CN105052240A - Shortened call setup for multimode wireless access terminals - Google Patents
Shortened call setup for multimode wireless access terminals Download PDFInfo
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- CN105052240A CN105052240A CN201380074683.9A CN201380074683A CN105052240A CN 105052240 A CN105052240 A CN 105052240A CN 201380074683 A CN201380074683 A CN 201380074683A CN 105052240 A CN105052240 A CN 105052240A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
- H04W76/15—Setup of multiple wireless link connections
- H04W76/16—Involving different core network technologies, e.g. a packet-switched [PS] bearer in combination with a circuit-switched [CS] bearer
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/02—Terminal devices
- H04W88/06—Terminal devices adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals
Abstract
A portable radio communication apparatus supporting multiple radio access technologies and configured to camp on a first communication access network includes a controller, and a multi-mode radio access technology device coupled to the controller. The controller is configured to detect that the first communication access network on which the multi-mode radio access technology device is currently camped does not support operator-provided voice call service functionality for the multi-mode radio access technology device. The controller is configured to establish a communication link between the multi-mode radio access technology device and a second communication access network capable of supporting operator-provided voice call service functionality for the multi-mode radio access technology device if packet-switched services supported by the first communication access network on which the multi-mode radio access technology device is currently camped are not being used by the multi-mode radio device and are provided to the multi-mode device by a wireless access network.
Description
Technical field
Each aspect of the present invention relates generally to wireless communication system, the call set-up time during the multi-mode wireless particularly related on a kind of network residing in the speech business not providing operator to provide of shortening accesses terminal.
Background technology
Wireless communication system provides various types of communication connection and ability, such as, and voice-and-data.The communication system of these types can be accessed by multiple user and supports to comprise the communication of the free system resources such as bandwidth sum transmitting power and share.Multiple access communication system, also be called cellular system and network, its example can include but not limited to, code division multiple access (CDMA) system, time division multiple access (TDMA) system, frequency division multiple access (FDMA) system, 3GPP Long Term Evolution (LTE) system and OFDM (OFDMA) system.
Some communication systems and equipment are included in multiple radio access technologies of transmission and reception on heterogeneous networks.The example of different radio frequency access technology can include but not limited to, Universal Mobile Telecommunications System (UMTS), global system for mobile communications (GSM), CDMA2000, WiMax, Wifi and LTE.
Long Term Evolution is a kind of wireless data communication technology standard.The development of LTE standard is derived from GSM/UMTS standard.LTE standard generally adds capacity and the speed of radio data network.It comprises simplified network architecture, becomes IP-based system.Because LTE standard only supports packet switching, so it is not supported, the legacy circuit-switched audio call such as provided by GSM, UMTS and CDMA2000 standard network.But the LTE network of following several generations probably supports when introducing the technology such as LTE network speech business (VoLTE) speech business that operator provides.
Due to various types of cordless communication network, mobile communication equipment or multi-mode wireless access terminal, also be called in this article " subscriber equipment ", need to support and the radio communication in the radio communication of more than one cordless communication network and more than one cordless communication network.Although, for describing object herein, multi-mode wireless accesses terminal and will be called as " mobile communication equipment " or " terminal ", but should understand, multi-mode wireless accesses terminal and can comprise the Wireless Telecom Equipment of any appropriate, its example includes but not limited to, multi-mode wireless transmission/reception unit, cellular communication apparatus, smart mobile phone, panel computer or dull and stereotyped mobile phone.
The mobile communication equipment comprising LTE radio access technology can be called as forth generation (4G) mobile communication equipment.4G mobile communication equipment can comprise different radio frequency or radio-frequency apparatus to provide multiple different voice communications versus data communications ability and function to user.Such as, 4G mobile communication equipment may comprise for the LTE radio of Packet data service, IEEE802.11 (Wifi) standard radio frequency, global positioning system (GPS) radio frequency and bluetooth standard radio frequency.The different phonetic communication that any one or more radio frequencies in this kind of 4G equipment can operate to provide equipment of planting thus to provide simultaneously and data communication service.
When terminal use in heterogeneous networks, in and between roam time, preferably in a seamless manner terminal is switched to next network from a network.The business being supplied to terminal should be preferably continuous print, and switching preferably should occur in business incessantly.Such as, terminal or wireless user can at the internetwork roamings of WLAN and 3G network.Coordination between terminal and Radio Service networks provides business continuance during usually should carrying out roaming or moving between different networks.
Many LTE network also not support voice call business itself, and similarly, this type of voice call service is not also moved communication equipment support usually.Therefore, the speech business that operator provides must by legacy network process.On an LTE network resident and a kind of scheme being about to the situation setting up audio call is circuit domain exchanges and fall (CSFB) after rise for mobile communication equipment.Exchanged by circuit domain and fall after rise, operate under LTE (data cube computation) pattern when supporting the mobile communication equipment of LTE, UMTS and GSM network and audio call accesses time, this equipment of LTE network paging.Mobile communication equipment utilizes particular service request to respond LTE network, and LTE network notice mobile communication equipment moves or fall back to 2G/3G network to accept into exhaling.About going out to exhale, carry out similar procedure.Therefore, in CSFB, mobile communication equipment moves to GSM, UMTS or CDMA2000 network from LTE network, no matter when will perform call setup business.This start from the Mobile solution of LTE network in mobile device and mobile device terminating call set up
But in these CSFB type scheme, call set-up time is obviously longer than traditional calling settling time.In addition, the call setup success rate in CSFB type scheme is often lower than the call setup success rate in traditional calling process of establishing.Be called that " circuit domain exchanges and falls after rise according to the name of QualCom company in 2012.The first stage (Circuit-switchedfallback.Thefirstphaseofvoiceevolutionfo rmobileLTEdevice) of the voice evolution of mobile LTE equipment " research; the call set-up time in CSFB scheme as above reaches 100% than traditional calling process of establishing, is increased to about 5.2 seconds from about 2.6 seconds.This temporal increase is normally worthless.
The multimode terminal resided on LTE community will receive high performance packet switching service (PS) from LTE network.Work as call setup, and equipment moving arrives, such as, during GSM or UMTS, packet switching service hydraulic performance decline.Therefore, when the not request circuit territory reciprocal exchange of business, terminal is preferably positioned in LTE network usually.
SVLET (simultaneous voice and LTE) solves to provide speech business to another replacement scheme of the problem of resident equipment on an LTE network.Although compared with CSFB class execution mode, having the mobile terminal of SVLTE ability without any need for extra audio call settling time, there is extra hardware cost and consumes more power in these equipment.
Therefore, need a kind of system, equipment and call establishment, making to reside in Virtual network operator cannot provide the call set-up time of the mobile communication equipment on the network of voice call service to minimize.
Summary of the invention
As described herein, exemplary embodiment overcomes one or more above-mentioned or other shortcoming well known in the prior art.
An aspect of of the present present invention relates to a kind of portable radio-frequency communicator, and it is supported multiple radio access technologies and resides in the first communication access net.In one embodiment, described portable radio-frequency communicator comprises controller and is coupled to the multi-mode radio frequency access technology equipment of described controller.Described controller does not support for detecting resident described first communication access net of described multi-mode radio frequency access technology equipment the voice call service function that operator provides for described multi-mode radio frequency access technology equipment.Before initiation audio call is set up, if the packet switching service of described first communication access net support is not by described multi-mode radio frequency equipment use and be supplied to described multi-mode radio frequency equipment by the 3rd Access Network, then between described multi-mode radio frequency access technology equipment and the second communication Access Network that the voice call service function that operator provides for described multi-mode radio frequency access technology equipment can be supported, set up a communication link.
Another aspect of the present invention relates to a kind of wireless communication system.In one embodiment, described system comprises the first Access Network supporting packet switching service, the second Access Network supporting the voice call service that provides of operator, the WLAN access point providing packet switching service, mobile communication equipment and controller.Described mobile communication equipment resides in not to be supported on described first Access Network of the voice call service that operator provides for described mobile communication equipment.Described controller is for determining that described first Access Network does not support the voice call service that operator provides for described mobile communication equipment; Detect described mobile communication equipment and receive packet switching service from described WLAN access point; And when described mobile communication equipment does not receive packet switching service from described first Access Network, automatically set up one with the communication link of described second access network.
The another aspect of disclosed embodiment relates to method that the is a kind of and radio communication of mobile communication equipment.In one embodiment, described method comprises from the first communication access net reception packet switching service described mobile communication equipment; Detect described first communication access net and do not support the voice call service that operator provides for described mobile communication equipment; Detect second communication access network and can support the voice call service that operator provides for described mobile communication equipment; Detect described mobile communication equipment and receive packet switching service from WLAN (wireless local area network); And automatically set up one with the communication link of described second communication Access Network.
By reference to the accompanying drawings, according to detailed description hereafter, these and other aspect of exemplary embodiment and advantage will become apparent.It is to be understood, however, that the design of accompanying drawing is only the object of explanation but not limits the present invention as limiting, for this reason, should with reference to claims.Other aspects and advantages of the present invention will be described hereinafter middle elaboration, and part will be apparent from description, or are learnt by practice of the present invention.In addition, each aspect of the present invention and advantage can be realized and acquisition with combination by the instrument especially pointed out in appended claims.
Accompanying drawing explanation
In the accompanying drawings:
Fig. 1 is the schematic diagram of an embodiment of the example system comprising each side of the present invention;
Fig. 2 is the mapping of an embodiment of the overlay area, exemplary cell comprised in the system of each side of the present invention;
Fig. 3 is the exemplary timing chart utilizing CSFB to set up mobile originating audio call in the lte networks;
Fig. 4 is the exemplary timing chart setting up mobile originating audio call in an embodiment of the system comprising each side of the present invention;
Fig. 5 is the flow chart of an embodiment of the example process comprising each side of the present invention;
Fig. 6 is the block diagram of an embodiment of the multi-mode radio frequency access technology equipment comprising each side of the present invention.
Embodiment
Fig. 1 shows an embodiment of wireless communications environment or the system comprising each side of the present invention.In this example, wireless communications environment or system 100 comprise for carrying out with one or more radio communication Access Network or system the wireless device 110 that communicates.Wireless device 110 can comprise wireless or mobile communication equipment arbitrarily, described in as herein.The example of this kind equipment includes but not limited to, mobile terminal, access terminal, cellular device, personal digital assistant, radio modem, handheld device, kneetop computer, panel computer, flat board, dull and stereotyped mobile phone and smart mobile phone.In one embodiment, wireless or mobile communication equipment 110 is for carrying out two-way communication with 2G/3G cellular system 102, LTE network 104 and WLAN access point 106 and other suitable system and equipment.As understanding, and will not further describe herein, mobile communication equipment 110 will comprise the radio-frequency apparatus of the suitable quantity being coupled to antenna, utilizes general described cordless communication network herein to support suitable radio access technologies and radio communication function to make mobile communication equipment 110.
In one embodiment, the example wireless communication access net shown in Fig. 1 includes but not limited to, 2G/3G cellular network 102, LTE network 104, be also called community, and WLAN access point 106.The example of 2G/3G cellular network 102 can include but not limited to, supports to comprise GSM, WCDMA and CDMA2000 by the network of voice call service that operator provides, or other this type of suitable network.In one embodiment, 2G/3G network 102 and LTE network 104, be also called the first and second networks, can be operated by same operator or cooperation operator, and WLAN access point 106, or the 3rd network, be totally independent of 2G/3G network 102 and LTE network 104.In this example, the 3rd network provides OTT data service, but does not provide the business that operator controls, such as voice.Although Fig. 1 illustrate only a network 102,104 and WLAN access point 106, each side understanding the disclosed embodiments be there is no this kind of restriction, and system 100 can comprise more than one network 102,104 and WLAN access point 106.Mobile communication equipment 110 will comprise one or more radio frequency, and that understands as in prior art is such, and its permission mobile communication equipment 110 is independent with 106 with one or more network 102,104 or communicated by compound mode.Such as, in one embodiment, mobile communication equipment 110 is for substantially communicating with WLAN access point 106 with one or more cordless communication network 102,104 simultaneously.Each aspect of the present invention relates to terminal such as mobile communication equipment 110 multimodality such as grade and is connected to the WLAN (wireless local area network) such as WLAN access point 106, resides in a kind of situation on the networks such as the LTE network 104 cannot obtaining or provide (operator provides) voice call service simultaneously.In this case, mobile communication equipment 110 does not use the packet switching service of LTE network 104, because these business are provided by WLAN access point 106.In some legacy systems, mobile communication equipment 110, in order to voice responsive setup requests, all if the Access Network of 2G/3G cellular network 102 providing speech business and so on by being transferred to.As mentioned above, this causes the obvious delay in call establishment, but also call setup success rate can be caused lower.Each aspect of the present invention relates to initiatively transfers to mobile communication equipment 110 Access Network providing voice call service, such as 2G/3G cellular network 102, and this advantageously shortens these and postpones and some reasons avoiding call setup failure.
Fig. 2 is the schematic diagram of the mobile communication equipment 110 of migration in the system 200 comprising heterogeneous networks covering or cell area.Network's coverage area or area comprise WCDM/HSPA network's coverage area 202, LTE network overlay area 204 and WLAN coverage territory 206.The implementation of these overlay areas 202,204 and 206 and equipment will be understood in the prior art and not further describe in this article.The shape of overlay area 202,204 and 206 and region not limited by the given shape of the overlay area shown in Fig. 2, direction and configuration.On the contrary, given shape and the covering in region 202,204,206 are only exemplary, and in an alternative embodiment, can comprise any specific shape and size, and comprise geographic area or the area of any appropriate size.
In this example, there is the community that three provide WCDMA/HSPA202, LTE204 and WLAN206 overlay area.These communities can comprise, such as, and the 2G/3G system 102 shown in Fig. 1, LTE system 104 and WLAN access point 106.In an alternative embodiment, the community of any amount can provide the exemplary covering shown in Fig. 2.In order to implement the example of disclosed embodiment, the LTE network 104 of LTE overlay area 204 is provided not support the voice call service that operator provides.
The movement of the mobile communication equipment 110 in Fig. 2 is carried out along the path of lines 210.The instruction which network mobile communication equipment 110 resides on is indicated by the change of the mode of the line segment to form lines 210.Such as, phantom line segments 212 indicates mobile communication equipment to reside in LTE network 104.Real segment 214 indicates mobile communication equipment 110 to reside on 2G/3G network 102, and it shows for WCDMA/HSPA network in this example, receives packet switching service from WLAN access point 106 simultaneously.In one embodiment, this can also be described as mobile communication equipment 110 and resides on 2G/3G network 102 and WLAN access point 106.With reference to the other parts of lines 210, phantom line segments 216 indicates mobile communication equipment 110 to reside in LTE network 104, and real segment 218 indicates mobile communication equipment 110 to reside on 2G/3G network 102.
With reference to the movement of mobile communication equipment 110 along the path indicated by lines 210, in one embodiment, the mobile communication equipment 110 of the point that symbol A indicates is positioned in WCDMA/HSPA overlay area 202 and LTE overlay area 204.In this example, mobile communication equipment 110 resides in starting on LTE community or network 104, as long as and the WLAN access point 106 represented by overlay area 206 not in scope, this will become honeycomb access.
When mobile communication equipment 110 is positioned at the point along the path 210 indicated by symbol B, mobile communication equipment 110 moves in WLAN coverage territory 206.Now, the WLAN business provided by WLAN access point 106 brought into use by mobile communication equipment 110, and the mode generally understood with prior art carries out grouped data connection.Although mobile communication equipment 110 uses WLAN access point 106 to carry out grouped data connection, mobile communication equipment 110 still resides in LTE network 104, indicated by dotted line 212.
On the point along the lines 210 indicated by symbol C, mobile communication equipment 110 is mobile in the WCDMA/HSPA overlay area 202 of 2G/3G community or network 102.According to an aspect of disclosed embodiment, mobile communication equipment 110 reselects to 2G/3G network 102 from LTE network 104 automatically.Mobile communication equipment 110 continues to receive packet switching service from WLAN access point 106, resides on 2G/3G network 102 simultaneously.Because mobile communication equipment 110 resides on 2G/3G network 102, so mobile communication equipment 110 directly can set up audio call on 2G/3G network 102 or by 2G/3G network 102.In traditional type communication system, as long as community restriction and switchover policy and process support LTE community or network 104, mobile communication equipment 110 will still reside in LTE network 104.
When mobile communication equipment 110 arrives the point along the path 210 indicated by symbol D, no longer Packet Service can be received from WLAN access point 106 outside the scope that mobile communication equipment 110 moves to WLAN coverage territory 206.When mobile communication equipment 110 moves to outside WLAN coverage territory 206, usually at symbolic point D place, mobile communication equipment 110 will bring into use existing cellular access network to carry out packet switching service, and for the object of this example, it is 2G/3G network 102 or WCDMA/HSPA network.In an alternative embodiment, current cellular networks can be the cellular communications networks of any appropriate supporting the voice call service that operator provides.But, when application normal cell reselection when no longer receiving Packet Service from WLAN access point 106, is selected standard by mobile communication equipment 110 on 2G/3G network 102.In one embodiment, select if radio frequency conditions is this community of triggering or network selection/reselection, mobile communication equipment 110 can return and reside in LTE network 104.
Therefore, as shown in the lines with reference to path 210, the imaginary component 212,216 in path 210 represents that mobile communication equipment 110 resides in LTE network 104.Mobile communication equipments 110 reside on 2G/3G network 102 or other this kind suitable cellular telecommunication art network to divide 214,218 to represent with reference to the real part of lines in path 210.The each side of disclosed embodiment provides the network of mobile communication equipment 110 from residing in LTE network 104 and be switched to the speech business allowing operator to provide, and mobile communication equipment 110 receives packet switching service from the WLAN access point 106 between the point indicated by C and D along path 210 simultaneously.This behavior comprising the mobile communication equipment 110 in the system 100 of disclosed embodiment each side is different from conventional mobile communications equipment and system action, and advantageously makes the call set-up time accessed terminal resided on the network of the speech business not providing operator to provide minimize.
Fig. 3 shows in diagram LTE network and utilizes CSFB to set up the simplified signaling figure of audio call.In this example, mobile communication equipment 110 current resident 302 in LTE network 104, as shown in Fig. 1.As discussed previously, LTE network 104 does not support the voice call service that operator provides.Initiate 304 audio calls and set up request.In one embodiment, LTE network 104 can ask mobile communication equipment 110 to provide radio-frequency measurement 306 to other radio access technologies in the overlay area of mobile communication equipment 110.LTE network 104 is to 3G or 2G radio frequency network 102, and the WCDMA/HSPA network of such as Fig. 2 sends 308 and controls (RRC) Connection Release signal with the radio frequency resource of redirect message.Mobile communication equipment 110, according to specified by the RRC Connection Release signaling of redirect message, resident 310 on 3G or 2G network.Then mobile communication equipment 110 sets up 312 audio calls.
With reference to figure 4, in the embodiment of system 100 comprising disclosed embodiment each side, the step 306 shown in Fig. 3 and 308 can be eliminated.Mobile communication equipment 110 resident 404 on 3G or 2G network, obtained 402 packet switching services from WLAN access point 106 before audio call sets up request simultaneously.Therefore, different from above-mentioned legacy system, according to each aspect of the present invention, do not need LTE network 104 to ask mobile communication equipment 110 provide the measurement of other radio access technologies or send the RRC Connection Release with being redirected to 3G or 2G network.This is because mobile communication equipment 110 is on the network supporting the speech business that operator provides.Audio call can set up 406, and and shortens audio call settling time.
Fig. 5 shows an embodiment of the handling process comprising each side of the present invention.In one embodiment, mobile communication equipment 110 detects 502 packet switching services is not provided by the current resident Access Network of mobile communication equipment 110.This can comprise detection packet switching service and receives from access point instead of receive from the current resident access network of mobile communication equipment 110.In one embodiment, determine whether the voice call service that 504 operators provide can be used on present Access.The voice call service that available operator provides must be compatible with the function of mobile communication equipment 110.Such as, if present Access supports by VoLTE the voice call service that operator provides, but mobile communication equipment 110 does not support VoLTE, and so mobile communication equipment 110 can not use the voice call service that these operators provide.
If determine that the voice call service that 504 operators provide is available, mobile communication equipment still 512 resides on present Access.But, if determine that 504 these type of voice call service are unavailable, then determine whether 506 exist any appropriate community belonging to the Access Network supporting the speech business that operator provides.This can comprise determines whether to exist in 506 scopes any other and provides the Access Network of this type of speech business.In one embodiment, this can comprise and determines that Access Network is operating as the resident current registered network of mobile communication equipment 110 by same operator.Such as, the selection of another Access Network can based on having identical PLMNID, or be defined as equivalent PLMN, network for current residing network.
If determine that 506 do not exist arbitrarily that other supports the suitable cell of the voice call service that operator provides, then mobile communication equipment 110 still 512 resides on the Access Network of current registration.But, if determine the community that there is the voice call service that at least one suitable support operator provides, then make and determine or assess 508 about whether meeting table tennis standard, to avoid the frequent reselection procedure between Access Network.
If determine that 508 do not meet table tennis standard, then mobile communication equipment 110 still 512 resides on the Access Network of current registration.But if determine that 508 meet or meet table tennis standard, then its cell reselection standard of adjustment 510 is supported on the Access Network of the voice call service that operator provides to reside in by mobile communication equipment 110.In one embodiment, any one in multiple suitable cell reselection standard can be used, make at mobile communication equipment 110, such as, when moving along the path 210 of Fig. 2, the foundation of managing communication sessions and safeguarding and the continuous communiction of mobile communication equipment 110.These standards can comprise or implement at application layer, Non-Access Stratum or radio frequency resource key-course.
In application layer, the higher layer applications software in mobile communication equipment 110 knows which network mobile communication equipment 110 is connected to and from which business of different Network Capture.The each side of disclosed embodiment can be passed through when adopting following condition (temporarily) and not support that all Access Networks not providing voice call service realize.
In one embodiment, mobile communication equipment 110 is static or moves with speed slowly.This can comprise when mobile communication equipment 110 is in indoor, such as, be in, in a building or when using in office.The translational speed of mobile communication equipment 110 can be estimated by GPS or other existing method.If mobile communication equipment 110 at a relatively high speed or the speed being greater than predetermined threshold move, method then based on speed can be used for determining: when mobile communication equipment 110 obtains packet switching service from WLAN access point 106, and whether it is applicable to starting to reside on 2G/3G network 102 instead of in LTE network 104.
In one embodiment, time-based method can be used for determining: once mobile communication equipment 110 receives packet switching service from WLAN access point 106, and whether mobile communication equipment 110 should move to 2G/3G network 102 from LTE network 104.Such as, once mobile communication equipment 110 obtains packet switching service from WLAN access point 106, mobile communication equipment 110 must to start to reside on 2G/3G network 102 instead of in LTE network 104 before, wait for predetermined amount of time, such as about 10 seconds.After predetermined amount of time in the past, mobile communication equipment 110 estimates that WLAN signal is from identical access point or diverse access point and whether enough strong.Mobile communication equipment 110 resides in 2G/3G network 102 instead of LTE network 104 subsequently.In this way, when mobile communication equipment 110 can avoid the ping-pong between LTE network 104 and 2G/3G network 102 when mobile.Although predetermined amount of time is indicated as about 10 seconds, in an alternative embodiment, any suitable time period can be used.
In one embodiment, mobile communication equipment 110 resides in and can only realize on the Access Network of packet switching, the LTE network 104 of such as Fig. 1, but simultaneously also from the packet switching service such as access such as local access point such as WLAN access point 106 grade of Fig. 1.Mobile communication equipment 110 cannot obtain from LTE network 104 voice call service that operator provides.
In one embodiment, mobile communication equipment 110 support can support other access network technology of the voice call service that operator provides, and mobile communication equipment 110 is positioned at the coverage of at least one other this kind of Access Network.Mobile communication equipment 110 is allowed to be registered to other Access Network of this kind, such as, 2G/3G network 102 shown in Fig. 1.
Mobile communication equipment 110, LTE network 104 and 2G/3G network 102 are supported in function when asking voice call service (such as, being provided by CSFB function), mobile communication equipment 110 being transferred to 2G/3G network 102 from LTE network 104.
If these situations are suitable for, then mobile communication equipment 110 will start on the resident network to supporting the voice call service that operator provides subsequently.The each side of disclosed embodiment relates to: occur audio call set up request before, allow mobile communication equipment 110 reside in belong to another network such as 2G/3G network 102 grade community on.
The each side of disclosed embodiment can also implement the modulator-demodulator mobility management layer place at mobile communication equipment 110.In one embodiment, Non-Access Stratum software in modulator-demodulator is passable, if know that mobile communication equipment 110 receives packet switching service from WLAN access point, (temporarily) does not support all Access Networks not supporting the voice call service that operator provides.Before forbidding this support, mobility management layer can verify other network, the network of the voice call service that such as any support operator provides, and exists and covers.
When each side of disclosed embodiment is implemented at modulator-demodulator radio frequency resource key-course, Access Layer software in modulator-demodulator is passable, if know that mobile communication equipment 110 is from WALN access point, the WLAN access point 106 of such as Fig. 1, obtain packet switching service, at least temporary effects cell reselection standard, make to belong to can the cell preference of network of support voice calling in the community of the voice call service not supporting operator to provide.Like this, mobile communication terminal 110 will recognize all available Access Network communities completely, and once lose or the access of forbidding to WLAN access point 106, within the minimum delay, likely returns the lower network of temporary preference level.
With reference to figure 6, in one embodiment, processor or controller 602 can be coupled to mobile communication equipment 110 to perform general described various function and process herein.Although illustrate only single processor in the example of Fig. 6, will understand, processor 602 can comprise the processor of any amount, controller and memory devices.In one embodiment, processor 602 controls the operation of mobile communication equipment 110.Although processor 602 is described to be coupled to mobile communication equipment 110, in one embodiment, processor 602 to be integrated in mobile communication equipment 110 or it is a part of.In one embodiment, processor 602 comprises or is coupled to memory devices 604, it comprises the computer-readable medium storing computer executable instructions, when on treatment facility 602 or when being performed by treatment facility 602, described computer executable instructions is for performing and implementing general described function and process herein.In one embodiment, processor 602 can the program code of storing mobile communication equipment 110 and data.Memory devices 604 can also be a part for the database 606 of the information stored about mobile communication equipment 110 and various network 102,104 and 106 or be coupled to this database 606, wherein mobile communication equipment 110 and these network services.Processor 602 can in one or more integrated circuit (IC) or the upper enforcement of application-specific integrated circuit (ASIC) (ASIC).In one embodiment, processor 602 comprises computer-readable medium, has non-momentary program code stored thereon, performs process as herein described and method when described program code performs in processor 602.
The each side of disclosed embodiment starts to reside on the community of the Access Network belonging to the speech business that support operator provides before the audio call request of setting up exists by making mobile communication equipment.This minimizes making the call set-up time of the mobile communication equipment 110 resided on network, described network does not support the voice call service that compatibility or the operator being suitable for mobile communication equipment 110 provide, relevant with CSFB or CSFB class function especially when a call is established.Directly can set up by initiatively being transferred to by mobile communication equipment 110 Access Network that voice call service is still connected to WLAN access point simultaneously, call set-up time obviously shortens.Therefore, in one embodiment, when equipment receives packet switching service from WLAN access point, mobile communication equipment 110 will automatically switch to and reside on community, and described community belongs to the Access Network can supporting the voice call service that operator provides.This is avoided the loss of time brought by circuit domain exchange falling process, this shows for nearly 2.5 seconds in some cases, indicates in the report that the name as the QualCom company 2012 is called " circuit domain exchanges the first stage (Circuit-switchedfallback.Thefirstphaseofvoiceevolutionfo rmobileLTEdevice) of the voice evolution of falling-mobile LTE equipment ".The each side of disclosed embodiment substantially eliminates the total loss about CSFB, and the mobile terminal calling of mobile communication equipment residing in LTE network and transfer to UMTS/UTRAN community can to improve 48% settling time nearly.Set up for mobile originating, the corresponding time promotes for UMTS/UTRAN transfer nearly 38%, and for GSM/GERAN transfer nearly 40%.
Therefore, although illustrate, describe and point out the of the present invention basic novel feature being applied to exemplary embodiment of the present invention in literary composition, but should understand, the technical staff in described field can without departing from the spirit and scope of the present invention, carries out various omission, replacement and change to the form of apparatus and method and details and device operation.In addition, clearly wish, perform substantially identical function with all combinations of that part element and/or method step of realizing identical result all within the scope of the invention in the identical mode of cardinal principle.In addition, it should be understood that the structure that of the present invention any form that combination discloses or embodiment carry out showing and/or describing and/or element and/or method step can be used as design alternative generic items and be incorporated in any other form of disclosing or describe or advising or embodiment.Therefore, the carrying out that the present invention only indicates according to the scope of claim of enclosing limits.
Claims (15)
1. support multiple radio access technologies and for residing in the portable radio-frequency communicator on the first communication access net, it is characterized in that, comprise:
Processor; And
Be coupled to the multi-mode radio frequency access technology equipment of described controller, wherein said controller is used for:
Detect current resident described first wireless access network of described multi-mode radio frequency access technology equipment and do not support the voice call service function that operator provides for described multi-mode radio frequency equipment; And
Before initiation audio call is set up, when detecting that described multi-mode radio frequency equipment receives packet switching service from wireless access network, between described multi-mode radio frequency equipment and the second communication Access Network supporting the voice call service function that operator provides for described multi-mode radio frequency access technology equipment, set up a communication link.
2. portable radio-frequency communication equipment according to claim 1, is characterized in that, described first communication access network is a kind of LTE network.
3. portable radio-frequency communication equipment according to claim 2, is characterized in that, described second communication Access Network is one in GSM, CDMA2000 or WCDMA/HSPA network.
4. portable radio-frequency communication equipment according to claim 1, is characterized in that, described wireless access network is a kind of WLAN access point.
5. portable radio-frequency communication equipment according to claim 1, is characterized in that, described first communication access network is the network that can only realize packet switching.
6. portable radio-frequency communication equipment according to claim 1, it is characterized in that, described controller moves to be greater than predetermined speed for detecting described multi-mode radio frequency equipment, and for postponing the switching from described first communication access net to described second communication Access Network.
7. portable radio-frequency communication equipment according to claim 1, it is characterized in that, described controller is used for: when described multi-mode radio frequency equipment receives packet switching service from described wireless network, by the switching delay scheduled time of described first communication access net to described second communication Access Network.
8. a wireless communication system, is characterized in that, comprising:
Support the first Access Network of packet switching service;
Support the second Access Network of the voice call service that operator provides;
The WLAN Access Network of packet switching service is provided;
Reside in the mobile communication equipment on described first Access Network; And
Processor, for:
Determine that described first Access Network does not support the voice call service that operator provides for described mobile communication equipment;
Detect described mobile communication equipment and receive packet switching service from described WLAN access point; And
When described mobile communication equipment does not receive packet switching service from described first Access Network, automatically set up the communication link with described second Access Network.
9. Wireless Telecom Equipment according to claim 8, is characterized in that, described first Access Network is a kind of LTE network not supporting the voice call service that operator provides for described mobile communication equipment.
10. Wireless Telecom Equipment according to claim 8, is characterized in that, described second Access Network is one in GSM, CDMA2000 or WCDMA/HSPA network.
11. Wireless Telecom Equipments according to claim 8, it is characterized in that, described controller is used for: realizing described mobile communication equipment from described first Access Network to before the switching of described second Access Network, determine that described mobile communication equipment moves in the coverage of described first and second networks to be less than predetermined speed.
12. Wireless Telecom Equipments according to claim 8, it is characterized in that, described controller is used for: at described mobile communication equipment from after described WLAN access point receives packet switching service, by described mobile communication equipment from described first network to the switching delay predetermined amount of time of described second network.
13. 1 kinds with the method for the radio communication of mobile communication equipment, it is characterized in that, comprising:
Reside on the first communication access net to receive packet switching service;
Detect described first communication access net and do not support the voice call service that operator provides for described mobile communication equipment;
Detect described second communication Access Network and can support the voice call service that operator provides for described mobile communication equipment;
Detect described mobile communication equipment and receive packet switching service from WLAN (wireless local area network); And
The communication link of automatic foundation and described second communication Access Network.
14. methods according to claim 13, is characterized in that, comprising: before setting up the described communication link with described second communication network, determine that the described packet switching service of described first communication access net is not used by described mobile communication equipment.
15. methods according to claim 13, is characterized in that, described first communication network is a kind of LTE network, and described second communication network is a kind of 2G/3G network, and described WLAN (wireless local area network) is a kind of WLAN access point.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/EP2013/063095 WO2014206436A1 (en) | 2013-06-24 | 2013-06-24 | Shortened call setup for multimode wireless access terminals |
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| Publication Number | Publication Date |
|---|---|
| CN105052240A true CN105052240A (en) | 2015-11-11 |
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| CN201380074683.9A Pending CN105052240A (en) | 2013-06-24 | 2013-06-24 | Shortened call setup for multimode wireless access terminals |
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| CN (1) | CN105052240A (en) |
| WO (1) | WO2014206436A1 (en) |
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| WO2014206436A1 (en) | 2014-12-31 |
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