CN101273538A - Sleep mode for wireless communication device during out of service operation - Google Patents
Sleep mode for wireless communication device during out of service operation Download PDFInfo
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- CN101273538A CN101273538A CNA2006800351444A CN200680035144A CN101273538A CN 101273538 A CN101273538 A CN 101273538A CN A2006800351444 A CNA2006800351444 A CN A2006800351444A CN 200680035144 A CN200680035144 A CN 200680035144A CN 101273538 A CN101273538 A CN 101273538A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
The disclosure is directed to techniques for performing service signal searches with reduced power consumption when a wireless communication device is operating out of service. The techniques include placing the wireless communication device in a 'deep sleep' mode when the wireless communication device is not in service. When operating in the deep sleep mode, the wireless communication device reduces power consumption by not looking for paging signals or searching for service signals. The wireless communication device then may periodically enter a wake-up period during which power consumption is increased to perform signal searches in one or more frequency bands. The wireless communication device returns to the deep sleep mode when the signal searches are unsuccessful.
Description
Related application
The application's case advocate the title of application on August 8th, 2005 be " TECHNIQUES FOR WCDMA SIGNALSEARCH WHILE HANDSET IS OPERATING OUT OF SERVICE " the 60/706th, No. 725 U.S. Provisional Application cases, this application case case transfer this assignee and are incorporated herein with the form of quoting.
Technical field
The present invention relates generally to radio communication, and relates to the operation of the disengaging service in the radio communication device or rather.
Background technology
Develop some different wireless communication technologys, wherein comprised frequency division multiple access (FDMA), time division multiple access (TDMA) and various spread spectrum.A kind of common spread spectrum that is used for radio communication is the modulation of code division multiple access (CDMA) signal, wherein a plurality of communications of transmission on spread spectrum radio frequency (RF) signal simultaneously.Some mobile communication protocols use the modulation of CDMA signal, for example CDMA standard series and wideband CDMA (W-CDMA) standard series.
Saving power in radio communication device (WCD) is a very important problem, because WCD is powered by limited battery resource usually.In order to save power, WCD can be periodically with the low-power mode operation, and it is commonly referred to " standby " pattern.When radio communication device during with operate in standby mode, it reduces power consumption by the power that cuts off selected intraware.Developed the slot type paging technique, wherein in the paging groove of assigning paging signal has been sent to WCD from the base station, described paging groove is separated at interval by preset time.The slot type paging allow WCD during period between the paging groove continuously with operate in standby mode, and can not miss paging signal.
Yet when the WCD device was operated when breaking away from service, radio communication device can't receive any service signal from the base station.When initial energising or when during normal running, losing service, may break away from the situation of service.In either case, WCD all can't be with operate in standby mode because itself and do not know to seek paging signal when with in which frequency band.But WCD is search service signal in frequency and code space constantly.Constantly search condition has increased power consumption in fact and has exhausted battery resource among the WCD fast.
Summary of the invention
The present invention is substantially at the technology of carrying out the service signal search under the situation that breaks away from service at WCD during operation with the power consumption that reduces.Described technology is particularly useful for CDMA or W-CDMA system.Described technology is included in WCD not in service and unidentified " deep-sleep " pattern that WCD placed when going out service signal.When WCD operated with deep power down mode, it reduced power consumption by not search service signal.Yet radio communication device periodically enters wake-up period, during described wake-up period, increases power consumption to carry out the service signal search in one or more frequency bands of supporting at WCD.When signal search was unsuccessful, WCD turned back to deep power down mode, and left deep power down mode when the signal search success.
During wake-up period, WCD uses through design to come the intelligent search technique of positioning service signal effectively with the power consumption that reduces.Described search technique allows WCD fast quick-recovery service when saving battery life.For instance, when entering wake-up period, WCD can at first carry out acquisition database scanning with the search service signal.Described acquisition database can comprise pre-loaded channel and the channel of dynamically knowing, for example WCD had before received the channel of service in the above.When the search service signal, can be better than the priority of other frequency band to staying the frequency band there is the channel of dynamically knowing, thereby in some example positioning service signal more promptly.
In addition, WCD can carry out full rate scanning off and on the search service signal.Full rate scanning can relate to the thorough search to whole service band, and compares with acquisition database scanning and may consume relative plenty of time and power resource.The number of times of restriction execution full rate scanning can reduce the power consumption among the WCD by the time quantum that minimizing WCD wakes up.In addition, WCD can use the time of implementation of timer with further control full rate scanning.The number of full rate scanning and regularly can being limited by through design to reduce power consumption and and then to prolong one group of rule of WCD operation.
In one embodiment, the invention provides a kind of method that may further comprise the steps: when radio communication device is operated, place deep power down mode to reduce the power consumption of radio communication device radio communication device when breaking away from service; Periodically increase the power in the radio communication device, with initial one or more wake-up periods; In one or more frequency bands that radio communication device is supported, carrying out the service signal search during the wake-up period; And when the service signal search is unsuccessful, make radio communication device turn back to deep power down mode.
In another embodiment, the invention provides the computer-readable media that comprises instruction, described instruction causes processor: breaking away from radio communication device when operating under the situation of serving, placing deep power down mode to reduce the power consumption of radio communication device radio communication device; Periodically increase the power in the radio communication device, with initial one or more wake-up periods; In one or more frequency bands that radio communication device is supported, carrying out the service signal search during the wake-up period; And when the service signal search is unsuccessful, make radio communication device turn back to deep power down mode.
In another embodiment, the invention provides a kind of radio communication device that comprises controller, described controller is breaking away from radio communication device when operating under the situation of serving, and places deep power down mode to reduce the power consumption of radio communication device radio communication device; Periodically increase the power in the radio communication device, with initial one or more wake-up periods; In one or more frequency bands that radio communication device is supported, carrying out the service signal search during the wake-up period; And when the service signal search is unsuccessful, make radio communication device turn back to deep power down mode.
Available hardware, software, firmware or its combination in any are implemented technology described herein.If implement with hardware, then described technology can partly realize by the computer-readable media that comprises the program code that contains instruction, and one or more in the method described herein are carried out in described instruction when being performed.
In the following drawings and description, set forth the details of one or more embodiment.By describing and graphic and pass through claims, will understand further feature and advantage easily.
Description of drawings
Fig. 1 is the block diagram of explanation example wireless communication system.
Fig. 2 is the block diagram of explanation exemplary wireless communication device, and described device comprises controller, and described controller can place deep power down mode with radio communication device when radio communication device is operated under the situation of disengaging service.
Fig. 3 is the flow chart that explanation breaks away from the example operation of radio communication device when the request service of service.
Fig. 4 A and 4B are the flow charts of the example operation of the explanation radio communication device that is in the disengaging service in the deep power down mode.
Embodiment
Fig. 1 is the block diagram of explanation example wireless communication system 10.As shown in Figure 1, system 10 can comprise one or more base stations 12A, 12B, 12C (being labeled as 12 jointly), its via one or more paths to radio communication device (WCD) 16 and from WCD 16 transmission and received signal 14A, 14B, 14C (being labeled as 14 jointly).As describing, when operating under the situation that is breaking away from service behind initial power-up or the loss of service, WCD 16 carries out the service signal search with the power consumption that reduces at WCD.Service signal can refer to paging channel or pilot frequency channel signal, or can be used for discerning and other any signal that is connected with certain base station 12.
When can't the positioning service signal, WCD 16 enters deep power down mode, so that save power between the service signal search.In deep power down mode, WCD 16 not search service signals.In this way, deep power down mode is in order to save power in WCD 16.Therefore, deep power down mode can refer to not any operator scheme of active searching service signal of WCD 16.Deep power down mode can further comprise following operator scheme: wherein the substantial portion of the circuit in the WCD 16 is that unactivated, outage or be placed in is ended or dormant state.In general, WCD 16 is not with the general horizontal consumed power that is associated with the service signal search operation.
Can use many rules and condition and control the behavior that is in the WCD 16 that breaks away from service scenarios.Described rule and situation can be defined in WCD 16 and enter the service signal number of searches of attempting before the deep-sleep, will with the scan type that obtains to serve from the deep-sleep periodic wakeup time (for example be carried out by WCD, the scanning of acquisition database or full rate), the time interval that will between continuous full rate scanning, observe, and the specific band that scans during each wake-up period.Wake-up period can refer to that WCD 16 activates enough electronic circuits to carry out the operator scheme of limited at least service signal search.During wake-up period, other can be activated to the unimportant circuit of service signal search or still be in park mode.
WCD 16 can adopt mobile radiotelephone, satellite radio telephone, incorporate wireless communication card in the pocket computer into, have the form of the PDA(Personal Digital Assistant) etc. of wireless communication ability.Each base station 12 (being sometimes referred to as base transceiver systems or BTS) comprises base station controller (not shown), and it provides Jie between base station 12 and the PSTN (PSTN) to connect.A plurality of public land mobile networks (PLMN) can be supported in base station 12.Communication service provider is at center operations and one or more PLMN of management, and use base station 12 is as hub.PLMN independently and each other interconnects, or is connected to fixed system, for example PSTN.System 10 can comprise the WCD and the base station of any number.
WCD once communicates by letter with one or more base stations 12.When WCD 16 is mobile in a zone, its can based on signal strength signal intensity or error rate by use a series of soft transfers and hard transfer finish with communicating by letter of a base station 12 also initial with the communicating by letter of another base station 12.When WCD 16 operated under the situation of disengaging service, WCD 16 can't receive service signals from system 10 interior any base stations 12.For instance, when WCD 16 beyond the service range of base station 12, perhaps run into temporary transient interruption to the time from the obstacle of the access of the service of base station 12 when it, WCD 16 may lose service.Perhaps, WCD 16 may seek service after initial power-up.
In order 12 to regain service from the base station, WCD 16 repeat search are in order to the service signal of operation.For instance, WCD 16 can send a series of service requests to a plurality of bands, obtains service to attempt from the base station one of 12.Repeating service signal search may significantly increase the power consumption among the WCD 16 and exhaust battery resource in the WCD 16.The technology that the present invention describes makes WCD 16 to carry out service signal search with the power consumption that reduces under the situation of disengaging service when WCD 16 operates.
As more detailed description hereinafter, when WCD 16 experience loss of service, it enters " deep-sleep " pattern.Enter deep power down mode when for instance, one or more initial service signal searchs that WCD 16 can be behind loss of service are unsuccessful.In other words, WCD 16 is search service signal behind loss of service originally, but then enters deep power down mode in the time can't obtaining to serve.When WCD 16 operated with deep power down mode, it ended the service signal search, and reduced power consumption by not search service signal.
Yet WCD 16 periodically enters wake-up period, increases power consumption during wake-up period, so that carry out signal search in one or more frequency bands that WCD16 supports.When the service signal search was unsuccessful, WCD 16 turned back to deep power down mode.Yet when service signal was searched for successfully, WCD 16 finished deep power down mode and turns back to normal service.
During wake-up period, WCD 16 uses through design to come the intelligent search technique of positioning service signal with the power consumption that reduces.For instance, when WCD 16 entered wake-up period, it at first carried out acquisition database scanning with the search service signal.Described acquisition database can comprise pre-loaded channel and the channel of dynamically knowing, for example WCD 16 before received the channel of service in the above.Described pre-loaded channel can comprise one group of channel of service provider's regulation.WCD 16 can add and upgrade the channel of dynamically knowing based on historical service activity.For instance,, then can add described channel to acquisition database, with as the channel of dynamically knowing if 16 past of WCD successfully obtain service on particular channel.
When the search service signal, can be better than the priority of other frequency band to the frequency band of staying the channel that has pre-loaded channel and dynamically know.In some cases, priority can be given WCD 16 obtains service recently from it channel.Exactly, higher-priority can be given the last band group that WCD 16 obtains service in the above.By using acquisition database, WCD 16 has dwindled the service signal search based on static channel information, and dynamically adds historical channel information.In this way, originally WCD 16 concentrates on search the band that most probable causes successfully reconnecting to service.The possibility of result is the higher search efficiency and the power consumption of minimizing.
If the image data library searching is unsuccessful, then WCD 16 can carry out full rate scanning off and on the search service signal.Full rate scanning may relate to the thorough search to whole service band.Regrettably, carry out full rate scanning and compare meeting relative a large amount of time of consumption and power resource with acquisition database scanning.The number of times of restriction execution full rate scanning can reduce the power consumption among the WCD 16 by the time quantum that the minimizing radio communication device wakes up.In certain embodiments, WCD 16 can use the time of implementation of timer with further control full rate scanning.Therefore, the number of full rate scanning and regularly can being limited by through design to reduce power consumption and and then to prolong the one group of rule and the condition of WCD operation.
Fig. 2 is the exemplary module of explanation WCD 16 or the block diagram of assembly, and described WCD 16 comprises controller 18, and it can place deep power down mode with WCD 16 when WCD 16 operates under the situation of disengaging service.In some cases, if be applied to the UMTS environment, then controller 18 can comprise radio resource controller (RRC), and RRC is the sublayer of UMTS radio interface.WCD 16 also comprises radio-frequency antenna 20, emitter/receiver 22, search module 24, system's determination module 26, acquisition database 30, does not have service timer 32, full rate timer 34, storage arrangement 36 and power supply 38.Power supply 38 is usually with battery-powered, but the technology of describing herein is applicable to can't help battery powered device.
But the readable instruction of storage arrangement 36 storage computation machines, described instruction can be carried out by the processors in the controller 18, to carry out the various aspects of the technology that the present invention describes.Available hardware, software, firmware or its make up the various assemblies such as for example controller 18, system's determination module 26 and search module 24 of realizing WCD 16.For instance, these a little assemblies can be used as the software process of carrying out on lower device and operate: the integrated or discrete logic of one or more microprocessors or digital signal processor (DSP), one or more application-specific integrated circuit (ASIC)s (ASIC), one or more field programmable gate arrays (FPGA) or other equivalence.
When WCD 16 operated under the situation of disengaging service, antenna 20 did not receive the service signals of 12 transmission from the base station on the frequency band that WCD 16 supports.For instance, WCD 16 may experience loss of service during normal running, and perhaps WCD 16 may find service signal when energising.When the user of WCD 16 when advancing beyond the service area of its main PLMN or other any PLMN of on the frequency band that WCD 16 supports, operating, loss of service may take place.
System's determination module 26 main responsible definite WCD 16 should use which technology and service provider.System's determination module 26 can also determine when WCD 16 operates under the situation that breaks away from service.System's determination module 26 sends service request to controller 18.Controller 18 is then controlled emitter/receiver 22 via antenna 20 service request is transferred near any base station 12.For instance, service request can comprise automatic service request or limited service request.Service request is sought the service of normal mode from any available base station 12 automatically.
If the service of normal mode is unavailable, so limited service request can be sought limited service from any available base station 12.Limited service can comprise the emergency wireless service.One or more frequency bands of carrying out the service signal search therein that described service request identification WCD 16 is supported.In some cases, system's determination module 26 is divided at least two band groups with the frequency band of being supported.WCD 16 can support the US and European frequency band both, for example honeycomb fashion 850MHz band, GSM 900MHz band, PCS 1900MHz band or IMT 2100MHz band.System's determination module 26 can be divided into these frequency bands U.S. band group and Europe band group, the i.e. first and second different band groups.
The lower layer signaling of controller 18 main responsible WCD 16 is also controlled WCD 16 as how AD HOC operation, and described pattern for example is a deep power down mode.When system's determination module 26 receives service request, controller 18 can be carried out acquisition database scanning to the frequency band of discerning in the service request.If the service signal in order to operation WCD 16 is not successfully found in acquisition database scanning, then controller 18 can be carried out full rate scanning to the frequency band of discerning in the service request.
Discern in not to service request in acquisition database scanning but frequency band that do not find in acquisition database 30 scans.Pre-loaded channel, the channel of dynamically knowing or the combination of the two of acquisition database 30 storages.Communication service provider can be input to pre-loaded channel in the acquisition database 30 during WCD 16 is programmed.Pre-loaded channel can comprise the common channel of the known signal of offering high-quality service.The channel of dynamically knowing can comprise that WCD 16 before received the channel of service in the above, and can dynamically add acquisition database 30 to by controller 18 between the normal operating period of WCD 16.
If the acquisition database scanning to the automation services request is unsuccessful, but then controller 18 guideline search module 24 are carried out another acquisition database scanning at limited service request.If described two acquisition databases scanning is all unsuccessful, but then controller 18 guideline search module 24 are carried out full rate scanning.In the case, search service signal on each channel of the frequency band in the related service request, discerned of search module 24.Can carry out full rate scanning at the automation services request, subsequently,, then carry out full rate scanning at limited service request if unsuccessful to the full rate scanning of automation services request.
Can carry out acquisition database scanning and full rate scans at different band group, as hereinafter with more detailed description.For instance, can carry out acquisition database scanning in the first band group, wherein comprise the channel of discerning in the automation services request, subsequently, if the automation services request is unsuccessful, then be the channel of discerning in the limited service request.Then, if desired, can use the second band group to repeat the acquisition database of automation services request and limited service request is scanned.
After the acquisition database scanning of having carried out two (or a plurality of) band group, if desired, but controller 18 guideline search module 24 use the first band group to carry out full rate scanning at automation services request and limited service request.Can another full rate scanning (if desired) after this full rate scanning to the use second band group of automation services request and limited service request.Scheme can be finished acquisition database scanning and full rate scanning to the first band group earlier as an alternative, and the database that advances to then the second band group obtains scanning and full rate scanning.
Full rate scanning can comprise rough frequency scanning, is meticulous frequency scanning then, and then is the code space search on each channel.As an illustration, full rate scanning can be attempted to detect service signal in the wide frequency band of 60MHz.According to this example, rough frequency scanning can be in the wide band of the every 2MHz in the wide frequency band of 60MHz the search service signal.Then, the band that 2MHz is wide is arranged with the energy value that successively decreases, because those bands with higher-energy value more likely comprise service signal.Then, fine frequency scanning is the search service signal in through the wide band of every 2kHz of the wide band of the 2MHz that arranges, and the band that 2kHz is wide is arranged with the energy value that successively decreases.Then, code space search search service signal on the particular channel of the wide band of the 2kHz that process is arranged.
If all service signal search are all unsuccessful, then controller 18 places deep power down mode with WCD 16.During deep power down mode, controller 18 reduces power consumption among the WCD 16 by not carrying out service signal search.WCD 16 can keep predefined period under deep power down mode.For instance, WCD 16 can remain in deep power down mode in about 30 seconds to 60 seconds.Controller 18 periodically comes initial wake-up period by the power that increases among the WCD 16.For instance, controller 18 can provide the extra power of battery to controller 18 after with deep power down mode operation WCD 16 and lasting predefined period.
After entering wake-up period, system's determination module 26 sends service request to controller 18 once more.As mentioned above, service request can be discerned a band group that carries out the service signal search therein in each at least two band group that comprise one or more frequency bands that WCD 16 supported.Controller 18 can receive initial service request to one of band group from system's determination module 26, and if unsuccessful based on the service signal search of initial service request, then controller 18 can receive the service request subsequently to another person in the band group.
In some cases, because find service signal on the possibility that WCD 16 can equate any one in band group, so can think that band group equates.As an example, system's determination module 26 can be divided into the frequency band of being supported two equal band groups.Controller 18 can receive the service request to the first band group during first wake-up period, and if in the first band group, do not find service signal, then controller 18 receives the service request to the second band group during second wake-up period.If do not find service signal in the second band group, then controller 18 can receive the service request to the first band group once more during the 3rd wake-up period.
In other cases, because WCD 16 finds the possibility of service signal may be higher than other band group, can think that band group is unequal in one of band group.Because receive service on one or more in the channel that WCD 16 had before been comprised in described band group, so can think that this band group is a high priority band group.As an example, system's determination module 26 can be divided into the frequency band of being supported the high priority first band group and the second band group.Controller 18 can receive a plurality of continuous service request to the high priority first band group during first wake-up period.
As an illustration, controller 18 can receive about ten requests continuously to the high priority first band group.Each request causes another scanning to be attempted, described automation services request and the limited service request of attempting to comprise acquisition database scanning and full rate scanning form.If do not find service signal in the high priority first band group in response to preceding ten requests, then controller 18 can be from the service request of service determination module 26 receptions to the second band group during second wake-up period.If do not find service signal in the second band group, then controller 18 can receive a plurality of continuous service request to the high priority first band group once more during the 3rd wake-up period.
When finding service signal, it is available with the indication service that controller 18 makes the service signal indication turn back to system's determination module 26, and make WCD 16 leave deep power down mode.Antenna 20 can then receive the input signal such as for example paging signal and pilot signal etc. of 12 transmission from the base station.Emitter/receiver 22 comprises the signal that receives in order to processing and exports the circuit of digital value.Consistent with the conventional wireless communication device, emitter/receiver 22 can use low noise amplifier (LNA), RF frequency mixer and analog to digital (A/D) transducer and other suitable assembly (not shown) to handle the signal that receives, to produce the corresponding digital value.
When after receiving service request from system's determination module 26 during the wake-up period, the frequency band of being discerned in 18 pairs of service requests of controller is carried out acquisition database scanning, to find the service signal in order to operation WCD 16.After the service request that receives predetermined number, if acquisition database scanning is unsuccessful, just controller 18 is carried out full rate scanning to the frequency band of being discerned in the service request.In some cases, the predetermined number of service request may be about 12.
Full rate scanning and acquisition database scanning phase relative a large amount of time of specific consumption and power resource.For instance, acquisition database scanning may spend about 0.1 second and finished by 0.2 second.Comparatively speaking, full rate scanning may spend about 15 seconds and finishes.Therefore, controller 18 can enter deep power down mode only preceding 12 service requests are carried out full rate scanning before saving the power among the WCD 16.The number of times that the full rate of carrying out restriction controller 18 scans can reduce the power consumption among the WCD 16 by the time quantum that minimizing WCD 16 wakes up.
In case receive the service request of predetermined number, controller 18 just starts full rate timer 34.Controller 18 can only be carried out the acquisition database scanning to service request during wake-up period, till full rate timer 34 expires.Full rate timer 34 can move about 15 minutes to 30 minutes.When full rate timer 34 expired, controller 18 was carried out full rate scanning to the ensuing service request that receives from system's determination module 26 during wake-up period, and restarts full rate timer 34.
Yet, in some cases, the one or more scanning in the frequency band that controller 18 may be determined not in last full rate scan period WCD 16 to be supported.In the case, controller 18 can then be carried out full rate scanning to the frequency band of these non-scanned before full rate timer 34 expires.Controller 18 also can be carried out full rate scanning to the frequency band that does not have at least one channel that is comprised in the acquisition database 30 before full rate timer 34 expires.
In addition, if each frequency band that 18 couples of WCD 16 of controller are supported has been carried out acquisition database scanning and may have been carried out full rate scanning to it, and still can't find at least one PLMN, then controller 18 starts does not have service timers 32.Though it is movable not having service timer 32, controller 18 returns no service signal in response to the service request that receives from system's determination module 26, and does not carry out any service signal search.Do not have service timer 32 and can move about 10 seconds.When nothing service timer 32 expired, controller 18 was carried out the acquisition database scanning to the ensuing service request that receives from system's determination module 26 at least.The number of times of any service signal search of restriction controller 18 execution can further reduce the power consumption among the WCD16.
Yet in some cases, controller 18 may be determined one or more search the in the frequency band of WCD 16 not being supported during the last service signal search (for example, last acquisition database scanning and/or the scanning of last full rate).Controller 18 can then be carried out acquisition database scanning at least to these frequency bands without search before nothing service timer 32 expires.Therefore, the speed of full rate scanning is carried out in 34 controls of full rate timer, and does not have the period that service timer 32 is stipulated the service signal search lock in response to service request.
Fig. 3 is the flow chart that explanation breaks away from the operation of WCD 16 when the request service of service.This paper will describe described operation with respect to the system's determination module 26 in the WCD 16 of Fig. 2.System's determination module 26 determines when WCD 16 operates (40) under the situation that breaks away from service.The frequency band that system's determination module 26 is then supported WCD 16 is divided into two band groups (42).In other embodiments, system's determination module 26 can be divided into the frequency band of being supported more than two is with group, or only depends on single band group.
If the priority of band group equates (44 "Yes" branches), then find service signal on possibility any one in band group that WCD 16 can equate.For instance, when WCD 16 enters deep power down mode after WCD 16 energisings, can think that band group equates.In the case, WCD 16 may outage with switch between be transported to different geographic areas, for example the person of travelling by air under the situation of seeking after the landing to serve.Under the situation of energising, may have no reason to make the priority of a band group to be higher than another person.Perhaps, WCD 16 can enter deep power down mode behind loss of service during the activity operations.For instance, the user may advance outside the feasible overlay area of any base station 12.In the case, WCD 16 can give higher-priority the last band group of the service that obtains from it before loss of service.
System's determination module 26 sends service request (52) to the first band group to the controller 18 of WCD 16.Service request can comprise the automation services request, if the automation services request is unsuccessful, is limited service request afterwards then.If controller 18 will not turn back to system's determination module 26 (53 "No" branches) from the service signal of the first band group, then system's determination module 26 sends service request (54) to the second band group to the controller 18 of WCD 16.If controller 18 does not turn back to system's determination module 26 (55 "No" branches) with the service signal of the second band group, then system's determination module 26 is once more to the service request (52) of controller 18 transmissions to the first band group.If controller 18 turns back to system's determination module 26 (the "Yes" branches in 53,55) with the service signal of the first band group or the second band group, then system's determination module indication WCD 16 uses the service signal that returns to operate (58).
In some cases, system's determination module 26 can send the service request (52) to the first band group during first wake-up period, and sends the service request (54) to the second band group during second wake-up period.System's determination module 26 can then send the service request to the repetition of the first band group during the 3rd wake-up period.In having the embodiment that equates band group more than two, system's determination module 26 can send the service request to the 3rd band group during the 3rd wake-up period.
If band group unequal (44 "No" branches), then WCD 16 has higher possibility find service signal in band one of group.For instance, the described group that is with may comprise the channels that one or more WCD 16 before received service in the above.System's determination module 26 can then be considered as high priority band group with this band group.System's determination module 26 sends a plurality of continuous service request (46) to high priority band group to the controller 18 of WCD 16.In some cases, system's determination module 26 may send about ten continuous service requests to high priority band group.
If controller 18 does not turn back to system's determination module 26 (47 "No" branches) with the service signal of high priority band group, then system's determination module 26 will turn back to the controller 18 (48) of WCD 16 to another service request with group.If controller 18 does not turn back to system's determination module 26 (49 "No" branches) with the service signal of another band group, then system's determination module 26 is once more to a plurality of continuous service request (46) of controller 18 transmissions to high priority band group.If controller 18 turns back to system's determination module 26 (47,49 "Yes" branches) with the service signal of high priority band group or another band group, then system's determination module is indicated the service signal operation (58) that 16 couples of WCD return.
In some cases, system's determination module 26 can send a plurality of continuous service request (46) to high priority band group during first wake-up period, and sends the service request (48) to another band group during second wake-up period.System's determination module 26 can then send a plurality of continuous service request to the repetition of high priority band group during the 3rd wake-up period.Equating more than two among the embodiment of band group that system's determination module 26 can send the service request to another band group during the 3rd wake-up period.For each band group, as previously mentioned, system's determination module 26 can produce the automation services request, if automation services request subsequently is unsuccessful, then produces limited service request.
When WCD 16 enters deep power down mode after energising, can suppose that all band groups equate, promptly the WCD possibility that can equate obtains service in any band group.In the case, as an illustration, system's determination module 26 of WCD 16 can send service request with following order:
Automation services in the band group 1
Limited service in the band group 1
Automation services in the band group 2
Limited service in the band group 2
WCD enters deep power down mode
WCD wakes up
Automation services in the band group 1
Limited service in the band group 1
WCD enters deep power down mode
WCD wakes up
Automation services in the band group 2
Limited service in the band group 2
More than the cycle of treatment of Zhan Shiing can continue based on iteration.Deep-sleep wakes the duration up can be along with the preceding of circulation and then change.As an illustration, deep-sleep wake the duration up can be as follows:
Preceding 10 circulations 30 seconds
Next 10 circulated 45 seconds
Back 60 seconds of preceding 20 circulations
As implied above, each circulation can comprise the specific full service request of being with in the group, next is the limited service request on it.Above sequence and timing are provided for illustration purpose, and should think that it is the technology limitation that the present invention is described.
When WCD 16 enters deep power down mode behind loss of service, can suppose that all band groups are all unequal.But definite (SD) module 26 of service knows that WCD 16 obtains the last band group of service thereon.Therefore, SD module 26 can give described band group higher priority.As an illustration, originally SD module 26 sends the continuous service request to the band of last acquisition, is the service request to another band subsequently.Then, sending 4 requests continuously in the band group that SD module 26 in the end obtains, is 1 request in another band group subsequently.In the case, as an illustration, system's determination module 26 of WCD16 can send service request with following order after 10 initial requests:
Automation services in the band group 1
Limited service in the band group 1
Automation services in the band group 1
Limited service in the band group 1
Automation services in the band group 1
Limited service in the band group 1
Automation services in the band group 1
Limited service in the band group 1
Automation services in the band group 2
Limited service in the band group 2
Automation services in the band group 1
Limited service in the band group 1
Automation services in the band group 1
Limited service in the band group 1
Automation services in the band group 1
Limited service in the band group 1
Automation services in the band group 1
Limited service in the band group 1
Automation services in the band group 2
Limited service in the band group 2
As summary to example procedure, for preceding 4 service requests that controller 18 receives,, 24 pairs of SD modules 26 of controller guideline search module carry out acquisition database scanning but being reported as the band of being supported by WCD 16, and be full rate scanning subsequently to it.According to the top n that receives from SD module 26 after entering deep-sleep at WCD 16 (for example 12) service request, search module 24 is carried out acquisition database scanning, follows and scans by full rate.
After full rate scanning timer expired, WCD 16 started full rate scanning timer 34 once more and continues 30 minutes after receiving next service request.Yet, in the case, when starting each band of supporting, will carry out single pass at least to it, and no matter the content of full scan timer or acquisition database how.In addition, when WCD 16 was in deep power down mode and controller 18 and receives the automation services request, the PLMN that stipulates in 24 pairs of requests of controller 18 guideline search module carried out acquisition database scanning.If WCD 16 fails to find service on the PLMN of regulation, then controller 18 guideline search module 24 are carried out acquisition database scanning to other PLMN once more.If WCD 16 may still fail positioning service on any PLMN after carrying out full rate scanning, controller 18 is served timer 32 returning the nothing that starts n second (for example 10 seconds) before not having the service indication earlier so.
At this some place, if controller 18 receives any service request when not having 32 activities of service timer, then controller also returns the denial of service request does not at once have the service indication.In this way, controller 18 any service signal search of locking effectively when serverless backup 32 operations.By way of exception, if controller 18 has received the service request of not searched band as yet since do not have the service timer and start, then controller 18 can be ignored the service timer.When WCD 16 finds the service of the service request that controller 18 receives when WCD is in deep-sleep, controller 18 (for example stops all active times relevant with deep power down mode, full rate scanning timer 34 and do not have service timer 32), and service request cycle counter N reset to 0.Above sequence and timing provide for illustration purpose, and should not be counted as limiting the technology that the present invention describes.
Fig. 4 A and 4B are the flow charts that the example operation of the WCD 16 that is in deep-sleep is described.This paper will describe described operation relatively with the controller 18 in the WCD 16 among Fig. 2.After energising or loss of service, controller 18 determines that from system (SD) module 26 receives service request (60).Described service request can comprise the automation services request, and if automation services request failure then comprise limited service request.Described service request can be discerned the band group that comprises one or more frequency bands of carrying out the service signal search therein that WCD 16 supported.Process described herein can be applied to each band group separately, perhaps is applied to all band groups simultaneously.
If do not find service signal (66 "No" branches) by acquisition database scanning, the institute's frequency band of supporting execution full rate of then being discerned in 18 pairs of service requests of controller scans (68).Controller 18 can be carried out full rate scanning by indication search module 24 search service signal on each channel of the frequency band of being discerned.If find service signal (70 "Yes" branches) by full rate scanning, then controller 18 makes the service signal indication turn back to SD module 26 with the indication 16 pairs of service signal that is returned operations of WCD (72).If do not find service signal (70 "No" branches) by full rate scanning, then controller 18 makes no service signal indication turn back to SD module 26 (74).Controller 18 then places deep power down mode (76) with WCD16.Controller 18 can then receive service request (60) from SD module 28 during wake-up period when operating with deep power down mode.Timer can be set to be waken up with the predefined time interval to cause controller 18.
If WCD 16 is with deep power down mode operation (62 "Yes" branches) when receiving service request, then controller 18 determines whether nothing service timer 32 expires (80), shown in Fig. 4 B.If there is not service timer 32 still movable (promptly still not yet due), then controller 18 makes no service signal indication turn back to SD module 26 (108) automatically, and does not carry out any service signal search.Controller 18 can then make WCD 16 return deep power down mode, and continues to receive service request (60) from SD module 28 during wake-up period.
In some cases, scheme as an alternative, controller 18 can be determined one or more search the from do not have the frequency band that service 32 last times of timer have not been supported WCD 16 since expiring.Controller 18 can then be carried out acquisition databases scannings (82) to these frequency bands without search before nothing service timer 32 expires.Do not expired or not in activity if there is service timer 32, then the institute's frequency band of supporting execution acquisition database of the WCD 16 that is discerned in 18 pairs of service requests of controller scans (82).
If find service signal (84 "Yes" branches) by acquisition database scanning, then controller 18 makes the service signal indication turn back to SD module 26, with the indication 16 pairs of service signal that is returned operations of WCD (94).Controller 18 then makes WCD 16 leave deep power down mode (96).If do not find service signal (84 "No" branches) by acquisition database scanning, then controller 18 determines whether to receive service request (86) to the predetermined number (N) of support frequency band from SD module 26.In some cases, N can approximate 12 greatly.
If do not receive N service request as yet from SD module 26, then discerned in 18 pairs of service requests of controller the frequency band of supporting carry out full rate scanning (88) and increase progressively N (90).If receive N service request from SD module 26, then controller 18 is determined full rate timers 34 whether expire (98).If full rate timer 34 has expired or inertia (98 "Yes" branches), then discerned in 18 pairs of service requests of controller the frequency band of supporting carry out full rate scanning (100) and start full rate timer (102).If find service signal (92 "Yes" branches) by arbitrary full rate scanning, then controller 18 makes service signal turn back to SD module 26 with the indication 16 pairs of service signal that is returned operations of WCD (94).Controller 18 then makes WCD 16 leave deep power down mode (96), and WCD 16 can begin normal running in the case.
If full rate timer 34 is movable (98 "No" branches) still, even then acquisition database scanning is unsuccessful, controller 18 is not carried out full rate scanning yet.In this way, WCD 16 has avoided unnecessary full rate scanning, and unnecessary full rate scanning may cause redundant power consumption.In some cases, the one or more scanning the frequency band of WCD 16 not having be supported as yet since controller 18 can be determined to expire from 34 last times of full rate timer.Controller 18 can then be carried out full rate to the frequency band of these non-scanned and scan (100) before full rate timer 34 expires.Controller 18 also can be carried out full rate scanning (100) to the frequency band that does not have at least one channel that is comprised in the acquisition database 30 before full rate timer 34 expires.
If full rate timer 34 still movable (98 "No" branches) if or find service signal (92 "No" branches) by arbitrary full rate scanning, then controller 18 determines whether to find at least one PLMN (104) by acquisition database scanning or full rate scanning.If do not find at least one PLMN (104 "No" branches) as yet, then controller 18 determines whether to receive service request (105) to the predetermined number (N) of the frequency band of being supported from SD module 26 once more.If receive N service request from SD module 26, then controller 18 starts does not have service timer 32 (106), and makes no service signal indication turn back to SD module 26 (108).If do not receive N service request from SD module 26 as yet, then controller 18 directly makes no service signal indication turn back to SD module 26 (108) and not start nothing service timer 32.
If found at least one PLMN (104 "Yes" branches), then controller 18 makes service signal turn back to SD module 26, with the indication 16 pairs of service signal that is returned operations of WCD (94).Controller 18 then makes WCD 16 leave deep power down mode (96), and WCD 16 can begin normal running in the case.
Technology described herein is implemented in available hardware, software, firmware or its any combination.Any feature that is described as module or assembly all can be implemented together in integrated logic device or be embodied as discrete individually but interoperable logic device.If use software implementation, then described technology can partly realize that by for example storage arrangement 36 computer-readable medias such as grade described medium comprise the program code that contains instruction, and one or more in the said method are carried out in described instruction when being performed.In the case, described computer-readable media can comprise for example Synchronous Dynamic Random Access Memory random-access memory (ram)s such as (SDRAM), read-only memory (ROM), nonvolatile RAM (NVRAM), Electrically Erasable Read Only Memory (EEPROM), flash memory, magnetic or optical data storage media etc.
Described program code can be carried out by one or more processors, and described processor for example is the integrated or discrete logic of one or more digital signal processors (DSP), general purpose microprocessor, application-specific integrated circuit (ASIC) (ASIC), field programmable logic array (FPGA) or other equivalence.Therefore, term used herein " processor " can refer to the structure of any above structure or other any suitable enforcement technology described herein.
Each embodiment has been described.For instance, the technology that is used for carrying out with the power consumption that reduces the service signal search when radio communication device is breaking away from operation under the situation of service has been described.Described technology comprises radio communication device is placed deep power down mode, and periodically enters wake-up period, increases power consumption during this period to carry out the service signal search.The time quantum that the number of times of restriction execution service signal search wakes up by the minimizing radio communication device reduces the power consumption in the radio communication device.These and other embodiment belongs to the scope of appended claims.
Claims (42)
1. method, it comprises:
Breaking away from when operating under the situation of serving at radio communication device, placing deep power down mode to reduce the power consumption of described radio communication device described radio communication device;
Periodically increase power in the described radio communication device with initial one or more wake-up periods;
In one or more frequency bands of supporting at described radio communication device during the described wake-up period, carry out the service signal search; And
When described service signal search is unsuccessful, make described radio communication device turn back to described deep power down mode.
2. method according to claim 1, it receives one or more service requests during further being included in described wake-up period, and described service request is identified in described one or more frequency bands of wherein carrying out described service signal search.
3. method according to claim 1, wherein the frequency band with described support is divided at least two band groups, described method receives service request during further being included in described wake-up period, carries out one of described service signal search therein in the described band of the described service request identification group.
4. method according to claim 3 wherein receives service request and comprises:
Reception is to one or more initial service request of one in the described band group; And
When the described service signal search based on described initial service request gets nowhere, receive the subsequent service request of being with another person in the group to described,
Wherein during first wake-up period, receive described initial service request, and during second wake-up period, receive described subsequent service request.
5. method according to claim 3, wherein receive described initial service request and comprise a plurality of initial service request of reception to a high priority band group in the described band group, described high priority band group comprises the channel that described radio communication device had before received service thereon.
6. method according to claim 1, wherein carry out the search of described service signal and comprise the described frequency band that one or more are supported is carried out acquisition database scanning, and wherein carry out search service signal on the channel of frequency band of the described support that described acquisition database scanning is included in the acquisition database to be comprised.
7. method according to claim 6, wherein said acquisition database comprise pre-loaded channel and the channel of dynamically knowing, and the wherein said channel of dynamically knowing comprises that described radio communication device had before received the channel of service thereon.
8. method according to claim 6 is wherein carried out the search of described service signal and is included in described acquisition database scanning and the frequency band of described support is carried out full rate scanning when unsuccessful.
9. method according to claim 8 is wherein carried out search service signal on each channel of frequency band that the scanning of described full rate is included in described support.
10. method according to claim 8, wherein carry out described full rate scanning and comprise:
Frequency band to described support is carried out rough frequency scanning;
Frequency band to described support is carried out meticulous frequency scanning; And
Each channel run time version space search to the frequency band of described support.
11. method according to claim 8 is wherein carried out the scanning of described full rate and is included in the full rate timer and the frequency band of described support is carried out described full rate scanning when expiring.
12. method according to claim 1, wherein the power that periodically increases in the described radio communication device comprises:
Continue predefine after period operating described radio communication device with described deep power down mode, increase power in the described radio communication device with initial described wake-up period.
13. method according to claim 1, it further comprises: during described wake-up period, at the service request of predetermined number, the frequency band of described support is carried out acquisition database scanning and full rate scans both.
14. method according to claim 13, it further comprises: initial full rate timer after the service request of described predetermined number, and during described wake-up period, only the frequency band of described support is carried out acquisition database scanning at service request, till described full rate timer expires.
15. method according to claim 13, it further comprises when when described service signal searching period does not find public land mobile network, after the service request of described predetermined number, start and do not have the service timer, and produce nothing service indication automatically, till described nothing service timer expires.
16. method according to claim 1, it further comprises producing when described service signal search is unsuccessful does not have the service indication, and produces the service indication when described service signal is searched for successfully.
17. method according to claim 1, it further comprises when described service signal is searched for successfully makes described radio communication device leave described deep power down mode.
18. method according to claim 1, wherein said radio communication device support is according to the communication of code division multiple access (CDMA) standard or wideband CDMA (W-CDMA) standard.
19. a computer-readable media that comprises instruction, described instruction causes processor:
Breaking away from when operating under the situation of serving at radio communication device, placing deep power down mode to reduce the power consumption of described radio communication device described radio communication device;
Periodically increase power in the described radio communication device with initial one or more wake-up periods;
In one or more frequency bands of supporting at described radio communication device during the described wake-up period, carry out the service signal search; And
When described service signal search is unsuccessful, make described radio communication device turn back to described deep power down mode.
20. computer-readable media according to claim 19, it further comprises instruction, described instruction causes described processor to receive service request during described wake-up period, and described service request is identified in described one or more frequency bands of wherein carrying out described service signal search.
21. computer-readable media according to claim 19, wherein the frequency band with described support is divided at least two band groups, and described computer-readable media further comprises instruction, and described instruction causes described processor:
During first wake-up period, receive one initial service request in the described band group; And
When the described service signal search based on described initial service request gets nowhere, during second wake-up period, receive the subsequent service request of being with another person in the group to described.
22. computer-readable media according to claim 19, the wherein said instruction that causes described processor to carry out described service signal search causes described processor that the described frequency band that one or more are supported is carried out acquisition database scanning.
23. computer-readable media according to claim 22, the wherein said instruction that causes described processor to carry out described service signal search cause described processor when described acquisition database scanning is unsuccessful the frequency band of described support to be carried out full rate scanning.
24. computer-readable media according to claim 19, it further comprises instruction, and described instruction causes described processor at the service request of predetermined number the frequency band of described support to be carried out acquisition database scanning during described wake-up period and full rate scans both.
25. computer-readable media according to claim 24, it further comprises instruction, described instruction causes described processor to start the full rate timer after the service request of described predetermined number, and during described wake-up period, only the frequency band of described support is carried out acquisition database scanning, till described full rate timer expires at service request.
26. computer-readable media according to claim 24, it further comprises instruction, described instruction causes described processor to start after the service request at described predetermined number when described service signal searching period does not find public land mobile network does not have the service timer, and return no service signal automatically, till described nothing service timer expires.
27. computer-readable media according to claim 19, it further comprises instruction, and described instruction causes described processor to make described radio communication device leave described deep power down mode when described service signal is searched for successfully.
28. computer-readable media according to claim 19, it further comprises instruction, and described instruction causes described processor:
When described service signal search is unsuccessful, produce and do not have the service indication; And
When searching for successfully, described service signal produces the service indication.
29. computer-readable media according to claim 19, wherein said radio communication device support is according to the communication of code division multiple access (CDMA) standard or wideband CDMA (W-CDMA) standard.
30. a radio communication device that comprises controller, described controller:
Breaking away from when operating under the situation of serving at described radio communication device, placing deep power down mode to reduce the power consumption of described radio communication device described radio communication device;
Periodically increase power in the described radio communication device with initial one or more wake-up periods;
In one or more frequency bands of supporting at described radio communication device during the described wake-up period, carry out the service signal search; And
When described service signal search is unsuccessful, make described radio communication device turn back to described deep power down mode.
31. device according to claim 30, it further comprises the system's determination module that is coupled to described controller, described system determination module is producing service request during the described wake-up period in described radio communication device, wherein said service request is identified in the frequency band of wherein carrying out described service signal search.
32. device according to claim 30, it further comprises the system's determination module that is coupled to described controller, and described system determination module is divided at least two band groups, wherein said system determination module with the frequency band of described support:
During first wake-up period, produce one initial service request in the described band group; And
When the described service signal search based on described initial service request gets nowhere, during second wake-up period, produce the subsequent service request of being with another person in the group to described,
Wherein said initial and subsequent service request is identified in wherein carries out the frequency band that described service signal is searched for.
33. device according to claim 30, wherein said initial service request comprises comprising the service request of a high priority band group that described radio communication device had before received the channel of service thereon in the described band group, and described controller receives a plurality of continuous service request to a high priority band group described in the described band group from described system determination module.
34. device according to claim 30, it further comprises search module, wherein said controller guides described search module to carry out acquisition database scanning, with search service signal on the channel of the frequency band of the described support that comprised in the acquisition database in described device.
35. device according to claim 34, wherein said acquisition database comprise pre-loaded channel and the channel of dynamically knowing, the wherein said channel of dynamically knowing comprises that described radio communication device had before received the channel of service thereon.
36. device according to claim 34, wherein said controller guide described search module when described acquisition database scanning is unsuccessful the frequency band of described support to be carried out full rate scanning.
37. device according to claim 36, it further comprises the full rate timer that is coupled to described controller, and wherein said controller guides described search module when described full rate timer expires the frequency band of described support to be carried out described full rate scanning.
38. device according to claim 30, it further comprises the power supply that is coupled to described controller, and described power supply is operated the lasting predefine of described radio communication device at described controller with described deep power down mode provides the power of increase with initial described wake-up period to described controller after period.
39. device according to claim 30, it further comprises the nothing service timer that is coupled to described controller, wherein said controller is when start described nothing service timer when described service signal searching period does not find public land mobile network, and the system determination module of wherein said controller in described radio communication device provides does not have the service indication, till described nothing service timer expires.
40. device according to claim 30, wherein when described service signal search is unsuccessful, the system of described controller in described radio communication device determines that device provides nothing service indication, and when described service signal was searched for successfully, described controller determined that to described system device provides the service indication.
41. device according to claim 30, wherein when described service signal was searched for successfully, described controller made described radio communication device leave described deep power down mode.
42. device according to claim 30, wherein said radio communication device support is according to the communication of code division multiple access (CDMA) standard or wideband CDMA (W-CDMA) standard.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US70672505P | 2005-08-08 | 2005-08-08 | |
| US60/706,725 | 2005-08-08 | ||
| US11/283,100 | 2006-03-06 |
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| CN101273538A true CN101273538A (en) | 2008-09-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2006800351444A Pending CN101273538A (en) | 2005-08-08 | 2006-08-08 | Sleep mode for wireless communication device during out of service operation |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102256013A (en) * | 2011-07-06 | 2011-11-23 | 中科华核电技术研究院有限公司 | Mobile terminal and communication method thereof applied to nuclear power plant |
| CN103260215A (en) * | 2012-02-16 | 2013-08-21 | 深圳富泰宏精密工业有限公司 | Automatic line connection method and automatic line connection system for mobile device |
| CN104469748A (en) * | 2013-09-13 | 2015-03-25 | 高通股份有限公司 | Service interruption recovery for multi-SIM mobile communication device |
| CN105103628A (en) * | 2013-03-15 | 2015-11-25 | 高通股份有限公司 | Power optimizations for challenging wan service conditions |
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2006
- 2006-08-08 CN CNA2006800351444A patent/CN101273538A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102256013A (en) * | 2011-07-06 | 2011-11-23 | 中科华核电技术研究院有限公司 | Mobile terminal and communication method thereof applied to nuclear power plant |
| CN103260215A (en) * | 2012-02-16 | 2013-08-21 | 深圳富泰宏精密工业有限公司 | Automatic line connection method and automatic line connection system for mobile device |
| CN103260215B (en) * | 2012-02-16 | 2018-06-26 | 深圳迈辽技术转移中心有限公司 | Mobile device automatic connecting method and system |
| CN105103628A (en) * | 2013-03-15 | 2015-11-25 | 高通股份有限公司 | Power optimizations for challenging wan service conditions |
| CN105103628B (en) * | 2013-03-15 | 2018-06-12 | 高通股份有限公司 | For the method, equipment and follow-up mechanism of follow-up mechanism |
| CN104469748A (en) * | 2013-09-13 | 2015-03-25 | 高通股份有限公司 | Service interruption recovery for multi-SIM mobile communication device |
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