CN102131261A - Single card terminal and network reselection method - Google Patents
Single card terminal and network reselection method Download PDFInfo
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- H—ELECTRICITY
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- H04W36/14—Reselecting a network or an air interface
- H04W36/144—Reselecting a network or an air interface over a different radio air interface technology
- H04W36/1443—Reselecting a network or an air interface over a different radio air interface technology between licensed networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/24—Reselection being triggered by specific parameters
- H04W36/249—Reselection being triggered by specific parameters according to timing information
Abstract
The embodiment of the invention discloses a single card terminal and a network reselection method. The terminal comprises a 2G processing module and a 3G processing module, wherein the 2G processing module is used for residing a circuit switched (CS) domain in a 2G network preferentially and executing CS domain services; the 3G processing module is used for residing a packet switched (PS) domain in a 3G network preferentially and executing PS domain services; the 3G processing module is also used for detecting 3G network signal intensity; and when the 3G processing module detects that the 3G network signal intensity is not higher than a first threshold and lasts for a first time, the 2G processing module is also used for judging whether the 2G network accords with the PS domain residence condition, if so, the PS domain is resided in the 2G network, and the PS domain services are executed in the 2G network. According to the embodiment of the invention, the PS domain and the CS domain can be resided in different modules respectively, and CS domain services and the PS domain services are given consideration; meanwhile, the network reselection process is accelerated, and the user experience is improved.
Description
Technical field
The present invention relates to communication technical field, relate in particular to single deck tape-recorder terminal and network reselection method.
Background technology
At wireless communication technology field, 2G network and 3G network are to use two kinds of wider networks.Business based on 2G network and 3G network mainly comprises speech business and data service, wherein, speech business is by circuit commutative field (CS territory, Circuit Switched Domain) carries, data service is by packet-switched domain (PS territory, Packet Switched Domain) carry, 2G network and 3G network are all supported CS territory business and PS territory business.Above-mentioned CS territory or PS territory can be understood as the software and hardware set of handling CS territory business (as speech business) or PS territory business (as the data business).
Because 3G network is emerging network with respect to the 2G network; bandwidth ratio 2G network is big, and it is better than 2G network that data service is experienced, but its network coverage does not generally have the 2G network coverage to come ripely; occur not having the situation of 3G signal in actual the use through regular meeting, influenced user experience.In order to improve user experience, also support the 2G network simultaneously the terminal of existing 3G network (as 3G mobile), so that gravity treatment is to the 2G network in the 3G signal difference.Here claim this class not only to support the 2G network but also support the terminal of 3G network to be " dual-mode terminal " (as WCDMA/GSM bimodulus, TD-SCDMA/GSM dual-mode handset), wherein, will use the terminal of a SIM card to be called again " single deck tape-recorder dual-mode terminal ".
Referring to Fig. 1, be the structural representation of single deck tape-recorder dual-mode terminal in the prior art, for convenience of description, only listed several main functional modules here, comprising:
SIM card, the SIM card proxy module, application program, professional adaptation module, 2G/3G protocol stack processing module, 2G/3G physical layer process module, 2G/3G radio frequency processing module and antenna, wherein:
SIM card is used to store some information of user, comprises the information of user at 2G network and 3G network, and the SIM card here can be the SIM card that the 2G network often uses, perhaps more senior usim card;
The SIM card proxy module is used for acting on behalf of when 2G/3G protocol stack processing module visit SIM card, enables 2G or 3G subscription information corresponding in 2G and 3G network conditional access SIM card;
Application program is meant follows business or controls some relevant programs in the terminal;
Professional adaptation module is used to connect application program and 2G/3G protocol stack processing module, is mainly used in the resident state according to the 2G/3G protocol stack, selects suitable protocol stack transport service.
2G/3G protocol stack processing module is used to handle 2G and the relevant agreement of 3G, and the agreement here generally is meant the agreement that physical layer is above, as MAC/RLC/RRC etc.
2G/3G physical layer process module is used to handle 2G and the relevant agreement of 3G physical layer;
2G/3G radio frequency processing module is used to finish 2G and the relevant processing capacity of 3G radio-frequency module;
Antenna is finished the reception and the emission of 2G and 3G signal.
Preferentially reside in 3G network based on above-mentioned single deck tape-recorder dual-mode terminal, under 3G network, handle CS territory and PS territory business by modules such as 2G/3G protocol stack processing module, 2G/3G physical layer process module and 2G/3G radio frequency processing modules, terminal at regular intervals (as several seconds) judge self network signal quality whether less than the threshold value of setting (as S
SearchRAT), if, then begin to search for different grid (refer to be different from present residing system, as being positioned at 3G network now, then the 2G network is different grid, specifically can comprise a plurality of subzone networks), obtain a plurality of different grid signals; Then these signals are sorted, select the strongest different grid of signal strength signal intensity and with self network signal relatively, when being better than self certain thresholding of network signal, carry out gravity treatment.Wherein, above-mentioned steps is the flow process that defines in the standard all, does not repeat them here.In like manner, if terminal is positioned at the 2G network now, and be in Idle state, the step that reselects to 3G network is also similar with said method, judging at regular intervals earlier promptly whether self signal quality satisfies starts the search thresholding, satisfy condition the back to systematic search, find out the strongest different grid and self network signal relatively, or whether determine greater than certain thresholding whether gravity treatment is to different system according to different system cell intensity.
The inventor finds that there is following shortcoming at least in prior art in realizing process of the present invention:
When existing single deck tape-recorder dual-mode terminal from a network reselection to another network the time, can have the untouchable time of a section business, promptly during this period of time can cause professional interruption, be that CS territory business or PS territory business all can't be carried out.Simultaneously, need to search for different grid signal owing to reselect in the flow process of different grid, and judge ordering, this flow process can not be finished at short notice, thereby has increased the professional untouchable time, has influenced user experience.
Summary of the invention
The embodiment of the invention provides a kind of single deck tape-recorder terminal and network reselection method, is used to improve user experience.
Wherein, the embodiment of the invention provides a kind of single deck tape-recorder terminal, comprising:
The 2G processing module is used for the preferential resident 2G network that arrives in CS territory is carried out CS territory business;
The 3G processing module is used for the preferential resident 3G network that arrives in PS territory is carried out PS territory business;
Described 3G processing module also is used to detect the 3G network signal strength signal intensity; When described 3G processing module detects the 3G network signal strength signal intensity and is not higher than first thresholding and the lasting very first time, described 2G processing module also is used for, and judges whether the 2G network satisfies the resident condition in PS territory, if, the PS territory is resident to the 2G network, carry out PS territory business at the 2G network.
The embodiment of the invention also provides a kind of network reselection method, comprising:
The CS territory is preferential resident to the 2G network, carry out CS territory business;
The PS territory is preferential resident to 3G network, carry out PS territory business;
Detect the 3G network signal strength signal intensity, when detecting the 3G network signal strength signal intensity and be not higher than first thresholding and the lasting very first time, judge whether the 2G network satisfies the resident condition in PS territory, if, the PS territory is resident to the 2G network, in 2G network execution PS territory business.
Have following advantage in the technique scheme:
Because the embodiment of the invention is preferential resident respectively to 2G network and 3G network with CS territory and PS territory, the 2G network signal covers and generally is better than 3G network, and the data transmission bauds of 3G network is better than the 2G network, therefore, both can satisfy communicating requirement, and also can enjoy data service at a high speed speech business (CS territory business); Simultaneously, when network generation gravity treatment, do not need to search in the embodiment of the invention, but condition satisfies directly gravity treatment of back, thereby accelerated gravity treatment speed, and then more a step ground has improved user experience as prior art.
Description of drawings
In order to be illustrated more clearly in the technical scheme in the embodiment of the invention, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is a prior art single deck tape-recorder dual-mode terminal structural representation;
Fig. 2 is the embodiment of the invention one a terminal structure schematic diagram;
Fig. 3 is another structural representation of the embodiment of the invention one terminal;
Fig. 4 is the embodiment of the invention three flow chart when business state is carried out gravity treatment;
Fig. 5 is the embodiment of the invention four network reselection method flow charts.
Embodiment
For making purpose of the present invention, technical scheme and advantage clearer, below will the present invention be described in further detail by specific embodiment and relevant drawings.
Embodiment one
The embodiment of the invention one provides a kind of terminal, and this terminal is also referred to as " single deck tape-recorder double-standby terminal ", promptly based on a SIM card, and support resident 2G network and 3G network simultaneously, the 2G network here can be the GSM network, and 3G network can be networks such as TD-SCDMA, WCDMA.
Referring to Fig. 2, be the structural representation of the embodiment of the invention, with different being of single deck tape-recorder dual-mode terminal of the prior art shown in Figure 1, in the embodiment of the invention, comprise independently processing module of 22 two of 2G processing module 21 and 3G processing modules, be used for handling respectively 2G business and 3G business.Concrete, referring to Fig. 3, be the concrete structure schematic diagram of 2G processing module and 3G processing module, wherein, the 2G processing module comprises 2G protocol stack processing module 211,2G physical layer process module 212,2G radio frequency processing module 213 and 2G antenna 214; The 3G processing module comprises 3G protocol stack processing module 221,3G physical layer process module 222,3G radio frequency processing module 223 and 3G antenna 224.
The related protocol that 2G protocol stack processing module is used to finish the 2G network is handled, and these agreements are generally the above agreement of physical layer; 2G physical layer process module is used to finish the processing of physical layer data; 2G radio frequency processing module is used to finish the processing to the 2G radiofrequency signal; The 2G antenna is used to finish the signal emission and reception of 2G network.
Similar with the submodule in each 2G processing module, in the 3G processing module, the related protocol that 3G protocol stack processing module is used to finish 3G network is handled; 3G physical layer process module is used to finish the processing of physical layer data; 3G radio frequency processing module is used to finish the processing to the 3G radiofrequency signal; The 3G antenna is used to finish the signal emission and reception of 3G network.
In addition, similar with terminal of the prior art, embodiment of the invention terminal also comprises SIM card 23, SIM card proxy module 24, application program 25 and professional adaptation module 26.The function of each module had had introduction in background technology, no longer specifically describe here.Need to prove, in the embodiment of the invention, SIM proxy module and professional adaptation module all link to each other with 2G protocol stack processing module and 3G protocol stack processing module respectively, though concrete annexation is compared with respect to prior art and has been produced variation, but the basic function of SIM proxy module and professional adaptation module does not change, and acts on behalf of when promptly the SIM proxy module is used for heterogeneous networks processing module visit SIM card; Professional adaptation module is used for the resident state according to 2G protocol stack processing module and 3G protocol stack processing module, selects suitable protocol stack transport service.In addition, in the embodiment of the invention, professional adaptation module also is used for 2G protocol stack processing module and 3G protocol stack processing module are carried out Coordination Treatment, for example, can plan as a whole both states, and wherein one state is told to another person.
Need to prove, some function in above-mentioned each module also can be separately by other or be integrated into other modules and realize, for example, the pool function of business module module, can do a module separately, perhaps be integrated into 2G protocol stack processing module, perhaps in the 3G protocol stack processing module.For example, when specifically realizing with hardware, the module (comprising processing modules such as protocol stack, physical layer) of supposing the 2G function realizes with chip piece, the module of 3G function (comprising processing modules such as protocol stack, physical layer) realizes with another chip block, then both can be programmed on the chip of realizing the 2G functional module, perhaps also can be programmed on the chip of realizing the 3G functional module about the code of planning as a whole both states.
For convenience of description, in the embodiment of the invention, unified 2G processing module or the 3G processing module used described corresponding step, and do not use each submodule in 2G processing module or the 3G processing module to describe corresponding step in detail.For example, when terminal receive that 3G network issues with professional certain the relevant parameter of 3G, and when carrying out respective handling, be described as in the embodiment of the invention: " the 3G processing module receives certain parameter that 3G network issues, and handles accordingly "; Those skilled in the art can know in conjunction with the embodiment of the invention and prior art, the flow process that this step is detailed is: " receiving the parameter (radiofrequency signal) that 3G network issues by the 3G antenna earlier; then the radiofrequency signal that receives is given to 3G radio frequency processing module; radiofrequency signal is handled; the signal after will handling again sends to 3G physical layer process module; carry out physical layer process by 3G physical layer process module; send to 3G protocol stack processing module after the 3G physical layer block is finished dealing with, parameter is handled accordingly ".
Based on Fig. 3 the embodiment of the invention is specifically introduced below, in the embodiment of the invention:
The 2G processing module is used for the preferential resident 2G network that arrives in CS territory is carried out CS territory business;
The 3G processing module is used for the preferential resident 3G network that arrives in PS territory is carried out PS territory business;
The 3G processing module also is used for, and detects the 3G network signal strength signal intensity; When described 3G processing module detects the 3G network signal strength signal intensity and is not higher than first thresholding and the lasting very first time, described 2G processing module also is used for, and judges whether the 2G network satisfies the resident condition in PS territory, if, the PS territory is resident to the 2G network, carry out PS territory business at the 2G network.
In the embodiment of the invention, 2G/3G processing module of the prior art is split into two independently 2G processing module and 3G processing modules, by 2G processing module and 3G processing module difference priority treatment CS territory and PS territory business, because the CS territory mainly comprises speech business (as calling), it is unreachable responsive more to business, if the user can not converse, can greatly influence user experience in a period of time.And the embodiment of the invention preferentially resides in the CS territory 2G network since the 2G network to compare 3G network all more stable in general, therefore, can guarantee the quality of CS territory business.Simultaneously, the embodiment of the invention preferentially resides in 3G with PS territory business (as the data business), and the high speed data transfer characteristic that can preferentially make full use of 3G network is finished data service better; Simultaneously, the embodiment of the invention provides a kind of new network reselection mode based on this new Terminal Design framework, condition with the PS territory from the 3G network gravity treatment to the 2G network for " the 3G network signal is lower than the threshold value of setting and continues for some time; and the 2G network signal satisfies the professional resident condition in PS territory of 3G correspondence ", wherein, " continue for some time " to help making more accurately and judge, it is (all fine in most time signals as network signal to prevent unnecessary gravity treatment, but just decline occurred in certain very short time, then gravity treatment this moment just seems unnecessary).Simultaneously, with respect to prior art, the embodiment of the invention direct gravity treatment when satisfying above-mentioned rule do not need to search for available network again, and search procedure can expend the regular hour, therefore, dispense the time that these search procedures can reduce (comprise follow-up ordering, select maximum, relatively wait step) network reselection, also promptly shorten the professional unreachable time, improved user's experience.
Embodiment two
The embodiment of the invention comes the present invention program is further illustrated based on the foregoing description one.
In the embodiment of the invention, " the CS territory is resident to the 2G network " be can be understood as: terminal is initiated LAU (Location Area Update, location area updating) process and is attached to the 2G network; Simultaneously, " the PS territory is resident to 3G network " be can be understood as: terminal initiation GPRS adheres to or RAU (Route Area Update, Routing Area Update) makes it be attached to 3G network.Those skilled in the art can be resident to the 2G network with the CS territory according to the embodiment of the invention and existing techniques in realizing, and are perhaps that the PS territory is resident to 3G network, do not repeat them here.
The flow process of 3G processing module detection 3G network signal can detect the flow process of 3G network signal referring to existing 2G/3G processing module (comprising processing modules such as protocol stack, physical layer, radio frequency) in the embodiment of the invention when operating in the 3G state, all can uninterruptedly periodically detect after the general start, here " uninterrupted regularly detection " refers at set intervals and detects once, and continue to carry out always, method commonly used is to carry out periodicity to detect, and promptly detects once every the one identical period (as 3 seconds); Certainly the present invention does not limit yet and uses other custom rules (as a period of time intercycle detection, aperiodicity detects in another section period) to carry out " uninterruptedly regularly detecting ".
In the embodiment of the invention, the PS territory from the 3G network gravity treatment behind the 2G network, follow-up when the 3G network signal recovers, can also return 3G network.Concrete, when the 3G network signal strength signal intensity that obtains by detection when the 3G processing module is not less than another thresholding of setting and another time of continuing that the PS territory is resident to 3G network, carry out PS territory business at 3G network.
In like manner,, also can between 2G network and 3G network, carry out gravity treatment at the CS territory, concrete:
The 2G processing module also is used to detect the 2G network signal intensity, and detection method detects the flow process of 2G network signal intensity in the time of can operating in the 2G state with reference to existing 2G/3G processing module; 2G processing module in the embodiment of the invention and 3G processing module are two independently modules, two search procedures of executed in parallel, and the search procedure of one of them processing module does not also rely on another processing module.
When the 2G processing module detects that the 2G network signal intensity is not higher than the thresholding of setting and when continuing for some time, the 3G processing module also is used for, and judges whether 3G network satisfies the resident condition in CS territory, if, the CS territory is resident to 3G network, carry out CS territory business at 3G network.
Resident when the 3G network when the CS territory, the 2G processing module also is used for:
When detecting the 2G network signal intensity and be not less than another thresholding of setting and continue another time, the CS territory is resident to the 2G network, carry out CS territory business at the 2G network.
The decision rule of above-mentioned PS territory from the 3G network gravity treatment to the 2G network goes for Idle state (referring to eat dishes without rice or wine not exist Traffic Channel) and business state (referring to eat dishes without rice or wine to exist Traffic Channel), but consider when the PS territory is in business state, if gravity treatment too frequently can impact business, therefore, can establish smallerly than the thresholding of Idle state thresholding.
In addition, when the PS territory was positioned at 3G network and is in business state, described 3G processing module also was used for carrying out cell update when radio link failure takes place, if upgrade unsuccessful, then that the PS territory is resident to the GSM network.Though because signal is more intense sometimes, (Radio Link, RL) step-out (as being caused by link interference) therefore, when radio link failure takes place, need be carried out cell update, if unsuccessful, then also need gravity treatment to arrive the GSM network can Radio Link.
In the embodiment of the invention, the PS territory need judge whether the 2G network satisfies the resident condition in PS territory during from the 3G network gravity treatment to the 2G network; Need also when simultaneously, the CS territory is from the 2G network reselection to 3G network to judge whether 3G network satisfies the resident condition in CS territory.Concrete determination methods can adopt following several:
One, by signal strength signal intensity and thresholding
Whether the signal strength signal intensity of judging network greater than a thresholding, if then resident condition is satisfied in expression, if not, foot with thumb down.This scheme can for example, can judge that certainly, the embodiment of the invention does not limit yet uses other thresholding to judge with reference to decision methods more of the prior art by the S criterion.
Two, by judging that gravity treatment purpose network is whether resident business arranged
Concrete, if the CS of having territory business need be from the 3G network gravity treatment to the 2G network time, be judged in the 2G network in the PS territory whether resident, if, then carry out gravity treatment, otherwise, do not carry out gravity treatment; Simultaneously, when the CS territory need be from the 2G network reselection to 3G network, judge in the 3G network the whether resident PS of having territory business, if, then gravity treatment, otherwise, do not carry out gravity treatment.
Judge whether another network has corresponding business to be finished by professional adaptation module, the result that will obtain is transmitted to the 2G processing module with the resident 2G of arriving in PS territory then, perhaps is transmitted to the 3G processing module, and the CS territory is resident to 3G.
In the embodiment of the invention, above-mentioned each thresholding and lasting time can be adopted different values at different scenes, threshold value at the PS territory from the 3G network gravity treatment to the 2G network, perhaps all should get a suitable value at the threshold value of CS territory from the 2G network reselection to 3G network, in order to avoid when too big, cause frequent gravity treatment, hour causing very much PS territory call completion rate to reduce, also make terminal reside in 3G network simultaneously as far as possible.As for the concrete selection mode of " suitable value ", can specifically not limit here according to the operation strategy or the decision of other factors of test, local networks state and operator.
Simultaneously, the 2G offered load is generally all heavier in the existing network, and the 3G network load is lighter, 2G network capacity extension difficulty, but the waste of 3G network underloading.At this network characteristics, the PS business can be established a more reasonably value (establishing lowlyer) than existing dual-mode terminal from the 3G network gravity treatment to the thresholding of 2G network, make PS territory business stay 3G network as far as possible, give full play to the effect of 3G network shunting 2G Network data, make that the load of two networks is balanced more.
In the embodiment of the invention, the thresholding during from the 2G network reselection to 3G network is less than the thresholding from the 3G network gravity treatment to the 2G network, to avoid causing ping-pong reselection.
In addition, various parameters in the embodiment of the invention (comprising thresholding and duration) can be by local configuration, perhaps issue and obtain by network, the information that the mode that issues by network obtains can be more more flexibly, because network side can be according to the Cover Characteristics of concrete network and the operation strategy of different times, configured threshold and duration value more accurately.
Embodiment three
The embodiment of the invention is the GSM network based on the foregoing description one, two with the 2G network, and 3G network is that TD-SCDMA (hereinafter to be referred as the TD network) describes for example.
For convenience of description, in the embodiment of the invention, the 2G processing module is renamed as " GSM processing module "; The 3G processing module is renamed as " TD processing module ", be understandable that, GSM processing module and TD processing module are respectively specific implementations of 2G processing module and 3G processing module, the function GSM processing module that the 2G processing module has in the middle of the embodiment one, two also has, and the function TD processing module that the 3G processing module has in the middle of the embodiment one, two also has.
The whole process that gravity treatment takes place with a terminal from starting shooting to is that example describes below.
1. starting up of terminal
When starting up of terminal, the GSM processing module starts the suitable GSM network of search, and is concrete, obtains the strongest GSM sub-district of GSM signal by search, and follow-up execution CS attachment flow is resident to the GSM network with the CS territory; The TD processing module TD network that also parallel search is suitable (TD sub-district), and carry out PS territory attachment flow, the PS territory is resident to the TD network.
In above-mentioned resident process, be understandable that to also have a judgement whether can carry out resident process, wherein, judge that whether GSM and TD network are to be fit to residently when professional, can adopt the S criterion of conformance with standard agreement, that is:
Srxlev＞0 (rule 1)
Wherein, Srxlev=Q
Rxlevmeas-Qrxlevmin-Pcompensation;
When above-mentioned formula 1 condition satisfied, the network of selecting to search carried out resident; Otherwise, then not resident.
Perhaps, judge whether GSM and TD network are fit to when resident, the decision rule of using in the time of also can be by following the 3rd subnetwork gravity treatment is judged.
After resident finishing, follow-up 2G processing module and 3G processing module all can uninterruptedly regularly detect the signal of each automatic network, and concrete interlude and detection strategy can be identical, also can be different.
2. state after starting shooting
After the start, under terminal was in Idle state, can there be several like this situations in residing network:
Scene 1:TD network has signal, and the GSM network has signal;
Scene 2:TD network has signal, GSM network no signal;
Scene 3:TD network no signal, the GSM network has signal;
Scene 4:TD network no signal, GSM network no signal;
Above-mentioned have signal to can be understood as signal to meet professional resident condition, and no signal can be understood as the professional resident condition that do not meet.
Along with the variation of the residing network environment of terminal, send out and between these several scenes, gravity treatment takes place, below, will come the decision rule of gravity treatment is specifically described by the 3rd part " network reselection ".
3. network reselection
Because in the embodiment of the invention, TD processing module and GSM processing module are two independently modules, these two modules are carried out searching and detecting to network signal independently of one another, therefore, respectively the signal variation of TD network and the signal variation of GSM network are described here:
3.1TD network signal changes
When the PS territory resided in the TD network, the TD processing module obtained the TD network signal by detection, and whether was fit to carry out business in conjunction with following rule judgment TD network:
T (Srxlev＜=S
TDidletogsm-SUDS)＞Treselection
s(rule 2)
Wherein, Srxlev represents the TD network signal intensity, is specially Srxlev=Q
Rxlevmeas-Qrxlevmin-Pcompensation, S here
TDidletogsm-SUDSThreshold value is to be obtained by this locality configuration, also can issue Srxlev and Treselection from network
sConcrete implication can be referring to the definition in the standard, S
TDidletogsm-SUDSThe expression threshold level; Treselection
sThe time that expression continues; Duration when expression formula in the bracket is satisfied in t () expression.Whole rule expression TD network signal Srxlev is smaller or equal to threshold level S
TDidletogsm-SUDS, and the duration is greater than Treselection
s
If satisfy rule 2, represent that then the TD network does not satisfy the condition that resides in the TD network; When the TD processing module knows that the TD network is not suitable for carrying out business, and know that the GSM network is fit to (as judging by the S criterion, perhaps knowing that by professional adaptation module the CS territory resides in the GSM network) when resident, the PS territory is resident to the GSM network.
In the middle of the practical application, for make the PS territory reside in as much as possible the TD network (in the existing network the general load of GSM bigger, the TD offered load is less, resides in the TD network more and can be GSM network load sharing; Simultaneously, can enjoy high-speed data service more fully at the TD network), S
TDidletogsm-SUDSValue should be a little bit smaller, if configuration is too big, gravity treatment is frequent, influences the TD network utilization, but can not be too little, otherwise can cause PS territory call completion rate to reduce (the too low still not gravity treatment of signal strength signal intensity causes carrying out the business difficulty).
Concrete, S
TDidletogsm-SUDSValue can deduct a deviant S based on existing threshold value SsearchRAT on the SsearchRAT basis
TDoffsetXidletogsm(can rule of thumb be worth value as acquiescence is 3dB); Because existing threshold value SsearchRAT is a value that issues Network Based, can be used for gravity treatment more accurately and judges.In another implementation, S
TDidletogsm-SUDSValue also can be applicable to all-network, as give tacit consent to desirable empirical value 5dB only based on a fixing thresholding.
In addition, rule of thumb, above-mentioned Qrxlevmin one general configuration-103dBm, Treselections generally was configured to 2 seconds.
Resident when the GSM network when the PS territory, the TD processing module obtains the TD network signal by search, and whether is fit to carry out business in conjunction with following rule judgment TD network:
T (Srxlev＞S
TDrtn-SUDS)＞T
TDrtn-SUDS(rule 3)
Wherein, Srxlev represents the TD network signal; S
TDrtn-SUDSThe expression threshold value; T
TDrtn-SUDSThe expression duration; Duration when expression formula in the bracket is satisfied in t () expression.Whole rule expression TD network signal S
RxlevGreater than threshold level S
TDrtn-SUDS, and the duration is greater than T
TDrtn-SUDS
Regular 3 the time when satisfying, expression TD network satisfies resident condition; Otherwise expression TD network does not satisfy resident condition.When the TD processing module knows that by rule 3 the TD network satisfies resident condition, that the PS territory is resident to the TD network from the GSM network again.
For fear of frequent gravity treatment, S
TDrtn-SUDSValue suggestion compare S
TDidletogsm-SUDSBig, concrete, S
TDrtn-SUDSCan be based on S
TDidletogsm-SUDS, at S
TDidletogsm-SUDSOn add a deviant S
TDoffsetXidlertn(desirable default value 4dB).But can not be too big, return the TD network in order to avoid be difficult to gravity treatment, influence the TD network utilization, then can cause gravity treatment frequent too for a short time, experience lf being influenced, proposed arrangement 9dB; T
TDrtn-SUDSNeed the variation speed of concrete wireless environment to decide default value 5 seconds.
3.2GSM network signal changes
When the CS territory resided in the GSM network, the GSM processing module obtained the GSM network signal by search, and whether was fit to carry out business in conjunction with following rule judgment GSM network:
T (Srxlev＜=0)＞T3 (rule 4)
Wherein, Srxlev represents the GSM network signal, is the signal strength expression mode that defines in the standard; 0 expression decision threshold; T3 represents the duration; Duration when expression formula in the bracket is satisfied in t () expression; Whole rule expression GSM network signal Srxlev is greater than 0, and the duration is greater than T3.
If satisfy rule 4, it is resident to represent that then the GSM network is not suitable for; Otherwise expression GSM network is fit to resident.To know that the GSM network is not suitable for resident when the GSM processing module, and know that whether resident the TD network be fit to when resident (can pass through the S criterion, perhaps judge the TD network PS of having territory business), with the resident TD network that arrives in CS territory.
In order to prevent ping-pong phenomenon (gravity treatment back and forth), T3 can be provided with longerly, for example, is defaulted as 180 seconds here, certainly, also can be configured to other values in actual the use.
The difference of this judgment criterion and prior art dual-mode terminal only is in the long-time unavailable ability gravity treatment of GSM to the TD network, do not consider that the TD network signal is good to go over regard to gravity treatment.
Resident when the TD network when the CS territory, the GSM processing module obtains the GSM network signal by detection, and whether is fit to carry out business in conjunction with following rule judgment GSM network:
T (Srxlev＞0)＞T3 ' (rule 5)
Wherein, Srxlev represents the GSM network signal; 0 expression decision threshold; T3 represents the duration; Duration when expression formula in the bracket is satisfied in t () expression; Whole rule expression GSM network signal S
RxlevGreater than 0, and the duration is greater than T3 '.
If satisfy rule 5, it is resident to represent that then the GSM network is fit to; Otherwise expression GSM network is not suitable for resident.Know the GSM network when the GSM processing module and be fit to when resident, the CS territory is resident to the GSM network.
In order to prevent ping-pong phenomenon, T3 ' can be defaulted as 60 seconds here.
The difference of this judgment criterion and prior art dual-mode terminal is as long as recover a period of time at the GSM network signal, with regard to gravity treatment meeting GSM network, do not consider the TD network signal OK.
Above-mentioned paragraph has mainly illustrated in the Idle state method of reselecting network that whether judges, has come determination methods is described at business state below.
For the terminal that is in business state, judgment principle total during above-mentioned Idle state is suitable for too, judge promptly whether signal strength signal intensity is not less than (not being higher than) certain threshold value, and continue for some time, but owing to be in business state, the gravity treatment meeting produces certain influence to business when considering business, therefore, than Idle state, the condition of gravity treatment should be stricter, the gravity treatment of promptly trying not.
Concrete, the judgment condition at the PS territory during from the 3G network gravity treatment to the 2G network can for:
T (Srxlev＜=(S
TDidletogsm-SUDS-S
Offset))＞T
TDconntogsm-SUDS, (rule 6)
Wherein, Srxlev represents signal strength signal intensity, is a parameter that defines in the standard; S
TDidletogsm-SUDSBe the decision gate limit value in rule 2 (Idle state), when business state, last thresholding also needs to deduct S again
Offset, like this, the threshold value of judgement is just little during than Idle state, also promptly represent Srxlev will be more hour just judgement carry out gravity treatment, make reselection conditions strict more.
Simultaneously, at the TD of different carrier frequency, deviant S
OffsetAlso can be different, as at the R4 carrier frequency, this value can default to 1dB; At the HSDPA carrier frequency, this value acquiescence can be 3dB.
Get back to 3G network for the PS territory from 2G, and the decision rule of CS territory gravity treatment between 3G network and 2G network can not repeat them here with reference to the rule of Idle state.
In addition, when terminal is in business state, also can there be the problem of radio link failure (RL step-out),,, but in fact can not carries out business well, also need gravity treatment even signal strength signal intensity satisfies resident condition so if there is the RL step-out.In that RL step-out and follow-up handling process take place is the flow process that defines in the standard all, does not repeat them here.
Referring to Fig. 4, when being in business state for the PS territory, the schematic flow sheet from the TD gravity treatment to GSM:
This flowcharting, the PS territory has dual mode from the TD gravity treatment to the GSM network, and the one, satisfy following relational expression, promptly signal strength signal intensity is not higher than certain thresholding, and continues for some time:
T (Q
Rxlevmeas＜=Q)＞T (rule 7)
Wherein, Q
RxlevmeasThe expression signal strength signal intensity, Q represents that thresholding T represents the duration; Here supposing that thresholding is issued by network obtains, if thresholding is disposed by this locality, signal strength signal intensity also can be used S
Rxlev
Concrete, at the R4 carrier frequency, Q specifically is expressed as Q
TDR4conntogsm-SUDS, T specifically is expressed as T
TDconntogsm-SUDSAt the HSDPA carrier frequency, Q specifically is expressed as Q
TDHSconntogsm-SUDS, T still is expressed as T
TDconntogsm-SUDSThe configuration of these two thresholdings is too low, and the cutting off rate of PS can rise, and too high meeting causes gravity treatment frequent, reduces the utilance of TD network.Suggestion Q
TDR4conntogsm-SUDSConfiguration-99dBm, Q
TDHSconntogsm-SUDSConfiguration-101dBm, T
TDconntogsm-SUDSProposed arrangement 1280ms.
The second way is when the RL step-out, carries out cell update, if not success, also gravity treatment is to the GSM network, and the flow process in this mode can not repeat them here referring to flow process of the prior art.
In addition, PS territory business state judges whether can also adopt following method from the 3G network gravity treatment to the 2G network:
Terminal is when carrying out PS territory business, when sending business request information (RRC SETUP message), carrying on network a sign, being designated this terminal is common single deck tape-recorder dual-mode terminal in the prior art, after network is received message, judge whether that by existing procedure (flow process of judging at common single deck tape-recorder bimodulus in the prior art) gravity treatment arrives the GSM network.
The various parameters of above-mentioned appearance (comprising each thresholding, duration) can be local configurations, perhaps issue and obtain by network, for example, issue parameter by TD network RNC broadcast system message, expansion SIB3 (System information block 3, System Information Block type 3), various parameters are placed among the SIB3 send to terminal after the MappingInfo field in the CellSelectReselectInfo structure.
Concrete, mode that can employing table 1 is expanded the MappingInfo field:
MappingInfo field after table 1 expansion
The implication that each field is represented in the above-mentioned table 1 is known in those skilled in the art, and those skilled in the art can realize by the content in the table 1 issuing parameter by network.
The embodiment of the invention has been introduced the terminal and the concrete processing method of carrying out " single deck tape-recorder is two to be treated " based on GSM network and TD network, in embodiments of the present invention, two modules are worked simultaneously, the CS territory is preferentially resided in the GSM network, PS is preferentially resided in the TD network, because the GSM network generally covers better than the TD network signal, therefore, can promote based on the CS territory service-user of speech business and experience, simultaneously, also can utilize the TD network to enjoy data service at a high speed.
In addition, when knowing that by decision rule certain network is not suitable for when resident, can gravity treatment to another network, and do not need to restart different systematic search network, thereby shortened the gravity treatment time, promoted user experience; Simultaneously, reuse adoption process does not also compare the signal strength signal intensity of two systems, therefore, has also simplified the processing of terminal when promoting user experience.
Once more, (the GSM offered load is heavier at the actual features of existing network, the TD load is lighter, GSM network capacity extension difficulty, the waste of 3G network underloading), the gravity treatment thresholding can be established to such an extent that establish lowlyer (as on the SsearchRAT basis, deducting a deviant), can make the PS business stay the TD network so as far as possible than existing dual-mode terminal, give full play to the effect of TD network shunting GSM network data service, make that the load of two networks is balanced more.
Need to prove that though the embodiment of the invention is the GSM network with the 2G network, 3G network is that example describes for the TD network, the flow process of handling is equally applicable to the network of 3G network for other standards (as WCDMA), and also can obtain the similar techniques effect.Those skilled in the art can be in conjunction with concrete parameter-definition in the embodiment of the invention and other network formats, carries out adaptability revision and is implemented in selection gravity treatment between other 3G networks and the 2G network.Simultaneously, the embodiment of the invention also can be applied to LTE and GSM, and the perhaps combination of LTE and 3G network promptly earlier preferentially resides in the GSM network with the CS territory, and the PS territory is preferentially resided in the LTE network; Perhaps earlier CS is preferentially resided in 3G network, the PS territory is preferentially resided in the LTE network.Perhaps, the embodiment of the invention also can be applied to network and existing (or unknown) combination of network of other unknown support CS territories and PS territory business.
Embodiment four
The embodiment of the invention provides a kind of network reselection method, referring to Fig. 5, comprises the steps:
S41, the CS territory is preferential resident to the 2G network carries out CS territory business; The PS territory is preferential resident to 3G network, carry out PS territory business;
S42, detect the 3G network signal strength signal intensity, when detecting the 3G network signal strength signal intensity and be not higher than first thresholding and the lasting very first time, judge whether the 2G network satisfies the resident condition in PS territory, if, the PS territory is resident to the 2G network, in 2G network execution PS territory business.
In the embodiment of the invention, resident when the 2G network when the PS territory, can also comprise the steps:
When the 3G network signal strength signal intensity that obtains by detection is not less than second thresholding of setting and continued for second time, the PS territory is resident to 3G network, carry out PS territory business at 3G network.
The embodiment of the invention also comprises:
Detect the 2G network signal intensity;
When detecting the 2G network signal intensity and not being higher than the 3rd thresholding and continuing for the 3rd time, judge whether 3G network satisfies the resident condition in CS territory, if, the CS territory is resident to 3G network, in 3G network execution CS territory business.
In the embodiment of the invention, resident when the 3G network when the CS territory, also comprise:
When detecting the 2G network signal intensity and be not less than the 4th thresholding and continued for the 4th time, the CS territory is resident to the 2G network, carry out CS territory business at the 2G network.
Wherein, one or more can the acquisition by local configuration in above-mentioned each thresholding perhaps issues acquisition by network.
In the embodiment of the invention, judge whether the 2G network satisfies the resident condition in PS territory and comprise:
Judge whether the CS territory resides in the 2G network, if, judge that then the 2G network satisfies the resident condition in PS territory, otherwise, judge that the 2G network does not satisfy the resident condition in PS territory; Perhaps,
Whether judge the 2G network signal intensity greater than the 5th thresholding, if, judge that then the 2G network satisfies the resident condition in PS territory, otherwise, judge that the 2G network does not satisfy the resident condition in PS territory;
Judge whether 3G network satisfies the CS territory and comprise:
Judge whether the PS territory resides in 3G network, if, judge that then 3G network satisfies the resident condition in CS territory, otherwise, judge that 3G network does not satisfy the resident condition in CS territory; Perhaps,
Whether judge the 3G network signal strength signal intensity greater than the 6th thresholding, if, judge that then 3G network satisfies the resident condition in CS territory, otherwise, judge that 3G network does not satisfy the resident condition in CS territory.
Simultaneously, the value of configuration first thresholding is suitable value in the embodiment of the invention, makes terminal reside in 3G network as far as possible, avoids causing when too big frequent gravity treatment simultaneously, hour is causing very much PS territory call completion rate to reduce.
In the embodiment of the invention, when described PS territory is positioned at 3G network and is in business state, when radio link failure takes place, carry out cell update, if upgrade unsuccessful, then that the PS territory is resident to the GSM network.
Judge whether when simultaneously, the PS territory is positioned at 3G network and is in business state that the resident threshold value of using during to the 2G network judges whether the resident threshold value of using during to the 2G network when being positioned at 3G network and handling Idle state less than the PS territory.
Said method can be realized based on the module among the embodiment one, two, three, perhaps uses similar module architectures to realize.Relevant explanation of nouns and the concrete flow process of carrying out can not repeat them here referring to illustrating in the foregoing description yet.
By the embodiment of the invention, the CS territory is preferentially resided in the 2G network, the PS territory is preferentially resided in 3G network, can guarantee also can preferentially enjoy 3G network PS territory business at a high speed simultaneously to professional too late comparable more sensitive CS territory quality of service.In addition, the embodiment of the invention also provides based on said method carries out the method that gravity treatment is selected between network, than prior art, reduced search procedure, has shortened the professional unreachable time, has further improved user's experience.
One of ordinary skill in the art will appreciate that all or part of flow process that realizes in the foregoing description method, be to instruct relevant hardware to finish by computer program, described program can be stored in the computer read/write memory medium, this program can comprise the flow process as the embodiment of above-mentioned each side method when carrying out.Wherein, described storage medium can be magnetic disc, CD, read-only storage memory body (Read-Only Memory, ROM) or at random store memory body (Random Access Memory, RAM) etc.
Above-listed preferred embodiment; the purpose, technical solutions and advantages of the present invention are further described; institute is understood that; the above only is preferred embodiment of the present invention; not in order to restriction the present invention; within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (20)
1. a single deck tape-recorder terminal is characterized in that, comprising:
The 2G processing module is used for the preferential resident 2G network that arrives in CS territory is carried out CS territory business;
The 3G processing module is used for the preferential resident 3G network that arrives in PS territory is carried out PS territory business;
Described 3G processing module also is used to detect the 3G network signal strength signal intensity; When described 3G processing module detects the 3G network signal strength signal intensity and is not higher than first thresholding and the lasting very first time, described 2G processing module also is used for, and judges whether the 2G network satisfies the resident condition in PS territory, if, the PS territory is resident to the 2G network, carry out PS territory business at the 2G network.
2. terminal as claimed in claim 1 is characterized in that, resident when the 2G network when the PS territory, described 3G processing module also is used for:
When the 3G network signal strength signal intensity that obtains by detection is not less than second thresholding of setting and continued for second time, the PS territory is resident to 3G network, carry out PS territory business at 3G network.
3. terminal as claimed in claim 1 or 2 is characterized in that:
Described 2G processing module also is used to detect the 2G network signal intensity;
When described 2G processing module detects the 2G network signal intensity and is not higher than the 3rd thresholding and continued for the 3rd time, described 3G processing module also is used for, and judges whether 3G network satisfies the resident condition in CS territory, if, the CS territory is resident to 3G network, carry out CS territory business at 3G network.
4. terminal as claimed in claim 3 is characterized in that, resident when the 3G network when the CS territory, described 2G module also is used for:
When detecting the 2G network signal intensity and be not less than the 4th thresholding of setting and continued for the 4th time, the CS territory is resident to the 2G network, carry out CS territory business at the 2G network.
5. terminal as claimed in claim 4 is characterized in that:
Described first thresholding, described second thresholding, described the 3rd thresholding, described the 3rd thresholding, the described very first time, described the second, described the 3rd time, one or more in described the 4th time obtain by local configuration, perhaps issue acquisition by network.
6. terminal as claimed in claim 3 is characterized in that:
Described 2G processing module is used for specifically judging as follows whether the 2G network satisfies the resident condition in PS territory:
Judge whether the CS territory resides in the 2G network, if, judge that then the 2G network satisfies the resident condition in PS territory, otherwise, judge that the 2G network does not satisfy the resident condition in PS territory; Perhaps,
Whether judge the 2G network signal intensity greater than the 5th thresholding, if, judge that then the 2G network satisfies the resident condition in PS territory, otherwise, judge that the 2G network does not satisfy the resident condition in PS territory;
Described 3G processing module is used for specifically judging as follows whether 3G network satisfies the resident condition in CS territory:
Judge whether the PS territory resides in 3G network, if, judge that then 3G network satisfies the resident condition in CS territory, otherwise, judge that 3G network does not satisfy the resident condition in CS territory; Perhaps,
Whether judge the 3G network signal strength signal intensity greater than the 6th thresholding, if, judge that then 3G network satisfies the resident condition in CS territory, otherwise, judge that 3G network does not satisfy the resident condition in CS territory.
7. terminal as claimed in claim 1 is characterized in that:
The value that disposes described first thresholding is suitable value, in order to avoid cause frequent gravity treatment when too big, hour is causing PS territory call completion rate to reduce very much; Simultaneously also make terminal reside in 3G network as far as possible.
8. terminal as claimed in claim 1 is characterized in that:
Described first thresholding is less than described second thresholding, to avoid causing ping-pong reselection.
9. terminal as claimed in claim 1 is characterized in that:
When described PS territory was positioned at 3G network and is in business state, described 3G processing module also was used for carrying out cell update when radio link failure takes place, if upgrade unsuccessful, then that the PS territory is resident to the 2G network.
10. terminal as claimed in claim 1 is characterized in that:
Described PS territory judges whether when being positioned at 3G network and being in business state that the resident threshold value of using during to the 2G network judges whether the resident threshold value of using during to the 2G network when being positioned at 3G network and being in Idle state less than the PS territory.
11. a network reselection method is characterized in that, comprises the steps:
The CS territory is preferential resident to the 2G network, carry out CS territory business;
The PS territory is preferential resident to 3G network, carry out PS territory business;
Detect the 3G network signal strength signal intensity, when detecting the 3G network signal strength signal intensity and be not higher than first thresholding and the lasting very first time, judge whether the 2G network satisfies the resident condition in PS territory, if, the PS territory is resident to the 2G network, in 2G network execution PS territory business.
12. method as claimed in claim 11 is characterized in that, resident when the 2G network when the PS territory, described method also comprises:
When the 3G network signal strength signal intensity that obtains by detection is not less than second thresholding of setting and continued for second time, the PS territory is resident to 3G network, carry out PS territory business at 3G network.
13. as claim 11 or 12 described methods, it is characterized in that, also comprise:
Detect the 2G network signal intensity;
When detecting the 2G network signal intensity and not being higher than the 3rd thresholding and continuing for the 3rd time, judge whether 3G network satisfies the resident condition in CS territory, if, the CS territory is resident to 3G network, in 3G network execution CS territory business.
14. method as claimed in claim 13 is characterized in that, and is resident when the 3G network when the CS territory, also comprises:
When detecting the 2G network signal intensity and be not less than the 4th thresholding and continued for the 4th time, the CS territory is resident to the 2G network, carry out CS territory business at the 2G network.
15. method as claimed in claim 14 is characterized in that:
Described first thresholding, described second thresholding, described the 3rd thresholding, described the 3rd thresholding, the described very first time, described the second, described the 3rd time, one or more in described the 4th time obtain by local configuration, perhaps issue acquisition by network.
16. method as claimed in claim 13 is characterized in that:
Whether the described 2G of judgement network satisfies the resident condition in PS territory comprises:
Judge whether the CS territory resides in the 2G network, if, judge that then the 2G network satisfies the resident condition in PS territory, otherwise, judge that the 2G network does not satisfy the resident condition in PS territory; Perhaps,
Whether judge the 2G network signal intensity greater than the 5th thresholding, if, judge that then the 2G network satisfies the resident condition in PS territory, otherwise, judge that the 2G network does not satisfy the resident condition in PS territory;
Describedly judge whether 3G network satisfies the CS territory and comprise:
Judge whether the PS territory resides in 3G network, if, judge that then 3G network satisfies the resident condition in CS territory, otherwise, judge that 3G network does not satisfy the resident condition in CS territory; Perhaps,
Whether judge the 3G network signal strength signal intensity greater than the 6th thresholding, if, judge that then 3G network satisfies the resident condition in CS territory, otherwise, judge that 3G network does not satisfy the resident condition in CS territory.
17. method as claimed in claim 11 is characterized in that:
The value that disposes described first thresholding is suitable value, in order to avoid cause frequent gravity treatment when too big, hour is causing PS territory call completion rate to reduce very much; Simultaneously also make terminal reside in 3G network as far as possible.
18. method as claimed in claim 11 is characterized in that:
Described first thresholding causes ping-pong reselection less than described second thresholding to keep away.
19. method as claimed in claim 11 is characterized in that:
When described PS territory is positioned at 3G network and is in business state, when radio link failure takes place, carry out cell update, if upgrade unsuccessful, then that the PS territory is resident to the 2G network.
20. method as claimed in claim 11 is characterized in that:
Described PS territory judges whether when being positioned at 3G network and being in business state that the resident threshold value of using during to the 2G network judges whether the resident threshold value of using during to the 2G network when being positioned at 3G network and handling Idle state less than the PS territory.
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| PCT/CN2011/082067 WO2012075874A1 (en) | 2010-12-09 | 2011-11-11 | Single-card terminal and network reselection method |
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| WO2012075874A1 (en) | 2012-06-14 |
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