CN102883389B - Connection switching method under service connection state of multimode multi-standby handheld mobile terminal - Google Patents

Abstract

The invention discloses a connection switching method of a multimode multi-standby handheld mobile terminal in a service connection state, which mainly solves the problems that a network switching method in the prior art lacks a judgment method for starting a new connection establishment flow in advance, so that user service interruption is caused during connection switching, and user experience and network service quality are seriously influenced. The connection switching method under the service connection state of the multimode multi-standby handheld mobile terminal comprises the following steps: the service connection state switching device acquires the current RAT of the mobile terminal and the signal to noise ratio of other base stations which can be detected by the current RAT of the mobile terminal, calculates and determines whether to start a new RAT connection establishment flow, and performs corresponding connection operation if the new RAT connection establishment flow needs to be started. Through the scheme, the method and the device achieve the purpose of improving the user experience and the network service quality, and have high practical value and popularization value.

Description

Connection switching method under multi-mode and multi-standby hand-held mobile terminal service connected state

Technical field

The present invention relates to the connection switching method under a kind of mobile communications network connection status, specifically, relate to the connection switching method under a kind of multi-mode and multi-standby hand-held mobile terminal service connected state.

Background technology

At present, in multiple wireless mobile communications standard simultaneously for user provides in the mobile communication environment of service, various wireless access technology pattern has the different quality of service characteristics of different base station site density, different overlay area characteristic sum.When multi-mode multi-standby terminal is in a certain RAT service connected state, if terminal leaves this RAT network, then re-establish connection by another pattern.

In actual applications, the network connection switching method of each user terminal is the key factor affecting Consumer's Experience, the method of restarting new RAT connection after the nowadays many employings of each manufacturer terminal former RAT end of service carries out connection switching, such changing method lacks judgment mechanism and the method for the new connection building process of pre-cooling, can not provide at current RAT and restart new RAT connection building process during service customer service can be caused to interrupt, have a strong impact on experience and the network service quality of user.

It can thus be appreciated that in order to improve Consumer's Experience and network service quality, innovation and creation are a kind of just started the connection switching method of new RAT connection building process needed for people before current RAT can not provide service.

Summary of the invention

The object of the present invention is to provide the connection switching method under a kind of multi-mode and multi-standby hand-held mobile terminal service connected state, mainly solve judgment mechanism and method that the method for switching network existed in prior art lacks the new connection building process of pre-cooling, make, carrying out customer service being caused to interrupt when connection switches, to have a strong impact on the problem of Consumer's Experience and network service quality.

To achieve these goals, the technical solution used in the present invention is as follows:

Connection switching method under multi-mode and multi-standby hand-held mobile terminal service connected state, comprises the following steps:

Suppose that mobile terminal supports the network of RAT1 and RAT2 two kinds of patterns, wherein, RAT2 is for covering good network, and RAT1 covers more weak network, mobile terminal set up in RAT1 service connection go forward side by side Serial Communication time:

(1) the current signal quality of the RAT1 serving BS of service that provides is sent to service connected state switching device shifter with the form of signal noise ratio by mobile terminal, and the signal noise ratio that service connected state switching device shifter receives for n-th time is set as S ₀[n];

(2) service connected state switching device shifter calculates the Grad F [n] of current demand signal according to the signal noise ratio received, and determines thresholding adjustment parameter Δ T according to the Grad F [n] of the current demand signal calculated;

(3) current threshold value T is calculated ₀, mobile terminal is at S ₀[n]≤T ₀time detect the signal noise ratio { S of RAT1 other serving BS _i(i ≠ 0);

(4) { S is judged _ibe whether empty, when it be empty, when effective RAT1 handover-target base station namely can not be detected, service connected state switching device shifter startup RAT2 module connects flow process.

Specifically, in described step (2), the Grad of current demand signal is determined by following formula: $F\left[n\right]=\frac{1}{N+1}\underset{k=n-N}{\overset{n}{\mathrm{\Σ}}}{S}_0\left[k\right]-S_0[k-1],$ Wherein N is mobile terminal disposal ability constant.

Further, in described step (2), thresholding adjustment parameter Δ T is determined by following formula: $\mathrm{\&Delta;T}=\left\{\begin{array}{cc}-\mathrm{\&alpha;F}\left[n\right],& F\left[n\right]<0\\ 0,& F\left[n\right]\&GreaterEqual;0\end{array}\right.,$ Wherein, α be by current RAT1 cell deployment scene determine be greater than zero constant.

Further, in described step (3), the threshold value that RAT1 is started change detection flow process by us is preset as T _rAT1, threshold value being adjusted optimum configurations is Δ T, then threshold T now ₀=T _rAT1+ Δ T.

In the present invention, described service connected state switching device shifter comprises RAT1 signal quality testing module, be connected by the RAT2 that logic judgment module is connected with this RAT1 signal quality testing module and start Executive Module, and the signal to noise ratio gradient calculator that input is connected with RAT1 signal quality testing module, the adjacent cell detection control module be all connected with signal to noise ratio gradient calculator output and RAT1 signal quality testing module input.

For the ease of using, described RAT1 signal quality testing module is connected startup Executive Module and is all arranged in mobile terminal with RAT2.

Compared with prior art, the present invention has following beneficial effect:

(1) the present invention is combined with changing method by service connected state switching device shifter, before current RAT can not provide service, just start new RAT by making mobile terminal to carry out continuing to connect, multi-mode and multi-standby hand-held mobile terminal business when non-same density covers that effectively achieves uninterruptedly connects switching, current network is being cut off and compared with the connection just carrying out next network after interrupting service with prior art, effectively improve experience and the network service quality of user, there is outstanding substantive distinguishing features and significant progress, meet people's demand.

(2) the invention provides a kind of according to current and test result that is history signal to noise ratio, in conjunction with current scene information, calculate the current mobile terminal be under service connected state and whether should start new RAT connection building process, under the prerequisite guaranteed service quality, decrease the kwh loss that meaningless connection causes to greatest extent, effectively save the energy, be applicable to large-scale promotion application.

(3), in the present invention, RAT1 signal quality testing module is connected startup Executive Module and is all arranged in mobile terminal with RAT2, such set-up mode ensure that the present invention's aesthetic property in actual applications, the demand in realistic application.

Accompanying drawing explanation

Fig. 1 is the system block diagram of service connected state switching device shifter in the present invention.

Embodiment

Below in conjunction with drawings and Examples, the invention will be further described, and embodiments of the present invention include but not limited to the following example.

Embodiment

Connection switching method under multi-mode and multi-standby hand-held mobile terminal service connected state, comprises the following steps:

Mobile terminal of today often supports multiple network pattern, the network coverage in different network's coverage areas between each pattern is variant, it is existing that we suppose that mobile terminal supports the network of RAT1 and RAT2 two kinds of patterns, the network coverage of these two kinds of patterns is variant, but without loss of generality, we suppose that RAT2 covers good network, and RAT1 covers more weak network, mobile terminal set up in RAT1 service connection go forward side by side Serial Communication time:

The current signal quality of the RAT1 serving BS of service that provides is sent to service connected state switching device shifter with the form of signal noise ratio, if the signal noise ratio that n-th time receives is set as S by mobile terminal ₀[n], according to the S obtained ₀[n] just can calculate the Grad F [n] of current demand signal; In the present invention, the Grad of current demand signal is determined by following formula: wherein N constant, is determined by the disposal ability of mobile terminal.

Just thresholding adjustment parameter Δ T can be determined according to the current demand signal Grad F [n] calculated; In the present invention, thresholding adjustment parameter Δ T is determined by following formula: $\mathrm{\&Delta;T}=\left\{\begin{array}{cc}-\mathrm{\&alpha;F}\left[n\right],& F\left[n\right]<0\\ 0,& F\left[n\right]\&GreaterEqual;0\end{array}\right.,$ Wherein, α > 0 is constant, is determined by current RAT cell deployment scene.

According to T ₀=T _rAT1+ Δ T calculates current threshold value T ₀, wherein, T _rAT1for RAT1 starts the threshold value of change detection flow process, Δ T is threshold value adjustment parameter, and mobile terminal is at S ₀[n]≤T ₀time detect the signal noise ratio { S of RAT1 other serving BS _i(i ≠ 0);

If { S _ibe empty, when effective RAT1 handover-target base station namely can not be detected, service connected state switching device shifter starts RAT2 module and to connect flow process.

In order to illustrate the present invention better, we have proposed and a kind of treat hand-held digital mobile terminal according to the signal to noise ratio report value of RAT to the method connecting switching flow and carry out adaptive control so that TD-LTE/TD-SCDMA/GSM (GPRS) multimode is two, TD-SCDMA/GSM (GPRS) is set as RAT2 by us, and TD-LTE is set as RAT1.

Suppose that mobile terminal can access the network of TD-SCDMA/GSM (GPRS) and TD-LTE two kinds of patterns, according to current actual situation of arranging net, TD-SCDMA/GSM (GPRS) pattern is for covering good network, and TD-LTE is for covering general or focus overlay network.

Mobile terminal set up in TD-LTE service connection go forward side by side Serial Communication time implementation method of the present invention comprise the following steps:

Step 101:

The current signal quality of the TD-LTE serving BS of service that provides is reported to service connected state switching device shifter with the form of signal noise ratio, if the signal to noise ratio recorded for n-th time is S by mobile terminal ₀[n];

Step 102:

Utilize the S obtained ₀[n], calculates current Grad:

$F\left[n\right]=\frac{1}{N+1}\underset{k=n-N}{\overset{n}{\mathrm{\&Sigma;}}}{S}_0\left[k\right]-S_0[k-1]$

Wherein N is constant, depending on mobile terminal disposal ability, and according to Grad determine thresholding adjustment parameter Δ T:

$\mathrm{\&Delta;T}=\left\{\begin{array}{cc}-\mathrm{\&alpha;F}\left[n\right],& F\left[n\right]<0\\ 0,& F\left[n\right]\&GreaterEqual;0\end{array}\right.$

Wherein α > 0 is constant, is determined by current TD-LTE cell deployment scene;

Step 103:

Work as S ₀[n]≤T ₀time, mobile terminal starts the signal noise ratio of attempting other serving BS detecting TD-LTE, if this signal to noise ratio is { S _i(i ≠ 0), then current threshold is set to:

T ₀＝T _RAT1+ΔT

Wherein, T _rAT1for TD-LTE starts the pre-determined threshold of change detection flow process, Δ T is adjustment parameter.

Step 104:

If { S _ibe empty, when effective TD-LTE handover-target base station namely can not be detected, then in notification terminal, TD-SCDMA/GSM (GPRS) module starts the flow process that connects.

Just the present invention can be realized well according to above-mentioned flow process.

As shown in Figure 1, in the present invention, described service connected state switching device shifter comprises RAT1 signal quality testing module, be connected by the RAT2 that logic judgment module is connected with this RAT1 signal quality testing module and start Executive Module, and the signal to noise ratio gradient calculator that input is connected with RAT1 signal quality testing module, the adjacent cell detection control module be all connected with signal to noise ratio gradient calculator output and RAT1 signal quality testing module input, wherein said signal to noise ratio gradient calculator is SNR gradient calculator.

For the ease of using, described RAT1 signal quality testing module is connected startup Executive Module and is all arranged in mobile terminal with RAT2.

In the present invention, each hardware module is existing, does not therefore illustrate more at this, and wherein, signal to noise ratio gradient calculator is for performing step 102 and providing step 103 desired parameters; Adjacent cell detection control module is for performing step 103; Logic judgment module is for performing step 104; Adjacent cell detection control module is for sending the instruction carrying out the detection of Current Serving BTS snr value; RAT1 signal quality testing module is for gathering the snr value of Current Serving BTS; Logic judgment module is used for snr value being supplied to RAT2 and connects startup Executive Module, makes its indicating mobile terminal start RAT2 connection building process.

According to above-described embodiment, just the present invention can be realized well.

Claims (3)

1. the connection switching method under multi-mode and multi-standby hand-held mobile terminal service connected state, is characterized in that, comprise the following steps:

Suppose that mobile terminal supports the network of RAT1 and RAT2 two kinds of patterns, wherein, RAT2 is for covering good network, and RAT1 covers more weak network, mobile terminal set up in RAT1 service connection go forward side by side Serial Communication time:

(1) the current signal quality of the RAT1 serving BS of service that provides is sent to service connected state switching device shifter with the form of signal noise ratio by mobile terminal, and the signal noise ratio that service connected state switching device shifter receives for n-th time is set as S ₀[n];

(2) service connected state switching device shifter calculates the Grad F [n] of current demand signal according to the signal noise ratio received, and determines thresholding adjustment parameter Δ T according to the Grad F [n] of the current demand signal calculated;

(3) current threshold value T is calculated ₀, mobile terminal is at S ₀[n]≤T ₀time detect the signal noise ratio { S of RAT1 other serving BS _i(i ≠ 0);

(4) { S is judged _ibe whether empty, when it be empty, when effective RAT1 handover-target base station namely can not be detected, service connected state switching device shifter startup RAT2 module connects flow process;

In described step (2), the Grad of current demand signal is determined by following formula: wherein N is mobile terminal disposal ability constant;

In described step (2), thresholding adjustment parameter Δ T is determined by following formula: $\mathrm{\&Delta;T}=\left\{\begin{array}{cc}-\mathrm{\&alpha;F}\left[n\right],& F\left[n\right]<0\\ 0,& F\left[n\right]\&GreaterEqual;0\end{array}\right.,$ Wherein, α be by current RAT1 cell deployment scene determine be greater than zero constant;

In described step (3), the threshold value that RAT1 is started change detection flow process by us is preset as T _rAT1, threshold value being adjusted optimum configurations is Δ T, then threshold T now ₀=T _rAT1+ Δ T.

2. the connection switching method under multi-mode and multi-standby hand-held mobile terminal service connected state according to claim 1, it is characterized in that, described service connected state switching device shifter comprises RAT1 signal quality testing module, be connected by the RAT2 that logic judgment module is connected with this RAT1 signal quality testing module and start Executive Module, and the signal to noise ratio gradient calculator that input is connected with RAT1 signal quality testing module, the adjacent cell detection control module be all connected with signal to noise ratio gradient calculator output and RAT1 signal quality testing module input.

3. the connection switching method under multi-mode and multi-standby hand-held mobile terminal service connected state according to claim 2, is characterized in that, described RAT1 signal quality testing module is connected startup Executive Module and is all arranged in mobile terminal with RAT2.