CN100558191C - A kind of method of VoIP Traffic Channel switching controls - Google Patents

Abstract

The invention discloses a kind of method of VoIP Traffic Channel switching controls, a kind of method of VoIP Traffic Channel switching controls may further comprise the steps: A, monitoring also obtain the channel quality indicator (CQI) value of VoIP business on the HSDPA channel; Whether B, the professional CQI value of the VoIP that judge to obtain satisfy handover triggering condition, if satisfied, execution in step C then; Otherwise, return steps A; C, the VoIP business is switched to dedicated channel from the HSDPA channel.The method of a kind of VoIP Traffic Channel switching controls provided by the present invention, under the situation that satisfies the channel switching condition, during promptly when the close base station of user or near cell edge, the VoIP business that the user is used switches to the DCH channel from the HSDPA channel, utilize the DCH characteristic of channel to satisfy the delay requirement of VoIP business, the spectrum efficiency of raising system effectively utilizes system resource.

Description

A kind of method of VoIP Traffic Channel switching controls

Technical field

The present invention relates to voip technology, refer to a kind of method of VoIP Traffic Channel switching controls especially.

Background technology

Because traditional voice transmission convenient, voice service will be a business of main and the heavy maximum of the accounting third generation (3G) mobile communication system in the following a very long time.One of evolution trend of 3G system is that network all-IP (Internet Protocol) is changed, and VoIP (Voice over IP) business is exactly a transmission technology that realizes Speech Communication based on the IP packet switching network.At universal mobile telecommunications system (UMTS, Universal Mobile Telecommunication System) can use dedicated channel (DCH in, Dedicated Channel) or high speed downlink packet insert (HSDPA, High SpeedDownlink Packet Access) channel and support the VoIP business.

When supporting that by the HSDPA channel VoIP is professional, based on the sharing characteristic of HSDPA channel, can be by sharing the spectrum efficiency that is used for improving whole system that makes of sign indicating number resource and power resource and high-order modulating.But along with using the VoIP service-user when move the base station, under the situation that the residing channel condition of this user is become better and better, the HSDPA channel phenomenon that spectrum efficiency reduces then will certainly occur if will guarantee the delay requirement of VoIP business at this moment; And as the user who uses the VoIP business during gradually near cell edge, abominable gradually because of channel condition, the HSDPA channel also can show the phenomenon that spectrum efficiency reduces or can't guarantee the VoIP service delay gradually.

Reduce and can't guarantee under the situation of VoIP service delay when the HSDPA channel table reveals spectrum efficiency, support the VoIP business by the DCH channel, then can satisfy the delay requirement of VoIP business, guarantee the spectrum efficiency of channel if change.But, do not provide any scheme that the VoIP business can be switched at HSDPA channel and DCH interchannel in the prior art, that is to say, behind the VoIP service access HSDPA channel that the user uses, even because the user need strengthen transmitting power near the base station or near cell edge, current VoIP business can not switched on the DCH channel from the HSDPA channel yet, cause the time delay of reduction of HSDPA channel spectrum efficient and VoIP business to guarantee.

Summary of the invention

In view of this, main purpose of the present invention is to provide a kind of method of VoIP Traffic Channel switching controls, the switching of control VoIP business from the HSDPA channel to the DCH channel, thereby the spectrum efficiency of raising whole system, the time delay of guarantee VoIP business.

For achieving the above object, technical scheme of the present invention is achieved in that

A kind of method of VoIP Traffic Channel switching controls, for the VoIP business setting HSDPA channel of current access high-speed downlink packet access HSDPA channel to dedicated channel HD channel switching timer, and maximum channel quality indicator (CQI) thresholding; This method is further comprising the steps of:

A, monitoring also obtain the CQI value of VoIP business on the HSDPA channel;

Whether B, the professional CQI value of the VoIP that judge to obtain more than or equal to maximum CQI thresholding, if, execution in step BC1 then; Otherwise, return steps A;

BC1, judge whether HD channel switching timer starts, if, execution in step BC2 then; Otherwise, after the startup HD channel switching timer, return steps A;

BC2, judge whether HD channel switching timer is overtime, if, execution in step C then; Otherwise, return steps A;

C, the VoIP business is switched to dedicated channel from the HSDPA channel.

In addition, minimum CQI thresholding is set further, the described HD of setting channel switching timer is: HD is set ₁Channel switching timer and HD ₂The channel switching timer;

Among the step B, judge that obtain the professional CQI value of VoIP is not during more than or equal to maximum CQI thresholding, step B further comprises afterwards:

Whether the professional CQI value of the VoIP that b11, judgement obtain is less than or equal to minimum CQI thresholding, if HD resets ₁After the channel switching timer, execution in step b12; Otherwise HD resets ₁Channel switching timer and HD ₂After the channel switching timer, return steps A;

B12, judgement HD ₂Whether the channel switching timer starts, if, execution in step b13 then; Otherwise, start HD ₂After the channel switching timer, return steps A;

B13, judgement HD ₂Whether the channel switching timer is overtime, if, execution in step C then; Otherwise, return steps A;

Among the step B, judge that further comprise between step B and the step BC1: HD resets when obtaining the professional CQI value of VoIP more than or equal to maximum CQI thresholding ₂The channel switching timer; HD channel switching timer is described in step BC1 and the step BC2: HD ₁The channel switching timer.

In addition, minimum CQI thresholding is set further, among the step B, judges that obtaining the professional CQI value of VoIP is not more than or equal to after the maximum CQI thresholding, further comprises:

Whether b21, the professional CQI value of the VoIP that judge to obtain are less than or equal to minimum CQI thresholding, if, execution in step BC1 then; Otherwise the HD channel switching timer that resets is returned steps A.

In addition, minimum CQI thresholding further is set; The described HD of setting channel switching timer is: HD is set ₁Channel switching timer and HD ₂The channel switching timer;

It is not during more than or equal to maximum CQI thresholding that step B obtains the professional CQI value of VoIP in judgement, and step B further comprises afterwards:

Whether the professional CQI value of the VoIP that b31, judgement obtain is less than or equal to minimum CQI thresholding, if HD resets ₁After the channel switching timer, execution in step b32; Otherwise HD resets ₁Channel switching timer and HD ₂After the channel switching timer, return steps A;

B32, judgement HD ₂Whether the channel switching timer starts, if, execution in step b33 then; Otherwise, start HD ₂After the channel switching timer, return steps A;

B33, judgement HD ₂Whether the channel switching timer is overtime, if, execution in step C then; Otherwise, return steps A;

Among the step B, judge that further comprise between step B and the step BC1: HD resets when obtaining the professional CQI value of VoIP more than or equal to maximum CQI thresholding ₂The channel switching timer; HD channel switching timer is described in step BC1 and the step BC2: HD ₁The channel switching timer.

In addition, minimum CQI thresholding is set further, among the step B, judges that obtaining the professional CQI value of VoIP is not more than or equal to after the maximum CQI thresholding, further comprises:

Whether b41, the professional CQI value of the VoIP that judge to obtain are less than or equal to minimum CQI thresholding, if, execution in step BC1 then; Otherwise the HD channel switching timer that resets is returned steps A.

In addition, further comprise after the step BC2: bc21, judge whether dedicated channel allows the VoIP service access, if permission, then execution in step C; Otherwise, return steps A.

In addition, the professional life-span cumulative distribution function curve of VoIP and the professional life-span thresholding of VoIP of the professional traffic model of current VoIP is set, after the step BC2, further comprises:

Bc22, the professional current duration of call of acquisition VoIP, on the professional life-span cumulative distribution function curve of VoIP, find the professional life-span cumulative distribution function value of corresponding VoIP according to the duration of call, judge whether the professional life-span cumulative distribution function value of VoIP is less than or equal to the professional life-span thresholding of VoIP, if, execution in step C then; Otherwise, return steps A.

In addition, in step bc22, the professional life-span cumulative distribution function value of judgement VoIP further comprises after being less than or equal to the professional life-span thresholding of VoIP:

Judge whether dedicated channel allows the VoIP service access, if permission, then execution in step C; Otherwise, return steps A.

The method of a kind of VoIP Traffic Channel switching controls provided by the present invention, under the situation that satisfies the channel switching condition, during promptly when the close base station of user or near cell edge, the VoIP business that the user is used switches to the DCH channel from the HSDPA channel, utilize the DCH characteristic of channel to satisfy the delay requirement of VoIP business, the spectrum efficiency of raising system effectively utilizes system resource.In addition, the present invention is before switching to the DCH channel with the VoIP business from the HSDPA channel, also further consider the situation the when user uses VoIP professional, be whether user's duration of satisfying the channel switching condition, user's conversation closes to an end and the resource situation of DCH channel, thereby further increase the channel handover success rate, reduce unnecessary channel and switch, conserve system resources improves spectrum efficiency.

Description of drawings

Fig. 1 is the flow chart of the embodiment of the invention one;

Fig. 2 is the flow chart of the embodiment of the invention two;

Fig. 3 is the flow chart of the embodiment of the invention three;

Fig. 4 is the flow chart of the embodiment of the invention four;

Fig. 5 is the flow chart of the embodiment of the invention five;

Fig. 6 is the flow chart of the embodiment of the invention six.

Embodiment

The VoIP business that the present invention only uses at the user is access in the situation at the HSDPA channel at first.

Core concept of the present invention is: behind the VoIP service access HSDPA channel that the user uses, the user who uses this VoIP business is gradually near base station or cell edge, and when keeping a period of time, network side then switches to the DCH channel with this VoIP business from the HSDPA channel.

In the present invention, utilize the size of channel quality indication (CQI) value to judge that whether the user is near base station or cell edge.Be specially: maximum CQI thresholding CQI is set _MaxThWith minimum CQI thresholding CQI _MinTh, when the CQI value of using the VoIP service-user more than or equal to maximum CQI thresholding, the close base station of user then; When the CQI value of using the VoIP service-user is less than or equal to minimum CQI thresholding, the close cell edge of user then.Wherein, the purpose that maximum CQI thresholding and minimum CQI threshold value are set is: according to the maximum CQI thresholding that is provided with or minimum CQI threshold value carry out switch from the HSDPA channel to the DCH channel after, make the spectrum efficiency of system maximize, the therefore concrete size that is provided with can obtain according to different districts environment and system business model emulation.

When the VoIP business satisfies above-mentioned channel switching condition, it is also conceivable that simultaneously and use this VoIP service-user other factors in network, further control the VoIP business and switch to the DCH channel from the HSDPA channel.These factors comprise following 2 points:

The first, the CQI value of the VoIP business of using as the user is more than or equal to maximum CQI thresholding or after being less than or equal to minimum CQI thresholding and keeping a period of time, preferable, it is also conceivable that whether the VoIP business that this user uses closes to an end, if close to an end, then preferably the VoIP business that this user uses is retained on the HSDPA channel this moment, this is because the VoIP business that closes to an end can not cause too much influence to system again, therefore should not carry out the switching from the HSDPA channel to the DCH channel; If the VoIP business is not to close to an end, then can not consider the influence that this factor is switched channel.

The second, prepare before channel switches when VoIP is professional, preferable, can prejudge whether the DCH channel of this moment has enough resources, if enough resources are arranged, then carry out channel and switch; If no, then do not carry out channel and switch, this is because under the situation of DCH channel resource deficiency, and the VoIP business is switched on the DCH channel, can increase the burden of system on the contrary, and the spectrum efficiency of system is descended.

Take all factors into consideration above factor, gradually near the situation of base station, method of the present invention is described in more detail by four preferred embodiments at the user who uses the VoIP business.

Embodiment one described situation is, the CQI value of the VoIP business of using as the user is more than or equal to maximum CQI thresholding and after keeping a period of time, the switching of execution from the HSDPA channel to the DCH channel.Embodiment two described situations are, whether the CQI value of the VoIP business of using as the user is more than or equal to maximum CQI thresholding and after keeping a period of time, allow to insert according to the DCH channel again to determine whether carrying out with the VoIP business switching from the HSDPA channel to the DCH channel.Embodiment three described situations are, the CQI value of the VoIP business of using as the user is more than or equal to maximum CQI thresholding and after keeping a period of time, determines whether carrying out with the VoIP business switching from the HSDPA channel to the DCH channel according to user's judgement of conversing that whether closes to an end again.Embodiment four described situations are, whether the CQI value of the VoIP business of using as the user is more than or equal to maximum CQI thresholding and after keeping a period of time, close to an end according to the user and converse and whether the DCH channel allows to insert and determine whether carrying out with the VoIP business switching from the DCH channel to the HSDPA channel.

In above-mentioned these four preferred embodiments, only the situation of carrying out the channel switching controls at a VoIP service needed is described, use the user ID of this VoIP service-user to be j in this hypothesis, also can represent the VoIP business that user j uses simultaneously with the professional j of VoIP.

Embodiment one:

Fig. 1 is the flow chart of the embodiment of the invention one.Before the flow process of carrying out as shown in Figure 1, need to set in advance maximum CQI thresholding and timer duration τ at network side _HDWork as CQI _j〉=CQI _MaxTh, then think the user j that uses the VoIP business near the base station, otherwise, think that the user j that uses the VoIP business is not also near the base station; Timer duration τ _HDBe be used for weighing the professional j of VoIP CQI value under arrival situation to a certain degree, whether kept a period of time, if T _HD〉=τ _HD, the CQI value that the VoIP business that user j uses then is described has arrived to a certain degree and has kept a period of time, be presented as timer expiry, otherwise timer is not overtime.Wherein, T _HDBe timer time, whether overtime expression pick up counting the current timer a period of time of judging from timer; Timer duration τ _HDCan be that guideline is provided with the influence of eliminating the fluctuation of CQI measured value.The idiographic flow of embodiment one is as follows:

Step 101: when user j uses VoIP professional, the VoIP service access HSDPA channel that network side uses user j, and HD channel switching timer is set at the professional j of VoIP.

Step 102: the CQI value of the CQI value monitoring VoIP business j of the professional j of the VoIP that network side regularly reports by base station node B, when network side is received the CQI value that NodeB reports, execution in step 103.

Step 103: judge that whether the current CQI value that reports is more than or equal to maximum CQI thresholding, if then execution in step 105; Otherwise, execution in step 104.

Step 104: the HD channel switching timer that resets and be provided with at the professional j of VoIP, and return step 102, the wait NodeB CQI value of the professional j of VoIP next time reports.Wherein, even the HD channel switching timer that is provided with at the professional j of VoIP is not activated,, also carry out the operation of the DH channel switching timer that resets for the unification of flow process.

Step 105: judge whether the HD channel switching timer at the professional j of VoIP starts, if start then execution in step 107; Otherwise, execution in step 106.

Step 106: start the HD channel switching timer that is provided with at the professional j of VoIP, timer picks up counting.Then, return step 102 and wait for NodeB the reporting of CQI value of the professional j of VoIP next time.

Step 107: judge whether HD channel timer is overtime, if T _HD〉=τ _HD, the HD channel timer expiry of the professional j of VoIP then, execution in step 108; Otherwise, return step 102 and wait for NodeB the reporting of CQI value of the professional j of VoIP next time.T wherein _HDBe timer time, whether overtime expression pick up counting the current timer a period of time of judging from timer.

Step 108: network side switches to the DCH channel with the professional j of VoIP from the HSDPA channel.

So far, the flow process of the embodiment of the invention one finishes.

Embodiment two:

Fig. 2 is the flow chart of the embodiment of the invention two.Before the flow process of carrying out as shown in Figure 2, must with embodiment one identical maximum CQI thresholding and the timer duration τ of setting in advance _HD, detailed process is as follows:

Step 201～207: identical with the described method in step 101～107 among the embodiment one, be not described in detail in this.

Step 208: network side judges whether current DCH channel allows the professional j of VoIP to insert, if allow, then execution in step 209; Otherwise, return step 202 and wait for NodeB reporting of CQI value next time.Wherein, allow access to be also referred to as access.

Concrete judge the DCH channel whether the principle of access can be: can support that according to the DCH channel gross power of the summation of number, DCH channel available horsepower of VoIP business and power ramp is definite.The described DCH of the judgement channel whether principle of access is equally applicable to other embodiment among the present invention.

Step 209: network side switches to the DCH channel with the professional j of VoIP from the HSDPA channel.

So far, the flow process of the embodiment of the invention two finishes.

Embodiment three:

Fig. 3 is the flow chart of the embodiment of the invention three.Before the flow process of carrying out as shown in Figure 3, except needs set in advance maximum CQI thresholding and timer duration τ _HD, also need to determine cumulative distribution function (CDF, the Cumulative Distribution Function) curve of the professional traffic model of VoIP, and the professional life-span thresholding CDF of VoIP be set _ThThe professional life-span thresholding CDF of VoIP _ThBe that network side is used for weighing whether close to an end this VoIP business of user j, if CDF _j〉=CDF _Th, then think the user j VoIP business that closes to an end, otherwise, think the user j VoIP business that do not close to an end.Wherein, CDF _jBe duration of call T _HSDPAValue on the professional life-span CDF curve of VoIP, duration of call T _HSDPAThen whether close to an end a period of time between the VoIP business to the current user of judgement j for insert the HSDPA channel as the professional j of VoIP.The professional life-span CDF curve of VoIP is to determine according to concrete traffic model, and concrete traffic model then needs to determine according to the concrete condition of network.The professional life-span thresholding CDF of VoIP _ThThen can be provided with according to analysis-by-synthesis to concrete traffic model.The idiographic flow of embodiment three is as follows:

Step 301～307: with the difference of step 101 among the embodiment one～107 described methods at son, in step 301, when VoIP service access HSDPA channel that network side uses user j, just begin to add up the duration of call T of user j _HSDPA, the described step in step 101～107 is identical with method among other step and method and the embodiment one, is not described in detail in this.

Step 308～309: the duration of call T current according to user j _HSDPA, on the professional life-span CDF curve of VoIP, search and obtain corresponding C DF value CDF _jAccording to searching the CDF that obtains _j, judge whether CDF _j≤ CDF _Th, if then execution in step 310; Otherwise, return step 302 and wait for NodeB the reporting of CQI value of the professional j of VoIP next time.

Step 310: network side switches to the DCH channel with the professional j of VoIP from the HSDPA channel.

So far, the flow process of the embodiment of the invention three finishes.

Embodiment four:

Fig. 4 is the flow chart of the embodiment of the invention four.Before the flow process of carrying out as shown in Figure 4, except needs set in advance maximum CQI thresholding and timer duration τ _HD, also need to determine the professional traffic model CDF of VoIP curve, the professional life-span thresholding CDF of VoIP is set _ThTimer duration τ _HDWith the professional life-span thresholding CDF of VoIP _ThMeaning and the concrete grammar of setting with to implement meaning and the method described in, two and three identical, be not described in detail in this.The idiographic flow of embodiment four is as follows:

Step 401～409: identical with the described method in step 301～309 among the embodiment three, be not described in detail in this.

Step 410: network side judges whether current DCH channel allows the professional j of VoIP to insert, if allow, then execution in step 411; Otherwise, return step 402 and wait for NodeB reporting of CQI value next time.

Step 411: network side switches to the DCH channel with the professional j of VoIP from the HSDPA channel.

So far, the flow process of the embodiment of the invention four finishes.

The user that flow process shown in the embodiment one, two, three and four is adapted to use the VoIP business equally is gradually near the situation of cell edge, step 403 among step 303 and the embodiment four among step 203, the embodiment three among step 103, the embodiment two in embodiment one just will judge that whether the CQI value that obtains changes the CQI value of judging acquisition into more than or equal to maximum CQI thresholding and whether be less than or equal to minimum CQI thresholding and get final product.Wherein, it is identical with the principle described in the embodiment one principle of timer duration to be set.In the present invention, claim the CQI value to be: to satisfy handover triggering condition more than or equal to the situation that maximum CQI thresholding or CQI value are less than or equal to minimum CQI thresholding.

At the user who uses the VoIP business gradually near the base station or gradually near the simultaneous situation of cell edge, below again by two preferred embodiment: embodiment five and embodiment six, method of the present invention is described in more detail.Embodiment five is with the main distinction of embodiment six: embodiment five gradually near the base station or gradually near these two kinds of different situations of cell edge, is provided with different HD channel switching timer respectively, HD at the user ₁The channel switching timer is the HD channel switching timer that is provided with near the base station gradually at the user, HD ₂The channel switching timer is the HD channel switching timer that is provided with near cell edge gradually at the user; Six of embodiment gradually near the base station or gradually near these two kinds of different situations of cell edge, are provided with identical HD channel switching timer at the user.

Embodiment five and embodiment six equally only are described at the situation that a VoIP business is carried out the channel switching controls, use the user ID of this VoIP service-user to be j in this hypothesis, then represent the VoIP business that user j uses with the professional j of VoIP.

Embodiment five:

The detailed process of embodiment five is as shown in Figure 5:

Step 501～502: be with the difference of step 101 among the embodiment one～102 described methods, in step 501, when VoIP service access HSDPA channel that network side uses user j, then begin to add up the duration of call T of user j _HSDPA, the described step in step 101～102 is identical with method among other step and method and the embodiment one, is not described in detail in this.

Step 503: whether judge the current CQI value that reports more than or equal to maximum CQI thresholding, if not, then execution in step 504; Otherwise, execution in step 510.

Step 504: judge whether the current CQI value that reports is less than or equal to minimum CQI thresholding, if not, then execution in step 505; Otherwise, execution in step 506.

Step 505: reset at the HD of the professional j of VoIP near the situation setting of base station ₁The channel switching timer, and at the HD of the professional j of VoIP near the situation setting of cell edge ₂The channel switching timer, and return step 502, the wait NodeB CQI value of the professional j of VoIP next time reports.

Wherein, even the HD that is provided with at the professional j of VoIP ₁Channel switching timer and HD ₂The channel switching timer is not activated, and for the unification of flow process, also carries out the HD that resets ₁Channel switching timer and HD ₂The operation of channel switching timer.

Step 506: the HD that resets and be provided with near the base station at the professional j of VoIP ₁The channel switching timer.

Step 507: judge the HD that is provided with near cell edge at the professional j of VoIP ₂Whether the channel switching timer starts, if start then execution in step 509; Otherwise, execution in step 508.

Step 508: start the HD that is provided with near the sub-district at the professional j of VoIP ₂The channel switching timer, timer picks up counting.Then, return step 502 and wait for NodeB the reporting of CQI value of the professional j of VoIP next time.

Step 509: judge HD ₂Whether the channel timer is overtime, if $T_{\mathrm{HD}}\≥{\mathrm{\τ}}_{{\mathrm{HD}}_2},$ The HD of the professional j of VoIP then ₂The channel timer expiry, execution in step 514; Otherwise, return step 502 and wait for NodeB the reporting of CQI value of the professional j of VoIP next time.T wherein _HDBe timer time, whether overtime expression pick up counting the current timer a period of time of judging from timer.

Step 510: the HD that resets and be provided with near cell edge at the professional j of VoIP ₂The channel switching timer.

Step 511: judge the HD that is provided with near the base station at the professional j of VoIP ₁Whether the channel switching timer starts, if start then execution in step 513; Otherwise, execution in step 512.

Step 512: start the HD that is provided with near the base station at the professional j of VoIP ₁The channel switching timer, timer picks up counting.Then, return step 502 and wait for NodeB the reporting of CQI value of the professional j of VoIP next time.

Step 513: judge HD ₁Whether the channel timer is overtime, if $T_{\mathrm{HD}}\≥{\mathrm{\τ}}_{{\mathrm{HD}}_1},$ The HD of the professional j of VoIP then ₁The channel timer expiry, execution in step 514; Otherwise, return step 502 and wait for NodeB the reporting of CQI value of the professional j of VoIP next time.T wherein _HDBe timer time, whether overtime expression pick up counting the current timer a period of time of judging from timer.

Here,

With

Introduce among concrete setting principle and the embodiment one identical, for

With

Identical value can be set, also different values can be set.

Step 514～515: the duration of call T current according to user j _HSDPA, on the professional life-span CDF curve of VoIP, search and obtain corresponding C DF value CDF _jAccording to searching the CDF that obtains _j, judge whether CDF _j≤ CDF _Th, if then execution in step 516; Otherwise, return step 502 and wait for NodeB the reporting of CQI value of the professional j of VoIP next time.

Step 516: network side judges whether current DCH channel allows the professional j of VoIP to insert, if allow, then execution in step 517; Otherwise, return step 502 and wait for NodeB reporting of CQI value next time.

Step 517: network side switches to the DCH channel with the professional j of VoIP from the HSDPA channel.

So far, the flow process of the embodiment of the invention five finishes.

In embodiments of the invention five, step 512～513 and step 514 are optional step, can distinguish not execution in step 512～513 or step 514 or step 512～514 in concrete implementation.In embodiment five, can also carry out earlier the user whether near the judgement of cell edge, carry out the user more whether near the judgement of base station; Judge earlier promptly whether the CQI value that obtains is less than or equal to minimum CQI thresholding, whether judge the CQI value that obtains again more than or equal to maximum CQI thresholding, other process is constant.

Embodiment six:

Embodiment six detailed processes are as shown in Figure 6:

Step 601～602: identical with the described method in step 501～502 among the embodiment one, be not described in detail in this.

Step 603: whether judge the current CQI value that reports more than or equal to maximum CQI thresholding, if not, then execution in step 604; Otherwise, execution in step 606.

Step 604: judge whether the current CQI value that reports is less than or equal to minimum CQI thresholding, if not, then execution in step 605; Otherwise, execution in step 606.

Step 605: the HD channel switching timer that resets and be provided with at the professional j of VoIP, and return step 602, the wait NodeB CQI value of the professional j of VoIP next time reports.

Step 606: judge whether the HD channel switching timer that is provided with at the professional j of VoIP starts, if start then execution in step 608; Otherwise, execution in step 607.

Step 607: start the HD channel switching timer that is provided with at the professional j of VoIP, timer picks up counting.Then, return step 602 and wait for NodeB the reporting of CQI value of the professional j of VoIP next time.

Step 608: judge whether HD channel timer is overtime, if T _HD〉=τ _HD, the HD channel timer expiry of the professional j of VoIP then, execution in step 609; Otherwise, return step 602 and wait for NodeB the reporting of CQI value of the professional j of VoIP next time.T wherein _HDBe timer time, whether overtime expression pick up counting the current timer a period of time of judging from timer.

Here, τ _HDSetting principle and embodiment one in introduce identically, be not described in detail in this.

Step 609～610: the duration of call T current according to user j _HSDPA, on the professional life-span CDF curve of VoIP, search and obtain corresponding C DF value CDF _jAccording to searching the CDF that obtains _j, judge whether CDF _j≤ CDF _Th, if then execution in step 611; Otherwise, return step 602 and wait for NodeB the reporting of CQI value of the professional j of VoIP next time.

Step 611: network side judges whether current DCH channel allows the professional j of VoIP to insert, if allow, then execution in step 612; Otherwise, return step 602 and wait for NodeB reporting of CQI value next time.

Step 612: network side switches to the DCH channel with the professional j of VoIP from the HSDPA channel.

So far, the flow process of the embodiment of the invention six finishes.

In embodiments of the invention six, step 609～610 and step 611 are optional step, can distinguish not execution in step 609～610 or step 611 or step 609～611 in concrete implementation.In embodiment six, can also carry out earlier the user whether near the judgement of cell edge, carry out the user more whether near the judgement of base station; Judge earlier promptly whether the CQI value that obtains is less than or equal to minimum CQI thresholding, whether judge the CQI value that obtains again more than or equal to maximum CQI thresholding, other process is constant.

The above is preferred embodiment of the present invention only, is not to be used to limit protection scope of the present invention.

Claims (8)

1, a kind of method of VoIP Traffic Channel switching controls is characterized in that, for the VoIP business setting HSDPA channel of current access high-speed downlink packet access HSDPA channel to dedicated channel HD channel switching timer, and maximum channel quality indicator (CQI) thresholding; This method is further comprising the steps of:

A, monitoring also obtain the CQI value of VoIP business on the HSDPA channel;

Whether B, the professional CQI value of the VoIP that judge to obtain more than or equal to maximum CQI thresholding, if, execution in step BC1 then; Otherwise, return steps A;

BC1, judge whether HD channel switching timer starts, if, execution in step BC2 then; Otherwise, after the startup HD channel switching timer, return steps A;

BC2, judge whether HD channel switching timer is overtime, if, execution in step C then; Otherwise, return steps A;

C, the VoIP business is switched to dedicated channel from the HSDPA channel.

2, method according to claim 1 is characterized in that, minimum CQI thresholding further is set, and the described HD of setting channel switching timer is: HD is set ₁Channel switching timer and HD ₂The channel switching timer;

Among the step B, judge that obtain the professional CQI value of VoIP is not during more than or equal to maximum CQI thresholding, step B further comprises afterwards:

Whether the professional CQI value of the VoIP that b11, judgement obtain is less than or equal to minimum CQI thresholding, if HD resets ₁After the channel switching timer, execution in step b12; Otherwise HD resets ₁Channel switching timer and HD ₂After the channel switching timer, return steps A;

B12, judgement HD ₂Whether the channel switching timer starts, if, execution in step b13 then; Otherwise, start HD ₂After the channel switching timer, return steps A;

B13, judgement HD ₂Whether the channel switching timer is overtime, if, execution in step C then; Otherwise, return steps A;

Among the step B, judge that further comprise between step B and the step BC1: HD resets when obtaining the professional CQI value of VoIP more than or equal to maximum CQI thresholding ₂The channel switching timer; HD channel switching timer is described in step BC1 and the step BC2: HD ₁The channel switching timer.

3, method according to claim 1 is characterized in that, minimum CQI thresholding further is set, and among the step B, judges that obtaining the professional CQI value of VoIP is not more than or equal to after the maximum CQI thresholding, further comprises:

Whether b21, the professional CQI value of the VoIP that judge to obtain are less than or equal to minimum CQI thresholding, if, execution in step BC1 then; Otherwise the HD channel switching timer that resets is returned steps A.

4, method according to claim 1 is characterized in that, minimum CQI thresholding further is set; The described HD of setting channel switching timer is: HD is set ₁Channel switching timer and HD ₂The channel switching timer;

It is not during more than or equal to maximum CQI thresholding that step B obtains the professional CQI value of VoIP in judgement, and step B further comprises afterwards:

Whether the professional CQI value of the VoIP that b31, judgement obtain is less than or equal to minimum CQI thresholding, if HD resets ₁After the channel switching timer, execution in step b32; Otherwise HD resets ₁Channel switching timer and HD ₂After the channel switching timer, return steps A;

B32, judgement HD ₂Whether the channel switching timer starts, if, execution in step b33 then; Otherwise, start HD ₂After the channel switching timer, return steps A;

B33, judgement HD ₂Whether the channel switching timer is overtime, if, execution in step C then; Otherwise, return steps A;

Among the step B, judge that further comprise between step B and the step BC1: HD resets when obtaining the professional CQI value of VoIP more than or equal to maximum CQI thresholding ₂The channel switching timer; HD channel switching timer is described in step BC1 and the step BC2: HD ₁The channel switching timer.

5, method according to claim 1 is characterized in that, minimum CQI thresholding further is set, and among the step B, judges that obtaining the professional CQI value of VoIP is not more than or equal to after the maximum CQI thresholding, further comprises:

Whether b41, the professional CQI value of the VoIP that judge to obtain are less than or equal to minimum CQI thresholding, if, execution in step BC1 then; Otherwise the HD channel switching timer that resets is returned steps A.

6, according to the described method of each claim of claim 1 to 5, it is characterized in that, further comprise after the step BC2:

Bc21, judge whether dedicated channel allows the VoIP service access, if allow, execution in step C then; Otherwise, return steps A.

7, according to the described method of each claim of claim 1 to 5, it is characterized in that, the professional life-span cumulative distribution function curve of VoIP and the professional life-span thresholding of VoIP of the professional traffic model of current VoIP be set, after the step BC2, further comprise:

Bc22, the professional current duration of call of acquisition VoIP, on the professional life-span cumulative distribution function curve of VoIP, find the professional life-span cumulative distribution function value of corresponding VoIP according to the duration of call, judge whether the professional life-span cumulative distribution function value of VoIP is less than or equal to the professional life-span thresholding of VoIP, if, execution in step C then; Otherwise, return steps A.

8, method according to claim 7 is characterized in that, in step bc22, the professional life-span cumulative distribution function value of judgement VoIP further comprises after being less than or equal to the professional life-span thresholding of VoIP:

Judge whether dedicated channel allows the VoIP service access, if permission, then execution in step C; Otherwise, return steps A.

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