CN101197766B - Admission control method and device of high-speed grouping access system - Google Patents

Abstract

The invention discloses an admission control method for a high-speed packet access system which comprises that: a wireless network controller predicts the load increment brought by the bearing service of a non-high-speed shared channel which requests for accessing; the wireless network controller judges if the load state of the system synchronously meets the following conditions: the sum of the load occupied by the current non-high-speed shared channel and the load increment is less than or equal to a preset first admission threshold, the sum of the load occupied by the current non-high-speed shared channel and the load increment as well as the minimum load needed by the service with rate requirement guarantee of the current high-speed shared channel is less than or equal to a preset second admission threshold; if the load state of the system can synchronously meet the conditions, the bearing service of the non-high-speed shared channel which requests for admission is admitted; if the load state of the system can not synchronously meet the conditions, the bearing service of the non-high-speed shared channel which requests for admission is rejected. The method of the invention assures the fairness of the bearing service of the non-high-speed shared channel in the high-speed packet access district and the stability of the system.

Description

A kind of acceptance controlling method of high-speed packet access system and device

Technical field

The present invention relates to a kind of downlink call acceptance controlling method and device of radio honeycomb communication system, relate in particular to the call connection control method and the device of Wideband Code Division Multiple Access (WCDMA) (WCDMA) mobile communication system of supporting that the downlink high speed Packet Service inserts.

Background technology

The flank speed that the R99 standard agreement of WCDMA mobile communication system offers the user is generally 384kbps, and hot zones can provide the speed of 2Mbps.From the supported dedicated channel (dedicated channel:DCH) of transmitting grouped data and the performance of DSCH Downlink Shared Channel (downlink sharedchannel:DSCH) of being used for of R99, for the user in general area, the function of the transmission Packet Service that the R99 standard agreement provides can satisfy user's demand, but along with Packet Service user's increase and to the demand of high speed packet service, the rate bandwidth that R99 provides can not satisfy hot zones user's demand; Therefore the R5 standard agreement has been introduced the shared transmission channel (High SpeedDownlink Shared Channel:HS-DSCH) of a kind of high-speed packet, this channel adopts time-division and sign indicating number branch mode, and this channel has adopted and has mixed (HARQ) and Adaptive Modulation and Coding (AMC) technology of retransmitting automatically, makes peak rate can reach 10.8Mbps～30Mbps.Its final purpose is by providing high speed packet service to be inserted the capacity that increases system and reduces transmission delay to improve the requirement of user to service quality (Qos).

For existing under the high speed packet service situation,, therefore need not to reserve very big surplus into the power of high speed shared channels because Node B can be controlled the power that high speed shared channels can be used; And the transmitting power Node B of loaded service is uncontrollable on the dedicated channel, therefore in order to prevent the sudden rising of dedicated channel power, need reserve bigger power headroom for dedicated channel; Therefore for its admittance thresholding that is higher than loaded service on the non-high speed shared channels of admitting thresholding to be provided with of the Packet Service that carries on the high speed shared channels.But high-speed packet access system is the system of dedicated transmission channel and the coexistence of shared transmission channel, and the high speed shared channels loaded service can be to have the business that guarantees rate requirement, therefore radio network controller will be considered the power demand that guarantees the rate requirement business that has that carries on the power requirement of bearer service on the non-high speed shared channels and the high speed shared channels when admitting, if consider under the two conditions of demand, and adopt the admittance thresholding of dedicated transmission channel for bearer service on the non-high speed shared channels, be inequitable so in fact for DCH user, because the admittance thresholding with the power demand that guarantees the rate requirement business that carries on the high speed shared channels is a high-speed packet sharing information admission thresholding; If but bearer service on the non-high speed shared channels were adopted the admittance thresholding of sharing transmission channel, then when the duty ratio of non-high speed shared channels is higher, then the stability of system would be brought influence.

Therefore for the problem of the stability of the fairness that solves the non-high speed shared channels bearer service of packet high-speed connecting system and system, the present invention has provided the admittance control of the non-high speed shared channels bearer service of suitable high speed access system.

Summary of the invention

The acceptance controlling method and the device that the purpose of this invention is to provide the non-high speed shared channels bearer service of a kind of high-speed packet access system, embodying the fairness of non-high speed shared channels bearer service and high speed shared channels bearer service, and the stability of the system of assurance.

For realizing above-mentioned purpose of the present invention, the invention provides a kind of acceptance controlling method of high-speed packet access system, wherein, comprising:

Step a, radio network controller is predicted the load increment that brings to the non-high speed shared channels bearer service that request inserts;

Described load increment calculates by following formula:

$\mathrm{DeltaP}=\frac{\frac{E_b}{I_O}\·\frac{R}{W}\·({\tilde{N}}_0+\frac{1}{L}\·[(1-\mathrm{\α})+i]\·P_{\mathrm{total}\_\mathrm{old}})\·L}{1-\frac{E_b}{I_O}\·\frac{R}{W}\·[(1-\mathrm{\α})+i]}$

Wherein: DeltaP is the load increment that the business of the described request access of prediction is brought;

It is the professional needed quality factor that described request inserts;

R is the data rate of the business of described request access, and W is a bandwidth;

α is an orthogonal factor, and i is an interference factor;

P _{Total_old}: be the current downlink load in sub-district;

L is a path loss,

Be to make an uproar at the end;

Described P _{Total_old}Be the load that takies of current non-high speed shared channels and current high speed shared channels have the professional needed minimum load that guarantees rate requirement and;

The load that described current non-high speed shared channels takies is the employed total transmitting power of other physical channel except that HS-PDSCH+HS-SCCH; Described current high speed shared channels have the professional needed minimum load that guarantees rate requirement be all priority of reporting of Node B pairing have the professional needed minimum emissive power that guarantees speed and;

Step b, radio network controller judge whether the system loading state satisfies following condition simultaneously: load that current non-high speed shared channels takies and described load increment and admit thresholding smaller or equal to default first; And the load that described current non-high speed shared channels takies, described load increment and current high speed shared channels have the professional needed minimum load three sum of assurance rate requirement smaller or equal to the second default admittance thresholding; In this way, the non-high speed shared channels bearer service of then admitting described request to admit; As not, exclude the non-high speed shared channels bearer service that described request is admitted;

Wherein, the described first admittance thresholding is the admittance thresholding of non-high speed shared channels, and the described second admittance thresholding is the admittance thresholding of high speed shared channels.

Described method, wherein, described step b comprises:

Step b1, judge load that current non-high speed shared channels takies and described load increment and whether admit thresholding smaller or equal to default first; In this way, change step b2 over to; As not, then exclude the non-high speed shared channels bearer service that described request is admitted;

Step b2 judges the load that current non-high speed shared channels takies, and whether described load increment and current high speed shared channels have the professional needed minimum load three sum of assurance rate requirement smaller or equal to the second default admittance thresholding; In this way, the non-high speed shared channels bearer service of then admitting described request to admit; As not, then exclude the non-high speed shared channels bearer service that described request is admitted.

Described method, wherein, described step b comprises:

Step b11 judges the load that current non-high speed shared channels takies, and whether described load increment and current high speed shared channels have the professional needed minimum load three sum of assurance rate requirement smaller or equal to the second default admittance thresholding; In this way, change step b22 over to; As not, exclude the non-high speed shared channels bearer service that described request is admitted;

Step b22, judge load that current non-high speed shared channels takies and described load increment and whether admit thresholding smaller or equal to default first; In this way, the non-high speed shared channels bearer service of then admitting described request to admit; As not, exclude the non-high speed shared channels bearer service that described request is admitted.

Described method, wherein, it is configurable that the described first admittance thresholding and second is admitted thresholding.

The present invention also provides a kind of admission control device of high-speed packet access system, wherein, comprising:

One radio network controller, be used for the non-high speed shared channels bearer service of asking to insert is predicted the load increment that brings, and whether satisfy the business that the condition that allows admittance determines whether admitting the described request access by the load condition of judging described system;

Described load increment calculates by following formula:

$\mathrm{DeltaP}=\frac{\frac{E_b}{I_O}\·\frac{R}{W}\·({\tilde{N}}_0+\frac{1}{L}\·[(1-\mathrm{\α})+i]\·P_{\mathrm{total}\_\mathrm{old}})\·L}{1-\frac{E_b}{I_O}\·\frac{R}{W}\·[(1-\mathrm{\α})+i]}$

Wherein: DeltaP is the load increment that the business of the described request access of prediction is brought;

It is the professional needed quality factor that described request inserts;

R is the data rate of the business of described request access, and W is a bandwidth;

α is an orthogonal factor, and i is an interference factor;

P _{Total_old}: be the current downlink load in sub-district;

L is a path loss,

Be to make an uproar at the end;

Described P _{Total_old}Be the load that takies of current non-high speed shared channels and current high speed shared channels have the professional needed minimum load that guarantees rate requirement and;

The load that described current non-high speed shared channels takies is the employed total transmitting power of other physical channel except that HS-PDSCH+HS-SCCH; Described current high speed shared channels have the professional needed minimum load that guarantees rate requirement be all priority of reporting of Node B pairing have the professional needed minimum emissive power that guarantees speed and;

Wherein, the condition that described permission is admitted is: the load that current non-high speed shared channels takies and described load increment and smaller or equal to the first default load of admitting thresholding and described current non-high speed shared channels to take, described load increment and current high speed shared channels have guarantee rate requirement professional needed minimum load three sum smaller or equal to the second default admittance thresholding;

Wherein, the described first admittance thresholding is the admittance thresholding of non-high speed shared channels, and the described second admittance thresholding is the admittance thresholding of high speed shared channels.

Whether acceptance controlling method of the present invention allows non-high speed shared channels bearer service to insert by judgement and the non-high speed shared channels load to non-high speed shared channels load with the judgement decision that high speed shared channels has the professional needed minimum load sum that guarantees rate requirement, the admittance thresholding that is non-high speed shared channels load and non-high speed shared channels bearer service compares, and high speed shared channels has the minimum load of the business demand that guarantees rate requirement and the admittance thresholding of high speed shared channels bearer service compares, to guarantee that non-high speed shared channels bearer service inserts the fairness of sub-district and the stability of the system of assurance in high-speed packet.

Description of drawings

Fig. 1 is the flow chart of the acceptance controlling method of the non-high speed packet channel bearer service of high-speed packet system of the present invention;

Fig. 2 is the acceptance controlling method flow chart of the non-high speed packet channel bearer service of high-speed packet system of one embodiment of the invention.

Embodiment

Fig. 1 is the flow chart of the acceptance controlling method of the non-high speed packet channel bearer service of high-speed packet system of the present invention.As Fig. 1, the core concept of the inventive method comprises:

Step 101 when the non-high speed shared channels bearer service of new access, is predicted the load increment DeltaP that system brought after then earlier non-high speed shared channels bearer service being inserted dedicated channel;

Step 102, the admittance thresholding of the non-high speed shared channels bearer service of shared load sum of load increment and current non-high speed shared channels and setting relatively, if the shared load sum of load increment and current non-high speed shared channels is smaller or equal to the admittance thresholding of non-high speed shared channels bearer service, then execution in step 103; Otherwise admit refusal, promptly exclude the non-high speed shared channels bearer service that described request is admitted;

Step 103, load increment, the admittance thresholding that load that current non-high speed shared channels is shared and current high speed shared channels have the high speed shared channels bearer service of the professional needed minimum load three sum that guarantees rate requirement and setting compares, admit if allow, load increment even, load that current non-high speed shared channels is shared and current high speed shared channels have the admittance thresholding of the professional needed minimum load three sum of assurance rate requirement smaller or equal to the high speed shared channels bearer service, then admit successfully, the non-high speed shared channels bearer service of promptly admitting described request to admit, otherwise admit refusal.

Wherein the admittance thresholding of the described non-high speed shared channels bearer service of step 102 is configurable;

Wherein the admittance thresholding of the described high speed shared channels bearer service of step 103 is configurable;

And the order of step 102 and step 103 can be changed.

Be described in further detail below in conjunction with the enforcement of accompanying drawing technical scheme of the present invention.

Fig. 2 is the acceptance controlling method flow chart of the non-high speed packet channel bearer service of high-speed packet system of one embodiment of the invention.

In this embodiment, the shared load of non-high speed shared channels identifies with NoUsedHsdschPower.NoUsedHsdschPower is the employed total transmitting power of other physical channel except HS-PDSCH+HS-SCCH (high-speed physical downlink shared channel (HS-PDSCH)+High-Speed Shared Control Channel); High speed shared channels has the professional needed minimum load that guarantees rate requirement and uses Sign.HsdschRequiredPower _jBe the pairing professional needed minimum emissive power of each priority that Node B (Node B) reports with assurance speed, Snum: be the priority sum that Node B reports.Described step 101 can adopt following load prediction formula to predict:

$\mathrm{DeltaP}=\frac{\frac{E_b}{I_O}\·\frac{R}{W}\·({\tilde{N}}_0+\frac{1}{L}\·[(1-\mathrm{\α})+i]\·P_{\mathrm{total}\_\mathrm{old}})\·L}{1-\frac{E_b}{I_O}\·\frac{R}{W}\·[(1-\mathrm{\α})+i]}$

Wherein: DeltaP is the non-high speed packet channel bearer service that request inserts;

It is the needed quality factor of this business;

R is this professional data rate, and W is a bandwidth, is 3.84Mbps;

α is an orthogonal factor, and i is an interference factor;

P _{Total_old}: be the current downlink load in sub-district, its load evaluation formula is:

$\mathrm{NoUsdeHsdschPower}+\stackrel{\mathrm{Snum}}{\mathrm{\Σ}}\mathrm{HsdschRequiredPow}{\mathrm{er}}_j;$

L is a path loss,

Be to make an uproar at the end.

As Fig. 2, the method for one embodiment of the invention comprises the steps:

Step 200, radio network controller receive public-measurement report and the preservation of NoUsedHsdschPower and HsdschRequiredPower from Node B;

Step 201, when non-high speed shared channels loaded service is initiated request, execution in step 202;

Step 202 is predicted the load increment DeltaP that non-high speed shared channels bearer service brings the sub-district;

Step 203 judges that NoUsedHsdschPower+DeltaP is whether smaller or equal to the admittance thresholding of the non-high speed shared channels bearer service of setting; If smaller or equal to, then execution in step 204, otherwise execution in step 206 is promptly admitted refusal.

Wherein: NoUsedHsdschPower is the employed total transmitting power of other physical channel except HS-PDSCH+HS-SCCH (high-speed physical downlink shared channel (HS-PDSCH)+High-Speed Shared Control Channel).

Step 204: judge

Whether smaller or equal to the admittance thresholding of the high speed shared channels bearer service of setting; If smaller or equal to, then change step 205 over to, admit successfully, otherwise change step 206 over to, promptly admit refusal.

Wherein, HsdschRequiredPower _jBe the pairing professional needed minimum emissive power of each priority that Node B reports with assurance speed, Snum: be the priority sum that Node B reports.

The present invention is by the admittance thresholding of load that non-high speed shared channels brought and non-high speed shared channels bearer service relatively, high speed shared channels had the fairness that the admittance thresholding that guarantees needed minimum load of rate business and high speed shared channels bearer service relatively guarantees the non-high speed packet service of high-speed packet access system, and can guarantee the stability of system, realize simple.

The present invention also can have other various embodiments; under the situation that does not deviate from spirit of the present invention and essence thereof; those of ordinary skill in the art work as can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the present invention.

Claims (5)

1. the acceptance controlling method of a high-speed packet access system is characterized in that, comprising:

Step a, radio network controller is predicted the load increment that brings to the non-high speed shared channels bearer service that request inserts; Described load increment calculates by following formula:

$\mathrm{DeltaP}=\frac{\frac{E_b}{I_O}\·\frac{R}{W}\·({\tilde{N}}_0+\frac{1}{L}\·[(1-\mathrm{\α})+i]\·P_{\mathrm{total}\_\mathrm{old}})\·L}{1-\frac{E_b}{I_O}\·\frac{R}{W}\·[(1-\mathrm{\α})+i]}$

Wherein: DeltaP is the load increment that the business of the described request access of prediction is brought;

It is the professional needed quality factor that described request inserts;

R is the data rate of the business of described request access, and W is a bandwidth;

α is an orthogonal factor, and i is an interference factor;

P _{Total_old}: be the current downlink load in sub-district;

L is a path loss,

Be to make an uproar at the end;

Described P _{Total_old}Be the load that takies of current non-high speed shared channels and current high speed shared channels have the professional needed minimum load that guarantees rate requirement and;

The load that described current non-high speed shared channels takies is the employed total transmitting power of other physical channel except that HS-PDSCH+HS-SCCH; Described current high speed shared channels have the professional needed minimum load that guarantees rate requirement be all priority of reporting of Node B pairing have the professional needed minimum emissive power that guarantees speed and;

Step b, radio network controller judge whether the system loading state satisfies following condition simultaneously: load that current non-high speed shared channels takies and described load increment and admit thresholding smaller or equal to default first; And the load that described current non-high speed shared channels takies, described load increment and current high speed shared channels have the professional needed minimum load three sum of assurance rate requirement smaller or equal to the second default admittance thresholding; In this way, the non-high speed shared channels bearer service of then admitting described request to admit; As not, exclude the non-high speed shared channels bearer service that described request is admitted;

Wherein, the described first admittance thresholding is the admittance thresholding of non-high speed shared channels, and the described second admittance thresholding is the admittance thresholding of high speed shared channels.

2. method according to claim 1 is characterized in that, described step b comprises:

Step b1, judge load that current non-high speed shared channels takies and described load increment and whether admit thresholding smaller or equal to default first; In this way, change step b2 over to; As not, then exclude the non-high speed shared channels bearer service that described request is admitted;

Step b2 judges the load that current non-high speed shared channels takies, and whether described load increment and current high speed shared channels have the professional needed minimum load three sum of assurance rate requirement smaller or equal to the second default admittance thresholding; In this way, the non-high speed shared channels bearer service of then admitting described request to admit; As not, then exclude the non-high speed shared channels bearer service that described request is admitted.

3. method according to claim 1 is characterized in that, described step b comprises:

Step b11 judges the load that current non-high speed shared channels takies, and whether described load increment and current high speed shared channels have the professional needed minimum load three sum of assurance rate requirement smaller or equal to the second default admittance thresholding; In this way, change step b22 over to; As not, exclude the non-high speed shared channels bearer service that described request is admitted;

Step b22, judge load that current non-high speed shared channels takies and described load increment and whether admit thresholding smaller or equal to default first; In this way, the non-high speed shared channels bearer service of then admitting described request to admit; As not, exclude the non-high speed shared channels bearer service that described request is admitted.

4. method according to claim 1 is characterized in that, it is configurable that the described first admittance thresholding and second is admitted thresholding.

5. the admission control device of a high-speed packet access system is characterized in that, comprising:

One radio network controller, be used for the non-high speed shared channels bearer service of asking to insert is predicted the load increment that brings, and whether satisfy the business that the condition that allows admittance determines whether admitting the described request access by the load condition of judging described system;

Described load increment calculates by following formula:

$\mathrm{DeltaP}=\frac{\frac{E_b}{I_O}\·\frac{R}{W}\·({\tilde{N}}_0+\frac{1}{L}\·[(1-\mathrm{\α})+i]\·P_{\mathrm{total}\_\mathrm{old}})\·L}{1-\frac{E_b}{I_O}\·\frac{R}{W}\·[(1-\mathrm{\α})+i]}$

Wherein: DeltaP is the load increment that the business of the described request access of prediction is brought;

It is the professional needed quality factor that described request inserts;

R is the data rate of the business of described request access, and W is a bandwidth;

α is an orthogonal factor, and i is an interference factor;

P _{Total_old}: be the current downlink load in sub-district;

L is a path loss,

Be to make an uproar at the end;

Described P _{Total_old}Be the load that takies of current non-high speed shared channels and current high speed shared channels have the professional needed minimum load that guarantees rate requirement and;

The load that described current non-high speed shared channels takies is the employed total transmitting power of other physical channel except that HS-PDSCH+HS-SCCH; Described current high speed shared channels have the professional needed minimum load that guarantees rate requirement be all priority of reporting of Node B pairing have the professional needed minimum emissive power that guarantees speed and;

Wherein, the condition that described permission is admitted is: the load that current non-high speed shared channels takies and described load increment and smaller or equal to the first default load of admitting thresholding and described current non-high speed shared channels to take, described load increment and current high speed shared channels have guarantee rate requirement professional needed minimum load three sum smaller or equal to the second default admittance thresholding;

Wherein, the described first admittance thresholding is the admittance thresholding of non-high speed shared channels, and the described second admittance thresholding is the admittance thresholding of high speed shared channels.

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