CN101459956B - Load control method and apparatus - Google Patents

Abstract

The invention discloses a method and a device for controlling loads, which are applied to a high-speed upgoing chain circuit grouping accessing HSUPA system, wherein the method comprises the following steps: measuring the received power interference value ISCP of each adjacent community through a base station, during the next dispatching, taking the measured interference value ISCP as reference, combining a wireless network controller RNC to allocate to the ROT threshold value of the base station, calculating the total receiving power which can be received by the base station, thereby obtaining the total ROT value which the dispatched base station can allocate, according to the priority level rule, and orderly allocating the ROT for users until the sum of the allocated ROT reaches the total ROT value which the base station can allocate. The ROT value which is allocated to the user is transformed into the upgoing signal receiving power of the users, thereby obtaining the power deviated value of the user during the dispatching. The method of the invention can control the upgoing receiving power well and enables the system to be in a stable state.

Description

A kind of duty control method and device

Technical field

The present invention relates to moving communicating field, refer to that especially a kind of High Speed Uplink Packet that is used for inserts (HighSpeed Uplink Packet Access, HSUPA) duty control method of system and device.

Background technology

The code division multiple access synchronous in the time-division inserts (Time Division-Synchronous Code DivisionMultiple Access; TD-SCDMA) in the system, uplink code channel is resource-constrained, and power resource is also limited; Therefore the High Speed Uplink Packet at TD-SCDMA inserts (High Speed Uplink PacketAccess; HSUPA) in the system, (Orthogonal VariableSpreading Codes is OVSF) resource the time at control orthogonal variable spreading code; Also to control interference noise added value (Rise ofThermal Noise, ROT).The load control strategy of HSUPA system is exactly the mode through control ROT, reaches the purpose of control upward signal received power, thereby makes system be in stable state.Because the resource-sharing characteristic of HSUPA; Each Transmission Time Interval (Transmission Time Interval, the user who TTI) obtains dispatching changes, simultaneously; Can not exchange information between the NodeB in the real system; Therefore, in when scheduling, control the up received power comparison difficulty that just becomes accurately.

In the HSUPA system, scheduling and correlation module are arranged in base station NodeB, and (Radio Network Controller has reduced signaling consumption and time delay in RNC), the carrying out of the control that also helps simultaneously loading with respect to being placed on radio network controller for this.In load control, in order to control ROT, need the received power of two aspects of control, be from this community user received power on the one hand, be the interference of neighbor cell on the other hand.For time division duplex (Time Division Duplex; TDD) system; Owing to adopt technology such as joint-detection, smart antenna; The interference of neighbor cell accounts for major part, and (Interference Signal Code Power, measurement ISCP) can obtain the interference from neighbor cell approx through Interference Signal Code Power.Owing to can not exchange information between the NodeB, therefore in existing TD-SCDMA dispatching algorithm, load control is to reach each sub-district received power control purpose within the specific limits through the mode that each sub-district control self user disturbs the adjacent area.A kind of implementation is the ROT of each sub-district of control to the adjacent area, reaches the purpose that this sub-district of control receives ROT through the mode of restraining oneself, and implementation procedure is following:

$\underset{i}{\mathrm{\Σ}}({\mathrm{RoT}}_{i,k}+{\mathrm{Inter}\_\mathrm{RoT}}_{i,k})=\underset{i}{\mathrm{\Σ}}\frac{P_{i,k}}{N_0}(1+\frac{1}{{\mathrm{LMetric}}_i})$

$\≤\mathrm{RoT}\_\mathrm{THD}$

Wherein, RoT_THD is that RNC disposes to NodeB, is the ROT threshold value of each sub-district.RoT _{I, k}Be meant the ROT value of distributing to i user in the k of sub-district.Inter_RoT _{I, k}Serving cell and adjacent sub-district path loss information through terminal to report of the ROT value that to be i user produce the adjacent area, this value (Service Neighbor PassLoss, SNPL), i.e. L Metric estimation.

Suppose that the resource that a certain user dispatches distribution is RoT _i, then can obtain its received power and be:

$P_{i,k}=\frac{N_0\·{\mathrm{RoT}}_i}{1+\frac{1}{{\mathrm{LMetric}}_i}}$

The power ratio that obtains that this value and terminal power ability, buffer data size are calculated obtains the final power skew.

There is following problem in the algorithm that above-mentioned mode through this sub-district self-discipline reaches control ROT:

1) skew of NodeB rated output is the SNPL that reports through UE, like this, just has the incomplete same problem of up-downgoing channel fading, if power control is not again very timely and accurate, will cause the sub-district received power can not be controlled at ROT*N fully ₀In (linear value) scope.ROT is that RNC is the threshold value and the N of the total received power of base station configuration ₀Ratio; N ₀Be white noise power.

2) because characteristics such as user's motion, Rayleigh fadings, the user is also inequality to the interference of this sub-district with the adjacent area to the interference of adjacent area.Like this, also can cause the power division process inaccurate.

Summary of the invention

The present invention provides a kind of duty control method and device, can control up received power preferably by the base station.

A kind of duty control method comprises:

The Interference Signal Code Power ISCP value of the adjacent sub-district that the base station records when dispatching according to the last time, the total received power of this community user that can receive when calculating this scheduling;

This community user is distributed to said total received power in the base station.

According to said method of the present invention, the total received power of this community user that can receive during this scheduling of said calculating is specially:

Using radio network controller (RNC) is the threshold value of the total received power of said base station configuration, deducts said ISCP value, the total received power of this community user that can receive when obtaining this scheduling.

According to said method of the present invention, this community user is distributed to said total received power in said base station, is specially:

Said total received power is converted to the increase ROT value of total interference noise that can distribute the base station;

For this community user distributes the ROT value;

The ROT value sum of this community user is distributed to the time in this scheduling of accumulative total, and with said total ROT value comparison, when the ROT value sum of distributing to this community user during, continue as next user and distribute the ROT value less than said total ROT value; Otherwise, stop to distribute.

According to said method of the present invention, said for this community user distributes the ROT value, be specially:

From the User Priority formation of preserving, according to priority from high to low order is extracted the user successively, for the user who extracts distributes the ROT value.

According to said method of the present invention, said for the user who extracts distributes the ROT value, be specially:

Be required to be this user according to the user and distribute corresponding ROT value; Perhaps

When this user is Cell Edge User, for it distributes less than its needed ROT value.

According to said method of the present invention, also comprise:

The ROT value of distributing to the user is converted to this user's upward signal received power value.

According to said method of the present invention, this community user is distributed to said total received power in said base station, is specially:

The upward signal received power is distributed for this community user in the base station;

The upward signal received power sum of this community user is distributed in this scheduling of accumulative total; And with said total received power relatively; When the said upward signal received power sum of distributing to this sub-district user during, continue as next user and distribute the upward signal received power less than said total received power; Otherwise, stop to distribute.

According to said method of the present invention, said base station is specially for this community user distributes the upward signal received power:

From the User Priority formation of preserving, according to priority from high to low order is extracted the user successively, for the user who extracts distributes the upward signal received power.

According to said method of the present invention, said for the user who extracts distributes the upward signal received power, be specially:

Be required to be this user according to the user and distribute corresponding upward signal received power; Perhaps

When this user is Cell Edge User, for it distributes less than its needed upward signal received power.

According to said method of the present invention, the total received power of this community user that can receive during this scheduling of said calculating is specially:

The said ISCP value of a plurality of time slots that record when the last time is dispatched is carried out smoothing processing, the ISCP value after the employing smoothing processing, the total received power of this community user that can receive when calculating this scheduling.

According to said method of the present invention, when this community user is distributed to the said total received power that can receive in said base station, also comprise:

When code channel resource is used up, stop to distribute.

A kind of base station comprises: measurement module, computing module and power division module;

Said measurement module is used for when each scheduling, measuring the Interference Signal Code Power ISCP value of the user of neighbor cell to this cell base station;

Said computing module, the total received power of this community user that the base station can receive when being used for calculating this scheduling according to said ISCP value;

Said power division module is used for said total received power is distributed to this community user.

According to above-mentioned base station of the present invention, said power division module comprises: power transfer submodule, ROT distribution sub module, the first statistics submodule, first comparison sub-module and ROT conversion submodule;

Said power transfer submodule, the total received power of this community user that is used for said base station can be received converts total ROT value that the base station can be distributed to;

Said ROT distribution sub module is used to this community user and distributes the ROT value;

The said first statistics submodule is used for the ROT sum that this community user is distributed in this scheduling of accumulative total;

Said first comparison sub-module; Be used for the ROT value sum of more said first distribution that counts of statistics submodule and the size of said total ROT value; When the ROT value sum of distributing during, notify the ROT distribution sub module to continue as next user and distribute ROT less than said total ROT value; Otherwise notice ROT distribution sub module stops to distribute ROT for the user;

Said ROT changes submodule, is used for the ROT value of distributing to the user is converted to this user's upward signal received power value.

According to above-mentioned base station of the present invention, said power division module comprises: power division submodule, the second statistics submodule and second comparison sub-module;

Said power division submodule is used to this community user and distributes the upward signal received power;

The said second statistics submodule is used for the upward signal received power sum that this community user is distributed in this scheduling of accumulative total;

Said second comparison sub-module; Be used for the more said second statistics upward signal received power sum of distributing to this community user that counts of submodule and the size of said total received power; When the upward signal received power sum of giving this community user of distributing during less than said total received power, notice power division submodule continues as next user and distributes the upward signal received power; Otherwise notice power division submodule stops to distribute the upward signal received power for the user.

According to above-mentioned base station of the present invention, said measurement module also is used for:

The said ISCP value of a plurality of time slots that record when the last time is dispatched is carried out smoothing processing.

Duty control method that the embodiment of the invention provides and device are through the value of base station measurement ISCP, when dispatching next time; With the value that records ISCP is reference; The total received power that calculation base station can receive is realized the load control to the base station, can be good at controlling the up received power of base station; According to calculate total received power that the base station can receive for the user distributes up received power, improved the accuracy of the assigning process of power; Under the situation that does not increase extra metrical information and expense, make the base station received power can be in time, exactly control within the specific limits, thereby make whole wireless system be in stable state.

Description of drawings

Fig. 1 is the flow chart of duty control method in the embodiment of the invention one;

Fig. 2 is the structural representation of base station in the embodiment of the invention one;

Fig. 3 is the flow chart of duty control method in the embodiment of the invention two;

Fig. 4 is the structural representation of base station in the embodiment of the invention two.

Embodiment

Embodiment one:

In the HSUPA system, load control can realize in NodeB.NodeB can measure Interference Signal Code Power (the Interference Signal Code Power from each adjacent sub-district; ISCP); The foundation of load control when dispatching as next time with this promptly when each TTI scheduling distributes power, can be estimated current ISCP according to the ISCP of last time.

Through specific embodiment duty control method is described in detail below.

Embodiment one: adopt the mode of ROT thresholding to control received power.

The concrete realization flow of embodiment one is as shown in Figure 1, comprises the steps:

Step S101: the ISCP value when measuring last TTI scheduling, and the ISCP value that records carried out smoothing processing.

Being provided with J base station and interacting, is example with wherein base station k, and then base station k receives the influence of other J-1 base stations.Wherein, base station j can be expressed as the ISCP value that base station k disturbs when the m time TTI scheduling: ISCP _{M, j}

For the TDD system, a TTI has a plurality of HSUPA business time-slots, and the ISCP value that then each TTI records when dispatching in order to increase by the correlation of twice ISCP in NodeB front and back, need be carried out smoothing processing for the mean value of a plurality of time slots to ISCP.

The smoothing processing process can adopt following method:

Be example still with an above-mentioned J base station, the ISCP value ISCP that base station j disturbs base station k in the time of calculating the m time TTI scheduling _{M, j}

If m TTI scheduling has n time slot, then:

${\mathrm{ISCP}}_{m,j}=\frac{1}{n}\underset{i=1}{\overset{n}{\mathrm{\Σ}}}\stackrel{\‾}{{\mathrm{ISCP}}_i}$

${\stackrel{\‾}{\mathrm{ISCP}}}_i=\stackrel{\‾}{{\mathrm{ISCP}}_{i-1}}*f+{\mathrm{ISCP}}_i*(1-f)$

Wherein: the ISCP value of i time slot when

is the m time TTI scheduling;

F is a smoothing factor, and span is [0,1], and concrete value can be confirmed through emulation.Initial ISCP when n=0 is provided with as follows:

$\stackrel{\‾}{{\mathrm{ISCP}}_0}=\mathrm{ROT}*N_0*\mathrm{\α}$

Wherein: α is that disturb and local area received power ratio the adjacent area;

ROT is the threshold value of RNC configuration, and ROT is that RNC is the threshold value and the N of the total received power of base station configuration ₀Ratio;

N ₀Be white noise power.

Step S102: the value of the ISCP that records when dispatching, the reference value that disturb the adjacent area during as this TTI scheduling, the total received power of this community user that the base station can receive when calculating this TTI scheduling with last TTI.

Be example with above-mentioned base station k still, the method that provides according to step S101 can calculate the ISCP interference value of k J-1 base station on every side in base station to base station k, during then this TTI scheduling (the m+1 time TTI scheduling), and the total received power P that base station k can receive _{M+1, k}For:

$P_{m+1,k}=\mathrm{ROT}*N_0-\underset{j=1,j\≠k}{\overset{J}{\mathrm{\Σ}}}{\mathrm{ISCP}}_{m,j}$

When then this TTI dispatches, the sub-district at base station k place, total received power of its user satisfies following condition:

$\underset{i=1}{\overset{N}{\mathrm{\&Sigma;}}}{P}_{i,k}<=\mathrm{ROT}*N_0-\underset{j=1,j\&NotEqual;k}{\overset{J}{\mathrm{\&Sigma;}}}{\mathrm{ISCP}}_j$

Wherein, i representes i user who obtains dispatching in the sub-district at base station k place, establishes total total N user and obtains dispatching.

Step S103: the mode through the ROT thresholding is controlled received power.The total received power of this community user that the base station can be received converts total ROT value that the base station can be distributed to;

With base station k is example, then need the total received power from each user of this sub-district that base station k can receive be converted to total ROT thresholding ROT of base station k _{THRSH, k}Represent, that is:

${\mathrm{ROT}}_{\mathrm{THRSH},k}=(\mathrm{ROT}*N_0-\underset{j=1,j\&NotEqual;k}{\overset{J}{\mathrm{\&Sigma;}}}{\mathrm{ISCP}}_j)/N_0$

Wherein, ROT _{THRSH, k}Total ROT thresholding for base station k.

Step S104: when scheduling, from priority query, take out the user successively,, reach ROT until the ROT sum of distributing to each user for this community user distributes ROT _{THRSH, k}Till perhaps code channel resource is used up.

When distributing ROT, carry out the demand assigned principle for the user.Known: the base station can be waited the maximum of the ROT that calculates these user's needs according to cache information, the maximum transmission power of reporting of user; When then a user is taken out in the base station from priority query, distribute ROT for this user according to the maximum of the needed ROT of this user.

Special, as the remaining ROT in base station during less than the needed ROT of user of current taking-up, the active user is distributed to remaining ROT in the base station.

The ROT value sum of this community user is distributed in this scheduling of accumulative total, and with said total ROT value comparison, when the ROT value sum of distributing to this community user during, continue as next user and distribute the ROT value less than said total ROT value; Otherwise, stop to distribute.

Be example with base station k still, then base station k distributes to i the user's in this sub-district ROT value representation and is: ROT _{I, k}

The above-mentioned ROT value of distributing to each user is converted into this user's upward signal performance number; This user's upward signal power is compared when dispatching with the last time that calculates according to terminal power ability, buffer data size, this user's power offset values when obtaining this scheduling.

Step S105: the ROT sum of distributing to this community user when adding up this TTI scheduling.

Continue to use above-mentioned example, the ROT sum that base station k distributes to this users of all cells is

Step S106: relatively

With ROT _{THRSH, k}Size.If $\underset{i-1}{\overset{N}{\mathrm{\&Sigma;}}}{\mathrm{ROT}}_{i,k}<{\mathrm{ROT}}_{\mathrm{THRSH},k},$ Then return step S104, if $\underset{i-1}{\overset{N}{\mathrm{\&Sigma;}}}{\mathrm{ROT}}_{i,k}\&GreaterEqual;{\mathrm{ROT}}_{\mathrm{THRSH},k},$ Execution in step S107 then.

Step S107: base station k stops to distribute ROT for the user.

In order further to limit the interference of edge customer to the base station, can further optimize said method, through the SNPL information of terminal to report, judge customer location, the transmitting power of edge customer is carried out suitable restriction, reduced the interference of edge customer.Be specially: according to the diverse location of user in the sub-district, divide timing to give different proportionality coefficients carrying out ROT, reduce the ROT value of distributing to edge customer with this, thereby reach the purpose of suitable reduction from the received power of edge customer.Be specially:

With above-mentioned formula $\underset{i-1}{\overset{N}{\mathrm{\&Sigma;}}}{\mathrm{ROT}}_{i,k}<{\mathrm{ROT}}_{\mathrm{THRSH},k}$ Revise as follows:

$\underset{i-1}{\overset{N}{\mathrm{\&Sigma;}}}\mathrm{\&beta;}*{\mathrm{ROT}}_{i,k}{<\mathrm{ROT}}_{\mathrm{THRSH},k}$

Wherein: β is a position parameter, by the residing determining positions of user; When the user was positioned at the center of sub-district, then the β value was 1; When the user was positioned at the edge of sub-district, then β got the value less than 1.

That is: actual allocated is given the ROT of edge customer, for the needed ROT of edge customer multiply by a factor beta, when the ROT sum that statistics dispenses, also is to add up multiply by factor beta value afterwards.Because when the user was positioned at the edge of sub-district, then β got the value less than 1, the as many as ROT that distributes to edge customer that reduced.

The residing position of user is through the SNPL information acquisition of terminal to report, and the concrete value of β can be according to covering requirement or runing strategy and come given.

According to the duty control method that the above embodiment of the present invention one provides, a kind of architecture of base station of the control that can realize loading is as shown in Figure 2, comprising: measurement module 201, computing module 202 and power division module 203;

Measurement module 20l is used for when each scheduling, and the user of measuring adjacent cells is to the ISCP value of this cell base station, and the neighbor cell user who records is carried out smoothing processing to the ISCP value of this cell base station.

Computing module 202, the ISCP value the during last scheduled that is used for recording, the total received power of this community user that the base station can receive when calculating this scheduling according to measurement module 201.

Power division module 203, the total received power of this community user that is used for the base station can be received is distributed to this community user.

Preferable, power division module 203 can also comprise: power transfer submodule 203l, ROT distribution sub module 2032, the first statistics submodule 2033, first comparison sub-module 2034 and ROT conversion submodule 2035;

Power transfer submodule 2031, the total received power of this community user that the base station that is used for that computing module 202 is calculated can receive convert total ROT value that the base station can be distributed to.

ROT distribution sub module 2032 is used for taking out the user from priority query successively, for the user distributes the ROT value.

The first statistics submodule 2033, the ROT sum that ROT distribution sub module 2032 is dispensed when being used to add up this scheduling.

First comparison sub-module 2034; The size of total ROT value that the base station that all ROT sums that dispense and power transfer submodule 2031 obtain when being used for this scheduling that comparison first statistics submodule 2033 statistics obtain can be distributed; If total ROT value that all ROT sums that dispense can be distributed less than the base station during this scheduling; Then notify ROT distribution sub module 2032 to continue as next user and distribute ROT, otherwise notice ROT distribution sub module 2032 stops to distribute ROT for the user.

ROT conversion submodule 2035 is used for the ROT value that ROT distribution sub module 2032 is distributed to the user is converted to this user's upward signal received power value.

Embodiment two: directly distribute the upward signal received power for community user.

The base station also can not change into the form of ROT when carrying out power division to community user, and directly distributes the upward signal received power for community user, and concrete realization flow is as shown in Figure 3, comprises the steps:

Step S301: from the ISCP value of each adjacent sub-district, and the ISCP value that records carried out smoothing processing when measuring last TTI scheduling.

Concrete processing method repeats no more at this with the step S101 of one li of embodiment.

Step S302: the value of the ISCP that records when dispatching, the reference value that disturb the adjacent area during as this TTI scheduling, the total received power P of this community user that the base station can receive when calculating this TTI scheduling with last TTI _{M+1, k}

Concrete processing method repeats no more at this with the step S102 of one li of embodiment.

Step S303: when scheduling; From priority query, take out the user successively; Be that this community user distributes the upward signal received power, till total received power or code channel resource that the upward signal received power sum of distributing to each user reaches this community user that the base station can receive are used up.

When distributing the upward signal received power, carry out the demand assigned principle for the user.Known: the base station can be waited the maximum of the upward signal received power that calculates these user's needs according to cache information, the maximum transmission power of reporting of user; When then a user is taken out in the base station from priority query, distribute the upward signal received power for this user according to the maximum of the needed upward signal received power of this user.

Special, when the remaining total received power in base station during less than the needed upward signal received power of the user of current taking-up, the active user is distributed to remaining total received power in the base station.

The upward signal received power sum of this community user is distributed in this scheduling of accumulative total; And with said total received power relatively; When the upward signal received power sum of distributing to this community user during, continue as next user and distribute the upward signal received power less than said total received power; Otherwise, stop to distribute.

With the upward signal performance number of distributing to each user, this user's upward signal power is compared when dispatching with the last time that calculates according to terminal power ability, buffer data size, this user's power offset values when obtaining this scheduling.

Step S304: the upward signal received power sum

of distributing to this community user when adding up this TTI scheduling

Step S305: relatively

With P _{M+1, k}Size.If $\underset{i=1}{\overset{N}{\mathrm{\&Sigma;}}}{P}_{i,k}<P_{m+1,k},$ Then return step S303, if $\underset{i=1}{\overset{N}{\mathrm{\&Sigma;}}}{P}_{i,k}\&GreaterEqual;P_{m+1,k},$ Execution in step S306 then.

Step S306: base station k stops to distribute the upward signal received power for this community user.

Same, in order further to limit the interference of edge customer, can further optimize said method to the base station; SNPL information through terminal to report; Judge customer location, the transmitting power of edge customer is carried out suitable restriction, reduced the interference of edge customer.Be specially: according to the diverse location of user in the sub-district, divide timing to give different proportionality coefficients carrying out the upward signal received power, reduce the upward signal received power of distributing to edge customer with this.Be specially:

With above-mentioned formula $\underset{i=1}{\overset{N}{\mathrm{\&Sigma;}}}{P}_{i,k}<P_{m+1,k}$ Revise as follows:

$\underset{i=1}{\overset{N}{\mathrm{\&Sigma;}}}{\mathrm{\&beta;}*P}_{i,k}<P_{m+1,k}$

Wherein: β is a position parameter, by the residing determining positions of user; When the user was positioned at the center of sub-district, then the β value was 1; When the user was positioned at the edge of sub-district, then β got the value less than 1.

That is: actual allocated is given the upward signal received power of edge customer; For the needed upward signal received power of edge customer multiply by a factor beta; When the upward signal received power sum that statistics dispenses, also be to add up multiply by factor beta value afterwards.Because when the user was positioned at the edge of sub-district, then β got the value less than 1, the as many as upward signal received power of distributing to edge customer that reduced.

The residing position of user is through the SNPL information acquisition of terminal to report, and the concrete value of β can be according to covering requirement or runing strategy and come given.

According to the duty control method that the above embodiment of the present invention two provides, a kind of architecture of base station of the control that can realize loading is as shown in Figure 4, comprising: measurement module 401, computing module 402 and power division module 403;

Measurement module 401 is used for when each scheduling, and the user of measuring adjacent cells is to the ISCP value of this cell base station, and the neighbor cell user who records is carried out smoothing processing to the ISCP value of this cell base station.

Computing module 402, the ISCP value the during last scheduled that is used for recording, the total received power of this community user that the base station can receive when calculating this scheduling according to measurement module 401.

Power division module 403, the total received power of this community user that is used for the base station can be received is distributed to this community user.

Preferable, power division module 403 can also comprise: power division submodule 4031, the second statistics submodule 4032 and second comparison sub-module 4033;

Power division submodule 4031 is used for taking out the user from priority query successively, for the user distributes the upward signal received power.

The second statistics submodule 4032,4031 upward signal received power sums of distributing to this community user of power division submodule when being used to add up this scheduling.

Second comparison sub-module 4033; The size of the total received power of the upward signal received power sum of this community user and this community user that the base station can receive when being used for this scheduling that comparison second statistics submodule 4032 statistics obtain; If this in when scheduling this community user the total received power of upward signal received power sum this community user that can receive less than the base station; Then notify power division submodule 4031 to continue as next user and distribute the upward signal received power; Otherwise notice power division submodule 4031 stops to distribute the upward signal received power for the user.

The value of ISCP when the embodiment of the invention is dispatched through base station measurement at every turn; The control of loading of the mode of the reference quantity that disturb adjacent area when dispatching as next time with this; Utilize the correlation of base station twice interference in front and back; In changes in channel conditions is not under the situation clearly, can control up received power preferably; Through the SNPL information of terminal to report, judge customer location, the transmitting power of edge customer is carried out suitable restriction, reduced the interference of edge customer; The inventive method under the situation that does not increase extra metrical information and expense, make the base station received power can be in time, exactly control within the specific limits, thereby make entire wireless communication system be in stable state.

The above; Be merely the preferable embodiment of the present invention; But protection scope of the present invention is not limited thereto; Any technical staff who is familiar with the present technique field variation that can expect easily, replaces or is applied to other similar devices in the technical scope that the present invention discloses, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claims.

Claims (13)

1. a duty control method is characterized in that, comprising:

The Interference Signal Code Power ISCP value that the base station records when dispatching according to the last time, the total received power of this community user that can receive when calculating this scheduling;

This community user is distributed to said total received power in the base station; Specifically comprise:

Said total received power is converted to the increase ROT value of total interference noise that can distribute the base station; For this community user distributes the ROT value; The ROT value sum of this community user is distributed to the time in this scheduling of accumulative total, and with said total ROT value comparison, when the ROT value sum of distributing to this community user during, continue as next user and distribute the ROT value less than said total ROT value; Otherwise, stop to distribute; Or

The upward signal received power is distributed for this community user in the base station; The upward signal received power sum of this community user is distributed in this scheduling of accumulative total; And with said total received power relatively; When the said upward signal received power sum of distributing to each user of this sub-district during, continue as next user and distribute the upward signal received power less than said total received power; Otherwise, stop to distribute.

2. the method for claim 1 is characterized in that, the total received power of this community user that can receive during this scheduling of said calculating is specially:

Using radio network controller (RNC) is the threshold value of the total received power of said base station configuration, deducts said ISCP value, the total received power of this community user that can receive when obtaining this scheduling.

3. the method for claim 1 is characterized in that, and is said for this community user distributes the ROT value, is specially:

From the User Priority formation of preserving, according to priority from high to low order is extracted the user successively, for the user who extracts distributes the ROT value.

4. method as claimed in claim 3 is characterized in that, and is said for the user who extracts distributes the ROT value, is specially:

Be required to be this user according to the user and distribute corresponding ROT value; Perhaps

When this user is Cell Edge User, for it distributes less than its needed ROT value.

5. the method for claim 1 is characterized in that, also comprises:

The ROT value of distributing to the user is converted to this user's upward signal received power value.

6. the method for claim 1 is characterized in that, said base station is specially for this community user distributes the upward signal received power:

From the User Priority formation of preserving, according to priority from high to low order is extracted the user successively, for the user who extracts distributes the upward signal received power.

7. method as claimed in claim 6 is characterized in that, and is said for the user who extracts distributes the upward signal received power, is specially:

Be required to be this user according to the user and distribute corresponding upward signal received power; Perhaps

When this user is Cell Edge User, for it distributes less than its needed upward signal received power.

8. the method for claim 1 is characterized in that, the total received power of this community user that can receive during this scheduling of said calculating is specially:

The said ISCP value of a plurality of time slots that record when the last time is dispatched is carried out smoothing processing, the ISCP value after the employing smoothing processing, the total received power of this community user that can receive when calculating this scheduling.

9. the method for claim 1 is characterized in that, when this community user is distributed to the said total received power that can receive in said base station, also comprises:

When code channel resource is used up, stop to distribute.

10. a base station is characterized in that, comprising: measurement module, computing module and power division module;

Said measurement module is used for when each scheduling, measuring Interference Signal Code Power ISCP value;

Said computing module, the total received power of this community user that the base station can receive when being used for calculating this scheduling according to said ISCP value;

Said power division module is used for said total received power is distributed to this community user; Specifically comprise:

Said total received power is converted to the increase ROT value of total interference noise that can distribute the base station; For this community user distributes the ROT value; The ROT value sum of this community user is distributed to the time in this scheduling of accumulative total, and with said total ROT value comparison, when the ROT value sum of distributing to this community user during, continue as next user and distribute the ROT value less than said total ROT value; Otherwise, stop to distribute; Or

The upward signal received power is distributed for this community user in the base station; The upward signal received power sum of this community user is distributed in this scheduling of accumulative total; And with said total received power relatively; When the said upward signal received power sum of distributing to each user of this sub-district during, continue as next user and distribute the upward signal received power less than said total received power; Otherwise, stop to distribute.

11. base station as claimed in claim 10 is characterized in that, said power division module comprises: power transfer submodule, ROT distribution sub module, the first statistics submodule, first comparison sub-module and ROT conversion submodule;

Said power transfer submodule, the total received power of this community user that is used for said base station can be received converts total ROT value that the base station can be distributed to;

Said ROT distribution sub module is used to this community user and distributes the ROT value;

The said first statistics submodule is used for the ROT sum that this community user is distributed in this scheduling of accumulative total;

Said first comparison sub-module; Be used for the ROT value sum of more said first distribution that counts of statistics submodule and the size of said total ROT value; When the ROT value sum of distributing during, notify the ROT distribution sub module to continue as next user and distribute ROT less than said total ROT value; Otherwise notice ROT distribution sub module stops to distribute ROT for the user;

Said ROT changes submodule, is used for the ROT value of distributing to the user is converted to this user's upward signal received power value.

12. base station as claimed in claim 10 is characterized in that, said power division module comprises: power division submodule, the second statistics submodule and second comparison sub-module;

Said power division submodule is used to this community user and distributes the upward signal received power;

The said second statistics submodule is used for the upward signal received power sum that this community user is distributed in this scheduling of accumulative total;

Said second comparison sub-module; Be used for the more said second statistics upward signal received power sum of distributing to this community user that counts of submodule and the size of said total received power; When the upward signal received power sum of giving this community user of distributing during less than said total received power, notice power division submodule continues as next user and distributes the upward signal received power; Otherwise notice power division submodule stops to distribute the upward signal received power for the user.

13. base station as claimed in claim 10 is characterized in that, said measurement module also is used for:

The said ISCP value of a plurality of time slots that record when the last time is dispatched is carried out smoothing processing.

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