CN102573095B - User scheduling method and device - Google Patents

Abstract

The invention discloses a user scheduling method and a user scheduling device, which are applied to a time division-synchronous code division multiple access (TD-SCDMA) system supporting adaptive predictive encoding (APE). The method comprises the following steps of: when a scheduling period is reached, determining the average speed and instantaneous code rates of scheduled users, wherein the instantaneous code rate of each scheduled user is obtained by multiplying an initial code rate mapped with a signal to noise ratio of the scheduled user with a timeslot resource influence factor beta of the scheduled user, the beta of each scheduled user is directly proportional to the TSnum of the scheduled user, and the TSnum of each scheduled user is the maximum total number of evolved physical uplink channel (E-PUCH) timeslot resources which can be occupied by the scheduled user in a current scheduling period; determining a scheduling reference value SDL' of each scheduled user by adopting a weight proportional fair (WPF) algorithm according to the average speed and instantaneous code rate of the scheduled user; and scheduling each scheduled user according to the determined SDL' of each scheduled user. By the method and the device, the data throughput of an air interface can be well improved, and the uplink service awareness of the user can be remarkably improved.

Description

A kind of user scheduling method and device

Technical field

The present invention relates to wireless communication technology field, relate in particular to a kind of user scheduling method and device that is applied to the TD-SCDMA system of supporting adaptive predictive encoding APE.

Background technology

With respect to WCDMA (Wireless Code Division Multiple Access, wireless code division multiple address access), CDMA2000, TD-SCDMA (Time Division-Synchronous Code DivisionMultiple Access, TD SDMA) belong to code channel resource constrained system, throughput and the spectrum efficiency of system are limited to code channel resource.Therefore, the utilization ratio that improves code channel resource is the key that promotes the TD-SCDMA availability of frequency spectrum, can improve the availability of frequency spectrum by the code channel resource utilance of various raising channels.

APE (Adaptive Prencdictive Encoding, adaptive predictive encoding) is that the one of HSUPA (HighSpeed Uplink Packet Access, high speed uplink packet access) strengthens technology.The maximum that should ensure resource on APE characteristic requirements scheduling strategy is used, and embodies the performance of APE.Introduce after APE characteristic, E-PUCH (Evolved Physical Uplink Channel, the physical uplink channel of evolution) by with time slot in except HS-SICH (High Speed-Shared Information Channel, high-speed shared information channel) other outer channel carries out frame and divides multiplexing, certain user's E-PUCH can share time interval resource transmission with the HS-SICH of another CU, under certain condition, same user's E-PUCH can share time interval resource transmission with HS-SICH, do not affect descending HSDPA (High SpeedDownlink Packet Access thereby realize, high speed downlink packet access) throughput and improve up HSUPA (HighSpeed Uplink Packet Access, high speed uplink packet access) target of the throughput of eating dishes without rice or wine.

Be multiplexed with example to follow channel twice frame to divide, as shown in Figure 1, in N+2 subframe, N+6 subframe, E-PUCH can be total to slot transmission with HS-SICH.

At present, base station NodeB is at TTI (Transmission Time Interval dispatching cycle, Transmission Time Interval) user is dispatched in (being generally a subframe), be specially fair WPF (Weight PF) dispatching algorithm of application weighting direct ratio and determine the scheduling reference value of dispatched users, scheduling reference value is larger, dispatching priority is higher, and the user's that override is scheduled scheduling reference value is:

$\mathrm{SDL}=\underset{j=1,...,k}{\arg \max }\{{\mathrm{DRC}}_j{\left(t\right)}^{\mathrm{\α}}\·\frac{{\mathrm{DRC}}_j\left(t\right)}{R_j\left(t\right)}\}$

Wherein, DRC _j(t) be the instantaneous code check of user j, k is the total number of users of current TTI scheduling; R _j(t) be the Mean Speed of user j in current TTI; α is the fair factor of influence arranging.

Particularly, according to user's channel quality, by calculating active user's signal to noise ratio, signal to noise ratio is mapped as to user's instantaneous code check; Set current TTI and be positioned at n subframe, the bit number of carried of the data that are this user assignment in Mean Speed and the base station of (n-2) subframe in (n-1) individual subframe according to user, adopts iterative manner to obtain the Mean Speed of user in current TTI.

WPF dispatching algorithm is the half-way house of RR (poll) algorithm that the poorest maximum C/I (carrier/interface ratio) algorithm of fairness and fairness are the strongest, adjusts fairness and throughput of system by adjusting α.α is larger, and fairness is poorer, and throughput of system is higher, more levels off to maximum C/I algorithm, otherwise fairness is better, and throughput of system is low, more levels off to RR (poll) algorithm of throughput justice.

But APE characteristic requires the maximum that ensures resource to use at scheduling strategy, the method of existing definite momentary rate is only considered channel quality and two factors of radio interface rate of user, do not consider the resource factors that each user can use, be to affect radio interface rate in the base station of not supporting APE characteristic; But introduce after APE characteristic base station, if adopt existing method to determine instantaneous code check value, does not consider the resource that user can use, and there will be following problem in the time that dispatched users is sorted:

The time interval resource of supporting the APE user of multiple ascending time slots to use in a subframe is many, therefore while transmitting data, Mean Speed value is larger, but instantaneous code check value is only considered channel quality and two factors of radio interface rate of user, compared with the dispatching priority calculating before not supporting APE characteristic, instantaneous code check value is constant, it is large that Mean Speed value becomes, now cause SDL value to reduce, therefore, the APE user that available resources are many can not get priority scheduling, and the relatively less user of other available resources obtains priority scheduling on the contrary, thereby time interval resource is wasted, the throughput of eating dishes without rice or wine can not get promoting.

Summary of the invention

The invention provides a kind of user scheduling method and device of TD-SCDMA system of supporting APE that be applied to, be wasted and cause eating dishes without rice or wine the problem that throughput do not promote in order to solve time interval resource in prior art.

The invention provides a kind of user scheduling method that is applied to the TD-SCDMA system of supporting APE, comprising:

While arriving dispatching cycle, determine Mean Speed and the instantaneous code check of dispatched users, wherein obtain the instantaneous code check of dispatched users by the initial bit rate of the signal to noise ratio mapping of dispatched users being multiplied by the time interval resource factor of influence β of dispatched users, the β of described dispatched users and the TS of dispatched users _numbe directly proportional, the TS of described dispatched users _numfor in current dispatching cycle, the maximum E-PUCH time interval resource sum that dispatched users can take;

According to the Mean Speed of dispatched users and instantaneous code check, adopt WPF dispatching algorithm to determine the scheduling reference value SDL ' of dispatched users, wherein, the dispatching priority of the dispatched users that SDL ' is larger is higher;

According to the SDL ' of each dispatched users of determining, each dispatched users is dispatched.

The present invention also provides a kind of user dispatching device that is applied to the TD-SCDMA system of supporting APE, comprising:

Parameter determining unit, while being used for arriving dispatching cycle, determine Mean Speed and the instantaneous code check of dispatched users, wherein obtain the instantaneous code check of dispatched users by the initial bit rate of the signal to noise ratio mapping of dispatched users being multiplied by the time interval resource factor of influence β of dispatched users, the β of described dispatched users and the TS of dispatched users _numbe directly proportional, the TS of described dispatched users _numfor in current dispatching cycle, the maximum E-PUCH time interval resource sum that dispatched users can take;

Priority determining unit, for according to the Mean Speed of dispatched users and instantaneous code check, adopts WPF dispatching algorithm to determine the scheduling reference value SDL ' of dispatched users, and wherein, the dispatching priority of the dispatched users that SDL ' is larger is higher;

Scheduling unit, for dispatching each dispatched users according to the SDL ' of each dispatched users of determining.

Utilize user scheduling method and the device beneficial effect of the TD-SCDMA system that is applied to support APE provided by the invention as follows: in TD-SCDMA system, for the momentary rate of WPF dispatching algorithm institute foundation, introduce after APE characteristic, for different users, the factor that determines momentary rate not only comprises the code check that embodies current channel quality, user can with E-PUCH time interval resource also play vital effect, the present invention has realized the WPF dispatching algorithm optimization of APE characteristic, ensures on the one hand the correctness of the momentary rate calculating of domestic consumer; On the other hand, consider for the user who meets APE characteristic the E-PUCH time interval resource that it is available, improve its dispatching priority, thereby improve preferably the base station data throughout of eating dishes without rice or wine, obviously promote user's uplink service perception.

Brief description of the drawings

Fig. 1 follows channel twice frame to divide multiplexing schematic diagram in prior art;

Fig. 2 is the user scheduling method flow chart that is applied to the TD-SCDMA system of supporting APE in the embodiment of the present invention;

Fig. 3 is the user scheduling method flow chart that is applied to the TD-SCDMA system of supporting APE in another embodiment of the present invention;

Fig. 4 is the user dispatching device structure chart that is applied to the TD-SCDMA system of supporting APE in the embodiment of the present invention.

Embodiment

Below in conjunction with drawings and Examples, user scheduling method and the device that is applied to the TD-SCDMA system of supporting APE provided by the invention illustrated in greater detail.

In TD-SCDMA system, introduce after APE characteristic, the multiple ascending time slots of APE User support, its Mean Speed is higher, according to existing dispatching method, because momentary rate only determines that according to channel quality signal to noise ratio is definite, therefore its SDL value that participates in scheduling reduces on the contrary, cause its dispatcher to reduce, cause radio interface rate not promote.

In TD-SCDMA system, WPF dispatching algorithm need to be according to user's instantaneous code check, system is introduced after APE characteristic, for different users, the factor that determines instantaneous code check not only comprises the signal to noise ratio that embodies current channel quality, user can with E-PUCH time interval resource also play vital effect.The embodiment of the present invention provides a kind of user scheduling method that is applied to the TD-SCDMA system of supporting adaptive predictive encoding APE, as shown in Figure 2, mainly comprises the following steps:

Step 201, while arriving dispatching cycle, determine Mean Speed and the instantaneous code check of dispatched users, wherein obtain the instantaneous code check of dispatched users by the initial bit rate of the signal to noise ratio mapping of dispatched users being multiplied by the time interval resource factor of influence β of dispatched users, the β of described dispatched users and the TS of dispatched users _numbe directly proportional, the TS of described dispatched users _numfor in current dispatching cycle, the maximum E-PUCH time interval resource sum that dispatched users can take;

Be the chronomere of RRM dispatching cycle, and the present embodiment is called TTI, and the length of TTI equals the length of subframe conventionally.

Every arrival dispatching cycle, first need to determine all users that need to dispatch in this dispatching cycle, embodiment of the present invention method is applied to the TD-SCDMA system of supporting APE, therefore the user that dispatched comprises two kinds of situations: if open APE characteristic, all dispatched users are the user's (being APE user) who adopts APE; All dispatched users comprise APE user and domestic consumer, and domestic consumer is the user who does not adopt APE; If close APE characteristic, all dispatched users are domestic consumer.

The difference of APE user and domestic consumer is: this APE user's E-PUCH can share time interval resource transmission with the HS-SICH of another APE CU, meet empty point condition under certain condition, this APE user's E-PUCH can share time interval resource transmission with the HS-SICH of this APE CU.Shared time interval resource refers to take identical code channel resource.

The present embodiment is for dispatched users, first determine Mean Speed and the momentary rate of WPF dispatching algorithm institute foundation, wherein determining when momentary rate, not only consider the code check that the signal to noise ratio of dispatched users is shone upon, also consider the time interval resource factor of influence β of dispatched users.

Step 202, according to the Mean Speed of dispatched users and instantaneous code check, adopts WPF dispatching algorithm to determine the scheduling reference value SDL ' of dispatched users, and wherein, the dispatching priority of the dispatched users that SDL ' is larger is higher;

The formula of the mode of concrete calculating SDL ', can existing formula.

Step 203, dispatches each dispatched users according to the SDL ' of each dispatched users of determining.

The user scheduling method that the embodiment of the present invention provides, for supporting the TD-SCDMA system of APE, parameter in existing weighting direct ratio justice (Weight PF) dispatching algorithm is determined and is optimized,, in the situation that base station (NodeB) supports the configuration of APE characteristic, ensure on the one hand the correctness of the momentary rate calculating of domestic consumer; On the other hand, consider for the user who meets APE characteristic the E-PUCH time interval resource that it is available, improve its dispatching priority, thereby improve preferably the base station data throughout of eating dishes without rice or wine, obviously promote user's uplink service perception.

By the embodiment of the present invention, realize the WPF dispatching algorithm optimization of APE characteristic, promote the throughput of eating dishes without rice or wine of uplink service.APE characteristic is incorporated into after NodeB, and the concrete account form of WPF dispatching algorithm is not affected, if APE characteristic is not opened in base station, result of calculation is also correct, has realized APE characteristic dispatching algorithm to not supporting the seamless compatibility of APE characteristic base station software.

In the embodiment of the present invention, the time interval resource factor of influence β of dispatched users and the TS of dispatched users _numbe directly proportional, therefore, the concrete value of the β of dispatched users, according to the TS of dispatched users _numvalue is determined, as long as meet proportional relation, just can be reached correspondingly effect.Preferably, the β of dispatched users specifically equals the TS of described dispatched users _num.Current, the β value of dispatched users, can be also the TS of dispatched users _numsquare, add set positive number, deduct set positive number, be multiplied by set positive number, divided by setting the numerical value obtaining after the computing such as positive number.

Provide the preferred embodiment that the present invention is applied to the user scheduling method of the TD-SCDMA system of supporting APE below.

The present embodiment preferably starts scheduling processing flow by the MAC-e module for user's scheduling of base station by clocked flip, first scheduling processing flow arranges schedulable time interval resource in this TTI and (is specially code channel resource, a time slot comprises multiple code channels), power resource, deposit the resource table under frequency in.Afterwards, as shown in Figure 3, carry out following process:

Step 301, first obtains the frequency under the community of BTS management;

Step 302, determines whether to travel through all frequencies under complete primary school district, if so, performs step 306, otherwise execution step 303 starts scheduling handling process;

Step 303, calculates the E-PUCH time interval resource sum that under the frequency not traveling through, all dispatched users can be used, and calculates the TS of dispatched users _num;

Step 304, calculates the parameter in WPF dispatching algorithm, particularly, calculates all speed of instantaneous code check peace of dispatched users, in the time calculating instantaneous code check, considers and TS _numthe time interval resource factor of influence β being directly proportional;

Step 305, sorts to dispatched users according to WPF dispatching algorithm, if the scheduling reference value SDL ' of the dispatched users of calculating is larger, its dispatching priority is higher;

Step 306, illustrates the sequence that completes all dispatched users, according to the sequence of dispatched users, dispatched users is dispatched.

Visible in scheduling handling process, need to be according to different dispatching algorithms, upgrade the parameter value that calculates dispatching algorithm, for the present embodiment, upgrade exactly the parameter of WPF dispatching algorithm: instantaneous code check DRC, Mean Speed R, the newly-increased time interval resource factor of influence β of the present embodiment, also need in addition to upgrade fair factor of influence α, α upgrades and adopts current mechanism to upgrade, and upgrade for other parameter, preferably in the following way.

(1) renewal of the instantaneous code check of each dispatched users

The parameter relevant with instantaneous channel quality not only has SNR, and path loss L _metricindirectly embody the channel situation of dispatched users, UPH (UE Power Headroom, the maximum transmission power that UE can use and reference value P _ebaseratio) embody dispatched users and use the maximum transmission power signal to noise ratio that can reach, consider the actual maximum S/N R that can reach of UE and SNPL (Serving and Neighbour Cell Pathloss, Serving cell and adjacent cell path loss), UPH, maximal rate have relation, simultaneously, also consider with the present embodiment in newly-increased time interval resource factor of influence β have relation, therefore the calculating of the instantaneous code check DRC of dispatched users need to consider these factors, and concrete deterministic process is as follows:

1) the path loss L reporting according to dispatched users the last time _metricdetermine reference power P _roT; P _roTthat base station is according to the L of reporting of user _metricthe user's who estimates maximum transmission power, preferably can determine in the following way:

$P_{\mathrm{RoT}}=\frac{{\mathrm{RoT}}_{\mathrm{total},\mathrm{ini}}}{1+\frac{1}{\text{LMetric}}}$

RoT _{total, ini}total RoT (interference relative thermal noise power) resource that is high-rise configuration deducts DPCH (Dynamic Host Configuration Protocol, DHCP) and the non-scheduled RoT taking after, according to set rule convert linear value RoT to _{total, ini}(unit is W or mW).

Further, the maximum transmission power of user's use of estimating and the reference value P of configuration are determined in base station _ebaseratio:

$\frac{P_{\mathrm{RoT}}}{P_{\mathrm{ebase}}}.$

2) the power maximum P reporting according to dispatched users the last time _maxdetermine reference power UPH;

According to P _maxand L _metriccan determine the maximum transmission power that dispatched users can be used, UPH is maximum transmission power and the reference value P that dispatched users can be used _ebaseratio, particularly,

$\mathrm{UPH}=\frac{P_{\max }}{P_{\mathrm{ebase}}\·L_{\mathrm{Metric}}}.$

3) determine $P_{\mathrm{thd}}=\min (\frac{P_{\mathrm{RoT}}}{P_{\mathrm{ebase}}},\mathrm{UPH});$

4) according to definite P _thdand the minimal frequency spreading factor SF corresponding to resource of scheduling _mindetermine interim signal to noise ratio snr _temp;

Can determine corresponding which spreading factor SF according to the resource (total resource deducts DPCH and the non-scheduled resource taking after resource) of scheduling, preferably, get wherein minimum spreading factor and determine in the following way interim signal to noise ratio snr _temp:

If ${\mathrm{SNR}}_{\mathrm{temp}}=\frac{(P_{\mathrm{thd}}\·\frac{{\mathrm{SF}}_{\min }}{16})}{{\mathrm{\Δ}}_{\mathrm{harq}}},$

Δ _harqfor the relevant deviant of power of configuration.

5) determine signal to noise ratio snr=min (SNR of dispatched users _temp, CIR _th2), wherein, CIR _th2for the signal to noise ratio corresponding to the highest code check of the dispatched users of high level configuration;

According to the corresponding relation of normalization code check and signal to noise ratio, CIR _th1and CIR _th2the respectively dispatched users of corresponding high-rise configuration minimum and signal to noise ratio that the highest code check is corresponding, CIR _th2when configuration, consider the ability of dispatched users, concrete configuration mode can adopt existing mode, no longer describes in detail here.

6) signal to noise ratio snr of definite dispatched users is mapped as to initial bit rate V;

Specifically can adopt existing mode to shine upon, here not detailed detailed process.

7) the time interval resource factor of influence β that V is multiplied by dispatched users obtains the instantaneous code check DRC of dispatched users, and preferably, in the present embodiment, the β of dispatched users equals the TS of dispatched users _num,

DRC＝V×TS _num

(2) renewal of the Mean Speed of dispatched users

The Mean Speed of determining dispatched users, specifically comprises:

$R\left(i\right)=(1-\frac{1}{T_c})R(i-1)+\frac{1}{T_c}\×\mathrm{Bit}\_\mathrm{Rate}\_\mathrm{of}\_\mathrm{Last}\_\mathrm{TTI}$

Wherein, R (i) represents the Mean Speed of dispatched users in current TTI, by current TTI forward several the 2nd TTI be dispatched users distribute the bit number carrying obtain R (i-1) divided by TTI length, Bit_Rate_of_Last_TTI be current TTI forward several the 1st TTI be dispatched users distribute the bit number carrying, T _cfor timing statistics window, length is TTI integral multiple.

Bit_Rate_of_Last_TTI is not the size of data in dispatched users reporting MAC-e PDU, but network side estimates dispatched users and will send the size of data, and when dispatched users is not when before current TTI, the 1st TTI obtains dispatching, this value is 0.Object is to prevent that certain user from taking resource always and not putting.

In another preferred embodiment of the present invention, while arriving dispatching cycle, judge whether dispatched users is the first user who participates in scheduling, before, whether dispatched by network side, determining while not being the first dispatched users that participates in scheduling, determine according to the method described above again Mean Speed and the instantaneous code check of dispatched users, adopt WPF dispatching algorithm to determine the SDL ' of dispatched users, and the dispatched users of dispatching for first participation, the SDL ' of dispatched users is set for being greater than the initial value of setting threshold, to ensure when initial that each user can once be dispatched, concrete initial value can be configured with reference to HSDPA.After once being dispatched, user just starts according to above-mentioned new mechanism Mean Speed and DRC equivalence.

Preferably, in the embodiment of the present invention, adopt WPF dispatching algorithm to determine the scheduling reference value SDL ' of each dispatched users, specifically comprise:

${\mathrm{SDL}}^{\′}={\mathrm{DRC}}_j{\left(t\right)}^{\mathrm{\α}}\·\frac{{\mathrm{DRC}}_j\left(t\right)}{R_j\left(t\right)}$

Wherein, DRC _j(t) be the instantaneous code check of dispatched users j, α is the fair factor of influence arranging, R _j(t) be the Mean Speed of dispatched users, j=1 ... k, the dispatched users sum that k is current dispatching cycle.

The scheduling reference value that is the user that is scheduled of current override is:

$\mathrm{SDL}=\underset{j=1,...,k}{\arg \max }\{V_j{\left(t\right)}^{\mathrm{\α}}\·\frac{{\mathrm{DRC}}_j\left(t\right)}{R_j\left(t\right)}\·{\mathrm{\β}}_j\left(t\right)\}$

Wherein, V _j(t) be the initial bit rate of determining according to the method described above dispatched users j, β _j(t) be the time interval resource factor of influence of dispatched users j, preferably get the TS of dispatched users j _num, be expressed as TS _numj(t).

Therefore in the fair WPF algorithm of weighting direct ratio, introduce the factor of resource.Under non-APE characteristic, think and be equivalent to not consider TS by the maximum resource number identical (i.e. the maximum E-PUCH time interval resource number of configuration) that each UE can use _numj(t) PF algorithm.

Before the schedule process module of network side is upgraded dispatching algorithm parameter in the present embodiment, calculate all available E-PUCH timeslot numbers that can dispatched users in this TTI, by the V of WPF algorithm _j(t) value is multiplied by TS _numj(t), as the molecule of dispatching algorithm, embody APE characteristic, if APE characteristic is closed, the time interval resource number that the E-PUCH of all TTI can use is identical, does not also affect the ranking results of WPF dispatching algorithm.

As previously mentioned, for the base station of opening APE characteristic, this APE user's E-PUCH can share time interval resource transmission with the HS-SICH of another APE CU, meet empty point condition under certain condition, this APE user's E-PUCH can share time interval resource transmission with the HS-SICH of this APE CU.Preferably, in the present embodiment, for the dispatched users that adopts APE, determine the TS of described dispatched users _num, specifically comprise: determine in current dispatching cycle the E-PUCH time interval resource sum TS that does not share time interval resource with high-speed shared information channel HS-SICH that dispatched users can take _num1; Determine in current dispatching cycle dispatched users E-PUCH time interval resource sum TS that can take and the shared time interval resource of HS-SICH _num2; To TS _num1and TS _num2summation obtains the TS of described dispatched users _num.

In TTI, HS-SICH channel is generally multiple, and the code channel resource difference of different HS-SICH channel occupancies preferably, is determined in the present embodiment in current dispatching cycle, E-PUCH time interval resource sum TS dispatched users and the shared time interval resource of HS-SICH _num2, specifically comprise:

Determine all activated HS-SICH, for the HS-SICH of each activation, if dispatched users takies this HS-SICH in current dispatching cycle, and this HS-SICH and E-PUCH do not meet empty point condition, determine in current dispatching cycle, dispatched users can not take the E-PUCH that shares time interval resource with this HS-SICH, otherwise, determine in current dispatching cycle, dispatched users can take the E-PUCH that shares time interval resource with this HS-SICH;

The E-PUCH time interval resource summation with the shared time interval resource of each HS-SICH that can take in current dispatching cycle according to definite dispatched users obtains TS _num2.

Preferably, embodiment of the present invention method is applied to spaced antenna scene or smart antenna scene.

One, spaced antenna scene

Under spaced antenna scene, the antenna channels that different CUs is different, MAC-e judges according to antenna ownership the time interval resource whether each dispatched users can take with HS-SICH, concrete mode is to travel through all activated HS-SICH; The code channel resource that definite HS-SICH activating takies; For the HS-SICH of each activation, determine whether scheduled user takies this HS-SICH, if scheduled user takies, determine that HS-SICH takies the antenna channels that this dispatched users is used; Because the E-PUCH of this dispatched users also transmits in this antenna channels, therefore this HS-SICH and E-PUCH do not meet empty point condition, can not on the code channel resource at this HS-SICH channel place, dispatch this user by E-PUCH, otherwise can.

Two, smart antenna scene

Under smart antenna scene, all users use an antenna channels, if therefore HS-SICH scheduled user takies, this HS-SICH and E-PUCH do not meet empty point condition.Concrete scheduling mode is: travel through all activated HS-SICH; The code channel resource that definite HS-SICH activating takies; For the HS-SICH of each activation, determine whether scheduled user takies this HS-SICH, if scheduled user takies, whether the RL_ID that determines the dispatched users that takies this HS-SICH is identical with the RL_ID of current scheduling user, if identical, can not on the code channel resource at this HS-SICH channel place, dispatch this user by E-PUCH, on the contrary can.

Based on same inventive concept, the user dispatching device of the TD-SCDMA system of a kind of APE of support is also provided in the embodiment of the present invention, because the principle that this device is dealt with problems is similar to the user scheduling method of the TD-SCDMA system of a kind of APE of support, therefore the enforcement of this device can be referring to the enforcement of method, repeats part and repeat no more.

A kind of user dispatching device that is applied to the TD-SCDMA system of supporting adaptive predictive encoding APE that the embodiment of the present invention provides, as shown in Figure 4, comprising:

Parameter determining unit 401, while being used for arriving dispatching cycle, determine Mean Speed and the instantaneous code check of dispatched users, wherein obtain the instantaneous code check of dispatched users by the initial bit rate of the signal to noise ratio mapping of dispatched users being multiplied by the time interval resource factor of influence β of dispatched users, the β of described dispatched users and the TS of dispatched users _numbe directly proportional, the TS of described dispatched users _numfor in current dispatching cycle, the maximum E-PUCH time interval resource sum that dispatched users can take;

Priority determining unit 402, for according to the Mean Speed of dispatched users and instantaneous code check, adopts WPF dispatching algorithm to determine the scheduling reference value SDL ' of dispatched users, and wherein, the dispatching priority of the dispatched users that SDL ' is larger is higher;

Scheduling unit 403, for dispatching each dispatched users according to the SDL ' of each dispatched users of determining.

Preferably, described parameter determining unit 401, for the dispatched users that adopts adaptive predictive encoding APE, is determined the TS of described dispatched users _num, specifically comprise:

Determine in current dispatching cycle the E-PUCH time interval resource sum TS that does not share time interval resource with high-speed shared information channel HS-SICH that dispatched users can take _num1;

Determine in current dispatching cycle dispatched users E-PUCH time interval resource sum TS that can take and the shared time interval resource of HS-SICH _num2;

To TS _num1and TS _num2summation obtains the TS of described dispatched users _num.

Preferably, described parameter determining unit 401, determines in current dispatching cycle, the TS of described dispatched users _num2comprise: determine all activated HS-SICH, for each HS-SICH, if dispatched users takies this HS-SICH in current dispatching cycle, and this HS-SICH and the satisfied empty point condition of E-PUCH, determine in current dispatching cycle, dispatched users can not take the E-PUCH that shares time interval resource with this HS-SICH, otherwise, to determine in current dispatching cycle, dispatched users can take the E-PUCH that shares time interval resource with this HS-SICH; The E-PUCH time interval resource summation with the shared time interval resource of each HS-SICH that can take in current dispatching cycle according to definite dispatched users obtains TS _num2.

Preferably, this application of installation is in spaced antenna scene or smart antenna scene.

Preferably, while arriving dispatching cycle, for not being the first dispatched users that participates in scheduling, parameter determining unit 401 is determined Mean Speed and the instantaneous code check of dispatched users, priority determining unit 402 adopts WPF dispatching algorithm to determine the SDL ' of dispatched users, for the dispatched users of first participation scheduling, priority determining unit 402 arranges the SDL ' of dispatched users for being greater than the initial value of setting threshold.

Preferably, priority determining unit adopts WPF dispatching algorithm to determine the scheduling reference value SDL ' of each dispatched users, specifically comprises:

${\mathrm{SDL}}^{\′}={\mathrm{DRC}}_j{\left(t\right)}^{\mathrm{\α}}\·\frac{{\mathrm{DRC}}_j\left(t\right)}{R_j\left(t\right)}$

Wherein, DRC _j(t) be the instantaneous code check of dispatched users j, α is the fair factor of influence arranging, R _j(t) be the Mean Speed of dispatched users, j=1 ... k, the dispatched users sum that k is current dispatching cycle.

Preferably, parameter determining unit is determined the instantaneous code check of dispatched users, specifically comprises:

Determine reference power P according to the path loss that dispatched users the last time reports _roT;

The power maximum P reporting according to dispatched users the last time _maxdetermine reference power UPH;

Determine $P_{\mathrm{thd}}=\min (\frac{P_{\mathrm{RoT}}}{P_{\mathrm{ebase}}},\mathrm{UPH}),$ Wherein P _ebasefor the reference value of configuration;

According to definite P _thdand the minimal frequency spreading factor SF corresponding to resource of scheduling _mindetermine interim signal to noise ratio snr _temp;

Determine signal to noise ratio snr=min (SNR of dispatched users _temp, CIR _th2), wherein, CIR _th2for the signal to noise ratio corresponding to the highest code check of the dispatched users of high level configuration;

The signal to noise ratio of dispatched users is mapped as to initial bit rate, and the time interval resource factor of influence β that described initial bit rate is multiplied by dispatched users obtains the instantaneous code check of dispatched users.

Preferably, parameter determining unit 401 is determined the Mean Speed of dispatched users, specifically comprises:

$R\left(i\right)=(1-\frac{1}{T_c})R(i-1)+\frac{1}{T_c}\×\mathrm{Bit}\_\mathrm{Rate}\_\mathrm{of}\_\mathrm{Last}\_\mathrm{TTI}$

Wherein, R (i) represents the Mean Speed of dispatched users in current dispatching cycle, by current dispatching cycle forward several the 2nd dispatching cycles be dispatched users distribute the bit number carrying divided by dispatching cycle length obtain R (i-1), Bit_Rate_of_Last_TTI be current dispatching cycle forward several the 1st dispatching cycles be dispatched users distribute the bit number carrying, T _cfor timing statistics window, length is integral multiple dispatching cycle.

Those skilled in the art should understand, embodiments of the invention can be provided as method, system or computer program.Therefore, the present invention can adopt complete hardware implementation example, completely implement software example or the form in conjunction with the embodiment of software and hardware aspect.And the present invention can adopt the form at one or more upper computer programs of implementing of computer-usable storage medium (including but not limited to magnetic disc store, CD-ROM, optical memory etc.) that wherein include computer usable program code.

The present invention is with reference to describing according to flow chart and/or the block diagram of the method for the embodiment of the present invention, equipment (system) and computer program.Should understand can be by the flow process in each flow process in computer program instructions realization flow figure and/or block diagram and/or square frame and flow chart and/or block diagram and/or the combination of square frame.Can provide these computer program instructions to the processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing device to produce a machine, the instruction that makes to carry out by the processor of computer or other programmable data processing device produces the device for realizing the function of specifying at flow process of flow chart or multiple flow process and/or square frame of block diagram or multiple square frame.

These computer program instructions also can be stored in energy vectoring computer or the computer-readable memory of other programmable data processing device with ad hoc fashion work, the instruction that makes to be stored in this computer-readable memory produces the manufacture that comprises command device, and this command device is realized the function of specifying in flow process of flow chart or multiple flow process and/or square frame of block diagram or multiple square frame.

These computer program instructions also can be loaded in computer or other programmable data processing device, make to carry out sequence of operations step to produce computer implemented processing on computer or other programmable devices, thereby the instruction of carrying out is provided for realizing the step of the function of specifying in flow process of flow chart or multiple flow process and/or square frame of block diagram or multiple square frame on computer or other programmable devices.

Although described the preferred embodiments of the present invention, once those skilled in the art obtain the basic creative concept of cicada, can make other change and amendment to these embodiment.So claims are intended to be interpreted as comprising preferred embodiment and fall into all changes and the amendment of the scope of the invention.

Obviously, those skilled in the art can carry out various changes and modification and not depart from the spirit and scope of the present invention the present invention.Like this, if these amendments of the present invention and within modification belongs to the scope of the claims in the present invention and equivalent technologies thereof, the present invention is also intended to comprise these changes and modification interior.

Claims (15)

1. a user scheduling method that is applied to the TD-SCDMA system of supporting adaptive predictive encoding APE, is characterized in that, comprising:

While arriving dispatching cycle, determine Mean Speed and the instantaneous code check of dispatched users, wherein obtain the instantaneous code check of dispatched users by the initial bit rate of the signal to noise ratio mapping of dispatched users being multiplied by the time interval resource factor of influence β of dispatched users, the β of described dispatched users and the TS of dispatched users _numbe directly proportional, the TS of described dispatched users _numfor in current dispatching cycle, the maximum E-PUCH time interval resource sum that dispatched users can take;

According to the Mean Speed of dispatched users and instantaneous code check, adopt the fair WPF dispatching algorithm of weighting direct ratio to determine the scheduling reference value SDL' of dispatched users, wherein, the dispatching priority of the dispatched users that SDL' is larger is higher;

According to the SDL' of each dispatched users of determining, each dispatched users is dispatched;

Adopt WPF dispatching algorithm to determine the scheduling reference value SDL' of each dispatched users, specifically comprise:

${\mathrm{SDL}}^{\′}={\mathrm{DRC}}_j{\left(t\right)}^{\mathrm{\α}}\·\frac{{\mathrm{DRC}}_j\left(t\right)}{R_j\left(t\right)}$

Wherein, DRC _j(t) be the instantaneous code check of dispatched users j, α is the fair factor of influence arranging, R _j(t) be the Mean Speed of dispatched users, j=1 ... k, the dispatched users sum that k is current dispatching cycle.

2. the method for claim 1, is characterized in that, the β of described dispatched users equals the TS of described dispatched users _num.

3. the method for claim 1, is characterized in that, for the dispatched users that adopts adaptive predictive encoding APE, determines the TS of described dispatched users _num, specifically comprise:

Determine in current dispatching cycle the E-PUCH time interval resource sum TS that does not share time interval resource with high-speed shared information channel HS-SICH that dispatched users can take _num1;

Determine in current dispatching cycle dispatched users E-PUCH time interval resource sum TS that can take and the shared time interval resource of HS-SICH _num2;

To TS _num1and TS _num2summation obtains the TS of described dispatched users _num.

4. method as claimed in claim 3, is characterized in that, determines in current dispatching cycle, E-PUCH time interval resource sum TS dispatched users and the shared time interval resource of HS-SICH _num2, comprising:

Determine all activated HS-SICH, for each HS-SICH, if dispatched users takies this HS-SICH in current dispatching cycle, and this HS-SICH and E-PUCH do not meet empty point condition, determine in current dispatching cycle, dispatched users can not take the E-PUCH that shares time interval resource with this HS-SICH, otherwise, determine in current dispatching cycle, dispatched users can take the E-PUCH that shares time interval resource with this HS-SICH;

The E-PUCH time interval resource summation with the shared time interval resource of each HS-SICH that can take in current dispatching cycle according to definite dispatched users obtains TS _num2.

5. method as claimed in claim 4, is characterized in that, the method is applied to spaced antenna scene or smart antenna scene.

6. the method as described in as arbitrary in claim 1～5, is characterized in that,

While arriving dispatching cycle, for not being the first dispatched users that participates in scheduling, determine Mean Speed and the instantaneous code check of this dispatched users, adopt WPF dispatching algorithm to determine the SDL' of this dispatched users; For the dispatched users of first participation scheduling, the SDL' that this dispatched users is set is the initial value that is greater than setting threshold.

7. the method as described in as arbitrary in claim 1～5, is characterized in that, determines the instantaneous code check of dispatched users, specifically comprises:

Determine reference power P according to the path loss that dispatched users the last time reports _roT;

The power maximum P reporting according to dispatched users the last time _maxdetermine reference power UPH;

Determine wherein P _ebasefor the reference value of configuration;

According to definite P _thdand the minimal frequency spreading factor SF corresponding to resource of scheduling _mindetermine interim signal to noise ratio snr _temp;

Determine signal to noise ratio snr=min (SNR of dispatched users _temp, CIR _th2), wherein, CIR _th2for the signal to noise ratio corresponding to the highest code check of the dispatched users of high level configuration;

The signal to noise ratio of dispatched users is mapped as to initial bit rate, and the time interval resource factor of influence β that described initial bit rate is multiplied by dispatched users obtains the instantaneous code check of dispatched users.

8. the method as described in as arbitrary in claim 1～5, is characterized in that, determines the Mean Speed of dispatched users, specifically comprises:

$R\left(i\right)=(1-\frac{1}{T_c})R(i-1)+\frac{1}{T_c}\×\mathrm{Bit}\_\mathrm{Rate}\_\mathrm{of}\_\mathrm{Last}\_\mathrm{TTI}$

Wherein, R (i) represents the Mean Speed of dispatched users in current dispatching cycle, by current dispatching cycle forward several the 2nd dispatching cycles be dispatched users distribute the bit number carrying divided by dispatching cycle length obtain R (i-1), Bit_Rate_of_Last_TTI be current dispatching cycle forward several the 1st dispatching cycles be dispatched users distribute the bit number carrying, T _cfor timing statistics window, length is integral multiple dispatching cycle.

9. a user dispatching device that is applied to the TD-SCDMA system of supporting adaptive predictive encoding APE, is characterized in that, comprising:

Parameter determining unit, while being used for arriving dispatching cycle, determine Mean Speed and the instantaneous code check of dispatched users, wherein obtain the instantaneous code check of dispatched users by the initial bit rate of the signal to noise ratio mapping of dispatched users being multiplied by the time interval resource factor of influence β of dispatched users, the β of described dispatched users and the TS of dispatched users _numbe directly proportional, the TS of described dispatched users _numfor in current dispatching cycle, the maximum E-PUCH time interval resource sum that dispatched users can take;

Priority determining unit, for according to the Mean Speed of dispatched users and instantaneous code check, adopts WPF dispatching algorithm to determine the scheduling reference value SDL' of dispatched users, and wherein, the dispatching priority of the dispatched users that SDL' is larger is higher;

Scheduling unit, for dispatching each dispatched users according to the SDL' of each dispatched users of determining;

Priority determining unit adopts WPF dispatching algorithm to determine the scheduling reference value SDL' of each dispatched users, specifically comprises:

${\mathrm{SDL}}^{\′}={\mathrm{DRC}}_j{\left(t\right)}^{\mathrm{\α}}\·\frac{{\mathrm{DRC}}_j\left(t\right)}{R_j\left(t\right)}$

Wherein, DRC _j(t) be the instantaneous code check of dispatched users j, α is the fair factor of influence arranging, R _j(t) be the Mean Speed of dispatched users, j=1 ... k, the dispatched users sum that k is current dispatching cycle.

10. device as claimed in claim 9, is characterized in that, described parameter determining unit, for the dispatched users that adopts adaptive predictive encoding APE, is determined the TS of described dispatched users _num, specifically comprise:

Determine in current dispatching cycle the E-PUCH time interval resource sum TS that does not share time interval resource with high-speed shared information channel HS-SICH that dispatched users can take _num1;

Determine in current dispatching cycle dispatched users E-PUCH time interval resource sum TS that can take and the shared time interval resource of HS-SICH _num2;

To TS _num1and TS _num2summation obtains the TS of described dispatched users _num.

11. devices as claimed in claim 10, is characterized in that, described parameter determining unit, determines in current dispatching cycle, the TS of described dispatched users _num2, comprising:

Determine all activated HS-SICH, for each HS-SICH, if dispatched users takies this HS-SICH in current dispatching cycle, and this HS-SICH and E-PUCH do not meet empty point condition, determine in current dispatching cycle, dispatched users can not take the E-PUCH that shares time interval resource with this HS-SICH, otherwise, determine in current dispatching cycle, dispatched users can take the E-PUCH that shares time interval resource with this HS-SICH;

According to determining that the E-PUCH time interval resource summation with the shared time interval resource of each HS-SICH that dispatched users can take in current dispatching cycle obtains TS _num2.

12. devices as claimed in claim 11, is characterized in that, this application of installation is in spaced antenna scene or smart antenna scene.

13. devices as described in as arbitrary in claim 9～12, is characterized in that,

While arriving dispatching cycle, for not being the first dispatched users that participates in scheduling, parameter determining unit is determined Mean Speed and the instantaneous code check of this dispatched users, priority determining unit adopts WPF dispatching algorithm to determine the SDL' of this dispatched users, for the dispatched users of first participation scheduling, the SDL' that priority determining unit arranges this dispatched users is the initial value that is greater than setting threshold.

14. devices as described in as arbitrary in claim 9～12, is characterized in that, parameter determining unit is determined the instantaneous code check of dispatched users, specifically comprises:

Determine reference power P according to the path loss that dispatched users the last time reports _roT;

The power maximum P reporting according to dispatched users the last time _maxdetermine reference power UPH;

Determine wherein P _ebasefor the reference value of configuration;

According to definite P _thdand the minimal frequency spreading factor SF corresponding to resource of scheduling _mindetermine interim signal to noise ratio snr _temp;

Determine signal to noise ratio snr=min (SNR of dispatched users _temp, CIR _th2), wherein, CIR _th2for the signal to noise ratio corresponding to the highest code check of the dispatched users of high level configuration;

The signal to noise ratio of dispatched users is mapped as to initial bit rate, and the time interval resource factor of influence β that described initial bit rate is multiplied by dispatched users obtains the instantaneous code check of dispatched users.

15. devices as described in as arbitrary in claim 9～12, is characterized in that, parameter determining unit is determined the Mean Speed of dispatched users, specifically comprises:

$R\left(i\right)=(1-\frac{1}{T_c})R(i-1)+\frac{1}{T_c}\×\mathrm{Bit}\_\mathrm{Rate}\_\mathrm{of}\_\mathrm{Last}\_\mathrm{TTI}$

Wherein, R (i) represents the Mean Speed of dispatched users in current dispatching cycle, by current dispatching cycle forward several the 2nd dispatching cycles be dispatched users distribute the bit number carrying divided by dispatching cycle length obtain R (i-1), Bit_Rate_of_Last_TTI be current dispatching cycle forward several the 1st dispatching cycles be dispatched users distribute the bit number carrying, T _cfor timing statistics window, length is integral multiple dispatching cycle.