CN102300247A - Optimal selection method, device and system for main carrier - Google Patents

Abstract

The invention discloses an optimal selection method for a main carrier. The method mainly comprises the following steps of: in the conservation process of UE, reporting the Q value of each service cell in a region where the UE is positioned at present to an RNC (Radio Network Controller) in real time; reselecting a main service cell of the UE according to the Q value of each service cell acquired in real time by using the RNC; and redistributing the main carrier of the UE to a main carrier surface where the reselected main service cell is positioned. The invention further discloses an optimal selection device and system for the main carrier. According to the invention, each piece of UE in a multi-carrier working mode can obtain optimal configuration of the main carrier in real time in the conversion process without performing out-frequency measurement, so that the data transmission performance of the UE and the network throughput are enhanced, the capacity limitation of a multi-carrier system is better approached, reselection of the main service cell is finished in time, and situations such as call drop and the like are avoided effectively.

Description

A kind of main carrier optimized choice method and device, system

Technical field

The present invention relates to the multi-carrier transmission technology of wireless communication system, relate in particular to a kind of main carrier optimized choice method and device, system.

Background technology

Between network element A and the network element B,,, need a plurality of carrier waves of configuration in order to increase data transmission rate in certain communication period.Individual carrier wave sends network element B to the signal of network element A by N (N＞1), and the signal of network element B sends network element A to by the individual carrier wave of M (M＞1) simultaneously.In N the carrier wave of network element A, if certain carrier transmission the signal of all or part of carrier wave of control network element A, perhaps transmitting the signal of controlling all or part of carrier wave of network element B, perhaps by certain specific relation constraint, this carrier wave is called as the main carrier of network element A to network element B, and other carrier waves outside this main carrier are defined as the auxilliary carrier wave of network element A to network element B.

When network element A and network element B communicated, the transmission of network data can be subjected to the influence that network element A selects to the up main carrier of network element A to downlink main carrier to carry and the network element B of network element B.If network element A selects appropriately to the main carrier of network element A to network element B and network element B, all can be more favourable to the data transmission performance that improves between network entire throughput and network element A, B, otherwise, then unfavorable.The main carrier optimized choice just is meant: how dynamically to make network select an only carrier wave as main carrier from a plurality of carrier waves, to help improving the data transmission performance between network entire throughput and the network element.

In third generation partner program (3GPP), the up main carrier of transmission data and downlink main carrier to carry pairing are used between the network element, and upstream auxiliary carriers and a certain descending auxilliary carrier wave pairing are used.At present, in 3GPP, following three kinds of multicarrier network link access technologies have been proposed successively:

First kind, two carrier wave high-speed downlink packet insert between (DC-HSDPA) technology: upstream network element NodeB and the downstream network element terminal (UE) and have disposed 2 descending carriers, the descending carrier that matches mutually with High-Speed Dedicated Physical Control Channel (HS-DPCCH) up main carrier of living in it is a downlink main carrier to carry, another descending carrier is descending auxilliary carrier wave, NodeB can transmit two data on the HS-DSCH transmission channel simultaneously, so downlink data rate is the twice of single carrier high speed downlink packet access technology (SC-HSDPA) approximately just.For DC-HSDPA, face linchpin in NodeB sector has two sub-districts on the carrier wave face, in the sub-district on the main carrier face, data up-downgoing high-speed transfer is arranged; And in the sub-district on the auxilliary carrier wave face, have only the data downstream high-speed transfer.As shown in Figure 1, UE is operated in sub-district Cell0-C and the inside of the sub-district Cell1-C on the auxilliary carrier wave face on the main carrier face, wherein, data up-downgoing high-speed transfer is arranged in the Cell0-C of sub-district, and have only the data downstream high-speed transfer in the Cell1-C of sub-district.

Second kind, two carrier wave High Speed Uplink Packet insert (DC-HSUPA) technology, and this technology has further disposed up main carrier and upstream auxiliary carriers between downstream network element UE and upstream network element NodeB on the basis of the existing two carrier wave configurations of DC-HSDPA.Under the state that 2 up-link carriers activate simultaneously, UE can transmit two data on the E-DCH transmission channel simultaneously, so uplink data rate is the twice of SC-HSUPA approximately just.For DC-HSUPA, face linchpin in NodeB sector has two sub-districts on the carrier wave face.In the sub-district on the main carrier face, data up-downgoing high-speed transfer is arranged; In the sub-district on the auxilliary carrier wave face, data up-downgoing high-speed transfer is arranged also.As shown in Figure 2, UE is operated in the sub-district Cell0-C and the sub-district Cell1-C on the auxilliary carrier wave face on the main carrier face, and data up-downgoing high-speed transfer is arranged in the Cell0-C of sub-district, and data up-downgoing high-speed transfer is also arranged in the Cell1-C of sub-district.

The third, four carrier wave high speed downlink packet insert (4C-HSDPA) technology, the descending carrier maximum number of this technology expands 4 configuration to, at this moment, on the basis of DC-HSUPA or the existing two carrier wave configurations of DC-HSDPA, two additional descending auxilliary carrier waves have further been disposed between downstream network element UE and the upstream network element NodeB.Under the state that 4 descending carriers activate simultaneously, NodeB can transmit four data on the HS-DSCH transmission channel simultaneously, so downlink data rate just approximately is four times of SC-HSDPA.Simultaneously, under the state that 2 up-link carriers also activate simultaneously, UE can transmit two data on the E-DCH transmission channel simultaneously, so uplink data rate is the twice of SC-HSUPA approximately just.For 4C-HSDPA, the face linchpin of NodeB sector has 4 sub-districts on the carrier wave face, there is data up-downgoing high-speed transfer sub-district on the main carrier face, there is the data downstream high-speed transfer sub-district on auxilliary carrier wave face, if on certain auxilliary carrier wave face upstream auxiliary carriers is arranged, corresponding also have a data uplink high-speed transfer.As shown in Figure 3, UE is operated in sub-district Cell0-C, the sub-district Cell1-C on the auxilliary carrier wave face 1, the sub-district Cell2-C on the auxilliary carrier wave face 2 and the sub-district Cell3-C on the auxilliary carrier wave face 3 on the main carrier face, wherein, data up-downgoing high-speed transfer is all arranged in sub-district Cell0-C, the Cell1-C, and have only the data downstream high-speed transfer among sub-district Cell2-C, the Cell3-C.

Wherein, with the zone that on behalf of the up-downgoing main carrier, the sub-district on the main carrier face serve, the zone of the auxilliary carrier service of up-downgoing is represented in the sub-district on the auxilliary carrier wave face.

At present, the optimization of main carrier in the multicarrier system, mainly realize by following process: UE is in communication process, when the signal quality of current service cell can not satisfy conversation and requires, need carry out main Serving cell gravity treatment, find main Serving cell by interior measurement or external pelivimetry frequently frequently usually, the more main Serving cell that is found be reported radio network controller (RNC, Radio Network Controller), the main carrier of the main Serving cell reprovision UE that reports according to UE of RNC.

Wherein, measure in the frequency of UE and be easier to realize, and external pelivimetry frequently often needs special compression pattern or other technologies to realize, therefore, measurement capability at UE is limited, when perhaps RNC does not allow UE to carry out measurement beyond the carrier wave face, UE often can not carry out the frequency external pelivimetry, thereby can only be in each Serving cell of current main carrier gravity treatment master Serving cell, like this, if each Serving cell of current main carrier exists descending wireless conditions relatively poor, perhaps ascending load is at congestion edge, UE just can not in time finish main Serving cell gravity treatment, finally causes call drop.

Summary of the invention

In view of this, main purpose of the present invention is to provide a kind of main carrier optimized choice method and device, system, makes UE can not in time finish main Serving cell gravity treatment in communication process to solve existing main carrier optimization method, and finally causes the problem of call drop.

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

The invention provides a kind of main carrier optimized choice method, described method comprises: radio network controller (RNC) obtains the Q value of each Serving cell in the current region of terminal (UE) in real time; According to the Q value of being obtained, the main Serving cell of the described UE of described RNC gravity treatment, and on the main carrier face that the main carrier reprovision of described UE is in to institute's gravity treatment master Serving cell.

In such scheme, the process that described RNC obtains each Serving cell Q value in the current region of UE in real time specifically comprises: described UE is in communication process, received signal code power (RSCP) value of each Serving cell in measurement in real time self region, according to measured RSCP value, calculate the Q value of each Serving cell in self region in real time, more resulting Q value is reported described RNC.

In such scheme, described UE measures the process of each Serving cell RSCP value in self region in real time, be specially: described UE periodically measures the RSCP value of each Serving cell in self region in communication process, and measured RSCP value is preserved.

In such scheme, described UE measures the cycle of each Serving cell RSCP value, is obtained from the policy control message that described RNC sends by described UE.

In such scheme, described UE is according to measured RSCP value, calculate the process of each Serving cell Q value in self region in real time, be specially: described UE is when arriving report cycle, according to the RSCP value of each Serving cell measured or that preserved, calculate the Q value of each Serving cell.

In such scheme, described report cycle is specially the integral multiple that described UE measures the cycle of each Serving cell RSCP value.

In such scheme, described report cycle is specifically obtained from the policy control message that described RNC sends by described UE.

In such scheme, described RNC is according to the Q value of being obtained, the main Serving cell of the described UE of gravity treatment, and the process on the main carrier face that the main carrier reprovision of described UE is in to institute's gravity treatment master Serving cell, specifically comprise: described RNC is in the described Q value of obtaining, select maximum Q value, if the corresponding Serving cell of maximum Q value is not the current main Serving cell of described UE, and maximum Q value is than the well predetermined threshold value of the Q value of the current main Serving cell of described UE, and the up-downgoing load of maximum Q value institute corresponding with service sub-district is all in threshold range, then that the Q value is maximum Serving cell gravity treatment is the main Serving cell of described UE, and with the main carrier reprovision to the maximum residing carrier wave face of Serving cell of this Q value, otherwise, do not carry out the gravity treatment of main Serving cell, and keep the original main carrier configuration of described UE constant.

The present invention also provides a kind of main carrier optimized choice device, and described device comprises: acquiring unit, gravity treatment unit and reprovision unit, wherein,

Acquiring unit is used for obtaining in real time the Q value of each Serving cell in the current region of UE;

The gravity treatment unit is used for the Q value obtained according to described acquiring unit, the main Serving cell of the described UE of described RNC gravity treatment;

The reprovision unit is used for main carrier reprovision with described UE to the residing main carrier face of the described gravity treatment unit gravity treatment master of institute Serving cell.

In such scheme, described device also comprises: selected cell, authentication unit, and wherein, selected cell is used for the Q value obtained at described acquiring unit, selects maximum Q value; Authentication unit, be used to verify that whether the corresponding Serving cell of the selected maximum Q value of described selected cell is whether the current main Serving cell of described UE and selected maximum Q value be better than the up-downgoing load of predetermined threshold value and selected maximum Q value institute corresponding with service sub-district whether all in threshold range than the Q value of the current main Serving cell of described UE, if, then start described gravity treatment unit and described reprovision unit, otherwise, do not start described gravity treatment unit and described reprovision unit.

The present invention also provides a kind of main carrier optimized choice system, described system comprises: RNC and UE, wherein, RNC, be used for obtaining from described UE in real time the Q value of each Serving cell in the current region of described UE, again according to the Q value obtained, the main Serving cell of the described UE of gravity treatment, and with the main carrier reprovision of described UE to the residing main carrier face of institute's gravity treatment master Serving cell.

In such scheme, described RNC comprises acquiring unit, gravity treatment unit and reprovision unit, and wherein, acquiring unit is used for the real-time Q value of obtaining each Serving cell in the current region of described UE from described UE; The gravity treatment unit is used for the Q value obtained according to described acquiring unit, the main Serving cell of the described UE of described RNC gravity treatment; The reprovision unit is used for main carrier reprovision with described UE to the residing main carrier face of the described gravity treatment unit gravity treatment master of institute Serving cell.

In such scheme, described UE comprises: measuring unit, computing unit and report the unit, and wherein, measuring unit is used for measuring the RSCP value of each Serving cell in the described UE region in real time at described UE communication process; Computing unit is used for the RSCP value according to described measuring unit measurement, calculates the Q value of each Serving cell in the described UE region in real time; Report the unit, the Q value that is used for described computing unit is obtained reports described RNC.

In such scheme, described measuring unit specifically is used for, and in described UE communication process, periodically measures the RSCP value of each Serving cell in the described UE region, and measured RSCP value is preserved.

In such scheme, described computing unit specifically is used for, and when arriving the report cycle of described UE, the RSCP value of each Serving cell that records according to described measuring unit or preserve calculates the Q value of each Serving cell.

In such scheme, described RNC also comprises: selected cell, authentication unit, and wherein, selected cell is used for the Q value obtained at described acquiring unit, selects maximum Q value; Authentication unit, be used to verify that whether the corresponding Serving cell of the selected maximum Q value of described selected cell is whether the current main Serving cell of described UE and selected maximum Q value be better than the up-downgoing load of predetermined threshold value and selected maximum Q value institute corresponding with service sub-district whether all in threshold range than the Q value of the current main Serving cell of described UE, if, then start described gravity treatment unit and described reprovision unit, otherwise, do not start described gravity treatment unit and described reprovision unit.

By main carrier optimized choice method provided by the invention and device, system, UE is in communication process, the real-time Q value of each Serving cell in RNC reports self current region, again by the Q value of RNC according to each Serving cell that obtains in real time, the main Serving cell of the described UE of gravity treatment, and on the main carrier face that the main carrier reprovision of described UE is in to institute's gravity treatment master Serving cell, like this, make each be in the UE under the multicarrier mode of operation, need not to carry out the frequency external pelivimetry, just can be in communication process, obtain distributing rationally of main carrier in real time, thereby improve the throughput of UE data transmission performance and network, approach the capacity limitation of multicarrier system better, in time finish main Serving cell gravity treatment, effectively avoid the generation of situations such as call drop.

Description of drawings

Fig. 1 is the realization schematic diagram of DC-HSDPA technology;

Fig. 2 is the realization schematic diagram of DC-HSUPA technology;

Fig. 3 is the realization schematic diagram of 4C-HSDPA technology;

Fig. 4 is the realization flow figure of main carrier optimized choice method of the present invention;

Fig. 5 is the composition structural representation of main carrier optimized choice Apparatus and system of the present invention;

Fig. 6 is the main carrier reprovision schematic diagram of a kind of application example of the present invention;

Fig. 7 is the realization flow figure of example shown in Figure 6;

Fig. 8 is the main carrier reprovision schematic diagram of the another kind of application example of the present invention;

Fig. 9 is the realization flow figure of example shown in Figure 8.

Embodiment

Basic thought of the present invention is: in the communication process of UE, UE obtains the Q value of each Serving cell in self current region in real time, and the Q value that is obtained reported RNC, the Q value of each Serving cell that RNC reports according to UE again, the main Serving cell of gravity treatment UE, and with the main carrier reprovision to the residing carrier wave face of gravity treatment Serving cell, finishing the real-time optimization of main carrier selects, effectively improve the throughput of UE data transmission performance and network, thereby make UE in communication process, can in time finish the gravity treatment of main Serving cell, and guarantee the descending wireless conditions of selected main Serving cell, and transmitting uplink data can both satisfy the needs of UE conversation, effectively avoids the generation of situations such as call drop.

A kind of main carrier optimized choice method of the present invention is applied to support the wireless communication system of multi-carrier transmission, and with reference to shown in Figure 4, this method mainly may further comprise the steps:

Step 401:RNC obtains the Q value of each Serving cell in the current region of UE in real time;

Here, the history average of the described Q value downlink wireless quality that is the sub-district.

Step 402: according to the Q value of being obtained, the main Serving cell of the described UE of described RNC gravity treatment, and on the main carrier face that the main carrier reprovision of described UE is in to institute's gravity treatment master Serving cell.

Wherein, before step 401, when initial, the configuration of the main carrier of the described UE of RNC initialization, particularly, it is a plurality of UE initialization multicarrier configurations that enter current multicarrier network that RNC adopts the mode of main carrier poll.

For example, for a n multi-carrier mode zone, network has F ₁, F ₂, F ₃..., F _nThese multicarriers can be for configuration.RNC adopts the mode of main carrier poll to dispose initial multicarrier for certain UE, particularly, enters first terminal of current multicarrier network for first, and RNC selects carrier wave F ₁Be its initial main carrier, then for first terminal, other carrier waves F ₂, F ₃..., F _nBe its auxilliary carrier wave; For second second terminal that enters current multicarrier network, RNC selects carrier wave F ₂Be its initial main carrier, other carrier waves F ₁, F ₃..., F _nBe its auxilliary carrier wave; The rest may be inferred, n n terminal that enters current multicarrier network, and RNC selects carrier wave F _nBe its initial main carrier, other carrier waves F ₁, F ₂, F ₃..., F _N-1Be the auxilliary carrier wave of n terminal, for n+1 n+1 terminal that enters current multicarrier network, RNC selects F for it ₁Be its initial main carrier, other carrier waves F ₂, F ₃..., F _nBe its auxilliary carrier wave.

Wherein, the process that described RNC obtains each Serving cell Q value in the current region of UE in real time specifically comprises: in communication process, described UE measures the received signal code power (RSCP of each Serving cell in self region in real time, Received Signal Code Power) value, according to measured RSCP value, calculate the Q value of each Serving cell in self region in real time, more resulting Q value is reported described RNC.

Particularly, described UE periodically measures the RSCP value of each Serving cell in self region in communication process, and measured RSCP value is preserved.Here, can also can dispose according to actual conditions the measuring period of RSCP value (measurement period) by obtaining in the cell of UE from measurement control (measurementcontrol) message that RNC sent.

Particularly, described UE calculates the Q value of each Serving cell according to RSCP value measured or that preserved when arriving report cycle (Reporting interval).Here, report cycle is the integral multiple of the measuring period of RSCP value, is also obtained by the cell of UE from the measurement control message that RNC sent.

Wherein, described UE is according to RSCP value measured or that preserve, and (1) calculates the Q value of a plurality of Serving cells according to the following equation,

$Q_{f_1}=a_1*\mathrm{RSCP}{\left(T_1\right)}_{f_1}+a_2*\mathrm{RSCP}{\left(T_2\right)}_{f_1}+a_3*\mathrm{RSCP}{\left(T_3\right)}_{f_1}+......{+a}_K*\mathrm{RSCP}{\left(T_K\right)}_{f_1}$

$Q_{f_2}=a_1*\mathrm{RSCP}{\left(T_1\right)}_{f_2}+a_2*\mathrm{RSCP}{\left(T_2\right)}_{f_2}+a_3*\mathrm{RSCP}{\left(T_3\right)}_{f_2}+......+a_K*\mathrm{RSCP}{\left(T_K\right)}_{f_2}---\left(1\right)$

......

$Q_{f_n}=a_1*\mathrm{RSCP}{\left(T_1\right)}_{f_n}+a_2*\mathrm{RSCP}{\left(T_2\right)}_{f_n}+a_3*\mathrm{RSCP}{\left(T_3\right)}_{f_n}+......+a_K*\mathrm{RSCP}{\left(T_K\right)}_{f_n}$

Wherein, n is the operation dimension of residing multi-carrier mode of UE such as HSDPA, also is that current main Serving cell is with the number of cells in the sector; A series of weight coefficient a ₁, a ₂..., a _KBe the preset value of UE inside, span is 0 to 1, and its algebraical sum is 1; T is measurement period, and K is the ratio of Reportinginterval and measurement period_T, is a positive integer; Wherein,

...

Be the RSCP value of each Serving cell of recording in the period 1,

...

Be the RSCP value of each Serving cell of recording in the second period ...,

...,

It is the RSCP value of each Serving cell of recording in K cycle.

In the practical application, when UE begins from conversation, counter picks up counting, and is the RSCP value of each Serving cell of period measurement with measurement period_T, and measured RSCP value is preserved, reaching K all after date, calculate the Q value of each Serving cell and report to RNC according to above-mentioned formula (1), to reflect that to RNC current main Serving cell is with the n in the sector sub-district downlink wireless quality history mean value Q, afterwards, reset and measure timer, begin the next circulation of measuring again.

Wherein, in the step 402, described RNC is according to the Q value of being obtained, the main Serving cell of the described UE of gravity treatment, and on the main carrier face that the main carrier reprovision of described UE is in to institute's gravity treatment master Serving cell, specifically comprise: described RNC is in the described Q value of obtaining, select maximum Q value, if the corresponding Serving cell of maximum Q value is not the current main Serving cell of described UE, and maximum Q value is than the well predetermined threshold value of the Q value of the current main Serving cell of described UE, and the load up and down of maximum Q value institute corresponding with service sub-district is all in threshold range, then that the Q value is maximum Serving cell gravity treatment is the main Serving cell of described UE, and with the main carrier reprovision to the maximum residing carrier wave face of Serving cell of this Q value, otherwise, do not carry out the gravity treatment of main Serving cell, and keep the original main carrier configuration of described UE constant.

During practical application, the Q of each Serving cell that RNC reports described UE carries out arrangement from big to small, then, therefrom select maximum Q value, if selected maximum Q value institute corresponding with service sub-district is not current main Serving cell, and should maximum Q value than the well threshold value R of the Q value of current main Serving cell, and up-downgoing that should maximum Q value institute corresponding with service sub-district loads on threshold value L _Up, L _DescendingUnder, should the corresponding with service sub-district gravity treatment of maximum Q value institute be the main Serving cell of described UE then, and with the main carrier reprovision to the residing carrier wave face of this Serving cell, if the Q value of the current main Serving cell of described UE is maximum, the corresponding Serving cell of perhaps selected maximum Q value does not satisfy above-mentioned requirements, then do not carry out the gravity treatment of UE master's Serving cell, keep existing main Serving cell constant, and keep the existing major-minor carrier wave configuration of described UE constant.

Here, above-mentioned threshold value R, L _Up, L _DescendingBe the preset value of RNC internal wireless resource management (RRM, RadioResource Management) handover module, can be provided with by webmaster optimization.

Need to prove that above-mentioned main carrier optimized choice process specifically can be carried out by the RRM handover module among the RNC.

The present invention also provides a kind of main carrier optimized choice device, with reference to shown in Figure 5, this device mainly comprises: acquiring unit 511, gravity treatment unit 512 and reprovision unit 513, and wherein, acquiring unit 511 is used for obtaining in real time the Q value of each Serving cell in the current region of UE; The Q value that gravity treatment unit 512 obtains according to described acquiring unit 511 again, the main Serving cell of the described UE of gravity treatment; Reprovision unit 513 at last with the main carrier reprovision of described UE to the residing main carrier face of described gravity treatment unit 512 gravity treatment masters Serving cell.

Particularly, described device can also comprise: selected cell 514, authentication unit 515, and wherein, selected cell 514 is used for the Q value obtained at described acquiring unit 511, selects maximum Q value; Authentication unit 515, be used to verify whether the corresponding Serving cell of described selected cell 514 selected maximum Q values is the current main Serving cell of described UE, and whether selected maximum Q value is than the well predetermined threshold value of the Q value of the current main Serving cell of described UE, and whether the up-downgoing load of selected maximum Q value institute corresponding with service sub-district is all in threshold range, if, then start described gravity treatment unit 512 and described reprovision unit 513, is the main Serving cell of described UE by gravity treatment unit 512 with the maximum Serving cell gravity treatment of described selected cell 514 selected Q values, and by reprovision unit 513 with the main carrier reprovision to the residing carrier wave face of gravity treatment unit 512 gravity treatment masters Serving cell; Otherwise, do not start described gravity treatment unit 512 and described reprovision unit 513, do not carry out the gravity treatment of UE master's Serving cell, keep existing main Serving cell constant, and keep the existing major-minor carrier wave configuration of described UE constant.

During practical application, main carrier optimized choice device of the present invention specifically can be realized by the RRM handover module among the RNC, perhaps also can be used as an independent module among the RNC.

In addition, the present invention also provides a kind of main carrier optimized choice system, with reference to shown in Figure 5, described system comprises: RNC_51 and UE_52, RNC_51 is used for obtaining from described UE_52 in real time the Q value of each Serving cell in the current region of described UE_52, again according to the Q value obtained, the main Serving cell of the described UE_52 of gravity treatment, and with the main carrier reprovision of described UE_52 to the residing main carrier face of institute's gravity treatment master Serving cell.

Wherein, described RNC_51 comprises main carrier optimized choice device, and acquiring unit 511 wherein specifically obtains the Q value of each Serving cell in the current region of described UE_52 from described UE_52.

Described UE_52 can comprise: measuring unit 521, computing unit 522 and report unit 523, and wherein, measuring unit 521 is used for measuring the RSCP value of each Serving cell in the UE_52 region in real time at described UE communication process; Computing unit 522 is used for the RSCP value according to described measuring unit 521 measurements, calculates the Q value of each Serving cell in the UE_52 region in real time; Report unit 523, be used for the Q value that described computing unit 522 obtains is reported described RNC_51.

Described measuring unit 521 specifically is used for, and in described UE communication process, periodically measures the RSCP value of each Serving cell in the UE_52 region, and measured RSCP value is preserved.Described computing unit specifically is used for, and when arriving the report cycle of described UE, the RSCP value of or each Serving cell preserved that record according to described measuring unit 521 calculates the Q value of each Serving cell.

Particularly, by above-mentioned main carrier optimized choice Apparatus and system provided by the present invention, finish the idiographic flow of UE main carrier optimized choice, reference is the described flow process of method above, repeats no more.

Need to prove that main carrier optimized choice method provided by the present invention and device, system can use with parallel the replenishing of other changing methods of RRM among the existing RNC, do not have alternative.

To adopt the 4C-HSDPA pattern and to have under the multicarrier network scene of two up-link carriers activation, the optimized choice of main carrier is an example, and specific implementation of the present invention is described in further details below.

Embodiment one

Network scenarios as shown in Figure 6, UE are in the 4C-HSDPA pattern, and at communication process, with reference to shown in Figure 7, the idiographic flow of the main carrier optimized choice of realization UE is as follows:

The multicarrier of step 701:RNC initial configuration UE is that to select the carrier wave of main carrier face F0 be main carrier to UE according to the poll principle;

Particularly, as shown in Figure 6, RNC is that the carrier wave at UE selection main carrier face F0 place is a main carrier, and according to the 4C-HSDPA technology, transmitting uplink data occurs in the Serving cell of main carrier face F0 and the Serving cell of auxilliary carrier wave face F1.Thereby sub-district Cell0-C is the initial main Serving cell of UE, and sub-district Cell1-C, Cell2-C, Cell3-C are the initial auxilliary Serving cell of UE.

Step 702:UE begins the multicarrier conversation, and UE begins periodically to measure the RSCP value of each Serving cell in the serial cell area of self current C of living in;

Step 703: whether checking arrives the report cycle of UE, if then continue step 704, otherwise return step 702;

Step 704:UE calculates the Q value of each sub-district Cell0-C, Cell1-C, Cell2-C, Cell3-C according to measured RSCP value, and the Q value that calculates is reported RNC;

In the network scenarios that present embodiment provided, UE is in 4 carrier operation patterns, set the number n=4 of Serving cell in each zone, the measurement period T of UE (measurement period_T) is 16s, UE only stores the RSCP value in 4 cycles, and the report cycle K (Reporting interval_K) that means UE is 64s.

UE begins conversation, then measuring timer begins, UE is from 4 period T of the 1st period T to the, UE measures the RSCP value of sub-district Cell0-C, Cell1-C, Cell2-C, Cell3-C, and according to measured RSCP value, calculate the Q value of sub-district Cell0-C, Cell1-C, Cell2-C, Cell3-C according to above-mentioned formula (1), shown in the table 1 specific as follows.

16s 32s 48s 64s Q

RSCP(t)f0 18dbm 16dbm 12dbm 6dbm 11dbm

RSCP(t)f1 19dbm 18dbm 13dbm 7dbm 12.2dbm

RSCP(t)f2 20dbm 19dbm 14dbm 8dbm 13.2dbm

RSCP(t)f3 22dbm 21dbm 16dbm 10dbm 15.2dbm

Table 1

Step 705:RNC receives each Q value that UE reports, find the Qf3 value of maximum Q value for sub-district Cell3-C, and definite Qf3 value is than the well preset threshold 1dbm of the Qf0 value of current main Serving cell Cell0-C, and the up-downgoing that records sub-district Cell3-C loads on threshold value L _Up, L _DescendingUnder, RNC re-selecting cell Cell3-C is the main Serving cell of UE;

Particularly, with each Q value of receiving according to ordering from big to small, therefrom find the Qf3 value of maximum Q value for sub-district Cell3-C, and the Qf3 value that found and the Qf0 value of current main Serving cell Cell0-C compared, obtain the well preset threshold 1dbm of Qf0 value of the Qf3 value that found and current main Serving cell Cell0-C, and the up-downgoing load value that record sub-district Cell3-C this moment is respectively 0.5,0.7, at threshold value L _Up=0.8, L _DescendingUnder=0.8, so RNC re-selecting cell Cell3-C is the main Serving cell of UE.

Here, the internal preset value a1=0.1 of UE, a2=0.2, a3=0.3, a4=0.4, the inner RRM preset threshold value of RNC R=1dbm, L _Up=0.8, L _Descending=0.8.

Here, the down load of each Serving cell normally allows the ratio of transmitting power to determine by Serving cell Far end Actual Aggregate Transmit Power and Serving cell maximum, its ascending load is normally by total interference power of the current up reception in sub-district and the maximum uplink interference power ratio decision that allows, and these all are that RRM by RNC safeguards.

To carrier wave face F3, transmitting uplink data occurs on carrier wave face F2, the F3 step 706:RNC with the main carrier reprovision, makes sub-district Cell3-C all to satisfy the demand that UE converses at this moment on transmitting uplink data and descending wireless conditions, continues step 707;

Whether step 707:UE conversation finishes, if, then finish current flow process, otherwise, step 702 returned.

In the practical application, if UE moves in communication process to the left, after UE enters B series cell area, can be in B series cell area gravity treatment master Serving cell.When UE moves to the border of C series cell area and B series cell area, UE measures sub-district Cell0-C, the descending wireless conditions of Cell1-C sub-district is relatively poor, and sub-district Cell2-C, the descending wireless conditions of Cell3-C is better, because Cell0-C, Cell1-C, Cell2-C, Cell3-C is respectively Cell0-B, Cell1-B, Cell2-B, the homogeneous frequency adjacent area of Cell3-B, their descending wireless conditions has very strong relevance at boundary, therefore, this moment sub-district Cell0-B, the descending wireless conditions of Cell1-B is also relatively poor, sub-district Cell2-B, the descending wireless conditions of Cell3-B is also better.

For making that UE can be at descending wireless conditions better cell Cell2-B, gravity treatment master Serving cell in the Cell3-B, can be by above-mentioned flow process, when UE moves to the border of C series cell area and B series cell area, RNC just with the main carrier reprovision to carrier wave face F3, guarantee sub-district Cell2-B, Cell3-B also can carry out transmitting uplink data, so, after UE enters B series cell area, just can be better in descending wireless conditions, and can carry out the sub-district Cell2-B of transmitting uplink data, select in the Cell3-B, make UE in communication process, can in time finish the gravity treatment of main Serving cell, prevent the generation of phenomenons such as call drop.

Embodiment two

Network scenarios as shown in Figure 8, UE is in the 4C-HSDPA pattern, UE is at communication process, move to the left, when UE moves to the boundary of C series cell area and B series cell area, measure sub-district Cell0-C, the ascending load of Cell1-C is all at congestion edge, sub-district Cell2-C, the ascending load of Cell3-C is suitable, because sub-district Cell0-C, Cell1-C, Cell2-C, Cell3-C is respectively sub-district Cell0-B, Cell1-B, Cell2-B, the homogeneous frequency adjacent area of Cell3-B, their descending wireless conditions has very strong relevance at boundary, therefore as can be known, in the current B series cell area, sub-district Cell0-B, the ascending load of Cell1-B is all at congestion edge, sub-district Ce1l2-B, the ascending load of Cell3-B is suitable, for making UE after entering B series cell area, guarantee that UE can be at sub-district Cell2-B, select main Serving cell in the Cell3-B, current, when UE moves to the boundary of C series cell area and B series cell area, need be optimized selection to the main carrier of UE, with reference to shown in Figure 9, the idiographic flow that the main carrier of UE is optimized selection is as follows:

The multicarrier of step 901:RNC initial configuration UE is that to select the carrier wave of main carrier face F0 be main carrier to UE according to the poll principle;

Particularly, as shown in Figure 8, RNC is that the carrier wave at UE selection main carrier face F0 place is a main carrier at the beginning, and according to the 4C-HSDPA technology, transmitting uplink data occurs in the Serving cell of main carrier face F0 and the Serving cell of auxilliary carrier wave face F1.Thereby sub-district Cell0-C is the initial main Serving cell of UE, and sub-district Cell1-C, Cell2-C, Cell3-C are the initial auxilliary Serving cell of UE.

Step 902:UE begins the multicarrier conversation, and UE begins periodically to measure the RSCP value of each Serving cell in the current C series cell area of living in of UE;

Step 903: whether checking arrives the report cycle of UE, if then continue step 904, otherwise return step 902;

In the network scenarios that present embodiment provided, UE is in 4 carrier operation patterns, set the number n=4 of Serving cell in each zone, the measurement period T of UE (measurement period_T) is 16s, UE only stores the RSCP value in 4 cycles, and the report cycle K (Reporting interval_K) that means UE is 64s.

Step 904:UE calculates the Q value of each sub-district Cell0-C, Cell1-C, Cell2-C, Cell3-C according to measured RSCP value, and the Q value that calculates is reported RNC;

UE begins conversation, then measuring timer begins, UE is from 4 period T of the 1st period T to the, UE measures the RSCP value of sub-district Cell0-C, Cell1-C, Cell2-C, Cell3-C, and according to measured RSCP value, calculate the Q value of sub-district Cell0-C, Cell1-C, Cell2-C, Cell3-C according to above-mentioned formula (1), shown in the table 2 specific as follows.

16s 32s 48s 64s Q

RSCP(t)f0 18dbm 16dbm 12dbm 8dbm 11.8dbm

RSCP(t)f1 17dbm 15dbm 13dbm 7dbm 11.4dbm

RSCP(t)f2 17dbm 14dbm 14dbm 9dbm 12.3dbm

RSCP(t)f3 16dbm 13dbm 15dbm 11dbm?13.1dbm

Table 2

Step 905:RNC receives each Q value that UE reports, find the Qf3 value of maximum Q value for sub-district Cell3-C, and definite Qf3 value is than the well preset threshold 1dbm of the Qf0 value of current main Serving cell Cell0-C, and the up-downgoing that records sub-district Cell3-C loads on threshold value L _Up, L _DescendingUnder, RNC re-selecting cell Cell3-C is the main Serving cell of UE;

Particularly, with each Q value of receiving according to ordering from big to small, therefrom find the Qf3 value of maximum Q value for sub-district Cell3-C, and the Qf3 value that found and the Qf0 value of current main Serving cell Cell0-C compared, the Qf3 value that obtains being found is than the well preset threshold 1dbm of the Qf0 value of current main Serving cell Cell0-C, and the up-downgoing load value that record sub-district Cell3-C this moment is respectively 0.5,0.7, at threshold value L _Up=0.8, L _DescendingUnder=0.8, so RNC re-selecting cell Cell3-C is the main Serving cell of UE.

Here, the internal preset value a1=0.1 of UE, a2=0.2, a3=0.3, a4=0.4, the inner RRM preset threshold value of RNC R=1dbm, L _Up=0.8, L _Descending=0.8.

To carrier wave face F3, transmitting uplink data occurs on carrier wave face F2, the F3 step 906:RNC with the main carrier reprovision, makes sub-district Cell3-C all to satisfy the demand that UE converses at this moment on transmitting uplink data and descending wireless conditions, continues step 907;

Whether step 907:UE conversation finishes, if, then finish current flow process, otherwise, step 902 returned.

Optimized choice by above main carrier, make UE before entering B series cell area, with the main carrier reprovision to the main carrier face F3 of coverage cell Cell3-B, so, UE is after entering B series cell area, can the suitable sub-district Cell3-B of gravity treatment ascending load be the main Serving cell of UE, sub-district Cell3-B and neighbor cell Cell2-B thereof just can contribute the uplink macro diversity of UE, make UE in moving process, in time finish the sub-district gravity treatment, and the throughput of raising UE data transmission performance and network, guarantee that the UE conversation is smooth and easy, effectively prevent the generation of phenomenons such as call drop.

The above is preferred embodiment of the present invention only, is not to be used to limit protection scope of the present invention, all any modifications of being done within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.

Claims (16)

1. main carrier optimized choice method is characterized in that described method comprises:

Radio network controller (RNC) obtains the Q value of each Serving cell in the current region of terminal (UE) in real time;

According to the Q value of being obtained, the main Serving cell of the described UE of described RNC gravity treatment, and on the main carrier face that the main carrier reprovision of described UE is in to institute's gravity treatment master Serving cell.

2. main carrier optimized choice method according to claim 1 is characterized in that, the process that described RNC obtains each Serving cell Q value in the current region of UE in real time specifically comprises:

Described UE is in communication process, received signal code power (RSCP) value of each Serving cell in measurement in real time self region, according to measured RSCP value, calculate the Q value of each Serving cell in self region in real time, more resulting Q value is reported described RNC.

3. main carrier optimized choice method according to claim 2 is characterized in that, described UE measures the process of each Serving cell RSCP value in self region in real time, is specially:

Described UE periodically measures the RSCP value of each Serving cell in self region in communication process, and measured RSCP value is preserved.

4. main carrier optimized choice method according to claim 3 is characterized in that described UE measures the cycle of each Serving cell RSCP value, is obtained from the policy control message that described RNC sends by described UE.

5. according to claim 3 or 4 described main carrier optimized choice methods, it is characterized in that described UE is according to measured RSCP value, calculate the process of each Serving cell Q value in self region in real time, be specially:

Described UE according to the RSCP value of each Serving cell measured or that preserved, calculates the Q value of each Serving cell when arriving report cycle.

6. main carrier optimized choice method according to claim 5 is characterized in that described report cycle is specially the integral multiple that described UE measures the cycle of each Serving cell RSCP value.

7. main carrier optimized choice method according to claim 5 is characterized in that, described report cycle is specifically obtained from the policy control message that described RNC sends by described UE.

8. main carrier optimized choice method according to claim 1, it is characterized in that described RNC is according to the Q value of being obtained, the main Serving cell of the described UE of gravity treatment, and the process on the main carrier face that the main carrier reprovision of described UE is in to institute's gravity treatment master Serving cell, specifically comprise:

Described RNC is in the described Q value of obtaining, select maximum Q value, if the corresponding Serving cell of maximum Q value is not the current main Serving cell of described UE, and maximum Q value is than the well predetermined threshold value of the Q value of the current main Serving cell of described UE, and the up-downgoing load of maximum Q value institute corresponding with service sub-district is all in threshold range, then that the Q value is maximum Serving cell gravity treatment is the main Serving cell of described UE, and with the main carrier reprovision to the maximum residing carrier wave face of Serving cell of this Q value, otherwise, do not carry out the gravity treatment of main Serving cell, and keep the original main carrier configuration of described UE constant.

9. main carrier optimized choice device is characterized in that described device comprises: acquiring unit, gravity treatment unit and reprovision unit, wherein,

Acquiring unit is used for obtaining in real time the Q value of each Serving cell in the current region of UE;

The gravity treatment unit is used for the Q value obtained according to described acquiring unit, the main Serving cell of the described UE of described RNC gravity treatment;

The reprovision unit is used for main carrier reprovision with described UE to the residing main carrier face of the described gravity treatment unit gravity treatment master of institute Serving cell.

10. main carrier optimized choice device according to claim 9 is characterized in that described device also comprises: selected cell, authentication unit, wherein,

Selected cell is used for the Q value obtained at described acquiring unit, selects maximum Q value;

Authentication unit, be used to verify that whether the corresponding Serving cell of the selected maximum Q value of described selected cell is whether the current main Serving cell of described UE and selected maximum Q value be better than the up-downgoing load of predetermined threshold value and selected maximum Q value institute corresponding with service sub-district whether all in threshold range than the Q value of the current main Serving cell of described UE, if, then start described gravity treatment unit and described reprovision unit, otherwise, do not start described gravity treatment unit and described reprovision unit.

11. a main carrier optimized choice system is characterized in that described system comprises: RNC and UE, wherein,

RNC is used for obtaining from described UE in real time the Q value of each Serving cell in the current region of described UE, the Q value obtained of basis again, the main Serving cell of the described UE of gravity treatment, and with the main carrier reprovision of described UE to the residing main carrier face of institute's gravity treatment master Serving cell.

12. main carrier optimized choice according to claim 11 system is characterized in that described RNC comprises acquiring unit, gravity treatment unit and reprovision unit, wherein,

Acquiring unit is used for the real-time Q value of obtaining each Serving cell in the current region of described UE from described UE;

The gravity treatment unit is used for the Q value obtained according to described acquiring unit, the main Serving cell of the described UE of described RNC gravity treatment;

The reprovision unit is used for main carrier reprovision with described UE to the residing main carrier face of the described gravity treatment unit gravity treatment master of institute Serving cell.

13. main carrier optimized choice according to claim 11 system is characterized in that described UE comprises: measuring unit, computing unit and report the unit, wherein,

Measuring unit is used for measuring the RSCP value of each Serving cell in the described UE region in real time at described UE communication process;

Computing unit is used for the RSCP value according to described measuring unit measurement, calculates the Q value of each Serving cell in the described UE region in real time;

Report the unit, the Q value that is used for described computing unit is obtained reports described RNC.

14. main carrier optimized choice according to claim 13 system is characterized in that described measuring unit specifically is used for,

In described UE communication process, periodically measure the RSCP value of each Serving cell in the described UE region, and measured RSCP value is preserved.

15. according to each described main carrier optimized choice system of claim 11 to 14, it is characterized in that, described computing unit, specifically be used for, when arriving the report cycle of described UE, the RSCP value of that record according to described measuring unit or each Serving cell of preserving calculates the Q value of each Serving cell.

16. main carrier optimized choice according to claim 12 system is characterized in that described RNC also comprises: selected cell, authentication unit, wherein,

Selected cell is used for the Q value obtained at described acquiring unit, selects maximum Q value;

Authentication unit, be used to verify that whether the corresponding Serving cell of the selected maximum Q value of described selected cell is whether the current main Serving cell of described UE and selected maximum Q value be better than the up-downgoing load of predetermined threshold value and selected maximum Q value institute corresponding with service sub-district whether all in threshold range than the Q value of the current main Serving cell of described UE, if, then start described gravity treatment unit and described reprovision unit, otherwise, do not start described gravity treatment unit and described reprovision unit.

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