CN102026260B - Switching method and terminal and network device - Google Patents

Abstract

The invention relates to the field of communication technologies and discloses a switching method and terminal and network device. The switching method comprises the steps of: measuring the channel quality of every carrier frequency of a serving cell of a terminal; evaluating the comprehensive channel quality Q source of the serving cell according to the channel quality of every carrier frequency of the serving cell; measuring the channel quality of every carrier frequency of the target cell; evaluating the comprehensive channel quality Q target of the target cell according to the channel quality of every carrier frequency of the target cell; and when the Q source and the Q target satisfy setting conditions, informing the network side to ensure that the network side switches the terminal from the serving cell to the target cell. The embodiment of the invention can be used for carrying out a comprehensive evaluation on all the carrier waves of the serving cell and the target cell, carrying out a comparison after obtaining the comprehensive channel qualities of the serving cell and the target cell, and triggering the terminal switching according to the comparison result, thereby enhancing the accuracy of the terminal switching.

Description

A kind of changing method and terminal, the network equipment

Technical field

The present invention relates to communication technical field, relate in particular to a kind of changing method and terminal, the network equipment.

Background technology

In multi-carrier frequency communication system, terminal (User Equipment, UE) can keep connecting from multiple communities that work in different carrier frequency simultaneously, UE can receive high-speed downlink packet access (High Speed Downlink Packet Access by multiple communities that work in different carrier frequency, HSDPA) data and transmission High Speed Uplink Packet access (High Speed Uplink Packet Access, HSUPA) data.

In the time that UE works in two carrier frequency, set in advance the main carrier frequency that a carrier frequency is UE, the assistant carrier frequency that another carrier frequency is UE, the working carrier frequency of configuration UE is main carrier frequency simultaneously.Comprise in double small district HSDPA (DualCell-HSDPA, DC-HSDPA) system the community that a pair of overlay area is identical, the community that works in main carrier frequency is main carrier frequency community, and the community that works in assistant carrier frequency is assistant carrier frequency community.Wherein, the main carrier frequency community that overlay area is identical and assistant carrier frequency community form Yi Ge community pair, simultaneously for UE provides data transport service.

At present, only depend on main carrier measurement and carry out Serving cell switching, so likely cause, the channel quality of the assistant carrier frequency of the Target cell after switching is worse than the assistant carrier frequency channel quality of Serving cell far away, thereby communication quality is reduced.

Summary of the invention

The embodiment of the present invention provides a kind of changing method and terminal, the network equipment, can improve the accuracy that terminal is switched.

In order to solve the problems of the technologies described above, the embodiment of the present invention provides following technical scheme:

The embodiment of the present invention provides a kind of changing method, comprising:

The channel quality of each carrier frequency of the Serving cell of measuring terminals;

According to the comprehensive channel quality Q of the channel quality assessment Serving cell of each carrier frequency of described Serving cell _source;

The channel quality of each carrier frequency of measurement target community;

According to the comprehensive channel quality Q of the channel quality assessment Target cell of each carrier frequency of described Target cell _target;

At described Q _sourcewith described Q _targetwhile meeting the condition of setting, informing network side, so that network side switches to Target cell by described terminal from Serving cell.

The embodiment of the present invention also provides a kind of changing method, comprising:

The channel quality of each carrier frequency of the Serving cell that receiving terminal reports, and the channel quality of each carrier frequency of Target cell;

According to the comprehensive channel quality Q of Serving cell described in the channel quality assessment of each carrier frequency of described Serving cell _sorce;

According to the comprehensive channel quality Q of Target cell described in the channel quality assessment of each carrier frequency of described Target cell _target;

At described Q _sourcewith described Q _targetwhile meeting the condition of setting, described terminal is switched to Target cell from Serving cell.

The embodiment of the present invention provides a kind of terminal, comprising:

The first measuring unit, for measuring the channel quality of each carrier frequency of Serving cell of this terminal;

The first assessment unit, for according to the comprehensive channel quality Q of the channel quality assessment Serving cell of each carrier frequency of described Serving cell _source;

The second measuring unit, for the channel quality of each carrier frequency of measurement target community;

The second assessment unit, for according to the comprehensive channel quality Q of the channel quality assessment Target cell of each carrier frequency of described Target cell _target;

The first judging unit, for judging described Q _sourcewith described Q _targetbetween whether meet the condition of setting;

Notification unit, in the judged result of described the first judging unit when being, informing network side, so that network side switches to Target cell by terminal from Serving cell.

The embodiment of the present invention provides a kind of network equipment, comprising:

Receiving element, the channel quality of each carrier frequency of the Serving cell reporting for receiving terminal, and the channel quality of each carrier frequency of Target cell;

The 3rd assessment unit, for according to the comprehensive channel quality Q of Serving cell described in the channel quality assessment of each carrier frequency of described Serving cell _source;

The 4th assessment unit, for according to the comprehensive channel quality Q of Target cell described in the channel quality assessment of each carrier frequency of described Target cell _target;

The 3rd judging unit, for judging described Q _sourceand Q _targetbetween whether meet the condition of setting;

Switch unit, is yes for the judged result at described the 3rd judging unit, described terminal is switched to described Target cell from described Serving cell.

As can be seen from the above technical solutions, the embodiment of the present invention has the following advantages:

In the embodiment of the present invention, be no longer dependent on the switching that only the main carrier measurement of Serving cell and Target cell is carried out triggering terminal, but all carrier waves of Serving cell and Target cell are all carried out to comprehensive assessment, obtain comparing after the comprehensive channel quality of Serving cell and Target cell, and carry out triggering terminal switching according to comparative result, the accuracy that terminal is switched can be improved like this, and then the communication quality of terminal can be improved.

Accompanying drawing explanation

In order to be illustrated more clearly in the technical scheme of the embodiment of the present invention, to the accompanying drawing of required use in embodiment be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.

Fig. 1 provides a kind of changing method flow chart for the embodiment of the present invention one;

Embodiment flow chart of evaluation services community comprehensive channel quality that Fig. 2 provides for the embodiment of the present invention one;

Embodiment flow chart of assessment objective community comprehensive channel quality that Fig. 3 provides for the embodiment of the present invention one;

Another embodiment flow chart of evaluation services community comprehensive channel quality that Fig. 4 provides for the embodiment of the present invention one;

Another embodiment flow chart of assessment objective community comprehensive channel quality that Fig. 5 provides for the embodiment of the present invention one;

Fig. 6 provides another kind of changing method flow chart for the embodiment of the present invention two;

A kind of terminal structure figure that Fig. 7 a provides for the embodiment of the present invention three;

Another terminal structure figure that Fig. 7 b provides for the embodiment of the present invention three;

A kind of structure chart of the first assessment unit that Fig. 8 a provides for the embodiment of the present invention three;

A kind of structure chart of the second assessment unit that Fig. 8 b provides for the embodiment of the present invention three;

The another kind of structure chart of the first assessment unit that Fig. 9 a provides for the embodiment of the present invention three;

The another kind of structure chart of the second assessment unit that Fig. 9 b provides for the embodiment of the present invention three;

Another structure chart of the first assessment unit that Figure 10 a provides for the embodiment of the present invention three;

Another structure chart of the second assessment unit that Figure 10 b provides for the embodiment of the present invention three;

Another structure chart of the first assessment unit that Figure 11 a provides for the embodiment of the present invention three;

Another structure chart of the second assessment unit that Figure 11 b provides for the embodiment of the present invention three;

A kind of structure chart of the first judging unit that Figure 11 c provides for the embodiment of the present invention three;

The structure chart of a kind of network equipment that Figure 12 a provides for the embodiment of the present invention four;

The structure chart of another network equipment that Figure 12 b provides for the embodiment of the present invention four;

A kind of structure chart of the 3rd assessment unit that Figure 13 a provides for the embodiment of the present invention four;

A kind of structure chart of the 4th assessment unit that Figure 13 b provides for the embodiment of the present invention four;

The another kind of structure chart of the 3rd assessment unit that Figure 14 a provides for the embodiment of the present invention four;

The another kind of structure chart of the 4th assessment unit that Figure 14 b provides for the embodiment of the present invention four;

A kind of structure chart of the 3rd assessment unit that Figure 15 a provides for the embodiment of the present invention four;

A kind of structure chart of the 4th assessment unit that Figure 15 b provides for the embodiment of the present invention four;

The another kind of structure chart of the 3rd assessment unit that Figure 16 a provides for the embodiment of the present invention four;

The another kind of structure chart of the 4th assessment unit that Figure 16 b provides for the embodiment of the present invention four;

A kind of structure chart of the 3rd judging unit that Figure 16 c provides for the embodiment of the present invention four.

Embodiment

Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Based on the embodiment in the present invention, those of ordinary skills, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.

At present, the measurement to UE and mobile management are all carried out based on main carrier frequency.In the time that UE moves to the main carrier frequency community of this UE of current service or the edge of assistant carrier frequency community, the radio signal quality of main carrier frequency community and assistant carrier frequency community is all poor, radio network controller (Radio Network Controller, the measurement report of the main carrier frequency that RNC) can report according to UE or base station (NodeB) carries out the switching of Serving cell, the main carrier frequency community of UE and assistant carrier frequency community are switched to another adjacent with UE to working in the community and the community that works in assistant carrier frequency of main carrier frequency, to form the Serving cell of new service UE simultaneously.Compared with single carrier frequency system, main carrier frequency community in multi-carrier frequency system and the radio signal quality sum of assistant carrier frequency community in main carrier frequency community or the edge of assistant carrier frequency community be fast-descending trend, so, switch Serving cell in multi-carrier frequency system can increase the cutting off rate in handoff procedure, has reduced the throughput of UE in handoff procedure.

In multi-carrier frequency communication system, for example can realize as follows a kind of switching of Serving cell: UE under the indication of network side RNC, respectively the main carrier frequency of Serving cell and Target cell is measured, obtain Serving cell main carrier frequency measurement result Q _f1-sourceand Target cell main carrier frequency measurement result Q _f1-target; Wherein, Q _f1-sourceand Q _f1-targetcan be the received power of main carrier frequency simultaneously; Then, UE judges Q _f1-sourceand Q _f1-targetwhether meet formula: 10Log (Q _f1-target)-10Log (Q _f1-source) > H _1d/ 2; Wherein, H _1dthe/2nd, the switching sluggishness of being prenoticed UE by network side; If above-mentioned formula is set up, UE reports the measurement report of main carrier frequency to network side RNC, and network side RNC is switched to Target cell according to this measurement report by the Serving cell of serving UE.

But, above-mentioned changing method only determines whether triggering the switching between Serving cell to the main carrier measurement of Serving cell and Target cell, the assistant carrier frequency that the method is based upon hypothesis Serving cell and Target cell has identical signal quality or has identical variation tendency with main carrier frequency, but for the situation in real network, this hypothesis might not be set up.Because the load on each carrier frequency of Serving cell and Target cell, interference, path loss (being path loss) are all not necessarily identical.

Embodiment mono-:

Refer to Fig. 1, a kind of changing method flow chart that Fig. 1 provides for the embodiment of the present invention one.As shown in Figure 1, the method can comprise step:

101, the channel quality of each carrier frequency of the Serving cell of measuring terminals;

Wherein, the measurement control message (Measurement Control) that UE can send by reception RNC starts each carrier frequency of Serving cell is carried out to channel quality measurement, or, UE also can be in the time that the preset time value of local timer reaches, spontaneous startup is carried out channel quality measurement to each carrier frequency of Serving cell, or network side can also start UE by other signaling messages each carrier frequency of Serving cell is carried out to channel quality measurement.

Wherein, the specific implementation process that UE carries out channel quality measurement to each carrier frequency of Serving cell belongs to general knowledge known in those skilled in the art, and therefore not to repeat here for the present embodiment.

102, according to the comprehensive channel quality Q of the channel quality assessment Serving cell of each carrier frequency of above-mentioned Serving cell _source

103, the channel quality of each carrier frequency of measurement target community;

104, according to the comprehensive channel quality Q of the channel quality assessment Target cell of each carrier frequency of above-mentioned Target cell _target;

105, at above-mentioned Q _sourcewith above-mentioned Q _targetbetween meet set condition time, informing network side, so that network side switches to Target cell by terminal from Serving cell.

Wherein, Serving cell and Target cell related in the present embodiment and subsequent embodiment are all can be the multi-carrier frequency cell with main carrier frequency and assistant carrier frequency, the community that such as DC-HSDPA system is included etc.; Or having Yi Ge community in Serving cell and Target cell at least is the multi-carrier frequency cell with main carrier frequency and assistant carrier frequency.

Wherein, between above-mentioned step 101 and step 103, there is not order successively, between same above-mentioned step 102 and step 104, do not have order successively yet.

For instance, the concrete reality of above-mentioned step 102 can be adopted with the following method:

According to the measured value size of the channel quality of each carrier frequency of above-mentioned Serving cell, choose the superior of measured value as above-mentioned Serving cell comprehensive channel quality Q _source.

Such as, in above-mentioned steps 101, obtain the measured value of the channel quality of the individual carrier frequency of n (n>=1) (comprising main carrier frequency and assistant carrier frequency), be respectively Q _f1-source, Q _f2-source..., Q _fn-source; If characterize the channel quality of each carrier frequency with received power, can from n channel quality value, choose the measured value of maximum channel quality, choose Q _source=Max (Q _f1-source, Q _f2-source..., Q _fn-source) as the comprehensive channel quality Q of above-mentioned Serving cell _source.If, characterize the channel quality of each carrier frequency with route loss, can from n channel quality value, choose the measured value of minimum channel quality, choose Q _source=Min (Q _f1-source, Q _f2-source..., Q _fn-source) as the comprehensive channel quality Q of above-mentioned Serving cell _source.

Correspondingly, the concrete reality of above-mentioned step 104 also can adopt similar method:

According to the measured value size of the channel quality of each carrier frequency of above-mentioned Target cell, choose the superior of measured value as above-mentioned Target cell comprehensive channel quality Q _target.

Due to, the parameter type that can be used for the channel quality that characterizes a carrier frequency has a variety of, such as received power, signal to noise ratio, route loss etc., for the ease of the Q in above-mentioned step 105 _sourceand Q _targetcomparison, identical for characterizing the parameter type of channel quality of each carrier frequency of Target cell for characterizing parameter type and the above-mentioned step 103 of channel quality of each carrier frequency of Serving cell in above-mentioned step 101.

Such as, in above-mentioned step 101, adopt the received power of each carrier frequency of Serving cell to characterize the channel quality of this carrier frequency, above-mentioned step 103 also need to adopt Target cell the received power of each carrier frequency characterize the channel quality of this carrier frequency.

Again such as, in above-mentioned step 101, adopt the noise of each carrier frequency of Serving cell recently to characterize the channel quality of this carrier frequency, above-mentioned step 103 also needs the noise of each carrier frequency that adopts Target cell recently to characterize the channel quality of this carrier frequency.

From throughput being contributed to maximum angle, the measured carrier frequency of matter measures conclusive effect to communication quality with handling up, and therefore relatively the best carrier frequency of channel quality is effective.Above-mentioned method has been avoided the defect of easily omitting top-quality carrier frequency while comparison by main carrier frequency or assistant carrier frequency.

For instance, the concrete reality of above-mentioned step 102 also can be adopted with the following method:

The measured value of the channel quality of each carrier frequency of above-mentioned Serving cell is carried out to calculation process, obtain calculation process result; Using above-mentioned accumulation result as above-mentioned Serving cell comprehensive channel quality Q _source.

Correspondingly, the concrete reality of above-mentioned step 104 also can adopt similar approach:

The measured value of the channel quality of each carrier frequency of above-mentioned Target cell is carried out to calculation process, obtain calculation process result; Comprehensive channel quality Q using above-mentioned calculation process result as above-mentioned Target cell _target.

For instance, above-mentioned Serving cell comprehensive channel quality Q _sourcecan adopt the mode of following direct summation to obtain:

$Q_{\mathrm{source}}=\underset{i=1}{\overset{N}{\mathrm{\Σ}}}{Q}_{\mathrm{fi}-\mathrm{source}};---\left(1\right)$

Wherein, the carrier frequency number that N is Serving cell, Q _fi-targetit is the measured value of the channel quality of i carrier frequency of Serving cell.

Correspondingly, above-mentioned Target cell comprehensive channel quality Q _targetalso can adopt the mode of following direct summation to obtain:

$Q_{t\arg \mathrm{et}}=\underset{i=1}{\overset{N}{\mathrm{\Σ}}}{Q}_{\mathrm{fi}-t\arg \mathrm{et}};---\left(2\right)$

Wherein, the carrier frequency number that N is Target cell, Q _fi-targetit is the measured value of the channel quality of i carrier frequency of Target cell.

For instance, the comprehensive channel quality Q of above-mentioned Serving cell _sourcecan also adopt the mode of following weighted sum to obtain:

$Q_{\mathrm{source}}=\underset{i=1}{\overset{N}{\mathrm{\Σ}}}{W_{i-\mathrm{source}}Q}_{\mathrm{fi}-\mathrm{source}};---\left(3\right)$

Wherein, the carrier frequency number that N is Serving cell, Q _fi-sourcethe measured value of the channel quality of i carrier frequency of Serving cell, W _i-sourcethat the i of Serving cell is at the weights of carrier frequency.

Correspondingly, above-mentioned Target cell comprehensive channel quality Q _targetalso can adopt the mode of following weighted sum to obtain:

$Q_{t\arg \mathrm{et}}=\underset{i=1}{\overset{N}{\mathrm{\Σ}}}{W_{i-t\arg \mathrm{et}}Q}_{\mathrm{fi}-t\arg \mathrm{et}};---\left(4\right)$

Wherein, the carrier frequency number that N is Target cell, Q _fi-targetthe measured value of the channel quality of i carrier frequency of Target cell, W _i-targetthat the i of Target cell is at the weights of carrier frequency.

Because the measured value of the channel quality of measuring on a carrier frequency can represent the throughput that UE obtains on this carrier frequency, therefore, adopt above-mentioned method can very accurately control the opportunity of switching, make throughput maximum.

Wherein, the condition of setting in above-mentioned step 105 can be: Q _targetbe better than Q _sourcce, or Q _targetbe better than Q _sourcewith switch sluggish and, or Q _targetthat measure skew with Target cell and be better than Q _sourcewith Serving cell measure skew and, or Q _targetthat measure skew with Target cell and be better than Q _sourcemeasure skew with Serving cell, switch sluggish and.

For instance, if adopt above-mentioned formula (1) and formula (2) to obtain respectively Q _sourceand Q _targetif, or adopt above-mentioned formula (3) and formula (4) to obtain respectively Q _sourceand Q _target, and Q _sourceand Q _targetall adopt received power or noise recently to characterize, the condition of setting in above-mentioned step 105 can be:

10Log(Q _target)+CIO _target＞10Log(Q _source)+CIO _source+H _1d/2；(5)

Wherein, described H _1dfor switching sluggishness, CIO _targetfor measuring skew, CIO in Target cell _sourcefor measuring skew in Serving cell; Wherein, above-mentioned CIO _targetand CIO _sourcevalue may be 0, H _idvalue may be also 0.

If Q _sourceand Q _targetall adopt route loss to characterize, above-mentioned formula (5) can be transformed to:

10Log(Q _target)+CIO _target＜10Log(Q _source)+CIO _source+H _1d/2；(6)

For instance, the concrete reality of above-mentioned step 102 can also adopt method as shown in Figure 2, and the method can comprise step:

201, utilize the signal interference ratio of each carrier frequency of the measured value calculation services community of the channel quality of each above-mentioned carrier frequency;

For instance, can utilize the measured value of the channel quality of each carrier frequency to add the spreading gain of each carrier frequency, and add that receiver demodulation gain obtains the signal interference ratio of each carrier frequency.For example, can adopt following formula to obtain the signal interference ratio of each carrier frequency of Serving cell:

SIR _CPICH-dB＝Ec/NO _CPICH-dB+G _spreading+G _rcver；(7)

Wherein, SIR _cPICH-dBwhat represent is the signal interference ratio of each carrier frequency of Serving cell; Ec/NO _cPICH-dBrepresent the measured value of the channel quality of each carrier frequency of Serving cell; G _spreadingrepresent the spreading gain of this carrier frequency, G _rcverrepresent receiver demodulation gain.For UE, above-mentioned G _spreadingand G _rcverbe that system is known, UE is without measuring accordingly again.

202, calculate the channel quality indication of each carrier frequency of above-mentioned Serving cell according to the signal interference ratio of each above-mentioned carrier frequency;

After above-mentioned step 201 calculates the signal interference ratio of each carrier frequency of Serving cell, can adopt following formula to calculate the channel quality indication of each carrier frequency of Serving cell

CQI＝floor(SIR _CPICH-dB+Gamma+lin2db(16/256)+4.5)；(8)

What wherein, CQI (Channel Quality Indicator) represented is the channel quality indication of each carrier frequency of Serving cell; SIR _cPICH-dBwhat represent is the signal interference ratio of each carrier frequency of Serving cell; Gamma's is the data channel power biasing of each carrier frequency of Serving cell.

203, the channel quality indication of each carrier frequency of above-mentioned Serving cell is carried out to calculation process, obtain calculation process result; Comprehensive channel quality Q using above-mentioned calculation process result as above-mentioned Serving cell _source;

Correspondingly, the concrete reality of above-mentioned step 104 also can adopt method as shown in Figure 3, and shown in the method and Fig. 2, method is similar, can comprise step:

301, utilize the measured value of the channel quality of each above-mentioned carrier frequency to calculate the signal interference ratio of each carrier frequency of Target cell;

Wherein, the specific implementation of above-mentioned step 301 can be similar with above-mentioned step 201, and the present embodiment is not repeated at this.

302, calculate the channel quality indication of each carrier frequency of Target cell according to the signal interference ratio of each above-mentioned carrier frequency;

Wherein, the specific implementation of above-mentioned step 302 can be similar with above-mentioned step 202, and the present embodiment is not repeated at this.

303, the channel quality indication of each carrier frequency of above-mentioned Target cell is carried out to calculation process, obtain calculation process result; Using above-mentioned calculation process result as above-mentioned Target cell comprehensive channel quality Q _target.

For instance, in above-mentioned step 203, obtain Serving cell comprehensive channel quality Q _sourcecan adopt the mode of following direct summation to obtain:

$Q_{\mathrm{source}}=\underset{i=1}{\overset{N}{\mathrm{\Σ}}}{\mathrm{CIO}}_{\mathrm{fi}-\mathrm{source}}---\left(9\right)$

Wherein, the carrier frequency number that N is Serving cell, CIO _fi-sourceit is the channel quality indication of i carrier frequency of Serving cell.

Correspondingly, in above-mentioned step 303, obtain Target cell comprehensive channel quality Q _targetcan adopt the mode of following direct summation to obtain:

$Q_{t\arg \mathrm{et}}=\underset{i=1}{\overset{N}{\mathrm{\Σ}}}{\mathrm{CIO}}_{\mathrm{fi}-t\arg \mathrm{et}}---\left(10\right)$

Wherein, the carrier frequency number that N is Target cell, CIO _fi-targetit is the channel quality indication of i carrier frequency of Target cell.

For instance, in above-mentioned step 203, obtain the comprehensive channel quality Q of Serving cell _sourcecan also adopt the mode of following weighted sum to obtain:

$Q_{\mathrm{source}}=\underset{i=1}{\overset{N}{\mathrm{\Σ}}}{W}_{i-\mathrm{source}}{\mathrm{CIO}}_{\mathrm{fi}-\mathrm{source}}---\left(11\right)$

Wherein, the carrier frequency number that N is Serving cell, CIO _fi-sourcethe channel quality indication of i carrier frequency of Serving cell, W _i-sourcethe weights of i carrier frequency of Serving cell.

Correspondingly, in above-mentioned step 303, obtain Target cell comprehensive channel quality Q _targetalso can adopt the mode of following weighted sum to obtain:

$Q_{t\arg \mathrm{et}}=\underset{i=1}{\overset{N}{\mathrm{\Σ}}}{W}_{i-t\arg \mathrm{et}}{\mathrm{CIO}}_{\mathrm{fi}-t\arg \mathrm{et}}---\left(12\right)$

Wherein, the carrier frequency number that N is Target cell, CIO _fi-targetthe channel quality indication of i carrier frequency of Target cell, W _i-targetthat the i of Target cell is at the weights of carrier frequency.

Because the channel quality indication of measuring on a carrier frequency can represent that UE is in this carrier frequency upper signal channel quality, therefore, adopt the method shown in Fig. 2 and Fig. 3 also can very accurately control the opportunity of switching, make throughput maximum.

For instance, the concrete reality of above-mentioned step 102 can also adopt method as shown in Figure 4, and the method can comprise step:

Step 401～step 402 is identical with above-mentioned step 201～step 202;

403,, according to the corresponding relation of channel quality indication and transmission block size, obtain the transmission block size of each carrier frequency of above-mentioned Serving cell;

For instance, channel quality indication (CQI) and transmission block size (Transport Block Size, TBS) corresponding relation can be prenoticed to UE by network side, and UE can inquire corresponding TBS according to the CQI of each carrier frequency of Serving cell like this.

404, the transmission block size of each carrier frequency of above-mentioned Serving cell is carried out to calculation process, obtain calculation process result; Comprehensive channel quality Q using above-mentioned calculation process result as described Serving cell _source;

For instance, the transmission block size of each carrier frequency of the above-mentioned Serving cell of can directly adding up, obtains accumulation result; Using above-mentioned accumulation result as above-mentioned Serving cell comprehensive channel quality Q _source;

Or, the transmission block size of each carrier frequency of first calculation services community and the result of product of these carrier frequency weights; And then the result of product of the transmission block of cumulative each carrier frequency size and these carrier frequency weights, using accumulation result as above-mentioned Serving cell comprehensive channel quality Q _source.

Correspondingly, the concrete reality of above-mentioned step 104 can also adopt method as shown in Figure 5, and shown in the method and Fig. 4, method is similar, can comprise step:

Step 501～step 502 is similar with above-mentioned step 301～step 302;

503,, according to the corresponding relation of channel quality indication and transmission block size, obtain the transmission block size of each carrier frequency of above-mentioned Target cell;

504, the transmission block size of each carrier frequency of above-mentioned Target cell is carried out to calculation process, obtain calculation process result; Comprehensive channel quality Q using above-mentioned calculation process result as described Target cell _target.

Wherein, the specific implementation of above-mentioned step 504 can be similar with above-mentioned step 404, and the present embodiment is not repeated at this.

Method shown in Fig. 4 and Fig. 5 is the angle of main carrier frequency and assistant carrier frequency throughput sum from multi-carrier frequency throughput, choose corresponding TBS according to each carrier frequency (comprising main carrier frequency and assistant carrier frequency) channel quality value of measuring, the summation corresponding to all carrier frequency, and compare, make throughput maximum the opportunity that can control more accurately switching.

Obtain Serving cell comprehensive channel quality Q if adopt above-mentioned Fig. 2 mode _sourceand adopt Fig. 3 mode to obtain Target cell comprehensive channel quality Q _target, or adopt Fig. 4 mode to obtain Serving cell comprehensive channel quality Q _sourceand adopt Fig. 5 mode to obtain Target cell comprehensive channel quality Q _target, and Q _sourceand Q _targetall adopt received power or noise recently to characterize, the condition arranging in above-mentioned step 105 can be:

Q _target+CIO _target＞Q _source+CIO _source+H _1d/2；(13)

Wherein, described H _1dfor switching sluggishness, CIO _targetfor measuring skew, CIO in Target cell _sourcefor measuring skew in Serving cell; Wherein, above-mentioned CIO _targetand CIO _sourcevalue may be 0, H _1dvalue may be also 0.

If Q _sourceand Q _targetall adopt route loss to characterize, above-mentioned formula (13) can be transformed to:

Q _target+CIO _target＜Q _source+CIO _source+H _1d/2；(14)

Further, the changing method that the embodiment of the present invention provides can be at Q _sourceand Q _targetbetween meet arrange condition after, can further judge Q _sourceand Q _targetbetween meet this state of condition arranging and whether last till preset time value, if arrived, further informing network side again, so that network switches to Target cell by terminal from Serving cell; If do not arrived, without informing network side.Like this, can prevent from, because of the switching of the channel quality repeatedly Serving cell that sudden change brings fast of carrier frequency, having reduced system effectiveness.

Can a preset Time-To-Trigger timer such as, UE this locality, work as Q _sourceand Q _targetbetween meet arrange condition time, start this Time-To-Trigger timer; After this Time-To-Trigger timer starts, if Q _sourceand Q _targetbetween do not meet the condition arranging, timer stops and zero clearing; If Q _sourceand Q _targetbetween meet the condition arranging, and be continued until timer preset time value, UE determines now to meet switching condition, can informing network side.

In addition, the embodiment of the present invention can be according to the measured value size of the channel quality of each carrier frequency of above-mentioned Serving cell, chooses measured value the maximum as above-mentioned Serving cell comprehensive channel quality Q _source; The measured value of the channel quality of each carrier frequency of measurement target community is as a comprehensive channel quality Q of Target cell _target; Respectively by Serving cell comprehensive channel quality Q _sourceeach comprehensive channel quality Q with Target cell _targetsubstitution formula (5) or formula (6), as long as formula (5) or formula (6) are set up, and the lasting time arrives and lasts till timer preset time value, UE determines now to meet switching condition, can informing network side, so that network side switches to Target cell by terminal from Serving cell.

The embodiment of the present invention one is example take terminal as executive agent, introduce a kind of changing method that the embodiment of the present invention provides, the embodiment of the present invention is no longer dependent on the switching that only the main carrier measurement of Serving cell and Target cell is triggered Serving cell, but all carrier waves of Serving cell and Target cell are all carried out to comprehensive assessment, obtain comparing after the comprehensive channel quality of Serving cell and Target cell, and carry out triggering terminal switching according to comparative result, the channel quality that can evade like this assistant carrier frequency of the Target cell after switching is worse than the problem of the assistant carrier frequency channel quality of Serving cell far away, improve the accuracy that switch Serving cell, and then can improve the communication quality of terminal.

Embodiment bis-:

Refer to Fig. 6, a kind of changing method flow chart that Fig. 6 provides for the embodiment of the present invention two.As shown in Figure 6, the method can comprise step:

The channel quality of each carrier frequency of the Serving cell that 601, receiving terminal reports, and the channel quality of each carrier frequency of Target cell;

602, according to the comprehensive channel quality Q of Serving cell described in the channel quality assessment of each carrier frequency of above-mentioned Serving cell _source;

603, according to the comprehensive channel quality Q of Target cell described in the channel quality assessment of each carrier frequency of above-mentioned Target cell _target;

604, at above-mentioned Q _sourceand Q _targetbetween meet arrange time, terminal is switched to Target cell from Serving cell.

Wherein, between above-mentioned step 602 and step 603, there is not order successively.

Further, the changing method that the present embodiment two provides can also be at above-mentioned Q _sourcewith above-mentioned Q _targetbetween meet set condition after, further judge above-mentioned Q _sourcewith above-mentioned Q _targetbetween meet this state that imposes a condition and whether last till preset time value, if arrived, more further terminal is switched to Target cell from Serving cell; If do not arrive, do not switch.Like this, can prevent from, because of the switching of the channel quality repeatedly Serving cell that sudden change brings fast of carrier frequency, having reduced system effectiveness.

Under above-mentioned sight such as, network side can a preset Time-To-Trigger timer, as upper Q _sourceand Q _targetbetween meet set condition time, start this Time-To-Trigger timer; After this Time-To-Trigger timer starts, if Q _sourceand Q _targetbetween do not meet the condition of setting, timer stops and zero clearing; If Q _sourceand Q _targetbetween meet the condition of setting, and be continued until timer preset time value, network side is determined now to meet switching condition, terminal can be switched to Target cell from Serving cell.

For instance, the concrete reality of above-mentioned step 602 can be adopted with the following method:

According to the measured value size of channel quality of each carrier frequency of the Serving cell receiving in above-mentioned step 601, choose the superior of measured value as above-mentioned Serving cell comprehensive channel quality Q _source.

Correspondingly, above-mentioned step 603 also can adopt following similar approach:

According to the measured value size of channel quality of each carrier frequency of the Target cell receiving in above-mentioned step 601, choose the superior of measured value as described Target cell comprehensive channel quality Q _target.

Due to, the parameter that can be used for the channel quality that characterizes a carrier frequency has a variety of, such as received power, signal to noise ratio, route loss etc., for the ease of the Q in above-mentioned step 604 _sourceand Q _targetcomparison, the parameter type of channel quality for each carrier frequency of characterizing Serving cell in above-mentioned step 601 need to be identical with the parameter type of the channel quality of each carrier frequency for characterizing Target cell.

Wherein, network side can or adopt designated lane to indicate UE for characterizing the parameter of channel quality by the related signaling between expansion and UE, the form that can also further indicate the measured value of UE reporting channel quality to adopt, as report absolute value, relative value or absolute value+relative value.

For instance, the concrete reality of above-mentioned step 602 also can be adopted with the following method:

The measured value of the channel quality of each carrier frequency of above-mentioned Serving cell is carried out to calculation process, obtain calculation process result;

Using above-mentioned calculation process result as above-mentioned Serving cell comprehensive channel quality Q _source.

Correspondingly, the concrete reality of above-mentioned step 603 also can adopt similar approach:

The measured value of the channel quality of each carrier frequency of above-mentioned Target cell is carried out to calculation process, obtain calculation process result;

Using above-mentioned calculation process result as above-mentioned Target cell comprehensive channel quality Q _target.

Obtain Serving cell comprehensive channel quality Q if adopt above-mentioned mode _sourceand Target cell comprehensive channel quality Q _target, the part of setting in above-mentioned step 604 can adopt formula (5) or formula (6), if Serving cell comprehensive channel quality Q _sourceand Target cell comprehensive channel quality Q _targetmeet formula (5) or formula (6), terminal is switched to Target cell from Serving cell; Otherwise, do not switch.

For instance, the concrete reality of above-mentioned step 602 also can adopt method as shown in Figure 2 to obtain Serving cell comprehensive channel quality Q _source;

Correspondingly, the concrete reality of above-mentioned step 603 also can adopt method as shown in Figure 3 to obtain Target cell comprehensive channel quality Q _target; The present embodiment is not repeated at this.

For instance, the concrete reality of above-mentioned step 602 can also adopt method as shown in Figure 4 to obtain Serving cell comprehensive channel quality Q _source;

Correspondingly, the concrete reality of above-mentioned step 603 also can adopt method as shown in Figure 5 to obtain Target cell comprehensive channel quality Q _target; The present embodiment is not repeated at this.

Obtain Serving cell comprehensive channel quality Q if adopt above-mentioned Fig. 2 mode _sourceand adopt Fig. 3 mode to obtain Target cell comprehensive channel quality Q _target, or adopt Fig. 4 mode to obtain Serving cell comprehensive channel quality Q _sourceand adopt Fig. 5 mode to obtain Target cell comprehensive channel quality Q _target, the condition of setting in above-mentioned step 604 can adopt formula (13) or formula (14), if Serving cell comprehensive channel quality Q _sourceand Target cell comprehensive channel quality Q _targetmeet formula (13) or formula (14), terminal is switched to Target cell from Serving cell; Otherwise, do not switch.

The embodiment of the present invention two is example take network side as executive agent, introduce a kind of changing method that the embodiment of the present invention provides, the embodiment of the present invention is no longer dependent on the switching that only the main carrier measurement of Serving cell and Target cell is triggered Serving cell, but all carrier waves of Serving cell and Target cell are all carried out to comprehensive assessment, obtain comparing after the comprehensive channel quality of Serving cell and Target cell, and trigger Serving cell switching according to comparative result, the channel quality that can evade like this assistant carrier frequency of the Target cell after switching is worse than the problem appearance of the assistant carrier frequency channel quality of Serving cell far away, improve the accuracy that switch Serving cell, and then can improve the communication quality of terminal.

Embodiment tri-:

Refer to Fig. 7 a, the structure chart of a kind of terminal that Fig. 7 a provides for the embodiment of the present invention three.As shown in Figure 7a, this terminal can comprise:

The first measuring unit 701, for the channel quality of each carrier frequency of the Serving cell of measuring terminals;

The first assessment unit 702, for the comprehensive channel quality Q of the channel quality assessment Serving cell measured according to the first measuring unit 701 _source;

The second measuring unit 703, for the channel quality of each carrier frequency of measurement target community;

The second assessment unit 704, for the comprehensive channel quality Q of the channel quality assessment Target cell measured according to the second measuring unit 703 _target;

The first judging unit 705, for judging above-mentioned Q _sourceand Q _targetbetween whether meet the condition of setting;

Notification unit 706, in the judged result of the first above-mentioned judging unit 705 when being, informing network side, so that network side switches to Target cell by terminal from Serving cell.

See also Fig. 7 b, the another kind of terminal structure figure that Fig. 7 b provides for the embodiment of the present invention three.Compared with the terminal shown in Fig. 7 a, the terminal shown in Fig. 7 b has increased by second judging unit 707;

Wherein, the second judging unit 707, in the judged result of the first above-mentioned judging unit 705 when being, judge above-mentioned Q _sourcewith above-mentioned Q _targetbetween meet the state of condition of setting and whether last till preset time value;

Notification unit 706, while specifically for being in the judged result of the first judging unit 705 and the second judging unit 707 being, informing network side, so that network side switches to Target cell by terminal from Serving cell.

Refer to Fig. 8 a, a kind of structure chart that Fig. 8 a is the first assessment unit 702 of providing in the embodiment of the present invention two.As shown in Figure 8 a, the first above-mentioned assessment unit 702 can comprise:

First chooses subelement 7021, for according to the measured value size of the channel quality of each carrier frequency of above-mentioned Serving cell, chooses the superior of measured value as above-mentioned Serving cell comprehensive channel quality Q _source.

Correspondingly, see also Fig. 8 b, the second assessment singly a kind of structure chart of 704 yuan of Fig. 8 b for providing in the embodiment of the present invention two.As shown in Figure 8 b, the second above-mentioned assessment unit 704 can comprise:

Second chooses subelement 7041, according to the measured value size of the channel quality of each carrier frequency of above-mentioned Target cell, chooses the superior of measured value as above-mentioned Target cell comprehensive channel quality Q _target.

For the ease of the Q in the first above-mentioned judging unit 705 _sourceand Q _targetcomparison, the parameter type of channel quality for each carrier frequency of characterizing Serving cell in the first above-mentioned measuring unit 701 need to be identical with the parameter type of the channel quality of each carrier frequency for the Target cell that characterizes of the second measuring unit 703.

Refer to Fig. 9 a, the another kind of structure chart that Fig. 9 a is the first assessment unit 702 of providing in the embodiment of the present invention two.As shown in Fig. 9 a, the first above-mentioned assessment unit 702 can comprise:

The first calculation process subelement 7022, for the measured value of the channel quality of each carrier frequency of above-mentioned Serving cell is carried out to calculation process, obtains calculation process result; Using above-mentioned calculation process result as above-mentioned Serving cell comprehensive channel quality Q _source.

Correspondingly, see also Fig. 9 b, the another kind of structure chart that Fig. 9 b is the second assessment unit 704 of providing in the embodiment of the present invention two.As shown in Fig. 9 b, the second above-mentioned assessment unit 704 can comprise:

The second calculation process subelement 7042, for the measured value of the channel quality of each carrier frequency of above-mentioned Target cell is carried out to calculation process, obtains calculation process result; Using above-mentioned calculation process result as above-mentioned Target cell comprehensive channel quality Q _target.

For instance, the first above-mentioned judge module 705 specifically can be for judging above-mentioned Q _sourceand Q _targetbetween whether meet formula (5) or formula (6).

Refer to Figure 10 a, the another kind of structure chart that Figure 10 a is the first assessment unit 702 of providing in the embodiment of the present invention two.As shown in Figure 10 a, the first above-mentioned assessment unit 702 can comprise:

The first computation subunit 7023, for utilizing the signal interference ratio of each carrier frequency of measured value calculation services community of channel quality of each above-mentioned carrier frequency; Calculate the channel quality indication of each carrier frequency of described Serving cell according to the signal interference ratio of each above-mentioned carrier frequency;

The 3rd calculation process subelement 7024, for the channel quality indication of each carrier frequency of above-mentioned Serving cell is carried out to calculation process, obtains calculation process result; Using above-mentioned operation result as above-mentioned Serving cell comprehensive channel quality Q _source.

Correspondingly, see also Figure 10 b, the another kind of structure chart that Figure 10 b is the second assessment unit 704 of providing in the embodiment of the present invention two.As shown in Figure 10 b, the second above-mentioned assessment unit 704 can comprise:

The second computation subunit 7043, calculates the signal interference ratio of each carrier frequency of Target cell for the measured value of the channel quality that utilizes each above-mentioned carrier frequency; Calculate the channel quality indication of each carrier frequency of above-mentioned Target cell according to the signal interference ratio of each above-mentioned carrier frequency;

The 4th calculation process subelement 7044, for the channel quality indication of each carrier frequency of above-mentioned Target cell is carried out to calculation process, obtains calculation process result; Using above-mentioned calculation process result as above-mentioned Target cell comprehensive channel quality Q _target.

Refer to Figure 11 a, the another kind of structure chart that Figure 11 a is the first assessment unit 702 of providing in the embodiment of the present invention two.As shown in Figure 11 a, the first above-mentioned assessment unit 702 can comprise:

The 3rd computation subunit 7025, for utilizing the signal interference ratio of each carrier frequency of measured value calculation services community of channel quality of each above-mentioned carrier frequency; Calculate the channel quality indication of each carrier frequency of above-mentioned Serving cell according to the signal interference ratio of each above-mentioned carrier frequency;

First obtains subelement 7026, for the corresponding relation with transmission block size according to channel quality indication, obtains the transmission block size of each carrier frequency of above-mentioned Serving cell;

The 5th calculation process subelement 7027, for the transmission block size of each carrier frequency of above-mentioned Serving cell is carried out to calculation process, obtains calculation process result; Using above-mentioned calculation process result as above-mentioned Serving cell comprehensive channel quality Q _source.

Correspondingly, see also Figure 11 b, the another kind of structure chart that Figure 11 b is the second assessment unit 704 of providing in the embodiment of the present invention two.As shown in Figure 11 b, the second above-mentioned assessment unit 704 can comprise:

The 4th computation subunit 7045, for utilizing the measured value of channel quality of each above-mentioned carrier frequency to calculate the signal interference ratio of Target cell each carrier frequency; Calculate the channel quality indication of each carrier frequency of above-mentioned Target cell according to the signal interference ratio of each above-mentioned carrier frequency;

Second obtains subelement 7046, according to the corresponding relation of channel quality indication and transmission block size, obtains the transmission block size of each carrier frequency of above-mentioned Target cell;

The 6th calculation process subelement 7047, for the transmission block size of each carrier frequency of above-mentioned Target cell is carried out to calculation process, obtains calculation process result; Using above-mentioned calculation process result as above-mentioned Target cell comprehensive channel quality Q _target.

See also Figure 11 c, a kind of structure chart that Figure 11 c is the first judging unit 705 of providing in the embodiment of the present invention two.As shown in Figure 11 c, it is one of following that the first above-mentioned judging unit 705 can comprise::

The first judgment sub-unit 7051, for judging above-mentioned Q _targetwhether be better than above-mentioned Q _source;

The second judgment sub-unit 7052, for judging above-mentioned Q _targetwhether be better than above-mentioned Q _sourcewith switch sluggish and;

The 3rd judgment sub-unit 7053, for judging above-mentioned Q _targetthat measure skew with Target cell and whether be better than above-mentioned Q _sourcewith Serving cell measure skew and;

The 4th judgment sub-unit, for judging above-mentioned Q _targetthat measure skew with Target cell and whether be better than above-mentioned Q _sourcemeasure skew with Serving cell, switch sluggish and.

A kind of terminal that the embodiment of the present invention three provides, be no longer dependent on the switching that only the main carrier measurement of Serving cell and Target cell is triggered Serving cell, but all carrier waves of Serving cell and Target cell are all carried out to comprehensive assessment, obtain comparing after the comprehensive channel quality of Serving cell and Target cell, and trigger Serving cell switching according to comparative result, the channel quality that can evade like this assistant carrier frequency of the Target cell after switching is worse than the problem appearance of the assistant carrier frequency channel quality of Serving cell far away, can improve the accuracy that terminal is switched, and then can improve the communication quality of terminal.

Embodiment tetra-:

Refer to Figure 12 a, a kind of network equipment structure chart that Figure 12 a provides for the embodiment of the present invention four.As shown in Figure 12 a, this network equipment can comprise:

Receiving element 1201, the channel quality of each carrier frequency of the Serving cell reporting for receiving terminal, and the channel quality of each carrier frequency of Target cell;

The 3rd assessment unit 1202, for according to the comprehensive channel quality Q of Serving cell described in the channel quality assessment of each carrier frequency of above-mentioned Serving cell _source

The 4th assessment unit 1203, for according to the comprehensive channel quality Q of Target cell described in the channel quality assessment of each carrier frequency of above-mentioned Target cell _target;

The 3rd judging unit 1204, for judging above-mentioned Q _sourcewith above-mentioned Q _targetbetween whether meet the condition of setting;

Switch unit 1205, is yes for the judged result of the 3rd judging unit 1204 above-mentioned, terminal is switched to Target cell from Serving cell.

See also Figure 12 b, the another kind of network equipment structure chart that Figure 12 b provides for the embodiment of the present invention four.Compared with the network equipment shown in Figure 12 a, the network equipment shown in Figure 12 b has increased the 4th judging unit 1206;

Wherein, the 4th judging unit 1206, in the judged result of the 3rd above-mentioned judging unit 1204 when being, further judge Q _sourceand Q _targetbetween meet the state that imposes a condition and whether last till preset time value;

Switch unit 1205, while being, switches to terminal above-mentioned Target cell specifically for being in the judged result of the 3rd judging unit 1204 and the 4th judging unit 1206 from Serving cell.

Refer to Figure 13 a, a kind of structure chart that Figure 13 a is the 3rd assessment unit that provides in the embodiment of the present invention four.As shown in Figure 13 a, the 3rd above-mentioned assessment unit 1202 can comprise:

The 3rd chooses subelement 12021, for according to the size of the measured value of the channel quality of each carrier frequency of above-mentioned Serving cell, chooses the superior of measured value as above-mentioned Serving cell comprehensive channel quality Q _source.

Correspondingly, see also Figure 13 b, a kind of structure chart that Figure 13 b is the 4th assessment unit that provides in the embodiment of the present invention four.As shown in Figure 13 b, the 4th above-mentioned assessment unit 1203 can comprise:

The 4th chooses subelement 22031, for according to the size of the channel quality measurements of each carrier frequency of above-mentioned Target cell, chooses the superior of measured value as above-mentioned Target cell comprehensive channel quality Q _target.

Wherein, for the ease of the Q in the 3rd above-mentioned judging unit 1204 _sourceand Q _targetcomparison, the parameter type of channel quality for each carrier frequency of characterizing Serving cell in above-mentioned receiving element 1201 need to be identical with the parameter type of the channel quality of each carrier frequency for characterizing Target cell.

Refer to Figure 14 a, the another kind of structure chart that Figure 14 a is the 3rd assessment unit that provides in the embodiment of the present invention four.As shown in Figure 14 a, the 3rd above-mentioned assessment unit 1202 can comprise:

First processes subelement 12022, for the measured value of the channel quality of each carrier frequency of above-mentioned Serving cell is carried out to calculation process, obtains calculation process result; Using above-mentioned calculation process result as above-mentioned Serving cell comprehensive channel quality Q _sourc.

Correspondingly, see also Figure 14 b, the another kind of structure chart that Figure 14 b is the 4th assessment unit that provides in the embodiment of the present invention four.As shown in Figure 14 b, the 4th above-mentioned assessment unit 1203 can comprise:

Second processes subelement 12032, for the measured value of the channel quality of each carrier frequency of above-mentioned Target cell is carried out to calculation process, obtains calculation process result; Using above-mentioned calculation process result as above-mentioned Target cell comprehensive channel quality Q _target.

Refer to Figure 15 a, the another kind of structure chart that Figure 15 a is the 3rd assessment unit that provides in the embodiment of the present invention four.As shown in Figure 15 a, the 3rd above-mentioned assessment unit 1202 can comprise:

The 3rd processes subelement 12023, for calculate the signal interference ratio of each carrier frequency of above-mentioned Serving cell according to the measured value of the channel quality of each carrier frequency of above-mentioned Serving cell; Calculate the channel quality indication of each carrier frequency of described Serving cell according to the signal interference ratio of each above-mentioned carrier frequency;

The 4th processes subelement 12024, for the channel quality indication of each carrier frequency of above-mentioned Serving cell is carried out to calculation process, obtains calculation process result; Using above-mentioned calculation process result as above-mentioned Serving cell comprehensive channel quality Q _source.

Correspondingly, see also Figure 15 b, the another kind of structure chart that Figure 15 b is the 4th assessment unit that provides in the embodiment of the present invention four.As shown in Figure 15 b, the 4th above-mentioned assessment unit 1203 can comprise:

The 5th processes subelement 12033, for calculate the signal interference ratio of each carrier frequency of above-mentioned Target cell according to the measured value of the channel quality of each carrier frequency of above-mentioned Target cell; Calculate the channel quality indication of each carrier frequency of above-mentioned Target cell according to the signal interference ratio of each above-mentioned carrier frequency;

The 6th processes subelement 12034, for the channel quality indication of each carrier frequency of above-mentioned Target cell is carried out to calculation process, obtains calculation process result; Using above-mentioned calculation process result as above-mentioned Target cell comprehensive channel quality Q _target.

Refer to Figure 16 a, the another kind of structure chart that Figure 16 a is the 3rd assessment unit that provides in the embodiment of the present invention four.As shown in Figure 16 a, the 3rd above-mentioned assessment unit 1202 can comprise:

The 7th processes subelement 12025, for calculate the signal interference ratio of each carrier frequency of above-mentioned Serving cell according to the measured value of the channel quality of each carrier frequency of above-mentioned Serving cell; Calculate the channel quality indication of each carrier frequency of above-mentioned Serving cell according to the signal interference ratio of each above-mentioned carrier frequency; According to the corresponding relation of channel quality indication and transmission block size, obtain the transmission block size of each carrier frequency of above-mentioned Serving cell;

The 8th processes subelement 12026, and the transmission block size of each carrier frequency of above-mentioned Serving cell is carried out to calculation process, obtains calculation process result; Using above-mentioned calculation process result as described Serving cell comprehensive channel quality Q _source.

Correspondingly, see also Figure 16 b, the another kind of structure chart that Figure 16 b is the 4th assessment unit that provides in the embodiment of the present invention four.As shown in Figure 16 b, the 4th above-mentioned assessment unit 1203 can comprise:

The 9th processes subelement 12035, for calculate the signal interference ratio of each carrier frequency of above-mentioned Target cell according to the measured value of the channel quality of each carrier frequency of above-mentioned Target cell; Calculate the channel quality indication of each carrier frequency of above-mentioned Target cell according to the signal interference ratio of each above-mentioned carrier frequency; According to the corresponding relation of channel quality indication and transmission block size, obtain the transmission block size of each carrier frequency of above-mentioned Target cell;

The tenth processes subelement 12036, for the transmission block size of each carrier frequency of above-mentioned Target cell is carried out to calculation process, obtains calculation process result; Using above-mentioned calculation process result as above-mentioned Target cell comprehensive channel quality Q _target.

See also Figure 16 c, a kind of structure chart that Figure 11 c is the 3rd judging unit 1204 that provides in the embodiment of the present invention four.As shown in Figure 16 c, it is one of following that the 3rd above-mentioned judging unit 1204 can comprise::

The 5th judgment sub-unit 12041, for judging above-mentioned Q _targetwhether be better than above-mentioned Q _source;

The 6th judgment sub-unit 12042, for judging above-mentioned Q _targetwhether be better than above-mentioned Q _sourcewith switch sluggish and;

The 7th judgment sub-unit 12043, for judging above-mentioned Q _targetthat measure skew with Target cell and whether be better than above-mentioned Q _sourcewith Serving cell measure skew and;

The 8th judgment sub-unit 12044, for judging above-mentioned Q _targetthat measure skew with Target cell and whether be better than above-mentioned Q _sourcemeasure skew with Serving cell, switch sluggish and.

A kind of network equipment that the embodiment of the present invention four provides is no longer dependent on the switching that only the main carrier measurement of Serving cell and Target cell is triggered Serving cell, but all carrier waves of Serving cell and Target cell are all carried out to comprehensive assessment, obtain comparing after the comprehensive channel quality of Serving cell and Target cell, and trigger Serving cell switching according to comparative result, the channel quality that can evade like this assistant carrier frequency of the Target cell after switching is worse than the problem appearance of the assistant carrier frequency channel quality of Serving cell far away, thereby can improve the accuracy that terminal is switched, and then can improve the communication quality of terminal.

One of ordinary skill in the art will appreciate that: all or part of step that realizes said method embodiment can complete by the relevant hardware of program command, aforesaid program can be stored in a computer read/write memory medium, this program, in the time carrying out, is carried out the step that comprises said method embodiment; And aforesaid storage medium comprises: various media that can be program code stored such as read-only memory (Read Only Memory, ROM), random access device (Random Access Memory, RAM), magnetic disc or CDs.

A kind of the changing method above embodiment of the present invention being provided and terminal, the network equipment are described in detail, applied specific case herein principle of the present invention and execution mode are set forth, the explanation of above embodiment is just for helping to understand method of the present invention and core concept thereof; , for one of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention meanwhile.

Claims (8)

1. a changing method, is characterized in that, comprising:

The channel quality of each carrier frequency of the Serving cell of terminal measuring terminals;

Described terminal is according to the comprehensive channel quality Q of Serving cell described in the channel quality assessment of each carrier frequency of described Serving cell _source;

The channel quality of each carrier frequency of described terminal measurement target community;

Described terminal is according to the comprehensive channel quality Q of Target cell described in the channel quality assessment of each carrier frequency of described Target cell _target;

At described Q _sourcewith described Q _targetwhile meeting the condition of setting, described terminal informing network side, so that network side switches to Target cell by described terminal from Serving cell;

Wherein, described terminal is according to the comprehensive channel quality Q of Serving cell described in the channel quality assessment of each carrier frequency of described Serving cell _sourcestep comprise:

Described terminal utilizes the measured value of the channel quality of each carrier frequency of described Serving cell to calculate the signal interference ratio of each carrier frequency of described Serving cell;

Described terminal is calculated the channel quality indication of each carrier frequency of described Serving cell according to the signal interference ratio of each carrier frequency of described Serving cell;

Described terminal is the corresponding relation with transmission block size according to channel quality indication, obtains the transmission block size of each carrier frequency of described Serving cell;

The transmission block size of each carrier frequency of described Serving cell is carried out calculation process by described terminal, obtains calculation process result;

The comprehensive channel quality Q of described terminal using described calculation process result as described Serving cell _source;

Described terminal is according to the comprehensive channel quality Q of Target cell described in the channel quality assessment of each carrier frequency of described Target cell _targetstep comprise:

Described terminal utilizes the measured value of the channel quality of each carrier frequency of described Target cell to calculate the signal interference ratio of each carrier frequency of described Target cell;

Described terminal is calculated the channel quality indication of each carrier frequency of described Target cell according to the signal interference ratio of each carrier frequency of described Target cell;

Described terminal is the corresponding relation with transmission block size according to channel quality indication, obtains the transmission block size of each carrier frequency of described Target cell;

The transmission block size of each carrier frequency of described Target cell is carried out calculation process by described terminal, obtains calculation process result;

The comprehensive channel quality Q of described terminal using described calculation process result as described Target cell _target.

2. the method for claim 1, is characterized in that, at described Q _sourcewith described Q _targetwhile meeting the condition of setting, described method also comprises:

The described Q of described judgement _sourcewith described Q _targetbetween meet the state that imposes a condition and whether last till preset time value;

And described terminal informing network side comprises:

At described Q _sourcewith described Q _targetmeet the condition of setting, and described Q _sourcewith described Q _targetbetween while meeting the state continuance that imposes a condition to preset time value, described terminal informing network side.

3. method as claimed in claim 1 or 2, is characterized in that, the condition of described setting comprises described Q _targetbe better than described Q _source; Or described Q _targetbe better than described Q _sourcewith switch sluggish and; Or described Q _targetthat measure skew with described Target cell and be better than described Q _sourcewith described Serving cell measure skew and; Or described Q _targetthat measure skew with described Target cell and be better than described Q _sourcemeasure skew with described Serving cell, switch sluggish and.

4. a changing method, is characterized in that, comprising:

The channel quality of each carrier frequency of the Serving cell that receiving terminal reports, and the channel quality of each carrier frequency of Target cell;

According to the comprehensive channel quality Q of Serving cell described in the channel quality assessment of each carrier frequency of described Serving cell _source;

According to the comprehensive channel quality Q of Target cell described in the channel quality assessment of each carrier frequency of described Target cell _target;

At described Q _sourcewith described Q _targetwhile meeting the condition of setting, described terminal is switched to Target cell from Serving cell;

Wherein, described according to the comprehensive channel quality Q of Serving cell described in the channel quality assessment of each carrier frequency of described Serving cell _sourcestep comprise:

Utilize the measured value of the channel quality of each carrier frequency of described Serving cell to calculate the signal interference ratio of each carrier frequency of described Serving cell;

Calculate the channel quality indication of each carrier frequency of described Serving cell according to the signal interference ratio of each carrier frequency of described Serving cell;

According to the corresponding relation of channel quality indication and transmission block size, obtain the transmission block size of each carrier frequency of described Serving cell;

The transmission block size of each carrier frequency of described Serving cell is carried out to calculation process, obtain calculation process result;

Comprehensive channel quality Q using described calculation process result as described Serving cell _source;

Described according to the comprehensive channel quality Q of Target cell described in the channel quality assessment of each carrier frequency of described Target cell _targetstep comprise:

Utilize the measured value of the channel quality of each carrier frequency of described Target cell to calculate the signal interference ratio of each carrier frequency of described Target cell;

Calculate the channel quality indication of each carrier frequency of described Target cell according to the signal interference ratio of each carrier frequency of described Target cell;

According to the corresponding relation of channel quality indication and transmission block size, obtain the transmission block size of each carrier frequency of described Target cell;

The transmission block size of each carrier frequency of described Target cell is carried out to calculation process, obtain calculation process result;

Comprehensive channel quality Q using described calculation process result as described Target cell _target.

5. a terminal, is characterized in that, comprising:

The first measuring unit, for measuring the channel quality of each carrier frequency of Serving cell of this terminal;

The first assessment unit, for according to the comprehensive channel quality Q of the channel quality assessment Serving cell of each carrier frequency of described Serving cell _source;

The second measuring unit, for the channel quality of each carrier frequency of measurement target community;

The second assessment unit, for according to the comprehensive channel quality Q of the channel quality assessment Target cell of each carrier frequency of described Target cell _target;

The first judging unit, for judging described Q _sourcewith described Q _targetbetween whether meet the condition of setting;

Notification unit, in the judged result of described the first judging unit when being, informing network side, so that network side switches to Target cell by terminal from Serving cell;

Described the first assessment unit comprises:

The 3rd computation subunit, for utilizing the measured value of channel quality of each carrier frequency of described Serving cell to calculate the signal interference ratio of each carrier frequency of described Serving cell; Calculate the channel quality indication of each carrier frequency of described Serving cell according to the signal interference ratio of each carrier frequency of described Serving cell;

First obtains subelement, for the corresponding relation with transmission block size according to channel quality indication, obtains the transmission block size of each carrier frequency of described Serving cell;

The 5th calculation process subelement, for the transmission block size of each carrier frequency of described Serving cell is carried out to calculation process, obtains calculation process result; Comprehensive channel quality Q using described calculation process result as described Serving cell _source;

Described the second assessment unit comprises:

The 4th computation subunit, for utilizing the measured value of channel quality of described each carrier frequency to calculate the signal interference ratio of each carrier frequency of described Target cell; Calculate the channel quality indication of each carrier frequency of described Target cell according to the signal interference ratio of each carrier frequency of described Target cell;

Second obtains subelement, according to the corresponding relation of channel quality indication and transmission block size, obtains the transmission block size of each carrier frequency of described Target cell;

The 6th calculation process subelement, for the transmission block size of each carrier frequency of described Target cell is carried out to calculation process, obtains calculation process result; Comprehensive channel quality Q using described calculation process result as described Target cell _target.

6. terminal as claimed in claim 5, is characterized in that, also comprises:

The second judging unit, in the judged result of described the first judging unit when being, judge described Q _sourcewith described Q _targetbetween meet the state that imposes a condition and whether last till preset time value;

Described notification unit, while specifically for being in the judged result of described the first judging unit and described the second judging unit being, informing network side, so that network side switches to Target cell by described terminal from Serving cell.

7. the terminal as described in claim 5 or 6, is characterized in that, described the first judging unit comprises:

The first judgment sub-unit, for judging described Q _targetwhether be better than described Q _source;

Or comprise, the second judgment sub-unit, for judging described Q _targetwhether be better than described Q _sourcewith switch sluggish and;

Or comprise, the 3rd judgment sub-unit, for judging described Q _targetthat measure skew with Target cell and whether be better than described Q _sourcewith Serving cell measure skew and;

Or comprise, the 4th judgment sub-unit, for judging described Q _targetthat measure skew with Target cell and whether be better than described Q _sourcemeasure skew with Serving cell, switch sluggish and.

8. a network equipment, is characterized in that, comprising:

Receiving element, the channel quality of each carrier frequency of the Serving cell reporting for receiving terminal, and the channel quality of each carrier frequency of Target cell;

The 3rd assessment unit, for according to the comprehensive channel quality Q of Serving cell described in the channel quality assessment of each carrier frequency of described Serving cell _source;

The 4th assessment unit, for according to the comprehensive channel quality Q of Target cell described in the channel quality assessment of each carrier frequency of described Target cell _target;

The 3rd judging unit, for judging described Q _sourceand Q _targetbetween whether meet the condition of setting;

Switch unit, is yes for the judged result at described the 3rd judging unit, described terminal is switched to described Target cell from described Serving cell;

Wherein, above-mentioned the 3rd assessment unit comprises:

The 7th processes subelement, for calculate the signal interference ratio of each carrier frequency of described Serving cell according to the measured value of the channel quality of each carrier frequency of described Serving cell; Calculate the channel quality indication of each carrier frequency of described Serving cell according to the signal interference ratio of described each carrier frequency; According to the corresponding relation of channel quality indication and transmission block size, obtain the transmission block size of each carrier frequency of described Serving cell;

The 8th processes subelement 12026, and the transmission block size of each carrier frequency of described Serving cell is carried out to calculation process, obtains calculation process result; Using described calculation process result as described Serving cell comprehensive channel quality Q _source;

Described the 4th assessment unit comprises:

The 9th processes subelement, for calculate the signal interference ratio of each carrier frequency of described Target cell according to the measured value of the channel quality of each carrier frequency of described Target cell; Calculate the channel quality indication of each carrier frequency of described Target cell according to the signal interference ratio of described each carrier frequency; According to the corresponding relation of channel quality indication and transmission block size, obtain the transmission block size of each carrier frequency of described Target cell;

The tenth processes subelement, for the transmission block size of each carrier frequency of described Target cell is carried out to calculation process, obtains calculation process result; Using described calculation process result as described Target cell comprehensive channel quality Q _target.

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