CN101616459A - A kind of realization method of cell reselection, terminal and system - Google Patents
A kind of realization method of cell reselection, terminal and system Download PDFInfo
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- CN101616459A CN101616459A CN200810039708A CN200810039708A CN101616459A CN 101616459 A CN101616459 A CN 101616459A CN 200810039708 A CN200810039708 A CN 200810039708A CN 200810039708 A CN200810039708 A CN 200810039708A CN 101616459 A CN101616459 A CN 101616459A
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Abstract
The embodiment of the invention discloses a kind of realization method of cell reselection, terminal and system, described method is: obtain the cell quality value, described sub-district comprises main Serving cell and auxilliary Serving cell at least; Select the sub-district according to described cell quality value; Be stationed to the described sub-district of selecting.Described terminal is: acquiring unit, be used to obtain the cell quality value, and described sub-district comprises main Serving cell and auxilliary Serving cell at least; Selected cell is used for selecting the sub-district according to the cell quality value; Be stationed the unit, be used for being stationed to the sub-district that described selected cell is selected.The embodiment of the invention makes terminal when the double small district of employing HSDPA technology, can carry out the sub-district gravity treatment.
Description
Technical field
The present invention relates to the mobile communication technology field, be specifically related to a kind of realization method of cell reselection, terminal and system.
Background technology
3GPP (3rd Generation Partnership Project, third generation partner program) introduced HSPA (High Speed Packet Access at the Release5 version, high-speed packet inserts) technology, this technology comprises HSUPA (High Speed Uplink Packet Access, high speed uplink packet inserts) technology and HSDPA (High Speed Downlink Packet Access, high speed downlink packet inserts) technology.
Have at present at the research project that improves the downlink transmission data rate of user when adopting the HSDPA technology, that this research project is mainly discussed is UE (User Equipment, terminal) and the situation of two alien-frequency districts of supporting HSDPA when carrying out data communication simultaneously, wherein two alien-frequency districts are usually located under the same antenna of same base station, be called main Serving cell and auxilliary Serving cell, and, generally, up link and down link are arranged between main Serving cell and the UE, and have only down link between auxilliary Serving cell and the UE.
At WCDMA (Wideband Code Division Multiple Access, Wideband Code Division Multiple Access (WCDMA)) in the system, there is the free time in UE and is connected two states, connection status is divided into CELL_DCH, CELL_FACH, CELL_PCH, four kinds of states of URA_PCH again, and four kinds of state activity reduce successively: wherein the CELL_DCH state is used for the transfer of data of big flow; When the activity reduction of UE, when data quantity transmitted obviously reduced, system transferred the state of UE to the CELL_FACH state, and the CELL_FACH state is fit to the transfer of data of smallest number; When the activity of UE reduced again, the state of UE transferred CELL_PCH state or even the minimum URA_PCH state of activity to, and under this two states, UE can only monitoring seek channel, and can not carry out any transfer of data.
In wireless communication system; through regular meeting because all factors or the system failure and cause taking place between UE and the wireless network Radio Link Failure in the wireless transmission environment; and make normally using system service of user, at this moment, UE then needs to carry out the sub-district gravity treatment and regains system service.
In existing single cellular technology, the flow process of sub-district gravity treatment is as follows: when Radio Link Failure has taken place the UE that is in the CELL_DCH state, be transformed into the CELL_FACH state earlier, again the cell quality value sorted according to the R criterion, select the highest sub-district of ordering to be stationed.And the UE that is in idle condition, CELL_FACH state, CELL_PCH state, URA_PCH state also needs to monitor the signal of current service cell and adjacent area, selects the best sub-district of cell quality value to be stationed then.When the neighboring area signal measured value is measured, UE measures the signal of homogeneous-frequency adjacent-domain and alien frequencies adjacent area, draw the cell quality value according to the R criterion then, select the good and sub-district that reaches Tselection (sub-district gravity treatment timer duration) signal duration of cell quality value as current service cell, the Tselection parameter is indicated in system broadcast information.
The concrete formula of R criterion is:
Rs＝Qmap，s+Qhyst
s
Rn＝Qmap，n-Qoffet
s，n
Rs is the signal measurements of current service cell, and Qmeas, s are the measured values of the current service cell obtained of UE, Qhyst
sBe that UE is in CELL_PCH, the lagged value of the sub-district gravity treatment that causes during the CELL_FACH state, this value issues by system broadcast message; The signal quality value of current service cell is the measured value of current service cell and the lagged value sum of sub-district gravity treatment.
Rn is the signal measurements of adjacent area, and Qmeas, and n is the measured value of the adjacent area that obtains of UE, Qoffset
S, nBe the adjacent area bias that carries out the sub-district gravity treatment between current service cell and the adjacent area, the adjacent area bias can be provided with and issue in system broadcast message voluntarily; The signal measurements of adjacent area is the poor of nearby region measurement value and adjacent area bias.
In research and practice process to prior art, there is following problem in the present inventor's prior art:
Prior art has only related to single sub-district and has carried out method of cell reselection, and when the double small district of terminal employing HSDPA technology, lacks method of cell reselection.
Summary of the invention
The technical problem that the embodiment of the invention will solve provides a kind of realization method of cell reselection and terminal, makes terminal when the double small district of employing HSDPA technology, can realize the sub-district gravity treatment.
For solving the problems of the technologies described above, embodiment provided by the present invention is achieved through the following technical solutions:
A kind of realization method of cell reselection comprises: obtain the cell quality value, described sub-district comprises main Serving cell and auxilliary Serving cell at least; Select the sub-district according to described cell quality value; Be stationed to the described sub-district of selecting.
A kind of terminal comprises: acquiring unit, be used to obtain the cell quality value, and described sub-district comprises main Serving cell and auxilliary Serving cell at least; Selected cell is used for selecting the sub-district according to the cell quality value; Be stationed the unit, be used for being stationed to the sub-district that described selected cell is selected.
A kind of wireless communication system is characterized in that, comprising: terminal, and be used for selecting the sub-district, and be stationed to the sub-district of selecting according to the cell quality value of obtaining, described sub-district comprises main Serving cell and auxilliary Serving cell at least.
By technique scheme as can be seen, the embodiment of the invention adopts multiple standards to select the good sub-district of cell quality value, makes terminal when the double small district of employing HSDPA technology, can realize the sub-district gravity treatment.
Description of drawings
Fig. 1 is the schematic flow sheet of the embodiment of the invention one;
Fig. 2 is the schematic flow sheet of the embodiment of the invention two;
Fig. 3 is the schematic flow sheet of the embodiment of the invention three;
Fig. 4 is that the ordering of the embodiment of the invention four changes schematic diagram;
Fig. 5 is that the ordering of the embodiment of the invention five changes schematic diagram;
Fig. 6 is that the ordering of the embodiment of the invention six changes schematic diagram;
Fig. 7 is the structural representation of embodiment of the invention terminal.
Embodiment
It is a kind of when the double small district of employing HSDPA technology that the embodiment of the invention provides, and can realize method of cell reselection, terminal and system.
Embodiment one, specify in conjunction with Fig. 1, Fig. 1 is the schematic flow sheet of the embodiment of the invention one.
Step 101: obtain the cell quality value that comprises main Serving cell and auxilliary Serving cell at least;
The cell quality value comprises the cell signal measured value; UE can directly obtain described cell signal measured value, also can draw described cell signal measured value according to the R criterion; And the cell quality value also may comprise native region priority, and described native region priority then comprises multi-carrier district priority and paired plot priority;
Multi-carrier district is the sub-district that multi-carrier service can be provided, and the form with the double small district occurs usually, and as main Serving cell and auxilliary Serving cell, one of them sub-district is called the paired plot of another sub-district.
Step 102: select the sub-district according to described cell quality value.
UE can select according to the cell signal measured value that directly obtains, the cell signal measured value that can draw according to the R criterion or select according to cell signal measured value and native region priority that the R criterion draws does not influence the realization of the embodiment of the invention yet.
Step 103: be stationed to the described sub-district of selecting.
The best sub-district of cell quality value that UE selects in step 102 is stationed; If failure is stationed in the best sub-district of cell quality value, then select other sub-districts to be stationed from high to low successively according to the cell quality value.
Below six embodiment take place to describe behind the Radio Link Failure with the UE that is in the CELL_DCH state; And the concrete standard difference that sorts during at the sub-district gravity treatment and adopt is divided into six embodiment and specifies.
Embodiment two and three pays the utmost attention in main Serving cell and auxilliary Serving cell to be stationed after the gravity treatment, after failure all is stationed in these two sub-districts, reselects in other sub-districts except main Serving cell and auxilliary Serving cell again; Embodiment four to seven selects the highest sub-district of ordering to be stationed after being sorted together in all sub-districts that comprise main Serving cell and auxilliary Serving cell, and does not pay the utmost attention to main Serving cell and auxilliary Serving cell.
Embodiment two, describe in detail in conjunction with Fig. 2, Fig. 2 is the schematic flow sheet of the embodiment of the invention two.
The main Serving cell generation Radio Link Failure of step 201:UE, from the CELL_DCH state exchange to the CELL_FACH state.
After Radio Link Failure had taken place, UE and network side dedicated channel were eliminated, and only keep common signal channel, therefore by the CELL_DCH state exchange to the CELL_FACH state.
Step 202: the cell quality value of obtaining main Serving cell and auxilliary Serving cell.
The cell quality value comprises the cell signal measured value, and the same, this measured value can directly obtain, and also can draw according to the R criterion.
Step 203: described cell quality value is sorted.
Ordering can be sorted according to the cell signal measured value that the R criterion draws, and also can not influence the realization of the embodiment of the invention according to cell signal measured value and native region priority ordering.
Step 204: select the highest sub-district of ordering.
UE selects ordering the highest and reach the sub-district of Tselection signal duration according to the ranking results of step 204.
In addition, when UE directly got access to the cell signal measured value, the order of selection can set in advance and be the auxilliary again Serving cell of former head's Serving cell, or the earlier auxilliary main again Serving cell of Serving cell, does not influence the realization of the embodiment of the invention.Setting in advance under the situation of selecting sequence, step 203 can correspondingly change into according to the permanent order that sets in advance and selecting, and step 204 can be omitted.
Step 205: be stationed to the sub-district of selecting.
UE is stationed and upgrades to the sub-district of selecting, if to the failure of being stationed of the highest sub-district of ordering, then selects other sub-districts to be stationed and to upgrade successively according to ranking results, until in the success of some sub-districts.
Step 206: after being stationed of main Serving cell and auxilliary Serving cell all failed, obtain the cell quality value of other sub-districts except described main Serving cell or auxilliary Serving cell.
Because of preferentially having selected main Serving cell and auxilliary Serving cell not have successfully to 205 in step 202, thus this step with main Serving cell and the eliminating of auxilliary Serving cell outside scope.
Step 207: reselect the sub-district according to the cell quality value.
It is good and reach the sub-district of Tselection signal duration that the cell quality value that draws according to step 206 is reselected signal quality;
This step also can be reselected according to cell signal measured value and multi-carrier district priority that the R criterion obtains.
Step 208: be stationed to the sub-district of reselecting out.
UE is stationed to the sub-district that step 207 is reselected out, if be stationed failure to the best sub-district of cell quality value, then reselect the sub-district successively according to cell quality value order from high to low and is stationed, until successfully being stationed some sub-districts.
UE also can be stationed according to the cell quality value after the ordering then to the ordering of cell quality value before reselecting, and is similar with step 203 and step 204.
Step 209: in the sub-district of being stationed, initiate cell updating course.
UE initiates cell updating course, rebulids with network to be connected.
Mention among the embodiment two and can obtain the cell signal measured value according to the R criterion, three of embodiment are by revising the cell signal measured value that improves multi-carrier district in the R criterion about the signal measurements computing formula of adjacent area.
Embodiment three, describe in detail in conjunction with Fig. 3, Fig. 3 is the schematic flow sheet of the embodiment of the invention three.
The main Serving cell generation Radio Link Failure of step 301:UE, from the CELL_DCH state exchange to the CELL_FACH state.
After Radio Link Failure had taken place, UE and network side dedicated channel were eliminated, and only keep common signal channel, therefore by the CELL_DCH state exchange to the CELL_FACH state.
Step 302: obtain the cell quality value that comprises main Serving cell and auxilliary Serving cell at least.
The cell quality value comprises the cell signal measured value, and this measured value can directly obtain, and also can draw according to the R criterion.
Step 303: after described cell quality value sorted, select the highest sub-district of ordering to be stationed.
Order that the UE basis sets in advance or the cell signal measured value that calculates according to the R criterion sort to main Serving cell and auxilliary Serving cell.
UE is stationed and upgrades to the sub-district of selecting, if to the failure of being stationed of the highest sub-district of ordering, then attempt until success successively according to ranking results.
Step 304: after all failing, obtain the cell signal measured value of other sub-districts except described main Serving cell or auxilliary Serving cell according to amended R criterion to being stationed of main Serving cell and auxilliary Serving cell.
UE modification R criterion about the amended formula of signal measurements computing formula of adjacent area is:
Rn=Qmap, n-coefficient * Qoffset
S, n
Rn is the signal measurements of adjacent area, and Qmeas, n is the measured value of adjacent area, Qoffset
S, nBe the adjacent area bias that carries out the sub-district gravity treatment between current service cell and the adjacent area, the adjacent area bias can be provided with and issue in system broadcast message voluntarily; Coefficient is according to UE ability value; Particularly, for the UE with single carrier ability, this coefficient gets 1; For the UE with multi-carrier capability, this coefficient value scope is between 0 to 1; The signal measurements of adjacent area is that the measured value of adjacent area deducts the adjacent area bias and coefficient is long-pending, numerical value reduces after having the adjacent area bias of UE of multi-carrier capability and multiplication, then makes the preferential selection multi-carrier district of UE with multi-carrier capability be stationed.
Step 305: be stationed to the sub-district of reselecting out according to the cell quality value.
It is good and reach the sub-district of Tselection signal duration that the cell quality value that draws according to step 304 is reselected the cell quality value;
This step also can be reselected according to cell signal measured value and multi-carrier district priority that the R criterion draws;
UE is stationed to the sub-district of reselecting out, if failure is stationed in the best sub-district of cell quality value, then attempts successively until success according to cell quality value order from high to low;
Step 306: in the sub-district of being stationed, initiate cell updating course.
UE initiates cell updating course in the sub-district of successfully being stationed, rebulid with network to be connected.
UE also can be stationed according to ranking results then to the ordering of cell quality value before reselecting.
More than two embodiment pay the utmost attention in main Serving cell and auxilliary Serving cell and carry out the sub-district gravity treatment, improve cell reselection efficiency; Below four embodiment unified selection in all sub-districts then, the standard of foundation is different when just selecting.
Embodiment four sorts according to the priority of cell signal measured value and multi-carrier district, embodiment five is according to the prioritization of cell signal measured value and paired plot, embodiment six takes all factors into consideration according to cell signal measured value, multi-carrier district priority and paired plot priority and sorts, and seven of embodiment revise the R criterion improves multi-carrier district about the formula of the signal measurements of adjacent area cell signal measured value.
Embodiment four,
The main Serving cell generation Radio Link Failure of step 401:UE, from the CELL_DCH state exchange to the CELL_FACH state.
After Radio Link Failure had taken place, UE and network side dedicated channel were eliminated, and only keep common signal channel,
Therefore by the CELL_DCH state exchange to the CELL_FACH state.
Step 402: obtain the cell quality value that comprises main Serving cell and auxilliary Serving cell.
Step 403: the priority according to cell signal measured value and multi-carrier district sorts to all cell quality values.
In the present embodiment, UE does not pay the utmost attention to main Serving cell and auxilliary Serving cell, but directly all cell quality values that comprise main Serving cell and auxilliary Serving cell is sorted;
Ordering can be carried out according to the cell signal measured value earlier, then on the basis of this cell signal measured value ordering again according to the prioritization of multi-carrier district, because of the priority of multi-carrier district is higher than other sub-districts, so in final ordering, multi-carrier district will come before other sub-districts.Ordering between cell signal measured value and the multi-carrier district also can be carried out according to the R criterion.
Referring to Fig. 4, there is co-frequency cell 1,2,3,4, sub-district 1 is UE master's Serving cell, and sub-district 2,3,4 is a homogeneous-frequency adjacent-domain, and sub-district 2 and 3 is a multi-carrier district; The result that UE sorts to four sub-districts according to the R criterion is followed successively by 4,2,1,3 from high to low shown among the figure 41; On this basis, the priority according to multi-carrier district sorts again, and the priority of multi-carrier district 2 is higher than multi-carrier district 3, and then final ranking results is followed successively by 2,3,4,1 from high to low shown among the figure 42.
Also can carry out the ordering that comprises the alien-frequency district of assisting Serving cell according to above co-frequency cell; Also the ordering of co-frequency cell is carried out in the ordering that can carry out alien-frequency district earlier again, does not influence the realization of the embodiment of the invention.
Step 404: select the highest sub-district of ordering to be stationed.
UE selects the highest and sub-district that reach Tselection signal duration of ordering to be stationed according to the ranking results of step 403, if be stationed failure to the highest sub-district of ordering, then selects the sub-district to be stationed successively according to ordering, until successfully being stationed some sub-districts.
For example for 42 ranking results among Fig. 4, UE then at first selects the highest sub-district 2 of ordering to be stationed, and after failure is stationed in sub-district 2, then is stationed according to the order of sub-district 3, sub-district 4, sub-district 1 successively.
Step 405: in the sub-district of being stationed, initiate cell updating course.
UE initiates cell updating course, rebulids with network to be connected.
Embodiment four is according to the prioritization of R criterion and multi-carrier district, and the preferential multi-carrier district of selecting is stationed when making the sub-district gravity treatment, helps improving the cell signal quality.
Embodiment five,
The main Serving cell generation Radio Link Failure of step 501:UE, from the CELL_DCH state exchange to the CELL_FACH state.
After Radio Link Failure had taken place, UE and network side dedicated channel were eliminated, and only keep common signal channel, therefore by the CELL_DCH state exchange to the CELL_FACH state.
Step 502: obtain the cell quality value that comprises main Serving cell and auxilliary Serving cell.
Step 503: the priority according to cell signal measured value and paired plot sorts to all cell quality values.
In the present embodiment, UE does not pay the utmost attention to main Serving cell and auxilliary Serving cell, but directly all cell quality values that comprise main Serving cell and auxilliary Serving cell is sorted;
Ordering is carried out according to the cell signal measured value earlier, then on the basis of this cell signal measured value ordering again according to the prioritization of paired plot, the cell signal measured value can obtain according to the R criterion.
Double small district in the HSDPA technology is meant two fixing sub-districts, just main Serving cell and auxilliary Serving cell, and one of them sub-district just is called the paired plot of another sub-district.Because the signal quality of paired plot can have influence on UE sets up HSDPA in the double small district after the gravity treatment of sub-district quality of service, so, will be more secure to the HSDPA quality of service of being stationed the UE behind the sub-district of reselecting according to the prioritization of paired plot.
Referring to Fig. 5, there is co-frequency cell 1,2,3,4,5,6, sub-district 1 is UE master's Serving cell, and sub-district 2,3,4 is a homogeneous-frequency adjacent-domain, and sub-district 5 and 6 is respectively the paired plot of sub-district 3 and 4; The result that UE sorts to sub-district 1,2,3,4 according to the R criterion is followed successively by 4 (6), 3 from high to low shown among the figure 51
(5), 1,2; On this basis, the priority according to the paired plot sorts again, and because of the ordering of paired plot 5 is higher than sub-district 6, then the result of new sort is followed successively by 3 (5), 4 (6), 1,2 from high to low shown among the figure 52.
Also can carry out the cell quality value ordering that comprises the alien-frequency district of assisting Serving cell according to above co-frequency cell; Also the ordering of co-frequency cell is carried out in the ordering that can carry out alien-frequency district earlier again, does not influence the realization of the embodiment of the invention.
Step 504: select the highest sub-district of ordering to be stationed.
UE selects the highest and sub-district that reach Tselection signal duration of ordering to be stationed according to the ranking results of step 503, if be stationed failure to the highest sub-district of ordering, then select the sub-district to be stationed successively, until successfully being stationed some sub-districts according to ordering.
For example for 52 ranking results among Fig. 5, UE then at first selects the highest sub-district 3 of ordering to be stationed, and after failure is stationed in sub-district 3, then is stationed according to the order of sub-district 4, sub-district 1, sub-district 2 successively.
Step 505: in the sub-district of being stationed, initiate cell updating course.
UE initiates cell updating course, rebulids with network to be connected.
Embodiment five is according to the prioritization of cell signal measured value and paired plot, and the preferential paired plot of selecting is stationed when making the sub-district gravity treatment, helps improving the quality of service of HSDPA behind the re-selecting cell.
Above embodiment four is according to the prioritization of cell signal measured value and multi-carrier district, embodiment five is according to the prioritization of cell signal measured value and paired plot, six of following embodiment take all factors into consideration embodiment four and embodiment five combinations according to cell signal measured value, multi-carrier district priority and paired plot priority three and sort.
Embodiment six,
The main Serving cell generation Radio Link Failure of step 601:UE, from the CELL_DCH state exchange to the CELL_FACH state.
After Radio Link Failure had taken place, UE and network side dedicated channel were eliminated, and only keep common signal channel, therefore by the CELL_DCH state exchange to the CELL_FACH state.
Step 602: obtain the cell quality value that comprises main Serving cell and auxilliary Serving cell.
Step 603: the priority of taking all factors into consideration cell signal measured value, multi-carrier district priority and paired plot sorts to all cell quality values.
In the present embodiment, UE does not pay the utmost attention to main Serving cell and auxilliary Serving cell, but directly all cell quality values that comprise main Serving cell and auxilliary Serving cell is sorted;
The priority that cell signal measured value, multi-carrier district priority and paired plot are taken all factors into consideration in ordering is carried out, and has both considered the advantage of multi-carrier district, has considered the quality of service of the HSDPA behind the re-selecting cell again, is preferred embodiment more; The cell signal measured value can obtain according to the R criterion.
Referring to Fig. 6, there is co-frequency cell 1,2,3,4,5,6,7,8, sub-district 1 is UE master's Serving cell, and sub-district 2,3,4,7,8 is a homogeneous-frequency adjacent-domain, and sub-district 5 and 6 is respectively the paired plot of sub-district 3 and 4, and sub-district 7 and 8 is a multi-carrier district; The result that UE sorts to sub-district 1,2,3,4,7,8 according to the R criterion is followed successively by 4 (6), 7,3 (5), 8,1,2 from high to low shown among the figure 61, numeral is the paired plot of the outer sub-district of bracket correspondence in the bracket; On this basis, sort according to the priority of multi-carrier district, the priority of multi-carrier district 8 is higher than multi-carrier district 7, so the new sort result shown among the figure 62, is followed successively by 8,7,4 (6), 3 (5), 1,2 from high to low; Priority according to the paired plot sorts then, and because of the ordering of paired plot 5 is higher than sub-district 6, then the result of final ordering is followed successively by 8,7,3 (5), 4 (6), 1,2 from high to low shown among the figure 63.
Also can carry out the ordering of paired plot earlier and carry out the multi-carrier district ordering again, not influence the realization of the embodiment of the invention.
Also can carry out the ordering that comprises the alien-frequency district of assisting Serving cell according to above co-frequency cell; Also the ordering of co-frequency cell is carried out in the ordering that can carry out alien-frequency district earlier again, does not also influence the realization of the embodiment of the invention.
Step 604: select the highest sub-district of ordering to be stationed.
UE selects the highest and sub-district that reach Tselection signal duration of ordering to be stationed according to the ranking results of step 603, if be stationed failure to the highest sub-district of ordering, then attempts until success successively according to ordering.
For example for 63 ranking results among Fig. 6, UE then at first selects the highest sub-district 8 of ordering to be stationed, and after failure is stationed in sub-district 8, then is stationed according to the order of sub-district 7, sub-district 3, sub-district 4, sub-district 1, sub-district 2 successively.
Step 605: in the sub-district of being stationed, initiate cell updating course.
UE initiates cell updating course, rebulids with network to be connected.
Embodiment six comprehensive cell signal measured values, multi-carrier district priority and paired plot priority sort to the sub-district, preferential multi-carrier district or the high sub-district of paired plot priority selected is stationed when making the sub-district gravity treatment, helps guaranteeing HSDPA quality of service behind cell signal quality and the re-selecting cell.
The following examples seven are revised the R criterion improves multi-carrier district about the formula of the signal measurements of adjacent area cell signal measured value.
Embodiment seven,
The main Serving cell generation Radio Link Failure of step 701:UE, from the CELL_DCH state exchange to the CELL_FACH state.
After Radio Link Failure had taken place, UE and network side dedicated channel were eliminated, and only keep common signal channel, therefore by the CELL_DCH state exchange to the CELL_FACH state.
Step 702: obtain the cell signal measured value that comprises main Serving cell and auxilliary Serving cell.
Step 703: all cell signal measured values are sorted according to amended R criterion.
R criterion of the prior art is made amendment, be the default coefficient of adjacent area bias distribution wherein, the formula behind the distribution coefficient is:
Rn=Qmap, n-coefficient * Qoffset
S, n
Rn is the signal measurements of adjacent area, and Qmeas, n is the measured value of adjacent area, Qoffset
S, nBe the adjacent area bias that carries out the sub-district gravity treatment between current service cell and the adjacent area, the adjacent area bias can be provided with and issue in system broadcast message voluntarily; Coefficient is according to the UE ability and value; Particularly, for the UE with single carrier ability, this coefficient gets 1; For the UE with multi-carrier capability, this coefficient value scope is between 0 to 1; The signal measurements of adjacent area is that the signal measurements of adjacent area deducts the adjacent area bias and coefficient is long-pending, numerical value reduces after having the adjacent area bias of UE of multi-carrier capability and multiplication, then makes the preferential selection multi-carrier district of UE with multi-carrier capability be stationed.
Step 704: select the highest sub-district of ordering to be stationed.
UE selects the highest and sub-district that reach Tselection signal duration of ordering to be stationed according to the ranking results of step 703, if be stationed failure to the highest sub-district of ordering, then selects the sub-district to be stationed successively according to ordering, until in the success of some sub-districts.
Step 705: in the sub-district of being stationed, initiate cell updating course.
UE initiates cell updating course, rebulids with network to be connected.
The ordering that the formula that embodiment seven calculates about the signal measurements of adjacent area by modification R criterion improves multi-carrier district, the preferential multi-carrier district of selecting is stationed when making the sub-district gravity treatment, helps promoting the cell signal quality.
More than all embodiment of the invention when the gravity treatment of sub-district, do not relate to the transfer of data of UE, therefore, the UE that is equally applicable to idle condition, CELL_FACH state, CELL_PCH state, URA_PCH state carries out the sub-district gravity treatment.
A kind of terminal also is provided below the embodiment of the invention, and referring to Fig. 7, Fig. 7 is the structural representation of embodiment of the invention terminal, comprising:
Acquiring unit 801 is used to obtain the cell quality value, and described sub-district comprises main Serving cell and auxilliary Serving cell at least;
Be stationed unit 803, be used for being stationed to the sub-district that described selected cell 802 is selected.
Wherein, acquiring unit 801 comprises subelement:
First acquiring unit 8011 is used to obtain the cell quality value of main Serving cell and auxilliary Serving cell;
Acquiring unit 801 or further comprise subelement:
Described terminal also comprises:
Described sequencing unit 804 comprises subelement:
Receiving element 8041 is used to receive the cell quality value that acquiring unit obtains;
Perhaps, be used for sorting according to multi-carrier district priority and/or paired plot priority and according to the cell signal measured value that the R criterion draws, perhaps, the cell signal measured value that is used for drawing according to amended R criterion sorts to the cell quality value that receiving element receives, and the adjacent area bias in the described amended R criterion contains default coefficient.
Acquiring unit 801 gets access to the cell quality value, and selected cell 802 is selected the best sub-district of cell quality value according to the cell quality value, is stationed 803 sub-districts of selecting to selected cell 802, unit and is stationed.
Wherein, first acquiring unit 8011 obtains the cell quality value of main Serving cell and auxilliary Serving cell, and selected cell 802 is selected the sub-district according to the cell quality value then, is stationed 803 sub-districts of selecting to selected cell 802, unit and is stationed; Be stationed after main Serving cell and auxilliary Serving cell all fail, second acquisition unit 8012 obtains the cell quality value of sub-district except that main Serving cell and auxilliary Serving cell, selected cell 802 is selected the sub-district according to the cell quality value then, is stationed 803 sub-districts of selecting to selected cell 802, unit and is stationed.
Described terminal also can comprise:
After the cell quality value that the receiving element 8041 reception acquiring units of sequencing unit 804 obtain, the cell quality value that 8042 pairs of receiving elements of first sequencing unit 8041 receive sorts, cell quality value after the ordering is sent to selected cell 802, and 802 of the selected cells cell quality value after according to the ordering that receives is selected the highest sub-district of ordering.
Wherein, when the cell quality value that 8042 pairs of receiving elements of first sequencing unit 8041 receive sorts, the cell quality value that receiving element receives is sorted according to the order that sets in advance or according to the cell signal measured value that the R criterion draws; Perhaps, sort according to multi-carrier district priority and/or paired plot priority and according to the cell signal measured value that the R criterion draws, perhaps, the cell signal measured value that draws according to amended R criterion sorts to the cell quality value that receiving element receives, and the adjacent area bias in the described amended R criterion contains default coefficient.
The embodiment of the invention also provides a kind of wireless communication system, comprising:
Terminal is used for selecting the sub-district according to the cell quality value of obtaining, and is stationed to the sub-district of selecting, and described sub-district comprises main Serving cell and auxilliary Serving cell at least.
To sum up, the embodiment of the invention provides a kind of realization method of cell reselection, terminal and system, makes terminal when the double small district of employing HSDPA technology, can realize the sub-district gravity treatment.Wherein, can pay the utmost attention in main Serving cell and auxilliary Serving cell and select, improve the efficient of sub-district gravity treatment; The back of also can being sorted together in the sub-district that comprises main Serving cell and auxilliary Serving cell selects the highest sub-district of ordering to be stationed: can sort according to the priority of cell signal measured value and multi-carrier district during ordering or by revising the R criterion formulas, improve the signal measurements of multi-carrier district; Also can be according to the prioritization of cell signal measured value and paired plot, HSDPA quality of service after the raising sub-district gravity treatment.
More than a kind of realization method of cell reselection, terminal and system that the embodiment of the invention provided are described in detail, used specific case herein principle of the present invention and execution mode are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, the part that all can change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.
Claims (12)
1, a kind of realization method of cell reselection is characterized in that:
Obtain the cell quality value, described sub-district comprises main Serving cell and auxilliary Serving cell at least;
Select the sub-district according to described cell quality value;
Be stationed to the described sub-district of selecting.
2, realization method of cell reselection according to claim 1 is characterized in that:
Describedly select the sub-district to be specially: after described cell quality value is sorted, to select the highest sub-district of ordering according to described cell quality value.
3, realization method of cell reselection according to claim 2 is characterized in that: the described cell quality value of obtaining is specially: the cell quality value of only obtaining main Serving cell and auxilliary Serving cell;
Described described cell quality value is sorted is specially: after receiving described cell quality value, according to the order that sets in advance described cell quality value is sorted;
Perhaps, described described cell quality value is sorted is specially: described cell quality value comprises the cell signal measured value, according to the cell signal measured value described cell quality value is sorted.
4, realization method of cell reselection according to claim 3 is characterized in that, if described result's failure of being stationed to the described sub-district of selecting then further comprises:
The sub-district is reselected according to the cell quality value in other sub-districts beyond main Serving cell and auxilliary Serving cell;
Be stationed to the described sub-district of reselecting out.
5, realization method of cell reselection according to claim 4 is characterized in that: described sub-district beyond main Serving cell and auxilliary Serving cell selects the sub-district to be specially according to the cell quality value:
After cell quality value beyond main Serving cell and the auxilliary Serving cell sorted, select the highest sub-district of ordering.
6, according to claim 2 or 5 described realization method of cell reselection, it is characterized in that:
The described cell quality value of obtaining comprises the cell signal measured value, and multi-carrier district priority and/or paired plot priority;
Described described cell quality value is sorted is specially: after receiving described cell quality value, according to multi-carrier district priority and/or paired plot priority and cell signal measured value described cell quality value is sorted;
Perhaps, the described cell quality value of obtaining comprises the cell signal measured value that draws according to the R criterion;
Described described cell quality value is sorted is specially: the cell signal measured value that draws according to amended R criterion sorts described cell quality value, and the adjacent area bias in the described amended R criterion contains default coefficient.
7, realization method of cell reselection according to claim 6 is characterized in that:
Described default coefficient is according to terminal carrier capability value.
8, a kind of terminal is characterized in that, comprising:
Acquiring unit is used to obtain the cell quality value, and described sub-district comprises main Serving cell and auxilliary Serving cell at least;
Selected cell is used for selecting the sub-district according to the cell quality value;
Be stationed the unit, be used for being stationed to the sub-district that described selected cell is selected.
9, terminal according to claim 8 is characterized in that, described acquiring unit comprises:
First acquiring unit is used to obtain the cell quality value of main Serving cell and auxilliary Serving cell;
Described acquiring unit or further comprise:
Second acquisition unit is used to obtain the cell quality value of other sub-districts except that main Serving cell and auxilliary Serving cell.
10, according to Claim 8 or 9 described terminals, it is characterized in that described terminal also comprises:
Sequencing unit, the cell quality value that is used for described acquiring unit is obtained sorts, and the cell quality value after will sorting is sent to selected cell.
11, terminal according to claim 10 is characterized in that, described sequencing unit comprises:
Receiving element is used to receive the cell quality value that acquiring unit obtains;
First sequencing unit is used for according to the order that sets in advance or according to the cell signal measured value cell quality value that receiving element receives being sorted; Perhaps, be used for the cell quality value that receiving element receives being sorted according to multi-carrier district priority and/or paired plot priority and according to the cell signal measured value, perhaps, be used for sorting according to the cell signal measured value that amended R criterion draws, the adjacent area bias in the described amended R criterion contains default coefficient.
12, a kind of wireless communication system is characterized in that, comprising:
Terminal is used for selecting the sub-district according to the cell quality value of obtaining, and is stationed to the sub-district of selecting, and described sub-district comprises main Serving cell and auxilliary Serving cell at least.
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| CN200810039708A CN101616459A (en) | 2008-06-24 | 2008-06-24 | A kind of realization method of cell reselection, terminal and system |
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| CN200810039708A CN101616459A (en) | 2008-06-24 | 2008-06-24 | A kind of realization method of cell reselection, terminal and system |
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