CN104053202A - Cell primary scrambling code conflict identification, soft handover and adjacent cell list generating method and device - Google Patents
Cell primary scrambling code conflict identification, soft handover and adjacent cell list generating method and device Download PDFInfo
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- CN104053202A CN104053202A CN201310078515.9A CN201310078515A CN104053202A CN 104053202 A CN104053202 A CN 104053202A CN 201310078515 A CN201310078515 A CN 201310078515A CN 104053202 A CN104053202 A CN 104053202A
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Abstract
The invention discloses a cell primary scrambling code conflict identification, soft handover and adjacent cell list generation method and device which are applied to a system comprising two and the above cells having the same primary scrambling codes and with no-repeat coverage. The conflict identification method comprises the following steps: through a node synchronization process, an RNC obtains system frame number (SFN)-SFN observation time difference between any two cells; the RNC selects one cell as a target cell from a measurement report reported by UE, and obtains SFN deviation between the target cell and a current service cell of the UE according to frame deviation and code deviation between downlink dedicated physical control channels established by the target cell SFN and the UE, measured by the UE, and carried in the measurement report; and the RNC matches the SFN deviation between the target cell and the service cell with SFN-SFN observation time difference between the target cell and the service cell obtained through the node synchronization process, and determines identification information of the target cell.
Description
Technical field
The present invention relates to UMTS (Universal Mobile Telecommunications System, universal mobile telecommunications system) self-organizing network, relate in particular to a kind of subzone main scramble conflict identification, soft handover and list generation method and device.
Background technology
Carry out when soft handover at UE (User Equipment, subscriber equipment), distinguish homogeneous-frequency adjacent-domain by subzone main scramble, this will ask the subzone main scramble of homogeneous-frequency adjacent-domain can not be identical.But in UMTS network, except will ensureing that the main scrambler of adjacent two communities does not repeat, also to ensure that the main scrambler in adjacent area of heavy adjacent area, double adjacent area and triple adjacent areas can not repeat.If aforementioned condition can not meet, in the time that UE carries out soft handover, RNC (Radio Network Controller, radio network controller) cannot distinguish by main scrambler the adjacent area of a heavy adjacent area, double adjacent area, triple adjacent areas, just may there is the situation that causes UE by mistake to cut due to RNC mistake in judgment in this.
As shown in Figure 1, community A and community B are homogeneous-frequency adjacent-domain, and RNC is respectively community A and community B distributes different scrambler 100 and 101, otherwise user is in the time of switch area, and RNC cannot distinguishing cell A and community B.
As shown in Figure 2, in current UMTS network, community A (main scrambler 100) can not repeat with the main scrambler of community B (main scrambler 101), community A and community C (main scrambler 102), and the main scrambler of community B and community C can not repeat, the main scrambler in adjacent area of a heavy adjacent area can not repeat.If community B is identical with the main scrambler of community C, UE is in the time carrying out soft handover, and RNC cannot come distinguishing cell B and community C by main scrambler, and UE may cause cutting due to RNC mistake in judgment by mistake.
As shown in Figure 3, in current UMTS network, the community C of double adjacent area (main scrambler 102) can not be identical with the main scrambler of community D (main scrambler 103).If community C is identical with the main scrambler of community D, UE is in the time carrying out soft handover, and RNC cannot come distinguishing cell C and community D by main scrambler, and UE may cause cutting due to RNC mistake in judgment by mistake.
As shown in Figure 4, in current UMTS network, the community D of triple adjacent areas (main scrambler 103) can not be identical with the main scrambler of community E (main scrambler 104).If community D is identical with the main scrambler of community E, UE is in the time carrying out soft handover, and RNC cannot come distinguishing cell D and community E by main scrambler, and UE may cause cutting due to RNC mistake in judgment by mistake.
For the main scrambler problem in adjacent area of a heavy adjacent area, double adjacent area, due to close together between adjacent area, can ensure that subzone main scramble does not repeat by the network planning and the network optimization.And the multiplexing problem of the main scrambler in the adjacent area of triple adjacent areas is difficult to thoroughly solve, existing distribution method is difficult to ensure that the main scrambler in adjacent area of triple adjacent areas does not repeat.And the existence of triple adjacent areas can cause subzone main scramble reusability to be difficult to improve.In the extensive application that covers close quarters, particularly micro-base station, will there will be more triple adjacent area, this problem will be more outstanding.
In UMTS network, UE is carrying out in the process of soft handover, radio network controller (Radio Network Controller, referred to as RNC) can only indicate UE to be switched to Active Set (Active Set) Zhong community, and cannot be switched to detected set (Detected Set) Zhong community.If the adjacent area of network side leakage Pei Liaomou community, RNC cannot carry out switching flow, probably causes call drop.
In the process of existing UMTS networking, must plan in advance the main scrambler of each community, after treating the network operation, then adjacent area is leaked join, the abnormal problem such as multiplexing of scrambler is optimized, and cannot automatically generate Neighboring Cell List, efficiency is low and expend height.
In sum, the main scrambler of triple adjacent areas easily causes scrambler is multiplexing, 512 main scrambler reusabilities cannot improve, cannot support to be switched to detection set community, cannot automatically identify these problems of adjacent area to be a unsolved difficult problem still in the UMTS network planning always.
Summary of the invention
The invention provides method and device that a kind of subzone main scramble conflict identification, soft handover and Neighboring Cell List generate, to solve the multiplexing problem of the main scrambler in triple adjacent areas.
For addressing the above problem, the invention provides a kind of subzone main scramble conflict and know method for distinguishing, be applied to and contain in the system of more than 2 community covering, comprising without repeating of identical main scrambler:
By synchronisation of nodes process, radio network controller (RNC) obtains System Frame Number (the SFN)-SFN observed time difference between any Liang Ge community;
The measurement report that described RNC reports from subscriber equipment (UE), select Yi Ge community as Target cell; And the inclined to one side OFF of frame between the downlink dedicated physical control channel (DPCCH) set up of the described Target cell SFN measuring according to the described UE carrying in described measurement report and described UE
targetwith the inclined to one side Tm of code
target, obtain the SFN deviation between the current Serving cell of described UE and described Target cell;
Described RNC is by the SFN deviation between described Serving cell and described Target cell, with by described synchronisation of nodes Procedure Acquisition to described Serving cell mate with the SFN-SFN observed time difference between described Target cell, confirm the identification information of described Target cell.
Further,
Described by synchronisation of nodes process, RNC obtains the SFN-SFN observed time difference between any Liang Ge community, specifically comprises:
For each Node B (NodeB) of subordinate, described RNC sends the descendant node synchronization frame that contains T1 to NodeB; Wherein, T1 is the RNC frame number that described RNC sends the described descendant node synchronization frame moment;
Described NodeB receives that rear response upstream node synchronization frame, to described RNC, wherein carries T2 and T3; Wherein, T2 is the NodeB frame number that described NodeB receives the described descendant node synchronization frame moment, and T3 is the NodeB frame number that sends the described upstream node synchronization frame moment;
Described RNC calculates the deviation between the RNC frame number of described RNC and the NodeB frame number of described NodeB by T2-T1+T4-T3; Wherein, T4 is the RNC frame number that described RNC receives the upstream node synchronization frame moment that described NodeB reports;
For any Liang Ge community, described RNC, according to the deviation between the NodeB frame number of the service NodeB of the RNC frame number of self and these two minizones, obtains the SFN-SFN observed time difference of Zhe Liangge community.
Further,
Described RNC is according to the OFF carrying in described measurement report
targetand Tm
target, obtain the SFN deviation between the current Serving cell of described UE and described Target cell, specifically comprise:
UE is known the SFN of current Serving cell of living in by cell search process;
Connect in process of establishing in Radio Resource control (RRC), described RNC issues described UE by RRC message by the DPCH deviant (DOFF) of the acquiescence of selecting;
Described UE calculates the OFF of Serving cell by following formula
sourceand Tm
source:
CFN＝((SFN×38400-DOFF×512)÷38400)Mod256
OFF+Tm＝(SFN-CFN)Mod256
Described UE records the OFF of described Target cell by following formula
targetand Tm
targetand report described RNC;
OFF+Tm＝(SFN-DLDPCH
nom)Mod256
Wherein, DLDPCH
nomfor descending DPCH time of reception;
Described RNC obtains the OFF of described Target cell
targetand Tm
targeteafter, with the OFF of described Serving cell
sourceand Tm
sourcecompare, obtain the deviation of the SFN of described Serving cell and described Target cell.
Correspondingly, the present invention also provides the method for the soft handover of a kind of detected set community, is applied to and contains in the system of more than 2 community covering, comprising without repeating of identical main scrambler:
By synchronisation of nodes process, radio network controller (RNC) obtains System Frame Number (the SFN)-SFN observed time difference between any Liang Ge community;
The measurement report that described RNC reports from subscriber equipment (UE), select Yi Ge community as Target cell; And the inclined to one side OFF of frame between the downlink dedicated physical control channel (DPCCH) set up of the described Target cell SFN measuring according to the described UE carrying in described measurement report and described UE
targetwith the inclined to one side Tm of code
target, obtain the SFN deviation between the current Serving cell of described UE and described Target cell;
Described RNC is by the SFN deviation between described Serving cell and described Target cell, with by described synchronisation of nodes Procedure Acquisition to described Serving cell mate with the SFN-SFN observed time difference between described Target cell, confirm the identification information of described Target cell;
Described RNC determines that described Target cell can switch, and is the wireless link distribution resource newly increasing by sending the serving BS of Target cell described in wireless link request request, and described Target cell is increased in UE Active Set.
Further, described method also comprises:
As described in judging Target cell do not belong to as described in the Neighboring Cell List Zhong community of UE, after the identification information of described Target cell, described Target cell is joined in the Neighboring Cell List of described UE confirming.
Further,
Described by synchronisation of nodes process, RNC obtains the SFN-SFN observed time difference between any Liang Ge community, specifically comprises:
For each Node B (NodeB) of subordinate, described RNC sends the descendant node synchronization frame that contains T1 to NodeB; Wherein, T1 is the RNC frame number that described RNC sends the described descendant node synchronization frame moment;
Described NodeB receives that rear response upstream node synchronization frame, to described RNC, wherein carries T2 and T3; Wherein, T2 is the NodeB frame number that described NodeB receives the described descendant node synchronization frame moment, and T3 is the NodeB frame number that sends the described upstream node synchronization frame moment;
Described RNC calculates the deviation between the RNC frame number of described RNC and the NodeB frame number of this NodeB by T2-T1+T4-T3; Wherein, T4 is the RNC frame number that described RNC receives the upstream node synchronization frame moment that described NodeB reports;
For any Liang Ge community, described RNC, according to the deviation between the NodeB frame number of the service NodeB of the RNC frame number of self and these two minizones, obtains the SFN-SFN observed time difference of Zhe Liangge community.
Further,
Described RNC is according to the OFF carrying in described measurement report
targetand Tm
target, obtain the SFN deviation between the current Serving cell of described UE and described Target cell, specifically comprise:
Described UE by cell search process know current Serving cell of living in SFN;
Connect in process of establishing in Radio Resource control (RRC), described RNC issues described UE by RRC message by the DPCH deviant (DOFF) of the acquiescence of selecting;
Described UE calculates the OFF of Serving cell by following formula
sourceand Tm
source:
CFN＝((SFN×38400-DOFF×512)÷38400)Mod256
OFF+Tm＝(SFN-CFN)Mod256
Described UE records the OFF of described Target cell by following formula
targetand Tm
targetand report described RNC:
OFF+Tm＝(SFN-DLDPCH
nom)Mod256
Wherein, DLDPCH
nomfor descending DPCH time of reception;
Described RNC obtains the OFF of described Target cell
targetand Tm
targeteafter, with the OFF of described Serving cell
sourceand Tm
sourcecompare, obtain the deviation of the SFN of described Serving cell and described Target cell.
Correspondingly, a kind of method that the present invention also provides main scrambler to distribute, comprising:
For the Node B (NodeB) of main scrambler to be allocated, radio network controller (RNC) completes after synchronisation of nodes with described NodeB, is the main scrambler of described NodeB service range Nei community Random assignment;
For described NodeB service range Nei community, by synchronisation of nodes process, described RNC obtains System Frame Number (the SFN)-SFN observed time difference between this community and other communities, and calculates accordingly the positional information of described NodeB;
Described RNC receives the measurement report that subscriber equipment (UE) reports; As the information of NodeB service range Nei community as described in containing in measurement report as described in judging, the inclined to one side OFFtarget of frame and the inclined to one side Tmtarget of code between the SFN that measures Gai community according to the described UE carrying in described measurement report and the downlink dedicated physical control channel (DPCCH) that described UE has set up, obtain the SFN deviation between the current Yu Gai community, Serving cell of UE, and calculate accordingly the positional information of described NodeB;
Described RNC is the positional information of the described NodeB calculating according to described measurement report, with by described synchronisation of nodes Procedure Acquisition to the positional information of described NodeB mate, as consistent in the two, confirm as the main scrambler that described NodeB distributes correct.
Further,
Described by synchronisation of nodes process, described RNC obtains the SFN-SFN observed time difference between this community and other communities, specifically comprises:
For the NodeB of described main scrambler to be allocated and other any one NodeB of subordinate, described RNC sends respectively the descendant node synchronization frame that contains T1 to NodeB; Wherein, T1 is the RNC frame number that described RNC sends the described descendant node synchronization frame moment;
NodeB receives that rear response upstream node synchronization frame, to described RNC, wherein carries T2 and T3; Wherein, T2 is the NodeB frame number that described NodeB receives the described descendant node synchronization frame moment, and T3 is the NodeB frame number that sends the described upstream node synchronization frame moment;
Described RNC calculates the deviation between the RNC frame number of described RNC and the NodeB frame number of this NodeB by T2-T1+T4-T3; Wherein, T4 is the RNC frame number that described RNC receives the upstream node synchronization frame moment that described NodeB reports;
Any for other of the NodeB of described main scrambler to be allocated and subordinate, described RNC, according to the deviation between the NodeB frame number of the service NodeB of the RNC frame number of self and these two minizones, obtains the SFN-SFN observed time difference of Zhe Liangge community.
Further,
Described RNC is according to the SFN and the OFF that carry described UE measurement Gai community in described measurement report
targetand Tm
target, obtain the SFN deviation between the current Yu Gai community, Serving cell of described UE, specifically comprise:
Described UE is known the SFN of current Serving cell of living in by cell search process;
Connect in process of establishing in Radio Resource control (RRC), described RNC issues described UE by RRC message by the DPCH deviant (DOFF) of the acquiescence of selecting;
Described UE calculates the OFF of Serving cell by following formula
sourceand Tm
source:
CFN＝((SFN×38400-DOFF×512)÷38400)Mod256
OFF+Tm＝(SFN-CFN)Mod256
Described UE records the OFF of the NodeB service range Nei community of described main scrambler to be allocated by following formula
targetand Tm
targetand report described RNC:
OFF+Tm＝(SFN-DLDPCH
nom)Mod256
Wherein, DLDPCH
nomfor descending DPCH time of reception;
Described RNC obtain in the NodeB service range of described main scrambler to be allocated OFF
targetand Tm
targeteafter, with the OFF of described Serving cell
sourceand Tm
sourcecompare, obtain the deviation of the SFN of the NodeB service range Nei community of described Serving cell and described main scrambler to be allocated.
Correspondingly, the invention provides a kind of radio network controller, be applied to and contain in the system of more than 2 community covering, comprising without repeating of identical main scrambler:
Observed time difference acquisition module, for by synchronisation of nodes process, obtains System Frame Number (the SFN)-SFN observed time difference between any Liang Ge community;
SFN deviation acquisition module, for the measurement report reporting from subscriber equipment (UE), selects Yi Ge community as Target cell; And the inclined to one side OFF of frame between the downlink dedicated physical control channel (DPCCH) set up of the described Target cell SFN measuring according to the described UE carrying in described measurement report and described UE
targetwith the inclined to one side Tm of code
target, obtain the SFN deviation between the current Serving cell of described UE and described Target cell;
Matching module, for the SFN deviation between described Serving cell and described Target cell that described SFN deviation acquisition module is got, with described observed time difference acquisition module by described synchronisation of nodes Procedure Acquisition to described Serving cell mate with the SFN-SFN observed time difference between described Target cell, confirm the identification information of described Target cell.
Further,
Described observed time difference acquisition module, for by synchronisation of nodes process, obtains the SFN-SFN observed time difference between any Liang Ge community, specifically comprises:
Described observed time difference acquisition module, for each Node B (NodeB) for subordinate, sends the descendant node synchronization frame that contains T1 to NodeB; Wherein, T1 is the RNC frame number that described observed time difference acquisition module sends the described descendant node synchronization frame moment; Also, for receiving after the response that described NodeB returns, calculate the deviation between the RNC frame number of described RNC and the NodeB frame number of described NodeB by T2-T1+T4-T3; Wherein, in described response, carry T2 and T3; T2 is the NodeB frame number that described NodeB receives the described descendant node synchronization frame moment, and T3 is the NodeB frame number that sends the described upstream node synchronization frame moment; T4 is the RNC frame number that described observed time difference acquisition module is received the upstream node synchronization frame moment that described NodeB reports; Also, for for any Liang Ge community, according to the deviation between the NodeB frame number of the service NodeB of the RNC frame number of self and these two minizones, obtain the SFN-SFN observed time difference of Zhe Liangge community.
Further,
Described SFN deviation acquisition module, for the OFF carrying according to described measurement report
targetand Tm
target, obtain the SFN deviation between the current Serving cell of described UE and described Target cell, specifically comprise:
Described SFN deviation acquisition module, for connecting process of establishing in Radio Resource control (RRC), issues UE by RRC message by the DPCH deviant (DOFF) of the acquiescence of selecting; Wherein, described UE is known the SFN of current Serving cell of living in by cell search process; And described UE calculates the OFF of Serving cell by following formula
sourceand Tm
source:
CFN＝((SFN×38400-DOFF×512)÷38400)Mod256
OFF+Tm＝(SFN-CFN)Mod256
Described UE records the OFF of described Target cell by following formula
targetand Tm
targetand report described RNC;
OFF+Tm＝(SFN-DLDPCH
nom)Mod256
Wherein, DLDPCH
nomfor descending DPCH time of reception;
The described SFN of stating deviation acquisition module is for obtaining the OFF of described Target cell
targetand Tm
targeteafter, with the OFF of described Serving cell
sourceand Tm
sourcecompare, obtain the deviation of the SFN of described Serving cell and described Target cell.
Further, described radio network controller also comprises:
Handover module, for switching in definite described Target cell, is the wireless link distribution resource newly increasing by the serving BS of Target cell described in transmission wireless link request request, and described Target cell is increased in UE Active Set.
Further,
Described handover module is also for the Neighboring Cell List Zhong community judging described Target cell and do not belong to described UE, after the identification information of described Target cell, described Target cell joined in the Neighboring Cell List of described UE confirming.
In addition, the present invention also provides a kind of radio network controller, comprising:
Main scrambler distribution module, for the Node B for main scrambler to be allocated (NodeB), completes after synchronisation of nodes with described NodeB, is the main scrambler of described NodeB service range Nei community Random assignment;
Primary importance information computing module, be used for for described NodeB service range Nei community, by synchronisation of nodes process, obtain System Frame Number (the SFN)-SFN observed time difference between this community and other communities, and calculate accordingly the positional information of described NodeB;
Second place information computing module, the measurement report reporting for receiving subscriber equipment (UE); As the information of NodeB service range Nei community as described in containing in measurement report as described in judging, measure the inclined to one side OFF of frame between the SFN of Gai community and downlink dedicated physical control channel (DPCCH) that described UE has set up according to the described UE carrying in described measurement report
targetwith the inclined to one side Tm of code
target, obtain the SFN deviation between the current Yu Gai community, Serving cell of UE, and calculate accordingly the positional information of described NodeB;
Matching module, be used for the positional information of the described NodeB that described primary importance information computing module is calculated, the positional information of the described NodeB calculating with described second place information computing module is mated, as consistent in the two, and the main scrambler of confirming as described NodeB distribution is correct.
Further,
Described primary importance information computing module, for by synchronisation of nodes process, obtains the SFN-SFN observed time difference between this community and other communities, specifically comprises:
Described primary importance information computing module, for for the NodeB of described main scrambler to be allocated and other any one NodeB of subordinate, sends respectively the descendant node synchronization frame that contains T1 to NodeB; Wherein, T1 is the RNC frame number that described primary importance information computing module sends the described descendant node synchronization frame moment;
Also, for receiving after the response of described NodeB reply, calculate the deviation between the RNC frame number of described RNC and the NodeB frame number of this NodeB by T2-T1+T4-T3; Wherein, in described response, carry T2 and T3; T2 is the NodeB frame number that described NodeB receives the described descendant node synchronization frame moment, and T3 is the NodeB frame number that sends the described upstream node synchronization frame moment; T4 is the RNC frame number that described primary importance information computing module is received the upstream node synchronization frame moment that described NodeB reports;
Also, for other any one NodeB of the NodeB for described main scrambler to be allocated and subordinate, according to the deviation between the NodeB frame number of the service NodeB of the RNC frame number of self and these two minizones, obtain the SFN-SFN observed time difference of Zhe Liangge community.
Further,
The OFF of described second place information computing module for carrying according to described measurement report
targetand Tm
target, obtain the SFN deviation between the current Serving cell of described UE and described Target cell, specifically comprise:
Described second place information computing module, for connecting process of establishing in Radio Resource control (RRC), is issued UE by RRC message by the DPCH deviant (DOFF) of the acquiescence of selecting; Wherein, described UE is known the SFN of current Serving cell of living in by cell search process; And described UE calculates the OFF of Serving cell by following formula
sourceand Tm
source:
CFN＝((SFN×38400-DOFF×512)÷38400)Mod256
OFF+Tm＝(SFN-CFN)Mod256
Described UE records the OFF of described Target cell by following formula
targetand Tm
targetand report described RNC;
OFF+Tm＝(SFN-DLDPCH
nom)Mod256
Wherein, DLDPCH
nomfor descending DPCH time of reception;
The described SFN of stating deviation acquisition module is for obtaining the OFF of described Target cell
targetand Tm
targeteafter, with the OFF of described Serving cell
sourceand Tm
sourcecompare, obtain the deviation of the SFN of described Serving cell and described Target cell.
Adopt after the present invention, can significantly improve the reusability of the main scrambler in UMTS network small area, make UE can carry out the switching of detected set.Adopt the present invention identification adjacent area automatically, automatically generate Neighboring Cell List, greatly improved the efficiency of network ruleization and the network optimization.
Brief description of the drawings
Fig. 1 is that in existing network, the main scrambler in homogeneous-frequency adjacent-domain distributes schematic diagram;
Fig. 2 is that the main scrambler in the adjacent area of a heavy adjacent area in existing network distributes schematic diagram;
Fig. 3 is that in existing network, the main scrambler in the adjacent area of double adjacent area distributes schematic diagram;
Fig. 4 is that in existing network, the main scrambler in the adjacent area of triple adjacent areas distributes schematic diagram;
Fig. 5 is the method flow diagram of the main scrambling conflict identification in embodiment of the present invention small area;
Fig. 6 is the main scrambler schematic diagram in adjacent area that in the embodiment of the present invention, the heavy adjacent area for zero lap covering is distributed;
Fig. 7 is synchronisation of nodes process flow diagram in the embodiment of the present invention;
Fig. 8 is the synchronizing process flow chart of eating dishes without rice or wine in the embodiment of the present invention;
Fig. 9 is the main scrambler schematic diagram in adjacent area distributing for the double adjacent area of zero lap covering in the embodiment of the present invention;
Figure 10 is the main scrambler schematic diagram in adjacent area distributing for triple adjacent areas of zero lap covering in the embodiment of the present invention;
Figure 11 is the soft handoff procedure of UMTS network detected set community in the embodiment of the present invention;
Figure 12 is UMTS network automatic identification adjacent area flow process in the embodiment of the present invention.
Embodiment
For making the object, technical solutions and advantages of the present invention clearer, hereinafter in connection with accompanying drawing, embodiments of the invention are elaborated.It should be noted that, in the situation that not conflicting, the combination in any mutually of the feature in embodiment and embodiment in the application.
In the present embodiment, RNC can be by the time difference information of coupling minizone and OFF and the TM information that UE reports, the descending main scrambling code of conflict of qualification, and carry out detected set switching and Automatic Optimal Neighboring Cell List according to this information.Wherein, OFF is Target cell SFN (the System Frame Number that UE measures, System Frame Number) descending DPCCH (the Dedicated Physical Control CHannel that set up with UE, Dedicated Physical Control Channel) between frame inclined to one side, TM is that the code between the descending DPCCH that set up of Target cell SFN and UE that UE measures is inclined to one side.
In the present embodiment, method for distinguishing is known in a kind of subzone main scramble conflict, is applicable to contain in the system of more than 2 community covering, as described in Figure 5, comprising without repeating of identical main scrambler:
Step 1: by synchronisation of nodes process, RNC obtains the SFN-SFN observed time difference between any Liang Ge community;
Step 2:RNC receives after the measurement report that UE sends, therefrom selects an adjacent area as Target cell.RNC is according to the OFF of this Target cell of carrying in this measurement report
targetand Tm
targetvalue, obtains the SFN deviation between the Yu Gai Target cell, Serving cell at the current place of UE;
Step 3:RNC mates with the Serving cell at the current place of UE getting by synchronisation of nodes above-mentioned deviation with the observed time difference between other each neighbor cells, determine this Target cell and be on earth which in the multiple communities that have main scrambling conflict, get rid of the co-frequency cell that main scrambler is identical, accurately identify the identification information of the Target cell that has main scrambling conflict.
Complete after above-mentioned subzone main scramble conflict identification, RNC judges the Ec/No of Target cell and Serving cell, if meet switching condition, just carries out soft handover, and Target cell is added in UE Active Set, completes the soft handover of detected set community.
In addition, complete after above-mentioned subzone main scramble conflict identification, RNC can add Neighboring Cell List by above-mentioned Target cell, automatically generates Neighboring Cell List.
Below in conjunction with accompanying drawing, the implementation method of self-organizing network of the present invention is described in further detail:
As shown in Figure 6, in UMTS network, community A (main scrambler 100) can not repeat with the main scrambler of community B (main scrambler 101), community A and community C (main scrambler 101), community B (main scrambler 101) can be identical with the main scrambler of community C (main scrambler 101), and the main scrambler of the heavy adjacent area that zero lap covers can be identical.RNC can distinguish the adjacent area that main scrambler is identical by the following method:
(1) synchronisation of nodes process
As shown in Figure 7, for each NodeB of RNC subordinate, synchronisation of nodes process comprises:
Step 1:RNC sends the DL NODE SYNCHRONISATION (descendant node synchronization frame) that contains T1 to this NodeB; Wherein, T1 is the RFN (RNC Frame Number, RNC frame number) that RNC sends this descendant node synchronization frame moment;
Step 2:NodeB receives that rear response UL NODE SYNCHRONISATION (upstream node synchronization frame) (containing T2 and T3) is to RNC, wherein: T2 is BFN (the NodeB Frame Number that NodeB receives this descendant node synchronization frame moment, Node B frame number), T3 is the BFN that sends this upstream node synchronization frame moment;
Step 3:RNC can calculate the round time delay of transmission, the deviation between the RFN using the value of this time delay as RNC and the BFN of this NodeB by formula T2-T1+T4-T3.Wherein, T4 is the RFN that RNC receives the upstream node synchronization frame moment that this NodeB reports.
Executing after above-mentioned steps, RNC can obtain the deviation between RFN and the BFN of its each NodeB of subordinate.For each NodeB, due to BFN and SFN (System Frame Number, System Frame Number) differ TCell, so can be by the difference between the BFN deviation of RFN and each NodeB, know under this RNC the deviation between the SFN of Liang Ge community arbitrarily, this deviation is exactly so-called SFN-SFN observed time difference.
(2) air interface synchronization process
As shown in Figure 8, RNC obtains the deviation between current service cell SFN and Target cell SFN by air interface synchronization process, comprises the following steps:
Step 1:UE can be known the time reference of current Serving cell of living in, the namely SFN of Serving cell by cell search process.At RRC (Radio Resource Control, Radio Resource control) connect in process of establishing, RNC can select a DOFF (Default DPCH Offset Value, the DPCH deviant of acquiescence), by RRC message, this DOFF is issued to UE.UE obtains CFN according to formula 1, obtains the OFF of Serving cell by formula 2
sourceand Tm
source.
Formula 1:CFN=((SFN × 38400-DOFF × 512) ÷ 38400) Mod256
Formula 2:OFF+Tm=(SFN-CFN) Mod256
Step 2:UE records the SFN of Target cell
targettime deviation between the dedicated link of having set up.Method is as follows: the time T of the up DPCCH of UE transmitting
uETXwith down link time of reception (DLDPCH
nom) be benchmark, and fixedly delay 1024 chip (T
0), as shown in Equation 3.UE obtains the OFF of Target cell by formula 4
targetand Tm
target, and report RNC;
Formula 3:DLDPCH
nom=T
uETX-T
0
Formula 4:OFF+Tm=(SFN-DLDPCH
nom) Mod256;
Step 3:RNC obtains Target cell OFF
targetand Tm
targetafter, with the OFF of the Serving cell obtaining in step 1
sourceand Tm
sourcecompare, just can obtain the deviation of Serving cell and Target cell SFN.
(3) RNC judging process
The deviation of SFN between Serving cell and Target cell that RNC arrives with air interface synchronization Procedure Acquisition, with by synchronisation of nodes Procedure Acquisition to this Serving cell mate with the SFN-SFN observed time difference of Target cell, and then this Target cell is distinguished from there are other communities of main scrambling conflict with it.In scene as shown in Figure 6, the main scrambler of community B and community C is all that 101, RNC can determine that UE should switch or switch in the C of community toward community B by above-mentioned matching result.
Adopt after said method, for the adjacent area (community C and community D) of double adjacent area as shown in Figure 9, RNC can distribute identical scrambler 102.For the adjacent area (community D and community E) of triple adjacent areas as shown in figure 10, RNC can distribute identical scrambler 103.
As shown in figure 11, after the service NodeB of RNC and Serving cell, the service NodeB of Target cell complete synchronisation of nodes, obtain the SFN-SFN observed time difference between Serving cell and Target cell.UE in CELL_DCH (cell private channel) state records the SFN of Target cell
targettime deviation between the dedicated link of having set up, calculates the OFF of Target cell
targetand Tm
targetreport RNC by measurement report afterwards, carry out soft handover judgement by RNC.Although Target cell and Serving cell do not exist neighboring BS relationship, the time migration that RNC also can go out Target cell and Serving cell by aforementioned air interface synchronization process computation, mates with existing SFN-SFN observed time difference.After the match is successful, RNC determines to carry out soft handover, is the wireless link distribution resource newly increasing by sending wireless link request request target NodeB, then sends out activating set updating to UE, the community of miss-configured neighboring cells is added in UE Active Set, completes the soft switching process of detected set community.
As shown in figure 12, for new site, RNC and this website complete after synchronisation of nodes, are this new site service range Nei community Random assignment subzone main scramble.The detected set measurement report sending according to the UE receiving obtains after the SFN-SFN observed time difference between this website service range Nei community and peripheral cell, and RNC can calculate the positional information of this website.If this positional information is consistent with the positional information that the SFN deviation of the Yu Zhe minizone, other communities obtaining by air interface synchronization process obtains, can think that the subzone main scramble that this website distributes does not exist extremely multiplexing.Otherwise RNC needs Wei Gai community to redistribute a main scrambler, repeat the matching process of aforementioned location information, until be this cell allocation to one rational main scrambler.After main scrambler is assigned, send the detected set measurement report of the surrounding adjacent area of Gai community according to UE, RNC can obtain all neighboring BS information of this community, automatically generates cell neighbor list.
By the present invention, adopt synchronisation of nodes and air interface synchronization process, identify main scrambler identical but do not repeat cover adjacent area, the main scrambler that has solved triple adjacent areas easily causes the problem that scrambler is multiplexing, solve adjacent area leakage and joined the Special Handle of Drop Question causing, improve scrambler reusability simultaneously, made 512 main scramblers in UMTS network become very more than needed.Adopt self-organizing network of the present invention also to support the switching of detected set, support automatically to generate Neighboring Cell List, saved a large amount of manpower and materials costs, particularly the extensive application of micro-base station later, does not need supplementary module to obtain adjacent area, will save great amount of cost yet.
In the present embodiment, a kind of radio network controller, is applied to and contains in the system of more than 2 community covering, comprising without repeating of identical main scrambler:
Observed time difference acquisition module, for by synchronisation of nodes process, obtains System Frame Number (the SFN)-SFN observed time difference between any Liang Ge community;
SFN deviation acquisition module, for the measurement report reporting from subscriber equipment (UE), selects Yi Ge community as Target cell; And the inclined to one side OFF of frame between the downlink dedicated physical control channel (DPCCH) set up of the described Target cell SFN measuring according to the described UE carrying in described measurement report and described UE
targetwith the inclined to one side Tm of code
target, obtain the SFN deviation between the current Serving cell of described UE and described Target cell;
Matching module, for the SFN deviation between described Serving cell and described Target cell that described SFN deviation acquisition module is got, with described observed time difference acquisition module by described synchronisation of nodes Procedure Acquisition to described Serving cell mate with the SFN-SFN observed time difference between described Target cell, confirm the identification information of described Target cell.
Preferably,
Described observed time difference acquisition module, for by synchronisation of nodes process, obtains the SFN-SFN observed time difference between any Liang Ge community, specifically comprises:
Described observed time difference acquisition module, for each Node B (NodeB) for subordinate, sends the descendant node synchronization frame that contains T1 to NodeB; Wherein, T1 is the RNC frame number that described observed time difference acquisition module sends the described descendant node synchronization frame moment; Also, for receiving after the response that described NodeB returns, calculate the deviation between the RNC frame number of described RNC and the NodeB frame number of described NodeB by T2-T1+T4-T3; Wherein, in described response, carry T2 and T3; T2 is the NodeB frame number that described NodeB receives the described descendant node synchronization frame moment, and T3 is the NodeB frame number that sends the described upstream node synchronization frame moment; T4 is the RNC frame number that described observed time difference acquisition module is received the upstream node synchronization frame moment that described NodeB reports; Also, for for any Liang Ge community, according to the deviation between the NodeB frame number of the service NodeB of the RNC frame number of self and these two minizones, obtain the SFN-SFN observed time difference of Zhe Liangge community.
Preferably,
Described SFN deviation acquisition module, for the OFF carrying according to described measurement report
targetand Tm
target, obtain the SFN deviation between the current Serving cell of described UE and described Target cell, specifically comprise:
Described SFN deviation acquisition module, for connecting process of establishing in Radio Resource control (RRC), issues UE by RRC message by the DPCH deviant (DOFF) of the acquiescence of selecting; Wherein, described UE is known the SFN of current Serving cell of living in by cell search process; And described UE calculates the OFF of Serving cell by following formula
sourceand Tm
source:
CFN＝((SFN×38400-DOFF×512)÷38400)Mod256
OFF+Tm＝(SFN-CFN)Mod256
Described UE records the OFF of described Target cell by following formula
targetand Tm
targetand report described RNC;
OFF+Tm＝(SFN-DLDPCH
nom)Mod256
Wherein, DLDPCH
nomfor descending DPCH time of reception;
The described SFN of stating deviation acquisition module is for obtaining the OFF of described Target cell
targetand Tm
targeteafter, with the OFF of described Serving cell
sourceand Tm
sourcecompare, obtain the deviation of the SFN of described Serving cell and described Target cell.
Preferably, described radio network controller also comprises:
Handover module, for switching in definite described Target cell, is the wireless link distribution resource newly increasing by the serving BS of Target cell described in transmission wireless link request request, and described Target cell is increased in UE Active Set.
Preferably,
Described handover module is also for the Neighboring Cell List Zhong community judging described Target cell and do not belong to described UE, after the identification information of described Target cell, described Target cell joined in the Neighboring Cell List of described UE confirming.
In addition, in the present embodiment, another kind of radio network controller, comprising:
Main scrambler distribution module, for the Node B for main scrambler to be allocated (NodeB), completes after synchronisation of nodes with described NodeB, is the main scrambler of described NodeB service range Nei community Random assignment;
Primary importance information computing module, be used for for described NodeB service range Nei community, by synchronisation of nodes process, obtain System Frame Number (the SFN)-SFN observed time difference between this community and other communities, and calculate accordingly the positional information of described NodeB;
Second place information computing module, the measurement report reporting for receiving subscriber equipment (UE); As the information of NodeB service range Nei community as described in containing in measurement report as described in judging, measure the inclined to one side OFF of frame between the SFN of Gai community and downlink dedicated physical control channel (DPCCH) that described UE has set up according to the described UE carrying in described measurement report
targetwith the inclined to one side Tm of code
target, obtain the SFN deviation between the current Yu Gai community, Serving cell of UE, and calculate accordingly the positional information of described NodeB;
Matching module, be used for the positional information of the described NodeB that described primary importance information computing module is calculated, the positional information of the described NodeB calculating with described second place information computing module is mated, as consistent in the two, and the main scrambler of confirming as described NodeB distribution is correct.
Preferably,
Described primary importance information computing module, for by synchronisation of nodes process, obtains the SFN-SFN observed time difference between this community and other communities, specifically comprises:
Described primary importance information computing module, for for the NodeB of described main scrambler to be allocated and other any one NodeB of subordinate, sends respectively the descendant node synchronization frame that contains T1 to NodeB; Wherein, T1 is the RNC frame number that described primary importance information computing module sends the described descendant node synchronization frame moment;
Also, for receiving after the response of described NodeB reply, calculate the deviation between the RNC frame number of described RNC and the NodeB frame number of this NodeB by T2-T1+T4-T3; Wherein, in described response, carry T2 and T3; T2 is the NodeB frame number that described NodeB receives the described descendant node synchronization frame moment, and T3 is the NodeB frame number that sends the described upstream node synchronization frame moment; T4 is the RNC frame number that described primary importance information computing module is received the upstream node synchronization frame moment that described NodeB reports;
Also, for other any one NodeB of the NodeB for described main scrambler to be allocated and subordinate, according to the deviation between the NodeB frame number of the service NodeB of the RNC frame number of self and these two minizones, obtain the SFN-SFN observed time difference of Zhe Liangge community.
Preferably,
The OFF of described second place information computing module for carrying according to described measurement report
targetand Tm
target, obtain the SFN deviation between the current Serving cell of described UE and described Target cell, specifically comprise:
Described second place information computing module, for connecting process of establishing in Radio Resource control (RRC), is issued UE by RRC message by the DPCH deviant (DOFF) of the acquiescence of selecting; Wherein, described UE is known the SFN of current Serving cell of living in by cell search process; And described UE calculates the OFF of Serving cell by following formula
sourceand Tm
source:
CFN＝((SFN×38400-DOFF×512)÷38400)Mod256
OFF+Tm＝(SFN-CFN)Mod256
Described UE records the OFF of described Target cell by following formula
targetand Tm
targetand report described RNC;
OFF+Tm＝(SFN-DLDPCH
nom)Mod256
Wherein, DLDPCH
nomfor descending DPCH time of reception;
The described SFN of stating deviation acquisition module is for obtaining the OFF of described Target cell
targetand Tm
targeteafter, with the OFF of described Serving cell
sourceand Tm
sourcecompare, obtain the deviation of the SFN of described Serving cell and described Target cell.
One of ordinary skill in the art will appreciate that all or part of step in said method can carry out instruction related hardware by program and complete, described program can be stored in computer-readable recording medium, as read-only memory, disk or CD etc.Alternatively, all or part of step of above-described embodiment also can realize with one or more integrated circuits.Correspondingly, the each module/unit in above-described embodiment can adopt the form of hardware to realize, and also can adopt the form of software function module to realize.The present invention is not restricted to the combination of the hardware and software of any particular form.
The foregoing is only the preferred embodiments of the present invention, be not intended to limit protection scope of the present invention.According to summary of the invention of the present invention; also can there be other various embodiments; in the situation that not deviating from spirit of the present invention and essence thereof; those of ordinary skill in the art are when making according to the present invention various corresponding changes and distortion; within the spirit and principles in the present invention all; any amendment of doing, be equal to replacement, improvement etc., within protection scope of the present invention all should be included in.
Claims (18)
1. a method for distinguishing is known in subzone main scramble conflict, is applied to and contains in the system of more than 2 community covering, comprising without repeating of identical main scrambler:
By synchronisation of nodes process, radio network controller (RNC) obtains System Frame Number (the SFN)-SFN observed time difference between any Liang Ge community;
The measurement report that described RNC reports from subscriber equipment (UE), select Yi Ge community as Target cell; And the inclined to one side OFF of frame between the downlink dedicated physical control channel (DPCCH) set up of the described Target cell SFN measuring according to the described UE carrying in described measurement report and described UE
targetwith the inclined to one side Tm of code
target, obtain the SFN deviation between the current Serving cell of described UE and described Target cell;
Described RNC is by the SFN deviation between described Serving cell and described Target cell, with by described synchronisation of nodes Procedure Acquisition to described Serving cell mate with the SFN-SFN observed time difference between described Target cell, confirm the identification information of described Target cell.
2. the method for claim 1, is characterized in that:
Described by synchronisation of nodes process, RNC obtains the SFN-SFN observed time difference between any Liang Ge community, specifically comprises:
For each Node B (NodeB) of subordinate, described RNC sends the descendant node synchronization frame that contains T1 to NodeB; Wherein, T1 is the RNC frame number that described RNC sends the described descendant node synchronization frame moment;
Described NodeB receives that rear response upstream node synchronization frame, to described RNC, wherein carries T2 and T3; Wherein, T2 is the NodeB frame number that described NodeB receives the described descendant node synchronization frame moment, and T3 is the NodeB frame number that sends the described upstream node synchronization frame moment;
Described RNC calculates the deviation between the RNC frame number of described RNC and the NodeB frame number of described NodeB by T2-T1+T4-T3; Wherein, T4 is the RNC frame number that described RNC receives the upstream node synchronization frame moment that described NodeB reports;
For any Liang Ge community, described RNC, according to the deviation between the NodeB frame number of the service NodeB of the RNC frame number of self and these two minizones, obtains the SFN-SFN observed time difference of Zhe Liangge community.
3. method as claimed in claim 1 or 2, is characterized in that:
Described RNC is according to the OFF carrying in described measurement report
targetand Tm
target, obtain the SFN deviation between the current Serving cell of described UE and described Target cell, specifically comprise:
UE is known the SFN of current Serving cell of living in by cell search process;
Connect in process of establishing in Radio Resource control (RRC), described RNC issues described UE by RRC message by the DPCH deviant (DOFF) of the acquiescence of selecting;
Described UE calculates the OFF of Serving cell by following formula
sourceand Tm
source:
CFN＝((SFN×38400-DOFF×512)÷38400)Mod256
OFF+Tm＝(SFN-CFN)Mod256
Described UE records the OFF of described Target cell by following formula
targetand Tm
targetand report described RNC;
OFF+Tm＝(SFN-DLDPCH
nom)Mod256
Wherein, DLDPCH
nomfor descending DPCH time of reception;
Described RNC obtains the OFF of described Target cell
targetand Tm
targeteafter, with the OFF of described Serving cell
sourceand Tm
sourcecompare, obtain the deviation of the SFN of described Serving cell and described Target cell.
4. a method for the soft handover of detected set community, is applied to and contains in the system of more than 2 community covering, comprising without repeating of identical main scrambler:
By synchronisation of nodes process, radio network controller (RNC) obtains System Frame Number (the SFN)-SFN observed time difference between any Liang Ge community;
The measurement report that described RNC reports from subscriber equipment (UE), select Yi Ge community as Target cell; And the inclined to one side OFF of frame between the downlink dedicated physical control channel (DPCCH) set up of the described Target cell SFN measuring according to the described UE carrying in described measurement report and described UE
targetwith the inclined to one side Tm of code
target, obtain the SFN deviation between the current Serving cell of described UE and described Target cell;
Described RNC is by the SFN deviation between described Serving cell and described Target cell, with by described synchronisation of nodes Procedure Acquisition to described Serving cell mate with the SFN-SFN observed time difference between described Target cell, confirm the identification information of described Target cell;
Described RNC determines that described Target cell can switch, and is the wireless link distribution resource newly increasing by sending the serving BS of Target cell described in wireless link request request, and described Target cell is increased in UE Active Set.
5. method as claimed in claim 4, is characterized in that, also comprises:
As described in judging Target cell do not belong to as described in the Neighboring Cell List Zhong community of UE, after the identification information of described Target cell, described Target cell is joined in the Neighboring Cell List of described UE confirming.
6. the method as described in claim 4 or 5, is characterized in that:
Described by synchronisation of nodes process, RNC obtains the SFN-SFN observed time difference between any Liang Ge community, specifically comprises:
For each Node B (NodeB) of subordinate, described RNC sends the descendant node synchronization frame that contains T1 to NodeB; Wherein, T1 is the RNC frame number that described RNC sends the described descendant node synchronization frame moment;
Described NodeB receives that rear response upstream node synchronization frame, to described RNC, wherein carries T2 and T3; Wherein, T2 is the NodeB frame number that described NodeB receives the described descendant node synchronization frame moment, and T3 is the NodeB frame number that sends the described upstream node synchronization frame moment;
Described RNC calculates the deviation between the RNC frame number of described RNC and the NodeB frame number of this NodeB by T2-T1+T4-T3; Wherein, T4 is the RNC frame number that described RNC receives the upstream node synchronization frame moment that described NodeB reports;
For any Liang Ge community, described RNC, according to the deviation between the NodeB frame number of the service NodeB of the RNC frame number of self and these two minizones, obtains the SFN-SFN observed time difference of Zhe Liangge community.
7. the method as described in claim 4 or 5, is characterized in that:
Described RNC is according to the OFF carrying in described measurement report
targetand Tm
target, obtain the SFN deviation between the current Serving cell of described UE and described Target cell, specifically comprise:
Described UE by cell search process know current Serving cell of living in SFN;
Connect in process of establishing in Radio Resource control (RRC), described RNC issues described UE by RRC message by the DPCH deviant (DOFF) of the acquiescence of selecting;
Described UE calculates the OFF of Serving cell by following formula
sourceand Tm
source:
CFN＝((SFN×38400-DOFF×512)÷38400)Mod256
OFF+Tm＝(SFN-CFN)Mod256
Described UE records the OFF of described Target cell by following formula
targetand Tm
targetand report described RNC:
OFF+Tm＝(SFN-DLDPCH
nom)Mod256
Wherein, DLDPCH
nomfor descending DPCH time of reception;
Described RNC obtains the OFF of described Target cell
targetand Tm
targeteafter, with the OFF of described Serving cell
sourceand Tm
sourcecompare, obtain the deviation of the SFN of described Serving cell and described Target cell.
8. the method that main scrambler distributes, comprising:
For the Node B (NodeB) of main scrambler to be allocated, radio network controller (RNC) completes after synchronisation of nodes with described NodeB, is the main scrambler of described NodeB service range Nei community Random assignment;
For described NodeB service range Nei community, by synchronisation of nodes process, described RNC obtains System Frame Number (the SFN)-SFN observed time difference between this community and other communities, and calculates accordingly the positional information of described NodeB;
Described RNC receives the measurement report that subscriber equipment (UE) reports; As the information of NodeB service range Nei community as described in containing in measurement report as described in judging, the inclined to one side OFFtarget of frame and the inclined to one side Tmtarget of code between the SFN that measures Gai community according to the described UE carrying in described measurement report and the downlink dedicated physical control channel (DPCCH) that described UE has set up, obtain the SFN deviation between the current Yu Gai community, Serving cell of UE, and calculate accordingly the positional information of described NodeB;
Described RNC is the positional information of the described NodeB calculating according to described measurement report, with by described synchronisation of nodes Procedure Acquisition to the positional information of described NodeB mate, as consistent in the two, confirm as the main scrambler that described NodeB distributes correct.
9. method as claimed in claim 8, is characterized in that:
Described by synchronisation of nodes process, described RNC obtains the SFN-SFN observed time difference between this community and other communities, specifically comprises:
For the NodeB of described main scrambler to be allocated and other any one NodeB of subordinate, described RNC sends respectively the descendant node synchronization frame that contains T1 to NodeB; Wherein, T1 is the RNC frame number that described RNC sends the described descendant node synchronization frame moment;
NodeB receives that rear response upstream node synchronization frame, to described RNC, wherein carries T2 and T3; Wherein, T2 is the NodeB frame number that described NodeB receives the described descendant node synchronization frame moment, and T3 is the NodeB frame number that sends the described upstream node synchronization frame moment;
Described RNC calculates the deviation between the RNC frame number of described RNC and the NodeB frame number of this NodeB by T2-T1+T4-T3; Wherein, T4 is the RNC frame number that described RNC receives the upstream node synchronization frame moment that described NodeB reports;
Any for other of the NodeB of described main scrambler to be allocated and subordinate, described RNC, according to the deviation between the NodeB frame number of the service NodeB of the RNC frame number of self and these two minizones, obtains the SFN-SFN observed time difference of Zhe Liangge community.
10. method as claimed in claim 8 or 9, is characterized in that:
Described RNC is according to the SFN and the OFF that carry described UE measurement Gai community in described measurement report
targetand Tm
target, obtain the SFN deviation between the current Yu Gai community, Serving cell of described UE, specifically comprise:
Described UE is known the SFN of current Serving cell of living in by cell search process;
Connect in process of establishing in Radio Resource control (RRC), described RNC issues described UE by RRC message by the DPCH deviant (DOFF) of the acquiescence of selecting;
Described UE calculates the OFF of Serving cell by following formula
sourceand Tm
source:
CFN＝((SFN×38400-DOFF×512)÷38400)Mod256
OFF+Tm＝(SFN-CFN)Mod256
Described UE records the OFF of the NodeB service range Nei community of described main scrambler to be allocated by following formula
targetand Tm
targetand report described RNC:
OFF+Tm＝(SFN-DLDPCH
nom)Mod256
Wherein, DLDPCH
nomfor descending DPCH time of reception;
Described RNC obtain in the NodeB service range of described main scrambler to be allocated OFF
targetand Tm
targeteafter, with the OFF of described Serving cell
sourceand Tm
sourcecompare, obtain the deviation of the SFN of the NodeB service range Nei community of described Serving cell and described main scrambler to be allocated.
11. 1 kinds of radio network controllers, are applied to and contain in the system of more than 2 community covering, comprising without repeating of identical main scrambler:
Observed time difference acquisition module, for by synchronisation of nodes process, obtains System Frame Number (the SFN)-SFN observed time difference between any Liang Ge community;
SFN deviation acquisition module, for the measurement report reporting from subscriber equipment (UE), selects Yi Ge community as Target cell; And the inclined to one side OFF of frame between the downlink dedicated physical control channel (DPCCH) set up of the described Target cell SFN measuring according to the described UE carrying in described measurement report and described UE
targetwith the inclined to one side Tm of code
target, obtain the SFN deviation between the current Serving cell of described UE and described Target cell;
Matching module, for the SFN deviation between described Serving cell and described Target cell that described SFN deviation acquisition module is got, with described observed time difference acquisition module by described synchronisation of nodes Procedure Acquisition to described Serving cell mate with the SFN-SFN observed time difference between described Target cell, confirm the identification information of described Target cell.
12. radio network controllers as claimed in claim 11, is characterized in that:
Described observed time difference acquisition module, for by synchronisation of nodes process, obtains the SFN-SFN observed time difference between any Liang Ge community, specifically comprises:
Described observed time difference acquisition module, for each Node B (NodeB) for subordinate, sends the descendant node synchronization frame that contains T1 to NodeB; Wherein, T1 is the RNC frame number that described observed time difference acquisition module sends the described descendant node synchronization frame moment; Also, for receiving after the response that described NodeB returns, calculate the deviation between the RNC frame number of described RNC and the NodeB frame number of described NodeB by T2-T1+T4-T3; Wherein, in described response, carry T2 and T3; T2 is the NodeB frame number that described NodeB receives the described descendant node synchronization frame moment, and T3 is the NodeB frame number that sends the described upstream node synchronization frame moment; T4 is the RNC frame number that described observed time difference acquisition module is received the upstream node synchronization frame moment that described NodeB reports; Also, for for any Liang Ge community, according to the deviation between the NodeB frame number of the service NodeB of the RNC frame number of self and these two minizones, obtain the SFN-SFN observed time difference of Zhe Liangge community.
13. radio network controllers as described in claim 11 or 12, is characterized in that:
Described SFN deviation acquisition module, for the OFF carrying according to described measurement report
targetand Tm
target, obtain the SFN deviation between the current Serving cell of described UE and described Target cell, specifically comprise:
Described SFN deviation acquisition module, for connecting process of establishing in Radio Resource control (RRC), issues UE by RRC message by the DPCH deviant (DOFF) of the acquiescence of selecting; Wherein, described UE is known the SFN of current Serving cell of living in by cell search process; And described UE calculates the OFF of Serving cell by following formula
sourceand Tm
source:
CFN＝((SFN×38400-DOFF×512)÷38400)Mod256
OFF+Tm＝(SFN-CFN)Mod256
Described UE records the OFF of described Target cell by following formula
targetand Tm
targetand report described RNC;
OFF+Tm＝(SFN-DLDPCH
nom)Mod256
Wherein, DLDPCH
nomfor descending DPCH time of reception;
The described SFN of stating deviation acquisition module is for obtaining the OFF of described Target cell
targetand Tm
targeteafter, with the OFF of described Serving cell
sourceand Tm
sourcecompare, obtain the deviation of the SFN of described Serving cell and described Target cell.
14. radio network controllers as described in claim 11 or 12, is characterized in that, also comprise:
Handover module, for switching in definite described Target cell, is the wireless link distribution resource newly increasing by the serving BS of Target cell described in transmission wireless link request request, and described Target cell is increased in UE Active Set.
15. radio network controllers as claimed in claim 14, is characterized in that:
Described handover module is also for the Neighboring Cell List Zhong community judging described Target cell and do not belong to described UE, after the identification information of described Target cell, described Target cell joined in the Neighboring Cell List of described UE confirming.
16. 1 kinds of radio network controllers, comprising:
Main scrambler distribution module, for the Node B for main scrambler to be allocated (NodeB), completes after synchronisation of nodes with described NodeB, is the main scrambler of described NodeB service range Nei community Random assignment;
Primary importance information computing module, be used for for described NodeB service range Nei community, by synchronisation of nodes process, obtain System Frame Number (the SFN)-SFN observed time difference between this community and other communities, and calculate accordingly the positional information of described NodeB;
Second place information computing module, the measurement report reporting for receiving subscriber equipment (UE); As the information of NodeB service range Nei community as described in containing in measurement report as described in judging, measure the inclined to one side OFF of frame between the SFN of Gai community and downlink dedicated physical control channel (DPCCH) that described UE has set up according to the described UE carrying in described measurement report
targetwith the inclined to one side Tm of code
target, obtain the SFN deviation between the current Yu Gai community, Serving cell of UE, and calculate accordingly the positional information of described NodeB;
Matching module, be used for the positional information of the described NodeB that described primary importance information computing module is calculated, the positional information of the described NodeB calculating with described second place information computing module is mated, as consistent in the two, and the main scrambler of confirming as described NodeB distribution is correct.
17. radio network controllers as claimed in claim 16, is characterized in that:
Described primary importance information computing module, for by synchronisation of nodes process, obtains the SFN-SFN observed time difference between this community and other communities, specifically comprises:
Described primary importance information computing module, for for the NodeB of described main scrambler to be allocated and other any one NodeB of subordinate, sends respectively the descendant node synchronization frame that contains T1 to NodeB; Wherein, T1 is the RNC frame number that described primary importance information computing module sends the described descendant node synchronization frame moment;
Also, for receiving after the response of described NodeB reply, calculate the deviation between the RNC frame number of described RNC and the NodeB frame number of this NodeB by T2-T1+T4-T3; Wherein, in described response, carry T2 and T3; T2 is the NodeB frame number that described NodeB receives the described descendant node synchronization frame moment, and T3 is the NodeB frame number that sends the described upstream node synchronization frame moment; T4 is the RNC frame number that described primary importance information computing module is received the upstream node synchronization frame moment that described NodeB reports;
Also, for other any one NodeB of the NodeB for described main scrambler to be allocated and subordinate, according to the deviation between the NodeB frame number of the service NodeB of the RNC frame number of self and these two minizones, obtain the SFN-SFN observed time difference of Zhe Liangge community.
18. radio network controllers as described in claim 16 or 17, is characterized in that:
The OFF of described second place information computing module for carrying according to described measurement report
targetand Tm
target, obtain the SFN deviation between the current Serving cell of described UE and described Target cell, specifically comprise:
Described second place information computing module, for connecting process of establishing in Radio Resource control (RRC), is issued UE by RRC message by the DPCH deviant (DOFF) of the acquiescence of selecting; Wherein, described UE is known the SFN of current Serving cell of living in by cell search process; And described UE calculates the OFF of Serving cell by following formula
sourceand Tm
source:
CFN＝((SFN×38400-DOFF×512)÷38400)Mod256
OFF+Tm＝(SFN-CFN)Mod256
Described UE records the OFF of described Target cell by following formula
targetand Tm
targetand report described RNC;
OFF+Tm＝(SFN-DLDPCH
nom)Mod256
Wherein, DLDPCH
nomfor descending DPCH time of reception;
The described SFN of stating deviation acquisition module is for obtaining the OFF of described Target cell
targetand Tm
targeteafter, with the OFF of described Serving cell
sourceand Tm
sourcecompare, obtain the deviation of the SFN of described Serving cell and described Target cell.
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