CN103037462B - Based on cell switching method and the device of Femto framework - Google Patents
Based on cell switching method and the device of Femto framework Download PDFInfo
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Abstract
The invention discloses a kind of switching method and apparatus based on Femto framework, comprise: the service Femto base station at the current place of mobile station MS is when determining that described MS has cell merge demand, according to the adjacent cell list information of self maintained, and the cell radio resource state information of each adjacent cell obtained in advance, determine a target handover cell that described MS can be received to cut; And described MS is switched in the target handover cell determined.Use the switching method and apparatus based on Femto framework provided by the invention, can avoid extending during the cell merge based on Femto framework existed in prior art, the problem that switching efficiency is low.
Description
Technical field
The present invention relates to wireless communication technology field, especially relate to a kind of cell switching method based on Femto framework and device.
Background technology
Along with the fast development of mobile communication technology, the network configuration of mobile communication system is also from global system for mobile communications (GSM, GlobalSystemOfMobileCommunication) the flattening network architecture evolution gradually that complicated Open network architecture is changed to interconnection agreement (IP, InternetProtoal) between whole network.The network architecture of flattening has agreement flow process simply, and protocol entity is few, also has intermediate network node few simultaneously, makes the advantage such as the time delay of process business and Internet Transmission time delay reduction, can also support high-speed data service simultaneously, promotes user perceptibility.
The mobile network of employing Femto framework is the one performance of network flattening trend, decreases the intermediate link of network data transmission and reduces data delay, greatly simplify the structure of mobile access network.The mobile communication network structure schematic diagram based on Femto framework as shown in Figure 1, comprise travelling carriage (MS, MobileStation), multiple Femto base station, at least one community of the quorum sensing inhibitor of Femto Base Transmitter CELL, gateway (GW, Gateway) node, Femto operation management maintain center, core net (CN, CoreNetwork), based in the cell switching method of Femto framework in prior art, smoothing and the filtering process of the measurement result that Femto base station will report the measurement result of base station side and MS, then judge that the MS of report measurement results is the need of being switched to neighbor cell according to level and smooth and filtering result, when judged result is for being, the current measurement report providing the Femto base station (i.e. serving BS) of service will report according to MS for this MS, with the adjacent cell list of serving BS self maintained, according to certain rule, sorted in adjacent cell list Zhong Ge community, the community that makes number one is chosen as target handover cell in the adjacent cell list of serving BS after sequence, serving BS attempts this MS to be switched to target handover cell, when the Radio Resource of this target handover cell meets the demands, then this MS can successfully switch into target handover cell by serving BS, otherwise this MS cannot successfully switch into target handover cell by serving BS, deputy community is come again as target handover cell in adjacent cell list after following serving BS can continue selected and sorted, and again attempt this MS to be switched to this target handover cell redefined according to said process, the like, until select a suitable community in the adjacent cell list of serving BS after sequence as target handover cell, and till this MS successful switch is entered this target handover cell.
This cell switching method based on Femto framework of the prior art, the current service Femto base station of MS is when monitoring MS and needing to carry out cell merge, need in the adjacent cell list after sequence, to select community as target handover cell from front to back successively, and will attempt respectively MS being switched to this target handover cell, till successful switch for the target handover cell of each selection.Like this when the Radio Resource that the target handover cell selected is current is in higher load condition, then can there is the situation to target handover cell handoff failure, therefore current service Femto base station may need to carry out trial switching respectively for different target handover cell, thus add handover delay, reduce switching efficiency, and then have influence on the communication quality of MS.
Summary of the invention
Embodiments provide a kind of cell switching method based on Femto framework and device, extend during in order to solve the cell merge based on Femto framework existed in prior art, the problem that switching efficiency is low.
A kind of cell switching method based on Femto framework, comprise: the service Femto base station at the current place of mobile station MS is when determining that described MS has cell merge demand, according to the adjacent cell list information of self maintained, and the cell radio resource state information of each adjacent cell obtained in advance, determine a target handover cell that described MS can be received to cut; And described MS is switched in the target handover cell determined.
A kind of Femto base station, comprising: radio resource state interactive unit, for receiving the cell radio resource state information of each adjacent cell of community, place, described Femto base station; And the cell radio resource state information of the community of described Femto base station coverage is sent to each adjacent cell of community, place, described Femto base station; Memory cell, for storing the cell list information of each adjacent cell of community, place, described Femto base station, and the cell radio resource state information of each adjacent cell of radio resource state interactive unit reception; Determining unit, for when determining that mobile station MS that described Femto base station transmit signals covers has cell merge demand, according to the adjacent cell list information of described cell stores, and the cell radio resource state information of each adjacent cell, determine a target handover cell that described MS can be received to cut; Switch unit, for being switched to described MS in target handover cell that determining unit determines.
A kind of mobile communication system based on Femto framework, comprise at least one Femto base station, each Femto base station is used for when determining that the mobile station MS of self administering has cell merge demand, according to the adjacent cell list information of self maintained, and the cell radio resource state information of each adjacent cell obtained in advance, determine a target handover cell that described MS can be received to cut; And described MS is switched in the target handover cell determined.
The beneficial effect of the embodiment of the present invention is as follows:
The cell switching method based on Femto framework that the embodiment of the present invention provides and switching device shifter, the service Femto base station at the place, Serving cell at the current place of MS is when detecting that MS needs to carry out cell merge, service Femto base station is by obtaining adjacent cell list and the adjacent cell radio resource state information of self maintained, and determine a target handover cell that MS can be received to cut according to the information obtained, and MS is switched to the target handover cell determined from current service cell, thus avoid in prior art, service Femto base station in the community at the current place of MS is when detecting that MS needs to carry out cell merge, select community as target handover cell in the adjacent cell list of service Femto base station after sequence from front to back successively, and MS will be attempted respectively to be switched to this target handover cell for the target handover cell of each selection, till successful switch, and extend during the cell merge caused, the problem that switching efficiency is low, thus improve the communication quality of MS.
Accompanying drawing explanation
Fig. 1 is the mobile communication system schematic diagram based on Femto framework;
Fig. 2 is in the embodiment of the present invention one, and deterministic process flow chart is chosen in the target handover cell based on Femto framework of proposition;
Fig. 3 is in the embodiment of the present invention one, by arranging the mode of timer between the Femto base station of proposition, and the current radio resource service condition schematic diagram of the community of the quorum sensing inhibitor of mutual each Base Transmitter;
Fig. 4 is in the embodiment of the present invention one, the service Femto base station of proposition based on event triggering receive the adjacent Femto Base Transmitter that this adjacent Femto base station sends the current Radio Resource service condition schematic diagram of the adjacent cell that covers of signal;
Fig. 5 is in the embodiment of the present invention, the service Femto base station hand-off execution process flow chart based on Femto framework of proposition;
Fig. 6 is in the embodiment of the present invention, the Femto architecture of base station block diagram of proposition;
Fig. 7 is in the embodiment of the present invention, the structured flowchart of the first determining unit in the Femto base station of proposition;
Fig. 8 is in the embodiment of the present invention, the structured flowchart of the second determining unit in the Femto base station of proposition.
Embodiment
In order to realize object of the present invention, the cell switching method based on Femto framework that the embodiment of the present invention provides and switching device shifter, service Femto base station in the community at the current place of MS is when detecting that MS needs to carry out cell merge, service Femto base station is by obtaining adjacent cell list and the adjacent cell radio resource state information of self maintained, and determine a target handover cell that MS can be received to cut according to the information obtained, certainly can be optimum target switching cell, and MS is switched to the target handover cell determined from current service cell, thus avoid in prior art, service Femto base station in the community at the current place of MS is when detecting that MS needs to carry out cell merge, select community as target handover cell in the adjacent cell list of service Femto base station after sequence from front to back successively, and MS will be attempted respectively to be switched to this target handover cell for the target handover cell of each selection, till successful switch, and extend during the cell merge caused, the problem that switching efficiency is low, thus improve the communication quality of MS.
Below in conjunction with each accompanying drawing, the main of embodiment of the present invention technical scheme is realized principle, embodiment and set forth in detail the beneficial effect that should be able to reach.
As shown in Figure 1, for the mobile communication system of the mobile communication system figure based on Femto framework, Femto framework comprises Femto base station, at least one community of the quorum sensing inhibitor of a Femto Base Transmitter, is in the MS in different districts, GW node, Femto operation management maintain center, CN.Wherein:
Mobile communication system based on Femto framework comprises at least one Femto base station, Femto base station is transmitted the Radio Resource service condition of covered all communities, periodically or event send to other Femto base stations triggeringly, and the Radio Resource service condition of each adjacent cell sent according to the adjacent Femto base station received, build the list of adjacent cell radio resource state, for use in the target handover cell selecting MS to be switched to.Meanwhile, according to level and smooth and filtering result, the smoothing and filtering process of the measurement result that Femto base station will report to the measurement result of base station side and MS, then judges that the MS of report measurement results is the need of being switched to neighbor cell.
Wherein, Femto base station is transmitted the Radio Resource service condition of covered all communities, periodically or event send to other Femto base stations triggeringly, the Radio Resource service condition that can be, but not limited to the community covered for signal that Femto base station is launched sends with the form of radio resource state message bag.
Wherein, Femto base station periodically sends the radio resource state message bag of all communities of the quorum sensing inhibitor that it is launched to other Femto base stations, Femto base station can be, but not limited to by pre-setting timer, when timer reaches the numerical value preset, trigger Femto base station sends radio resource state message bag from all communities of the quorum sensing inhibitor of this Femto Base Transmitter to other Femto base stations.
Femto event sends the radio resource state message bag of all communities of the quorum sensing inhibitor that it is launched triggeringly to other Femto base stations, can be, but not limited to Femto base station when judging that the cell radio resource at the current place of MS is deficient, then restart timer, trigger Femto base station sends radio resource state message bag from all communities of the quorum sensing inhibitor of this Femto Base Transmitter to other Femto base stations.Femto base station when the usable radio resources of community at the current place of MS being detected lower than a setting threshold, can judge that the Radio Resource of the community at the current place of MS is deficient.
Wherein, the radio resource state message packet protocol parameter of community comprises: Serving cell IP, Target cell IP, Serving cell Cell-ID, Target cell Cell-ID, Serving cell LAC, No. LAC, Target cell and cell radio resource status architecture etc.Femto base station is according to the cell radio resource status message bag received, analyze the radio resource state structure of each community comprised in cell radio resource state bag, the Radio Resource load condition of each community is arranged according to a definite sequence, builds the list of adjacent cell radio resource state.In the embodiment that the present invention proposes, the community that little for cell radio resource load, Ji Gai community can also receive more MS to cut is ranked the first, and represent by sequence number " 0 ", the like, until by drained for all communities.
Femto base station is according to the adjacent cell radio resource state list of the adjacent cell list of self maintained and structure, in adjacent cell list, choose a target handover cell that the MS of switching demand can be received to cut, MS is switched in this target handover cell determined.
GW node and core net, the Internet service under all Femto frameworks all via GW node core network access, then is linked in the Internet by core net.When MS is switched to target handover cell by service Femto base station, need to send handover request by GW node to the Femto base station in target handover cell, and after switching completes, the Femto base station in target handover cell returns switching result by GW node to service Femto base station.
Femto operation management maintain center, for arranging the configuration information of all communities of the quorum sensing inhibitor of each Femto Base Transmitter, Femto base station store configuration information in units of community, configuration information comprises subdistrict frequency point, cell ID (ID, Identity), and the management mark in the scope that covers of the community signal that whether is in current Femto Base Transmitter, Femto operation management maintain center also will arrange the relevant informations such as the IP address of each community.
MS, is responsible for measuring based on the down-link performance of the mobile communication system of Femto framework and the signal strength signal intensity that receives from peripheral cell.
Embodiment one
The cell switching method based on Femto framework that the embodiment of the present invention proposes comprises target handover cell and chooses deterministic process and hand-off execution process, is introduced respectively below to two processing procedures.
As shown in Figure 2, the target handover cell based on Femto framework proposed for the embodiment of the present invention is chosen and is determined flow chart;
Step 21, for MS provides the service Femto base station of service when judging that MS needs to be switched to adjacent cell, obtains the adjacent cell radio resource state list of self maintained;
Smoothing and the filtering process of the measurement result providing the service Femto base station of service will report the measurement result of base station side and MS for MS, then judge that the MS of report measurement results is the need of being switched to neighbor cell according to level and smooth and filtering result, when judged result is for being, the measurement report that will report according to MS, obtains adjacent cell list information and the adjacent cell radio resource state list information of self maintained.
Wherein adjacent cell radio resource state list is the current radio resource service condition of the community of the quorum sensing inhibitor of this adjacent Femto Base Transmitter that Femto base station sends according to the adjacent Femto base station received, the adjacent cell radio resource state list of structure.
Particularly, as shown in Figure 3, the current radio resource service condition of the community of the quorum sensing inhibitor of mutual each Base Transmitter between Femto base station, can be, but not limited to following two kinds of modes:
Method is the current Radio Resource service condition in community that the current signal providing the service Femto base station of service to receive this adjacent Femto Base Transmitter that this adjacent Femto base station periodically sends for MS covers, and the current Radio Resource service condition in each community covered according to the signal of this adjacent Femto Base Transmitter received builds the list of adjacent cell radio resource state.
Particularly, the current Radio Resource service condition in each community that the signal that Femto base station periodically sends each Femto Base Transmitter covers can by arranging the mode of timer, the setting of timer, can be set to the identical time, also can arrange the different time.
Another kind method be service Femto base station based on event triggering receive the adjacent Femto Base Transmitter that this adjacent Femto base station sends the current Radio Resource service condition of the adjacent cell that covers of signal.As shown in Figure 4, can be, but not limited to provide the service Femto base station of service to receive this adjacent Femto base station when judging the current usable radio resources in community that this adjacent Femto base station transmit signals covers lower than setting threshold for current for MS, the Radio Resource service condition that the community that this adjacent Femto base station transmit signals of transmission covers is current.The Radio Resource service condition current according to each community of the quorum sensing inhibitor of the adjacent Femto Base Transmitter of this adjacent Femto base station transmission received, builds the list of adjacent cell radio resource state.
Particularly, (transmission) can be received based on the form of radio resource state message bag during the Radio Resource service condition that between Femto base station, reception (transmission) its each community is current.
More specifically, the protocol parameter of radio resource state message bag comprises Serving cell IP, Target cell IP, Serving cell Cell-ID, Target cell Cell-ID, Serving cell LAC, Target cell LAC and cell radio resource status architecture etc.
Above-mentioned Femto base station is according to each cell radio resource service condition obtained, build the process of adjacent cell Radio Resource list, it is the Radio Resource service condition of each community of the quorum sensing inhibitor launched based on different Femto base station, when Femto base station judges the community that the signal that the community that it will obtain Radio Resource service condition belongs to this Base Transmitter covers, then directly obtain the Radio Resource service condition of the community of the quorum sensing inhibitor of this Base Transmitter.
Step 22, according to the adjacent cell radio resource state list that step 21 gets, selects cell radio resource state can meet the cell information of MS incision in adjacent cell list;
Detailed process can be: service Femto base station is in the list of adjacent cell radio resource state, judge whether the radio resource state of adjacent cell radio resource state list Zhong Ge community can support that MS cuts from front to back successively, if judged result is yes, carry out following step 23, if judged result is no, service Femto base station continues in the list of adjacent cell radio resource state, select radio resource state can support the community that MS cuts.
Step 23, the cell radio resource state according to step 22 chooses result, choose in the adjacent cell list of Femto base station maintenance can MS be supported to cut target handover cell.
Adjacent cell list is setting up the Femto base station initial stage, and the community configured information under each base station arranged by Femto base station operation management maintenance center, each Femto base station stores relevant configuration information in units of community.Wherein, the information on adjacent cell list comprises the information such as the management mark in scope that signal that whether community ID, subdistrict frequency point and this community are in current Femto Base Transmitter covers.
The Radio Resource using state determined in conjunction with the relevant information in adjacent cell list and step 22 can meet the cell information of MS incision, determines a target handover cell that MS can be received to cut.
From the description stated in embodiment one, the quantity that the MS target handover cell determined may exist not only one, be specially, the Radio Resource using state that there is multiple adjacent cell in the adjacent cell list that serving BS is safeguarded can both support the access of MS, no matter which target handover cell MS is linked into, and all can ensure normally carrying out of communication service.
Embodiment two
The present embodiment, on the basis of above-described embodiment one, further according to the list of adjacent cell radio resource state and adjacent cell list information, determines the target handover cell that an applicable MS switches.Detailed process is as follows:
Step 31, when MS needs to be switched to adjacent cell, for this MS provides the service Femto base station of the community of service to obtain the list of adjacent cell radio resource state;
Detailed process is discussed in detail in above-described embodiment one step 21, no longer too much here repeats.
Step 32, the adjacent cell radio resource state list that service Femto base station obtains according to step 31, in conjunction with the adjacent cell list information of self maintained, determines the target handover cell that MS can be received to switch;
The adjacent cell list that service Femto base station is preserved according to self, by each ranking cells in adjacent cell list, choose the first candidate list of all candidate cells that sequence will switch as MS in the community of top N, first candidate list information comprises Cell-ID and the subdistrict position area code code (LAC of community, LocationAreaController), the first candidate list as shown in table 1:
Table 1
| Community sequence number | Community Cell-ID | Community LAC |
| Community 1 | Cell-ID 13 | LAC 13 |
| Community 2 | Cell-ID 11 | LAC 11 |
| …… | …… | …… |
| Community N | Cell-ID NN | LAC NN |
Based on the Cell-ID and No. LAC of the first candidate list Zhong Ge community, with the adjacent cell radio resource state list obtained in step 51, determine the Radio Resource service condition of each candidate cell in candidate list, determine a target handover cell that MS can be received to cut.Detailed process is, the adjacent cell wireless state information table that Femto base station as shown in table 2 builds according to the adjacent cell radio resource state message bag received:
Table 2
Wherein Radio Resource using state in table 2, " 0 " represents that the Radio Resource using state of this community is optimum, and " 1 " represents suboptimum, the like.
According to the candidate list information obtained, first the community ID and No. LAC made number one in candidate list is chosen, ID and LAC according to this community inquires about Radio Resource service condition corresponding to this community in the list of adjacent cell radio resource state, if the current radio resource using state support MS incision that the community made number one is corresponding, Ze Jianggai community is just defined as the target handover cell of MS, otherwise, if current radio resource state corresponding to this community does not support that MS cuts, then choose in candidate list and sort at deputy community ID and No. LAC, perform above-mentioned deterministic process by that analogy, till finding the target handover cell supporting MS incision.Such as, all candidate cells in table 1, community 1 is make number one in candidate list, the Radio Resource using state of community 1 is inquired about in the adjacent cell radio resource state list built in service Femto base station according to the ID (Cell-ID13) of community 1 and No. LAC (LAC13), the Radio Resource using state of this community is 3 in adjacent cell radio resource state identified in list, the current Radio Resource using state in Ze Gai community 1 may not support that MS cuts, then choose ID (Cell-ID11) and No. LAC (LAC11) that candidate cell comes the community 2 of the 2nd, the radio resource state inquiring about community 2 in the list of adjacent cell radio resource state is 0, namely the current radio resource state of community 2 is excellent, can support that MS accesses, community 2 is confirmed as target handover cell.
Embodiment three
The present embodiment is on the basis of above-described embodiment two, further, all communities that cell radio resource state can receive MS to cut are determined according to adjacent cell radio resource state information, in conjunction with the adjacent cell list information of service Femto base station self maintained, are sorted in all communities that MS can be received to cut determined, thus determine the second candidate list that applicable MS switches, choose community that the second candidate list makes number one as target handover cell.Detailed process is as follows:
Step 41, when MS needs to be switched to adjacent cell, for this MS provides the service Femto base station of the community of service to obtain the list of adjacent cell radio resource state;
Detailed process is discussed in detail in above-described embodiment one step 21, no longer too much here repeats.
Step 42, the adjacent cell radio resource state list that service Femto base station obtains according to step 41, in conjunction with the adjacent cell list information of self maintained, determines the target handover cell that MS can be received to switch;
Service Femto base station is according to the adjacent cell radio resource state list obtained, is sorted according to Radio Resource service condition in each community, rank the first by the less community that MS can be received to cut of Radio Resource load, represent with " 0 ", the like, choose sequence in the community of top N as all candidate cells that MS will switch, all communities that the cell radio resource state determined according to the list of adjacent cell radio resource state can receive MS to access, the ordering rule that those communities selected are preset according to neighbour is sorted, the adjacent cell made number one is selected in ranking results adjacent cell from front to back, as the target handover cell that described MS can be received to cut.
Such as, in adjacent cell radio resource state list in above-described embodiment two (table 2), choose the community that 3 radio resource state can receive MS to access, the CELLID and No. LAC of 3 communities is respectively (CELLID11, LAC1), CELLID12, and (CELLID13 LAC12), LAC13), according to the CELLID and No. LAC of 3 communities chosen, are sorted according to the ordering rule preset in these three communities, choose the community of (CELLID13, the LAC13) correspondence made number one as the target handover cell that MS can be received to cut.
The above-mentioned cell merge determination methods based on Femto framework, for MS provides the service Femto base station of current service can according to the adjacent cell list of self maintained and the adjacent cell radio resource state list built based on the Radio Resource service condition of each community received, thus directly determine MS target handover cell, avoid MS in prior art and be cut into high load capacity community and the situation causing handoff failure, service Femto base station may need to carry out trial respectively for different target handover cell and switch, thus add handover delay, reduce switching efficiency, and then had influence on the problem of communication quality of MS.
As shown in Figure 5, be the service Femto base station hand-off execution process flow chart of embodiment of the present invention proposition.
Step 51, when the current service Femto base station of MS performs and switches, according to the target handover cell information that said process obtains, sends handover request to GW node.
Step 52, after GW node receives request message, sends switching command to the Femto base station belonging to target handover cell.
Step 53, after the Femto base station belonging to target handover cell receives switching command, carries out cell merge process with the base stations united execution of service Femto to MS.
Accordingly, as shown in Figure 6, be a kind of Femto base station that the embodiment of the present invention proposes, comprise:
Radio resource state interactive unit 801, for receiving the cell radio resource state information of each adjacent cell of community, place, described Femto base station; And the cell radio resource state information of the community of described Femto base station coverage is sent to each adjacent cell of community, place, described Femto base station.
Preferably, described radio resource state interactive unit 801, specifically for the cell radio resource service condition of the community that the signal of this adjacent Femto Base Transmitter receiving this adjacent Femto base station transmission of community, place, described Femto base station covers, as the cell radio resource state information of the adjacent cell of this adjacent Femto base station coverage of this neighbour obtained.
More preferably, the Radio Resource service condition that the community that covers specifically for this adjacent Femto base station transmit signals receiving this adjacent Femto base station and periodically send of described radio resource state interactive unit 801 is current; Or specifically for receiving adjacent Femto base station when judging the current usable radio resources in community that this adjacent Femto base station transmit signals covers lower than setting threshold, the Radio Resource service condition that the community that this adjacent Femto base station transmit signals of transmission covers is current.
Memory cell 802, for storing the cell list information of each adjacent cell of community, place, described Femto base station, and the cell radio resource state information of each adjacent cell of radio resource state interactive unit 801 reception;
Determining unit 803, for when determining that mobile station MS that described Femto base station transmit signals covers has cell merge demand, according to the adjacent cell list information that described memory cell 802 stores, and the cell radio resource state information of each adjacent cell, determine a target handover cell that described MS can be received to cut;
Preferably, described determining unit 803 specifically comprises two kinds of forms, and as shown in Figure 7, described determining unit 803 specifically comprises sequence subelement, sorts for each adjacent cell in the adjacent cell list information that described memory cell 802 stored; Chooser unit, for the cell radio resource state information of each adjacent cell according to described cell stores, check whether the cell radio resource state information of the ranking results adjacent cell from front to back after the sequence of sequence subelement can receive described MS to cut, till choosing an adjacent cell successively; Determine subelement, for by chooser Unit selection to adjacent cell be defined as target handover cell that described MS can be received to cut.
Another kind of form as shown in Figure 8, described determining unit 803 specifically comprises: adjacent cell determination subelement, for the cell radio resource state information of each adjacent cell according to described cell stores, in the adjacent cell list information that described memory cell 802 stores, determine the adjacent cell that described MS can be received to cut; Target handover cell chooser unit, for selecting a target handover cell that described MS can be received to cut in the adjacent cell determined at adjacent cell determination subelement.
More preferably, target handover cell chooser unit, sorts specifically for the adjacent cell determined by adjacent cell determination subelement; The adjacent cell made number one is selected, as the target handover cell that described MS can be received to cut in result after adjacent cell sequence adjacent cell from front to back.
Switch unit 804, for being switched to described MS in target handover cell that determining unit 803 determines.
Correspondingly, the embodiment of the present invention also proposes a kind of mobile communication system based on Femto framework, specifically as shown in Figure 1 above, the wherein implementation procedure of the changing method of the specific works principle of at least one Femto base station proposition as above-mentioned in the embodiment of the present invention, namely there is at least one Femto base station is the Femto base station shown in the above-mentioned Fig. 8 of the embodiment of the present invention.
Obviously, those skilled in the art can carry out various change and modification to the present invention and not depart from the spirit and scope of the present invention.Like this, if these amendments of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification.
Claims (9)
1. based on a cell switching method for Femto framework, it is characterized in that, comprising:
The service Femto base station at the current place of mobile station MS is when determining that described MS has cell merge demand, according to the adjacent cell list information of self maintained, and the cell radio resource state information of each adjacent cell obtained in advance, determine a target handover cell that described MS can be received to cut; And
Described MS is switched in the target handover cell determined;
Wherein, described service Femto base station obtains the cell radio resource state information of each adjacent cell, comprising:
For each adjacent Femto base station, the Radio Resource service condition that the community that the signal that described service Femto base station receives this adjacent Femto Base Transmitter that this adjacent Femto base station sends covers is current, as the cell radio resource state information of the adjacent cell of this adjacent Femto base station coverage obtained;
Wherein, according to the adjacent cell list information of self maintained, and the cell radio resource state information of each adjacent cell obtained in advance, determine a target handover cell that described MS can be received to cut, comprising:
Each adjacent cell in the adjacent cell list information of self maintained is sorted;
According to the cell radio resource state information of each adjacent cell obtained in advance, check whether the cell radio resource state information of ranking results adjacent cell from front to back can receive described MS to cut, till choosing an adjacent cell successively;
The adjacent cell chosen is defined as the target handover cell that described MS can be received to cut.
2. as claimed in claim 1 based on the cell switching method of Femto framework, it is characterized in that, the Radio Resource service condition that the community that the signal that described service Femto base station receives this adjacent Femto Base Transmitter that this adjacent Femto base station sends covers is current, comprising:
The Radio Resource service condition that the community that this adjacent Femto base station transmit signals that described service Femto base station receives this adjacent Femto base station periodicity transmission covers is current; Or
Described service Femto base station receives this adjacent Femto base station when judging the current usable radio resources in community that this adjacent Femto base station transmit signals covers lower than setting threshold, the Radio Resource service condition that the community that this adjacent Femto base station transmit signals of transmission covers is current.
3. as claimed in claim 1 based on the cell switching method of Femto framework, it is characterized in that, according to the adjacent cell list information of self maintained, and the cell radio resource state information of each adjacent cell obtained in advance, determine a target handover cell that described MS can be received to cut, comprising:
According to the cell radio resource state information of each adjacent cell obtained in advance, in the adjacent cell list information of self maintained, determine the adjacent cell that described MS can be received to cut;
A target handover cell that described MS can be received to cut is selected in the adjacent cell determined.
4. as claimed in claim 3 based on the cell switching method of Femto framework, it is characterized in that, in the adjacent cell determined, select a target handover cell that described MS can be received to cut, comprising:
The adjacent cell determined is sorted;
The adjacent cell made number one is selected, as the target handover cell that described MS can be received to cut in ranking results adjacent cell from front to back.
5. a Femto base station, is characterized in that, comprising:
Radio resource state interactive unit, for receiving the cell radio resource state information of each adjacent cell of community, place, described Femto base station; And the cell radio resource state information of the community of described Femto base station coverage is sent to each adjacent cell of community, place, described Femto base station;
Memory cell, for storing the cell list information of each adjacent cell of community, place, described Femto base station, and the cell radio resource state information of each adjacent cell of radio resource state interactive unit reception;
Determining unit, for when determining that mobile station MS that described Femto base station transmit signals covers has cell merge demand, according to the adjacent cell list information of described cell stores, and the cell radio resource state information of each adjacent cell, determine a target handover cell that described MS can be received to cut;
Switch unit, for being switched in target handover cell that determining unit determines by described MS;
Wherein, described radio resource state interactive unit, specifically for:
The cell radio resource service condition of the community that the signal receiving this adjacent Femto Base Transmitter of the adjacent Femto base station transmission of community, place, described Femto base station covers, as the cell radio resource state information of the adjacent cell of this adjacent Femto base station coverage obtained;
Described determining unit specifically comprises:
Sequence subelement, for sorting each adjacent cell in the adjacent cell list information of described cell stores;
Chooser unit, for the cell radio resource state information of each adjacent cell according to described cell stores, check whether the cell radio resource state information of the adjacent cell of the ranking results after the sequence of sequence subelement can receive described MS to cut, till choosing an adjacent cell from front to back successively;
Determine subelement, for by chooser Unit selection to adjacent cell be defined as target handover cell that described MS can be received to cut.
6. Femto base station as claimed in claim 5, is characterized in that, described radio resource state interactive unit, the Radio Resource service condition that the community that this adjacent Femto base station transmit signals periodically sent specifically for receiving this adjacent Femto base station covers is current; Or specifically for receiving adjacent Femto base station when judging the current usable radio resources in community that this adjacent Femto base station transmit signals covers lower than setting threshold, the Radio Resource service condition that the community that this adjacent Femto base station transmit signals of transmission covers is current.
7. Femto base station as claimed in claim 5, it is characterized in that, described determining unit specifically comprises:
Adjacent cell determination subelement, for the cell radio resource state information of each adjacent cell according to described cell stores, in the adjacent cell list information of described cell stores, determines the adjacent cell that described MS can be received to cut;
Target handover cell chooser unit, for selecting a target handover cell that described MS can be received to cut in the adjacent cell determined at adjacent cell determination subelement.
8. Femto base station as claimed in claim 7, is characterized in that target handover cell chooser unit sorts specifically for the adjacent cell determined by adjacent cell determination subelement; The adjacent cell made number one is selected, as the target handover cell that described MS can be received to cut in result after adjacent cell sequence adjacent cell from front to back.
9. the mobile communication system based on Femto framework, it is characterized in that, comprise at least one Femto base station, each Femto base station is used for when determining that the mobile station MS of self administering has cell merge demand, according to the adjacent cell list information of self maintained, and the cell radio resource state information of each adjacent cell obtained in advance, determine a target handover cell that described MS can be received to cut; And described MS is switched in the target handover cell determined; The Radio Resource service condition that the community that this adjacent Femto base station transmit signals that each Femto base station receives the periodicity transmission of adjacent Femto base station covers is current; Or specifically for receiving adjacent Femto base station when judging the current usable radio resources in community that this adjacent Femto base station transmit signals covers lower than setting threshold, the Radio Resource service condition that the community that this adjacent Femto base station transmit signals of transmission covers is current;
Wherein, according to the adjacent cell list information of self maintained, and the cell radio resource state information of each adjacent cell obtained in advance, determine a target handover cell that described MS can be received to cut, comprising:
Each adjacent cell in the adjacent cell list information of self maintained is sorted;
According to the cell radio resource state information of each adjacent cell obtained in advance, check whether the cell radio resource state information of ranking results adjacent cell from front to back can receive described MS to cut, till choosing an adjacent cell successively;
The adjacent cell chosen is defined as the target handover cell that described MS can be received to cut.
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| CN1744753A (en) * | 2004-09-02 | 2006-03-08 | 大唐移动通信设备有限公司 | Selecting method of switching target community in TDD/CDMA system |
| CN101784087A (en) * | 2009-01-16 | 2010-07-21 | 华为技术有限公司 | Method, device and system for reporting measurement report |
| CN102014428A (en) * | 2010-12-02 | 2011-04-13 | 新邮通信设备有限公司 | Method and device for selecting cells to be switched at switching preparatory stage |
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| JP5011572B2 (en) * | 2008-04-30 | 2012-08-29 | Ｎｅｃインフロンティア株式会社 | Wireless mobile terminal and connection destination switching method |
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| CN1744753A (en) * | 2004-09-02 | 2006-03-08 | 大唐移动通信设备有限公司 | Selecting method of switching target community in TDD/CDMA system |
| CN101784087A (en) * | 2009-01-16 | 2010-07-21 | 华为技术有限公司 | Method, device and system for reporting measurement report |
| CN102014428A (en) * | 2010-12-02 | 2011-04-13 | 新邮通信设备有限公司 | Method and device for selecting cells to be switched at switching preparatory stage |
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