CN101938771B - Method, system and equipment for determining base station controller in terminal switching process - Google Patents
Method, system and equipment for determining base station controller in terminal switching process Download PDFInfo
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Abstract
The invention discloses a method, a system and equipment for determining a base station controller (BSC) in the terminal switching process. When the BSC is selected for UE switching, a voice coding mode supported by the BSC to be selected and voice coding modes allocated for the UE by RNC are comprehensively considered, so that the selected BSC supports at least one voice coding mode allocated for the UE by the RNC; therefore, in the uplink direction, the UE only needs coding the voice data in the RNC-allocated voice coding mode and does not need converting the coding mode after switching into the coding mode under 2G, and in the downlink direction, when the RNC sends the coded voice data to the BSC through an Iur-g interface, the BSC does not need coding conversion, and problems of high BSC implementation difficulty and reduction of voice quality caused by decoding the voice data sent by the terminal through the TC function of the BSC are avoided.
Description
Technical field
The present invention relates to the communications field, relate in particular to a kind of method, system and equipment of in terminal switching process, confirming base station controller.
Background technology
In order in 2G and 3G interoperability process, to improve the terminal success rate for switching; In standard, introduced radio network controller (Radio Network Controller; RNC) with base station controller (Base StationController, the Iur-g interface between BSC).At present, to having proposed four kinds of integration programs in the network element fusion research, the Iur-g interface principle that uses in each integration program is following:
Standard I ur-g interface: the Iur-g interface transfer charge information of utilizing standard definition.
Standard I ur-g interface strengthens: the Iur-g interface control plane agreement to standard is made amendment; RNC can directly notify BSC to accomplish switching arranged resources through the message that increases; Make core net flow process and mobile phone air interface access process executed in parallel, reduce handover delay.
Novelty Iur-g interface: the switching flow between drawing-in system, handle user plane data transfer between RNC and BSC, require core net certain customers surface function to move down simultaneously to RNC.
Unified A/Iu interface: realize that the degree of depth between network element merges.
In the switching flow of terminal, RNC transmits information through the Iur-g interface to BSC, is example with novelty Iur-g interface below, and existing terminal switching flow is described, as shown in Figure 1, its flow process mainly may further comprise the steps:
The first step: UE carries the signal quality (RSSI) of each sub-district of UE measurement to RNC reporting terminal measurement report message MEASUREMENT REPORT in the said terminal survey report message.
Second step: the RNC sends handoff request message ENHANCEDRELOCATION REQUEST through the Iur-g interface to BSC; Wherein carry current business information of UE sign, UE and UE ability etc. and characterize the information of UE state, also carry the RSSI of each sub-district that Target cell tabulation and UE measure simultaneously.
The 3rd step: the business demand that BSC is current according to UE, in the Target cell tabulation, select a proper cell, and, also set up Abis interface simultaneously and be connected with the transmission of Iur-g interface for UE allocation of channel resources may and the carrying of setting up the Iur-g interface.After the switching that is UE is ready, reply handover request ack message ENHANCED RELOCATION RESPONSE to RNC.
After this, RNC sends switching command HANDOVER FROM UTRANCOMMAND through eating dishes without rice or wine to UE, requires UE to begin to switch to BSC.After UE receives the order of RNC, send switching to BSC and insert message HANDOVER ACCESS, the beginning channel switches; When BSC detects the UE channel and inserts, send to RNC and to switch probe message ENHANCED RELOCATION DETECT, after RNC receives this message, the converting users face be connected to BSC.After UE switches completion; UE sends handoff completion message HANDOVER COMPLETE to BSC; After RNC replied switching detection completion message ENHANCED RELOCATION COMPLETE, RNC discharged related resource to BSC with handoff completion message, and this moment, the handoff procedure of UE finished.
The speech business of UE does not stop in handoff procedure, but continues to carry out, and then UE need be sent to BSC through the Iur-g interface by RNC according to RNC for the voice coding modes of its distribution is sent to RNC after to encoded speech data.But because RNC is that the BSC that UE selects can be optional, therefore, the coded system that UE uses possibly be that the BSC in the handoff procedure can't support, causes BSC can't correctly decode to the speech data that receives.For example: what RNC was that UE distributes is the special sound coded system in the 3G network, and then UE selects for use wherein a kind of special sound coded system of distribution that speech data is encoded.And BSC supports is the coded system in the 2G network, so can't decode to the speech data that RNC transmits through the Iur-g interface.
In order to address the above problem, existing scheme has proposed increase sound code converter in BSC, and (TransCoder, the TC) scheme of function require BSC to utilize the TC function to accomplish the conversion of coding, and then the speech data of correctly decoding.But, in BSC, increase the realization difficulty that the TC function can strengthen BSC, and, through reducing voice quality after the conversion of TC function, influence audibility.
Summary of the invention
The embodiment of the invention provides a kind of method, system and equipment of in terminal switching process, confirming base station controller, to solve in terminal switching process the unmatched problem of the voice coding modes of supporting between terminal and the BSC.
A kind of method of in terminal switching process, confirming BSC, said method comprises:
Radio network controller (RNC) receives the terminal survey report message that UE reports;
RNC therefrom selects the handoff procedure that a BSC is used for UE according to the voice coding modes that each BSC to be selected supports, the said BSC that selects supports that at least one RNC is the voice coding modes that UE distributes.
A kind of radio network controller, said radio network controller comprises:
Information receiving module is used to receive the terminal survey report message that UE reports;
First selects module, is used for the voice coding modes according to each BSC support to be selected, therefrom selects the handoff procedure that a BSC is used for UE, and the said BSC that selects supports that at least one RNC is the voice coding modes that UE distributes.
A kind of system that in terminal switching process, confirms BSC, said system comprises:
UE is used for the reporting terminal measurement report message;
A plurality of BSC, wherein each BSC is used to report the public-measurement report message, carries the voice coding modes of self supporting in the said public-measurement report message;
RNC is used for after receiving said terminal survey report message, according to the voice coding modes that each BSC supports, therefrom selects the handoff procedure that a BSC is used for UE, and the said BSC that selects supports that at least one RNC is the voice coding modes that UE distributes.
Because the embodiment of the invention is when switching selection BSC for UE; Having taken all factors into consideration voice coding modes that BSC to be selected supported and RNC is the voice coding modes that UE distributes; Make the BSC that finally selects support that at least one RNC is the voice coding modes that UE distributes; Therefore; The voice coding modes that only need distribute according to RNC at up direction UE is to encoded speech data, and need be in the coded system that after the switching coded system is transformed into 2G under, when the while, the speech data after down direction RNC will encode through the Iur-g interface was sent to BSC; The conversion that BSC need not encode, the speech data of having avoided BSC to use the TC function that the terminal the sent BSC that brings that decodes realizes the problem that difficulty strengthens, voice quality is reduced.
Description of drawings
Fig. 1 is a switching flow sketch map in terminal in the background technology;
Fig. 2 is a method step schematic flow sheet of confirming base station controller in the embodiment of the invention one;
Fig. 3 (a) and Fig. 3 (b) are radio network controller structural representation in the embodiment of the invention five;
Fig. 4 is a system configuration sketch map of in terminal switching process, confirming BSC in the embodiment of the invention six.
Embodiment
In order to realize the object of the invention; The embodiment of the invention proposes a kind of method of in the UE handoff procedure, confirming base station controller; Require RNC when the BSC that selects for UE to switch; The preferential voice coding modes set of selecting to support and RNC are the base station controller that voice coding modes set that UE distributes has common factor, so that the speech data of RNC after with the UE coding is when sending to base station controller, because base station controller can be supported the voice coding modes that UE uses; Therefore, base station controller can correctly be decoded to speech data under the situation of not using the TC function.
Below in conjunction with Figure of description various embodiments of the present invention are elaborated.
Embodiment one:
The embodiment of the invention one has proposed a kind of method that can be applied in the definite base station controller in the process that UE switches on the basis of the voice coding modes of taking all factors into consideration the actual support of BSC, as shown in Figure 2, said method comprising the steps of:
Step 101:RNC receives the public-measurement report message that each BSC to be selected reports, and carries the voice coding modes that BSC to be selected supports in the said public-measurement report message.
In this step; BSC to be selected can periodically report the voice coding modes of self supporting to RNC; Also can be when RNC confirms to select BSC for to be switched UE; Send a request message to each BSC to be selected, each BSC reports the voice coding modes of self supporting again when receiving the request message of RNC.
Present embodiment also is not limited to RNC and obtains the voice coding modes that BSC to be selected supports through other modes, manually is recorded among the RNC like the voice coding modes of in advance BSC to be selected being supported.
The voice coding modes that relates in the various embodiments of the present invention can be the voice coding modes in the 2G network; Also can be the voice coding modes in the 3G network, for example: GSM full-rate codes mode, GSM half rate encoded mode, GSM enhanced full rate speed encoding mode, GSM full rate AMR coded system or GSM half rate AMR coded system.
RNC is that the voice coding modes of UE distribution can be one or more in the above-mentioned coded system, and the voice coding modes that BSC supports also can be one or more in the above-mentioned coded system.
Step 102:RNC receives the terminal survey report message MEASUREMENTREPORT that UE reports.
Carried the signal quality (RSSI) of each sub-district of UE measurement in the said terminal survey report message.
RNC confirms that the current needs of UE switch after receiving the terminal survey report message that UE reports.
Step 103:RNC selects at least one BSC to be selected as available BSC according to the voice coding modes that each BSC to be selected that receives in advance supports.
Select the condition of available BSC to be in this step:
Said available BSC supports that at least one RNC is the voice coding modes that UE distributes, and that is to say, voice coding modes set and the RNC that available BSC supports is that the voice coding modes set that UE distributes has common factor.
For make voice coding modes that available BSC supports with for the voice coding modes matching degree of UE distribution high as far as possible; Can further limit above-mentioned alternative condition; The voice coding modes set that requires available BSC to support not only will have common factor with the voice coding modes set that distributes for UE, and the number of the voice coding modes in also will seeking common ground simultaneously is greater than setting numerical value.Concrete selection mode is:
At first, RNC will compare with the voice coding modes that each BSC to be selected supports respectively for the voice coding modes that UE distributes, and confirms in the voice coding modes that distributes for UE the voice coding modes number that each BSC to be selected supports; Then, RNC with the number of confirming greater than the BSC to be selected that sets numerical value as available BSC.
If find not exist among the BSC to be selected the BSC to be selected that satisfies above-mentioned condition, then can carry out traditional handoff procedure according to BSC to be selected of existing Scheme Choice.
Step 104:RNC selects the handoff procedure that a BSC is used for UE from available BSC.
The purpose of step 103 and step 104 is to select one to be the BSC that the voice coding modes of UE distribution has common factor with RNC, and therefore, present embodiment also is not limited to other selection modes, for example, does not divide available BSC, directly from BSC to be selected, selects.
This step can be the RNC BSC that optional BSC conduct is picked out from available BSC; Perhaps RNC picks out the maximum available BSC of voice coding modes number in the common factor from available BSC.
Because each the available BSC that in step 103, selects has following characteristics: in the voice coding modes that available BSC supports; What have at least that a voice coding modes is that optional BSC supports is again that RNC is that UE distributes, and has guaranteed to a certain extent that then the speech data behind the UE coding can correctly be decoded by available BSC.Therefore, during BSC after an available BSC switched as UE, the conversion that this BSC need not use the TC function to accomplish coding just can correctly be decoded to the speech data after UE is encoded, and realize the object of the invention.
Because BSC to be selected not necessarily reports the public-measurement report message to RNC in real time; Report between the public-measurement report message at twice; The ability of BSC to be selected may change, therefore, and after RNC has picked out the BSC that switches as UE; Can also carry out once more just further carrying out following steps alternately to the voice coding modes of supporting with the available BSC that picks out:
Step 105:RNC sends handoff request message ENHANCED RELOCATION REQUEST through the Iur-g interface to the available BSC that picks out, and wherein carries the voice coding modes that distributes into UE.
Step 106: the available BSC that picks out returns handover request ack message ENHANCED RELOCATION RESPONSE through the Iur-g interface to RNC; Wherein carrying the voice coding modes set of self supporting is the voice coding modes intersection of sets collection that UE distributes with RNC, just the voice coding modes in the voice coding modes for the UE distribution, supported of BSC.
Distinguishingly; If the variation that the ability of available BSC takes place; RNC is that arbitrary voice coding modes that UE distributes all can not be supported, the available BSC that then picks out will carry the information of coupling failure in handover request ack message, and notice RNC reselects the handoff procedure that an available BSC is used for UE.
If the available BSC that selects in the step 103 does not also all determine whether can be used in the handoff procedure of UE; And also do not surpass maximum (the maximum here can be set according to the needs of Operation and Maintenance configuration) through the number of times that the Iur-g interface attempts switching; Then RNC jumps to step 104, repeated execution of steps 104～step 106.If the available BSC that selects in the step 103 all confirms to be used for the handoff procedure of UE, the number of times of perhaps attempting switching through the Iur-g interface reaches maximum, then carries out the UE handoff procedure according to existing scheme.
RNC and BSC are through the negotiations process of step 105 and step 106; Confirm that available BSC that RNC selects can be used in the handoff procedure of UE; At this moment, occuring simultaneously if the voice coding modes that the available BSC that selects supports exists with the voice coding modes that distributes for UE, is the voice coding modes set that UE distributes but occur simultaneously less than RNC; That is to say; The available BSC that picks out can not support RNC be UE distribute whole voice coding modes the time, RNC also need notify upper layer network equipment and UE: banning use of RNC is in the voice coding modes that distributes of UE, the voice coding modes that the available BSC that picks out can not support.Concrete notification procedure is following:
Step 107:RNC is to core net (core network; CN) transmission rate control messages; The voice coding modes that indication CN uses the available BSC that picks out in the voice coding modes as the UE distribution, to be supported is encoded to speech data; And; RNC sends the transformat combination control messages to UE, and (Transport Format Combination Control, TFCC), the voice coding modes that indication UE uses the available BSC that picks out in the voice coding modes as the UE distribution, to be supported is encoded to speech data.
Here the speech data of CN coding is identical with the speech data of UE coding.
Through in this step, even the speech data behind the UE coding still can correctly be decoded by BSC after switching completion.
In step 107, RNC need confirm whether the BSC that picks out can support that RNC is whole voice coding modes that UE distributes, so that judge whether the voice coding modes that needs notice CN and UE ban use of.Particularly, confirm whether the BSC that picks out can support that RNC is that whole voice coding modes that UE distributes can have following dual mode:
First kind of voice coding modes that mode: RNC supports according to the BSC that picks out; And the voice coding modes that distributes for UE; The voice coding modes number that the available BSC that confirms to pick out is supported in the voice coding modes that distributes for UE; Number of confirming and the voice coding modes number of distributing for UE are compared, confirm whether the BSC that picks out can support that RNC is whole voice coding modes that UE distributes.
The second way: at first, RNC carries the voice coding modes that distributes into UE in the handoff request message of sending to the available BSC that picks out; Then, the said available BSC that picks out is carrying the voice coding modes of being supported from the voice coding modes that distributes for UE in the handover request ack message of returning to RNC; At last; The number of the voice coding modes that the available BSC that RNC will pick out is supported in the voice coding modes that distributes for UE compares with the voice coding modes number of distributing for UE, confirms whether the BSC that picks out can support that RNC is whole voice coding modes that UE distributes.
Because RNC has known the voice coding modes of the BSC support of picking out in advance, then can confirm directly whether it can support the whole voice coding modes that distribute into UE through first kind of mode; Further, because variation possibly take place the ability of the available BSC that picks out,, can confirm whether the BSC that picks out can support the whole voice coding modes that distribute into UE through the second way in order to improve the accuracy of voice coding modes coupling.
Scheme through above embodiment one; The available BSC that RNC is picked out supports the voice coding modes into the UE distribution as much as possible; Therefore, BSC need not carry out the insertion of TC after receiving the speech data of RNC through the transmission of Iur-g interface; Can utilize the voice coding modes of support to confirm the decoding process of speech data, and then speech data is successfully decoded.Owing in decode procedure, need not realize the TC function, therefore reduced the complexity of BSC, improved the quality of decoding back speech data simultaneously.
Embodiment two:
The embodiment of the invention two is on the basis of embodiment one; Further with the loading condition of BSC to be selected as the condition of selecting available BSC; Make the available BSC that selects to support the voice coding modes that UE uses; Confirm also that simultaneously available BSC has enough data-handling capacities, the business of switching back UE is not interrupted, improve the reliability that UE switches.
The implementation method of the embodiment of the invention two is following:
The first step: RNC receives the public-measurement report message that each BSC to be selected reports, and carries the voice coding modes of BSC support to be selected and the surplus yield of BSC to be selected in the said public-measurement report message.
In present embodiment two, voice coding modes that BSC to be selected supports and the surplus yield of BSC to be selected can report simultaneously, also can report respectively.
The surplus yield that BSC to be selected reports can have following several kinds of forms:
First kind of form: BSC to be selected is to RNC reporting real-time load (RT load) and non real-time load (NRTload), and whole stock numbers of BSC to be selected, and RNC just can give the surplus yield of confirming BSC to be selected according to the load among the BSC to be selected and whole stock numbers.
Second kind of form: BSC to be selected directly reports surplus yield to RNC.
Second step: RNC confirms available BSC according to the mode of step 102 and step 103 among the embodiment one.
The 3rd step: RNC further filters out surplus yield greater than the available BSC that sets stock number from available BSC.
Particularly, RNC can sort available BSC according to the descending order of surplus yield, filters out surplus yield wherein greater than the available BSC that sets stock number, and removes remaining available BSC.
The 4th step: RNC goes on foot the available BSC that filters out from the 3rd and selects the handoff procedure that a BSC is used for UE.
Present embodiment two considers that the absolute quantity size of surplus yield can reflect the load of optional BSC and the data-handling capacity that UE is sent to a certain extent; But because the stock number that the different coding mode that UE uses need take is different; Therefore, the shared stock number of the decoding process of the correspondence that adopts to the different coding mode of optional BSC is also different.For example: though the surplus resources of available BSC_1 is more relatively, because the bigger stock number that the voice coding modes that distributes for UE that available BSC_1 supports takies, therefore, the surplus resources of available BSC_1 possibly be not enough to support corresponding decoding process.Though and the surplus resources of available BSC_2 is less relatively; But because the less stock number that the voice coding modes that distributes for UE that available BSC_2 supports takies; Therefore, possibly also there is surplus resources more than needed in the surplus resources of available BSC_2 under the situation of supporting corresponding decoding process.So the maximum resource amount that the surplus yield that the embodiment of the invention two is taken all factors into consideration available BSC takies during decoding during with speech data that UE is sent has filtered out suitable available BSC.Concrete screening process is following:
At first, the mode according to above-mentioned the 3rd step filters out surplus yield greater than the available BSC that sets stock number.
Then, RNC confirms the voice coding modes that each available BSC is supported in the voice coding modes that distributes for UE in the available BSC that further filters out, and confirms the stock number that the coded system of every kind of support need take.
With available BSC_1 is example; Confirm that available BSC_1 voice coding modes set of supporting and the voice coding modes intersection of sets collection that distributes for UE are voice coding modes _ A, voice coding modes _ B and voice coding modes _ C; Wherein, The stock number that voice coding modes _ A need take is X, and the stock number that voice coding modes _ B need take is Y, and the stock number that voice coding modes _ C need take is Z.
Then, RNC confirms the maximum voice coding modes of stock number that needs that each available BSC is supported take in the voice coding modes that distributes for UE.
Suppose to confirm that the stock number X that voice coding modes _ A that BSC_1 supports takies is maximum.
At last, RNC confirms the surplus yield of each available BSC and the merchant that this BSC takies the shared stock number of the maximum voice coding modes of stock number.
What suppose that BSC_1 receives is according to the speech data behind voice coding modes _ A coding; Then with the surplus yield of BSC_1 divided by the stock number that voice coding modes _ A takies, the merchant who obtains can represent that BSC_1 is to carrying out ability of processing according to the speech data behind voice coding modes _ A coding.The merchant who obtains is big more, and expression BSC_1 is strong more to carry out ability of processing according to the speech data behind voice coding modes _ A coding.
Then in above-mentioned the 4th step, RNC can select the handoff procedure that a BSC is used for UE from the merchant's that obtains the available BSC of numerical value greater than threshold value, and the threshold value here is at least 1.
Embodiment three:
The embodiment of the invention three is on the basis of embodiment one or embodiment two; Further with the signal quality state of BSC respective cell to be selected as the condition of selecting available BSC; Make the available BSC that selects to support the voice coding modes that UE uses, also because the signal quality of respective cell is better, reduce the data transmission procedure packet loss simultaneously; Improve the ability of transfer of data to a certain extent, improve the reliability that UE switches.
The implementation method of the embodiment of the invention three is following:
The first step: RNC receives the public-measurement report message that each BSC to be selected reports, and carries the voice coding modes that BSC to be selected supports in the said public-measurement report message.
Second step: the RNC receives the terminal survey report message that UE reports, and has wherein carried the signal quality (RSSI) of each sub-district of UE measurement.
The 3rd step: RNC selects at least one BSC to be selected as available BSC according to the voice coding modes that each BSC to be selected that receives in advance supports.
In this step, can select surplus yield and carry out subsequent operation further according to the condition of embodiment two greater than the available BSC that sets stock number.
The 4th step: RNC confirms each available BSC respective cell, and the signal quality parameter value of respective cell.
The 5th step: RNC further filters out the available BSC of the signal quality parameter value of respective cell greater than the setup parameter value from available BSC.
In this step, can be during all greater than the setup parameter value in the signal quality parameter value of all corresponding sub-districts of BSC, just think and satisfy the 5th condition in going on foot; Also can during greater than the setup parameter value, think and satisfy the condition in the 5th step in the signal quality parameter value of the part sub-district of correspondence; Can also be to the signal quality parameter value weighting of each sub-district of correspondence,, think and satisfy the condition in the 5th step during in the weighted value that obtains greater than the setup parameter value.
The 6th step: RNC selects the handoff procedure that a BSC is used for UE from the available BSC that further filters out.
Embodiment four:
The embodiment of the invention four can combine embodiment one, two and three scheme to select suitable BSC, and the scheme of the embodiment of the invention four is described below by way of example.
Supposing that candidate BSC has 5, is respectively BSC_1, BSC_2 and BSC_3, and wherein: the voice coding modes that BSC_1 supports is: voice coding modes A, voice coding modes B and voice coding modes C; The voice coding modes that BSC_2 supports is: voice coding modes B, voice coding modes C and voice coding modes D; The voice coding modes that BSC_3 supports is: voice coding modes C, voice coding modes D and voice coding modes E.RNC is that the voice coding modes that UE distributes is: voice coding modes A, voice coding modes B and voice coding modes D.
The scheme of present embodiment four is following:
The first step: RNC receives the public-measurement report message that BSC_1, BSC_2 and BSC_3 report, and carries the voice coding modes and the surplus yield of each self-supporting in the said public-measurement report message.
Second step: the RNC receives the terminal survey report message that UE reports, and has wherein carried the signal quality (RSSI) of each sub-district of UE measurement.
The 3rd step: RNC compares BSC_1 voice coding modes of supporting and the voice coding modes that distributes for UE, and definite the common factor is voice coding modes A and voice coding modes B;
RNC compares BSC_2 voice coding modes of supporting and the voice coding modes that distributes for UE, confirms that common factor is voice coding modes B and voice coding modes D;
RNC compares BSC_3 voice coding modes of supporting and the voice coding modes that distributes for UE, confirms that common factor is voice coding modes D.
In this step, require available BSC and the voice coding modes that distributes for UE that common factor is arranged, and the number of voice coding modes is not less than 2 in occuring simultaneously, and then is available as BSC_1 and BSC_2.
The 4th step: RNC carries out weighting with the surplus yield of BSC_1 and the signal quality parameter value of respective cell, obtains the weighted value of BSC_1; And, the surplus yield of BSC_2 and the signal quality parameter value of respective cell are carried out weighting, obtain the weighted value of BSC_2.
In this step, following several kinds of weighting schemes can be arranged:
First kind of weighting scheme: at first the signal quality parameter value of BSC_1 respective cell is carried out weighting, obtain the signal quality parameter value after the weighting; Then, surplus yield and the signal quality parameter value after the weighting of BSC_1 are carried out weighting once more, obtain the weighted value of BSC_1.
BSC_2 utilizes identical algorithms to obtain weighted value.
The second way: if the BSC_1 respective cell is respectively: sub-district 1, sub-district 2 and sub-district 3; Then can directly the surplus yield of BSC_1, the signal quality parameter value of sub-district 1, the signal quality parameter value of sub-district 2 and the signal quality parameter value of sub-district 3 be carried out weighting, obtain the weighted value of BSC_1.
BSC_2 utilizes identical algorithms to obtain weighted value.
The 5th step: RNC further filters out the BSC of weighted value greater than threshold value from BSC_1 and BSC_2.
Select a handoff procedure that is used for UE among the BSC that the 6th step: RNC filters out from the 5th step.
If the weighted value of BSC_1 and BSC_2 all greater than threshold value, then can be selected in the voice coding modes intersection of sets collection with for UE distribution, the BSC that the voice coding modes number is more.If BSC_1 is identical with the interior voice coding modes number of the voice coding modes intersection of sets collection that distributes for UE with BSC_2, then select the maximum handoff procedure that is used for UE of weighted value.
Suppose to select in the present embodiment four BSC_1 to be used for the handoff procedure of UE.
The 7th step: RNC sends handoff request message through the Iur-g interface to BSC_1, wherein carries the voice coding modes that distributes into UE.
The 8th step: BSC_1 returns handover request ack message to RNC, and wherein carrying the voice coding modes set of self supporting is the voice coding modes intersection of sets collection that UE distributes with RNC.
If the common factor that returns is for empty, just current BSC_1 can not support to be any voice coding modes of UE distribution that then RNC returned for the 5th step, selected BSC_2 to be used for the handoff procedure of UE; Otherwise, carried out for the 9th step.
The 9th step: RNC notice CN uses voice coding modes A and voice coding modes B that speech data is encoded, and notice UE uses voice coding modes A and voice coding modes B that speech data is encoded.
Embodiment five:
Belong under the same inventive concept with the embodiment of the invention one; The embodiment of the invention five also provides a kind of radio network controller; Shown in Fig. 3 (a) and Fig. 3 (b); Said radio network controller comprises: information receiving module 11 and first is selected module 12, and wherein: information receiving module 11 is used to receive the terminal survey report message that UE reports; First selects module 12 to be used for the voice coding modes of supporting according to each BSC to be selected, therefrom selects the handoff procedure that a BSC is used for UE, and the said BSC that selects supports that at least one RNC is the voice coding modes that UE distributes.
Said first selects module 12 to comprise first submodule 21 and second submodule 22, and wherein: first submodule 21 is used to select at least one BSC to be selected as available BSC; Second submodule 22 is used for selecting the handoff procedure that a BSC is used for UE from said available BSC.
Further; Said radio network controller also comprises indicating module 13; Be used for when whole voice coding modes that the BSC that picks out can not support to distribute into UE; To CN transmission rate control messages, the voice coding modes that indication CN uses the available BSC that picks out in the voice coding modes as the UE distribution, to be supported is encoded to speech data, and; Send TFCC to UE, the voice coding modes that indication UE uses the available BSC that picks out in the voice coding modes as the UE distribution, to be supported is encoded to speech data.
Shown in Fig. 3 (a); Corresponding with the embodiment of the invention two; Radio network controller comprises that also second selects module 14; Be used for when the public-measurement report message that receives also carries the surplus yield of BSC to be selected, from the available BSC that first submodule 21 is selected, further filter out surplus yield greater than the available BSC that sets stock number; Then second submodule 22 also is used for selecting the handoff procedure that a BSC is used for UE from the available BSC that the second selection module 14 filters out.
Corresponding with the embodiment of the invention three; Its structure is also shown in Fig. 3 (a); Radio network controller comprises that also second selects module 14; Be used for when the terminal survey report message that receives has been carried the signal quality parameter value of each sub-district that UE measures, from the available BSC that first submodule 21 is selected, further filtering out the available BSC of the signal quality parameter value of respective cell greater than the setup parameter value; Then the second chooser module 22 also is used for selecting the handoff procedure that a BSC is used for UE from the available BSC that the second selection module 14 filters out.
Shown in Fig. 3 (b); Corresponding with the embodiment of the invention four; Radio network controller comprises that also second selects module 14 and weighting block 15, and wherein: weighting block 15 is used for also carrying at the public-measurement report message surplus yield of BSC to be selected, and when carrying the signal quality parameter value of each sub-district that UE measures in the said terminal survey report message; The surplus yield of each available BSC and the signal quality parameter value of respective cell are carried out weighting, obtain the weighted value of each available BSC; Second selects module 14 to be used for further filtering out the available BSC of weighted value greater than threshold value from the available BSC that first submodule 21 is selected; Then second submodule 22 also is used for selecting the handoff procedure that a BSC is used for UE from the available BSC that the second selection module 14 filters out.
The infinite network controller that relates in the present embodiment five also is not limited to comprise other can carry out the functional module of the repertoire of RNC among the embodiment one to embodiment four.
Embodiment six:
As shown in Figure 4, the embodiment of the invention six also provides a kind of system that in terminal switching process, confirms BSC, and said system comprises UE 31, a plurality of BSC 32 and RNC 33, and wherein: UE31 is used for to RNC33 reporting terminal measurement report message; Each BSC 32 is used for reporting the public-measurement report message to RNC 33, carries the voice coding modes of self supporting in the said public-measurement report message; RNC 33 is used for after receiving said terminal survey report message, according to the voice coding modes that each BSC supports, therefrom selects the handoff procedure that a BSC is used for UE, and the said BSC that selects supports that at least one RNC is the voice coding modes that UE distributes.
The structure of the RNC 33 that relates among the embodiment six can be identical with the RNC among the embodiment five with function.
The method, system and the equipment that provide through the embodiment of the invention; Voice coding modes that selection is supported and RNC are the BSC that the high BSC of the voice coding modes matching degree of UE distribution switches as UE; The voice coding modes that has guaranteed only need distribute according to RNC at up direction UE is to encoded speech data; And need be in the coded system that after the switching coded system is transformed under the 2G; When the speech data after down direction RNC will encode through the Iur-g interface is sent to BSC simultaneously, the conversion that BSC need not use the TC function to encode; Simultaneously, consider the ability possibility real-time change of BSC to be selected, the invention allows for by the negotiation between RNC and the BSC and confirm that the final BSC that selects has the ability that the speech data behind the UE coding is decoded; After confirming BSC, RNC also notifies CN and the voice coding modes that UE uses each side to support that speech data is encoded, and makes after the UE switching that still BSC still can decode to speech data under the situation of not using the TC function.Further; The embodiment of the invention also with the signal quality parameter value of the surplus yield of BSC and BSC respective cell all as the alternative condition of the final BSC that selects; Guaranteeing the BSC speech data of can under the situation of not using the TC function, correctly decoding; Make that also data capability and the data transmission capabilities of BSC are better, improve the reliability of UE handoff procedure and data handling procedure.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, belong within the scope of claim of the present invention and equivalent technologies thereof if of the present invention these are revised with modification, then the present invention also is intended to comprise these changes and modification interior.
Claims (21)
1. method of in terminal switching process, confirming base station controller BSC is characterized in that said method comprises:
Radio network controller (RNC) receives the terminal survey report message that UE reports;
RNC therefrom selects the handoff procedure that a BSC is used for UE according to the voice coding modes that each BSC to be selected supports, the said BSC that selects supports that at least one RNC is the voice coding modes that UE distributes.
2. the method for claim 1 is characterized in that, after the measurement report message that the RNC receiving terminal reports, and selects a BSC and is used for before the handoff procedure of UE, and said method also comprises:
RNC selects at least one BSC to be selected as available BSC;
RNC selects the handoff procedure that a BSC is used for UE and comprises:
RNC selects the handoff procedure that a BSC is used for UE from said available BSC.
3. the method for claim 1 is characterized in that,
Said voice coding modes is: GSM full-rate codes mode, GSM half rate encoded mode, GSM enhanced full rate speed encoding mode, GSM full rate AMR coded system or GSM half rate AMR coded system.
4. method as claimed in claim 2 is characterized in that, RNC receives before the measurement report message that UE reports, and said method also comprises:
RNC receives the public-measurement report message that BSC to be selected reports, and carries the voice coding modes that BSC to be selected supports in the said public-measurement report message.
5. method as claimed in claim 4 is characterized in that,
RNC selects at least one BSC to be selected as available BSC, comprising:
RNC will compare with the voice coding modes that each BSC to be selected supports respectively for the voice coding modes that UE distributes, and confirms in the voice coding modes that distributes for UE the voice coding modes number that each BSC to be selected supports;
RNC with the number of confirming greater than the BSC to be selected that sets numerical value as available BSC.
6. method as claimed in claim 5 is characterized in that, RNC selects a BSC from available BSC, comprising:
The RNC BSC that optional BSC conduct is picked out from available BSC; Perhaps
RNC picks out the maximum available BSC of definite number from available BSC.
7. like the arbitrary described method of claim 2～6, it is characterized in that,
RNC selects after the available BSC, and said method also comprises:
When the BSC that picks out can not support that RNC is whole voice coding modes of UE distribution; RNC is to CN transmission rate control messages; The voice coding modes that indication core net CN uses the BSC that picks out in the voice coding modes as the UE distribution, to be supported is encoded to speech data; And RNC sends transformat combination control messages TFCC to UE, and the voice coding modes that indication UE uses the BSC that picks out in the voice coding modes as the UE distribution, to be supported is encoded to speech data.
8. method as claimed in claim 7 is characterized in that, RNC confirms according to following steps whether the BSC that picks out can support that RNC is whole voice coding modes that UE distributes:
The voice coding modes that RNC supports according to the BSC that picks out; And the voice coding modes that distributes for UE; The voice coding modes number that the BSC that confirms to pick out is supported in the voice coding modes that distributes for UE; Number of confirming and the voice coding modes number of distributing for UE are compared, confirm whether the BSC that picks out can support that RNC is whole voice coding modes that UE distributes; Perhaps
RNC carries the voice coding modes that distributes into UE in the handoff request message of sending to the BSC that picks out;
The said BSC that picks out is carrying the voice coding modes of being supported from the voice coding modes that distributes for UE in the handover request ack message of returning to RNC;
RNC compares the number of the voice coding modes that the BSC that picks out is supported in the voice coding modes that distributes for UE with the voice coding modes number of distributing for UE, confirm whether the BSC that picks out can support that RNC is whole voice coding modes that UE distributes.
9. method as claimed in claim 4 is characterized in that,
Said public-measurement report message also carries the surplus yield of BSC to be selected;
RNC selects at least one BSC to be selected as after the available BSC, and from available BSC, selects before the BSC after a BSC switches as UE, and said method also comprises:
RNC further filters out surplus yield greater than the available BSC that sets stock number from available BSC;
RNC selects the handoff procedure that a BSC is used for UE from available BSC, comprising:
RNC selects the handoff procedure that a BSC is used for UE from the available BSC that further filters out.
10. method as claimed in claim 9; It is characterized in that; RNC further filters out surplus yield greater than after the available BSC that sets stock number, and RNC selects a BSC and be used for before the handoff procedure of UE from the available BSC that further filters out, and said method also comprises:
RNC confirms the voice coding modes that each available BSC is supported in the voice coding modes that distributes for UE in the available BSC that further filters out, and confirm the stock number that the coded system of every kind of support need take;
RNC confirms the maximum voice coding modes of stock number that needs that each available BSC is supported take in the voice coding modes that distributes for UE;
RNC confirms the surplus yield of each available BSC and the merchant that this BSC takies the shared stock number of the maximum voice coding modes of stock number;
RNC selects the handoff procedure that a BSC is used for UE from the available BSC that further filters out, comprising:
Select the handoff procedure that a BSC is used for UE among the available BSC of the numerical value that RNC goes into business greater than threshold value.
11. like claim 4 or 9 or 10 described methods, it is characterized in that,
Carry the signal quality parameter value of each sub-district of UE measurement in the said terminal survey report message;
RNC selects at least one BSC to be selected as after the available BSC, and from available BSC, selects before the BSC after a BSC switches as UE, and said method also comprises:
RNC further filters out the available BSC of the signal quality parameter value of respective cell greater than the setup parameter value from available BSC;
RNC selects the handoff procedure that a BSC is used for UE from available BSC, comprising:
RNC selects the handoff procedure that a BSC is used for UE from the available BSC that further filters out.
12. method as claimed in claim 4 is characterized in that,
Said public-measurement report message also carries the surplus yield of BSC to be selected, and the signal quality parameter value of carrying each sub-district of UE measurement in the said terminal survey report message;
RNC selects at least one BSC to be selected as after the available BSC, and from available BSC, selects before the BSC after a BSC switches as UE, and said method also comprises:
RNC carries out weighting to the surplus yield of each available BSC and the signal quality parameter value of respective cell, obtains the weighted value of each available BSC;
RNC further filters out the available BSC of weighted value greater than threshold value from available BSC;
RNC selects the handoff procedure that a BSC is used for UE from available BSC, comprising:
RNC selects the handoff procedure that a BSC is used for UE from the available BSC that further filters out.
13. a radio network controller is characterized in that, said radio network controller comprises:
Information receiving module is used to receive the terminal survey report message that UE reports;
First selects module, is used for the voice coding modes according to each BSC support to be selected, therefrom selects the handoff procedure that a BSC is used for UE, and the said BSC that selects supports that at least one RNC is the voice coding modes that UE distributes.
14. radio network controller as claimed in claim 13 is characterized in that, said first selects module to comprise:
First submodule is used to select at least one BSC to be selected as available BSC;
Second submodule is used for selecting the handoff procedure that a BSC is used for UE from said available BSC.
15. radio network controller as claimed in claim 14 is characterized in that,
Said information receiving module also is used to receive the public-measurement report message that BSC to be selected reports, and carries the voice coding modes that BSC to be selected supports in the said public-measurement report message;
Said first submodule comprises:
Comparison sub-module is used for the voice coding modes that distributes for UE is compared with the voice coding modes that each BSC to be selected supports respectively, confirms in the voice coding modes that distributes for UE the voice coding modes number that each BSC to be selected supports;
Confirm submodule, be used for the number of confirming greater than the BSC to be selected that sets numerical value as available BSC.
16. radio network controller as claimed in claim 15 is characterized in that,
Said second submodule also is used for choosing the handoff procedure that a BSC is used for UE wantonly from available BSC; Perhaps from available BSC, pick out the handoff procedure that the maximum available BSC of definite number is used for UE.
17., it is characterized in that said radio network controller also comprises like the arbitrary described radio network controller of claim 14～16:
Indicating module; Be used for when whole voice coding modes that the BSC that picks out can not support to distribute into UE; To CN transmission rate control messages, the voice coding modes that indication CN uses the BSC that picks out in the voice coding modes as the UE distribution, to be supported is encoded to speech data, and; Send transformat combination control messages TFCC to UE, the voice coding modes that indication UE uses the BSC that picks out in the voice coding modes as the UE distribution, to be supported is encoded to speech data.
18. radio network controller as claimed in claim 15 is characterized in that, radio network controller also comprises:
Second selects module, is used for when the public-measurement report message that receives also carries the surplus yield of BSC to be selected, from the available BSC that first submodule is selected, further filters out surplus yield greater than the available BSC that sets stock number;
Said second submodule also is used for selecting the handoff procedure that a BSC is used for UE from the available BSC that the second selection module filters out.
19. radio network controller as claimed in claim 15 is characterized in that, radio network controller also comprises:
Second selects module; Be used for when the terminal survey report message that receives has been carried the signal quality parameter value of each sub-district that UE measures, from the available BSC that first submodule is selected, further filtering out the available BSC of the signal quality parameter value of respective cell greater than the setup parameter value;
Said second submodule also is used for selecting the handoff procedure that a BSC is used for UE from the available BSC that the second selection module filters out.
20. radio network controller as claimed in claim 15 is characterized in that, radio network controller also comprises:
Weighting block; Be used for also carrying the surplus yield of BSC to be selected at the public-measurement report message; And when carrying the signal quality parameter value of each sub-district that UE measures in the said terminal survey report message; The surplus yield of each available BSC and the signal quality parameter value of respective cell are carried out weighting, obtain the weighted value of each available BSC;
Second selects module, is used for further filtering out the available BSC of weighted value greater than threshold value from the available BSC that first submodule is selected;
Said second submodule also is used for selecting the handoff procedure that a BSC is used for UE from the available BSC that the second selection module filters out.
21. a system that in terminal switching process, confirms BSC is characterized in that said system comprises:
UE is used for the reporting terminal measurement report message;
A plurality of BSC, wherein each BSC is used to report the public-measurement report message, carries the voice coding modes of self supporting in the said public-measurement report message;
RNC is used for after receiving said terminal survey report message, according to the voice coding modes that each BSC supports, therefrom selects the handoff procedure that a BSC is used for UE, and the said BSC that selects supports that at least one RNC is the voice coding modes that UE distributes.
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