CN102811473A - Method and system for processing radio link control (RLC) parameters and radio network controller (RNC) - Google Patents
Method and system for processing radio link control (RLC) parameters and radio network controller (RNC) Download PDFInfo
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Abstract
The invention discloses a method and a system for processing radio link control (RLC) parameters and a radio network controller (RNC). The method comprises the following steps of: after receiving a UP (User Plane) main/standby switch notice, sending an RLC reset message carrying a downlink HFN (Hyper Frame Number) to UE (User Equipment) by a UP of the RNC on an RB2 (Radio Bearer 2), and after receiving a confirmation message which is sent by UE on the RB2 and carries an RLC reset message of an uplink HFN, updating the current uplink HFN according to the downlink HFN and the uplink HFN; sending a reassortment message for indicating the UE to reconstruct RLC by the RNC on the RB2; and after the UE sets the uplink and the downlink HFNs of the RB2 according to the reassortment message again, receiving a reassortment response message which is from the UE and carries the HFN of each RLC, and reconfiguring the RLC parameters according to the reassortment response message. According to the invention, the system processing capacity and the system performance are improved.
Description
Technical field
The present invention relates to the communications field, relate in particular to processing method and system, the radio network controller (Radio Network Controller abbreviates RNC as) of a kind of Radio Link control (Radio Link Control abbreviates RLC as) parameter.
Background technology
At present; The masterslave switchover technology has been widely used in the communication system; This technology is meant under the situation that some hardware breaks down, and can work on by enough subsequent use hardware, and is unaffected with the basic operation that guarantees system; Miscellaneous service continues the technology of maintenance simultaneously, and it can improve the stability and the user experience of system.
Insert (Wideband Code Division Multiple Access at WCDMA; Abbreviate WCDMA as) in the system; The wireless network layer of RNC mainly is divided into chain of command (Control Plane abbreviates CP as) and user plane (User Plane abbreviates UP as).Wherein, the configuration information of in store each subscriber equipment of CP (User Equipment abbreviates UE as), UP is responsible for all data of concrete each UE of processing.In correlation technique; When UP breaks down, need in RNC, carry out the masterslave switchover of user plane, because the data volume that UP deposits is bigger; The cost of backing up in realtime is also bigger; So common way is the configuration information of CP according to preservation, on new UP, rebuild the data structure of each UE.But adopting this method UP still to have some information is to provide, for example; The encryption/decryption parameter of RLC and sequence number, therefore, after the masterslave switchover of user plane finishes; UP may occur can't successfully resolve the information that receives, and causes service fail.
Summary of the invention
Main purpose of the present invention is to provide a kind of processing scheme of RLC parameter, when carrying out the masterslave switchover of user plane to solve RNC in the above-mentioned correlation technique at least owing to the problem that can't successful resolving information causes service fail.
To achieve these goals, according to an aspect of the present invention, a kind of processing method of RLC parameter is provided.
Processing method according to RLC parameter of the present invention; May further comprise the steps: after the UP of RNC receives UP masterslave switchover notice; On RB2, send the RLC reset message that carries descending HFN to UE; And after the affirmation message that receives the RLC reset message that carries up HFN that is sending on the RB2 from UE, upgrade current up HFN according to descending HFN and up HFN; RNC sends the reallocation message that is used to indicate UE reconstruction RLC to UE on RB2; UE reset the up-downgoing HFN of RB2 according to reallocation message after, RNC received the reprovision response message from the HFN that carries each RLC of UE of UE, and according to the content in the reprovision response message RLC parameter was reconfigured.
Preferably, UP comprises sending the RLC reset message carry descending HFN to UE on the RB2: RNC sends the RLC reset message twice to UE on RB2, wherein, the reset sequence number RSN in the control frame of twice RLC reset message is inequality.
Preferably, comprise according to descending HFN and the current up HFN of up HFN renewal: the higher value among up HFN and the descending HFN is added 1 as the current up HFN after upgrading.
Preferably, RNC on the RB2 after UE sends the reallocation message be used to indicate UE to rebuild RLC, this method also comprises: UE receives the reallocation message from RNC, rebuilds all RLC, and the current up HFN after the up-downgoing HFN of RB2 all is set to upgrade.
Preferably; According to the content in the reprovision response message RLC parameter is reconfigured and to comprise: RNC all RLC outside the RB2 that reset, and all RLC outside the RB2 among the RNC are carried out initialization according to the HFN corresponding that carries in the reprovision response message with each RLC; RNC puts 0 with the descending sequence number of RB2, and the current up HFN of the descending HFN of RB2 after being set to upgrade.
Preferably, RNC is before the affirmation message that receives the RLC reset message that carries up HFN that is sending on the RB2 from UE, and this method also comprises: the current descending HFN of the RB2 that preserve UE this locality is set to the descending HFN that carries in the RLC reset message.
Preferably, above-mentioned reallocation message comprises the encryption configuration request of carrying down-going synchronous ciphering sequence number information.
Preferably, after according to the content in the reprovision response message RLC parameter being reconfigured, this method also comprises: when the up-downgoing HFN of RB2 changes, and the up-downgoing HFN of the UP of RNC after the CP of RNC is notifying changed; UP receives the UP masterslave switchover notice from CP; Reset the up-downgoing HFN of RB2 according to the up-downgoing HFN after the change in the UP masterslave switchover notice; And on RB2, send reallocation message to UE, wherein, carry the up-downgoing HFN after the change in the UP masterslave switchover notice.
To achieve these goals, according to a further aspect in the invention, a kind of RNC is provided also.
According to RNC of the present invention, comprise UP module and CP module, wherein, the UP module comprises: first transmitting element, be used for after receiving UP masterslave switchover notice, on RB2, send the Radio Link control RLC reset message that carries descending HFN to user equipment (UE); Updating block is used for after the affirmation message that receives the RLC reset message that carries up HFN that is sending on the RB2 from UE, upgrades current up HFN according to descending HFN and up HFN; Dispensing unit is used for according to the content of the reprovision response message that returns from the UE of CP module the RLC parameter being reconfigured; The CP module comprises: second transmitting element is used on RB2, sending the reallocation message that is used to indicate UE reconstruction RLC to UE; Receiving element is used for UE resets the up-downgoing HFN of RB2 according to reallocation message after, receives the reprovision response message from the HFN that carries each RLC of UE of UE.
To achieve these goals, in accordance with a further aspect of the present invention, a kind of treatment system of RLC parameter is provided also.
Treatment system according to RLC parameter of the present invention; Comprise UE and above-mentioned RNC, wherein, UE comprises: rebuilding module; Be used for rebuilding all RLC from the reallocation message of RNC according to what receive, and the current up HFN after the up-downgoing HFN of RB2 all is set to upgrade.
Through the present invention; Adopt UE after the reallocation message that receives the RNC transmission; Return the situation of the up-downgoing HFN of current use; RNC to the mode that the RLC parameter reconfigures, owing to the problem that can't successful resolving information causes service fail, has improved the disposal ability and the performance of system when having solved RNC in the correlation technique and carrying out the masterslave switchover of user plane according to the content in the reprovision response message of HFN that carries each RLC of UE.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 is the flow chart according to the processing method of the RLC parameter of the embodiment of the invention;
Fig. 2 is the structured flowchart according to the RNC of the embodiment of the invention;
Fig. 3 is the structured flowchart according to the treatment system of the RLC parameter of the embodiment of the invention;
Fig. 4 is the structural representation according to the RLC Reset frame of the embodiment of the invention one;
Fig. 5 is the schematic flow sheet according to RLC encryption/decryption parameter alignment thereof behind the UP masterslave switchover of the embodiment of the invention one;
Fig. 6 is the schematic flow sheet according to RLC encryption/decryption parameter alignment thereof behind the UP masterslave switchover of the embodiment of the invention two.
Embodiment
Hereinafter will and combine embodiment to specify the present invention with reference to accompanying drawing.Need to prove that under the situation of not conflicting, embodiment and the characteristic among the embodiment among the application can make up each other.
According to the embodiment of the invention, a kind of processing method of RLC parameter is provided.Fig. 1 is the flow chart according to the processing method of the RLC parameter of the embodiment of the invention, and is as shown in Figure 1, and this flow process may further comprise the steps:
Step S102; After the UP of RNC receives UP masterslave switchover notice; Upward carry the RLC reset message of the high-order frame number of descending encryption (Hyper Frame Number abbreviates HFN as) at radio bearer (Radio Bear abbreviates RB2 as) to the UE transmission; And after the affirmation message that receives the RLC reset message that carries up HFN that is sending on the RB2 from UE, upgrade current up HFN according to descending HFN and up HFN;
Step S104, RNC send the reallocation message that is used to indicate UE reconstruction RLC to UE on RB2;
Step S106, UE reset the up-downgoing HFN of RB2 according to reallocation message after, RNC received the reprovision response message from the HFN that carries each RLC of UE of UE, and according to the content in the reprovision response message RLC parameter was reconfigured.
Pass through above-mentioned steps; Adopt UE after the reallocation message that receives the RNC transmission; Return the situation of the up-downgoing HFN of current use; RNC to the mode that the RLC parameter reconfigures, owing to the problem that can't successful resolving information causes service fail, has improved the disposal ability and the performance of system when having solved RNC in the correlation technique and carrying out the masterslave switchover of user plane according to the content in the reprovision response message of HFN that carries each RLC of UE.
Preferably; In step S102; UP comprises sending the RLC reset message carry descending HFN to UE on the RB2: RNC sends the RLC reset message twice to UE on RB2; Wherein, the reset sequence number in the control frame of this twice RLC reset message (Reset Sequence Number abbreviates RSN as) is inequality.For example, the RSN in the control frame of RLC reset message is 0 for the first time, and another time is 1.This method can be guaranteed the validity that RLC resets.
Preferably, in step S102, comprise according to descending HFN and the current up HFN of up HFN renewal: the higher value among up HFN and the descending HFN is added 1 as the current up HFN after upgrading.This method realizes simple, workable.
Preferably, after step S104, UE receives the reallocation message from RNC, rebuilds all RLC, and the current up HFN after the up-downgoing HFN of RB2 all is set to upgrade.This method can guarantee the consistency of the up-downgoing HFN among UE and the RNC, improves the validity of system.
Preferably; In step S106; RNC reconfigures the RLC parameter according to the content in the reprovision response message and comprises: RNC all RLC outside the RB2 that reset, and all RLC outside the RB2 among the RNC are carried out initialization according to the HFN corresponding that carries in the reprovision response message with each RLC; RNC puts 0 with the descending sequence number of RB2, and the current up HFN of the descending HFN of RB2 after being set to upgrade.This method can further improve the validity and the accuracy of system.
Preferably, in step S102, RNC is before the affirmation message that receives the RLC reset message that carries up HFN that is sending on the RB2 from UE, and the current descending HFN of the RB2 that UE can this locality preserves is set to the descending HFN that carries in the RLC reset message.This method is simple and practical, workable.
Preferably, the reallocation message among the step S104 comprises the encryption configuration request of carrying down-going synchronous ciphering sequence number information.For example, this reallocation message can indicate UE to rebuild AM (affirmation mode), UM (Unacknowledged Mode) RLC of all RB, and UE can carry the enciphered message (that is, the HFN with all UM, AM RLC reports RNC) of up-downgoing in the reprovision response message.This method is simple and practical, workable.
Need to prove that RLC one has three kinds, have only UM and AM that HFN is arranged.In step S106; UE resets the up-downgoing HFN of RB2 according to reallocation message after; RNC can receive the reprovision response message from the HFN that carries each UM of UE, AM RLC of UE, and RNC can reconfigure the RLC parameter according to the content in this reprovision response message.
Preferably, after step S106, when the up-downgoing HFN of RB2 changes, the up-downgoing HFN of the UP of RNC after the CP of RNC is notifying changed; UP receives the UP masterslave switchover notice from CP; Reset the up-downgoing HFN of RB2 according to the up-downgoing HFN after the change in the UP masterslave switchover notice; And on RB2, send reallocation message to UE, wherein, carry the up-downgoing HFN after the change in the UP masterslave switchover notice.When this method can change at the up-downgoing HFN of RB2, notify the up-downgoing HFN after acquiring change, improved the efficient of system through the UP masterslave switchover.
Corresponding to said method, the embodiment of the invention also provides a kind of RNC.Fig. 2 is the structured flowchart according to the RNC of the embodiment of the invention, and is as shown in Figure 2, and RNC 20 comprises UP module 22 and CP module 24; Wherein, UP module 22 comprises: first transmitting element 222 is used for after receiving UP masterslave switchover notice, on RB2, sending the RLC reset message that carries descending HFN to UE; Updating block 224 is used for after the affirmation message that receives the RLC reset message that carries up HFN that is sending on the RB2 from UE, upgrades current up HFN according to descending HFN and up HFN; Dispensing unit 226, the content of the reprovision response message that is used for returning according to UE reconfigures the RLC parameter; CP module 24 comprises: second transmitting element 242, be coupled to updating block 224, and be used for reallocation message at the current up HFN after renewal is carried in the UE transmission on the RB2; Receiving element 244 is coupled to dispensing unit 226, is used for UE resets the up-downgoing HFN of RB2 according to reallocation message after, receives the reprovision response message from the HFN that carries each RLC of UE of UE.
Through above-mentioned RNC 20; Adopt UE after the reallocation message that receives RNC 20 transmissions; Return the situation of the up-downgoing HFN of current use; Dispensing unit 226 to the mode that the RLC parameter reconfigures, owing to the problem that can't successful resolving information causes service fail, has improved the disposal ability and the performance of system when having solved RNC in the correlation technique and carrying out the masterslave switchover of user plane according to the content in the reprovision response message of the HFN that carries each RLC of UE.
Preferably, updating block 224 also is used for the higher value of up HFN and descending HFN is added 1 as the current up HFN after upgrading.
According to the embodiment of the invention, a kind of treatment system of RLC parameter is provided also.Fig. 3 is the structured flowchart according to the treatment system of the RLC parameter of the embodiment of the invention; As shown in Figure 3, this system 30 comprises UE 32 and above-mentioned RNC 20, wherein; UE32 comprises: rebuilding module 322; Be coupled to second transmitting element 242 and receiving element 244, be used for rebuilding all RLC according to the reallocation message that receives from RNC 20, and the current up HFN after the up-downgoing HFN of RB2 all is set to upgrade.
Be elaborated below in conjunction with preferred embodiment and accompanying drawing implementation procedure to the foregoing description.
Embodiment one
Present embodiment provides the method for the efficient alignment of wireless chain control layer encryption/decryption parameter in a kind of user plane masterslave switchover.Owing to after the UP masterslave switchover, keep professional and continue the sequence number of the rlc layer of UP and UE (Sequence Number; Abbreviate SN as) must be consistent; If under the situation of encrypting, encrypt counting (Count-C) and also must be consistent, so; The high-order frame number of the encryption at two ends (Hyper Frame Number abbreviates HFN as) also must be consistent.
Need to prove that the pattern of RLC has three kinds: AM (affirmation mode), UM (Unacknowledged Mode) and TM (transparent mode).For the AM pattern, can use the reset mode of (RLC Reset) of RLC to align; For other two kinds of patterns, all need CP to send reallocation message and align, and reallocation message is issued UE on RB2 to UE, the rlc layer of RB2 is the AM pattern again, therefore, RB2 can be used.
Fig. 4 is the structural representation according to the RLC Reset frame of the embodiment of the invention one, and is as shown in Figure 4, carries reset sequence number (Reset Sequence Number abbreviates RSN as) in the RLC Reset control frame, is used to distinguish each RLC Reset process.Because RLC Reset process must come into force under the inconsistent situation of RSN of preserving with UE, and this moment, UP did not know how many RSN that UE preserves is, therefore; In implementation process; Here UP issues RLC Reset control frame and can be twice, fills in RSN respectively and equals 0 and 1, guarantees that RLC resets to come into force.
Next; UP possibly receive that once perhaps the affirmation message of the up RLC reset message of twice UE (promptly; RLC Reset ACK); The HFN that carries in should the up RLC Reset ACK with last UE comes the up HFN of UP is provided with, and the mode of setting can be that the higher value of the up-downgoing HFN among RLC Reset and the RLC ResetACK adds 1 according to protocol requirement.
After treating that all flow processs finish, up-downgoing HFN will be set to unanimity, still, because also need issue the message of eating dishes without rice or wine this moment, so descending HFN temporarily can not change, still keeps original value.At this moment, represent that RB2 is descending can to have been used, CP sends on RB2 and carries down-going synchronous ciphering sequence number information (Dl-Counter-Sync-Info) reallocation message of eating dishes without rice or wine and give UE.After UE receives this message, rebuild the RLC of all RB, wherein the HFN of RB2 is set to uplink and downlink HFN higher value+1; UE returns reprovision and accomplishes message, the HFN value of carrying each RLC on RB2;
Because the up HFN value of the RB2 of UE and UP is consistent at this moment, so UP can successfully untie this message, sends to CP.Next, CP sends message to UP, and each RLC of indication UP resets and the HFN initialization.For special RB2, because synchronous mistake only need be changed to 0 to descending transmission SN again, and it is just passable to be changed to up HFN to descending HFN.So far, realized the process that the RLC encryption/decryption parameter behind the masterslave switchover need align.
Fig. 5 is that as shown in Figure 5, this method may further comprise the steps according to the schematic flow sheet of RLC encryption/decryption parameter alignment thereof behind the UP masterslave switchover of the embodiment of the invention one:
Step S502, UP receive the notification message of CP, and the reason of initiation is because masterslave switchover has taken place UP;
Step S504, UP (RESET) flow process of on the AM of RB2 RLC, initiating to reset, RSN be 0,1 each send once;
Step S506, after the last RLC RESET flow process of RB2 finished, UP write down the RSN of the RESETACK that receives, and is designated as uplink and downlink HFN maximum+1 to the up HFN of UP;
Step S508, CP send on RB2 and carry the Dl-Counter-Sync-Info reallocation message of eating dishes without rice or wine, and after UE receives this message, rebuild all RLC, and wherein the up-downgoing HFN of RB2 is set to uplink and downlink HFN maximum+1; UE returns reprovision and accomplishes message, the HFN value of carrying each RLC on RB2;
Step S510, the message that CP returns according to UE is sent message to UP, all RLC outside the RB2 that resets, and carry out initialization according to new HFN;
Step S512, UP is changed to 0 again with the descending sequence number of RB2, and descending HFN is changed to the value identical with up HFN.
Find out that through above content the key content of the method for encryption/decryption parameter alignment has 2 points in the UP masterslave switchover that present embodiment provides: (1) issues RLC Reset twice, guarantee that UE can normally reset; (2) the asynchronous mode that comes into force of the HFN of the RB2 up-downgoing of UP, that is, it is up at first to come into force, and it is descending to come into force then.
In implementation process, in the present embodiment reciprocal process of RNC and UE can for:
Step 1 under the situation that the UP masterslave switchover takes place, is at first eated dishes without rice or wine on RB2, to issue twice RSN and is respectively 0 and 1 RLC RESET and wraps, and carries current descending HFN;
Step 2, UE can go up and send out once or twice RLC RESETACK bag, and guarantees all zero clearings of parameter that this moment is inner with RB2, and it is the descending HFN of appointment in the Reset bag that current descending HFN is set, and can carry current up HFN simultaneously;
Step 3, RNC sends on RB2 and carries Dl-Counter-Sync-Info (comprising the up HFN that upgrades among the step S506) reallocation message of eating dishes without rice or wine, and this moment, RNC used still just now descending HFN is to guarantee that UE can correctly decipher.
Step 4, UE can encrypt the transmission response message with new up HFN on RB2, and this moment, the RNC side was upgraded up HFN in advance; So can normally receive; And upgrade descending HFN, from then on after, RNC and UE will adopt new up-downgoing HFN to carry out encryption and decryption.
It is thus clear that, in the present embodiment, when UP breaks down; CP not only can rebuild the data structure of each UE according to the configuration information of preserving on new UP, but also can through with the interaction flow of UE; Obtain encryption/decryption parameter and the sequence number of RLC, make and realize alignment between UP, the UE.
Embodiment two
Present embodiment is the optimization on the basis of embodiment one, and RLC encryption/decryption parameter alignment schemes behind a kind of UP masterslave switchover also is provided.When the HFN of UP changes; UP can initiatively report CP to RB2 up-downgoing HFN and preserve; When masterslave switchover takes place UP, can save the flow process of using RLC Reset to obtain up-downgoing HFN among the step S504-S506 among the embodiment one like this, CP directly is provided with the up-to-date descending HFN of descending HFN for having preserved of UP; Be set to up HFN higher value+1 of uplink and downlink HFN simultaneously; Directly get into the flow process of sending Dl-Counter-Sync-Info (the down-going synchronous ciphering sequence number information) reallocation message of eating dishes without rice or wine, UE returns reprovision and accomplishes message, the HFN value of carrying each RLC on RB2; Flow is by shown in the front.
The cycle that it should be noted that the HFN saltus step is longer, therefore; In most cases, above-mentioned flow process is successful, if but just the masterslave switchover of UP appear at moment of HFN saltus step; The phenomenon of new HFN then may appear in time not reporting, the situation of the reprovision flow process failure of eating dishes without rice or wine this moment.The flow process failure if eat dishes without rice or wine, then can't judge up HFN lack+1, still descending HFN lack+1; If initiatively attempt, also relatively expend time in, so; Step before can restart to optimize this moment promptly, is used the method for embodiment one; Obtain HFN accurately with RLC RESET, the beginning flow.
Fig. 6 is that as shown in Figure 6, this method may further comprise the steps according to the schematic flow sheet of RLC encryption/decryption parameter alignment thereof behind the UP masterslave switchover of the embodiment of the invention two:
Step S602, UP are in running, in case change has taken place up-downgoing HFN, just need notice CP;
Step S604, UP receive the notification message of CP, and the reason of initiation is because masterslave switchover has taken place UP; In notification message, carry the up-downgoing HFN value of last preservation simultaneously;
Step S606, UP is arranged to this descending HFN with descending HFN, and up HFN is set to higher value+1 of these uplink and downlink HFN;
Step S608, CP send on RB2 and carry the Dl-Counter-Sync-Info reallocation message of eating dishes without rice or wine, if UE receives this message, then rebuild all RLC, and wherein the up-downgoing HFN of RB2 is set to uplink and downlink HFN maximum+1; UE returns reprovision and accomplishes message, the HFN value of carrying each RLC on RB2;
Step S610 if CP can receive the message that UE returns, explains that up-downgoing HFN is correct, sends message to UP, all RLC outside the RB2 that resets, and carry out initialization according to new HFN.Otherwise, explain that up-downgoing HFN is incorrect, the overtime or UE of waiting timer can take place return the reprovision failure of eating dishes without rice or wine, then carries out end again according to embodiment one;
Step S612, UP is changed to 0 again with the descending sequence number of RB2, and descending HFN is changed to the value identical with up HFN.
In sum; It is a kind of on radio network controller that the embodiment of the invention provides; The scheme of RLC encryption/decryption parameter alignment can be applicable to the WCDMA system in the user plane masterslave switchover, the asynchronous mode that comes into force of the HFN of the RB2 up-downgoing of employing UP; Owing to the problem that can't successful resolving information causes service fail, improved disposal ability and the performance of system when having solved RNC in the correlation technique and carrying out the masterslave switchover of user plane.
Obviously; It is apparent to those skilled in the art that above-mentioned each module of the present invention or each step can realize that they can concentrate on the single calculation element with the general calculation device; Perhaps be distributed on the network that a plurality of calculation element forms; Alternatively, they can be realized with the executable program code of calculation element, carried out by calculation element thereby can they be stored in the storage device; Perhaps they are made into each integrated circuit modules respectively, perhaps a plurality of modules in them or step are made into the single integrated circuit module and realize.Like this, the present invention is not restricted to any specific hardware and software combination.
The above is merely the preferred embodiments of the present invention, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.All within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. the processing method of a Radio Link control RLC parameter is characterized in that, may further comprise the steps:
After the user plane UP of radio network controller (RNC) receives UP masterslave switchover notice; On radio bearer RB2, send the RLC reset message that carries the high-order frame number HFN of descending encryption to user equipment (UE); And after the affirmation message that receives the said RLC reset message that carries up HFN that is sending on the said RB2 from said UE, upgrade current up HFN according to said descending HFN and said up HFN;
Said RNC sends the reallocation message that is used to indicate said UE reconstruction RLC to said UE on said RB2;
After said UE resets the up-downgoing HFN of said RB2 according to said reallocation message; Said RNC receives the reprovision response message from the HFN of said each RLC of UE of carrying of said UE, and according to the content in the said reprovision response message RLC parameter is reconfigured.
2. method according to claim 1 is characterized in that, said UP sends the said RLC reset message that carries said descending HFN to said UE and comprises on said RB2:
Said RNC sends said RLC reset message twice to said UE on said RB2, wherein, the reset sequence number RSN in the control frame of twice said RLC reset message is inequality.
3. method according to claim 1 is characterized in that, comprises according to said descending HFN and the current up HFN of said up HFN renewal:
Higher value among said up HFN and the said descending HFN is added 1 as the said current up HFN after upgrading.
4. method according to claim 1 is characterized in that, said RNC on the said RB2 after said UE sends the reallocation message that is used to indicate said UE to rebuild RLC, also comprise:
Said UE receives the said reallocation message from said RNC, rebuilds all RLC, and the said current up HFN after the said up-downgoing HFN of said RB2 all is set to upgrade.
5. method according to claim 1 is characterized in that, according to the content in the said reprovision response message RLC parameter is reconfigured to comprise:
Said RNC all RLC outside the said RB2 that reset, and all RLC outside the RB2 described in the said RNC are carried out initialization according to the HFN corresponding that carries in the said reprovision response message with each RLC;
Said RNC puts 0 with the descending sequence number of said RB2, and the said current up HFN of the said descending HFN of said RB2 after being set to upgrade.
6. method according to claim 1 is characterized in that, said RNC also comprised before the affirmation message that receives the said RLC reset message that carries up HFN that is sending on the said RB2 from said UE:
The current descending HFN of the said RB2 that preserve said UE this locality is set to the said descending HFN that carries in the said RLC reset message.
7. method according to claim 1 is characterized in that, said reallocation message comprises the encryption configuration request of carrying down-going synchronous ciphering sequence number information.
8. according to each described method in the claim 1 to 7, it is characterized in that, after according to the content in the said reprovision response message RLC parameter being reconfigured, also comprise:
When the said up-downgoing HFN of said RB2 changes, the said up-downgoing HFN of the said UP of said RNC after the CP of said RNC is notifying changed;
Said UP receives the said UP masterslave switchover notice from said CP; Reset the said up-downgoing HFN of said RB2 according to the said up-downgoing HFN after the said change in the said UP masterslave switchover notice; And on said RB2, send said reallocation message to said UE; Wherein, carry said up-downgoing HFN after the said change in the said UP masterslave switchover notice.
9. a radio network controller (RNC) is characterized in that, comprises user plane UP module and chain of command CP module, wherein,
Said UP module comprises: first transmitting element, be used for after receiving UP masterslave switchover notice, and on radio bearer RB2, send the Radio Link control RLC reset message that carries the high-order frame number HFN of descending encryption to user equipment (UE); Updating block is used for after the affirmation message that receives the said RLC reset message that carries up HFN that is sending on the said RB2 from said UE, upgrades current up HFN according to said descending HFN and said up HFN; Dispensing unit is used for according to the content of the reprovision response message that returns from the said UE of said CP module the RLC parameter being reconfigured;
Said CP module comprises: second transmitting element is used on said RB2, sending the reallocation message that is used to indicate said UE reconstruction RLC to said UE; Receiving element is used for after said UE resets the up-downgoing HFN of said RB2 according to said reallocation message, receives the said reprovision response message from the HFN of said each RLC of UE of carrying of said UE.
10. the treatment system of Radio Link control RLC parameter is characterized in that comprise the said RNC of user equipment (UE) and claim 9, wherein, said UE comprises:
Rebuilding module is used for rebuilding all RLC according to the said reallocation message from said RNC that receives, and the said current up HFN after the said up-downgoing of said RB2 encrypted high-order frame number HFN and all be set to upgrade.
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