CN101111062A - Method for relocating service wireless network subsystem - Google Patents
Method for relocating service wireless network subsystem Download PDFInfo
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Abstract
The present invention discloses a method for servicing the repositioning of a wireless network sub-system, which is used to send the RB information of a reconfiguration message to a UE by carrying a source side in a source-destination RRC transparent box, thereby informing the source side of a destination side of adopting which SRB transmission reconfiguration message. Furthermore, the destination side of the SRNS reconfiguration automatically selects a method from the structure destination-source RRC transparent box when filling the destination-source RRC transparent box according to a business QoS. The source side sends the reconfiguration message to the UE according to the destination-source RRC transparent box, and the message is transmitted on the SRB assigned in the source-destination RRC transparent box. After the switchover is completed, the consistence of the HFN and the SN of the destination side and the HFN and the SN of the UE can be assured, thereby improving the reliability of the signaling data transmission through the completeness inspection of the UE.
Description
Technical field
The present invention relates to the handoff technique in the mobile communication system, the interior SRNS Serving Radio Network Subsystem of particularly a kind of universal mobile telecommunications system (UMTS) (SRNS) method for relocating.
Background technology
In the UMTS system, when the sub-district that subscriber equipment (UE) is controlled by a RNC switches to the sub-district of another RNC control,, then must follow the SRNS reorientation takes place if there is not the Iur interface.If when existing Iur interface and switching type to be direct-cut operation, also to carry out the SRNS reorientation usually.The SRNS reorientation is meant that the tie point that is connected UTRAN one side between UMTS wireless access network (UTRAN) and the core net (CN) transfers to the process of purpose RNC from source RNC, and SRNS role also transfers to another RNS from a RNS (RNS).In transfer process, the origination side RNS of this transfer is called as source, and the purpose RNS that transfers to is called as destination.The characteristics of mobile communication have determined UTRAN will support mobile management; And the SRNS reorientation is the important content of mobile management.
When in the UMTS system, carrying out the SRNS reorientation of UE participation, source arrives purpose RRC transparent box by CN to the source that destination transmits, destination is according to the content of source to purpose RRC transparent box, select suitable physical (L1), link layer (L2) resource, transmit the RRC transparent box of purpose to source to the source by CN.Source receives purpose after the RRC transparent box in source, sends reconfiguration message by certain Signaling Radio Bearer (SRB) to UE.SRB is used to transmit RRC message, and SRB commonly used has SRB0/SRB1/SRB2/SRB3/SRB4, and source can adopt SRB1 or SRB2 to send here.So promptly finished the SRNS reorientation that UE participates in.After this, be the UE service by destination, can send downlink signaling to UE by SRB1 or SRB2.
In the UMTS system, except that urgent call or other special circumstances, must start integrity protection after setting up signaling and connecting, as carry out the CS registration, CS calls out, and PS adheres to, and PDP activates when waiting operation, all needs signaling is carried out integrity protection.When starting integrity protection, the signaling between UE and Serving RNC all needs the integrity checking through the other side.Integrity checking comprises the inspection of 2 field MAC-I and RRC sequence number (RRC SN), and the inspection of these two fields depends on RRC SN and the high bit sequence number of RRC (RRC HFN), when RNC and UE in the maintenance of RRC HFN or RRC SN, occur different, thereby the message of transmission just possibly can't be dropped by recipient's integrity checking.RNC and UE have comprised RRC HFN and the RRC SN of all SRB respectively when safeguarding RRC HFN and RRC SN, like this, RNC and UE just must every employed SRB of signaling of clear carrying.When destination can't know that source is when UE sends the SRB of reconfiguration information, destination just occurs different in the maintenance of RRC HFN and RRC SN with UE, cause the downlink signaling on SRB1 after this or the SRB2 can't be by the integrity checking of UE, UE can't correctly receive new measurement control messages, thereby cause UE under the very poor situation of wireless quality, also can't switch, the professional service quality that provides is provided, even cause the serious consequence of service disconnection.
If source comprises the RB ID that sends reconfiguration message to the source of destination transmission by CN in purpose RRC transparent box, prior art regulation: construct descending RRC message by purpose RNC, calculation of integrity information and finish packing in the message, source RNC only carries out transparent transmission on the SRB of RB ID indication.
There is a problem in this processing when can't harm reorientation.So-called harmless reorientation exactly when carrying out the SRNS reorientation, retransmits assurance up-downgoing packet by PDCP and does not lose on eating dishes without rice or wine.When can't harm reorientation, on the upstream data direction, the source comprises the up PDCP sequence number PDCP1 that next expectation receives in purpose RRC transparent box, when destination arrives source RRC transparent box in the structure purpose, the PDCP1 that receives is inserted purpose expect that to the next one in the RRC transparent box of source source directly sends this PDCP1 to terminal in the up PDCP sequence number field of reception.And in fact, in can't harm repositioning process, send re-positioning request from source and send reconfiguration message to UE to destination, need nearly 2 seconds time, in this process, may still there be transfer of data in source and UE, in this case, purpose just is not the up PDCP sequence number that real next one expectation receives to the PDC P1 in the RRC transparent box of source, and after terminal receives this sequence number, will retransmit the PDCP data that this sequence number begins, will inevitably cause the reduction of system effectiveness like this, and change when a lot of when the up PDCP sequence number of UE, if require UE to send by the PDCP sequence number in the reconfiguration message, UE may be for a long time the PDCP data of this sequence number not, will in transfer of data, produce grave error like this, and may cause service disconnection.
Summary of the invention
In view of this, the invention provides a kind of SRNS method for relocating, thereby when integrality starts the SRNS reorientation of back transmission, improve the reliability of signaling data transmission.
Further aim of the present invention is, a kind of SRNS method for relocating is provided, thereby can improve the transmission quality of system signaling when can't harm reorientation.
For achieving the above object, the present invention adopts following technical scheme:
A kind of method for relocating service wireless network subsystem is characterized in that, this method comprises:
A, source arrive purpose RRC transparent box to destination transmission source, and comprise source sends RB information from reconfiguration message to UE therein;
B, according to the source to purpose RRC transparent box, the structure purpose is to source RRC transparent box;
C, source structure reconfiguration message, and on the RB of the RB information appointment described in the step a, send reconfiguration message to UE, UE sends to reshuffle to destination and finishes message, finishes the SRNS reorientation;
D, destination are according to the RB information described in the step a, and structure also sends downlink signaling to UE.
Preferably, described in the step b according to the source to purpose RRC transparent box structure purpose to source RRC transparent box can for, to purpose RRC transparent box, judge whether can't harm reorientation according to the source, arrive source RRC transparent box according to judged result structure purpose again.
Preferably, described judged result is for can't harm reorientation, then described structure purpose to source RRC transparent box is: by the body matter of purpose radio network controller structure RRC message, and send to source radio network controller, source radio network controller is revised message on the basis of the RRC message body content of receiving, fill in the up PDCP sequence number that next expectation receives, and calculation of integrity information;
Described judged result is not for can't harm reorientation, and then described structure purpose to source RRC transparent box is: construct descending DCCH message by the purpose radio network controller, calculate integrity information in the message.
When not can't harm reorientation, described calculation of integrity information can for:
When the RB information representation SRB1 described in the step a, RRC SN (descending SRB1SN+1) mod16 that is the source in the purpose RRC transparent box then, COUNT-I be the source to the descending SRB1 HFN in the purpose RRC transparent box move to left 4 again with the result of descending SRB1 SN+1 addition, calculate the MAC-I field according to COUNT-I again;
When the RB information representation SRB2 described in the step a, RRC SN (descending SRB2 SN+1) mod16 that is the source in the purpose RRC transparent box then, COUNT-I be the source to the descending SRB2 HFN in the purpose RRC transparent box move to left 4 again with the result of descending SRB2 SN+1 addition, calculate the MAC-I field according to COUNT-I again.
Preferably, the reconfiguration message described in the step c can be radio bearer reconfiguration message, transmission channel reconfiguration message or physical channel reconfiguration message.
Preferably, during RB information representation SRB1 described in the step a, the destination described in the steps d according to the RB information structuring downlink signaling described in the step a can for:
If destination sends the SRB1 signaling, (descending SRB1 SN+2) mod16 that is the source in the purpose RRC transparent box of the RRC SN in the downlink signaling then, COUNT-I are that the source moves to left 4 to the descending SRB1 HFN in the purpose RRC transparent box and adds descending SRB1 SN+2;
If destination sends the SRB2 signaling, (descending SRB2 SN+1) mod16 that is the source in the purpose RRC transparent box of the RRC SN in the downlink signaling then, COUNT-I are that the source moves to left 4 to the descending SRB2 HFN in the purpose RRC transparent box and adds descending SRB2 SN+1.
Preferably, during RB information representation SRB2 described in the step a, the destination described in the steps d according to the RB information structuring downlink signaling described in the step a can for:
If destination sends the SRB1 signaling, (descending SRB1 SN+1) mod16 that is the source in the purpose RRC transparent box of the RRC SN in the downlink signaling then, COUNT-I are that the source moves to left 4 to the descending SRB1 HFN in the purpose RRC transparent box and adds descending SRB1 SN+1;
If destination sends the SRB2 signaling, (descending SRB2 SN+2) mod16 that is the source in the purpose RRC transparent box of the RRC SN in the downlink signaling then, COUNT-I are that the source moves to left 4 to the descending SRB2 HFN in the purpose RRC transparent box and adds descending SRB2 SN+2.
Preferably, described RB information can be RB ID.
Preferably, described RB ID can be the radio bearer id field of the RRC message that is used to switch.
As seen from the above technical solution, the present invention sends the RB information of reconfiguration message by carry source in the purpose RRC transparent box in the source to UE, thus the notice destination, and which SRB source will adopt transmit reconfiguration message.The destination of SRNS reorientation when filling in purpose to source RRC transparent box, independently selects to construct the mode of purpose to source RRC transparent box according to QoS of survice.Source sends reconfiguration message to source RRC transparent box to UE according to purpose again, and this message is transmitted on the SRB of source appointment in the purpose RRC transparent box.After switching is finished, when destination sends downlink signaling on SRB1 or SRB2, RB information according to storage, according to set method calculation of integrity information, the downlink signaling of destination transmission just can be by the integrity checking of UE like this, thereby improve the reliability of signaling data transmission, effectively improve service quality.
Further, when the structure purpose arrives source RRC transparent box, can construct according to whether can't harm reorientation, when can't harm reorientation, by the body matter of purpose RNC structure RRC message, source RNC revises message on RRC message basis, comprises the up PDCP sequence number of filling in next expectation, calculation of integrity information sends corresponding RRC message then.Like this, when can't harm reorientation, can obtain the current sequence number of PDCP accurately, thereby correctly fill in the up PDCP sequence number of next expectation, improve system effectiveness greatly, improve service quality.
Description of drawings
Fig. 1 is the overview flow chart of SRNS method for relocating in the mobile communication system of the present invention.
Fig. 2 is the workflow diagram of the SRNS method for relocating of the embodiment of the invention one.
The particular flow sheet of Fig. 3 when constructing purpose to source RRC transparent box jointly by source and destination in the embodiment of the invention one.
The particular flow sheet of Fig. 4 when constructing purpose to source RRC transparent box alone by destination in the embodiment of the invention one.
Fig. 5 is the workflow diagram of the SRNS method for relocating of the embodiment of the invention two.
The particular flow sheet of Fig. 6 when constructing purpose to source RRC transparent box jointly by source and destination in the embodiment of the invention two.
Embodiment
For making purpose of the present invention, technical scheme and advantage clearer, below with reference to the accompanying drawing embodiment that develops simultaneously, the specific embodiment of the present invention is described.
Basic thought of the present invention is: send the RB information of reconfiguration message by carry source in the purpose RRC transparent box in the source to UE, thereby which SRB notice destination source will adopt transmit reconfiguration message.Further, the destination of SRNS reorientation, when filling in " purpose is to source RRC transparent box ", select make according to QoS of survice, can be by the body matter of purpose RNC structure RRC message, source RNC revises message on RRC message basis, comprises filling in the PDCP sequence number, calculation of integrity information sends corresponding RRC message then.Like this, after switching is finished, just can guarantee that the HFN of destination and HFN and the SN of SN and UE are consistent, thereby can improve the reliability of signaling data transmission by the integrity checking of UE.When can't harm reorientation, method of the present invention can obtain current PDCP sequence number, thereby correctly fills in the PDCP sequence number (Next Receive SN) that next expectation receives, and improves system effectiveness, improves service quality.
Fig. 1 is the overview flow chart of SRNS method for relocating of the present invention.As shown in Figure 1, this method comprises:
Step 101, source arrives purpose RRC transparent box to destination transmission source, and comprises the RB information of source when UE sends reconfiguration message therein;
Step 102, to purpose RRC transparent box, the structure purpose is to source RRC transparent box according to the source;
Step 103, source structure reconfiguration message, and send reconfiguration message on the RB of the RB information appointment in step 101 to UE, and UE sends to reshuffle to destination and finishes message, and the SRNS reorientation is finished.
Step 104, destination are according to the RB information in the step 101, and structure also sends downlink signaling to UE.
In above-mentioned steps 102, can judge whether can't harm reorientation according to the source to purpose RRC transparent box, arrive source RRC transparent box according to judged result structure purpose again.
Lift specific embodiment explanation embodiments of the present invention below.In the following embodiments, the source RNS represents that with RNS_S the destination RNS is represented with RNS_T.
Embodiment one:
Fig. 2 is the workflow diagram of the interior SRNS method for relocating of mobile communication system of the embodiment of the invention one.The flow process of whole SRNS method for relocating comprises:
Step 201, UE sends measurement report to RNS_S, wherein comprises the down channel quality parameter of the neighbor cell that measures etc.
Step 202, RNS_S sends the reorientation preparation request to CN, comprises that in this request the source of carrying RB information is to purpose RRC transparent box;
In this step, the RNC among the RNS_S carries out switch decision, and the SRNS reorientation that UE participates in is initiated in decision.When RNC arrives purpose RRC transparent box in the source of filling in, comprise source sends RB information from reconfiguration message to UE.In the present embodiment, this RB information is exactly RB ID, by radio bearer id field (the RB identity for Handover message IE) expression of the RRC message that is used to switch.Because source only may adopt SRB1 or SRB2 to send when UE sends reconfiguration message, therefore the RB ID that carries here represents SRB1 or SRB2.If this moment, integrity protection started; the source also further comprises descending RRC HFN and the descending RRCSN of each SRB in the purpose RRC transparent box; be specially descending SRB1 HFN and SRB1 SN; descending SRB2 HFN and SRB2 SN; descending SRB3 HFN and SRB3 SN, descending SRB4 HFN and SRB4 SN.
Step 203, CN sends RELOCATION REQUEST message to RNS_T, wherein comprises from source that the RNS_S transparent transmission comes to purpose RRC transparent box.
Step 204, RNS_T storage HFN and SN, and RB ID, according to the QoS of business, the autonomous mode of selecting the structure purpose to source RRC transparent box can be selected the mode in the step 205 or select mode in the step 206.Such as: when business can't harm reorientation, select the mode in the step 205, when business not can't harm reorientation, select the mode in the step 206.If select the mode in the step 205, then execution in step 205 and subsequent step thereof, if select mode in the step 206, then execution in step 206 and subsequent step thereof;
In this step, after purpose RNC receives the RELOCATION REQUEST message of CN, descending SRB1 HFN and the SRB1 SN of storage source in the purpose RRC transparent box, descending SRB2 HFN and SRB2 SN, descending SRB3 HFN and SRB3 SN, and descending SRB4 HFN and SRB4 SN; Simultaneously, the RB ID that when UE sends reconfiguration message, adopts of the source that carries in the purpose RRC transparent box of storage source.
Step 205, source and destination are constructed purpose jointly to source RRC transparent box, and execution in step 207;
In this step, source and destination are constructed purpose to the idiographic flow of source RRC transparent box as shown in Figure 3 jointly, and this flow process comprises:
Step 205a, the body matter of RNS_T structure RRC message;
In this step, RNS_T to purpose RRC transparent box, selects suitable L1, L2 resource allocation to give UE according to the source that receives, constructs in the RRC message content about allocation of radio resources.
Step 205b, RNS_T sends re-positioning request to CN and replys, and carries the body matter of the RRC message of constructing among the step 205a during this is replied.
Step 205c, CN sends the reorientation order to RNS_S, carries the body matter of the next RRC message of RNS_T transparent transmission in this order.
Step 205d, RNS_S modified R RC message, calculation of integrity information.
In this step, calculate the integrity information of purpose to source RRC transparent box by RNS_S, the RRC SN and the RRC HFN that are kept when communicating by letter before between RNS_S and UE fill in and calculation of integrity information.
So just finished the structure of purpose to source RRC transparent box.
Step 206, destination structure purpose sends to RNS_S to source RRC transparent box, and execution in step 207;
In this step, destination structure purpose to source RRC transparent box and the idiographic flow that sends to RNS_S as shown in Figure 4, this flow process comprises:
Step 206a, destination structure purpose is to source RRC transparent box;
In this step, by the structure of the RNC among RNS_T downlink dedicated control channel message (DL DCCHMessage), promptly descending DCCH message, and in this message, calculate integrity information.Wherein and since before RNS_T do not keep communicate by letter with UE, also just not and UE keep same RRC SN and RRCHFN, be RRC SN and the RRC HFN that sends over according to the RNS_S that stores in the step 204 here, and RB ID comes calculation of integrity information.The method of concrete calculation of integrity information can for:
When the RB ID of storage in the step 204 represents SRB1, RRC SN (descending SRB1 SN+1) mod16 that is the source in the purpose RRC transparent box then, COUNT-I is that the source moves to left 4 to the descending SRB1 HFN in the purpose RRC transparent box and adds descending SRB1 SN+1, calculates the MAC-I field according to COUNT-I again;
When the RB ID of storage in the step 204 represents SRB2, RRC SN (descending SRB2 SN+1) mod16 that is the source in the purpose RRC transparent box then, COUNT-I is that the source moves to left 4 to the descending SRB2 HFN in the purpose RRC transparent box and adds descending SRB2 SN+1, calculates the MAC-I field according to COUNT-I again.
Calculation of integrity information according to the method described above, just can make the reconfiguration message that obtains according to this information integrity checking by UE, make UE successfully receive this message, and can be consistent with the RRC HFN and the RRC SN that safeguard among the destination RNC, for destination RNC between communicate by letter ready.
Step 206b, RNS_T sends re-positioning request to CN and replys, and wherein comprises the purpose that obtains among the step 206a to source RRC transparent box.
Step 206c, CN sends the reorientation order to RNS_S, comprises purpose by the RNS_T transparent transmission in this order to source RRC transparent box.
Like this, just finished destination structure purpose to source RRC transparent box and send to RNS_S.
Step 207, RNS_S sends reconfiguration message to UE, and this message adopts the specified SRB of RB ID in the step 202 to transmit;
In this step, the SRB that may send reconfiguration message is SRB1 and SRB2.Reconfiguration message can be radio bearer reconfiguration message, transmission channel reconfiguration message or physical channel reconfiguration message.
Step 208, UE sends to reshuffle to RNS_T and finishes message;
So far, the SRNS of UE becomes RNS_T by RNS_S, provides service by RNS_T for UE.After this any time, then execution in step 212 if RNS_T will send first downlink signaling to UE.
Next, to carry out also between RNS_T and CN that some are mutual, to finish the SRNS reorientation at last.Be specially:
Step 209, RNS_T sends reorientation to CN and finishes message.
Step 210～211, CN sends the release command of Iu mouth to RNS_S, and RNS_S discharges the Iu mouth and returns Iu mouth Release complete and give CN.
So far, the SRNS reorientation is finished.
Step 212, RNS_T sends first downlink signaling to UE;
In this step, RNS_T receive UE reshuffle finish the message successful execution and switch after, when sending first descending SRB1 or SRB2 signaling, calculate RRC SN and COUNT-I according to the RB ID of storage in the step 204, utilize COUNT-I to calculate MAC-I again.
When the RB ID of storage in the step 204 represents SRB1, if destination sends the SRB1 signaling, (descending SRB1 SN+2) mod16 that is the source in the purpose RRC transparent box of the RRC SN in the downlink signaling then, COUNT-I are that the source moves to left 4 to the descending SRB1 HFN in the purpose RRC transparent box and adds descending SRB1 SN+2;
If destination sends the SRB2 signaling, (descending SRB2 SN+1) mod16 that is the source in the purpose RRC transparent box of the RRC SN in the downlink signaling then, COUNT-I are that the source moves to left 4 to the descending SRB2 HFN in the purpose RRC transparent box and adds descending SRB2 SN+1.
When the RB ID of storage in the step 204 represents SRB2, if destination sends the SRB1 signaling, (descending SRB1 SN+1) mod16 that is the source in the purpose RRC transparent box of the RRC SN in the downlink signaling then, COUNT-I are that the source moves to left 4 to the descending SRB1 HFN in the purpose RRC transparent box and adds descending SRB1 SN+1;
If destination sends the SRB2 signaling, (descending SRB2 SN+2) mod16 that is the source in the purpose RRC transparent box of the RRC SN in the downlink signaling then, COUNT-I are that the source moves to left 4 to the descending SRB2 HFN in the purpose RRC transparent box and adds descending SRB2 SN+2.
Adopt aforesaid way to calculate a field RRC SN of COUNT-I and integrity information; utilize COUNT-I to obtain another field MAC-I of integrity information again; like this; the downlink signaling that destination sends just can be by the integrity protection of UE; thereby guarantee the reliability of signaling transmission, improve professional service quality.
Embodiment two:
Fig. 5 is the workflow diagram of the SRNS method for relocating of the embodiment of the invention two.In the present embodiment, purpose is constructed according to whether can't harm reorientation to source RRC transparent box.The flow process of whole SRNS method for relocating comprises:
Step 501, UE sends measurement report to RNS_S, wherein comprises the down channel quality parameter of the neighbor cell that measures etc.
Step 502, RNS_S sends the reorientation preparation request to CN, comprises that in this request the source of carrying RB information is to purpose RRC transparent box;
In this step, the RNC among the RNS_S carries out switch decision, and the SRNS reorientation that UE participates in is initiated in decision.RNC comprises the RB information of source to UE transmission reconfiguration message when filling in " source is to purpose RRC transparent box ", in the present embodiment, this RB information is exactly RB ID, represents by this IF of RB identityfor Handover message IE.Because source only may adopt SRB1 or SRB2 to send when UE sends reconfiguration message, therefore the RB ID that carries here is SRB1 or SRB2.If this moment, integrity protection started; the source also further comprises descending RRC HFN and the descending RRC SN of each SRB in the purpose RRC transparent box; be specially descending SRB1 HFN and SRB1 SN; descending SRB2 HFN and SRB2 SN; descending SRB3 HFN and SRB3 SN, descending SRB4 IIFN and SRB4 SN.
Step 503, CN sends RELOCATION REQUEST message to RNS_T, wherein comprises from source that the RNS_S transparent transmission comes to purpose RRC transparent box.
Step 504, RNS_T storage HFN and SN, and RB ID to purpose RRC transparent box, judge whether can't harm reorientation according to the source, as if can't harm reorientation, then execution in step 505 and subsequent step thereof, otherwise execution in step 506 and subsequent step thereof;
In this step, after purpose RNC receives the RELOCATION REQUEST message of CN, descending SRB1 HFN and the SRB1 SN of storage source in the purpose RRC transparent box, descending SRB2 HFN and SRB2 SN, descending SRB3 HFN and SRB3 SN, and descending SRB4 HFN and SRB4 SN; Simultaneously, the RB ID that when UE sends reconfiguration message, adopts of the source that carries in the purpose RRC transparent box of storage source.
Step 505, source and destination are constructed purpose jointly to source RRC transparent box, and execution in step 507;
In this step, source and destination are constructed purpose to the idiographic flow of source RRC transparent box as shown in Figure 6 jointly, and this flow process comprises:
Step 505a, the body matter of RNS_T structure RRC message;
In this step, RNS_T to purpose RRC transparent box, selects suitable L1, L2 resource allocation to give UE according to the source that receives, constructs in the RRC message content about allocation of radio resources.
Step 505b, RNS_T sends re-positioning request to CN and replys, and carries the body matter of the RRC message of constructing among the step 505a during this is replied.
Step 505c, CN sends the reorientation order to RNS_S, carries the body matter of the next RRC message of RNS_T transparent transmission in this order.
Step 505d, RNS_S modified R RC message, calculation of integrity information is filled in the up PDCP sequence number that next expectation receives;
In this step, source RNC fills in the up PDCP sequence number that next expectation receives according to the up PDCP sequence number that self receives recently.Through this step process, can accurately fill in the up PDCP sequence number that next expectation receives, avoid the unnecessary uplink data re-transmission, can effectively improve system effectiveness.
So just finished the structure of purpose to source RRC transparent box.
Step 506, destination structure purpose sends to RNS_S to source RRC transparent box, and execution in step 507;
In this step, destination structure purpose is to source RRC transparent box and to send to the idiographic flow of RNS_S identical with flow process among the embodiment one, repeats no more here.
Step 507, RNS_S sends reconfiguration message to UE, and this message adopts the specified SRB of RB ID in the step 502 to transmit;
In this step, the SRB that may send reconfiguration message is SRB1 and SRB2.Reconfiguration message can be radio bearer reconfiguration message, transmission channel reconfiguration message or physical channel reconfiguration message.
Step 508, UE sends to reshuffle to RNS_T and finishes message;
So far, the SRNS of UE becomes RNS_T by RNS_S, provides service by RNS_T for UE.After this any time, then execution in step 512 if RNS_T will send first downlink signaling to UE.
Next, to carry out also between RNS_T and CN that some are mutual, to finish the SRNS reorientation at last.Be specially:
Step 509, RNS_T sends reorientation to CN and finishes message.
Step 510～511, CN sends the release command of Iu mouth to RNS_S, and RNS_S discharges the Iu mouth and returns Iu mouth Release complete and give CN.
So far, the SRNS reorientation is finished.
Step 512, RNS_T sends first downlink signaling to UE;
In this step, RNS_T receive UE reshuffle finish the message successful execution and switch after, when sending first descending SRB1 or SRB2 signaling, calculate RRC SN and COUNT-I according to the RB ID of storage in the step 504, utilize COUNT-I to calculate MAC-I again.
When the RB ID of storage in the step 504 represents SRB1, if destination sends the SRB1 signaling, (descending SRB1 SN+2) mod16 that is the source in the purpose RRC transparent box of the RRC SN in the downlink signaling then, COUNT-I are that the source moves to left 4 to the descending SRB1 HFN in the purpose RRC transparent box and adds descending SRB1 SN+2;
If destination sends the SRB2 signaling, (descending SRB2 SN+1) mod16 that is the source in the purpose RRC transparent box of the RRC SN in the downlink signaling then, COUNT-I are that the source moves to left 4 to the descending SRB2 HFN in the purpose RRC transparent box and adds descending SRB2 SN+1.
When the RB information representation SRB2 described in the step 504, if destination sends the SRB1 signaling, (descending SRB1 SN+1) mod16 that is the source in the purpose RRC transparent box of the RRC SN in the downlink signaling then, COUNT-I are that the source moves to left 4 to the descending SRB1 HFN in the purpose RRC transparent box and adds descending SRB1 SN+1;
If destination sends the SRB2 signaling, (descending SRB2 SN+2) mod16 that is the source in the purpose RRC transparent box of the RRC SN in the downlink signaling then, COUNT-I are that the source moves to left 4 to the descending SRB2 HFN in the purpose RRC transparent box and adds descending SRB2 SN+2.
Adopt aforesaid way to calculate a field RRC SN of COUNT-I and integrity information; utilize COUNT-I again; obtain another field MAC-I of integrity information by the f9 algorithm; like this; the downlink signaling that destination sends just can be by the integrity protection of UE, thereby guarantees the reliability that signaling is transmitted.
The difference of present embodiment and embodiment one is when selecting purpose to arrive the make of source RRC transparent box, the condition of selection is specially whether can't harm reorientation, and the subsequent treatment of bringing thus is also just different.
As seen from the above technical solution, the present invention sends the RB information of reconfiguration message by carry source in the purpose RRC transparent box in the source to UE, thereby which SRB notice destination source will adopt transmit reconfiguration message.Simultaneously, the destination of SRNS reorientation when filling in purpose to source RRC transparent box, independently selects to construct the mode of purpose to source RRC transparent box according to QoS of survice.Source sends reconfiguration message to source RRC transparent box to UE according to purpose again, and this message is transmitted on the SRB of source appointment in the purpose RRC transparent box.After switching is finished, when destination sends downlink signaling on SRB1 or SRB2, according to the RB information of storage, calculation of integrity information, the downlink signaling that sends of destination just can be by the integrity checking of UE like this, thereby improves the reliability that signaling data transmits, and improves service quality greatly.
Further, when the structure purpose arrives source RRC transparent box, can construct according to whether can't harm reorientation, when can't harm reorientation, by the body matter of purpose RNC structure RRC message, source RNC revises message on RRC message basis, comprises the up PDCP sequence number of filling in next expectation, calculation of integrity information sends corresponding RRC message then.Like this, when can't harm reorientation, can obtain the current sequence number of PDCP accurately, thereby correctly fill in the up PDCP sequence number of next expectation, improve the system signaling transmission quality, improve service quality greatly.
Being preferred embodiment of the present invention only below, is not to be used to limit protection scope of the present invention.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. a method for relocating service wireless network subsystem is characterized in that, this method comprises:
A, source arrive purpose RRC transparent box to destination transmission source, and comprise source sends RB information from reconfiguration message to UE therein;
B, according to the source to purpose RRC transparent box, the structure purpose is to source RRC transparent box;
C, source structure reconfiguration message, and on the SRB of the RB information appointment described in the step a, send reconfiguration message to UE, UE sends to reshuffle to destination and finishes message, finishes the SRNS reorientation;
D, destination are according to the RB information described in the step a, and structure also sends downlink signaling to UE.
2. method according to claim 1, it is characterized in that described in the step b is to arrive purpose RRC transparent box according to the source according to the source to source RRC transparent box to purpose RRC transparent box structure purpose, judge whether can't harm reorientation, arrive source RRC transparent box according to judged result structure purpose again.
3. method according to claim 2, it is characterized in that, described judged result is for can't harm reorientation, then described structure purpose to source RRC transparent box is: by the body matter of purpose radio network controller structure RRC message, and send to source radio network controller, source radio network controller is revised message on the basis of the RRC message body content of receiving, fills in the up PDCP sequence number that next expectation receives, and calculation of integrity information;
Described judged result is not for can't harm reorientation, and then described structure purpose to source RRC transparent box is: construct descending DCCH message by the purpose radio network controller, calculate integrity information in the message.
4. method according to claim 3 is characterized in that, when not can't harm reorientation, described calculation of integrity information is:
When the RB information representation SRB1 described in the step a, RRC SN (descending SRB1 SN+1) mod 16 that is the source in the purpose RRC transparent box then, COUNT-I be the source to the descending SRB1 HFN in the purpose RRC transparent box move to left 4 again with the result of descending SRB1 SN+1 addition, calculate the MAC-I field according to COUNT-I again;
When the RB information representation SRB2 described in the step a, RRC SN (descending SRB2 SN+1) mod 16 that is the source in the purpose RRC transparent box then, COUNT-I be the source to the descending SRB2 HFN in the purpose RRC transparent box move to left 4 again with the result of descending SRB2 SN+1 addition, calculate the MAC-I field according to COUNT-I again.
5. method according to claim 1 and 2 is characterized in that, the reconfiguration message described in the step c is: radio bearer reconfiguration message, transmission channel reconfiguration message or physical channel reconfiguration message.
6. method according to claim 1 and 2 is characterized in that, during RB information representation SRB1 described in the step a, the destination described in the steps d according to the RB information structuring downlink signaling described in the step a is:
If destination sends the SRB1 signaling, (descending SRB1 SN+2) mod 16 that is the source in the purpose RRC transparent box of the RRC SN in the downlink signaling then, COUNT-I are that the source moves to left 4 to the descending SRB1 HFN in the purpose RRC transparent box and adds descending SRB1 SN+2;
If destination sends the SRB2 signaling, (descending SRB2 SN+1) mod 16 that is the source in the purpose RRC transparent box of the RRC SN in the downlink signaling then, COUNT-I are that the source moves to left 4 to the descending SRB2 HFN in the purpose RRC transparent box and adds descending SRB2 SN+1.
7. method according to claim 1 and 2 is characterized in that, during RB information representation SRB2 described in the step a, the destination described in the steps d according to the RB information structuring downlink signaling described in the step a is:
If destination sends the SRB1 signaling, (descending SRB1 SN+1) mod 16 that is the source in the purpose RRC transparent box of the RRC SN in the downlink signaling then, COUNT-I are that the source moves to left 4 to the descending SRB1 HFN in the purpose RRC transparent box and adds descending SRB1 SN+1;
If destination sends the SRB2 signaling, (descending SRB2 SN+2) mod 16 that is the source in the purpose RRC transparent box of the RRC SN in the downlink signaling then, COUNT-I are that the source moves to left 4 to the descending SRB2 HFN in the purpose RRC transparent box and adds descending SRB2 SN+2.
8. method according to claim 1 and 2 is characterized in that, described RB information is RB ID.
9. method according to claim 8 is characterized in that, described RB ID is the radio bearer id field of the RRC message that is used to switch.
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101505513B (en) * | 2008-02-04 | 2011-01-05 | 中兴通讯股份有限公司 | Method for repositioning from high speed downlink packet access service to dedicated channel service |
| WO2011020440A1 (en) * | 2009-08-21 | 2011-02-24 | 中兴通讯股份有限公司 | Method, base station and terminal for drive test |
| CN102316455A (en) * | 2010-06-30 | 2012-01-11 | 中兴通讯股份有限公司 | Method and device for transmitting completeness protection parameters |
| CN103260204A (en) * | 2012-02-21 | 2013-08-21 | 鼎桥通信技术有限公司 | Method and device for controlling switching of wireless network controllers |
| WO2014161151A1 (en) * | 2013-04-02 | 2014-10-09 | Qualcomm Incorporated | Method and apparatus for avoiding call drops during serving radio network subsystem (srns) relocation procedure |
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| US11838849B2 (en) | 2011-07-29 | 2023-12-05 | Interdigital Patent Holdings, Inc. | Methods and apparatus for radio resources management in multi-radio access technology wireless systems |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101505513B (en) * | 2008-02-04 | 2011-01-05 | 中兴通讯股份有限公司 | Method for repositioning from high speed downlink packet access service to dedicated channel service |
| WO2011020440A1 (en) * | 2009-08-21 | 2011-02-24 | 中兴通讯股份有限公司 | Method, base station and terminal for drive test |
| CN102316455A (en) * | 2010-06-30 | 2012-01-11 | 中兴通讯股份有限公司 | Method and device for transmitting completeness protection parameters |
| US11871391B2 (en) | 2010-12-03 | 2024-01-09 | Interdigital Patent Holdings, Inc. | Methods, apparatus and systems for performing multi-radio access technology carrier aggregation |
| US11838849B2 (en) | 2011-07-29 | 2023-12-05 | Interdigital Patent Holdings, Inc. | Methods and apparatus for radio resources management in multi-radio access technology wireless systems |
| CN103260204A (en) * | 2012-02-21 | 2013-08-21 | 鼎桥通信技术有限公司 | Method and device for controlling switching of wireless network controllers |
| WO2014161151A1 (en) * | 2013-04-02 | 2014-10-09 | Qualcomm Incorporated | Method and apparatus for avoiding call drops during serving radio network subsystem (srns) relocation procedure |
| CN107371181A (en) * | 2016-05-13 | 2017-11-21 | 华为技术有限公司 | A kind of abnormal processing method of data link and wireless terminal |
| CN107371181B (en) * | 2016-05-13 | 2020-01-21 | 华为技术有限公司 | Method for processing data link abnormity and wireless terminal |
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