CN103139840A - Method, system, terminal and core network for reducing conversational service (CS) call drop rate - Google Patents

Method, system, terminal and core network for reducing conversational service (CS) call drop rate Download PDF

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CN103139840A
CN103139840A CN2011103980050A CN201110398005A CN103139840A CN 103139840 A CN103139840 A CN 103139840A CN 2011103980050 A CN2011103980050 A CN 2011103980050A CN 201110398005 A CN201110398005 A CN 201110398005A CN 103139840 A CN103139840 A CN 103139840A
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business
rnc
backoff timer
timer
service
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CN103139840B (en
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柯雅珠
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ZTE Corp
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ZTE Corp
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Abstract

The invention discloses a method for reducing a conversational service (CS) call drop rate. When a node B detects that a packet service (PS) data block transmitted by user equipment (UE) which is concurrent in the CS and the PS is abnormal, the node B notifies a radio network controller (RNC); the RNC performs statistics of a retransmission number of times of a radio link control (RLC) protocol data unit (PUD) which is not received and smallest in a serial number in an RLC hierarchy receiving window in the context of the UE; when the RNC judges the retransmission number of times of the RLC PDU reaches the maximum PDU retransmission number of times, an uplink reset timer is started; and when the uplink reset timer is overtime, the RNC releases the PS of the UE. The invention further discloses a system, a terminal and a core network for reducing the CS call drop rate at the same time. By means of the technical scheme, when an upstream of the PS produces an unrecoverable error, the PS can be treated in advance, so that the CS can stay in communication continuously.

Description

A kind of method, system, terminal and core net that reduces CS business cutting off rate
Technical field
The present invention relates to wireless communication technology, relate in particular to a kind of conversational service (CS, Conversational Service) and packet-type business (PS, Packet Service) reduce method, system, terminal and the core net of CS business cutting off rate when concurrent.
Background technology
Wideband Code Division Multiple Access (WCDMA) (WCDMA) mobile communication system is one and supports a subscriber equipment to carry out simultaneously the system of CS business and PS service call, but because the common data throughout of PS business is higher, therefore for same subscriber equipment (UE, User Equipment) CS business and PS business, the coverage of its business is different, also namely as UE only when doing the CS business, it is also extraordinary in cell edge service quality; If but CS business and the simultaneous words of PS business, because the existence in PS territory, and the coverage of PS business is less, the data network side in PS territory or UE side may exist certain probability can not correctly receive the PS business datum, thereby cause PS business generation Radio Link to control (RLC, Radio Link Control) unrecoverable error.
The 3GPP standard agreement is to be identified by radio network controller (RNC, Radio Network Controller) for descending RLC unrecoverable error at present, and up RLC unrecoverable error is to be identified by the UE side.For up direction, UE can change cell forward access channel (CELL_FACH) state over to after identifying, and sends the cell update message informing to network side by common signal channel.When CS business and PS service concurrence, if the descending RLC unrecoverable error that occured of PS business, RNC can discharge the PS business in advance and avoid causing CS business call drop because of the existence of PS business; If but the up RLC unrecoverable error that occured of PS business, UE will change the CELL_FACH state over to so, therefore will inevitably cause the call drop of CS business.And the common priority ratio of CS business is higher, and user's experience meeting is more responsive, and therefore, in the time of need to avoiding because of CS business and PS service concurrence, the covering problem of PS business causes the generation of CS business call drop situation.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of method, system, terminal and core net of the CS of reduction business cutting off rate, can occur in PS business up that RLC is irrecoverable to stagger the time, in advance the PS business processed, guarantee that the CS business continues to keep communication.
For achieving the above object, technical scheme of the present invention is achieved in that
Reduce the method for CS business cutting off rate when a kind of CS provided by the invention and PS are concurrent, the method comprises:
Node B monitors PS data block that the UE of CS and PS service concurrence sends when abnormal, notice RNC;
Do not receive and number the number of retransmissions of minimum rlc protocol data cell (PDU) in rlc layer receive window in the described UE context of RNC statistics;
When the number of retransmissions of the described RLC PDU of RNC judgement reaches maximum PDU number of retransmissions, horizontal reset timer in startup;
When upper horizontal reset timer expiry, RNC discharges the PS business of described UE.
In such scheme, the PS data block that described Node B monitors the UE transmission of CS and PS service concurrence is extremely:
When dedicated transmission channel (DCH) was upper, Node B detects described PS business from eating dishes without rice or wine PS data block had CRC (CRC) mistake when the PS service bearer;
When enhancing dedicated channel (E-DCH) was upper, Node B monitored the mixed automatic retransfer failed message of described PS business when the PS service bearer.
In such scheme, described notice RNC is:
When the PS service bearer was on the DCH channel, Node B was carried the FP frame of CRC sign (CRCI) to RNC by the transmission of IUB interface;
When the PS service bearer was on the E-DCH channel, Node B was carried the FP frame of mixed automatic retransfer failure Indication message to RNC by the transmission of IUB interface.
In such scheme, the method also comprises: before upper horizontal reset timer expiry, when RNC has received described RLC PDU, remove the upper horizontal reset timer of described RLC PDU.
In such scheme, after RNC discharged the PS business of described UE, the method also comprised:
RNC initiates radio bearer (RB) release message to UE, wherein carries the PS business and forbids the rollback timer (Backoff timer) of again initiating;
Accordingly, when UE received the RB release message that carries Backoff timer, described UE started described Backoff timer, does not allow to initiate the PS service request before described Backoff timer is overtime.
In such scheme, after RNC discharged the PS business of described UE, the method also comprised:
RNC initiates Iu mouth connection release message to core net, wherein carries the PS business and forbids the Backoff timer that again initiates;
Accordingly, when core net is received the Iu mouth connection release message that carries Backoff timer, described core net starts described Backoff timer immediately, does not allow UE to initiate the PS service request in the overtime front core net of described Backoff timer, does not also initiate PS territory paging request to UE.
Reduce the system of CS business cutting off rate when a kind of CS provided by the invention and PS service concurrence, this system comprises: Node B, RNC; Wherein,
Node B is used for monitoring PS data block that the UE of CS and PS service concurrence sends when abnormal, notice RNC;
RNC is for not receiving and number the number of retransmissions of minimum RLC PDU in the rlc layer receive window of adding up described UE context; When the number of retransmissions that judges described RLC PDU reaches maximum PDU number of retransmissions, horizontal reset timer in startup; When described upper horizontal reset timer expiry, discharge the PS business of described UE.
In such scheme, described RNC also is used for initiating the RB release message to UE, wherein carries the PS business and forbids the Backoff timer that again initiates.
In such scheme, this system also comprises: UE, when being used for receiving the RB release message that carries Backoff timer, start described Backoff timer, and do not allow to initiate the PS service request before described Backoff timer is overtime.
In such scheme, described RNC also is used for initiating Iu mouth connection release message to core net, wherein carries the PS business and forbids the Backoff timer that again initiates.
In such scheme, this system also comprises: core net when being used for receiving the Iu mouth connection release message that carries Backoff timer, starts described Backoff timer, do not allow UE to initiate the PS service request before described Backoff timer is overtime, do not initiate PS territory paging request to UE yet.
Reduce the UE of CS business cutting off rate when a kind of CS provided by the invention and PS service concurrence, this UE comprises: the first message sink module, the first start by set date module, the first inhibition request module; Wherein,
The first message sink module is used for reception and carries the RB release message of Backoff timer, and notifies the first start by set date module;
The first start by set date module is used for starting described Backoff timer according to the notice of the first message sink module;
The first inhibition request module is used for not allowing to initiate the PS service request before described Backoff timer is overtime.
In such scheme, this UE also comprises: the first monitoring modular, be used for discharging when monitoring the CS business, and Backoff timer removes described Backoff timer when having started.
Reduce the core net of CS business cutting off rate when a kind of CS provided by the invention and PS service concurrence, this core net comprises: the second message sink module, the second start by set date module, the second inhibition request module; Wherein,
The second message sink module is used for reception and carries the Iu mouth connection release message of Backoff timer, and notifies the second start by set date module;
The second start by set date module is used for starting described Backoff timer according to the notice of the second message sink module;
The second inhibition request module is used for not allowing UE to initiate the PS service request before described Backoff timer is overtime, does not also initiate PS territory paging request to UE.
In such scheme, this core net also comprises: the second monitoring modular, be used for discharging when monitoring the CS business, and Backoff timer removes described Backoff timer when having started.
The invention provides a kind of method, system, terminal and core net of the CS of reduction business cutting off rate, when Node B (NodeB) monitors PS data block that the UE of CS and PS service concurrence sends when abnormal, notice RNC; Do not receive and number the number of retransmissions of minimum rlc protocol data cell (PDU, Protocal Data Unit) in rlc layer receive window in the described UE context of described RNC statistics; When the number of retransmissions of the described RLC PDU of RNC judgement reaches maximum PDU number of retransmissions, horizontal reset timer in startup; Horizontal reset timer expiry on described, RNC discharges the PS business of described UE; So, can occur in PS business up that RLC is irrecoverable to stagger the time, in advance the PS business processed, guarantee that the CS business continues to keep communication.
Description of drawings
Fig. 1 is the schematic flow sheet that the present invention reduces the method for CS business cutting off rate when realizing CS and PS service concurrence;
Fig. 2 is the structural representation that the present invention reduces the system of CS business cutting off rate when realizing CS and PS service concurrence;
Fig. 3 is that the embodiment of the present invention one reduces the schematic flow sheet of the method for CS cutting off rate when realizing CS business and PS service concurrence;
Fig. 4 be the embodiment of the present invention two realize UE receive the RB release message after and the schematic flow sheet of the processing that do not discharge of follow-up CS business;
Fig. 5 be the embodiment of the present invention three realize UE receive the RB release message after and the schematic flow sheet of the processing that also discharges of follow-up CS;
Fig. 6 be the embodiment of the present invention four realize core net receive Iu mouth connection release message after and the schematic flow sheet of the processing that do not discharge of follow-up CS;
Fig. 7 be the embodiment of the present invention five realize core net receive Iu mouth connection release message after and the schematic flow sheet of the processing that also discharges of follow-up CS;
Fig. 8 is that the embodiment of the present invention six reduces the schematic flow sheet of the method for CS cutting off rate when realizing CS business and PS service concurrence;
Fig. 9 is that the embodiment of the present invention seven reduces the schematic flow sheet of the method for CS cutting off rate when realizing CS business and PS service concurrence.
Embodiment
Basic thought of the present invention is: when Node B monitors PS data block that the UE of CS and PS service concurrence sends when abnormal, notice RNC; Do not receive and number the number of retransmissions of minimum rlc protocol data cell (PDU, Protocal Data Unit) in rlc layer receive window in the described UE context of described RNC statistics; When the number of retransmissions of the described RLC PDU of RNC judgement reaches maximum PDU number of retransmissions, horizontal reset timer in startup; When described upper horizontal reset timer expiry, RNC discharges the PS business of described UE.
The present invention is described in further detail below by drawings and the specific embodiments.
Reduce the method for CS business cutting off rate when the present invention realizes a kind of CS and PS service concurrence, as shown in Figure 1, the method comprises following step:
Step 101: Node B monitors PS data block that the UE of CS and PS service concurrence sends when abnormal, notice RNC;
In this step, described Node B monitors abnormal general the referring to of PS data block that the UE of CS and PS service concurrence sends: when the PS service bearer at dedicated transmission channel (DCH, Dedicated Channel) in the time of on, Node B detects described PS business from eating dishes without rice or wine PS data block has CRC (CRC, Cyclical Redundancy Check) mistake; When enhancing dedicated channel (E-DCH, Enhanced Dedicated Channel) was upper, Node B monitored the mixed automatic retransfer failed message (HARQ Failure) of described PS business when the PS service bearer;
Described notice RNC is specially: when the PS service bearer was on the DCH channel, Node B was carried FP (Frame Protocol) frame of CRC sign (CRCI) to RNC by the transmission of IUB interface; When the PS service bearer was on the E-DCH channel, Node B was carried the FP frame of mixed automatic retransfer failure Indication message (HARQ Failure Indication) to RNC by the transmission of IUB interface.
Do not receive and number the number of retransmissions of minimum RLC PDU in rlc layer receive window in the described UE context of step 102:RNC statistics;
Concrete, after RNC receives the notice of Node B at every turn, the number of retransmissions of not receiving and number minimum RLC PDU in the rlc layer receive window in described UE context is added 1.
When the number of retransmissions of the described RLC PDU of step 103:RNC judgement reaches maximum PDU number of retransmissions, horizontal reset timer in startup;
In this step, described maximum PDU number of retransmissions is predefined, and the PS business that is carried on the DCH channel can be different with the corresponding maximum PDU number of retransmissions of PS business that is carried on the E-DCH channel;
The duration of described upper horizontal reset timer is predefined, and the PS business that is carried on the DCH channel can be different with the duration that is carried on the corresponding upper horizontal reset timer of PS business of E-DCH channel.
Step 104: when upper horizontal reset timer expiry, RNC discharges the PS business of described UE;
This step also comprises: before upper horizontal reset timer expiry, if RNC has received described RLCPDU, remove the upper horizontal reset timer of described RLC PDU, this processing procedure finishes.
Further, after discharging for fear of the PS business, initiate again immediately the business in PS territory and set up process, cause the increase of signaling traffic load, this step also comprises:
RNC initiates radio bearer (RB) release message to UE, wherein carries the PS business and forbids the rollback timer (Backoff timer) of again initiating, and Backoff timer duration is pre-defined;
Accordingly, when UE received the RB release message that carries Backoff timer, described UE started described Backoff timer immediately, did not allow to initiate the PS service request before described Backoff timer is overtime;
This step further comprises: RNC initiates Iu mouth connection release message to core net, wherein carries the PS business and forbids the Backoff timer that again initiates, and Backoff timer duration is pre-defined;
Accordingly, when core net is received the Iu mouth connection release message that carries Backoff timer, described core net starts described Backoff timer immediately, does not allow UE to initiate the PS service request in the overtime front core net of described Backoff timer, does not also initiate PS territory paging request to UE;
Further, discharge when UE monitors the CS business, and Backoff timer has been when having started, UE removes described Backoff timer;
Further, discharge when core net monitors the CS business, and Backoff timer has been when having started, core net is removed described Backoff timer.
In order to realize said method, when also providing a kind of CS and PS service concurrence, the present invention reduces the system of CS business cutting off rate, and as shown in Figure 2, this system comprises: Node B 21, RNC 22; Wherein,
Node B 21 is used for monitoring PS data block that the UE 23 of CS and PS service concurrence sends when abnormal, notice RNC 22;
RNC 22, for not receiving and number the number of retransmissions of minimum RLC PDU in the rlc layer receive window of adding up described UE 23 contexts; When the number of retransmissions that judges described RLC PDU reaches maximum PDU number of retransmissions, horizontal reset timer in startup; When described upper horizontal reset timer expiry, discharge the PS business of described UE 23.
Described Node B 21, concrete being used for when the PS service bearer is on DCH, the PS data block that described PS business detected from eating dishes without rice or wine has CRC wrong, sends by the IUB interface and carries the FP frame of CRCI to RNC22;
Described Node B 21, concrete being used for monitors the mixed automatic retransfer failed message of described PS business when the PS service bearer is on E-DCH, carry the FP frame of mixed automatic retransfer failure Indication message to RNC 22 by the transmission of IUB interface;
Described RNC 22, concrete for after receiving the notice of Node B 21 at every turn, the number of retransmissions of not receiving and number minimum RLC PDU in the rlc layer receive window in described UE 23 contexts is added 1;
Described RNC 22 also is used for initiating the RB release messages to UE 23, wherein carries the PS business and forbids the Backoff timer that again initiates;
This system also comprises: UE 23, when being used for receiving the RB release message that carries Backoff timer, start described Backoff timer, do not allow to initiate the PS service request before described Backoff timer is overtime;
Described UE 23 specifically comprises: the first message sink module 231, the first start by set date module 232, the first inhibition request module 233; Wherein,
The first message sink module 231 is used for reception and carries the RB release message of Backoff timer, and notifies the first start by set date module 232;
The first start by set date module 232 is used for starting described Backoff timer according to the notice of the first message sink module 231;
The first inhibition request module 233 is used for not allowing to initiate the PS service request before described Backoff timer is overtime;
Described UE 23 also comprises: the first monitoring modular 234, be used for discharging when monitoring the CS business, and Backoff timer removes described Backoff timer when having started.
Described RNC 22 also is used for initiating Iu mouth connection release messages to core net 24, wherein carries the PS business and forbids the Backoff timer that again initiates;
This system also comprises: core net 24, when being used for receiving the Iu mouth connection release message that carries Backoff timer, start described Backoff timer, do not allow UE 23 to initiate the PS service request before described Backoff timer is overtime, also do not initiate PS territory paging request to UE 23;
Described core net 24 specifically comprises: the second message sink module 241, the second start by set date module 242, the second inhibition request module 243; Wherein,
The second message sink module 241 is used for reception and carries the Iu mouth connection release message of Backoff timer, and notifies the second start by set date module 242;
The second start by set date module 242 is used for starting described Backoff timer according to the notice of the second message sink module 241;
The second inhibition request module 243 is used for not allowing UE 23 to initiate the PS service request before described Backoff timer is overtime, does not also initiate PS territory paging request to UE 23;
Described core net 24 also comprises: the second monitoring modular 244, be used for discharging when monitoring the CS business, and Backoff timer removes described Backoff timer when having started.
Based on said system, when also providing a kind of CS and PS service concurrence, the present invention reduces the UE of CS business cutting off rate, and as shown in Figure 2, described UE 23 comprises: the first message sink module 231, the first start by set date module 232, the first inhibition request module 233; Wherein,
The first message sink module 231 is used for reception and carries the RB release message of Backoff timer, and notifies the first start by set date module 232;
The first start by set date module 232 is used for starting described Backoff timer according to the notice of the first message sink module 231;
The first inhibition request module 233 is used for not allowing to initiate the PS service request before described Backoff timer is overtime;
Described UE 23 also comprises: the first monitoring modular 234, be used for discharging when monitoring the CS business, and Backoff timer removes described Backoff timer when having started.
Based on said system, when also providing a kind of CS and PS service concurrence, the present invention reduces the core net of CS business cutting off rate, as shown in Figure 2, described core net 24 comprises: the second message sink module 241, the second start by set date module 242, the second inhibition request module 243; Wherein,
The second message sink module 241 is used for reception and carries the Iu mouth connection release message of Backoff timer, and notifies the second start by set date module 242;
The second start by set date module 242 is used for starting described Backoff timer according to the notice of the second message sink module 241;
The second inhibition request module 243 is used for not allowing UE 23 to initiate the PS service request before described Backoff timer is overtime, does not also initiate PS territory paging request to UE 23;
Described core net 24 also comprises: the second monitoring modular 244, be used for discharging when monitoring the CS business, and Backoff timer removes described Backoff timer when having started.
Describe implementation procedure and the principle of method of the present invention in detail below in conjunction with specific embodiment.
Embodiment one
In the present embodiment, UE carries out CS business and PS business just at the same time, CS business and PS business all are mapped on the DCH channel, DCH channel and E-DCH channel configuration have been distinguished: upper horizontal reset timer (UL_Rest_Timer_DCH) timing length of DCH channel 6 seconds, upper horizontal reset timer (UL_Rest_Timer_E-DCH) timing length of E-DCH channel 4 seconds.Reduce the method for CS cutting off rate when the present embodiment is realized a kind of CS business and PS service concurrence, as shown in Figure 3, the method comprises following step:
Step 201: the PS data block CRC that Node B monitors the UE transmission staggers the time, and sends by the IUB interface and carries the FP frame of CRCI to RNC;
Step 202:RNC receives the FP frame that carries CRCI, monitors to be numbered 2 RLC PDU in the rlc layer receive window in the UE context and not receive and number hour, and the number of retransmissions of described RLC PDU is added 1;
Step 203:RNC judges whether the number of retransmissions of described RLC PDU reaches maximum PDU number of retransmissions, if so, starts upper horizontal reset timer (UL_Rest_Timer_DCH), execution in step 204; Otherwise execution in step 201;
Whether then step 204:RNC judges UL_Rest_Timer_DCH, and if so, RNC discharges the PS business of described UE, but CS territory business still keeps, execution in step 205; Otherwise execution in step 201;
Step 205:RNC sends the RB release message to UE, wherein carries the PS business and forbids the Backoff timer that again initiates;
The timer of Backoff described in this step timing is 10 seconds.
Step 206:RNC sends Iu mouth connection release message to core net, wherein carries the PS business and forbids the Backoff timer that again initiates;
The timer of Backoff described in this step timing is 10 seconds.
Embodiment two
After the present embodiment is described UE and received the RB release message and the processing procedure that do not discharge of follow-up CS business, as shown in Figure 4, comprising:
Step 301:UE receives the RB release message that carries Backoff timer;
Step 302:UE starts described Backoff timer;
Step 303:UE has the PS business to send demand, monitors Back offtimer and starts, and does not initiate the PS service call request to network side;
It is overtime that step 304:UE monitors Back offtimer, initiates the PS service call request to network side.
Embodiment three
After the present embodiment is described UE and received the RB release message and the processing procedure that also discharges of follow-up CS, as shown in Figure 5, comprising:
Step 401:UE receives the RB release message that carries Backoff timer;
Step 402:UE starts described Backoff timer;
Step 403:UE monitors CS territory business release, removes Back off timer;
Step 404:UE has monitored the PS business and has sent demand, and monitors Back off timer and do not start, and initiates the PS service call request to network side.
Embodiment four
After the present embodiment is described core net and received Iu mouth connection release message and the processing procedure that do not discharge of follow-up CS, as shown in Figure 6, comprising:
Step 501: core net is received the Iu mouth connection release message that carries Backoff timer;
Step 502: core net starts described Backoff timer;
Step 503: core net has monitored the PS business and has sent to UE, and monitors Backoff timer and start, and does not initiate paging request to described UE;
Step 504: it is overtime that core net monitors Back off timer, initiates the request of PS service paging to described UE.
Embodiment five
After the present embodiment is described core net and received Iu mouth connection release message and the processing procedure that also discharges of follow-up CS, as shown in Figure 7, comprising:
Step 601: core net is received the Iu mouth connection release message that carries Backoff timer;
Step 602: core net starts Backoff timer;
Step 603: core net monitors CS territory business release, removes described Back off timer;
Step 604: core net has monitored the PS business and has sent to UE, and monitors Back off timer and do not start, and initiates the request of PS service paging to described UE.
Embodiment six
In the present embodiment, UE carries out CS business and PS business just at the same time, CS business and PS business all are mapped on the E-DCH channel, DCH channel and E-DCH channel configuration have been distinguished: upper horizontal reset timer (UL_Rest_Timer_DCH) timing length of DCH channel 6 seconds, upper horizontal reset timer (UL_Rest_Timer_E-DCH) timing length of E-DCH channel 4 seconds.Reduce the method for CS cutting off rate when the present embodiment is realized a kind of CS business and PS service concurrence, as shown in Figure 8, the method comprises following step:
Step 701: Node B monitors the mixed automatic retransfer failed message of PS business, initiates mixed automatic retransfer failure Indication message to RNC;
After step 702:RNC receives mixed automatic retransfer failure Indication message, monitor and be numbered 5 RLC PDU in the rlc layer receive window in the UE context and do not receive and number minimum, the number of retransmissions of described RLCPDU is added 1;
Step 703:RNC judges whether the number of retransmissions of described RLC PDU reaches maximum PDU number of retransmissions, if so, starts upper horizontal reset timer (UL_Rest_Timer_E-DCH), execution in step 704; Otherwise execution in step 701;
Whether then step 704:RNC judges UL_Rest_Timer_E-DCH, and if so, RNC discharges the PS business of described UE, but CS territory business still keeps, execution in step 705; Otherwise execution in step 701;
Step 705:RNC sends the RB release message to UE, wherein carries the PS business and forbids the Backoff timer that again initiates;
Step 706:RNC sends Iu mouth connection release message to core net, wherein carries the PS business and forbids the Backoff timer that again initiates.
Embodiment seven
In the present embodiment, UE carries out CS business and PS business just at the same time, CS business and PS business all are mapped on the E-DCH channel, DCH channel and E-DCH channel configuration have been distinguished: upper horizontal reset timer (UL_Rest_Timer_DCH) timing length of DCH channel 6 seconds, upper horizontal reset timer (UL_Rest_Timer_E-DCH) timing length of E-DCH channel 4 seconds.Reduce the method for CS cutting off rate when the present embodiment is realized a kind of CS business and PS service concurrence, as shown in Figure 9, the method comprises following step:
Step 801: Node B monitors the mixed automatic retransfer failed message of PS business, initiates mixed automatic retransfer failure Indication message to RNC;
After step 802:RNC receives mixed automatic retransfer failure Indication message, monitor and be numbered 6 RLC PDU in the rlc layer receive window in the UE context and do not receive and number minimum, the number of retransmissions of described RLC PDU is added 1;
Step 803:RNC judges whether the number of retransmissions of described RLC PDU reaches maximum PDU number of retransmissions, if so, starts upper horizontal reset timer (UL_Rest_Timer_E-DCH), execution in step 804; Otherwise execution in step 801;
Whether then step 804:RNC judges UL_Rest_Timer_E-DCH, and if so, RNC discharges the PS business of described UE, but CS territory business still keeps, execution in step 805; Otherwise execution in step 801;
Step 805:RNC sends the RB release message to UE, wherein carries the PS business and forbids the Backoff timer that again initiates;
Step 806:RNC sends Iu mouth connection release message to core net, wherein carries the PS business and forbids the Backoff timer that again initiates.
The above is only preferred embodiment of the present invention, is not for limiting protection scope of the present invention.

Claims (15)

1. reduce the method for CS business cutting off rate when a conversational service (CS) and packet-type business (PS) are concurrent, it is characterized in that, the method comprises:
Node B monitors PS data block that the subscriber equipment (UE) of CS and PS service concurrence sends when abnormal, notice radio network controller (RNC);
Radio Link in the described UE context of RNC statistics is controlled the number of retransmissions of not receiving and number minimum rlc protocol data cell (PDU) in (RLC) layer receive window;
When the number of retransmissions of the described RLC PDU of RNC judgement reaches maximum PDU number of retransmissions, horizontal reset timer in startup;
When upper horizontal reset timer expiry, RNC discharges the PS business of described UE.
2. method according to claim 1, is characterized in that, the PS data block that described Node B monitors the UE transmission of CS and PS service concurrence is extremely:
When dedicated transmission channel (DCH) was upper, Node B detects described PS business from eating dishes without rice or wine PS data block had CRC (CRC) mistake when the PS service bearer;
When enhancing dedicated channel (E-DCH) was upper, Node B monitored the mixed automatic retransfer failed message of described PS business when the PS service bearer.
3. method according to claim 2, is characterized in that, described notice RNC is:
When the PS service bearer was on the DCH channel, Node B was carried the FP frame of CRC sign (CRCI) to RNC by the transmission of IUB interface;
When the PS service bearer was on the E-DCH channel, Node B was carried the FP frame of mixed automatic retransfer failure Indication message to RNC by the transmission of IUB interface.
4. method according to claim 1, is characterized in that, the method also comprises: before upper horizontal reset timer expiry, when RNC has received described RLC PDU, remove the upper horizontal reset timer of described RLC PDU.
5. method according to claim 1, is characterized in that, after RNC discharged the PS business of described UE, the method also comprised:
RNC initiates radio bearer (RB) release message to UE, wherein carries the PS business and forbids the rollback timer (Backoff timer) of again initiating;
Accordingly, when UE received the RB release message that carries Backoff timer, described UE started described Backoff timer, does not allow to initiate the PS service request before described Backoff timer is overtime.
6. method according to claim 1, is characterized in that, after RNC discharged the PS business of described UE, the method also comprised:
RNC initiates Iu mouth connection release message to core net, wherein carries the PS business and forbids the Backoff timer that again initiates;
Accordingly, when core net is received the Iu mouth connection release message that carries Backoff timer, described core net starts described Backoff timer immediately, does not allow UE to initiate the PS service request in the overtime front core net of described Backoff timer, does not also initiate PS territory paging request to UE.
7. reduce the system of CS business cutting off rate when a CS and PS service concurrence, it is characterized in that, this system comprises: Node B, RNC; Wherein,
Node B is used for monitoring PS data block that the UE of CS and PS service concurrence sends when abnormal, notice RNC;
RNC is for not receiving and number the number of retransmissions of minimum RLC PDU in the rlc layer receive window of adding up described UE context; When the number of retransmissions that judges described RLC PDU reaches maximum PDU number of retransmissions, horizontal reset timer in startup; When described upper horizontal reset timer expiry, discharge the PS business of described UE.
8. system according to claim 7, is characterized in that, described RNC also is used for initiating the RB release message to UE, wherein carries the PS business and forbid the Backoff timer that again initiates.
9. system according to claim 8, it is characterized in that, this system also comprises: UE, when being used for receiving the RB release message that carries Backoff timer, start described Backoff timer, do not allow to initiate the PS service request before described Backoff timer is overtime.
10. system according to claim 7, is characterized in that, described RNC also is used for initiating Iu mouth connection release message to core net, wherein carries the PS business and forbid the Backoff timer that again initiates.
11. system according to claim 10, it is characterized in that, this system also comprises: core net, when being used for receiving the Iu mouth connection release message that carries Backoff timer, start described Backoff timer, do not allow UE to initiate the PS service request before described Backoff timer is overtime, do not initiate PS territory paging request to UE yet.
12. reduce the UE of CS business cutting off rate when a CS and PS service concurrence, it is characterized in that, this UE comprises: the first message sink module, the first start by set date module, the first inhibition request module; Wherein,
The first message sink module is used for reception and carries the RB release message of Backoff timer, and notifies the first start by set date module;
The first start by set date module is used for starting described Backoff timer according to the notice of the first message sink module;
The first inhibition request module is used for not allowing to initiate the PS service request before described Backoff timer is overtime.
13. UE according to claim 12 is characterized in that, this UE also comprises: the first monitoring modular, be used for discharging when monitoring the CS business, and Backoff timer removes described Backoff timer when having started.
14. reduce the core net of CS business cutting off rate when a CS and PS service concurrence, it is characterized in that, this core net comprises: the second message sink module, the second start by set date module, the second inhibition request module; Wherein,
The second message sink module is used for reception and carries the Iu mouth connection release message of Backoff timer, and notifies the second start by set date module;
The second start by set date module is used for starting described Backoff timer according to the notice of the second message sink module;
The second inhibition request module is used for not allowing UE to initiate the PS service request before described Backoff timer is overtime, does not also initiate PS territory paging request to UE.
15. core net according to claim 14 is characterized in that, this core net also comprises: the second monitoring modular, be used for discharging when monitoring the CS business, and Backoff timer removes described Backoff timer when having started.
CN201110398005.0A 2011-12-05 2011-12-05 A kind of method, system for reducing CS business cutting off rates Expired - Fee Related CN103139840B (en)

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