CN100490556C - Switching control method and system - Google Patents
Switching control method and system Download PDFInfo
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- CN100490556C CN100490556C CNB2006100745113A CN200610074511A CN100490556C CN 100490556 C CN100490556 C CN 100490556C CN B2006100745113 A CNB2006100745113 A CN B2006100745113A CN 200610074511 A CN200610074511 A CN 200610074511A CN 100490556 C CN100490556 C CN 100490556C
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Abstract
The invention relates to a switch control method and relative system, with confirmed property need of interruption time, wherein said method comprises that: 1, terminal sends/receives data pack at source region; 2, when completing sending/receiving, in interruption time, when terminal sends/receives data pack at target region, the switch is successful. The inventive system comprises: terminal used to send/receive data pack at source region and target region and switch; resource region controller for sending and receiving data pack before switching; target region controller for sending and receiving data pack after switching. The invention can give dataflow interruption position and interruption time, to improve the switch accuracy and flexibility.
Description
Technical field
The present invention relates to moving communicating field, relate in particular to a kind of method for handover control and system.
Background technology
For in 10 years futures or longer time, make the wireless access technology of 3rd Generation Partnership Project (3GPP:The 3rd Generation Partnership Project) still have very strong competitiveness, just need to consider the Long Term Evolution (LTE:Long TermEvolution) of 3GPP wireless access technology.The target of LTE is that one of exploitation has high data rate, the framework of the wireless access technology of features such as low-response time and optimum grouping access.Therefore, the pith of LTE comprises shorter response time, higher user data rate, bigger power system capacity and wider coverage and reduces expending of operator.
The general process that LTE switches is described as: when radio condition changes, terminal is measured adjacent sub-district, send measurement report then, network based measurement report makes a policy, and the notification target sub-district is carried out to switch and is prepared, network is sent out switching command and is given terminal then, indication switches to Target cell, at this moment, the terminal disconnection is connected with the cell-of-origin, begins to be synchronized to Target cell, synchronously, terminal informing network side is switched affirmation, and begins to send and receiving subscriber data on Target cell, and last cell-of-origin discharges resource.
In the LTE hand-off execution process, terminal disconnects earlier and being connected of cell-of-origin, and is synchronized to then after the Target cell, just begins to set up and being connected of Target cell.Therefore, owing to disconnect latter linked process earlier, cause terminal that data interruption takes place when receiving or sending data.Terminal is sending or is receiving last complete high-level business data cell (SDU:Service Data Unit) to being HO-break duration at the timing definition that sends on the Target cell or receive between first complete high-rise SDU on the cell-of-origin.
Because what system provided is professional different, the performance requirement of break period also exists certain difference.
A kind of handover scheme is in the prior art: define break period in the service of IP connectivity, subscriber equipment (UE:User Equipment) expectation is received next SDU and actual time of receiving between the next unduplicated SDU of UE.Different data forwarding methods is carried out performance evaluation, and supposition SDU transmission time interval is suitable with the switching time of implementation.Prior art one has following two kinds of methods:
The Bi-casting method: this method is after handoff preparation phase is set up being connected of Target cell and upper strata gateway, and packet is issued cell-of-origin and Target cell by gateway simultaneously, until UE sets up and being connected of Target cell.
As shown in Figure 1, for real time business, this technology proposes to add one times the SDU interval time of advent for switching the time of implementation maximum break period.
As shown in Figure 2, for non-real-time service, this technology propose maximum break period be switch the time of implementation add several times SDU time of advent at interval, be because receive the SDU of repetition SDU time of advent of several times at interval here.The SDU that receives is buffered in the Target cell.
The Forwarding method: this method is to set up the data tunnel of Target cell and cell-of-origin in handoff preparation phase, for real time business, after data forwarding is set up from the tunnel, for non-real-time service, data forwarding from the UE end-grain cutting change carry out beginning after, and only transmit UE and on the cell-of-origin, fail the SDU that receives.
As shown in Figure 3, for real time business, this technology proposes to add one times the SDU interval time of advent for switching the time of implementation maximum break period.
As shown in Figure 4, for non-real-time service: this technology proposes to equal to switch the time of implementation break period.
But, because this technology is imprecise to being provided with of interruption position, setting with break period is also improper simultaneously, cause this technology can only be based on switching the situation that time of implementation and the SDU interval time of advent (ISAT:InterSDU Arrival Time) are close, so this technology can not be as performance requirement to the result that break period of real time business, performance evaluation drew; In addition, because this technology is not considered the SDU of the repetition that may receive in the non-real-time service, so accuracy is not high.
In order to overcome the defective of first kind of prior art, another kind of scheme is in the prior art: to be break period UE receiving time between first DL MAC PDU receiving last down link medium access control layer protocol data cell (DL MAC PDU:Down Link Media Access Control Protocol Data Unit) on the cell-of-origin on the Target cell to UE in definition.Idiographic flow as shown in Figure 5.
But, the defective of using this scheme and then bringing is: at first because this technology is not considered break period according to type of service, so the accuracy of performance statistics break period is taked also can influence with a kind of break period in the shortage flexibility to different types of service;
Secondly, MAC PDU is used in this technology definition, and last the MAC PDU that receives on the cell-of-origin in fact here can not guarantee it is effectively, if this last MAC PDU is not effective, be the complete SDU that can not be reassembled as a high level so, further reduced accuracy.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of method for handover control and system, is used for original position and break period according to the interruption of actual conditions specified data stream, with the performance requirement of definite break period, thus the flow process that more accurate control is switched.
The inventive method comprises step: 1) set up the corresponding relation between break period and the type of service; 2) terminal is at cell-of-origin reception/transmission packet; 3) inquire about corresponding break period according to the type of service of current use; 4) after receiving/being sent completely, if terminal begins reception/transmission packet, then handover success on Target cell in described break period.
Preferably, definite process of described break period comprises: send the complete needed time in physical layer and determine break period according to switching the Service Data Unit SDU number that comprises in the time of implementation and SDU.
Preferably, definite process of described break period comprises: delay, forwarding delay, the hand-off execution process required time that disconnects according to network validation and terminal, receive the SDU required time that repeats and switch complete delay between first transmission block of terminal reception/transmission and determine break period.
Preferably, definite process of described break period comprises: delay, forwarding delay, the hand-off execution process required time that disconnects according to the interruption delay that switches original position, network validation and terminal, receive the SDU required time of repetition and switch complete delay between first transmission block of terminal reception/transmission and determine break period.
Preferably, definite process of described break period comprises: delay, forwarding delay, the hand-off execution process required time that disconnects according to network validation and terminal and switch complete back and determine break period to the delay between first transmission block of terminal reception/transmission.
Described step 2) and comprise step between the step 3) preferably:
21) terminal is carried out handoff procedure, and network validation disconnects with the while data that are connected of terminal to be transmitted;
22) terminal and Target cell carry out the exchange and the processing of signaling, or carry out retransmission process.
Preferably, be descending break period described break period, or up break period; Be meant that terminal begins to receive time between first effective transmission block in last terminal that finishes receiving that comprises effective transmission block of data on the down physical channel of cell-of-origin carrying data described descending break period on the down physical channel of Target cell carrying data; Be meant that terminal begins to send time between first effective transmission block in last terminal that is sent completely that comprises the effective transmission block of data on the uplink physical channel of cell-of-origin carrying data described up break period on the uplink physical channel of Target cell carrying data.
Preferably, described step 2) and step 21) between further comprise step:
A) terminal sends handoff request to the cell-of-origin;
B) cell-of-origin sends to switch to Target cell and prepares notice;
C) Target cell sends to switch to the cell-of-origin and prepares to confirm;
D) cell-of-origin receives described affirmation back and sends switching command to terminal.
System of the present invention comprises: terminal, be used for reception/transmission packet on cell-of-origin and Target cell, and according to the break period of present type of service inquiry correspondence, in described break period, switch; The cell-of-origin control unit is used for sending packet or receiving packet from terminal to terminal before switching; The Target cell control unit is used for sending packet or receiving packet from terminal to terminal after switching; Time is provided with the unit, is used to set up corresponding relation and storage between break period and the type of service.
Preferably, described terminal also is used to initiate handoff request; Described cell-of-origin control unit also is used for the handoff request of receiving terminal initiation and sends switching to the Target cell control unit preparing notice; Described Target cell control unit also is used for the switching of reception sources sub-district control unit transmission and prepares notice and finish to switch preparation.
Above technical scheme as can be seen, the present invention has the following advantages:
At first, because the definite starting and ending position that specified data of the present invention stream interrupts, in terms of existing technologies, the present invention has improved the accuracy of determining the HO-break duration performance requirement in the handoff procedure, helps switching flow is controlled accurately;
Secondly, because the present invention wanted earlier the employed business information of terminal use to be analyzed before determining to interrupt accurate location and HO-break duration, and determine the performance requirement of HO-break durations different under each situation according to corresponding relation, simultaneously, HO-break duration both can be descending break period, also can be up break period, more fully provide the HO-break duration performance requirement, thereby improve the accuracy of switching controls;
At last, because the present invention considers from the angle of SDU, for considering from the angle of MAC PDU in the prior art, guaranteed the validity of data, so further improved the accuracy of HO-break duration performance requirement, thereby also further improved the accuracy of control switching flow.
Description of drawings
Fig. 1 be in the prior art one the Bi-casting method to the process chart of real time business;
Fig. 2 be in the prior art one the Bi-casting method to the process chart of non-real-time service;
Fig. 3 be in the prior art one the Forwarding method to the process chart of real time business;
Fig. 4 be in the prior art one the Forwarding method to the process chart of non-real-time service;
Fig. 5 is a method flow diagram in the prior art two;
Fig. 6 is the inventive method main process figure;
Fig. 7 is the inventive method first embodiment flow chart;
Fig. 8 is the inventive method second embodiment flow chart;
Fig. 9 is a system body schematic diagram of the present invention;
Figure 10 is a system of the present invention detailed maps.
Embodiment
The present invention is applied to moving communicating field, is used for determining the original position and the break period of handoff procedure flow interruption, to determine the performance requirement of break period, controls the accuracy of switching thereby improve.
Main thought of the present invention is: when terminal after cell-of-origin reception/transmission packet, if in break period the beginning on Target cell reception/transmission packet, then handover success.
See also Fig. 6, the invention provides a kind of method for handover control, comprise step:
D1) terminal is at cell-of-origin reception/transmission packet;
D2) after receiving/being sent completely, if terminal begins reception/transmission packet, then handover success on Target cell in break period.
See also Fig. 9, system of the present invention comprises: terminal 100 is used on cell-of-origin and Target cell reception/transmission packet and switches; Cell-of-origin control unit 200 is used for sending packet or receiving packet from terminal to terminal before switching; Target cell control unit 300 is used for sending packet or receiving packet from terminal to terminal after switching.
See also Figure 10, described system also comprises: the time is provided with unit 400, is used to set up corresponding relation and storage between break period and the type of service.Described terminal 100 also is used to initiate handoff request; Described cell-of-origin control unit 200 also is used for the handoff request of receiving terminal initiation and sends switching to the Target cell control unit preparing notice; Described Target cell control unit 300 also is used for the switching of reception sources sub-district control unit transmission and prepares notice and finish to switch preparation.
Below in conjunction with specific embodiment technical solution of the present invention is described, sees also Fig. 7, present embodiment comprises step:
R1) terminal 100 sends to cell-of-origin control unit 200 with measurement report;
Wherein, when terminal 100 detected radio network conditions and changes, then terminal 100 sent to cell-of-origin control unit 200 with measurement report.
Wherein, it can be terminal 100 has been moved to the another one sub-district by the service coverage of a sub-district service coverage that described radio network conditions changes, it can also be the edge that terminal 100 is in the cell-of-origin service coverage, this moment, the cell-of-origin number of users was more, and the Target cell number of users is less, then for reaching equilibrium of stock, this terminal 100 can provide service for it by Target cell.
R2) cell-of-origin control unit 200 is made handover decisions after receiving measurement report;
R3) cell-of-origin control unit 200 sends to switch to Target cell control unit 300 and prepares notice, and asking it is that switching is ready;
R4) Target cell control unit 300 feedbacks are switched the preparation answer to cell-of-origin control unit 200;
R5) terminal 100 is at last effective transmission block of cell-of-origin control unit 200 transmission/receptions;
Wherein, transmission block is meant that effectively this transmission block can reformulate a complete and unduplicated high-rise SDU at receiving terminal.
R6) cell-of-origin control unit 200 receives that the switching preparation answer back that Target cell control unit 300 sends sends switching commands to terminal 100;
Wherein, terminal 100 disconnects behind the transmission block and being connected of cell-of-origin control unit 200 from sending/receiving.
R7) receive/send invalid transmission block;
R8) last transmission block of reception/transmission;
R9) terminal 100 begins to switch to Target cell;
Wherein, if terminal is failed in break period first effective transmission block of reception/transmission on Target cell, then switch abnormality processing.
Wherein, described switching abnormality processing can be the indication handoff failure and finish to switch, and returns the state before switching, and also can be to switch again automatically, can also be the mode of other abnormality processing.
Wherein, can be also can be descending break period described break period up break period;
Be meant that terminal begins to receive time between first effective transmission block in last terminal that finishes receiving that comprises effective transmission block of data on the down physical channel of cell-of-origin carrying data described descending break period on the down physical channel of Target cell carrying data.
Be meant that terminal begins to send time between first effective transmission block in last terminal that is sent completely that comprises the effective transmission block of data on the uplink physical channel of cell-of-origin carrying data described up break period on the uplink physical channel of Target cell carrying data.
Wherein, described break period T
InterruptBe the set time in the equipment of being solidificated in, it is following several that it determines that method has:
A, T
InterruptIt is definite to send the complete needed time by Service Data Unit SDU number that comprises in the switching time of implementation and SDU in physical layer.
Be T
Interrupt=N*T
SDUPerhaps T
Interrupt=(N-1) * T
SDU
Described T
SDUBe after high-level business data cell SDU is multiplexed with transmission block, on physical channel, send the complete needed time.
Described N is a maximum of switching the SDU number that comprises in the time of implementation.
B, T
InterruptDelay, forwarding delay, the hand-off execution process required time that disconnects by network validation and terminal, receive the SDU required time that repeats and switch complete delay to first transmission block of terminal reception/transmission definite.
Be T
Interrupt=MAX (T
Exec_Time, D
Forwarding+ D
Detect)+M*T
SDU+ D
IU
C, T
InterruptDelay, forwarding delay, the hand-off execution process required time that disconnects by the interruption delay that switches original position, network validation and terminal, receive the needed time of SDU that repeats and switch complete back definite to the delay first transmission block of terminal reception/transmission.
Be T
Interrupt=T
IU+ MAX (T
Exec_Time, D
Forwarding+ D
Detect)+M*T
SDU+ D
IU
D, T
InterruptNeeded time of delay, forwarding delay, hand-off execution process that disconnects by network validation and terminal and to switch complete back definite to the delay first transmission block of terminal 100 reception/transmissions.
Be T
Interrupt=MAX (T
Exec_Time, D
Forwarding+ D
Detect)+D
IU
Wherein, described T
IUBe owing to switch the uncertain interruption delay of execution initial point position, be T to the maximum
SDU
Described T
SDUBe after high-rise SDU is multiplexed with transmission block, on physical channel, send the complete needed time.
Described D
ForwardingIt is the network side data forward delay.
Described D
DetectIt is the delay that network validation and terminal disconnect.
Described T
Exec_TimeBe that terminal is switched the time of implementation.
Described MAX (T
Exec_Time, D
Forwarding+ D
Detect) expression gets T
Exec_Time(D
Forwarding+ D
Detect) maximum.
Described M is the number of the repetition SDU of terminal reception or transmission.
Described D
IUBe to switch complete back to the delay between first transmission block of terminal 100 reception/transmissions.
Described D
IUComprise the signaling retransmission delay, processing delay or retransmission delay etc.
Wherein, the method for above-mentioned definite HO-break duration is finished by providing the expression formula form in the present embodiment, is understandable that, can also finish by the method that the system emulation result provides constant numerical value equally.
R10) terminal 100 sends signaling to Target cell control unit 300;
Wherein, terminal 100 sends signalings to Target cell control unit 300 and shows and finish switching.
R11) produce delay;
Wherein, described delay comprises the signaling retransmission delay, processing delay or retransmission delay.
R12) beginning is mutual between Target cell control unit 300 and the terminal 100;
Wherein, terminal 100 begins first effective transmission block of transmission/reception.
R13) Target cell control unit 300 notification source sub-district control unit 200 finishing switching;
R14) discharge resource.
Wherein, cell-of-origin control unit 200 discharges the resource of distributing to terminal 100 after receiving the notification message of the finishing switching that Target cell control unit 300 sends.
Another one embodiment of the present invention is provided below, sees also Fig. 8, present embodiment comprises step:
S1) time is provided with unit 400 and sets up corresponding relation between break period and the type of service;
Wherein, the time is provided with unit 400 and can be integrated in terminal 100, also can be integrated in the cell-of-origin control unit 200, can also be integrated in other unit.
Wherein, can be also can be descending break period described break period up break period;
Be meant that terminal begins to receive time between first effective transmission block in last terminal that finishes receiving that comprises effective transmission block of data on the down physical channel of cell-of-origin carrying data described descending break period on the down physical channel of Target cell carrying data.
Be meant that terminal begins to send time between first effective transmission block in last terminal that is sent completely that comprises the effective transmission block of data on the uplink physical channel of cell-of-origin carrying data described up break period on the uplink physical channel of Target cell carrying data.
Wherein, the time is provided with unit 400 and sets up T break period
InterruptAnd the corresponding relation between the type of service, concrete method for building up is as follows:
1, if the current use of terminal be real time business, T then
InterruptIt is definite to send the complete needed time by Service Data Unit SDU number that comprises in the switching time of implementation and SDU in physical layer.
1a, if high level do not indicate chain of command and user's face Coordination Treatment, then
TInterrupt=N*T
SDU
1b, if high-rise indication chain of command and user's face Coordination Treatment, then T
Interrupt=(N-1) * T
SDU
Described T
SDUBe after high-level business data cell SDU is multiplexed with transmission block, on physical channel, send the complete needed time.
Described N is a maximum of switching the SDU number that comprises in the time of implementation.
2, if the current use of terminal be non-real-time service:
2a, if SDU be whole transmission:
2a1, if high level do not indicate chain of command and user's face Coordination Treatment, then T
InterruptDelay, forwarding delay, the hand-off execution process required time that disconnects by the interruption delay that switches original position, network validation and terminal, receive the needed time of SDU that repeats and switch complete back definite to the delay first transmission block of terminal reception/transmission:
Be T
Interrupt=T
IU+ MAX (T
Exec_Time, D
Forwarding+ D
Detect)+M*T
SDU+ D
IU
2a2, if high-rise indication chain of command and user's face Coordination Treatment, then T
InterruptDelay, forwarding delay, the hand-off execution process required time that disconnects by network validation and terminal, receive the needed time of SDU that repeats and switch complete back definite to the delay first transmission block of terminal:
Be T
Interrupt=MAX (T
Exec_Time, D
Forwarding+ D
Detect)+M*T
SDU+ D
IU
2b, if the SDU segmentation sends because data interruption do not receive fully, but last SDU segment information that receives of exchange between terminal 100 and the network, and the segmentation that only need retransmit the SDU that transmission is not successful.T then
InterruptBy the needed time of delay, forwarding delay, hand-off execution process that network validation and terminal disconnect, switch complete back and determine to the delay between first transmission block of terminal 100 reception/transmissions.
Be T
Interrupt=MAX (T
Exec_Time, D
Forwarding+ D
Detect)+D
IU
Wherein, described T
IUBe owing to switch the uncertain interruption delay of execution initial point position, be T to the maximum
SDU
Described T
SDUBe after high-rise SDU is multiplexed with transmission block, on physical channel, send the complete needed time.
Described D
ForwardingIt is the network side data forward delay.
Described D
DetectBe that network side detects the delay that is produced that is connected of losing with terminal.
Described T
Exec_TimeBe that terminal is switched the time of implementation.
Described MAX (T
Exec_Time, D
Forwarding+ D
Detect) expression gets T
Exec_Time(D
Forwarding+ D
Detect) maximum.
Described M is the number of the repetition SDU of terminal reception or transmission.
Described D
IUBe to switch complete back to the delay between first transmission block of terminal reception/transmission.
Described D
IUComprise the signaling retransmission delay, processing delay or retransmission delay etc.
Wherein, for non-real-time service,, then do not need to consider D if user's face uses gateway simultaneously to the method for cell-of-origin and Target cell transmission packet
ForwardingAnd D
Detect, MAX (T
Exec_Time, D
Forwarding+ D
Detect) can directly be expressed as T
Exec_Time
For non-real-time service, if specifying in the SDU that does not allow repetition in the non-real-time service, system QoS is received, so above-mentioned M is 0.
For non-real-time service, if system QoS has specified in the maximum that allows to receive the SDU that repeats in the non-real-time service, so above-mentioned M gets this maximum.
For non-real-time service, if last SDU sequence number that receives of exchange between terminal and the network, so above-mentioned M is 0.
Wherein, the method for above-mentioned definite HO-break duration is finished by providing the expression formula form in the present embodiment, is understandable that, can also finish by the method that the system emulation result provides constant numerical value equally.
Wherein, terminal 100 must be finished following operation in break period:
1, receives switching from the cell-of-origin and carry out preceding incomplete SDU segment transmissions piece;
2, network validation disconnects and being connected and the delay of data forwarding generation of terminal, or hand-off execution process;
3, switch complete after, terminal exchanges with Target cell signaling ground and the processing of signaling, or retransmission process;
4, receive the SDU segment transmissions piece that switches execution incomplete SDU segment transmissions piece in back or repetition from Target cell.
S2) terminal 100 sends to cell-of-origin control unit 200 with measurement report;
Wherein, when terminal 100 detected radio network conditions and changes, then terminal 100 sent to cell-of-origin control unit 200 with measurement report.
Wherein, it can be terminal 100 has been moved to the another one sub-district by the service coverage of a sub-district service coverage that described radio network conditions changes, it can also be the edge that terminal 100 is in the cell-of-origin service coverage, this moment, the cell-of-origin number of users was more, and the Target cell number of users is less, then for reaching equilibrium of stock, this terminal 100 can provide service for it by Target cell.
S3) cell-of-origin control unit 200 is made handover decisions after receiving measurement report;
S4) cell-of-origin control unit 200 sends to switch to Target cell control unit 300 and prepares notice, and asking it is that switching is ready;
S5) Target cell control unit 300 feedbacks are switched the preparation answer to cell-of-origin control unit 200;
S6) break period of inquiry correspondence;
Wherein, terminal 100 obtains corresponding break period according to the type of service inquiry corresponding relation of current use.
S7) terminal 100 is from last effective transmission block of cell-of-origin control unit 200 transmission/receptions;
Wherein, transmission block is meant that effectively this transmission block can reformulate a complete and unduplicated high-rise SDU at receiving terminal.
S8) cell-of-origin control unit 200 receives that the switching preparation answer back that Target cell control unit 300 sends sends switching commands to terminal 100;
Wherein, terminal 100 disconnects behind the transmission block and being connected of cell-of-origin control unit 200 from sending/receiving.
S9) receive/send invalid transmission block;
S10) last transmission block of reception/transmission;
S11) terminal 100 begins to switch to Target cell;
Wherein, terminal is failed in break period first effective transmission block of reception/transmission on Target cell, then switches abnormality processing.
Wherein, described switching abnormality processing can be the indication handoff failure and finish to switch, and returns the state before switching, and also can be to switch again automatically, can also be the mode of other abnormality processing.
S12) terminal 100 sends signaling to Target cell control unit 300;
Wherein, terminal 100 sends signalings to Target cell control unit 300 and shows and finish switching.
S13) produce delay;
Wherein, described delay comprises the signaling retransmission delay, processing delay or retransmission delay.
S14) beginning is mutual between Target cell control unit 300 and the terminal 100;
Wherein, terminal 100 begins first effective transmission block of transmission/reception.
S15) Target cell control unit 300 notification source sub-district control unit 200 finishing switching;
S16) discharge resource.
Wherein, cell-of-origin control unit 200 discharges the resource of distributing to terminal 100 after receiving the notification message of the finishing switching that Target cell control unit 300 sends.
In sum, when radio conditions change, terminal 100 is to cell-of-origin control unit 200 reporting measurement reports, control unit 200 notification target sub-district control units 300 in cell-of-origin switch preparation, after Target cell control unit 300 is finished the switching preparation, cell-of-origin control unit 200 sends switching command to terminal 100, terminal 100 is switched after receiving switching command, in break period, finish switching, otherwise handoff failure, then Target cell control unit 300 is to cell-of-origin control unit 200 transmission finishing switching message after finishing switching, and cell-of-origin control unit 200 discharges resources.
In the replacement scheme, can be before cell-of-origin control unit 200 reporting measurement reports in terminal 100, by the time unit 400 is set and sets up corresponding relation between break period and the type of service, at cell-of-origin control unit 200 before terminal 100 sends switching commands, type of service according to current use is provided with the break period that correspondence is inquired about in unit 400 in the time, and terminal 100 is according to finishing switching this break period.
See also Fig. 9 and Figure 10, handover control system provided by the invention comprises: terminal 100 is used on cell-of-origin and Target cell reception/transmission packet and switches; Cell-of-origin control unit 200 is used for sending packet or receiving packet from terminal to terminal before switching; Target cell control unit 300 is used for sending packet or receiving packet from terminal to terminal after switching.
Wherein, described system also comprises: the time is provided with unit 400, is used to set up corresponding relation and storage between break period and the type of service.
Wherein, described terminal 100 also is used to initiate handoff request; Described cell-of-origin control unit 200 also is used for the handoff request of receiving terminal initiation and sends switching to the Target cell control unit preparing notice; Described Target cell control unit 300 also is used for the switching of reception sources sub-district control unit transmission and prepares notice and finish to switch preparation.
When radio conditions change, terminal 100 is to cell-of-origin control unit 200 reporting measurement reports, cell-of-origin control unit 200 sends switching preparation notice to Target cell control unit 300 after receiving measurement report, feedback acknowledgment message is given cell-of-origin control unit 200 after Target cell control unit 300 is finished the switching preparation, cell-of-origin control unit 200 sends switching command to terminal 100 after receiving feedback message, terminal 100 is switched after receiving switching command, in break period, finish switching, otherwise handoff failure, then Target cell control unit 300 is to cell-of-origin control unit 200 transmission finishing switching message after finishing switching, and cell-of-origin control unit 200 discharges resources.
In the replacement scheme, can unit 400 be set by the time in terminal 100 before cell-of-origin control unit 200 reporting measurement reports and set up corresponding relation between break period and the type of service, finish switching preparation back feedback acknowledgment message at Target cell control unit 300 and in the time be set to the type of service according to current use after the cell-of-origin control unit 200 break period that correspondence is inquired about in unit 400, terminal 100 is according to finishing switching this break period.
In sum, when radio conditions change, terminal 100 is to cell-of-origin control unit 200 reporting measurement reports, cell-of-origin control unit 200 sends switching preparation notice to Target cell control unit 300 after receiving measurement report, feedback acknowledgment message is given cell-of-origin control unit 200 after Target cell control unit 300 is finished the switching preparation, cell-of-origin control unit 200 sends switching command to terminal 100 after receiving feedback message, terminal 100 is switched after receiving switching command, do not switch then handoff failure if in break period, finish, if in break period, finish switching, then Target cell control unit 300 sends finishing switching message to cell-of-origin control unit 200, and cell-of-origin control unit 200 discharges resource.
More than the method and system of a kind of switching controls provided by the present invention are described in detail, used specific case herein principle of the present invention and execution mode are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, the part that all can change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.
Claims (10)
1, a kind of method of switching controls is characterized in that, comprises step:
1) sets up corresponding relation between break period and the type of service;
2) terminal is at cell-of-origin reception/transmission packet;
3) inquire about corresponding break period according to the type of service of current use;
4) after receiving/being sent completely, if terminal begins reception/transmission packet, then handover success on Target cell in described break period.
2, the method for switching controls according to claim 1, it is characterized in that definite process of described break period comprises: send the complete needed time in physical layer and determine break period according to switching the Service Data Unit SDU number that comprises in the time of implementation and SDU.
3, the method for switching controls according to claim 1, it is characterized in that definite process of described break period comprises: delay, forwarding delay, the hand-off execution process required time that disconnects according to network validation and terminal, receive the SDU required time that repeats and switch complete delay between first transmission block of terminal reception/transmission and determine break period.
4, the method for switching controls according to claim 1, it is characterized in that definite process of described break period comprises: delay, forwarding delay, the hand-off execution process required time that disconnects according to the interruption delay that switches original position, network validation and terminal, receive the SDU required time of repetition and switch complete delay between first transmission block of terminal reception/transmission and determine break period.
5, the method for switching controls according to claim 1, it is characterized in that definite process of described break period comprises: delay, forwarding delay, the hand-off execution process required time that disconnects according to network validation and terminal and switch complete back and determine break period to the delay between first transmission block of terminal reception/transmission.
Described step 2) and comprise step between the step 3) 6, according to the method for each described switching controls in the claim 1 to 5, it is characterized in that::
21) terminal is carried out handoff procedure, and network disconnects transmits data simultaneously with being connected of terminal;
22) terminal and Target cell carry out the exchange and the processing of signaling, or retransmit.
7, the method for switching controls according to claim 6 is characterized in that: be descending break period described break period, or up break period;
Be meant that terminal begins to receive time between first effective transmission block in last terminal that finishes receiving that comprises effective transmission block of data on the down physical channel of cell-of-origin carrying data described descending break period on the down physical channel of Target cell carrying data;
Be meant that terminal begins to send time between first effective transmission block in last terminal that is sent completely that comprises the effective transmission block of data on the uplink physical channel of cell-of-origin carrying data described up break period on the uplink physical channel of Target cell carrying data.
8, the method for switching controls according to claim 7 is characterized in that, described step 2) and step 21) between further comprise step:
A) terminal sends handoff request to the cell-of-origin;
B) cell-of-origin sends to switch to Target cell and prepares notice;
C) Target cell sends to switch to the cell-of-origin and prepares to confirm;
D) cell-of-origin receives described affirmation back and sends switching command to terminal.
9, a kind of system of switching controls is characterized in that, comprising: terminal, be used for reception/transmission packet on cell-of-origin and Target cell, and according to the break period of present type of service inquiry correspondence, in described break period, switch; The cell-of-origin control unit is used for sending packet or receiving packet from terminal to terminal before switching; The Target cell control unit is used for sending packet or receiving packet from terminal to terminal after switching; Time is provided with the unit, is used to set up corresponding relation and storage between break period and the type of service.
10, the system of switching controls according to claim 9 is characterized in that, described terminal also is used to initiate handoff request; Described cell-of-origin control unit also is used for the handoff request of receiving terminal initiation and sends switching to the Target cell control unit preparing notice; Described Target cell control unit also is used for the switching of reception sources sub-district control unit transmission and prepares notice and finish to switch preparation.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100745113A CN100490556C (en) | 2006-04-21 | 2006-04-21 | Switching control method and system |
| PCT/CN2007/001309 WO2007124677A1 (en) | 2006-04-21 | 2007-04-20 | Method and device for switch controlling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100745113A CN100490556C (en) | 2006-04-21 | 2006-04-21 | Switching control method and system |
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| CN1968506A CN1968506A (en) | 2007-05-23 |
| CN100490556C true CN100490556C (en) | 2009-05-20 |
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| CNB2006100745113A Active CN100490556C (en) | 2006-04-21 | 2006-04-21 | Switching control method and system |
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| CN (1) | CN100490556C (en) |
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| US8681666B2 (en) * | 2007-10-01 | 2014-03-25 | Qualcomm Incorporated | Partial discarding of cyclic prefix for efficient TDD or half-duplex FDD operation |
| WO2014134789A1 (en) * | 2013-03-05 | 2014-09-12 | 华为技术有限公司 | Service interruption processing method and device thereof |
| CN117279116A (en) * | 2022-06-13 | 2023-12-22 | 华为技术有限公司 | Connection control method, device and system |
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2006
- 2006-04-21 CN CNB2006100745113A patent/CN100490556C/en active Active
Non-Patent Citations (2)
| Title |
|---|
| Feasibility Study for Evolved UTRA and UTRAN (Release 7). 3rd，Generation，Partnership，Project，，Technical，Specificationgroup，Radio，Access，Network.3GPP TR 25.912 V0.1.2. 2006 |
| Feasibility Study for Evolved UTRA and UTRAN (Release 7). 3rd，Generation，Partnership，Project，，Technical，Specificationgroup，Radio，Access，Network.3GPP TR 25.912 V0.1.2. 2006 * |
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| CN1968506A (en) | 2007-05-23 |
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