CN101197612B - Method and device for computing activation time - Google Patents
Method and device for computing activation time Download PDFInfo
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Abstract
This invention discloses a method for computing activation time, which comprises the following steps of: prestoring the correlation parameter of radio bearer business and the lengths of transmission blocks of various signalings, which is based on different statuses of user equipment UE, computing the length of the information to be transmitted according to the related parameter and gaining the length of TB block according to the status of UE and signaling type in the process of activating a radio bearer, dividing the information to be transmitted into at least one TB block and calculating time needed for transmitting the TB block, which is added up with UE processing time delay to obtain the activation time .The invention also discloses a device for computing the activation time. In the invention, estimation of the activation time on basis of empirical value is not required, but more accurate activation time can be computed according to the length of the transmitted message.
Description
Technical field
The present invention relates to the radio bearer technical field of tdd systems, relate in particular to a kind of method and device that in the radio bearer control field of tdd systems, calculates activationary time.
Background technology
At time division duplex (TDD, Time Division Duplex) radio bearer (RB of system, Radio Bearer) in the process, for example carry out RB and set up (Radio Bearer Setup) in system, RB reshuffles (Radio Bearer Reconfiguration), transmission channel is reshuffled (Transport Channel Reconfiguration), physical channel is reshuffled (Physical Channel Reconfiguration), or RB is when discharging (Radio Bearer Release), for guaranteeing radio network controller (RNC, Radio Network Controller) and subscriber equipment (UE, User Equipment) can switch to new configuration synchronously, RNC is when sending relevant radio bearer order, to in this order, carry activationary time (Activation Time) parameter, the entry-into-force time of the system configuration that this parametric representation is new.
For guaranteeing that RNC and UE can switch to new configuration synchronously, can calculate the activationary time in the radio bearer process according to method shown in Figure 1.In Fig. 1, RNC handles this and orders needed fixed delay T1 according to the propagation delay time T0 and the UE of radio bearer order from the network side to UE, and it is Activation Time=CFN1+T0+T1 that activationary time (Activation Time) is set.Its meaning is, the moment CFN1 that sends the radio bearer order with network side is the zero-time reference point, and behind time delay T0 and time delay T1, at time point CFN2, UE finishes channel and switches.After UE receives this radio bearer order, need finish configuration on the border of the Transmission Time Interval (TTI, Transmission Timing Interval) of Activation Time parameter appointment and switch.
In the TDD system, when transmission channel quality changed, UE possibly can't normally receive the radio bearer order that network side sends, and network side will adopt retransmission mechanism, repeated correctly to receive this order into UE sends the radio bearer order up to UE.When UE can normally receive the radio bearer order, the propagation delay time of this order from the network side to UE was fixed value T0; When UE can not normally receive the radio bearer order, under retransmission mechanism, the propagation delay time of this order from the network side to UE can extend to T0 ' from T0, when T0 '＞T0+T1, illustrate that the time point that UE correctly receives described radio bearer order has surpassed the activationary time point that network side is provided with, and will cause UE and RNC can not switch to new configuration synchronously like this.
The collocation strategy of activationary time is to adopt the method for configuration fixed value to realize at present; This implementation method benefit is simple, can rule of thumb be worth configuration fixed value relatively preferably.But the problem of this method is:
Empirical value is difficult to obtain, needs a large amount of accumulation, and wireless environment is in case change needs groping experience value again again.Especially under the situation of large-scale network-estabilishing, if for going the groping experience value in each sub-district, it is a very great engineering, and wireless environment is bigger with the variation of irresistible factors such as weather, temperature, humidity, neighboring buildings, empirical value only has universality under certain condition, in case environment change, empirical value will lose original meaning.
Summary of the invention
In view of this, the technical problem that the present invention solves provides a kind of computing activation time method and device, to solve the deficiency that value rule of thumb is provided with activationary time.Can also be by the present invention according to the change calculations activationary time of environment, thus guarantee that network side and UE can switch to new configuration synchronously.
For this reason, technical scheme provided by the invention is as follows:
A kind of computing activation time method comprises:
The relevant parameter of pre-stored wireless bearer service and based on the transmission block TB length of all kinds of signalings of user equipment (UE) different conditions;
When triggering the radio bearer process, calculate the length of information to be transmitted according to relevant parameters, the length that obtains the TB piece according to state and the signaling type of UE;
Length according to described TB piece is divided at least one TB piece with information to be transmitted, calculates the needed time of TB piece that the described division of transmission obtains;
With described time and the addition of UE processing delay, obtain activationary time.
Wherein, when described information to be transmitted is the physical channel reconfiguration message, calculate message-length by following step;
Obtain based on length L with reference to professional physical channel reconfiguration message
P, with L
PLength as physical channel reconfiguration message waiting for transmission.
Wherein, when described information to be transmitted is the transmission channel reconfiguration message, calculate message-length by following step;
Obtain based on length L with reference to professional transmission channel reconfiguration message
T, uplink format combination TFC number N
UTFC, descending TFC number N
DTFC, uplink packed format calculated value CTFC length B
UCTFC, descending CTFC length B
DCTFC
Obtain number N based on the up TFC of the transmission channel reconfiguration message of current business
OUTFC, descending TFC number N
ODTFC, up CTFC length B
OUCTFC, descending CTFC length B
ODCTFCLength B with other cell among the up TFC
Other
Computing L
Tr=L
T+ [N
OUTFC* (B
OUCTFC+ B
Other)-N
UTFC* (B
UCTFC+ B
Other)]+[N
ODTFC* B
ODCTFC-N
DTFC* B
DCTFC], obtain the length L of transmission channel reconfiguration message waiting for transmission
Tr
Wherein, when described information to be transmitted is radio bearer message, calculate message-length by following step:
Obtain based on length L with reference to professional transmission channel reconfiguration message
T, up TFC number N
UTFC, descending TFC number N
DTFC, up CTFC length B
UCTFC, descending CTFC length B
DCTFC
Obtain number N based on the up TFC of the transmission channel reconfiguration message of current business
OUTFC, descending TFC number N
ODTFC, up CTFC length B
OUCTFC, descending CTFC length B
ODCTFCLength B with other cell among the up TFC
Other
Computing L
Tr=L
T+ [N
OUTFC* (B
OUCTFC+ B
Other)-N
UTFC* (B
UCTFC+ B
Other)]+[N
ODTFC* B
ODCTFC-N
DTFC* B
DCTFC], obtain the length L of transmission channel reconfiguration message waiting for transmission
Tr
Obtain based on information unit length L with reference to professional radio bearer release message
PSAnd the information unit number N that comprised of radio bearer message
RB
Computing L
RBS=L
Tr+ L
PS* N
RB, the length L of acquisition radio bearer message
RBS
Wherein, described radio bearer message is that radio bearer is set up message, radio bearer reconfiguration message or radio bearer release message.
Wherein, the time that the single TB piece of transmission is required and the number of TB piece multiply each other, and obtain the described needed time of TB piece of transmission.
Wherein, further comprise: if calculate the maximum activation time T of the activationary time of acquisition greater than regulation
Max, then abandon transmission information.
Wherein, further comprise:
When adopting retransmission mechanism, the channel quality that reports according to described UE calculates the number of retransmissions of described information to be transmitted, calculates the re-transmission time according to number of retransmissions;
To retransmit time and described activationary time addition, obtain activationary time based on retransmission mechanism.
Wherein, calculate the number of retransmissions of information to be transmitted by following step:
Threshold value w is set;
Calculate Er=(1-w)/M, obtain the transmitted error rate Er of single TB piece;
Calculate N=lg (Er)/lg (BLER), obtain the number of retransmissions N of information to be transmitted;
Wherein, M is a TB piece number, and BLER is the Block Error Rate of the expression channel quality that reports of described UE.
Wherein, obtain BLER by following step:
When dedicated channel was set up, notice UE measured BLER, and the BLER of its measurement of periodic report;
When triggering the radio bearer process, the BLER that reports with described UE the last time is as channel quality.
Wherein, obtain BLER by following step:
When dedicated channel was set up, notice UE measured BLER, and reports BLER with append mode;
When triggering the radio bearer process, the BLER that reports with UE is as channel quality.
Wherein, further comprise:
If based on the activationary time of retransmission mechanism maximum activation time T greater than regulation
Max, then by computing N '=(T
Max-T
e)/T
Rt, obtain new number of retransmissions N ';
Computing Er '=(BLER)
N', obtain the transmitted error rate Er ' of new single TB piece;
Computing W=Er ' * M obtains the total error probability W of transmission TB piece;
W and the threshold value w ' that presets are compared, if W＞w ' then abandons sending message; Otherwise, with T
MaxBe set to activationary time;
Wherein, T
eFor UE handles radio bearer needed time of control messages, T
RtBe to retransmit timer duration, BLER is the Block Error Rate of the expression channel quality that reports of described UE, and M is a TB piece number.
Based on said method, the present invention also provides the device of a kind of computing activation time, and this device comprises:
Memory cell is used to store the relevant parameter of wireless bearer service and based on the TB block length of all kinds of signalings of UE different conditions;
The message length unit is used for when triggering the radio bearer process, calculates the length of information to be transmitted according to relevant parameters, the length that obtains the TB piece according to state and the signaling type of UE;
The block sort unit is used for information to be transmitted is divided at least one TB piece, calculates the described needed time of TB piece of transmission;
The activationary time computing unit is used for described time and the addition of UE processing delay, obtains activationary time.
Wherein, also comprise:
Amending unit is used to judge that whether the activationary time that calculates acquisition is greater than the maximum activation time T of stipulating
Max, if then abandon transmission information.
Wherein, also comprise:
The number of retransmissions computing unit is used for when adopting retransmission mechanism, and the channel quality that reports according to UE calculates the number of retransmissions of information to be transmitted;
Retransmit the activationary time computing unit, be used for calculating the re-transmission time, will retransmit time and described activationary time addition, obtain activationary time based on retransmission mechanism according to number of retransmissions.
Wherein, the number of retransmissions computing unit comprises:
The unit is set, is used to be provided with threshold value w;
Computing unit is used to calculate Er=(1-w)/M, calculates N=lg (Er)/lg (BLER), obtains the number of retransmissions N of information to be transmitted;
Wherein, M is a TB piece number, and BLER is the Block Error Rate of the expression channel quality that reports of described UE, and Er is the transmitted error rate of single TB piece.
Wherein, also comprise: judging unit, computing unit and comparing unit;
Whether described judging unit is used to judge based on the activationary time of retransmission mechanism greater than the maximum activation time T of regulation
Max
Described computing unit is used for activationary time at retransmission mechanism greater than T
MaxThe time, computing N '=(T
Max-T
e)/T
Rt, obtain new number of retransmissions N '; Computing Er '=(BLER)
N', obtain the transmitted error rate Er ' of new single TB piece; Computing W=Er ' * M obtains the total error probability W of transmission TB piece;
Described comparing unit is used for W and the threshold value w ' that presets are compared, if W＞w ' then abandons sending message; Otherwise, with T
MaxBe set to activationary time;
Wherein, T
eFor UE handles radio bearer needed time of control messages, T
RtBe to retransmit timer duration, BLER is the Block Error Rate of the expression channel quality that reports of described UE, and M is a TB piece number.
In the present invention, at the relevant parameter of network side pre-stored wireless bearer service with based on the transmission block TB length of all kinds of signalings of equipment UE different conditions.When triggering the radio bearer process, calculate the length of information to be transmitted according to relevant parameters, the length that obtains the TB piece according to state and the signaling type of UE; Information to be transmitted is divided at least one TB piece, calculates the described needed time of TB piece of transmission; Described time and UE are handled the needed time addition of described information, obtain activationary time.As can be seen, in technical scheme disclosed in this invention, need not rule of thumb be worth and estimate activationary time, can calculate according to the length that sends message and obtain activationary time more accurately.And the present invention also provides the technical scheme according to the channel quality computing activation time, thereby can adjust activationary time according to the change dynamics ground of wireless environment, makes the present invention have general adaptability.
Description of drawings
Fig. 1 is the schematic diagram of network side computing activation time in the prior art;
Fig. 2 is the flow chart of the inventive method embodiment 1;
Fig. 3 is the flow chart of the inventive method embodiment 2;
Fig. 4 is an apparatus structure schematic diagram of the present invention;
Fig. 5 is another apparatus structure schematic diagram of the present invention.
Embodiment
Core of the present invention is: at the relevant parameter of network side pre-stored wireless bearer service with based on transmission block (TB, the Transport Block) length of all kinds of signalings of equipment UE different conditions.When triggering the radio bearer process, calculate the length of information to be transmitted according to relevant parameters, the length that obtains the TB piece according to state and the signaling type of UE; Information to be transmitted is divided at least one TB piece, calculates the described needed time of TB piece of transmission; Described time and UE are handled the needed time addition of described information, obtain activationary time.
Below, 1 pair of this method is further described in detail in conjunction with the embodiments, and Fig. 2 is the flow chart of this method.
When system initialization, all relevant parameters at the wireless bearer service of network side storing 3GPP defined, and based on the TB block size of all kinds of signalings of UE different conditions, for example: the TB block size of signalings such as the 1.7K when being in the Cell_DCH state, 3.4K, 13.6K based on UE; The TB block size of the forward access channel when being in the Cell_FACH state (FACH, Forward Access Channel) based on UE.
When triggering the radio bearer process, network side can obtain message-length to be sent according to the calculation of parameter of its preservation, and obtains the size of TB piece according to the residing state of UE and signaling type.
In step 201, when triggering the radio bearer process, network side calculates the length of message to be sent according to the parameter of type of service and its preservation, and the length of supposing this message is L.
In step 202, according to state and the signaling type of UE, obtain the size of TB piece, suppose that the TB block size that obtains is L
TB
In step 203, the message that obtains is divided into several TB pieces, i.e. computing M=L/L
TB, M is the number of TB piece, M is an integer.
Wherein, work as L/L
TBWhen not being an integer, should be to L/L
TBValue do the computing round up, that is, if L/L
TB=3.6, after then rounding up to 3.6, the value that obtains M is 4.
In step 204, calculate transmission M needed time of TB piece, i.e. computing T
t=TTI * M obtains the transmission time T of message to be transmitted
t
In step 205, with the transmission time and the UE processing delay T of described M TB piece
dAddition, i.e. computing T
Active=T
t+ T
d, obtain activationary time T
Active
Wherein, the UE processing delay can be provided with according to the maximum of the UE processing delay of 3GPP defined.
More particularly, if network side adopts the control messages in the professional transmission of the PS64K radio bearer process, signaling type is 13.6K, suppose that the radio bearer process that triggers is that RB sets up process and UE is in Cell DCH state, then can obtain the length that RB sets up message by type of service PS64K, the length of supposing this message is L
RB sets upAccording to the size that state and the signaling type of UE obtains the TB piece, the size of supposing the TB piece is L
13.6KBy calculating M=L
RB sets up/ L
13.6K, obtain the number M of TB piece waiting for transmission.Suppose that it is T that UE processing RB sets up the needed time of message
d, then by computing T
Active=TTI * M+T
dObtain activationary time T
Active
In the step 201 of embodiment 1, network side directly calculates corresponding radio bearer message-length according to the radio bearer parameter of type of service and preservation in advance.In actual conditions, also can adopt another kind of method to calculate the length of radio bearer message.
At first, the message in the RB process is divided three classes, is respectively RB message (comprising that RB sets up, RB reshuffles and the RB release message), transmission channel reconfiguration message and physical channel reconfiguration message.
Then, be provided with, suppose that with the PS64K business serve as with reference to professional, and obtain based on this length with reference to length, transmission channel reconfiguration message and the physical channel reconfiguration message of information unit in the RB message of business with reference to professional.Suppose that the information unit length that the RB message based on the PS64K business is comprised is L
PS, the transmission channel reconfiguration message length be L
T, the physical channel reconfiguration message length be L
P
Calculate the length of various types of messages in the RB process as follows:
When message waiting for transmission is the physical channel reconfiguration message, owing to do not carry the transformat combination (TFCS bigger in the physical channel reconfiguration message to the message effect length, Transport Format Combination Set) information, so no matter network side sends the physical channel reconfiguration message based on which kind of business to UE, all the length with this message also is set to L
P
When message waiting for transmission is the transmission channel reconfiguration message, though do not comprise RB information in the transmission channel reconfiguration message, but comprise the transmission packed format calculated value (CTFC bigger to the message effect length, Calculated Transport Format Combination) information, so when network side sends the transmission channel reconfiguration message based on current business, suppose that network side, should be according to the length L based on the professional transmission channel reconfiguration message of reference based on the professional transmission channel reconfiguration message that sends of CS12.2K
TCalculate the length of message to be sent, specifically comprise:
Based on the length with reference to professional transmission channel reconfiguration message is L
T, from the radio bearer parameter of preserving in advance, can also obtain number N based on uplink format combination (TFC, the Transport Format Combination) information of the professional transmission channel reconfiguration message of reference
UTFC, up CTFC bit length B
UCTFC, descending TFC number N
DTFC, descending CTFC bit length B
DCTFCWhen sending the transmission channel reconfiguration message based on CS12.2K is professional, the number of uplink and downlink TFC is respectively N
OUTFC, N
ODTFC, uplink and downlink CTFC bit length is respectively B
OUCTFC, B
ODCTFC, and the shared bit of other cell (IE) is B among each up TFC
Other, utilize following formula can calculate length L based on the professional channel transmitted reconfiguration message of CS12.2K
TrFor:
L
Tr＝L
T+[N
OUTFC×(B
OUCTFC+B
other)-N
UTFC×(B
UCTFC+B
other)]
+[N
ODTFC×B
ODCTFC-N
DTFC×B
DCTFC]
Because RB message has increased RB information than transmission channel reconfiguration message, just the RB information that increases is more fixing when message waiting for transmission is RB message.Therefore, when calculating the length of RB message, promptly need to calculate the length of transmission channel reconfiguration message, i.e. L
Tr, calculate the length of RB information again.
The number of signal wireless carrying (SRB, Signal RB) information unit of supposing to comprise in RB message is N
RB, then press L
RBS=L
Tr+ L
PS* N
RBCalculate the length L of RB message
RBS
In said method, L
PSBe based on length, according to L with reference to information unit in the professional RB message
PSCalculate the length of RB information, its reason is, no matter based on which kind of business, the length of information unit can be thought to equate in the RB message (comprising that RB sets up message, RB reconfiguration message and RB release message).So, when the RB message length of calculating based on current business, can utilize L
PS, and for RB set up, RB reshuffles and RB discharges this three kinds of message, the information unit length in them also is identical, difference only is the number of information unit.
Calculate the length of acquisition message to be transmitted by said method after, just message waiting for transmission can be divided into some TB pieces, and carry out follow-up calculation procedure.
When network side adopts non-retransmission mechanism to transmit radio bearer message, can adopt the 1 described method computing activation time of embodiment.
But, when network side adopts retransmission mechanism transmission radio bearer message, then also need to consider the re-transmission time of network side during the time at computing activation.Below, 2 pairs of these methods are further described in detail in conjunction with the embodiments, and Fig. 3 is the flow chart of this method.
In step 301, in dedicated channel (DCH, Dedicated Channel) when setting up, network side notice UE measures the Block Error Rate (BLER) of down channel, and the BLER that obtains of reporting measurement.
Wherein, network side notice UE reports the mode of BLER to have two kinds:
First kind, notice UE periodic report BLER, promptly network side sends to UE with report cycle, and UE will report network side with its BLER that measures the down channel that obtains by this cycle;
Second kind, notice UE adopts append mode to report BLER,, only when the incident of generation, for example triggers the RB process that is, and UE just reports network side with the BLER that it measures the down channel that obtains.
When triggering the RB process, network side calculates T in step 302～306
Active, its implementation is identical with step 201～205 among the embodiment 1, no longer repeat specification here.
In step 307, reliably issue thresholding according to the message that presets, be assumed to be w, calculate the transmitted error rate Er of single TB piece.
Wherein, threshold value w is a percentage, both can obtain by emulation, also can be according to the specific requirement setting.By computing Er=(1-w)/M, obtain the transmitted error rate Er of single TB piece.Wherein, M is the TB piece number to be sent that obtains in step 304.
In step 308, utilize the BLER that UE reports and the transmitted error rate Er of single TB piece to calculate number of retransmissions N.
By formula (BLER)
N=Er calculates and obtains number of retransmissions N, this formula can be transformed to N=lg (Er)/lg (BLER), calculates and obtains number of retransmissions N, and N is an integer.
Wherein, as lg (Er)/when lg (BLER) is not an integer, should do the computing that round up to the value of lg (Er)/lg (BLER), that is, if lg (Er)/lg (BLER)=3.6, after then rounding up to 3.6, the value that obtains N is 4.
Table 1 shows the relation between the transmitted error rate Er of BLER, number of retransmissions N and single TB piece, wherein, when Er less than 0.0001 the time, think that Er is 0.
Table 1
Wherein, because UE reports the mode of BLER can be divided into two kinds in the present invention, promptly periodic report reports with additional, if its BLER that measures of UE periodic report, then when triggering the RB process, the BLER that network side adopts UE the last time to report calculates number of retransmissions; If UE adopts append mode to report its BLER that measures, then network side adopts when triggering the RB process, and UE calculates number of retransmissions with the BLER that append mode reports.
After obtaining number of retransmissions, in step 309, calculate re-transmission time and the activationary time T ' under retransmission mechanism
By computing T
Rt* N obtains the re-transmission time; Then, by computing T '=T
Active+ T
Rt* N obtains the activationary time T ' under retransmission mechanism.Wherein, T
RtFor retransmitting timer duration.
Enforcement 1 and embodiment 2 provide respectively under non-retransmission mechanism and retransmission mechanism, calculate the computing activation time method in the RB process.
No matter be embodiment 1 or embodiment 2, calculate the activationary time T that obtains
ActiveOr T ' might be assumed to be T above the activationary time maximum of 3GPP regulation
MaxFor guaranteeing to calculate the T that obtains
ActiveOr T ' is no more than the maximum of T of the activationary time of regulation
MaxAcquisition T can calculated
ActiveOr behind the T ', network side is judged T
ActiveOr whether T ' is greater than T
Max
If under non-retransmission mechanism, calculate the T that obtains
ActiveGreater than T
Max, then abandon sending message.
If the T ' that calculates acquisition under retransmission mechanism is greater than T
Max, then network side need be according to T
Max, UE handles the needed time T of radio bearer control messages
eAnd T
RtRecomputate number of retransmissions N ', i.e. computing N '=(T
Max-T
e)/T
RtThen, recomputate the transmitted error rate Er ' of single TB piece, i.e. computing Er '=(BLER)
N'.At last, calculate the total error probability W of all TB pieces to be transmitted, i.e. computing W=Er ' * M, and comparison W and the maximum that presets send the size of upper limit w '.If W＞w ' then abandons sending message; Otherwise, press T
MaxActivationary time is set.
Wherein, threshold value w ' is a percentage, both can obtain by emulation, also can be according to the specific requirement setting.
Wherein, as (T
Max-T
e)/T
RtWhen not being an integer, should be to (T
Max-T
e)/T
RtValue do the computing round up, that is, if (T
Max-T
e)/T
Rt=3.6, after then rounding up to 3.6, the value that obtains N ' is 4.
Based on said method, the present invention also provides the device of a kind of computing activation time, Fig. 4 is based on the structural representation of this device of non-retransmission mechanism, and this device comprises: memory cell 401, message length unit 402, block sort unit 403 and activationary time computing unit 404.
When system initialization, with all relevant parameters of the wireless bearer service of 3GPP defined with based on the TB block length of all kinds of signalings of UE different conditions, for example: the TB block size of signalings such as the 1.7K when being in the Cell_DCH state, 3.4K, 13.6K based on UE, the TB block size of FACH when being in the Cell_FACH state based on UE is pre-stored in memory cell 401.
When triggering the radio bearer process, by message length unit 402, can be according to the length of relevant calculation of parameter information to be transmitted, and the length that obtains the TB piece according to state and the signaling type of UE.Then, utilize block sort unit 403 that information to be transmitted is divided into several TB pieces, and calculate described several needed times of TB piece of transmission.
The length of supposing message to be transmitted is L, and the size of single TB piece is L
TB, then block sort unit 403 is by computing M=L/L
TBInformation to be transmitted is divided into M TB piece, and by computing T
t=TTI * M obtains described M needed time T of TB piece of transmission
t
Wherein, M is an integer, works as L/L
TBWhen not being an integer, should be to L/L
TBValue do the computing round up, that is, if L/L
TB=3.6, after then rounding up to 3.6, the value that obtains M is 4.
Obtain M TB piece of transmission after the needed time, utilize activationary time computing unit 404 that described time and UE are handled the needed time addition of described information, obtain activationary time.
Activationary time computing unit 404 computing T
Active=T
t+ T
d, obtain activationary time T
Active, T
dBe the UE processing delay.
Wherein, the UE processing delay can be provided with according to the maximum of the UE processing delay of 3GPP defined.
Calculate the activationary time T that obtains
ActiveMight surpass the activationary time maximum of 3GPP regulation, be assumed to be T
MaxFor guaranteeing to calculate the T that obtains
ActiveBe no more than the maximum of T of the activationary time of regulation
MaxAcquisition T can calculated
ActiveAfter, activationary time is revised accordingly.
Under non-retransmission mechanism, this device can also comprise an amending unit, is used to judge the activationary time T that calculates acquisition
ActiveWhether greater than the maximum activation time T of regulation
Max,, if then abandon transmission information.
The above-mentioned device that is based on the computing activation time of non-retransmission mechanism, the present invention also provides the device of a kind of computing activation time based on retransmission mechanism, and Fig. 5 is the structural representation of this device.
Compare with device shown in Figure 4, this device has increased number of retransmissions computing unit 51, has retransmitted activationary time computing unit 52.
Number of retransmissions computing unit 51 is used for the channel quality that reports according to UE, calculates the number of retransmissions of information to be transmitted; Retransmit activationary time computing unit 52, be used for calculating the re-transmission time according to number of retransmissions, the activationary time addition with re-transmission time and activationary time computing unit 404 computings acquisition obtains the activationary time based on retransmission mechanism.
Wherein, number of retransmissions computing unit 51 comprises unit 511 and computing unit 512 is set.Message is set reliably issues thresholding by unit 511 is set, be assumed to be w.Calculate Er=(1-w)/M by computing unit 512, and calculate N=lg (Er)/lg (BLER), obtain the number of retransmissions N of information to be transmitted.Wherein, Er is the transmitted error rate of single TB piece, and M is a TB piece number, and BLER is the Block Error Rate of the expression channel quality that reports of described UE; N is an integer, when lg (Er)/lg (BLER) is not whole
During number, the computing that should round up to the value work of lg (Er)/lg (BLER), that is, if lg (Er)/lg (BLER)=3.6, after then rounding up to 3.6, the value that obtains N is 4.
After obtaining number of retransmissions, by retransmitting activationary time computing unit 52 computing T
Rt* N obtains to retransmit time T ', T
RtFor retransmitting timer duration.
Calculate the activationary time maximum that the activationary time T ' that obtains might surpass the 3GPP regulation, be assumed to be T
MaxFor guaranteeing to calculate the maximum of T that the T ' that obtains is no more than the activationary time of regulation
MaxCan after calculating acquisition T ', activationary time be revised accordingly.
Under retransmission mechanism, this device can also comprise: judging unit, computing unit and comparing unit.
Whether judging unit is used to judge based on the activationary time of retransmission mechanism greater than the maximum activation time T of regulation
Max
Computing unit is used for activationary time at retransmission mechanism greater than T
MaxThe time, computing N '=(T
Max-T
e)/T
Rt, obtain new number of retransmissions N '; Computing Er '=(BLER)
N', obtain the transmitted error rate Er ' of new single TB piece; Computing W=Er ' * M obtains the total error probability W of transmission TB piece.
Comparing unit is used for that W is sent upper limit w ' with the maximum that presets and compares, if W＞w ' then abandons sending message; Otherwise, press T
MaxActivationary time is set.
Wherein, T
eFor UE handles radio bearer needed time of control messages, T
RtBe to retransmit timer duration, BLER is the Block Error Rate of the expression channel quality that reports of described UE, and M is a TB piece number; N ' is an integer, as (T
Max-T
e)/T
RtWhen not being an integer, should be to (T
Max-T
e)/T
RtValue do the computing round up, that is, if (T
Max-T
e)/T
Rt=3.6, after then rounding up to 3.6, the value that obtains N ' is 4.
Above-described embodiment only is preferred embodiment of the present invention, and is in order to restriction the present invention, within the spirit and principles in the present invention not all, any modification of being done, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (17)
1. a computing activation time method is characterized in that, comprising:
The relevant parameter of pre-stored wireless bearer service and based on the transmission block TB length of all kinds of signalings of user equipment (UE) different conditions;
When triggering the radio bearer process, calculate the length of information to be transmitted according to relevant parameters, the length that obtains the TB piece according to state and the signaling type of UE;
Length according to described TB piece is divided at least one TB piece with information to be transmitted, calculates the needed time of TB piece that the described division of transmission obtains;
With described time and the addition of UE processing delay, obtain activationary time.
2. method according to claim 1 is characterized in that, when described information to be transmitted is the physical channel reconfiguration message, calculates message-length by following step;
Obtain based on length L with reference to professional physical channel reconfiguration message
P, with L
PLength as physical channel reconfiguration message waiting for transmission.
3. method according to claim 1 is characterized in that, when described information to be transmitted is the transmission channel reconfiguration message, calculates message-length by following step;
Obtain based on length L with reference to professional transmission channel reconfiguration message
T, uplink format combination TFC number N
UTFC, descending TFC number N
DTFC, uplink packed format calculated value CTFC length B
UCTFC, descending CTFC length B
DCTFC
Obtain number N based on the up TFC of the transmission channel reconfiguration message of current business
OUTFC, descending TFC number N
ODTFC, up CTFC length B
OUCTFC, descending CTFC length B
ODCTFCLength B with other cell among the up TFC
Other
Computing L
Tr=L
T+ [N
OUTFC* (B
OUCTFC+ B
Other)-N
UTFC* (B
UCTFC+ B
Other)]+[N
ODTFC* B
ODCTFC-N
DTFC* B
DCTFC], obtain the length L of transmission channel reconfiguration message waiting for transmission
Tr
4. method according to claim 1 is characterized in that, when described information to be transmitted is radio bearer message, calculates message-length by following step:
Obtain based on length L with reference to professional transmission channel reconfiguration message
T, up TFC number N
UTFC, descending TFC number N
DTFC, up CTFC length B
UCTFC, descending CTFC length B
DCTFC
Obtain number N based on the up TFC of the transmission channel reconfiguration message of current business
OUTFC, descending TFC number N
ODTFC, up CTFC length B
OUCTFC, descending CTFC length B
ODCTFCLength B with other cell among the up TFC
Other
Computing L
Tr=LT+[N
OUTFC* (B
OUCTFC+ B
Other)-N
UTFC* (B
UCTFC+ B
Other)]+[N
ODTFC* B
ODCTFC-N
DTFC* B
DCTFC], obtain the length L of transmission channel reconfiguration message waiting for transmission
Tr
Obtain based on information unit length L with reference to professional radio bearer release message
PSAnd the information unit number N that comprised of radio bearer message
RB
Computing L
RBS=L
Tr+ L
PS* N
RB, the length L of acquisition radio bearer message
RBS
5. method according to claim 4 is characterized in that, described radio bearer message is that radio bearer is set up message, radio bearer reconfiguration message or radio bearer release message.
6. method according to claim 1 is characterized in that, the number of Transmission Time Interval TTI and TB piece is multiplied each other, and obtains the described needed time of TB piece of transmission.
7. according to any described method of claim 1 to 6, it is characterized in that, further comprise: if calculate the maximum activation time T of the activationary time of acquisition greater than regulation
Max, then abandon transmission information.
8. according to any described method of claim 1 to 6, it is characterized in that, further comprise:
When adopting retransmission mechanism, the channel quality that reports according to described UE calculates the number of retransmissions of described information to be transmitted, calculates the re-transmission time according to number of retransmissions;
To retransmit time and described activationary time addition, obtain activationary time based on retransmission mechanism.
9. method according to claim 8 is characterized in that, calculates the number of retransmissions of information to be transmitted by following step:
Threshold value w is set;
Calculate Er=(1-w)/M, obtain the transmitted error rate Er of single TB piece;
Calculate N=lg (Er)/lg (BLER), obtain the number of retransmissions N of information to be transmitted;
Wherein, M is a TB piece number, and BLER is the Block Error Rate of the expression channel quality that reports of described UE.
10. method according to claim 9 is characterized in that, obtains BLER by following step:
When dedicated channel was set up, notice UE measured BLER, and the BLER of its measurement of periodic report;
When triggering the radio bearer process, the BLER that reports with described UE the last time is as channel quality.
11. method according to claim 9 is characterized in that, obtains BLER by following step:
When dedicated channel was set up, notice UE measured BLER, and reports BLER with append mode;
When triggering the radio bearer process, the BLER that reports with UE is as channel quality.
12. method according to claim 8 is characterized in that, further comprises:
If based on the activationary time of retransmission mechanism maximum activation time T greater than regulation
Max, then by computing N '=(T
Max-T
e)/T
Rt, obtain new number of retransmissions N ';
Computing Er '=(BLER)
N', obtain the transmitted error rate Er ' of new single TB piece;
Computing W=Er ' * M obtains the total error probability W of transmission TB piece;
W and the threshold value w ' that presets are compared, if W＞w ' then abandons sending message; Otherwise, with T
MaxBe set to activationary time;
Wherein, T
eFor UE handles radio bearer needed time of control messages, T
RtBe to retransmit timer duration, BLER is the Block Error Rate of the expression channel quality that reports of described UE, and M is a TB piece number.
13. the device of a computing activation time is characterized in that, comprising:
Memory cell is used to store the relevant parameter of wireless bearer service and based on the TB block length of all kinds of signalings of UE different conditions;
The message length unit is used for when triggering the radio bearer process, calculates the length of information to be transmitted according to relevant parameters, the length that obtains the TB piece according to state and the signaling type of UE;
The block sort unit is used for information to be transmitted is divided at least one TB piece, calculates the described needed time of TB piece of transmission;
The activationary time computing unit is used for described time and the addition of UE processing delay, obtains activationary time.
14. device according to claim 13 is characterized in that, also comprises:
Amending unit is used to judge that whether the activationary time that calculates acquisition is greater than the maximum activation time T of stipulating
Max, if then abandon transmission information.
15. device according to claim 13 is characterized in that, also comprises:
The number of retransmissions computing unit is used for when adopting retransmission mechanism, and the channel quality that reports according to UE calculates the number of retransmissions of information to be transmitted;
Retransmit the activationary time computing unit, be used for calculating the re-transmission time, will retransmit time and described activationary time addition, obtain activationary time based on retransmission mechanism according to number of retransmissions.
16. device according to claim 15 is characterized in that, the number of retransmissions computing unit comprises:
The unit is set, is used to be provided with threshold value w;
Computing unit is used to calculate Er=(1-w)/M, calculates N=lg (Er)/lg (BLER), obtains the number of retransmissions N of information to be transmitted;
Wherein, M is a TB piece number, and BLER is the Block Error Rate of the expression channel quality that reports of described UE, and Er is the transmitted error rate of single TB piece.
17. device according to claim 15 is characterized in that, also comprises: judging unit, computing unit and comparing unit;
Whether described judging unit is used to judge based on the activationary time of retransmission mechanism greater than the maximum activation time T of regulation
Max
Described computing unit is used for activationary time at retransmission mechanism greater than T
MaxThe time, computing N '=(T
Max-T
e)/T
Rt, obtain new number of retransmissions N '; Computing Er '=(BLER)
N', obtain the transmitted error rate Er ' of new single TB piece; Computing W=Er ' * M obtains the total error probability W of transmission TB piece;
Described comparing unit is used for W and the threshold value w ' that presets are compared, if W＞w ' then abandons sending message; Otherwise, with T
MaxBe set to activationary time;
Wherein, T
eFor UE handles radio bearer needed time of control messages, T
RtBe to retransmit timer duration, BLER is the Block Error Rate of the expression channel quality that reports of described UE, and M is a TB piece number.
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| CN2006101649113A CN101197612B (en) | 2006-12-07 | 2006-12-07 | Method and device for computing activation time |
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|---|---|---|---|
| CN2006101649113A CN101197612B (en) | 2006-12-07 | 2006-12-07 | Method and device for computing activation time |
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| CN101197612B true CN101197612B (en) | 2011-06-15 |
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| CN102547987B (en) * | 2010-12-14 | 2014-09-17 | 联芯科技有限公司 | Method and device for transmitting radio configuration message |
| CN102143535A (en) * | 2011-03-31 | 2011-08-03 | 上海华为技术有限公司 | Method and network side equipment for configuring activation time |
| CN106162731A (en) * | 2015-03-23 | 2016-11-23 | 上海宝钢工业技术服务有限公司 | Industrial field data transmission method based on 3G wireless network |
| CN108199814B (en) * | 2018-01-17 | 2020-08-07 | 中车青岛四方机车车辆股份有限公司 | Data transmission method and device |
| CN110830201B (en) * | 2018-08-09 | 2021-07-09 | 华为技术有限公司 | Communication method and device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1553715A (en) * | 2003-05-27 | 2004-12-08 | 中国科学技术大学 | Channel inserting method in spread spectrum grouped network based on multipacket receive |
| CN1804823A (en) * | 2005-12-22 | 2006-07-19 | 北京中星微电子有限公司 | Direct memory access controller |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1553715A (en) * | 2003-05-27 | 2004-12-08 | 中国科学技术大学 | Channel inserting method in spread spectrum grouped network based on multipacket receive |
| CN1804823A (en) * | 2005-12-22 | 2006-07-19 | 北京中星微电子有限公司 | Direct memory access controller |
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