CN107438285A - A kind of uplink synchronous method of adjustment and device - Google Patents
A kind of uplink synchronous method of adjustment and device Download PDFInfo
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- CN107438285A CN107438285A CN201610364671.5A CN201610364671A CN107438285A CN 107438285 A CN107438285 A CN 107438285A CN 201610364671 A CN201610364671 A CN 201610364671A CN 107438285 A CN107438285 A CN 107438285A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W56/00—Synchronisation arrangements
- H04W56/004—Synchronisation arrangements compensating for timing error of reception due to propagation delay
- H04W56/0045—Synchronisation arrangements compensating for timing error of reception due to propagation delay compensating for timing error by altering transmission time
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Abstract
The invention provides a kind of uplink synchronous method of adjustment and device, technical scheme to be：Uplink synchronous is divided into three phases, first stage carries out uplink synchronous according to the SR signals of reception, second stage carries out uplink synchronous according to the synchronizing signal that the reception of cycle P1 is sent according to synchronizing signal, and when user terminal is in the second mobile status, into the phase III according to according to it is presetting when the synchronizing signal that receives of cycle estimator P2 carry out uplink synchronous.The present invention carries out Fast synchronization in the starting stage of uplink synchronous and carries out uplink synchronization tracking compared with time slack in user terminal movement, can also prevent the availability of frequency spectrum from declining while terminal movement demand is supported.
Description
Technical field
The present invention relates to wireless communication technology field, more particularly to a kind of uplink synchronous method of adjustment and dress
Put.
Background technology
With the continuous development of radio communication new technology, and mobile Internet and Internet of Things industry is flourishing
Development, every profession and trade drastically expand to the demand of Mobile solution, how preferably to support the mobile of terminal and need
Ask, turn into a focus.
Up when having service request to support mobile service application, user terminal periodically sends synchronous letter
Number, evolved base station (Evolved Node B, eNB) sends week according to the synchronizing signal of user terminal
Phase receives synchronizing information and evaluation time lead (Timing Advance, TA), to continuous N
After secondary obtained TA is carried out averagely, determined whether to send adjustment order according to average value, more than 1/2
Step, adjust 1Ts；Less than -1/2step, adjustment -1Ts；Other situations do not adjust.
In actual applications, when the synchronizing signal transmission cycle is smaller, in the case that channel is bad, eNB
TA adjustment orders can be frequently sent, reduce the availability of frequency spectrum.When the synchronizing signal transmission cycle is larger,
UE from adhere to successfully to uplink service ask this period, as UE movement cause TA deviate desired value mistake
Greatly, follow-up PUSCH demodulation performances will be influenceed, reduce the availability of frequency spectrum, for example, carrying out MCS
During selection, if the MCS grades of selection are low, the availability of frequency spectrum can be caused to decline；And for example, PUSCH
Continuous multiple frames malfunction, and UE returns residence sub-band, also result in availability of frequency spectrum decline.
The content of the invention
In view of this, can it is an object of the invention to provide a kind of uplink synchronous method of adjustment and device
Prevent the availability of frequency spectrum from declining.
In order to achieve the above object, the invention provides following technical scheme：
A kind of uplink synchronous method of adjustment, this method include：
Step A, the resource request SR signals of user terminal are received, based on SR signal acquisitions TA and root
The operation of the first uplink synchronous is performed according to the TA of acquisition, is awarded if the uplink service of user terminal is in up
Illegal state is weighed, then returns and performs step A, otherwise, performs step B；
Step B, cycle P1 reception synchronizing signal is sent according to synchronizing signal, based on synchronous signal obtaining
TA simultaneously performs the operation of the second uplink synchronous according to the TA of acquisition, if user terminal is in the first movement shape
State, if then the uplink service of user terminal is in uplink authorization illegal state, return to step A is performed,
Otherwise, return and perform step B；If user terminal is in the second mobile status, if user terminal
Uplink service is in uplink authorization illegal state, then returns and perform step A, otherwise, performs step C；
Step C, according to it is presetting when cycle estimator P2 receive synchronizing signal, based on synchronous signal obtaining
TA simultaneously performs the operation of the 3rd uplink synchronous according to the TA of acquisition, if the uplink service of user terminal is in
Uplink authorization illegal state, then return to step A execution, otherwise, return and perform step C；
Wherein, P1 is less than or equal to P2.
A kind of uplink synchronous adjusting apparatus, the device include：First synchronization unit, the second synchronization unit,
3rd synchronization unit；
First synchronization unit, for receiving the resource request SR signals of user terminal, based on SR
Signal acquisition TA simultaneously performs the operation of the first uplink synchronous according to the TA of acquisition, if user terminal is upper
Industry business is in uplink authorization illegal state, then returns to the operation for performing the SR signals for receiving user terminal,
Otherwise, notify the second synchronization unit performs to send cycle P1 reception synchronizing signal according to synchronizing signal；
Second synchronization unit, for receiving the notice of the first synchronization unit, sent according to synchronizing signal
Cycle P1 receives synchronizing signal, is performed based on synchronous signal obtaining TA and according to the TA of acquisition on second
Row simultaneously operating, if user terminal is in the first mobile status, if at the uplink service of user terminal
In uplink authorization illegal state, then the first synchronization unit is notified to perform the SR signals of reception user terminal
Operation, otherwise, the operation for sending cycle P1 according to synchronizing signal and receiving synchronizing signal is performed again；Such as
Fruit user terminal is in the second mobile status, if then the uplink service of user terminal is forbidden in uplink authorization
State, then notify the first synchronization unit to perform the operation for the SR signals for receiving user terminal, otherwise, lead to
Know the 3rd synchronization unit perform according to it is presetting when cycle estimator P2 receive the operation of synchronizing signal；
3rd synchronization unit, for receiving the notice of the second synchronization unit, according to default timing estimation
Cycle P2 receives synchronizing signal, is performed based on synchronous signal obtaining TA and according to the TA of acquisition on the 3rd
Row simultaneously operating, if the uplink service of user terminal is in uplink authorization illegal state, notify first
Synchronization unit performs the operation for the SR signals for receiving user terminal, otherwise, performs again according to presetting
When cycle estimator P2 receive the operation of synchronizing signal；
Wherein, P1 is less than or equal to P2.
As can be seen from the above technical solution, in the present invention, uplink synchronous is divided into three phases, the first rank
Section carries out uplink synchronous according to the SR signals of reception, and second stage sends the cycle according to according to synchronizing signal
The synchronizing signal that P1 is received carries out uplink synchronous, and when user terminal does not move or be mobile more slow,
Into the phase III according to according to it is presetting when the synchronizing signal that receives of cycle estimator P2 carry out uplink synchronous.
The present invention carries out Fast synchronization in the starting stage of uplink synchronous and carried out in user terminal movement compared with time slack
Link synchronization tracing, it can also prevent the availability of frequency spectrum from declining while terminal movement demand is supported.
Brief description of the drawings
Fig. 1 is uplink synchronous method of adjustment flow chart of the embodiment of the present invention；
Fig. 2 is the structural representation of uplink synchronous adjusting apparatus of the embodiment of the present invention.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, below in conjunction with the accompanying drawings simultaneously
According to embodiment, technical scheme is described in detail.
In the present invention, uplink synchronous is divided into three phases, wherein,
In the first stage, the uplink service of user terminal is in uplink authorization illegal state, is sent to base station
Resource request (Source Request, SR) signal, SR signal acquisition time of the base station based on reception carry
Preceding amount (Time Advanced, TA) simultaneously performs the operation of the first uplink synchronous accordingly；
In second stage, the uplink service of user terminal is in uplink authorization opening, and user terminal
(illustrated hereinafter) in the first mobile status, base station sends the reception of cycle P1 according to synchronizing signal
The synchronizing signal that user terminal is sent, the synchronous signal obtaining TA based on reception are simultaneously performed on second accordingly
Row simultaneously operating, to realize Fast synchronization；
In the phase III, the uplink service of user terminal is in uplink authorization opening, and user terminal
In the second mobile status, base station according to it is presetting when cycle estimator P2 receive user terminal send it is same
Signal is walked, the synchronous signal obtaining TA based on reception simultaneously performs the operation of the 3rd uplink synchronous accordingly, with reality
Existing synchronized tracking.
Referring to Fig. 1, Fig. 1 is uplink synchronous method of adjustment flow chart of the embodiment of the present invention, specifically include with
Lower step：
Step 101, the SR signals for receiving user terminal, based on SR signal acquisitions TA and according to acquisition
TA perform the first uplink synchronous operation.
User terminal is up have during service request, it is necessary to first to base station send resource request (SR) signal with
The resource needed for uplink traffic transmission is obtained, base station can be based on SR signal acquisition Timing Advances (Time
Advanced, TA).
This step belongs to the first stage of uplink synchronous, in the first stage, the uplink service of user terminal
Uplink authorization is not yet turned on, in uplink authorization illegal state, in order to realize Fast synchronization, according to based on
The TA of SR signal acquisitions performs the operation of the first uplink synchronous, specifically includes following steps：
A1, the TA addition SYN registers by acquisition, judge TA number in SYN register, such as
TA number in fruit SYN register is less than preset cumulative number M, then performs A2, if synchronous deposit
TA number in device is equal to M, then performs A3；
If the uplink service of A2, user terminal is in uplink authorization illegal state, returns and perform step
101, otherwise, perform step 102；
A3, calculate TA adjusted values using M TA in SYN register and empty SYN register,
If TA adjusted values are more than default first step-length step1, TA is arranged to preset duration T (1Ts),
If TA adjusted values are less than-step1, TA is arranged to-T (namely inverse value of preset duration), if
TA adjusted values are located at section [- step1, step1], then TA are arranged into 0.After TA values,
Base station also needs to issue TA values passage time advance command (Timing Advance Command)
To user terminal, user terminal is based on TA values and carry out uplink synchronous adjustment.
In the present invention, whether according to the TA of SR signal acquisitions, according further to synchronous signal obtaining
TA, the TA of acquisition is added in SYN register, when the TA accumulations in SYN register to one
When determining number M, TA adjusted values are calculated using M TA in SYN register, and according to TA
Adjusted value determines the need for carrying out uplink synchronous adjustment, in the first stage of uplink synchronous, if TA
Adjusted value is more than step1 or less than-step1, then is required to carry out uplink synchronous adjustment, otherwise, is not required to
Uplink synchronous adjustment is carried out, TA is arranged to 0.
Step 102, if the uplink service of user terminal is in uplink authorization illegal state, return is held
Row step 101, otherwise, perform step 103；
In the present invention, no matter the first stage in uplink synchronous, second stage or phase III,
When the uplink service of user terminal is in uplink authorization illegal state, it is required to return to first stage execution,
In the present embodiment, namely return to step 101 performs.And in the first stage of uplink synchronous, if with
The uplink service of family terminal is in uplink authorization opening, then needs the second stage into uplink synchronous,
In the present embodiment, namely go to step 103 and perform.
Step 103, cycle P1 reception synchronizing signal is sent according to synchronizing signal, based on synchronous signal obtaining
TA simultaneously performs the operation of the second uplink synchronous according to the TA of acquisition.
This step belongs to the second stage of uplink synchronous.If the current synchronizing signal that do not arrive sends frame, need
Wait and receive synchronizing signal again until reaching synchronizing signal and sending frame.
In the present embodiment, user terminal need to send synchronizing signal with less transmission cycle P1,
Base station then sends cycle P1 reception synchronizing signal according to synchronizing signal, so as to be based on synchronous signal obtaining TA
And the operation of the second uplink synchronous is performed according to the TA of acquisition, to carry out Fast synchronization, meet that terminal is moved
Dynamic demand.The operation of second uplink synchronous is performed according to the TA of acquisition, specifically includes following steps：
B1, the TA addition SYN registers by acquisition, judge TA number in SYN register, such as
TA number in fruit SYN register is less than preset cumulative number M, then performs B2, if synchronous deposit
TA number in device is equal to M, then performs B3；
If the uplink service of B2, user terminal is in uplink authorization illegal state, return to step 101 is held
OK, otherwise, return and perform step 103；
B3, calculate TA adjusted values using M TA in SYN register and empty SYN register,
If TA adjusted values are more than default second step-length step2, TA is arranged to preset duration T, if TA
Adjusted value is less than-step2, then TA is arranged into-T, if TA adjusted values are located at section [- step2, step2],
TA is then arranged to 0.After TA values, base station is also needed to TA value passage time leads
Order (Timing Advance Command) is handed down to user terminal, user terminal is based on TA values
Carry out uplink synchronous adjustment.
In the present invention, whether according to the TA of SR signal acquisitions, according further to synchronous signal obtaining
TA, the TA of acquisition is added in SYN register, when the TA accumulations in SYN register to one
When determining number M, TA adjusted values are calculated using M TA in SYN register, and according to TA
Adjusted value determines the need for carrying out uplink synchronous adjustment, in the second stage of uplink synchronous, if TA
Adjusted value is more than step2 or less than-step2, then is required to carry out uplink synchronous adjustment, otherwise, is not required to
Uplink synchronous adjustment is carried out, TA is arranged to 0.
Step 104, the mobile status for judging user terminal, if user terminal is in the first mobile status,
Step 105 is then performed, if user terminal is in the second mobile status, performs 106；
, it is necessary to be determined whether according to the mobile status of user terminal after the second stage of uplink synchronous is entered
The phase III into uplink synchronous is needed, the mobile status of user terminal includes the first mobile status and the
Two two kinds of mobile status, wherein, the method for judging the mobile status residing for user terminal is：If recently
It is 0 that TA values are set when once performing the operation of the second uplink synchronous, and sends the cycle according to synchronizing signal
P1 continuously receives more than M synchronizing signal, it is determined that user terminal is in the second mobile status, no
Then, determine that user terminal is in the first mobile status.
As can be seen that user terminal is in the first mobile status, show the current translational speed of user terminal
Comparatively fast, thus also need to carry out uplink synchronous adjustment that (the last time sets when performing the operation of the second uplink synchronous
The TA values put for 0), or, in the second stage of uplink synchronous, base station continuously receives same
It is less (not up to M) to walk signal number.User terminal is in the second mobile status, shows user's end
Hold current translational speed slower, thus need not frequently carry out uplink synchronous adjustment (the last time execution
The TA values that set are 0), and in the second stage of uplink synchronous, base when second uplink synchronous operates
The synchronizing signal number that station continuously receives is more (meeting or exceeding M).
Step 105, judge whether the uplink service of user terminal is in uplink authorization illegal state, if
It is then to return and perform step 101, otherwise, returns and perform step 103；
When user terminal is in the first mobile status, if the uplink service of user terminal is in uplink authorization
Illegal state, then need to return to execution step 101, otherwise perform step 103, it is necessary to return.
Step 106, judge whether the uplink service of user terminal is in uplink authorization illegal state, if
It is then to return and perform step 101, otherwise, performs step 107；
When user terminal is in the second mobile status, if the uplink service of user terminal is in uplink authorization
Illegal state, then need return perform step 101, otherwise, it is necessary into uplink synchronous phase III,
That is, perform step 107.
Step 107, according to it is presetting when cycle estimator P2 receive synchronizing signal, based on synchronous signal obtaining
TA simultaneously performs the operation of the 3rd uplink synchronous according to the TA of acquisition；
This step belongs to the phase III of uplink synchronous, in the second stage of uplink synchronous, by with
Less synchronizing signal sends cycle P1 and receives synchronizing signal to realize Fast synchronization, in the phase III,
The synchronizing signal of user terminal is received according to a larger timing estimation cycle P2, with synchronize with
Track.And cycle P1 is sent because timing estimation cycle P2 is more than or equal to synchronizing signal, therefore, it is possible to
Prevent that the availability of frequency spectrum declines caused by user terminal moves to a certain extent.
The operation of 3rd uplink synchronous is performed according to the TA of acquisition, specifically includes following steps：
C1, the TA addition SYN registers by acquisition, if TA number in SYN register is less than
M, then step C2 is performed, if TA number in SYN register is equal to M, perform step C3；
If the uplink service of C2, user terminal is in uplink authorization illegal state, return to step 101 is held
OK, otherwise, return and perform step 107；
C3, calculate M TA average value in SYN register and empty SYN register, if average value
More than default 3rd step-length step3, then TA is arranged to preset duration T, if average value is less than-step3,
TA is then arranged to-T, if TA adjusted values are located at section [- step3, step3], then TA is arranged to 0.
After TA values, base station is also needed to TA value passage time advance commands (Timing Advance
Command user terminal) is handed down to, user terminal is based on TA values and carries out uplink synchronous adjustment.
In the present invention, whether according to the TA of SR signal acquisitions, according further to synchronous signal obtaining
TA, the TA of acquisition is added in SYN register, when the TA accumulations in SYN register to one
When determining number M, TA adjusted values are calculated using M TA in SYN register, and according to TA
Adjusted value determines the need for carrying out uplink synchronous adjustment, in the phase III of uplink synchronous, if TA
Adjusted value is more than step3 or less than-step3, then is required to carry out uplink synchronous adjustment, otherwise, is not required to
Uplink synchronous adjustment is carried out, TA is arranged to 0.
Step 108, judge whether the uplink service of user terminal is in uplink authorization illegal state, if
It is then to return and perform step 101, otherwise, returns and perform step 107；
After step 107 performs the operation of the 3rd uplink synchronous, it is also necessary to judge the upper industry of user terminal
Whether business is in uplink authorization illegal state, if it is, need to return to the first stage of uplink synchronous,
Namely return to step 101 performs, if it is not, then need to continue return to step 107, continue row it is synchronous with
Track.
In the embodiment of the present invention shown in Fig. 1, in order to calculate TA adjusted values, the TA of acquisition is added same
When walking register, the time that the TA of acquisition is added to SYN register is also recorded.
The method that TA adjusted values are calculated using M TA in SYN register is specifically as follows：According to user
The translational speed of terminal calculates time measure value Thread, and SYN register will be added according to the time measure value
In M TA graduation to first group and second group, calculate the average value Tavg1 of TA in first group respectively
And in second group TA average value Tavg2, and according to below equation calculate TA adjusted values：
TA adjusted values=(1- λ) × Tavg1+ λ × Tavg2, wherein, λ is regulation coefficient, and span is
Section [0,1]；
Where it is assumed that according to the sequencing for adding SYN register, M TA addition SYN register when
Between be respectively：Time_1, Time_2 ..., Time_M, then if Time_M and Time_i difference
Value is more than Thread, then draws the TA for corresponding to Time_i in SYN register to first group, otherwise, will
TA in SYN register corresponding to Time_i is drawn to second group.
Thread calculating is the translational speed according to user terminal, can be in advance based on translational speed division and move
Dynamic grade, each mobile corresponding translational speed scope of grade and a level metrics value, as shown in Table 1
Example,
Table one
As can be seen that in Table 1, translational speed is 1 in 0 user terminal for arriving 3km/h, its movement grade,
Corresponding level metrics value a value is 3；Translational speed is in 3 user terminals for arriving 30km/h, its movement
Grade is 2, corresponding level metrics value a value position 30；Translational speed is in 30 users for arriving 60km/h
Terminal, it is 3 that it, which moves grade, corresponding level metrics value a value position 60；Translational speed arrives 60
120km/h user terminal, it is 4 that it, which moves grade, corresponding level metrics value a value position 120；Move
Dynamic speed is 5 in 120 user terminals for arriving 300km/h, its movement grade, corresponding level metrics value a's
Value position 300.
The method that time measure value Thread is calculated according to the translational speed of user terminal is specially：
The mobile grade of user terminal and the grade degree of the movement grade are determined according to the translational speed of user terminal
Value a, and Thread is calculated using below equation：
Wherein, c is the light velocity, and fs is sampling rate.
Uplink synchronous method of adjustment of the embodiment of the present invention is described in detail above, the present invention also provides
A kind of uplink synchronous adjusting apparatus, is described in detail with reference to Fig. 2.
Referring to Fig. 2, Fig. 2 is the structural representation of uplink synchronous adjusting apparatus of the embodiment of the present invention, such as Fig. 2
Shown, the device includes：First synchronization unit 201, the second synchronization unit 202, the 3rd synchronization unit 203；
Wherein,
First synchronization unit 201, for receiving the resource request SR signals of user terminal, based on SR signals
Obtain TA and the operation of the first uplink synchronous is performed according to the TA of acquisition, if at the uplink service of user terminal
In uplink authorization illegal state, then the operation for performing the SR signals for receiving user terminal is returned to, otherwise, notice
Second synchronization unit 202 performs sends cycle P1 reception synchronizing signal according to synchronizing signal；
Second synchronization unit 202, for receiving the notice of the first synchronization unit 201, sent according to synchronizing signal
Cycle P1 receives synchronizing signal, and it is up to perform second based on synchronous signal obtaining TA and according to the TA of acquisition
Simultaneously operating, if user terminal is in the first mobile status, if the uplink service of user terminal is in upper
Row authorizes illegal state, then notifies the first synchronization unit 201 to perform the operation for the SR signals for receiving user terminal,
Otherwise, the operation for sending cycle P1 according to synchronizing signal and receiving synchronizing signal is performed again；If user terminal
In the second mobile status, if then the uplink service of user terminal is in uplink authorization illegal state, notify
First synchronization unit 201 performs the operation for the SR signals for receiving user terminal, otherwise, notifies that the 3rd is synchronous single
Member 203 perform according to it is presetting when cycle estimator P2 receive the operation of synchronizing signal；
3rd synchronization unit 203, for receiving the notice of the second synchronization unit 202, according to default timing estimation
Cycle P2 receives synchronizing signal, and it is up to perform the 3rd based on synchronous signal obtaining TA and according to the TA of acquisition
Simultaneously operating, if the uplink service of user terminal is in uplink authorization illegal state, notify that first is synchronous
Unit 201 perform receive user terminal SR signals operation, otherwise, perform again according to it is presetting when estimate
Count the operation of cycle P2 reception synchronizing signal；
Wherein, P1 is less than or equal to P2.
In Fig. 2 shown devices,
First synchronization unit, when performing the operation of the first uplink synchronous according to the TA of acquisition, it is used for：It will obtain
The TA taken adds SYN register, if TA number in SYN register is less than preset cumulative number M,
If then the uplink service of user terminal is in uplink authorization illegal state, performs receive user terminal again
The operation of SR signals, otherwise, notify the second synchronization unit 202 performs to send cycle P1 according to synchronizing signal
Receive the operation of synchronizing signal；If TA number in SYN register is equal to M, SYN register is utilized
In M TA calculate TA adjusted values and empty SYN register, if TA adjusted values are more than the default first step
Long step1, then TA is arranged to preset duration T, if TA adjusted values are less than-step1, TA set
For-T, if TA adjusted values are located at section [- step1, step1], then TA is arranged to 0；
Second synchronization unit 202, when performing the operation of the second uplink synchronous according to the TA of acquisition, it is used for：
The TA of acquisition is added into SYN register, if TA number in SYN register is less than M, if user
The uplink service of terminal is in uplink authorization illegal state, then notifies the first synchronization unit 201 performs to receive to use
The operation of the SR signals of family terminal, otherwise, perform send the reception of cycle P1 synchronously according to synchronizing signal again
The operation of signal；If TA number in SYN register is equal to M, the M in SYN register is utilized
Individual TA calculates TA adjusted values and empties SYN register, if TA adjusted values are more than default second step-length step2,
TA is then arranged to preset duration T, if TA adjusted values are less than-step2, TA is arranged to-T, if TA
Adjusted value is located at section [- step2, step2], then TA is arranged into 0；
3rd synchronization unit 203, when performing the operation of the 3rd uplink synchronous according to the TA of acquisition, it is used for：
The TA of acquisition is added into SYN register, if TA number in SYN register is less than M, if user
The uplink service of terminal is in uplink authorization illegal state, then notifies the first synchronization unit 201 performs to receive to use
The operation of the SR signals of family terminal, otherwise, perform again according to it is presetting when cycle estimator P2 receive it is synchronous
The operation of signal；If TA number in SYN register is equal to M, M are calculated in SYN register
TA average value simultaneously empties SYN register, if average value is more than default 3rd step-length step3, TA is set
Preset duration T is set to, if average value is less than-step3, TA is arranged to-T, if TA adjusted values are located at area
Between [- step3, step3], then TA is arranged to 0.
In Fig. 2 shown devices,
When second synchronization unit 202 judges the mobile status residing for user terminal, it is used for：If nearest one
It is 0 that TA values are set during secondary execution the second uplink synchronous operation, and is connected according to synchronizing signal transmission cycle P1
Continued access receives more than M synchronizing signal, it is determined that and user terminal is in the second mobile status, otherwise, it determines
User terminal is in the first mobile status.
In Fig. 2 shown devices,
First synchronization unit 201, the second synchronization unit 202, the 3rd synchronization unit 203 are by the TA of acquisition
When adding SYN register, the time that the TA of acquisition is added to SYN register is recorded；
First synchronization unit 201, the second synchronization unit 202 utilize the M TA meters in SYN register
When calculating TA adjusted values, it is used for：Time measure value Thread is calculated according to the translational speed of user terminal, according to
The time measure value to first group and second group, counts the M TA graduation added in SYN register respectively
The average value Tavg1 and TA in second group of TA in first group average value Tavg2 are calculated, and according to following public affairs
Formula calculates TA adjusted values：
TA adjusted values=(1- λ) × Tavg1+ λ × Tavg2, wherein, λ is regulation coefficient, and span is
Section [0,1]；
Where it is assumed that according to the sequencing for adding SYN register, M TA addition SYN register when
Between be respectively：Time_1, Time_2 ..., Time_M, then if Time_M and Time_i difference
Value is more than Thread, then draws the TA for corresponding to Time_i in SYN register to first group, otherwise, will
TA in SYN register corresponding to Time_i is drawn to second group.
Fig. 2 shown devices also include dispensing unit 204；
The dispensing unit 204, for being in advance based on the mobile grade of translational speed division, each mobile grade pair
Answer a translational speed scope and a level metrics value；
First synchronization unit 201, the second synchronization unit 202, calculated according to the translational speed of user terminal
During time measure value Thread, it is used for：
The mobile grade of user terminal and the grade degree of the movement grade are determined according to the translational speed of user terminal
Value a, and Thread is calculated using below equation：
Wherein, c is the light velocity, and fs is sampling rate.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all at this
Within the spirit and principle of invention, any modification, equivalent substitution and improvements done etc., it should be included in
Within the scope of protection of the invention.
Claims (10)
1. a kind of uplink synchronous method of adjustment, it is characterised in that this method includes：
Step A, the resource request SR signals of user terminal are received, the operation of the first uplink synchronous is performed based on SR signal acquisitions TA and according to the TA of acquisition, if the uplink service of user terminal is in uplink authorization illegal state, returns and performs step A, otherwise, step B is performed；
Step B, cycle P1 reception synchronizing signal is sent according to synchronizing signal, the operation of the second uplink synchronous is performed based on synchronous signal obtaining TA and according to the TA of acquisition, if user terminal is in the first mobile status, then if the uplink service of user terminal is in uplink authorization illegal state, then return to step A is performed, otherwise, return and perform step B；If user terminal is in the second mobile status, if the uplink service of user terminal is in uplink authorization illegal state, returns and perform step A, otherwise, perform step C；
Step C, according to it is presetting when cycle estimator P2 receive synchronizing signal, the operation of the 3rd uplink synchronous is performed based on synchronous signal obtaining TA and according to the TA of acquisition, if the uplink service of user terminal is in uplink authorization illegal state, return to step A is performed, otherwise, return and perform step C；
Wherein, P1 is less than or equal to P2.
2. according to the method for claim 1, it is characterised in that
It is according to the method that the TA of acquisition the first uplink synchronous of execution operates：The TA of acquisition is added into SYN register, if TA number in SYN register is less than preset cumulative number M, if the uplink service of user terminal is in uplink authorization illegal state, returns and performs step A, otherwise, perform step B；If TA number in SYN register is equal to M, then TA adjusted values are calculated using M TA in SYN register and empty SYN register, if TA adjusted values are more than default first step-length step1, TA is then arranged to preset duration T, if TA adjusted values are less than-step1, TA is arranged to-T, if TA adjusted values are located at section [- step1, step1], then TA is arranged to 0；
It is according to the method that the TA of acquisition the second uplink synchronous of execution operates：The TA of acquisition is added into SYN register, if TA number in SYN register is less than M, if the uplink service of user terminal is in uplink authorization illegal state, return to step A is performed, and otherwise, is returned and is performed step B；If TA number in SYN register is equal to M, then TA adjusted values are calculated using M TA in SYN register and empty SYN register, if TA adjusted values are more than default second step-length step2, TA is then arranged to preset duration T, if TA adjusted values are less than-step2, TA is arranged to-T, if TA adjusted values are located at section [- step2, step2], then TA is arranged to 0；
It is according to the method that the TA of acquisition the 3rd uplink synchronous of execution operates：The TA of acquisition is added into SYN register, if TA number in SYN register is less than M, if the uplink service of user terminal is in uplink authorization illegal state, return to step A is performed, and otherwise, is returned and is performed step C；If TA number in SYN register is equal to M, then calculate M TA average value in SYN register and empty SYN register, if average value is more than default 3rd step-length step3, TA is then arranged to preset duration T, if average value is less than-step3, TA is arranged to-T, if TA adjusted values are located at section [- step3, step3], then TA is arranged to 0.
3. according to the method for claim 2, it is characterised in that
The method for judging the mobile status residing for user terminal is：If the last time sets TA values when performing the operation of the second uplink synchronous be 0, and send cycle P1 according to synchronizing signal and continuously receive more than M synchronizing signal, then determine that user terminal is in the second mobile status, otherwise, it determines user terminal is in the first mobile status.
4. according to the method for claim 2, it is characterised in that
When the TA of acquisition is added into SYN register, the time that the TA of acquisition is added to SYN register is recorded；
Using in SYN register M TA calculate TA adjusted values method be：Time measure value Thread is calculated according to the translational speed of user terminal, according to the time measure value by the M TA graduation added in SYN register to first group and second group, the average value Tavg1 and TA in second group of TA in first group average value Tavg2 are calculated respectively, and calculate TA adjusted values according to below equation：
TA adjusted values=(1- λ) × Tavg1+ λ × Tavg2, wherein, λ is regulation coefficient, and span is section [0,1]；
Where it is assumed that according to the sequencing for adding SYN register, the time of M TA addition SYN register is respectively：Time_1, Time_2 ..., Time_M, then if Time_M and Time_i difference is more than Thread, then by SYN register correspond to Time_i TA draw to first group, otherwise, by SYN register correspond to Time_i TA draw to second group.
5. according to the method for claim 4, it is characterised in that
It is in advance based on the mobile grade of translational speed division, each mobile corresponding translational speed scope of grade and a level metrics value；
The method that time measure value Thread is calculated according to the translational speed of user terminal is：
The mobile grade of user terminal and the level metrics value a of the movement grade are determined according to the translational speed of user terminal, and Thread is calculated using below equation：
Wherein, c is the light velocity, and fs is sampling rate.
6. a kind of uplink synchronous adjusting apparatus, it is characterised in that the device includes：First synchronization unit, the second synchronization unit, the 3rd synchronization unit；
First synchronization unit, for receiving the resource request SR signals of user terminal, the operation of the first uplink synchronous is performed based on SR signal acquisitions TA and according to the TA of acquisition, if the uplink service of user terminal is in uplink authorization illegal state, then return to the operation for performing the SR signals for receiving user terminal, otherwise, notify the second synchronization unit performs to send cycle P1 reception synchronizing signal according to synchronizing signal；
Second synchronization unit, for receiving the notice of the first synchronization unit, cycle P1 reception synchronizing signal is sent according to synchronizing signal, the operation of the second uplink synchronous is performed based on synchronous signal obtaining TA and according to the TA of acquisition, if user terminal is in the first mobile status, then if the uplink service of user terminal is in uplink authorization illegal state, the first synchronization unit is then notified to perform the operation for the SR signals for receiving user terminal, otherwise, the operation for sending cycle P1 according to synchronizing signal and receiving synchronizing signal is performed again；If user terminal is in the second mobile status, then if the uplink service of user terminal is in uplink authorization illegal state, the first synchronization unit is then notified to perform the operation for the SR signals for receiving user terminal, otherwise, notify the 3rd synchronization unit perform according to it is presetting when cycle estimator P2 receive the operation of synchronizing signal；
3rd synchronization unit, for receiving the notice of the second synchronization unit, according to it is presetting when cycle estimator P2 receive synchronizing signal, the operation of the 3rd uplink synchronous is performed based on synchronous signal obtaining TA and according to the TA of acquisition, if the uplink service of user terminal is in uplink authorization illegal state, then notify the first synchronization unit to perform the operation for the SR signals for receiving user terminal, otherwise, perform again according to it is presetting when cycle estimator P2 receive the operation of synchronizing signal；
Wherein, P1 is less than or equal to P2.
7. device according to claim 6, it is characterised in that
First synchronization unit, when performing the operation of the first uplink synchronous according to the TA of acquisition, it is used for：The TA of acquisition is added into SYN register, if TA number in SYN register is less than preset cumulative number M, then if the uplink service of user terminal is in uplink authorization illegal state, the operation for the SR signals for receiving user terminal is then performed again, otherwise, the second synchronization unit is notified to perform the operation for sending cycle P1 according to synchronizing signal and receiving synchronizing signal；If TA number in SYN register is equal to M, then TA adjusted values are calculated using M TA in SYN register and empty SYN register, if TA adjusted values are more than default first step-length step1, TA is then arranged to preset duration T, if TA adjusted values are less than-step1, TA is arranged to-T, if TA adjusted values are located at section [- step1, step1], then TA is arranged to 0；
Second synchronization unit, when performing the operation of the second uplink synchronous according to the TA of acquisition, it is used for：The TA of acquisition is added into SYN register, if TA number in SYN register is less than M, then if the uplink service of user terminal is in uplink authorization illegal state, the first synchronization unit is then notified to perform the operation for the SR signals for receiving user terminal, otherwise, the operation for sending cycle P1 according to synchronizing signal and receiving synchronizing signal is performed again；If TA number in SYN register is equal to M, then TA adjusted values are calculated using M TA in SYN register and empty SYN register, if TA adjusted values are more than default second step-length step2, TA is then arranged to preset duration T, if TA adjusted values are less than-step2, TA is arranged to-T, if TA adjusted values are located at section [- step2, step2], then TA is arranged to 0；
3rd synchronization unit, when performing the operation of the 3rd uplink synchronous according to the TA of acquisition, it is used for：The TA of acquisition is added into SYN register, if TA number in SYN register is less than M, then if the uplink service of user terminal is in uplink authorization illegal state, the first synchronization unit is then notified to perform the operation for the SR signals for receiving user terminal, otherwise, perform again according to it is presetting when cycle estimator P2 receive the operation of synchronizing signal；If TA number in SYN register is equal to M, then calculate M TA average value in SYN register and empty SYN register, if average value is more than default 3rd step-length step3, TA is then arranged to preset duration T, if average value is less than-step3, TA is arranged to-T, if TA adjusted values are located at section [- step3, step3], then TA is arranged to 0.
8. device according to claim 7, it is characterised in that
When second synchronization unit judges the mobile status residing for user terminal, it is used for：If the last time sets TA values when performing the operation of the second uplink synchronous be 0, and send cycle P1 according to synchronizing signal and continuously receive more than M synchronizing signal, then determine that user terminal is in the second mobile status, otherwise, it determines user terminal is in the first mobile status.
9. device according to claim 7, it is characterised in that
When the TA of acquisition is added SYN register by first synchronization unit, the second synchronization unit, the 3rd synchronization unit, the time that the TA of acquisition is added to SYN register is recorded；
When first synchronization unit, the second synchronization unit utilize the M TA calculating TA adjusted values in SYN register, it is used for：Time measure value Thread is calculated according to the translational speed of user terminal, according to the time measure value by the M TA graduation added in SYN register to first group and second group, the average value Tavg1 and TA in second group of TA in first group average value Tavg2 are calculated respectively, and calculate TA adjusted values according to below equation：
TA adjusted values=(1- λ) × Tavg1+ λ × Tavg2, wherein, λ is regulation coefficient, and span is section [0,1]；
Where it is assumed that according to the sequencing for adding SYN register, the time of M TA addition SYN register is respectively：Time_1, Time_2 ..., Time_M, then if Time_M and Time_i difference is more than Thread, then by SYN register correspond to Time_i TA draw to first group, otherwise, by SYN register correspond to Time_i TA draw to second group.
10. device according to claim 9, it is characterised in that the device also includes dispensing unit；
The dispensing unit, for being in advance based on the mobile grade of translational speed division, each mobile corresponding translational speed scope of grade and a level metrics value；
First synchronization unit, the second synchronization unit, when calculating time measure value Thread according to the translational speed of user terminal, it is used for：
The mobile grade of user terminal and the level metrics value a of the movement grade are determined according to the translational speed of user terminal, and Thread is calculated using below equation：
Wherein, c is the light velocity, and fs is sampling rate.
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