CN105848278B - Third party's instrument handles the nonsynchronous method of multiple terminals uplink when monitoring lte-a system - Google Patents
Third party's instrument handles the nonsynchronous method of multiple terminals uplink when monitoring lte-a system Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W56/00—Synchronisation arrangements
- H04W56/0005—Synchronisation arrangements synchronizing of arrival of multiple uplinks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
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- H04W74/08—Non-scheduled access, e.g. ALOHA
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Abstract
A kind of processing multiple terminals uplink nonsynchronous method when monitoring lte-a system for third party's instrument is claimed in the present invention, is related to mobile communication technology field.For lte-a system multiple terminals and the nonsynchronous problem of third party's instrument uplink, the invention firstly uses random access procedures, measure uplink frame adjustment amount synchronization time of each terminal Yu base station and third party's instrument, the transmission boundary for the uplink frame adjustment amount synchronization time adjustment uplink frame that each terminal is indicated according to base station.Then third party's instrument obtains uplink frame adjustment amount synchronization time of each terminal and base station, is compared by the adjustment magnitude measured with oneself, obtains the timing relationship of each terminal Yu the instrument, the complete sub-frame of uplink of all terminals is received using timing relationship.Last third party's instrument extracts data, the upstream data that each terminal of independent parsing is sent according to the timing relationship of each terminal and the instrument respectively.It can be effectively solved multiple terminals and the nonsynchronous problem of third party's instrument uplink.
Description
Technical field
It is how whole in monitoring lte-a system that the present invention relates to mobile communication technology fields more particularly to third party's detection instrument
How to solve the problems, such as that multiple terminals and third party's instrument uplink are nonsynchronous when end.
Background technique
LTE-A (Long Term Evolution-Advanced, enhanced long term evolution) is used as LTE (Long Term
Evolution, long term evolution) smooth evolution, very high compatibility is not only maintained with LTE, also hardware circuit solution is mentioned
Requirements at the higher level, i.e. the peak-peak rate of downlink 1Gbit/s and uplink 500Mbit/s are gone out.Uplink/downlink antenna configuration is maximum to support 8
× 8, uplink maximum supports the system parameter of 4 × 4, LTE-A to be greatly improved compared with LTE.Lte-a system requires to provide more
Big power system capacity and lower time delay.
In lte-a system, it is desirable that the frame boundaries of the uplink signal of all terminals reach base station receiving end when
Time is aligned with the frame boundaries of down link signal, is just avoided that the information at base station received normal moment is prolonged with experience in this way
The information to lag overlaps caused interference.And due to multiple terminals between base station at a distance from be different, that is to say, that
The airborne spread distance that the uplink signal of each terminal reaches base station is not quite similar, and which results in each terminals
The frame boundaries of uplink signal are reached when base station receives and can not be aligned, in order to solve this problem, lte-a system
Using uplink synchronous technology.
TA (Timing Advance, Timing Advance) is introduced during uplink synchronous to send to instruction terminal
The time in advance or postponed is needed when downlink signal, terminal is adjusted according to TA to the uplink signal time is sent.If TA
Greater than 0, illustrate that terminal needs shift to an earlier date the time for sending uplink signal, is sent conversely, then illustrating that terminal needs to postpone
The time of row signal.So that the frame boundaries of terminal signaling are alignment when reaching base station, reach uplink synchronous.
Uplink synchronous technology is mainly to be completed by random access, and random access synchronizing process is mainly completed to connect at random
Enter leading send and receive；The calculating of Timing Advance；Random access response sends and receives.It is described in detail below: eventually
End by PRACH (Physical Random Access Channel, Physical Random Access Channel) to base station send one with
Machine access lead sequence requests to be accessed, and base station detected the leader sequence and mentioned with this timing for estimating itself and terminal room
Preceding amount, and terminal Timing Advance is informed by random access response order, terminal adjusts uplink according to TA value is received
Signal sending time reaches uplink synchronous.
China is just in all-round construction TD-LTE network at present, and LTE-A measuring instrument of eating dishes without rice or wine supports that LTE-A eats dishes without rice or wine L1, L2, L3
Protocol stack monitoring and cross-layer association analysis, take real-time tracking mode monitor multiple terminals business establish, signaling procedure sum number
According to flow, analysing terminal business conduct and network problem.LTE-A eats dishes without rice or wine measuring instrument will construction subsequent to China and optimization TD-
LTE-A network has great importance.
Third party's instrument simultaneously monitors base station and terminal, since terminal is to be believed according to the TA of base station instruction uplink
Number sending instant be timed adjustment, the frame boundaries of the uplink signal of such different terminals are pair when reaching base station receiving end
Neat, and the Timing Advance of different terminals is different under normal circumstances, and since terminal to third party detects instrument
The airborne spread distance of airborne spread distance and terminal to base station be often also it is different, will lead in this way multiple terminals according to
The frame boundaries of the uplink signal of its uplink frame synchronization timing lead for maintaining uplink synchronous to need with base station adjustment reach third
It cannot be aligned when side's detection instrument, that is to say, that each terminal cannot achieve while meeting with base station uplink synchronous and third
The synchronization of Fang Yibiao.
Summary of the invention
Present invention seek to address that the above the deficiencies in the prior art.Propose a kind of effective solution multiple terminals and third party's instrument
The method of the asynchronous problem of table uplink.Technical scheme is as follows:
Third party's instrument handles the nonsynchronous method of multiple terminals uplink when monitoring lte-a system, comprising the following steps:
101, multiple terminals send random access preamble to base station respectively, and third party's instrument is monitored simultaneously；
102, after base station receives each terminal random access preamble, each terminal is measured respectively and maintains uplink same with base station
Walk the uplink frame adjustment amount synchronization time TA neededi, it includes base station synchronization time adjustment amount that base station is sent to each terminal respectively
TAiRandom access response；
Third party's instrument listens to the more a terminals of step 101 and issues the random access preamble of base station, and measures respectively each
The uplink frame adjustment amount synchronization time TA that a terminal and third party's instrument maintain uplink synchronous to needi′；
103, each terminal, which is obtained, adjusts Timing Advance the uplink frame synchronization time for maintaining uplink synchronous to need with base station
TAiAfterwards, according to TAiThe sending time boundary of uplink frame is adjusted, sends uplink signal to base station；
Third party's instrument monitors the accidental access response message that base station is sent in step 102, and obtains terminal and base station dimension
Hold the uplink frame adjustment amount synchronization time TA of uplink synchronous needsi；
104, third party's instrument listens to the TA of base station transmission by comparisoniThe TA measured with step 102i', it obtains eventually
Timing relationship after end adjustment uplink frame sending time with the instrument, receives all terminals according to the timing cases of different terminals
The Timing Advance of complete sub-frame information, i-th of terminal and third party's instrument is expressed as Δ TAi=TAi-TAi', wherein i=
The service terminal quantity of 1,2 ..., n, n expression current base station；
105, third party's instrument is respectively according to the timing adjustment amount Δ TA of the uplink signal of each terminal and the instrumentiIt extracts
Data, the upstream data that each terminal of independent parsing is sent.
Further, when system, which has new terminal to access or be currently accessed terminal, terminates connection, third party's instrument energy
Adjustment Δ TA in timeminWith Δ TAmax, Δ TAminIndicate minimum timing adjustment amount, Δ TAmaxIndicate maximum timing adjustment amount, and
Receive the length of buffer area buffer, and the upstream data that each terminal is sent after energy independent parsing terminal quantity change.
Further, step 104 specifically includes the following steps:
(1) third party's instrument receives the TA of base station transmission by comparisoniWith the TA measuredi', it obtains in terminal adjustment
The Timing Advance of timing relationship after row frame sending time with the instrument, i-th of terminal and the instrument is expressed as Δ TAi=
TAi-TAi', wherein i=1,2 ..., n, n indicate the service terminal quantity of current base station；
(2) third party's instrument is according to the minimum timing adjustment amount Δ TA of each terminalmin=min (Δ TAi, i=1,2 ..., n)
Uplink signal receiving frame synchronous point is adjusted, the opening space of uplink frame data receiver buffer area buffer is Tf'=Tf+ΔTAmax-
ΔTAminA storage unit, each storage unit store one sampled point of uplink signal, wherein Δ TAmax=max (Δ TAi, i=
1,2 ..., n) indicate Δ TAiIn maximum value, Tf=30720 indicate the hits of a subframe；
(3) as | Δ TAmax-ΔTAmin|≥TCPWhen, wherein TCPIndicate the sampling number of cyclic prefix, third party's instrument needs
It will be to close to the mobile physical location in base station direction；
(4) third party's instrument will receive the last Δ TA in buffer when receiving a sub-frame of uplinkmax-ΔTAminIt is a
Sampled point copies to the foremost buffer, then receives T according to sub-frame synchronization point adjustedf=30720 uplink signals are adopted
Sample data, deposit receive the rear T of bufferfIn a memory space.
Further, the upstream data that each terminal of step 105 independent parsing is sent specifically includes (to receive j-th of terminal
Data instance):
(1) it extracts and receives in buffer from Δ TAmax-ΔTAjTo Δ TAmax-ΔTAj+TfThe number of sub frames of -1 storage unit
According to；
(2) it is decoded according to upstream data of the up channel decoding algorithm to j-th of terminal.
Further, when there is new terminal access, the processing of third party's instrument is currently accessed the upper line number of terminal and new terminal
According to specifically including:
(1) new terminal sends random access preamble to base station, and base station receives random access preamble and measures new terminal dimension
Hold uplink synchronous needs uplink frame adjustment amount synchronization time TA, third party's instrument while listening for new terminal be sent to base station with
Machine access lead, and measure uplink frame adjustment amount synchronization time of new terminal and third instrument maintenance uplink synchronous needs
TA′；
(2) base station to new terminal send carry its corresponding time adjustment amount random access response, new terminal according to
Network identity identifies that corresponding access responds and obtain uplink frame adjustment amount synchronization time TA, third party's instrument while basis
Network identity monitors base station and is sent to the random access response of new terminal, and obtains uplink frame synchronization time of new terminal and base station
Adjustment amount TA；
(3) new terminal adjusts the sending time boundary of uplink frame according to uplink frame adjustment amount synchronization time TA, sends uplink
Signal, third party's instrument needs to receive the complete son of all terminals according to the timing cases for being currently accessed terminal and new terminal at this time
Frame information；
(4) it is currently accessed number of terminals n and is updated to n+1, the upstream data sent to wherein some terminal decodes.
Further, step (3) third party's instrument is needed according to the timing cases for being currently accessed terminal and new terminal
Receive the complete sub-frame information of all terminals specifically:
A. the TA ' that third party's instrument is received the TA of base station transmission and measured by comparison, can obtain new terminal tune
The Timing Advance of timing relationship after whole uplink frame sending time with the instrument, new terminal and the instrument is expressed as Δ TA=
TA-TA′；
B. Δ TA is updatedmaxWith Δ TAminValue: if Δ TAmax< Δ TA, then Δ TAmaxIt is updated to Δ TA, otherwise Δ TAmax
It is constant；If Δ TAmin> Δ TA, then Δ TAminIt is updated to Δ TA, otherwise Δ TAminIt is constant.
Further, when being currently accessed terminal k ∈ (1,2 ..., n) terminates connection, third party's instrument processing residue is connect
Enter terminal reception upstream data to specifically include:
(1) Δ TA is updatedmaxWith Δ TAminValue: Δ TAmaxIt is updated to Δ TAmax=max (Δ TAi, i=1,2 ..., n and i
≠k)；ΔTAminIt is updated to Δ TAmin=min (Δ TAi, i=1,2 ..., n and i ≠ k)；
(2) it is currently accessed number of terminals n and is updated to n-1.
It advantages of the present invention and has the beneficial effect that:
The present invention utilizes the relationship of third party's instrument and base station and terminal, can be effectively solved under the monitoring of third party's instrument
Multiple terminal uplinks and the nonsynchronous problem of third party's instrument, and third party's instrument can with terminal quantity variation into
The adjustment of Mobile state, to realize the terminal uplink stationary problem of different number.And the present invention is received by design dynamic
Buffer receives the asynchronous uplink signal of multiple terminals, and woth no need to make additional modification to system, computation complexity is lower.
Detailed description of the invention
Fig. 1 is the relation schematic diagram of third party's instrument and base station and terminal
Fig. 2 is that third party's instrument solves the nonsynchronous overview flow chart of multiple terminals uplink in the present invention
Fig. 3 is that third party's instrument receives buffer and multiple terminals and the instrument timing relationship schematic diagram in the present invention
Specific embodiment
The present invention is being monitored according to the relationship of third party's instrument and base station and terminal as shown in Figure 1, solving third party's instrument
Multiple terminal uplinks and the nonsynchronous problem of third party's instrument in base station and terminal procedures.Below in conjunction with drawings and concrete examples pair
Implementation of the invention is described specifically.Fig. 2 is that solution multiple terminals uplink is nonsynchronous total when third party's instrument monitors lte-a system
Body flow chart.
1. two terminals send random access preamble to base station respectively by PRACH, and base station receives by taking two terminals as an example
Random access preamble simultaneously measures the uplink frame adjustment amount synchronization time TA that the two terminals maintain uplink synchronous to need respectivelyi,
Wherein i=1,2.
2. third party's instrument is sent to the random access preamble of base station while listening for two terminals in step 1, and measures two
The uplink frame adjustment amount synchronization time TA that a terminal and third party's instrument maintain uplink synchronous to needi', wherein i=1,2.
3. base station respectively to two terminals it is independently transmitted carry its corresponding time adjustment amount random access response, two
A terminal identifies corresponding access response according to different network identities and obtains uplink frame adjustment amount synchronization time TAi,
Wherein i=1,2.
4. third party's instrument monitors base station in step 3 according to different network identity identification simultaneously and is sent to two terminals
Random access response obtains the uplink frame adjustment amount synchronization time TA of two terminals and base stationi, wherein i=1,2.
5. two terminals are according to uplink frame adjustment amount synchronization time TAiThe sending time boundary for adjusting uplink frame, in transmission
Row signal.
6. two terminals are being satisfied with base station uplink since third party's instrument and the usual geographical location in base station are inconsistent
It cannot achieve synchronous with third party's instrument while synchronous, third party's instrument needs to be received according to the timing cases of two terminals
The complete sub-frame information of all terminals, as shown in Figure 3.It is specific as follows:
(1) third party's instrument listens to the TA of base station transmission by comparisoniThe TA measured with second stepi', it can obtain
The Timing Advance of timing relationship after terminal adjustment uplink frame sending time with the instrument, i-th of terminal and the instrument indicates
For Δ TAi=TAi-TAi', wherein i=1,2.
(2) Δ TA might as well be set1> Δ TA2, third party's instrument is according to the minimum timing adjustment amount Δ TA of two terminals2Adjustment
Uplink signal receiving frame synchronous point, as Δ TA2When < 0, third party's instrument postpones the initial time for receiving uplink signal；As Δ TA2
When > 0, third party's instrument receives the initial time of uplink signal in advance.It is complete in order to receive all one for being currently accessed terminal
Whole sub-frame of uplink, the opening space of uplink frame data receiver buffer (buffer area) are Tf'=Tf+ΔTA1-ΔTA2A storage is single
Member, each storage unit store one sampled point of uplink signal, wherein Tf=30720 indicate the hits of a subframe.
(3) as | Δ TA1-ΔTA2| > TCPWhen, wherein TCPIndicate the sampling number of cyclic prefix, third party's instrument needs
To close to the mobile physical location in base station direction.
(4) third party's instrument will receive the last Δ TA in buffer when receiving a sub-frame of uplink1-ΔTA2It is a to adopt
Sampling point copies to the foremost buffer, then receives T according to the sub-frame synchronization point after the 6th (2) successive stepf=30720 uplinks
Signal sample data, deposit receive the rear T of bufferfIn a memory space.As shown in Figure 3.
7. third party's instrument is respectively according to the uplink of two terminals based on the reception data received in buffer in step 6
The timing adjustment amount Δ TA of signal and the instrumentiData are extracted, each terminal of independent parsing (is only assigned with uplink comprising current subframe
The terminal of resource, number of terminals are set as m, and m≤2) send upstream data, to wherein some terminal i=1,2 send upper line number
It is specifically included according to decoding:
(1) it extracts and receives Δ TA in buffer1-ΔTAiTo Δ TA1-ΔTAi+TfThe sub-frame data of -1 storage unit.
(2) upstream data of i-th of terminal is decoded according to existing up channel decoding algorithm.
8. the processing of third party's instrument is currently accessed terminal and the upstream data of new terminal is specific when there is new terminal access
Include:
(1) new terminal sends random access preamble to base station, and base station receives random access preamble and measures new terminal dimension
Hold the uplink frame adjustment amount synchronization time TA needed with base station uplink synchronous3.Third party's instrument is sent while listening for new terminal
Random access preamble, and the uplink frame synchronization time for measuring new terminal and third instrument maintenance uplink synchronous needs adjusts
Measure TA3′。
(2) base station to new terminal send carry its corresponding time adjustment amount random access response, new terminal according to
Network identity identifies that corresponding access responds and obtains uplink frame adjustment amount synchronization time TA3.Third party's instrument while root
When monitoring base station according to network identity and be sent to the random access response of new terminal, and obtaining the uplink frame synchronization of new terminal and base station
Between adjustment amount TA3。
(3) new terminal is according to uplink frame adjustment amount synchronization time TA3The sending time boundary of uplink frame is adjusted, uplink is sent
Signal.Third party's instrument needs to receive the complete son of all terminals according to the timing cases for being currently accessed terminal and new terminal at this time
Frame information.It is specific as follows:
Third party's instrument receives the TA of base station transmission by comparison3With the TA measured in step 8 (1)3', it can obtain
Timing relationship after new terminal adjustment uplink frame sending time with the instrument, new terminal and the Timing Advance of the instrument are expressed as
ΔTA3=TA3-TA3′。
A. if Δ TA2> Δ TA3, then third party's instrument is according to Δ TA3Adjust uplink signal frame synchronization point, uplink frame number
T is updated to according to the opening space for receiving bufferf'=Tf+ΔTA1-ΔTA3.When | Δ TA1-ΔTA3| > TCPWhen, third party's instrument
Table is needed to close to the mobile physical location in base station direction.Third party's instrument will receive buffer when receiving a sub-frame of uplink
In last Δ TA1-ΔTA3A sampled point copies to the foremost buffer, then according to sub-frame synchronization point Δ TA adjusted3
Receive Tf=30720 uplink signal sampled datas, deposit receive the rear T of bufferfIn a memory space.
B. if Δ TA1< Δ TA3, then third party's instrument uplink signal frame synchronization point is constant, uplink frame data receiver
The opening space of buffer is updated to Tf'=Tf+ΔTA3-ΔTA2.When | Δ TA3-ΔTA2| > TCPWhen, third party's instrument needs
To close to the mobile physical location in base station direction.Third party's instrument will receive in buffer most when receiving a sub-frame of uplink
Δ TA afterwards3-ΔTA2A sampled point copies to the foremost buffer, then according to sub-frame synchronization point Δ TA2Receive Tf=30720 points
Uplink signal sampled data, deposit receive the rear T of bufferfIn a memory space.
C. if Δ TA2< Δ TA3< Δ TA1, then third party's uplink signal frame synchronization point and uplink frame data receiver
The opening space of buffer is all constant.Execute step 6 (3) and 6 (4).
(4) it is currently accessed number of terminals 2 and is updated to 3.Third party's instrument is respectively according to the uplink signal of three terminals and the instrument
The timing adjustment amount Δ TA of tableiData are extracted, each terminal of independent parsing (is only assigned with the end of ascending resource comprising current subframe
End, number of terminals is set as m, and m≤3) upstream data that sends, to wherein some terminal j=1,2, the 3 upstream datas decodings sent
It specifically includes:
A. if Δ TA1< Δ TA3, extract and receive in buffer from Δ TA3-ΔTAjTo Δ TA3-ΔTAj+Tf- 1 storage
The sub-frame data of unit.It executes step 7 (2).
B. if Δ TA2> Δ TA3Or Δ TA2< Δ TA3< Δ TA1, execute step 7 (1) and 7 (2).
9. third party's instrument processing residue is currently accessed the upper line number of terminal when there is terminal k ∈ (1,2,3) to terminate connection
According to specifically including:
(1) third party's instrument determines the Timing Advance Δ TA for terminating terminal k and the instrumentk∈ΔTAi, wherein i=1,2,
3。
(2) present Δ TA might as well be set2< Δ TA3< Δ TA1.I.e. current third party's instrument is according to Δ TA2Adjust uplink signal
Frame synchronization point, the opening space of uplink frame data receiver buffer are Tf'=Tf+ΔTA1-ΔTA2。
A. if Δ TAk=Δ TA1, then third party's instrument uplink signal frame synchronization point is constant, uplink frame data receiver
The opening space of buffer is updated to Tf'=Tf+ΔTA3-ΔTA2.Third party's instrument will connect when receiving a sub-frame of uplink
Receive the last Δ TA in buffer3-ΔTA2A sampled point copies to the foremost buffer, then according to sub-frame synchronization point Δ TA2
Receive Tf=30720 uplink signal sampled datas, deposit receive the rear T of bufferfIn a memory space.
B. if Δ TAk=Δ TA2, then third party's instrument is according to Δ TA3Adjust uplink signal frame synchronization point, uplink frame number
T is updated to according to the opening space for receiving bufferf'=Tf+ΔTA1-ΔTA3.Third party's instrument is receiving a sub-frame of uplink
When, the last Δ TA in buffer will be received1-ΔTA3A sampled point copies to the foremost buffer, then according to synchronizing sub-frame
Point Δ TA3Receive Tf=30720 uplink signal sampled datas, deposit receive the rear T of bufferfIn a memory space.
C. if Δ TAk=Δ TA3, then third party's instrument uplink signal frame synchronization point and uplink frame data receiver buffer
Opening space it is all constant, execute step 6 (3) and 6 (4).
(3) it is currently accessed number of terminals 3 and is updated to 2.Third party's instrument is respectively according to two terminals of current residual access
The timing adjustment amount Δ TA of uplink signal and the instrumentiData are extracted, each terminal of independent parsing (is only assigned with comprising current subframe
The terminal of ascending resource, number of terminals are set as m, and m≤2) send upstream data, to wherein some terminal j=1,2 send it is upper
Row data decoding specifically includes:
A. if Δ TAk=Δ TA1, extract and receive in buffer from Δ TA3-ΔTAjTo Δ TA3-ΔTAj+Tf- 1 storage
The sub-frame data of unit.It executes step 7 (2).
B. if Δ TAk=Δ TA2Or Δ TAk=Δ TA3, execute step 7 (1) and 7 (2).
The above embodiment is interpreted as being merely to illustrate the present invention rather than limit the scope of the invention.?
After the content for having read record of the invention, technical staff can be made various changes or modifications the present invention, these equivalent changes
Change and modification equally falls into the scope of the claims in the present invention.
Claims (6)
1. third party's instrument handles the nonsynchronous method of multiple terminals uplink when monitoring lte-a system, which is characterized in that including following
Step:
101, multiple terminals send random access preamble to base station, and third party's instrument is monitored simultaneously；
102, after base station receives each terminal random access preamble, each terminal is measured respectively and base station maintains uplink synchronous needs
Uplink frame adjustment amount synchronization time TAi, it includes base station synchronization time adjustment amount TA that base station is sent to each terminaliRandom access
Response；
Third party's instrument listens to the more a terminals of step 101 and issues the random access preamble of base station, and measures each end respectively
The uplink frame adjustment amount synchronization time TA ' that end maintains uplink synchronous to need with third party's instrumenti；
103, each terminal, which is obtained, adjusts timing advance TA the uplink frame synchronization time for maintaining uplink synchronous to need with base stationiAfterwards,
According to TAiThe sending time boundary of uplink frame is adjusted, sends uplink signal to base station；
Third party's instrument monitors the accidental access response message that base station is sent in step 102, and obtains in terminal and base station maintenance
The synchronous uplink frame adjustment amount synchronization time TA needed of rowi；
104, third party's instrument receives the TA of base station transmission by comparisoniThe TA ' measured with step 102i, obtain terminal tune
Timing relationship after whole uplink frame sending time with the instrument receives the complete of all terminals according to the timing cases of different terminals
The Timing Advance of sub-frame information, i-th of terminal and third party's instrument is expressed as Δ TAi=TAi-TA′i, wherein i=1,
The service terminal quantity of 2 ..., n, n expression current base station；Step 104 specifically includes the following steps:
(1) third party's instrument receives the TA of base station transmission by comparisoniWith the TA ' measuredi, obtain terminal and adjust uplink frame
With the timing relationship of the instrument after sending time, the Timing Advance of i-th terminal and the instrument is expressed as Δ TAi=TAi-
TA′i, wherein i=1,2 ..., n, n indicate the service terminal quantity of current base station；
(2) third party's instrument is according to the minimum timing adjustment amount Δ TA of each terminalmin=min (Δ TAi, i=1,2 ..., n) adjustment
Uplink signal receiving frame synchronous point, the opening space of uplink frame data receiver buffer area buffer are T 'f=Tf+ΔTAmax-Δ
TAminA storage unit, each storage unit store one sampled point of uplink signal, wherein Δ TAmax=max (Δ TAi, i=1,
2 ..., n) indicate Δ TAiIn maximum value, Tf=30720 indicate the hits of a subframe；
(3) as | Δ TAmax-ΔTAmin|≥TCPWhen, wherein TCPIndicate cyclic prefix sampling number, third party's instrument need to
Close to the mobile physical location in base station direction；
(4) third party's instrument will receive the last Δ TA in buffer when receiving a sub-frame of uplinkmax-ΔTAminA sampling
Point copies to the foremost buffer, then receives T according to sub-frame synchronization point adjustedf=30720 uplink signal hits
According to deposit receives the rear T of bufferfIn a memory space；
105, third party's instrument is respectively according to the timing adjustment amount Δ TA of the uplink signal of each terminal and the instrumentiExtract data,
The upstream data that each terminal of independent parsing is sent.
2. third party's instrument according to claim 1 handles the nonsynchronous method of multiple terminals uplink when monitoring lte-a system,
It is characterized in that, third party's instrument can be adjusted in time when system, which has new terminal to access or be currently accessed terminal, terminates connection
Whole Δ TAminWith Δ TAmax, Δ TAminIndicate minimum timing adjustment amount, Δ TAmaxIndicate maximum timing adjustment amount and uplink frame
The length of data receiver buffer area buffer, and the upper line number that each terminal is sent after energy independent parsing terminal quantity change
According to.
3. third party's instrument according to claim 1 handles the nonsynchronous method of multiple terminals uplink when monitoring lte-a system,
It is characterized in that, the upstream data that each terminal of step 105 independent parsing is sent specifically includes, when receiving j-th of terminal data:
(1) it extracts and receives in buffer from Δ TAmax-ΔTAjTo Δ TAmax-ΔTAj+TfThe sub-frame data of -1 storage unit；
(2) it is decoded according to upstream data of the up channel decoding algorithm to j-th of terminal.
4. third party's instrument according to claim 2 handles the nonsynchronous method of multiple terminals uplink when monitoring lte-a system,
It is characterized in that, the processing of third party's instrument is currently accessed terminal and the upstream data of new terminal is specific when there is new terminal access
Include:
(1) new terminal sends random access preamble to base station, and base station receives random access preamble and measures new terminal and maintains
The synchronous uplink frame adjustment amount synchronization time TA needed of row, third party's instrument are sent to connecing at random for base station while listening for new terminal
Enter uplink frame adjustment amount synchronization time TA ' that is leading, and measuring new terminal and third instrument maintenance uplink synchronous needs；
(2) base station sends the random access response for carrying its corresponding time adjustment amount to new terminal, and new terminal is according to network
Mark identifies that corresponding access responds and obtain uplink frame adjustment amount synchronization time TA, and third party's instrument is simultaneously according to network
Mark monitors base station and is sent to the random access response of new terminal, and the uplink frame synchronization time for obtaining new terminal and base station adjusts
Measure TA；
(3) new terminal adjusts the sending time boundary of uplink frame according to uplink frame adjustment amount synchronization time TA, sends uplink signal,
Third party's instrument needs the complete subframe for receiving all terminals according to the timing cases for being currently accessed terminal and new terminal to believe at this time
Breath；
(4) it is currently accessed number of terminals n and is updated to n+1, the upstream data sent to wherein some terminal decodes.
5. third party's instrument according to claim 4 handles the nonsynchronous method of multiple terminals uplink when monitoring lte-a system,
It is characterized in that, step (3) third party's instrument needs to receive institute according to the timing cases for being currently accessed terminal and new terminal
There is the complete sub-frame information of terminal specifically:
A. the TA ' that third party's instrument is listened to the TA of base station transmission and measured by comparison can be obtained in new terminal adjustment
The Timing Advance of timing relationship after row frame sending time with the instrument, new terminal and the instrument is expressed as Δ TA=TA-
TA′；
B. Δ TA is updatedmaxWith Δ TAminValue: if Δ TAmax< Δ TA, then Δ TAxamIt is updated to Δ TA, otherwise Δ TAmaxNo
Become；If Δ TAmin> Δ TA, then Δ TAminIt is updated to Δ TA, otherwise Δ TAminIt is constant.
6. third party's instrument according to claim 2 handles the nonsynchronous method of multiple terminals uplink when monitoring lte-a system,
It is characterized in that, when being currently accessed terminal k ∈ (1,2 ..., n) end connection, the remaining access terminal of third party's instrument processing
Upstream data is received to specifically include:
(1) Δ TA is updatedmaxWith Δ TAminValue: Δ TAmaxIt is updated to Δ TAmax=max (Δ TAi, i=1,2 ..., n and i ≠ k)；
ΔTAminIt is updated to Δ TAmin=min (Δ TAi, i=1,2 ..., n and i ≠ k)；
(2) it is currently accessed number of terminals n and is updated to n-1.
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| CN101964699A (en) * | 2009-07-23 | 2011-02-02 | 大唐移动通信设备有限公司 | Timing transmission method and device in FDD mode and communication system |
| CN104868986A (en) * | 2010-02-12 | 2015-08-26 | 交互数字专利控股公司 | WTRU And WTR Method |
| CN102740443A (en) * | 2011-04-02 | 2012-10-17 | 华为技术有限公司 | Method for acquiring secondary timing advance and equipment |
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