CN109168198A - A kind of 4G is tracked down with individual soldier's uplink signal blind detection method - Google Patents
A kind of 4G is tracked down with individual soldier's uplink signal blind detection method Download PDFInfo
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- CN109168198A CN109168198A CN201811284449.XA CN201811284449A CN109168198A CN 109168198 A CN109168198 A CN 109168198A CN 201811284449 A CN201811284449 A CN 201811284449A CN 109168198 A CN109168198 A CN 109168198A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
- H04W76/11—Allocation or use of connection identifiers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0036—Systems modifying transmission characteristics according to link quality, e.g. power backoff arrangements specific to the receiver
- H04L1/0038—Blind format detection
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/08—Testing, supervising or monitoring using real traffic
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
- H04W76/19—Connection re-establishment
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/30—Connection release
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Abstract
The invention belongs to mobile communication 4G technical field, discloses a kind of 4G and track down with individual soldier's uplink signal blind detection method, after target UE is adsorbed by positioning device, the subdistrict frequency point and Physical Cell Identifier PCI for adsorbing the target UE is arranged in decoding individual soldier；The decoding individual soldier and the positioning device down-going synchronous are aligned frame head, start position fixing process；The decoding individual soldier stops respectively towards multiple directions carries out C-RNTI blind examination at the first time, obtains target C-RNTI；The decoding individual soldier chooses the maximum direction of power measurement and advances, and obtains the target UE.Individual soldier is decoded in the present invention, target C-RNTI is obtained by the method for uplink signal blind examination, so as to remove the link tracked down in the prior art in positioning system between positioning device and individual soldier, solve the problems, such as that decoding individual soldier exists in the prior art.
Description
Technical field
The present invention relates to the fields mobile communication 4G more particularly to a kind of 4G to track down with individual soldier's uplink signal blind detection method.
Background technique
It is tracked down in the prior art with the structure of positioning system as shown in Figure 1, in order to position target UE (User
Equipment, terminal) position, using public network base station backstage, target UE is in public network persistent district and the MPS process model for inquiry
It encloses, locating personnel is travelled inwards by edge in the range by after positioning device row to the range inquired, adsorbs positioning device
Target UE after adsorbing UE, by periodically changing TAC (Tracking Area Code, tracking area code), is maintained at UE for a long time
Line, while not stopping and sending out uplink authorization, it does not stop paying out UE and penetrates upstream data, and individual soldier does not stop then to measure on UE using directional aerial
Row signal strength, when directional aerial is towards UE, power can more other directions it is stronger, according to same place, individual soldier's difference direction
Signal strength is different, and operator controls individual soldier and do not stop to gtoal setting to reach positioning purpose.
Current existing three classes individual soldier is as follows:
(1) individual soldier: uplink full bandwidth power measurement is simulated.There are the problem of: individual soldier's surrounding has great amount of terminals to be resident public network
When, different directions power difference meeting very little, it is difficult to judge target direction.
(2) digital individual soldier: positioning vehicle reserved fixed RB (Resource Block, resource block) gives target UE, individual soldier's measurement
Relatively narrow frequency range (frequency range shared by i.e. reserved RB) power, can filter out other frequencies to the shadow of power measurement in this way
It rings, improves signal anti-interference ability by reducing interference.There are the problem of: surrounding has great amount of terminals to stay in public network around individual soldier
When staying, there is around certain probability terminal send signal to public network, using the frequency point as target UE, although directionality
There is certain improvement compared with simulation individual soldier, but it is unstable, it is still difficult to take one's bearings in large user's scene.
(3) decode individual soldier: positioning vehicle reserved fixed RB, MCS (Modulation and Coding Scheme, modulation with
Coding strategy) target UE is given, and by the link in Fig. 1 4. by C-RNTI (CELL Radio Network Tempory
Identity, Cell Radio Network Temporary Identifier/Identity, Cell-RNTI) it is sent to individual soldier, so that individual soldier is demodulated UE uplink signal, when on target UE
Row PUSCH (Physical uplink shared channel, Uplink Shared Channel) signal is interfered to individual soldier's intensity and surrounding
When signal strength is suitable, individual soldier is towards target UE and not towards the two kinds of directions target UE for comparison, preceding due to the reason of directional aerial
Person is decoded into power can be high.At this moment, by it is all solution pair signal strength multiplied by weighted value (as soon as be greater than 1 coefficient), can general
The direction instruction of target UE comes out, in this way, just can solve the more interference scenes of large user, individual soldier's directive property problem.
The shortcomings that decoding individual soldier, includes: in the prior art
1) relative to digital individual soldier and simulation individual soldier, it is more by the link in Fig. 1 4., this means that on positioning vehicle
Add transmitting module, to add receiving module at individual soldier end, increase hardware cost；
2) simultaneously, 4. there are the risks of chain rupture in position fixing process for link, if the C-RNTI of UE occurs in chain breaking process
Change (2. link is rebuild or breaks), then during broken string, all upstream data individual soldiers can not correctly be demodulated, then embodied
The advantage of digital individual soldier is not gone out；
3) since decoding individual soldier needs to increase the transmission module of link 4. in vehicle positioning equipment, old positioning is caused to set
Standby hardware aspect is unable to compatible decoding individual soldier.
Summary of the invention
The link between positioning device and decoding individual soldier causes hardware cost to increase in the prior art, and there are chain rupture wind for link
Danger, link leads to hardware device, and there are compatibility issues.The object of the present invention is to provide a kind of 4G to track down with individual soldier's uplink signal
Blind detection method solves the above problems.
The embodiment of the present application provides a kind of 4G and tracks down with individual soldier's uplink signal blind detection method, comprising the following steps:
Step f, after target UE is adsorbed by positioning device, the subdistrict frequency point and object for adsorbing the target UE is arranged in decoding individual soldier
Manage cell ID PCI；The decoding individual soldier and the positioning device down-going synchronous are aligned frame head, start position fixing process；The solution
Code individual soldier stops respectively towards multiple directions carries out C-RNTI blind examination at the first time, obtains target C-RNTI；The decoding individual soldier choosing
It takes the maximum direction of power measurement to advance, obtains the target UE.
Preferably, the C-RNTI blind examination in the step f the following steps are included:
Step 2.1, the decoding individual soldier set X=RNTIini, i=1, wherein X is temporary variable, RNTIiniFor RNTI
Minimum value is distributed, i is uplink continuous solution to number；
Step 2.2, the decoding individual soldier demodulate upstream data for X as C-RNTI value in each uplink scheduling TTI；
Whether step 2.3, judgement can correctly demodulate upstream data using X；If it is not, entering step 2.4；If so, entering step
Rapid 2.5；
Step 2.4 judges whether X+1 is greater than RNTIend, wherein RNTIendMaximum value is distributed for RNTI；If so, returning
To step 2.1；If it is not, then X=X+1, and it is back to step 2.2；
Step 2.5, i=i+1, and judge whether i is less than m, wherein m is uplink continuous solution to frequency threshold value；If so,
It is back to step 2.2；If it is not, then RNTI=X, target C-RNTI value are X.
Preferably, in the step f further include: in the position fixing process, detects the target UE and whether go offline reconnection,
If so, re-executing the C-RNTI blind examination.
Preferably, the detection target UE whether go offline reconnection the following steps are included:
Step 4.1 after successfully being detected C-RNTI value, sets j=0, wherein j is uplink continuous solution mistake number；The solution
Code individual soldier demodulates upstream data in each uplink scheduling TTI, using C-RNTI；
Whether step 4.2, judgement can correctly demodulate upstream data using C-RNTI；If can, it is back to step 4.1；If
It is no, then j=j+1, and enter step 4.3；
Step 4.3 judges whether j is less than n, wherein n is uplink continuous solution mistake frequency threshold value；If so, being back to step
4.2；If not, then it is assumed that the target UE goes offline reconnection.
Preferably, before the step f, further includes:
Step a, the described positioning device sends short message to the target UE, and the target UE establishes RRC connection；
Step b, target UE described in the background query by public network base station resident cell and cell coverage area；
Step c, the described positioning device row establishes co-frequency cell to the cell coverage area；
Step d, the described positioning device moves in the cell coverage area, reselects to the target UE described
The co-frequency cell that positioning device is established；
Step e, the described target UE initiating updating of tracking area TAU.
Preferably, in the step e, the target UE initiating updating of tracking area TAU includes: to establish RRC connection, carries out body
Part inquiry；Wherein, setting C-RNTI range of distribution in RRC connection is established described；Pass through inquiry knot in the ID inquiring
Fruit distinguishes target UE and non-targeted UE.
Preferably, the C-RNTI range of distribution is [RNTIini, RNTIend], wherein RNTIend-RNTIini>150。
Preferably, for the non-targeted UE, the positioning device sends tracking area refuse information and RRC release message；
For the target UE, the positioning device sends DCI0 information, and the number of positions of MCS and RB in the DCI0 information are solid
It is fixed.
Preferably, in the step f, after target UE is adsorbed by positioning device, for TDD, the decoding individual soldier is also set up
Adsorb the uplink proportion of the target UE.
One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:
In the embodiment of the present application, middle positioning device is temporarily marked cell-radio network by link compared with the existing technology
Know the method that C-RNTI is sent to decoding individual soldier, decoding individual soldier obtains target C- by the method for uplink signal blind examination in the present invention
RNTI is solved existing so as to remove the link tracked down in the prior art in positioning system between positioning device and individual soldier
In technology decode individual soldier there are the problem of.The present invention solves existing skill under the premise of not influencing to decode the directionality of individual soldier
Defect existing for individual soldier is decoded in art, tracks down use particularly suitable for 4G, can be guaranteed to support the work of China's public front, effectively be protected
The interests of the people are protected, Redeem large economic loss has important application value.
Detailed description of the invention
It, below will be to needed in embodiment description in order to illustrate more clearly of the technical solution in the present embodiment
Attached drawing is briefly described, it should be apparent that, the accompanying drawings in the following description is one embodiment of the present of invention, general for this field
For logical technical staff, without creative efforts, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is the schematic diagram tracked down in the prior art with positioning system；
Fig. 2 is that a kind of 4G provided in an embodiment of the present invention is tracked down with C-RNTI blind examination in individual soldier's uplink signal blind detection method
Flow chart；
Fig. 3 is that a kind of 4G provided in an embodiment of the present invention is tracked down with the process adsorbed in individual soldier's uplink signal blind detection method
Figure.
Fig. 4 is that a kind of 4G provided in an embodiment of the present invention is tracked down with judge C-RNTI mistake in individual soldier's uplink signal blind detection method
The flow chart of effect.
Specific embodiment
In order to better understand the above technical scheme, in conjunction with appended figures and specific embodiments to upper
Technical solution is stated to be described in detail.
The present invention proposes, when positioning device does not obtain target UE safe context, positions the specific of the position target UE
Principle realizes that process is as follows:
A. positioning device sends out a short message to target UE, and target UE can establish RRC connection；
B. locating personnel covers model by the background query target UE of public network base station resident cell and cell geography
It encloses；
C. locating personnel by (vehicle-mounted) row of positioning device to cell coverage area, establish co-frequency cell (positioning device TAC and
Public network is different)；
D. allow mobile unit to move in cell range, when move to positioning device cell signal it is stronger when, target UE can be weighed
Select the cell established to positioning device.From public network backstage, available public network may use TAC, and the TAC of positioning device must not
It is in the TAI list (tracking area list) of public network, i.e., inconsistent with all public network TAC, if in the TAI list of public network
In, target UE would not be initiated the connection in idle, can not be fixed upstream data authorization (in Fig. 3 the 6. walk), can not be positioned user；
E.UE initiate TAU (Tracking Area Update, tracing section updating) process such as Fig. 3, step 1.~5., for
All UE are consistent, wherein 1.~3. established for RRC (Radio Resource Control, wireless heterogeneous networks) connection
Journey includes random access procedure during this, in order to faster retrieve correct C-RNTI in subsequent blind examination process, it is necessary to
C-RNTI quantity allotted is limited, it, can be by C- since non-targeted UE is entirely linked into time of release process within 150ms
RNTI range of distribution is limited in [RNTIini, RNTIend], wherein RNTIend-RNTIini> 150, specific value can basis
The practical release flow time that is linked into of the non-targeted user of different manufacturers is formulated；5. passing through inquiry 4. being identity lookup procedure
As a result target and non-targeted UE are distinguished, for target and non-targeted UE, before 5 steps it is consistent, for non-targeted UE, positioning device meeting
Send TAU reject (tracking area refusal) message and RRC release (RRC release) message；For target UE, process can be such as
Fig. 3 does not stop and sends out DCI0, MCS and RB number of positions is all fixed in DCI0；
F. after target UE is adsorbed by positioning device, the frequency point and PCI of adsorbed target UE cell are set on individual soldier, uplink is matched
Than (only TDD needs), then with positioning device down-going synchronous, it is aligned frame head, so that it may start position fixing process, after getting off, forward
4 directions in left and right afterwards, each direction stop at least 1s, the walking of power measurement maximum direction are chosen, until finding target；Each side
It is that the blind examination scheme of this paper is time-division blind examination, i.e., each uplink TTI (transmissiontime to the reason for stopping 1s or more
Interval, Transmission Time Interval) 1 C-RNTI of detection, until finding correct C-RNTI.LTE system, each
1000 differences C-RNTI, TDD can be attempted by taking the 2:7 of public network proportion as an example by having 1000TTI, FDD to have in TTI1ms, 1s, can
, can be 1 time by all C-RNTI polls to attempt 200 difference C-RNTI, least ideally, can also it find correct
C-RNTI.C-RNTI blind examination process such as Fig. 2:
1. PCI is arranged in individual soldier, frequency point is finished, life's work, is RNTI by temporary variable X valueini, i value is 1,
RNTIiniMinimum value is distributed for RNTI, i is uplink continuous solution to number.
2. individual soldier is in each uplink scheduling TTI, using in known uplink frequency point, it is known that PCI, and 6. with Fig. 3
The identical MCS and RB number of positions information of DCI0 in step, X demodulate upstream data as C-RNTI value.
3. judging whether X+1 is greater than RNTI if cannot correctly demodulateend, RNTIendMaximum value is distributed for RNTI；Such as
Fruit is greater than, just from the 1. step restart, if it is not greater, then by X=X+1,2. i=1 restarts step.
4. if can correctly demodulate, i=i+1；If i < m, restart step 2. 3.；If i=m, then it is assumed that
RNTI=X, i.e. C-RNTI value are X, and representing continuously correctly to demodulate upstream data by m uplink TTI, show to find target C-
RNTI.Wherein, m is uplink continuous solution to frequency threshold value, that is, reaches m uplink continuous solution pair, illustrates that current RNTI is target
RNTI.M value is to avoid the occurrence of C-RNTI mistake once in a while, the but correct situation of erroneous detection, due to continuous m probability of false detection very little,
Therefore m value is set greater than equal to 2.
In position fixing process, target UE may be dropped reconnection, and after the reconnection that goes offline, C-RNTI can change, Dan Bingxu
Will blind examination C-RNTI again, and detect C-RNTI change procedure such as Fig. 4:
1. individual soldier is in each uplink scheduling TTI, using in known uplink frequency point after confirming C-RNTI value, it is known that
PCI, and upstream data is demodulated with the identical MCS and RB number of positions information of DCI0 in Fig. 3 the 6. step；
2. if 1. energy unsuccessful demodulation, j=0 continue step；J is uplink continuous solution mistake number；
3. if being unable to unsuccessful demodulation, then j=j+1 judges the size of j and n；If j < n, repeatedly step 1.~
③；N is uplink continuous solution mistake frequency threshold value；
4. if j=n (value of n depends on individual soldier and sweeps the uplink TTI quantity for including in the time that one week needs), that is, reach
N times uplink continuous solution is wrong, illustrates that target RNTI has occurred and that modification, it is believed that C-RNTI changes, and needs blind examination C- again
RNTI starts to execute the step in Fig. 2.
In conjunction with above-mentioned two process, the correct blind examination target uplink signal of individual soldier's energy, and restore uplink after the reconnection that goes offline
Signal demodulation.
It should be noted last that the above specific embodiment is only used to illustrate the technical scheme of the present invention and not to limit it,
Although being described the invention in detail referring to example, those skilled in the art should understand that, it can be to the present invention
Technical solution be modified or replaced equivalently, without departing from the spirit and scope of the technical solution of the present invention, should all cover
In the scope of the claims of the present invention.
Claims (9)
1. a kind of 4G is tracked down with individual soldier's uplink signal blind detection method, which comprises the following steps:
Step f, after target UE is adsorbed by positioning device, the subdistrict frequency point for adsorbing the target UE is arranged in decoding individual soldier and physics is small
Area identifies PCI；The decoding individual soldier and the positioning device down-going synchronous are aligned frame head, start position fixing process；The decoding is single
Soldier stops respectively towards multiple directions carries out C-RNTI blind examination at the first time, obtains target C-RNTI；The decoding individual soldier chooses function
Rate measures maximum direction and advances, and obtains the target UE.
2. 4G according to claim 1 is tracked down with individual soldier's uplink signal blind detection method, which is characterized in that in the step f
The C-RNTI blind examination the following steps are included:
Step 2.1, the decoding individual soldier set X=RNTIini, i=1, wherein X is temporary variable, RNTIiniFor RNTI distribution
Minimum value, i are uplink continuous solution to number；
Step 2.2, the decoding individual soldier demodulate upstream data for X as C-RNTI value in each uplink scheduling TTI；
Whether step 2.3, judgement can correctly demodulate upstream data using X；If it is not, entering step 2.4；If so, entering step
2.5；
Step 2.4 judges whether X+1 is greater than RNTIend, wherein RNTIendMaximum value is distributed for RNTI；If so, being back to step
Rapid 2.1；If it is not, then X=X+1, and it is back to step 2.2；
Step 2.5, i=i+1, and judge whether i is less than m, wherein m is uplink continuous solution to frequency threshold value；If so, returning
To step 2.2；If it is not, then RNTI=X, target C-RNTI value are X.
3. 4G according to claim 2 is tracked down with individual soldier's uplink signal blind detection method, which is characterized in that in the step f
Further include: in the position fixing process, detects the target UE and whether go offline reconnection, if so, re-executing the C-RNTI
Blind examination.
4. 4G according to claim 3 is tracked down with individual soldier's uplink signal blind detection method, which is characterized in that described in the detection
Target UE whether go offline reconnection the following steps are included:
Step 4.1 after successfully being detected C-RNTI value, sets j=0, wherein j is uplink continuous solution mistake number；The decoding is single
Soldier demodulates upstream data in each uplink scheduling TTI, using C-RNTI；
Whether step 4.2, judgement can correctly demodulate upstream data using C-RNTI；If can, it is back to step 4.1；If it is not, then
J=j+1, and enter step 4.3；
Step 4.3 judges whether j is less than n, wherein n is uplink continuous solution mistake frequency threshold value；If so, being back to step 4.2；
If not, then it is assumed that the target UE goes offline reconnection.
5. 4G according to claim 2 is tracked down with individual soldier's uplink signal blind detection method, which is characterized in that the step f it
Before, further includes:
Step a, the described positioning device sends short message to the target UE, and the target UE establishes RRC connection；
Step b, target UE described in the background query by public network base station resident cell and cell coverage area；
Step c, the described positioning device row establishes co-frequency cell to the cell coverage area；
Step d, the described positioning device moves in the cell coverage area, and the target UE is made to reselect to the positioning
The co-frequency cell that equipment is established；
Step e, the described target UE initiating updating of tracking area TAU.
6. 4G according to claim 5 is tracked down with individual soldier's uplink signal blind detection method, which is characterized in that in the step e,
The target UE initiating updating of tracking area TAU includes: to establish RRC connection, carries out ID inquiring；Wherein, connect in the RRC that establishes
Connect middle setting C-RNTI range of distribution；Target UE and non-targeted UE is distinguished by query result in the ID inquiring.
7. 4G according to claim 6 is tracked down with individual soldier's uplink signal blind detection method, which is characterized in that the C-RNTI points
It is [RNTI with rangeini, RNTIend], wherein RNTIend-RNTIini>150。
8. 4G according to claim 6 is tracked down with individual soldier's uplink signal blind detection method, which is characterized in that for the non-mesh
UE is marked, the positioning device sends tracking area refuse information and RRC release message；For the target UE, the positioning device
DCI0 information is sent, the number of positions of MCS and RB in the DCI0 information are fixed.
9. 4G according to claim 1 is tracked down with individual soldier's uplink signal blind detection method, which is characterized in that in the step f,
After target UE is adsorbed by positioning device, for TDD, the decoding individual soldier also sets up the uplink proportion for adsorbing the target UE.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109862551A (en) * | 2019-01-08 | 2019-06-07 | 武汉虹信通信技术有限责任公司 | Localization method, individual soldier's terminal and locating base station |
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