CN108243470A - A kind of cell switching method and base station - Google Patents
A kind of cell switching method and base station Download PDFInfo
- Publication number
- CN108243470A CN108243470A CN201611220472.3A CN201611220472A CN108243470A CN 108243470 A CN108243470 A CN 108243470A CN 201611220472 A CN201611220472 A CN 201611220472A CN 108243470 A CN108243470 A CN 108243470A
- Authority
- CN
- China
- Prior art keywords
- rsrp
- cell
- values
- rsrp values
- serving cell
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/08—Reselecting an access point
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/24—Reselection being triggered by specific parameters
- H04W36/30—Reselection being triggered by specific parameters by measured or perceived connection quality data
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
An embodiment of the present invention provides a kind of cell switching method and base station, which includes：Receive the first RSRP values corresponding with serving cell and the 2nd RSRP values corresponding with Target cell that user terminal UE is measured；It is inserted into corresponding penalty value respectively with the 2nd RSRP values to the first RSRP values, to obtain the 3rd RSRP values corresponding with serving cell and the 4th RSRP values corresponding with Target cell；If the 3rd RSRP values meet default cell switching condition with the 4th RSRP values, UE is switched into Target cell by serving cell.Thereby using family terminal between serving cell and Target cell during high-speed mobile, it can keep the upload and download rate of high speed, the probability that user terminal goes offline effectively is reduced, and improves handover success rate of the user terminal between serving cell and Target cell, and then improve user experience.
Description
Technical field
The present embodiments relate to the communications field more particularly to a kind of cell switching method and base stations.
Background technology
Today's society, since traffic accident takes place frequently, the traffic safety that vehicle supervision department increases to long-distance passenger transportation regular bus is protected
Shield dynamics, a variety of administrative and technological means of integrated use ensure traffic safety monitoring and examine.
In view of the above-mentioned problems, the technical solution used in the prior art for：GPS track and localizations record and video monitoring is protected
It deposits.But there are still certain limitation in prior art, such as：GPS positioning is only capable of ensureing regular bus by normal
Route running, and video monitoring preservation be simply possible to use in ex-post analysis or current check, and it also requires ensure monitor video protect
It deposits complete.
At present, the video monitoring passback based on LTE system can make operating personnel return content according to video monitoring and carry out
Dynamic control in ex-post analysis and thing, simultaneously, additionally it is possible to ensure the integrality of monitor video.But in practical operation, by
It is run on expressway soon in long-distance regular bus, therefore, the prior art can deposit in the video monitoring passback based on LTE system
User terminal switch it is uncontrollable, often operate in the low area of coverage or borderline region, cause message transmission rate very low or with
Go offline the problem of falling zero with message transmission rate, thus leads to poor user experience.
Invention content
The embodiment of the present invention provides a kind of cell switching method and base station, is moved at a high speed in user terminal with solving the prior art
In the case of dynamic, there are user terminal switching is uncontrollable, the problem of leading to after switching low message transmission rate, poor user experience.
To solve the above-mentioned problems, the invention discloses a kind of cell switching method, applied to base station, the method packet
It includes：
Receive the first RSRP values corresponding with serving cell that user terminal UE measures and corresponding with Target cell the
Two RSRP values；
It is inserted into corresponding penalty value respectively with the 2nd RSRP values to the first RSRP values, to obtain corresponding with serving cell the
Three RSRP values and the 4th RSRP values corresponding with Target cell；
If the 3rd RSRP values meet default cell switching condition with the 4th RSRP values, UE is switched into mesh by serving cell
Mark cell.
In a preferred embodiment of the invention, the first RSRP values corresponding with serving cell that UE is measured are received,
And it before the step of corresponding with Target cell the 2nd RSRP values, further includes：
Receive multiple serving cell RSRP measured values and the multiple Target cell RSRP measured values that UE is measured；
According to multiple serving cell RSRP measured values and multiple Target cell RSRP measured values and default cell switch
Condition determines corresponding with serving cell to cut out thresholding and incision thresholding corresponding with Target cell；
By multiple serving cell RSRP measured values, multiple Target cell RSRP measured values, cut out thresholding and incision thresholding
Be sent to management equipment so that management equipment according to multiple serving cell RSRP measured values, multiple Target cell RSRP measured values,
Thresholding and incision thresholding are cut out, calculating the first penalty value corresponding with serving cell and corresponding with Target cell second are punished
Penalties；
The first penalty value and the second penalty value are obtained from management equipment end.
In a preferred embodiment of the invention, the first RSRP values corresponding with serving cell that UE is measured are received,
And it after the step of corresponding with Target cell the 2nd RSRP values, further includes：
First RSRP values and the 2nd RSRP values are sent to management equipment, to be calculated and serving cell pair by management equipment
The third penalty value and the 4th penalty value corresponding with Target cell answered；
Third penalty value and the 4th penalty value are obtained from management equipment end.
In a preferred embodiment of the invention, method further comprises：
If UE again insert by access service cell, the 5th RSRP values corresponding with serving cell measured to the UE received
Enter third penalty value；And
The 6th RSRP values corresponding with Target cell measured to the UE received are inserted into the 4th penalty value.
In a preferred embodiment of the invention, judge that the 3rd RSRP values and the 4th RSRP values are in accordance with the following methods
It is no to meet default cell switching condition, including：
Judge whether the difference between the 4th RSRP values and the 3rd RSRP values is more than predetermined threshold；
If so, the 3rd RSRP values of judgement meet default cell switching condition with the 4th RSRP values.
According to another aspect of the present invention, a kind of base station is provided, including：
First receiving module, for receive user terminal UE measurement the first RSRP values corresponding with serving cell and
The 2nd RSRP values corresponding with Target cell；
Module is inserted into, for being inserted into corresponding penalty value respectively with the 2nd RSRP values to the first RSRP values, to obtain and take
The corresponding 3rd RSRP values of cell of being engaged in and the 4th RSRP values corresponding with Target cell；
Handover module, if meeting default cell switching condition for the 3rd RSRP values and the 4th RSRP values, by UE by taking
Business cell switches to Target cell.
In a preferred embodiment of the invention, base station further comprises：
Second receiving module, for receiving multiple serving cell RSRP measured values of UE measurements and multiple Target cell RSRP
Measured value；
Determining module, for according to multiple serving cell RSRP measured values and multiple Target cell RSRP measured values, with
And default cell switching condition, it determines corresponding with serving cell to cut out thresholding and incision thresholding corresponding with Target cell；
Sending module, for by multiple serving cell RSRP measured values, multiple Target cell RSRP measured values, cut out thresholding
And incision thresholding is sent to management equipment, so that management equipment is small according to multiple serving cell RSRP measured values, multiple targets
Area's RSRP measured values cut out thresholding and incision thresholding, calculate corresponding with serving cell the first penalty value and small with target
Corresponding second penalty value in area；
Acquisition module, for obtaining the first penalty value and the second penalty value from management equipment end.
In a preferred embodiment of the invention, sending module is further used for the first RSRP values and the 2nd RSRP
Value is sent to management equipment, with by management equipment calculate corresponding with serving cell third penalty value and with Target cell pair
The 4th penalty value answered；
Correspondingly, acquisition module is further used for obtaining third penalty value and the 4th penalty value from management equipment end.
In a preferred embodiment of the invention, module is inserted into be further used for：
If UE again insert by access service cell, the 5th RSRP values corresponding with serving cell measured to the UE received
Enter third penalty value；And
The 6th RSRP values corresponding with Target cell measured to the UE received are inserted into the 4th penalty value.
In a preferred embodiment of the invention, handover module judges the 3rd RSRP values and the 4th in accordance with the following methods
Whether RSRP values meet default cell switching condition, including：
Judge whether the difference between the 4th RSRP values and the 3rd RSRP values is more than predetermined threshold；
If so, the 3rd RSRP values of judgement meet default cell switching condition with the 4th RSRP values.
Compared with prior art, by receiving corresponding with serving cell the first of user terminal UE measurements in the present invention
RSRP values and the 2nd RSRP values corresponding with Target cell；It is inserted into respectively with the 2nd RSRP values to the first RSRP values corresponding
Penalty value, to obtain the 3rd RSRP values corresponding with serving cell and the 4th RSRP values corresponding with Target cell；If third
RSRP values meet default cell switching condition with the 4th RSRP values, then UE are switched to Target cell by serving cell.So as to make
User terminal during high-speed mobile, can keep the upload and download rate of high speed, effectively between serving cell and Target cell
The probability that user terminal goes offline is reduced, and improves handover success of the user terminal between serving cell and Target cell
Rate, and then improve user experience.
Description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below by institute in the description to the embodiment of the present invention
Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the present invention
Example, for those of ordinary skill in the art, without having to pay creative labor, can also be according to these attached drawings
Obtain other attached drawings.
Fig. 1 is a kind of flow chart of cell switching method of the embodiment of the present invention；
Fig. 2 is a kind of specific steps flow chart of cell switching method of the embodiment of the present invention；
Fig. 3 is the OMC structure diagrams in the embodiment of the present invention；
Fig. 4 is the cell switch process flow chart in the embodiment of the present invention；
Fig. 5 is a kind of structure diagram of base station in the embodiment of the present invention.
Specific embodiment
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, it is below in conjunction with the accompanying drawings and specific real
Applying mode, the present invention is described in further detail.
It will be appreciated that though various information, but this may be described using term first, second, third, etc. in the application
A little information should not necessarily be limited by these terms.These terms are only used for same type of information being distinguished from each other out.For example, not departing from
In the case of the application range, the first information can also be referred to as the second information, and similarly, the second information can also be referred to as
One information.
With reference to Fig. 1, a kind of flow chart of cell switching method of the embodiment of the present invention is shown, this method is applied to base
It stands, specifically may comprise steps of：
Step 101, the first RSRP values corresponding with serving cell and and the Target cell that user terminal UE is measured are received
Corresponding 2nd RSRP values.
Specifically, in an embodiment of the present invention, after UE (user equipment, user terminal) access service cell,
Serving cell own base station sends to UE (to distinguish the base station belonging to Target cell, hereinafter referred to as serving BS) and measures request,
Wherein, it measures and configuration file needed for measurement is carried in request, so that UE carries out RSRP (Reference according to the configuration file
Signal Receiving Power, Reference Signal Received Power) value measurement.
UE measures the first RSRP values corresponding with serving cell and the 2nd RSRP values corresponding with Target cell, at this
In the embodiment of invention, Target cell is the adjacent cell of serving cell.UE is by the first RSRP values measured and the 2nd RSRP values
It is reported to serving BS.
Serving BS receives the first RSRP values and the 2nd RSRP values.
Step 102, it is inserted into corresponding penalty value respectively with the 2nd RSRP values to the first RSRP values, with acquisition and serving cell
Corresponding 3rd RSRP values and the 4th RSRP values corresponding with Target cell.
Specifically, in an embodiment of the present invention, serving BS is locally searching whether exist and serving cell and mesh
The corresponding penalty value of cell is marked, if being not present, it is determined that UE has deflected away from memory travel route, and serving BS is using in the prior art
Switching mode to UE carry out cell switching.
If there are corresponding penalty value, serving BS is inserted into corresponding punish respectively to the first RSRP values with the 2nd RSRP values
Penalties, to obtain the 3rd RSRP values corresponding with serving cell and the 4th RSRP values corresponding with Target cell.So as to raise
The corresponding original RSRP values of serving cell, and reduce the corresponding original RSRP values of Target cell.
Step 103, if the 3rd RSRP values meet default cell switching condition with the 4th RSRP values, by UE by serving cell
Switch to Target cell.
Specifically, in an embodiment of the present invention, serving BS detects whether the 3rd RSRP values meet with the 4th RSRP values
Default cell switching condition.It is if being detected as, UE is switched to Target cell by serving BS by serving cell.Specific switching side
Method will be described in detail in the following embodiments.
To sum up, the technical solution in the embodiment of the present invention, corresponding with serving cell the measured by receiving terminal UE
One RSRP values and the 2nd RSRP values corresponding with Target cell；It is inserted into respectively with the 2nd RSRP values to the first RSRP values corresponding
Penalty value, to obtain the 3rd RSRP values corresponding with serving cell and the 4th RSRP values corresponding with Target cell；If the
Three RSRP values meet default cell switching condition with the 4th RSRP values, then UE are switched to Target cell by serving cell.So as to
Make terminal between serving cell and Target cell during high-speed mobile, the upload and download rate of high speed can be kept, effectively drop
The probability of low terminal disconnection, and handover success rate of the terminal between serving cell and Target cell is improved, and then promoted
User experience.
In addition, in a preferred embodiment of the invention, receive UE is measured corresponding with serving cell first
Before the step of RSRP values and the 2nd RSRP values corresponding with Target cell, further include：
Receive multiple serving cell RSRP measured values and the multiple Target cell RSRP measured values that UE is measured；
According to multiple serving cell RSRP measured values and multiple Target cell RSRP measured values and default cell switch
Condition determines corresponding with serving cell to cut out thresholding and incision thresholding corresponding with Target cell；
By multiple serving cell RSRP measured values, multiple Target cell RSRP measured values, cut out thresholding and incision thresholding
Be sent to management equipment so that management equipment according to multiple serving cell RSRP measured values, multiple Target cell RSRP measured values,
Thresholding and incision thresholding are cut out, calculating the first penalty value corresponding with serving cell and corresponding with Target cell second are punished
Penalties；
The first penalty value and the second penalty value are obtained from management equipment end.
In a preferred embodiment of the invention, the first RSRP values corresponding with serving cell that UE is measured are received,
And it after the step of corresponding with Target cell the 2nd RSRP values, further includes：
First RSRP values and the 2nd RSRP values are sent to management equipment, to be calculated and serving cell pair by management equipment
The third penalty value and the 4th penalty value corresponding with Target cell answered；
Third penalty value and the 4th penalty value are obtained from management equipment end.
In a preferred embodiment of the invention, method further comprises：
If UE again insert by access service cell, the 5th RSRP values corresponding with serving cell measured to the UE received
Enter third penalty value；And
The 6th RSRP values corresponding with Target cell measured to the UE received are inserted into the 4th penalty value.
In a preferred embodiment of the invention, judge that the 3rd RSRP values and the 4th RSRP values are in accordance with the following methods
It is no to meet default cell switching condition, including：
Judge whether the difference between the 4th RSRP values and the 3rd RSRP values is more than predetermined threshold；
If so, the 3rd RSRP values of judgement meet default cell switching condition with the 4th RSRP values.
In order to make those skilled in the art be better understood from the present invention cell switching method, below with specific embodiment into
Row elaborates.
With reference to Fig. 2, a kind of specific steps flow chart of cell switching method of the embodiment of the present invention is shown.In fig. 2：
Step 201, the starting stage.
Specifically, in an embodiment of the present invention, the starting stage specifically includes：
Sub-step 2011 receives multiple serving cell RSRP measured values that UE is measured and is measured with multiple Target cell RSRP
Value.
Specifically, after serving BS detects UE access serving cell, asked to UE sending measurings, wherein, measure request
In carry measurement needed for configuration information, in a preferred embodiment of the invention, configuration information includes but not limited to：In advance
If interval time of measurement.
UE responds measurement request, according to configuration information, to preset the RSRP values that interval time of measurement measures serving cell
The RSRP values of (the serving cell RSRP measured values i.e. in the embodiment of the present invention) and Target cell are (i.e. in the embodiment of the present invention
Target cell RSRP measured values).
After UE is measured every time, MR (Measurement Report, measurement report) file is sent to serving BS,
Middle MR files include serving cell RSRP measured values and the Target cell RSRP measured values that this is measured.
Serving BS receives multiple MR files that UE is sent, and obtains multiple serving cell RSRP measured values and multiple mesh
Mark cell RSRP measured values.
Sub-step 2012, according to multiple serving cell RSRP measured values and multiple Target cell RSRP measured values and
Default cell switching condition determines corresponding with serving cell to cut out thresholding and incision thresholding corresponding with Target cell.
Specifically, in LTE (Long Term Evolution, long term evolution) standard, base station carries out cell switching to UE
When, it needs, according to relevant algorithm and switching condition, to make decisions relevant parameter, to realize cell switch process.Specifically
Parameter includes：
A. Reference Signal Received Power (RSRP)：I.e. for cell needed to be considered, measured on frequency band needed to be considered,
Carry the linear average of Electromagnetic Interference (RE) power contribution (as unit of W) of cell own reference signal.
B. switching lag difference (HOM)：I.e. the RSRP differences of current service cell and neighboring community, the value can be according to communications
Environment is different and sets itself, size determine handover delay length.
C. triggering duration (TTT)：It has to last for meeting a certain HOM conditions within this time just switching over and sentence
Certainly, TTT can effectively prevent the generation of " ping-pong " in switching.
Wherein, above-mentioned parameter needs to meet certain switching condition (the default switching condition i.e. in the embodiment of the present invention)
Cell switching can be carried out to UE, switching condition is：
When the following conditions are persistently satisfied in specified TTT, serving BS carries out cell switching to UE.
RSRPT ＞ RSRPS+HOM, wherein, RSRPT is Target cell RSRP measured values, and RSRPS is surveyed for serving cell RSRP
Magnitude.
Therefore, in an embodiment of the present invention, serving BS can be based on above-mentioned condition, to the multiple serving cells received
RSRP measured values make decisions with Target cell RSRP measured values, to determine whether UE can be carried out cell switching, and obtain clothes
Business cell cuts out threshold value and the incision threshold value of Target cell.
Step 2013, by multiple serving cell RSRP measured values, multiple Target cell RSRP measured values, cut out thresholding and
Incision thresholding is sent to management equipment, so that management equipment is according to multiple serving cell RSRP measured values, multiple Target cells
RSRP measured values cut out thresholding and incision thresholding, calculate the first penalty value corresponding with serving cell and and Target cell
Corresponding second penalty value.
Specifically, in an embodiment of the present invention, serving BS is got with predetermined time interval to management equipment transmission
RSRP measured values and incision thresholding and cut out thresholding so that management equipment calculated according to above-mentioned parameter it is corresponding with serving cell
The first penalty value and the second penalty value corresponding with Target cell.
In an embodiment of the present invention, OMC (Operation and Maintenance are installed in management equipment
Center manages operating platform), the structure diagram of OMC is as shown in figure 3, in figure 3：OMC includes：Adaptive operation list
Member, base station control interface, CDR (Call Detail Record, ticket) interfaces and MR interfaces.
In an embodiment of the present invention, OMC can be obtained by MR interfaces and be reported by the MR that serving BS is sent, wherein,
Include multiple serving cell RSRP measured values, the multiple Target cell RSRP measured values and corresponding of UE measurements in MR reports
Cut/cut out thresholding.
In an embodiment of the present invention, OMC can also obtain CDR business reports by CDR interfaces, wherein, CDR business reports
Record has the track of this operation of UE in announcement.It illustrates：UE is run from serving cell to Target cell, then CDR business reports
Available for describing the running orbit of UE, so as to which OMC be made to know the running orbit of UE.
Specifically, in an embodiment of the present invention, the adaptive arithmetic element in OMC can be reported according to MR and CDR industry
Business report carries out the operation of penalty value.Concrete operation method is as follows：
1) Ki is calculated, Ki is the corresponding punishment value set of serving cell.
In an embodiment of the present invention, OMC combinations MR reports and CDR business reports count UE in this operation rail
On road, i.e., from access service cell at the time of, between being switched to the Target cell moment from serving cell, multiple clothes for getting
Cell RSRP values of being engaged in and Target cell RSRP values.
Adaptive arithmetic element is according to formula Ki=| and serving cell cuts out thresholding-RSRP |, calculate the set of Ki.
2) corresponding first penalty value of serving cell is calculated.
Adaptive arithmetic element takes the intermediate value of Ki normal distributions, as the first penalty value K1 according to normal distribution formula.
3) Kj is calculated, Kj is the corresponding punishment value set of Target cell.
Adaptive unit is according to formula Kj=| Target cell incision thresholding-RSRP |, calculate the set of Kj.
4) corresponding second penalty value of Target cell is calculated.
Adaptive arithmetic element takes the intermediate value of Kj normal distributions, and negate, the as second punishment according to normal distribution formula
Value K2.Wherein, when the K2 obtained after intermediate value negates is inserted into two RSRP in the embodiment of the present invention, RSRP values can be reduced.
Step 2014, the first penalty value and the second penalty value are obtained from management equipment end.
Specifically, in an embodiment of the present invention, OMC sends the first penalty value K1 calculated and the second penalty value K2
To serving BS.
Serving BS receives K1 and K2.
In addition, in an embodiment of the present invention, to further ensure that the accuracy of penalty value, OMC can be according to above-mentioned algorithm
Multiple penalty value is calculated, and takes arithmetic mean of instantaneous value, to obtain more accurate penalty value.It illustrates：UE can continue in the fortune
3-5 times round-trip on row track, so as to which OMC be made to get multiple penalty values of serving cell, multiple penalty values are taken arithmetic to put down by OMC
Mean value, with the final penalty value of serving cell, Target cell penalty value is similar with serving cell penalty value, does not repeat herein.
With continued reference to Fig. 2, further included in Fig. 2：
Step 202, the first RSRP values corresponding with serving cell and and the Target cell that user terminal UE is measured are received
Corresponding 2nd RSRP values.
Specifically, in an embodiment of the present invention, after UE access serving cell, serving cell own base station sends to UE and surveys
Amount request, wherein, it measures and configuration file needed for measurement is carried in request, so that UE carries out RSRP values according to the configuration file
It measures, wherein, preset measuring time interval can be carried in configuration file.
UE is measured according to configuration file, the RSRP values of RSRP values and Target cell to serving cell.To make ability
Domain personnel are better understood from technical scheme of the present invention, are described in detail below with concrete numerical value.
In the present embodiment, UE is after access service cell, according to the requirement of configuration file, with preset measuring time interval
The RSRP values of serving cell and Target cell are measured, get the RSRP values of multipair serving cell and Target cell：
RSRPS1 (serving cell RSRP values), RSRPT1 (Target cell RSRP values)；RSRPS2、RSRPT2；RSRPS3、RSRPT3.And
And UE often measures a pair of of RSRP values, then generates corresponding MR reports, and be sent to serving BS.
Serving BS often receives a MR report, then extracts RSRP values therein.
Step 203, it is inserted into corresponding penalty value respectively with the 2nd RSRP values to the first RSRP values, with acquisition and serving cell
Corresponding 3rd RSRP values and the 4th RSRP values corresponding with Target cell.
Specifically, in the present embodiment, serving BS often obtains a MR report, then locally searching whether exist first
Penalty value corresponding with serving cell and Target cell, if being not present, it is determined that UE has deflected away from memory travel route, services base
It stands and cell switching is carried out to UE using switching mode of the prior art.
If there are corresponding penalty value, serving BS is inserted into corresponding punish respectively to the first RSRP values with the 2nd RSRP values
Penalties, to obtain the 3rd RSRP values corresponding with serving cell and the 4th RSRP values corresponding with Target cell.With this implementation
For concrete numerical value in example：
After serving BS gets RSRPS1, RSRPT1, determine that UE is still travelled in memory travel route.
Serving BS is locally finding out the corresponding penalty value K1 of the serving cell and corresponding penalty value K2 of Target cell.
Then, serving BS is inserted into K1 into RSRPS1, and K2 is inserted into RSRPT1, respectively obtains：RSRPS1’、RSRPT1’.
Step 204, if the 3rd RSRP values meet default cell switching condition with the 4th RSRP values, by UE by serving cell
Switch to Target cell.
Specifically, in an embodiment of the present invention, serving BS judges the 3rd RSRP values and the 4th in accordance with the following methods
Whether RSRP values meet default cell switching condition, including：
Sub-step 2041, judges whether the difference between the 4th RSRP values and the 3rd RSRP values is more than predetermined threshold；
Sub-step 2042, if so, the 3rd RSRP values of judgement meet default cell switching condition with the 4th RSRP values.
Still illustrated by taking the parameter in the present embodiment as an example：
Serving BS judges RSRPT1 '-RSRPS1 '>Whether HOM is true.
In the present embodiment, it is clear that above-mentioned condition is invalid.
Then serving BS receives RSRPS2, RSRPT2 that UE is sent next time, and calculates RSRPS2 ', RSRPT2 '.
In the present embodiment, RSRPS2 ', RSRPT2 ' do not meet switching condition still.
RSRPS3, RSRPT3 are received in serving BS, and after calculating RSRPS3 ', RSRPT3 ', serving BS judgement
RSRPT3’-RSRPS3’>HOM.In a preferred embodiment of the invention, serving BS can judge according to default TTT values
Whether above-mentioned condition is persistently satisfied within the TTT times.
Then, serving BS starts cell switching flow, and UE is switched to Target cell by serving cell.
In addition, in one embodiment of the invention, after step 202, method can also include：
1) the first RSRP values and the 2nd RSRP values are sent to management equipment by serving BS, with by management equipment calculate with
The corresponding third penalty value of serving cell and the 4th penalty value corresponding with Target cell；
2) serving BS obtains third penalty value and the 4th penalty value from management equipment end.
If 3) UE access service cells again, the 5th RSRP values corresponding with serving cell that are measured to the UE received
It is inserted into third penalty value；And
4) it is inserted into the 4th penalty value to the 6th RSRP values corresponding with Target cell that the UE received is measured.
Specifically, the RSRP values received are still sent to OMC by serving BS with predetermined time interval with MR report forms,
OMC can calculate serving cell penalty value Km and Target cell Kn in this UE driving process, computational methods and above-mentioned reality
It applies identical in example, does not repeat herein.
Then, the penalty value K1 calculated before and Km can be taken arithmetic average, the penalty value of Target cell and service by OMC
The penalty value of cell is identical, does not repeat herein.Therefore, OMC can get the penalty value based on this driving process, and be sent to
Serving BS so as to realize the dynamic adjustment to penalty value, makes penalty value more accurate.
It, can be to if detecting UE access service cells again after serving BS gets the penalty value after dynamic adjusts
The RSRP values corresponding with serving cell and RSRP values corresponding with Target cell that the UE received is measured are inserted into corresponding dynamic
Penalty value after state adjustment, so as to further improve the accuracy of handoff threshold and user experience.
In an embodiment of the present invention, it is illustrated in figure 4 serving BS and UE is switched into Target cell by serving cell
Handoff procedure flow chart, specifically includes：
Step 1：To target eNode B, (i.e. the present invention is implemented source eNode B (serving BS i.e. in the embodiment of the present invention)
Target BS in example belonging to Target cell) handover request message is sent, which includes the relevant information that switching prepares, including
But it is not limited to：X2 and S1 signaling context references, Target Cell Identifier, key KeyNode B*, the RRC (Radio of UE
Resource Control, wireless heterogeneous networks) context, AS (Access Stratum) configuration, E-UTRAN (Evolved
UMTS Radio Access Network, enhanced UMTS wireless access networks) radio access bearer (E-UTRAN Radio
Access Bearer, E-RAB) context etc..It is also used for simultaneously comprising cell-of-origin physical layer identifications and message authentication identifying code
Recovery process after possible handover failure.X2 the and S1 signaling context references of UE can be used for target eNode B and find source
The position of eNode B.E-RAB contexts include necessary wireless network layer (Radio Network Layer, RLN) and transmission
Service quality (the Quality of of layer (Transport Network Layer, TNL) addressing information and E-RAB
Service, QoS) information etc..Handover preparation information some be contained within (such as the Target cell mark of interface message in itself
Know), another part is present in the RRC containers (RRC container) of interface message (such as RRC contexts).
Step 2：Target eNode B carry out admission control according to the E-RAB QoS informations received, to improve the success of switching
Rate.AS configurations used in Target cell may be completely independent of the complete configuration of cell-of-origin or on cell-of-origin basis
On increment configuration (increment configuration refers to identical part without configuration, only different parts, UE are re-matched by signaling
For the configuration not received, first wife will be continuing with and put).
Step 3：The switching that target eNode B carry out L1/L2 prepares, while sends handover request ACK to source eNode B and disappear
Breath.Comprising a RRC container (radio resource controller) in the message, particular content is cutting of triggering that UE switches over
Change order.
Step 4：Source eNode B switching commands transmit the message to UE by the way of transparent transmission.Comprising new in switching command
C-RNTI, target eNode B security algorithm identification, can also carry the special Preamble codes of random access, access ginseng
Number, system information etc..In one embodiment, RNL/TNL information can also be carried in handover request ACK message, for
Data forwarding.After when source, eNode B receive handover request ACK message or forwarded switching command to UE, you can carry out
Data forwarding flow.
After UE receives the message, handoff procedure will be initiated using the relevant parameter in the message.
Step 5：Source eNode B transmit Sequence Number (Sequence Number, SN) state transfer message to target eNode
B, uplink PDCP (Packet Data Convergence Protocol, the packet data convergence protocol) SN for transmitting E-RAB connect
Receipts state and downlink PDCP SN send state.Uplink PDCP SN reception states included at least received in-order the last one on
The PDCP SN of row SDU (Service Data Unit, service data unit), it is also possible to comprising being represented in the form of bit map
Cause receive the SN of the uplink SDU of out of order loss.Downlink PDCP SN transmissions state is used to indicate target eNode B should
Next SDU serial numbers of distribution.If no E-RAB needs to transmit the state report of PDCP, source eNode B can be omitted this
Message.
Step 6：After UE receives switching command, execution is synchronous with Target cell, if be configured in switching command
The special Preamble codes of random access then access Target cell, if be not configured special using non-competing random access procedure
Preamble codes, then using competition random access procedure access Target cell.UE calculate used needed for target eNode B it is close
Key and allocating security algorithm, for communicating after handover success with target eNode B.
Step 7：Network replies ascending resource distribution instruction and timing advance.
Step 8：After UE is successfully accessed Target cell, UE transmissions RRC connection reconfigurations, which are put, completes message, to target eNode
B confirms that handoff procedure is completed.If resource allows, which can carry uplink buffer status report (Buffer Status
Report, BSR) improvement.Target eNode B are put by receiving RRC connection reconfigurations and complete message, are confirmed and are switched successfully.So far,
Target eNode B can start to UE transmission datas.
Step 9：Target eNode B are sent to MME (Mobility Management Entity, mobility management entity)
Path switching request information, to inform that UE serving cells have switched.
Step 10：MME sends user plane update request message to S-GW (Serving Gateway, gateway).
Step 11：Downstream data paths are switched to target eNode B sides by S-GW.S-GW sent on old path one or
More than one " end marker " data packet is to source eNode B, you can the user plane resource of source of release eNode B.
Step 12：S-GW sends user plane update response message to MME.
Step 13：MME is to target eNode B transmitting path convert requests ACK messages.The purpose of the process is by user plane
Data path go to target eNode B from source eNode B.After S-GW converted downlink path, forwarded leg and Xin Lu
The downstream packets of diameter may be reached alternately in target eNode B.Target eNode B should transmit all forwarding data packets first
To UE, the packet received from new route is then transmitted again.Mandatory it can be ensured correctly using this method in target eNode B
Transmission sequence.In order to assist the rearrangement function in target eNode B, S-GW is after E-RAB transduction pathway, immediately in old path
Send one or more than one " end marker " data packet.Without user data in " end marker " data packet, by GTP
Head instruction.After completing to send the packet containing identifier, S-GW should not send any data packet in old path.It is receiving
After " end marker " data packet, if forward is activation to this carrying, this packet should be sent to target by source eNode B
eNode B.After " end marker " data packet is found, target eNode B abandon " end marker " data packet, and initiate to appoint
What necessary flow maintains sequentially submitting for user.
Step 14：Target eNode B send UE context release messages to source eNode B, notice source eNode B switchings
The release of the resource of success and trigger source eNode B.Target eNode B are after the path integration ACK message beamed back from MME is received
Send this message.
Step 15：After receiving UE context release messages, source eNode B can releasing wireless loading and with UE contexts
Relevant control plane resource, wherein, ongoing data forwarding will continue.
In conclusion the technical solution in the embodiment of the present invention, by receiving the corresponding with serving cell of terminal UE measurement
The first RSRP values and the 2nd RSRP values corresponding with Target cell；It is inserted into respectively with the 2nd RSRP values to the first RSRP values
Corresponding penalty value, to obtain the 3rd RSRP values corresponding with serving cell and the 4th RSRP values corresponding with Target cell；
If the 3rd RSRP values meet default cell switching condition with the 4th RSRP values, UE is switched into Target cell by serving cell.
So as to make terminal between serving cell and Target cell during high-speed mobile, the upload and download rate of high speed can be kept, is had
Effect reduces the probability of terminal disconnection, and improves handover success rate of the terminal between serving cell and Target cell, and then
Improve user experience.
With reference to Fig. 5, a kind of structure diagram of base station of the embodiment of the present invention is shown, which can specifically include following
Module：
First receiving module 501, for receiving the first RSRP values corresponding with serving cell of user terminal UE measurements, with
And the 2nd RSRP values corresponding with Target cell.
Be inserted into module 502, for being inserted into corresponding penalty value respectively with the 2nd RSRP values to the first RSRP values, with obtain and
The corresponding 3rd RSRP values of serving cell and the 4th RSRP values corresponding with Target cell.
Handover module 503, if meeting default cell switching condition for the 3rd RSRP values and the 4th RSRP values, by UE by
Serving cell switches to Target cell.
In a preferred embodiment of the invention, base station further comprises：
Second receiving module (not shown), for receive UE measurement multiple serving cell RSRP measured values with it is multiple
Target cell RSRP measured values.
Determining module (not shown), for according to multiple serving cell RSRP measured values and multiple Target cells
RSRP measured values and default cell switching condition, determine it is corresponding with serving cell cut out thresholding and with Target cell pair
The incision thresholding answered.
Sending module (not shown), for multiple serving cell RSRP measured values, multiple Target cell RSRP to be surveyed
Magnitude, cut out thresholding and incision thresholding be sent to management equipment so that management equipment is measured according to multiple serving cell RSRP
Value, multiple Target cell RSRP measured values cut out thresholding and incision thresholding, calculate the first penalty value corresponding with serving cell
And the second penalty value corresponding with Target cell.
Acquisition module (not shown), for obtaining the first penalty value and the second penalty value from management equipment end.
In a preferred embodiment of the invention, sending module is further used for the first RSRP values and the 2nd RSRP
Value is sent to management equipment, with by management equipment calculate corresponding with serving cell third penalty value and with Target cell pair
The 4th penalty value answered；
Correspondingly, acquisition module is further used for obtaining third penalty value and the 4th penalty value from management equipment end.
In a preferred embodiment of the invention, module 502 is inserted into be further used for：
If UE again insert by access service cell, the 5th RSRP values corresponding with serving cell measured to the UE received
Enter third penalty value；And
The 6th RSRP values corresponding with Target cell measured to the UE received are inserted into the 4th penalty value.
In a preferred embodiment of the invention, handover module 503 judge in accordance with the following methods the 3rd RSRP values with
Whether the 4th RSRP values meet default cell switching condition, including：
Judge whether the difference between the 4th RSRP values and the 3rd RSRP values is more than predetermined threshold；
If so, the 3rd RSRP values of judgement meet default cell switching condition with the 4th RSRP values.
In conclusion the base station in the embodiment of the present invention, by receive that terminal UE measures corresponding with serving cell the
One RSRP values and the 2nd RSRP values corresponding with Target cell；It is inserted into respectively with the 2nd RSRP values to the first RSRP values corresponding
Penalty value, to obtain the 3rd RSRP values corresponding with serving cell and the 4th RSRP values corresponding with Target cell；If the
Three RSRP values meet default cell switching condition with the 4th RSRP values, then UE are switched to Target cell by serving cell.So as to
Make terminal between serving cell and Target cell during high-speed mobile, the upload and download rate of high speed can be kept, effectively drop
The probability of low terminal disconnection, and handover success rate of the terminal between serving cell and Target cell is improved, and then promoted
User experience.
For apparatus embodiments, since it is basicly similar to embodiment of the method, so description is fairly simple, it is related
Part illustrates referring to the part of embodiment of the method.
Each embodiment in this specification is described by the way of progressive, the highlights of each of the examples are with
The difference of other embodiment, just to refer each other for identical similar part between each embodiment.
The embodiment of the present invention can be described in the general context of computer executable instructions, example
Such as program module.Usually, program module include routines performing specific tasks or implementing specific abstract data types, program,
Object, component, data structure etc..The present invention can also be put into practice in a distributed computing environment, in these Distributed Calculation rings
In border, by performing task by communication network and connected remote processing devices.In a distributed computing environment, program mould
Block can be located in the local and remote computer storage media including storage device.
Finally, it is to be noted that, herein, relational terms such as first and second and the like be used merely to by
One entity or operation are distinguished with another entity or operation, without necessarily requiring or implying these entities or operation
Between there are any actual relationship or orders.Moreover, term " comprising ", "comprising" or its any other variant meaning
Covering non-exclusive inclusion, so that process, method, commodity or equipment including a series of elements not only include that
A little elements, but also including other elements that are not explicitly listed or further include for this process, method, commodity or
The intrinsic element of equipment.In the absence of more restrictions, the element limited by sentence "including a ...", is not arranged
Except also there are other identical elements in the process including the element, method, commodity or equipment.
A kind of cell switching method provided by the present invention and base station are described in detail above, it is used herein
Specific case is expounded the principle of the present invention and embodiment, and the explanation of above example is only intended to help to understand this
The method and its core concept of invention；Meanwhile for those of ordinary skill in the art, thought according to the present invention, specific
There will be changes in embodiment and application range, in conclusion the content of the present specification should not be construed as to the present invention's
Limitation.
Claims (10)
1. a kind of cell switching method, the method is applied to base station, which is characterized in that the method includes：
Receive the first RSRP values corresponding with serving cell and corresponding with Target cell second that user terminal UE is measured
RSRP values；
It is inserted into corresponding penalty value respectively with the 2nd RSRP values to the first RSRP values, to obtain and the serving cell
Corresponding 3rd RSRP values and the 4th RSRP values corresponding with the Target cell；
If the 3rd RSRP values meet default cell switching condition with the 4th RSRP values, by the UE by the service
Cell switches to the Target cell.
2. according to the method described in claim 1, it is characterized in that, described receive corresponding with serving cell the first of UE measurements
Before the step of RSRP values and the 2nd RSRP values corresponding with Target cell, further include：
Receive multiple serving cell RSRP measured values and the multiple Target cell RSRP measured values that the UE is measured；
According to the multiple serving cell RSRP measured values and multiple Target cell RSRP measured values and described default
Cell switching condition determines corresponding with the serving cell to cut out thresholding and incision door corresponding with the Target cell
Limit；
By the multiple serving cell RSRP measured values, the multiple Target cell RSRP measured values, it is described cut out thresholding and
The incision thresholding is sent to management equipment, so that the management equipment is according to the multiple serving cell RSRP measured values, institute
State multiple Target cell RSRP measured values, it is described cut out thresholding and the incision thresholding, calculate corresponding with the serving cell
The first penalty value and the second penalty value corresponding with the Target cell；
First penalty value and second penalty value are obtained from the management equipment end.
It is 3. according to the method described in claim 2, it is characterized in that, described receiving that user terminal UE measures with serving cell pair
After the step of the first RSRP values answered and the 2nd RSRP values corresponding with Target cell, further include：
The first RSRP values and the 2nd RSRP values are sent to the management equipment, to be calculated by the management equipment
Third penalty value corresponding with the serving cell and the 4th penalty value corresponding with the Target cell；
The third penalty value and the 4th penalty value are obtained from the management equipment end.
4. according to the method described in claim 3, it is characterized in that, the method further includes：
If the UE accesses the serving cell again, measured to the UE received corresponding with the serving cell
5th RSRP values are inserted into the third penalty value；And
The 6th RSRP values corresponding with the Target cell measured to the UE received are inserted into the 4th penalty value.
5. according to the method described in claim 1, it is characterized in that, judge in accordance with the following methods the 3rd RSRP values with it is described
Whether the 4th RSRP values meet the default cell switching condition, including：
Judge whether the difference between the 4th RSRP values and the 3rd RSRP values is more than predetermined threshold；
If so, judgement the 3rd RSRP values meet the default cell switching condition with the 4th RSRP values.
6. a kind of base station, which is characterized in that including：
First receiving module, for receiving the first RSRP values corresponding with serving cell and and mesh of user terminal UE measurements
Mark the corresponding 2nd RSRP values of cell；
Module is inserted into, for being inserted into corresponding penalty value respectively with the 2nd RSRP values to the first RSRP values, to obtain
The 3rd RSRP values corresponding with the serving cell and the 4th RSRP values corresponding with the Target cell；
Handover module, if meeting default cell switching condition for the 3rd RSRP values and the 4th RSRP values, by institute
It states UE and the Target cell is switched to by the serving cell.
7. base station according to claim 6, which is characterized in that the base station further comprises：
Second receiving module, for receiving multiple serving cell RSRP measured values and the multiple Target cell RSRP that the UE is measured
Measured value；
Determining module, for being measured according to the multiple serving cell RSRP measured values and multiple Target cell RSRP
Value and the default cell switching condition determine the thresholding and small with the target of cutting out corresponding with the serving cell
The corresponding incision thresholding in area；
Sending module, for by the multiple serving cell RSRP measured values, the multiple Target cell RSRP measured values, described
It cuts out thresholding and the incision thresholding is sent to management equipment, so that the management equipment is according to the multiple serving cell
RSRP measured values, the multiple Target cell RSRP measured values, it is described cut out thresholding and the incision thresholding, calculate with it is described
Corresponding first penalty value of serving cell and the second penalty value corresponding with the Target cell；
Acquisition module, for obtaining first penalty value and second penalty value from the management equipment end.
8. base station according to claim 7, which is characterized in that the sending module is further used for the first RSRP
Value is sent to the management equipment with the 2nd RSRP values, corresponding with the serving cell to be calculated by the management equipment
Third penalty value and the 4th penalty value corresponding with the Target cell；
Correspondingly, the acquisition module is further used for obtaining the third penalty value and the described 4th from the management equipment end
Penalty value.
9. base station according to claim 8, which is characterized in that the insertion module is further used for：
If the UE accesses the serving cell again, measured to the UE received corresponding with the serving cell
5th RSRP values are inserted into the third penalty value；And
The 6th RSRP values corresponding with the Target cell measured to the UE received are inserted into the 4th penalty value.
10. base station according to claim 6, which is characterized in that the handover module judges described in accordance with the following methods
Whether three RSRP values meet the default cell switching condition with the 4th RSRP values, including：
Judge whether the difference between the 4th RSRP values and the 3rd RSRP values is more than predetermined threshold；
If so, judgement the 3rd RSRP values meet the default cell switching condition with the 4th RSRP values.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611220472.3A CN108243470B (en) | 2016-12-26 | 2016-12-26 | Cell switching method and base station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611220472.3A CN108243470B (en) | 2016-12-26 | 2016-12-26 | Cell switching method and base station |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108243470A true CN108243470A (en) | 2018-07-03 |
| CN108243470B CN108243470B (en) | 2020-11-03 |
Family
ID=62702182
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611220472.3A Active CN108243470B (en) | 2016-12-26 | 2016-12-26 | Cell switching method and base station |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108243470B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112203334A (en) * | 2020-11-06 | 2021-01-08 | 中国联合网络通信集团有限公司 | Cell switching method and device |
| WO2021237611A1 (en) * | 2020-05-28 | 2021-12-02 | Qualcomm Incorporated | Modifying a synchronization signal block (ssb) measurement for a measurement report to induce an ssb handover |
| TWI816343B (en) * | 2022-03-30 | 2023-09-21 | 新加坡商鴻運科股份有限公司 | Method for providing better connecting signals, electronic device and computer readable storage medium |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102202350A (en) * | 2011-05-24 | 2011-09-28 | 北京邮电大学 | Optimization method for load balancing actively initiated by light load cell |
| CN102325353A (en) * | 2011-07-15 | 2012-01-18 | 大唐移动通信设备有限公司 | Method, equipment and system for selecting target cell during handover |
| CN102572928A (en) * | 2010-12-24 | 2012-07-11 | 华为技术有限公司 | Method and system for adjusting parameters and method for reporting measurement results, as well as equipment |
| CN102984767A (en) * | 2011-09-02 | 2013-03-20 | 普天信息技术研究院有限公司 | Adjustment method for almost blank subframe (ABS) pattern in heterogeneous network |
| CN103945467A (en) * | 2014-04-21 | 2014-07-23 | 大唐移动通信设备有限公司 | Cell switching method and system, base station and terminal |
| US20150146545A1 (en) * | 2012-11-02 | 2015-05-28 | Intel Corporation | Handling signal quality measurements in a wireless communication network |
-
2016
- 2016-12-26 CN CN201611220472.3A patent/CN108243470B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102572928A (en) * | 2010-12-24 | 2012-07-11 | 华为技术有限公司 | Method and system for adjusting parameters and method for reporting measurement results, as well as equipment |
| CN102202350A (en) * | 2011-05-24 | 2011-09-28 | 北京邮电大学 | Optimization method for load balancing actively initiated by light load cell |
| CN102325353A (en) * | 2011-07-15 | 2012-01-18 | 大唐移动通信设备有限公司 | Method, equipment and system for selecting target cell during handover |
| CN102984767A (en) * | 2011-09-02 | 2013-03-20 | 普天信息技术研究院有限公司 | Adjustment method for almost blank subframe (ABS) pattern in heterogeneous network |
| US20150146545A1 (en) * | 2012-11-02 | 2015-05-28 | Intel Corporation | Handling signal quality measurements in a wireless communication network |
| CN103945467A (en) * | 2014-04-21 | 2014-07-23 | 大唐移动通信设备有限公司 | Cell switching method and system, base station and terminal |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021237611A1 (en) * | 2020-05-28 | 2021-12-02 | Qualcomm Incorporated | Modifying a synchronization signal block (ssb) measurement for a measurement report to induce an ssb handover |
| CN112203334A (en) * | 2020-11-06 | 2021-01-08 | 中国联合网络通信集团有限公司 | Cell switching method and device |
| TWI816343B (en) * | 2022-03-30 | 2023-09-21 | 新加坡商鴻運科股份有限公司 | Method for providing better connecting signals, electronic device and computer readable storage medium |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108243470B (en) | 2020-11-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11558801B2 (en) | Handover management based on speeds of wireless communication devices | |
| EP3656153B1 (en) | Wireless communication system and method for handling wireless communication enhancing handover | |
| Lauridsen et al. | From LTE to 5G for connected mobility | |
| EP3737159B1 (en) | Method and device for preserving mobility information in terminal state transition and effectively re-accessing in heterogeneous cell network in mobile communication system | |
| US9596629B2 (en) | Systems and methods for transparent point-to-point handovers of a mobile relay | |
| CN104902529B (en) | A kind of method for switching network, device and base station | |
| EP0932999B1 (en) | Device and method in a cellular mobile telephone system | |
| EP2360967A1 (en) | A method for communicating in a wireless communication network | |
| EP2337400A1 (en) | Handover procedure in a coordinated multipoint (CoMP) transmission network | |
| CN106792556A (en) | Serving cell switching handling method under a kind of track traffic scene | |
| Cho et al. | LTE-R handover point control scheme for high-speed railways | |
| CN105230092B (en) | The method of base station, network controller and forward direction switching | |
| RU2018108590A (en) | SYSTEM AND METHOD FOR RE-USING WIRELESS COMMUNICATION RESOURCES IN NEIGHBORING COMMUNICATION NETWORKS | |
| CN110753377B (en) | Cell switching method based on position, terminal and base station | |
| US20220191961A1 (en) | System and method for performing and reporting measurements in wireless communication networks | |
| CN113597784A (en) | Method for switching network equipment, terminal equipment and network equipment | |
| CN104994551A (en) | Configuration switching method of LTE (Long Term Evolution) system under high-speed mobile context | |
| CN108243470A (en) | A kind of cell switching method and base station | |
| EP2385725A1 (en) | Method of performing a handover procedure in a wireless telecommunication network | |
| CN106792557B (en) | Data scheduling method in LTE (Long term evolution) rail transit scene | |
| CN105188097B (en) | Method of handover and base station under a kind of scene based on high ferro | |
| EP3254509B1 (en) | Calculating timing offset in wireless communications | |
| CN101401467A (en) | Communication area detection system, method thereof, and base station and mobile device used for the same | |
| EP2615857A1 (en) | Method for determining a future location of a mobile electronic device | |
| EP4021090A1 (en) | Communication method and related device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |