CN109151920A - The sending method of synchronization signal and base station - Google Patents
The sending method of synchronization signal and base station Download PDFInfo
- Publication number
- CN109151920A CN109151920A CN201710456148.XA CN201710456148A CN109151920A CN 109151920 A CN109151920 A CN 109151920A CN 201710456148 A CN201710456148 A CN 201710456148A CN 109151920 A CN109151920 A CN 109151920A
- Authority
- CN
- China
- Prior art keywords
- rru
- base station
- downlink
- delay compensation
- time delay
- 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
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/14—Reselecting a network or an air interface
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W56/00—Synchronisation arrangements
- H04W56/004—Synchronisation arrangements compensating for timing error of reception due to propagation delay
- H04W56/0045—Synchronisation arrangements compensating for timing error of reception due to propagation delay compensating for timing error by altering transmission time
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/08—Access point devices
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The present invention provides sending method and the base station of a kind of synchronization signal, the sending method includes: that base station obtains downlink synchronous signal, base station is after preconfigured delay compensation, the downlink synchronous signal is sent to terminal device, so that the terminal device detects the downlink synchronous signal in search window.Pass through the active arrangement delay compensation on the base station of adjacent cell, so that the base station is when sending downlink synchronous signal to terminal, the distance between terminal and the base station are compensated by delay compensation, under conditions of not changing hardware, elimination the distance between adjacent cell base station and main plot base station is poor, avoids the problem that terminal device can't detect the synchronization signal of adjacent cell base station transmission.
Description
Technical field
The present embodiments relate to the sending methods and base station of the communication technology more particularly to a kind of synchronization signal.
Background technique
In long term evolution (Long Term Evolution, LTE) system, in order to support terminal, i.e. user equipment
The mobile management of (User Equipment, UE), ensures the continuity of terminal traffic, the UE being in motion process can not stop
Search adjacent cell in ground obtains the quality of reception that is synchronous and estimating the cell signal, to decide whether to switch over or cell weight
Choosing.So detection search adjacent cell downlink synchronous signal is the prerequisite of subsequent adjacent cell measurement movement from the point of view of UE switching flow
Condition is broadly divided into primary synchronization signal detection and secondary synchronization signal detection.Complete uplink synchronisation, terminal transmission timing is adjusted
Later, start wireless heterogeneous networks (Radio Resource Control, RRC) signaling process and complete cell switching.
Fig. 1 is handoff scenario schematic diagram of the UE between main plot and adjacent cell.As shown in Figure 1, in switching band, when out
(such as Fig. 1, adjacent cell is away from terminal with respect to mistake for the case where existing adjacent cell has big difference to terminal distance with service area to terminal distance
Closely), it may appear that when adjacent cell downlink synchronous signal incoming terminal, terminal is just being sent in the sub-frame of uplink in primary area, terminal at this time
Can not solution be transferred to adjacent cell arrival downlink synchronous signal, it is even more impossible to adjacent cell initiate measure, be easy to cause handover failure, industry
Business is interrupted.
Summary of the invention
A kind of sending method of synchronization signal provided in an embodiment of the present invention and base station, for solving in above scheme, eventually
End can not area's solution be transferred to adjacent cell arrival downlink synchronous signal, it is even more impossible to adjacent cell initiate measure, be easy to cause switching lose
Lose, service disconnection the problem of.
First aspect of the embodiment of the present invention provides a kind of sending method of synchronization signal, comprising:
Base station obtains downlink synchronous signal；
The base station is sent to terminal device after preconfigured delay compensation, by the downlink synchronous signal, with
The terminal device is set to detect the downlink synchronous signal in search window.
Optionally, the base station includes baseband processing unit BBU and radio frequency remote unit RRU, then the base station is preparatory
After the delay compensation of configuration, before the downlink synchronous signal is sent to terminal device, the method also includes:
The preconfigured delay compensation is sent to the RRU by the BBU.
Optionally, the method also includes:
The RRU judge the delay compensation whether be more than the RRU caching capabilities；
If it is not, then the RRU caches the delay compensation.
Optionally, the downlink synchronous signal is sent to terminal after preconfigured delay compensation by the base station
Equipment:
The RRU adjusts downlink time delay according to the delay compensation；
The RRU is sent to the terminal device according to the downlink time delay adjusted, by the downlink synchronous signal.
Optionally, the RRU includes: according to delay compensation adjustment downlink time delay
The RRU judges whether to have had built up carrier wave；
If having built up carrier wave on the RRU, according to the delay compensation flush logic time delay register value and up and down
Row time slot switching point register value completes the adjustment of downlink time delay.
Optionally, the method also includes:
If not setting up carrier wave also on the RRU, during waiting the period time delay of the BBU to configure message according to
The delay compensation refreshes the logic time delay register value；
It is established in the carrier wave sent according to the BBU and institute is refreshed according to the delay compensation during carrier wave is established in order
Uplink and downlink timeslot switching point register value is stated, the adjustment of downlink time delay is completed.
Second aspect of the present invention provides a kind of base station, comprising:
Processing module, for obtaining downlink synchronous signal；
Transmission module, for the downlink synchronous signal being sent to terminal and is set after preconfigured delay compensation
It is standby, so that the terminal device detects the downlink synchronous signal in search window.
Optionally, the processing module includes baseband processing unit BBU；The transmission module includes Remote Radio Unit
RRU, then the transmission module after preconfigured delay compensation, by the downlink synchronous signal be sent to terminal device it
Before, the preconfigured delay compensation is sent to the RRU by the BBU.
Optionally, the RRU judge the delay compensation whether be more than the RRU caching capabilities；
If it is not, then the RRU is also used to cache the delay compensation.
Optionally, the RRU adjusts downlink time delay according to the delay compensation；
The RRU is sent to the terminal device according to the downlink time delay adjusted, by the downlink synchronous signal.
Optionally, the RRU is specifically used for:
Judge whether to have had built up carrier wave；
If having built up carrier wave on the RRU, according to the delay compensation flush logic time delay register value and up and down
Row time slot switching point register value completes the adjustment of downlink time delay.
Optionally, the RRU is also used to:
If not setting up carrier wave also on the RRU, during waiting the period time delay of the BBU to configure message according to
The delay compensation refreshes the logic time delay register value；
It is established in the carrier wave sent according to the BBU and institute is refreshed according to the delay compensation during carrier wave is established in order
Uplink and downlink timeslot switching point register value is stated, the adjustment of downlink time delay is completed.
Third aspect present invention provides also a kind of base station, comprising: is stored with the memory of program instruction, for controlling program
Processor, the transceiver of instruction execution.Processor control is believed with any the synchronous of implementation offer of aforementioned first aspect is executed
Number sending method.
The sending method of synchronization signal provided in an embodiment of the present invention and base station, by actively matching on the base station of adjacent cell
Set delay compensation so that the base station is when sending downlink synchronous signal to terminal, by delay compensation to terminal and the base station it
Between distance compensate, under conditions of not changing hardware, eliminate the distance between adjacent cell base station and main plot base station it is poor,
It avoids the problem that terminal device can't detect the synchronization signal of adjacent cell base station transmission, enables the terminal to solution and be transferred to adjacent cell to arrive
The downlink synchronous signal reached initiates to measure to adjacent cell, completes cell switching.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is this hair
Bright some embodiments for those of ordinary skill in the art without any creative labor, can be with
It obtains other drawings based on these drawings.
Fig. 1 is handoff scenario schematic diagram of the UE between main plot and adjacent cell；
Fig. 2 is the flow chart of the sending method embodiment one of synchronization signal provided by the invention；
Fig. 3 is the BBU/RRU latency measurement topological structure schematic diagram of base station provided by the invention；
Fig. 4 is the adjustable integral point schematic diagram of downlink time delay of base station provided by the invention；
Fig. 5 is the flow chart of one example of sending method of synchronization signal provided by the invention；
Fig. 6 a is downlink signal time delay effect schematic diagram in the prior art；
Fig. 6 b is the downlink signal time delay effect schematic diagram of base station provided by the invention；
Fig. 7 is the structural schematic diagram of base station embodiment one provided by the invention；
Fig. 8 is the structural schematic diagram of base station embodiment two provided by the invention.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art
Every other embodiment obtained without creative efforts, shall fall within the protection scope of the present invention.
Fig. 1 is handoff scenario schematic diagram of the UE between main plot and adjacent cell.As shown in Figure 1, terminal device (or
It is terminal, UE etc.) in switching band, when there is the case where adjacent cell has big difference to terminal distance with service area to terminal distance
(adjacent cell is relatively excessively close away from terminal), it may appear that when adjacent cell downlink synchronous signal incoming terminal, terminal is just in the uplink in primary area
Subframe is sent, terminal at this time can not area's solution be transferred to the downlink synchronous signal of adjacent cell arrival, it is even more impossible to initiate to survey to adjacent cell
Amount, be easy to cause handover failure, service disconnection.The reason of causing problem above to occur is because terminal is doing adjacent cell downlink
It when synchronization signal is searched for, is scanned on the basis of the Timing Advance of current service cell (main plot).When adjacent small
When area and relatively excessively close terminal distance, it just will appear the case where wireless frame head of adjacent cell is prior to current service area incoming terminal, when
Adjacent cell frame head synchronization signal exceeds forward too much, and the search window range beyond terminal current base, terminal can directly abandon this
Frame causes that down-going synchronous can not be obtained with adjacent cell, finally terminal off-grid, handover failure in moving process.
For such situation, common mode is by improvement terminal hardware, increases search window range, and is increased adjacent small
The network optimization means of area's covering radius solve the problems, such as.However, the ability of the terminal chip of different vendor is different, for base station
For the side (evolved Node B, eNB), can not force all terminals is allowed to accomplish search window it is sufficiently large, to meet some stations
The extreme requirement of point addressing；Meanwhile the website for having built up, it will usually there is the limitation in some constructions to cause increase adjacent small
The scheme of area's radius is difficult to implement, and even if can increase adjacent cell radius, it is also difficult to guarantee the increased radius foot of adjacent cell
With the range difference of two cells of compensation to terminal.Therefore, the present invention provides a kind of sending method of the synchronization signal of base station side, with
Overcome the problems, such as this.
Fig. 2 is the flow chart of the sending method embodiment one of synchronization signal provided by the invention, as shown in Fig. 2, this implementation
The sending method for the synchronization signal that example provides applies the adjacent cell base station side particularly applied in base station side in terminal, so as to
When terminal is in switching band, the downlink synchronous signal of adjacent cell base station, the hair of the synchronization signal can be detected in search window
The specific implementation step of delivery method is；
S101: base station obtains downlink synchronous signal.
S102: base station is sent to terminal device after preconfigured delay compensation, by downlink synchronous signal, so that eventually
End equipment detects downlink synchronous signal in search window.
In this step, it needs to compensate the configuration of time delay in the base station side of adjacent cell, can specifically measure and be in
The terminal for switching band is poor apart from the distance between current serving cell site and adjacent cell base station, determines that signal transmits the range difference
The time delay needed determines therefrom that the delay compensation, is pre-configured in the base station side of adjacent cell, so that base station is to get downlink same
When step signal will issue terminal, range difference can be compensated according to the delay compensation and then is sent.
Base station includes baseband processing unit (Base band Unit, BBU) and Remote Radio Unit (Radio Remote
Unit, RRU), the program one kind in the specific implementation, can be increased newly between the BBU and RRU of the adjacent cell base station one it is privately owned
Protocol message (such as TDL IR private message), user compensate time delay according to measurement or other concrete conditions at BBU
It is specified, RRU is sent to by BBU, the case where then RRU is according to the current area of terminal, dynamically according to the delay compensation
Current delay volume is updated, or prestores the delay compensation, comes into force after cell activation, specifically includes following two implementation:
The downlink synchronous signal is sent to by the first implementation, base station after preconfigured delay compensation
Before terminal device, the method also includes: the preconfigured delay compensation is sent to the RRU by the BBU.
Then the RRU of base station is updated current delay volume according to the delay compensation, and according to the time delay after new to end
End equipment sends downlink synchronous signal.
The downlink synchronous signal is sent to by second of implementation, base station after preconfigured delay compensation
Before terminal device, the method also includes: the preconfigured delay compensation is sent to the RRU by the BBU.
The RRU judge the delay compensation whether be more than the RRU caching capabilities；If it is not, then the RRU will be described
Delay compensation is cached.
It is cached, is come into force in cell activation, or receiving in the present solution, being either previously obtained delay compensation
It directly comes into force when to delay compensation, base station sends the specific implementation of downlink synchronous signal are as follows: RRU is according to the delay compensation
Downlink time delay is adjusted, and according to the downlink time delay adjusted, the downlink synchronous signal is sent to the terminal device, is compensated
The distance between the base station and adjacent cell base station of terminal device and current service cell are poor.
The sending method of synchronization signal provided in this embodiment, by when active arrangement compensates on the base station of adjacent cell
Prolong so that the base station to terminal send downlink synchronous signal when, by delay compensation to the distance between terminal and the base station
It compensates, under conditions of not changing hardware, elimination the distance between adjacent cell base station and main plot base station is poor, avoids terminal
Equipment can't detect the problem of synchronization signal of adjacent cell base station transmission, enable the terminal to the downlink that solution is transferred to adjacent cell arrival
Synchronization signal is initiated to measure to adjacent cell, completes cell switching.
Fig. 3 is the BBU/RRU latency measurement topological structure schematic diagram of base station provided by the invention；Fig. 4 provides for the present invention
Base station the adjustable integral point schematic diagram of downlink time delay, as shown in figure 3, for BBU and RRU#1, down direction T12 is optical fiber
Delay volume, T2a are RRU inner time delay amount, in order to make base station down eat dishes without rice or wine signal alignment, can choose and carry out in the side BBU/RRU
Corresponding delay compensation, thus in order to reach the purpose of the present invention, point can actually be adjusted there are two time delay configuration.Such as Fig. 4
It is shown, Ttotal in Fig. 4 be the data that down direction BBU is issued and reach RRU eat dishes without rice or wine between time delay total amount, it may be assumed that
Ttotal=BBU caches the downlink time delay of (DL CalBBU)+optical-fiber time-delay (T12)+RRU caching (DL CalRRU)+RRU
(T2a)；
For TDL IR, Ttotal is fixed value, determines (maximum is supported 40 kilometers and zoomed out) by fiber optic stretch distance,
And T12 and T2a is that RRU measurement reports value, therefore the adjustable integral point of delay compensation is on DL CalBBU and DL CalRRU.Wherein, RRU
Configurable cache amount is limited to RRU maximum compensation ability.In addition, while also to be examined if selection adjusts downlink time delay on RRU
The uplink of RRU is turned downlink for worry and downlink turns the corresponding overall offset of time slot switching point progress of uplink.
Therefore, it is compensated on the basis of the program is in original latency measurement and compensation, the adjustment of downlink time delay was both
It can carry out, can also be carried out on RRU on BBU.The example realized is explained below.
Fig. 5 is the flow chart of one example of sending method of synchronization signal provided by the invention, as shown in figure 5, in aforementioned side
On the basis of case, the specific implementation that this programme provides update time delay in a kind of sending method of synchronization signal is included at least
Following two:
The first implementation, the RRU judge whether to have had built up carrier wave；If having built up carrier wave on the RRU,
Then according to the delay compensation flush logic time delay register value and uplink and downlink timeslot switching point register value, downlink time delay is completed
Adjustment.
The first implementation, if not setting up carrier wave also on the RRU, in the period time delay configuration for waiting the BBU
The logic time delay register value is refreshed according to the delay compensation during message；In the carrier wave sent according to the BBU
It establishes order and establishes and the uplink and downlink timeslot switching point register value is refreshed according to the delay compensation during carrier wave, complete
The adjustment of downlink time delay.
Specific process is as follows:
BBU notifies RRU downlink time delay adjustment amount (delay compensation i.e. in aforementioned schemes) by private message, and RRU is received
To after the downlink time delay adjustment amount, RRU judge the downlink time delay adjustment amount whether be more than RRU caching capabilities, if so,
Then notify BBU delay compensation configuration failure, if not exceeding the caching capabilities of RRU, RRU saves the downlink time delay adjustment amount.
Then judge whether have been set up carrier wave on RRU, if it is, RRU flush logic time delay register value immediately, refreshes immediately
Uplink and downlink timeslot switching point register value, the adjustment for completing downlink time delay can so that base station is when sending downlink synchronous signal
It is sent according to downlink time delay adjusted.If not setting up carrier wave on RRU also, BBU period time delay is waited to configure message,
Refresh time delay adjustment amount in period time delay configuration process, BBU, which is issued, establishes carrier commands, carries out carrier wave foundation, is establishing carrier wave
During, refresh the numerical value in uplink and downlink timeslot switching point register, the adjustment of downlink time delay is completed, so that base station is under transmission
When line synchronising signal, it can be sent according to downlink time delay adjusted.
Fig. 6 a is downlink signal time delay effect schematic diagram in the prior art；Fig. 6 b is the downlink of base station provided by the invention
Signal time delay effect diagram；As shown in figures 6 a and 6b, the effect for executing front and back to the sending method of the synchronization signal carries out
Comparison is it is found that for terminal, and time delay of eating dishes without rice or wine i.e. distance, can be seen that work as from the above effect picture can not change antenna for base station
To terminal apart from when, in order to be aligned downlink signal in terminal side, can be reached with delay buffers amount on active accommodation RRU
The effect for changing distance configures interface and processing by newly-increased BBU/RRU downlink time delay, is not changing site, do not using pressure
Network optimization means do not need under the premise of upgrading existing terminal hardware ability yet, using lesser Resources Consumption (only software upgrading),
It has prevented excessive range difference that may be present between UE to the eNB of master/adjacent area two, has effectively solved the problems, such as handover failure, and
Delay parameter can be adjusted flexibly in invention according to the actual situation, all have replicability to this kind of problems.Terminal device is avoided to examine
The problem of not detecting the synchronization signal of adjacent cell base station transmission enables the terminal to the down-going synchronous letter that solution is transferred to adjacent cell arrival
Number, adjacent cell is initiated to measure, completes cell switching
Fig. 7 is the structural schematic diagram of base station embodiment one provided by the invention: as shown in fig. 7, the base station 10 includes:
Processing module 11, for obtaining downlink synchronous signal；
Transmission module 12, for after preconfigured delay compensation, the downlink synchronous signal to be sent to terminal
Equipment, so that the terminal device detects the downlink synchronous signal in search window.
Base station provided in this embodiment, for executing the technical solution of base station in any of the above-described embodiment, realization principle
It is similar with technical effect, the distance between terminal and the base station are compensated by delay compensation, in the item for not changing hardware
Under part, elimination the distance between adjacent cell base station and main plot base station is poor, and terminal device is avoided to can't detect adjacent cell base station hair
The problem of synchronization signal sent.
Fig. 8 is the structural schematic diagram of base station embodiment two provided by the invention: as shown in figure 8, in above-described embodiment one
On the basis of, the processing module 11 includes baseband processing unit BBU 111；The transmission module 12 includes Remote Radio Unit
RRU 121, then the downlink synchronous signal is sent to terminal after preconfigured delay compensation by the transmission module 12
Before equipment, the preconfigured delay compensation is sent to the RRU 121 by the BBU 111.
Optionally, the RRU 121 judge the delay compensation whether be more than the RRU 121 caching capabilities；
If it is not, then the RRU 121 is also used to cache the delay compensation.
Optionally, the RRU 121 adjusts downlink time delay according to the delay compensation；
The RRU 121 is sent to the terminal device according to the downlink time delay adjusted, by the downlink synchronous signal.
Optionally, the RRU 121 is specifically used for:
Judge whether to have had built up carrier wave；
If having built up carrier wave on the RRU 121, according to the delay compensation flush logic time delay register value and
Uplink and downlink timeslot switching point register value completes the adjustment of downlink time delay.
Optionally, the RRU 121 is also used to:
If not setting up carrier wave also on the RRU 121, in the mistake for the period time delay configuration message for waiting the BBU 111
The logic time delay register value is refreshed according to the delay compensation in journey；
It establishes during carrier wave is established in order in the carrier wave sent according to the BBU 111 according to the delay compensation brush
The new uplink and downlink timeslot switching point register value completes the adjustment of downlink time delay.
Base station provided in this embodiment, for executing the technical solution of base station in any of the above-described embodiment, realization principle
Similar with technical effect, details are not described herein.
In above-described embodiment in the specific implementation, it should be understood that processing module may be implemented as processor, which can
To be integrated in inside of base station, also can be only fitted to outside base station, realize processing function, transmission module can by receiver and/
Or transmitter etc. realizes that furthermore the base station may also include memory, for storing program code and data.
In the realization of above-mentioned base station, it should be appreciated that processor can be central processing unit (English: Central
Processing Unit, referred to as: CPU), it can also be other general processors, digital signal processor (English: Digital
Signal Processor, referred to as: DSP), specific integrated circuit (English: Application Specific Integrated
Circuit, referred to as: ASIC) etc..General processor can be microprocessor or the processor is also possible to any conventional place
Manage device etc..The step of method in conjunction with disclosed in the embodiment of the present invention, can be embodied directly in hardware processor and execute completion, or
Hardware and software module combination in person's processor execute completion.
Those of ordinary skill in the art will appreciate that: realize that all or part of the steps of above-mentioned each method embodiment can lead to
The relevant hardware of program instruction is crossed to complete.Program above-mentioned can be stored in a computer readable storage medium.The journey
When being executed, execution includes the steps that above-mentioned each method embodiment to sequence；And storage medium above-mentioned include: ROM, RAM, magnetic disk or
The various media that can store program code such as person's CD.
Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Pipe present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: its according to
So be possible to modify the technical solutions described in the foregoing embodiments, or to some or all of the technical features into
Row equivalent replacement；And these are modified or replaceed, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (12)
1. a kind of sending method of synchronization signal, which is characterized in that the described method includes:
Base station obtains downlink synchronous signal；
The base station is sent to terminal device after preconfigured delay compensation, by the downlink synchronous signal, so that institute
It states terminal device and detects the downlink synchronous signal in search window.
2. the method according to claim 1, wherein the base station includes that baseband processing unit BBU and radio frequency are drawn
Remote unit R RU, then the downlink synchronous signal is sent to terminal device after preconfigured delay compensation by the base station
Before, the method also includes:
The preconfigured delay compensation is sent to the RRU by the BBU.
3. according to the method described in claim 2, it is characterized in that, the method also includes:
The RRU judge the delay compensation whether be more than the RRU caching capabilities；
If it is not, then the RRU caches the delay compensation.
4. according to the method in claim 2 or 3, which is characterized in that the base station after preconfigured delay compensation,
The downlink synchronous signal is sent to terminal device:
The RRU adjusts downlink time delay according to the delay compensation；
The RRU is sent to the terminal device according to the downlink time delay adjusted, by the downlink synchronous signal.
5. according to the method described in claim 4, it is characterized in that, the RRU adjusts downlink time delay according to the delay compensation
Include:
The RRU judges whether to have had built up carrier wave；
If having built up carrier wave on the RRU, when according to the delay compensation flush logic time delay register value and uplink and downlink
Gap switching point register value completes the adjustment of downlink time delay.
6. according to the method described in claim 5, it is characterized in that, the method also includes:
If not setting up carrier wave also on the RRU, during waiting the period time delay of the BBU to configure message according to
Delay compensation refreshes the logic time delay register value；
It establishes in the carrier wave sent according to the BBU and is refreshed on described during carrier wave is established in order according to the delay compensation
Descending time slot switching point register value completes the adjustment of downlink time delay.
7. a kind of base station characterized by comprising
Processing module, for obtaining downlink synchronous signal；
Transmission module, for after preconfigured delay compensation, the downlink synchronous signal to be sent to terminal device, with
The terminal device is set to detect the downlink synchronous signal in search window.
8. base station according to claim 7, which is characterized in that the processing module includes baseband processing unit BBU；It is described
Transmission module includes radio frequency remote unit RRU, then the transmission module is after preconfigured delay compensation, by the downlink
Synchronization signal is sent to before terminal device, and the preconfigured delay compensation is sent to the RRU by the BBU.
9. base station according to claim 8, which is characterized in that the RRU judges whether the delay compensation is more than described
The caching capabilities of RRU；
If it is not, then the RRU is also used to cache the delay compensation.
10. base station according to claim 8 or claim 9, which is characterized in that the RRU adjusts downlink according to the delay compensation
Time delay；
The RRU is sent to the terminal device according to the downlink time delay adjusted, by the downlink synchronous signal.
11. base station according to claim 10, which is characterized in that the RRU is specifically used for:
Judge whether to have had built up carrier wave；
If having built up carrier wave on the RRU, when according to the delay compensation flush logic time delay register value and uplink and downlink
Gap switching point register value completes the adjustment of downlink time delay.
12. base station according to claim 11, which is characterized in that the RRU is also used to:
If not setting up carrier wave also on the RRU, during waiting the period time delay of the BBU to configure message according to
Delay compensation refreshes the logic time delay register value；
It establishes in the carrier wave sent according to the BBU and is refreshed on described during carrier wave is established in order according to the delay compensation
Descending time slot switching point register value completes the adjustment of downlink time delay.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710456148.XA CN109151920B (en) | 2017-06-16 | 2017-06-16 | Method for transmitting synchronization signal and base station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710456148.XA CN109151920B (en) | 2017-06-16 | 2017-06-16 | Method for transmitting synchronization signal and base station |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109151920A true CN109151920A (en) | 2019-01-04 |
| CN109151920B CN109151920B (en) | 2021-07-20 |
Family
ID=64830260
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710456148.XA Active CN109151920B (en) | 2017-06-16 | 2017-06-16 | Method for transmitting synchronization signal and base station |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109151920B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110213797A (en) * | 2019-05-29 | 2019-09-06 | 鼎桥通信技术有限公司 | Processing method, device, equipment and the storage medium for signal alignment of eating dishes without rice or wine |
| CN113498114A (en) * | 2020-04-07 | 2021-10-12 | 富华科精密工业（深圳）有限公司 | Signal synchronization method and device based on 5G small base station sniffer channel |
| CN113543039A (en) * | 2020-04-22 | 2021-10-22 | 成都鼎桥通信技术有限公司 | Multicast signal sending method and equipment |
| CN113574940A (en) * | 2019-09-25 | 2021-10-29 | Oppo广东移动通信有限公司 | Time synchronization method and related equipment |
Citations (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1859601A (en) * | 2006-02-28 | 2006-11-08 | 华为技术有限公司 | Method for configurating radio link parameter |
| CN1878351A (en) * | 2006-07-11 | 2006-12-13 | 华为技术有限公司 | Method and apparatus for obtaining interface time delay between wireless network controller and base station |
| CN101075848A (en) * | 2007-07-05 | 2007-11-21 | 华为技术有限公司 | System and method for synchronizing microcellular network basestation and base station |
| US20100054237A1 (en) * | 2008-09-04 | 2010-03-04 | Motorola, Inc. | Synchronization for femto-cell base stations |
| CN101841361A (en) * | 2009-03-18 | 2010-09-22 | 上海贝尔股份有限公司 | Method and device for controlling transmission delay in cooperative multipoint transmission system |
| CN101911537A (en) * | 2007-11-09 | 2010-12-08 | 高通股份有限公司 | Method and apparatus for defining a search window based on distance between access points |
| CN102265550A (en) * | 2008-12-23 | 2011-11-30 | 诺基亚公司 | Network synchronization method |
| CN102325366A (en) * | 2011-05-24 | 2012-01-18 | 大唐移动通信设备有限公司 | Data synchronization method, system and device |
| US20130100882A1 (en) * | 2011-10-25 | 2013-04-25 | Telefonaktiebolaget L M Ericsson (Publ) | Delay compensation during synchronization in a base station in a cellular communication network |
| WO2013169036A1 (en) * | 2012-05-11 | 2013-11-14 | Samsung Electronics Co., Ltd. | Methods and apparatus for uplink timing alignment in system with large number of antennas |
| US8879536B2 (en) * | 2011-10-07 | 2014-11-04 | Electronics And Telecommunications Research Institute | Apparatus and method for time synchronization |
| CN104168639A (en) * | 2013-05-16 | 2014-11-26 | 北京信威通信技术股份有限公司 | Base station clock synchronization method in communication network |
| CN104349451A (en) * | 2013-08-09 | 2015-02-11 | 电信科学技术研究院 | Method and equipment for synchronizing |
| CN104427528A (en) * | 2013-08-23 | 2015-03-18 | ***通信集团公司 | Transmission method, system and device for synchronizing signals |
| CN104812054A (en) * | 2014-01-27 | 2015-07-29 | 中兴通讯股份有限公司 | Time delay difference determination method, system, base station and user equipment |
| CN104918317A (en) * | 2014-03-11 | 2015-09-16 | ***通信集团广东有限公司 | Inter-base station interface delay compensation method, device and system |
| CN105915278A (en) * | 2007-10-12 | 2016-08-31 | 高通股份有限公司 | Femto cell synchronization and pilot search methodology |
| CN106059698A (en) * | 2016-06-03 | 2016-10-26 | 中国南方电网有限责任公司 | Time synchronization method and device based on TD-LTE wireless time service |
-
2017
- 2017-06-16 CN CN201710456148.XA patent/CN109151920B/en active Active
Patent Citations (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1859601A (en) * | 2006-02-28 | 2006-11-08 | 华为技术有限公司 | Method for configurating radio link parameter |
| CN1878351A (en) * | 2006-07-11 | 2006-12-13 | 华为技术有限公司 | Method and apparatus for obtaining interface time delay between wireless network controller and base station |
| CN101075848A (en) * | 2007-07-05 | 2007-11-21 | 华为技术有限公司 | System and method for synchronizing microcellular network basestation and base station |
| CN105915278A (en) * | 2007-10-12 | 2016-08-31 | 高通股份有限公司 | Femto cell synchronization and pilot search methodology |
| CN101911537A (en) * | 2007-11-09 | 2010-12-08 | 高通股份有限公司 | Method and apparatus for defining a search window based on distance between access points |
| US20100054237A1 (en) * | 2008-09-04 | 2010-03-04 | Motorola, Inc. | Synchronization for femto-cell base stations |
| CN102265550A (en) * | 2008-12-23 | 2011-11-30 | 诺基亚公司 | Network synchronization method |
| CN101841361A (en) * | 2009-03-18 | 2010-09-22 | 上海贝尔股份有限公司 | Method and device for controlling transmission delay in cooperative multipoint transmission system |
| CN102325366A (en) * | 2011-05-24 | 2012-01-18 | 大唐移动通信设备有限公司 | Data synchronization method, system and device |
| US8879536B2 (en) * | 2011-10-07 | 2014-11-04 | Electronics And Telecommunications Research Institute | Apparatus and method for time synchronization |
| US20130100882A1 (en) * | 2011-10-25 | 2013-04-25 | Telefonaktiebolaget L M Ericsson (Publ) | Delay compensation during synchronization in a base station in a cellular communication network |
| WO2013169036A1 (en) * | 2012-05-11 | 2013-11-14 | Samsung Electronics Co., Ltd. | Methods and apparatus for uplink timing alignment in system with large number of antennas |
| CN104168639A (en) * | 2013-05-16 | 2014-11-26 | 北京信威通信技术股份有限公司 | Base station clock synchronization method in communication network |
| CN104349451A (en) * | 2013-08-09 | 2015-02-11 | 电信科学技术研究院 | Method and equipment for synchronizing |
| CN104427528A (en) * | 2013-08-23 | 2015-03-18 | ***通信集团公司 | Transmission method, system and device for synchronizing signals |
| CN104812054A (en) * | 2014-01-27 | 2015-07-29 | 中兴通讯股份有限公司 | Time delay difference determination method, system, base station and user equipment |
| CN104918317A (en) * | 2014-03-11 | 2015-09-16 | ***通信集团广东有限公司 | Inter-base station interface delay compensation method, device and system |
| CN106059698A (en) * | 2016-06-03 | 2016-10-26 | 中国南方电网有限责任公司 | Time synchronization method and device based on TD-LTE wireless time service |
Non-Patent Citations (2)
| Title |
|---|
| QUALCOMM: "Comparison of CoMP Scenarios 3 and 4", 《3GPP TSG-RAN WG1 #65》 * |
| 张阳: "TD-SCDMA网络同步问题浅析", 《电信技术》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110213797A (en) * | 2019-05-29 | 2019-09-06 | 鼎桥通信技术有限公司 | Processing method, device, equipment and the storage medium for signal alignment of eating dishes without rice or wine |
| CN110213797B (en) * | 2019-05-29 | 2022-05-10 | 鼎桥通信技术有限公司 | Air interface signal alignment processing method, device, equipment and storage medium |
| CN113574940A (en) * | 2019-09-25 | 2021-10-29 | Oppo广东移动通信有限公司 | Time synchronization method and related equipment |
| CN113574940B (en) * | 2019-09-25 | 2023-08-15 | Oppo广东移动通信有限公司 | Time synchronization method and related equipment |
| CN113498114A (en) * | 2020-04-07 | 2021-10-12 | 富华科精密工业（深圳）有限公司 | Signal synchronization method and device based on 5G small base station sniffer channel |
| CN113543039A (en) * | 2020-04-22 | 2021-10-22 | 成都鼎桥通信技术有限公司 | Multicast signal sending method and equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109151920B (en) | 2021-07-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP7266617B2 (en) | Communication method and communication device | |
| US11770293B2 (en) | Transmission of NTN type and NTN type based configuration of operational parameters | |
| US9497718B2 (en) | Method, apparatus and system for synchronization between base stations | |
| CN109246834B (en) | EN dual-connection establishment method, eNB and gNB | |
| US20130127474A1 (en) | Control processing method of energy-saving cell and base station | |
| CN109151920A (en) | The sending method of synchronization signal and base station | |
| JP6154541B2 (en) | Management of dynamic radio coverage area transition with cooperative handover | |
| KR102436633B1 (en) | Method, device and apparatus for obtaining information, and computer storage medium | |
| US20110286433A1 (en) | Method, apparatus and system for handover between multi-carrier cells | |
| EP3090599B1 (en) | Methods and apparatuses for proximity-based service | |
| WO2018126462A1 (en) | Communication method, related device and system | |
| US20210306968A1 (en) | Timing advance change detection | |
| US11937113B2 (en) | Flexible early measurement reporting | |
| JP5810432B2 (en) | Method, apparatus and system for configuring a wireless network | |
| EP3442255B1 (en) | Method of handling measurement and related communication device | |
| AU2016417262A1 (en) | Method, device and computer program for primary cell change | |
| US20230108725A1 (en) | Method and apparatus for data transmission | |
| US10986552B2 (en) | Connection establishment in a 5G radio access network | |
| US10999702B2 (en) | Method for managing wireless system area, terminal and base station | |
| US10735974B2 (en) | Synchronising radio configuration parameters | |
| CN112788672A (en) | Secondary base station changing method, main base station, secondary base station and terminal | |
| EP3273741B1 (en) | Data transmission method and device | |
| KR101446012B1 (en) | Method and apparatus for improving service connection rate of mobile station in a communication system | |
| US20180288674A1 (en) | Millimeter wave access point states in a cluster set | |
| US20220287138A1 (en) | Setting a Different BWP Earlier in a Connection Establishment Process to a Wireless Network by a UE when Transitioning from an Idle or Inactive State |
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 |