CN103379614B - The air interface synchronization method of Home eNodeB and base station - Google Patents
The air interface synchronization method of Home eNodeB and base station Download PDFInfo
- Publication number
- CN103379614B CN103379614B CN201210105032.9A CN201210105032A CN103379614B CN 103379614 B CN103379614 B CN 103379614B CN 201210105032 A CN201210105032 A CN 201210105032A CN 103379614 B CN103379614 B CN 103379614B
- Authority
- CN
- China
- Prior art keywords
- time slot
- configuration
- home enodeb
- special time
- base station
- 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.)
- Active
Links
Landscapes
- Mobile Radio Communication Systems (AREA)
Abstract
The invention discloses air interface synchronization method and the base station of a kind of Home eNodeB, wherein, the method includes: benchmark Home eNodeB receives the synchronization relay request synchronizing Home eNodeB, is configured to synchronize Home eNodeB according to the special time slot of self and carries out synchronizing the time slot configuration of relay；Benchmark Home eNodeB sends synchronizing signal to synchronization Home eNodeB on descending special time slot.The air interface synchronization method of the Home eNodeB of the present invention and base station, play the Home eNodeB of Reference BTS effect after receiving relay synchronization request, special time slot is carried out self-adaptative adjustment, compensate for original synchronous method and the defect of multistage synchronization can only be provided in limited scene, thus reduce interference, improve the performance of whole network.
Description
Technical field
The present invention relates to TD-LTE technology in the communications field, in particular it relates to a kind of TD-LTE family based on relay of eating dishes without rice or wine
The synchronous method of base station, front yard and device.
Background technology
Home eNodeB, as Cellular Networks supplementing at in-door covering, provides the user speech and data, services.And TDD system
Synchronization between base station is required higher, interference can be produced between nonsynchronous base station, particularly result in TDD up-downgoing cross time-slot
Interference, cause network quality to decline.
There are two kinds of situations in the deployment of TD-LTE Home eNodeB, one be do not exist around Home eNodeB grand overlay network or
Other indoor distributed systems, now Home eNodeB can be got along well other base station synchronizations；Another kind is one or more Home eNodeB
Within being positioned at grand covering, if identical networking, it is necessary for providing the method synchronized between station, makes Home eNodeB and macro base station same
Step, and the latter is common deployment scenario.
Outdoor macro base station is typically obtained by gps satellite alignment system and synchronizes, due to Home eNodeB mainly in indoor environment
Middle deployment, is difficult to obtain gps signal, it is therefore desirable to provide the synchronous method for Home eNodeB.
Existing Home eNodeB synchronizes mainly to have two ways: line clock synchronizes and air interface synchronization.Line clock synchronizes
Mode currently mainly is to use IEEE1588V2 agreement, and the equipment at different levels of this major requirement transmission network and Home eNodeB are all
Support this agreement；Air interface synchronization mainly includes GPS synchronization or the air interface synchronization with macro base station, and GPS synchronizes at Home eNodeB
In deployment scenario, under indoor environment, gps signal is more weak and is even difficult to obtain, and causes engineering construction difficulty, and cost is high.It is situated between below
Continue the Home eNodeB of employing at present and the aerial method of synchronization of macro base station.
As it is shown in figure 1, the synchronization of Home eNodeB can synchronize by intercepting the downlink synchronous signal of adjacent macro base station
Set up and synchronized tracking, thus obtain synchronization with macro base station.Concrete step is as follows:
1. synchronize to set up: Home eNodeB uses process on all four with terminal cell search (to include major-minor Tong Bu letter
Number capture, uplink random access and timing advance adjust), with macro base station set up Tong Bu, see Fig. 2；
2. synchronized tracking: the synchronizing signal of Home eNodeB periodic acquisition macro base station, carries out synchroballistic, to eliminate timing
The accumulative effect of error.
During due to synchronized tracking, Home eNodeB needs while continual service, periodically receives macro base station signal.
In prior art, Home eNodeB relies primarily in DwPTS (descending special time slot) special subframe with the synchronized tracking of macro base station
CRS (cell reference signals) capture.As it is shown on figure 3, CRS (cell reference signals) is interspersed in data symbol, at son
Position in frame is 0,4,7, No. 11 OFDM symbol.
For continual service, synchronizing base station must catch by the CRS synchronizing base station in protection time slot (i.e. GP)
Obtain.As shown in Figure 4, if macro base station uses configuration 4 (Con4), during the time slot proportion of i.e. 12: 1: 1, during Home eNodeB special
Gap configuration can be configuration 2, the time slot proportion of i.e. 10: 3: 1.In this example, Home eNodeB is at the 2nd OFDM symbol of GP time slot
On number position, owing to there is no to send or receive the needs of terminal signaling, it is possible to intercept macro base station DwPTS in same frame
Last OFDM symbol (having CRS to send in this OFDM symbol) of special subframe, thus carry out synchronized tracking.Other are possible
The configuration relation of Home eNodeB and macro base station can be shown in Table 1, and table 1 is the configuration relation that Home eNodeB and macro base station carry out synchronized tracking
Table.
Table 1
Use the air interface synchronization method of above-mentioned Home eNodeB and macro base station, in the deployment scenario having multistage air interface synchronization demand
Under, the progression limitation problem of air interface synchronization can be caused, as shown in Figure 5.Home eNodeB 1 is positioned at the coverage of macro base station, as
Doorway, hall or window limit；And Home eNodeB 2 (being positioned at deeper indoor) can receive the signal of Home eNodeB 1, but not grand
In the coverage of base station.Now, if using above-mentioned air interface synchronization method, the only special time slot at macro base station is configured to
Put 4, i.e. 12: 1: 1, when the special time slot of Home eNodeB 1 is configured to configure 2,6 or 1, Home eNodeB 2 could be protected with Home eNodeB 1
Hold synchronization.And if macro base station takes other special time slots to configure, Home eNodeB 2 cannot keep Tong Bu (seeing with Home eNodeB 1
Table 1), cause interference with and hydraulic performance decline.Accordingly, it would be desirable to one can work under various deployment scenario and special time slot configure
, the air interface synchronization method of multistage synchronization can be realized.
Summary of the invention
It is an object of the invention to the defect limited for the progression of air interface synchronization in prior art, propose a kind of Home eNodeB
Air interface synchronization method and base station.
For achieving the above object, according to an aspect of the invention, it is provided the air interface synchronization method of a kind of Home eNodeB.
The air interface synchronization method of Home eNodeB according to embodiments of the present invention, including:
Benchmark Home eNodeB receives the synchronization relay request synchronizing Home eNodeB, according to the special time slot configuring condition of self
Every cycle T, the part in self special time slot being protected time slot configuration is descending special time slot；
Benchmark Home eNodeB sends synchronizing signal to synchronization Home eNodeB on descending special time slot.
In technique scheme, benchmark Home eNodeB will be from every cycle T according to self special time slot configuring condition
The step that part protection time slot configuration is descending special time slot in body special time slot specifically includes:
If the special time slot of benchmark Home eNodeB is configured to configure 5, then every cycle T by this special time slot configuration change
For configuration 6, configuration 7 or configuration 8；
If the special time slot of benchmark Home eNodeB is configured to configure 0, then every cycle T by this special time slot configuration change
For configuration 1, configuration 2, configuration 3 or configuration 4.
In technique scheme, this cycle T is the time span of N number of subframe, and N is positive integer.In technique scheme
In, method also includes: benchmark Home eNodeB sends the broadcast message carrying time slot configuration information, time slot to affiliated subdistrict terminal
Time slot configuration represented by configuration information is the time slot configuration that special time slot does not change.
In technique scheme, cycle T is included in and synchronizes in the synchronization relay request that Home eNodeB sends, or by base
Quasi-family base station is sent to after determining synchronize Home eNodeB.
For achieving the above object, according to an aspect of the invention, it is provided the air interface synchronization method of a kind of Home eNodeB.
The air interface synchronization method of Home eNodeB according to embodiments of the present invention, including:
Synchronize Home eNodeB and carry out cell searching, determine the Reference BTS synchronizing Home eNodeB；
Synchronize Home eNodeB to configure according to the special time slot of Reference BTS, carry out special time slot configuration for self；
Synchronize Home eNodeB every cycle T self protection time slot IT Reference BTS descending special time slot in
Cell reference signals, sets up synchronization with Reference BTS.
In technique scheme, synchronize Home eNodeB and determine that the step of Reference BTS specifically includes:
If synchronizing Home eNodeB to find macro base station in co-frequency neighbor cell, it is determined that base station on the basis of this macro base station；
Synchronize Home eNodeB to configure according to the special time slot of Reference BTS, have for self carrying out the step of special time slot configuration
Body includes:
If the special time slot of macro base station is configured to configure 4, then synchronize Home eNodeB when cycle T is by self special
Gap configuration change is configuration 1, configuration 2 or configuration 6；
If the special time slot of macro base station is configured to other configuration, then synchronize Home eNodeB every cycle T by the spy of self
Different time slot configuration changes into configuration 0 or configuration 5.In technique scheme, synchronize Home eNodeB and determine the step of Reference BTS
Specifically include:
If synchronizing Home eNodeB not find that in co-frequency neighbor cell macro base station finds benchmark Home eNodeB, it is determined that should
Base station on the basis of benchmark Home eNodeB；
Synchronize Home eNodeB to configure according to the special time slot of Reference BTS, have for self carrying out the step of special time slot configuration
Body includes:
If the special time slot of benchmark Home eNodeB is configured to configure 1, configuration 2 or configuration 6, then synchronize Home eNodeB every
The special time slot configuration change of self is configuration 0 or configuration 5 by cycle T；
If the special time slot of benchmark Home eNodeB is configured to configure 0 or configure 5, method also includes:
Synchronize Home eNodeB and issue synchronization relay request to benchmark Home eNodeB.In technique scheme, this cycle T is
The time span of N number of subframe, N is positive integer.
For achieving the above object, according to another aspect of the present invention, it is provided that a kind of benchmark Home eNodeB.
Benchmark Home eNodeB according to embodiments of the present invention, including:
Receive configuration module, for receiving the synchronization relay request synchronizing Home eNodeB, join according to the special time slot of self
It is descending special time slot that part in self special time slot is protected time slot configuration every cycle T by situation of putting；
Time slot sending module, for sending synchronizing signal to synchronization Home eNodeB on descending special time slot.
In technique scheme, receive configuration module and include:
Configuration determination submodule, the special time slot for judgment standard Home eNodeB configures；
Configure submodule, for the judged result according to configuration determination submodule, every cycle T by this special time slot
Configure: if special time slot is configured to configure 5, then every cycle T, this special time slot configuration change is configuration 6, configures 7
Or configuration 8；
If special time slot is configured to configure 0, then every cycle T by this special time slot configuration change be configuration 1, configuration 2,
Configuration 3 or configuration 4.
In technique scheme, benchmark Home eNodeB also includes:
Broadcast transmission module, for sending the broadcast message carrying time slot configuration information to affiliated subdistrict terminal.
For achieving the above object, according to another aspect of the present invention, it is provided that a kind of synchronization Home eNodeB.
Synchronization Home eNodeB according to embodiments of the present invention, including:
Search determines module, is used for carrying out cell searching, determines the Reference BTS synchronizing Home eNodeB；
Time slot configuration module, configures for the special time slot according to Reference BTS, carries out special time slot configuration；
Signal capture module, for every cycle T protecting under time slot IT Reference BTS at synchronization Home eNodeB
Cell reference signals in row special time slot, sets up synchronization with Reference BTS.
In technique scheme, search determines that module specifically includes:
Base station determines submodule, if for finding macro base station in co-frequency neighbor cell, it is determined that on the basis of this macro base station
Base station；
Time slot configuration module includes:
Configuration determination submodule, for judging the special time slot configuration of macro base station；
Configure submodule, for the judged result according to configuration determination submodule, family's base will have been synchronized every cycle T
The special time slot stood configures: if the special time slot of macro base station is configured to configure 4, then will synchronize family's base every cycle T
The special time slot configuration change stood is configuration 1, configuration 2 or configuration 6；
If the special time slot of macro base station be configured to other configuration, then every cycle T by synchronize Home eNodeB special time
Gap configuration change is configuration 0 or configuration 5.
In technique scheme, search determines that module specifically includes:
Base station determines submodule, if for not finding that in co-frequency neighbor cell macro base station finds benchmark Home eNodeB,
Then determine base station on the basis of this benchmark Home eNodeB；
Time slot configuration module includes:
Configuration determination submodule, the special time slot for judgment standard Home eNodeB configures；
Configure submodule, for the judged result according to configuration determination submodule, family's base will have been synchronized every cycle T
The special time slot stood configures: if the special time slot of benchmark Home eNodeB is configured to configure 1, configuration 2 or configuration 6, the most often
Every cycle T, the special time slot configuration change synchronizing Home eNodeB for configuration 0 or is configured 5；
Time slot configuration module includes:
Relay issues submodule, if the special time slot for benchmark Home eNodeB is configured to configure 0 or configure 5, Xiang Ji
Quasi-family base station issues synchronization relay request.
The air interface synchronization method of the Home eNodeB of the present invention, benchmark Home eNodeB and synchronization Home eNodeB, for for TDD system
The method that can provide multistage air interface synchronization under various deployment scenario of system design, wherein, plays the family of Reference BTS effect
Base station, after receiving relay synchronization request, carries out self-adaptative adjustment to special time slot, and its major advantage is as follows:
1. compensate for original synchronous method and the defect of multistage synchronization can only be provided in limited scene, thus reduce interference,
Improve the performance of whole network.
2. only take up GP time slot due to relay time slot, and do not have any other useful signal to transmit at GP time slot, thus right
The handling capacity of Home eNodeB does not affect.
Other features and advantages of the present invention will illustrate in the following description, and, partly become from description
Obtain it is clear that or understand by implementing the present invention.The purpose of the present invention and other advantages can be by the explanations write
Structure specifically noted in book, claims and accompanying drawing realizes and obtains.
Below by drawings and Examples, technical scheme is described in further detail.
Accompanying drawing explanation
Accompanying drawing is for providing a further understanding of the present invention, and constitutes a part for description, with the reality of the present invention
Execute example together for explaining the present invention, be not intended that limitation of the present invention.In the accompanying drawings:
Fig. 1 is the aerial Tong Bu structural representation according to Home eNodeB in prior art and macro base station；
Fig. 2 is the aerial flow chart the most Tong Bu setting up process according to Home eNodeB in prior art and macro base station；
Fig. 3 is according to Home eNodeB in prior art and the CRS reference signal scattergram in macro base station synchronized tracking；
Fig. 4 is the schematic diagram according to Home eNodeB in prior art Yu macro base station synchronized tracking；
Fig. 5 is the structural representation according to air interface synchronization multistage in prior art；
Fig. 6 is the structural representation according to the multistage air interface synchronization of the embodiment of the present invention；
Fig. 7 is the simultaneously operating schematic flow sheet according to embodiment of the present invention Home eNodeB A；
Fig. 8 is the special time slot period modulation schematic diagram synchronizing relay according to the present invention；
Fig. 9 for providing the schematic flow sheet of relay synchronization according to embodiment of the present invention Home eNodeB B；
Figure 10 is the structural representation according to embodiment of the present invention benchmark Home eNodeB；
Figure 11 is the structural representation synchronizing Home eNodeB according to the embodiment of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are illustrated, it will be appreciated that preferred reality described herein
Execute example be merely to illustrate and explain the present invention, be not intended to limit the present invention.
For ensureing that under various complicated deployment scenario, TD-LTE Home eNodeB can obtain synchronization by the way of unified,
Particularly providing the ability of multistage synchronization, the present invention proposes a kind of synchronization side based on relay of eating dishes without rice or wine for TDD system design
Method.This method, by being adjusted to " relay time slot " by on-demand for the special time slot of Home eNodeB, makes the Home eNodeB can be arbitrary special
Under different time slot configuration, synchronizing signal can be provided to other Home eNodeB, " relay " will be synchronized to other Home eNodeB, it is achieved
The multistage synchronization of Home eNodeB.In " relay time slot ", the configuration of UpPTS is constant, and original part GP is configured to
DwPTS, so makes other Home eNodeB can listen to the CRS of DwPTS in the GP position of self, thus obtains synchronization.Eventually
End is not aware that the existence of relay time slot, does not i.e. receive in former GP position (DwPTS position newly-increased after adjustment) or sends and appoints
What signal, therefore normally can work by original mode.
Embodiment of the method
According to an aspect of the invention, it is provided the air interface synchronization method of a kind of Home eNodeB.
The air interface synchronization method of Home eNodeB according to embodiments of the present invention, including:
Benchmark Home eNodeB receives the synchronization relay request synchronizing Home eNodeB, according to the special time slot configuring condition of self
Every cycle T, the part in self special time slot being protected time slot configuration is descending special time slot；
Benchmark Home eNodeB sends synchronizing signal to synchronization Home eNodeB on descending special time slot.
In technique scheme, benchmark Home eNodeB will be from every cycle T according to self special time slot configuring condition
The step that part protection time slot configuration is descending special time slot in body special time slot specifically includes:
If the special time slot of benchmark Home eNodeB is configured to configure 5, then every cycle T by this special time slot configuration change
For configuration 6, configuration 7 or configuration 8；
If the special time slot of benchmark Home eNodeB is configured to configure 0, then every cycle T by this special time slot configuration change
For configuration 1, configuration 2, configuration 3 or configuration 4.
In technique scheme, this cycle T is the time span of N number of subframe, and N is positive integer.In technique scheme
In, method also includes: benchmark Home eNodeB sends the broadcast message carrying time slot configuration information, time slot to affiliated subdistrict terminal
Time slot configuration represented by configuration information is the time slot configuration that special time slot does not change.
In technique scheme, cycle T is included in and synchronizes in the synchronization relay request that Home eNodeB sends, or by base
Quasi-family base station is sent to after determining synchronize Home eNodeB.
According to another aspect of the present invention, it is provided that the air interface synchronization method of another kind of Home eNodeB.
The air interface synchronization method of Home eNodeB according to embodiments of the present invention, including:
Synchronize Home eNodeB and carry out cell searching, determine the Reference BTS synchronizing Home eNodeB；
Synchronize Home eNodeB to configure according to the special time slot of Reference BTS, carry out special time slot configuration for self；
Synchronize Home eNodeB every cycle T self protection time slot IT Reference BTS descending special time slot in
Cell reference signals, sets up synchronization with Reference BTS.
In technique scheme, synchronize Home eNodeB and determine that the step of Reference BTS specifically includes:
If synchronizing Home eNodeB to find macro base station in co-frequency neighbor cell, it is determined that base station on the basis of this macro base station；
Synchronize Home eNodeB to configure according to the special time slot of Reference BTS, have for self carrying out the step of special time slot configuration
Body includes:
If the special time slot of macro base station is configured to configure 4, then synchronize Home eNodeB when cycle T is by self special
Gap configuration change is configuration 1, configuration 2 or configuration 6；
If the special time slot of macro base station is configured to other configuration, then synchronize Home eNodeB every cycle T by the spy of self
Different time slot configuration changes into configuration 0 or configuration 5.In technique scheme, synchronize Home eNodeB and determine the step of Reference BTS
Specifically include:
If synchronizing Home eNodeB not find that in co-frequency neighbor cell macro base station finds benchmark Home eNodeB, it is determined that should
Base station on the basis of benchmark Home eNodeB；
Synchronize Home eNodeB to configure according to the special time slot of Reference BTS, have for self carrying out the step of special time slot configuration
Body includes:
If the special time slot of benchmark Home eNodeB is configured to configure 1, configuration 2 or configuration 6, then synchronize Home eNodeB every
The special time slot configuration change of self is configuration 0 or configuration 5 by cycle T；
If the special time slot of benchmark Home eNodeB is configured to configure 0 or configure 5, method also includes:
Synchronize Home eNodeB and issue synchronization relay request to benchmark Home eNodeB.In technique scheme, this cycle T is
The time span of N number of subframe, N is positive integer.
According to embodiments of the present invention, it is provided that the air interface synchronization method of a kind of Home eNodeB, as shown in fig. 6-7, this enforcement
Example includes:
Step 102: Home eNodeB A carries out cell searching when start, finds co-frequency neighbor cell；The base station of co-frequency neighbor cell
All kinds of deployment scenario according to A, it may be possible to macro base station, it is also possible to Home eNodeB；
Step 104: Home eNodeB A preferentially sets up synchronization with macro base station, without searching macro base station, then set up with
The synchronization of Home eNodeB B；Synchronization is set up process and is used process on all four with terminal cell search (to include major-minor Tong Bu letter
Number capture, uplink random access and timing advance adjust), the source base station that comes of synchronizing signal is referred to as Reference BTS；
Step 106: Home eNodeB A configures according to the special time slot of Reference BTS, determines the special time slot configuration of self: as
Really the special time slot of Reference BTS is configured to configure 4, then self special time slot is configured to configure 2,6 or 1, if Reference BTS
Special time slot is configured to remaining configuration, then self special time slot is configured to configure 5 or configure 0；
Step 108: if Reference BTS is macro base station, then Home eNodeB A by the DwPTS intercepting Reference BTS special time
CRS signal in gap, carries out synchronizing to keep；
In step 108, if the special time slot of macro base station is configured to configure 4, then the special time slot configuration of Home eNodeB A
For configuration 2,6 or 1, if the special time slot of macro base station is configured to remaining configuration, then the special time slot of Home eNodeB A is configured to join
Put 5 or configure 0；
Step 110: if Reference BTS is Home eNodeB B, and the special time slot of B is configured to configure 2, configuration 6 or configuration
1, then Home eNodeB A is by intercepting the CRS signal in the DwPTS special time slot of Reference BTS, carries out synchronizing to keep；Now, family
The special time slot of base station, front yard A is configured to configure 0 or configure 5, and the special time slot of macro base station is configured to configure 4；
Step 112: if Home eNodeB A finds that Reference BTS is Home eNodeB B, but the special time slot of Home eNodeB B is joined
Being set to 5 or 0, then initiate a relay synchronization request to Home eNodeB B, this request can be passed through:
Step 1122: Home eNodeB A is by eating dishes without rice or wine or X2 interface sends demand signalling to Home eNodeB B；Or,
Step 1124: Home eNodeB A initiates a request to network management system, network management system transmit under Home eNodeB B
Order；
Step 114: after Home eNodeB B receives the relay synchronization request of Home eNodeB A, join according to the special time slot of self
Put, carry out synchronizing relay, as it is shown in figure 9, concrete grammar is as follows for Home eNodeB A:
Step 1142: if the special time slot of Home eNodeB B is configured to configure 5, when i.e. 3: 9: 2, then Home eNodeB B will be from
The special time slot configuration cycle of body sexually revises as configuration 8 (or 7, or 6), and as shown in Figure 8, cycle T can be that every subframe is long
(10ms) or N subframe is long, i.e. using special time slot configuration 8 (or 7, or 6) every N number of subframe (10ms), N is positive integer；To change
The special time slot becoming configuration is referred to as " relay time slot ", does not send to conventional terminal and control or traffic signaling in relay time slot；
Step 1144: if the special time slot of Home eNodeB B is configured to 0, when i.e. 3: 10: 1, then Home eNodeB B is by special
Time slot configuration periodically-varied is configuration 4 (or 3,2,1), cycle T can be every subframe length (10ms) or N subframe long, i.e. every N
Individual subframe (10ms) uses special time slot configuration 4 (or 3,2,1)；
Step 1146: Home eNodeB B, in the broadcast message to this cell terminal, will special time slot configuration broadcast be former
Having configuration (configuration 5 or 0), such terminal is still received according to original mode of operation；And at relay time slot, terminal is thought newly
Should be GP on the DwPTS position increased, the most do not do any reception or send operation, thus not affect the normal work of terminal；
Step 1148: Home eNodeB B is to Home eNodeB A one configuration successful of feedback or the feedback of failure；
Step 1149: the value of relay slot cycle T can be included in Home eNodeB A and synchronize to the relay of Home eNodeB B
In demand signalling, it is also possible to determined by Home eNodeB B, then feeding back to Home eNodeB A, concrete value need to be according to Home eNodeB
Synchronize holding capacity and demand determines；
Step 116: Home eNodeB A receives after the synchronization relay of Home eNodeB B successfully feeds back, by cycle N at self GP
Receive the DwPTS signal of Home eNodeB B on position, carry out synchronized tracking and compensation, to eliminate the accumulative effect of timing error.
It should be noted that in above-mentioned steps 112,114,116, Home eNodeB A and Home eNodeB B is come alternately by information
Synchronize.Another kind of optional scheme is, if the mode of operation of Home eNodeB B is special time slot 5 or 0, just to give tacit consent to unlatching
Synchronize relay pattern, use the cycle T of acquiescence, be operated according to the mode of step 1144 and 1146；Home eNodeB A detects
The mode of operation of Home eNodeB B is special time slot 5 or 0, just uses the cycle T of acquiescence to receive family's base on the GP position of self
Stand the DwPTS signal of B, carry out synchronized tracking and compensation, to eliminate the accumulative effect of timing error.
The air interface synchronization method of the Home eNodeB of the present invention, can be under various deployment scenario for design for TDD system
The method providing multistage air interface synchronization, wherein, plays the Home eNodeB of Reference BTS effect after receiving relay synchronization request, right
Special time slot carries out self-adaptative adjustment, and its major advantage is as follows:
1. compensate for original synchronous method to provide in limited scene (as macro base station special time slot is configured to configure 4)
The defect of multistage synchronization, thus reduce interference, improve the performance of whole network.
2. only take up GP time slot due to relay time slot, and do not have any other useful signal to transmit at GP time slot, thus right
The handling capacity of Home eNodeB does not affect.
Device embodiment
According to embodiments of the present invention, it is provided that a kind of benchmark Home eNodeB.As shown in Figure 10, the present embodiment includes:
Receive configuration module 10, for receiving the synchronization relay request synchronizing Home eNodeB, according to the special time slot of self
It is descending special time slot that part in self special time slot is protected time slot configuration every cycle T by configuring condition；
Time slot sending module 20, for sending synchronizing signal to synchronization Home eNodeB on descending special time slot.
Receive configuration module 10 to include:
Configuration determination submodule 11, the special time slot for judgment standard Home eNodeB configures；
Configured submodule 12, for according to the judged result of configuration determination submodule, every cycle T by this special time
Gap configures: if special time slot is configured to configure 5, then every cycle T, this special time slot configuration change is configuration 6, is joined
Put 7 or configure 8；
If special time slot is configured to configure 0, then every cycle T by this special time slot configuration change be configuration 1, configuration 2,
Configuration 3 or configuration 4.
Benchmark Home eNodeB also includes:
Broadcast transmission module 30, for sending the broadcast message carrying time slot configuration information to affiliated subdistrict terminal.
According to embodiments of the present invention, it is provided that a kind of synchronization Home eNodeB.As shown in figure 11, the present embodiment includes:
Search determines module 40, is used for carrying out cell searching, determines the Reference BTS synchronizing Home eNodeB；
Time slot configuration module 50, configures for the special time slot according to Reference BTS, carries out special time slot configuration；
Signal capture module 60, for synchronizing the protection time slot IT Reference BTS of Home eNodeB every cycle T
Cell reference signals in descending special time slot, sets up synchronization with Reference BTS.
Search determines that module 40 specifically includes:
Base station determines submodule 41, if for finding macro base station in co-frequency neighbor cell, it is determined that this macro base station is base
Quasi-base station；
Time slot configuration module 50 includes:
Configuration determination submodule 51, for judging the special time slot configuration of macro base station；
Configure submodule 52, for the judged result according to configuration determination submodule, family will have been synchronized every cycle T
The special time slot of base station configures: if the special time slot of macro base station is configured to configure 4, then will synchronize family every cycle T
The special time slot configuration change of base station is configuration 1, configuration 2 or configuration 6；
If the special time slot of macro base station be configured to other configuration, then every cycle T by synchronize Home eNodeB special time
Gap configuration change is configuration 0 or configuration 5.
Search determines that module 40 specifically includes:
Base station determines submodule 41, if for not finding that in co-frequency neighbor cell macro base station finds benchmark family base
Stand, it is determined that base station on the basis of this benchmark Home eNodeB；
Time slot configuration module 50 includes:
Configuration determination submodule 51, the special time slot for judgment standard Home eNodeB configures；
Configure submodule 52, for the judged result according to configuration determination submodule, family will have been synchronized every cycle T
The special time slot of base station configures: if the special time slot of benchmark Home eNodeB is configured to configure 1, configuration 2 or configuration 6, then
Every cycle T, the special time slot configuration change synchronizing Home eNodeB for configuration 0 or is configured 5；
Time slot configuration module 50 also includes:
Relay issues submodule 53, if the special time slot for benchmark Home eNodeB is configured to configure 0 or configure 5, to
Benchmark Home eNodeB issues synchronization relay request.
The benchmark Home eNodeB of the present invention and synchronization Home eNodeB, can be in various deployment fields for design for TDD system
The base station of multistage air interface synchronization is provided under scape；The benchmark Home eNodeB of the present invention and synchronization Home eNodeB, do not have existing terminal
Impact, it is possible to compatible existing terminal, and macro base station is not the most affected；At network side, need benchmark Home eNodeB and with
Step Home eNodeB adds corresponding functional module, without newly-increased radio frequency or transceiver module；Wherein, benchmark Home eNodeB exists
After receiving relay synchronization request, special time slot being carried out self-adaptative adjustment, its major advantage is as follows:
1. compensate for original synchronous method to provide in limited scene (as macro base station special time slot is configured to configure 4)
The defect of multistage synchronization, thus reduce interference, improve the performance of whole network.
2. only take up GP time slot due to relay time slot, and do not have any other useful signal to transmit at GP time slot, thus right
The handling capacity of Home eNodeB does not affect.
The present invention can have the detailed description of the invention of multiple multi-form, combines accompanying drawing to this above as a example by Fig. 6-Figure 11
The explanation for example of bright technical scheme, this is not meant to that the instantiation that the present invention is applied can only be confined to specific flow process
Or in example structure, those of ordinary skill in the art is it is to be appreciated that specific embodiments presented above is multiple
Some examples in its preferred usage, the embodiment of any embodiment the claims in the present invention all should be wanted in technical solution of the present invention
Ask within the scope of protection.
One of ordinary skill in the art will appreciate that: all or part of step realizing said method embodiment can be passed through
The hardware that programmed instruction is relevant completes, and aforesaid program can be stored in a computer read/write memory medium, this program
Upon execution, perform to include the step of said method embodiment；And aforesaid storage medium includes: ROM, RAM, magnetic disc or light
The various medium that can store program code such as dish.
Finally it is noted that the foregoing is only the preferred embodiments of the present invention, it is not limited to the present invention,
Although being described in detail the present invention with reference to previous embodiment, for a person skilled in the art, it still may be used
So that the technical scheme described in foregoing embodiments to be modified, or wherein portion of techniques feature is carried out equivalent.
All within the spirit and principles in the present invention, any modification, equivalent substitution and improvement etc. made, should be included in the present invention's
Within protection domain.
Claims (11)
1. the air interface synchronization method of a Home eNodeB, it is characterised in that including:
Benchmark Home eNodeB receives the synchronization relay request synchronizing Home eNodeB, according to self special time slot configuring condition every
It is descending special time slot that part in self special time slot is protected time slot configuration by cycle T；
Described benchmark Home eNodeB sends synchronizing signal to described synchronization Home eNodeB on descending special time slot；
Wherein, benchmark Home eNodeB according to self special time slot configuring condition every cycle T by the portion in self special time slot
Code insurance protects the step that time slot configuration is descending special time slot and specifically includes:
If the special time slot of benchmark Home eNodeB is configured to configure 5, then every cycle T by this special time slot configuration change for joining
Put 6, configuration 7 or configuration 8；
If the special time slot of benchmark Home eNodeB is configured to configure 0, then every cycle T by this special time slot configuration change for joining
Put 1, configuration 2, configuration 3 or configuration 4；
Wherein, the time slot proportion of configuration 0 is 3:10:1, and the time slot proportion of configuration 1 is 9:4:2, and the time slot proportion of configuration 2 is 10:
3:1, the time slot proportion of configuration 3 is 11:2:1, and the time slot proportion of configuration 4 is 12:1:1, and the time slot proportion of configuration 5 is 3:9:2, joins
The time slot proportion putting 6 is 9:3:2, and the time slot proportion of configuration 7 is 10:2:2, and the time slot proportion of configuration 8 is 11:1:2.
Method the most according to claim 1, it is characterised in that this cycle T is the time span of N number of subframe, N is the most whole
Number.
Method the most according to claim 1, it is characterised in that also include: described benchmark Home eNodeB is to affiliated subdistrict eventually
End sends the broadcast message carrying time slot configuration information, and the time slot configuration represented by described time slot configuration information is special time slot
There is no the time slot configuration changed.
Method the most according to claim 2, it is characterised in that described cycle T is included in and synchronizes the same of Home eNodeB transmission
In step relay request, or it is sent to after being determined by benchmark Home eNodeB synchronize Home eNodeB.
5. the air interface synchronization method of a Home eNodeB, it is characterised in that including:
Synchronize Home eNodeB and carry out cell searching, determine the Reference BTS of described synchronization Home eNodeB；
Described synchronization Home eNodeB configures according to the special time slot of described Reference BTS, carries out special time slot configuration for self；
Synchronize Home eNodeB every cycle T protecting in the descending special time slot of Reference BTS described in time slot IT at self
Cell reference signals, sets up synchronization with described Reference BTS；
Wherein, synchronize Home eNodeB and determine that the step of Reference BTS specifically includes:
If synchronizing Home eNodeB to find macro base station in co-frequency neighbor cell, it is determined that base station on the basis of this macro base station；
Described synchronization Home eNodeB configures according to the special time slot of described Reference BTS, carries out the step of special time slot configuration for self
Suddenly specifically include:
If the special time slot of described macro base station is configured to configure 4, the most described synchronization Home eNodeB every cycle T by the spy of self
Different time slot configuration changes into configuration 1, configuration 2 or configuration 6；
If the special time slot of described macro base station be configured to other configuration, the most described synchronization Home eNodeB every cycle T by self
Special time slot configuration change for configuration 0 or configuration 5；
Wherein, the time slot proportion of configuration 0 is 3:10:1, and the time slot proportion of configuration 1 is 9:4:2, and the time slot proportion of configuration 2 is 10:
3:1, the time slot proportion of configuration 4 is 12:1:1, and the time slot proportion of configuration 5 is 3:9:2, and the time slot proportion of configuration 6 is 9:3:2.
Method the most according to claim 5, it is characterised in that synchronize Home eNodeB and determine that the step of Reference BTS is specifically wrapped
Include:
If synchronizing Home eNodeB not find that in co-frequency neighbor cell macro base station finds benchmark Home eNodeB, it is determined that this benchmark
Base station on the basis of Home eNodeB；
Described synchronization Home eNodeB configures according to the special time slot of described Reference BTS, carries out the step of special time slot configuration for self
Suddenly specifically include:
If the special time slot of described benchmark Home eNodeB is configured to configure 1, configuration 2 or configuration 6, the most described synchronization Home eNodeB
Every cycle T, the special time slot configuration change of self for configuration 0 or is configured 5；
If the special time slot of described benchmark Home eNodeB is configured to configure 0 or configure 5, method also includes:
Described synchronization Home eNodeB issues synchronization relay request to benchmark Home eNodeB.
7., according to the method described in claim 5 or 6, it is characterised in that this cycle T is the time span of N number of subframe, N is just
Integer.
8. a benchmark Home eNodeB, it is characterised in that including:
Receive configuration module, for receiving the synchronization relay request synchronizing Home eNodeB, configure feelings according to the special time slot of self
It is descending special time slot that part in self special time slot is protected time slot configuration every cycle T by condition；
Time slot sending module, for sending synchronizing signal to described synchronization Home eNodeB on descending special time slot；
Wherein, the described configuration module that receives includes:
Configuration determination submodule, the special time slot for judgment standard Home eNodeB configures；
Configure submodule, for the judged result according to configuration determination submodule, every cycle T, this special time slot has been carried out
Configuration: if special time slot is configured to configure 5, then be configuration 6 every cycle T by this special time slot configuration change, configure 7 or join
Put 8；
If special time slot is configured to configure 0, then every cycle T, this special time slot configuration change is configuration 1, configuration 2, configures
3 or configuration 4；
Wherein, the time slot proportion of configuration 0 is 3:10:1, and the time slot proportion of configuration 1 is 9:4:2, and the time slot proportion of configuration 2 is 10:
3:1, the time slot proportion of configuration 3 is 11:2:1, and the time slot proportion of configuration 4 is 12:1:1, and the time slot proportion of configuration 5 is 3:9:2, joins
The time slot proportion putting 6 is 9:3:2, and the time slot proportion of configuration 7 is 10:2:2, and the time slot proportion of configuration 8 is 11:1:2.
Benchmark Home eNodeB the most according to claim 8, it is characterised in that also include:
Broadcast transmission module, for sending the broadcast message carrying time slot configuration information to affiliated subdistrict terminal.
10. one kind synchronizes Home eNodeB, it is characterised in that including:
Search determines module, is used for carrying out cell searching, determines the Reference BTS of described synchronization Home eNodeB；
Time slot configuration module, configures for the special time slot according to described Reference BTS, carries out special time slot configuration；
Signal capture module, for every cycle T protecting under Reference BTS described in time slot IT at synchronization Home eNodeB
Cell reference signals in row special time slot, sets up synchronization with described Reference BTS；
Wherein, described search determines that module specifically includes:
Base station determines submodule, if for finding macro base station in co-frequency neighbor cell, it is determined that base station on the basis of this macro base station；
Described time slot configuration module includes:
Configuration determination submodule, for judging the special time slot configuration of macro base station；
Configure submodule, for the judged result according to configuration determination submodule, Home eNodeB will have been synchronized every cycle T
Special time slot configures: if the special time slot of described macro base station is configured to configure 4, then will synchronize family's base every cycle T
The special time slot configuration change stood is configuration 1, configuration 2 or configuration 6；
If the special time slot of described macro base station be configured to other configuration, then every cycle T by synchronize Home eNodeB special time
Gap configuration change is configuration 0 or configuration 5；
Wherein, the time slot proportion of configuration 0 is 3:10:1, and the time slot proportion of configuration 1 is 9:4:2, and the time slot proportion of configuration 2 is 10:
3:1, the time slot proportion of configuration 4 is 12:1:1, and the time slot proportion of configuration 5 is 3:9:2, and the time slot proportion of configuration 6 is 9:3:2.
11. synchronization Home eNodeB according to claim 10, it is characterised in that described search determines that module specifically includes:
Base station determines submodule, if for not finding that in co-frequency neighbor cell macro base station finds benchmark Home eNodeB, the most really
Base station on the basis of this benchmark Home eNodeB fixed；
Described time slot configuration module includes:
Configuration determination submodule, the special time slot for judgment standard Home eNodeB configures；
Configure submodule, for the judged result according to configuration determination submodule, Home eNodeB will have been synchronized every cycle T
Special time slot configures: if the special time slot of described benchmark Home eNodeB is configured to configure 1, configuration 2 or configuration 6, the most often
Every cycle T, the special time slot configuration change synchronizing Home eNodeB for configuration 0 or is configured 5；
Described time slot configuration module also includes:
Relay issues submodule, if the special time slot for described benchmark Home eNodeB is configured to configure 0 or configure 5, Xiang Ji
Quasi-family base station issues synchronization relay request.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210105032.9A CN103379614B (en) | 2012-04-11 | 2012-04-11 | The air interface synchronization method of Home eNodeB and base station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210105032.9A CN103379614B (en) | 2012-04-11 | 2012-04-11 | The air interface synchronization method of Home eNodeB and base station |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103379614A CN103379614A (en) | 2013-10-30 |
| CN103379614B true CN103379614B (en) | 2016-12-07 |
Family
ID=49464044
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210105032.9A Active CN103379614B (en) | 2012-04-11 | 2012-04-11 | The air interface synchronization method of Home eNodeB and base station |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103379614B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015106445A1 (en) * | 2014-01-17 | 2015-07-23 | 富士通株式会社 | Interaction method for synchronization between cells, apparatus and communication system |
| CN104812049B (en) * | 2014-01-24 | 2018-10-12 | ***通信集团公司 | A kind of method and apparatus of synchronization among base stations |
| WO2016000142A1 (en) * | 2014-06-30 | 2016-01-07 | 华为技术有限公司 | Clock synchronization method, system and related device |
| CN105636234B (en) * | 2014-10-27 | 2021-06-25 | 中兴通讯股份有限公司 | Station opening method, base station controller and station opening system |
| CN105917711B (en) * | 2014-12-24 | 2019-11-19 | 华为技术有限公司 | Communication system, base station and clock synchronizing method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101873688A (en) * | 2009-04-22 | 2010-10-27 | 鼎桥通信技术有限公司 | Synchronization method of femtocell and macrocell and access method of user equipment |
| CN102186236A (en) * | 2011-04-27 | 2011-09-14 | 京信通信***（中国）有限公司 | Method and device for timing synchronization among micro-cellular base stations |
-
2012
- 2012-04-11 CN CN201210105032.9A patent/CN103379614B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101873688A (en) * | 2009-04-22 | 2010-10-27 | 鼎桥通信技术有限公司 | Synchronization method of femtocell and macrocell and access method of user equipment |
| CN102186236A (en) * | 2011-04-27 | 2011-09-14 | 京信通信***（中国）有限公司 | Method and device for timing synchronization among micro-cellular base stations |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103379614A (en) | 2013-10-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7760694B2 (en) | Deviating from a transmission map to communicate in a wireless network | |
| US10165535B2 (en) | Methods and wireless devices for enabling synchronization in D2D communications | |
| US9325480B2 (en) | Methods and device for performing device-to-device communication | |
| KR101208808B1 (en) | A method for generating the group id of the random access response message, and a random access method | |
| US10687366B2 (en) | SSB to RACH resource associations and related RACH configuration contents in multi-beam system | |
| US9107160B2 (en) | Uplink synchronization method and apparatus | |
| CN101282168B (en) | Transmission method and system for TDD mobile communication system to share time wireless frame | |
| CN103379614B (en) | The air interface synchronization method of Home eNodeB and base station | |
| US20140328226A1 (en) | Data transmission method and device | |
| KR20160148011A (en) | Device-to-device resource pattern signaling | |
| US20160204926A1 (en) | Transmission method and apparatus in tdd-fdd joint system | |
| KR101621292B1 (en) | Method, base station and system for synchronizing lte-tdd network and wimax network | |
| CN104469926A (en) | Transmission method and device in D2D system | |
| CN104080161A (en) | Physical uplink shared channel transmission method and user equipment | |
| CN101588337A (en) | Optimizing time division multiplexing frame structure parameters method, communication means, system and terminal | |
| CN104284445A (en) | Multi-carrier scheduling method and device in D2D system | |
| US11190627B2 (en) | Telegram splitting for slotted ALOHA | |
| CN106961742B (en) | A kind of communication means and device of uplink LAA | |
| US11515990B2 (en) | Control using NR TDD | |
| US9560671B2 (en) | Method and base station for transmitting scheduling information | |
| CN110505636A (en) | A kind of synchronisation control means for relayed communications | |
| CN103248466A (en) | Automatic hybrid retransmission method and system based on dynamic TDD (time division duplex) | |
| KR20210093789A (en) | Method and apparatus for synchronization in wireless communication system | |
| US9900889B2 (en) | Terminal and method for allocating resource | |
| KR102127901B1 (en) | Base station, and method thereof for supporting data trnsmission and receiving |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |