CN102014405A - Base station and synchronous processing method thereof in layered network - Google Patents
Base station and synchronous processing method thereof in layered network Download PDFInfo
- Publication number
- CN102014405A CN102014405A CN2009102435026A CN200910243502A CN102014405A CN 102014405 A CN102014405 A CN 102014405A CN 2009102435026 A CN2009102435026 A CN 2009102435026A CN 200910243502 A CN200910243502 A CN 200910243502A CN 102014405 A CN102014405 A CN 102014405A
- Authority
- CN
- China
- Prior art keywords
- base station
- synchronisation source
- synchronously
- synchronisation
- synchronous
- 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.)
- Pending
Links
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W56/00—Synchronisation arrangements
- H04W56/001—Synchronization between nodes
- H04W56/0015—Synchronization between nodes one node acting as a reference for the others
-
- 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 invention discloses a base station and a synchronous processing method thereof in a layered network. The synchronous processing method comprises the following steps of: measuring the signal intensity of a cell exclusive pilot signal of a current synchronous source base station by the base station while keeping the synchronous process; determining and judging whether the base station is in the out-of-step state or not according to the signal intensity by the base station; and re-selecting a synchronous source and then carrying out synchronization by the base station if the base station is in the out-of-step state. The invention can find the out-of-step state in time and ensure that the base station is in the synchronous state and provides necessary supplement for the synchronous scheme in the layered network.
Description
Technical field
The present invention relates to mobile communication technology, the synchronization processing method and the base station of base station in particularly a kind of hierarchical network.
Background technology
In mobile communications network, along with growing requirement to data speed and covering, traditional provides the method for access can not meet the demands with macro base station, adopt cell splitting, and can be good at addressing this is that at hot zones or some lower powered base stations of indoor deployment (Home/Pico/Femto/Relay, family base station/Pico cell formula base station/femtocell formula base station/midsequent base station).This lower powered base station is a kind of base station equipment that is applied under family's indoor environment, working environment or other the little overlay environment, can make operator that high data rate, attractive business more cheaply are provided more.
The introducing meeting of low power base station causes interference to the communication of existing macro base station, and when low power base station is asynchronous with macro base station, this interference will be especially serious, therefore, needs to solve low power base station and the synchronous problem of macro base station,
In 3GPP R8 (version 8) system, for the radius of society less than 3KM, the required precision of synchronization among base stations is 3us, and for the radius of society greater than 3KM, the required precision of synchronization among base stations is 10us.In 3GPP R9/10 (version 9/10) system, because the application of new technologies and methods, keep seeming even more important synchronously between the base station, in present research, suggestion adopts the scheme of mutual monitoring between the base station to realize synchronously: promptly certain base station can keep synchronous by the monitoring another one CRS of synchronising base station (Cell-specific referencesignals, the exclusive pilot signal in sub-district) signal.Make the problem that to consider interference in this way, Fig. 1 is a hierarchical system base station inter-sync scheme schematic diagram, as shown in the figure: when eNB1 when monitoring the synchronizing signal of eNB0, if eNB2 is when carrying out transfer of data, the synchronizing signal that will influence eNB1 so receives.
Appearance under the circumstances, the said firm also proposes to solve with a kind of mode of mourning in silence: promptly carrying out synchronizing signal when monitoring as eNB1, eNB2 does not transmit data and avoids interference.This scheme may need the mutual coordination between the base station.
In addition, consider the influence of some communication environments, some low power base station (family base station) may not receive the available synchronizing signal from macro base station, and the said firm proposes to utilize the method for synchronous of multi-hop.Fig. 2 is synchronous (Multi-hop synchronization) scheme schematic diagram of multi-hop, and as shown in the figure: HeNB1 is synchronous with macro base station, and HeNB2 can be undertaken by HeNB1 synchronously.Defining SynceNB among the figure (eNB synchronously) is layer 0, and the base station of utilization layer 0 is carried out synchronous base station and is layer 1 (HeNB1), and the base station of utilization layer 1 is carried out synchronous base station and is layer 2 (HeNB2), and the like.
From the angle that interference is avoided, when lower layer was monitored synchronously, the base station of following one deck will stop transmission information to avoid the interference to it.Therefore, can be made into the subframe that each layer needs are mourned in silence the function of the number of plies, synchronizing information is gone to monitor in identical position in the base station of each layer, goes to mourn in silence in same position.Therefore, the base station of each layer need send the information about layer, and at present, whether synchronous the base station will send the number of plies (2 bit) of this base station and information (1 bit).These information can:
Transmission in MIB (Master Information Block, master control block of information);
In SIB-1 (System Information Block-1, system information block 1), transmit.
In the subframe transmission of one deck base station configuration MBSFN (MBSFN Multicast Broadcast Single FrequencyNetwork, multicast/broadcast Single Frequency Network) subframe in order to monitor synchronously down.
Simultaneously, webmaster issues the configuration about the synchronous subframe of each layer.For fear of the influence for the user, these synchronous subframes are to realize by the mode that disposes MBSFN.
The deficiencies in the prior art are: using the scheme of monitoring between the base station to carry out when synchronous, consider in hierarchical network, the activity of base station will be very at random, therefore the base station that occurs monitoring is probably closed or other reason causes monitoring the situation of synchronizing information, therefore, the base station needs certain mechanism and removes to guarantee to lay oneself open to synchronous state.
Summary of the invention
Technical problem solved by the invention has been to provide the synchronization processing method and the base station of base station in a kind of hierarchical network.
The synchronization processing method of base station in a kind of hierarchical network is provided in the embodiment of the invention, has comprised the steps:
The signal strength signal intensity of the exclusive pilot signal CRS in sub-district of current synchronisation source base station is measured in the base station in keeping synchronizing process;
The base station determines to judge that according to described signal strength signal intensity this base station is not in the state of step-out;
If the state that is in step-out is judged in the base station, carry out synchronously after choosing synchronisation source again the base station.
A kind of base station is provided in the embodiment of the invention, has comprised:
Measurement module is used for measuring the signal strength signal intensity of the CRS of current synchronisation source base station in the synchronizing process that keeps the base station;
Judge module is used for determining to judge that according to described signal strength signal intensity this base station is not in the state of step-out;
Synchronization module is used for when judgement is in the state of step-out, chooses again and carries out behind the synchronisation source synchronously.
Beneficial effect of the present invention is as follows:
In the implementation process of a scheme of the present invention, the signal strength signal intensity of the CRS of current synchronisation source base station can be gone to measure in the base station in keeping synchronizing process; And judge according to measured signal strengths whether this base station is in the state of step-out; If when judging the state that is in step-out, then choose again and carry out behind the synchronisation source synchronously.
Therefore, in the technical scheme provided by the invention, because the signal strength signal intensity of the CRS by measure monitoring synchronising base station detects the state that oneself whether is in step-out and guarantees the Synchronous Processing flow process of base station in the whole hierarchical network with it, therefore can find desynchronizing state timely, and remove to guarantee to lay oneself open to synchronous state, for synchronization scenario in the hierarchical network provides necessary replenishing.
Description of drawings
Fig. 1 is a hierarchical system base station inter-sync scheme schematic diagram in the background technology;
Fig. 2 is the synchronization scenario schematic diagram of multi-hop in the background technology;
Fig. 3 is the synchronization processing method implementing procedure schematic diagram of base station in the hierarchical network in the embodiment of the invention;
Fig. 4 handles the implementing procedure schematic diagram for the detection of loss of mains that is applied to hierarchical network in the embodiment of the invention;
Fig. 5 is an architecture of base station schematic diagram in the embodiment of the invention.
Embodiment
The inventor notices in the invention process, the base station needs certain mechanism and removes to guarantee to lay oneself open to synchronous state, therefore find timely that desynchronizing state is exactly the key to the issue that needs solve, in the technical scheme provided by the invention, the signal strength signal intensity of the CRS that the base station will be by measure monitoring synchronising base station detect the state that oneself whether is in step-out and guarantee the Synchronous Processing flow process of base station in the whole hierarchical network with it.Below in conjunction with accompanying drawing the specific embodiment of the present invention is described.
Fig. 3 is the synchronization processing method one implementing procedure schematic diagram of base station in the hierarchical network, and as shown in the figure, the Synchronous Processing process can comprise the steps:
The signal strength signal intensity of the exclusive pilot signal CRS in sub-district of current synchronisation source base station is measured in step 301, base station in keeping synchronizing process;
If the state that is in step-out is judged in step 303 base station, carry out synchronously after choosing synchronisation source again the base station.
In the enforcement, in the step 301, the base station is in keeping synchronizing process, and the base station can keep synchronously according to the corresponding protocol flow process or by the CRS information that detects current synchronisation source base station.Concrete, the base station can keep synchronously according to the corresponding protocol flow process or by the CRS information that detects current synchronisation source base station after finishing initial synchronisation.
In the enforcement, in the step 302, signal strength signal intensity can be to measure SINR (Signal to Interference plus Noise Ratio, signal and interference and the noise ratio) value of current synchronisation source base station CRS.
In above-mentioned implementation process, be that example describes with the low power base station, then low power base station is measured the SINR value of its received signal when the CRS of the current synchronisation source of the detection of step 301 base station.
In the enforcement, in the step 302, the base station is determined to judge that whether this base station is in the state of step-out, can comprise according to described signal strength signal intensity:
High level to this base station when the mean value of the SINR value of the CRS of the current synchronisation source base station that receives when this base station is lower than default thresholding reports the step-out indication.
In the enforcement, when the base station reports the step-out Indication message at the high level to this base station, can trigger the step-out Indication message from physical layer.
Concrete, when in the regular hour section, if the mean value of the SINR of the CRS of measurement synchronization source base station is higher than certain thresholding, the base station is just thought and self is in synchronous state so, proceeds synchronous maintenance; Be lower than certain thresholding if measure the mean value of the SINR of CRS, trigger the indication of an out-of-sync (step-out) so by physical layer to high level.Threshold value can obtain by emulation in the enforcement.High level in the enforcement is meant the relative high level of an inside of base station.Report high-rise rrc layer such as this base station by physical layer.
In the enforcement, can further include:
When the high level of this base station is received a plurality of step-outs indication from physical layer, the opening timing device.
When the timer of this base station is opened, and high-rise continuous receive a plurality of synchronous indications from physical layer, stop timer, the base station is judged this base station and is in synchronous state.
When timer is opened, if timer expiry, the base station judges that this base station is in the state of step-out.
By the way as can be seen, in step 302, after reporting the step-out Indication message to the base station high level, when a plurality of (by the constants of high level definition) indication from the out-of-sync of physical layer is arrived in high-rise continuous monitoring, high level can be opened a timer so, when timer is opened, and when in-sync (synchronously) indicates continuously, UE will stop timer receiving a plurality of (can by the constant of high level definition) from physical layer.Think that physical layer problem recovers this moment, and the RRC before UE will continue to use (RadioResource Control, Radio Resource control) connection does not need to use explicit signaling.If timer expiry so just thinks that Radio Link detects failure, be in the state of step-out, high level will trigger physical layer to carry out again synchronously.
In the enforcement, before the base station of step 301 is keeping synchronizing process, can further include:
Initial synchronisation is carried out according to the existing protocol flow process in the base station;
Or, can utilize the air interface or the interface of support to obtain the synchronisation source relevant information for the synchronisation source of monitoring by mode search, and set up synchronously with the synchronisation source of the optimum that listens to by cell initial search.
Concrete, initial synchronisation can be carried out according to the existing protocol flow process in the base station of new start; Perhaps can supply the synchronisation source of monitoring, and set up synchronously with it by the process search of carrying out similar terminal cell initial search.Whether synchronous new node can obtain the relevant information of synchronisation source by air interface or supported interface (as X2 interface), comprise the layer information of synchronisation source and information.
When obtaining a plurality of synchronisation source, can further include:
When monitoring by eating dishes without rice or wine or obtaining a plurality of synchronisation source by the interface of supporting, the information of preserving a plurality of synchronisation sources is maintained in the synchronisation source set satisfying the synchronisation source base station information that requires synchronously; For example can be maintained in the synchronisation source set by synchronisation source base station information default according to some, that certain rule will satisfy synchronous requirement.
This is because in this stage, the base station of new node or new start may obtain one group can be for behind the synchronous synchronisation source, therefrom select the node of an optimum to carry out synchronously, keep a synchronous set simultaneously, so that when current synchronisation source becomes disabled, can be very fast switch on other synchronisation source, promptly, when obtaining a plurality of synchronisation source by monitoring or by interface, preserve the information of a plurality of synchronisation sources, like this, the base station carries out just can therefrom selecting the node of an optimum to carry out synchronously rapidly when synchronous choosing synchronisation source again.
Concrete, the base station can comprise when choosing synchronisation source again:
Satisfy the base station that requires synchronously if having in the synchronisation source of the keeping set, from the synchronisation source set, choose synchronisation source, and set up with it synchronously according to default rule; For example: choose certain base station in the synchronisation source set as new synchronisation source according to choosing the strongest this default rule of base station of signal strength signal intensity that receives in the synchronisation source set, set up with it synchronously then;
If do not have to satisfy the base station that requires synchronously in the synchronisation source of the keeping set, then search for new synchronisation source again.
In the enforcement, in step 303, when the base station judgement is in the state of step-out, can further include:
The base station stops the up-downgoing transfer of data, chooses synchronisation source again.
Handling like this in the enforcement is for fear of other users are produced interference, and then low power base station can stop the transmission of downlink data and the reception of upstream data, just carries out the selection of new synchronisation source then.
After step 303 was determined to reselect synchronisation source and initiated synchronizing process, when choosing new synchronisation source, the base station in the synchronous set that can preferentially select in the preceding step to be kept was as new synchronisation source.In set synchronously, satisfy synchronous requirement if having some signal of base station, select this synchronisation source to initiate synchronizing process; If do not have signal of base station to meet the demands in the synchronous set of keeping, this low power base station can go to search for again the layer information and the synchronizing information of other base station so, selects suitable synchronisation source to carry out initial synchronisation.That is:
The base station determine step-out and the synchronous set kept in the synchronisation source that do not meet the demands, after reselecting synchronisation source and initiating synchronizing process, can further include:
Initial synchronisation is carried out according to the existing protocol flow process in the base station; Or, can utilize the air interface or the interface of support to obtain the synchronisation source relevant information for the synchronisation source of monitoring by mode search, and set up synchronously with the synchronisation source of the optimum that listens to by cell initial search.
After implementing in a manner described, low power base station just can rebulid the transmission of synchronous laggard line data.
For better explanation enforcement of the present invention, describe with example below.
Fig. 4 is that the detection of loss of mains that is applied to hierarchical network is handled the implementing procedure schematic diagram, as shown in the figure, can comprise the steps:
Initial synchronisation is carried out in step 401, base station.
In this step, initial synchronisation is carried out according to the existing protocol flow process in the base station of new start; Perhaps can supply the synchronisation source of monitoring, and set up synchronously with it by the step search of carrying out similar terminal cell initial search.Whether synchronous new node obtains the relevant information of synchronisation source by air interface or supported interface (as X2 interface), comprise the layer information of synchronisation source and information.In this stage, new node may obtain one group can supply synchronous synchronisation source, need therefrom select the node of an optimum to carry out keeping a synchronous set simultaneously synchronously, so that when current synchronisation source becomes disabled, can be very fast switch on other synchronisation source.
Step 402, base station keep synchronously.
In this step, the base station can keep synchronously according to the corresponding protocol flow process or by the CRS information that detects current synchronisation source base station after finishing initial synchronisation.
The SINR value of the CRS of step 403, the current synchronisation source of base station measurement base station.
In this step, low power base station is measured the SINR value of its received signal when detecting the CRS of current synchronisation source base station.
Step 404, judge whether step-out, be then to change step 405 over to, otherwise change step 402 over to.
In this step, when in the regular hour section, be higher than certain thresholding if measure the mean value of the SINR of CRS, the base station is just thought and self is in synchronous state so, proceeds synchronous maintenance; Be lower than certain thresholding if measure the mean value of the SINR of CRS, trigger the indication of an out-of-sync so to high level by physical layer, when a plurality of (by the constants of high level definition) indication from the out-of-sync of physical layer is arrived in high-rise continuous monitoring, high level will be opened a timer so, when timer is opened, and receive that from a plurality of (by the constants of high level definition) of physical layer UE will stop timer continuously during in-sync indication.Think that physical layer problem recovers this moment, and the RRC connection before UE will continue to use does not need to use explicit signaling.If timer expiry so just thinks that Radio Link detects failure, be in the state of step-out, high level will trigger physical layer to carry out entering step 405 synchronously again;
Step 405, base station stop the transmission of data.
In this step, for fear of the interference for other users, low power base station will stop the transmission of downlink data and the reception of upstream data, carry out the selection of new synchronisation source.
Step 406, judge in the synchronisation source set whether suitable synchronisation source is arranged, be then to change step 407 over to, otherwise change step 401 over to.
In this step, when choosing new synchronisation source, the base station in the preferential synchronous set of selecting to be kept is as new synchronisation source.In set synchronously, satisfy synchronous requirement if having some signal of base station, enter step 407; If in the synchronous set of keeping, do not have signal of base station to meet the demands, enter step 401 so, this low power base station will go to search for again the layer information and the synchronizing information of other base station, select suitable synchronisation source to carry out initial synchronisation.
Step 407, choose new synchronisation source after, execution in step 402.
In this step, low power base station is chosen signal power is the strongest in the synchronous set of keeping base station as new synchronisation source, has rebulid the transmission of synchronous laggard line data.
By above-mentioned enforcement as seen, the mechanism that detects step-out in hierarchical network that provides in the embodiment of the invention is for synchronization scenario in the hierarchical network provides necessary replenishing.
Based on same inventive concept, the base station also is provided in the embodiment of the invention, because the principle of dealing with problems in this base station is similar to the synchronization processing method of base station in the hierarchical network, so the enforcement of this base station can repeat part and repeat no more referring to the enforcement of method.
Fig. 5 is the architecture of base station schematic diagram, as shown in the figure, can comprise in the base station:
Measurement module 501 is used for measuring the signal strength signal intensity of the CRS of current synchronisation source base station in the synchronizing process that keeps the base station;
Judge module 502 is used for determining to judge that according to described signal strength signal intensity this base station is not in the state of step-out;
Synchronization module 503 is used for when judgement is in the state of step-out, chooses again and carries out behind the synchronisation source synchronously.
In the enforcement, synchronization module can also be further used for keeping synchronously according to the corresponding protocol flow process in keeping synchronizing process, or, keep synchronously by the CRS information that detects current synchronisation source base station.
In the enforcement, measurement module can also be further used for measuring the SINR value of the CRS of the current synchronisation source base station that receives.
In the enforcement, when being lower than default thresholding, the mean value of SINR value that judge module can also be further used for the CRS of the current synchronisation source base station that receives when this base station reports the step-out indication to high level.
In the enforcement, judge module can also be further used for when the high level to this base station reports the step-out Indication message, triggers the step-out Indication message from physical layer.
In the enforcement, judge module can also be further used for when the high level of this base station is received a plurality of step-outs indication from physical layer, the opening timing device.
In the enforcement, judge module can also be further used for opening when timer, and high-rise continuous receives a plurality of synchronous indications from physical layer, stops timer, judges that this base station is in synchronous state.
In the enforcement, judge module can also be further used for opening when this timer, if timer expiry is judged the state that is in step-out.
In the enforcement, can further include in the base station:
Initial synchronization module 504 is used for carrying out initial synchronisation according to the existing protocol flow process before keeping synchronizing process; Or, can utilize the air interface or the interface of support to obtain the relevant information of synchronisation source, and set up synchronous for the synchronisation source of monitoring by mode search with the synchronisation source of the optimum that listens to by cell initial search.
In the enforcement, initial synchronization module can also be further used for when obtaining a plurality of synchronisation source by monitoring or by interface, and the information of preserving a plurality of synchronisation sources is maintained in the synchronisation source set satisfying the synchronisation source base station information that requires synchronously; For example the synchronisation source base station information that will satisfy synchronous requirement according to certain rule is maintained in the synchronisation source set.
In the enforcement, synchronization module can also be further used for when choosing synchronisation source again, if have in the synchronisation source of the keeping set and satisfy the base station that requires synchronously, then from the synchronisation source set, choose synchronisation source according to default rule, (for example choosing the strongest base station of the signal strength signal intensity that receives in the synchronisation source set) as new synchronisation source, and set up with it synchronously; If do not have to satisfy the base station that requires synchronously in the synchronisation source of the keeping set, then search for new synchronisation source again.
In the enforcement, when synchronization module can also be further used for not having to satisfy the synchronisation source that requires synchronously in determining to reselect synchronisation source and gathering synchronously, initiate again to carry out initial synchronisation according to the existing protocol flow process in the synchronizing process; Or, can utilize the air interface or the interface of support to obtain the synchronisation source relevant information for the synchronisation source of monitoring by mode search, and set up synchronously with the synchronisation source of the optimum that obtains by cell initial search.
In the enforcement, can further include in the base station:
Transport module 505 is used for stopping the transmission of downlink data and/or the reception of upstream data before determining that reselecting synchronisation source initiates synchronizing process.
For the convenience of describing, the each several part of the above device is divided into various modules with function or the unit is described respectively.Certainly, when enforcement is of the present invention, can in same or a plurality of softwares or hardware, realize the function of each module or unit.
In the invention process, the base station judges oneself whether to be in the state of step-out and to utilize this signal strength signal intensity to control the flow process of whole detection of loss of mains by the signal strength signal intensity of measuring the CRS that monitors synchronising base station.
Concrete, in the implementation process of a scheme of the present invention, the signal strength signal intensity of the CRS of current synchronisation source base station can be gone to measure in the base station in keeping synchronizing process; And determine whether to report the step-out Indication message to high-level base station according to measured signal strengths; Indication according to high-level base station at last determines whether to reselect synchronisation source initiation synchronizing process.
Further, the base station high level after receiving the step-out Indication message that reports, when the step-out Indication message quantity that reports surpasses default thresholding, the opening timing device; Behind the opening timing device, if also do not receive a plurality of (high-rise predefined quantity is arranged) that report synchronous Indication message when timer expiry, then indication is reselected synchronisation source and is initiated synchronizing process.
Therefore, in the technical scheme provided by the invention, because the signal strength signal intensity of the CRS by measure monitoring synchronising base station detects the state that oneself whether is in step-out and guarantees the Synchronous Processing flow process of base station in the whole hierarchical network with it, therefore can find desynchronizing state timely, and remove to guarantee to lay oneself open to synchronous state, for synchronization scenario in the hierarchical network provides necessary replenishing.
Those skilled in the art should understand that embodiments of the invention can be provided as method, system or computer program.Therefore, the present invention can adopt complete hardware embodiment, complete software implementation example or in conjunction with the form of the embodiment of software and hardware aspect.And the present invention can adopt the form that goes up the computer program of implementing in one or more computer-usable storage medium (including but not limited to magnetic disc store, CD-ROM, optical memory etc.) that wherein include computer usable program code.
The present invention is that reference is described according to the flow chart and/or the block diagram of method, equipment (system) and the computer program of the embodiment of the invention.Should understand can be by the flow process in each flow process in computer program instructions realization flow figure and/or the block diagram and/or square frame and flow chart and/or the block diagram and/or the combination of square frame.Can provide these computer program instructions to the processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing device to produce a machine, make the instruction of carrying out by the processor of computer or other programmable data processing device produce to be used for the device of the function that is implemented in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame appointments.
These computer program instructions also can be stored in energy vectoring computer or the computer-readable memory of other programmable data processing device with ad hoc fashion work, make the instruction that is stored in this computer-readable memory produce the manufacture that comprises command device, this command device is implemented in the function of appointment in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame.
These computer program instructions also can be loaded on computer or other programmable data processing device, make on computer or other programmable devices and to carry out the sequence of operations step producing computer implemented processing, thereby the instruction of carrying out on computer or other programmable devices is provided for being implemented in the step of the function of appointment in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame.
Although described the preferred embodiments of the present invention, in a single day those skilled in the art get the basic creative notion of cicada, then can make other change and modification to these embodiment.So claims are intended to all changes and the modification that are interpreted as comprising preferred embodiment and fall into the scope of the invention.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (26)
1. the synchronization processing method of base station in the hierarchical network is characterized in that, comprises the steps:
The signal strength signal intensity of the exclusive pilot signal CRS in sub-district of current synchronisation source base station is measured in the base station in keeping synchronizing process;
The base station is determined to judge whether this base station is in the state of step-out according to described signal strength signal intensity;
If the state that is in step-out is judged in the base station, carry out synchronously after choosing synchronisation source again the base station.
2. the method for claim 1 is characterized in that, the base station is in keeping synchronizing process, and the base station keeps synchronously according to the corresponding protocol flow process, or, keep synchronously by the CRS information that detects current synchronisation source base station.
3. the method for claim 1 is characterized in that, described signal strength signal intensity is signal and interference and the noise ratio SINR value of the CRS of the current synchronisation source base station that receives, base station.
4. method as claimed in claim 3 is characterized in that, the base station determines to judge that according to described signal strength signal intensity this base station is not in the state of step-out, comprising:
High level to this base station when the mean value of the SINR value of the CRS of the current synchronisation source base station that receives when this base station is lower than default thresholding reports the step-out indication.
5. method as claimed in claim 4 is characterized in that, when the base station reports the step-out Indication message at the high level to this base station, triggers the step-out Indication message from physical layer.
6. method as claimed in claim 5 is characterized in that, further comprises:
When the high level of this base station is received a plurality of step-outs indication from physical layer, the opening timing device.
7. method as claimed in claim 6 is characterized in that, further comprises:
When the timer of this base station is opened, and high-rise continuous receive a plurality of synchronous indications from physical layer, stop timer, the base station judges that this base station is in synchronous state.
8. method as claimed in claim 6 is characterized in that, opens when the timer of this base station, if timer expiry, the base station judges that this base station is in the state of step-out.
9. as the arbitrary described method of claim 1 to 8, it is characterized in that, further comprise:
When the base station judgement was in the state of step-out, the base station stopped the up-downgoing transfer of data, chooses synchronisation source again.
10. as the arbitrary described method of claim 1 to 8, it is characterized in that the base station further comprises before keeping synchronizing process:
Initial synchronisation is carried out according to the existing protocol flow process in the base station;
Or, can utilize the air interface or the interface of support to obtain the synchronisation source relevant information for the synchronisation source of monitoring by mode search, and set up synchronously with the synchronisation source of the optimum that listens to by cell initial search.
11. want 10 described methods as right, it is characterized in that, further comprise:
When monitoring by eating dishes without rice or wine or obtaining a plurality of synchronisation source by the interface of supporting, the information of preserving a plurality of synchronisation sources is maintained in the synchronisation source set satisfying the synchronisation source base station information that requires synchronously.
12. method as claimed in claim 9 is characterized in that, the base station comprises when choosing synchronisation source again:
Satisfy the base station that requires synchronously if having in the synchronisation source of the keeping set, then from the synchronisation source set, choose synchronisation source, and set up with it synchronously according to default rule;
If do not have to satisfy the base station that requires synchronously in the synchronisation source of the keeping set, then search for new synchronisation source again.
13., it is characterized in that as the arbitrary described method of claim 1 to 8, when the base station does not have to satisfy the synchronisation source that requires synchronously, initiate synchronizing process again in determining to reselect synchronisation source and gathering synchronously, further comprise:
Initial synchronisation is carried out according to the existing protocol flow process in the base station;
Or, can utilize the air interface or the interface of support to obtain the synchronisation source relevant information for the synchronisation source of monitoring by mode search, and set up synchronously with the synchronisation source of the optimum that listens to by cell initial search.
14. a base station is characterized in that, comprising:
Measurement module is used for measuring the signal strength signal intensity of the CRS of current synchronisation source base station in the synchronizing process that keeps the base station;
Judge module is used for determining to judge that according to described signal strength signal intensity this base station is not in the state of step-out;
Synchronization module is used for when judgement is in the state of step-out, chooses again and carries out behind the synchronisation source synchronously.
15. base station as claimed in claim 14 is characterized in that, synchronization module is further used for keeping synchronously according to the corresponding protocol flow process in keeping synchronizing process, or, keep synchronously by the CRS information that detects current synchronisation source base station.
16. base station as claimed in claim 14 is characterized in that, measurement module is further used for measuring the SINR value of the CRS of the current synchronisation source base station that receives.
17. base station as claimed in claim 16 is characterized in that, reports the step-out indication to high level when the mean value of SINR value that judge module is further used for the CRS of the current synchronisation source base station that receives when this base station is lower than default thresholding.
18. base station as claimed in claim 17 is characterized in that, judge module is further used for when the high level to this base station reports the step-out Indication message, triggers the step-out Indication message from physical layer.
19. base station as claimed in claim 18 is characterized in that, judge module is further used for when the high level of this base station is received a plurality of step-outs indication from physical layer, the opening timing device.
20. base station as claimed in claim 18 is characterized in that, judge module is further used for opening when timer, and high-rise continuous receives a plurality of synchronous indications from physical layer, stops timer, judges that this base station is in synchronous state.
21. base station as claimed in claim 18 is characterized in that, judge module is further used for opening when this timer, if timer expiry is judged the state that is in step-out.
22. as the arbitrary described base station of claim 14 to 21, it is characterized in that, further comprise:
Transport module is used for stopping the transmission of downlink data and/or the reception of upstream data before determining that reselecting synchronisation source initiates synchronizing process.
23. as the arbitrary described base station of claim 14 to 21, it is characterized in that, further comprise:
Initial synchronization module is used for carrying out initial synchronisation according to the existing protocol flow process before keeping synchronizing process; Or, can utilize the air interface or the interface of support to obtain the synchronisation source relevant information for the synchronisation source of monitoring by mode search, and set up synchronously with the synchronisation source of the optimum that listens to by cell initial search.
24. base station as claimed in claim 23, it is characterized in that, initial synchronization module is further used for when monitoring by eating dishes without rice or wine or obtaining a plurality of synchronisation source by the interface of supporting, the information of preserving a plurality of synchronisation sources is maintained in the synchronisation source set satisfying the synchronisation source base station information that requires synchronously.
25. base station as claimed in claim 24, it is characterized in that synchronization module is further used for when choosing synchronisation source again, satisfy the base station that requires synchronously if having in the synchronisation source of the keeping set, then from the synchronisation source set, choose synchronisation source, and set up with it synchronously according to default rule; If do not have to satisfy the base station that requires synchronously in the synchronisation source of the keeping set, then search for new synchronisation source again.
26. as the arbitrary described base station of claim 14 to 21, it is characterized in that, when synchronization module is further used for not having to satisfy the synchronisation source that requires synchronously in determining to reselect synchronisation source and gathering synchronously, initiate again to carry out initial synchronisation according to the existing protocol flow process in the synchronizing process; Or, can utilize the air interface or the interface of support to obtain the synchronisation source relevant information for the synchronisation source of monitoring by mode search, and set up synchronously with the synchronisation source of the optimum that listens to by cell initial search.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102435026A CN102014405A (en) | 2009-12-24 | 2009-12-24 | Base station and synchronous processing method thereof in layered network |
| PCT/CN2010/079502 WO2011076062A1 (en) | 2009-12-24 | 2010-12-07 | Base station and synchronization processing method of base station in hierarchical network |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102435026A CN102014405A (en) | 2009-12-24 | 2009-12-24 | Base station and synchronous processing method thereof in layered network |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102014405A true CN102014405A (en) | 2011-04-13 |
Family
ID=43844372
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009102435026A Pending CN102014405A (en) | 2009-12-24 | 2009-12-24 | Base station and synchronous processing method thereof in layered network |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN102014405A (en) |
| WO (1) | WO2011076062A1 (en) |
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102149185A (en) * | 2010-02-08 | 2011-08-10 | 电信科学技术研究院 | Method and device for maintaining synchronous set |
| CN103167599A (en) * | 2013-03-04 | 2013-06-19 | 京信通信系统（中国）有限公司 | Method and device for information synchronization |
| CN103517397A (en) * | 2012-06-15 | 2014-01-15 | 中兴通讯股份有限公司 | Periodic empty synchronization method and base station |
| CN103813436A (en) * | 2012-11-05 | 2014-05-21 | 京信通信系统（中国）有限公司 | Method for synchronizing household base station air interface, apparatus, and household base station |
| CN103826247A (en) * | 2012-11-16 | 2014-05-28 | 普天信息技术研究院有限公司 | Method for monitoring wireless link in heterogeneous network |
| CN104066166A (en) * | 2013-03-21 | 2014-09-24 | 华为技术有限公司 | Timing synchronization method and small base station |
| WO2014176781A1 (en) * | 2013-05-03 | 2014-11-06 | Blackberry Limited | Transmitting a synchronization indication |
| CN104684069A (en) * | 2013-11-29 | 2015-06-03 | 中兴通讯股份有限公司 | Configuration method, node and system for realizing air interface synchronization |
| CN104812050A (en) * | 2014-01-24 | 2015-07-29 | 中兴通讯股份有限公司 | Method, cell and system for realizing air interface synchronization |
| WO2015109895A1 (en) * | 2014-01-24 | 2015-07-30 | 中兴通讯股份有限公司 | Method, device, system, and computer storage medium for implementing air interface synchronization |
| CN104955114A (en) * | 2014-03-24 | 2015-09-30 | 京信通信系统（中国）有限公司 | Method and device for reducing call drop rate of user |
| WO2016019515A1 (en) * | 2014-08-05 | 2016-02-11 | Nokia Solutions And Networks Oy | Controlling synchronization procedure of communication network control elements |
| CN105657812A (en) * | 2014-11-14 | 2016-06-08 | 联想(北京)有限公司 | Information processing method and terminal |
| CN105813216A (en) * | 2012-08-29 | 2016-07-27 | 华为技术有限公司 | Base station scheduling method and device |
| CN106170134A (en) * | 2016-08-15 | 2016-11-30 | 南京熊猫电子股份有限公司 | Arrange net multi-hop of eating dishes without rice or wine of a kind of LTE smallcell indoor synchronizes self-configuring self-organization method |
| CN106304162A (en) * | 2016-08-04 | 2017-01-04 | 福建三元达网络技术有限公司 | The method and system of seamless switching synchronisation source |
| CN109275183A (en) * | 2017-07-17 | 2019-01-25 | 大唐移动通信设备有限公司 | A kind of base station synchronization method and device of identical networking |
| WO2019137293A1 (en) * | 2018-01-09 | 2019-07-18 | 大唐移动通信设备有限公司 | Method and device for synchronization between base stations |
| CN114126033A (en) * | 2021-11-16 | 2022-03-01 | 中信科移动通信技术股份有限公司 | Air interface synchronization method and system for indoor branch base station |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109891762A (en) * | 2016-11-04 | 2019-06-14 | 瑞典爱立信有限公司 | Method and apparatus for handling wave beam failure |
| CN108632842B (en) | 2017-03-17 | 2020-06-16 | 华为技术有限公司 | Out-of-step determining method and device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1466394A (en) * | 2002-06-10 | 2004-01-07 | 华为技术有限公司 | Method for realizing synchronization between base stations in mobile communication system |
| CN101123465A (en) * | 2006-08-09 | 2008-02-13 | 上海贝尔阿尔卡特股份有限公司 | Method and device for synchronization of network devices in wireless communication system |
| WO2009022668A1 (en) * | 2007-08-14 | 2009-02-19 | Ntt Docomo, Inc. | User device, base station device and transmission control method |
-
2009
- 2009-12-24 CN CN2009102435026A patent/CN102014405A/en active Pending
-
2010
- 2010-12-07 WO PCT/CN2010/079502 patent/WO2011076062A1/en active Application Filing
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1466394A (en) * | 2002-06-10 | 2004-01-07 | 华为技术有限公司 | Method for realizing synchronization between base stations in mobile communication system |
| CN101123465A (en) * | 2006-08-09 | 2008-02-13 | 上海贝尔阿尔卡特股份有限公司 | Method and device for synchronization of network devices in wireless communication system |
| WO2009022668A1 (en) * | 2007-08-14 | 2009-02-19 | Ntt Docomo, Inc. | User device, base station device and transmission control method |
Cited By (32)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102149185B (en) * | 2010-02-08 | 2013-08-14 | 电信科学技术研究院 | Method and device for maintaining synchronous set |
| CN102149185A (en) * | 2010-02-08 | 2011-08-10 | 电信科学技术研究院 | Method and device for maintaining synchronous set |
| CN103517397A (en) * | 2012-06-15 | 2014-01-15 | 中兴通讯股份有限公司 | Periodic empty synchronization method and base station |
| CN103517397B (en) * | 2012-06-15 | 2018-01-30 | 中兴通讯股份有限公司 | A kind of method of periodic empty synchronization and base station |
| CN105813216B (en) * | 2012-08-29 | 2020-02-21 | 华为技术有限公司 | Base station scheduling method and device |
| CN105813216A (en) * | 2012-08-29 | 2016-07-27 | 华为技术有限公司 | Base station scheduling method and device |
| CN103813436A (en) * | 2012-11-05 | 2014-05-21 | 京信通信系统（中国）有限公司 | Method for synchronizing household base station air interface, apparatus, and household base station |
| CN103826247A (en) * | 2012-11-16 | 2014-05-28 | 普天信息技术研究院有限公司 | Method for monitoring wireless link in heterogeneous network |
| CN103826247B (en) * | 2012-11-16 | 2017-06-16 | 普天信息技术研究院有限公司 | A kind of method being monitored to Radio Link in heterogeneous network |
| CN103167599B (en) * | 2013-03-04 | 2016-12-07 | 京信通信系统（中国）有限公司 | A kind of method and apparatus of synchronizing information |
| CN103167599A (en) * | 2013-03-04 | 2013-06-19 | 京信通信系统（中国）有限公司 | Method and device for information synchronization |
| CN104066166A (en) * | 2013-03-21 | 2014-09-24 | 华为技术有限公司 | Timing synchronization method and small base station |
| CN104066166B (en) * | 2013-03-21 | 2018-03-09 | 华为技术有限公司 | A kind of time synchronization method and small base station |
| WO2014176781A1 (en) * | 2013-05-03 | 2014-11-06 | Blackberry Limited | Transmitting a synchronization indication |
| US9408167B2 (en) | 2013-05-03 | 2016-08-02 | Blackberry Limited | Transmitting a synchronization indication |
| CN104684069A (en) * | 2013-11-29 | 2015-06-03 | 中兴通讯股份有限公司 | Configuration method, node and system for realizing air interface synchronization |
| CN104812050B (en) * | 2014-01-24 | 2019-11-15 | 中兴通讯股份有限公司 | A kind of method that realizing air interface synchronization, cell and system |
| US10791528B2 (en) | 2014-01-24 | 2020-09-29 | Zte Corporation | Method, cell and system for implementing air interface synchronization |
| CN104812050A (en) * | 2014-01-24 | 2015-07-29 | 中兴通讯股份有限公司 | Method, cell and system for realizing air interface synchronization |
| WO2015109895A1 (en) * | 2014-01-24 | 2015-07-30 | 中兴通讯股份有限公司 | Method, device, system, and computer storage medium for implementing air interface synchronization |
| CN104955114A (en) * | 2014-03-24 | 2015-09-30 | 京信通信系统（中国）有限公司 | Method and device for reducing call drop rate of user |
| WO2016019515A1 (en) * | 2014-08-05 | 2016-02-11 | Nokia Solutions And Networks Oy | Controlling synchronization procedure of communication network control elements |
| CN105657812B (en) * | 2014-11-14 | 2019-12-24 | 联想(北京)有限公司 | Information processing method and terminal |
| CN105657812A (en) * | 2014-11-14 | 2016-06-08 | 联想(北京)有限公司 | Information processing method and terminal |
| CN106304162A (en) * | 2016-08-04 | 2017-01-04 | 福建三元达网络技术有限公司 | The method and system of seamless switching synchronisation source |
| CN106170134A (en) * | 2016-08-15 | 2016-11-30 | 南京熊猫电子股份有限公司 | Arrange net multi-hop of eating dishes without rice or wine of a kind of LTE smallcell indoor synchronizes self-configuring self-organization method |
| CN109275183A (en) * | 2017-07-17 | 2019-01-25 | 大唐移动通信设备有限公司 | A kind of base station synchronization method and device of identical networking |
| CN109275183B (en) * | 2017-07-17 | 2020-04-21 | 大唐移动通信设备有限公司 | Base station synchronization method and device for same-frequency networking |
| WO2019137293A1 (en) * | 2018-01-09 | 2019-07-18 | 大唐移动通信设备有限公司 | Method and device for synchronization between base stations |
| US11051265B2 (en) | 2018-01-09 | 2021-06-29 | Datang Mobile Communications Equipment Co., Ltd. | Method and device for synchronization between base stations |
| CN114126033A (en) * | 2021-11-16 | 2022-03-01 | 中信科移动通信技术股份有限公司 | Air interface synchronization method and system for indoor branch base station |
| CN114126033B (en) * | 2021-11-16 | 2023-07-11 | 中信科移动通信技术股份有限公司 | Air interface synchronization method and system for indoor division base station |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2011076062A1 (en) | 2011-06-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102014405A (en) | Base station and synchronous processing method thereof in layered network | |
| CN105530690B (en) | The method and apparatus used in the wireless communication system using multi-mode base station | |
| CN110493819B (en) | Cell measurement method and user terminal | |
| CN102076095B (en) | Frequency point selection method as well as household base stations and equipment | |
| CN104812054B (en) | A kind of delay inequality determines method, system, base station and user equipment | |
| CN103024680B (en) | Semi-persistent scheduling Activiation method and the trunked communication system based on semi-persistent scheduling | |
| WO2012072038A1 (en) | Method, system, and device for confirming uplink-downlink configuration | |
| CN102026363B (en) | Base station internal synchronization method of hierarchical system and base station | |
| CN101828342A (en) | Communication terminal, communication system and realization method for dmr special network | |
| CN102223690A (en) | Methods for transmitting system information and devices | |
| CN103391571A (en) | Pilot frequency neighboring cell measuring method and user device | |
| WO2013026319A1 (en) | Cell measurement method, information processing method, terminal, base station and network system | |
| CN102045850A (en) | Configuration method and equipment of almost blank subframe | |
| CN101841904A (en) | Null interface synchronization method and system of home node base station | |
| CN102136863A (en) | Method and device for realizing almost blank subframe processing and synchronization between base stations | |
| CN104811962A (en) | Small cell state switching method and small cell state switching device | |
| JP2016529803A (en) | Cell discovery and measurement method, base station, and user equipment | |
| CN104301960A (en) | Community switching method, system and base station | |
| WO2016082779A1 (en) | Network interception-based air interface synchronization method and device | |
| CN102137430A (en) | Method and device for reporting multimedia broadcast multicast service (MBMS) status | |
| JP6587260B2 (en) | Method and system for air interface synchronization | |
| WO2011137834A1 (en) | Method and apparatus for controlling user equipments | |
| WO2016183816A1 (en) | Communication method and device | |
| CN104995944A (en) | Method and apparatus for supporting user equipment to execute task | |
| CN102149185B (en) | Method and device for maintaining synchronous set |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| ASS | Succession or assignment of patent right |
Owner name: INST OF TELECOMMUNICATION SCIENCE AND TECHNOLGOY Free format text: FORMER OWNER: DATANG MOBILE COMMUNICATION EQUIPMENT CO., LTD. Effective date: 20110426 |
|
| C10 | Entry into substantive examination | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 100083 NO. 29, XUEYUAN ROAD, HAIDIAN DISTRICT, BEIJING TO: 100191 NO. 40, XUEYUAN ROAD, HAIDIAN DISTRICT, BEIJING |
|
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20110426 Address after: 100191 Haidian District, Xueyuan Road, No. 40, Applicant after: Inst of Telecommunication Science and Technolgoy Address before: 100083 Haidian District, Xueyuan Road, No. 29, Applicant before: Datang Mobile Communication Equipment Co., Ltd. |
|
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20110413 |