CN104411011B - Femto cell, clock server time service, synchronous method and system - Google Patents
Femto cell, clock server time service, synchronous method and system Download PDFInfo
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- CN104411011B CN104411011B CN201410707721.6A CN201410707721A CN104411011B CN 104411011 B CN104411011 B CN 104411011B CN 201410707721 A CN201410707721 A CN 201410707721A CN 104411011 B CN104411011 B CN 104411011B
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W56/00—Synchronisation arrangements
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Abstract
A kind of femto cell, clock server time service, synchronous method and system, wherein synchronous method, including:Time service synchronization request and base station identification code are sent to clock server by femto cell;Time service synchronization request and base station identification code are received using clock server, detect the time service synchronization request quantity received in current slot, when the time service synchronization request quantity of reception is less than or equal to preset value, being sent to the corresponding femto cell of base station identification code allows link order;When the time service synchronization request quantity of reception is more than preset value, forbid link order to the corresponding femto cell transmission of base station identification code;It is received by femto cell when allowing link order, sends unitcast request to clock server, receive when forbidding link order, be spaced after the first preset time and send time service synchronization request and base station identification code to clock server;Unitcast request is received using clock server, time service operation is carried out to the femto cell.The present invention reduces network risks and cost.
Description
Technical field
The present invention relates to mobile communication technology field, more particularly to a kind of femto cell, clock server time service, synchronization
Method and system.
Background technology
The method of synchronization of the femto cell (Femto) used at present and clock server (IPCLK), can be by standard 1588
Agreement carries out communication and clock time service, i.e., is communicated by the specification message of 1588 agreements.During femto cell practical application,
When user's booting femto cell, after selecting 1588 clock synchronization modes, femto cell sends time service synchronization to clock server please
It asks, clock server receives the request of femto cell, and femto cell can quickly connect clock server and synchronize.
Clock server needs certain network bandwidth, femto cell is more, and clock server needs to femto cell time service
The bandwidth wanted is bigger.With the development of science and technology, the online usage amount of femto cell can be increasing.In order to which clock server can be with
Meet the time service needs of more femto cell, using the method for synchronization of traditional femto cell and clock server, clock can be taken
The excessive bandwidth of device occupancy of being engaged in, so as to cause the technical risk and cost risk of network.
Invention content
Based on this, it is necessary to excessive bandwidth is occupied for due to clock server, so as to cause the technical risk of network
With cost risk problem, a kind of femto cell, clock server time service, synchronous method and system are provided.
Method from a kind of clock server to femto cell time service, including:
Obtain time service synchronization request and the base station identification code that femto cell is sent;
Detect the time service synchronization request quantity received in current slot, be less than when the time service synchronization request quantity of reception or
During equal to preset value, being sent to the corresponding femto cell of the base station identification code allows link order, receives femto cell and returns
Unitcast request, to the femto cell carry out time service operation;When the time service synchronization request quantity of reception is more than preset value, to
Link order is forbidden in the corresponding femto cell transmission of the base station identification code.
Method from above-mentioned clock server to femto cell time service, by receive femto cell send time service synchronize
When request and base station identification code, the time service synchronization request quantity of reception in detection current slot is asked when the time service of reception synchronizes
When seeking quantity less than or equal to preset value, being sent to the corresponding femto cell of the base station identification code allows link order, receives
The unitcast request that femto cell returns carries out time service operation to the femto cell;When the time service synchronization request quantity of reception is big
When preset value, forbid link order to the corresponding femto cell transmission of the base station identification code.So as to fulfill in the same time
Section, only allows a certain number of femto cell incoming clock servers to carry out time service synchronization, and other femto cell do not allow then
Access, ensure that the demand of base station synchronization, and under synchronization, bandwidth shared by clock server keep in a certain range, from
And reduce the technical risk and cost risk of network.
A kind of method of femto cell synchronous clock server, including:
The time service synchronization request and base station identification code of this femto cell are sent to clock server;
Receive the time service link order corresponding with the base station identification code of this femto cell that the clock server returns;Its
In, the time service link order includes allowing link order and forbids link order, if the clock service in current slot
When the time service synchronization request quantity that device receives is less than or equal to preset value, returning allows link order;If institute in current slot
When stating the time service synchronization request quantity of clock server reception more than preset value, link order is forbidden in return;
When time service link order is allows link order, unitcast request, synchronised clock service are sent to clock server
Device;When time service link order is sends time service synchronization request after when forbidding link order, being spaced preset time to clock server
And base station identification code.
The method of above-mentioned femto cell synchronous clock server from the angle of femto cell, is sent to clock server
The time service synchronization request and base station identification code of this femto cell;Receive the base with this femto cell that the clock server returns
The corresponding time service link order of station identifications code;When time service link order is allows link order, sent to clock server single
Broadcast request, synchronous clock server;When time service link order is to forbid link order, to clock service after the preset time of interval
Device sends time service synchronization request and base station identification code.So as to fulfill femto cell before unitcast request is sent, it is necessary to when first sending
Clock service request when receiving permission link order, just sends unitcast request to clock server.And then it realizes in the same time
Section, only allows a certain number of femto cell incoming clock servers to carry out time service synchronization, and other femto cell do not allow then
Access, ensure that the demand of base station synchronization, and under synchronization, bandwidth shared by clock server is kept in a certain range, drop
The low technical risk and cost risk of network.
A kind of synchronous method of femto cell and clock server, including:
Time service synchronization request and base station identification code are sent to clock server by femto cell;
The time service synchronization request and base station identification code are received using clock server, is received in detection current slot
Time service synchronization request quantity, when the time service synchronization request quantity of reception is less than or equal to preset value, to the base station identification code
Corresponding femto cell, which is sent, allows link order;When the time service synchronization request quantity of reception is more than preset value, to the base
Link order is forbidden in the corresponding femto cell transmission of station identifications code;
When receiving permission link order by femto cell, unitcast request is sent to clock server, receives and forbids
During link order, it is spaced after preset time and sends time service synchronization request and base station identification code to clock server;
Clock server receives unitcast request, and time service operation is carried out to the femto cell.
The synchronization system of a kind of femto cell and clock server, including clock server, set on the synchronization of femto cell
Device:
Synchronizing device sends time service synchronization request and base station identification code to clock server;
Clock server receives the time service synchronization request and base station identification code, the time service received in detection current slot
Synchronization request quantity when the time service synchronization request quantity of reception is less than or equal to preset value, is corresponded to the base station identification code
Synchronizing device send allow link order;When the time service synchronization request quantity of reception is more than preset value, marked to the base station
Know the corresponding synchronizing device transmission of code and forbid link order;
Synchronizing device is received when allowing link order, is sent unitcast request to clock server, is received and forbid connecting
During instruction, it is spaced after preset time and sends time service synchronization request and base station identification code to clock server;
Clock server receives unitcast request, and time service operation is carried out to the femto cell.
The synchronous method and system of above-mentioned femto cell and clock server are sent by femto cell to clock server
Time service synchronization request and base station identification code, clock server carry out judging time service synchronization request quantity, when the time service of reception synchronizes
When number of requests is less than or equal to preset value, being sent to the corresponding femto cell of the base station identification code allows link order;When
When the time service synchronization request quantity of reception is more than preset value, forbid connecting to the corresponding femto cell transmission of the base station identification code
Instruction, femto cell just send unitcast request, realization and clock only when receiving permission link order to clock server
The synchronization of server.It receives when forbidding link order, needs that time service could be sent to clock server after being spaced preset time
Synchronization request and base station identification code re-start request, so as to fulfill in the same period, only allow a certain number of miniature bases
Incoming clock server of standing carries out time service synchronization, and other femto cell do not allow then to access, and ensure that the demand of base station synchronization,
And under synchronization, bandwidth shared by clock server is kept in a certain range, technical risk so as to reduce network and into
This risk.
Description of the drawings
Fig. 1 is flow diagram of the clock server of the present invention to the embodiment of the method for femto cell time service;
Fig. 2 is the flow diagram of the embodiment of the method for femto cell synchronous clock server of the present invention;
Fig. 3 is the flow diagram of the synchronous method embodiment of femto cell of the present invention and clock server;
Fig. 4 is the structure diagram of the synchronization system embodiment of femto cell of the present invention and clock server.
Specific embodiment
The present invention is described in further detail with reference to embodiment and attached drawing, but embodiments of the present invention are not limited to
This.
As shown in Figure 1, be clock server of the present invention to the flow diagram of the embodiment of the method for femto cell time service, packet
It includes:
Step S101:Obtain time service synchronization request and the base station identification code that femto cell is sent;
Base station identification code is a kind of code for identifying femto cell, and each femto cell has unique base station identification code.Time service
Synchronization request is to authorize the request for carrying out time service synchronization, that is, authorizes the power that femto cell sends unitcast request to clock server
Profit.When femto cell needs to access clock server, time service synchronization request and base station identification code are first sent.
Step S102:The time service synchronization request quantity received in current slot is detected, judges that the time service received synchronization please
Ask whether quantity is less than or equal to preset value, if so, S103 is entered step, if it is not, entering step S104;
Current slot can be that multiple periods are divided into one day, can also be according to working day and festivals or holidays not
Together, the different periods is divided.For example, within the time, divided as unit of per hour, limiting cannot in one hour
Time service synchronization is carried out more than 500 stylobate stations.The purpose of this step was ensured in the same period, was only allowed a certain number of miniature
Base station incoming clock server carries out time service synchronization.The determination step can perform in clock server.
Step S103:Being sent to the corresponding femto cell of the base station identification code allows link order, and enter step
S105;
Step S104:Forbid link order to the corresponding femto cell transmission of the base station identification code;
Step S105:The unitcast request that femto cell returns is received, time service operation is carried out to the femto cell.
When femto cell, which receives, allows link order, unitcast request is returned to, when femto cell, which receives, forbids instruction, no
Return to unitcast request.The step of receiving the unitcast request that femto cell returns, time service operation is carried out to the femto cell can be with
It is realized based on clock server.
The present embodiment is from the angle at clock service end, by the time service synchronization request for receiving femto cell and sending
During with base station identification code, the time service synchronization request quantity of reception in detection current slot, when the time service synchronization request number of reception
When amount is less than or equal to preset value, being sent to the corresponding femto cell of the base station identification code allows link order, receives miniature
The unitcast request that base station returns carries out time service operation to the femto cell;When the time service synchronization request quantity of reception is more than in advance
If during value, forbid link order to the corresponding femto cell transmission of the base station identification code.So as to fulfill in the same period, only
A certain number of femto cell incoming clock servers is allowed to carry out time service synchronization, other femto cell do not allow then to access,
It ensure that the demand of base station synchronization, and under synchronization, bandwidth shared by clock server is kept in a certain range, so as to reduce
The technical risk and cost risk of network.
Can also preset value be determined using the following formula in one of the embodiments,;
Wherein, N represents preset value, and M represents the bandwidth of clock server, and n represents that clock server is per second miniature to every
The number for the timestamp network packet that base station is sent, L1 represent the shortest word section number of an Ethernet packet, and L2 represents timestamp net
The byte number of inter-packet gap between network packet.
In this way, it can determine that each period can receive under the premise of clock server bandwidth is known
Time service synchronization request quantity, so as to reduce the technical risk of network and cost risk.
As shown in Fig. 2, the flow diagram of the embodiment of the method for femto cell synchronous clock server of the present invention, packet
It includes:
Step S201:The time service synchronization request and base station identification code of this femto cell are sent to clock server;
Base station identification code is a kind of code for identifying femto cell, and each femto cell has unique base station identification code.Time service
Synchronization request is to authorize the request for carrying out time service synchronization, that is, authorizes the power that femto cell sends unitcast request to clock server
Profit.When femto cell needs to access clock server, time service synchronization request and base station identification code are first sent.
Step S202:The time service corresponding with the base station identification code of this femto cell that the clock server returns is received to connect
Connect instruction;Wherein, the time service link order includes allowing link order and forbids link order, if described in current slot
When the time service synchronization request quantity that clock server receives is less than or equal to preset value, returning allows link order;If when current
Between the clock server receives in section time service synchronization request quantity when being more than preset value, link order is forbidden in return;
Step S203:When time service link order is allows link order, unitcast request is sent to clock server, it is synchronous
Clock server;When time service link order is sends time service after when forbidding link order, being spaced preset time to clock server
Synchronization request and base station identification code.
The present embodiment from the angle of femto cell, to clock server send this femto cell time service synchronization request and
Base station identification code;Time service corresponding with the base station identification code of this femto cell connection that the clock server returns is received to refer to
It enables;When time service link order is allows link order, unitcast request, synchronous clock server are sent to clock server;When
Time service link order sends time service synchronization request and base station after preset time when forbidding link order, to be spaced to clock server
Identification code.So as to fulfill femto cell before unitcast request is sent, it is necessary to which first tranmitting data register service request allows to connect receiving
During instruction, just unitcast request is sent to clock server.And then realize in the same period, only allow a certain number of miniature bases
Incoming clock server of standing carries out time service synchronization, and other femto cell do not allow then to access, and ensure that the demand of base station synchronization,
And under synchronization, bandwidth shared by clock server keeps in a certain range, reducing the technical risk of network and cost wind
Danger.
As shown in figure 3, for femto cell of the present invention and the flow diagram of the synchronous method embodiment of clock server, packet
It includes:
Step S301:Time service synchronization request and base station identification code are sent to clock server by femto cell;
Base station identification code is a kind of code for identifying femto cell, and each femto cell has unique base station identification code.Time service
Synchronization request is to authorize the request for carrying out time service synchronization, that is, authorizes the power that femto cell sends unitcast request to clock server
Profit.When femto cell needs to access clock server, time service synchronization request and Base Station Identification can be sent to clock server
Code.
Step S302:The time service synchronization request and base station identification code are received using clock server, detects current time
The time service synchronization request quantity received in section, when the time service synchronization request quantity of reception is less than or equal to preset value, to described
The corresponding femto cell of base station identification code, which is sent, allows link order;When the time service synchronization request quantity of reception is more than preset value
When, forbid link order to the corresponding femto cell transmission of the base station identification code;
The purpose of this step was ensured in the same period, only allowed a certain number of femto cell incoming clock servers
Carry out time service synchronization.The step performs in clock server, needs to change the synchronous protocol on clock server at this time, so as to
Realize judgment method.
Step S303:When receiving permission link order by femto cell, unitcast request is sent to clock server, is connect
It receives when forbidding link order, is spaced after the first preset time and sends time service synchronization request and Base Station Identification to clock server
Code;
Femto cell can just send unitcast request only when receiving permission link order to clock server, no
Then, unitcast request is not sent.
Step S304:Unitcast request is received using clock server, time service operation is carried out to the femto cell.
Clock server just carries out time service operation only when receiving unitcast request to femto cell, realizes wechat base
It stands synchronous with clock server.
The present embodiment can be by changing the synchronous protocol of femto cell and clock server, so as to fulfill the above-mentioned side of synchronization
Method.Time service synchronization request and base station identification code are sent to clock server by femto cell, clock server carries out judging to award
When synchronization request quantity, when reception time service synchronization request quantity be less than or equal to preset value when, to the base station identification code pair
The femto cell answered, which is sent, allows link order;When the time service synchronization request quantity of reception is more than preset value, to the base station
Link order is forbidden in the transmission of identification code corresponding femto cell, femto cell only receive allow link order when, just to
Clock server sends unitcast request, realizes synchronous with clock server.It receives when forbidding link order, needs interval pre-
If after the time time service synchronization request and base station identification code could be sent to clock server, re-start request, so as to fulfill
The same period only allows a certain number of femto cell incoming clock servers to carry out time service synchronization, other femto cell
Do not allow then to access, ensure that the demand of base station synchronization, and under synchronization, bandwidth shared by clock server is maintained at certain model
In enclosing, so as to reduce the technical risk of network and cost risk.
Can also preset value be determined using the following formula in one of the embodiments,;
Wherein, N represents preset value, and M represents the bandwidth of clock server, and n represents that clock server is per second miniature to every
The number for the timestamp network packet that base station is sent, L1 represent the shortest word section number of an Ethernet packet, and L2 represents timestamp net
The byte number of inter-packet gap between network packet.
In this way, it can determine that each period can receive under the premise of clock server bandwidth is known
Time service synchronization request quantity, so as to reduce the technical risk of network and cost risk.
In one of the embodiments, when femto cell continuously receives when forbidding link order of preset times, interval
Time service synchronization request and base station identification code are sent to clock server after second preset time, second preset time is more than institute
State the first preset time.
Femto cell receives when forbidding link order, is spaced after the first preset time and sends time service to clock server and synchronize
Request and base station identification code forbid link order when continuous several times request all receives, then can be spaced and slightly ask again for a long time, i.e.,
Second preset time is more than the first preset time, so as to avoid the wasting of resources caused by continuous request.
Synchronous method based on above-mentioned femto cell and clock server, the present invention also provides a kind of femto cell and clocks
The synchronization system of server, as shown in figure 4, for femto cell of the present invention and the structure of the synchronization system embodiment of clock server
Schematic diagram, including clock server 410, set on the synchronizing device 420 of femto cell:
Synchronizing device sends time service synchronization request and base station identification code to clock server;
Clock server receives the time service synchronization request and base station identification code, the time service received in detection current slot
Synchronization request quantity when the time service synchronization request quantity of reception is less than or equal to preset value, is corresponded to the base station identification code
Synchronizing device send allow link order;When the time service synchronization request quantity of reception is more than preset value, marked to the base station
Know the corresponding synchronizing device transmission of code and forbid link order;
Synchronizing device is received when allowing link order, is sent unitcast request to clock server, is received and forbid connecting
During instruction, it is spaced after preset time and sends time service synchronization request and base station identification code to clock server;
Clock server receives unitcast request, and time service operation is carried out to the femto cell.
The present embodiment sends time service synchronization request and base station identification code, clock service by femto cell to clock server
Device carries out judging time service synchronization request quantity, when the time service synchronization request quantity of reception is less than or equal to preset value, to described
The corresponding femto cell of base station identification code, which is sent, allows link order;When the time service synchronization request quantity of reception is more than preset value
When, forbid link order to the transmission of the base station identification code corresponding femto cell, femto cell only allows to connect receiving
When connecing instruction, unitcast request just is sent to clock server, is realized synchronous with clock server.It receives and forbids link order
When, it needs that time service synchronization request and base station identification code could be sent to clock server after being spaced preset time, re-starting please
It asks, so as to fulfill a certain number of femto cell incoming clock servers in the same period, is only allowed to carry out time service synchronizations,
His femto cell does not allow then to access, and ensure that the demand of base station synchronization, and under synchronization, bandwidth shared by clock server
It keeps in a certain range, so as to reduce the technical risk of network and cost risk.
Can also preset value be determined using the following formula in one of the embodiments,;
Wherein, N represents preset value, and M represents the bandwidth of clock server, and n represents that clock server is per second miniature to every
The number for the timestamp network packet that base station is sent, L1 represent the shortest word section number of an Ethernet packet, and L2 represents timestamp net
The byte number of inter-packet gap between network packet.
In this way, it can determine that each period can receive under the premise of clock server bandwidth is known
Time service synchronization request quantity, so as to reduce the technical risk of network and cost risk.
The femto cell and clock server of the femto cell of the present invention and the synchronization system of clock server and the present invention
Synchronous method be one-to-one, the relevant technologies in the synchronous method embodiment of above-mentioned femto cell and clock server are special
Sign and its technique effect are suitable for the synchronization system embodiment of femto cell and clock server, and details are not described herein.
Embodiment described above only expresses the several embodiments of the present invention, and description is more specific and detailed, but simultaneously
Cannot the limitation to the scope of the claims of the present invention therefore be interpreted as.It should be pointed out that for those of ordinary skill in the art
For, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the guarantor of the present invention
Protect range.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (5)
1. a kind of clock server is to the method for femto cell time service, which is characterized in that including:
Time service synchronization request and the base station identification code that femto cell is sent are obtained, wherein the base station identification code is micro- for a kind of mark
The code of type base station;
The time service synchronization request quantity received in current slot is detected, when the time service synchronization request quantity of reception is less than or equal to
During preset value, being sent to the corresponding femto cell of the base station identification code allows link order, receives the list that femto cell returns
Request is broadcast, time service operation is carried out to the femto cell;When the time service synchronization request quantity of reception is more than preset value, to described
Link order is forbidden in the corresponding femto cell transmission of base station identification code;
Preset value is determined using the following formula;
Wherein, N represents preset value, and M represents the bandwidth of clock server, and n represents that clock server is per second to every femto cell
The number of the timestamp network packet of transmission, L1 represent the shortest word section number of an Ethernet packet, and L2 represents timestamp network packet
Between inter-packet gap byte number.
A kind of 2. method of femto cell synchronous clock server, which is characterized in that including:
The time service synchronization request and base station identification code of this femto cell are sent to clock server, wherein the base station identification code is
A kind of code for identifying femto cell;
Receive the time service link order corresponding with the base station identification code of this femto cell that the clock server returns;Wherein,
The time service link order includes allowing link order and forbids link order, if the clock server connects in current slot
When the time service synchronization request quantity of receipts is less than or equal to preset value, returning allows link order;If when described in current slot
When the time service synchronization request quantity that clock server receives is more than preset value, link order is forbidden in return;
When time service link order is allows link order, unitcast request, synchronous clock server are sent to clock server;When
Time service link order sends time service synchronization request and base station after preset time when forbidding link order, to be spaced to clock server
Identification code;
Preset value is determined using the following formula;
Wherein, N represents preset value, and M represents the bandwidth of clock server, and n represents that clock server is per second to every femto cell
The number of the timestamp network packet of transmission, L1 represent the shortest word section number of an Ethernet packet, and L2 represents timestamp network packet
Between inter-packet gap byte number.
3. a kind of synchronous method of femto cell and clock server, which is characterized in that including:
Time service synchronization request and base station identification code are sent to clock server by femto cell, wherein the base station identification code is
A kind of code for identifying femto cell;
The time service synchronization request and base station identification code, the time service received in detection current slot are received using clock server
Synchronization request quantity when the time service synchronization request quantity of reception is less than or equal to preset value, is corresponded to the base station identification code
Femto cell send allow link order;When the time service synchronization request quantity of reception is more than preset value, marked to the base station
Know the corresponding femto cell transmission of code and forbid link order;
When receiving permission link order by femto cell, unitcast request is sent to clock server, receives and forbids connecting
During instruction, it is spaced after the first preset time and sends time service synchronization request and base station identification code to clock server;
Unitcast request is received using clock server, time service operation is carried out to the femto cell;
Preset value is determined using the following formula;
Wherein, N represents preset value, and M represents the bandwidth of clock server, and n represents that clock server is per second to every femto cell
The number of the timestamp network packet of transmission, L1 represent the shortest word section number of an Ethernet packet, and L2 represents timestamp network packet
Between inter-packet gap byte number.
4. the synchronous method of femto cell according to claim 3 and clock server, which is characterized in that work as femto cell
When forbidding link order of preset times is continuously received, is spaced after the second preset time and sends time service synchronization to clock server
Request and base station identification code, second preset time are more than first preset time.
5. the synchronization system of a kind of femto cell and clock server, which is characterized in that including clock server, set on miniature base
The synchronizing device stood:
Synchronizing device sends time service synchronization request and base station identification code to clock server, wherein the base station identification code is one kind
Identify the code of femto cell;
Clock server receives the time service synchronization request and base station identification code, and the time service received in detection current slot synchronizes
Number of requests, it is corresponding same to the base station identification code when the time service synchronization request quantity of reception is less than or equal to preset value
Walking device and sending allows link order;When the time service synchronization request quantity of reception is more than preset value, to the base station identification code
Link order is forbidden in corresponding synchronizing device transmission;
Synchronizing device is received when allowing link order, is sent unitcast request to clock server, is received and forbid link order
When, it is spaced after preset time and sends time service synchronization request and base station identification code to clock server;
Clock server receives unitcast request, and time service operation is carried out to the femto cell;
Clock server determines preset value using the following formula;
Wherein, N represents preset value, and M represents the bandwidth of clock server, and n represents that clock server is per second to every femto cell
The number of the timestamp network packet of transmission, L1 represent the shortest word section number of an Ethernet packet, and L2 represents timestamp network packet
Between inter-packet gap byte number.
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