CN103731897B - A kind of method and system of wireless backhaul - Google Patents
A kind of method and system of wireless backhaul Download PDFInfo
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- CN103731897B CN103731897B CN201210391329.6A CN201210391329A CN103731897B CN 103731897 B CN103731897 B CN 103731897B CN 201210391329 A CN201210391329 A CN 201210391329A CN 103731897 B CN103731897 B CN 103731897B
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Abstract
The present invention provides a kind of method and systems of wireless backhaul.Method therein includes: to preset for eNodeB and each base station Pico for providing dedicated antenna, dedicated channel and the dedicated frequency spectrum of passback resource for the adjacent base station Pico, and preset the routed path for arriving eNodeB for each base station Pico；The return data that the base station Pico for according to set routed path, return data being transmitted to the base station Pico for receiving backhaul service by the base station Pico of relaying, and receiving backhaul service is forwarded by the base station Pico of relaying.The deployment of the base station Pico can be made to become more flexible using the present invention and reduce lower deployment cost and expense.
Description
Technical field
This application involves mobile communication technology field more particularly to a kind of method and systems of wireless backhaul.
Background technique
Pico cell (Pico) with the introducing of long evolving system (LTE) heterogeneous network (Hetnet), in HetNet
The passback deployment of base station will bring new challenge to operator.In LTE Hetnet, the primary demand of operator is: 1)
The deployment of the base station Pico in Hetnet needs flexible；2) lower deployment cost and expense of the base station Pico in Hetnet cannot be too
Otherwise height influences whether operation profit.Currently, many operators have begun concern the base station Pico data back demand and
Related problem.
It is mainly to lead with optical fiber (microwave) and band data line in the data back technology of the existing base station Pico
To.But under HetNet environment, bandwidth required for the base station Pico is generally between 100MHz to 200MHz, and existing skill
The bandwidth of band data line in art is smaller, it is difficult to meet the bandwidth requirement of the above-mentioned base station Pico；The transmission energy of optical fiber (microwave)
Power generally in 1GHz or more, is far longer than the bandwidth requirement of the base station Pico, so if carrying out the number of the base station Pico using optical fiber
According to passback, it will cause the wastes of vast resources.Moreover, because the deployment of current fibre system is not popularized also, so if
The data back of the base station Pico is carried out using optical fiber, then the deployment of the base station Pico is by will necessarily be by fibre system deployment scenario
Limitation, it is difficult to accomplish to dispose the base station Pico according to network deployment request.
In summary, due to the method for the data back of the base station Pico in the prior art there is a problem of it is as described above, because
How this makes the deployment of the base station Pico become more flexible and reduces lower deployment cost and expense, it has also become one urgently in this field
Problem to be solved.
Summary of the invention
In view of this, the present invention provides a kind of method and system of wireless backhaul, so as to pass through each Pico base
The relaying stood realizes wireless backhaul, so that the deployment of the base station Pico becomes more flexible and reduces lower deployment cost and expense.
Technical solution of the present invention is specifically achieved in that
A kind of method of wireless backhaul, this method comprises:
It presets for evolved base station eNodeB for providing passback resource for the adjacent base station Pico cell Pico
Dedicated antenna, dedicated channel and dedicated frequency spectrum, and preset one for each base station Pico for receiving backhaul service and arrive
The routed path of eNodeB；
According to preset routed path, return data is transmitted to by the base station Pico of relaying and receives backhaul service
The base station Pico, and receive the return data that the base station Pico of backhaul service is forwarded by the base station Pico of the relaying.
Wherein, the routed path is a jump routed path or multihop routing path.
Wherein, this method may further comprise:
The transmission of return data is carried out using MIMO technique.
Wherein, this method may further comprise:
The transmission of return data is carried out using end-to-end resting period data transmission method.
Wherein, it is described using end-to-end resting period data transmission method carry out return data transmission include:
Preset a time cycle and in the time cycle be each base station Pico for receiving backhaul service and
It relays the base station Pico and distributes corresponding time point；
Pre-set time cycle and various time points are sent respectively to each base station Pico for receiving backhaul service
With the relaying base station Pico；
With each base station Pico for receiving backhaul service and relaying Pico base station synchronization time cycle and corresponding time point；
With each base station Pico for receiving backhaul service and relaying the base station Pico according to the time cycle and it is corresponding when
Between point carry out return data transmission.
Wherein, this method may further comprise:
Pass through period X2 interface synchronization time and phase with each base station Pico for receiving backhaul service and the relaying base station Pico
The time point answered.
Wherein, when there is new Pico base station access network network, it is described with each base station Pico for receiving backhaul service and in
It may further comprise: after Pico base station synchronization time cycle and corresponding time point
Receive the time point demand signalling that the new base station Pico is sent；
Corresponding time point is set for the new base station Pico, and time cycle and set time point are sent to newly
The base station Pico；
With new the Pico base station synchronization time cycle and corresponding time point；
The transmission of return data is carried out according to the time cycle and corresponding time point with the new base station Pico.
Wherein, this method may further comprise:
Pass through period X2 interface synchronization time and corresponding time point with the new base station Pico.
A kind of method of wireless backhaul is additionally provided in the present invention, this method comprises:
It presets to receive the base station Pico cell Pico of backhaul service for providing passback for the adjacent base station Pico
Dedicated antenna, dedicated channel and the dedicated frequency spectrum of resource；
The base station Pico for receiving backhaul service is sent according to preset routed path by the relaying base station Pico
Return data, and receive the return data by the relaying base station Pico forwarding.
Wherein, the routed path is a jump routed path or multihop routing path.
Wherein, this method may further comprise:
The transmission of return data is carried out using MIMO technique.
Wherein, this method may further comprise:
The transmission of return data is carried out using end-to-end resting period data transmission method.
Wherein, it is described using end-to-end resting period data transmission method carry out return data transmission include:
Receive a pre-set time cycle and assigned time point；
The time cycle and corresponding time point are synchronized with evolved base station eNodeB；
According to the transmission of time cycle and progress of corresponding time point return data after synchronizing.
Wherein, this method may further comprise:
The time cycle and corresponding time point are synchronized by X2 interface.
A kind of method of wireless backhaul is additionally provided in the present invention, this method comprises:
It presets for the relaying base station Pico cell Pico for providing the dedicated of passback resource for the adjacent base station Pico
Antenna, dedicated channel and dedicated frequency spectrum；
The relaying base station the Pico return data received according to the forwarding of preset routed path.
Wherein, this method may further comprise:
The transmission of return data is carried out using MIMO technique.
Wherein, this method may further comprise:
The transmission of return data is carried out using end-to-end resting period data transmission method.
Wherein, it is described using end-to-end resting period data transmission method carry out return data transmission include:
Receive a pre-set time cycle and assigned time point；
The time cycle and corresponding time point are synchronized with evolved base station eNodeB；
According to the transmission of time cycle and progress of corresponding time point return data after synchronizing.
Wherein, this method may further comprise:
The time cycle and corresponding time point are synchronized by X2 interface.
A kind of wireless backhaul system is additionally provided in the present invention, which includes: evolved base station eNodeB, receives passback
The base station Pico cell Pico of service and at least one relaying base station Pico；
The eNodeB is previously provided with for providing the Special hoist of passback resource for the adjacent base station Pico cell Pico
Line, dedicated channel and dedicated frequency spectrum, for presetting one to eNodeB for each base station Pico for receiving backhaul service
Routed path；It is also used to according to preset routed path, return data is transmitted to by receiving by the relaying base station Pico
The base station Pico of backhaul service, and the base station Pico for receiving backhaul service passes through the passback number of the relaying base station Pico forwarding
According to；
The base station relaying Pico, for eNodeB or receive backhaul service the base station Pico forward return data；
The base station Pico for receiving backhaul service, for receiving return data；It is also used to passing through return data into relaying
The base station Pico is sent to eNodeB.
Wherein, the eNodeB is also used to preset a time cycle and is each connect in the time cycle
Corresponding time point is distributed by the base station Pico of backhaul service and the relaying base station Pico, by pre-set time cycle and each
Time point is sent respectively to each base station Pico for receiving backhaul service and the relaying base station Pico, with each backhaul service that receives
The base station Pico and relaying Pico base station synchronization time cycle and corresponding time point, and with each Pico base for receiving backhaul service
Stand and relay the transmission that the base station Pico carries out return data according to the time cycle and corresponding time point.
Wherein, the eNodeB includes: path setting module, sending module and receiving module；
The path setting module is arrived for presetting one for each base station Pico for receiving backhaul service
The routed path of eNodeB；The preset routed path is sent to sending module；
The sending module, for being turned return data by the relaying base station Pico according to preset routed path
Issue the base station Pico for receiving backhaul service；
The receiving module, the base station Pico for receiving backhaul service pass through the passback of the relaying base station Pico forwarding
Data.
Wherein, time setup module and synchronization module be may further comprise: in the eNodeB；
The time setup module, for presetting a time cycle and being each receiving in the time cycle
Corresponding time point is distributed in the base station Pico and the relaying base station Pico of backhaul service；Time cycle and various time points are sent to
Synchronization module；
The synchronization module is also used to pre-set time cycle and various time points being sent respectively to each receiving
The base station Pico of backhaul service and the relaying base station Pico, and with each base station Pico for receiving backhaul service and relay the base station Pico
Time cycle after synchronizing and corresponding time point are sent to the sending module by period synchronization time and corresponding time point
And receiving module.
A kind of evolved base station is additionally provided in the present invention, which includes: path setting module, sending module
And receiving module；
The path setting module, for presetting one for each base station Pico cell Pico for receiving backhaul service
Routed path of the item to the evolved base station；The preset routed path is sent to sending module；
The sending module, for being turned return data by the relaying base station Pico according to preset routed path
Issue the base station Pico for receiving backhaul service；
The receiving module, the base station Pico for receiving backhaul service pass through the passback of the relaying base station Pico forwarding
Data.
Wherein, time setup module and synchronization module be may further comprise: in the evolved base station；
The time setup module, for presetting a time cycle and being each receiving in the time cycle
Corresponding time point is distributed in the base station Pico and the relaying base station Pico of backhaul service；Time cycle and various time points are sent to
Sending module；
The sending module is also used to pre-set time cycle and various time points being sent respectively to each receiving
The base station Pico and the relaying base station Pico of backhaul service；
The synchronization module, for all with each base station Pico for receiving backhaul service and relaying Pico base station synchronization time
Phase and corresponding time point.
A kind of base station Pico cell Pico for receiving backhaul service is additionally provided in the present invention, this receives backhaul service
The base station Pico includes: the second sending module and the second receiving module；
Second sending module, for sending passback by the relaying base station Pico according to preset routed path
Data；
Second receiving module, for receiving the return data for passing through the relaying base station Pico forwarding.
Wherein, the base station Pico for receiving backhaul service may further comprise: the second synchronization module；
Second synchronization module, for receiving a pre-set time cycle and time point, and with evolved base
The eNodeB that stands synchronizes the time cycle and time point, and the time cycle after synchronizing and time point are sent to described second and sent
Module and the second receiving module；
Second receiving module, be also used to according to after synchronizing time cycle and time point receive through the relaying
The return data of the base station Pico forwarding；
Second sending module, be also used to according to after synchronizing time cycle and time point by relaying the base station Pico hair
Send return data.
A kind of base station relaying Pico cell Pico is additionally provided in the present invention, the base station relaying Pico includes: that third is sent
Module and third receiving module；
The return data received for receiving return data, and is sent to third and sent by the third receiving module
Module；
The third sending module, for the return data received according to the forwarding of preset routed path.
Wherein, the base station relaying Pico may further comprise: third synchronization module；
The third synchronization module, for receiving a pre-set time cycle and time point, and with evolved base
The eNodeB that stands synchronizes the time cycle and time point, and the time cycle after synchronizing and time point are sent to the third and sent out
Send module and third receiving module；
The third receiving module, be also used to according to after synchronizing time cycle and time point receive return data；
The third sending module, be also used to according to after synchronizing time cycle and the received passback of time point forwarding
Data.
As seen from the above technical solution, the present invention is due to presetting one for each base station Pico for receiving backhaul service
Item is to the routed path of eNodeB, therefore eNodeB can will be returned by the base station Pico of relaying according to set routed path
Pass the Pico that data forwarding passes through relaying to the base station Pico for receiving the base station Pico of backhaul service, and receiving backhaul service
The return data of base station forwarding, so as to realize wireless backhaul by the relaying of each base station Pico, so that the base station Pico
Deployment becomes more flexible and reduces lower deployment cost and expense.
Detailed description of the invention
Fig. 1 is the flow chart of the method for the wireless backhaul in the embodiment of the present invention.
Fig. 2 is the flow chart of the end-to-end tdm data transmission method in the specific embodiment of the invention.
Fig. 3 is the flow chart of the embodiment one in the present invention.
Fig. 4 is the structural schematic diagram of the wireless backhaul system in the embodiment of the present invention.
Fig. 5 is the structural schematic diagram of the eNodeB in the embodiment of the present invention.
Fig. 6 is the structural schematic diagram of the base station Pico for receiving backhaul service in the embodiment of the present invention.
Fig. 7 is the structural schematic diagram of the relaying base station Pico in the embodiment of the present invention.
Specific embodiment
For technical solution of the present invention and advantage is more clearly understood, below in conjunction with drawings and the specific embodiments, to this
Invention is described in further detail.
Fig. 1 is the flow chart of the method for the wireless backhaul in the embodiment of the present invention.
As shown in Figure 1, the method for the wireless backhaul in the embodiment of the present invention includes step as described below:
It step 101, is evolved base station (eNodeB), each base station Pico for receiving backhaul service and the relaying base station Pico
It presets for providing dedicated antenna, dedicated channel and the dedicated frequency spectrum of passback resource for the adjacent base station Pico.
In this step, by for eNodeB, each base station Pico for receiving backhaul service and relaying the base station Pico it is preparatory
Corresponding dedicated antenna, dedicated channel and dedicated frequency spectrum are set, for providing passback resource for the adjacent base station Pico.Wherein,
The dedicated frequency spectrum can be the frequency spectrum of defined in 802.11n agreement.In addition, the base station Pico for receiving backhaul service
It is referred to as the base station target Pico.
In addition, in a specific embodiment of the present invention, since the Pico base station adjacent with eNodeB can be one or more
A, therefore, eNodeB can provide passback resource for the adjacent base station Pico known to one or more, that is to say, that eNodeB
Return data can be forwarded by one or more base stations Pico adjacent thereto；Similarly, due to some base station Pico phase
The adjacent base station Pico is also possible to one or more, therefore, each base station Pico for receiving backhaul service and the relaying base station Pico
Also passback resource can be provided for the adjacent base station Pico known to one or more, that is to say, that each backhaul service that receives
The base station Pico and the relaying base station Pico can forward return data by one or more base stations Pico adjacent thereto.
Step 102, the routed path for arriving eNodeB is preset for each base station Pico for receiving backhaul service.
Because the Pico base station adjacent with eNodeB and each base station Pico may have one or more, eNodeB can
To be routed to each base station Pico by different routing routes.In order to ensure the uniqueness on wireless backhaul routing route road, institute
In this step, will preset the routed path for arriving eNodeB for each base station Pico for receiving backhaul service,
So that eNodeB and each receives to have between the base station Pico of backhaul service and an only routed path.It is above-mentioned setting
After routed path, eNodeB and each base station Pico for receiving backhaul service can by above-mentioned preset routed path into
Row data passed-back traffic.
In addition, in a specific embodiment of the present invention, according to different actual application environments, each base station Pico can both be made
For the base station Pico for receiving backhaul service, the relaying base station Pico also can be used as.For example, in certain actual application environment, some
The base station Pico can be used as the base station Pico for receiving backhaul service, the i.e. base station target Pcio；And in another actual application environment,
The base station Pico is then but also as the relaying base station Pico.
Preferably, in a specific embodiment of the present invention, the routed path can be a jump routed path, it is also possible to
Multihop routing path.
In addition, in a specific embodiment of the present invention, the execution sequence between above-mentioned steps 101 and 102 can be according to reality
Border needs to be set in advance.For example, above-mentioned steps 101 and 102 may be performed simultaneously, it is also possible to first carry out step 101, then
Execute step 102；Alternatively, first carrying out step 102, then execute step 101.
Step 103, eNodeB is forwarded return data by the base station Pico of relaying according to preset routed path
It is forwarded to the base station Pico for receiving the base station Pico of backhaul service, and receiving backhaul service by the base station Pico of relaying
Return data.
Due in a step 102, having preset one for each base station Pico for receiving backhaul service and having arrived
The routed path of eNodeB.Therefore, eNodeB can be according to preset between the base station Pico that is receiving backhaul service
Return data is sent to the base station Pico for receiving backhaul service by routed path；Meanwhile eNodeB can also pass through the routed path
Receive the return data that the base station Pico for receiving backhaul service is sent.Due to eNodeB and the Pico base for receiving backhaul service
Routing route between standing is routed path, therefore return data will be transmitted to receiving by the base station Pico relayed by eNodeB
The base station Pico of backhaul service, and receive returning for Pico base station forwarding of the base station Pico for receiving backhaul service by relaying
Pass data.
Similarly, the base station Pico for receiving backhaul service will be according to preset routed path, by relaying Pico
Base station sends return data, and receives the return data by the relaying base station Pico forwarding.And the base station relaying Pico
Then by the return data received according to the forwarding of preset routed path.
Further, in the preferred embodiment, multiple-input and multiple-output (MIMO) technology can be used to be returned
The transmission of data, so as to greatly improve the handling capacity of data transmission.Wherein, the MIMO technology can be 802.11n
MIMO technology.It is wirelessly returned since the above-mentioned routed path for each Pico base station sets for receiving backhaul service belongs to static routing
Road topology, wherein the only limited base station relaying Pico, therefore the signal detection of MIMO with processing (for example, MIMO is synchronous, channel
Estimation etc.) it will be fairly simple.
Further, in the preferred embodiment, it can also be passed by using (TDM) data of end-to-end resting period
Transmission method carries out the transmission of return data, so as to be effectively reduced the probability of data collision, realizes that multi-hop is collisionless wireless
Transmission.
Preferably, Fig. 2 is the flow chart of the end-to-end tdm data transmission method in the specific embodiment of the invention.Such as Fig. 2 institute
Show, the end-to-end tdm data transmission method may include step as described below:
Step 201, it presets a time cycle and is each to receive backhaul service in the time cycle
Corresponding time point is distributed in the base station Pico and the relaying base station Pico.
In the preferred embodiment, eNodeB or network management can preset the time cycle of a length of P at one.
Wherein, the specific value of P can be preset according to specific application environment.It is then possible to be connect according to each of eNodeB is belonged to
It is each to receive backhaul service in the time cycle by the base station Pico of backhaul service and the total N of the relaying base station Pico
The base station Pico and the relaying base station Pico distribute corresponding time point.For example, N number of time point: T is arranged in the time cycle1,
T2... ..., TN, then receive the base station Pico and the relaying base station Pico one time point of distribution of backhaul service for each.Example
Such as, by T1The 1st base station Pico is distributed to, by T2The 2nd base station ... ... Pico is distributed to, by TNDistribute to n-th Pico base
It stands.
In addition, in the preferred embodiment, at the same time between two time points adjacent in the period between
It, can also be unequal every can be equal.
Step 202, pre-set time cycle and various time points are sent respectively to each backhaul service that receives
The base station Pico and the relaying base station Pico.
For example, in a specific embodiment of the present invention, if the time point for distributing to the 1st base station Pico is T1, then will
Time cycle and time point T1It is sent to the 1st base station Pico；If the time point for distributing to the 2nd base station Pico is T2, then
By time cycle and time point T2It is sent to the 2nd base station Pico；..., and so on.Therefore, each to receive backhaul service
The base station Pico and the relaying base station Pico will receive a pre-set time cycle and assigned time point.
Step 203, eNodeB and each base station Pico for receiving backhaul service and relaying Pico base station synchronization time cycle
With corresponding time point.
Preferably, the eNodeB and each base station Pico for receiving backhaul service and the relaying base station Pico can pass through X2
Interface synchronization time cycle and corresponding time point, to realize that the time cycle is synchronous with various time points.
Step 204, eNodeB and each base station Pico for receiving backhaul service and the relaying base station Pico are according to the time
Period and corresponding time point carry out the transmission of return data.
For example, in a specific embodiment of the present invention, in a time cycle, the 1st base station Pico will be in the time
Time point T in period1With eNodeB carry out return data transmission, the 2nd base station Pico by the time cycle when
Between point T2The transmission ... ... of return data is carried out with eNodeB, and so on.Therefore, each Pico base for receiving backhaul service
Stand with the relaying base station Pico can according to after synchronous time cycle and corresponding time point carry out the transmission of return data.
Due within the period at the same time, eNodeB and each base station Pico for receiving backhaul service and Pico base is relayed
Stand carry out return data transmission time point it is not identical, therefore data collision will not be generated.When the above-mentioned time cycle when
When long P is greater than certain numerical value, the probability that data collision occurs can be substantially reduced, therefore the collisionless nothing of multi-hop may be implemented
Line transmission.Moreover, because the probability that data collision occurs is very low, therefore handling capacity also will be with time of multi-hop transmission end to end
It counts and declines.
Further, in the preferred embodiment, described end-to-end when there is new Pico base station access network network
Can also include: after step 203 in tdm data transmission method
Step 2031, when new Pico base station access network network, the eNodeB which belongs to it is sent
Time point demand signalling.
Preferably, the new base station Pico can request letter by the eNodeB sending time point that X2 interface belongs to it
It enables, with to eNodeB request time period and corresponding time point.Therefore, when new Pico base station access network network, ownership
ENodeB will receive the time point demand signalling that the new base station Pico is sent.
Step 2032, eNodeB is that the new base station Pico is arranged corresponding time point, and by time cycle and set
Time point be sent to the new base station Pico.
Step 2033, eNodeB and new Pico base station synchronization time cycle and corresponding time point.
Preferably, the eNodeB and the new base station Pico can pass through X2 interface period synchronization time and corresponding time
Point.
After executing above-mentioned steps 2011~2033, eNodeB and the new base station Pico can be according to the time cycles
The transmission of return data is carried out with corresponding time point.
It should be noted that above-mentioned steps 2011~2033, execute sequence with what is do not fixed between step 204.Example
Such as, it may be performed simultaneously, can also be executed according to predetermined execution sequence.Details are not described herein.
Technical solution of the present invention will further be introduced in a manner of a specific embodiment below.
Embodiment one:
Fig. 3 is the flow chart of the embodiment one in the present invention.It is as shown in Figure 3:
Step 301, the routed path for arriving eNodeB is preset for each base station Pico for receiving backhaul service.
In this step, eNodeB will preset one to eNodeB for each base station Pico for receiving backhaul service
Routed path.
Step 302, it presets a time cycle and is each to receive backhaul service in the time cycle
Corresponding time point is distributed in the base station Pico and the relaying base station Pico.
In this step, eNodeB is by the time cycle of P a length of when presetting one and in the time cycle
Corresponding time point is distributed in each base station Pico for receiving backhaul service and the relaying base station Pico.For example, as shown in figure 3, in the middle
When the base station Pico is respectively Pico1 and Pico2 with the base station Pico for receiving backhaul service, eNodeB will be arranged a length of at one
Then time point T is arranged for Pico1 in the time cycle of P1, for Pico2, time point T is set2。
Step 303, pre-set time cycle and various time points are sent respectively to each backhaul service that receives
The base station Pico and the relaying base station Pico.
In this step, time cycle and various time points will be sent respectively to each receiving by X2 interface by eNodeB
The base station Pico and the relaying base station Pico of backhaul service.For example, as shown in figure 3, eNodeB will be by X2 interface by the time cycle
With time point T1Pico1 is sent, and passes through X2 interface for time cycle and time point T2Send Pico2.
Step 304, eNodeB and each base station Pico for receiving backhaul service and relaying Pico base station synchronization time cycle
With corresponding time point.
For example, as shown in figure 3, eNodeB can by X2 interface and Pico1 and Pico2 period synchronization time and it is corresponding when
Between point.
Step 305, when new Pico base station access network network, which requests to eNodeB sending time point
Signaling.
For example, as shown in figure 3, the Pico3 will be to eNodeB when there is the new base station a Pico Pico3 to access network
Sending time point demand signalling, with to eNodeB request time period and corresponding time point.
Step 306, eNodeB is that the new base station Pico is arranged corresponding time point, and by time cycle and set
Time point is sent to the new base station Pico.
For example, as shown in figure 3, corresponding time point T will be arranged for Pico3 in eNodeB3, and by time cycle and set
Time point T3It is sent to Pico3.
Step 307, eNodeB and new Pico base station synchronization time cycle and corresponding time point.
For example, as shown in figure 3, eNodeB and Pico3 period synchronization time and corresponding time point.
Step 308, when eNodeB is needed through Pico1 return data to Pico3, return data is sent to by eNodeB
Pico1。
Step 309, Pico1 is in time point T1Return data is transmitted to Pico3.
Step 310, Pico3 is in time point T3Return data is transmitted to eNodeB by Pico1.
The above method provided according to the present invention, the present invention also provides corresponding wireless backhaul systems, specifically refer to
Fig. 4.
Fig. 4 is the structural schematic diagram of the wireless backhaul system in the embodiment of the present invention.As shown in figure 4, the wireless backhaul system
System includes: eNodeB 401, the base station Pico 403 and at least one relaying base station Pico 402 for receiving backhaul service.
The eNodeB is previously provided with for providing the Special hoist of passback resource for the adjacent base station Pico cell Pico
Line, dedicated channel and dedicated frequency spectrum, for presetting one to eNodeB for each base station Pico for receiving backhaul service
Routed path；It is also used to according to preset routed path, return data is transmitted to by receiving by the relaying base station Pico
The base station Pico of backhaul service, and the base station Pico for receiving backhaul service passes through the passback number of the relaying base station Pico forwarding
According to；
The base station relaying Pico, for eNodeB or receive backhaul service the base station Pico forward return data；
The base station Pico for receiving backhaul service, for receiving return data；It is also used to passing through return data into relaying
The base station Pico is sent to eNodeB.
Preferably, the eNodeB can be further used for presetting a time cycle and in the time cycle
Corresponding time point is distributed for each base station Pico for receiving backhaul service and the relaying base station Pico, by pre-set week time
Phase and various time points are sent respectively to each base station Pico for receiving backhaul service and the relaying base station Pico, receive back with each
It passes the base station Pico of service and relays Pico base station synchronization time cycle and corresponding time point, and receive backhaul service with each
The base station Pico and the relaying base station Pico the transmission of return data is carried out according to the time cycle and corresponding time point.
Fig. 5 is the structural schematic diagram of the eNodeB in the embodiment of the present invention.As shown in figure 5, the eNodeB includes: path
Setting module 501, sending module 502 and receiving module 503.
The path setting module is arrived for presetting one for each base station Pico for receiving backhaul service
The routed path of eNodeB；The preset routed path is sent to sending module 502；
The sending module 502 is used for according to preset routed path, by relaying the base station Pico for return data
It is transmitted to the base station Pico for receiving backhaul service；
The receiving module 503, the base station Pico for receiving backhaul service pass through the forwarding of the relaying base station Pico
Return data.
Preferably, in a specific embodiment of the present invention, can also further comprise in the eNodeB: time setup module
504 and synchronization module 505.
The time setup module 504, for presetting a time cycle and being each in the time cycle
Corresponding time point is distributed in the base station Pico and the relaying base station Pico for receiving backhaul service；Time cycle and various time points are sent out
Give synchronization module 505；
The synchronization module 505 is also used to for being sent respectively to pre-set time cycle and various time points each
Receive backhaul service the base station Pico and relaying the base station Pico, and with each base station Pico for receiving backhaul service and relay Pico
Time cycle after synchronizing and corresponding time point are sent to the transmission by base station synchronization time cycle and corresponding time point
Module 502 and receiving module 503.
Fig. 6 is the structural schematic diagram of the base station Pico for receiving backhaul service in the embodiment of the present invention.As shown in fig. 6, institute
State that receive the base station Pico of backhaul service include: the second sending module 601 and the second receiving module 602；
Second sending module 601, for being sent back by relaying the base station Pico according to preset routed path
Pass data；
Second receiving module 602, for receiving the return data for passing through the relaying base station Pico forwarding.
Preferably, in a specific embodiment of the present invention, it can also be further in the base station Pico for receiving backhaul service
It include: the second synchronization module 603；
Second synchronization module 603, for receiving a pre-set time cycle and time point, and with it is evolved
Base station eNodeB synchronizes the time cycle and time point, and the time cycle after synchronizing and time point are sent to second hair
Send module 601 and the second receiving module 602；
Second receiving module 602, be also used to according to after synchronizing time cycle and time point receive by described
After the return data of the base station Pico forwarding；
Second sending module 601, be also used to according to after synchronizing time cycle and time point by relaying Pico base
It stands and sends return data.
Fig. 7 is the structural schematic diagram of the relaying base station Pico in the embodiment of the present invention.As shown in fig. 6, the relaying Pico
Base station includes: third sending module 701 and third receiving module 702；
The third receiving module 702 is sent to third hair for receiving return data, and by the return data received
Send module 701；
The third sending module 701, for the return data received according to the forwarding of preset routed path.
Preferably, in a specific embodiment of the present invention, the base station relaying Pico may further comprise: the synchronous mould of third
Block 703；
The third synchronization module 703, for receiving a pre-set time cycle and time point, and with it is evolved
Base station eNodeB synchronizes the time cycle and time point, and the time cycle after synchronizing and time point are sent to the third
Sending module 701 and third receiving module 702；
The third receiving module 702, be also used to according to after synchronizing time cycle and time point receive return data；
The third sending module 701, be also used to according to after synchronizing time cycle and time point forwarding it is received
Return data.
Preferably, in a specific embodiment of the present invention, if in certain actual application environment, when the receiving passback
The base station Pico of service by as relaying the base station Pico in use, then the base station Pico by as relaying the base station Pico when third
Sending module, third receiving module and third synchronization module can correspond respectively to the base station Pico by as receiving passback clothes
The second sending module, the second receiving module and the second synchronization module when the base station Pico of business.
In conclusion in the inventive solutions, due to that will be that each base station Pico for receiving backhaul service is pre-
The routed path for arriving eNodeB is first set, therefore eNodeB can pass through the Pico of relaying according to set routed path
Return data is transmitted to the base station Pico for receiving backhaul service by base station, and during the base station Pico for receiving backhaul service passes through
After the forwarding of the base station Pico return data, it is possible to wireless backhaul is realized by the relaying of each base station Pico, without
Wireless backhaul is carried out by wideband data line and optical fiber, therefore can satisfy the bandwidth requirement of wireless backhaul, Er Qiewu completely
Special fiber plant is needed, so that the deployment of the base station Pico becomes more flexible and reduces lower deployment cost and expense.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent substitution, improvement and etc. done be should be included within the scope of the present invention.
Claims (29)
1. a kind of method of wireless backhaul, which is characterized in that this method comprises:
It is set in advance for evolved base station eNodeB, each base station Pico cell Pico for receiving backhaul service and the relaying base station Pico
It sets for providing dedicated antenna, dedicated channel and the dedicated frequency spectrum of passback resource for the adjacent base station Pico, and is each receiving
The base station Pico of backhaul service presets the routed path for arriving eNodeB；
According to preset routed path, return data is transmitted to the Pico for receiving backhaul service by the relaying base station Pico
Base station, and the base station Pico for receiving backhaul service passes through the return data of the relaying base station Pico forwarding.
2. according to the method described in claim 1, it is characterized by:
The routed path is a jump routed path or multihop routing path.
3. the method according to claim 1, wherein this method may further comprise:
The transmission of return data is carried out using MIMO technique.
4. method according to claim 1 or 3, which is characterized in that this method may further comprise:
The transmission of return data is carried out using end-to-end resting period data transmission method.
5. according to the method described in claim 4, it is characterized in that, it is described using end-to-end resting period data transmission method into
The transmission of row return data includes:
It presets a time cycle and is each base station Pico for receiving backhaul service and relaying in the time cycle
Corresponding time point is distributed in the base station Pico；
Pre-set time cycle and various time points are sent respectively to each base station Pico for receiving backhaul service in
After the base station Pico；
With each base station Pico for receiving backhaul service and relaying Pico base station synchronization time cycle and corresponding time point；
With each base station Pico for receiving backhaul service and the relaying base station Pico according to the time cycle and corresponding time point
Carry out the transmission of return data.
6. according to the method described in claim 5, it is characterized in that, this method may further comprise:
Pass through period X2 interface synchronization time and corresponding with each base station Pico for receiving backhaul service and the relaying base station Pico
Time point.
7. according to the method described in claim 5, it is characterized in that, when there is new Pico base station access network network, it is described with it is each
A base station Pico for receiving backhaul service and relaying Pico base station synchronization time cycle and corresponding time point are also further later
Include:
Receive the time point demand signalling that the new base station Pico is sent；
Corresponding time point is set for the new base station Pico, and time cycle and set time point is sent to new
The base station Pico；
With new the Pico base station synchronization time cycle and corresponding time point；
The transmission of return data is carried out according to the time cycle and corresponding time point with the new base station Pico.
8. the method according to the description of claim 7 is characterized in that this method may further comprise:
Pass through period X2 interface synchronization time and corresponding time point with the new base station Pico.
9. a kind of method of wireless backhaul, which is characterized in that this method comprises:
It presets to receive the base station Pico cell Pico of backhaul service for providing passback resource for the adjacent base station Pico
Dedicated antenna, dedicated channel and dedicated frequency spectrum, and the base station Pico to receive backhaul service presets one to evolved
The routed path of base station eNodeB；
The base station Pico for receiving backhaul service sends passback according to preset routed path, by the relaying base station Pico
Data, and receive the return data by the relaying base station Pico forwarding；
Wherein, the eNodeB and the relaying base station Pico are previously provided with for providing passback resource for the adjacent base station Pico
Dedicated antenna, dedicated channel and dedicated frequency spectrum.
10. according to the method described in claim 9, it is characterized by:
The routed path is a jump routed path or multihop routing path.
11. according to the method described in claim 9, it is characterized in that, this method may further comprise:
The transmission of return data is carried out using MIMO technique.
12. the method according to claim 9 or 11, which is characterized in that this method may further comprise:
The transmission of return data is carried out using end-to-end resting period data transmission method.
13. according to the method for claim 12, which is characterized in that described to use end-to-end resting period data transmission method
Carry out return data transmission include:
Receive a pre-set time cycle and assigned time point；
The time cycle and corresponding time point are synchronized with evolved base station eNodeB；
According to the transmission of time cycle and progress of corresponding time point return data after synchronizing.
14. according to the method for claim 13, which is characterized in that this method may further comprise:
The time cycle and corresponding time point are synchronized by X2 interface.
15. a kind of method of wireless backhaul, which is characterized in that this method comprises:
For relaying the base station Pico cell Pico preset for for the adjacent base station Pico provide passback resource dedicated antenna,
Dedicated channel and dedicated frequency spectrum；
The relaying base station the Pico return data received according to the forwarding of preset routed path；
Wherein, the base station Pico for receiving backhaul service is preset with the routed path for arriving evolved base station eNodeB, and
The eNodeB and Pico for receiving backhaul service is previously provided with for providing passback resource for the adjacent base station Pico
Dedicated antenna, dedicated channel and dedicated frequency spectrum.
16. according to the method for claim 15, which is characterized in that this method may further comprise:
The transmission of return data is carried out using MIMO technique.
17. method according to claim 15 or 16, which is characterized in that this method may further comprise:
The transmission of return data is carried out using end-to-end resting period data transmission method.
18. according to the method for claim 17, which is characterized in that described to use end-to-end resting period data transmission method
Carry out return data transmission include:
Receive a pre-set time cycle and assigned time point；
The time cycle and corresponding time point are synchronized with evolved base station eNodeB；
According to the transmission of time cycle and progress of corresponding time point return data after synchronizing.
19. according to the method for claim 18, which is characterized in that this method may further comprise:
The time cycle and corresponding time point are synchronized by X2 interface.
20. a kind of wireless backhaul system, which is characterized in that the system includes: evolved base station eNodeB, receives backhaul service
The base station Pico cell Pico and at least one relaying base station Pico；
The eNodeB, be previously provided with for for the adjacent base station Pico cell Pico provide passback resource dedicated antenna,
Dedicated channel and dedicated frequency spectrum, for presetting the road for arriving eNodeB for each base station Pico for receiving backhaul service
By path；It is also used to according to preset routed path, return data is transmitted to by receiving passback by the relaying base station Pico
The base station Pico of service, and the base station Pico for receiving backhaul service passes through the return data of the relaying base station Pico forwarding；
The base station relaying Pico is previously provided with for providing the dedicated of passback resource for the adjacent base station Pico cell Pico
Antenna, dedicated channel and dedicated frequency spectrum, for eNodeB or receive backhaul service the base station Pico forward return data；
The base station Pico for receiving backhaul service is previously provided with for providing passback for the adjacent base station Pico cell Pico
Dedicated antenna, dedicated channel and the dedicated frequency spectrum of resource, for receiving return data；It is also used to passing through return data into relaying
The base station Pico is sent to eNodeB.
21. system according to claim 20, it is characterised in that:
The eNodeB is also used to preset a time cycle and is each to receive backhaul service in the time cycle
The base station Pico and the relaying base station Pico distribute corresponding time point, pre-set time cycle and various time points are distinguished
Be sent to each base station Pico for receiving backhaul service and relaying the base station Pico, with each base station Pico for receiving backhaul service and
Relay Pico base station synchronization time cycle and corresponding time point, and with each base station Pico for receiving backhaul service and relaying
The base station Pico carries out the transmission of return data according to the time cycle and corresponding time point.
22. system according to claim 21, which is characterized in that the eNodeB includes: path setting module, sends mould
Block and receiving module；
The path setting module arrives eNodeB's for presetting one for each base station Pico for receiving backhaul service
Routed path；The preset routed path is sent to sending module；
The sending module, for being transmitted to return data by the relaying base station Pico according to preset routed path
Receive the base station Pico of backhaul service；
The receiving module, the base station Pico for receiving backhaul service pass through the passback number of the relaying base station Pico forwarding
According to.
23. system according to claim 22, which is characterized in that may further comprise: that the time is arranged in the eNodeB
Module and synchronization module；
The time setup module, for presetting a time cycle and being each receiving passback in the time cycle
Corresponding time point is distributed in the base station Pico and the relaying base station Pico of service；Time cycle is sent to various time points synchronous
Module；
The synchronization module is also used to for pre-set time cycle and various time points to be sent respectively to each receiving passback
The base station Pico of service and the relaying base station Pico, and with each base station Pico for receiving backhaul service and relay Pico base station synchronization
Time cycle after synchronizing and corresponding time point are sent to the sending module and connect by time cycle and corresponding time point
Receive module.
24. a kind of evolved base station, which is characterized in that the evolved base station includes: path setting module, sending module, reception
Module and it is pre-set for for the adjacent base station Pico cell Pico provide return resource dedicated antenna, dedicated channel
With dedicated frequency spectrum；
The path setting module, for presetting one to the evolution for each base station Pico for receiving backhaul service
The routed path of type base station；The preset routed path is sent to sending module；
The sending module, for being transmitted to return data by the relaying base station Pico according to preset routed path
Receive the base station Pico of backhaul service；
The receiving module, the base station Pico for receiving backhaul service pass through the passback number of the relaying base station Pico forwarding
According to；
Wherein, the base station Pico for receiving backhaul service and the relaying base station Pico are previously provided with for for adjacent Pico
Base station provides dedicated antenna, dedicated channel and the dedicated frequency spectrum of passback resource.
25. evolved base station according to claim 24, which is characterized in that also further wrapped in the evolved base station
It includes: time setup module and synchronization module；
The time setup module, for presetting a time cycle and being each receiving passback in the time cycle
Corresponding time point is distributed in the base station Pico and the relaying base station Pico of service；Time cycle and various time points are sent to transmission
Module；
The sending module is also used to for pre-set time cycle and various time points to be sent respectively to each receiving passback
The base station Pico and the relaying base station Pico of service；
The synchronization module, for each base station Pico for receiving backhaul service and relaying the Pico base station synchronization time cycle and
Corresponding time point.
26. a kind of base station Pico cell Pico for receiving backhaul service, which is characterized in that this receives the base station Pico of backhaul service
It include: the second sending module, the second receiving module, pre-set for for the adjacent base station Pico cell Pico providing passback
Dedicated antenna, dedicated channel and the dedicated frequency spectrum of resource and a preset routing road to evolved base station eNodeB
Diameter；
Second sending module, for sending return data by the relaying base station Pico according to preset routed path；
Second receiving module, for receiving the return data for passing through the relaying base station Pico forwarding；
Wherein, the eNodeB and the relaying base station Pico are previously provided with for providing passback resource for the adjacent base station Pico
Dedicated antenna, dedicated channel and dedicated frequency spectrum.
27. the base station Pico according to claim 26 for receiving backhaul service, which is characterized in that described to receive backhaul service
The base station Pico may further comprise: the second synchronization module；
Second synchronization module, for receiving a pre-set time cycle and time point, and and evolved base station
ENodeB synchronizes the time cycle and time point, and the time cycle after synchronizing and time point are sent to described second and send mould
Block and the second receiving module；
Second receiving module, be also used to according to after synchronizing time cycle and time point receive through the relaying Pico base
Stand forwarding return data；
Second sending module, be also used to according to after synchronizing time cycle and time point by relay the base station Pico send back
Pass data.
28. a kind of base station relaying Pico cell Pico, which is characterized in that the base station relaying Pico includes: third sending module,
It is three receiving modules and the pre-set dedicated antenna for providing passback resource for the adjacent base station Pico cell Pico, special
With channel and dedicated frequency spectrum；
The third receiving module is sent to third sending module for receiving return data, and by the return data received；
The third sending module, for the return data received according to the forwarding of preset routed path；
Wherein, the base station Pico for receiving backhaul service is preset with the routed path for arriving evolved base station eNodeB, and
The eNodeB and Pico for receiving backhaul service is previously provided with for providing passback resource for the adjacent base station Pico
Dedicated antenna, dedicated channel and dedicated frequency spectrum.
29. the base station relaying Pico according to claim 28, which is characterized in that also further wrap the base station relaying Pico
It includes: third synchronization module；
The third synchronization module, for receiving a pre-set time cycle and time point, and and evolved base station
ENodeB synchronizes the time cycle and time point, and the time cycle after synchronizing and time point are sent to the third and sent
Module and third receiving module；
The third receiving module, be also used to according to after synchronizing time cycle and time point receive return data；
The third sending module, be also used to according to after synchronizing time cycle and the received passback number of time point forwarding
According to.
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| CN105830499B (en) | 2014-05-26 | 2019-06-11 | 华为技术有限公司 | A kind of method of wireless backhaul, mobile terminal and system |
| WO2015180181A1 (en) * | 2014-05-30 | 2015-12-03 | 华为技术有限公司 | Data transmission method and base station |
| CN108521891B (en) * | 2018-04-24 | 2022-02-22 | 北京小米移动软件有限公司 | Wireless backhaul connection method and apparatus |
| EP3780668B1 (en) | 2018-04-24 | 2023-12-27 | Beijing Xiaomi Mobile Software Co., Ltd. | Wireless backhaul connection method and device |
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| CN101379772A (en) * | 2006-03-07 | 2009-03-04 | 英特尔公司 | OFDMA resource allocation in multi-hop wireless mesh networks |
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