CN107949048A - Dispatching method and system based on cloud Radio Access Network - Google Patents
Dispatching method and system based on cloud Radio Access Network Download PDFInfo
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- CN107949048A CN107949048A CN201711002286.7A CN201711002286A CN107949048A CN 107949048 A CN107949048 A CN 107949048A CN 201711002286 A CN201711002286 A CN 201711002286A CN 107949048 A CN107949048 A CN 107949048A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/18—TPC being performed according to specific parameters
- H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
- H04W52/245—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters taking into account received signal strength
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/80—Circuit arrangements or systems for wireless supply or distribution of electric power involving the exchange of data, concerning supply or distribution of electric power, between transmitting devices and receiving devices
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
- H04W72/542—Allocation or scheduling criteria for wireless resources based on quality criteria using measured or perceived quality
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- Computer Networks & Wireless Communication (AREA)
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Abstract
The invention discloses a kind of dispatching method and system based on cloud Radio Access Network, the cloud Radio Access Network includes chargeable wireless remote radio frequency unit, wherein, the duration of charge cycle includes the sum of multiple durations user's dispatching cycle, including：Receive the switching pairing request reported by wireless remote radio frequency unit and the signal strength information periodically reported；Judge whether first signal strength information and switching pairing request meet the first pairing criterion；If meeting the first pairing criterion, chargeable wireless remote radio frequency unit is matched for the user again.The present invention adds chargeable wireless remote radio frequency unit in cloud Radio Access Network, reduce cost, and the duration of charge cycle is included to the duration of multiple user's dispatching cycles, and in each dispatching cycle, chargeable wireless remote radio frequency unit changes the working status of itself according to self electric quantity grade and with the signal strength of user, with preferably service user.
Description
Technical field
The present invention relates to Radio Access Network technical field, more particularly to a kind of dispatching party based on cloud Radio Access Network
Method and system.
Background technology
The low cost that is faced for Radio Access Network in recent years, high power capacity requirement, China Mobile in 2009 in the industry cycle
Cloud Radio Access Network (C-RAN) is proposed first, and C-RAN is separated into traditional base station radio remote end-fire closer to the user
Frequency unit (RRH, Remote Radio Head), and baseband processing unit (BBU, the Building Base concentrated in together
band Unit).RRH has Anneta module, is widely arranged in a network as front radio-frequency unit.Multiple BBU are concentrated
Together, extensive signal processing in real time is carried out by cloud computing platform, so as to fulfill the centralized management of BBU ponds and distribution network thing
Manage resource.The networking spectrum efficiency of real network can be substantially improved in this network architecture, and reduces energy expenditure.
Large number of RRH costs are low in C-RAN, small, energy consumption is low, are advantageously implemented intensive cloth station, improve covering
And access performance.Under the C-RAN frameworks proposed at present, RRH is generally transmitted by optical fiber and BBU ponds into row information, and by power grid
Power supply.In this case, the intensive arrangement of RRH means large scale deployment fiber optic network and power line network, but optical fiber
Higher cost constrains the transmission range of large-scale optical-fiber network, while on remote districts or densely populated place, the ground of planning complexity
Area arranges that extensive power line network is also and unrealistic.
Chargeable RRH mainly supports the work of itself by way of energy acquisition, without accessing power grid, and using wireless
Link is connected with BBU ponds.Limited yet with the efficiency of current energy acquisition technology, chargeable RRH charges the time it takes
It is still longer compared to the time of work.
The content of the invention
It is contemplated that one of technical problem in above-mentioned correlation technique is solved at least to a certain extent.
For this reason, an object of the present invention is to provide a kind of dispatching method based on cloud Radio Access Network.This is based on
The dispatching method of cloud Radio Access Network adds chargeable wireless remote radio frequency unit in cloud Radio Access Network, reduces into
Originally, and by the duration of charge cycle include the duration of multiple user's dispatching cycles, and in each dispatching cycle, chargeable nothing
Line remote radio unit (RRU) changes the working status of itself according to self electric quantity grade and with the signal strength of user, preferably to take
Be engaged in user.
It is another object of the present invention to propose a kind of scheduling system based on cloud Radio Access Network.
To achieve these goals, an aspect of of the present present invention discloses a kind of dispatching party based on cloud Radio Access Network
Method, the cloud Radio Access Network include chargeable wireless remote radio frequency unit, wherein, the duration of charge cycle is including multiple
The sum of user's duration dispatching cycle, including：Receive in the switching pairing request and periodicity reported by wireless remote radio frequency unit
The signal strength information of report, wherein, the signal strength information is included between chargeable wireless remote radio frequency unit and user
Signal strength and the user chargeable wireless remote radio frequency unit adjacent with the user between signal strength；Sentence
Whether first signal strength information and the switching pairing request of breaking meet the first pairing criterion；If meet first pairing
Criterion, then match chargeable wireless remote radio frequency unit for the user again.
Dispatching method according to the present invention based on cloud Radio Access Network, adds chargeable in cloud Radio Access Network
Wireless remote radio frequency unit, reduce cost, and the duration of charge cycle is included to the duration of multiple user's dispatching cycles, and
In each dispatching cycle, chargeable wireless remote radio frequency unit changes according to self electric quantity grade and with the signal strength of user
The working status of itself, with preferably service user.
In addition, the dispatching method according to the above embodiment of the present invention based on cloud Radio Access Network can also have it is as follows
Additional technical characteristic：
Further, the switching pairing request is the letter between the chargeable wireless remote radio frequency unit and user
Number intensity is less than the first predetermined threshold value.
Further, it is described pairing criterion for judge with user pairing the chargeable wireless remote radio frequency unit of target it
Between signal strength information whether exceed the user pairing current chargeable wireless remote radio frequency unit between letter
Number strength information, and judge whether the chargeable wireless remote radio frequency unit of target of user's pairing has enough resource clothes
Be engaged in the user.
Further, further include：Receive the electricity of chargeable wireless remote radio frequency unit transmission of non-charged state not
Sufficient information；If receiving the not enough power supply information, by the rechargeable wireless remote radio unit (RRU) of the non-charged state
Charged state is divided into, and the switching of the user to be matched with the rechargeable wireless remote radio unit (RRU) of the non-charged state is matched somebody with somebody
It is right.
Further, further include：Whether detection signal strength information is less than the second predetermined threshold value；If it is less, inspection
Survey the charged state of the chargeable wireless remote radio frequency unit adjacent with the user；If there is described in non-charged state
Rechargeable wireless remote radio unit (RRU), then select the rechargeable wireless remote radio unit (RRU) of non-charged state and the user
Matched；If there is no the institute of the rechargeable wireless remote radio unit (RRU) of non-charged state, then selection charged state
Rechargeable wireless remote radio unit (RRU) is stated to be matched with the user.
Further, the rechargeable wireless remote radio unit (RRU) of the charged state is matched with the user
Process, including：The chargeable wireless remote radio frequency unit of pair charged state adjacent with user sends call instruction；If connect
Receive the charge level and signal of the chargeable wireless remote radio frequency unit of the adjacent chargeable charged state of the user
Strength information, then call shape by the chargeable wireless remote radio frequency unit of the adjacent charged state of the user labeled as interim
State；Detection is marked as calling the charge level and letter of the chargeable wireless remote radio frequency unit of the charged state of state temporarily
Whether number strength information meets the second pairing criterion；If it is satisfied, then the chargeable nothing by the user and the charged state
Line remote radio unit (RRU) is matched.
Further, the second pairing criterion is judgement and the chargeable wireless remote of the charged state of user's pairing
Whether the signal strength information between radio frequency unit exceedes the current chargeable wireless remote radio frequency list with user pairing
Signal strength information between member, and judge the chargeable wireless remote radio frequency with the target charge state of user's pairing
Whether the charge level of unit is higher than the 3rd pre-determined threshold grade.
Further, further include：Receive electricity of chargeable wireless remote radio frequency unit being in charge cycle etc.
Level information；According to the charge level information, the chargeable wireless remote radio frequency unit is periodically divided into charging
State and non-charged state.
Further, further include：Monitor charge cycle and the dispatching cycle of the chargeable wireless remote radio frequency unit.
Another aspect of the present invention discloses a kind of scheduling system based on cloud Radio Access Network, the cloud wireless access
Network includes chargeable wireless remote radio frequency unit, wherein, the duration of charge cycle includes multiple durations user's dispatching cycle
The sum of, including：What receiving module, the switching pairing request reported for reception by wireless remote radio frequency unit and periodicity reported
Signal strength information, wherein, the signal strength information includes the letter between chargeable wireless remote radio frequency unit and user
Signal strength between number intensity and the user chargeable wireless remote radio frequency unit adjacent with the user；Judge mould
Block, for judging whether first signal strength information and switching pairing request meet the first pairing criterion；Scheduler module, is used
If in meeting the first pairing criterion, chargeable wireless remote radio frequency unit is matched for the user again.
Scheduling system based on cloud Radio Access Network according to the present invention, adds chargeable in cloud Radio Access Network
Wireless remote radio frequency unit, reduce cost, and the duration of charge cycle is included to the duration of multiple user's dispatching cycles, and
In each dispatching cycle, chargeable wireless remote radio frequency unit changes according to self electric quantity grade and with the signal strength of user
The working status of itself, with preferably service user.
In addition, the scheduling system according to the above embodiment of the present invention based on cloud Radio Access Network can also have it is as follows
Additional technical characteristic：
Further, the switching pairing request is the letter between the chargeable wireless remote radio frequency unit and user
Number intensity is less than the first predetermined threshold value.
Further, it is described pairing criterion for judge with user pairing the chargeable wireless remote radio frequency unit of target it
Between signal strength information whether exceed the user pairing current chargeable wireless remote radio frequency unit between letter
Number strength information, and judge whether the chargeable wireless remote radio frequency unit of target of user's pairing has enough resource clothes
Be engaged in the user.
Further, receiving module further includes：The chargeable wireless remote radio frequency unit for receiving non-charged state is sent
Not enough power supply information；If receiving the not enough power supply information, by the rechargeable wireless distal end of the non-charged state
Radio frequency unit is divided into charged state, and the user to be matched with the rechargeable wireless remote radio unit (RRU) of the non-charged state
Switching pairing.
Further, further include：Detection module, for detecting whether signal strength information is less than the second predetermined threshold value；
If it is less, detect the charged state of the chargeable wireless remote radio frequency unit adjacent with the user；Scheduler module, also
For the rechargeable wireless remote radio unit (RRU) if there is non-charged state, then the described of non-charged state is selected to fill
Electric wireless remote radio frequency unit is matched with the user；If there is no the rechargeable wireless distal end of non-charged state
Radio frequency unit, then select the rechargeable wireless remote radio unit (RRU) of charged state to be matched with the user.
Further, the rechargeable wireless remote radio unit (RRU) of the charged state is matched with the user
Process, including：The chargeable wireless remote radio frequency unit of pair charged state adjacent with user sends call instruction；If connect
Receive the charge level and signal of the chargeable wireless remote radio frequency unit of the adjacent chargeable charged state of the user
Strength information, then call shape by the chargeable wireless remote radio frequency unit of the adjacent charged state of the user labeled as interim
State；Detection is marked as calling the charge level and letter of the chargeable wireless remote radio frequency unit of the charged state of state temporarily
Whether number strength information meets the second pairing criterion；If it is satisfied, then the chargeable nothing by the user and the charged state
Line remote radio unit (RRU) is matched.
Further, the second pairing criterion is judgement and the chargeable wireless remote of the charged state of user's pairing
Whether the signal strength information between radio frequency unit exceedes the current chargeable wireless remote radio frequency list with user pairing
Signal strength information between member, and judge the chargeable wireless remote radio frequency with the target charge state of user's pairing
Whether the charge level of unit is higher than the 3rd pre-determined threshold grade.
Further, further include：Receiving module is additionally operable to receive the chargeable radio remote end-fire being in charge cycle
The charge level information of frequency unit；Division module, for according to the charge level information, periodically described chargeable
Wireless remote radio frequency unit is divided into charged state and non-charged state.
Further, further include：Monitoring modular, for monitoring the charging week of the chargeable wireless remote radio frequency unit
Phase and dispatching cycle.
The additional aspect and advantage of the present invention will be set forth in part in the description, and will partly become from the following description
Obtain substantially, or recognized by the practice of the present invention.
Brief description of the drawings
The above-mentioned and/or additional aspect and advantage of the present invention will become in the description from combination accompanying drawings below to embodiment
Substantially and it is readily appreciated that, wherein：
Fig. 1 is the flow chart of the dispatching method according to an embodiment of the invention based on cloud Radio Access Network；
Fig. 2 is Radio Access Network Organization Chart according to an embodiment of the invention；
Fig. 3 is the working status transfer schematic diagram of chargeable RRH according to an embodiment of the invention；
Fig. 4 is the signaling friendship that the chargeable RRH of non-charged state according to an embodiment of the invention carries out pairing switching
Mutual schematic diagram；
Fig. 5 is that chargeable RRH charge cycles according to an embodiment of the invention show with event triggering dispatching cycle node
It is intended to；
Fig. 6 is the flow chart of the dispatching method in accordance with another embodiment of the present invention based on cloud Radio Access Network；
Fig. 7 is the Signalling exchange that the chargeable RRH of charged state according to an embodiment of the invention carries out pairing switching
Schematic diagram；
Fig. 8 is the structure chart of the scheduling system of cloud Radio Access Network according to an embodiment of the invention.
Embodiment
The embodiment of the present invention is described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning to end
Same or similar label represents same or similar element or has the function of same or like element.Below with reference to attached
The embodiment of figure description is exemplary, and is only used for explaining the present invention, and is not considered as limiting the invention.
Below in conjunction with the attached drawing description dispatching method and system based on cloud Radio Access Network according to embodiments of the present invention.
Fig. 1 is the flow chart of the dispatching method according to an embodiment of the invention based on cloud Radio Access Network.
Before this method is carried out, there are two kinds of wireless access point, including chargeable nothing in cloud Radio Access Network first
Line remote radio unit (RRU), i.e., the chargeable RRH to be powered by energy acquisition technology, and not chargeable wireless remote radio frequency unit,
I.e. common RRH, both RRH work in coordination provides access service to the user jointly.Wherein, cloud Radio Access Network further includes
Baseband processing unit (BBU).
Wherein, before being scheduled, further include：Receive the chargeable wireless remote radio frequency list being in charge cycle
The charge level information of member；According to charge level information, periodically chargeable wireless remote radio frequency unit is divided into and is filled
Electricity condition and non-charged state.
With reference to shown in Fig. 5, in the initial time of each charge cycle, all chargeable RRH send out battery level information
Give BBU ponds.Controller in BBU ponds is responsible for the traffic control of chargeable RRH.Charge level is less than R1Chargeable RRH
Charged state will be in.
With reference to shown in Fig. 2 and Fig. 3, chargeable RRH is transmitted by wireless backhaul link and BBU ponds into row information, it
Working status is divided into charged state and non-charged state.The wireless signal that BBU ponds are launched is converted into by the RRH in charged state
Energy stores are got up, and cannot provide access service to the user in the process.And the chargeable RRH in non-charged state can be with
By system call, access service is provided to the user.Scheduled RRH is in transmission state, and the RRH not being scheduled is in the free time
State.Wherein, battery level information is sent to BBU ponds in the initial time of each charge cycle, all chargeable RRH.BBU
Controller in pond is responsible for the traffic control of chargeable RRH.Charge level is less than R1Chargeable RRH will be in charged state.
Since the efficiency of current energy acquisition technology limits, chargeable RRH charges the time it takes when being to provide service
Between several times., can present invention provide that being used as dispatching cycle with reference to shown in Fig. 5 in order to more flexibly and effectively dispatch chargeable RRH
Charge RRH transmission states and the minimum length in time of idle condition, and charge cycle is as chargeable RRH charged states and non-charging
The minimum length in time of state.The duration of one charge cycle contains the sum of multiple durations dispatching cycle, a dispatching cycle
Multiple transmission time slots are contained again.
The duration of dispatching cycle and charge cycle is certain in the present invention, and all chargeable RRH and controller have interior
The synchronised clock put, when charge cycle starts, all chargeable RRH send the charge level letter of itself from controller is sent to
Breath, controller can be less than R after receiving corresponding information to charge level1RRH send " charging instruction " information, RRH receives information
" starting to charge up " information is sent to controller afterwards, and opens charge mode.Controller is marked as filling after receiving return information
Electricity condition, remaining RRH are labeled as non-charged state.
As shown in Figure 1, the dispatching method of cloud Radio Access Network according to an embodiment of the invention, specifically includes：
S110：Receive the switching pairing request reported by wireless remote radio frequency unit and the signal strength periodically reported letter
Breath, wherein, signal strength information includes the signal strength and the use between chargeable wireless remote radio frequency unit and user
Signal strength between the chargeable wireless remote radio frequency unit adjacent with the user of family.The signal periodically reported is strong
Degree, i.e., in charge cycle, each dispatching cycle, the signal strength information between user that chargeable RRH is reported.
Further, switching pairing request is that the signal strength between chargeable wireless remote radio frequency unit and user is low
In the first predetermined threshold value.
Specifically, user monitors the letter of the chargeable RRH currently matched and adjacent chargeable RRH during idle time
Number intensity, and initial time of the average signal strength in each dispatching cycle is sent to the chargeable RRH currently matched, by
The chargeable RRH currently matched judges whether to initiate " switching pairing " request to controller.Found when matching chargeable RRH
User received signal intensity is less than threshold T1When, send " switching is matched " request to controller and corresponding user receives signal
Strength information.
S120：Judge whether the first signal strength information and switching pairing request meet the first pairing criterion.
Wherein, the first pairing criterion is between judgement and the chargeable wireless remote radio frequency unit of target of user's pairing
The signal strength whether signal strength information exceedes between the current chargeable wireless remote radio frequency unit of user's pairing is believed
Breath, and judge whether the chargeable wireless remote radio frequency unit of target of user's pairing has user described in enough resource services.
Wherein, mean will be with for the signal strength information between the chargeable wireless remote radio frequency unit of target of user's pairing
Signal strength information between the chargeable wireless remote radio frequency unit of user's pairing, the chargeable wireless remote of this target
Radio frequency unit is obtained in the wireless remote radio frequency unit adjacent with user.
Specifically, controller judges whether to match again according to certain criterion.Controller is preferably matched somebody with somebody again
Can be to criterion：1st, the signal strength of the chargeable RRH newly matched exceedes current pairing RRH and is higher than a scope；2nd, newly match somebody with somebody
To chargeable RRH also have the new user of enough resource services.New pairing RRH if meeting above-mentioned condition exists, and just opens
Starting weight newly matches.RRH are optionally newly matched if multiple, select one of wherein signal strength maximum.
S130：If meeting the first pairing criterion, chargeable wireless remote radio frequency unit is matched for user again.
With reference to shown in Fig. 4, the process of preferable pairing switching can be：First, controller is sent out to the chargeable RRH of target
" matched order " information, the chargeable RRH of target is sent to controller to send " pairing confirm " information after receiving.Then, controller
" switching pairing " information is sent to current RRH, current RRH receives rear line and sends " switching pairing " information, and user receives letter
After breath, " switching is completed " information is sent to the chargeable RRH of target, after the chargeable RRH of target receives the information of user, to control
Device processed sends " pairing is completed " information, and the chargeable RRH of target for completing pairing is labeled as transmission state by controller.Treat again
After the completion of pairing, controller sends " release and match " order to former RRH, and former RRH is discharged after the resource of the user's occupancy to control
Device sends " release and complete " signal, and the RRH that pairing releases is labeled as idle condition by controller, completes whole pairing and switched
Journey.
In certain embodiments, further include：Receive the chargeable wireless remote radio frequency unit transmission of non-charged state
Not enough power supply information；If receiving not enough power supply information, the rechargeable wireless remote radio unit (RRU) of non-charged state is drawn
It is divided into charged state, and the user to be matched with the rechargeable wireless remote radio unit (RRU) of non-charged state switches pairing.
Specifically, in any time of user's dispatching cycle, if the chargeable RRH in non-charged state has found itself
Charge level is less than threshold value R2(R2＜ R1), then the chargeable RRH in non-charged state sends " not enough power supply " to controller
Information, controller can be the RRH of relative users pairing signal maximum intensity again after receiving, and start to switch pairing process.
Controller sends " matched order " information to new RRH first, and new RRH is sent " pairing confirms " after receiving to controller
Information.Then, controller sends " switching is matched " information to current RRH, and current RRH receives rear line and sends " switching pairing "
Information, after user receives information, sends " switching is completed " information, after new RRH receives the information of user, to controller to new RRH
" pairing is completed " information is sent, the new RRH for completing pairing is labeled as transmission state by controller.Last controller is sent out to former RRH
Send " charging instruction " information, RRH receive after to controller send " starting to charge up ", and stop detect user signal strength, into
Enter charge mode, controller is connected to after the information of RRH returns and it is labeled as charged state.
In certain embodiments, with reference to shown in Fig. 6, further include：
S140：Whether detection signal strength information is less than the second predetermined threshold value；
S150：If it is less, detect the charged state of the chargeable wireless remote radio frequency unit adjacent with user.
S160：If there is the rechargeable wireless remote radio unit (RRU) of non-charged state, then select non-charged state can
Charging wireless remote radio frequency unit is matched with user.
S170：If there is no the rechargeable wireless remote radio unit (RRU) of non-charged state, then select charged state can
Charging wireless remote radio frequency unit is matched with user.
Step S170 is specifically included：Chargeable wireless remote radio frequency unit transmission pair the charged state adjacent with user
Call instruction；If receive the charge level of the chargeable wireless remote radio frequency unit of the adjacent charged state of the user
And signal strength information, then by the chargeable wireless remote radio frequency unit of the adjacent charged state of the user labeled as interim
Calling state；Detection is marked as calling electricity of chargeable wireless remote radio frequency unit of charged state of state etc. temporarily
Whether level and signal strength information meet the second pairing criterion；If it is satisfied, then by user and the rechargeable wireless of charged state
Remote radio unit (RRU) is matched.
Wherein, the second pairing criterion is judgement and the chargeable wireless remote radio frequency of the target charge state of user's pairing
Whether the signal strength information between unit exceedes between the current chargeable wireless remote radio frequency unit of user's pairing
Signal strength information, and electricity of chargeable wireless remote radio frequency unit of target charge state of judgement and user's pairing etc.
Whether level is higher than the 3rd pre-determined threshold grade.
Specifically, cloud Radio Access Network is still there may be the relatively low user of received signal strength, so, controller
Check in cloud Radio Access Network and be less than threshold T with the presence or absence of signal strength2(wherein, the second predetermined threshold value is less than first
Predetermined threshold value, T2<T1) user, due to being not present around this kind of user meet that the non-charged state RRH of pairing can be switched
When, controller needs to select suitable charging RRH to be matched for this kind of user.
Specifically, controller sends " interim to call " instruction to around the user in charged state RRH, in charging shape
The RRH of state to controller sends " call confirm " information after receiving, and send " request pairing " signal and self electric quantity grade to
The user, user send " monitoring report " and self electric quantity of these charged states RRH in next time slot to controller immediately
Grade.Controller is by these RRH labeled as " interim to call " state.Controller judges whether to again according to certain criterion
Match and matched again with the RRH of which " interim to call ".
Controller preferable first matches criterion：1st, the signal strength of the chargeable RRH newly matched exceedes current
It is higher than a scope with the signal strength of the RRH of the user's pairing；2nd, newly pairing RRH electricity is higher than threshold value R3.If full
The new pairing RRH of sufficient above-mentioned condition exists, and controller can start to match again.If there is multiple optional RRH, then select
Select wherein signal strength maximum one.
With reference to shown in Fig. 7, the preferable pairing process that switches can be：Controller is sent " interim pairing " to new RRH first
Instruction, new RRH to controller send " pairing confirm " information after receiving.Then, controller is sent " switching is matched " to current RRH
Information, current RRH receive rear line and send " switching pairing " information, after user receives information, send and " switched to new RRH
Into " information, after new RRH receives the information of user, " pairing is completed " information is sent to controller, controller will complete the new of pairing
RRH is labeled as " occasional transmission " state.Treat after the completion of matching again, controller sends " release and match " order to former RRH, former
RRH discharges sends " release complete " signal after the resource of the user's occupancy to controller, and controller marks the RRH for releasing pairing
For idle condition, while controller sends " return and charge " instruction to remaining unpaired " interim to call " state RRH, " interim
The RRH of calling " state receives backward controller and returns to " starting to charge up " information, and returns to charged state, after controller receives,
These RRH are labeled as charged state.
Further, after current dispatching cycle, the RRH in " occasional transmission " state, which returns to charged state, to be continued to fill
Electricity.
If charged state RRH and user's successful matching, after this dispatching cycle, which will return to charged state.
Specifically, in " occasional transmission " state RRH complete a dispatching cycle transmission work after, in next dispatching cycle
" release and match " request and self electric quantity information are sent to controller during beginning, after controller receives, is worked as first according to the RRH
Preceding electricity judges whether to be necessary to carry out pairing switching.Then, user can be matched according to it with or without necessity, controller
The monitoring information that surrounding RRH is sent judges whether the new RRH for meeting pairing criterion, if it is present pairing switching is initiated,
Former RRH reenters charged state, and new RRH enters transmission state；If there is no the new RRH for the condition that meets, and it is necessary
Carrying out pairing switching, then the new RRH of controller selection signal strength maximum matches for user, and former RRH reenters charged state,
New RRH enters transmission state；If It is not necessary to switch pairing, and the new RRH for meeting pairing criterion is not present, then controller
" maintaining pairing " instruction is sent to charging RRH, which continues to keep transmission state.
Dispatching method according to the present invention based on cloud Radio Access Network, adds chargeable in cloud Radio Access Network
Wireless remote radio frequency unit, reduce cost, and the duration of charge cycle is included to the duration of multiple user's dispatching cycles, and
In each dispatching cycle, chargeable wireless remote radio frequency unit changes according to self electric quantity grade and with the signal strength of user
The working status of itself, with preferably service user.
As an example, controller returns to the unpaired message of chargeable RRH and user after traffic control is completed
To the module for being responsible for information transmission in system, system carries out the works such as design and the power distribution of precoding according to the information of return
Make.
Specifically, controller receives signal according to chargeable RRH " switching is matched " requests sent and the user reported
Intensity, pairing switching is judged whether to according to certain criterion, and the result of judgement is returned to and is responsible for transmission in BBU ponds
Module.First time slot of the system in dispatching cycle completes the Signalling exchange between chargeable RRH, notifies them following
The state in which and user serviced dispatching cycle.Then system completes information transmission work, control in ensuing time slot
Device processed persistently monitors the request of chargeable RRH.
In certain embodiments, further include：Monitor charge cycle and the scheduling week of chargeable wireless remote radio frequency unit
Phase.
Specifically, chargeable RRH judge current dispatching cycle whether be this charge cycle last scheduling week
Phase, if so, after active user dispatching cycle, starts new charge cycle, if not, starting next scheduling week
Phase.So, by all built-in synchronised clock (that is, playing the role of monitoring) of all chargeable RRH and controller, chargeable RRH
At the end of each dispatching cycle, judge current dispatching cycle whether be this charge cycle last dispatching cycle.Such as
Fruit is then to detect self electric quantity and be reported to controller.If not, start next dispatching cycle.
Fig. 8 is the structure chart of the scheduling system according to an embodiment of the invention based on cloud Radio Access Network.
As shown in figure 8, the scheduling system 200 based on cloud Radio Access Network of one embodiment of the invention, cloud wirelessly connects
Entering network includes chargeable wireless remote radio frequency unit, wherein, when the duration of charge cycle includes multiple user's dispatching cycles
It is the sum of long, including：Receiving module 210, judgment module 220 and scheduler module 230.
Wherein, receiving module 210 is used to receive the switching pairing request and periodicity reported by wireless remote radio frequency unit
The signal strength information reported, wherein, signal strength information is included between chargeable wireless remote radio frequency unit and user
Signal strength between signal strength and user's chargeable wireless remote radio frequency unit adjacent with user.Judgment module 220
For judging whether the first signal strength information and switching pairing request meet the first pairing criterion.Scheduler module 230 is used for such as
Fruit meets the first pairing criterion, then matches chargeable wireless remote radio frequency unit again for user.
Scheduling system based on cloud Radio Access Network according to the present invention, adds chargeable in cloud Radio Access Network
Wireless remote radio frequency unit, reduce cost, and the duration of charge cycle is included to the duration of multiple user's dispatching cycles, and
In each dispatching cycle, chargeable wireless remote radio frequency unit changes according to self electric quantity grade and with the signal strength of user
The working status of itself, with preferably service user.
Further, switching pairing request is that the signal strength between chargeable wireless remote radio frequency unit and user is low
In the first predetermined threshold value.
Further, criterion is matched to judge between the chargeable wireless remote radio frequency unit of target of user's pairing
The signal strength whether signal strength information exceedes between the current chargeable wireless remote radio frequency unit of user's pairing is believed
Breath, and judge whether the chargeable wireless remote radio frequency unit of target of user's pairing has user described in enough resource services.
Further, receiving module 210 further includes：Receive the chargeable wireless remote radio frequency unit hair of non-charged state
The not enough power supply information sent；If receiving the not enough power supply information, the rechargeable wireless distal end of non-charged state is penetrated
Frequency dividing elements are charged state, and the switching of the user to be matched with the rechargeable wireless remote radio unit (RRU) of non-charged state is matched somebody with somebody
It is right.
Further, further include：Detection module, for detecting whether signal strength information is less than the second predetermined threshold value；
If it is less, detect the charged state of the chargeable wireless remote radio frequency unit adjacent with user；Scheduler module 230, also
For the rechargeable wireless remote radio unit (RRU) if there is non-charged state, then the chargeable nothing of non-charged state is selected
Line remote radio unit (RRU) is matched with user；If there is no the rechargeable wireless remote radio unit (RRU) of non-charged state, then
The rechargeable wireless remote radio unit (RRU) of selection charged state is matched with user.
Further, the process that the rechargeable wireless remote radio unit (RRU) of charged state is matched with user, including：It is right
The chargeable wireless remote radio frequency unit of the charged state adjacent with user sends call instruction；If it is adjacent to receive user
Chargeable charged state chargeable wireless remote radio frequency unit charge level and signal strength information, then by user
The chargeable wireless remote radio frequency unit of adjacent charged state calls state labeled as interim；Detection is marked as adjusting temporarily
Whether meet with the charge level and signal strength information of the chargeable wireless remote radio frequency unit of the charged state of state
Two pairing criterions；If it is satisfied, then the rechargeable wireless remote radio unit (RRU) of user and charged state is matched.
Further, the second pairing criterion is judgement and the chargeable wireless remote radio frequency of the charged state of user's pairing
Whether the signal strength information between unit exceedes between the current chargeable wireless remote radio frequency unit of user's pairing
Signal strength information, and electricity of chargeable wireless remote radio frequency unit of target charge state of judgement and user's pairing etc.
Whether level is higher than the 3rd pre-determined threshold grade.
Further, further include：Receiving module 210 is additionally operable to receive the chargeable wireless remote being in charge cycle
The charge level information of radio frequency unit；Division module, for according to charge level information, periodically chargeable radio remote
End-fire frequency dividing elements are charged state and non-charged state.
Further, further include：Monitoring modular, for monitor chargeable wireless remote radio frequency unit charge cycle and
Dispatching cycle.For example, clock.
It should be noted that the specific implementation of the scheduling system based on cloud Radio Access Network of the embodiment of the present invention
It is similar with the specific implementation of the dispatching method based on cloud Radio Access Network of the embodiment of the present invention, specifically refer to and be based on
The description of the dispatching method part of cloud Radio Access Network, in order to reduce redundancy, does not repeat herein.
In addition, term " first ", " second " are only used for description purpose, and it is not intended that instruction or hint relative importance
Or the implicit quantity for indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can be expressed or
Implicitly include at least one this feature.In the description of the present invention, " multiple " are meant that at least two, such as two, three
It is a etc., unless otherwise specifically defined.
In the present invention, unless otherwise clearly defined and limited, term " installation ", " connected ", " connection ", " fixation " etc.
Term should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or integrally；Can be that machinery connects
Connect or be electrically connected；It can be directly connected, can also be indirectly connected by intermediary, can be in two elements
The connection in portion or the interaction relationship of two elements, unless otherwise restricted clearly.For those of ordinary skill in the art
For, the concrete meaning of above-mentioned term in the present invention can be understood as the case may be.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or the spy for combining the embodiment or example description
Point is contained at least one embodiment of the present invention or example.In the present specification, schematic expression of the above terms is not
It must be directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be in office
Combined in an appropriate manner in one or more embodiments or example.In addition, without conflicting with each other, the skill of this area
Art personnel can be tied the different embodiments or example described in this specification and different embodiments or exemplary feature
Close and combine.
Although the embodiment of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is impossible to limitation of the present invention is interpreted as, those of ordinary skill in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, changes, replacing and modification.
Claims (10)
1. a kind of dispatching method based on cloud Radio Access Network, it is characterised in that the cloud Radio Access Network includes filling
The wireless remote radio frequency unit of electricity, wherein, the duration of charge cycle includes the sum of multiple durations user's dispatching cycle, including：
The switching pairing request reported by wireless remote radio frequency unit and the signal strength information periodically reported are received, wherein,
The signal strength information include signal strength between chargeable wireless remote radio frequency unit and user and the user with
Signal strength between the adjacent chargeable wireless remote radio frequency unit of the user；
Judge whether first signal strength information and switching pairing request meet the first pairing criterion；
If meeting the first pairing criterion, chargeable wireless remote radio frequency unit is matched for the user again.
2. the dispatching method according to claim 1 based on cloud Radio Access Network, it is characterised in that the switching pairing
Request is that the signal strength between the chargeable wireless remote radio frequency unit and user is less than the first predetermined threshold value.
3. the dispatching method according to claim 1 based on cloud Radio Access Network, it is characterised in that first pairing
Whether signal strength information of the criterion between judgement and the chargeable wireless remote radio frequency unit of target of user's pairing exceedes
Signal strength information between the current chargeable wireless remote radio frequency unit of user pairing, and judge the user
Whether the chargeable wireless remote radio frequency unit of target of pairing has user described in enough resource services.
4. the dispatching method according to claim 1 based on cloud Radio Access Network, it is characterised in that further include：
Receive the not enough power supply information that the chargeable wireless remote radio frequency unit of non-charged state is sent；
If receiving the not enough power supply information, the rechargeable wireless remote radio unit (RRU) of the non-charged state is divided
For charged state, and the user to be matched with the rechargeable wireless remote radio unit (RRU) of the non-charged state switches and matches.
5. the dispatching method according to claim 1 based on cloud Radio Access Network, it is characterised in that further include：
Whether detection signal strength information is less than the second predetermined threshold value；
If it is less, detect the charged state of the chargeable wireless remote radio frequency unit adjacent with the user；
If there is the rechargeable wireless remote radio unit (RRU) of non-charged state, then the described of non-charged state is selected to fill
Electric wireless remote radio frequency unit is matched with the user；
If there is no the rechargeable wireless remote radio unit (RRU) of non-charged state, then the described of charged state is selected to fill
Electric wireless remote radio frequency unit is matched with the user.
6. the dispatching method according to claim 5 based on cloud Radio Access Network, it is characterised in that the charged state
The process matched of the rechargeable wireless remote radio unit (RRU) and the user, including：
The chargeable wireless remote radio frequency unit of pair charged state adjacent with user sends call instruction；
If receive the charge level and letter of the chargeable wireless remote radio frequency unit of the adjacent charged state of the user
Number strength information, then call the chargeable wireless remote radio frequency unit of the adjacent charged state of the user labeled as interim
State；
Detection be marked as temporarily call state charged state chargeable wireless remote radio frequency unit charge level and
Whether signal strength information meets the second pairing criterion；
If it is satisfied, then the user and the rechargeable wireless remote radio unit (RRU) of the charged state are matched.
7. the dispatching method according to claim 6 based on cloud Radio Access Network, it is characterised in that second pairing
Signal strength of the criterion between the chargeable wireless remote radio frequency unit for the target charge state for judging to match user is believed
Whether breath exceedes the signal strength information between the current chargeable wireless remote radio frequency unit of user pairing, and sentences
It is disconnected described with the charge level of the chargeable wireless remote radio frequency unit of the target charge state of user's pairing whether higher than the
Three pre-determined threshold grades.
8. the dispatching method according to claim 1 based on cloud Radio Access Network, it is characterised in that further include：
Receive the charge level information for the chargeable wireless remote radio frequency unit being in charge cycle；
According to the charge level information, the chargeable wireless remote radio frequency unit is periodically divided into charged state
With non-charged state.
9. the dispatching method according to claim 1 based on cloud Radio Access Network, it is characterised in that further include：Monitoring
The charge cycle of the chargeable wireless remote radio frequency unit and dispatching cycle.
10. a kind of scheduling system based on cloud Radio Access Network, it is characterised in that the cloud Radio Access Network includes filling
The wireless remote radio frequency unit of electricity, wherein, the duration of charge cycle includes the sum of multiple durations user's dispatching cycle, including：
Receiving module, the signal for receiving the switching pairing request reported by wireless remote radio frequency unit and periodically reporting are strong
Information is spent, wherein, the signal strength information includes the signal strength between chargeable wireless remote radio frequency unit and user
Signal strength between the user chargeable wireless remote radio frequency unit adjacent with the user；
Judgment module, for judging whether first signal strength information and switching pairing request meet the first pairing criterion；
Scheduler module, if for meeting the first pairing criterion, matches chargeable radio remote for the user again
Hold radio frequency unit.
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| CN201711002286.7A CN107949048B (en) | 2017-10-24 | 2017-10-24 | Scheduling method and system based on cloud wireless access network |
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| CN201711002286.7A CN107949048B (en) | 2017-10-24 | 2017-10-24 | Scheduling method and system based on cloud wireless access network |
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| Publication number | Publication date |
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| CN107949048B (en) | 2020-03-27 |
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