CN107548144A - A kind of method for controlling downlink power and equipment applied to NB IoT - Google Patents
A kind of method for controlling downlink power and equipment applied to NB IoT Download PDFInfo
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Abstract
The embodiment of the invention discloses a kind of method for controlling downlink power and equipment applied to NB IoT, it is related to communication technical field, NB IoT coverage can not shortened, that is, ensure data can normal transmission while, reduce interference of the adjacent area to the terminal in cell edge.Concrete scheme is：The control information that first base station receiving terminal is sent, include signal parameter in the control information, the signal parameter includes the first RSRP and SINR；First base station judges the region residing for terminal according to the first RSRP and SINR；Region of the first base station according to residing for terminal, it is determined that distributing to the objective emission power of NB IoT frequency band.During the embodiment of the present invention can apply to the transmission power for the frequency band that NB IoT are distributed in base station control.
Description
Technical field
The present embodiments relate to communication technical field, more particularly to a kind of downlink power control side applied to NB-IoT
Method and equipment.
Background technology
Arrowband honeycomb Internet of Things (Narrow Band-Internet of Things, NB-IOT) is Internet of Things field one
Emerging technology, it has the characteristics that Large Copacity, wide covering, low-power consumption, low cost and high stability, can be good at solving to pass
The bottleneck for the Internet of Things communication technology of uniting is (for example, short-range communication technology limited coverage area, 2/3/4G long range cellular telecommunication arts
Power consumption is big, cost is high), it is one of main interconnection technique of Internet of Things.
NB-IoT covers gain with retransmission technique signal in order to increase depth covering performance, by arrowband and compares the whole world
GSM (Global System for Mobile Communication, GSM) enhances 20dB, and area coverage expands
Big 100 times, it can cover the scenes such as basement, underground garage, underground piping, meet the use such as meter reading, pipe detection
The application demand at family.
But NB-IoT depth is covered in while meeting the scene access demand such as basement, underground piping, introduce
The problem of new：This 20dB enhancing can cause area covered, form adjacent area interference, may so take Long Term Evolution
(Long Term Evolut ion, LTE) can interfere with interior resource between NB-IoT frequencies, have influence on LTE system
Performance.
Therefore, prior art is to meet basement, the requirement of underground piping even depth covering, does not consider to cover
Lid enhancing can form the situation of interference to adjacent cell.So terminal can be caused to be done in cell edge by adjacent cell base station
Disturb, so as to influence service feature.
The content of the invention
The application provides a kind of method for controlling downlink power and equipment applied to NB-IoT, can not shorten NB-IoT
Coverage, that is, ensure data can normal transmission while, reduce interference of the adjacent area to the terminal in cell edge.
To reach above-mentioned purpose, the application adopts the following technical scheme that：
The first aspect of the application, there is provided a kind of method for controlling downlink power applied to NB-IoT, this method include：The
The control information that one base station receiving terminal is sent, include signal parameter in the control information, the signal parameter includes the first ginseng
Examine signal reception power (Reference Signal Receiving Power, RSRP) and signal to noise ratio (Signal to
Interference plus Noise Ratio, SINR)；First base station is judged residing for terminal according to the first RSRP and SINR
Region；Region of the first base station according to residing for terminal, it is determined that distributing to the objective emission power of NB-IoT frequency band.
In the application, control information that first base station can be sent according to terminal judges the region residing for terminal, and according to
Region residing for terminal determines to distribute to the objective emission power of NB-IoT frequency band.Because the region residing for terminal is different, the
The objective emission power that NB-IoT frequency band is distributed in one base station is different；The terminal of first base station and different zones carries out data friendship
When mutual, using different objective emission power, NB-IoT coverage can not be shortened, that is, ensure that data can be passed normally
It is defeated；Meanwhile when terminal is in the cell edge of first base station covering, adjacent area is reduced to the dry of the terminal in cell edge
Disturb.
The second aspect of the application, there is provided a kind of first base station, the first base station include：Receiving unit, judging unit and
Determining unit.Wherein, receiving unit, for the control information of receiving terminal transmission, signal parameter is included in the control information,
The signal parameter includes the first RSRP and SINR.Judging unit, for according to the first RSRP and SINR, judging the area residing for terminal
Domain.Determining unit, for the region according to residing for terminal, it is determined that distributing to the objective emission power of NB-IoT frequency band.
It should be noted that each function list of the second aspect of the embodiment of the present invention and its various possible implementations
Member, it is to perform the descending power control applied to NB-IoT of the various optional modes of above-mentioned first aspect and first aspect
Method processed, and to the division in logic of first base station progress.Each work(of second aspect and its various possible implementations
The detailed description of energy unit and beneficial effect analysis may be referred in above-mentioned first aspect and its various possible implementations
Corresponding description and technique effect, here is omitted.
The third aspect of the application, there is provided a kind of first base station, the first base station can include：Processor, memory and
Communication interface.Wherein, memory is used to store computer executed instructions, and processor, communication interface and memory are connected by bus
Connect, when first base station is run, the computer executed instructions of computing device memory storage, so that first base station performs such as the
The method for controlling downlink power applied to NB-IoT described in the various optional modes of one side and first aspect.
The fourth aspect of the application, there is provided a kind of computer-readable recording medium, wrap in the computer-readable recording medium
Computer instruction is included, when the computer instruction is run on a computer so that the computer perform as first aspect with
And the method for controlling downlink power applied to NB-IoT described in the various optional modes of first aspect.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention.For those of ordinary skill in the art, without having to pay creative labor, may be used also
To obtain other accompanying drawings according to these accompanying drawings.
Fig. 1 is a kind of system architecture schematic diagram provided in an embodiment of the present invention；
Fig. 2 is a kind of structural representation one of first base station provided in an embodiment of the present invention；
Fig. 3 is a kind of method for controlling downlink power flow chart one applied to NB-IoT provided in an embodiment of the present invention；
Fig. 4 is a kind of method for controlling downlink power flowchart 2 applied to NB-IoT provided in an embodiment of the present invention；
Fig. 5 is a kind of method for controlling downlink power flow chart 3 applied to NB-IoT provided in an embodiment of the present invention；
Fig. 6 is a kind of method for controlling downlink power flow chart four applied to NB-IoT provided in an embodiment of the present invention；
Fig. 7 is a kind of method for controlling downlink power flow chart five applied to NB-IoT provided in an embodiment of the present invention；
Fig. 8 is a kind of method for controlling downlink power flow chart six applied to NB-IoT provided in an embodiment of the present invention；
Fig. 9 is a kind of method for controlling downlink power flow chart seven applied to NB-IoT provided in an embodiment of the present invention；
Figure 10 is a kind of method for controlling downlink power flow chart eight applied to NB-IoT provided in an embodiment of the present invention；
Figure 11 is a kind of structural representation two of first base station provided in an embodiment of the present invention；
Figure 12 is a kind of structural representation three of first base station provided in an embodiment of the present invention；
Figure 13 is a kind of structural representation four of first base station provided in an embodiment of the present invention.
Embodiment
Term " first ", " second " and " the 3rd " in the specification and claims of the embodiment of the present invention etc. is to be used for
Distinguish different objects, rather than the particular order for description object.For example, first area, second area and the 3rd region
Etc. being to be in different regions for distinguishing terminal, rather than for describing the particular order of record.
In the description of the embodiment of the present invention, unless otherwise indicated, the implication of " multiple " refers to two or more.Example
Such as, multiple processors refer to the processor for including two or more physical cores.
In addition, the term " comprising " and " having " being previously mentioned in the description of the embodiment of the present invention and their any change
Shape, it is intended that cover non-exclusive include.Such as contain the process of series of steps or module, method, system, product or
The step of equipment is not limited to list or module, but the step of do not listed including other also alternatively or module, or
Alternatively also include for these processes, method, product or equipment intrinsic other steps or module.
In describing below, in order to illustrate rather than in order to limit, it is proposed that such as particular system structure, interface, technology it
The detail of class, understand the present invention to cut thoroughly.However, it will be clear to one skilled in the art that there is no these specific
The present invention can also be realized in the other embodiments of details.In other situations, omit to well-known device, circuit and
The detailed description of method, in case unnecessary details hinders description of the invention.
Below to being related in the method for controlling downlink power provided in an embodiment of the present invention applied to NB-IoT and equipment
Some concepts illustrate.
NB-IoT：GSM and LTE is compared with the covering gain of retransmission technique signal by arrowband and enhances 20dB, is covered
Area expands 100 times, and it can cover the scenes such as basement, underground garage, underground piping, meets meter reading, pipeline inspection
The application demand of the users such as survey.
Signal to noise ratio (SNR)：Be Link State parameter in one kind, its be description signal in active ingredient and noise contribution
Proportionate relationship parameter, represented with dB.For example, signal to noise ratio numerical value is higher, link status quality is better.
First RSRP：Reference Signal Received Power of the terminal under first base station.
2nd RSRP：Reference Signal Received Power of the terminal under the second base station.
Method for controlling downlink power and equipment provided in an embodiment of the present invention applied to NB-IoT, it can apply to base station
During the transmission power for controlling the frequency band for distributing to NB-IoT.It is provided in an embodiment of the present invention to be applied to the descending of NB-IoT
Poewr control method and equipment, NB-IoT coverage can not shortened, that is, ensure data can normal transmission while,
Reduce interference of the adjacent area to the terminal in cell edge.
Fig. 1 is refer to, it illustrates a kind of downlink power control side applied to NB-IoT provided in an embodiment of the present invention
The system architecture schematic diagram that method is applied.As shown in figure 1, the system architecture can include terminal 01, first base station 02 and second
Base station 03.Wherein, the base station 03 of first base station 02 and second can carry out information exchange by X2 interface.
As shown in figure 1, cell 1 is an overlay area of first base station 02, cell 2 is a covering of the second base station 03
Region, region 3 are NB-IoT 20dB coverage enhancements region.
Exemplary, the terminal in the embodiment of the present invention is that a kind of finger provides a user voice and/or data connectivity
Equipment, there is the portable equipment of wire/wireless linkage function, or be connected to other processing equipments of radio modem.
Terminal can be communicated with one or more base stations.Terminal can be mobile terminal, as mobile phone (or for " honeycomb " electricity
Words) and with mobile terminal computer or portable, pocket, hand-held, built-in computer or it is vehicle-mounted
Mobile device, they exchange language and/or data with RAN, for example, PCS (Personal Communication
Service, PCS) phone, wireless phone, Session initiation Protocol (SIP) phone, WLL (Wireless Local
Loop, WLL) stand, the equipment such as personal digital assistant (Personal Digital Assistant, PDA), the embodiment of the present invention pair
This is not intended to be limited in any.
Exemplary, the base station in the embodiment of the present invention is that one kind is deployed in wireless access network to provide nothing for terminal
The device of line communication function.Base station can include various forms of macro base stations, micro-base station, relay station, access point etc..Using
In the system of different wireless access technologys, the title for possessing the equipment of base station functions may be different, for example, in LTE
In system, the base station (evolved NodeB, eNB or eNodeB) of referred to as evolution, in third generation mobile communications technology (The 3rd
Generation Telecommunication, 3G) in system, referred to as base station (Node B) etc..With drilling for the communication technology
Enter, " base station " this title may change.
The embodiment of the present invention provides a kind of base station, and Fig. 2 is illustrated that the structure of first base station provided in an embodiment of the present invention
Schematic diagram.As shown in Fig. 2 first base station 02 includes processor 10, memory 11, communication interface 12 and communication bus 13.
Each component parts of first base station is specifically introduced with reference to Fig. 2：
Processor 10 is the control centre of first base station 02, can be a processor or multiple treatment elements
General designation.For example, processor 10 is a central processing unit (Central Processing Unit, CPU) or spy
Determine integrated circuit (Application Specific Integrated Circuit, ASIC), or be arranged to implement this
One or more integrated circuits of inventive embodiments, such as：One or more microprocessors (Digital Signal
Processor, DSP), or, one or more field programmable gate array (Field Programmable Gate Array,
FPGA).Processor 10 utilizes various interfaces and the various pieces of the whole first base station 02 of connection.Deposited by running or performing
Software program and/or module in memory 11 are stored up, and calls the data being stored in memory 11, performs first base station
02 various functions and processing data, so as to carry out integral monitoring to first base station 02.
Optionally, in concrete implementation, as a kind of embodiment, processor 10 can include one or more CPU, example
CPU 0 and CPU 1 as shown in Figure 2.
Optionally, in the specific implementation, as a kind of embodiment, first base station 02 can include multiple processors, i.e., and
One base station 02 can include polycaryon processor.Each in these processors can be a single core processor (Single-
) or a polycaryon processor (Multi-CPU) CPU.Here processor can refer to one or more equipment, circuit,
And/or the process cores for processing data (such as computer program instructions).
Memory 11 can be used for storing software program and module, and processor 10 is stored in memory 11 by operation
Software program and module, so as to perform the various function application of first base station 02 and data processing.Memory 11 can be main
Including storing program area and storage data field, wherein, storing program area can storage program area, needed at least one function should
With program etc.；Storage data field can store uses created data etc. according to first base station 02.In addition, memory 11 can be with
It is read-only storage (Read-Only Memory, ROM) or the other kinds of static storage of static information and instruction can be stored
Equipment, random access memory (Random Access Memory, RAM) or can storage information and instruction it is other kinds of
Dynamic memory or EEPROM (Electrically Erasable
Programmable Read-Only Memory, EEPROM), read-only optical disc (Compact Disc Read-Only Memory,
CD-ROM) or other optical disc storages, laser disc storage (including compression laser disc, laser disc, laser disc, Digital Versatile Disc, Blu-ray Disc
Deng), magnetic disk storage medium or other magnetic storage apparatus or can be used in carrying or store with instruction or data structure shape
The desired program code of formula simultaneously can be by any other medium of computer access, but not limited to this.
Communication interface 12, using a kind of device of any transceiver, for other equipment or communication, such as with
Too net, RAN, WLAN (Wireless Local Area Networks, WLAN) etc..Communication interface 12 can include connecing
Receive unit and realize that receive capabilities, and transmitting element realize sending function.
Communication bus 13 can be Peripheral Component Interconnect standard (Peripheral Component Interconnect,
PCI) bus or EISA (Extended Industry Standard Architecture, EISA) bus
Deng.Above-mentioned communication bus 13 can be divided into address bus, data/address bus, controlling bus etc..For ease of representing, only with one in Fig. 2
Bar thick line represents, it is not intended that an only bus or a type of bus.
It should be noted that the device structure shown in Fig. 2 does not form the restriction to first base station 02, can include than figure
Show more or less parts, either combine some parts or different parts arrangement, the embodiment of the present invention to this without
Limit.Although being not shown, first base station 02 can also include display, battery, camera, bluetooth module, global positioning system
Modules such as (global positioning system, GPS), will not be repeated here.
Based on each network function module in the system architecture shown in Fig. 1, and first base station 02 shown in Fig. 2 is each
Module or part, the embodiment of the present invention provide a kind of method for controlling downlink power applied to NB-IoT, and this method is to the
The process of the transmission power of NB-IoT frequency band is distributed in the control of one base station, is described in detail.Specifically, such as Fig. 3 institutes
Show, should can include S301-S303 applied to NB-IoT method for controlling downlink power：
The control information that S301, first base station receiving terminal are sent.
Wherein, signal parameter is included in control information, the signal parameter includes the first RSRP and SINR, the first RSRP
It can be used for judging the region residing for terminal with SINR.
Optionally, the signal parameter in the embodiment of the present invention can also include error rates of data.
S302, first base station judge the region residing for terminal according to the first RSRP and SINR.
Wherein, first base station may determine that SINR and default signal to noise ratio decision threshold (i.e. Δ SINR) size, and
Judge the first RSRP and default Reference Signal Received Power decision threshold (i.e. Δ RSRP) size, determine the area residing for terminal
Domain.
Specifically, in the embodiment of the present invention, with reference to Fig. 3, as shown in figure 4, above-mentioned S302 can specifically pass through S302a-
S303c is realized：
If S302a, SINR are more than Δ SINR, and the first RSRP is less than Δ RSRP, and first base station then judges that terminal is in the
One region.
Wherein, Δ SINR is the default signal to noise ratio decision threshold of first base station, and Δ RSRP is the default reference of first base station
Signal reception power decision threshold, first area are the depth overlay area in the cell of first base station covering.
For example, depth overlay area can be the regions such as basement, underground piping.
If S302b, SINR are less than Δ SINR, and the first RSRP is less than Δ RSRP, and first base station then judges that terminal is in the
Two regions.
Wherein, second area is area covered, the region that area covered is first base station and the second base station covers, second
Base station is the adjacent base station of first base station.
For example, second area can be the region 3 in Fig. 1.
If S302c, SINR are more than Δ SINR, and the first RSRP is more than Δ RSRP, and first base station then judges that terminal is in the
Three regions.
Wherein, the 3rd region is the normal region in the cell of first base station covering.The normal region can be the first base
That stands covering does not include basement, underground piping etc., and the second base station area not covered.
The region of S303, first base station according to residing for terminal, it is determined that distributing to the objective emission power of NB-IoT frequency band.
Wherein, the region residing for terminal is different, and the objective emission power that first base station distributes to NB-IoT frequency band is different.
First base station according to the region residing for terminal, can adjust the Initial Trans for the frequency band for distributing to NB-IoT.
The embodiment of the present invention provides a kind of method for controlling downlink power applied to NB-IoT, and first base station can be according to end
The control information sent is held, judges the region residing for terminal, and the region according to residing for terminal determines to distribute to NB-IoT frequency
The objective emission power of band.Because the region residing for terminal is different, first base station distributes to the objective emission of NB-IoT frequency band
Power is different；, can not using different objective emission power when the terminal of first base station and different zones carries out data interaction
Shorten NB-IoT coverage, that is, ensure that data being capable of normal transmission；Meanwhile when terminal is in the cell of first base station covering
During edge, interference of the adjacent area to the terminal in cell edge is reduced.
Specifically, under the first application scenarios of the embodiment of the present invention, when first base station determines that terminal is in the firstth area
During domain, with reference to Fig. 3, as shown in figure 5, above-mentioned S303 can specifically be realized by S303a1-S303d1：
S303a1, first base station heighten the first Initial Trans to the first transmission power.
Wherein, the first Initial Trans are the Initial Trans for the frequency band that first base station distributes to NB-IoT.
Exemplary, when terminal is in first area (i.e. depth overlay area), in order to ensure the covering of first base station
Region can cover depth overlay area, and first base station can heighten the first Initial Trans.
For example, the first Initial Trans of first base station are P1, NB- is distributed in the default adjustment every time of first base station
The range value of the Initial Trans of IoT frequency band is e, and first base station is initial by first after it is determined that terminal is in basement
It is P1+e that transmission power P1, which is heightened as P1+e, i.e. the first transmission power,.
The first error rates of data that S303b1, first base station receiving terminal report.
Wherein, the first error rates of data is corresponding with the first transmission power.First base station is adjusted by the first Initial Trans
After up to the first transmission power, the error rates of data reported when terminal interacts with first base station can then change, first base station
The error rates of data reported according to terminal judges whether to continue to adjust the first transmission power.
S303c1, first base station judge whether the first error rates of data is more than or equal to the first critical value.
Wherein, the first critical value is the default error rates of data decision threshold of first base station.First base station can be according to
The size of one error rates of data and the first critical value, judge whether to continue to adjust the first transmission power.
For example, first base station adjusts the first Initial Trans P1 after being P1+e to the first transmission power, the end of reception
It is x1 to hold the first error rates of data reported, and the first critical value is y1, and first base station judges x1 and y1 size.
If S303d1, the first error rates of data are more than or equal to the first critical value, first base station is then by the first transmission power
It is defined as distributing to the objective emission power of NB-IoT frequency band.
Exemplary, when first base station judges that x1 is more than or equal to y1, first base station is then by the first transmission power P1+e
It is defined as distributing to the objective emission power of NB-IoT frequency band, that is, the objective emission power for distributing to NB-IoT frequency band is P1
+e。
Further, in the embodiment of the present invention, when first base station judges that the first error rates of data is less than the first critical value,
First base station then continues to heighten the first transmission power, until the first error rates of data that the terminal received reports is more than or equal to
During the first critical value, the first transmission power after heightening is defined as distributing to the objective emission power of NB-IoT frequency band.
For example, when first base station judges that x1 is less than y1, the first transmission power P1+e is adjusted to P1+e+e by first base station,
The first transmission power now is P1+e+e, the first error rates of data that then first base station receiving terminal reports, now
One error rates of data is x2, and first base station judges x2 and y1 size, if x2 is more than or equal to y1, first base station is then by first
Transmission power P1+e+e is defined as distributing to the objective emission power of NB-IoT frequency band.
In the embodiment of the present invention, when terminal is in first area (i.e. depth overlay area), first base station is according to terminal
Region, it is determined that the frequency band for distributing to NB-IoT objective emission power, it is contemplated that NB-IoT coverage so that terminal
Can normally it carry out data transmission.
Under second of application scenarios of the embodiment of the present invention, when first base station determines that terminal is in second area, knot
Fig. 3 is closed, as shown in fig. 6, above-mentioned S303 can specifically be realized by S303a2-S303e2：
S303a2, first base station obtain the 2nd RSRP of the second base station, and compare the first RSRP and the 2nd RSRP size.
Wherein, when first base station is after it is determined that terminal is in second area, first base station can obtain the by X2 interface
2nd RSRP of the second base station that two base stations are sent.
S303b2, when the first RSRP is more than or equal to two RSRP, first base station heightens the first Initial Trans
To the second transmission power.
It is exemplary, when first base station determines that terminal is in second area (i.e. area covered), and judge that the first RSRP is big
When two RSRP, first base station can then heighten the first Initial Trans.
For example, terminal is in area covered (region that i.e. first base station and the second base station cover), the of first base station
One Initial Trans are P1, and the width of the Initial Trans of NB-IoT frequency band is distributed in the default adjustment every time of first base station
Angle value is e, and the first RSRP is n, and the 2nd RSRP is m.As n >=m, first base station heightens the first Initial Trans P1 for P1
+ e, i.e. two transmission powers are P1+e.
Further, in the embodiment of the present invention, first base station is heightened to the second transmitting work(by the first Initial Trans
, can also be by sending control information to the second base station, to reduce the interference of neighbor cell during rate.Specifically, with reference to Fig. 6, such as
Shown in Fig. 7, it illustrates another method for controlling downlink power for being applied to NB-IoT provided in an embodiment of the present invention.Fig. 7 shows
The method for controlling downlink power applied to NB-IoT gone out also performs S701 after S303b2.Now S701 is carried out specifically
It is bright：
S701, first base station send the first configured information to the second base station.
Wherein, the first configured information is used to indicate that the second Initial Trans are turned down in the second base station, second initial transmissions
Power is the Initial Trans for the frequency band that NB-IoT is distributed in the second base station.
It is exemplary, can be by X2 interface to when first base station judges that the first RSRP is more than or equal to two RSRP
Two base stations send the first configured information, to cause the second base station to turn down the second Initial Trans.
For example, the second Initial Trans of the second base station are P2, NB- is distributed in the default adjustment every time in the second base station
The range value of the Initial Trans of IoT frequency band is e, and the second base station is receiving the first configured information of first base station transmission
Afterwards, the second Initial Trans P2 is turned down as P2-e.
It should be noted that S303b2 can be first carried out in the embodiment of the present invention, then perform S701；It can also first carry out
S701, then perform S303b2；S303b2 and S701 can also be performed simultaneously.The embodiment of the present invention performs for S303b2 and S701
Sequencing be not limited.
Exemplary, in the embodiment of the present invention, when first base station, which compares the first RSRP, is less than two RSRP, first base station
Configured information can be sent to terminal, to allow the second base station to adjust the Initial Trans of its own.Specifically, with reference to
Fig. 6, as shown in figure 8, the S303b2 in Fig. 6 could alternatively be S303b2 '：
S303b2 ', when the first RSRP is less than two RSRP, first base station to terminal send the second configured information.
Wherein, the second configured information is used for instruction terminal to the second base station transmission control information, to cause the second base station root
The second Initial Trans are heightened to the objective emission power for the frequency band for distributing to NB-IoT according to control information.
Exemplary, the second Initial Trans are heightened after the control information of terminal transmission is received in the second base station
To the 4th transmission power, and the 5th error rates of data that receiving terminal reports, compare the 5th error rates of data and the second critical value
Size, if the 5th error rates of data is more than or equal to the second critical value, the 4th transmission power is then defined as by the second base station
Distribute to the objective emission power of NB-IoT frequency band.
For example, the second Initial Trans of the second base station are P2, NB- is distributed in the default adjustment every time in the second base station
The range value of the Initial Trans of IoT frequency band is e, and the second critical value is y2.Second base station is receiving terminal transmission
After control information, the second Initial Trans P2 is heightened as the 4th transmission power P2+e；What the second base station receiving terminal reported
5th error rates of data x3, the second base station judge x3 and y2 size；If x3 is more than or equal to y2, the second base station is then by the 4th
Transmission power P1+e is defined as distributing to the objective emission power of NB-IoT frequency band.
Further, in the embodiment of the present invention, first base station can also adjust when sending the second configured information to terminal
The Initial Trans of its own, to reduce the interference of this cell.Specifically, with reference to Fig. 8, as shown in figure 9, it illustrates this hair
The another kind that bright embodiment provides is applied to NB-IoT method for controlling downlink power.It is applied to shown in Fig. 9 under NB-IoT
Row Poewr control method afterwards, also performs S901 in S303b2 '.Now S901 is described in detail：
S901, first base station turn down the first Initial Trans.
Wherein, when terminal is in second area, and the first RSRP is less than two RSRP, first base station is sent to terminal
After second configured information, the first Initial Trans can also be turned down.
For example, terminal is in second area, the first Initial Trans are P1, and the default adjustment every time of first base station distributes
Range value to the Initial Trans of NB-IoT frequency band is e, will when first base station judges that the first RSRP is less than two RSRP
First Initial Trans P1 is turned down as P1-e.
It should be noted that S303b2 ' can be first carried out in the embodiment of the present invention, then perform S901；It can also first carry out
S901, then perform S303b2 '；S303b2 ' and S901 can also be performed simultaneously.The embodiment of the present invention is for S303b2 ' and S901
The sequencing of execution is not limited.
The second error rates of data that S303c2, first base station receiving terminal report.
Wherein, the second error rates of data is corresponding with the second transmission power.First base station is adjusted by the first Initial Trans
After up to the second transmission power, the error rates of data reported when terminal interacts with first base station can then change, first base station
The error rates of data reported according to terminal judges whether to continue to adjust the second transmission power.
S303d2, first base station judge whether the second error rates of data is more than or equal to the first critical value.
Wherein, first base station can judge whether to continue to adjust according to the second error rates of data and the size of the first critical value
Whole second transmission power.
For example, first base station adjusts the first Initial Trans P1 to the second transmission power P1+e, the terminal of reception
The second error rates of data reported is x4, and the first critical value is y1, and first base station judges x4 and y1 size.
If S303e2, the second error rates of data are more than or equal to the first critical value, first base station is then by the second transmission power
It is defined as distributing to the objective emission power of NB-IoT frequency band.
For example, when first base station judges that x4 is more than or equal to y1, first base station then determines the first transmission power P1+e
To distribute to the objective emission power of NB-IoT frequency band, that is, the objective emission power for distributing to NB-IoT frequency band is P1+e.
Further, in the embodiment of the present invention, when first base station judges that the second error rates of data is less than the first critical value,
First base station then continues to heighten the second transmission power, until the second error rates of data that the terminal received reports is more than or equal to
During the first critical value, the second transmission power after heightening is defined as distributing to the objective emission power of NB-IoT frequency band.
For example, when first base station judges that x4 is less than y1, first base station heightens the second transmission power P1+e for P1+e+e,
The second transmission power now is P1+e+e；Then the second error rates of data that first base station receiving terminal reports, now
Two error rates of data are x5, and first base station judges x5 and y1 size；If x5 is less than y1, first base station is then by the second transmission power
P1+e+e is heightened as P1+e+e+e, and the second transmission power now is P1+e+e+e；Then first base station receiving terminal reports
Second error rates of data, the second error rates of data now is x6, and first base station judges x6 and y1 size；If x6 is more than or waited
When y1, the second transmission power P1+e+e+e then is defined as distributing to the objective emission work(of NB-IoT frequency band by first base station
Rate.
In the embodiment of the present invention, when terminal is in second area (i.e. the marginal position of the cell of first base station covering),
Second base station can interfere to terminal；First base station according to the region of terminal, and the first RSRP and the 2nd RSRP size,
The objective emission power of the frequency band for distributing to NB-IoT determined, had both considered NB-IoT coverage, it is contemplated that adjacent area
Interference to the terminal in cell edge.
Under the third application scenarios of the embodiment of the present invention, when first base station determines that terminal is in three regions, knot
Fig. 3 is closed, as shown in Figure 10, above-mentioned S303 can specifically be realized by S303a3-S303f3：
The 3rd error rates of data that S303a3, first base station receiving terminal report.
Wherein, the 3rd error rates of data is the primary data bit error rate that terminal is sent.
Certainly, in the embodiment of the present invention, first base station can also obtain the 3rd by the control information of receiving terminal transmission
Error rates of data, i.e. control information include signal parameter, and the signal parameter also includes the 3rd error rates of data.
S303b3, first base station judge whether the 3rd error rates of data is less than the first critical value.
Wherein, when first base station determines that terminal is in the 3rd region, i.e., what first base station covered does not include basement, underground
Pipeline etc., and during the second base station area not covered, the 3rd error rates of data that first base station can report according to terminal is true
It is fixed whether to heighten the first Initial Trans.
For example, the 3rd error rates of data that reports of terminal that first base station receives is x7, the first critical value is y1, the first base
Stand and judge x7 and y1 size.
If S303c3, the 3rd error rates of data are less than the first critical value, first base station then adjusts the first Initial Trans
Up to the 3rd transmission power.
Wherein, the first Initial Trans are the Initial Trans for the frequency band that first base station distributes to NB-IoT.
For example, when first base station judges x7<During y1, first base station then heightens the first Initial Trans P1 to the 3rd hair
Penetrate power P 1+e.
Optionally, in the embodiment of the present invention, if the 3rd error rates of data that first base station receives is faced more than or equal to first
Dividing value, first base station can not then adjust the first Initial Trans.
The 4th error rates of data that S303d3, first base station receiving terminal report.
Wherein, the 4th error rates of data is corresponding with the 3rd transmission power.First base station is adjusted by the first Initial Trans
After up to the 3rd transmission power, the 4th error rates of data that receiving terminal reports, according to the 4th error rates of data determine whether after
It is continuous to heighten the 3rd Initial Trans.
S303e3, first base station judge whether the 4th error rates of data is more than or equal to the first critical value.
For example, the 4th error rates of data that reports of terminal that first base station receives is x8, the first critical value is y1, the first base
Stand and judge x8 and y1 size.
If S303f3, the 4th error rates of data are more than or equal to the first critical value, first base station is then by the 3rd transmission power
It is defined as distributing to the objective emission power of NB-IoT frequency band.
For example, when first base station judges that x8 is more than or equal to y1, first base station then determines the 3rd transmission power P1+e
To distribute to the objective emission power of NB-IoT frequency band, that is, the objective emission power for distributing to NB-IoT frequency band is P1+e.
Further, in the embodiment of the present invention, when first base station judges that the 4th error rates of data is less than the first critical value,
First base station then continues to heighten the 3rd transmission power, until the 4th error rates of data that the terminal received reports is more than or equal to
During the first critical value, first base station then stops heightening the 3rd transmission power, and the 3rd transmission power after heightening is defined as point
The objective emission power of dispensing NB-IoT frequency band.
For example, when first base station judges that x8 is less than y1, first base station heightens the 3rd transmission power P1+e for P1+e+e,
The 3rd transmission power now is P1+e+e；Then the 4th error rates of data that first base station receiving terminal reports, now
Four error rates of data are x9, and first base station judges x9 and y1 size；If x9 is more than or equal to y1, first base station is then by the 3rd hair
Penetrate the objective emission power that power P 1+e+e is defined as distributing to NB-IoT frequency band.
In the embodiment of the present invention, when terminal is in the 3rd region (i.e. the normal region of the cell of first base station covering),
Second base station will not interfere to terminal；First base station according to the region of terminal, it is determined that the frequency band for distributing to NB-IoT
Objective emission power, it is contemplated that NB-IoT coverage, ensure that terminal can normally carry out data transmission.
It is above-mentioned that mainly scheme provided in an embodiment of the present invention is described from the angle of first base station.It is appreciated that
It is that for first base station in order to realize above-mentioned function, it comprises perform the corresponding hardware configuration of each function and/or software module.
Those skilled in the art should be readily appreciated that, with reference to the first base station of each example of the embodiments described herein description
And algorithm steps, the present invention can be realized with hardware, or the combining form of hardware and computer software.Some function actually with
The mode of hardware or computer software driving hardware performs, application-specific and design constraint bar depending on technical scheme
Part.Professional and technical personnel can realize described function using distinct methods to each specific application, but this
Realize it is not considered that beyond the scope of this invention.
The embodiment of the present invention can carry out functional module or functional unit according to above method example to first base station
Division, for example, can correspond to each function divides each functional module or functional unit, can also be by two or more
Function be integrated in a processing module.Above-mentioned integrated module can both be realized in the form of hardware, can also use
The form of software function module or functional unit is realized.Wherein, the division in the embodiment of the present invention to module or unit is
Schematically, only a kind of division of logic function, can there is other dividing mode when actually realizing.
Figure 11 shows a kind of possible structural representation of first base station involved in above-described embodiment.First base
Standing 1100 can include：Receiving unit 1101, judging unit 1102 and determining unit 1103.
Wherein, the function of receiving unit 1101 can be realized by the communication interface 12 shown in Fig. 2.Receiving unit 1101 is used
In supporting the S301 in above-described embodiment, and/or other processes for techniques described herein.
The function of judging unit 1102 can be realized by the processor 10 shown in Fig. 2.Judging unit 1102 is used to support
S302 and S302a-S303c in above-described embodiment, and/or other processes for techniques described herein.
The function of determining unit 1103 can be realized by the processor 10 shown in Fig. 2.Determining unit 1103 is used to support
S303, S303a1-S303d1, S303a2-S303e2, S303b2 ' and S303a3-S303f3 in above-described embodiment, and/or use
In other processes of techniques described herein.
Further, when determining unit 1103, which compares the first RSRP, is more than or equal to two RSRP, with reference to Figure 11, such as scheme
Shown in 12, first base station 1100 can also include：Transmitting element 1104.
Wherein, the function of transmitting element 1104 can be realized by the communication interface 12 shown in Fig. 2.Transmitting element 1104 is used
In supporting the S701 in above-described embodiment, and/or other processes for techniques described herein.
Further, when determining unit 1103, which compares the first RSRP, is less than two RSRP, with reference to Figure 11, such as Figure 13 institutes
Show, first base station 1100 can also include：Adjustment unit 1105.
The function of adjustment unit 1105 can be realized by the processor 10 shown in Fig. 2.Adjustment unit 1105 is used to support
S901 in above-described embodiment, and/or other processes for techniques described herein.
Certainly, first base station 1100 provided in an embodiment of the present invention module including but not limited to described above, such as the
Memory cell can also be included in one base station 1100.The function of the memory cell can be realized by the memory 11 shown in Fig. 2.
In the case of using integrated unit, above-mentioned judging unit 1102, determining unit 1103 and adjustment unit 1105
Realized etc. that can be integrated in a processing module, the processing module can be processor 10.Receiving unit 1101 and transmission are single
Member 1104, which can be integrated in a communication module, to be realized, the communication module can be communication interface 12.
The embodiment of the present invention also provides a kind of computer-readable recording medium, and the computer-readable recording medium includes meter
Calculation machine is instructed, when the computer instruction is run on a computer so that the computer is performed as any in Fig. 3-Figure 10
Correlation technique step in accompanying drawing.
Wherein, in first base station 1100 provided in an embodiment of the present invention the detailed description of modules and modules or
Caused technique effect may be referred to present invention side after unit performs correlation technique step in Fig. 3-Figure 10 in either figure
Associated description in method embodiment, here is omitted.
Through the above description of the embodiments, it is apparent to those skilled in the art that, for description
It is convenient and succinct, can as needed will be upper only with the division progress of above-mentioned each functional module for example, in practical application
State function distribution to be completed by different functional modules, i.e., the internal structure of device is divided into different functional modules, to complete
All or part of function described above.
In several embodiments provided herein, it should be understood that disclosed apparatus and method, it can be passed through
Its mode is realized.For example, device embodiment described above is only schematical, for example, the module or unit
Division, only a kind of division of logic function, can there is other dividing mode, such as multiple units or component when actually realizing
Another device can be combined or be desirably integrated into, or some features can be ignored, or do not perform.It is another, it is shown or
The mutual coupling discussed or direct-coupling or communication connection can be the indirect couplings by some interfaces, device or unit
Close or communicate to connect, can be electrical, mechanical or other forms.
The unit illustrated as separating component can be or may not be physically separate, show as unit
The part shown can be a physical location or multiple physical locations, you can with positioned at a place, or can also be distributed to
Multiple different places.Some or all of unit therein can be selected to realize this embodiment scheme according to the actual needs
Purpose.
In addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, can also
That unit is individually physically present, can also two or more units it is integrated in a unit.Above-mentioned integrated list
Member can both be realized in the form of hardware, can also be realized in the form of SFU software functional unit.
If the integrated unit is realized in the form of SFU software functional unit and is used as independent production marketing or use
When, it can be stored in a read/write memory medium.Based on such understanding, the technical scheme of the embodiment of the present invention is substantially
The part to be contributed in other words to prior art or all or part of the technical scheme can be in the form of software products
Embody, the software product is stored in a storage medium, including some instructions are make it that an equipment (can be single
Piece machine, chip etc.) or processor (processor) perform all or part of step of each embodiment methods described of the present invention.
And foregoing storage medium includes：USB flash disk, mobile hard disk, ROM, RAM, magnetic disc or CD etc. are various can be with store program codes
Medium.
The foregoing is only a specific embodiment of the invention, but protection scope of the present invention is not limited thereto, any
The invention discloses technical scope in change or replacement, should all be included within the scope of the present invention.Therefore, this hair
Bright protection domain should be based on the protection scope of the described claims.
Claims (18)
1. a kind of method for controlling downlink power applied to NB-IoT, it is characterised in that methods described includes：
The control information that first base station receiving terminal is sent, include signal parameter, the signal parameter in the control information
Including the first Reference Signal Received Power RSRP and signal to noise ratio SINR；
The first base station judges the region residing for the terminal according to the first RSRP and SINR；
Region of the first base station according to residing for the terminal, it is determined that distribute to arrowband honeycomb Internet of Things NB-IoT frequency band
Objective emission power.
2. according to the method for claim 1, it is characterised in that the first base station is according to the first RSRP and described
SINR, judge the region residing for the terminal, including：
If the SINR is more than Δ SINR, and the first RSRP is less than Δ RSRP, and the first base station then judges the terminal
In first area；Wherein, the Δ SINR is the default signal to noise ratio decision threshold of the first base station, and the Δ RSRP is institute
The default Reference Signal Received Power decision threshold of first base station is stated, the first area is the cell of first base station covering
In depth overlay area；
If the SINR is less than the Δ SINR, and the first RSRP is less than the Δ RSRP, and the first base station then judges
The terminal is in second area, and the second area is area covered, and the area covered is the first base station and second
The region that base station covers, second base station are the adjacent base station of the first base station；
If the SINR is more than the Δ SINR, and the first RSRP is more than the Δ RSRP, and the first base station then judges
The terminal is in the 3rd region, and the 3rd region is the normal region in the cell of first base station covering.
3. according to the method for claim 2, it is characterised in that described true when the terminal is in the first area
Surely the objective emission power of NB-IoT frequency band is distributed to, including：
First Initial Trans are heightened to the first transmission power, first Initial Trans are the first base station point
The Initial Trans of dispensing NB-IoT frequency band；
Receive the first error rates of data that the terminal reports, first error rates of data and first transmission power pair
Should；
Judge whether first error rates of data is more than or equal to the first critical value, first critical value is first base
Stand default error rates of data decision threshold；
If first error rates of data is more than or equal to first critical value, first transmission power is defined as institute
State the objective emission power for the frequency band for distributing to NB-IoT.
4. according to the method for claim 2, it is characterised in that described true when the terminal is in the second area
Surely the objective emission power of NB-IoT frequency band is distributed to, including：
Obtain the 2nd RSRP of the second base station, and the first RSRP and the 2nd RSRP size；
When the first RSRP is more than or equal to two RSRP, the first Initial Trans are heightened to the second transmitting work(
Rate, first Initial Trans are the Initial Trans for the frequency band that the first base station distributes to NB-IoT；
Receive the second error rates of data that the terminal reports, second error rates of data and second transmission power pair
Should；
Judge whether second error rates of data is more than or equal to the first critical value, first critical value is first base
Stand default error rates of data decision threshold；
If second error rates of data is more than or equal to first critical value, second transmission power is defined as institute
State the objective emission power for the frequency band for distributing to NB-IoT.
5. according to the method for claim 4, it is characterised in that adjust the first Initial Trans to the second hair described
Penetrate after power, methods described also includes：
The first base station sends the first configured information to second base station, and first configured information is used to indicate described the
The second Initial Trans are turned down in two base stations, and second Initial Trans are the frequency that NB-IoT is distributed in second base station
The Initial Trans of band.
6. the method according to claim 4 or 5, it is characterised in that methods described also includes：
When the first RSRP is less than two RSRP, the second configured information is sent to the terminal；Wherein, described second
Configured information is used to indicate that the terminal sends the control information to second base station, with cause second base station according to
The control information heightens the second Initial Trans to the objective emission power of the frequency band for distributing to NB-IoT, described
Second Initial Trans are the Initial Trans for the frequency band that NB-IoT is distributed in second base station.
7. according to the method for claim 6, it is characterised in that it is described to the terminal send the second configured information it
Afterwards, methods described also includes：
Turn down first Initial Trans.
8. according to the method for claim 2, it is characterised in that described true when the terminal is in three region
Surely the objective emission power of NB-IoT frequency band is distributed to, including：
The 3rd error rates of data that the terminal reports is received, the 3rd error rates of data is the initial number that the terminal is sent
According to the bit error rate；
Judge whether the 3rd error rates of data is less than the first critical value, first critical value is that the first base station is preset
Error rates of data decision threshold；
If the 3rd error rates of data is less than first critical value, the first Initial Trans are heightened to the 3rd transmitting
Power, first Initial Trans are the Initial Trans for the frequency band that the first base station distributes to NB-IoT；
Receive the 4th error rates of data that the terminal reports, the 4th error rates of data and the 3rd transmission power pair
Should；
Judge whether the 4th error rates of data is more than or equal to first critical value；
If the 4th error rates of data is more than or equal to first critical value, the 3rd transmission power is defined as institute
State the objective emission power for the frequency band for distributing to NB-IoT.
9. a kind of first base station, it is characterised in that the first base station includes：
Receiving unit, for the control information of receiving terminal transmission, include signal parameter, the signal in the control information
Parameter includes the first Reference Signal Received Power RSRP and signal to noise ratio SINR；
Judging unit, for according to the first RSRP and SINR, judging the region residing for the terminal；
Determining unit, for the region according to residing for the terminal, it is determined that distributing to the objective emission power of NB-IoT frequency band.
10. first base station according to claim 9, it is characterised in that the judging unit, be specifically used for：
If the SINR is more than Δ SINR, and the first RSRP is less than Δ RSRP, then judges that the terminal is in first area；
Wherein, the Δ SINR is the default signal to noise ratio decision threshold of the first base station, and the Δ RSRP is that the first base station is pre-
If Reference Signal Received Power decision threshold, the first area be the first base station covering cell in depth covering
Region；
If the SINR is less than the Δ SINR, and the first RSRP is less than the Δ RSRP, then judges that the terminal is in
Second area, the second area are area covered, and the area covered first base station and the second base station cover
Region, second base station are the adjacent base station of the first base station；
If the SINR is more than the Δ SINR, and the first RSRP is more than the Δ RSRP, then judges that the terminal is in
3rd region, the 3rd region are the normal region in the cell of first base station covering.
11. first base station according to claim 10, it is characterised in that when the judging unit judges that the terminal is in
During the first area, the determining unit, it is specifically used for：
First Initial Trans are heightened to the first transmission power, first Initial Trans are the first base station point
The Initial Trans of dispensing NB-IoT frequency band；
Receive the first error rates of data that the terminal reports, first error rates of data and first transmission power pair
Should；
Judge whether first error rates of data is more than or equal to the first critical value, first critical value is first base
Stand default error rates of data decision threshold；
If first error rates of data is more than or equal to first critical value, first transmission power is defined as institute
State the objective emission power for the frequency band for distributing to NB-IoT.
12. first base station according to claim 10, it is characterised in that when the judging unit judges that the terminal is in
During the second area, the determining unit, it is specifically used for：
Obtain the 2nd RSRP of the second base station, and the first RSRP and the 2nd RSRP size；
When the first RSRP is more than or equal to two RSRP, the first Initial Trans are heightened to the second transmitting work(
Rate, first Initial Trans are the Initial Trans for the frequency band that the first base station distributes to NB-IoT；
Receive the second error rates of data that the terminal reports, second error rates of data and second transmission power pair
Should；
Judge whether second error rates of data is more than or equal to the first critical value, first critical value is first base
Stand default error rates of data decision threshold；
If second error rates of data is more than or equal to first critical value, second transmission power is defined as institute
State the objective emission power for the frequency band for distributing to NB-IoT.
13. first base station according to claim 12, it is characterised in that the first base station also includes：
Transmitting element, for the determining unit by first Initial Trans adjust to second transmission power it
Afterwards, the first configured information is sent to second base station, first configured information is used to indicate that second base station turns down the
Two Initial Trans, second Initial Trans are the initial transmissions for the frequency band that NB-IoT is distributed in second base station
Power.
14. the first base station according to claim 12 or 13, it is characterised in that the determining unit, be additionally operable to when described
When first RSRP is less than two RSRP, the second configured information is sent to the terminal；Wherein, second configured information is used
In indicating the terminal to second base station transmission control information, to cause second base station to be believed according to the control
Second Initial Trans are heightened to the objective emission power of the frequency band for distributing to NB-IoT, described second and just originated by breath
Penetrate the Initial Trans that power distributes to NB-IoT frequency band for second base station.
15. first base station according to claim 14, it is characterised in that the first base station also includes：
Adjustment unit, after sending the second configured information to the terminal in the determining unit, turn down at the beginning of described first
Beginning transmission power.
16. first base station according to claim 10, it is characterised in that when the judging unit judges that the terminal is in
During three region, the determining unit, it is specifically used for：
The 3rd error rates of data that the terminal reports is received, the 3rd error rates of data is the initial number that the terminal is sent
According to the bit error rate；
Judge whether the 3rd error rates of data is less than the first critical value, first critical value is that the first base station is preset
Error rates of data decision threshold；
If the 3rd error rates of data is less than first critical value, the first Initial Trans are heightened to the 3rd transmitting
Power, first Initial Trans are the Initial Trans for the frequency band that the first base station distributes to NB-IoT；
Receive the 4th error rates of data that the terminal reports, the 4th error rates of data and the 3rd transmission power pair
Should；
Judge whether the 4th error rates of data is more than or equal to first critical value；
If the 4th error rates of data is more than or equal to first critical value, the 3rd transmission power is defined as institute
State the objective emission power for the frequency band for distributing to NB-IoT.
17. a kind of first base station, it is characterised in that the first base station includes：Processor, memory and communication interface；
The memory is used to store computer executed instructions, and the processor, the communication interface and the memory pass through
Bus is connected, and when the first base station is run, the computer of memory storage described in the computing device, which performs, to be referred to
Order, so that the first base station performs the downlink power control applied to NB-IoT as any one of claim 1-8
Method.
18. a kind of computer-readable recording medium, it is characterised in that including computer instruction, when the computer instruction is one
When being run on individual computer so that the computer perform as any one of claim 1-8 be applied to NB-IoT
Method for controlling downlink power.
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