CN103535063B - Interference control method and device for same frequency network of macro and micro base stations - Google Patents
Interference control method and device for same frequency network of macro and micro base stations Download PDFInfo
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- CN103535063B CN103535063B CN201380000298.XA CN201380000298A CN103535063B CN 103535063 B CN103535063 B CN 103535063B CN 201380000298 A CN201380000298 A CN 201380000298A CN 103535063 B CN103535063 B CN 103535063B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
- H04W16/24—Cell structures
- H04W16/32—Hierarchical cell structures
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Abstract
The present invention is applicable to the communications field, it is provided that interference control method and device for same frequency network of macro and micro base stations, including: its residing wireless environment of micro-base station scans, obtain scanning result；Described scanning result is reported upper level network element by described micro-base station, so that described upper level network element determines the community the strongest to described micro-base station signal strength according to described scanning result, the configuration parameter of Bing Jianggai community is allocated to described micro-base station；Described micro-base station judges whether each Traffic Channel is currently carried out service bearer by described micro-base station respectively；For currently not carried out the Traffic Channel of service bearer by described micro-base station, described micro-base station obtains the UE uplink interference estimator to described micro-base station in this Traffic Channel, and offsets described uplink interference estimator in the upward signal of this Traffic Channel received.The network architecture that the present invention disposes with frequency with one or more micro-base station of superposition in its coverage based on macro base station, decreases the uplink interference produced by UE, improves network throughput.
Description
Technical field
The invention belongs to the communications field, particularly relate to a kind of interference control method and device for same frequency network of macro and micro base stations.
Background technology
In recent years, mobile Internet has obtained flourish, and the network coverage of operator constantly extends, whenever and wherever possible on the ground
Net becomes possibility；Meanwhile, intelligent terminal's business is more and more abundanter, thus mobile network's capacity is caused extreme shock, holds
Easily frequently cause small area jam, affect network performance.In order to improve network capacity, can covering at macrocell (Macro cell)
Superposition Microcell (Micro cell) in the range of lid.
In the case of micro-base station with macro base station identical networking, in the coverage of the two, there is soft handover area,
Subscriber equipment (User Equipment, UE) in soft handover area is if being operated in macrocell, owing to it is in macrocell edge,
Launch power relatively big, micro-base station can be formed uplink interference, thus the end raising micro-base station is hot-tempered, reduces the capacity of micro-base station.
Summary of the invention
The purpose of the embodiment of the present invention is to provide the interference control method of a kind of same frequency network of macro and micro base stations, it is intended to reduce
The UE uplink interference to micro-base station in existing same frequency network of macro and micro base stations scheme.
First aspect, it is provided that the interference control method of a kind of same frequency network of macro and micro base stations, including: micro-base station scans residing for it
Wireless environment, obtain scanning result；Described scanning result is reported upper level network element by described micro-base station, in described scanning result
Include the signal intensity of the community scanned, so that described upper level network element is determined described micro-base according to described scanning result
The community that signal intensity of standing is the strongest, the configuration parameter of Bing Jianggai community is allocated to described micro-base station；Described micro-base station is according to institute
After stating the configuration parameter operation of upper level network element configuration, judge whether each Traffic Channel is currently carried out by described micro-base station respectively
Service bearer；For currently not carried out the Traffic Channel of service bearer by described micro-base station, described micro-base station obtains in this business
The UE uplink interference estimator to described micro-base station on channel, and in the upward signal of this Traffic Channel received, offset institute
State uplink interference estimator.
In the first possible implementation of first aspect, its residing wireless environment of described micro-base station scans is concrete
For: working frequency points that upper level network element described in described micro-base station scans is specified or community.
In the implementation that the second of first aspect is possible, its residing wireless environment of described micro-base station scans is concrete
For: described micro-base station carries out full band scan to its residing wireless environment.
Second aspect, it is provided that the interference control method of a kind of same frequency network of macro and micro base stations, including: receive micro-base station and report
Scanning result, described scanning result includes the signal intensity of the community that described micro-base station scans arrives；According to described scanning
As a result, the community the strongest to described micro-base station signal strength is determined；Obtain described the strongest to described micro-base station signal strength
The configuration parameter of community；The configuration parameter got is allocated to described micro-base station, so that described micro-base station is according to described acquisition
The configuration parameter arrived runs.
In the first possible implementation of second aspect, described the configuration parameter got is allocated to described micro-
Base station includes: be allocated to after the cell ID in the described configuration parameter got is revised as the cell ID of described micro-base station
Described micro-base station.
In conjunction with the first possible implementation of first aspect or first aspect, in the implementation that the second is possible
In, described method also includes: by the cell ID of the described community the strongest to described micro-base station signal strength and described micro-base station
Cell ID be associated, with the moment ensure described micro-base station with described, the community that described micro-base station signal strength is the strongest is joined
It is equipped with identical configuration parameter.
The third aspect, it is provided that the interference control method of a kind of same frequency network of macro and micro base stations, including: receive what base station reported
Described base station carries out the testing result of signal output detections to each Traffic Channel, and described base station includes macro base station or micro-base station；
Determine whether described base station carries out service bearer to UE in described Traffic Channel according to described testing result；For described base station
UE is not carried out the described Traffic Channel of service bearer, notifies that the transmitting power in this Traffic Channel is closed in described base station.
Fourth aspect, it is provided that the interference control method of a kind of same frequency network of macro and micro base stations, including: base station is to each business
Channel carries out signal output detections, obtains testing result；Described testing result is reported the higher level of described base station by described base station
Network element, so that described upper level network element is according to described testing result, determines whether described base station is entered UE in described Traffic Channel
Row service bearer；Described base station is not carried out to the described Traffic Channel of service bearer to UE, described base station receives described higher level
The notice of network element, closes its transmitting power in this Traffic Channel.
5th aspect, it is provided that a kind of micro-base station, including: scanning element, for scanning its residing wireless environment, obtain
Scanning result；First reports unit, for receiving the described scanning result that described scanning element sends, and by described scanning result
Report upper level network element, described scanning result includes the signal intensity of the community scanned, so that described upper level network element root
Determining the community the strongest to described micro-base station signal strength according to described scanning result, the configuration parameter of Bing Jianggai community is allocated to
Described micro-base station；Judging unit, after running at the configuration parameter configured according to described upper level network element, judges each respectively
Whether Traffic Channel is currently carried out service bearer by described micro-base station；Uplink interference offset unit, for judging list according to described
The judged result of unit, for currently not carried out the Traffic Channel of service bearer by described micro-base station, obtains in this Traffic Channel
The UE uplink interference estimator to described micro-base station, and offset described up in the upward signal of this Traffic Channel received
Interference Estimation amount.
In the first possible implementation of the 5th aspect, described scanning element specifically for: scan described higher level
Working frequency points that network element is specified or community.
In the implementation that the second of the 5th aspect is possible, described scanning element specifically for: to described micro-base station
Residing wireless environment carries out full band scan.
6th aspect, it is provided that the interference of a kind of same frequency network of macro and micro base stations controls device, including: scanning result receives single
Unit, for receiving the scanning result that micro-base station reports, includes the community that described micro-base station scans arrives in described scanning result
Signal intensity；First determines unit, receives, for receiving described scanning result, the described scanning result that unit sends, and according to institute
State scanning result, determine the community the strongest to described micro-base station signal strength；Acquiring unit, for determining according to described first
Described the strongest to the described micro-base station signal strength community that unit is determined, obtain described to described micro-base station signal strength
The configuration parameter of strong community；Dispensing unit, for being allocated to described micro-base by the configuration parameter that described acquiring unit gets
Stand so that described micro-base station according to described in the configuration parameter that gets run.
In the first possible implementation of the 6th aspect, described dispensing unit specifically for: get described
Configuration parameter in cell ID be revised as the cell ID of described micro-base station after be allocated to described micro-base station.
In conjunction with the 6th aspect or the first possible implementation of the 6th aspect, in the implementation that the second is possible
In, described device also includes: associative cell, for by the cell ID of the described community the strongest to described micro-base station signal strength
It is associated with the cell ID of described micro-base station, ensures that described micro-base station is with described to described micro-base station signal strength with the moment
The strongest cell configuration has identical configuration parameter.
7th aspect, it is provided that the interference of a kind of same frequency network of macro and micro base stations controls device, including: testing result receives single
Unit, the described base station reported for receiving base station carries out the testing result of signal output detections, described base to each Traffic Channel
Station includes macro base station or micro-base station；Second determines unit, receives, for receiving described testing result, the described detection that unit sends
As a result, and according to described testing result determine whether described base station carries out service bearer to UE in described Traffic Channel；Notice
For described second, unit, for determining that the described base station that unit is determined does not carries out the described business letter of service bearer to UE
Road, notifies that the transmitting power in this Traffic Channel is closed in described base station.
Eighth aspect, it is provided that a kind of base station, including: detector unit, for each Traffic Channel is carried out signal output
Detection, obtains testing result；Second reports unit, for receiving the testing result that described detector unit sends, and by described inspection
Survey result and report the upper level network element of described base station, so that described upper level network element is according to described testing result, determine described base station
Whether in described Traffic Channel, UE is carried out service bearer；Closing unit, for not carrying out business to UE for described base station
The described Traffic Channel of carrying, receives the notice of described upper level network element, closes its transmitting power in this Traffic Channel.
9th aspect, it is provided that a kind of micro-base station, described micro-base station includes processor, memorizer, bus and antenna, wherein
Described processor, described memorizer carry out mutual communicating with described antenna by described bus；Described memorizer, is used for depositing
Storage program；Described processor is for performing the program of storage in described memorizer；Described program when executed, is used for: scanning
Wireless environment residing for described micro-base station, obtains scanning result；Described antenna is for reporting higher level's net by described scanning result
Unit, includes the signal intensity of the community scanned in described scanning result, so that described upper level network element is according to described scanning knot
Fruit determines the community the strongest to described micro-base station signal strength, and the configuration parameter of Bing Jianggai community is allocated to described micro-base station；
Described program is additionally operable to: after the configuration parameter configured according to described upper level network element runs, judge each Traffic Channel respectively
Currently whether carried out service bearer by described micro-base station；For the current business letter not carried out service bearer by described micro-base station
Road, obtains the UE uplink interference estimator to described micro-base station in this Traffic Channel, and in this Traffic Channel received
Upward signal is offset described uplink interference estimator.
Wireless environment tool in the first possible implementation of the 9th aspect, residing for the described micro-base station of described scanning
Body is: scan working frequency points or community that described upper level network element is specified.
Wireless environment tool in the implementation that the second of the 9th aspect is possible, residing for the described micro-base station of described scanning
Body is: the wireless environment residing for described micro-base station is carried out full band scan.
Tenth aspect, it is provided that the interference of a kind of same frequency network of macro and micro base stations controls device, described device include processor,
Memorizer, bus and antenna, wherein said processor, described memorizer and described antenna carry out mutual by described bus
Communication；Described memorizer, is used for storing program；Described processor is for performing the program of storage in described memorizer；Described sky
Line, for receiving the scanning result that micro-base station reports, includes the letter of the community that described micro-base station scans arrives in described scanning result
Number intensity；Described program when executed, is used for: according to the described scanning result of described antenna, determines described micro-base station
The community that signal intensity is the strongest；Obtain the configuration parameter of the described community the strongest to described micro-base station signal strength；To get
Configuration parameter be allocated to described micro-base station so that described micro-base station according to described in the configuration parameter that gets run.
In the first possible implementation of the tenth aspect, described the configuration parameter got is allocated to described micro-
Base station includes: be allocated to after the cell ID in the described configuration parameter got is revised as the cell ID of described micro-base station
Described micro-base station.
In conjunction with the tenth aspect or the first possible implementation of the tenth aspect, in the implementation that the second is possible
In, described program is additionally operable to: by the cell ID of the described community the strongest to described micro-base station signal strength and described micro-base station
Cell ID be associated, with the moment ensure described micro-base station with described, the community that described micro-base station signal strength is the strongest is joined
It is equipped with identical configuration parameter.
11st aspect, it is provided that the interference of a kind of same frequency network of macro and micro base stations controls device, described device includes processing
Device, memorizer, bus and antenna, wherein said processor, described memorizer and described antenna are carried out mutually by described bus
Between communication；Described memorizer, is used for storing program；Described processor is for performing the program of storage in described memorizer；Institute
State the described base station that antenna reports for receiving base station and each Traffic Channel is carried out the testing result of signal output detections, described
Base station includes macro base station or micro-base station；Described program when executed, is used for: determine that described base station is according to described testing result
No in described Traffic Channel, UE is carried out service bearer；Described base station is not carried out to the described business letter of service bearer to UE
Road, described antenna is for notifying that the transmitting power in this Traffic Channel is closed in described base station.
12nd aspect, it is provided that a kind of base station, described base station includes processor, memorizer, bus and antenna, Qi Zhongsuo
State processor, described memorizer carries out mutual communicating with described antenna by described bus；Described memorizer, is used for storing
Program；Described processor is for performing the program of storage in described memorizer；Described program when executed, is used for: to each
Traffic Channel carries out signal output detections, obtains testing result；Described antenna is for reporting described base by described testing result
The upper level network element stood, so that described upper level network element is according to described testing result, determines that whether described base station is in described Traffic Channel
On UE is carried out service bearer；Described base station is not carried out to the described Traffic Channel of service bearer to UE, described antenna is used for
Receive the notice of described upper level network element, close its transmitting power in this Traffic Channel.
The embodiment of the present invention is disposed with frequency based on macro base station and one or more micro-base station of superposition in its coverage
The network architecture, by estimating the uplink interference produced by UE in time, thus on offsetting in the upward signal that base station receives
Row interference signal, thereby reduces the uplink interference produced by UE, improves network throughput.
Accompanying drawing explanation
Fig. 1 is the application scenarios that the interference control method of same frequency network of macro and micro base stations that the embodiment of the present invention provides is suitable for
Figure；
Fig. 2 be the embodiment of the present invention provide same frequency network of macro and micro base stations the micro-base station of interference control method realize flow process
Figure；
Fig. 3 is the scan process of the micro-base station of interference control method of the same frequency network of macro and micro base stations that the embodiment of the present invention provides
Schematic diagram；
Fig. 4 is the realization stream of the interference control method upper level network element of the same frequency network of macro and micro base stations that the embodiment of the present invention provides
Cheng Tu；
Fig. 5 is that the uplink interference of the interference control method base station of the same frequency network of macro and micro base stations that the embodiment of the present invention provides disappears
Except schematic flow sheet；
Fig. 6 is the reality of the interference control method upper level network element of the same frequency network of macro and micro base stations that another embodiment of the present invention provides
Existing flow chart；
Fig. 7 is the inspection of the interference control method upper level network element of the same frequency network of macro and micro base stations that another embodiment of the present invention provides
Survey result Stored Procedure figure；
Fig. 8 is the realization stream of the interference control method base station of the same frequency network of macro and micro base stations that another embodiment of the present invention provides
Cheng Tu；
Fig. 9 is the structured flowchart of the interference control device of the same frequency network of macro and micro base stations that the embodiment of the present invention provides；
Figure 10 is the structured flowchart of the interference control device of the same frequency network of macro and micro base stations that another embodiment of the present invention provides；
Figure 11 is the hardware block diagram of the interference control device of the same frequency network of macro and micro base stations that the embodiment of the present invention provides；
Figure 12 is the hardware configuration of the interference control device of the same frequency network of macro and micro base stations that another embodiment of the present invention provides
Block diagram.
Detailed description of the invention
In order to make the purpose of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, right
The present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, and
It is not used in the restriction present invention.
The embodiment of the present invention is disposed with frequency based on macro base station and one or more micro-base station of superposition in its coverage
The network architecture, by estimating the uplink interference produced by UE in time, thus deducts in the upward signal that base station receives
Row interference signal, thereby reduces the uplink interference produced by UE, improves network throughput.
Fig. 1 shows the application that the interference control method of the same frequency network of macro and micro base stations that the embodiment of the present invention provides is suitable for
Scene, for convenience of description, illustrate only part related to the present embodiment.
With reference to Fig. 1, this application scenarios uses the structure of heterogeneous network (Heterogeneous Network, Hetnet), by
The base station superposition networking that multiple covering powers are different, wherein, multiple micro-including in macro base station 11 and macro base station 11 coverage
Base station 12, thus realize in a macrocell, dispose multiple Microcell.In the network architecture shown in Fig. 1, macro base station 11 He
Micro-base station 12 is all operated in identical working frequency points, and the transmitting power of micro-base station 12 is much smaller than macro base station 11.
In the network architecture shown in Fig. 1, macro base station 11 and micro-base station 12 possess third generation partner program completely
NodeB function defined in (The3rd Generation Partnership Project, 3GPP), Iub interface is passed through in base station
Connecting with radio network controller (Radio Network Controller, RNC), RNC is then by Iu interface and core net
(Core Network, CN) connects.
It should be noted that in actual application scenarios, multiple network rack as shown in Figure 1 may be there is simultaneously
Structure, for the ease of describing, illustrates the most one by one.
Hereinafter the interference control method of the same frequency network of macro and micro base stations that the embodiment of the present invention provides is described in detail:
What Fig. 2 showed the interference control method of the same frequency network of macro and micro base stations that the embodiment of the present invention provides realizes flow process
Figure, in the present embodiment, the executive agent of flow process is the micro-base station in the network architecture shown in Fig. 1, and it realizes flow process and describes in detail such as
Under:
In S201, its residing wireless environment of micro-base station scans, obtain scanning result.
In the present embodiment, after micro-base station powers on, automatically set up Operation and maintenance link with its upper level network element
(Operation and Maintenance Link, OML), and the wireless environment that it is residing is scanned.Wherein, micro-base station
Can be by being scanned independent of the receiver of micro-base station, it is also possible to realize receiver by virtual being used in the middle of micro-base station
The module of function is scanned, and such as, the receive capabilities utilizing the service channel of micro-base station to be realized is scanned.
In embodiments of the present invention, upper level network element can for the common RNC in the base station in the network architecture shown in Fig. 1, or
The OSS (Operation Support System, OSS) that these base stations are common.
As one embodiment of the present of invention, working frequency points and the community that can specify according to its upper level network element are swept
Retouch, wherein, it is intended that working frequency points can determine according to the working frequency points of this micro-base station, it is intended that community can also be according to this
The identical networking situation of micro-base station determines, can be this macrocell residing for micro-base station.
As another embodiment of the present invention, it is also possible to without the upper level network element invisible scanning condition of micro-base station, but right
Wireless environment residing for micro-base station carries out full band scan.
In the present embodiment, scanning process is as it is shown on figure 3, the wave filter 31 through micro-base station exports to judging module
32, its decision threshold can be system default or user is arranged voluntarily, by judging module 32, and little higher than this decision threshold
District is judged as being efficient cell, then by parsing module 33, this community is carried out system message demodulation, obtains the little of this community
The information such as district's mark, working frequency points and scrambler, are sent to upper level network element eventually through sending module 34 by scanning result.
In S202, described scanning result is reported upper level network element by described micro-base station, includes in described scanning result
The signal intensity of the community that described receiver scans, so that described upper level network element is determined described according to described scanning result
The community that micro-base station signal strength is the strongest, the configuration parameter of Bing Jianggai community is allocated to described micro-base station.
After scanning result is reported its upper level network element by micro-base station, upper level network element can identify according to this scanning result
Go out the community the strongest to this micro-base station signal strength, based on the configuration parameter of this community, the community in configuration parameter is marked
Know the cell ID being revised as this micro-base station, thus this set configuration parameter amended is allocated to this micro-base station, so that this is micro-
Base station goes into operation operation according to this set configuration parameter.
Specifically, in the upper level network element of micro-base station, the flow process carrying out parameter configuration for micro-base station can be as shown in Figure 4:
In S401, receive the scanning result that micro-base station reports, described scanning result includes this micro-base station by connecing
The signal intensity of the community that receipts machine scans.
In S402, according to described scanning result, determine the community the strongest to described micro-base signal intensity.
Specifically, upper level network element can get the cell ID of the strongest community of signal intensity from scanning result, from
And determine the community the strongest to micro-base station signal strength.
In S403, obtain the configuration parameter of the described community the strongest to described micro-base station signal strength.
In S404, the configuration parameter got is allocated to described micro-base station so that described micro-base station according to described in obtain
The configuration parameter got runs.
Specifically, after S403 gets the configuration parameter of the community the strongest to micro-base station signal strength, by should
Cell ID in configuration configuration parameter is revised as the cell ID of micro-base station, thus generates the configuration parameter of micro-base station.
In the present embodiment, when upper level network element is after being configured with configuration parameter for micro-base station, upper level network element is also by inciting somebody to action
The cell ID of this micro-base station is associated with the cell ID of the community the strongest to this micro-base station signal strength, ensures with the moment
Above-mentioned two base station is configured with identical configuration parameter, and the configuration parameter of once the strongest to this micro-base station signal strength community is sent out
Given birth to change, then the configuration parameter of this micro-base station is also reconfigured by upper level network element, makes the configuration parameter of micro-base station also make
Respective change.
Generally, the community that micro-base station signal strength is the strongest is carries out the macrocell of identical networking with this micro-base station.On
Stating after the association process of cell ID can be such that the configuration parameter generating micro-base station, in upper level network element, storage is corresponding
Incidence relation table, as shown in table 1:
Table 1
| Dominant base (macro base station) | Association base station (micro-base station) |
| Sitename(i)+CellID(i) | Sitename(j)+CellID(j) |
| ...... | ...... |
Wherein, Site name(i) represent i-th base station name, Cell ID(i) represent the community corresponding with i-th base station
Mark.
By the embodiment shown in Fig. 4, according to the scanning result of micro-base station, upper level network element be automatically this micro-base station generate with
The configuration parameter of its relevant macro base station, it is not necessary to extra configuration operation, thus simplify network planning operation, it is achieved that micro-
Base station plug and play truly.
It should be noted that embodiment described in Fig. 4 is applicable to micro-base station deployment in the overlay area of multiple macro base stations
Situation, if micro-base station is deployed only in the overlay area of a macro base station, the configuration parameter of the most micro-base station is directly and this grand base
Stand identical configuration parameter (except cell ID)；And if micro-base station is not detected by other in receiver scanning process
Community, the mode configuration parameter that the most micro-base station is planned automatically according to common micro-base station, i.e. opened for this micro-base station selected
The configuration parameter of the macro base station of work, automatically generates the configuration parameter of this micro-base station, and micro-base station is according to the configuration parameter automatically generated
Go into operation.
In S203, described micro-base station, after the configuration parameter configured according to described upper level network element runs, judges respectively
Whether each Traffic Channel is currently carried out service bearer by described micro-base station.
In S204, for currently not carried out the Traffic Channel of service bearer by described micro-base station, described micro-base station obtains
The UE uplink interference estimator to described micro-base station in this Traffic Channel, and at the upward signal of this Traffic Channel received
Middle counteracting described uplink interference estimator.
In the present embodiment, for currently not carried out the Traffic Channel of service bearer by micro-base station, then this micro-base station is not required to
Receive the upward signal of the UE accessing this Traffic Channel, at this time, it may be necessary to this part upward signal is eliminated.Due to logical
Cross the parameter configuration of upper level network element, micro-base station with its residing for the identical configuration parameter of the macro base station employing of macrocell run, therefore,
For same traffic channel, use the micro-base station similarly configuring parameter the most identical to the laws of use of Traffic Channel with macro base station,
This micro-base station and macro base station can also be considered as that identical UE sends for the testing result of same Traffic Channel.Based on above-mentioned
Similarly configuring the running environment of parameter, micro-base station can be believed in this business by this Traffic Channel carries out the base station of service bearer
The upward signal from UE detected on road, estimates the UE uplink interference estimator to this micro-base station, thus micro-
The upward signal of this Traffic Channel that base station receives is offset this part uplink interference estimator, reaches to reduce uplink interference
Purpose.
Specifically, at current time t, for micro-base station, in certain Traffic Channel n, by the sky of this micro-base station
Line can receive the upward signal S_in(t of all UE in the range of this micro-base station operation), simultaneously for the most not micro-by this
Base station carries out the UE of service bearer, and micro-base station can be from the reported upper level network element in base station that this part UE carries out service bearer
Related data in, get this part UE upward signal to its carrying base station, and this upward signal be estimated as this part
The UE upward signal to this micro-base station, thus get the upward signal summation ∑ S ' _ out of this part UE, the up letter of this part
Number summation is the UE uplink interference estimator to micro-base station in this Traffic Channel, therefore, by S_in(t)-∑ S ' _ out, i.e.
Achieve the counteracting to the uplink interference signal in this Traffic Channel.
Method described in Fig. 2 embodiment needs each base station each Traffic Channel of cycle detection, to keep uplink interference signal
Elimination, one of them cyclic process of base station can be as shown in Figure 5:
In S501, initialize Traffic Channel n=0.
In S502, it is judged that whether Traffic Channel n is carried out service bearer by this base station, it is then n=n+1, repeats
S502, otherwise performs S503.
In S503, obtain the uplink interference estimator to Traffic Channel n.
In S504, obtain in Traffic Channel n the upward signal of all UE in the range of this micro-base station operation.
In S505, upward signal is offset uplink interference estimator.
In S506, n=n+1, if n=n(max), then n=0, repeat S502.
In the present embodiment, the receiver of micro-base station is in running status all the time, for carrying out up channel in real time
Detection.
In the embodiment of the present invention, micro-base station with its residing for the identical configuration parameter of the macro base station employing of macrocell run,
Under this service condition, micro-base station passes through the uplink interference estimating in time to be produced by UE, thus in the upward signal received
Deduct uplink interference signal, thereby reduce the uplink interference produced by UE, improve network throughput.
Meanwhile, the network rack disposed with frequency with one or more micro-base station of superposition in its coverage based on macro base station
Structure, for descending interference present in base station operation process, it is possible to come really according to the signal propagation losses between UE and each base station
This UE fixed and one of them base station carry out service connection, thus close the base station being connected with this UE non-traffic at associated traffic channel
On transmitter, reduce network downstream interference, improve network throughput.
Fig. 6 shows the realization stream of the interference control method of the same frequency network of macro and micro base stations that another embodiment of the present invention provides
Journey, in the present embodiment, executive agent is the upper level network element of each base station of identical networking, and details are as follows:
In S601, the described base station that reception base station reports carries out the detection knot of signal output detections to each Traffic Channel
Really, described base station includes macro base station or micro-base station.
In the present embodiment, each base station all can carry out signal output detections to each Traffic Channel successively, to get
This base station testing result to each Traffic Channel, and testing result is reported one by one its upper level network element.
In S602, determine whether described base station carries out business to UE in described Traffic Channel according to described testing result
Carrying.
In the testing result that each base station reports, if the testing result that there is certain Traffic Channel is more than pre-determined threshold,
Then show that this base station detects UE in this Traffic Channel and accesses, otherwise, show the not inspection in this Traffic Channel of this base station
Measure UE to access.
Specifically, according to the difference of detection object, the testing result got can include following any one: in business
The Signal to Interference plus Noise Ratio that detects on channel (Signal to Interferenceplus Noise Ratio,
SINR), signal-to-noise ratio (Signalto Interference Ratio, SIR), Reference Signal Received Power (Reference
Signal Receiving Power, RSRP).As a example by SINR, when there being UE to access this Traffic Channel, in this Traffic Channel
The SINR detected will increase a lot, higher than a certain predetermined threshold value；And when not having UE to access this Traffic Channel, base station is at this
Only detecting the end in Traffic Channel makes an uproar.If testing result is SIR or RSRP, substantially it is also based on identical above-mentioned principle
Determine whether UE access service channel.
Thus, the testing result reported according to each base station received, upper level network element i.e. can be in all Traffic Channels
In determine and be simultaneously tested with, by more than one base station in multiple base stations, the Traffic Channel that UE accesses.
In implementing, form as shown in table 2 can be set up in upper level network element, for managing the detection that base station reports
As a result, wherein, Site ID is Base Station Identification, and Cell ID is cell ID, D(i) be the n-th Traffic Channel signal output
Value.
Table 2
And the testing result that each base station reported, flow process as shown in Figure 7 all can be used to come in real time to table 2
Carry out storing, updating:
S701: read the signal value output D(i of i-th Traffic Channel in testing result), i=1 during initialization.
S702: judge D(i) whether more than pre-determined threshold, it is to perform S703, otherwise i+1, repeat S701.
S703: by D(i) and report the Base Station Identification of base station of this channel detection result and the cell ID of correspondence thereof to deposit
Store up in the relevant position of table 2, i+1 afterwards, repeat S701.
By step shown in Fig. 7, until having read all of signal value output in the testing result that this base station reports, the completeest
The once storage to table 2 or renewal are become.
Table 2 is after foundation completes, and upper level network element can report situation according to base station, table 2 is carried out real-time renewal,
Safeguard, and once have new UE to carry out service connection, it is also possible to found in time, so that the UE that upper level network element is new in time is true
Determine service bearer base station.
As one embodiment of the present of invention, S702 judges D(i) whether can also be by each more than the step of pre-determined threshold
Base station performed before channel detection result being reported, and each base station is by judging the signal of its each Traffic Channel detected
Output valve D(i) whether more than pre-determined threshold, thus voluntarily testing result is filtered, and in the testing result after filtering
Offering upper level network element, upper level network element is performed without the judge process of S702, directly the testing result got is stored in table 2
Relevant position.
In the present embodiment, when being tested with the base station only one of which that UE accesses in certain Traffic Channel, the most obviously,
What this UE was carried out in this Traffic Channel service bearer must be this base station, and when being tested with UE in certain Traffic Channel
The base station accessed is when having multiple, then each base station received according to the S601 testing result to each Traffic Channel, more than this
Being defined as carrying base station by base station maximum for the testing result about this Traffic Channel in individual base station, this carrying base station is for this
UE carries out service bearer in this Traffic Channel.
In S603, described base station is not carried out to the described Traffic Channel of service bearer to UE, notify that described base station is closed
Close the transmitting power in this Traffic Channel.
After determining base station and do not carry out UE all Traffic Channels of service bearer, its transmitter is closed in notice base station
This Traffic Channel is launched power, thus, does not haves this UE and set up service connection with multiple base stations, a business simultaneously
There is multi wireless links on channel simultaneously, produce network interferences, and then cause the situation of wherein part radio link failure to go out
Existing, improve network throughput.
Fig. 8 shows the realization stream of the interference control method of the same frequency network of macro and micro base stations that another embodiment of the present invention provides
Cheng Tu, in the present embodiment, the executive agent of flow process is the base station (macro base station or micro-base station) in Fig. 1, and details are as follows:
In S801, base station carries out signal output detections to each Traffic Channel, obtains testing result.
In the present embodiment, base station, according to Traffic Channel number, carries out signal output detections to each Traffic Channel successively, obtains
Get the testing result of each Traffic Channel.Wherein, testing result can include following any one: detects on a traffic channel
SINR, SIR, the RSRP arrived.
As one embodiment of the present of invention, the testing result that S801 can also be got by base station filter after again
Report its upper level network element.Specifically, whether base station is more than by the testing result judging its each Traffic Channel detected
Pre-determined threshold, thus voluntarily testing result is filtered, the testing result that will be greater than pre-determined threshold reports upper level network element.
In S802, described testing result is reported the upper level network element of described base station by described base station, so that described higher level
Network element, according to described testing result, determines whether described base station carries out service bearer to UE in described Traffic Channel.Notice institute
State whether base station carries out service bearer.
In the present embodiment, after the channel detection result that S801 generates is reported its upper level network element by base station, higher level
Other base stations under testing result that network element can report according to this base station got and this upper level network element are according to identical
The testing result that reports of method, as described in present invention, determine whether base station is entered UE in this Traffic Channel
Row service bearer.
Wherein, when being tested with only one, this base station that UE accesses in certain Traffic Channel, the most obviously, to this UE
Carry out service bearer in this Traffic Channel must be this base station.And when being tested with what UE accessed in certain Traffic Channel
Base station except this base station, also have other base stations time, then the upper level network element of these base stations according to receive about this Traffic Channel
All testing results, be defined as UE is entered by base station maximum for the testing result about this Traffic Channel in these multiple base stations
Row service bearer.
In the present embodiment, for certain Traffic Channel, if this base station is when S901 carries out signal output detections, not inspection
Measure the testing result more than pre-determined threshold, then it represents that this base station is current does not hold in the business of this Traffic Channel enterprising industry UE
Carry, then its receiver transmitting power in this Traffic Channel can directly be closed in this base station.
In S803, described base station not being carried out to the described Traffic Channel of service bearer to UE, described base station receives institute
State the notice of upper level network element, close its transmitting power in this Traffic Channel.
In the present embodiment, need not carry out UE the Traffic Channel of service bearer for this base station, then this base station is closed
Receiver transmitting power in this Traffic Channel, i.e. this base station is not launched in this Traffic Channel, reduces whole with frequency
The down transmitting power of group network system, and then reduce descending interference, add the handling capacity of system.
The embodiment of the present invention is disposed with frequency based on macro base station and one or more micro-base station of superposition in its coverage
The network architecture, it is possible to determine that this UE and one of them base station carry out business according to the signal propagation losses between UE and each base station
Connect, thus close the base station being connected with this UE non-traffic transmitter on associated traffic channel, reduce network interferences, improve
Network throughput.
Fig. 9 shows the structured flowchart of the jamming decision of the same frequency network of macro and micro base stations that the embodiment of the present invention provides,
As it is shown in figure 9, this device includes upper level network element and the multiple micro-base station being connected with this upper level network element, it is used for being separately operable this
The interference control method of the same frequency network of macro and micro base stations described in invention Fig. 2 embodiment and Fig. 4 embodiment of the present invention.For the ease of
Illustrate, illustrate only part related to the present embodiment.
With reference to Fig. 9, in micro-base station, this device includes:
Scanning element 901, scans its residing wireless environment, obtains scanning result.
First reports unit 902, receives the described scanning result that described scanning element 901 sends, and by described scanning knot
Fruit reports upper level network element, includes the signal intensity of the community scanned in described scanning result, so that described upper level network element
The community the strongest to described micro-base station signal strength is determined, the configuration parameter configuration of Bing Jianggai community according to described scanning result
To described micro-base station.
Judging unit 903, after the configuration parameter configured according to described upper level network element runs, judges each business respectively
Whether channel is currently carried out service bearer by described micro-base station.
Uplink interference offset unit 904, according to the judged result of described judging unit 903, for current not by described micro-
Base station carries out the Traffic Channel of service bearer, obtains the UE uplink interference estimator to described micro-base station in this Traffic Channel,
And in the upward signal of this Traffic Channel received, offset described uplink interference estimator.
Alternatively, described scanning element 901 specifically for:
Scan working frequency points or community that described upper level network element is specified.
Alternatively, described scanning element 901 specifically for:
Wireless environment residing for described micro-base station is carried out full band scan.
In upper level network element, this device includes:
Scanning result receives unit 905, receives the scanning result that micro-base station reports, and includes described in described scanning result
The signal intensity of the community that micro-base station scans arrives；
First determines unit 906, receive described scanning result receive unit 905 send described scanning result, and according to
Described scanning result, determines the community the strongest to described micro-base station signal strength；
Acquiring unit 907, according to described first determine that unit 906 determines described to described micro-base station signal strength
Strong community, obtains the configuration parameter of the described community the strongest to described micro-base station signal strength；
Dispensing unit 908, is allocated to described micro-base station by the configuration parameter that described acquiring unit 907 gets, so that institute
State micro-base station according to described in the configuration parameter that gets run.
Alternatively, described dispensing unit 908 specifically for:
It is allocated to after cell ID in the described configuration parameter got is revised as the cell ID of described micro-base station
Described micro-base station.
Alternatively, described device also includes:
Associative cell, for by the cell ID of the described community the strongest to described micro-base station signal strength and described micro-base
The cell ID stood is associated, and ensures described micro-base station and the described community the strongest to described micro-base station signal strength with the moment
It is configured with identical configuration parameter.
The embodiment of the present invention is disposed with frequency based on macro base station and one or more micro-base station of superposition in its coverage
The network architecture, by estimating the uplink interference produced by UE in time, thus deducts in the upward signal that base station receives
Row interference signal, thereby reduces the uplink interference produced by UE, improves network throughput.
Figure 10 shows the structured flowchart of the jamming decision of the same frequency network of macro and micro base stations that the embodiment of the present invention provides,
As shown in Figure 10, this device includes upper level network element and the multiple base stations being connected with this upper level network element, including macro base station or micro-
Base station, for being separately operable the dry of same frequency network of macro and micro base stations described in Fig. 6 embodiment of the present invention and Fig. 7 embodiment of the present invention
Disturb control method.For convenience of description, illustrate only part related to the present embodiment.
With reference to Figure 10, in upper level network element, this device includes:
Testing result receives unit 1001, and the described base station that reception base station reports carries out signal output to each Traffic Channel
The testing result of detection, described base station includes macro base station or micro-base station.
Second determines unit 1002, receives described testing result and receives the described testing result that unit 1001 sends, and root
Determine whether described base station carries out service bearer to UE in described Traffic Channel according to described testing result.
For described second, notification unit 1003, determines that unit determines that the 1002 described base stations gone out do not carry out business to UE and hold
The described Traffic Channel carried, notifies that the transmitting power in this Traffic Channel is closed in described base station.
In a base station, this device includes:
Detector unit 1004, carries out signal output detections to each Traffic Channel, obtains testing result.
Second reports unit 1005, receives the testing result that described detector unit 1004 sends, and by described testing result
Report the upper level network element of described base station, so that described upper level network element is according to described testing result, determine that whether described base station exists
In described Traffic Channel, UE is carried out service bearer.
Closing unit 1006, does not carries out the described Traffic Channel of service bearer, receives on described for described base station to UE
The notice of level network element, closes its transmitting power in this Traffic Channel.
The embodiment of the present invention is disposed with frequency based on macro base station and one or more micro-base station of superposition in its coverage
The network architecture, it is possible to determine that this UE and one of them base station carry out business according to the signal propagation losses between UE and each base station
Connect, thus close the base station being connected with this UE non-traffic transmitter on associated traffic channel, reduce network interferences, improve
Network throughput.
Figure 11 shows the hardware configuration of the jamming decision of the same frequency network of macro and micro base stations that the embodiment of the present invention provides
Block diagram, as shown in figure 11, this device includes upper level network element and the multiple base stations being connected with this upper level network element, for transporting respectively
The interference control method of the same frequency network of macro and micro base stations described in row Fig. 2 of the present invention embodiment and Fig. 4 embodiment of the present invention.In order to
It is easy to explanation, illustrate only part related to the present embodiment.
With reference to Figure 11, in micro-base station 111, this device includes processor 1111, memorizer 1112, bus 1113 and antenna
1114,
Wherein said processor 1111, described memorizer 1112 and described antenna 1114 carry out phase by described bus 1113
Communication between Hu；
Described memorizer 1112, is used for storing program；
Described processor 1111 is for performing the program of storage in described memorizer 1112；
Described program when executed, is used for:
Scan the wireless environment residing for described micro-base station, obtain scanning result；
Described antenna 1114, for described scanning result is reported upper level network element, includes scanning in described scanning result
The signal intensity of the community arrived, so that described upper level network element is determined described micro-base station signal strength according to described scanning result
The strongest community, the configuration parameter of Bing Jianggai community is allocated to described micro-base station；
Described program is additionally operable to:
After the configuration parameter configured according to described upper level network element runs, the most whether judge each Traffic Channel respectively
Service bearer is carried out by described micro-base station；
For currently not carried out the Traffic Channel of service bearer by described micro-base station, obtain in this Traffic Channel UE to institute
State the uplink interference estimator of micro-base station, and in the upward signal of this Traffic Channel received, offset described uplink interference estimate
Metering.
Alternatively, wireless environment residing for the described micro-base station of described scanning particularly as follows:
Scan working frequency points or community that described upper level network element is specified.
Alternatively, wireless environment residing for the described micro-base station of described scanning particularly as follows:
Wireless environment residing for described micro-base station is carried out full band scan.
In upper level network element 112, this device includes processor 1121, memorizer 1122, bus 1123 and antenna 1124,
Wherein said processor 1121, described memorizer 1122 and described antenna 1124 carry out phase by described bus 1123
Communication between Hu；
Described memorizer 1122, is used for storing program；
Described antenna 1124, for receiving the scanning result that micro-base station reports, includes described micro-base in described scanning result
The signal intensity of the community that station scans；
Described processor 1121 for performing the program of storage in described memorizer 1122, described program when executed,
For:
According to the described scanning result of described antenna 1124, determine the community the strongest to described micro-base station signal strength；
Obtain the configuration parameter of the described community the strongest to described micro-base station signal strength；
The configuration parameter got is allocated to described micro-base station so that described micro-base station according to described in the configuration that gets
Parameter is run.
Alternatively, described the configuration parameter got be allocated to described micro-base station include:
It is allocated to after cell ID in the described configuration parameter got is revised as the cell ID of described micro-base station
Described micro-base station.
Alternatively, described program is additionally operable to:
Cell ID by the cell ID of the described community the strongest to described micro-base station signal strength Yu described micro-base station
It is associated, ensures that the cell configuration that described micro-base station signal strength is the strongest is had identical with described by described micro-base station with the moment
Configuration parameter.
The embodiment of the present invention is disposed with frequency based on macro base station and one or more micro-base station of superposition in its coverage
The network architecture, by estimating the uplink interference produced by UE in time, thus deducts in the upward signal that base station receives
Row interference signal, thereby reduces the uplink interference produced by UE, improves network throughput.
Figure 12 shows the hardware configuration of the jamming decision of the same frequency network of macro and micro base stations that the embodiment of the present invention provides
Block diagram, as shown in figure 12, this device includes upper level network element and the multiple base stations being connected with this upper level network element, including macro base station
Or micro-base station, for being separately operable the same frequency network of macro and micro base stations described in Fig. 6 embodiment of the present invention and Fig. 7 embodiment of the present invention
Interference control method.For convenience of description, illustrate only part related to the present embodiment.
With reference to Figure 12, in upper level network element 121, this device includes processor 1211, memorizer 1212, bus 1213 and sky
Line 1214,
Wherein said processor 1211, described memorizer 1212 and described antenna 1214 carry out phase by described bus 1213
Communication between Hu；
Described memorizer 1212, is used for storing program；
Described processor 1211 is for performing the program of storage in described memorizer 1212；
The described base station that described antenna 1214 reports for receiving base station carries out signal output detections to each Traffic Channel
Testing result, described base station includes macro base station or micro-base station；
Described program when executed, is used for:
Determine whether described base station carries out service bearer to UE in described Traffic Channel according to described testing result；
Described base station is not carried out to the described Traffic Channel of service bearer to UE, described antenna 1214 is used for notifying described
The transmitting power in this Traffic Channel is closed in base station.
In base station 122, this device includes processor 1221, memorizer 1222, bus 1223 and antenna 1224,
Wherein said processor 1221, described memorizer 1222 and described antenna 1224 carry out phase by described bus 1223
Communication between Hu；
Described memorizer 1222, is used for storing program；
Described processor 1221 for performing the program of storage in described memorizer 1222, described program when executed,
For:
Each Traffic Channel is carried out signal output detections, obtains testing result；
Described antenna 1224 for reporting the upper level network element of described base station by described testing result, so that described higher level's net
Unit, according to described testing result, determines whether described base station carries out service bearer to UE in described Traffic Channel；
Described base station is not carried out to the described Traffic Channel of service bearer to UE, described antenna 1224 is used for receiving described
The notice of upper level network element, closes its transmitting power in this Traffic Channel.
The embodiment of the present invention is disposed with frequency based on macro base station and one or more micro-base station of superposition in its coverage
The network architecture, it is possible to determine that this UE and one of them base station carry out business according to the signal propagation losses between UE and each base station
Connect, thus close the base station being connected with this UE non-traffic transmitter on associated traffic channel, reduce network interferences, improve
Network throughput.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all essences in the present invention
Any amendment, equivalent and the improvement etc. made within god and principle, should be included within the scope of the present invention.
Claims (9)
1. the interference control method of a same frequency network of macro and micro base stations, it is characterised in that including:
Its residing wireless environment of micro-base station scans, obtains scanning result；
Described scanning result is reported upper level network element by described micro-base station, includes the community that scans in described scanning result
Signal intensity, so that described upper level network element is determined the strongest little of described micro-base station signal strength according to described scanning result
District, the configuration parameter of Bing Jianggai community is allocated to described micro-base station；
Described micro-base station, after the configuration parameter configured according to described upper level network element runs, judges that each Traffic Channel is worked as respectively
Before whether carried out service bearer by described micro-base station；
For currently not carried out the Traffic Channel of service bearer by described micro-base station, described micro-base station obtains in this Traffic Channel
The UE uplink interference estimator to described micro-base station, and offset described up in the upward signal of this Traffic Channel received
Interference Estimation amount.
2. the method for claim 1, it is characterised in that its residing wireless environment of described micro-base station scans particularly as follows:
Working frequency points that upper level network element described in described micro-base station scans is specified or community.
3. the method for claim 1, it is characterised in that its residing wireless environment of described micro-base station scans particularly as follows:
Described micro-base station carries out full band scan to its residing wireless environment.
4. a micro-base station, it is characterised in that including:
Scanning element, for scanning its residing wireless environment, obtains scanning result；
First reports unit, for receiving the described scanning result that described scanning element sends, and is reported by described scanning result
To upper level network element, described scanning result includes the signal intensity of the community scanned, so that described upper level network element is according to institute
Stating scanning result and determine the community the strongest to described micro-base station signal strength, the configuration parameter of Bing Jianggai community is allocated to described
Micro-base station；
Judging unit, after running at the configuration parameter configured according to described upper level network element, judges that each business is believed respectively
Whether road is currently carried out service bearer by described micro-base station；
Uplink interference offset unit, for the judged result according to described judging unit, for currently not entered by described micro-base station
The Traffic Channel of row service bearer, obtains the UE uplink interference estimator to described micro-base station in this Traffic Channel, and is connecing
The upward signal of this Traffic Channel received is offset described uplink interference estimator.
Micro-base station the most as claimed in claim 4, it is characterised in that described scanning element specifically for:
Scan working frequency points or community that described upper level network element is specified.
Micro-base station the most as claimed in claim 4, it is characterised in that described scanning element specifically for:
Wireless environment residing for described micro-base station is carried out full band scan.
7. a micro-base station, it is characterised in that described micro-base station includes processor, memorizer, bus and antenna, wherein said place
Reason device, described memorizer carry out mutual communicating with described antenna by described bus；
Described memorizer, is used for storing program；
Described processor is for performing the program of storage in described memorizer；
Described program when executed, is used for:
Scan the wireless environment residing for described micro-base station, obtain scanning result；
Described antenna, for described scanning result is reported upper level network element, includes the community scanned in described scanning result
Signal intensity so that described upper level network element is determined the strongest little of described micro-base station signal strength according to described scanning result
District, the configuration parameter of Bing Jianggai community is allocated to described micro-base station；
Described program is additionally operable to:
After the configuration parameter configured according to described upper level network element runs, judge that each Traffic Channel is current whether by institute respectively
State micro-base station and carry out service bearer；
For currently not carried out the Traffic Channel of service bearer by described micro-base station, obtain in this Traffic Channel UE to described micro-
The uplink interference estimator of base station, and in the upward signal of this Traffic Channel received, offset the estimation of described uplink interference
Amount.
Micro-base station the most as claimed in claim 7, it is characterised in that the wireless environment residing for the described micro-base station of described scanning is concrete
For:
Scan working frequency points or community that described upper level network element is specified.
Micro-base station the most as claimed in claim 7, it is characterised in that the wireless environment residing for the described micro-base station of described scanning is concrete
For:
Wireless environment residing for described micro-base station is carried out full band scan.
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| PCT/CN2013/076400 WO2014190506A1 (en) | 2013-05-29 | 2013-05-29 | Interference control method and device for networking of macro and micro base station at same frequency |
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| CN106559816A (en) * | 2015-09-29 | 2017-04-05 | 中兴通讯股份有限公司 | Area interference detection method and device |
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| CN101883416A (en) * | 2009-05-07 | 2010-11-10 | 比克奇设计有限公司 | Methods and devices for reducing interference of a femtocell in an uplink |
| CN102711124A (en) * | 2012-06-08 | 2012-10-03 | 北京邮电大学 | Power allocation method for femtocell in double-layer network |
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| CN101790171A (en) * | 2009-01-23 | 2010-07-28 | 华为技术有限公司 | Method and system for adjusting data frame between micro base station and macro base station and micro base station configuration center |
| CN101820683A (en) * | 2009-02-26 | 2010-09-01 | 中兴通讯股份有限公司 | Method for transmitting interference control information |
| US9565011B2 (en) * | 2009-06-04 | 2017-02-07 | Qualcomm Incorporated | Data transmission with cross-subframe control in a wireless network |
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| CN101883416A (en) * | 2009-05-07 | 2010-11-10 | 比克奇设计有限公司 | Methods and devices for reducing interference of a femtocell in an uplink |
| CN102711124A (en) * | 2012-06-08 | 2012-10-03 | 北京邮电大学 | Power allocation method for femtocell in double-layer network |
| CN102711123A (en) * | 2012-06-08 | 2012-10-03 | 北京邮电大学 | Method for inhibiting interference in intensively-deployed household base station network |
| CN102960014A (en) * | 2012-08-30 | 2013-03-06 | 华为技术有限公司 | A method, a device and a system for processing communication service |
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