CN103139917B - Cause recognition methods, the apparatus and system of the user equipment of uplink interference - Google Patents
Cause recognition methods, the apparatus and system of the user equipment of uplink interference Download PDFInfo
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- CN103139917B CN103139917B CN201110386837.0A CN201110386837A CN103139917B CN 103139917 B CN103139917 B CN 103139917B CN 201110386837 A CN201110386837 A CN 201110386837A CN 103139917 B CN103139917 B CN 103139917B
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- 238000005259 measurement Methods 0.000 description 12
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
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- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The invention discloses a kind of recognition methods for the user equipment for causing uplink interference, apparatus and system.Wherein, this method includes：Macro base station receive low power nodes LPN report it is up be disturbed degree information, wherein, the up degree information that is disturbed includes：LPN is disturbed degree information in certain period of time on each resource units；Macro base station is disturbed degree information and user equipment that the macro base station is dispatched within the above-mentioned period on each resource units according to up, identifies the user equipment that uplink interference is caused to above-mentioned LPN.Realized by the present invention under the cell Coexistence Situation that macrocell and LPN are covered, the identification of the user equipment of uplink interference is caused to LPN.
Description
Technical field
The present invention relates to the communications field, in particular to a kind of recognition methods for the user equipment for causing uplink interference,
Apparatus and system.
Background technology
With the development of mobile communication and information technology, user is growing to the demand of data service.Main flow at present
Mobile communications network, either using global system for mobile communications (Global System For Mobile
Communication, referred to as GSM) and/GPRS (General Packet Radio Service, referred to as
GPRS the 2/2.5th third generation mobile communication network), or using UMTS (Universal Mobile
Telecommunications System, referred to as UMTS) third generation mobile communications network, be all to be advised by operator is unified
Draw, the homogeneous network (Homogeneous Network) of deployment.Homogeneous network is once disposed, the network capacity in certain area
Just secure.
In order to meet the data traffic requirement of rapid growth, operator needs to dispose more websites.A however, side
Face, the expense for the isomorphism macro network website disposed and upheld one's heritage are higher；On the other hand, even in the basis of legacy network
On deploy substantial amounts of new site, its network capacity also secures therewith, it is impossible to adapts to the business load in some areas in network
With the change demand of service quality (Quality of Service, referred to as QoS).
Some low power nodes (Lower is disposed in the design of 4th third-generation mobile communication on the basis of original homogeneous network
PowerNode, referred to as LPN), including low-power micro-base station (Pico eNB), Home eNodeB (H eNB) and via node
(Relay) etc..Because these LPN transmission power is than relatively low, therefore relative to the base station of Incumbent unified plan
The macrocell (Macro Cell) that (evolved NodeB, referred to as eNB) is covered, the cell that these LPN are covered can be referred to as
For Microcell (Micro Cell) or cell (Small Cell) or low power nodes cell (LPN Cell).
LPN deployment is more flexible.For example, LPN can be flexibly deployed in (as schemed by hot spot region according to number of users
Shown in 1), so as to effectively increase the load of macrocell in the network capacity of hot spot region, mitigation hot spot region,.LPN is also
Cell edge (as shown in Figure 2) can be deployed in, is used so as to effectively strengthen the covering of cell edge, improve cell edge
The QoS at family.LPN can also dispose (as shown in Figure 3) indoors, so as to effectively strengthen in-door covering, improve it is indoor
The QoS at family, the high traffic demand for meeting indoor user, while mitigate the load of macrocell,.
Between the base station of heterogeneous network, such as between Macro eNB and Pico eNB, it can also dispose and establish X2 interface, base station
The work that some interactive information for having demand are more coordinated for network can be transmitted by the interface.For example, carrying load can be transmitted
Load information (LOAD INFORMATION) message with interference coordination information, report requested measurement result resource status
Update (RESOURCE STATUS UPDATE) message, etc..
According to the radio link quality between base station, user equipment (User Equipment, referred to as UE) access is adapted to
Cell to be serviced.Transmission channel between UE and base station can be divided from two angles of time domain and frequency domain：From time domain
From the point of view of, (each base station is its label (System Frame Number System to maximum time quantum a length of 10ms when being radio frames
Frame Number, abbreviation SFN) to be identified), it is divided into 10 1ms subframe, and each subframe is divided into 2 again
0.5ms time slot；From the point of view of frequency domain, a unit resource is 180kHz, and it is made up of 12 sub- carrier waves.So, for
For up, 1 time slot in time domain, a unit resource on frequency domain, a Physical Resource Block (Physical can be described as
Resource Block, referred to as PRB), base station can dispatch 1 UE on 1 PRB and send upward signal.
Pico eNB be it is a kind of by operator deployment, with the framework of macro base station (Macro eNB) and functionally similar
LPN.Compared to Macro eNB, Pico eNB transmission power is relatively low, therefore the signal cover provided is also smaller；
Pico eNB can be deployed in Macro eNB coverage or Macro eNB cell edge.
When providing the UE (be referred to as MUE) of service by Macro eNB near Pico cells, (the corresponding MUE is also
Distance Macro eNB are distant), Macro eNB are the signal that can smoothly receive MUE, and it can dispatch MUE with larger transmitting
Power sends upward signal.Thus, there can be a kind of interference scene, i.e., because larger MUE transmission power and MUE and Pico
Nearer geographic distance between eNB, MUE upward signal can also be received by Pico eNB, up dry so as to be caused to Pico eNB
Disturb.
It should be noted that on condition that MUE serving cell (or one of serving cell) caused by above-mentioned uplink interference
Carrier frequency is identical with the carrier frequency of Pico eNB certain the Pico cell established or when band segment is identical.But the opposing party
Face, because the less down transmitting powers of Pico eNB, MUE will not receive Pico eNB downstream signal, accordingly also
The information of Pico cells will not be carried in the measurement of transmission to Macro eNB reports, therefore, Macro eNB are not aware that this
MUE is located near Pico eNB.If Macro eNB can not determine which be positioned at Pico cell edges and can be to Pico eNB
Cause the MUE of uplink interference, then even if Macro eNB know that Pico eNB receive uplink interference, Macro eNB can not yet
Set it is appropriate, can avoid or reduce scheduling strategy that interference is produced to Pico eNB.
The content of the invention
Up do is caused to LPN under the cell Coexistence Situation that macrocell and LPN are covered, being identified in correlation technique
The problem of user equipment disturbed, the invention provides a kind of recognition methods for the user equipment for causing uplink interference, device and it is
System, at least to solve the above problems.
According to an aspect of the invention, there is provided a kind of recognition methods for the user equipment for causing uplink interference, including：
Macro base station receive that low power nodes LPN reports it is up be disturbed degree information, wherein, it is described up to be disturbed degree information bag
Include：LPN is disturbed degree information in certain period of time on each resource units；The macro base station is according to described up by dry
Disturb the user equipment that degree information and the macro base station are dispatched within the period on each resource units, identification pair
The LPN causes the user equipment of uplink interference.
Preferably, to the macro base station report the LPN it is described it is up be disturbed degree information, including：The LPN leads to
Overload informational message reports the described of the LPN up to be disturbed degree information.
Preferably, macro base station receive low power nodes LPN report it is up be disturbed before degree information, methods described is also
Including：The macro base station receives the up of frequency domain constituent parts resource in the certain period of time that the LPN is reported and is averagely disturbed journey
Spend information；It is described it is up be averagely disturbed degree information carrying up and be averagely disturbed degree and reach predetermined threshold value when, to
The LPN sends resource status request message, asks the LPN reporting uplinks to be disturbed degree information.
Preferably, macro base station receive that low power nodes LPN reports it is up be disturbed degree information, including：The grand base
Stand and receive the resource status new information that the LPN is returned after the resource status request message is received, wherein, the money
In the state new information of source up degree information is disturbed containing described.
Preferably, it is described it is up be disturbed degree information, in addition to：Indicate the starting radio frames of each resource units
The system frame number SFN at time point；Before identification causes the user equipment (UE) of uplink interference to the LPN, methods described also includes：
Each resource units corresponding with each resource units that the macro base station is determined according to the SFN.
Preferably, methods described also includes：The macro base station preserves the macro base station and user is set within the period
The schedule information of standby up transmission signal.
Preferably, the resource units are 180kHZ in frequency, in time including at least 0.5ms.
According to another aspect of the present invention, there is provided a kind of identification device for the user equipment for causing uplink interference, including：
Receiving module, for receive that low power nodes LPN reports it is up be disturbed degree information, wherein, it is described up to be disturbed journey
Degree information includes：LPN is disturbed degree information in certain period of time on each resource units；Identification module, for basis
The up use for being disturbed program information and the macro base station and being dispatched within the period on each resource units
Family equipment, identify the user equipment that uplink interference is caused to the LPN.
Preferably, the receiving module, it is additionally operable to receive each unit money of frequency domain in the certain period of time that the LPN is reported
The up of source is averagely disturbed degree information；Described device also includes：Sending module, for up being averagely disturbed journey described
Degree information carry it is up send resource status request message to the LPN when being averagely disturbed degree and reaching predetermined threshold value, please
The LPN reporting uplinks are asked to be disturbed degree information.
Preferably, described device also includes：Determining module, for including instruction institute in the up degree information that is disturbed
When stating the SFN of starting radio-frame time point of each resource units, the macro base station is determined according to the SFN with it is described each
Each resource units corresponding to resource units.
According to another aspect of the invention, there is provided a kind of identifying system for the user equipment for causing uplink interference, including：
Low power nodes LPN, for reporting the up of the LPN to be disturbed degree information to macro base station with cycle and/or event mode,
Wherein, the up degree information that is disturbed includes：In certain period of time degree information is disturbed on each resource units；Institute
Macro base station is stated, includes the identification device of the above-mentioned user equipment for causing uplink interference, is reported for receiving low power nodes LPN
Up be disturbed degree information；And according to up degree information and the macro base station of being disturbed in the period
The user equipment dispatched on inherent each resource units, identifies the user equipment that uplink interference is caused to the LPN.
By the present invention, low power nodes (LPN) to macro base station (Macro eNB) report its on each resource units it is suffered
Uplink interference degree information, macro base station determine its LPN be disturbed resource units on dispatch MUE (i.e. macro base station scheduling
UE), identify the MUE that low power nodes are caused with uplink interference, macro base station can set appropriate scheduling strategy, so as to
Avoid causing the MUE of uplink interference to continue to produce interference to low power nodes.
Brief description of the drawings
Accompanying drawing described herein is used for providing a further understanding of the present invention, forms the part of the application, this hair
Bright schematic description and description is used to explain the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 is the schematic diagram covered according to the LPN focuses of correlation technique；
Fig. 2 is the schematic diagram covered according to the LPN cell edges of correlation technique；
Fig. 3 is the schematic diagram according to the LPN in-door coverings of correlation technique；
Fig. 4 is the schematic diagram according to the identifying system of the user equipment for causing uplink interference of the bright embodiment of this law；
Fig. 5 is the structured flowchart of the identification device of the user equipment for causing uplink interference according to embodiments of the present invention；
Fig. 6 is a kind of knot of the identification device of preferable user equipment for causing uplink interference according to embodiments of the present invention
Structure block diagram；
Fig. 7 is the identification device for the user equipment that another kind according to embodiments of the present invention preferably causes uplink interference
Structured flowchart；
Fig. 8 is the flow chart of the recognition methods of the user equipment for causing uplink interference according to embodiments of the present invention；
Fig. 9 is the flow chart of the recognition methods of according to embodiments of the present invention one user equipment for causing uplink interference；
Figure 10 is the flow chart of the recognition methods of according to embodiments of the present invention two user equipment for causing uplink interference.
Embodiment
Describe the present invention in detail below with reference to accompanying drawing and in conjunction with the embodiments.It should be noted that do not conflicting
In the case of, the feature in embodiment and embodiment in the application can be mutually combined.
Resource units in the embodiment of the present invention are a resource blocks, can refer to a subframe in a PRB or time domain,
A variety of situations such as a unit resource on frequency domain, i.e. a pair of PRB.In embodiments of the present invention, resource units contain frequency domain
One two-dimensional concept of length and time domain length, it refers to a unit resource on frequency domain, i.e., described in background technology
180kHz；At least can be 0.5ms time slot in time domain, resource units are exactly a Physical Resource Block in this case
(PRB) or a 1ms subframe lengths (including 2 PRB), can also be that multiple time slots (include multiple physical resources
Block).
According to embodiments of the present invention, there is provided a kind of identifying system for the user equipment for causing uplink interference, available for
Under the cell Coexistence Situation that macrocell and LPN are covered, identify to LPN (such as low-power micro-base station, Home eNodeB, Yi Jizhong
After node etc.) cause the user equipment of uplink interference.
Fig. 4 is the schematic diagram of the identifying system of the user equipment for causing uplink interference according to embodiments of the present invention, such as Fig. 4
Shown, the system includes：Low power nodes (LPN) 1 and macro base station (Macro eNB) 2.Wherein, low power nodes (LPN) 1, use
In reporting LPN the up of each resource units in certain period of time to be disturbed degree information to cycle and/or event mode,
Wherein, the above-mentioned up degree information that is disturbed includes：In certain period of time degree information is disturbed on each resource units；It is grand
Base station 2, up degree information is disturbed for receive that low power nodes 1 report；And it is disturbed degree information according to up
And the user equipment that macro base station 2 is dispatched in above-mentioned certain period of time on each resource units, identify and low power nodes 1 are made
Into the user terminal of uplink interference.
Under the cell Coexistence Situation that macrocell and LPN are covered, user equipment (MUE) position of service is provided by macrocell
When near the cell that LPN is covered uplink interference can be caused to LPN.Macro base station 2 can adjust to be caused to low power nodes 1
The MUE of row interference, avoids or reduces uplink interferences of the MUE to low power nodes 1.Therefore, low power nodes 1 can be to macro base station
2 report the up of each resource units in certain period of time to be averagely disturbed degree information, and low-power section is received by macro base station 2
Point 1 report it is up be disturbed degree information, macro base station 2 receives up after being disturbed degree information, is disturbed according to up
The user equipment that degree information and macro base station 2 are dispatched in above-mentioned certain period of time on each resource units, is identified to low work(
Rate node 1 causes the user equipment (MUE) of uplink interference.So as to, appropriate scheduling strategy is set by macro base station 2, with reduce or
Avoid the uplink interference to low power nodes 1.
In actual applications, low power nodes 1 can be reported in a timing with cycle and/or event mode to macro base station 2
Interior the up of each resource units is averagely disturbed degree information.For example, low power nodes 1 are according to the signal identification received
Go out on each resource units the annoyance level being subject to and record, and by the interface between macro base station 2 and low power nodes 1,
To transmission load information (Load Information) message of macro base station 2, the uplink interference overload in the message indicates (UL
Interference Overload Indication) or other specification can carry in certain period of time institute on each resource units
By the degree information of uplink interference.
Or low power nodes 1 can report the frequency in certain period of time with cycle and/or event mode to macro base station 2
The up of each unit resource in domain is averagely disturbed degree information, it is necessary to illustrate, in embodiments of the present invention, the list of frequency domain
Position resource is the one-dimensional length that communication standard is used to represent frequency domain.The up average of degree information carrying is averagely disturbed up
When the degree of being disturbed reaches predetermined threshold value, macro base station 2 sends resource status request message to low power nodes 1, asks low-power
The reporting uplink of node 1 is disturbed degree information, after low power nodes 1 receive resource status request message, is sent to macro base station 2
Resource status new information, the up of each resource units in certain period of time is reported averagely to be disturbed degree information.For example,
Each frequency domain for each server carrier that macro base station 2 is provided by its interface between low power nodes 1, reception low power nodes 1
Section (frequency domain unit resource) being averaged within a period of time is disturbed degree, if low power nodes 1 are in some carrier frequency
The uplink interference being subject to is more serious, then macro base station 2 passes through reporting resource state initialization program (Resource Status
Reporting Initiation), request low power nodes 1 measure, report within a period of time on specific resource units by
Annoyance level, low power nodes 1 perform measurement processing after receiving request message, and result is carried in RESOURCE STATUS
Macro base station 2 is sent in UPDATE message.
Macro base station 2 receive that low power nodes 1 report in certain period of time each resource units it is up it is average by
Annoyance level information, and degree information and macro base station 2 are disturbed in above-mentioned certain period of time in each resource list according to up
The user equipment dispatched on position, identify the user terminal that low power nodes 1 are caused with uplink interference.For example, low power nodes 1 will
The information of suffered annoyance level is notified to macro base station 2 on its specific each resource units within a period of time, because macro base station 2 is protected
The schedule information that scheduled which MUE in this corresponding a period of time on each PRB respectively is deposited, so as to by low power nodes 1
The resource units being disturbed are matched with the MUE information dispatched on the resource units, identify and low power nodes 1 are made
Into the MUE of uplink interference, so make it is appropriate, can avoid or reduce the scheduling plan that low power nodes 1 caused with uplink interference
Slightly.
By the embodiment of the present invention, low power nodes report periodically or when certain event occurs to macro base station
Suffered uplink interference degree information on its each resource units, macro base station determine what it was dispatched on disturbed resource units
MUE, the MUE that low power nodes are caused with uplink interference is identified, so as to set appropriate scheduling strategy, to avoid making
MUE into uplink interference continues to produce interference to low power nodes.
According to embodiments of the present invention, additionally provide a kind of identification device for the user equipment for causing uplink interference, can with but
It is not limited to be located in macro base station 2, causes the user equipment of uplink interference to LPN with identification.
Fig. 5 is the structured flowchart of the identification device of the user equipment for causing uplink interference according to embodiments of the present invention, such as
Shown in Fig. 5, the device includes：Receiving module 502 and identification module 504.Wherein, receiving module 502, for receiving low-power section
Point 1 report it is up be disturbed degree information, wherein, the up degree information that is disturbed can include：It is each in certain period of time
Degree information is disturbed on individual resource units；Identification module 504, it is coupled with receiving module 502, is received for basis
It is up to be disturbed the user that program information and macro base station 2 are dispatched in above-mentioned certain period of time on above-mentioned each resource units and set
It is standby, identify the user terminal UE that low power nodes 1 are caused with uplink interference.
In embodiments of the present invention, low power nodes 1 can report each list of frequency domain in certain period of time to macro base station 2
The up of position resource is averagely disturbed degree information, and what receiving module 502 can receive that low power nodes 1 report up is disturbed
Degree information, by identification module 504 according to up program information and the macro base station 2 of being disturbed received in above-mentioned preset time period
The user equipment dispatched on inherent above-mentioned each resource units, identifies the user terminal that low power nodes 1 are caused with uplink interference
UE.For example, low power nodes 1 go out on each resource units the annoyance level being subject to and note according to the signal identification received
Record, and by the interface between macro base station 2 and low power nodes 1, load information (Load is sent to macro base station 2
Information) message, uplink interference overload instruction (the UL Interference Overload in the message
Indication) or other specification can carry the degree information of suffered uplink interference on each resource units in certain period of time.
Or low power nodes 1 can also be reported in certain period of time with cycle and/or event mode to macro base station 2
The up of each unit resource of frequency domain is averagely disturbed degree information.The up flat of degree information carrying is averagely disturbed up
When being disturbed degree and reaching predetermined threshold value, macro base station 2 asks the reporting uplink of low power nodes 1 to be disturbed degree information, low work(
After rate node 1 receives resource status request message, the up of each resource units within a predetermined period of time is reported to macro base station 2
It is disturbed degree information.Therefore, in a preferred embodiment of the embodiment of the present invention, the receiving module in said apparatus
502, it can be also used for the up of each unit resource in certain period of time that reception low power nodes 1 report and be averagely disturbed
Degree information.As shown in fig. 6, said apparatus can also include：Sending module 506, be coupled with receiving module 502, for
What is received is up when being averagely disturbed degree information carrying up and being averagely disturbed degree and reach predetermined threshold value, to low-power
Node 1 sends resource status request message, asks its reporting uplink to be disturbed degree information.
In actual applications, it is not that base station can receive upward signal on each PRB：Provided in each section of frequency domain unit
On source, sub-frame configuration is first depending on, under for example, in 10ms radio frames, some subframes are sub-frame of uplink, the subframe that has is
Row subframe；Secondly base station can only dispatch the UE of demand sub-frame of uplink certain PRB (in a certain frequency domain unit resource, one
Sub-frame of uplink includes 2 PRB, i.e. 2 UE of most schedulable send upward signals) send upward signal, and according to dispatching algorithm,
The UE quantity of schedulable is also limited within a period of time, i.e., the PRB having in sub-frame of uplink is sky.
Moreover, different base station each indicates radio frames to indicate the time with SFN.The possible time synchronized of adjacent base station, also may be used
Can time irreversibility.Operation and maintenance (Operation and Maintenance, abbreviation OAM) system, knows each base station
SFN is specifically set, and then can notify the SFN arranges values of the adjacent base station of each base station.Thus, base station is understood on adjacent base station
Actual itself radio frames corresponding in time of radio frames of SFN instructions.Because macro base station 2 and low power nodes 1 may marks
Same time point (radio frames) is different SFN, and the uncertainty of message transmission time delay, and low power nodes 1 are in transmission one
Specific resource units relevant information in the section time, or macro base station 2 ask the resource in certain time that low power nodes 1 measure
During unit relevant information, it should also need to add the SFN of this section of time start time point (radio frames), and first resource units exist
It also should be the first subframe (#0) in the radio frames on time.
Therefore, in a preferred embodiment of the embodiment of the present invention, as shown in fig. 7, said apparatus can also include：
Determining module 508, in the up starting radio-frame time point for being disturbed degree information and including each resource units of instruction
During SFN, each resource units corresponding with each resource units of macro base station are determined according to SFN.Determining module 508 determines grand base
After each resource units corresponding with each resource units stood, identification module 504 up can be disturbed according to what is received
The user equipment that program information and macro base station 2 are dispatched in certain period of time on each resource units, is identified to low-power section
Point 1 causes the user terminal UE of uplink interference.
By the embodiment of the present invention, low power nodes report its suffered uplink interference on each resource units to macro base station
Degree information, macro base station determine its MUE dispatched on disturbed resource units, identify and low power nodes are caused
The MUE of row interference, macro base station can set appropriate scheduling strategy, so as to avoid causing the MUE of uplink interference from continuing to low work(
Rate node produces interference.
According to embodiments of the present invention, additionally provide a kind of recognition methods for the user equipment for causing uplink interference, can with but
It is not limited in the system or device that the above embodiment of the present invention provides, identifies the user that low power nodes are caused with uplink interference
Equipment.
Fig. 8 is the flow chart of the recognition methods of the user equipment for causing uplink interference according to embodiments of the present invention, such as Fig. 8
Shown, this method includes following steps (step S802- step S804)：
Step S802, macro base station receive low power nodes LPN report it is up be disturbed degree information, wherein, it is up by
Annoyance level information includes：LPN is disturbed degree information in certain period of time on each resource units.
Under the cell Coexistence Situation that macrocell and LPN are covered, if macro base station can not determine to be located at LPN cells side
Edge, and the user equipment (providing service, referred to as MUE by macro base station) of uplink interference can be caused to LPN, then even if macro base station obtains
Know that LPN receives uplink interference, can not also set it is appropriate, can avoid or reduce to PLN produce interference scheduling strategy.Cause
This, LPN will can be notified to macro base station from the information of suffered annoyance level on specific each resource units within a period of time；
Macro base station preserves the MUE dispatched respectively on each PRB in this corresponding a period of time information, so as to be disturbed LPN
MUE of the resource units with being dispatched on resource units information is matched, and identifies the MUE that uplink interference is caused to LPN,
And then make it is appropriate, can avoid or reduce scheduling strategy that uplink interference is caused to LPN.
Therefore, LPN can be gone out on each resource units to be subject to according to the signal identification received by its receiver it is dry
Disturb degree information, it is preferable that can record and be disturbed degree information.Then by interface between LPN and macro base station (for example,
X2 interface), to macro base station transmission Load Information message, the uplink interference overload in message indicates (UL
Interference Overload Indication) or other specification can carry in a period of time, be suffered on each resource units
Uplink interference degree；Macro base station preserves the MUE serviced in this period of time it resource location schedule information, i.e., each
The MUE dispatched respectively on PRB.
In a preferred embodiment of the embodiment of the present invention, LPN can be with cycle and/or event mode to macro base station
The up of the LPN is reported to be disturbed degree information.For example, when LPN is by compared with strong jamming or more serious load, LPN is triggered
The up of the LPN is reported to be disturbed degree information to macro base station.Actively the up of the LPN is reported to be disturbed to macro base station in LPN
In the case of degree information, if the interface of LPN and macro base station is X2 interface, LPN can pass through Load Information Message (Load
Information the up of the LPN) is reported to be disturbed degree information.It will be appreciated by those skilled in the art that transmission above- mentioned information
Can also be other existing X2 chains of command message or newly-increased message.
For example, when setting cycle arrival, LPN sends X2 message to macro base station：Load Information, LPN can be with
Macro base station LPN is notified specifically to provide by the parameter UL Interference Overload Indication in this message
Up in the unit of source is disturbed degree information.According to actual conditions, can set it is different be disturbed degree, for example, can be with
Degree will be disturbed to be divided into：Severe jamming (high interference), intermediate disturbance (medium interference)
(low interference) several grades are disturbed with slight, and then macro base station is according to the grade for the degree that is disturbed, it is determined whether
Corresponding measure is taken to reduce uplink interference.
In actual applications, low power nodes can also report each unit money of frequency domain in certain period of time to macro base station
The up of source is averagely disturbed degree information.Reached in the up up degree that is averagely disturbed for being averagely disturbed degree information carrying
During to predetermined threshold value, macro base station to low power nodes send resource status request message, request low power nodes reporting uplink by
Annoyance level information, after low power nodes receive resource status request message, resource status new information is sent to macro base station,
The up of each resource units in certain period of time is reported averagely to be disturbed degree information.
For example, reception of the macro base station by interface message (such as X2 information), knows each of each server carrier that LPN is provided
Frequency-domain segment (frequency domain unit resource) being averaged within a period of time is disturbed degree, if LPN in some carrier frequency by
Uplink interference it is more serious, then macro base station reports initialization program (Resource Status by resource status message
Reporting Initiation), request LPN measurements report is disturbed degree within a period of time on specific resource units,
Macro base station preserves this period of time reported to request LPN measurements interior resource location that upward signal is sent to MUE and adjusted accordingly
Spend information；LPN performs requested measurement after receiving interface message, and result is carried in RESOURCE STATUS UPDATE
Macro base station is sent in message.
In a preferred embodiment of the embodiment of the present invention, to achieve these goals, macro base station receives low-power
Node LPN report it is up be disturbed before degree information, the method for the embodiment of the present invention also includes：Macro base station is received on LPN
The up of each unit resource of frequency domain is averagely disturbed degree information in the certain period of time of report；Degree is averagely disturbed up
Information is carried up when being averagely disturbed degree and reaching predetermined threshold value, and resource status request (RESOURCE is sent to LPN
STATUS REQUEST) message, ask LPN reporting uplinks to be disturbed degree information.By the embodiment of the present invention, LPN being capable of spirit
Reporting uplink living is disturbed degree information.Wherein, LPN can report grand base in a manner of cycle and/or event to macro base station
The up of each resource units in the asked period of standing is disturbed degree information.Wherein, if in resource status request message
Report, then LPN is asked after resource status request message is received according to resource status request message RQ cycle
Cycle, periodically measurement, and resource status new information periodically is replied to macro base station, reporting uplink is disturbed degree letter
Breath；If periodically reported without requirement in resource status request message, LPN can disappear receiving resource status request
After breath, after completing measurement, first resource state new information is replied to macro base station, reporting uplink is disturbed degree information and (surveyed
Measure result).
According to actual conditions, LPN report its be disturbed degree information on each resource units, one can be included in
Interior the up of all resource units of fixing time is disturbed degree information, only can also reach default threshold comprising the up degree that is disturbed
The up of the resource units of value is disturbed degree information.Report the up situation for being disturbed degree information of all resource units
Under, can be by macro base station according to the threshold value pre-set, to the up resource list for being disturbed degree and reaching threshold value of resource units
Position is identified；Only it is being disturbed comprising up in the case that degree reaches the resource units of predetermined threshold value, LPN is before reporting
Can first it be judged, so as to which only reporting uplink is disturbed the resource units that degree reaches predetermined threshold value.
Step S804, macro base station are disturbed degree information and the macro base station within the above-mentioned period in each money according to up
The user equipment dispatched in the unit of source, identify the user equipment that uplink interference is caused to above-mentioned LPN.
In actual applications, different base station each indicates radio frames to indicate time, macro base station and low power nodes with SFN
It is different SFN that same time point (radio frames), which may be marked, and the uncertainty of message transmission time delay, low power nodes exist
Transmit in specific resource units relevant information in a period of time, or certain time of macro base station request low power nodes measurement
During resource units relevant information, it should also need to add the SFN of this section of time start time point (radio frames).Therefore, in this hair
In one preferred embodiment of bright embodiment, before macro base station identifies the user equipment (UE) that uplink interference is caused to LPN, also wrap
Include：Each resource units corresponding with each resource units of macro base station are determined according to SFN.By this preferred embodiment, carry
The high reliability and accuracy of identification.
Receive that LPN reports it is up be disturbed degree information after, known that LPN receives the uplink interference of middle intensity
Resource units, and macro base station preserves the money that the MUE dispatched respectively in the corresponding period, on each PRB sends upward signal
Source location information, i.e. macro base station preserve the macro base station schedule information for sending signal up to UE, Jin Ertong within the corresponding period
The matching for crossing the two information corresponds to, and macro base station can identify the MUE that predetermined threshold value above uplink interference is caused to LPN,
So as to set out it is appropriate, can avoid or reduce the scheduling strategy interfered to Pico eNB.
In actual applications, macro base station sends upward signal with PRB granularity scheduling MUE and recorded, if LPN remembers
The time domain for recording the resource units of annoyance level is 0.5ms (i.e. and PRB granularity), then macro base station, which receives, is disturbed degree information
Afterwards, it most can accurately be matched, identify interference source MUE；If the time domain length of the resource units is 1ms, i.e. LPN
The annoyance level information recorded is the average value being interfered on 2 PRB, then may be wrapped when Macro eNB are matched
The MUE that uplink interference is not caused to LPN is contained.In a word, LPN keeps a record granularity is thinner, and (corresponding information content is also more
Greatly), it is also more accurate to receive the matching result that can be drawn after message for macro base station.
By the embodiment of the present invention, low power nodes report its suffered uplink interference on each resource units to macro base station
Degree information, macro base station determine its user equipment dispatched on disturbed resource units, identify and low power nodes are made
Into the user equipment of uplink interference.
It is described below by specific embodiment.
Embodiment one
According to embodiments of the present invention, have been described in detail, in low-power micro-base station (Pico eNB) and macro base station (Macro
ENB in the case of) coexisting, when causing uplink interference to Pico eNB by the user equipment of macro base station offer service, Pico eNB
By being disturbed degree information on Load Information message informing Macro eNB each resource units interior for a period of time,
The schedule information progress of PRB positions that Macro eNB preserve it with itself, during this period of time MUE transmissions upward signal
Match somebody with somebody, so as to identify the MUE interfered to Pico eNB.
Fig. 9 is the flow chart of the recognition methods of according to embodiments of the present invention one user equipment for causing uplink interference, such as
Shown in Fig. 9, this method includes following steps (step S902- step S904)：
Step S902：Low power nodes Pico eNB can be deployed in Macro eNB coverage or its cell edge；
When MUE is located near Pico cells (also just distance Macro eNB are distant by the corresponding MUE), Macro eNB are can be suitable
Profit receives MUE signal, and it can dispatch MUE and send upward signal with larger transmission power.If the serving cell of the MUE
The carrier frequency of (or one of serving cell) is identical with the carrier frequency of certain Pico cell, then the up transmission signal of the MUE
It is likely to cause uplink interference to Pico eNB.Pico eNB periodically or event triggering property (such as eNB by compared with strong jamming or
Load it is more serious when) to Macro eNB send X2 message：Load Information, Pico eNB can pass through this
Parameter UL Interference Overload Indication in message notify it in specific resource list to Macro eNB
Up on position is disturbed degree information (such as：Severe jamming high interference, intermediate disturbance medium
Interference, slight to disturb low interference).
For example, the up scheme for being disturbed degree information in a kind of possible transfer resource unit is with Two-Dimensional Moment
Battle array bitmap (Bitmap) identifies.Such as：Laterally to represent slot time, represent frequency domain unit (i.e. 180KHz) with longitudinal direction, often
The position of one matrix element is the time quantum and frequency values for representing that resource units (PRB) are actual, and the value table of each matrix element
Show the uplink interference degree suffered by the resource units.As mentioned previously, because some resource units, which do not dispatch UE, sends up letter
Number, eNB does not attempt to first-class to be received in the resource units yet, then the matrix element value can be 0；Or there can also be journey
Message identification is spent, although i.e. Pico eNB will not receive the upward signal transmitted by PUE on the PRB, but may be received
To the signal transmitted by MUE, and the signal is pure interference for Pico eNB, and annoyance level letter is filled in the matrix element
Breath mark can identify for Macro eNB to provide more information for the MUE of interference source.
If Load Information message is periodically to send (being typically 20ms or longer), Pico is disturbed
It (is Pico eNB by uplink interference, this refers to that the Pico cells that eNB is established occupy 50 frequency domain unit resources on frequency domain
Be that Pico eNB can be received simultaneously when attempting to receive the upward signal that the PUE of Pico cell serves established by itself is sent
The upward signal sent to MUE；And because the Macro cells where interference source MUE are identical with Pico cell carrier frequencies, therefore
Pico eNB are difficult to differentiate between the two upward signals), then the Bitmap is the two-dimensional matrix of 50 row * 40 row, each
The position of matrix element is that the actual Time And Frequencies of the PRB, each matrix element value receive according to Pico eNB on each PRB
The record of suffered disturbed degree is actual during signal is filled into high interference (H) or medium
Interference (M) or low interference (L), as shown in table 1.(a bit illustrated is needed, if as described above,
Some PRB is configured to send downstream signal or sends upward signal, the value of the matrix element without any serviced UE is dispatched
Can be 0).
Table 1：
If Load Information message is event, triggering (has demand just to send, by sender Pico
ENB is decided in its sole discretion), that is to say, that it is indefinite that it sends the time span that carrying information represents in the time of message and message, then
The design principle of above-mentioned matrix is constant, and simply time quantum is indefinite, i.e., the columns of two-dimensional matrix bitmap is equal in message and actually represented
Number of time slots.
Further, Macro eNB need to preserve the resource-niche that own schedule MUE in this period of time sends upward signal
Confidence ceases, i.e., scheduled which MUE sends upward signal on which PRB.Load Information are sent for periodicity
For the scheme of message, Macro eNB only need preservation the preceding paragraph to correspond to the schedule information in the cycle (such as 20ms or longer)；And
For sending the scheme of Load Information message to event triggering property, Macro eNB need to preserve Load twice
Schedule information in the Information message interval times, i.e. Macro eNB are receiving new Load Information message
The preceding resource location information for preserving scheduling MUE always and sending upward signal.
Additionally need explanation is a bit, because Macro eNB and Pico eNB are to the SFN arranges values of instruction real time
(such as to same time point, it is SFN=0001 that Macro eNB set numbering to possible difference, and it is SFN=that Pico eNB, which set numbering,
1000), along with the propagation delay time of X2 message, therefore when Macro eNB receive Load Information message and know
During its above-mentioned two-dimensional matrix carried, also need to indicate which real time first matrix element of first trip indicates on earth in message
The subframe of point, this just needs to carry the SFN of the radio frames where first trip first subframe in message to be indicated that (subframe also should
It is the first subframe #0 of the radio frames)；And before this, OAM eNB its adjacent eNB should be notified to configure SFN is actual to be indicated
(i.e. OAM can will be exactly SFN=in Macro eNB corresponding to SFN=1000 radio frames in Pico eNB to radio-frame time value
0001 radio frames this information notice Macro eNB, such as the difference that this SFN can be notified to configure).
Step S904：Macro eNB, which are received, to be known after Load Information message and is referred to the SFN carried in message
In 20ms (or longer a period of time) that the radio frames start time point shown starts, on the carrier wave that Pico eNB are currently used,
The up of each resource units is disturbed degree；Meanwhile based on itself storage, each money on corresponding period and frequency band
The MUE that scheduled in the unit of source sends the information of upward signal, Macro eNB can match cognization go out to disturb Pico eNB receptions
MUE.In order to avoid these MUE continue to produce Pico eNB uplink interference, that Macro eNB are set is appropriate, can avoid or
The scheduling strategy that interference is produced to Pico eNB is reduced, such as reconfigures MUE serving cell.
By the embodiment of the present invention, disturbed Pico eNB notify on each resource units suffered upper to Macro eNB
Which MUE row annoyance level information, Macro eNB scheduled to identify by determining on the resource units that are disturbed by middle intensity
The MUE of uplink interference is caused to PicoeNB, so as to set appropriate scheduling strategy to avoid these interference sources UE from continuing pair
Pico eNB produce interference.
Embodiment two
According to embodiments of the present invention, Pico eNB notify each frequency domain unit to provide by existing X2 message to Macro eNB
Up within a period of time of source is averagely disturbed degree information, and Macro eNB know Pico eNB some after receiving message
Disturbed on frequency band by middle intensity, then Macro eNB pass through Resource Status Reporting Initiation journeys
Sequence request Pico eNB were further reported in a period of time is disturbed situation on specific resource units；Macro eNB are corresponding
Meeting preserve the PRB positional informations that the serviced MUE of scheduling in this period of time sends upward signal.Pico eNB receive request
Corresponding measurement is performed after message, and result is carried and reports Macro in RESOURCE STATUS UPDATE messages
eNB。
Macro eNB by the information obtained in RESOURCE STATUS UPDATE messages and itself preserve, at this
The resource units positional information of scheduling MUE transmission upward signals is matched in the section time, and Pico eNB are made so as to identify
Into the MUE of interference, thus can make it is appropriate, can avoid or reduce scheduling strategy that interference is produced to Pico eNB.
Figure 10 is the flow chart of the recognition methods of according to embodiments of the present invention two user equipment for causing uplink interference, such as
Shown in Figure 10, this method includes following steps (step S1002- step S1008)：
Step S1002：Low power nodes Pico eNB can be deployed in Macro eNB coverage or its cell side
Edge；When MUE is located near Pico cells (also just distance Macro eNB are distant by the corresponding MUE), Macro eNB are energy
Enough signals for smoothly receiving MUE, it can dispatch MUE and send upward signal with larger transmission power.If the service of the MUE is small
The carrier frequency in area's (or one of serving cell) is identical with the carrier frequency of certain Pico cell, then the up transmitting letter of the MUE
Number it is likely to cause uplink interference to Pico eNB.Pico eNB can send existing X2 message to indicate to Macro eNB
The up averagely disturbed degree being subject to per frequency domain unit resource within a period of time.
Step S1004：Macro eNB receive know after above-mentioned message Pico eNB may receive in, the interference of intensity,
Then Macro eNB can utilize Resource Status Reporting Initiation programs.That is, Macro eNB
Resource status is sent to Pico eNB by X2 interface and asks (RESOURCE STATUS REQUEST) message, asks Pico
ENB reports a period of time (can be with time or other time indicated in the X2 message in step 501, such as Pico
ENB measures a period of time of statistics etc. after receiving request message, should indicate that Pico eNB need to measure in a word, in the request message
Time span, it is also possible to also include the SFN of starting radio-frame time point) in the uplink interference that is subject on specific each resource units
Degree.Accordingly, Macro eNB send this request message, itself can preserve in the period indicated in message to service
MUE scheduling sends the PRB positional informations of upward signal.Pico eNB are counted after receiving message if can perform this measurement, i.e.,
Reply resource status response (RESOURCE STATUS RESPONSE) message.
Step S1006：According to the measurement timing statisticses length indicated in RESOURCE STATUS REQUEST message and can
Information, the Pico eNB such as the also included start time point of energy report this period by RESOURCE STATUS UPDATE messages
Uplink interference degree information in interior per unit resource.Transmission plan can be similar with given example in embodiment one, step 401,
Simply specified if the time that reported result is based on is Macro eNB, then SFN can be no longer added, such as step 502 institute
State.Pay attention to, RESOURCE STATUS UPDATE messages are probably what durations were sent.
Step S1008：Macro eNB know the asked time after receiving RESOURCE STATUS UPDATE messages
The up of each resource units is disturbed degree on the carrier wave that section is interior, Pico eNB are currently used；Meanwhile based on itself storage,
The PRB positional informations of upward signal, Macro transmitted by the MUE that scheduled on each PRB on corresponding period and frequency band
ENB can match cognization go out to disturb Pico eNB signals reception MUE.In order to avoid these MUE continue in PicoeNB generations
Row interference, that Macro eNB are set is appropriate, can avoid or reduce scheduling strategy that interference is produced to Pico eNB, such as reconfigures
MUE serving cell etc..The RESOURCE STATUS UPDATE messages periodically sent can be such that Macro eNB make in time
Adjustment.
The recognition methods of the user equipment for causing uplink interference of embodiment of the present invention, apparatus and system, are best suited for
The situation that macro base station coexists with low-power micro-base station, but the above situation is not limited to, the above method, apparatus and system are to other LPN
(for example, Home eNodeB, via node etc.) is also suitable.
As can be seen from the above description, in embodiments of the present invention low power nodes (LPN) to macro base station (Macro
ENB its suffered uplink interference degree information on each resource units) is reported, macro base station determines its resource being disturbed in LPN
The MUE dispatched in unit, the MUE that low power nodes are caused with uplink interference is identified, so as to which macro base station can be set suitably
Scheduling strategy, avoid causing the MUE of uplink interference from continuing to produce interference to low power nodes.
Obviously, those skilled in the art should be understood that above-mentioned each module of the invention or each step can be with general
Computing device realize that they can be concentrated on single computing device, or be distributed in multiple computing devices and formed
Network on, alternatively, they can be realized with the program code that computing device can perform, it is thus possible to they are stored
Performed in the storage device by computing device, and in some cases, can be with different from shown in order execution herein
The step of going out or describing, they are either fabricated to each integrated circuit modules respectively or by multiple modules in them or
Step is fabricated to single integrated circuit module to realize.So, the present invention is not restricted to any specific hardware and software combination.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.Within the spirit and principles of the invention, that is made any repaiies
Change, equivalent substitution, improvement etc., should be included in the scope of the protection.
Claims (8)
- A kind of 1. recognition methods for the user equipment for causing uplink interference, it is characterised in that including：Macro base station receive low power nodes LPN report it is up be disturbed degree information, wherein, it is described it is up be disturbed degree letter Breath includes：LPN is disturbed degree information in certain period of time on each resource units；The macro base station up is disturbed degree information and the macro base station within the period described each according to described The user equipment dispatched on resource units, identify the user equipment that uplink interference is caused to the LPN；Wherein, macro base station receive low power nodes LPN report it is up be disturbed before degree information, methods described also includes： The macro base station receives the up of frequency domain constituent parts resource in the certain period of time that the LPN is reported and is averagely disturbed degree letter Breath；It is described it is up be averagely disturbed degree information carrying up and be averagely disturbed degree and reach predetermined threshold value when, to described LPN sends resource status request message, asks the LPN reporting uplinks to be disturbed degree information；Macro base station receive that low power nodes LPN reports it is up be disturbed degree information, including：Described in the macro base station receives The resource status new information that LPN is returned after the resource status request message is received, wherein, the resource status renewal In message up degree information is disturbed containing described.
- 2. according to the method for claim 1, it is characterised in that to the macro base station report the LPN it is described it is up by Annoyance level information, including：The LPN reports the described of the LPN up to be disturbed degree information by Load Information Message.
- 3. method according to claim 1 or 2, it is characterised in thatIt is described it is up be disturbed degree information, in addition to：Indicate the starting radio-frame time point of each resource units is Unite frame number SFN；Before identification causes the user equipment (UE) of uplink interference to the LPN, methods described also includes：Determined according to the SFN Each resource units corresponding with each resource units of the macro base station.
- 4. method according to claim 1 or 2, it is characterised in that methods described also includes：Described in the macro base station preserves Macro base station schedule information for sending signal up to user equipment within the period.
- 5. method according to claim 1 or 2, it is characterised in that the resource units are 180kHZ in frequency, when Between upper comprise at least 0.5ms.
- A kind of 6. identification device for the user equipment for causing uplink interference, it is characterised in that including：Receiving module, for receive that low power nodes LPN reports it is up be disturbed degree information, wherein, it is described up by dry Disturbing degree information includes：LPN is disturbed degree information in certain period of time on each resource units；Identification module, for up being disturbed program information and macro base station within the period in each money according to described The user equipment dispatched in the unit of source, identify the user equipment that uplink interference is caused to the LPN；Wherein, the receiving module, it is additionally operable to receive the upper of each unit resource of frequency domain in the certain period of time that the LPN is reported Row is averagely disturbed degree information；Described device also includes：Sending module, for up being averagely disturbed degree information described What is carried is up when being averagely disturbed degree and reaching predetermined threshold value, resource status request message is sent to the LPN, described in request LPN reporting uplinks are disturbed degree information；The receiving module is additionally operable to receive the resource status that the LPN is returned after the resource status request message is received New information, wherein, up it is disturbed degree information containing described in the resource status new information.
- 7. device according to claim 6, it is characterised in that described device also includes：Determining module, in the up starting radio frames for being disturbed degree information and including instruction each resource units During the SFN at time point, each resource list corresponding with each resource units that the macro base station is determined according to the SFN Position.
- A kind of 8. identifying system for the user equipment for causing uplink interference, it is characterised in that including：Low power nodes LPN, for reporting the up of the LPN to be disturbed degree to macro base station with cycle and/or event mode Information, wherein, the up degree information that is disturbed includes：In certain period of time degree letter is disturbed on each resource units Breath；The macro base station, including the device described in claim 6 or 7, it is up by dry for receive that low power nodes LPN reports Disturb degree information；And up degree information and the macro base station are disturbed within the period described each according to described The user equipment dispatched on individual resource units, identify the user equipment that uplink interference is caused to the LPN.
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