CN103200691B - Control the transmission method and device of information - Google Patents
Control the transmission method and device of information Download PDFInfo
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- CN103200691B CN103200691B CN201210004130.3A CN201210004130A CN103200691B CN 103200691 B CN103200691 B CN 103200691B CN 201210004130 A CN201210004130 A CN 201210004130A CN 103200691 B CN103200691 B CN 103200691B
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- 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
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
The invention discloses a kind of transmission methods and device of control information.Wherein, this method includes：Low power base station determines when being disturbed degree more than interference threshold of the UE that it is serviced, and obtains the PDCCH information of each macrocell under macro base station；The low power base station adjusts scheduling strategy according to the above-mentioned PDCCH information of acquisition；The low power base station is based on the scheduling strategy transmission control information after adjustment.Through the invention, low power base station determines when being disturbed degree more than interference threshold of the UE that it is serviced, obtain the PDCCH information of each macrocell under macro base station, then scheduling strategy is adjusted according to the PDCCH information, the transmission for carrying out control information based on the scheduling strategy after adjustment again reduces or avoids the interference of control information between base station, improves the larger problem of the interference of the relevant technologies medium and small interval control information transmission, and then the quality of Radio Link is improved, improve the performance of overall network.
Description
Technical field
The present invention relates to the communications fields, in particular to a kind of transmission method and device of control information.
Background technology
With the development of mobile communication and information technology, demand of the user to data service is growing.Mainstream at present
Mobile communications network either uses global system for mobile communications (Global System For Mobile
Communication, referred to as GSM) and/Universal Wireless Packet Service (General Packet Radio Service, referred to as
GPRS the 2/2.5th third generation mobile communication network), or using Universal Mobile Communication System (Universal Mobile
Telecommunications System, referred to as UMTS) third generation mobile communications network, be all to be advised by operator is unified
It draws, the homogeneous network (Homogeneous Network) of deployment.Homogeneous network is once disposed, the network capacity in certain area
Also it just secures.
In order to meet the data traffic requirement of rapid growth, operator needs to dispose more websites.However, a side
The expense in face, the isomorphism macro network website disposed and upheld one's heritage is higher；On the other hand, even if on the basis of legacy network
On deploy a large amount of new site, network capacity also secures therewith, does not adapt to the business load in some areas in network
With the variation demand of service quality (Quality of Service, referred to as QoS).
The design of 4th third-generation mobile communication is that some low power nodes (Lower is disposed on the basis of original homogeneous network
Power Node, referred to as LPN), including low-power micro-base station (Pico eNB), enhanced Home eNodeB (HeNB) and relaying section
Point (Relay) etc..Since the transmission power of these LPN is relatively low, the base station relative to 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), cell (Small Cell) or low power nodes cell (LPN Cell).
The deployment of LPN is more flexible, for example LPN can be flexibly deployed in hot spot region according to number of users, to
The network capacity of hot spot region can effectively be increased, mitigate the load of macrocell in hot spot region, be exactly LPN as shown in Figure 1
The schematic diagram of hot spot covering, Fig. 1 includes the macrocell under base station (eNB) and base station range, and LPN is deployed in hot spot
The cell in region, covering is properly termed as cell, is merely illustrative herein certainly.LPN can also be deployed in cell edge,
So as to effectively enhance the covering of cell edge, the QoS of Cell Edge User is improved, is exactly as shown in Figure 2 LPN cells side
The schematic diagram of edge covering, the construction of Fig. 2 is similar with Fig. 1, and only the cell of LPN coverings is deployed in cell edge.LPN can be with
Deployment indoors, so as to effectively enhance in-door covering, improves the QoS of indoor user, meets the big business of indoor user
Amount demand, while mitigating the load of macrocell, the schematic diagram of LPN in-door coverings as shown in Figure 3, construction and Fig. 1 classes of Fig. 3
Seemingly, only the cell of LPN coverings is deployed in interior.
Flexibility in LPN deployment so that network configuration is also more complicated, the user equipment that different type base station is serviced
The co-frequency cell that (User Equipment, abbreviation UE) may be established by other neighbouring base stations is interfered, UE and service
Therefore radio link quality between base station declines, and then the performance of whole network also reduces.Relative to data channel portion,
How to avoid minizone physical downlink control channel (Physical Downlink Control Channel, referred to as
PDCCH the interference) transmitted is even more important, because PDCCH mainly carries other controls of resource allocation information and 1 or 1 group UE
Information (coding mode of such as data channel) processed.
Larger problem is interfered for the control information transmission of the relevant technologies medium and small interval, not yet proposes effective solution at present
Certainly scheme.
Invention content
Larger problem is interfered for the control information transmission of the relevant technologies medium and small interval, the present invention provides a kind of controls
The transmission method and device of information, at least to solve the above problems.
According to an aspect of the invention, there is provided a kind of transmission method of control information, this method include：Low-power base
It stands and determines when being disturbed degree more than interference threshold of its UE serviced, obtain the PDCCH information of each macrocell under macro base station；
The low power base station adjusts scheduling strategy according to the above-mentioned PDCCH information of acquisition；The low power base station is based on above-mentioned after adjustment
Scheduling strategy transmission control information.
Above-mentioned PDCCH information may include：The symbol occupancy of PDCCH；Above-mentioned low power base station obtains each under macro base station
The PDCCH information of macrocell includes：Above-mentioned low power base station sends measurement request message to macro base station, which asks
Above-mentioned macro base station is asked to calculate the symbol occupancy that each macrocell in designated time period sends PDCCH；Above-mentioned macro base station receives
After stating measurement request message, the symbol numbers of the practical PDCCH sent of each macrocell in above-mentioned designated time period are recorded, according to this
The symbol numbers of PDCCH calculate the symbol occupancy for the PDCCH that each macrocell is sent, and send and feed back to above-mentioned low power base station
Message, wherein the feedback message carries the symbol occupancy of above-mentioned PDCCH；Above-mentioned low power base station receives above-mentioned macro base station
The symbol occupancy of the above-mentioned PDCCH of feedback.
Above-mentioned measurement request message also carries the finger for indicating above-mentioned macro base station period measurement and periodic report measurement result
Show information；Correspondingly, above-mentioned low power base station includes according to the above-mentioned PDCCH information of acquisition adjustment scheduling strategy：The low-power
Base station adjusts scheduling strategy according to the symbol occupancy of the PDCCH of the current period of acquisition.
Above-mentioned measurement request message can be resource status request message；Above-mentioned feedback message can be that resource status updates
Message.
Above-mentioned low power base station can be micro-base station or enhanced Home eNodeB.
According to another aspect of the present invention, a kind of transmission method of control information is provided, this method includes：Macro base station connects
It receives the UE that low power base station reports and is disturbed situation；The macro base station is disturbed interference journey of the situation determination to above-mentioned UE according to above-mentioned
When degree is more than interference threshold, the PDCCH information of each cell under above-mentioned low power base station is obtained；Above-mentioned macro base station is according to the upper of acquisition
State PDCCH information adjustment scheduling strategy；Above-mentioned macro base station is based on the above-mentioned scheduling strategy transmission control information after adjustment.
Above-mentioned PDCCH information may include：The symbol occupancy of PDCCH；Above-mentioned macro base station obtains above-mentioned low power base station
Under the PDCCH information of each cell include：Above-mentioned macro base station sends measurement request message, measurement request to above-mentioned low power base station
The above-mentioned low power base station of message request calculates the symbol occupancy that each cell in designated time period sends PDCCH；Above-mentioned low-power
After base station receives above-mentioned measurement request message, the symbol of the practical PDCCH sent of each cell in above-mentioned designated time period is recorded
Number, calculates the symbol occupancy for the PDCCH that each cell is sent according to the symbol numbers of above-mentioned PDCCH, and to above-mentioned macro base
It stands and sends feedback message, wherein the feedback message carries the symbol occupancy of above-mentioned PDCCH；Above-mentioned macro base station receives above-mentioned
The symbol occupancy of the above-mentioned PDCCH of low power base station feedback.
Above-mentioned measurement request message also carries the above-mentioned low power base station period measurement of instruction and periodic report measurement result
Instruction information；Above-mentioned macro base station adjusts scheduling strategy according to the above-mentioned PDCCH information of acquisition：Above-mentioned macro base station is according to obtaining
The symbol occupancy of the PDCCH of the current period taken adjusts scheduling strategy.
Above-mentioned measurement request message can be resource status request message；Above-mentioned feedback message can be that resource status updates
Message.
Above-mentioned low power base station can be micro-base station or enhanced Home eNodeB.
According to another aspect of the invention, a kind of transmitting device of control information is provided, which is set to low-power
On base station, which includes：Data obtaining module, for determining that the degree that is disturbed of the UE of above-mentioned low power base station service is more than
When interference threshold, the PDCCH information of each macrocell under macro base station is obtained；Scheduling strategy adjusts module, for according to above- mentioned information
The above-mentioned PDCCH information that acquisition module obtains adjusts scheduling strategy；Transmission module, for adjusting module based on above-mentioned scheduling strategy
Above-mentioned scheduling strategy transmission control information after adjustment.
In accordance with a further aspect of the present invention, a kind of transmitting device of control information is provided, which is set to macro base station
On, which includes：Receiving module is disturbed situation for receiving the UE that low power base station reports；Data obtaining module is used for
According to above-mentioned receiving module receive it is above-mentioned be disturbed situation determine be more than interference threshold to the annoyance level of above-mentioned UE when, obtain
The PDCCH information of each cell under above-mentioned low power base station；Scheduling strategy adjusts module, for being obtained according to above- mentioned information acquisition module
The above-mentioned PDCCH information adjustment scheduling strategy taken；Transmission module, for being adjusted after module adjusts based on above-mentioned scheduling strategy
State scheduling strategy transmission control information.
Through the invention, low power base station determines when being disturbed degree more than interference threshold of the UE that it is serviced, and obtains
Then the PDCCH information of each macrocell under macro base station adjusts scheduling strategy according to the PDCCH information, then based on the tune after adjustment
Degree strategy carries out the transmission of control information, reduces or avoids the interference of control information between base station, improve small in the relevant technologies
Larger problem is interfered in the transmission of range restraint information, and then improves the quality of Radio Link, improves the property of overall network
Energy.
Description of the drawings
Attached drawing described herein is used to provide further understanding of the present invention, and is constituted part of this application, this hair
Bright illustrative embodiments and their description are not constituted improper limitations of the present invention for explaining the present invention.In the accompanying drawings：
Fig. 1 is the schematic diagram covered according to the LPN hot spots of the relevant technologies；
Fig. 2 is the schematic diagram covered according to the LPN cell edges of the relevant technologies；
Fig. 3 is the schematic diagram according to the LPN in-door coverings of the relevant technologies；
Fig. 4 is the flow chart of the transmission method of control information in low power base station side according to the ... of the embodiment of the present invention；
Fig. 5 is the flow chart of the transmission method of control information in macro base station side according to the ... of the embodiment of the present invention；
Fig. 6 is the transmission method flow chart of the control information of Pico eNB according to the ... of the embodiment of the present invention；
Fig. 7 is the schematic diagram of Pico eNB according to the ... of the embodiment of the present invention and the information interaction of macro base station；
Fig. 8 is the transmission method flow chart of the control information of HeNB according to the ... of the embodiment of the present invention；
Fig. 9 is the schematic diagram of HeNB according to the ... of the embodiment of the present invention and the information interaction of macro base station；
Figure 10 is the structure diagram of the transmitting device of the control information of low power base station side according to the ... of the embodiment of the present invention；
Figure 11 is the structure diagram of the transmitting device of the control information of macro base station side according to the ... of the embodiment of the present invention.
Specific implementation mode
Come that the present invention will be described in detail below with reference to attached drawing and in conjunction with the embodiments.It should be noted that not conflicting
In the case of, the features in the embodiments and the embodiments of the present application can be combined with each other.
Pico eNB be it is a kind of by operator deployment, with the framework of macro base station (Macro eNB) and functionally similar
LPN.If deploying Pico eNB in the coverage area of macro base station, when the resource of macro base station can not the numerous accesses of load
UE when, macro base station can dispatch some UE and be switched in the cell (Pico Cell) that Pico eNB are established to obtain load balance.
On the other hand, because the transmission power of Pico eNB is relatively low, if being linked into the UE of Pico Cell (hereinafter simply referred to as
PUE) it is located at cell edge, then as interfered cell (Victim Cell) and neighbouring Macro Cell in Pico Cell
In interfered cell (Aggressor Cell) carrier frequency it is identical when, PUE will be by macro base station downstream transmission signals
Interference.
HeNB is a kind of LPN voluntarily controlled by user, does not have X2 interface between HeNB and macro base station, only with positioned at core
There are S1 interfaces between the mobility management entity (Mobility Management Entity, abbreviation MME) of net.If in macro base
HeNB is deployed in the coverage area stood, then the user for belonging to the HeNB understands the cell (HeNB that priority access is established to HeNB
Cell in).And for be in HeNB coverage areas or near, and not the UE of the HeNB user can not just be linked into HeNB
Cell only has access in the cell (Macro Cell) that macro base station is established.If the Aggressor in HeNB Cell
Cell is identical as the carrier frequency of Victim Cell in the Macro Cell, then the UE for being linked into Macro Cell (is known as
MUE it) will be interfered by HeNB downstream transmission signals.
Based on this, an embodiment of the present invention provides a kind of transmission methods and device of control information.Below by embodiment
It is described in detail.
A kind of transmission method of control information is present embodiments provided, the present embodiment is in this way in low power base station side reality
It is illustrated for existing, as shown in Fig. 4 the transmission method of control information in low power base station side according to the ... of the embodiment of the present invention
Flow chart, this approach includes the following steps (step S402- step S406)：
Step S402, low power base station determine when being disturbed degree more than interference threshold of the UE that it is serviced, obtain macro
The PDCCH information of each macrocell under base station；
Step S404, above-mentioned low power base station adjust scheduling strategy according to the above-mentioned PDCCH information of acquisition；
Step S406, above-mentioned low power base station is based on the above-mentioned scheduling strategy transmission control information after adjustment.
By the above method, low power base station determines when being disturbed degree more than interference threshold of the UE that it is serviced, and obtains
Take the PDCCH information of each macrocell under macro base station, then according to the PDCCH information adjust scheduling strategy, then based on adjustment after
Scheduling strategy carries out the transmission of control information, reduces or avoids the interference of control information between base station, improve in the related technology
Larger problem is interfered in control information transmission in minizone, and then improves the quality of Radio Link, improves overall network
Performance.
Above-mentioned PDCCH information is to embody the information of PDCCH service condition attributes, may include：The symbol of PDCCH occupies
Rate can also be PDCCH mean powers etc..Downlink transmission resources of the base station (including macro base station and LPN) between UE can be with
It is divided from the angle of time, the radio frames of maximum time quantum a length of 10ms when being can be divided into a length of 1ms at 10
Subframe, each subframe is divided into the time slot of a length of 0.5ms at 2 again.Each time slot is by 6 or 7 orthogonal frequency division multiplexing
(Orthogonal Frequency Division Multiplexing, abbreviation OFDM) symbol forms.It is effective in order to support
Data transmission, long term evolution (Long-Term Evolution, abbreviation LTE) standard define control channel.In general, under configuration
Uplink Control Channel (Physical Downlink Control CHannel, abbreviation PDCCH) occupies in 1 subframe
First 0~3 (for the narrowband systems of part, command character number at most may be 4) of OFDM symbol, specific PDCCH
The occupancy situation of symbol will be adjusted according to specific system configuration, service conditions and channel condition.
Above-mentioned low power base station can be micro-base station (being referred to as low-power micro-base station Pico eNB) or enhanced family
Front yard base station (HeNB).In above-mentioned steps S402, it is more than dry that above-mentioned low power base station, which determines that the UE that it is serviced is disturbed degree,
When disturbing thresholding, obtain macro base station under each macrocell PDCCH information, below by taking above-mentioned low power base station is Pico eNB as an example into
Row explanation, the detailed process of aforesaid operations can be：Pico eNB report the interference that would know that suffered by PUE by the measurement of PUE
Degree, when this interference more serious (such as more than interference threshold or threshold value), to reduce or avoiding Downlink Control Information
Interference, Pico eNB can by X2 control plane message request macro base stations measure statistics a period of time (such as designated time period) in
Each macrocell sends the symbol occupancy situation of PDCCH.Correspondingly, macro base station can be retained in above-mentioned designated time period in fact
Border sends the symbol numbers of PDCCH, to calculate PDCCH symbol occupancies.
Above-mentioned X2 control planes request message refers to Pico eNB and interaction of the macro base station by X2 interface into row information, the X2
Control plane request message can be existing resource status request (RESOURCE STATUS REQUEST) message, can also be
The message of newly-increased X2 message, reporting measurement statistical result can be resource status update (RESOURCE STATUS UPDATE)
Message can also be reply message corresponding with the X2 request messages increased newly.In addition, there is no X2 to connect between HeNB and macro base station
Mouthful, it can no longer be carried out herein as Pico eNB by the S1 interface transparent transmission informations of MME, remaining operating process in this way
Detailed description.When there is no X2 interface between Pico eNB and macro base station (the fact that certain is more rare), can also be via
The S1 interface transparent transmission informations of MME, such case are also applied for letters of the enhanced HeNB (can support multifrequency point) between macro base station
Breath interaction.If above-mentioned low power base station is HeNB, there is no X2 interface between HeNB and macro base station, only there are S1 between MME
Interface, therefore need to carry out information exchange by S1 interfaces between HeNB and macro base station.
Corresponding to the acquisition situation of the symbol occupancy of the PDCCH of above-mentioned macro base station, present embodiments provide a kind of preferred
Embodiment, i.e., above-mentioned low power base station send measurement request message to macro base station, which asks above-mentioned macro base
It stands and calculates the symbol occupancy that each macrocell in designated time period sends PDCCH, above-mentioned macro base station receives above-mentioned measurement request
After message, the symbol numbers of the practical PDCCH sent of each macrocell in above-mentioned designated time period are recorded, according to the symbol of the PDCCH
Number number calculates the symbol occupancy for the PDCCH that each macrocell is sent, and sends feedback message to above-mentioned low power base station,
In, which carries the symbol occupancy of above-mentioned PDCCH, and then, it is anti-that above-mentioned low power base station receives above-mentioned macro base station
The symbol occupancy of the PDCCH of feedback.The measurement request message that above-mentioned low power base station is sent to macro base station can be resource status
The feedback message of request message, above-mentioned low power base station can be resource status new information.In this way low power base station can and
When get macro base station PDCCH symbol occupancy the case where, the convenient adjustment for subsequently timely making scheduling strategy.
Above-mentioned macro base station can measure at any time to send the symbol of PDCCH by each macrocell in period measurement designated time period
Number occupancy, in order to improve the utilization rate of resource and obtain the real-time of information, Pico eNB can ask macro base station periodic
Above-mentioned statistical result is reported, timely to make the adjustment of scheduling strategy.Therefore, a kind of preferred implementation is present embodiments provided
Mode, above-mentioned measurement request message can also carry the finger for indicating above-mentioned macro base station period measurement and periodic report measurement result
Show that information, above-mentioned low power base station adjust scheduling strategy according to the above-mentioned PDCCH information of acquisition and may include：Above-mentioned low-power base
It stands and scheduling strategy is adjusted according to the symbol occupancy of the PDCCH of the current period of acquisition.
In above-mentioned steps S404, above-mentioned low power base station adjusts scheduling strategy, tool according to the above-mentioned PDCCH information of acquisition
The scheduling strategy of body may include one of following three kinds of situations：It is frequency that above-mentioned low power base station, which selects the cell of transmission PDCCH,
The cell different higher than the frequency of macrocell of specified threshold from the symbol occupancy of above-mentioned PDCCH；Above-mentioned low power base station choosing
The cell for selecting transmission PDCCH is that the symbol occupancy of above-mentioned PDCCH is less than the macrocell of above-mentioned specified threshold；Above-mentioned low-power base
It stands and the down transmitting power of above-mentioned UE is adjusted to by specified power according to the symbol occupancy of above-mentioned PDCCH.Wherein, low-power is selected
After selecting out above-mentioned cell, it will it is as possible in the cell of selection to transmit PDCCH symbols more, and transmitted in not selected cell
PDCCH symbols few as possible.For example, if the PDCCH symbol occupancies of macro base station feedback cell 1 are higher than cell 2 and cell 3,
Then low power base station can more transmit PDCCH symbols in cell 2 and 3, and a small amount of PDCCH symbols are transmitted in cell 1.
No matter above-mentioned any strategy is used, can subtracted in the case where above-mentioned low power base station and above-mentioned macro base station work normally
Few interference between the two.
The transmission method of the control information of low power base station side is described above, it below will be to corresponding macro base
The transmission method of control information of side of standing is described.Fig. 5 is the biography of control information in macro base station side according to the ... of the embodiment of the present invention
The flow chart of transmission method, as shown in figure 5, this approach includes the following steps (step S502- step S508)：
Step S502, macro base station receive the UE that low power base station reports and are disturbed situation；
Step S504, above-mentioned macro base station determine that the annoyance level of above-mentioned UE be more than interference door according to the above-mentioned situation that is disturbed
In limited time, the PDCCH information of each cell under above-mentioned low power base station is obtained；
Step S506, above-mentioned macro base station adjust scheduling strategy according to the above-mentioned PDCCH information of acquisition；
Step S508, above-mentioned macro base station is based on the above-mentioned scheduling strategy transmission control information after adjustment.
By the above method, macro base station dispatches plan according to the PDCCH information adjustment of each cell under the low power base station of acquisition
Slightly, then the macro base station reduces or avoids control letter between base station based on the above-mentioned scheduling strategy transmission control information after adjustment
The interference of breath improves the larger problem of the interference of the relevant technologies medium and small interval control information transmission, and then improves radio chains
The quality on road improves the performance of overall network.
Above-mentioned PDCCH information may include：The symbol occupancy of PDCCH, above-mentioned low power base station can be micro-base station (
It is properly termed as low-power micro-base station Pico eNB) or enhanced Home eNodeB (HeNB).In above-mentioned steps S504, above-mentioned macro base
Stand according to it is above-mentioned be disturbed situation determine be more than interference threshold to the annoyance level of above-mentioned UE when, obtain under above-mentioned low power base station
The PDCCH information of each cell, specific acquisition process can be：Above-mentioned macro base station sends to above-mentioned low power base station and measures request
Message, the symbol which asks above-mentioned low power base station to calculate each cell transmission PDCCH in designated time period account for
With after above-mentioned low power base station receives above-mentioned measurement request message, recording that each cell in above-mentioned designated time period is practical to be sent
PDCCH symbol numbers, calculate the symbol occupancy for the PDCCH that each cell is sent according to the symbol numbers of the PDCCH, and to
Above-mentioned macro base station sends feedback message, wherein the feedback message carries the symbol occupancy of above-mentioned PDCCH, then above-mentioned macro
Base station receives the symbol occupancy of the PDCCH of above-mentioned low power base station feedback.The survey that above-mentioned low power base station is sent to macro base station
It can be resource status request message (i.e. RESOURCE STATUS REQUEST message) to measure request message, correspondingly, above-mentioned low
The feedback message of power base station can be resource status new information (i.e. RESOURCE STATUS UPDATE).Such macro base station
It is the case where symbol occupancy of the PDCCH of low power base station can be got in time, convenient subsequently timely to make scheduling strategy
Adjustment.
Above-mentioned low power base station can measure at any time each cell to send PDCCH's in period measurement designated time period
Symbol occupancy, in order to improve the utilization rate of resource and obtain the real-time of information, above-mentioned macro base station can ask low power base station
Above-mentioned statistical result is periodically reported, timely to make the adjustment of scheduling strategy.Therefore, one kind is present embodiments provided
Preferred embodiment, above-mentioned measurement request message can also carry the above-mentioned low power base station period measurement of instruction and periodic report
The instruction information of measurement result, above-mentioned macro base station adjust scheduling strategy according to the above-mentioned PDCCH information of acquisition and may include：It is above-mentioned
Macro base station adjusts scheduling strategy according to the symbol occupancy of the PDCCH of the current period of acquisition.
In above-mentioned steps S506, above-mentioned macro base station adjusts scheduling strategy according to the above-mentioned PDCCH information of acquisition, specifically
Scheduling strategy may include one of following three kinds of situations：It is frequency and the PDCCH that above-mentioned macro base station, which selects the cell of transmission PDCCH,
Symbol occupancy higher than specified threshold cell the different cell of frequency；The cell of above-mentioned macro base station selection transmission PDCCH
It is less than the cell of above-mentioned specified threshold for the symbol occupancy of the PDCCH；Above-mentioned macro base station is occupied according to the symbol of above-mentioned PDCCH
Rate is adjusted is adjusted to specified power with the down transmitting power of cell co-frequency cell where above-mentioned UE.No matter using above-mentioned any
Strategy can reduce interference between the two in the case where above-mentioned low power base station and above-mentioned macro base station work normally.
The realization process of above-described embodiment is described in detail with reference to preferred embodiments and drawings.
Embodiment one
The present embodiment is illustrated with the Pico eNB citings in low power base station.When in the coverage area in macro base station or
Pico eNB nearby are deployed, and when certain Macro cell is identical as the carrier frequency of certain Pico cell, by the Pico cells
(being properly termed as Victim cells) service PUE may frequency Macro cells (it is small to be properly termed as Aggressor together by this
Area) downstream transmission signals interference.In order to reduce the interference that PUE receives downgoing control signal, macro base station is needed with Pico eNB
It is staggered as possible and controls the transmission of information on same frequency carrier wave.Fig. 6 is the control information of Pico eNB according to the ... of the embodiment of the present invention
Transmission method flow chart, as shown in fig. 6, this method comprises the following steps (step S602- step S610)：
Step S602, Pico eNB would know that PUE is current suffered according to the measurement reported result of the PUE of own services
Disturbed condition.
Step S604 (judges whether that serious specific thresholding can be determined by Pico eNB when above-mentioned interference is more serious
It is fixed), PicoeNB asks macro base station to measure each Macro cells in statistics a period of time (such as 200ms) and sends PDCCH symbols
Situation, i.e., each Macro cells send the symbol occupancy of PDCCH respectively in this period.Pico eNB may also require that macro base
It stands and periodically reports this measurement result, for example reported once per 200ms, what is reported is each Macro cells in the 200ms
PDCCH symbol occupancies.
The calculating of the symbol occupancy of PDCCH should be the PDCCH symbols actually sent in this period of time (such as 200ms)
Number divided by this period of time (such as above-mentioned 200ms) in transmissible PDCCH total number of symbols, be previously mentioned that usual feelings
3 PDCCH symbols or 4 PDCCH symbols at most can be transmitted in 1ms under condition.
Pico eNB can also execute the symbol of PDCCH after knowing the annoyance level suffered by PUE in request macro base station
Before occupancy measures statistics, first the situation that is disturbed of above-mentioned PUE is notified to macro base station, for example X2 load informations can be passed through
(LOAD INFORMATION) notifies the above-mentioned situation that is disturbed to macro base station.Macro base station knows that the signal transmission of itself influences
After the signal transmission of Pico eNB, macro base station, which can be made, to be reduced the signal transmission of itself to the greatest extent and causes to do to Pico eNB
The scheduling strategy disturbed, for example, macro base station can according to the wireless environment residing for each MUE, by part MUE switch to it is suitable, with
The Macro cells of Pico cell alien frequencies, or it (is the MUE by other Macro cells to carry out cross-carrier scheduling to part MUE
Service, but present access subzone is constant).
By the above-mentioned means, when Pico eNB request macro base stations measure the symbol occupancy of statistics PDCCH, it may be
There are the lower Macro cells of the symbol occupancy of a PDCCH；Or after the Dispatching adjustment of macro base station, current Pico is small
The interference of downlink that area is subject to is relatively low, then Pico eNB can continue this interfere sent in lowered cell it is more
Information (i.e. more PDCCH symbols) is controlled, such Pico eNB can be according to RESOURCE STATUS UPDATE messages
Periodic measurement statistical result and the transmission for keeping PDCCH, if happen change (for example macro base station resource situation is nervous,
A lower cell of PDCCH symbol occupancies can not be kept again) when, Pico eNB can be from RESOURCE
This information is obtained in STATUSUPDATE message in time to make adjustment appropriate.
Step S606 after macro base station agrees to above-mentioned request, carries out statistical measurement to the symbol occupancy of PDCCH, will count
Result notice gives Pico eNB.
Fig. 7 is the schematic diagram of Pico eNB and the information interaction of macro base station, as shown in fig. 7, receiving Pico in macro base station
After the above-mentioned request message that eNB is sent, if this measurement operation can be executed, (macro base station needs are retained in finger in this case
The symbol numbers of PDCCH are actually sent in section of fixing time), then macro base station is replying RESOURCE STATUS RESPONSE (moneys
Source condition responsive) message when give response, otherwise carry refusal information and additional Reason For Denial within the message, or work as
When requested measurement not can perform in RESOURCE STATUS REQUEST (resource situation request) message, macro base station returns
Multiple RESOURCE STATUS FAILURE (resource situation failure) message.Above-mentioned request message can be the RESOURCE in Fig. 7
The symbol occupancy of STATUS REQUEST message, requested PDCCH can pass through the newly-increased parameter or word in this message
Section instruction, such as newly-increased PDCCH usage fields carry the instruction, which can also be that a new X2 control plane disappears
Breath.If above-mentioned measurement request should be replied at this time and the matched sound of request message with a new X2 control plane message
Answer message.
If macro base station agrees to execute that the measurement of the PDCCH symbol occupancies of Pico eNB requests, macro base station will survey
The result counted is measured to notify to give Pico eNB by RESOURCE STATUS UPDATE (resource situation update) information reporting, or
Person is to carry out information reporting by the X2 control plane message of one and newly-increased information matches.If in RESOURCE
What is asked in STATUSREQUEST message is that periodic measurement reports, then macro base station is according to the cycle time specified in message
Timing send RESOURCE STATUS UPDATE messages with report in this section of cycle time measure statistics as a result, so as to
Pico eNB make scheduling strategy adjustment appropriate in time.
In above-mentioned request message, it is single that the measurement statistics of PDCCH symbol occupancies, which is with each cell that macro base station is established,
(can be identified and be distinguish with cell identity) of position, and the mark and frequency point information of each cell establish X2 between two base stations
It has been interacted when interface.Therefore, Pico eNB would know that after receiving RESOURCE STATUS UPDATE messages in each cell
Or the PDCCH occupancy situations on frequency point.
Step S608, Pico eNB adjusts scheduling strategy according to above-mentioned statistical result, that is to say, that avoids as far as possible
With the higher Macro cells of some PDCCH occupancy with PDCCH is sent in the Pico cells of frequency, downlink control letter is thus reduced
Interference suffered by number.
If PDCCH symbol occupancy of the above-mentioned statistical result showed currently in Aggressor cells is relatively low, that
PicoeNB can send PDCCH symbols in Victim cell relays superventions.If the PDCCH symbols in Aggressor cells account for
Still higher with rate, then Pico eNB are according to the wireless environment of PUE in Victim cells, (wireless environment can be by the survey of UE
Amount, which reports, to be known), part UE can be switched to the Pico of other and the higher Macro cells alien frequencies of PDCCH symbol occupancies
Cell, or to part PUE carry out it is cross-carrier scheduling (i.e. by other be disturbed the Pico cells of lesser extent for the UE service,
But access the cell current UE is constant) or the down transmitting power etc. appropriate enhanced to being disturbed PUE.In short,
Pico eNB are appropriate to make scheduling strategy according to the PDCCH occupancy situations of each Macro cells known, with reduce PUE by
The downgoing control signal interference arrived.
Step S610, Pico eNB carries out PDCCH transmission according to the above-mentioned scheduling strategy after adjustment.
It for the transmission method of the PDCCH of the sides above-mentioned Pico eNB, can also be initiated by macro base station side, when macro base station is known
When itself disturbing the downlink transfer of Pico eNB (for example receiving LOAD INFORMATION message), macro base station request
PicoeNB periodically reports the PDCCH symbol occupancy situations of each Pico cells, above-mentioned request message to be sent to by macro base station
Statistical result is reported to macro base station by PicoeNB, Pico eNB, macro base station made according to result can reduce accordingly it is small to Pico
The scheduling strategy that area interferes, macro base station carry out PDCCH transmission further according to the scheduling strategy.Its specific flow and this implementation
Example is similar, and details are not described herein.
Embodiment two
The present embodiment carries out information exchange by the S1 interfaces of MME for HeNB with macro base station, to complete control information
The process of transmission is described.The transmission method flow chart of the control information shown in Fig. 8 for being HeNB, as shown in figure 8, this method
Include the following steps (step S802- step S810)：
Step S802, HeNB would know that HUE according to the measurement reported result of the corresponding cells of HeNB (hereinafter simply referred to as HUE)
The disturbed condition being currently subject to.
Step S804, when HeNB know certain HUE receive middle intensity downlink interference (can also be certain HUE by
Interference reach to a certain degree or threshold value) when, HeNB can ask macro base station measure statistics a period of time (can be specified time
Section) the interior symbol occupancy in each Macro cells transmission PDCCH.
Fig. 9 is the schematic diagram of HeNB and the information interaction of macro base station, because there is no X2 interface between HeNB and macro base station,
PDCCH can be measured to statistics request message carrying in existing S1 message by HeNB or the S1 message new as one is sent to
MME carries the identity of target macro base station in the request message simultaneously.MME turns the request message according to the identity
Issue target macro base station.In addition, HeNB can also ask the periodic report measurement results of macro base station.The cell and frequency of macro base station
Point information can be by running and safeguarding (Operation and Maintenance, referred to as OAM) operational notification HeNB, can also
It is to be obtained when HeNB and MME establishes S1 interfaces.
If deploying HeNB in the coverage area of macro base station, can be passed at this time by HeNB by the MUE of macro base station service
The interference of defeated signal.Since no X2 interface and HeNB are merely able to establish a HeNB cell, institute between current macro base station and HeNB
When knowing the MUE of own services when macro base station by compared with strong jamming, macro base station can only (can according to known HeNB cell information
S1 interactive interfacings information can be configured or passed through by operator), it avoids sending out in the Macro cells with the HeNB cell with frequency as possible
PDCCH symbols are sent, so that reduction is interfered by HeNB downstream transmission signals or the power appropriate for increasing transmission PDCCH
To resist the interference that HeNB transmits signal.
If there is the enhanced HeNB of multiple HeNB cells can be established, then knowing the MUE of own services by dry
The macro base station disturbed can ask HeNB measurements to report the PDCCH symbol occupancies of each HeNB cell, and scheme is the same as HeNB request macro base stations
It carries out PDCCH symbol occupancy measurements to report being the same, details are not described herein for detailed process.
Step S806 after macro base station agrees to above-mentioned request, carries out statistical measurement to the symbol occupancy of PDCCH, will count
Result notice is to HeNB.
As shown in figure 9, if macro base station agrees to execute that the measurement request of HeNB, macro base station will measure the result of statistics
It reports notice to HeNB by corresponding S1 response messages, the identity for carrying HeNB is needed in the response message.On if
It states and is required of periodic measurement in request message and reports, then macro base station is sent according to the cycle time timing specified in message
S1 response messages, report measure in this section of cycle time statistics as a result, so as to HeNB make timely, scheduling plan appropriate
Slightly adjust.Above-mentioned S1 message is required for forwarding by the transparent transmission of MME.
Step S808, HeNB adjust scheduling strategy according to above-mentioned statistical result.
If above-mentioned reported result shows that the symbol occupancy of the currently PDCCH in Aggressor cells is relatively low,
So HeNB can send the PDCCH symbols of needs in Victim cell relays superventions.If the PDCCH in Aggressor cells
Symbol occupancy is still higher, then HeNB is according to the wireless environment of PUE in Victim cells, (wireless environment can be by UE's
Measurement, which reports, to be known), part PUE can be switched to the Pico of other and the higher Macro cells alien frequencies of PDCCH symbol occupancies
Cell, or cross-carrier scheduling is carried out to part PUE and (is disturbed smaller Pico cells by other to service for the PUE, still
Access the cell current PUE is constant) or the downlink signal transmission power etc. appropriate enhanced to being disturbed PUE.Always
It, HeNB makes scheduling strategy appropriate according to the PDCCH symbol occupancy situations for each Macro cells known, to reduce
The downgoing control signal interference that PUE is subject to.
Step S810, HeNB carry out PDCCH transmission according to the above-mentioned scheduling strategy after adjustment.
It for the transmission method of the PDCCH of the above-mentioned sides HeNB, can also be initiated by macro base station side, when macro base station knows itself
When disturbing the downlink signal transmission of HeNB, macro base station request HeNB periodically reports the PDCCH symbols of each Pico cells to account for
With rate situation, above-mentioned request message is sent to HeNB by macro base station, and statistical result is reported to macro base station, macro base station foundation by HeNB
As a result the scheduling strategy that can be reduced interfered to the corresponding cells of HeNB accordingly is made, macro base station is further according to the scheduling strategy
Carry out PDCCH transmission.Its specific flow is similar with the present embodiment, and details are not described herein.
Corresponding to the transmission method of the control information of above-mentioned low power base station side, a kind of control information is present embodiments provided
Transmitting device, which is set in low power base station, for realizing above-described embodiment.Figure 10 is according to embodiments of the present invention
Low power base station side control information transmitting device structure diagram, as shown in Figure 10, which includes：Acquisition of information mould
Block 10, scheduling strategy adjustment module 12 and transmission module 14.The structure is illustrated below.
Data obtaining module 10, when being disturbed degree more than interference threshold of UE for determining low power base station service,
Obtain the PDCCH information of each macrocell under macro base station；
Scheduling strategy adjusts module 12, is connected to data obtaining module 10, for what is obtained according to data obtaining module 10
Above-mentioned PDCCH information adjusts scheduling strategy；
Transmission module 14 is connected to scheduling strategy adjustment module 12, after being adjusted based on scheduling strategy adjustment module 12
Above-mentioned scheduling strategy transmission control information.
By above-mentioned apparatus, data obtaining module 10 determines that the degree that is disturbed of the UE of low power base station service is more than interference
When thresholding, the PDCCH information of each macrocell under macro base station is obtained, then scheduling strategy adjusts module 12 according to the PDCCH information
Scheduling strategy is adjusted, transmission module 14 is reduced or avoided and controlled between base station based on the scheduling strategy transmission control information after adjustment
The interference of information processed improves the larger problem of the interference of the relevant technologies medium and small interval control information transmission, and then improves nothing
The quality of wired link improves the performance of overall network.
Above-mentioned PDCCH information may include：The symbol occupancy of PDCCH.Data obtaining module 10 obtains macro base station
PDCCH information includes：Data obtaining module 10 sends measurement request message to macro base station, which asks macro base station
The symbol occupancy that each macrocell in designated time period sends PDCCH is measured, then data obtaining module 10 receives macro base station
The symbol occupancy of the PDCCH of feedback.
Above-mentioned measurement request message also carries instruction macro base station period measurement and the instruction letter of periodic report measurement result
Breath.Scheduling strategy adjusts module 12：Scheduling strategy adjusts module
12 adjust scheduling strategy according to the symbol occupancy of the PDCCH of the current period of acquisition.Specific scheduling strategy include it is following it
One：It is that the symbol occupancy of frequency and above-mentioned PDCCH are higher than and specify that scheduling strategy adjustment module 12, which select the cell of transmission PDCCH,
The different cell of the frequency of the macrocell of threshold value；It is above-mentioned PDCCH that scheduling strategy adjustment module 12, which selects the cell of transmission PDCCH,
Symbol occupancy be less than above-mentioned specified threshold macrocell；Scheduling strategy adjustment module 12 is accounted for according to the symbol of above-mentioned PDCCH
The down transmitting power of above-mentioned UE is adjusted to specified power with rate.Above-mentioned low power base station can be micro-base station (Pico eNB)
Or enhanced Home eNodeB (HeNB).
Corresponding to the transmission method of the control information of above-mentioned macro base station side, a kind of biography of control information is present embodiments provided
Defeated device, which is set on macro base station, for realizing above-described embodiment.Figure 11 is macro base station according to the ... of the embodiment of the present invention
The structure diagram of the transmitting device of the control information of side, as shown in figure 11, which includes：Receiving module 20, acquisition of information mould
Block 22, scheduling strategy adjustment module 24 and transmission module 26.The structure is illustrated below.
Receiving module 20 is disturbed situation for receiving the UE that low power base station reports；
Data obtaining module 22 is connected to receiving module 20, and above-mentioned feelings are disturbed for what is received according to receiving module 20
When condition determines the annoyance level to above-mentioned UE more than interference threshold, the PDCCH information of each cell under above-mentioned low power base station is obtained；
Scheduling strategy adjusts module 24, is connected to data obtaining module 22, for what is obtained according to data obtaining module 22
Above-mentioned PDCCH information adjusts scheduling strategy；
Transmission module 26 is connected to scheduling strategy adjustment module 24, is based on adjusting for adjusting module 24 according to scheduling strategy
Above-mentioned scheduling strategy transmission control information after whole.
By above-mentioned apparatus, data obtaining module 22 is determined according to the above-mentioned situation that is disturbed that receiving module 20 receives to upper
When stating the annoyance level of UE more than interference threshold, the PDCCH information of each cell under above-mentioned low power base station is obtained, plan is then dispatched
Slightly adjustment module 24 adjusts scheduling strategy according to the PDCCH information, and transmission module 26 transmits control based on the scheduling strategy after adjustment
Information processed reduces or avoids the interference of control information between base station, improves the control information transmission of the relevant technologies medium and small interval
Larger problem is interfered, and then improves the quality of Radio Link, improves the performance of overall network.
Above-mentioned PDCCH information may include：The symbol occupancy of PDCCH.Data obtaining module 22 obtains above-mentioned low-power
The PDCCH information of base station includes：Data obtaining module 22 sends measurement request message, measurement request to above-mentioned low power base station
The above-mentioned low power base station of message request measures the symbol occupancy that each cell in designated time period sends PDCCH.Acquisition of information
Module 22 receives the symbol occupancy of the PDCCH of above-mentioned low power base station feedback.
Above-mentioned measurement request message also carries the above-mentioned low power base station period measurement of instruction and periodic report measurement result
Instruction information.Scheduling strategy adjusts module 24：Scheduling strategy
It adjusts module 24 and scheduling strategy is adjusted according to the symbol occupancy of the PDCCH of the current period of acquisition.Specific scheduling strategy packet
Include following one：Scheduling strategy adjustment module 24 selects the cell of transmission PDCCH for the symbol occupancy of frequency and above-mentioned PDCCH
The cell different higher than the frequency of the cell of specified threshold；It is upper that scheduling strategy adjustment module 24, which selects the cell of transmission PDCCH,
The symbol occupancy for stating PDCCH is less than the cell of above-mentioned specified threshold；Scheduling strategy adjusts symbol of the module 24 according to above-mentioned PDCCH
The down transmitting power of the adjustment of number occupancy and cell co-frequency cell where above-mentioned UE is adjusted to specified power.Above-mentioned low-power base
Standing can be micro-base station (Pico eNB) or enhanced Home eNodeB (HeNB).
As can be seen from the above description, the embodiment of the present invention makes drop by the symbol occupancy of the PDCCH of cell
The scheduling strategy of low control channel interference, then low power base station is based on scheduling strategy transmission control information, to improve
UE is decoded into power to data channel, improves the performance of overall network.
Obviously, those skilled in the art should be understood that each module of the above invention or each step can be with general
Computing device realize that they can be concentrated on a single computing device, or be distributed in multiple computing devices and formed
Network on, optionally, they can be realized with the program code that computing device can perform, it is thus possible to which they are stored
It is performed by computing device in the storage device, and in some cases, it can be with different from shown in sequence execution herein
The step of going out or describing, either they are fabricated to each integrated circuit modules or by them multiple modules or
Step is fabricated to single integrated circuit module to realize.In this way, the present invention is not limited to any specific hardware and softwares to combine.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, any made by repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of transmission method of control information, it is characterised in that including：
Low power base station determines when being disturbed degree more than interference threshold of the user equipment (UE) that it is serviced, and obtains under macro base station
The physical downlink control channel PDCCH information of each macrocell；
The low power base station adjusts scheduling strategy according to the PDCCH information of acquisition；
The low power base station is based on the scheduling strategy transmission control information after adjustment；
Wherein, the PDCCH information includes：The symbol occupancy of PDCCH；
The PDCCH information of each macrocell includes under the low power base station acquisition macro base station：
The low power base station sends measurement request message to macro base station, and the measurement request message asks the macro base station to calculate
Each macrocell sends the symbol occupancy of PDCCH in designated time period；
After the macro base station receives the measurement request message, record that each macrocell in the designated time period is practical to be sent
The symbol numbers of PDCCH calculate the symbol occupancy for the PDCCH that each macrocell is sent according to the symbol numbers of the PDCCH, and
Feedback message is sent to the low power base station, wherein the feedback message carries the symbol occupancy of the PDCCH；
The low power base station receives the symbol occupancy of the PDCCH of the macro base station feedback.
2. according to the method described in claim 1, it is characterized in that, the measurement request message also carries the instruction macro base
The instruction information for period measurement and the periodic report measurement result of standing；
The low power base station adjusts scheduling strategy according to the PDCCH information of acquisition：The low power base station according to
The symbol occupancy of the PDCCH of the current period of acquisition adjusts scheduling strategy.
3. method according to claim 1 or 2, which is characterized in that the measurement request message is that resource status request disappears
Breath；
The feedback message is resource status new information.
4. method according to claim 1 or 2, which is characterized in that the low power base station is micro-base station or enhanced family
Front yard base station.
5. a kind of transmission method of control information, it is characterised in that including：
Macro base station receives the user equipment (UE) that low power base station reports and is disturbed situation；
The macro base station is disturbed situation according to and determines when being more than interference threshold to the annoyance level of the UE, described in acquisition
The physical downlink control channel PDCCH information of each cell under low power base station；
The macro base station adjusts scheduling strategy according to the PDCCH information of acquisition；
The macro base station is based on the scheduling strategy transmission control information after adjustment；
Wherein, the PDCCH information includes：The symbol occupancy of PDCCH；
The PDCCH information that the macro base station obtains each cell under the low power base station includes：
The macro base station sends measurement request message to the low power base station, and the measurement request message asks the low-power
Base station calculates the symbol occupancy that each cell in designated time period sends PDCCH；
After the low power base station receives the measurement request message, each practical transmission of cell in the designated time period is recorded
PDCCH symbol numbers, the symbol occupancy for the PDCCH that each cell is sent is calculated according to the symbol numbers of the PDCCH,
And send feedback message to the macro base station, wherein the feedback message carries the symbol occupancy of the PDCCH；
The macro base station receives the symbol occupancy of the PDCCH of the low power base station feedback.
6. according to the method described in claim 5, it is characterized in that, the measurement request message also carries the instruction low work(
The instruction information of rate base station period measurement and periodic report measurement result；
The macro base station adjusts scheduling strategy according to the PDCCH information of acquisition：The macro base station is worked as according to acquisition
The symbol occupancy of the PDCCH in preceding period adjusts scheduling strategy.
7. method according to claim 5 or 6, which is characterized in that the measurement request message is that resource status request disappears
Breath；
The feedback message is resource status new information.
8. method according to claim 5 or 6, which is characterized in that the low power base station is micro-base station or enhanced family
Front yard base station.
9. a kind of transmitting device of control information, which is characterized in that described device is set in low power base station, including：
Data obtaining module, for determining that the degree that is disturbed of the user equipment (UE) of the low power base station service is more than interference door
In limited time, the physical downlink control channel PDCCH information of each macrocell under macro base station is obtained；
Scheduling strategy adjusts module, and the PDCCH information for being obtained according to described information acquisition module adjusts scheduling strategy；
Transmission module, for based on the scheduling strategy transmission control information after scheduling strategy adjustment module adjustment；
Wherein, the PDCCH information includes：The symbol occupancy of PDCCH；
Described information acquisition module is additionally operable to, to macro base station transmission measurement request message, described in the measurement request message request
Macro base station calculates the symbol occupancy that each macrocell in designated time period sends PDCCH；The macro base station receives the measurement
After request message, the symbol numbers of the practical PDCCH sent of each macrocell in the designated time period are recorded, according to described
The symbol numbers of PDCCH calculate the symbol occupancy for the PDCCH that each macrocell is sent, and send and feed back to the low power base station
Message, wherein the feedback message carries the symbol occupancy of the PDCCH；Receive the described of the macro base station feedback
The symbol occupancy of PDCCH.
10. a kind of transmitting device of control information, which is characterized in that described device is set on macro base station, including：
Receiving module is disturbed situation for receiving the user equipment (UE) that low power base station reports；
Data obtaining module, for according to the interference journey for being disturbed situation determination described in receiving module reception to the UE
When degree is more than interference threshold, the physical downlink control channel PDCCH information of each cell under the low power base station is obtained；
Scheduling strategy adjusts module, and the PDCCH information for being obtained according to described information acquisition module adjusts scheduling strategy；
Transmission module, for based on the scheduling strategy transmission control information after scheduling strategy adjustment module adjustment；
Wherein, the PDCCH information includes：The symbol occupancy of PDCCH；
Described information acquisition module is additionally operable to, and measurement request message, the measurement request message are sent to the low power base station
The low power base station is asked to calculate the symbol occupancy that each cell in designated time period sends PDCCH；The low power base station
After receiving the measurement request message, the symbol numbers of the practical PDCCH sent of each cell in the designated time period are recorded,
The symbol occupancy for the PDCCH that each cell is sent is calculated according to the symbol numbers of the PDCCH, and is sent to the macro base station
Feedback message, wherein the feedback message carries the symbol occupancy of the PDCCH；Receive the low power base station feedback
The PDCCH symbol occupancy.
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| CN102104965A (en) * | 2011-02-14 | 2011-06-22 | 中兴通讯股份有限公司 | Method and device for coordinating inter-cell interference, and network node |
| CN102202353A (en) * | 2010-03-24 | 2011-09-28 | 电信科学技术研究院 | Method, device and system for interference coordination control |
| CN102215533A (en) * | 2010-04-02 | 2011-10-12 | 电信科学技术研究院 | Method and equipment for coordinating interference on control channel in heterogeneous system |
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| CN102202353A (en) * | 2010-03-24 | 2011-09-28 | 电信科学技术研究院 | Method, device and system for interference coordination control |
| CN102215533A (en) * | 2010-04-02 | 2011-10-12 | 电信科学技术研究院 | Method and equipment for coordinating interference on control channel in heterogeneous system |
| CN102104965A (en) * | 2011-02-14 | 2011-06-22 | 中兴通讯股份有限公司 | Method and device for coordinating inter-cell interference, and network node |
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