CN102215533A - Method and equipment for coordinating interference on control channel in heterogeneous system - Google Patents
Method and equipment for coordinating interference on control channel in heterogeneous system Download PDFInfo
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- CN102215533A CN102215533A CN2010101405346A CN201010140534A CN102215533A CN 102215533 A CN102215533 A CN 102215533A CN 2010101405346 A CN2010101405346 A CN 2010101405346A CN 201010140534 A CN201010140534 A CN 201010140534A CN 102215533 A CN102215533 A CN 102215533A
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Abstract
The invention discloses a method for coordinating interference on a control channel in a heterogeneous system. The method comprises the following steps of: when a serving base station discovers the interference of an interfering base station in certain user equipment, the interfering base station receives interference information transmitted to the interfering base station by the serving base station; the interfering base station judges whether to perform transmission control on the control channel or not according to the interference information; and if a judgment result indicates that the transmission control is required to be performed on the control channel, the interfering base station performs the transmission control on the control channel. In the method, the interference information is interacted between the serving base station and the interfering base station, and the interfering base station performs the transmission control on the control channel, thereby effectively relieving the interference on the control channel in the heterogeneous system.
Description
Technical field
The present invention relates to communication technical field, relate in particular to disturbance coordination method on the control channel and equipment in a kind of heterogeneous system.
Background technology
In LTE (Long Term Evolution, Long Term Evolution) R8 system,, need to consider the interference coordination problem of control channel in order to guarantee the performance of control channel.And for fear of the interference between control channel, main method is that the control channel between different districts carries out resource when mapping, and by the cyclic shift of cell-level, method such as interweave is avoided the interference between different macrocell control channels.
For example, PCFICH (Physical Control Format Indicator Channel, Physical Control Format Indicator Channel) channel, 4 REG (Resource-element Group with mapping PCFICH, the resource group) equidistantly is distributed on the whole system bandwidth, to obtain the gain of frequency diversity; And this mapping is that the sub-district is exclusive, and different districts has different side-play amounts, thereby has reduced the interference between different districts PCFICH.
Again for example, PDCCH (Physical Downlink Control Channel, Physical Downlink Control Channel) channel, interference on the PDCCH channel, when carrying out the mapping of PDCCH resource, at first carry out the cyclic shift of a cell-level, then by row-column interleaver with the data discrete of each PDCCH on whole frequency band and control area.
In Fig. 1, there is polytype low power base station in heterogeneous network schematic diagram as shown in Figure 1, for example, and HeNB (Home eNodeB), PeNB (little base station), relay (relaying) etc.Because the overlapping covering between the dissimilar base stations, and the reasons such as imbalance on the power make that the disturbed condition in the heterogeneous network becomes very complicated.Wherein, for the interference on the data channel, can pass through the method for ICIC (Inter-cell interference coordination, Inter-Cell Interference Coordination) and avoid; And for the interference on the control channel, especially under the single carrier case, when using identical resource between the base station of phase mutual interference, the disturbed condition on the control channel can be very serious.
In the prior art, the interference on the control channel, for example, the control channel under single carrier case disturbs, and can realize by the following method:
(1) avoid the control channel under the single carrier case to disturb by the method for E-PDCCH (Extended-Physical Dedicated Control Channel, expansion Dedicated Physical Control Channel).As shown in Figure 2, there are strongly disturbing two base stations each other, by mourning in silence on base station therein or using low-power, simultaneously at PDSCH (Physical Downlink Shared Channel, Physical Downlink Shared Channel) zone redefines a new PDCCH zone, to avoid interference each other.
(2) avoid the control channel under the single carrier case to disturb by Time shifting (time migration) method.As shown in Figure 3, by the displacement on time domain, on corresponding resource, carry out adjustment on muting (mourning in silence) or the power simultaneously and avoid interference on the control channel between the base station of phase mutual interference.
But in realizing process of the present invention, the inventor finds to exist at least in the prior art following problem:
When the mode of using E-PDCCH avoids control channel to disturb,, wait the interference problem of channel to solve synchronously for PBCH (Physicalbroadcast channel, Physical Broadcast Channel).And when the mode of using Time shifting avoided control channel to disturb, requiring needed between the different base stations to carry out synchronously, and this requirement is the comparison strictness, especially for FDD (Frequency Division Duplex, Frequency Division Duplexing (FDD)) system.
As can be seen, the scheme that proposes in the prior art all can not solve the interference problem that exists in the heterogeneous network fully.In the design of R8 system, because the distance between the macro base station is far away, even the SNR of edge customer is (Signal to Noise Ratio, signal to noise ratio) neither be very low, in the time of can passing through between power boosting (power enhancing) or the base station resource mapping, the methods such as cyclic shift of carrying out cell-level solve the interference problem of control channel.And in heterogeneous system, because the imbalance and number of C SG (the Closed Subscriber Group of power between the base station, the closed signed user group) existence of sub-district, making has low that considerable user's SNR can be very, can't solve the interference problem of control channel.
Summary of the invention
The invention provides disturbance coordination method on the control channel and equipment in a kind of heterogeneous system,, solve the interference of control channel between the base station in the heterogeneous system with under the prerequisite that guarantees the R8 system compatibility.
In order to achieve the above object, the invention provides the disturbance coordination method on the control channel in a kind of heterogeneous system, comprising:
When serving BS found to have subscriber equipment to be interfered the interference of base station, described interference base station received the interfere information that sends to described interference base station from described serving BS;
Described interference base station judges whether that according to described interfere information needs transmit control on control channel;
When judged result when being, described interference base station transmits control on described control channel.
The invention provides the disturbance coordination method on the control channel in a kind of heterogeneous system, comprising:
Serving BS judges whether the be interfered interference of base station of subscriber equipment;
If when having subscriber equipment to be interfered the interference of base station, described serving BS sends interfere information to described interference base station, transmits control by described interference base station on described control channel.
The invention provides a kind of base station equipment, comprising:
Receiver module is used for receiving the interfere information that sends to described interference base station from described serving BS when serving BS finds to have subscriber equipment to be interfered the interference of base station;
Judge module is used for judging whether that according to the described interfere information that described receiver module receives needs transmit control on control channel;
Control module, be used for when the judged result of described judge module when being, on described control channel, transmit control.
The invention provides a kind of base station equipment, comprising:
Judge module is used to judge whether the be interfered interference of base station of subscriber equipment;
Sending module when being used for judged result when judge module and being having subscriber equipment to be interfered the interference of base station, sends interfere information to described interference base station, transmits control by described interference base station on described control channel.
Compared with prior art, the present invention has the following advantages at least:
By interactive interference information between serving BS and interference base station, and on described control channel, transmit control, thereby can effectively alleviate the interference problem of control channel in the heterogeneous network by interference base station.
Description of drawings
In order to be illustrated more clearly in technical scheme of the present invention, the accompanying drawing of required use is done to introduce simply in will describing embodiment below, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is a heterogeneous network schematic diagram in the prior art;
The situation schematic diagram of Fig. 2 for avoiding the control channel under the single carrier case to disturb by the method for E-PDCCH in the prior art;
The situation schematic diagram of Fig. 3 for avoiding the control channel under the single carrier case to disturb by the method for Time shifting in the prior art;
Fig. 4 is the disturbance coordination method schematic flow sheet on the control channel in a kind of heterogeneous system of providing of the embodiment of the invention one;
Fig. 5 is the disturbance coordination method schematic flow sheet on the control channel in a kind of heterogeneous system of providing of the embodiment of the invention two;
Fig. 6 is the interference coordination schematic diagram on the PCFICH channel in the embodiment of the invention;
Fig. 7 is the interference coordination schematic diagram of PBCH channel in the embodiment of the invention;
Fig. 8 is that schematic diagram is avoided in the interference of PDCCH in the embodiment of the invention;
Fig. 9 is a kind of base station equipment structural representation that the embodiment of the invention provides;
Figure 10 is the another kind of base station equipment structural representation that the embodiment of the invention provides.
Embodiment
Below in conjunction with the accompanying drawing among the present invention, the technical scheme among the present invention is clearly and completely described, obviously, described embodiment only is a part of embodiment of the present invention, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that is obtained under the creative work prerequisite.
In mobile communications network, along with growing requirement to data speed and covering, traditional provides the method for access can not meet the demands with macro base station, by adopting cell splitting, and, can be good at addressing this is that at hot zones or some lower powered base stations of indoor deployment (Home base station, Pico base station, Femto base station and Relay etc.).
Because low power base station is a kind of base station equipment that is applied under family's indoor environment, working environment or other the little overlay environment, can make operator that high data rate, attractive business more cheaply are provided more.But the introducing of low power base station can cause interference in the system with respect to even more serious with layer network, for the interference on the control channel, especially under the situation of single carrier, does not have suitable solution.
Based on above-mentioned situation, the present invention proposes the disturbance coordination method on the control channel in a kind of heterogeneous system, to address the above problem.
The embodiment of the invention one provides the disturbance coordination method on the control channel in a kind of heterogeneous system, as shown in Figure 4, may further comprise the steps:
Concrete, according to the actual needs, this interference base station can determine whether to transmit control on control channel, for example, when the priority of serving BS is higher, then this interference base station can cause interference for fear of the subscriber equipment to serving BS, thereby transmits control on control channel; And when the priority of self was higher, then this interference base station can not cause interference to handle avoiding to the subscriber equipment of serving BS.
Concrete, described interference base station transmits control on described control channel, comprising: described interference base station is in the adjustment of carrying out on the described control channel on the power; Perhaps, described interference base station is mourned in silence on described control channel; Perhaps, described interference base station carries out the coordination of resource mapping on described control channel.
In the embodiment of the invention, described interference base station transmits control on described control channel, comprise: for all same contents that periodically sends, and described serving BS sends identical control channel or the signal in position with described interference base station, and described interference base station is controlled the interference of coordinating on described control channel or the signal by power.
Described interference base station transmits control on described control channel, comprise: for complete overlapping control channel or the signal of resource mapping position between described serving BS and the described interference base station, described interference base station is avoided interference on described control channel or the signal by the coordination on power control or the resource mapping position.
In said process, the process of described power control is coordinated dynamically to adjust by described interference base station and described serving BS mutually; Coordination on the described resource mapping position comprises coordination on the time domain or the coordination on the frequency domain.
In addition, described interference base station transmits control on described control channel, comprise: for control channel or the signal that resource mapping position between described serving BS and the described interference base station staggers fully, described interference base station is by the interference on power control described control channel of reduction or the signal.
As seen, by adopting method provided by the invention, can effectively alleviate the interference problem of control channel in the heterogeneous network.
The embodiment of the invention two provides the disturbance coordination method on the control channel in a kind of heterogeneous system, as shown in Figure 5, may further comprise the steps:
Concrete, (this subscriber equipment can be for a plurality of at the subscriber equipment for access, processing procedure with a subscriber equipment in the embodiment of the invention is that example describes) provide in the process of service, this serving BS need be judged whether the be interfered interference of base station of this subscriber equipment.
In the embodiment of the invention, serving BS can report according to the measurement of this subscriber equipment, and perhaps self is to the measurement of this subscriber equipment statistics, judges whether the be interfered interference of base station of subscriber equipment.
Be understandable that when subscriber equipment was in the center of this serving BS, then the signal strength signal intensity of the serving BS that receives of this subscriber equipment was higher, channel condition is better; And if subscriber equipment is when being in the edge of this serving BS, the signal strength signal intensity of the serving BS that receives is lower, and the channel condition of this subscriber equipment is relatively poor.
Concrete, find subscriber equipment when serving BS and be subjected to the strong jamming of mutual interference base station, then for the correct reception of the control channel that guarantees the user, this serving BS can be given the interference base station of phase mutual interference alternately with the information such as disturbed condition (being interfere information) of self, requires interference base station to carry out the control corresponding channel disturbance and avoids.
Concrete, according to the actual needs, this interference base station can determine whether to transmit control on control channel, for example, when the priority of serving BS is higher, then this interference base station can cause interference for fear of the subscriber equipment to serving BS, thereby transmits control on control channel; And when the priority of self was higher, then this interference base station can not cause interference to handle avoiding to the subscriber equipment of serving BS.
Concrete, interference base station can transmit control accordingly on the control channel resource, to reduce mutual interference.Wherein, this transmission control is specially interference base station in the adjustment of carrying out on the control channel on the power; Perhaps, interference base station is mourned in silence on control channel; Perhaps, interference base station carries out the coordination of resource mapping on control channel.
Need to prove, in the embodiment of the invention, for all same contents that periodically sends, and serving BS and identical control channel or the signal in interference base station transmission position, this interference base station is controlled the interference of coordinating on control channel or the signal by power.For example, when Physical Broadcast Channel PBCH channel took place to disturb, interference base station was adjusted the number of sub frames of high-low power on control channel according to the interfere information of serving BS.Further, if the edge customer quantity of serving BS is lower than when presetting first numerical value, the power that interference base station use on the reservation subframe position is lower than default second value sends PBCH, and use is higher than the power transmission PBCH that presets third value on other three PBCH subframe position; If the edge customer quantity of serving BS is higher than when presetting the 4th numerical value, interference base station uses the power that is lower than default the 5th numerical value to send a plurality of PBCH on the PBCH of a plurality of identical information subframe position.
For complete overlapping control channel or the signal of resource mapping position between serving BS and the interference base station, interference base station is avoided interference on control channel or the signal by the coordination on power control or the resource mapping position.For example, when the physical downlink control channel PDCCH channel takes place to disturb, use the power that is higher than default the 6th numerical value to send on the subframe of PDCCH at interference base station, interference base station notification service base station uses the power that is lower than default the 7th numerical value to send PDCCH; Use the power that is higher than default the 8th numerical value to send on the subframe of PDCCH at serving BS, interference base station uses the power that is lower than default the 9th numerical value to send PDCCH.Again for example, when the resource of paging paging message or system information block SIB information takes place to disturb, if letter message of the paging between interference base station and the serving BS or SIB information are transmitted on same subframe, interference base station uses different running time-frequency resource transmission paging letter message or the SIB information on the same subframe.
It should be noted that in said process the process of power control is coordinated dynamically to adjust by interference base station and serving BS mutually; Coordination on the resource mapping position comprises coordination on the time domain or the coordination on the frequency domain.
In addition, for control channel or the signal that resource mapping position between serving BS and the interference base station staggers fully, interference base station is by the interference on power control reduction control channel or the signal.For example, when Physical Control Format Indicator Channel PCFICH channel took place to disturb, interference base station transmitted control on control channel, comprising: interference base station carries out power control on the time-frequency position of the PCFICH channel that serving BS is uploaded.
Need to prove, in embodiments of the present invention, above-mentioned default first numerical value, default second value, default third value, default the 4th numerical value, default the 5th numerical value, default the 6th numerical value, default the 7th numerical value, default the 8th numerical value, default the 9th numerical value are optional according to actual needs numerical value, and its size can be adjusted according to actual needs.Wherein, when edge customer quantity is lower than default first numerical value, the edge customer negligible amounts is described; When edge customer quantity is higher than default the 4th numerical value, illustrate that edge customer quantity is more; When power is lower than default second value, illustrate that performance number is lower; When power is higher than default third value, illustrate that performance number is higher; When power is lower than default the 5th numerical value, illustrate that performance number is lower; When power is higher than default the 6th numerical value, illustrate that performance number is higher; When power is lower than default the 7th numerical value, illustrate that performance number is lower; When power is higher than default the 8th numerical value, illustrate that performance number is higher; When power is lower than default the 9th numerical value, illustrate that performance number is lower.
As seen, by adopting method provided by the invention, can effectively alleviate the interference problem of control channel in the heterogeneous network.
For the technical scheme that illustrates that more clearly the embodiment of the invention provides, below be described in detail at PCFICH channel, PBCH channel, PDCCH channel and paging message or SIB (System InformationBlock, system information block) information.In actual applications, the technical scheme that the embodiment of the invention provides has more than at above-mentioned channel, can also be applied in other the channel, gives unnecessary details no longer in detail in the embodiment of the invention.
In the embodiment of the invention, disturbing scene mutually with LTE system macro base station and low power base station is example, is further detailed at different control channels, and wherein, this macro base station is an interference base station, and this low power base station is a serving BS.
Interference coordination on the PCFICH channel.Wherein, control channel or the signal of interference coordination on this PCFICH channel for staggering fully for resource mapping position between serving BS and the interference base station, at this moment, interference base station is by the interference on power control reduction control channel or the signal, and the process of power control is coordinated dynamically to adjust by interference base station and serving BS mutually.
Interference coordination schematic diagram on the PCFICH channel as shown in Figure 6, when a low power base station has just been started shooting, this low power base station need read the cell ID (reading according to the strong jamming situation) of macro base station, and read the resource reservation situation of this macro base station according to this cell ID, determine the cell ID of self then, wherein, the selection mode of cell ID can be chosen from one group of available cell ID set for low power base station is adaptive, also can be that the unit by a centralized control distributes.The principle that this cell ID chooses is to guarantee that the position of the PCFICH mapping of low power base station is to stagger with macro base station, to avoid and the conflicting fully of the PCFICH channel of macro base station.
After low power base station provided service for subscriber equipment, if find to have subscriber equipment to be subjected to the interference of this macro base station, then this low power base station need send interfere information to this macro base station, transmits control by macro base station on control channel.
Further, macro base station also need carry out power control on the time-frequency position of the PCFICH channel that low power base station is uploaded; Be that macro base station simultaneously carries out certain power control and further reduces interference on the low power base station of phase mutual interference is uploaded the time-frequency position of PCFICH.
The interference coordination of PBCH channel.Wherein, the interference coordination of PBCH channel is at the same content that periodically sends for all, and serving BS sends identical control channel or the signal in position with interference base station, and at this moment, interference base station is controlled the interference of coordinating on control channel or the signal by power; The process of power control is coordinated dynamically to adjust by interference base station and serving BS mutually.
The interference coordination schematic diagram of PBCH channel as shown in Figure 7.Wherein, on the PBCH channel, because the PBCH channel is to upload defeated in the 0th subframe of each radio frames, repeat to transmit four times, and all comprise complete system information in each transmission, for the reasonable user of channel condition, can just can obtain complete system information by receiving only a PBCH in the subframe.
Based on above-mentioned situation, when a low power base station has just been started shooting, low power base station need read the cell ID of macro base station, and read the resource reservation situation of this macro base station according to this cell ID, for example, read this and read macro base station reserved resource position, wherein, this reserved resource position can be which subframe macro base station is reserved on and passes PBCH with low-power; At this moment, low power base station need send PBCH with high power on the position that macro base station is reserved.
After low power base station provides service for subscriber equipment, suppose to exist between macro base station and the low power base station mutual interference, then low power base station need send interfere information to this macro base station, transmits control by macro base station on control channel.
Concrete, receive the interfere information of low power base station at macro base station after, this macro base station can be adjusted the number of sub frames of using high-low power flexibly according to the disturbed condition of low power base station.
Further, if the edge customer equipment of low power base station service is less, disturb when hanging down, then macro base station still only sends PBCH (on the subframe 0 as the radio frames 4K+2 among Fig. 7) with extremely low power on the subframe position of reserving, in order to guarantee the PBCH demodulation performance of UE, this macro base station can use higher power on the position of other three biography PBCH simultaneously; Same, low power base station need be carried out corresponding power adjustment.
In like manner, more at the edge customer equipment of low power base station service, when channel condition was relatively poor, this macro base station can dispose the PBCH receptivity that methods such as using low-power on a plurality of PBCH subframes improves the edge customer of low power base station service.
The interference of PDCCH is avoided.Wherein, the interference of this PDCCH is avoided at for complete overlapping control channel or the signal of resource mapping position between serving BS and the interference base station, at this moment, interference base station is avoided interference on control channel or the signal by the coordination on power control or the resource mapping position; The process of power control is coordinated dynamically to adjust by interference base station and serving BS mutually; Coordination on the resource mapping position comprises coordination on the time domain or the coordination on the frequency domain.
Schematic diagram is avoided in the interference of PDCCH as shown in Figure 8.Wherein, in the design of R8, PDCCH is mapped in whole frequency band and the control area when interweaving, and for fear of the interference between the PDCCH between macro base station and the low power base station, equally also can realize by the method for power control.
Suppose to exist between base station and the low power base station mutual interference, when a low power base station has just been started shooting, this low power base station need read the cell ID of macro base station, and reads the resource reservation situation of this macro base station according to this cell ID, determines the cell ID of self then.
After low power base station provided service for subscriber equipment, if find to have subscriber equipment to be subjected to the interference of this macro base station, then this low power base station need send interfere information to this macro base station, transmits control by macro base station on control channel.
Concrete, notify the situation of the power coordination between macro base station and the low power base station by the centralized control of macro base station.
Use high power to send out on the subframe of PDCCH at macro base station, low power base station uses lower power to send out PDCCH, only the subscriber equipment of service centre.And using high power to send out on the subframe of PDCCH in low power base station, macro base station uses low-power to send out PDCCH to reduce the interference on the PDCCH.
Interference coordination on the resource of transmission paging message (paging) and SIB information.Wherein, interference coordination on the resource of this transmission paging message and SIB information be at for complete overlapping control channel or the signal of resource mapping position between serving BS and the interference base station, at this moment, interference base station is avoided interference on control channel or the signal by the coordination on power control or the resource mapping position; The process of power control is coordinated dynamically to adjust by interference base station and serving BS mutually; Coordination on the resource mapping position comprises coordination on the time domain or the coordination on the frequency domain.
Concrete, in the R8 of LTE system, paging information and SIB information are mapped to shared region and transmit, in heterogeneous network, mutual by information between the base station, the paging of the base station of phase mutual interference and SIB information can avoid carrying paging, the interference of the resource of SIB information by the coordination of resource location mapping.
Concrete, if letter message of the paging between macro base station and the low power base station or SIB information are transmitted on same subframe, then macro base station can use different running time-frequency resource transmission paging letter message or the SIB information on the same subframe.
With the interference coordination on the SIB information is example, when the SIB information between the base station of phase mutual interference (being macro base station and low power base station) is transmitted on same subframe (as SIB1), then can the SIB information of macro base station and low power base station be transmitted on the different running time-frequency resources on the same subframe by the method that realizes; And by the coordination between macro base station and the low power base station, different base stations can dispose other SIB information by SIB1 and transmit on the subframe of not conflicting.
Based on the inventive concept same with said method, a kind of base station equipment also is provided in the embodiment of the invention, as shown in Figure 9, comprising:
Described control module 13 specifically is used for, for all same contents that periodically sends, and described serving BS and identical control channel or the signal in described interference base station transmission position, control the interference of coordinating on described control channel or the signal by power.
Described control module 13 specifically is used for, for complete overlapping control channel or the signal of resource mapping position between described serving BS and the described interference base station, avoid interference on described control channel or the signal by the coordination on power control or the resource mapping position.
The process that it should be noted that described power control is coordinated dynamically to adjust by described interference base station and described serving BS mutually.
Coordination on the described resource mapping position comprises coordination on the time domain or the coordination on the frequency domain.
Described control module 13 specifically is used for, and for control channel or the signal that resource mapping position between described serving BS and the described interference base station staggers fully, controls the interference that reduces on described control channel or the signal by power.
Wherein, each module of apparatus of the present invention can be integrated in one, and also can separate deployment.Above-mentioned module can be merged into a module, also can further split into a plurality of submodules.
Based on the inventive concept same with said method, a kind of base station equipment also is provided in the embodiment of the invention, as shown in figure 10, comprising:
Described judge module 21 specifically is used for, and reports according to the measurement of described subscriber equipment, and perhaps self is to the measurement statistics of described subscriber equipment, judge whether subscriber equipment be interfered the base station interference and generate interfere information.
Sending module 22 when being used for judged result when judge module 21 and being having subscriber equipment to be interfered the interference of base station, sends interfere information to described interference base station, transmits control by described interference base station on described control channel.Described interfere information comprises one or more in the following content: the level of interference of quantification, and the transmitted power situation, edge customer accounts for total user's ratio, and the edge service demand accounts for the ratio of aggregate demand.
Wherein, each module of apparatus of the present invention can be integrated in one, and also can separate deployment.Above-mentioned module can be merged into a module, also can further split into a plurality of submodules.
Through the above description of the embodiments, those skilled in the art can be well understood to the present invention and can realize by the mode that software adds essential general hardware platform, can certainly pass through hardware, but the former is better execution mode under a lot of situation.Based on such understanding, the part that technical scheme of the present invention contributes to prior art in essence in other words can embody with the form of software product, this computer software product is stored in the storage medium, comprise that some instructions are with so that a computer equipment (can be a personal computer, server, the perhaps network equipment etc.) carry out the described method of each embodiment of the present invention.
It will be appreciated by those skilled in the art that accompanying drawing is the schematic diagram of a preferred embodiment, module in the accompanying drawing or flow process might not be that enforcement the present invention is necessary.
It will be appreciated by those skilled in the art that the module in the device among the embodiment can be distributed in the device of embodiment according to the embodiment description, also can carry out respective change and be arranged in the one or more devices that are different from present embodiment.The module of the foregoing description can be merged into a module, also can further split into a plurality of submodules.
The invention described above embodiment sequence number is not represented the quality of embodiment just to description.
More than disclosed only be several specific embodiment of the present invention, still, the present invention is not limited thereto, any those skilled in the art can think variation all should fall into protection scope of the present invention.
Claims (24)
1. the disturbance coordination method on the control channel in the heterogeneous system is characterized in that, comprising:
When serving BS was found to have subscriber equipment to be subjected to the interference of row interference base station, described interference base station received the interfere information that sends to described interference base station from described serving BS;
Described interference base station judges whether that according to described interfere information needs transmit control on control channel;
When judged result when being, described interference base station transmits control on described control channel.
2. the method for claim 1 is characterized in that, described interference base station transmits control on described control channel, comprising:
Described interference base station is in the adjustment of carrying out on the described control channel on the power; Perhaps,
Described interference base station is mourned in silence on described control channel; Perhaps,
Described interference base station carries out the coordination of resource mapping on described control channel.
3. the method for claim 1 is characterized in that, described interfere information comprises one or more in the following content:
The level of interference that quantizes, the transmitted power situation, edge customer accounts for total user's ratio, and the edge service demand accounts for the ratio of aggregate demand.
4. as each described method of claim 1-3, it is characterized in that described interference base station transmits control on described control channel, comprising:
For all same contents that periodically sends, and described serving BS and identical control channel or the signal in described interference base station transmission position, described interference base station is controlled the interference of coordinating on described control channel or the signal by power.
5. method as claimed in claim 4 is characterized in that, described interference base station transmits control on described control channel, comprising:
For complete overlapping control channel or the signal of resource mapping position between described serving BS and the described interference base station, described interference base station is avoided interference on described control channel or the signal by the coordination on power control or the resource mapping position.
6. method as claimed in claim 5 is characterized in that, the process of described power control is coordinated dynamically to adjust by described interference base station and described serving BS mutually.
7. method as claimed in claim 5 is characterized in that, the coordination on the described resource mapping position comprises coordination on the time domain or the coordination on the frequency domain.
8. as each described method of claim 1-3, it is characterized in that described interference base station transmits control on described control channel, comprising:
For control channel or the signal that resource mapping position between described serving BS and the described interference base station staggers fully, described interference base station is by the interference on power control described control channel of reduction or the signal.
9. the disturbance coordination method on the control channel in the heterogeneous system is characterized in that, comprising:
Serving BS judges whether the be interfered interference of base station of subscriber equipment;
If when having subscriber equipment to be interfered the interference of base station, described serving BS sends interfere information to described interference base station, transmits control by described interference base station on described control channel.
10. method as claimed in claim 9 is characterized in that, described serving BS judges whether the be interfered interference of base station of subscriber equipment, also comprises before:
The resource reservation situation of described interference base station is obtained in described serving BS start, and chooses the cellID of self, with when carrying out the mapping of control channel resource, and the interference fully of the cell-level that staggers.
11. method as claimed in claim 9 is characterized in that, described serving BS judges whether the be interfered interference of base station of subscriber equipment, comprising:
Described serving BS reports according to the measurement of described subscriber equipment, and perhaps self is to the measurement of described subscriber equipment statistics, judge whether subscriber equipment be interfered the base station interference and generate interfere information.
12. method as claimed in claim 9 is characterized in that, described interfere information comprises one or more in the following content:
The level of interference that quantizes, the transmitted power situation, edge customer accounts for total user's ratio, and the edge service demand accounts for the ratio of aggregate demand.
13. a base station equipment is characterized in that, comprising:
Receiver module is used for receiving the interfere information that sends to described interference base station from described serving BS when serving BS finds to have subscriber equipment to be interfered the interference of base station;
Judge module is used for judging whether that according to the described interfere information that described receiver module receives needs transmit control on control channel;
Control module, be used for when the judged result of described judge module when being, on described control channel, transmit control.
14. equipment as claimed in claim 13 is characterized in that, described control module specifically is used for,
In the adjustment of carrying out on the described control channel on the power; Perhaps,
On described control channel, mourn in silence; Perhaps,
On described control channel, carry out the coordination of resource mapping.
15. equipment as claimed in claim 13 is characterized in that, described interfere information comprises one or more in the following content:
The level of interference that quantizes, the transmitted power situation, edge customer accounts for total user's ratio, and the edge service demand accounts for the ratio of aggregate demand.
16. as each described equipment of claim 13-15, it is characterized in that described control module specifically is used for,
For all same contents that periodically sends, and described serving BS and identical control channel or the signal in described interference base station transmission position, the interference of coordinating on described control channel or the signal controlled by power.
17. equipment as claimed in claim 16 is characterized in that, described control module specifically is used for,
For complete overlapping control channel or the signal of resource mapping position between described serving BS and the described interference base station, avoid interference on described control channel or the signal by the coordination on power control or the resource mapping position.
18. method as claimed in claim 17, the process of described power control is coordinated dynamically to adjust by described interference base station and described serving BS mutually.
19. method as claimed in claim 17, the coordination on the described resource mapping position comprise coordination on the time domain or the coordination on the frequency domain.
20. as each described equipment of claim 13-15, it is characterized in that described control module specifically is used for,
For control channel or the signal that resource mapping position between described serving BS and the described interference base station staggers fully, control the interference that reduces on described control channel or the signal by power.
21. a base station equipment is characterized in that, comprising:
Judge module is used to judge whether the be interfered interference of base station of subscriber equipment;
Sending module when being used for judged result when judge module and being having subscriber equipment to be interfered the interference of base station, sends interfere information to described interference base station, transmits control by described interference base station on described control channel.
22. equipment as claimed in claim 21 is characterized in that, also comprises:
Acquisition module is used for obtaining the resource reservation situation of described interference base station when start, and chooses the cell ID of self, with when carrying out the mapping of control channel resource, and the interference fully of the cell-level that staggers.
23. equipment as claimed in claim 21 is characterized in that, described judge module specifically is used for,
Measurement according to described subscriber equipment reports, and perhaps self is to the measurement of described subscriber equipment statistics, judge whether subscriber equipment be interfered the base station interference and generate interfere information.
24. equipment as claimed in claim 21 is characterized in that, described interfere information comprises one or more in the following content:
The level of interference that quantizes, the transmitted power situation, edge customer accounts for total user's ratio, and the edge service demand accounts for the ratio of aggregate demand.
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