CN101895891B - Inter-cell interference coordination method and device for implementing same - Google Patents
Inter-cell interference coordination method and device for implementing same Download PDFInfo
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- CN101895891B CN101895891B CN 200910085501 CN200910085501A CN101895891B CN 101895891 B CN101895891 B CN 101895891B CN 200910085501 CN200910085501 CN 200910085501 CN 200910085501 A CN200910085501 A CN 200910085501A CN 101895891 B CN101895891 B CN 101895891B
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Abstract
The invention discloses an inter-cell interference coordination method and a device for implementing the same. The method comprises the following steps of: partitioning each cell into a central area, a transition area and an edge area according to the channel quality parameter of a terminal in the cell; distributing a frequency resource to the terminal which is currently permitted to adopt multiple input multiple output (MIMO) technology in the transition area of the cell on a transmission band; and transmitting data through the MIMO technology by using the distributed frequency resource. The invention also provides a device for realizing inter-cell interference coordination. A base station comprises a parameter acquisition module, a partition module, a first resource distribution module and a data transmission module. Due to the adoption of the method and the device of the invention, the frequency spectrum utilization ratio of a long term evolution (LTE) system can be enhanced.
Description
Technical field
The present invention relates to Long Term Evolution (LTE, Long Term Evolution) technology, relate in particular to the device of a kind of inter-cell interference coordination method and this method of realization.
Background technology
The LTE network is third generation partner program (3GPP; 3rd Generation Partnership Project) normal structure promote, be main new generation of wireless network with the high-speed data service; Its descending employing OFDM (OFDMA, Orthogonal Frequency Division Multiplexing Access) technology, up employing single carrier OFDMA (SC-OFDMA, Single Carrier-OFDMA) wireless access technology; And in conjunction with multiple-input and multiple-output (MIMO; Multiple-Input Multiple-Out-put) technology with the raising LTE throughput of system and the availability of frequency spectrum, and then improves data rate.
For data rate and the covering that improves cell edge region, the LTE system also need effectively reduce the interference of minizone, at present, adopts Inter-Cell Interference Coordination to reduce the interference of minizone more.
Inter-Cell Interference Coordination is the coordination through the minizone; Available resources to cell edge region are carried out certain restriction; Improving the signal-to-jamming ratio (SIR, Signal Interference Ratio) of adjacent sub-district on these resources, and then the data rate and the covering that improve cell edge region.The Inter-Cell Interference Coordination scheme comprises static interference coordination, quasistatic interference coordination and dynamic interference coordination; Wherein, static interference coordinates when on-premise network, to accomplish the negotiation of cell edge region resource limit, can adjust the cell edge region resource limit in the period of network operation, but the cycle of adjustment is longer; The quasistatic interference coordination is on the basis that static interference is coordinated, and forms according to factors such as network load adjustment cell edge region resource limit; Dynamic interference coordination is dynamically adjusted the cell edge region resource limit at network operation period, and the time scale of adjustment is several to dozens of transmission time gaps (TTI, Transmission Time Interval), much smaller than the duration of a service conversation.
In the prior art, static interference is coordinated not require the Signalling exchange between the sub-district, but is made that the availability of frequency spectrum of LTE system is low; The quasistatic interference coordination depends on the minizone Signalling exchange of some, coordinates to compare with static interference, and the availability of frequency spectrum of LTE system increases, but increase rate depends on the frequency of minizone Signalling exchange; And dynamic interference coordination relies on the availability of frequency spectrum that frequent minizone Signalling exchange has improved the LTE system greatly, but frequent minizone Signalling exchange is had higher requirement to equipment.
Summary of the invention
In view of this, main purpose of the present invention is to provide the device of a kind of inter-cell interference coordination method with this method of realization, can improve the availability of frequency spectrum of LTE system.
For achieving the above object, technical scheme of the present invention is achieved in that
A kind of inter-cell interference coordination method, this method comprises:
Each sub-district is divided into central area, transitional region and fringe region according to the channel quality parameter at terminal in this sub-district with this microzonation;
Be the terminal distribution frequency resource that multiple-input and multiple-output MIMO technology is adopted in current permission in this sub-district transitional region on transmission band, and use assigned frequency resource to adopt MIMO technical transmission data.
Further, said channel quality parameter is down channel quality parameter or uplink signal-channel quality parameter;
Accordingly, said each sub-district is divided into central area, transitional region and fringe region according to the channel quality parameter at terminal in this sub-district with this microzonation and is:
Each sub-district is divided into descending central area, descending transitional region and descending fringe region according to the down channel quality parameter at terminal in this sub-district with this microzonation; Perhaps,
Each sub-district is divided into up central area, up transitional region and ascending edge zone according to the uplink signal-channel quality parameter at terminal in this sub-district with this microzonation;
Said is that current permission adopts the terminal distribution frequency resource of MIMO technology to be in this sub-district transitional region on transmission band:
It on downstream bands the terminal distribution downstream frequency resource that the MIMO technology is adopted in current permission in this cell downlink transitional region; Perhaps,
It on upstream band the terminal distribution upstream frequency resource that the MIMO technology is adopted in current permission in this cell uplink transitional region.
Further, this method further comprises:
For the Physical Resource Block on the terminal distribution downstream bands in the descending central area as the downstream frequency resource; Be the Physical Resource Block in the downstream arrangements frequency sets of this cell allocation in advance for the terminal distribution in the descending fringe region, as the downstream frequency resource;
For the Physical Resource Block on the terminal distribution upstream band in the up central area as the upstream frequency resource; For the terminal distribution in the ascending edge zone is the interior Physical Resource Block of up configuration frequency set of this cell allocation in advance, as the upstream frequency resource.
Further, said is that current permission adopts the terminal distribution downstream frequency resource of MIMO technology to comprise in this cell downlink transitional region on downstream bands:
When the base station receives the Relative Narrowband TX Power RNTP signaling of this adjacent cells of cells transmission, the bit corresponding physical Resource Block that in the received RNTP signaling is 0 is formed the usable frequency set, and cover the descending usable frequency set of having stored;
The order of judging the channel of terminal to report indicates whether to be not less than 2; If be not less than; Descending usable frequency set according to current storage; Be this terminal distribution downstream frequency resource, and when pre-assigned downstream arrangements frequency sets does not comprise the downstream frequency resource of being distributed, send the RNTP signaling to this adjacent cells of cells; If less than, be the Physical Resource Block in the downstream arrangements frequency sets of this cell allocation in advance for this terminal distribution, as the downstream frequency resource.
Further, said descending usable frequency set according to current storage, for this terminal distribution downstream frequency resource is:
Steps A 1, according to the size of the descending sub-band channel quality indication CQI of terminal to report, the Physical Resource Block group ordering with each descending subband of this terminal comprises obtains downlink physical Resource Block group sequence;
Step B1, get first Physical Resource Block group of said downlink physical Resource Block group sequence;
Whether the common factor of step C1, the definite descending usable frequency set of being stored and the Physical Resource Block group of getting is empty, if be not sky, then execution in step D1; If be sky, then execution in step E1;
Whether other terminal of step D1, this sub-district of base station judges takies the whole Physical Resource Block in the said common factor, if, execution in step E1 then; Otherwise, execution in step F1;
Step e 1, the Physical Resource Block group of getting said downlink physical Resource Block group sequence next bit; Return step C1; In said downlink physical Resource Block group sequence, there is not the Physical Resource Block group do not got; The descending usable frequency intersection of sets collection that does not find yet and stored is not empty Physical Resource Block group, then is that said terminal distribution is in advance for the Physical Resource Block in the downstream arrangements frequency sets of this cell allocation, as the downstream frequency resource;
Said terminal is distributed to as the downstream frequency resource with the Physical Resource Block that is not taken by other terminal of this sub-district in the said common factor in step F 1, base station.
Further, said is that current permission adopts the terminal distribution upstream frequency resource of MIMO technology to comprise in this cell uplink transitional region on upstream band:
The base station is formed up usable frequency set with the bit corresponding physical Resource Block that among HII and/or the OI is 0, and is covered the up usable frequency set of having stored after receiving the high interference indication HII and/or overload indication OI that this adjacent cells of cells sends;
The order of judging the channel at the terminal that the base station records indicates whether to be not less than 2; If be not less than, the up usable frequency set according to current storage is this terminal distribution upstream frequency resource; And when pre-assigned up configuration frequency set does not comprise the upstream frequency resource of being distributed; Send HII to this adjacent cells of cells, when base station measurement transships to certain or some ascending physical signal Resource Block, send OI to this adjacent cells of cells; If less than, for this terminal distribution is the interior Physical Resource Block of up configuration frequency set of this cell allocation in advance, as the upstream frequency resource.
Further, said up usable frequency set according to current storage, for this terminal distribution upstream frequency resource is:
The size of steps A 2, each up subband CQI of terminal of recording according to the base station, the Physical Resource Block group ordering with each up subband of this terminal comprises obtains ascending physical signal Resource Block group sequence;
Step B2, get first Physical Resource Block group of said ascending physical signal Resource Block group sequence;
Whether the common factor of step C2, the definite up usable frequency set of being stored and the Physical Resource Block group of getting is empty, if be not sky, then execution in step D2; If be sky, then execution in step E2;
Whether other terminal of step D2, this sub-district of base station judges takies the whole Physical Resource Block in the said common factor, if, execution in step E2 then; Otherwise, execution in step F2;
Step e 2, the Physical Resource Block group of getting said ascending physical signal Resource Block group sequence next bit; Return step C2; In said ascending physical signal Resource Block group sequence, there is not the Physical Resource Block group do not got; The up usable frequency intersection of sets collection that does not find yet and stored is not empty Physical Resource Block group, then is that said terminal distribution is in advance for the Physical Resource Block in the up configuration frequency set of this cell allocation, as the upstream frequency resource;
Said terminal is distributed to as the upstream frequency resource with the Physical Resource Block that is not taken by other terminal of this sub-district in the said common factor in step F 2, base station.
The present invention also provides a kind of device of realizing Inter-Cell Interference Coordination, and this device comprises: parameter acquisition module, division module, first resource distribution module, data transmission module; Wherein,
Parameter acquisition module is used to receive the channel quality parameter of terminal to report in this sub-district; Be used to measure the channel quality parameter at terminal in this sub-district;
Divide module, be used for this microzonation being divided into central area, transitional region and fringe region according to channel quality parameter that receive or that measure;
First resource distribution module is used on transmission band, adopting the terminal distribution frequency resource of MIMO technology for current permission in this sub-district transitional region;
Data transmission module is used to use the frequency resource of being distributed to adopt MIMO technical transmission data.
Further, said parameter acquisition module comprises, descending first receiver module and out-hole run module; Wherein,
Descending first receiver module is used to receive the down channel quality parameter of terminal to report in this sub-district;
The out-hole run module is used to measure the uplink signal-channel quality parameter at terminal in this sub-district;
Said division module comprises: descending division module, up division module; Wherein,
Descending division module is used for according to said down channel quality parameter this microzonation being divided into descending central area, descending transitional region and descending fringe region;
Up division module is used for according to said uplink signal-channel quality parameter this microzonation being divided into up central area, up transitional region and ascending edge zone;
Said first resource distribution module comprises: descending first resource distribution module, up first resource distribution module; Wherein,
Descending first resource distribution module, be used on downstream bands in this cell downlink transitional region, current permission adopts the terminal distribution downstream frequency resource of MIMO technology; And be used to interior, the current terminal distribution that cannot adopt the MIMO technology of this cell downlink transitional region in advance for the Physical Resource Block in the downstream arrangements frequency sets of this cell allocation, as the downstream frequency resource;
Up first resource distribution module, be used on upstream band in this cell uplink transitional region, current permission adopts the terminal distribution upstream frequency resource of MIMO technology; And be used to interior, the current terminal distribution that does not allow to adopt the MIMO technology of this cell uplink transitional region in advance for the Physical Resource Block in the up configuration frequency set of this cell allocation, as the upstream frequency resource;
Said data transmission module comprises: first downstream data transport module, the first transmitting uplink data module; Wherein, the first downstream data transport module is used to use the frequency resource of being distributed to adopt the MIMO technology, adopt the technological terminal transmission downlink data of MIMO to current permission; The first transmitting uplink data module when being used at the terminal that the MIMO technology is adopted in current permission, uses the frequency resource of being distributed to adopt MIMO technical transmission upstream data;
This device further comprises:
The second downstream data transport module is used to use the frequency resource of being distributed to adopt the terminal transmission downlink data that does not allow to adopt the MIMO technology to current;
The second transmitting uplink data module is used for currently at the terminal not allowing to adopt MIMO when technology, uses the frequency resource transmit ascending data that is distributed.
Further, this device also comprises: descending second resource distribution module is used to Physical Resource Block on the terminal distribution downstream bands in the descending central area as the downstream frequency resource; And be used to the interior terminal distribution of descending fringe region in advance for the Physical Resource Block in the downstream arrangements frequency sets of this cell allocation, as the downstream frequency resource; Up second resource distribution module is used to Physical Resource Block on the terminal distribution upstream band in the up central area as the upstream frequency resource; And be used to terminal distribution in the ascending edge zone in advance for the Physical Resource Block in the up configuration frequency set of this cell allocation, as the upstream frequency resource.
Further, said descending first resource distribution module comprises: descending second receiver module, descending available resources memory module, downlink resource determination module, sending module; Wherein, descending second receiver module is used to receive the RNTP signaling that this adjacent cells of cells is sent; Descending available resources memory module, being used for received RNTP signaling is that 0 bit corresponding physical Resource Block is formed the usable frequency set, and covers the descending usable frequency set of having stored; The downlink resource determination module is used to judge that the order of the channel of terminal to report indicates whether to be not less than 2, and when being not less than, the descending usable frequency set according to current storage is this terminal distribution downstream frequency resource in judged result; Judged result be less than the time, be the Physical Resource Block in the downstream arrangements frequency sets of this cell allocation in advance for this terminal distribution, as the downstream frequency resource;
Descending sending module is used for when pre-assigned downstream arrangements frequency sets does not comprise the downstream frequency resource of being distributed, and sends the RNTP signaling to this adjacent cells of cells;
Said up first resource distribution module comprises: up receiver module, up available resources memory module, ascending resource determination module, sending module; Wherein,
Up receiver module is used to receive high interference indication HII or the overload indication OI that this adjacent cells of cells is sent;
Up available resources memory module, being used for HII and/or OI is that 0 bit corresponding physical Resource Block is formed up usable frequency set, and covers the up usable frequency set of having stored;
The ascending resource determination module, the order of the channel at the terminal that is used to judge that the base station records indicates whether to be not less than 2, and when being not less than, the up usable frequency set according to current storage is this terminal distribution upstream frequency resource in judged result; Judged result be less than the time, be the Physical Resource Block in the up configuration frequency set of this cell allocation in advance for this terminal distribution, as the upstream frequency resource;
Up sending module is used for when pre-assigned up configuration frequency set does not comprise the upstream frequency resource of being distributed, sending HII to this adjacent cells of cells; And be used for when base station measurement transships to certain or some ascending physical signal Resource Block, sending OI to this adjacent cells of cells.
The present invention all is divided into three parts with microzonation during through downlink data transmission or during transmitting uplink data; And on transmission band the terminal distribution frequency resource that the MIMO technology is adopted in current permission in this sub-district transitional region; And use assigned frequency resource to adopt MIMO technical transmission data to improve data rate, can improve the availability of frequency spectrum of LTE system and guarantee QoS of survice.Concrete, the present invention also has following advantage and characteristics:
1, the present invention is through with existing in the usable frequency set not by this adjacent cells of cells with the Physical Resource Block that higher-wattage takies, and distributes to the MIMO technology is adopted in current permission in this sub-district transitional region terminal as frequency resource, reduced presence of intercell interference;
2, the present invention in the descending transitional region, when current permission adopts the terminal of MIMO technology to get the Physical Resource Block outside the downstream arrangements frequency sets, just coordinates the interference of minizone through RNTP when downlink data transmission; And during transmitting uplink data; In the up transitional region, when current permission adopts the terminal of MIMO technology to get the Physical Resource Block outside the up configuration frequency set; Just coordinate the interference of minizone through HII/OI; This compares with dynamic interference coordination, has significantly reduced the Signalling exchange of minizone, also has substantial degradation with the frequency of present semi-static Inter-Cell Interference Coordination compared with techniques Signalling exchange.
Description of drawings
Fig. 1 is the realization flow sketch map of embodiment of the invention inter-cell interference coordination method;
Fig. 2 realizes the schematic flow sheet of downlink data transmission for adopting inter-cell interference coordination method of the present invention;
Fig. 3 realizes the schematic flow sheet of transmitting uplink data for adopting inter-cell interference coordination method of the present invention;
Fig. 4 realizes the structural representation of the device of Inter-Cell Interference Coordination for the embodiment of the invention;
Fig. 5 realizes the descending first resource distribution module structural representation of Inter-Cell Interference Coordination device for the embodiment of the invention;
Fig. 6 realizes the up first resource distribution module structural representation of Inter-Cell Interference Coordination device for the embodiment of the invention.
Embodiment
The realization flow of embodiment of the invention inter-cell interference coordination method is as shown in Figure 1, may further comprise the steps:
Step 101: each sub-district is divided into central area, transitional region and fringe region according to the channel quality parameter at terminal in this sub-district with this microzonation; Wherein, said channel quality parameter is down channel quality parameter or uplink signal-channel quality parameter; During downlink data transmission, said central area, transitional region and fringe region are descending central area, descending transitional region and descending fringe region; During transmitting uplink data, said central area, transitional region and fringe region are up central area, up transitional region and ascending edge zone.
Step 102: be the terminal distribution frequency resource that the MIMO technology is adopted in current permission in this sub-district transitional region on transmission band, and use assigned frequency resource to adopt MIMO technical transmission data; Wherein, said transmission band is whole frequency bands of LTE system.
Adopt inter-cell interference coordination method of the present invention to realize that the flow process of downlink data transmission is as shown in Figure 2, may further comprise the steps:
Step 201: be respectively each the cell allocation downstream arrangements frequency sets in the LTE system.
Here, the concrete grammar for each cell allocation downstream arrangements frequency sets is:
A. the downstream bands with the LTE system is divided into mutually orthogonal frequency sets;
B. get part bandwidth in each frequency sets of being divided at random respectively as the downstream arrangements frequency sets of each sub-district; The preferential terminal that is positioned at descending fringe region of supplying with of the downstream arrangements frequency sets of sub-district.Wherein, the part bandwidth in frequency sets is formed a downstream arrangements frequency sets, and the downstream arrangements frequency sets of neighbor cell is mutually orthogonal.
Step 202: each sub-district is divided into descending central area, descending transitional region and descending fringe region according to the down channel quality at terminal in this sub-district with this microzonation.
Here, the concrete grammar that this microzonation is divided into descending central area, descending transitional region and descending fringe region is:
According to parameter terminal to report in the sub-district, sign terminal down channel quality parameter, the first descending boundary thresholding of descending central area and descending transitional region is set, and the second descending boundary thresholding of descending transitional region and descending fringe region is set;
The first descending boundary thresholding and the second descending boundary thresholding are distinguished into three zones for a short time with this; Wherein, the sign terminal down channel quality parameter of the terminal to report that the zone is included is higher than the first descending boundary thresholding, should the zone be descending central area then; The sign terminal down channel quality parameter of the terminal to report that the zone is included is lower than the first descending boundary thresholding, and is higher than the second descending boundary thresholding, should the zone be descending transitional region then; The sign terminal down channel quality parameter of the included terminal to report in zone is lower than the second descending boundary thresholding, should the zone be descending fringe region then.
Wherein, the down channel quality parameter at sign terminal comprises: Reference Signal Received Power (RSRP, Reference Signal Received Power) or broad-band channel quality indication (CQI) information etc.; Here, according to the RSRP of terminal to report the said first descending boundary thresholding and the second descending boundary thresholding are set, the first descending boundary thresholding is expressed as RSRP
High, the second descending boundary thresholding is expressed as RSRP
LowThat is: the RSRP according to terminal to report in this sub-district is divided into descending central area, descending transitional region and fringe region with this microzonation, and the RSRP of included terminal to report is higher than RSRP
HighThe zone be descending central area, the RSRP of included terminal to report is lower than RSRP
HighAnd be higher than RSRP
LowThe zone be descending transitional region, the RSRP of included terminal to report is lower than RSRP
LowThe zone be fringe region.
Wherein, RSRP is the power ratio of reference signal of reference signal and the adjacent sub-district of current area; RSRP
HighSpan be (3～6dB), RSRP
LowSpan be (0～3dB); Pre-configured when the descending boundary threshold value is set up in the sub-district, and can when network operation, carry out dynamic change according to the loading condition in the sub-district, for example,, when causing the load of descending central area too big, can pass through to increase RSRP when great amount of terminals is positioned at descending central area
High, be divided to descending transitional region with the part terminal of descending central area is rigid; The descending boundary threshold value of each sub-district can be the same or different.
Step 203: receive the Relative Narrowband TX Power (RNTP that this adjacent cells of cells is sent; Relative Narrowband TX Power) during signaling; The bit corresponding physical Resource Block that in the received RNTP signaling is 0 is formed the usable frequency set, and cover the descending usable frequency set that has stored this sub-district.
Wherein, the RNTP signaling is carried Relative Narrowband TX Power and the magnitude relationship of entrained threshold value of each Physical Resource Block of a threshold value and downstream bands, if greater than entrained threshold value, the bit that then this Physical Resource Block is corresponding is 1; Otherwise the bit that this Physical Resource Block is corresponding is 0.Here; Think to be that 0 bit corresponding physical Resource Block is not taken with higher-wattage by this adjacent cells of cells; Promptly; For the Physical Resource Block that is not taken on the downstream bands, be the current available resource of descending transitional region of this sub-district by the descending transitional region of this adjacent cells of cells and adjacent cell downlink fringe region; Thinking to be that 1 bit corresponding physical Resource Block is taken with higher-wattage by this adjacent cells of cells, is the current disabled resource of descending transitional region of this sub-district.
Step 204: when the terminal transmission data need be given in the base station; Be currently located in the descending central area of this sub-district, descending transitional region or the descending fringe region according to the terminal; Be terminal distribution downstream frequency resource, and use assigned downstream frequency resource to the terminal transmission data.
Concrete distribution, transmission method are:
When steps A 1, base station need be given the terminal transmission data, confirm that the terminal is currently located in the descending central area of this sub-district, descending transitional region or the fringe region, if be positioned at descending central area, execution in step B1 then; If be positioned at descending transitional region, execution in step C1 then; If be positioned at descending fringe region, execution in step D1 then;
Step B1, for the one or more Physical Resource Block on the downstream bands of terminal distribution LTE system as the downstream frequency resource and transmit data, finish this transfer of data flow process.
Whether the order indication (RI, Rank Indication RI) of the channel of step C1, judgement terminal to report is not less than 2, if be not less than, thinks that then the terminal is the terminal that the MIMO technology is adopted in current permission, execution in step C11; If less than, think that then the terminal is the current terminal that does not allow to adopt the MIMO technology, execution in step C12.
Here, when the base station adopt the transmission data need for two or more terminals, this step was: whether the base station confirms through the pairing algorithm that the terminal is current can multiuser MIMO technical transmission data, if can, execution in step C11; Otherwise, execution in step C12.
Step C11, according to the descending usable frequency set of current storage; Be said terminal distribution downstream frequency resource; And use assigned frequency resource to adopt MIMO technical transmission data; And when pre-assigned downstream arrangements frequency sets does not comprise the downstream frequency resource of being distributed, send the RNTP signaling to this adjacent cells of cells;
Here, according to the descending usable frequency set of current storage, for said terminal distribution downstream frequency resource is:
Step a1, according to the size of the descending subband CQI of terminal to report; The Physical Resource Block group that each descending subband of terminal is comprised sorts; Obtain downlink physical Resource Block group sequence; That is, the Physical Resource Block group that the descending subband that CQI information is maximum comprises makes number one, and the Physical Resource Block group that the descending subband that CQI information is minimum comprises comes last position; The Physical Resource Block group that said subband comprises is made up of the Physical Resource Block that subband comprises;
Step b1, get first Physical Resource Block group of said downlink physical Resource Block group sequence;
Whether the common factor of step c1, the definite descending usable frequency set of being stored and the Physical Resource Block group of getting is empty, if be not sky, then execution in step d1; If be sky, then execution in step e1;
Steps d 1, judge whether other terminal of this sub-district takies the whole Physical Resource Block in the said common factor, if, execution in step e1 then; Otherwise, execution in step f1;
Make the different terminals of this sub-district can not use same Physical Resource Block simultaneously through this step, avoid the interference of each terminal room in this sub-district.
Step e1, the Physical Resource Block group of getting said downlink physical Resource Block group sequence next bit; Return step c1; In said downlink physical Resource Block group sequence, there is not the Physical Resource Block group do not got; The descending usable frequency intersection of sets collection that does not find yet and stored is not empty Physical Resource Block group, and then said terminal distribution is the interior Physical Resource Block of downstream arrangements frequency sets of this cell allocation in advance, as the downstream frequency resource.
Step f1, with the Physical Resource Block that is not taken in the said common factor by other terminal of this sub-district distribute to the institute said terminal as the downstream frequency resource.
Among step a1～f1; With having the Physical Resource Block that is not taken with higher-wattage in the descending usable frequency set by this adjacent cells of cells; Distribute to the terminal that the MIMO technology is adopted in current permission in this cell downlink transitional region; Make the technological terminal of the current MIMO of employing of descending transitional region of two neighbor cells not use the terminal of same Physical Resource Block, the current MIMO of the employing technology of up transitional region also not use same Physical Resource Block simultaneously simultaneously, reduced presence of intercell interference.
Step C12, be that said terminal distribution is the Physical Resource Block in the downstream arrangements frequency sets of this cell allocation in advance, as the downstream frequency resource and transmit data, finish this transfer of data flow process.
Step D1, base station are that the one or more Physical Resource Block in the cell downlink configuration frequency set finish this transfer of data flow process as the downstream frequency resource and transmit data under this base station of terminal distribution.
In the embodiment of the invention,, can use the downstream frequency resource to adopt the MIMO technology to the terminal transmission data if the MIMO technology is adopted in the current permission in terminal; Do not allow to adopt MIMO technological if the terminal is current, can use the downstream frequency resource to adopt technology such as single antenna, transmit diversity or beam shaping to the terminal transmission data.
Adopt inter-cell interference coordination method of the present invention to realize that the flow process of transmitting uplink data is as shown in Figure 3, may further comprise the steps:
Step 301: be respectively the up configuration frequency set of each cell allocation in the LTE system.
Here, the concrete grammar for the up configuration frequency set of each cell allocation is:
A, the upstream band of LTE system is divided into mutually orthogonal frequency sets;
B, the part bandwidth of getting in each frequency sets of being divided are at random gathered as the up configuration frequency of each sub-district respectively; The preferential terminal that is positioned at the ascending edge zone of supplying with of up configuration frequency set of sub-district.Wherein, the part bandwidth in frequency sets is formed a up configuration frequency set, and the up configuration frequency set of neighbor cell is mutually orthogonal.
Step 302: each sub-district is divided into up central area, up transitional region and ascending edge zone according to the uplink signal-channel quality at terminal in this sub-district with this microzonation.
Here, this microzonation being divided into the regional concrete grammar of up central area, up transitional region and ascending edge is:
According to the uplink signal-channel quality parameter at the terminal of base station measurement, be provided with up central area and up transitional region first on the row bound thresholding, and be provided with up transitional region and ascending edge zone second on the row bound thresholding;
On first on the row bound thresholding and second the row bound thresholding this will be distinguished into three zones for a short time; Wherein, the uplink signal-channel quality parameter at the terminal that the zone is included is higher than row bound thresholding on first, should the zone be up central area then; The uplink signal-channel quality parameter at the terminal that the zone is included is lower than row bound thresholding on first, and is higher than row bound thresholding on second, should the zone be up transitional region then; The uplink signal-channel quality parameter at included terminal, zone is lower than row bound thresholding on second, should the zone be the ascending edge zone then.
Wherein, the uplink signal-channel quality parameter at sign terminal comprises: RSRP or Signal to Interference plus Noise Ratio (SINR) etc.; Here, the SINR that records according to the base station is provided with on first row bound thresholding on the row bound thresholding and second, and the last row bound thresholding of up central area and up transitional region is expressed as SINR
High, the last row bound thresholding of up transitional region and fringe region is expressed as SINR
LowThat is: according to the SINR that records this microzonation is divided into up central area, up transitional region and fringe region, SINR is higher than SINR
HighThe zone be up central area, SINR is lower than SINR
HighAnd be higher than SINR
LowThe zone be up transitional region, SINR is lower than SINR
LowThe zone be fringe region.
Wherein, SINR
HighSpan be (3～6dB), SINR
LowSpan be (0～3dB); Pre-configured when up boundary threshold is set up in the sub-district, and can when network operation, carry out dynamic change according to the loading condition in the sub-district, for example,, when causing the load of up central area too big, can pass through to increase SINR when great amount of terminals is positioned at up central area
HighDwindle up central area, and then be divided to up transitional region with the part terminal of up central area is rigid; The up boundary threshold of each sub-district can be the same or different.
Step 303: after receiving the high interference indication (HII) and/or overload indication (OI) of this adjacent cells of cells transmission; The bit corresponding physical Resource Block Physical Resource Block that among HII and/or the OI is 0 is formed up usable frequency set, and cover the up usable frequency set that has stored this sub-district.
Wherein, HII carries the disturbed condition of each Physical Resource Block of upstream band, is that high interference possibly appear in its corresponding physical Resource Block of bit indication of 1; OI carries the situation that takies of each Physical Resource Block of upstream band, is that overload has appearred in its corresponding physical Resource Block of bit indication of 1.
Here, if receive for HII or OI, the bit corresponding physical Resource Block Physical Resource Block that among HII or the OI is 0 is combined into up usable frequency set; If receive for HII and OI, will be in HII and OI institute's corresponding bit be 0 Physical Resource Block and be combined into usable frequency and gather.
Step 304: when the base station transmits data are given at the terminal, terminal request base station assigns upstream frequency resource; The base station is positioned at the up central area of this sub-district, up transitional region or ascending edge zone according to the terminal, is terminal distribution upstream frequency resource; The terminal uses assigned upstream frequency resource to the base station transmits data.
Concrete distribution, transmission method are:
When steps A 2, terminal are given the base station transmits data, terminal request base station assigns upstream frequency resource; The present position, terminal is confirmed in the up central area of this sub-district, up transitional region or fringe region in the base station, if in up central area, and execution in step B2 then; If in up transitional region, execution in step C2 then; If at ascending edge zone, then execution in step D2;
Step B2, be that one or more Physical Resource Block on the upstream band of terminal distribution LTE system are as the upstream frequency resource; The terminal uses the upstream frequency resource that is assigned to the base station transmits data, finishes this transfer of data flow process.
Step C2, judge whether the RI of the channel at the terminal that the base station records is not less than 2,, think that then the terminal is the terminal that the MIMO technology is adopted in current permission, execution in step C21 if be not less than; If less than, think that then the terminal is the current terminal that does not allow to adopt the MIMO technology, execution in step C22.
Step C21, according to the up usable frequency set of current storage; Be said terminal distribution upstream frequency resource, the terminal uses assigned frequency resource to adopt the MIMO technology to the base station transmits data, and when pre-assigned up configuration frequency set does not comprise the upstream frequency resource of being distributed; Send HII to this adjacent cells of cells; When base station measurement transships to certain or some ascending physical signal Resource Block, send OI to this adjacent cells of cells, finish this transfer of data flow process;
Here, according to the up usable frequency set of current storage, for said terminal distribution downstream frequency resource is:
The size of the up arrowband CQI information at step a2, the terminal that records according to the base station; The Physical Resource Block group that each up subband of terminal is comprised sorts; Obtain ascending physical signal Resource Block group sequence; That is, the Physical Resource Block group that the up subband that CQI information is maximum comprises makes number one, and the Physical Resource Block group that the up subband that CQI information is minimum comprises comes last position;
Step b2, get first Physical Resource Block group of said ascending physical signal Resource Block group sequence;
Whether the common factor of step c2, the definite up usable frequency set of being stored and the Physical Resource Block group of getting is empty, if be not sky, then execution in step d2; If be sky, then execution in step e2;
Steps d 2, judge whether other terminal of this sub-district takies the whole Physical Resource Block in the said common factor, if, execution in step e2 then; Otherwise, execution in step f2;
Make the different terminals of this sub-district can not use same Physical Resource Block simultaneously through this step, avoid the interference of each terminal room in this sub-district.
Step e2, the Physical Resource Block group of getting said ascending physical signal Resource Block group sequence next bit; Return step c2; In said ascending physical signal Resource Block group sequence, there is not the Physical Resource Block group do not got; The up usable frequency intersection of sets collection that does not find yet and stored is not empty Physical Resource Block group, then is that said terminal distribution is in advance for the Physical Resource Block in the up configuration frequency set of this cell allocation, as the upstream frequency resource.
Said terminal is distributed to as the upstream frequency resource with the Physical Resource Block that is not taken by other terminal of this sub-district in the said common factor in step f2, base station.
Among step a2～f2; With having the Physical Resource Block that is not taken with higher-wattage in the up usable frequency set by this adjacent cells of cells; Distribute to the terminal that the MIMO technology is adopted in current permission in this cell uplink transitional region; Make the technological terminal of the current MIMO of employing of up transitional region of two neighbor cells not use the terminal of same Physical Resource Block, the current MIMO of the employing technology of up transitional region also not use same Physical Resource Block simultaneously simultaneously, reduced presence of intercell interference.
Step C22, be that said terminal distribution is in advance for the Physical Resource Block in the up configuration frequency set of this cell allocation, as the upstream frequency resource; The upstream frequency resource transmission data that are assigned to are used at the terminal, finish this transfer of data flow process.
Step D2, be under this base station of terminal distribution the one or more Physical Resource Block in the cell uplink configuration frequency set as the upstream frequency resource; The terminal uses the upstream frequency resource that is assigned to the base station transmits data, finishes this transfer of data flow process.
In the embodiment of the invention,, can use the upstream frequency resource to adopt the MIMO technology to the base station transmits data if the MIMO technology is adopted in the current permission in terminal; Do not allow to adopt MIMO technological if the terminal is current, can use the upstream frequency resource to adopt technology such as single antenna or transmit diversity to the base station transmits data.
For realizing said method, the invention provides a kind of device of realizing Inter-Cell Interference Coordination, the structure of this device is as shown in Figure 4, comprising: parameter acquisition module, division module, first resource distribution module, data transmission module; Wherein,
Parameter acquisition module is used to receive the channel quality parameter of terminal to report in this sub-district; Be used to measure the channel quality parameter at terminal in this sub-district;
Divide module, be used for this microzonation being divided into central area, transitional region and fringe region according to channel quality parameter that receive or that measure;
First resource distribution module is used on transmission band, adopting the terminal distribution frequency resource of MIMO technology for current permission in this sub-district transitional region;
Data transmission module is used to use the frequency resource of being distributed to adopt MIMO technical transmission data.
Wherein, said parameter acquiring comprises, descending first receiver module and out-hole run module; Wherein,
Descending first receiver module is used to receive the down channel quality parameter of terminal to report in this sub-district;
The out-hole run module is used to measure the uplink signal-channel quality parameter at terminal in this sub-district;
Said division module comprises: descending division module, up division module; Wherein,
Descending division module is used for according to said down channel quality parameter this microzonation being divided into descending central area, descending transitional region and descending fringe region;
Up division module is used for according to said uplink signal-channel quality parameter this microzonation being divided into up central area, up transitional region and ascending edge zone;
Said first resource distribution module comprises: descending first resource distribution module, up first resource distribution module; Wherein,
Descending first resource distribution module, be used on downstream bands in this cell downlink transitional region, current permission adopts the terminal distribution downstream frequency resource of MIMO technology; And be used to interior, the current terminal distribution that cannot adopt the MIMO technology of this cell downlink transitional region in advance for the Physical Resource Block in the downstream arrangements frequency sets of this cell allocation, as the downstream frequency resource;
Up first resource distribution module, be used on upstream band in this cell uplink transitional region, current permission adopts the terminal distribution upstream frequency resource of MIMO technology; And be used to interior, the current terminal distribution that cannot adopt the MIMO technology of this cell uplink transitional region in advance for the Physical Resource Block in the up configuration frequency set of this cell allocation, as the upstream frequency resource;
Said data transmission module comprises: downlink data transmission module, transmitting uplink data module; Wherein,
The first downstream data transport module is used to use the frequency resource of being distributed to adopt the MIMO technology, adopt the technological terminal transmission downlink data of MIMO to current permission;
The first transmitting uplink data module when being used at the terminal that the MIMO technology is adopted in current permission, uses the frequency resource of being distributed to adopt MIMO technical transmission upstream data.
This device further comprises:
The second downstream data transport module is used to use the frequency resource of being distributed to adopt the terminal transmission downlink data that does not allow to adopt the MIMO technology to current;
The second transmitting uplink data module is used for currently at the terminal not allowing to adopt MIMO when technology, uses the frequency resource transmit ascending data that is distributed.
This device also comprises:
Descending second resource distribution module is used to Physical Resource Block on the terminal distribution downstream bands in the descending central area as the downstream frequency resource; And be used to the interior terminal distribution of descending fringe region in advance for the Physical Resource Block in the downstream arrangements frequency sets of this cell allocation, as the downstream frequency resource;
Up second resource distribution module is used to Physical Resource Block on the terminal distribution upstream band in the up central area as the upstream frequency resource; And be used to terminal distribution in the ascending edge zone in advance for the Physical Resource Block in the up configuration frequency set of this cell allocation, as the upstream frequency resource.
Wherein, as shown in Figure 5, said descending first resource distribution module comprises: descending second receiver module, descending available resources memory module, downlink resource determination module, sending module; Wherein,
Descending second receiver module is used to receive the RNTP signaling that this adjacent cells of cells is sent;
Descending available resources memory module, being used for received RNTP signaling is that 0 bit corresponding physical Resource Block is formed the usable frequency set, and covers the descending usable frequency set of having stored;
The downlink resource determination module is used to judge whether the RI of the channel of terminal to report is not less than 2, and when being not less than, the descending usable frequency set according to current storage is this terminal distribution downstream frequency resource in judged result; Judged result be less than the time, be the Physical Resource Block in the downstream arrangements frequency sets of this cell allocation in advance for this terminal distribution, as the downstream frequency resource;
Descending sending module is used for when pre-assigned downstream arrangements frequency sets does not comprise the downstream frequency resource of being distributed, and sends the RNTP signaling to this adjacent cells of cells;
As shown in Figure 6, said up first resource distribution module comprises: up receiver module, up available resources memory module, ascending resource determination module, sending module; Wherein,
Up receiver module is used to receive high interference indication HII or the overload indication OI that this adjacent cells of cells is sent;
Up available resources memory module, being used for HII and/or OI is that 0 bit corresponding physical Resource Block Physical Resource Block is formed up usable frequency set, and covers the up usable frequency set of having stored;
The ascending resource determination module, whether the RI of the channel at the terminal that is used to judge that the base station records is not less than 2, and when being not less than, the up usable frequency set according to current storage is this terminal distribution upstream frequency resource in judged result; Judged result be less than the time, be the Physical Resource Block in the up configuration frequency set of this cell allocation in advance for this terminal distribution, as the upstream frequency resource;
Up sending module is used for when pre-assigned up configuration frequency set does not comprise the upstream frequency resource of being distributed, sending HII to this adjacent cells of cells; And be used for when base station measurement transships to certain or some ascending physical signal Resource Block, sending OI to this adjacent cells of cells.
The above is merely preferred embodiment of the present invention, is not to be used to limit protection scope of the present invention.
Claims (11)
1. an inter-cell interference coordination method is characterized in that, this method comprises:
Each sub-district is divided into central area, transitional region and fringe region according to the channel quality parameter at terminal in this sub-district with this microzonation;
Be the terminal distribution frequency resource that multiple-input and multiple-output MIMO technology is adopted in current permission in this sub-district transitional region on transmission band, and use assigned frequency resource to adopt MIMO technical transmission data;
Said channel quality parameter is down channel quality parameter or uplink signal-channel quality parameter; Accordingly, said each sub-district is divided into central area, transitional region and fringe region according to the channel quality parameter at terminal in this sub-district with this microzonation and is: each sub-district is divided into descending central area, descending transitional region and descending fringe region according to the down channel quality parameter at terminal in this sub-district with this microzonation; Perhaps, each sub-district is divided into up central area, up transitional region and ascending edge zone according to the uplink signal-channel quality parameter at terminal in this sub-district with this microzonation.
2. according to the said inter-cell interference coordination method of claim 1, it is characterized in that,
Said is that current permission adopts the terminal distribution frequency resource of MIMO technology to be in this sub-district transitional region on transmission band:
It on downstream bands the terminal distribution downstream frequency resource that the MIMO technology is adopted in current permission in this cell downlink transitional region; Perhaps,
It on upstream band the terminal distribution upstream frequency resource that the MIMO technology is adopted in current permission in this cell uplink transitional region.
3. according to the said inter-cell interference coordination method of claim 2, it is characterized in that this method further comprises:
For the Physical Resource Block on the terminal distribution downstream bands in the descending central area as the downstream frequency resource; Be the Physical Resource Block in the downstream arrangements frequency sets of this cell allocation in advance for the terminal distribution in the descending fringe region, as the downstream frequency resource;
For the Physical Resource Block on the terminal distribution upstream band in the up central area as the upstream frequency resource; For the terminal distribution in the ascending edge zone is the interior Physical Resource Block of up configuration frequency set of this cell allocation in advance, as the upstream frequency resource.
4. according to claim 2 or 3 said inter-cell interference coordination methods, it is characterized in that said is that current permission adopts the terminal distribution downstream frequency resource of MIMO technology to comprise in this cell downlink transitional region on downstream bands:
When the base station receives the Relative Narrowband TX Power RNTP signaling of this adjacent cells of cells transmission, the bit corresponding physical Resource Block that in the received RNTP signaling is 0 is formed the usable frequency set, and cover the descending usable frequency set of having stored;
The order of judging the channel of terminal to report indicates whether to be not less than 2; If be not less than; Descending usable frequency set according to current storage; Be this terminal distribution downstream frequency resource, and when pre-assigned downstream arrangements frequency sets does not comprise the downstream frequency resource of being distributed, send the RNTP signaling to this adjacent cells of cells; If less than, be the Physical Resource Block in the downstream arrangements frequency sets of this cell allocation in advance for this terminal distribution, as the downstream frequency resource.
5. according to the said inter-cell interference coordination method of claim 4, it is characterized in that, said descending usable frequency set according to current storage, for this terminal distribution downstream frequency resource is:
Steps A 1, according to the size of the descending sub-band channel quality indication CQI of terminal to report, the Physical Resource Block group ordering with each descending subband of this terminal comprises obtains downlink physical Resource Block group sequence;
Step B1, get first Physical Resource Block group of said downlink physical Resource Block group sequence;
Whether the common factor of step C1, the definite descending usable frequency set of being stored and the Physical Resource Block group of getting is empty, if be not sky, then execution in step D1; If be sky, then execution in step E1;
Whether other terminal of step D1, this sub-district of base station judges takies the whole Physical Resource Block in the said common factor, if, execution in step E1 then; Otherwise, execution in step F1;
Step e 1, the Physical Resource Block group of getting said downlink physical Resource Block group sequence next bit; Return step C1; In said downlink physical Resource Block group sequence, there is not the Physical Resource Block group do not got; The descending usable frequency intersection of sets collection that does not find yet and stored is not empty Physical Resource Block group, then is that said terminal distribution is in advance for the Physical Resource Block in the downstream arrangements frequency sets of this cell allocation, as the downstream frequency resource;
Said terminal is distributed to as the downstream frequency resource with the Physical Resource Block that is not taken by other terminal of this sub-district in the said common factor in step F 1, base station.
6. according to claim 2 or 3 said inter-cell interference coordination methods, it is characterized in that said is that current permission adopts the terminal distribution upstream frequency resource of MIMO technology to comprise in this cell uplink transitional region on upstream band:
The base station is formed up usable frequency set with the bit corresponding physical Resource Block that among HII and/or the OI is 0, and is covered the up usable frequency set of having stored after receiving the high interference indication HII and/or overload indication OI that this adjacent cells of cells sends;
The order of judging the channel at the terminal that the base station records indicates whether to be not less than 2; If be not less than, the up usable frequency set according to current storage is this terminal distribution upstream frequency resource; And when pre-assigned up configuration frequency set does not comprise the upstream frequency resource of being distributed; Send HII to this adjacent cells of cells, when base station measurement transships to certain or some ascending physical signal Resource Block, send OI to this adjacent cells of cells; If less than, for this terminal distribution is the interior Physical Resource Block of up configuration frequency set of this cell allocation in advance, as the upstream frequency resource.
7. according to the said inter-cell interference coordination method of claim 6, it is characterized in that, said up usable frequency set according to current storage, for this terminal distribution upstream frequency resource is:
The size of steps A 2, each up subband CQI of terminal of recording according to the base station, the Physical Resource Block group ordering with each up subband of this terminal comprises obtains ascending physical signal Resource Block group sequence;
Step B2, get first Physical Resource Block group of said ascending physical signal Resource Block group sequence;
Whether the common factor of step C2, the definite up usable frequency set of being stored and the Physical Resource Block group of getting is empty, if be not sky, then execution in step D2; If be sky, then execution in step E2;
Whether other terminal of step D2, this sub-district of base station judges takies the whole Physical Resource Block in the said common factor, if, execution in step E2 then; Otherwise, execution in step F2;
Step e 2, the Physical Resource Block group of getting said ascending physical signal Resource Block group sequence next bit; Return step C2; In said ascending physical signal Resource Block group sequence, there is not the Physical Resource Block group do not got; The up usable frequency intersection of sets collection that does not find yet and stored is not empty Physical Resource Block group, then is that said terminal distribution is in advance for the Physical Resource Block in the up configuration frequency set of this cell allocation, as the upstream frequency resource;
Said terminal is distributed to as the upstream frequency resource with the Physical Resource Block that is not taken by other terminal of this sub-district in the said common factor in step F 2, base station.
8. a device of realizing Inter-Cell Interference Coordination is characterized in that, this device comprises: parameter acquisition module, division module, first resource distribution module, data transmission module; Wherein,
Parameter acquisition module is used to receive the channel quality parameter of terminal to report in this sub-district; Be used to measure the channel quality parameter at terminal in this sub-district;
Divide module, be used for this microzonation being divided into central area, transitional region and fringe region according to channel quality parameter that receive or that measure;
First resource distribution module is used on transmission band, adopting the terminal distribution frequency resource of MIMO technology for current permission in this sub-district transitional region;
Data transmission module is used to use the frequency resource of being distributed to adopt MIMO technical transmission data;
Said parameter acquisition module comprises, descending first receiver module and out-hole run module; Wherein, descending first receiver module is used to receive the down channel quality parameter of terminal to report in this sub-district; The out-hole run module is used to measure the uplink signal-channel quality parameter at terminal in this sub-district;
Said division module comprises: descending division module, up division module; Wherein, descending division module is used for according to said down channel quality parameter this microzonation being divided into descending central area, descending transitional region and descending fringe region; Up division module is used for according to said uplink signal-channel quality parameter this microzonation being divided into up central area, up transitional region and ascending edge zone.
9. the device of said according to Claim 8 realization Inter-Cell Interference Coordination is characterized in that,
Said first resource distribution module comprises: descending first resource distribution module, up first resource distribution module; Wherein,
Descending first resource distribution module, be used on downstream bands in this cell downlink transitional region, current permission adopts the terminal distribution downstream frequency resource of MIMO technology; And be used to interior, the current terminal distribution that cannot adopt the MIMO technology of this cell downlink transitional region in advance for the Physical Resource Block in the downstream arrangements frequency sets of this cell allocation, as the downstream frequency resource;
Up first resource distribution module, be used on upstream band in this cell uplink transitional region, current permission adopts the terminal distribution upstream frequency resource of MIMO technology; And be used to interior, the current terminal distribution that does not allow to adopt the MIMO technology of this cell uplink transitional region in advance for the Physical Resource Block in the up configuration frequency set of this cell allocation, as the upstream frequency resource;
Said data transmission module comprises: first downstream data transport module, the first transmitting uplink data module; Wherein,
The first downstream data transport module is used to use the frequency resource of being distributed to adopt the MIMO technology, adopt the technological terminal transmission downlink data of MIMO to current permission;
The first transmitting uplink data module when being used at the terminal that the MIMO technology is adopted in current permission, uses the frequency resource of being distributed to adopt MIMO technical transmission upstream data;
This device further comprises:
The second downstream data transport module is used to use the frequency resource of being distributed to adopt the terminal transmission downlink data that does not allow to adopt the MIMO technology to current;
The second transmitting uplink data module is used for currently at the terminal not allowing to adopt MIMO when technology, uses the frequency resource transmit ascending data that is distributed.
10. according to the device of the said realization Inter-Cell Interference Coordination of claim 9, it is characterized in that this device also comprises:
Descending second resource distribution module is used to Physical Resource Block on the terminal distribution downstream bands in the descending central area as the downstream frequency resource; And be used to the interior terminal distribution of descending fringe region in advance for the Physical Resource Block in the downstream arrangements frequency sets of this cell allocation, as the downstream frequency resource;
Up second resource distribution module is used to Physical Resource Block on the terminal distribution upstream band in the up central area as the upstream frequency resource; And be used to terminal distribution in the ascending edge zone in advance for the Physical Resource Block in the up configuration frequency set of this cell allocation, as the upstream frequency resource.
11. the device according to claim 9 or 10 said realization Inter-Cell Interference Coordination is characterized in that, said descending first resource distribution module comprises: descending second receiver module, descending available resources memory module, downlink resource determination module, sending module; Wherein,
Descending second receiver module is used to receive the RNTP signaling that this adjacent cells of cells is sent;
Descending available resources memory module, being used for received RNTP signaling is that 0 bit corresponding physical Resource Block is formed the usable frequency set, and covers the descending usable frequency set of having stored;
The downlink resource determination module is used to judge that the order of the channel of terminal to report indicates whether to be not less than 2, and when being not less than, the descending usable frequency set according to current storage is this terminal distribution downstream frequency resource in judged result; Judged result be less than the time, be the Physical Resource Block in the downstream arrangements frequency sets of this cell allocation in advance for this terminal distribution, as the downstream frequency resource;
Descending sending module is used for when pre-assigned downstream arrangements frequency sets does not comprise the downstream frequency resource of being distributed, and sends the RNTP signaling to this adjacent cells of cells;
Said up first resource distribution module comprises: up receiver module, up available resources memory module, ascending resource determination module, sending module; Wherein,
Up receiver module is used to receive high interference indication HII or the overload indication OI that this adjacent cells of cells is sent;
Up available resources memory module, being used for HII and/or OI is that 0 bit corresponding physical Resource Block is formed up usable frequency set, and covers the up usable frequency set of having stored;
The ascending resource determination module, the order of the channel at the terminal that is used to judge that the base station records indicates whether to be not less than 2, and when being not less than, the up usable frequency set according to current storage is this terminal distribution upstream frequency resource in judged result; Judged result be less than the time, be the Physical Resource Block in the up configuration frequency set of this cell allocation in advance for this terminal distribution, as the upstream frequency resource;
Up sending module is used for when pre-assigned up configuration frequency set does not comprise the upstream frequency resource of being distributed, sending HII to this adjacent cells of cells; And be used for when base station measurement transships to certain or some ascending physical signal Resource Block, sending OI to this adjacent cells of cells.
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| CN102802264B (en) * | 2011-05-26 | 2017-02-08 | 中兴通讯股份有限公司 | Fractional frequency reuse type resource allocating method and device |
| CN102811458B (en) * | 2011-06-01 | 2017-04-12 | 中兴通讯股份有限公司 | Inter-cell interference coordination method and base station |
| WO2013056445A1 (en) * | 2011-10-20 | 2013-04-25 | Renesas Mobile Corporation | A method, an apparatus and a computer program product for flexible tdd configuration |
| US9048982B2 (en) | 2012-08-02 | 2015-06-02 | Empire Technology Development Llc | Method for distributed interference coordination in a femtocell environment |
| CN103716799B (en) * | 2012-09-29 | 2017-12-05 | 华为技术有限公司 | Method, equipment and the system of frequency spectrum division |
| EP2723133A1 (en) * | 2012-10-18 | 2014-04-23 | NTT DoCoMo, Inc. | Method for controlling operation within a cell of a wireless cellular network, base station and wireless cellular network |
| CN104185286B (en) * | 2014-08-14 | 2017-11-14 | 京信通信系统（中国）有限公司 | LTE system downlink interference collaboration method, system and LTE base station |
| CN104202807B (en) * | 2014-08-26 | 2018-05-15 | 京信通信系统（中国）有限公司 | Ascending power control method and system |
| US10462792B2 (en) * | 2015-05-29 | 2019-10-29 | Apple Inc. | Determining a location of a UE within a coverage area |
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