CN102378259A - Uplink interference control device based on load balance and method thereof - Google Patents

Abstract

The invention provides an uplink interference control device based on load balance and a method thereof. The method comprises the following steps: according to load information of a partial or whole cell in a cell group, a cell adjusts emission power of a terminal in the cell. The device comprises an adjusting module used for adjusting the emission power of the terminal in the cell according to the load information of the partial or whole cell in the cell group. By employing a technical scheme of the present invention, a problem of being incapable of utilizing uplink wireless bandwidth reasonably and efficiently in the prior art is solved.

Description

A kind of uplink interference control device and method based on load balancing

Technical field

The present invention relates to wireless communication technology field, relate in particular to a kind of uplink interference control device and method based on load balancing.

Background technology

In the wireless communication system; The base station is to show the equipment that the terminal provides service, and the base station communicates through uplink downlink and terminal, wherein; Down link (being also referred to as forward link) is meant the direction of base station to the terminal, and up link (being also referred to as reverse link) is meant the direction of terminal to base station.A plurality of terminals can be sent data through up link to the base station simultaneously, also can receive data simultaneously from the base station through down link.

Inter-cell uplink interference is an intrinsic problem of cell mobile communication systems, seriously affects the capacity of system, and it forms reason is to use the terminal meeting phase mutual interference of same frequency resources in each sub-district.Fig. 1 is the disturbed condition of up link.BS1 and BS2 are respectively the serving BS of MS1 and MS2, suppose that BS1 distributes to the sub-carrier set that MS1 is used for uplink and is combined into SC1, and BS2 distributes to the sub-carrier set that MS is used for uplink and is combined into SC2, and the common factor of SC1 and SC2 is SC.If SC is not an empty set, then BS2 is when receiving the upward signal of MS2 transmission, and the subcarrier in S set C will be received the wireless signal that MS1 sends simultaneously.For MS2 and BS2, these signals from MS1 disturb exactly.If the distance between MS1 and the MS2 very little (supposing that MS1 and MS2 are in the lap of two Serving cell overlay areas); The interference of minizone will be very strong; May cause BS2 correct Solution to access the upward signal that MS2 sends, and then cause the system service performance decrease.

In the real system; An inherent time period of different districts, interior uplink load situation was different; (use interference-to-noise ratio usually if merely pursue the whole network uplink interference level according to traditional approach; Interference over Noise) consistent obtains the maximization of whole system uplink throughput in theory and do not consider the uplink load situation of each sub-district, can cause system rationally not utilize wireless bandwidth efficiently and causes the decline of actual uplink throughput, and then influence the experience at terminal.For example; Supposing the system is made up of two sub-district Cell-1 and Cell-2; Wherein Cell-1 has a plurality of terminals to send upstream data; Cell-2 has no the terminal to send upstream data, and then the uplink interference that records of Cell-2 is far longer than Cell-1, adopts the interference control method of traditional approach may require the terminal under the Cell-1 to be reduced in the transmitting power (being power spectral density) on the subcarrier of distributing to it; Or limited promoting terminal under the Cell-1 in the transmitting power of distributing on its subcarrier, this depends on the uplink interference level desired value of the whole system that traditional approach is provided with.In this example, best mode is that terminal under the Cell-1 can be used the maximum transmission power of oneself to send upstream data and need do not considered to have no the uplink interference situation of the Cell-2 at uplink service terminal.Therefore, be necessary very much the loading condition of each sub-district a Consideration as the system uplink interference control method.

Summary of the invention

The technical problem that the present invention will solve provides a kind of uplink interference control device and method based on load balancing, in order to solve the problem that can not rationally utilize the up-link wireless bandwidth in the prior art efficiently.

A kind of uplink interference control method based on load balancing comprises:

The sub-district is according to the transmitting power at terminal under this sub-district of load information adjustment of part or all of sub-district in the cell set of place.

Further; The adjustment control unit goes out the average uplink interference level of said cell set according to the following information calculations of all or part of sub-district in the cell set: uplink load information or uplink load information and uplink interference level information; Disturb level value that the adjustment information of adjustment terminal transmit power is set according to said average uplink interference level and target afterwards, the sub-district is according to the transmitting power at said adjustment information adjustment terminal afterwards.

Further, said adjustment control unit is according to the average uplink interference level of following method calculation plot group:

${\mathrm{IoT}}_{\mathrm{avg}}=\mathrm{\α}1*\left(\underset{i=1}{\overset{N}{\mathrm{\Σ}}}\frac{{\mathrm{\γ}}_i*{\mathrm{IoT}}_i}{\underset{i=1}{\overset{N}{\mathrm{\Σ}}}{\mathrm{\γ}}_i{\mathrm{IoT}}_i}{\mathrm{IoT}}_i\right)+\mathrm{\β}1*\left(\underset{i=1}{\overset{N}{\mathrm{\Σ}}}\frac{{\mathrm{\μ}}_i*{\mathrm{load}}_i}{\underset{i=1}{\overset{N}{\mathrm{\Σ}}}{\mathrm{\μ}}_i{\mathrm{load}}_i}{\mathrm{load}}_i\right)$

Said IoT _iBe the uplink interference level information of cell i, load _iBe the uplink load information of cell i, α 1 is the real number more than or equal to 0, and β 1 is the real number greater than 0, and α 1 is 1 with β 1 sum, γ _iThe IoT of expression cell i _iShared proportion, μ _iThe load of expression cell i _iShared proportion, said γ _iWith μ _iValue be real number greater than 0.

Further, the said adjustment control unit adjustment information of disturbing level value that the adjustment terminal transmit power is set according to said average uplink interference level and target is meant:

When average uplink interference level is disturbed level value less than target, current adjustment information K is increased step delta, when average uplink interference level is disturbed level value greater than target, current adjustment information K is reduced step delta.

Further, said adjustment control unit is positioned at access service network, sub-district, connection service network or relay station.

Further, said sub-district any adjustment

in such a way

(a) $P_{\mathrm{Tx}}^{\mathrm{UL}}=K+L^{\mathrm{UL}}+{\mathrm{SINR}}^{\mathrm{DL},m};$

(b) first basis

Calculate SINR _Opt, basis again

Calculate said

Further, said sub-district is adjusted the transmitting power at terminal in such a way:

$P_{\mathrm{Tx}}^{\mathrm{UL}}=\mathrm{\α}2*L+\mathrm{\β}2*{\mathrm{IoT}}_{t\arg \mathrm{et}}+\mathrm{\μ}1*{\mathrm{load}}_{\mathrm{cell}-1}+\mathrm{\μm}*{\mathrm{load}}_{\mathrm{cell}-m};$

Said L be said in to the decline information of other base stations, load _Cell-mBe the load of the maximum sub-district of load, α 2, β 2 values are the real number more than or equal to 0, and μ m is non-0 real number, and μ 1 is a real number.

The present invention also provides a kind of uplink interference control device based on load balancing, comprises adjusting module;

Said adjusting module, be used for according to sub-district place cell set partly or entirely the load information of sub-district adjust the transmitting power at terminal under the said sub-district.

Further; Said device also comprises the adjustment control unit; Be used for going out the average uplink interference level of said cell set: (a) uplink load information, or (b) uplink load information and uplink interference level information according to the following information calculations of all or part of sub-district of cell set;

Said adjustment control unit also is used for disturbing level value that the adjustment information of adjusting terminal transmit power is set according to said average uplink interference level and target, and said adjustment information is sent to adjusting module;

Said adjusting module is according to the transmitting power at said adjustment information adjustment terminal.

Further, said adjustment control unit is according to the average uplink interference level of following method calculation plot group:

${\mathrm{IoT}}_{\mathrm{avg}}=\mathrm{\α}1*\left(\underset{i=1}{\overset{N}{\mathrm{\Σ}}}\frac{{\mathrm{\γ}}_i*{\mathrm{IoT}}_i}{\underset{i=1}{\overset{N}{\mathrm{\Σ}}}{\mathrm{\γ}}_i{\mathrm{IoT}}_i}{\mathrm{IoT}}_i\right)+\mathrm{\β}1*\left(\underset{i=1}{\overset{N}{\mathrm{\Σ}}}\frac{{\mathrm{\μ}}_i*{\mathrm{load}}_i}{\underset{i=1}{\overset{N}{\mathrm{\Σ}}}{\mathrm{\μ}}_i{\mathrm{load}}_i}{\mathrm{load}}_i\right)$

Said IoT _iBe the uplink interference level information of cell i, load _iBe the uplink load information of cell i, α 1 is the real number more than or equal to 0, and β 1 is the real number greater than 0, and α 1 is 1 with β 1 sum, γ _iThe IoT of expression cell i _iShared proportion, μ _iThe load of expression cell i _iShared proportion, said γ _iWith μ _iValue be real number greater than 0.

Further, the said adjustment control unit adjustment information of disturbing level value that the adjustment terminal transmit power is set according to said average uplink interference level and target is meant:

When average uplink interference level is disturbed level value less than target, current adjustment information K is increased step delta, when average uplink interference level is disturbed level value greater than target, current adjustment information K is reduced step delta.

Further, said adjusting module any adjustment

in such a way

(a) $P_{\mathrm{Tx}}^{\mathrm{UL}}=K+L^{\mathrm{UL}}+{\mathrm{SINR}}^{\mathrm{DL},m};$

(b) first basis

Calculate SINR _Opt, basis again

Calculate said

Said adjusting module is adjusted the transmitting power at terminal in such a way:

$P_{\mathrm{Tx}}^{\mathrm{UL}}=\mathrm{\α}2*L+\mathrm{\β}2*{\mathrm{IoT}}_{t\arg \mathrm{et}}+\mathrm{\μ}1*{\mathrm{load}}_{\mathrm{cell}-1}+\mathrm{\μm}*{\mathrm{load}}_{\mathrm{cell}-m};$

Said L be said in to the decline information of other base stations, load _Cell-mBe the load of the maximum sub-district of load, α 2, β 2 values are the real number more than or equal to 0, and μ m is non-0 real number, and μ 1 is a real number.

Said adjusting module is positioned at the sub-district;

Said adjustment control unit is positioned at access service network, sub-district, connection service network or relay station.In sum, the present invention provides a kind of uplink interference control device and method based on load balancing, can improve the adaptability of wireless communication system to actual environment significantly, and the up-link wireless bandwidth availability ratio effectively is provided, and improves the up service quality at terminal.

Description of drawings

Fig. 1 is the inter-cell uplink interference sketch map;

Fig. 2 is the flow chart of the inventive method embodiment one correspondence;

Fig. 3 is the flow chart of application example one correspondence of the present invention;

Fig. 4 is the flow chart of application example two correspondences of the present invention.

Embodiment

Thereby the load information that the embodiment of the invention disturbs controlling schemes not make full use of the adjacent area to tradition carries out the problem that uplink interference control causes the upstream frequency decrease in efficiency, has proposed a kind of interference control method based on load balancing.

Device embodiment

Present embodiment provides a kind of Interference Control device based on load balancing, comprises adjusting module, can also comprise the adjustment control unit; Adjusting module is positioned at the sub-district, and the adjustment control unit is positioned at access service network, sub-district, connection service network or relay station.

Adjusting module is used for the transmitting power according to terminal under this sub-district of load information adjustment of the part or all of sub-district of cell set, place, sub-district.

The adjustment control unit is used for going out according to the following information calculations of all or part of sub-district of cell set the average uplink interference level of said cell set: (a) uplink load information, or (b) uplink load information and uplink interference level information;

The adjustment control unit also is used for disturbing level value that the adjustment information of adjusting terminal transmit power is set according to said average uplink interference level and target, and adjustment information is sent to adjusting module;

Adjusting module is according to the transmitting power at above-mentioned adjustment information adjustment terminal.

Further, adjust the average uplink interference level of control unit according to following method calculation plot group:

${\mathrm{IoT}}_{\mathrm{avg}}=\mathrm{\α}1*\left(\underset{i=1}{\overset{N}{\mathrm{\Σ}}}\frac{{\mathrm{\γ}}_i*{\mathrm{IoT}}_i}{\underset{i=1}{\overset{N}{\mathrm{\Σ}}}{\mathrm{\γ}}_i{\mathrm{IoT}}_i}{\mathrm{IoT}}_i\right)+\mathrm{\β}1*\left(\underset{i=1}{\overset{N}{\mathrm{\Σ}}}\frac{{\mathrm{\μ}}_i*{\mathrm{load}}_i}{\underset{i=1}{\overset{N}{\mathrm{\Σ}}}{\mathrm{\μ}}_i{\mathrm{load}}_i}{\mathrm{load}}_i\right)$

Wherein, IoT _iBe the uplink interference level information of cell i, load _iBe the uplink load information of cell i, α 1 is the real number more than or equal to 0, and β 1 is the real number greater than 0, and α 1 is 1 with β 1 sum, γ _iThe IoT of expression cell i _iShared proportion, μ _iThe load of expression cell i _iShared proportion, γ _iWith μ _iValue be real number greater than 0.

The adjustment control unit disturbs level value that the adjustment information of adjusting terminal transmit power is set according to said average uplink interference level and target and is meant:

When average uplink interference level is disturbed level value less than target, current adjustment information K is increased step delta, when average uplink interference level is disturbed level value greater than target, current adjustment information K is reduced step delta.

Further, adjusting module any adjustment

in such a way

(a) $P_{\mathrm{Tx}}^{\mathrm{UL}}=K+L^{\mathrm{UL}}+{\mathrm{SINR}}^{\mathrm{DL},m};$

(b) first basis Calculate SINR _Opt, basis again

Calculate said

Adjusting module can also be adjusted the transmitting power at terminal in such a way:

$P_{\mathrm{Tx}}^{\mathrm{UL}}=\mathrm{\α}2*L+\mathrm{\β}2*{\mathrm{IoT}}_{t\arg \mathrm{et}}+\mathrm{\μ}1*{\mathrm{load}}_{\mathrm{cell}-1}+\mathrm{\μm}*{\mathrm{load}}_{\mathrm{cell}-m};$

L be said in to the decline information of other base stations, load _Cell-mBe the load of the maximum sub-district of load, α 2, β 2 values are the real number more than or equal to 0, and μ m is non-0 real number, and μ 1 is a real number.

Method embodiment

Present embodiment provides a kind of interference control method based on load balancing, and the sub-district is according to the transmitting power at terminal under this sub-district of load information adjustment of part or all of sub-district in the cell set of place.

Below specify the inventive method through two embodiment

Embodiment one

Present embodiment provides a kind of interference control method based on load balancing, and as shown in Figure 2, concrete steps comprise:

Step S11, sub-district to self uplink load information that the major general obtains is notified to the adjustment control unit;

Further, the sub-district can also be notified self the uplink interference level information that obtains to the adjustment control unit.

This adjustment control unit can but be not limited to be positioned at access service network, sub-district (being the base station), connection service network or relay station etc.;

Step S12; The following information calculations of all or part of sub-district obtains the average uplink interference level of this cell set in place, the said sub-district cell set that adjustment control unit utilization receives: (a) uplink load information, or (b) uplink load information and uplink interference level information;

Step S13, the adjustment control unit disturbs level value to compare to said average uplink interference level and predefined target, and according to comparative result the adjustment information of sub-district is set;

Step S14, the adjusting module of sub-district is according to the transmitting power of adjustment information adjustment subordinate terminal.

Further specify the flow process of Fig. 2 below in conjunction with application example 1.

Application example 1

Step 101: sub-district Cell-1 obtains the uplink load information load of oneself _i, uplink interference level information IoT _i, and give access service network with above-mentioned information reporting;

Step 102: access service network utilizes the above-mentioned information of N sub-district to calculate the average uplink interference level IoT of this cell set according to formula (1) _Avg

${\mathrm{IoT}}_{\mathrm{avg}}=\mathrm{\α}1*\left(\underset{i=1}{\overset{N}{\mathrm{\Σ}}}\frac{{\mathrm{\γ}}_i*{\mathrm{IoT}}_i}{\underset{i=1}{\overset{N}{\mathrm{\Σ}}}{\mathrm{\γ}}_i{\mathrm{IoT}}_i}{\mathrm{IoT}}_i\right)+\mathrm{\β}1*\left(\underset{i=1}{\overset{N}{\mathrm{\Σ}}}\frac{{\mathrm{\μ}}_i*{\mathrm{load}}_i}{\underset{i=1}{\overset{N}{\mathrm{\Σ}}}{\mathrm{\μ}}_i{\mathrm{load}}_i}{\mathrm{load}}_i\right)---\left(1\right)$

In the formula (1), α 1 is the real number more than or equal to 0, and β 1 is the real number greater than 0, and sum of the two is 1, and α 1=0.6 also can be provided with according to the requirement of operator in real system flexibly usually;

γ _iThe IoT of expression cell i _iShared proportion, γ _iValue can be for greater than 0 real number, and value can be 1 usually, also can be to work as IoT _iGreater than predefined critical interference level permissible value IoT _DivisionThe time, IoT _iBe worth big more γ _iBig more.

μ _iThe load of expression cell i _iShared proportion, μ _iValue can be for greater than 0 real number, and value can be 1 usually, also can be to work as load _iGreater than predefined critical interference level permissible value load _DivisionThe time, load _iBe worth big more μ _iValue is big more.

Step 103: access service network is with IoT _AvgDisturb level value IoT with predefined target _ThCompare, and according to formula (2) adjustment K value;

K is the adjustment information of adjustment terminal transmit power

; When adjusting first, access service network is that adjustment information is provided with an initial value, and this initial value is the real number greater than 0, when adjusting afterwards, increases or reduce this adjustment information according to step delta according to formula (2).

In the formula (2), Δ can be a preset definite value for the adjustment step-length, also can be according to IoT _AvgAnd IoT _ThThe order of magnitude of difference set, the absolute value of the two difference is big more, the Δ of setting is big more.

$\left\{\begin{array}{ccc}K=K+\mathrm{\&Delta;}\left[\mathrm{dB}\right]& \mathrm{if}& {\mathrm{IoT}}_{\mathrm{avg}}<{\mathrm{IoT}}_{\mathrm{Th}}\\ K=K-\mathrm{\&Delta;}\left[\mathrm{dB}\right]& \mathrm{if}& {\mathrm{IoT}}_{\mathrm{avg}}>{\mathrm{IoT}}_{\mathrm{Th}}\end{array}\right.---\left(2\right)$

Step 104: access service network notifies adjustment information K to sub-district Cell-1, and the SINR of subordinate terminal is confirmed in this sub-district _Opt

Particularly, cell base station is confirmed the SINR of subordinate terminal _OptMethod can for:

(a1) elder generation confirms the transmitting power of subordinate terminal MS1 according to formula (3)

Calculate SINR according to formula (4) then _Opt

$P_{\mathrm{Tx}}^{\mathrm{UL}}=K+L+{\mathrm{SINR}}^{\mathrm{DL},m}---\left(3\right)$

In the formula (3), L is the up circuit loss value of the sub-district Cell-1 MS1 that estimates to obtain, the same prior art of its evaluation method, SINR ^{DL, m}It is the downstream signal interference-to-noise ratio that MS1 measures.

${\mathrm{SINR}}_{\mathrm{OPT}}=P_{\mathrm{Tx}}^{\mathrm{UL}}-(L+\mathrm{NI}+\mathrm{Offset}\_{\mathrm{AMS}}_{\mathrm{perAMS}}+\mathrm{Offset}\_{\mathrm{ABS}}_{\mathrm{perAMS}})---\left(4\right)$

In the formula (4), L is the up circuit loss value of the sub-district Cell-1 MS1 that estimates to obtain, and M is the uplink interference level that sub-district Cell-1 measures, Offset_AMS _PerABSBe that sub-district Cell-1 notifies to terminal MS 1, Offset_AMS _PerAMSBe that the terminal sets up on their own, its mode can be with reference to prior art.SIR _DLBe the downstream signal interference-to-noise ratio that MS1 measures, N _rBe the reception antenna number of base station, SINR _MINIt is the reception Signal Interference and Noise Ratio value that a minimum tolerance at terminal is told in the base station.

(a2) calculate SINR according to the K value and the formula (5) that receive _Opt

Step 105: sub-district Cell-1 is according to SINR _OptConfirm the modulation coding mode of terminal MS 1 transmission upstream data employing and inform the terminal through means of signaling;

Step 106: the terminal calculates according to the modulation coding mode that receives and sends the transmitting power that upstream data adopts, the same prior art of its account form.

Embodiment two

Present embodiment provides another kind of interference control method based on load balancing, and as shown in Figure 3, concrete steps comprise: the sub-district is adjusted the transmitting power of subordinate terminal at least according to the load information of the maximum adjacent area of load in the cell set of place;

Further, the sub-district can also be according to the transmitting power of one or more adjustment subordinate terminal in the following information: the terminal is to the target uplink interference level of the adjacent area of the load information of the decline information of adjacent area, this sub-district and load maximum.

Further specify the method for embodiment two below in conjunction with application example 2.

Application example 2

As shown in Figure 4, may further comprise the steps:

Step 201: terminal MS 1 measures the signal quality information of adjacent area Cell-2, Cell-3, Cell-4, the signal quality information RSSI of the top-quality Cell-2 of selective channel _Cell-2Notify the Serving cell Cell-1 of oneself;

Wherein signal quality information is that MS1 obtains through the synchronizing channel of measuring Cell-2, Cell-3, Cell-4.

After step 202:Cell-1 obtains the signal quality information of Cell-2, calculate the decline information L of MS1 to other base stations according to formula (6), in this application example, MS1 is the decline information of MS1 to Cell-2, P to the decline information of other base stations _Cell-2Transmitting power for Cell-2.

L＝P _cell-2-RSSI _cell-2 (6)

Cell-1 utilizes the target uplink interference level IoT of L, Cell-m _Target, Cell-m loading condition load _Cell-mConfirm that through formula (7) transmitting power of terminal MS 1, Cell-m are the maximum sub-district of load, in the formula (7), α 2, β 2 values be the real number more than or equal to 0, and usually equal value is 1, and μ m is non-0 real number, and μ 1 is a real number, load _Cell-1Big more, μ 1 value is more little, in like manner, and load _Cell-mBig more, μ m value is more little;

$P_{\mathrm{Tx}}^{\mathrm{UL}}=\mathrm{\&alpha;}2*L+\mathrm{\&beta;}2*{\mathrm{IoT}}_{t\arg \mathrm{et}}+\mathrm{\&mu;}1*{\mathrm{load}}_{\mathrm{cell}-1}+\mathrm{\&mu;m}*{\mathrm{load}}_{\mathrm{cell}-m}---\left(7\right)$

Step 203: sub-district Cell-1 calculates SINR according to formula (4) _Opt, and then according to SINR _OptConfirm the modulation coding mode that terminal MS 1 transmission upstream data adopts, inform the modulation coding mode that terminal MS 1 adopts through means of signaling afterwards.

Step 204: terminal MS 1 is received the modulation coding mode that the base station issues, and calculates the transmitting power of sending upstream data, uses this transmitting power to send upstream data.

Preferably, when neighbor cell did not all have load, MS1 can use maximum transmitting power to send upstream data.

Preferably, report the signal quality information RSSI of Cell-2, Cell-3 simultaneously as MS1 _Cell-2, RSSI _Cell-3When giving Serving cell Cell-1; After Cell-1 obtains the signal quality information of above-mentioned each neighbor cell, obtain the decline information L of MS1 to other base stations according to formula (8), promptly choose MS1 in the neighbor cell maximum decline information as decline information to other base stations; In the formula (8), P _Cell-2Be the transmitting power of Cell-2, P _Cell-3Transmitting power for Cell-3.

L＝max(P _cell-2-RSSI _cell-2，P _cell-3-RSSI _cell-3) (8)

Alternatively, when MS1 report Cell-1 be channel information the time, this channel information can directly be carried out subsequent operation by Cell-1 as decline information, or carries out subsequent operation after handling through smoothing filter.

When report be the channel information of a plurality of neighbor cells the time, also only get wherein maximum value as the decline information L of MS1 to other base station;

Alternatively, when MS1 report Cell-1 be positional information the time, Cell-1 topology of networks capable of using obtains the distance of MS1 and other adjacent C ell, chooses the cell nearest with MS1, calculating MS1 is to the path loss information (information that promptly declines L) of this cell.

As stated; The technical scheme that provides by the embodiment of the invention; Through effectively based on the interference control method of load balancing to improve the service efficiency of frequency resource, improve the performance of entire wireless communication system (for example adopting the wireless communication system of LTE (Long Term Evolution), 802.16, UMB standards such as (Ultra Mobile Broadband)).

One of ordinary skill in the art will appreciate that all or part of step in the said method can instruct related hardware to accomplish through program, said program can be stored in the computer-readable recording medium, like read-only memory, disk or CD etc.Alternatively, all or part of step of the foregoing description also can use one or more integrated circuits to realize.Correspondingly, each the module/unit in the foregoing description can adopt the form of hardware to realize, also can adopt the form of software function module to realize.The present invention is not restricted to the combination of the hardware and software of any particular form.

The above is merely the preferred embodiments of the present invention, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.All within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.

Claims (14)

1. uplink interference control method based on load balancing comprises:

The sub-district is according to the transmitting power at terminal under this sub-district of load information adjustment of part or all of sub-district in the cell set of place.

2. the method for claim 1 is characterized in that, said method specifically is meant:

The adjustment control unit goes out the average uplink interference level of said cell set according to the following information calculations of all or part of sub-district in the cell set: uplink load information or uplink load information and uplink interference level information; Disturb level value that the adjustment information of adjustment terminal transmit power is set according to said average uplink interference level and target afterwards, the sub-district is according to the transmitting power at said adjustment information adjustment terminal afterwards.

3. method as claimed in claim 2 is characterized in that:

Said adjustment control unit is according to the average uplink interference level of following method calculation plot group:

${\mathrm{IoT}}_{\mathrm{avg}}=\mathrm{\&alpha;}1*\left(\underset{i=1}{\overset{N}{\mathrm{\&Sigma;}}}\frac{{\mathrm{\&gamma;}}_i*{\mathrm{IoT}}_i}{\underset{i=1}{\overset{N}{\mathrm{\&Sigma;}}}{\mathrm{\&gamma;}}_i{\mathrm{IoT}}_i}{\mathrm{IoT}}_i\right)+\mathrm{\&beta;}1*\left(\underset{i=1}{\overset{N}{\mathrm{\&Sigma;}}}\frac{{\mathrm{\&mu;}}_i*{\mathrm{load}}_i}{\underset{i=1}{\overset{N}{\mathrm{\&Sigma;}}}{\mathrm{\&mu;}}_i{\mathrm{load}}_i}{\mathrm{load}}_i\right)$

Said IoT _iBe the uplink interference level information of cell i, load _iBe the uplink load information of cell i, α 1 is the real number more than or equal to 0, and β 1 is the real number greater than 0, and α 1 is 1 with β 1 sum, γ _iThe IoT of expression cell i _iShared proportion, μ _iThe load of expression cell i _iShared proportion, said γ _iWith μ _iValue be real number greater than 0.

4. method as claimed in claim 2 is characterized in that:

The adjustment information that said adjustment control unit disturbs level value that the adjustment terminal transmit power is set according to said average uplink interference level and target is meant:

When average uplink interference level is disturbed level value less than target, current adjustment information K is increased step delta, when average uplink interference level is disturbed level value greater than target, current adjustment information K is reduced step delta.

5. method as claimed in claim 2 is characterized in that:

Said adjustment control unit is positioned at access service network, sub-district, connection service network or relay station.

6. method as claimed in claim 2 is characterized in that:

Any adjustment in such a way of said sub-district

(a) $P_{\mathrm{Tx}}^{\mathrm{UL}}=K+L^{\mathrm{UL}}+{\mathrm{SINR}}^{\mathrm{DL},m};$

(b) first basis

Calculate SINR _Opt, basis again

Calculate said

7. the method for claim 1 is characterized in that, said method specifically is meant:

Said sub-district is adjusted the transmitting power at terminal in such a way:

$P_{\mathrm{Tx}}^{\mathrm{UL}}=\mathrm{\&alpha;}2*L+\mathrm{\&beta;}2*{\mathrm{IoT}}_{t\arg \mathrm{et}}+\mathrm{\&mu;}1*{\mathrm{load}}_{\mathrm{cell}-1}+\mathrm{\&mu;m}*{\mathrm{load}}_{\mathrm{cell}-m};$

Said L be said in to the decline information of other base stations, load _Cell-mBe the load of the maximum sub-district of load, α 2, β 2 values are the real number more than or equal to 0, and μ m is non-0 real number, and μ 1 is a real number.

8. the uplink interference control device based on load balancing comprises adjusting module; It is characterized in that:

Said adjusting module, be used for according to sub-district place cell set partly or entirely the load information of sub-district adjust the transmitting power at terminal under the said sub-district.

9. device as claimed in claim 8 is characterized in that:

Said device also comprises the adjustment control unit, is used for going out according to the following information calculations of all or part of sub-district of cell set the average uplink interference level of said cell set: (a) uplink load information, or (b) uplink load information and uplink interference level information;

Said adjustment control unit also is used for disturbing level value that the adjustment information of adjusting terminal transmit power is set according to said average uplink interference level and target, and said adjustment information is sent to adjusting module;

Said adjusting module is according to the transmitting power at said adjustment information adjustment terminal.

10. device as claimed in claim 9 is characterized in that:

Said adjustment control unit is according to the average uplink interference level of following method calculation plot group:

${\mathrm{IoT}}_{\mathrm{avg}}=\mathrm{\&alpha;}1*\left(\underset{i=1}{\overset{N}{\mathrm{\&Sigma;}}}\frac{{\mathrm{\&gamma;}}_i*{\mathrm{IoT}}_i}{\underset{i=1}{\overset{N}{\mathrm{\&Sigma;}}}{\mathrm{\&gamma;}}_i{\mathrm{IoT}}_i}{\mathrm{IoT}}_i\right)+\mathrm{\&beta;}1*\left(\underset{i=1}{\overset{N}{\mathrm{\&Sigma;}}}\frac{{\mathrm{\&mu;}}_i*{\mathrm{load}}_i}{\underset{i=1}{\overset{N}{\mathrm{\&Sigma;}}}{\mathrm{\&mu;}}_i{\mathrm{load}}_i}{\mathrm{load}}_i\right)$

Said IoT _iBe the uplink interference level information of cell i, load _iBe the uplink load information of cell i, α 1 is the real number more than or equal to 0, and β 1 is the real number greater than 0, and α 1 is 1 with β 1 sum, γ _iThe IoT of expression cell i _iShared proportion, μ _iThe load of expression cell i _iShared proportion, said γ _iWith μ _iValue be real number greater than 0.

11. device as claimed in claim 9 is characterized in that:

The adjustment information that said adjustment control unit disturbs level value that the adjustment terminal transmit power is set according to said average uplink interference level and target is meant:

When average uplink interference level is disturbed level value less than target, current adjustment information K is increased step delta, when average uplink interference level is disturbed level value greater than target, current adjustment information K is reduced step delta.

12. device as claimed in claim 9 is characterized in that:

Any adjustment

in such a way of said adjusting module

(a) $P_{\mathrm{Tx}}^{\mathrm{UL}}=K+L^{\mathrm{UL}}+{\mathrm{SINR}}^{\mathrm{DL},m};$

(b) first basis

Calculate SINR _Opt, basis again

Calculate said

13. device as claimed in claim 8 is characterized in that:

Said adjusting module is adjusted the transmitting power at terminal in such a way:

$P_{\mathrm{Tx}}^{\mathrm{UL}}=\mathrm{\&alpha;}2*L+\mathrm{\&beta;}2*{\mathrm{IoT}}_{t\arg \mathrm{et}}+\mathrm{\&mu;}1*{\mathrm{load}}_{\mathrm{cell}-1}+\mathrm{\&mu;m}*{\mathrm{load}}_{\mathrm{cell}-m};$

Said L be said in to the decline information of other base stations, load _Cell-mBe the load of the maximum sub-district of load, α 2, β 2 values are the real number more than or equal to 0, and μ m is non-0 real number, and μ 1 is a real number.

14. device as claimed in claim 9 is characterized in that:

Said adjusting module is positioned at the sub-district;

Said adjustment control unit is positioned at access service network, sub-district, connection service network or relay station.

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