CN102238556A - Method and system for processing interference by negotiation - Google Patents
Method and system for processing interference by negotiation Download PDFInfo
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- CN102238556A CN102238556A CN2010101605658A CN201010160565A CN102238556A CN 102238556 A CN102238556 A CN 102238556A CN 2010101605658 A CN2010101605658 A CN 2010101605658A CN 201010160565 A CN201010160565 A CN 201010160565A CN 102238556 A CN102238556 A CN 102238556A
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Abstract
The invention discloses a method for processing interference by negotiation. The method comprises that: an interfered source network element transmits an interference negotiation parameter regulation message to a target network element; and the target network element judges whether to accept the parameter regulation of the source network element or not according to a regulation parameter in the interference negotiation parameter regulation message, and returns a response message to the source network element. The invention also discloses a system for processing the interference by the negotiation. By the method and the system provided by the invention, the problem of influence of uplink interference on an uplink service in the conventional home NodeB system is solved, and the occurrence of neighbor cell user equipment (UE) power regulation rising caused by the improvement of maximum transmission power of own UE of an interfered cell is avoided.
Description
Technical field
The present invention relates to the interference treatment technology in the radio honeycomb communication system, relate in particular to a kind of method and system that disturbs of handling through consultation.
Background technology
Interference Control is important problem in the wireless telecommunication system.Presence of intercell interference can be more outstanding under the frequency deployment scenario of sub-district together, and in addition, the minizone also exists the adjacent problem of disturbing frequently under the alien frequencies situation.It is former thereby different according to disturbing different generations to solve the method for disturbing, and for example: handle the interference of cell edge, typical method adopts the channeling technology exactly.Can and make rational planning for and accomplish minimizing of interference eliminated by common solution interference method for macro base station.Yet along with the development of wireless technology, introduced femto (femto) sub-district, the introducing of femto sub-district has strengthened the complexity of wireless network, makes that situation about disturbing is more outstanding.Home eNodeB is a kind of typical femto sub-district, it is a kind of small-sized, lower powered base station, be deployed in indoor places such as family and office, main effect is in order higher service rate to be provided to the user and to reduce and use the needed expense of high rate services, remedying the deficiency that existing distributed cellular radio communication system covers simultaneously.The advantage of Home eNodeB is economical, convenient, low-power output, plug and play etc.
Home eNodeB is the general designation of the Home eNodeB (HeNB, Home evolved NodeB) of traditional-family base station (HNB, Home NodeB) and evolution, abbreviates H (e) NB as.The network configuration of HeNB system as shown in Figure 1, the network configuration of HNB system is as shown in Figure 2.The Home eNodeB user is connected to the core net network by H (e) NB Access Network (AN, Access Network), and wherein, H (e) NB AN is by H (e) NB and H (e) NB gateway (GW, Gateway) common composition.And for the HeNB system, HeNB can not direct and Mobility Management Entity (MME, the MobilityManagement Entity) connection by HeNB GW.
The deployment of H (e) NB has strengthened the interference complexity of wireless communication system.Because H (e) NB number is numerous, therefore can't on frequency, macrocell and other contiguous H (e) NB be demarcated fully, and H (e) NB more is under the coverage of macrocell.Interference between the sub-district can be divided into two kinds of uplink interference and descending interference.Wherein, uplink interference have HUE (Home UE) under following several scene: H (e) NB to the interference of macrocell (Macro Cell), HUE under the Home eNodeB to the interference of other Home eNodeB, MUE (Macro UE) under the macrocell to the interference of Home eNodeB or other macrocells.Wherein, HUE is the UE under the Home eNodeB service, and MUE is the UE that is under the macrocell service.
When H (e) NB or macrocell were subjected to uplink interference, the terminal quality of uplink signal that the sub-district receives will variation.The common method that addresses this problem is the modulation system of up use lower-order, for example: Adaptive Modulation and Coding (AMC, Adaptive Modulation and Coding) or presence of intercell interference control (ICIC, Inter-Cell Interference Control), perhaps improve the transmitting power of terminal.
Yet, adopt the method that improves terminal transmit power will cause certain problem.With HUE MNB being caused uplink interference is example, and as shown in Figure 3, when HUE produced uplink interference to macrocell, macro base station will be adjusted the maximum transmission power of the MUE under the macrocell; But because MUE is closer apart from Home eNodeB, so the lifting of the uplink transmission power of MUE, uplink interference might be produced to HNB.Then, HNB can adjust the maximum transmission power of the HUE under it again, so repeatedly, has caused a kind of problem that is called power ramp, and power ramp should be avoided in uplink interference solution process.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of method and system that disturbs of handling through consultation, to solve the uplink interference problem in existing H (e) the NB system.
For achieving the above object, technical scheme of the present invention is achieved in that
The invention provides a kind of method of disturbing of handling through consultation, this method comprises:
The source network element that is disturbed sends to target network element and disturbs consultation parameter to adjust message;
Described target network element judges whether to accept the parameter adjustment of described source network element, and returns response message to described source network element according to the adjustment parameter of disturbing in the consultation parameter adjustment message.
Comprise in the described adjustment parameter: the maximum transmission power of user terminal (UE) under the network element jurisdiction district, described source;
Perhaps, comprising: the maximum transmission power of UE under the network element jurisdiction district, described source, and the UE under the network element jurisdiction district, source is to the reference path loss of target network element jurisdiction district.
Described according to adjusting the parameter adjustment that parameter judges whether to accept the source network element, specifically comprise:
Described target network element is calculated UE and is adopted the noise rise contribution that produces behind the described maximum transmission power, and whether judges described noise rise contribution greater than preset threshold, if greater than, then refuse the parameter adjustment of source network element; Otherwise, accept the parameter adjustment of source network element.
Comprise in the described adjustment parameter: under the network element jurisdiction district, source after the power adjustment of UE to the contribution of the noise rise of target network element jurisdiction district.
Described according to adjusting the parameter adjustment that parameter judges whether to accept the source network element, specifically comprise:
Whether described target network element judges the noise rise contribution of disturbing in the adjustment parameter greater than preset threshold, if greater than, then refuse the parameter adjustment of source network element; Otherwise, accept the parameter adjustment of source network element.
Also comprise in the described adjustment parameter: effective retention time of described adjustment parameter.
Described target network element is returned response message to the source network element, specifically comprises:
When described target network element is accepted the parameter adjustment of source network element in judgement, return the adjustment of interference consultation parameter to described source network element and accept message; When judging the parameter adjustment of refusal source network element, return the interference consultation parameter to described source network element and adjust refuse information.
Described interference consultation parameter is adjusted and is comprised the adjustment amount that described target network element is accepted in the refuse information, and described adjustment amount comprises: the noise contribution scope that behind power that permission is adjusted or the source network element adjustment power target network element is caused.
Described interference consultation parameter is adjusted and is also comprised reason that refusal is adjusted and/or the stand-by period of adjusting next time in the refuse information.
The present invention also provides a kind of system that disturbs that handles through consultation, and this system comprises: source network element and the target network element disturbed, wherein,
The described source network element that is disturbed is used for sending the interference consultation parameter to target network element and adjusts message;
Described target network element is used for judging whether to accept the parameter adjustment of described source network element, and returning response message to described source network element according to disturbing consultation parameter to adjust the adjustment parameter of message.
The maximum transmission power that comprises UE under the network element jurisdiction district, described source in the described adjustment parameter;
Perhaps, comprising: the maximum transmission power of UE under the network element jurisdiction district, described source, and the UE under the network element jurisdiction district, source is to the reference path loss of target network element jurisdiction district.
Described target network element is further used for, and calculate UE and adopt the noise rise contribution that produces behind the described maximum transmission power, and whether judge described noise rise contribution greater than preset threshold, if greater than, then refuse the parameter adjustment of source network element; Otherwise, accept the parameter adjustment of source network element.
Comprise in the described adjustment parameter: under the network element jurisdiction district, source after the power adjustment of UE to the contribution of the noise rise of target network element jurisdiction district.
Described target network element is further used for, and judge and disturb the noise rise contribution of adjusting in the parameter whether greater than preset threshold, if greater than, then refuse the parameter adjustment of source network element; Otherwise, accept the parameter adjustment of source network element.
Also comprise in the described adjustment parameter: effective retention time of described adjustment parameter.
Described target network element is further used for, and when the parameter adjustment of source network element is accepted in judgement, returns the adjustment of interference consultation parameter to described source network element and accepts message; When judging the parameter adjustment of refusal source network element, return the interference consultation parameter to described source network element and adjust refuse information.
Described interference consultation parameter is adjusted and is comprised the adjustment amount that described target network element is accepted in the refuse information, and described adjustment amount comprises: the noise contribution scope that behind power that permission is adjusted or the source network element adjustment power target network element is caused.
Described interference consultation parameter is adjusted and is also comprised reason that refusal is adjusted and/or the stand-by period of adjusting next time in the refuse information.
A kind of method and system that disturbs of handling through consultation provided by the present invention, the source network element that is disturbed sends to target network element and disturbs consultation parameter to adjust message; Target network element judges whether to accept the parameter adjustment of source network element, and returns response message to the source network element according to the adjustment parameter of disturbing in the consultation parameter adjustment message.By the present invention, solved in existing H (e) the NB system because uplink interference to the influence of uplink service, and has been avoided owing to promote the generation that the maximum transmission power of the UE that is subjected to interfered cell self causes adjacent area UE power adjustment to rise.
Description of drawings
Fig. 1 is the schematic network structure of HeNB system in the prior art;
Fig. 2 is the schematic network structure of HNB system in the prior art;
Fig. 3 is the uplink interference schematic diagram in existing H (e) the NB system;
Fig. 4 is the method flow diagram of handling interference through consultation of the embodiment of the invention one;
Fig. 5 is the method flow diagram of handling interference through consultation of the embodiment of the invention two;
Fig. 6 is the method flow diagram of handling interference through consultation of the embodiment of the invention three;
Fig. 7 is the method flow diagram of handling interference through consultation of the embodiment of the invention four;
Fig. 8 is the method flow diagram of handling interference through consultation of the embodiment of the invention five.
Embodiment
The technical solution of the present invention is further elaborated below in conjunction with the drawings and specific embodiments.
A kind of method of disturbing of handling through consultation provided by the present invention comprises: the source network element that is disturbed sends to target network element and disturbs consultation parameter to adjust message; Target network element judges whether to accept the parameter adjustment of source network element, and returns response message to the source network element according to the adjustment parameter of disturbing in the consultation parameter adjustment message.When the parameter adjustment of source network element is accepted in judgement, return the adjustment of interference consultation parameter to the source network element and accept message; When judging the parameter adjustment of refusal source network element, return the interference consultation parameter to the source network element and adjust refuse information.
Wherein, adjust the maximum transmission power that can include only UE under the network element jurisdiction district, source in the parameter; Perhaps, comprise the maximum transmission power of UE under the network element jurisdiction district, source, and the UE under the network element jurisdiction district, source is to the reference path loss of target network element jurisdiction district.Accordingly, target network element is calculated UE and is adopted the noise rise contribution that produces behind this maximum transmission power, and whether judges the noise rise contribution greater than preset threshold, if greater than, then refuse the parameter adjustment of source network element; Otherwise, accept the parameter adjustment of source network element.
After adjusting the power adjustment that can also include only UE under the network element jurisdiction district, source in the parameter noise rise of target network element jurisdiction district is contributed; Accordingly, whether target network element judges the noise rise contribution of disturbing in the adjustment parameter greater than preset threshold, if greater than, then refuse the parameter adjustment of source network element; Otherwise, accept the parameter adjustment of source network element.
In addition, can also comprise effective retention time of adjusting parameter in the above-mentioned adjustment parameter.
When target network element is returned interference consultation parameter adjustment refuse information, comprise the adjustment amount that target network element is accepted in this message, this adjustment amount comprises: the noise contribution scope that behind power that permission is adjusted or the source network element adjustment power target network element is caused; Can also comprise reason that refusal is adjusted and/or the stand-by period of adjusting next time.
Below in conjunction with specific embodiment the above-mentioned method of disturbing of handling is through consultation further elaborated.
Embodiments of the invention one are described under Long Term Evolution (LTE, the Long Term Evolution) system, carry out the flow process that Interference Control was consulted and then finished in parameter adjustment by direct interface.Cell 1 among this embodiment under the supposition eNB1 has been subjected to uplink interference, and the Cell 2 of eNB 2 is a certain adjacent cells that possible cause interference to Cell 1.ENB 1 and eNB 2 can be macro base station or Home eNodeB, are that X2 interface is that example describes with the direct interface that exists between eNB 1 and the eNB 2.This direct interface can be to be based upon being connected of eNB 1 and eNB 2; If eNB 2 is the Home eNodeB that inserts core net by femto gateway, so this direct interface also can be based upon between the femto gateway of eNB 1 and eNB 2 be connected and femto gateway to the connection of eNB2; If eNB 1 is the Home eNodeB that inserts core net by femto gateway, so this direct interface also can be based upon eNB 1 to the connection of family's base-station gateway and femto gateway to the connection of eNB 2.Concrete Interference Control flow process as shown in Figure 4, mainly may further comprise the steps:
Step 401, eNB 1 judges whether the reception interference power of Cell 1 is higher than preset threshold, if be higher than preset threshold, thinks that then Cell 1 has been subjected to uplink interference, and then execution in step 402; Otherwise, need not to carry out the control of uplink interference.
Step 402, eNB 1 sends the interference consultation parameter to the adjacent area and adjusts message according to the adjacent area list information of Cell 1.
With the adjacent area list information is that Cell 2 is an example, and eNB 1 sends to eNB 2 and disturbs consultation parameter to adjust message, and the consultation parameter in this message comprises: the sign of the sign of Cell 1, Cell 2, the UE maximum transmission power adjustment information under the Cell 1; After can also comprising the UE power adjustment under the Cell 1 in this message the noise rise of Cell2 is contributed; Can also comprise UE under the Cell 1 in this message to the reference path loss of Cell 2, the minimum path loss of the Cell 2 that this can receive with the UE under the Cell 1 with reference to path loss or the mean value of path loss are represented; Effective retention time that can also comprise consultation parameter in this information.Wherein, the maximum transmission power of UE can be the absolute maximum power transmission value that the UE under the Cell 1 allows, and also can be the adjustment amount of the maximum transmission power of the UE under the current C ell 1.Noise rise contribution can calculate by following formula: make an uproar in the end of (maximum transmission power of UE-with reference to path loss)/Cell 2, and the reference path loss here is meant that UE under the Cell 1 is to the reference path loss of Cell 2.The end of wherein the supposing Cell2 eNB1 precognition of making an uproar.
Step 403, eNB 2 judges the adjustment parameter in the message after receiving and disturbing consultation parameter to adjust message.
If adjusting parameter is the maximum transmission power of UE, judge that then UE under the Cell 1 adjusts to whether accepting within the scope at Cell 2 of the interference that Cell 2 produced behind the maximum transmission power, the concrete method of judging is: calculate UE and adopt the noise rise contribution (or interference power) that produces behind this maximum transmission power, and judge whether this noise rise contribution (or interference power) has exceeded Cell 2 preset threshold, if exceeded Cell 2 preset threshold then refused the adjustment of UE maximum transmission power; If do not exceed, then allow the adjustment of UE maximum transmission power.
If disturb to adjust parameter and be after the adjustment of UE power, judge that then this noise rise contribution whether the accepting within the scope of Cell 2, if exceeded the scope of accepting of Cell 2, then refuses parameter adjustment to the noise rise contribution of adjacent area on every side; If do not exceed, then allow parameter adjustment.
Under the situation of refusal parameter adjustment, execution in step 404a; Under the situation that allows parameter adjustment, execution in step 404b.
Step 404a, eNB 2 send to eNB 1 and disturb consultation parameter to adjust refuse information, comprise in this message: the sign of the sign of Cell 1, Cell 2; The adjusting range that can also comprise Cell 2 acceptable maximum transmission power, its adjusting range can be the adjusting range of the absolute maximum transmission power of UE under the Cell 1, also can be the adjusting range of current transmit power, the scope of Cell 2 acceptable noise liftings contribution; Can also comprise the reason of consulting refusal in the message and/or wait for the time that consult next time.
Step 404b, eNB 2 send to eNB 1 and disturb the consultation parameter adjustment to accept message, comprise the sign of Cell 1, the sign of Cell 2 in this message.
Step 405, eNB 1 determines the adjustment of the maximum transmission power of its UE according to the adjacent area feedack.Thereby solved because uplink interference to the influence of uplink service, and has been avoided owing to promote riseing that adjacent area terminal power that the maximum transmission power of the terminal of self causes adjusts.
In negotiation mechanism shown in Figure 4, for the situation that connects communication between the HeNB by HeNB GW, HeNB GW is responsible for transmitting the interference consultation parameter and adjusts message and disturb consultation parameter to adjust message response (accept and refuse) message.
Need to prove, more than disturbing consultation parameter to adjust message can multiplexing existing eNB configuration update message, load information (Load Information) message, also can carry the adjustment parameter by handoff request message and finish, can also be newly-increased message in addition.Disturbing consultation parameter to adjust message acceptance message can multiplexing eNB config update response message, handover request ack message, also can finish by newly-increased message.Disturbing consultation parameter to adjust the message refuse information can multiplexing eNB config update failed message, switch and prepare failed message, also can finish by newly-increased message.
Embodiments of the invention two are described under the universal mobile telecommunications system (UMTS, Universal MobileTelecommunications System), carry out the flow process that Interference Control was consulted and then finished in parameter adjustment by direct interface (is example with the Iur interface).Cell 1 among this embodiment under the supposition RNC 1 has been subjected to uplink interference, and the Cell 2 of RNC 2 is a certain adjacent cells that possible cause interference to Cell 1.RNC 1 and RNC 2 can be common grand RNC or Home eNodeB, have direct interface Iur between RNC 1 and the RNC 2.This direct interface can be to be based upon being connected of RNC 1 and RNC 2; If RNC 2 is connected into core net by femto gateway, so this direct interface also can be based upon between the femto gateway of RNC 1 and RNC 2 be connected and femto gateway to the connection of RNC 2; If RNC 1 is connected into core net by femto gateway, so this direct interface also can be based upon RNC 1 to the connection of family's base-station gateway and femto gateway to the connection of RNC 2.Concrete Interference Control flow process as shown in Figure 5, mainly may further comprise the steps:
Step 501, received total wideband power (the RTWP of RNC 1 statistics Cell 1, Received TotalWideband Power), and whether the RTWP that judges Cell 1 has exceeded preset threshold, if exceed Cell 1 preset threshold, think that then Cell 1 has been subjected to uplink interference, and then execution in step 502; Otherwise, need not to carry out Interference Control.
Step 502 to 505 with embodiment one in the class of operation of step 402 to 405 seemingly, just corresponding net element eNB 1 replaces with RNC 1 herein, eNB 2 replaces with RNC 2 herein.
In addition, interference consultation parameter in the present embodiment is adjusted message can multiplexing existing information interaction message, also can carry by RELOCATION REQUEST message and adjust parameter and finish, and can also be newly-increased message in addition.Disturbing the consultation parameter adjustment to accept message can the multiplexed information interaction message, the re-positioning request response message, also can finish by newly-increased message.Disturbing consultation parameter to adjust refuse information can the mutual failed message of multiplexed information, failed message is prepared in reorientation, also can finish by newly-increased message.
For the situation that connects communication between the RNC by HNB GW, HNB GW is responsible for transmitting the interference consultation parameter and adjusts message and disturb consultation parameter to adjust message response (accept and refuse) message.And the message that HNBGW transmits can be passed through multiplexing newly-increased Home eNodeB applying portion (HNBAP, HNBApplication Part) message is finished, also can pass through Radio Access Network Application Part user adaptation layer (RUA, RANAP User Adaption) encapsulation Radio Access Network Application Part (RANAP, RadioAccess Network Application Part) message is finished, and also can finish by carrying adjustment information in the RUA message.
Embodiments of the invention three are described under the LTE system, carry out the flow process that Interference Control was consulted and then finished in parameter adjustment by the S1 interface.Cell 1 among this embodiment under the supposition eNB 1 has been subjected to uplink interference, and the Cell 2 of eNB2 is a certain adjacent cells that possible cause interference to Cell 1.ENB 1 and eNB 2 can be macro base station or Home eNodeB, set up the S1 interface between eNB 1 and eNB 2 and the core network element MME.If eNB 1 is the Home eNodeB that inserts core net by femto gateway, so this S1 interface also can be based upon between eNB 1 and the femto gateway and femto gateway to being connected between the MME; If eNB 2 is for being connected into the Home eNodeB of core net by femto gateway, so this S1 interface also can be based upon eNB 2 between family's base-station gateway and femto gateway to the connection between the MME.Concrete Interference Control flow process as shown in Figure 6, mainly may further comprise the steps:
Step 601, eNB 1 judges whether the reception interference power of Cell 1 is higher than preset threshold, if be higher than preset threshold, thinks that then Cell 1 has been subjected to uplink interference, and then execution in step 602; Otherwise, need not to carry out the control of uplink interference.
Step 602, eNB 1 sends the interference consultation parameter to the adjacent area and adjusts message according to the adjacent area list information of Cell 1.
The adjacent area is an example with Cell 2, eNB 1 sends to MME and disturbs consultation parameter to adjust message, and the consultation parameter in this message comprises: the sign of the tracking area identification TAI of the sign of eNB 1, eNB 1 (Tracking AreaIdentity), Cell 1 sign, eNB 2, the sign of TAI, the Cell 2 of eNB 2, the UE maximum transmission power adjustment information of Cell 1; After can also comprising the UE power adjustment under the Cell 1 in this message the noise rise of Cell 2 is contributed; Can also comprise UE under the Cell 1 in this message to the reference path loss of Cell 2, the minimum path loss of the Cell 2 that this can receive with the UE under the Cell 1 with reference to path loss or the mean value of path loss are represented; Effective retention time that can also comprise consultation parameter in this information.Wherein, the maximum transmission power of UE can be the absolute maximum power transmission value that the UE under the Cell 1 allows, and also can be the adjustment amount of the maximum transmission power of the UE under the current C ell 1.Noise rise contribution can calculate by following formula: make an uproar in the end of (maximum transmission power of UE-with reference to path loss)/Cell 2, and the reference path loss here is meant that UE under the Cell 1 is to the reference path loss of Cell 2.
Step 603 after MME receives and disturbs consultation parameter to adjust message, is carried out the route judgement according to the TAI of eNB 2 and the sign of eNB 2, sends to eNB 2 and disturbs consultation parameters to adjust message, and the content of message is identical with content described in the step 602.
Step 604, eNB 2 judges the adjustment parameter in the message after receiving and disturbing consultation parameter to adjust message.
If adjusting parameter is the maximum transmission power of UE, judge that then UE under the Cell 1 adjusts to whether accepting within the scope at Cell 2 of the interference that Cell 2 produced behind the maximum transmission power, the concrete method of judging is: calculate UE and adopt the noise rise contribution (or interference power) that produces behind this maximum transmission power, and judge whether this noise rise contribution (or interference power) has exceeded Cell 2 preset threshold, if exceeded Cell 2 preset threshold then refused the adjustment of UE maximum transmission power; If do not exceed, then allow the adjustment of UE maximum transmission power.
If disturb to adjust parameter and be after the adjustment of UE power, judge that then this noise rise contribution whether the accepting within the scope of Cell 2, if exceeded the scope of accepting of Cell 2, then refuses parameter adjustment to the noise rise contribution of adjacent area on every side; If do not exceed, then allow parameter adjustment.
Under the situation of refusal parameter adjustment, execution in step 605a; Under the situation that allows parameter adjustment, execution in step 605b.
Step 605a, eNB 2 send to MME and disturb consultation parameter to adjust refuse information, comprise in this message: the sign of the TAI of the sign of eNB 2, eNB 2, the sign of Cell 2, eNB 1, the TAI of eNB 1, the sign of Cell 1; The adjusting range that can also comprise Cell 2 acceptable maximum transmission power, its adjusting range can be the adjusting range of the absolute maximum transmission power of UE under the Cell 1, also can be the adjusting range of current transmit power, the scope of Cell 2 acceptable noise liftings contribution; Can also comprise the reason of consulting refusal in the message and/or wait for the time that consult next time.
Step 605b, eNB 2 send to MME and disturb the consultation parameter adjustment to accept message, comprise in this message: the sign of the TAI of the sign of eNB 2, eNB 2, the sign of Cell 2, eNB 1, the TAI of eNB 1, the sign of Cell 1.
Step 606 (606a, 606b), MME is undertaken after the route this response message being delivered to eNB 1 by the information (sign and TAI) of eNB 1 after receiving the response message of eNB 2.
Step 607, eNB 1 determines the adjustment of the maximum transmission power of its UE according to the adjacent area feedack.Thereby solved because uplink interference to the influence of uplink service, and has been avoided owing to promote riseing that adjacent area terminal power that the maximum transmission power of the terminal of self causes adjusts.
In negotiation mechanism shown in Figure 6, for the situation that is connected communication between the HeNB by HeNB GW with MME, HeNB GW is responsible for transmitting and disturbs consultation parameter adjustment message and disturb consultation parameter to adjust message response (accepting and refusal) message.
Need to prove that above-mentioned interference consultation parameter adjusts message, disturb consultation parameter to adjust message refuses/accept message, can multiplexing existing eNB configuration message transfer, MME configuration message transfer finishes, can also finish by newly-increased message.
Embodiments of the invention four are described by the Iu/Iuh interface and are carried out the flow process that Interference Control was consulted and then finished in parameter adjustment.Supposition RNC 1 and RNC 2 can be common RNC or Home eNodeB among this embodiment, set up the Iu interface between RNC 1 and RNC 2 and the core net (CN, Core Network).If RNC 1 is connected into core net by femto gateway, this Iu interface also can be to be based upon RNC 1 to be connected to the Iu interface between the CN with Iuh interface and femto gateway between the femto gateway so; If RNC 2 is connected into core net by femto gateway, so this Iu interface also comprise be based upon RNC 2 to the Iuh interface between family's base-station gateway and femto gateway to the Iu interface between the CN, wherein the interface between Home eNodeB and the femto gateway is the Iuh interface.Concrete Interference Control flow process as shown in Figure 7, mainly may further comprise the steps:
Step 701, the RTWP of RNC 1 statistics Cell 1, and judge whether the RTWP of Cell 1 has exceeded preset threshold, if exceed Cell 1 preset threshold, think that then Cell 1 has been subjected to uplink interference, and then execution in step 702; Otherwise, need not to carry out Interference Control.
Step 702 to 707 with embodiment three in the class of operation of step 602 to 607 seemingly, just corresponding net element eNB 1 replaces with RNC 1 herein, eNB 2 replaces with RNC 2 herein, HeNB GW replaces with HNB GW herein, MME replaces with CN herein, and routing iinformation wherein is by Location Area Identification (LAI, Location Area Identity), and comprise that optionally Routing Area sign indicating number (RAC, Routing Area Code) replaces TAI.
Need to prove that interference consultation parameter in the present embodiment is adjusted message can multiplexing existing direct information pass-along message, also can carry by RELOCATION REQUEST message and adjust parameter and finish, can also be newly-increased message in addition.Message is accepted in the interference parameter adjustment can multiplexing direct information pass-along message, the re-positioning request response message, also can finish by newly-increased message.Interference parameter is adjusted refuse information can multiplexing direct information pass-along message, reorientation is prepared failed message, also can be finished by newly-increased message.
For the situation that connects communication between the RNC by HNB GW, HNB GW is responsible for transmitting the interference consultation parameter and adjusts message and disturb consultation parameter to adjust message response (accept and refuse) message.And the message that HNBGW transmits can be finished by multiplexing newly-increased HNBAP message, also can encapsulate RANAP message by RUA and finish, and perhaps carries adjustment information by RUA message and finishes.
Embodiments of the invention five are described under the family base station system, and the Home eNodeB that belongs under the same family base-station gateway carries out the flow process that Interference Control was consulted and then finished in parameter adjustment.Present embodiment is that example is described with the Home eNodeB under the UMTS, and the flow process of LTE is similar.Suppose that the Cell1 that Home eNodeB H (e) NB 1 is administered has been subjected to uplink interference, the Cell 2 that H (e) NB 2 is administered is the adjacent cells that possible cause uplink interference to Cell 1.Concrete Interference Control flow process as shown in Figure 8, mainly may further comprise the steps:
Step 801, the RTWP of H (e) NB 1 statistics Cell 1, and judge whether the RTWP of Cell 1 has exceeded preset threshold, if exceed Cell 1 preset threshold, think that then Cell 1 has been subjected to uplink interference, and then execution in step 802; Otherwise, think that Cell 1 is not subjected to uplink interference, need not to carry out Interference Control.
Step 802, H (e) NB 1 sends to H (e) GW and disturbs consultation parameter to adjust message, and this message can use newly-increased HNBAP message to represent.
Comprise in the message: the sign of the sign of H (e) NB 1, the sign of Cell 1, H (e) NB 2, the sign of Cell 2, the UE maximum transmission power adjustment information under the Cell 1; After can also comprising the UE power adjustment under the Cell1 in this message the noise rise of Cell 2 is contributed; Can also comprise UE under the Cell 1 in this message to the reference path loss of Cell 2, the minimum path loss of the Cell 2 that this can receive with the UE under the Cell 1 with reference to path loss or the mean value of path loss are represented; Effective retention time that can also comprise consultation parameter in this information.Wherein, the maximum transmission power of UE can be the absolute maximum power transmission value that the UE under the Cell 1 allows, and also can be the adjustment amount of the maximum transmission power of the UE under the current C ell 1.Noise rise contribution can calculate by following formula: make an uproar in the end of (maximum transmission power of UE-with reference to path loss)/Cell 2, and the reference path loss here is meant that UE under the Cell 1 is to the reference path loss of Cell 2.For the situation that Home eNodeB is only managed a sub-district, the Home eNodeB sign can unify to be cell ID.
Step 803, H (e) NB GW judges that H (e) NB 1 and H (e) NB 2 belong to this H (e) NB GW, then sends to H (e) NB 2 and disturbs consultation parameter to adjust message.Consultation parameter in the message is identical with the described consultation parameter content of step 802.
Step 804, H (e) NB 2 adjusts parameter to the interference in the message and judges after receiving and disturbing consultation parameter to adjust message.
If adjusting parameter is the maximum transmission power of UE, judge that then UE under the Cell 1 adjusts to the interference that Cell 2 produced behind the maximum transmission power whether the accepting within the scope of Cell 2, if exceeded Cell 2 preset threshold then refuse parameter adjustment; If do not exceed, then allow parameter adjustment.
If disturb to adjust parameter and be after the adjustment of UE power, judge that then this noise rise contribution whether the accepting within the scope of Cell 2, if exceeded the scope of accepting of Cell 2, then refuses parameter adjustment to the noise rise contribution of adjacent area on every side; If do not exceed, then allow parameter adjustment.
Under the situation of refusal parameter adjustment, execution in step 805a; Under the situation that allows parameter adjustment, execution in step 805b.
Step 805a, H (e) NB 2 send to H (e) NB GW and disturb consultation parameter to adjust refuse information, comprise in this message: the sign of H (e) NB 2, the sign of Cell 2, the sign of H (e) NB 1, the sign of Cell 1; The adjusting range that can also comprise Cell 2 acceptable maximum transmission power, its adjusting range can be the adjusting range of the absolute maximum transmission power of UE under the Cell 1, also can be the adjusting range of current transmit power, the scope of Cell 2 acceptable noise liftings contribution; Can also comprise the reason of consulting refusal in the message and/or wait for the time that consult next time.For the situation that Home eNodeB is only managed a sub-district, the Home eNodeB sign can unify to be cell ID.
Step 805b, H (e) NB 2 send to H (e) NB GW and disturb the consultation parameter adjustment to accept message, comprise in this message: the sign of H (e) NB 2, the sign of Cell 2, the sign of H (e) NB 1, the sign of Cell 1.
Step 806 (806a, 806b), H (e) NB GW sends to H (e) NB 1 after receiving the response message of H (e) NB 2.
Step 807, H (e) NB 1 determines the adjustment of the maximum transmission power of its UE according to the adjacent area feedack.Thereby solved because uplink interference to the influence of uplink service, and has been avoided owing to promote riseing that adjacent area terminal power that the maximum transmission power of the terminal of self causes adjusts.
Need to prove, the interference consultation parameter that H (e) NB GW transmits is adjusted message and is disturbed consultation parameter to adjust message response (accepting and refusal) message, can finish by multiplexing HNBAP message, also can finish, can also finish by the RANAP message of RUA encapsulation by multiplexing RUA message.
The corresponding above-mentioned method of disturbing of handling through consultation, the present invention also provides a kind of system that disturbs that handles through consultation, comprising: source network element and the target network element disturbed.Wherein, the source network element that is disturbed is used for sending the interference consultation parameter to target network element and adjusts message.Target network element, be used for judging whether to accept the parameter adjustment of source network element, and returning response message to the source network element according to disturbing consultation parameter to adjust the adjustment parameter of message, concrete: when the parameter adjustment of source network element is accepted in judgement, return the adjustment of interference consultation parameter to the source network element and accept message; When judging the parameter adjustment of refusal source network element, return the interference consultation parameter to the source network element and adjust refuse information.
Adjust the maximum transmission power that can include only UE under the network element jurisdiction district, source in the parameter; Perhaps, comprising: the maximum transmission power of UE under the network element jurisdiction district, source, and the UE under the network element jurisdiction district, source is to the reference path loss of target network element jurisdiction district.Accordingly, target network element is further used for, and calculate UE and adopt the noise rise contribution that produces behind this maximum transmission power, and whether judge the noise rise contribution greater than preset threshold, if greater than, then refuse the parameter adjustment of source network element; Otherwise, accept the parameter adjustment of source network element.
Adjust in the parameter and can also include only: under the network element jurisdiction district, source after the power adjustment of UE to the noise rise contribution of target network element jurisdiction district; Accordingly, target network element is further used for, and judge and disturb the noise rise contribution of adjusting in the parameter whether greater than preset threshold, if greater than, then refuse the parameter adjustment of source network element; Otherwise, accept the parameter adjustment of source network element.
Adjust in the parameter and can also comprise: effective retention time of adjusting parameter.
The above is preferred embodiment of the present invention only, is not to be used to limit protection scope of the present invention.
Claims (18)
1. handle the method for disturbing through consultation for one kind, it is characterized in that this method comprises:
The source network element that is disturbed sends to target network element and disturbs consultation parameter to adjust message;
Described target network element judges whether to accept the parameter adjustment of described source network element, and returns response message to described source network element according to the adjustment parameter of disturbing in the consultation parameter adjustment message.
2. according to the described method of disturbing of handling through consultation of claim 1, it is characterized in that, comprise in the described adjustment parameter: the maximum transmission power of user terminal (UE) under the network element jurisdiction district, described source;
Perhaps, comprising: the maximum transmission power of UE under the network element jurisdiction district, described source, and the UE under the network element jurisdiction district, source is to the reference path loss of target network element jurisdiction district.
3. according to the described method of disturbing of handling through consultation of claim 2, it is characterized in that, described according to adjusting the parameter adjustment that parameter judges whether to accept the source network element, specifically comprise:
Described target network element is calculated UE and is adopted the noise rise contribution that produces behind the described maximum transmission power, and whether judges described noise rise contribution greater than preset threshold, if greater than, then refuse the parameter adjustment of source network element; Otherwise, accept the parameter adjustment of source network element.
4. according to the described method of handle disturbing through consultation of claim 1, it is characterized in that, comprise in the described adjustment parameter: under the network element jurisdiction district, source after the power adjustment of UE to the noise rise contribution of target network element jurisdiction district.
5. according to the described method of disturbing of handling through consultation of claim 4, it is characterized in that, described according to adjusting the parameter adjustment that parameter judges whether to accept the source network element, specifically comprise:
Whether described target network element judges the noise rise contribution of disturbing in the adjustment parameter greater than preset threshold, if greater than, then refuse the parameter adjustment of source network element; Otherwise, accept the parameter adjustment of source network element.
6. according to claim 2 or the 4 described methods of disturbing of handling through consultation, it is characterized in that, also comprise in the described adjustment parameter: effective retention time of described adjustment parameter.
7. according to each described method of disturbing of handling through consultation of claim 1 to 5, it is characterized in that described target network element is returned response message to the source network element, specifically comprises:
When described target network element is accepted the parameter adjustment of source network element in judgement, return the adjustment of interference consultation parameter to described source network element and accept message; When judging the parameter adjustment of refusal source network element, return the interference consultation parameter to described source network element and adjust refuse information.
8. according to the described method of disturbing of handling through consultation of claim 7, it is characterized in that, described interference consultation parameter is adjusted and is comprised the adjustment amount that described target network element is accepted in the refuse information, and described adjustment amount comprises: the noise contribution scope that behind power that permission is adjusted or the source network element adjustment power target network element is caused.
9. the described according to Claim 8 method of disturbing of handling through consultation is characterized in that, described interference consultation parameter is adjusted and also comprised reason that refusal is adjusted and/or the stand-by period of adjusting next time in the refuse information.
10. handle the system that disturbs through consultation for one kind, it is characterized in that this system comprises: source network element and the target network element disturbed, wherein,
The described source network element that is disturbed is used for sending the interference consultation parameter to target network element and adjusts message;
Described target network element is used for judging whether to accept the parameter adjustment of described source network element, and returning response message to described source network element according to disturbing consultation parameter to adjust the adjustment parameter of message.
11. according to the described system that disturbs that handles through consultation of claim 10, it is characterized in that, comprise the maximum transmission power of UE under the network element jurisdiction district, described source in the described adjustment parameter;
Perhaps, comprising: the maximum transmission power of UE under the network element jurisdiction district, described source, and the UE under the network element jurisdiction district, source is to the reference path loss of target network element jurisdiction district.
12. according to the described system that disturbs that handles through consultation of claim 11, it is characterized in that, described target network element is further used for, calculate UE and adopt the noise rise contribution that produces behind the described maximum transmission power, and judge that whether described noise rise contribution is greater than preset threshold, if greater than, then refuse the parameter adjustment of source network element; Otherwise, accept the parameter adjustment of source network element.
13. according to the described system that handle to disturb through consultation of claim 10, it is characterized in that, comprise in the described adjustment parameter: under the network element jurisdiction district, source after the power adjustment of UE to the noise rise contribution of target network element jurisdiction district.
14. according to the described system that disturbs that handles through consultation of claim 13, it is characterized in that described target network element is further used for, judge and disturb the noise rise contribution of adjusting in the parameter whether greater than preset threshold, if greater than, then refuse the parameter adjustment of source network element; Otherwise, accept the parameter adjustment of source network element.
15. according to claim 11 or the 13 described systems that disturb that handle through consultation, it is characterized in that, also comprise in the described adjustment parameter: effective retention time of described adjustment parameter.
16. according to each described system that disturbs that handles through consultation of claim 10 to 14, it is characterized in that described target network element is further used for, when the parameter adjustment of source network element is accepted in judgement, return the adjustment of interference consultation parameter to described source network element and accept message; When judging the parameter adjustment of refusal source network element, return the interference consultation parameter to described source network element and adjust refuse information.
17. according to the described system that disturbs that handles through consultation of claim 16, it is characterized in that, described interference consultation parameter is adjusted and is comprised the adjustment amount that described target network element is accepted in the refuse information, and described adjustment amount comprises: the noise contribution scope that behind power that permission is adjusted or the source network element adjustment power target network element is caused.
18., it is characterized in that described interference consultation parameter is adjusted and also comprised reason that refusal is adjusted and/or the stand-by period of adjusting next time in the refuse information according to the described system that disturbs that handles through consultation of claim 17.
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