CN102238556B - A kind of method and system processing interference through consultation - Google Patents
A kind of method and system processing interference through consultation Download PDFInfo
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Abstract
The invention discloses a kind of method processing interference through consultation, including: the source network element being disturbed sends interference to target network element and consults parameter adjustment message; Target network element consults the adjustment parameter in parameter adjustment message according to interference, it may be judged whether accepts the parameter adjustment of source network element, and returns response message to source network element. The invention also discloses a kind of system processing interference through consultation. By the method and system of the present invention, solve due to the uplink interference impact on uplink service in existing family base station system, and avoid the generation causing owing to promoting the maximum transmission power of the UE being disturbed community self adjacent area user terminal (UE) power adjustment soaring.
Description
Technical field
The present invention relates to the interference treatment technology in radio honeycomb communication system, particularly relate to a kind of method and system processing interference through consultation.
Background technology
It is an important problem in wireless telecommunication system that interference controls. Under community is with frequency deployment scenario, presence of intercell interference can be more prominent, it addition, the problem that in alien frequencies situation, minizone there is also adjacent frequency interference. The method solving interference is different according to the different producing cause of interference, for instance: processing the interference of cell edge, typical method adopts channeling technology exactly. The common interference method and making rational planning for of solving can be passed through for macro base station and accomplish that what interference eliminated minimizes. However as the development of wireless technology, introducing femto (femto) community, the introducing of femto community increases the complexity of wireless network so that the situation of interference is more prominent. Home eNodeB is a kind of typical femto community, it is a kind of base station small-sized, lower powered, it is deployed in the indoor place such as family and office, Main Function is to provide the user with higher service rate and reduce the expense used required for high rate services, making up 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, HomeevolvedNodeB) of traditional-family base station (HNB, HomeNodeB) and evolution, referred to as H (e) NB. The network structure of HeNB system as it is shown in figure 1, the network structure of HNB system as shown in Figure 2. Femtocell user is by H (e) NB Access Network (AN, AccessNetwork) core net network it is connected to, wherein, H (e) NBAN is collectively constituted by H (e) NB and H (e) NB gateway (GW, Gateway).And for HeNB system, HeNB can not pass through HeNBGW and directly connect with Mobility Management Entity (MME, MobilityManagementEntity).
The deployment of H (e) NB increases the interference complexity of wireless communication system. Due to H (e) NB Numerous, therefore frequency, macrocell and other contiguous H (e) NB cannot be demarcated completely, and H (e) NB is more under the coverage of macrocell. Interference between community can be divided into uplink interference and descending interference two kinds. Wherein, uplink interference has following several scene: the HUE (HomeUE) under H (e) NB to the HUE under the interference of macrocell (MacroCell), Home eNodeB to the interference to Home eNodeB or other macrocells of the MUE (MacroUE) under the interference of other Home eNodeB, macrocell. Wherein, HUE is the UE being under macrocell service of UE, the MUE under Home eNodeB service.
When H (e) NB or macrocell are subject to uplink interference, the terminal uplink signal quality that community receives will be deteriorated. The common method solving this problem is the modulation system of up use lower-order, such as: Adaptive Modulation and Coding (AMC, AdaptiveModulationandCoding) or presence of intercell interference control (ICIC, Inter-CellInterferenceControl), or improve terminal transmitting power.
But, adopt the method improving terminal transmission power will cause certain problem. Macro base station for HUE, MNB caused uplink interference, as it is shown on figure 3, when macrocell is produced uplink interference by HUE, will adjust the maximum transmission power of the MUE under macrocell; But owing to MUE distance Home eNodeB is closer, the therefore lifting of the uplink transmission power of MUE, it would be possible to produce the uplink interference to HNB. Then, HNB can adjust again the maximum transmission power of the HUE under it, so repeatedly, causes a kind of problem being called power ramp, and power ramp should be avoided in uplink interference solution process.
Summary of the invention
In view of this, present invention is primarily targeted at a kind of method and system processing interference through consultation of offer, to solve the uplink interference problem in existing H (e) NB system.
For reaching above-mentioned purpose, the technical scheme is that and be achieved in that:
The invention provides a kind of method processing interference through consultation, the method includes:
The source network element being disturbed sends interference to target network element and consults parameter adjustment message;
Described target network element consults the adjustment parameter in parameter adjustment message according to interference, it may be judged whether accepts the parameter adjustment of described source network element, and returns response message to described source network element.
Described adjustment parameter includes: the maximum transmission power of user terminal (UE) under network element jurisdiction district, described source;
Or, including the maximum transmission power of UE under network element jurisdiction district, described source, and the UE under network element jurisdiction district, source is to the reference path loss of target network element jurisdiction district.
Described according to adjust parameter judge whether to accept the parameter adjustment of source network element, specifically include:
Described target network element calculates the noise rise contribution produced after UE adopts described maximum transmission power, and judges that whether the contribution of described noise rise is more than the threshold value set, if it is greater, then the parameter adjustment of refusal source network element; Otherwise, the parameter adjustment of source network element is accepted.
Described adjustment parameter includes: after the power adjustment of UE, the noise rise of target network element jurisdiction district is contributed under network element jurisdiction district, source.
Described according to adjust parameter judge whether to accept the parameter adjustment of source network element, specifically include:
Described target network element judges that interference adjusts the noise rise in parameter and whether contributes more than the threshold value set, if it is greater, then the parameter adjustment of refusal source network element;Otherwise, the parameter adjustment of source network element is accepted.
Described adjustment parameter also includes: described adjustment parameter be effectively retained the time.
Described target network element returns response message to source network element, specifically includes:
Described target network element, when judging the parameter adjustment accepting source network element, returns interference negotiation parameter adjustment to described source network element and accepts message; When judging the parameter adjustment of refusal source network element, return interference to described source network element and consult parameter adjustment refuse information.
Described interference is consulted parameter adjustment refuse information and is included the adjustment amount that described target network element accepts, and described adjustment amount includes: allow the noise contribution scope that target network element is caused after adjusting power by the power adjusted or source network element.
Described interference is consulted also to include the reason that refusal adjusts and/or the waiting time adjusted next time in parameter adjustment refuse information.
Present invention also offers a kind of system processing interference through consultation, this system includes: the source network element being disturbed and target network element, wherein,
The described source network element being disturbed, consults parameter adjustment message for sending interference to target network element;
Described target network element, for consulting the adjustment parameter in parameter adjustment message, it may be judged whether accept the parameter adjustment of described source network element, and return response message to described source network element according to interference.
Described adjustment parameter includes the maximum transmission power of UE under network element jurisdiction district, described source;
Or, including the maximum transmission power of UE under network element jurisdiction district, described source, and the UE under 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 calculates the noise rise contribution produced after UE adopts described maximum transmission power, and judges that whether the contribution of described noise rise is more than the threshold value set, if it is greater, then the parameter adjustment of refusal source network element; Otherwise, the parameter adjustment of source network element is accepted.
Described adjustment parameter includes: after the power adjustment of UE, the noise rise of target network element jurisdiction district is contributed under network element jurisdiction district, source.
Described target network element is further used for, it is judged that whether interference adjusts the noise rise contribution in parameter more than the threshold value set, if it is greater, then the parameter adjustment of refusal source network element; Otherwise, the parameter adjustment of source network element is accepted.
Described adjustment parameter also includes: described adjustment parameter be effectively retained the time.
Described target network element is further used for, and when judging the parameter adjustment accepting source network element, returns interference negotiation parameter adjustment to described source network element and accepts message; When judging the parameter adjustment of refusal source network element, return interference to described source network element and consult parameter adjustment refuse information.
Described interference is consulted parameter adjustment refuse information and is included the adjustment amount that described target network element accepts, and described adjustment amount includes: allow the noise contribution scope that target network element is caused after adjusting power by the power adjusted or source network element.
Described interference is consulted also to include the reason that refusal adjusts and/or the waiting time adjusted next time in parameter adjustment refuse information.
A kind of method and system processing interference through consultation provided by the present invention, the source network element being disturbed sends interference to target network element and consults parameter adjustment message; Target network element consults the adjustment parameter in parameter adjustment message according to interference, it may be judged whether accepts the parameter adjustment of source network element, and returns response message to source network element. By the present invention, solve due to the uplink interference impact on uplink service in existing H (e) NB system, and avoid the generation causing owing to promoting the maximum transmission power of the UE being disturbed community self adjacent area UE power adjustment soaring.
Accompanying drawing explanation
Fig. 1 is the schematic network structure of HeNB system in prior art;
Fig. 2 is the schematic network structure of HNB system in prior art;
Fig. 3 is the uplink interference schematic diagram in existing H (e) NB system;
Fig. 4 is the method flow diagram processing interference through consultation of the embodiment of the present invention one;
Fig. 5 is the method flow diagram processing interference through consultation of the embodiment of the present invention two;
Fig. 6 is the method flow diagram processing interference through consultation of the embodiment of the present invention three;
Fig. 7 is the method flow diagram processing interference through consultation of the embodiment of the present invention four;
Fig. 8 is the method flow diagram processing interference through consultation of the embodiment of the present invention five.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the technical solution of the present invention is further elaborated.
A kind of method processing interference through consultation provided by the present invention, including: the source network element being disturbed sends interference to target network element and consults parameter adjustment message; Target network element consults the adjustment parameter in parameter adjustment message according to interference, it may be judged whether accepts the parameter adjustment of source network element, and returns response message to source network element. When judging the parameter adjustment accepting source network element, return interference negotiation parameter adjustment to source network element and accept message; When judging the parameter adjustment of refusal source network element, return interference to source network element and consult parameter adjustment refuse information.
Wherein, adjustment parameter can only include the maximum transmission power of UE under network element jurisdiction district, source; Or, including the maximum transmission power of UE under network element jurisdiction district, source, and the UE under network element jurisdiction district, source is to the reference path loss of target network element jurisdiction district. Accordingly, target network element calculates the noise rise contribution produced after UE adopts this maximum transmission power, and judges that whether noise rise contribution is more than the threshold value set, if it is greater, then the parameter adjustment of refusal source network element; Otherwise, the parameter adjustment of source network element is accepted.
Adjust and after the power that can also only include UE under network element jurisdiction district, source in parameter adjusts, the noise rise of target network element jurisdiction district is contributed; Accordingly, target network element judges that interference adjusts the noise rise in parameter and whether contributes more than the threshold value set, if it is greater, then the parameter adjustment of refusal source network element; Otherwise, the parameter adjustment of source network element is accepted.
It addition, above-mentioned adjustment parameter can also include adjust parameter be effectively retained the time.
When target network element returns interference negotiation parameter adjustment refuse information, this message includes the adjustment amount that target network element accepts, and this adjustment amount includes: allow the noise contribution scope that target network element is caused after adjusting power by the power adjusted or source network element; The reason that refusal adjusts and/or the waiting time adjusted next time can also be included.
It is further elaborated on above by the method handling interference through consultation below in conjunction with specific embodiment.
Embodiments of the invention one describe under Long Term Evolution (LTE, LongTermEvolution) system, carry out parameter adjustment negotiation by direct interface and then complete the flow process that interference controls. The Cell1 supposed under eNB1 in this embodiment receives uplink interference, and the Cell2 of eNB2 is a certain adjacent cell possible Cell1 is interfered. ENB1 and eNB2 can be macro base station or Home eNodeB, and the direct interface existed between eNB1 and eNB2 is that X2 interface illustrates. This direct interface can be built upon in the connection of eNB1 and eNB2; If eNB2 is the Home eNodeB by femto gateway core network access, then this direct interface can also be built upon the connection between the femto gateway of eNB1 and eNB2 and femto gateway to the connection of eNB2;If eNB1 is the Home eNodeB by femto gateway core network access, then this direct interface can also be built upon eNB1 to the connection of femto gateway and femto gateway to the connection of eNB2 on. Concrete interference control flow, as shown in Figure 4, mainly comprises the steps that
Step 401, eNB1 judges that whether the reception jamming power of Cell1 is higher than the threshold value set, if above the threshold value set, then it is assumed that Cell1 receives uplink interference, and then performs step 402; Otherwise, it is not necessary to carry out the control of uplink interference.
Step 402, the eNB1 adjacent area list information according to Cell1, send interference to adjacent area and consult parameter adjustment message.
Sending interference for Cell2, eNB1 to eNB2 for adjacent area list information and consult parameter adjustment message, the negotiation parameter in this message includes: the UE maximum transmission power adjustment information under the mark of Cell1, the mark of Cell2, Cell1; This message can also include after the UE power under Cell1 adjusts, the noise rise of Cell2 is contributed; Can also including the reference path loss of UE to Cell2 under Cell1 in this message, this reference path loss can represent by the meansigma methods of the minimum path loss of the Cell2 received of the UE under Cell1 or path loss; What can also include negotiation parameter in this information is effectively retained the time. Wherein, the maximum transmission power of UE can be UE under the Cell1 absolute maximum power transmission value allowed, it is also possible to be the adjustment amount of the maximum transmission power of UE under current Cell1. Noise rise contribution can be passed through below equation calculating and obtain: making an uproar in the end of (maximum transmission power of UE-reference path loss)/Cell2, reference path loss here refers to the reference path loss of UE to the Cell2 under Cell1. Wherein assume to make an uproar eNB1 precognition in the end of Cell2.
Step 403, the adjustment parameter in message is judged after receiving interference negotiation parameter adjustment message by eNB2.
If adjusting the maximum transmission power that parameter is UE, then judge that whether the Cell2 interference produced is accepted within scope at Cell2 after adjusting maximum transmission power by the UE under Cell1, the method of concrete judgement is: calculate noise rise contribution (or jamming power) produced after UE adopts this maximum transmission power, and judge that whether this noise rise contribution (or jamming power) is beyond the Cell2 threshold value set, if beyond the Cell2 threshold value set, refusing the adjustment of UE maximum transmission power; Without exceeding, then allow the adjustment of UE maximum transmission power.
If it is after UE power adjusts, the noise rise of adjacent area around contribute that interference adjusts parameter, then judging that this noise rise contributes whether accepting within scope at Cell2, if accepting scope beyond Cell2, then refusing parameter adjustment; Without exceeding, then allow parameter adjustment.
When refusing parameter adjustment, perform step 404a; When allowing parameter adjustment, perform step 404b.
Step 404a, eNB2 to eNB1 send interference consult parameter adjustment refuse information, this message includes: the mark of Cell1, Cell2 mark; The adjusting range of the acceptable maximum transmission power of Cell2 can also be included, its adjusting range can be the adjusting range of the UE absolute maximum transmitting power under Cell1, it is also possible to be the scope of the adjusting range of current transmitting power, the acceptable noise rise contribution of Cell2; Message can also include the reason consulting refusal and/or the time waiting negotiation next time.
Step 404b, eNB2 send interference negotiation parameter adjustment to eNB1 and accept message, and this message includes the mark of the mark of Cell1, Cell2.
Step 405, eNB1, according to adjacent area feedack, determines the adjustment of the maximum transmission power of its UE. Thus solving due to the uplink interference impact on uplink service, and the adjacent area terminal power avoiding the maximum transmission power of terminal owing to promoting self and causing adjust soaring.
In the negotiation mechanism shown in Fig. 4, during for connecting communication by HeNBGW between HeNB, HeNBGW is responsible for retransmitted jamming negotiation parameter adjustment message and parameter adjustment message response (accepting and refusal) message is consulted in interference.
It should be noted that, more than interference consult parameter adjustment message can the existing eNB configuration update message of multiplexing, load information (LoadInformation) message, adjustment parameter can also be carried by handover request message to complete, it can in addition contain be newly-increased message. Interference consult parameter adjustment message accept message can multiplexing eNB config update response message, handover request ack message, it is also possible to completed by newly-increased message. Interference consult parameter adjustment message refuse information can multiplexing eNB config update failed message, switching prepare failed message, it is also possible to completed by newly-increased message.
Embodiments of the invention two describe UMTS (UMTS, UniversalMobileTelecommunicationsSystem), under, carry out parameter adjustment negotiation by direct interface (for Iur interface) and then complete the flow process that interference controls. The Cell1 supposed under RNC1 in this embodiment receives uplink interference, and the Cell2 of RNC2 is a certain adjacent cell possible Cell1 is interfered. RNC1 and RNC2 can be common grand RNC or Home eNodeB, there is direct interface Iur between RNC1 and RNC2. This direct interface can be built upon in the connection of RNC1 and RNC2; If RNC2 is connected into core net by femto gateway, then this direct interface can also be built upon the connection between the femto gateway of RNC1 and RNC2 and femto gateway to the connection of RNC2; If RNC1 is connected into core net by femto gateway, then this direct interface can also be built upon RNC1 to the connection of femto gateway and femto gateway to the connection of RNC2 on. Concrete interference control flow, as it is shown in figure 5, mainly comprise the steps that
Step 501, RNC1 adds up the received total wideband power (RTWP of Cell1, ReceivedTotalWidebandPower), and judge that the RTWP of Cell1 is whether beyond the threshold value set, if beyond the Cell1 threshold value set, then think that Cell1 receives uplink interference, and then perform step 502; Otherwise, it is not necessary to carry out interference control.
Step 502 is similar with the operation of the step 402 in embodiment one to 405 to 505, and simply corresponding network element eNB1 replaces with RNC1, eNB2 herein and replaces with RNC2 herein.
It addition, interference in the present embodiment consult parameter adjustment message can the existing information interaction message of multiplexing, adjustment parameter can also be carried by RELOCATION REQUEST message and complete, it can in addition contain be newly-increased message. Interference consult parameter adjustment accept message can multiplexed information interaction message, re-positioning request response message, it is also possible to completed by newly-increased message. Interference consult parameter adjustment refuse information can the mutual failed message of multiplexed information, reorientation prepare failed message, it is also possible to completed by newly-increased message.
When connecting communication by HNBGW between RNC, HNBGW is responsible for retransmitted jamming negotiation parameter adjustment message and parameter adjustment message response (accepting and refusal) message is consulted in interference.And the Home eNodeB application part (HNBAP that the message of HNBGW forwarding can be increased newly by multiplexing, HNBApplicationPart) message completes, Radio Access Network Application Part user adaptation layer (RUA can also be passed through, RANAPUserAdaption) encapsulation Radio Access Network Application Part (RANAP, RadioAccessNetworkApplicationPart) message completes, it is also possible to complete by carrying adjustment information in RUA message.
Embodiments of the invention three describe under LTE system, carry out parameter adjustment negotiation by S1 interface and then complete the flow process that interference controls. The Cell1 supposed under eNB1 in this embodiment receives uplink interference, and the Cell2 of eNB2 is a certain adjacent cell possible Cell1 is interfered. ENB1 and eNB2 can be macro base station or Home eNodeB, sets up S1 interface between eNB1 and eNB2 and core network element MME. If eNB1 is the Home eNodeB by femto gateway core network access, then this S1 interface can also be built upon between eNB1 and femto gateway and femto gateway is to the connection between MME; If eNB2 is the Home eNodeB being connected into core net by femto gateway, then this S1 interface can also be built upon eNB2 between femto gateway and femto gateway to the connection between MME. Concrete interference control flow, as shown in Figure 6, mainly comprises the steps that
Step 601, eNB1 judges that whether the reception jamming power of Cell1 is higher than the threshold value set, if above the threshold value set, then it is assumed that Cell1 receives uplink interference, and then performs step 602; Otherwise, it is not necessary to carry out the control of uplink interference.
Step 602, the eNB1 adjacent area list information according to Cell1, send interference to adjacent area and consult parameter adjustment message.
Adjacent area is for Cell2, eNB1 to MME send interference consult parameter adjustment message, the negotiation parameter in this message includes: the mark of eNB1, tracking area identification TAI (TrackingAreaIdentity), the Cell1 mark of eNB1, the mark of TAI, Cell2 of the mark of eNB2, eNB2, Cell1 UE maximum transmission power adjustment information; This message can also include after the UE power under Cell1 adjusts, the noise rise of Cell2 is contributed; Can also including the reference path loss of UE to Cell2 under Cell1 in this message, this reference path loss can represent by the meansigma methods of the minimum path loss of the Cell2 received of the UE under Cell1 or path loss; What can also include negotiation parameter in this information is effectively retained the time. Wherein, the maximum transmission power of UE can be UE under the Cell1 absolute maximum power transmission value allowed, it is also possible to be the adjustment amount of the maximum transmission power of UE under current Cell1. Noise rise contribution can be passed through below equation calculating and obtain: making an uproar in the end of (maximum transmission power of UE-reference path loss)/Cell2, reference path loss here refers to the reference path loss of UE to the Cell2 under Cell1.
Step 603, MME receives interference to be consulted after parameter adjustment message, carries out route according to the mark of TAI and eNB2 of eNB2 and judges, sends interference to eNB2 and consults parameter adjustment message, and content described in the content of message and step 602 is identical.
Step 604, the adjustment parameter in message is judged after receiving interference negotiation parameter adjustment message by eNB2.
If adjusting the maximum transmission power that parameter is UE, then judge that whether the Cell2 interference produced is accepted within scope at Cell2 after adjusting maximum transmission power by the UE under Cell1, the method of concrete judgement is: calculate noise rise contribution (or jamming power) produced after UE adopts this maximum transmission power, and judge that whether this noise rise contribution (or jamming power) is beyond the Cell2 threshold value set, if beyond the Cell2 threshold value set, refusing the adjustment of UE maximum transmission power;Without exceeding, then allow the adjustment of UE maximum transmission power.
If it is after UE power adjusts, the noise rise of adjacent area around contribute that interference adjusts parameter, then judging that this noise rise contributes whether accepting within scope at Cell2, if accepting scope beyond Cell2, then refusing parameter adjustment; Without exceeding, then allow parameter adjustment.
When refusing parameter adjustment, perform step 605a; When allowing parameter adjustment, perform step 605b.
Step 605a, eNB2 send interference to MME and consult parameter adjustment refuse information, and this message includes: the mark of eNB2, the mark of TAI, Cell2 of eNB2, the mark of eNB1, eNB1 the mark of TAI, Cell1; The adjusting range of the acceptable maximum transmission power of Cell2 can also be included, its adjusting range can be the adjusting range of the UE absolute maximum transmitting power under Cell1, it is also possible to be the scope of the adjusting range of current transmitting power, the acceptable noise rise contribution of Cell2; Message can also include the reason consulting refusal and/or the time waiting negotiation next time.
Step 605b, eNB2 send interference to MME to be consulted parameter adjustment and accepts message, and this message includes: the mark of eNB2, the mark of TAI, Cell2 of eNB2, the mark of eNB1, eNB1 the mark of TAI, Cell1.
Step 606 (606a, 606b), this response message is delivered to eNB1 after being route by the information (mark and TAI) of eNB1 after receiving the response message of eNB2 by MME.
Step 607, eNB1, according to adjacent area feedack, determines the adjustment of the maximum transmission power of its UE. Thus solving due to the uplink interference impact on uplink service, and the adjacent area terminal power avoiding the maximum transmission power of terminal owing to promoting self and causing adjust soaring.
In the negotiation mechanism shown in Fig. 6, during for connecting communication by HeNBGW and MME between HeNB, HeNBGW is responsible for retransmitted jamming negotiation parameter adjustment message and parameter adjustment message response (accepting and refusal) message is consulted in interference.
It should be noted that parameter adjustment message is consulted in above-mentioned interference, interference is consulted parameter adjustment message and refused/accept message, it is possible to multiplexing existing eNB configuration transmission message, MME configuration transmission message complete, it is also possible to completed by newly-increased message.
Embodiments of the invention four describe and carry out parameter adjustment negotiation by Iu/Iuh interface and then complete the flow process that interference controls. This embodiment supposing, RNC1 and RNC2 can be common RNC or Home eNodeB, sets up Iu interface between RNC1 and RNC2 Yu core net (CN, CoreNetwork). If RNC1 is connected into core net by femto gateway, then this Iu interface can also be built upon the Iuh interface between RNC1 with femto gateway and femto gateway and be connected to the Iu interface between CN; If RNC2 is connected into core net by femto gateway, so this Iu interface also include being based upon RNC2 to the Iuh interface between femto gateway and femto gateway to CN between Iu interface, wherein the interface between Home eNodeB and femto gateway is Iuh interface. Concrete interference control flow, as it is shown in fig. 7, mainly comprise the steps that
Step 701, RNC1 adds up the RTWP of Cell1, and judges that the RTWP of Cell1 is whether beyond the threshold value set, if beyond the Cell1 threshold value set, then it is assumed that Cell1 receives uplink interference, and then performs step 702;Otherwise, it is not necessary to carry out interference control.
Step 702 is similar with the operation of the step 602 in embodiment three to 607 to 707, simply corresponding network element eNB1 replaces with RNC1 herein, eNB2 replaces with RNC2 herein, HeNBGW replaces with HNBGW herein, MME replaces with CN herein, and routing iinformation therein is by Location Area Identification (LAI, LocationAreaIdentity), and optionally include Routing Area code (RAC, RoutingAreaCode) and replace TAI.
It should be noted that interference in the present embodiment consult parameter adjustment message can the existing direct information transmission message of multiplexing, adjustment parameter can also be carried by RELOCATION REQUEST message and complete, it can in addition contain be newly-increased message. Interference parameter adjustment accepts message can transmit message, re-positioning request response message by multiplexing direct information, it is also possible to completed by newly-increased message. Interference parameter is adjusted refuse information and can transmit message, reorientation preparation failed message, can also be completed by newly-increased message by multiplexing direct information.
When connecting communication by HNBGW between RNC, HNBGW is responsible for retransmitted jamming negotiation parameter adjustment message and parameter adjustment message response (accepting and refusal) message is consulted in interference. And the message that HNBGW forwards can be completed by the HNBAP message that multiplexing is newly-increased, it is also possible to encapsulate RANAP message by RUA and complete, or carry adjustment information by RUA message and complete.
Embodiments of the invention five describe under family base station system, belong to the Home eNodeB under the same family base-station gateway and carry out parameter adjustment negotiation and then complete the flow process that interference controls. The present embodiment is described for the Home eNodeB under UMTS, and the flow process of LTE is similar. Assuming that the Cell1 that Home eNodeB H (e) NB1 administers receives uplink interference, the Cell2 that H (e) NB2 administers is the adjacent cell possible Cell1 is caused uplink interference. Concrete interference control flow, as shown in Figure 8, mainly comprises the steps that
Step 801, H (e) NB1 adds up the RTWP of Cell1, and judges that the RTWP of Cell1 is whether beyond the threshold value set, if beyond the Cell1 threshold value set, then it is assumed that Cell1 receives uplink interference, and then performs step 802; Otherwise it is assumed that Cell1 is not subject to uplink interference, it is not necessary to carry out interference control.
Step 802, H (e) NB1 sends interference to H (e) GW and consults parameter adjustment message, and this message can use newly-increased HNBAP message to represent.
Message includes: the UE maximum transmission power adjustment information under the mark of H (e) NB1, the mark of Cell1, the mark of H (e) NB2, the mark of Cell2, Cell1; This message can also include after the UE power under Cell1 adjusts, the noise rise of Cell2 is contributed; Can also including the reference path loss of UE to Cell2 under Cell1 in this message, this reference path loss can represent by the meansigma methods of the minimum path loss of the Cell2 received of the UE under Cell1 or path loss; What can also include negotiation parameter in this information is effectively retained the time. Wherein, the maximum transmission power of UE can be UE under the Cell1 absolute maximum power transmission value allowed, it is also possible to be the adjustment amount of the maximum transmission power of UE under current Cell1. Noise rise contribution can be passed through below equation calculating and obtain: making an uproar in the end of (maximum transmission power of UE-reference path loss)/Cell2, reference path loss here refers to the reference path loss of UE to the Cell2 under Cell1. When Home eNodeB only manages a community, Home eNodeB mark can be unified as cell ID.
Step 803, H (e) NBGW judges that H (e) NB1 and H (e) NB2 belongs to this H (e) NBGW, then send interference to H (e) NB2 and consult parameter adjustment message.Negotiation parameter in message is identical with the negotiation content of parameter described by step 802.
Step 804, the interference in message is adjusted parameter and judges after receiving interference negotiation parameter adjustment message by H (e) NB2.
If adjusting parameter is the maximum transmission power of UE, then judge that the UE under Cell1 adjusts to the Cell2 interference produced whether accepting within scope at Cell2 after maximum transmission power, if beyond the threshold value of Cell2 setting, refusing parameter adjustment; Without exceeding, then allow parameter adjustment.
If it is after UE power adjusts, the noise rise of adjacent area around contribute that interference adjusts parameter, then judging that this noise rise contributes whether accepting within scope at Cell2, if accepting scope beyond Cell2, then refusing parameter adjustment; Without exceeding, then allow parameter adjustment.
When refusing parameter adjustment, perform step 805a; When allowing parameter adjustment, perform step 805b.
Step 805a, H (e) NB2 to H (e) NBGW send interference consult parameter adjustment refuse information, this message includes: the mark of H (e) NB2, the mark of Cell2, the mark of H (e) NB1, Cell1 mark; The adjusting range of the acceptable maximum transmission power of Cell2 can also be included, its adjusting range can be the adjusting range of the UE absolute maximum transmitting power under Cell1, it is also possible to be the scope of the adjusting range of current transmitting power, the acceptable noise rise contribution of Cell2; Message can also include the reason consulting refusal and/or the time waiting negotiation next time. When Home eNodeB only manages a community, Home eNodeB mark can be unified as cell ID.
Step 805b, H (e) NB2 to H (e) NBGW send interference consult parameter adjustment accept message, this message includes: the mark of H (e) NB2, the mark of Cell2, the mark of H (e) NB1, Cell1 mark.
Step 806 (806a, 806b), H (e) NBGW is sent to H (e) NB1 after receiving the response message of H (e) NB2.
Step 807, H (e) NB1, according to adjacent area feedack, determines the adjustment of the maximum transmission power of its UE. Thus solving due to the uplink interference impact on uplink service, and the adjacent area terminal power avoiding the maximum transmission power of terminal owing to promoting self and causing adjust soaring.
It should be noted that, parameter adjustment message is consulted in the interference of H (e) NBGW transmission and parameter adjustment message response (accepting and refusal) message is consulted in interference, can be completed by multiplexing HNBAP message, can also be completed by multiplexing RUA message, it is also possible to completed by the RUA RANAP message encapsulated.
Correspondence, above by the method handling interference through consultation, present invention also offers a kind of system processing interference through consultation, including: the source network element being disturbed and target network element. Wherein, the source network element being disturbed, consult parameter adjustment message for sending interference to target network element. Target network element, for consulting the adjustment parameter in parameter adjustment message according to interference, it may be judged whether accept the parameter adjustment of source network element, and return response message to source network element, concrete: when judging the parameter adjustment accepting source network element, return interference negotiation parameter adjustment to source network element and accept message; When judging the parameter adjustment of refusal source network element, return interference to source network element and consult parameter adjustment refuse information.
Adjust in parameter and can only include the maximum transmission power of UE under network element jurisdiction district, source;Or, including the maximum transmission power of UE under network element jurisdiction district, source, and the UE under 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 calculates the noise rise contribution produced after UE adopts this maximum transmission power, and judges that whether noise rise contribution is more than the threshold value set, if it is greater, then the parameter adjustment of refusal source network element; Otherwise, the parameter adjustment of source network element is accepted.
Adjust in parameter and can also only include: after the power adjustment of UE, the noise rise of target network element jurisdiction district is contributed under network element jurisdiction district, source; Accordingly, target network element is further used for, it is judged that whether interference adjusts the noise rise contribution in parameter more than the threshold value set, if it is greater, then the parameter adjustment of refusal source network element; Otherwise, the parameter adjustment of source network element is accepted.
Adjust in parameter and can also include: what adjust parameter is effectively retained the time.
The above, be only presently preferred embodiments of the present invention, is not intended to limit protection scope of the present invention.
Claims (12)
1. the method processing interference through consultation, it is characterised in that the method includes:
The source network element being disturbed sends interference to target network element and consults parameter adjustment message;
Described target network element consults the adjustment parameter in parameter adjustment message according to interference, it may be judged whether accept the parameter adjustment of described source network element, and when judging the parameter adjustment accepting source network element, consults parameter adjustment to the return interference of described source network element and accept message; When judging the parameter adjustment of refusal source network element, return interference to described source network element and consult parameter adjustment refuse information;
Described adjustment parameter includes: the maximum transmission power of user terminal UE under network element jurisdiction district, described source; Or, including the maximum transmission power of UE under network element jurisdiction district, described source, and the UE under network element jurisdiction district, source is to the reference path loss of target network element jurisdiction district;
Described adjustment parameter includes: after the power adjustment of UE, the noise rise of target network element jurisdiction district is contributed under network element jurisdiction district, source.
2. the method processing interference according to claim 1 through consultation, it is characterised in that when described adjustment parameter includes the maximum transmission power of user terminal UE under network element jurisdiction district, described source; Or, including the maximum transmission power of UE under network element jurisdiction district, described source, and the UE under network element jurisdiction district, source to the reference path loss of target network element jurisdiction district time, described judge whether to accept the parameter adjustment of source network element according to adjusting parameter, specifically include:
Described target network element calculates the noise rise contribution produced after UE adopts described maximum transmission power, and judges that whether the contribution of described noise rise is more than the threshold value set, if it is greater, then the parameter adjustment of refusal source network element; Otherwise, the parameter adjustment of source network element is accepted.
3. the method processing interference according to claim 1 through consultation, it is characterized in that, when described adjustment parameter includes after the power adjustment of UE under network element jurisdiction district, source, the noise rise of target network element jurisdiction district being contributed, described according to adjust parameter judge whether to accept the parameter adjustment of source network element, specifically include:
Described target network element judges that interference adjusts the noise rise in parameter and whether contributes more than the threshold value set, if it is greater, then the parameter adjustment of refusal source network element; Otherwise, the parameter adjustment of source network element is accepted.
4. the method processing interference according to claim 1 through consultation, it is characterised in that also include in described adjustment parameter: described adjustment parameter be effectively retained the time.
5. the method processing interference according to claim 1 through consultation, it is characterized in that, described interference is consulted parameter adjustment refuse information and is included the adjustment amount that described target network element accepts, and described adjustment amount includes: allow the noise contribution scope that target network element is caused after adjusting power by the power adjusted or source network element.
6. the method processing interference according to claim 5 through consultation, it is characterised in that described interference is consulted also to include the reason that refusal adjusts and/or the waiting time adjusted next time in parameter adjustment refuse information.
7. the system processing interference through consultation, it is characterised in that this system includes: the source network element being disturbed and target network element, wherein,
The described source network element being disturbed, consults parameter adjustment message for sending interference to target network element;
Described target network element, for consulting the adjustment parameter in parameter adjustment message according to interference, judge whether to accept the parameter adjustment of described source network element, and when judging the parameter adjustment accepting source network element, return interference negotiation parameter adjustment to described source network element and accept message; When judging the parameter adjustment of refusal source network element, return interference to described source network element and consult parameter adjustment refuse information;
Described adjustment parameter includes: the maximum transmission power of UE under network element jurisdiction district, described source; Or, including the maximum transmission power of UE under network element jurisdiction district, described source, and the UE under network element jurisdiction district, source is to the reference path loss of target network element jurisdiction district;
Described adjustment parameter includes: after the power adjustment of UE, the noise rise of target network element jurisdiction district is contributed under network element jurisdiction district, source.
8. process the system of interference according to claim 7 through consultation, it is characterised in that when described adjustment parameter includes the maximum transmission power of user terminal UE under network element jurisdiction district, described source; Or, including the maximum transmission power of UE under network element jurisdiction district, described source, and the UE under network element jurisdiction district, source to the reference path loss of target network element jurisdiction district time, described target network element is further used for, calculate the noise rise contribution produced after UE adopts described maximum transmission power, and judge that whether the contribution of described noise rise is more than the threshold value set, if it is greater, then the parameter adjustment of refusal source network element; Otherwise, the parameter adjustment of source network element is accepted.
9. process the system of interference according to claim 8 through consultation, it is characterized in that, when described adjustment parameter includes after the power adjustment of UE under network element jurisdiction district, source, the noise rise of target network element jurisdiction district being contributed, described target network element is further used for, judge that interference adjusts the noise rise in parameter and whether contributes more than the threshold value set, if it is greater, then the parameter adjustment of refusal source network element; Otherwise, the parameter adjustment of source network element is accepted.
10. process the system of interference according to claim 7 through consultation, it is characterised in that described adjustment parameter also includes: described adjustment parameter be effectively retained the time.
11. process the system of interference according to claim 7 through consultation, it is characterized in that, described interference is consulted parameter adjustment refuse information and is included the adjustment amount that described target network element accepts, and described adjustment amount includes: allow the noise contribution scope that target network element is caused after adjusting power by the power adjusted or source network element.
12. process the system of interference according to claim 11 through consultation, it is characterised in that described interference is consulted also to include the reason that refusal adjusts and/or the waiting time adjusted next time in parameter adjustment refuse information.
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| CN101257371A (en) * | 2008-04-09 | 2008-09-03 | 中兴通讯股份有限公司 | Method and device for processing wireless communication uplink grouping scheduling |
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