CN101364826B - Integrated realizing method, system and base station for macrodiversity incorporating and interference control - Google Patents

Integrated realizing method, system and base station for macrodiversity incorporating and interference control Download PDF

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Publication number
CN101364826B
CN101364826B CN2007100757045A CN200710075704A CN101364826B CN 101364826 B CN101364826 B CN 101364826B CN 2007100757045 A CN2007100757045 A CN 2007100757045A CN 200710075704 A CN200710075704 A CN 200710075704A CN 101364826 B CN101364826 B CN 101364826B
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base station
cell base
service cell
mdc
service
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CN101364826A (en
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孙亚飞
李荣强
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Abstract

The inventive embodiment provides a comprehensive implementation method of macro-diversity combining and interference control, a system and a base station. The method comprises the following steps: determining a non-serving cell base station needing to participate in macro-diversity combining MDC in a UE active set by a serving cell base station; transmitting an indication information to the non-serving cell base station needing to participate in MDC by the serving cell base station to indicate the non-serving cell base station to participate in MDC; and transmitting an indication information to other non-serving cell base stations in the active set by the serving cell base station to indicate the other non-serving cell base stations to carry out interference control operation. The system comprises the serving cell base station, the non-serving cell base stations, and a user terminal. The technical scheme can achieve macro-diversity combining and interference control in a more flexible manner, thereby optimizing the system performance.

Description

Grand branch set and and the comprehensive implementation method of Interference Control, system and base station
Technical field
The present invention relates to the network communications technology field, be specifically related to a kind of grand branch set and and Interference Control implementation method, system and base station.
Background technology
UMTS is the 3-G (Generation Three mobile communication system) that adopts the WCDMA air interface technologies, also calls the WCDMA communication system to the UMTS system usually.In the UMTS system, the overlay area of neighbor cell can exist overlapping, utilizes soft handover that seamless switching can be provided, and through the gain that grand branch set and MDC (MacroDiversity Combining) are realized, can increase the antijamming capability of system.Below the implementation procedure of MDC is simply described: the travelling carriage in the soft switching process and two base stations communicate through two different air interface channels simultaneously; For up link, two base stations are the uplink user data in the Code Channel of receiving mobile all.The uplink user data that two base stations receive all sends to RNC (RadioNetwork Controller; Radio network controller) selects to merge; RNC utilizes the frame reliability indicator that offers exterior ring power control to select one of them uplink user data preferably, and the data of selecting are sent to core net.
In handoff procedure, relate to the problem of adjacent area Interference Control.As far as certain sub-district; The up signal that receives comprises each user uplink channel transmitting power; If the user uplink channel emission power is excessive, can bring bigger interference to the transmission of whole user uplink data, make other user data transmission variation even call drops.For the sub-district that has wireless connections in the soft handover, uplink power control order that can issue through NodeB or descending power adjustment indication are controlled at the uplink channel transmission power of travelling carriage in the reasonable range.Like this, obtain the uplink macro diversity gain on the one hand, realized the control that the adjacent area is disturbed on the other hand.
More than MDC and adjacent area Interference Control have been carried out brief account.In E-HSPA (Evolved HighSpeed Packet Access, the high-speed packet of evolution inserts) network, the RNC function moves down into NodeB+ (E-HSPA NodeB, E-HSPA base station).NodeB+ directly links to each other with core net through the IuPS interface.In the E-HSPA network, situation is different.Below introduce the two kind background technologies relevant with the present invention program.
A kind of MDC implementation procedure in background technology one, the E-HSPA network is:
Up MDC realizes in user's base station in service sector; For the data on all Radio Links in the Active Set; If the reception data on the Radio Link of certain non-service cell base station correspondence are correct; Then this base station sends to this base station in service sector with upstream data, and base station in service sector carries out grand branch set and handle sending to core net afterwards to received upstream data.This scheme is similar to the realization of MDC among the existing RNC of 3G system, and the position of just function being realized moves down on the base station in service sector from RNC.
In the MDC implementation procedure in above-mentioned E-HSPA network, each non-service cell base station is sent the uplink power control order through the demodulation ascending control channel to travelling carriage, and the uplink channel transmission power of travelling carriage is controlled in the reasonable scope.
It is thus clear that; Such scheme is at first to realize that MDC is a prerequisite; There is the shortcoming of underaction in this scheme: such as; If operator hopes to exchange for through certain decreased performance (such as not adopting MDC) saving (free of data forwarding) of transfer resource, this requirement just has no idea to be met on the basis of this scheme.In addition, all carry out centralized grand branch collection processing for this base station in service sector up reception transfer of data, then will take the transfer resource between the base station in a large number if let all receive the correct soft handover base station of data.
Background technology two, E-HSPA network also can not adopt MDC.
If do not realize MDC; Then need be in base station in service sector the pre-configured information of not supporting MDC; Like configuration UL UPDT Indicator (UpLink User Plane DataTransfer, up user face data is transmitted indication)=NOT REQUIRED (not needing) in base station in service sector.Perhaps, Drift NB+ informs Serving NB+ through information interaction it does not support upstream data to transmit.Like this, base station in service sector is carried ULUPDT Indicator=NOT REQUIRED in RL Setup (Radio Link foundation) request that send the non-service cell base station.Improved IC (Improved Interference Control is activated according to indication in the RL Setup request that receives in the non-service cell base station; Improved Interference Control) function; Promptly receive only and the demodulation ascending control channel; With the uplink channel transmission power of control travelling carriage, and not demodulation uplink user data is not just transmitted uplink user data to Serving NB+ yet.Through such mode, transfer resource and the demodulation resource of NodeB+ between the NodeB+ have been saved.
It is thus clear that this scheme is to accomplish under the prerequisite that does not realize the MDC gain, to have reduced systematic function to a certain extent.
In sum, in realizing process of the present invention, the inventor finds that there is following problem at least in above-mentioned prior art:
In the prior art solutions, or adopt MDC, perhaps do not adopt under the prerequisite of MDC and realize Interference Control.So, under flat framework, also do not have a kind of grand branch set and with the total solution of Interference Control, with flexible way more comprehensive realize grand branch set and and Interference Control, thereby the performance of raising system.
Summary of the invention
Embodiment of the present invention provide a kind of grand branch set and and the comprehensive implementation method of Interference Control, system and base station, can with flexible way more realize grand branch set and and Interference Control, optimization of system performance.
A kind of grand branch set that embodiment of the present invention provides also reaches the comprehensive implementation method of Interference Control; Be applied to comprise the communication system of base station in service sector, non-service cell base station and user equipment (UE), this method comprises: base station in service sector is confirmed the non-service cell base station of the grand branch collection MDC of needs participation in the UE Active Set; Base station in service sector is sent indication information to the said non-service cell base station that needs to participate in MDC, indicates said non-service cell base station to participate in MDC; Base station in service sector is sent indication information in other non-service cell base station in Active Set; Indicate said other non-service cell base stations to carry out the Interference Control operation; Other non-service cell base station in the said Active Set is the non-service cell base station outside the non-service cell base station that needs participation MDC in the Active Set.
A kind of base station that another execution mode of the present invention provides is used to realize grand branch collection and Interference Control, comprising: confirm the unit, be used for confirming the non-service cell base station of the grand branch collection MDC of UE Active Set needs participation; Indicating member; The needs that are used for confirming to said definite unit are participated in the non-service cell base station of MDC and are sent indication information; Indicate said non-service cell base station to participate in MDC, and indication information is sent in other non-service cell base station in Active Set, indicate said other non-service cell base stations to carry out the Interference Control operation; Other non-service cell base station in the said Active Set is the non-service cell base station outside the non-service cell base station that needs participation MDC in the Active Set.
The another kind of base station that another execution mode of the present invention provides is used to realize grand branch collection and Interference Control, comprising: receiving element is used to receive the indication information that base station in service sector is sent; MDC when MDC is participated in the indication information indication that is used for receiving when said receiving element, is participated in the MDC unit; The Interference Control unit is used for carrying out the Interference Control operation when the indication information indication that said receiving element received, and carries out the Interference Control operation.
The comprehensive system that realizes of a kind of grand branch collection that another execution mode of the present invention provides and Interference Control comprises: comprise base station in service sector, non-service cell base station and user equipment (UE).Said base station in service sector comprises: confirm the unit, be used for confirming the non-service cell base station of the grand branch collection MDC of UE Active Set needs participation; Indicating member; The needs that are used for confirming to said definite unit are participated in the non-service cell base station of MDC and are sent indication information; Indicate said non-service cell base station to participate in MDC, and indication information is sent in other non-service cell base station in Active Set, indicate said other non-service cell base stations to carry out the Interference Control operation; Other non-service cell base station in the said Active Set is the non-service cell base station outside the non-service cell base station that needs participation MDC in the Active Set; Said non-service cell base station comprises: receiving element is used to receive the indication information that base station in service sector is sent; MDC when MDC is participated in the indication information indication that is used for receiving when said receiving element, is participated in the MDC unit; The Interference Control unit is used for carrying out the Interference Control operation when the indication information indication that said receiving element received, and carries out the Interference Control operation.
Description through technique scheme can be known; The technical scheme that embodiment of the present invention provides; Confirm in the Active Set to need to participate in the non-service cell base station of MDC and to indicate it to participate in MDC by base station in service sector, thereby avoided between the base station interface traffic load excessive to a certain extent; On the other hand, indicate it to carry out Interference Control, improve systematic function the non-service cell base station of not participating in MDC.In a word, the technical scheme that embodiment of the present invention provides, with flexible way more comprehensive realize grand branch set and and Interference Control, optimized systematic function.
Description of drawings
Fig. 1 is MDC and the comprehensive implementation method sketch map of Interference Control that first embodiment of the invention provides;
Fig. 2 is MDC and the comprehensive implementation method sketch map of Interference Control that second embodiment of the invention provides;
Fig. 3 is the SRNS reorientation implementation procedure sketch map that third embodiment of the invention provides;
Fig. 4 is the structural representation of the grand branch collection that provides of four embodiment of the invention and the comprehensive system that realizes of Interference Control.
Embodiment
Down in the face of the grand branch set of embodiment of the present invention and and the comprehensive implementation method of Interference Control describe, it is understandable that embodiment of the present invention is just for example.
In the method execution mode; Need in the UE Active Set to confirm the non-service cell base station of participation MDC by base station in service sector; Afterwards; Needs are participated in the non-service cell base station of MDC and send the indication information A that carries out MDC, other non-service cell base stations are sent the indication information B that carries out the Interference Control operation.
It is understandable that; For the non-service cell base station in the UE Active Set, acquiescence is to support MDC, but can be by base station in service sector according to certain condition; Decide in these non-service cell base stations, really participate among certain MDC by which with MDC ability.And predetermined condition can have multiple.Such as, according to the transmission bandwidth resource situation; And for example, according to the channel quality condition of non-service cell base station.This partial content will be described in detail in specific embodiment.Below the needs confirming are out participated in the non-service cell base station of MDC and the different operating of other non-service cell base stations is described.
One, needs is participated in the non-service cell base station of MDC
Base station in service sector is sent indication information A to the non-service cell base station of determining after determining the non-service cell base station that needs participation MDC, need participate in MDC with indication non-service cell base station, promptly need participate in MDC.
The implementation that base station in service sector is sent indication information A to the non-service cell base station has multiple.For example, indication information A is carried in the Radio Link request of setting up is sent to the non-service cell base station; Again for example, indication information A is carried in the newly-increased message that is exclusively used in this indication information of transmission and is sent to the non-service cell base station.Base station in service sector can utilize Radio Link to set up the UL UPDT Indicator in the request when utilizing the Radio Link request of setting up to transmit indication information, and the UL UPDTIndicator that sets up in the request like Radio Link is set to REQUIRED.Certainly, also can be that other information of utilizing Radio Link to set up in the request identify this indication information.Embodiment of the present invention is the restrict service cell base station concrete implementation of sending indication information A to the non-service cell base station not.
MDC handles operation and divides the MDC and the traditional M DC mode that strengthen different.
The non-service cell base station is after receiving the message that carries indication information A; Can participate in ImprovedMDC; The implementation of the MDC of this enhancing is: when the received data of base station in service sector judgement self are correct; Said self received data are sent to core net, finish the MDC flow process; When the received data of base station in service sector judgement self are incorrect; Through with the Signalling exchange of non-service cell base station; The MDC flow process is continued in notice non-service cell base station, receive the correct non-service cell base station of data with its data forwarding that receives to base station in service sector.In the above-mentioned information interaction; Under situation about satisfying condition; Base station in service sector is sent the data forwarding indication information to the correct non-service cell base station of Data Receiving, receive the correct non-service cell base station of data with its data forwarding that receives to base station in service sector.Embodiment of the present invention does not limit the concrete implementation procedure of Improved MDC operation.Simultaneously, the non-service cell base station can also be controlled the ascending power of subscriber equipment.It is understandable that, can adopt and carry out the same mode in non-service cell base station of Interference Control, realize power control, specifically describe referring to description to Interference Control.
The non-service cell base station also can start traditional M DC operation, the MDC mode of mentioning in the background technology promptly of the present invention after receiving the message that carries indication information A.All receive the correct soft handover base station of data and all up reception transfer of data are carried out centralized grand branch collection processing to base station in service sector, and detailed process is superfluous here.Simultaneously, the non-service cell base station can also be controlled the ascending power of subscriber equipment.Embodiment of the present invention does not limit the concrete implementation procedure of traditional MDC operation.
Corresponding M DC operation can be carried out according to the indication of base station in service sector in the non-service cell base station; For example; The non-service cell base station receive indication information A and determine indication information A represent to participate in Improved MDC after, participate in Improved MDC operation; Again for example, the non-service cell base station receive indication information A and determine indication information A represent to start traditional M DC after, carry out traditional M DC operation.
Base station in service sector can be carried out follow-up grand branch set and operation after receiving the next uplink user data of non-service cell base station transmits.For example, the base station in service sector utilization offers the frame reliability indicator of exterior ring power control and selects the next uplink user data preferably of one of them non-service cell base station transmits, and the uplink user data of selecting is sent to core net.Embodiment of the present invention not restrict service cell base station is proceeded the concrete implementation procedure that grand branch is gathered and operated.
Two, to not participating in the non-service cell base station of MDC
For the non-service cell base station that need not participate in MDC in the Active Set; Base station in service sector can be sent indication information B to these non-service cell base stations; Indicate these non-service cell base stations to carry out the Interference Control operation; It is understandable that MDC need not participated in the non-service cell base station of said execution Interference Control.
The non-service cell base station that need not participate in MDC in the Active Set here can do, other non-service cell base station in the Active Set except that the above-mentioned needs determined are participated in the non-service cell base station of MDC.
The implementation that base station in service sector is sent indication information B to the non-service cell base station has multiple, for example, the indication information B that carries out the Interference Control operation is carried at Radio Link sets up in the request and be sent to the non-service cell base station; Again for example, the indication information B that carries out Interference Control is carried in the newly-increased message that is exclusively used in this indication information of transmission is sent to the non-service cell base station.Base station in service sector can utilize Radio Link to set up the UL UPDTIndicator in the request when utilizing the Radio Link request of setting up to transmit indication information B, and the UL UPDT Indicator that sets up in the request like Radio Link is set to NOTREQUIRED.The UL UPDT Indicator that value is set to NOT REQUIRED promptly indicates the indication information B that carries out the Interference Control operation.Embodiment of the present invention not restrict service cell base station is sent to the non-service cell base station and is not required that the non-service cell base station participates in the concrete implementation of the indication information B of MDC.
The non-service cell base station can start and carry out the Interference Control operation in other words after receiving the message that carries indication information B, for example carries out Improved IC operation, more for example, carries out the traditional IC operation.Carry out Improved IC operation can for: the non-service cell base station receives and the demodulation ascending control channel; Obtain UE to up interference; And through down control channel, the ascending power of adjustment UE, demodulation is not carried out to uplink data channels in the non-service cell base station.Carry out traditional I C operation can for: the non-service cell base station receives and the demodulation ascending control channel is controlled with the ascending power to subscriber equipment; And uplink data channels carried out demodulation, but the uplink user data after the demodulation does not transfer to base station in service sector.Embodiment of the present invention is the kind that specifically comprises of limit interferences control operation not, does not also limit the concrete implementation procedure of various types of Interference Control operation.
The inventive method execution mode can be applied in the wireless evolution network, as being applied in the E-HSPA network, can be applied among the long evolving system LTE for another example.
Because the base station in service sector in the embodiment of the present invention is confirmed part non-service cell base station and need be participated in MDC's; Therefore; Avoid whole non-service cell base stations all to participate in the excessive problem of interface traffic load between the base station that MDC possibly cause, saved the transfer resource between the base station; And; Because MDC need not participated in some non-service cell base stations, need not send uplink user data to base station in service sector, therefore; Demodulation can not need be carried out to uplink user data in these non-service cell base stations, thereby has practiced thrift the demodulation resource of base station.On the other hand, indicate it to carry out Interference Control, further improved systematic function the non-service cell base station of not participating in MDC.
Below lift specific embodiment respectively, technical scheme of the present invention is described in detail.
It is understandable that the method in the non-service cell base station of the definite needs participation of base station in service sector MDC can have multiple.Such as: 1, can confirm which non-service cell base station needs participation MDC according to the channel quality of non-service cell base station.2, confirm according to transmission bandwidth resource operating position.
Describe for example respectively below.
Embodiment one, confirming according to the non-service cell channel quality that needs are participated in MDC and to be example with Improved MDC, Improved IC, the grand branch set that embodiment of the invention is provided in conjunction with accompanying drawing and and the comprehensive implementation method of Interference Control describe.Fig. 1 is the grand branch set and and the comprehensive implementation method sketch map of Interference Control of present embodiment.
Step 101: base station in service sector receives the measurement report that UE sends.
In this step, the condition that triggers the UE reporting measurement reports has multiple possibility.Such as:
Increase or deletion or replacement Active Set in during the sub-district, UE is to base station in service sector reporting measurement reports initiatively, base station in service sector receives this measurement report.This measurement report has comprised the information of the non-service cell that all activated collection sub-district is corresponding.
Perhaps, under the stable situation in Active Set sub-district, base station in service sector select sub-district in the Active Set partly or entirely, send the measurement report indication to UE, indication UE reports the measurement report of this sub-district of selecting.After UE receives the measurement report indication,, send measurement report to base station in service sector according to this measurement report indication.It is understandable that, because base station in service sector can indicate the sub-district that needs are measured select through this measurement report, so UE can select to measure to the sub-district.Such as, three sub-districts are arranged in the Active Set, suppose its corresponding a, b, three non-service cell base stations of c respectively, base station in service sector only notifies UE to select a and b corresponding district are measured.So UE only measures a and b corresponding district, and reporting measurement reports.And the c corresponding district is not measured.It is understandable that base station in service sector also can directly indicate UE that the part or all of non-service cell base station in the Active Set is measured, and reporting measurement reports.
It is that example is described that present embodiment is mainly initiatively selected the scheme of sub-district in the Active Set with base station in service sector; The difference that the scheme that conversion, UE initiatively report takes place with the Active Set sub-district is: in the scheme that base station in service sector is initiatively selected; Can select all or part of sub-district in the Active Set; That is the scope of the sub-district that, need measure maybe be different.And flow process afterwards is similar substantially.
Step 102: base station in service sector obtains the channel quality of non-service cell base station according to measurement report;
As previously mentioned, the pairing non-service cell of these measurement reports base station can be a part of or whole of non-service cell base station in the Active Set.In the present embodiment, be that example is described with a and b still, base station in service sector is according to measurement report, and calculating can get the channel quality of a and b.
Step 103: base station in service sector is according to the channel quality of non-service cell base station, confirms that which non-service cell base station need participate in MDC;
Base station in service sector confirms that the implementation that need participate in the non-service cell base station of MDC has multiple; For example; When base station in service sector surpasses predetermined threshold at the ratio of the channel quality of the channel quality of determining the non-service cell base station and base station in service sector, confirm that this non-service cell base station need participate in MDC; Again for example, when base station in service sector surpasses predetermined threshold at the channel quality of determining the non-service cell base station, confirm that this non-service cell base station need participate in MDC.The MDC that the non-service cell base station need be participated in can be traditional M DC, also can be the MDC that strengthens.Present embodiment is that example is described with the MDC that strengthens, and for example, among a and the b, if having only a to satisfy the condition of above-mentioned predetermined threshold, then only needs a to participate in the MDC that strengthens.
Step 104: base station in service sector is bristled with anger to the non-service cell base station of needs participation MDC and is shown information A, participates in MDC to indicate this non-service cell base station;
Can send indication information A through following mode: when base station in service sector is participated in non-service cell base station transmission RL Setup Req (Radio Link the is set up request) message of MDC at the needs of determining to these; It is UL UPDTREQUIRED that UL UPDT Indicator in the RL Setup Req message is set to REQUIRED, with expression indication information A.Certainly, also can carry indication information A through other message.In the present embodiment, non-service cell base station a need participate in MDC, so base station in service sector is sent indication information A to a.
Step 105: base station in service sector is sent indication information B in other non-service cell base station in Active Set, carries out the Interference Control operation to indicate other non-service cell base stations;
Can all confirm as the non-service cell base station that need not participate in Improved MDC with participating in other non-service cell base station the Improved MDC except that the above-mentioned needs of determining in the Active Set.In the present embodiment, the non-service cell base station that need not participate in strengthening MDC is b and c.Then base station in service sector is to b and c transmission RL Setup Req (Radio Link is set up request) message the time; It is UL UPDT NOT REQUIRED that UL UPDT Indicator in the RL Setup Req message is set to NOT REQUIRED, with expression indication information B.Certainly, also can carry indication information B through other message.
Step 106: Improved MDC is participated in the non-service cell base station that receives indication information A;
In the present embodiment, non-service cell base station a participates in the MDC of enhancing.The MDC operation that strengthens can comprise: when the received data of base station in service sector judgement self were correct, the data that self is received sent to core net, finish the MDC flow process; When the received data of base station in service sector judgement self were incorrect, notice needed to participate in the non-service cell base station of MDC, receives the correct non-service cell base station of data the data that it receives are sent to base station in service sector.
Concrete, when base station in service sector is judged its uplink user data check errors that receives, through be with interior with the non-service cell base station or out-of-band signalling etc. mutual, notify the non-service cell base station that uplink user data is forwarded to base station in service sector.After the correct non-service cell base station of reception data obtains the notice of base station in service sector, the uplink user data after the demodulation is sent to base station in service sector.
Improved IC is carried out in step 107, the non-service cell base station that receives indication information B.
In the present embodiment, non-service cell base station b and c carry out the Interference Control that strengthens.The Interference Control that strengthens can comprise: the non-service cell base station receives and the demodulation ascending control channel, obtains UE to up interference, and through down control channel, the ascending power of adjustment UE, demodulation is not carried out to uplink data channels in the non-service cell base station.
Embodiment two; Confirming according to the transmission bandwidth resource that needs are participated in the non-service cell base station of MDC and to be example with Improved MDC, Improved IC, the grand branch set that embodiment of the present invention is provided in conjunction with accompanying drawing and and the comprehensive implementation method of Interference Control describe.Fig. 2 is grand branch set and and the comprehensive implementation method sketch map of Interference Control.
Step 201: base station in service sector is confirmed transmission bandwidth resource operating position;
As far as base station in service sector, total bandwidth is a fixed value, and base station in service sector can be monitored self current residual bandwidth in real time.
Step 202: base station in service sector is according to transmission bandwidth resource operating position, judges that which non-service cell base station need participate in MDC:
When present UE has newly-increased Active Set sub-district,, need participate in MDC to the base station of confirming this newly-increased Active Set sub-district if when residue transmission bandwidth resource satisfies predefined thresholding.Pre-conditioned as if not satisfying this, confirm that then MDC need not participated in the base station of this newly-increased Active Set sub-district.
Suppose that total bandwidth is B, if the current residual resource greater than certain thresholding, as 30%, so, confirms that MDC is participated in the base station of this newly-increased Active Set sub-district.Certainly, judgment condition can also be other threshold values, and perhaps, as foundation, present embodiment is not done qualification to this through already used bandwidth resources.
Step 203-206, identical substantially with the step 104-107 of embodiment one, unique difference is; In the scheme of present embodiment, be that judgement is one by one carried out in newly-increased Active Set sub-district, and confirm in view of the above whether it participates in MDC or carry out Interference Control; For simplicity, be not described in detail here.
Embodiment three: carry out under the scene that strengthens Interference Control, possibly relate to switching, below in conjunction with accompanying drawing, present embodiment is described in detail.
If user equipment (UE) more strengthens the non-service cell base station of Interference Control near execution, the non-service cell base station of promptly uplink data channels not being carried out demodulation, base station in service sector can be carried out handover operation according to the channel quality of these non-service cell base stations.
The handover operation here can be SRNS reorientation flow process.For example, UE more near the base station when carrying out the non-service cell base station of Improved IC function, base station in service sector and this non-service cell base station can carry out soft handover, and UE do not relate to the SRNS reorientation flow process of mode.Thereby make the base station provide the error rate low uplink user data for core net.The SRNS reorientation here can be to forward the role of the SRNC of certain UE the process of another one RNC functional entity to by a RNC functional entity, and under flat framework, the RNC functional entity has moved down into the base station.SRNS reorientation flow process can relate to the SRNS reorientation flow process of mode for the user, the SRNS reorientation flow process that also can not relate to for the user.
When in handoff procedure, adopting UE not relate to the SRNS reorientation flow process of mode; Base station in service sector can be sent the reorientation cause value information of transmitting based on up user face data to core net, and this cause value information can be carried at base station in service sector in the RELOCATION REQUEST message that core net is sent.Reorientation cause value information based on up user face data is transmitted can be expressed as Relocation for UL UPDT.Core net also can be sent the reorientation cause value information of transmitting based on up user face data to target BS, and this cause value information can be carried at core net in the RELOCATION REQUEST message that target BS sends.Target BS directly distributes demodulation resource after receiving the cause value that carries based on the Interference Control reorientation, restart the uplink user data of this UE of demodulation, then the uplink user data after the demodulation is transferred to core net.For example; Target BS directly distributes demodulation resource, then after receiving the RELOCATION REQUEST message that carries Relocation for UL UPDT; Begin the uplink user data that user device transmissions is come is carried out demodulation, the uplink user data after the demodulation is transferred to core net.
Do not relate in the SRNS reorientation implementation procedure of mode the user; Need between target BS and core net, set up the IU interface; Before the IU interface was set up, target BS can be transmitted to base station in service sector with the uplink user data of its demodulation, to guarantee the continuity of uplink user data.The present invention not limited subscriber does not relate to the concrete implementation procedure of the SRNS reorientation flow process of mode.
Fig. 3 is the SRNS reorientation implementation procedure sketch map that third embodiment of the invention provides.Among Fig. 3, the Interference Control function that non-service cell is base station initiated strengthens is also promptly being carried out the Interference Control of enhancing.
Step 301, base station in service sector receive the measurement report that UE sends;
Comprise in this measurement report this UE more near, carry out the information of non-service cell base station of the Interference Control of enhancing.
Step 302, base station in service sector are determined needs according to the measurement report that receives and are carried out handover operation, execution in step 303.
When base station in service sector according to measurement report, when confirming to satisfy switching condition, execution in step 303.
Step 303, base station in service sector are sent Relocation Required (re-positioning request) message to CN (core net).
Carry the reorientation cause value of Relocation for UL UPDT (based on the reorientation of up user face data forwarding) in this Relocation Required message; And, also carry the reorientation type information of UE Not Involved in the Relocation Required message.
After step 304, CN receive Relocation Required message, send Relocation Request (re-positioning request) message to target non-service cell base station.
Target non-service cell base station has promptly started the non-service cell base station of Improved IC function.This Relocation Request message carries the reorientation cause value of Relocation for UL UPDT, and, also carry the reorientation type information of UE Not Involved.
After step 305, non-service cell base station receive Relocation Request message, distribute demodulation resource, begin the uplink user data that user device transmissions is come is carried out demodulation.
Certainly, can also comprise the step that re-positioning request is replied.That is Relocation Request Ack (re-positioning request is replied) message is returned to CN in the non-service cell base station that, receives Relocation Request message.
The UE that the technical scheme that present embodiment provides adopts does not relate to the handover operations such as SRNS reorientation flow process of mode, has reduced switching delay, has guaranteed to switch channel quality between back UE and the target BS.
The grand branch set that embodiment of the present invention is provided below in conjunction with accompanying drawing and and comprehensively realization system of Interference Control describe.
Fig. 4 is the structural representation of the grand branch collection that provides of four embodiment of the invention and the comprehensive system that realizes of Interference Control.This system comprises base station in service sector, non-service cell base station and user equipment (UE).
Base station in service sector comprises: confirm unit 401, be used for confirming the non-service cell base station of the grand branch collection MDC of UE Active Set needs participation; Indicating member 402; Be used for sending indication information to the non-service cell base station of confirming unit 401 needs participation MDC; Indicate this non-service cell base station that need participate in MDC to participate in the MDC operation; And indication information is sent in other non-service cell base station in Active Set, indicates these other non-service cell base stations to carry out the Interference Control operation.Other non-service cell base station in the Active Set refers to the non-service cell base station outside the non-service cell base station that needs participation MDC in the Active Set.
The non-service cell base station comprises: receiving element 403 is used to receive the indication information that base station in service sector is sent; When MDC unit 404, the indication information that is used for receiving when receiving element are the indication information of indication participation MDC operation, participate in the MDC operation; When Interference Control unit 405, the indication information that is used for receiving when receiving element are the indication information of indication execution Interference Control operation, carry out the Interference Control operation.
Below base station in service sector is described in detail:
Further, when adopting transmission bandwidth utilization of resources situation to confirm that which non-service cell base station need participate under the situation of MDC, confirm that unit 401 can comprise specifically that judgment sub-unit and definite subelement realize its function.This judgment sub-unit is used for when UE increases the Active Set non-service cell newly, judging whether current residual transmission bandwidth resource is higher than preset thresholding; Accordingly; Should confirm subelement, be used for when the judged result of said judgment sub-unit when being, confirm that newly-increased non-service cell base station participation MDC operates; Certainly; Should confirm subelement, can also be used for when the judged result of judgment sub-unit for not the time, confirm that newly-increased non-service cell base station do not participate in MDC and operate.
When utilizing the UE measurement report to calculate the channel quality of non-service cell base station, need participate under the situation of MDC to determine which non-service cell base station, confirm that unit 401 can comprise that receiving subelement, computation subunit and definite subelement realizes its function.This receives subelement, is used to receive the measurement report that UE reports; Accordingly, this computation subunit is used for confirming the channel quality of non-service cell base station according to receiving the measurement report that subelement receives; Accordingly, this confirms subelement, is used for the channel quality according to the definite non-service cell base station of computation subunit, confirms that channel quality satisfies MDC is participated in pre-conditioned non-service cell base station as needs non-service cell base station.In addition, confirm that unit further comprises the chooser unit, be used for selecting to activate concentrated part or whole sub-district that send the measurement report indication to UE, indication UE reports the measurement report of this sub-district of selecting.
As previously mentioned, the MDC that indication information A representes to participate in strengthening handles operation, or starts traditional M DC and handle operation, and indication information B representes that the Interference Control of carrying out enhancing handles operation, perhaps carries out traditional Interference Control and handles operation.Particular content can for simplicity, repeat no more referring to method embodiment here.
Further, base station in service sector can also comprise switch unit, is used for the channel quality according to the non-service cell base station, carries out the handover operation between base station in service sector and the non-service cell base station; The non-service cell base station that this place is mentioned is the non-service cell base station that has started the Interference Control function that strengthens, and also promptly, is carrying out the non-service cell base station of the Interference Control of enhancing.Concrete, switch unit adopts UE not relate to mode and triggers SRNS Serving Radio Network Subsystem SRNS reorientation flow process.Idiographic flow repeats no more referring to method embodiment here.
When relating to switching, this scheme also comprises core net.Core net comprises the unit of the re-positioning request that receives the base station in service sector transmission, and this unit is transmitted to target non-service cell base station after receiving this request.This resets in the request, comprises that UE does not relate to mode information (mode of SRNS reorientation) and based on the cause value of Interference Control reorientation.
Below the non-service cell base station is described in detail:
MDC unit 404 may further include: first subelement is used for when the indication information of indication participation MDC is represented to start the MDC operation of enhancing, participating in the MDC operation that strengthens.
Interference Control unit 405 can further include: comprise second subelement; Be used for when the indication information of indication execution Interference Control operation is represented to carry out the Interference Control operation of enhancing; Receive only and the demodulation ascending control channel, realize uplink power control UE.
When the non-service cell base station of carrying out the Interference Control of enhancing relates to when switching, can also comprise the unit that receives the re-positioning request that CN sends.This resets in the request, comprises that UE does not relate to mode information (mode of SRNS reorientation) and based on the cause value of Interference Control reorientation.The non-service cell base station can also comprise the processing subelement; Be used for after the unit of above-mentioned reception re-positioning request receives this request; Distribute demodulation resource, the uplink user data that transmission comes to UE is carried out demodulation, and the uplink user data after the demodulation is transferred to core net.
Because the base station in service sector in the embodiment of the present invention is confirmed part non-service cell base station and need be participated in MDC's; Therefore; Avoid whole non-service cell base stations all to participate in the excessive problem of interface traffic load between the base station that MDC possibly cause, saved the transfer resource between the base station; And; Because MDC need not participated in some non-service cell base stations, need not send uplink user data to base station in service sector, therefore; Demodulation can not need be carried out to uplink user data in these non-service cell base stations, thereby has practiced thrift the demodulation resource of base station.On the other hand, indicate it to carry out Interference Control, further improved systematic function the non-service cell base station of not participating in MDC.
Though described the present invention through embodiment, those of ordinary skills know, the present invention has many distortion and variation and do not break away from essence of the present invention, and the claim of application documents of the present invention comprises these distortion and variation.

Claims (18)

  1. A grand branch set and and the comprehensive implementation method of Interference Control, be applied to comprise the communication system of base station in service sector, non-service cell base station and user equipment (UE) it is characterized in that said method comprises:
    Base station in service sector confirms to need in the UE Active Set to participate in the non-service cell base station of grand branch set and MDC;
    Base station in service sector is sent indication information to the said non-service cell base station that needs to participate in MDC, indicates said non-service cell base station to participate in MDC;
    Base station in service sector is sent indication information in other non-service cell base station in Active Set; Indicate said other non-service cell base stations to carry out the Interference Control operation; Other non-service cell base station in the said Active Set is the non-service cell base station outside the non-service cell base station that needs participation MDC in the Active Set.
  2. 2. the method for claim 1 is characterized in that, said base station in service sector confirms that the step that need participate in the non-service cell base station of MDC in the UE Active Set comprises:
    When UE increased the Active Set non-service cell newly, base station in service sector if current residual transmission bandwidth resource is higher than preset thresholding, was then confirmed said newly-increased non-service cell base station participation MDC according to transmission bandwidth resource operating position.
  3. 3. the method for claim 1 is characterized in that, said base station in service sector confirms that the step that need participate in the non-service cell base station of MDC in the UE Active Set comprises:
    Base station in service sector receives the measurement report that UE reports;
    Base station in service sector is confirmed the channel quality of non-service cell base station according to said measurement report;
    Base station in service sector confirms that according to the channel quality of said non-service cell base station channel quality satisfies MDC is participated in pre-conditioned non-service cell base station as needs non-service cell base station.
  4. 4. method as claimed in claim 3 is characterized in that, the step of the measurement report that said base station in service sector reception UE reports comprises:
    Increase or deletion or replacement Active Set in during the sub-district, base station in service sector receives the measurement report that UE initiatively reports to this base station in service sector; Or
    Base station in service sector is selected the part or all of sub-district in the Active Set, sends the measurement report indication to UE, and indication UE reports the measurement report of the said sub-district of selecting, and receives the measurement report that UE reports.
  5. 5. like claim 2 or 3 described methods, it is characterized in that the said non-service cell of said indication base station is participated in MDC and comprised:
    Indicate said non-service cell base station to participate in the MDC that strengthens, perhaps start traditional M DC.
  6. 6. method as claimed in claim 5 is characterized in that, the MDC of said enhancing comprises:
    When base station in service sector judges that self received data is correct, said self received data are sent to core net, finish the MDC flow process;
    When the received data of base station in service sector judgement self were incorrect, notice needed to participate in the non-service cell base station of MDC, receives the correct non-service cell base station of data the data that it receives are sent to base station in service sector.
  7. 7. like claim 2 or 3 described methods, it is characterized in that said other non-service cell base stations of said indication are carried out the Interference Control operation and comprised:
    Indicate said other non-service cell base stations to carry out the Interference Control that strengthens and operate, perhaps carry out traditional Interference Control and handle operation.
  8. 8. method as claimed in claim 7 is characterized in that, the Interference Control of said enhancing is handled operation and comprised:
    Said non-service cell base station receives only and the demodulation ascending control channel, realizes the uplink power control to UE.
  9. 9. method as claimed in claim 7 is characterized in that, more near the non-service cell base station of carrying out the Interference Control that strengthens, said method also comprises as if UE:
    Base station in service sector is carried out the handover operation between base station in service sector and the said non-service cell base station according to the channel quality of said non-service cell base station.
  10. 10. method as claimed in claim 9 is characterized in that, the said handover operation that carries out between base station in service sector and the non-service cell base station comprises:
    Base station in service sector adopts UE not relate to mode and triggers SRNS Serving Radio Network Subsystem SRNS reorientation flow process.
  11. 11. method as claimed in claim 10 is characterized in that, triggers SRNS reorientation flow process if said base station in service sector adopts UE not relate to mode, this flow process comprises:
    Base station in service sector does not relate to UE in mode information and is carried at based on the cause value of Interference Control reorientation and is sent to core net in the re-positioning request, and said core net will carry UE and not relate to mode information and be sent to reorientation target non-service cell base station based on the re-positioning request of the cause value of Interference Control reorientation;
    And said method also comprises:
    Receive the target non-service cell base station of said re-positioning request, the uplink user data of beginning demodulation UE.
  12. 12. a base station is used to realize grand branch collection and Interference Control, it is characterized in that, comprising:
    Confirm the unit, be used for confirming the non-service cell base station of the grand branch collection MDC of UE Active Set needs participation;
    Indicating member; The needs that are used for confirming to said definite unit are participated in the non-service cell base station of MDC and are sent indication information; Indicate said non-service cell base station to participate in MDC, and indication information is sent in other non-service cell base station in Active Set, indicate said other non-service cell base stations to carry out the Interference Control operation; Other non-service cell base station in the said Active Set is the non-service cell base station outside the non-service cell base station that needs participation MDC in the Active Set.
  13. 13. base station as claimed in claim 12 is characterized in that, said definite unit comprises:
    Judgment sub-unit is used for when UE increases the Active Set non-service cell newly, judging whether current residual transmission bandwidth resource is higher than preset thresholding;
    Confirm subelement, be used for when the judged result of said judgment sub-unit when being, confirm that said newly-increased non-service cell base station participates in the MDC operation.
  14. 14. base station as claimed in claim 12 is characterized in that, said definite unit comprises:
    Receive subelement, be used to receive the measurement report that UE reports;
    Computation subunit is used for the measurement report that receives according to said reception subelement, confirms the channel quality of non-service cell base station;
    Confirm subelement, be used for channel quality, confirm that channel quality satisfies MDC is participated in pre-conditioned non-service cell base station as needs non-service cell base station according to the definite non-service cell base station of said computation subunit.
  15. 15. base station as claimed in claim 14 is characterized in that, said definite unit also comprises the chooser unit, is used for selecting the part or all of sub-district of Active Set, sends the measurement report indication to UE, and indication UE reports the measurement report of this sub-district of selecting.
  16. 16. base station as claimed in claim 12 is characterized in that, said MDC comprises the MDC or the traditional M DC of enhancing, and said Interference Control operation comprises the Interference Control processing operation of enhancing, and perhaps traditional Interference Control is handled operation.
  17. 17. base station as claimed in claim 12 is characterized in that, said base station also comprises switch unit, is used for the channel quality according to the non-service cell base station, carries out the handover operation between base station in service sector and the said non-service cell base station;
    Said non-service cell base station is the non-service cell base station of carrying out the Interference Control that strengthens.
  18. 18. the comprehensive system that realizes of grand branch collection and Interference Control comprises base station in service sector, non-service cell base station and user equipment (UE), it is characterized in that,
    Said base station in service sector comprises:
    Confirm the unit, be used for confirming the non-service cell base station of the grand branch collection MDC of UE Active Set needs participation;
    Indicating member; The needs that are used for confirming to said definite unit are participated in the non-service cell base station of MDC and are sent indication information; Indicate said non-service cell base station to participate in MDC, and indication information is sent in other non-service cell base station in Active Set, indicate said other non-service cell base stations to carry out the Interference Control operation; Other non-service cell base station in the said Active Set is the non-service cell base station outside the non-service cell base station that needs participation MDC in the Active Set;
    Said non-service cell base station comprises:
    Receiving element is used to receive the indication information that base station in service sector is sent;
    MDC when MDC is participated in the indication information indication that is used for receiving when said receiving element, is participated in the MDC unit;
    The Interference Control unit is used for carrying out the Interference Control operation when the indication information indication that said receiving element received, and carries out the Interference Control operation.
CN2007100757045A 2007-08-08 2007-08-08 Integrated realizing method, system and base station for macrodiversity incorporating and interference control Active CN101364826B (en)

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CN101841399B (en) 2009-03-16 2013-08-07 上海贝尔股份有限公司 Method and device for implementing uplink synchronization HARQ (Hybrid Automatic Repeat Request) process in multi-base station cooperative receiving network
CN102484510A (en) * 2009-04-24 2012-05-30 新加坡科技研究局 Base stations, cellular communication systems, methods for controlling a base station, and methods for controlling a cellular communication system
CN101998669B (en) * 2009-08-21 2013-04-24 华为技术有限公司 Dynamic connection method based on base station cooperation, base station, cooperation multi-input multi-output system
CN101778438B (en) * 2010-01-25 2012-09-05 华为技术有限公司 Method and device for coordinated communication and switching method and base station control device thereof
BR112015006237A2 (en) * 2012-09-20 2017-07-04 Huawei Tech Co Ltd node scaling method and control
CN108882349A (en) * 2017-05-09 2018-11-23 中兴通讯股份有限公司 The method and apparatus for controlling inner-loop power control

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