CN101364826A - 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 PDFInfo
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- CN101364826A CN101364826A CNA2007100757045A CN200710075704A CN101364826A CN 101364826 A CN101364826 A CN 101364826A CN A2007100757045 A CNA2007100757045 A CN A2007100757045A CN 200710075704 A CN200710075704 A CN 200710075704A CN 101364826 A CN101364826 A CN 101364826A
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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
Technical field
The present invention relates to the network communications technology field, be specifically related to a kind of grand diversity and merge 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 the UMTS system is called the WCDMA communication 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 merges the gain that MDC (MacroDiversity Combining) is realized by grand diversity, can increase the antijamming capability of system.Below the implementation procedure of MDC is simply described: the travelling carriage in the soft switching process communicates by two different air interlace channel simultaneously with two base stations, 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.For 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 by 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 simple introduction.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 by 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, base station in service sector carries out sending to core net after the grand diversity merging processing to received upstream data.This scheme is similar to the realization of MDC among the existing RNC of 3G system, and just the position that function is 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 sends the uplink power control order by the demodulation ascending control channel to travelling carriage, and the uplink channel transmission power of travelling carriage is controlled in the reasonable scope.
As seen, 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 wishes to exchange for by 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, carry out centralized grand diversity processing all up reception transfer of data for this base station in service sector, then will take the transfer resource between the base station in a large number if allow 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, as 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, DriftNB+ informs Serving NB+ by 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 the non-service cell base station sends.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, uplink channel transmission power with the control travelling carriage, and not demodulation uplink user data is not just transmitted uplink user data to Serving NB+ yet.By such mode, transfer resource between the NodeB+ and the demodulation resource of NodeB+ have been saved.
As seen, this scheme is to finish 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 above-mentioned prior art, and there are the following problems at least:
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 there is not the total solution of a kind of grand diversity merging and Interference Control, realize that so that flexible way is comprehensive more grand diversity merges and Interference Control, thereby improve the performance of system.
Summary of the invention
Embodiment of the present invention provides a kind of grand diversity to merge and the comprehensive implementation method of Interference Control, system and base station, can realize that grand diversity merges and Interference Control the optimization system performance with flexible way more.
A kind of grand diversity that embodiment of the present invention provides merges 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), this method comprises: base station in service sector determines to need in the UE Active Set to participate in the non-service cell base station of grand diversity MDC; Base station in service sector sends indication information to the described non-service cell base station that needs to participate in MDC, indicates described non-service cell base station to participate in MDC; Base station in service sector sends indication information in other non-service cell base station in Active Set, indicate described other non-service cell base stations to carry out the Interference Control operation, other non-service cell base station in the described Active Set is the non-service cell base station outside the non-service cell base station that needs to participate in MDC in the Active Set.
A kind of base station that another execution mode of the present invention provides is used to realize grand diversity and Interference Control, comprising: determining unit is used for determining that the UE Active Set needs to participate in the non-service cell base station of grand diversity MDC; Indicating member, the non-service cell base station that the needs that are used for determining to described determining unit participate in MDC sends indication information, indicate described non-service cell base station to participate in MDC, and other non-service cell base station sends indication information in Active Set, indicate described other non-service cell base stations to carry out the Interference Control operation, other non-service cell base station in the described Active Set is the non-service cell base station outside the non-service cell base station that needs to participate in 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 diversity and Interference Control, comprising: receiving element is used to receive the indication information that base station in service sector is sent; The MDC unit when indication information indication that is used for receiving when described receiving element participates in MDC, participates in MDC; The Interference Control unit is used for carrying out the Interference Control operation when the indication information indication that described receiving element received, and carries out the Interference Control operation.
The comprehensive system that realizes of a kind of grand diversity 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).Described base station in service sector comprises: determining unit is used for determining that the UE Active Set needs to participate in the non-service cell base station of grand diversity MDC; Indicating member, the non-service cell base station that the needs that are used for determining to described determining unit participate in MDC sends indication information, indicate described non-service cell base station to participate in MDC, and other non-service cell base station sends indication information in Active Set, indicate described other non-service cell base stations to carry out the Interference Control operation, other non-service cell base station in the described Active Set is the non-service cell base station outside the non-service cell base station that needs to participate in MDC in the Active Set; Described non-service cell base station comprises: receiving element is used to receive the indication information that base station in service sector is sent; The MDC unit when indication information indication that is used for receiving when described receiving element participates in MDC, participates in MDC; The Interference Control unit is used for carrying out the Interference Control operation when the indication information indication that described receiving element received, and carries out the Interference Control operation.
Description by technique scheme as can be known, the technical scheme that embodiment of the present invention provides, determine to need to participate in the non-service cell base station of MDC in the Active Set and 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 that does not participate in MDC.In a word, the technical scheme that embodiment of the present invention provides realizes that so that flexible way is comprehensive more grand diversity merges and Interference Control, has optimized systematic function.
Description of drawings
Fig. 1 is MDC and the comprehensive implementation method schematic diagram of Interference Control that first embodiment of the invention provides;
Fig. 2 is MDC and the comprehensive implementation method schematic diagram of Interference Control that second embodiment of the invention provides;
Fig. 3 is the SRNS reorientation implementation procedure schematic diagram that third embodiment of the invention provides;
Fig. 4 is the structural representation of the grand diversity that provides of four embodiment of the invention and the comprehensive system that realizes of Interference Control.
Embodiment
Grand diversity merging and the comprehensive implementation method of Interference Control to embodiment of the present invention describes below, is understandable that, embodiment of the present invention just for example.
In the method execution mode, determine to need in the UE Active Set to participate in the non-service cell base station of MDC by base station in service sector, afterwards, the non-service cell base station that needs is participated in MDC sends the indication information A that carries out MDC, other non-service cell base stations is sent the indication information B that carries out the Interference Control operation.
Be 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 determined are 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 sends 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 needs to participate in MDC.
Base station in service sector has multiple to the implementation that the non-service cell base station sends indication information A.For example, indication information A is carried in the Radio Link request of setting up and 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 be utilized the UL UPDT Indicator in the Radio Link foundation request when utilizing the Radio Link request of setting up to transmit indication information, the UL UPDTIndicator that sets up in the request as 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 does not limit base station in service sector sends specific implementation from indication information A to the non-service cell base station.
The MDC that MDC processing operation branch strengthens and traditional MDC mode are 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, described 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, by 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 sends 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 specific implementation process of Improved MDC operation.Simultaneously, the non-service cell base station can also be controlled the ascending power of subscriber equipment.Be 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 MDC 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 diversity processing to base station in service sector, and detailed process is superfluous herein.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 specific implementation process 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 MDC after, carry out traditional MDC operation.
Base station in service sector can be carried out follow-up grand diversity union 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 does not limit the specific implementation process that base station in service sector is proceeded grand diversity union operation.
Two, to not needing to participate in the non-service cell base station of MDC
For the non-service cell base station that does not need to participate in MDC in the Active Set, base station in service sector can send indication information B to these non-service cell base stations, indicate these non-service cell base stations to carry out the Interference Control operation, be understandable that the non-service cell base station of described execution Interference Control does not need to participate in MDC.
The non-service cell base station that does not need to participate in MDC in the Active Set here can be, other non-service cell base station in the Active Set except that the above-mentioned needs of determining participate in the non-service cell base station of MDC.
The implementation that base station in service sector sends 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 and is sent to the non-service cell base station.Base station in service sector can be utilized the UL UPDTIndicator in the Radio Link foundation request when utilizing the Radio Link request of setting up to transmit indication information B, the UL UPDT Indicator that sets up in the request as 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 does not limit base station in service sector sends specific implementation from the indication information B that does not require non-service cell base station participation MDC to the non-service cell base station.
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, adjust the ascending power of UE by down control channel, demodulation is not carried out to uplink data channels in the non-service cell base station.Carry out traditional IC 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 specific implementation process 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 determining section non-service cell base station in the embodiment of the present invention need participate 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 may cause, saved the transfer resource between the base station; And, because some non-service cell base stations do not need to participate in MDC, do not need to send uplink user data, therefore to base station in service sector, these non-service cell base stations can not need uplink user data is carried out demodulation, thereby have saved 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 that does not participate in MDC.
Below lift specific embodiment respectively, technical solution of the present invention is described in detail.
Be 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 determine which non-service cell base station needs participates in MDC according to the channel quality of non-service cell base station.2, determine according to transmission bandwidth resource operating position.
Be described for example respectively below.
Embodiment one, and determining according to the non-service cell channel quality that needs participate in MDC and to be example with Improved MDC, Improved IC, the grand diversity that the invention process example is provided merges and the comprehensive implementation method of Interference Control describes in conjunction with the accompanying drawings.Fig. 1 is that the grand diversity of present embodiment merges and the comprehensive implementation method schematic diagram of Interference Control.
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 when replacing in the Active Set sub-district, UE is to base station in service sector reporting measurement reports initiatively, and base station in service sector receives this measurement report.This measurement report has comprised the information of the non-service cell of all activated collection sub-district correspondence.
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.Be understandable that, because base station in service sector can indicate the sub-district that needs are measured select by 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.Be 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 may 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 part or all 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 determines that according to the channel quality of non-service cell base station which non-service cell base station need participate in MDC;
Base station in service sector determines 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, determine 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, determine that this non-service cell base station need participate in MDC.The MDC that the non-service cell base station need participate in can be traditional MDC, 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 in the following way: when base station in service sector participates 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 by other message.In the present embodiment, non-service cell base station a need participate in MDC, so base station in service sector sends indication information A to a.
Step 105: base station in service sector sends 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;
Other non-service cell base station except that the above-mentioned needs participation Improved MDC that determines in the Active Set all can be defined as not needing to participate in the non-service cell base station of Improved MDC.In the present embodiment, the non-service cell base station that does not need to participate in to strengthen 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 by other message.
Step 106: the non-service cell base station that receives indication information A participates in Improved MDC;
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,, notify the non-service cell base station that uplink user data is forwarded to base station in service sector by to carry out signaling in band or out of band etc. mutual with the non-service cell base station.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 by down control channel, adjusts the ascending power of UE, and demodulation is not carried out to uplink data channels in the non-service cell base station.
Embodiment two, determining according to the transmission bandwidth resource that needs participate in the non-service cell base station of MDC and to be example with Improved MDC, Improved IC, the grand diversity that embodiment of the present invention is provided merges and the comprehensive implementation method of Interference Control describes in conjunction with the accompanying drawings.Fig. 2 is that grand diversity merges and the comprehensive implementation method schematic diagram of Interference Control.
Step 201: base station in service sector is determined transmission bandwidth resource operating position;
For 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 judges that according to transmission bandwidth resource operating position 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 determining this newly-increased Active Set sub-district if when residue transmission bandwidth resource satisfies predefined thresholding.Pre-conditioned as if not satisfying this, determine that then the base station of this newly-increased Active Set sub-district does not need to participate in MDC.
Suppose that total bandwidth is B, if the current residual resource greater than certain thresholding, as 30%, so, determines that the base station of this newly-increased Active Set sub-district participates in MDC.Certainly, judgment condition can also be other threshold values, and perhaps, as foundation, present embodiment is not done qualification to this by 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 one by one judgement is carried out in newly-increased Active Set sub-district, and determine in view of the above whether it participates in MDC or carry out Interference Control, for simplicity, be not described in detail herein.
Embodiment three: carry out under the scene that strengthens Interference Control, may relate to switching, below in conjunction with accompanying drawing, present embodiment is described in detail.
If the non-service cell base station that the more close execution of user equipment (UE) strengthens Interference Control, 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, be when carrying out the non-service cell base station of Improved IC function in the more close base station of UE, base station in service sector and this non-service cell base station can be carried out soft handover, be reached the SRNS reorientation flow process that UE does not relate to 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, also the SRNS reorientation flow process that 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 send 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 sends.Reorientation cause value information based on up user face data is transmitted can be expressed as Relocation for UL UPDT.Core net also can send 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 specific implementation process of the SRNS reorientation flow process of mode.
Fig. 3 is the SRNS reorientation implementation procedure schematic diagram 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.
Comprise in this measurement report this UE more close, carry out the information of non-service cell base station of the Interference Control of enhancing.
When base station in service sector according to measurement report, when determining to satisfy switching condition, execution in step 303.
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.
Below in conjunction with accompanying drawing grand diversity merging and the comprehensively realization system of Interference Control that embodiment of the present invention provides described.
Fig. 4 is the structural representation of the grand diversity 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: determining unit 401 is used for determining that the UE Active Set needs to participate in the non-service cell base station of grand diversity MDC; Indicating member 402, be used for participating in the non-service cell base station transmission indication information of MDC to determining unit 401 needs, indicate this non-service cell base station that need participate in MDC to participate in the MDC operation, and, other non-service cell base station sends indication information 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 to participate in 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 determine which non-service cell base station need participate under the situation of MDC, determining unit 401 can comprise specifically that judgment sub-unit and definite subelement realize its function.This judgment sub-unit is used for judging whether current residual transmission bandwidth resource is higher than default thresholding when UE increases the Active Set non-service cell newly; Accordingly, should determine subelement, be used for when the judged result of described judgment sub-unit when being, determine that newly-increased non-service cell base station participates in the MDC operation, certainly, should determine subelement, can also be used for when the judged result of judgment sub-unit for not the time, determine that newly-increased non-service cell base station does not participate in MDC and operates.
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, determining 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 determining the channel quality of non-service cell base station according to receiving the measurement report that subelement receives; Accordingly, this determines subelement, is used for the channel quality according to the definite non-service cell base station of computation subunit, determines that channel quality satisfies pre-conditioned non-service cell base station participates in MDC as needs non-service cell base station.In addition, determining unit can also comprise the chooser unit, is used for selecting to activate concentrated part or whole sub-district, sends the measurement report indication to UE, and indication UE reports the measurement report of this sub-district of selecting.
As previously mentioned, indication information A represents that the MDC that participates in strengthening handles operation or starts traditional MDC and handles operation, and indication information B represents 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 herein.
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, 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 herein.
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:
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 determining section non-service cell base station in the embodiment of the present invention need participate 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 may cause, saved the transfer resource between the base station; And, because some non-service cell base stations do not need to participate in MDC, do not need to send uplink user data, therefore to base station in service sector, these non-service cell base stations can not need uplink user data is carried out demodulation, thereby have saved 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 that does not participate in MDC.
Though described the present invention by 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 (21)
1. a grand diversity merges and the comprehensive implementation method of Interference Control, is 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 described method comprises:
Base station in service sector determines to need in the UE Active Set to participate in the non-service cell base station that grand diversity merges MDC;
Base station in service sector sends indication information to the described non-service cell base station that needs to participate in MDC, indicates described non-service cell base station to participate in MDC;
Base station in service sector sends indication information in other non-service cell base station in Active Set, indicate described other non-service cell base stations to carry out the Interference Control operation, other non-service cell base station in the described Active Set is the non-service cell base station outside the non-service cell base station that needs to participate in MDC in the Active Set.
2. the method for claim 1 is characterized in that, the step that described base station in service sector need in the UE Active Set to be determined to participate in the non-service cell base station of MDC 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 default thresholding, determined then that described newly-increased non-service cell base station participates in MDC according to transmission bandwidth resource operating position.
3. the method for claim 1 is characterized in that, the step that described base station in service sector need in the UE Active Set to be determined to participate in the non-service cell base station of MDC comprises:
Base station in service sector receives the measurement report that UE reports;
Base station in service sector is determined the channel quality of non-service cell base station according to described measurement report;
Base station in service sector determines that according to the channel quality of described non-service cell base station channel quality satisfies pre-conditioned non-service cell base station participates in MDC as needs non-service cell base station.
4. method as claimed in claim 3 is characterized in that, the step of the measurement report that described base station in service sector reception UE reports comprises:
Increase or deletion or when replacing in the Active Set 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 described sub-district of selecting, and receives the measurement report that UE reports.
5. as claim 2 or 3 described methods, it is characterized in that the described non-service cell of described indication base station participates in MDC and comprises:
Indicate described non-service cell base station to participate in the MDC that strengthens, perhaps start traditional MDC.
6. method as claimed in claim 5 is characterized in that, the MDC of described enhancing comprises:
When base station in service sector judges that self received data is correct, described 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. as claim 2 or 3 described methods, it is characterized in that described other non-service cell base stations of described indication are carried out the Interference Control operation and comprised:
Indicate described 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. method as claimed in claim 7 is characterized in that, the Interference Control of described enhancing is handled operation and comprised:
Described non-service cell base station receives only and the demodulation ascending control channel, realizes the uplink power control to UE.
9. method as claimed in claim 7 is characterized in that, if the non-service cell base station of the Interference Control that the more close execution of UE strengthens, described method also comprises:
Base station in service sector is carried out the handover operation between base station in service sector and the described non-service cell base station according to the channel quality of described non-service cell base station.
10. method as claimed in claim 9 is characterized in that, the described 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. method as claimed in claim 10 is characterized in that, triggers SRNS reorientation flow process if described 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 described 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 described method also comprises:
Receive the target non-service cell base station of described re-positioning request, the uplink user data of beginning demodulation UE.
12. a base station is used to realize grand diversity and Interference Control, it is characterized in that, comprising:
Determining unit is used for determining that the UE Active Set needs to participate in the non-service cell base station of grand diversity MDC;
Indicating member, the non-service cell base station that the needs that are used for determining to described determining unit participate in MDC sends indication information, indicate described non-service cell base station to participate in MDC, and other non-service cell base station sends indication information in Active Set, indicate described other non-service cell base stations to carry out the Interference Control operation, other non-service cell base station in the described Active Set is the non-service cell base station outside the non-service cell base station that needs to participate in MDC in the Active Set.
13. base station as claimed in claim 12 is characterized in that, described determining unit comprises:
Judgment sub-unit is used for judging whether current residual transmission bandwidth resource is higher than default thresholding when UE increases the Active Set non-service cell newly;
Determine subelement, be used for when the judged result of described judgment sub-unit when being, determine that described newly-increased non-service cell base station participates in the MDC operation.
14. base station as claimed in claim 12 is characterized in that, described determining 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 described reception subelement, determines the channel quality of non-service cell base station;
Determine subelement, be used for channel quality, determine that channel quality satisfies pre-conditioned non-service cell base station participates in MDC as needs non-service cell base station according to the definite non-service cell base station of described computation subunit.
15. base station as claimed in claim 14 is characterized in that, described determining 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. base station as claimed in claim 12 is characterized in that, described MDC comprises the MDC of enhancing or traditional MDC, and described Interference Control operation comprises the Interference Control processing operation of enhancing, and perhaps traditional Interference Control is handled operation.
17. base station as claimed in claim 12 is characterized in that, described 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 described non-service cell base station;
Described non-service cell base station is the non-service cell base station of carrying out the Interference Control that strengthens.
18. a base station is used to realize grand diversity and Interference Control, it is characterized in that, comprising:
Receiving element is used to receive the indication information that base station in service sector is sent;
The MDC unit when indication information indication that is used for receiving when described receiving element participates in MDC, participates in MDC;
The Interference Control unit is used for carrying out the Interference Control operation when the indication information indication that described receiving element received, and carries out the Interference Control operation.
19. base station as claimed in claim 18 is characterized in that, described indication participates in the indication information of MDC and represents that the MDC that starts enhancing operates,
Described MDC unit comprises first subelement, is used for participating in the MDC operation that strengthens when the indication information of described indication participation MDC is represented to start the MDC operation of enhancing.
20. base station as claimed in claim 18 is characterized in that, the indication information of described indication execution Interference Control operation represents to carry out the Interference Control operation of enhancing,
Described Interference Control unit comprises second subelement, is used for receiving only and the demodulation ascending control channel when the indication information of described indication execution Interference Control operation is represented to carry out the Interference Control operation of enhancing, realizes the uplink power control to UE.
21. the comprehensive system that realizes of grand diversity and Interference Control comprises base station in service sector, non-service cell base station and user equipment (UE), it is characterized in that,
Described base station in service sector comprises:
Determining unit is used for determining that the UE Active Set needs to participate in the non-service cell base station of grand diversity MDC;
Indicating member, the non-service cell base station that the needs that are used for determining to described determining unit participate in MDC sends indication information, indicate described non-service cell base station to participate in MDC, and other non-service cell base station sends indication information in Active Set, indicate described other non-service cell base stations to carry out the Interference Control operation, other non-service cell base station in the described Active Set is the non-service cell base station outside the non-service cell base station that needs to participate in MDC in the Active Set;
Described non-service cell base station comprises:
Receiving element is used to receive the indication information that base station in service sector is sent;
The MDC unit when indication information indication that is used for receiving when described receiving element participates in MDC, participates in MDC;
The Interference Control unit is used for carrying out the Interference Control operation when the indication information indication that described receiving element received, and carries out the Interference Control operation.
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| CN2007100757045A CN101364826B (en) | 2007-08-08 | 2007-08-08 | Integrated realizing method, system and base station for macrodiversity incorporating and interference control |
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| CN2007100757045A CN101364826B (en) | 2007-08-08 | 2007-08-08 | Integrated realizing method, system and base station for macrodiversity incorporating and interference control |
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| CN101841399A (en) * | 2009-03-16 | 2010-09-22 | 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 |
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| 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 |
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| CN1160892C (en) * | 2000-11-23 | 2004-08-04 | 华为技术有限公司 | Macrodiversity method in CDMA communication system |
| CN1162028C (en) * | 2001-07-18 | 2004-08-11 | 华为技术有限公司 | Method for recognizing primary small region under selective diversity transmitting of base station |
| CN100433706C (en) * | 2005-03-28 | 2008-11-12 | 华为技术有限公司 | Uplink macrodiversity incorporating method |
| CN100428830C (en) * | 2006-08-08 | 2008-10-22 | 华为技术有限公司 | Method for inhibiting interference of neighborhood in mobile communication system and base station node |
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| CN101841399A (en) * | 2009-03-16 | 2010-09-22 | 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 |
| 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 |
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| 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 |
| WO2014043877A1 (en) * | 2012-09-20 | 2014-03-27 | 华为技术有限公司 | Uplink scheduling method and control node |
| US10057917B2 (en) | 2012-09-20 | 2018-08-21 | Huawei Technologies Co., Ltd. | Uplink scheduling method and control node |
| 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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