CN104244353A - Communication method, radio network controller, and user equipment - Google Patents
Communication method, radio network controller, and user equipment Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/16—Performing reselection for specific purposes
- H04W36/18—Performing reselection for specific purposes for allowing seamless reselection, e.g. soft reselection
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
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Abstract
The invention provides a communication method, a radio network controller, and user equipment. The method is used for soft handoff zone communication in a heterogeneous network; and the heterogeneous network includes a micro station and a macro station. The method comprises the following steps: when user equipment (UE) is detected to enter a soft handoff zone, a cell where the micro station is located is determined as a service cell of the UE, wherein the UE uplink signal receiving quality of the micro station is superior to the UE uplink signal receiving quality of the macro station; the macro station is configured with an almost blank subframe (ABS); and first information is sent to the micro station and second information is sent to the macro station, wherein the first information is used for indicating the micro station to send downlink data to the UE with the normal power at the ABS and the second information is used for indicating the macro station not to send downlink data at the ABS or reduce the sending power of the downlink data. According to the embodiment of the invention, the data transmission efficiency of the heterogeneous network soft handoff zone UE can be improved.
Description
Technical field
The present invention relates to the communication technology, particularly relate to a kind of communication means, radio network controller and subscriber equipment.
Background technology
At Conventional wide band code division multiple access (Wideband Code Division Multiple Access, in the soft switching process of WCDMA) system, subscriber equipment (User Equipment, UE) all communication link is kept with former base station and new base station, only have after stabilized communication is set up in subscriber equipment and new base station, just disconnect and the contacting of former base station.The effect of soft handover is that soft handover can obtain the macro diversity of transmitting uplink data simultaneously along with subscriber equipment moves the continuity keeping voice or transfer of data.
Heterogeneous network (Heterogeneous Networks, HetNet) is a kind of network configuration by macrocell and Microcell mixed deployment, in raising network capacity with expand in covering and have significant advantage.There is up-downgoing energy imbalance in heterogeneous network, specifically comprise: when the macro station signal power that UE receives is equal with micro-station signal power that this UE receives, position residing for this UE can be called descending balance point, because macro station transmitting power is large, micro-station transmitting power is little, this descending balance point will near micro-station, therefore, when UE sends upward signal at this descending balance point, power when power when macro station receives this upward signal and micro-station receive this upward signal is different, Here it is a kind of up-downgoing energy imbalance.Soft handover area refers to that UE receives the suitable region of multiple base station downlink signal quality, the region near normally descending balance point.Under the heterogeneous network network coverage, owing to there is up-downgoing energy imbalance in soft handover area, the UE in this region can be caused to face some potential problems, such as, the power of the upward signal that the UE that macro station receives sends is more weak, the power of the downstream signal that micro-station that UE receives sends may be more weak, and the downstream signal that micro-station that UE receives sends may be subject to the stronger interference of macro station.These potential problems, by making the data transmission efficiency of heterogeneous network soft handover area UE poor, affect Consumer's Experience.
Summary of the invention
In view of this, embodiments provide a kind of communication means, radio network controller and subscriber equipment, the problem that the data transmission efficiency in order to solve heterogeneous network soft handover area in prior art is poor.
First aspect, provides a kind of communication means, and for the soft handover area communication in heterogeneous network, described heterogeneous network comprises micro-station and macro station, comprising:
When detecting that user equipment (UE) enters soft handover area, community, place, described micro-station is defined as the Serving cell of described UE, wherein, the upward signal quality of reception of described micro-station to described UE is better than the upward signal quality of reception of described macro station to described UE;
For described macro station configures almost blank subframe ABS;
The first information is sent respectively to described micro-station, the second information is sent with to described macro station, the described first information is used to indicate described micro-standing on ABS and sends downlink data with normal power to described UE, and described second information is used to indicate the transmitted power that described macro station does not send downlink data or reduces downlink data on ABS.
In conjunction with first aspect, in the first possible implementation of first aspect, the described first information also for:
Described UE is sent to by described micro-station, to indicate described UE in other subframes except ABS, absolute power according to the downward special physical channel DPCCH from described micro-station that other subframes described receive obtains power control commands word, and described power control commands word is used to indicate described micro-station adjustment down transmitting power.
In conjunction with the first possible implementation of first aspect or first aspect, in the implementation that the second of first aspect is possible, also comprise:
After receiving the 1d measurement report that described UE reported by described micro-station, ignore described 1d measurement report; Or,
Send radio resource control RRC signaling by described micro-station to described UE, described RRC signaling is used to indicate described UE and stops 1d affair and report.
In conjunction with the first of first aspect or first aspect to any one possible implementation of the second, in the third possible implementation of first aspect, described Serving cell community, place, described micro-station being defined as described UE, comprising:
If the Serving cell of described UE before entering soft handover area is community, place, micro-station, then Serving cell is kept to be that community, place, micro-station is constant after determining to enter soft handover area; Or,
If the Serving cell of described UE before entering soft handover area is community, macro station place, be then community, place, micro-station by Serving cell from macro station place cell merge after determining to enter soft handover area.
Second aspect, provides a kind of communication means, and for the soft handover area communication in heterogeneous network, described heterogeneous network comprises micro-station and macro station, comprising:
Measurement report is sent to radio network controller (RNC), described RNC is made to determine that UE enters soft handover area according to described measurement report, and when determining that described UE enters soft handover area, community, place, described micro-station is defined as the Serving cell of described UE, wherein, the upward signal quality of reception of described micro-station to described UE is better than the upward signal quality of reception of described macro station to described UE;
Receive the information of the almost blank subframe ABS that described RNC sends, on ABS, the downlink data that described micro-station sends with normal power is received according to the information of ABS, and downlink data ABS not having described macro station send or reduce the downlink data that power sends for described macro station.
In conjunction with second aspect, in the first possible implementation of second aspect, also comprise:
According to the information of described ABS in other subframe except ABS, absolute power according to the downward special physical channel DPCCH from described micro-station that other subframe described receives obtains power control commands word, and described power control commands word is used to indicate described micro-station adjustment down transmitting power.
In conjunction with the first possible implementation of second aspect or second aspect, in the implementation that the second of second aspect is possible, also comprise:
When Serving cell changes, launch up DPCCH according to predetermined power hop value, the absolute value of described power hop value is greater than the step value that described UE carries out when power controls to described up DPCCH.
In conjunction with the implementation that the second of second aspect is possible, in the third possible implementation of second aspect,
When the Serving cell of described UE is described community, place, micro-station from described macro station place cell merge, described power hop value is downward saltus step, and the transmitting power of described up DPCCH is reduced fast; Or,
When the Serving cell of described UE is described community, macro station place from place, described micro-station cell merge, described power hop value is upwards saltus step, and the transmitting power of described up DPCCH is increased fast.
In conjunction with the first of second aspect or second aspect to the third any one possible implementation, in the 4th kind of possible implementation of second aspect, also comprise:
Send 1d measurement report by described micro-station to described RNC, make described RNC ignore described 1d measurement report; Or,
Receive the radio resource control RRC signaling that described RNC is sent by described micro-station, stop 1d affair according to described RRC signaling and report.
The third aspect, provides a kind of radio network controller (RNC), and for the soft handover area communication in heterogeneous network, described heterogeneous network comprises micro-station and macro station, comprising:
Processor, for when detecting that user equipment (UE) enters soft handover area, community, place, described micro-station is defined as the Serving cell of described UE, and, for described macro station configures almost blank subframe ABS, wherein, the upward signal quality of reception of described micro-station to described UE is better than the upward signal quality of reception of described macro station to described UE;
Transmitter, for sending the first information respectively to described micro-station, the second information is sent with to described macro station, the described first information is used to indicate described micro-standing on ABS and sends downlink data with normal power to described UE, and described second information is used to indicate the transmitted power that described macro station does not send downlink data or reduces downlink data on ABS.
In conjunction with the third aspect, in the first possible implementation of the third aspect, the described first information that described transmitter sends also for:
Described UE is sent to by described micro-station, to indicate described UE in other subframes except ABS, absolute power according to the downward special physical channel DPCCH from described micro-station that other subframes described receive obtains power control commands word, and described power control commands word is used to indicate described micro-station adjustment down transmitting power.
In conjunction with the first possible implementation of the third aspect or the third aspect, in the implementation that the second of the third aspect is possible,
Described RNC also comprises receiver, the 1d measurement report that described receiver is reported by described micro-station for receiving described UE, and described processor also for after receiving described 1d measurement report at described receiver, ignores described 1d measurement report; Or,
Described transmitter is also for sending radio resource control RRC signaling by described micro-station to described UE, and described RRC signaling is used to indicate described UE and stops 1d affair and report.
In conjunction with the first of the third aspect or the third aspect to any one possible implementation of the second, in the third possible implementation of the third aspect, community, place, described micro-station is defined as the Serving cell of described UE by described processor, comprising:
If the Serving cell of described UE before entering soft handover area is community, place, micro-station, then Serving cell is kept to be that community, place, micro-station is constant after determining to enter soft handover area; Or,
If the Serving cell of described UE before entering soft handover area is community, macro station place, be then community, place, micro-station by Serving cell from macro station place cell merge after determining to enter soft handover area.
Fourth aspect, provides a kind of user equipment (UE), and for the soft handover area communication in heterogeneous network, described heterogeneous network comprises micro-station and macro station, comprising:
Transmitter, for sending measurement report to radio network controller (RNC), described RNC is made to determine that UE enters soft handover area according to described measurement report, and when determining that described UE enters soft handover area, community, place, described micro-station is defined as the Serving cell of described UE, wherein, the upward signal quality of reception of described micro-station to described UE is better than the upward signal quality of reception of described macro station to described UE;
Receiver, for receiving the information of the almost blank subframe ABS that described RNC sends, on ABS, the downlink data that described micro-station sends with normal power is received according to the information of ABS, and downlink data ABS not having described macro station send or reduce the downlink data that power sends for described macro station.
In conjunction with fourth aspect, in the first possible implementation of fourth aspect, also comprise:
Processor, for according to the information of described ABS in other subframe except ABS, absolute power according to the downward special physical channel DPCCH from described micro-station that other subframe described receives obtains power control commands word, and described power control commands word is used to indicate described micro-station adjustment down transmitting power.
In conjunction with the first possible implementation of fourth aspect or fourth aspect, in the implementation that the second of fourth aspect is possible, described transmitter also for:
When Serving cell changes, launch up DPCCH according to predetermined power hop value, the absolute value of described power hop value is greater than the step value that described UE carries out when power controls to described up DPCCH.
In conjunction with the implementation that the second of fourth aspect is possible, in the third possible implementation of fourth aspect, described transmitter specifically for:
When the Serving cell of described UE is described community, place, micro-station from described macro station place cell merge, up DPCCH is launched according to predetermined power hop value, the absolute value of described power hop value is greater than the step value that described UE carries out when power controls to described up DPCCH, and described power hop value is downward saltus step, the transmitting power of described up DPCCH is reduced fast; Or,
When the Serving cell of described UE is described community, macro station place from place, described micro-station cell merge, up DPCCH is launched according to predetermined power hop value, the absolute value of described power hop value is greater than the step value that described UE carries out when power controls to described up DPCCH, and described power hop value is upwards saltus step, the transmitting power of described up DPCCH is increased fast.
In conjunction with the first of fourth aspect or fourth aspect to the third any one possible implementation, in the 4th kind of possible implementation of fourth aspect,
Described transmitter also for: send 1d measurement report by described micro-station to described RNC, make described RNC ignore described 1d measurement report; Or,
Described receiver also for: receive the radio resource control RRC signaling that described RNC is sent by described micro-station, to stop 1d affair according to described RRC signaling and to report.
By technique scheme, when UE enters soft handover area, community, place, micro-station is defined as the Serving cell of UE, UE can be made uplink control data to be sent to the good community of the quality of reception, the transmission quality of uplink control data can be improved; In addition, by configuring the information of ABS, on community, place, micro-station, normally can send downlink data, community, macro station place not sending downlink data or reduces power transmission downlink data, the interference of macro station to micro-station can be reduced, improve the transmission quality of downlink data.Therefore, by above-mentioned process, the communication quality of soft handover area UE can be improved.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, below the accompanying drawing used required in describing embodiment is briefly described, apparently, accompanying drawing in the following describes is some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of a kind of heterogeneous network in the embodiment of the present invention;
The schematic flow sheet of a kind of communication means that Fig. 2 provides for the embodiment of the present invention;
The schematic flow sheet of the another kind of communication means that Fig. 3 provides for the embodiment of the present invention;
Fig. 4 is the DPC transmission time sequence schematic diagram introducing soft handover area after ABS in the embodiment of the present invention;
The schematic flow sheet of the another kind of communication means that Fig. 5 provides for the embodiment of the present invention;
The schematic flow sheet of the another kind of communication means that Fig. 6 provides for the embodiment of the present invention;
The structural representation of a kind of RNC that Fig. 7 provides for the embodiment of the present invention;
The structural representation of the another kind of RNC that Fig. 8 provides for the embodiment of the present invention;
The structural representation of a kind of UE that Fig. 9 provides for the embodiment of the present invention;
The structural representation of the another kind of UE that Figure 10 provides for the embodiment of the present invention.
Embodiment
For making the object of the embodiment of the present invention, technical scheme and advantage clearly, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
See Fig. 1, for the structural representation of heterogeneous network, this heterogeneous network comprises macro station 11 and micro-station 12, the overlay area of macro station represents with 111, the overlay area at micro-station represents with 121, and the overlay area of macro station can be called macrocell, and the overlay area at micro-station can be called Microcell, the scope of macrocell is greater than Microcell, and macrocell comprises Microcell.The upward signal quality of reception of micro-station to UE is better than the upward signal quality of reception of macro station to this UE.The loop wire that descending balance point is formed represents with 13, and soft handover area is expressed as the region of filling, and its boundary line can be expressed as 141 and 142.As can be seen from Figure 1, when UE15 is positioned at soft handover area, it is comparatively near apart from micro-station, and therefore, when UE sends upward signal, the upward signal received power of macro station is less; In addition when UE is in the soft handover area near macro station, during region namely between loop wire 13 and loop wire 142, the downstream signal power that UE receives macro station transmission is greater than the downstream signal power receiving micro-station and send, and namely receives micro-station downstream signal power more weak, and is subject to the comparatively strong jamming of macro station.Above-mentioned soft handover area Problems existing will affect data transmission efficiency, and then affect Consumer's Experience, and for addressing these problems, the present invention provides following embodiment.
The schematic flow sheet of a kind of communication means that Fig. 2 provides for the embodiment of the present invention, this communication means may be used for the soft handover area communication in heterogeneous network, and this heterogeneous network comprises micro-station and macro station, and the method comprises:
21: radio network controller (Radio Network Controller, when RNC) detecting that UE enters soft handover area, community, place, described micro-station is defined as the Serving cell of described UE, wherein, the upward signal quality of reception of described micro-station to described UE is better than the upward signal quality of reception of described macro station to described UE;
Optionally, described Serving cell community, place, described micro-station being defined as described UE, comprising:
If the Serving cell of described UE before entering soft handover area is community, place, micro-station, then Serving cell is kept to be that community, place, micro-station is constant after determining to enter soft handover area; Or,
If the Serving cell of described UE before entering soft handover area is community, macro station place, be then community, place, micro-station by Serving cell from macro station place cell merge after determining to enter soft handover area.
In addition, for the original Serving cell of UE for macrocell, unlike the prior art, the embodiment of the present invention, when UE enters soft handover area, just carries out the switching of Serving cell, such as, see Fig. 1, when UE enters boundary line 142, Serving cell just switches to Microcell from macrocell.And in prior art, it is occur in descending balance point that Serving cell switches, namely just carry out Serving cell switching when UE enters loop wire 13.
By just carrying out the switching of Serving cell when UE enters soft handover area, the more weak problem caused of macro station uplink received power can be solved, such as, when Serving cell is still macrocell, because macro station uplink received power is more weak, uplink feedback data transmission reliability will be caused poor, and service quality is affected.And Serving cell is defined as Microcell, because the uplink received power at micro-station is comparatively strong, can ensure that uplink feedback data transmits, and improves service quality.
22: described RNC is that described macro station configures almost blank subframe (Almost Blank Subframe, ABS);
23: described RNC sends the first information respectively to described micro-station, the second information is sent with to described macro station, the described first information is used to indicate described micro-standing on ABS and sends downlink data with normal power to described UE, and described second information is used to indicate the transmitted power that described macro station does not send downlink data or reduces downlink data on ABS.
Wherein, RNC can configure ABS, and on ABS, macro station does not send or reduces power and sends downlink data, and micro-station sends downlink data with normal power.Normal power can refer to that the power according to configuring is launched, and the power that the power that reduction power emission can refer to configure is low is launched.So just can avoid the descending interference that macro station causes micro-station, may be more weak to solve micro-station downstream signal power, and the descending problem that may be subject to the stronger interference of macro station.
Be understandable that, the ABS between RNC and macro station, and the ABS between RNC and micro-station, the subframe with same time section can be referred to.
Optionally, the described first information also for:
Described UE is sent to by described micro-station, to indicate described UE in other subframes except ABS, absolute power according to the downward special physical channel DPCCH from described Microcell that other subframes described receive obtains power control commands word, and described power control commands word is used to indicate described micro-station adjustment down transmitting power.
Optionally, the method also comprises:
Described RNC, after receiving the 1d measurement report that described UE reported by described micro-station, ignores described 1d measurement report; Or,
Described RNC sends RRC signaling by described micro-station to described UE, and described RRC signaling is used to indicate described UE and stops 1d affair and report.
Wherein, above-mentioned 1d measurement report of ignoring can refer to and abandons 1d measurement report, or does not process according to 1d measurement report.
Accordingly, the flow process that UE side performs see Fig. 3, can comprise:
31:UE sends measurement report to RNC, described RNC is made to determine that UE enters soft handover area according to described measurement report, and when determining that described UE enters soft handover area, community, place, described micro-station is defined as the Serving cell of described UE, wherein, the upward signal quality of reception of described micro-station to described UE is better than the upward signal quality of reception of described macro station to described UE;
32: described UE receives the information of ABS that described RNC sends, on ABS, the downlink data that described micro-station sends with normal power is received according to the information of ABS, and the ABS downlink data that do not have described macro station to send or reduce the downlink data that power sends for described macro station.
Optionally, the method also comprises:
Described UE according to the information of described ABS in other subframe except ABS, absolute power according to the downward special physical channel DPCCH from described micro-station that other subframe described receives obtains power control commands word, and described power control commands word is used to indicate described micro-station adjustment down transmitting power.
Optionally, the method also comprises:
Described UE, when Serving cell changes, launches up DPCCH according to predetermined power hop value, and the absolute value of described power hop value is greater than the step value that described UE carries out when power controls to described up DPCCH.
Optionally, when the Serving cell of described UE is described community, place, micro-station from described macro station place cell merge, described power hop value is downward saltus step, and the transmitting power of described up DPCCH is reduced fast;
Or,
When the Serving cell of described UE is described community, macro station place from place, described micro-station cell merge, described power hop value is upwards saltus step, and the transmitting power of described up DPCCH is increased fast.
Optionally, the method also comprises:
Described UE sends 1d measurement report by described micro-station to described RNC, makes described RNC ignore described 1d measurement report; Or,
Described UE receives the radio resource control RRC signaling that described RNC is sent by described micro-station, stops 1d affair according to described RRC signaling and reports.
As shown in Figure 4, for the DPA transmission time sequence schematic diagram of soft handover area after introducing ABS, see Fig. 4, the subframe ABS and non-ABS respectively of macro station, in ABS, macro station does not send downlink data, and in non-ABS, macro station sends downlink data, wherein, the filling of macro station transmission downlink data represents in the diagram, does not send downlink data blank and represents.The downstream signal that micro-station sends comprises Common Pilot Channel (Common Pilot Channel, CPICH), High-Speed Shared Control Channel (High Speed Shared Control Channel, HS-SCCH), high-speed physical downlink shared channel (HS-PDSCH) (High Speed Physical Downlink Shared Channel, and downward special physical channel (Dedicated Physical Control Channel HS-PDSCH), DPCCH), as shown in Figure 4, HS-SCCH and HS-PDSCH will send in ABS.Be understandable that, because CPICH and DL-DPCH belongs to control signal, its transmission needs to run through the whole transmission cycle, and therefore, it also can send on non-ABS.In addition, the downlink data that above-mentioned macro station and micro-station send can refer to the data not needing to run through the whole transmission cycle, such as, HS-SCCH and HS-PDSCH.
In UE side, through time delay t
pafter, UE can receive HS-PDSCH and DL-DPCH that micro-station sends, and is understandable that, UE also can receive the HS-SCCH that micro-station sends, but not shown in the diagram.In addition, UE side also can send upward signal to micro-station, this upward signal comprises uplink special physical channel (Uplink Dedicated Physical Channel, and feedback information UL-DPCH), feedback information comprises confirmation and replys/deny response (Acknowledgement/Negative-acknowledgement, ACK/NACK) information and channel quality instruction (Channel Quality Indicator, CQI).
The upward signal that UE sends is through time delay t
pafter, can arrive micro-station, micro-station can send HS-SCCH and HS-PDSCH of next time according to feedback information.
By UE, the present embodiment just determines that when entering soft handover area Serving cell is Microcell, UE can be made to send to Microcell by needing the upstream data sending to Serving cell, the upward signal quality of reception due to micro-station is better than the upward signal quality of reception of macro station, can improve the efficiency of transmission of upstream data; In addition, the present embodiment is by the information of configuration ABS, and macro station does not send data or reduces power and sends data on ABS, and micro-normal power that to stand in this ABS on sends data, and macro station can be avoided the strong jamming at micro-station, the efficiency of transmission of raising downlink data.Therefore, by above-mentioned process, can data transmission efficiency be improved, improve communication quality.
The schematic flow sheet of the communication means of soft handover area in the another kind of heterogeneous network that Fig. 5 provides for the embodiment of the present invention, heterogeneous network in the present embodiment comprises macro station and micro-station, and macro station does not send data on ABS, the present embodiment is mobile to micro-station from macro station for UE, and the present embodiment comprises:
The Survey control message that 501:UE provides according to RNC, performs common frequency measurement.When UE finds that the radio signal quality of certain co-frequency cell improves and enters the reporting range of RNC, UE is to RNC reporting measurement reports.
After 502:RNC receives the measurement report that UE reports, judge that UE is the need of carrying out soft handover according to situations such as the loads of Target cell.
The particular content of above-mentioned 501 ~ 502 can adopt the corresponding flow process of existing soft handover.
503:RNC is when judging that UE needs to carry out soft handover, and the information of configuration ABS, and switches to Microcell by the Serving cell of UE by macrocell, and adds new wireless link information for UE.In addition, this flow process can be terminated when judging that UE does not need to carry out soft handover.
Unlike the prior art, the present embodiment, when UE needs to carry out soft handover, can configure the information of ABS, and can carry out the switching of Serving cell immediately.
504:RNC sends request the message of the new wireless link of configuration to micro-station, be micro-station distributing radio resource simultaneously.
505:RNC sends the information of ABS respectively to macro station and micro-station.
506:RNC sends lastest imformation to UE and carries out activating set updating to indicate UE, the frame configuration of the scrambler of new wireless link use, channel code, physical channel is not only comprised in this lastest imformation, unlike the prior art, also to comprise information and the Serving cell ID of the ABS of macro station, wherein, Serving cell ID refers to the mark at micro-station.
507:UE, according to this lastest imformation, brings into use new wireless link, is added in Active Set by new wireless link, and, micro-station is set to serving BS, communicates with micro-station with macro station according to the information of ABS.
When 508:UE uses new wireless link, predetermined power hop value is adopted to send up DPCCH.
This power hop value refers to that transmit power variation value when launching up DPCCH is greater than existing power change steps value, and such as, existing take 1dB as step-length, and this power hop value of the present embodiment can be 5dB, and concrete numerical value can configure.By the desired value adopting power hop value can meet the Serving cell after switching faster when Serving cell switches.Owing to being switch from macro station to micro-station in the present embodiment, the ascending power that micro-station receives is more and more stronger, the uplink transmission power of UE can be made to reduce when power controls, therefore, certain transmission power level sending up DPCCH is than sending the transmission power level of up DPCCH last time by this power hop value of reduction.
509: the power control commands word that micro-station reports according to UE carries out power control.
Wherein, power control commands word can refer to TPC, and micro-station can increase according to this TPC or reduce the transmission power level of descending DPCCH.
UE by comparing reception value and desired value, can obtain TPC according to comparative result, such as, when reception value is larger than desired value, can obtain indicating the TPC reducing transmitting power, or reception value and desired value hour, can obtain indicating the TPC increasing transmitting power.
Interval at ABS, owing to can not be subject to the interference of macro station, the numerical value compared can be SINR, and that is above-mentioned reception value refers to SINR value when receiving descending DPCCH, and above-mentioned desired value refers to the desired value of default SINR.If reception value is greater than desired value, can generates and be used to indicate the TPC that micro-station reduces down transmitting power, if reception value is less than desired value, can generates and be used to indicate the TPC that down transmitting power is improved at micro-station.
Interval at non-ABS, due to the interference of macro station can be subject to, namely SINR value can be subject to the impact of macro station, the numerical value now compared can be the absolute power of pilot tone in descending DPCCH, that is the absolute power of this descending DPCCH when above-mentioned reception value refers to and receives descending DPCCH, above-mentioned desired value refers to the desired value of default absolute power.If reception value is greater than desired value, can generates and be used to indicate the TPC that micro-station reduces down transmitting power, if reception value is less than desired value, can generates and be used to indicate the TPC that down transmitting power is improved at micro-station.
510:RNC ignores the 1d measurement report that UE reports, or RNC sends RRC signaling to UE, stops reporting 1d measurement report to indicate UE.
Wherein, 1d measurement report sends to RNC after UE upgrades Serving cell, and such as, see Fig. 1, in prior art, when UE moves into loop wire 13 from macro station to micro-station, UE can report 1d measurement report to RNC.But because the present embodiment has just carried out service cell updating when UE enters soft handover area, therefore, RNC can ignore this 1d measurement report, specifically can abandon or indicate UE to stop sending this 1d measurement report.
Be understandable that, RNC abandons 1d measurement report can refer to that RNC receives 1d measurement report but do not process according to 1d measurement report, does not namely carry out service cell updating according to 1d measurement report.
511:RNC receive UE send 1b measurement report time, maintenance Serving cell is Microcell, backed off after random soft handover.
Wherein, 1b measurement report is that UE detects that the downlink reception power difference of a base station sends after preset value, after RNC receives this 1b measurement report, community stronger for the downlink reception power of UE is set to Serving cell.That UE is mobile to micro-station from macro station in the present embodiment, therefore, 1b measurement report is that UE detects that the downstream signal difference that macro station sends sends to during setting degree, such as, UE sends when loop wire 141, the community that the downlink reception power of UE is stronger is Microcell, therefore the Serving cell that RNC is arranged after receiving this 1b measurement report is Microcell, serving BS is micro-station in other words, again due to UE before enter soft handover area time Serving cell switch to Microcell, therefore now belong to and keep Microcell constant.
The present embodiment just carries out Serving cell switching by UE when entering soft handover area, can improve the efficiency of transfer of data, expands the coverage at micro-station; By the uplink transmission power adopting hop mode to change UE, the power step-out that up DPCCH can be avoided to produce or interference; By the absolute power at the interval more descending DPCCH of non-ABS, the power lifting of the unnecessary DPCCH at micro-station can be reduced, reduce the down transmitting power at micro-station.
The schematic flow sheet of the communication means of soft handover area in the another kind of heterogeneous network that Fig. 6 provides for the embodiment of the present invention, heterogeneous network in the present embodiment comprises macro station and micro-station, and macro station does not send data on ABS, the present embodiment moves to macro station from micro-station for UE, and the present embodiment comprises:
The Survey control message that 601:UE provides according to RNC, performs common frequency measurement.When UE finds that the radio signal quality of certain co-frequency cell improves and enters the reporting range of RNC, UE is to RNC reporting measurement reports.
After 602:RNC receives the measurement report that UE reports, judge that UE is the need of carrying out soft handover according to situations such as the loads of Target cell.
603:RNC is when judging that UE needs to carry out soft handover, and the information of configuration ABS, and keeps the Serving cell of UE to be that Microcell is constant, and adds new wireless link information for UE.
604:RNC sends request the message of the new wireless link of configuration to micro-station, be micro-station distributing radio resource simultaneously.
605:RNC sends the information of ABS respectively to macro station and micro-station.
606:RNC sends lastest imformation to UE and carries out activating set updating to indicate UE, the frame configuration of the scrambler of new wireless link use, channel code, physical channel is not only comprised in this lastest imformation, unlike the prior art, also to comprise information and the Serving cell ID of the ABS of macro station, wherein, Serving cell ID refers to the mark at micro-station.
607:UE, according to this lastest imformation, brings into use new wireless link, is added in Active Set by new wireless link, and, micro-station is set to serving BS, communicates with micro-station with macro station according to the information of ABS.
608: the power control commands word that micro-station reports according to UE carries out power control.
Wherein, power control commands word can refer to TPC, and micro-station can increase according to this TPC or reduce the transmission power level of descending DPCCH.
UE by comparing reception value and desired value, can obtain TPC according to comparative result, such as, when reception value is larger than desired value, can obtain indicating the TPC reducing transmitting power, or reception value and desired value hour, can obtain indicating the TPC increasing transmitting power.
Interval at ABS, owing to can not be subject to the interference of macro station, the numerical value compared can be SINR, and that is above-mentioned reception value refers to SINR value when receiving descending DPCCH, and above-mentioned desired value refers to the desired value of default SINR.If reception value is greater than desired value, can generates and be used to indicate the TPC that micro-station reduces down transmitting power, if reception value is less than desired value, can generates and be used to indicate the TPC that down transmitting power is improved at micro-station.
Interval at non-ABS, due to the interference of macro station can be subject to, namely SINR value can be subject to the impact of macro station, the numerical value now compared can be the absolute power of pilot tone in descending DPCCH, that is the absolute power of this descending DPCCH when above-mentioned reception value refers to and receives descending DPCCH, above-mentioned desired value refers to the desired value of default absolute power.If reception value is greater than desired value, can generates and be used to indicate the TPC that micro-station reduces down transmitting power, if reception value is less than desired value, can generates and be used to indicate the TPC that down transmitting power is improved at micro-station.
609:RNC ignores the 1d measurement report that UE reports, or RNC sends RRC signaling to UE, stops reporting 1d measurement report to indicate UE.
When 610:RNC receives the 1b measurement report that UE sends, Serving cell is switched to macrocell by Microcell, and indicates UE to adopt power hop value to send up DPCCH, backed off after random soft handover.
With a upper embodiment unlike, because the present embodiment moves from micro-station to macro station, therefore UE send 1b measurement report be UE measure Microcell downstream signal difference to a certain extent time send, such as, UE sends at loop wire 142, now, Serving cell can be switched to macrocell by Microcell.Because Serving cell switches, in order to Fast Convergent, UE can adopt hop mode to launch up DPCCH, and particular content can associated description in 508.
Be understandable that, the particular content in 601 ~ 610 can see the associated description in 501 ~ 511.
The present embodiment keeps Serving cell to be Microcell by UE when soft handover area, can improve the efficiency of transfer of data, expand the coverage at micro-station; By the uplink transmission power adopting hop mode to change UE, the power step-out that up DPCCH can be avoided to produce or interference; By the absolute power at the interval more descending DPCCH of non-ABS, the power lifting of the unnecessary DPCCH at micro-station can be reduced, reduce the down transmitting power at micro-station.
The structural representation of a kind of RNC that Fig. 7 provides for the embodiment of the present invention, this RNC may be used for the soft handover area communication in heterogeneous network, and this heterogeneous network comprises micro-station and macro station, and this RNC70 comprises processor 71 and transmitter 72; Processor 71 is for when detecting that UE enters soft handover area, community, place, described micro-station is defined as the Serving cell of described UE, and, for described macrocell station configuration ABS, described heterogeneous network comprises Microcell and macrocell wherein, and the upward signal quality of reception of station, described Microcell to described UE is better than the upward signal quality of reception of described macrocell station to described UE; Transmitter 72 is for sending the first information respectively to station, described Microcell, the second information is sent with to described macrocell station, the described first information is used to indicate described Microcell and stands on ABS and send downlink data with normal power to described UE, and described second information is used to indicate described macrocell and stands in transmitted power ABS not sending downlink data or reduce downlink data.
Optionally, the described first information that sends of described transmitter 72 also for:
Described UE is sent to by described micro-station, to indicate described UE in other subframes except ABS, absolute power according to the downward special physical channel DPCCH from described Microcell that other subframes described receive obtains power control commands word, and described power control commands word is used to indicate described micro-station adjustment down transmitting power.
Optionally, see Fig. 8, this RNC70 also comprises receiver 73, the 1d measurement report that described receiver 73 is reported by described micro-station for receiving described UE, described processor also for after receiving described 1d measurement report at described receiver, ignores described 1d measurement report; Or,
Described transmitter 72 is also for sending RRC signaling by described micro-station to described UE, and described RRC signaling is used to indicate described UE and stops 1d affair and report.
Optionally, community, place, micro-station is defined as the Serving cell of described UE by described processor 71, comprising:
If the Serving cell of described UE before entering soft handover area is community, place, micro-station, then Serving cell is kept to be that community, place, micro-station is constant after determining to enter soft handover area; Or,
If the Serving cell of described UE before entering soft handover area is community, macro station place, be then community, place, micro-station by Serving cell from macro station place cell merge after determining to enter soft handover area.
On hardware implementing, above-mentioned processor can be CPU (CPU), microprocessor, single-chip microcomputer etc., and above-mentioned transmitter, receiver can be as a whole, are specifically as follows transceiver.Certainly, this RNC can also comprise the universal components such as memory, antenna, baseband process component, middle radio frequency processing parts, input/output unit, and the embodiment of the present invention is in this no longer any restriction.
By UE, the present embodiment just determines that when entering soft handover area Serving cell is Microcell, UE can be made to send to Microcell by needing the upstream data sending to Serving cell, the upward signal quality of reception due to micro-station is better than the upward signal quality of reception of macro station, can improve the efficiency of transmission of upstream data; In addition, the present embodiment is by the information of configuration ABS, and macro station does not send data or reduces power and sends data on ABS, and micro-normal power that to stand in this ABS on sends data, and macro station can be avoided the strong jamming at micro-station, the efficiency of transmission of raising downlink data.Therefore, by above-mentioned process, can data transmission efficiency be improved, improve communication quality.
The structural representation of a kind of UE that Fig. 9 provides for the embodiment of the present invention, this UE may be used for the soft handover area communication in heterogeneous network, and this heterogeneous network comprises micro-station and macro station, and this UE90 comprises transmitter 91 and receiver 92; Transmitter 91 is for sending measurement report to RNC, described RNC is made to determine that UE enters soft handover area according to described measurement report, and when determining that described UE enters soft handover area, community, place, described micro-station is defined as the Serving cell of described UE, described heterogeneous network comprises Microcell and macrocell wherein, and the upward signal quality of reception of station, described Microcell to described UE is better than the upward signal quality of reception of described macrocell station to described UE; Receiver 92 is for receiving the information of the ABS of described RNC transmission, on ABS, the downlink data that station, described Microcell sends with normal power is received according to the information of ABS, and downlink data ABS not having described macrocell station send or reduce the downlink data that power sends for described macrocell station.
Optionally, see Figure 10, this UE also comprises:
Processor 93, for according to the information of described ABS in other subframe except ABS, absolute power according to stating the DPCCH from described micro-station that other subframe receives obtains power control commands word, and described power control commands word is used to indicate described micro-station adjustment down transmitting power.
Optionally, described transmitter 91 also for:
When Serving cell changes, launch up DPCCH according to predetermined power hop value, the absolute value of described power hop value is greater than the step value that described UE carries out when power controls to described up DPCCH.
Optionally, described transmitter 91 specifically for:
When the Serving cell of described UE is described community, place, micro-station from described macro station place cell merge, up DPCCH is launched according to predetermined power hop value, the absolute value of described power hop value is greater than the step value that described UE carries out when power controls to described up DPCCH, and described power hop value is downward saltus step, the transmitting power of described up DPCCH is reduced fast; Or,
When the Serving cell of described UE is described community, macro station place from place, described micro-station cell merge, up DPCCH is launched according to predetermined power hop value, the absolute value of described power hop value is greater than the step value that described UE carries out when power controls to described up DPCCH, and described power hop value is upwards saltus step, the transmitting power of described up DPCCH is increased fast.
Optionally, described transmitter 91 also for: send 1d measurement report by described micro-station to described RNC, make described RNC ignore described 1d measurement report; Or,
Described receiver 92 also for: receive the radio resource control RRC signaling that described RNC is sent by described micro-station, to stop 1d affair according to described RRC signaling and to report.
On hardware implementing, above-mentioned processor can be CPU (CPU), microprocessor, single-chip microcomputer etc., and above-mentioned transmitter, receiver can be as a whole, are specifically as follows transceiver.Certainly, this RNC can also comprise the universal components such as memory, antenna, baseband process component, middle radio frequency processing parts, input/output unit, and the embodiment of the present invention is in this no longer any restriction.
By UE, the present embodiment just determines that when entering soft handover area Serving cell is Microcell, UE can be made to send to Microcell by needing the upstream data sending to Serving cell, the upward signal quality of reception due to micro-station is better than the upward signal quality of reception of macro station, can improve the efficiency of transmission of upstream data; In addition, the present embodiment is by the information of configuration ABS, and macro station does not send data or reduces power and sends data on ABS, and micro-normal power that to stand in this ABS on sends data, and macrocell can be avoided the strong jamming of Microcell, the efficiency of transmission of raising downlink data.Therefore, by above-mentioned process, can data transmission efficiency be improved, improve communication quality.
Those skilled in the art can be well understood to, for convenience and simplicity of description, only be illustrated with the division of above-mentioned each functional module, in practical application, can distribute as required and by above-mentioned functions and be completed by different functional modules, internal structure by device is divided into different functional modules, to complete all or part of function described above.The system of foregoing description, the specific works process of device and unit, with reference to the corresponding process in preceding method embodiment, can not repeat them here.
In several embodiments that the application provides, should be understood that, disclosed system, apparatus and method, can realize by another way.Such as, device embodiment described above is only schematic, such as, the division of described module or unit, be only a kind of logic function to divide, actual can have other dividing mode when realizing, such as multiple unit or assembly can in conjunction with or another system can be integrated into, or some features can be ignored, or do not perform.Another point, shown or discussed coupling each other or direct-coupling or communication connection can be by some interfaces, and the indirect coupling of device or unit or communication connection can be electrical, machinery or other form.
The described unit illustrated as separating component or can may not be and physically separates, and the parts as unit display can be or may not be physical location, namely can be positioned at a place, or also can be distributed in multiple network element.Some or all of unit wherein can be selected according to the actual needs to realize the object of the present embodiment scheme.
In addition, each functional unit in each embodiment of the application can be integrated in a processing unit, also can be that the independent physics of unit exists, also can two or more unit in a unit integrated.Above-mentioned integrated unit both can adopt the form of hardware to realize, and the form of SFU software functional unit also can be adopted to realize.
If described integrated unit using the form of SFU software functional unit realize and as independently production marketing or use time, can be stored in a computer read/write memory medium.Based on such understanding, the part that the technical scheme of the application contributes to prior art in essence in other words or all or part of of this technical scheme can embody with the form of software product, this computer software product is stored in a storage medium, comprising some instructions in order to make a computer equipment (can be personal computer, server, or the network equipment etc.) or processor (processor) perform all or part of step of method described in each embodiment of the application.And aforesaid storage medium comprises: USB flash disk, portable hard drive, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic disc or CD etc. various can be program code stored medium.
The above, above embodiment only in order to the technical scheme of the application to be described, is not intended to limit; Although with reference to previous embodiment to present application has been detailed description, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the spirit and scope of each embodiment technical scheme of the application.
Claims (18)
1. a communication means, for the soft handover area communication in heterogeneous network, described heterogeneous network comprises micro-station and macro station, it is characterized in that, comprising:
When detecting that user equipment (UE) enters soft handover area, community, place, described micro-station is defined as the Serving cell of described UE, wherein, the upward signal quality of reception of described micro-station to described UE is better than the upward signal quality of reception of described macro station to described UE;
For described macro station configures almost blank subframe ABS;
The first information is sent respectively to described micro-station, the second information is sent with to described macro station, the described first information is used to indicate described micro-standing on ABS and sends downlink data with normal power to described UE, and described second information is used to indicate the transmitted power that described macro station does not send downlink data or reduces downlink data on ABS.
2. method according to claim 1, is characterized in that, the described first information also for:
Described UE is sent to by described micro-station, to indicate described UE in other subframes except ABS, absolute power according to the downward special physical channel DPCCH from described micro-station that other subframes described receive obtains power control commands word, and described power control commands word is used to indicate described micro-station adjustment down transmitting power.
3. the method according to any one of claim 1 to 2, is characterized in that, also comprises:
After receiving the 1d measurement report that described UE reported by described micro-station, ignore described 1d measurement report; Or,
Send radio resource control RRC signaling by described micro-station to described UE, described RRC signaling is used to indicate described UE and stops 1d affair and report.
4. the method according to any one of claims 1 to 3, is characterized in that, described Serving cell community, place, described micro-station being defined as described UE, comprising:
If the Serving cell of described UE before entering soft handover area is community, place, micro-station, then Serving cell is kept to be that community, place, micro-station is constant after determining to enter soft handover area; Or,
If the Serving cell of described UE before entering soft handover area is community, macro station place, be then community, place, micro-station by Serving cell from macro station place cell merge after determining to enter soft handover area.
5. a communication means, for the soft handover area communication in heterogeneous network, described heterogeneous network comprises micro-station and macro station, it is characterized in that, comprising:
Measurement report is sent to radio network controller (RNC), described RNC is made to determine that UE enters soft handover area according to described measurement report, and when determining that described UE enters soft handover area, community, place, described micro-station is defined as the Serving cell of described UE, wherein, the upward signal quality of reception of described micro-station to described UE is better than the upward signal quality of reception of described macro station to described UE;
Receive the information of the almost blank subframe ABS that described RNC sends, on ABS, the downlink data that described micro-station sends with normal power is received according to the information of ABS, and downlink data ABS not having described macro station send or reduce the downlink data that power sends for described macro station.
6. method according to claim 5, is characterized in that, also comprises:
According to the information of described ABS in other subframe except ABS, absolute power according to the downward special physical channel DPCCH from described micro-station that other subframe described receives obtains power control commands word, and described power control commands word is used to indicate described micro-station adjustment down transmitting power.
7. the method according to claim 5 or 6, is characterized in that, also comprises:
When Serving cell changes, launch up DPCCH according to predetermined power hop value, the absolute value of described power hop value is greater than the step value that described UE carries out when power controls to described up DPCCH.
8. method according to claim 7, is characterized in that,
When the Serving cell of described UE is described community, place, micro-station from described macro station place cell merge, described power hop value is downward saltus step, and the transmitting power of described up DPCCH is reduced fast; Or,
When the Serving cell of described UE is described community, macro station place from place, described micro-station cell merge, described power hop value is upwards saltus step, and the transmitting power of described up DPCCH is increased fast.
9. the method according to any one of claim 5 to 8, is characterized in that, also comprises:
Send 1d measurement report by described micro-station to described RNC, make described RNC ignore described 1d measurement report; Or,
Receive the radio resource control RRC signaling that described RNC is sent by described micro-station, stop 1d affair according to described RRC signaling and report.
10. a radio network controller (RNC), for the soft handover area communication in heterogeneous network, described heterogeneous network comprises micro-station and macro station, it is characterized in that, comprising:
Processor, for when detecting that user equipment (UE) enters soft handover area, community, place, described micro-station is defined as the Serving cell of described UE, and, for described macro station configures almost blank subframe ABS, wherein, the upward signal quality of reception of described micro-station to described UE is better than the upward signal quality of reception of described macro station to described UE;
Transmitter, for sending the first information respectively to described micro-station, the second information is sent with to described macro station, the described first information is used to indicate described micro-standing on ABS and sends downlink data with normal power to described UE, and described second information is used to indicate the transmitted power that described macro station does not send downlink data or reduces downlink data on ABS.
11. RNC according to claim 10, is characterized in that, the described first information that described transmitter sends also for:
Described UE is sent to by described micro-station, to indicate described UE in other subframes except ABS, absolute power according to the downward special physical channel DPCCH from described micro-station that other subframes described receive obtains power control commands word, and described power control commands word is used to indicate described micro-station adjustment down transmitting power.
12. RNC according to claim 10 or 11, is characterized in that,
Described RNC also comprises receiver, the 1d measurement report that described receiver is reported by described micro-station for receiving described UE, and described processor also for after receiving described 1d measurement report at described receiver, ignores described 1d measurement report; Or,
Described transmitter is also for sending radio resource control RRC signaling by described micro-station to described UE, and described RRC signaling is used to indicate described UE and stops 1d affair and report.
13., according to claim 10 to the RNC described in 12 any one, is characterized in that, community, place, described micro-station is defined as the Serving cell of described UE by described processor, comprising:
If the Serving cell of described UE before entering soft handover area is community, place, micro-station, then Serving cell is kept to be that community, place, micro-station is constant after determining to enter soft handover area; Or,
If the Serving cell of described UE before entering soft handover area is community, macro station place, be then community, place, micro-station by Serving cell from macro station place cell merge after determining to enter soft handover area.
14. 1 kinds of user equipment (UE)s, for the soft handover area communication in heterogeneous network, described heterogeneous network comprises micro-station and macro station, it is characterized in that, comprising:
Transmitter, for sending measurement report to radio network controller (RNC), described RNC is made to determine that UE enters soft handover area according to described measurement report, and when determining that described UE enters soft handover area, community, place, described micro-station is defined as the Serving cell of described UE, wherein, the upward signal quality of reception of described micro-station to described UE is better than the upward signal quality of reception of described macro station to described UE;
Receiver, for receiving the information of the almost blank subframe ABS that described RNC sends, on ABS, the downlink data that described micro-station sends with normal power is received according to the information of ABS, and downlink data ABS not having described macro station send or reduce the downlink data that power sends for described macro station.
15. UE according to claim 14, is characterized in that, also comprise:
Processor, for according to the information of described ABS in other subframe except ABS, absolute power according to the downward special physical channel DPCCH from described micro-station that other subframe described receives obtains power control commands word, and described power control commands word is used to indicate described micro-station adjustment down transmitting power.
16. UE according to claims 14 or 15, is characterized in that, described transmitter also for:
When Serving cell changes, launch up DPCCH according to predetermined power hop value, the absolute value of described power hop value is greater than the step value that described UE carries out when power controls to described up DPCCH.
17. UE according to claim 16, is characterized in that, described transmitter specifically for:
When the Serving cell of described UE is described community, place, micro-station from described macro station place cell merge, up DPCCH is launched according to predetermined power hop value, the absolute value of described power hop value is greater than the step value that described UE carries out when power controls to described up DPCCH, and described power hop value is downward saltus step, the transmitting power of described up DPCCH is reduced fast; Or,
When the Serving cell of described UE is described community, macro station place from place, described micro-station cell merge, up DPCCH is launched according to predetermined power hop value, the absolute value of described power hop value is greater than the step value that described UE carries out when power controls to described up DPCCH, and described power hop value is upwards saltus step, the transmitting power of described up DPCCH is increased fast.
18., according to claim 14 to the UE described in 17 any one, is characterized in that,
Described transmitter also for: send 1d measurement report by described micro-station to described RNC, make described RNC ignore described 1d measurement report; Or,
Described receiver also for: receive the radio resource control RRC signaling that described RNC is sent by described micro-station, to stop 1d affair according to described RRC signaling and to report.
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| WO2017143785A1 (en) * | 2016-02-25 | 2017-08-31 | 中兴通讯股份有限公司 | Method, device, and system for allocating resources based on wcdma heterogeneous network |
| WO2017157010A1 (en) * | 2016-03-15 | 2017-09-21 | 中兴通讯股份有限公司 | Cell handover method and device, and radio network controller |
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| WO2014194799A1 (en) | 2014-12-11 |
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