CN1909407B - Configuration method and system for laminating district and sending diversity mode - Google Patents
Configuration method and system for laminating district and sending diversity mode Download PDFInfo
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Abstract
The invention relates to a method for setting laminated region and emission group mode, to make the laminated regions in different levels obtain more property increment via emission group, wherein the different laminated levels are relative to the regions with different cover areas; the region belonging to the first level group uses the open emission group mode; the region belonging to the second level group uses the close emission group mode; the average cover area of first level group is larger than the second one; each laminated level is only belong to one level group; when hardware switching between special-frequency laminated regions, the emission group mode character of UE will be set via the group mode of target region.
Description
Technical field
The present invention relates to moving communicating field, particularly the floored community technology.
Background technology
The application of mobile communication in current society is extensive day by day, and the cell frequency soverlay technique in the mobile communication is also constantly progressive thereupon.Use the initial stage in mobile communication system, because telephone traffic is little, often a sub-district covers bigger zone.Increasing along with the user, system is difficult to satisfy growing telephone traffic demand, and the sub-district that tends to increase in some areas a different frequency this moment absorbs telephone traffic.The situation that a plurality of alien-frequency districts cover same area so just appears.
Continuation raising along with telephone traffic, also can carry out further dilatation to system under the actual conditions at the very high hot zones of telephone traffic, the cell splitting of one of them frequency is become a plurality of littler sub-districts, thereby in a zone, set up macrocell and Microcell that the overlay area varies in size, even littler picocell.
Big I according to the sub-district area coverage will be divided into four types for a short time: supermacro sub-district (Mega-cell), macrocell (Macro-cell), Microcell (Micro-cell) and picocell (Pico-cell).Dissimilar sub-districts are applicable to different environment according to business characteristic and mobility.Macrocell is applicable to that generally continuous covering networking, capacity requirement are not high, the environment of high-speed mobile, and its coverage radius of cell is 1-35km; Microcell is applicable to that low speed moves, capacity requirement height, densely populated zone, and coverage radius of cell is 1km to the maximum; Picocell is applicable to that indoor covering and outdoor blind area cover, and coverage radius of cell is less than 50m.The supermacro sub-district generally is applicable to wide covering, and as scarcely populated sea level, grassland etc., the coverage cell radius is greater than 35km, and is maximum even can reach 100Km.Usually, floored community generally is to realize that by macrocell covering continuously, Microcell realization focus cover, thereby forms the multilayer net at whole network, solves network interior " blind spot " and " focus ", raising network capacity and quality.
More than floored community is explained, below the transmit diversity in the wireless network is described.
At third generation partner program (3rd Generation Partnership Project, abbreviation " 3GPP ") Wideband Code Division Multiple Access (WCDMA) (Wideband Code Division Multiple Access, abbreviation " WCDMA ") in the agreement, allow to use transmit diversity techniques with enhancing capacity and covering.Transmit diversity techniques is gone up transmission by same data were divided in different time or space (space-time sheet), the gain that utilizes the irrelevance of signal on time and space to improve channel.Be mainly concerned with four kinds of transmit diversity techniques among the WCDMA, be respectively space-time emission diversity (Space Time Transmit Diversity, abbreviation " STTD "), time switched transmit diversity (Time Switched Transmit Diversity, be called for short " TSTD ") and two kinds of closed loop transmit diversity modes---closed loop transmit diversity modes 1 (Closed Loop TransmitDiversity Mode1, be called for short " CLD1 ") and closed loop transmit diversity modes 2 (Closed Loop TransmitDiversity Mode2 is called for short " CLD2 ").Transmit diversity techniques has utilized the antenna of diverse location in different base station (NodeB) or the same base station to transmit and has arrived user terminal (User Equipment, abbreviation " UE ") irrelevance, Rake diversity reception function by UE, receive the signal that sends by different antennae or different N odeB respectively and carry out the diversity merging again, improve systematic function. wherein, TSTD only is used for synchronizing channel, according to the signal of odd number time slot and even number time slot with different antenna emission .TSTD and two kinds of transmit diversities of STTD needs UE feedback channel quality information not, belong to the open loop diversity emission, its chnnel coding, rate-matched is carried out under non-diversity mode with interweaving. and two kinds of closed loop transmit diversity modes need the feedback information of UE, its chnnel coding, it is identical with non-diversity mode with spread spectrum to interweave. and table 1 has been enumerated the down physical channel that Open-Loop Transmit Diversity and Closed-Loop Transmit Diversity were suitable for.
Table 1
As seen, TSTD only is applicable to the SCH channel from table 1, and is more not obvious to the influence of channel performance, therefore do not use this method usually.
The maximum signal to noise ratio that STTD and two kinds of closed loop transmit diversity modes can be obtained in the Open-Loop Transmit Diversity (Signal to Noise Ratio is called for short " SNR ") is different, and wherein, the maximum S R that adopts STTD to obtain is:
And can follow the tracks of well at the feedback mechanism of Closed-Loop Transmit Diversity under the situation of down channel condition variation, the SNR of the Closed-Loop Transmit Diversity after the demodulation is to the maximum:
As seen, can follow the tracks of well at the feedback mechanism of Closed-Loop Transmit Diversity under the situation of down channel condition variation, its maximum S R is the twice of STTD.
In the prior art, transmit diversity techniques and floored community technology are separate, promptly with transmit diversity techniques or use the floored community technology, being provided with of floored community mainly is to rely on carrier wave, coverage distance, power output, aerial position etc. to embody the difference of floored community, makes all kinds of floored communities obtain the more property gain and underuse transmit diversity.
Summary of the invention
In view of this, main purpose of the present invention is to provide the collocation method of a kind of floored community and diversity mode, makes the floored community of different stage all can obtain the more property gain by transmit diversity.
For achieving the above object, the invention provides a kind of mobile communication system, comprise floored community, the sub-district of the corresponding different big or small area coverages of different hierarchical levels of floored community, the floored community that hierarchical levels belongs to the first rank group uses open loop transmit diversity modes; The floored community that hierarchical levels belongs to the second level group uses closed loop transmit diversity modes; Wherein, the pairing average area coverage of each hierarchical levels is all greater than the pairing average area coverage of each hierarchical levels in the second level group in the first rank group, and each hierarchical levels belongs to and only belongs in a rank group;
User terminal is between described floored community during direct-cut operation, if the cell-of-origin of switching belongs to different rank groups with the affiliated separately hierarchical levels of Target cell, then network side uses the employed diversity mode of Target cell by notifying described user terminal, described user terminal is carried out the configuration of diversity mode attribute.
When user terminal inserted described floored community, network side notified this user terminal to use the diversity mode of this floored community correspondence.
In this external described system, when described user terminal carried out the sub-district gravity treatment or switches, network side was its select target sub-district according to the speed of this user terminal;
The Target cell of selecting is the speed of the user terminal of floored community in the first rank group, is the speed of the user terminal of floored community in the second level group greater than the Target cell of selecting.
In this external described system, described direct-cut operation comprises with frequency direct-cut operation and alien frequencies direct-cut operation.
In this external described system, described user terminal is between with described floored community frequently during soft handover, if the hierarchical levels of the cell-of-origin of optimum subdistrict and soft handover under separately belongs to different rank groups in the soft handover overlapping region, then network side uses the employed diversity mode of described optimum subdistrict by notifying described user terminal, described user terminal is carried out the configuration of diversity mode attribute.
In this external described system, the mode with non-transmit diversity between other floored community in described soft handover overlapping region except that described optimum subdistrict and the described user terminal is connected.
The collocation method of diversity mode when the present invention also provides a kind of user terminal direct-cut operation, the floored community that belongs to the first rank group for hierarchical levels distributes open loop transmit diversity modes, and the floored community that belongs to the second level group for hierarchical levels distributes closed loop transmit diversity modes; Wherein, the pairing average area coverage of each hierarchical levels is all greater than the pairing average area coverage of each hierarchical levels in the second level group in the first rank group, and each hierarchical levels belongs to and only belongs in a rank group;
User terminal is between floored community during direct-cut operation, if the cell-of-origin of switching belongs to different rank groups with the affiliated separately hierarchical levels of Target cell, then network side uses the employed diversity mode of Target cell by notifying described user terminal, described user terminal is carried out the configuration of diversity mode attribute.
The collocation method of diversity mode when the present invention also provides a kind of user terminal soft handover, the floored community that belongs to the first rank group for hierarchical levels distributes open loop transmit diversity modes, and the floored community that belongs to the second level group for hierarchical levels distributes closed loop transmit diversity modes; Wherein, the pairing average area coverage of each hierarchical levels is all greater than the pairing average area coverage of each hierarchical levels in the second level group in the first rank group, and each hierarchical levels belongs to and only belongs in a rank group;
User terminal is between with floored community frequently during soft handover, if the hierarchical levels of the cell-of-origin of optimum subdistrict and soft handover under separately belongs to different rank groups in the soft handover overlapping region, then network side uses the employed diversity mode of described optimum subdistrict by notifying described user terminal, described user terminal is carried out the configuration of diversity mode attribute.
By relatively finding, the main distinction of technical scheme of the present invention and prior art is, the sub-district of the corresponding different big or small area coverages of different hierarchical levels of floored community, each hierarchical levels belongs to and only belongs in a rank group, the floored community that hierarchical levels belongs to the first rank group uses open loop transmit diversity modes, and the floored community that hierarchical levels belongs to the second level group uses closed loop transmit diversity modes; Wherein, the pairing average area coverage of each hierarchical levels is all greater than the pairing average area coverage of each hierarchical levels in the second level group in the first rank group, because on average the translational speed of UE is often very fast in the sub-district that area coverage is bigger, and under the high-speed motion condition, the gain of open loop transmit diversity modes is apparent in view, so the floored community that hierarchical levels belongs to the first rank group uses open loop transmit diversity modes can obtain more gain; Equally, because the translational speed of UE is often slower in the less sub-district of area coverage, and in general closed loop transmit diversity modes can provide than higher gain under the low-speed motion situation, so the floored community that hierarchical levels belongs to the second level group uses closed loop transmit diversity modes can obtain more gain.
When UE carried out the sub-district gravity treatment or switches, network side was its select target sub-district according to the speed of this UE.Belong to the floored community of the first rank group for the UE of higher speed selects the bigger hierarchical levels of area coverage, belong to the floored community of second level group for the UE than low speed selects the less hierarchical levels of area coverage.Make under the unaltered situation of speed, UE can be as far as possible with its cell-of-origin same hierarchical level level cell in switch.
UE is between the alien frequencies floored community during direct-cut operation, if the cell-of-origin of switching is different with the diversity mode that Target cell uses, then UE is carried out the configuration of diversity mode attribute according to the employed diversity mode of Target cell, thereby make the measurement request of also can the normal response network side after the switching to Target cell relevant transmit diversity of this UE, and then normal mutual between assurance and the network side.
During soft handover, the diversity mode that uses according to optimum subdistrict in its soft handover overlapping region carries out the configuration of diversity mode attribute to UE to UE between with floored community frequently.UE after the configuration can receive the diversity signal of optimum subdistrict, guarantees that UE obtains best down-link reception performance.
To use the mode of non-transmit diversity in the soft handover overlapping region with the sub-district that optimum subdistrict disposes different diversity modes, thereby UE can normally be connected also with these sub-districts, avoid producing conflict, normally the carrying out of assurance soft handover because of diversity mode is different.
Description of drawings
Fig. 1 is the distribution schematic diagram according to floored community in the mobile communication system of first embodiment of the invention;
Fig. 2 is the collocation method flow chart according to the diversity mode of the floored community of second embodiment of the invention;
Fig. 3 is the collocation method flow chart of diversity mode during according to the UE direct-cut operation of third embodiment of the invention;
Fig. 4 is the collocation method flow chart of diversity mode during according to the UE soft handover of four embodiment of the invention.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, the present invention is described in further detail below in conjunction with accompanying drawing.
Core of the present invention is, apparent in view according to the gain of open loop transmit diversity modes under the high-speed motion condition, closed loop transmit diversity modes can provide under the low-speed motion situation than these characteristics of higher gain, for the bigger floored community of area coverage distributes open loop transmit diversity modes (translational speed of UE is often very fast in the bigger sub-district of area coverage), for the less floored community of area coverage distributes closed loop transmit diversity modes (translational speed of UE is often slower in the less sub-district of area coverage).Make dissimilar floored communities can use its suitable transmit diversity techniques, the transmit diversity techniques by correspondence obtains the more property gain.
According to inventive principle the first embodiment of the invention mobile communication system is described below.
As shown in Figure 1, the floored community that comprises different hierarchical levels in the present embodiment mobile communication system, the sub-district of the corresponding different big or small area coverages of different hierarchical levels, each hierarchical levels belongs to and only belongs in a rank group, wherein, in the first rank group the pairing average area coverage of each hierarchical levels all greater than the pairing average area coverage of each hierarchical levels in the second level group.The floored community of each hierarchical levels can be overlapped (for the floored community of the different hierarchical levels correspondences of clear embodiment, only described the lap of the different hierarchical levels floored communities of part among Fig. 1), wherein, hierarchical levels 1 corresponding supermacro sub-district, hierarchical levels 2 corresponding macrocells, hierarchical levels 3 corresponding Microcells, hierarchical levels 4 corresponding picocells.Hierarchical levels 1 and hierarchical levels 2 belong to the first rank group, and hierarchical levels 3 and hierarchical levels 4 belong to the second level group.The floored community that hierarchical levels belongs to the first rank group uses open loop transmit diversity modes, promptly uses open loop transmit diversity modes as supermacro sub-district and macrocell; The floored community that hierarchical levels belongs to the second level group uses closed loop transmit diversity modes, promptly uses closed loop transmit diversity modes as Microcell and picocell.Because the translational speed of UE is often very fast in the bigger sub-district of area coverage, and under the high-speed motion condition, the gain of open loop transmit diversity modes is apparent in view, so the bigger sub-district (being the floored community that hierarchical levels belongs to the first rank group) of area coverage uses open loop transmit diversity modes can obtain more gain; Equally, because the translational speed of UE is often slower in the less sub-district of area coverage, and closed loop diversity can provide under the low-speed motion situation than higher gain, therefore closed loop transmit diversity modes should be used in the less sub-district (being the floored community that hierarchical levels belongs to the second level group) of area coverage, thereby obtains more gain.
Each hierarchical levels also can have other attributable system, for example the hierarchical levels 1 of supermacro sub-district correspondence belongs to the first rank group, the hierarchical levels 2 of macrocell correspondence, the hierarchical levels 3 of Microcell correspondence and the hierarchical levels 4 of picocell correspondence belong to the second level group.And for example, when having only three hierarchical levels (rank 1 corresponding macrocell, rank 2 corresponding Microcells, rank 3 corresponding picocells), hierarchical levels 1 belongs to the first rank group, and hierarchical levels 2 and hierarchical levels 3 belong to the second level group.No matter how each hierarchical levels belongs to, all need guarantee, each hierarchical levels belongs to and only belongs in a rank group, and the pairing average area coverage of each hierarchical levels is all greater than the pairing average area coverage of each hierarchical levels in the second level group in the first rank group.
When UE inserted certain floored community, network side was set up this UE of message informing by Radio Resource control (Radio Resource Control is called for short " RRC ") and is used corresponding diversity mode according to the affiliated rank of this floored community.Make that UE can be with diversity mode proper communication in the sub-district of its access of correspondence.
When UE carries out the sub-district gravity treatment or switches, network side is its select target sub-district according to the speed of this UE, if this UE is the UE of higher speed, then select hierarchical levels and belong to the floored community of the first rank group for it, if instead this UE is the UE than low speed, then selects hierarchical levels and belong to the floored community of second level group for it.Make under the unaltered situation of speed, UE can be as far as possible with its cell-of-origin same hierarchical level level cell in switch.
UE is between floored community during direct-cut operation, if the cell-of-origin of switching is different with the diversity mode that Target cell uses, then UE being carried out the configuration of diversity mode attribute according to the employed diversity mode of Target cell. network side can pass through radio bearer (Radio Bearers, be called for short " RB ") reconfiguration message, or transmission channel (Transport Channel, be called for short " Trch ") reconfiguration message, or physical channel (Physical Channel, be called for short " PHY ") reconfiguration message, notice UE uses the employed diversity mode of Target cell, make the measurement request of can the normal response Target cell after the switching to Target cell relevant transmit diversity of this UE, and then normal mutual between assurance and the network side; If the cell-of-origin is identical with the diversity mode that Target cell uses, then need not to revise diversity mode.Such as, at UE during from the picocell direct-cut operation to macrocell, because the hierarchical levels of picocell correspondence belongs to the second level group, what use is Closed-Loop Transmit Diversity, the hierarchical levels of macrocell correspondence belongs to the first rank group, what use is Open-Loop Transmit Diversity, and then network side is configured according to the diversity mode attribute of open loop transmit diversity modes to this UE by the RB/Trch/PHY reconfiguration message.If this UE switches to another picocell from a picocell, or switch to other Microcell, because the hierarchical levels of two kinds of sub-district correspondences all belongs to the second level group, uses identical diversity mode, network side no longer is configured the diversity mode of this UE.
During soft handover, the diversity mode that uses according to optimum subdistrict in its soft handover overlapping region carries out the configuration of diversity mode attribute to UE to UE between with floored community frequently.That is to say, if the cell-of-origin that this UE switches is different with the diversity mode that optimum subdistrict uses, then the diversity mode that uses according to this optimum subdistrict carries out the configuration of diversity mode attribute to UE, Radio Link between this UE and the optimum subdistrict all uses the diversity mode of this optimum subdistrict, make UE can receive the diversity signal of optimum subdistrict, guarantee that UE obtains best down-link reception performance.In the soft handover overlapping region, the mode with non-transmit diversity between other floored community except that optimum subdistrict and this UE is connected, thereby avoids producing because of diversity mode is different conflict, normally the carrying out of assurance soft handover.If the cell-of-origin that this UE switches is identical with the diversity mode that optimum subdistrict uses, then need not to revise the diversity mode of this UE.
Collocation method to the diversity mode of second embodiment of the invention floored community describes below.In the present embodiment, floored community is according to the different corresponding different hierarchical levels of its area coverage size, each hierarchical levels ownership and only belong to a rank group, wherein, in the first rank group the pairing average area coverage of each hierarchical levels all greater than the pairing average area coverage of each hierarchical levels in the second level group.
As shown in Figure 2, in step 210, network side judges according to the hierarchical levels of floored community whether it belongs to the first rank group, if the hierarchical levels of this floored community belongs to the first rank group, then enter step 220, otherwise,, then enter step 230 if the hierarchical levels of this floored community belongs to the second level group.
In step 220, network side is the floored community configuration open loop transmit diversity modes that hierarchical levels belongs to the first rank group, as STTD.Because it is bigger that hierarchical levels belongs to the area coverage of floored community of the first rank group, the translational speed of UE is often very fast in this sub-district, and under the high-speed motion condition, the gain of open loop transmit diversity modes is apparent in view, so the floored community that hierarchical levels belongs to the first rank group uses open loop transmit diversity modes can obtain more gain.
In step 230, network side is the floored community configuration closed loop transmit diversity modes that hierarchical levels belongs to the second level group, as CLD1 or CLD2.Equally, because it is less that hierarchical levels belongs to the floored community area coverage of second level group, the translational speed of UE is often slower in this sub-district, and in general closed loop diversity can provide than higher gain under the low-speed motion situation, thereby so the hierarchical levels floored community that belongs to the second level group should use closed loop transmit diversity modes to obtain more gain.
For example, what suppose hierarchical levels 1 correspondence is the supermacro sub-district, rank 2 corresponding macrocells, rank 3 corresponding Microcells, rank 4 corresponding picocells, hierarchical levels 1 and hierarchical levels 2 belong to the first rank group, hierarchical levels 3 and hierarchical levels 4 belong to the second level group. when the diversity mode configuration of carrying out floored community for Microcell, network side is judged according to the hierarchical levels of Microcell, because the hierarchical levels of Microcell is 3, belong to the second level group, therefore network side distributes CLD1 or CLD2 diversity mode for it. when the diversity mode configuration of carrying out floored community for macrocell, because the hierarchical levels of macrocell is 2, belong to the first rank group, thereby therefore network side distributes the STTD diversity mode for it. make the floored community of different stage all can use suitable diversity mode, obtain maximum gain.
The collocation method of diversity mode describes during below to third embodiment of the invention UE direct-cut operation.
As shown in Figure 3, when UE carries out direct-cut operation (comprise with frequently the situation of direct-cut operation and alien frequencies direct-cut operation) between the floored community, enter step 310, network side judges whether the cell-of-origin that this UE switches is identical with the diversity mode that Target cell uses, if different, then enter step 320; Otherwise process ends then.Such as, at UE during from the picocell direct-cut operation to macrocell, be Closed-Loop Transmit Diversity because picocell uses, what macrocell used is Open-Loop Transmit Diversity, the diversity mode that cell-of-origin of switching and Target cell use is inequality, then enters step 320.If this UE switches to another picocell from a picocell, or switches to Microcell, because identical diversity mode is used in two kinds of sub-districts, then direct process ends.
In step 320, the cell-of-origin of switching is different with the diversity mode that Target cell uses, and network side carries out the configuration of diversity mode attribute by the RB/Trch/PHY reconfiguration message to UE according to the employed diversity mode of Target cell.Make the measurement request of also can the normal response network side after the switching to Target cell relevant transmit diversity of this UE, and then normal mutual between assurance and the network side.
The collocation method of diversity mode describes during below to four embodiment of the invention UE soft handover.
As shown in Figure 4, when UE carries out with the soft handover between the floored community frequently, enter step 410, whether network side is judged the cell-of-origin that this UE switches and switches the diversity mode of the optimum subdistrict use in the overlapping region identical, if different, then enter step 420; Otherwise process ends then.
In step 420, network side carries out the configuration of diversity mode attribute according to the diversity mode that optimum subdistrict in this soft handover overlapping region uses to UE.UE after the configuration can receive the diversity signal of optimum subdistrict, guarantees that UE obtains best down-link reception performance.To use the mode of non-transmit diversity in the soft handover overlapping region with the sub-district that optimum subdistrict disposes different diversity modes, thereby UE can normally be connected also with these sub-districts, avoid producing conflict, normally the carrying out of assurance soft handover because of diversity mode is different.
Though pass through with reference to some of the preferred embodiment of the invention, the present invention is illustrated and describes, but those of ordinary skill in the art should be understood that and can do various changes to it in the form and details, and without departing from the spirit and scope of the present invention.
Claims (8)
1. a mobile communication system comprises floored community, and the sub-district of the corresponding different big or small area coverages of different hierarchical levels of floored community is characterized in that the floored community that hierarchical levels belongs to the first rank group uses open loop transmit diversity modes; The floored community that hierarchical levels belongs to the second level group uses closed loop transmit diversity modes; Wherein, the pairing average area coverage of each hierarchical levels is all greater than the pairing average area coverage of each hierarchical levels in the second level group in the first rank group, and each hierarchical levels belongs to and only belongs in a rank group;
User terminal is between described floored community during direct-cut operation, if the cell-of-origin of switching belongs to different rank groups with the affiliated separately hierarchical levels of Target cell, then network side uses the employed diversity mode of Target cell by notifying described user terminal, described user terminal is carried out the configuration of diversity mode attribute.
2. mobile communication system according to claim 1 is characterized in that, when user terminal inserted described floored community, network side notified this user terminal to use the diversity mode of this floored community correspondence.
3. mobile communication system according to claim 1 is characterized in that, when described user terminal carried out the sub-district gravity treatment or switches, network side was its select target sub-district according to the speed of this user terminal;
The Target cell of selecting is the speed of the user terminal of floored community in the first rank group, is the speed of the user terminal of floored community in the second level group greater than the Target cell of selecting.
4. mobile communication system according to claim 1 is characterized in that, described direct-cut operation comprises with frequency direct-cut operation and alien frequencies direct-cut operation.
5. mobile communication system according to claim 1, it is characterized in that, described user terminal is between with described floored community frequently during soft handover, if the hierarchical levels of the cell-of-origin of optimum subdistrict and soft handover under separately belongs to different rank groups in the soft handover overlapping region, then network side uses the employed diversity mode of described optimum subdistrict by notifying described user terminal, described user terminal is carried out the configuration of diversity mode attribute.
6. mobile communication system according to claim 5 is characterized in that, the mode with non-transmit diversity between other floored community in described soft handover overlapping region except that described optimum subdistrict and the described user terminal is connected.
7. the collocation method of diversity mode during a user terminal direct-cut operation, it is characterized in that, the floored community that belongs to the first rank group for hierarchical levels distributes open loop transmit diversity modes, and the floored community that belongs to the second level group for hierarchical levels distributes closed loop transmit diversity modes; Wherein, the pairing average area coverage of each hierarchical levels is all greater than the pairing average area coverage of each hierarchical levels in the second level group in the first rank group, and each hierarchical levels belongs to and only belongs in a rank group;
User terminal is between floored community during direct-cut operation, if the cell-of-origin of switching belongs to different rank groups with the affiliated separately hierarchical levels of Target cell, then network side uses the employed diversity mode of Target cell by notifying described user terminal, described user terminal is carried out the configuration of diversity mode attribute.
8. the collocation method of diversity mode during a user terminal soft handover, it is characterized in that, the floored community that belongs to the first rank group for hierarchical levels distributes open loop transmit diversity modes, and the floored community that belongs to the second level group for hierarchical levels distributes closed loop transmit diversity modes; Wherein, the pairing average area coverage of each hierarchical levels is all greater than the pairing average area coverage of each hierarchical levels in the second level group in the first rank group, and each hierarchical levels belongs to and only belongs in a rank group;
User terminal is between with floored community frequently during soft handover, if the hierarchical levels of the cell-of-origin of optimum subdistrict and soft handover under separately belongs to different rank groups in the soft handover overlapping region, then network side uses the employed diversity mode of described optimum subdistrict by notifying described user terminal, described user terminal is carried out the configuration of diversity mode attribute.
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| CN101389126B (en) * | 2007-09-13 | 2012-01-11 | 中兴通讯股份有限公司 | Multi-antenna mode selection method in process of cell switching |
| CN101414861B (en) * | 2007-10-15 | 2013-06-12 | 中兴通讯股份有限公司 | Radio communication system and method combining interlayer and inner-layer diversity transmission |
| CN102217343A (en) | 2011-04-29 | 2011-10-12 | 华为技术有限公司 | Transmission method, apparatus and system for uplink transmission diversity |
| WO2013107421A1 (en) | 2012-01-21 | 2013-07-25 | 华为技术有限公司 | Uplink transmit diversity transmission method, device and system |
| CN106304172A (en) * | 2015-05-18 | 2017-01-04 | 中国移动通信集团公司 | A kind of method and apparatus determining moving velocity of terminal |
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| GB2414365A (en) * | 2004-05-19 | 2005-11-23 | Motorola Inc | Selecting a downlink transmit diversity technique (DTDT) on basis of link characteristic |
| CN1729633A (en) * | 2002-10-28 | 2006-02-01 | 高通股份有限公司 | Utilizing speed and position information to select an operational mode in a wireless communication system |
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| CN1212110A (en) * | 1996-02-20 | 1999-03-24 | 诺基亚电信公司 | Method and arrangement for making handover decision in mobile communication system |
| CN1729633A (en) * | 2002-10-28 | 2006-02-01 | 高通股份有限公司 | Utilizing speed and position information to select an operational mode in a wireless communication system |
| GB2414365A (en) * | 2004-05-19 | 2005-11-23 | Motorola Inc | Selecting a downlink transmit diversity technique (DTDT) on basis of link characteristic |
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