CN106341167A - Method and device for performing cell splitting in eNB sector - Google Patents

Method and device for performing cell splitting in eNB sector Download PDF

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Publication number
CN106341167A
CN106341167A CN201510416164.7A CN201510416164A CN106341167A CN 106341167 A CN106341167 A CN 106341167A CN 201510416164 A CN201510416164 A CN 201510416164A CN 106341167 A CN106341167 A CN 106341167A
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CN
China
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sector
sub
antennas
antenna
enb
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CN201510416164.7A
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Chinese (zh)
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CN106341167B (en
Inventor
何大中
李品
徐颂华
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上海贝尔股份有限公司
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Publication of CN106341167A publication Critical patent/CN106341167A/en
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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B7/00Radio transmission systems, i.e. using radiation field
    • H04B7/02Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0413MIMO systems
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/0001Arrangements for dividing the transmission path
    • H04L5/0003Two-dimensional division
    • H04L5/0005Time-frequency

Abstract

The invention aims to provide a method and a device for performing cell splitting in an eNB sector. The method comprises the step that antennas corresponding to the eNB sector are grouped according to a preset rule, so as to obtain a plurality of antenna groups, wherein each antenna group corresponds to one sub-sector. Compared with the prior art, the eNB sector is split into a plurality of sub-sectors. Further, when the eNB sector corresponds to 8 antennas, a 4 antenna 2*4T4R separation mode supporting 8 antennas in one eNB sector in LTE or LTE-A is provided by the invention. Moreover, the method and the device for performing cell splitting in the eNB sector can support a double carrier number and can support carrier aggregation.

Description

Carry out the method and apparatus of cell splitting in a kind of sector in enb

Technical field

The present invention relates to communication technical field, more particularly, to a kind of for lte (Long Term Evolution, Long term evolution) or lte-a (enhanced Long Term Evolution, long term Evolution advanced) in carry out multi-antenna cell division and the skill of sector intercarrier polymerization Art..

Background technology

In prior art, some telecom operators deploy a kind of typical combination polarization (combination polarization, cp) scheme, the program does not broadcast weight power attenuation. This combination polarization scheme is based on 45 ° of traditional cross polarised antenna arrays.As shown in Figure 1 Typically two-way 45 ° of cross polarised antenna arrays.

For the scheme of above-mentioned existing 8t8r (the 8 transmitting 8 reception) pattern with 8 antennas, General thought is that the channel of height correlation leads to preferably wave beam forming (if asd is relatively low), and Mimo (multi-input multi-out, multiple-input and multiple-output) wishes to low correlation to obtain To multiple streams, i.e. similar eigenvalue.Identical slash " " mean the high related of wave beam forming Property.Different slash " and/" means the low correlation of mimo, and for example, " " represents Mimo branch 1, " // // " represent mimo branch 2.Preferably solution incites somebody to action " correlation " The antenna element composition port set of " incoherent ".

In an example of the program, two neighbouring clusters are mapped to a port, respectively Port 0 and port 1, this two ports are respectively provided with fixing weight.Basic thought is by making With the combination of different physical antennas, form the antenna of two groups of imaginary intersection polarization.

By distributing weighted value, in Fig. 1, the cluster on the left side can be equal to a virtual vertical polarization Antenna, the cluster on the right can be considered a dummy level poliarizing antenna.Assume this two clusters in sky Between in close, it can be combined as 45 ° of intersecting vertical antennas.

Content of the invention

It is an object of the invention to provide one kind is in enb, and (enodeb, node b) are carried out in sector The method and apparatus of cell splitting.

According to an aspect of the invention, it is provided one kind carries out cell splitting in enb sector Method, wherein, the method includes:

- according to presetting rule, the antenna corresponding to described enb sector is grouped, to obtain Obtain multiple antenna sets, wherein, each antenna sets corresponds to a sub- sector.

Preferably, described enb sector be to there being eight antennas, wherein, every two cross-pole Change antenna and form a cluster of antennas, wherein, the mode of packet includes:

- using two spaced cluster of antennas as one group of antenna sets, by described enb sector It is split into two sub- sectors, wherein, every sub- sector corresponds to four antennas.

Preferably, double carrier number can be supported in described enb sector.

Preferably, described two sub- sectors institutes corresponding two or more carrier wave can be carried out respectively Carrier aggregation.

Preferably, between described antenna, there is predetermined antenna spacing.

Preferably, the method also includes:

- proceed to be grouped by described antenna sets, described enb sector is split into four sons Sector, wherein, every sub- sector corresponds to two antennas.

According to a further aspect in the invention, additionally provide one kind and carry out cell in enb sector The device of division, wherein, this device includes:

First apparatus for grouping, for according to presetting rule, by corresponding to described enb sector Antenna is grouped, to obtain multiple antenna sets, wherein, the corresponding son fan of each antenna sets Area.

Preferably, described enb sector be to there being eight antennas, wherein, every two cross-pole Change antenna and form a cluster of antennas, wherein, the mode of packet includes:

- using two spaced cluster of antennas as one group of antenna sets, by described enb sector It is split into two sub- sectors, wherein, every sub- sector corresponds to four antennas.

Preferably, double carrier number can be supported in described enb sector.

Preferably, described two sub- sectors institutes corresponding two or more carrier wave can be carried out respectively Carrier aggregation.

Preferably, between described antenna, there is predetermined antenna spacing.

Preferably, this device also includes:

Second packet device, for proceeding to be grouped by described antenna sets, by described enb Sector is split into four sub- sectors, and wherein, every sub- sector corresponds to two antennas.

Compared with prior art, the present invention, according to presetting rule, enb sector is split into many Individual sub- sector.Further, when corresponding eight antennas in enb sector, the present invention provides one Plant the 4 antenna 2 × 4t4r supporting 8 antennas in an enb sector of lte or lte-a Clastotype.The present invention supports that under same band 4 physical antenna port mapping are up to 4 ends Mouth dl (downlink, downlink) transmission.Further, the present invention can support double Carrier number.The present invention can support carrier aggregation.Further, the present invention also can will be grouped To antenna sets proceed be grouped, described enb sector is split into four sub- sectors, Wherein, every sub- sector corresponds to two antennas.

4 antenna 2 × 4t4r clastotypes of 8 antennas need to obtain each rru (remote Radio unit, Remote Radio Unit) license.Identical parameter also will be used in 2t2r Configuration, under this configuration each enb support 4 carrier waves.

Time calibration error as described in 3gpp ts 36.104, between different transmission path 65ns should be held below.According to simulation result, the performance phase of 4 × 2dl single user mimo There may be some loss (acceptable) compared with 8 × 2dl, however, compared to 8 × 2dl, 4 × 2dl single user mimo will bring bigger gain.4 × 2dl the single user being configured Mimo, typical performance standard can be peak throughput, average ceU throughput and cell Border handling capacity will relatively.

The present invention is it is also possible that Intra-cell affixes one's name to less antenna to save terrace size.

Brief description

By reading the detailed description that non-limiting example is made made with reference to the following drawings, The other features, objects and advantages of the present invention will become more apparent upon:

Fig. 1 illustrates a kind of antenna combination polarization scheme according to prior art;

Fig. 2 illustrates to carry out cell splitting in the sector in enb according to an embodiment of the invention Schematic diagram;

Fig. 3 illustrates to carry out cell splitting in the sector in enb in accordance with another embodiment of the present invention Schematic diagram;

Fig. 4 illustrates to carry out cell splitting in enb sector according to another embodiment of the present invention Schematic diagram.

In accompanying drawing, same or analogous reference represents same or analogous part.

Specific embodiment

Below in conjunction with the accompanying drawings the present invention is described in further detail.

Term " base station " used herein above can be considered synonymous with the following and later In sometimes can be referred to as the following: b node, evolved b node, enodeb, enb, Base transceiver stations (bts), rnc, vran etc., and can be described in can cross over many Communicate with mobile terminal in the cordless communication network of individual technology generation and provided Radio Resource Transceiver.In addition to implementing the ability of method discussed herein, base station discussed herein Can have the institute being associated with traditional well-known base station functional.

Method discussed hereafter can by hardware, software, firmware, middleware, microcode, Hardware description language or its combination in any are implementing.When with software, firmware, middleware or micro- When code is to implement, program code or code segment in order to implement necessary task can be stored in In machine or computer-readable medium (such as storage medium).(one or more) processor can To implement necessary task.

Concrete structure disclosed herein and function detail are only representational, and be for The purpose of the exemplary embodiment of the description present invention.But the present invention can replace shape by many Formula is implementing, and is not interpreted as being limited only by the embodiments set forth herein.

Although it should be appreciated that may have been used term " first ", " second " etc. here To describe unit, but these units should not be limited by these terms.Using these arts Language is used for the purpose of making a distinction a unit and another unit.For example, do not carrying on the back In the case of the scope of exemplary embodiment, first module can be referred to as second unit, and And similarly second unit can be referred to as first module.Term "and/or" bag used herein above Include any and all combination of one of or more listed associated item.

It should be appreciated that when a unit is referred to as " connection " or during " coupled " to another unit, It can be connected or coupled to described another unit, or there may be temporary location.With This relatively, be referred to as when a unit " when being directly connected " or " directly coupled " to another unit, Then there is not temporary location.Should explain in a comparable manner and be used for describing between unit Relation other words (for example " between being in ... " compared to " between being directly in ... ", " with ... Neighbouring " compared to " with ... it is directly adjacent to " etc.).

Term used herein above is used for the purpose of description specific embodiment and is not intended to limit example Property embodiment.Unless the context clearly dictates otherwise, otherwise singulative used herein above " one ", " one " also attempt to including plural number.It is to be further understood that art used herein above Language " inclusion " and/or "comprising" specify stated feature, integer, step, operation, unit and/ Or the presence of assembly, and do not preclude the presence or addition of other features one or more, integer, step Suddenly, operation, unit, assembly and/or a combination thereof.

It should further be mentioned that in some replaces realization modes, the function/action being previously mentioned can To occur according to different from the order indicating in accompanying drawing.For example, depending on involved work( Energy/action, the two width figures in succession illustrating can essentially substantially simultaneously execute or sometimes permissible To execute in a reverse order.

Unless otherwise defined, otherwise all terms used herein (including technology and scientific terminology) All be there is the identical being generally understood with the technical staff in exemplary embodiment art contain Justice.It is to be further understood that unless be explicitly defined here, being otherwise for example usually used Dictionary defined in those terms should be construed as that there is context in association area with it In the consistent implication of implication, and should not come according to Utopian or excessively formal meaning Explain.

According to an aspect of the invention, it is provided one kind carries out cell splitting in enb sector Method, wherein, the method includes:

- according to presetting rule, the antenna corresponding to described enb sector is grouped, to obtain Obtain multiple antenna sets, wherein, each antenna sets corresponds to a sub- sector.

Specifically, enb sector may correspond to many antennas, for example, in lte or lte-a In, certain enb sector corresponds to 8 antennas, according to presetting rule, this enb can be fanned The corresponding antenna in area is grouped, and for example, is divided into two or four antenna sets, each antenna sets A corresponding sub- sector, thus, this enb sector is split into many sub- sectors.

Here, presetting rule can be system intialization, for example, preset by this enb sector Two antenna sets are divided into the antenna of drink, or further, preset by two spaced skies As one group of antenna sets, wherein, each cluster of antennas has two cross polarised antennas to line cluster.Should Presetting rule can also be adjusted according to practical situation.

Preferably, described enb sector be to there being eight antennas, wherein, every two cross-pole Change antenna and form a cluster of antennas, wherein, the mode of packet includes:

- using two spaced cluster of antennas as one group of antenna sets, by described enb sector It is split into two sub- sectors, wherein, every sub- sector corresponds to four antennas.

Specifically, this enb sector be to there being eight antennas, wherein, every two cross polarizations Antenna forms a cluster of antennas, then can be using two spaced cluster of antennas as one group of antenna Group, i.e., as one group of antenna sets, second, four cluster of antennas are as one group for first and third cluster of antennas Antenna sets, so, this enb sector is split into two sub- sectors, and every sub- sector corresponds to Four antennas.

Preferably, between described antenna, there is predetermined antenna spacing.

Specifically, can have predetermined antenna spacing between this antenna corresponding to enb sector, For example, there is between the adjacent antenna of two cluster of antennas the predetermined antenna spacing of λ/2.This value Can be for example that system is predetermined, or, it is adjusted according to practical situation.

Fig. 2 illustrates to carry out cell splitting in the sector in enb according to an embodiment of the invention Schematic diagram.

Eight antennas of this in figure are corresponding eight antennas in enb sector, wherein, every two Cross polarised antenna forms a cluster of antennas, then two spaced cluster of antennas are as one group of sky Line group, i.e. the antenna 1,5,3,7 of in figure as one group of antenna sets, antenna 2,6,4, 8 as one group of antenna sets, and so, this eight antennas are divided into two antenna sets, and this enb fans Qu Ze is split into two sub- sectors, and every sub- sector (antenna sets) corresponds to four antennas.

Preferably, double carrier number can be supported in described enb sector.

Specifically, because enb sector has been split into two sub- sectors, every sub- sector is still The carrier wave with the equal number of this original support in enb sector can be supported, then this enb sector Double carrier number can be supported.

Preferably, described two sub- sectors institutes corresponding two or more carrier wave can be carried out respectively Carrier aggregation (ca, carrier aggregation).

Specifically, enb sector has been split into two sub- sectors, and it is right that every individual sub- sector all has The carrier wave answered, for example, this two sub- sectors are spatially symmetrical, and every sub- sector is all right Should there are two carrier waves, as corresponding in sub- sector 1 carrier wave c1, c2, sub- sector 2 correspondence carrier wave c4, C5, then this two sub- sectors institutes corresponding two carrier waves can carry out carrier aggregation, such as respectively C1 and c4 carries out carrier aggregation, c2 and c5 carries out carrier aggregation.For example, cpri (common Public radio interface, common public radio interface) interface can map to right respectively Should two sub- sectors carrier wave.

Fig. 3 illustrates to carry out cell splitting in the sector in enb in accordance with another embodiment of the present invention Schematic diagram.

Fig. 3 shows a typical case of tdd (time division duplex, time division duplex) Example, it supports " 4 antenna clastotype 2 × 4t4r configuration (1 sector rrh) ".For Support this configuration, bbu (baseband unit, Base Band Unit) should support to carry a width of 20mhz 4 × 2dl mimo, and the 4rx ul diversity with a width of 20mhz is (on 4 tunnels Row receives diversity).This configuration can be reconfigured into support " 8 antenna 8t8r as shown in Figure 3 Configuration ".

As shown in figure 3, the left figure in Fig. 3 shows that this enb sector is split into two sons The situation of sector, the right figure in Fig. 3 shows a case that this enb sector is not split off.

In the left figure of Fig. 3, eight antennas are divided into two groups, and 1,5,3,7 is an antenna Group, 2,6,4,8 is antenna sets, and each antenna sets corresponds to an enb sector, This two sub- sectors are spatially symmetrical.Compared to enb sector in right figure not by The situation of division, the rrh (remote radio head, remote radio head) in left figure Including two four-way channel filters.

Here, the cpri of rrh is connected to bbu (baseband unit, Base Band Unit).

This rrh has two cpri interface l1 and l2.In right figure enb sector not by In the case of division, l1 maps a carrier wave c1, and l2 maps a carrier wave c2.And on a left side In the case that in figure enb sector is split into two sub- sectors, l1 can support two carrier waves C1 and c2, l2 can support two carrier wave c4 and c5.Therefore, divided in enb sector In the case of splitting for two sub- sectors, the number of carrier wave that this enb sector is supported is double.This Outward, in left figure, l1 can also map to respectively correspond to two sub- sectors carrier wave c1 and C4, l2 can also map to carrier wave c2 and c5 corresponding to two sub- sectors respectively.This enb Therefore support carrier aggregation.Here, the bandwidth of each carrier wave is, for example, 20mhz.

Here is although some configurations can be reconfigured, i.e. do not have the change on hardware, So, the pattern of this cell splitting can be converted into another kind of configuration, for example, in cell splitting Changed between pattern and non-schizotype.However, each cpri interface being connected is not Obtaining is not bbu hardware supported speed 7.In view of different configuration of support, a corresponding bbu The interior sub- sector of 4 antennas, the typical case connecting with regard to cpri interface is mapped in this enb sector weight Also should reconfigure when putting.

Fig. 4 illustrates to carry out cell splitting in enb sector according to another embodiment of the present invention Schematic diagram.

With Fig. 3 analogously, the left figure of Fig. 4 shows that this enb sector is split into two The situation of sub- sector, the right figure of Fig. 4 shows a case that this enb sector is not split off, its It is with the difference of Fig. 3, the rrh of Fig. 4 has three cpri interface l1, l2 And l3.

In the case that in right figure, enb sector is not split off, l1 maps a carrier wave c1, l2 One carrier wave c2 of mapping, l3 map a carrier wave c3.And enb sector is divided in left figure In the case of splitting for two sub- sectors, l1 can support two carrier wave c1 and c2, and l2 is permissible Support that two carrier wave c4 and c5, l3 can support three carrier wave c3 and c6.Therefore, exist In the case that enb sector is split into two sub- sectors, the carrier number that this enb sector is supported Amount is double.Additionally, in left figure, l1 can also map to and correspond to two sub- sectors respectively Carrier wave c1 and c4, l2 can also map to respectively correspond to two sub- sectors carrier wave c2 and C5, l3 can also map to carrier wave c3 and c6 corresponding to two sub- sectors respectively.This enb Therefore support carrier aggregation.Here, the bandwidth of each carrier wave is, for example, 20mhz.

Here, regardless of the configuration of software and hardware, the carrier wave that cpri interface is mapped is total Quantity not can exceed that the ability of bbu (control unit and modem).This is enb system The bottleneck of system framework.This is no longer going to repeat them for more examples deriving, itself and aforementioned exemplary There is similar principle, will be incorporated herein by way of reference.

Preferably, the method also includes:

- proceed to be grouped by described antenna sets, described enb sector is split into four sons Sector, wherein, every sub- sector corresponds to two antennas.

Specifically, after corresponding for this enb sector eight antennas are divided into two antenna sets, Can also continue to this two antenna sets are grouped, because each antenna sets is to should have four skies Line, therefore, it can continue to be divided into two sub- antenna sets by this four antennas, for example, directly will As sub- antenna sets, each sub-antenna group corresponds to two cross polarization skies to one cluster of antennas Line.So, this eight antennas are divided into four sub- antenna sets, accordingly, this enb sector It is split into four sub- sectors, every sub- sector corresponds to two antennas.

It is preferred that after this enb sector is split into four sub- sectors, this enb sector Four times of carrier numbers for example can be supported.Similarly, this four sub- sectors are distinguished corresponding two Or multiple subcarrier can carry out carrier aggregation.

It is preferred that also can directly this eight antennas being divided into four antenna sets at the very start, with This enb sector is split into four sub- sectors, wherein, every sub- sector corresponds to two antennas.

According to a further aspect in the invention, additionally provide one kind and carry out cell in enb sector The device 1 of division.This device 1 includes the first apparatus for grouping.

This first apparatus for grouping is used for according to presetting rule, by corresponding to described enb sector Antenna is grouped, to obtain multiple antenna sets, wherein, the corresponding son fan of each antenna sets Area.

Specifically, enb sector may correspond to many antennas, for example, in lte or lte-a In, certain enb sector correspond to 8 antennas, the first apparatus for grouping can according to presetting rule, This corresponding antenna in enb sector is grouped, for example, is divided into two or four antenna sets, Each antenna sets corresponds to a sub- sector, and thus, this enb sector is split into many height fans Area.

Here, presetting rule can be system intialization, for example, preset by this enb sector Two antenna sets are divided into the antenna of drink, or further, preset by two spaced skies As one group of antenna sets, wherein, each cluster of antennas has two cross polarised antennas to line cluster.Should Presetting rule can also be adjusted according to practical situation.

Preferably, described enb sector be to there being eight antennas, wherein, every two cross-pole Change antenna and form a cluster of antennas, wherein, the mode of packet includes:

- using two spaced cluster of antennas as one group of antenna sets, by described enb sector It is split into two sub- sectors, wherein, every sub- sector corresponds to four antennas.

Specifically, this enb sector be to there being eight antennas, wherein, every two cross polarizations Antenna forms a cluster of antennas, then the first apparatus for grouping can be by two spaced cluster of antennas As one group of antenna sets, i.e. first and third cluster of antennas as one group of antenna sets, second, four days As one group of antenna sets, so, this enb sector is split into two sub- sectors to line cluster, often Individual sub- sector corresponds to four antennas.

Preferably, between described antenna, there is predetermined antenna spacing.

Specifically, can have predetermined antenna spacing between this antenna corresponding to enb sector, For example, there is between the adjacent antenna of two cluster of antennas the predetermined antenna spacing of λ/2.This value Can be for example that system is predetermined, or, it is adjusted according to practical situation.

For example, as shown in Fig. 2 the eight of this in figure antennas are corresponding eight of enb sector Antenna, wherein, every two cross polarised antennas form a cluster of antennas, then the first apparatus for grouping Using two spaced cluster of antennas as one group of antenna sets, i.e. the antenna of in figure 1,5,3, 7 as one group of antenna sets, and antenna 2,6,4,8 is as one group of antenna sets, so, this eight Antenna is divided into two antenna sets, and this enb sector is then split into two sub- sectors, each Sub- sector (antenna sets) corresponds to four antennas.

Preferably, double carrier number can be supported in described enb sector.

Specifically, because enb sector has been split into two sub- sectors, every sub- sector is still The carrier wave with the equal number of this original support in enb sector can be supported, then this enb sector Double carrier number can be supported.

Preferably, described two sub- sectors institutes corresponding two or more carrier wave can be carried out respectively Carrier aggregation (carrier aggregation).

Specifically, enb sector has been split into two sub- sectors, and it is right that every individual sub- sector all has The carrier wave answered, for example, this two sub- sectors are spatially symmetrical, and every sub- sector is all right Should there are two carrier waves, as corresponding in sub- sector 1 carrier wave c1, c2, sub- sector 2 correspondence carrier wave c4, C5, then this two sub- sectors institutes corresponding two carrier waves can carry out carrier aggregation, such as respectively C1 and c4 carries out carrier aggregation, c2 and c5 carries out carrier aggregation.For example, cpri (common Public radio interface, common public radio interface) interface can map to right respectively Should two sub- sectors carrier wave.

Fig. 3 shows a typical case of tdd (time division duplex, time division duplex) Example, it supports " 4 antenna clastotype 2 × 4t4r configuration (1 sector rrh) ".For Support this configuration, bbu should support the 4 × 2dl mimo (4 × 2 with a width of 20mhz Downlink multiple-input and multiple-output), and the 4rx ul diversity (4 with a width of 20mhz Road uplink receiving diversity).This configuration can be reconfigured into support " 8 antennas as shown in Figure 3 8t8r configures ".

As shown in figure 3, the left figure in Fig. 3 shows that this enb sector is split into two sons The situation of sector, the right figure in Fig. 3 shows a case that this enb sector is not split off.

In the left figure of Fig. 3, eight antennas are divided into two groups, and 1,5,3,7 is an antenna Group, 2,6,4,8 is antenna sets, and each antenna sets corresponds to an enb sector, This two sub- sectors are spatially symmetrical.Compared to enb sector in right figure not by The situation of division, the rrh (remote radio head, remote radio head) in left figure Including two four-way channel filters.

Here, the cpri of rrh is connected to bbu (baseband unit, Base Band Unit).

This rrh has two cpri interface l1 and l2.In right figure enb sector not by In the case of division, l1 maps a carrier wave c1, and l2 maps a carrier wave c2.And on a left side In the case that in figure enb sector is split into two sub- sectors, l1 can support two carrier waves C1 and c2, l2 can support two carrier wave c4 and c5.Therefore, divided in enb sector In the case of splitting for two sub- sectors, the number of carrier wave that this enb sector is supported is double.This Outward, in left figure, l1 can also map to respectively correspond to two sub- sectors carrier wave c1 and C4, l2 can also map to carrier wave c2 and c5 corresponding to two sub- sectors respectively.This enb Therefore support carrier aggregation.Here, the bandwidth of each carrier wave is, for example, 20mhz.

Here is although some configurations can be reconfigured, i.e. do not have the change on hardware, So, the pattern of this cell splitting can be converted into another kind of configuration, for example, in cell splitting Changed between pattern and non-schizotype.However, each cpri interface being connected is not Obtaining is not bbu hardware supported speed 7.In view of different configuration of support, a corresponding bbu The interior sub- sector of 4 antennas, the typical case connecting with regard to cpri interface is mapped in this enb sector weight Also should reconfigure when putting.

With Fig. 3 analogously, the left figure of Fig. 4 shows that this enb sector is split into two The situation of sub- sector, the right figure of Fig. 4 shows a case that this enb sector is not split off, its It is with the difference of Fig. 3, the rrh of Fig. 4 has three cpri interface l1, l2 And l3.

In the case that in right figure, enb sector is not split off, l1 maps a carrier wave c1, l2 One carrier wave c2 of mapping, l3 map a carrier wave c3.And enb sector is divided in left figure In the case of splitting for two sub- sectors, l1 can support two carrier wave c1 and c2, and l2 is permissible Support that two carrier wave c4 and c5, l3 can support three carrier wave c3 and c6.Therefore, exist In the case that enb sector is split into two sub- sectors, the carrier number that this enb sector is supported Amount is double.Additionally, in left figure, l1 can also map to and correspond to two sub- sectors respectively Carrier wave c1 and c4, l2 can also map to respectively correspond to two sub- sectors carrier wave c2 and C5, l3 can also map to carrier wave c3 and c6 corresponding to two sub- sectors respectively.This enb Therefore support carrier aggregation.Here, the bandwidth of each carrier wave is, for example, 20mhz.

Here, regardless of the configuration of software and hardware, the carrier wave that cpri interface is mapped is total Quantity not can exceed that the ability of bbu (control unit and modem).This is enb system The bottleneck of system framework.This is no longer going to repeat them for more examples deriving, itself and aforementioned exemplary There is similar principle, will be incorporated herein by way of reference.

Preferably, this device 1 also includes second packet device.

Described antenna sets are proceeded to be grouped by second packet device, by described enb sector It is split into four sub- sectors, wherein, every sub- sector corresponds to two antennas.

Specifically, in the first apparatus for grouping, corresponding for this enb sector eight antennas are divided into two After individual antenna sets, second packet device can also continue to this two antenna sets are grouped, Because each antenna sets is to there being four antennas, therefore, second packet device can be by this four Antenna continues to be divided into two sub- antenna sets, for example, directly using a cluster of antennas as a sub- sky Line group, each sub-antenna group corresponds to two cross polarised antennas.So, this eight antennas are divided For four sub- antenna sets, accordingly, this enb sector is split into four sub- sectors, each Sub- sector corresponds to two antennas.

It is preferred that after this enb sector is split into four sub- sectors, this enb sector Four times of carrier numbers for example can be supported.Similarly, this four sub- sectors are distinguished corresponding two Or multiple subcarrier can carry out carrier aggregation.

It is preferred that this eight antennas also directly can be divided into four by second packet device at the very start Individual antenna sets, this enb sector is split into four sub- sectors, wherein, every sub- sector Corresponding two antennas.

Compared with prior art, the present invention, according to presetting rule, enb sector is split into many Individual sub- sector.Further, when corresponding eight antennas in enb sector, the present invention provides one Plant the 4 antenna 2 × 4t4r supporting 8 antennas in an enb sector of lte or lte-a Clastotype.The present invention supports that under same band 4 physical antenna port mapping are up to 4 ends Mouth dl transmission.Further, the present invention can support double carrier number.The present invention can support to carry Ripple is polymerized.Further, the antenna sets that packet also can be obtained by the present invention proceed to be grouped, So that described enb sector is split into four sub- sectors, wherein, every sub- sector corresponds to two Antenna.

4 antenna 2 × 4t4r clastotypes of 8 antennas need to obtain the license of each rru. Identical parameter also will be used in the configuration of 2t2r, and under this configuration, each enb supports 4 Carrier wave.

Time calibration error as described in 3gpp ts 36.104, between different transmission path 65ns should be held below.According to simulation result, the performance phase of 4 × 2dl single user mimo There may be some loss (acceptable) compared with 8 × 2dl, however, compared to 8 × 2dl, 4 × 2dl single user mimo will bring bigger gain.4 × 2dl the single user being configured Mimo, typical performance standard can be peak throughput, average ceU throughput and cell Border handling capacity will relatively.

The present invention is it is also possible that Intra-cell affixes one's name to less antenna to save site area size.

It should be noted that the present invention can be by reality in the software and/or software assembly with hardware Apply, for example, can using special IC (asic), general purpose computer or any its He is similar to hardware device to realize.In one embodiment, the software program of the present invention can lead to Cross computing device to realize steps described above or function.Similarly, the software journey of the present invention Sequence (including related data structure) can be stored in computer readable recording medium storing program for performing, example As, ram memorizer, magnetically or optically driver or floppy disc and similar devices.In addition, this Some bright steps or function can employ hardware to realize, for example, as with processor cooperation from And execute the circuit of each step or function.

In addition, the part of the present invention can be applied to computer program, such as computer Programmed instruction, when it is computer-executed, by the operation of this computer, can call or The method according to the invention and/or technical scheme are provided.And call the program of the method for the present invention Instruction, is possibly stored in fixing or moveable recording medium, and/or by broadcast Or the data flow in other signal bearing medias and be transmitted, and/or be stored according to described In the working storage of computer equipment that programmed instruction runs.Here, according to the present invention one Individual embodiment includes a device, and this device includes the storage for storing computer program instructions Device and the processor for execute program instructions, wherein, at this computer program instructions is by this During reason device execution, trigger the side based on aforementioned multiple embodiments according to the present invention for this plant running Method and/or technical scheme.

It is obvious to a person skilled in the art that the invention is not restricted to above-mentioned one exemplary embodiment Details, and without departing from the spirit or essential characteristics of the present invention, can be with it His concrete form realizes the present invention.Therefore, no matter from the point of view of which point, all should be by embodiment Regard exemplary as, and be nonrestrictive, the scope of the present invention is by claims Rather than described above limit, it is intended that by fall claim equivalency implication and In the range of all changes be included in the present invention.Should not be by any accompanying drawing mark in claim Note is considered as limiting involved claim.Furthermore, it is to be understood that " inclusion " one word is not excluded for other lists Unit or step, odd number is not excluded for plural number.Multiple units of statement or device in device claim Can also be realized by software or hardware by a unit or device.The first, the second grade word Pragmatic is representing title, and is not offered as any specific order.

Claims (12)

1. a kind of method carrying out cell splitting in sector in enb, wherein, the method includes:
- according to presetting rule, the antenna corresponding to described enb sector is grouped, to obtain Obtain multiple antenna sets, wherein, each antenna sets corresponds to a sub- sector.
2. method according to claim 1, wherein, described enb sector is to should have eight Root antenna, wherein, every two cross polarised antennas form a cluster of antennas, wherein, packet Mode includes:
- using two spaced cluster of antennas as one group of antenna sets, by described enb sector It is split into two sub- sectors, wherein, every sub- sector corresponds to four antennas.
3. method according to claim 2, wherein, described enb sector can be supported double Times carrier number.
4. method according to claim 2, wherein, described two sub- sectors are distinguished Corresponding two or more carrier wave can carry out carrier aggregation.
5. the method according to any one of claim 2 to 4, wherein, described antenna Between there is predetermined antenna spacing.
6. method according to claim 2, wherein, the method also includes:
- proceed to be grouped by described antenna sets, described enb sector is split into four sons Sector, wherein, every sub- sector corresponds to two antennas.
7. carry out the device of cell splitting in a kind of sector in enb, wherein, this device includes:
First apparatus for grouping, for according to presetting rule, by corresponding to described enb sector Antenna is grouped, to obtain multiple antenna sets, wherein, the corresponding son fan of each antenna sets Area.
8. device according to claim 7, wherein, described enb sector is to should have eight Root antenna, wherein, every two cross polarised antennas form a cluster of antennas, wherein, packet Mode includes:
- using two spaced cluster of antennas as one group of antenna sets, by described enb sector It is split into two sub- sectors, wherein, every sub- sector corresponds to four antennas.
9. device according to claim 8, wherein, described enb sector can be supported double Times carrier number.
10. device according to claim 8, wherein, described two sub- sectors are distinguished Corresponding two or more carrier wave can carry out carrier aggregation.
11. devices any one of according to Claim 8 to 10, wherein, described sky There is between line predetermined antenna spacing.
12. devices according to claim 8, wherein, this device also includes:
Second packet device, for proceeding to be grouped by described antenna sets, by described enb Sector is split into four sub- sectors, and wherein, every sub- sector corresponds to two antennas.
CN201510416164.7A 2015-07-15 2015-07-15 A kind of method and apparatus carrying out cell splitting in the sector eNB CN106341167B (en)

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Publication number Priority date Publication date Assignee Title
CN101394647A (en) * 2007-09-21 2009-03-25 大唐移动通信设备有限公司 Method and system for realizing cell networking
CN102783120A (en) * 2009-12-17 2012-11-14 马维尔国际贸易有限公司 MIMO feedback schemes for cross-polarized antennas
US20130116011A1 (en) * 2011-11-07 2013-05-09 Alcatel-Lucent Base station and radio unit for creating overlaid sectors with carrier aggregation
CN103167507A (en) * 2011-12-19 2013-06-19 中国移动通信集团公司 Cell splitting method, cell splitting device and base station device
US20140139395A1 (en) * 2012-11-16 2014-05-22 Max Solondz Multi-sector antenna structure
KR20140114675A (en) * 2013-03-19 2014-09-29 에스케이텔레콤 주식회사 Antenna apparatus for base station and control method thereof
CN104347955A (en) * 2014-09-30 2015-02-11 北京邮电大学 Antenna directional pattern optimization method for active antenna vertical cell splitting

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101394647A (en) * 2007-09-21 2009-03-25 大唐移动通信设备有限公司 Method and system for realizing cell networking
CN102783120A (en) * 2009-12-17 2012-11-14 马维尔国际贸易有限公司 MIMO feedback schemes for cross-polarized antennas
US20130116011A1 (en) * 2011-11-07 2013-05-09 Alcatel-Lucent Base station and radio unit for creating overlaid sectors with carrier aggregation
CN103167507A (en) * 2011-12-19 2013-06-19 中国移动通信集团公司 Cell splitting method, cell splitting device and base station device
US20140139395A1 (en) * 2012-11-16 2014-05-22 Max Solondz Multi-sector antenna structure
KR20140114675A (en) * 2013-03-19 2014-09-29 에스케이텔레콤 주식회사 Antenna apparatus for base station and control method thereof
CN104347955A (en) * 2014-09-30 2015-02-11 北京邮电大学 Antenna directional pattern optimization method for active antenna vertical cell splitting

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