CN105450372A - LTE co-frequency linear networking method and device capable of preventing pilot frequency interference - Google Patents
LTE co-frequency linear networking method and device capable of preventing pilot frequency interference Download PDFInfo
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Abstract
An embodiment of the invention provides an LTE co-frequency linear networking method and device capable of preventing pilot frequency interference. The method comprises the following steps: carrying out networking on a first cell and a second cell by adopting a 4-transmit 4-receive (4T4R) work mode or a 2-transmit 2-receive (2T2R) work mode respectively, wherein the first cell and the second cell are adjacent cells in a linear distribution region; and setting PCI of the first cell and PCI of the second cell, wherein the PCI of the first cell is different from the PCI of the second cell, the result obtained through carrying out Modulus operation on 6 by the PCI of the first cell is same with the result obtained through carrying out Modulus operation on 6 by the PCI of the second cell, and pilot signals of the first cell and the second cell are not superposed, thereby effectively preventing data signals of adjacent cells from being disturbed, and effectively avoiding mutual interference of the pilot signals of the adjacent cells.
Description
Technical field
The embodiment of the present invention relates to signal processing technology, particularly relates to a kind of Long Term Evolution (English: LongTermEvolution, the abbreviation: LTE) with the method and apparatus of frequency linear networking of avoiding Pilot Interference.
Background technology
LTE technology due to bandwidth very wide, generally adopt identical networking mode when carrying out networking, the syntople between the neighbor cell of identical networking is fairly simple.
Because no matter whether the downlink reference signal of LTE having business, each community can continuous print pilot signal transmitted, such as: under the covering scene such as railway, highway, adopt linear networking, if community, current place is the first community, next adjacent community is the second community, while the user terminal in the first community obtains business datum, in second community, not any user terminal does not have business, the second community still continuous print to the user terminal pilot signal transmitted in coverage.
But even if the signal of each cell edge is fine, adjacent cell still pilot signal transmitted when not having business, then have the down-bound pilot frequency signal of this community of data service or data-signal also can be disturbed, causes downstream rate slow.
Summary of the invention
The LTE of Pilot Interference that what the embodiment of the present invention provided avoid, with the method and apparatus of linear networking frequently, effectively prevent the interference of down-bound pilot frequency signal between neighbor cell or data-signal, improves downstream rate.
Embodiment of the present invention first aspect provides a kind of LTE of Pilot Interference that avoids with the method for frequency linear networking, comprising:
Adopt 4 antenna port mode of operations or 2 antenna port mode of operations to carry out networking respectively to the first community and the second community, described first community and described second community are the neighbor cell on linear distribution region;
The PCI of described first community and the PCI of described second community is set respectively;
Wherein, the PCI of described first community is different from the PCI of described second community, and the PCI of described first community is to PCI the coming to the same thing to 6 modulo operations of the result of 6 modulo operations and described second community, to avoid the Pilot Interference between described first community and described second community.
Second aspect present invention provides a kind of LTE of Pilot Interference that avoids with the device of frequency linear networking, comprising:
Processing module, for adopting 4 antenna port mode of operations or 2 antenna port mode of operations to carry out networking respectively to the first community and the second community, described first community and described second community are the neighbor cell on linear distribution region;
Module is set, for the PCI of the PCI and described second community that arrange described first community respectively;
Wherein, the PCI of described first community is different from the PCI of described second community, and the PCI of described first community to the PCI of the result of 6 modulo operations and described second community to 6 modulo operations come to the same thing avoid the Pilot Interference between described first community and described second community.
What the embodiment of the present invention provided avoids the LTE of Pilot Interference with the method and apparatus of frequency linear networking, by adopting 4 antenna port mode of operations or 2 antenna port mode of operations to the neighbor cell on linear distribution region, and the PCI of the first adjacent community and the second community is set to different value, and the PCI of the first community carries out the result of modulo operation and the PCI of the second community to 6, and to carry out the result of modulo operation to 6 equal, first community and the second community use different antenna ports cover both overlapping coverage area, pilot signal is not each other overlapped, also the data-signal of neighbor cell can not be interfered with, thus effectively avoid interfering with each other of the pilot signal of neighbor cell, improve descending throughput.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, 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 that the present invention avoids the LTE of Pilot Interference with the flow chart of the embodiment of the method one of frequency linear networking;
Fig. 2 is that the present invention avoids the LTE of Pilot Interference with the flow chart of the embodiment of the method two of frequency linear networking;
Fig. 3 is that the present invention avoids the LTE of Pilot Interference with the networking schematic diagram of the embodiment of the method two of frequency linear networking;
Fig. 4 is that the present invention avoids the LTE of Pilot Interference with the public reference signal schematic diagram of each port of the embodiment of the method two of frequency linear networking;
Fig. 5 is that the present invention avoids the LTE of Pilot Interference with the flow chart of the embodiment of the method three of frequency linear networking;
Fig. 6 is that the present invention avoids the LTE of Pilot Interference with the networking schematic diagram of the embodiment of the method three of frequency linear networking;
Fig. 7 is that the present invention avoids the LTE of Pilot Interference with the public reference signal schematic diagram of each port of the embodiment of the method three of frequency linear networking;
Fig. 8 is that the present invention avoids the LTE of Pilot Interference with the structural representation of the device embodiment one of frequency linear networking.
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.
Fig. 1 is that the present invention avoids the LTE of Pilot Interference with the flow chart of the embodiment of the method one of frequency linear networking, the method that the embodiment of the present invention provides is applied to the covering scene such as railway, highway, the syntople of community is fairly simple, and this is avoided the LTE of Pilot Interference with the concrete steps of the frequently method of linear networking to be:
S101: adopt 4 antenna port mode of operations or 2 antenna port mode of operations to carry out networking respectively to the first community and the second community, described first community and described second community are the neighbor cell on linear distribution region.
In the present embodiment, 4 antenna ports can be adopted (English: 4Transmit4Receive, be called for short: 4T4R) mode of operation or 2 antenna ports (English: 2Transmit2Receive, be called for short: 2T2R), networking is carried out to the community of all linear networkings, wherein, this first community and the second community only represent adjacent Liang Ge community, be not only have Liang Ge community, the method of the present embodiment can be applied to the linear networking mode of the multiple communities being more than or equal to, and concrete community number is selected according to actual conditions.
S102: arrange respectively described first community Physical Cell Identifier (English: PhysicalCellID, PCI) and the PCI of described second community be called for short:; Wherein, the PCI of described first community is different from the PCI of described second community, and the PCI of described first community is to PCI the coming to the same thing to 6 modulo operations of the result of 6 modulo operations and described second community, to avoid the Pilot Interference between described first community and described second community.
In the present embodiment, in order to evade the interference of the pilot signal between neighbor cell, need to carry out special setting to the PCI of each community, identical to ensure the pilot frequency locations of every two neighbor cell same ports.For the first community and the second community, concrete PCI set-up mode is: because the remainder of each community PCI to 6 modulo operations determines the sub-carrier number of the position overall offset of cell pilots on frequency domain, it is equal that the PCI arranging the first community accordingly carries out the result of modulo operation to 6 PCI carrying out modulo operation and the second community to 6, equals a fixed value (i.e. the PCIMOD6=fixed value of PCIMOD6=second community of the first community).
What the present embodiment provided avoids the LTE of Pilot Interference with the method for frequency linear networking, networking is carried out by adopting 4 antenna port mode of operations or 2 antenna port mode of operations to the first adjacent community and the second community, and the PCI of the first community is set to different from the PCI of the second community, and the PCI of the first community is to PCI the coming to the same thing to 6 modulo operations of the result of 6 modulo operations and the second community, thus make the position of the public reference signal of the respective antenna port of each community identical, neighbor cell is coordinated to use different port covering overlapping coverage areas therebetween, make the pilot signal of each port of overlapping coverage area neither overlapping, also data-signal can not be interfered with, thus effectively avoid the Pilot Interference between neighbor cell.
Fig. 2 is that the present invention avoids the LTE of Pilot Interference with the flow chart of the embodiment of the method two of frequency linear networking, as shown in Figure 2, under employing 4 antenna port mode of operation carries out networking situation respectively to described first community and described second community, described first community comprises port 0, port one, port 2 and port 3, and described second community comprises port 0, port one, port 2 and port 3, then the concrete steps of the method for the present embodiment are:
S201: adopt 4 antenna port mode of operations to carry out networking respectively to the first community and the second community, described first community and described second community are the neighbor cell on linear distribution region.
S202: the antenna of the port 0 and port 3 place that arrange described first community covers towards the direction of on linear distribution region, and the antenna at the port one of described first community and port 2 place covers towards another direction on linear distribution region; The direction that the antenna of the port 0 and port 3 place that arrange described second community is identical with the antenna at port 3 place with the port 0 of described first community on linear distribution region covers, and the port one of the described second community direction identical with the antenna at port 2 place with the port one of described first community on linear distribution region with the antenna at port 2 place covers.
In the present embodiment, each community comprises four ports: port 0, port one, port 2 and port 3, in networking process, make the port 0 of the first community and the antenna at port 3 place towards a direction in networking linear distribution direction, the port one of the first community and the antenna at port 2 place are towards the direction contrary with port 3 place antenna with port 0, adjacent community too, second community port 0 the same with the antenna at the port 0 of the first community and port 3 place with the antenna direction of port 3, the port one of the second community is identical with the antenna direction at port 2 place with the port one of the first community with the antenna at port 2 place, namely two port numbers that adjacent Liang Ge community is relative are not identical, Fig. 3 is that the present invention avoids the LTE of Pilot Interference with the networking schematic diagram of the embodiment of the method two of frequency linear networking, as shown in Figure 3, the port one of the first community is relative with port 3 with the port 0 of the second community with port 2.
S203: the PCI of described first community and the PCI of described second community is set respectively; Wherein, the PCI of described first community is different from the PCI of described second community, and the PCI of described first community is to PCI the coming to the same thing to 6 modulo operations of the result of 6 modulo operations and described second community, to avoid the Pilot Interference between described first community and described second community.
Further, the downlink transfer pattern of described first community and described second community is set to diversity mode 2 (TM2) or diversity mode 4 (TM4) respectively.
In the present embodiment, especially, networking plan for adopting 4T4R mode of operation: point-to-point employing TM4 or TM2 pattern, do not advise adopting TM3 pattern (the equivalent channel frequency domain that long time delay diversity produces can produce acute variation, but due to the very sparse channel estimating be unfavorable for now of the pilot signal on port 3 and port 2), the PCI configuration that neighbor cell will adopt pilot frequency locations identical.
Fig. 4 is that the present invention avoids the LTE of Pilot Interference with the public reference signal schematic diagram of each port of the embodiment of the method two of frequency linear networking, what represent is the reference signal location drawing of four antenna ports of LTE standard regulation, abscissa is the symbol sebolic addressing of time domain, ordinate is the subcarrier sequence of frequency domain, as shown in Figure 4, in figure, R0, R1, R2 and R3 square is reference signal position, and black bars is the position of not signaling.Because neighbor cell is different in the port numbers of overlapping coverage area, therefore pilot tone is namely not overlapping each other, can not interfere with data-signal yet, thus avoids the Pilot Interference of adjacent area.
What the present embodiment provided avoids the LTE of Pilot Interference with the method for frequency linear networking, by adopting 4T4R mode of operation to carry out networking to the first adjacent community and the second community, the port 0 of the first community is arranged with the direction of the antenna at port 3 place towards identical networking linear distribution direction with the port 0 of the second community with port 3, and the port one of the first community is arranged with the antenna at port 2 place another direction towards identical networking linear distribution direction with the port one of the second community with port 2, and the PCI of the first community is set to different from the PCI of the second community, and the PCI of the first community is to PCI the coming to the same thing to 6 modulo operations of the result of 6 modulo operations and the second community, thus make the position of the public reference signal of the respective antenna port of each community identical, due to neighbor cell antenna port towards special setting, at the covering crossover region of the first community and the second community, the port 0 of the second community and the pilot signal of port 3 drop on the port one of the first community and the retention position do not signaled of port 2, the port one of same first community and the pilot signal of port 2 drop on the port 3 of the second community and the retention position do not signaled of port 0, thus effectively avoid the pilot signal between neighbor cell mutually to disturb and pilot signal interference to the interference of data-signal.
Fig. 5 is that the present invention avoids the LTE of Pilot Interference with the flow chart of the embodiment of the method three of frequency linear networking, if adopt the networking plan of 4 antenna port mode of operations recited above, once a path deterioration, by causing the business of transmitting diversity normally to receive, affect reliability.The occasion that reliability requirement is high is advised to the networking plan of use 2 antenna port mode of operation, in the present embodiment, 2 antenna port mode of operations are adopted to carry out networking respectively to described first community and described second community, described first community comprises port 0 and port one, and described second community comprises port 0 and port one, then this is avoided the LTE of Pilot Interference with the concrete steps of the frequently method of linear networking to be:
S301: adopt 2 antenna port mode of operations to carry out networking respectively to the first community and the second community, described first community and described second community are the neighbor cell on linear distribution region.
S302: the antenna arranging port 0 place of described first community covers towards the direction of on linear distribution region, and the antenna at the port one place of described first community covers towards another direction on linear distribution region; The direction arranging the antenna at port 0 place of described second community identical with the antenna at port 0 place of described first community on linear distribution region covers, and the direction identical with the antenna at the port one place of described first community on linear distribution region of the antenna at the port one place of described second community covers.
In the present embodiment, each community comprises two ports: port 0 and port one, the direction of antenna towards networking linear distribution direction at port 0 place of the first community is made in networking process, and the port signal of this port 0 is (English: RadioRemoteUnit by Remote Radio Unit, be called for short: two passages RRU) send, the signal that these two ports send is identical, the antenna at the port one place of the first community is towards the direction contrary with port 0 place antenna, and the port signal at port one place is also in transmission by two passage RRU, adjacent community too, second community the antenna direction at port 0 place the same with the antenna at port 0 place of the first community, the antenna at the port one place of the second community is identical with the antenna direction at the port one place of the first community, namely two port numbers that adjacent Liang Ge community is relative are not identical, and the signal of each port of each community is sent by two passages of RRU.Fig. 6 is that the present invention avoids the LTE of Pilot Interference with the networking schematic diagram of the embodiment of the method three of frequency linear networking, and as shown in Figure 6, the port 0 of the first community is relative with the port one of the second community.
S303: the PCI of described first community and the PCI of described second community is set respectively; Wherein, the PCI of described first community is different from the PCI of described second community, and the PCI of described first community is to PCI the coming to the same thing to 6 modulo operations of the result of 6 modulo operations and described second community, to avoid the Pilot Interference between described first community and described second community.
Further, the port 0 of described first community and the port one of described first community include the first radio-frequency channel and the second radio-frequency channel, then the reference time delay of described first radio-frequency channel of each port and the downstream signal of described second radio-frequency channel is set to 0.3 microsecond to 0.6 microsecond.
In the present embodiment, in order to increase covering, the port 0 of the first community and the signal of port one send by two passages (the first radio-frequency channel and the second radio-frequency channel) of RRU, the signal sent due to these two passages is identical, in order to avoid the signal of these two passages is by dying down after spatial and superposition, can by a bit (such as: 0.5 microsecond) transmission of the signal delay of one of them passage.
The port 0 of described second community and the port one of described second community include the 3rd radio-frequency channel and the 4th radio-frequency channel, then the reference time delay of described 3rd radio-frequency channel of each port and the downstream signal of described 4th radio-frequency channel is set to 0.3 microsecond to 0.6 microsecond.
In the present embodiment, in order to increase covering, the port 0 of the second community and the signal of port one send by two passages (the 3rd radio-frequency channel and the 4th radio-frequency channel) of RRU, the signal sent due to these two passages is identical, in order to avoid the signal of these two passages is by dying down after spatial and superposition, signal delay a period of time of one of them passage (such as: 0.5 microsecond) can be sent.
Namely in the present embodiment, the port 0 of described first community and the port one of described first community all can use 1 radio-frequency channel, also can in order to increase coverage and reliability includes the first radio-frequency channel and radio-frequency channel, 2, the second radio-frequency channel, these two radio-frequency channels or use apart more than the antenna of 10 times of wavelength, or can also use the antenna of different polarised direction.
The port 0 of described second community and the port one of described second community all can use 1 radio-frequency channel, also can in order to increase coverage and reliability includes the 3rd radio-frequency channel and radio-frequency channel, 2, the 4th radio-frequency channel, these two radio-frequency channels or use apart more than the antenna of 10 times of wavelength, or also can use the antenna of different polarised direction.
Same, similar with the networking plan of 4 antenna port mode of operations, in order to evade neighbor pilot interference, need to carry out special setting to the PCI of adjacent area.
In addition, each port of every community can be allowed to comprise two radio-frequency channels, the antenna of two radio-frequency channels is apart more than 10 times of wavelength, or use dual polarized antenna. or the constant time lag of the downstream signal of one of them radio-frequency channel and the downstream signal of another radio-frequency channel, the suggestion of this time delay is greater than 0.3us, is less than 0.6us.
Fig. 7 is that the present invention avoids the LTE of Pilot Interference with the public reference signal schematic diagram of each port of the embodiment of the method three of frequency linear networking, represent the dual-port reference signal position that LTE standard specifies, abscissa is the symbol sebolic addressing of time domain, and ordinate is the subcarrier sequence of frequency domain.The direction that the passage of port 0 and the passage of port one cover is contrary, neighbor cell port 0 is identical with this community with port one passage coverage direction, ensure that the port numbers that the adjacent passage area of coverage uses is different, R0 in figure, R1 is reference signal position, black bars is not for signaling position, due to neighbor cell antenna port towards special setting, at the covering crossover region of the first community and the second community, the pilot signal of the port 0 of the second community drops on the retention position do not signaled of the port one of the first community, thus effectively avoid the pilot signal between neighbor cell mutually to disturb and pilot signal interference to the interference of data-signal.
What the present embodiment provided avoids the LTE of Pilot Interference with the method for frequency linear networking, by adopting 2 antenna port mode of operations to carry out networking to the first adjacent community and the second community, the direction of the antenna at the port 0 of the first community and port 0 place of the second community towards identical networking linear distribution direction is arranged, and the antenna at the port one of the first community and the port one place of the second community another direction towards identical networking linear distribution direction is arranged, and the PCI of the first community is set to different from the PCI of the second community, and the PCI of the first community is to PCI the coming to the same thing to 6 modulo operations of the result of 6 modulo operations and the second community, thus make the position of the public reference signal of each antenna port of each community different, pilot signal is not overlapping, thus effectively avoid the Pilot Interference between neighbor cell.
Fig. 8 is that the present invention avoids the LTE of Pilot Interference with the structural representation of the device embodiment one of linear networking frequently, and as shown in Figure 8, this is avoided the LTE of Pilot Interference to comprise with the device 10 of linear networking frequently: processing module 11 and arrange module 12; Processing module 11, for adopting 4 antenna port mode of operations or 2 antenna port mode of operations to carry out networking respectively to the first community and the second community, described first community and described second community are the neighbor cell on linear distribution region; Module 12 is set, for the PCI of the PCI and described second community that arrange described first community respectively; Wherein, the PCI of described first community is different from the PCI of described second community, and the PCI of described first community to the PCI of the result of 6 modulo operations and described second community to 6 modulo operations come to the same thing avoid the Pilot Interference between described first community and described second community.
What the present embodiment provided avoids the LTE of Pilot Interference with the device of frequency linear networking, for performing the technical scheme of the method shown in Fig. 1, realize principle and technique effect is similar, 4T4R mode of operation or 2T2R mode of operation is adopted to carry out networking by processing module to the first adjacent community and the second community, arranging module is set to different by the PCI of the first community from the PCI of the second community, and the PCI of the first community is to PCI the coming to the same thing to 6 modulo operations of the result of 6 modulo operations and the second community, thus make the position of the public reference signal of each antenna port of each community different, pilot signal is not overlapping, thus effectively avoid the Pilot Interference between neighbor cell.
Avoid in the device embodiment two of the LTE of Pilot Interference with frequency linear networking in the present invention, on the basis of above-described embodiment, if described processing module 11 adopts 4 antenna port mode of operations to carry out networking respectively to described first community and described second community, described first community comprises port 0, port one, port 2 and port 3, and described second community comprises port 0, port one, port 2 and port 3, then described arrange module 12 also for:
The antenna of the port 0 and port 3 place that arrange described first community covers towards the direction of on linear distribution region, and the antenna at the port one of described first community and port 2 place covers towards another direction on linear distribution region;
The direction that the antenna of the port 0 and port 3 place that arrange described second community is identical with the antenna at port 3 place with the port 0 of described first community on linear distribution region covers, and the port one of the described second community direction identical with the antenna at port 2 place with the port one of described first community on linear distribution region with the antenna at port 2 place covers.
Optionally, if described processing module 11 adopts 2 antenna port mode of operations to carry out networking respectively to described first community and described second community, described first community comprises port 0 and port one, and described second community comprises port 0 and port one, then described arrange module 12 also for:
The antenna arranging port 0 place of described first community covers towards the direction of on linear distribution region, and the antenna at the port one place of described first community covers towards another direction on linear distribution region;
The direction arranging the antenna at port 0 place of described second community identical with the antenna at port 0 place of described first community on linear distribution region covers, and the direction identical with the antenna at the port one place of described first community on linear distribution region of the antenna at the port one place of described second community covers.
Optionally, described module 12 is set also for the downlink transfer pattern of described first community and described second community is set to TM2 diversity mode or TM4 diversity mode respectively.
Optionally, the port 0 of described first community and the port one of described first community include the first radio-frequency channel and the second radio-frequency channel, then describedly arrange module 12 also for the reference time delay of described first radio-frequency channel of each port and the downstream signal of described second radio-frequency channel is set to 0.3 microsecond to 0.6 microsecond;
The port 0 of described second community and the port one of described second community include the 3rd radio-frequency channel and the 4th radio-frequency channel, then describedly arrange module 12 also for the reference time delay of described 3rd radio-frequency channel of each port and the downstream signal of described 4th radio-frequency channel is set to 0.3 microsecond to 0.6 microsecond.
The LTE of Pilot Interference that what the present embodiment provided avoid, with the device of linear networking frequently, for performing the technical scheme of the method shown in Fig. 1-Fig. 7, realizing principle and technique effect is similar, not repeating them here.
One of ordinary skill in the art will appreciate that: all or part of step realizing above-mentioned each embodiment of the method can have been come by the hardware that program command is relevant.Aforesaid program can be stored in a computer read/write memory medium.This program, when performing, performs the step comprising above-mentioned each embodiment of the method; And aforesaid storage medium comprises: ROM, RAM, magnetic disc or CD etc. various can be program code stored medium.
Last it is noted that above each embodiment is only in order to illustrate technical scheme of the present invention, be not intended to limit; Although with reference to foregoing embodiments to invention 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 some or all of technical characteristic; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the scope of various embodiments of the present invention technical scheme.
Claims (10)
1. avoid the LTE of Pilot Interference with a method for frequency linear networking, it is characterized in that, comprising:
Adopt 4 antenna port mode of operations or 2 antenna port mode of operations to carry out networking respectively to the first community and the second community, described first community and described second community are the neighbor cell on linear distribution region;
The Physical Cell Identifier PCI of described first community and the PCI of described second community is set respectively;
Wherein, the PCI of described first community is different from the PCI of described second community, and the PCI of described first community is to PCI the coming to the same thing to 6 modulo operations of the result of 6 modulo operations and described second community, to avoid the Pilot Interference between described first community and described second community.
2. method according to claim 1, it is characterized in that, according to 4 antenna port mode of operations, respectively networking is carried out to described first community and described second community, described first community comprises port 0, port one, port 2 and port 3, and described second community comprises port 0, port one, port 2 and port 3, then described the PCI of described first community and the PCI of described second community is set respectively before, also comprise:
The antenna of the port 0 and port 3 place that arrange described first community covers towards the direction of on linear distribution region, and the antenna at the port one of described first community and port 2 place covers towards another direction on linear distribution region;
The direction that the antenna of the port 0 and port 3 place that arrange described second community is identical with the antenna at port 3 place with the port 0 of described first community on linear distribution region covers, and the port one of the described second community direction identical with the antenna at port 2 place with the port one of described first community on linear distribution region with the antenna at port 2 place covers.
3. method according to claim 1, it is characterized in that, according to 2 antenna port mode of operations, respectively networking is carried out to described first community and described second community, described first community comprises port 0 and port one, and described second community comprises port 0 and port one, then described the PCI of described first community and the PCI of described second community is set respectively before, also comprise:
The antenna arranging port 0 place of described first community covers towards the direction of on linear distribution region, and the antenna at the port one place of described first community covers towards another direction on linear distribution region;
The direction arranging the antenna at port 0 place of described second community identical with the antenna at port 0 place of described first community on linear distribution region covers, and the direction identical with the antenna at the port one place of described first community on linear distribution region of the antenna at the port one place of described second community covers.
4. method according to claim 2, is characterized in that, the downlink transfer pattern of described first community and described second community is set to diversity mode 2 or diversity mode 4 respectively.
5. method according to claim 3, it is characterized in that, the port 0 of described first community and the port one of described first community include the first radio-frequency channel and the second radio-frequency channel, then the reference time delay of described first radio-frequency channel of each port and the downstream signal of described second radio-frequency channel is set to 0.3 microsecond to 0.6 microsecond;
The port 0 of described second community and the port one of described second community include the 3rd radio-frequency channel and the 4th radio-frequency channel, then the reference time delay of described 3rd radio-frequency channel of each port and the downstream signal of described 4th radio-frequency channel is set to 0.3 microsecond to 0.6 microsecond.
6. avoid the LTE of Pilot Interference with a device for frequency linear networking, it is characterized in that, comprising:
Processing module, for adopting 4 antenna port mode of operations or 2 antenna port mode of operations to carry out networking respectively to the first community and the second community, described first community and described second community are the neighbor cell on linear distribution region;
Module is set, for the PCI of the Physical Cell Identifier PCI and described second community that arrange described first community respectively;
Wherein, the PCI of described first community is different from the PCI of described second community, and the PCI of described first community to the PCI of the result of 6 modulo operations and described second community to 6 modulo operations come to the same thing avoid the Pilot Interference between described first community and described second community.
7. device according to claim 6, it is characterized in that, if described processing module adopts 4 antenna port mode of operations to carry out networking respectively to described first community and described second community, described first community comprises port 0, port one, port 2 and port 3, and described second community comprises port 0, port one, port 2 and port 3, then described arrange module also for:
The antenna of the port 0 and port 3 place that arrange described first community covers towards the direction of on linear distribution region, and the antenna at the port one of described first community and port 2 place covers towards another direction on linear distribution region;
The direction that the antenna of the port 0 and port 3 place that arrange described second community is identical with the antenna at port 3 place with the port 0 of described first community on linear distribution region covers, and the port one of the described second community direction identical with the antenna at port 2 place with the port one of described first community on linear distribution region with the antenna at port 2 place covers.
8. device according to claim 6, it is characterized in that, if described processing module adopts 2 antenna port mode of operations to carry out networking respectively to described first community and described second community, described first community comprises port 0 and port one, and described second community comprises port 0 and port one, then described arrange module also for:
The antenna arranging port 0 place of described first community covers towards the direction of on linear distribution region, and the antenna at the port one place of described first community covers towards another direction on linear distribution region;
The direction arranging the antenna at port 0 place of described second community identical with the antenna at port 0 place of described first community on linear distribution region covers, and the direction identical with the antenna at the port one place of described first community on linear distribution region of the antenna at the port one place of described second community covers.
9. device according to claim 7, is characterized in that, describedly arranges module also for the downlink transfer pattern of described first community and described second community is set to TM2 diversity mode or TM4 diversity mode respectively.
10. device according to claim 8, it is characterized in that, the port 0 of described first community and the port one of described first community include the first radio-frequency channel and the second radio-frequency channel, then describedly arrange module also for the reference time delay of described first radio-frequency channel of each port and the downstream signal of described second radio-frequency channel is set to 0.3 microsecond to 0.6 microsecond;
The port 0 of described second community and the port one of described second community include the 3rd radio-frequency channel and the 4th radio-frequency channel, then describedly arrange module also for the reference time delay of described 3rd radio-frequency channel of each port and the downstream signal of described 4th radio-frequency channel is set to 0.3 microsecond to 0.6 microsecond.
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