CN104581649A - LTE cluster system frequency band selection method and device - Google Patents
LTE cluster system frequency band selection method and device Download PDFInfo
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- CN104581649A CN104581649A CN201310505185.7A CN201310505185A CN104581649A CN 104581649 A CN104581649 A CN 104581649A CN 201310505185 A CN201310505185 A CN 201310505185A CN 104581649 A CN104581649 A CN 104581649A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
- H04W16/02—Resource partitioning among network components, e.g. reuse partitioning
- H04W16/12—Fixed resource partitioning
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
- H04W4/08—User group management
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
- H04W4/10—Push-to-Talk [PTT] or Push-On-Call services
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
- H04W84/04—Large scale networks; Deep hierarchical networks
- H04W84/08—Trunked mobile radio systems
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- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The invention provides an LTE cluster system frequency band selection method and device. The method comprises the following steps: calculating modulus 3 values of PCIs in all communities and distributing different cluster group call frequency bands for the communities with the different modulus 3 values; transmitting distributed cluster group call data by utilizing the distributed frequency bands. Through the LTE cluster system frequency band selection method and device provided by the invention, the modulus 3 values of the PCIs in all the communities are calculated, and the different frequency bands are distributed for the communities with the different modulus 3 values of the PCIs, so that the interference when a user performs resource scheduling is reduced, and further, the problem that edge user cluster group call resources cannot be analyzed is solved.
Description
Technical field
The present invention relates to band selection technique field, particularly a kind of LTE group system band selection methods and device.
Background technology
LTE(Long Term Evolution, Long Term Evolution) group system comprises two logic channels, TCCH(clustered control channel) and TTCH(group service channel).Wherein, TCCH is the special point-to-multipoint down channel of cluster, for transmitting group's control information, as group calling foundation, group calling release, right of speech notice and short message etc.TTCH is the special point-to-multipoint down channel of cluster, for transmitting group's downlink service data.
At present, TCCH and TTCH all adopts the mode of dynamic dispatching or semi-persistent scheduling, as shown in Figure 1, the user of community A and B intersection region, community D, receive TCCH and the TTCH information of community A and community B simultaneously, and this Liang Ge community TCCH and TTCH information are all at PDSCH(Physical Downlink Shared Channel on frequency domain, physical down link sharing channel) above use identical algorithms to dispatch.
But frequency domain resource of the prior art is identical, thus producing serious interference when carrying out scheduling of resource, causing cluster multi call information to resolve.
Summary of the invention
(1) technical problem solved
The technical problem that the present invention solves is: the problem how solving user's serious interference when carrying out scheduling of resource.
(2) technical scheme
For solving the problem, the invention provides a kind of LTE group system band selection methods, comprising:
The mould 3 calculating the Physical Cell Identifier PCI of each community is worth, for mould 3 is worth the different cluster multi call frequency range of different cell allocation;
Utilize the frequency range of distributing, send the described cluster multi call data of distributing.
Preferably, the mould 3 of the Physical Cell Identifier PCI of described each community of calculating is worth, and comprises further:
For co-sited cell allocation PCI mould 3 is worth different PCI, for neighbor cell allocation PCI mould 3 is worth different PCI.
Preferably, be describedly worth the different cluster multi call frequency range of different cell allocation for mould 3, specifically comprise:
Frequency partition is become three frequency ranges;
When mould 3 value of community PCI is respectively 0,1 or 2, the frequency of a frequency range is distributed arbitrarily in Ze Weigai community.
Preferably, the equal decile of length of described three frequency ranges.
For solving the problem, present invention also offers a kind of LTE group system frequency band selection device, comprising:
Computing module, the mould 3 for the Physical Cell Identifier PCI calculating each community is worth, and result of calculation is transferred to distribution module;
Described distribution module, for being that mould 3 is worth the different cluster multi call frequency range of different cell allocation according to described result of calculation, and is transferred to sending module by allocation result;
Described sending module, for utilizing the frequency range of distribution, sends the described cluster multi call data of distributing.
Preferably, described distribution module, also for being worth different PCI for co-sited cell allocation PCI mould 3, for neighbor cell allocation PCI mould 3 is worth different PCI.
Preferably, described device also comprises:
Divide module, for frequency partition being become three frequency ranges;
Described distribution module, also for when mould 3 value of community PCI is respectively 0,1 or 2, the frequency of a frequency range is distributed arbitrarily in Ze Weigai community.
Preferably, the equal decile of length of described three frequency ranges.
Preferably, described device is arranged in a base station.
(3) beneficial effect
The present invention is by providing a kind of LTE group system band selection methods and device, be worth by the mould 3 calculating each community PCI, mould 3 for PCI is worth the different frequency range of different cell allocation, thus decrease the interference of user when carrying out scheduling of resource, and then avoid the problem that edge customer cluster multi call resource cannot resolve.
Accompanying drawing explanation
Fig. 1 is the method flow diagram that the embodiment of the present invention one provides;
Fig. 2 is the method flow diagram that the embodiment of the present invention two provides;
Fig. 3 is 7 adjacent schematic diagrames in community that the embodiment of the present invention two provides;
Fig. 4 is 7 community group calling frequency range configuration schematic diagram that the embodiment of the present invention two provides;
Fig. 5 is the mutual adjacent schematic diagram in 3 communities that the embodiment of the present invention two provides;
Fig. 6 is the apparatus structure schematic diagram that the embodiment of the present invention three provides.
Embodiment
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.
Embodiment 1:
In order to solve the problem of user's serious interference when carrying out scheduling of resource in prior art, embodiments provide a kind of LTE group system band selection methods, as shown in Figure 1, the method comprises the method flow chart:
Step 101: the mould 3 calculating each community PCI is worth, for mould 3 is worth the different cluster multi call frequency range of different cell allocation;
Step 102: utilize the frequency range of distributing, sends the described cluster multi call data of distributing.
The embodiment of the present invention is worth by calculating the mould 3 of each community PCI, and the mould 3 for PCI is worth the different frequency range of different cell allocation, thus decreases the interference of user when carrying out scheduling of resource, and then avoids the problem that edge customer cluster multi call resource cannot resolve.
By being worth different PCI for co-sited cell allocation PCI mould 3, for neighbor cell allocation PCI mould 3 is worth different PCI, thus make when distributing different frequency ranges according to the difference of PCI mould 3 value, the frequency that neighbor cell or co-sited community are used is different frequency range, decrease the interference of minizone, improve the reception of cluster multi call resource.
By frequency partition being become three frequency ranges, then the value of PCI mould 3 has 3, is worth difference according to PCI mould 3, is the frequency range that cell allocation is different, thus decreases the interference of minizone.
Embodiment 2
For solving the problem of user's serious interference when carrying out scheduling of resource, second embodiment of the invention provides a kind of LTE group system band selection methods, and the method flow chart as shown in Figure 2, comprising:
Step 201: be each cell allocation cluster multi call data;
Wherein, cluster multi call resource comprises clustered control channel resource and group service channel resource.
Step 202: according to Physical Cell Identifier PCI allocation algorithm, for PCI is distributed respectively in each community;
Wherein, PCI(Physical Cell Identifier, Physical Cell Identifier) at TD-LTE(Time Division Long Term Evolution, timesharing Long Term Evolution) have 504 in system, if occur with the same PCI of frequency, then causing strong jamming in same community.And being limited to the available frequency band of current TD-LTE, TD-LTE probably takes the mode of identical networking, and it is particularly important that this makes PCI plan.For avoiding neighboring interval to disturb, the mould 3 of PCI should be avoided to be worth identical PCI and to distribute to adjacent area.
In embodiments of the present invention, the method for salary distribution of PCI is: for co-sited cell allocation PCI mould 3 is worth different PCI, for neighbor cell allocation PCI mould 3 is worth different PCI.
Step 203: frequency partition is become three frequency ranges;
Wherein, can be impartial by the length of three frequency ranges of frequency partition one-tenth, also can be unequal.
In embodiments of the present invention, three frequency ranges that frequency partition becomes are respectively F0, F1 and F2.Such as frequency is 100MHz, then frequency partition is become three frequency ranges, F0=1 ~ 33MHz, F1=34 ~ 66MHz, F2=67 ~ 100MHz.
Step 204: the mould 3 calculating each community PCI is worth, for mould 3 is worth the different cluster multi call frequency range of different cell allocation;
Wherein, Fn=PCI mod3 as the Fn=0 of calculation plot, is then this cell allocation F0 frequency range; As the Fn=1 of calculation plot, then it is this cell allocation F1 frequency range; As the Fn=2 of calculation plot, then it is this cell allocation F2 frequency range.
In embodiments of the present invention, for mould 3 is worth the different frequency range of different cell allocation, be not limited to above-mentioned distribution method, can for mould 3 value be 0,1 or 2 any distribution F1, F2 or F3.
Step 205: according to the frequency range of distributing, utilizes the frequency range of this distribution to send the cluster multi call data of distributing.
Be illustrated in figure 37 closely adjacent communities, when for this 7 cell allocation frequency ranges, utilize the distribution method of PCI, be respectively this 7 cell allocation frequency ranges.
Wherein, for the mould 3 of the PCI of co-sited cell allocation is worth difference, for the mould 3 of the PCI of neighbor cell allocation is worth difference.And then the different frequency range that has been these 7 cell allocation.
For community 0 is assigned with F0 frequency range, for community 3, community 5 and community 7 are all assigned with F1 frequency range, for community 2, community 4 and community 6 are all assigned with F2 frequency range, as shown in Figure 4.
As shown in Figure 5, be three mutual adjacent cell allocation frequency range schematic diagrames, according to the method that the embodiment of the present invention provides, for community A distributes F0 frequency range, for community B distributes F1 frequency range, for community C distributes F2 frequency range.Thus avoid edge customer cluster multi call resource demodulation difficult problem, solve voice/video card and to pause problem.
Embodiment 3:
The embodiment of the present invention additionally provides a kind of LTE group system frequency band selection device, as shown in Figure 6, comprising:
Computing module 601, the mould 3 for the Physical Cell Identifier PCI calculating each community is worth, and result of calculation is transferred to distribution module;
Described distribution module 602, for being that mould 3 is worth the different cluster multi call frequency range of different cell allocation according to described result of calculation, and is transferred to sending module by allocation result;
Described sending module 603, for utilizing the frequency range of distribution, sends the described cluster multi call data of distributing.
Further, described distribution module, also for being worth different PCI for co-sited cell allocation PCI mould 3, for neighbor cell allocation PCI mould 3 is worth different PCI.
Further, described device also comprises:
Divide module, for frequency partition being become three frequency ranges;
Described distribution module, also for when mould 3 value of community PCI is respectively 0,1 or 2, the frequency of a frequency range is distributed arbitrarily in Ze Weigai community.
Further, the equal decile of length of described three frequency ranges.
Further, described device is arranged in a base station.
The embodiment of the present invention is worth by the mould 3 utilizing computing module and calculate each community PCI, and the mould 3 utilizing distribution module to be PCI is worth the different frequency range of different cell allocation, thus decrease the interference of user when carrying out scheduling of resource, and then avoid the problem that edge customer cluster multi call resource cannot resolve.
Above execution mode is only for illustration of the present invention; and be not limitation of the present invention; the those of ordinary skill of relevant technical field; without departing from the spirit and scope of the present invention; can also make a variety of changes and modification; therefore all equivalent technical schemes also belong to category of the present invention, and scope of patent protection of the present invention should be defined by the claims.
Claims (9)
1. a LTE group system band selection methods, is characterized in that, comprising:
The mould 3 calculating the Physical Cell Identifier PCI of each community is worth, for mould 3 is worth the different cluster multi call frequency range of different cell allocation;
Utilize the frequency range of distributing, send the described cluster multi call data of distributing.
2. the method for claim 1, is characterized in that, the mould 3 of the Physical Cell Identifier PCI of described each community of calculating is worth, and comprises further:
For co-sited cell allocation PCI mould 3 is worth different PCI, for neighbor cell allocation PCI mould 3 is worth different PCI.
3. the method for claim 1, is characterized in that, is describedly worth the different cluster multi call frequency range of different cell allocation for mould 3, specifically comprises:
Frequency partition is become three frequency ranges;
When mould 3 value of community PCI is respectively 0,1 or 2, the frequency of a frequency range is distributed arbitrarily in Ze Weigai community.
4. method as claimed in claim 3, is characterized in that, the equal decile of length of described three frequency ranges.
5. a LTE group system frequency band selection device, is characterized in that, comprising:
Computing module, the mould 3 for the Physical Cell Identifier PCI calculating each community is worth, and result of calculation is transferred to distribution module;
Described distribution module, for being that mould 3 is worth the different cluster multi call frequency range of different cell allocation according to described result of calculation, and is transferred to sending module by allocation result;
Described sending module, for utilizing the frequency range of distribution, sends the described cluster multi call data of distributing.
6. device as claimed in claim 5, is characterized in that, described distribution module, also for being worth different PCI for co-sited cell allocation PCI mould 3, for neighbor cell allocation PCI mould 3 is worth different PCI.
7. device as claimed in claim 5, it is characterized in that, described device also comprises:
Divide module, for frequency partition being become three frequency ranges;
Described distribution module, also for when mould 3 value of community PCI is respectively 0,1 or 2, the frequency of a frequency range is distributed arbitrarily in Ze Weigai community.
8. device as claimed in claim 7, is characterized in that, the equal decile of length of described three frequency ranges.
9. the device according to any one of claim 5 ~ 8, is characterized in that, described device is arranged in a base station.
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| CN201310505185.7A CN104581649A (en) | 2013-10-23 | 2013-10-23 | LTE cluster system frequency band selection method and device |
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| CN201310505185.7A CN104581649A (en) | 2013-10-23 | 2013-10-23 | LTE cluster system frequency band selection method and device |
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| CN106068667A (en) * | 2015-07-13 | 2016-11-02 | 海能达通信股份有限公司 | A kind of LTE group system identical networking resource regulating method and device |
| CN107454675A (en) * | 2016-05-31 | 2017-12-08 | 北京信威通信技术股份有限公司 | The resource allocation methods and device of a kind of trunked communication system |
| CN108234683A (en) * | 2016-12-15 | 2018-06-29 | 普天信息技术有限公司 | PCI methods of adjustment and device under inter-frequency networking |
| WO2021073329A1 (en) * | 2019-10-18 | 2021-04-22 | 中兴通讯股份有限公司 | Method for suppressing cell co-channel interference, and base station and system |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2021073329A1 (en) * | 2019-10-18 | 2021-04-22 | 中兴通讯股份有限公司 | Method for suppressing cell co-channel interference, and base station and system |
| JP2022540261A (en) * | 2019-10-18 | 2022-09-14 | 中▲興▼通▲訊▼股▲ふぇん▼有限公司 | Method, base station and system for suppressing co-frequency interference of cells |
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