CN108990066A - A kind of downlink interference collaboration method and device of multicast unicast mixed service - Google Patents
A kind of downlink interference collaboration method and device of multicast unicast mixed service Download PDFInfo
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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
- H04W16/10—Dynamic resource partitioning
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/30—Resource management for broadcast services
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/53—Allocation or scheduling criteria for wireless resources based on regulatory allocation policies
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
- H04W72/541—Allocation or scheduling criteria for wireless resources based on quality criteria using the level of interference
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/18—TPC being performed according to specific parameters
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Abstract
The present invention provides the downlink interference collaboration method and device of a kind of multicast unicast mixed service, method particularly includes: multicast frequency band, the first unicast frequency band and the second unicast frequency band is respectively configured for two neighboring cell；Wherein, the multicast frequency band of the two neighboring cell is mutually orthogonal, the second unicast frequency band is mutually orthogonal, and the multicast frequency band of other side's cell is also served as the first unicast frequency band of this cell by the two neighboring cell；When multicast user is not present in the first community in the two neighboring cell, the multicast band transmission power of first community is reduced, and notifies the second community in the two neighboring cell that the multicast frequency band in first community is used as to the second unicast frequency band of second community.The present invention can be effectively reduced the co-channel interference between neighboring community, and on the basis of guaranteeing anti-interference, improve resource utilization to the maximum extent.
Description
Technical field
The present invention relates to field of communication technology, in particular to a kind of downlink interference collaboration method of multicast unicast mixed service
And device.
Background technique
LTE-M (LTE-Metro) system comprehensive wireless communication system as vehicle, with meeting various regions urban rail car communication industry
Business demand is principle, while guaranteeing that train operation control system securely and reliably transmits, with integrating carrying vehicle communication service.LTE-
The business that M is supported has: the urgent text issuing service of train operation control system train-ground communication business, train, train operation state
Monitoring business, Vehicular video monitoring business, PIS Vehicular video business, colony dispatching service etc..
PIS video traffic refers to video or image information by ground by broadcasting in broadcast or multicast transmission to compartment
It puts, transmission rate is downlink 2-8Mbit/s.The urgent text of train refers to that ground PIS server sends the tight of vehicle-mounted PIS terminal to
Anxious text information, it is desirable that transmission rate is not less than 10kbit/s.In view of single cell accommodates up to the capacity requirement of 6 trains, it is
Save interface-free resources, these two types of business generally use broadband cluster communication (Boardband Trunking Communication,
B-TrunC) multicast or the mode of broadcast are transmitted, that is, are eating dishes without rice or wine only to send a data, multiple row vehicle receives simultaneously.Other classes
The mode that the business of type is all made of unicast is transmitted.Therefore, in the comprehensive bearer network of LTE-M, multicast service and unicast service are mixed
It amounts to and deposits, interference coordination how is carried out between neighboring community as a urgent problem to be solved.
Resource is generally divided into high power RB resource and low by the disturbance coordination method of existing unicast and multicast mixed service
Power RB resource, multicast service preferentially uses high power RB resource, and is emitted using constant power.This disturbance coordination method is suitable
It is higher than unicast data transmission priority for muticast data transmission priority and the unfixed honeycomb of muticast data transmission bandwidth is special
With network, but be not particularly suited for the band-like covering of rail traffic, the data priority of CBTC unicast transmission is higher than PIS multicast transmission
Data priority, PIS multicast bandwidth are fixed and multicast user is the connected state receiving multicast data the characteristics of.Therefore, for track
Traffic integrated wireless communication bearing system needs to carry out unified planning design, system for the demand of multicast and unicast mixed service
Make the interference coordination schemes for meeting the comprehensive bearer network of LTE-M.
Summary of the invention
In view of this, the purpose of the present invention is to provide a kind of multicast unicasts for meeting the comprehensive bearer network of LTE-M to mix industry
The downlink interference collaboration method and device of business, the co-channel interference that can be effectively reduced between neighboring community, and it is anti-interference in guarantee
On the basis of property, resource utilization is improved to the maximum extent.
In order to achieve the above object, the present invention provides the following technical scheme that
A kind of downlink interference collaboration method of multicast unicast mixed service, comprising:
Multicast frequency band, the first unicast frequency band and the second unicast frequency band is respectively configured for two neighboring cell；Wherein, this is adjacent
The multicast frequency band of two cells is mutually orthogonal, the second unicast frequency band is mutually orthogonal, and the two neighboring cell is by other side's cell
Multicast frequency band also serves as the first unicast frequency band of this cell；
When multicast user is not present in the first community in the two neighboring cell, the multicast frequency band hair of first community is reduced
Power is penetrated, and notifies second community in the two neighboring cell that the multicast frequency band in first community is used as the of second community
Two unicast frequency bands.
A kind of downlink interference collaboration device of multicast unicast mixed service, comprising: configuration unit, coordination unit；
The configuration unit, for multicast frequency band, the first unicast frequency band, the second unicast to be respectively configured for two neighboring cell
Frequency band；Wherein, the multicast frequency band of the two neighboring cell is mutually orthogonal, the second unicast frequency band is mutually orthogonal, and this is two neighboring
The multicast frequency band of other side's cell is also served as the first unicast frequency band of this cell by cell；
The coordination unit, for reducing by the when multicast user is not present in the first community in the two neighboring cell
The multicast band transmission power of one cell, and notify the second community in the two neighboring cell by the multicast in first community frequently
Band is used as the second unicast frequency band of second community.
As can be seen from the above technical solution, in the present invention, by the way that multicast frequency band, first is respectively configured for two neighboring cell
Unicast frequency band and the second unicast frequency band, and guarantee that the multicast frequency band of the two neighboring cell is mutually orthogonal, the second unicast frequency band phase
It is mutually orthogonal；The co-channel interference that can be effectively reduced between neighboring community；Allow the two neighboring cell by the multicast of other side simultaneously
Frequency band also serves as the first unicast frequency band of this cell；And multicast user is not present in any cell in the two neighboring cell
When, by reducing the multicast band transmission power of the cell, make the multicast frequency band of the cell can also be simultaneously as adjacent another
Second unicast frequency band of cell uses, to can improve the utilization of resources to the maximum extent on the basis of guaranteeing anti-interference
Rate.
Detailed description of the invention
Fig. 1 is the flow chart of the downlink interference collaboration method of multicast unicast mixed service of the embodiment of the present invention；
Fig. 2 is the coverage map of the two neighboring cell of the embodiment of the present invention；
Fig. 3 is the band resource configuration schematic diagram of the two neighboring cell of the embodiment of the present invention；
Fig. 4 is the dynamic adjustment flow chart of the multicast band transmission power of A cell of the embodiment of the present invention；
Fig. 5 is the dynamic allocation flow chart of the unicast band resource of B cell of the embodiment of the present invention；
Fig. 6 is the structural schematic diagram of the downlink interference collaboration device of multicast unicast mixed service of the embodiment of the present invention.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawing and according to embodiment,
Technical solution of the present invention is described in detail.
In a wireless communication system, the terminal user in cell is divided into central user and edge customer.The letter of central user
Therefore the interference for number being not easily susceptible to neighboring community's subscriber signal when carrying out business transmission, can use low power transmissions.And
Interference of the signal of edge customer vulnerable to neighboring community's subscriber signal, it is therefore possible to use high power transmission.
In the present invention, the characteristics of being based on rail transit field communication carrier business needs to configure multicast for each cell
Frequency band and unicast frequency band.For multicast service, due to using B-TrunC technology, multiple cells may belong to same group,
Therefore in order to avoid co-channel interference, the multicast frequency band between neighboring community needs to be mutually orthogonal.For unicast service,
Signal between the respective central user in neighboring community will not generally interfere with each other, therefore the unicast band resource respectively used is not
It is required that it is mutually orthogonal, and the signal between the edge customer of neighboring community is easy to interfere with each other, therefore the unicast frequency respectively used
Band resource requirement is mutually orthogonal, to avoid co-channel interference.
For this purpose, in one embodiment of the invention, it can when carrying out band resource configuration for two neighboring cell
Think that the two neighboring cell distributes multicast frequency band and unicast frequency band respectively, in order to avoid co-channel interference, it is desirable that this is two neighboring
The multicast frequency band of cell is mutually orthogonal；Furthermore it is also possible to which the two neighboring respective unicast frequency band of cell is further divided into
First unicast frequency band and the second unicast frequency band, the first unicast band resource therein are assigned to only the central user of respective cell,
And the second unicast band resource then preferentially distributes to the edge customer of respective cell, but it is insufficient in the first unicast band resource
When, the central user of respective cell can also be distributed to.In view of avoiding the demand of co-channel interference between edge customer, this is adjacent
Second unicast frequency band of two cells is answered mutually orthogonal.
In the case where the multicast frequency band of two neighboring cell and mutually orthogonal the second unicast frequency band, can effectively it drop
Co-channel interference between low neighboring community.On this basis, generally not due to the signal between the central user of two neighboring cell
It can interfere with each other, therefore, in order to improve resource utilization, the central user that can permit two neighboring cell uses mutually other side
The multicast band resource of cell.In addition, this cell can also be reduced when a certain cell in neighboring community is without multicast user
Multicast band transmission power, while the second unicast frequency band by the multicast frequency band of this cell as adjacent another cell, so as to
To further increase resource utilization.
Technical solution provided by the invention can be applied to base station, former to realization of the invention with specific embodiment below
Reason is described in detail.
It is the flow chart of the downlink interference collaboration method of multicast unicast mixed service of the embodiment of the present invention referring to Fig. 1, Fig. 1,
As shown in Figure 1, this method mainly comprises the steps that
Multicast frequency band, the first unicast frequency band and the second unicast frequency band is respectively configured for two neighboring cell in step 101.
In order to avoid co-channel interference, it is desirable that the multicast frequency band of the two neighboring cell is mutually orthogonal, two school districts
Two unicast frequency bands are also mutually orthogonal.In order to improve resource utilization, which can be by the multicast frequency of other side's cell
The first unicast frequency band that band also serves as this cell uses.In this way, the central user of this cell is in addition to can be used the first unicast frequency
The resource of band carries out unicast traffic transmission, and the multicast band resource of neighboring community can also be used to carry out unicast traffic transmission.
Referring to fig. 2, Fig. 2 is the coverage map of the two neighboring cell of the embodiment of the present invention, as shown in Fig. 2, cell A
Adjacent with cell B, the coverage area of two cells, which exists, to partly overlap.
It is the band resource configuration schematic diagram of the two neighboring cell of the embodiment of the present invention referring to Fig. 3, Fig. 3, Fig. 3 is based on Fig. 2,
As shown in figure 3, frequency band A1 and frequency band A2 are respectively multicast frequency band and unicast frequency band in the band resource configuration of cell A；Cell B
Band resource configuration in, frequency band B1 and frequency band B2 are respectively unicast frequency band and multicast frequency band.Wherein, the unicast frequency band of cell A
A2 is divided into frequency band A21, frequency band A22 and frequency band A23 three parts again, and frequency band A21 is the first unicast frequency band, and frequency band A22 is
Two unicast frequency bands, frequency band A23 are the frequency bands (namely multicast frequency band of cell B) being overlapped with the multicast frequency band of cell B.Cell B's
Unicast frequency band B2 is divided into frequency band B21, frequency band B22 and frequency band B23 three parts again, and frequency band B21 is the first unicast frequency band, frequency band
B22 is the second unicast frequency band, and frequency band B23 is the frequency band (namely multicast frequency band of cell A) being overlapped with the multicast frequency band of cell A.
As can be seen that the multicast frequency band of cell A and cell B are mutually orthogonal in Fig. 3；The second of cell A and cell B is single
It is mutually orthogonal to broadcast frequency band.
In two neighboring cell, the second unicast band resource of each cell then preferentially distributes to the edge customer of the cell
It uses；The central user that the band resource of first unicast frequency band is assigned to only the cell uses, only when the first unicast frequency band provides
When the deficiency of source, just consider the second unicast band resource of distribution to the central user of the cell；And the multicast with adjacent another cell
The frequency band (the frequency band B23 in the frequency band A23 in such as cell A, cell B) that frequency band is overlapped can be used as this under any circumstance
First unicast frequency band of cell when only the multicast frequency band of another cell is without multicast user, just may be used as the of this cell
Two unicast frequency bands.
Step 102, when the first community in the two neighboring cell be not present multicast user when, reduce the group of first community
Band transmission power is broadcast, and notifies the second community in the two neighboring cell that the multicast frequency band in first community is used as second
Second unicast frequency band of cell.
When notifying the second community in the two neighboring cell that multicast frequency band in first community is used as second community
After second unicast frequency band, second community by the multicast frequency band in first community simultaneously be used as second community the first unicast frequency band and
The multicast band resource of first community can be used in the central user and edge customer of second unicast frequency band namely second community
Carry out unicast traffic transmission.
It in embodiments of the present invention,, can be with when multicast user is not present in first community in order to more make full use of resource
The multicast band transmission power of first community is reduced, and notifies second community, specifically notifying second community by first community
Multicast frequency band be used as second community the second unicast frequency band namely second community can be this cell inward flange user unicast
The multicast band resource of traffic assignments first community carries out unicast traffic transmission.For example, when multicast user being not present in cell A,
The multicast band transmission power of cell A, and notifying cell B can be reduced, thus cell B can by the multicast frequency band A1 of cell A (
That is the frequency band B23 of cell B) it is used as the second unicast frequency band of cell B, in this way, cell B can be for edge customer unicast service point
The band resource (namely band resource of the frequency band B23 of cell B) of multicast frequency band A1 with cell A.
In the embodiment of the present invention shown in Fig. 1, it may further comprise: when the multicast user of first community is from there is no become
In the presence of, the multicast band transmission power of first community can be improved, and second community is notified to stop the group in first community
The second unicast frequency band that frequency band is used as second community is broadcast, at this time and later, second community will multicast frequency band in first community
The first unicast frequency band as second community.
It is first community that A cell, which is assumed below, and B cell is second community, then can be realized with flow chart shown in Fig. 4 to A
The dynamic of the multicast band transmission power of cell adjusts, as shown in figure 4, detailed process the following steps are included:
Multicast user's variation thens follow the steps if multicast user is not present in A cell in step 401, detection A cell
402, if the multicast user of the multicast user of A cell thens follow the steps 403, otherwise, does not then execute any behaviour from without becoming having
Make.
There are two types of situations to cause A cell there is no multicast user: multicast user and A cell is originally not present in A cell
Multicast user, which discharges or switch out A cell, causes its multicast user to become without (being not present) from having and (exist).And work as in A cell not
There are when multicast user, if there is multicast user accesses or switches in A cell, then the multicast user of A cell can become having from nothing.
Step 402, the multicast band transmission power for reducing A cell, notice B cell are small as B by the multicast frequency band of A cell
The second unicast frequency band in area.
Multicast frequency band, that is, frequency band A1 of A cell, is equivalent to frequency band B23 in B cell.
Step 403, the multicast band transmission power for improving A cell, notice B cell stop using on the multicast frequency band of A cell
Make the second unicast frequency band of B cell.
The unicast band resource distribution of cell needs to follow certain distribution principle, specifically, for the side of a cell
For edge user, the priority orders of unicast band resource distribution are as follows: the second unicast frequency band of this cell, neighboring community multicast
Frequency band；For the central user of a cell, the priority orders of unicast band resource distribution are as follows: the first of this cell is single
Broadcast frequency band, the multicast frequency band of neighboring community, this cell the second unicast frequency band.
Specifically, the dynamic allocation to the unicast band resource of B cell can be realized with flow chart shown in Fig. 5, such as Fig. 5 institute
Show, detailed process the following steps are included:
Step 501 knows that any terminal of B cell needs to carry out unicast traffic transmission.
The method for knowing whether a certain terminal of B cell needs to carry out unicast traffic transmission is the prior art, is repeated no more.
Step 502 judges whether the terminal user is edge customer, is to then follow the steps 503, otherwise, executes step
505。
Terminal user understands periodical reporting measurement reports, carries in measurement report for judging that terminal user is edge customer
Or the information of central user, such as signal strength, such as these information can determine whether terminal user is edge customer.
Step 503, the terminal user are edge customers, and the second unicast band resource of distribution B cell gives the terminal user.
If the second unicast band resource of step 504, B cell is not able to satisfy the resource requirement of terminal user, small in B
In the case that multicast frequency band in A cell is used as the second unicast frequency band of B cell by area, the multicast band resource of A cell is distributed
The terminal user is given, process is terminated.
Step 505, the terminal user are central users, and the first unicast band resource of distribution B cell gives the terminal user.
If the first unicast band resource of step 506, B cell is not able to satisfy the resource requirement of the terminal user, divide
Multicast band resource with A cell gives the terminal user, if not being able to satisfy the resource requirement of the terminal user still, reallocate B
Second unicast band resource of cell gives the terminal user.
In the embodiment of the present invention shown in Fig. 5, if the terminal user is the edge customer of B cell, it is being assigned to frequency
After band resource, unicast service uses high power transmission.If terminal user is the central user of B cell, it is being assigned to frequency band
After resource, unicast service uses low power transmissions.
The downlink interference collaboration method of above comparison multicast of the embodiment of the present invention unicast mixed service is described in detail,
The present invention also provides a kind of downlink interference collaboration devices of multicast unicast mixed service, are described in detail below with reference to Fig. 6.
It is the structural representation of the downlink interference collaboration device of multicast unicast mixed service of the embodiment of the present invention referring to Fig. 6, Fig. 6
Figure, as shown in fig. 6, the device includes: configuration unit 601, coordination unit 602；Wherein,
Configuration unit 601, for multicast frequency band, the first unicast frequency band and the second unicast to be respectively configured for two neighboring cell
Frequency band；Wherein, the multicast frequency band of the two neighboring cell is mutually orthogonal, the second unicast frequency band is mutually orthogonal, and this is two neighboring
The multicast frequency band of other side's cell is also served as the first unicast frequency band of this cell by cell；
Coordination unit 602, for reducing by first when multicast user is not present in the first community in the two neighboring cell
The multicast band transmission power of cell, and notify second community in the two neighboring cell by the multicast frequency band in first community
The second unicast frequency band as second community.
In Fig. 6 shown device,
The coordination unit 602, is further used for: when the multicast user of first community is from there is no in the presence of becoming, mentioning
The multicast band transmission power of high first community, and second community is notified to stop the multicast frequency band in first community being used as second
Second unicast frequency band of cell.
Fig. 6 shown device further includes allocation unit 603；
The allocation unit when any terminal for knowing in second community needs to carry out unicast traffic transmission, executes
It operates below:
Judge the terminal user whether be second community edge customer；
If the terminal user is the edge customer of second community, distribute the second unicast band resource of second community to
The terminal user, if the second unicast band resource of second community is insufficient, in second community by the multicast frequency in first community
In the case that band is used as the second unicast frequency band of second community, the multicast band resource of first community is distributed to the terminal user；
If the terminal user is the central user of second community, distribute the first unicast band resource of second community to
The terminal user distributes the multicast band resource of first community to this if the first unicast band resource of second community is insufficient
Terminal user, when the multicast band resource of first community is still insufficient, the second unicast band resource of reallocation second community is given
The terminal user.
Fig. 6 shown device further includes acquiring unit 604；
The acquiring unit 604, the measurement report periodically reported for obtaining any terminal；
The allocation unit 603 is used for: when judging whether the terminal user is the edge customer of second community according to this
In the measurement report that terminal periodic reports the signal strength of the terminal determine the terminal user whether be second community edge
User.
In Fig. 6 shown device,
When the terminal user is the edge customer of second community, after being assigned to band resource, unicast service uses high power
Transmitting；
When the terminal user is the central user of second community, after being assigned to band resource, unicast service uses low-power
Transmitting.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent substitution, improvement and etc. done be should be included within the scope of the present invention.
Claims (10)
1. a kind of downlink interference collaboration method of multicast unicast mixed service, which is characterized in that this method comprises:
Multicast frequency band, the first unicast frequency band and the second unicast frequency band is respectively configured for two neighboring cell；Wherein, this is two neighboring
The multicast frequency band of cell is mutually orthogonal, the second unicast frequency band is mutually orthogonal, and the two neighboring cell is by the multicast of other side's cell
Frequency band also serves as the first unicast frequency band of this cell；
When multicast user is not present in the first community in the two neighboring cell, the multicast band transmission function of first community is reduced
Rate, and notify the second community in the two neighboring cell that the multicast frequency band in first community is used as to the second list of second community
Broadcast frequency band.
2. the method according to claim 1, wherein this method further comprises:
When the multicast user of first community is from there is no in the presence of becoming, the multicast band transmission power of first community is improved, and
Second community is notified to stop the second unicast frequency band that the multicast frequency band in first community is used as to second community.
3. method according to claim 1 or 2, which is characterized in that
When knowing that any terminal in second community needs to carry out unicast traffic transmission, following operation is executed:
Judge the terminal user whether be second community edge customer；
If the terminal user is the edge customer of second community, the second unicast band resource of second community is distributed to the end
End subscriber uses the multicast frequency band in first community in second community if the second unicast band resource of second community is insufficient
In the case where the second unicast frequency band for making second community, the multicast band resource of first community is distributed to the terminal user；
If the terminal user is the central user of second community, the first unicast band resource of second community is distributed to the end
End subscriber distributes the multicast band resource of first community to the terminal if the first unicast band resource of second community is insufficient
User distributes the second unicast band resource of second community to the terminal when the multicast band resource of first community is still insufficient
User.
4. according to the method described in claim 3, it is characterized in that,
Judge the terminal user whether be second community edge customer method are as follows: the measurement reported according to the terminal periodic
In report the signal strength of the terminal determine the terminal user whether be second community edge customer.
5. according to the method described in claim 3, it is characterized in that,
When the terminal user is the edge customer of second community, after being assigned to band resource, unicast service uses high power transmission；
When the terminal user is the central user of second community, after being assigned to band resource, unicast service uses low power transmissions.
6. a kind of downlink interference collaboration device of multicast unicast mixed service, which is characterized in that the device include: configuration unit,
Coordination unit；
The configuration unit, for multicast frequency band, the first unicast frequency band, the second unicast frequency to be respectively configured for two neighboring cell
Band；Wherein, the multicast frequency band of the two neighboring cell is mutually orthogonal, the second unicast frequency band is mutually orthogonal, and this is two neighboring small
The multicast frequency band of other side's cell is also served as the first unicast frequency band of this cell by area；
The coordination unit, for it is small to reduce by first when multicast user is not present in the first community in the two neighboring cell
The multicast band transmission power in area, and the second community in the two neighboring cell is notified to use the multicast frequency band in first community
Make the second unicast frequency band of second community.
7. device according to claim 6, which is characterized in that
The coordination unit, is further used for: when the multicast user of first community is from there is no in the presence of becoming, raising first is small
The multicast band transmission power in area, and second community is notified to stop the multicast frequency band in first community being used as the of second community
Two unicast frequency bands.
8. device according to claim 6 or 7, which is characterized in that the device further includes allocation unit；
The allocation unit when any terminal for knowing in second community needs to carry out unicast traffic transmission, executes following
Operation:
Judge the terminal user whether be second community edge customer；
If the terminal user is the edge customer of second community, the second unicast band resource of second community is distributed to the end
End subscriber uses the multicast frequency band in first community in second community if the second unicast band resource of second community is insufficient
In the case where the second unicast frequency band for making second community, the multicast band resource of first community is distributed to the terminal user；
If the terminal user is the central user of second community, the first unicast band resource of second community is distributed to the end
End subscriber distributes the multicast band resource of first community to the end if the low-power unicast band resource of second community is insufficient
End subscriber, when the multicast band resource of first community is still insufficient, the second unicast band resource of reallocation second community is given should
Terminal user.
9. device according to claim 8, which is characterized in that the device further includes acquiring unit；
The acquiring unit, the measurement report periodically reported for obtaining any terminal；
The allocation unit is used for when judging whether the terminal user is the edge customer of second community: according to the terminal periodic
In the measurement report that property reports the signal strength of the terminal determine the terminal user whether be second community edge customer.
10. device according to claim 8, which is characterized in that
When the terminal user is the edge customer of second community, after being assigned to band resource, unicast service uses high power transmission；
When the terminal user is the central user of second community, after being assigned to band resource, unicast service uses low power transmissions.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710406906.7A CN108990066B (en) | 2017-06-02 | 2017-06-02 | Downlink interference coordination method and device for multicast and unicast mixed service |
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