CN108990066B - Downlink interference coordination method and device for multicast and unicast mixed service - Google Patents
Downlink interference coordination method and device for multicast and unicast mixed service Download PDFInfo
- Publication number
- CN108990066B CN108990066B CN201710406906.7A CN201710406906A CN108990066B CN 108990066 B CN108990066 B CN 108990066B CN 201710406906 A CN201710406906 A CN 201710406906A CN 108990066 B CN108990066 B CN 108990066B
- Authority
- CN
- China
- Prior art keywords
- cell
- frequency band
- unicast
- multicast
- user
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Classifications
-
- 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
-
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/30—Resource management for broadcast services
-
- 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
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Quality & Reliability (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The invention provides a downlink interference coordination method and a device for multicast and unicast mixed service, and the specific method comprises the following steps: respectively configuring a multicast frequency band, a first unicast frequency band and a second unicast frequency band for two adjacent cells; the multicast frequency bands of the two adjacent cells are mutually orthogonal, the second unicast frequency bands are mutually orthogonal, and the multicast frequency bands of the two adjacent cells are also used as the first unicast frequency bands of the cell by the multicast frequency bands of the cell of the opposite side; and when the multicast user does not exist in the first cell of the two adjacent cells, reducing the multicast frequency band transmitting power of the first cell, and informing the second cell of the two adjacent cells to use the multicast frequency band in the first cell as the second unicast frequency band of the second cell. The invention can effectively reduce the same frequency interference between adjacent cells and furthest improve the resource utilization rate on the basis of ensuring the anti-interference performance.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a method and an apparatus for coordinating downlink interference of a multicast/unicast mixed service.
Background
The LTE-M (LTE-Metro) system is used as a vehicle-ground integrated wireless communication system, and the vehicle-ground communication service is comprehensively carried while the safe and reliable transmission of a train operation control system is ensured on the principle of meeting the requirements of urban rail vehicle-ground communication services in various regions. The services supported by LTE-M are as follows: train operation control system train-ground communication service, train emergency text issuing service, train operation state monitoring service, vehicle-mounted video monitoring service, PIS vehicle-mounted video service, cluster scheduling service and the like.
The PIS video service refers to that video or image information is transmitted to a car for playing through broadcasting or multicasting from the ground, and the transmission rate is 2-8 Mbit/s. The train emergency text refers to emergency text information transmitted to the vehicle-mounted PIS terminal by the ground PIS server, and the transmission rate is required to be not less than 10 kbit/s. Considering the capacity requirement of a single cell for accommodating at most 6 trains, in order to save air interface resources, the two types of services are generally transmitted by adopting a broadband Trunking Communication (B-TrunC) multicast or broadcast mode, that is, only one piece of data is sent at the air interface, and multiple trains receive the data at the same time. Other types of traffic are transmitted in a unicast manner. Therefore, in the LTE-M integrated bearer network, the multicast service and the unicast service coexist in a mixed manner, and how to perform interference coordination between adjacent cells becomes an urgent problem to be solved.
The existing interference coordination method for unicast and multicast mixed services generally divides resources into high-power RB resources and low-power RB resources, and multicast services preferentially use the high-power RB resources and use fixed power for transmission. The interference coordination method is suitable for a cellular private network with multicast data transmission priority higher than unicast data transmission priority and unfixed multicast data transmission bandwidth, but is not suitable for the characteristics of track traffic banded coverage, CBTC unicast transmission data priority higher than PIS multicast transmission data priority, PIS multicast bandwidth fixation and multicast user receiving multicast data in a connection state. Therefore, for the rail transit wireless communication integrated bearer system, a unified planning design needs to be performed according to the requirement of the multicast and unicast mixed service, and an interference coordination scheme conforming to the LTE-M integrated bearer network is made.
Disclosure of Invention
In view of the above, the present invention provides a method and an apparatus for coordinating downlink interference of a multicast and unicast mixed service conforming to an LTE-M integrated bearer network, which can effectively reduce co-channel interference between adjacent cells and maximally improve resource utilization rate on the basis of ensuring interference immunity.
In order to achieve the purpose, the invention provides the following technical scheme:
a downlink interference coordination method for multicast and unicast mixed service comprises the following steps:
respectively configuring a multicast frequency band, a first unicast frequency band and a second unicast frequency band for two adjacent cells; the multicast frequency bands of the two adjacent cells are mutually orthogonal, the second unicast frequency bands are mutually orthogonal, and the multicast frequency bands of the two adjacent cells are also used as the first unicast frequency bands of the cell by the multicast frequency bands of the cell of the opposite side;
and when the multicast user does not exist in the first cell of the two adjacent cells, reducing the multicast frequency band transmitting power of the first cell, and informing the second cell of the two adjacent cells to use the multicast frequency band in the first cell as the second unicast frequency band of the second cell.
A downlink interference coordination device for multicast and unicast mixed service comprises: a configuration unit and a coordination unit;
the configuration unit is used for respectively configuring a multicast frequency band, a first unicast frequency band and a second unicast frequency band for two adjacent cells; the multicast frequency bands of the two adjacent cells are mutually orthogonal, the second unicast frequency bands are mutually orthogonal, and the multicast frequency bands of the two adjacent cells are also used as the first unicast frequency bands of the cell by the multicast frequency bands of the cell of the opposite side;
the coordination unit is configured to reduce the multicast frequency band transmission power of the first cell when there is no multicast user in the first cell of the two adjacent cells, and notify the second cell of the two adjacent cells to use the multicast frequency band in the first cell as the second unicast frequency band of the second cell.
According to the technical scheme, the multicast frequency band, the first unicast frequency band and the second unicast frequency band are respectively configured for two adjacent cells, and the multicast frequency bands of the two adjacent cells are ensured to be orthogonal to each other, and the second unicast frequency bands are ensured to be orthogonal to each other; the co-channel interference between adjacent cells can be effectively reduced; allowing the two adjacent cells to use the multicast frequency band of the opposite side as the first unicast frequency band of the cell; when no multicast user exists in any one of the two adjacent cells, the multicast frequency band of the cell can be simultaneously used as a second unicast frequency band of the other adjacent cell by reducing the multicast frequency band transmitting power of the cell, so that the resource utilization rate can be improved to the maximum extent on the basis of ensuring the anti-interference performance.
Drawings
Fig. 1 is a flowchart of a downlink interference coordination method for multicast-unicast mixed service according to an embodiment of the present invention;
fig. 2 is a schematic diagram of coverage areas of two adjacent cells according to an embodiment of the present invention;
fig. 3 is a schematic diagram of frequency band resource allocation of two adjacent cells according to an embodiment of the present invention;
FIG. 4 is a flowchart of dynamic adjustment of the multicast band transmit power of a cell according to an embodiment of the present invention;
FIG. 5 is a flow chart of dynamic allocation of unicast band resources for cell B according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a downlink interference coordination apparatus for multicast/unicast mixed service according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention are described in detail below with reference to the accompanying drawings according to embodiments.
In a wireless communication system, end users in a cell are divided into center users and edge users. The signal of the central user is not easily interfered by the signal of the user in the adjacent cell, so that low-power transmission can be adopted when the service is transmitted. The signals of the edge users are easily interfered by the signals of the users of the adjacent cells, so that high-power transmission can be adopted.
In the invention, based on the characteristics of the communication bearer service of the rail transit vehicles, a multicast frequency band and a unicast frequency band are required to be configured for each cell. For multicast services, since a plurality of cells may belong to the same group by using the B-TrunC technique, multicast bands between adjacent cells need to be orthogonal to each other in order to avoid co-channel interference. For unicast service, signals between respective central users of adjacent cells generally do not interfere with each other, so that unicast band resources used by the respective central users are not required to be orthogonal to each other, and signals between edge users of the adjacent cells easily interfere with each other, so that the unicast band resources used by the respective central users are required to be orthogonal to each other, thereby avoiding co-channel interference.
Therefore, in an embodiment of the present invention, for two adjacent cells, when performing frequency band resource allocation, a multicast frequency band and a unicast frequency band may be respectively allocated to the two adjacent cells, and in order to avoid co-channel interference, the multicast frequency bands of the two adjacent cells are required to be orthogonal to each other; in addition, the unicast frequency bands of the two adjacent cells can be further divided into a first unicast frequency band and a second unicast frequency band, wherein the first unicast frequency band resource is only allocated to the central user of the corresponding cell, and the second unicast frequency band resource is preferentially allocated to the edge user of the corresponding cell. The second unicast bands of the two adjacent cells should be orthogonal to each other in consideration of the need to avoid co-channel interference between edge users.
Under the condition that the multicast frequency band and the second unicast frequency band of two adjacent cells are orthogonal, the co-channel interference between the adjacent cells can be effectively reduced. On this basis, since signals between the central users of two adjacent cells generally do not interfere with each other, the central users of two adjacent cells may be allowed to use multicast band resources of the other cell with each other in order to improve resource utilization. In addition, when there is no multicast user in a certain cell in the adjacent cell, the multicast frequency band transmitting power of the cell can be reduced, and the multicast frequency band of the cell is used as the second unicast frequency band of another adjacent cell, so that the resource utilization rate can be further improved.
The technical solution provided by the present invention can be applied to a base station, and the following detailed description will explain the implementation principle of the present invention by using a specific embodiment.
Referring to fig. 1, fig. 1 is a flowchart of a downlink interference coordination method for multicast-unicast mixed service according to an embodiment of the present invention, and as shown in fig. 1, the method mainly includes the following steps:
In order to avoid co-channel interference, the multicast frequency bands of the two adjacent cells are required to be orthogonal to each other, and the second unicast frequency bands of the two calibration regions are also required to be orthogonal to each other. In order to improve resource utilization, the two neighboring cells may use the multicast frequency band of the opposite cell as the first unicast frequency band of the cell. Thus, the central user of the local cell can use the resource of the first unicast frequency band for unicast service transmission, and can also use the resource of the multicast frequency band of the adjacent cell for unicast service transmission.
Referring to fig. 2, fig. 2 is a schematic diagram of coverage areas of two adjacent cells according to an embodiment of the present invention, as shown in fig. 2, a cell a and a cell B are adjacent, and coverage areas of the two cells partially overlap.
Referring to fig. 3, fig. 3 is a schematic diagram of frequency band resource configurations of two adjacent cells according to an embodiment of the present invention, and based on fig. 2 in fig. 3, in the frequency band resource configuration of cell a, a frequency band a1 and a frequency band a2 are a multicast frequency band and a unicast frequency band, respectively; in the band resource configuration of cell B, band B1 and band B2 are unicast band and multicast band, respectively. Here, the unicast band a2 of the cell a is further divided into three parts, i.e., a band a21, a band a22 and a band a23, the band a21 is a first unicast band, the band a22 is a second unicast band, and the band a23 is a band overlapping with the multicast band of the cell B (i.e., the multicast band of the cell B). The unicast band B2 of cell B is further divided into three parts, band B21, band B22 and band B23, band B21 is the first unicast band, band B22 is the second unicast band, and band B23 is the band that overlaps with the multicast band of cell a (i.e., the multicast band of cell a).
It can be seen that in fig. 3, the multicast frequency bands of cell a and cell B are orthogonal to each other; the second unicast bands for cell a and cell B are orthogonal to each other.
In two adjacent cells, the second unicast frequency band resource of each cell is preferentially allocated to the edge user of the cell for use; the frequency band resource of the first unicast frequency band is only allocated to the central user of the cell for use, and only when the first unicast frequency band resource is insufficient, the allocation of the second unicast frequency band resource to the central user of the cell is considered; while the frequency bands (e.g., frequency band a23 in cell a and frequency band B23 in cell B) that coincide with the multicast frequency band of another adjacent cell may be used as the first unicast frequency band of the own cell in any case, and only when there is no multicast user in the multicast frequency band of the other cell, the second unicast frequency band of the own cell may be used.
And 102, when no multicast user exists in a first cell of the two adjacent cells, reducing the multicast frequency band transmitting power of the first cell, and informing a second cell of the two adjacent cells to use the multicast frequency band in the first cell as a second unicast frequency band of the second cell.
When the second cell of the two adjacent cells is notified to use the multicast frequency band in the first cell as the second unicast frequency band of the second cell, the second cell simultaneously uses the multicast frequency band in the first cell as the first unicast frequency band and the second unicast frequency band of the second cell, that is, both the center user and the edge user of the second cell can use the multicast frequency band resource of the first cell for unicast service transmission.
In the embodiment of the present invention, in order to utilize resources more fully, when there is no multicast user in the first cell, the multicast frequency band transmission power of the first cell may be reduced, and the second cell is notified, specifically, the second cell is notified to use the multicast frequency band of the first cell as the second unicast frequency band of the second cell, that is, the second cell may allocate the multicast frequency band resource of the first cell for unicast service of edge users in the cell to perform unicast service transmission. For example, when there is no multicast user in cell a, the multicast frequency band transmission power of cell a may be reduced, and cell B may be notified, so that cell B may use multicast frequency band a1 of cell a (i.e. frequency band B23 of cell B) as the second unicast frequency band of cell B, and thus, cell B may allocate the frequency band resource of multicast frequency band a1 of cell a (i.e. frequency band resource of frequency band B23 of cell B) for the unicast traffic of the edge user.
In the embodiment of the present invention shown in fig. 1, the method further includes: when the multicast user of the first cell changes from absent to present, the multicast frequency band transmission power of the first cell may be increased, and the second cell is notified to stop using the multicast frequency band in the first cell as the second unicast frequency band of the second cell, and at this time and later, the second cell still uses the multicast frequency band in the first cell as the first unicast frequency band of the second cell.
In the following, assuming that the cell a is a first cell and the cell B is a second cell, the dynamic adjustment of the multicast band transmission power of the cell a may be implemented by using the flowchart shown in fig. 4, as shown in fig. 4, the specific process includes the following steps:
There are two cases that result in the absence of multicast users in cell a: there is no multicast user in cell a and the release or handover of a multicast user in cell a out of cell a causes its multicast user to change from present (presence) to absent (absence). And when the multicast user does not exist in the cell A, if the multicast user accesses or is switched into the cell A, the multicast user of the cell A is changed from non-existence to existence.
The multicast band of the a cell, i.e., the band a1, corresponds to the band B23 in the B cell.
And step 403, increasing the multicast frequency band transmitting power of the cell A, and informing the cell B to stop using the multicast frequency band of the cell A as the second unicast frequency band of the cell B.
The unicast frequency band resource allocation of the cell needs to follow a certain allocation principle, specifically, for an edge user of a cell, the priority order of the unicast frequency band resource allocation is: a second unicast frequency band of the cell and a multicast frequency band of an adjacent cell; for the central users of a cell, the priority order of unicast band resource allocation is: the first unicast frequency band of the local cell, the multicast frequency band of the adjacent cell and the second unicast frequency band of the local cell.
Specifically, the dynamic allocation of the unicast band resource of the B cell may be implemented by using the flowchart shown in fig. 5, and as shown in fig. 5, the specific flowchart includes the following steps:
The method for knowing whether a certain terminal in the B cell needs to perform unicast service transmission is the prior art and is not described in detail.
The end user may periodically report a measurement report, where the measurement report carries information, such as signal strength, for determining whether the end user is an edge user or a center user, and the information may determine whether the end user is an edge user.
In the embodiment of the present invention shown in fig. 5, if the end user is an edge user of a B cell, after allocating a frequency band resource, the unicast service is transmitted with high power. If the terminal user is the center user of the B cell, the unicast service adopts low-power transmission after the frequency band resource is allocated.
The above description explains in detail the downlink interference coordination method for the multicast-unicast mixed service in the embodiment of the present invention, and the present invention also provides a downlink interference coordination apparatus for the multicast-unicast mixed service, which is explained in detail below with reference to fig. 6.
Referring to fig. 6, fig. 6 is a schematic structural diagram of a downlink interference coordination apparatus for multicast-unicast hybrid service according to an embodiment of the present invention, and as shown in fig. 6, the apparatus includes: configuration section 601, coordination section 602; wherein the content of the first and second substances,
a configuration unit 601, configured to configure a multicast frequency band, a first unicast frequency band, and a second unicast frequency band for two adjacent cells, respectively; the multicast frequency bands of the two adjacent cells are mutually orthogonal, the second unicast frequency bands are mutually orthogonal, and the multicast frequency bands of the two adjacent cells are also used as the first unicast frequency bands of the cell by the multicast frequency bands of the cell of the opposite side;
a coordinating unit 602, configured to, when there is no multicast user in a first cell of the two adjacent cells, reduce the multicast frequency band transmission power of the first cell, and notify a second cell of the two adjacent cells to use the multicast frequency band in the first cell as a second unicast frequency band of the second cell.
In the device shown in figure 6 of the drawings,
the coordinating unit 602 is further configured to: and when the multicast user of the first cell changes from absent to present, increasing the multicast frequency band transmitting power of the first cell, and informing the second cell to stop using the multicast frequency band in the first cell as the second unicast frequency band of the second cell.
The apparatus shown in fig. 6 further comprises a dispensing unit 603;
the allocation unit is configured to, when it is known that any terminal in the second cell needs to perform unicast service transmission, perform the following operations:
judging whether the terminal user is an edge user of a second cell;
if the terminal user is an edge user of the second cell, allocating a second unicast frequency band resource of the second cell to the terminal user, and if the second unicast frequency band resource of the second cell is insufficient, allocating the multicast frequency band resource of the first cell to the terminal user under the condition that the second cell uses the multicast frequency band in the first cell as the second unicast frequency band of the second cell;
if the terminal user is the central user of the second cell, the first unicast frequency band resource of the second cell is allocated to the terminal user, if the first unicast frequency band resource of the second cell is insufficient, the multicast frequency band resource of the first cell is allocated to the terminal user, and when the multicast frequency band resource of the first cell is still insufficient, the second unicast frequency band resource of the second cell is reallocated to the terminal user.
The apparatus shown in fig. 6 further comprises an obtaining unit 604;
the acquiring unit 604 is configured to acquire a measurement report periodically reported by any terminal;
the allocating unit 603, when determining whether the end user is an edge user of the second cell, is configured to: and determining whether the terminal user is an edge user of the second cell according to the signal strength of the terminal in the measurement report periodically reported by the terminal.
In the device shown in figure 6 of the drawings,
when the terminal user is the edge user of the second cell, after the frequency band resource is allocated, the unicast service is transmitted by high power;
when the terminal user is the central user of the second cell, the unicast service is transmitted by low power after the frequency band resource is allocated.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. A downlink interference coordination method for multicast-unicast mixed service is characterized by comprising the following steps:
respectively configuring a multicast frequency band, a first unicast frequency band and a second unicast frequency band for two adjacent cells; the multicast frequency bands of the two adjacent cells are mutually orthogonal, the second unicast frequency bands are mutually orthogonal, the multicast frequency bands of the two adjacent cells also serve as the first unicast frequency bands of the cell, and the first unicast frequency band of each cell is only allocated to the central user of the cell;
and when the multicast user does not exist in the first cell of the two adjacent cells, reducing the multicast frequency band transmitting power of the first cell, and informing the second cell of the two adjacent cells to use the multicast frequency band in the first cell as the second unicast frequency band of the second cell.
2. The method of claim 1, further comprising:
and when the multicast user of the first cell changes from absent to present, increasing the multicast frequency band transmitting power of the first cell, and informing the second cell to stop using the multicast frequency band in the first cell as the second unicast frequency band of the second cell.
3. The method according to claim 1 or 2,
when any terminal in the second cell needs to perform unicast service transmission, the following operations are executed:
judging whether the terminal user is an edge user of a second cell;
if the terminal user is an edge user of the second cell, allocating a second unicast frequency band resource of the second cell to the terminal user, and if the second unicast frequency band resource of the second cell is insufficient, allocating the multicast frequency band resource of the first cell to the terminal user under the condition that the second cell uses the multicast frequency band in the first cell as the second unicast frequency band of the second cell;
if the terminal user is the central user of the second cell, allocating the first unicast frequency band resource of the second cell to the terminal user, if the first unicast frequency band resource of the second cell is insufficient, allocating the multicast frequency band resource of the first cell to the terminal user, and if the multicast frequency band resource of the first cell is still insufficient, allocating the second unicast frequency band resource of the second cell to the terminal user.
4. The method of claim 3,
the method for judging whether the terminal user is the edge user of the second cell comprises the following steps: and determining whether the terminal user is an edge user of the second cell according to the signal strength of the terminal in the measurement report periodically reported by the terminal.
5. The method of claim 3,
when the terminal user is the edge user of the second cell, after the frequency band resource is allocated, the unicast service is transmitted by high power;
when the terminal user is the central user of the second cell, the unicast service is transmitted by low power after the frequency band resource is allocated.
6. A downlink interference coordination device for multicast-unicast mixed service, the device comprising: a configuration unit and a coordination unit;
the configuration unit is used for respectively configuring a multicast frequency band, a first unicast frequency band and a second unicast frequency band for two adjacent cells; the multicast frequency bands of the two adjacent cells are mutually orthogonal, the second unicast frequency bands are mutually orthogonal, the multicast frequency bands of the two adjacent cells also serve as the first unicast frequency bands of the cell, and the first unicast frequency band of each cell is only allocated to the central user of the cell;
the coordination unit is configured to reduce the multicast frequency band transmission power of the first cell when there is no multicast user in the first cell of the two adjacent cells, and notify the second cell of the two adjacent cells to use the multicast frequency band in the first cell as the second unicast frequency band of the second cell.
7. The apparatus of claim 6,
the coordination unit is further configured to: and when the multicast user of the first cell changes from absent to present, increasing the multicast frequency band transmitting power of the first cell, and informing the second cell to stop using the multicast frequency band in the first cell as the second unicast frequency band of the second cell.
8. The device according to claim 6 or 7, characterized in that it further comprises a dispensing unit;
the allocation unit is configured to, when it is known that any terminal in the second cell needs to perform unicast service transmission, perform the following operations:
judging whether the terminal user is an edge user of a second cell;
if the terminal user is an edge user of the second cell, allocating a second unicast frequency band resource of the second cell to the terminal user, and if the second unicast frequency band resource of the second cell is insufficient, allocating the multicast frequency band resource of the first cell to the terminal user under the condition that the second cell uses the multicast frequency band in the first cell as the second unicast frequency band of the second cell;
if the terminal user is the central user of the second cell, the first unicast frequency band resource of the second cell is allocated to the terminal user, if the low-power unicast frequency band resource of the second cell is insufficient, the multicast frequency band resource of the first cell is allocated to the terminal user, and when the multicast frequency band resource of the first cell is still insufficient, the second unicast frequency band resource of the second cell is allocated to the terminal user.
9. The apparatus of claim 8, further comprising an acquisition unit;
the acquiring unit is used for acquiring a measurement report periodically reported by any terminal;
the allocating unit, when determining whether the terminal user is an edge user of the second cell, is configured to: and determining whether the terminal user is an edge user of the second cell according to the signal strength of the terminal in the measurement report periodically reported by the terminal.
10. The apparatus of claim 8,
when the terminal user is the edge user of the second cell, after the frequency band resource is allocated, the unicast service is transmitted by high power;
when the terminal user is the central user of the second cell, the unicast service is transmitted by low power after the frequency band resource is allocated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710406906.7A CN108990066B (en) | 2017-06-02 | 2017-06-02 | Downlink interference coordination method and device for multicast and unicast mixed service |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710406906.7A CN108990066B (en) | 2017-06-02 | 2017-06-02 | Downlink interference coordination method and device for multicast and unicast mixed service |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108990066A CN108990066A (en) | 2018-12-11 |
| CN108990066B true CN108990066B (en) | 2022-01-28 |
Family
ID=64501132
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710406906.7A Expired - Fee Related CN108990066B (en) | 2017-06-02 | 2017-06-02 | Downlink interference coordination method and device for multicast and unicast mixed service |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108990066B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111447571B (en) * | 2020-04-03 | 2021-08-13 | 北京运安智维科技有限公司 | PIS service data transmission method and system of rail transit train-ground wireless communication system |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101371543A (en) * | 2005-09-30 | 2009-02-18 | Lg电子株式会社 | A method for transmitting and receiving data using a plurality of carriers |
| CN101388704A (en) * | 2008-10-16 | 2009-03-18 | 北京创毅视讯科技有限公司 | Transmission method and mobile communication system when overlapping uni-cast and multi-cast services |
| CN101820584A (en) * | 2009-02-27 | 2010-09-01 | 中兴通讯股份有限公司 | Method and device for dividing and mapping resources |
| CN102273245A (en) * | 2009-08-28 | 2011-12-07 | Lg电子株式会社 | Method for allocating resource for multicast and/or broadcast service data in wireless communication system and an apparatus therefor |
| US8175021B2 (en) * | 2005-11-04 | 2012-05-08 | Texas Instruments Incorporated | Method for transmission of unicast control in broadcast/multicast transmission time intervals |
| CN103181201A (en) * | 2010-07-23 | 2013-06-26 | Scaipla控股股份有限公司 | Cellular communication system, communication units, and method for broadcast and unicast communication |
| CN104378763A (en) * | 2013-08-12 | 2015-02-25 | 普天信息技术有限公司 | Interference coordination method and base station |
| CN105577844A (en) * | 2014-11-06 | 2016-05-11 | 普天信息技术有限公司 | Method for generating multicast user plane address, core network device and terminal |
| CN105682049A (en) * | 2014-11-19 | 2016-06-15 | 普天信息技术有限公司 | Method and device for lowering interference in multimedia broadcast multicast service (MBMS) |
-
2017
- 2017-06-02 CN CN201710406906.7A patent/CN108990066B/en not_active Expired - Fee Related
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101371543A (en) * | 2005-09-30 | 2009-02-18 | Lg电子株式会社 | A method for transmitting and receiving data using a plurality of carriers |
| US8175021B2 (en) * | 2005-11-04 | 2012-05-08 | Texas Instruments Incorporated | Method for transmission of unicast control in broadcast/multicast transmission time intervals |
| CN101388704A (en) * | 2008-10-16 | 2009-03-18 | 北京创毅视讯科技有限公司 | Transmission method and mobile communication system when overlapping uni-cast and multi-cast services |
| CN101820584A (en) * | 2009-02-27 | 2010-09-01 | 中兴通讯股份有限公司 | Method and device for dividing and mapping resources |
| CN102273245A (en) * | 2009-08-28 | 2011-12-07 | Lg电子株式会社 | Method for allocating resource for multicast and/or broadcast service data in wireless communication system and an apparatus therefor |
| CN103181201A (en) * | 2010-07-23 | 2013-06-26 | Scaipla控股股份有限公司 | Cellular communication system, communication units, and method for broadcast and unicast communication |
| CN104378763A (en) * | 2013-08-12 | 2015-02-25 | 普天信息技术有限公司 | Interference coordination method and base station |
| CN105577844A (en) * | 2014-11-06 | 2016-05-11 | 普天信息技术有限公司 | Method for generating multicast user plane address, core network device and terminal |
| CN105682049A (en) * | 2014-11-19 | 2016-06-15 | 普天信息技术有限公司 | Method and device for lowering interference in multimedia broadcast multicast service (MBMS) |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108990066A (en) | 2018-12-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104994583B (en) | Multi-channel MAC protocols method based on cluster mechanism in vehicular ad hoc network | |
| KR101682034B1 (en) | Apparatus and method for using secondary frequency assignment optionnally in a wireless communication system using multiple band | |
| US8345587B2 (en) | Relay station, base station and method for extending a coverage area of a base station in a radio network | |
| JP2022532226A (en) | Methods and equipment for scheduling multiple resources in NR V2X | |
| US8804643B2 (en) | Method for enabling multi-channel signaling in a communication network | |
| US9137671B2 (en) | Synchronisation method between base stations, radio communication system and base station thereof | |
| WO2017091980A1 (en) | Radio resource scheduling method, device and system | |
| JP2023515093A (en) | Method and apparatus for allocating resources through cooperation between terminals in V2X system | |
| US20170142730A1 (en) | Apparatus and method for transmitting data in wireless network | |
| CN109151844B (en) | Method, terminal and system for communication between terminals | |
| KR102602266B1 (en) | Method and device for transmitting and receiving PSFCH in a wireless communication system | |
| WO2021098101A1 (en) | Method and device for power-saving in wireless sidelink communication | |
| US20200374862A1 (en) | Service transmission method and apparatus | |
| CN110859005A (en) | Communication method and related equipment | |
| TWI825174B (en) | Communication devices, control devices and communication systems | |
| CA3171565A1 (en) | Method and device for power-saving in wireless sidelink communication | |
| WO2018058375A1 (en) | Communication method and terminal | |
| JP2006352191A (en) | Radio communication method, control station and mobile station | |
| CN109922525B (en) | Communication-based CBTC (communication based train control) service scheduling method and device | |
| WO2020168900A1 (en) | Scheduling method for sidelink communication, terminal device, and network device | |
| CN115589596A (en) | Method and device for sidelight communication | |
| CN108777875B (en) | Service processing method and device | |
| CN108990066B (en) | Downlink interference coordination method and device for multicast and unicast mixed service | |
| WO2019113774A1 (en) | Method and apparatus for data transmission | |
| CN108307467B (en) | Communication method, base station and terminal |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220128 |