CN108093477B - Method and device for allocating downlink resources in cluster voice system - Google Patents
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Abstract
The invention provides a method and a device for allocating downlink resources in a cluster voice system, and belongs to the technical field of communication. The method for allocating the downlink resources in the cluster voice system comprises the following steps: determining allocable subframe resources in a preset period; allocating starting subframe resources for the M physical cells according to the allocable subframe resources and the physical cell identifiers of the M physical cells; and the absolute value of the difference between the numbers of the subframe resources of the two physical cells corresponding to the different physical cell identifiers is smaller than a first threshold value. The method and the device for allocating downlink resources in the cluster voice system improve the flexibility of subframe resource allocation in the cluster voice system.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a method and an apparatus for allocating downlink resources in a trunking voice system.
Background
In the existing trunking voice system, a semi-persistent scheduling manner is usually adopted to allocate resources to each physical cell in the trunking voice system.
In the process of allocating resources for each physical cell in the cluster voice system by adopting a semi-static scheduling mode, the method is characterized in that the scheduling is carried out only when the resources are allocated for the first time. The method specifically comprises the following steps: and in the following preset period, starting subframe resources can be continuously allocated to the physical cell according to the starting subframe resource allocation mode in the first preset period without the indication of a scheduling signaling.
However, the semi-persistent scheduling method makes the flexibility of subframe resource allocation in the cluster speech system not high.
Disclosure of Invention
The invention provides a method and a device for allocating downlink resources in a cluster voice system, which are used for improving the flexibility of subframe resource allocation in the cluster voice system.
The embodiment of the invention provides a method for allocating downlink resources in a trunking voice system, which is applied to the trunking voice system and comprises M physical cells, wherein the load of each physical cell in the M physical cells is less than a preset threshold, M is an integer greater than or equal to 2, and the method comprises the following steps:
determining allocable subframe resources in a preset period;
allocating starting subframe resources for the M physical cells according to the allocable subframe resources and the physical cell identifiers of the M physical cells; and the absolute value of the difference between the numbers of the subframe resources of the two physical cells corresponding to the different physical cell identifiers is smaller than a first threshold value.
In an embodiment of the present invention, the determining the allocable subframe resources in the preset period includes:
acquiring subframe ratio configuration;
and determining allocable subframe resources in a preset period according to the subframe ratio configuration.
In an embodiment of the present invention, before allocating starting subframe resources for the M physical cells according to the allocable subframe resources and the physical cell identifiers of the M physical cells, the method further includes:
and acquiring the physical cell identifiers of the M physical cells.
In an embodiment of the present invention, the acquiring the physical cell identifiers of the M physical cells includes:
processing the cell identifiers of the M physical cells to obtain a processing result; the treatment is modulo N treatment, wherein N is an integer which is more than or equal to 2 and less than or equal to M;
and acquiring the physical cell identifiers of the M physical cells according to the processing result.
The embodiment of the present invention further provides a device for allocating downlink resources in a trunking voice system, which is applied to a trunking voice system including M physical cells, where a load of each physical cell in the M physical cells is less than a preset threshold, and M is an integer greater than or equal to 2, and includes:
the determining module is used for determining allocable subframe resources in a preset period;
an allocation module, configured to allocate starting subframe resources for the M physical cells according to the allocable subframe resources and the physical cell identifiers of the M physical cells; and the absolute value of the difference between the numbers of the subframe resources of the two physical cells corresponding to the different physical cell identifiers is smaller than a first threshold value.
In an embodiment of the present invention, the determining module is specifically configured to obtain a subframe proportioning configuration; and determining allocable subframe resources in a preset period according to the subframe ratio configuration.
In an embodiment of the present invention, the method further includes: an obtaining module, configured to obtain the physical cell identifiers of the M physical cells.
In an embodiment of the present invention, the obtaining module is specifically configured to process the cell identifiers of the M physical cells to obtain a processing result; the treatment is modulo N treatment, wherein N is an integer which is more than or equal to 2 and less than or equal to M; and acquiring the physical cell identifiers of the M physical cells according to the processing result.
The method and the device for allocating the downlink resources in the cluster voice system provided by the embodiment of the invention determine the allocable subframe resources in a preset period; allocating initial subframe resources for the M physical cells according to the allocable subframe resources and the physical cell identifiers of the M physical cells; the absolute value of the difference between the numbers of the subframe resources of the two physical cells corresponding to different physical cell identifiers is smaller than a first threshold value. Therefore, in the method for allocating downlink resources in a trunking voice system provided in the embodiment of the present invention, allocable subframe resources are allocated at intervals, and an absolute value of a difference between numbers of subframe resources allocated to two physical cells corresponding to different physical cell identifiers is smaller than a preset threshold, so that interference between the physical cells is reduced, and meanwhile, fairness of subframe resources allocated to each physical cell is ensured, thereby implementing dynamic allocation of subframe resources of the trunking voice system, and improving flexibility of subframe resource allocation in the trunking voice system.
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In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic flowchart of a method for allocating downlink resources in a trunking voice system according to an embodiment of the present invention;
fig. 2 is a schematic flowchart of another method for allocating downlink resources in a cluster voice system according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of an apparatus for allocating downlink resources in a trunking voice system according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of another apparatus for allocating downlink resources in a cluster voice system according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The terms "first," "second," "third," "fourth," and the like in the description and in the claims, as well as in the drawings, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
In the prior art, subframe resources are allocated to each physical cell in a cluster voice system in a semi-static scheduling manner, so that the flexibility of subframe resource allocation in the cluster voice system is not high. The method for allocating downlink resources in a trunking voice system provided in the embodiments of the present invention allocates starting subframe resources for M physical cells dynamically according to the allocatable subframe resources and physical cell identifiers of the M physical cells by determining allocatable subframe resources in advance, and allocates the allocatable subframe resources at intervals, and an absolute value of a difference between numbers of subframe resources allocated to two physical cells corresponding to different physical cell identifiers is smaller than a preset threshold, so that while reducing interference between the physical cells, fairness of subframe resources allocated to each physical cell is ensured, thereby implementing dynamic allocation of subframe resources of the trunking voice system, and improving flexibility of subframe resource allocation in the trunking voice system. Hereinafter, the technical means of the present application will be described in detail by way of specific examples.
It should be noted that the following specific embodiments may be combined with each other, and the same or similar concepts or processes may not be described in detail in some embodiments.
Fig. 1 is a schematic flowchart of a method for allocating downlink resources in a trunking voice system according to an embodiment of the present invention, where the method for allocating downlink resources in the trunking voice system can be executed by a device for allocating downlink resources in the trunking voice system, and the method for allocating downlink resources in the trunking voice system is applied to a trunking voice system including M physical cells, where a load of each physical cell in the M physical cells is less than a preset threshold, and M is an integer greater than or equal to 2. The preset threshold may be set according to actual needs, and the present invention is not limited further herein. Referring to fig. 1, the method for allocating downlink resources in the clustered voice system may include:
s101, determining allocable subframe resources in a preset period.
The preset period is 20 milliseconds consistent with the voice packet period, and may be specifically set according to actual needs, where the embodiment of the present invention is not further limited.
For example, in the embodiment of the present invention, taking a preset period as 20 milliseconds and a subframe ratio of 0 in a TDD system as an example, the allocable downlink subframe resources in the preset period are determined as follows: subframe No. 0, subframe No. 1, subframe No. 5, subframe No. 6, subframe No. 10, subframe No. 11, subframe No. 15, and subframe No. 16. After determining the allocable subframe resources, the subframe resources may be allocated to the M physical cells.
S102, allocating starting subframe resources for the M physical cells according to the allocable subframe resources and the physical cell identifications of the M physical cells.
And the absolute value of the difference between the number of the subframe resources of the two physical cells corresponding to different physical cell identifiers is smaller than a first threshold value. Optionally, the first threshold is an integer greater than or equal to 0 and less than or equal to 1. Of course, other values may be used, and the first threshold is only described as an integer greater than or equal to 0 and less than or equal to 1 in the embodiment of the present invention, and may be specifically set according to actual needs, and the embodiment of the present invention is not further limited herein.
In the practical application process, taking M as 3 as an example, that is, there are three physical cells in the trunking voice system, when allocating starting subframe resources for M physical cells according to allocable subframe resources and physical cell identifiers of the M physical cells, subframe No. 0 may be allocated to the physical cell with physical cell identifier 0 to serve as the starting subframe resource of the physical cell with physical cell identifier 0, subframe No. 5 may be allocated to the physical cell with physical cell identifier 1 to serve as the starting subframe resource of the physical cell with physical cell identifier 1, subframe No. 11 may be allocated to the physical cell with physical cell identifier 2 to serve as the starting subframe resource of the physical cell with physical cell identifier 2 to complete subframe resource allocation, and in the process of allocating subframe resources, allocable subframe resources are allocated at intervals, and the absolute value of the difference between the numbers of the sub-frame resources allocated to the two physical cells corresponding to different physical cell identifications is smaller than a preset threshold value, so that the interference between the physical cells is reduced, and simultaneously, the fairness of the sub-frame resources allocated to the physical cells is ensured, thereby realizing the dynamic allocation of the sub-frame resources of the trunking voice system, and improving the flexibility of the sub-frame resource allocation in the trunking voice system.
The method for allocating downlink resources in a cluster voice system provided by the embodiment of the invention determines allocable subframe resources in a preset period; allocating initial subframe resources for the M physical cells according to the allocable subframe resources and the physical cell identifiers of the M physical cells; the absolute value of the difference between the numbers of the subframe resources of the two physical cells corresponding to different physical cell identifiers is smaller than a first threshold value. Therefore, in the method for allocating downlink resources in a trunking voice system provided in the embodiment of the present invention, allocable subframe resources are allocated at intervals, and an absolute value of a difference between numbers of subframe resources allocated to two physical cells corresponding to different physical cell identifiers is smaller than a preset threshold, so that interference between the physical cells is reduced, and meanwhile, fairness of subframe resources allocated to each physical cell is ensured, thereby implementing dynamic allocation of subframe resources of the trunking voice system, and improving flexibility of subframe resource allocation in the trunking voice system.
Based on the embodiment corresponding to fig. 1, on the basis of the embodiment corresponding to fig. 1, please refer to fig. 2, where fig. 2 is a schematic flowchart of another method for allocating downlink resources in a clustered voice system according to an embodiment of the present invention, where the method for allocating downlink resources in a clustered voice system may include:
s201, acquiring physical cell identifiers of M physical cells.
Optionally, in this embodiment of the present invention, the obtaining, by S201, the physical cell identifiers of the M physical cells may be implemented in the following possible manners:
processing the cell identifiers of the M physical cells to obtain a processing result; and acquiring the physical cell identifications of the M physical cells according to the processing result.
Wherein, the processing is modulo N processing, and N is an integer which is more than or equal to 2 and less than or equal to M. For example, in the embodiment of the present invention, N is 3 or 6, that is, modulo-3 processing or modulo-6 processing is performed on cell identifiers of M physical cells, and a result of the modulo-3 processing or the modulo-6 processing is used as a physical cell identifier of the physical cell.
S202, obtaining subframe ratio configuration.
It should be noted that there is no sequence between S201 and S202, and S201 may be executed first, and then S202 may be executed; or executing S202 first and then executing S201; of course, S201 and S202 may also be executed simultaneously, and the embodiment of the present invention is only described by taking the example of executing S201 first and then executing S202, but the present invention is not limited thereto.
S203, determining allocable subframe resources in a preset period according to the subframe ratio configuration.
The preset period is 20 milliseconds consistent with the voice packet period, and may be specifically set according to actual needs, where the embodiment of the present invention is not further limited. After the subframe configuration is determined, allocable subframe resources can be determined in a preset period according to the subframe configuration.
S204, allocating starting subframe resources for the M physical cells according to the allocable subframe resources and the physical cell identifications of the M physical cells.
It is to be noted that the method for allocating downlink resources in a cluster voice system provided in the embodiment of the present invention can be applied to at least two application scenarios: the two application scenarios are a TDD system scenario and an FDD system scenario, respectively.
In a first application scenario (TDD system):
in the practical application process, taking M as 6 and N as 3 as an example for explanation, that is, performing modulo 3 processing on the cell identifiers of 6 physical cells, so as to obtain the physical cell identifiers of 6 physical cells. The physical cell identifier after the physical cell processing with the cell identifier of 0 is 0, the physical cell identifier after the physical cell processing with the cell identifier of 1 is 1, the physical cell identifier after the physical cell processing with the cell identifier of 2 is 2, the physical cell identifier after the physical cell processing with the cell identifier of 3 is 0, the physical cell identifier after the physical cell processing with the cell identifier of 4 is 1, the physical cell identifier after the physical cell processing with the cell identifier of 5 is 2, and the physical cell identifier of the physical cell is subjected to modulo 3 processing, so that the physical cell identifiers corresponding to the 6 physical cells are obtained.
After acquiring the physical cell identifiers corresponding to the 6 physical cells, determining which subframe ratio configuration is adopted in 7 subframe ratio configurations in the TDD system. For example, taking the first subframe allocation configuration (i.e. allocation 0) as an example, the corresponding subframe resource conditions in the preset period are shown in table 1 below:
TABLE 1 ratio 0 corresponding to the resources of the subframe in the preset period (TDD, MOD3)
| 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 |
| D | S | U | U | U | D | S | U | U | U |
| 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 |
| D | S | U | U | U | D | S | U | U | U |
Wherein D and S may be used for downlink data transmission. It can be seen that, within 20 ms of the preset period, the allocable subframe resources are determined as follows: subframe No. 0, subframe No. 1, subframe No. 5, subframe No. 6, subframe No. 10, subframe No. 11, subframe No. 15, and subframe No. 16. See table 2 below.
Table 2 time domain interference coordination subframe partitioning (TDD, MOD3)
After the allocable subframe resources are determined, starting subframe resources can be allocated for the 6 physical cells according to the allocable subframe resources and the physical cell identifiers of the 6 physical cells. For example, in this embodiment of the present invention, the starting subframe resource allocated to the physical cell with the physical cell identifier of 0 is subframe No. 0, the starting subframe resource allocated to the physical cell with the physical cell identifier of 1 is subframe No. 5, the starting subframe resource allocated to the physical cell with the physical cell identifier of 2 is subframe No. 11, and then the available subframe resources of the physical cell with the physical cell identifier of 0 are subframe No. 0 and subframe No. 1; the available resources of the physical cell with the physical cell identifier 1 are the No. 5 subframe, the No. 6 subframe and the No. 10 subframe; the available resources of the physical cell with physical cell id 2 are subframe No. 11, subframe No. 15, and subframe No. 16. After the subframe resources available to each physical cell are determined, the voice packets may be scheduled through the subframe resources. In the scheduling process, the flag bit can be used to identify the voice packet which is not scheduled and the newly scheduled voice packet, after allocating resources for a certain voice packet, the flag bit of the voice packet is 1, if the current subframe fails to meet the requirements of the voice packet scheduling, the current subframe is extended to the next schedulable downlink subframe for continuing scheduling, and when the next subframe is scheduled, the voice packet is identified as the flag bit of 1, and is the voice packet which is not scheduled, and the scheduling can be continuously completed. If the flag bit of the voice packet is 0, the voice packet is a new voice packet, and at this time, the resource can be allocated only by calculating the starting position of the subframe according to the PCI modulo 3. Therefore, in the method for allocating downlink resources in a trunking voice system provided in the embodiment of the present invention, allocable subframe resources are allocated at intervals, and an absolute value of a difference between numbers of subframe resources allocated to two physical cells corresponding to different physical cell identifiers is smaller than a preset threshold, so that interference between the physical cells is reduced, and meanwhile, fairness of subframe resources allocated to each physical cell is ensured, thereby implementing dynamic allocation of subframe resources of the trunking voice system, and improving flexibility of subframe resource allocation in the trunking voice system. Of course, the present invention is only described by taking such a distribution manner as an example, but the present invention is not limited thereto.
Referring to table 2, the subframe division in the corresponding preset period of the second subframe proportioning configuration (i.e. proportioning 1) and the third subframe proportioning configuration (i.e. proportioning 2) is also shown in table 2. The allocation process is similar to that of the first subframe proportioning configuration (i.e. proportioning 0). The method specifically comprises the following steps:
further, for example, the second subframe allocation configuration (i.e. allocation 1) is described, and the corresponding subframe resource conditions in the preset period are shown in table 3 below:
TABLE 3 subframe resources in Preset period (TDD, MOD3) corresponding to ratio 1
| 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 |
| D | S | U | U | D | D | S | U | U | D |
| 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 |
| D | S | U | U | D | D | S | U | U | D |
It can be seen that, within 20 milliseconds of the preset period, the determined allocable downlink subframe resources are: subframe No. 0, subframe No. 1, subframe No. 4, subframe No. 5, subframe No. 6, subframe No. 9, subframe No. 10, subframe No. 11, subframe No. 14, subframe No. 15, subframe No. 16, and subframe No. 19.
As shown in table 2, for example, in the embodiment of the present invention, the starting subframe resource allocated to the physical cell with the physical cell identifier of 0 is the subframe No. 5, the starting subframe resource allocated to the physical cell with the physical cell identifier of 1 is the subframe No. 11, the starting subframe resource allocated to the physical cell with the physical cell identifier of 2 is the subframe No. 19, and then the downlink available subframe resource of the physical cell with the physical cell identifier of 0 is: subframe No. 5, subframe No. 6, subframe No. 9, and subframe No. 10; the available resources of the physical cell with the physical cell identifier 1 are subframe number 11, subframe number 14, subframe number 15 and subframe number 16; the available resources of the physical cell with the physical cell identifier 2 are subframe No. 19, subframe No. 0, subframe No. 1, and subframe No. 4. After the subframe resources available to each physical cell are determined, the voice packets may be scheduled through the subframe resources. Of course, the present invention is only described by taking such a distribution manner as an example, but the present invention is not limited thereto.
Further, for example, the third subframe allocation configuration (i.e., allocation 2) is described, and the corresponding subframe resource conditions in the preset period are shown in table 4 below:
TABLE 4 subframe resources in Preset period (TDD, MOD3) corresponding to ratio 2
| 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 |
| D | S | U | D | D | D | S | U | D | D |
| 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 |
| D | S | U | D | D | D | S | U | D | D |
It can be seen that, within 20 milliseconds of the preset period, the determined allocable downlink subframe resources are: subframe No. 0, subframe No. 1, subframe No. 3, subframe No. 4, subframe No. 5, subframe No. 6, subframe No. 8, subframe No. 9, subframe No. 10, subframe No. 11, subframe No. 13, subframe No. 14, subframe No. 15, subframe No. 16, subframe No. 18, and subframe No. 19.
As shown in table 2, for example, in the embodiment of the present invention, the starting subframe resource allocated to the physical cell with the physical cell identifier of 0 is the subframe No. 5, the starting subframe resource allocated to the physical cell with the physical cell identifier of 1 is the subframe No. 11, the starting subframe resource allocated to the physical cell with the physical cell identifier of 2 is the subframe No. 19, and then the available subframe resources of the physical cell with the physical cell identifier of 0 are the subframe No. 5, the subframe No. 6, the subframe No. 8, the subframe No. 9, and the subframe No. 10; the available resources of the physical cell with the physical cell identifier 1 are subframe number 11, subframe number 13, subframe number 14, subframe number 15, subframe number 16 and subframe number 18; the available resources of the physical cell with the physical cell identifier 2 are subframe No. 19, subframe No. 0, subframe No. 1, subframe No. 3, and subframe No. 4. After the subframe resources available to each physical cell are determined, the voice packets may be scheduled through the subframe resources. Of course, the present invention is only described by taking such a distribution manner as an example, but the present invention is not limited thereto.
Of course, in the first application scenario, modulo-6 processing may also be performed on the physical cell identifier to obtain a physical cell identifier corresponding to the physical cell; and then determining corresponding subframe ratio configuration, thereby allocating subframe resources for each physical cell. See table 5.
TABLE 5 time-domain interference coordination subframe partitioning (TDD, MOD6)
For example, in the embodiment of the present invention, a starting subframe shown in table 5 is taken as an example for description, and a specific allocation process thereof is similar to the allocation process of performing modulo-3 processing on a physical cell described above, and the descriptions in table 2, table 3, and table 4 may be combined, and the present invention is not described again here.
It should be noted that, in the TDD system, the embodiment of the present invention is only described by taking the first subframe configuration (i.e. ratio 0), the second subframe configuration (i.e. ratio 1), and the third subframe configuration (i.e. ratio 2) as examples, but the present invention is not limited thereto.
In a second application scenario (FDD system):
in an actual application process, taking M as 6, N as 3, and 20 milliseconds as an example, within a preset period of 20 milliseconds, the allocable subframe resources are determined as follows: subframe No. 0, subframe No. 1, subframe No. 2, …, and subframe No. 19, that is, all subframes are allocable downlink subframe resources. After the available subframe resources are determined, resources may be allocated for each physical cell. For example, please refer to table 6.
Table 6 time domain interference coordination subframe division (FDD, MOD3)
For example, in this embodiment of the present invention, the starting subframe resource allocated to the physical cell with the physical cell identifier of 0 is subframe No. 0, the starting subframe resource allocated to the physical cell with the physical cell identifier of 1 is subframe No. 14, and the starting subframe resource allocated to the physical cell with the physical cell identifier of 2 is subframe No. 7. After the subframe resources available to each physical cell are determined, the voice packets may be scheduled through the subframe resources. In the scheduling process, the flag bit can be used to identify the voice packet which is not scheduled and the newly scheduled voice packet, after allocating resources for a certain voice packet, the flag bit of the voice packet is 1, if the current subframe fails to meet the requirements of the voice packet scheduling, the current subframe is extended to the next schedulable downlink subframe for continuing scheduling, and when the next subframe is scheduled, the voice packet is identified as the flag bit of 1, and is the voice packet which is not scheduled, and the scheduling can be continuously completed. If the flag bit of the voice packet is 0, the voice packet is a new voice packet, and at this time, the resource can be allocated only by calculating the starting position of the subframe according to the PCI modulo 3. Therefore, in the method for allocating downlink resources in a trunking voice system provided in the embodiment of the present invention, allocable subframe resources are allocated at intervals, and an absolute value of a difference between numbers of subframe resources allocated to two physical cells corresponding to different physical cell identifiers is smaller than a preset threshold, so that interference between the physical cells is reduced, and meanwhile, fairness of subframe resources allocated to each physical cell is ensured, thereby implementing dynamic allocation of subframe resources of the trunking voice system, and improving flexibility of subframe resource allocation in the trunking voice system. Of course, the present invention is only described by taking such a distribution manner as an example, but the present invention is not limited thereto.
Of course, in the second application scenario, modulo-6 processing may also be performed on the physical cell identifier to obtain a physical cell identifier corresponding to the physical cell; thereby sub-framing resources for each physical cell. See table 7.
TABLE 7 time-domain interference coordination subframe partitioning (FDD, MOD6)
For example, in the embodiment of the present invention, table 7 is taken as an example for explanation, and a specific allocation process thereof is similar to the allocation process of performing modulo-3 processing on a physical cell described above, and the description of the part of table 6 may be combined, and details of the present invention are not repeated here.
It should be noted that the present invention is described by taking the starting subframes shown in table 6 and table 7 as examples, but the present invention is not limited thereto.
Fig. 3 is a schematic structural diagram of a device 30 for allocating downlink resources in a trunking voice system according to an embodiment of the present invention, which is applied to a trunking voice system and includes M physical cells, where a load of each physical cell in the M physical cells is smaller than a preset threshold, and M is an integer greater than or equal to 2. The apparatus 30 for allocating downlink resources in the trunking voice system may include:
a determining module 301, configured to determine allocable subframe resources in a preset period.
An allocating module 302, configured to allocate starting subframe resources for the M physical cells according to the allocable subframe resources and the physical cell identifiers of the M physical cells; the absolute value of the difference between the numbers of the subframe resources of the two physical cells corresponding to different physical cell identifiers is smaller than a first threshold value.
Optionally, the determining module 301 is specifically configured to obtain a subframe matching configuration; and determining allocable subframe resources in a preset period according to the subframe ratio configuration.
Optionally, the apparatus 30 for allocating downlink resources in a clustered voice system further includes an obtaining module 303, please refer to fig. 4, where fig. 4 is a schematic structural diagram of another apparatus 30 for allocating downlink resources in a clustered voice system according to an embodiment of the present invention.
An obtaining module 303, configured to obtain physical cell identifiers of the M physical cells.
Optionally, the obtaining module 303 is specifically configured to process the cell identifiers of the M physical cells to obtain a processing result; the treatment is modulo N treatment, wherein N is an integer which is more than or equal to 2 and less than or equal to M; and acquiring the physical cell identifications of the M physical cells according to the processing result.
The schematic structural diagram of the apparatus 30 for allocating downlink resources in a cluster voice system shown in the embodiment of the present invention may implement the technical solutions shown in any of the above method embodiments, and its implementation principle and beneficial effects are similar, which are not described herein again.
Those of ordinary skill in the art will understand that: all or a portion of the steps of implementing the above-described method embodiments may be performed by hardware associated with program instructions. The program may be stored in a computer-readable storage medium. When executed, the program performs steps comprising the method embodiments described above; and the aforementioned storage medium includes: various media that can store program codes, such as ROM, RAM, magnetic or optical disks.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (6)
1. A method for distributing downlink resources in a trunking voice system is applied to a trunking voice system comprising M physical cells, wherein the load of each physical cell in the M physical cells is less than a preset threshold, and M is an integer greater than or equal to 2, and the method is characterized by comprising the following steps:
determining allocable subframe resources in a preset period;
allocating starting subframe resources for the M physical cells according to the allocable subframe resources and the physical cell identifiers of the M physical cells; the absolute value of the difference between the number of the subframe resources of the two physical cells corresponding to different physical cell identifiers is smaller than a first threshold value; the distribution mode of the allocable subframe resources is interval distribution;
the determining the allocable subframe resources in the preset period includes:
acquiring subframe ratio configuration;
and determining allocable subframe resources in a preset period according to the subframe ratio configuration.
2. The method of claim 1, wherein before the allocating starting subframe resources for the M physical cells according to the allocable subframe resources and the physical cell identities of the M physical cells, further comprising:
and acquiring the physical cell identifiers of the M physical cells.
3. The method of claim 2, wherein the obtaining the physical cell identities of the M physical cells comprises:
processing the cell identifiers of the M physical cells to obtain a processing result; the treatment is modulo N treatment, wherein N is an integer which is more than or equal to 2 and less than or equal to M;
and acquiring the physical cell identifiers of the M physical cells according to the processing result.
4. A device for distributing downlink resources in a trunking voice system is applied to a trunking voice system and comprises M physical cells, wherein the load of each physical cell in the M physical cells is less than a preset threshold, and M is an integer greater than or equal to 2, and the device is characterized by comprising:
the determining module is used for determining allocable subframe resources in a preset period;
an allocation module, configured to allocate starting subframe resources for the M physical cells according to the allocable subframe resources and the physical cell identifiers of the M physical cells; the absolute value of the difference between the number of the subframe resources of the two physical cells corresponding to different physical cell identifiers is smaller than a first threshold value; the distribution mode of the allocable subframe resources is interval distribution;
the determining module is specifically configured to obtain a subframe ratio configuration; and determining allocable subframe resources in a preset period according to the subframe ratio configuration.
5. The apparatus of claim 4, further comprising:
an obtaining module, configured to obtain the physical cell identifiers of the M physical cells.
6. The apparatus of claim 5,
the acquiring module is specifically configured to process the cell identifiers of the M physical cells to obtain a processing result; the treatment is modulo N treatment, wherein N is an integer which is more than or equal to 2 and less than or equal to M; and acquiring the physical cell identifiers of the M physical cells according to the processing result.
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