CN111356244B - Resource allocation method and device - Google Patents
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- CN111356244B CN111356244B CN201811574581.4A CN201811574581A CN111356244B CN 111356244 B CN111356244 B CN 111356244B CN 201811574581 A CN201811574581 A CN 201811574581A CN 111356244 B CN111356244 B CN 111356244B
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- H—ELECTRICITY
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- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/56—Allocation or scheduling criteria for wireless resources based on priority criteria
- H04W72/566—Allocation or scheduling criteria for wireless resources based on priority criteria of the information or information source or recipient
- H04W72/569—Allocation or scheduling criteria for wireless resources based on priority criteria of the information or information source or recipient of the traffic information
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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
- H04W72/56—Allocation or scheduling criteria for wireless resources based on priority criteria
- H04W72/566—Allocation or scheduling criteria for wireless resources based on priority criteria of the information or information source or recipient
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Abstract
The invention provides a resource allocation method and a device, wherein the method comprises the following steps: acquiring the grade information of each scheduled terminal device, the data volume information and the priority information of the service data uplink-transmitted by each terminal device, the channel parameter information, and the time-frequency resource information and the grade information occupied by each terminal device when the time-frequency resource is allocated last time; and sequentially distributing time-frequency resources for each terminal device according to the grade information of each terminal device, the data volume information and the priority information of the service data uplink transmitted by each terminal device, the channel parameter information, the time-frequency resource information occupied by each terminal device when the time-frequency resource is distributed last time and the grade information. The method can ensure that the service data with higher priority is scheduled preferentially, and the terminal equipment with higher priority preferentially allocates the time-frequency resource, so that the time-frequency resource allocation better meets the actual requirements of the service and the terminal equipment.
Description
Technical Field
The present invention relates to the field of wireless data communications technologies, and in particular, to a method and an apparatus for allocating resources.
Background
In the public safety field, the uplink video service is scheduled and controlled by a scheduling station and mainly comprises services such as emergency map transmission, daily police service and the like. Different types of traffic have different priorities, such as emergency mapping has a higher real-time requirement than daily policing, and is also of higher importance, and therefore should be of higher priority. At the same time, users in the public safety domain are also classified, such as the command officer and the general user have different service priorities.
For video services, the size of the frequency resources required for transmission is affected by a plurality of factors such as resolution, code rate, channel quality, scene and the like of the video resources. The time-frequency resource size required for the uplink transmission is different for different video resource data.
Therefore, when time-frequency resources are allocated to the uplink video service in the public security field, the service type, the priority of the user and the size of the frequency resources required by the video resources should be fully considered to be comprehensively determined. However, in the prior art, the spectrum efficiency, fairness and the like of the system are generally taken as the resource allocation basis, and when a resource allocation scheme commonly used in the prior art is applied to the public security field, the service performance is often affected because appropriate resources cannot be allocated to the uplink video service in the public security field. Therefore, for the above public safety field uplink video service, a time-frequency resource allocation scheme meeting the requirements should be formulated.
Disclosure of Invention
Based on the state of the art, the invention provides a resource allocation method and a device, which can ensure that the allocated time-frequency resources meet the requirements of users.
A resource allocation method, comprising:
acquiring the grade information of each scheduled terminal device, the data volume information and the priority information of the service data uplink-transmitted by each terminal device, the channel parameter information, and the time-frequency resource information and the grade information occupied by each terminal device when the time-frequency resource is allocated last time;
and sequentially distributing time-frequency resources for each terminal device according to the grade information of each terminal device, the data volume information and the priority information of the service data uplink-transmitted by each terminal device, the channel parameter information, the time-frequency resource information occupied by each terminal device when the time-frequency resource is distributed last time and the grade information, so that each terminal device can uplink-transmit the service data by utilizing the distributed time-frequency resource.
Optionally, the allocating time-frequency resources for each terminal device sequentially according to the level information of each terminal device, the data amount information and the priority information of the service data uplink transmitted by each terminal device, the channel parameter information, the time-frequency resource information and the level information occupied by each terminal device when the time-frequency resource is allocated last time, and the method includes:
Grouping the terminal devices according to the priority information of the service data transmitted by the terminal devices in the uplink to obtain terminal device groups with different priorities; the priority of the service data of the uplink transmission of the terminal equipment in the same terminal equipment group is the same;
the following operations are respectively executed for each terminal equipment group in turn according to the order of the priority from high to low:
the following operations are respectively executed for each terminal device in the terminal device group in turn according to the order of the grades from high to low:
and distributing time-frequency resources for the terminal equipment according to the data volume information of the service data uplink-transmitted by the terminal equipment, the channel parameter information, the time-frequency resource information occupied by the terminal equipment in the last time of time-frequency resource distribution and the grade information.
Optionally, the method further comprises:
detecting whether the grades of the terminal equipment are changed or not in the terminal equipment according to a set period, and detecting whether the uplink transmission business data quantity of the terminal equipment exceeds a set threshold range or not;
if the grade of the terminal equipment changes or the uplink transmission business data quantity of the terminal equipment exceeds the set threshold range, the reserved time-frequency resources are allocated for the terminal equipment with the grade changing or the uplink transmission business data quantity exceeding the set threshold range or the time-frequency resources are allocated for the terminal equipment in turn.
Optionally, the method further comprises:
and sequentially performing adaptive transmission bandwidth processing and time domain elongation processing on the time-frequency resources allocated by the terminal equipment with limited transmitting power in each terminal equipment.
Optionally, the method further comprises:
and when the time-frequency resources are insufficient, sequentially distributing reserved time-frequency resources to the terminal equipment which does not complete the time-frequency resource distribution according to the order of the grades from high to low.
A resource allocation apparatus, comprising:
the information acquisition unit is used for acquiring the grade information of each scheduled terminal device, the data volume information and the priority information of the service data uplink transmitted by each terminal device, the channel parameter information, and the time-frequency resource information and the grade information occupied by each terminal device when the time-frequency resource is allocated last time;
the resource allocation unit is configured to allocate time-frequency resources for each terminal device in sequence according to the level information of each terminal device, the data amount information and the priority information of the service data uplink transmitted by each terminal device, the channel parameter information, the time-frequency resource information occupied by each terminal device when the time-frequency resource is allocated last time, and the level information, so that each terminal device uses the allocated time-frequency resource to uplink transmit the service data.
Optionally, the resource allocation unit is configured to sequentially allocate time-frequency resources to each terminal device according to the rank information of each terminal device, the data amount information and the priority information of the service data that are uplink transmitted by each terminal device, the channel parameter information, and the time-frequency resource information and the rank information that are occupied by each terminal device when the time-frequency resource is allocated last time, where the time-frequency resource is specifically configured to:
grouping the terminal devices according to the priority information of the service data transmitted by the terminal devices in the uplink to obtain terminal device groups with different priorities; the priority of the service data of the uplink transmission of the terminal equipment in the same terminal equipment group is the same;
the following operations are respectively executed for each terminal equipment group in turn according to the order of the priority from high to low:
the following operations are respectively executed for each terminal device in the terminal device group in turn according to the order of the grades from high to low:
and distributing time-frequency resources for the terminal equipment according to the data volume information of the service data uplink-transmitted by the terminal equipment, the channel parameter information, the time-frequency resource information occupied by the terminal equipment in the last time of time-frequency resource distribution and the grade information.
Optionally, the apparatus further comprises:
the detection unit is used for detecting whether the grades of the terminal equipment are changed or not in the terminal equipment according to a set period, and detecting whether the uplink transmission business data volume of the terminal equipment exceeds a set threshold range or not;
and the processing unit is used for distributing reserved time-frequency resources for the terminal equipment with the changed grade or the uplink transmission business data quantity exceeding the set threshold range or distributing time-frequency resources for each terminal equipment in turn when the grade of the terminal equipment is changed or the uplink transmission business data quantity exceeds the set threshold range.
Optionally, the resource allocation unit is further configured to:
and sequentially performing adaptive transmission bandwidth processing and time domain elongation processing on the time-frequency resources allocated by the terminal equipment with limited transmitting power in each terminal equipment.
Optionally, the resource allocation unit is further configured to:
and when the time-frequency resources are insufficient, sequentially distributing reserved time-frequency resources to the terminal equipment which does not complete the time-frequency resource distribution according to the order of the grades from high to low.
A resource allocation apparatus, comprising:
a memory and a processor;
The memory is connected with the processor and used for storing programs;
the processor is configured to implement the following functions by running the program in the memory:
acquiring the grade information of each scheduled terminal device, the data volume information and the priority information of the service data uplink-transmitted by each terminal device, the channel parameter information, and the time-frequency resource information and the grade information occupied by each terminal device when the time-frequency resource is allocated last time; and sequentially distributing time-frequency resources for each terminal device according to the grade information of each terminal device, the data volume information and the priority information of the service data uplink-transmitted by each terminal device, the channel parameter information, the time-frequency resource information occupied by each terminal device when the time-frequency resource is distributed last time and the grade information, so that each terminal device can uplink-transmit the service data by utilizing the distributed time-frequency resource.
Optionally, the processor is configured to sequentially allocate time-frequency resources to each terminal device according to the level information of each terminal device, the data amount information and the priority information of the service data uplink transmitted by each terminal device, the channel parameter information, the time-frequency resource information occupied by each terminal device when the time-frequency resource is allocated last time, and the level information, where the time-frequency resource is specifically:
Grouping the terminal devices according to the priority information of the service data transmitted by the terminal devices in the uplink to obtain terminal device groups with different priorities; the priority of the service data of the uplink transmission of the terminal equipment in the same terminal equipment group is the same;
the following operations are respectively executed for each terminal equipment group in turn according to the order of the priority from high to low:
the following operations are respectively executed for each terminal device in the terminal device group in turn according to the order of the grades from high to low:
and distributing time-frequency resources for the terminal equipment according to the data volume information of the service data uplink-transmitted by the terminal equipment, the channel parameter information, the time-frequency resource information occupied by the terminal equipment in the last time of time-frequency resource distribution and the grade information.
Optionally, the processor is further configured to:
detecting whether the grades of the terminal equipment are changed or not in the terminal equipment according to a set period, and detecting whether the uplink transmission business data quantity of the terminal equipment exceeds a set threshold range or not; if the grade of the terminal equipment changes or the uplink transmission business data quantity of the terminal equipment exceeds the set threshold range, the reserved time-frequency resources are allocated for the terminal equipment with the grade changing or the uplink transmission business data quantity exceeding the set threshold range or the time-frequency resources are allocated for the terminal equipment in turn.
Optionally, the processor is further configured to:
and sequentially performing adaptive transmission bandwidth processing and time domain elongation processing on the time-frequency resources allocated by the terminal equipment with limited transmitting power in each terminal equipment.
Optionally, the processor is further configured to:
and when the time-frequency resources are insufficient, sequentially distributing reserved time-frequency resources to the terminal equipment which does not complete the time-frequency resource distribution according to the order of the grades from high to low.
When the time-frequency resource is allocated to the terminal equipment scheduled by the scheduling station, the time-frequency resource is allocated to each terminal equipment in sequence according to the grade of each terminal equipment, the data quantity information and the priority information of the service data transmitted by each terminal equipment in the uplink, the channel parameter information of the uplink channel, the time-frequency resource information and the grade information occupied by each terminal equipment in the last time-frequency resource allocation, so that the service data with higher priority can be scheduled preferentially, the time-frequency resource is allocated preferentially to the terminal equipment with higher grade, and the resource allocation process considers the last time resource allocation condition, so that the time-frequency resource allocation better meets the actual requirements of the service and the terminal equipment.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present invention, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic flow chart of a resource allocation method according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a resource allocation result provided by an embodiment of the present invention;
fig. 3 is a flow chart of another resource allocation method according to an embodiment of the present invention;
fig. 4 is a flow chart of another resource allocation method according to an embodiment of the present invention;
fig. 5 is a schematic diagram of a resource allocation result after time domain elongation of a time-frequency resource according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a resource allocation device according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of another resource allocation device according to an embodiment of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The embodiment of the invention discloses a resource allocation method which can be applied to a base station to allocate wireless time-frequency resources for user terminal equipment, so that the terminal equipment in the coverage area of the base station can realize uplink video data transmission at the same time.
Referring to fig. 1, the resource allocation method disclosed in the embodiment of the present invention includes:
s101, acquiring grade information of each scheduled terminal device, data amount information and priority information of service data uplink-transmitted by each terminal device, channel parameter information, time-frequency resource information and grade information occupied by each terminal device when time-frequency resource is allocated last time;
specifically, each terminal device to be scheduled refers to each terminal device to be scheduled by the scheduling station, which has a service data uploading requirement. Within the coverage of a base station, there may be numerous user terminal devices, each accessing the communication network through the base station. In the embodiment of the present invention, the terminal device particularly represents a terminal device for performing video service, for example, a monitoring device, and the terminal device collects video data and then transmits the video data to the scheduling center through the base station in an uplink manner. The dispatching desk of the dispatching center is used for dispatching the uplink transmission data of the terminal equipment. Therefore, when the scheduling station schedules the terminal device, the terminal device should uplink transmission of service data to the scheduling station through the connected base station in response to the scheduling. It can be understood that the scheduling station may also schedule the terminal device to uplink transmit other types of service data, such as voice data, and the embodiment of the present invention does not strictly limit the application scenario of the technical solution of the embodiment of the present invention.
The technical scheme of the embodiment of the invention is mainly applied to the public safety field and aims to solve the problem of the allocation of the uplink physical bandwidth resources in the public safety field. In the public security field, the uplink video data transmission mainly comprises emergency image transmission and daily police video transmission, wherein the emergency image transmission generally refers to important video transmission with high real-time requirements and needs to be immediately uploaded. In general, if emergency image transmission and daily police video transmission services occur simultaneously, emergency real-time video should be preferentially transmitted. That is, in the public safety domain, different types of traffic data uploads have different priorities. In order to ensure that the service data transmission with high priority can be smoothly carried out, the embodiment of the invention takes the priority of the uplink transmission of the service data as the basis of the time-frequency resource allocation of the uplink service data transmission bandwidth, and sets that the priority of the real-time video service data is higher than the priority of the daily police service video.
Meanwhile, the grades of different users are different, for example, the grades of the commander and the common user are different, so that the priorities when the terminal devices of the different grade users uplink to transmit the service data are also different. The embodiment of the invention takes the grade of the user terminal equipment as the resource allocation basis when allocating the uplink time-frequency resource for the terminal equipment.
When the technical scheme of the embodiment of the invention is adopted to allocate the uplink time-frequency resources for the terminal equipment scheduled by the scheduling station each time, firstly, the registration information of each scheduled terminal equipment, the data volume information of the uplink transmission service data of each terminal equipment, the priority information of the uplink transmission service data of each terminal equipment, the channel parameter information of a data channel, the time-frequency resource information occupied by each terminal equipment when the last time-frequency resource is allocated and the grade information of the terminal equipment when the last time-frequency resource is allocated are acquired.
The time-frequency resource occupied when the last time of time-frequency resource allocation is the time-frequency resource allocated to the terminal device last time before the base station allocates the time-frequency resource to the terminal device by adopting the technical scheme of the embodiment of the invention. Correspondingly, the above grade information of the terminal equipment when the time-frequency resource is allocated last time refers to the grade information of the terminal equipment when the base station allocates the time-frequency resource for the terminal equipment last time before the time adopts the technical scheme of the embodiment of the invention to allocate the time-frequency resource for the terminal equipment.
Further, in particular, when implementing the technical scheme of the embodiment of the present invention, the technical scheme of the embodiment of the present invention may be executed periodically, so that the time-frequency resource information and the class information occupied by each terminal device in the last time of time-frequency resource allocation, specifically, the time-frequency resource allocated to each terminal device in the last time of time-frequency resource allocation period in which the time-frequency resource is allocated by adopting the technical scheme of the embodiment of the present invention in this period, and the class information of each terminal device in the time-frequency resource allocation period in which the time-frequency resource is allocated to each terminal device in the last time of time-frequency resource allocation period.
When the technical scheme of the embodiment of the invention is periodically executed to allocate resources for the terminal equipment, the period is determined by the frame rate of the uplink service data. At this time, the base station also needs to acquire frame rate information of service data uplink transmitted by each terminal device, and then determines a period for allocating time-frequency resources to the terminal device according to the acquired frame rate information. The embodiment of the invention only takes the time-frequency resource allocation process in a single period as an illustration of the processing process of the resource allocation method provided by the embodiment of the invention, and when the technical scheme of the embodiment of the invention is periodically executed, the processing process in each period can be executed by referring to the embodiment of the invention.
S102, according to the grade information of each terminal device, the data volume information and the priority information of the service data uplink-transmitted by each terminal device, the channel parameter information, the time-frequency resource information occupied by each terminal device when the time-frequency resource is allocated last time and the grade information, time-frequency resources are allocated to each terminal device in sequence, so that each terminal device can uplink-transmit the service data by using the allocated time-frequency resources.
Specifically, after the scheduled terminal devices, that is, the class information of each terminal device to be allocated with the time-frequency resource of the uplink channel, the data amount information of the uplink transmission service data, the priority information of the service data, the channel parameter information of the uplink channel, the video resource information occupied by each terminal device when the time-frequency resource is allocated last time and the class information when the time-frequency resource is allocated last time are obtained in step S101, the embodiment of the present invention allocates the time-frequency resource for the terminal device uploading the service data with higher priority first according to the priority of the service data, and then allocates the time-frequency resource for the terminal device uploading the service data with lower priority.
Meanwhile, because the user terminal equipment is divided into different grades, for different terminal equipment uploading service data with the same priority, the time-frequency resources are allocated in sequence according to the order of the grades of the terminal equipment from high to low.
For example, it is assumed that the embodiment of the present invention allocates time-frequency resources for the scheduled terminal devices 1 to 15 in a period of 40ms, and includes 4 radio frames within 40ms, each radio frame including 8 uplink subframes. In the initial state, after time-frequency resources are allocated to each terminal device according to the above-mentioned time-frequency resource allocation method, the time-frequency resources occupied by each terminal device are shown in fig. 2. The proportion of the time-frequency resources allocated to the terminal devices 1-15 to the total time-frequency resources is a, the rest time-frequency resources are put into a resource pool, and the time-frequency resources in the pool are used for retransmission or resource expansion and contraction.
In the next time or in the next cycle, the time-frequency resource allocation situation of the previous time or in the previous cycle is used as a reference for allocating the time-frequency resource for the terminal devices 1 to 15, but the time-frequency resource allocation situation is similar to that shown in fig. 2 in general.
After the base station allocates the uplink channel time-frequency resource for each scheduled terminal device, the base station sends the resource allocation result to each terminal device by using the set signaling. After each terminal device receives the time-frequency resource allocation information, each terminal device uplink transmits service data according to the time-frequency resource allocated to the uplink channel of each terminal device.
As can be seen from the above description, when the technical solution of the embodiment of the present invention is adopted to allocate time-frequency resources for terminal devices scheduled by a scheduling station, time-frequency resources are allocated to each terminal device in sequence according to the level of each terminal device, the data amount information and priority information of service data uplink transmitted by each terminal device, the channel parameter information of an uplink channel, the time-frequency resource information and the level information occupied by each terminal device when the time-frequency resources are allocated last time, so that it can be ensured that service data with higher priority is preferentially scheduled, and terminal devices with higher levels preferentially allocate time-frequency resources, and the above resource allocation process considers the last resource allocation situation, so that the time-frequency resource allocation better meets the actual requirements of services and terminal devices.
Optionally, in another embodiment of the present invention, referring to fig. 3, time-frequency resources are allocated to each terminal device in sequence according to the level information of each terminal device, the data amount information and priority information of the service data uplink transmitted by each terminal device, the channel parameter information, the time-frequency resource information occupied by each terminal device when the time-frequency resource is allocated last time, and the level information, where the time-frequency resource allocation includes:
S302, grouping the terminal devices according to the priority information of the service data uplink transmitted by the terminal devices to obtain terminal device groups with different priorities; the priority of the service data of the uplink transmission of the terminal equipment in the same terminal equipment group is the same;
specifically, in view of different priorities of service data uplink-transmitted by each terminal device scheduled by the scheduling station, the embodiment of the invention respectively classifies terminal devices with the same priorities of uplink-transmitted service data into a group based on priority information of the service data uplink-transmitted by each terminal device scheduled by the scheduling station, thereby forming a terminal device group. It will be appreciated that the priorities of the service data uplink transmitted at the respective terminal devices in the same terminal device group are the same.
S303, sequentially executing the following operations on each terminal equipment group according to the order of the priority from high to low:
specifically, after grouping the terminal devices in step S302, the priority of each obtained terminal device group may be further ordered from high to low, where the specific ordering basis is the priority of the service data uplink transmitted by the terminal device in each terminal device group, that is, the order of the priority of the service data uplink transmitted by the terminal device included is from high to low, and each terminal device group is ordered.
After ordering the terminal equipment groups, the embodiment of the invention sequentially traverses the ordered terminal equipment groups according to the order of the priority from high to low, and when traversing to one terminal equipment group, the embodiment of the invention executes the following step S304.
S304, respectively executing the following operations on each terminal device in the terminal device group in turn according to the order of the grades from high to low:
specifically, when traversing to a certain terminal equipment group, the terminal equipment group further comprises a plurality of terminal equipment, and at this time, the embodiment of the invention sequentially allocates time-frequency resources for the traversed terminal equipment group according to the order of the terminal equipment grades from high to low. The grade of the terminal equipment can be determined according to the attribute of the terminal equipment, for example, the grade of the terminal equipment used by important users such as command officials should be higher than the grade of the terminal equipment used by common users; alternatively, the level of the terminal device may be determined according to the location of the terminal device, for example, the level of the terminal device in the central area of the base station is higher than the level of the terminal device in the edge area of the base station. The comprehensive division can roughly distinguish the grade relation of different terminal devices as follows: center important user > edge important user > center normal user > edge normal user.
Similarly, when traversing to a certain terminal device group, each terminal device in the terminal device group may be ordered according to the order from high to low, and then each terminal device after the order is traversed in turn according to the order from high to low, and when traversing to one terminal device, the uplink channel time-frequency resource is allocated to the traversed terminal device.
S305, time-frequency resources are allocated to the terminal equipment according to the data volume information of the service data which is transmitted by the terminal equipment in the uplink, the channel parameter information, the time-frequency resource information and the grade information which are occupied by the terminal equipment in the last time of time-frequency resource allocation.
Specifically, when time-frequency resources are allocated to the traversed terminal equipment, the embodiment of the invention allocates time-frequency resources to the terminal equipment according to the data volume information of the service data transmitted by the traversed terminal equipment in the uplink, the parameter information of the uplink channel, the time-frequency resource information occupied by the terminal equipment when the time-frequency resources are allocated last time, and the grade information of the terminal equipment when the time-frequency resources are allocated last time.
The data amount information of the service data uplink transmitted by the terminal device refers to data amount information of the service data uplink transmitted by the terminal device, which is obtained by further predicting the BSR of the terminal device when the time-frequency resource is allocated by the base station after the base station obtains the BSR sent by the terminal device when the time-frequency resource is allocated last time. In the embodiment of the invention, the ratio of the BSR of the terminal equipment in the time-frequency resource allocation and the BSR of the terminal equipment in the last time-frequency resource allocation is used as the basis of the time-frequency resource allocation.
The parameter information of the uplink channel may also be referred to as channel quality information, and refers to the size of a transport block under a set modulation and coding strategy.
In particular, the purpose of acquiring the level information of the terminal device when the time-frequency resource is allocated last time in the embodiment of the present invention is to compare the level information of the terminal device when the time-frequency resource is allocated this time, so as to determine whether the level information of the terminal device changes relative to the time-frequency resource allocation last time when the time-frequency resource is allocated this time, thereby determining whether to adjust the time-frequency resource amount allocated to the terminal device.
Based on the obtained related information of the terminal equipment, the embodiment of the invention takes the related information as the basis to allocate uplink channel time-frequency resources for the terminal equipment:
RB cur ＝f(RB pre ,BoRatio,AmcTbs cur ,AmcTbs pre ,r φ )
wherein RB is cur Representing the time-frequency resources allocated at the time; RB (radio bearer) pre Representing the time-frequency resource allocated in the last time of time-frequency resource allocation; the ratio of the amount of the service data uploaded during the time-frequency resource allocation and the amount of the service data uploaded during the last time-frequency resource allocation is represented by the ratio; amcTbs cur Representing the size of a transmission block under a set modulation and coding strategy during the time-frequency resource allocation; amcTbs pre Representing the size of a transmission block under the same set modulation and coding strategy when the time-frequency resource is allocated last time; r represents the multiple of the change of the time-frequency resource quantity required by the change of the grade of the terminal equipment; phi represents the level change of the terminal equipment.
In the above formula, the value of the boreatio is divided into two cases:
i)Low_ratio<BoRatio<High_ratio,BoRatio＝1；
ii) ratio < low_ratio or ratio > high_ratio, ratio=ratio.
That is, when the value of the ratio is between low_ratio and high_ratio, the value of the ratio is 1, otherwise, the value of the ratio is the actual value of the ratio itself.
When the level of the terminal device is changed from 0 to 1, Φ=1; when the level of the terminal device is changed from 1 to 0, Φ= -1; when the level of the terminal device is unchanged, Φ=0. Correspondingly, when the level of the terminal device is changed from 0 to 2, Φ=2; when the level of the terminal device is changed from 1 to 4, it can be understood that the level of the terminal device is changed by several levels, and the value of phi is correspondingly several, when the level of the terminal device is increased, the phi is positive, and when the level of the terminal device is decreased, the phi is negative.
For example, in a relatively simple time-frequency resource allocation method, according to the above-described processing procedure, the currently allocated video resource is calculated according to the following formula:
Meanwhile, it should be noted that the above formula is only an example, and can be used as a time-frequency resource for simple calculation, and the above formula is not necessarily suitable for an actual scene when the technical scheme of the embodiment of the present invention is actually implemented, and the time-frequency resource calculation method is formulated according to the actual requirement and in combination with the above-described embodiment of the present invention.
Step S301 in the above embodiment is the same as step S101 in the method embodiment shown in fig. 1, and the specific processing procedure is referred to the content of the method embodiment shown in fig. 1, and is not repeated here.
Optionally, in another embodiment of the present invention, it is further disclosed that the resource allocation method provided by the present invention further includes:
and when the time-frequency resources are insufficient, sequentially distributing reserved time-frequency resources to the terminal equipment which does not complete the time-frequency resource distribution according to the order of the grades from high to low.
Specifically, the embodiment of the invention determines the time-frequency resource allocation period according to the frame rate of the service data of the uplink transmission of the scheduled terminal equipment, and then allocates the time-frequency resource to the scheduled terminal equipment according to the resource allocation method introduced by the embodiment until the time-frequency resource allocation period is reached. And, as shown in fig. 2, in each time of time-frequency resource allocation, in the embodiment of the present invention, part of time-frequency resources in the total amount of time-frequency resources are allocated to each terminal device, and not all available time-frequency resources are allocated to each terminal device.
As can be seen from fig. 2, in the embodiment of the present invention, when allocating the time-frequency resources, a reserved portion of the time-frequency resources are put into the pool of resources. When a base station allocates time-frequency resources except for the time-frequency resources in the pool to each scheduled terminal device, if the condition of insufficient time-frequency resources occurs, namely the time-frequency resources except for the time-frequency resources in the pool cannot meet the requirements of all the terminal devices, the embodiment of the invention allocates the resources in the resource pool to the terminal devices in sequence according to the order of the grades from high to low, namely the time-frequency resources in the pool are called, and the requirements of the terminal devices with higher grades are preferentially met. For the terminal equipment with lower level, the requirement of the terminal equipment is not met when the time-frequency resource is allocated, and the time-frequency resource is allocated to the terminal equipment when the video resource of the next period is allocated.
According to the processing of the embodiment of the invention, when the time-frequency resources are short, the time-frequency resource requirements of important user terminal equipment can be preferentially ensured, then the requirements of other terminal equipment are considered, and differentiated time-frequency resource allocation is carried out according to the grade of the user terminal equipment, so that the time-frequency resources are favorably and practically allocated, and the user requirements are met.
Optionally, in another embodiment of the present invention, referring to fig. 4, the method further includes:
S403, detecting whether the grades of the terminal equipment in the terminal equipment are changed according to a set period, and detecting whether the uplink transmission business data quantity of the terminal equipment exceeds a set threshold range;
specifically, after time-frequency resources are allocated to each scheduled terminal device, each scheduled terminal device may uplink transmit service data according to the allocated time-frequency resources. Meanwhile, the embodiment of the invention further periodically detects whether the scheduled terminal equipment generates level change or not and detects whether the uplink transmission business data volume of the terminal equipment exceeds a set threshold range or not. Specifically, in the embodiment of the present invention, the ratio of the amount of uplink traffic data during the current time-frequency resource allocation to the amount of uplink traffic data during the last time-frequency resource allocation is used as the time-frequency resource allocation basis, so in the embodiment of the present invention, whether the amount of uplink traffic data of the detection terminal device exceeds the set threshold range or not is actually detected, and whether the ratio of the amount of uplink traffic data during the current time-frequency resource allocation to the amount of uplink traffic data during the last time-frequency resource allocation exceeds the set threshold range or not.
The level of the terminal device changes, including the identity of the terminal device itself changes, for example, the terminal device becomes an important user as a common user, or the position of the terminal device changes, for example, the terminal device moves from the edge to the center, etc.
If the level of the terminal equipment changes or the uplink traffic data volume of the terminal equipment exceeds the set threshold range, step S404 is executed to allocate reserved time-frequency resources for the terminal equipment with the level changing or the uplink traffic data volume exceeding the set threshold range or allocate time-frequency resources for the terminal equipment in turn.
Specifically, when the level of the terminal device changes, or the amount of uplink traffic data of the terminal device exceeds a set threshold range, the amount of demand of the terminal device for uplink time-frequency resources changes, so that the time-frequency resources allocated to each terminal device in advance cannot meet the actual requirements of each terminal device. When detecting that the level of the terminal equipment changes or that the amount of service data uplink transmitted by the terminal equipment exceeds a set threshold range and the needed time-frequency resources are reduced, the time-frequency resources which are temporarily not needed by the terminal equipment are classified into pool resource pools shown in fig. 2 so as to be distributed to other terminal equipment for use. Furthermore, the time-frequency resources may be directly reassigned to all the terminal devices that have been assigned with time-frequency resources, and the specific reassignment process is the same as the process described in the above embodiment of the present invention.
For example, in a dead-spot monitoring network, when a monitoring scene changes, the traffic data volume changes, that is, the ratio is greater than the upper limit high_ratio or less than the lower limit low_ratio; in addition, when the service data is changed from an I frame to a P or B frame, the resources required by each frame are reduced; when the business data is changed from B frame/P frame to I frame, the resources needed by each frame are increased; when the terminal equipment level changes, the UE changing from 0 to 1 needs more resources; the required resources decrease when the terminal device class changes from 1 to 0. When the above change occurs, the resulting expansion or contraction of the resources is accessed from the pool or the resource allocation is resumed.
In a mobile network, when a terminal device moves within the coverage area of a base station, the change of the position can bring about the change of the grade of the terminal device. For example, the level of the terminal device may rise when it moves from the base station edge to the base station center, and the level may fall when it moves from the base station center to the base station edge. Correspondingly, when the level of the terminal equipment changes, the required time-frequency resource also changes, and at this time, according to the embodiment of the invention, the resource in the resource pool should be allocated to the terminal equipment with the changed level, or the time-frequency resource left by the terminal equipment is put into the pool for other terminals to use, or the time-frequency resource can be allocated again to the terminal equipment under the base station.
Steps S401 to S402 in the present embodiment correspond to steps S101 to S102 in the method embodiment shown in fig. 1, respectively, and the specific content thereof is shown in the method embodiment shown in fig. 1, and will not be described herein.
Optionally, in another embodiment of the present invention, it is disclosed that the method further includes:
and sequentially performing adaptive transmission bandwidth processing and time domain elongation processing on the time-frequency resources allocated by the terminal equipment with limited transmitting power in each terminal equipment.
Specifically, in a mobile network, when the transmission power of a terminal device of a user is limited, the allocated time-frequency resources cannot be fully utilized, and at this time, after the time-frequency resources are allocated to each terminal device scheduled by a scheduling station, the embodiment of the invention performs adaptive transmission bandwidth (Adaptive Transmission Bandwidth, ATB) processing on the time-frequency resources allocated to the terminal device with limited transmission power, and then performs time-domain elongation processing on the time-frequency resources allocated thereto.
The specific time domain elongation process is as follows: firstly, determining the number of resource blocks which can be used by terminal equipment with limited transmitting power on a TTI frequency domain; and then calculating how many TTIs are needed according to the service data volume that the terminal equipment needs to transmit uplink. And finally, distributing the same number of adjacent TTIs to the terminal equipment with limited time domain. Referring to fig. 5, time domain elongation of time-frequency resources of terminal devices UE1, UE2, UE3, UE4, UE15, and UE16 is shown.
The embodiment of the invention also discloses a resource allocation device, which is shown in fig. 6, and comprises:
an information obtaining unit 100, configured to obtain rank information of each scheduled terminal device, data amount information and priority information of service data that are uplink transmitted by each terminal device, channel parameter information, and time-frequency resource information and rank information that are occupied by each terminal device when time-frequency resource is allocated last time;
the resource allocation unit 110 is configured to allocate time-frequency resources for each terminal device in sequence according to the rank information of each terminal device, the data amount information and the priority information of the service data that are uplink-transmitted by each terminal device, the channel parameter information, the time-frequency resource information and the rank information that are occupied by each terminal device when the time-frequency resource is allocated last time, so that each terminal device uplink-transmits the service data by using the allocated time-frequency resource.
The resource allocation unit 110 is configured to, according to the rank information of each terminal device, the data amount information and the priority information of the service data uplink transmitted by each terminal device, the channel parameter information, the time-frequency resource information occupied by each terminal device when the time-frequency resource is allocated last time, and the rank information, sequentially allocate time-frequency resources to each terminal device:
Grouping the terminal devices according to the priority information of the service data transmitted by the terminal devices in the uplink to obtain terminal device groups with different priorities; the priority of the service data of the uplink transmission of the terminal equipment in the same terminal equipment group is the same;
the following operations are respectively executed for each terminal equipment group in turn according to the order of the priority from high to low:
the following operations are respectively executed for each terminal device in the terminal device group in turn according to the order of the grades from high to low:
and distributing time-frequency resources for the terminal equipment according to the data volume information of the service data uplink-transmitted by the terminal equipment, the channel parameter information, the time-frequency resource information occupied by the terminal equipment in the last time of time-frequency resource distribution and the grade information.
In addition, the resource allocation unit 110 is configured to:
and sequentially performing adaptive transmission bandwidth processing and time domain elongation processing on the time-frequency resources allocated by the terminal equipment with limited transmitting power in each terminal equipment.
And when the time-frequency resources are insufficient, sequentially distributing reserved time-frequency resources to the terminal equipment which does not complete the time-frequency resource distribution according to the order of the grades from high to low.
Optionally, in another embodiment of the present invention, the apparatus further includes:
the detection unit is used for detecting whether the grades of the terminal equipment are changed or not in the terminal equipment according to a set period, and detecting whether the uplink transmission business data volume of the terminal equipment exceeds a set threshold range or not;
and the processing unit is used for distributing reserved time-frequency resources for the terminal equipment with the changed grade or the uplink transmission business data quantity exceeding the set threshold range or distributing time-frequency resources for each terminal equipment in turn when the grade of the terminal equipment is changed or the uplink transmission business data quantity exceeds the set threshold range.
Specifically, for the specific working content of each unit in the above embodiment, please refer to the content of the above method embodiment, which is not described herein again.
The embodiment of the invention also discloses a resource allocation device, which is shown in fig. 7, and comprises:
a memory 200 and a processor 210;
wherein the memory 200 is connected to the processor 210 for storing a program;
a processor 210 for implementing the following functions by running a program in the memory 200:
Acquiring the grade information of each scheduled terminal device, the data volume information and the priority information of the service data uplink-transmitted by each terminal device, the channel parameter information, and the time-frequency resource information and the grade information occupied by each terminal device when the time-frequency resource is allocated last time; and sequentially distributing time-frequency resources for each terminal device according to the grade information of each terminal device, the data volume information and the priority information of the service data uplink-transmitted by each terminal device, the channel parameter information, the time-frequency resource information occupied by each terminal device when the time-frequency resource is distributed last time and the grade information, so that each terminal device can uplink-transmit the service data by utilizing the distributed time-frequency resource.
The processor 210 is configured to, according to the rank information of each terminal device, the data amount information and the priority information of the service data uplink transmitted by each terminal device, the channel parameter information, the time-frequency resource information occupied by each terminal device when the time-frequency resource is allocated last time, and the rank information, sequentially allocate time-frequency resources to each terminal device:
Grouping the terminal devices according to the priority information of the service data transmitted by the terminal devices in the uplink to obtain terminal device groups with different priorities; the priority of the service data of the uplink transmission of the terminal equipment in the same terminal equipment group is the same;
the following operations are respectively executed for each terminal equipment group in turn according to the order of the priority from high to low:
the following operations are respectively executed for each terminal device in the terminal device group in turn according to the order of the grades from high to low:
and distributing time-frequency resources for the terminal equipment according to the data volume information of the service data uplink-transmitted by the terminal equipment, the channel parameter information, the time-frequency resource information occupied by the terminal equipment in the last time of time-frequency resource distribution and the grade information.
Furthermore, the processor 210 is further configured to:
detecting whether the grades of the terminal equipment are changed or not in the terminal equipment according to a set period, and detecting whether the uplink transmission business data quantity of the terminal equipment exceeds a set threshold range or not; if the grade of the terminal equipment changes or the uplink transmission business data quantity of the terminal equipment exceeds the set threshold range, the reserved time-frequency resources are allocated for the terminal equipment with the grade changing or the uplink transmission business data quantity exceeding the set threshold range or the time-frequency resources are allocated for the terminal equipment in turn.
And sequentially performing adaptive transmission bandwidth processing and time domain elongation processing on the time-frequency resources allocated by the terminal equipment with limited transmitting power in each terminal equipment.
And when the time-frequency resources are insufficient, sequentially distributing reserved time-frequency resources to the terminal equipment which does not complete the time-frequency resource distribution according to the order of the grades from high to low.
Specifically, the specific working content of each part of the resource allocation apparatus in the above embodiment is referred to the content of the above method embodiment, and will not be described herein.
Finally, it is further noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (12)
1. A method for resource allocation, comprising:
acquiring the grade information of each scheduled terminal device, the data volume information and the priority information of the service data uplink-transmitted by each terminal device, the channel parameter information, and the time-frequency resource information and the grade information occupied by each terminal device when the time-frequency resource is allocated last time;
according to the grade information of each terminal device, the data volume information and the priority information of the service data uplink-transmitted by each terminal device, the channel parameter information, the time-frequency resource information occupied by each terminal device when the time-frequency resource is allocated last time and the grade information, time-frequency resources are allocated to each terminal device in sequence, so that each terminal device can uplink-transmit the service data by using the allocated time-frequency resources;
When time-frequency resources are allocated to the terminal devices in sequence, reserving the time-frequency resources and storing the time-frequency resources in a resource pool;
when the uplink traffic data volume of the terminal equipment exceeds a set threshold range, the reserved time-frequency resource is allocated for the terminal equipment of which the uplink traffic data volume exceeds the set threshold range;
and when the time-frequency resources are insufficient, sequentially distributing reserved time-frequency resources to the terminal equipment which does not complete the time-frequency resource distribution according to the order of the grades from high to low.
2. The method according to claim 1, wherein the sequentially allocating time-frequency resources for each terminal device according to the class information of each terminal device, the data amount information and the priority information of the service data uplink transmitted by each terminal device, the channel parameter information, the time-frequency resource information occupied by each terminal device at the last time of time-frequency resource allocation, and the class information includes:
grouping the terminal devices according to the priority information of the service data transmitted by the terminal devices in the uplink to obtain terminal device groups with different priorities; the priority of the service data of the uplink transmission of the terminal equipment in the same terminal equipment group is the same;
The following operations are respectively executed for each terminal equipment group in turn according to the order of the priority from high to low:
the following operations are respectively executed for each terminal device in the terminal device group in turn according to the order of the grades from high to low:
and distributing time-frequency resources for the terminal equipment according to the data volume information of the service data uplink-transmitted by the terminal equipment, the channel parameter information, the time-frequency resource information occupied by the terminal equipment in the last time of time-frequency resource distribution and the grade information.
3. The method according to claim 1, characterized in that the method further comprises:
detecting whether the grades of the terminal equipment are changed in each terminal equipment according to a set period;
if the grade of the terminal equipment is changed, the reserved time-frequency resources are allocated to the terminal equipment with the changed grade or the time-frequency resources are allocated to the terminal equipment in turn.
4. A method according to any one of claims 1 to 3, further comprising:
and sequentially performing adaptive transmission bandwidth processing and time domain elongation processing on the time-frequency resources allocated by the terminal equipment with limited transmitting power in each terminal equipment.
5. A resource allocation apparatus, comprising:
the information acquisition unit is used for acquiring the grade information of each scheduled terminal device, the data volume information and the priority information of the service data uplink transmitted by each terminal device, the channel parameter information, and the time-frequency resource information and the grade information occupied by each terminal device when the time-frequency resource is allocated last time;
the resource allocation unit is used for allocating time-frequency resources for each terminal device in sequence according to the grade information of each terminal device, the data amount information and the priority information of the service data uplink transmitted by each terminal device, the channel parameter information, the time-frequency resource information and the grade information occupied by each terminal device when the time-frequency resource is allocated last time, so that each terminal device can uplink transmit the service data by using the allocated time-frequency resource;
when time-frequency resources are allocated to each terminal device in turn, the resource allocation unit is further used for reserving the time-frequency resources and storing the time-frequency resources in a resource pool;
when the uplink traffic data volume of the terminal equipment exceeds the set threshold range, the resource allocation unit is further used for allocating reserved time-frequency resources for the terminal equipment of which the uplink traffic data volume exceeds the set threshold range;
When the time-frequency resources are insufficient, the resource allocation unit is further used for allocating reserved time-frequency resources for the terminal equipment which has not completed time-frequency resource allocation in sequence according to the order from high to low of the grades.
6. The apparatus of claim 5, wherein the resource allocation unit is configured to, when allocating time-frequency resources for each terminal device in sequence according to the rank information of each terminal device, the data amount information and the priority information of the service data uplink transmitted by each terminal device, the channel parameter information, the time-frequency resource information occupied by each terminal device when the time-frequency resource is allocated last time, and the rank information:
grouping the terminal devices according to the priority information of the service data transmitted by the terminal devices in the uplink to obtain terminal device groups with different priorities; the priority of the service data of the uplink transmission of the terminal equipment in the same terminal equipment group is the same;
the following operations are respectively executed for each terminal equipment group in turn according to the order of the priority from high to low:
the following operations are respectively executed for each terminal device in the terminal device group in turn according to the order of the grades from high to low:
And distributing time-frequency resources for the terminal equipment according to the data volume information of the service data uplink-transmitted by the terminal equipment, the channel parameter information, the time-frequency resource information occupied by the terminal equipment in the last time of time-frequency resource distribution and the grade information.
7. The apparatus of claim 5, wherein the apparatus further comprises:
the detection unit is used for detecting whether the grades of the terminal equipment are changed in each terminal equipment according to a set period;
and the processing unit is used for distributing reserved time-frequency resources to the terminal equipment with changed grades or distributing time-frequency resources to the terminal equipment in turn when the grades of the terminal equipment are changed.
8. The apparatus according to any of claims 5-7, wherein the resource allocation unit is further configured to:
and sequentially performing adaptive transmission bandwidth processing and time domain elongation processing on the time-frequency resources allocated by the terminal equipment with limited transmitting power in each terminal equipment.
9. A resource allocation apparatus, comprising:
a memory and a processor;
the memory is connected with the processor and used for storing programs;
The processor is configured to implement the following functions by running the program in the memory:
acquiring the grade information of each scheduled terminal device, the data volume information and the priority information of the service data uplink-transmitted by each terminal device, the channel parameter information, and the time-frequency resource information and the grade information occupied by each terminal device when the time-frequency resource is allocated last time; according to the grade information of each terminal device, the data volume information and the priority information of the service data uplink-transmitted by each terminal device, the channel parameter information, the time-frequency resource information occupied by each terminal device when the time-frequency resource is allocated last time and the grade information, time-frequency resources are allocated to each terminal device in sequence, so that each terminal device can uplink-transmit the service data by using the allocated time-frequency resources;
when time-frequency resources are allocated to each terminal device in turn, reserving the time-frequency resources and storing the time-frequency resources in a resource pool;
when the uplink traffic data volume of the terminal equipment exceeds a set threshold range, the reserved time-frequency resource is allocated for the terminal equipment of which the uplink traffic data volume exceeds the set threshold range;
And when the time-frequency resources are insufficient, sequentially distributing reserved time-frequency resources to the terminal equipment which does not complete the time-frequency resource distribution according to the order of the grades from high to low.
10. The apparatus of claim 9, wherein the processor is configured to, when sequentially allocating time-frequency resources to each terminal device according to the class information of each terminal device, the data amount information and the priority information of the service data uplink transmitted by each terminal device, the channel parameter information, the time-frequency resource information occupied by each terminal device when the time-frequency resource is allocated last time, and the class information:
grouping the terminal devices according to the priority information of the service data transmitted by the terminal devices in the uplink to obtain terminal device groups with different priorities; the priority of the service data of the uplink transmission of the terminal equipment in the same terminal equipment group is the same;
the following operations are respectively executed for each terminal equipment group in turn according to the order of the priority from high to low:
the following operations are respectively executed for each terminal device in the terminal device group in turn according to the order of the grades from high to low:
And distributing time-frequency resources for the terminal equipment according to the data volume information of the service data uplink-transmitted by the terminal equipment, the channel parameter information, the time-frequency resource information occupied by the terminal equipment in the last time of time-frequency resource distribution and the grade information.
11. The apparatus of claim 9, wherein the processor is further configured to:
detecting whether the grades of the terminal equipment are changed in each terminal equipment according to a set period; if the grade of the terminal equipment is changed, the reserved time-frequency resources are allocated to the terminal equipment with the changed grade or the time-frequency resources are allocated to the terminal equipment in turn.
12. The apparatus of any one of claims 9-11, wherein the processor is further configured to:
and sequentially performing adaptive transmission bandwidth processing and time domain elongation processing on the time-frequency resources allocated by the terminal equipment with limited transmitting power in each terminal equipment.
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