CN111479322B - Resource allocation method and device - Google Patents

Resource allocation method and device Download PDF

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CN111479322B
CN111479322B CN201910062025.7A CN201910062025A CN111479322B CN 111479322 B CN111479322 B CN 111479322B CN 201910062025 A CN201910062025 A CN 201910062025A CN 111479322 B CN111479322 B CN 111479322B
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resident
target
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CN111479322A (en
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安思麒
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Potevio Information Technology Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H04L5/0057—Physical resource allocation for CQI
    • 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
    • H04W72/563—Allocation or scheduling criteria for wireless resources based on priority criteria of the wireless resources
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

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  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The embodiment of the invention provides a resource allocation method and a device, wherein the method comprises the following steps: acquiring a coverage grade and a service type of a terminal to be accessed; acquiring a target resident sub-band set corresponding to the coverage grade and the service type of the terminal to be accessed according to the resident sub-band set corresponding to each service type in the preset resident sub-band number configured under each coverage grade; a target dwell sub-band is selected from the set of target dwell sub-bands and allocated to the terminal to be accessed. The embodiment of the invention effectively improves the scheduling of multiple users, improves the utilization rate of system resources and reduces the resource conflict among terminals.

Description

Resource allocation method and device
Technical Field
The embodiment of the invention relates to the technical field of communication, in particular to a resource allocation method and device.
Background
In a TD-LTE230 power wireless bandwidth communication system (LTE 230 for short), the transmission of a physical downlink control channel (Physical Downlink Control Channel, PDCCH) is determined by the number of PDCCH repetitions, a periodicity factor, and a starting location offset, which constitute a user specific search space (UE-specific search space, USS). Wherein the USS is configured to the terminal by the base station in a radio resource control (Radio Resource Control, RRC) reconfiguration message. In addition, the base station configures a resident sub-band for the terminal, wherein the base station selects a coverage grade for the terminal according to a channel quality indication (Channel Quality Indicator, CQI) reported by the terminal and allocates the resident sub-band corresponding to the coverage grade.
In addition, in the LTE230 system, the common USS configuration method is that the repetition number of the PDCCH is determined by the channel quality reported by the terminal, the PDCCH period factor is determined by the service type of the terminal, and the offset of the PDCCH is set randomly; the resident sub-bands are randomly selected from the sub-band set according to the coverage level corresponding to the channel quality, so that the coverage level of the terminals resident on the same sub-band is the same, and the PDCCH repetition times may be the same. At this time, when the number of repetitions is greater than 1, since the PDCCH period is different, even if the starting position offset value of the PDCCH is randomly set, the probability of PDCCH transmission time collision between terminals residing on the same subband is relatively large. In addition, since PDCCH initial radio frames are different from each other, when the terminal with the front initial time schedules the occupied sub-band, the terminal with the rear initial time cannot schedule smoothly, even if the priority of the rear initial time is higher than the priority of the front initial time, and when the number of users on the residing sub-band is large, the phenomenon is particularly obvious, and part of users cannot be scheduled all the time, so that the system performance and user experience are affected.
In summary, in the prior art, when multi-user scheduling is performed, a part of users cannot be scheduled, and the probability of resource conflict between terminals is high.
Disclosure of Invention
The embodiment of the invention provides a resource allocation method and a resource allocation device, which are used for solving the problems that in the prior art, partial users cannot be scheduled and the probability of resource conflict among terminals is high when a plurality of users are scheduled.
In order to solve the above problem, in a first aspect, an embodiment of the present invention provides a resource allocation method, where the method includes:
acquiring a coverage grade and a service type of a terminal to be accessed;
acquiring a target resident sub-band set corresponding to the coverage grade and the service type of the terminal to be accessed according to the resident sub-band set corresponding to each service type in the preset resident sub-band number configured under each coverage grade;
a target dwell sub-band is selected from the set of target dwell sub-bands and allocated to the terminal to be accessed.
In a second aspect, an embodiment of the present invention provides a resource allocation apparatus, where the apparatus includes:
the first acquisition module is used for acquiring the coverage grade and the service type of the terminal to be accessed;
the second acquisition module is used for acquiring a target resident sub-band set corresponding to the coverage grade and the service type of the terminal to be accessed according to the resident sub-band set corresponding to each service type in the resident sub-band number configured under each coverage grade acquired in advance;
a first allocation module, configured to select a target camping subband from the target camping subband set, and allocate the target camping subband to the terminal to be accessed.
In a third aspect, an embodiment of the present invention provides an electronic device, including a memory, a processor, and a computer program stored on the memory and executable on the processor, where the processor implements the steps of the resource allocation method when executing the computer program.
In a fourth aspect, embodiments of the present invention provide a non-transitory computer readable storage medium having stored thereon a computer program which, when executed by a processor, implements the steps of the resource allocation method.
According to the resource allocation method and device provided by the embodiment of the invention, the target resident sub-band set corresponding to the coverage grade and the service type of the terminal to be accessed is obtained according to the resident sub-band set configured under each coverage grade, which is obtained in advance, and the target resident sub-band allocated to the terminal to be accessed is selected from the target resident sub-band set, and the PDCCH periodic factor is determined by the service type based on the coverage grade and the PDCCH repetition frequency according to the channel quality, so that the channel quality of the terminals allocated on the same target resident sub-band set is similar and the service type is the same, and the same PDCCH repetition frequency and periodic factor can be allocated, thereby effectively avoiding the situation that part of users cannot obtain scheduling when in multi-user, effectively improving the scheduling when in multi-user, improving the system resource utilization rate and reducing the resource conflict between the terminals.
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In order to more clearly illustrate the embodiments of the present invention or the technical solutions of the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a flow chart showing steps of a resource allocation method in an embodiment of the present invention;
FIG. 2 is a block diagram of a resource allocation device according to an embodiment of the present invention;
fig. 3 is a schematic diagram of an entity structure of an electronic device according to an embodiment of the present invention.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. 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.
As shown in fig. 1, a flowchart of steps of a resource allocation method in an embodiment of the present invention is shown, where the method includes the following steps:
step 101: and acquiring the coverage grade and the service type of the terminal to be accessed.
In this step, specifically, the base station may select a coverage level for the terminal to be accessed according to a Channel Quality Indicator (CQI) reported by the terminal to be accessed.
In addition, in particular, the traffic type of the terminal to be accessed may be determined according to a class of service identifier (QCI) class; wherein the LTE230 system supports 6 QCI classes, and each QCI class corresponds to one service type, e.g., QCI2 corresponds to two classes of service, QCI3 corresponds to three classes of service, and QCI5 corresponds to one class of service.
Step 102: and acquiring a target resident sub-band set corresponding to the coverage grade and the service type of the terminal to be accessed according to the resident sub-band set corresponding to each service type in the preset resident sub-band number configured under each coverage grade.
In this step, specifically, after the coverage class and the service type of the terminal to be accessed are obtained, a target resident sub-band set corresponding to the coverage class and the service type of the terminal to be accessed can be obtained according to the resident sub-band set corresponding to each service type in the resident sub-bands configured under each coverage class obtained in advance, so that the PDCCH repetition times and the PDCCH period factor of the terminal accessed to the same target resident sub-band set are the same, and further, the resource conflict between terminals accessed to the same resident sub-band is effectively reduced.
Among the number of resident subbands configured under each coverage level acquired in advance, when acquiring the target resident subband set corresponding to the coverage level and the service type of the terminal to be accessed, the resident subband set corresponding to each service type needs to be acquired first from the number of resident subbands configured under each coverage level.
Specifically, in acquiring the number of resident subbands configured under each coverage level, when the resident subband set corresponding to each service type is acquired, the number of resident subbands configured for the coverage level in advance may be acquired for each coverage level; then obtaining the user number proportion corresponding to each service type in N service types; wherein N is a positive integer greater than 1; and dividing the number of the resident sub-bands configured for the coverage level according to the user number proportion corresponding to each service type to obtain N sets, and correspondingly determining each set in the N sets as the resident sub-band set corresponding to each service type.
This will be described below.
Specifically, the number of resident subbands of the same coverage level may be divided according to the service type; when dividing according to service types, the division may be performed according to the user number proportion corresponding to each service type planned by the LTE230 system. In addition, specifically, the QCI class corresponds to the service type, and because the QCI2, the QCI3 and the QCI5 respectively control the two-class, the three-class and the one-class services, there is a special resident subband, that is, the resident subband number of the same coverage class does not need to be divided into sets of 3 subbands in consideration of the two-class, the three-class and the one-class services, so that the resident subband number under each coverage class only needs to be divided into sets of 3 subbands, that is, the value of N is 3. This is illustrated herein.
Assuming that the number of resident subbands configured for the coverage class a is a, the N service types include a first service type, a second service type, and a third service type, and the ratio of the number of users between the first service type, the second service type, and the third service type is a1: a2: a3. at this time, when dividing the number of resident subbands a configured by the coverage class a according to the proportion of the number of users between the first service type, the second service type and the third service type, the ratio a1 may be: a2: a3, obtaining 3 sets, wherein the number of resident sub-bands in each set in the 3 sets is a1/a, a2/a and a3/a in sequence, at the moment, the number of resident sub-bands in the resident sub-band set corresponding to the first service type is a1/a, the number of resident sub-bands in the resident sub-band set corresponding to the second service type is a2/a, and the number of resident sub-bands in the resident sub-band set corresponding to the third service type is a3/a.
In this way, the resident sub-band number of the same coverage level is divided into a plurality of resident sub-band sets according to the service type, so that when the resident sub-band is allocated to the terminal to be accessed, the target resident sub-band set corresponding to the coverage level and the service type of the terminal to be accessed can be preferentially selected, and the terminals allocated on the same resident sub-band set can be allocated with the same PDCCH repetition times and PDCCH periodic factors due to similar channel quality and same service type, thereby greatly reducing resource conflict among the terminals and effectively improving the scheduling of multiple users.
Step 103: a target dwell sub-band is selected from the set of target dwell sub-bands and allocated to the terminal to be accessed.
In this step, specifically, after acquiring the target resident sub-band set corresponding to the coverage class and the service type of the terminal to be accessed, the target resident sub-band may be selected from the target resident sub-band set, and the target resident sub-band may be allocated to the terminal to be accessed.
In this embodiment, when selecting a target resident sub-band from the target resident sub-band set, a sub-band with the least number of current resident terminals may be selected from the target resident sub-band set, and the sub-band with the least number of current resident terminals may be determined as the target resident sub-band. This enables efficient avoidance of resource conflicts between the terminal to be accessed and the terminals already camped on the target camping sub-band.
Specifically, it should be noted that after determining the resident subband set corresponding to each service type in the resident subband numbers configured under each coverage level, the resident terminal numbers under all coverage levels may be initialized to 0, and the access terminals in the system may be waited for to allocate resources.
In this way, in the present embodiment, according to the number of residence subbands configured under each coverage level acquired in advance, the target residence subband set corresponding to the coverage level and the service type of the terminal to be accessed is acquired according to the residence subband set corresponding to each service type, and the target residence subbands allocated to the terminal to be accessed are selected from the target residence subband sets, so that the terminal channel quality allocated to the same target residence subband set is similar and the service types are the same, and the same PDCCH repetition times and cycle factors can be allocated, thereby effectively avoiding the situation that part of users cannot be scheduled when multiple users are involved, effectively improving the scheduling when multiple users, improving the utilization rate of system resources, and reducing the resource conflict between terminals.
Further, in the embodiment of the present invention, while the target camping sub-band is allocated to the terminal to be accessed, a target offset value needs to be allocated to the terminal to be accessed, so that the terminal to be accessed can avoid resource conflict with the terminal already camping on the target camping sub-band when accessing to the target camping sub-band.
The assignment of the target offset value to the terminal to be accessed is described below.
Specifically, in the number of residence subbands configured according to each coverage level acquired in advance, after acquiring the target residence subband set corresponding to the coverage level and the service type of the terminal to be accessed, the method further includes the following steps:
step D1: and acquiring a target available PDCCH offset value set corresponding to the target resident sub-band set according to a preset corresponding relation between each resident sub-band set and the available physical downlink control channel PDCCH offset value set.
In this step, specifically, after the target resident subband set is obtained, a target available PDCCH offset value set corresponding to the target resident subband set may be obtained according to a preset correspondence between each resident subband set and the available PDCCH offset value set, so that a target offset value may be selected from the target available PDCCH offset value set, so that a resource conflict with other terminals may be avoided when the terminal to be accessed accesses the target resident subband.
Before acquiring the target available PDCCH offset value set corresponding to the target resident subband set according to the preset corresponding relation between each resident subband set and the available PDCCH offset value set acquired in advance, the available PDCCH offset value set corresponding to each resident subband set needs to be acquired, so as to obtain the preset corresponding relation between each resident subband set and the available PDCCH offset value set.
Specifically, when acquiring an available PDCCH offset value set corresponding to each resident subband set, a plurality of preset candidate offset values may be acquired, where the plurality of candidate offset values include 0, 1/8, 1/4, 3/8 and 2/1; then, for each resident sub-band set, determining 0 in a plurality of offset values to be selected as an available PDCCH offset value corresponding to the resident sub-band set; traversing the rest offset values except 0 in the plurality of offset values in sequence, and calculating the difference value between the starting time in the PDCCH period corresponding to the traversed offset value to be selected and the reference starting time corresponding to the offset value to be selected; and when the difference value is larger than the PDCCH repetition times corresponding to the resident sub-band set, determining the traversed candidate offset value as an available PDCCH offset value.
The reference starting time corresponding to the first traversed candidate offset value is zero, and the reference starting time corresponding to the other sequentially traversed candidate offset values is the starting time in the PDCCH period corresponding to the last candidate offset value determined as the available PDCCH offset value.
In addition, the PDCCH period is the product of the PDCCH repetition number corresponding to the resident sub-band set and a PDCCH period factor; and the PDCCH repetition times and the PDCCH period factors corresponding to the resident sub-band set are determined according to the PDCCH repetition times corresponding to each preset coverage level and the PDCCH period factors corresponding to each service type.
In addition, the starting time in the PDCCH period corresponding to the offset value to be selected is the product of the PDCCH period and the offset value to be selected.
The above-described process is explained below.
Specifically, the certain order may be an order from small to large among the plurality of offset values to be selected.
In addition, specifically, since the PDCCH repetition number and the coverage level are both determined by the channel quality, and the PDCCH period factor is determined by the service type, the PDCCH repetition number corresponding to each coverage level and the PDCCH period factor corresponding to each service type can be configured, so that the PDCCH repetition number and the PDCCH period factor corresponding to each dwell subband set can be determined, and further, the PDCCH period corresponding to each dwell subband set can be calculated.
It should be noted that the present embodiment may be applied to a scenario when the PDCCH repetition number is greater than 1.
Further, the procedure for determining the available PDCCH offset value is as follows:
specifically, for each dwell subband set, first, determining the offset value 0 to be selected as the available PDCCH offset value corresponding to the dwell subband set, and calculating the start time in the PDCCH period corresponding to the offset value 0 to be selected, where the start time in the PDCCH period corresponding to the offset value 0 to be selected is the product of the PDCCH period and the offset value 0 to be selected, that is, 0.
Then traversing the rest offset values in sequence from small to large, wherein the traversed offset value to be selected is 1/8, and calculating the difference between the starting time in the PDCCH period corresponding to the offset value to be selected 1/8 and the reference starting time 0 corresponding to the offset value to be selected, namely calculating the difference between the starting time in the PDCCH period corresponding to the offset value to be selected 1/8 and the starting time in the PDCCH period corresponding to the offset value to be selected 0 which is determined as the available PDCCH offset value; specifically, when detecting that the difference is greater than the PDCCH repetition number corresponding to the resident subband set, determining that no scheduling failure is caused, and determining a candidate offset value 1/8 as an available PDCCH offset value; of course, it should be noted that, if the difference is detected to be less than or equal to the PDCCH repetition number corresponding to the resident subband set, it is considered that a situation that scheduling cannot be performed may be caused, and the candidate offset value 1/8 is determined as the unavailable PDCCH offset value.
And traversing to the offset value 1/4 according to the traversing sequence, and calculating the difference between the starting time in the PDCCH period corresponding to the offset value 1/4 to be selected and the reference starting time corresponding to the offset value to be selected, namely calculating the difference between the starting time in the PDCCH period corresponding to the offset value 1/4 to be selected and the starting time in the PDCCH period corresponding to the offset value to be selected which is determined to be the available PDCCH offset value. If the offset value 1/8 to be selected is determined to be the available PDCCH offset value, the reference starting time corresponding to the offset value 1/4 to be selected is the starting time in the PDCCH period corresponding to the offset value 1/8 to be selected; if the candidate offset value 1/8 is not determined as the available PDCCH offset value, the reference starting time corresponding to the candidate offset value 1/4 is 0. In addition, specifically, when detecting that the difference is greater than the PDCCH repetition number corresponding to the resident subband set, determining that the scheduling failure is not caused, and determining the offset value 1/4 to be selected as an available PDCCH offset value; of course, if the difference is detected to be less than or equal to the PDCCH repetition number corresponding to the resident subband set, it is considered that the scheduling failure may be caused, and the candidate offset value 1/4 is determined as the unavailable PDCCH offset value.
Thus, by analogy in the above manner, the available PDCCH offset value can be selected from a plurality of pre-configured candidate offset values, and then the available PDCCH offset value set corresponding to each resident subband set is obtained. Based on the available PDCCH offset value set corresponding to each resident sub-band set, the interval step between each available PDCCH offset value and the adjacent available PDCCH offset value is larger than the PDCCH repetition number corresponding to the resident sub-band set, the channel quality of the terminals combined on the same resident sub-band set is similar, the service types are the same, namely the PDCCH repetition number of the terminals on the same resident sub-band set is the same as the PDCCH periodic factor, so that the problem that PDCCH sending time between the terminals resident on the same sub-band conflicts with each other is avoided, the problem that part of users cannot be scheduled all the time when the number of users on the resident sub-band is more is avoided, the resource conflict between the terminals is reduced, and the utilization rate of system resources is improved.
Step D2: a target offset value is selected from the set of target available PDCCH offset values and assigned to the terminal to be accessed.
In this step, specifically, after the set of target available PDCCH offset values is obtained, a target offset value may be selected from the set of target available PDCCH offset values, and the target offset value is allocated to the terminal to be accessed, so that when the terminal to be accessed accesses the target residence sub-band according to the target offset value, resource collision with other terminals can be avoided.
Specifically, when a target offset value is selected from a set of target available PDCCH offset values, an available PDCCH offset value with the smallest allocated number of times may be selected from the set of target available PDCCH offset values, and the available PDCCH offset value with the smallest allocated number of times may be determined as the target offset value.
It should be noted that, after the available PDCCH offset value set corresponding to each dwell subband set is obtained, the allocation number of the available PDCCH offset values in the available PDCCH offset value set corresponding to each dwell subband set may be initialized to be 0, and the access terminal waits for the allocation of resources in the system.
In this way, the embodiment is based on that the channel quality of the terminals on the same target resident sub-band set is similar and the service types are the same, that is, the PDCCH repetition times and PDCCH period factors of the terminals on the same target resident sub-band set are the same, and the interval steps of the starting times in the PDCCH periods under different available PDCCH offset values in the available PDCCH offset value set are larger than the PDCCH repetition times, so that the problem that the PDCCH transmission times conflict with each other between the terminals on the same sub-band is avoided, the problem that part of users cannot be scheduled all the time when the number of users on the resident sub-band is more is avoided, the resource conflict between the terminals is reduced, and the utilization rate of system resources is improved.
In addition, as shown in fig. 2, a block diagram of a resource allocation apparatus according to an embodiment of the present invention includes:
a first obtaining module 201, configured to obtain a coverage class and a service type of a terminal to be accessed;
a second obtaining module 202, configured to obtain a target resident subband set corresponding to the coverage class and the service type of the terminal to be accessed according to the resident subband set corresponding to each service type in the resident subband number configured under each coverage class acquired in advance;
a first allocation module 203, configured to select a target camping subband from the target camping subband set, and allocate the target camping subband to the terminal to be accessed.
Optionally, the apparatus further comprises:
a third obtaining module, configured to obtain a resident subband set corresponding to each service type in the resident subband number configured under each coverage level; wherein,,
the third acquisition module includes:
a first acquisition unit configured to acquire, for each coverage class, a number of resident subbands configured in advance for the coverage class;
the second acquisition unit is used for acquiring the user number proportion corresponding to each service type in the N service types; wherein N is a positive integer greater than 1;
and the third acquisition unit is used for dividing the resident sub-band number configured for the coverage grade according to the user number proportion corresponding to each service type to obtain N sets, and correspondingly determining each set in the N sets as the resident sub-band set corresponding to each service type.
Optionally, the first allocation module 203 is configured to select a subband with the smallest number of current residing terminals from the target residing subband set, and determine the subband with the smallest number of current residing terminals as the target residing subband.
Optionally, the apparatus further comprises:
a fourth obtaining module, configured to obtain a target available PDCCH offset value set corresponding to the target resident subband set according to a preset correspondence between each resident subband set and an available physical downlink control channel PDCCH offset value set obtained in advance;
and a second allocation module, configured to select a target offset value from the set of target available PDCCH offset values, and allocate the target offset value to the terminal to be accessed.
Optionally, the apparatus further comprises:
a fifth obtaining module, configured to obtain an available PDCCH offset value set corresponding to each resident subband set; wherein,,
the fifth acquisition module includes:
a fourth obtaining unit, configured to obtain a plurality of preset offset values to be selected, where the plurality of offset values to be selected include 0, 1/8, 1/4, 3/8, and 2/1;
a first determining unit, configured to determine, for each dwell subband set, 0 in a plurality of candidate offset values as an available PDCCH offset value corresponding to the dwell subband set;
the calculating unit is used for traversing the rest offset values except 0 in the plurality of offset values to be selected in sequence according to a certain sequence, and calculating the difference value between the starting time in the PDCCH period corresponding to the traversed offset value to be selected and the reference starting time corresponding to the offset value to be selected;
a second determining unit, configured to determine the traversed candidate offset value as an available PDCCH offset value when the difference value is greater than the PDCCH repetition number corresponding to the resident subband set; wherein,,
the reference initial time corresponding to the first traversed offset value to be selected is zero, and the reference initial time corresponding to the other sequentially traversed offset values to be selected is the initial time in the PDCCH period corresponding to the last offset value to be selected which is determined as the available PDCCH offset value;
the PDCCH period is the product of the PDCCH repetition times corresponding to the resident sub-band set and a PDCCH period factor; the PDCCH repetition times and the PDCCH periodic factors corresponding to the resident sub-band set are determined according to the PDCCH repetition times corresponding to each preset coverage level and the PDCCH periodic factors corresponding to each service type;
and the starting time in the PDCCH period corresponding to the offset value to be selected is the product of the PDCCH period and the offset value to be selected.
Optionally, the second allocation module is configured to select an available PDCCH offset value with the smallest allocated number from the target available PDCCH offset value set, and determine the available PDCCH offset value with the smallest allocated number as the target offset value.
According to the resource allocation device provided by the embodiment, the target resident sub-band set corresponding to the coverage grade and the service type of the terminal to be accessed is obtained according to the resident sub-band set configured under each coverage grade obtained in advance, the target resident sub-band set corresponding to the coverage grade and the service type of the terminal to be accessed is selected from the target resident sub-band set, the target resident sub-band allocated to the terminal to be accessed is determined according to the channel quality based on the coverage grade and the PDCCH repetition frequency, the PDCCH periodic factor is determined by the service type, so that the channel quality of the terminals allocated on the same target resident sub-band set is similar and the service type is the same, and the same PDCCH repetition frequency and periodic factor can be allocated, thereby effectively avoiding the situation that part of users cannot be scheduled when a plurality of users are avoided, effectively improving the scheduling when the users are scheduled, improving the system resource utilization rate and reducing the resource conflict among the terminals.
In addition, as shown in fig. 3, an entity structure schematic diagram of an electronic device according to an embodiment of the present invention may include: processor 310, communication interface (Communications Interface) 320, memory 330 and communication bus 340, wherein processor 310, communication interface 320, memory 330 accomplish communication with each other through communication bus 340. The processor 310 may invoke a computer program stored in the memory 330 and executable on the processor 310 to perform the methods provided by the above embodiments, including, for example: acquiring a coverage grade and a service type of a terminal to be accessed; acquiring a target resident sub-band set corresponding to the coverage grade and the service type of the terminal to be accessed according to the resident sub-band set corresponding to each service type in the preset resident sub-band number configured under each coverage grade; a target dwell sub-band is selected from the set of target dwell sub-bands and allocated to the terminal to be accessed.
Further, the logic instructions in the memory 330 described above may be implemented in the form of software functional units and may be stored in a computer-readable storage medium when sold or used as a stand-alone product. Based on this understanding, the technical solution of the present invention may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution, in the form of a software product stored in a storage medium, comprising several instructions for causing a computer device (which may be a personal computer, a server, a network device, etc.) to perform all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a magnetic disk, or an optical disk, or other various media capable of storing program codes.
Embodiments of the present invention also provide a non-transitory computer readable storage medium having stored thereon a computer program which, when executed by a processor, is implemented to perform the methods provided by the above embodiments, for example, comprising: acquiring a coverage grade and a service type of a terminal to be accessed; acquiring a target resident sub-band set corresponding to the coverage grade and the service type of the terminal to be accessed according to the resident sub-band set corresponding to each service type in the preset resident sub-band number configured under each coverage grade; a target dwell sub-band is selected from the set of target dwell sub-bands and allocated to the terminal to be accessed.
The apparatus embodiments described above are merely illustrative, wherein the elements illustrated as separate elements may or may not be physically separate, and the elements shown as elements may or may not be physical elements, may be located in one place, or may be distributed over a plurality of network elements. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment. Those of ordinary skill in the art will understand and implement the present invention without undue burden.
From the above description of the embodiments, it will be apparent to those skilled in the art that the embodiments may be implemented by means of software plus necessary general hardware platforms, or of course may be implemented by means of hardware. Based on this understanding, the foregoing technical solution may be embodied essentially or in a part contributing to the prior art in the form of a software product, which may be stored in a computer readable storage medium, such as ROM/RAM, a magnetic disk, an optical disk, etc., including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the method described in the respective embodiments or some parts of the embodiments.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims (8)

1. A method of resource allocation, the method comprising:
acquiring a coverage grade and a service type of a terminal to be accessed;
acquiring a target resident sub-band set corresponding to the coverage grade and the service type of the terminal to be accessed according to the resident sub-band set corresponding to each service type in the preset resident sub-band number configured under each coverage grade;
selecting a target resident sub-band from the target resident sub-band set, and distributing the target resident sub-band to the terminal to be accessed;
the method further comprises the steps of:
acquiring a resident sub-band set corresponding to each service type in the number of resident sub-bands configured under each coverage level; wherein,,
the obtaining the resident sub-band set corresponding to each service type in the resident sub-band number configured under each coverage level includes:
for each coverage level, acquiring the resident sub-band number configured for the coverage level in advance;
acquiring the user number proportion corresponding to each service type in N service types; wherein N is a positive integer greater than 1;
dividing the number of resident sub-bands configured for the coverage level according to the proportion of the number of users corresponding to each service type to obtain N sets, and correspondingly determining each set in the N sets as the resident sub-band set corresponding to each service type.
2. The method of claim 1, wherein the selecting a target resident sub-band from the set of target resident sub-bands comprises:
and selecting a sub-band with the least number of current resident terminals from the target resident sub-band set, and determining the sub-band with the least number of the current resident terminals as the target resident sub-band.
3. The method of claim 1, wherein the acquiring the target set of residing subbands corresponding to the coverage class and the service type of the terminal to be accessed from the set of residing subbands corresponding to each service type in the number of residing subbands configured for each coverage class acquired in advance further comprises:
acquiring a target available PDCCH offset value set corresponding to the target resident sub-band set according to a preset corresponding relation between each resident sub-band set and the available physical downlink control channel PDCCH offset value set acquired in advance;
a target offset value is selected from the set of target available PDCCH offset values and assigned to the terminal to be accessed.
4. The method of claim 3, wherein before the obtaining the target available PDCCH offset value set corresponding to the target dwell subband set according to a preset correspondence between each dwell subband set and the available physical downlink control channel PDCCH offset value set, the method further comprises:
acquiring an available PDCCH offset value set corresponding to each resident sub-band set; wherein,,
the obtaining the available PDCCH offset value set corresponding to each resident subband set includes:
obtaining a plurality of preset offset values to be selected, wherein the offset values to be selected comprise 0, 1/8, 1/4, 3/8 and 2/1;
for each resident sub-band set, determining 0 in a plurality of offset values to be selected as an available PDCCH offset value corresponding to the resident sub-band set;
traversing the rest of the plurality of offset values except 0 in sequence, and calculating the difference value between the starting time in the PDCCH period corresponding to the traversed offset value to be selected and the reference starting time corresponding to the offset value to be selected;
when the difference value is larger than the PDCCH repetition times corresponding to the resident sub-band set, determining the traversed offset value to be selected as an available PDCCH offset value; wherein,,
the reference initial time corresponding to the first traversed offset value to be selected is zero, and the reference initial time corresponding to the other sequentially traversed offset values to be selected is the initial time in the PDCCH period corresponding to the last offset value to be selected which is determined as the available PDCCH offset value;
the PDCCH period is the product of the PDCCH repetition times corresponding to the resident sub-band set and a PDCCH period factor; the PDCCH repetition times and the PDCCH periodic factors corresponding to the resident sub-band set are determined according to the PDCCH repetition times corresponding to each preset coverage level and the PDCCH periodic factors corresponding to each service type;
and the starting time in the PDCCH period corresponding to the offset value to be selected is the product of the PDCCH period and the offset value to be selected.
5. The method of claim 3, wherein the selecting a target offset value from the set of target available PDCCH offset values comprises:
and selecting the available PDCCH offset value with the least allocated times from the target available PDCCH offset value set, and determining the available PDCCH offset value with the least allocated times as the target offset value.
6. A resource allocation apparatus, the apparatus comprising:
the first acquisition module is used for acquiring the coverage grade and the service type of the terminal to be accessed;
the second acquisition module is used for acquiring a target resident sub-band set corresponding to the coverage grade and the service type of the terminal to be accessed according to the resident sub-band set corresponding to each service type in the resident sub-band number configured under each coverage grade acquired in advance;
a first allocation module, configured to select a target residence sub-band from the target residence sub-band set, and allocate the target residence sub-band to the terminal to be accessed;
the apparatus further comprises:
a third obtaining module, configured to obtain a resident subband set corresponding to each service type in the resident subband number configured under each coverage level; wherein,,
the third acquisition module includes:
a first acquisition unit configured to acquire, for each coverage class, a number of resident subbands configured in advance for the coverage class;
the second acquisition unit is used for acquiring the user number proportion corresponding to each service type in the N service types; wherein N is a positive integer greater than 1;
and the third acquisition unit is used for dividing the resident sub-band number configured for the coverage grade according to the user number proportion corresponding to each service type to obtain N sets, and correspondingly determining each set in the N sets as the resident sub-band set corresponding to each service type.
7. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the processor implements the steps of the resource allocation method according to any one of claims 1 to 5 when the computer program is executed by the processor.
8. A non-transitory computer readable storage medium having stored thereon a computer program, which when executed by a processor performs the steps of the resource allocation method according to any of claims 1 to 5.
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