CN112188500A - Dynamic allocation method and device for frequency spectrum resources - Google Patents
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Abstract
The embodiment of the invention provides a method and a device for dynamically allocating spectrum resources, wherein the method comprises the following steps: acquiring a sub-band resource list to be allocated and a priority queue of a user, wherein the sub-band resource list to be allocated comprises an idle service sub-band and an idle resident sub-band; and sequentially scheduling resources for the users according to the priority queue sequence of the users, in the resource scheduling process, if a first user uses a resident sub-band to perform service, allocating the idle service sub-band to the first user, and if no idle service sub-band exists in the sub-band resource list to be allocated, allocating the idle resident sub-band to the first user. According to the method and the device for dynamically allocating the frequency spectrum resources, provided by the embodiment of the invention, the idle resident sub-band is used for providing the user service, so that the utilization rate of the sub-band is improved and the time delay is reduced while the access and other resident users initiating the service under the resident sub-band are not influenced.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a method and an apparatus for dynamically allocating spectrum resources.
Background
In the LTE-G system, the subband resources are limited, users are more, and particularly, the number of terminals for collecting services by using QCI4 is more. The subband types in the LTE-G protocol are divided into a resident subband, a service subband, a negative control subband, a fine control subband and the like, for the QCI4 acquisition service with the largest quantity, the business process can be carried out only by using two subbands of the resident subband and the service subband, so that how to efficiently utilize the two subbands provides more resources for system operation, and the performance of the whole system is greatly influenced.
A subband may be defined in the prior art as both a camping subband and an access subband. When the user is used as a resident sub-band, a plurality of users can be simultaneously used as resident users under the resident sub-band according to the configured resident factors; when the sub-band is accessed, in order to meet the access conditions such as the Msg2 timer and the like, rapid allocation is needed in the access process, and users can share the sub-band; when the authorization information is sent as a resident sub-band, when the terminal is switched from the resident state to the working authorized sub-band, the terminal needs to be switched out quickly, the service initiation process of other resident users cannot be influenced, otherwise, scheduling of other users is blocked, and the problems of packet loss and the like of the service are caused.
Due to the complexity of mixed usage of the resident sub-band and the service sub-band in the prior art, the existing algorithm only uses the resident sub-band without any resident user for the service process. However, a large number of resident sub-bands are configured in the system as a sub-band resource, and when no resident user initiates a service as an authorized sub-band, the idle condition and the waste can exist, which causes a low utilization rate of the sub-band resource of the system. Therefore, a new dynamic allocation method of spectrum resources is needed to solve the above problems.
Disclosure of Invention
In order to solve the above problems, embodiments of the present invention provide a method and an apparatus for dynamically allocating spectrum resources, which overcome the above problems or at least partially solve the above problems.
In a first aspect, an embodiment of the present invention provides a method for dynamically allocating spectrum resources, including:
acquiring a sub-band resource list to be allocated and a priority queue of a user, wherein the sub-band resource list to be allocated comprises an idle service sub-band and an idle resident sub-band;
and sequentially scheduling resources for the users according to the priority queue sequence of the users, in the resource scheduling process, if a first user uses a resident sub-band to perform service, allocating the idle service sub-band to the first user, and if no idle service sub-band exists in the sub-band resource list to be allocated, allocating the idle resident sub-band to the first user.
Wherein the method further comprises:
and adding an idle resident sub-band with the resident user number greater than or equal to a preset resident sub-band screening threshold into the tail part of the sub-band resource list to be distributed.
Wherein the method further comprises:
and adjusting the size of the resident sub-band screening threshold in real time according to the result of the resident sub-band resource allocation of the signaling Msg 3.
After the resources are sequentially scheduled for the users according to the priority queue order of the users, the method further comprises the following steps:
and updating the service identification information of each successfully scheduled user, wherein the service identification information is used for identifying whether the user works by using the resident sub-band or the service sub-band.
Wherein, if there is no idle service sub-band in the sub-band resource list to be allocated, allocating the idle resident sub-band to the first user, specifically including:
if no idle service sub-band exists in the sub-band resource list to be allocated, detecting the service type of the first user;
and if the service type of the first user meets the condition of the QCI4 type, allocating the idle resident sub-band to the first user.
Second aspect, an embodiment of the present invention further provides a device for dynamically allocating spectrum resources, including:
the system comprises a pre-scheduling module, a scheduling module and a scheduling module, wherein the pre-scheduling module is used for acquiring a sub-band resource list to be allocated and a priority queue of a user, and the sub-band resource list to be allocated comprises an idle service sub-band and an idle resident sub-band;
and the scheduling module is used for sequentially scheduling resources for the users according to the priority queue sequence of the users, and in the resource scheduling process, if a first user is using a resident sub-band for service, the idle service sub-band is allocated to the first user, and if no idle service sub-band exists in the sub-band resource list to be allocated, the idle resident sub-band is allocated to the first user.
Third aspect an embodiment of the present invention provides an electronic device, including:
a processor, a memory, a communication interface, and a bus; the processor, the memory and the communication interface complete mutual communication through the bus; the memory stores program instructions executable by the processor, and the processor calls the program instructions to execute the above dynamic spectrum resource allocation method.
In a fourth aspect, an embodiment of the present invention provides a non-transitory computer-readable storage medium, which stores computer instructions, the computer instructions causing the computer to execute the above-mentioned method for dynamically allocating spectrum resources.
According to the method and the device for dynamically allocating the frequency spectrum resources, provided by the embodiment of the invention, the idle resident sub-band is used for providing the user service, so that the utilization rate of the sub-band is improved and the time delay is reduced while the access and other resident users initiating the service under the resident sub-band are not influenced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
Fig. 1 is a schematic flow chart of a method for dynamically allocating spectrum resources according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a dynamic spectrum resource allocation apparatus according to an embodiment of the present invention;
fig. 3 is a block diagram of an electronic device according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments, but not all embodiments, of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Fig. 1 is a schematic flow chart of a method for dynamically allocating spectrum resources according to an embodiment of the present invention, as shown in fig. 1, including:
101. acquiring a sub-band resource list to be allocated and a priority queue of a user, wherein the sub-band resource list to be allocated comprises an idle service sub-band and an idle resident sub-band;
102. and sequentially scheduling resources for the users according to the priority queue sequence of the users, in the resource scheduling process, if a first user uses a resident sub-band to perform service, allocating the idle service sub-band to the first user, and if no idle service sub-band exists in the sub-band resource list to be allocated, allocating the idle resident sub-band to the first user.
It should be noted that the resource allocation scheme provided in the embodiment of the present invention mainly aims at an application scenario of using the resource of the subband residing in the LTE-G system, and is substantially resource scheduling for each user needing to perform a service.
Specifically, in step 101, the embodiment of the present invention performs pre-scheduling on resources, where the pre-scheduling mainly includes two aspects, and in the first aspect, the embodiment of the present invention determines a to-be-allocated subband resource list capable of performing subband resource allocation at this time, where the list includes an idle subband, and an idle subband, which is a subband capable of performing service scheduling and pre-selected according to a load condition of the subband, in the embodiment of the present invention. In the second aspect, the embodiment of the present invention determines the priority order of user scheduling at this time, that is, the priority queue of the user in the embodiment of the present invention, and specifically, in order to enable a user doing a service in a persistent subband not to block other persistent users in the persistent subband from performing a service, the embodiment of the present invention preferably treats a user who is using the persistent subband as the highest scheduling priority among non-precision-controlled users.
Further, in step 102, after the pre-scheduling is completed, the embodiment of the present invention sequentially schedules each user according to the scheduling order of the users in the priority queue, and the scheduling process is a process of allocating working sub-bands to the users. In the embodiment of the invention, the user using the resident sub-band as service is the highest scheduling priority in the non-precision control users, and then the embodiment of the invention allocates idle service sub-bands for the user as much as possible during scheduling of the user, so that the user can not occupy resident sub-band resources. It can be understood that, in the scheduling process, each idle sub-band is allocated to the user in sequence from the sub-band resource list to be allocated, and then the number of idle service sub-bands may be insufficient, and at this time, no idle service sub-band can be allocated to the user, and then the idle resident sub-band included in the sub-band resource list to be allocated is preferably allocated to the user for service, so as to improve the sub-band utilization rate. It should be noted that users who are using the parked sub-band for service are the key targets of the embodiments of the present invention, and they need to be able to switch to the service sub-band as much as possible for working, so for users who have not allocated a sub-band, it is also the same that an idle service sub-band is preferentially allocated, and when an idle service sub-band is insufficient, an idle parked sub-band is reallocated, which is not described in detail for the embodiments of the present invention.
According to the method for dynamically allocating the frequency spectrum resources, provided by the embodiment of the invention, the idle resident sub-band is used for providing the user service, so that the utilization rate of the sub-band is improved and the time delay is reduced while the access and other resident users initiating the service under the resident sub-band are not influenced.
On the basis of the above embodiment, the method further includes:
and adding an idle resident sub-band with the resident user number greater than or equal to a preset resident sub-band screening threshold into the tail part of the sub-band resource list to be distributed.
As can be seen from the content of the foregoing embodiment, in the pre-scheduling process, the embodiment of the present invention obtains the list of the sub-band resources to be allocated, which can be allocated at this time. The sub-band resource list to be allocated comprises an idle service sub-band and an idle resident sub-band.
Specifically, the idle resident sub-band is screened according to the size relationship between the number of resident users and the preset resident sub-band screening threshold, if the number of resident users is greater than or equal to the preset resident sub-band screening threshold, the resident sub-band is regarded as the idle resident sub-band, and it can be understood that if the number of resident users is greater than the preset resident sub-band screening threshold, it indicates that the sub-band already resides in enough users, and the idle resident sub-band can be used for a service flow when the sub-band is idle.
Further, the idle resident sub-band is added to the tail of the to-be-allocated sub-band resource list, and it can be understood that the idle resident sub-band is added to the tail so that when the to-be-allocated sub-band resource list is used for allocation, the front idle service sub-band is still preferentially used, and when the number of the idle service sub-bands is insufficient, the space resident sub-band is used for allocation.
On the basis of the above embodiment, the method further includes:
and adjusting the size of the resident sub-band screening threshold in real time according to the result of the resident sub-band resource allocation of the signaling Msg 3.
As can be seen from the above description of the embodiments, the embodiments of the present invention provide a camping subband screening threshold to screen and determine idle camping subbands. Preferably, the embodiment of the present invention further provides a dynamic adjustment method for a resident subband screening threshold, so as to adjust the size of the resident subband screening threshold in real time.
Specifically, first, the resident subband screening threshold resideuumth is initialized, the maximum value of the number of resident users is configured for the resideuumth, and the TTI number NoMsg3 allocttinnum to which no Msg3 resident subband resource is allocated is initialized;
then, when a cell SR stay factor is configured, updating a stay sub-band screening threshold to be the actually configured maximum value ResideUeNumTh of the stay user number (SR stay factor) 35; then RAR scheduling is started, and the number Msg3allocNumPerCurTti of the subband resources allocated with the Msg3 for each TTI is initialized to 0;
if the Msg3 resources to be allocated currently exist, then Msg3allocNumPerCurTti + +, and whether Msg3 resident sub-band resource allocation is successful is judged;
if the Msg3 resident sub-band resource allocation is successful, ResideUeNumTh- -; and ensures the minimum value MinResideUeUeNumTh; the RAR scheduling ends.
If the Msg3 resident sub-band resource allocation fails, then directly ResideUeNumTh + is 5; the RAR scheduling ends.
Finally, whether the NoMsg3 allocTtNum is larger than a threshold value MaxSpucheMsg 3 TtNum of the resident subband screening threshold is reduced by not performing the RAR access process for N continuous TTIs;
if so, it is proved that there is enough TTI not to perform the access procedure, the resident sub-band screening threshold can be reduced, and the flow is ended by making ResideUeNumTh be MinResideUeNumTh.
On the basis of the above embodiment, after the resource scheduling is performed on the users in sequence according to the priority queue order of the users, the method further includes:
and updating the service identification information of each successfully scheduled user, wherein the service identification information is used for identifying whether the user works by using the resident sub-band or the service sub-band.
Preferably, the embodiment of the present invention marks the user according to the sub-band type of the service performed by the user.
For the user using the resident sub-band as service, adding corresponding service identification information to the user, and adding the service identification information into a user list working by using the resident sub-band; similarly, for the users using the service sub-band as service, the corresponding service identification information is added to the users, and the corresponding service identification information is added to the user list working using the service sub-band.
Then when the priority queue of the user is determined by the next prescheduling, the user list working by using the resident sub-band can be used as the highest priority of the non-precisely controlled users for combing.
On the basis of the foregoing embodiment, if there is no idle service sub-band in the sub-band resource list to be allocated, allocating the idle resident sub-band to the first user specifically includes:
if no idle service sub-band exists in the sub-band resource list to be allocated, detecting the service type of the first user;
and if the service type of the first user meets the condition of the QCI4 type, allocating the idle resident sub-band to the first user.
It can be known from the content of the above embodiment that, when the number of idle service sub-bands is insufficient, the embodiment of the present invention allocates the idle resident sub-band to the service, but the allocation of the idle resident sub-band needs to determine whether the user meets the condition, and first, it needs to determine whether the user can make the service on the resident sub-band according to the screening condition for using the resident sub-band to make the service, because there are multiple resident users in the resident sub-band, in order to avoid blocking the service flow initiated by other resident users, the service characteristic of the user making the service on the resident sub-band needs to be short in data transmission time, so that the service of QCI4 class can be made on the resident sub-band.
So that when the user satisfies the QCI4 type condition, the user can be assigned an idle resident sub-band.
Fig. 2 is a schematic structural diagram of a spectrum resource dynamic allocation apparatus according to an embodiment of the present invention, as shown in fig. 2, including: a pre-scheduling module 201 and a scheduling module 202, wherein:
the pre-scheduling module 201 is configured to obtain a to-be-allocated subband resource list and a priority queue of a user, where the to-be-allocated subband resource list includes an idle service subband and an idle resident subband;
the scheduling module 202 is configured to perform resource scheduling on the users in sequence according to the priority queue order of the users, and in the resource scheduling process, if a first user is using a resident subband for performing a service, allocate the idle service subband to the first user, and if there is no idle service subband in the to-be-allocated subband resource list, allocate the idle resident subband to the first user.
Specifically, how to implement the technical scheme of the embodiment of the method for dynamically allocating spectrum resources shown in fig. 1 through the pre-scheduling module 201 and the scheduling module 202 is similar, and the implementation principle and the technical effect are not described herein again.
According to the dynamic allocation device for the spectrum resources, provided by the embodiment of the invention, the idle resident sub-band is used for providing the user service, so that the utilization rate of the sub-band is improved and the time delay is reduced while the access and other resident users initiating the service under the resident sub-band are not influenced.
On the basis of the foregoing embodiment, the pre-scheduling module is configured to:
and adding an idle resident sub-band with the resident user number greater than or equal to a preset resident sub-band screening threshold into the tail part of the sub-band resource list to be distributed.
On the basis of the foregoing embodiment, the pre-scheduling module is further configured to:
and adjusting the size of the resident sub-band screening threshold in real time according to the result of the resident sub-band resource allocation of the signaling Msg 3.
On the basis of the above embodiment, the apparatus further includes:
and the updating module is used for updating the service identification information of each successfully scheduled user, and the service identification information is used for identifying whether the user works by using the resident sub-band or the service sub-band.
On the basis of the foregoing embodiment, the scheduling module is specifically configured to:
if no idle service sub-band exists in the sub-band resource list to be allocated, detecting the service type of the first user;
and if the service type of the first user meets the condition of the QCI4 type, allocating the idle resident sub-band to the first user.
Fig. 3 is a block diagram of an electronic device according to an embodiment of the present invention, and referring to fig. 3, the electronic device includes: a processor (processor)301, a communication Interface (communication Interface)302, a memory (memory)303 and a bus 304, wherein the processor 301, the communication Interface 302 and the memory 303 complete communication with each other through the bus 304. Processor 301 may call logic instructions in memory 303 to perform the following method: acquiring a sub-band resource list to be allocated and a priority queue of a user, wherein the sub-band resource list to be allocated comprises an idle service sub-band and an idle resident sub-band; and sequentially scheduling resources for the users according to the priority queue sequence of the users, in the resource scheduling process, if a first user uses a resident sub-band to perform service, allocating the idle service sub-band to the first user, and if no idle service sub-band exists in the sub-band resource list to be allocated, allocating the idle resident sub-band to the first user.
An embodiment of the present invention discloses a computer program product, which includes a computer program stored on a non-transitory computer readable storage medium, the computer program including program instructions, when the program instructions are executed by a computer, the computer can execute the methods provided by the above method embodiments, for example, the method includes: acquiring a sub-band resource list to be allocated and a priority queue of a user, wherein the sub-band resource list to be allocated comprises an idle service sub-band and an idle resident sub-band; and sequentially scheduling resources for the users according to the priority queue sequence of the users, in the resource scheduling process, if a first user uses a resident sub-band to perform service, allocating the idle service sub-band to the first user, and if no idle service sub-band exists in the sub-band resource list to be allocated, allocating the idle resident sub-band to the first user.
Embodiments of the present invention provide a non-transitory computer-readable storage medium, which stores computer instructions, where the computer instructions cause the computer to perform the methods provided by the above method embodiments, for example, the methods include: acquiring a sub-band resource list to be allocated and a priority queue of a user, wherein the sub-band resource list to be allocated comprises an idle service sub-band and an idle resident sub-band; and sequentially scheduling resources for the users according to the priority queue sequence of the users, in the resource scheduling process, if a first user uses a resident sub-band to perform service, allocating the idle service sub-band to the first user, and if no idle service sub-band exists in the sub-band resource list to be allocated, allocating the idle resident sub-band to the first user.
Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware. With this understanding in mind, the above-described technical solutions may be embodied in the form of a software product, which can be stored in a computer-readable storage medium such as ROM/RAM, magnetic disk, optical disk, etc., and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the method according to each embodiment or some parts of the embodiments.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present 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 solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (8)
1. A method for dynamically allocating spectrum resources, comprising:
acquiring a sub-band resource list to be allocated and a priority queue of a user, wherein the sub-band resource list to be allocated comprises an idle service sub-band and an idle resident sub-band;
and sequentially scheduling resources for the users according to the priority queue sequence of the users, in the resource scheduling process, if a first user uses a resident sub-band to perform service, allocating the idle service sub-band to the first user, and if no idle service sub-band exists in the sub-band resource list to be allocated, allocating the idle resident sub-band to the first user.
2. The method for dynamically allocating spectrum resources according to claim 1, further comprising:
and adding an idle resident sub-band with the resident user number greater than or equal to a preset resident sub-band screening threshold into the tail part of the sub-band resource list to be distributed.
3. The method for dynamically allocating spectrum resources according to claim 2, further comprising:
and adjusting the size of the resident sub-band screening threshold in real time according to the result of the resident sub-band resource allocation of the signaling Msg 3.
4. The method for dynamically allocating spectrum resources according to claim 1, wherein after the users are sequentially scheduled with resources according to the priority queue order of the users, the method further comprises:
and updating the service identification information of each successfully scheduled user, wherein the service identification information is used for identifying whether the user works by using the resident sub-band or the service sub-band.
5. The method for dynamically allocating spectrum resources according to claim 1, wherein if there is no idle service sub-band in the sub-band resource list to be allocated, allocating the idle camping sub-band to the first user specifically comprises:
if no idle service sub-band exists in the sub-band resource list to be allocated, detecting the service type of the first user;
and if the service type of the first user meets the condition of the QCI4 type, allocating the idle resident sub-band to the first user.
6. An apparatus for dynamically allocating spectrum resources, comprising:
the system comprises a pre-scheduling module, a scheduling module and a scheduling module, wherein the pre-scheduling module is used for acquiring a sub-band resource list to be allocated and a priority queue of a user, and the sub-band resource list to be allocated comprises an idle service sub-band and an idle resident sub-band;
and the scheduling module is used for sequentially scheduling resources for the users according to the priority queue sequence of the users, and in the resource scheduling process, if a first user is using a resident sub-band for service, the idle service sub-band is allocated to the first user, and if no idle service sub-band exists in the sub-band resource list to be allocated, the idle resident sub-band is allocated to the first user.
7. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor when executing the program implements the steps of the method for dynamically allocating spectrum resources according to any one of claims 1 to 5.
8. A non-transitory computer readable storage medium, having a computer program stored thereon, wherein the computer program, when being executed by a processor, implements the steps of the method for dynamically allocating spectrum resources according to any one of claims 1 to 5.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115580362A (en) * | 2022-10-14 | 2023-01-06 | 西南交通大学 | Electromagnetic target dynamic frequency-using strategy determination method based on frequency spectrum monitoring data |
| WO2024060235A1 (en) * | 2022-09-23 | 2024-03-28 | 北京小米移动软件有限公司 | Resource configuration method and device |
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