CN117479312A

CN117479312A - Radio resource scheduling method, device, electronic equipment and storage medium

Info

Publication number: CN117479312A
Application number: CN202311402624.1A
Authority: CN
Inventors: 付响云; 杨明刚; 吴宏; 张媛; 金超; 许话
Original assignee: China Telecom Corp Ltd
Current assignee: China Telecom Corp Ltd
Priority date: 2023-10-26
Filing date: 2023-10-26
Publication date: 2024-01-30

Abstract

The embodiment of the invention realizes the division and classification of a frequency set through the self-adaptive configuration of bandwidth, further can adaptively realize the scheduling of radio resources under a bandwidth limited scene by combining the priority weight of a target object and the load condition of a target cell, flexibly responds to different service requirements and load conditions, coordinates the interference of different frequencies with the cell through an active queue management scheduling strategy, reduces the uplink and downlink interference caused by compressing and protecting the bandwidth, and can be widely applied to the technical field of data processing.

Description

Radio resource scheduling method, device, electronic equipment and storage medium

Technical Field

The present invention relates to the field of data processing technologies, and in particular, to a radio resource scheduling method, a radio resource scheduling device, an electronic device, and a storage medium.

Background

There are three common scheduling algorithms for OFDM (Orthogonal Frequency Division Mutiplexing, collectively referred to as orthogonal frequency division multiple access) systems: the maximum carrier-to-interference ratio C/I (also called maximum rate algorithm) can enable the system to have the highest throughput and the lowest fairness; round Robin scheduling algorithm (Round Robin): the system can have the lowest throughput but the highest fairness; proportional fairness algorithm (Proportional Fairness), a compromise between fairness and throughput, is currently the most common. However, the service requirements in the practical system are very various, and the base station needs to schedule the users with different requirements on the transmission rate at the same time. Therefore, there are limitations to the applicability of existing algorithms.

Disclosure of Invention

The present invention aims to solve at least one of the technical problems in the related art to some extent. Therefore, the invention provides a radio resource scheduling method, a device, electronic equipment and a storage medium, which can efficiently schedule radio resources.

In one aspect, an embodiment of the present invention provides a radio resource scheduling method, including:

acquiring bandwidth configuration information, and determining an effective bandwidth range of a target cell according to the bandwidth configuration information; the target cell comprises a first system cell and a second system cell;

according to the effective bandwidth range, combining the target bandwidth to determine the frequency resource condition of the target cell; determining an initial scheduling strategy according to the frequency resource condition;

based on the initial scheduling strategy, carrying out bandwidth configuration of the target cell through the base station; the information configuration is carried out on the terminal of the target cell through the base station, and further feedback information of the terminal is periodically obtained; the bandwidth configuration comprises dividing a target frequency band of a target cell and configuring the target frequency band into a plurality of frequency sets;

decoding a measurement result of the channel according to the feedback information, and dividing the target frequency set into an interference band and a non-interference band based on the measurement result;

when the uplink scheduling scheme is executed, classifying target objects of the target cells based on the measurement result, and labeling priority weights of the target objects according to historical service information of the target objects;

Based on the priority weight, combining the load condition of the target cell, scheduling the target object to each frequency set of the target frequency band, and further executing uplink scheduling;

and when the downlink scheduling scheme is executed, determining the reference condition of the interference band by combining the load condition of the target cell based on the measurement result, and further executing downlink scheduling.

Optionally, the bandwidth configuration information includes a bandwidth mapping relation and available frequency resources; the effective bandwidth range comprises a first effective bandwidth range and a second effective bandwidth range; determining the effective bandwidth range of the target cell according to the bandwidth configuration information comprises the following steps:

according to the bandwidth mapping relation, determining a first protection bandwidth of a first system cell and a second protection bandwidth of a second system cell;

determining a first initial bandwidth of a first system cell and a second initial bandwidth of a second system cell according to the available frequency resources;

according to the first initial bandwidth and the first protection bandwidth, determining an upper limit of an effective bandwidth and a lower limit of the effective bandwidth of the first system cell, and further determining a first effective bandwidth range of the first system cell;

and determining the upper limit and the lower limit of the effective bandwidth of the second system cell according to the second initial bandwidth and the second protection bandwidth, and further determining the second effective bandwidth range of the second system cell.

Optionally, decoding the measurement result of the channel according to the feedback information, dividing the target frequency set into an interference band and a non-interference band based on the measurement result, including:

decoding a measurement result of the channel according to the feedback information, and further determining a channel state parameter according to the measurement result;

based on the channel state parameters, the base station is used for counting the signal-to-interference-and-noise ratio of each subcarrier, so as to count the average dry strength fed back by each target object;

the target frequency set is divided into an interference band and a non-interference band based on the signal-to-interference-and-noise ratio and the average dry strength in combination with a pre-configured threshold.

Optionally, the method further comprises:

and when the base stations of the first system cell and the second system cell are different, performing measurement information exchange operation between the base station of the first system cell and the base station of the second system cell based on the measurement result of the first system cell and the measurement result of the second system cell.

Optionally, labeling the priority weight of the target object according to the historical service information of the target object includes:

determining the service rate requirement of a target object according to the historical service information, and labeling the priority weight of the target object according to the service rate requirement;

wherein the priority weights are positively correlated with the traffic rate requirements.

Alternatively, the load conditions include high load and low load; the target frequency band comprises a first target frequency band corresponding to a first standard cell and a second target frequency band corresponding to a second standard cell; based on the priority weight, in combination with the load condition of the target cell, the target object is scheduled to each frequency set of the target frequency band, including:

when the load conditions of the first system cell and the second system cell are low loads, idle processing is carried out on the interference zone;

when the load condition of the first system cell is high load and the load condition of the second system cell is low load, idle processing is carried out on the interference zone of the second system cell, the target object of the first system cell is scheduled to a frequency set, close to one side edge of the second target frequency band, in the first target frequency band according to the order of the priority weight from small to large until the frequency set at the edge is full load, and the interference zone of the first system cell is referenced to schedule the rest target object until the load condition of the first system cell returns to the preset condition;

when the load condition of the first system cell is low load and the load condition of the second system cell is high load, idle processing is carried out on the interference zone of the first system cell, the target object of the second system cell is scheduled to a frequency set, close to one side edge of the first target frequency band, in the second target frequency band according to the order of the priority weight from small to large until the frequency set at the edge is full load, and the interference zone of the second system cell is referenced to schedule the rest target object until the load condition of the second system cell returns to the preset condition;

When the load conditions of the first system cell and the second system cell are high loads, the target object of each cell is scheduled to a frequency set in the middle of a target frequency band corresponding to each cell according to the order of priority weights from large to small, the target object of each cell is scheduled to an interference band corresponding to each cell according to the order of priority weights from small to large, and uplink service information on the interference band corresponding to each cell is further configured to be sent in a time division mode; the sending sequence of the uplink service information is positively correlated with the magnitude of the priority weight.

Alternatively, the load conditions include high load and low load; the target frequency band comprises a first target frequency band corresponding to a first standard cell and a second target frequency band corresponding to a second standard cell; based on the measurement result, combining the load condition of the target cell, determining the reference condition of the interference band, and further executing downlink scheduling, including:

when the load condition of the first system cell is high load and the load condition of the second system cell is low load, idle processing is carried out on the interference zone of the second system cell, downlink data and broadcast information of a target object are sent by utilizing a frequency set, which is close to the edge of one side of the second target frequency band, in the first target frequency band according to the order from small priority weights of the target objects of the first system cell until the frequency set of the edge is full load, and the interference zone of the first system cell is referenced to send the downlink data and broadcast information of the rest target objects;

When the load condition of the first system cell is low load and the load condition of the second system cell is high load, idle processing is carried out on the interference zone of the first system cell, downlink data and broadcast information of a target object are sent by utilizing a frequency set, which is close to one side edge of the first target frequency band, in the second target frequency band according to the order from small priority weights of the target objects of the second system cell until the frequency set of the edge is full load, and the interference zone of the second system cell is referenced to send the downlink data and broadcast information of the rest target objects;

when the load conditions of the first system cell and the second system cell are high loads, according to the order of the priority weights of the target objects of the cells from small to large, the frequency set of the edge of the target frequency band corresponding to each cell is utilized to transmit the downlink data and the broadcast information of the target object until the frequency set of the edge reaches full load, the interference bands corresponding to each cell are referenced to transmit the downlink data and the broadcast information of the residual target object of each cell, and then the downlink service information on the interference bands corresponding to each cell is configured to be transmitted in a time division mode; the sending sequence of the downlink service information is positively correlated with the magnitude of the priority weight.

In another aspect, an embodiment of the present invention provides a radio resource scheduling apparatus, including:

the first module is used for acquiring bandwidth configuration information and determining the effective bandwidth range of the target cell according to the bandwidth configuration information; the target cell comprises a first system cell and a second system cell;

the second module is used for determining the frequency resource condition of the target cell by combining the target bandwidth according to the effective bandwidth range; determining an initial scheduling strategy according to the frequency resource condition;

a third module, configured to perform bandwidth configuration of the target cell through the base station based on the initial scheduling policy; the information configuration is carried out on the terminal of the target cell through the base station, and further feedback information of the terminal is periodically obtained; the bandwidth configuration comprises dividing a target frequency band of a target cell and configuring the target frequency band into a plurality of frequency sets;

a fourth module for decoding the measurement result of the channel according to the feedback information, and dividing the target frequency set into an interference band and a non-interference band based on the measurement result;

a fifth module, configured to classify, when the uplink scheduling scheme is executed, a target object of the target cell based on the measurement result, and label a priority weight of the target object according to historical service information of the target object;

A sixth module, configured to schedule, based on the priority weight, the target object to each frequency set of the target frequency band in combination with a load condition of the target cell, and further execute uplink scheduling;

and a seventh module, configured to determine, when the downlink scheduling scheme is executed, a reference condition of the interference band based on the measurement result and in combination with a load condition of the target cell, and further execute downlink scheduling.

Optionally, the apparatus further comprises:

and an eighth module, configured to perform a measurement information exchange operation between the base station of the first standard cell and the base station of the second standard cell based on the measurement result of the first standard cell and the measurement result of the second standard cell when the base stations of the first standard cell and the second standard cell are different.

In another aspect, an embodiment of the present invention provides an electronic device, including: a processor and a memory; the memory is used for storing programs; the processor executes a program to implement the radio resource scheduling method described above.

In another aspect, an embodiment of the present invention provides a computer storage medium in which a processor-executable program is stored, which when executed by a processor is configured to implement the radio resource scheduling method described above.

According to the embodiment of the invention, the effective bandwidth range of the target cell is determined according to the bandwidth configuration information by acquiring the bandwidth configuration information; the target cell comprises a first system cell and a second system cell; according to the effective bandwidth range, combining the target bandwidth to determine the frequency resource condition of the target cell; determining an initial scheduling strategy according to the frequency resource condition; based on the initial scheduling strategy, carrying out bandwidth configuration of the target cell through the base station; the information configuration is carried out on the terminal of the target cell through the base station, and further feedback information of the terminal is periodically obtained; the bandwidth configuration comprises dividing a target frequency band of a target cell and configuring the target frequency band into a plurality of frequency sets; decoding a measurement result of the channel according to the feedback information, and dividing the target frequency set into an interference band and a non-interference band based on the measurement result; when the uplink scheduling scheme is executed, classifying target objects of the target cells based on the measurement result, and labeling priority weights of the target objects according to historical service information of the target objects; based on the priority weight, combining the load condition of the target cell, scheduling the target object to each frequency set of the target frequency band, and further executing uplink scheduling; and when the downlink scheduling scheme is executed, determining the reference condition of the interference band by combining the load condition of the target cell based on the measurement result, and further executing downlink scheduling. The embodiment of the invention realizes the division and classification of the frequency set through the self-adaptive configuration of the bandwidth, further combines the priority weight of the target object and the load condition of the target cell to adaptively realize the scheduling of the radio resource under the bandwidth limited scene, flexibly responds to different service requirements and load conditions, coordinates the interference of different frequencies and cells through the active queue management scheduling strategy, and reduces the uplink and downlink interference caused by the compressed protection bandwidth.

Drawings

The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate and do not limit the invention.

Fig. 1 is a schematic diagram of an implementation environment for performing radio resource scheduling according to an embodiment of the present invention;

fig. 2 is a flow chart of a radio resource scheduling method according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a band index according to an embodiment of the present invention;

fig. 4 is a schematic diagram of a protection bandwidth compression process between different frequencies according to an embodiment of the present invention;

FIG. 5 is a schematic diagram of the present situation of 800MHz spectrum in rural and urban scenarios according to an embodiment of the present invention;

fig. 6 is a schematic diagram of inter-system interference caused by 800MHz spread spectrum according to an embodiment of the present invention;

fig. 7 is a schematic diagram of PRB utilization of a UE according to an embodiment of the present invention;

fig. 8 is a schematic diagram of RB configuration definitions in a channel bandwidth and a transmission bandwidth in an NR channel according to an embodiment of the present invention;

fig. 9 is a schematic structural diagram of a radio resource scheduling device according to an embodiment of the present invention;

fig. 10 is a schematic structural diagram of an electronic device according to an embodiment of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.

It should be noted that although functional block diagrams are depicted as block diagrams, and logical sequences are shown in the flowchart, in some cases, the steps shown or described may be performed in a different order than the block diagrams in the system. The terms first/S100, second/S200, and the like in the description and in the claims and in the above-described figures, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the invention. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.

It can be understood that the radio resource scheduling method provided by the embodiment of the invention can be applied to any computer device with data processing and computing capabilities, and the computer device can be various terminals or servers. When the computer device in the embodiment is a server, the server is an independent physical server, or is a server cluster or a distributed system formed by a plurality of physical servers, or is a cloud server for providing cloud services, cloud databases, cloud computing, cloud functions, cloud storage, network services, cloud communication, middleware services, domain name services, security services, CDN (Content Delivery Network ), basic cloud computing services such as big data and artificial intelligence platforms, and the like. Alternatively, the terminal is a smart phone, a tablet computer, a notebook computer, a desktop computer, or the like, but is not limited thereto.

FIG. 1 is a schematic view of an embodiment of the invention. Referring to fig. 1, the implementation environment includes at least one terminal 102 and a server 101. The terminal 102 and the server 101 can be connected through a network in a wireless or wired mode to complete data transmission and exchange.

The server 101 may be an independent physical server, a server cluster or a distributed system formed by a plurality of physical servers, or a cloud server providing cloud services, cloud databases, cloud computing, cloud functions, cloud storage, network services, cloud communication, middleware services, domain name services, security services, CDNs (Content Delivery Network, content delivery networks), basic cloud computing services such as big data and artificial intelligent platforms, and the like.

In addition, server 101 may also be a node server in a blockchain network. The blockchain is a novel application mode of computer technologies such as distributed data storage, point-to-point transmission, a consensus mechanism, an encryption algorithm and the like.

The terminal 102 may be, but is not limited to, a smart phone, tablet, notebook, desktop, smart box, smart watch, etc. The terminal 102 and the server 101 may be directly or indirectly connected through wired or wireless communication, which is not limited in this embodiment of the present invention.

The embodiment of the present invention provides a radio resource scheduling method based on the implementation environment shown in fig. 1, and the following description will take an example that the radio resource scheduling method is applied to the server 101 as an application, and it will be understood that the radio resource scheduling method may also be applied to the terminal 102.

Referring to fig. 2, fig. 2 is a flowchart of a radio resource scheduling method applied to a server according to an embodiment of the present invention, where an execution body of the radio resource scheduling method may be any one of the foregoing computer devices (including a server or a terminal). Referring to fig. 2, the method includes the steps of:

s100, acquiring bandwidth configuration information, and determining an effective bandwidth range of a target cell according to the bandwidth configuration information;

the target cell includes a first system cell and a second system cell; the bandwidth configuration information comprises a bandwidth mapping relation and available frequency resources; the effective bandwidth range comprises a first effective bandwidth range and a second effective bandwidth range; in some embodiments, determining the effective bandwidth range of the target cell according to the bandwidth configuration information may include: according to the bandwidth mapping relation, determining a first protection bandwidth of a first system cell and a second protection bandwidth of a second system cell; determining a first initial bandwidth of a first system cell and a second initial bandwidth of a second system cell according to the available frequency resources; according to the first initial bandwidth and the first protection bandwidth, determining an upper limit of an effective bandwidth and a lower limit of the effective bandwidth of the first system cell, and further determining a first effective bandwidth range of the first system cell; and determining the upper limit and the lower limit of the effective bandwidth of the second system cell according to the second initial bandwidth and the second protection bandwidth, and further determining the second effective bandwidth range of the second system cell.

S200, determining the frequency resource condition of the target cell according to the effective bandwidth range and combining the target bandwidth; determining an initial scheduling strategy according to the frequency resource condition;

in some embodiments, the implementation of steps S100 and S200 may be implemented by the base station calculating the bandwidth of the required first system target cell (i.e. the first system cell), the bandwidth of the second system target cell (i.e. the second system cell) and the corresponding protection bandwidth according to the target bandwidth size and the available frequency band resources configured by the network manager, and activating the initial scheduling policy. The method comprises the following specific steps:

and the base station obtains a protection bandwidth (marked as a first protection bandwidth GB 1) corresponding to the frequency band used by the first system and a protection bandwidth (marked as a second protection bandwidth GB 2) corresponding to the frequency band used by the second system through a bandwidth mapping relation preset by the network manager. The bandwidths of the available frequency resources configured to the first system cell and the second system cell by the network manager are respectively recorded as a first initial bandwidth and a second initial bandwidth, the lower limit of the effective bandwidth of the first system is 'first initial bandwidth-GB 1', and the upper limit is 'first initial bandwidth-1/2X GB1'; the lower limit of the effective bandwidth size of the second system is "second initial bandwidth-GB 2", and the upper limit is "second initial bandwidth-1/2×GB2".

The base station judges the condition of the frequency resource, compares the target bandwidth sizes required by the two cells configured by the network management with the upper limit and the lower limit of the effective bandwidth size, and adopts different initial strategies according to the result. The specific cases and scheduling strategies that may exist are as follows:

abundant frequency resources: the method comprises the steps that a target bandwidth of a first system cell is < "first initial bandwidth-GB 1", a target bandwidth of a second system cell is < "second initial bandwidth-GB 2", an optimal scheme is adopted for initial configuration of a guard band, a bandwidth mapping result preset by a network manager is applied, and the guard bandwidths of the two system cells are respectively set to GB1 and GB2;

the frequency resource is tense: the target bandwidth of the first system cell > "first initial bandwidth-1/2×gb1", or the target bandwidth of the second system cell > "second initial bandwidth-1/2×gb2"; the initial configuration of the guard band adopts the narrowest scheme, and a strategy of combining a buffer queue and service weight is applied to a target cell with insufficient resources;

the frequency resource is moderate: for convenience of description, each frequency band (and frequency set) is numbered and indexed as shown in fig. 3; all the cases except the comparison result are shown in fig. 4, which shows a schematic diagram of a protection bandwidth compression process between different frequencies, and the compressed protection bandwidth is obtained through calculation, and resource blocks which may overlap with the guard bands of the first and second standard cells are respectively used as a third frequency set (fig. 3 (3)) and a fourth frequency set (fig. 3 (4)). After the frequency bands excluding the guard bandwidth (i.e., the first, second, fifth and sixth frequency sets, which correspond to (1), (2), (5) and (6) of fig. 3 in sequence) are jointly mapped to subcarriers, an equivalent available bandwidth can be obtained; at this time, the bandwidths of the third and fourth frequency sets should be valued so that the equivalent available bandwidth meets the target bandwidth size of the network management configuration, and the third frequency set and the fourth frequency set should be as large as possible on the premise of meeting the requirements.

S300, based on an initial scheduling strategy, carrying out bandwidth configuration of a target cell through a base station; the information configuration is carried out on the terminal of the target cell through the base station, and further feedback information of the terminal is periodically obtained;

it should be noted that, the bandwidth configuration includes dividing a target frequency band of a target cell, and configuring the target frequency band as a plurality of frequency sets; illustratively, in some embodiments, step S300 may be implemented by the following procedure:

firstly, a base station configures available bandwidth and protection bandwidth of a first standard target cell and a second standard target cell, and issues configuration information of a network side for a terminal. The method comprises the following specific steps:

the configuration information on the network side includes, but is not limited to, parameters such as a frequency band range, a Bandwidth size, a start position of BWP (Bandwidth Part, which is intuitively understood as "partial Bandwidth"), the number of frequency domain resource blocks, a cyclic prefix type, and a subcarrier spacing. If there is an NR (New Radio, also called a New Radio/New air interface, or a 5G Radio network) in the first system and the second system, the base station configures a plurality of initial BWP in the available frequency band, and then dynamically configures the working BWP of the terminal (including adaptive adjustment and network management mapping configuration) according to service changes.

Then, the base station configures measurement information for terminals in the first system target cell and the second system target cell, including but not limited to dedicated subband measurement configuration, total range of frequency bands to be measured, downlink reference signals of corresponding frequency bands, transmitting power of the reference signals, and indication of whether to measure the full frequency band. The method comprises the following specific steps:

the first and sixth frequency sets are located at the center of the available frequency band, and the seventh and eighth frequency sets are edge Resource Blocks (RBs) close to the guard band in the second and fifth frequency sets; thus, the subbands in which dedicated measurement configurations are performed should include at least a first set of frequencies, a sixth set of frequencies, a seventh set of frequencies, and an eighth set of frequencies. The range of the frequency set and the number of the resource blocks are configured by the network side based on the bandwidth size.

S400, decoding a measurement result of a channel according to feedback information, and dividing a target frequency set into an interference band and a non-interference band based on the measurement result;

it should be noted that, in some embodiments, step S400 may include: decoding a measurement result of the channel according to the feedback information, and further determining a channel state parameter according to the measurement result; based on the channel state parameters, the base station is used for counting the signal-to-interference-and-noise ratio of each subcarrier, so as to count the average dry strength fed back by each target object; the target frequency set is divided into an interference band and a non-interference band based on the signal-to-interference-and-noise ratio and the average dry strength in combination with a pre-configured threshold.

Illustratively, in some embodiments, the base station obtains feedback information of the terminal, decodes the channel measurement result, and determines a channel state parameter; the base station calculates and counts the signal-to-interference-plus-noise ratio of each subcarrier based on the measured channel state, and counts the average interference intensity (expressed by the signal-to-interference-plus-noise ratio) fed back by each user; the base station reads a threshold value preconfigured by a network manager, divides an available frequency band/physical resource block into an interference band (also called an interference frequency band) and a non-interference band (also called a non-interference frequency band), and evaluates the performance of each frequency band based on measurement;

the thresholds may include a first threshold and a second threshold for a received level difference, a third threshold for user signal-to-interference-plus-noise ratio evaluation, a fourth threshold for a subcarrier signal-to-interference-plus-noise ratio, and so on.

The channel measurement results include, but are not limited to, channel state information, CQI information, RSRP, and RSRQ, and the channel state includes, but is not limited to, effective signal strength, measured signal power of the terminal, and background noise.

The base station evaluates the interference of each frequency resource shown in fig. 3, compares the interference with a first threshold value and a second threshold value preset by a network manager, and processes the interference as follows:

judging that the difference value of the receiving level values of the first frequency band and the seventh frequency band exceeds a first threshold value, and marking the seventh frequency band as an interference band;

Judging that the difference value of the receiving level values of the first frequency band and the seventh frequency band does not exceed a first threshold value, and marking the seventh frequency band as a non-interference band;

judging that the difference value of the receiving level values of the sixth frequency band and the eighth frequency band exceeds a first threshold value, and marking the eighth frequency band as an interference band;

judging that the difference value of the receiving level values of the sixth frequency band and the eighth frequency band does not exceed a first threshold value, and marking the eighth frequency band as a non-interference band;

for evaluation of other frequency bands than the seventh and eighth frequency bands, the process flow is as follows:

if the measurement result of the first or second system is reported for each subcarrier, and the network management configuration subcarrier evaluation flow is available, then:

judging whether the signal-to-noise ratio of the nth subcarrier is larger than a third threshold value, if so, marking the physical resource block corresponding to the subcarrier as a non-interference zone; otherwise, marking the physical resource block corresponding to the subcarrier as an interference band;

for example, the N physical resource blocks at the edge of the available frequency band may be denoted as interference bands, and the other portions of the available frequency band as non-interference bands. It should be noted that, regarding the subcarrier and the corresponding relation between the subcarrier and the physical resource block, and the meanings of technical terms such as subcarrier, physical resource block and available frequency band belong to common general knowledge, the technical scheme of the embodiment of the invention mainly focuses on labeling and classifying implementation logic and situations.

In some embodiments, the method may further include: and when the base stations of the first system cell and the second system cell are different, performing measurement information exchange operation between the base station of the first system cell and the base station of the second system cell based on the measurement result of the first system cell and the measurement result of the second system cell.

In some embodiments, the method may further include a step of determining whether the base stations of the two cells are co-located, where the specific flow is as follows:

if the base stations of the target cells of the first system and the second system are the same (or belong to a unified hardware entity), directly entering the subsequent steps of the method flow, and executing a scheduling strategy by integrating the measurement results;

otherwise, the first standard target cell base station and the second standard target cell base station execute a measurement information exchange process (such as MAC layer information exchange), and the negotiated unified scheduling entity executes the subsequent steps.

S500, when an uplink scheduling scheme is executed, classifying target objects of a target cell based on a measurement result, and labeling priority weights of the target objects according to historical service information of the target objects;

it should be noted that, in some embodiments, labeling the priority weight of the target object according to the historical service information of the target object includes: determining the service rate requirement of a target object according to the historical service information, and labeling the priority weight of the target object according to the service rate requirement; wherein the priority weights are positively correlated with the traffic rate requirements.

In some embodiments, the specific procedure of classifying the cell users based on the interference situation obtained by the measurement result by the base station is as follows:

the first standard working terminal (which can be judged by the signal-to-interference-plus-noise ratio) with the interference intensity larger than a fifth threshold is listed in a first queue, otherwise, the first working terminal is listed in a second queue;

the second system working terminals with interference intensities larger than a sixth threshold are listed in a third queue, otherwise, the second system working terminals are listed in a fourth queue;

and the first queue and the third queue are terminal sets with geographic positions close to the base station, and the fourth queue and the fifth queue are terminal sets with geographic positions far from the base station.

Furthermore, the base station invokes the historical service information of the user, calculates and evaluates whether the current speed meets the service requirement of the user, and marks the priority weight for the user; the weight calculation method is preset by a network manager, and the weight is positively correlated with the rate requirement of a specific service.

S600, scheduling a target object to each frequency set of a target frequency band based on priority weight and in combination with the load condition of a target cell, and further executing uplink scheduling;

it should be noted that the load conditions include high load and low load; the target frequency band comprises a first target frequency band corresponding to a first standard cell and a second target frequency band corresponding to a second standard cell; in some embodiments, scheduling the target object to each frequency set of the target frequency band based on the priority weights in combination with the load situation of the target cell includes: when the load conditions of the first system cell and the second system cell are low loads, idle processing is carried out on the interference zone; when the load condition of the first system cell is high load and the load condition of the second system cell is low load, idle processing is carried out on the interference zone of the second system cell, the target object of the first system cell is scheduled to a frequency set, close to one side edge of the second target frequency band, in the first target frequency band according to the order of the priority weight from small to large until the frequency set at the edge is full load, and the interference zone of the first system cell is referenced to schedule the rest target object until the load condition of the first system cell returns to the preset condition; when the load condition of the first system cell is low load and the load condition of the second system cell is high load, idle processing is carried out on the interference zone of the first system cell, the target object of the second system cell is scheduled to a frequency set, close to one side edge of the first target frequency band, in the second target frequency band according to the order of the priority weight from small to large until the frequency set at the edge is full load, and the interference zone of the second system cell is referenced to schedule the rest target object until the load condition of the second system cell returns to the preset condition; when the load conditions of the first system cell and the second system cell are high loads, the target object of each cell is scheduled to a frequency set in the middle of a target frequency band corresponding to each cell according to the order of priority weights from large to small, the target object of each cell is scheduled to an interference band corresponding to each cell according to the order of priority weights from small to large, and uplink service information on the interference band corresponding to each cell is further configured to be sent in a time division mode; the sending sequence of the uplink service information is positively correlated with the magnitude of the priority weight.

In some embodiments, the base station schedules the users with high priority to the first frequency set and the sixth frequency set, determines the load situation based on the periodic statistics, and executes the following scheduling schemes according to the specific situations:

the first standard target cell and the second standard target cell are low in load: the interference frequency band is idle and is not configured to the user, and the base station does not send an instruction for switching BWP;

high load of the first standard target cell and low load of the second standard target cell: in the effective bandwidth of the second system, the interference frequency band is idle and is not allocated to the user, and meanwhile, the users in the first queue in the first system cell are scheduled to a seventh frequency set one by one according to the sequence of the weight from small to large, and after the seventh frequency set is fully loaded, the users are scheduled to an interference band or other parts of the interference band until the load returns to normal (if the length of a buffer queue does not exceed a preset value); if the users in the first queue are all scheduled to the seventh frequency set and the interference zone, adopting a scheme of buffering the queue, and enabling the uplink service in the second queue to jointly determine a transmission sequence according to the weight and the time weight;

high load of the second standard target cell and low load of the first standard target cell: in the effective bandwidth of the first system, the interference frequency band is limited and is not allocated to the users, meanwhile, the users in the third queue in the second system cell are scheduled to an eighth frequency set one by one according to the sequence of the weight from small to large, and after the eighth frequency set is fully loaded, the users are scheduled to an interference band or other parts of the interference band until the load returns to normal; if the users in the queue III are all scheduled to the eighth frequency set and the interference zone, adopting a scheme of buffering the queue, and enabling the uplink service in the queue IV to jointly determine a transmission sequence according to the weight and the time weight;

The first standard target cell and the second standard target cell are high in load: preferentially scheduling service users with high weight to a first frequency set and a sixth frequency set, and scheduling users in a first queue in a first system cell and users in a third queue in a second system cell to an interference frequency band according to the order of the weights from small to large; executing a power control scheme, and adopting low-power configuration for cells of an interference frequency band; and configuring uplink service information on the interference zone of the first system cell and the interference zone of the second system cell to be sent in a time division mode, and preferentially sending the service with high weight. Similarly, if the users in the first queue have all been scheduled to the seventh frequency set and the interference zone, a scheme of buffering the queue is adopted, so that the uplink service in the second queue jointly determines the sending sequence according to the weight and the time weight; if the users in the queue III are all scheduled to the eighth frequency set and the interference zone, adopting a scheme of buffering the queue, and enabling the uplink service in the queue IV to jointly determine a transmission sequence according to the weight and the time weight;

the load condition determination may determine the network congestion level based on the length of the buffer queue.

In some embodiments, the method further realizes that when the base station evaluates that the load condition based on the periodic statistical result is higher in a certain system, frequency or time division scheduling needs to be performed, and the base station sends the scheduling instruction to the target terminal; if the target cells are all in low load, the base station only sends necessary instructions through broadcast messages, and frequency domain scheduling is not needed.

And S700, when the downlink scheduling scheme is executed, determining the reference condition of the interference band by combining the load condition of the target cell based on the measurement result, and further executing downlink scheduling.

It should be noted that the load conditions include high load and low load; the target frequency band comprises a first target frequency band corresponding to a first standard cell and a second target frequency band corresponding to a second standard cell; in some embodiments, determining the reference situation of the interference band based on the measurement result in combination with the load situation of the target cell, and further performing downlink scheduling includes: when the load conditions of the first system cell and the second system cell are low loads, idle processing is carried out on the interference zone; when the load condition of the first system cell is high load and the load condition of the second system cell is low load, idle processing is carried out on the interference zone of the second system cell, downlink data and broadcast information of a target object are sent by utilizing a frequency set, which is close to the edge of one side of the second target frequency band, in the first target frequency band according to the order from small priority weights of the target objects of the first system cell until the frequency set of the edge is full load, and the interference zone of the first system cell is referenced to send the downlink data and broadcast information of the rest target objects; when the load condition of the first system cell is low load and the load condition of the second system cell is high load, idle processing is carried out on the interference zone of the first system cell, downlink data and broadcast information of a target object are sent by utilizing a frequency set, which is close to one side edge of the first target frequency band, in the second target frequency band according to the order from small priority weights of the target objects of the second system cell until the frequency set of the edge is full load, and the interference zone of the second system cell is referenced to send the downlink data and broadcast information of the rest target objects; when the load conditions of the first system cell and the second system cell are high loads, according to the order of the priority weights of the target objects of the cells from small to large, the frequency set of the edge of the target frequency band corresponding to each cell is utilized to transmit the downlink data and the broadcast information of the target object until the frequency set of the edge reaches full load, the interference bands corresponding to each cell are referenced to transmit the downlink data and the broadcast information of the rest target objects of the cells, and then the downlink service information on the interference bands corresponding to each cell is configured to be transmitted in a time division mode; the sending sequence of the downlink service information is positively correlated with the magnitude of the priority weight.

In some embodiments, the base station determines the load situation based on the periodic statistics, if the network manager does not configure the beamforming-related function, then the following scheduling scheme is executed in combination with the specific situation:

the first standard target cell and the second standard target cell are low in load: the interference frequency band is idle, and downlink data is not transmitted by adopting the interference frequency band;

high load of the first standard target cell and low load of the second standard target cell: in the effective bandwidth of the second system, the interference frequency band is idle, and downlink data and broadcast information (also called unicast information) are not transmitted by adopting the interference frequency band; meanwhile, unicast information and downlink data corresponding to users in the first system queue I are transmitted by using a seventh frequency set according to the sequence from small weight to large weight, and after the seventh frequency set is fully loaded, an interference band or other parts of the interference band are used;

high load of the second standard target cell and low load of the first standard target cell: in the effective bandwidth of the first system, the interference frequency band is idle, and downlink data and broadcast information are not transmitted by adopting the interference frequency band; meanwhile, unicast information and downlink data corresponding to users in the second system queue III are sent by using an eighth frequency set according to the sequence from small weight to large weight, and after the eighth frequency set is fully loaded, an interference band or other parts of the interference band are used;

The first standard target cell and the second standard target cell are high in load: unicast information and downlink data corresponding to users in the first system queue I are sent by using a seventh frequency set according to the sequence from small weight to large weight, and after the seventh frequency set is fully loaded, an interference band or other parts of the interference band are used; unicast information and downlink data corresponding to users in the second system queue III are sent by using an eighth frequency set according to the sequence from small weight to large weight, and after the eighth frequency set is fully loaded, an interference band or other parts of the interference band are used; and configuring downlink service information on the interference band of the first system cell and the interference band of the second system cell to be sent in a time division mode, and preferentially sending the service with high weight.

In some embodiments, the method further comprises the step that the base station sends a broadcast message and/or unicast indication information.

For the purpose of illustrating the principles of the present invention in detail, the following general flow chart of the present invention is described in connection with certain specific embodiments, and it is to be understood that the following is illustrative of the principles of the present invention and is not to be construed as limiting the present invention.

Firstly, in order to facilitate understanding of the technical scheme of the present invention, technical terms possibly related to the technical scheme of the present invention are described:

RB (Resource Block); RE (Resource Elements, resource element); SINR (Signal to Interference plus Noise Ratio, signal-to-interference-and-noise ratio); CQI (Channel quality indicator, channel quality indication); a TBC (transmission bandwith configuration, transmit bandwidth configuration); EVM (Error Vector Magnitude ); CRS (Common Reference Signal ); SRS (Sounding Reference Signal ); CQI (Channel Quality Indicator, channel quality indication).

In mobile communication, spectrum is a scarce resource, and high-frequency deployment such as 2.1G and 3.5G of current 5G NR is difficult to meet coverage requirements. The low frequency band has the characteristics of low propagation loss, wide coverage, strong penetrating power, low network deployment cost and the like, is a global accepted gold frequency band for mobile communication, and is suitable for large-scale network coverage. In order to perfect the deep coverage of the existing network and expand the wide coverage capacity, operators generally adopt a low-frequency heavy tillage strategy. The high-quality 5G service coverage in rural remote areas can be made up by carrying out heavy tillage on the frequency resources of the low frequency band, meanwhile, the 5G industrial space of the low frequency band is widened, and the performance of the 5G system is further improved.

Although the low frequency coverage is good, the spectrum resources are limited and the bandwidth is insufficient. Taking a certain telecom operator a as an example (as shown in fig. 5), the 800MHz frequency band only has 15MHz resources, and meanwhile, stray and blocking interference to railways and other operators, interference among different systems and the like are avoided (as shown in fig. 6). To address inter-band interference, guard bands/transition bands need to be provided to ensure user performance within the active band. However, after subtracting the guard band, the available bandwidth of the 800MHz band is less than 10mhz+5mhz, so the present invention proposes a scheduling scheme for compressing the guard band in a frequency limited scenario.

Among them, the guard/transition band concept of LTE with NR:

to control out-of-band interference, guarantee in-band signal quality, as shown in fig. 7, LTE and NR each define a channel bandwidth (channel bandwidth), guard band (guard band), and transmit bandwidth configuration (transmission bandwith configuration, TBC). The insertion loss refers to the degree of loss of the filter to the signal in terms of radio frequency, while the guard bandwidth/transition band is the frequency interval from the cut-off frequency (the frequency at which the insertion loss is equal to 3 dB) to the maximum insertion loss value. The guard bandwidth is a frequency band for suppressing adjacent channel interference and reducing error vector magnitude (Error Vector Magnitude, EVM), and is located at the edge of the channel bandwidth and is not used for transmitting data.

LTE provides several available channel bandwidths of 1.4MHz, 3MHz, 5MHz, 10MHz, 15MHz and 20MHz, and the guard bandwidth of LTE accounts for 10% of the channel bandwidth (except for 1.4 MHz). For LTE of OFDMA systems, channels are multiplexed in Resource elements (Resource Elements, REs) and Resource Blocks (RBs), and specific guard bandwidth configurations are shown in table 1 below:

TABLE 1

Channel bandwidth	1.4MHz	3MHz	5MHz	10MHz	15MHz	20MHz
							Number of RBs in frequency domain	6	15	25	50	75	100
Maximum available band/MHz	1.08	2.7	4.5	9	13.5	18
							Single side guard bandwidth/kHz	160	150	250	500	750	1000

However, the guard bandwidth of NR is different from that of LTE in three points:

1) The proportion of the guard band to the channel bandwidth is not fixed, so that the guard band is designed according to the actual interference condition, as shown in fig. 8, NR only defines the minimum guard band, and for FR1 and FR2, the sum of the minimum guard bands on both sides respectively accounts for 2% -21% and 5% -7% of the channel bandwidth;

2) The guard bandwidths at two sides of the channel bandwidth may be inconsistent, i.e. the illustrated asymmetry;

3) When the channel bandwidth is determined, the number of PRBs used for LTE (pre-coded resource block group (PRG: precoding resource block group)) is fixed, while the number of PRBs used for NR may be variable.

The transmission bandwidth configuration specifically refers to the maximum number of available Resource Blocks (RBs) within the channel bandwidth, denoted by NRB, and the channel bandwidth denoted by BWChannel, and the minimum guard bandwidth can be calculated according to the 3GPP protocol using the formula (bwchannel×1000 (kHz) -nrb×scs×12)/2-SCS/2, i.e. minimum guard band= (channel bandwidth-maximum number of resource blocks×12×subcarrier spacing-subcarrier spacing)/2.

Thus, the minimum bandwidth of NR designed for a specific UE channel bandwidth and SCS is as follows (in kHz) table 2:

TABLE 2

In particular, when receiving SS/PBCH blocks with BS scs=240 kHz at the channel edge, in order to ensure that the first signal demodulated when the UE accesses the cell is not interfered by the adjacent channel, the minimum bandwidth corresponding to NR is set to be large, specifically as follows (in kHz) table 3:

TABLE 3 Table 3

Exemplary of these are bandwidth limited scenarios and spread spectrum schemes:

as shown in fig. 5, in the 800MHz heavy tillage scheme in rural areas, the frequency bands for LTE and NR are adjacent. Taking this spectrum allocation scheme as an example for discussion, 15MHz spectrum resources are allocated into an LTE band of 10MHz and an NR band of 5MHz, a single-sided guard band of corresponding LTE needs to be set at 500kHz, and the guard band setting of NR is narrower. Therefore, the actual available bandwidth after the guard band is removed is less than 15MHz, the available band can be enlarged by compressing the guard band, overlapping the LTE and NR guard bands, and the guard band between the LTE and NR effective transmission bandwidths must not be lower than 500kHz. Clearly, the bandwidth of the available band can be enlarged by setting a narrower isolation band (e.g. 500 kHz), but there is a lack of solution to this problem in the industry, since co-sited LTE overlapping with NR guard bands can cause severe interference to the transmit band edges. The invention aims to solve the problem that the radio resource scheduling is realized by designing a centralized scheduling scheme of a base station to support a deployment scheme of guard band overlapping under the bandwidth limited scene.

Illustratively, interference measurements for LTE and NR systems:

acquisition of Channel State Information (CSI) requires measurement. In the LTE system, the downlink channel measurement is most basically performed by using a cell common reference signal (Common Reference Signal, CRS), which is transmitted in the entire system bandwidth of all subframes (non-MBSFN or non-ABS subframes), and the terminal can continuously use the same. The sounding reference signal (Sounding Reference Signal, SRS) for uplink channel measurement should ideally be allocated to the full system bandwidth, but in many cases, most of the resource blocks are accessed by frequency hopping between subframes, taking into account the power limitation of the terminal and the capacity of the SRS itself.

Channel quality indication (Channel Quality Indicator, CQI) is a CSI feedback method, LTE specifies that CQI is described in 4 bits, and different CQI index is defined from the spectral efficiency of the channel. After the SINR is quantized into CQI index, the CQI needs to be fed back to the eNB, and this information is carried by PUCCH format 2/2a/2b or PUSCH at the physical layer. LTE supports the following three CQI feedback modes:

1) Wideband (wideband) CQI: the whole system bandwidth only feeds back one CQI, which is usually reflected by the average value of SINR in the frequency domain, and cannot be used for frequency selective scheduling. In this mode, the total fed back CQI is less, and the corresponding uplink control signaling overhead is less. The wideband CQI may be reported (aperiodic reporting) periodically (periodic reporting) or aperiodically. The periodic CQI feedback is generally sent by the PUCCH, which can carry a smaller amount of information, while the non-periodic CQI is sent by the PUSCH, which can carry more information.

2) The terminal selects a subband (UE-selected subband) CQI. This mode is subdivided into two cases: (1) in the periodic feedback, each Subband (SB) is wider, the frequency granularity is coarser, and the width of the subband increases somewhat as the system bandwidth increases. The continuous sub-bands form partial Bandwidths (BP), the union of the partial bandwidths fills the whole system bandwidth, the feedback can be single or multiple times, the best sub-band is reported once, and the CQI of other sub-bands can be fed back successively after multiple times of reporting. (2) In aperiodic feedback, each subband is narrower and the frequency granularity is smaller. The terminal selects the best M subbands to feed back CQI.

3) Higher layer configured sub-band (higher-layer configured subband) CQI. The CQI of all sub-bands under the bandwidth of the one-time feedback system can only be reported aperiodically, and the frequency granularity is the same as the periodic terminal selected sub-band mode.

The NR system does not support a common reference signal CRS of the LTE system, and cell search is mainly completed based on detection of a downlink synchronous channel and a signal, and comprises three parts of primary synchronous signal search, secondary synchronous signal detection and physical broadcast channel detection. The secondary synchronization signal carries a cell identifier 1 and is used as a demodulation reference signal of a physical broadcast channel and also used for radio resource management related measurement and radio link detection related measurement. BWP is a combination of consecutive multiple resource blocks RB within one carrier. The network side cuts out partial bandwidth in the whole large carrier to carry out access and data transmission for the UE so as to realize the energy-saving effect.

The UE-specific semi-static uplink and downlink configuration information is mainly used as measurement configuration, and the configuration information is sent by the UE-specific RRC configuration information. The configured symbol can perform corresponding uplink and downlink transmission according to the specific content of the configuration, and the configured symbol comprises a periodic or semi-static CSI-RS for performing CSI measurement, a periodic CSI report and a periodic or semi-static SRS; UE-specific RRC PRACH for each BWP configuration; type 1 scheduling-free uplink transmission; type 2 non-scheduled uplink transmission.

Semi-static uplink and downlink configuration in NR, semi-static measurement configuration, and mutual coverage rules of dynamic SFI and DCI are as follows:

the uplink and downlink of the semi-static uplink and downlink configuration cannot be modified, and the flexible symbols of the semi-static uplink and downlink configuration can be changed by the semi-static measurement configuration, the dynamic SFI and the DCI configuration.

The uplink and downlink configurations in the semi-static measurement configuration may be changed by the dynamic SFI and DCI configurations, and once the change occurs, semi-static measurement-related behavior will be terminated.

Data transmission of DCI configuration cannot collide with uplink and downlink of SFI configuration, but flexible part of SFI configuration can be changed.

In order to reduce the processing delay, the NR is designed in the CSI-RS, the DMRS and the CSI feedback mechanism:

The CSI-RS pilot design is configurable, and the specific functions, transmission time-frequency locations, bandwidths, etc. of substantially all reference signals are configurable. In an NR system, the CSI-RS not only supports CSI measurement, but also supports time-frequency tracking, RRM/RLM measurement and beam measurement;

DMRS is placed as far forward as possible (on the third or fourth OFDM symbol of one slot, or the 1 st OFDM symbol of the scheduled PDSCH/PUSCH data region) to reduce decoding delay. In order to facilitate measurement and inhibit uplink and downlink cross interference, similar designs are adopted for uplink and downlink DMRS.

Unlike multiple feedback modes binding specific transmission modes in LTE, NR introduces a configurable CSI feedback mechanism that supports CSI feedback and beam measurement reporting simultaneously, with specific configurable parameters as follows: reference signals for measuring channel and interference, types of feedback CSI, codebooks, uplink channel resources used for feedback, and frequency domain and time domain characteristics (such as bandwidth and periodicity of the CSI) of the feedback.

The present invention proposes a scheduling method for radio resources in a bandwidth limited scenario, the main idea of which is to use a guard/transition band overlapping scheme to expand the bandwidth, divide the frequency band into an interference band and a non-interference band, divide the users into a center user and an edge user, allocate the center user with low service requirements to PRBs (precoding resource block group (PRG: precoding resource block group)) at the edge of the frequency band in case of high load, and tune other users with high data requirements to the center PRB of the frequency band. Specifically, a base station/network side configures special sub-band measurement for a shared protection bandwidth, divides an available frequency band into two parts of interference and non-interference, executes different scheduling strategies according to a periodic load statistical result, flexibly responds to different service requirements and load conditions, coordinates interference of different frequencies and cells through an active queue management scheduling strategy, and reduces uplink and downlink interference caused by compressing the protection bandwidth. The method comprises the following specific steps:

Step one: the base station calculates the bandwidth of the target cell of the first system, the bandwidth of the target cell of the second system and the corresponding protection bandwidth according to the target bandwidth size and the available frequency band resources configured by the network manager, and activates the initial scheduling strategy;

step two: the base station configures the available bandwidth and the protection bandwidth of the first standard target cell and the second standard target cell, and issues configuration information of a network side for the terminal;

step three: the base station configures measurement information for terminals in a first system target cell and a second system target cell, wherein the measurement information comprises, but is not limited to, special subband measurement configuration, a total range of a frequency band to be measured, downlink reference signals of corresponding frequency bands, the transmitting power of the reference signals and an indication of whether to measure a full frequency band;

step four: the base station acquires feedback information of the terminal, decodes a channel measurement result and determines channel state parameters; the base station calculates and counts the signal-to-interference-plus-noise ratio of each subcarrier based on the measured channel state, and counts the average interference intensity (expressed by the signal-to-interference-plus-noise ratio) fed back by each user; the base station reads a threshold value preconfigured by a network manager, divides an available frequency band/physical resource block into an interference band (also called an interference frequency band) and a non-interference band (also called a non-interference frequency band), and evaluates the performance of each frequency band based on measurement;

Step five: judging whether base stations of two cells are co-located or not: the same station directly enters a step six, otherwise, the measurement information exchange process is executed, and the unified scheduling entity after negotiation executes the subsequent steps;

it should be noted that the scheduling portion of the present invention is divided into two portions: an uplink interference suppression strategy and a downlink interference suppression strategy.

The uplink scheduling scheme is as follows:

step six: the base station classifies cell users based on interference conditions obtained by measurement results;

step seven: the base station invokes the historical service information of the user, calculates and evaluates whether the current speed meets the service requirement of the user, and marks the priority weight for the user; the weight calculation method is preset by a network manager, and the weight is positively correlated with the rate requirement of a specific service.

Step eight: the base station dispatches the users with high priority to the first frequency set and the sixth frequency set, judges the load condition based on the periodical statistics result, and executes a corresponding dispatching scheme according to the specific condition;

step nine: when the base station evaluates that the load of a certain system is higher in the step eight, frequency division or time division scheduling is needed, and the base station sends the scheduling instruction to the target terminal; if the target cells are all in low load, the base station only sends necessary instructions through broadcast messages, and frequency domain scheduling is not needed.

The downlink scheduling scheme is as follows:

step ten: the base station judges the load condition based on the periodic statistical result, if the network manager is not configured with the beamforming related function, the base station executes a corresponding scheduling scheme in combination with the specific condition;

step eleven: the base station transmits a broadcast message and/or unicast indication information.

The embodiment of the invention mainly describes the scheduling process when the 800MHz low-frequency heavy tillage is performed, the LTE and NR co-station scheduling different-frequency adjacent 10MHz LTE resource and 5MHz NR resource are performed, and the two cells are in high load. The logic flow of the method of the present invention is further described with reference to the data of the specific embodiment, and the steps are as follows:

1) The base station determines that the bandwidth of the required LTE cell is 9.75MHz and the bandwidth of the NR target cell is 4.8MHz according to the network management configuration, and activates a scheduling strategy combining a buffer queue and service weight;

2) The base station issues the configuration information of the available bandwidth and the protection bandwidth of the target cell at the network side for the terminal, and the configuration information comprises the following steps: LTE frequency start position: 869MHz; NR frequency onset position: 879.2MHz; BWP bandwidth: 150kHz; LTE resource block number: 65. Number of NR resource blocks: 32; subcarrier spacing SCS:15kHz; cyclic prefix type; and expanding the cyclic prefix. For NR cells, the base station configures a plurality of initial BWPs for the available frequency bands, and dynamically configures the working BWPs (including self-adaptive adjustment and network management mapping configuration) of the terminal along with time according to service change;

3) The base station configures measurement information for terminals in LTE and NR cells respectively, and specifically comprises: subband number for dedicated measurement configuration: 1. 6, 7 and 8; LTE cell to-be-measured band range: 869-878.75MHz; NR cell to-be-measured band range: 879.2-884MHz; CSI-RS of a frequency band to be detected and the transmitting power; measurement of indication of full band: TRUE.

4) The base station acquires broadband CQI reported by UE and subband CQI configured at a high layer, decodes CSI, RSRP and RSRQ, acquires and calculates and counts SINR_SCS (i) of each subcarrier and average interference intensity fed back by each user;

5) The base station divides the frequency band of the number 7 into interference bands by judging the difference value of the receiving level values of the frequency band of the number 1 and the frequency band of the number 7; the base station converts the frequency band of the number 8 into a non-interference band by judging the difference value of the receiving level values of the frequency band of the number 2 and the frequency band of the number 8; reporting the NR cell measurement results for each subcarrier respectively, and marking the physical resource block corresponding to the m-th subcarrier with the signal-to-noise ratio larger than a third threshold value as a non-interference zone and the n-th subcarrier with the signal-to-noise ratio larger than the third threshold value as an interference zone when the network management configuration subcarrier evaluation flow is available;

6) The base station judges that the base stations of the target cells of LTE and NR are co-located, and then the scheduling strategy is executed by integrating the measurement results;

7) Based on the interference condition obtained by the measurement result, the base station ranks LTE cell users with average signal noise exceeding a threshold value into a queue LTE-N with geographic positions closer to the base station, and ranks other LTE users into a queue LTE-F with geographic positions farther from the base station; the NR cell users with average signal noise exceeding the threshold value are listed in queues NR-N with geographic positions close to the base station, and other NR users are listed in queues NR-F with geographic positions far from the base station;

8) The base station invokes the historical service information of the user, calculates and evaluates whether the current speed meets the service requirement of the user, marks the priority weight W for the user, and the W=the speed of the service;

9) The base station dispatches the users with W & gt5 to the frequency bands with the numbers 1 and 6, periodically counts the length of the buffer queue, and judges that the LTE target cell and the NR target cell are high in load:

scheduling the users in the LTE-N in the LTE cell and the users in the LTE-N in the NR cell to an interference frequency band according to the sequence from the small W to the large W; placing users in LTE-N which cannot be scheduled to an interference frequency band in a buffer queue, and determining a transmission sequence according to the weight W;

executing a power control scheme, and adopting low-power configuration for cells of an interference frequency band;

Configuring uplink service information on an interference zone of an LTE cell and an interference zone of an NR cell to be sent in a time division mode, and preferentially sending high-weight service;

10 When the base station evaluates that the load of a certain system is higher in the step 8), the base station needs to perform frequency division or time division scheduling, and the base station sends the scheduling instruction to the target terminal; if the target cells are all in low load, the base station only sends necessary instructions through broadcast messages, and frequency domain scheduling is not needed.

11 Detecting that the network manager is not configured with a beamforming related function, the base station performs periodic statistics on the length of the buffer queue, and determines that the LTE target cell and the NR target cell are both in high load:

SIB information and downlink data corresponding to users in LTE-N are sent by using a frequency set with the number of 7 according to the sequence from small weight to large weight;

unicast information and downlink data corresponding to users in NR-N are sent by using a frequency set with the number of 8 according to the sequence from small weight to large weight;

and configuring uplink service information on the interference band of the LTE cell and the interference band of the NR cell to be sent in a time division mode, and preferentially sending the service with high weight.

12 The base station transmits MIB messages, SIB messages and downlink service data according to policies.

In summary, since the related protocol policy allows operators to re-plough the low frequency band (such as 800MHz and 900 MHz), but the low frequency band often has the problem of insufficient pre-configured bandwidth, the available bandwidth needs to be increased by spreading, so that the coverage and capacity expansion of the 5G network are guaranteed, and when spreading, the communication system has serious interference in the uplink and downlink directions due to overlapping of the co-sited LTE and NR guard bands. In order to ensure user experience in a bandwidth limited scene, the invention provides a wireless resource scheduling method, which can compress a protection band between two sections of frequency bands based on a scheme, flexibly respond to different service requirements and load conditions according to measurement feedback results, reduce inter-user interference caused by spread spectrum through an active queue management scheduling strategy and furthest meet different requirements of different user services on a system.

Compared with the prior art, the beneficial effects of the embodiment of the invention at least comprise: 1) The scheme of the invention solves the problem of uplink and downlink interference between the LTE frequency band and the NR frequency band caused by spread spectrum, and optimally allocates the frequency band resources, thereby reducing the occurrence of service interruption; 2) The scheme of the invention avoids obvious interference of the compressed guard band scheme to the terminal, ensures the feedback of the channel state information to be relatively accurate, and further ensures the reliable evaluation of the network to the link quality; 3) The scheme of the invention supports flexible scheduling under different loads, reduces the problem of packet loss when the cell is under high load, and ensures the experience of users under coverage; 4) When the terminal traffic is not large, the scheduling scheme of the invention switches the terminal to low-bandwidth operation, so that the power consumption of the terminal can be reduced; 5) The scheduling scheme of the invention is beneficial to the network side to adapt to the service requirement, the network management mapping scheme reduces the processing complexity, and the statically configured threshold is flexibly adapted to different scenes.

On the other hand, as shown in fig. 9, an embodiment of the present invention provides a radio resource scheduling apparatus 900, including: a first module 910, configured to obtain bandwidth configuration information, and determine an effective bandwidth range of the target cell according to the bandwidth configuration information; the target cell comprises a first system cell and a second system cell; a second module 920, configured to determine, according to the effective bandwidth range, a frequency resource situation of the target cell in combination with the target bandwidth; determining an initial scheduling strategy according to the frequency resource condition; a third module 930, configured to perform bandwidth configuration of the target cell by the base station based on the initial scheduling policy; the information configuration is carried out on the terminal of the target cell through the base station, and further feedback information of the terminal is periodically obtained; the bandwidth configuration comprises dividing a target frequency band of a target cell and configuring the target frequency band into a plurality of frequency sets; a fourth module 940, configured to decode a measurement result of the channel according to the feedback information, and divide the target frequency set into an interference band and a non-interference band based on the measurement result; a fifth module 950, configured to classify the target object of the target cell based on the measurement result when the uplink scheduling scheme is executed, and label the priority weight of the target object according to the historical service information of the target object; a sixth module 960, configured to schedule, based on the priority weights and in combination with a load condition of the target cell, the target object to each frequency set of the target frequency band, thereby performing uplink scheduling; a seventh module 970 is configured to determine a reference situation of the interference band based on the measurement result in combination with the load situation of the target cell when performing the downlink scheduling scheme, thereby performing downlink scheduling.

In some embodiments, the apparatus may further include: and an eighth module, configured to perform a measurement information exchange operation between the base station of the first standard cell and the base station of the second standard cell based on the measurement result of the first standard cell and the measurement result of the second standard cell when the base stations of the first standard cell and the second standard cell are different.

The content of the method embodiment of the invention is suitable for the device embodiment, the specific function of the device embodiment is the same as that of the method embodiment, and the achieved beneficial effects are the same as those of the method.

On the other hand, as shown in fig. 10, the embodiment of the present invention further provides an electronic device 1000, which includes at least one processor 1010, and at least one memory 1020 for storing at least one program for executing the foregoing radio resource scheduling method.

The content of the method embodiment of the invention is suitable for the electronic equipment embodiment, the functions of the electronic equipment embodiment are the same as those of the method embodiment, and the achieved beneficial effects are the same as those of the method.

Another aspect of the embodiments of the present invention also provides a computer-readable storage medium storing a program that is executed by a processor to implement the foregoing method.

It should be noted that, the computer readable medium shown in the embodiments of the present invention may be a computer readable signal medium or a computer readable storage medium, or any combination of the two. The computer readable storage medium can be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or a combination of any of the foregoing. More specific examples of the computer-readable storage medium may include, but are not limited to: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-Only Memory (ROM), an erasable programmable read-Only Memory (Erasable Programmable Read Only Memory, EPROM), flash Memory, an optical fiber, a portable compact disc read-Only Memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. In the context of this document, a computer readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device. In the present invention, however, the computer-readable signal medium may include a data signal propagated in baseband or as part of a carrier wave, with the computer-readable program code embodied therein. Such a propagated data signal may take any of a variety of forms, including, but not limited to, electro-magnetic, optical, or any suitable combination of the foregoing. A computer readable signal medium may also be any computer readable medium that is not a computer readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device. Program code embodied on a computer readable medium may be transmitted using any appropriate medium, including but not limited to: wireless, wired, etc., or any suitable combination of the foregoing.

The content of the method embodiment of the invention is applicable to the computer readable storage medium embodiment, the functions of the computer readable storage medium embodiment are the same as those of the method embodiment, and the achieved beneficial effects are the same as those of the method.

Embodiments of the present invention also disclose a computer program product or computer program comprising computer instructions stored in a computer readable storage medium. The computer instructions may be read from a computer-readable storage medium by a processor of a computer device, and executed by the processor, to cause the computer device to perform the foregoing method.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the invention, the scope of which is defined by the claims and their equivalents.

While the preferred embodiment of the present invention has been described in detail, the present invention is not limited to the embodiments, and those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention, and the equivalent modifications or substitutions are intended to be included in the scope of the present invention as defined in the appended claims.

Claims

1. A radio resource scheduling method, comprising:

determining the frequency resource condition of the target cell by combining the target bandwidth according to the effective bandwidth range; further determining an initial scheduling strategy according to the frequency resource condition;

based on the initial scheduling strategy, carrying out bandwidth configuration of the target cell through a base station; the base station configures information of the terminal of the target cell, and further periodically acquires feedback information of the terminal; the bandwidth configuration comprises dividing a target frequency band of the target cell into a plurality of frequency sets;

decoding a measurement result of a channel according to the feedback information, and dividing a target frequency set into an interference band and a non-interference band based on the measurement result;

when an uplink scheduling scheme is executed, classifying target objects of the target cells based on the measurement result, and labeling priority weights of the target objects according to historical service information of the target objects;

Based on the priority weight, scheduling the target object to each frequency set of the target frequency band in combination with the load condition of the target cell, and further executing uplink scheduling;

2. The radio resource scheduling method according to claim 1, wherein the bandwidth configuration information includes a bandwidth mapping relation and available frequency resources; the effective bandwidth range comprises a first effective bandwidth range and a second effective bandwidth range; the determining the effective bandwidth range of the target cell according to the bandwidth configuration information comprises the following steps:

determining a first protection bandwidth of the first system cell and a second protection bandwidth of the second system cell according to the bandwidth mapping relation;

determining a first initial bandwidth of the first standard cell and a second initial bandwidth of the second standard cell according to the available frequency resources;

according to the first initial bandwidth and the first protection bandwidth, determining an upper limit of an effective bandwidth and a lower limit of the effective bandwidth of the first standard cell, and further determining a first effective bandwidth range of the first standard cell;

And determining an effective bandwidth upper limit and an effective bandwidth lower limit of the second standard cell according to the second initial bandwidth and the second protection bandwidth, and further determining a second effective bandwidth range of the second standard cell.

3. The radio resource scheduling method according to claim 1, wherein the decoding the measurement result of the channel according to the feedback information, dividing the target frequency set into an interference band and a non-interference band based on the measurement result, comprises:

decoding a measurement result of a channel according to the feedback information, and further determining a channel state parameter according to the measurement result;

based on the channel state parameters, the base station is used for counting the signal-to-interference-and-noise ratio of each subcarrier, so as to count the average drying intensity fed back by each target object;

and dividing the target frequency set into an interference band and a non-interference band according to the signal-to-interference-and-noise ratio and the average dry strength and combining a preconfigured threshold value.

4. The radio resource scheduling method according to claim 1, characterized in that the method further comprises:

and when the base stations of the first standard cell and the second standard cell are different, executing measurement information exchange operation between the base station of the first standard cell and the base station of the second standard cell based on the measurement result of the first standard cell and the measurement result of the second standard cell.

5. The radio resource scheduling method according to claim 1, wherein said labeling the priority weights of the target objects according to the history traffic information of the target objects comprises:

determining the service rate requirement of the target object according to the historical service information, and labeling the priority weight of the target object according to the service rate requirement;

wherein the priority weight is positively correlated with the traffic rate requirement.

6. The radio resource scheduling method according to claim 1, wherein the load situation comprises a high load and a low load; the target frequency band comprises a first target frequency band corresponding to the first standard cell and a second target frequency band corresponding to the second standard cell; the scheduling the target object to each frequency set of the target frequency band based on the priority weight in combination with the load condition of the target cell includes:

when the load conditions of the first standard cell and the second standard cell are low loads, carrying out idle processing on the interference zone;

when the load condition of the first standard cell is high load and the load condition of the second standard cell is low load, idle processing is carried out on the interference zone of the second standard cell, the target object of the first standard cell is scheduled to the frequency set, which is close to the edge of one side of the second target frequency band, in the first target frequency band according to the order of the priority weight from small to large until the frequency set at the edge reaches full load, and the interference zone of the first standard cell is referenced to schedule the rest target objects until the load condition of the first standard cell returns to a preset condition;

When the load condition of the first standard cell is low load and the load condition of the second standard cell is high load, idle processing is carried out on the interference zone of the first standard cell, the target object of the second standard cell is scheduled to the frequency set, which is close to the edge of one side of the first target frequency band, in the second target frequency band according to the order of the priority weight from small to large until the frequency set at the edge reaches full load, and the interference zone of the second standard cell is referenced to schedule the rest target objects until the load condition of the second standard cell returns to a preset condition;

when the load conditions of the first standard cell and the second standard cell are high loads, the target object of each cell is scheduled to the frequency set in the middle of the target frequency band corresponding to each cell according to the order of the priority weights from large to small, the target object of each cell is scheduled to the interference band corresponding to each cell according to the order of the priority weights from small to large, and uplink service information on the interference band corresponding to each cell is further configured to be sent in a time division mode; the sending sequence of the uplink service information is positively correlated with the magnitude of the priority weight.

7. The radio resource scheduling method according to claim 1, wherein the load situation comprises a high load and a low load; the target frequency band comprises a first target frequency band corresponding to the first standard cell and a second target frequency band corresponding to the second standard cell; and determining the reference condition of the interference band based on the measurement result and in combination with the load condition of the target cell, so as to execute downlink scheduling, wherein the method comprises the following steps:

when the load condition of the first standard cell is high load and the load condition of the second standard cell is low load, idle processing is carried out on the interference zone of the second standard cell, and downlink data and broadcast information of the target object are sent by utilizing the frequency set, which is close to the edge of one side of the second target frequency band, in the first target frequency band according to the order from small to large of the priority weight of the target object of the first standard cell until the frequency set at the edge is full load, and the interference zone referring to the first standard cell is used for sending the downlink data and the broadcast information of the rest target objects;

When the load condition of the first standard cell is low load and the load condition of the second standard cell is high load, idle processing is carried out on the interference zone of the first standard cell, and downlink data and broadcast information of the target object are sent by utilizing the frequency set, which is close to the edge of one side of the first target frequency band, in the second target frequency band according to the order from small to large of the priority weight of the target object of the second standard cell until the frequency set at the edge is full load, and the interference zone of the second standard cell is referenced to send the downlink data and the broadcast information of the rest target objects;

when the load conditions of the first standard cell and the second standard cell are high loads, according to the order of the priority weights of the target objects of the cells from small to large, transmitting downlink data and broadcast information of the target objects by using the frequency set of the target frequency band edge corresponding to each cell until the frequency set of the edge is fully loaded, and transmitting the downlink data and the broadcast information of the residual target objects of the cells by referring to the interference bands corresponding to each cell, so as to configure downlink service information on the interference bands corresponding to each cell to be transmitted in a time division mode; the sending sequence of the downlink service information is positively correlated with the magnitude of the priority weight.

8. A radio resource scheduling apparatus, comprising:

a second module, configured to determine, according to the effective bandwidth range, a frequency resource situation of the target cell in combination with a target bandwidth; further determining an initial scheduling strategy according to the frequency resource condition;

a third module, configured to perform bandwidth configuration of the target cell through a base station based on the initial scheduling policy; the base station configures information of the terminal of the target cell, and further periodically acquires feedback information of the terminal; the bandwidth configuration comprises dividing a target frequency band of the target cell into a plurality of frequency sets;

a fourth module, configured to decode a measurement result of a channel according to the feedback information, and divide a target frequency set into an interference band and a non-interference band based on the measurement result;

a fifth module, configured to classify, when an uplink scheduling scheme is executed, a target object of the target cell based on the measurement result, and label a priority weight of the target object according to historical service information of the target object;

A sixth module, configured to schedule, based on the priority weights, the target objects to the respective frequency sets of the target frequency bands in combination with a load situation of the target cell, thereby performing uplink scheduling;

and a seventh module, configured to determine, when the downlink scheduling scheme is executed, a reference condition of the interference band in combination with a load condition of the target cell based on the measurement result, and then execute downlink scheduling.

9. An electronic device comprising a processor and a memory;

the memory is used for storing programs;

the processor executing the program implements the method of any one of claims 1 to 7.

10. A computer storage medium in which a processor executable program is stored, characterized in that the processor executable program is for implementing the method according to any one of claims 1 to 7 when being executed by the processor.