WO2016169122A1

WO2016169122A1 - Data scheduling method and apparatus

Info

Publication number: WO2016169122A1
Application number: PCT/CN2015/082935
Authority: WO
Inventors: 张云飞; 付婷; 朱亚军
Original assignee: 宇龙计算机通信科技(深圳)有限公司
Priority date: 2015-04-24
Filing date: 2015-06-30
Publication date: 2016-10-27
Also published as: CN105578475A; CN105578475B

Abstract

The present invention relates to the technical field of wireless communications. Disclosed are a data scheduling method and apparatus. The method comprises: a first base station acquires a first service traffic of a cell covered by the first base station; the first base station determines, according to the first service traffic, a target spectrum resource corresponding to the first service traffic from a spectrum resource pool corresponding to a cooperating set where the first base station is located, wherein target spectrum resources which are determined by all base stations in the cooperating set and correspond to service traffics of the base stations are not overlapped; and the first base station schedules, based on the target spectrum resource, data of a user equipment in the cell covered by the first base station. Implementing embodiments of the present invention can reduce overheads of a base station and reduce performance requirements for the base station.

Description

Data scheduling method and device

This application claims priority to Chinese Patent Application No. CN201510201040.7, entitled "A Data Scheduling Method and Apparatus" on April 24, 2015, the entire contents of which are incorporated herein by reference. In the application.

Technical field

The present invention relates to the field of wireless communication technologies, and in particular, to a data scheduling method and apparatus.

Background technique

At present, in order to further improve the capacity of wireless communication systems, the miniaturization of base stations and the densification of network nodes have become an inevitable development trend. In the future, ultra-dense network (UDN) deployment will occur, that is, in a macro station. Hundreds of small base stations may be deployed within the coverage. At this time, for a small-sized base station in a UDN network, a large number of base stations may cause strong interference. Therefore, multiple base stations need to cooperate, that is, Coordinated Multiple Point (CoMP) technology. Effectively reduce interference in the network and increase user data rate. The plurality of base stations that cooperate with each other is a collaborative set.

However, in practical applications, when a user performs data scheduling using a CoMP scheme, such as a Joint Transmission (JT) scheme, the base stations of the collaboration set need to exchange data information of the served users, and the base stations also need to frequently Interacting the physical resource block (Physical Resource Block, PRB) location information of the user scheduling, so that the cooperative base station determines the PRB location of the scheduling resource of the user, that is, determining the spectrum resource used by the cooperative base station to perform data scheduling on the user, thereby performing data Scheduling. That is to say, a large amount of information interaction needs to be performed between multiple base stations in the cooperation set to perform data scheduling on the user, which not only increases the overhead of the base station, but also increases the performance requirement for the base station.

Summary of the invention

The technical problem to be solved by the present invention is to provide a data scheduling method and apparatus, which can reduce the overhead of a base station and reduce performance requirements for a base station.

The invention provides a data scheduling method, comprising:

Obtaining, by the first base station, a first traffic volume of the first base station coverage cell;

Determining, by the first base station, a target spectrum resource corresponding to the first traffic quantity from a spectrum resource pool corresponding to the cooperation set in which the first base station is located, where the first base station is in the collaboration set The target spectrum resources corresponding to the traffic volume of the base station determined by each base station do not overlap each other;

The first base station performs data scheduling on the user equipment of the first base station coverage cell based on the target spectrum resource.

Optionally, the first base station determines, according to the first traffic quantity, a target spectrum resource corresponding to the first traffic quantity from a spectrum resource pool corresponding to the cooperation set of the first base station, including:

Receiving, by the first base station, a second traffic volume sent by the remaining base stations other than the first base station in the cooperation set where the first base station is located;

The first base station calculates a sum of the first traffic volume and the second traffic volume sent by the remaining base stations, to obtain a sum of traffic volumes;

The first base station calculates a proportion of the first traffic volume in the sum of the traffic volumes;

Determining, by the first base station, a target spectrum resource corresponding to the proportional value from a spectrum resource pool corresponding to the cooperation set according to the ratio value.

Sending, by the first base station, a spectrum information request carrying the first traffic volume to a central control node of the cooperation set where the first base station is located, so that the central control node collects the first traffic volume in the collaboration set a ratio of the proportion of the traffic of each of the base stations, and a target spectrum resource corresponding to the ratio value is allocated to the first base station from the spectrum resource pool corresponding to the cooperation set;

Receiving, by the first base station, spectrum information that is returned by the central control node in response to the spectrum information request, where the spectrum information indicates the target spectrum resource allocated by the central control node to the first base station.

Optionally, the first traffic volume is an uplink traffic volume, and the first base station acquires the first traffic volume of the first base station coverage cell, including:

Receiving, by the first base station, the uplink traffic reported by each user equipment of the coverage area of the first base station The information, and the sum of the uplink traffic in the uplink traffic information reported by each user equipment is used as the first traffic volume of the first base station coverage cell.

Optionally, after the first base station determines, according to the first traffic quantity, a target spectrum resource corresponding to the first traffic volume from a spectrum resource pool corresponding to the cooperation set in which the first base station is located, The method also includes:

The first base station acquires a new first traffic volume of the first base station coverage cell, and detects whether the absolute value of the difference between the new first traffic volume and the previous acquired first traffic volume is higher than a preset. First threshold

If the absolute value is higher than the first threshold, the first base station determines, according to the new first traffic quantity, a new one corresponding to the new first traffic quantity from the spectrum resource pool. Target spectrum resources.

Correspondingly, the present invention further provides a data scheduling device, where the device is disposed in the first base station, and includes:

An information acquiring module, configured to acquire a first traffic volume of the first base station coverage cell;

a spectrum determining module, configured to determine, according to the first traffic volume acquired by the information acquiring module, a target spectrum resource corresponding to the first traffic volume from a spectrum resource pool corresponding to the cooperation set in which the first base station is located The target spectrum resources corresponding to the traffic volume of the base station determined by each base station in the cooperation set do not overlap each other;

And a scheduling module, configured to perform data scheduling on the user equipment of the first base station coverage cell based on the target spectrum resource determined by the spectrum determining module.

Optionally, the spectrum determining module includes:

An information receiving unit, configured to receive a second traffic volume sent by the remaining base stations except the first base station in the cooperation set where the first base station is located;

a ratio obtaining unit, configured to calculate a sum of the first traffic volume and the second traffic volume sent by the remaining base stations, obtain a sum of traffic volumes, and calculate a proportion of the first traffic volume in the sum of the traffic volumes Proportional value

a first determining unit, configured to determine, according to the scale value acquired by the ratio acquiring unit, a target spectrum resource corresponding to the proportional value from a spectrum resource pool corresponding to the cooperation set.

Optionally, the spectrum determining module includes:

An information sending unit, configured to send, to a central control node of the collaboration set where the first base station is located, a spectrum information request that carries the first traffic, so that the central control node collects the first traffic volume in the collaboration a ratio of the proportion of the traffic of each of the set base stations, and a target spectrum resource corresponding to the ratio value is allocated to the first base station from the spectrum resource pool corresponding to the cooperation set;

a second determining unit, configured to receive spectrum information that is returned by the central control node in response to the spectrum information request, where the spectrum information indicates the target spectrum resource allocated by the central control node to the first base station.

Optionally, the first service volume is an uplink traffic volume; and the information acquiring module is specifically configured to:

Receiving, by the first base station, the uplink traffic information reported by each user equipment of the coverage cell, and using the sum of the uplink traffic in the uplink traffic information reported by each user equipment as the first basement coverage cell The first amount of business.

Optionally, the information acquiring module is further configured to acquire a new first traffic volume of the first base station coverage cell, and detect a difference between the new first traffic volume and the previous acquired first traffic volume. Whether the absolute value is higher than a preset first threshold;

The spectrum determining module is further configured to determine, from the spectrum resource pool, the new first service according to the new first traffic when the absolute value is higher than the first threshold The amount corresponds to the new target spectrum resource.

Compared with the prior art, the present invention has the following beneficial effects:

In the present invention, the target spectrum resource corresponding to the service quantity is determined from the spectrum resource pool corresponding to the cooperation set of the base station by acquiring the traffic volume of the coverage area of the base station, so that the base station can be based on the target spectrum resource pair. The base station covers the user equipment of the cell for data scheduling, and reduces information interaction between the base stations in the cooperation set. Further, the requirements for the information backhaul link between the base stations can be reduced, the overhead of the base station is reduced, the performance requirements of the base station are reduced, and the network throughput is improved.

DRAWINGS

In order to more clearly illustrate the present invention or the technical solutions in the prior art, the drawings to be used in the embodiments will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, Other drawings can also be obtained from these figures.

1 is a schematic flowchart of a data scheduling method according to an embodiment of the present invention;

2 is a schematic diagram of occupying spectrum resources of each base station in a cooperation set according to an embodiment of the present invention;

3 is a schematic flowchart of another data scheduling method according to an embodiment of the present invention;

4 is a schematic flowchart of still another data scheduling method according to an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of a data scheduling apparatus according to an embodiment of the present invention;

FIG. 6 is a schematic structural diagram of another data scheduling apparatus according to an embodiment of the present disclosure;

FIG. 7 is a schematic structural diagram of still another data scheduling apparatus according to an embodiment of the present invention.

detailed description

The technical solutions in the present invention are clearly and completely described in the following with reference to the accompanying drawings. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

The present invention provides a data scheduling method and apparatus, which can allocate spectrum resources to base stations in the cooperation set based on the spectrum resources shared by the cooperation set, and perform data scheduling on the user equipment of the base station coverage cell based on the allocated spectrum resources. Thereby reducing the overhead of the base station and reducing the performance requirements for the base station. The details are described below separately.

Please refer to FIG. 1. FIG. 1 is a schematic flowchart of a data scheduling method according to the present invention. Specifically, the data scheduling method shown in FIG. 1 may include the following steps.

S101: The first base station acquires a first traffic volume of the first base station coverage cell.

It should be noted that the first traffic volume may be the traffic volume of the corresponding cell of the first base station in the uplink direction or the traffic volume of the downlink direction. If the first traffic is the uplink traffic, that is, the uplink traffic, the user equipment (User Equipment, UE for short) of the first base station coverage cell needs to report the uplink traffic of the UE to the first base station. The first base station receives the traffic information including the uplink traffic reported by each UE of the first base station coverage cell, and uses the sum of the uplink traffic reported by each UE as the first basement coverage cell. The first traffic volume, thereby obtaining the first traffic volume of the first base station coverage cell.

The first base station may be any one of the cooperation groups (also referred to as a cooperative cluster) in which the first base station is located, and the first traffic quantity may specifically be that the first base station performs service quality on different services ( Quality of Service (QoS) distinguishes the calculated equivalent traffic.

S102: The first base station determines, according to the first traffic quantity, a target spectrum resource corresponding to the first traffic quantity from a spectrum resource pool corresponding to the cooperation set in which the first base station is located, where the collaboration The target spectrum resources corresponding to the traffic of the base station determined by each base station in the set do not overlap each other.

Specifically, the spectrum resource pool includes a total spectrum resource allocated in advance to each base station in the cooperation set, where the target spectrum resource is the first base station in the spectrum resource pool allocated to the first base station. a spectrum resource that can be used, and the target spectrum resources corresponding to the traffic volume of the base station determined by each base station in the cooperation set do not overlap each other, thereby ensuring that there is no interference between the cells in the cooperation set in the data domain. . The target spectrum resource corresponding to the first traffic volume may refer to a spectrum resource that is proportional to the first traffic volume.

In a specific embodiment, the amount of traffic in the uplink direction (ie, the uplink traffic volume) of the corresponding cell of each base station in the coordinated set may be counted, so that the uplink traffic volume corresponding to each base station is determined from the spectrum resource pool according to the uplink traffic volume. The target spectrum resource; and the traffic volume of the corresponding cell in the downlink in the coordinated set (ie, the downlink traffic) is calculated, and the downlink traffic corresponding to each base station is determined according to the downlink traffic volume. Target spectrum resources. That is to say, each base station in the cooperation set can determine from the spectrum resource pool according to the traffic volume of the current cell (the uplink direction, that is, the corresponding uplink traffic volume, and the downlink direction, that is, the corresponding downlink traffic volume) in the uplink and downlink directions, respectively. The target spectrum resources that do not overlap each other are used as transmission resources of the current cell. For example, please refer to FIG. 2, which is a schematic diagram of the spectrum resources occupied by each base station in a collaboration set according to an embodiment of the present invention. As shown in FIG. 2, the collaboration set includes five base station coverages of cell 1-cell 5. a cell in which the spectrum resources used by the five cells in the uplink direction or the downlink direction do not overlap each other.

Optionally, the first base station determines, according to the first traffic quantity, a target spectrum resource corresponding to the first traffic quantity from a spectrum resource pool corresponding to the cooperation set of the first base station, which may be specifically The first base station receives a second traffic volume sent by the remaining base stations other than the first base station in the cooperation set in which the first base station is located; the first base station calculates the first traffic volume and the rest a sum of the second traffic sent by the base station to obtain a sum of traffic; the first base station calculates the first service And the first base station determines, according to the proportional value, a target spectrum resource corresponding to the proportional value from a spectrum resource pool corresponding to the cooperation set.

Optionally, the first base station determines, according to the first traffic quantity, a target spectrum resource corresponding to the first traffic quantity from a spectrum resource pool corresponding to the cooperation set in which the first base station is located, and may also be specific The first base station sends a spectrum information request carrying the first traffic amount to a central control node of the cooperation set where the first base station is located, so that the central control node collects the first traffic volume in the Allocating a ratio of the proportion of the traffic of each base station of the coordinated set, and allocating the target spectrum resource corresponding to the proportional value to the first base station from the spectrum resource pool corresponding to the cooperation set; Receiving, by the base station, spectrum information returned by the central control node in response to the spectrum information request, the spectrum information indicating the target spectrum resource allocated by the central control node to the first base station. The central control node may be a certain base station in the cooperation set, for example, an optimal one of the base stations, or a separately configured node device in the collaboration set, which is not limited in the embodiment of the present invention.

Specifically, the target spectrum resource corresponding to the proportional value may refer to a spectrum resource that is proportional to the proportional value.

S103: The first base station performs data scheduling on the user equipment of the first base station coverage cell based on the target spectrum resource.

Further, after the first base station determines the target spectrum resource corresponding to the first traffic quantity from the spectrum resource pool corresponding to the cooperation set of the first base station, the first base station determines, according to the first traffic quantity, The first base station may reacquire a new first traffic volume of the first base station coverage cell according to a preset time interval; the first base station may use the spectrum resource according to the new first traffic volume. A new target spectrum resource corresponding to the new first traffic is determined in the pool, so that the spectrum resource occupied by the corresponding cell of the first base station, that is, the target spectrum resource, is updated.

Further, after the first base station determines the target spectrum resource corresponding to the first traffic quantity from the spectrum resource pool corresponding to the cooperation set of the first base station, the first base station determines, according to the first traffic quantity, The first base station may also acquire a new first traffic volume of the first base station coverage cell, and detect whether the absolute value of the difference between the new first traffic volume and the previous acquired first traffic volume is higher than a preset first threshold; if the absolute value is higher than the first threshold, the first base station determines, from the spectrum resource pool, the new one according to the new first traffic volume The first business volume corresponds to the new The target spectrum resource, thereby updating the spectrum resource occupied by the corresponding cell of the first base station, that is, the target spectrum resource. The first threshold may be a pre-configured traffic change value of the system.

The embodiment of the present invention can obtain the target spectrum resource corresponding to the service quantity from the spectrum resource pool corresponding to the cooperation set of the base station by acquiring the traffic volume of the coverage area of the base station, so that the base station can be based on the target spectrum resource pair. The base station covers the user equipment of the cell for data scheduling, and reduces information interaction between the base stations in the cooperation set. Further, the requirement for the information backhaul link between the base stations can be reduced, the base station overhead is reduced, the performance requirements for the base station are reduced, and the network throughput is improved.

Referring to FIG. 3, FIG. 3 is a schematic flowchart of another data scheduling method provided by the present invention. Specifically, the data scheduling method shown in FIG. 3 may include the following steps.

S201: The first base station acquires a first traffic volume of the first base station coverage cell.

The first traffic volume may be the traffic volume of the corresponding cell of the first base station in the uplink direction or the traffic volume of the downlink direction. If the first traffic is the uplink traffic, that is, the uplink traffic, the first base station acquires the first traffic of the first cell coverage cell, and may be specifically: the first base station receives the first traffic The base station covers the uplink traffic information reported by each user equipment of the cell, and uses the sum of the uplink traffic in the uplink traffic information reported by each user equipment as the first traffic volume of the first basement coverage cell. . That is, the UE needs to report the uplink traffic volume of the UE to the base station of the cell, so that the first base station acquires the traffic volume of the coverage cell of the first base station, that is, the first traffic volume.

S202: The first base station receives a second traffic volume sent by the remaining base stations except the first base station in the cooperation set where the first base station is located.

S203: The first base station calculates a sum of the first traffic volume and the second traffic volume sent by the remaining base stations, obtains a sum of traffic volumes, and calculates that the first traffic volume accounts for the total traffic volume. The ratio value.

S204: The first base station determines, according to the ratio value, a target spectrum resource corresponding to the proportional value from a spectrum resource pool corresponding to the cooperation set.

In a specific embodiment, each base station in the cooperation set may notify other base stations in the set of the traffic volume of the corresponding cell of the base station through an inter-base station interface, for example, notify other base stations in the set to correspond to the base station in a multicast manner. The traffic volume of the cell is such that each base station in the cooperation set can obtain the traffic volume of the coverage area of other base stations in the cooperation set. The first base station receives the After the traffic volume sent by the base station other than the first base station, that is, the second traffic volume, the traffic volume of the first traffic volume in the cooperation set (ie, the first traffic volume and the second traffic volume) may be calculated. The ratio of the ratio of the sum of the metrics is determined by the target spectrum resource corresponding to the ratio value from the spectrum resource pool allocated for the cooperation set as the spectrum resource used by the first base station coverage cell.

Specifically, the determined target spectrum resource may be a spectrum resource that is proportional to a ratio of the first traffic volume in a total traffic volume of the cooperation set, that is, the first traffic volume is in the sum of the traffic volume. The larger the proportion value is, the more the target spectrum resources are allocated to the first base station from the spectrum resource pool; otherwise, the less. In addition, a traffic threshold and a spectrum resource corresponding to the traffic threshold may be set. If the first base station does not currently have a service, or the current service is less, that is, the obtained traffic volume is lower than the traffic threshold, then Allocating a spectrum resource corresponding to the traffic threshold to the first base station, and using the spectrum resource corresponding to the traffic threshold as a target spectrum resource for performing data scheduling by the first base station, so that the base station can start immediately after the service is subsequently arrived. transmission. Further, the foregoing traffic may be an equivalent traffic calculated after the base station performs QoS differentiation on different services.

S205: The first base station performs data scheduling on the user equipment of the first base station coverage cell based on the target spectrum resource.

Further, the first base station may further update the spectrum resource occupied by the current cell by using a preset time interval, for example, every 500 ms, that is, re-determining the target spectrum resource used by the first base station, so that the first base station is based on The re-determined target spectrum resource performs data scheduling on the user equipment of the first base station coverage cell.

Further, the first base station may also be updated in a non-period manner, for example, when the traffic volume of the corresponding cell of the first base station changes greatly, and the difference between the two statistics traffic exceeds a certain threshold, The spectrum resource occupied by the current cell re-determines the target spectrum resource used by the first base station to perform data scheduling based on the re-determined target spectrum resource. Specifically, the first base station may reacquire the first traffic volume of the first base station coverage cell, that is, the new first traffic volume, and detect the difference between the new first traffic volume and the previous acquired first traffic volume. Whether the absolute value is higher than a preset first threshold, where the first threshold is pre-configured, and the first threshold corresponding to each base station in the cooperation set may be set differently. When the absolute value is higher than the first threshold, it may indicate that the current traffic volume is relatively a large change, the first base station may re-determine a new target spectrum resource corresponding to the new first traffic quantity from the spectrum resource pool corresponding to the cooperation set according to the new first traffic volume, so that the first A base station performs data scheduling based on the re-determined target spectrum resource, that is, a new target spectrum resource. The first threshold may be a pre-configured traffic change value, such as 20 bits. If the difference between the two acquired traffic exceeds 20 bits, it indicates that the current traffic is sent with a large change. Initiating to update the spectrum resources occupied by the current cell, and re-determining the target spectrum resources used by each base station in the coordinated set.

It should be noted that if there is a non-redistributable spectrum resource in the configured spectrum resource pool, if some part of the spectrum resource in the spectrum resource pool has been allocated to a certain UE in the cooperation set for semi-persistent scheduling, A part of the spectrum resource is a non-redistributable spectrum resource, which needs to be marked as a non-redistributable state, so that the other cell base station cannot use the part of the spectrum resource until the semi-persistent scheduling on the part of the spectrum resource ends. That is, when determining the target spectrum resource that the base station can use according to the traffic volume, the non-redistributable spectrum resource needs to be removed from the spectrum resource pool, and then according to the traffic volume of each base station coverage cell in the collaboration set. The sum of the traffic (the traffic corresponding to the semi-persistent scheduling is not calculated within the traffic volume of the coverage cell of the base station, nor calculated within the sum of the traffic) is removed from the spectrum resource pool. A spectrum resource corresponding to the proportional value is selected as a target spectrum resource for data scheduling in the remaining spectrum resources after the redistributed spectrum resource.

In the embodiment of the present invention, the first base station may obtain the first traffic volume of the coverage cell of the base station, and calculate the first traffic volume in the collaboration set according to the received second traffic volume sent by other base stations in the cooperation set. a ratio of the proportion of the traffic, so that the target spectrum resource corresponding to the ratio is determined from the spectrum resource pool corresponding to the cooperation set, so that the first base station can cover the first base station based on the target spectrum resource. The UE in the cell performs data scheduling, which reduces information interaction between the base stations in the cooperative set. Further, since the cooperative base stations in the prior art require the high-capacity and low-latency inter-base station backhaul link when performing data information exchange between the served users, the user needs to additionally measure and feed back between the user and the cooperative base station. The channel information increases the performance requirements for the backhaul link between the base stations and the user. In the embodiment of the present invention, since the interaction of the user data information is not required, the requirement for the information backhaul link between the base stations can be reduced, and the UE in the cooperation set does not need to further the base station in the cooperation set. Perform a large amount of channel information measurement and feedback, which reduces the base station and The performance requirements of the UE reduce the overhead of the base station and the UE, especially in the case of low or medium load of the network, and improve the network throughput.

Referring to FIG. 4, FIG. 4 is a schematic flowchart of still another data scheduling method provided by the present invention. Specifically, the data scheduling method shown in FIG. 4 may include the following steps.

S301: The first base station acquires a first traffic volume of the first base station coverage cell.

S302: The first base station sends, to the central control node of the collaboration set where the first base station is located, a spectrum information request that carries the first traffic, so that the central control node collects the first traffic volume in the A ratio of the proportion of the traffic of each base station of the coordinated set, and a target spectrum resource corresponding to the proportional value is allocated to the first base station from the spectrum resource pool corresponding to the cooperation set.

S303: The first base station receives spectrum information that is returned by the central control node in response to the spectrum information request, where the spectrum information indicates the target spectrum resource allocated by the central control node to the first base station.

In a specific embodiment, the central control node may be configured in the collaboration set, and the central control node may be a base station that is optimally configured in the cooperation set, or may be a separately configured node device, which is not implemented in the embodiment of the present invention. limited. Specifically, each base station in the cooperation set may send the traffic volume of the cell corresponding to the base station to the central control node in the cooperation set, and the central control node collects the traffic volume ratio of the cell corresponding to each base station in the cooperation set, thereby In the spectrum resource pool, each base station is allocated a corresponding proportion of spectrum resources, that is, target spectrum resources.

Specifically, the target spectrum resource allocated to the first base station may be a spectrum resource proportional to a ratio of the first traffic volume in a sum of traffic volume of the cooperation set, that is, the first traffic volume is in the The larger the ratio of the traffic sum, the more the target spectrum resources are allocated to the first base station from the spectrum resource pool; otherwise, the less. In addition, a traffic threshold and a spectrum resource corresponding to the traffic threshold may be set. If the first base station does not currently have a service, or the current service is less, that is, the obtained traffic volume is lower than the traffic threshold, then Allocating a spectrum resource corresponding to the traffic threshold to the first base station, and using the spectrum resource corresponding to the traffic threshold as a target spectrum resource for performing data scheduling by the first base station, so that the base station can start immediately after the service is subsequently arrived. transmission. The spectrum information request includes the first traffic information, and may further include configuration information such as a base station identifier of the first base station, so that the central control node allocates a target spectrum resource to the first base station. Further, the foregoing traffic may be an equivalent traffic calculated after the base station performs QoS differentiation on different services.

S304: The first base station performs data scheduling on the user equipment of the first base station coverage cell based on the target spectrum resource.

Further, the first base station may further update the spectrum resource occupied by the current cell by using a preset time interval, for example, every 500 ms, that is, re-determining the target spectrum resource used by the first base station, so that the first base station is based on The re-determined target spectrum resource performs data scheduling.

Further, the first base station may also be updated in a non-period manner, for example, when the traffic volume of the corresponding cell of the first base station changes greatly, and the difference between the two statistics traffic exceeds a certain threshold, The spectrum resource occupied by the current cell re-determines the target spectrum resource used by the first base station to perform data scheduling based on the re-determined target spectrum resource. Specifically, the first base station may reacquire the first traffic volume of the first base station coverage cell, that is, the new first traffic volume, and detect the difference between the new first traffic volume and the previous acquired first traffic volume. Whether the absolute value is higher than the preset first threshold. The first threshold is pre-configured, and the first threshold corresponding to each base station in the collaboration set may be set differently. When the absolute value is higher than the first threshold, it may indicate that the current traffic volume changes greatly, and the first base station may re-determine from the spectrum resource pool corresponding to the cooperation set according to the new first traffic volume. And a new target spectrum resource corresponding to the new first traffic, so that the first base station performs data scheduling based on the re-determined target spectrum resource, that is, the new target spectrum resource. The first threshold may be a pre-configured traffic change value, such as 20 bits. If the difference between the two acquired traffic exceeds 20 bits, it indicates that the current traffic is sent with a large change. Initiating update of the spectrum resources occupied by the cell, and re-determining the target spectrum used by each base station in the coordinated set Resources.

In the embodiment of the present invention, the first base station may obtain the first traffic volume of the coverage cell of the base station, and send the first traffic volume to the central control node in the current collaboration set, so that the central control node counts the a ratio of the traffic volume in the sum of the traffic of the cooperation set, and allocating the target spectrum resource corresponding to the proportional value to the first base station from the spectrum resource pool corresponding to the cooperation set, and the target spectrum resource The information is returned to the first base station, so that the first base station can perform data scheduling on the UE in the first base station coverage cell based on the target spectrum resource, thereby reducing information interaction between the base stations in the cooperation set. Further, since the cooperative base stations in the prior art require the high-capacity and low-latency inter-base station backhaul link when performing data information exchange between the served users, the user needs to additionally measure and feed back between the user and the cooperative base station. The channel information increases the performance requirements for the backhaul link between the base stations and the user. In the embodiment of the present invention, since the interaction of the user data information is not required, the requirement for the information backhaul link between the base stations can be reduced, and the UE in the cooperation set does not need to further the base station in the cooperation set. A large amount of channel information measurement and feedback is performed, that is, the performance requirements for the base station and the UE are reduced, and the overhead of the base station and the UE is reduced, especially in the case of low or medium load of the network, and the network throughput is improved.

Referring to FIG. 5, FIG. 5 is a schematic structural diagram of a data scheduling apparatus according to the present invention. Specifically, the data scheduling apparatus shown in FIG. 5 may include an information acquiring module 11, a spectrum determining module 12, and a scheduling module 13. among them,

The information acquiring module 11 is configured to acquire a first traffic volume of the first base station coverage cell.

It should be noted that the device may be disposed in the first base station. The first traffic volume may be the traffic volume of the corresponding cell of the first base station in the uplink direction or the traffic volume of the downlink direction. If the first traffic is the uplink traffic, that is, the uplink traffic, the UEs of the first base station coverage cell need to report the uplink traffic of the UE to the first base station, and the information acquiring module 11 The method may be specifically configured to: receive the uplink traffic information reported by each user equipment of the first base station coverage cell, and use the sum of the uplink traffic volume in the uplink traffic information reported by each user equipment as the The first base station covers the first traffic of the cell. Thereby obtaining the first traffic volume of the first base station coverage cell.

Specifically, the first base station may be any one of the cooperation groups (also referred to as a cooperative cluster) where the first base station is located, and the first traffic volume may be that the first base station performs quality of service QoS for different services. The equivalent amount of business calculated after differentiation.

The spectrum determining module 12 is configured to determine, according to the first traffic volume acquired by the information acquiring module 11, from the spectrum resource pool corresponding to the cooperation set in which the first base station is located, corresponding to the first traffic volume. The target spectrum resource, wherein the target spectrum resources corresponding to the traffic of the base station determined by each base station in the cooperation set do not overlap each other.

Specifically, the spectrum resource pool includes a total spectrum resource allocated in advance to each base station in the cooperation set, where the target spectrum resource is the first base station in the spectrum resource pool allocated to the first base station. a spectrum resource that can be used, and the target spectrum resources corresponding to the traffic volume of the base station determined by each base station in the cooperation set do not overlap each other, thereby ensuring that there is no interference between the cells in the cooperation set in the data domain. .

The scheduling module 13 is configured to perform data scheduling on the user equipment of the first base station coverage cell based on the target spectrum resource determined by the spectrum determining module 12.

In a specific embodiment, after the spectrum determining module 12 determines the target spectrum resource, the scheduling module 13 may perform data scheduling on the user equipment of the first base station coverage cell based on the target spectrum resource.

The embodiment of the present invention can obtain the target spectrum resource corresponding to the service quantity from the spectrum resource pool corresponding to the cooperation set of the base station by acquiring the traffic volume of the coverage area of the base station, so that the base station can be based on the target spectrum resource pair. The base station covers the user equipment of the cell for data scheduling, and reduces information interaction between the base stations in the cooperation set. Further, the information return chain between the base stations can also be reduced. The requirements of the road reduce the base station overhead and reduce the performance requirements of the base station, thereby improving the network throughput.

Further, please refer to FIG. 6. FIG. 6 is a schematic structural diagram of another data scheduling apparatus according to the present invention. Specifically, the apparatus according to the embodiment of the present invention may be used in the data scheduling apparatus in the embodiment corresponding to FIG. 5. The information obtaining module 11, the spectrum determining module 12, and the scheduling module 13, in the embodiment of the present invention, the spectrum determining module 12 may specifically include:

The information receiving unit 121 is configured to receive a second traffic volume sent by the remaining base stations except the first base station in the cooperation set where the first base station is located;

The ratio obtaining unit 122 is configured to calculate a sum of the first traffic volume and the second traffic volume sent by the remaining base stations, obtain a sum of traffic volume, and calculate that the first traffic volume accounts for the total traffic volume Ratio value

The first determining unit 123 is configured to determine, according to the scale value acquired by the ratio acquiring unit 122, a target spectrum resource corresponding to the proportional value from a spectrum resource pool corresponding to the cooperation set.

In a specific embodiment, each base station in the cooperation set may notify other base stations in the set of the traffic volume of the corresponding cell of the base station through an inter-base station interface, for example, notify other base stations in the set to correspond to the base station in a multicast manner. The traffic volume of the cell is such that each base station in the cooperation set can obtain the traffic volume of the coverage area of other base stations in the cooperation set. After receiving the traffic volume that is sent by the base station other than the first base station, that is, the second traffic volume, the information receiving unit 121 can calculate the service of the first traffic volume in the collaboration set by using the ratio obtaining unit 122. a ratio of the sum of the quantity (ie, the sum of the first traffic and the second traffic), so that the first determining unit 123 may determine the target corresponding to the proportional value from the pool of spectrum resources allocated for the cooperation set. The spectrum resource is used as the spectrum resource used by the first base station to cover the cell. Specifically, the target spectrum resource determined by the first determining unit 123 corresponds to a ratio of the first traffic volume in the total traffic volume of the cooperation set, that is, the first traffic volume is in the sum of the traffic volume. The larger the proportion value is, the more the target spectrum resources are allocated to the first base station from the spectrum resource pool; otherwise, the less. Further, the foregoing traffic may be an equivalent traffic calculated after the base station performs QoS differentiation on different services.

Further, in the embodiment of the present invention,

The information acquiring module 11 is further configured to reacquire a new first traffic volume of the first base station coverage cell according to a preset time interval.

The spectrum determining module 12 is further configured to determine, according to the new first traffic quantity, a new target spectrum resource corresponding to the new first traffic volume from the spectrum resource pool.

In an optional embodiment, the information acquiring module 11 may periodically acquire the first traffic of the information of the coverage area of the first base station according to a preset time interval, such as every 500 ms, and update the current by the spectrum determining module 12. The spectrum resource occupied by the cell re-determines the target spectrum resource used by the first base station, so that the scheduling module 13 performs data scheduling based on the re-determined target spectrum resource.

Further, in the embodiment of the present invention,

The information acquiring module 11 is further configured to acquire a new first traffic volume of the first base station coverage cell, and detect an absolute value of a difference between the new first traffic volume and the previous acquired first traffic volume. Whether it is higher than a preset first threshold;

The spectrum determining module 12 is further configured to determine, from the spectrum resource pool, the new first according to the new first traffic when the absolute value is higher than the first threshold. The new target spectrum resource corresponding to the traffic.

In an optional embodiment, the spectrum determining module 12 may also obtain a large change in the traffic volume of the corresponding cell of the first base station in the non-period manner, for example, the information acquiring module 11 obtains a large amount of traffic. When the difference exceeds a certain preset threshold, updating the spectrum resource occupied by the local cell, that is, re-determining the target spectrum resource used by the first base station, to perform data scheduling based on the re-determined target spectrum resource. Specifically, the information acquiring module 11 may re-acquire the first traffic volume of the first base station coverage cell, that is, the new first traffic volume, and detect the difference between the new first traffic volume and the previous acquired first traffic volume. Whether the absolute value is higher than a preset first threshold, where the first threshold is pre-configured, and the first threshold corresponding to each base station in the cooperation set may be set differently. When the absolute value is higher than the first threshold, it may indicate that the current traffic volume changes greatly, and the spectrum determining module 12 may re-determine from the spectrum resource pool corresponding to the cooperation set according to the new first traffic volume. A new target spectrum resource corresponding to the new first traffic is output, so that the scheduling module 13 performs data scheduling based on the re-determined target spectrum resource, that is, the new target spectrum resource.

It should be noted that if there is a non-redistributable spectrum resource in the configured spectrum resource pool, if some part of the spectrum resource in the spectrum resource pool has been allocated to a certain UE in the cooperation set for semi-persistent scheduling, Part of the spectrum resource is a non-redistributable spectrum resource, which needs to be marked as a non-re-distributable state, so that other cells of the base station cannot use the part of the spectrum resource until the partial frequency The semi-persistent scheduling on the spectral resources ends. That is, when the spectrum determining module 12 determines the target spectrum resource that the base station can use according to the traffic volume size, after the non-redistributable spectrum resource needs to be removed from the spectrum resource pool, the traffic volume of the coverage cell of each base station is The sum of the traffic in the cooperation set (the traffic corresponding to the semi-persistent scheduling is not calculated within the traffic volume of the coverage cell of the base station, nor is it calculated within the sum of the traffic) from the spectrum resource pool The spectrum resource corresponding to the ratio is selected as the target spectrum resource, and the scheduling module 13 performs data scheduling based on the target spectrum resource.

In the embodiment of the present invention, the first base station may obtain the first traffic volume of the coverage cell of the base station, and calculate the first traffic volume in the collaboration set according to the received second traffic volume sent by other base stations in the cooperation set. a ratio of the proportion of the traffic, so that the target spectrum resource corresponding to the ratio is determined from the spectrum resource pool corresponding to the cooperation set, so that the first base station can cover the first base station based on the target spectrum resource. The UE in the cell performs data scheduling, which reduces information interaction between the base stations in the cooperative set. Further, since the cooperative base stations in the prior art require the high-capacity and low-latency inter-base station backhaul link when performing data information exchange between the served users, the user needs to additionally measure and feed back between the user and the cooperative base station. The channel information increases the performance requirements for the backhaul link between the base stations and the user. In the embodiment of the present invention, since the interaction of the user data information is not required, the requirement for the information backhaul link between the base stations can be reduced, and the UE in the cooperation set does not need to further the base station in the cooperation set. A large amount of channel information measurement and feedback is performed, that is, the performance requirements for the base station and the UE are reduced, and the overhead of the base station and the UE is reduced, especially in the case of low or medium load of the network, and the network throughput is improved.

Further, please refer to FIG. 7. FIG. 7 is a schematic structural diagram of another data scheduling apparatus according to the present invention. Specifically, the apparatus in the embodiment of the present invention may be used in the data scheduling apparatus in the embodiment corresponding to FIG. 5. The information obtaining module 11, the spectrum determining module 12, and the scheduling module 13, in the embodiment of the present invention, the spectrum determining module 12 may further include:

The information sending unit 124 is configured to send, to the central control node of the collaboration set where the first base station is located, a spectrum information request that carries the first traffic, so that the central control node collects the first traffic volume in the Allocating a ratio of the proportion of the traffic of each base station of the coordinated set, and allocating the target spectrum resource corresponding to the proportional value to the first base station from the spectrum resource pool corresponding to the cooperation set;

The second determining unit 125 is configured to receive spectrum information that is returned by the central control node in response to the spectrum information request, where the spectrum information indicates the target spectrum resource allocated by the central control node to the first base station.

In a specific embodiment, the central control node may be configured in the collaboration set, and the central control node may be a base station that is optimally configured in the cooperation set, or may be a separately configured node device, which is not implemented in the embodiment of the present invention. limited. Specifically, the information sending unit 124 may send the first traffic volume corresponding to the first base station to the central control node in the cooperation set, and the central control node may be configured according to the received traffic volume sent by each base station in the cooperation set. Allocating a ratio of the first traffic volume to the traffic volume of the cooperation set, and allocating a target spectrum resource corresponding to the ratio value to the first base station from a spectrum resource pool corresponding to the cooperation set, and using the target spectrum The resource information is returned to the first base station, and the second determining unit 125 receives the spectrum information including the target spectrum resource, so that the scheduling module 13 can perform data scheduling based on the target spectrum resource. The target spectrum resource allocated by the first base station corresponds to a proportion of the first traffic volume in the total traffic volume of the cooperation set, that is, the proportion of the first traffic volume in the sum of the traffic volume The larger the value, the more target spectrum resources are allocated to the first base station from the spectrum resource pool; otherwise, the less. The spectrum information request includes the first traffic information, and may further include configuration information such as a base station identifier of the first base station, so that the central control node allocates a target spectrum resource to the first base station. Further, the foregoing traffic may be an equivalent traffic calculated after the base station performs QoS differentiation on different services.

Further, in the embodiment of the present invention,

The information acquiring module 11 is further configured to acquire a new first service of the first base station coverage cell And detecting whether an absolute value of a difference between the new first traffic volume and the previously acquired first traffic volume is higher than a preset first threshold;

In an optional embodiment, the spectrum determining module 12 may also update the occupied area of the cell in a non-period manner, such as when the information acquiring module 11 obtains a large change in the traffic volume of the corresponding cell of the first base station. The spectrum resource re-determines the target spectrum resource used by the first base station to perform data scheduling based on the re-determined target spectrum resource. Specifically, the information acquiring module 11 may re-acquire the first traffic volume of the first base station coverage cell, that is, the new first traffic volume, and detect the difference between the new first traffic volume and the previous acquired first traffic volume. Whether the absolute value is higher than a preset first threshold, where the first threshold is pre-configured, and the first threshold corresponding to each base station in the cooperation set may be set differently. When the absolute value is higher than the first threshold, it may indicate that the current traffic volume changes greatly, and the spectrum determining module 12 may re-determine from the spectrum resource pool corresponding to the cooperation set according to the new first traffic volume. A new target spectrum resource corresponding to the new first traffic is output, so that the scheduling module 13 performs data scheduling based on the re-determined target spectrum resource, that is, the new target spectrum resource.

It should be noted that if there is a non-redistributable spectrum resource in the configured spectrum resource pool, if some part of the spectrum resource in the spectrum resource pool has been allocated to a certain UE in the cooperation set for semi-persistent scheduling, A part of the spectrum resource is a non-redistributable spectrum resource, which needs to be marked as a non-redistributable state, so that the other cell base station cannot use the part of the spectrum resource until the semi-persistent scheduling on the part of the spectrum resource ends. That is, when the spectrum determining module 12 determines the target spectrum resource that the base station can use according to the traffic volume size, after the non-redistributable spectrum resource needs to be removed from the spectrum resource pool, the traffic volume of the coverage cell of each base station is The sum of the traffic in the cooperation set (the traffic corresponding to the semi-persistent scheduling is not calculated within the traffic volume of the coverage cell of the base station, nor is it calculated within the sum of the traffic) from the spectrum resource pool The spectrum resource corresponding to the ratio is selected as the target spectrum resource, and the scheduling module 13 performs data scheduling based on the target spectrum resource.

In the embodiment of the present invention, the first base station may obtain the first traffic volume of the coverage cell of the base station, and send the first traffic volume to the central control node in the current collaboration set, so that the central control node And calculating a ratio of the first traffic volume in the total traffic volume of the cooperation set, and allocating the target spectrum resource corresponding to the ratio value to the first base station from the spectrum resource pool corresponding to the cooperation set, and The target spectrum resource information is returned to the first base station, so that the first base station can perform data scheduling on the UE in the first base station coverage cell based on the target spectrum resource, and the information interaction between the base stations in the cooperation set is reduced. Further, since the cooperative base stations in the prior art require the high-capacity and low-latency inter-base station backhaul link when performing data information exchange between the served users, the user needs to additionally measure and feed back between the user and the cooperative base station. The channel information increases the performance requirements for the backhaul link between the base stations and the user. In the embodiment of the present invention, since the interaction of the user data information is not required, the requirement for the information backhaul link between the base stations can be reduced, and the UE in the cooperation set does not need to further the base station in the cooperation set. A large amount of channel information measurement and feedback is performed, that is, the performance requirements for the base station and the UE are reduced, and the overhead of the base station and the UE is reduced, especially in the case of low or medium load of the network, and the network throughput is improved.

In the above embodiments, the descriptions of the various embodiments are different, and the details that are not detailed in a certain embodiment can be referred to the related descriptions of other embodiments.

A person skilled in the art may understand that all or part of the various steps of the foregoing embodiments may be performed by a program to instruct related hardware. The program may be stored in a computer readable storage medium, and the storage medium may include: Flash disk, Read-Only Memory (ROM), Random Access Memory (RAM), disk or optical disk.

The method, system and device provided by the present invention are described in detail above, and the principles and embodiments of the present invention are described herein by using specific examples. The description of the above embodiments is only for helping to understand the method of the present invention and At the same time, there will be changes in the specific embodiments and the scope of application according to the idea of the present invention, and the contents of the present specification should not be construed as limiting the present invention. .

Claims

A data scheduling method, comprising:

Obtaining, by the first base station, a first traffic volume of the first base station coverage cell;

Determining, by the first base station, a target spectrum resource corresponding to the first traffic quantity from a spectrum resource pool corresponding to the cooperation set in which the first base station is located, where the first base station is in the collaboration set The target spectrum resources corresponding to the traffic volume of the base station determined by each base station do not overlap each other;

The first base station performs data scheduling on the user equipment of the first base station coverage cell based on the target spectrum resource.
The method according to claim 1, wherein the first base station determines, according to the first traffic quantity, a first traffic volume from a spectrum resource pool corresponding to the cooperation set in which the first base station is located. Corresponding target spectrum resources, including:

Receiving, by the first base station, a second traffic volume sent by the remaining base stations other than the first base station in the cooperation set where the first base station is located;

The first base station calculates a sum of the first traffic volume and the second traffic volume sent by the remaining base stations, to obtain a sum of traffic volumes;

The first base station calculates a proportion of the first traffic volume in the sum of the traffic volumes;

Determining, by the first base station, a target spectrum resource corresponding to the proportional value from a spectrum resource pool corresponding to the cooperation set according to the ratio value.
The method according to claim 1, wherein the first base station determines, according to the first traffic quantity, a first traffic volume from a spectrum resource pool corresponding to the cooperation set in which the first base station is located. Corresponding target spectrum resources, including:

Sending, by the first base station, a spectrum information request carrying the first traffic volume to a central control node of the cooperation set where the first base station is located, so that the central control node collects the first traffic volume in the collaboration set a ratio of the proportion of the traffic of each of the base stations, and a target spectrum resource corresponding to the ratio value is allocated to the first base station from the spectrum resource pool corresponding to the cooperation set;

Receiving, by the first base station, spectrum information that is returned by the central control node in response to the spectrum information request, where the spectrum information indicates the target spectrum resource allocated by the central control node to the first base station.
The method according to any one of claims 1-3, wherein the first traffic volume is an uplink traffic volume, and the first base station acquires the first traffic volume of the first base station coverage cell, including:

Receiving, by the first base station, the uplink traffic information reported by each user equipment of the first base station coverage cell, and using the sum of the uplink traffic volume in the uplink traffic information reported by each user equipment as the first The base station covers the first traffic of the cell.
The method according to claim 1, wherein the first base station determines, according to the first traffic, a spectrum resource pool corresponding to a collaboration set in which the first base station is located, and the first service After the corresponding target spectrum resource is processed, the method further includes:

The first base station acquires a new first traffic volume of the first base station coverage cell, and detects whether the absolute value of the difference between the new first traffic volume and the previous acquired first traffic volume is higher than a preset. First threshold

If the absolute value is higher than the first threshold, the first base station determines, according to the new first traffic quantity, a new one corresponding to the new first traffic quantity from the spectrum resource pool. Target spectrum resources.
A data scheduling device, wherein the device is disposed in the first base station, and includes:

An information acquiring module, configured to acquire a first traffic volume of the first base station coverage cell;

a spectrum determining module, configured to determine, according to the first traffic volume acquired by the information acquiring module, a target spectrum resource corresponding to the first traffic volume from a spectrum resource pool corresponding to the cooperation set in which the first base station is located The target spectrum resources corresponding to the traffic volume of the base station determined by each base station in the cooperation set do not overlap each other;

And a scheduling module, configured to perform data scheduling on the user equipment of the first base station coverage cell based on the target spectrum resource determined by the spectrum determining module.
The apparatus according to claim 6, wherein the spectrum determining module comprises:

An information receiving unit, configured to receive a second traffic volume sent by the remaining base stations except the first base station in the cooperation set where the first base station is located;

a ratio obtaining unit, configured to calculate a sum of the first traffic volume and the second traffic volume sent by the remaining base stations, obtain a sum of traffic volumes, and calculate a proportion of the first traffic volume in the sum of the traffic volumes Proportional value

a first determining unit, configured to determine, according to the scale value acquired by the ratio acquiring unit, a target spectrum resource corresponding to the proportional value from a spectrum resource pool corresponding to the cooperation set.
The apparatus according to claim 6, wherein the spectrum determining module comprises:

An information sending unit, configured to send, to a central control node of the collaboration set where the first base station is located, a spectrum information request that carries the first traffic, so that the central control node collects the first traffic volume in the collaboration a ratio of the proportion of the traffic of each of the set base stations, and a target spectrum resource corresponding to the ratio value is allocated to the first base station from the spectrum resource pool corresponding to the cooperation set;

a second determining unit, configured to receive spectrum information that is returned by the central control node in response to the spectrum information request, where the spectrum information indicates the target spectrum resource allocated by the central control node to the first base station.
The device according to any one of claims 6-8, wherein the first traffic volume is an uplink traffic volume; the information acquiring module is specifically configured to:

Receiving, by the first base station, the uplink traffic information reported by each user equipment of the coverage cell, and using the sum of the uplink traffic in the uplink traffic information reported by each user equipment as the first basement coverage cell The first amount of business.
The device of claim 6 wherein:

The information acquiring module is further configured to acquire a new first traffic volume of the first base station coverage cell, and detect whether an absolute value of the difference between the new first traffic volume and the previous acquired first traffic volume is Above a preset first threshold;

The spectrum determining module is further configured to determine, from the spectrum resource pool, the new first service according to the new first traffic when the absolute value is higher than the first threshold The amount corresponds to the new target spectrum resource.