CN106612522B - Method and device for configuring component carrier in LTE-A heterogeneous network - Google Patents
Method and device for configuring component carrier in LTE-A heterogeneous network Download PDFInfo
- Publication number
- CN106612522B CN106612522B CN201510702590.7A CN201510702590A CN106612522B CN 106612522 B CN106612522 B CN 106612522B CN 201510702590 A CN201510702590 A CN 201510702590A CN 106612522 B CN106612522 B CN 106612522B
- Authority
- CN
- China
- Prior art keywords
- member carrier
- carrier set
- load
- access user
- carriers
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/08—Load balancing or load distribution
Abstract
The invention discloses a method and a device for configuring member carriers in an LTE-A heterogeneous network, which are used for solving the problems of unbalanced carrier load and channel difference. The method includes that after a base station determines an access user, available member carriers are divided into a plurality of member carrier sets, a load balance coefficient and a throughput gain of each member carrier set are calculated, a target member carrier set is selected according to screening conditions preset based on the load balance coefficient and the throughput gain, and carriers are configured for the access user in the target member carrier set. Therefore, the total throughput of the system can be improved on the premise of ensuring the fairness of access users and the load balance of member carriers; the carrier waves are configured for the access user in the target member carrier wave set, so that the condition that the number of the member carrier waves is distributed on the premise of member carrier wave load balance and channel condition difference is ignored is avoided, and the service data is smoothly transmitted.
Description
Technical Field
The present invention relates to the field of wireless communication technologies, and in particular, to a method and an apparatus for configuring a component carrier in an LTE-a heterogeneous network.
Background
In order to improve the performance of the communication network of the cell, one important approach is to deploy a heterogeneous network in a Long Term Evolution-Advanced (LTE-a) system. For example, low power nodes such as micro base stations (Pico) and the like are deployed inside cells of high power nodes such as Macro base stations (Macro), and a heterogeneous network composed of different types of nodes is formed. Wherein, the carrier frequency bands used by the micro base station (Pico) and the Macro base station (Macro) cells are the same.
Based on the heterogeneous network, the base station can select a proper network for the user according to the characteristics of the user (such as a vehicle-mounted user), the service characteristics (such as high real-time requirement) and the characteristics of the network where the user is located, so that the network service quality is improved. However, in the heterogeneous network, each base station has its own characteristics and there are large differences between different types of node base stations, for example, the micro base stations (Pico) are randomly distributed, the difference between the transmission powers of Macro base stations (Macro) and micro base stations (Pico) is large, and the transmission path loss, etc., so the problem of interference between base station cells commonly exists in the heterogeneous network.
Therefore, in the next generation evolution system, for example, in the 3GPP-LTE-a standard, an enhanced Inter-Cell interference coordination (eICIC) technique is adopted in a heterogeneous network among co-frequency cells to solve the interference problem caused by the enhanced Inter-Cell interference coordination (eICIC).
Carrier Aggregation (CA), one of the key technologies of LTE-a, is a main scheme in the frequency-domain enhanced Inter-Cell Interference protocol (elcic). The method can improve the transmission bandwidth of the system, meet the requirements of single user peak rate and system capacity improvement, and can also avoid the frequency domain interference of a heterogeneous network at the resolution level of Component Carrier (CC).
There are two existing Component Carrier (CC) selection schemes.
The first scheme is to allocate the number of component carriers based on Reference Signal Receiving Power (RSRP).
For example, the base station may allocate the number of carriers according to the signal strength of each user location in the jurisdiction, that is, for a user with high signal strength, the number of allocated component carriers is large, and for a user with weak signal strength, the number of allocated component carriers is small.
However, the first scheme is easy to cause the carrier load to be unbalanced.
For example, if a user is located in an area with weak signal strength but needs to frequently use network resources to transmit service data (i.e. the service load is very high), at this time, the base station can only allocate a small number of component carriers to the user and cannot meet the use requirement of the user, so that the service load of the part of component carriers is too large, and the component carriers in other domains may be idle, thereby causing a situation of unbalanced carrier load.
The second scheme is to allocate component carriers on the premise of component carrier load balancing.
For example, the base station distributes the service data of the user to each component carrier in a balanced manner according to the carrying capacity of the component carrier.
However, the second scheme ignores the channel condition difference between the component carriers, and some users allocate the component carriers with good channel conditions to successfully complete the transmission of the service data, while another part of users allocate the component carriers with poor channel conditions to not successfully complete the transmission of the service data, so that the use requirements of the users cannot be met.
Therefore, the two selection schemes of the component carrier have respective defects, and the load balance of the component carrier cannot be realized, so that the throughput of the system is limited, and the performance of the system is influenced.
Disclosure of Invention
The embodiment of the invention provides a method and a device for configuring member carriers in an LTE-A heterogeneous network, which are used for solving the problems of unbalanced carrier load and channel difference caused by unreasonable distribution of the member carriers.
The embodiment of the invention provides the following specific technical scheme:
a method of configuring component carriers in an LTE-A heterogeneous network, comprising:
a base station determines an access user and determines the number of target carriers required to be allocated to the access user according to the service requirement of the access user;
the base station divides the available member carriers into a plurality of member carrier sets, wherein one member carrier set comprises continuous member carriers which accord with the number of the target carriers;
the base station respectively calculates the load balance coefficient and throughput gain of each member carrier set, and selects a target member carrier set from the plurality of member carrier sets based on the calculation result and the combination of preset screening conditions;
and the base station configures the target member carrier set to the access user.
In the embodiment of the invention, the base station can ensure the load balance on each member carrier in the process of distributing the member carriers, and the condition of unbalanced carrier load can not occur; the method for selecting the target member carrier set according to the screening condition preset based on the load balance degree coefficient and the throughput gain improves the total throughput of the system on the premise of ensuring the fairness of the access users and the load balance of the member carriers; the carrier waves are configured for the access user in the target member carrier wave set, so that the condition that the number of the member carrier waves is distributed on the premise of member carrier wave load balance and channel condition difference is ignored is avoided, and the service data is smoothly transmitted.
Preferably, the base station determines the access user, including:
the base station broadcasts the reference signal, and when determining that a service cell selected by a user based on the sum of the reference signal received power and the set offset value belongs to the jurisdiction range of the base station, the user is determined to be an access user.
This way, the access user can select to access the low power base station more easily, thereby sharing the load of the macro base station.
Preferably, the base station calculates a load balancing coefficient of one component carrier set, including:
respectively calculating the total load of each Component Carrier and calculating the average load of all the Component carriers in the one Component Carrier set according to the load of each Component Carrier in the one Component Carrier set when being selected as a primary Carrier (PCC) and a Secondary Carrier (SCC);
and calculating a load balance coefficient of the member carrier set according to the load sum of each member carrier and the average load of all the member carriers in the member carrier set by combining the total number of the current access users.
By calculating the load balance coefficients of all the member carrier sets, the base station can ensure the load balance on each member carrier in the process of distributing the member carriers, and the condition of unbalanced carrier load can not occur.
Preferably, the base station calculates the throughput gain of any member carrier set, and specifically includes:
respectively calculating the data transmission rate of each member carrier in any member carrier set of the access user according to a preset Shannon capacity formula;
respectively determining the corresponding transmission coefficient of the access user on each member carrier in any member carrier;
calculating the data transmission rate of the access user on any member carrier set according to the data transmission rate and the transmission coefficient corresponding to each member carrier;
and taking the data transmission rate of the access user on any component carrier set as the throughput gain of any component carrier set.
Preferably, the selecting, by the base station, the target component carrier set from the plurality of component carrier sets specifically includes:
calculating a fairness factor according to the total number of the current access users and the number of resource blocks distributed to each access user by the base station in the same gap time;
the base station ensures that each user has the opportunity to be allocated with resource blocks as fair as possible by defining the fairness factors of the users.
Respectively calculating the load capacity coefficient of each member carrier set according to the load balance coefficient and throughput gain of each member carrier set in combination with the fairness factor;
and taking the member carrier set with the maximum load capacity coefficient value as a target member carrier set.
The method for selecting the target member carrier set improves the total throughput of the system on the premise of ensuring user fairness and member carrier load balance.
Preferably, the configuring, by the base station, the target component carrier set to the access user specifically includes:
and in the target member carrier set, configuring the member carrier with the maximum reference signal access power of the access user as a main carrier of the access user, and configuring other member carriers as auxiliary carriers of the access user.
An apparatus for configuring component carriers in an LTE-a heterogeneous network, comprising:
the distribution module is used for determining an access user and determining the number of target carriers required to be distributed to the access user according to the service requirement of the access user;
a dividing module, configured to divide an available component carrier into a plurality of component carrier sets, where one component carrier set includes consecutive component carriers according to the number of the target carriers;
the computing module is used for respectively computing the load balance coefficient and the throughput gain of each member carrier set, and selecting a target member carrier set from the plurality of member carrier sets based on the computing result and the combination of the preset screening condition;
and the access module is used for configuring the target member carrier set to the access user.
In the embodiment of the invention, the load balance on each member carrier can be ensured in the process of distributing the member carriers, and the condition of unbalanced carrier load can not occur; the method for selecting the target member carrier set according to the screening condition preset based on the load balance degree coefficient and the throughput gain improves the total throughput of the system on the premise of ensuring the fairness of the access users and the load balance of the member carriers; the carrier waves are configured for the access user in the target member carrier wave set, so that the condition that the number of the member carrier waves is distributed on the premise of member carrier wave load balance and channel condition difference is ignored is avoided, and the service data is smoothly transmitted.
Preferably, the access user is determined, and the allocation module is configured to:
and broadcasting the reference signal, and when determining that a service cell selected by a user based on the sum of the reference signal received power and the set offset value belongs to the jurisdiction range of the device, determining that the user is an access user.
This way, the access user can select to access the low power base station more easily, thereby sharing the load of the macro base station.
Preferably, the load balancing coefficient of a component carrier set is calculated, and the calculating module is configured to:
respectively calculating the load sum of each member carrier according to the load when each member carrier in the member carrier set is selected as PCC and SCC, and calculating the average load of all the member carrier sets in the member carrier set;
and calculating a load balance coefficient of one member carrier set according to the load sum of each member carrier and the average load of all the member carriers in the member carrier set by combining the total number of the current access users.
By calculating the load balance coefficients of all the member carrier sets, the load balance on each member carrier can be ensured in the process of distributing the member carriers, and the condition of unbalanced carrier load can not occur.
Preferably, the throughput gain of any component carrier set is calculated, and the calculating module is configured to:
respectively calculating the data transmission rate of each member carrier in any member carrier set of the access user according to a preset Shannon capacity formula;
respectively determining the transmission coefficient corresponding to the access user on each member carrier in any member carrier;
calculating the data transmission rate of the access user on any member carrier set according to the data transmission rate and the transmission coefficient corresponding to each member carrier;
and taking the data transmission rate of the access user on any member carrier set as the throughput gain of any member carrier set.
Preferably, the computing module is configured to select a target component carrier set from the plurality of component carrier sets, and is configured to:
calculating a fairness factor according to the total number of the current access users and the number of resource blocks allocated to each access user in the same gap time;
by defining the fairness factor of the users, each user is guaranteed to have the opportunity to be allocated with resource blocks as fair as possible.
Respectively calculating the load capacity coefficient of each member carrier set according to the load balance coefficient and throughput gain of each member carrier set in combination with a fairness factor;
and taking the member carrier set with the maximum load capacity coefficient value as a target member carrier set.
The method for selecting the target member carrier set improves the total throughput of the system on the premise of ensuring user fairness and member carrier load balance.
Preferably, the target component carrier set is configured to the access user, and the access module is configured to:
and in the target component carrier set, configuring the component carrier with the maximum reference signal access power of the access user as the PCC of the access user, and configuring other component carriers as the SCC of the access user.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a flowchart illustrating a configuration of a component carrier in an LTE-a heterogeneous network according to an embodiment of the present invention;
fig. 2 is a schematic diagram illustrating a functional structure of a base station terminal according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In order to solve the problems of unbalanced carrier load and channel difference caused by unreasonable distribution of member carriers in the prior art, in the embodiment of the invention, after a base station determines an access user, the number of the member carriers is not distributed to the access user on the basis of the receiving power of a reference signal or on the premise of member carrier load balance, but a target carrier set of the access user is determined on the premise of ensuring the fairness of the access user and member carrier load balance according to the service requirement of the access user, so that the condition of unbalanced carrier load caused by distributing the number of the member carriers on the basis of the receiving power of the reference signal is avoided, and the total throughput of a system is improved; and according to the power of the reference signal of the member carrier fed back by the access user, the carrier is configured for the access user in the target member carrier set, so that the condition that the transmission of service data cannot be smoothly finished due to the fact that the number of the member carriers is distributed on the premise of member carrier load balance and channel condition difference is ignored is avoided.
The scheme of the invention is described in detail by the following specific examples.
Referring to fig. 1, in the embodiment of the present invention, a specific flow for configuring a component carrier in an LTE-a heterogeneous network is as follows:
step 100: the base station determines the access user and determines the number of target carriers required to be allocated to the access user according to the service requirement of the access user.
In general, the access user needs to select the best base station for access based on the reference signal received power of the reference signal obtained from the macro base station and the low power base station. In the embodiment of the present invention, the following access principles may be specifically adopted, but not limited to:
for example, the principle of serving base station selection by the access user is as follows:
wherein, RSRPm,kThe reference signal receiving power of the access user m when receiving the reference signal from the base station k is represented; CellIDservingThe identifier of the serving cell finally selected by the access user m selects the serving cell, namely the serving base station is selected;
bias value used when carrying on the cell selection is Bias value in Bias;
for macro base stations, Bias is 0; and Bias is a positive value for low power base stations.
In this way, the access user can select to access the low-power base station, such as the micro base station, more easily, and the load of the macro base station is shared.
Based on the above principle, the base station may also determine the access user. The method specifically comprises the following steps: the base station sends a reference signal to a user, and according to a calculation formula, if the sum of the reference signal receiving power of a certain user receiving the reference signal sent by the base station and the offset value of the base station is maximum (compared with signals of other base stations), and the obtained identification number of the serving cell selected by the user belongs to the jurisdiction range of the base station, the base station at the moment determines that the user is an access user.
Step 110: the base station divides the available component carriers into a plurality of component carrier sets, wherein one component carrier set comprises continuous component carriers which accord with the number of the target carriers.
For example, the base station creates a series of adjacent component carrier selection sets, where the number of created component carrier selection sets is K-M-R +1, (R-1, 2.. M), where M is the total number of current access users in the base station, and R is the number of component carriers selected by the base station for the access user. Wherein, the above-mentioned a series of component carrier selection sets are expressed as:
Ωcc＝{s1,s2,...,sk}；
at omegaccEach set of component carriers in (a) may be represented as:
s1＝{CC1,...,CCr}；...sk＝{CCk,...,CCm}；
Ωccthere are R component carriers for each component carrier set in (1), and the component carriers are contiguous.
Step 120: and the base station respectively calculates the load balance coefficient and the throughput gain of each member carrier set, and selects a target member carrier set from the plurality of member carrier sets based on the calculation result and the combination of preset screening conditions.
In the embodiment of the present invention, a process of calculating a load balancing coefficient by a base station is described by taking a component carrier set (hereinafter, referred to as a component carrier set j) as an example, specifically as follows:
first, the base station calculates the load when each Component Carrier in the Component Carrier set j is selected as a primary Carrier (PCC) and a Secondary Carrier (SCC), calculates the total load of each Component Carrier, and calculates the average load of all Component Carrier sets in the Component Carrier set j.
For example, the following formula can be preferably used to calculate the total load of a component carrier:
Ij＝Ij,pcc+Ij,scc；
wherein, IjRepresenting member carriers CC in a member carrier set jjThe sum of the loads of (a);
Ij,pccand Ij,sccIndicates when CC isjCC when selected as PCC and SCCjThe load of (2).
Further, the following formula can be used to calculate the average load of all component carriers in the component carrier j:
wherein, M represents the total number of current access users in the base station.
And then, the base station calculates the load balance coefficient of the member carrier set j according to the load sum of each member carrier in the member carrier set j and the average load of all the member carriers in the member carrier set j in combination with the total number of the current access users.
For example, preferably, the load balancing factor σ of the component carrier set j is calculated(j)The formula used is:
it should be noted that the load balancing coefficient of one component carrier set indicates a degree of deviation between the load of each component carrier in the component carrier set and the average load of the component carrier set, and the larger the load balancing coefficient is, the more unbalanced the load of each component carrier in the component carrier set is.
By calculating the load balance coefficients of all the member carrier sets, the base station can ensure the load balance on each member carrier in the process of distributing the member carriers, and the condition of unbalanced carrier load can not occur.
Meanwhile, the base station needs to calculate the throughput gain of each component carrier set separately.
In the embodiment of the present invention, a process of calculating throughput gain by a base station is introduced by taking a member carrier set j as an example, which is specifically as follows:
firstly, calculating the component carrier CC of the access user in the component carrier set jjData transmission rate Cmj。
For example, preferably, component carrier CC is calculatedjThe shannon capacity formula adopted for the data transmission rate is as follows:
wherein the coefficient α is a preset attenuation factor;
b is the bandwidth;
SINRminis the minimum signal-to-interference-and-noise ratio value that meets the coding requirements of the receiving end.
In actual engineering, the SINR value is difficult to obtain, and the Channel Quality Indicator (CQI) value is easy to obtain, so that the corresponding SINR value can be found according to the mapping relationship by the value of the fed-back CQI when calculating the SINR.
At the same time, determining the component carrier CC of the access user in the component carrier set jjThe corresponding transmission coefficient.
Further, according to the component carrier CC in the component carrier set jjAnd calculating the data transmission rate of the access user in the member carrier set j according to the corresponding data transmission rate and the transmission coefficient.
For example, it is preferable to calculate the transmission data rate C of the access user on the component carrier set jm(j)The formula used is:
wherein, βmjIndicating access user in component carrier CCjThe corresponding transmission coefficient; assume that the user finally selects CCjThen βmjThe value is 1, otherwise, the value is 0, and when the target member carrier set is finally determined, which CCs are selected can be obtainedjThereby the efficiency of the system is more balanced;
Cmjindicating access user in component carrier CCjThe data transmission rate of (c).
And taking the data transmission rate of the access user on the member carrier set j as the throughput gain on the member carrier set j.
Further, after calculating the load balancing coefficient and throughput gain on the component carrier set j, the base station may select a target component carrier set from the multiple component carrier sets based on the calculation result in combination with a preset screening condition, specifically:
firstly, the base station calculates a fairness factor according to the total number of the current access users and the number of resource blocks allocated to each access user by the base station in the same gap time.
For example, preferably, a fairness factor F for access users is calculatedAThe formula used is:
wherein M represents the total number of currently accessed users;
Am(Δ T) represents the number of resource blocks allocated to any access user within the time slot of Δ T.
FAIs a measure of fairness among users. FA1 means that all users have the same amount of resource service in the time slot of Δ T, which is the most fair to all users at this time, and is FAAn ideal upper limit.
The base station ensures that each user has the opportunity to be allocated with resource blocks as fair as possible by defining the fairness factors of the users.
Secondly, the base station calculates the load capacity coefficient of each member carrier set respectively according to the load balance coefficient and the throughput gain of each member carrier set in combination with the fairness factor.
For example, preferably, the formula used in the calculation method for calculating the load capability coefficient Y of the component carrier set j is as follows:
wherein, FARepresenting a fairness factor of the access user;
Cm(j)representing the transmission data rate of the access user on the member carrier set j;
σ(j)and representing the load balance coefficient of the member carrier set j.
And the base station calculates the load capacity coefficient of each member carrier set according to the method, and the load capacity coefficient is used as a standard for selecting the target member carrier set.
And finally, taking the member carrier set with the maximum load capacity coefficient value as a target member carrier set.
For example, the following formula may be preferably used to select the target component carrier set sx：
The method for selecting the target member carrier set improves the total throughput of the system on the premise of ensuring user fairness and member carrier load balance.
Step 130: and the base station configures the target member carrier set to an access user.
And in the target member carrier set, the base station configures the carrier type for the access user in the target member carrier set according to the received power of the reference signal fed back by the access user.
For example, preferably, the formula for selecting the component carrier q as the PCC is:
q＝argmax{RSRPq},(x≤q≤x+R-1)
and configuring other component carriers in the target component carrier set as SCCs.
The distribution mode of the member carrier set solves the problems of unbalanced carrier load and channel difference caused by unreasonable distribution of the member carriers.
Based on the above embodiment, referring to fig. 2, in an embodiment of the present invention, the apparatus includes:
an allocating module 20, configured to determine an access user, and determine, according to a service requirement of the access user, a number of target carriers to be allocated to the access user;
a dividing module 21, configured to divide an available component carrier into a plurality of component carrier sets, where one component carrier set includes consecutive component carriers according to the number of the target carriers;
a calculating module 22, configured to calculate a load balancing coefficient and a throughput gain of each component carrier set, and select a target component carrier set from the multiple component carrier sets based on a calculation result in combination with a preset screening condition;
an access module 23, configured to configure the target component carrier set to the access user.
Preferably, when determining the access user, the allocating module 20 is configured to:
and broadcasting the reference signal, and judging that a user is an access user when determining that a service cell selected by the user based on the sum of the reference signal received power and the set offset value belongs to the jurisdiction range of the device.
Preferably, when calculating the load balancing factor of a component carrier set, the calculating module 22 is configured to:
respectively calculating the load sum of each member carrier according to the load when each member carrier in the member carrier set is selected as PCC and SCC, and calculating the average load of all the member carrier sets in the member carrier set;
and calculating a load balance coefficient of one member carrier set according to the load sum of each member carrier and the average load of all the member carriers in the member carrier set by combining the total number of the current access users.
Preferably, when calculating the throughput gain of any component carrier set, the calculating module 22 is configured to:
respectively calculating the data transmission rate of each member carrier in any member carrier set of the access user according to a preset Shannon capacity formula;
respectively determining the transmission coefficient corresponding to the access user on each member carrier in any member carrier;
calculating the data transmission rate of the access user on any member carrier set according to the data transmission rate and the transmission coefficient corresponding to each member carrier;
and taking the data transmission rate of the access user on any member carrier set as the throughput gain of any member carrier set.
Preferably, when the target component carrier set is selected from the plurality of component carrier sets, the calculating module 22 is configured to:
calculating a fairness factor according to the total number of the current access users and the number of resource blocks allocated to each access user in the same gap time;
respectively calculating the load capacity coefficient of each member carrier set according to the load balance coefficient and throughput gain of each member carrier set in combination with a fairness factor;
and taking the member carrier set with the maximum load capacity coefficient value as a target member carrier set.
Preferably, when the target component carrier set is configured to the access user, the access module 23 is configured to:
and in the target component carrier set, configuring the component carrier with the maximum reference signal access power of the access user as the PCC of the access user, and configuring other component carriers as the SCC of the access user.
In summary, in the embodiment of the present invention, an access user is determined, and the number of target carriers to be allocated to the access user is determined according to the service requirement of the access user; dividing available component carriers into a plurality of component carrier sets, wherein one component carrier set comprises continuous component carriers according with the number of the target carriers; respectively calculating the load balance coefficient and throughput gain of each member carrier set, and selecting a target member carrier set from the plurality of member carrier sets based on the calculation result and the combination of preset screening conditions; and configuring the target member carrier set to the access user. In the technical scheme of the invention, the access mode of the access user is determined, so that the access user can select to access the low-power base station more easily, and the load of the macro base station is shared; by calculating the load balance coefficients of all the member carrier sets, the base station can ensure the load balance on each member carrier in the process of distributing the member carriers, and the condition of unbalanced carrier load can not occur; the method for selecting the target member carrier set according to the screening condition preset based on the load balance degree coefficient and the throughput gain improves the total throughput of the system on the premise of ensuring the fairness of the access users and the load balance of the member carriers; the carrier waves are configured for the access user in the target member carrier wave set, so that the condition that the number of the member carrier waves is distributed on the premise of member carrier wave load balance and channel condition difference is ignored is avoided, and the service data is smoothly transmitted.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, apparatus (device), or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present invention has been described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (devices) and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (8)
1. A method for configuring component carriers in a long term evolution advanced LTE-A heterogeneous network, the method comprising:
a base station determines an access user and determines the number of target carriers required to be allocated to the access user according to the service requirement of the access user;
the base station divides the available member carriers into a plurality of member carrier sets, wherein one member carrier set comprises continuous member carriers according with the number of the target carriers;
the base station calculates a load balance coefficient and a throughput gain of each member carrier set respectively, and selects a target member carrier set from the plurality of member carrier sets based on a calculation result in combination with a preset screening condition, and the method specifically comprises the following steps: calculating a fairness factor according to the total number of current access users and the number of resource blocks distributed to each access user by a base station in the same gap time, respectively calculating a load capacity coefficient of each member carrier set according to a load balance coefficient and throughput gain of each member carrier set and combining the fairness factor, and taking the member carrier set with the largest load capacity coefficient value as a target member carrier set, wherein the load balance coefficient represents the deviation degree of the load of each member carrier in the member carrier set and the average load of the member carrier set, and the larger the load balance coefficient is, the more unbalanced the load of each member carrier in the member carrier set is;
the base station configures the target member carrier set to the access user, wherein the method specifically includes: and in the target member carrier set, configuring the member carrier with the maximum reference signal access power of the access user as a main carrier of the access user, and configuring other member carriers as auxiliary carriers of the access user.
2. The method of claim 1, wherein the base station determining the access user specifically comprises:
the base station broadcasts the reference signal, and when determining that a service cell selected by a user based on the sum of the reference signal received power and a set offset value belongs to the jurisdiction range of the base station, the user is determined to be an access user.
3. The method of claim 1, wherein the base station calculates a load balancing factor for a set of component carriers, and specifically comprises:
respectively calculating the load sum of each member carrier and calculating the average load of all the member carriers in the member carrier set according to the load when each member carrier in the member carrier set is selected as a primary carrier PCC and a secondary carrier SCC;
and calculating a load balance coefficient of the member carrier set according to the load sum of each member carrier and the average load of all the member carriers in the member carrier set by combining the total number of the current access users.
4. The method of claim 1, wherein the base station calculates the throughput gain of any one of the component carrier sets, and specifically comprises:
respectively calculating the data transmission rate of each member carrier in any member carrier set of the access user according to a preset Shannon capacity formula;
respectively determining the corresponding transmission coefficient of the access user on each member carrier in any member carrier;
calculating the data transmission rate of the access user on any member carrier set according to the data transmission rate and the transmission coefficient corresponding to each member carrier;
and taking the data transmission rate of the access user on any component carrier set as the throughput gain of any component carrier set.
5. An apparatus for configuring component carriers in a long term evolution advanced LTE-a heterogeneous network, comprising:
the distribution module is used for determining an access user and determining the number of target carriers required to be distributed to the access user according to the service requirement of the access user;
a dividing module, configured to divide available component carriers into multiple component carrier sets, where one component carrier set includes consecutive component carriers according to the number of the target carriers;
a calculating module, configured to calculate a load balancing coefficient and a throughput gain of each component carrier set, select a target component carrier set from the multiple component carrier sets based on a calculation result in combination with a preset screening condition, and when the target component carrier set is selected from the multiple component carrier sets, the calculating module is configured to: calculating a fairness factor according to the total number of current access users and the number of resource blocks distributed to each access user in the same interval time, respectively calculating a load capacity coefficient of each member carrier set according to a load balance coefficient and throughput gain of each member carrier set and combining the fairness factor, and taking the member carrier set with the largest load capacity coefficient value as a target member carrier set, wherein the load balance coefficient represents the deviation degree of the load of each member carrier in the member carrier set and the average load of the member carrier set, and the larger the load balance coefficient, the more unbalanced the load of each member carrier in the member carrier set;
an access module, configured to configure the target component carrier set to the access user, where specifically, the access module is configured to configure a component carrier with a maximum reference signal access power of the access user as a primary carrier of the access user and configure other component carriers as secondary carriers of the access user in the target component carrier set.
6. The apparatus of claim 5, wherein the assignment module, when determining an access user, is to:
and broadcasting the reference signal, and judging that a user is an access user when determining that a service cell selected by the user based on the sum of the reference signal received power and a set offset value belongs to the jurisdiction range of the device.
7. The apparatus of claim 5, wherein when computing the load balancing factor for a set of component carriers, the computing module is configured to:
respectively calculating the load sum of each member carrier and calculating the average load of all member carrier sets in the member carrier set according to the load when each member carrier in the member carrier set is selected as a primary carrier PCC and a secondary carrier SCC;
and calculating a load balance coefficient of one member carrier set according to the load sum of each member carrier and the average load of all the member carriers in the one member carrier set by combining the total number of the current access users.
8. The apparatus of claim 5, wherein when computing the throughput gain for any set of component carriers, the computing module is to:
respectively calculating the data transmission rate of each member carrier in any member carrier set of the access user according to a preset Shannon capacity formula;
respectively determining the corresponding transmission coefficient of the access user on each member carrier in any member carrier;
calculating the data transmission rate of the access user on any member carrier set according to the data transmission rate and the transmission coefficient corresponding to each member carrier;
and taking the data transmission rate of the access user on any member carrier set as the throughput gain of any member carrier set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510702590.7A CN106612522B (en) | 2015-10-26 | 2015-10-26 | Method and device for configuring component carrier in LTE-A heterogeneous network |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510702590.7A CN106612522B (en) | 2015-10-26 | 2015-10-26 | Method and device for configuring component carrier in LTE-A heterogeneous network |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106612522A CN106612522A (en) | 2017-05-03 |
| CN106612522B true CN106612522B (en) | 2020-06-30 |
Family
ID=58612859
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510702590.7A Active CN106612522B (en) | 2015-10-26 | 2015-10-26 | Method and device for configuring component carrier in LTE-A heterogeneous network |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106612522B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111385848B (en) * | 2018-12-27 | 2023-05-05 | 成都鼎桥通信技术有限公司 | Carrier reservation control method and device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101541086A (en) * | 2009-05-08 | 2009-09-23 | 华为技术有限公司 | Method and device for distributing carrier number |
| CN103582137A (en) * | 2012-07-19 | 2014-02-12 | 华为技术有限公司 | WLAN channel resource distributing method and device and wireless local area network communication system |
| CN104917600A (en) * | 2009-08-28 | 2015-09-16 | 华为技术有限公司 | Method, equipment and system for configuring member carrier under carrier aggregation scene |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102088781B (en) * | 2009-12-04 | 2013-07-24 | 鼎桥通信技术有限公司 | Carrier distribution method |
| CN102143531A (en) * | 2010-02-02 | 2011-08-03 | 中兴通讯股份有限公司 | Carrier management method, base station and system for carrier aggregation system |
| CN103687032B (en) * | 2012-09-24 | 2017-06-23 | 电信科学技术研究院 | A kind of main carrier system of selection and equipment |
| WO2014056152A1 (en) * | 2012-10-10 | 2014-04-17 | Empire Technology Development Llc | A carrier selection policy for joint scheduling for carrier aggregation in an lte-advanced system |
| KR20140119853A (en) * | 2013-03-27 | 2014-10-13 | 한국전자통신연구원 | Method and apparatus of primary component carrier selection based on ue mobility state and cell coverage |
| CN104427552B (en) * | 2013-09-02 | 2018-03-30 | 普天信息技术研究院有限公司 | A kind of method of load balancing in carrier aggregation |
-
2015
- 2015-10-26 CN CN201510702590.7A patent/CN106612522B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101541086A (en) * | 2009-05-08 | 2009-09-23 | 华为技术有限公司 | Method and device for distributing carrier number |
| CN104917600A (en) * | 2009-08-28 | 2015-09-16 | 华为技术有限公司 | Method, equipment and system for configuring member carrier under carrier aggregation scene |
| CN103582137A (en) * | 2012-07-19 | 2014-02-12 | 华为技术有限公司 | WLAN channel resource distributing method and device and wireless local area network communication system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106612522A (en) | 2017-05-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2761797B1 (en) | Methods and apparatus for interference management | |
| US9917669B2 (en) | Access point and communication system for resource allocation | |
| EP2521391B1 (en) | Method and base station comprising an apparatus for allocating edge frequency band resources | |
| WO2015127880A1 (en) | Base station frequency resource allocation method and network device | |
| CN101472339B (en) | Method for coordinating district interference | |
| CN101674680A (en) | Method and device for allocating bands and base station | |
| CN103731837A (en) | Spectrum resource distribution method and device | |
| CN101964980A (en) | Method and device for coordinating inter-cell interference | |
| WO2017101458A1 (en) | Resource allocation realization method and system, and centralized controller and base station | |
| Huang et al. | Cross-tier cooperation for optimal resource utilization in ultra-dense heterogeneous networks | |
| CN106888506A (en) | A kind of minizone of LTE is disturbed degree information and determines method and system | |
| KR20160031354A (en) | Method and apparatus for scheduling based on QoE | |
| CN102790739B (en) | The up coordinated dispatching method of multi-plot joint and base station | |
| CN106612522B (en) | Method and device for configuring component carrier in LTE-A heterogeneous network | |
| JP2014531835A (en) | Scheduling assignment method and apparatus in multipoint cooperative system | |
| CN106851830B (en) | Resource allocation method and device for LTE-A heterogeneous network | |
| CN102802162A (en) | Distributed interference coordination method for improving performance of cell edge users | |
| Zhang et al. | Congestion-aware user-centric cooperative base station selection in ultra-dense networks | |
| US9913170B2 (en) | Wireless communication methods and apparatus | |
| WO2016149916A1 (en) | Data transmission method and apparatus | |
| CN105208659B (en) | A kind of configuration method and macro station, micro- station of almost blank subframe | |
| EP3531752B1 (en) | Method and controller for low-overhead user equipment measurements | |
| CN106604311B (en) | Method and device for selecting transmission node participating in coordinated multi-point transmission | |
| Valkova-Jarvis et al. | Novel throughput quantile averaging methods for the proportional fair algorithm in indoor mobile networks | |
| CN106559881B (en) | Resource allocation method and device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |