CN104244428A - Interference coordination scheduling method and base stations - Google Patents

Abstract

The embodiment of the present invention discloses an interference coordination scheduling method and a base station, which relate to the field of communication technology and can reduce the same-frequency interference caused by user equipment in an FDD cell to edge user equipment in an adjacent FDD cell. The specific solution is: the first base station judges whether the user equipment in the first FDD cell interferes with the first user equipment, and if the user equipment in the first FDD cell interferes with the first user equipment, the first base station sends at least one second user equipment The service transmission of the device is scheduled by the first FDD cell to the first TDD cell. The present invention can be applied in FDD/TDD carrier aggregation network.

Description

Interference coordination scheduling method and base station

technical field

The invention relates to the field of communication technology, in particular to an interference coordination scheduling method and a base station.

Background technique

As user data requirements continue to increase, the industry proposes a carrier aggregation (CarrierAggregation, CA) technology, which supports aggregation between different component carriers (ComponentCarrier, CC). CA user equipment can use multiple CCs for communication at the same time to improve transmission rate and service quality; meanwhile, non-CA user equipment can still access different CCs independently.

In the prior art, in order to improve the throughput of user equipment in a frequency division duplex (Frequency Division Duplexing, FDD) network, a FDD/time division duplex (Time Division Duplexing, TDD) carrier aggregation scheme is proposed. As shown in Figure 1, in the FDD/TDD carrier aggregation solution, the FDD frequency band is used to cover the entire network of the cell, and on the basis of the entire network coverage of the FDD frequency band, the TDD frequency band is used to superimpose hot spots or key areas in the cell coverage, so that the TDD network can be used to share the load in the FDD network, and thus the throughput of the user equipment in the FDD network can be improved. In the FDD/TDD carrier aggregation scheme, the CA user equipment is the user equipment with the FDD cell access capability and the TDD cell access capability, and can access the FDD cell and the TDD cell at the same time; the non-CA user equipment Among the user equipments capable of accessing the FDD cell and the TDD cell, only the user equipment in any one of the FDD cell and the TDD cell can be accessed at the same time.

Among them, in the FDD/TDD carrier aggregation solution of the prior art, the FDD frequency band is used to cover the entire network of the cell, and the coverage area is relatively large. Therefore, as shown in FIG. 1 , there may be overlapped coverage areas, and when the user equipments in at least two adjacent FDD cells with overlapping coverage areas work in the same frequency band, then the edge user equipments of the adjacent FDD cells may be affected by the same frequency band from the neighboring cells. interference.

Contents of the invention

Embodiments of the present invention provide an interference coordination scheduling method and a base station, which are used to reduce co-channel interference caused by user equipment in an FDD cell to edge user equipment in an adjacent FDD cell.

In order to achieve the above object, embodiments of the present invention adopt the following technical solutions:

In the first aspect of the embodiments of the present invention, an interference coordination scheduling method is provided. The first frequency division duplex FDD cell and the second FDD cell are adjacent cells. The interference coordination scheduling method includes:

The first base station judges whether the user equipment in the first FDD cell interferes with the first user equipment, the first FDD cell is an FDD cell within the coverage of the first base station, and the first user equipment includes : accessing the second FDD cell for service transmission, and a user equipment within the overlapping coverage area of the first FDD cell and the second FDD cell, where the second FDD cell is within the coverage of the second base station The FDD cell;

If the user equipment in the first FDD cell interferes with the first user equipment, the first base station schedules service transmission of at least one second user equipment from the first FDD cell to the first TDD cell, The first TDD cell is a TDD cell within the coverage of the first base station, and the second user equipment is within the overlapping coverage area of the first FDD cell and the first TDD cell, by accessing the A user equipment that performs service transmission in the first FDD cell and is capable of accessing a TDD cell.

With reference to the first aspect, in a first possible implementation manner, the first base station determines whether the user equipment in the first FDD cell interferes with the first user equipment, including:

The first base station obtains a first resource block RB utilization rate, and the first RB utilization rate is used to represent the total RB occupancy of the first FDD cell by all user equipments in the first FDD cell;

If the first RB utilization rate is greater than a first utilization rate threshold, it is determined that the user equipment in the first FDD cell interferes with the first user equipment.

With reference to the first aspect, in a second possible implementation manner, the first base station determines whether the user equipment in the first FDD cell interferes with the first user equipment, including:

If the first base station receives the first interference indication from the second base station, the first base station determines that the user equipment in the first FDD cell interferes with the first user equipment;

Wherein, the first interference indication is used to indicate that the user equipment of the first FDD cell generates interference to the first user equipment, and the first interference indication is the second base station according to the second FDD cell The RB utilization rate is sent to the first base station through the X2 interface between the second base station and the first base station.

With reference to the first aspect or the first possible implementation of the first aspect or the second possible implementation of the first aspect, in a third possible implementation, the first base station acquires the second RB utilization , the second RB utilization rate is used to characterize the total RB occupancy of the first FDD cell by the third user equipment, where the third user equipment includes: accessing the first FDD cell for service transmission, a user equipment within an overlapping coverage area of the first FDD cell and the second FDD cell;

If the second RB utilization rate is greater than the second utilization rate threshold, send a second interference indication to the second base station through the X2 interface between the first base station and the second base station, and the second interference The indication is used to indicate that the user equipment in the second FDD cell interferes with the third user equipment.

With reference to the first aspect or the first possible implementation of the first aspect or the second possible implementation of the first aspect, in a fourth possible implementation, the first base station sends at least one second user The service transmission of the device is scheduled by the first FDD cell to the first TDD cell, including:

The first base station determines, according to the attribute of the second user equipment, the load balancing priority of the second user equipment when scheduling the service transmission of the second user equipment, and the attribute of the second user equipment is used for indicating that the second user equipment is carrier aggregation CA user equipment, or that the second user equipment is a non-CA user equipment, and that the load balancing priority of the CA user equipment is higher than the load balancing priority of the non-CA user equipment;

The first base station sequentially schedules the service transmission of the second user equipment from the first FDD cell to the first TDD cell according to the load balancing priority of the second user equipment until the first The RB utilization rate of the FDD cell is less than the first utilization rate threshold.

With reference to the fourth possible implementation of the first aspect, in a fifth possible implementation, the service transmission includes data information transmission and control information transmission;

The first base station scheduling the service transmission of the second user equipment from the first FDD cell to the first TDD cell includes:

When the second user equipment is the CA user equipment, and the second user equipment does not access the first TDD cell for service transmission, the first base station transmits the The data information transmission is scheduled by the first FDD cell to the first TDD cell, and the control information transmission of the second user equipment is still performed in the first FDD cell;

When the second user equipment is the CA user equipment, and the second user equipment simultaneously accesses the first TDD cell for service transmission, the first base station connects the second user equipment to the TDD cell The service transmission performed by the first FDD cell is scheduled by the first FDD cell to the first TDD cell;

When the second user equipment is the non-CA user equipment, the first base station schedules the data information transmission and the control information transmission of the second user equipment from the first FDD cell to the Describe the first TDD cell.

According to the second aspect of the embodiments of the present invention, a base station is also provided, including:

The first frequency division duplex FDD cell and the second FDD cell are adjacent cells, and the base station includes:

A judging unit, configured to judge whether the user equipment in the first FDD cell interferes with the first user equipment, the first FDD cell is an FDD cell within the coverage of the base station, and the first user equipment includes: A user equipment that enters the second FDD cell for service transmission and is within the overlapping coverage area of the first FDD cell and the second FDD cell, where the second FDD cell is an FDD within the coverage of the second base station Community;

A scheduling unit, configured to schedule the service transmission of at least one second user equipment by the first FDD cell if the judging unit judges that the user equipment in the first FDD cell interferes with the first user equipment To the first TDD cell, the first TDD cell is a TDD cell within the coverage of the base station, and the second user equipment is within the overlapping coverage area of the first FDD cell and the first TDD cell, by A user equipment that accesses the first FDD cell for service transmission and is capable of accessing a TDD cell.

With reference to the second aspect, in a first possible implementation manner, the judging unit includes:

An obtaining module, configured to obtain a first resource block RB utilization rate of the first FDD cell, where the first RB utilization rate is used to represent the total resource block RB utilization rate of all user equipments in the first FDD cell to the first FDD cell occupancy of the RB;

A first determining module, configured to determine that the user equipment in the first FDD cell interferes with the first user equipment if the first RB utilization rate acquired by the acquiring module is greater than a first utilization rate threshold.

In combination with the second aspect, in a second possible implementation manner, it includes:

a receiving unit, configured to receive a first interference indication from the second base station;

The judging unit is specifically configured to, if the receiving unit receives the first interference indication, determine that the user equipment in the first FDD cell interferes with the first user equipment;

Wherein, the first interference indication is used to indicate that the user equipment of the first FDD cell generates interference to the first user equipment, and the first interference indication is the second base station according to the second FDD cell The RB utilization rate is sent to the base station through the X2 interface between the second base station and the base station.

In combination with the second aspect or the first possible implementation manner of the first aspect or the second possible implementation manner of the first aspect, the third possible implementation manner includes:

An acquiring unit, configured to acquire a second RB utilization rate of the first FDD cell, where the second RB utilization rate is used to characterize the total RB occupancy of the first FDD cell by a third user equipment, the The third user equipment includes: accessing the first FDD cell for service transmission, and being in the overlapping coverage area of the first FDD cell and the second FDD cell;

a sending unit, configured to send the second RB utilization rate to the second base station through the X2 interface between the base station and the second base station if the second RB utilization rate acquired by the acquiring unit is greater than a second utilization rate threshold; Two interference indications, the second interference indication is used to indicate that the user equipment in the second FDD cell interferes with the third user equipment.

In combination with the second aspect or the first possible implementation manner of the second aspect or the second possible implementation manner of the second aspect, in a fourth possible implementation manner, the scheduling unit includes:

The second determination module is configured to determine, according to the attributes of the second user equipment, the load balancing priority of the second user equipment when scheduling the service transmission of the second user equipment, and the attributes of the second user equipment It is used to indicate that the second user equipment is a carrier aggregation CA user equipment, or that the second user equipment is a non-CA user equipment, and that the load balancing priority of the CA user equipment is higher than that of the non-CA user equipment class;

A scheduling module, configured to sequentially schedule service transmission of the second user equipment from the first FDD cell to the first user equipment according to the load balancing priority of the second user equipment determined by the second determination module For a TDD cell, until the RB utilization rate of the first FDD cell is less than the first utilization rate threshold.

With reference to the second aspect, in a fifth possible implementation manner, the service transmission includes data information transmission and control information transmission;

The scheduling module is specifically used for:

When the second user equipment is the CA user equipment, and the second user equipment does not access the first TDD cell for service transmission, transmit the data information of the second user equipment by the The first FDD cell is scheduled to the first TDD cell, and the control information transmission of the second user equipment is still performed in the first FDD cell;

When the second user equipment is the CA user equipment, and the second user equipment simultaneously accesses the first TDD cell for service transmission, accessing the second user equipment to the first FDD cell The service transmission performed is scheduled by the first FDD cell to the first TDD cell;

When the second user equipment is the non-CA user equipment, scheduling the data information transmission and the control information transmission of the second user equipment from the first FDD cell to the first TDD cell .

In the interference coordination scheduling method and the base station provided by the embodiments of the present invention, the first base station can send the first FDD cell The data transmission of at least one second user equipment is scheduled to the first TDD cell, which can reduce the load load of the first FDD cell, thereby increasing the proportion of available spectrum resources in the first FDD cell, so that the first base station can be the first TDD cell. The user equipment in the FDD cell provides more available spectrum resources, thereby reducing co-channel interference caused by the user equipment in the first FDD cell under the first base station to the first user equipment in the adjacent second FDD cell.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. For those skilled in the art, other drawings can also be obtained according to these drawings without any creative effort.

FIG. 1 is a schematic diagram of an FDD/TDD carrier aggregation network;

FIG. 2 is a flowchart of an interference coordination scheduling method provided by an embodiment of the present invention;

FIG. 3 is a flowchart of another interference coordination scheduling method provided by an embodiment of the present invention;

FIG. 4 is a flow chart of another interference coordination scheduling method provided by an embodiment of the present invention;

FIG. 5 is a flowchart of another interference coordination scheduling method provided by an embodiment of the present invention;

FIG. 6 is a schematic structural diagram of a base station provided by an embodiment of the present invention;

FIG. 7 is a schematic structural diagram of another base station provided by an embodiment of the present invention;

FIG. 8 is a schematic structural diagram of another base station provided by an embodiment of the present invention;

FIG. 9 is a schematic structural diagram of another base station provided by an embodiment of the present invention;

FIG. 10 is a schematic structural diagram of another base station provided by an embodiment of the present invention;

FIG. 11 is a schematic structural diagram of another base station provided by an embodiment of the present invention;

FIG. 12 is a schematic structural diagram of another base station provided by an embodiment of the present invention;

FIG. 13 is a schematic structural diagram of another base station provided by an embodiment of the present invention.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

The various techniques described in this article can be used in Long Term Evolution (LTE) systems, as well as other such communication systems.

The user equipment may be a wireless terminal, and the wireless terminal may be a device that provides voice and/or data connectivity to the user, a handheld device with a wireless connection function, or other processing devices connected to a wireless modem. The wireless terminal can communicate with one or more core networks via a radio access network (for example, RAN, Radio Access Network), and the wireless terminal can be a mobile terminal, such as a mobile phone (or called a "cellular" phone) and a mobile terminal The computers, which may be, for example, portable, pocket, handheld, built-in or vehicle-mounted mobile devices, exchange speech and/or data with the radio access network. For example, Personal Communication Service (PCS, Personal Communication Service) telephone, cordless telephone, Session Initiation Protocol (SIP) telephone, Wireless Local Loop (WLL, Wireless Local Loop) station, Personal Digital Assistant (PDA, Personal Digital Assistant) and other equipment . Wireless terminal can also be called system, subscriber unit (Subscriber Unit), subscriber station (SubscriberStation), mobile station (Mobile Station), mobile station (Mobile), remote station (RemoteStation), access point (Access Point), remote terminal (Remote Terminal), Access Terminal, User Terminal, User Agent, User Device, or User Equipment.

A base station (eg, access point) can be a device in an access network that communicates with wireless terminals over the air-interface through one or more sectors. The base station can be used to convert received over-the-air frames to and from IP packets, acting as a router between the wireless terminal and the rest of the access network, which can include an Internet Protocol (IP) network. The base station may also coordinate attribute management for the air interface. For example, the base station may be an evolved base station (NodeB or eNB or e-NodeB, evolutional Node B) in LTE, which is not limited in the present invention.

Additionally, the terms "system" and "network" are often used herein interchangeably. The term "and/or" in this article is just an association relationship describing associated objects, which means that there can be three relationships, for example, A and/or B can mean: A exists alone, A and B exist simultaneously, and there exists alone B these three situations. In addition, the character "/" in this article generally indicates that the contextual objects are an "or" relationship.

Example 1

An interference coordination scheduling method provided by an embodiment of the present invention, as shown in FIG. 2 , can be applied to a frequency division duplex (Frequency Division Duplexing, FDD)/time division duplex (Time Division Duplexing, TDD) aggregated carrier network , the method includes the following steps:

S101. The first base station determines whether user equipment in a first FDD cell interferes with the first user equipment.

Wherein, the first FDD cell is an FDD cell within the coverage of the first base station, and the first user equipment includes: accessing the second FDD cell for service transmission, and being within the overlapping coverage area of the first FDD cell and the second FDD cell For the user equipment, the second FDD cell is an FDD cell within the coverage of the second base station.

Exemplarily, in the FDD/TDD carrier aggregation network shown in FIG. 1 , the user equipment 1 performs service transmission for accessing the second FDD cell, and is a user within the overlapping coverage area of the first FDD cell and the second FDD cell equipment, user equipment 1 is the first user equipment in this embodiment of the present invention.

S102. If the user equipment in the first FDD cell interferes with the first user equipment, the first base station schedules service transmission of at least one second user equipment from the first FDD cell to the first TDD cell.

Wherein, the first TDD cell is a TDD cell within the coverage of the first base station, and the second user equipment is within the overlapping coverage area of the first FDD cell and the first TDD cell, and performs service transmission by accessing the first FDD cell, and has A user equipment capable of accessing a TDD cell. The user equipment of the first FDD cell is the user equipment within the coverage area of the first FDD cell that performs service transmission by accessing the first FDD cell.

Exemplarily, as shown in FIG. 1, the user equipment 2 is a user equipment that performs service transmission by accessing the first FDD cell in the overlapping coverage area of the first FDD cell and the first TDD cell, and the user equipment 2 is the embodiment of the present invention. The second user equipment in the embodiment.

Wherein, since user equipment 2, user equipment 5, user equipment 4, and user equipment 3 are all within the coverage area of the first FDD cell, and all perform service transmission by accessing the first FDD cell, the user equipment of the first FDD cell It may include: user equipment 2, user equipment 3, user equipment 5, and user equipment 4 as shown in FIG. 1 .

In the embodiment of the present invention, since the user equipments in the first FDD cell (user equipment 2, user equipment 3, user equipment 5, and user equipment 4 shown in FIG. The shown user equipment 1) generates co-channel interference. Therefore, when the first base station determines that the user equipment in the first FDD cell interferes with the first user equipment, it can send at least one second user equipment (as shown in FIG. 1 The traffic transmission of the illustrated user equipment 2) is scheduled by the first FDD cell to the first TDD cell. Wherein, as shown in FIG. 1 , the user equipment 2 is located in the overlapping coverage area of the first FDD cell and the second FDD cell, the user equipment 2 has both the FDD cell access capability and the TDD cell access capability, and accesses the second FDD cell When the TDD cell performs service transmission, the user equipment 2 is a second user equipment.

It should be noted that when the user equipment accesses the network, it will report its own capability information to the base station, and the capability information can be used to indicate that the user equipment only has the FDD cell access capability, the user equipment only has the TDD cell access capability, or the user equipment The device has both FDD cell access capability and TDD cell access capability. According to the capability information reported by the user equipment, the first base station may have both the FDD cell access capability and the TDD cell access capability in the overlapping coverage area of the first FDD cell and the first TDD cell, and access the first FDD cell for The user equipment for service transmission is determined as the second user equipment.

Optionally, in an application scenario of the embodiment of the present invention, the method for the first base station to determine whether the user equipment in the first FDD cell interferes with the first user equipment may include: the first base station obtains a first resource block (Resource Block, RB) utilization rate, the first RB utilization rate is used to characterize the occupancy of all user equipments in the first FDD cell to the total RB of the first FDD cell; if the first RB utilization rate is greater than the first utilization rate threshold, then It is determined that the user equipment in the first FDD cell generates interference to the first user equipment.

Optionally, in another application scenario of the embodiment of the present invention, the method for the first base station to determine whether the user equipment in the first FDD cell interferes with the first user equipment may include: if the first base station receives a message from the second The first interference indication of the base station, the first base station determines that the user equipment in the first FDD cell generates interference to the first user equipment.

Wherein, the first interference indication is used to indicate that the user equipment in the first FDD cell interferes with the first user equipment, and the first interference indication is that the second base station communicates with the first base station through the second base station and the first base station according to the RB utilization rate of the second FDD cell. The X2 interface between them is sent to the first base station.

In the interference coordination scheduling method provided by the embodiment of the present invention, the first base station can assign at least one The data transmission of the second user equipment is scheduled to the first TDD cell, which can reduce the load of the first FDD cell, thereby increasing the proportion of available spectrum resources in the first FDD cell, so that the first base station can be the first FDD cell The user equipment in the first FDD cell provides more available spectrum resources, thereby reducing co-channel interference caused by the user equipment in the first FDD cell under the first base station to the first user equipment in the adjacent second FDD cell.

Example 2

An embodiment of the present invention provides an interference coordination scheduling method, and the interference coordination scheduling method may include:

S201. The first base station determines whether user equipment in a first FDD cell interferes with the first user equipment.

Optionally, in an application scenario of the embodiment of the present invention, the first base station may determine the user equipment in the first FDD cell according to the total RB occupation of the first FDD cell by all user equipment in the first FDD cell Whether to generate interference to the first user equipment.

Specifically, in the first application scenario, as shown in Figure 3, S201 may include S201a-S201b:

S201a. The first base station acquires a first RB utilization rate.

Wherein, the first RB utilization rate is used to represent the total RB occupation of the first FDD cell by all user equipments in the first FDD cell.

It should be noted that, since the usage of RBs in a cell in each Transmission Time Interval (Transmission Time Interval, TTI) (i.e., RB utilization rate) will be determined according to the number of user equipments accessing the cell and the number of each user equipment The number of RBs used varies; therefore, in the embodiment of the present invention, when calculating the first RB utilization rate, K TTIs can be used as a statistical cycle, and the average value of the RB utilization rate in K TTIs can be calculated, and the calculated The average value of the obtained RB utilization rate is used as the RB utilization rate in the statistical period.

Specifically, the method for the first base station to obtain the first RB utilization rate may include: the first base station counts the total number of user equipments within K TTIs of all user equipments that access the first FDD cell for service transmission within the coverage of the first FDD cell The total number of RBs used (abbreviation: the number of RBs used); the first base station counts the total number of RBs available to the user equipment in the first FDD cell in K TTIs (abbreviation: the number of available RBs); the first base station calculates the number of RBs used and The ratio of the number of available RBs is used to obtain the first RB utilization rate.

Wherein, the first base station may use the following formula 1 to calculate the first RB utilization rate:

$\mathrm{\β}=\frac{\underset{i=1}{\overset{K}{\mathrm{\Σ}}}{\mathrm{RB}}_i}{K\×{\mathrm{RB}}_{\mathrm{tot}}}$ (Formula 1)

Among them, β is used to indicate the first RB utilization rate of the first FDD cell; K is the total number of TTIs in the statistical period, K is a positive integer, K≥1; RB _tot is used to indicate that the first FDD cell is available in one TTI The total number of RBs used by the user equipment, RB _i is used to indicate the total number of RBs used by all user equipments in the i-th TTI.

Exemplarily, the first base station calculates the first RB utilization rate of the first FDD cell. If it is assumed that K=4, that is, the first base station counts the number of used RBs and the number of available RBs in 4 TTIs, and the statistics period is 4 TTIs. Wherein, RB _i is the total number of RBs used by all user equipments in the i-th TTI, and RB _tot is the total number of RBs available to user equipments in one TTI of the first FDD cell. Assuming that RB ₁ =3, RB ₂ =4, RB ₃ =5, RB ₄ =4, and RB _tot =6, the first base station can calculate the first RB utilization rate according to Formula 1:

$\mathrm{<span\; class="notranslate">\; \&beta;</span>}<span\; class="notranslate">\; =</span>\frac{\underset{\mathrm{<span\; class="notranslate">\; i</span>}<span\; class="notranslate">\; =</span>\mathrm{<span\; class="notranslate">\; 1</span>}}{\overset{\mathrm{<span\; class="notranslate">\; 4</span>}}{\mathrm{<span\; class="notranslate">\; \&Sigma;</span>}}}{\mathrm{<span\; class="notranslate">\; RB</span>}}_{\mathrm{<span\; class="notranslate">\; i</span>}}}{\mathrm{<span\; class="notranslate">\; 4</span>}<span\; class="notranslate">\; \&times;</span>{\mathrm{<span\; class="notranslate">\; RB</span>}}_{\mathrm{<span\; class="notranslate">\; tot</span>}}}<span\; class="notranslate">\; =</span>\frac{{\mathrm{<span\; class="notranslate">\; RB</span>}}_{\mathrm{<span\; class="notranslate">\; 1</span>}}<span\; class="notranslate">\; +</span>{\mathrm{<span\; class="notranslate">\; RB</span>}}_{\mathrm{<span\; class="notranslate">\; 2</span>}}<span\; class="notranslate">\; +</span>{\mathrm{<span\; class="notranslate">\; RB</span>}}_{\mathrm{<span\; class="notranslate">\; 3</span>}}<span\; class="notranslate">\; +</span>{\mathrm{<span\; class="notranslate">\; RB</span>}}_{\mathrm{<span\; class="notranslate">\; 4</span>}}}{\mathrm{<span\; class="notranslate">\; 4</span>}<span\; class="notranslate">\; \&times;</span>{\mathrm{<span\; class="notranslate">\; RB</span>}}_{\mathrm{<span\; class="notranslate">\; tot</span>}}}<span\; class="notranslate">\; =</span>\frac{\mathrm{<span\; class="notranslate">\; 3</span>}<span\; class="notranslate">\; +</span>\mathrm{<span\; class="notranslate">\; 4</span>}<span\; class="notranslate">\; +</span>\mathrm{<span\; class="notranslate">\; 5</span>}<span\; class="notranslate">\; +</span>\mathrm{<span\; class="notranslate">\; 4</span>}}{\mathrm{<span\; class="notranslate">\; 4</span>}<span\; class="notranslate">\; \&times;</span>\mathrm{<span\; class="notranslate">\; 6</span>}}<span\; class="notranslate">\; =</span>\mathrm{<span\; class="notranslate">\; 66.7</span>}<span\; class="notranslate">\; \%</span>$

The first RB utilization rate can be calculated from the above example: β=66.7%.

S201b. If the first RB utilization rate is greater than the first utilization rate threshold, the first base station determines that the user equipment in the first FDD cell causes interference to the first user equipment.

Wherein, the first utilization rate threshold may be a fixed value preset in the first base station, and the fixed value is obtained by a device manufacturer based on a large number of simulation experiments. The first utilization ratio threshold may also be determined by the first base station according to the usage of RBs by the user equipment in the first FDD cell and the network congestion status in the first FDD cell. For example, the first base station can count the RB utilization rate of the first FDD cell in real time, and monitor the network congestion situation in the first FDD cell in real time; determine the first utilization rate threshold according to the statistical and monitoring results, and the first utilization rate threshold can be the first utilization rate threshold. When a certain degree of network congestion occurs in an FDD cell, the upper limit value of the RB utilization rate of the first FDD cell. In this embodiment of the present invention, there is no limitation on the specific method for setting the first utilization threshold.

Optionally, in the second application scenario of the embodiment of the present invention, after receiving the first interference indication sent by the second base station, the first base station may determine that the user equipment in the first FDD cell interfere.

Specifically, in the second application scenario, as shown in Figure 4, S201a-S201b in Figure 3 can be replaced by S201c:

S201c. If the first base station receives the first interference indication from the second base station, the first base station determines that the user equipment in the first FDD cell generates interference to the first user equipment.

Wherein, the first interference indication is used to indicate that the user equipment in the first FDD cell interferes with the first user equipment, and the first interference indication is that the second base station communicates with the second base station according to the RB utilization rate of the second FDD cell. The X2 interface between one base station is sent to the first base station.

Optionally, in a situation of the embodiment of the present invention, an Interference Coordination Request For Carrier Aggregation Scenario (ICR for CA) may be added on the X2 interface between the first base station and the second base station message, and carry the first interference indication in the request message for interference coordination in the above-mentioned carrier aggregation scenario.

Optionally, in another situation of the embodiment of the present invention, the load information (Load Information, LI) in the original protocol of the X2 interface between the first base station and the second base station can be added to the carrier aggregation scenario downlink Interference Coordination Request (DL InterferenceCoordination Request For Carrier Aggregation Scenario, DL ICR forCA) field, and this field carries the first interference indication.

Before performing S201c, the method in this embodiment of the present invention may include S201':

S201'. When determining that the third RB utilization rate is greater than the third utilization rate threshold, the second base station sends the first interference indication to the first base station.

Specifically, as shown in Figure 5, S201' may include S201a'-S201c':

S201a'. The second base station acquires a third RB utilization rate.

Wherein, the third RB utilization rate is used to characterize the total RB occupation of the second FDD cell by the first user equipment, and the first user equipment includes: accessing the second FDD cell for service transmission, being in the first FDD cell and the second The user equipments in the overlapping coverage area of the two FDD cells. As shown in FIG. 1 , user equipment 1 may be a first user equipment in this embodiment of the present invention.

It should be noted that, since the usage of RBs in a cell in each transmission time interval (that is, the RB utilization rate) will vary according to the number of user equipments accessing the cell and the number of RBs used by each user equipment Therefore, in this embodiment of the present invention, when calculating the third RB utilization rate, K TTIs may be used as a statistical period, and the average value of the RB utilization rates of all first user equipments within K TTIs may be calculated, and the calculated The obtained average value of the RB utilization rates of all first user equipments is used as the RB utilization rates of all first user equipments within the statistical period.

Specifically, the method for the second base station to obtain the third RB utilization rate may include: the second base station counts the total number of RBs used by each first user equipment in each TTI of the K TTIs; the second base station counts the first user equipment The total number of devices; the second base station counts the total number of RBs that can be used by all user equipments that access the second FDD cell for service transmission in each TTI of the second FDD cell in each of the K TTIs; the second base station according to the above statistical results, Calculate the third RB utilization.

Wherein, the second base station may use the following formula 2 to calculate the third RB utilization rate:

$\mathrm{\&alpha;}=\frac{\underset{k=1}{\overset{K}{\mathrm{\&Sigma;}}}\underset{i=1}{\overset{I}{\mathrm{\&Sigma;}}}{\mathrm{RB}}_{i,k}}{K\&times;{\mathrm{RB}}_{\mathrm{tot}}}$ (Formula 2)

Among them, α is used to represent the third RB utilization rate of the second FDD cell; K is the total number of TTIs in the statistical period, K is a positive integer, K≥1; I is the number of the first user equipment, and I is a positive integer, I≥1; RB _tot is used to represent the total number of RBs that can be used by all user equipments that access the second FDD cell for service transmission in each TTI of the K TTIs in the second FDD cell, and RB _i,k is used to represent The total number of RBs used by the i-th first user equipment in the k-th TTI in the K TTIs.

Exemplarily, the second base station calculates the third RB utilization rate, assuming that K=2, that is, the statistics period is 2 TTIs, and I=3, that is, the number of first user equipments is three. Among them, RB _i,k is the total number of RBs used by the i-th first user equipment in the k-th TTI of the K TTIs, and RB _tot is the available RB for the second FDD cell in each TTI of the K TTIs The total number of RBs used by all user equipments accessing the second FDD cell for service transmission, RB _tot =18.

Assume that RB _1,1 = 3, that is, the total number of RBs used by the first first user equipment in the first TTI of the two TTIs is 3; RB _1,2 = 4, that is, the first first user equipment in The total number of RBs used in the second TTI of the two TTIs is 4; RB _2,1 = 5, that is, the total number of RBs used by the second first user equipment in the first TTI of the two TTIs is 5 ; RB _2,2 = 3, that is, the total number of RBs used by the second first user equipment in the second TTI of the two TTIs is 3; RB _3,1 = 4, that is, the third first user equipment in 2 The total number of RBs used in the first TTI of the TTIs is 4; RB _3,2 =4, that is, the total number of RBs used by the third first user equipment in the second TTI of the two TTIs is 4. Thus, the second base station can calculate the third RB utilization rate according to Formula 2:

$\begin{array}{c}\mathrm{<span\; class="notranslate">\; \&alpha;</span>}<span\; class="notranslate">\; =</span>\frac{\underset{\mathrm{<span\; class="notranslate">\; k</span>}<span\; class="notranslate">\; =</span>\mathrm{<span\; class="notranslate">\; 1</span>}}{\overset{\mathrm{<span\; class="notranslate">\; 2</span>}}{\mathrm{<span\; class="notranslate">\; \&Sigma;</span>}}}\underset{\mathrm{<span\; class="notranslate">\; i</span>}<span\; class="notranslate">\; =</span>\mathrm{<span\; class="notranslate">\; 1</span>}}{\overset{\mathrm{<span\; class="notranslate">\; 3</span>}}{\mathrm{<span\; class="notranslate">\; \&Sigma;</span>}}}{\mathrm{<span\; class="notranslate">\; RB</span>}}_{\mathrm{<span\; class="notranslate">\; i</span>}<span\; class="notranslate">\; ,</span>\mathrm{<span\; class="notranslate">\; k</span>}}}{\mathrm{<span\; class="notranslate">\; 2</span>}<span\; class="notranslate">\; \&times;</span>{\mathrm{<span\; class="notranslate">\; RB</span>}}_{\mathrm{<span\; class="notranslate">\; tot</span>}}}<span\; class="notranslate">\; =</span>\frac{\underset{\mathrm{<span\; class="notranslate">\; k</span>}<span\; class="notranslate">\; =</span>\mathrm{<span\; class="notranslate">\; 1</span>}}{\overset{\mathrm{<span\; class="notranslate">\; 2</span>}}{\mathrm{<span\; class="notranslate">\; \&Sigma;</span>}}}{\mathrm{<span\; class="notranslate">\; RB</span>}}_{\mathrm{<span\; class="notranslate">\; 1</span>}<span\; class="notranslate">\; ,</span>\mathrm{<span\; class="notranslate">\; k</span>}}<span\; class="notranslate">\; +</span>\underset{\mathrm{<span\; class="notranslate">\; k</span>}<span\; class="notranslate">\; =</span>\mathrm{<span\; class="notranslate">\; 1</span>}}{\overset{\mathrm{<span\; class="notranslate">\; 2</span>}}{\mathrm{<span\; class="notranslate">\; \&Sigma;</span>}}}{\mathrm{<span\; class="notranslate">\; RB</span>}}_{\mathrm{<span\; class="notranslate">\; 2</span>}<span\; class="notranslate">\; ,</span>\mathrm{<span\; class="notranslate">\; k</span>}}<span\; class="notranslate">\; +</span>\underset{\mathrm{<span\; class="notranslate">\; k</span>}<span\; class="notranslate">\; =</span>\mathrm{<span\; class="notranslate">\; 1</span>}}{\overset{\mathrm{<span\; class="notranslate">\; 2</span>}}{\mathrm{<span\; class="notranslate">\; \&Sigma;</span>}}}{\mathrm{<span\; class="notranslate">\; RB</span>}}_{\mathrm{<span\; class="notranslate">\; 3</span>}<span\; class="notranslate">\; ,</span>\mathrm{<span\; class="notranslate">\; k</span>}}}{\mathrm{<span\; class="notranslate">\; 2</span>}<span\; class="notranslate">\; \&times;</span>{\mathrm{<span\; class="notranslate">\; RB</span>}}_{\mathrm{<span\; class="notranslate">\; tot</span>}}}\\ <span\; class="notranslate">\; =</span>\frac{{\mathrm{<span\; class="notranslate">\; RB</span>}}_{\mathrm{<span\; class="notranslate">\; 1,1</span>}}<span\; class="notranslate">\; +</span>{\mathrm{<span\; class="notranslate">\; RB</span>}}_{\mathrm{<span\; class="notranslate">\; 1,2</span>}}<span\; class="notranslate">\; +</span>{\mathrm{<span\; class="notranslate">\; RB</span>}}_{\mathrm{<span\; class="notranslate">\; 2,1</span>}}<span\; class="notranslate">\; +</span>{\mathrm{<span\; class="notranslate">\; RB</span>}}_{\mathrm{<span\; class="notranslate">\; 2,2</span>}}<span\; class="notranslate">\; +</span>{\mathrm{<span\; class="notranslate">\; RB</span>}}_{\mathrm{<span\; class="notranslate">\; 3,1</span>}}<span\; class="notranslate">\; +</span>{\mathrm{<span\; class="notranslate">\; RB</span>}}_{\mathrm{<span\; class="notranslate">\; 3,2</span>}}}{\mathrm{<span\; class="notranslate">\; 2</span>}<span\; class="notranslate">\; \&times;</span>{\mathrm{<span\; class="notranslate">\; RB</span>}}_{\mathrm{<span\; class="notranslate">\; tot</span>}}}<span\; class="notranslate">\; =</span>\frac{\mathrm{<span\; class="notranslate">\; 3</span>}<span\; class="notranslate">\; +</span>\mathrm{<span\; class="notranslate">\; 4</span>}<span\; class="notranslate">\; +</span>\mathrm{<span\; class="notranslate">\; 5</span>}<span\; class="notranslate">\; +</span>\mathrm{<span\; class="notranslate">\; 3</span>}<span\; class="notranslate">\; +</span>\mathrm{<span\; class="notranslate">\; 4</span>}<span\; class="notranslate">\; +</span>\mathrm{<span\; class="notranslate">\; 4</span>}}{\mathrm{<span\; class="notranslate">\; 2</span>}<span\; class="notranslate">\; \&times;</span>\mathrm{<span\; class="notranslate">\; 18</span>}}<span\; class="notranslate">\; =</span>\mathrm{<span\; class="notranslate">\; 63.9</span>}<span\; class="notranslate">\; \%</span>\end{array}$

The third RB utilization rate can be calculated from the above example: α=63.8%.

S201b' The second base station judges whether the third RB utilization rate is greater than a third utilization rate threshold.

Wherein, the third utilization threshold may be a fixed value preset in the second base station, and the fixed value is obtained by the equipment manufacturer according to a large number of simulation experiments; the third utilization threshold may also be the second base station according to all the first A user equipment's use of RBs and the service quality of the first user equipment in the second FDD cell are determined. For example, the second base station can count the RB utilization rate of the first user equipment in the second FDD cell in real time, and monitor the first user equipment in real time. Second, the service quality of the first user equipment in the FDD cell; determine the third utilization rate threshold according to the statistics and monitoring results, and the third utilization rate threshold can affect the service quality of the first user equipment in the second FDD cell. The upper limit value of the RB utilization rate of the first user equipment in the FDD cell. This embodiment of the present invention does not specifically limit it.

Specifically, if the third RB utilization rate is greater than the third utilization rate threshold, continue to execute S201c':

S201c', the second base station sends the first interference indication to the first base station through the X2 interface between the first base station and the second base station.

It should be noted that, for the first interference indication, reference may be made to the relevant description of the first interference indication in S201c, which will not be repeated here in this embodiment.

Wherein, after the first base station determines that the user equipment in the first FDD cell interferes with the first user equipment, it may schedule the service transmission of at least one second user equipment from the first FDD cell to the first TDD cell, so as to reduce the Co-channel interference generated by user equipment in a first FDD cell of a base station to the first user equipment. Wherein, the method for the first base station to schedule the service transmission of at least one second user equipment from the first FDD cell to the first TDD cell may specifically include S202-S203:

S202. The first base station determines, according to the attribute of the second user equipment, the load balancing priority of the second user equipment when scheduling service transmission of the second user equipment.

It should be noted that when the user equipment accesses the network, it can report the access capability information of the user equipment to the base station, and the access capability information can be used to indicate that the user equipment only has the FDD cell access capability, and the user equipment only has the FDD cell access capability. The TDD cell access capability or the user equipment has both the FDD cell access capability and the TDD cell access capability. The first base station may, according to the access capability information reported by the user equipment, place the overlapping coverage area of the first FDD cell and the first TDD cell, have both the FDD cell access capability and the TDD cell access capability, and access the first FDD cell The user equipment performing service transmission in the cell is determined as the second user equipment.

Wherein, the attribute of the second user equipment is used to indicate that the second user equipment is a carrier aggregation (Carrier Aggregation, CA) user equipment, or the attribute of the second user equipment is used to indicate that the second user equipment is a non-CA user equipment; the CA user equipment The load balancing priority of the user equipment is higher than that of non-CA user equipment.

Among them, the CA user equipment is the user equipment that can access the FDD cell and the TDD cell at the same time among the second user equipment with the FDD cell access capability and the TDD cell access capability, that is, the service transmission of the CA user equipment can be Simultaneously on the FDD cell and the TDD cell, and the non-CA user equipment is the second user equipment with the FDD cell access capability and the TDD cell access capability, and can only access the FDD cell or the TDD cell user equipment at the same time, that is Non-CA user equipment can only perform service transmission on one of the FDD cell or TDD cell at the same time, and non-CA user equipment will experience millisecond-level interruptions when switching from FDD cells to TDD cells, which will affect service quality. A base station preferentially schedules the CA user equipment, and the method of preferentially scheduling the CA user equipment fully considers the experience of the user.

It should be noted that, when the second user equipment is a CA user equipment, the second user equipment may include two types of user equipment. A type of user equipment is: in the overlapping coverage area of the first FDD cell and the first TDD cell, it accesses the first FDD cell for service transmission, and does not access the first TDD cell for service transmission, but has TDD cell access The other type of user equipment is: in the overlapping coverage area of the first FDD cell and the first TDD cell, users who access the first FDD cell for service transmission and simultaneously access the first TDD cell for service transmission equipment.

S203. The first base station sequentially schedules the service transmission of the second user equipment from the first FDD cell to the first TDD cell according to the load balancing priority of the second user equipment until the RB utilization rate of the first FDD cell is lower than the first utilization rate of the first FDD cell. rate threshold.

Exemplarily, since the load balancing priority of the CA user equipment is higher than that of the non-CA user equipment, the first base station schedules the service transmission of the second user equipment from the first FDD cell to the first In the TDD cell process, CA user equipment can be scheduled preferentially; if the CA user equipment in the second user equipment of the first base station is scheduled to the first TDD cell, the user equipment in the first FDD cell still interferes with the first user equipment , the first base station may continue to schedule the CA user equipment in the second user equipment to the first TDD cell.

It should be noted that the service transmission performed by the user equipment may include data information transmission and control information transmission.

Wherein, when the second user equipment is a CA user equipment, and the second user equipment does not access the first TDD cell for service transmission, since the CA user equipment has the FDD cell access capability and the TDD cell access capability, and can User equipments that simultaneously access the FDD cell and the TDD cell at the same time, therefore, the first base station can only schedule the data information transmission of the second user equipment, that is, the first base station can transfer the data information transmission of the second user equipment to the first The FDD cell is scheduled to the first TDD cell, and the control information transmission of the second user equipment is still performed in the first FDD cell.

When the second user equipment is a CA user equipment, and the second user equipment simultaneously accesses the first TDD cell to perform service transmission, the first base station may transfer the service transmission performed by the second user equipment to the first FDD cell by the first FDD The cell is scheduled to the first TDD cell. Wherein, the service transmission performed by the second user equipment accessing the first FDD cell may only include data information transmission, and the service transmission performed by the second user equipment accessing the first FDD cell may also only include control information transmission; The service transmission into the first FDD cell may also include: data information transmission and control information transmission.

When the second user equipment is a non-CA user equipment, since the non-CA user equipment is capable of accessing FDD cells and TDD cells, and can only access any one of the FDD cell and the TDD cell at the same time Therefore, the first base station can schedule both data information transmission and control information transmission of the second user equipment from the first FDD cell to the first TDD cell.

Further, in order to reduce the interference of the user equipment in the second FDD cell in the second base station to the first base station, the method in this embodiment of the present invention may further include S204:

S204. The first base station acquires a second RB utilization rate, where the second RB utilization rate is used to represent the total RB occupancy of the first FDD cell by the third user equipment.

Wherein, the third user equipment includes: user equipment that accesses the first FDD cell to perform service transmission, and is located in an overlapping coverage area of the first FDD cell and the second FDD cell.

Exemplarily, in the FDD/TDD carrier aggregation network shown in FIG. 1 , the user equipment 3 performs service transmission for accessing the first FDD cell, and is a user within the overlapping coverage area of the first FDD cell and the second FDD cell equipment, user equipment 3 is the third user equipment in the embodiment of the present invention.

Wherein, the calculation method of the second RB utilization rate is the same as the calculation method of the third utilization rate, and the first base station may also calculate the second RB utilization rate using Formula 3 similar to Formula 2, that is, the second RB utilization rate may be:

$\mathrm{\&chi;}=\frac{\underset{k=1}{\overset{K}{\mathrm{\&Sigma;}}}\underset{i=1}{\overset{I}{\mathrm{\&Sigma;}}}{\mathrm{RB}}_{i,k}}{K\&times;{\mathrm{RB}}_{\mathrm{tot}}}$ (Formula 3)

Among them, χ is used to represent the second RB utilization rate; K is the total number of TTIs in the statistical period, K is a positive integer, K≥1; I is the number of the third user equipment, I is a positive integer, I≥1; RB _tot is used to indicate the total number of RBs available to all user equipments accessing the first FDD cell for service transmission in each TTI of the first FDD cell, and RB _{i, k} is used to indicate the ith third The total number of RBs used by the user equipment in the kth TTI in the K TTIs.

S205. If the second RB utilization rate is greater than the second utilization rate threshold, send a second interference indication to the second base station through the X2 interface between the first base station and the second base station, where the second interference indication is used to indicate the second FDD cell The user equipment generates interference to the third user equipment.

Wherein, the second utilization rate threshold is a preset fixed value, and the second utilization rate threshold can be obtained by the equipment manufacturer according to a large number of simulation experiments; the second utilization rate threshold can also be obtained by the first base station according to all third users in the first FDD cell Determined by the use of RB by the device and the service quality of the third user equipment in the first FDD cell, for example, the first base station can collect real-time statistics of the RB utilization rates of all third user equipment in the first FDD cell, and monitor the first The service quality of the third user equipment in the FDD cell; determine the second utilization rate threshold according to the statistics and monitoring results, and the second utilization rate threshold can affect the service quality of the third user equipment in the first FDD cell, the first FDD The upper limit value of the RB utilization rate of all third user equipments in the cell. This embodiment of the present invention does not specifically limit it.

Wherein, the second interference indication is the same as the first interference indication, an ICR for CA message may be added on the X2 interface between the first base station and the second base station, and the second interference indication may be carried in the request message for interference coordination in the above-mentioned carrier aggregation scenario sent in. It is also possible to add a DL ICR for CA field to LI in the original protocol of the X2 interface between the first base station and the second base station, and use this field to carry the second interference indication. This embodiment of the present invention does not limit this.

In the interference coordination scheduling method provided by the embodiment of the present invention, the first base station can assign at least one The data transmission of the second user equipment is scheduled to the first TDD cell, which can reduce the load of the first FDD cell, thereby increasing the proportion of available spectrum resources in the first FDD cell, so that the first base station can be the first FDD cell The user equipment in the first FDD cell provides more available spectrum resources, thereby reducing co-channel interference caused by the user equipment in the first FDD cell under the first base station to the first user equipment in the adjacent second FDD cell.

Further, since the CA user equipment can simultaneously access the user equipment of the FDD cell and the TDD cell at the same time, the non-CA user equipment can only access the user equipment of any one of the FDD cell or the TDD cell at the same time, and, When the first base station schedules the service transmission of the non-CA user equipment, the service transmission of the non-CA user equipment will be interrupted at the millisecond level; therefore, in the embodiment of the present invention, the first base station uses priority scheduling in the second user equipment In the way of CA user equipment, the scheduling of service transmission for the second user equipment can reduce the interruption of user services caused by the scheduling of service transmission for non-CA user equipment to a certain extent, and can improve user experience.

Example 3

An embodiment of the present invention provides a base station, wherein the first FDD cell and the second FDD cell are adjacent cells, as shown in FIG. 6 , including: a judging unit 31 and a scheduling unit 32 .

The judging unit 31 is configured to judge whether the user equipment in the first FDD cell interferes with the first user equipment, the first FDD cell is an FDD cell within the coverage of the base station, and the first user equipment includes: accessing the second FDD cell for service transmission, and the user equipment is located in the overlapping coverage area of the first FDD cell and the second FDD cell, where the second FDD cell is an FDD cell within the coverage of the second base station.

The scheduling unit 32 is configured to schedule the service transmission of at least one second user equipment from the first FDD cell to the first TDD cell if the judging unit 31 judges that the user equipment in the first FDD cell interferes with the first user equipment, The first TDD cell is a TDD cell within the coverage of the base station, and the second user equipment is a user equipment that performs service transmission by accessing the first FDD cell in the overlapping coverage area of the first FDD cell and the first TDD cell.

Further, as shown in FIG. 7 , the judging unit 31 includes: an acquiring module 311 and a first determining module 312 .

The obtaining module 311 is configured to obtain a first RB utilization rate of the first FDD cell, and the first RB utilization rate is used to represent the total RB occupancy of the first FDD cell by all user equipments in the first FDD cell.

The first determination module 312 is configured to determine that the user equipment in the first FDD cell interferes with the first user equipment if the first RB utilization rate of the first FDD cell acquired by the acquisition module 311 is greater than a first utilization rate threshold.

Further, as shown in FIG. 8 , the base station provided in this embodiment of the present invention may further include: a receiving unit 33 .

The receiving unit 33 is configured to receive the first interference indication from the second base station.

The judging unit 31 is specifically configured to determine that the user equipment in the first FDD cell generates interference to the first user equipment if the receiving unit 33 receives the first interference indication.

Wherein, the first interference indication is used to indicate that the user equipment in the first FDD cell interferes with the first user equipment, and the first interference indication is that the second base station communicates with the base station through the second base station and the base station according to the third RB utilization rate of the second FDD cell. The X2 interface between them sends to the base station.

Further, as shown in FIG. 9 or FIG. 10 , the base station 30 provided in this embodiment of the present invention may further include: an acquiring unit 34 and a sending unit 35.

The obtaining unit 34 is configured to obtain a second RB utilization rate of the first FDD cell, the second RB utilization rate is used to characterize the total RB occupancy of the first FDD cell by the third user equipment, and the third user equipment includes: The user equipment enters the first FDD cell for service transmission and is located in the overlapping coverage area of the first FDD cell and the second FDD cell.

The sending unit 35 is configured to send a second interference indication to the second base station through the X2 interface between the base station and the second base station if the second RB utilization rate acquired by the acquisition unit 34 is greater than the second utilization rate threshold, the second interference indication It is used to indicate that the user equipment in the second FDD cell generates interference to the third user equipment.

Further, as shown in FIG. 11 , FIG. 12 or FIG. 13 , the scheduling unit 32 may include: a second determining module 321 and a scheduling module 322.

The second determination module 321 is configured to determine the load balancing priority of the second user equipment when scheduling the service transmission of the second user equipment according to the attribute of the second user equipment, and the attribute of the second user equipment is used to indicate the second user equipment The CA user equipment is carrier aggregation, or the second user equipment is a non-CA user equipment, and the load balancing priority of the CA user equipment is higher than that of the non-CA user equipment.

The scheduling module 322 is configured to sequentially schedule the service transmission of the second user equipment from the first FDD cell to the first TDD cell according to the load balancing priority of the second user equipment determined by the second determination module 321 until the first base station determines The user equipment in the first FDD cell will not cause interference to the first user equipment.

Further, service transmission includes data information transmission and control information transmission.

The scheduling module 32 is specifically configured to: when the second user equipment is a CA user equipment, and the second user equipment does not access the first TDD cell for service transmission, transmit the data information of the second user equipment Scheduling by the first FDD cell to the first TDD cell, the transmission of the control information of the second user equipment is still performed in the first FDD cell; when the second user equipment is the CA user equipment, and the second user equipment When simultaneously accessing the first TDD cell for service transmission, scheduling the service transmission for the second user equipment accessing the first FDD cell to the first TDD cell by the first FDD cell; When the second user equipment is a non-CA user equipment, the first FDD cell schedules the data information transmission and the control information transmission of the second user equipment to the first TDD cell.

The base station provided by the embodiment of the present invention can schedule the data transmission of at least one second user equipment in the first FDD cell to the first TDD cell when the first FDD cell under the base station interferes with the adjacent second FDD cell, The load of the first FDD cell can be reduced, so that the proportion of available spectrum resources in the first FDD cell can be increased, so that the base station can provide more available spectrum resources for the user equipment in the first FDD cell, thereby reducing the frequency of the base station. co-channel interference caused by the user equipment in the first FDD cell below to the edge user equipment of the adjacent FDD cell.

It should be noted that, for the specific description of some functional modules in the base station device provided in the embodiment of the present invention, reference may be made to the corresponding content in the method embodiment, and details will not be repeated here in the embodiment of the present invention.

Through the description of the above embodiments, those skilled in the art can clearly understand that for the convenience and brevity of the description, only the division of the above-mentioned functional modules is used as an example for illustration. In practical applications, the above-mentioned functions can be allocated according to needs It is completed by different functional modules, that is, the internal structure of the device is divided into different functional modules to complete all or part of the functions described above. For the specific working process of the above-described system, device, and unit, reference may be made to the corresponding process in the foregoing method embodiments, and details are not repeated here.

In the several embodiments provided in this application, it should be understood that the disclosed devices and methods may be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the division of the modules or units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components can be Incorporation may either be integrated into another system, or some features may be omitted, or not implemented. In another point, the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of devices or units may be in electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or may be distributed to multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, each unit may exist separately physically, or two or more units may be integrated into one unit. The above-mentioned integrated units can be implemented in the form of hardware or in the form of software functional units.

If the integrated unit is realized in the form of a software function unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the essence of the technical solution of the present invention or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium , including several instructions to make a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor (processor) execute all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage media include: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic disk or optical disc, etc., which can store program codes. .

The above is only a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Anyone skilled in the art can easily think of changes or substitutions within the technical scope disclosed in the present invention. Should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be determined by the protection scope of the claims.

Claims (12)

1. an interference coordination dispatching method, is characterized in that, the first FDD community and the 2nd FDD community are neighbor cell, and described method comprises:

Described first base station judges whether the subscriber equipment of a described FDD community produces interference to first user equipment, a described FDD community is described first base station range Nei FDD community, described first user equipment comprises: access described 2nd FDD community and carry out business transmission, and being in the overlapping covered interior subscriber equipment of a described FDD community and described 2nd FDD community, described 2nd FDD community is the second base station range Nei FDD community;

If the subscriber equipment of a described FDD community produces interference to described first user equipment, the business of at least one the second subscriber equipment is then transmitted by described FDD cell scheduling to the first TDD cell by described first base station, described first TDD cell is the TDD cell in described first base station range, described second subscriber equipment be a described FDD community and described first TDD cell overlapping covered in, carry out business transmission by accessing a described FDD community, and possess the subscriber equipment of TDD cell access capability.

2. method according to claim 1, is characterized in that, described first base station judges whether the subscriber equipment of a described FDD community produces interference to first user equipment, comprising:

Described first base station obtains first resource block RB utilance, and a described RB utilance takies situation for characterizing all subscriber equipmenies in a described FDD community to total RB of a described FDD community;

If a described RB utilance is greater than the first utilance threshold value, then determine that the subscriber equipment of a described FDD community produces interference to described first user equipment.

3. method according to claim 1, is characterized in that, described first base station judges whether the subscriber equipment of a described FDD community produces interference to first user equipment, comprising:

If described first base station receives the first interference instruction from described second base station, described first base station then determines that the subscriber equipment of a described FDD community produces interference to described first user equipment;

Wherein, the subscriber equipment that described first interference instruction is used to indicate a described FDD community produces interference to described first user equipment, described first interference is designated as the RB utilance of described second base station according to described 2nd FDD community, is sent to described first base station by the X2 interface between described second base station and described first base station.

4. the method according to any one of claim 1-3, is characterized in that, also comprises:

Described first base station obtains the 2nd RB utilance, described 2nd RB utilance takies situation for characterizing the 3rd subscriber equipment to total RB of a described FDD community, described 3rd subscriber equipment comprises: access a described FDD community and carry out business transmission, is in the overlapping covered interior subscriber equipment of a described FDD community and described 2nd FDD community;

If described 2nd RB utilance is greater than the second utilance threshold value, then sends second to described second base station by X2 interface between described first base station and described second base station disturb and indicate, described second interference indicates the subscriber equipment being used to indicate described 2nd FDD community to disturb described 3rd subscriber equipment generation.

5. the method according to any one of claim 1-3, is characterized in that, the transmission of the business of at least one the second subscriber equipment by described FDD cell scheduling to the first TDD cell, comprises by described first base station:

Described first base station is according to the attribute of described second subscriber equipment, when determining the business transmission of execution cost second subscriber equipment, the load balancing priority of described second subscriber equipment, it is carrier aggregation CA subscriber equipment that the attribute of described second subscriber equipment is used to indicate described second subscriber equipment, or described second subscriber equipment is non-CA subscriber equipment, the load balancing priority of described CA subscriber equipment is higher than the load balancing priority of described non-CA subscriber equipment;

Described first base station is according to the load balancing priority of described second subscriber equipment, successively the business of described second subscriber equipment is transmitted by a described FDD cell scheduling to described first TDD cell, until described first base station determines that the subscriber equipment of a described FDD community can not produce interference to described first user equipment.

6. method according to claim 5, is characterized in that, described business transmission comprises data information transfer and control information transmission;

The transmission of the business of described second subscriber equipment by a described FDD cell scheduling extremely described first TDD cell, comprises by described first base station:

When described second subscriber equipment is described CA subscriber equipment, and described second subscriber equipment do not access described first TDD cell carry out business transmission time, described first base station is by the described data information transfer of described second subscriber equipment by a described FDD cell scheduling extremely described first TDD cell, and the control information transmission of described second subscriber equipment is still carried out in a described FDD community;

When described second subscriber equipment is described CA subscriber equipment, and described second subscriber equipment accesses described first TDD cell when carrying out business transmission simultaneously, the business transmission that the described second described FDD community of subscriber equipment access is carried out by described first base station by a described FDD cell scheduling to described first TDD cell;

When described second subscriber equipment is described non-CA subscriber equipment, the described data information transfer of described second subscriber equipment and described control information are transmitted by a described FDD cell scheduling to described first TDD cell by described first base station.

7. a base station, is characterized in that, the first FDD community and the 2nd FDD community are neighbor cell, and described base station comprises:

Judging unit, for judging whether the subscriber equipment of a described FDD community produces interference to first user equipment, a described FDD community is described base station range Nei FDD community, described first user equipment comprises: access described 2nd FDD community and carry out business transmission, and being in the overlapping covered interior subscriber equipment of a described FDD community and described 2nd FDD community, described 2nd FDD community is the second base station range Nei FDD community;

Scheduling unit, if judge for described judging unit, the subscriber equipment obtaining a described FDD community produces interference to described first user equipment, then the business of at least one the second subscriber equipment is transmitted by described FDD cell scheduling to the first TDD cell, described first TDD cell is the TDD cell in described base station range, described second subscriber equipment be a described FDD community and described first TDD cell overlapping covered in, carry out business transmission by accessing a described FDD community, and possess the subscriber equipment of TDD cell access capability.

8. base station according to claim 7, is characterized in that, described judging unit, comprising:

Acquisition module, for obtaining the first resource block RB utilance of a described FDD community, a described RB utilance takies situation for characterizing all subscriber equipmenies in a described FDD community to total RB of a described FDD community;

First determination module, if be greater than the first utilance threshold value for a described RB utilance of described acquisition module acquisition, then determines that the subscriber equipment of a described FDD community produces interference to described first user equipment.

9. base station according to claim 7, is characterized in that, also comprises:

Receiving element, for receiving the first interference instruction from described second base station;

Described judging unit, if receive described first interference instruction specifically for described receiving element, then determines that the subscriber equipment of a described FDD community produces interference to described first user equipment;

Wherein, the subscriber equipment that described first interference instruction is used to indicate a described FDD community produces interference to described first user equipment, described first interference is designated as the RB utilance of described second base station according to described 2nd FDD community, is sent to described base station by the X2 interface between described second base station and described base station.

10. the base station according to any one of claim 7-9, is characterized in that, also comprises:

Acquiring unit, for obtaining the 2nd RB utilance of a described FDD community, described 2nd RB utilance takies situation for characterizing the 3rd subscriber equipment to total RB of a described FDD community, described 3rd subscriber equipment comprises: access a described FDD community and carry out business transmission, is in the overlapping covered interior subscriber equipment of a described FDD community and described 2nd FDD community;

Transmitting element, if the described 2nd RB utilance obtained for described acquiring unit is greater than the second utilance threshold value, then sends second to described second base station by X2 interface between described base station and described second base station disturb and indicate, described second interference indicates the subscriber equipment being used to indicate described 2nd FDD community to disturb described 3rd subscriber equipment generation.

11. base stations according to any one of claim 7-9, it is characterized in that, described scheduling unit, comprising:

Second determination module, for the attribute according to described second subscriber equipment, when determining the business transmission of execution cost second subscriber equipment, the load balancing priority of described second subscriber equipment, it is carrier aggregation CA subscriber equipment that the attribute of described second subscriber equipment is used to indicate described second subscriber equipment, or described second subscriber equipment is non-CA subscriber equipment, the load balancing priority of described CA subscriber equipment is higher than the load balancing priority of described non-CA subscriber equipment;

Scheduler module, for the load balancing priority of described second subscriber equipment determined according to described second determination module, successively the business of described second subscriber equipment is transmitted by a described FDD cell scheduling to described first TDD cell, until described first base station determines that the subscriber equipment of a described FDD community can not produce interference to described first user equipment.

12. base stations according to claim 7, is characterized in that, described business transmission comprises data information transfer and control information transmission;

Described scheduler module, specifically for:

When described second subscriber equipment is described CA subscriber equipment, and described second subscriber equipment do not access described first TDD cell carry out business transmission time, by the described data information transfer of described second subscriber equipment by a described FDD cell scheduling extremely described first TDD cell, the control information transmission of described second subscriber equipment is still carried out in a described FDD community;

When described second subscriber equipment is described CA subscriber equipment, and described second subscriber equipment accesses described first TDD cell when carrying out business transmission simultaneously, the business transmission that the described second described FDD community of subscriber equipment access is carried out by a described FDD cell scheduling to described first TDD cell;

When described second subscriber equipment is described non-CA subscriber equipment, the described data information transfer of described second subscriber equipment and described control information are transmitted by a described FDD cell scheduling to described first TDD cell.