WO2017088506A1

WO2017088506A1 - Inter-macro/micro cell interference coordination method and device, base station and communication system

Info

Publication number: WO2017088506A1
Application number: PCT/CN2016/091747
Authority: WO
Inventors: 汪辉; 徐新军; 李辉
Original assignee: 中兴通讯股份有限公司
Priority date: 2015-11-26
Filing date: 2016-07-26
Publication date: 2017-06-01
Also published as: CN106803779A

Abstract

An inter-macro/micro cell interference coordination (eICIC) method and device, a base station and a communication system. The method comprises: acquiring a position attribute of a terminal accessing a macro cell, and updating a terminal type of the terminal according to the position attribute; and according to an interference coordination strategy corresponding to the terminal type, scheduling a data service of the terminal. In the embodiments of the present invention, a position attribute of a terminal (UE) of a macro cell is acquired to determine whether the terminal belongs to a centre terminal or an edge terminal, thereby achieving the differential scheduling of a data service and improving the throughput of the data service.

Description

Macro micro-interval interference coordination method and device, base station, communication system

Technical field

This document relates to but not limited to the field of communications, and in particular, to a macro and small interval interference coordination method and device, a base station, and a communication system.

Background technique

The cellular networking technology in the related art focuses on outdoor and coverage, and has limited capacity. With the trend of doubling the annual growth of data traffic, wireless channel technology alone and limited bandwidth are not enough. According to current trends, especially in urban environments, most of the traffic demand is concentrated indoors or in hotspots. Limited by bandwidth limitations, macro stations in such scenarios may not be able to meet the traffic requirements. Therefore, operators will be more dependent on meeting the needs of users through new network architectures.

A heterogeneous network (HetNet, heterogeneous network) consisting of cells of different sizes and types, including: macro cell, micro cell, pico cell It is the main way to cope with the steep increase in data traffic in the future and meet the demand for capacity growth. In the macro cellular network layer, the operator forms a low-power node layer by amplifying a low-power micro-cell, a pico-cell, and other non-standard hexagonal cellular access points, and has a large amount of reused system existing spectrum resources, and is targeted. The site is deployed on demand and accessed nearby to meet the capacity needs of hotspots.

In the scope of the 3rd Generation Partnership Project (3Gpp, 3rd Generation Partnership Project), the heterogeneous network is a variety of networking modes of wireless access technologies. The networking modes include: Low Power Node (LPN). It is placed in the coverage of the macro base station to form a heterogeneous system of different node types covered by the same. Due to the introduction of many LPNs, the interference problem becomes prominent, and corresponding technologies are needed to solve the interference problem.

At present, the best method for avoiding and controlling interference includes completely different frequency. In the case of completely different frequency, the macro base station and the LPN in the coverage are similar to the hierarchical network. At this time, there is basically no interference, and the shortcoming of the completely different frequency mode interferes. Small, but the reduction in spectrum utilization limits the increase in system capacity. In the case of non-complete inter-frequency interference, the macro-micro is a kind of network through enhanced inter-cell interference coordination (eICIC) technology. The form, called HetNet, is based on the coverage of the macro station, and the micro station is used for blinding and replenishing heat. Inter-cell interference, eICIC configures the time domain ICIC technology of almost blank subframe ABS (Almost Blank Subframe). ABS only contains some necessary signals, and the power is very low; eICIC configures ABS subframes, macro stations vacate these subframes without scheduling data services, and micro-station uses ABS subframes for data scheduling, which is compared in microcells. Users with strong interference provide services, thus achieving coordination of inter-cell interference. In practical applications, the maximum proportion of ABS subframes is 60%. According to the eICIC processing flow, the macro area is scheduled according to the ABS bitmap constraint, and the normal scheduling is performed on the non-ABS subframe. In addition to some necessary public information on the ABS subframe. It is known that the macro station does not distinguish between the central terminal and the edge terminal of the access terminal, and all users vacate the ABS subframe; in fact, only the macro station edge terminal has relatively large uplink interference to the micro-site cell edge terminal, if It is stipulated that all terminals of the macro station only use non-ABS subframes for uplink scheduling, which will bring unnecessary uplink traffic drop to the macro station central terminal which has little influence on the neighboring area of the micro station.

Therefore, how to solve the problem that the eICIC brings unnecessary uplink (data traffic) traffic to the macro station central terminal in the related art is a technical problem to be solved by those skilled in the art.

Summary of the invention

The following is an overview of the topics detailed in this document. This Summary is not intended to limit the scope of the claims.

The embodiment of the invention provides a macro micro eICIC method and device, a base station and a communication system, which can avoid the decrease of the uplink traffic of the central terminal.

Embodiments of the present invention provide a macro micro eICIC method, including:

Obtaining a location attribute of a terminal that accesses the macro station cell, and updating a terminal type of the terminal according to the location attribute;

Determining a corresponding interference coordination policy according to the updated terminal type, and scheduling the data service of the terminal according to the determined interference coordination policy corresponding to the terminal type.

Optionally, the macro micro-interval interference coordination method further includes: before acquiring the location attribute of the terminal accessing the macro station cell, before acquiring the location attribute of the terminal accessing the macro station cell,

The terminal type of the terminal accessing the macro station cell is set as the macro station cell edge terminal.

Optionally, the macro micro-interval interference coordination method further includes: at the end of accessing the macro station cell After the terminal type of the terminal is set as the macro station cell edge terminal, before the acquiring the location attribute of the terminal accessing the macro station cell,

Transmitting, to the terminal, an inter-cell interference coordination measurement message for determining a location attribute;

If the inter-cell interference coordination measurement report sent by the terminal after receiving the inter-cell interference coordination measurement message is not received within a predetermined time, the terminal type adjustment of the terminal is set as a macro station cell center terminal; After receiving the inter-cell interference coordination measurement report sent by the terminal after receiving the inter-cell interference coordination measurement message, the terminal acquires the location attribute of the terminal.

Optionally, the macro-cell interference coordination method further includes: after receiving the inter-cell interference coordination measurement report sent by the terminal after receiving the inter-cell interference coordination measurement message, the acquiring the terminal Before the location attribute,

Determining whether the neighboring cell list in the inter-cell interference coordination measurement report is a known micro-station neighboring zone configured in the background, and if it is not a known micro-station neighboring zone configured in the background, setting the terminal type adjustment of the terminal to The macro station cell center terminal obtains the location attribute of the terminal if it is a known micro station neighboring area configured in the background.

Optionally, the location attribute includes: a reference signal received power difference between the macro station and the micro station;

And obtaining the location attribute of the terminal that accesses the macro station cell, and updating the terminal type of the terminal according to the location attribute, including:

Receiving, by the terminal, an inter-cell interference coordination measurement report, according to whether the reference signal received power difference between the macro station and the micro station in the inter-cell interference coordination measurement report is greater than a preset threshold, if the reference signal is received If the power difference is greater than the preset threshold, the terminal type of the terminal is set as a macro station cell center terminal, and if the reference signal received power difference is less than the preset threshold, the The terminal type of the terminal is set to the macro station cell edge terminal.

Optionally, the terminal type includes a macro station cell center terminal and a macro station cell edge terminal; and the scheduling the data service of the terminal includes:

When the terminal type is the macro station cell center terminal, all the subframes are used to schedule data services of the terminal;

When the terminal type is the macro station cell edge terminal, the data service of the terminal is scheduled only by using a non-almost blank subframe.

Embodiments of the present invention provide a macro-micro eICIC device, including:

An acquiring module, configured to acquire a location attribute of a terminal that accesses a macro station cell, and update a terminal type of the terminal according to the location attribute;

The scheduling module is configured to determine a corresponding interference coordination policy according to the updated terminal type, and schedule the data service of the terminal according to the determined interference coordination policy corresponding to the terminal type.

Optionally, the acquiring module is further configured to: before acquiring the location attribute of the terminal that accesses the macro station cell, set the terminal type of the terminal that accesses the macro station cell to the macro station cell edge terminal.

Optionally, the acquiring module is further configured to: after the terminal type of the terminal that accesses the macro station cell is set as the macro station cell edge terminal, before acquiring the location attribute of the terminal that accesses the macro station cell, The terminal sends an inter-cell interference coordination measurement message for determining a location attribute, and if the inter-cell interference coordination measurement report sent by the terminal after receiving the inter-cell interference coordination measurement message is not received within a predetermined time, the terminal The terminal type adjustment of the terminal is set to be a macro station cell center terminal, and if the inter-cell interference coordination measurement report sent by the terminal after receiving the inter-cell interference coordination measurement message is received within a predetermined time, the location attribute of the terminal is performed. Obtain.

Optionally, the acquiring module is further configured to: after receiving the inter-cell interference coordination measurement report that is sent by the terminal after receiving the inter-cell interference coordination measurement message, the acquiring the location attribute of the terminal Before determining whether the neighboring cell list in the inter-cell interference coordination measurement report is a known micro-station neighboring zone configured in the background, if it is not a known micro-station neighboring zone configured in the background, adjusting the terminal type of the terminal It is set as a macro station cell center terminal, and if it is a known micro station neighboring area configured in the background, the location attribute of the terminal is acquired.

The acquiring module is configured to receive an inter-cell interference coordination measurement report sent by the terminal, according to whether a reference signal received power difference between the macro station and the micro station in the inter-cell interference coordination measurement report is greater than a preset threshold a value, if the reference signal received power difference is greater than the preset threshold, setting a terminal type of the terminal to a macro station cell center terminal, if the reference signal received power difference is less than the preset For the threshold value, the terminal type of the terminal is set as a macro station cell edge terminal.

Optionally, the terminal type includes a macro station cell center terminal and a macro station cell edge terminal; The scheduling module is set to:

When the terminal type is the macro station cell center terminal, all the subframes are used to schedule data services of the terminal; when the terminal type is the macro station cell edge terminal, only non-almost blank subframe pairs are used. The data service of the terminal is scheduled.

The embodiment of the invention provides a base station, which comprises the macro micro eICIC device provided by the invention.

Embodiments of the present invention provide a communication system including a base station provided by the present invention.

Compared with the related art, the technical solution provided by the embodiment of the present invention includes: acquiring a location attribute of a terminal that accesses a macro station cell, and updating a terminal type of the terminal according to the location attribute; the terminal type includes a macro station cell center terminal or a macro station cell. The edge coordination terminal, the interference coordination strategy corresponding to the macro station cell center terminal includes scheduling the data service of the terminal by using all the subframes, and the interference coordination strategy corresponding to the macro cell cell edge terminal includes using only the non-almost blank subframe to perform the data service of the terminal. Scheduling; scheduling the data service of the terminal according to the interference coordination policy corresponding to the terminal type. According to the embodiment of the present invention, the location attribute of the macro station cell UE is obtained, thereby determining whether the terminal belongs to the central terminal or the edge terminal, so as to implement the uplink differentiated scheduling method of the data service, and improve the uplink scheduling times of the macro area center UE. The effect of improving the throughput of the uplink data service of the central UE is achieved. The embodiment of the present invention is directed to the problem that the uplink scheduling of the central terminal of the macro station in the traditional eICIC is insufficient, and determining the location attribute of the macro station cell terminal based on the measurement, thereby determining whether the terminal belongs to the central terminal or the edge terminal, so as to implement the uplink differentiated scheduling method. Compared with the related technology, the method of the embodiment of the present invention improves the uplink scheduling times of the central terminal of the macro area, and achieves the effect of improving the uplink throughput of the central terminal.

Other aspects will be apparent upon reading and understanding the drawings and detailed description.

BRIEF abstract

1 is a schematic structural diagram of a macro-micro eICIC device according to a first embodiment of the present invention;

2 is a flowchart of a macro micro eICIC method according to a second embodiment of the present invention;

FIG. 3 is a flowchart of a macro micro eICIC method according to a third embodiment of the present invention.

Embodiments of the invention

Embodiments of the present application will be described in detail below with reference to the accompanying drawings. It should be noted that In the case of no conflict, the embodiments in the present application and the features in the embodiments may be arbitrarily combined with each other.

First embodiment:

1 is a schematic structural diagram of a macro-micro eICIC device according to a first embodiment of the present invention. As shown in FIG. 1 , in the embodiment, the macro-micro eICIC device provided by the embodiment of the present invention includes:

The obtaining module 11 is configured to acquire a location attribute of a terminal that accesses a macro station cell, and update a terminal type of the terminal according to the location attribute; the terminal type may include a CCU (Cell Center UE, a macro station cell center terminal) and a CEU (Cell Edge UE, Macro station cell edge terminal);

The scheduling module 12 is configured to determine a corresponding interference coordination policy according to the updated terminal type, and schedule the data service of the terminal according to the determined interference coordination policy corresponding to the terminal type.

In an alternative embodiment, the scheduling module is set to:

When the terminal type is the macro station cell center terminal, all the subframes are used to schedule the data service of the terminal; when the terminal type is the macro station cell edge terminal, only the non-almost blank subframe is used to schedule the data service of the terminal.

It should be noted that, in the embodiment of the present invention, the corresponding interference coordination policy may be determined by using a related technology according to the terminal type.

In an optional embodiment, the obtaining module 11 in the foregoing embodiment is further configured to: before acquiring the location attribute of the terminal accessing the macro station cell, set the terminal type of the terminal accessing the macro station cell to the macro station cell edge. In the embodiment of the present invention, after being configured as a macro cell cell edge terminal, the scheduling module 12 may use the interference coordination policy corresponding to the macro cell cell edge terminal to schedule the data service of the terminal.

In an optional embodiment, the acquiring module 11 in the foregoing embodiment is further configured to: after setting the terminal type of the terminal accessing the macro station cell to the macro station cell edge terminal, acquiring the location of the terminal accessing the macro station cell Before the attribute, the eICIC measurement message for determining the location attribute is sent to the terminal, and if the eICIC measurement report sent by the terminal after receiving the inter-cell interference coordination measurement message is not received within the predetermined time, the terminal type adjustment of the terminal is set to a macro. The station cell center terminal obtains the location attribute of the terminal if the eICIC measurement report sent by the terminal after receiving the inter-cell interference coordination measurement message is received within a predetermined time.

It should be noted that the terminal type of the terminal accessing the macro station cell is set as the macro station cell edge. The time information of the terminal may be confirmed by a corresponding notification message or a system message. Before obtaining the location attribute of the terminal accessing the macro station cell, the corresponding notification message or system message may be set and confirmed by using a conventional technical means of a person skilled in the art. In the same way, other time information can also be realized by the conventional technology in the related art, and will not be described here.

In an optional embodiment, the obtaining module 11 in the foregoing embodiment is further configured to: before receiving the eICIC measurement report sent by the terminal after receiving the inter-cell interference coordination measurement message, within a predetermined time, before acquiring the location attribute of the terminal, Determining whether the neighboring cell list in the eICIC measurement report is a known micro-station neighboring zone configured in the background, and if it is not a known micro-station neighboring zone configured in the background, setting the terminal type adjustment of the terminal to the macro-cell cell central terminal, if The neighboring area of the known micro-station configured in the background performs the acquisition of the location attribute of the terminal.

In an optional embodiment, the location attribute includes: a reference signal received power difference between the macro station and the micro station;

The obtaining module 11 in the foregoing embodiment is configured to receive an eICIC measurement report sent by the terminal, and according to the reference signal received by the macro station and the micro station in the eICIC measurement report, whether the received power difference is greater than a preset threshold, if the reference signal is received. If the power difference is greater than the preset threshold, the terminal type of the terminal is set to the macro station cell center terminal. If the reference signal received power difference is less than the preset threshold, the terminal type of the terminal is set to the macro station cell edge. terminal.

It should be noted that the preset threshold may be a value in the range of 2 decibels (dBm) to 10 decibels (dBm), for example, 3 decibels (dBm), which can be adjusted according to actual application scenarios.

The embodiment of the present invention provides a base station, which includes the macro micro eICIC device 1 provided by the embodiment of the present invention.

The embodiment of the invention provides a communication system, which includes a base station provided by an embodiment of the present invention.

Second embodiment:

FIG. 2 is a flowchart of a macro-eICICIC method according to a second embodiment of the present invention. As shown in FIG. 2, in the embodiment, the macro-eICICIC method provided by the embodiment of the present invention includes the following steps:

Step (S, Step) 201: Obtain a location attribute of a terminal that accesses a macro station cell, and update a terminal type of the terminal according to the location attribute;

S202: Determine a corresponding interference coordination policy according to the updated terminal type, and schedule the data service of the terminal according to the determined interference coordination policy corresponding to the terminal type.

In an optional embodiment, before obtaining the location attribute of the terminal accessing the macro station cell, the method in the foregoing embodiment further includes: setting a terminal type of the terminal accessing the macro station cell as a macro station cell edge terminal.

In an optional embodiment, the macro micro-interval interference coordination method in the foregoing embodiment acquires the location attribute of the terminal accessing the macro station cell after setting the terminal type of the terminal accessing the macro station cell to the macro station cell edge terminal. The method further includes: sending an eICIC measurement message for determining a location attribute to the terminal, and if the eICIC measurement report sent by the terminal after receiving the inter-cell interference coordination measurement message is not received within a predetermined time, the terminal type adjustment setting of the terminal is performed. For the macro station cell center terminal, if the eICIC measurement report sent by the terminal after receiving the inter-cell interference coordination measurement message is received within a predetermined time, the location attribute of the terminal is acquired.

In an optional embodiment, if the macro-cell interference coordination method in the foregoing embodiment receives the eICIC measurement report sent by the terminal within a predetermined time, before acquiring the location attribute of the terminal, the method further includes: determining the neighbor in the eICIC measurement report. Whether the zone list is a known micro-station neighboring zone configured in the background. If it is not a known micro-station neighboring zone configured in the background, the terminal type adjustment of the terminal is set to the macro-cell cell-centric terminal, and if it is a known micro-station configured in the background In the neighboring area, the location attribute of the terminal is acquired.

In an optional embodiment, the acquiring the location attribute of the terminal accessing the macro station cell in the foregoing embodiment, and updating the terminal type of the terminal according to the location attribute, including: receiving the eICIC measurement report sent by the terminal, according to the macro station in the eICIC measurement report Whether the reference signal received power difference with the micro station is greater than a preset threshold. If the reference signal received power difference is greater than the preset threshold, the terminal type of the terminal is set to the macro station cell center terminal, if the reference signal is received. If the power difference is less than the preset threshold, the terminal type of the terminal is set as the macro station cell edge terminal.

It should be noted that, before the terminal type of the terminal is updated according to the location attribute, the setting or adjustment of the terminal type is performed. Therefore, the embodiment of the present invention uses the update to describe, in the process of the location attribute change (user movement), the terminal type Adjust according to the location attribute.

It should be noted that the embodiment of the present invention may be implemented by the base station as an execution entity, or may be connected to the base station as an independent device to implement the embodiment of the present invention;

The embodiment of the invention further provides a computer storage medium, wherein the computer storage medium stores computer executable instructions, and the computer executable instructions are used to execute the macro micro eICIC method.

The embodiments of the present invention will be described in conjunction with application scenarios.

Third embodiment:

In this embodiment, an FDD (Freq terminal ncy Division Duplexing) system is taken as an example for description.

The processing flow of the eICIC based on the ABS subframe in the related art is: 1. The macro area is configured with an ABS bitmap, the macro area medium access control layer (MAC) is notified through the interface, and the micro area is notified; 2. The macro area is based on the ABS bitmap. Constrained scheduling, normal scheduling is performed on non-ABS subframes, and data services are not scheduled on the ABS subframe except for some necessary public information. 3. The RRC (Radio Resource Control) divides the user attribute according to the measurement result, and constrains the scheduling according to the ABS bitmap received from the macro area, and the edge user with strong interference with the macro area only on the ABS subframe. Scheduling. 4. The micro-area feedback ABS resource status report is sent to the macro area, including the ABS bitmap actually used by the micro-area and the resource utilization rate of the ABS sub-frame. 5. The macro area performs dynamic adjustment of ABS according to the feedback information of the micro area.

For FDD, the ABS starts counting from the 0th subframe of the system frame number (SFN, System Frame Number)=0. The ABS configuration is repeated in a period of 40 milliseconds (ms). Table 1 below is the pattern index table Pattern Index of the ABS of the FDD.

Table 1

The configuration table converted to the uplink ABS mode according to the downlink ABS mode configuration (downlink ABS subframe plus 4 subframes) is as shown in Table 2 below:

Table 2

It can be seen from Tables 1 and 2 that the maximum proportion of ABS sub-frames is 60% (ABS Pattern Index=21), according to the eICIC processing flow: “The macro area is scheduled according to the ABS bitmap constraint, and the normal scheduling is performed on non-ABS subframes. In addition to some necessary common information on the ABS subframe, the data service is not scheduled. The macro station does not distinguish between the central terminal and the edge terminal, and all users vacate the ABS subframe. In fact, only the macro station edge terminal has relatively large uplink interference to the micro-site cell edge terminal. If all terminals of the macro station are specified to use only non-ABS subframes for uplink scheduling, unnecessary macro traffic drop will be caused to the macro station central terminal having little influence on the neighboring area of the micro station. The method of reading the contents contained in Tables 1 and 2 is a common knowledge of those skilled in the art.

Aiming at the problem that the uplink scheduling of the central terminal of the macro station in the traditional eICIC is insufficient, this embodiment proposes a method for determining the location attribute of the macro station cell terminal based on the measurement, thereby implementing the uplink differentiated scheduling. The embodiment solves the problem that the uplink scheduling of the central terminal of the macro station cell in the traditional eICIC is insufficient, and uses a method for determining the location attribute of the macro station cell terminal based on the event measurement, thereby implementing the uplink differentiated scheduling method, and realizing the macro area terminal. Differentiate between the CEU and the CCU, and perform full-slot scheduling on the CCU to improve the uplink throughput of the CCU terminal.

The technical problem to be solved by the present invention is: for the problem that the uplink scheduling of the central terminal of the macro station in the traditional eICIC is insufficient, the embodiment of the present invention provides a macro-electronic eICIC method, which determines the location attribute of the macro station cell terminal based on the measurement, and implements the uplink. Differentiated scheduling method.

As shown in FIG. 3, the macro micro eICIC method provided in this embodiment includes the following steps:

S301: After the terminal accesses the macro station cell, the macro station eNB (evolved Node B) initializes the terminal as a CEU, and sends an eICIC measurement for determining the location attribute to the terminal in the reconfiguration message, and starts to wait for the terminal to report. eICIC measurement report timer; at this time in order to avoid interference;

S302, the measurement report timer expires, the terminal does not receive the eICIC measurement report, step 3030 is performed; if the eICIC measurement report is received before the timer expires, the timer is ignored, and step 3040 is performed;

S3030: Set the terminal type to CCU;

S3040: After receiving the eICIC measurement report reported by the terminal, the macro station eNB determines whether the neighbor list of the measurement report is a known micro station neighboring area configured in the background, and if it is a known micro station neighboring area configured in the background, the step is performed. 30410: Set a terminal type according to the measurement result; if it is not a known micro-station neighboring area configured in the background, step 30420 is performed.

S30410: The macro station eNB determines, according to the measurement result, whether the difference between the macro station and the micro station RSRP (Reference Signal Receiving Power) is greater than a preset threshold; for example, 3 decibels (dBm), to determine whether it is an edge terminal. (ie, there is interference), if the reference signal received power difference is greater than the preset threshold, step 30411; if the reference signal received power difference is less than the preset threshold, step 30412;

S30411: Record the terminal type as a macro station cell center terminal;

S30412: Record the terminal type as a macro station cell edge terminal.

On this basis, the macro station cell implements uplink differentiated scheduling according to the location attribute of the terminal. When it is determined that the terminal belongs to the edge terminal (CEU), the uplink scheduling for the terminal is consistent with the traditional eICIC, that is, the scheduling of the uplink data service is performed only in the non-ABS subframe; when it is determined that the terminal belongs to the central terminal, it is directed to the terminal. The scheduling of uplink data services is performed on all 10 subframes.

In practical applications, the method can include:

The first step: the uplink scheduling of the terminal is based on the terminal attribute (CCU/CEU), and the terminal attribute is determined by the defined eICIC measurement result. The eICIC measurement is defined using the A3 event. The trigger condition of the A3 event can be referred to the protocol 36.331.

Step 2: After the terminal accesses the serving cell, the eNB initializes the terminal as CEU. When the eICIC switch is turned on and the serving cell includes the same-frequency neighboring cell of the micro-station, after the terminal accesses or cuts in, the eNB re-matches the radio resource control connection. In the RRC CONNECTION RECONFIGURATION message, the eICIC measurement configuration is sent to the terminal, and the terminal attribute conversion is performed according to the measurement result. In order to avoid the terminal attribute ping-pong, the parameter hysteresis is used to solve the problem.

The third step is: when the terminal belongs to the CEU, the CEU attribute is reported to the uplink scheduling module, and the scheduling of the terminal is consistent with the traditional eICIC, that is, the scheduling of the uplink data service is performed only in the non-ABS subframe; When it belongs to the CCU, the CCU attribute is reported to the uplink scheduling module. The uplink data service is scheduled for all ten subframes of the terminal.

Step 4: When the terminal switches to another cell, the measurement is deleted first, and then the target cell determines whether it needs to deliver a new eICIC measurement according to its configuration. When the terminal returns to the Idle state, the terminal will automatically delete the measurement.

In summary, through the implementation of the embodiments of the present invention, the following beneficial effects exist:

The embodiment of the present invention provides a macro-micro eICIC method, which is directed to determining a location attribute of a macro-cell terminal based on measurement in the eICIC in the eICIC that the uplink terminal of the macro-cell terminal is insufficiently scheduled, thereby determining that the terminal belongs to the center. The method of the embodiment of the present invention is used to improve the uplink scheduling times of the central terminal of the macro area, and the effect of improving the uplink throughput of the central terminal is achieved by using the method of the embodiment of the present invention.

One of ordinary skill in the art will appreciate that all or a portion of the above steps may be performed by a program to instruct related hardware, such as a processor, which may be stored in a computer readable storage medium, such as a read only memory, disk or optical disk. Wait. Alternatively, all or part of the steps of the above embodiments may also be implemented using one or more integrated circuits. Correspondingly, each module/unit in the foregoing embodiment may be implemented in the form of hardware, for example, by implementing an integrated circuit to implement its corresponding function, or may be implemented in the form of a software function module, for example, being executed by a processor and stored in a memory. Programs/instructions to implement their respective functions. The invention is not limited to any specific form of combination of hardware and software.

The embodiments disclosed in the present application are as described above, but the descriptions are only for the purpose of understanding the present application, and are not intended to limit the present application, such as the specific implementation method in the embodiments of the present invention. Any modifications and changes in the form and details of the embodiments may be made by those skilled in the art without departing from the spirit and scope of the disclosure. The scope defined by the appended claims shall prevail.

Industrial applicability

The above technical solution realizes differentiated scheduling of data services and improves the throughput of data services.

Claims

A macro-small interval interference coordination method includes:

Obtaining a location attribute of a terminal that accesses the macro station cell, and updating a terminal type of the terminal according to the location attribute;

Determining a corresponding interference coordination policy according to the updated terminal type, and scheduling the data service of the terminal according to the determined interference coordination policy corresponding to the terminal type.
The macro-cell interference coordination method according to claim 1, wherein the macro-cell interference coordination method further comprises: before acquiring a location attribute of a terminal accessing the macro station cell,

The terminal type of the terminal accessing the macro station cell is set as the macro station cell edge terminal.
The macro-cell interference coordination method according to claim 2, wherein the macro-cell interference coordination method further comprises: after setting the terminal type of the terminal accessing the macro station cell to a macro station cell edge terminal, Before obtaining the location attribute of the terminal accessing the macro station cell,

Transmitting, to the terminal, an inter-cell interference coordination measurement message for determining a location attribute;

If the inter-cell interference coordination measurement report sent by the terminal after receiving the inter-cell interference coordination measurement message is not received within a predetermined time, the terminal type adjustment of the terminal is set as a macro station cell center terminal; After receiving the inter-cell interference coordination measurement report sent by the terminal after receiving the inter-cell interference coordination measurement message, the terminal acquires the location attribute of the terminal.
The macro-cell interference coordination method according to claim 3, wherein the macro-cell interference coordination method further comprises: receiving inter-cell interference coordination sent by the terminal after receiving the inter-cell interference coordination measurement message in the predetermined time After the measurement report, before obtaining the location attribute of the terminal,

Determining whether the neighboring cell list in the inter-cell interference coordination measurement report is a known micro-station neighboring zone configured in the background, and if it is not a known micro-station neighboring zone configured in the background, setting the terminal type adjustment of the terminal to The macro station cell center terminal obtains the location attribute of the terminal if it is a known micro station neighboring area configured in the background.
The macro-cell interference coordination method according to any one of claims 1 to 4, wherein the location attribute comprises: a reference signal received power difference between the macro station and the micro station;

And obtaining the location attribute of the terminal that accesses the macro station cell, and updating the terminal type of the terminal according to the location attribute, including:

Receiving, by the terminal, an inter-cell interference coordination measurement report, according to whether the reference signal received power difference between the macro station and the micro station in the inter-cell interference coordination measurement report is greater than a preset threshold, if the reference signal is received If the power difference is greater than the preset threshold, the terminal type of the terminal is set as a macro station cell center terminal, and if the reference signal received power difference is less than the preset threshold, the The terminal type of the terminal is set to the macro station cell edge terminal.
The macro-cell interference coordination method according to any one of claims 1 to 4, wherein

The terminal type includes a macro station cell center terminal and a macro station cell edge terminal; and the scheduling of the data service of the terminal includes:

When the terminal type is the macro station cell center terminal, all the subframes are used to schedule data services of the terminal;

When the terminal type is the macro station cell edge terminal, the data service of the terminal is scheduled only by using a non-almost blank subframe.
A macro-small interval interference coordination device includes:

An acquiring module, configured to acquire a location attribute of a terminal that accesses a macro station cell, and update a terminal type of the terminal according to the location attribute;

The scheduling module is configured to determine a corresponding interference coordination policy according to the updated terminal type, and schedule the data service of the terminal according to the determined interference coordination policy corresponding to the terminal type.
The macro-cell interference coordination apparatus according to claim 7, wherein the obtaining module is further configured to set a terminal type of the terminal accessing the macro station cell to a macro before acquiring the location attribute of the terminal accessing the macro station cell. Station cell edge terminal.
The macro micro-interval interference coordination apparatus according to claim 8, wherein the obtaining module is further configured to: after the terminal type of the terminal accessing the macro station cell is set as a macro station cell edge terminal, the acquiring access macro Before the location attribute of the terminal of the station cell, the inter-cell interference coordination measurement message for determining the location attribute is sent to the terminal, and the cell sent after the terminal receives the inter-cell interference coordination measurement message is not received within a predetermined time. Inter-interference coordination measurement report, the terminal type adjustment of the terminal is set as a macro station cell center terminal, if the terminal is received within a predetermined time After receiving the inter-cell interference coordination measurement report sent by the inter-cell interference coordination measurement message, the terminal acquires the location attribute of the terminal.
The macro-cell interference coordination apparatus according to claim 9, wherein the acquiring module is further configured to: after receiving the inter-cell interference coordination measurement report sent by the terminal after receiving the inter-cell interference coordination measurement message within a predetermined time, Before obtaining the location attribute of the terminal, determining whether the neighboring cell list in the inter-cell interference coordination measurement report is a known micro-station neighboring zone configured in the background, if not a known micro-station neighboring zone configured in the background Then, the terminal type adjustment of the terminal is set as a macro station cell center terminal, and if the known micro station neighboring area is configured in the background, the location attribute of the terminal is acquired.
The macro-cell interference coordination device according to any one of claims 7 to 10, wherein

The location attribute includes: a reference signal received power difference between the macro station and the micro station;

The acquiring module is configured to receive an inter-cell interference coordination measurement report sent by the terminal, according to whether a reference signal received power difference between the macro station and the micro station in the inter-cell interference coordination measurement report is greater than a preset threshold a value, if the reference signal received power difference is greater than the preset threshold, setting a terminal type of the terminal to a macro station cell center terminal, if the reference signal received power difference is less than the preset For the threshold value, the terminal type of the terminal is set as a macro station cell edge terminal.
The macro-cell interference coordination device according to any one of claims 7 to 10, wherein

The terminal type includes a macro station cell center terminal and a macro station cell edge terminal; the scheduling module is set to:

When the terminal type is the macro station cell center terminal, all the subframes are used to schedule data services of the terminal; when the terminal type is the macro station cell edge terminal, only non-almost blank subframe pairs are used. The data service of the terminal is scheduled.
A base station comprising the macro-cell interference coordination apparatus according to any one of claims 7 to 12.
A communication system comprising the base station of claim 13.