WO2014153750A1

WO2014153750A1 - Method and base station for coordinating co-channel interference between inter-system cells

Info

Publication number: WO2014153750A1
Application number: PCT/CN2013/073332
Authority: WO
Inventors: 夏海涛; 高永强; 邵家枫; 杨晓东
Original assignee: 华为技术有限公司
Priority date: 2013-03-28
Filing date: 2013-03-28
Publication date: 2014-10-02
Also published as: CN104982086B; CN104982086A

Abstract

Embodiments of the present invention provide a method and a base station for coordinating a co-channel interference between inter-system cells. The method comprises: a target cell in a second communications system sharing a spectrum resource of a first cell in a first communications system, and a base station serving the target cell obtaining power information of an uplink interference caused to the target cell by a cell edge user scheduled on a spectrum resource unit in a second cell, the second cell being a cell adjacent to the first cell in the first communications system and using a spectrum resource that is the same as the spectrum resource used by the first cell; and the base station serving the target cell using the power information of the uplink interference as a contribution of the second cell to receiver noise floor of the target cell, and performing noise floor rising on the target cell. The technical solution in the present invention solves a problem of a co-channel interference between inter-system cells.

Description

Method and base station for co-channel interference coordination between different systems

Technical field

The present invention relates to communication technologies, and in particular, to a method and a base station for co-channel interference coordination between different systems. Background technique

With the continuous development of wireless communication technologies, the network deployment in the same geographical area will be a complex heterogeneous network, for example, a network of multiple operators, a network of Radio Access Technology (RAT), A network of various base station forms and coexistence or superposition of the aforementioned various networks. In the face of the problem of improving the spectrum efficiency in a heterogeneous network, the prior art provides a flexible spectrum usage (FSU) technology, also known as Dynamic Spectrum Sharing (DSS) technology. In the heterogeneous network where two or more communication systems are deployed, the spectrum resources in the heterogeneous network are dynamically allocated and used among different communication systems according to a certain rule, thereby achieving spectrum resources. Technology that maximizes efficiency.

Among them, in a heterogeneous network composed of a Long Term Evolution (LTE) communication system and a Universal Mobile Telecommunications System (UMTS) deployed by a single carrier, one improves spectrum utilization. The FSU method can share part of the spectrum resources of the LTE communication system during off-peak period as shared spectrum resources to the UMTS during peak load period, when the LTE communication system returns to the peak load period, or when the UMTS returns When the load is off peak, the shared spectrum resource will be reclaimed by the LTE communication system. If at least two adjacent LTE cells are deployed in the same frequency in the LTE communication system, there is co-channel interference between the two LTE cells, and when the spectrum of one of the LTE cells is shared to the UMTS cell, take over The UMTS cell of the spectrum forms an intra-frequency deployment with another adjacent LTE cell, and the co-channel interference between adjacent cells in the original LTE communication system becomes the same-frequency interference between the different system cells, thus solving the difference The problem of co-channel interference between system cells becomes a prerequisite for using this FSU method. At present, the prior art only provides a solution for co-channel interference between adjacent cells in the same RAT system, but there is no solution for co-channel interference between different system cells. The solution to the problem, and the solution for co-channel interference between adjacent cells in the same system cannot be directly used to solve the problem of co-channel interference between different system cells. Therefore, it is urgent to provide a solution for solving different systems. Co-channel interference between different system cells in a small interval dynamic spectrum sharing scenario. SUMMARY OF THE INVENTION Embodiments of the present invention provide a method and a base station for co-channel interference coordination between different systems, which are used to provide a solution for co-channel interference problems between different system cells.

The first aspect provides a method for co-channel interference coordination between different systems, where the target cell in the second communication system shares the spectrum resource of the first cell in the first communication system, and the method includes:

The base station to which the target cell belongs acquires uplink interference power information generated by the cell edge user scheduled to be in the spectrum resource unit corresponding to the spectrum resource in the second cell to the target cell; the second cell is the first a neighboring cell of the first cell that uses the same spectrum resource as the first cell in the communication system;

The base station to which the target cell belongs uses the uplink interference power information as a contribution value of the second cell to the receiver noise of the target cell, and performs a noise floor lifting process on the target cell to implement a different system. Coordinated control of small-area co-channel interference.

With reference to the first aspect, in a first possible implementation manner of the first aspect, the uplink interference power information includes at least one of the cell edge users calculated by a base station to which the second cell belongs, within a specified time period. Uplink transmit power;

The base station to which the target cell belongs acquires the uplink interference power information generated by the cell edge user scheduled to be in the spectrum resource unit corresponding to the spectrum resource in the second cell, and includes: receiving, by the base station to which the target cell belongs The uplink transmit power of the at least one cell edge user sent by the base station to which the second cell belongs in a specified time period.

With reference to the first possible implementation manner of the first aspect, in a second possible implementation manner of the first aspect, the specified time period is that, by the base station to which the second cell belongs, at least one of the cell edge users is a period of time before the uplink transmit power in the specified time period; the uplink transmit power of the cell edge user is determined by the base station to which the second cell belongs according to the expected uplink receive power of the second cell and the cell edge Calculated by the user of the path loss information within the specified time period; or

Determining, by the base station to which the second cell belongs, at least one of the cell edges a period of time after the uplink transmit power of the user in the specified time period; the uplink transmit power of the cell edge user is pre-estimated by the base station to which the second cell belongs according to an internal scheduling algorithm.

With reference to the first aspect, in a third possible implementation manner of the first aspect, the base station to which the target cell belongs is configured to acquire a cell edge user scheduled to be in a spectrum resource unit corresponding to the spectrum resource in the second cell. The uplink interference power information generated by the target cell includes: receiving, by the base station to which the target cell belongs, at least one uplink transmit power reported by the cell edge user, which is to be combined with the first aspect, and the fourth possible aspect in the first aspect In an implementation manner, the base station to which the target cell belongs acquires uplink interference power information generated by the cell edge user scheduled to be in the spectrum resource unit corresponding to the spectrum resource in the second cell, where the target cell includes: the target cell The associated base station receives the measurement information reported by each of the at least one cell edge user;

The base station to which the target cell belongs calculates at least one path loss information of the cell edge user according to the measurement information reported by the at least one cell edge user, and determines at least one of the path loss information according to the at least one cell edge user. The uplink transmit power of the cell edge user will be combined with the fourth possible implementation of the first aspect. In a fifth possible implementation manner of the first aspect, the measurement information includes an energy interference ratio or a received signal code power. .

With reference to the first aspect, in a sixth possible implementation manner of the first aspect, the uplink interference power information is an uplink transmission of a base station to which the second cell belongs to at least one of the cell edge users in a specified time period. The result of normalization or averaging of power;

The base station to which the target cell belongs acquires the uplink interference power information generated by the cell edge user scheduled to be in the spectrum resource unit corresponding to the spectrum resource in the second cell, and includes: receiving, by the base station to which the target cell belongs a result of normalizing or averaging the uplink transmit power of the at least one cell edge user in the specified time period sent by the base station to which the second cell belongs.

Combining the first aspect or the first possible implementation of the first aspect or the second possible implementation of the first aspect or the third possible implementation of the first aspect or the fourth possible implementation of the first aspect The implementation manner or the fifth possible implementation manner of the first aspect, or the sixth possible implementation manner of the first aspect, in a seventh possible implementation manner of the first aspect, The base station uses the uplink interference power information as a contribution value of the second cell to the receiver noise of the target cell, and after performing the noise floor lifting process on the target cell, the method further includes:

And if the base station to which the target cell belongs cannot schedule any user in the target cell, send an overload notification to the base station to which the second cell belongs, and notify the base station to which the second cell belongs to the cell edge user. The at least one target user sends a first uplink transmit power control indication to instruct the at least one target user to decrease the uplink transmit power.

With the seventh possible implementation of the first aspect, in an eighth possible implementation manner of the first aspect, after the base station to which the target cell belongs sends an overload notification to the base station to which the second cell belongs, :

And performing, by the base station to which the target cell belongs, the uplink interference power information generated by the cell edge user scheduled to be in the spectrum resource unit in the second cell to the target cell, where the uplink interference power is generated. As a contribution value of the second cell to the receiver noise of the target cell, performing a bottom noise lifting process on the target cell, until the base station to which the target cell belongs may schedule the target cell Until now.

With reference to the eighth possible implementation manner of the first aspect, in a ninth possible implementation manner of the foregoing aspect, the method further includes: when the base station to which the target cell belongs, the user in the target cell may be scheduled And sending, by the base station to which the target cell belongs, an overload release notification to the base station to which the second cell belongs, and notifying the base station to which the second cell belongs to send the second uplink transmit power control indication to the at least one target user, to indicate The at least one target user stops reducing the uplink transmit power.

Combining the first aspect or the first possible implementation of the first aspect or the second possible implementation of the first aspect or the third possible implementation of the first aspect or the fourth possible implementation of the first aspect Implementation or a fifth possible implementation of the first aspect or a sixth possible implementation of the first aspect or a seventh possible implementation of the first aspect or an eighth possible implementation of the first aspect Or a ninth possible implementation manner of the first aspect, in a tenth possible implementation manner of the first aspect, the first communications system is a long term evolution LTE system, and the second communications system is a universal mobile communications system UMTS.

The second aspect provides a method for co-channel interference coordination between different systems, where the target cell in the second communication system shares the spectrum resource of the first cell in the first communication system, and the method includes:

Obtaining, by the base station to which the second cell belongs, the frequency corresponding to the spectrum resource scheduled in the second cell The uplink interference power information generated by the cell edge user on the spectrum resource unit to the target cell; the second cell is the first cell in the first communication system that uses the same spectrum resource as the first cell Adjacent cell

The base station to which the second cell belongs sends the uplink interference power information to the base station to which the target cell belongs, and the uplink interference power information is used as a contribution value of the second cell to the receiver noise of the target cell. And performing, by the base station to which the target cell belongs, a noise floor lifting process on the target cell, so as to implement coordinated control of co-channel interference between different system cells.

With reference to the second aspect, in a first possible implementation manner of the second aspect, the base station to which the second cell belongs acquires a cell edge user that is scheduled to be in a spectrum resource unit corresponding to the spectrum resource in the second cell. The uplink interference power information generated by the target cell includes:

The base station to which the second cell belongs calculates the uplink transmit power of the at least one cell edge user in the specified time period, and the uplink transmit power of the at least one cell edge user in the specified time period is used as the uplink interference. Power information.

With reference to the second aspect, in a second possible implementation manner of the second aspect, the base station to which the second cell belongs acquires a cell edge user that is scheduled to be in a spectrum resource unit corresponding to the spectrum resource in the second cell. The uplink interference power information generated by the target cell includes:

The base station to which the second cell belongs calculates uplink transmit power of at least one of the cell edge users in a specified time period;

The base station to which the second cell belongs performs normalization or equalization processing on the uplink transmit power of the at least one cell edge user in the specified time period, and uses the processed result as the uplink interference power information.

With reference to the first possible implementation of the second aspect or the second possible implementation of the second aspect, in a third possible implementation manner of the second aspect, the specified time period is the second cell The associated base station calculates a period of time before the uplink transmit power of the at least one cell edge user in the specified time period;

The base station to which the second cell belongs calculates the uplink transmit power of the at least one cell edge user in the specified time period, including:

Calculating, by the base station to which the second cell belongs, at least one of the cell edge users according to the expected uplink received power of the second cell and the path loss information of the at least one cell edge user in the specified time period. The uplink transmit power of the specified time period; or The specified time period is a period of time after the base station to which the second cell belongs calculates the uplink transmit power of the at least one cell edge user in the specified time period;

The base station to which the second cell belongs pre-estimates the uplink transmit power of at least one of the cell edge users in the specified time period according to an internal scheduling algorithm.

With reference to the second aspect, in a fourth possible implementation manner of the second aspect, after the base station to which the second cell belongs to send the uplink interference power information to the base station to which the target cell belongs, the method further includes:

The base station to which the second cell belongs receives the overload notification sent by the base station to which the target cell belongs, and the overload notification is that the base station to which the target cell belongs cannot perform the target after performing the noise floor lifting process on the target cell. Sent when any user in the cell is sent;

And transmitting, by the base station to the second cell, the first uplink transmit power control indication to the at least one target user of the cell edge user according to the overload notification, to instruct the at least one target user to decrease the uplink transmit power.

With reference to the fourth possible implementation of the second aspect, in a fifth possible implementation manner of the second aspect, the base station to which the second cell belongs sends the at least one target user in the cell edge user After the first uplink transmit power control indication, the method further includes:

The base station to which the second cell belongs to obtain the uplink interference power information generated by the cell edge user scheduled to be in the spectrum resource unit in the second cell to the target cell, and the uplink interference is generated. The power information is sent to the operation of the base station to which the target cell belongs.

With the fifth possible implementation of the second aspect, in a sixth possible implementation manner of the second aspect, the method further includes: receiving, by the base station to which the second cell belongs, the base station to which the target cell belongs The overload cancellation notification is sent by the base station to which the target cell belongs when the user in the target cell can be scheduled;

And the base station to which the second cell belongs sends a second uplink transmit power control indication to the at least one target user according to the overload release notification, to indicate that the at least one target user stops reducing the uplink transmit power.

Combining the second aspect or the first possible implementation of the second aspect or the second possible implementation of the second aspect or the third possible implementation of the second aspect or the fourth aspect of the second aspect The fifth possible implementation manner of the second aspect or the sixth possible implementation manner of the second aspect, in a seventh possible implementation manner of the second aspect, the first communications system is In a long term evolution LTE system, the second communication system is a universal mobile communication system UMTS.

The third aspect provides a base station, which belongs to the second communication system and covers the target cell in the second communication system, where the target cell shares the spectrum resource of the first cell in the first communication system, and the base station includes:

An acquiring module, configured to acquire uplink interference power information generated by a cell edge user scheduled to be in a spectrum resource unit corresponding to the spectrum resource in the second cell, where the second cell is the first communication system a neighboring cell of the first cell that uses the same spectrum resource as the first cell;

a processing module, configured to use the uplink interference power information acquired by the acquiring module as a contribution value of the second cell to a receiver noise of the target cell, and perform a noise floor lifting process on the target cell, to Coordinated control of co-channel interference between different systems is realized.

With reference to the third aspect, in a first possible implementation manner of the third aspect, the uplink interference power information includes at least one of the cell edge users calculated by a base station to which the second cell belongs, within a specified time period. Uplink transmit power;

The acquiring module is specifically configured to receive uplink transmit power of at least one cell edge user sent by the base station to which the second cell belongs, within a specified time period.

With reference to the first possible implementation manner of the third aspect, in a second possible implementation manner of the third aspect, the specified time period is that, by the base station to which the second cell belongs, the at least one cell edge user is a period of time before the uplink transmit power in the specified time period; the uplink transmit power of the cell edge user is determined by the base station to which the second cell belongs according to the expected uplink receive power of the second cell and the cell edge Calculated by the user of the path loss information within the specified time period; or

The specified time period is a period of time after the at least one cell edge user in the specified time period is calculated by the base station to which the second cell belongs; the uplink transmit power of the cell edge user is The base station to which the second cell belongs is estimated in advance according to an internal scheduling algorithm.

With reference to the third aspect, in a third possible implementation manner of the third aspect, the acquiring module is specifically configured to receive uplink transmit power that is reported by the at least one cell edge user, and at least With reference to the third aspect, in a fourth possible implementation manner of the third aspect, the acquiring module is configured to receive, by the at least one cell edge user, the measurement information reported by the at least one cell edge user. Measure information, calculate path loss information of at least one of the cell edge users, determine uplink transmit power of at least one of the cell edge users according to at least one path loss information of the cell edge user, and at least one of the cell edge users The uplink transmit power is used as the uplink interference power information.

In conjunction with the fourth possible implementation of the third aspect, in a fifth possible implementation manner of the third aspect, the measurement information includes an energy interference ratio or a received signal code power.

With reference to the third aspect, in a sixth possible implementation manner of the third aspect, the uplink interference power information is that the base station to which the second cell belongs to uplink transmission of at least one of the cell edge users in a specified time period The result of normalization or averaging of power;

The acquiring module is specifically configured to receive a result of normalizing or averaging the uplink transmit power of the at least one cell edge user in the specified time period, which is sent by the base station to which the second cell belongs.

Combining the third aspect or the first possible implementation of the third aspect or the second possible implementation of the third aspect or the third possible implementation of the third aspect or the fourth possible implementation of the third aspect The fifth possible implementation manner of the third aspect or the sixth possible implementation manner of the third aspect, in a seventh possible implementation manner of the third aspect, the base station further includes: a scheduling module, Used to schedule users in the target cell;

a sending module, configured to send an overload to the base station to which the second cell belongs when the scheduling module is unable to schedule any user in the target cell after performing the noise floor lifting process on the target cell by the processing module Notifying that the base station to which the second cell belongs sends a first uplink transmit power control indication to at least one target user of the cell edge users, to instruct the at least one target user to decrease uplink transmit power.

With the seventh possible implementation of the third aspect, in an eighth possible implementation manner of the third aspect, the sending module is further configured to: after the sending the overload notification, trigger the acquiring module and the The processing module re-executes the corresponding operation until the scheduling module can schedule users in the target cell.

In conjunction with the eighth possible implementation of the third aspect, the ninth possible implementation in the third aspect In the current mode, the sending module is further configured to: when the scheduling module can schedule a user in the target cell, send an overload cancellation notification to the base station to which the second cell belongs, and notify the base station to which the second cell belongs. And transmitting, by the at least one target user, a second uplink transmit power control indication to indicate that the at least one target user stops reducing the uplink transmit power.

Combining the third aspect or the first possible implementation of the third aspect or the second possible implementation of the third aspect or the third possible implementation of the third aspect or the fourth possible implementation of the third aspect Implementation or a fifth possible implementation of the third aspect or a sixth possible implementation of the third aspect or a seventh possible implementation of the third aspect or an eighth possible implementation of the third aspect Or a ninth possible implementation manner of the third aspect, in a tenth possible implementation manner of the third aspect, the first communications system is a long term evolution LTE system, and the second communications system is a universal mobile communications system UMTS.

A fourth aspect provides a base station that belongs to a first communication system and covers a second cell in the first communication system, where the second cell is adjacent to the first cell in the first communication system and uses the same a cell of the spectrum resource, the target cell in the second communication system shares the spectrum resource of the first cell; the base station includes:

An acquiring module, configured to acquire uplink interference power information generated by a cell edge user scheduled to be in a spectrum resource unit corresponding to the spectrum resource in the second cell to the target cell;

a sending module, configured to send the uplink interference power information acquired by the acquiring module to a base station to which the target cell belongs, where the uplink interference power information is used as a receiver noise floor of the second cell to the target cell The contribution value is used by the base station to which the target cell belongs to perform base noise lifting processing on the target cell, so as to implement coordinated control of co-channel interference between different system cells.

With reference to the fourth aspect, in a first possible implementation manner of the fourth aspect, the acquiring module is specifically configured to calculate an uplink transmit power of the at least one cell edge user in a specified time period, where the at least one cell is The uplink transmit power of the edge user in the specified time period is used as the uplink interference power information.

With reference to the fourth aspect, in a second possible implementation manner of the fourth aspect, the acquiring module is specifically configured to calculate an uplink transmit power of the at least one cell edge user in a specified time period, for at least one of the cells The edge user performs normalization or averaging processing on the uplink transmit power in the specified time period, and uses the processed result as the uplink interference power information.

Combining the first possible implementation of the fourth aspect or the second possible implementation of the fourth aspect In a third possible implementation manner of the fourth aspect, the specified time period is that the acquiring module calculates a period of time before the uplink transmit power of the at least one cell edge user in the specified time period;

The acquiring module is configured to calculate uplink transmit power of at least one of the cell edge users in a specified time period, including:

The acquiring module is configured to calculate, according to the expected uplink received power of the second cell and the path loss information of the at least one cell edge user in the specified time period, the at least one cell edge user in the designating The uplink transmit power of the time period; or

The specified time period is a period of time after the obtaining module calculates the uplink transmit power of the at least one cell edge user in the specified time period;

The acquiring module is specifically configured to pre-estimate uplink transmit power of at least one of the cell edge users in the specified time period according to an internal scheduling algorithm.

With reference to the fourth aspect or the first possible implementation of the fourth aspect or the second possible implementation of the fourth aspect or the third possible implementation of the fourth aspect, the fourth possibility in the fourth aspect In an implementation manner, the base station further includes:

a receiving module, configured to: after the transmitting module sends the uplink interference power information, receive an overload notification sent by a base station to which the target cell belongs, where the overload notification is that the base station to which the target cell belongs is in the target cell Sent when any user in the target cell cannot be scheduled after the noise floor lifting process is performed;

The sending module is further configured to send, according to the overload notification received by the receiving module, a first uplink transmit power control indication to at least one target user in the cell edge user, to instruct the at least one target user to decrease uplink Transmit power.

With the fourth possible implementation of the fourth aspect, in a fifth possible implementation manner of the fourth aspect, the sending module is further configured to: after the sending the first uplink transmit power control indication, trigger the The acquisition module and the sending module themselves continue to perform the corresponding operations.

With reference to the fifth possible implementation manner of the foregoing aspect, in a sixth possible implementation manner of the fourth aspect, the receiving module is further configured to receive an overload cancellation notification sent by a base station to which the target cell belongs, The overload cancellation notification is that the base station to which the target cell belongs can schedule the target Sent when the user in the cell is sent;

The sending module is further configured to send, according to the overload cancellation notification received by the receiving module, a second uplink transmit power control indication to the at least one target user, to indicate that the at least one target user stops reducing the uplink transmit power.

Combining the fourth aspect or the first possible implementation of the fourth aspect or the second possible implementation of the fourth aspect or the third possible implementation of the fourth aspect or the fourth possible implementation of the fourth aspect The fifth possible implementation manner of the fourth aspect or the sixth possible implementation manner of the fourth aspect, in a seventh possible implementation manner of the fourth aspect, the first communication system is a long term evolution In the LTE system, the second communication system is a universal mobile communication system UMTS.

The fifth aspect provides a base station, which belongs to the second communication system and covers the target cell in the second communication system, where the target cell shares the spectrum resource of the first cell in the first communication system, and the base station includes:

Memory for storing programs;

a processor, configured to: execute, to: obtain uplink interference power information generated by a cell edge user scheduled to be in a spectrum resource unit corresponding to the spectrum resource in the second cell to the target cell, where The uplink interference power information is used as a contribution value of the second cell to the receiver noise of the target cell, and performs a noise floor lifting process on the target cell to implement coordinated control of co-channel interference between different systems; The second cell is a neighboring cell of the first cell in the first communication system that uses the same spectrum resource as the first cell.

With reference to the fifth aspect, in a first possible implementation manner of the fifth aspect, the uplink interference power information includes at least one of the cell edge users calculated by a base station to which the second cell belongs, within a specified time period. Uplink transmit power;

The base station further includes:

a receiver, configured to receive uplink transmit power of at least one of the cell edge users sent by the base station to which the second cell belongs, within a specified time;

The processor is configured to acquire the uplink interference power information that is generated by the cell edge user that is scheduled to be in the spectrum resource unit corresponding to the spectrum resource in the second cell to the target cell, where the processor is specifically configured to acquire the The uplink transmit power of the at least one of the cell edge users received by the receiver within a specified time.

In conjunction with the first possible implementation of the fifth aspect, the second possible implementation in the fifth aspect In the current mode, the specified time period is a period of time before the at least one cell edge user in the specified time period is calculated by the base station to which the second cell belongs; the uplink transmission of the cell edge user The power is calculated by the base station to which the second cell belongs according to the expected uplink receiving power of the second cell and the path loss information of the cell edge user in the specified time period; or

With reference to the fifth aspect, in a third possible implementation manner of the fifth aspect, the base station further includes:

a receiver, configured to receive uplink transmit power reported by each of the cell edge users, where the processor is configured to acquire a cell edge user scheduled to be in a spectrum resource unit corresponding to the spectrum resource in the second cell, to the target The uplink interference power information generated by the cell includes: the processor is specifically configured to use the uplink transmit power of the at least one cell edge user received by the receiver as the uplink interference power information.

With reference to the fifth aspect, in a fourth possible implementation manner of the fifth aspect, the base station further includes:

a receiver, configured to receive measurement information reported by each of the at least one cell edge user, where the processor is configured to acquire a cell edge user scheduled to be in a spectrum resource unit corresponding to the spectrum resource in the second cell, to the target cell And generating, by the processor, the path loss information of the at least one cell edge user according to the measurement information reported by the at least one cell edge user received by the receiver, according to at least one The path loss information of the cell edge user determines the uplink transmit power of the at least one cell edge user, and the fourth possible implementation manner of the fifth aspect is used in the fifth possible implementation manner of the fifth aspect. The measurement information includes an energy interference ratio or a received signal code power.

With reference to the fifth aspect, in a sixth possible implementation manner of the fifth aspect, the uplink interference power information is an uplink transmission of a base station to which the second cell belongs to at least one of the cell edge users in a specified time period. The result of normalization or averaging of power; The base station further includes:

a receiver, configured to receive, after receiving, by the base station to which the second cell belongs, a result of normalizing or averaging uplink transmit power of at least one of the cell edge users in a specified time period;

The processor is configured to acquire the uplink interference power information that is generated by the cell edge user that is scheduled to be in the spectrum resource unit corresponding to the spectrum resource in the second cell to the target cell, where the processor is specifically configured to acquire the And a result of normalizing or averaging the uplink transmit power of the at least one of the cell edge users in the specified time period sent by the base station to which the second cell belongs, which is received by the receiver.

Combining the fifth aspect or the first possible implementation of the fifth aspect or the second possible implementation of the fifth aspect or the third possible implementation of the fifth aspect or the fourth possible implementation of the fifth aspect The fifth possible implementation manner of the fifth aspect or the sixth possible implementation manner of the fifth aspect, in a seventh possible implementation manner of the fifth aspect, the base station further includes: a scheduler, Used to schedule users in the target cell;

a transmitter, configured to send an overload to the base station to which the second cell belongs when the scheduler fails to schedule any user in the target cell after the processor performs a noise floor lifting process on the target cell And notifying that the base station to which the second cell belongs sends the first uplink transmit power control indication to the at least one target user of the cell edge user, to indicate that the at least one target user decreases the uplink transmit power.

With the seventh possible implementation of the fifth aspect, in an eighth possible implementation manner of the fifth aspect, the transmitter is further configured to: after the sending the overload notification, trigger the processor to re-execute the corresponding Operation until the scheduler can schedule users in the target cell.

With reference to the eighth possible implementation manner of the fifth aspect, in a ninth possible implementation manner of the fifth aspect, the transmitter is further configured to: when the scheduler can schedule a user in the target cell, Sending an overload release notification to the base station to which the second cell belongs, so that the base station to which the second cell belongs sends a second uplink transmit power control indication to the at least one target user, to indicate that the at least one target user stops decreasing. Uplink transmit power.

Combining the fifth aspect or the first possible implementation of the fifth aspect or the second possible implementation of the fifth aspect or the third possible implementation of the fifth aspect or the fourth possible implementation of the fifth aspect Implementation or fifth possible implementation of the fifth aspect or sixth possibility of the fifth aspect The implementation of the fifth possible implementation of the fifth aspect or the eighth possible implementation of the fifth aspect or the ninth possible implementation of the fifth aspect, the tenth possible aspect of the fifth aspect In an implementation manner, the first communications system is a Long Term Evolution (LTE) system, and the second communications system is a Universal Mobile Telecommunications System (UMTS).

A sixth aspect provides a base station, belonging to a first communication system and covering a second cell in the first communication system, where the second cell is adjacent to the first cell in the first communication system and uses the same a cell of the spectrum resource, the target cell in the second communication system shares the spectrum resource of the first cell; the base station includes:

Memory for storing programs;

a processor, configured to: execute, by the processor, the uplink interference power information generated by the cell edge user scheduled to be in the spectrum resource unit corresponding to the spectrum resource in the second cell to the target cell;

And a transmitter, configured to send the uplink interference power information to a base station to which the target cell belongs, so that the base station to which the target cell belongs, the uplink interference power information is used as the second cell to the target cell The contribution value of the receiver bottom noise is subjected to a noise floor lifting process on the target cell to implement coordinated control of co-channel interference between different system cells.

With reference to the sixth aspect, in a first possible implementation manner of the sixth aspect, the processor is specifically configured to calculate an uplink transmit power of the at least one cell edge user in a specified time period, where the at least one cell is The uplink transmit power of the edge user in the specified time period is used as the uplink interference power information.

With reference to the sixth aspect, in a second possible implementation manner of the sixth aspect, the processor is specifically configured to calculate an uplink transmit power of the at least one cell edge user in a specified time period, for at least one of the cells The edge user performs normalization or averaging processing on the uplink transmit power in the specified time period, and uses the processed result as the uplink interference power information.

With reference to the first possible implementation manner of the sixth aspect, or the second possible implementation manner of the sixth aspect, in a third possible implementation manner of the sixth aspect, the specified time period is calculated by the acquiring module a period of time before the uplink transmit power of the at least one cell edge user in the specified time period;

The processor is configured to calculate an uplink transmit power of the at least one cell edge user in a specified time period, including: The processor is configured to calculate, according to the expected uplink received power of the second cell and the path loss information of the at least one cell edge user in the specified time period, the at least one cell edge user in the designating The uplink transmit power of the time period; or

The processor is configured to calculate an uplink transmit power of the at least one cell edge user in a specified time period, including:

The processor is specifically configured to pre-estimate uplink transmit power of at least one of the cell edge users in the specified time period according to an internal scheduling algorithm.

With reference to the sixth aspect or the first possible implementation of the sixth aspect or the second possible implementation of the sixth aspect or the third possible implementation of the sixth aspect, the fourth possibility in the sixth aspect In an implementation manner, the base station further includes:

a receiver, configured to receive, after the transmitter sends the uplink interference power information, an overload notification sent by a base station to which the target cell belongs, where the overload notification is that the base station to which the target cell belongs is in the target cell Sent when any user in the target cell cannot be scheduled after the noise floor lifting process is performed;

The transmitter is further configured to send, according to the overload notification received by the receiving module, a first uplink transmit power control indication to at least one target user of the cell edge user, to instruct the at least one target user to decrease uplink Transmit power.

With the fourth possible implementation of the sixth aspect, in a fifth possible implementation manner of the sixth aspect, the transmitter is further configured to: after the sending the first uplink transmit power control indication, trigger the The processor and the transmitter themselves continue to perform the corresponding operations.

With reference to the fifth possible implementation manner of the sixth aspect, in a sixth possible implementation manner of the sixth aspect, the receiver is further configured to receive an overload cancellation notification sent by a base station to which the target cell belongs, The overload cancellation notification is sent by the base station to which the target cell belongs when the user in the target cell can be scheduled;

The transmitter is further configured to send, according to the overload release notification, a second uplink transmit power control indication to the at least one target user, to indicate that the at least one target user stops reducing the uplink transmit power.

Combining the sixth aspect or the first possible implementation of the sixth aspect or the second aspect of the sixth aspect A possible implementation or a third possible implementation of the sixth aspect or a fourth possible implementation of the sixth aspect or a fifth possible implementation of the sixth aspect or a sixth possible implementation of the sixth aspect In a seventh possible implementation manner of the sixth aspect, the first communications system is a Long Term Evolution (LTE) system, and the second communications system is a Universal Mobile Telecommunications System (UMTS).

The method for coordinating co-channel interference between different systems and the base station provided by the embodiment of the present invention, the target cell in the second communication system shares the spectrum resource of the first cell in the first communication system, and the second cell in the first communication system The first cell uses the same spectrum resource and is adjacent to the first cell, and the second cell between the first communication systems generates the same-frequency interference to the target cell in the second communication system. In this scenario, the target cell belongs to Obtaining, by the base station, the uplink interference power information generated by the cell edge user in the spectrum resource unit (for example, the physical resource block of the LTE system) in the second cell to the target cell, and using the acquired uplink interference power information as the second The contribution value of the cell to the receiver noise of the target cell is subjected to a noise floor lifting process for the target cell to achieve coordinated control of co-channel interference between different systems, thereby solving the problem of co-channel interference between different system cells. BRIEF DESCRIPTION OF THE DRAWINGS In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, a brief description of the drawings used in the embodiments or the prior art description will be briefly described below. The drawings are some embodiments of the present invention, and those skilled in the art can obtain other drawings based on these drawings without any inventive labor.

FIG. 1 is a schematic diagram of an application scenario of a co-channel interference caused by using the same spectrum resource by a different system cell according to an embodiment of the present disclosure;

2 is a flow chart of a method for co-channel interference coordination between different systems according to an embodiment of the present invention;

3 is a flow chart of another method for co-channel interference coordination between different systems according to an embodiment of the present invention;

4 is a flow chart of still another method for co-channel interference coordination between different systems according to an embodiment of the present invention;

FIG. 5 is a flowchart of still another method for co-channel interference coordination between different systems according to an embodiment of the present invention;

FIG. 6 is a schematic structural diagram of a base station according to an embodiment of the present disclosure; FIG. 7 is a schematic structural diagram of another base station according to an embodiment of the present disclosure;

FIG. 8 is a schematic structural diagram of still another base station according to an embodiment of the present disclosure;

FIG. 9 is a schematic structural diagram of still another base station according to an embodiment of the present disclosure;

FIG. 10 is a schematic structural diagram of still another base station according to an embodiment of the present disclosure;

FIG. 11 is a schematic structural diagram of still another base station according to an embodiment of the present invention. The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. The embodiments are a part of the embodiments of the invention, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

FIG. 1 is a schematic diagram of an application scenario of a co-channel interference caused by using the same spectrum resource by a different system cell according to an embodiment of the present invention. As shown in FIG. 1, in a heterogeneous network deployed by a single carrier, a first communication system and a second communication system are included, and the first communication system and the second communication system are communication systems of different systems. The second cell in the first communication system uses the same spectrum resource as the first cell, and is adjacent to the first cell, and the second cell generates co-channel interference to the first cell. In order to improve the utilization of spectrum resources, the heterogeneous network uses the FSU method. In a scenario, the target cell in the second communication system shares the spectrum resource of the first cell in the first communication system, and at this time, the same-frequency interference of the second cell to the first cell in the first communication system becomes the first The same-frequency interference of the target cell of the second cell to the different system. In the scenario shown in FIG. 1, a cell in the second communication system that needs to share the spectrum resource of the first cell is referred to as a target cell, but is not limited to the name. Figure 1 shows only one application scenario of the same system with the same frequency interference, but it is not limited to this. For the problem of co-channel interference between different system cells, the following embodiment of the present invention provides a solution.

2 is a flow chart of a method for co-channel interference coordination between different systems according to an embodiment of the present invention. In this embodiment, the target cell in the second communication system shares the spectrum resource of the first cell in the first communication system. As shown in FIG. 2, the method includes:

The base station to which the target cell belongs acquires uplink interference power information generated by the cell edge user scheduled to be in the spectrum resource unit corresponding to the spectrum resource in the second cell to the target cell; the second cell is the first communication system. Phase of the first cell using the same spectrum resource as the first cell Neighboring cell.

202. The base station to which the target cell belongs uses the uplink interference power information as a contribution value of the second cell to the receiver noise of the target cell, and performs a noise floor lifting process on the target cell to implement co-channel interference between the different systems. Coordinated control.

In the present embodiment, the second communication system mainly refers to a communication system supporting a noise floor lifting processing mechanism, and may be, for example, a UMTS system and other systems evolved by the UMTS system. The first communication system may be a communication system different from the UMTS system and other systems evolved by the UMTS system, and may be, for example, an LTE system, a Global System for Mobile communication (GSM) system, or the like. If the first communication system is an LTE system, the frequency resource unit may be a physical resource block (PRB).

Since the target cell shares the spectrum resource of the first cell, the same-frequency interference of the second cell to the first cell in the first communication system is converted into the same-frequency interference to the target cell. Since the second cell generates co-channel interference to the target cell, in the uplink, the transmit power of the user in the second cell, especially the transmit power of the cell edge user in the second cell, may cause the base station to which the target cell belongs. The receiver's Rise Over Thermal (ROT) changes. Based on this, the base station to which the target cell belongs acquires the uplink interference power information generated by the cell edge user on the spectrum resource of the first cell shared by the target cell (ie, the spectrum resource of the second cell) in the second cell to the target cell, The uplink interference power information is used as a contribution value of the second cell to the receiver noise of the target cell, and the bottom noise lifting process is performed on the target cell based on the contribution value, so as to achieve coordinated control of co-channel interference between different systems.

Herein, the cell edge user in the second cell refers to a terminal user located at the edge of the cell. The cell edge may be determined by the base station according to the strength of the cell measurement signal sent by the user equipment, for example, the reference signal received power of the cell.

In an optional implementation manner, the uplink interference power information includes uplink transmit power of at least one or each of the cell edge users calculated by the base station to which the second cell belongs within a specified time period.

An optional case, the specified time period is a period of time before the base station to which the second cell belongs calculates at least one or each of the cell edge users before the uplink transmit power in the specified time period. Based on this, the uplink transmit power of the cell edge user may be determined by the base station to which the second cell belongs according to the expected uplink receive power of the second cell and the cell edge user. Calculated by the path loss information within the specified time period. In this case, the uplink transmit power of at least one or each cell edge user calculated by the base station to which the second cell belongs is a posteriori.

In another optional case, the specified time period is a period of time after the base station to which the second cell belongs calculates at least one or each of the cell edge users after the uplink transmit power in the specified time period. Based on this, the uplink transmit power of each of the cell edge users may be pre-estimated by the base station to which the second cell belongs according to an internal scheduling algorithm. In this case, the uplink transmit power of each cell edge user calculated by the base station to which the second cell belongs is a priori. The internal algorithm is usually related to a specific implementation, which is not limited by the embodiment of the present invention. For example, if the base station to which the second cell belongs knows the mobility state of the cell edge user or the motion trajectory of the cell edge user, the base station to which the second cell belongs can predict the location of the cell edge user at the upcoming time point. Determining a power difference according to the pre-judgment position of the cell edge user, and then adding or subtracting the calculated power difference between the calculated current uplink transmit power of the cell edge user, thereby estimating the required location of the cell edge user at the next time point. Uplink transmit power.

Based on this, an implementation of the step 201 includes: receiving, by the base station to which the target cell belongs, uplink transmit power of at least one or each of the cell edge users sent by the base station to which the second cell belongs, within a specified time.

In another optional implementation, an implementation manner of the step 201 includes: receiving, by the base station to which the target cell belongs, the uplink transmit power reported by the at least one or each of the cell edge users. In this implementation manner, the cell edge user is required to be a dual-card dual-standby UE, that is, the cell edge users are simultaneously under the coverage of the second cell and the target cell, and can communicate with the base station to which the second cell belongs, or The base station to which the cell belongs can communicate, and the cell edge user can directly report the uplink transmit power in the second cell to the base station to which the target cell belongs.

In a further optional implementation, an implementation manner of the step 201 includes: receiving, by the base station to which the target cell belongs, measurement information reported by each of the at least one or each of the cell edge users, according to at least one or each of the cell edges. Calculating, by the measurement information reported by the user, path loss information of at least one or each of the cell edge users, determining, according to path loss information of at least one or each of the cell edge users, uplink of at least one or each of the cell edge users The transmit power, in at least one or every mode, requires the cell edge user to be a dual-card dual-standby UE, that is, the cell edge users are simultaneously at the same time The coverage of the second cell and the target cell may be communicated with the base station to which the second cell belongs, or may be communicated with the base station to which the target cell belongs, so that the cell edge user may report the measurement of the second cell to the base station to which the target cell belongs. information.

It is to be noted that the cell edge user is a dual-card dual-standby UE or a dual-card single-standby UE or a single-mode UE, and is applicable to the base station to which the target cell belongs to obtain the uplink interference power information by using the base station to which the second cell belongs. the way.

Optionally, the measurement information includes an energy interference ratio Ec/Io, or may be a Received Signal Code Power (RSCP).

The process of calculating the path loss information of the cell edge user according to the measurement information reported by the user of the cell edge can be referred to various methods provided in the prior art, which is not described in detail in this embodiment.

After calculating the path loss information of the cell edge user, determining the uplink transmit power of the cell edge user according to the path loss information of the cell edge user may be: sending the path loss information of the cell edge user and the base station to which the second cell belongs to the cell edge The sum of the expected uplink received power of the user is used as the uplink transmit power of the cell edge user.

In the above embodiments, the base station to which the target cell belongs is the uplink transmit power of at least one or each cell edge user scheduled to be in the spectrum resource unit of the first cell shared by the target cell in the second cell, as the second cell. Uplink interference power information for the target cell. The noise floor rise is a background interference phenomenon that occurs in a small area. The bottom noise lifting process refers to the base station to which the cell belongs to suppress the bottom noise level of the cell back to the normal specified value by some control means. In this embodiment, one of the causes of the bottom noise lifting phenomenon is that the uplink transmit power of the cell edge users is calculated into the noise floor of the target cell, because the cell edge users in the second cell start to initiate uplink data transmission. Therefore, the target cell noise floor reference or level rise is caused. Based on this, an implementation manner of the step 202 includes: selecting, by the base station to which the target cell belongs, a partial cell edge user from the cell edge users according to the internal scheduling policy and the received uplink transmit power of the at least one or each cell edge user. The uplink transmit power of the selected cell edge user is reduced.

In still another optional implementation, the uplink interference power information is that the base station to which the second cell belongs normalizes or averages uplink transmit power of at least one or each of the cell edge users in a specified time period. The result after the treatment.

In this embodiment, two alternative cases are also included. An optional case is that the specified time period is used by the base station to which the second cell belongs to calculate at least one or each of the cell edges. The period of time before the uplink transmit power of the user within the specified time period. Based on this, the uplink transmit power of the cell edge user may be determined by the base station to which the second cell belongs according to the expected uplink receive power of the second cell and the path loss information of the cell edge user in the specified time period. Calculated. In this case, the uplink transmit power of at least one or each cell edge user calculated by the base station to which the second cell belongs is a posteriori.

In another optional case, the specified time period is a period of time after the base station to which the second cell belongs calculates at least one or each of the cell edge users after the uplink transmit power in the specified time period. Based on this, the uplink transmit power of each of the cell edge users may be pre-estimated by the base station to which the second cell belongs according to an internal scheduling algorithm. In this case, the uplink transmit power of at least one or each cell edge user calculated by the base station to which the second cell belongs is a priori.

After the target cell calculates the uplink transmit power of the at least one or each cell edge user, for example, the uplink transmit power of each cell edge user may be subjected to arithmetic average or root mean averaging to obtain uplink interference power information. Alternatively, after the target cell calculates the uplink transmit power of the at least one or each cell edge user, for example, the uplink transmit power of each cell edge user may be normalized to obtain uplink interference power information.

According to the embodiment, a further implementation of the step 201 includes: receiving, by the base station to which the target cell belongs, uplink transmission sent by the base station to which the second cell belongs to at least one or each of the cell edge users within a specified time period. The result of normalization or averaging of power.

And the result of normalizing or averaging the uplink transmit power of the at least one or each of the cell edge users in the specified time period by the base station to which the target cell belongs, as the uplink interference power information of the second cell to the target cell On the basis of the foregoing, an implementation manner of the step 202 includes: selecting, by the base station to which the target cell belongs, a partial cell edge user from the cell edge users according to the internal scheduling policy and the received normalized or averaged processing result, and reducing The uplink transmit power of the selected cell edge user.

In this embodiment, the target cell in the second communication system shares the spectrum resource of the first cell in the first communication system, and the second cell in the first communication system uses the same spectrum resource as the first cell and is in phase with the first cell. Adjacent, the second cell between the first communication systems generates co-channel interference to the target cell in the second communication system. In this scenario, the base station to which the target cell belongs acquires the uplink interference power signal generated by the cell edge user scheduled to be in the spectrum resource unit in the second cell to the target cell. And the obtained uplink interference power information is used as a contribution value of the second cell to the receiver noise of the target cell, and performs a noise floor lifting process on the target cell to implement coordinated control of co-channel interference between different systems. The problem of co-channel interference between different system cells is solved.

FIG. 3 is a flow chart of another method for co-channel interference coordination between different systems according to an embodiment of the present invention. As shown in FIG. 3, the method includes:

301. The base station to which the target cell belongs acquires uplink interference power information generated by the cell edge user scheduled to be in the spectrum resource unit corresponding to the spectrum resource in the second cell, where the second cell is the first communication system. A neighboring cell of a first cell that uses the same spectrum resource as the first cell.

302. The base station to which the target cell belongs uses the uplink interference power information as a contribution value of the second cell to the receiver noise of the target cell, and performs a bottom noise lifting process on the target cell to implement co-channel interference between different systems. Coordinated control.

Steps 310 and 302 can be referred to the description of steps 201 and 202, and details are not described herein again.

303. The base station to which the target cell belongs determines whether the user in the target cell can be scheduled. If the determination result is no, that is, the base station to which the target cell belongs cannot schedule any user in the target cell, step 304 is performed, and if the determination result is yes, End this operation.

Further, the base station to which the target cell belongs performs base noise lifting processing on the target cell according to the uplink interference power information, which may cause the base noise level of the target cell to be high due to the noise floor rise, and the base station to which the target cell belongs cannot be scheduled. Any user in the target cell (equivalent to the saturated capacity of the target cell). Based on this, after the base station to which the target cell belongs is subjected to the noise floor lifting process on the target cell according to the uplink interference power information, it is further determined whether the user in the target cell can be scheduled, so that the base noise level is not high in time. The problem of scheduling any user in the target cell is resolved.

The base station to which the target cell belongs sends an overload notification to the base station to which the second cell belongs, and notifies the base station to which the second cell belongs to send a first uplink transmit power control indication to at least one target user in the cell edge user, to indicate the At least one target user reduces the uplink transmit power and performs step 305.

305. Acquire the uplink interference power information generated by the cell edge user scheduled to be in the spectrum resource unit in the second cell to the target cell, and use the uplink interference power information as a second cell target. The contribution value of the receiver noise of the cell, and the noise floor rise of the target cell Processing to achieve coordinated control of co-channel interference between different systems.

When the base station to which the target cell belongs determines that any user in the target cell cannot be scheduled due to the bottom noise rise, the base station to which the target cell belongs has learned that the part of the noise floor raises the interference power from the second cell, so the target cell belongs to The base station can send an overload notification to the base station to which the second cell belongs by the associated RNC. According to the overload notification, the base station to which the second cell belongs determines that at least one cell edge user is the target user from the cell edge users scheduled to be in the spectrum resource unit of the first cell shared by the target cell, and sends the first uplink to the at least one target user. Transmitting power control indications to indicate that at least one target user is gradually reducing its transmit power. The base station to which the second cell belongs may preferentially select a user with a large transmit power as the target user according to the size of the transmit power of the edge user of each cell.

In this way, since the uplink transmit power of the cell edge user in the spectrum resource unit of the first cell shared by the target cell in the second cell is reduced, the uplink interference power information generated by the second cell to the target cell may also be changed. Based on this, the base station to which the target cell belongs continues to step 305. That is, after the base station to which the target cell belongs sends an overload notification to the base station to which the second cell belongs, the uplink interference generated by the cell edge user scheduling the spectrum resource unit of the first cell shared by the target cell in the second cell to the target cell is re-acquired. The power information is used, and the bottom noise lifting process is performed on the target cell according to the obtained uplink interference power information.

306. The base station to which the target cell belongs determines whether the user in the target cell can be scheduled. If the determination result is no, that is, the base station to which the target cell belongs cannot schedule any user in the target cell, the process returns to step 305. If the determination result is yes, Then step 307 is performed.

307. The base station to which the target cell belongs sends an overload release notification to the base station to which the second cell belongs, and notifies the base station to which the second cell belongs to send a second uplink transmit power control indication to the at least one target user, to indicate the At least one target user stops reducing the uplink transmit power.

Then, the base station to which the target cell belongs determines whether the user in the target cell can be scheduled. If the determination result is no, that is, the user in the target cell cannot be scheduled, the target UE in the second cell is further reduced in uplink transmit power. The base station to which the target cell belongs performs step 305 until the base station to which the target cell belongs can schedule the user in the target cell; if the determination result is yes, the base station to which the target cell belongs to the second cell through the associated RNC. The associated base station sends an overload release notification, so that the base station to which the second cell belongs sends a second uplink transmit power control indication to the at least one target user, to indicate that the at least one target UE stops reducing the uplink transmit power. It can be seen that the target cell in the second communication system shares the spectrum resource of the first cell in the first communication system, and the second cell in the first communication system uses the same spectrum resource as the first cell and is adjacent to the first cell. Then, the second cell in the first communication system generates co-channel interference to the target cell in the second communication system. In this scenario, the base station to which the target cell belongs acquires the uplink interference power information generated by the cell edge user scheduled to be in the spectrum resource unit in the second cell, and uses the acquired uplink interference power information as the second cell pair. The contribution value of the receiver noise of the target cell is subjected to noise floor lifting processing for the target cell to achieve coordinated control of co-channel interference between different system cells, which not only solves the problem of co-channel interference between different system cells; The associated base station also ensures normal scheduling of users in the target cell by sending an overload notification and an overload cancellation notification to the base station to which the second cell belongs.

FIG. 4 is a flow chart of still another method for co-channel interference coordination between different systems according to an embodiment of the present invention. In this embodiment, the target cell in the second communication system shares the spectrum resource of the first cell in the first communication system. As shown in FIG. 4, the method includes:

401. The base station to which the second cell belongs acquires uplink interference power information generated by the cell edge user scheduled to be in the spectrum resource unit corresponding to the spectrum resource in the second cell, where the second cell is the first cell. a neighboring cell of the first cell that uses the same spectrum resource as the first cell in a communication system.

402. The base station to which the second cell belongs sends the uplink interference power information to the base station to which the target cell belongs, and the uplink interference power information is used as a contribution value of the second cell to the receiver noise of the target cell, and is used for the target. The base station to which the cell belongs performs bottom noise lifting processing on the target cell to implement coordinated control of co-channel interference between different system cells.

In the present embodiment, the second communication system mainly refers to a communication system supporting a noise floor lifting processing mechanism, and may be, for example, a UMTS system and other systems evolved by the UMTS system. The first communication system may be a communication system different from the UMTS system and other systems evolved by the UMTS system, and may be, for example, an LTE system, a GSM system, or the like.

Since the target cell shares the spectrum resource of the first cell, the same-frequency interference of the second cell to the first cell in the first communication system is converted into the same-frequency interference to the target cell. Since the second cell generates co-channel interference to the target cell, in the uplink, the transmit power of the user in the second cell, especially the transmit power of the cell edge user in the second cell, may cause the base station to which the target cell belongs. The receiver's noise floor changes. Then, the base station to which the second cell belongs acquires the second cell midtone The uplink interference power information generated by the cell edge user on the spectrum resource unit of the first cell shared by the target cell to the target cell, and is provided to the base station to which the target cell belongs, so that the base station to which the target cell belongs will use the uplink interference power. The information serves as a contribution value of the second cell to the receiver noise of the target cell, so as to perform a noise floor lifting process on the target cell, thereby solving the problem of co-channel interference between different systems.

Optionally, the base station to which the second cell belongs may obtain the addressing information of the spectrum resource of the first cell shared by the target cell and the location of the scheduled user in the second cell, before acquiring the uplink interference power information. A cell edge user scheduled to be on the spectrum resource in the second cell is determined. The addressing information of the spectrum resource includes information such as a number of a starting spectrum resource unit of the spectrum resource and a number of used spectrum resource units. The base station to which the second cell belongs is pre-known to the addressing information of the spectrum resource. For the location of the scheduled user in the second cell, the location information of the user may be transmitted by the external positioning server to the base station to which the second cell belongs, or may be directly received by the base station to which the second cell belongs according to the reference signal reported by the scheduled user. The Reference Signal Received Power (RSRP) information estimates the location of the scheduled user in the second cell.

In an optional implementation manner, an implementation manner of step 401 includes: calculating, by the base station to which the second cell belongs, uplink transmit power of at least one or each of the cell edge users in a specified time period, at least one or each The uplink transmit power of the cell edge user in the specified time period is used as the uplink interference power information. Correspondingly, in step 402, the base station to which the second cell belongs sends uplink transmit power of at least one or each cell edge user within a specified time period to the base station to which the target cell belongs. For example, after calculating the uplink transmit power of the at least one or each cell edge user, the base station to which the second cell belongs may fill the uplink transmit power of the at least one or each cell edge user into the bearer carrying the uplink interference power information. The information element (referred to as IE) is sent to the base station to which the target cell belongs.

In another optional implementation manner, an implementation manner of step 401 includes: calculating, by a base station to which the second cell belongs, uplink transmit power of at least one or each of the cell edge users within a specified time period; for at least one or each Uplink transmission work of the cell edge user in the specified time period The rate is normalized or averaged, and the processed result is used as the uplink interference power information. Correspondingly, in step 402, the base station to which the second cell belongs sends the normalized or averaged result to the base station to which the target cell belongs. For example, after the base station to which the second cell belongs is normalized or averaged for the uplink transmit power of the at least one or each cell edge user, the processing result may be filled in the IE that carries the uplink interference power information and sent to the IE. The base station to which the target cell belongs.

In the above two optional implementation manners, in an optional case, the specified time period is that, for the base station to which the second cell belongs, the at least one or each of the cell edge users is calculated within the specified time period. A period of time before the uplink transmit power. Based on this, the base station to which the second cell belongs calculates the uplink transmit power of the at least one or each of the cell edge users in the specified time period, including: the base station to which the second cell belongs according to the expected uplink receive of the second cell And calculating, according to the path loss information of the at least one or each of the cell edge users in the specified time period, the uplink transmit power of the at least one or each of the cell edge users in the specified time period. The expected uplink received power of the second cell may be preset by the base station to which the second cell belongs. The path loss information of the cell edge user in the specified time period can be obtained by using the base station to which the second cell belongs, by using various methods in the prior art, for example: by measuring the power headroom information of the edge users of each cell (Power Head Room, referred to as PHR, is calculated. In this case, the uplink transmit power of each cell edge user calculated by the base station to which the second cell belongs is a posteriori.

In another optional case, the specified time period is a period of time after the base station to which the second cell belongs calculates at least one or each of the cell edge users after the uplink transmit power in the specified time period. Based on this, the base station to which the second cell belongs calculates the uplink transmit power of the at least one or each of the cell edge users in the specified time period, including: the base station to which the second cell belongs is estimated in advance according to an internal scheduling algorithm. The uplink transmit power of one or each of the cell edge users within the specified time period. The internal algorithm is usually related to a specific implementation, which is not limited by the embodiment of the present invention. For example, if the base station to which the second cell belongs knows the mobility state of the cell edge user or the motion trajectory of the cell edge user, the base station to which the second cell belongs can predict the location of the cell edge user at the upcoming time point. Determining a power difference according to the pre-judgment position of the cell edge user, and then adding or subtracting the calculated power difference between the calculated current uplink transmit power of the cell edge user, thereby estimating the required location of the cell edge user at the next time point. Uplink transmit power. In this case, the uplink transmit power of each cell edge user calculated by the base station to which the second cell belongs is a priori. In this embodiment, the mode of the cell edge user is not limited, and may be a dual-card dual-standby UE, a dual-card single-standby UE, or a single-mode UE.

In this embodiment, the target cell in the second communication system shares the spectrum resource of the first cell in the first communication system, and the second cell in the first communication system uses the same spectrum resource as the first cell and is in phase with the first cell. The neighboring cell, the second cell between the first communication systems generates the same-frequency interference to the target cell in the second communication system. In this scenario, the base station to which the second cell belongs acquires and the second cell is scheduled to be shared in the target cell. The uplink interference power information generated by the cell edge UE on the spectrum resource unit of the first cell to the target cell is sent to the base station to which the target cell belongs, so that the base station to which the target cell belongs is used as the second cell to the target cell. The contribution value of the receiver's noise floor is subjected to a noise floor lifting process for the target cell to coordinate the co-channel interference between the different system cells, so that the scheduling of the cell edge user of the second cell minimizes the impact on the operating capacity of the target cell. In turn, the efficiency of using spectrum resources is improved.

FIG. 5 is a flow chart of still another method for co-channel interference coordination between different systems according to an embodiment of the present invention. The embodiment is provided to be implemented based on the embodiment shown in FIG. 4. As shown in FIG. 5, the method further includes: after step 402:

403. The base station to which the second cell belongs receives the overload notification sent by the base station to which the target cell belongs, where the overload notification is that the base station to which the target cell belongs cannot perform the target after performing the noise floor lifting process on the target cell. Sent when any user in the cell.

404. The base station to which the second cell belongs sends the first uplink transmit power control indication to the at least one target user of the cell edge user according to the overload notification, to indicate that the at least one target user decreases the uplink transmit power, and continues. Go to step 405.

405. The uplink interference power information generated by the cell edge user scheduled to be in the spectrum resource unit in the second cell to the target cell is obtained, and the uplink interference power information is sent to the target cell. Affiliated base station.

Further, the base station to which the target cell belongs performs base noise lifting processing on the target cell according to the uplink interference power information, which may cause the base noise level of the target cell to be high due to the noise floor rise, and the base station to which the target cell belongs cannot be scheduled. Any user in the target cell (equivalent to the saturated capacity of the target cell). Based on this, when the base station to which the target cell belongs determines that any user in the target cell cannot be scheduled due to the noise floor rise, since the base station to which the target cell belongs has learned that the part of the noise floor rises the interference power from the second cell, The base station to which the target cell belongs may An overload notification is sent by the associated RNC to the base station to which the second cell belongs. According to the overload notification, the base station to which the second cell belongs determines that at least one cell edge user is the target user from the cell edge users scheduled to be in the spectrum resource unit of the first cell shared by the target cell, and sends the first uplink to the at least one target user. Transmitting power control indications to indicate that at least one target user is gradually reducing its transmit power. The base station to which the second cell belongs may preferentially select a user with a large transmit power as the target user according to the size of the transmit power of the edge user of each cell.

In this way, since the uplink transmit power of the cell edge user in the spectrum resource unit of the first cell shared by the target cell in the second cell is reduced, the uplink interference power information generated by the second cell to the target cell may also be changed. Based on this, the base station to which the second cell belongs continues to step 405. That is, the base station to which the second cell belongs re-acquires the uplink interference power information generated by the cell edge user in the spectrum resource unit of the first cell shared by the target cell in the second cell, and sends the obtained uplink interference power information. The base station to which the target cell belongs is configured to perform base noise lifting processing on the target cell according to the acquired uplink interference power information.

Further, as shown in FIG. 5, after the step 405, the method further includes:

406. The base station to which the second cell belongs receives an overload release notification sent by the base station to which the target cell belongs, where the overload cancellation notification is sent by the base station to which the target cell belongs when the user in the target cell can be scheduled.

407. The base station to which the second cell belongs sends a second uplink transmit power control indication to the at least one target user according to the overload release notification, to instruct the at least one target user to stop reducing the uplink transmit power.

Further, when the base station to which the target cell belongs determines that the user in the target cell can be scheduled, the base station to which the target cell belongs sends an overload release notification to the base station to which the second cell belongs by the associated RNC. In this way, the base station to which the second cell belongs receives the overload release notification sent by the base station to which the target cell belongs, and sends a second uplink transmit power control indication to the at least one target user according to the overload release notification, to indicate that the at least one target UE stops reducing the uplink transmit power. .

It can be seen that the target cell in the second communication system shares the spectrum resource of the first cell in the first communication system, and the second cell in the first communication system uses the same spectrum resource as the first cell and is adjacent to the first cell. Then, the second cell between the first communication systems generates co-channel interference to the target cell in the second communication system. In this scenario, the base station to which the second cell belongs acquires the cell edge UE that is scheduled on the spectrum resource unit of the first cell shared by the target cell in the second cell to the target cell. The generated uplink interference power information is sent to the base station to which the target cell belongs, so that the base station to which the target cell belongs is used as the contribution value of the second cell to the receiver noise of the target cell, and the bottom noise lifting process is performed on the target cell. To achieve coordination of co-channel interference between different systems, so that the scheduling of the cell-edge users of the second cell minimizes the impact on the operational capacity of the target cell, thereby improving the efficiency of using the spectrum resources. In addition, the base station to which the second cell belongs suppresses the uplink transmit power of some or all cell edge users according to the overload notification and the overload release notification sent by the base station to which the target cell belongs, and ensures normal scheduling of users in the target cell.

FIG. 6 is a schematic structural diagram of a base station according to an embodiment of the present invention. The base station belongs to the second communication system and covers the target cell in the second communication system, and the target cell shares the spectrum resource of the first cell in the first communication system. As shown in FIG. 6, the base station includes: an obtaining module 61 and a processing module 62.

The obtaining module 61 is configured to acquire uplink interference power information generated by the cell edge user scheduled to be in the spectrum resource unit corresponding to the spectrum resource in the second cell, where the second cell is the first communication A neighboring cell of the first cell that uses the same spectrum resource as the first cell in the system.

The processing module 62 is connected to the acquiring module 61, and configured to use the uplink interference power information acquired by the acquiring module 61 as a contribution value of the second cell to a receiver noise of the target cell, and perform the target cell The noise floor lifting process is implemented to achieve coordinated control of co-channel interference between different systems.

In an optional implementation, the uplink interference power information includes uplink transmit power of at least one or each of the cell edge users calculated by the base station to which the second cell belongs within a specified time period. Based on this, the obtaining module 61 is specifically configured to receive uplink transmit power of at least one or each of the cell edge users sent by the base station to which the second cell belongs, within a specified time.

The specified period of time may be a period of time before the at least one or each of the cell edge users in the specified time period is calculated by the base station to which the second cell belongs; The uplink transmit power is calculated by the base station to which the second cell belongs according to the expected uplink received power of the second cell and the path loss information of the cell edge user in the specified time period. Or the specified period of time may be a period of time after the at least one or each of the cell edge users in the specified time period is calculated by the base station to which the second cell belongs; The uplink transmit power is owned by the second cell The base station is pre-estimated according to an internal scheduling algorithm.

In an optional implementation, the obtaining module 61 is specifically configured to receive uplink transmit power reported by at least one or each of the cell edge users, and use the uplink transmit power of the at least one or each of the cell edge users as the Uplink interference power information.

In an optional implementation, the obtaining module 61 is specifically configured to receive measurement information reported by the at least one or each of the cell edge users, and calculate at least one according to the measurement information reported by the at least one or each of the cell edge users. Or the path loss information of each of the cell edge users, determining uplink transmit power of each of the cell edge users according to path loss information of at least one or each of the cell edge users, at least one or each of the cells The uplink transmit power of the edge user is used as the uplink interference power information.

The above measurement information may include an energy interference ratio or a received signal code power.

In an optional implementation manner, the uplink interference power information is that the base station to which the second cell belongs normalizes or averages uplink transmit power of at least one or each of the cell edge users in a specified time period. The result after processing. Based on this, the obtaining module 61 is specifically configured to receive, after the base station to which the second cell belongs, perform normalization or equalization processing on uplink transmit power of at least one or each of the cell edge users in a specified time period. result.

In an optional implementation manner, as shown in FIG. 7, the base station further includes: a scheduling module 63 and a sending module 64.

The scheduling module 63 is configured to schedule users in the target cell.

The sending module 64 is connected to the obtaining module 61, the processing module 62, and the scheduling module 63, and after the processing module 62 performs the noise floor lifting process on the target cell, the scheduling module 63 cannot schedule any user in the target cell. Sending an overload notification to the base station to which the second cell belongs, and notifying the base station to which the second cell belongs to send a first uplink transmit power control indication to at least one target user in the cell edge user, to indicate the at least A target user reduces the uplink transmit power.

Further, the sending module 64 is further configured to: after the sending the overload notification, trigger the obtaining module 61 and the processing module 62 to perform the corresponding operations again, until the scheduling module 63 can schedule the users in the target cell. Correspondingly, the obtaining module 61, after being triggered by the sending module 64, continues to acquire the uplink interference power information generated by the cell edge user scheduled to be in the spectrum resource unit in the second cell to the target cell, because the cell edge user At least one target user's uplink transmit function The rate is reduced, so the uplink interference power information acquired by the acquisition module 61 at this time changes with the previous acquisition. Similarly, the processing module 62 continues to use the uplink interference power information acquired by the obtaining module 61 as the contribution value of the second cell to the receiver noise of the target cell, under the trigger of the sending module 64. The target cell performs a noise floor lifting process until the scheduling module 63 can schedule the users in the target cell after the processing module 62 performs the noise floor lifting process on the target cell.

Further, the sending module 64 is further configured to: when the scheduling module 63 can schedule the user in the target cell, send an overload cancellation notification to the base station to which the second cell belongs, and notify the base station to which the second cell belongs The at least one target user sends a second uplink transmit power control indication to instruct the at least one target user to stop reducing the uplink transmit power.

Optionally, the foregoing first communications system may be an LTE system, and the second communications system may be

UMTS

The function modules of the base station provided in this embodiment can be used to perform the process of the method embodiment shown in FIG. 2 and FIG. 3, and the specific working principle is not described here. For details, refer to the description of the method embodiment.

In the base station provided by the embodiment, the target cell in the second communication system shares the frequency resource of the first cell in the first communication system, and the second cell in the first communication system generates the same cell interference in the first cell. In a scenario in which the target cell in the communication system generates the same-frequency interference, the uplink interference power information generated by the cell edge user scheduled to be in the spectrum resource unit in the second cell to the target cell is obtained, and the obtained uplink interference power information is used as the uplink interference power information. The contribution value of the second cell to the receiver noise of the target cell is performed, and the bottom noise lifting process is performed on the target cell to implement coordinated control of co-channel interference between different systems, and the problem of co-channel interference between different system cells is solved. Further, the base station provided in this embodiment further ensures normal scheduling of users in the target cell by sending an overload notification and an overload cancellation notification to the base station to which the second cell belongs.

FIG. 8 is a schematic structural diagram of still another base station according to an embodiment of the present invention. The base station belongs to the second communication system and covers the target cell in the second communication system, and the target cell shares the spectrum resource of the first cell in the first communication system. As shown in FIG. 8, the base station includes: a memory 81 and a processor 82.

The memory 81 is used to store a program. In particular, the program can include program code, the program code including computer operating instructions.

The memory 81 may include a high speed RAM memory, and may also include a non-volatile memory such as at least one disk memory. The processor 82 is configured to execute the program stored in the memory 81, to: obtain uplink interference power information generated by the cell edge user scheduled to be in the spectrum resource unit corresponding to the spectrum resource in the second cell to the target cell And using the uplink interference power information as a contribution value of the second cell to a receiver noise of the target cell, performing a noise floor lifting process on the target cell, so as to achieve co-channel interference between different systems. Coordinating control; wherein the second cell is a neighboring cell of the first cell in the first communication system that uses the same spectrum resource as the first cell.

The processor 82 may be a central processing unit (CPU), or an application specific integrated circuit (ASIC), or one or more configured to implement the embodiments of the present invention. integrated circuit.

Further, as shown in FIG. 8, the base station further includes: a receiver 83.

In an optional implementation, the uplink interference power information includes uplink transmit power of at least one or each of the cell edge users calculated by the base station to which the second cell belongs within a specified time period.

Based on this, the receiver 83 is configured to receive uplink transmit power of at least one or each of the cell edge users sent by the base station to which the second cell belongs, within a specified time. Correspondingly, the processor 82 is configured to acquire uplink interference power information generated by the cell edge user scheduled to be in the spectrum resource unit in the second cell to the target cell, where the processor 82 is specifically configured to acquire the receiver 83. At least one or each of the cell edge users has an uplink transmit power for a specified time.

The specified period of time may be a period of time before the at least one or each of the cell edge users in the specified time period is calculated by the base station to which the second cell belongs; The uplink transmit power is calculated by the base station to which the second cell belongs according to the expected uplink received power of the second cell and the path loss information of the cell edge user in the specified time period. Or the specified period of time may be a period of time after the at least one or each of the cell edge users in the specified time period is calculated by the base station to which the second cell belongs; The uplink transmit power is pre-estimated by the base station to which the second cell belongs according to an internal scheduling algorithm.

In an optional implementation, the receiver 83 is configured to receive uplink transmit power reported by each of the at least one or each of the cell edge users. Based on this, the processor 82 is configured to acquire uplink interference power information generated by the cell edge user scheduled to be in the spectrum resource unit in the second cell to the target cell, where the processor 82 is specifically configured to receive the receiver 82. At least one or each In an optional implementation, the receiver 83 is configured to receive measurement information reported by at least one or each of the cell edge users. Based on this, the processor 82 is configured to acquire uplink interference power information generated by the cell edge user scheduled to be in the spectrum resource unit in the second cell to the target cell, where the processor 82 is specifically configured to receive according to the receiver 82. Calculating at least one or each of the cell edge user's path loss information, calculating path loss information of at least one or each of the cell edge users, determining at least one according to at least one or each of the cell edge user path loss information Or the uplink transmit power of each of the cell edge users, and the uplink transmit power of at least one or each of the cell edge users is used as the uplink interference power information.

In an optional implementation manner, the uplink interference power information is that the base station to which the second cell belongs normalizes or averages uplink transmit power of at least one or each of the cell edge users in a specified time period. The result after processing.

Based on this, the receiver 83 may be configured to receive, after the base station to which the second cell belongs, normalize or average the uplink transmit power of at least one or each of the cell edge users in a specified time period. result. Correspondingly, the processor 82 is configured to acquire uplink interference power information generated by the cell edge user scheduled to be in the spectrum resource unit in the second cell to the target cell, where the processor 82 is specifically configured to obtain the receiver 83 for receiving The result of normalizing or averaging the uplink transmit power of the at least one or each of the cell edge users in the specified time period sent by the base station to which the second cell belongs.

Further, as shown in FIG. 8, the base station further includes: a scheduler 84 and a transmitter 85.

A scheduler 84 is configured to schedule users in the target cell.

The transmitter 85 is configured to send an overload notification to the base station to which the second cell belongs when the scheduler 84 is unable to schedule any user in the target cell after the processor 82 performs the noise floor lifting process on the target cell. And notifying the base station to which the second cell belongs to send the first uplink transmit power control indication to the at least one target user of the cell edge user, to instruct the at least one target user to decrease the uplink transmit power.

Further, the transmitter 85 is further configured to: after transmitting the overload notification, trigger the processor 82 to perform the corresponding operation again until the scheduler 84 can schedule the user in the target cell.

Further optionally, the transmitter 85 is further configured to: in the target unit, the scheduler 84 can schedule Sending an overload release notification to the base station to which the second cell belongs, and notifying the base station to which the second cell belongs to send the second uplink transmit power control indication to the at least one target user, to indicate the at least one target The user stops reducing the uplink transmit power.

Optionally, the first communications system is an LTE system, and the second communications system is a UMTS. Optionally, in a specific implementation, if the memory 81, the processor 82, the receiver 83, the scheduler 84, and the transmitter 85 are implemented independently, the memory 81, the processor 82, the receiver 83, the scheduler 84, and the transmitter 85 It is possible to connect to each other through a bus and complete communication with each other. The bus may be an Industry Standard Architecture (ISA) bus, a Peripheral Component (PCI) bus, or an Extended Industry Standard Architecture (EISA) bus. Wait. The bus can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is shown in Figure 8, but it does not mean that there is only one bus or one type of bus.

Optionally, in a specific implementation, if the memory 81, the processor 82, the receiver 83, the scheduler 84, and the transmitter 85 are integrated on one chip, the memory 81, the processor 82, the receiver 83, and the scheduler 84 are implemented. And the transmitter 85 can perform the same communication through the internal interface.

The base station provided in this embodiment can be used to perform the process of the method embodiment shown in FIG. 2 and FIG. 3, and the specific working principle is not described here. For details, refer to the description of the method embodiment.

In the base station provided by the embodiment, the target cell in the second communication system shares the spectrum resource of the first cell in the first communication system, and the second cell in the first communication system generates the same cell interference in the first cell to the second cell. In the scenario where the target cell in the system generates the same-frequency interference, the uplink interference power information generated by the cell edge user scheduled to be in the spectrum resource unit in the second cell to the target cell is obtained, and the acquired uplink interference power information is used as the first The contribution of the second cell to the receiver noise of the target cell is performed on the target cell to perform coordinated noise control on the target cell to achieve coordinated control of co-channel interference between different systems, and solve the problem of co-channel interference between different system cells. Further, the base station provided in this embodiment further ensures normal scheduling of users in the target cell by sending an overload notification and an overload cancellation notification to the base station to which the second cell belongs.

FIG. 9 is a schematic structural diagram of still another base station according to an embodiment of the present invention. The base station belongs to the first communication system and covers the second cell in the first communication system, where the second cell is a cell that is adjacent to the first cell in the first communication system and uses the same spectrum resource. The target cell in the second communication system shares the spectrum resource of the first cell. As shown in FIG. 9, the base station includes: The module 901 and the sending module 902 are obtained.

The obtaining module 901 is configured to acquire uplink interference power information generated by the cell edge user scheduled to be in the spectrum resource unit corresponding to the spectrum resource in the second cell to the target cell.

The sending module 902 is connected to the acquiring module 901, and configured to send the uplink interference power information acquired by the acquiring module 901 to the base station to which the target cell belongs, where the uplink interference power information is used as the second cell to the target The receiver bottom noise contribution value of the cell is used by the base station to which the target cell belongs to perform base noise lifting processing on the target cell, so as to implement coordinated control of co-channel interference between different system cells.

In an optional implementation, the obtaining module 901 is specifically configured to calculate an uplink transmit power of at least one or each of the cell edge users for a specified time period, at least one or each of the small messages. "

In an optional implementation, the obtaining module 901 is specifically configured to calculate uplink transmit power of at least one or each of the cell edge users in a specified time period, where the at least one or each of the cell edge users is in the specified The uplink transmit power in the time period is normalized or averaged, and the processed result is used as the uplink interference power information.

Optionally, the specified time period in the foregoing embodiment may be that the acquiring module calculates a period of time before at least one or each of the cell edge users is in uplink transmit power within the specified time period. Based on this, the obtaining module 901 is configured to calculate the uplink transmit power of the at least one or each of the cell edge users in the specified time period, and the method includes: the obtaining module 901 is specifically configured to: according to the expected uplink receive power of the second cell, and at least The path loss information of the at least one or each of the cell edge users in the specified time period is calculated by the path loss information of the one or each of the cell edge users in the specified time period. Or

The specified time period in the foregoing embodiment may be that the acquiring module calculates a period of time after at least one or each of the cell edge users is in uplink transmit power within the specified time period. Based on this, the obtaining module 901 is configured to calculate the uplink transmit power of the at least one or each of the cell edge users in the specified time period, and the method includes: the obtaining module 901 is specifically configured to pre-estimate at least one or each according to an internal scheduling algorithm. The uplink transmit power of the cell edge user in the specified time period.

In an optional implementation manner, as shown in FIG. 10, the base station further includes: a receiving module 903. The receiving module 903 is connected to the sending module 902, and configured to: after the transmitting module 902 sends the uplink interference power information, receive an overload notification sent by the base station to which the target cell belongs, where the overload notification is a base station to which the target cell belongs. Transmitted when any user in the target cell cannot be scheduled after the bottom noise lifting process is performed on the target cell.

Based on the overload notification received by the receiving module 903, the transmitting module 902 is further configured to receive the receiving module.

903. The overload notification received, sending a first uplink transmit power control indication to at least one target user of the cell edge user, to instruct the at least one target user to decrease uplink transmit power.

Further, the sending module 902 is further configured to: after the sending the first uplink transmit power control indication, trigger the acquiring module 901 and the sending module 902 to continue to perform corresponding operations.

Further, the receiving module 903 is further configured to receive an overload cancellation notification sent by the base station to which the target cell belongs, where the overload cancellation notification is sent by the base station to which the target cell belongs when the user in the target cell can be scheduled. of.

The sending module 902 is further configured to send a second uplink transmit power control indication to the at least one target user according to the overload release notification received by the receiving module 903, to indicate the at least one The target user stops reducing the uplink transmit power.

Optionally, the first communication system may be an LTE system, and the second communication system may be a UMTS

The function modules of the base station provided in this embodiment can be used to perform the process of the method embodiment shown in FIG. 4 and FIG. 5, and the specific working principle is not described here. For details, refer to the process of the method embodiment.

In the base station provided by the embodiment, the target cell in the second communication system shares the spectrum resource of the first cell in the first communication system, and the second cell in the first communication system generates the same cell interference in the first cell to the second cell. In the scenario where the target cell in the system generates the same-frequency interference, the cell edge UE that is scheduled to be in the spectrum resource unit of the first cell shared by the target cell in the second cell sends the uplink interference power information generated by the target cell to the target. The base station to which the cell belongs is configured to enable the base station to which the target cell belongs to use the uplink interference work information as the contribution value of the second cell to the receiver noise of the target cell, and perform a noise floor lifting process on the target cell to achieve the same The coordination of the frequency interference minimizes the influence of the scheduling of the cell edge user on the operating capacity of the target cell by the second cell, thereby improving the use efficiency of the spectrum resource.

FIG. 11 is a schematic structural diagram of still another base station according to an embodiment of the present invention. The base station belongs to the a communication system and covering a second cell in the first communication system, the second cell being a cell adjacent to the first cell in the first communication system and using the same spectrum resource, in the second communication system The target cell shares the spectrum resource of the first cell. As shown in FIG. 11, the base station includes: a memory 1101, a processor 1102, and a transmitter 1103.

The memory 1101 is used to store a program. In particular, the program can include program code, the program code including computer operating instructions.

The memory 1101 may include a high speed RAM memory, and may also include a non-volatile memory such as at least one disk memory.

The processor 1102 is configured to execute a program stored in the memory 1101, to: acquire uplink interference generated by a cell edge user scheduled to be in a spectrum resource unit corresponding to the spectrum resource in the second cell to the target cell Power information.

Processor 1102 can be a CPU, or a specific ASIC, or one or more integrated circuits configured to implement embodiments of the present invention.

The transmitter 1103 is configured to send the uplink interference power information to a base station to which the target cell belongs, so that the base station to which the target cell belongs, the uplink interference power information is used as the second cell to the target cell. The contribution value of the receiver bottom noise is subjected to a noise floor lifting process for the target cell to achieve coordinated control of co-channel interference between different systems.

In an optional implementation, the processor 1102 is specifically configured to calculate uplink transmit power of at least one or each of the cell edge users in a specified time period, and at least one or each of the cells is in an optional implementation manner. The processor 1102 is specifically configured to calculate uplink transmit power of at least one or each of the cell edge users in a specified time period, and uplink transmit to the at least one or each of the cell edge users in the specified time period. The power is normalized or averaged, and the processed result is used as the uplink interference power information.

The specified time period in the foregoing embodiment may be that the processor 1102 calculates a period of time before the uplink transmit power of the at least one or each of the cell edge users in the specified time period. Based on this, the processor 1102 is configured to calculate the uplink transmit power of the at least one or each of the cell edge users in the specified time period, where the processor 1102 is specifically configured to: according to the expected uplink receive power of the second cell, and at least Calculating, by the one or each of the cell edge users, the path loss information in the specified time period, calculating at least one or each of the cell edge users in the specified time period Uplink transmit power. or,

The specified time period in the above embodiment may be a period of time after the processor 11102 calculates the uplink transmit power of each of the cell edge users within the specified time period. Based on this, the processor 1102 is configured to calculate uplink transmit power of the at least one or each of the cell edge users in a specified time period, and the method includes: the processor 1102 is specifically configured to pre-estimate at least one or each according to an internal scheduling algorithm. The uplink transmit power of the cell edge user in the specified time period.

Further, as shown in FIG. 11, the base station further includes: a receiver 1104.

The receiver 1104 is configured to: after the transmitter 1103 sends the uplink interference power information, receive an overload notification sent by the base station to which the target cell belongs, where the overload notification is that the base station to which the target cell belongs is in the target cell Sent when any user in the target cell cannot be scheduled after performing the noise floor lifting process.

Based on this, the transmitter 1103 is further configured to send, according to the overload notification received by the receiver 1104, a first uplink transmit power control indication to at least one target user of the cell edge users, to indicate that the at least one target user is lowered. Uplink transmit power.

Further, the transmitter 1103 is further configured to: after the sending the first uplink transmit power control indication, the trigger processor 1102 and the transmitter 1103 themselves continue to perform corresponding operations.

Further, the receiver 1103 is further configured to receive an overload cancellation notification sent by the base station to which the target cell belongs, where the overload cancellation notification is sent by the base station to which the target cell belongs when the user in the target cell can be scheduled. of.

The transmitter 1103 is further configured to send, according to the overload cancellation notification received by the receiver 1103, a second uplink transmit power control indication to the at least one target user, to indicate that the at least one target user stops reducing the uplink transmit power.

Optionally, in a specific implementation, if the memory 1101, the processor 1102, the transmitter 1103, and the receiver 1104 are implemented independently, the memory 1101, the processor 1102, the transmitter 1103, and the receiver 1104 may be connected to each other through a bus and complete each other. Communication between. The bus can be an ISA bus, a PCI bus, or an EISA bus. The bus can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is shown in Figure 11, but it does not mean that there is only one bus or one type of bus. Optionally, in a specific implementation, if the memory 1101, the processor 1102, the transmitter 1103, and the receiver 1104 are integrated on one chip, the memory 1101, the processor 1102, the transmitter 1103, and the receiver 1104 may pass through an internal interface. Complete the same communication.

The base station provided in this embodiment can be used to perform the process of the method embodiment shown in FIG. 4 and FIG. 5. The specific working principle is not described here. For details, refer to the process of the method embodiment.

A person skilled in the art can understand that all or part of the steps of implementing the above method embodiments may be completed by using hardware related to program instructions, and the foregoing program may be stored in a computer readable storage medium, and the program is executed when executed. The method includes the steps of the foregoing method embodiments; and the foregoing storage medium includes: a medium that can store program codes, such as a ROM, a RAM, a magnetic disk, or an optical disk.

Finally, it should be noted that the above embodiments are only for explaining the technical solutions of the present invention, and are not intended to be limiting thereof; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that The technical solutions described in the foregoing embodiments may be modified, or some or all of the technical features may be equivalently replaced; and the modifications or substitutions do not deviate from the technical solutions of the embodiments of the present invention. range.

Claims

claims

1. A method for co-channel interference coordination between cells in different systems, characterized in that the target cell in the second communication system shares the spectrum resources of the first cell in the first communication system. The method includes: the target cell to which the target cell belongs The base station obtains the uplink interference power information generated by the cell edge users scheduled on the spectrum resource unit corresponding to the spectrum resource in the second cell to the target cell; the second cell is the same as that in the first communication system. Neighboring cells of the first cell that use the same spectrum resources for the first cell;

The base station to which the target cell belongs uses the uplink interference power information as the contribution value of the second cell to the receiver noise floor of the target cell, and performs noise floor raising processing on the target cell to achieve communication with different systems. Coordinated control of inter-cell co-channel interference.

2. The method according to claim 1, characterized in that, the uplink interference power information includes the uplink transmission power of at least one of the cell edge users within a specified time period calculated by the base station to which the second cell belongs. ;

The base station to which the target cell belongs obtains the uplink interference power information generated by the cell edge users scheduled on the spectrum resource unit corresponding to the spectrum resource in the second cell to the target cell, including:

The base station to which the target cell belongs receives the uplink transmit power of at least one cell edge user within a specified time period sent by the base station to which the second cell belongs.

3. The method according to claim 2, characterized in that, the designated time period is before the base station to which the second cell belongs calculates the uplink transmit power of at least one of the cell edge users in the designated time period. A period of time; The uplink transmit power of the cell edge user is determined by the base station to which the second cell belongs based on the expected uplink received power of the second cell and the path loss information of the cell edge user within the specified time period. calculated; or

The designated time period is a period of time after the base station to which the second cell belongs calculates the uplink transmission power of at least one of the cell edge users in the designated time period; the uplink transmission power of the cell edge user is calculated by the The base station to which the second cell belongs is estimated in advance based on the internal scheduling algorithm.

4. The method according to claim 1, characterized in that, the base station to which the target cell belongs obtains the information generated by the cell edge users in the second cell scheduled on the spectrum resource unit corresponding to the spectrum resource to the target cell. Uplink interference power information, including: The base station to which the target cell belongs receives the uplink transmit power reported by each of at least one of the cell edge users, and uses the uplink transmit power of at least one of the cell edge users as the uplink interference power information.

5. The method according to claim 1, characterized in that, the base station to which the target cell belongs obtains the information generated by the cell edge users in the second cell scheduled on the spectrum resource unit corresponding to the spectrum resource to the target cell. Uplink interference power information, including:

The base station to which the target cell belongs receives the measurement information reported by at least one of the cell edge users;

The base station to which the target cell belongs calculates path loss information of at least one cell edge user based on measurement information reported by at least one cell edge user, and determines at least one of the cell edge users based on the path loss information of at least one cell edge user. The uplink transmit power of cell edge users will be at least

6. The method according to claim 5, characterized in that the measurement information includes energy-to-interference ratio or received signal code power.

7. The method according to claim 1, wherein the uplink interference power information is the normalization of the uplink transmission power of at least one of the cell edge users within a specified time period by the base station to which the second cell belongs. The result after normalization or averaging;

The base station to which the target cell belongs receives the result of normalization or averaging of the uplink transmit power of at least one of the cell edge users within a specified time period sent by the base station to which the second cell belongs.

8. The method according to any one of claims 1 to 7, characterized in that the base station to which the target cell belongs uses the uplink interference power information as the receiver noise floor of the second cell to the target cell. The contribution value of , after performing noise floor lifting processing on the target cell, also includes:

If the base station to which the target cell belongs cannot schedule any user in the target cell, an overload notification is sent to the base station to which the second cell belongs, and the base station to which the second cell belongs is notified to send the overload notification to the edge users of the cell. At least one target user sends a first uplink transmission power control instruction to instruct the at least one target user to reduce the uplink transmission power.

9. The method according to claim 8, characterized in that, after the base station to which the target cell belongs sends an overload notification to the base station to which the second cell belongs, it further includes:

The base station to which the target cell belongs re-executes obtaining the uplink interference power information generated by the cell edge user scheduled on the spectrum resource unit in the second cell to the target cell, and converts the uplink interference power The information is used as the contribution value of the second cell to the receiver noise floor of the target cell, and the noise floor raising process is performed on the target cell until the base station to which the target cell belongs can schedule the base station in the target cell. users.

10. The method according to claim 9, further comprising:

When the base station to which the target cell belongs can schedule users in the target cell, the base station to which the target cell belongs sends an overload relief notification to the base station to which the second cell belongs, notifying the base station to which the second cell belongs. The at least one target user sends a second uplink transmission power control instruction to instruct the at least one target user to stop reducing the uplink transmission power.

11. The method according to any one of claims 1 to 10, characterized in that the first communication system is a long-term evolution LTE system, and the second communication system is a universal mobile communication system UMTS.

12. A method for co-channel interference coordination between cells in different systems, characterized in that the target cell in the second communication system shares the spectrum resources of the first cell in the first communication system. The method includes: The base station obtains the uplink interference power information generated by the cell edge users scheduled on the spectrum resource unit corresponding to the spectrum resource in the second cell to the target cell; the second cell is the same in the first communication system as Neighboring cells of the first cell that use the same spectrum resources for the first cell;

The base station to which the second cell belongs sends the uplink interference power information to the base station to which the target cell belongs, and the uplink interference power information serves as the contribution value of the second cell to the receiver noise floor of the target cell. , used for the base station to which the target cell belongs to perform noise floor raising processing on the target cell to achieve coordinated control of co-channel interference between cells of different systems.

13. The method according to claim 12, characterized in that, the base station to which the second cell belongs obtains the response of the cell edge users scheduled in the second cell on the spectrum resource unit corresponding to the spectrum resource to the target. The uplink interference power information generated by the cell includes:

The base station to which the second cell belongs calculates the uplink transmission power of at least one of the cell edge users within a specified time period, and uses the uplink transmission power of at least one of the cell edge users within the specified time period as the uplink interference. Power information.

14. The method according to claim 12, characterized in that, the base station to which the second cell belongs obtains the response of the cell edge users scheduled in the second cell on the spectrum resource unit corresponding to the spectrum resource to the target. The uplink interference power information generated by the cell includes:

The base station to which the second cell belongs calculates the uplink transmit power of at least one of the cell edge users within a specified time period;

The base station to which the second cell belongs performs normalization or averaging processing on the uplink transmission power of at least one of the cell edge users within the specified time period, and uses the processed result as the uplink interference power information.

15. The method according to claim 13 or 14, characterized in that, the designated time period is for the base station to which the second cell belongs to calculate the uplink transmit power of at least one of the cell edge users in the designated time period. some time before;

The base station to which the second cell belongs calculates the uplink transmit power of at least one of the cell edge users within a specified time period, including:

The base station to which the second cell belongs calculates, based on the expected uplink received power of the second cell and the path loss information of at least one of the cell edge users in the specified time period, at least one of the cell edge users in the specified time period. Uplink transmit power in a specified time period; or

The designated time period is a period of time after the base station to which the second cell belongs calculates the uplink transmit power of at least one of the cell edge users in the designated time period;

The base station to which the second cell belongs pre-estimates the uplink transmit power of at least one cell edge user within the specified time period based on an internal scheduling algorithm.

16. The method according to any one of claims 12 to 15, characterized in that, after the base station to which the second cell belongs sends the uplink interference power information to the base station to which the target cell belongs, it further includes:

The base station to which the second cell belongs receives an overload notification sent by the base station to which the target cell belongs. The overload notification is that the base station to which the target cell belongs cannot schedule the target after performing noise floor raising processing on the target cell. Sent by any user in the community;

The base station to which the second cell belongs sends a first uplink transmit power control indication to at least one target user among the cell edge users according to the overload notification to indicate the at least one target user. The target user reduces the uplink transmit power.

17. The method according to claim 16, characterized in that, after the base station to which the second cell belongs sends the first uplink transmit power control indication to at least one target user among the cell edge users, it further includes:

The base station to which the second cell belongs continues to obtain the uplink interference power information generated by the cell edge user scheduled on the spectrum resource unit in the second cell to the target cell, and converts the uplink interference power information to the target cell. The operation of sending power information to the base station to which the target cell belongs.

18. The method according to claim 17, further comprising:

The base station to which the second cell belongs receives an overload relief notification sent by the base station to which the target cell belongs. The overload relief notification is sent by the base station to which the target cell belongs when it can schedule users in the target cell;

The base station to which the second cell belongs sends a second uplink transmission power control instruction to the at least one target user according to the overload relief notification to instruct the at least one target user to stop reducing the uplink transmission power.

19. The method according to any one of claims 12 to 18, characterized in that the first communication system is a long-term evolution LTE system, and the second communication system is a universal mobile communication system UMTS.

20. A base station, characterized in that it belongs to a second communication system and covers a target cell in the second communication system, and the target cell shares the spectrum resources of the first cell in the first communication system, and the base station includes:

An acquisition module, configured to acquire uplink interference power information on the target cell caused by cell edge users scheduled on the spectrum resource unit corresponding to the spectrum resource in the second cell; the second cell is the first communication system Neighboring cells of the first cell that use the same spectrum resources as the first cell;

A processing module, configured to use the uplink interference power information obtained by the acquisition module as the contribution value of the second cell to the receiver noise floor of the target cell, and perform noise floor lifting processing on the target cell, so as to Achieve coordinated control of co-channel interference between cells in different systems.

21. The base station according to claim 20, wherein the uplink interference power information includes the uplink transmission power of at least one of the cell edge users within a specified time period calculated by the base station to which the second cell belongs. ;

The acquisition module is specifically configured to receive at least one message sent by the base station to which the second cell belongs. The uplink transmit power of the cell edge users in the specified time period.

22. The base station according to claim 21, characterized in that, the designated time period is before the base station to which the second cell belongs calculates the uplink transmit power of at least one of the cell edge users in the designated time period. A period of time; The uplink transmit power of the cell edge user is determined by the base station to which the second cell belongs based on the expected uplink received power of the second cell and the path loss information of the cell edge user within the specified time period. calculated; or

The designated time period is a period of time after the base station to which the second cell belongs calculates the uplink transmission power of at least one of the cell edge users in the designated time period; the uplink transmission power of the cell edge user is determined by the The base station to which the second cell belongs is estimated in advance based on the internal scheduling algorithm.

23. The base station according to claim 20, characterized in that the acquisition module is specifically configured to receive the uplink transmit power reported by at least one of the cell edge users, and convert at least one of the

24. The base station according to claim 20, characterized in that, the acquisition module is specifically configured to receive measurement information reported by at least one of the cell edge users, based on the measurement information of "¾" on at least one of the cell edge users. , calculate the path loss information of at least one of the cell edge users, determine the uplink transmission power of at least one of the cell edge users according to the path loss information of at least one of the cell edge users, and convert the uplink transmission power of at least one of the cell edge users into power as the uplink interference power information.

25. The base station according to claim 24, wherein the measurement information includes energy-to-interference ratio or received signal code power.

26. The base station according to claim 20, wherein the uplink interference power information is the normalization of the uplink transmission power of at least one of the cell edge users within a specified time period by the base station to which the second cell belongs. The result after normalization or averaging;

The acquisition module is specifically configured to receive a result of normalization or averaging of the uplink transmission power of at least one cell edge user within a specified time period sent by the base station to which the second cell belongs.

27. The base station according to any one of claims 20 to 26, further comprising: a scheduling module, configured to schedule users in the target cell;

A sending module configured to, after the processing module performs noise floor lifting processing on the target cell, When the scheduling module cannot schedule any user in the target cell, an overload notification is sent to the base station to which the second cell belongs, and the base station to which the second cell belongs is notified to at least one target among the edge users of the cell. The user sends a first uplink transmission power control instruction to instruct the at least one target user to reduce the uplink transmission power.

28. The base station according to claim 27, characterized in that, after sending the overload notification, the sending module is further configured to trigger the obtaining module and the processing module to re-perform corresponding operations until the scheduling module until users in the target cell can be scheduled.

29. The base station according to claim 28, wherein the sending module is further configured to send an overload release message to the base station to which the second cell belongs when the scheduling module can schedule users in the target cell. Notify, notify the base station to which the second cell belongs to send a second uplink transmission power control instruction to the at least one target user to instruct the at least one target user to stop reducing the uplink transmission power.

30. The base station according to any one of claims 20 to 29, characterized in that the first communication system is a long-term evolution LTE system, and the second communication system is a universal mobile communication system UMTS.

31. A base station, characterized in that it belongs to a first communication system and covers a second cell in the first communication system, and the second cell is adjacent to the first cell in the first communication system and Cells using the same spectrum resources, the target cell in the second communication system shares the spectrum resources of the first cell; the base station includes:

An acquisition module, configured to acquire the uplink interference power information generated by cell edge users in the second cell scheduled on the spectrum resource unit corresponding to the spectrum resource to the target cell;

A sending module, configured to send the uplink interference power information obtained by the acquisition module to the base station to which the target cell belongs, and use the uplink interference power information as the receiver noise floor of the second cell for the target cell. The contribution value is used by the base station to which the target cell belongs to perform noise floor raising processing on the target cell to achieve coordinated control of co-channel interference between cells of different systems.

32. The base station according to claim 31, characterized in that the acquisition module is specifically configured to calculate the uplink transmission power of at least one of the cell edge users within a specified time period, and obtain at least one piece of power information.

33. The base station according to claim 31, characterized in that, the acquisition module is specifically configured to calculate the uplink transmission power of at least one of the cell edge users within a specified time period, for at least one The uplink transmit power of each of the cell edge users within the specified time period is normalized or averaged, and the processed result is used as the uplink interference power information.

34. The base station according to claim 32 or 33, wherein the designated time period is a period of time before the acquisition module calculates the uplink transmission power of at least one of the cell edge users in the designated time period. ;

The acquisition module is used to calculate the uplink transmission power of at least one of the cell edge users within a specified time period, including:

The acquisition module is specifically configured to calculate the expected uplink received power of the second cell and the path loss information of at least one cell edge user in the specified time period. Uplink transmit power during the time period; or

The designated time period is a period of time after the acquisition module calculates the uplink transmit power of at least one of the cell edge users in the designated time period;

The acquisition module is specifically configured to pre-estimate the uplink transmission power of at least one of the cell edge users in the specified time period according to an internal scheduling algorithm.

35. The base station according to any one of claims 31 to 34, further comprising: a receiving module, configured to receive the base station to which the target cell belongs after the sending module sends the uplink interference power information. The overload notification sent, the overload notification is sent by the base station to which the target cell belongs when it is unable to schedule any users in the target cell after performing noise floor raising processing on the target cell;

The sending module is further configured to send a first uplink transmit power control indication to at least one target user among the cell edge users according to the overload notification received by the receiving module to instruct the at least one target user to reduce the uplink power. Transmit power.

36. The base station according to claim 35, wherein the sending module is further configured to trigger the obtaining module and the sending module itself to continue to perform corresponding operations after sending the first uplink transmit power control indication. .

37. The base station according to claim 36, wherein the receiving module is further configured to receive an overload release notification sent by the base station to which the target cell belongs, and the overload release notification is sent by the base station to which the target cell belongs. Sent when users in the target cell can be scheduled; The sending module is further configured to send a second uplink transmission power control instruction to the at least one target user according to the overload relief notification received by the receiving module to instruct the at least one target user to stop reducing the uplink transmission power.

38. The base station according to any one of claims 31 to 37, characterized in that the first communication system is a long-term evolution LTE system, and the second communication system is a universal mobile communication system UMTS.