WO2014153750A1 - Procédé et station de base pour coordonner des interférences dans le même canal entre des cellules intersystème - Google Patents

Procédé et station de base pour coordonner des interférences dans le même canal entre des cellules intersystème Download PDF

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Publication number
WO2014153750A1
WO2014153750A1 PCT/CN2013/073332 CN2013073332W WO2014153750A1 WO 2014153750 A1 WO2014153750 A1 WO 2014153750A1 CN 2013073332 W CN2013073332 W CN 2013073332W WO 2014153750 A1 WO2014153750 A1 WO 2014153750A1
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WIPO (PCT)
Prior art keywords
cell
base station
target
uplink
target cell
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PCT/CN2013/073332
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English (en)
Chinese (zh)
Inventor
夏海涛
高永强
邵家枫
杨晓东
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华为技术有限公司
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Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to PCT/CN2013/073332 priority Critical patent/WO2014153750A1/fr
Priority to CN201380071451.8A priority patent/CN104982086B/zh
Publication of WO2014153750A1 publication Critical patent/WO2014153750A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/18—TPC being performed according to specific parameters
    • H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
    • H04W52/243—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters taking into account interferences
    • H04W52/244—Interferences in heterogeneous networks, e.g. among macro and femto or pico cells or other sector / system interference [OSI]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
    • H04W72/542—Allocation or scheduling criteria for wireless resources based on quality criteria using measured or perceived quality

Definitions

  • 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
  • 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.
  • RAT Radio Access Technology
  • a network of various base station forms and coexistence or superposition of the aforementioned various networks.
  • FSU flexible spectrum usage
  • DSS Dynamic Spectrum Sharing
  • 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.
  • LTE Long Term Evolution
  • UMTS Universal Mobile Telecommunications System
  • 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.
  • 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.
  • 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.
  • 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
  • the base station to which the second cell belongs 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.
  • 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
  • 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.
  • the measurement information includes an energy interference ratio or a received signal code power. .
  • 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.
  • 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:
  • 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.
  • the base station to which the target cell belongs performs, 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.
  • the base station to which the target cell belongs performs 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.
  • 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.
  • the first communications system is a long term evolution LTE system
  • 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:
  • the base station to which the second cell belongs 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.
  • 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.
  • 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.
  • 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:
  • the uplink transmit power of 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 calculates the uplink transmit power of the at least one cell edge user in the specified time period, including:
  • 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.
  • 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;
  • 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.
  • 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;
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • the measurement information includes an energy interference ratio or a received signal code power.
  • 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.
  • 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.
  • 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.
  • 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.
  • the first communications system is a long term evolution LTE system
  • 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.
  • 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.
  • 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.
  • 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 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 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.
  • 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.
  • 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.
  • 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.
  • 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:
  • 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.
  • 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.
  • 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.
  • 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
  • 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.
  • the base station further includes:
  • 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.
  • 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.
  • 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 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.
  • 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.
  • 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.
  • 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.
  • the first communications system is a Long Term Evolution (LTE) system
  • the second communications system is a Universal Mobile Telecommunications System (UMTS).
  • LTE Long Term Evolution
  • UMTS Universal Mobile Telecommunications System
  • 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:
  • 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;
  • 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.
  • 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.
  • 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.
  • 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 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 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.
  • 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.
  • 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.
  • 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.
  • the first communications system is a Long Term Evolution (LTE) system
  • the second communications system is a Universal Mobile Telecommunications System (UMTS).
  • LTE Long Term Evolution
  • UMTS Universal Mobile Telecommunications System
  • 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.
  • 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.
  • 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
  • FIG. 2 is a flow chart of a method for co-channel interference coordination between different systems according to an embodiment of the present invention
  • 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.
  • 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.
  • 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.
  • the heterogeneous network uses the FSU method.
  • 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.
  • 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.
  • the following embodiment of the present invention provides a solution.
  • the target cell in the second communication system shares the spectrum resource of the first cell in the first communication system.
  • 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.
  • 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.
  • 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).
  • PRB physical resource block
  • 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 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • the measurement information includes an energy interference ratio Ec/Io, or may be a Received Signal Code Power (RSCP).
  • RSCP Received Signal Code Power
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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 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.
  • 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.
  • 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.
  • 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.
  • the uplink transmit power of each cell edge user may be normalized to obtain uplink interference power information.
  • 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.
  • 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.
  • 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.
  • 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:
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • the uplink interference power information generated by the second cell to the target cell may also be changed.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • the target cell in the second communication system shares the spectrum resource of the first cell in the first communication system.
  • the method includes:
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • the processing result may be filled in the IE that carries the uplink interference power information and sent to the IE.
  • 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.
  • PHR Power Head Room
  • the uplink transmit power of each cell edge user calculated by the base station to which the second cell belongs is a posteriori.
  • 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.
  • 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.
  • the uplink transmit power of each cell edge user calculated by the base station to which the second cell belongs is a priori.
  • 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.
  • 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.
  • 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.
  • the method further includes: after step 402:
  • 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.
  • 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.
  • 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
  • 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.
  • 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.
  • the uplink interference power information generated by the second cell to the target cell may also be changed.
  • 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.
  • the method further includes:
  • 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.
  • 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.
  • 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.
  • 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. .
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • the foregoing first communications system may be an LTE system
  • the second communications system may be
  • 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.
  • 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.
  • 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.
  • 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.
  • the base station includes: a memory 81 and a processor 82.
  • the memory 81 is used to store a program.
  • 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.
  • CPU central processing unit
  • ASIC application specific integrated circuit
  • the base station further includes: a receiver 83.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • the above measurement information may include an energy interference ratio or a received signal code power.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • the first communications system is an LTE system
  • the second communications system is a UMTS.
  • 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.
  • ISA Industry Standard Architecture
  • PCI Peripheral Component
  • EISA Extended Industry Standard Architecture
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • the transmitting module 902 is further configured to receive the receiving module.
  • 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.
  • 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.
  • 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.
  • the first communication system may be an LTE system
  • 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.
  • 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.
  • 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.
  • the base station includes: a memory 1101, a processor 1102, and a transmitter 1103.
  • the memory 1101 is used to store a program.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • the first communication system may be an LTE system
  • the second communication system may be a UMTS
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.

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Abstract

Des modes de réalisation de la présente invention concernent un procédé et une station de base pour coordonner des interférences dans le même canal entre des cellules intersystème. Le procédé comprend : partage, par une cellule cible dans un deuxième système de communication, d'une ressource spectrale d'une première cellule dans un premier système de communications, et obtention, par une station de base qui dessert la cellule cible, d'informations de puissance d'interférences de liaison montante provoquées à la cellule cible par un utilisateur de limite de cellule ordonnancé sur une unité de ressource spectrale dans une deuxième cellule, la deuxième cellule étant une cellule adjacente à la première cellule dans le premier système de communications et utilisant une ressource spectrale qui est la même que la ressource spectrale utilisée par la première cellule; et utilisation, par la station de base qui dessert la cellule cible, des informations de puissance des interférences de liaison montante en tant que contribution de la deuxième cellule au plancher de bruit du récepteur de la cellule cible, et réalisation d'une élévation du plancher de bruit sur la cellule cible. La solution technique dans la présente invention résout un problème d'interférences dans le même canal entre des cellules intersystème.
PCT/CN2013/073332 2013-03-28 2013-03-28 Procédé et station de base pour coordonner des interférences dans le même canal entre des cellules intersystème WO2014153750A1 (fr)

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US11737126B2 (en) 2017-08-10 2023-08-22 Beijing Xiaomi Mobile Software Co., Ltd. Method and device for controlling interference
CN110602008B (zh) * 2018-06-13 2023-04-07 中兴通讯股份有限公司 一种小区间干扰抑制方法、设备、装置和计算机存储介质

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EP2490497A1 (fr) * 2011-02-15 2012-08-22 Alcatel Lucent Émetteur-récepteur de station mobile et de base, procédés et programmes informations pour la fourniture d'une configuration de mesure et d'un résultat de mesure
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