WO2013152631A1 - Procédé de gestion de brouillage et station de base - Google Patents

Procédé de gestion de brouillage et station de base Download PDF

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Publication number
WO2013152631A1
WO2013152631A1 PCT/CN2013/070216 CN2013070216W WO2013152631A1 WO 2013152631 A1 WO2013152631 A1 WO 2013152631A1 CN 2013070216 W CN2013070216 W CN 2013070216W WO 2013152631 A1 WO2013152631 A1 WO 2013152631A1
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WO
WIPO (PCT)
Prior art keywords
interference
base station
information
strong
management information
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Application number
PCT/CN2013/070216
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English (en)
Chinese (zh)
Inventor
李强
张永平
周明宇
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华为技术有限公司
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Publication of WO2013152631A1 publication Critical patent/WO2013152631A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/08—Access point devices
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W92/00—Interfaces specially adapted for wireless communication networks
    • H04W92/16—Interfaces between hierarchically similar devices
    • H04W92/20—Interfaces between hierarchically similar devices between access points

Definitions

  • the present invention relates to the field of wireless communications, and in particular, to an interference management method and a base station. Background technique
  • LTE Long Term Evolution
  • PRBs physical resource blocks
  • one base station can be different.
  • Different user equipments UE, User Equipment
  • the base stations of the surrounding cells also receive signals transmitted by the UEs. For the base stations of the surrounding cells, these signals may form interference.
  • Different UEs usually mean different interference levels, thus affecting the scheduling operation of the base stations of the surrounding cells.
  • the embodiments of the present invention provide an interference management method and a base station, so that the interfered base station can perform interference management and reasonable scheduling.
  • an interference management method including: controlling, by a base station, interference management information generated according to interfering user equipment UE information, where the interfering UE information indicates a UE that causes interference to an interfered base station, where the UE is served by the control base station, the interference
  • the management information is used to indicate an interference level of each physical resource block PRB; the control base station transmits the interference management information to the interfered base station, and the interference management information is used by the interfered base station for interference management.
  • an interference management method including: receiving, by an interfering base station, interference management information generated by the control base station according to the information of the interfering user equipment UE, where the interfering UE information indicates a UE that causes interference to the interfered base station, the UE Serving by the control base station, the interference management information is used to indicate an interference level of each physical resource block PRB; the interfered base station performs interference management according to the interference management information.
  • an interference management method including: generating interference management information, where the interference management information is used to indicate an interference level of each physical resource block PRB, and each N bits of the interference management information corresponds to one PRB, Where N is a positive integer greater than one; the interference management information is transmitted to the interfered base station, and the interference management information is used by the interfered base station for interference management.
  • an interference management method including: receiving interference management information sent by a control base station, where the interference management information is used to indicate an interference level of each physical resource block PRB, and each N bits in the dry management information Corresponding to a PRB, where N is a positive integer greater than 1; according to the correspondence between the value of the N bit and the interference level of the PRB, determining the interference level of each PRB indicated by the interference management information for interference management .
  • a base station including: a generating unit, configured to generate interference management information according to the interfering user equipment UE information, where the interfering UE information indicates a UE that causes interference to the interfered base station, where the UE is served by the control base station,
  • the interference management information is used to indicate the interference level of each physical resource block PRB.
  • the sending unit is configured to send the interference management information to the interfered base station, where the interference management information is used by the interfered base station for interference management.
  • a base station including: a receiving unit, configured to receive interference management information generated by the control base station according to the information of the interfering user equipment UE, where the interfering UE information indicates a UE that causes interference to the interfered base station, the UE
  • the interference management information is used by the control base station to indicate the interference level of each physical resource block PRB.
  • the management unit is configured to perform interference management according to the interference management information.
  • a base station including: a generating unit, configured to generate interference management information, where the interference management information is used to indicate an interference level of each physical resource block PRB, and each N bits in the interference management information corresponds to a PRB, where N is a positive integer greater than one; a transmitting unit, configured to send the interference management information to the interfered base station, where the interference management information is used by the interfered base station for interference management.
  • a base station including: a receiving unit, configured to receive interference management information sent by a control base station, where the interference management information is used to indicate an interference level of each physical resource block PRB, and each of the interference management information
  • the N bit corresponds to a PRB, where N is a positive integer greater than 1
  • the determining unit is configured to determine, according to a correspondence between the value of the N bit and the interference level of the PRB, each PRB indicated by the interference management information Interference levels for interference management.
  • the control base station generates interference management information according to the interference UE information, because the interference management information can indicate the interference level of each PRB in the working frequency band, so that the interfered base station can perform interference management and reasonable scheduling.
  • FIG. 1 is a schematic diagram of a scenario in which an embodiment of the present invention may be applied.
  • FIG. 2 is a schematic flow chart of an interference management method according to an embodiment of the present invention.
  • FIG. 3 is a schematic flowchart of an interference management method according to an embodiment of the present invention.
  • FIG. 4 is a schematic flow chart of a process of an interference management method according to an embodiment of the present invention.
  • FIG. 5 is a schematic flowchart of a process of an interference management method according to another embodiment of the present invention.
  • 6 is a schematic diagram of an example of a form of interference management information according to an embodiment of the present invention.
  • 7 is a schematic diagram of another example of the form of interference management information according to an embodiment of the present invention.
  • FIG. 8 is a schematic flowchart of an interference management method according to another embodiment of the present invention.
  • FIG. 9 is a schematic flowchart of an interference management method according to another embodiment of the present invention.
  • Figure 10 is a schematic block diagram of a base station in accordance with one embodiment of the present invention.
  • FIG. 11 is a schematic block diagram of a base station according to another embodiment of the present invention.
  • FIG. 12 is a schematic block diagram of a base station according to another embodiment of the present invention.
  • FIG. 13 is a schematic block diagram of a base station according to another embodiment of the present invention. detailed description
  • GSM Global System of Mobile Communication
  • CDMA Code Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • GPRS General Packet Radio Service
  • LTE Long Term Evolution
  • a user equipment which may also be called a mobile terminal (MT, Mobile Terminal), a mobile user equipment, etc., may be connected to one or more core networks via a radio access network (eg, RAN, Radio Access Network)
  • a radio access network eg, RAN, Radio Access Network
  • the user equipment can be a mobile terminal, such as a mobile phone (or "cellular" phone) and a computer with a mobile terminal, for example, can be portable Mobile, pocket, handheld, computer built-in or in-vehicle mobile devices.
  • the base station may be a base station (BTS, Base Transceiver Station) in GSM or CDMA, or may be a base station (NodeB) in WCDMA, or may be an evolved base station (eNB or e-NodeB, evolved Node B) in LTE.
  • BTS Base Transceiver Station
  • NodeB base station
  • eNB evolved base station
  • e-NodeB evolved Node B
  • FIG. 1 is a schematic diagram of a scenario in which an embodiment of the present invention may be applied.
  • the scenario shown in Figure 1 is a heterogeneous network scenario.
  • a base station 120 is provided, which can be used to increase the communication quality of the hotspot area.
  • the coverage of base station 120 is small and is within the coverage of macro base station 110.
  • Both UE 130a and UE 130b are served by macro base station 110.
  • macro base station 110 schedules UE 130a and UE 130b to transmit data. Since the distance between the UE 130a and the micro base station 120 is relatively close, when the macro base station 110 schedules the UE 130a to transmit data, the interference caused by the UE 130a to the micro base station 120 is much stronger than that caused by other interference sources. When the UE 130b is far away from the micro base station 120, when the UE 130b is scheduled by the macro base station 110, it does not cause strong interference to the micro base station 120. The micro base station 120 then needs to perform interference management.
  • the number of UEs served by the macro base station is not limited to two, and may be one, three, or more.
  • the number of micro base stations is not limited to one, and may be two or more.
  • FIG. 2 is a schematic flow chart of an interference management method according to an embodiment of the present invention.
  • the method of Figure 2 is performed by a control base station, such as macro base station 110 shown in Figure 1.
  • the control base station generates interference management information according to the interference UE information, where the interference UE information indicates a UE that causes interference to the interfered base station, where the UE is served by the control base station, and the interference management information is used to indicate an interference level of each PRB.
  • the control base station sends the interference management information to the interfered base station, where the interference management information is used by the interfered base station for interference management.
  • the control base station generates interference management information according to the interference UE information, because the interference management information can indicate the interference level of each PRB in the working frequency band, so that the interfered base station can perform interference management and reasonable scheduling.
  • the control base station may receive the interference UE information sent by the interfered base station.
  • the control base station may determine the interference UE information according to the measurement feedback information of the UE served by the control base station, where the measurement feedback information indicates the signal strength of the interfered base station.
  • the control base station may receive the interference UE information generated by the interfered base station according to the potential interference UE information sent by the control base station, where the potential interference UE information includes the identifier of the at least one potential interference UE. (Identification, ID) and at least one measurement reference signal configuration information of the potentially interfering UE.
  • a potentially interfering UE may refer to a UE that has potential interference with the interfered base station.
  • the measurement reference signal configuration information may include an SRS (Sounding Reference Signal).
  • the SRS is a reference signal transmitted by the UE on the uplink and can be used for estimation such as channel or interference.
  • the control base station generates interference management information according to the interference UE information generated by the interfered base station, and can improve the accuracy of the interference management information.
  • the foregoing interference UE information may be strong interference UE information, where the strong interference UE information may indicate a UE that causes strong interference to the interfered base station, and the strong interference UE information may include an ID of the strong interference UE.
  • Strong interference may mean that the interference level to the interfered base station is greater than a pre-set interference level threshold. For example, strong interference may mean that the interference level is greater than -100 dBm.
  • the numerical values herein are illustrative only and not limiting of the scope of the embodiments of the invention.
  • the strong interference UE may be selected by the interfered base station from the potential interfering UE, or may be selected by the control base station from the UE served by the control base station.
  • the interfering UE information may also be low interfering UE information, and may indicate a UE that causes low interference to the interfered base station. Similar to strong interference, low interference may mean that the interference level to the interfered base station is less than a preset interference level threshold. For example, low interference may mean that the interference level is less than -100 dBm.
  • the numerical values herein are illustrative only and not limiting of the scope of the embodiments of the invention.
  • the strong interference UE information may further include an interference level of the strong interference UE.
  • the interference management information may be a high interference indicator (,), where each bit corresponds to a PRB, and the value of the bit is used to indicate the level of the corresponding PRB. .
  • the value of the bit is "1”
  • the value of the bit is "0”
  • the control base station may generate interference management information based on the strong interference UE group according to the strong interference UE information, where the strong interference UE group may be interference according to the strong interference UE.
  • the level is divided by the strong interference UE. For example, you can The strong interference UE is divided into two groups. The interference level of the first strong interference UE group is between -80 dBm and -70 dBm, and the interference level of the second strong interference UE group is between -90 dBm and -80 dBm.
  • the above numerical values are illustrative only and are not intended to limit the scope of the embodiments of the invention. In this way, since the interference management information is generated based on the strong interference UE group, the accuracy of the interference management information can be improved.
  • the control base station may generate interference management information, where the interference management information includes ⁇ information corresponding to each strong interfering UE group, where each bit in the ⁇ information corresponds to one PRB. The value of the bit is used to indicate the interference level of the PRB corresponding to the bit.
  • the control base station may generate interference management information, where each N bit of the interference management information corresponds to one PRB, and when the PRB is used to schedule a strong interfering UE group, the value of the N bit is used to indicate the strong interference UE group, where N is a positive integer greater than one.
  • the interference management information can take many forms. For example, if there are two strong interference UE groups, the interference management information generated by the control base station may include two pieces of information. Each ⁇ message can indicate the scheduling of a strong interfering UE group.
  • the control base station may also cause each N bits in the interference management information to correspond to one PRB.
  • the different values of the N bits indicate different strong interfering UE groups. For example, if N is equal to 2, there are two strong interfering UE groups.
  • the PRB is used to schedule a strong interfering UE group, the value of the 2 bits is "01", which indicates the first strong interfering UE group, that is, the first strong interfering UE group is scheduled on the corresponding PRB.
  • the second strong interference UE group can be indicated, that is, the corresponding PRB is up-regulated by the second strong interference UE group.
  • interference management information including HII information corresponding to each strong interference UE group is generated, or each N bits in the generated interference management information is corresponding to one PRB, and the value of N bits is used. Indicates strong interference with the UE group, thereby improving the accuracy of the interference management information.
  • the strong interference UE group may be divided by the interfered base station, or may be divided by the control base station.
  • the interfered base station may divide the strong interference UE into a strong interference UE group, and send the packet information of the strong interference UE group to the control base station.
  • the control base station may classify the strong interference UE into a strong interference UE group according to the interference level of the strong interference UE based on the ID of the strong interference UE.
  • the interference management information may include a first bit sequence and a second bit sequence, the first bit sequence may indicate an interference level of each PRB, and the second bit sequence may indicate interference at each time point. Level. That is, the interference management information can be time-frequency two-dimensional, The two bit sequences are included, the first bit sequence may represent frequency domain information, and the second bit sequence may represent time domain information. Therefore, the accuracy of the interference management information can be improved.
  • the interfered base station After receiving the interference management information, the interfered base station can know the interference level of each PRB, and can determine which PRBs the control base station schedules strong interfering UEs, and which PRBs schedule low interference UEs.
  • the interfered base station can more precisely select the MCS (Modulation and Scheme). For example, the interfered base station can schedule some UEs with better channel quality on the PRB with strong interference level, and can adopt a lower coding rate and MCS.
  • MCS Modulation and Scheme
  • FIG. 3 is a schematic flowchart of an interference management method according to an embodiment of the present invention.
  • the method of Figure 3 is performed by an interfered base station, such as micro-base station 120 shown in Figure 1.
  • the interfered base station receives interference management information generated by the base station according to the interference UE information, where the interference UE information indicates a UE that causes interference to the interfered base station, where the UE is served by the control base station, and the interference management information is used to indicate each PRB.
  • the level of interference is used to indicate each PRB.
  • the interfered base station performs interference management according to the interference management information.
  • the control base station generates interference management information according to the interference UE information, because the interference management information can indicate the interference level of each PRB in the working frequency band, so that the interfered base station can perform interference management and reasonable scheduling.
  • the interfered base station may send the interference UE information to the control base station.
  • the interfered base station may generate interference UE information according to the potential interference UE information sent by the control base station, where the potential interference UE information may include at least one identifier of the potential interference UE and at least one Measurement reference signal configuration information that potentially interferes with the UE.
  • a potential interfering UE may refer to a UE that has potential interference with the interfered base station. These UEs are served by the control base station.
  • the measurement reference signal configuration information may include an SRS.
  • the SRS is a reference signal transmitted by the UE on the uplink and can be used for estimation such as channel or interference.
  • the base station is controlled to generate interference management information according to the interference UE information generated by the interfered base station, thereby improving the accuracy of the interference management information.
  • the interfered base station may determine, according to the potential interference UE information, an interference level of the at least one potential interfering UE; and according to the interference level of the at least one potentially interfering UE, from the at least one potential interference.
  • the UE selects a UE that causes interference to the interfered base station.
  • the interference UE information may be strong interference UE information
  • the interfering UE information indicates a UE that causes strong interference to the interfered base station
  • the strong interfering UE information may include an ID of the strong interfering UE.
  • the interference UE information may also be determined by the control base station according to the measurement feedback information of the UE served by the control base station, where the measurement feedback information indicates the signal strength of the interfered base station.
  • Strong interference may mean that the interference level to the interfered base station is greater than a preset interference level threshold. For example, strong interference may mean that the interference level is greater than -100 dBm.
  • the numerical values herein are illustrative only and not limiting the scope of the embodiments of the invention.
  • the strong interference UE may be selected by the interfered base station from the potential interfering UE, or may be selected by the control base station from the UE served by the control base station.
  • the interfered base station can generate low-interference UE information according to the potential interference UE information sent by the control base station. That is, the interfering UE information may also be low interfering UE information, and may indicate a UE that causes low interference to the interfered base station.
  • low interference may mean that the interference level to the interfered base station is less than a preset interference level threshold.
  • low interference may mean that the interference level is less than -100 dBm.
  • the strong interference UE information may further include a interference level of the strong interference UE.
  • the interference management information may be a high interference indicator (,), where each bit corresponds to a PRB, and the value of the bit is used to indicate the level of the corresponding PRB. .
  • the value of the bit is "1”
  • the value of the bit is "0”
  • the interfered base station may receive interference management information based on the strong interference UE group generated by the control base station according to the strong interference UE information, where the strong interference UE group is based on the interference level of the strong interference UE.
  • Strong interference from UE partitioning For example, the strong interference UE may be divided into two groups, the interference level of the first strong interference UE group is between -80 dBm and -70 dBm, and the interference level of the second strong interference UE group is between -90 dBm and -80 dBm.
  • the above numerical values are illustrative only and are not intended to limit the scope of the embodiments of the invention. Since the interference management information is generated based on the strong interference UE group, the accuracy of the interference management information can be improved.
  • the interfered base station may receive the interference tube.
  • the interference management information includes: ⁇ information corresponding to each strong interfering UE group generated by the base station according to the strong interfering UE information, where each bit in the HII information corresponds to one PRB, and the value of the bit is used to indicate the The interference level of the PRB corresponding to the bit.
  • the interfered base station may receive the interference management information, where each N bits corresponds to one PRB in the interference management information, and when the PRB is used to schedule the strong interference UE group, the value of the N bit is used to indicate the strong interference UE group. Where N is a positive integer greater than one.
  • the interference management information can take many forms. For example, if there are two strong interference UE groups, the interference management information that the control base station can generate may include two pieces of information. Each ⁇ information can indicate a scheduling situation of a strong interfering UE group. Alternatively, each N bits of the interference management information corresponds to one PRB. Different values of N bits indicate different strong interference UE groups. For example, if N is equal to 2, there are two strong interfering UE groups. When the PRB is used to schedule a strong interfering UE group, the first strong interfering UE group may be indicated when the value of 1 bit is "01", that is, the first strong interfering UE group is scheduled on the corresponding PRB. When the value of 2 bits is "10", the second strong interference UE group may be indicated, that is, the second strong interference UE group is scheduled on the corresponding PRB.
  • the interference management information including the HII information corresponding to each strong interfering UE group is used, or each N bits in the interference management information corresponds to one PRB, and the strong interfering UE is indicated by the value of the N bit. Group, thereby improving the accuracy of interference management information.
  • the foregoing strong interfering UE group may be divided by the control base station, or may be divided by the interfered base station.
  • the interfered base station may divide the strong interfering UE into a strong interfering UE group, and send the packet information of the strong interfering UE group to the control base station.
  • the control base station may, after receiving the ID of the strong interfering UE sent by the interfered base station, divide the strong interfering UE into a strong interfering UE group according to the interference level of the strong interfering UE.
  • the interference management information may include a first bit sequence indicating a interference level of each PRB and a second bit sequence indicating an interference level at each time point.
  • the interference management information may be time-frequency two-dimensional, including two bit sequences, the first bit sequence may represent frequency domain information, and the second bit sequence may represent time domain information. Therefore, it is possible to improve the accuracy of the interference management signal, %.
  • the interfered base station After receiving the interference management information, the interfered base station can know the interference level of each PRB, so that it can determine which PRBs the control base station schedules strong interfering UEs, and which PRBs schedule low-interference UEs.
  • the interfered base station can perform scheduling and MCS selection more accurately. For example, the interfered base station can schedule some UEs with better channel quality on the PRB with strong interference level. Use a lower encoding rate and MCS.
  • FIG. 4 is a schematic flow chart of a process of an interference management method in accordance with an embodiment of the present invention.
  • the control base station sends the potential interference UE information to the interfered base station, where the potential interference UE information may include the ID of the at least one potential interference UE and the measurement reference signal configuration information of the at least one potential interference UE.
  • control base station can be the macro base station 110 of Figure 1
  • interfered base station can be the base station 120 of Figure 1.
  • the control base station and the victim base station can be connected by a communication cable, and the information interaction interface between them is "X2 interface". Therefore, the control base station and the victim base station can perform information transmission through the X2 interface.
  • the measurement reference signal configuration information of the potential interference UE may be an SRS.
  • the interfered base station determines, according to the potential interfering UE information in step 401, an interference level of the at least one potentially interfering UE.
  • the interfered base station may perform measurements based on the SRS of the potentially interfering UE to determine the level of interference of the potentially interfering UE to itself.
  • the interfered base station selects a strong interfering UE from the at least one potential interfering UE according to the interference level of the at least one potential interfering UE in step 402.
  • the interfered base station may preset an interference level threshold of the strong interference.
  • the interference level of the potential interference UE is greater than the interference level threshold of the strong interference, the potential interference UE is selected as the strong interference UE.
  • the interfered base station sends the ID of the strong interference UE in step 403 to the control base station.
  • the interfered base station can notify the control base station which of the potentially interfering UEs are strong interfering UEs.
  • the interfered base station may also send the interference level of the strong interfering UE to the control base station.
  • the control base station generates interference management information according to the ID of the strong interference UE sent by the interfered base station in step 404, where the interference management information is used to indicate an interference level of each PRB.
  • the control base station determines the scheduling plan in the next period of time (for example, 20 ms) according to the ID of the strong interfering UE, for example, which PRBs schedule strong interfering UEs, and which PRBs schedule low-interference UEs, thereby generating interference management. information.
  • the interference management information may be ⁇ information. Since the interference management information is generated according to the ID of the strong interference UE transmitted by the interfered base station in the embodiment of the present invention, the accuracy of the interference management information can be improved.
  • the control base station sends the interference management information in step 405 to the interfered base station.
  • the control base station can send interference management information to the interfered base station through the X2 port.
  • the interfered base station After receiving the interference management information, the interfered base station can know the interference level of each PRB, and can determine which PRBs the control base station schedules strong interfering UEs. In addition, the interfered base station has determined the interference level of the strong interfering UE in step 402, and the interfered base station can perform scheduling and MCS selection more accurately. For example, the interfered base station can schedule some UEs with better channel quality on the PRB with strong interference level, and can adopt a lower coding rate and MCS.
  • the control base station generates interference management information according to the interference UE information, because the interference management information can indicate the interference level of each PRB in the working frequency band, so that the interfered base station can perform interference management and reasonable scheduling.
  • the base station by controlling the base station to generate interference management information according to the interference UE information sent by the interfered base station, the accuracy of the interference management information can be improved.
  • FIG. 5 is a schematic flowchart of a process of an interference management method according to another embodiment of the present invention. Steps 501 to 502 in Fig. 5 are substantially the same as steps 401 to 402 in Fig. 4, and in order to avoid repetition, details are not described herein again.
  • the interfered base station selects a strong interfering UE from the at least one potential interfering UE according to the interference level of the potentially interfering UE in step 502, and divides the strong interfering UE group according to the interference level of the strong interfering UE.
  • the interfered base station may divide the strong interference UE into two strong interference UE groups, the interference level of the first strong interference UE group is between -80 dBm and -70 dBm, and the interference level of the second strong interference UE group is -90 dBm to Between -80dBm.
  • the above numerical values are illustrative only and are not intended to limit the scope of the embodiments of the invention.
  • the interfered base station sends the ID of the strong interference UE and the group information of the strong interference UE group to the control base station.
  • the interfered base station may further send the interference level of the strong interfering UE to the control base station.
  • the control base station generates interference management information based on the strong interference UE group according to the ID of the strong interference UE and the group information of the strong interference UE group, where the interference management information is used to indicate the interference level of each PRB.
  • control base station determines a scheduling plan based on the strong interference UE group, for example, on which PRBs the first strong interfering UE group is scheduled, and which PRBs the second strong interfering UE group.
  • the control base station may generate interference management information, where the interference management information includes ⁇ information corresponding to each strong interference UE group, where each bit in the HII information corresponds to one PRB, the ratio The special value is used to indicate the interference level of the PRB corresponding to the bit.
  • the interference management information generated by the control base station may include two pieces of information, and each HII information may indicate a scheduling situation of a strong interfering UE group.
  • 6 is a schematic diagram of an example of a form of interference management information according to an embodiment of the present invention. As shown in FIG. 6, the interference management information may include HII-1 information and HII-2 information. The HII-1 information may indicate the scheduling situation of the first strong interfering UE group, and the HII-2 information may indicate the scheduling situation of the second strong interfering UE group.
  • control base station may generate interference management information, where each N bits corresponds to one PRB, and when the PRB is used to schedule the strong interference UE group, the value of the N bit is used to indicate the strong interference UE group.
  • N is a positive integer greater than one.
  • the system has three PRBs, and there are two strong interfering UE groups.
  • the first strong interfering UE group is scheduled on the first PRB
  • the second strong interfering UE group is scheduled on the second PRB
  • the generated interference management information may correspond to one PRB every 2 bits, so that the interference management information is a 6-bit sequence "011000".
  • the first 2 bits "01" correspond to the first PRB, and "01" indicates the first strong interference UE group.
  • the middle 2 bits "10" correspond to the second PRB, and "10” indicates the second strong interference UE group.
  • the third PRB does not schedule a strong interfering UE group, which is represented by "00".
  • the control base station sends the interference management information in step 505 to the interfered base station.
  • the interfered base station After receiving the interference management information, the interfered base station can know the interference level of each PRB, and can determine that the control base station schedules PRBs of different strong interference UE groups. In addition, the interfered base station has determined the interference level of the strong interfering UE in step 502, and the interfered base station can perform scheduling and MCS selection more accurately.
  • the control base station generates interference management information according to the interference UE information, because the interference management information can indicate the interference level of each PRB in the working frequency band, so that the interfered base station can perform interference management and reasonable scheduling.
  • the base station by controlling the base station to generate interference management information according to the interference UE information and the packet information sent by the interfered base station, the accuracy of the interference management information can be improved.
  • the form of the interference management information in Figs. 4 and 5 may also be time-frequency two-dimensional.
  • the interference management information may include a first bit sequence and a second bit sequence, the first bit sequence may indicate an interference level of each PRB, and the second bit sequence may indicate an interference level at each time point.
  • the controlling base station can decide which of the PRBs at which time the scheduling of the strong interfering UE is performed.
  • the interference management information can be time-frequency two-dimensional, that is, the first bit sequence table can be The frequency domain information is characterized, and the time domain information is characterized by the second bit sequence.
  • Fig. 7 is a diagram showing another example of the form of interference management information according to an embodiment of the present invention.
  • the control base station decides to schedule the strong interfering UE for 5 ms
  • the control base station decides to schedule strong interfering UEs on the 5th to 8th PRBs in the 2nd and 4th subframes in each 5ms period.
  • the first bit sequence in the interference management information is: 000011110000
  • the second bit sequence is: 01010.
  • the interfered cell can know that the 5th to 8th PRBs on the 2nd and 4th subframes will be strongly interfered according to the interference management information, thereby performing scheduling and MCS selection.
  • the accuracy of the interference management information can be improved by representing the frequency domain and the time domain information by the two bit sequences included in the interference management information.
  • FIG. 8 is a schematic flowchart of an interference management method according to another embodiment of the present invention.
  • the method of Figure 8 is performed by a control base station, such as macro base station 110 of Figure 1.
  • the interference management information is used to indicate an interference level of each PRB, and each N bits in the management information corresponds to one PRB, where N is a positive integer greater than 1.
  • the control base station may determine a correspondence between the value of the N bit and the interference level of the PRB, and send the corresponding relationship to the interfered base station.
  • N is equal to 2
  • 2 bits correspond to one PRB.
  • the relationship between the value of 1 bit and the interference level of the PRB can be defined as follows: The value "00" indicates that the interference level of the PRB is less than -100 dBm; the value "01” indicates -100 dBm ⁇ the interference level of the PRB is ⁇ -90 dBm; A value of "10” indicates a -90 dBm ⁇ PRB interference level ⁇ -80 dBm; a value of "11” indicates that the PRB interference level is greater than -80 dBm.
  • the control base station notifies the affected base station of the correspondence relationship before generating the interference management information, and the corresponding relationship is known by the control base station and the victim base station, and the interfered base station can determine the corresponding relationship according to the corresponding relationship in a later period. Interference level of the PRB indicated by the interference management information. In this way, the signaling interaction between the controlling base station and the victim base station can be reduced.
  • the interference management information is generated by the control base station, and the interference management information can indicate the interference level of each PRB in the working frequency band, so that the interfered base station can perform the interference tube. Rational and reasonable scheduling.
  • each N bits of the interference management information corresponds to one PRB, and the accuracy of the interference level of the PRB indicated by the interference management information can be improved, thereby improving the accuracy of the interference management information.
  • FIG. 9 is a schematic flowchart of an interference management method according to another embodiment of the present invention.
  • the method of Figure 9 is performed by an interfered base station, such as micro-base station 120 of Figure 1.
  • the interfered base station may receive the corresponding relationship sent by the control base station.
  • N is equal to 2
  • 2 bits correspond to one PRB.
  • the relationship between the value of 1 bit and the interference level of the PRB can be defined as follows: The value "00" indicates that the interference level of the PRB is less than -100 dBm; the value "01” indicates -100 dBm ⁇ the interference level of the PRB is ⁇ -90 dBm; A value of "10” indicates a -90 dBm ⁇ PRB interference level ⁇ -80 dBm; a value of "11” indicates that the PRB interference level is greater than -80 dBm.
  • the corresponding relationship is known to the control base station and the interfered base station.
  • the interfered base station can determine the interference level of the PRB indicated by the interference management information based on the correspondence. In this way, the signaling interaction between the controlling base station and the victim base station can be reduced.
  • the interference management information is generated by the control base station, and the interference management information can indicate the interference level of each PRB in the working frequency band, so that the interfered base station can perform interference management and reasonable scheduling.
  • each N bits of the interference management information corresponds to one PRB, and the accuracy of the interference level of the PRB indicated by the interference management information can be improved, thereby improving the accuracy of the interference management information.
  • FIG 10 is a schematic block diagram of a base station in accordance with one embodiment of the present invention.
  • An example of base station 1000 of Figure 10 is a control base station, such as macro base station 110 of Figure 1.
  • the base station 1000 includes a generating unit 1010 and a transmitting unit 1020.
  • the generating unit 1010 generates interference management information according to the interference UE information, where the interference UE information refers to The UE that causes interference to the interfered base station, the UE is served by the control base station, and the interference management information is used to indicate the interference level of each physical resource block PRB.
  • the transmitting unit 1020 transmits interference management information to the victim base station, and the interference management information is used by the interfered base station for interference management.
  • the control base station generates interference management information according to the interference UE information, because the interference management information can indicate the interference level of each PRB in the working frequency band, so that the interfered base station can perform interference management and reasonable scheduling.
  • the base station 1000 may further include a processing unit 1030.
  • the processing unit 1030 may receive the interference UE information sent by the interfered base station, or determine the interference UE information according to the measurement feedback information of the UE served by the control base station, where the measurement feedback information indicates the signal strength of the interfered base station.
  • the processing unit 1030 may receive the interference UE information generated by the interfered base station according to the potential interference UE information sent by the control base station, where the potential interference UE information includes the identifier of the at least one potential interference UE and the at least one potential interference.
  • the measurement reference signal configuration information of the UE may be received.
  • the base station by controlling the base station to generate interference management information according to the interference UE information generated by the interfered base station, the accuracy of the interference management information can be improved.
  • the foregoing interference UE information may be strong interference UE information
  • the strong interference UE information may indicate a UE that causes strong interference to the interfered base station
  • the strong interference UE information may include an identifier of the strong interference UE.
  • the generating unit 1010 may generate interference management information based on the strong interference UE group according to the strong interference UE information, where the strong interference UE group is divided according to the interference level of the strong interference UE to the strong interference UE. of.
  • the generating unit 1010 may generate interference management information, where the interference management information may include ⁇ information corresponding to each strong interfering UE group, where each bit in the ⁇ information corresponds to one PRB, where The value of the bit is used to indicate the interference level of the PRB corresponding to the bit.
  • the generating unit 1020 may generate interference management information, where each N bits of the interference management information corresponds to one PRB, and when the PRB is used to schedule a strong interfering UE group, the value of the N bit is used to indicate the strong interfering UE group. Where N is a positive integer greater than one.
  • the embodiment of the present invention generates a message including a group corresponding to each strong interference UE.
  • Interference management information, or each N bit of the generated interference management information corresponds to one PRB, and indicates a strong interference UE group by the value of N bits, thereby improving the accuracy of the interference management information.
  • the strong interference UE group may be divided by the interfered base station or divided by the control base station.
  • the foregoing interference management information may include a first bit sequence indicating a interference level of each PRB, and a second bit sequence indicating an interference level at each time point. . This can improve the accuracy of the interference management information.
  • the strong interference UE information may further include an interference level of the strong interference UE.
  • the control base station generates interference management information according to the interference UE information, because the interference management information can indicate the interference level of each PRB in the working frequency band, so that the interfered base station can perform interference management and reasonable scheduling.
  • FIG. 11 is a schematic block diagram of a base station according to another embodiment of the present invention.
  • An example of base station 1100 of Figure 11 is an interfered base station, such as micro-base station 120 of Figure 1.
  • the base station 1100 includes a receiving unit 1110 and a management unit 1120.
  • the receiving unit 1110 receives the interference management information generated by the control base station according to the interference UE information, and the interference UE information indicates the UE that causes interference to the interfered base station, where the UE is served by the control base station, and the interference management information is used to indicate the interference level of each PRB.
  • the management unit 1120 performs interference management based on the interference management information.
  • the control base station generates interference management information according to the interference UE information, because the interference management information can indicate the interference level of each PRB in the working frequency band, so that the interfered base station can perform interference management and reasonable scheduling.
  • the base station 1100 may further include a sending unit 1130.
  • the transmitting unit 1130 may send the interference UE information to the control base station.
  • the sending unit 1130 may generate the interfering UE information according to the potential interfering UE information sent by the control base station, where the potential interfering UE information includes an identifier of the at least one potentially interfering UE and the at least one potentially interfering UE. Measurement reference signal configuration information.
  • the sending unit 1130 may determine, according to the potential interference UE information, Determining an interference level of the at least one potentially interfering UE; selecting, from the at least one potential interfering UE, a UE that causes interference to the interfered base station according to the interference level of the potentially interfering UE.
  • the foregoing interference UE information may be strong interference UE information, where the strong interference UE information indicates a UE that causes strong interference to the interfered base station, and the strong interference UE information may include an ID of the strong interference UE.
  • the receiving unit 1110 may receive the interference management information based on the strong interference UE group generated by the control base station according to the strong interference UE information, where the strong interference UE group is according to the interference level of the strong-dry 4 UE Strong interference from UE partitioning.
  • the receiving unit 1110 may receive interference management information, where the interference management information includes: control, according to the strong interference UE information, the UI information corresponding to each strong interference UE group, where each bit in the information Corresponding to a PRB, the value of the bit is used to indicate the interference level of the PRB corresponding to the bit.
  • the receiving unit 1110 can receive the interference management information, where each N bits of the interference management information corresponds to one PRB, and when the PRB is used to schedule the strong interference UE group, the value of the N bit is used to indicate the strong interference UE group. Where N is a positive integer greater than one.
  • the interference management information includes the information corresponding to each strong interference UE group, or each N bits in the management information corresponds to one PRB, and indicates the strength by the value of the N bits. Interfering with the UE group, thereby improving the accuracy of the interference management information.
  • the strong interference UE group may be divided by the control base station, or may be divided by the base station.
  • the foregoing interference management information may include a first bit sequence indicating a interference level of each PRB, and a second bit sequence indicating an interference level at each time point. . This can improve the accuracy of the interference management information.
  • the strong interference UE information may further include an interference level of the strong interference UE.
  • the control base station generates interference management information according to the interference UE information, because the interference management information can indicate the interference level of each PRB in the working frequency band, so that the interfered base station can perform interference management and reasonable scheduling.
  • FIG. 12 is a schematic block diagram of a base station according to another embodiment of the present invention.
  • An example of base station 1200 of Figure 12 is a control base station, such as macro base station 110 of Figure 1.
  • the base station 1200 includes a generating unit 1210 and a transmitting unit 1220.
  • the generating unit 1210 generates interference management information, which is used to indicate the interference level of each PRB, and each N bits in the interference management information corresponds to one PRB, where N is a positive integer greater than 1.
  • the transmitting unit 1220 transmits interference management information to the interfered base station, and the interference management information is used by the interfered base station for interference management.
  • the interference management information is generated by the control base station, and the interference management information can indicate the interference level of each PRB in the working frequency band, so that the interfered base station can perform interference management and reasonable scheduling.
  • each N bits of the interference management information corresponds to one PRB, and the accuracy of the interference level of the PRB indicated by the interference management information can be improved, thereby improving the accuracy of the interference management information.
  • the base station 1200 may further include a determining unit 1230.
  • the determining unit 1230 may determine a correspondence between the value of the N bit and the interference level of the PRB before generating the interference management information.
  • the transmitting unit 1220 can also send the correspondence to the interfered base station.
  • FIG. 13 is a schematic block diagram of a base station according to another embodiment of the present invention.
  • An example of base station 1300 of Figure 13 is a victim base station, such as micro-base station 120 of Figure 1.
  • the base station 1300 includes a receiving unit 1310 and a determining unit 1320.
  • the receiving unit 1310 receives the interference management information sent by the control base station, and the interference management information is used to indicate the interference level of each PRB, and each N bits in the interference management information corresponds to one PRB, where N is a positive integer greater than 1.
  • the determining unit 1320 determines the interference level of each PRB indicated by the interference management information according to the correspondence between the value of the N bit and the interference level of the PRB to perform interference management.
  • the interference management information is generated by the control base station, and the interference management information can indicate the interference level of each PRB in the working frequency band, so that the interfered base station can perform interference management and reasonable scheduling.
  • each N bits of the interference management information corresponds to one PRB, and the accuracy of the interference level of the PRB indicated by the interference management information can be improved, thereby improving the accuracy of the interference management information.
  • the receiving unit 1310 may further receive a correspondence that is sent by the control base station before receiving the interference management information sent by the control base station.
  • the interference management information is generated by the control base station, and the interference management information can indicate the interference level of each PRB in the working frequency band, so that the interfered base station can perform interference management and reasonable scheduling.
  • each N bits of the interference management information corresponds to one PRB, and the accuracy of the interference level of the PRB indicated by the interference management information can be improved, thereby improving the accuracy of the interference management information.
  • the disclosed systems, devices, and methods may be implemented in other ways.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not executed.
  • the coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be electrical, mechanical or otherwise.
  • the units described as separate components may or may not be physically separate, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solution of the embodiment.
  • each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the functions may be stored in a computer readable storage medium if implemented in the form of a software functional unit and sold or used as a standalone product.
  • the technical solution of the present invention which is essential to the prior art or part of the technical solution, may be embodied in the form of a software product stored in a storage medium, including
  • the instructions are used to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present invention.
  • the foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and the like, which can store program codes. .

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  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

Des modes de réalisation de la présente invention portent sur un procédé de gestion de brouillage et une station de base. Le procédé comprend les opérations suivantes : une station de base de commande génère des informations de gestion de brouillage conformément à des informations d'un équipement utilisateur (UE) brouilleur, les informations de l'UE brouilleur indiquant un UE causant un brouillage à une station de base brouillée, l'UE étant desservi par la station de base de commande, et les informations de gestion de brouillage étant utilisées pour indiquer un niveau de brouillage de chaque bloc de ressources physiques (PRB) ; et la station de base de commande envoie des informations de gestion de brouillage à la station de base brouillée, les informations de gestion de brouillage étant utilisées par la station de base brouillée pour une gestion de brouillage. Selon les modes de réalisation de la présente invention, la station de base de commande génère les informations de gestion de brouillage conformément aux informations de l'UE brouilleur. Etant donné que les informations de gestion de brouillage peuvent indiquer un niveau de brouillage de chaque PRB au niveau d'une bande de fréquence de travail, la station de base brouillée peut effectuer une gestion de brouillage et une planification appropriée.
PCT/CN2013/070216 2012-04-13 2013-01-08 Procédé de gestion de brouillage et station de base WO2013152631A1 (fr)

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