WO2018202063A1 - 干扰协调信息交互方法、减轻交叉链路干扰的方法和基站 - Google Patents

干扰协调信息交互方法、减轻交叉链路干扰的方法和基站 Download PDF

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Publication number
WO2018202063A1
WO2018202063A1 PCT/CN2018/085419 CN2018085419W WO2018202063A1 WO 2018202063 A1 WO2018202063 A1 WO 2018202063A1 CN 2018085419 W CN2018085419 W CN 2018085419W WO 2018202063 A1 WO2018202063 A1 WO 2018202063A1
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WIPO (PCT)
Prior art keywords
base station
interference
power
uplink
information
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PCT/CN2018/085419
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English (en)
French (fr)
Inventor
马楠
张治�
唐恬
唐琦翔
廖文兵
霍智斌
曹伟
郭少珍
侯晓林
陈岚
Original Assignee
株式会社Ntt都科摩
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Application filed by 株式会社Ntt都科摩 filed Critical 株式会社Ntt都科摩
Priority to CN201880025599.0A priority Critical patent/CN110612764B/zh
Priority to US16/609,504 priority patent/US20200145153A1/en
Publication of WO2018202063A1 publication Critical patent/WO2018202063A1/zh

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    • 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
    • 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
    • H04L5/0032—Distributed allocation, i.e. involving a plurality of allocating devices, each making partial allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/30—Monitoring; Testing of propagation channels
    • H04B17/309—Measuring or estimating channel quality parameters
    • H04B17/345—Interference values
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/022—Site diversity; Macro-diversity
    • H04B7/024—Co-operative use of antennas of several sites, e.g. in co-ordinated multipoint or co-operative multiple-input multiple-output [MIMO] systems
    • 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
    • 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
    • H04L5/0058—Allocation criteria
    • H04L5/0073—Allocation arrangements that take into account other cell interferences
    • 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
    • H04W52/26—TPC being performed according to specific parameters using transmission rate or quality of service QoS [Quality of Service]
    • H04W52/262—TPC being performed according to specific parameters using transmission rate or quality of service QoS [Quality of Service] taking into account adaptive modulation and coding [AMC] scheme
    • 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
    • H04W52/38—TPC being performed in particular situations
    • H04W52/42—TPC being performed in particular situations in systems with time, space, frequency or polarisation diversity
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/046—Wireless resource allocation based on the type of the allocated resource the resource being in the space domain, e.g. beams
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/27—Control channels or signalling for resource management between access points

Definitions

  • the present invention relates to the field of mobile communications, and more particularly to an inter-base station interference coordination information interaction method, a method for mitigating cross-link interference between base stations, and a base station using the above method.
  • a dynamic time division duplex (TDD) scheme realizes flexible services by dynamically changing the uplink and downlink transmission directions of each base station to adapt to changes in uplink and downlink traffic. Adaptability.
  • a new interference type that is, downlink to uplink interference (base station to base station) is introduced. Interference) and uplink interference to the downlink (interference from user equipment to user equipment).
  • the transmission power of the base station is usually much higher than the transmission power of the user equipment, and the path loss between the base stations may be very close to the path loss of the free space due to the height of the base station, the downlink to the uplink cross-link Road interference (base station to base station interference) will seriously impair the communication quality of the uplink.
  • the present invention provides an inter-base station interference coordination information interaction method, a method for mitigating cross-link interference between base stations, and a base station using the above method.
  • a method for interacting inter-base station interference coordination information including: determining a predetermined beam setting of a base station; establishing a beam index indicating each beam in the predetermined beam setting and a corresponding state thereof; And transmitting the beam index to other base stations.
  • a method for mitigating cross-link interference between base stations comprising: receiving beam-related interference coordination information from other base stations; determining and Beam-associated interference state information; and adjusting power and/or modulation coding mode of each beam based on the interference state information.
  • a base station including: an interference coordination information receiving unit, configured to receive beam-related interference coordination information from other base stations; and an interference state information determining unit, configured to Interference coordination information, determining interference state information associated with the beam; and interference adjustment unit configured to adjust power and/or modulation coding mode of each beam based on the interference state information.
  • the method for interacting inter-base station interference coordination information according to the embodiment of the present invention, the method for mitigating cross-link interference between base stations, and the base station using the foregoing method, configuring inter-base station interference coordination information at the beam level, and considering beam level interference Coordination and power limitation further improve spectral efficiency, resource utilization, and system throughput compared to interference coordination that only considers physical resource block level.
  • 1 is a schematic diagram illustrating cross-link interference between base stations
  • FIG. 2 is a flowchart illustrating an interaction method of inter-base station interference coordination information according to an embodiment of the present invention
  • FIG. 3 is a schematic diagram illustrating a base station and its associated beams, in accordance with an embodiment of the present invention
  • 4A and 4B are schematic diagrams illustrating a first example format of a beam index according to an embodiment of the present invention.
  • 5A and 5B are diagrams illustrating a second example format of a beam index according to an embodiment of the present invention.
  • 6A through 6C are diagrams illustrating a third example format of a beam index according to an embodiment of the present invention.
  • FIGS. 7A through 7C are diagrams illustrating a fourth example format of a beam index according to an embodiment of the present invention.
  • FIGS. 8A through 8C are diagrams illustrating a fifth example format of a beam index according to an embodiment of the present invention.
  • FIG. 9 is a flowchart outlining a method for mitigating cross-link interference between base stations according to an embodiment of the present invention.
  • FIG. 10 is a flow chart further illustrating a first example method for mitigating cross-link interference between base stations, in accordance with an embodiment of the present invention
  • FIG. 11 is a diagram illustrating a communication system to which a first exemplary method for mitigating cross-link interference between base stations is applied according to an embodiment of the present invention
  • FIG. 12 is a flow chart further illustrating a second example method for mitigating cross-link interference between base stations, in accordance with an embodiment of the present invention
  • FIG. 13 is a diagram illustrating a communication system to which a second exemplary method for mitigating cross-link interference between base stations is applied according to an embodiment of the present invention
  • FIG. 14 is a flow chart further illustrating a third example method for mitigating cross-link interference between base stations, in accordance with an embodiment of the present invention.
  • 15 is a diagram illustrating a communication system to which a third example method for mitigating cross-link interference between base stations is applied according to an embodiment of the present invention
  • 16 is a schematic diagram illustrating transmission power and modulation coding mode adjustment of a method for mitigating cross-link interference between base stations according to an embodiment of the present invention
  • FIG. 17 is a block diagram illustrating a base station according to an embodiment of the present invention.
  • FIG. 18 is a block diagram illustrating an example of a hardware configuration of a base station and a user equipment according to an embodiment of the present invention.
  • FIG. 1 is a schematic diagram outlining a communication system in accordance with an embodiment of the present invention.
  • the base station 100a performs downlink communication, transmits data to the user equipment 200a, and the base station 100b performs uplink communication to receive data from the user equipment 200b.
  • the present invention provides a method for mitigating cross-link interference between base stations. Specifically, in the method for mitigating cross-link interference between base stations according to the present invention, interaction between inter-base station interference coordination information is required, and the present invention further provides an interaction method for inter-base station interference coordination information and configured for the interaction. Method of inter-base station interference coordination information at the beam level.
  • FIG. 2 is a flow chart illustrating an interaction method of inter-base station interference coordination information according to an embodiment of the present invention. As shown in FIG. 2, the method for interacting inter-base station interference coordination information according to an embodiment of the present invention includes the following steps.
  • step S201 a predetermined beam setting of the base station is determined.
  • the base station first determines beam settings that are available for uplink and downlink communications. Thereafter, the processing proceeds to step S202.
  • a beam index indicating each beam in the predetermined beam setting and its corresponding state is established.
  • the corresponding state of each beam can be used to indicate whether each beam is used or the degree of interference per beam. More specifically, as will be described in detail below with reference to the accompanying drawings, the corresponding state of the beam may indicate whether each beam is used or the degree of interference of each beam for a specific physical resource block; the corresponding state of the beam may indicate that each beam corresponds to Interference power, and/or allowed interfered power, and/or each interfered power of each beam corresponding to a different modulation and coding scheme; the corresponding state of the beam may be indicative of each beam packet corresponding to a predetermined number of beams The interference power, and/or the allowed interfered power, and/or the permissible interference power of each beam packet corresponding to a different modulation and coding scheme; and the corresponding state of the beam may also indicate a predetermined beam index sequence consisting of each beam The interference power corresponding to each sequence element in the
  • the beam index is transmitted to other base stations.
  • the beam index is an integral part of inter-base station interference coordination information. After transmitting its own beam index inter-base station interference coordination information and receiving inter-base station interference coordination information from a neighboring base station, both the uplink base station and the downlink base station can determine current interference state information, and further based on the interference state information. The adjustment of the transmit power and/or modulation coding method is performed.
  • FIG. 3 is a schematic diagram illustrating a base station and its associated beams, in accordance with an embodiment of the present invention.
  • the base station 300a performs downlink data communication with the user equipment through the beams 1a to 4a
  • the base station 300b performs uplink data communication with the user equipment through the beams 1b to 3b.
  • downlink data communication by base station 300a through each of beams 1a through 4a may interfere with uplink data communication by base station 300b through each of beams 1b through 3b.
  • the content of the beam index indicates whether each beam is used or the degree of interference of each beam.
  • the content HII of the Tx beam index is used to indicate whether the beam is used. For example, when the value of HII is "1", it indicates that the beam is used, and when the value of HII is "0", it indicates that the beam is not used.
  • the content OI of the Rx beam index is used to indicate the degree of interference of the beam. For example, OI can be divided into three levels, indicating low interference levels, medium interference levels, and high interference levels.
  • 5A and 5B are diagrams illustrating a second example format of a beam index according to an embodiment of the present invention.
  • the content of the beam index in the second example format of the beam index according to an embodiment of the present invention indicates each for a specific physical resource block (RB) Whether the beam is used or the degree of interference per beam.
  • RB physical resource block
  • the meanings of HII and OI in the beam index in the second example format of the beam index according to the embodiment of the present invention are the same as the first example format, and a repetitive description thereof will be omitted herein.
  • the contents of the beam index in the third example format of the beam index according to an embodiment of the present invention is used to indicate information related to the quantized interference power.
  • the contents P 1 to P N of the beam index in FIG. 6A indicate the quantized power corresponding to the interfered power allowed for each beam;
  • the contents of the beam index P 1 in FIG. 6B , MCS to P N, MCS indicates each beams corresponding to different modulation and coding scheme (MCS) of the quantized power allowed by the interference power; beam index of the contents of FIG. 6C P '1 to P' N indicative of the power of each beam corresponding to the quantization interference power.
  • MCS modulation and coding scheme
  • FIG. 7A through 7C are diagrams illustrating a fourth example format of a beam index according to an embodiment of the present invention.
  • the beam index in the fourth example format of the beam index according to an embodiment of the present invention further considers the case of performing beam packet indexing in a massive MIMO application scenario on the basis of the third example format.
  • Each beam packet in Figures 7A to 7C may comprise a plurality of beams, for example beam packet 1 may comprise beams 0 to N 1 , beam packet 2 may comprise beams N 1 +1 to N 2 , and so on, beam packet K Beams N K-1 +1 to N K may be included. Further, the contents P 1 to P K of the beam index in FIG.
  • each beam packet corresponds to a quantized power of the allowed interference power of a different modulation and coding scheme (MCS); the contents of the beam index P' 1 to P' K in FIG. 7C indicate the quantized power of each beam packet corresponding to the interference power .
  • MCS modulation and coding scheme
  • FIG. 8A through 8C are diagrams illustrating a fifth example format of a beam index according to an embodiment of the present invention.
  • a beam indexing scheme according to a predetermined beam index sequence may be considered, wherein each sequence element includes one or more beams.
  • Such a predetermined beam index sequence is known to all base stations, so the base station receiving the beam index can obtain information about the quantized interference power of the corresponding beam or beam packet based on a predetermined index sequence.
  • the contents P 1 to P N of the beam index in FIG. 8A indicate the quantized power corresponding to the interference power allowed for each sequence element in the predetermined beam index sequence; the content of the beam index in FIG.
  • MCS indicates the quantized power of each of the sequence elements in the predetermined beam index sequence corresponding to the allowed interference power of different modulation and coding schemes (MCS); the content of the beam index in FIG. 8C is indicated by P' 1 to P' K Each sequence element in the predetermined beam index sequence corresponds to a quantized power of interference power.
  • FIG. 9 is a flow chart outlining a method for mitigating cross-link interference between base stations in accordance with an embodiment of the present invention. As shown in FIG. 9, a method for mitigating cross-link interference between base stations according to an embodiment of the present invention includes the following steps.
  • step S901 interference coordination information associated with the beams from other base stations is received.
  • the interference coordination information associated with the beam includes one or more of the following: beam index information of the base station, physical resource block configuration information, and permissible acceptance of each beam.
  • the beam index information of the base station may adopt the first to fifth beam index formats as described above with reference to Figs. 4A to 8C. Thereafter, the processing proceeds to step S902.
  • step S902 interference state information associated with the beam is determined based on the interference coordination information.
  • the interference state information includes one or more of the following: each of the uplink base stations is allowed to be interfered with by the downlink base station in different modulation and coding modes. Power; the interference power of each beam of the downlink base station for each beam of the uplink base station; the total interference power of each beam of the downlink base station for the uplink base station; and the downlink base station for the uplink The total interference power of each beam of the road base station. Thereafter, the processing proceeds to step S903.
  • step S903 the power and/or modulation coding mode of each beam is adjusted based on the interference state information.
  • the downlink base station can adjust the power of each beam based on the interference state information, and the uplink base station can modulate the coding mode based on the interference state information, or the uplink base station and the downlink. The way base station can perform coordinated adjustment based on the interference status information.
  • FIG. 10 is a flow chart further illustrating a first exemplary method for mitigating cross-link interference between base stations according to an embodiment of the present invention
  • FIG. 11 is a diagram illustrating application for mitigating inter-base station cross-links according to an embodiment of the present invention.
  • a schematic diagram of a communication system of a first example method of interference The first example method as shown in Figures 10 and 11 is performed by a downlink base station.
  • step S1001 interference coordination information associated with the beams from other base stations is received.
  • the downlink base station 300a receives interference coordination information 400b from the uplink base station 300b, which may include beam index information, physical of the uplink base station 300b. Resource block configuration information, allowed interference power information corresponding to each beam. Thereafter, the process proceeds to step S1002.
  • interference state information associated with the beam is determined based on the interference coordination information.
  • the interference state information associated with the beam comprises: (1) the allowed interfered power for the downlink base station for each beam of the uplink base station in a given modulation coding mode; 2) the interference power of each beam of the downlink base station for each beam of the uplink base station; (3) the total interference power of each beam of the downlink base station for the uplink base station.
  • the following parameters are preset:
  • j' an index of other interfering base stations other than the target interfering base station.
  • Representing the signal to interference and noise ratio (SINR) requirement of the user of base station j on the kth beam Indicates the transmission rate requirement of the user of base station j on the kth beam, and B represents the transmission bandwidth.
  • SINR signal to interference and noise ratio
  • Representing the total allowed interference power of the kth beam of base station j for base station i Indicates the interference power from the k'th beam of the base station i allowed on the kth beam of the base station j, and RSRP ij represents the received signal reference power of the base station i to the base station j.
  • P k'k represents the interference power of the kth beam of the base station i to the kth beam of the base station j
  • An equalization matrix representing the user of base station j on the kth beam, a channel matrix representing the kth beam of the base station i to the kth beam of the base station j, Indicates the transmit precoding matrix of base station i on the k'th beam.
  • P k ' represents the total interference power of the k'th beam of base station i to base station j
  • P k'k represents the interference power of the kth beam of base station i to the kth beam of base station j.
  • step S1002 After the interference state information is determined in step S1002, the processing proceeds to step S1003.
  • step S1003 the downlink base station generates a list of priorities corresponding to each beam including the downlink base station based on the total interference power of each beam for the uplink base station.
  • the downlink base station 300a assigns a higher priority to the beam having a lower total interference power for the uplink base station 300b. Thereafter, the process proceeds to step S1004.
  • step S1004 based on the allowed interfered power of the uplink base station, the transmit power of the beam of the downlink base station is adjusted according to the priority corresponding to each beam of the downlink base station.
  • the downlink base station 300a adjusts the transmission power of the beam having the lowest priority according to the expression (8).
  • FIG. 12 is a flow chart further illustrating a second exemplary method for mitigating cross-link interference between base stations in accordance with an embodiment of the present invention
  • FIG. 13 is a diagram illustrating application for mitigating inter-base station cross-links in accordance with an embodiment of the present invention.
  • a schematic diagram of a communication system of a second example method of interference The second example method as shown in Figures 12 and 13 is performed by an uplink base station.
  • step S1201 interference coordination information associated with the beams from other base stations is received.
  • the uplink base station 300b receives the interference coordination information 400a from the downlink base station 300a, and the interference coordination information 400a may include beam index information, physical of the downlink base station 300a. Resource block configuration information, interference power information for each uplink for the uplink base station 300b. Thereafter, the process proceeds to step S1202.
  • interference state information associated with the beam is determined based on the interference coordination information.
  • the interference state information associated with the beam comprises: (1) the allowed interfered power for the downlink base station for each beam of the uplink base station in different modulation and coding modes; (2) The interference power of each beam of the downlink base station for each beam of the uplink base station; (4) the total interference power of the downlink base station for each beam of the uplink base station.
  • P k represents the total interference power of the k-th beam of the base station i to the base station j
  • P k'k represents the interference power of the k-th beam of the base station i to the k-th beam of the base station j.
  • step S1202 After the interference state information is determined in step S1202, the processing proceeds to step S1203.
  • step S1203 based on the interference power of the downlink base station, the modulation coding scheme of each beam of the uplink base station is adjusted according to the allowed interference power of the uplink base station.
  • the uplink base station 300b can adjust the modulation coding mode of its beam, and select a lower order modulation coding mode for the beam with larger interference.
  • FIG. 14 is a flow chart further illustrating a third exemplary method for mitigating cross-link interference between base stations according to an embodiment of the present invention
  • FIG. 15 is a diagram illustrating application for mitigating inter-base station cross-links according to an embodiment of the present invention.
  • step S1401 interference coordination information associated with the beams from other base stations is received.
  • the downlink base station 300a receives the interference coordination information 400b from the uplink base station 300b, and the interference coordination information 400b may include beam index information of the uplink base station 300b, and physical. Resource block configuration information, allowed interference power information corresponding to each beam.
  • the uplink base station 300b receives interference coordination information 400a from the downlink base station 300a, which may include beam index information of the downlink base station 300a, physical resource block configuration information, and each beam for the uplink Interference power information of the base station 300b. Thereafter, the processing proceeds to step S1402.
  • step S1402 interference state information associated with the beam is determined based on the interference coordination information.
  • the beam-related interference state information is calculated by the expression (1) to the expression (7-2) described above with reference to FIGS. 10 to 13. Thereafter, the processing proceeds to step S1403.
  • step S1403 the downlink base station generates a list of priorities corresponding to each of the beams including the downlink base station based on the total interference power of each beam for the uplink base station.
  • the downlink base station 300a assigns a higher priority to the beam having a lower total interference power for the uplink base station 300b. Thereafter, the process proceeds to step S1404.
  • step S1404 based on the allowed interfered power of the uplink base station, adjusting the transmit power of the downlink base station's beam and/or adjusting the uplink base station according to the priority corresponding to each beam of the downlink base station Modulation coding method for each beam.
  • the downlink base station 300a adjusts the transmission power of the beam of the downlink base station and the manner in which the uplink base station 300b adjusts the modulation coding scheme of the beam of the uplink base station and the above with reference to FIGS. 10 and 12.
  • the described steps S1004 and S1203 are respectively the same.
  • a tradeoff between adjusting the transmit power of the beam of the downlink base station and adjusting the modulation and coding mode of the beam of the uplink base station may be performed according to the needs of actual communication, so as to simultaneously satisfy each The communication needs of the base station and its user equipment.
  • 16 is a schematic diagram illustrating transmission power and modulation coding mode adjustment of a method for mitigating cross-link interference between base stations according to an embodiment of the present invention.
  • the total interference power of the Tx beams 1 to 4 of the downlink base station to the Rx beam 1 is greater than the interference power allowed by the Rx beam 1.
  • a feasible way is to adjust the modulation and coding mode of the Rx beam 1.
  • the allowable interference power requirement can be satisfied.
  • the transmission power of the Tx beam 4 of the downlink base station (having the largest interference power to the Rx beam 1) can also be reduced, thereby reducing the total interfered power of the Rx beam 1 to meet the demand for the allowed interference power.
  • Rx Beam 3 in the case of 64QAM, 16QAM, and QPSK modulation coding, the required interference power requirement can be satisfied, thereby eliminating the need to reduce the transmission power of the Tx beam of the downlink base station.
  • FIG. 17 is a block diagram illustrating a base station according to an embodiment of the present invention.
  • a base station 1700 according to an embodiment of the present invention includes an interference coordination information receiving unit 1701, an interference state information determining unit 1702, and an interference adjusting unit 1703.
  • the interference coordination information receiving unit 1701 is configured to receive interference coordination information associated with the beams from other base stations.
  • the interference state information determining unit 1702 is configured to determine interference state information associated with the beam based on the interference coordination information.
  • the interference adjustment unit 1703 is configured to adjust power and/or modulation and coding mode of each beam based on the interference state information.
  • the interference coordination information received by the interference coordination information receiving unit 1701 includes one or more of the following: beam index information of the base station, physical resource block configuration information, allowed interference power information corresponding to each beam, and interference corresponding to each beam. power.
  • the interference state information determined by the interference state information determining unit 1702 includes one or more of the following: each interfered power of the downlink base station for each downlink of the uplink base station in different modulation and coding modes; the downlink base station Interference power of each beam for each beam of the uplink base station; total interference power of each beam of the downlink base station for the uplink base station; and each beam of the downlink base station for the uplink base station The total interference power.
  • the interference adjustment unit 1703 when configured in a downlink base station, the interference adjustment unit 1703 generates a list of priorities corresponding to each beam including the downlink base station based on the total interference power of each beam for the uplink base station. And adjusting the transmit power of the beam according to the allowed interference power of the uplink base station according to the priority corresponding to each beam of the downlink base station.
  • the interference adjustment unit 1703 adjusts the modulation and coding scheme of each beam according to the interference power of the uplink base station based on the interference power of the downlink base station.
  • each functional block may be implemented by one device that is physically and/or logically combined, or two or more devices that are physically and/or logically separated, directly and/or indirectly (eg, This is achieved by a plurality of devices as described above by a wired and/or wireless connection.
  • the base station, user equipment, and the like in the embodiments of the present invention can function as a computer that performs processing of the wireless communication method of the present invention.
  • 18 is a block diagram illustrating an example of a hardware configuration of a base station and a user equipment according to an embodiment of the present invention.
  • the base station 10 and the user equipment 20 described above may be configured as a computer device that physically includes the processor 1001, the memory 1002, the memory 1003, the communication device 1004, the input device 1005, the output device 1006, the bus 1007, and the like.
  • the hardware structure of the base station 10 and the user equipment 20 may include one or more of the devices shown in the figures, or may not include some of the devices.
  • the processor 1001 only illustrates one, but may be multiple processors.
  • the processing may be performed by one processor, or may be performed by one or more processors simultaneously, sequentially, or by other methods.
  • the processor 1001 can be installed by more than one chip.
  • Each function in the base station 10 and the user equipment 20 is realized, for example, by reading a predetermined software (program) into hardware such as the processor 1001 and the memory 1002, thereby causing the processor 1001 to perform an operation, and the communication device 1004 The communication performed is controlled, and the reading and/or writing of data in the memory 1002 and the memory 1003 is controlled.
  • a predetermined software program
  • the communication device 1004 The communication performed is controlled, and the reading and/or writing of data in the memory 1002 and the memory 1003 is controlled.
  • the processor 1001 causes the operating system to operate to control the entire computer.
  • the processor 1001 may be configured by a central processing unit (CPU) including an interface with a peripheral device, a control device, an arithmetic device, a register, and the like.
  • CPU central processing unit
  • the above-described reception control unit 103, retransmission control unit 203, and the like can be implemented by the processor 1001.
  • the processor 1001 reads out programs (program codes), software modules, data, and the like from the memory 1003 and/or the communication device 1004 to the memory 1002, and executes various processes in accordance therewith.
  • programs program codes
  • the program a program for causing a computer to execute at least a part of the operations described in the above embodiments can be employed.
  • the retransmission control unit 203 of the user equipment 20 can be implemented by a control program stored in the memory 1002 and operated by the processor 1001, and can be similarly implemented for other functional blocks.
  • the memory 1002 is a computer readable recording medium, and may be, for example, a read only memory (ROM, Read Only Memory), a programmable read only memory (EPROM), an electrically programmable read only memory (EEPROM), or a random access memory ( At least one of RAM, Random Access Memory, and other suitable storage media.
  • the memory 1002 may also be referred to as a register, a cache, a main memory (main storage device), or the like.
  • the memory 1002 can store an executable program (program code), a software module, and the like for implementing the wireless communication method according to the embodiment of the present invention.
  • the memory 1003 is a computer readable recording medium, and may be, for example, a flexible disk, a soft (registered trademark) disk (floppy disk), a magneto-optical disk (for example, a CD-ROM (Compact DiscROM), etc.), digital universal CD, Blu-ray (registered trademark) disc, removable disk, hard drive, smart card, flash device (eg card, stick, key driver), magnetic stripe, database, server And at least one of other suitable storage media.
  • the memory 1003 may also be referred to as an auxiliary storage device.
  • the communication device 1004 is hardware (transmission and reception device) for performing communication between computers through a wired and/or wireless network, and is also referred to as a network device, a network controller, a network card, a communication module, and the like, for example.
  • the communication device 1004 may include a high frequency switch, a duplexer, a filter, a frequency synthesizer, etc., in order to implement, for example, Frequency Division Duplex (FDD) and/or Time Division Duplex (TDD).
  • FDD Frequency Division Duplex
  • TDD Time Division Duplex
  • the above-described transmitting unit 101, receiving unit 102, receiving unit 201, transmitting unit 202, and the like can be implemented by the communication device 1004.
  • the input device 1005 is an input device (for example, a keyboard, a mouse, a microphone, a switch, a button, a sensor, etc.) that accepts input from the outside.
  • the output device 1006 is an output device (for example, a display, a speaker, a light emitting diode (LED) lamp, etc.) that performs an output to the outside.
  • the input device 1005 and the output device 1006 may also be an integrated structure (for example, a touch panel).
  • each device such as the processor 1001 and the memory 1002 is connected via a bus 1007 for communicating information.
  • the bus 1007 may be composed of a single bus or a different bus between devices.
  • the base station 10 and the user equipment 20 may include a microprocessor, a digital signal processor (DSP, Digital Signal Processor), an application specific integrated circuit (ASIC), a programmable logic device (PLD, Programmable Logic Device), and a field programmable gate array (FPGA). Hardware such as FieldProgrammableGateArray), which can be used to implement part or all of each function block.
  • DSP digital signal processor
  • ASIC application specific integrated circuit
  • PLD programmable logic device
  • FPGA field programmable gate array
  • Hardware such as FieldProgrammableGateArray
  • the processor 1001 can be installed by at least one of these hardwares.
  • Interference coordination information while considering beam-level interference coordination and power limitation, further improves spectrum efficiency, resource utilization, and system throughput compared to interference coordination considering only physical resource block levels.
  • the channel and/or symbol can also be a signal (signaling).
  • the signal can also be a message.
  • the reference signal may also be simply referred to as RS (Reference Signal), and may also be referred to as a pilot (Pilot), a pilot signal, or the like according to applicable standards.
  • a component carrier CC, Component Carrier
  • CC Component Carrier
  • the information, parameters, and the like described in the present specification may be expressed by absolute values, may be represented by relative values with predetermined values, or may be represented by other corresponding information.
  • wireless resources can be indicated by a specified index.
  • the formula or the like using these parameters may be different from those explicitly disclosed in the present specification.
  • the information, signals, and the like described in this specification can be expressed using any of a variety of different techniques.
  • data, commands, instructions, information, signals, bits, symbols, chips, etc. which may be mentioned in all of the above description, may pass voltage, current, electromagnetic waves, magnetic fields or magnetic particles, light fields or photons, or any of them. Combined to represent.
  • information, signals, and the like may be output from the upper layer to the lower layer, and/or from the lower layer to the upper layer.
  • Information, signals, etc. can be input or output via a plurality of network nodes.
  • Information or signals input or output can be stored in a specific place (such as memory) or managed by a management table. Input or output information, signals, etc. can be overwritten, updated or supplemented. The output information, signals, etc. can be deleted. The input information, signals, etc. can be sent to other devices.
  • the notification of the information is not limited to the mode/embodiment described in the specification, and may be performed by other methods.
  • the notification of the information may be through physical layer signaling (eg, Downlink Control Information (DCI), uplink control information (UCI, Uplink Control Information), upper layer signaling (eg, radio resource control (RRC, RadioResourceControl). Signaling, broadcast information (MIB (Master Information Block), System Information Block (SIB, System Information Block), etc.), Media Access Control (MAC, Medium Access Control) signaling, other signals, or a combination thereof.
  • DCI Downlink Control Information
  • UCI uplink control information
  • RRC RadioResourceControl
  • Signaling broadcast information (MIB (Master Information Block), System Information Block (SIB, System Information Block), etc.
  • MIB Master Information Block
  • SIB System Information Block
  • MAC Medium Access Control
  • the physical layer signaling may be referred to as L1/L2 (Layer 1/Layer 2) control information (L1/L2 control signal), L1 control information (L1 control signal), and the like.
  • the RRC signaling may also be referred to as an RRC message, and may be, for example, an RRC Connection Setup message, an RRC Connection Reconfiguration message, or the like.
  • the MAC signaling can be notified, for example, by a MAC Control Unit (MAC CE).
  • MAC CE MAC Control Unit
  • the notification of the predetermined information (for example, the notification of "ACK” or “NACK”) is not limited to being explicitly performed, and may be implicitly (for example, by not notifying the predetermined information or by notifying other information) )get on.
  • the determination can be performed by a value (0 or 1) represented by 1 bit, or by a true or false value (boolean value) represented by true (true) or false (false), and can also be compared by numerical values ( For example, comparison with a predetermined value).
  • Software whether referred to as software, firmware, middleware, microcode, hardware description language, or other names, should be interpreted broadly to mean commands, command sets, code, code segments, program code, programs, sub- Programs, software modules, applications, software applications, software packages, routines, subroutines, objects, executables, threads of execution, steps, functions, and the like.
  • software, commands, information, and the like may be transmitted or received via a transmission medium.
  • a transmission medium For example, when using wired technology (coax, fiber optic cable, twisted pair, digital subscriber line (DSL), etc.) and/or wireless technology (infrared, microwave, etc.) to send software from a website, server, or other remote source
  • wired technology coax, fiber optic cable, twisted pair, digital subscriber line (DSL), etc.
  • wireless technology infrared, microwave, etc.
  • base station (BS, BaseStation)
  • radio base station eNB
  • gNB gNodeB
  • cell a cell group
  • carrier a component carrier
  • the terms are used interchangeably.
  • the base station is sometimes referred to by a fixed station, a NodeB, an eNodeB (eNB), an access point, a transmission point, a reception point, a femto cell, a small cell, and the like.
  • a base station can accommodate one or more (eg, three) cells (also referred to as sectors). When the base station accommodates multiple cells, the entire coverage area of the base station can be divided into a plurality of smaller areas, and each smaller area can also pass through the base station subsystem (for example, a small indoor base station (RFH, remote head (RRH), RemoteRadioHead))) to provide communication services.
  • the term "cell” or “sector” refers to a portion or the entirety of the coverage area of a base station and/or base station subsystem that performs communication services in the coverage.
  • the base station is sometimes referred to by a fixed station, a NodeB, an eNodeB (eNB), an access point, a transmission point, a reception point, a femto cell, a small cell, and the like.
  • Mobile stations are also sometimes used by those skilled in the art as subscriber stations, mobile units, subscriber units, wireless units, remote units, mobile devices, wireless devices, wireless communication devices, remote devices, mobile subscriber stations, access terminals, mobile terminals, wireless Terminals, remote terminals, handsets, user agents, mobile clients, clients, or several other appropriate terms are used.
  • the wireless base station in this specification can also be replaced with a user terminal.
  • each mode/embodiment of the present invention can be applied to a configuration in which communication between a radio base station and a user terminal is replaced with communication between a plurality of user-to-device (D2D) devices.
  • D2D user-to-device
  • the function of the above-described wireless base station 10 can be regarded as a function of the user terminal 20.
  • words such as "upstream” and "downstream” can also be replaced with "side”.
  • the uplink channel can also be replaced with a side channel.
  • the user terminal in this specification can also be replaced with a wireless base station.
  • the function of the user terminal 20 described above can be regarded as a function of the wireless base station 10.
  • a specific operation performed by a base station is also performed by an upper node (upper node) depending on the situation.
  • various actions performed for communication with the terminal may pass through the base station and one or more network nodes other than the base station.
  • MME Mobility Management Entity
  • S-GW Serving-Gateway
  • S-GW Serving-Gateway
  • LTE Long Term Evolution
  • LTE-A Advanced Long Term Evolution
  • LTE-B Long Term Evolution
  • LTE-Beyond Long Term Evolution
  • SUPER 3G advanced international mobile communication
  • IMT-Advanced 4th generation mobile communication system
  • 4G 4th generation mobile communication system
  • 5G 5th generation mobile communication system
  • Future Radio Access FX
  • Future generation radio access GSM (registered trademark), Global System for Mobile communications), Code Division Multiple Access 2000 (CDMA2000), Super Mobile Broadband (UMB, Ultra) Mobile Broadband), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.20, Ultra Wideband (UWB, Ultra-W
  • any reference to a unit using the names "first”, “second”, etc., as used in this specification, does not fully limit the number or order of the units. These names can be used in this specification as a convenient method of distinguishing between two or more units. Thus, reference to a first element and a second element does not mean that only two elements may be employed or that the first element must prevail in the form of the second unit.
  • determination used in the present specification sometimes includes various actions. For example, regarding “judgment (determination)", calculation, calculation, processing, deriving, investigating, and lookingup (eg, tables, databases, or other data) may be performed. Search in the structure, ascertaining, etc. are considered to be “judgment (determination)”. Further, regarding “judgment (determination)”, reception (for example, reception of information), transmission (for example, transmission of information), input (input), output (output), and access (for example) may also be performed (for example, Accessing data in memory, etc. is considered to be “judgment (determination)”.
  • judgment (determination) it is also possible to consider “resolving”, “selecting”, selecting (choosing), establishing (comparing), comparing (comparing), etc. as “judging (determining)”. That is to say, regarding "judgment (determination)", several actions can be regarded as performing "judgment (determination)".
  • connection means any direct or indirect connection or combination between two or more units, This includes the case where there is one or more intermediate units between two units that are “connected” or “coupled” to each other.
  • the combination or connection between the units may be physical, logical, or a combination of the two.
  • connection can also be replaced with "access”.
  • two units may be considered to be electrically connected by using one or more wires, cables, and/or printed, and as a non-limiting and non-exhaustive example by using a radio frequency region.
  • the electromagnetic energy of the wavelength of the region, the microwave region, and/or the light is "connected” or "bonded” to each other.

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Abstract

本发明涉及一种基站间干扰协调信息的交互方法、用于减轻基站间交叉链路干扰的方法以及使用上述方法的基站。所述基站间干扰协调信息的交互方法，包括：确定基站的预定波束设置；建立指示所述预定波束设置中的每个波束及其对应状态的波束索引；以及将所述波束索引发送到其他基站。所述用于减轻基站间交叉链路干扰的方法，包括：接收来自其他基站的与波束相关联的干扰协调信息；基于所述干扰协调信息，确定与波束相关联的干扰状态信息；以及基于所述干扰状态信息，调整各波束的功率和/或调制编码方式。

Description

干扰协调信息交互方法、减轻交叉链路干扰的方法和基站 技术领域
本发明涉及移动通信领域，更具体地，本发明涉及一种基站间干扰协调信息的交互方法、用于减轻基站间交叉链路干扰的方法以及使用上述方法的基站。
背景技术
随着移动通信产业的发展以及对于移动数据业务需求的不断增长，人们对于移动通信的速率和服务质量(Qos)的要求越来越高。当前，网络多元化、宽带化、综合化、智能化的第五代移动通信技术(5G)标准正在制定并且走向应用。在用于实现移动通信的各个方案中，动态时分双工(TDD)方案通过使得每个基站的上行链路和下行链路发送方向动态改变以适应上下行业务的变化，从而实现了灵活的业务适应性。
然而，在动态TDD方案中，由于相邻基站在任何给定时间可能具有不同的发送方向(上行和下行)，从而引入新的干扰类型，即下行链路对上行链路的干扰(基站到基站的干扰)以及上行链路对下行链路的干扰(用户设备到用户设备的干扰)。特别地，由于基站的发送功率通常远高于用户设备的发送功率，并且由于基站的高度导致基站之间的路径损耗可能非常接近自由空间的路径损耗，因此下行链路对上行链路的交叉链路干扰(基站到基站的干扰)将严重损害上行链路的通信质量。
发明内容
鉴于上述问题，本发明提供一种基站间干扰协调信息的交互方法、用于减轻基站间交叉链路干扰的方法以及使用上述方法的基站。
根据本发明的一个实施例，提供了一种基站间干扰协调信息的交互方法，包括：确定基站的预定波束设置；建立指示所述预定波束设置中的每个波束及其对应状态的波束索引；以及将所述波束索引发送到其他基站。
根据本发明的另一个实施例，提供了一种用于减轻基站间交叉链路干扰的方法，包括：接收来自其他基站的与波束相关联的干扰协调信息；基于所述干扰协调信息，确定与波束相关联的干扰状态信息；以及基于所述干扰状 态信息，调整各波束的功率和/或调制编码方式。
根据本发明的又一个实施例，提供了一种基站，包括：干扰协调信息接收单元，用于接收来自其他基站的与波束相关联的干扰协调信息；干扰状态信息确定单元，用于基于所述干扰协调信息，确定与波束相关联的干扰状态信息；以及干扰调整单元，用于基于所述干扰状态信息，调整各波束的功率和/或调制编码方式。
根据本发明实施例的基站间干扰协调信息的交互方法、用于减轻基站间交叉链路干扰的方法以及使用上述方法的基站，通过配置波束级的基站间干扰协调信息，同时考虑波束级的干扰协调和功率限制，从而与仅考虑物理资源块级的干扰协调相比，进一步提高了频谱效率、资源利用率和***吞吐量。
附图说明
通过结合附图对本发明实施例进行更详细的描述，本发明的上述以及其它目的、特征和优势将变得更加明显。附图用来提供对本发明实施例的进一步理解，并且构成说明书的一部分，与本发明实施例一起用于解释本发明，并不构成对本发明的限制。在附图中，相同的参考标号通常代表相同部件或步骤。
图1是图示基站间交叉链路干扰的示意图；
图2是图示根据本发明实施例的基站间干扰协调信息的交互方法的流程图；
图3是图示根据本发明实施例的基站及其相关波束的示意图；
图4A和4B是图示根据本发明实施例的波束索引的第一示例格式的示意图；
图5A和5B是图示根据本发明实施例的波束索引的第二示例格式的示意图；
图6A到6C是图示根据本发明实施例的波束索引的第三示例格式的示意图；
图7A到7C是图示根据本发明实施例的波束索引的第四示例格式的示意图；
图8A到8C是图示根据本发明实施例的波束索引的第五示例格式的示意图；
图9是概述根据本发明实施例的用于减轻基站间交叉链路干扰的方法的流程图；
图10是进一步图示根据本发明实施例的用于减轻基站间交叉链路干扰的第一示例方法的流程图；
图11是图示应用根据本发明实施例的用于减轻基站间交叉链路干扰的第一示例方法的通信***示意图；
图12是进一步图示根据本发明实施例的用于减轻基站间交叉链路干扰的第二示例方法的流程图；
图13是图示应用根据本发明实施例的用于减轻基站间交叉链路干扰的第二示例方法的通信***示意图；
图14是进一步图示根据本发明实施例的用于减轻基站间交叉链路干扰的第三示例方法的流程图；
图15是图示应用根据本发明实施例的用于减轻基站间交叉链路干扰的第三示例方法的通信***示意图；
图16是图示根据本发明实施例的用于减轻基站间交叉链路干扰的方法的发送功率和调制编码方式调整的示意图；
图17是图示根据本发明实施例的基站的框图；以及
图18是图示根据本发明实施例的基站及用户设备的硬件构成的示例的框图。
具体实施方式
为了使得本发明的目的、技术方案和优点更为明显，下面将参照附图详细描述根据本发明的示例实施例。显然，所描述的实施例仅仅是本发明的一部分实施例，而不是本发明的全部实施例，应理解，本发明不受这里描述的示例实施例的限制。基于本发明中描述的本发明实施例，本领域技术人员在没有付出创造性劳动的情况下所得到的所有其它实施例都应落入本发明的保护范围之内。
图1是概述根据本发明实施例的通信***的示意图。如图1所示，在特定时刻t处，基站100a执行下行链路通信，向用户设备200a发送数据，同时基站100b执行上行链路通信，从用户设备200b接收数据。此时，可能存在DL到UL(即，gNB到gNB)的干扰以及UL到DL(即，UE到UE)的 干扰。其中，由于基站100a的发送功率通常远高于用户设备200b的发送功率，并且由于基站的高度导致基站之间的路径损耗可能非常接近自由空间的路径损耗，基站100a对基站100b的交叉链路干扰将严重损害基站100b的通信质量。因此，本发明提供一种用于减轻基站间交叉链路干扰的方法。具体地，在根据本发明的用于减轻基站间交叉链路干扰的方法中，需要实现基站间干扰协调信息的交互，本发明进一步提供了基站间干扰协调信息的交互方法以及配置用于该交互方法的波束级的基站间干扰协调信息。以下，将参照附图进行详细描述。
图2是图示根据本发明实施例的基站间干扰协调信息的交互方法的流程图。如图2所示，根据本发明实施例的基站间干扰协调信息的交互方法包括以下步骤。
在步骤S201中，确定基站的预定波束设置。在本发明的一个实施例中，基站首先确定可用于上行链路和下行链路通信的波束设置。此后，处理进到步骤S202。
在步骤S202中，建立指示预定波束设置中的每个波束及其对应状态的波束索引。在本发明的一个实施例中，每个波束的对应状态可以用于指示每个波束是否被使用或者每个波束的受干扰程度。更具体地，如下将参照附图详细描述的，波束的对应状态可以对于特定物理资源块，指示每个波束是否被使用或者每个波束的受干扰程度；波束的对应状态可以指示每个波束对应的干扰功率、和/或允许的受干扰功率、和/或每个波束对应于不同调制编码方式的允许的受干扰功率；波束的对应状态可以指示包括预定数目的波束的每个波束分组对应的干扰功率、和/或允许的受干扰功率、和/或每个波束分组对应于不同调制编码方式的允许的受干扰功率；以及波束的对应状态还可以指示由每个波束构成的预定波束索引序列中的每个序列元素对应的干扰功率、和/或允许的受干扰功率、和/或每个序列元素对应于不同调制编码方式的允许的受干扰功率，其中每个序列元素包括一个或多个波束。此后，处理进到步骤S203。
在步骤S203中，将波束索引发送到其他基站。在本发明的一个实施例中，波束索引是基站间干扰协调信息的组成部分。在发送自身的包括波束索引基站间干扰协调信息以及从相邻基站接收基站间干扰协调信息之后，上行链路基站以及下行链路基站都可以确定当前的干扰状态信息，以及进一步基 于该干扰状态信息执行发送功率和/或调制编码方法的调节。
图3是图示根据本发明实施例的基站及其相关波束的示意图。如图3所示，基站300a通过波束1a到4a与用户设备执行下行链路数据通信，同时基站300b通过波束1b到3b与用户设备执行上行链路数据通信。如前所述，基站300a通过波束1a到4a的每一个的下行链路数据通信可能对于基站300b通过波束1b到3b的每一个的上行链路数据通信产生干扰。为了减轻基站300a与基站300b之间的交叉链路干扰，需要在基站300a与基站300b执行以上参照图2描述的基站间干扰协调信息的交互。
图4A和4B是图示根据本发明实施例的波束索引的第一示例格式的示意图。如图4A和4B所示的基站间干扰协调信息中的波束索引的第一示例格式，波束索引的内容指示每个波束是否被使用或者每个波束的受干扰程度。具体地，对于发送波束，Tx波束索引的内容HII用于指示该波束是否被使用。例如，在HII取值为“1”时，指示该波束被使用，而在HII取值为“0”时，指示该波束未被使用。对于接收波束，Rx波束索引的内容OI用于指示该波束受干扰程度。例如，OI可以分为三个水平，分别指示低干扰水平、中等干扰水平和高干扰水平。
图5A和5B是图示根据本发明实施例的波束索引的第二示例格式的示意图。与如图4A和4B所示的波束索引的第一示例格式相比，根据本发明实施例的波束索引的第二示例格式中的波束索引的内容对于特定物理资源块(RB)，指示每个波束是否被使用或者每个波束的受干扰程度。根据本发明实施例的波束索引的第二示例格式中的波束索引中HII和OI的含义与第一示例格式相同，在此将省略其重复描述。
图6A到6C是图示根据本发明实施例的波束索引的第三示例格式的示意图。与参照图4A到图5B描述的第一和第二示例格式不同，根据本发明实施例的波束索引的第三示例格式中的波束索引的内容用于指示与量化的干扰功率相关的信息。例如，图6A中的波束索引的内容P 1到P N指示对应于每个波束允许的受干扰功率的量化功率；图6B中的波束索引的内容P 1，MCS到P N，MCS指示每个波束对应于不同调制编码方式(MCS)的允许的受干扰功率的量化功率；图6C中的波束索引的内容P’ 1到P’ N指示每个波束对应于干扰功率的量化功率。
图7A到7C是图示根据本发明实施例的波束索引的第四示例格式的示 意图。根据本发明实施例的波束索引的第四示例格式中的波束索引在第三示例格式的基础上，进一步考虑大规模MIMO应用场景中执行波束分组索引的情况。如图7A到7C中的每个波束分组可以包括多个波束，例如波束分组1可以包括波束0到N 1，波束分组2可以包括波束N 1+1到N 2，以此类推，波束分组K可以包括波束N K-1+1到N K。进一步地，图7A中的波束索引的内容P 1到P K指示对应于每个波束分组允许的受干扰功率的量化功率；图7B中的波束索引的内容P 1，MCS到P K，MCS指示每个波束分组对应于不同调制编码方式(MCS)的允许的受干扰功率的量化功率；图7C中的波束索引的内容P’ 1到P’ K指示每个波束分组对应于干扰功率的量化功率。
图8A到8C是图示根据本发明实施例的波束索引的第五示例格式的示意图。为了进一步降低基站间用户交互信息的信令开销，可以考虑根据预定波束索引序列的波束索引方式，其中每个序列元素包括一个或多个波束。这种预定波束索引序列对于所有基站是已知的，因此接收到波束索引的基站可以基于预定的索引序列得到相应的波束或者波束分组的与量化的干扰功率相关的信息。例如，图8A中的波束索引的内容P 1到P N指示对应于预定波束索引序列中的每个序列元素允许的受干扰功率的量化功率；图8B中的波束索引的内容P 1，QPSK到P N，MCS指示预定波束索引序列中的每个序列元素对应于不同调制编码方式(MCS)的允许的受干扰功率的量化功率；图8C中的波束索引的内容P’ 1到P’ K指示预定波束索引序列中的每个序列元素对应于干扰功率的量化功率。
以上，参照图2到图8C描述了根据本发明实施例的波束索引及其交互方法。以下，将进一步参照附图描述利用该波束索引的用于减轻基站间交叉链路干扰的方法。
图9是概述根据本发明实施例的用于减轻基站间交叉链路干扰的方法的流程图。如图9所示，根据本发明实施例的用于减轻基站间交叉链路干扰的方法包括以下步骤。
在步骤S901中，接收来自其他基站的与波束相关联的干扰协调信息。在本发明的实施例中，如下将详细描述的，与波束相关联的干扰协调信息包括以下的一个或多个：基站的波束索引信息、物理资源块配置信息、每个波束对应的允许的受干扰功率信息(对于上行链路基站)、以及每个波束对应的干扰功率信息(对于下行链路基站)。其中，基站的波束索引信息可以采 用如上参照图4A到图8C描述的第一到第五波束索引格式。此后，处理进到步骤S902。
在步骤S902中，基于干扰协调信息，确定与波束相关联的干扰状态信息。在本发明的实施例中，如下将详细描述的，干扰状态信息包括以下的一个或多个：上行链路基站的每个波束在不同调制编码方式下，对于下行链路基站的允许的受干扰功率；下行链路基站的每个波束对于上行链路基站的每个波束的干扰功率；下行链路基站的每个波束对于上行链路基站的总的干扰功率；以及下行链路基站对于上行链路基站的每个波束的总的干扰功率。此后，处理进到步骤S903。
在步骤S903中，基于干扰状态信息，调整各波束的功率和/或调制编码方式。在本发明的实施例中，如下将详细描述的，下行链路基站可以基于干扰状态信息调整各波束的功率，上行链路基站可以基于干扰状态信息调制编码方式，或者上行链路基站和下行链路基站可以基于干扰状态信息执行协同的调节。
图10是进一步图示根据本发明实施例的用于减轻基站间交叉链路干扰的第一示例方法的流程图；图11是图示应用根据本发明实施例的用于减轻基站间交叉链路干扰的第一示例方法的通信***示意图。如图10和图11所示的第一示例方法是由下行链路基站执行的。
在步骤S1001中，接收来自其他基站的与波束相关联的干扰协调信息。在该第一示例方法中，参照图11所示，下行链路基站300a接收来自上行链路基站300b的干扰协调信息400b，该干扰协调信息400b可以包括上行链路基站300b的波束索引信息、物理资源块配置信息、每个波束对应的允许的受干扰功率信息。此后，处理进到步骤S1002。
在步骤S1002中，基于干扰协调信息，确定与波束相关联的干扰状态信息。在该第一示例方法中，与波束相关联的干扰状态信息包括：(1)上行链路基站的每个波束在给定调制编码方式下，对于下行链路基站的允许的受干扰功率；(2)下行链路基站的每个波束对于上行链路基站的每个波束的干扰功率；(3)下行链路基站的每个波束对于上行链路基站的总的干扰功率。
具体地，在波束相关联的干扰状态信息的计算中，预先设置如下参数：
·j：目标被干扰基站索引
·i：干扰基站索引
·j’：除了目标干扰基站之外的其他干扰基站的索引。
·k：目标接收波束索引
·k *：除了目标接收波束以外的其他接收波束索引
·k’：发送波束索引
(1)上行链路基站的每个波束在给定调制编码方式下，对于下行链路基站的允许的受干扰功率通过表达式(1)到表达式(5)计算：
Figure PCTCN2018085419-appb-000001
其中，
Figure PCTCN2018085419-appb-000002
表示基站j的用户在第k个波束上的信干噪比(SINR)要求，
Figure PCTCN2018085419-appb-000003
表示基站j的用户在第k个波束上的传输速率要求，并且B表示传输带宽。
Figure PCTCN2018085419-appb-000004
其中，
Figure PCTCN2018085419-appb-000005
表示基站j的用户在第k个波束的接收功率，
Figure PCTCN2018085419-appb-000006
表示基站j的用户在第k个波束上的均衡矩阵，
Figure PCTCN2018085419-appb-000007
表示基站j的用户在第k个波束上的信道，并且
Figure PCTCN2018085419-appb-000008
表示基站j的用户在第k个波束上的发送功率。
Figure PCTCN2018085419-appb-000009
其中，
Figure PCTCN2018085419-appb-000010
表示基站i的第k’个波束到基站j的第k个波束的干扰功率，
Figure PCTCN2018085419-appb-000011
表示基站j’的第k’个波束到基站j的第k个波束的干扰功率，
Figure PCTCN2018085419-appb-000012
表示基站j的第k *个波束到基站j的第k个波束的干扰功率，N O表示噪声功率。
Figure PCTCN2018085419-appb-000013
其中，
Figure PCTCN2018085419-appb-000014
表示基站j的第k个波束的总的允许受干扰功率。
Figure PCTCN2018085419-appb-000015
其中，
Figure PCTCN2018085419-appb-000016
表示基站j的第k个波束对于基站i的总的允许的干扰功率，
Figure PCTCN2018085419-appb-000017
表示基站j的第k个波束上允许的来自基站i的第k’个波束的干扰功率，RSRP ij表示基站i到基站j的接收信号参考功率。
(2)下行链路基站的每个波束对于上行链路基站的每个波束的干扰功率通过表达式(6)计算：
Figure PCTCN2018085419-appb-000018
其中，P k′k表示基站i的第k’个波束对基站j的第k个波束的干扰功率，
Figure PCTCN2018085419-appb-000019
表示基站i的第k’个波束上的发送功率，
Figure PCTCN2018085419-appb-000020
表示基站j的用户在第k个波束上的均衡矩阵，
Figure PCTCN2018085419-appb-000021
表示基站i的第k’个波束到基站j的第k个波束的信道矩阵，
Figure PCTCN2018085419-appb-000022
表示基站i在第k’个波束上的发送预编码矩阵。
(3)下行链路基站的每个波束对于上行链路基站的总的干扰功率通过表达式(7-1)计算：
Figure PCTCN2018085419-appb-000023
其中，P k′表示基站i的第k’个波束对基站j的总的干扰功率，P k′k表示基站i的第k’个波束对基站j的第k个波束的干扰功率。
在步骤S1002中确定干扰状态信息之后，处理进到步骤S1003。
在步骤S1003中，下行链路基站基于每个波束对于上行链路基站的总的干扰功率，生成包括下行链路基站的每个波束对应的优先级的列表。在该第一示例方法中，下行链路基站300a为对于上行链路基站300b具有较低的总的干扰功率的波束分配更高的优先级。此后，处理进到步骤S1004。
在步骤S1004中，基于上行链路基站的允许的受干扰功率，根据下行链路基站的每个波束对应的优先级，调整下行链路基站的波束的发送功率。在该第一示例方法中，下行链路基站300a根据表达式(8)，调整具有最低优先级的波束的发送功率。
Figure PCTCN2018085419-appb-000024
其中，
Figure PCTCN2018085419-appb-000025
表示基站i在第k’个波束上的发送功率，
Figure PCTCN2018085419-appb-000026
表示基站j的第k个波束对于基站i的总的允许的干扰功率，P k′，k表示基站i的第k’个波束对基站j的第k个波束的干扰功率，
Figure PCTCN2018085419-appb-000027
表示基站j的用户在第k个波束上的均衡矩阵，
Figure PCTCN2018085419-appb-000028
表示基站i的第k’个波束到基站j的第k个波束的信道矩阵，
Figure PCTCN2018085419-appb-000029
表示基站i在第k’个波束上的发送预编码矩阵。
图12是进一步图示根据本发明实施例的用于减轻基站间交叉链路干扰的第二示例方法的流程图；图13是图示应用根据本发明实施例的用于减轻基站间交叉链路干扰的第二示例方法的通信***示意图。如图12和图13所示的第二示例方法是由上行链路基站执行的。
在步骤S1201中，接收来自其他基站的与波束相关联的干扰协调信息。在该第二示例方法中，参照图13所示，上行链路基站300b接收来自下行链路基站300a的干扰协调信息400a，该干扰协调信息400a可以包括下行链路基站300a的波束索引信息、物理资源块配置信息、每个波束对于上行链路基站300b的干扰功率信息。此后，处理进到步骤S1202。
在步骤S1202中，基于干扰协调信息，确定与波束相关联的干扰状态信息。在该第二示例方法中，与波束相关联的干扰状态信息包括：(1)上行链路基站的每个波束在不同调制编码方式下，对于下行链路基站的允许的受干扰功率；(2)下行链路基站的每个波束对于上行链路基站的每个波束的干扰功率；(4)下行链路基站的对于上行链路基站的每个波束的总的干扰功率。
其中，(4)下行链路基站的对于上行链路基站的每个波束的总的干扰功率通过表达式(7-2)计算：
Figure PCTCN2018085419-appb-000030
其中，P k表示基站i对基站j的第k个波束的总的干扰功率，P k′k表示基站i的第k’个波束对基站j的第k个波束的干扰功率。
在步骤S1202中确定干扰状态信息之后，处理进到步骤S1203。
在步骤S1203中，基于下行链路基站的干扰功率，根据上行链路基站的允许的受干扰功率，调整上行链路基站的每个波束的调制编码方式。在该第二示例方法中，上行链路基站300b可以调整其波束的调制编码方式，对于存在较大干扰的波束，选择选择更低阶的调制编码方式。
图14是进一步图示根据本发明实施例的用于减轻基站间交叉链路干扰的第三示例方法的流程图；图15是图示应用根据本发明实施例的用于减轻基站间交叉链路干扰的第三示例方法的通信***示意图。如图14和图15所示的第三示例方法是由上行链路基站和下行链路基站交互执行。
在步骤S1401中，接收来自其他基站的与波束相关联的干扰协调信息。在该第三示例方法中，参照图15所示，下行链路基站300a接收来自上行链 路基站300b的干扰协调信息400b，该干扰协调信息400b可以包括上行链路基站300b的波束索引信息、物理资源块配置信息、每个波束对应的允许的受干扰功率信息。同时，上行链路基站300b接收来自下行链路基站300a的干扰协调信息400a，该干扰协调信息400a可以包括下行链路基站300a的波束索引信息、物理资源块配置信息、每个波束对于上行链路基站300b的干扰功率信息。此后，处理进到步骤S1402。
在步骤S1402中，基于干扰协调信息，确定与波束相关联的干扰状态信息。在该第三示例方法中，通过以上参照图10到图13描述的表达式(1)到表达式(7-2)，计算波束相关联的干扰状态信息。此后，处理进到步骤S1403。
在步骤S1403中，下行链路基站基于每个波束对于上行链路基站的总的干扰功率，生成包括下行链路基站的每个波束对应的优先级的列表。与第一示例方法相同，下行链路基站300a为对于上行链路基站300b具有较低的总的干扰功率的波束分配更高的优先级。此后，处理进到步骤S1404。
在步骤S1404中，基于上行链路基站的允许的受干扰功率，根据下行链路基站的每个波束对应的优先级，调整下行链路基站的波束的发送功率和/或调整上行链路基站的每个波束的调制编码方式。在该第三示例方法中，下行链路基站300a调整下行链路基站的波束的发送功率以及上行链路基站300b调整上行链路基站的波束的调制编码方式的方式与以上参照图10和图12描述的步骤S1004和S1203分别相同。
进一步地，在该第三示例方法中，可以根据实际通信的需要，在调整下行链路基站的波束的发送功率和调整上行链路基站的波束的调制编码方式之间进行折衷，以同时满足各个基站的及其与用户设备的通信需求。
图16是图示根据本发明实施例的用于减轻基站间交叉链路干扰的方法的发送功率和调制编码方式调整的示意图。
如图16所示，对于Rx波束1，当采用64QAM调制编码方式时，下行链路基站的Tx波束1到4对Rx波束1总的干扰功率大于Rx波束1允许的受干扰功率。此时，一种可行的方式是调整Rx波束1的调制编码方式，如图16所示，当Rx波束1采用16QAM和QPSK调制编码方式时，都可以满足允许的受干扰功率的需求。可替代地，还可以降低下行链路基站的Tx波束4(对Rx波束1具有最大干扰功率)的发送功率，从而降低Rx波束1总的受干扰功率，以满足允许的受干扰功率的需求。
对于Rx波束2，采用64QAM、16QAM和QPSK调制编码方式都无法实现16QAM和QPSK调制编码方式，此时需要降低下行链路基站的Tx波束4(对Rx波束1具有最大干扰功率)的发送功率，从而降低Rx波束1总的受干扰功率，以满足允许的受干扰功率的需求。
类似地，对于Rx波束3，在采用64QAM、16QAM和QPSK调制编码方式的情况下，都能满足允许的受干扰功率的需求，从而无需降低下行链路基站的Tx波束的发送功率。
以上，参照附图描述了根据本发明实施例的用于减轻基站间交叉链路干扰的方法，以下将进一步参照附图描述采用该减轻基站间交叉链路干扰的方法的根据本发明实施例的基站。
图17是图示根据本发明实施例的基站的框图。如图17所示，根据本发明实施例的基站1700包括干扰协调信息接收单元1701、干扰状态信息确定单元1702以及干扰调整单元1703。
具体地，干扰协调信息接收单元1701用于接收来自其他基站的与波束相关联的干扰协调信息。干扰状态信息确定单元1702用于基于所述干扰协调信息，确定与波束相关联的干扰状态信息。干扰调整单元1703用于基于所述干扰状态信息，调整各波束的功率和/或调制编码方式。干扰协调信息接收单元1701接收的干扰协调信息包括以下的一个或多个：基站的波束索引信息、物理资源块配置信息、每个波束对应的允许的受干扰功率信息、以及每个波束对应的干扰功率。干扰状态信息确定单元1702确定的干扰状态信息包括以下的一个或多个：上行链路基站的每个波束在不同调制编码方式下，对于下行链路基站的允许的受干扰功率；下行链路基站的每个波束对于上行链路基站的每个波束的干扰功率；下行链路基站的每个波束对于上行链路基站的总的干扰功率；以及下行链路基站对于上行链路基站的每个波束的总的干扰功率。
进一步地，当配置在下行链路基站中时，所述干扰调整单元1703基于每个波束对于上行链路基站的总的干扰功率，生成包括下行链路基站的每个波束对应的优先级的列表；以及基于上行链路基站的允许的受干扰功率，根据下行链路基站的每个波束对应的优先级，调整波束的发送功率。当配置在上行链路基站中时，所述干扰调整单元1703基于下行链路基站的干扰功率，根据上行链路基站的允许的受干扰功率，调整每个波束的调制编码方式。
上述实施例的说明中使用的框图示出了以功能为单位的块。这些功能块(结构单元)通过硬件和/或软件的任意组合来实现。此外，各功能块的实现手段并不特别限定。即，各功能块可以通过在物理上和/或逻辑上相结合的一个装置来实现，也可以将在物理上和/或逻辑上相分离的两个以上装置直接地和/或间接地(例如通过有线和/或无线)连接从而通过上述多个装置来实现。
例如，本发明的实施例中的基站、用户设备等可以作为执行本发明的无线通信方法的处理的计算机来发挥功能。图18是图示根据本发明实施例的基站及用户设备的硬件构成的示例的框图。上述的基站10和用户设备20可以作为在物理上包括处理器1001、内存1002、存储器1003、通信装置1004、输入装置1005、输出装置1006、总线1007等的计算机装置来构成。
另外，在以下的说明中，“装置”这样的文字也可替换为电路、设备、单元等。基站10和用户设备20的硬件结构可以包括一个或多个图中所示的各装置，也可以不包括部分装置。
例如，处理器1001仅图示出一个，但也可以为多个处理器。此外，可以通过一个处理器来执行处理，也可以通过一个以上的处理器同时、依次、或采用其它方法来执行处理。另外，处理器1001可以通过一个以上的芯片来安装。
基站10和用户设备20中的各功能例如通过如下方式实现：通过将规定的软件(程序)读入到处理器1001、内存1002等硬件上，从而使处理器1001进行运算，对由通信装置1004进行的通信进行控制，并对内存1002和存储器1003中的数据的读出和/或写入进行控制。
处理器1001例如使操作***进行工作从而对计算机整体进行控制。处理器1001可以由包括与周边装置的接口、控制装置、运算装置、寄存器等的中央处理器(CPU，Central Processing Unit)构成。例如，上述的接收控制单元103、重发控制单元203等可以通过处理器1001实现。
此外，处理器1001将程序(程序代码)、软件模块、数据等从存储器1003和/或通信装置1004读出到内存1002，并根据它们执行各种处理。作为程序，可以采用使计算机执行在上述实施方式中说明的动作中的至少一部分的程序。例如，用户设备20的重发控制单元203可以通过保存在内存1002中并通过处理器1001来工作的控制程序来实现，对于其它功能块，也可以同样地来实现。内存1002是计算机可读取记录介质，例如可以由只读存储 器(ROM，ReadOnlyMemory)、可编程只读存储器(EPROM，ErasableProgrammableROM)、电可编程只读存储器(EEPROM，ElectricallyEPROM)、随机存取存储器(RAM，RandomAccessMemory)、其它适当的存储介质中的至少一个来构成。内存1002也可以称为寄存器、高速缓存、主存储器(主存储装置)等。内存1002可以保存用于实施本发明的一实施方式所涉及的无线通信方法的可执行程序(程序代码)、软件模块等。
存储器1003是计算机可读取记录介质，例如可以由软磁盘(flexible disk)、软(注册商标)盘(floppy disk)、磁光盘(例如，只读光盘(CD-ROM(CompactDiscROM)等)、数字通用光盘、蓝光(Blu-ray，注册商标)光盘)、可移动磁盘、硬盘驱动器、智能卡、闪存设备(例如，卡、棒(stick)、密钥驱动器(key driver))、磁条、数据库、服务器、其它适当的存储介质中的至少一个来构成。存储器1003也可以称为辅助存储装置。
通信装置1004是用于通过有线和/或无线网络进行计算机间的通信的硬件(发送接收设备)，例如也称为网络设备、网络控制器、网卡、通信模块等。通信装置1004为了实现例如频分双工(FDD，FrequencyDivisionDuplex)和/或时分双工(TDD，TimeDivisionDuplex)，可以包括高频开关、双工器、滤波器、频率合成器等。例如，上述的发送单元101、接收单元102、接收单元201、发送单元202等可以通过通信装置1004来实现。
输入装置1005是接受来自外部的输入的输入设备(例如，键盘、鼠标、麦克风、开关、按钮、传感器等)。输出装置1006是实施向外部的输出的输出设备(例如，显示器、扬声器、发光二极管(LED，LightEmittingDiode)灯等)。另外，输入装置1005和输出装置1006也可以为一体的结构(例如触控面板)。
此外，处理器1001、内存1002等各装置通过用于对信息进行通信的总线1007连接。总线1007可以由单一的总线构成，也可以由装置间不同的总线构成。
此外，基站10和用户设备20可以包括微处理器、数字信号处理器(DSP，DigitalSignalProcessor)、专用集成电路(ASIC，ApplicationSpecificIntegratedCircuit)、可编程逻辑器件(PLD，ProgrammableLogicDevice)、现场可编程门阵列(FPGA， FieldProgrammableGateArray)等硬件，可以通过该硬件来实现各功能块的部分或全部。例如，处理器1001可以通过这些硬件中的至少一个来安装。
以上，参照图1到图18描述了根据本发明实施例的基站间干扰协调信息的交互方法、用于减轻基站间交叉链路干扰的方法以及使用上述方法的基站，通过配置波束级的基站间干扰协调信息，同时考虑波束级的干扰协调和功率限制，从而与仅考虑物理资源块级的干扰协调相比，进一步提高了频谱效率、资源利用率和***吞吐量。
另外，关于本说明书中说明的用语和/或对本说明书进行理解所需的用语，可以与具有相同或类似含义的用语进行互换。例如，信道和/或符号也可以为信号(信令)。此外，信号也可以为消息。参考信号也可以简称为RS(ReferenceSignal)，根据所适用的标准，也可以称为导频(Pilot)、导频信号等。此外，分量载波(CC，ComponentCarrier)也可以称为小区、频率载波、载波频率等。
此外，本说明书中说明的信息、参数等可以用绝对值来表示，也可以用与规定值的相对值来表示，还可以用对应的其它信息来表示。例如，无线资源可以通过规定的索引来指示。进一步地，使用这些参数的公式等也可以与本说明书中明确公开的不同。
在本说明书中用于参数等的名称在任何方面都并非限定性的。例如，各种各样的信道(物理上行链路控制信道(PUCCH，PhysicalUplink ControlChannel)、物理下行链路控制信道(PDCCH，PhysicalDownlink ControlChannel)等)和信息单元可以通过任何适当的名称来识别，因此为这些各种各样的信道和信息单元所分配的各种各样的名称在任何方面都并非限定性的。
本说明书中说明的信息、信号等可以使用各种各样不同技术中的任意一种来表示。例如，在上述的全部说明中可能提及的数据、命令、指令、信息、信号、比特、符号、芯片等可以通过电压、电流、电磁波、磁场或磁性粒子、光场或光子、或者它们的任意组合来表示。
此外，信息、信号等可以从上层向下层、和/或从下层向上层输出。信息、信号等可以经由多个网络节点进行输入或输出。
输入或输出的信息、信号等可以保存在特定的场所(例如内存)，也可以通过管理表进行管理。输入或输出的信息、信号等可以被覆盖、更新或补 充。输出的信息、信号等可以被删除。输入的信息、信号等可以被发往其它装置。
信息的通知并不限于本说明书中说明的方式/实施方式，也可以通过其它方法进行。例如，信息的通知可以通过物理层信令(例如，下行链路控制信息(DCI，DownlinkControlInformation)、上行链路控制信息(UCI，UplinkControlInformation))、上层信令(例如，无线资源控制(RRC，RadioResourceControl)信令、广播信息(主信息块(MIB，MasterInformationBlock)、***信息块(SIB，SystemInformationBlock)等)、媒体存取控制(MAC，MediumAccessControl)信令)、其它信号或者它们的组合来实施。
另外，物理层信令也可以称为L1/L2(第1层/第2层)控制信息(L1/L2控制信号)、L1控制信息(L1控制信号)等。此外，RRC信令也可以称为RRC消息，例如可以为RRC连接建立(RRC Connection Setup)消息、RRC连接重配置(RRC Connection Reconfiguration)消息等。此外，MAC信令例如可以通过MAC控制单元(MAC CE(Control Element))来通知。
此外，规定信息的通知(例如，“ACK”、“NACK”的通知)并不限于显式地进行，也可以隐式地(例如，通过不进行该规定信息的通知，或者通过其它信息的通知)进行。
关于判定，可以通过由1比特表示的值(0或1)来进行，也可以通过由真(true)或假(false)表示的真假值(布尔值)来进行，还可以通过数值的比较(例如与规定值的比较)来进行。
软件无论被称为软件、固件、中间件、微代码、硬件描述语言，还是以其它名称来称呼，都应宽泛地解释为是指命令、命令集、代码、代码段、程序代码、程序、子程序、软件模块、应用程序、软件应用程序、软件包、例程、子例程、对象、可执行文件、执行线程、步骤、功能等。
此外，软件、命令、信息等可以经由传输介质被发送或接收。例如，当使用有线技术(同轴电缆、光缆、双绞线、数字用户线路(DSL，DigitalSubscriberLine)等)和/或无线技术(红外线、微波等)从网站、服务器、或其它远程资源发送软件时，这些有线技术和/或无线技术包括在传输介质的定义内。
本说明书中使用的“***”和“网络”这样的用语可以互换使用。
在本说明书中，“基站(BS，BaseStation)”、“无线基站”、“eNB”、“gNB”、“小区”、“扇区”、“小区组”、“载波”以及“分量载波”这样的用语可以互换使用。基站有时也以固定台(fixedstation)、NodeB、eNodeB(eNB)、接入点(accesspoint)、发送点、接收点、毫微微小区、小小区等用语来称呼。
基站可以容纳一个或多个(例如三个)小区(也称为扇区)。当基站容纳多个小区时，基站的整个覆盖区域可以划分为多个更小的区域，每个更小的区域也可以通过基站子***(例如，室内用小型基站(射频拉远头(RRH，RemoteRadioHead)))来提供通信服务。“小区”或“扇区”这样的用语是指在该覆盖中进行通信服务的基站和/或基站子***的覆盖区域的一部分或整体。
在本说明书中，“移动台(MS，MobileStation)”、“用户终端(userterminal)”、“用户装置(UE，UserEquipment)”以及“终端”这样的用语可以互换使用。基站有时也以固定台(fixedstation)、NodeB、eNodeB(eNB)、接入点(accesspoint)、发送点、接收点、毫微微小区、小小区等用语来称呼。
移动台有时也被本领域技术人员以用户台、移动单元、用户单元、无线单元、远程单元、移动设备、无线设备、无线通信设备、远程设备、移动用户台、接入终端、移动终端、无线终端、远程终端、手持机、用户代理、移动客户端、客户端或者若干其它适当的用语来称呼。
此外，本说明书中的无线基站也可以用用户终端来替换。例如，对于将无线基站和用户终端间的通信替换为多个用户终端间(D2D，Device-to-Device)的通信的结构，也可以应用本发明的各方式/实施方式。此时，可以将上述的无线基站10所具有的功能当作用户终端20所具有的功能。此外，“上行”和“下行”等文字也可以替换为“侧”。例如，上行信道也可以替换为侧信道。
同样，本说明书中的用户终端也可以用无线基站来替换。此时，可以将上述的用户终端20所具有的功能当作无线基站10所具有的功能。
在本说明书中，设为通过基站进行的特定动作根据情况有时也通过其上级节点(uppernode)来进行。显然，在具有基站的由一个或多个网络节点(networknodes)构成的网络中，为了与终端间的通信而进行的各种各样的动作可以通过基站、除基站之外的一个以上的网络节点(可以考虑例如移动管理实体(MME，MobilityManagementEntity)、服务网关(S-GW，Serving-Gateway)等，但不限于此)、或者它们的组合来进行。
本说明书中说明的各方式/实施方式可以单独使用，也可以组合使用，还可以在执行过程中进行切换来使用。此外，本说明书中说明的各方式/实施方式的处理步骤、序列、流程图等只要没有矛盾，就可以更换顺序。例如，关于本说明书中说明的方法，以示例性的顺序给出了各种各样的步骤单元，而并不限定于给出的特定顺序。
本说明书中说明的各方式/实施方式可以应用于利用长期演进(LTE，LongTermEvolution)、高级长期演进(LTE-A，LTE-Advanced)、超越长期演进(LTE-B，LTE-Beyond)、超级第3代移动通信***(SUPER 3G)、高级国际移动通信(IMT-Advanced)、第4代移动通信***(4G，4th generation mobile communication system)、第5代移动通信***(5G，5th generation mobile communication system)、未来无线接入(FRA，Future Radio Access)、新无线接入技术(New-RAT，Radio Access Technology)、新无线(NR，New Radio)、新无线接入(NX，New radio access)、新一代无线接入(FX，Future generation radio access)、全球移动通信***(GSM(注册商标)，Global System for Mobile communications)、码分多址接入2000(CDMA2000)、超级移动宽带(UMB，Ultra Mobile Broadband)、IEEE 802.11(Wi-Fi(注册商标))、IEEE 802.16(WiMAX(注册商标))、IEEE 802.20、超宽带(UWB，Ultra-WideBand)、蓝牙(Bluetooth(注册商标))、其它适当的无线通信方法的***和/或基于它们而扩展的下一代***。
本说明书中使用的“根据”这样的记载，只要未在其它段落中明确记载，则并不意味着“仅根据”。换言之，“根据”这样的记载是指“仅根据”和“至少根据”这两者。
本说明书中使用的对使用“第一”、“第二”等名称的单元的任何参照，均非全面限定这些单元的数量或顺序。这些名称可以作为区别两个以上单元的便利方法而在本说明书中使用。因此，第一单元和第二单元的参照并不意味着仅可采用两个单元或者第一单元必须以若干形式占先于第二单元。
本说明书中使用的“判断(确定)(determining)”这样的用语有时包含多种多样的动作。例如，关于“判断(确定)”，可以将计算(calculating)、推算(computing)、处理(processing)、推导(deriving)、调查(investigating)、搜索(lookingup)(例如表、数据库、或其它数据结构中的搜索)、确认(ascertaining)等视为是进行“判断(确定)”。此外，关于“判断(确定)”， 也可以将接收(receiving)(例如接收信息)、发送(transmitting)(例如发送信息)、输入(input)、输出(output)、存取(accessing)(例如存取内存中的数据)等视为是进行“判断(确定)”。此外，关于“判断(确定)”，还可以将解决(resolving)、选择(selecting)、选定(choosing)、建立(establishing)、比较(comparing)等视为是进行“判断(确定)”。也就是说，关于“判断(确定)”，可以将若干动作视为是进行“判断(确定)”。
本说明书中使用的“连接的(connected)”、“结合的(coupled)”这样的用语或者它们的任何变形是指两个或两个以上单元间的直接的或间接的任何连接或结合，可以包括以下情况：在相互“连接”或“结合”的两个单元间，存在一个或一个以上的中间单元。单元间的结合或连接可以是物理上的，也可以是逻辑上的，或者还可以是两者的组合。例如，“连接”也可以替换为“接入”。在本说明书中使用时，可以认为两个单元是通过使用一个或一个以上的电线、线缆、和/或印刷电气连接，以及作为若干非限定性且非穷尽性的示例，通过使用具有射频区域、微波区域、和/或光(可见光及不可见光这两者)区域的波长的电磁能等，被相互“连接”或“结合”。
在本说明书或权利要求书中使用“包括(including)”、“包含(comprising)”、以及它们的变形时，这些用语与用语“具备”同样是开放式的。进一步地，在本说明书或权利要求书中使用的用语“或(or)”并非是异或。
以上对本发明进行了详细说明，但对于本领域技术人员而言，显然，本发明并非限定于本说明书中说明的实施方式。本发明在不脱离由权利要求书的记载所确定的本发明的宗旨和范围的前提下，可以作为修改和变更方式来实施。因此，本说明书的记载是以示例说明为目的，对本发明而言并非具有任何限制性的意义。

Claims (19)

  1. 一种基站间干扰协调信息的交互方法，包括：
    确定基站的预定波束设置；
    建立指示所述预定波束设置中的每个波束及其对应状态的波束索引；以及
    将所述波束索引发送到其他基站。
  2. 如权利要求1所述的交互方法，其中，所述状态指示每个波束是否被使用或者每个波束的受干扰程度。
  3. 如权利要求1或2所述的交互方法，其中，所述状态对于特定物理资源块，指示每个波束是否被使用或者每个波束的受干扰程度。
  4. 如权利要求1所述的交互方法，其中，所述状态指示每个波束对应的干扰功率、和/或允许的受干扰功率、和/或每个波束对应于不同调制编码方式的允许的受干扰功率。
  5. 如权利要求1所述的交互方法，其中，所述状态指示包括预定数目的波束的每个波束分组对应的干扰功率、和/或允许的受干扰功率、和/或每个波束分组对应于不同调制编码方式的允许的受干扰功率。
  6. 如权利要求1所述的交互方法，其中，所述状态指示由每个波束构成的预定波束索引序列中的每个序列元素对应的干扰功率、和/或允许的受干扰功率、和/或每个序列元素对应于不同调制编码方式的允许的受干扰功率，
    其中，每个序列元素包括一个或多个波束。
  7. 一种用于减轻基站间交叉链路干扰的方法，包括：
    接收来自其他基站的与波束相关联的干扰协调信息；
    基于所述干扰协调信息，确定与波束相关联的干扰状态信息；以及
    基于所述干扰状态信息，调整各波束的功率和/或调制编码方式。
  8. 如权利要求7所述的方法，其中，所述与波束相关联的干扰协调信息包括以下的一个或多个：
    基站的波束索引信息、物理资源块配置信息、每个波束对应的允许的受干扰功率信息、以及每个波束对应的干扰功率信息。
  9. 如权利要求8所述的方法，其中，所述干扰状态信息包括以下的一个或多个：
    上行链路基站的每个波束在不同调制编码方式下，对于下行链路基站的允许的受干扰功率；
    下行链路基站的每个波束对于上行链路基站的每个波束的干扰功率；
    下行链路基站的每个波束对于上行链路基站的总的干扰功率；以及
    下行链路基站对于上行链路基站的每个波束的总的干扰功率。
  10. 如权利要求9所述的方法，其中，所述基于所述干扰状态信息，调整各波束的功率和/或调制编码方式包括：
    下行链路基站基于每个波束对于上行链路基站的总的干扰功率，生成包括下行链路基站的每个波束对应的优先级的列表；以及
    基于上行链路基站的允许的受干扰功率，根据下行链路基站的每个波束对应的优先级，调整下行链路基站的波束的发送功率。
  11. 如权利要求9所述的方法，其中，所述基于所述干扰状态信息，调整各波束的功率和/或调制编码方式包括：
    基于下行链路基站的干扰功率，根据上行链路基站的允许的受干扰功率，调整上行链路基站的每个波束的调制编码方式。
  12. 如权利要求9所述的方法，其中，所述基于所述干扰状态信息，调整各波束的功率和/或调制编码方式包括：
    下行链路基站基于每个波束对于上行链路基站的总的干扰功率，生成包括下行链路基站的每个波束对应的优先级的列表；
    基于上行链路基站的允许的受干扰功率，根据下行链路基站的每个波束对应的优先级，调整下行链路基站的波束的发送功率和/或调整上行链路基站的每个波束的调制编码方式。
  13. 如权利要求8到12的任一项所述的方法，其中，所述波束索引信息指示每个波束及其对应状态，所述状态指示每个波束是否被使用或者每个波束的受干扰程度。
  14. 一种基站，包括：
    干扰协调信息接收单元，用于接收来自其他基站的与波束相关联的干扰协调信息；
    干扰状态信息确定单元，用于基于所述干扰协调信息，确定与波束相关联的干扰状态信息；以及
    干扰调整单元，用于基于所述干扰状态信息，调整各波束的功率和/或 调制编码方式。
  15. 如权利要求14所述的基站，其中，所述与波束相关联的干扰协调信息包括以下的一个或多个：
    基站的波束索引信息、物理资源块配置信息、每个波束对应的允许的受干扰功率信息、以及每个波束对应的干扰功率信息。
  16. 如权利要求15所述的基站，其中，所述干扰状态信息包括以下的一个或多个：
    上行链路基站的每个波束在不同调制编码方式下，对于下行链路基站的允许的受干扰功率；
    下行链路基站的每个波束对于上行链路基站的每个波束的干扰功率；
    下行链路基站的每个波束对于上行链路基站的总的干扰功率；以及
    下行链路基站对于上行链路基站的每个波束的总的干扰功率。
  17. 如权利要求16所述的基站，其中，所述干扰调整单元基于每个波束对于上行链路基站的总的干扰功率，生成包括下行链路基站的每个波束对应的优先级的列表；以及
    基于上行链路基站的允许的受干扰功率，根据下行链路基站的每个波束对应的优先级，调整波束的发送功率。
  18. 如权利要求16所述的基站，其中，所述干扰调整单元基于下行链路基站的干扰功率，根据上行链路基站的允许的受干扰功率，调整每个波束的调制编码方式。
  19. 如权利要求14到18的任一项所述的基站，其中，所述波束索引信息指示每个波束及其对应状态，所述状态指示每个波束是否被使用或者每个波束的受干扰程度。
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113438675A (zh) * 2021-06-24 2021-09-24 中国联合网络通信集团有限公司 一种干扰处理方法、装置及设备

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110896550A (zh) * 2018-09-12 2020-03-20 索尼公司 用于无线通信的电子设备和方法、计算机可读存储介质
WO2020155180A1 (zh) * 2019-02-03 2020-08-06 Oppo广东移动通信有限公司 无线通信的方法、终端设备和网络设备
CN111988068B (zh) * 2019-05-22 2021-12-03 华为技术有限公司 一种干扰抑制方法以及基站
US11240688B2 (en) * 2019-06-12 2022-02-01 Qualcomm Incorporated Over-the-air interference coordination among base stations
US11777568B2 (en) 2021-07-23 2023-10-03 Samsung Electronics Co., Ltd. PMI-based data beam nulling with a CSI report
CN113727365A (zh) * 2021-08-27 2021-11-30 中国联合网络通信集团有限公司 一种干扰控制方法及装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102123525A (zh) * 2010-01-07 2011-07-13 夏普株式会社 下行多天线多基站干扰协调方法和基站
CN102740436A (zh) * 2011-04-07 2012-10-17 华为技术有限公司 功率调整方法和基站
CN103765793A (zh) * 2011-08-12 2014-04-30 英特尔公司 无线通信***的相邻小区中对异步时分双工的支持
WO2015196455A1 (zh) * 2014-06-27 2015-12-30 富士通株式会社 干扰协调方法、装置和通信***

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20090097754A (ko) * 2008-03-11 2009-09-16 엘지전자 주식회사 무선 통신 네트워크에서의 빔 트래킹 방법
US8862176B2 (en) * 2011-11-04 2014-10-14 Intel Corporation Techniques for mitigating interference associated with downlink transmissions from a base station
KR102449472B1 (ko) * 2016-11-03 2022-10-11 삼성전자 주식회사 무선 통신 시스템에서 단말 간 간섭 관리 방법 및 장치

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102123525A (zh) * 2010-01-07 2011-07-13 夏普株式会社 下行多天线多基站干扰协调方法和基站
CN102740436A (zh) * 2011-04-07 2012-10-17 华为技术有限公司 功率调整方法和基站
CN103765793A (zh) * 2011-08-12 2014-04-30 英特尔公司 无线通信***的相邻小区中对异步时分双工的支持
WO2015196455A1 (zh) * 2014-06-27 2015-12-30 富士通株式会社 干扰协调方法、装置和通信***

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113438675A (zh) * 2021-06-24 2021-09-24 中国联合网络通信集团有限公司 一种干扰处理方法、装置及设备

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