WO2015061924A1 - 小区间干扰抑制的方法及装置 - Google Patents

小区间干扰抑制的方法及装置 Download PDF

Info

Publication number
WO2015061924A1
WO2015061924A1 PCT/CN2013/001325 CN2013001325W WO2015061924A1 WO 2015061924 A1 WO2015061924 A1 WO 2015061924A1 CN 2013001325 W CN2013001325 W CN 2013001325W WO 2015061924 A1 WO2015061924 A1 WO 2015061924A1
Authority
WO
WIPO (PCT)
Prior art keywords
base station
user equipment
predetermined frame
neighboring base
interference
Prior art date
Application number
PCT/CN2013/001325
Other languages
English (en)
French (fr)
Inventor
杨育波
朱旭东
Original Assignee
上海贝尔股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 上海贝尔股份有限公司 filed Critical 上海贝尔股份有限公司
Priority to PCT/CN2013/001325 priority Critical patent/WO2015061924A1/zh
Priority to CN201380079367.0A priority patent/CN105519157B/zh
Publication of WO2015061924A1 publication Critical patent/WO2015061924A1/zh

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/02—Resource partitioning among network components, e.g. reuse partitioning
    • H04W16/10—Dynamic resource partitioning
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
    • H04W72/542—Allocation or scheduling criteria for wireless resources based on quality criteria using measured or perceived quality
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management

Definitions

  • the present invention relates generally to mobile communication technologies and, more particularly, to coordinated multipoint transmission. Background technique
  • the base station determines the transmission format, transport block size, and modulation used for downlink (DL) and uplink (UL). And coding scheme, Multiple Input Multiple Output (MIMO) transmission mode, etc.
  • the multiple input multiple output system uses, for example, but not limited to, Orthogonal Frequency Division Multiplexing (OFDM) technology on the signal bearer.
  • OFDM Orthogonal Frequency Division Multiplexing
  • the length of an independent decoded transmission in a wireless link is defined as the Transmission Time Interval ( ⁇ ).
  • ⁇ Transmission Time Interval
  • a TTI is generally considered to be lms.
  • Each ⁇ usually includes, for example but not limited to, one or two subframes.
  • Each subframe includes a number of frequency points and time slots.
  • a time slot at a frequency point is the smallest unit of signal-bearing resources and is defined as a Resource Block (RB).
  • RB Resource Block
  • Coordinated Multiple Point (CoMP) transmission technology has the potential to improve the cell user's throughput and even improve the average cell throughput.
  • coordinated multipoint transmission technology uplink transmission can be classified as Coordinated Scheduling and Joint Reception. Wait.
  • joint reception is not a viable option due to the limitation of Hybrid Automatic Repeat Request (HARQ) and the delay of channel state information transmitted by the backhaul network. .
  • HARQ Hybrid Automatic Repeat Request
  • iterative scheduling is not a viable option. Summary of the invention
  • a method for interference coordination in a wireless communication network including The following steps are: i.
  • the serving base station notifies the neighboring base station of the identifier of the preselected user equipment and the reference signal resource; ii, the neighboring base station evaluates the expected interference of the preselected user equipment in the predetermined frame; iii, the serving base station is based on the preselected user equipment.
  • the expected interference of the predetermined frame exceeding a predetermined threshold is used to schedule signal transmission of the pre-selected user equipment at the predetermined frame to reduce inter-cell interference.
  • the method further includes the steps of: each base station determining a received signal subspace in the predetermined frame; wherein the expected interference in the step ii is for a received signal of the neighboring base station in the predetermined frame Space assessment.
  • the predetermined frame accounts for the communication delay between the serving base station and the neighboring base station.
  • the method further includes: comparing a path loss of a user equipment to the serving base station with a path loss of the user equipment to the neighboring base station, if a difference between the two is less than a predetermined threshold, And determining the user equipment as the pre-selected user equipment.
  • the method further includes the step of: the neighboring base station feeding back the identifier of the user equipment and the corresponding expected interference level to the serving base station.
  • an apparatus in a base station suitable for a wireless communication network comprising: a selection module, a receiving module, and a scheduling module.
  • the selection module is configured to notify the neighboring base station of the identity and reference signal resources of the preselected user equipment.
  • the receiving module is configured to receive at least a portion of the expected interference of the pre-selected user equipment in the predetermined frame fed back by the neighboring base station.
  • the scheduling module is configured to schedule signal transmission of the pre-selected user equipment at the predetermined frame to reduce inter-cell interference based on the expected interference of the pre-selected user equipment exceeding a predetermined threshold of a predetermined frame.
  • An embodiment of the apparatus further comprising an evaluation module configured to: determine a received signal subspace in the predetermined frame; and evaluate an expectation of a serving user equipment of a neighboring base station for a received signal subspace of the predetermined frame interference.
  • the predetermined frame accounts for communication delays between adjacent base stations.
  • the selecting module is further configured to: compare a path loss of a user equipment to the base station with a path loss of the user equipment to the neighboring base station, if the difference between the two is smaller than After the threshold is predetermined, the user equipment is determined as the pre-selected user equipment.
  • the receiving module is further configured to receive an identifier of the user equipment fed back by the neighboring base station and a corresponding expected interference level.
  • FIG. 1 shows a layout diagram of a wireless network according to an embodiment of the present invention
  • FIG. 2 is a flow chart showing a method of inter-cell interference coordination according to an embodiment of the present invention
  • FIG. 3 is a block diagram showing the structure of a device in a base station suitable for a wireless communication network according to an embodiment of the present invention. detailed description
  • base stations have different technical terms in different protocol standards.
  • the base station is referred to as a Node B or an evolved Node B (eNB) in an LTE system or an LTE-A system.
  • the base station referred to in the present invention is, for example but not limited to, an eNB in the LTE-A system.
  • the methods and apparatus provided in the present invention are applicable to, for example, but not limited to, an LTE system.
  • FIG. 1 shows a layout diagram of a wireless network in accordance with one embodiment of the present invention.
  • Two adjacent base stations 11, 12, and user equipment 21, 22 are shown.
  • the signal coverage areas (serving cells) of the base stations 11 and 12 overlap at a margin with a small portion.
  • the user equipment 21 is located within the signal coverage area of the base station 11 and is used by the base station 11 as its serving base station.
  • User equipment 22 is located within the signal coverage area of base station 12 and is used by base station 12 as its serving base station.
  • Signal links 111, 121, 112 and 122 between the user equipment and the base station are schematically illustrated in FIG.
  • the base station 12 is not the serving base station of the user equipment 21, so the uplink data signal of the user equipment 21 is formed to the base station 12.
  • Interference, signal link 112 therebetween is shown in unfilled dashed form.
  • the upstream data signals of user equipment 22 form interference with base station 11.
  • the base stations 1 1 , 12 exchange information via a backhaul network (wired or wirelessly connected), for example but not limited to an X2 interface.
  • a backhaul network wireless or wirelessly connected
  • the same site can be configured with multiple base stations, for example, three base stations equipped on the same signal transmission tower respectively serve a sector of 120°; the base stations in the station need not be exchanged through the backhaul network.
  • Information, which is required to exchange information over the backhaul network is usually a base station at a different site.
  • the method 200 includes steps 210, 220, and 230, illustratively implemented by the serving base station 11 and neighboring base stations 12.
  • the method 200 is implemented by a user equipment that accesses the serving cell of the base station 11.
  • the serving base station 11 notifies the neighboring base station of the identity of the preselected user equipment and the reference signal resources, such as but not limited to the base station 12.
  • the reference signal resource is an uplink access resource, such as but not limited to a Sounding Reference Signal (SRS) configuration.
  • SRS Sounding Reference Signal
  • the pre-selected user equipment is a user equipment that the serving base station initially determines may cause significant interference to neighboring base stations or cells.
  • downlink reference signals (or access channels) of adjacent base stations or serving cells are orthogonal to each other.
  • User equipment may access multiple base stations simultaneously.
  • the serving base station 11 may require the user equipment, e.g., the user equipment 21, to detect the Path Loss (PL) of other neighboring base stations and report, for example, that will be performed during a known handover procedure.
  • the serving base station 11 can compare the path loss of the user equipment 21 to the neighboring base station 12 and the path loss of the user equipment 21 to the base station 11. If the difference between the two path losses is less than a predetermined threshold, it can be regarded as a user equipment. An indication that 21 may cause a large interference to the base station 12, the serving base station 1 1 may determine the user equipment 21 as a pre-selected user equipment.
  • a plurality of services of different quality of service (Qos) levels are designed in the system, and a user equipment requires (or is assigned to) a service with a higher QoS level or a service requiring a higher uplink transmit power.
  • the user equipment is selected as the standard for pre-selected user equipment.
  • the selection of the pre-selected user equipment described above can advantageously utilize known signaling (information), indicators, and indicators in existing protocols or standards to reduce or even eliminate hardware and software updates on the user equipment side.
  • the above selections are all illustrative and not limiting, and any other suitable alternative may be applied to the present invention.
  • a neighboring base station such as but not limited to base station 12, evaluates the expected interference of the preselected user equipment at a predetermined frame.
  • the predetermined frame counts the communication delay between the serving base station and the neighboring base station.
  • the time interval between the predetermined frame and the current frame is greater than, or at least equal to, the transmission delay between two adjacent base stations.
  • the base station of the MIMO system is configured with multiple antennas, and the received signal on each antenna has an amplitude and phase Bit, then the complete uplink received signal on multiple antennas belongs to a multi-dimensional signal space. For example, when the base station is configured with four receiving antennas, the received signal belongs to a four-dimensional signal space. It is generally desirable that the received data signal subspace and the received interference signal subspace are as orthogonal as possible to each other, or that the projection of the received interference signal subspace on the received data signal subspace is as small as possible, such that the received interference signal interferes with the received data signal. It is correspondingly small.
  • Each base station typically predetermines the received signal subspace of each frame.
  • the neighboring base station already knows the identifier and reference signal resources of the pre-selected user equipment of the serving base station, and can detect its uplink reference signal to obtain the channel response of the uplink transport block.
  • the uplink data signal of the pre-selected user equipment of the serving base station is the source of interference for the neighboring base stations.
  • the expected interference in step 220 can be evaluated by calculating the uplink reference signal of the preselected user equipment of the serving base station and the projection of the received signal at the neighboring base station with respect to the received signal subspace of the predetermined base station in the predetermined frame.
  • the serving base station 1 1 schedules signal transmission of the pre-selected user equipment at the predetermined frame to reduce inter-cell interference based on the expected interference of the pre-selected user equipment exceeding a predetermined threshold of a predetermined frame. Specifically, the data carried by the preselected user equipment on those resource blocks whose expected interference of the predetermined frame to the neighboring base station exceeds a predetermined threshold will cause greater interference to the neighboring base station, and the serving base station 1 1 may reserve the preselected user equipment. The data resources of the frame are scheduled to resources outside of these resource blocks.
  • the neighboring base station can feed back all expected interference in the form of quantized interference levels, while the serving base station determines which portion of the predetermined threshold is exceeded. In this case, the neighboring base station can feed back the identity of the user equipment and the quantized interference level in the order of the resource blocks.
  • Neighboring base stations may also only feed back expected interference that exceeds a predetermined threshold.
  • the neighboring base station can feed back the identity of the user equipment and the sequence number of the resource block whose expected interference exceeds a predetermined threshold. If the expected interference of all resource blocks does not exceed the predetermined threshold, the neighboring base station may only feed back the identity of the corresponding user equipment and an identification indicating the situation.
  • FIG. 3 is a block diagram showing the structure of an apparatus 300 in a base station suitable for a wireless communication network in accordance with one embodiment of the present invention.
  • the apparatus 300 includes a selection module 310, a receiving module 320, a scheduling module 330, an evaluation module 340, and a transmitting module 350.
  • the device 300 is typically configured in a base station.
  • the selection module 310 is configured to notify the neighboring base stations of the identity and reference signal resources of the preselected user equipment.
  • the reference signal resource is an uplink access resource, such as but not limited to an SRS configuration.
  • the pre-selected user equipment is a user equipment that the serving base station initially determines may cause significant interference to neighboring base stations or cells. For the selection method of the pre-selected user equipment, refer to the description of the foregoing method 200, which will not be described again.
  • the receiving module 320 is configured to receive at least a portion of the expected interference of the pre-selected user equipment in the predetermined frame fed back by the neighboring base station.
  • the scheduling module 330 is configured to schedule signal transmission of the pre-selected user equipment at the predetermined frame to reduce inter-cell interference based on expected interference of the pre-selected user equipment exceeding a predetermined threshold of a predetermined frame.
  • the evaluation module 340 is configured to: determine a received signal subspace in a predetermined frame; and estimate expected interference of the serving user equipment of the neighboring base station for the received signal subspace of the predetermined frame.
  • the transmitting module 350 is configured to transmit the evaluation results of the evaluation module 340.
  • the predetermined frame counts the communication delay between the serving base station and the neighboring base station.
  • the time interval between the predetermined frame and the current frame is greater than, or at least equal to, the transmission delay between two adjacent base stations.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Quality & Reliability (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

本发明涉及小区间干扰协调的方法及装置。一个实施例中提供了一种适于无线通信网络中干扰协调的方法，包括以下步骤：i、服务基站将预选用户设备的标识和参考信号资源通知给相邻基站；ii、相邻基站评估预选用户设备在预定帧的预期干扰；iii、服务基站基于所述预选用户设备在预定帧的超过预定门限的预期干扰来调度所述预选用户设备在所述预定帧的信号传输以降低小区间干扰。本发明的方法或装置能够降低小区之间的干扰。

Description

说 明 书 小区间干扰抑制的方法及装置
技术领域
本发明大体上涉及移动通信技术， 更具体地， 涉及协同多点传输。 背景技术
在诸如长期演进项目 （Long Term Evolution, LTE ) 的现代移动通信系统中， 基站 为下行链路（downlink, DL ) 和上行链路（uplink, UL )确定所使用的传输格式、 传输 块大小、 调制及编码方案、 多输入多输出 （ Multiple Input Multiple Output, MIMO ) 传 输模式等。多输入多输出系统在信号承载上釆用例如但不限于正交频分复用（ Orthogonal Frequency Division Multiplexing, OFDM )技术。 无线链路中的一个独立解码传输的长度 定义为传输时间间隔 ( Transmission Time Interval, ΤΉ ) 。 在 3 GPP LTE与 LTE- A的标 准中， 一般认为一个 TTI为 lms。 每一个 ΤΉ通常包括， 例如但不限于， 一个或两个子 帧 （subframe ) 。 每一个子帧包括若干频点和时隙 （ time slot )。 一个频点上的一个时隙 是信号承载资源的最小单位， 定义为资源块 （ Resource Block, RB ) 。
在众多方案中， 协同多点 （ Coordinated Multiple Point, CoMP )传输技术具有改善 小区 （cell ) 边缘用户呑吐量甚至是改善小区平均呑吐量的潜力。 取决于是否在协同小 区之间共享信道状态信息 （ Channel State Information , CSI ) 和 /或用户数据， 协同多点 传输技术上行传输可以被归类为协同调度 （Coordinated Scheduling ) 、 联合接收 （Joint Reception ) 等。 但在非理想回程网络（ Non-ideal Backhaul Network ) 的情况下， 由于混 合自动重传请求 （ Hybrid Automatic Repeat Request, HARQ ) 的限制和回程网络传递信 道状态信息的延迟， 联合接收并非现实可行的选择。 同样由于回程网络的传输延迟， 迭 代的调度也并非现实可行的选择。 发明内容
本发明的一个主要目的在于克服现有技术中的上述缺陷并提供一种适于非理想回 程网络的新的上行传输技术。
根据本发明的一个实施例， 提供了一种适于无线通信网络中干扰协调的方法， 包括 以下步骤： i、 服务基站将预选用户设备的标识和参考信号资源通知给相邻基站； ii、 相 邻基站评估预选用户设备在预定帧的预期干扰； iii、 服务基站基于所述预选用户设备在 预定帧的超过预定门限的预期干扰来调度所述预选用户设备在所述预定帧的信号传输 以降低小区间干扰。
该方法的一个实施例中，还包括步骤：各基站确定在所述预定帧的接收信号子空间； 其中所述步骤 ii 中的预期干扰针对所述相邻基站在所述预定帧的接收信号子空间而评 估。
该方法的一个实施例中，预定帧计入了所述服务基站和所述相邻的基站之间的通信 时延。
该方法的一个实施例中， 还包括步骤： 将一个用户设备到所述服务基站的路径损耗 与该用户设备到所述相邻基站的路径损耗进行比较， 如果两者的差值小于预定阈值， 则 将该用户设备确定为所述预选用户设备。
该方法的一个实施例中， 还包括步骤： 所述相邻基站将用户设备的标识以及相应的 预期干扰级别反馈给所述服务基站。
在本发明的另一个实施例中，提供了一种适于无线通信网络的基站中装置，其包括： 选择模块、 接收模块和调度模块。 选择模块配置为将预选用户设备的标识和参考信号资 源通知给相邻基站。 接收模块配置为接收所述相邻基站反馈的所述预选用户设备在预定 帧的预期干扰的至少一部分。 调度模块配置为基于所述预选用户设备在预定帧的超过预 定门限的预期干扰来调度所述预选用户设备在所述预定帧的信号传输以降低小区间干 扰。
该装置的一个实施例中， 还包括评估模块， 其配置为： 确定在所述预定帧的接收信 号子空间； 针对所述预定帧的接收信号子空间而评估相邻基站的服务用户设备的预期干 扰。
该装置的一个实施例中， 所述预定帧计入了相邻的基站之间的通信时延。
该装置的一个实施例中， 所述选择模块还配置为： 将一个用户设备到所述基站的路 径损耗与该用户设备到所述相邻基站的路径损耗进行比较， 如果两者的差值小于预定阈 值， 则将该用户设备确定为所述预选用户设备。
该装置的一个实施例中，所述接收模块还配置为接收相邻基站所反馈的用户设备的 标识以及相应的预期干扰级别。
以上概述了本发明的技术特征和优点以使得本发明以下的详细说明更易于理解。本 发明的其他特征和优点将在下文中描述， 其形成了本发明的权利要求的主题。 本领域技 术人员应能理解， 所揭示的概念和实施例可以容易地被用作修改或设计其他的用于实现 与本发明相同的目的的结构或流程的基础。 本领域技术人员还应理解， 这样的等同构造 并未背离所附权利要求书的精神和范围。 附图说明
结合附图， 以下关于本发明的优选实施例的详细说明将更易于理解。 本发明以举例 的方式予以说明， 并非受限于附图， 附图中类似的附图标记指示相似的元件。
图 1示出了根据本发明的一个实施例的无线网络的布局示意图；
图 2示出了根据本发明的一个实施例的小区之间干扰协调方法的流程图； 图 3 示出了根据本发明的一个实施例的适于无线通信网络的基站中装置的结构框 图。 具体实施方式
附图的详细说明意在作为本发明的当前优选实施例的说明，而非意在代表本发明能 够得以实现的仅有形式。 应理解的是， 相同或等同的功能可以由意在包含于本发明的精 神和范围之内的不同实施例完成。
本领域技术人员应能理解，此处描述的手段和功能可以使用结合程控^:处理器和通 用计算机的软件功能来实现， 和 /或使用特定应用集成电路 （ASIC ) 来实现。 还应理解 的是， 尽管本发明主要以方法和装置的形式进行说明， 本发明也可以具体化为计算机程 序产品以及包含计算机处理器和联接到处理器的存储器的系统， 其中存储器用可以完成 此处揭示的功能的一个或多个程序来编码。
本领域技术人员应能理解， 基站在不同的协议标准中有不同的技术术语。 例如， 基 站在 LTE系统或 LTE-A系统中被称为节点 B ( Node B )或进化的节点 B ( evolved Node B , eNB ) 。 本发明中所称的基站例如但不限于 LTE-A系统中的 eNB。 本发明中提供的 方法及装置适用于例如但不限于 LTE系统。
图 1示出了根据本发明的一个实施例的无线网络的布局示意图。图中示出了两个相 邻基站 11、 12、 以及用户设备 21、 22。 基站 11和 12的信号覆盖区 （服务小区）在边 缘地带有小部分彼此交叠。 用户设备 21位于基站 11的信号覆盖区之内， 由基站 11作 为其服务基站。 用户设备 22位于基站 12的信号覆盖区之内， 由基站 12作为其服务基 站。 图 1中示意性地示出了用户设备和基站之间的信号链路 111、 121、 112和 122。 基 站 12并非用户设备 21的服务基站， 因此用户设备 21的上行数据信号形成对基站 12的 干扰， 其间的信号链路 112 以无填充虚线形式示出。 同样地， 用户设备 22的上行数据 信号形成对基站 11的干扰。 基站 1 1、 12通过（有线连接或无线连接的） 回程网络、 釆 用例如但不限于 X2接口进行信息交换。 应理解的是， 同一个站点 （ site )可以配置多个 基站， 例如同一个信号发射塔上配备的三个基站分别服务一个 120° 的扇区； 站点内的 基站之间无需通过回程网络来交换信息， 需要通过回程网络来交换信息的通常是不同站 点的基站。
图 2示出了根据本发明的一个实施例的小区之间干扰抑制的方法 200的流程图。如 图所示， 该方法 200包括步骤 210、 220和 230 , 示意性地由服务基站 11和相邻基站 12 所实施。 该方法 200实施的对象是接入了基站 11的服务小区的用户设备。
在步骤 210中， 服务基站 1 1将预选用户设备的标识和参考信号资源通知给相邻基 站， 例如但不限于基站 12。 参考信号资源是上行接入资源， 例如但不限于探通参考信号 ( Sounding Reference Signal, SRS ) 配置。 大体上而言， 预选用户设备是服务基站初步 判断可能对相邻基站或小区造成较大干扰的用户设备。
通常， 相邻的基站或服务小区的下行参考信号（或称接入信道）彼此之间正交。 用 户设备可能同时接入多个基站。 服务基站 11可以要求用户设备， 例如用户设备 21 , 检 测到其他相邻基站的路径损耗（Path Loss, PL )并报告， 例如在已知的切换（handover ) 过程中将执行的那样。 服务基站 11可以将用户设备 21到相邻基站 12的路径损耗和用 户设备 21到基站 1 1的路径损耗进行比较， 如果两个路径损耗之间的差值小于一个预定 阈值， 可以视作用户设备 21可能对基站 12造成较大干扰的一个指示， 则此时服务基站 1 1 可以将用户设备 21 确定为预选用户设备。 又如， 系统中设计了多种不同服务质量 ( Qos ) 等级的业务， 而一个用户设备要求 （或被分配到） 较高 Qos等级的业务、 或者 需要较高上行发射功率的业务也可以作为将该用户设备选作预选用户设备的标准。 上述 预选用户设备的选择方式均可以有利地利用现有协议或标准中的已知信令（ signaling ) 、 信息（information ) 、 标识（indicator ) 以减少甚至无需用户设备端的软硬件更新。 上述 选择方式均是示例性而非限制性的， 任何其他合适的选择方式均可以适用于本发明。
在步骤 220中， 例如但不限于基站 12的相邻基站评估预选用户设备在预定帧的预 期干扰。
因为预期干扰将由相邻基站反馈给服务基站作为对预定帧资源调度的参考，预定帧 计入了所述服务基站和所述相邻基站之间的通信时延。 符合逻辑地而言， 预定帧和当前 帧之间的时间间隔大于， 或至少等于， 两个相邻的基站之间的传输时延。
MIMO 系统的基站配置有多根天线， 每一根天线上的接收信号具有一个幅度及相 位， 则多天线上的完整上行接收信号属于一个多维信号空间。 例如， 当基站配置有四根 接收天线时， 接收信号属于一个四维信号空间。 通常希望接收数据信号子空间和接收干 扰信号子空间尽可能彼此正交， 或者接收干扰信号子空间在接收数据信号子空间上的投 影尽可能的小， 这样接收干扰信号对接收数据信号造成的干扰也就相应的小。
各基站通常预先确定各帧的接收信号子空间。相邻基站已经知道服务基站的预选用 户设备的标识和参考信号资源， 即可检测其上行参考信号而得到上行传输块的信道响 应。 服务基站的预选用户设备的上行数据信号对于相邻基站而言是干扰源。 步骤 220中 的预期干扰可以通过如下方式评估， 即： 计算服务基站的预选用户设备的上行参考信号 在相邻基站的接收信号关于相邻基站在预定帧的接收信号子空间的投影。
预期干扰在一个传输块中的各个资源块上的强度分布通常是不均勾的。 在步骤 230 中， 服务基站 1 1 基于所述预选用户设备在预定帧的超过预定门限的预期干扰来调度所 述预选用户设备在所述预定帧的信号传输以降低小区间干扰。 具体地， 预选用户设备在 预定帧对相邻基站的预期干扰超过预定门限的那些资源块上承载的数据将对该相邻基 站造成较大的干扰， 服务基站 1 1 可以将预选用户设备在预定帧的数据资源调度到这些 资源块以外的资源上。
相邻基站可以以量化的干扰级别的形式反馈所有的预期干扰，而由服务基站确定其 中超过预定门限的那一部分。 在此情况下， 相邻基站可以反馈用户设备的标识以及按资 源块顺序排列的量化干扰级别。
相邻基站也可以仅反馈超过预定门限的预期干扰。 在此情况下， 相邻基站可以反馈 用户设备的标识、 以及预期干扰超过预定门限的资源块的序号。 如果所有资源块的预期 干扰均未超过预定门限， 则相邻基站可以仅反馈相应用户设备的标识以及一个表示该情 形的标识。
图 3示出了根据本发明的一个实施例的适于无线通信网络的基站中装置 300的结构 框图。 如图所示， 该装置 300包括： 选择模块 310、 接收模块 320、 调度模块 330、 评估 模块 340和发送模块 350。 该装置 300通常配置于基站中。
选择模块 310配置为将预选用户设备的标识和参考信号资源通知给相邻基站。参考 信号资源是上行接入资源， 例如但不限于 SRS配置。 大体上而言， 预选用户设备是服务 基站初步判断可能对相邻基站或小区造成较大干扰的用户设备。 预选用户设备的选择方 式参见前文结合方法 200的描述， 不再赘述。
接收模块 320 配置为接收所述相邻基站反馈的所述预选用户设备在预定帧的预期 干扰的至少一部分。 调度模块 330 配置为基于所述预选用户设备在预定帧的超过预定门限的预期干扰 来调度所述预选用户设备在所述预定帧的信号传输以降低小区间干扰。
评估模块 340配置为： 确定在预定帧的接收信号子空间； 针对所述预定帧的接收信 号子空间而评估相邻基站的服务用户设备的预期干扰。
发送模块 350配置为发送评估模块 340的评估结果。
因为预期干扰将由相邻基站反馈给服务基站作为对预定帧资源调度的参考，预定帧 计入了所述服务基站和所述相邻基站之间的通信时延。 符合逻辑地而言， 预定帧和当前 帧之间的时间间隔大于， 或至少等于， 两个相邻的基站之间的传输时延。
预期干扰的评估方式及反馈方式参见前文结合方法 200的描述， 不再赘述。 尽管已经阐明和描述了本发明的不同实施例， 本发明并不限于这些实施例。 权利要 求中出现的 "第一" 、 "第二" 等序数词仅仅起到区别的作用， 而并不意味着相应部件 之间存在任何特定的顺序或连接关系。 仅在某些权利要求或实施例中出现的技术特征也 并不意味着不能与其他权利要求或实施例中的其他特征相结合以实现有益的新的技术 方案。在不背离如权利要求书所描述的本发明的精神和范围的情况下， 许多修改、 改变、 变形、 替代以及等同对于本领域技术人员而言是明显的。

Claims

1. 一种适于无线通信网络中干扰协调的方法， 其特征在于包括以下步骤： i、 服务基站将预选用户设备的标识和参考信号资源通知给相邻基站；
ii、 相邻基站评估预选用户设备在预定帧的预期干扰；
iii、 服务基站基于所述预选用户设备在预定帧的超过预定门限的预期干扰来调度所 述预选用户设备在所述预定帧的信号传输以降低小区间干扰。
2. 如权利要求 1所述的方法， 其特征在于， 还包括步骤：
各基站确定在所述预定帧的接收信号子空间；
其中所述步骤 ii 中的预期干扰针对所述相邻基站在所述预定帧的接收信号子空间而 评估。
3. 如权利要求 1所述的方法， 其特征在于， 所述预定帧计入了所述服务基站和所述相 邻的基站之间的通信时延。
4. 如权利要求 1所述的方法， 其特征在于， 还包括步骤：
将一个用户设备到所述服务基站的路径损耗与该用户设备到所述相邻基站的路径损 耗进行比较，如果两者的差值小于预定阈值，则将该用户设备确定为所述预选用户设备。
5. 如权利要求 1所述的方法， 其特征在于， 还包括步骤：
所述相邻基站将用户设备的标识以及相应的预期干扰级别反馈给所述服务基站。
6. 一种适于无线通信网络的基站中装置， 其特征在于包括：
选择模块， 其配置为将预选用户设备的标识和参考信号资源通知给相邻基站； 接收模块， 其配置为接收所述相邻基站反馈的所述预选用户设备在预定帧的预期干 扰的至少一部分；
调度模块， 其配置为基于所述预选用户设备在预定帧的超过预定门限的预期干扰来 调度所述预选用户设备在所述预定帧的信号传输以降低小区间干扰。
7. 如权利要求 6所述的装置， 其特征在于， 还包括评估模块， 其配置为: 确定在所述预定帧的接收信号子空间；
针对所述预定帧的接收信号子空间而评估相邻基站的服务用户设备的预期干扰。
8. 如权利要求 6所述的装置， 其特征在于， 所述预定帧计入了相邻的基站之间的通信 时延。
9. 如权利要求 6所述的装置， 其特征在于， 所述选择模块还配置为： 将一个用户设备 到所述基站的路径损耗与该用户设备到所述相邻基站的路径损耗进行比较， 如果两者的 差值小于预定阈值， 则将该用户设备确定为所述预选用户设备。
10. 如权利要求 6所述的装置， 其特征在于， 所述接收模块还配置为接收相邻基站所反 馈的用户设备的标识以及相应的预期干扰级别。
PCT/CN2013/001325 2013-11-01 2013-11-01 小区间干扰抑制的方法及装置 WO2015061924A1 (zh)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/CN2013/001325 WO2015061924A1 (zh) 2013-11-01 2013-11-01 小区间干扰抑制的方法及装置
CN201380079367.0A CN105519157B (zh) 2013-11-01 2013-11-01 小区间干扰抑制的方法及装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2013/001325 WO2015061924A1 (zh) 2013-11-01 2013-11-01 小区间干扰抑制的方法及装置

Publications (1)

Publication Number Publication Date
WO2015061924A1 true WO2015061924A1 (zh) 2015-05-07

Family

ID=53003067

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2013/001325 WO2015061924A1 (zh) 2013-11-01 2013-11-01 小区间干扰抑制的方法及装置

Country Status (2)

Country Link
CN (1) CN105519157B (zh)
WO (1) WO2015061924A1 (zh)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020063732A1 (zh) * 2018-09-26 2020-04-02 中兴通讯股份有限公司 干扰控制、响应消息发送、转发方法、装置、通信设备及系统
US20210266778A1 (en) * 2018-11-20 2021-08-26 Qualcomm Incorporated Cross link interference detection systems and methods
US20220131630A1 (en) * 2019-01-11 2022-04-28 Apple Inc. Method for conveying remote interference management information via reference signal

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102076096A (zh) * 2011-01-12 2011-05-25 上海华为技术有限公司 一种 CoMP的实现方法、装置及基站
CN102291726A (zh) * 2010-06-17 2011-12-21 重庆无线绿洲通信技术有限公司 一种无线网络干扰消除方法
CN102342032A (zh) * 2009-03-04 2012-02-01 Lg电子株式会社 用于在无线通信系统中执行comp操作和发送反馈信息的方法
CN102395163A (zh) * 2011-06-30 2012-03-28 中兴通讯股份有限公司 协作多点传输系统中信息的交互方法及协作多点传输系统
CN103001731A (zh) * 2011-09-16 2013-03-27 中兴通讯股份有限公司 一种协同多点传输生成预编码矩阵方法及系统

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102342032A (zh) * 2009-03-04 2012-02-01 Lg电子株式会社 用于在无线通信系统中执行comp操作和发送反馈信息的方法
CN102291726A (zh) * 2010-06-17 2011-12-21 重庆无线绿洲通信技术有限公司 一种无线网络干扰消除方法
CN102076096A (zh) * 2011-01-12 2011-05-25 上海华为技术有限公司 一种 CoMP的实现方法、装置及基站
CN102395163A (zh) * 2011-06-30 2012-03-28 中兴通讯股份有限公司 协作多点传输系统中信息的交互方法及协作多点传输系统
CN103001731A (zh) * 2011-09-16 2013-03-27 中兴通讯股份有限公司 一种协同多点传输生成预编码矩阵方法及系统

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020063732A1 (zh) * 2018-09-26 2020-04-02 中兴通讯股份有限公司 干扰控制、响应消息发送、转发方法、装置、通信设备及系统
US11963017B2 (en) 2018-09-26 2024-04-16 Zte Corporation Interference control method and apparatus, response message sending method and apparatus, response message forwarding method and apparatus, communication device, and communication system
US20210266778A1 (en) * 2018-11-20 2021-08-26 Qualcomm Incorporated Cross link interference detection systems and methods
US11792675B2 (en) * 2018-11-20 2023-10-17 Qualcomm Incorporated Cross link interference detection systems and methods
US20220131630A1 (en) * 2019-01-11 2022-04-28 Apple Inc. Method for conveying remote interference management information via reference signal

Also Published As

Publication number Publication date
CN105519157A (zh) 2016-04-20
CN105519157B (zh) 2019-05-07

Similar Documents

Publication Publication Date Title
TWI700913B (zh) 使用者設備及其無線通訊方法
WO2019156085A1 (ja) 基地局装置、端末装置および通信方法
US10285146B2 (en) Base station and user terminal
CN108966301B (zh) 用于多小区通信的方法及wtru
CN107079302B (zh) Lte许可辅助接入中的隐藏节点检测
EP2678964B1 (en) Communication of data using independent downlink and uplink connections
TW201808051A (zh) 設備到設備通訊系統中基於優先順序的資源選擇
CN115943587A (zh) 在非许可侧行链路上的覆盖内网络控制的卸载
WO2019031190A1 (ja) 通信装置、通信制御方法及びコンピュータプログラム
KR20110101033A (ko) 셀 간 간섭을 제어하기 위한 장치 및 방법
KR20110035807A (ko) 무선 통신 시스템에서의 ＣｏＭＰ 피드백 정보를 전송하기 위한 방법 및 단말 장치
US20160066315A1 (en) Method and apparatus for management of protected resource in a heterogeneous network
US20190254043A1 (en) Apparatuses, methods and computer programs for implementing fairness and complexity-constrained a non-orthogonal multiple access (noma) scheme
US20210409993A1 (en) Interference management for sidelink on resources shared with direct link
US20150195064A1 (en) Communication control device, communication control method and communication device
US10638515B2 (en) Methods used in terminal devices and network devices, and associated devices
CN111742579A (zh) 执行波束失败恢复过程的方法及用户装置
US11910427B2 (en) Triggering CSI resource signals and CSI reports in 5G NR
CN107809770B (zh) 传输数据的方法、基站和用户设备
JP2018011336A (ja) ＣｏＭＰにおいてシグナリング情報を交換するための装置および方法
US20220039133A1 (en) Centralized intercell interference coordination
WO2015061924A1 (zh) 小区间干扰抑制的方法及装置
US11382043B1 (en) Methods and systems for selecting coordinated multipoint enhancement mode
JP2019062542A (ja) ユーザ端末、通信方法及び通信システム
CN114982188B (zh) 探测参考信号配置

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 13896836

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 13896836

Country of ref document: EP

Kind code of ref document: A1