WO2010121448A1 - Method and device for realizing carrier aggregation - Google Patents
Method and device for realizing carrier aggregation Download PDFInfo
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- WO2010121448A1 WO2010121448A1 PCT/CN2009/072727 CN2009072727W WO2010121448A1 WO 2010121448 A1 WO2010121448 A1 WO 2010121448A1 CN 2009072727 W CN2009072727 W CN 2009072727W WO 2010121448 A1 WO2010121448 A1 WO 2010121448A1
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- base station
- user terminal
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- 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
- H04W72/541—Allocation or scheduling criteria for wireless resources based on quality criteria using the level of interference
Definitions
- the present invention relates to the field of communications, and in particular, to a method and an apparatus for implementing carrier aggregation.
- BACKGROUND In a next-generation broadband wireless communication network, how to support a larger bandwidth under the bandwidth of a current wireless communication system is to improve the inter-cell user terminal (UT terminal) throughput and UT average throughput.
- LTE Long Term Evolution
- Carrier aggregation is adopted to effectively support larger bandwidth in current wireless communication systems to meet the new generation. The need for metrics such as throughput and peak rate in the wireless standard.
- Carrier aggregation is a key technology in future wireless communication systems.
- LTE-Advanced Long-Term Evolution Advanced
- LTE-Advanced Long-Term Evolution Advanced
- the carrier aggregation discussed in LTE-Advanced does not take into account the impact of inter-cell interference that plays an important role in inter-cell UT throughput and inter-cell UT average throughput, if the aggregated carrier part suffers severe inter-cell interference. Impact, even if a larger bandwidth is obtained, the throughput and rate performance of the UT using the partially aggregated carrier is degraded due to severe inter-cell interference, thereby offsetting the benefits of carrier aggregation.
- the existing related art does not consider the problem that the inter-cell interference in the carrier aggregation affects the UT throughput and the average throughput, and the throughput and rate performance of the UT are degraded, and an effective solution has not been proposed yet.
- the present invention has been made in view of the problem in the prior art that the impact of inter-cell interference on UT throughput and average throughput in carrier aggregation is reduced, resulting in a decrease in throughput and rate performance of the UT.
- the main purpose of the present invention is It is to provide a carrier aggregation scheme based on a restricted interference source to solve The above issues are resolved. According to an aspect of the present invention, a method of implementing carrier aggregation is provided.
- the method for implementing carrier aggregation according to the present invention includes: a target base station determining a first interfering base station causing interference thereto; a target base station determining a second interfering base station causing interference to the user terminal; and the target base station according to the first interfering base station and the second
- the interfering base station determines the reference base station; the target base station aggregates the carrier resources of the base station other than the reference base station according to the capability of the user terminal.
- the first base station determined by the target base station to cause interference includes: the target base station measures the interference signal strength of each base station in the neighbor cell list, and the interference signal strength is greater than a preset restricted interference source selection threshold.
- the base station is determined to be the first interfering base station.
- the method further includes: for the target base station and the first interfering base station, each of the two base stations negotiates, so that the carrier resources of each two base stations are orthogonal to each other.
- the second base station that the target base station determines to cause interference to the user terminal includes: the base station receives the measurement result reported by the user terminal, where the measurement result includes an interference signal of each base station in the neighbor cell list of the target base station to the user terminal. Intensity; the target base station determines, as the second interfering base station, a base station whose interference signal strength is greater than a preset interference source selection threshold in the measurement result.
- the determining, by the target base station, the reference base station comprises: the target base station taking an intersection of the first interfering base station and the second interfering base station, and obtaining the reference base station.
- the target base station aggregates carrier resources of the base station other than the reference base station according to the capability of the user terminal, including: the target base station determines the capability of the user terminal; and the target base station determines the number of base stations to perform aggregation according to the capability of the user terminal. , and/or the bandwidth size of each base station in the base station where the aggregation takes place.
- the capabilities of the user terminal include: bandwidth capabilities of the user terminal.
- an apparatus for implementing carrier aggregation which may be located at a base station side.
- the device for implementing carrier aggregation according to the present invention includes: a first determining module, configured to determine a first interfering base station that causes interference to the base station; a second determining module, configured to determine a second interfering base station that causes interference to the user terminal; And configured to take an intersection between the first interfering base station and the second interfering base station, Obtaining a reference base station; a carrier aggregation module, configured to aggregate carrier resources of base stations other than the reference base station according to capabilities of the user equipment.
- the foregoing first determining module includes: a measuring submodule, configured to measure an interference signal strength of each base station in a neighboring cell list of the base station; and a first determining submodule, configured to use the interference signal strength to be greater than a preset limit
- the base station that interferes with the source selection threshold is determined to be the first interfering base station.
- the second determining module includes: a receiving submodule, configured to receive the measurement result reported by the user terminal, where the measurement result includes an interference signal strength of each base station in the neighboring cell list of the target base station to the user terminal; And a determining submodule, configured to determine, as the second interfering base station, a base station whose interference signal strength in the measurement result is greater than a preset interference source selection threshold.
- the base station when the base station performs carrier aggregation for the user terminal, the base station selects carrier resources other than the restricted interference source (interfering base station) that interferes with the user terminal, and can effectively solve the problem of carrier aggregation.
- FIG. 1 is a flowchart of a method for implementing carrier aggregation according to an embodiment of the present invention
- FIG. 2 is a detailed flowchart of a method for implementing carrier aggregation according to an embodiment of the present invention
- FIG. 4 is a structural block diagram of an apparatus for implementing carrier aggregation according to a preferred embodiment of the present invention.
- DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention is directed to the problem that the throughput and rate performance of the UT are degraded due to the impact of the inter-cell interference in the carrier aggregation on the UT throughput and the average throughput.
- An implementation scheme of carrier aggregation based on a restricted interference source is provided.
- the basic idea of the present invention is: determining a restricted interference source of a cell according to an interference source signal strength selection threshold, and limiting interference of the neighboring cell to a certain range.
- the resources occupied by the restricted source 4 are completely orthogonal.
- the base station selects carrier resources other than the restricted interference source that interferes with the user terminal to perform aggregation. It can effectively solve the defect that the system overhead is too large, the round-trip delay is too long, and the carrier reselection probability becomes large when considering the inter-cell interference coordination (ICIC) during carrier aggregation, and the carrier aggregation is implemented to meet the bandwidth requirement of the user terminal.
- ICIC inter-cell interference coordination
- FIG. 1 is a flowchart of a base station state control method according to an embodiment of the present invention. It should be noted that, for convenience of description, the technical solution of the method embodiment of the present invention is shown and described in FIG. The steps illustrated in Figure 1 may be performed in a computer system such as a set of computer executable instructions. Although the logical order is illustrated in FIG.
- the steps shown or described may be performed in an order different than jt.
- the method is used to determine parameters required for segmentation of a block to be transported, and mainly includes the following steps (step S102 to step S108 ): Step S102 , the target base station determines to cause interference to the (ie, the target base station)
- the first interfering base station ie, the restricted interference source described above
- the specific operation is: the target base station measures the interference signal strength of each base station in the neighbor cell list, and the interference signal strength is greater than the preset
- the base station that limits the source selection threshold is determined to be the first interfering base station.
- the first interfering base station is a set of base stations, and then, for the target base station and the first interfering base station, each of the two base stations is negotiated, so that The carrier resources of each two base stations are orthogonal to each other.
- Step S104 The target base station determines a second base station that is caused by the user terminal, and the user terminal is currently at the target base station, that is, the target base station is a monthly base station of the user terminal.
- the specific operation of the step is: the base station receives the measurement result reported by the user terminal, where the measurement result Including the interference signal strength of each base station in the neighbor cell list of the target base station to the user terminal; the target base station determines, as the second interference base station, the base station whose interference signal strength is greater than the preset restricted interference source selection threshold in the measurement result.
- the second interfering base station is a set of base stations.
- Step S106 The target base station determines the reference base station according to the first interfering base station and the second interfering base station, where the target base station obtains an intersection between the first interfering base station and the second interfering base station, and obtains a reference base station, where the reference base station is a
- the base station is aggregated, and the set may be an empty set.
- the first interfering base station is BS 1, BS 2, BS 3, BS 4, BS 7, and the second base station is BS 3, BS 5, BS 6, BS. 7.
- BS 8 after the first interfering base station and the second interfering base station are intersected, the obtained reference base station is: BS 3 ⁇ BS 7.
- Step S108 The target base station aggregates carrier resources of the base station other than the reference base station in the neighbor cell list according to the capability of the user terminal, where the specific operation is: the target base station determines the capability of the user terminal, and when the UE accesses the target base station The base station obtains the capability of the user terminal according to the relevant physical process (for example, a random access procedure); the target base station determines the number of base stations to be aggregated according to the capabilities of the user terminal, and/or the base station that performs aggregation.
- the bandwidth of each base station, wherein the capability of the user terminal may include the bandwidth capability of the user terminal (for example, the bandwidth of the user terminal).
- the bandwidth of the user terminal may be selected as four bandwidths. 5M base stations, and performing carrier aggregation on the four base stations, or selecting two base stations with a bandwidth of 10M, and performing carrier aggregation on the two base stations, and also selecting two bandwidths of 5M and one bandwidth. It is a 10M base station, and carrier aggregation is performed on the three base stations, and other selection methods are not used here. . It should be noted that, as the conditions of the user terminal change (for example, the movement of the user terminal, the change of the capability of the user terminal, etc.), if the new carrier formed after the aggregation by using the above method is regenerated, the inter-cell between the current system is not satisfied.
- the new reference base station can be reselected by the above method provided by the present invention for carrier aggregation.
- the user terminal uses the aggregated new resource
- the foregoing method provided by the present invention may be reused, so that the base station is used.
- the base station selects carrier resources other than the restricted interference source (interfering base station) that generates interference to the user terminal, and can effectively solve the carrier aggregation problem.
- Step S201 the target base station determines the restricted interference.
- Step S202 The target base station measures the interference signal strength of each base station in the neighbor cell list.
- Step S203 The target base station selects a base station whose interference signal strength is higher than the restricted interference source selection threshold as its restricted interference source (ie, the first interference base station described above).
- step S202 and step S203 the target base station finally determines a plurality of interference sources that generate strong inter-cell interference to the current cell according to the comparison result of the measured interference signal strength and the restricted interference source selection threshold.
- Step S204 The target base station allocates carrier resources for the restricted base 4 and ensures that the carrier resources remain orthogonal, that is, the target base station negotiates with each of the plurality of interference sources, so that the carrier of each two base stations The resources are orthogonal to each other, so that interference between cells can be effectively reduced.
- Step S205 The target base station determines the capability of the user terminal, where the capability of the user terminal mainly includes the bandwidth capability of the user terminal, and the bandwidth capability of the user terminal affects the number of carriers to be aggregated, and/or the bandwidth size of each carrier.
- Step S206 the user equipment measures the interference signal strength of each base station in the neighbor cell list, and sends the measurement result to the target base station.
- Step S207 The target base station determines, as the second interfering base station, the base station whose interference signal strength is greater than the preset interference source selection threshold in the measurement result, and the base station in the second interfering base station causes the user terminal to be dry, and the target base station It is checked whether the base station causing the user terminal is a restricted interference source.
- Step S208 The target base station determines a base station that causes interference to the user terminal in the restricted interference source. (ie, the reference base station above), and select carrier resources from any carrier resources other than the reference base stations for aggregation to form a new carrier to meet the capability requirements of the user terminal. For example, if the bandwidth of the user terminal is 30 M, three base stations with a bandwidth of 10 M can be selected, and carrier aggregation is performed for the three base stations. Six base stations with a bandwidth of 5 M can also be selected, and the six base stations are selected. The base station performs carrier aggregation.
- step S207 and step S208 when the target base station selects a carrier resource for the user terminal, selecting carrier resources that generate less inter-cell interference to the user terminal, that is, avoiding the limited interference source directly interfering with the user terminal, It is beneficial to further reduce inter-cell interference.
- Step S209 The target base station may select any carrier resource in the neighbor cell list to be aggregated to form a new carrier to meet the capability requirement of the user terminal. In this way, the base station can form a new carrier with a larger bandwidth that satisfies the capability of the user terminal through aggregation.
- the above method for carrier aggregation based on restricted interference sources is a generally applicable, easy-to-use, easy-to-use method that considers inter-cell interference.
- a computer readable medium having stored thereon computer executable instructions for causing a computer or processor to perform, for example, when executed by a computer or processor
- the processing of the steps shown in Figs. 1 and 2 can implement the above-described method embodiments.
- Apparatus Embodiments According to an embodiment of the present invention, a device for implementing carrier aggregation is provided, and the apparatus may be located at a base station side, and may be used to implement the foregoing method for implementing carrier aggregation. FIG.
- the apparatus includes a first determining module 1, a second determining module 2, an obtaining module 3, and a carrier aggregation module 4.
- the function of each module is described below.
- the first determining module 1 is configured to determine a first interfering base station that causes interference to the base station;
- the second determining module 2 is configured to determine a second interfering base station that causes interference to the user terminal;
- the obtaining module 3 is connected to the first determining module 1
- a second determining module 2 configured to: the first interfering base station and the second interfering base station The intersection aggregation is performed to obtain a reference base station.
- the carrier aggregation module 4 is connected to the acquisition module 3, and is configured to aggregate carrier resources of base stations other than the reference base station according to the capability of the user equipment.
- FIG. 4 is a schematic structural diagram of a device for implementing carrier aggregation according to an embodiment of the present invention. As shown in FIG. 4, on the basis of the device shown in FIG. 3, the first determining module 1 includes a measurement submodule 12 and a first The sub-module 14 is determined, and the second determining module 2 includes a receiving sub-module 22 and a second determining sub-module 24.
- the first determining module 1 includes: a measuring sub-module 12, configured to measure an interference signal strength of each base station in a neighboring cell list of the base station; a first determining sub-module 14 connected to the measuring sub-module 12, configured to use the interference signal strength A base station that is larger than a preset interference source selection threshold is determined to be the first base station.
- the second determining module 2 includes: a receiving submodule 22, configured to receive the measurement result reported by the user terminal, where the measurement result includes an interference signal strength of each base station in the neighboring cell list of the target base station to the user terminal;
- the sub-module 24 is connected to the receiving sub-module 22, and is configured to determine, as a second base station, a base station whose interference signal strength in the measurement result is greater than a preset interference source selection threshold.
- the restricted interference source of the cell is determined according to the interference source signal strength selection threshold, and the interference of the neighboring cell is limited to a certain range, and in the resource During the planning, it is ensured that the resources occupied by the restricted source 4 are completely orthogonal.
- the base station performs carrier aggregation for the user terminal, the base station selects a carrier resource other than the restricted source 4 of the user terminal to perform aggregation.
- the carrier aggregation is considered, the system overhead of the inter-cell interference coordination is too large, the round-trip delay is too long, and the carrier reselection probability becomes large.
- modules or steps of the present invention can be implemented by a general-purpose computing device, which can be concentrated on a single computing device or distributed over a network composed of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device, such that they may be stored in the storage device by the computing device, or they may be separately fabricated into individual integrated circuit modules, or they may be Multiple modules or steps are made into a single integrated circuit module. Thus, the invention is not limited to any specific combination of hardware and software.
Abstract
A method and a device for realizing carrier aggregation are provided. The method involves that the target base station determines the first interfering base station that interferes with the target base station itself (S102); the target base station determines the second interfering base station that interferes with the user terminal (S104); the target base station determines the reference base station according to the first interfering base station and the second interfering base station (S106); the target base station aggregates the carrier resources of the base stations except the reference base station according to the ability of the user terminal (S108). The embodiment of the invention can solve the problem that the overhead is too many and the round-trip delay is too long and the carrier reelection probability is bigger which are caused by thinking of the interference harmony between the cells when the carrier is aggregated. The invention can also effectively reduce the interference between the cells when the carrier aggregation can satisfy the need of the user terminal bandwidth, so the wireless communication quality of the user terminal can be assured.
Description
载波聚合的实现方法和装置 Method and device for implementing carrier aggregation
技术领域 本发明涉及通信领域， 尤其涉及一种载波聚合的实现方法和装置。 背景技术 在下一代的宽带无线通信网络中，解决如何在当前的无线通信系统带宽 下支持更大的带宽成为提高小区间用户终端（ User Terminal, 筒称为 UT )吞 吐量及 UT平均吞吐量的一个关键因素。 目前， 第三代合作伙伴计划的长期演进（ Long Term Evolution, 筒称为 LTE ) 系统中提出： 采用载波聚合的方式来有效地在当前的无线通信系统中 支持更大的带宽， 以满足新一代无线标准中对吞吐量、 峰值速率等指标的需 求。 载波聚合是未来无线通信系统中的关键技术， 利用该技术可以支持更大 的带宽， 通过对不同的载波进行聚合， 形成更大带宽的载波， 从而可以在聚 合后的带宽上支持具有更强能力的 UT。 例如， 在高级长期演进系统 ( Long-Term Evolution Advanced , 筒称为 LTE-Advanced )中， 可以提供超过 100 MHz的带宽。 但是， 目前 LTE-Advanced 中讨论的载波聚合没有考虑到对小区间 UT 吞吐量及小区间 UT平均吞吐量起重要作用的小区间干扰的影响， 如果聚合 的载波部分遭受到严重的小区间干扰的影响， 则即使得到了更大的带宽， 也 会因为严重的小区间干扰使使用该部分聚合载波的 UT的吞吐量和速率性能 下降， 从而抵消了载波聚合带来的好处。 现有相关技术中没有考虑到载波聚合中小区间干扰对 UT吞吐量及平均 吞吐量的影响而导致 UT的吞吐量和速率性能下降的问题， 且目前尚未提出 有效的解决方案。 发明内容 针对现有技术中没有考虑到载波聚合中小区间干扰对 UT吞吐量及平均 吞吐量的影响而导致 UT的吞吐量和速率性能下降的问题而提出本发明， 为 此， 本发明的主要目的在于提供一种基于受限干扰源的载波聚合方案， 以解
决上述问题。 才艮据本发明的一个方面， 提供了一种载波聚合的实现方法。 根据本发明的载波聚合的实现方法包括： 目标基站确定对其造成干扰的 第一干扰基站； 目标基站确定对用户终端造成干扰的第二干扰基站； 目标基 站才艮据第一干扰基站和第二干扰基站确定参考基站； 目标基站才艮据用户终端 的能力对除参考基站之外的基站的载波资源进行聚合。 优选地， 目标基站确定对其造成干扰的第一干扰基站包括： 目标基站测 量其邻小区列表中的每个基站的干扰信号强度， 并将干扰信号强度大于预先 设置的受限干扰源选择阈值的基站确定为第一干扰基站。 优选地， 目标基站确定第一干 4尤基站之后， 上述方法还包括： 对于目标 基站和第一干扰基站， 其中的每两个基站进行协商， 使得每两个基站的载波 资源两两正交。 优选地 , 目标基站确定对用户终端造成干扰的第二干扰基站包括： 基站 接收由用户终端上报的测量结果， 其中， 测量结果包括目标基站的邻小区列 表中的每个基站对用户终端的干扰信号强度； 目标基站将测量结果中干扰信 号强度大于预先设置的受限干扰源选择阈值的基站确定为第二干扰基站。 优选地， 目标基站确定参考基站包括： 目标基站对第一干扰基站和第二 干扰基站取交集， 获得参考基站。 优选地， 目标基站才艮据用户终端的能力对除参考基站之外的基站的载波 资源进行聚合包括： 目标基站确定用户终端的能力； 目标基站根据用户终端 的能力， 确定进行聚合的基站的数目， 和 /或进行聚合的基站中每个基站的带 宽大小。 优选地， 用户终端的能力包括： 用户终端的带宽能力。 根据本发明的另一个方面， 提供了一种载波聚合的实现装置， 该装置可 以位于基站侧。 根据本发明的载波聚合的实现装置包括： 第一确定模块， 用于确定对基 站造成干扰的第一干扰基站； 第二确定模块， 用于确定对用户终端造成干扰 的第二干扰基站； 获取模块， 用于对第一干扰基站和第二干扰基站取交集，
获得参考基站； 载波聚合模块 , 用于根据用户终端的能力对除参考基站之外 的基站的载波资源进行聚合。 优选地， 上述第一确定模块包括： 测量子模块， 用于测量基站的邻小区 列表中的每个基站的干扰信号强度； 第一确定子模块 , 用于将干扰信号强度 大于预先设置的受限干扰源选择阈值的基站确定为第一干扰基站。 优选地， 第二确定模块包括： 接收子模块， 用于接收由用户终端上报的 测量结果， 其中， 测量结果包括目标基站的邻小区列表中的每个基站对用户 终端的干扰信号强度； 第二确定子模块， 用于将测量结果中干扰信号强度大 于预先设置的受限干扰源选择阈值的基站确定为第二干扰基站。 通过本发明的上述至少一个技术方案，基站在为用户终端进行载波聚合 时， 选择对该用户终端产生干扰的受限干扰源 （干扰基站） 以外的载波资源 进行聚合， 能够有效解决载波聚合时由于考虑小区间干扰协调的系统开销过 大、 往返时延过长、 载波重选概率变大的问题， 并在载波聚合满足用户终端 带宽需求的情况下， 可以有效地降低 、区间干扰， 从而可以确保用户终端的 无线通信质量。 附图说明 附图用来提供对本发明的进一步理解， 并且构成说明书的一部分， 与本 发明的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： 图 1是才艮据本发明实施例的载波聚合的实现方法的流程图； 图 2是才艮据本发明实施例的载波聚合的实现方法的详细流程图； 图 3是根据本发明实施例的载波聚合的实现装置的结构框图； 图 4是根据本发明优选实施例的载波聚合的实现装置的结构框图。 具体实施方式 功能相克述 考虑到相关技术中没有考虑到载波聚合中小区间干扰对 UT吞吐量及平 均吞吐量的影响而导致 UT的吞吐量和速率性能下降的问题， 本发明实施例
提供了一种基于受限干扰源的载波聚合的实现方案， 本发明的基本思想是： 根据干扰源信号强度选择阈值确定小区的受限干扰源， 将邻小区的干扰限制 在一定的范围内， 并且在资源规划时保证受限干 4尤源占用的资源完全正交， 基站在为用户终端进行载波聚合时， 选择对用户终端产生干扰的受限干扰源 以外的载波资源进行聚合。 能够有效解决载波聚合时由于考虑小区间干扰协 调 （ICIC ) 时的系统开销过大、 往返时延过长、 载波重选概率变大的缺陷， 在实现载波聚合以满足用户终端带宽需求的情况下， 有效地可以降低小区间 干 4尤， 从而可以确保用户终端的无线通信质量的方法。 在不冲突的情况下， 本申请中的实施例及实施例中的特征可以相互组 合。 以下结合附图对本发明的优选实施例进行说明 , 应当理解 , 此处所描述 的优选实施例仅用于说明和解释本发明， 并不用于限定本发明。 方法实施例 才艮据本发明实施例 , 提供了一种载波聚合的实现方法。 图 1 是根据本发明实施例的基站状态控制方法的流程图， 需要说明的 是， 为了便于描述， 在图 1中以步骤的形式示出并描述了本发明的方法实施 例的技术方案， 在图 1中所示出的步骤可以在诸如一组计算机可执行指令的 计算机系统中执行。 虽然在图 1中示出了逻辑顺序， 但是在某些情况下， 可 以以不同于 jt匕处的顺序执行所示出或描述的步骤。 如图 1所示， 该方法用于 确定对待传输块进行分割所需的参数， 主要包括以下步骤 （步骤 S102 至步 骤 S108 ): 步骤 S102, 目标基站确定对其 （即， 该目标基站） 造成干扰的第一干 扰基站（即， 上文所述的受限干扰源）， 具体操作为： 目标基站测量其邻小区 列表中的每个基站的干扰信号强度， 并将干扰信号强度大于预先设置的受限 干扰源选择阈值的基站确定为第一干扰基站， 可以看出， 该第一干扰基站为 一个基站集合， 之后， 对于目标基站和第一干扰基站， 令其中的每两个基站 进行协商， 使得每两个基站的载波资源两两正交。 步骤 S104, 目标基站确定对用户终端造成干 4尤的第二干 4尤基站， 该用 户终端当前归属于目标基站， 即， 该目标基站为该用户终端的月 务基站。 该 步骤的具体操作为： 基站接收由用户终端上报的测量结果， 其中， 测量结果
包括目标基站的邻小区列表中的每个基站对用户终端的干扰信号强度； 目标 基站将测量结果中干扰信号强度大于预先设置的受限干扰源选择阈值的基站 确定为第二干扰基站， 可以看出， 该第二干扰基站为一个基站集合。 步骤 S 106 , 目标基站才艮据第一干扰基站和第二干扰基站确定参考基站， 具体操作为： 目标基站对第一干扰基站和第二干扰基站取交集， 获得参考基 站， 该参考基站为一个基站集合， 且该集合可以为空集， 例如， 第一干扰基 站为 BS 1、 BS 2、 BS 3、 BS 4、 BS 7, 第二干 4尤基站为 BS 3、 BS 5、 BS 6、 BS 7、 BS 8 , 将第一干扰基站与第二干扰基站取交集之后， 获得的参考基站 为： BS 3 ^ BS 7。 步骤 S108 , 目标基站才艮据用户终端的能力对上述邻小区列表中除参考 基站之外的基站的载波资源进行聚合， 具体操作为： 目标基站确定用户终端 的能力 , 当 UE接入到目标基站时， 基站就会根据相关的物理过程（例如， 随机接入过程 ) 获得用户终端的能力； 目标基站才艮据用户终端的能力 , 确定 进行聚合的基站的数目，和 /或进行聚合的基站中每个基站的带宽大小，其中， 用户终端的能力可以包括用户终端的带宽能力（例如，用户终端的带宽大小）， 例如， 個设用户终端的带宽大小为 20M, 则可以选择 4个带宽大小为 5M的 基站， 并对该 4个基站进行载波聚合， 也可以选择 2个带宽大小为 10M的基 站， 并对该 2个基站进行载波聚合， 还可以选择 2个带宽大小为 5M和 1个 带宽大小为 10M的基站， 并对该 3个基站进行载波聚合， 以及其他的选择方 法， 这里不再——赘述。 需要说明的是， 随着用户终端所处的条件的变化（例如， 用户终端的移 动、用户终端能力的变更等）， 如果使用上述方法聚合后形成的新载波重新产 生了不满足当前系统中小区间干扰的策略 , 则可以使用本发明提供的上述方 法重新选择新的参考基站， 以进行载波聚合。 例如， 当用户终端使用聚合后 的新资源时， 如果该用户终端检测到新资源对其 （即， 该用户终端） 造成的 干扰较大时， 则可以重新使用本发明提供的上述方法， 使得基站为该用户终 端选择新的资源。 通过本发明实施例提供的技术方案， 基站在为用户终端进行载波聚合 时， 选择对该用户终端产生干扰的受限干扰源 （干扰基站） 以外的载波资源 进行聚合， 能够有效解决载波聚合时由于考虑小区间干扰协调的系统开销过 大、 往返时延过长、 载波重选概率变大的问题， 并在载波聚合满足用户终端 带宽需求的情况下， 可以有效地降低 、区间干扰， 从而可以确保用户终端的
无线通信质量。 图 2 是才艮据本发明方法实施例的载波聚合的实现方法的详细处理流程 图， 如图 2所示， 主要包括以下处理 (步骤 S201至步骤 S209 ): 步骤 S201 , 目标基站确定受限干扰源选择阈值， 其中， 该受限干扰源 选择阈值用来确定对本小区基站引起较强的小区间干扰的所有基站， 该阈值 会最终影响小区间干扰协调时的系统开销、 往返时延、 以及确定的受限干扰 源所占用的时频资源的正交性， 并且， 在不同的基站中可以设置不同的受限 干扰源选择阈值， 有利于有效确定主要干扰源。 步骤 S202, 目标基站测量其邻小区列表中每个基站的干扰信号强度。 步骤 S203 , 目标基站选择干扰信号强度高于受限干扰源选择阈值的基 站作为其受限干扰源 （即， 上文所述的第一干扰基站）。 在步骤 S202和步骤 S203 中， 目标基站根据测量的干扰信号强度与受 限干扰源选择阈值的对比结果， 最终确定对当前小区产生较强小区间干扰的 若干个干扰源。 步骤 S204, 目标基站为受限干 4尤源划分载波资源， 并确保载波资源保 持正交， 即， 目标基站与上述若干个干扰源中的每两个基站进行协商， 使得 每两个基站的载波资源两两正交， 这样， 能够有效地降低小区间的干扰。 步骤 S205 , 目标基站确定用户终端的能力， 该用户终端的能力主要包 括用户终端的带宽能力 ,用户终端的带宽能力会影响进行聚合的载波的数目 , 和 /或每个载波的带宽大小。 步骤 S206, 用户终端测量邻小区列表中每个基站的干扰信号强度， 并 将测量结果上 ~¾给目标基站。 步骤 S207, 目标基站将测量结果中干扰信号强度大于预先设置的受限 干扰源选择阈值的基站确定为第二干扰基站， 该第二干扰基站中的基站会对 用户终端造成干 4尤， 目标基站检查对用户终端造成干 4尤的基站是否为受限干 扰源， 如果判断结果为 "是"， 则转到步骤 S208 , 如果判断结果为 "否"， 则 转到步骤 S209。 步骤 S208 , 目标基站确定出受限干扰源中对用户终端造成干扰的基站
(即， 上文的参考基站）， 并从除这些参考基站以外的任何载波资源上选择载 波资源进行聚合， 形成新的载波以满足用户终端的能力需求。 例如， 假设用 户终端的带宽大小为 30M, 则可以选择 3个带宽大小为 10M的基站， 并对 该 3个基站进行载波聚合； 也可以选择 6个带宽大小为 5M的基站， 并对该 6个基站进行载波聚合； 还可以选择 2个带宽大小为 5M和 2个带宽大小为 10M的基站， 并对该 4个基站进行载波聚合， 以及其他的选择方法， 这里不 ——赘述。 在步骤 S207和步骤 S208中， 在目标基站为用户终端选择载波资源时， 要选择那些对用户终端产生小区间干扰较小的载波资源， 即， 避开直接干扰 用户终端的受限干扰源， 这样有利于进一步降低小区间干扰。 步骤 S209 , 目标基站可以选择邻小区列表中的任何载波资源进行聚合 , 形成新的载波以满足用户终端的能力需求。 这样， 基站通过聚合， 能够形成 更大带宽的满足用户终端能力的新载波。 上述的基于受限干扰源的载波聚合的方法是考虑了小区间干扰的一种 普遍适用、 筒便、 易用的方法。 才艮据本发明实施例， 还提供了一种计算机可读介质， 该计算机可读介质 上存储有计算机可执行的指令， 当该指令被计算机或处理器执行时， 使得计 算机或处理器执行如图 1和图 2所示的各步骤的处理， 可以实现上述的方法 实施例。 装置实施例 根据本发明的实施例， 提供了一种载波聚合的实现装置， 该装置可以位 于基站侧 , 并可以用于实现上述的载波聚合的实现方法。 图 3 是根据本发明实施例的载波聚合的实现装置的结构框图， 如图 3 所示， 该装置包括第一确定模块 1、 第二确定模块 2、 获取模块 3、 和载波聚 合模块 4。 下面对各模块的功能进行描述。 第一确定模块 1 , 用于确定对基站造成干扰的第一干扰基站； 第二确定 模块 2, 用于确定对用户终端造成干扰的第二干扰基站； 获取模块 3 , 连接 至第一确定模块 1和第二确定模块 2, 用于对第一干扰基站和第二干扰基站
取交集， 获得参考基站； 载波聚合模块 4, 连接至获取模块 3 , 用于根据用 户终端的能力对除参考基站之外的基站的载波资源进行聚合。 图 4示出了本发明实施例的载波聚合的实现装置的优选结构框架图，如 图 4所示， 在图 3所示装置的基础上， 第一确定模块 1 包括测量子模块 12 和第一确定子模块 14 , 第二确定模块 2包括接收子模块 22和第二确定子模 块 24。 第一确定模块 1 包括： 测量子模块 12 , 用于测量基站的邻小区列表中 的每个基站的干扰信号强度； 第一确定子模块 14, 连接至测量子模块 12, 用于将干扰信号强度大于预先设置的受限干扰源选择阈值的基站确定为第一 干 4尤基站。 第二确定模块 2 包括： 接收子模块 22 , 用于接收由用户终端上报的测 量结果， 其中， 测量结果包括目标基站的邻小区列表中的每个基站对用户终 端的干扰信号强度； 第二确定子模块 24, 连接至接收子模块 22, 用于将测 量结果中干扰信号强度大于预先设置的受限干扰源选择阈值的基站确定为第 二干 4尤基站。 如上所述， 借助于本发明提供的载波聚合的实现方法和 /或装置， 根据 干扰源信号强度选择阈值确定小区的受限干扰源， 将邻小区的干扰限制在一 定的范围内 , 并且在资源规划时保证受限干 4尤源占用的资源完全正交， 基站 在为用户终端进行载波聚合时， 选择对用户终端产生干 4尤的受限干 4尤源以外 的载波资源进行聚合。 能够有效的解决载波聚合时由于考虑小区间干扰协调 时的系统开销过大、 往返时延过长、 载波重选概率变大的缺陷， 在实现载波 聚合以满足用户终端带宽需求的情况下， 可以有效地降低小区间干扰， 从而 可以确保用户终端的无线通信质量的方法。 显然， 本领域的技术人员应该明白， 上述的本发明的各模块或各步骤可 以用通用的计算装置来实现， 它们可以集中在单个的计算装置上， 或者分布 在多个计算装置所组成的网络上， 可选地， 它们可以用计算装置可执行的程 序代码来实现， 从而， 可以将它们存储在存储装置中由计算装置来执行， 或 者将它们分别制作成各个集成电路模块， 或者将它们中的多个模块或步骤制 作成单个集成电路模块来实现。 这样， 本发明不限制于任何特定的硬件和软 件结合。
以上所述仅为本发明的优选实施例而已， 并不用于限制本发明， 对于本 领域的技术人员来说， 本发明可以有各种更改和变化。 凡在本发明的^^申和 原则之内， 所作的任何修改、 等同替换、 改进等， 均应包含在本发明的保护 范围之内。
TECHNICAL FIELD The present invention relates to the field of communications, and in particular, to a method and an apparatus for implementing carrier aggregation. BACKGROUND In a next-generation broadband wireless communication network, how to support a larger bandwidth under the bandwidth of a current wireless communication system is to improve the inter-cell user terminal (UT terminal) throughput and UT average throughput. A key factor. At present, the Long Term Evolution (LTE) system of the 3rd Generation Partnership Project proposes: Carrier aggregation is adopted to effectively support larger bandwidth in current wireless communication systems to meet the new generation. The need for metrics such as throughput and peak rate in the wireless standard. Carrier aggregation is a key technology in future wireless communication systems. It can support larger bandwidths by using different technologies to form larger bandwidth carriers, which can support stronger bandwidth in aggregated bandwidth. UT. For example, in the Long-Term Evolution Advanced (LTE-Advanced), it can provide more than 100 MHz of bandwidth. However, the carrier aggregation discussed in LTE-Advanced does not take into account the impact of inter-cell interference that plays an important role in inter-cell UT throughput and inter-cell UT average throughput, if the aggregated carrier part suffers severe inter-cell interference. Impact, even if a larger bandwidth is obtained, the throughput and rate performance of the UT using the partially aggregated carrier is degraded due to severe inter-cell interference, thereby offsetting the benefits of carrier aggregation. The existing related art does not consider the problem that the inter-cell interference in the carrier aggregation affects the UT throughput and the average throughput, and the throughput and rate performance of the UT are degraded, and an effective solution has not been proposed yet. SUMMARY OF THE INVENTION The present invention has been made in view of the problem in the prior art that the impact of inter-cell interference on UT throughput and average throughput in carrier aggregation is reduced, resulting in a decrease in throughput and rate performance of the UT. To this end, the main purpose of the present invention is It is to provide a carrier aggregation scheme based on a restricted interference source to solve The above issues are resolved. According to an aspect of the present invention, a method of implementing carrier aggregation is provided. The method for implementing carrier aggregation according to the present invention includes: a target base station determining a first interfering base station causing interference thereto; a target base station determining a second interfering base station causing interference to the user terminal; and the target base station according to the first interfering base station and the second The interfering base station determines the reference base station; the target base station aggregates the carrier resources of the base station other than the reference base station according to the capability of the user terminal. Preferably, the first base station determined by the target base station to cause interference includes: the target base station measures the interference signal strength of each base station in the neighbor cell list, and the interference signal strength is greater than a preset restricted interference source selection threshold. The base station is determined to be the first interfering base station. Preferably, after the target base station determines the first base station, the method further includes: for the target base station and the first interfering base station, each of the two base stations negotiates, so that the carrier resources of each two base stations are orthogonal to each other. Preferably, the second base station that the target base station determines to cause interference to the user terminal includes: the base station receives the measurement result reported by the user terminal, where the measurement result includes an interference signal of each base station in the neighbor cell list of the target base station to the user terminal. Intensity; the target base station determines, as the second interfering base station, a base station whose interference signal strength is greater than a preset interference source selection threshold in the measurement result. Preferably, the determining, by the target base station, the reference base station comprises: the target base station taking an intersection of the first interfering base station and the second interfering base station, and obtaining the reference base station. Preferably, the target base station aggregates carrier resources of the base station other than the reference base station according to the capability of the user terminal, including: the target base station determines the capability of the user terminal; and the target base station determines the number of base stations to perform aggregation according to the capability of the user terminal. , and/or the bandwidth size of each base station in the base station where the aggregation takes place. Preferably, the capabilities of the user terminal include: bandwidth capabilities of the user terminal. According to another aspect of the present invention, an apparatus for implementing carrier aggregation is provided, which may be located at a base station side. The device for implementing carrier aggregation according to the present invention includes: a first determining module, configured to determine a first interfering base station that causes interference to the base station; a second determining module, configured to determine a second interfering base station that causes interference to the user terminal; And configured to take an intersection between the first interfering base station and the second interfering base station, Obtaining a reference base station; a carrier aggregation module, configured to aggregate carrier resources of base stations other than the reference base station according to capabilities of the user equipment. Preferably, the foregoing first determining module includes: a measuring submodule, configured to measure an interference signal strength of each base station in a neighboring cell list of the base station; and a first determining submodule, configured to use the interference signal strength to be greater than a preset limit The base station that interferes with the source selection threshold is determined to be the first interfering base station. Preferably, the second determining module includes: a receiving submodule, configured to receive the measurement result reported by the user terminal, where the measurement result includes an interference signal strength of each base station in the neighboring cell list of the target base station to the user terminal; And a determining submodule, configured to determine, as the second interfering base station, a base station whose interference signal strength in the measurement result is greater than a preset interference source selection threshold. With the above-mentioned at least one aspect of the present invention, when the base station performs carrier aggregation for the user terminal, the base station selects carrier resources other than the restricted interference source (interfering base station) that interferes with the user terminal, and can effectively solve the problem of carrier aggregation. Considering the problem that the system overhead of inter-cell interference coordination is too large, the round-trip delay is too long, and the carrier reselection probability becomes large, and the carrier aggregation can meet the bandwidth requirement of the user terminal, the interference can be effectively reduced and the interference can be ensured. The quality of wireless communication of the user terminal. The drawings are intended to provide a further understanding of the invention, and are intended to be a part of the description of the invention. In the drawings: FIG. 1 is a flowchart of a method for implementing carrier aggregation according to an embodiment of the present invention; FIG. 2 is a detailed flowchart of a method for implementing carrier aggregation according to an embodiment of the present invention; A block diagram of a device for implementing carrier aggregation according to an embodiment of the present invention; and FIG. 4 is a structural block diagram of an apparatus for implementing carrier aggregation according to a preferred embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention is directed to the problem that the throughput and rate performance of the UT are degraded due to the impact of the inter-cell interference in the carrier aggregation on the UT throughput and the average throughput. An implementation scheme of carrier aggregation based on a restricted interference source is provided. The basic idea of the present invention is: determining a restricted interference source of a cell according to an interference source signal strength selection threshold, and limiting interference of the neighboring cell to a certain range. In the resource planning, the resources occupied by the restricted source 4 are completely orthogonal. When the base station performs carrier aggregation for the user terminal, the base station selects carrier resources other than the restricted interference source that interferes with the user terminal to perform aggregation. It can effectively solve the defect that the system overhead is too large, the round-trip delay is too long, and the carrier reselection probability becomes large when considering the inter-cell interference coordination (ICIC) during carrier aggregation, and the carrier aggregation is implemented to meet the bandwidth requirement of the user terminal. The method of effectively reducing the quality of wireless communication of the user terminal can be effectively reduced. The embodiments in the present application and the features in the embodiments may be combined with each other without conflict. The preferred embodiments of the present invention are described in the following with reference to the accompanying drawings, which are intended to illustrate and illustrate the invention. Method Embodiments According to an embodiment of the present invention, a method for implementing carrier aggregation is provided. 1 is a flowchart of a base station state control method according to an embodiment of the present invention. It should be noted that, for convenience of description, the technical solution of the method embodiment of the present invention is shown and described in FIG. The steps illustrated in Figure 1 may be performed in a computer system such as a set of computer executable instructions. Although the logical order is illustrated in FIG. 1, in some cases, the steps shown or described may be performed in an order different than jt. As shown in FIG. 1 , the method is used to determine parameters required for segmentation of a block to be transported, and mainly includes the following steps (step S102 to step S108 ): Step S102 , the target base station determines to cause interference to the (ie, the target base station) The first interfering base station (ie, the restricted interference source described above), the specific operation is: the target base station measures the interference signal strength of each base station in the neighbor cell list, and the interference signal strength is greater than the preset The base station that limits the source selection threshold is determined to be the first interfering base station. It can be seen that the first interfering base station is a set of base stations, and then, for the target base station and the first interfering base station, each of the two base stations is negotiated, so that The carrier resources of each two base stations are orthogonal to each other. Step S104: The target base station determines a second base station that is caused by the user terminal, and the user terminal is currently at the target base station, that is, the target base station is a monthly base station of the user terminal. The specific operation of the step is: the base station receives the measurement result reported by the user terminal, where the measurement result Including the interference signal strength of each base station in the neighbor cell list of the target base station to the user terminal; the target base station determines, as the second interference base station, the base station whose interference signal strength is greater than the preset restricted interference source selection threshold in the measurement result. The second interfering base station is a set of base stations. Step S106: The target base station determines the reference base station according to the first interfering base station and the second interfering base station, where the target base station obtains an intersection between the first interfering base station and the second interfering base station, and obtains a reference base station, where the reference base station is a The base station is aggregated, and the set may be an empty set. For example, the first interfering base station is BS 1, BS 2, BS 3, BS 4, BS 7, and the second base station is BS 3, BS 5, BS 6, BS. 7. BS 8 , after the first interfering base station and the second interfering base station are intersected, the obtained reference base station is: BS 3 ^ BS 7. Step S108: The target base station aggregates carrier resources of the base station other than the reference base station in the neighbor cell list according to the capability of the user terminal, where the specific operation is: the target base station determines the capability of the user terminal, and when the UE accesses the target base station The base station obtains the capability of the user terminal according to the relevant physical process (for example, a random access procedure); the target base station determines the number of base stations to be aggregated according to the capabilities of the user terminal, and/or the base station that performs aggregation. The bandwidth of each base station, wherein the capability of the user terminal may include the bandwidth capability of the user terminal (for example, the bandwidth of the user terminal). For example, if the bandwidth of the user terminal is 20M, the bandwidth of the user may be selected as four bandwidths. 5M base stations, and performing carrier aggregation on the four base stations, or selecting two base stations with a bandwidth of 10M, and performing carrier aggregation on the two base stations, and also selecting two bandwidths of 5M and one bandwidth. It is a 10M base station, and carrier aggregation is performed on the three base stations, and other selection methods are not used here. . It should be noted that, as the conditions of the user terminal change (for example, the movement of the user terminal, the change of the capability of the user terminal, etc.), if the new carrier formed after the aggregation by using the above method is regenerated, the inter-cell between the current system is not satisfied. For the interference strategy, the new reference base station can be reselected by the above method provided by the present invention for carrier aggregation. For example, when the user terminal uses the aggregated new resource, if the user terminal detects that the new resource causes a large interference to the user terminal (ie, the user terminal), the foregoing method provided by the present invention may be reused, so that the base station is used. Select a new resource for the user terminal. With the technical solution provided by the embodiment of the present invention, when the base station performs carrier aggregation for the user terminal, the base station selects carrier resources other than the restricted interference source (interfering base station) that generates interference to the user terminal, and can effectively solve the carrier aggregation problem. Considering the problem that the system overhead of inter-cell interference coordination is too large, the round-trip delay is too long, and the carrier reselection probability becomes large, and the carrier aggregation can meet the bandwidth requirement of the user terminal, the interference can be effectively reduced and the interference can be ensured. User terminal Wireless communication quality. 2 is a detailed processing flowchart of a method for implementing carrier aggregation according to an embodiment of the method of the present invention. As shown in FIG. 2, the method mainly includes the following processing (step S201 to step S209): Step S201, the target base station determines the restricted interference. a source selection threshold, where the restricted interference source selection threshold is used to determine all base stations that cause strong inter-cell interference to the base station of the local cell, and the threshold may ultimately affect system overhead, round-trip delay, and determination when inter-cell interference coordination The orthogonality of the time-frequency resources occupied by the restricted interference source, and different restricted interference source selection thresholds can be set in different base stations, which is beneficial for effectively determining the main interference source. Step S202: The target base station measures the interference signal strength of each base station in the neighbor cell list. Step S203: The target base station selects a base station whose interference signal strength is higher than the restricted interference source selection threshold as its restricted interference source (ie, the first interference base station described above). In step S202 and step S203, the target base station finally determines a plurality of interference sources that generate strong inter-cell interference to the current cell according to the comparison result of the measured interference signal strength and the restricted interference source selection threshold. Step S204: The target base station allocates carrier resources for the restricted base 4 and ensures that the carrier resources remain orthogonal, that is, the target base station negotiates with each of the plurality of interference sources, so that the carrier of each two base stations The resources are orthogonal to each other, so that interference between cells can be effectively reduced. Step S205: The target base station determines the capability of the user terminal, where the capability of the user terminal mainly includes the bandwidth capability of the user terminal, and the bandwidth capability of the user terminal affects the number of carriers to be aggregated, and/or the bandwidth size of each carrier. Step S206, the user equipment measures the interference signal strength of each base station in the neighbor cell list, and sends the measurement result to the target base station. Step S207: The target base station determines, as the second interfering base station, the base station whose interference signal strength is greater than the preset interference source selection threshold in the measurement result, and the base station in the second interfering base station causes the user terminal to be dry, and the target base station It is checked whether the base station causing the user terminal is a restricted interference source. If the determination result is "Yes", then go to step S208, and if the result of the determination is "NO", go to step S209. Step S208: The target base station determines a base station that causes interference to the user terminal in the restricted interference source. (ie, the reference base station above), and select carrier resources from any carrier resources other than the reference base stations for aggregation to form a new carrier to meet the capability requirements of the user terminal. For example, if the bandwidth of the user terminal is 30 M, three base stations with a bandwidth of 10 M can be selected, and carrier aggregation is performed for the three base stations. Six base stations with a bandwidth of 5 M can also be selected, and the six base stations are selected. The base station performs carrier aggregation. It can also select two base stations with a bandwidth of 5M and two bandwidths of 10M, and perform carrier aggregation on the four base stations, and other selection methods, which are not described here. In step S207 and step S208, when the target base station selects a carrier resource for the user terminal, selecting carrier resources that generate less inter-cell interference to the user terminal, that is, avoiding the limited interference source directly interfering with the user terminal, It is beneficial to further reduce inter-cell interference. Step S209: The target base station may select any carrier resource in the neighbor cell list to be aggregated to form a new carrier to meet the capability requirement of the user terminal. In this way, the base station can form a new carrier with a larger bandwidth that satisfies the capability of the user terminal through aggregation. The above method for carrier aggregation based on restricted interference sources is a generally applicable, easy-to-use, easy-to-use method that considers inter-cell interference. According to an embodiment of the present invention, there is also provided a computer readable medium having stored thereon computer executable instructions for causing a computer or processor to perform, for example, when executed by a computer or processor The processing of the steps shown in Figs. 1 and 2 can implement the above-described method embodiments. Apparatus Embodiments According to an embodiment of the present invention, a device for implementing carrier aggregation is provided, and the apparatus may be located at a base station side, and may be used to implement the foregoing method for implementing carrier aggregation. FIG. 3 is a structural block diagram of an apparatus for implementing carrier aggregation according to an embodiment of the present invention. As shown in FIG. 3, the apparatus includes a first determining module 1, a second determining module 2, an obtaining module 3, and a carrier aggregation module 4. The function of each module is described below. The first determining module 1 is configured to determine a first interfering base station that causes interference to the base station; the second determining module 2 is configured to determine a second interfering base station that causes interference to the user terminal; and the obtaining module 3 is connected to the first determining module 1 And a second determining module 2, configured to: the first interfering base station and the second interfering base station The intersection aggregation is performed to obtain a reference base station. The carrier aggregation module 4 is connected to the acquisition module 3, and is configured to aggregate carrier resources of base stations other than the reference base station according to the capability of the user equipment. FIG. 4 is a schematic structural diagram of a device for implementing carrier aggregation according to an embodiment of the present invention. As shown in FIG. 4, on the basis of the device shown in FIG. 3, the first determining module 1 includes a measurement submodule 12 and a first The sub-module 14 is determined, and the second determining module 2 includes a receiving sub-module 22 and a second determining sub-module 24. The first determining module 1 includes: a measuring sub-module 12, configured to measure an interference signal strength of each base station in a neighboring cell list of the base station; a first determining sub-module 14 connected to the measuring sub-module 12, configured to use the interference signal strength A base station that is larger than a preset interference source selection threshold is determined to be the first base station. The second determining module 2 includes: a receiving submodule 22, configured to receive the measurement result reported by the user terminal, where the measurement result includes an interference signal strength of each base station in the neighboring cell list of the target base station to the user terminal; The sub-module 24 is connected to the receiving sub-module 22, and is configured to determine, as a second base station, a base station whose interference signal strength in the measurement result is greater than a preset interference source selection threshold. As described above, with the implementation method and/or apparatus for carrier aggregation provided by the present invention, the restricted interference source of the cell is determined according to the interference source signal strength selection threshold, and the interference of the neighboring cell is limited to a certain range, and in the resource During the planning, it is ensured that the resources occupied by the restricted source 4 are completely orthogonal. When the base station performs carrier aggregation for the user terminal, the base station selects a carrier resource other than the restricted source 4 of the user terminal to perform aggregation. When the carrier aggregation is considered, the system overhead of the inter-cell interference coordination is too large, the round-trip delay is too long, and the carrier reselection probability becomes large. In the case of implementing carrier aggregation to meet the bandwidth requirement of the user terminal, A method of effectively reducing inter-cell interference, thereby ensuring the quality of wireless communication of a user terminal. Obviously, those skilled in the art should understand that the above modules or steps of the present invention can be implemented by a general-purpose computing device, which can be concentrated on a single computing device or distributed over a network composed of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device, such that they may be stored in the storage device by the computing device, or they may be separately fabricated into individual integrated circuit modules, or they may be Multiple modules or steps are made into a single integrated circuit module. Thus, the invention is not limited to any specific combination of hardware and software. The above is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the scope of the present invention are intended to be included within the scope of the present invention.
Claims
权 利 要 求 书 一种载波聚合的实现方法， 其特征在于， 包括： The method for implementing carrier aggregation is characterized in that it comprises:
目标基站确定对其造成干扰的第一干扰基站； The target base station determines the first interfering base station to which the interference is caused;
所述目标基站确定对用户终端造成干扰的第二干扰基站； 所述目标基站才艮据所述第一干扰基站和所述第二干扰基站确定参 考基站； Determining, by the target base station, a second interfering base station that causes interference to the user equipment; and determining, by the target base station, the reference base station according to the first interfering base station and the second interfering base station;
所述目标基站才艮据所述用户终端的能力对除所述参考基站之外的 基站的载波资源进行聚合。 根据权利要求 1所述的方法， 其特征在于， 所述目标基站确定对其造成 干扰的第一干扰基站包括： The target base station aggregates carrier resources of base stations other than the reference base station according to the capabilities of the user equipment. The method according to claim 1, wherein the determining, by the target base station, the first interfering base station causing interference to the target base station comprises:
所述目标基站测量其邻小区列表中的每个基站的干扰信号强度，并 将干扰信号强度大于预先设置的受限干扰源选择阈值的基站确定为所述 第一干扰基站。 根据权利要求 2所述的方法， 其特征在于， 所述目标基站确定所述第一 干 4尤基站之后， 所述方法还包括： The target base station measures the interference signal strength of each base station in the neighbor cell list, and determines a base station whose interference signal strength is greater than a preset interference source selection threshold, as the first interference base station. The method according to claim 2, wherein, after the target base station determines the first base station, the method further includes:
对于所述目标基站和所述第一干扰基站，其中的每两个基站进行协 商， 使得每两个基站的载波资源两两正交。 根据权利要求 1所述的方法， 其特征在于， 所述目标基站确定对用户终 端造成干扰的第二干扰基站包括： For the target base station and the first interfering base station, each of the two base stations is negotiated such that the carrier resources of each two base stations are orthogonal to each other. The method according to claim 1, wherein the determining, by the target base station, the second interfering base station causing interference to the user terminal comprises:
所述基站接收由所述用户终端上报的测量结果， 其中， 所述测量结 果包括所述目标基站的邻小区列表中的每个基站对所述用户终端的干扰 信号强度； The base station receives the measurement result reported by the user terminal, where the measurement result includes an interference signal strength of each base station in the neighbor cell list of the target base station to the user terminal;
所述目标基站将所述测量结果中干 ·ί尤信号强度大于预先设置的受 限干 4尤源选择阈值的基站确定为所述第二干扰基站。
根据权利要求 1所述的方法， 其特征在于， 所述目标基站确定所述参考 基站包括： The target base station determines, as the second interfering base station, a base station in which the signal strength of the measurement is greater than a preset restricted threshold 4 selection threshold. The method according to claim 1, wherein the determining, by the target base station, the reference base station comprises:
所述目标基站对所述第一干扰基站和所述第二干扰基站取交集，获 得所述参考基站。 根据权利要求 1所述的方法， 其特征在于， 所述目标基站根据所述用户 终端的能力对除所述参考基站之外的基站的载波资源进行聚合包括： 所述目标基站确定所述用户终端的能力； And the target base station takes an intersection of the first interfering base station and the second interfering base station to obtain the reference base station. The method according to claim 1, wherein the aggregation of the carrier resources of the base station other than the reference base station by the target base station according to the capability of the user equipment comprises: determining, by the target base station, the user terminal Ability;
所述目标基站才艮据所述用户终端的能力，确定进行聚合的基站的数 目， 和 /或进行聚合的基站中每个基站的带宽大小。 根据权利要求 1至 6中任一项所述的方法， 其特征在于， 所述用户终端 的能力包括： 用户终端的带宽能力。 一种载波聚合的实现装置， 位于基站侧， 其特征在于， 所述装置包括： 第一确定模块， 用于确定对基站造成干扰的第一干扰基站； 第二确定模块， 用于确定对用户终端造成干扰的第二干扰基站； 获取模块， 用于对所述第一干扰基站和所述第二干扰基站取交集 , 获得参考基站； The target base station determines the number of base stations to be aggregated according to the capabilities of the user equipment, and/or the bandwidth size of each base station in the base station that performs aggregation. The method according to any one of claims 1 to 6, wherein the capability of the user terminal comprises: a bandwidth capability of the user terminal. An apparatus for implementing carrier aggregation is located at a base station side, and the apparatus includes: a first determining module, configured to determine a first interfering base station that causes interference to a base station; and a second determining module, configured to determine a user terminal a second interfering base station that causes interference; an obtaining module, configured to acquire an intersection between the first interfering base station and the second interfering base station, to obtain a reference base station;
载波聚合模块 ,用于根据所述用户终端的能力对除所述参考基站之 外的基站的载波资源进行聚合。 才艮据权利要求 8所述的装置， 其特征在于， 所述第一确定模块包括： 测量子模块， 用于测量所述基站的邻小区列表中的每个基站的干扰 信号强度； And a carrier aggregation module, configured to aggregate carrier resources of the base station except the reference base station according to the capability of the user equipment. The apparatus according to claim 8, wherein the first determining module comprises: a measuring submodule, configured to measure an interference signal strength of each base station in the neighbor cell list of the base station;
第一确定子模块， 用于将干扰信号强度大于预先设置的受限干扰源 选择阈值的基站确定为所述第一干扰基站。
根据权利要求 8或 9所述的装置， 其特征在于， 所述第二确定模块包括： 接收子模块， 用于接收由所述用户终端上报的测量结果， 其中， 所 述测量结果包括所述目标基站的邻小区列表中的每个基站对所述用户终 端的干扰信号强度； And a first determining submodule, configured to determine, by the base station whose interference signal strength is greater than a preset interference source selection threshold, as the first interfering base station. The device according to claim 8 or 9, wherein the second determining module comprises: a receiving submodule, configured to receive a measurement result reported by the user terminal, where the measurement result includes the target The interference signal strength of each base station in the neighbor cell list of the base station to the user terminal;
第二确定子模块，用于将所述测量结果中干扰信号强度大于预先设 置的受限干扰源选择阈值的基站确定为所述第二干扰基站。
And a second determining submodule, configured to determine, by the base station that the interference signal strength in the measurement result is greater than a preset interference source selection threshold, as the second interfering base station.
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| CN103068050B (en) * | 2012-12-25 | 2016-12-28 | 上海无线通信研究中心 | Uplink and downlink timeslot resource allocation method based on interference perception in a kind of tdd systems |
| CN103327533B (en) * | 2013-05-20 | 2016-01-20 | 北京邮电大学 | Based on the member carrier system of selection of user's movement in a kind of carrier aggregation system |
| US10090976B2 (en) * | 2014-04-30 | 2018-10-02 | Telefonaktiebolaget Lm Ericsson (Publ) | User equipment, a network node and methods therein for enabling Device-to-Device (D2D) communication in a radio communications network |
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