WO2010088854A1 - Icic参数传输方法及资源分配方法、装置和系统 - Google Patents

Icic参数传输方法及资源分配方法、装置和系统 Download PDF

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WO2010088854A1
WO2010088854A1 PCT/CN2010/070488 CN2010070488W WO2010088854A1 WO 2010088854 A1 WO2010088854 A1 WO 2010088854A1 CN 2010070488 W CN2010070488 W CN 2010070488W WO 2010088854 A1 WO2010088854 A1 WO 2010088854A1
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carrier
cell
group
information
carrier group
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PCT/CN2010/070488
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English (en)
French (fr)
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彭莹
潘学明
胡海静
索士强
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大唐移动通信设备有限公司
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Publication of WO2010088854A1 publication Critical patent/WO2010088854A1/zh

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/20Control channels or signalling for resource management
    • H04W72/27Control channels or signalling for resource management between access points
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W16/00Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/02Resource partitioning among network components, e.g. reuse partitioning
    • H04W16/04Traffic adaptive resource partitioning
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/50Allocation or scheduling criteria for wireless resources
    • H04W72/52Allocation or scheduling criteria for wireless resources based on load
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/50Allocation or scheduling criteria for wireless resources
    • H04W72/54Allocation or scheduling criteria for wireless resources based on quality criteria
    • H04W72/541Allocation or scheduling criteria for wireless resources based on quality criteria using the level of interference

Definitions

  • ICIC parameter transmission method and resource allocation method, device and system The application is filed on February 3, 2009, the Chinese Patent Office, the application number is 200910077906.2, and the invention name is "ICIC parameter transmission method and resource allocation method, device and system" Priority of Chinese Patent Application, the entire contents of which is incorporated herein by reference.
  • TECHNICAL FIELD The present invention relates to the field of communications technologies, and in particular, to an Inter-cell Interference Co-ordination (ICIC) parameter transmission method and a carrier resource allocation method for a Long Term Evolution (LTE) multi-carrier system , devices and systems.
  • ICIC Inter-cell Interference Co-ordination
  • the high interference indication (High Interference Indication, ⁇ ) and the overload indication (Overload Indication, 01) can be respectively given based on the cell identifier (Cell ID) corresponding to the carrier. Parameters.
  • the uplink transmission of some terminals with higher capability levels will no longer be limited by single carrier, that is, the uplink transmission may occupy multiple component carriers, if the cell identifier of multiple component carriers Different, the processing mode is similar to the existing LTE standard, and if the cell identifiers are the same, each component carrier or carrier group needs to be separately instructed to implement the interaction of the ICIC parameters, and as the number of corresponding component carriers increases, It is necessary for the senior level to further plan how to properly allocate the allocation.
  • an embodiment of the present invention provides a method, a device, and a system for transmitting an inter-cell interference coordination parameter of a long-term evolution multi-carrier system, and a carrier resource allocation method, which can solve how each of the plurality of component carriers has the same cell identity.
  • the carrier indicates the problem of ⁇ and 01, implements ICIC transmission, and rationally allocates carrier resources.
  • a long-term evolution multi-carrier system inter-cell interference coordination ICIC parameter transmission method includes: Determining the load and interference status of all carriers in the source cell, or determining the load and interference status of all carrier groups in the source cell;
  • the serving cell information carries the cell identifier, the carrier or the carrier group identifier, and the ICIC parameter; the ICIC parameter is used to indicate the load or interference of the carrier or carrier group corresponding to the carrier or carrier group identifier.
  • the ICIC parameters of the condition are used to indicate the load or interference of the carrier or carrier group corresponding to the carrier or carrier group identifier.
  • the embodiment of the present invention further discloses a carrier resource allocation method in a long-term evolution multi-carrier system, including:
  • the serving cell information carries a cell identifier, a carrier or a carrier group identifier
  • An ICIC parameter is used to indicate an ICIC parameter of a load or interference condition of a carrier or a carrier group corresponding to the carrier or carrier group identifier;
  • Other carriers than the corresponding carrier are examples of carriers.
  • the embodiment of the present invention further provides a long-term evolution multi-carrier system inter-cell interference coordination ICIC parameter transmission device, including:
  • a carrier status determining unit configured to determine load and interference status of all carriers or carrier groups in the source cell
  • a serving cell information sending unit configured to send serving cell information to each neighboring cell, where the serving cell information carries a cell identifier, a carrier or a carrier group identifier, and a load or a dry carrier or a carrier group corresponding to the carrier or carrier group identifier ⁇
  • the embodiment of the invention also discloses a carrier resource allocation device in a long-term evolution multi-carrier system, including:
  • a serving cell information receiving unit configured to receive serving cell information, where the serving cell information carries a cell identifier, a carrier or a carrier group identifier, and an ICIC parameter indicating a load and an interference condition of a carrier or a carrier group corresponding to the carrier or carrier group identifier ;
  • a carrier determining unit configured to determine a corresponding carrier or a carrier group in the local cell when the ICIC parameter indicates that the carrier or the carrier group is too large or the load is too heavy;
  • the carrier allocation unit preferentially allocates the carrier in the cell when the carrier resource is allocated to the cell edge terminal Other carriers than the corresponding carrier.
  • the embodiment of the present invention further provides a communication system, including a terminal and a base station, where the base station has an interference coordination ICIC parameter transmission device, where the ICIC parameter transmission device is configured to: determine a load of all carriers or carrier groups in the source cell. And the interference condition, and sending the serving cell information to the neighboring cells of the source cell, where the serving cell information carries the cell identifier, the carrier or the carrier group identifier, and the load and the carrier group of the carrier or the carrier group corresponding to the carrier or carrier group identifier.
  • the embodiment of the present invention further provides another communication system, including a terminal and a base station, where the base station has a carrier resource allocation device, where the carrier resource allocation device is configured to: receive serving cell information, where the serving cell information carries a cell identifier And a carrier or carrier group identifier, and an ICIC parameter indicating a load or a carrier condition of the carrier or carrier group corresponding to the carrier or carrier group identifier; and
  • the other carriers except the corresponding carriers in the local cell are preferentially allocated.
  • the embodiment of the present invention clarifies a method for transmitting 01 and ⁇ parameters in a long-term evolution multi-carrier system
  • an embodiment of the present invention clarifies a method for transmitting ICIC parameters in a long-term evolution multi-carrier system.
  • the component carriers or carrier groups having the same cell identifier can be distinguished by assigning different identifiers (such as numbering) to the component carriers or carrier groups, so that the ICIC parameters between the source cell and the target cell can be successfully transmitted.
  • the target cell is thus able to understand the load or interference conditions of each carrier or carrier group, thereby enabling reasonable allocation of carrier resources.
  • FIG. 1 is a schematic diagram of a neighboring cell of the prior art transmitting 01 and ⁇ through an X2 interface
  • FIG. 2 is a flowchart of a method for transmitting inter-cell interference coordination parameters in a long-term evolution multi-carrier system according to an embodiment of the present invention
  • FIG. 3 is a schematic diagram of transmitting ICIC parameters when the carrier or carrier group numbers of the source cell and the target cell are the same and the number of carriers or carrier groups are equal in the embodiment of the present invention
  • FIG. 4 is a schematic diagram of transmitting ICIC parameters in a carrier or a carrier group according to a source cell when the number of carriers of the source cell is greater than the number of carriers in the neighboring cell according to an embodiment of the present invention
  • FIG. 5 is a schematic diagram of transmitting ICIC parameters in a carrier or a carrier group according to a target cell when the number of carriers of the source cell is greater than the number of carriers in the neighboring cell according to an embodiment of the present invention
  • FIG. 6 is a schematic diagram of transmitting ICIC parameters when the number of carriers of a source cell is smaller than the number of carriers of a neighboring cell according to an embodiment of the present invention
  • FIG. 7 is a schematic diagram of transmitting ICIC parameters according to a corresponding relationship between a source cell and a carrier number of the same carrier in the current cell according to an embodiment of the present invention
  • FIG. 8 is a schematic diagram of transmitting ICIC parameters when the carrier numbers of the same carrier are different in the source cell and the neighboring cell, and there is no higher layer notification or neighbor cell broadcast information in the embodiment of the present invention
  • FIG. 9 is a schematic diagram of transmitting ICIC parameters at the same time in the same carrier group of the same carrier group in the source cell and the neighboring cell according to an embodiment of the present invention.
  • FIG. 10 is a flowchart of a carrier resource allocation method in a long-term evolution multi-carrier system according to an embodiment of the present invention.
  • FIG. 11 is a schematic structural diagram of an ICIC parameter transmission apparatus in a long-term evolution multi-carrier system according to an embodiment of the present invention.
  • FIG. 12 is a schematic structural diagram of a carrier resource allocation apparatus in a long-term evolution multi-carrier system according to an embodiment of the present invention.
  • OFDM Orthogonal Frequency Division Multiplexing
  • SC-OFDM Single Carrier-Orthogonal Frequency Division Multiplexing
  • CDMA Code Division Multiple
  • ICIC is mainly realized through resource limitation, and is mainly divided into frequency resource limitation and power resource limitation.
  • ⁇ and 01 two parameters, ⁇ and 01, need to be transmitted to the target cell through the X2 interface (as shown in FIG. 1), and ⁇ is required in the downlink ICIC mode; ⁇ and 01 are each PRB.
  • the physical resource block is given as the granularity.
  • the purpose of transmitting the two parameters is to notify the neighboring cell of the PRB identifier that the local cell interferes with the neighboring cell in advance, so that the neighboring cell can avoid the
  • the PRB is used by the UE at the cell edge to improve the SINR (Signal to Interference plus Noise Ratio) of the cell edge UE, and improve the cell edge user throughput.
  • the purpose of transmitting 01 in the uplink is to make the target cell aware that the service cell has excessive interference, that is, when the PRB interference of the service cell is too strong, the PRB is represented as being overloaded, and then passed.
  • the X2 interface is delivered to the target cell. Therefore, the target cell can learn that the PRB interference of the service cell is too heavy, and can further perform corresponding operations, for example, reducing the power of the corresponding PRB of the cell or stopping using the PRB.
  • the purpose of transmitting the ⁇ parameter is to prevent the excessive interference caused by the PRB allocation conflict between the serving cell and the target cell in advance, that is, when the serving cell and the target cell find that the use of certain PRBs in the current cell will cause higher interference to other cells.
  • the corresponding ⁇ is sent to the other cell through the X2 interface, so that the cell receiving the parameter can avoid the PRB that may cause high interference to the local cell (that is, the cell that receives the parameter) in advance.
  • a PRB that may cause high interference is allocated to a UE inside the cell.
  • the 01 and HII parameters are given corresponding to the cell identity, as described in 36.423.9.1.2.1.
  • the system carrier is an aggregation of multiple component carriers (continuous or non-contiguous).
  • the prior art does not give a clear and definable ICIC interaction mode.
  • the embodiment of the present invention provides a specific and feasible LTE multi-carrier system.
  • the ICIC interaction scheme complements the existing technology with effective functions.
  • the embodiment of the invention discloses a method for transmitting inter-cell interference coordination parameters (01 and HII) in a long-term evolution multi-carrier system.
  • the method is different in specific ways for the case where the cell identifiers of multiple component carriers in the cell are the same.
  • the work is completed by the eNB, and the working process is as shown in FIG. 2, including the following steps:
  • Step S21 Determine a load status and an interference status of all carriers in a cell where the UE is located (referred to as a “source cell”).
  • Step S22 Send the serving cell information to each neighboring cell, where the serving cell information carries the cell identifier, the carrier identifier, and the ICIC parameter, where the ICICI parameter includes at least 01 and ⁇ , that is, the load status and interference of the carrier corresponding to the carrier identifier. Information about the situation.
  • the carrier identifier may be a carrier number, and the carrier numbers of carriers in the source cell (serving cell) and the neighboring cell (target cell) are arranged in descending order of the central frequency point or from high to low, in the source cell and the neighboring cell.
  • the carrier numbers of the same carrier are also the same.
  • the method for transmitting the serving cell information may be: for each neighboring cell (target cell), the serving cell information is sent one by one corresponding to each component carrier, as shown in FIG. 3, where 0, 1 and 4 are carriers.
  • the identifier corresponds to the target cell 1, the target cell 2 or the target cell 3, and the carrier conditions of the component carriers 0, 1, and 4 are transmitted one by one.
  • the method of transmitting the serving cell information may be performed in the foregoing step S22.
  • the first method is to send the serving cell information one by one according to each component carrier in the source cell, as shown in FIG.
  • the other is that the serving cell information is sent one by one only for the existing carriers of the neighboring cell, as shown in FIG. 5.
  • the neighboring cell can ignore the received cell information.
  • the serving cell information is sent one by one according to each component carrier in the source cell, that is, the ICIC parameters of the component carriers that do not correspond to the source cell in the neighboring cell are to be Ignore, as in Figure 6, carrier 5 in target cell 1.
  • the carrier numbers of the same carrier in the source cell and the neighboring cell may also be different.
  • the neighboring cell may determine the same carrier in the source cell and the local cell according to the previously obtained information.
  • Corresponding relationship between carrier numbers as shown in FIG. 7, carrier 0, carrier 2, and carrier 4 in the source cell respectively correspond to carrier 2, carrier 0, and carrier 1 in the neighboring cell.
  • the pre-obtained information includes: at least one of configuration information sent by the neighboring cell through the X2 interface, parameters in the operation and maintenance process, neighbor cell broadcast information reported by the UE, or a high layer notification reported by the UE.
  • all the carriers of the neighboring cell can be scanned corresponding to the component carriers of the source cell, as shown in FIG. 01 and ⁇ of carriers that do not correspond to each other have little or no effect (if the bands are not completely adjacent).
  • the source cell and the target cell may also be configured as a carrier group, where the carrier group includes multiple carriers.
  • the identifiers of the same carrier group are the same.
  • the identifier of the carrier group is a carrier.
  • the group number, the serving cell information sent to each neighboring cell carries the cell identifier, the carrier group number, and the ICIC parameter, and is similar to the foregoing embodiment.
  • FIG. 9 shows a specific example, where carrier 0, carrier 1 and carrier 2 of the source cell form carrier group 1, carrier 3 and carrier 4 form carrier group 2, and the transmission mode of monthly service cell information is for each carrier of the source cell.
  • the groups are sent one by one.
  • the range of the carrier or carrier group is from 1 to the maximum number of carriers or carriers, which is also the range of carrier numbers carried in the serving cell information, in the base station to base station interface (X2) protocol.
  • Part of the specific information of the service cell information can be as follows:
  • 9.2.13, ECGI 9.2.14, 9.2.17a refer to the protocol standard (the specific content can refer to the relevant documents, this article does not describe it in detail), M refers to the mandatory option, 0 refers to the optional item.
  • the source cell and the target cell member carrier number need to be added to the serving cell information.
  • the specific process may be: the serving cell information number ranges from 1 to the largest number of cells in the eNB. For each cell identifier, the cell identifier of the source cell is used as the source carrier number ranging from 1 to the largest carrier or carrier group. number.
  • the base station to base station interface (X2) protocol part of the specific content of the serving cell information (other parts are the same as the prior art) can be as follows:
  • the embodiment of the present invention clarifies a method for transmitting 01 and ⁇ parameters in a long-term evolution multi-carrier system.
  • different identifiers such as numbers
  • the way of distinguishing is such that the 01 and HII parameters between the source cell and the target cell can be successfully transmitted.
  • the embodiment of the present invention further provides a carrier resource allocation method in the long-term evolution multi-carrier system, and the specific process is shown in FIG. 10 . Includes the following steps:
  • Step S101 Receive serving cell information from a neighboring cell, where the serving cell information carries a cell identifier, a carrier or carrier group identifier, and ICIC parameters (01 and ⁇ ).
  • Step S102 Determine, when the ICIC parameter indicates that the carrier or the carrier group has a large interference or a heavy load, determine a corresponding carrier or a carrier group in the local cell.
  • Step S103 When allocating carrier resources to the cell edge terminal, preferentially assigning the foregoing in the local cell Other carriers than the corresponding carrier.
  • the carrier resources that may cause high interference or heavy load are avoided when allocating carrier resources to the cell edge terminal, the signal to noise ratio and throughput of the cell edge cell can be improved.
  • the carrier or carrier group identifier in this embodiment may be a carrier or carrier group number.
  • each carrier or carrier group can be distinguished by the number of the carrier or carrier group.
  • the embodiment of the present invention further provides a long-term evolution multi-carrier system inter-cell interference coordination ICIC parameter transmission device, and its structure is as shown in FIG. 11, including: a carrier status determining unit 111 and a service cell information transmitting unit 112;
  • the carrier status determining unit 111 is configured to determine load and interference status of all carriers or carrier groups in the source cell.
  • the serving cell information sending unit 112 is configured to send serving cell information to each neighboring cell, where the serving cell information carries the cell identifier and the carrier. Or a carrier group identifier and an ICIC parameter indicating a load or a carrier condition of the carrier or carrier group corresponding to the carrier or carrier group identifier.
  • the carrier identifier is a carrier or a carrier group number, and the numbering manner of the carrier or the carrier group of the source cell and the target cell may be the same.
  • the specific manner in which the serving cell information sending unit 112 sends the serving cell information to each neighboring cell is: Each cell has a carrier or carrier group, and sends serving cell information. Certainly, the numbering manner of the carrier or the carrier group of the source cell and the target cell may be different, and the serving cell information sending unit 112 sends the serving cell information to each neighboring cell in a specific manner: determining the neighbor by using the previously obtained information.
  • the cell has a carrier or a carrier group, and the serving cell information is sent for each existing carrier or carrier group.
  • the pre-obtained information includes: configuration information sent by the neighboring cell through the ⁇ 2 interface, parameters in the operation and maintenance process, and neighbors reported by the UE. At least one of cell broadcast information or a high layer notification reported by the UE.
  • the embodiment of the present invention further provides a carrier resource allocation device in a long-term evolution multi-carrier system, and the structure thereof is as shown in FIG. 12, including: a serving cell information receiving unit 121, Carrier determining unit 122 and carrier allocating unit 123; wherein:
  • the serving cell information receiving unit 121 is configured to receive serving cell information from the source cell, where the serving cell information carries a cell identifier, a carrier or a carrier group identifier, and a load and a carrier group corresponding to the carrier or carrier group identifier corresponding to the carrier or carrier group identifier.
  • the carrier determining unit 122 is configured to determine a corresponding carrier or a carrier group in the local cell when the ICIC parameter indicates that the carrier or carrier group interference is large or the load is too heavy.
  • the carrier allocation unit 123 when allocating carrier resources to the cell edge terminal, preferentially allocates other carriers than the corresponding carriers in the local cell.
  • the carrier identifier is a carrier or a carrier group number, and the numbering manner of the carrier or the carrier group of the source cell and the target cell may be the same, and the number of each carrier in the current cell and the source cell is from low to high according to the central frequency point. Or arranging from high to low, the carrier determining unit 122 determines the corresponding carrier or carrier group in the local cell in a specific manner: determining a carrier or carrier in the cell where the carrier number is the same as the carrier or carrier group number in the serving cell information.
  • the numbering of the carrier or the carrier group of the source cell and the target cell may be different, but has a corresponding relationship, and is used to indicate that the information of the corresponding relationship is carried in the configuration information and operation and maintenance sent by the neighboring cell through the ⁇ 2 interface. At least one of a parameter in the process, a neighbor cell broadcast message reported by the UE, or a high layer notification reported by the UE.
  • the embodiment of the present invention further provides a communication system, including a terminal and a base station, where the base station has an interference coordination ICIC parameter transmission device, where the ICIC parameter transmission device is configured to: determine load and interference status of all carriers or carrier groups in the source cell. And transmitting, to the neighboring cells of the source cell, the serving cell information, where the serving cell information carries the cell identifier, the carrier or the carrier group identifier, and the load and interference status of the carrier or carrier group corresponding to the carrier or carrier group identifier.
  • ICIC parameters Specifically, the structure and composition of the ICIC parameter transmission apparatus can refer to the content of the ICIC parameter transmission apparatus of the foregoing long term evolution multi-carrier system inter-cell interference coordination and FIG.
  • the embodiment of the present invention further provides another communication system, including a terminal and a base station, where the base station has a carrier resource allocation device, where the carrier resource allocation device is configured to: receive serving cell information from a source cell, where the serving cell information carries a cell Identification, carrier or carrier group identification, and indicating the carrier or The carrier group identifies the ICIC parameter of the load and interference status of the corresponding carrier or carrier group; and, when the ICIC parameter indicates that the carrier or carrier group has large interference or overload, determine the corresponding carrier or carrier group in the local cell. And, when allocating carrier resource allocation to the cell edge terminal, preferentially allocating other carriers than the corresponding carrier in the local cell.
  • information, messages, and signals can be represented using any of a number of different processes and techniques.
  • the messages and information mentioned in the above description may be expressed as voltage, current, electromagnetic wave, magnetic field or magnetic particle, light field or any combination of the above.
  • the steps of a method or algorithm described in connection with the embodiments disclosed herein may be implemented directly in hardware, a software module executed by a processor, or a combination of both.
  • the software module can be placed in random access memory (RAM), memory, read only memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, removable disk, CD-ROM, or technical field. Any other form of storage medium known.

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Description

ICIC参数传输方法及资源分配方法、 装置和系统 本申请要求于 2009 年 2 月 3 日提交中国专利局、 申请号为 200910077906.2, 发明名称为 "ICIC 参数传输方法及资源分配方法、 装置和 系统"的中国专利申请的优先权, 其全部内容通过引用结合在本申请中。 技术领域 本发明涉及通信技术领域, 更具体地说, 涉及一种长期演进(LTE )多载 波系统小区间干扰 1办调 ( Inter-cell Interference Co-ordination, ICIC )参数传输 方法及载波资源分配方法、 装置和系统。
背景技术 在 LTE系统中, 由于上行传输是单载波, 因而可以基于载波对应的小区标 识( Cell ID )来分别给出高干扰指示( High Interference Indication, ΗΠ )和过 载指示( Overload Indication, 01 )两个参数。 但是对于长期演进多载波系统来 说, 某些具有较高能力能级的终端, 其上行传输将不再受单载波限制, 即上行 传输可能占用多个成员载波,如果多个成员载波的小区标识不同, 则处理方式 与现有 LTE标准相类似, 而如果小区标识相同, 则需要对每个成员载波或者载 波组分别进行指示以实现 ICIC参数的交互, 并且, 随着对应成员载波数量的增 多, 需要高层进一步规划如何合理对应分配。
发明内容 有鉴于此,本发明实施例提供一种长期演进多载波系统小区间干扰协调参 数传输方法及载波资源分配方法、装置和系统, 可以解决多个成员载波的小区 标识相同时如何对每个载波指示 ΗΠ和 01的问题, 实现 ICIC传输, 并对载波资 源进行合理分配。
一种长期演进多载波系统小区间干扰协调 ICIC参数传输方法, 包括: 确定源小区中所有载波的负载和干扰状况,或确定源小区中所有载波组的 负载和干扰状况;
向各邻小区发送服务小区信息, 该服务小区信息携带小区标识、载波或载 波组标识及 ICIC参数;所述 ICIC参数用以指示所述载波或载波组标识对应的 载波或载波组的负载或干扰状况的 ICIC参数。
同时, 本发明实施例还公开一种长期演进多载波系统中载波资源分配方 法, 包括:
接收服务小区信息, 该服务小区信息携带小区标识、载波或载波组标识及
ICIC参数; 所述 ICIC参数用以指示所述载波或载波组标识对应的载波或载波 组的负载和干扰状况的 ICIC参数;
当所述 ICIC参数指示该载波或载波组干护 u较大或负载过重时, 确定本小 区中的相应载波或载波组, 并在对小区边缘终端分配载波资源时,优先分配本 小区中所述相应载波之外的其他载波。
本发明实施例同时还提供一种长期演进多载波系统小区间干扰协调 ICIC 参数传输装置, 包括:
载波状况确定单元,用于确定源小区中所有载波或载波组的负载和干扰状 况;
服务小区信息发送单元, 用于向各邻小区发送服务小区信息, 该服务小区 信息携带小区标识、载波或载波组标识、及指示所述载波或载波组标识对应的 载波或载波组的负载或干 ·ί尤状况的 ICIC参数。
本发明实施例同时还公开了一种长期演进多载波系统中载波资源分配装 置, 包括:
服务小区信息接收单元, 用于接收服务小区信息, 该服务小区信息携带小 区标识、载波或载波组标识、 以及指示所述载波或载波组标识对应的载波或载 波组的负载和干扰状况的 ICIC参数;
载波确定单元, 用于当所述 ICIC参数指示该载波或载波组干护 u较大或负 载过重时, 确定本小区中的相应载波或载波组;
载波分配单元,在对小区边缘终端分配载波资源时,优先分配本小区中所 述相应载波之外的其他载波。
此外, 本发明实施例还提供了一种通信系统, 包括终端和基站, 所述基站 具有干扰协调 ICIC参数传输装置, 所述 ICIC参数传输装置用于: 确定源小区 中所有载波或载波组的负载和干扰状况,并向所述源小区的各邻小区发送服务 小区信息, 该服务小区信息携带小区标识、载波或载波组标识及指示所述载波 或载波组标识对应的载波或载波组的负载和干 ·ί尤状况的 ICIC参数。
此外, 本发明实施例还提供了另一种通信系统, 包括终端和基站, 所述基 站具有载波资源分配装置, 所述载波资源分配装置用于: 接收服务小区信息, 该服务小区信息携带小区标识、载波或载波组标识、 以及指示所述载波或载波 组标识对应的载波或载波组的负载和干 ·ί尤状况的 ICIC参数; 并且,
当所述 ICIC参数指示该载波或载波组干护 u较大或负载过重时, 确定本小 区中的相应载波或载波组; 以及,
并在对小区边缘终端分配载波资源时,优先分配本小区中所述相应载波之 外的其他载波。
从上述的技术方案可以看出,本发明实施例明确了在长期演进多载波系统 中, 01和 ΗΠ参数的传输方法, 本发明实施例明确了长期演进多载波系统中, ICIC 参数的传输方法, 能够通过对各成员载波或载波组赋予不同标识(如编 号)的方式对小区标识相同的多个成员载波或载波组予以区分,从而使得源小 区和目标小区之间的 ICIC参数能够被顺利传输, 目标小区也因此能够了解各 载波或载波组的负载或干扰状况, 从而能够对载波资源进行合理分配。
附图说明 为了更清楚地说明本发明实施例或现有技术中的技术方案,下面将对实施 例或现有技术描述中所需要使用的附图作简单地介绍,显而易见地, 下面描述 中的附图仅仅是本发明的一些实施例, 对于本领域普通技术人员来讲, 在不付 出创造性劳动性的前提下, 还可以根据这些附图获得其他的附图。
图 1为现有技术相邻小区通过 X2接口传输 01和 ΗΠ的示意图; 图 2 为本发明实施例提供的一种长期演进多载波系统小区间干扰协调参 数传输方法的流程图;
图 3为本发明实施例中,当源小区和目标小区的载波或载波组编号相同且 载波或载波组数量相等时, 传输 ICIC参数的示意图;
图 4为本发明实施例中, 当源小区的载波数量大于邻小区的载波数量时, 按照源小区在载波或载波组传输 ICIC参数的示意图;
图 5为本发明实施例中, 当源小区的载波数量大于邻小区的载波数量时, 按照目标小区在载波或载波组传输 ICIC参数的示意图;
图 6为本发明实施例中, 当源小区的载波数量小于邻小区的载波数量时, 传输 ICIC参数的示意图;
图 7为本发明实施例中,根据源小区和本小区中相同载波的载波编号的对 应关系传输 ICIC参数的示意图;
图 8为本发明实施例中,在源小区和邻小区中相同载波的载波编号方式不 同, 且没有高层通知或邻小区广播信息时, 传输 ICIC参数的示意图;
图 9为本发明实施例中,源小区和邻小区中相同载波组的载波编号方式相 同时, 传输 ICIC参数的示意图;
图 10为本发明实施例提供的一种长期演进多载波系统中载波资源分配方 法的流程图;
图 11为本发明实施例提供的一种长期演进多载波系统中 ICIC参数传输装 置的结构示意图;
图 12为本发明实施例提供的一种长期演进多载波系统中载波资源分配装 置的结构示意图。 具体实施方式 对于目前 LTE 来说, 因为下行为正交频分复用 (Orthogonal Frequency Division Multiplexing , OFDM)方式, 上行为单载波正交频分复用 ( Single Carrier-Orthogonal Frequency Division Multiplexing, SC-OFDM ), 所以小区间 干扰即为主要的干扰。 同时, 与码分多址( Code Division Multiple , CDMA ) 系统使用软容量来实现同频组网不同, LTE无法直接实现同频组网, 因此如何 降低小区间干扰以实现同频组网即成为 LTE —个主要问题。 现有技术有多种 方法可以消除小区间的干扰: 例如, 发射端波束赋形以及干扰拒绝合并 ( Interference Rejection Combining, IRC )、 ICIC、 功率控制和比特级加扰等。
其中: ICIC 主要是通过对资源限制来实现的, 并主要分频率资源限制和 功率资源限制。 目前 LTE中已经确定在上行的 ICIC方式中需要通过 X2接口 向目标小区传输 ΗΠ和 01两个参数(如图 1所示), 在下行 ICIC方式中需要 传输 ΗΠ; ΗΠ和 01是以每个 PRB (物理资源块 )作为颗粒度来给出的, 传输 这两个参数的目的是提前将本小区对邻小区造成干扰的 PRB 标识通知邻小 区,使得所述邻小区收到该参数后可避免尽量对处于小区边缘的 UE使用所述 PRB ,以达到提高小区边缘 UE的 SINR( Signal to Interference plus Noise Ratio, 信号与干扰加噪声比) 的目的, 提高小区边缘用户吞吐量。
具体而言, 在上行链路中传输 01的目的是为了使目标小区了解业务小区 已经发生干扰过大的问题, 即当业务小区的 PRB干扰过强时将该 PRB表示为 负载过重, 然后通过 X2接口传递到目标小区。 由此, 目标小区即可了解到业 务小区 PRB干扰过重情况, 并可进一步进行相应操作, 例如对本小区相应的 PRB减少功率或停止使用所述 PRB。 而传输 ΗΠ参数的目的是为了提前防止 由于业务小区和目标小区 PRB分配冲突而引起的干扰过大问题, 即: 当业务 小区和目标小区发现本小区使用某些 PRB会对其他小区造成较高的干扰时, 将相应的 ΗΠ通过 X2接口发送至该所述其他小区, 由此使得收到该参数的小 区可提前避开有可能对本小区 (即接收到该参数的小区)造成高干扰的 PRB, 或者, 把有可能造成高干扰的 PRB分配给小区内部的 UE。
LTE标准中, 在服务小区信息中, 对应于小区标识, 01和 HII参数被给 出, 具体参见 36.423.9.1.2.1。
但是, 在 LTE多载波系统中, 系统载波是多个成员载波(连续或者非连 续) 的聚合, 这种情况下, 现有技术并没有给出明确的、 确切可行的 ICIC交 互方式。
基于该情况, 本发明实施例提供一种具体、 可行的针对 LTE多载波系统 的 ICIC交互方案, 对现有技术作有效的功能补充。
下面将结合本发明实施例中的附图,对本发明实施例中的技术方案进行清 楚、 完整地描述, 显然, 所描述的实施例仅仅是本发明一部分实施例, 而不是 全部的实施例。基于本发明中的实施例, 本领域普通技术人员在没有作出创造 性劳动前提下所获得的所有其他实施例, 都属于本发明保护的范围。
本发明实施例公开了一种长期演进多载波系统小区间干扰协调参数 ( 01 和 HII )传输方法, 针对小区中多个成员载波的小区标识相同的情况, 本方法 通过特定的方式予以区分, 具体工作由 eNB完成, 工作过程如图 2所示, 包 括以下步骤:
步骤 S21、 确定 UE所在小区 (简称 "源小区" ) 中所有载波的负载状况 和干扰状况。
步骤 S22、向各邻小区发送服务小区信息,该服务小区信息携带小区标识、 载波标识及 ICIC参数, 所述 ICICI参数至少包括 01和 ΗΠ, 即指示所述载波 标识对应的载波的负载状况和干扰状况的信息。
所述载波标识可以是载波编号, 源小区(服务小区)和邻小区(目标小区) 中载波的载波编号按照中心频点从低到高或者从高到低的顺序排列,源小区和 邻小区中相同载波的载波编号也相同。上述步骤 S22中,发送服务小区信息的 方式可以是: 针对每个邻小区 (目标小区), 对应每个成员载波逐一发送服务 小区信息, 如图 3所示, 其中, 0, 1 , 4为载波标识, 对应目标小区 1、 目标小区 2或目标小区 3 , 将成员载波 0 , 1 , 4的载波状况逐一发送。
如果源小区和邻小区中载波数量不同,如源小区的载波数量大于邻小区的 载波数量, 或者源小区的载波数量小于邻小区的载波数量。 当源小区的载波数 量大于邻小区的载波数量时,上述步骤 S22中,发送服务小区信息的方式可以 有两种,一种是按照源小区中各成员载波逐一发送服务小区信息,如图 4所示; 另一种是仅针对邻小区已有的载波逐一发送服务小区信息,如图 5所示。对于 前一种方式而言, 邻小区可以忽略其接收到的服务小区信息。 而当源小区的载 波数量小于邻小区的载波数量时,则按照源小区中各成员载波逐一发送服务小 区信息, 也就是说, 邻小区中与源小区中不对应的成员载波的 ICIC参数将被 忽略, 如图 6中目标小区 1中的载波 5。
需要说明的是, 源小区和邻小区中相同载波的载波编号也可以是不同的, 此时,邻小区在接收到服务小区信息后, 可以根据预先获得的信息确定源小区 和本小区中相同载波的载波编号的对应关系,如图 7所示,源小区中的载波 0、 载波 2和载波 4分别对应邻小区中的载波 2、 载波 0和载波 1。 所述预先获得 的信息包括: 邻小区通过 X2接口发送的配置信息、 操作维护过程中的参数、 UE上报的邻小区广播信息或 UE上报的高层通知中的至少一种。
此外,在源小区和邻小区中相同载波的载波编号方式不同,且没有高层通 知或邻小区广播信息时, 可以对应源小区的成员载波扫描邻小区的所有载波, 如图 8所示, 实际上, 不相互对应的载波的 01和 ΗΠ很小或者根本没有影响 (如果频段完全不相邻的话)。
此外, 源小区和目标小区还可以做载波组的对应, 所述载波组包含多个载 波, 在源小区和目标小区中, 相同载波组的标识相同, 本实施例中, 载波组的 标识为载波组编号, 向各邻小区发送的服务小区信息携带小区标识、载波组编 号及 ICIC参数, 方式与上述实施例相类似。 图 9示出了一种具体例子, 源小 区的载波 0、 载波 1和载波 2组成载波组 1 , 载波 3、 载波 4组成载波组 2 , 月良 务小区信息的发送方式针对源小区的各载波组逐一发送。
上述各实施例中,载波或载波组的编号的范围是从 1到最大的载波或载波 个数, 这也是服务小区信息中携带的载波编号的范围, 在基站到基站的接口 ( X2 )协议中, 服务小区信息的一部分具体内容(其他部分与现有技术相同) 可以 ¾口下表所示:
表 1
IE/Group Name Presence Range IE type Semantics Criticality Assigned and description Criticality reference
Message Type M 9.2.13 YES ignore
Cell Information M YES ignore
> Cell Information 1 to EACH ignore Item maxCelline
NB
»Cell ID M ECGI Id of the 9.2.14 source cell
»Source 0 to
Component Carrier maxCompo
Item nentCarrier
»> Source 0 9.2.17a The
Component Carrier number of
number (源小区成 source
员载波编号) Component
carrer
»>UL Interference 0 9.2.17
Overload Indication
> »UL High 0 to
Interference maxCelline
Information NB O> •
»»UL High M 9.2.18
Interference
Indication
»»Target Cell ID M Id of the
cell for
which the
HII is
meant
»»>Target 0 9.2.18a The
Component carrier number of
number (目标小区 target
成员载波编号) Component
carrier
其中, 9.2.13、 ECGI 9.2.14、 9.2.17a 指的是协议标准(具体内容可 参照相关文档, 本文不对其进行详细描述), M指的是必选项, 0指的是可选 项。
如果在长期演进多载波系统中, 01和 ΗΠ参数在未来需求中需要源小区 和目标小区一一对应,则需要在服务小区信息中添加源小区和目标小区成员载 波编号。 具体过程可以是: 服务小区信息编号范围从 1到 eNB中最大的小区 个数,对于每个小区标识, 再以这个小区标识作为源小区的载波的编号范围从 1到最大的载波或载波组个数。 在基站到基站的接口 (X2 )协议中, 服务小区 信息的一部分具体内容(其他部分与现有技术相同) 可以如下表所示:
表 2
IE/Group Name Presence Range IE type Semantics Criticality Assigned and descriptio Criticality reference n
Message Type M 9.2.13 YES ignore
Cell Information M YES ignore
> Cell Information 1 to EACH ignore Item maxCellineN
B
»Cell ID M Id of the
source
cell
»Source 0 to
Component Carrier maxSourceC
Item omponentCa
rrier
»>Source 0 9.2.17a
Component Carrier
number
»Target Component 0 to
carrier Item maxSourceC
omponentCa
rrier
»>Target 0 9.2.18a
Component carrier
number
本发明实施例明确了在长期演进多载波系统中, 01和 ΗΠ参数的传输方 法,针对小区标识相同的多个成员载波或载波组, 可以通过对各成员载波或载 波组赋予不同标识(如编号)的方式进行区分, 使得源小区和目标小区之间的 01和 HII参数能够被顺利传输。
此外, 针对上述长期演进多载波系统小区间干扰协调参数( 01和 ΗΠ )传 输方法, 本发明实施例还提供了一种长期演进多载波系统中载波资源分配方 法, 具体过程如图 10所示, 包括以下步骤:
步骤 S101、 接收来自邻小区的服务小区信息, 该服务小区信息携带小区 标识、 载波或载波组标识和 ICIC参数 ( 01和 ΗΠ )。
步骤 S102、当所述 ICIC参数指示该载波或载波组干扰较大或负载过重时, 确定本小区中的相应载波或载波组。
步骤 S103、 在对小区边缘终端分配载波资源时, 优先分配本小区中所述 相应载波之外的其他载波。
由于在对小区边缘终端分配载波资源时,避开可能导致高干扰或者负载较 重的载波资源, 因此, 可以提高小区边缘小区的信噪比和吞吐量。
本实施例中的载波或载波组标识可以是载波或载波组编号。
对于小区标识相同的多个成员载波或载波组来说,通过载波或载波组的编 号即可区分每个载波或载波组。
所述服务小区信息的具体形式及相关内容可参照前文小区间干扰协调参 数传输方法的内容, 在此不再赘述。
此外, 本发明实施例还提供了长期演进多载波系统小区间干扰协调 ICIC 参数传输装置, 其结构如图 11所示, 包括: 载波状况确定单元 111和服务小 区信息发送单元 112;
载波状况确定单元 111 , 用于确定源小区中所有载波或载波组的负载和干 扰状况; 服务小区信息发送单元 112, 用于向各邻小区发送服务小区信息, 该 服务小区信息携带小区标识、载波或载波组标识及指示所述载波或载波组标识 对应的载波或载波组的负载或干 ·ί尤状况的 ICIC参数。
所述载波标识为载波或载波组编号,所述源小区和目标小区的载波或载波 组的编号方式可以是一样,服务小区信息发送单元 112向各邻小区发送服务小 区信息具体方式为: 针对源小区各已有载波或载波组, 发送服务小区信息。 当 然, 所述源小区和目标小区的载波或载波组的编号方式也可以是不同的,服务 小区信息发送单元 112向各邻小区发送服务小区信息具体方式为:利用预先获 得的信息确定所述邻小区已有载波或载波组,针对各已有载波或载波组发送服 务小区信息,所述预先获得的信息包括:邻小区通过 Χ2接口发送的配置信息、 操作维护过程中的参数、 UE上报的邻小区广播信息或 UE上报的高层通知中 的至少一种。
所述服务小区信息的具体形式可以参照前文 ICIC参数传输方法部分的内 容, 在此不再赘述。
在上述实施例的基础上,本发明实施例还提供一种长期演进多载波系统中 载波资源分配装置, 其结构如图 12所示, 包括: 服务小区信息接收单元 121、 载波确定单元 122和载波分配单元 123 ; 其中:
服务小区信息接收单元 121 , 用于接收来自源小区的服务小区信息, 该服 务小区信息携带小区标识、载波或载波组标识、 以及指示所述载波或载波组标 识对应的载波或载波组的负载和干 ·ί尤状况的 ICIC参数。
载波确定单元 122, 用于当所述 ICIC参数指示该载波或载波组干扰较大 或负载过重时, 确定本小区中的相应载波或载波组。
载波分配单元 123 , 在对小区边缘终端分配载波资源时, 优先分配本小区 中所述相应载波之外的其他载波。
所述载波标识为载波或载波组编号,所述源小区和目标小区的载波或载波 组的编号方式可以是一样,所述本小区和源小区中各载波的编号按照中心频点 从低到高或者从高到低进行排列,载波确定单元 122确定本小区中的相应载波 或载波组具体方式为:确定本小区中载波编号与所述服务小区信息中的载波或 载波组编号相同的载波或载波组;所述源小区和目标小区的载波或载波组的编 号方式可以是不一样,但具有对应关系, 用于指示所述对应关系的信息承载于 邻小区通过 Χ2接口发送的配置信息、 操作维护过程中的参数、 UE上报的邻 小区广播信息或 UE上报的高层通知中的至少一种。
所述服务小区信息的具体形式及相关内容可以参照前文 ICIC参数传输方 法部分的内容, 在此不再赘述。
本发明实施例还提供一种通信系统, 包括终端和基站, 所述基站具有干扰 协调 ICIC参数传输装置, 所述 ICIC参数传输装置用于: 确定源小区中所有载 波或载波组的负载和干扰状况, 并向所述源小区的各邻小区发送服务小区信 息, 该服务小区信息携带小区标识、载波或载波组标识及指示所述载波或载波 组标识对应的载波或载波组的负载和干扰状况的 ICIC参数。具体而言 ,该 ICIC 参数传输装置的结构和组成可参照前文长期演进多载波系统小区间干扰协调 ICIC参数传输装置内容和图 11。
本发明实施例还提供另一种通信系统, 包括终端和基站, 所述基站具有载 波资源分配装置, 所述载波资源分配装置用于: 接收来自源小区的服务小区信 息, 该服务小区信息携带小区标识、 载波或载波组标识、 以及指示所述载波或 载波组标识对应的载波或载波组的负载和干扰状况的 ICIC参数; 并且, 当所 述 ICIC参数指示该载波或载波组干扰较大或负载过重时, 确定本小区中的相 应载波或载波组; 以及, 并在对小区边缘终端分配载波资源分配时, 优先分配 本小区中所述相应载波之外的其他载波。
所述服务小区信息具体形式及相关内容可以参照前文 ICIC参数传输方法 部分的内容, 在此不再赘述。
本说明书中的各个实施例均釆用递进的方式描述,每个实施例重点说明的 都是与其他实施例的不同之处, 各个实施例之间相同相似的部分互相参见即 可。 对于装置而言, 由于其与上述方法基本相似, 所以描述得比较简单, 相关 之处参见前文方法部分说明即可。
本领域技术人员可以理解,可以使用许多不同的工艺和技术中的任意一种 来表示信息、 消息和信号。 例如, 上述说明中提到过的消息、 信息都可以表示 为电压、 电流、 电磁波、 磁场或磁性粒子、 光场或以上任意组合。
专业人员还可以进一步意识到,结合本文中所公开的实施例描述的各示例 的单元及算法步骤, 能够以电子硬件、 计算机软件或者二者的结合来实现, 为 了清楚地说明硬件和软件的可互换性,在上述说明中已经按照功能一般性地描 述了各示例的组成及步骤。这些功能究竟以硬件还是软件方式来执行,取决于 技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来 使用不同方法来实现所描述的功能, 但是这种实现不应认为超出本发明的范 围。
结合本文中所公开的实施例描述的方法或算法的步骤可以直接用硬件、处 理器执行的软件模块,或者二者的结合来实施。软件模块可以置于随机存储器 ( RAM ), 内存、只读存储器(ROM )、电可编程 ROM、电可擦除可编程 ROM、 寄存器、 硬盘、 可移动磁盘、 CD-ROM、 或技术领域内所公知的任意其它形式 的存储介质中。
对所公开的实施例的上述说明,使本领域专业技术人员能够实现或使用本 发明。 对这些实施例的多种修改对本领域的专业技术人员来说将是显而易见 的, 本文中所定义的一般原理可以在不脱离本发明的精神或范围的情况下,在 其它实施例中实现。 因此, 本发明将不会被限制于本文所示的这些实施例, 而 是要符合与本文所公开的原理和新颖特点相一致的最宽的范围。

Claims

权 利 要 求
1、一种长期演进多载波系统小区间干扰协调 ICIC参数传输方法, 其特征 在于, 包括:
确定源小区中所有载波的负载和干扰状况,或确定源小区中所有载波组的 负载和干扰状况;
向各邻小区发送服务小区信息, 该服务小区信息携带小区标识、载波或载 波组标识及 ICIC参数;所述 ICIC参数用以指示所述载波或载波组标识对应的 载波或载波组的负载或干 4尤状况。
2、 如权利要求 1所述的方法, 其特征在于, 所述载波或载波组标识为载 波或载波组编号。
3、 如权利要求 2所述的方法, 其特征在于, 向各邻小区发送服务小区信 息具体为: 确定各邻小区的已有载波或载波组,针对各已有载波或载波组发送 服务小区信息。
4、 如权利要求 3所述的方法, 其特征在于, 确定各邻小区的已有载波或 载波组具体为: 依据邻小区通过 X2接口发送的配置信息、 操作维护过程中的 参数、 UE上报的邻小区广播信息或 UE上报的高层通知中的至少一种, 确定 所述邻小区的已有载波或载波组。
5、 如权利要求 2所述的方法, 其特征在于, 向各邻小区发送服务小区信 息具体为: 针对源小区各已有载波或载波组, 发送服务小区信息。
6、 如权利要求 2所述的方法, 其特征在于, 所述源小区中各载波或载波 组的载波编号与各邻小区中相应载波或载波组的载波编号相同。
7、 一种长期演进多载波系统中载波资源分配方法, 其特征在于, 包括: 接收服务小区信息, 该服务小区信息携带小区标识、载波或载波组标识及 ICIC参数; 所述 ICIC参数用以指示所述载波或载波组标识对应的载波或载波 组的负载和干扰状况;
当所述 ICIC参数指示该载波或载波组干护 u较大或负载过重时, 确定本小 区中的相应载波或载波组, 并在对小区边缘终端分配载波资源时,优先分配本 小区中所述相应载波之外的其他载波。
8、 如权利要求 7所述的方法, 其特征在于, 所述载波或载波组标识为载 波或载波组编号。
9、 如权利要求 8所述的方法, 其特征在于, 所述确定本小区中的相应载 波或载波组具体为:确定本小区中载波或载波组编号与所述服务小区信息中的 载波或载波组编号相同的载波或载波组。
10、 如权利要求 8所述的方法, 其特征在于, 所述确定本小区中的相应载 波或载波组具体为:
依据邻小区通过 X2接口发送的配置信息、 操作维护过程中的参数、 UE 上报的邻小区广播信息或 UE上报的高层通知中的至少一种,确定本小区中各 载波或载波组与所述邻小区中各载波或载波组编号的对应关系,并依据该对应 关系, 确定与所述 Λ良务小区信息中的载波或载波组编号相应的载波或载波组。
11、 一种长期演进多载波系统小区间干扰协调 ICIC参数传输装置, 其特 征在于, 包括:
载波状况确定单元,用于确定源小区中所有载波或载波组的负载和干扰状 况;
服务小区信息发送单元, 用于向各邻小区发送服务小区信息, 该服务小区 信息携带小区标识、载波或载波组标识、及指示所述载波或载波组标识对应的 载波或载波组的负载或干扰状况的 ICIC参数。
12、 如权利要求 11所述的装置, 其特征在于, 所述载波或载波组标识为 载波或载波组编号。
13、 如权利要求 12所述的装置, 其特征在于, 所述服务小区信息发送单 元向各邻小区发送服务小区信息的具体方式为:接收来自高层的通知或来自邻 小区的广播信息,依据所述通知或广播信息确定所述邻小区的已有载波或载波 组, 针对各已有载波或载波组发送服务小区信息。
14、 如权利要求 12所述的装置, 其特征在于, 所述服务小区信息发送单 元向各邻小区发送服务小区信息具体方式为: 针对源小区各已有载波或载波 组, 发送服务小区信息。
15、 如权利要求 12所述的装置, 其特征在于, 所述源小区中各载波或载 波组的载波编号与各邻小区中相应载波或载波组的载波编号相同。
16、 一种长期演进多载波系统中载波资源分配装置, 其特征在于, 包括: 服务小区信息接收单元, 用于接收服务小区信息, 该服务小区信息携带小 区标识、载波或载波组标识、 以及指示所述载波或载波组标识对应的载波或载 波组的负载和干扰状况的 ICIC参数;
载波确定单元, 用于当所述 ICIC参数指示该载波或载波组干护 u较大或负 载过重时, 确定本小区中的相应载波或载波组;
载波分配单元,在对小区边缘终端分配载波资源时,优先分配本小区中所 述相应载波之外的其他载波。
17、 如权利要求 16所述的装置, 其特征在于, 所述载波或载波组标识为 载波或载波组编号。
18、 如权利要求 17所述的装置, 其特征在于, 所述载波确定单元确定本 小区中的相应载波或载波组具体方式为:确定本小区中载波或载波组编号与所 述 Λ良务小区信息中的载波或载波组编号相同的载波或载波组。
19、 如权利要求 17所述的装置, 其特征在于, 所述本小区和源小区中各 载波或载波组的编号具有对应关系,用于指示所述对应关系的信息承载于邻小 区通过 Χ2接口发送的配置信息、 操作维护过程中的参数、 UE上报的邻小区 广播信息或 UE上报的高层通知中的至少一种。
20、 一种通信系统, 包括终端和基站, 其特征在于, 所述基站具有干扰协 调 ICIC参数传输装置, 所述 ICIC参数传输装置用于: 确定源小区中所有载波 或载波组的负载和干扰状况, 并向所述源小区的各邻小区发送服务小区信息, 该服务小区信息携带小区标识、载波或载波组标识及指示所述载波或载波组标 识对应的载波或载波组的负载和干 ·ί尤状况的 ICIC参数。
21、 一种通信系统, 包括终端和基站, 其特征在于, 所述基站具有载波资 源分配装置, 所述载波资源分配装置用于: 接收服务小区信息, 该服务小区信 息携带小区标识、载波或载波组标识、 以及指示所述载波或载波组标识对应的 载波或载波组的负载和干扰状况的 ICIC参数; 并且,
当所述 ICIC参数指示该载波或载波组干护 u较大或负载过重时, 确定本小 区中的相应载波或载波组; 以及,
并在对小区边缘终端分配载波资源时,优先分配本小区中所述相应载波之 外的其他载波。
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