WO2011029317A1 - 控制信息的传输方法及基站 - Google Patents
控制信息的传输方法及基站 Download PDFInfo
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- WO2011029317A1 WO2011029317A1 PCT/CN2010/072845 CN2010072845W WO2011029317A1 WO 2011029317 A1 WO2011029317 A1 WO 2011029317A1 CN 2010072845 W CN2010072845 W CN 2010072845W WO 2011029317 A1 WO2011029317 A1 WO 2011029317A1
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- control information
- frequency reuse
- frequency
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- base station
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
- H04W16/02—Resource partitioning among network components, e.g. reuse partitioning
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
Definitions
- a base station refers to a device that provides services for a terminal, and a base station communicates with a terminal through an uplink and downlink link.
- the downlink (Down Link, hereinafter referred to as DL) is also called a forward link.
- the uplink (Up Link, abbreviated as UL) is also called the reverse link, and represents the direction of the terminal to the base station.
- a plurality of terminals can simultaneously transmit data to the base station through the uplink, or can simultaneously receive data from the base station through the downlink.
- Non-user-specific control information refers to information that is not specific to a particular user or a specific group of users.
- the non-user-specific control information includes information required to decode user specific control information, where the user-specific control information is information for a specific user or a specific group of users. It usually includes Assignment Advanced-MAP, Power Control Advanced-MAP, Hybrid Automatic Repeat Request (HARQ) feedback information ( HARQ Feedback Advanced-MAP), and the like.
- the A-MAP Region hereinafter referred to as the control information area, is composed of non-user-specific control information and/or user-specific control information.
- Fractional Frequency Reuse (FFR) technology is usually used.
- figure 1 Is a schematic diagram of implementation of a partial frequency reuse technique according to the related art. As shown in FIG.
- the figure shows the frequency resource allocation manner of adjacent three cells and the transmission power limitation of each frequency set (for example, power level).
- the frequency reuse factor (Reuse Factor) is 1/3 (some literatures define a frequency reuse factor of 3 in this case).
- the frequency resources in f 2 , f 3 are allocated to three adjacent cells. One cell, and the other two cells cannot use the frequency resource, or the other two cells need to use the frequency resource to limit the transmission power. Therefore, the frequency reuse area composed of 2 and f 3 is called
- Reuse Factor 1/3; W U , W 23 , W U constitutes a frequency reuse factor i or a frequency reuse factor of 2/3 (some literatures define a frequency reuse factor of 3/2 in this case), specific
- the related art selects a frequency reuse area for transmitting control information by signaling control.
- an inappropriate frequency reuse area may be selected to transmit non-user-specific control information and user-specific control information, resulting in a transmission efficiency of control information.
- SUMMARY OF THE INVENTION The present invention has been made in view of the problem of low transmission efficiency of control information in the related art. To this end, it is a primary object of the present invention to provide a transmission scheme of control information to solve at least one of the above problems.
- a transmission method of control information is provided.
- a method for transmitting control information includes: selecting, by a base station, a frequency reuse region having a smallest frequency reuse factor among a plurality of frequency reuse regions; and setting a number of physical units included in the selected frequency reuse region and a preset The threshold is compared; when the number of physical units is greater than the threshold, The base station transmits the control information area on the selected frequency reuse area.
- the transmitting, by the base station, the control information area on the selected frequency reuse area comprises: the base station transmitting the control information area on part or all of the frequency sets in the selected frequency reuse area.
- the transmitting, by the base station, the control information area on part or all of the frequency set in the selected frequency reuse area comprises: the base station transmitting the control information area on the frequency set with the highest power level in the selected frequency reuse area.
- the base station determines, according to the control information region transmitted on the frequency set with the highest power level, whether the frequency set other than the frequency set with the highest power level among the plurality of frequency reuse regions transmits the control information region.
- Another method for transmitting control information includes: a base station obtains a frequency set configuration combination; the base station searches for a frequency reuse region corresponding to a frequency set configuration combination in a correspondence relationship; and the base station transmits control information on the determined frequency reuse region. region.
- the transmitting, by the base station, the control information area on the frequency reuse area comprises: the base station transmitting the control information area on a part or all of the frequency set in the frequency reuse area.
- the transmitting, by the base station, the control information area on a part or all of the frequency set in the frequency reuse area comprises: the base station transmitting the control information area on the frequency set with the highest power level in the frequency reuse area.
- the base station determines whether the frequency set other than the frequency set with the highest power level in the plurality of frequency reuse areas transmits the control information area according to the control information area transmitted on the frequency set with the highest power level.
- a base station is provided.
- a base station is configured to transmit control information, including: a selecting module, configured to select a frequency reuse region with a minimum frequency reuse factor among a plurality of frequency reuse regions; and a comparison module, configured to select a frequency reuse region selected by the module The number of physical units included is compared with a preset threshold; the first transmission module is configured to transmit the control information area on the selected frequency reuse area when the number of physical units is greater than a threshold.
- a selecting module configured to select a frequency reuse region with a minimum frequency reuse factor among a plurality of frequency reuse regions
- a comparison module configured to select a frequency reuse region selected by the module The number of physical units included is compared with a preset threshold; the first transmission module is configured to transmit the control information area on the selected frequency reuse area when the number of physical units is greater than a threshold.
- Another base station is configured to transmit control information, including: a setting module, configured to set a correspondence between a frequency set configuration combination and a frequency reuse area of the transmission control information area; and a determining module, configured to perform corresponding according to the setting module The relationship determines a frequency reuse area of the transmission control information area; and the second transmission module is configured to transmit the control information area on the frequency reuse area.
- the method for determining the frequency reuse region for transmitting control information is selected by determining whether the number of physical units included in the frequency reuse region having a small frequency reuse factor exceeds a threshold value, and the control information transmission efficiency is low in the related art. The problem, in turn, achieves reasonable and efficient transmission control information and improves system performance.
- FIG. 1 is a schematic diagram of an implementation of a partial frequency reuse technique according to the related art
- FIG. 2 is a flowchart of a method for transmitting control information according to an embodiment of the present invention
- FIG. 3 is another embodiment of the present invention. A flowchart of a method for transmitting control information
- FIG. 4 is a schematic diagram of a frame structure of IEEE 802.16m according to the related art
- FIG. 5 is a schematic diagram of a frequency resource allocation manner according to an embodiment of the present invention
- FIG. 7 is a flowchart of a method for transmitting control information according to aspect 1 of the embodiment of the present invention
- FIG. 8 is a flowchart of a method for transmitting control information according to an aspect of the present invention
- FIG. 9 is a structural block diagram of another base station according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION
- the present invention provides a transmission scheme of control information, and the base station selects the frequency reuse factor among the plurality of frequency reuse areas.
- the small frequency reuse area compares the number of physical units included in the selected frequency reuse area with a preset threshold. When the number of physical units is greater than the threshold, the base station transmits on the selected frequency reuse area.
- the control information area can transmit the control information of the wireless communication system reasonably and efficiently, and improves the performance of the entire wireless communication system.
- a frequency resource of a time zone in which control information is transmitted is described.
- the frequency resource includes: a plurality of frequency reuse zones, the frequency reuse factor in the multiple frequency reuse zones is different, and each frequency reuse zone includes one Or multiple frequency sets. According to an embodiment of the present invention, a method of transmitting control information is provided.
- the method includes: the base station selects a frequency set of the transmission control information area according to the configuration of the downlink frequency set, that is, when the number of physical units included in the frequency reuse area with the smallest frequency reuse factor is greater than or equal to a predetermined threshold N, the base station reuses the frequency.
- the control information area is transmitted on the area.
- the predetermined threshold N can be configured by a standard default.
- FIG. 2 is a flowchart of a method for transmitting control information according to an embodiment of the present invention. As shown in FIG. 2, the method specifically includes the following steps S202 to S206: Step S202, the base station selects a frequency in multiple frequency reuse areas. Reuse the frequency reuse area with the smallest factor.
- step S204 the number of physical units included in the selected frequency reuse area is compared with a preset threshold. When the number of physical units is greater than or equal to the threshold, step S206 is performed. Step S206, the base station transmits the control information area on the selected frequency reuse area.
- an inappropriate frequency reuse area may be selected to transmit non-user-specific control information and user-specific control information, resulting in low transmission efficiency of control information.
- selecting a frequency reuse area with a minimum frequency reuse factor among a plurality of frequency reuse areas, and selecting a frequency reuse area with a small reuse degree can ensure transmission quality of the control information area, and When the number of physical units included in the frequency reuse region is greater than or equal to the threshold, the transmission of the control information region can improve the transmission efficiency of the control information, thereby improving the performance of the entire wireless communication system.
- the base station transmits the control information area on the selected frequency reuse area, including the following manner. In a first mode, the base station transmits a control information area on a part or all of the frequency sets in the selected frequency reuse area.
- the base station may transmit the control information area on the frequency set with the highest power level in the selected frequency reuse area. Further, the base station may transmit the foregoing control on part or all of the distributed logical resources of the highest frequency set of the power level. Information area. In this way, the control information area is transmitted on the frequency set with the highest power level, and the transmission quality of the control information area can be further ensured. In the second mode, the base station may transmit the foregoing control information area on part or all of the distributed logical resources of the selected frequency reuse area. Before transmitting the control information area, the terminal receives the information about the configuration of the downlink frequency set sent by the base station, and then responds to the frequency set configuration.
- the base station receives the information from the terminal in response to the frequency set configuration information, and then transmits the control information area on the selected frequency reuse area, so that the terminal obtains the downlink frequency set of the transmission control information area, where the frequency set configuration information carries the selected Information on the frequency reuse area.
- the base station determines, according to the control information area transmitted on the frequency set with the highest power level, whether the frequency set except the frequency set with the highest power level among the multiple frequency reuse areas transmits control information. region. In this way, based on the transmission of the control information area, the control information area can be used to determine whether there are other frequency sets for transmitting the control information area.
- the extension can be The range of the frequency set of the transmission control information area, on the other hand, enables a flexible indication of the frequency set of the transmission control information area.
- the control information area includes: non-user-specific control information or user-specific control information.
- the non-user-specific control information includes at least: information indicating a resource used to transmit the user-specific control information; the non-user-specific control information may further include: indicating another frequency reuse other than the frequency reuse region having the smallest frequency reuse factor Whether the identifier of the control information area is transmitted on the area.
- the base station may transmit the control information by using any one of broadcast, multicast, or unicast. According to an embodiment of the present invention, another method of transmitting control information is provided. FIG.
- Step S302 when the downlink frequency set is configured with N combinations.
- the standard may configure the frequency set of the transmission control information area in each combination by default, that is, the correspondence between the base station configuration set configuration combination and the frequency reuse area;
- Step S304 the base station local frequency set configuration combination determination and the frequency set configuration
- the corresponding frequency reuse area is combined to transmit the control information area. For example, when a combination requires the base station to transmit the control information area on the frequency reuse area where the frequency reuse factor is the smallest, the base station transmits the above control information area on the frequency reuse area where the frequency reuse factor is the smallest.
- the base station determines a frequency reuse area corresponding to the frequency set configuration combination according to the frequency set configuration combination, and transmits the control information area on the frequency reuse area, so that the frequency reuse for transmission can be easily determined.
- the area, and the flexible indication of the frequency reuse area of the transmission can improve the transmission efficiency of the control information when the appropriate frequency reuse area is selected, thereby improving the performance of the entire wireless communication system.
- the base station transmits the control information area on the frequency reuse area to include the following manner. In a first mode, the base station transmits a control information area on a part or all of the frequency set in the frequency reuse area.
- the base station may transmit the control information area on the frequency set with the highest power level in the frequency reuse area. Further, the base station may transmit the control information area on part or all of the distributed logical resources of the frequency set. In this way, the control information area is transmitted on the frequency set with the highest power level, and the transmission quality of the control information area can be further ensured.
- the base station transmits the control information area on part or all of the distributed logical resources of the frequency reuse area. Before transmitting the control information region, the base station receives the information from the terminal in response to the frequency set configuration information, and then transmits the control information region on the frequency reuse region, wherein the frequency set configuration information carries the information of the frequency reuse region.
- the base station After transmitting the control information area on the frequency reuse area, the base station determines, according to the control information area transmitted on the frequency set with the highest power level, whether the frequency set other than the frequency set with the highest power level in the plurality of frequency reuse areas transmits the control information area. . In this way, based on the transmission of the control information area, the control information area can be used to determine whether there are other frequency sets for transmitting the control information area.
- the extension can be The range of the frequency set of the transmission control information area, on the other hand, enables a flexible indication of the frequency set of the transmission control information area.
- the control information area includes: non-user-specific control information and/or user-specific control information.
- the non-user-specific control information includes at least: information indicating a resource used to transmit the user-specific control information; and the non-user-specific control information may further include: indicating the frequency reuse area other than the frequency reuse factor having the smallest frequency reuse area Whether the identifier of the control information area is transmitted on the frequency reuse area.
- the base station may transmit the foregoing control information by any one of broadcast, multicast, or unicast.
- the implementation process of the embodiment of the present invention will be described in detail in two aspects with reference to the examples.
- 4 is a schematic diagram of a frame structure of IEEE 802.16m according to the related art. As shown in FIG. 4, radio resources are divided into super frames, frames, sub-frames, and Orthogonal Frequency Division Multiplexing (abbreviation).
- FIG. 5 is a schematic diagram of a frequency resource allocation manner according to an embodiment of the present invention.
- the figure shows a frequency resource allocation manner of adjacent three cells and a transmission power limitation condition (for example, a power level) of each frequency set, as shown in FIG. 5.
- all available downlink frequency resources are divided into four frequency sets W: [W interceptW 2 , W , W U ] , where, the frequency reuse factor of the frequency reuse region composed of f 2 and f 3 is
- Aspect 6 is a flowchart of a method for transmitting control information according to aspect 1 of the embodiment of the present invention. As shown in FIG. 6, it is assumed that a base station needs to transmit a control information area on a certain subframe of a superframe, and the subframe is The frequency resource is divided into four frequency sets as shown in FIG.
- the frequency reuse regions with the frequency reuse factor of 1 includes a frequency set
- the method for controlling the information region includes the following steps: 4: S602 to S604: Step S602, the base station or the system determines the transmission control information region according to the configuration of the downlink frequency set.
- the set of frequencies, and the control information area is transmitted through the downlink channel.
- Step S604 determining a frequency set in which the control information area is located according to the configuration of the downlink frequency set.
- Example 1 In a system with a bandwidth of lOMhz, the number of physical units included in each subframe is 48, and each subframe is composed of 4 frequency sets (as shown in FIG. 5), and the frequency reuse factor is When the number of physical units included in the 1/3 frequency reuse region is greater than or equal to 24, that is, the number of physical units included in each frequency set constituting the frequency reuse region is greater than or equal to 8, and the base station is the highest in the frequency reuse region.
- the control information area is transmitted on the frequency set of the power level.
- the base station transmits the foregoing frequency set configuration information to the terminal in the superframe header, and after receiving the information, the terminal determines that the base station transmits the control information region on the frequency set of the highest power level constituting the frequency reuse region with the frequency reuse factor of 1/3. . It should be noted that whether the transmission control information region is on the frequency reuse region with the frequency reuse factor of 1 and/or the other two frequency sets constituting the frequency reuse region with the frequency reuse factor of 1/3 can be composed of the frequency reuse factor of 1.
- the base station uses the frequency reuse region with the frequency reuse factor of 1.
- the frequency control set transmits the control information area.
- the base station transmits the frequency set configuration information to the terminal in the superframe header, and after receiving the information, the terminal determines that the base station transmits the control information region on the frequency set constituting the frequency reuse region with the frequency reuse factor of 1.
- FIG. 7 is a flowchart of a method for transmitting control information according to aspect 2 of the embodiment of the present invention. As shown in FIG. 7, it is assumed that a base station needs to transmit a control information area on a certain subframe of a superframe, and the subframe is The frequency resource is divided into four frequency sets as shown in FIG. 5 to form two frequency reuse regions (the frequency reuse factors are 1/3 and 1 respectively), wherein the frequency reuse factor with a frequency reuse factor of 1/3 includes three frequencies.
- the frequency reuse region with the frequency reuse factor of 1 includes a frequency set, and the method includes steps S702 to S704: Step S702, the base station or the system selects a set of downlink frequency set configurations from the existing M group frequency set configuration combinations, according to The downlink frequency set configuration of the standard default setting determines the transmission location of the control information area. Step S704, the terminal determines the frequency set in which the control information area is located according to the configuration of the downlink frequency set.
- Example 3 In a system with a bandwidth of 20 Mhz, it is assumed that the number of physical units included in each subframe is 96, and each subframe consists of four frequency sets (as shown in FIG. 5), and there are 16 groups of downlink frequencies.
- the base station In the set configuration combination, when the default configuration is set to the first group to the eighth group, the base station transmits the control information area on the frequency set of the frequency reuse area with the frequency reuse factor of 1, and the default configuration of the support standard is the ninth group.
- the base station transmits the control information area on the frequency set of the highest power level of the frequency reuse area with the frequency reuse factor of 1/3.
- the base station transmits the foregoing frequency set configuration information (for example, selecting the seventh group downlink frequency set configuration) to the terminal in the superframe header, and after receiving the information, the terminal adopts a standard default configuration, and determines that the base station is configured to have a frequency reuse factor of
- the frequency control region of the frequency reuse region of 1 transmits the control information region. It should be noted that whether the transmission control information region is on each frequency set of the frequency reuse region with the frequency reuse factor of 1/3 can be indicated by the control information region transmitted on the frequency set constituting the frequency reuse factor of 1.
- Example 4 In a system with a bandwidth of lOMhz, the number of physical units included in each subframe is 48, and each subframe consists of 4 frequency sets (as shown in FIG.
- the set configuration combination when the standard default configuration is the first group or the sixth group to the eighth group, the base station transmits the control information region on the frequency set of the frequency reuse region with the frequency reuse factor of 1, assuming that the standard default configuration is the first 2 to the fifth group, the base station transmits the control information area on the frequency set of the highest power level of the frequency reuse area with the frequency reuse factor of 1/3.
- the base station transmits the foregoing frequency set configuration information (for example, selecting the fifth group downlink frequency set configuration) to the terminal in the super frame header, and after receiving the information, the terminal determines, according to the standard default configuration, that the base station is configured to have a frequency reuse factor of 1.
- the transmission control information area is transmitted on the frequency set of the highest power level of the /3 frequency reuse area. It should be noted that whether the transmission control information region is transmitted on the frequency reuse region with the frequency reuse factor of 1 and/or the other two frequency sets constituting the frequency reuse region with the frequency reuse factor of 1/3 can be composed of the frequency reuse factor of 1/.
- the control information area transmitted on the frequency set of the highest power level of the frequency reuse region of 3 is indicated.
- An embodiment of the present invention provides a base station according to an embodiment of the present invention.
- FIG. 8 is a structural block diagram of a base station according to an embodiment of the present invention. As shown in FIG. 8, the base station includes: a selection module 82, a comparison module 84, The first transmission module 86 will be described in detail below.
- the selecting module 82 is configured to select a frequency reuse region with a minimum frequency reuse factor among the plurality of frequency reuse regions; the comparison module 84 is connected to the selection module 82, and is configured to select the physical unit included in the frequency reuse region selected by the selection module 82. The number is compared with a preset threshold; the first transmission The module 86 is coupled to the comparison module 84 for transmitting the control information area on the selected frequency reuse area when the number of physical units is greater than or equal to the threshold.
- the frequency reuse area with the smallest frequency reuse factor is selected in the plurality of frequency reuse areas by the selection module 82, and the frequency reuse area with less reutilization is selected to ensure the transmission quality of the control information area.
- the comparison module 84 compares the number of physical units included in the frequency reuse area with a preset threshold, and the first transmission module 86 transmits the control information area when the number of physical units is greater than or equal to the threshold, thereby improving the transmission efficiency of the control information. Thereby improving the performance of the entire wireless communication system.
- another base station is provided.
- FIG. 9 is a structural block diagram of another base station according to an embodiment of the present invention. As shown in FIG. 9, the base station includes: a setting module 92, a determining module 94, and a The second transmission module 96 will be described in detail below.
- the setting module 92 is configured to set a correspondence between the frequency set configuration combination and the frequency reuse area of the transmission control information area; the determining module 94 is connected to the setting module 92, and is configured to determine a frequency reuse area of the transmission control information area; the second transmission module 96 Connected to the determination module 94 for transmitting a control information area on the frequency reuse area.
- the determining module 94 determines a frequency reuse area corresponding to the frequency set configuration combination according to the frequency set configuration combination, and the second transmission module 96 transmits the control information area on the frequency reuse area, hardly determine the frequency reuse area for transmission and realize flexible indication of the frequency reuse area of transmission.
- the transmission efficiency of the control information can be improved, thereby improving the overall wireless communication system. performance.
- the method described in the embodiment of the present invention solves the problem that the control information cannot be transmitted reasonably and efficiently in the prior art, so that the control information of the wireless communication system can be transmitted reasonably and efficiently, and the entire wireless communication system is improved. performance.
- 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.
- the invention 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.
- the invention is not limited to any particular hardware and software. Piece combination.
- 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.
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Abstract
本发明公开了一种控制信息的传输方法及基站，该方法包括：基站在多个频率重用区域中选取频率重用因子最小的频率重用区域，将选取的频率重用区域中包含的物理单元的个数与预先设定的阈值进行比较，当物理单元的个数大于或等于该阈值时，基站在选取的频率重用区域上传输控制信息区域。通过本发明，能够合理、高效的传输控制信息，同时提高了系统性能。
Description
控制信息的传输方法及基站 技术领域 本发明涉及通信领域，具体而言，涉及一种控制信息的传输方法及基站。 背景技术 在无线通信系统中， 基站是指为终端提供服务的设备， 基站通过上下行 链路与终端进行通信， 其中， 下行链路（Down Link, 简称为 DL )也称为前 向链路， 代表从基站到终端的方向， 上行链路 （Up Link, 简称为 UL ) 也称 作反向链路， 代表终端到基站的方向。 多个终端可以同时通过上行链路向基 站发送数据， 也可以同时通过下行链路从基站接收数据。 在釆用基站调度控制的数据传输系统中，通常由基站调度或分配系统资 源， 例如， 由基站分配进行下行传输时所使用的资源以及终端进行上行传输 时所能使用的资源等。 在釆用正交频分多址接入 ( Orthogonal Frequency Division Multiplex Access, 简称为 OFDMA )技术的时分双工 （Time Division Duplex, 简称为 TDD )或频分双工（ Frequency Division Duplex, 简称为 FDD )无线通信系统 (例如， 电气和电子工程师十办会 ( Institute for Electrical and Electronic Engineers,简称为 IEEE )802.16m )中，非用户专有控制信息（ Non-user- specific control information, 或者 , Non-user-specific Advanced - MAP )是指不针对某 个特定用户或某特定用户组的信息。 通常情况下， 非用户专有控制信息包括 解码用户专有控制信息（ User specific control information )所需的信息，其中， 用户专有控制信息是指针对某个特定用户或某特定用户组的信息， 通常包括 资源分配信息 （ Assignment Advanced-MAP )、 功率控制信息 （ Power Control Advanced-MAP )、 混合自动重传请求 （ Hybrid Automatic Repeat Request, 简 称为 HARQ )反馈信息（ HARQ Feedback Advanced-MAP )等。 A-MAP Region, 下面称为控制信息区域， 由非用户专有控制信息和 /或用户专有控制信息构 成。 在釆用 OFDMA技术的 TDD或 FDD无线通信系统的实际应用中， 通 常釆用部分频率重用 （Fractional Frequency Reuse, 简称为 FFR )技术。 图 1
是根据相关技术的部分频率重用技术的实现的示意图， 如图 1所示， 图中示 出了相邻三个小区的频率资源分配方式以及各个频率集合的发射功率限制情 况 （例如， 功率级别）， 将所有可用的下行频率资源划分为 7 个频率集合 W :[W„W2,W,WU,W2 ,WU,WU ] , 其中， ,f 2,f 3构成的频率重用区域的频率重 用因子 （Reuse Factor ) 为 1/3 (某些文献定义这种情况下的频率重用因子为 3 ), 具体地， ,f 2,f 3中的频率资源分配给三个相邻小区中一个小区， 而其 他两个小区则不能使用该频率资源， 或者其他两个小区需要釆用限制其发射 功率的方法来使用该频率资源， 因此， 称 , 2,f 3构成的频率重用区域的
Reuse Factor = 1/3; WU,W23,WU 构成的频率重用区 i或的频率重用因子为 2/3 (某些文献定义这种情况下的频率重用因子为 3/2), 具体地， 2, 23,^3中 的频率资源分配给三个相邻小区中两个小区， 而第三个小区则不能使用该频 率资源或者需要釆用限制其发射功率的方法来使用该频率资源， 因此， 称 2,^23,^3构成的频率重用区域的 Reuse Factor = 2/3; 23构成的频率重用区 域的频率重用因子为 1, 具体的， 三个相邻小区都可以不加限制的使用该频 率资源， 因此， 称 23构成的频率重用区域的 Reuse Factor = 1。 相关技术通 过信令控制选择传输控制信息的频率重用区域。 目前， 在使用 OFDMA技术 （特别是釆用 FFR技术） 的无线通信系统 中， 可能会选择不合适的频率重用区域传输非用户专有控制信息和用户专有 控制信息， 导致控制信息的传输效率较低。 发明内容 针对相关技术中控制信息传输效率低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控制信息的传输方案，以解决上述问题至少之一。 为了实现上述目的， 根据本发明的一个方面， 提供了一种控制信息的传 输方法。 根据本发明的一种控制信息的传输方法包括：基站在多个频率重用区域 中选取频率重用因子最小的频率重用区域； 将选取的频率重用区域中包含的 物理单元的个数与预先设定的阈值进行比较；当物理单元的个数大于阈值时，
基站在选取的频率重用区域上传输控制信息区域。 优选地， 基站在选取的频率重用区域上传输控制信息区域包括： 基站在 选取的频率重用区域中的部分或全部频率集合上传输控制信息区域。 优选地，基站在选取的频率重用区域中的部分或全部频率集合上传输控 制信息区域包括： 基站在选取的频率重用区域中的功率级别最高的频率集合 上传输控制信息区域。 优选地, 基站根据功率级别最高的频率集合上传输的控制信息区域， 确 定多个频率重用区域中除功率级别最高的频率集合之外的频率集合是否传输 控制信息区域。 为了实现上述目的， 根据本发明的另一方面， 提供了另一种控制信息的 传输方法。 根据本发明的另一种控制信息的传输方法包括：基站获得频率集合配置 组合；基站在对应关系中查找确定对应于频率集合配置组合的频率重用区域； 基站在确定的频率重用区域上传输控制信息区域。 优选地, 基站在频率重用区域上传输控制信息区域包括： 基站在频率重 用区域中的部分或全部频率集合上传输控制信息区域。 优选地，基站在频率重用区域中的部分或全部频率集合上传输控制信息 区域包括： 基站在频率重用区域中的功率级别最高的频率集合上传输控制信 息区域。 优选地，基站才艮据功率级别最高的频率集合上传输的控制信息区域确定 多个频率重用区域中除功率级别最高的频率集合之外的频率集合是否传输控 制信息区域。 为了实现上述目的， 才艮据本发明的又一方面， 提供了一种基站。 根据本发明的一种基站用于传输控制信息， 包括： 选择模块， 用于在多 个频率重用区域中选取频率重用因子最小的频率重用区域； 比较模块， 用于 将选取模块选取的频率重用区域中包含的物理单元的个数与预先设定的阈值 进行比较； 第一传输模块， 用于当物理单元的个数大于阈值时， 在选取的频 率重用区域上传输控制信息区域。
为了实现上述目的， 根据本发明的再一方面， 提供了另一种基站。 根据本发明的另一种基站用于传输控制信息， 包括： 设置模块， 用于设 置频率集合配置组合与传输控制信息区域的频率重用区域的对应关系； 确定 模块， 用于根据设置模块设置的对应关系确定传输控制信息区域的频率重用 区域； 第二传输模块， 用于在频率重用区域上传输控制信息区域。 通过本发明，釆用判断频率重用因子小的频率重用区域包含的物理单元 的个数是否超过阈值来选择用于传输控制信息的频率重用区域的方式， 解决 了相关技术中控制信息传输效率低的问题， 进而达到了合理、 高效的传输控 制信息以及提高系统性能的效果。 附图说明 此处所说明的附图用来提供对本发明的进一步理解，构成本申请的一部 分， 本发明的示意性实施例及其说明用于解释本发明， 并不构成对本发明的 不当限定。 在附图中： 图 1是根据相关技术的部分频率重用技术的实现的示意图； 图 2根据本发明实施例的一种控制信息的传输方法的流程图； 图 3是根据本发明实施例的另一种控制信息的传输方法的流程图； 图 4是才艮据相关技术的 IEEE 802.16m的帧结构的示意图； 图 5是才艮据本发明实施例的频率资源分配方式的示意图； 图 6是根据本发明实施例的方面一的控制信息的传输方法的流程图； 图 7是根据本发明实施例的方面二的控制信息的传输方法的流程图； 图 8是 居本发明实施例的一种基站的结构框图； 图 9是 居本发明实施例的另一种基站的结构框图。 具体实施方式 考虑到相关技术中不能合理高效的传输控制信息的问题，本发明提供了 一种控制信息的传输方案， 基站在多个频率重用区域中选取频率重用因子最
小的频率重用区域， 将选取的频率重用区域中包含的物理单元的个数与预先 设定的阈值进行比较， 当物理单元的个数大于所述阈值时， 基站在选取的频 率重用区域上传输控制信息区域， 能够合理高效地传输无线通信系统的控制 信息， 提高了整个无线通信系统的性能。 需要说明的是， 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。 下面将参考附图并结合实施例来详细说明本发明。 在以下实施例中，在附图的流程图示出的步 4聚可以在诸如一组计算机可 执行指令的计算机系统中执行， 并且， 虽然在流程图中示出了逻辑顺序， 但 是在某些情况下， 可以以不同于此处的顺序执行所示出或描述的步骤。 方法实施例 首先， 对传输控制信息的时间区域的频率资源进行说明， 该频率资源包 括： 多个频率重用区域， 该多个频率重用区域中的频率重用因子不同， 且每 个频率重用区域包括一个或多个频率集合。 根据本发明的实施例， 提供了一种控制信息的传输方法。 该方法包括： 基站根据下行频率集合的配置情况选择发送控制信息区域的频率集合， 即， 当频率重用因子最小的频率重用区域上包含物理单元个数大于或等于预定阈 值 N时， 在该频率重用区域上传输控制信息区域。 其中， 预定阈值 N可以由 标准缺省配置。 图 2是根据本发明实施例的一种控制信息的传输方法的流程 图， 如图 2所示， 该方法具体包括如下步骤 S202至步骤 S206: 步骤 S202, 基站在多个频率重用区域中选取频率重用因子最小的频率 重用区域。 步骤 S204, 将上述选取的频率重用区域中包含的物理单元的个数与预 先设定的阈值进行比较， 当物理单元的个数大于或等于阈值时， 执行步骤 S206。 步骤 S206, 基站在选取的频率重用区域上传输控制信息区域。 相关技术中，可能会选择不合适的频率重用区域传输非用户专有控制信 息和用户专有控制信息， 导致控制信息的传输效率较低。 本发明实施例提供 的方法中， 在多个频率重用区域中选取频率重用因子最小的频率重用区域， 选取重用度较小的频率重用区域， 能够保证控制信息区域的传输质量， 同时，
在频率重用区域中包含的物理单元的个数大于或等于阈值时， 传输控制信息 区域， 能够提高控制信息的传输效率，从而提高了整个无线通信系统的性能。 在步骤 S206中， 基站在选取的频率重用区域上传输控制信息区域包括 以下方式。 方式一，基站在选取的频率重用区域中的部分或全部频率集合上传输控 制信息区域。 优选地， 基站可以在选取的频率重用区域中的功率级别最高的 频率集合上传输控制信息区域， 进一步地， 基站可以在该功率级别最高的频 率集合的部分或全部分布式逻辑资源上传输上述控制信息区域。 通过该方式， 在功率级别最高的频率集合上传输控制信息区域， 能够进 一步保证控制信息区域的传输质量。 方式二，基站可以在选取的频率重用区域的部分或全部分布式逻辑资源 上传输上述控制信息区域。 在传输控制信息区域之前，终端接收基站发送的包含下行频率集合配置 情况的信息后对频率集合配置情况做出响应。 基站接收来自终端的响应于频 率集合配置信息的信息， 然后，在选取的频率重用区域上传输控制信息区域， 使终端获得发送控制信息区域的下行频率集合， 其中， 频率集合配置信息携 带有选取的频率重用区域的信息。 在选取的频率重用区域上传输控制信息区域之后，基站根据功率级别最 高的频率集合上传输的控制信息区域确定多个频率重用区域中除功率级别最 高的频率集合之外的频率集合是否传输控制信息区域。 通过该方式， 能够在 釆用功率级别最高的频率集合来传输控制信息区域的基础上， 通过该控制信 息区域来确定是否还有其他的频率集合用于传输控制信息区域， 一方面， 扩 展了可传输控制信息区域的频率集合的范围， 另一方面， 实现了传输控制信 息区域的频率集合的灵活指示。 其中， 控制信息区域包括： 非用户专有控制信息或用户专有控制信息。 非用户专有控制信息至少包括： 指示传输用户专有控制信息所使用的资源的 信息； 非用户专有控制信息还可以包括： 用于指示除频率重用因子最小的频 率重用区域外的其它频率重用区域上是否传输控制信息区域的标识。 其中，基站可以通过广播、组播、或单播中的任一种方式传输控制信息。
根据本发明的实施例， 提供了另一种控制信息的传输方法。 图 3是根据本发明实施例的另一种控制信息的传输方法的流程图，如图 3所示， 该方法包括以下步 4聚 S302至 S304： 步骤 S302, 当下行频率集合配置有 N种组合时， 标准可缺省配置每种 组合情况下发送控制信息区域的频率集合， 即， 基站配置集合配置组合与频 率重用区域的对应关系； 步骤 S304, 基站 居频率集合配置组合确定与该频率集合配置组合对 应的频率重用区域， 以传输控制信息区域。 例如， 当一种组合要求基站在频 率重用因子最小的频率重用区域上发送控制信息区域时， 基站在频率重用因 子最小的频率重用区域上传输上述控制信息区域。 本发明实施例提供的方法中，基站根据频率集合配置组合确定与该频率 集合配置组合对应的频率重用区域， 并在该频率重用区域上传输控制信息区 域， 能够简便地确定用于传输的频率重用区域， 并实现传输的频率重用区域 的灵活指示， 在选择了合适的频率重用区域的情况下， 能够提高控制信息的 传输效率， 从而提高了整个无线通信系统的性能。 在步骤 S304中， 基站在该频率重用区域上传输控制信息区域包括以下 方式。 方式一，基站在该频率重用区域中的部分或全部频率集合上传输控制信 息区域。 优选地， 基站可以在该频率重用区域中的功率级别最高的频率集合 上传输控制信息区域， 进一步地， 基站可以在该频率集合的部分或全部分布 式逻辑资源上传输上述控制信息区域。 通过该方式， 在功率级别最高的频率集合上传输控制信息区域， 能够进 一步保证控制信息区域的传输质量。 方式二，基站在该频率重用区域的部分或全部分布式逻辑资源上传输上 述控制信息区域。 在传输控制信息区域之前，基站接收来自终端的响应于频率集合配置信 息的信息， 然后， 在该频率重用区域上传输控制信息区域， 其中， 频率集合 配置信息携带有该频率重用区域的信息。
在该频率重用区域上传输控制信息区域之后，基站根据功率级别最高的 频率集合上传输的控制信息区域确定多个频率重用区域中除功率级别最高的 频率集合之外的频率集合是否传输控制信息区域。 通过该方式， 能够在釆用 功率级别最高的频率集合来传输控制信息区域的基础上， 通过该控制信息区 域来确定是否还有其他的频率集合用于传输控制信息区域， 一方面， 扩展了 可传输控制信息区域的频率集合的范围， 另一方面， 实现了传输控制信息区 域的频率集合的灵活指示。 其中， 控制信息区域包括： 非用户专有控制信息和 /或用户专有控制信 息。 非用户专有控制信息至少包括： 指示传输用户专有控制信息所使用的资 源的信息； 并且， 非用户专有控制信息还可以包括： 用于指示除频率重用因 子最小的频率重用区域外的其它频率重用区域上是否传输控制信息区域的标 识。 其中， 基站可以通过广播、 组播、 或单播中的任一方式传输上述控制信 息。 下面将结合实例从两个方面对本发明实施例的实现过程进行详细描述。 图 4是才艮据相关技术的 IEEE 802.16m的帧结构的示意图，如图 4所示， 无线资源被划分成超帧、 帧、 子帧和正交频分复用 （ Orthogonal Frequency Division Multiplexing, 简称为 OFDM )符号的不同结构粒度。 首先， 将无线 资源划分为在时间上连续的超帧， 每个超帧的时间长度为 20 毫秒， 其中， 每个超帧由 4个时间长度为 5毫秒、的帧组成， 每个帧还包括 8个子帧， 每个 子帧由 6个 OFDM符号组成。 图 5是 居本发明实施例的频率资源分配方式的示意图，图中示出了相 邻三个小区的频率资源分配方式和各个频率集合的发射功率限制情况（例如， 功率级别）， 如图 5 所示， 将所有可用下行频率资源划分为 4 个频率集合 W : [W„W2, W , WU ] , 其中， , f 2, f 3构成的频率重用区域的频率重用因子为
1/3 , 具体地， , f 2, f 3中的频率资源分配给三个相邻小区中一个小区， 而其 他两个小区则不能使用该频率资源或者需要釆用限制其发射功率的方法来使 用该频率资源； 23 构成的频率重用区域的频率重用因子为 1 , 具体的， 三 个相邻小区都可以不加限制的使用该频率资源。
方面一 图 6是根据本发明实施例的方面一的控制信息的传输方法的流程图，如 图 6所示， 假设基站需要在超帧的某个子帧上传输控制信息区域， 且该子帧 的频率资源按照图 5所示划分成四个频率集合， 形成两个频率重用区域 (频 率重用因子分别为 1/3和 1 ), 其中， 频率重用因子为 1/3的频率重用区域包 含三个频率集合， 频率重用因子为 1的频率重用区域包含一个频率集合， 控 制信息区域的方法包括以下步 4聚 S602至 S604: 步骤 S602, 基站或系统才艮据下行频率集合的配置情况确定发送控制信 息区域的频率集合， 并通过下行信道发送控制信息区域。 步骤 S604, 根据下行频率集合的配置情况确定控制信息区域所在的频 率集合。 下面结合实例一、 实例二对本发明实施例的方面一进行详细说明。 实例一 在带宽为 lOMhz的系统中， 個_设各个子帧上包含的物理单元个数为 48 个， 且每个子帧均由 4个频率集合构成 （如图 5所示）， 频率重用因子为 1/3 的频率重用区域包含的物理单元个数大于或等于 24 时， 即， 构成该频率重 用区域的每个频率集合包含的物理单元个数大于或等于 8, 基站在该频率重 用区域的最高功率级别的频率集合上传输控制信息区域。 基站在超帧头将上述频率集合配置信息传输给终端，终端在收到该信息 之后， 确定基站在构成频率重用因子为 1/3 的频率重用区域的最高功率级别 的频率集合上传输控制信息区域。 需要指出的是， 频率重用因子为 1 的频率重用区域上和 /或构成频率重 用因子为 1/3 的频率重用区域的其它两个频率集合上是否传输控制信息区域 可以由构成频率重用因子为 1/3 的频率重用区域的最高功率级别的频率集合 上传输的控制信息区域指示。 实例二 在带宽为 5Mhz 的系统中， 支设各个子帧上包含的物理单元个数为 24 个， 且每个子帧由 4个频率集合构成（如图 5所示）， 频率重用因子为 1/3的
频率重用区域包含的物理单元个数小于或等于 12 时， 即， 构成该频率重用 区域的每个频率集合包含的物理单元个数小于或等于 4时， 基站在频率重用 因子为 1的频率重用区域的频率集合上传输控制信息区域。 基站在超帧头将上述频率集合配置信息传输给终端，终端在收到该信息 之后， 确定基站在构成频率重用因子为 1的频率重用区域的频率集合上传输 控制信息区域。 需要指出的是， 频率重用因子为 1/3的频率重用区域的各频率集合上是 否传输控制信息区域可由构成频率重用因子为 1的频率集合上传输的控制信 息区域指示。 方面二 图 7是根据本发明实施例的方面二的控制信息的传输方法的流程图，如 图 7所示， 假设基站需要在超帧的某个子帧上传输控制信息区域， 且该子帧 的频率资源按照图 5所示划分成四个频率集合， 形成两个频率重用区域 (频 率重用因子分别为 1/3和 1 ), 其中， 频率重用因子为 1/3的频率重用区域包 含三个频率集合， 频率重用因子为 1的频率重用区域包含一个频率集合， 该 方法包括步骤 S702至 S704: 步骤 S702 , 基站或系统从已有的 M组频率集合配置组合中选择一组下 行频率集合配置， 依据标准缺省设置的该下行频率集合配置确定控制信息区 域的发送位置。 步骤 S704, 终端才艮据下行频率集合的配置情况确定控制信息区域所在 的频率集合。 下面结合实例三、 实例四对本发明实施例的方面二进行详细说明。 实例三 在带宽为 20Mhz的系统中， 假设其各子帧上包含的物理单元个数为 96 个， 且每个子帧由 4个频率集合构成 （如图 5所示；)， 共有 16组下行频率集 合配置组合， 支设标准缺省配置为第 1组到第 8组时， 基站在频率重用因子 为 1的频率重用区域的频率集合上传输控制信息区域， 支设标准缺省配置为 第 9组到第 16组时，基站在频率重用因子为 1/3的频率重用区域的最高功率 级别的频率集合上传输控制信息区域。
基站在超帧头将上述频率集合配置信息（例如， 选择第 7组下行频率集 合配置）传输给终端， 终端在收到该信息之后， 居标准的缺省配置， 确定 基站在构成频率重用因子为 1的频率重用区域的频率集合上传输控制信息区 域。 需要指出的是， 频率重用因子为 1/3的频率重用区域的各频率集合上是 否传输控制信息区域可由构成频率重用因子为 1的频率集合上传输的控制信 息区域指示。 实例四 在带宽为 lOMhz的系统中， 個_设各个子帧上包含的物理单元个数为 48 个， 且每个子帧由 4个频率集合构成 （如图 5所示）， 共有 8组下行频率集 合配置组合， 设标准缺省配置为第 1组或第 6组到第 8组时， 基站在频率 重用因子为 1的频率重用区域的频率集合上传输控制信息区域， 假设标准缺 省配置为第 2到第 5组时， 基站在频率重用因子为 1/3的频率重用区域的最 高功率级别的频率集合上传输控制信息区域。 基站在超帧头将上述频率集合配置信息（例如， 选择第 5组下行频率集 合配置）传输给终端， 终端收到该信息后， 根据标准的缺省配置， 确定基站 在构成频率重用因子为 1/3 的频率重用区域的最高功率级别的频率集合上传 输控制信息区域。 需要指出的是， 频率重用因子为 1 的频率重用区域上和 /或构成频率重 用因子为 1/3 的频率重用区域的其它两个频率集合上是否传输控制信息区域 可由构成频率重用因子为 1/3 的频率重用区域的最高功率级别的频率集合上 传输的控制信息区域指示。 装置实施例 根据本发明的实施例， 提供了一种基站， 图 8是根据本发明实施例的一 种基站的结构框图， 如图 8所示， 该基站包括： 选择模块 82、 比较模块 84、 第一传输模块 86 , 下面对该结构进行详细说明。 选择模块 82 , 用于在多个频率重用区域中选取频率重用因子最小的频 率重用区域； 比较模块 84连接至选择模块 82 , 用于将选择模块 82选取的频 率重用区域中包含的物理单元的个数与预先设定的阈值进行比较； 第一传输
模块 86连接至比较模块 84 ,用于当物理单元的个数大于或等于上述阈值时， 在选取的频率重用区域上传输控制信息区域。 本发明实施例提供的基站中， 通过选择模块 82在多个频率重用区域中 选取频率重用因子最小的频率重用区域， 选取重用度较小的频率重用区域， 能够保证控制信息区域的传输质量， 通过比较模块 84 比较频率重用区域中 包含的物理单元的个数和预设阈值， 第一传输模块 86 在物理单元的个数大 于或等于上述阈值时传输控制信息区域， 能够提高控制信息的传输效率， 从 而提高了整个无线通信系统的性能。 根据本发明的实施例， 提供了另一种基站， 图 9是根据本发明实施例的 另一种基站的结构框图， 如图 9所示， 该基站包括： 设置模块 92、 确定模块 94、 第二传输模块 96 , 下面对该结构进行详细说明。 设置模块 92 , 用于设置频率集合配置组合与传输控制信息区域的频率 重用区域的对应关系； 确定模块 94连接至设置模块 92 , 用于确定传输控制 信息区域的频率重用区域； 第二传输模块 96连接至确定模块 94 , 用于在频 率重用区域上传输控制信息区域。 本发明实施例提供的基站中， 通过确定模块 94根据频率集合配置组合 确定与该频率集合配置组合对应的频率重用区域， 并由第二传输模块 96 在 该频率重用区域上传输控制信息区域， 能够简便地确定用于传输的频率重用 区域， 并实现传输的频率重用区域的灵活指示， 在选择了合适的频率重用区 域的情况下， 能够提高控制信息的传输效率， 从而提高了整个无线通信系统 的性能。 综上所述， 居本发明实施例所述的方法， 解决了现有技术中不能合理 高效地传输控制信息的问题， 从而可以合理高效地传输无线通信系统的控制 信息， 提高整个无线通信系统的性能。 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 ^"神和 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。
Claims
1. 一种控制信息的传输方法， 其特征在于， 包括：
基站在多个频率重用区域中选取频率重用因子最小的频率重用区 域；
将所述选取的频率重用区域中包含的物理单元的个数与预先设定 的阈值进行比较；
当所述物理单元的个数大于或等于所述阈值时，所述基站在所述选 取的频率重用区域上传输控制信息区域。
2. 根据权利要求 1所述的方法， 其特征在于， 所述基站在所述选取的频率 重用区域上传输所述控制信息区域包括：
所述基站在所述选取的频率重用区域中的部分或全部频率集合上 传输所述控制信息区域。
3. 根据权利要求 2所述的方法， 其特征在于， 所述基站在所述选取的频率 重用区域中的部分或全部频率集合上传输所述控制信息区域包括： 所述基站在所述选取的频率重用区域中的功率级别最高的频率集 合上传输所述控制信息区域。
4. 根据权利要求 2所述的方法， 其特征在于， 还包括：
所述基站根据所述功率级别最高的频率集合上传输的所述控制信 息区域， 确定所述多个频率重用区域中除所述功率级别最高的频率集合 之外的频率集合是否传输控制信息区域。
5. —种控制信息的传输方法， 其特征在于， 包括：
基站获得频率集合配置组合；
所述基站在对应关系中查找确定对应于所述频率集合配置组合的 频率重用区域；
所述基站在所述确定的频率重用区域上传输控制信息区域。
6. 根据权利要求 5所述的方法， 其特征在于， 所述基站在所述频率重用区 域上传输所述控制信息区域包括： 所述基站在所述频率重用区域中的部分或全部频率集合上传输所 述控制信息区域。 根据权利要求 6所述的方法， 其特征在于， 所述基站在所述频率重用区 域中的频率集合上传输所述控制信息区域包括：
所述基站在所述频率重用区域中的功率级别最高的频率集合上传 输所述控制信息区域。 根据权利要求 6所述的方法， 其特征在于：
所述基站根据所述功率级别最高的频率集合上传输的所述控制信 息区域确定所述多个频率重用区域中除所述功率级别最高的频率集合之 外的频率集合是否传输控制信息区域。 一种基站， 用于传输控制信息， 其特征在于， 包括：
选择模块，用于在多个频率重用区域中选取频率重用因子最小的频 率重用区域；
比较模块，用于将所述选择模块选取的频率重用区域中包含的物理 单元的个数与预先设定的阈值进行比较；
第一传输模块， 用于当所述物理单元的个数大于或等于所述阈值 时， 在所述选取的频率重用区域上传输控制信息区域。 一种基站， 用于传输控制信息， 其特征在于， 包括：
设置模块，用于设置频率集合配置组合与传输控制信息区域的频率 重用区 i或的对应关系；
确定模块，用于根据所述设置模块设置的对应关系确定传输控制信 息区域的频率重用区域；
第二传输模块， 用于在所述频率重用区域上传输所述控制信息区 域。
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| WO2001050807A1 (en) * | 1999-12-30 | 2001-07-12 | Ericsson Inc. | Channel assignment based on service type and user location in a cellular communication system with multiple frequency reuse groups |
| WO2008053429A1 (en) * | 2006-10-31 | 2008-05-08 | Koninklijke Philips Electronics N.V. | Method for transmitting data packets using different frequency reuse factors |
| CN101406080A (zh) * | 2006-03-20 | 2009-04-08 | 北电网络有限公司 | 无线通信网络中进行分数频率复用的方法和系统 |
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| GB2447635A (en) * | 2007-03-19 | 2008-09-24 | Fujitsu Ltd | Scheduling qos communications between nodes within a predetermined time unit in wimax systems |
| US8842702B2 (en) * | 2007-07-17 | 2014-09-23 | Qualcomm Incorporated | Control indications for slotted wireless communication |
| EP2204058A4 (en) * | 2007-10-16 | 2013-11-13 | Mediatek Inc | INTERFERENCE MEASURING MECHANISM FOR FREQUENCY REUSING IN CELLULAR OFDMA SYSTEMS |
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| WO2001050807A1 (en) * | 1999-12-30 | 2001-07-12 | Ericsson Inc. | Channel assignment based on service type and user location in a cellular communication system with multiple frequency reuse groups |
| CN101406080A (zh) * | 2006-03-20 | 2009-04-08 | 北电网络有限公司 | 无线通信网络中进行分数频率复用的方法和系统 |
| WO2008053429A1 (en) * | 2006-10-31 | 2008-05-08 | Koninklijke Philips Electronics N.V. | Method for transmitting data packets using different frequency reuse factors |
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