CN102256258B - Allocation method for carrier frequency resource and allocation device for carrier frequency resource - Google Patents
Allocation method for carrier frequency resource and allocation device for carrier frequency resourceDownload PDFInfo
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Abstract
Translated fromChinese
Description
Translated fromChinese技术领域technical field
本发明涉及移动通信技术领域，尤其涉及一种载频资源的分配方法及一种载频资源的分配装置。The present invention relates to the technical field of mobile communication, in particular to a carrier frequency resource allocation method and a carrier frequency resource allocation device.
背景技术Background technique
在现有TD-SCDMA通信系统中，将频域资源划分为不同的载频，选择一个载频来传送携带有小区广播信息和同步信息的主导频信号。附图1为TD-SCDMA通信系统采用三频点组网时，分配载频资源的示意图，其中f1、f2、f3分别为三个频点对应的载频，TS0至TS6分别为不同时隙，选择f1作为主载频，并选择f1中的TS0时隙来发送主导频信号。In the existing TD-SCDMA communication system, frequency domain resources are divided into different carrier frequencies, and a carrier frequency is selected to transmit the main pilot signal carrying cell broadcast information and synchronization information. Attached Figure 1 is a schematic diagram of carrier frequency resource allocation when the TD-SCDMA communication system adopts a three-frequency point network, wherein f1, f2, and f3 are respectively the carrier frequencies corresponding to the three frequency points, and TS0 to TS6 are respectively different time slots, Select f1 as the main carrier frequency, and select the TS0 time slot in f1 to send the main pilot signal.
当终端需要进行移动通信业务时，网络侧服务基站通过无线资源控制RRC(Radio Resource Control)为该终端指定用于承载该终端用户数据的辅载频的工作频点，例如指定f2或f3作为辅载频。终端获知基站指定给自己的辅载频的工作频点后在该辅载频上发送或接收数据、以及接收用于调度的控制信息，同时通过定期侦听承载在f1载频上TS0时隙中的主导频信号来来获得服务小区或目标小区的广播信息。When a terminal needs to perform mobile communication services, the serving base station on the network side specifies for the terminal the operating frequency point of the auxiliary carrier frequency used to carry the user data of the terminal through radio resource control RRC (Radio Resource Control), such as specifying f2 or f3 as the auxiliary carrier frequency carrier frequency. After knowing the working frequency of the auxiliary carrier frequency designated by the base station, the terminal sends or receives data on the auxiliary carrier frequency, and receives control information for scheduling, and at the same time carries it in the TS0 time slot on the f1 carrier frequency through periodic monitoring The main pilot signal is used to obtain the broadcast information of the serving cell or the target cell.
在2007年度世界无线电大会2007(World Radiocommunication Conference2007，WRC07)中，与会各方探讨了698-806MHz频段的划分问题。由于700MHz附近频率的无线信号具有良好的传播特性和穿透特性，因此698-806MHz频段一直是各种业务(例如广播电视业务、移动通信业务等)争夺的焦点之一。虽然中国在WRC07中支持将698-806MHz频段分配给移动通信业务相关的国际移动通信(IMT，International Mobile Telecommunications)应用，但是由于受到广播电视业务运营部门的压力，最终698-806MHz频段中可能只有很小一部分、甚至没有频段分配给移动通信业务，事实上，从时间上看，广播电视业务占用频段通常是有很强的规律性的，例如某电视台上午8点至晚上8点占用分配给该电视台的798-806MHz频段，其他12小时分配给该电视台的频段都处于空闲状态。因此很多时间中，698-806MHz频段中分配给指定业务的大部分频段都没有被充分利用。In the 2007 World Radio Conference 2007 (World Radiocommunication Conference 2007, WRC07), the participating parties discussed the allocation of the 698-806MHz frequency band. Since wireless signals at frequencies around 700MHz have good propagation and penetration characteristics, the 698-806MHz frequency band has always been one of the focuses of competition for various services (such as radio and television services, mobile communication services, etc.). Although China supported the allocation of the 698-806MHz frequency band to international mobile telecommunications (IMT, International Mobile Telecommunications) applications related to mobile communication services in WRC07, due to the pressure from the broadcasting and television business operators, there may be only a few in the 698-806MHz frequency band in the end. A small part or even no frequency band is allocated to mobile communication services. In fact, in terms of time, the frequency band occupied by radio and television services usually has a strong regularity. The 798-806MHz frequency band, and the other 12-hour frequency bands allocated to the TV station are all idle. Therefore, most of the frequency bands allocated to designated services in the 698-806MHz frequency band are not fully utilized in many times.
上述698-806MHz频段的重新划分只是一个现有实例，可以预见将会出现许多类似的原本分配给除移动通信业务之外的其他业务使用的频段被重新划分的情况。此外，也可能出现不同移动运营商间的授权业务频谱利用率差异较大的情况，例如，运营商甲用户较多，频率占用度较高，而运营商乙用户较少，频率占用度很低。基于上述类似的原因，一方面，大量频段资源都没有被充分利用；另一方面，对于移动通信业务而言，现有的频段资源在繁忙时段往往供不应求。The above re-allocation of the 698-806MHz frequency band is just an existing example, and it is foreseeable that there will be many similar re-allocation of frequency bands originally allocated to services other than mobile communication services. In addition, there may be large differences in the spectrum utilization of authorized services among different mobile operators. For example, operator A has more users and higher frequency occupancy, while operator B has fewer users and lower frequency occupancy. . For reasons similar to the above, on the one hand, a large number of frequency band resources are not fully utilized; on the other hand, for mobile communication services, the existing frequency band resources are often in short supply during busy periods.
发明内容Contents of the invention
本发明实施例提供一种载频资源的分配方法，用以在为移动终端分配载频资源时，提高无线业务的空闲频段的利用率。An embodiment of the present invention provides a method for allocating carrier frequency resources, which is used to improve the utilization rate of idle frequency bands of wireless services when allocating carrier frequency resources for mobile terminals.
对应地，本发明实施例还提供了一种载频资源的分配装置。Correspondingly, the embodiment of the present invention also provides a device for allocating carrier frequency resources.
本发明实施例提供的技术方案如下：The technical scheme that the embodiment of the present invention provides is as follows:
一种载频资源的分配方法，包括：A method for allocating carrier frequency resources, comprising:
从分配给第一通信业务的专用频段中选择载频作为第一通信业务的主载频，该主载频上承载有终端接入小区所需的信息；Selecting a carrier frequency from the dedicated frequency band allocated to the first communication service as the main carrier frequency of the first communication service, and the main carrier frequency carries information required for the terminal to access the cell;
将预定频段内除所述专用频段之外的载频作为辅载频，并依次确定各辅载频是否可用，将可用的辅载频加入备选辅载频集合；Using carrier frequencies other than the dedicated frequency band in the predetermined frequency band as auxiliary carrier frequencies, and sequentially determining whether each auxiliary carrier frequency is available, and adding the available auxiliary carrier frequencies to the set of alternative auxiliary carrier frequencies;
为基于所述主载频承载的信息进行接入的终端分配资源时，从备选辅载频集合中选择出辅载频用于承载该终端收发的数据。When allocating resources for a terminal accessing based on the information carried by the primary carrier frequency, an auxiliary carrier frequency is selected from a set of candidate auxiliary carrier frequencies to carry data sent and received by the terminal.
一种载频资源的分配装置，包括：A device for allocating carrier frequency resources, comprising:
主载频确定单元，用于从分配给第一通信业务的专用频段中选择载频作为第一通信业务的主载频，该主载频上承载有终端接入小区所需的信息；The main carrier frequency determination unit is used to select a carrier frequency from the dedicated frequency band allocated to the first communication service as the main carrier frequency of the first communication service, and the main carrier frequency carries the information required for the terminal to access the cell;
可用辅载频确定单元，用于将预定频段内除所述专用频段之外的载频作为辅载频，并依次确定各辅载频是否可用；The available auxiliary carrier frequency determination unit is used to use carrier frequencies other than the dedicated frequency band in the predetermined frequency band as auxiliary carrier frequencies, and sequentially determine whether each auxiliary carrier frequency is available;
备选辅载频集合更新单元，用于将可用辅载频确定单元确定可用的辅载频加入备选辅载频集合；An optional secondary carrier frequency set updating unit, configured to add the available secondary carrier frequencies determined by the available secondary carrier frequency determination unit to the candidate secondary carrier frequency set;
辅载频分配单元，用于为基于所述主载频承载的信息进行接入的终端分配资源时，从备选辅载频集合更新单元确定出的备选辅载频集合中选择出辅载频用于承载该终端收发的数据。An auxiliary carrier frequency allocation unit, configured to select an auxiliary carrier from the candidate auxiliary carrier frequency set determined by the candidate auxiliary carrier frequency set update unit when allocating resources for terminals accessing based on the information carried by the main carrier frequency The frequency is used to bear the data sent and received by the terminal.
本发明实施例通过从第一通信业务专用频段中选择载频作为承载终端接入小区所需信息的第一通信业务主载频；将预定频段内除所述专用频段之外的载频作为辅载频，并依次确定各辅载频是否可用，并将确定可用的辅载频加入备选辅载频集合；为基于所述小区广播信息进行接入的终端分配资源时，从备选辅载频集合中选择出辅载频承载该终端的数据，并指示所述终端利用选择出的辅载频收发数据，一方面通过将主载频设置在第一通信业务专用频段中避免了大量已接入终端通信中断的问题，节省了小区删除、小区重建占用的时间，另一方面拓宽了辅载频的选择范围，有效地利用了其他无线业务的空闲频段。In the embodiment of the present invention, the carrier frequency is selected from the dedicated frequency band for the first communication service as the main carrier frequency of the first communication service carrying the information required by the terminal to access the cell; the carrier frequency in the predetermined frequency band except the dedicated frequency band is used as the secondary Carrier frequency, and sequentially determine whether each auxiliary carrier frequency is available, and add the determined available auxiliary carrier frequency to the set of candidate auxiliary carrier frequencies; when allocating resources for terminals that access based on the cell broadcast information, select Select an auxiliary carrier frequency from the frequency set to carry the data of the terminal, and instruct the terminal to use the selected auxiliary carrier frequency to send and receive data. On the one hand, setting the main carrier frequency in the first communication service dedicated frequency band avoids a large number of received Incoming terminal communication interruption problem saves the time occupied by cell deletion and cell reconstruction. On the other hand, it broadens the selection range of auxiliary carrier frequency and effectively utilizes the idle frequency band of other wireless services.
附图说明Description of drawings
图1为现有技术中载频资源分配情况的示意图；FIG. 1 is a schematic diagram of carrier frequency resource allocation in the prior art;
图2为本发明实施例的主要实现原理流程图；Fig. 2 is the flow chart of the main realization principle of the embodiment of the present invention;
图3为本发明实施例一中载频资源分配情况的示意图；FIG. 3 is a schematic diagram of carrier frequency resource allocation in Embodiment 1 of the present invention;
图4为本发明实施例中载频资源分配过程的流程示意图；FIG. 4 is a schematic flowchart of a carrier frequency resource allocation process in an embodiment of the present invention;
图5为本发明实施例二中载频资源分配情况的示意图；FIG. 5 is a schematic diagram of carrier frequency resource allocation in Embodiment 2 of the present invention;
图6为本发明实施例提供的载频分配装置的结构示意图；FIG. 6 is a schematic structural diagram of a carrier frequency allocation device provided by an embodiment of the present invention;
图7为本发明实施例提供的另一种载频分配装置的结构示意图。Fig. 7 is a schematic structural diagram of another carrier frequency allocation device provided by an embodiment of the present invention.
具体实施方式Detailed ways
发明人注意到许多特定业务，例如广播电视业务，使用的专用频段，从使用时间上看具有很强的规律性，并且使用状态变化的周期都较长，例如每隔几个小时才改变一次使用状态，这导致在广播电视业务未使用专用频段的时间段内，广播电视业务的专用频段都被闲置而没有获得有效利用。而另一方面，其他业务，例如移动通信业务在繁忙时段经常会出现分配给移动通信业务的专用频段供不应求的情况。基于此，发明人希望能利用广播电视业务等其他无线业务的空闲时的专用频段来为移动通信业务服务。The inventor noticed that the dedicated frequency bands used by many specific services, such as radio and television services, have strong regularity in terms of usage time, and the cycle of usage status changes is long, for example, the usage status is changed only every few hours. State, which leads to the dedicated frequency bands for broadcasting and television services being idle and not effectively utilized during the time period when broadcasting and television services do not use the dedicated frequency bands. On the other hand, for other services, such as mobile communication services, there is often a situation in which the dedicated frequency bands allocated to mobile communication services are in short supply during busy periods. Based on this, the inventor hopes to use the dedicated frequency band of other wireless services such as radio and television services to serve mobile communication services.
在这种广播电视业务空闲时、或预定频段的分配结果不明朗的现状下，直接引入现有TD-SCDMA通信系统中频率资源的配置方案是不合理的，原因如下：It is unreasonable to directly introduce the configuration scheme of frequency resources in the existing TD-SCDMA communication system when the radio and television services are idle or the result of the allocation of predetermined frequency bands is not clear. The reasons are as follows:
如果为了利用698-806MHz频段传播特性和穿透特性较好的优势，分配698-806MHz频段内的载频作为主载频来承载主导频信号，一旦后续该主载频被广播电视业务重新使用，基于该导频信号进行通信的所有终端的移动通信业务都将中断，服务基站为此改换频率，将进行小区删除和小区重建处理至少需要几分钟时间，在此期间用户无法使用移动通信业务；如果分配698-806MHz频段外、且移动通信业务专用频段内载频作为的主载频来承载主导频信号、而分配698-806MHz频段内的载频作为辅载频来承载某一用户的数据、调度信息和控制信息，假如698-806MHz频段内的辅载频后续被广播电视业务重新使用，那么该用户的移动通信业务也会中断。If the carrier frequency in the 698-806MHz frequency band is assigned as the main carrier frequency to carry the main pilot signal in order to take advantage of the advantages of better propagation characteristics and penetration characteristics in the 698-806MHz frequency band, once the main carrier frequency is subsequently reused by the broadcast and television services, The mobile communication services of all terminals that communicate based on the pilot signal will be interrupted, and the serving base station will change the frequency for this, and it will take at least a few minutes to perform cell deletion and cell reconstruction. During this period, users cannot use mobile communication services; if Allocate the carrier frequency outside the 698-806MHz frequency band and within the dedicated frequency band for mobile communication services as the main carrier frequency to carry the main pilot signal, and allocate the carrier frequency in the 698-806MHz frequency band as the auxiliary carrier frequency to carry the data and scheduling of a certain user For information and control information, if the auxiliary carrier frequency in the 698-806MHz frequency band is subsequently reused by broadcast and television services, the user's mobile communication services will also be interrupted.
本发明实施例提出选取移动通信业务分配的专用频段中的载频作为主载频来发送小区广播信息和同步信息以保证主载频的可靠性；同时利用无线电感知技术定期检测除主载频的频点外的其他频点对应每个辅载频(包括未分配给移动通信业务的频段内的辅载频)是否可用，若是将该可用载频加入备选辅载频集合中，否则从备选辅载频集合中删除该不可用载频，从而定期地更新备选辅载频集合，以此来拓宽辅载频的选择范围。The embodiment of the present invention proposes to select the carrier frequency in the dedicated frequency band assigned by the mobile communication service as the main carrier frequency to send cell broadcast information and synchronization information to ensure the reliability of the main carrier frequency; Other frequency points outside the frequency point correspond to whether each auxiliary carrier frequency (including the auxiliary carrier frequency in the frequency band not allocated to the mobile communication service) is available, if the available carrier frequency is added to the set of candidate auxiliary carrier frequencies, otherwise The unusable carrier frequency is deleted from the selected auxiliary carrier frequency set, so as to periodically update the candidate auxiliary carrier frequency set, so as to broaden the selection range of the auxiliary carrier frequency.
一方面，在为接入终端分配资源时，从备选辅载频集合中选择辅载频来承载该终端的数据业务。另一方面，在利用无线电感知技术定期检测出一个辅载频不可用、且辅载频已承载有终端的数据时，从备选辅载频集合中选择辅载频来代替该不可用辅载频来承载终端的数据。为利用未分配给移动通信业务的频段内的空闲辅载频实现移动通信业务提出了可行的解决方案。On the one hand, when allocating resources for an access terminal, a secondary carrier frequency is selected from a set of candidate secondary carrier frequencies to bear the data service of the terminal. On the other hand, when the radio sensing technology is used to periodically detect that an auxiliary carrier frequency is unavailable, and the auxiliary carrier frequency already carries the data of the terminal, the auxiliary carrier frequency is selected from the candidate auxiliary carrier frequency set to replace the unavailable auxiliary carrier frequency. Frequency to carry the data of the terminal. A feasible solution is put forward for realizing mobile communication service by using idle auxiliary carrier frequency in the frequency band not assigned to mobile communication service.
下面结合各个附图对本发明实施例技术方案的主要实现原理、具体实施方式及其对应能够达到的有益效果进行详细的阐述。The main realization principles, specific implementation modes and corresponding beneficial effects that can be achieved of the technical solutions of the embodiments of the present invention will be described in detail below in conjunction with each accompanying drawing.
如图2所示，本发明实施例的主要实现原理流程如下：As shown in Figure 2, the main implementation principle flow of the embodiment of the present invention is as follows:
步骤10，从分配给第一通信业务的专用频段中选择至少一个载频作为第一通信业务的主载频，并在主载频上承载小区广播信息等终端接入小区所需的信息；
步骤20，将预定频段中除所述专用频段之外的载频作为辅载频，并依次确定各辅载频是否可用，将确定可用的辅载频加入可承载数据的备选辅载频集合，该预定频段包括第一通信业务之外的第二通信业务使用的频段、或未分配的频段，例如，从通信业务的类型层次来说，如果第一通信业务为移动通信业务，那么第二通信业务可以为广播电视业务、或卫星数据业务等，从运营商层次来说，如果第一通信业务为第一运营商的移动通信业务，第二通信业务可以为第二运营商的移动通信业务等；
步骤30，为基于步骤10中主载频承载的信息进行接入的终端分配资源时，从步骤20确定出的备选辅载频集合中选择出辅载频承载该终端的数据，所述终端根据主载频或选择出的辅载频上承载的控制信息的指示，在选择出的辅载频的资源位置上收发数据。Step 30, when allocating resources for a terminal that accesses based on the information carried by the primary carrier frequency in
下面将依据本发明上述发明原理，详细介绍三个实施例来对本发明方法的主要实现原理进行详细的阐述和说明。In the following, based on the above-mentioned inventive principles of the present invention, three embodiments will be introduced in detail to elaborate and illustrate the main realization principles of the method of the present invention.
实施例一Embodiment one
移动通信系统支持的指定频段(例如698-806MHz频段)中的部分频点的载频被分配给移动通信业务使用，其他频点的载频被分配给广播电视业务使用，如附图3所示，f1至f7表示指定频段内的各个载频，其中f6、f7为分配给移动通信业务专用的载频，f1至f4为分配给广播电视业务使用的载频、f5为未分配的载频。The carrier frequencies of some frequency points in the specified frequency band supported by the mobile communication system (such as the 698-806MHz frequency band) are allocated to mobile communication services, and the carrier frequencies of other frequency points are allocated to broadcast television services, as shown in Figure 3 , f1 to f7 represent each carrier frequency in the designated frequency band, among which f6 and f7 are dedicated carrier frequencies allocated to mobile communication services, f1 to f4 are carrier frequencies allocated to broadcast and television services, and f5 is an unallocated carrier frequency.
移动通信系统中的基站设备等接入设备的资源分配过程如附图4所示。The resource allocation process of access equipment such as base station equipment in the mobile communication system is shown in FIG. 4 .
步骤401，基站将f6配置为主载频(主载频也可以为多个)，在主载频上承载小区广播信息；
步骤402，基站将f1至f5配置为辅载频，并利用感知无线电技术依次判断各辅载频(f1至f5)是否可用，若是进入步骤403，否则进入步骤404；
步骤403，基站将确定为可用的辅载频加入备选辅载频集合(也可称之为资源池)中，例如在本实施例中f4、f5为可用辅载频，则将f4、f5加入备选辅载频集合C中，其中C＝{f4、f5}；In
较佳地，实际处理时，可以保存一个备选辅载频的标识的集合C′，确定出辅载频f4、f5为可用辅载频后，将f4、f5的标识加入C′中。Preferably, during actual processing, a set C' of identifiers of candidate auxiliary carrier frequencies may be saved, and after determining that auxiliary carrier frequencies f4 and f5 are available auxiliary carrier frequencies, the identifiers of f4 and f5 are added to C'.
步骤404，基站判断步骤402中确定不可用的辅载频是否已承载有终端A的数据(在本实施例中f1、f2和f3为不可用辅载频，f2已承载终端A的数据)，若是则进入步骤405，否则进入步骤406；
步骤405，基站从备选辅载频集合中选择辅载频来代替f2承载终端A的数据，例如选择f4来继续承载终端A的数据，并通过承载在f6、f2、f4或其它可用辅载频上的控制信息调度终端A在f4上进行通信，由于广播信息始终承载在f6上，辅载频的可用性发生改变时，不需要进行小区删除和小区重建。当然采用这种调度方式时，终端A应为可支持载频聚合技术的终端设备；
步骤406，基站判断确定不可用的辅载频是否已包含在备选辅载频集合中时，若是，进入步骤407；否则禁止将该确定为不可用的辅载频加入备选辅载频集合；In step 406, the base station judges whether the unavailable auxiliary carrier frequency has been included in the candidate auxiliary carrier frequency set, and if so, proceeds to step 407; otherwise, it is prohibited to add the unavailable auxiliary carrier frequency to the candidate auxiliary carrier frequency set ;
步骤407，基站从备选辅载频集合中删除该确定不可用的辅载频；
假定f1包含在备选辅载频集合中，实际处理时，可以从备选辅载频的标识的集合C′中删除f1标识；Assuming that f1 is included in the set of candidate secondary carrier frequencies, during actual processing, the f1 identifier can be deleted from the set C′ of candidate secondary carrier frequency identifiers;
步骤408，基站接收到接入该基站覆盖区域的终端B发送的呼叫请求或者切换请求后，为终端B分配载频资源时，从备选辅载频集合中选择辅载频来承载终端B的数据，例如从备选辅载频集合C中选择f5来承载终端B的数据，终端B从而可以根据在f6或其它可用辅载频上承载的控制信息，在f5对应资源位置收发数据。Step 408: After the base station receives the call request or handover request sent by the terminal B accessing the coverage area of the base station, when allocating carrier frequency resources for the terminal B, it selects an auxiliary carrier frequency from the candidate auxiliary carrier frequency set to carry the terminal B's For data, for example, f5 is selected from the candidate secondary carrier frequency set C to carry the data of terminal B, so that terminal B can send and receive data at the corresponding resource location of f5 according to the control information carried on f6 or other available secondary carrier frequencies.
需要说明的是，仅执行上述步骤401、步骤402、步骤403、步骤408就可以实现利用为其他业务分配的频段来实现移动通信业务的目的，其他步骤能够实现在此基础上更佳的技术效果，例如保证用户较好的通信质量等。It should be noted that only by performing the
较佳地，在上述步骤408中，在备选辅载频集合中没有可用辅载频时，还可以分配主载频中的空闲资源位置(即除小区广播信息占用的资源位置之外的资源位置)来承载终端B的数据。Preferably, in the
较佳地，在上述步骤401中确定出的主载频上还可以承载用于辅助终端搜索小区的同步信息，终端可以在同步信息的帮助下，基于小区广播信息更快地接入小区。Preferably, the main carrier frequency determined in the
较佳地，在上述步骤402中利用感知无线电技术依次判断每个辅载频是否可用时，可以采用包括但不限于以下方式中的一种方式：Preferably, when the cognitive radio technology is used to sequentially determine whether each auxiliary carrier frequency is available in the
方式1：在该辅载频上检测到的干扰信号的功率低于第一预定阈值时，确定该辅载频可用，否则确定该辅载频不可用；Mode 1: When the power of the interference signal detected on the auxiliary carrier frequency is lower than a first predetermined threshold, determine that the auxiliary carrier frequency is available, otherwise determine that the auxiliary carrier frequency is unavailable;
方式2：在此前预定时间段内在该辅载频上检测到的信道质量指示参数值高于预定阈值时，确定该辅载频可用，否则确定该辅载频不可用；Mode 2: When the channel quality indication parameter value detected on the auxiliary carrier frequency is higher than a predetermined threshold within the previous predetermined period of time, determine that the auxiliary carrier frequency is available, otherwise determine that the auxiliary carrier frequency is unavailable;
方式3：在f1-f5中包括分配给其他业务使用的载频时，确定在该辅载频上检测到的主业务信号的电平低于预定阈值时，确定该辅载频可用，否则确定该辅载频不可用；其中，主业务为在该载频上获得授权(即该辅载频为主业务的专用频点)的无线业务，在利用感知无线电使用该辅载频时不应干扰主业务。主业务包含移动通信业务，也包含除移动通信业务之外的其他业务，如广播电视业务、卫星数据业务等，对于多个运营商都支持移动通信业务的情况，主业务包含各个运营商支持的移动通信业务。Method 3: When f1-f5 includes carrier frequencies allocated to other services, determine that the auxiliary carrier frequency is available when the level of the main service signal detected on the auxiliary carrier frequency is lower than a predetermined threshold, otherwise determine The auxiliary carrier frequency is unavailable; where the main service is a wireless service authorized on the carrier frequency (that is, the auxiliary carrier frequency is a dedicated frequency point for the main service), and the auxiliary carrier frequency should not be interfered when using the auxiliary carrier frequency by cognitive radio main business. The main business includes mobile communication services, as well as other services other than mobile communication services, such as radio and television services, satellite data services, etc. For the case where multiple operators support mobile communication services, the main business includes mobile communication services supported by each operator. communication business.
方式1、方式2或方式3的任意组合。Any combination of mode 1, mode 2 or mode 3.
采用上述方式1、方式2或方式3时，将一个辅载频确定为可用辅载频的条件较低，因而备选辅载频集合中的可用辅载频数目较多，然而从备选辅载频集合中选择出辅载频来承载终端数据时，终端有可能使用移动通信业务的质量较差，例如通话质量较差；相反，采用上述三种方式的组合作为判断辅载频是否可用的依据时，将一个辅载频确定为可用辅载频的条件较高，因而备选辅载频集合中的可用辅载频数目较少，从备选辅载频集合中选择出辅载频来承载终端数据时，终端使用移动通信业务的质量较好。When using the above method 1, method 2 or method 3, the conditions for determining an auxiliary carrier frequency as an available auxiliary carrier frequency are relatively low, so the number of available auxiliary carrier frequencies in the candidate auxiliary carrier When an auxiliary carrier frequency is selected from the carrier frequency set to carry terminal data, the quality of mobile communication services used by the terminal may be poor, such as poor call quality; on the contrary, a combination of the above three methods is used to determine whether the auxiliary carrier frequency is available When the basis is used, the conditions for determining an auxiliary carrier frequency as an available auxiliary carrier frequency are relatively high, so the number of available auxiliary carrier frequencies in the candidate auxiliary carrier frequency set is relatively small, and the auxiliary carrier frequency is selected from the candidate auxiliary carrier frequency set. When carrying terminal data, the quality of mobile communication services used by the terminal is better.
当然，上述方式1、方式2或方式3只是示例性的说明，还可以用其他判断方式来确定辅载频是否可用。Certainly, the foregoing manner 1, manner 2 or manner 3 is only an exemplary description, and other judgment manners may also be used to determine whether the auxiliary carrier frequency is available.
较佳地，考虑到除了移动通信业务之外的主业务(如广播电视业务、卫星数据业务等)会不定期地使用辅载频f1～f5，上述步骤402～步骤406中的各步骤是以预定的定时时长周期性执行的，以防止移动通信业务干扰到其他业务的正常通信，也可有效避免其他业务开始使用已承载用户数据的载频时对用户使用移动通信业务造成影响。Preferably, considering that main services other than mobile communication services (such as broadcast TV services, satellite data services, etc.) will use auxiliary carrier frequencies f1-f5 irregularly, each step in the
较佳的，主载频不仅可以承载小区广播信息，还可以承载用于调度的控制信息，在上述步骤405或步骤406中，通过主载频中的控制信息，例如资源调度信息调度终端A使用f4承载数据，调度终端B使用f5承载数据。用主载频承载控制信息的优点在于即使在步骤405中终端A原来使用的f2被广播电视业务、卫星数据业务等除了移动通信业务之外的其他业务占用的情况下，可以很快地通过主载频调度终端A使用其他辅载频承载数据。当然，用于调度的控制信息也可以像现有技术一样承载在辅载频中，与将控制信息承载在主载频的方案相比，在承载数据的辅载频被其他业务占用时，终端需要进行盲检测，复杂度较高、所需的时间略长，但可以节省主载频上的资源开销，当激活用户较多时，可以有效分担主载频的负载压力。上述两种承载控制信息的方案均可以节省直接应用现有TD-SCDMA通信系统中的资源分配方案的情况下，将分配给广播电视业务的频段中的载频设置为主载频，主载频被广播电视业务重新占用时小区删除和重建占用的时间。对于基站等接入设备而言，可以有选择地将第一终端的控制信息承载在主载频上，将第二终端的控制信息承载在为第二终端分配的辅载频上。Preferably, the main carrier frequency can not only carry cell broadcast information, but also can carry control information for scheduling. In the
实施例二Embodiment two
移动通信系统支持的两个指定频段，如附图5中的频段A和频段B，频段A为分配给卫星数据业务使用的频段、频段B为698-806MHz频段。其中频段A中有5个频点的载频，频段B中有3个频点的载频，其中载频f8为分配给移动通信业务专用的载频，f6、f7为分配给广播电视业务使用的载频。The two designated frequency bands supported by the mobile communication system, such as frequency band A and frequency band B in Figure 5, frequency band A is the frequency band allocated to satellite data services, and frequency band B is the 698-806MHz frequency band. Among them, there are 5 carrier frequencies in frequency band A, and 3 carrier frequencies in frequency band B. Among them, carrier frequency f8 is dedicated to mobile communication services, and f6 and f7 are allocated to radio and television services. carrier frequency.
基站设备在进行资源分配时，仍可以采用附图4所示的分配流程。将f8作为承载小区广播信息等小区接入信息的主载频，在本实施例中利用无线电感知技术，确定f1、f2、f3、f6、f7为不可用辅载频，f4、f5为可用辅载频，将f4、f5加入备选辅载频集合中，从备选辅载频集合中选择辅载频调度给发出呼叫请求或者切换请求等资源分配请求的终端、或原本利用f1、f2、f3、f6或f7承载数据的终端用来承载数据。When the base station equipment allocates resources, it can still use the allocation process shown in FIG. 4 . Taking f8 as the main carrier frequency carrying cell access information such as cell broadcast information, in this embodiment, radio sensing technology is used to determine that f1, f2, f3, f6, and f7 are unavailable auxiliary carrier frequencies, and f4 and f5 are available auxiliary carrier frequencies. Carrier frequency, add f4 and f5 to the candidate auxiliary carrier frequency set, select the auxiliary carrier frequency from the candidate auxiliary carrier frequency set to dispatch to the terminal that sends the resource allocation request such as call request or handover request, or originally uses f1, f2, The terminal f3, f6 or f7 carrying data is used to carry data.
实施例三Embodiment three
实施例一、实施例二中给出的方案适用于时分双工(TDD，Time DivisionDuplex)系统，实际上除了TDD系统之外，实施例一、实施例二中的方案亦可支持频繁双工(FDD，Frequency Division Duplex)系统，区别之处在于需要将备选辅载频集合中的可用辅载频进行配对使用。The scheme that provides in embodiment one, embodiment two is applicable to time division duplex (TDD, Time DivisionDuplex) system, in fact except TDD system, the scheme in embodiment one, embodiment two also can support frequent duplex ( FDD (Frequency Division Duplex) system, the difference is that the available secondary carrier frequencies in the candidate secondary carrier frequency set need to be paired for use.
例如，移动通信系统支持的一个指定频段，如附图3，频段中有6个频点的载频，其中载频f6为分配给移动通信业务专用的载频，f1至f5为分配给其他业务使用的载频。For example, a designated frequency band supported by the mobile communication system, as shown in Figure 3, has 6 carrier frequencies in the frequency band, where carrier frequency f6 is dedicated to mobile communication services, and f1 to f5 are allocated to other services The carrier frequency used.
基站设备在进行资源分配时，仍可以采用附图4所示的分配流程。在本实施例中利用无线电感知技术，确定f2、f3、f4为不可用辅载频，f1、f5为可用辅载频，将f1、f5加入备选辅载频集合中，并配对分别作为FDD方式下的移动终端的上下行载频使用。与实施例一不同之处是系统在调度资源时，将根据数据的发送方选择辅载频承载。例如，选择f1承载移动终端发送的上行数据，选择f5承载基站发送的下行数据。为了避免上下行数据之间的干扰，在备选辅载频集合中有多个可用辅载频可供选择时，可以选择对应频点相隔较远的辅载频来承载同一个移动终端的上下行数据；或者根据终端在该频段上的双工间隔选择配对频率；此外，可以根据业务需求为终端配置不等数目的上下行辅载频。When the base station equipment allocates resources, it can still use the allocation process shown in FIG. 4 . In this embodiment, radio sensing technology is used to determine that f2, f3, and f4 are unusable auxiliary carrier frequencies, f1 and f5 are available auxiliary carrier frequencies, and f1 and f5 are added to the set of alternative auxiliary carrier frequencies, and paired as FDD Uplink and downlink carrier frequency usage of mobile terminals in this mode. The difference from Embodiment 1 is that when the system schedules resources, it will select the secondary carrier frequency bearer according to the sender of the data. For example, f1 is selected to carry uplink data sent by the mobile terminal, and f5 is selected to carry downlink data sent by the base station. In order to avoid interference between uplink and downlink data, when there are multiple available auxiliary carrier frequencies to choose from in the candidate auxiliary carrier frequency set, the auxiliary carrier frequency with the corresponding frequency points far apart can be selected to carry the uplink and downlink data of the same mobile terminal. Uplink data; or select a paired frequency according to the duplex interval of the terminal on the frequency band; in addition, different numbers of uplink and downlink auxiliary carrier frequencies can be configured for the terminal according to business requirements.
上述三个实施例提供的频域资源的分配方法也可以与现有时频资源分配方法相结合，优先地从移动通信业务的专用频段中除主载频之外的其他辅载频中为终端分配辅载频，在移动通信业务的专用频段中的辅载频已用完后，从备选辅载频中为终端分配辅载频，从而可以有效地提高移动通信系统的容量。The frequency-domain resource allocation methods provided by the above three embodiments can also be combined with the existing time-frequency resource allocation methods, and the terminal is allocated preferentially from other secondary carrier frequencies in the dedicated frequency band for mobile communication services except the main carrier frequency. Auxiliary carrier frequency: After the auxiliary carrier frequency in the dedicated frequency band of mobile communication service is used up, the auxiliary carrier frequency is allocated to the terminal from the alternative auxiliary carrier frequency, so that the capacity of the mobile communication system can be effectively improved.
本发明实施例从分配给移动通信业务的专用频段中选择一个载频作为主载频来承载小区广播信息和同步信息，以保证主载频的可靠性，避免将主载频设置在其他业务使用的频段上，其他业务重新占用该频段后，小区删除和重建占用较多时间造成的用户无法使用移动通信业务的问题；利用感知无线电技术依次确定其他频点上的辅载频是否可用，从可用辅载频中为新接入的终端、或者使用不可用辅载频承载数据的终端重新分配辅载频，充分利用了广播电视业务等其他业务间歇性使用专用频段的特点，在分配给其他业务(其他业务是指除了移动通信业务之外的广播电视业务、卫星数据业务等，对于多个运营商都支持移动通信业务的情况，在为第一运营商的移动通信业务分配资源时，其他业务还包括除第一运营商之外的其他运营商的移动通信业务)的频段空闲时承载移动通信业务中的数据，拓宽了辅载频的选择范围，一方面有效地提高了有限的频段的使用效率，另一方面有利于扩大移动通信系统的容量。In the embodiment of the present invention, a carrier frequency is selected from the dedicated frequency band allocated to mobile communication services as the main carrier frequency to carry cell broadcast information and synchronization information, so as to ensure the reliability of the main carrier frequency and avoid setting the main carrier frequency for other services. On the frequency band, after other services re-occupy the frequency band, the deletion and reconstruction of the cell will take a long time to cause the problem that the user cannot use the mobile communication service; use the cognitive radio technology to sequentially determine whether the auxiliary carrier frequency on other frequency points is available, and start from the available The auxiliary carrier frequency is re-assigned to the newly accessed terminal or the terminal that uses the unavailable auxiliary carrier frequency to carry data. It makes full use of the characteristics of other services such as radio and television services that use the dedicated frequency band intermittently. (Other services refer to radio and television services, satellite data services, etc. other than mobile communication services. For the case where multiple operators support mobile communication services, when allocating resources for the mobile communication services of the first operator, other services shall also be included. Including the mobile communication services of other operators except the first operator) when the frequency band is idle, the data in the mobile communication service is carried, which broadens the selection range of the auxiliary carrier frequency, and effectively improves the use efficiency of the limited frequency band on the one hand , On the other hand, it is beneficial to expand the capacity of the mobile communication system.
相应地，本发明实施例还提供了一种载频资源的分配装置，如图6所示，该装置包括主载频确定单元601、可用辅载频确定单元602、备选辅载频集合更新单元603和辅载频分配单元604，具体如下：Correspondingly, the embodiment of the present invention also provides a device for allocating carrier frequency resources. As shown in FIG. The
主载频确定单元601，用于从分配给第一通信业务的专用频段中选择载频作为第一通信业务的主载频，该主载频上承载有终端接入小区所需的信息；The main carrier
可用辅载频确定单元602，用于将预定频段内除所述专用频段之外的载频作为辅载频，并依次确定各辅载频是否可用；The available auxiliary carrier
备选辅载频集合更新单元603，用于将可用辅载频确定单元确定可用的辅载频加入备选辅载频集合；An optional secondary carrier frequency set updating
辅载频分配单元604，用于为基于所述主载频承载的信息进行接入的终端分配资源时，从备选辅载频集合更新单元603确定出的备选辅载频集合中选择出辅载频用于承载该终端收发的数据。The secondary carrier
较佳地附图6中的可用辅载频确定单元602周期性地确定各辅载频是否可用，并触发备选辅载频集合更新单元将可用辅载频加入备选辅载频集合。Preferably, the available auxiliary carrier
较佳地，请参照附图7，在可用辅载频确定单元602周期性地确定各辅载频是否可用时，附图6中的载频资源的分配装置还进一步包括调度单元701，用于在可用辅载频确定单元602确定出辅载频分配单元604已选择的用于承载所述终端收发的数据的辅载频不可用时，从备选辅载频集合中选择其他辅载频来承载该终端收发的数据。Preferably, referring to FIG. 7, when the available auxiliary carrier
较佳地，附图6或附图7中的载频资源的分配装置中的备选辅载频集合更新单元，还用于在在所述可用辅载频确定单元确定辅载频为不可用辅载频、且备选辅载频集合中包含该不可用辅载频时，从备选辅载频集合中删除该不可用辅载频。Preferably, the alternative auxiliary carrier frequency set update unit in the carrier frequency resource allocation device in Figure 6 or Figure 7 is also used to determine that the auxiliary carrier frequency is unavailable in the available auxiliary carrier frequency determination unit When the secondary carrier frequency is included in the set of candidate secondary carrier frequencies and the unavailable secondary carrier frequency is included, the unavailable secondary carrier frequency is deleted from the set of candidate secondary carrier frequencies.
本领域普通技术人员可以理解实现上述实施例方法中的全部或部分步骤是可以通过程序来指令相关的硬件来完成，该程序可以存储于一计算机可读取存储介质中，如：ROM/RAM、磁碟、光盘等。Those of ordinary skill in the art can understand that all or part of the steps in the method of the above-mentioned embodiments can be completed by instructing related hardware through a program, and the program can be stored in a computer-readable storage medium, such as: ROM/RAM, Diskettes, CDs, etc.
显然，本领域的技术人员可以对本发明进行各种改动和变型而不脱离本发明的精神和范围。这样，倘若本发明的这些修改和变型属于本发明权利要求及其等同技术的范围之内，则本发明也意图包含这些改动和变型在内。Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention also intends to include these modifications and variations.
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| CN105517137A (en)* | 2014-09-26 | 2016-04-20 | 株式会社日立制作所 | Base station used for executing downlink power distribution adjustment and method thereof |
| CN105992345A (en) | 2015-01-27 | 2016-10-05 | 中兴通讯股份有限公司 | Method and device for using unlicensed carrier resource |
| CN105142223B (en)* | 2015-08-17 | 2020-09-25 | 联想(北京)有限公司 | Data transmission method and electronic equipment |
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