技术领域technical field
本发明涉及通信技术领域。具体而言，涉及一种多频网络中功率降额的方法和装置。The invention relates to the technical field of communication. Specifically, it relates to a method and device for power derating in a multi-frequency network.
背景技术Background technique
随着移动通信网络用户数量的迅速增长，网络不断扩容，部分地区已出现频段资源紧张、话务密度过大等现象。网络容量的需求急剧增加，频率资源的有限性和无线信道容量的不足已经成为网络发展的重要瓶颈，于是引入了多频网技术。多频网技术是指同一移动网采用不同的无线频段，并让不同的频段合理地进行业务分担。目前多频网的主要应用是GSM900与DCS1800系统构成的时分多址接入(TDMA)数字移动网、UMTS R99与下行高速分组接入(HSDPA)系统构成的网络等。双频网络是多频网技术的一种，也是多频网技术中应用最为广泛的技术之一。With the rapid increase in the number of mobile communication network users and the continuous expansion of the network, some areas have experienced shortages of frequency band resources and excessive traffic density. The demand for network capacity has increased sharply, and the limited frequency resources and insufficient wireless channel capacity have become important bottlenecks in network development, so the multi-frequency network technology has been introduced. Multi-frequency network technology means that the same mobile network uses different wireless frequency bands, and allows different frequency bands to reasonably share services. At present, the main application of multi-frequency network is the time division multiple access (TDMA) digital mobile network composed of GSM900 and DCS1800 system, the network composed of UMTS R99 and downlink high-speed packet access (HSDPA) system, etc. Dual-frequency network is a kind of multi-frequency network technology, and it is also one of the most widely used technologies in multi-frequency network technology.
图1示出了在双频网络中两个异频同覆盖小区F1、F2的示意图，其中为了说明起见，将两个同覆盖小区分别示出。用户可以在两小区F1、F2之间进行小区选择、重选和切换。双频网络的基于两个频段的小区可以独立进行频率规划，有着不同的频谱范围，不同的无线传播规律，不同的覆盖范围等，而在组网方式上，不需要改变原有网络的整体结构，不同的小区的设备资源可以共享，同时根据容量的需求及话务分布情况，还可以逐步引入多个异频小区。Fig. 1 shows a schematic diagram of two different-frequency and same-coverage cells F1 and F2 in a dual-frequency network, wherein for the sake of illustration, the two same-coverage cells are shown separately. Users can perform cell selection, reselection and switching between the two cells F1 and F2. Cells based on two frequency bands in a dual-frequency network can carry out frequency planning independently, with different spectrum ranges, different wireless propagation rules, and different coverage areas. In terms of networking methods, there is no need to change the overall structure of the original network , the equipment resources of different cells can be shared, and at the same time, according to capacity requirements and traffic distribution, multiple different-frequency cells can be gradually introduced.
在多频网络中，通常有一个小区主要用于保证覆盖面积，称为覆盖站，其他的用于提高容量的小区称为容量站。容量站主要用于提高系统容量。在现有的通用移动通信系统(UMTS)网络中，UMTS R99与HSDPA系统构成的双频网络是一种典型的双频网络；多频网络占UMTS网络的90％，其中最主要的是双频网络占40％～50％，其次是三频网络、四频网络等。其中，UMTS R99中心频点为2100MHz，主要作为覆盖站，满足覆盖要求，而HSDPA系统主要作为容量站，其中心频点可为2100MHz或者900MHz，主要用于提高系统容量。In a multi-frequency network, usually a cell is mainly used to ensure the coverage area, which is called a coverage station, and other cells used to increase capacity are called capacity stations. Capacity stations are mainly used to increase system capacity. In the existing Universal Mobile Telecommunications System (UMTS) network, the dual-frequency network composed of UMTS R99 and HSDPA system is a typical dual-frequency network; the multi-frequency network accounts for 90% of the UMTS network, the most important of which is the dual-frequency network. Network accounts for 40% to 50%, followed by tri-band network and quad-band network. Among them, the center frequency of UMTS R99 is 2100MHz, which is mainly used as a coverage station to meet the coverage requirements, while the HSDPA system is mainly used as a capacity station, and its center frequency can be 2100MHz or 900MHz, which is mainly used to increase system capacity.
图2示出了现有网络的典型场景下基站的业务量分布情况。可见，大约有50％的基站业务量在5％以下，即业务量极低，近40％的站点业务量在45％以下，即业务量为中等。也就是说，绝大多数基站的负载并不是很高。Fig. 2 shows traffic distribution of base stations in a typical scenario of an existing network. It can be seen that about 50% of the base stations have a traffic volume below 5%, that is, the traffic volume is extremely low, and nearly 40% of the base stations have a traffic volume below 45%, that is, the traffic volume is medium. That is to say, the load of most base stations is not very high.
当业务量极低时，可以采用现有技术中的智能载波关断技术来节能。然而，当业务量为中等时，目前还没有相关的节能机制，从而基站总是保持较高的发射功率，能耗较大。When the traffic volume is extremely low, the intelligent carrier cut-off technology in the prior art can be used to save energy. However, when the traffic is moderate, there is no relevant energy-saving mechanism at present, so the base station always maintains a high transmission power and consumes a lot of energy.
发明内容Contents of the invention
本发明实施例中提供了一种多频网络中功率降额的方法和装置。Embodiments of the present invention provide a method and device for derating power in a multi-frequency network.
根据一个方面，提出了一种多频网络中进行功率降额的方法，包括：获取覆盖站小区的第一负载量和容量站小区的第二负载量，并基于所述第一负载量和第二负载量根据预先确定的判断准则确定容量站小区的发射功率变化要求；根据所述容量站小区的发射功率变化要求利用业务处理方式对用户业务进行处理；以及根据所述容量站小区的发射功率变化要求对容量站小区的发射功率进行处理。According to one aspect, a method for power derating in a multi-frequency network is proposed, including: obtaining a first load amount of a coverage station cell and a second load amount of a capacity station cell, and based on the first load amount and the second load amount 2. Determine the transmission power change requirements of the capacity station cell according to the predetermined judgment criteria; process the user business according to the transmission power change requirement of the capacity station cell; and process the user service according to the transmission power of the capacity station cell; Variations require processing of the transmit power of the capacity station cell.
根据另一个方面，提出了一种功率降额装置，包括：发射功率变化确定单元，用于获取覆盖站小区的第一负载量和容量站小区的第二负载量，并基于所述第一负载量和第二负载量根据预先确定的判断准则确定容量站小区的发射功率变化要求；用户业务处理单元，用于根据所述容量站小区的发射功率变化要求利用业务处理方式对用户业务进行处理；以及发射功率处理单元，用于根据所述容量站小区的发射功率变化要求对容量站小区的发射功率进行处理。According to another aspect, a power derating device is proposed, including: a transmission power change determination unit, configured to obtain a first load amount of a coverage station cell and a second load amount of a capacity station cell, and based on the first load The capacity and the second load determine the transmission power change requirements of the capacity station cell according to the predetermined judgment criteria; the user service processing unit is used to process the user service by using a service processing method according to the transmission power change requirement of the capacity station cell; and a transmission power processing unit, configured to process the transmission power of the capacity station cell according to the transmission power change requirement of the capacity station cell.
由于在本发明实施例的方案中，根据业务降低了容量站小区的发射功率，从而显著降低了基站的实际功耗。另外，在本发明实施例的方案中还针对用户及业务的差异性进行处理，因此对系统性能和用户体验影响较小。In the solution of the embodiment of the present invention, the transmission power of the cell of the capacity station is reduced according to the service, thereby significantly reducing the actual power consumption of the base station. In addition, in the solutions of the embodiments of the present invention, differences in users and services are also processed, so the impact on system performance and user experience is small.
附图说明Description of drawings
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的前提下，还可以根据这些附图获得其他的附图。In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings required in the embodiments. Obviously, the accompanying drawings in the following description are only some of the present invention. Embodiments, for those of ordinary skill in the art, other drawings can also be obtained based on these drawings without any creative effort.
图1示出了在双频网络中两个异频同覆盖小区的示意图。Fig. 1 shows a schematic diagram of two different-frequency and same-coverage cells in a dual-frequency network.
图2示出了现有网络的典型场景下基站的业务量分布情况。Fig. 2 shows traffic distribution of base stations in a typical scenario of an existing network.
图3示出了根据本发明的一个实施例的进行功率降额的方法的流程图。Fig. 3 shows a flowchart of a method for power derating according to an embodiment of the present invention.
图4示出了根据本发明实施例的确定容量站小区的发射功率变化要求的流程图。Fig. 4 shows a flow chart of determining the transmission power change requirement of a cell of a capacity station according to an embodiment of the present invention.
图5示出了根据本发明实施例的对用户和/或业务进行处理的流程图。Fig. 5 shows a flow chart of processing users and/or services according to an embodiment of the present invention.
图6示出了使用功放调压技术和未使用功放调压技术的情况。Fig. 6 shows the situation of using the power amplifier voltage regulation technology and not using the power amplifier voltage regulation technology.
图7示出了根据本发明的另一个实施例的进行功率降额的方法的流程图。Fig. 7 shows a flowchart of a method for performing power derating according to another embodiment of the present invention.
图8示出了根据本发明实施例的功率降额装置的示意性结构图。Fig. 8 shows a schematic structural diagram of a power derating device according to an embodiment of the present invention.
图9示出了根据本发明另一实施例的功率降额装置的示意性结构图。Fig. 9 shows a schematic structural diagram of a power derating device according to another embodiment of the present invention.
具体实施方式detailed description
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、完整的描述，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。The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
如上面提及的那样，在多频网络中，覆盖站小区主要用于保证覆盖面积，而容量站小区用于提高系统容量。当多频网络中的负载量较高时，覆盖站小区和容量站小区均按照最大功率进行发射，以保证各小区中的服务；当业务负载下降时，则保持覆盖站小区的发射功率不变，同时可以降低容量站小区的发射功率以节能。As mentioned above, in a multi-frequency network, the coverage station cell is mainly used to ensure the coverage area, while the capacity station cell is used to improve the system capacity. When the load in the multi-frequency network is high, both the coverage station cell and the capacity station cell transmit according to the maximum power to ensure the service in each cell; when the business load decreases, the transmission power of the coverage station cell remains unchanged , and at the same time, the transmission power of the capacity station cell can be reduced to save energy.
在下面的实施例中，在没有另外说明的情况下，用CELL1表示覆盖站小区，CELL2表示容量站小区。In the following embodiments, unless otherwise stated, CELL1 is used to represent a coverage station cell, and CELL2 is used to represent a capacity station cell.
图3示出了根据本发明的一个实施例的在双频网络中进行功率降额的方法的流程图。可见，该方法包括如下步骤。Fig. 3 shows a flowchart of a method for power derating in a dual-band network according to an embodiment of the present invention. It can be seen that the method includes the following steps.
步骤310、获取覆盖站小区的第一负载量和容量站小区的第二负载量，并基于所述第一负载量和第二负载量根据预先确定的判断准则确定容量站小区CELL2的发射功率变化要求。在本发明实施例中，负载量这一术语表示小区中的资源占用情况。本领域技术人员知道，负载量可以根据实际需要通过不同指标来反映，例如可以通过业务量、用户数这些指标来反映，因此可以相应地选择判断准则来确定容量站小区CELL2的发射功率变化要求。发射功率变化要求可以是：提高CELL2的发射功率和需要提高的发射功率值、降低CELL2的发射功率和允许降低的发射功率值、以及保持CELL2的发射功率不变。关于具体如何确定发射功率变化要求，在下文中将结合图4具体描述。Step 310: Obtain the first load of the coverage station cell and the second load of the capacity station cell, and determine the change in transmit power of the capacity station cell CELL2 based on the first load and the second load according to a predetermined criterion Require. In the embodiment of the present invention, the term load indicates the resource occupation in the cell. Those skilled in the art know that the load can be reflected by different indicators according to actual needs, for example, it can be reflected by indicators such as traffic volume and number of users, so the judgment criterion can be selected accordingly to determine the transmission power change requirements of the capacity station cell CELL2. The transmission power change requirement may be: increase the transmission power of CELL2 and the required increased transmission power value, decrease the CELL2 transmission power and allow the reduced transmission power value, and keep the CELL2 transmission power unchanged. How to determine the transmit power change requirement will be specifically described below in conjunction with FIG. 4 .
步骤320、根据容量站小区CELL2的发射功率变化要求利用业务处理方式对用户和/或业务进行处理。在此，所使用的处理方式可以根据实际需要来确定，包括但不限于：对高优先级业务处理、对低优先级业务处理以及对双小区(DC)用户处理，其目的是为了尽可能降低对系统性能和用户体验影响。关于具体如何对用户业务进行处理，在下文中将结合图5具体描述。Step 320: Process users and/or services in a service processing manner according to the change in transmission power of the capacity station cell CELL2. Here, the processing methods used can be determined according to actual needs, including but not limited to: processing high-priority services, low-priority services, and dual-cell (DC) users. Impact on system performance and user experience. How to process user services will be specifically described below in conjunction with FIG. 5 .
步骤330、根据容量站小区CELL2的发射功率变化要求对容量站小区的发射功率进行处理。Step 330, process the transmit power of the capacity station cell according to the change requirement of the transmit power of the capacity station cell CELL2.
优选的是，上述功率降额方法可以周期性地执行，例如，为此可以在基站中设置有定时器，以周期性地触发上述方法。例如，可以每100ms执行一次上述功率降额方法。Preferably, the above power derating method may be performed periodically, for example, a timer may be set in the base station to periodically trigger the above method. For example, the above power derating method may be performed every 100 ms.
另外，若在步骤310中采用基于业务QoS的负载量来确定CELL2的发射功率变化要求，则优选的是，在步骤310之前基于业务QoS对容量站小区CELL2中的用户先进行处理。具体而言，根据用户的差异性以及业务的优先级来进行处理。对于高优先级用户和专用信道(DCH)用户，仍然保障其业务，即维持不变，而对于低优先级业务，降低速率并仅仅保障其基本比特速率(GBR)，而并不保证实时速率。通过基于业务QoS预先降低了低优先级业务的速率，从而降低了CELL2中的负载量L2，使得在随后的步骤310中基于QoS的负载量来确定CELL2的发射功率变化要求时，具有更大的可能得到降低CELL2的发射功率的要求，从而有利于节省基站的功耗。In addition, if the load based on service QoS is used to determine the transmission power change requirement of CELL2 in step 310, it is preferable to process the users in the capacity station cell CELL2 based on service QoS before step 310. Specifically, the processing is performed according to user differences and business priorities. For high-priority users and dedicated channel (DCH) users, their services are still guaranteed, that is, they remain unchanged, while for low-priority services, the rate is reduced and only the basic bit rate (GBR) is guaranteed, but the real-time rate is not guaranteed. The rate of low-priority services is reduced in advance based on the service QoS, thereby reducing the load L2 in CELL2, so that in the subsequent step 310, when determining the transmission power change requirements of CELL2 based on the QoS load, there is a greater It may be required to reduce the transmit power of CELL2, which is beneficial to save the power consumption of the base station.
在本实施例的方法中，根据小区的负载量来调整容量站小区的发射功率，从而解决了现有技术中对于中等业务量无法节能的问题，显著降低了基站的实际功耗。另外，在本发明实施例的方案中还针对用户及业务的差异性进行处理，因此对系统性能和用户体验影响较小。In the method of this embodiment, the transmission power of the cell of the capacity station is adjusted according to the load of the cell, thereby solving the problem of inability to save energy for medium traffic in the prior art, and significantly reducing the actual power consumption of the base station. In addition, in the solutions of the embodiments of the present invention, differences in users and services are also processed, so the impact on system performance and user experience is small.
图4示出了根据本发明实施例的基于覆盖站小区和容量站小区的负载量根据预先确定的判断准则确定容量站小区的发射功率变化要求的流程图。从图4可见，根据小区负载量确定容量站小区CELL2的发射功率变化要求具体包括：Fig. 4 shows a flow chart of determining the transmission power change requirement of the capacity station cell based on the loads of the coverage station cell and the capacity station cell according to a predetermined judgment criterion according to an embodiment of the present invention. It can be seen from Fig. 4 that the transmission power change requirements of the capacity station cell CELL2 are determined according to the load of the cell, including:
步骤410、获取覆盖站小区CELL1的第一负载量L1，将第一负载量L1与第一门限值Th1比较。如前面的实施例中所描述的，负载量可以根据实际需要通过不同指标来反映，例如可以通过业务量、用户数这些指标来反映，因此可以相应地选择所使用的第一门限值Th1。例如，通过业务量来反映负载量的情况下，假定CELL1可以承载的业务总量为A，设定Th1为A*80％。或者，通过用户数来反映负载量的情况下，假定CELL1可以容纳的用户数为B，设定Th1为B*80％。当然这里的80％仅仅是作为例子来给出，本领域技术人员可以根据实际情况来具体设定。第一门限值Th1与覆盖站小区CELL1的发射功率P1有关。例如，当覆盖站小区的发射功率P1越大，则CELL1可承载的业务总量A也越大，或者可容纳的用户数B越多，等等。Step 410: Obtain a first load L1 of the cell CELL1 of the coverage station, and compare the first load L1 with a first threshold Th1. As described in the previous embodiments, the load can be reflected by different indicators according to actual needs, for example, it can be reflected by indicators such as traffic volume and number of users, so the used first threshold Th1 can be selected accordingly. For example, in the case where the load is reflected by the traffic volume, it is assumed that the total traffic that CELL1 can carry is A, and Th1 is set to be A*80%. Alternatively, when the load is reflected by the number of users, assume that the number of users that CELL1 can accommodate is B, and set Th1 as B*80%. Of course, the 80% here is only given as an example, and those skilled in the art can specifically set it according to the actual situation. The first threshold Th1 is related to the transmit power P1 of the cell CELL1 of the coverage station. For example, when the transmit power P1 of the cell of the coverage station is greater, the total amount of traffic A that can be carried by CELL1 is also greater, or the number of users B that can be accommodated is greater, and so on.
步骤420、当第一负载量L1大于第一门限值Th1时，确定容量站小区CELL2需要提高发射功率，并相应地确定需要提高的发射功率值。当L1＞Th1时，表明覆盖站小区CELL1的负载量太大，因此需要提高容量站小区CELL2的发射功率，以便满足业务的容量需求。当确定容量站小区CELL2需要提高发射功率时，将容量站小区CELL2的发射功率提高至所需功率值。为此可以将容量站小区CELL2的发射功率分为N个等级(N为根据需要确定的自然数)，根据功放等硬件限制，假定容量站小区CELL2的最大发射功率为P2MAX，则功率分级后，其发射功率分别记为P2，0，P2，1，P2，2，…，P2，N(其中P2，0＝P2MAX，P2，N＞0)。这里，每个等级之间的功率差可以根据需要来确定，而并不一定要求是相同的。在提高发射功率时，将发射功率按照等级来提高。这里也并非要求是逐级提高，而是可以根据实际情况来确定提高一个或者若干个等级，以便满足业务的容量需求。由于存在突发业务的情况，因此在提高发射功率时优选将发射功率直接提高至能够实现的最大值P2MAX，以避免出现系统容量不能满足业务需求的情况。Step 420: When the first load L1 is greater than the first threshold Th1, it is determined that the capacity station cell CELL2 needs to increase the transmission power, and correspondingly determine the value of the transmission power that needs to be increased. When L1>Th1, it indicates that the load of the cell CELL1 of the coverage station is too large, so the transmission power of the cell CELL2 of the capacity station needs to be increased to meet the capacity requirement of the service. When it is determined that the transmission power of the capacity station cell CELL2 needs to be increased, the transmission power of the capacity station cell CELL2 is increased to a required power value. For this reason, the transmission power of the capacity station cell CELL2 can be divided into N levels (N is a natural number determined according to the needs). According to hardware limitations such as power amplifiers, assuming that the maximum transmission power of the capacity station cell CELL2 is P2MAX , after power classification, The transmit powers are respectively denoted as P2,0 , P2,1 , P2,2 , ..., P2,N (wherein P2,0 =P2MAX , P2,N >0). Here, the power difference between each level can be determined according to needs, but not necessarily required to be the same. When increasing the transmit power, increase the transmit power according to the level. It is not required to increase level by level, but one or several levels can be determined according to the actual situation, so as to meet the capacity requirements of the business. Due to the situation of bursty traffic, it is preferable to directly increase the transmit power to the maximum achievable maximum value P2MAX when increasing the transmit power, so as to avoid the situation that the system capacity cannot meet the service requirements.
步骤430、当第一负载量L1在第一门限值Th1以下时，获取容量站小区CELL2的第二负载量L2，将第二负载量L2与第二门限值Th2比较。由于当L1在Th1以下时，表明覆盖站小区CELL1的负载量不大，因此可以进一步判断容量站小区CELL2的发射功率是否需要调整。如上所述的那样，也可以根据反映负载量的指标相应地选择所使用的第二门限值Th2。例如，通过业务量来反映负载量的情况下，假定CELL2可以承载的业务总量为B，设定Th2为B*20％。或者，通过用户数来反映负载量的情况下，假定CELL2可以容纳的用户数为B，设定Th2为B*20％。这里的20％也仅仅是作为例子来给出，本领域技术人员可以根据实际情况来具体设定。第二门限值Th2同样与容量站小区CELL2的发射功率P2有关。Step 430: When the first load L1 is below the first threshold Th1, obtain a second load L2 of the capacity station cell CELL2, and compare the second load L2 with the second threshold Th2. Since when L1 is below Th1, it indicates that the load of the coverage station cell CELL1 is not large, so it can be further judged whether the transmission power of the capacity station cell CELL2 needs to be adjusted. As mentioned above, the used second threshold Th2 may also be selected correspondingly according to the index reflecting the load. For example, in the case where the load is reflected by the traffic volume, it is assumed that the total traffic volume that CELL2 can carry is B, and Th2 is set to be B*20%. Alternatively, when the load is reflected by the number of users, it is assumed that the number of users that CELL2 can accommodate is B, and Th2 is set to be B*20%. The 20% here is only given as an example, and those skilled in the art can specifically set it according to the actual situation. The second threshold Th2 is also related to the transmission power P2 of the cell CELL2 of the capacity station.
步骤440、当第二负载量L2小于第二门限值Th2时，确定容量站小区CELL2允许降低发射功率，并相应地确定允许降低的发射功率值。当L2＜Th2时，说明容量站小区CELL2的负载量较小，因此可以降低CELL2的发射功率以节省功耗。为此，可以进一步判断容量站小区CELL2的第二负载量L2是否小于第三门限值Th3，如果第二负载量L2小于第三门限值Th3，则确定允许关断容量站小区的发射功率，否则确定允许将发射功率降低预先确定的等级。在此，第三门限值Th3是预先设定的值。当第二负载量小于第三门限值Th3时，说明该容量站小区的业务负载量很小，可以进行载波关断。关断载波也即关断小区，包括关断该小区公共信道中的导频信息、广播信息等。载波关断技术是现有技术，这里不再详细描述。如果第二负载量L2在第三门限值Th3以上时，不能进行载波关断，为了尽可能避免对用户的影响，确定在降低发射功率时采用逐步降低的方法。在此，可以采用在步骤420中已经设定的等级划分，也可以采用不同的等级划分。每个等级之间的功率差可以根据需要来确定，而并不一定要求是相同的。在降低发射功率时，将发射功率按照等级来降低。这里也并非要求是逐级降低，而是可以根据实际情况来确定降低一个或者若干个等级。Step 440: When the second load L2 is smaller than the second threshold Th2, determine that the capacity station cell CELL2 is allowed to reduce the transmit power, and determine the allowable reduced transmit power value accordingly. When L2<Th2, it means that the load of the capacity station cell CELL2 is small, so the transmit power of CELL2 can be reduced to save power consumption. For this reason, it can be further judged whether the second load L2 of the capacity station cell CELL2 is less than the third threshold value Th3, and if the second load L2 is less than the third threshold value Th3, it is determined that the transmission power of the capacity station cell is allowed to be turned off , otherwise it is determined to allow reducing the transmit power by a predetermined level. Here, the third threshold Th3 is a preset value. When the second load is less than the third threshold Th3, it indicates that the service load of the cell of the capacity station is very small, and the carrier can be switched off. Turning off the carrier means turning off the cell, including turning off the pilot information and broadcast information in the common channel of the cell. The carrier cut-off technology is an existing technology, and will not be described in detail here. If the second load L2 is above the third threshold Th3, the carrier cannot be turned off. In order to avoid impact on users as much as possible, it is determined to adopt a method of gradually reducing the transmit power. Here, the class division already set in step 420 may be used, or a different class division may be used. The power difference between each level can be determined according to needs, but not necessarily required to be the same. When reducing the transmit power, reduce the transmit power according to the level. Here, it is not required to lower level by level, but it can be determined to lower one or several levels according to the actual situation.
步骤450、当第二负载量L2在第二门限值Th2以上时，表明覆盖站小区CELL1和容量站小区CELL2都处于合适的工作状态，即处于稳定的工作状态，因此确定容量站小区CELL2保持发射功率不变。Step 450, when the second load L2 is above the second threshold value Th2, it indicates that both the coverage station cell CELL1 and the capacity station cell CELL2 are in a proper working state, that is, in a stable working state, so it is determined that the capacity station cell CELL2 remains The transmit power remains unchanged.
可见，在根据本实施例的方案中，基于覆盖站小区和容量站小区的负载量利用相应的门限值进行判断，从而可以准确地对小区的工作状态进行分类，以便进一步控制容量站小区的发射功率。It can be seen that in the solution according to this embodiment, based on the load of the coverage station cell and the capacity station cell, the corresponding threshold value is used to judge, so that the working status of the cell can be accurately classified, so as to further control the capacity of the capacity station cell. transmit power.
图5示出了根据本发明实施例的、根据容量站小区CELL2的发射功率变化要求利用业务处理方式对用户和/或业务进行处理的流程图。从图5可见，对用户和/或业务进行处理包括以下步骤。Fig. 5 shows a flow chart of processing users and/or services in a service processing manner according to the change requirement of the transmission power of the cell CELL2 of the capacity station according to an embodiment of the present invention. It can be seen from Fig. 5 that processing users and/or services includes the following steps.
步骤510、获取容量站小区CELL2的发射功率变化要求。在此，可以从结合图4所描述的方法中获得上述发射功率变化要求。Step 510, acquire the transmission power change requirement of the capacity station cell CELL2. Here, the above transmission power change requirement can be obtained from the method described in conjunction with FIG. 4 .
步骤520、当确定容量站小区CELL2允许降低发射功率，并相应地确定允许降低的发射功率值时，根据该允许降低的发射功率值来修改容量站小区中的外围用户的小区切换门限值，使得外围用户中处于连接状态的用户切换至覆盖站的小区中，而处于空闲状态用户待功率降低后，自动重选至覆盖站小区。在本发明实施例中，外围用户的含义是，原来在容量站小区CELL2的覆盖范围中，然而在降低容量站小区的发射功率之后并不处于其覆盖范围中的用户。因此，可以根据允许降低的发射功率值来确定外围用户并对其小区切换门限值进行修改。针对切换的用户，例如，可以通过无线网络控制器(RNC)来修改用户的小区切换门限值。由于CELL2的发射功率降低时，CELL2覆盖范围相应减小，原属于CELL2的覆盖范围内的外围用户可能不能继续附着在CELL2中，因此通过修改这些外围用户的切换门限值，可以使得这些用户认为CELL2的信号强度不能满足通信要求，从而提前切换到覆盖站小区CELL1中，由此避免了后续对CELL2的发射功率的调整影响外围用户。Step 520: When it is determined that the capacity station cell CELL2 is allowed to reduce the transmit power, and correspondingly determine the allowable reduced transmit power value, modify the cell handover threshold of the peripheral users in the capacity station cell according to the allowable reduced transmit power value, The users in the connected state among the peripheral users are switched to the cell of the coverage station, and the users in the idle state are automatically reselected to the cell of the coverage station after the power is reduced. In the embodiment of the present invention, peripheral users refer to users who are originally in the coverage area of the capacity station cell CELL2 but are not in the coverage area after reducing the transmission power of the capacity station cell. Therefore, peripheral users can be determined according to the allowable reduced transmit power value and their cell switching thresholds can be modified. For the handover user, for example, the radio network controller (RNC) may modify the user's cell handover threshold. When the transmit power of CELL2 decreases, the coverage of CELL2 decreases accordingly, and the peripheral users who originally belonged to the coverage of CELL2 may not be able to continue to attach to CELL2. Therefore, by modifying the handover threshold of these peripheral users, these users can think that The signal strength of CELL2 cannot meet the communication requirements, so it is switched to the coverage station cell CELL1 in advance, thereby preventing the subsequent adjustment of the transmission power of CELL2 from affecting peripheral users.
步骤530、对容量站小区CELL2中除外围用户之外的其他用户进行分类，并根据用户的类别进行相应处理。例如，可以将高优先级业务切换至覆盖站小区CELL1中，从而保证高优先级业务的服务；可以将低优先级业务降低速率并保障其基本比特速率，从而在降低容量站小区CELL2的发射功率之后，尽可能地减少对容量站小区CELL2的容量的影响；以及可以使得双小区(DC)用户选择覆盖站小区CELL1作为其主小区，由于DC用户同时使用两个小区，通过将覆盖站小区CELL1作为主小区，同样可以使得作为辅小区的容量站小区CELL2的发射功率降低对于DC用户的影响减少到最小。Step 530: Classify other users in the capacity station cell CELL2 except peripheral users, and perform corresponding processing according to the user category. For example, the high-priority business can be switched to the coverage station cell CELL1, so as to ensure the service of the high-priority business; the rate of the low-priority business can be reduced and its basic bit rate can be guaranteed, thereby reducing the transmission power of the capacity station cell CELL2 After that, reduce the impact on the capacity of the capacity station cell CELL2 as much as possible; and can make the double cell (DC) user select the coverage station cell CELL1 as its main cell, because the DC user uses two cells at the same time, by using the coverage station cell CELL1 As the primary cell, the influence of the transmission power reduction of the capacity station cell CELL2 as the secondary cell on the DC user can also be minimized.
如果确定容量站小区CELL2的发射功率需要增大或者保持不变，则无需对用户和/或业务进行上述处理。If it is determined that the transmit power of the cell CELL2 of the capacity station needs to be increased or kept unchanged, the above processing does not need to be performed on users and/or services.
可见，在根据本实施例的方案中，在改变容量站小区CELL2的发射功率之前对用户和/或业务进行了处理，从而使得对于系统性能和用户体验的影响较小。It can be seen that in the solution according to this embodiment, users and/or services are processed before changing the transmission power of the capacity station cell CELL2, so that the impact on system performance and user experience is small.
另外，发明人注意到，功放的工作效率与功放的输出功率有关，功放的输出功率越低，功放的工作效率越低。功放调压技术可以根据功放实际的输出功率数值，动态地调整功放的工作电压，保证功放始终工作在最恰当的电压下。图6示出了使用功放调压技术和未使用功放调压技术的功放输出功率与功放工作效率的关系。可见，尤其是针对功放的输出功率比较小的情况，功放调压技术可以提升功放的工作效率。为此，在本发明的实施例中，当确定容量站小区CELL2允许降低发射功率时，可以使用功放调压技术，根据功放实际的输出功率数值，动态地调整基站的功放的工作电压，当容量站小区CELL2需要增加功率时，使用功放调压技术，使得根据需要提高的功率值调整基站的工作电压。例如，可以由RNC通知基站在降低发射功率时使用功放调压技术。In addition, the inventor noticed that the working efficiency of the power amplifier is related to the output power of the power amplifier, the lower the output power of the power amplifier, the lower the working efficiency of the power amplifier. The power amplifier voltage regulation technology can dynamically adjust the working voltage of the power amplifier according to the actual output power value of the power amplifier, so as to ensure that the power amplifier always works at the most appropriate voltage. Fig. 6 shows the relationship between the output power of the power amplifier and the working efficiency of the power amplifier with and without the voltage regulation technology of the power amplifier. It can be seen that, especially for the case where the output power of the power amplifier is relatively small, the power amplifier voltage regulation technology can improve the working efficiency of the power amplifier. For this reason, in the embodiment of the present invention, when it is determined that the capacity station cell CELL2 is allowed to reduce the transmission power, the power amplifier voltage regulation technology can be used to dynamically adjust the operating voltage of the power amplifier of the base station according to the actual output power value of the power amplifier. When the station cell CELL2 needs to increase the power, the power amplifier voltage regulation technology is used to adjust the operating voltage of the base station according to the required increased power value. For example, the RNC may notify the base station to use the power amplifier voltage regulation technology when reducing the transmit power.
可见，在功率调节过程中，通过在提高发射功率时直接将发射功率提高至最大值，而在降低发射功率时按照预先确定的等级进行，避免了系统容量不能满足业务需求的情况，并且可以避免降低功率对用户的影响。另外，通过使用功放调压技术，即使在CELL2的发射功率降低到较低水平时，功放的工作效率也不会很低，使得功放得到充分利用，从而节省了功率资源。It can be seen that in the process of power adjustment, by directly increasing the transmission power to the maximum value when increasing the transmission power, and following the predetermined level when reducing the transmission power, the situation that the system capacity cannot meet the business requirements can be avoided, and it can be avoided. Reduced power impact on users. In addition, through the use of power amplifier voltage regulation technology, even when the transmission power of CELL2 is reduced to a low level, the work efficiency of the power amplifier will not be low, so that the power amplifier can be fully utilized, thereby saving power resources.
当多频网络中包含2个异频同覆盖小区时，可以直接使用前面的实施例的方案。而当存在3个以上的异频同覆盖小区时，需要进一步的设计。图7示出了根据本发明的另一个实施例的在包括3个以上的异频同覆盖小区的多频网络中进行功率降额的方法的流程图。可见，该方法包括如下步骤：When the multi-frequency network includes two different-frequency and same-coverage cells, the solutions of the preceding embodiments can be directly used. However, when there are more than three different-frequency and same-coverage cells, further design is required. Fig. 7 shows a flowchart of a method for performing power derating in a multi-frequency network including more than three different-frequency and same-coverage cells according to another embodiment of the present invention. Visible, this method comprises the following steps:
步骤710、获取覆盖站小区的第一负载量和各容量站小区的第二负载量，基于所述第一负载量和优先级最高的容量站小区的第二负载量根据预先确定的判断准则确定优先级最高的容量站小区的发射功率变化要求。在存在3个以上的异频同覆盖小区时，除了覆盖站小区之外还存在多个容量站小区，因此，可以对容量站小区设置优先级，并选择优先级最高的容量站小区来进行发射功率调整。例如，可以基于业务量大小来设置优先级，业务量越小，说明该容量站小区被功率降额的可能性越大，因此可以将其优先级设为越高。也可以基于业务的服务质量QoS来设置优先级。如果基于QoS对部分用户进行处理之后，业务量越小，则说明该容量站小区被功率降额的可能性越大，因此可以将其优先级设为越高。在结合图4所描述的实施例中可知，对于每个容量站小区都预先设置有第二门限值Th2，该第二门限值与相应容量站小区的发射功率有关，因此根据本发明的一个实施形式，可以根据第i个容量站小区的第二门限值Th2i和该容量站小区的负载量L2i来确定优先级。例如，可以设置为优先级Pri＝Th2i/L2i。由此，在步骤710中，针对优先级最高的容量站小区(假定为CELL2i)来确定发射功率变化要求。Step 710: Obtain the first load of the coverage station cell and the second load of each capacity station cell, and determine based on the first load and the second load of the capacity station cell with the highest priority according to a predetermined criterion Transmit power change request of the capacity station cell with the highest priority. When there are more than 3 different-frequency and same-coverage cells, there are multiple capacity station cells in addition to the coverage station cell. Therefore, you can set the priority for the capacity station cell and select the capacity station cell with the highest priority for transmission. power adjustment. For example, the priority can be set based on the traffic volume. The smaller the traffic volume, the greater the possibility that the cell of the capacity station will be derated, so the priority can be set higher. The priority can also be set based on the service quality QoS of the service. If the traffic volume is smaller after some users are processed based on QoS, it means that the capacity station cell is more likely to be derated in power, so its priority can be set higher. In the embodiment described in conjunction with FIG. 4, it can be known that a second threshold value Th2 is preset for each capacity station cell, and the second threshold value is related to the transmit power of the corresponding capacity station cell. Therefore, according to the present invention In an implementation form, the priority may be determined according to the second threshold Th2i of the i-th capacity station cell and the load L2i of the capacity station cell. For example, the priority can be set as Pri =Th2i /L2i . Therefore, in step 710, the transmit power change requirement is determined for the capacity station cell with the highest priority (assumed to be CELL2i).
步骤720、根据容量站小区CELL2i的发射功率变化要求利用业务处理方式对用户和/或业务进行处理。Step 720: Process users and/or services in a service processing manner according to the change in transmission power of the capacity station cell CELL2i.
步骤730、根据容量站小区CELL2i的发射功率变化要求对容量站小区的发射功率进行处理。Step 730: Process the transmit power of the capacity station cell according to the change requirement of the transmit power of the capacity station cell CELL2i.
步骤720和730与前面实施例中的步骤320、330相同，这里不再赘述。Steps 720 and 730 are the same as steps 320 and 330 in the previous embodiment, and will not be repeated here.
通过该实施例所提供的方案，在多频网络中包含3个以上的异频同覆盖小区时，可以有效地选择合适的容量站小区进行功率调整，因此可以降低基站的功耗。Through the solution provided by this embodiment, when the multi-frequency network includes more than three different-frequency and same-coverage cells, an appropriate capacity station cell can be effectively selected for power adjustment, thereby reducing the power consumption of the base station.
根据本发明实施例的方法可以用于全向小区，也可以用于定向小区，并且可以用于各种制式的多频系统，例如全球移动通信系统(GSM)、通用移动通信系统(UMTS)、长期演进系统(LTE)、WiMax系统等等，包括同制式的多频系统以及异制式的多频系统。The method according to the embodiment of the present invention can be used for omni-directional cells, and can also be used for directional cells, and can be used for multi-frequency systems of various standards, such as Global System for Mobile Communications (GSM), Universal Mobile Telecommunications System (UMTS), Long-term evolution system (LTE), WiMax system, etc., including multi-frequency systems of the same standard and multi-frequency systems of different standards.
相应地，根据本发明的一个实施例，还提出了一种功率降额装置。图8示出了根据一个实施例的功率降额装置的一个示意性结构图。可见，该装置包括：发射功率变化确定单元810，用于获取覆盖站小区的第一负载量和容量站小区的第二负载量，并基于所述第一负载量和第二负载量根据预先确定的判断准则确定容量站小区的发射功率变化要求；用户业务处理单元820，用于根据所述容量站小区的发射功率变化要求利用业务处理方式对用户业务进行处理；以及发射功率处理单元830，用于根据所述容量站小区的发射功率变化要求对容量站小区的发射功率进行处理。Correspondingly, according to an embodiment of the present invention, a power derating device is also provided. Fig. 8 shows a schematic structural diagram of a power derating device according to an embodiment. It can be seen that the device includes: a transmission power change determining unit 810, configured to obtain the first load of the coverage station cell and the second load of the capacity station cell, and based on the first load and the second load according to a predetermined determine the transmission power change requirements of the capacity station cell; the user service processing unit 820 is configured to process user services in a service processing manner according to the transmission power change requirement of the capacity station cell; and the transmission power processing unit 830 uses The transmission power of the capacity station cell is processed according to the change requirement of the transmission power of the capacity station cell.
根据一个实施形式，发射功率变化确定单元810进一步用于：获取覆盖站小区的第一负载量，将第一负载量与第一门限值比较，当第一负载量大于第一门限值时，确定容量站小区需要提高发射功率，并相应地确定需要提高的发射功率值；当第一负载量在第一门限值以下时，获取容量站小区的第二负载量，将第二负载量与第二门限值比较，当第二负载量小于第二门限值时，确定容量站小区允许降低发射功率，并相应地确定允许降低的发射功率值，当第二负载量在第二门限值以上时，确定容量站小区保持发射功率不变。According to an implementation form, the transmission power change determination unit 810 is further configured to: obtain the first load of the cell of the coverage station, compare the first load with the first threshold, and when the first load is greater than the first threshold , it is determined that the capacity station cell needs to increase the transmission power, and correspondingly determine the transmission power value that needs to be increased; when the first load is below the first threshold value, the second load of the capacity station cell is obtained, and the second load is Compared with the second threshold value, when the second load amount is less than the second threshold value, it is determined that the capacity station cell is allowed to reduce the transmission power, and correspondingly determines the allowable reduced transmission power value, when the second load amount is within the second threshold value When it is above the limit, the cell of the determined capacity station keeps the transmit power unchanged.
根据一个实施形式，发射功率变化确定单元810进一步用于：确定将容量站小区的发射功率提高预先确定的等级，或者确定将容量站小区的发射功率直接提高至能够实现的最大值。According to an implementation form, the transmission power change determination unit 810 is further configured to: determine to increase the transmission power of the capacity station cell by a predetermined level, or determine to directly increase the transmission power of the capacity station cell to the maximum value that can be achieved.
根据一个实施形式，发射功率变化确定单元810进一步用于：判断第二负载量是否小于第三门限值，如果第二负载量小于第三门限值，则确定关断容量站小区的发射功率，否则确定将发射功率降低预先确定的等级。According to an implementation form, the transmission power change determination unit 810 is further configured to: determine whether the second load is less than the third threshold, and if the second load is less than the third threshold, determine the transmission power of the cell with the capacity off , otherwise it is determined to reduce the transmit power by a predetermined level.
根据一个实施形式，用户业务处理单元820进一步用于：当确定容量站小区允许降低发射功率时，根据允许降低的发射功率值来修改容量站小区中的外围用户的小区切换门限值，使得所述外围用户切换至覆盖站的小区中；以及对容量站小区中除外围用户之外的其他用户进行分类，并根据用户的类别进行相应处理。According to an implementation form, the user service processing unit 820 is further configured to: when it is determined that the transmission power of the capacity station cell is allowed to be reduced, modify the cell handover threshold of the peripheral users in the capacity station cell according to the allowable reduced transmission power value, so that the Handover the aforementioned peripheral users to the cell of the coverage station; and classify other users in the cell of the capacity station except the peripheral users, and perform corresponding processing according to the user category.
根据一个实施形式，用户业务处理单元820进一步用于：将高优先级业务切换至覆盖站小区中，将低优先级业务降低速率保障其基本比特速率，以及使得双小区用户选择覆盖站小区作为其主小区。According to an implementation form, the user service processing unit 820 is further configured to: switch high-priority services to the coverage station cell, reduce the rate of low-priority services to ensure its basic bit rate, and enable dual-cell users to select the coverage station cell as their main cell.
图9示出了根据另一个实施例的功率降额装置的示意性结构图。可见，功率降额装置还包括预处理单元840，用于基于服务质量处理用户，对于高优先级用户和专用信道用户保障其业务，对于低优先级业务降低其速率并仅仅保障基本比特速率。Fig. 9 shows a schematic structural diagram of a power derating device according to another embodiment. It can be seen that the power derating device also includes a preprocessing unit 840, which is used to process users based on service quality, guarantee their services for high-priority users and dedicated channel users, and reduce their rates for low-priority services and only guarantee the basic bit rate.
根据一个实施形式，功率降额装置还包括功放调压单元850，用于在确定容量站小区允许降低发射功率时，启用功放调压功能，以根据基站中功放实际的输出功率数值动态调整功放的工作电压。According to an implementation form, the power derating device also includes a power amplifier voltage regulation unit 850, which is used to enable the power amplifier voltage regulation function when it is determined that the cell of the capacity station allows the transmission power to be reduced, so as to dynamically adjust the power of the power amplifier according to the actual output power value of the power amplifier in the base station. Operating Voltage.
根据一个实施形式，发射功率变化确定单元还包括优先级确定单元(未示出)，用于根据容量站小区的发射功率和负载量确定容量站小区的优先级。According to an implementation form, the transmission power change determination unit further includes a priority determination unit (not shown), configured to determine the priority of the capacity station cell according to the transmission power and load of the capacity station cell.
根据一个实施形式，功率降额装置还包括定时单元860，用于周期性地触发所述功率降额装置的工作。According to an implementation form, the power derating device further includes a timing unit 860, configured to periodically trigger the operation of the power derating device.
本领域技术人员应该理解，本发明实施例中装置模块的划分为功能划分，实际具体结构可以为上述功能模块的拆分或合并。Those skilled in the art should understand that the division of device modules in the embodiments of the present invention is divided into functions, and the actual specific structure may be the splitting or merging of the above functional modules.
上述本发明实施例序号仅仅为了描述，不代表实施例的优劣。The serial numbers of the above embodiments of the present invention are for description only, and do not represent the advantages and disadvantages of the embodiments.
权利要求的内容记载的方案也是本发明实施例的保护范围。The solutions described in the claims are also the scope of protection of the embodiments of the present invention.
本领域普通技术人员可以理解上述实施例方法中的全部或部分处理是可以通过程序来指令相关的硬件完成，所述的程序可以存储于一种计算机可读存储介质中。Those skilled in the art can understand that all or part of the processing in the methods of the above embodiments can be completed by instructing related hardware through a program, and the program can be stored in a computer-readable storage medium.
以上所述仅为本发明的较佳实施例而已，并非用于限定本发明的保护范围。凡在本发明的精神和原则之内，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。The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.
| Application Number | Priority Date | Filing Date | Title |
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| CN201110318274.1ACN103068011B (en) | 2011-10-19 | 2011-10-19 | The method and apparatus of power deratng in multi-frequency network |
| PCT/CN2012/082664WO2013056624A1 (en) | 2011-10-19 | 2012-10-10 | Method and device for power derating in multi-frequency network |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110318274.1ACN103068011B (en) | 2011-10-19 | 2011-10-19 | The method and apparatus of power deratng in multi-frequency network |
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| CN201110318274.1AActiveCN103068011B (en) | 2011-10-19 | 2011-10-19 | The method and apparatus of power deratng in multi-frequency network |
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