技术领域technical field
本发明涉及一种基于数据缓存的基站节能方法及节能系统，属于通信技术领域。The invention relates to a data cache-based energy-saving method and energy-saving system for a base station, belonging to the technical field of communications.
背景技术Background technique
由于蜂窝小区的业务具有时空转移的特点。一天中的网络负载有大约一半是在低负载情况下的，但是为了满足高峰时期的用户数据率，系统设计仍然需要按满负载量来配置，这就导致低负载时造成资源和能量的浪费，使得网络效率在低负载时偏低。而时域时间关断、频域带宽自适应两种技术在低负载条件下都能减少能量的浪费。Because the business of the cellular cell has the characteristic of time and space transfer. About half of the network load in a day is under low load conditions, but in order to meet the user data rate during the peak period, the system design still needs to be configured according to the full load, which leads to waste of resources and energy during low loads. Make the network efficiency low at low load. However, time-domain time-off and frequency-domain bandwidth self-adaptation can reduce energy waste under low-load conditions.
基于时域的绿色通信系统的节能技术，主要思想是通过负载的轻重才决定基站在时域上的关闭以及开启方案，网络出于高负载时，基站肯定也是满负载工作，对应时域就是基站PA连续不同的发送。在网络负载低时候，大部分数据信道均处于空闲状态，此时我们将业务分时段发送，即不连续发送，不发送业务信息时，即将PA关断；域节能技术基于功放的静态功耗和系统带宽呈线性关系原理，较小的带宽需要更少的辐射功率。从资源分配的角度，所分配的RB个数与所需传输数据量有关，限制可调度的RB的数目，可以从时间域上限制，也可以从频域上限值，为了达到节能的目的，经分析，系统的能耗随分配PRB个数的增加而降低，所以我们将时频节能技术联合考虑，应尽量多的分配频域资源，再分配时域资源。The energy-saving technology of the green communication system based on the time domain, the main idea is to determine the closing and opening scheme of the base station in the time domain by the weight of the load. When the network is under high load, the base station must also work at full load, and the corresponding time domain is the base station The PA sends differently in succession. When the network load is low, most of the data channels are in an idle state. At this time, we will send the business in different periods, that is, discontinuously. When no business information is sent, the PA will be turned off; the domain energy-saving technology is based on the static power The system bandwidth is based on the principle of a linear relationship, and a smaller bandwidth requires less radiated power. From the perspective of resource allocation, the number of allocated RBs is related to the amount of data to be transmitted. Limiting the number of schedulable RBs can be limited from the time domain or from the upper limit of the frequency domain. In order to achieve the purpose of energy saving, After analysis, the energy consumption of the system decreases with the increase of the number of allocated PRBs, so we consider time-frequency energy-saving technologies together, and allocate as many frequency domain resources as possible, and then allocate time domain resources.
发明内容Contents of the invention
为了使网络在低负载时提高使用效率，本发明提供一种基于数据缓存的基站节能方法及节能系统。本发明解决其技术问题所采用的技术方案是：一种基于数据缓存的基站节能系统，包括，基站配置模块，用于配置基站内用户的基本信息；业务源模块，用于根据所述基本信息产生若干所述用户的数据包；接入控制模块，用于确定所述用户的数量并对所述用户进行接入控制；资源调度模块，用于对所述用户的数据包进行资源调度；结果统计模块，用于在资源调度、所述用户成功接收数据后，进行结果统计。In order to improve the use efficiency of the network when the load is low, the invention provides a base station energy saving method and an energy saving system based on data cache. The technical solution adopted by the present invention to solve the technical problem is: a base station energy-saving system based on data cache, including a base station configuration module for configuring the basic information of users in the base station; a service source module for Generate a number of data packets of the users; an access control module, configured to determine the number of users and perform access control on the users; a resource scheduling module, configured to perform resource scheduling on the data packets of the users; the result The statistical module is used to perform result statistics after resource scheduling and the user successfully receives data.
进一步地，所述资源调度模块用于以每100ms为一个单位，将数据缓存一段时间，然后在剩余时间中将缓存的数据发送。Further, the resource scheduling module is configured to cache data for a period of time with every 100ms as a unit, and then send the cached data in the remaining time.
进一步地，所述结果统计模块用于统计在不同睡眠时间下各个所述用户的延时和能效。Further, the result statistics module is used to count the delay and energy efficiency of each user under different sleep times.
一种基于数据缓存的基站节能方法，包括如下步骤，A method for energy saving of a base station based on data caching, comprising the following steps,
步骤1)配置基站内用户的基本信息；Step 1) configure the basic information of users in the base station;
步骤2)根据所述基本信息产生若干所述用户的数据包；Step 2) generating some data packets of the user according to the basic information;
步骤3)确定所述用户的数量并对所述用户进行接入控制；Step 3) determining the number of users and performing access control on the users;
步骤4)对所述用户的数据包进行资源调度；Step 4) performing resource scheduling on the user's data packets;
步骤5)资源调度、所述用户成功接收数据后，进行结果统计。Step 5) Resource scheduling, after the user successfully receives the data, perform result statistics.
进一步地，所述步骤4)具体包括，以每100ms为一个单位，将数据缓存一段时间，然后在剩余时间中将缓存的数据发送。Further, the step 4) specifically includes, taking every 100 ms as a unit, buffering the data for a period of time, and then sending the buffered data in the remaining time.
进一步地，所述步骤5)具体包括，统计在不同睡眠时间下各个所述用户的延时和能效。Further, the step 5) specifically includes, counting the delay and energy efficiency of each user under different sleep times.
本发明的益处为：低负载时有效节省了资源和能量，使得网络效率在低负载时有了较大提高，减少了资源和能源的浪费，当业务量不大时，将缓存一段时间后的数据进行发送可以充分利用系统的RB资源。The benefits of the present invention are: resources and energy are effectively saved at low loads, the network efficiency is greatly improved at low loads, and waste of resources and energy is reduced. Sending data can make full use of RB resources of the system.
附图说明Description of drawings
图1是本发明基于数据缓存的基站节能系统的结构框图；Fig. 1 is a structural block diagram of the base station energy-saving system based on data caching in the present invention;
图2是本发明基于数据缓存的基站节能方法的流程示意图；FIG. 2 is a schematic flowchart of a method for energy saving of a base station based on data caching in the present invention;
图3是传统DTX节能技术资源分配图；Figure 3 is a traditional DTX energy-saving technology resource allocation diagram;
图4是深度DTX技术资源分配图；Figure 4 is a resource allocation diagram of Deepin DTX technology;
图5是深度DTX流程图；Figure 5 is a flow chart of Deepin DTX;
图6是不同CQI对应的Vmax以及睡眠时间；Figure 6 shows Vmax and sleep time corresponding to different CQIs;
图7是时延随睡眠时间的变化情况；Figure 7 shows the variation of delay with sleep time;
图8是能效随睡眠时间变化曲线图。Fig. 8 is a graph showing the variation of energy efficiency with sleep time.
具体实施方式Detailed ways
当结合附图考虑时，通过参照下面的详细描述，能够更完整更好地理解本发明以及容易得知其中许多伴随的优点，但此处所说明的附图用来提供对本发明的进一步理解，构成本发明的一部分，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，如图其中：A more complete and better understanding of the invention, and many of its attendant advantages, will readily be learned by reference to the following detailed description when considered in conjunction with the accompanying drawings, but the accompanying drawings illustrated herein are intended to provide a further understanding of the invention and constitute A part of the present invention, the exemplary embodiment of the present invention and its description are used to explain the present invention, and do not constitute an improper limitation of the present invention, as shown in the figure:
显然，本领域技术人员基于本发明的宗旨所做的许多修改和变化属于本发明的保护范围。Obviously, many modifications and changes made by those skilled in the art based on the gist of the present invention belong to the protection scope of the present invention.
实施例1：如图1所示，本实施例提供一种基于数据缓存的基站节能系统，包括基站配置模块，用于配置基站内用户的基本信息；业务源模块，用于根据基本信息产生若干用户的数据包；接入控制模块，用于确定用户的数量并对用户进行接入控制；资源调度模块，用于对用户的数据包进行资源调度；结果统计模块，用于在资源调度、用户成功接收数据后，进行结果统计。Embodiment 1: As shown in Figure 1, this embodiment provides a base station energy-saving system based on data caching, including a base station configuration module for configuring basic information of users in the base station; a service source module for generating several User data packets; access control module, used to determine the number of users and perform access control on users; resource scheduling module, used to perform resource scheduling on user data packets; result statistics module, used in resource scheduling, user After successfully receiving the data, perform the result statistics.
在优选方案中，资源调度模块用于以每100ms为一个单位，将数据缓存一段时间，然后在剩余时间中将缓存的数据发送。In a preferred solution, the resource scheduling module is configured to cache data for a period of time with every 100 ms as a unit, and then send the cached data in the remaining time.
在优选方案中，结果统计模块用于统计在不同睡眠时间下各个所述用户的延时和能效。In a preferred solution, the result statistics module is used to count the delay and energy efficiency of each user under different sleep times.
本实施例的技术效果为：低负载时有效节省了资源和能量，使得网络效率在低负载时有了较大提高，减少了资源和能源的浪费，当业务量不大时，将缓存一段时间后的数据进行发送可以充分利用系统的RB资源。The technical effect of this embodiment is: resources and energy are effectively saved when the load is low, the network efficiency is greatly improved when the load is low, and the waste of resources and energy is reduced. When the business volume is not large, it will be cached for a period of time Sending the last data can make full use of the RB resources of the system.
如图2所示，本实施例提供一种基于数据缓存的基站节能方法，包括如下步骤，As shown in FIG. 2, this embodiment provides a method for energy saving of a base station based on data caching, which includes the following steps,
步骤1)配置基站内用户的基本信息；Step 1) configure the basic information of users in the base station;
步骤2)根据基本信息产生若干用户的数据包；Step 2) generate some user data packets according to the basic information;
步骤3)确定用户的数量并对用户进行接入控制；Step 3) determine the number of users and perform access control to users;
步骤4)对用户的数据包进行资源调度；Step 4) resource scheduling is carried out to the user's data packet;
步骤5)资源调度、用户成功接收数据后，进行结果统计。Step 5) After the resources are scheduled and the user successfully receives the data, the result statistics are performed.
在优选方案中，步骤4)具体包括，以每100ms为一个单位，将数据缓存一段时间，然后在剩余时间中将缓存的数据发送。In a preferred solution, step 4) specifically includes, taking every 100 ms as a unit, buffering the data for a period of time, and then sending the buffered data during the remaining time.
在优选方案中，所述步骤5)具体包括，统计在不同睡眠时间下各个所述用户的延时和能效。In a preferred solution, the step 5) specifically includes, counting the delay and energy efficiency of each user under different sleep times.
本发明的益处为：低负载时有效节省了资源和能量，使得网络效率在低负载时有了较大提高，减少了资源和能源的浪费，当业务量不大时，将缓存一段时间后的数据进行发送可以充分利用系统的RB资源。The benefits of the present invention are: resources and energy are effectively saved at low loads, the network efficiency is greatly improved at low loads, and waste of resources and energy is reduced. Sending data can make full use of RB resources of the system.
要实现深度DTX技术，首先要确定睡眠时间Tsilent和数据发送时间Ttx，数据传输有最大延时，超过延时容限，数据将被丢弃，所以合理的控制Tsilent和发送时间Ttx是技术开展的关键。In order to realize the deep DTX technology, the sleep time Tsilent and the data transmission time Ttx must be determined first. There is a maximum delay in data transmission. If the delay tolerance is exceeded, the data will be discarded. Therefore, the reasonable control of Tsilent and the transmission time Ttx is The key to technology development.
影响Tsilent的因素有信道质量、当前负载量等。在排队论中有如下定义。Factors affecting Tsilent include channel quality, current load, and so on. In queuing theory there is the following definition.
数据平均到达是时间：The average arrival time of data is:
平均到达率：Average arrival rate:
数据等待时间从数据到达到开始服务的时间，等待时延是数据在系统中平均时延的主要部分。对于传输时延、处理时延一般比较小，这里不予以考虑。data waiting time The waiting time delay is the main part of the average data delay in the system from the time when the data arrives to start the service. The transmission delay and processing delay are generally relatively small, and are not considered here.
数据服务时间从开始接受服务到服务完毕的时间。Data service time Time from start of service to completion of service.
系统停留时间数据从到达到离去的时间system dwell time Time from arrival to departure of data
先对单用户进行分析，我们假设睡眠时间为Tsilent,此时系统的停留时间变成：First analyze the single user, we assume that the sleep time is Tsilent, at this time the system stay time becomes:
S＝w+Ttx+TsilentS＝w+Ttx +Tsilent
在不违背时延容限的条件下要求：Without violating the delay tolerance, it is required that:
S≤DdelayS≤Ddelay
即：which is:
w+Ttx+Tsilent≤Ddelayw+Ttx +Tsilent ≤Ddelay
睡眠时间越长，累计的数据将越多，所以Tsilent的大小对数据发送时间Ttx有一定的影响。我们假设睡眠时间内缓冲的数据是在时间Ttx内发送。The longer the sleep time, the more accumulated data will be, so the size of Tsilent has a certain impact on the data transmission time Ttx . We assume that the data buffered during sleep time is sent at time Ttx .
用Psize表示数据包的平均大小，Dbit表示传输数据的比特数，Vmax表示系统能提供的最大吞吐量，与信道质量及分配的RB个数有关，Tsilent时间内缓冲的数据：Use Psize to represent the average size of the data packet, Dbit to represent the number of bits of transmitted data, Vmax to represent the maximum throughput that the system can provide, which is related to the channel quality and the number of allocated RBs, and the buffered data within Tsilent time:
这些数据将在时间Ttx内发送：Dbit＝Vmax*TtxThese data will be sent within time Ttx : Dbit = Vmax *Ttx
并得到Tsilent与Ttx的关系And get the relationship between Tsilent and Ttx
以及Tsilent的估计值：and an estimate of Tsilent :
LTE系统中，不同CQI值对应的Vmax，随着CQI值增大，系统能传输最大数据量随之增加。从理论角度得出睡眠时间的均值约为60ms。In the LTE system, Vmax corresponding to different CQI values, as the CQI value increases, the maximum amount of data that the system can transmit increases accordingly. From a theoretical point of view, the average sleep time is about 60ms.
如图3所示，在第一个TTI发送用户1的数据，第二个TTI发送用户2的数据，而在三个TTI没有数据发送，此时我们就在此TTI将PA关断。但由于完全没有数据发送或者发送的数据量较小的情况较少，因此传统DTX技术只适用于低负载情况。这里我们提出一种深度DTX技术，如图4所示，在前三个TTI都是有数据发送的，但是为了最大限度的利用频域资源，先将数据缓冲Tsilent时间长度，在此期间功放休眠，休眠后再将数据在一定的时Ttx发送。As shown in Figure 3, the data of user 1 is sent in the first TTI, the data of user 2 is sent in the second TTI, and no data is sent in the three TTIs. At this time, we turn off the PA in this TTI. However, since there are few cases where no data is sent at all or a small amount of data is sent, the traditional DTX technology is only applicable to low-load situations. Here we propose a deep DTX technology, as shown in Figure 4, data is sent in the first three TTIs, but in order to maximize the use of frequency domain resources, the data is first buffered for Tsilent time length, during which the power amplifier Dormancy, after dormancy, the data will be sent at a certain time Ttx .
如图5所示，首先根据不同业务的延时特性判断业务的优先级，对延时容忍程度越高的业务，其优先级越低；对延时容忍程度越低的业务，其优先级越高。高优先级用户不进入睡眠模式，采用相应的调度算法如MaxC/I或者RoundRobin，实现数据的传输。对于低优先级用户，在每100ms中先缓存数据Tsilent时间，接着采用深度DTX对应的资源调度方案将数据在剩余时间内发送。在我们的仿真中，采用的是单一的业务源—video业务，所有用户均采用深度DTX技术。As shown in Figure 5, the priority of the service is first judged according to the delay characteristics of different services. The service with a higher delay tolerance has a lower priority; the service with a lower delay tolerance has a lower priority. high. High-priority users do not enter sleep mode, and use corresponding scheduling algorithms such as MaxC/I or RoundRobin to realize data transmission. For low-priority users, the data is buffered for Tsilent time every 100ms, and then the resource scheduling scheme corresponding to deep DTX is used to send the data in the remaining time. In our simulation, a single service source—video service is adopted, and all users adopt deep DTX technology.
LTE系统中，不同CQI值对应的Vmax，如图6所示，第一条曲线代表不同CQI值下的Vmax值，随着CQI值增大，系统能传输最大数据量随之增加。相应的允许的睡眠时间如图4第二部分，Vmax增大，允许的睡眠时间也会边长。并从理论角度得出睡眠时间的均值约为60ms。In the LTE system, the Vmax corresponding to different CQI values is shown in Figure 6. The first curve represents the Vmax value under different CQI values. As the CQI value increases, the maximum amount of data that the system can transmit increases accordingly. The corresponding allowable sleep time is shown in the second part of Figure 4. As Vmax increases, the allowable sleep time will also be longer. And from a theoretical point of view, the average sleep time is about 60ms.
如图7所示，随着睡眠时间加长，能效成线性增长，由图6所示，随睡眠时间增加，延时也会增加，当睡眠时间超过67ms时，延时会超过容限值，所以我们的延时时间在60ms-67ms之间，但在60ms-67ms之间，能效值趋于平缓，为了满足QoS质量，从固定睡眠时间的调度思考，我们取60ms作为最佳睡眠时间。与原有DTX节能技术对比,新技术能够提高。As shown in Figure 7, as the sleep time increases, the energy efficiency increases linearly. As shown in Figure 6, as the sleep time increases, the delay will also increase. When the sleep time exceeds 67ms, the delay will exceed the tolerance value, so Our delay time is between 60ms-67ms, but between 60ms-67ms, the energy efficiency value tends to be flat. In order to meet the QoS quality, we take 60ms as the optimal sleep time from the perspective of scheduling fixed sleep time. Compared with the original DTX energy-saving technology, the new technology can improve.
以上仅是本发明的一个优选实施例，所述具体实施方式只是用于帮助理解本发明的核心思想。应当指出，对于本技术领域的技术人员而言，在不脱离本发明原理的前提下，还可以对本发明进行若干改进和修饰，这些改进和修饰也属于本发明权利要求的保护范围。The above is only a preferred embodiment of the present invention, and the specific implementation is only used to help understand the core idea of the present invention. It should be pointed out that for those skilled in the art, without departing from the principle of the present invention, some improvements and modifications can also be made to the present invention, and these improvements and modifications also belong to the protection scope of the claims of the present invention.
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| CN201410510739.7ACN104270804B (en) | 2014-09-28 | 2014-09-28 | A kind of base station energy-saving method and energy conserving system based on data buffer storage |
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