WO2021203740A1 - 小区调度方法、电子设备、存储介质及分布式天线系统 - Google Patents

小区调度方法、电子设备、存储介质及分布式天线系统 Download PDF

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WO2021203740A1
WO2021203740A1 PCT/CN2020/138954 CN2020138954W WO2021203740A1 WO 2021203740 A1 WO2021203740 A1 WO 2021203740A1 CN 2020138954 W CN2020138954 W CN 2020138954W WO 2021203740 A1 WO2021203740 A1 WO 2021203740A1
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base station
users
unit
remote unit
scheduling information
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PCT/CN2020/138954
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English (en)
French (fr)
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黄小锋
邓海龙
罗漫江
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京信网络系统股份有限公司
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Publication of WO2021203740A1 publication Critical patent/WO2021203740A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/25—Arrangements specific to fibre transmission
    • H04B10/2575—Radio-over-fibre, e.g. radio frequency signal modulated onto an optical carrier
    • H04B10/25752—Optical arrangements for wireless networks
    • H04B10/25753—Distribution optical network, e.g. between a base station and a plurality of remote units
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/022—Site diversity; Macro-diversity
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/08—Access point devices
    • H04W88/085—Access point devices with remote components

Definitions

  • the present disclosure relates to the field of communication technology, and in particular to a cell scheduling method, electronic equipment, storage medium, and distributed antenna system.
  • FIG. 1 shows a block diagram of a digital DAS.
  • the digital DAS mainly includes three parts, namely, an access unit (Access Unit, AU), an extended unit (Extended Unit, EU), and a remote unit (Remote Unit, RU).
  • the base station (BS) information source is obtained and digitally processed, and then transmitted to by optical fiber (Fiber) or cable (Cable) Expansion unit; in the expansion unit, the base station source is routed to multiple remote units by optical fiber or network cable, for example, RU1,...,RUn represents n remote units; in the remote unit, the digital signal is re-converted into a radio frequency signal , Carry out wireless communication signal coverage.
  • Digital DAS can be used for the network coverage of a single operator or multiple operators; it can be used for the network coverage of the SISO system and the network coverage of the MIMO system; it can be used for single frequency band and single standard signal
  • the network coverage can also be used for multi-band, multi-standard signal network coverage; it can be used for the remote signal coverage of a single cell, and it can also be used for the remote signal coverage of multiple cells.
  • the application scenario shown in Figure 2 mainly performs cell scheduling by setting the time range and timing switching.
  • AU obtains BS1 Signal from BS1 and digitizes it into IQ data stream through radio frequency coupling or digital access, and obtains BSm Signal from BSm and digitizes it into IQ data stream; then, AU uses Cable or Fiber to All IQ data is sent to EU; after EU obtains the IQ data of AU, it sends the correct cell signal to each RU device at a certain time according to the set rules, for example, sends BS1 Signal to RU1 at time T1. Send BSm Signal to Run; send BS1 Signal to RU1 and BS1 Signal to RUn at time T2.
  • This method is not flexible enough, especially in scenes where the number of users changes irregularly (such as sports venues, conference halls, etc.), and timing switching cannot work.
  • the embodiments of the present disclosure provide a cell scheduling method, device, electronic equipment, and distributed antenna system.
  • a cell scheduling method is provided, which is applied to a distributed antenna system.
  • the distributed antenna system includes: an access unit, an extension unit, and a plurality of remote units.
  • the access unit obtains Multiple base station signals, the method includes:
  • At least one base station signal is scheduled from the plurality of base station signals; and the at least one base station signal is routed by the extension unit to the target remote unit.
  • an electronic device including: a processor and a memory; the processor is configured to execute the steps of the method described in the first aspect by calling a program or instruction stored in the memory.
  • a non-transitory computer-readable storage medium for storing a program or instruction that causes a computer to execute the steps of the method described in the first aspect.
  • a distributed antenna system including: an access unit, an extension unit, and multiple remote units;
  • the access unit is used to obtain multiple base station signals
  • the extension unit is configured to route the multiple base station signals to the multiple remote units;
  • the remote unit is used to convert received base station signals into radio frequency signals
  • the access unit is also used to perform the steps of the method described in the first aspect; or, the extension unit is also used to perform the steps of the method described in the first aspect.
  • At least one embodiment of the present disclosure can count the number of users within the coverage of the remote unit, and then determine whether to start cell scheduling based on the number of users, and schedule at least one base station signal for the remote unit that starts cell scheduling, so as to achieve multiple operators
  • the automatic scheduling of the cell improves the application flexibility of digital DAS.
  • Figure 1 is a schematic system block diagram of a digital DAS.
  • Figure 2 is an exemplary application scenario diagram.
  • Fig. 3 is a diagram of an exemplary application scenario of the present disclosure.
  • Fig. 4 is an exemplary block diagram of a cell scheduling device provided by an exemplary embodiment of the present disclosure.
  • Fig. 5 is an exemplary block diagram of an electronic device provided by an exemplary embodiment of the present disclosure.
  • Fig. 6 is a schematic flowchart of a cell scheduling method provided by an exemplary embodiment of the present disclosure.
  • the embodiments of the present disclosure provide a cell scheduling method, electronic equipment, storage medium, or distributed antenna system (DAS), which can count the number of users within the coverage of a remote unit, and then determine whether to start cell scheduling based on the number of users, and
  • DAS distributed antenna system
  • Fig. 3 is a diagram of an exemplary application scenario of the present disclosure.
  • the digital DAS may include: AU (Access Unit), EU (Extended Unit), and multiple RUs (Remote Unit, remote units). End unit) and other devices that can be used in distributed antenna systems.
  • AU Access Unit
  • EU Extended Unit
  • RU Remote Unit
  • End unit and other devices that can be used in distributed antenna systems.
  • the AU is used to acquire signals from multiple base stations.
  • the AU can acquire base station (BS) signals through digital access or radio frequency (RF) coupling signals and perform digital processing.
  • BS1, BS2, ... , BSm means m base stations.
  • the AU may digitize the acquired base station signal into an IQ data stream.
  • the AU may use fiber or cable to transmit base station signals to the EU. For example, AU can send all IQ data to EU through network cable or optical fiber.
  • EU is used to route signals from multiple base stations to multiple RUs.
  • EU can use optical fiber or network cable to route base station signals to multiple RUs.
  • RU1,..., RUn represent n remote units.
  • the EU routes the IQ data sent by the AU to the RU.
  • the RU is used to convert received base station signals into radio frequency signals.
  • the RU converts the received IQ data into radio frequency signals, and then performs wireless communication signal coverage.
  • AU or EU is also used for automatic cell scheduling.
  • the automatic scheduling of cells is explained with AU as the executive body.
  • the AU may obtain the number of users within the coverage area of multiple RUs, where the coverage area is, for example, an area occupied by a scene where the number of users varies irregularly, such as sports venues and conference halls.
  • the AU may determine the target RU for starting cell scheduling based on the number of users, and then determine the scheduling information corresponding to the target RU.
  • the AU may schedule at least one base station signal from a plurality of base station signals based on the scheduling information, and accordingly, the at least one base station signal is routed by the EU to the target RU.
  • multiple RUs are respectively configured with an image processing device, where the image processing device is used to obtain images within the coverage area of the RU and determine the number of users in the image.
  • the image processing device may also report the determined number of users to the corresponding RU.
  • the image processing device can determine the number of users in real time and report it to the corresponding RU regularly.
  • the image processing device may be a smart camera, for example, Camera1,...,Cameran shown in FIG. 3, corresponding to RU1,...,RUn, respectively. Smart cameras can not only collect images within the coverage of RU, but also process the images to determine the number of users in the image.
  • Fig. 4 is an exemplary block diagram of a cell scheduling device provided by an embodiment of the disclosure.
  • the cell scheduling device can be applied to the AU or EU shown in FIG. 3.
  • the cell scheduling apparatus may include but is not limited to the following units: an acquiring unit 401, a first determining unit 402, a second determining unit 403, and a scheduling unit 404.
  • the acquiring unit 401 is configured to acquire the number of users in the coverage area of multiple remote units. In some embodiments, the number of users of any RU is determined by the image processing device configured by the RU. In some embodiments, the number of users of any RU is periodically sent to the RU by the image processing device. In some embodiments, the acquiring unit 401 may periodically receive the number of users sent by any RU.
  • the first determining unit 402 is configured to determine a target remote unit for starting cell scheduling based on the number of users. In some embodiments, the first determining unit 402 determines that the remote unit whose number of users is greater than a preset threshold and the base station signal is not scheduled is the target remote unit. In some embodiments, the first determining unit 402 determines that the remote unit whose number of users is less than a preset threshold and that has scheduled base station signals is the target remote unit.
  • the second determining unit 403 is used to determine the scheduling information corresponding to the target remote unit.
  • the second determining unit 403 changes or increases the base station signal for the target remote unit whose number of users is greater than a preset threshold and has not scheduled base station signals to increase the number of cells in the network, thereby increasing the success rate of users accessing the network.
  • the second determining unit 403 may determine the scheduling information of the target remote unit based on the first correspondence, where the first correspondence is that the number of users is greater than a preset threshold and the remote unit that has not scheduled base station signals and the scheduling information Correspondence between; the scheduling information includes at least one base station signal.
  • the second determining unit 403 changes or reduces the base station signal for the target remote unit whose number of users is less than a preset threshold and has scheduled base station signals to reduce the number of cells in the network, thereby expanding the coverage of a single cell and improving The signal coverage energy efficiency ratio of digital DAS.
  • the second determining unit 403 may determine the scheduling information of the target remote unit based on the second correspondence, where the second correspondence is that the number of users is less than a preset threshold and the remote unit that has scheduled base station signals and the scheduling information Correspondence between; the scheduling information includes at least one base station signal.
  • the scheduling unit 404 is configured to schedule at least one base station signal to the target remote unit. In some embodiments, the scheduling unit 404 schedules at least one base station signal from a plurality of base station signals based on the scheduling information; and the at least one base station signal is routed by the EU to the target remote unit.
  • the division of each unit in the cell scheduling apparatus is only a logical function division.
  • there may be other division methods such as the acquiring unit 401, the first determining unit 402, the second determining unit 403, and the scheduling unit.
  • At least two of the units 404 may be implemented as one unit; the acquiring unit 401, the first determining unit 402, the second determining unit 403, or the scheduling unit 404 may also be divided into multiple sub-units.
  • each unit or subunit can be implemented by electronic hardware or a combination of computer software and electronic hardware. Whether these functions are executed by hardware or software depends on the specific application and design constraint conditions of the technical solution. Those skilled in the art can use different methods for each specific application to realize the described functions.
  • FIG. 5 is a schematic structural diagram of an electronic device provided by an embodiment of the present disclosure.
  • This electronic device can be applied to the AU or EU shown in FIG. 3.
  • the electronic device includes: at least one processor 501, at least one memory 502, and at least one communication interface 503.
  • the various components in the electronic device are coupled together through the bus system 504.
  • the communication interface 503 is used for information transmission with external devices. Understandably, the bus system 504 is used to implement connection and communication between these components.
  • the bus system 504 also includes a power bus, a control bus, and a status signal bus. However, for the sake of clear description, various buses are marked as the bus system 504 in FIG. 5.
  • the memory 502 in this embodiment may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory.
  • the processor 501 calls a program or instruction stored in the memory 502, specifically, it may be a program or instruction stored in an application program.
  • the processor 501 is configured to execute each cell scheduling method provided by the embodiment of the present disclosure. Example steps.
  • the cell scheduling method provided by the embodiment of the present disclosure may be applied to the processor 501 or implemented by the processor 501.
  • the processor 501 may be an integrated circuit chip with signal processing capability. In the implementation process, the steps of the foregoing method can be completed by an integrated logic circuit of hardware in the processor 501 or instructions in the form of software.
  • the aforementioned processor 501 may be a general-purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), a ready-made programmable gate array (Field Programmable Gate Array, FPGA) or other programmable logic devices, discrete gates, or Transistor logic devices, discrete hardware components.
  • the general-purpose processor may be a microprocessor or the processor may also be any conventional processor or the like.
  • the steps of the cell scheduling method provided by the embodiments of the present disclosure may be directly embodied as being executed and completed by a hardware decoding processor, or executed and completed by a combination of hardware and software units in the decoding processor.
  • the software unit may be located in a mature storage medium in the field, such as random access memory, flash memory, read-only memory, programmable read-only memory, or electrically erasable programmable memory, registers.
  • the storage medium is located in the memory 502, and the processor 501 reads the information in the memory 502 and completes the steps of the method in combination with its hardware.
  • Fig. 6 is an exemplary flowchart of a cell scheduling method provided by an embodiment of the disclosure.
  • the execution subject of this method is an electronic device, and the electronic device can be applied to the AU or EU shown in FIG. 3.
  • an electronic device is used as an execution subject to illustrate the flow of the cell scheduling method.
  • the electronic device obtains the number of users in the coverage area of multiple remote units.
  • the electronic device can separately obtain the number of users sent by each remote unit, for example, receive the number of users sent by the remote unit regularly.
  • the number of users of any RU is determined by the image processing device configured by the RU.
  • the number of users of any RU is periodically sent to the RU by the image processing device.
  • the electronic device determines a target remote unit for starting cell scheduling based on the number of users. In some embodiments, the electronic device determines that the remote unit whose number of users is greater than a preset threshold and the base station signal is not scheduled is the target remote unit. In some embodiments, the electronic device determines that the remote unit whose number of users is less than a preset threshold and has scheduled base station signals is the target remote unit.
  • the electronic device determines the scheduling information corresponding to the target remote unit.
  • the electronic device changes or adds base station signals to target remote units whose number of users is greater than a preset threshold and base station signals are not scheduled.
  • the electronic device may determine the scheduling information of the target remote unit based on the first correspondence, where the first correspondence is the number of users greater than a preset threshold and the remote unit that does not schedule base station signals and the scheduling information Correspondence; the scheduling information includes at least one base station signal.
  • the electronic device changes or reduces the base station signal for the target remote unit whose number of users is less than a preset threshold and the base station signal has been scheduled.
  • the electronic device may determine the scheduling information of the target remote unit based on the second correspondence, where the second correspondence is the relationship between the remote unit whose number of users is less than a preset threshold and the base station signal has been scheduled and the scheduling information.
  • the scheduling information includes at least one base station signal.
  • step 604 the electronic device schedules at least one base station signal from a plurality of base station signals based on the scheduling information; and the at least one base station signal is routed by the extension unit to the target remote unit.
  • AU obtains BS1 Signal from BS1 and digitizes it into IQ data stream through radio frequency coupling or digital access (RF or digital), and obtains BSm Signal from BSm and digitizes it into IQ data stream; then, AU uses Cable or Fiber sends all IQ data to EU; each RU is connected to a smart camera, and the smart camera can count the number of users (Num) appearing in the video in real time, and send it to RU regularly.
  • RF or digital radio frequency coupling or digital access
  • the electronic device regularly reads the number of users counted by each RU and compares it with a preset threshold (N) to determine the target RU for starting cell scheduling. Specifically, the electronic device determines that the number of users Num is greater than the preset threshold N and has not scheduled base station signals as the target RU, and determines that the number of users Num is less than the preset threshold N and has scheduled base station signals as the target RU.
  • N preset threshold
  • the electronic device determines the scheduling information corresponding to the target RU, and based on the scheduling information, schedules at least one base station signal from a plurality of base station signals; and the at least one base station signal is routed by the RU to the target RU. For example, when Num>N, send BS1Signal to RU1, when Num ⁇ N, send BS2Signal to RU1; when Num>N, send BS2Signal to RUn, when Num ⁇ N, send BSm Signal sent to RUn.
  • the embodiment of the present disclosure also proposes a non-transitory computer-readable storage medium that stores a program or instruction, and the program or instruction causes a computer to execute the steps of each embodiment of the cell scheduling method, In order to avoid repetitive descriptions, I will not repeat them here.

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Abstract

本申请公开了一种小区调度方法、电子设备、存储介质及分布式天线系统，分布式天线系统包括：接入单元、扩展单元和多个远端单元，接入单元获取多个基站信号。小区调度方法包括：获取多个远端单元覆盖范围内的用户数；基于用户数确定开启小区调度的目标远端单元；确定目标远端单元对应的调度信息；基于调度信息，从多个基站信号中调度至少一个基站信号；且至少一个基站信号由扩展单元路由到目标远端单元。本公开的至少一个实施例，可统计远端单元覆盖范围内的用户数，进而基于用户数确定是否启动小区调度，并对启动小区调度的远端单元调度至少一个基站信号，实现多运营商多小区的自动调度，提升数字DAS的应用灵活性。

Description

小区调度方法、电子设备、存储介质及分布式天线系统 技术领域
本公开涉及通信技术领域，具体涉及一种小区调度方法、电子设备、存储介质及分布式天线系统。
背景技术
随着通信技术的发展，通信频段越来越多、带宽越来越宽、天线数量越来越多，为了更好的进行信号覆盖，数字化的分布式天线系统(Distributed Antenna System，DAS)的应用越来越广泛。图1示出了一种数字DAS的框图，数字DAS主要包括三个部分，分别为接入单元(Access Unit，AU)、扩展单元(Extended Unit，EU)和远端单元(RemoteUnit，RU)。在接入单元，通过数字(digital)接入或者射频(RF)耦合信号的方式，获取基站(Base Station，BS)信源并进行数字化处理，然后利用光纤(Fiber)或者网线(Cable)传输到扩展单元；在扩展单元，利用光纤或者网线把基站信源路由到多个远端单元中，例如RU1、……、RUn表示n个远端单元；在远端单元，数字信号重新转换为射频信号，进行无线通信信号覆盖。
数字DAS既可用于单一运营商的网络覆盖，也可用于多家运营商的网络覆盖；既可用于SISO系统的网络覆盖，也可用于MIMO系统的网络覆盖；既可用于单频段、单制式信号的网络覆盖，也可用于多频段、多制式信号的网络覆盖；即可用于单个小区的信号拉远覆盖，也可用于多个小区的信号拉远覆盖。
随着数字DAS应用越来越广泛，对数字DAS的智能化要求也越来越高，在多个小区信号拉远覆盖的应用场景下，希望能够增加自适应小区调度的功能：当某个小区接入的用户数比较多时，希望能够自动缩小该小区的信号覆盖范围，从而保证用户接入的成功率；当某个小区接入的用户数比较少时，希望能够扩大小区的信号覆盖范围，从而提升数字DAS信号覆盖能效比。
当前的一些数字DAS产品中，如图2所示的应用场景，主要通过设置 时间范围、定时切换的方式进行小区调度。具体地，图2中，AU通过射频耦合或者数字接入的方式，从BS1获取BS1 Signal并数字化为IQ数据流，从BSm获取BSm Signal并数字化为IQ数据流；然后，AU通过Cable或者Fiber把全部IQ数据送给EU；EU获取到AU的IQ数据后，根据设定的规则，在某个时刻把正确的小区信号送给每一个RU设备，例如，在T1时刻把BS1 Signal送给RU1、把BSm Signal送给Run；在T2时刻把BS1 Signal送给RU1、把BS1 Signal送给RUn。该方法不够灵活，特别是用户数变化比较不规律的场景(如运动场馆、会议厅等)，定时切换无法起作用。
还有一些数字DAS产品，主要靠基站统计用户数的方式进行小区调度，该方法无法应用在多运营商的数字DAS产品中，而且基站也无法识别具体是哪些远端单元的用户数较多，因此应用也比较受限。
发明内容
为了解决现有技术存在的问题，本公开的实施例提供了一种小区调度方法、装置、电子设备及分布式天线系统。
根据本公开的第一方面，提供了一种小区调度方法，应用于分布式天线系统，所述分布式天线系统包括：接入单元、扩展单元和多个远端单元，所述接入单元获取多个基站信号，所述方法包括：
获取所述多个远端单元覆盖范围内的用户数；
基于所述用户数确定开启小区调度的目标远端单元；
确定所述目标远端单元对应的调度信息；
基于所述调度信息，从所述多个基站信号中调度至少一个基站信号；且所述至少一个基站信号由所述扩展单元路由到所述目标远端单元。
根据本公开的第二方面，提供了一种电子设备，包括：处理器和存储器；所述处理器通过调用所述存储器存储的程序或指令，用于执行如第一方面所述方法的步骤。
根据本公开的第三方面，提供了一种非暂态计算机可读存储介质，用于存储程序或指令，所述程序或指令使计算机执行如第一方面所述方法的步骤。
根据本公开的第四方面，提供了一种分布式天线系统，包括：接入单元、扩展单元和多个远端单元；
所述接入单元，用于获取多个基站信号；
所述扩展单元，用于将所述多个基站信号路由到所述多个远端单元；
所述远端单元，用于将接收的基站信号转换为射频信号；
所述接入单元，还用于执行如第一方面所述方法的步骤；或，所述扩展单元，还用于执行如第一方面所述方法的步骤。
本公开的至少一个实施例，可统计远端单元覆盖范围内的用户数，进而基于用户数确定是否启动小区调度，并对启动小区调度的远端单元调度至少一个基站信号，实现多运营商多小区的自动调度，提升数字DAS的应用灵活性。
附图说明
图1是一种数字DAS的示意性系统框图。
图2是一种示例性应用场景图。
图3是本公开一种示例性应用场景图。
图4是本公开一示例性实施例提供的一种小区调度装置的示例性框图。
图5是本公开一示例性实施例提供的一种电子设备的示例性框图。
图6是本公开一示例性实施例提供的一种小区调度方法的流程示意图。
具体实施方式
本公开实施例提供了一种小区调度方法、电子设备、存储介质或分布式天线系统(DAS)，可统计远端单元覆盖范围内的用户数，进而基于用户数确定是否启动小区调度，并对启动小区调度的远端单元调度至少一个基站信号，实现多运营商多小区的自动调度，提升数字DAS的应用灵活性。应当理解的是，本公开的方法的应用场景(如图3所示)仅仅是本公开的一些示例或实施例，对于本领域的普通技术人员来讲，在不付出创造性劳动的前提下，还可以将本公开应用于其他类似情景。
图3是本公开一种示例性应用场景图，如图3所示，数字DAS可包括： AU(Access Unit，接入单元)、EU(Extended Unit，扩展单元)和多个RU(RemoteUnit，远端单元)以及其他可用于分布式天线系统的设备。
AU用于获取多个基站信号。在一些实施例中，AU可通过数字(digital)接入或者射频(RF)耦合信号的方式，获取基站(Base Station，BS)信号并进行数字化处理，例如图3中，BS1、BS2、……、BSm表示表示m个基站。在一些实施例中，AU可将获取的基站信号数字化为IQ数据流。在一些实施例中，AU可利用光纤(Fiber)或者网线(Cable)传输基站信号到EU。例如，AU可通过网线或者光纤把全部IQ数据送给EU。
EU用于将多个基站信号路由到多个RU。图3中，EU可利用光纤或者网线把基站信号路由到多个RU中，例如RU1、……、RUn表示n个远端单元。在一些实施例中，EU将AU发送的IQ数据路由到RU。
RU用于将接收的基站信号转换为射频信号。在一些实施例中，RU将接收到的IQ数据转换为射频信号，进而进行无线通信信号覆盖。
在一些实施例中，AU或者EU还用于进行小区自动调度。为便于描述，以AU为执行主体说明小区自动调度。在一些实施例中，AU可获取多个RU覆盖范围内的用户数，其中，覆盖范围例如为运动场馆、会议厅等用户数变化不规律的场景所占区域。在一些实施例中，AU可基于用户数确定开启小区调度的目标RU，进而确定目标RU对应的调度信息。在一些实施例中，AU可基于调度信息，从多个基站信号中调度至少一个基站信号，相应地，且至少一个基站信号由EU路由到目标RU。
在一些实施例中，多个RU分别配置有一个图像处理设备，其中，图像处理设备用于获取RU覆盖范围内的图像并确定图像中的用户数。在一些实施例中，图像处理设备还可以将确定的用户数上报给对应的RU。例如，图像处理设备可实时确定用户数，并定时上报给对应的RU。在一些实施例中，图像处理设备可以为智能摄像头，例如图3中所示的Camera1、……、Cameran，分别对应RU1、……、RUn。智能摄像头不仅能采集RU覆盖范围内的图像，而且能对图像进行处理，确定图像中的用户数。
图4为本公开实施例提供的一种小区调度装置的示例性框图。在一些实 施例中，小区调度装置可以应用到图3所示的AU或者EU。如图4所示，小区调度装置可包括但不限于以下单元：获取单元401、第一确定单元402、第二确定单元403和调度单元404。
获取单元401，用于获取多个远端单元覆盖范围内的用户数。在一些实施例中，任一RU的用户数由该RU配置的图像处理设备确定。在一些实施例中，任一RU的用户数由图像处理设备定时发送给该RU。在一些实施例中，获取单元401可定时接收任一RU发送的用户数。
第一确定单元402，用于基于用户数确定开启小区调度的目标远端单元。在一些实施例中，第一确定单元402确定用户数大于预设门限且未调度基站信号的远端单元为目标远端单元。在一些实施例中，第一确定单元402确定用户数小于预设门限且已调度基站信号的远端单元为目标远端单元。
第二确定单元403，用于确定目标远端单元对应的调度信息。在一些实施例中，第二确定单元403对于用户数大于预设门限且未调度基站信号的目标远端单元，变更或增加基站信号，增加网络的小区数，从而提高用户接入网络的成功率。在一些实施例中，第二确定单元403可基于第一对应关系确定目标远端单元的调度信息，其中第一对应关系为用户数大于预设门限且未调度基站信号的远端单元与调度信息之间的对应关系；所述调度信息包括至少一个基站信号。在一些实施例中，第二确定单元403对于用户数小于预设门限且已调度基站信号的目标远端单元，变更或减少基站信号，减少网络的小区数，从而扩大单小区的覆盖范围，提高数字DAS的信号覆盖能效比。在一些实施例中，第二确定单元403可基于第二对应关系确定目标远端单元的调度信息，其中第二对应关系为用户数小于预设门限且已调度基站信号的远端单元与调度信息之间的对应关系；所述调度信息包括至少一个基站信号。
调度单元404，用于给目标远端单元调度至少一个基站信号。在一些实施例中，调度单元404基于调度信息，从多个基站信号中调度至少一个基站信号；且至少一个基站信号由EU路由到目标远端单元。
在一些实施例中，小区调度装置中各单元的划分仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如获取单元401、第一确定单元402、 第二确定单元403和调度单元404中的至少两个单元可以实现为一个单元；获取单元401、第一确定单元402、第二确定单元403或调度单元404也可以划分为多个子单元。可以理解的是，各个单元或子单元能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行，取决于技术方案的特定应用和设计约束条件。本领域技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能。
图5是本公开实施例提供的一种电子设备的结构示意图。该电子设备可应用到图3所示的AU或者EU。如图5所示，电子设备包括：至少一个处理器501、至少一个存储器502和至少一个通信接口503。电子设备中的各个组件通过总线系统504耦合在一起。通信接口503，用于与外部设备之间的信息传输。可理解地，总线系统504用于实现这些组件之间的连接通信。总线系统504除包括数据总线之外，还包括电源总线、控制总线和状态信号总线。但为了清楚说明起见，在图5中将各种总线都标为总线系统504。
可以理解，本实施例中的存储器502可以是易失性存储器或非易失性存储器，或可包括易失性和非易失性存储器两者。
在本公开实施例中，处理器501通过调用存储器502存储的程序或指令，具体的，可以是应用程序中存储的程序或指令，处理器501用于执行本公开实施例提供的小区调度方法各实施例的步骤。
本公开实施例提供的小区调度方法可以应用于处理器501中，或者由处理器501实现。处理器501可以是一种集成电路芯片，具有信号的处理能力。在实现过程中，上述方法的各步骤可以通过处理器501中的硬件的集成逻辑电路或者软件形式的指令完成。上述的处理器501可以是通用处理器、数字信号处理器(DigitalSignalProcessor，DSP)、专用集成电路(ApplicationSpecificIntegratedCircuit，ASIC)、现成可编程门阵列(FieldProgrammableGateArray，FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。
本公开实施例提供的小区调度方法的步骤可以直接体现为硬件译码处 理器执行完成，或者用译码处理器中的硬件及软件单元组合执行完成。软件单元可以位于随机存储器，闪存、只读存储器，可编程只读存储器或者电可擦写可编程存储器、寄存器等本领域成熟的存储介质中。该存储介质位于存储器502，处理器501读取存储器502中的信息，结合其硬件完成方法的步骤。
图6为本公开实施例提供的一种小区调度方法的示例性流程图。该方法的执行主体为电子设备，该电子设备可应用到图3所示的AU或者EU。为便于描述，以下实施例中以电子设备为执行主体说明小区调度方法的流程。
如图6所示，在步骤601中，电子设备获取多个远端单元覆盖范围内的用户数。在一些实施例中，电子设备可分别获取每个远端单元发送的用户数，例如，定时接收远端单元发送的用户数。在一些实施例中，任一RU的用户数由该RU配置的图像处理设备确定。在一些实施例中，任一RU的用户数由图像处理设备定时发送给该RU。
在步骤602中，电子设备基于用户数确定开启小区调度的目标远端单元。在一些实施例中，电子设备确定用户数大于预设门限且未调度基站信号的远端单元为目标远端单元。在一些实施例中，电子设备确定用户数小于预设门限且已调度基站信号的远端单元为目标远端单元。
在步骤603中，电子设备确定目标远端单元对应的调度信息。在一些实施例中，电子设备对于用户数大于预设门限且未调度基站信号的目标远端单元，变更或增加基站信号。在一些实施例中，电子设备可基于第一对应关系确定目标远端单元的调度信息，其中第一对应关系为用户数大于预设门限且未调度基站信号的远端单元与调度信息之间的对应关系；所述调度信息包括至少一个基站信号。在一些实施例中，电子设备对于用户数小于预设门限且已调度基站信号的目标远端单元，变更或减少基站信号。在一些实施例中，电子设备可基于第二对应关系确定目标远端单元的调度信息，其中第二对应关系为用户数小于预设门限且已调度基站信号的远端单元与调度信息之间的对应关系；所述调度信息包括至少一个基站信号。
在步骤604中，电子设备基于调度信息，从多个基站信号中调度至少一 个基站信号；且至少一个基站信号由扩展单元路由到目标远端单元。
结合附图3，以电子设备为执行主体描述小区调度方法的流程。
图3中，AU通过射频耦合或者数字接入(RF or digital)的方式，从BS1获取BS1 Signal并数字化为IQ数据流，从BSm获取BSm Signal并数字化为IQ数据流；然后，AU通过Cable或者Fiber把全部IQ数据送给EU；每个RU外接一个智能摄像头，智能摄像头可以实时统计出视频中出现的用户数(Num)，并定时送给RU。
电子设备定时读取每个RU所统计到的用户数，并与预设门限(N)进行比较，确定开启小区调度的目标RU。具体地，电子设备确定用户数Num大于预设门限N且未调度基站信号的RU为目标RU，以及确定用户数Num小于预设门限N且已调度基站信号的RU为目标RU。
电子设备确定目标RU对应的调度信息，基于调度信息，从多个基站信号中调度至少一个基站信号；且至少一个基站信号由RU路由到目标RU。例如，当Num>N时，把BS1 Signal送给RU1，当Num<N时，则把BS2 Signal送给RU1；当Num>N时，把BS2 Signal送给RUn，当Num<N时，则把BSm Signal送给RUn。
本公开实施例还提出一种非暂态计算机可读存储介质，所述非暂态计算机可读存储介质存储程序或指令，所述程序或指令使计算机执行如小区调度方法各实施例的步骤，为避免重复描述，在此不再赘述。

Claims (12)

  1. 一种小区调度方法，其特征在于，应用于分布式天线系统，所述分布式天线系统包括：接入单元、扩展单元和多个远端单元，所述接入单元获取多个基站信号，所述方法包括：
    获取所述多个远端单元覆盖范围内的用户数；
    基于所述用户数确定开启小区调度的目标远端单元；
    确定所述目标远端单元对应的调度信息；
    基于所述调度信息，从所述多个基站信号中调度至少一个基站信号；且所述至少一个基站信号由所述扩展单元路由到所述目标远端单元。
  2. 根据权利要求1所述的方法，其特征在于，所述多个远端单元分别配置有一个图像处理设备，所述图像处理设备用于获取远端单元覆盖范围内的图像，确定所述图像中的用户数并将所述用户数上报对应的远端单元；
    相应地，获取所述多个远端单元覆盖范围内的用户数包括：接收远端单元发送的用户数。
  3. 根据权利要求1所述的方法，其特征在于，基于所述用户数确定开启小区调度的目标远端单元包括：
    确定所述用户数大于预设门限且未调度基站信号的远端单元为目标远端单元。
  4. 根据权利要求3所述的方法，其特征在于，确定所述目标远端单元对应的调度信息包括：
    变更或增加基站信号。
  5. 根据权利要求4所述的方法，其特征在于，确定所述目标远端单元对应的调度信息包括：
    基于第一对应关系确定所述目标远端单元的调度信息，其中，所述第一对应关系为用户数大于预设门限且未调度基站信号的远端单元与调度信息之间的对应关系；所述调度信息包括至少一个基站信号。
  6. 根据权利要求1所述的方法，其特征在于，基于所述用户数确定开启小区调度的目标远端单元包括：
    确定所述用户数小于预设门限且已调度基站信号的远端单元为目标远端单元。
  7. 根据权利要求6所述的方法，其特征在于，确定所述目标远端单元对应的调度信息包括：
    变更或减少基站信号。
  8. 根据权利要求7所述的方法，其特征在于，确定所述目标远端单元对应的调度信息包括：
    基于第二对应关系确定所述目标远端单元的调度信息，其中，所述第二对应关系为用户数小于预设门限且已调度基站信号的远端单元与调度信息之间的对应关系；所述调度信息包括至少一个基站信号。
  9. 一种电子设备，其特征在于，包括：处理器和存储器；
    所述处理器通过调用所述存储器存储的程序或指令，用于执行如权利要求1至8任一项所述方法的步骤。
  10. 一种非暂态计算机可读存储介质，其特征在于，所述非暂态计算机可读存储介质存储程序或指令，所述程序或指令使计算机执行如权利要求1至8任一项所述方法的步骤。
  11. 一种分布式天线系统，其特征在于，包括：接入单元、扩展单元和多个远端单元；
    所述接入单元，用于获取多个基站信号；
    所述扩展单元，用于将所述多个基站信号路由到所述多个远端单元；
    所述远端单元，用于将接收的基站信号转换为射频信号；
    所述接入单元，还用于执行如权利要求1至8任一项所述方法的步骤；或，所述扩展单元，还用于执行如权利要求1至8任一项所述方法的步骤。
  12. 根据权利要求11所述的系统，其特征在于，所述多个远端单元分别配置有一个图像处理设备，所述图像处理设备用于获取远端单元覆盖范围 内的图像，确定所述图像中的用户数并将所述用户数上报对应的远端单元。
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