WO2021189699A1 - 一种动态宽带跟踪方法、装置、存储介质 - Google Patents

一种动态宽带跟踪方法、装置、存储介质 Download PDF

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WO2021189699A1
WO2021189699A1 PCT/CN2020/099552 CN2020099552W WO2021189699A1 WO 2021189699 A1 WO2021189699 A1 WO 2021189699A1 CN 2020099552 W CN2020099552 W CN 2020099552W WO 2021189699 A1 WO2021189699 A1 WO 2021189699A1
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bandwidth
terminal
time slot
information quantity
allocated
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PCT/CN2020/099552
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English (en)
French (fr)
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赵辉
张奭
张�诚
梁安忠
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北京瀚诺半导体科技有限公司
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Publication of WO2021189699A1 publication Critical patent/WO2021189699A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/08—Configuration management of networks or network elements
    • H04L41/0896—Bandwidth or capacity management, i.e. automatically increasing or decreasing capacities
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0446—Resources in time domain, e.g. slots or frames

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  • the invention relates to the field of TDMA-based broadband access, in particular to a dynamic broadband tracking method, device and storage medium.
  • the bandwidth resources are multiplexed by multiple users through time slot division, that is, the uplink or downlink channel time is divided into several time slots and allocated to one or more users.
  • the system usually consists of two parts, one is the central office, and the other is multiple terminals.
  • the central office controls and allocates the time slots that the terminal accesses, and the terminal uses the allocated time slots to communicate with the central office. Multiple consecutive time slots constitute a scheduling cycle, and the central office re-plans the time slot allocation for the next cycle at the end of each scheduling cycle, and informs each terminal.
  • the common method of time slot allocation is that the terminal sends its own queue length, service requirements and other information to the central office, and initiates a bandwidth request to the central office; the central office maps the bandwidth allocation result to time slot allocation information according to the bandwidth request information of the terminal , And encapsulate the result in a specific signaling frame, such as a bandwidth allocation map (MAP frame), and periodically send it to the terminal, and the terminal performs data communication according to the allocation plan indicated by the MAP frame.
  • MAP frame bandwidth allocation map
  • the above-mentioned broadband allocation method of the TDMA broadband access system is based on the request and allocation method, that is, the terminal reports the requested bandwidth to the central office, and the central office allocates bandwidth to the terminal according to the remaining system bandwidth.
  • the embodiments of the present application provide a dynamic broadband tracking method, device, and storage medium.
  • a brief summary is given below. This summary is not a general comment, nor is it intended to determine key/important elements or describe the scope of protection of these embodiments. Its sole purpose is to present some concepts in a simple form as a prelude to the detailed description that follows.
  • an embodiment of the present application provides a dynamic broadband tracking method, and the method includes:
  • the allocated bandwidth of each terminal is recalculated based on the bandwidth duty ratio of each terminal.
  • the dynamic bandwidth tracking method is repeatedly executed according to a preset period.
  • the dynamic bandwidth tracking method is suitable for bandwidth tracking in the downlink or uplink direction:
  • each terminal time slot refers to the downlink time slot allocated to each terminal, and the effective information quantity refers to the number of bytes or frames actually sent by the central office in the downlink time slot.
  • the total information quantity refers to the maximum number of bytes or frames that can be transmitted in the downlink time slot;
  • each terminal time slot refers to the uplink time slot allocated to each terminal, and the effective information quantity refers to the number of bytes or frames actually received by the central office in the uplink time slot,
  • the total amount of information refers to the maximum number of bytes or frames that can be transmitted in the uplink time slot.
  • the recalculating the allocated bandwidth of each terminal based on the bandwidth duty ratio of each terminal includes:
  • the central office allocates the first bandwidth to the terminal;
  • the central office allocates the second bandwidth to the terminal;
  • the terminal bandwidth is not adjusted, that is, the current allocated bandwidth of the terminal remains unchanged;
  • the first preset value is greater than the second preset value.
  • the bandwidth duty ratio, the value range is 0 ⁇ 1, ⁇ 2 is the bandwidth adjustment factor, ⁇ 2 ⁇ 1, and MIN(,) is the smaller value operation.
  • an embodiment of the present application provides a dynamic broadband tracking device, the device including:
  • the information quantity acquisition module is used to acquire the effective information quantity and the total information quantity in the time slot of each terminal;
  • a duty cycle calculation module configured to calculate and generate the bandwidth duty cycle of each terminal, where the bandwidth duty cycle is the ratio of the effective information quantity to the total information quantity;
  • the broadband calculation module recalculates the allocated bandwidth of each terminal based on the bandwidth duty ratio of each terminal.
  • an embodiment of the present application provides a storage medium that stores a plurality of instructions, and the instructions are suitable for being loaded by a processor and executing the above method steps.
  • the central office first obtains the effective information quantity and the total information quantity in each terminal's time slot, and then calculates and generates the bandwidth duty ratio of each terminal, where the bandwidth duty ratio is the effective information quantity And the ratio of the total amount of information, and finally the allocated bandwidth of each terminal is recalculated based on the bandwidth duty ratio of each terminal.
  • the central office only needs to record the number of effective information sent or received by each terminal and the total number of information after the end of each scheduling period, without the need for the terminal to provide other additional information, so as not to increase the system signaling interaction
  • the bandwidth of the terminal can be dynamically tracked in real time and the system bandwidth utilization rate can be improved.
  • FIG. 1 is a schematic flowchart of a dynamic bandwidth tracking method provided by an embodiment of the present application
  • FIG. 2 is a schematic diagram of bandwidth allocation of a HINOC system provided by an embodiment of the present application
  • FIG. 3 is a schematic diagram of the HINOC uplink bandwidth tracking process provided by an embodiment of the present application.
  • FIG. 4 is a schematic diagram of a device for dynamically tracking a request broadband device provided by an embodiment of the present application
  • the TDMA system's method for time slot allocation is that the terminal sends its own queue length, service requirements and other information to the central office, and initiates a bandwidth request to the central office; the central office maps the bandwidth allocation result to the central office based on the bandwidth request information of the terminal.
  • Time slot allocation information, and the result is encapsulated in a specific signaling frame, such as a bandwidth allocation map (MAP frame), which is periodically sent to the terminal, and the terminal performs data communication according to the allocation plan indicated by the MAP frame.
  • MAP frame bandwidth allocation map
  • the above-mentioned broadband allocation method of the TDMA broadband access system is based on the request and allocation method, that is, the terminal reports the requested bandwidth to the central office, and the central office allocates bandwidth to the terminal according to the remaining system bandwidth.
  • the central office only needs to record the number of effective information sent or received by each terminal and the total number of information after the end of each scheduling period, without the need for the terminal to provide other additional information, so as not to increase the system signaling interaction.
  • the bandwidth of the terminal can be dynamically tracked in real time, and the utilization rate of the system bandwidth can be improved.
  • the dynamic broadband tracking method provided by the embodiment of the present application will be described in detail below with reference to FIGS. 1 to 4.
  • the method can be implemented by a program, and can be run on a dynamic broadband tracking device based on the Von Neumann system.
  • the program can be integrated in the application or run as an independent tool application.
  • FIG. 1 provides a schematic flowchart of a dynamic broadband tracking method based on an embodiment of this application.
  • the embodiment of the present application takes the High Performance Network Over Coax (HINOC) as an example to illustrate the specific implementation of the present invention.
  • HINOC High Performance Network Over Coax
  • the method of the embodiment of the present application may include the following steps:
  • S101 Acquire the number of effective information and the total number of information in the time slot of each terminal;
  • HINOC is a transmission solution from the optical fiber network to the user's home network in the "three-network integration" scheme.
  • this technology can use the residential corridors and indoor cable television coaxial cables that have been laid and distributed widely to construct a high-speed information access network. Only need to add related HINOC modem device headend (HINOC Bridge, HB) and terminal (HINOC Modem, HM) in the corridor and indoor, without any modification to the home cable line, it can realize a variety of high-speed data services The two-way transmission.
  • HINOC technology has been developed to HINOC2.0.
  • the media access control protocol of HINOC2.0 provides a more flexible allocation method for users' bandwidth allocation.
  • HINOC protocol bandwidth allocation is shown in Figure 2.
  • the HINOC protocol works in TDD/TDMA mode, with a MAP cycle as the basic communication cycle; each MAP cycle contains 146 time slots, which can be used for uplink or downlink, among which the 5th to the 7th time slot Each time slot is a fixed 3 downlink time slots, which are mainly used to send control frames, that is, MAP frames.
  • HB is responsible for the allocation of uplink and downlink bandwidth resources for each HM.
  • HB broadcasts the MAP frame to each HM, and announces the bandwidth allocation plan for the next MAP cycle.
  • the HM side parses the MAP frame sent from the HB to obtain the bandwidth allocation plan, and performs data transmission and reception strictly according to the bandwidth allocation plan.
  • Fig. 3 is a flow chart of HINOC uplink bandwidth dynamic tracking requested bandwidth according to the first embodiment of the present invention. Combining Fig. 3, this embodiment will be described as an example of bandwidth allocation in the upstream direction. The specific implementation steps are as follows:
  • Step 1 After HM is initialized and goes online, HB allocates preset uplink bandwidth to HM; the bandwidth value can be the information obtained by HB from the remote network management server, or the maximum bandwidth that HM can obtain;
  • Step 2 In each scheduling period (referred to as the MAP period in the HINOC network), after HB sends MAP frames, HB records the number of data frames received in a scheduling period F rx (that is, the number of effective information) in each online HM. ), that is, the number of valid messages, and calculate the maximum number of data frames F max (that is, the total number of messages) that can be transmitted in a scheduling period on each online HM.
  • F rx that is, the number of effective information
  • F max that is, the total number of messages
  • F max is calculated as the uplink bandwidth allocated by each online HM in the previous scheduling period multiplied by the length of the scheduling period divided by the bit length of each data frame.
  • the value of F max can be calculated as 60e6*2.53e- 3/1728 ⁇ 87.
  • S102 Calculate and generate a bandwidth duty cycle of each terminal, where the bandwidth duty cycle is a ratio of the effective information quantity to the total information quantity;
  • the maximum number of frames that can be transmitted in the last scheduling period of a certain HM is 87. If the number of frames actually received by HB is 60, then the bandwidth duty ratio of the certain terminal is 60/87 ⁇ 0.69 .
  • the bandwidth duty cycle can intuitively reflect the effective use of the allocated bandwidth by the terminal.
  • S103 Recalculate the allocated bandwidth of each terminal based on the bandwidth duty ratio of each terminal.
  • Step 4.1 Compare the bandwidth duty cycle with a preset threshold T 1 , where the preset threshold T 1 has a value range of 0 ⁇ T 1 ⁇ 1. If the bandwidth duty cycle is greater than or equal to T 1 , skip to step 4.2, otherwise skip to step 4.2;
  • Step 4.2 Update the allocated bandwidth of the HM to the first bandwidth.
  • the general principle is that the first bandwidth BW 1 is not less than the current allocated bandwidth BW 0 of the HM.
  • BW 1 is bW 0 multiplied by a factor greater than 1.
  • BW 1 is BW 0 plus a bandwidth adjustment constant greater than 0.
  • this step is that it is detected that the bandwidth occupancy is relatively large, and the current allocated bandwidth may not be able to meet the service transmission, and then the allocated bandwidth of the HM needs to be increased, and the magnitude of the increase is controlled by ⁇ 1 or ⁇ 1 ;
  • Step 4.3 compare the bandwidth duty cycle with a preset threshold T 2 , where the preset threshold T 1 has a value range of 0 ⁇ T 2 ⁇ T 1 , if the bandwidth duty cycle is less than or equal to T 2 , jump to Step 4.4, otherwise skip to step 4.5;
  • Step 4.4 Update the allocated bandwidth of the HM to the second bandwidth.
  • the general principle is that the second bandwidth BW 2 is not greater than the current allocated bandwidth BW 0 of the HM.
  • BW 2 is BW 0 multiplied by a factor not greater than 1.
  • BW 2 is bW 0 minus the bandwidth adjustment constant greater than 0.
  • This step is that it is detected that the bandwidth duty is relatively small, and there is a possibility that the current allocated bandwidth cannot be wasted, and then the allocated bandwidth of the HM needs to be reduced, and the magnitude of the reduction is controlled by ⁇ 1 or ⁇ 1 ;
  • step 4.5 the allocated bandwidth of the HM remains unchanged.
  • the physical meaning of this step is to detect that the bandwidth duty cycle is in an appropriate range, and there is no need to adjust the allocated bandwidth;
  • Step 4.2, step 4.4, and step 4.5 are executed and then return to step 2, that is, the above-mentioned dynamic bandwidth tracking method is periodically executed.
  • uplink bandwidth tracking is taken as an example. This embodiment is also applicable when only the downlink bandwidth is tracked or the uplink and downlink bandwidth is tracked.
  • the central office first obtains the effective information quantity and the total information quantity in each terminal's time slot, and then calculates and generates the bandwidth duty ratio of each terminal, where the bandwidth duty ratio is the effective information quantity And the ratio of the total amount of information, and finally the allocated bandwidth of each terminal is recalculated based on the bandwidth duty ratio of each terminal.
  • the central office only needs to record the number of effective information sent or received by each terminal and the total number of information after the end of each scheduling period, without the need for the terminal to provide other additional information, so as not to increase the system signaling interaction
  • the bandwidth of the terminal can be dynamically tracked in real time and the system bandwidth utilization rate can be improved.
  • FIG. 4 shows a schematic structural diagram of a dynamic broadband tracking device provided by an exemplary embodiment of the present invention.
  • the dynamic broadband tracking device can be implemented as all or a part of the terminal through software, hardware or a combination of the two.
  • the device 1 includes an information quantity acquisition module 10, a duty cycle calculation module 20, and a broadband calculation module 30.
  • the information quantity obtaining module 10 is used to obtain the effective information quantity and the total information quantity in the time slot of each terminal;
  • the duty cycle calculation module 20 is configured to calculate and generate the bandwidth duty cycle of each terminal, where the bandwidth duty cycle is the ratio of the effective information quantity to the total information quantity;
  • the broadband calculation module 30 recalculates the allocated bandwidth of each terminal based on the bandwidth duty ratio of each terminal.
  • the dynamic broadband tracking device provided in the above embodiment executes the dynamic broadband tracking method
  • only the division of the above functional modules is used as an example for illustration.
  • the above functions can be assigned to different functions according to needs.
  • Module completion that is, the internal structure of the device is divided into different functional modules to complete all or part of the functions described above.
  • the dynamic broadband tracking device provided in the foregoing embodiment and the dynamic broadband tracking method embodiment belong to the same concept.
  • the implementation process of the dynamic broadband tracking method please refer to the method embodiment, which will not be repeated here.
  • the central office first obtains the effective information quantity and the total information quantity in each terminal's time slot, and then calculates and generates the bandwidth duty ratio of each terminal, where the bandwidth duty ratio is the effective information quantity And the ratio of the total amount of information, and finally the allocated bandwidth of each terminal is recalculated based on the bandwidth duty ratio of each terminal.
  • the central office only needs to record the number of effective information sent or received by each terminal and the total number of information after the end of each scheduling period, without the need for the terminal to provide other additional information, so as not to increase the system signaling interaction
  • the bandwidth of the terminal can be dynamically tracked in real time and the system bandwidth utilization rate can be improved.
  • the present invention also provides a readable medium on which program instructions are stored, and when the program instructions are executed by a processor, the dynamic broadband tracking method provided by the foregoing method embodiments is implemented.
  • the present invention also provides a program product containing instructions, which when run on a computer, causes the computer to execute the dynamic broadband tracking method described in the above-mentioned various method embodiments.
  • the program can be stored in a computer readable storage medium. When executed, it may include the procedures of the above-mentioned method embodiments.
  • the storage medium can be a magnetic disk, an optical disc, a read-only storage memory, or a random storage memory, etc.

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Abstract

本发明公开了一种动态宽带跟踪方法、装置、存储介质，所述方法包括：获取各终端时隙内的有效信息数量和总信息数量；计算生成所述各终端的带宽占空比，所述带宽占空比为所述有效信息数量和总信息数量的比值；基于所述各终端的带宽占空比重新计算各终端的分配带宽。因此，采用本申请实施例，可以提高系统带宽利用率。

Description

一种动态宽带跟踪方法、装置、存储介质 技术领域
本发明涉及基于TDMA的宽带接入领域，特别涉及一种动态宽带跟踪方法、装置、存储介质。
背景技术
基于时分多址(TDMA)的宽带接入系统，带宽资源是通过时隙划分的方式进行多用户复用的，即将上行或下行信道时间分成若干个时隙，并分给一个或者多个用户使用。系统通常包含两个部分，一是局端，另一部分是多个终端。局端控制并分配终端接入的时隙，终端使用分到的时隙与局端进行通信。多个连续的时隙构成一个调度周期，局端在每个调度周期的结束重新规划下一个周期的时隙分配，并通告各个终端。
目前普遍的时隙分配方法是，终端给局端发送自身的队列长度，业务需求等信息，向局端发起带宽请求；局端根据终端的带宽请求信息，将带宽分配结果映射成时隙分配信息，并将结果封装在特定的信令帧，如带宽分配映射图(MAP帧)，周期性的发给终端，终端按MAP帧指示的分配方案进行数据通信。上述这种TDMA宽带接入系统的宽带分配方法是基于请求、分配的方法，即终端向局端报告请求的带宽，局端根据系统带宽剩余情况为终端分配带宽。这种方法的不足之处在于：(1)带宽分配的过程中需要进行信令的交互。有的带宽分配方法需要上报的内容较多，如队列长度，业务类型，终端类型等，这些额外信息及其运算增加了系统的开销以及终端实现的复杂度；(2)在TDMA系统中，局端周期性发送的带宽分配信令帧不能在本周期内生效，即带宽分配信令帧从发送到生效具有一定的时延。这是TDMA系统固有的，因此终端上报的信息不能反应实时的带宽需求，从而导致终端分到的带宽不足或者浪费，影响整体系统的性能。
发明内容
本申请实施例提供了一种动态宽带跟踪方法、装置、存储介质。为了对披 露的实施例的一些方面有一个基本的理解，下面给出了简单的概括。该概括部分不是泛泛评述，也不是要确定关键/重要组成元素或描绘这些实施例的保护范围。其唯一目的是用简单的形式呈现一些概念，以此作为后面的详细说明的序言。
第一方面，本申请实施例提供了一种动态宽带跟踪方法，所述方法包括：
获取各终端时隙内的有效信息数量和总信息数量；
计算生成所述各终端的带宽占空比，所述带宽占空比为所述有效信息数量和总信息数量的比值；
基于所述各终端的带宽占空比重新计算各终端的分配带宽。
可选的，所述动态带宽跟踪的方法按照预设周期重复执行。
可选的，所述动态带宽跟踪的方法适用于下行或上行方向的带宽跟踪：
当用于下行带宽跟踪时，所述各终端时隙是指分配给各终端的下行时隙，所述有效信息数量是指局端在下行时隙中实际发送的字节数量或帧数量，所述总信息数量是指下行时隙可以传输的最大字节数量或帧数量；
当用于上行带宽跟踪时，所述各终端时隙是指分配给各终端的上行时隙，所述有效信息数量是指局端在上行时隙中实际接收到的字节数量或帧数量，所述总信息数量是指上行时隙可以传输的最大字节数量或帧数量。
可选的，所述基于所述各终端的带宽占空比重新计算各终端的分配带宽，包括：
当所述带宽占空比大于或等于第一预设值时，局端给终端分配第一带宽；
当所述带宽占空比小于或等于第二预设值时，局端给终端分配第二带宽；
当所述带宽占空比大于第二预设值且小于第一预设值时，不调整终端宽带,即终端当前分配带宽保持不变；
所述第一预设值大于所述第二预设值。
可选的，所述第一带宽的计算公式为BW 1＝MIN(BW 0×β 1,BW max)，其中BW 1为所述第一宽带，BW 0表示所述当前分配带宽，BW max表示终端可以分配的最大带宽,取值范围是0≤θ≤1,β 1为带宽调整因子,β 1>1，MIN(,)为取较小值操作。
可选的，所述第一带宽的计算公式为BW 1＝MIN(BW 0+Δ 1,BW max)，其 中BW 1为第一宽带，BW 0表示所述当前分配带宽，BW max表示终端可以分配的最大带宽，Δ1表示带宽调整常数，Δ 1>0，MIN(,)为取较小值操作。
可选的，所述第二带宽的计算公式为BW 2＝MIN(BW 0×θ×β 2,BW 0)，其中BW 2为第二宽带，BW 0表所述当前分配带宽，θ表示所述带宽占空比,取值范围是0≤θ≤1,β 2为带宽调整因子,β 2≥1，MIN(,)为取较小值操作。
可选的，所述第二带宽的计算公式为BW 2＝MAX(BW0-Δ 2,0)，其中BW 2为分配的第一宽带，BW 0表示当前的分配带宽，Δ 2表示带宽调整常数，Δ 2>0，MAX(,)为取较大值操作。
第二方面，本申请实施例提供了一种动态宽带跟踪装置，所述装置包括：
信息数量获取模块，用于获取各终端时隙内的有效信息数量和总信息数量；
占空比计算模块，用于计算生成所述各终端的带宽占空比，所述带宽占空比为所述有效信息数量和总信息数量的比值；
宽带计算模块，基于所述各终端的带宽占空比重新计算各终端的分配带宽。
第三方面，本申请实施例提供一种存储介质，所述存储介质存储有多条指令，所述指令适于由处理器加载并执行上述的方法步骤。
本申请实施例提供的技术方案可以包括以下有益效果：
在本申请实施例中，局端首先获取各终端时隙内的有效信息数量和总信息数量，然后计算生成所述各终端的带宽占空比，所述带宽占空比为所述有效信息数量和总信息数量的比值，最后基于所述各终端的带宽占空比重新计算各终端的分配带宽。在本申请中，局端在每一个调度周期结束之后只需记录每个终端的发送或接收到的有效信息数量和总信息数量，无需终端提供其他额外的信息，从而在不增加系统信令交互的前提下，可以实时动态跟踪终端的带宽，提高系统带宽利用率。
应当理解的是，以上的一般描述和后文的细节描述仅是示例性和解释性的，并不能限制本发明。
附图说明
此处的附图被并入说明书中并构成本说明书的一部分，示出了符合本发明的实施例，并与说明书一起用于解释本发明的原理。
图1是本申请实施例提供的一种动态带宽跟踪方法流程示意图；
图2是本申请实施例提供的一种HINOC系统带宽分配示意图；；
图3是本申请实施例提供的HINOC上行带宽跟踪流程示意图；
图4是本申请实施例提供的一种动态跟踪请求宽带装置的装置示意图；
具体实施方式
以下描述和附图充分地示出本发明的具体实施方案，以使本领域的技术人员能够实践它们。
应当明确，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它实施例，都属于本发明保护的范围。
下面的描述涉及附图时，除非另有表示，不同附图中的相同数字表示相同或相似的要素。以下示例性实施例中所描述的实施方式并不代表与本发明相一致的所有实施方式。相反，它们仅是如所附权利要求书中所详述的、本发明的一些方面相一致的装置和方法的例子。
在本发明的描述中，需要理解的是，术语“第一”、“第二”等仅用于描述目的，而不能理解为指示或暗示相对重要性。对于本领域的普通技术人员而言，可以具体情况理解上述术语在本发明中的具体含义。此外，在本发明的描述中，除非另有说明，“多个”是指两个或两个以上。“和/或”，描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。字符“/”一般表示前后关联对象是一种“或”的关系。
到目前为止，TDMA系统对于时隙分配方法是，终端给局端发送自身的队列长度，业务需求等信息，向局端发起带宽请求；局端根据终端的带宽请求信息，将带宽分配结果映射成时隙分配信息，并将结果封装在特定的信令帧，如带宽分配映射图(MAP帧)，周期性的发给终端，终端按MAP帧指示的分配方案进行数据通信。上述这种TDMA宽带接入系统的宽带分配方法是基于请求、分配的方法，即终端向局端报告请求的带宽，局端根据系统带宽剩余情况为终端分配带宽。这种方法的不足之处在于：(1)带宽分配的过程中需要进行信令的交互。 有的带宽分配方法需要上报的内容较多，如队列长度，业务类型，终端类型等，这些额外信息及其运算增加了系统的开销以及终端实现的复杂度；(2)在TDMA系统中，局端周期性发送的带宽分配信令帧不能在本周期内生效，即带宽分配信令帧从发送到生效具有一定的时延。这是TDMA系统固有的，因此终端上报的信息不能反应实时的带宽需求，从而导致终端分到的带宽不足或者浪费，影响整体系统的性能。为此，本申请提供了一种动态宽带跟踪方法、装置、存储介质，以解决上述相关技术问题中存在的问题。在本申请中，局端在每一个调度周期结束之后只需记录每个终端的发送或接收到的有效信息数量和总信息数量，无需终端提供其他额外的信息，从而在不增加系统信令交互的前提下，可以实时动态跟踪终端的带宽，提高系统带宽利用率，下面采用示例性的实施例进行详细说明。
下面将结合附图1-附图4，对本申请实施例提供的动态宽带跟踪的方法进行详细介绍。该方法可依赖于程序实现，可运行于基于冯诺依曼体系的动态宽带跟踪装置上。该程序可集成在应用中，也可作为独立的工具类应用运行。
请参见图1，为本申请实施例提供了一种基于动态宽带跟踪方法的流程示意图。本申请实施例以性能同轴电缆接入协议(High Performance Network Over Coax，HINOC)为例来说明本发明的具体实现，如图1所示，本申请实施例的所述方法可以包括以下步骤：
S101，获取各终端时隙内的有效信息数量和总信息数量；
其中，HINOC是“三网融合”方案中光纤网络到用户家庭网络之间的传输解决方案。该技术在光纤到楼(Fiber-to-the-building，FTTB)的网络结构基础上，可以利用小区楼道和户内已经敷设、分布广泛的有线电视同轴电缆，构建高速的信息接入网。只需在楼道和户内添加相关的HINOC调制解调设备头端(HINOC Bridge,HB)与终端(HINOC Modem,HM)，无需对入户电缆线路进行任何改造，就可实现多种高速数据业务的双向传输。该技术为最后100米的宽带接入提供了一种便捷、实用的新型解决方案。HINOC技术已经发展到HINOC2.0，HINOC2.0的媒质接入控制协议为用户的带宽分配提供了更加灵活的分配方式。
通常，HINOC协议带宽分配的示意图如图2所示。HINOC协议工作在TDD/TDMA 模式下，以一个MAP周期作为基本的通信周期；每个MAP周期里，包含146个时隙，这些时隙可用于上行或者下行，其中第5个时隙到第7个时隙是固定的3个下行时隙，主要用于发送控制帧，即MAP帧。HB作为局端，负责各个HM上下行带宽资源的分配。HB向各HM广播MAP帧，发布下一个MAP周期的带宽分配方案。HM侧解析从HB发来的MAP帧获取带宽分配方案，并严格地根据带宽分配方案进行数据收发。
例如图3所示，图3是本发明实施例一HINOC上行带宽动态跟踪请求带宽的流程图，结合图3本实施例以上行方向的带宽分配为例进行说明，具体实施步骤如下：
步骤1，HM初始化上线之后，HB为HM分配预设的上行带宽；该带宽值可以是HB从远端网络管理服务器获取的信息，也可以是HM最大能获取的带宽；
步骤2，在每个调度周期(在HINOC网络中指的是MAP周期)中，HB发送MAP帧之后，HB记录每个在线HM上一个调度周期的接收到的数据帧数目F rx(即有效信息数量)，即有效信息数目，并计算每个在线HM上一个调度周期内可以传输的最大数据帧数目F max(即总信息数量)。
其中，F max的计算方式为上一个调度周期中每个在线HM分配到的上行带宽乘以调度周期的长度除以每个数据帧的bit长度。
例如，假设某个HM上一次调度周期中获得的上行带宽为60Mbps，HINOC的调度周期为2.53ms，每个数据帧的长度为1728bit，则可以计算出F max的取值为60e6*2.53e-3/1728≈87。
S102，计算生成所述各终端的带宽占空比，所述带宽占空比为所述有效信息数量和总信息数量的比值；
例如，基于S101中的例子，某HM上一次调度周期最大可传输的帧数为87个，若HB实际接收到帧数为60个，则该某终端的带宽占空比为60/87≈0.69。带宽占空比可以直观的体现出终端对分配带宽的有效使用情况。
S103，基于所述各终端的带宽占空比重新计算各终端的分配带宽。
每个在线终端的带宽占空比与两个预设值进行比较，并重新计算个终端的上行分配带宽。结合图3进行说明，具体实施步骤如下：
步骤4.1，带宽占空比与预设门限T 1进行比较，其中，预设门限T 1的取值 范围为0＜T 1≤1，若带宽占空比大于等于T 1，则跳转到步骤4.2，否则跳转到步骤4.2；
步骤4.2，更新该HM的分配带宽为第一带宽，总体原则是第一带宽BW 1不小于HM的当前分配带宽BW 0，所述第一带宽可以存在多种计算方式，本实施例中提供了两种计算方法：
计算方法1，BW 1为bW 0乘以大于1的因子，具体的计算公式可以表示为BW 1＝MIN(BW 0×β 1,BW max)，其中BW 1为所述第一宽带，BW 0表示所述当前分配带宽，BW max表示该HM可以分配的最大带宽,取值范围是0≤θ≤1,β 1为带宽调整因子,β 1>1，MIN(,)为取较小值操作；
计算方法2，BW 1为BW 0加上大于0的带宽调整常数，具体的计算公式可以表达为BW 1＝MIN(BW 0+Δ 1,BW max)，其中BW 1为第一宽带，BW 0表示所述当前分配带宽，BW max表示该HM可以分配的最大带宽，Δ1表示带宽调整常数，Δ 1>0，MIN(,)为取较小值操作；
该步骤的物理含义在于检测到带宽占空比较大，当前分配带宽存在无法满足业务传输的可能，进而需要增大HM的分配带宽，增大的幅度由β 1或Δ 1控制；
步骤4.3，带宽占空比与预设门限T 2进行比较，其中，预设门限T 1的取值范围为0＜T 2≤T 1，若带宽占空比小于等于T 2，则跳转到步骤4.4，否则跳转到步骤4.5；
步骤4.4，更新该HM的分配带宽为第二带宽，总体原则是第二带宽BW 2不大于HM的当前分配带宽BW 0，所述第二带宽可以存在多种计算方式，本实施例中提供了两种计算方法：
计算方法1，BW 2为BW 0乘以不大于1的因子，具体的计算公式可以表示为BW 2＝MIN(BW 0×θ×β 2,BW 0)，其中BW 2为第二宽带，BW 0表所述当前分配带宽，θ表示所述带宽占空比,取值范围是0≤θ≤1,β 2为带宽调整因子,β 2≥1，MIN(,)为取较小值操作；
计算方法2，BW 2为bW 0减去大于0的带宽调整常数，具体的计算公式可以表达为BW 2＝MAX(BW0-Δ 2,0)，其中BW 2为分配的第一宽带，BW 0表示当前的分配带宽，Δ 2表示带宽调整常数，Δ 2>0，MAX(,)为取较大值操作；
该步骤的物理含义在于检测到带宽占空比较小，当前分配带宽存在无法浪 费的可能，进而需要减小HM的分配带宽，减小的幅度由β 1或Δ 1控制；
步骤4.5，该HM的分配带宽保持不变，该步骤的物理含义在于检测到带宽占空比处于合适的范围，进而不需要对分配带宽进行调整；
步骤4.2、步骤4.4和步骤4.5执行完毕后重新回到步骤2，即周期性执行上述动态带宽跟踪方法。
在本申请实施例中以上行带宽跟踪为例。当只对下行带宽跟踪或上下行带宽跟踪时，本实施例同样适用。
在本申请实施例中，局端首先获取各终端时隙内的有效信息数量和总信息数量，然后计算生成所述各终端的带宽占空比，所述带宽占空比为所述有效信息数量和总信息数量的比值，最后基于所述各终端的带宽占空比重新计算各终端的分配带宽。在本申请中，局端在每一个调度周期结束之后只需记录每个终端的发送或接收到的有效信息数量和总信息数量，无需终端提供其他额外的信息，从而在不增加系统信令交互的前提下，可以实时动态跟踪终端的带宽，提高系统带宽利用率。
下述为本发明装置实施例，可以用于执行本发明方法实施例。对于本发明装置实施例中未披露的细节，请参照本发明方法实施例。
请参见图4，其示出了本发明一个示例性实施例提供的动态宽带跟踪装置的结构示意图。该动态宽带跟踪装置可以通过软件、硬件或者两者的结合实现成为终端的全部或一部分。该装置1包括信息数量获取模块10、占空比计算模块20、宽带计算模块30。
信息数量获取模块10，用于获取各终端时隙内的有效信息数量和总信息数量；
占空比计算模块20，用于计算生成所述各终端的带宽占空比，所述带宽占空比为所述有效信息数量和总信息数量的比值；
宽带计算模块30，基于所述各终端的带宽占空比重新计算各终端的分配带宽。
需要说明的是，上述实施例提供的动态宽带跟踪装置在执行动态宽带跟踪方法时，仅以上述各功能模块的划分进行举例说明，实际应用中，可以根据需 要而将上述功能分配由不同的功能模块完成，即将设备的内部结构划分成不同的功能模块，以完成以上描述的全部或者部分功能。另外，上述实施例提供的动态宽带跟踪装置与动态宽带跟踪方法实施例属于同一构思，其体现实现过程详见方法实施例，这里不再赘述。
上述本申请实施例序号仅仅为了描述，不代表实施例的优劣。
在本申请实施例中，局端首先获取各终端时隙内的有效信息数量和总信息数量，然后计算生成所述各终端的带宽占空比，所述带宽占空比为所述有效信息数量和总信息数量的比值，最后基于所述各终端的带宽占空比重新计算各终端的分配带宽。在本申请中，局端在每一个调度周期结束之后只需记录每个终端的发送或接收到的有效信息数量和总信息数量，无需终端提供其他额外的信息，从而在不增加系统信令交互的前提下，可以实时动态跟踪终端的带宽，提高系统带宽利用率。
本发明还提供一种可读介质，其上存储有程序指令，该程序指令被处理器执行时实现上述各个方法实施例提供的动态宽带跟踪方法。
本发明还提供了一种包含指令的程序产品，当其在计算机上运行时，使得计算机执行上述各个方法实施例所述的动态宽带跟踪方法。
本领域普通技术人员可以理解实现上述实施例方法中的全部或部分流程，是可以通过计算机程序来指令相关的硬件来完成，所述的程序可存储于计算机可读取存储介质中，该程序在执行时，可包括如上述各方法的实施例的流程。其中，所述的存储介质可为磁碟、光盘、只读存储记忆体或随机存储记忆体等。
以上所揭露的仅为本申请较佳实施例而已，当然不能以此来限定本申请之权利范围，因此依本申请权利要求所作的等同变化，仍属本申请所涵盖的范围。

Claims (10)

  1. 一种动态宽带跟踪方法，应用于局端，其特征在于，所述方法包括：
    获取各终端时隙内的有效信息数量和总信息数量；
    计算生成所述各终端的带宽占空比，所述带宽占空比为所述有效信息数量和总信息数量的比值；
    基于所述各终端的带宽占空比重新计算各终端的分配带宽。
  2. 根据权利要求1所述的方法，其特征在于,所述动态带宽跟踪的方法按照预设周期重复执行。
  3. 根据权利要求1所述的方法，其特征在于,所述动态带宽跟踪的方法适用于下行或上行方向的带宽跟踪：
    当用于下行带宽跟踪时，所述各终端时隙是指分配给各终端的下行时隙，所述有效信息数量是指局端在下行时隙中实际发送的字节数量或帧数量，所述总信息数量是指下行时隙可以传输的最大字节数量或帧数量；
    当用于上行带宽跟踪时，所述各终端时隙是指分配给各终端的上行时隙，所述有效信息数量是指局端在上行时隙中实际接收到的字节数量或帧数量，所述总信息数量是指上行时隙可以传输的最大字节数量或帧数量。
  4. 根据权利要求1所述的方法，其特征在于，所述基于所述各终端的带宽占空比重新计算各终端的分配带宽，包括：
    当所述带宽占空比大于或等于第一预设值时，局端给终端分配第一带宽；
    当所述带宽占空比小于或等于第二预设值时，局端给终端分配第二带宽；
    当所述带宽占空比大于第二预设值且小于第一预设值时，不调整终端宽带,即终端当前分配带宽保持不变；
    所述第一预设值大于所述第二预设值。
  5. 根据权利要求4所述的方法，其特征在于，所述第一带宽的计算公式为BW 1＝MIN(BW 0×β 1,BW max)，其中BW 1为所述第一宽带，BW 0表示所述当前分配带宽，BW max表示终端可以分配的最大带宽,取值范围是0≤θ≤1,β 1为 带宽调整因子,β 1>1，MIN(,)为取较小值操作。
  6. 根据权利要求4所述的方法，其特征在于，所述第一带宽的计算公式为BW 1＝MIN(BW 0+Δ 1,BW max)，其中BW 1为第一宽带，BW 0表示所述当前分配带宽，BW max表示终端可以分配的最大带宽，Δ1表示带宽调整常数，Δ 1>0，MIN(,)为取较小值操作。
  7. 根据权利要求4所述的方法，其特征在于，所述第二带宽的计算公式为BW 2＝MIN(BW 0×θ×β 2,BW 0)，其中BW 2为第二宽带，BW 0表所述当前分配带宽，θ表示所述带宽占空比,取值范围是0≤θ≤1,β 2为带宽调整因子,β 2≥1，MIN(,)为取较小值操作。
  8. 根据权利要求4所述的方法，其特征在于，所述第二带宽的计算公式为BW 2＝MAX(BW0-Δ 2,0)，其中BW 2为分配的第一宽带，BW 0表示当前的分配带宽，Δ 2表示带宽调整常数，Δ 2>0，MAX(,)为取较大值操作。
  9. 一种动态宽带跟踪装置，其特征在于，所述装置包括：
    信息数量获取模块，用于获取各终端时隙内的有效信息数量和总信息数量；
    占空比计算模块，用于计算生成所述各终端的带宽占空比，所述带宽占空比为所述有效信息数量和总信息数量的比值；
    宽带计算模块，基于所述各终端的带宽占空比重新计算各终端的分配带宽。
  10. 一种存储介质，其特征在于，所述存储介质存储有多条指令，所述指令适于由处理器加载并执行如权利要求1～8任意一项的方法步骤。
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