WO2017080251A1 - 一种无线通信系统中用户终端速度估计的方法和装置 - Google Patents

一种无线通信系统中用户终端速度估计的方法和装置 Download PDF

Info

Publication number
WO2017080251A1
WO2017080251A1 PCT/CN2016/091552 CN2016091552W WO2017080251A1 WO 2017080251 A1 WO2017080251 A1 WO 2017080251A1 CN 2016091552 W CN2016091552 W CN 2016091552W WO 2017080251 A1 WO2017080251 A1 WO 2017080251A1
Authority
WO
WIPO (PCT)
Prior art keywords
user terminal
speed
doppler frequency
wireless communication
communication system
Prior art date
Application number
PCT/CN2016/091552
Other languages
English (en)
French (fr)
Inventor
袁红峰
Original Assignee
中兴通讯股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Publication of WO2017080251A1 publication Critical patent/WO2017080251A1/zh

Links

Images

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S11/00—Systems for determining distance or velocity not using reflection or reradiation
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S11/00—Systems for determining distance or velocity not using reflection or reradiation
    • G01S11/02—Systems for determining distance or velocity not using reflection or reradiation using radio waves
    • G01S11/10—Systems for determining distance or velocity not using reflection or reradiation using radio waves using Doppler effect
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W64/00—Locating users or terminals or network equipment for network management purposes, e.g. mobility management
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W64/00—Locating users or terminals or network equipment for network management purposes, e.g. mobility management
    • H04W64/006—Locating users or terminals or network equipment for network management purposes, e.g. mobility management with additional information processing, e.g. for direction or speed determination

Definitions

  • the present application relates to, but is not limited to, the field of communications, and in particular, to a method and apparatus for estimating a user terminal speed in a wireless communication system.
  • the signal between the user terminal and the base station is propagated through the wireless channel, the nature of the wireless channel is relatively bad, and there are many interferences such as multipath and fading, and the fluctuation speed of the channel fading is closely related to the moving speed of the user terminal.
  • the mobile communication system is in a dynamically changing environment, and the user terminal may change from stationary to moving, or may change from a low speed motion state to a high speed motion state.
  • the channel environment, the distance between the user terminal and the base station, and the synchronization of the user terminal with the base station are all closely related to the moving speed of the user terminal.
  • the base station medium access control layer also performs selection and scheduling of the corresponding transmission mode according to the speed range of the user terminal.
  • the MAC media access control layer selects a matching downlink transmission mode according to the speed of the user terminal, for example, for a low-speed user (speed interval 0 to 60 km/h).
  • the closed-loop spatial multiplexing transmission mode is transmitted by means of transmit diversity for high-speed users (speed > 120km/h).
  • the moving speed of the user terminal can be estimated, algorithms such as switching control and power control in the radio resource management will be more effective.
  • low-speed users along some railways will also access the high-speed rail network, occupying certain frequency band resources and affecting the frequency and traffic of users on the high-speed rail.
  • the base station knows the speed range of the user terminal, the user terminal can be classified in a targeted manner, so that the high-speed user accesses the high-speed rail base station and the low-speed user accesses the ordinary base station, thereby ensuring the spectrum resources of the high-speed rail user.
  • the patent CN02156255 proposes an apparatus for estimating speed in a wireless communication system and a method thereof.
  • the solution proposed by the patent is to extract the pilot signal in the pilot channel of the wireless communication system, and perform power spectrum processing on the multipath pilot signal, and then perform the maximum multipath pilot signal according to the power spectrum processing result.
  • the Puller frequency calculation finally, estimates the speed in the wireless communication system based on the maximum Doppler frequency calculation result.
  • the working principle of the method is Doppler effect, which mainly utilizes the linear correspondence between the difference of the frequency and the radial movement speed of the user, but since the method can only be used for the user The radial movement speed of the end is improved, and the estimation accuracy depends on the measurement accuracy of the user terminal for the frequency deviation. Therefore, the estimation complexity of the method is high and the estimation result error is large.
  • Embodiments of the present invention provide a method and apparatus for estimating a user terminal speed in a wireless communication system, which solves the problem that the terminal speed estimation complexity is high and the estimation result error is large in the related wireless communication system.
  • a method for estimating a user terminal speed in a wireless communication system comprising:
  • the method further includes: setting a length of the period of time.
  • the setting of the length of the period of time includes:
  • the obtaining multiple Doppler frequency estimation values of the user terminal for the same motion period in a period of time includes:
  • the estimating the user terminal speed in the wireless communication system according to the multiple Doppler frequency estimation values includes:
  • the number of Doppler frequency estimates that satisfy each Doppler frequency threshold is counted.
  • the estimation of the user terminal speed in the wireless communication system is performed based on the number of Doppler frequency estimates that satisfy each Doppler frequency threshold.
  • the speed interval threshold includes: a low speed interval threshold, a medium speed interval threshold, and a high speed interval threshold.
  • the estimating the speed of the user terminal in the wireless communication system according to the number of Doppler frequency estimation values satisfying each Doppler frequency threshold comprises:
  • the user terminal is estimated to be a user terminal of the speed interval corresponding to the speed interval probability threshold.
  • An apparatus for estimating a speed of a user terminal in a wireless communication system comprising an acquisition module and an estimation module.
  • the acquiring module is configured to acquire a plurality of Doppler frequency estimation values of the user terminal for the same motion period in a period of time.
  • the estimating module is configured to perform an estimation of a user terminal speed in the wireless communication system based on the plurality of Doppler frequency estimates.
  • the obtaining module is further configured to: set a length of the period of time.
  • the obtaining module sets the length of the period of time including:
  • the acquiring module acquires, by the user terminal, multiple Doppler frequency estimation values of the same motion period in a period of time, including:
  • the estimating module includes an obtaining submodule, a statistics submodule, and an estimating submodule.
  • the estimating module performing the estimation of the user terminal speed in the wireless communication system according to the plurality of Doppler frequency estimation values includes:
  • the acquisition sub-module is configured to acquire each Doppler frequency threshold corresponding to each speed interval threshold.
  • the statistical sub-module is configured to count the number of Doppler frequency estimates that satisfy each Doppler frequency threshold.
  • the estimation sub-module is configured to perform an estimate of the user terminal speed in the wireless communication system based on the number of Doppler frequency estimates that satisfy each Doppler frequency threshold.
  • the estimating submodule performing the estimation of the user terminal speed in the wireless communication system according to the number of Doppler frequency estimation values satisfying each Doppler frequency threshold includes:
  • the user terminal is estimated to be a user terminal of the speed interval corresponding to the speed interval probability threshold.
  • a computer readable storage medium storing computer executable instructions for implementing a method of user terminal speed estimation in a wireless communication system when executed by a processor.
  • a method and apparatus for estimating a user terminal speed in a wireless communication system acquiring a plurality of Doppler frequency estimation values of a user terminal for the same motion period in a period of time; performing according to multiple Doppler frequency estimation values Estimation of speed in a wireless communication system.
  • the solution of the embodiment of the present invention estimates the speed of the user terminal by acquiring multiple Doppler frequency estimation values, improves the accuracy of the user terminal speed estimation, and reduces the accuracy of the user terminal without relying on the measurement accuracy of the user terminal for the frequency deviation.
  • the estimated complexity, and the stability of the estimation of the user terminal speed can provide a good resource allocation for the user terminal and ensure reasonable allocation of the spectrum resources of the user terminal.
  • Embodiment 1 is a method for estimating a speed of a user terminal in a wireless communication system according to Embodiment 1 of the present invention. flow chart;
  • FIG. 2 is a flowchart of a method for estimating a speed of a user terminal in a wireless communication system according to Embodiment 2 of the present invention
  • FIG. 3 is a schematic structural diagram of an apparatus for estimating a speed of a user terminal in a wireless communication system according to Embodiment 2 of the present invention.
  • FIG. 4 is a schematic structural diagram of an apparatus for estimating a speed of a user terminal in a wireless communication system according to Embodiment 3 of the present invention.
  • Embodiment 1 is a diagrammatic representation of Embodiment 1:
  • the method for estimating the speed of the user terminal in the wireless communication system of this embodiment is as shown in FIG. 1, and the method includes steps S101-S102:
  • Step S101 Acquire a plurality of Doppler frequency estimation values of the same motion period of the user terminal in a period of time.
  • the length of the period of time may include a period of motion of the user terminal, which may be greater than the period of motion, and optionally, the period of time is selected as the length of the period of the motion.
  • the length of the period may be set to a fixed length according to the empirical value, or may be set according to the cell coverage corresponding to the user terminal and the characteristics of the user terminal for a period of time, that is, according to the motion period of the user terminal.
  • Step S102 Perform estimation of the speed of the user terminal in the wireless communication system according to the plurality of Doppler frequency estimation values.
  • the process includes obtaining each Doppler frequency threshold corresponding to each speed interval threshold; counting the number of Doppler frequency estimates that satisfy each Doppler frequency threshold; The number of Doppler frequency estimates of the Doppler frequency threshold is used to estimate the speed of the user terminal in the wireless communication system.
  • the speed interval threshold includes: a low speed interval threshold, a medium speed interval threshold, and a high speed interval Threshold.
  • the speed interval threshold here refers to the Doppler threshold corresponding to the speed interval speed value, for example, the low interval is less than 60km/h, the medium speed interval is greater than or equal to 60km/h and less than or equal to 120km/h, and the high speed interval is greater than 120km/h, then the low-speed interval corresponding to the low-range interval is 144HZ, that is, the Doppler frequency estimation value less than 144HZ is the low-speed interval.
  • the high-speed interval threshold corresponding to the high-speed interval is 288HZ, that is, greater than 288HZ.
  • the Doppler frequency estimate is a high speed interval, of course, the middle is the medium speed region.
  • the size of the interval threshold can be determined according to the actual situation.
  • estimating the speed of the user terminal in the wireless communication system based on the number of Doppler frequency estimates that satisfy each Doppler frequency threshold comprises: determining Doppler that satisfies each Doppler frequency threshold Whether the probability of the number of frequency estimates accounts for the number of all Doppler frequency estimates satisfies the speed interval probability threshold corresponding to each speed interval; if the speed interval probability threshold is satisfied, the user terminal is estimated to be the speed interval The user terminal of the speed interval corresponding to the probability threshold.
  • other methods for estimating the speed of the user terminal by using a plurality of Doppler frequency estimation values may be used. For example, the interval of the user terminal speed satisfies a certain number of Doppler frequency estimation values as the speed interval and the like.
  • the probability threshold here needs to be determined according to the speed interval, that is, according to the speed interval threshold. For example, if it is a low speed interval, the probability threshold is 30% ⁇ P th_high ⁇ 70%, if In the high speed range, the probability threshold is 50% ⁇ P th_low ⁇ 80%.
  • Embodiment 2 is a diagrammatic representation of Embodiment 1:
  • the method for estimating the speed of the user terminal in the wireless communication system of this embodiment is as shown in FIG. 2, and the method includes steps S201-S205:
  • Step S201 Acquire a Doppler frequency estimation value of the user terminal in a period of time.
  • the selection of a period of time can be determined according to the coverage of the cell and the characteristics of the user terminal in the cell. It is generally desirable to include a motion cycle of the user terminal. Because the Doppler frequency of the base station can only reflect the radial moving speed of the user terminal, the statistical period needs to include as much as possible a motion period of the user terminal from the tangential motion to the radial motion with respect to the base station. The statistical time should not be too long. If it is too long, the speed of the user terminal during this time may change. During the time period, the number of Doppler frequency estimation values of the user terminal is at least 1000 or more, and the statistics are relatively accurate and reliable. So the statistical cycle suggests seconds.
  • Step S202 Converting the corresponding Doppler frequency interval threshold according to the user speed interval threshold value Degree interval threshold; the probability that the user terminal is greater than the high-speed user Doppler frequency threshold.
  • the correspondence between speed and Doppler frequency is as follows:
  • f d denotes the Doppler frequency
  • v is the speed of the user terminal
  • f c denotes the carrier frequency of the wireless signal
  • c denotes the speed of light.
  • f d_low 144 HZ
  • f d_high 288 HZ
  • the probability value that the statistical user terminal is greater than the high-speed user Doppler frequency threshold is the number of Doppler frequencies greater than f d_high divided by the total number of Doppler frequencies.
  • Step S203 determining whether the probability obtained in step S203 exceeds the high-speed probability threshold P th_high , and if the probability exceeds the high-speed probability threshold P th — high , determining that the user terminal is a high-speed user, the process ends, and if the probability does not exceed the high-speed probability threshold P th — high , Then, the process proceeds to step S204.
  • the probability threshold P th — high can be determined by link simulation, and the results of different channel models are slightly different.
  • the recommended range is 30% ⁇ P th_high ⁇ 70%.
  • Step S204 Calculate the probability that the user terminal is smaller than the low speed Doppler frequency threshold.
  • the probability value that the user terminal is smaller than the low-speed user Doppler frequency threshold is the number of Doppler frequency samples less than f d_low divided by the total Doppler frequency.
  • Step S205 determining whether the probability obtained in step S204 exceeds the low-speed probability threshold P th_low , and if the probability exceeds the low-speed probability threshold P th — low , determining that the user terminal is a low-speed user, and if the probability does not exceed the low-speed probability threshold P th — low , determining the The user is a medium speed user and the process ends.
  • the probability threshold P th — low can be determined by link simulation, and the results of different channel models are slightly different. It is recommended to take the value 50% ⁇ P th_low ⁇ 80%.
  • the method of the present example obtains a plurality of Doppler frequency estimation values of the user terminal in a period of time; converts the corresponding Doppler frequency threshold according to the user terminal speed threshold; and the statistical user terminal is larger (or smaller than) Doppler
  • the probability of the frequency threshold is determined as the speed interval if the probability of the Doppler frequency threshold is greater than (or less than) the probability threshold, and is not within the speed interval if the threshold is not exceeded.
  • the user's speed interval is judged by counting the probability value of the user terminal being greater than or less than the Doppler frequency threshold for a period of time, and the linear correspondence between the speed of the user terminal and the Doppler frequency is utilized, and the user terminal is fundamentally grasped.
  • the speed characteristic determines that the speed interval is accurate and stable.
  • Embodiment 3 is a diagrammatic representation of Embodiment 3
  • the device 300 for estimating the speed of the user terminal in the wireless communication system of the present embodiment includes an obtaining module 301 and an estimating module 302.
  • the obtaining module 301 is configured to acquire the same motion period of the user terminal for a period of time.
  • the estimation module 302 is configured to perform an estimate of the user terminal speed in the wireless communication system based on the plurality of Doppler frequency estimates.
  • the obtaining module is further configured to: set a length of the period of time.
  • Setting the length of the period of time by the acquiring module includes: setting a size according to an empirical value for a period of time; or setting a size of a period of time according to a cell coverage corresponding to the user terminal and a characteristic of the user terminal.
  • acquiring, by the acquiring module, the plurality of Doppler frequency estimation values of the same motion period of the user terminal in a period of time comprises: acquiring a channel pilot signal of the same motion period of the user terminal in a period of time; and according to the channel pilot signal Multiple Doppler frequency estimates are obtained.
  • the estimation module 302 includes an acquisition submodule 3021, a statistics submodule 3022, and an estimation submodule 3023.
  • the estimating module performing the estimation of the user terminal speed in the wireless communication system according to the plurality of Doppler frequency estimation values includes:
  • the acquisition sub-module 3021 is configured to obtain each Doppler frequency threshold corresponding to each speed interval threshold; the statistics sub-module 3022 is configured to count the number of Doppler frequency estimates that satisfy each Doppler frequency threshold.
  • the estimation sub-module 3023 is arranged to perform an estimation of the user terminal speed in the wireless communication system based on the number of Doppler frequency estimates that satisfy each Doppler frequency threshold.
  • the estimating sub-module 3023 performs the estimation of the user terminal speed in the wireless communication system according to the number of Doppler frequency estimation values satisfying each Doppler frequency threshold, including: determining that each Doppler frequency threshold is satisfied Whether the probability of the number of Doppler frequency estimates accounts for the number of all Doppler frequency estimates satisfies the speed interval probability threshold corresponding to each speed interval; if the probability satisfies the speed interval corresponding to each speed interval The probability threshold value is used to estimate that the user terminal is the user terminal of the speed interval corresponding to the speed interval probability threshold value.
  • a computer readable storage medium storing computer executable instructions that, when executed by a processor, implement a method for estimating a user terminal speed in the wireless communication system law.
  • the solution of the embodiment of the present invention estimates the speed of the user terminal by acquiring multiple Doppler frequency estimation values, improves the accuracy of the estimation of the speed of the user terminal, and reduces the measurement accuracy of the frequency deviation by the user terminal, thereby reducing the user terminal.
  • the estimated complexity of the speed and the improved stability of the user terminal speed can provide good resource allocation for the user terminal and ensure reasonable allocation of the spectrum resources of the user terminal.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

一种无线通信系统中用户终端速度估计的方法和装置，应用于通信领域。该方法包括：获取用户终端在一段时间内同一个运动周期的多个多普勒频率估计值（S101）；根据多个多普勒频率估计值进行无线通信系统中用户终端速度的估计（S102）。

Description

一种无线通信系统中用户终端速度估计的方法和装置 技术领域
本申请涉及但不限于通信领域，尤其涉及一种无线通信系统中用户终端速度估计的方法和装置。
背景技术
无线通信系统中用户终端与基站之间的信号通过无线信道传播的，无线信道性质较为恶劣，存在多径，衰落等诸多干扰，而信道衰落的波动速度与用户终端的移动速度有着密切的关系，而且移动通信系统处于动态变化的环境中，用户终端可能由静止变为运动，也可能从低速运动状态变为高速运动状态。
在无线通信中，信道环境，用户终端与基站之间的距离以及用户终端与基站的同步等问题，都与用户终端的移动速度密切相关。另外，基站媒体接入控制层也会根据用户终端的速度大小区间进行相应的发射模式的选择和调度。以长期演进LTE制式通信方式为例，MAC(media access control，媒体接入控制层)根据用户终端的速度大小选择匹配的下行发射模式，比如对于低速用户(速度区间0～60km/h)可以用闭环空间复用的发射模式，针对高速用户(速度>120km/h)则用发射分集的方式传输。如果可以估计用户终端的移动速度，无线资源管理中的切换控制与功率控制等算法将会更加有效。在高速铁路网络中，部分铁路沿线的低速用户也会接入到高铁网络中，占用一定的频带资源，影响高铁上用户的频率和流量。基站如果知道用户终端的速度大小区间，则可针对性的将用户终端进行归类，使高速用户接入到高铁基站而低速用户接入到普通的基站中，从而保障高铁用户的频谱资源。
文献CN02156255的专利提出了一种无线通信系统中估计速度的装置及其方法。该专利提出的方案是：提取无线通信系统的导频信道中的导频信号，并进行多径导频信号的功率谱处理，然后，根据功率谱处理结果，进行多径导频信号的最大多普勒频率计算，最后，根据最大多普勒频率计算结果进行无线通信系统中速度的估计。该方法的工作原理为多普勒效应，主要利用频率的差值与用户径向移动速度的线性对应关系，但由于该方法只能对用户终 端的径向移动速度提高估计，而且其估计精度取决于用户终端对于频率偏差的测量精度，因此该方法估计复杂度高且估计结果误差较大。
发明内容
以下是对本文详细描述的主题的概述。本概述并非是为了限制权利要求的保护范围。
本发明实施例提供了一种无线通信系统中用户终端速度估计的方法和装置，解决了相关无线通信系统中终端速度估计复杂度高且估计结果误差较大的问题。
一种无线通信系统中用户终端速度估计的方法，包括：
获取用户终端在一段时间内同一个运动周期的多个多普勒频率估计值。
根据所述多个多普勒频率估计值进行无线通信系统中用户终端速度的估计。
可选地，所述方法还包括：设置所述一段时间的长短。
所述设置所述一段时间的长短包括：
根据经验值进行设置所述一段时间的长短。
或者，
根据所述用户终端对应的小区覆盖和所述用户终端的特性设置所述一段时间的长短。
可选地，所述获取用户终端在一段时间内同一个运动周期的多个多普勒频率估计值包括：
获取所述用户终端在一段时间内同一个运动周期的信道导频信号。
根据所述信道导频信号得到所述多个多普勒频率估计值。
可选地，所述根据所述多个多普勒频率估计值进行无线通信系统中用户终端速度的估计包括：
获取每个速度区间阀值对应的每个多普勒频率阀值。
统计满足每个多普勒频率阀值的多普勒频率估计值的个数。
根据满足每个多普勒频率阀值的多普勒频率估计值的个数进行无线通信系统中用户终端速度的估计。
可选地，所述速度区间阀值包括：低速区间阀值、中速区间阀值和高速区间阀值。
可选地，所述根据满足每个多普勒频率阀值的多普勒频率估计值的个数进行无线通信系统中用户终端速度的估计包括：
判断满足每个多普勒频率阀值的多普勒频率估计值的个数占所有多普勒频率估计值个数的概率是否满足每个速度区间对应的速度区间概率门限值。
如果所述概率满足每个速度区间对应的速度区间概率门限值，则估计所述用户终端为该速度区间概率门限值对应的速度区间的用户终端。
一种无线通信系统中用户终端速度估计的装置，包括获取模块和估计模块。
所述获取模块，设置为获取用户终端在一段时间内同一个运动周期的多个多普勒频率估计值。
所述估计模块，设置为根据所述多个多普勒频率估计值进行无线通信系统中用户终端速度的估计。
可选地，所述获取模块还设置为：设置所述一段时间的长短。
所述获取模块设置所述一段时间的长短包括：
根据经验值进行设置所述一段时间的长短。
或者，
根据所述用户终端对应的小区覆盖和所述用户终端的特性设置所述一段时间的长短。
可选地，所述获取模块获取用户终端在一段时间内同一个运动周期的多个多普勒频率估计值包括：
获取所述用户终端在一段时间内同一个运动周期的信道导频信号。
根据所述信道导频信号得到所述多个多普勒频率估计值。
可选地，所述估计模块包括获取子模块、统计子模块和估计子模块。
所述估计模块根据所述多个多普勒频率估计值进行无线通信系统中用户终端速度的估计包括：
所述获取子模块，设置为获取每个速度区间阀值对应的每个多普勒频率阀值。
所述统计子模块，设置为统计满足每个多普勒频率阀值的多普勒频率估计值的个数。
所述估计子模块设置为根据满足每个多普勒频率阀值的多普勒频率估计值的个数进行无线通信系统中用户终端速度的估计。
可选地，所述估计子模块根据满足每个多普勒频率阀值的多普勒频率估计值的个数进行无线通信系统中用户终端速度的估计包括：
判断满足每个多普勒频率阀值的多普勒频率估计值的个数占所有多普勒频率估计值个数的概率是否满足每个速度区间对应的速度区间概率门限值；
如果所述概率满足每个速度区间对应的速度区间概率门限值，则估计所述用户终端为该速度区间概率门限值对应的速度区间的用户终端。
一种计算机可读存储介质，存储有计算机可执行指令，所述计算机可执行指令被处理器执行时实现所述的无线通信系统中用户终端速度估计的方法。
本发明实施例的有益效果是：
本发明实施例提供的无线通信系统中用户终端速度估计的方法和装置，获取用户终端在一段时间内同一个运动周期的多个多普勒频率估计值；根据多个多普勒频率估计值进行无线通信系统中速度的估计。本发明实施例方案通过获取多个多普勒频率估计值来进行用户终端速度的估计，提高了用户终端速度估计的准确性，并且不依靠用户终端对于频率偏差的测量精度，减低了用户终端速度的估计的复杂度，并且提高用户终端速度的估计的稳定性，能够为用户终端提供良好的资源分配，保障用户终端的频谱资源合理分配。
附图概述
图1为本发明实施例一提供的无线通信系统中用户终端速度估计的方法 流程图；
图2为本发明实施例二提供的无线通信系统中用户终端速度估计的方法流程图；
图3为本发明实施例二提供的无线通信系统中用户终端速度估计的装置结构示意图；
图4为本发明实施例三提供的无线通信系统中用户终端速度估计的装置结构示意图。
本发明的实施方式
下文中将结合附图对本发明的实施例进行详细说明需要说明的是，在不冲突的情况下，本申请中的实施例及实施例中的特征可以相互组合。
实施例一：
本实施例的无线通信系统中用户终端速度估计的方法，如图1所示，该方法包括步骤S101-S102：
步骤S101：获取用户终端在一段时间内同一个运动周期的多个多普勒频率估计值。
在该步骤中，一段时间的长短应该可以包括该用户终端的一个运动周期，可以大于该运动周期，可选地，选择该一段时间为该运动周期的长短。该一段时间的大小可以根据经验值进行设置为固定长短，也可以根据用户终端对应的小区覆盖和用户终端的特性设置一段时间的长短，即根据用户终端的运动周期进行相应设置。
步骤S102：根据多个多普勒频率估计值进行无线通信系统中用户终端速度的估计。
在该步骤中，过程包括获取每个速度区间阀值对应的每个多普勒频率阀值；统计满足每个多普勒频率阀值的多普勒频率估计值的个数；根据满足每个多普勒频率阀值的多普勒频率估计值的个数进行无线通信系统中用户终端速度的估计。
可选地，速度区间阀值包括：低速区间阀值、中速区间阀值和高速区间 阀值。当然，还可以进行其他的速度区间的划分，其对应会设置相应的速度区间阀值。这里的速度区间阀值是指速度区间速度值对应的多普勒阀值，例如设低度区间为小于60km/h，中速区间为大于等于60km/h小于等于120km/h，高速区间为大于120km/h，那么低度区间对应的低速区间阀值为144HZ，即小于144HZ的多普勒频率估计值都为低速区间，同理，高速区间对应的高速区间阀值为288HZ，即大于288HZ的多普勒频率估计值都为高速区间，当然中间为就为中速区域。当前，区间阀值的大小可以根据实际情况而定。
可选地，根据满足每个多普勒频率阀值的多普勒频率估计值的个数进行无线通信系统中用户终端速度的估计包括：判断满足每个多普勒频率阀值的多普勒频率估计值的个数占所有多普勒频率估计值个数的概率是否满足每个速度区间对应的速度区间概率门限值；如果满足速度区间概率门限值，则估计用户终端为该速度区间概率门限值对应的速度区间的用户终端。当然，其他利用多个多普勒频率估计值进行用户终端的速度估计的方法也可以，例如用户终端速度的区间满足一定个数的多普勒频率估计值就为该速度区间等。值得注意的是，这里的概率门限值需要根据速度区间而定，也即根据速度区间阀值而定，例如如果为低速区间，其概率阀值为30％≤Pth_high≤70％，如果为高速区间，其概率阀值为50％≤Pth_low≤80％。
实施例二：
本实施例的无线通信系统中用户终端速度估计的方法，如图2所示，该方法包括步骤S201-S205：
步骤S201：获取一段时间内的用户终端的多普勒频率估计值。
在该步骤中，一段时间的选择可以根据小区覆盖以及小区内用户终端的特性来决定。一般需要包含用户终端的一个运动周期。因为基站多普勒频率只能体现用户终端的径向移动速度，因此统计一段时间需尽量包含用户终端从相对基站做切向运动到径向运动的一个运动周期。统计时间也不宜过长，过长的话用户终端在此时间内的速度可能发生变化。该时间段内用户终端的多普勒频率估计值的数量至少在1000以上，统计才比较准确可靠。所以统计周期建议秒级。
步骤S202：根据用户速度区间阀值转换对应的多普勒频率区间阀值即速 度区间阀值；统计用户终端大于高速用户多普勒频率阀值的概率。
在该步骤中，由于速度和多普勒频率的对应关系如下：
Figure PCTCN2016091552-appb-000001
这里fd表示多普勒频率，v是用户终端的速度，fc表示无线信号的载频，c表示光速。假设载频为2.6Ghz，则对应的低速和高速的多普勒频率分别为fd_low＝144HZ，fd_high＝288HZ。考虑到基站端双倍的多普勒频率，因此对应低速60km/h对应的多普勒阀值为fd_low＝288HZ，高速120km/h对应的多普勒阀值为fd_high＝576HZ。统计用户终端大于高速用户多普勒频率阀值的概率值即为大于fd_high的多普勒频率个数除以总的多普勒频率的个数。
步骤S203：判断步骤S203得到的概率是否超过高速概率门限Pth_high，如果该概率超过高速概率门限Pth_high，则判定该用户终端为高速用户，流程结束，如果该概率未超过高速概率门限Pth_high，则进入步骤S204。
在该步骤中，概率门限Pth_high可链路仿真确定，不同的信道模型结果略有差异。建议取值范围为30％≤Pth_high≤70％。
步骤S204：统计用户终端小于低速多普勒频率阀值的概率。
在该步骤中，统计用户终端小于低速用户多普勒频率阀值的概率值即为小于fd_low的多普勒频率样本数除以总的多普勒频率的样本数。
步骤S205：判断步骤S204得到的概率是否超过低速概率门限Pth_low，如果该概率超过低速概率门限Pth_low，则判断该用户终端为低速用户，如果该概率未超过低速概率门限Pth_low，则判断该用户为中速用户，流程结束。
在该步骤中，概率门限Pth_low可链路仿真确定，不同的信道模型结果略有差异。建议取值50％≤Pth_low≤80％。
本实例的方法，通过获取一段时间内的用户终端的多个多普勒频率估计值；根据用户终端速度阀值转换对应的多普勒频率阀值；统计用户终端大于(或小于)多普勒频率阀值的概率，如果大于(或小于)该多普勒频率阀值的概率超过概率门限值则判为该速度区间，如果未超过门限值则不在此速度区间内。通过统计一段时间内用户终端大于或小于多普勒频率阀值的概率值来判断用户的速度区间，利用了用户终端的速度和多普勒频率的线性对应关系，从根本上抓住了用户终端的速度特性，判断速度区间准确且稳定。
实施例三：
本实施例的无线通信系统中用户终端速度估计的装置300，如图3所示，包括获取模块301和估计模块302：其中，获取模块301设置为获取用户终端在一段时间内同一个运动周期的多个多普勒频率估计值；估计模块302设置为根据多个多普勒频率估计值进行无线通信系统中用户终端速度的估计。
可选地，所述获取模块还设置为：设置所述一段时间的长短。
所述获取模块设置所述一段时间的长短包括：根据经验值进行设置一段时间的大小；或根据用户终端对应的小区覆盖和用户终端的特性设置一段时间的大小。
可选地，获取模块获取用户终端在一段时间内同一个运动周期的多个多普勒频率估计值包括：获取用户终端在一段时间内同一个运动周期的信道导频信号；根据信道导频信号得到多个多普勒频率估计值。
本实施例的无线通信系统中用户终端速度估计的装置300，如图4所示，估计模块302包括获取子模块3021、统计子模块3022和估计子模块3023。
所述估计模块根据所述多个多普勒频率估计值进行无线通信系统中用户终端速度的估计包括：
获取子模块3021设置为获取每个速度区间阀值对应的每个多普勒频率阀值；统计子模块3022设置为统计满足每个多普勒频率阀值的多普勒频率估计值的个数；估计子模块3023设置为根据满足每个多普勒频率阀值的多普勒频率估计值的个数进行无线通信系统中用户终端速度的估计。
可选地，估计子模块3023根据满足每个多普勒频率阀值的多普勒频率估计值的个数进行无线通信系统中用户终端速度的估计包括：判断满足每个多普勒频率阀值的多普勒频率估计值的个数占所有多普勒频率估计值个数的概率是否满足每个速度区间对应的速度区间概率门限值；如果所述概率满足每个速度区间对应的速度区间概率门限值，则估计用户终端为该速度区间概率门限值对应的速度区间的用户终端。
一种计算机可读存储介质，存储有计算机可执行指令，所述计算机可执行指令被处理器执行时实现所述的无线通信系统中用户终端速度估计的方 法。
本领域普通技术人员可以理解上述方法中的全部或部分步骤可通过程序来指令相关硬件完成，上述程序可以存储于计算机可读存储介质中，如只读存储器、磁盘或光盘等。可选地，上述实施例的全部或部分步骤也可以使用一个或多个集成电路来实现。上述实施例中的每个模块/单元可以采用硬件的形式实现，也可以采用软件功能模块的形式实现。本发明实施例不限制于任何特定形式的硬件和软件的结合。
以上实施例仅用以说明本发明实施例的技术方案而非限制，仅仅参照可选实施例对本发明实施例进行了详细说明。本领域的普通技术人员应当理解，可以对本发明实施例的技术方案进行修改或者等同替换，而不脱离本发明实施例技术方案的精神和范围，均应涵盖在本发明实施例的权利要求范围当中。
工业实用性
本发明实施例方案通过获取多个多普勒频率估计值来进行用户终端速度的估计，提高了用户终端速度的估计的准确性，并且不依靠用户终端对于频率偏差的测量精度，减低了用户终端速度的估计的复杂度，并且提高用户终端速度的估计的稳定性，能够为用户终端提供良好的资源分配，保障用户终端的频谱资源合理分配。

Claims (12)

  1. 一种无线通信系统中用户终端速度估计的方法，包括：
    获取用户终端在一段时间内同一个运动周期的多个多普勒频率估计值；
    根据所述多个多普勒频率估计值进行无线通信系统中用户终端速度的估计。
  2. 如权利要求1所述的无线通信系统中用户终端速度估计的方法，所述方法还包括：设置所述一段时间的长短；
    所述设置所述一段时间的长短包括：
    根据经验值进行设置所述一段时间的长短；
    或者，
    根据所述用户终端对应的小区覆盖和所述用户终端的特性设置所述一段时间的长短。
  3. 如权利要求1所述的无线通信系统中用户终端速度估计的方法，其中，所述获取用户终端在一段时间内同一个运动周期的多个多普勒频率估计值包括：
    获取所述用户终端在一段时间内同一个运动周期的信道导频信号；
    根据所述信道导频信号得到所述多个多普勒频率估计值。
  4. 如权利要求1-3任一项所述的无线通信系统中用户终端速度估计的方法，其中，所述根据所述多个多普勒频率估计值进行无线通信系统中用户终端速度的估计包括：
    获取每个速度区间阀值对应的每个多普勒频率阀值；
    统计满足每个多普勒频率阀值的多普勒频率估计值的个数；
    根据满足每个多普勒频率阀值的多普勒频率估计值的个数进行无线通信系统中用户终端速度的估计。
  5. 如权利要求4所述的无线通信系统中用户终端速度估计的方法，其中，所述速度区间阀值包括：低速区间阀值、中速区间阀值和高速区间阀值。
  6. 如权利要求4所述的无线通信系统中用户终端速度估计的方法，其中，所述根据满足每个多普勒频率阀值的多普勒频率估计值的个数进行无线通信系统中用户终端速度的估计包括：
    判断满足每个多普勒频率阀值的多普勒频率估计值的个数占所有多普勒频率估计值个数的概率是否满足每个速度区间对应的速度区间概率门限值；
    如果所述概率满足每个速度区间对应的速度区间概率门限值，则估计所述用户终端为该速度区间概率门限值对应的速度区间的用户终端。
  7. 一种无线通信系统中用户终端速度估计的装置，包括获取模块和估计模块；
    所述获取模块，设置为获取用户终端在一段时间内同一个运动周期的多个多普勒频率估计值；
    所述估计模块，设置为根据所述多个多普勒频率估计值进行无线通信系统中用户终端速度的估计。
  8. 如权利要求7所述的无线通信系统中用户终端速度估计的装置，所述获取模块还设置为：设置所述一段时间的长短；
    所述获取模块设置所述一段时间的长短包括：
    根据经验值进行设置所述一段时间的长短；
    或者，
    根据所述用户终端对应的小区覆盖和所述用户终端的特性设置所述一段时间的长短。
  9. 如权利要求7所述的无线通信系统中用户终端速度估计的装置，其中，所述获取模块获取用户终端在一段时间内同一个运动周期的多个多普勒频率估计值包括：
    获取所述用户终端在一段时间内同一个运动周期的信道导频信号；
    根据所述信道导频信号得到所述多个多普勒频率估计值。
  10. 如权利要求7-9任一项所述的无线通信系统中用户终端速度估计的装置，其中，所述估计模块包括获取子模块、统计子模块和估计子模块；
    所述估计模块根据所述多个多普勒频率估计值进行无线通信系统中用户终端速度的估计包括：
    所述获取子模块，设置为获取每个速度区间阀值对应的每个多普勒频率阀值；
    所述统计子模块，设置为统计满足每个多普勒频率阀值的多普勒频率估计值的个数；
    所述估计子模块，设置为根据满足每个多普勒频率阀值的多普勒频率估计值的个数进行无线通信系统中用户终端速度的估计。
  11. 如权利要求10所述的无线通信系统中用户终端速度估计的装置，其中，所述估计子模块根据满足每个多普勒频率阀值的多普勒频率估计值的个数进行无线通信系统中用户终端速度的估计包括：
    判断满足每个多普勒频率阀值的多普勒频率估计值的个数占所有多普勒频率估计值个数的概率是否满足每个速度区间对应的速度区间概率门限值；
    如果所述概率满足每个速度区间对应的速度区间概率门限值，则估计所述用户终端为该速度区间概率门限值对应的速度区间的用户终端。
  12. 一种计算机可读存储介质，存储有计算机可执行指令，所述计算机可执行指令被处理器执行时实现权利要求1至6任意一项所述的无线通信系统中用户终端速度估计的方法。
PCT/CN2016/091552 2015-11-13 2016-07-25 一种无线通信系统中用户终端速度估计的方法和装置 WO2017080251A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201510776590.1 2015-11-13
CN201510776590.1A CN106707268A (zh) 2015-11-13 2015-11-13 一种无线通信系统中用户终端速度估计的方法和装置

Publications (1)

Publication Number Publication Date
WO2017080251A1 true WO2017080251A1 (zh) 2017-05-18

Family

ID=58694696

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2016/091552 WO2017080251A1 (zh) 2015-11-13 2016-07-25 一种无线通信系统中用户终端速度估计的方法和装置

Country Status (2)

Country Link
CN (1) CN106707268A (zh)
WO (1) WO2017080251A1 (zh)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110248366B (zh) * 2019-04-26 2023-04-18 中通服咨询设计研究院有限公司 一种基于终端移动速度的lte网络动态频率复用方法
CN112687068B (zh) * 2021-03-19 2021-05-28 四川通信科研规划设计有限责任公司 一种基于微波和振动传感器数据的侵入检测方法

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1507292A (zh) * 2002-12-12 2004-06-23 华为技术有限公司 无线通信系统中估计速度的装置及其方法
CN1702477A (zh) * 2004-05-29 2005-11-30 三星电子株式会社 速率估计设备和方法
CN101252764A (zh) * 2008-04-03 2008-08-27 威盛电子股份有限公司 无线终端速度估计的方法及装置
WO2010016580A1 (ja) * 2008-08-07 2010-02-11 京セラ株式会社 無線通信装置および当該装置の移動速度推定方法
CN101707805A (zh) * 2009-11-19 2010-05-12 淮阴工学院 移动终端多基站频移综合定位方法
US20100216406A1 (en) * 2009-02-26 2010-08-26 Samsung Electronics Co., Ltd. Apparatus and method for velocity estimation in mobile communication system
CN101965047A (zh) * 2009-07-22 2011-02-02 联芯科技有限公司 一种移动终端速度的检测方法及装置

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1507292A (zh) * 2002-12-12 2004-06-23 华为技术有限公司 无线通信系统中估计速度的装置及其方法
CN1702477A (zh) * 2004-05-29 2005-11-30 三星电子株式会社 速率估计设备和方法
CN101252764A (zh) * 2008-04-03 2008-08-27 威盛电子股份有限公司 无线终端速度估计的方法及装置
WO2010016580A1 (ja) * 2008-08-07 2010-02-11 京セラ株式会社 無線通信装置および当該装置の移動速度推定方法
US20100216406A1 (en) * 2009-02-26 2010-08-26 Samsung Electronics Co., Ltd. Apparatus and method for velocity estimation in mobile communication system
CN101965047A (zh) * 2009-07-22 2011-02-02 联芯科技有限公司 一种移动终端速度的检测方法及装置
CN101707805A (zh) * 2009-11-19 2010-05-12 淮阴工学院 移动终端多基站频移综合定位方法

Also Published As

Publication number Publication date
CN106707268A (zh) 2017-05-24

Similar Documents

Publication Publication Date Title
JP6456926B2 (ja) ユーザ装置、基地局、上りデータ分割比率算出方法、及び上りデータ分割比率提供方法
US9565570B2 (en) Capacity planning method and device for wireless broadband network
US8675580B2 (en) Method and apparatus for facilitating packet scheduling for a hybrid communication network
JP7222076B2 (ja) 情報送信および受信方法、デバイス、および装置
US10165517B2 (en) Power allocation method and communications device
US20150156750A1 (en) Accessing method, equipment and base station
JP6049736B2 (ja) ユーザ機器とワイヤレス・デバイスのモビリティを推定する方法
CN113545119A (zh) 具有功率节省功能的波束管理电子设备和方法
CN105635980A (zh) 一种上行信号处理方法、设备和系统
CN102111180A (zh) 信号与干扰噪声功率比估算方法和装置
WO2017132806A1 (zh) 配置导频信号的方法及第一设备
WO2015176660A1 (zh) 测量参考信号传输的方法、用户设备及演进基站
KR20180008701A (ko) 자원 할당 방법, 장치, 시스템, 및 기지국
WO2020098575A1 (zh) 一种容量规划方法及装置
CN105099635A (zh) 基于ofdm的帧配置的方法和设备
WO2017080251A1 (zh) 一种无线通信系统中用户终端速度估计的方法和装置
US20170054538A1 (en) Mobile terminal devices and methods of detecting reference signals
EP2974091A1 (en) Techniques to update a wireless communication channel estimation
Nsiah et al. Latency reduction techniques for NB-IoT networks
WO2013008167A1 (en) Packet scheduling in a cellular communication network for the purpose of device -to -device communications
CN105141404A (zh) 一种LTE-A系统中基于QoE的无线资源分配方法
EP2979488B1 (en) Method for initiating handover, wireless device and base station
CN103178937B (zh) 一种物理信道资源管理方法及基站
CN104378785A (zh) 一种微小区的上下行子帧重配置方法和装置
Yang et al. Adaptive load-based and channel-aware power saving for non-real-time traffic in LTE

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 16863429

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 16863429

Country of ref document: EP

Kind code of ref document: A1