WO2020082994A1 - 信息获取方法、发送方法、终端及第一网络设备 - Google Patents

信息获取方法、发送方法、终端及第一网络设备 Download PDF

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Publication number
WO2020082994A1
WO2020082994A1 PCT/CN2019/108884 CN2019108884W WO2020082994A1 WO 2020082994 A1 WO2020082994 A1 WO 2020082994A1 CN 2019108884 W CN2019108884 W CN 2019108884W WO 2020082994 A1 WO2020082994 A1 WO 2020082994A1
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WIPO (PCT)
Prior art keywords
cell
terminal
speed information
network device
movement speed
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Ceased
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PCT/CN2019/108884
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English (en)
French (fr)
Inventor
徐珉
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China Mobile Communications Group Co Ltd
Research Institute of China Mobile Communication Co Ltd
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China Mobile Communications Group Co Ltd
Research Institute of China Mobile Communication Co Ltd
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Priority to US17/287,737 priority Critical patent/US11805462B2/en
Publication of WO2020082994A1 publication Critical patent/WO2020082994A1/zh
Anticipated expiration legal-status Critical
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W64/00Locating users or terminals or network equipment for network management purposes, e.g. mobility management
    • H04W64/006Locating 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
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W36/00Hand-off or reselection arrangements
    • H04W36/24Reselection being triggered by specific parameters
    • H04W36/32Reselection being triggered by specific parameters by location or mobility data, e.g. speed data
    • H04W36/324Reselection being triggered by specific parameters by location or mobility data, e.g. speed data by mobility data, e.g. speed data
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W4/00Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/02Services making use of location information
    • H04W4/025Services making use of location information using location based information parameters
    • H04W4/027Services making use of location information using location based information parameters using movement velocity, acceleration information
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W48/00Access restriction; Network selection; Access point selection
    • H04W48/20Selecting an access point

Definitions

  • the present disclosure relates to the field of communication technologies, and in particular, to an information acquisition method, a transmission method, a terminal, and a first network device.
  • Non-Terrestrial Network unlike the terrestrial cellular network in related technologies, its network equipment such as base stations are deployed on high-altitude flight platforms (balloons, drones, etc.) or satellites. Above 8km, it has the advantages of wide coverage, line of sight transmission, and no impact from ground disasters.
  • NTN can meet the network coverage needs of remote areas or geographically isolated areas (such as islands, civil airliners, and ocean-going ships), and improve the reliability of communication networks (especially in the event of sudden disasters) Sex.
  • the relative speed of the terminal and the serving cell is equal to the terrestrial speed of the terminal; while in NTN, the serving cell may be stationary relative to the ground (Such as hovering balloons or drones, serving cells provided by geostationary satellites) or mobile, when the serving cell moves relative to the ground, the relative speed of the terminal and the serving cell will not be equal to the terminal ’s ground speed, Mechanisms such as Mobility State Estimation (MSE) and Doppler frequency shift estimation in the corresponding related technologies cannot be fully applied.
  • MSE Mobility State Estimation
  • Doppler frequency shift estimation in the corresponding related technologies cannot be fully applied.
  • Embodiments of the present disclosure provide an information acquisition method, a transmission method, a terminal, and a first network device, to solve the problem that there is currently no relevant method for a terminal to learn cell motion information.
  • an embodiment of the present disclosure provides an information acquisition method, which is applied to a terminal and includes:
  • the cell moving speed information includes: cell moving speed information of the first network device, and / or cell moving speed information of the second network device adjacent to the first network device.
  • an embodiment of the present disclosure also provides an information sending method, which is applied to a first network device and includes:
  • the cell moving speed information includes: cell moving speed information of the first network device, and / or cell moving speed information of the second network device adjacent to the first network device.
  • an embodiment of the present disclosure also provides a terminal, including: a receiver;
  • the receiver is configured to: receive cell movement speed information sent by the first network device;
  • the cell movement speed information includes: cell movement speed information of the first network device, and / or cell movement speed information of a second network device adjacent to the first network device.
  • an embodiment of the present disclosure also provides a first network device, including: a transmitter;
  • the transmitter is used to: send cell movement speed information to the terminal;
  • the cell movement speed information includes: cell movement speed information of the first network device, and / or cell movement speed information of a second network device adjacent to the first network device.
  • an embodiment of the present disclosure also provides a terminal, including a memory, a processor, and a computer program stored on the memory and executable on the processor, wherein the computer program is processed by the When the device is executed, the steps of the above information acquisition method can be realized.
  • an embodiment of the present disclosure further provides a first network device, including a memory, a processor, and a computer program stored on the memory and executable on the processor, wherein the computer program is When the processor executes, the steps of the above information sending method can be realized.
  • an embodiment of the present disclosure also provides a computer-readable storage medium on which a computer program is stored, wherein, when the computer program is executed by a processor, the steps of the above information acquisition method or the above information transmission Method steps.
  • the terminal by receiving the cell movement speed information sent by the first network device, the terminal can learn the motion information of the relevant cell, so that when performing the communication behavior related to the motion state of the cell, especially when the cell is opposite In the scenario of ground movement, it can ensure the effective execution of the corresponding communication behavior.
  • FIG. 1 is a flowchart of an information acquisition method according to an embodiment of the present disclosure
  • FIG. 2 is a flowchart of an information sending method according to an embodiment of the present disclosure
  • FIG. 3 is a schematic structural diagram of a terminal according to an embodiment of the present disclosure.
  • FIG. 4 is a schematic structural diagram of a first network device according to an embodiment of the present disclosure.
  • FIG. 5 is a schematic structural diagram of a communication device according to an embodiment of the present disclosure.
  • the embodiments of the present disclosure can mainly target the scenario in which the cell moves relative to the ground in the NTN.
  • the terminal can learn the motion information of the relevant cell, thereby performing Relevant communication behavior can ensure the effective execution of the corresponding communication behavior.
  • the cell may be a serving cell and / or a candidate cell.
  • an embodiment of the present disclosure provides an information acquisition method, which is applied to a terminal.
  • the method includes the following steps:
  • Step 101 Receive cell movement speed information sent by the first network device.
  • the above-mentioned cell movement speed information may include: cell movement speed information of the first network device, and / or cell movement speed information of the second network device adjacent to the first network device.
  • the first network device and the second network device may be base stations, for example.
  • the number of the second network device may be one or more.
  • the cell moving speed information of the first network device may include: moving speed information of the serving cell of the first network device, and / or, moving speed information of at least one candidate cell of the first network device; further, the The moving speed information and the moving speed information of the candidate cells may be the same or different; when the moving speed information of multiple candidate cells is included, the moving speed information of every two candidate cells in the multiple candidate cells may be the same, or Not the same.
  • the cell moving speed information of the second network device may include: moving speed information of at least one candidate cell of the second network device; and when moving speed information of multiple candidate cells is included, every two candidates in the multiple candidate cells The moving speed information of the cell may be the same or different.
  • the terminal by receiving the cell movement speed information sent by the first network device, the terminal can learn the motion information of the relevant cell, so that when performing the communication behavior related to the motion state of the cell, especially when the cell is opposite In the scenario of ground movement, it can ensure the effective execution of the corresponding communication behavior.
  • step 101 may include:
  • the terminal receives the cell movement speed information broadcast by the first network device through system information
  • the terminal receives the cell movement speed information sent by the first network device through dedicated signaling.
  • the above-mentioned dedicated signaling may be determined based on actual conditions, and this embodiment of the present disclosure does not limit this. In this way, with the help of system information or dedicated signaling, it can be ensured that the terminal obtains cell movement speed information.
  • the above cell movement speed information may include at least one of the following:
  • the unit of the speed value of the cell relative to the ground can be selected in at least one of the following forms: geographic units (such as kilometers / hour, miles / hour or meters / second), and equivalent units (such as displacement equivalent ground).
  • geographic units such as kilometers / hour, miles / hour or meters / second
  • equivalent units such as displacement equivalent ground
  • the number of ordinary cells of the network per hour that is, the number of ordinary cells of the terrestrial network equivalent to the unit time displacement of the cell relative to the ground).
  • the method may further include:
  • the terminal executes the communication behavior related to the movement state of the cell according to the moving speed information of the cell.
  • the communication behavior related to the motion state of the cell includes but is not limited to mobile state estimation (cell reselection), Doppler frequency shift estimation, and the like.
  • performing the communication behavior related to the cell movement status can offset the influence of the cell movement on the related communication behavior.
  • the MSE is used by the terminal to estimate its mobile state, and uses a pre-configured scaling factor (Scaling Factor) related to the mobile state for cell reselection.
  • Scaling Factor scaling Factor
  • MSE in the related art is achieved by counting the number of times the terminal reselects a cell within a preset time (the more the number of reselections, the higher the mobile state), that is, the number of times the terminal reselects the cell N within a preset time T CRmax is within a predetermined range (0 ⁇ N CR_M , N CR_M ⁇ N CR_H , N CR_H ⁇ ⁇ ), judge that it is in the corresponding moving state (normal, medium, high).
  • the premise of the effective MSE mechanism in the related art is that the position of the cell relative to the ground is stationary, that is, the relative speed of the terminal and the cell is equal to the ground speed of the terminal, and no consideration is given to the factors of cell movement.
  • the number of reselected cells counted by the terminal may decrease
  • the estimated mobile state may be too low; when the decomposition vector of the cell's moving direction is opposite to the terminal's moving direction, or the terminal is stationary, the number of re-selected cells counted by the terminal may increase, causing the estimated mobile state to be too high.
  • the terminal will use the wrong scaling factor for cell reselection, or obtain the wrong priority when reselecting the cell with speed priority (such
  • the embodiments of the present disclosure may determine the mobile state of the terminal and perform cell reselection based on the received cell movement speed information.
  • the above process of performing the communication behavior related to the motion state of the cell according to the information about the moving speed of the cell may include:
  • the cell reselection is performed according to a scaling factor related to the mobile state of the terminal.
  • the above-mentioned equivalent number of ordinary cells of the terrestrial network may be positive or negative (depending on the corresponding mobile displacement), or may be an integer or a non-integer.
  • the equivalent number of ordinary cells in the terrestrial network is 2.5; or, if the mobile displacement is 6km and the preset cell diagonal length is 2km, then The equivalent number of ordinary cells of the terrestrial network is 3; or, if the mobile displacement is -5.6km and the preset diagonal length of the cell is 2km, the equivalent number of ordinary cells of the terrestrial network is -2.8.
  • cell reselection based on the received cell movement speed information can counteract the adverse impact of cell movement on the reselection process, reduce unnecessary reselection such as short passage of neighboring cells on the terminal path or location, and ensure cell reselection Effectively.
  • the Doppler shift estimation in the related art can be calculated by the following formula:
  • is the angle between the moving direction of the terminal and the direction of the incident wave
  • v is the ground speed of the terminal
  • c is the electromagnetic wave propagation speed 3 ⁇ 105Km / s
  • f is the carrier frequency
  • the Doppler frequency shift estimation in the related art only considers the ground speed of the terminal, and its effective premise is that the position of the cell relative to the ground is stationary, that is, the relative speed of the terminal and the cell is equal to the ground speed of the terminal, and the cell movement is not considered. the elements of.
  • the Doppler frequency shift estimated by the terminal may be too large ;
  • the decomposition vector of the cell movement direction is opposite to the terminal movement direction, or the terminal is stationary, because the relative speed of the two is higher than the terminal's ground speed, the Doppler frequency shift estimated by the terminal may be too small.
  • the estimated Doppler frequency shift is too large or too small, it will cause a large error in the Doppler frequency shift estimation of the terminal, thereby affecting the reception quality.
  • embodiments of the present disclosure may perform Doppler frequency shift estimation based on the received cell movement speed information.
  • the above process of performing the communication behavior related to the motion state of the cell according to the information about the moving speed of the cell may include:
  • Doppler frequency shift estimation is performed.
  • V UE the ground speed of the terminal
  • V NTNCELL the decomposition vector speed of the cell accessed by the terminal in the direction of motion of the terminal
  • V NTNCELL may be positive or negative
  • V NTNCELL the adjusted ground speed V of the terminal
  • V V UE + V NTNCELL
  • V can be equivalent to the speed of the terminal relative to electromagnetic waves.
  • Doppler frequency shift estimation based on the received cell movement speed information can offset the adverse effect of cell movement on the Doppler frequency shift estimation process, thereby reducing errors and allowing the terminal to select a suitable carrier for data reception.
  • an embodiment of the present disclosure provides an information sending method, which is applied to a first network device, and the method includes the following steps:
  • Step 201 Send cell movement speed information to the terminal.
  • the cell moving speed information includes: cell moving speed information of the first network device, and / or cell moving speed information of the second network device adjacent to the first network device.
  • the terminal by sending cell movement speed information to the terminal, the terminal can learn the motion information of the relevant cell, so that when performing the communication behavior related to the cell motion state, especially when the cell moves relative to the ground In this scenario, the effective execution of the corresponding communication behavior can be guaranteed.
  • step 201 may include:
  • an embodiment of the present disclosure also provides a terminal, including a processor 31, a transmitter 32, and a receiver 33.
  • the receiver 33 is configured to: receive cell movement speed information sent by the first network device;
  • the cell movement speed information includes: cell movement speed information of the first network device, and / or cell movement speed information of a second network device adjacent to the first network device.
  • the terminal of the embodiment of the present disclosure can learn the motion state of the relevant cell by receiving the cell movement speed information sent by the first network device, so that when performing the communication behavior related to the cell motion state, especially when the cell moves relative to the ground In this scenario, the effective execution of the corresponding communication behavior can be guaranteed.
  • the receiver 33 is specifically used to:
  • the cell movement speed information includes at least one of the following:
  • the processor 31 is configured to: perform communication behavior related to the movement state of the cell according to the moving speed information of the cell.
  • the processor 31 is further configured to: based on the cell movement speed information, estimate a ground equivalent to the movement displacement of each cell reselected by the terminal in the movement direction of the terminal within a preset time The number of ordinary cells in the network; adjust the number of times the terminal reselects the cell within the preset time according to the estimated number of ordinary cells in the terrestrial network; use the adjusted number of reselected cells to determine the movement of the terminal State; cell reselection is performed according to a scaling factor related to the mobile state of the terminal.
  • the processor 31 is further configured to: according to the cell movement speed information, estimate the decomposition vector velocity value of the cell accessed by the terminal in the movement direction of the terminal; according to the estimated decomposition vector velocity Value, adjust the ground speed of the terminal; use the adjusted ground speed of the terminal to perform Doppler frequency shift estimation.
  • bus 30 may include any number of interconnected buses and bridges, and bus 30 will include one or more processors represented by processor 31 and memory represented by memory 34 The various circuits are connected together.
  • the transmitter 32 and the receiver 33 may be a transceiver interface, and the transmitter 32 and the receiver 33 may be connected to the processor 31 and the memory 34 through the bus 30.
  • the processor 31 is responsible for managing the bus 30 and general processing, and the memory 34 may be used to store data used by the processor 31 in performing operations.
  • an embodiment of the present disclosure also provides a first network device, including a processor 41, a transmitter 42, and a receiver 43.
  • the transmitter 42 is configured to: send cell movement speed information to the terminal;
  • the cell movement speed information includes: cell movement speed information of the first network device, and / or cell movement speed information of a second network device adjacent to the first network device.
  • the terminal by receiving the cell movement speed information sent by the first network device, the terminal can learn the motion information of the relevant cell, so that when performing the communication behavior related to the motion state of the cell, especially in the cell Relative to the ground movement scenario, it can ensure the effective execution of the corresponding communication behavior.
  • the transmitter 42 is specifically configured to:
  • bus 40 may include any number of interconnected buses and bridges, and bus 40 will include one or more processors represented by processor 41 and memory represented by memory 44 The various circuits are connected together.
  • the transmitter 42 and the receiver 43 may be a transceiver interface, and the transmitter 42 and the receiver 43 may be connected to the processor 41 and the memory 44 through the bus 40.
  • the processor 41 is responsible for managing the bus 40 and general processing, and the memory 44 may be used to store data used by the processor 41 in performing operations.
  • an embodiment of the present disclosure also provides a terminal, including a memory, a processor, and a computer program stored on the memory and executable on the processor, wherein the computer program is executed by the processor.
  • An embodiment of the present disclosure also provides a first network device, including a memory, a processor, and a computer program stored on the memory and executable on the processor, wherein the computer program is used by the processor During execution, the processes of the above embodiments of the information sending method can be implemented, and the same technical effect can be achieved. To avoid repetition, details are not described here.
  • an embodiment of the present disclosure also provides a communication device, including a bus 51, a transceiver 52, an antenna 53, a bus interface 54, a processor 55, and a memory 56.
  • the communication device further includes: a computer program stored on the memory 56 and executable on the processor 55.
  • the communication device is a terminal
  • the computer program when executed by the processor 55, the following steps may be implemented:
  • the cell movement speed information includes: cell movement speed information of the first network device, and / or a second neighboring to the first network device Information on cell movement speed of network equipment.
  • the communication device is the first network device
  • the computer program when executed by the processor 55, the following steps may be implemented:
  • the cell movement speed information includes: cell movement speed information of the first network device, and / or, a cell of a second network device adjacent to the first network device Movement speed information.
  • bus 51 may include any number of interconnected buses and bridges, bus 51 will include one or more processors represented by processor 55 and memory represented by memory 56 The various circuits are linked together.
  • the bus 51 can also link various other circuits such as peripheral devices, voltage regulators, and power management circuits, etc., which are well known in the art, and therefore, they will not be described further herein.
  • the bus interface 54 provides an interface between the bus 51 and the transceiver 52.
  • the transceiver 52 may be one element or multiple elements, such as multiple receivers and transmitters, providing a unit for communicating with various other devices on a transmission medium.
  • the data processed by the processor 55 is transmitted on the wireless medium through the antenna 53. Further, the antenna 53 also receives the data and transmits the data to the processor 55.
  • the processor 55 is responsible for managing the bus 51 and general processing, and can also provide various functions, including timing, peripheral interfaces, voltage regulation, power management, and other control functions.
  • the memory 56 may be used to store data used by the processor 55 when performing operations.
  • the processor 55 may be a central processing unit CPU, an application specific integrated circuit ASIC, a field programmable gate array FPGA or a complex programmable logic device CPLD.
  • An embodiment of the present disclosure also provides a computer-readable storage medium on which a computer program is stored, and when the computer program is executed by a processor, the processes of the foregoing information acquisition method embodiments or the foregoing information transmission method embodiments In order to avoid repetition, we will not repeat them here.
  • Computer-readable media include permanent and non-permanent, removable and non-removable media, and information storage can be accomplished by any method or technology.
  • the information may be computer readable instructions, data structures, modules of programs, or other data.
  • Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technologies, read-only compact disc read-only memory (CD-ROM), digital versatile disc (DVD) or other optical storage, Magnetic tape cassettes, magnetic tape magnetic disk storage or other magnetic storage devices or any other non-transmission media can be used to store information that can be accessed by computing devices. According to the definition in this article, computer-readable media does not include temporary computer-readable media (transitory media), such as modulated data signals and carrier waves.
  • the embodiments described in the embodiments of the present disclosure may be implemented by hardware, software, firmware, middleware, microcode, or a combination thereof.
  • the processing unit can be implemented in one or more application specific integrated circuits (Application Specific Integrated Circuits, ASIC), digital signal processor (Digital Signal Processing, DSP), digital signal processing device (DSP Device, DSPD), programmable Logic Device (Programmable Logic Device, PLD), Field Programmable Gate Array (Field-Programmable Gate Array, FPGA), general-purpose processor, controller, microcontroller, microprocessor, others for performing the functions described in this disclosure Electronic unit or its combination.
  • ASIC Application Specific Integrated Circuits
  • DSP Digital Signal Processing
  • DSP Device digital signal processing device
  • DPD digital signal processing device
  • PLD programmable Logic Device
  • Field Programmable Gate Array Field-Programmable Gate Array
  • FPGA Field-Programmable Gate Array
  • the technology described in the embodiments of the present disclosure may be implemented through modules (eg, procedures, functions, etc.) that perform the functions described in the embodiments of the present disclosure.
  • the software codes can be stored in the memory and executed by the processor.
  • the memory may be implemented in the processor or external to the processor.

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Abstract

本公开提供一种信息获取方法、发送方法、终端及第一网络设备,其中,所述信息获取方法包括:接收第一网络设备发送的小区移动速度信息;所述小区移动速度信息包括:所述第一网络设备的小区移动速度信息,和/或,与所述第一网络设备相邻的第二网络设备的小区移动速度信息。

Description

信息获取方法、发送方法、终端及第一网络设备
相关申请的交叉引用
本申请主张在2018年10月22日在中国提交的中国专利申请No.201811228239.9的优先权,其全部内容通过引用包含于此。
技术领域
本公开涉及通信技术领域,尤其涉及一种信息获取方法、发送方法、终端及第一网络设备。
背景技术
在非地面网络(Non-Terrestrial Network,NTN)中,有别于相关技术中的地面蜂窝网络,其网络设备比如基站部署于高空飞行平台(气球、无人机等)或卫星,地面高度通常在8km以上,具有覆盖范围广、视线传播、不受地面灾害影响等优势。作为相关技术中的地面蜂窝网络的有效补充,NTN可以满足偏远地区或地理隔离区域(如海岛、民航客机、远洋船舶)的网络覆盖需求,提升通信网络(特别是突发灾害情况下)的可靠性。
在相关技术中的地面网络中,由于基站位置和服务小区较为固定(相对地面静止),终端和服务小区的相对速度等同于终端的地面速度;而在NTN中,服务小区相对于地面可以是静止的(比如悬停的气球或无人机、同步轨道卫星所提供的服务小区)或者移动的,当服务小区相对于地面移动时,终端和服务小区的相对速度将不能等同于终端的地面速度,相应的相关技术中的移动状态估计(Mobility State Estimation,MSE)、多普勒频移估计等机制无法完全适用。
然而,针对小区相对于地面移动的场景,目前却没有相关方法使得终端获知小区运动信息,影响与小区运动状态相关的通信行为。
发明内容
本公开实施例提供一种信息获取方法、发送方法、终端及第一网络设备, 以解决目前没有相关方法使得终端获知小区运动信息的问题。
第一方面,本公开实施例提供了一种信息获取方法,应用于终端,包括:
接收第一网络设备发送的小区移动速度信息;
其中,所述小区移动速度信息包括:所述第一网络设备的小区移动速度信息,和/或,与所述第一网络设备相邻的第二网络设备的小区移动速度信息。
第二方面,本公开实施例还提供了一种信息发送方法,应用于第一网络设备,包括:
向终端发送小区移动速度信息;
其中,所述小区移动速度信息包括:所述第一网络设备的小区移动速度信息,和/或,与所述第一网络设备相邻的第二网络设备的小区移动速度信息。
第三方面,本公开实施例还提供了一种终端,包括:接收器;
其中,所述接收器用于:接收第一网络设备发送的小区移动速度信息;
所述小区移动速度信息包括:所述第一网络设备的小区移动速度信息,和/或,与所述第一网络设备相邻的第二网络设备的小区移动速度信息。
第四方面,本公开实施例还提供了一种第一网络设备,包括:发送器;
其中,所述发送器用于:向终端发送小区移动速度信息;
所述小区移动速度信息包括:所述第一网络设备的小区移动速度信息,和/或,与所述第一网络设备相邻的第二网络设备的小区移动速度信息。
第五方面,本公开实施例还提供了一种终端,包括存储器、处理器及存储在所述存储器上并可在所述处理器上运行的计算机程序,其中,所述计算机程序被所述处理器执行时可实现上述信息获取方法的步骤。
第六方面,本公开实施例还提供了一种第一网络设备,包括存储器、处理器及存储在所述存储器上并可在所述处理器上运行的计算机程序,其中,所述计算机程序被所述处理器执行时可实现上述信息发送方法的步骤。
第七方面,本公开实施例还提供了一种计算机可读存储介质,其上存储有计算机程序,其中,所述计算机程序被处理器执行时可实现上述信息获取方法的步骤,或者上述信息发送方法的步骤。
本公开实施例的信息获取方法,通过接收第一网络设备发送的小区移动速度信息,可以使得终端获知相关小区的运动信息,从而在执行与小区运动 状态相关的通信行为时,尤其是在小区相对于地面移动的场景下,可以保证相应通信行为的有效执行。
附图说明
为了更清楚地说明本公开实施例的技术方案,下面将对本公开实施例中所需要使用的附图作简单地介绍,显而易见地,下面描述中的附图仅仅是本公开的一些实施例,对于本领域普通技术人员来讲,在不付出创造性劳动的前提下,还可以根据这些附图获得其他的附图。
图1为本公开实施例的信息获取方法的流程图;
图2为本公开实施例的信息发送方法的流程图;
图3为本公开实施例的终端的结构示意图;
图4为本公开实施例的第一网络设备的结构示意图;
图5为本公开实施例的通信设备的结构示意图。
具体实施方式
下面将结合本公开实施例中的附图,对本公开实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例是本公开一部分实施例,而不是全部的实施例。基于本公开中的实施例,本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例,都属于本公开保护的范围。
首先说明的是,本公开实施例主要可针对NTN中小区相对于地面移动的场景,通过接收网络侧发送的小区移动速度信息,可以使得终端获知相关小区的运动信息,从而在执行与小区运动状态相关的通信行为时,可以保证相应通信行为的有效执行。该小区可为服务小区和/或候选小区。
参见图1所示,本公开实施例提供了一种信息获取方法,应用于终端,所述方法包括如下步骤:
步骤101:接收第一网络设备发送的小区移动速度信息。
其中,上述小区移动速度信息可以包括:第一网络设备的小区移动速度信息,和/或,与第一网络设备相邻的第二网络设备的小区移动速度信息。
可以理解的,该第一网络设备和第二网络设备比如可为基站。而该第二 网络设备的个数可以为一个或多个。该第一网络设备的小区移动速度信息可以包括:第一网络设备的服务小区的移动速度信息,和/或,第一网络设备的至少一个候选小区的移动速度信息;进一步地,上述服务小区的移动速度信息和候选小区的移动速度信息可以相同,也可以不相同;当包括多个候选小区的移动速度信息时,多个候选小区中的每两个候选小区的移动速度信息可以相同,也可以不相同。该第二网络设备的小区移动速度信息可以包括:第二网络设备的至少一个候选小区的移动速度信息;而当包括多个候选小区的移动速度信息时,多个候选小区中的每两个候选小区的移动速度信息可以相同,也可以不相同。
本公开实施例的信息获取方法,通过接收第一网络设备发送的小区移动速度信息,可以使得终端获知相关小区的运动信息,从而在执行与小区运动状态相关的通信行为时,尤其是在小区相对于地面移动的场景下,可以保证相应通信行为的有效执行。
本公开实施例中,可选地,上述步骤101可包括:
终端接收第一网络设备通过系统信息广播的所述小区移动速度信息;
或者,
终端接收第一网络设备通过专用信令发送的所述小区移动速度信息。
其中,上述专用信令可基于实际情况而定,本公开实施例不对此进行限制。这样,借助系统信息或专用信令,可保证终端获取到小区移动速度信息。
可选地,上述小区移动速度信息可以包括如下至少一项:
小区相对于地面的速度值,和小区相对于地面的速度方向。
其中,该小区相对于地面的速度值的单位可选为如下至少一种形式:地理单位(比如千米/小时、英里/小时或米/秒),和等效单位(比如位移所等效地面网络普通小区数/小时,即小区相对于地面单位时间位移所等效的地面网络普通小区数)。
本公开实施例中,可选地,步骤101之后,所述方法还可包括:
终端根据小区移动速度信息,执行与小区运动状态相关的通信行为。
其中,该与小区运动状态相关的通信行为包括但不限于移动状态估计(小区重选)、多普勒频移估计等。这样,根据小区移动速度信息,执行与小区运 动状态相关的通信行为,可以抵消小区移动对相关通信行为造成的影响。
众所周知,相关技术中的移动蜂窝网络中,MSE用于终端估算其移动状态,并使用预配置的与移动状态相关的缩放因子(Scaling Factor)进行小区重选。相关技术中的MSE通过统计预设时间内终端重选小区的次数实现(重选次数越多,移动状态越高),即通过预设时间T CRmax内终端重选小区的次数N处于某预定范围(0~N CR_M、N CR_M~N CR_H、N CR_H~∞),判断其处于相应的移动状态(普通、中、高)。相关技术中的MSE机制有效的前提是小区相对于地面的位置静止,即终端和小区的相对速度等同于终端的地面速度,并没有考虑小区移动的因素。然而,在小区相对地面移动的场景下,由于未考虑小区即邻区的移动速度的影响,当小区移动方向的分解矢量与终端运动方向相同时,终端统计的重选小区的次数可能会减少,造成估计的移动状态可能过低;而当小区移动方向的分解矢量与终端运动方向相反,或终端静止时,终端统计的重选小区的次数可能会增多,造成估计的移动状态可能过高。而估计的移动状态过低或过高,将导致终端使用错误的缩放因子进行小区重选,或在具有速度优先级的小区重选(如高铁专网)时获得错误的优先级。
为了抵消小区移动对重选过程造成的不利影响,本公开实施例可以基于接收到的小区移动速度信息,确定终端的移动状态并进行小区重选。
具体地,上述根据小区移动速度信息,执行与小区运动状态相关的通信行为的过程可以包括:
根据小区移动速度信息,估算预设时间内终端重选的各个小区在所述终端的运动方向上的移动位移所等效的地面网络普通小区数;
根据估算得到的地面网络普通小区数,对所述终端在所述预设时间内重选小区的次数进行调整;
利用调整后的重选小区的次数,确定所述终端的移动状态;表示
根据与所述终端的移动状态相关的缩放因子,进行小区重选。
例如,若预设时间为T CRmax,T CRmax内终端重选小区的次数为n,则调整后的重选小区的次数N为:N=n+∑k i;其中,i=1、2……n,k i表示第i个重选的小区在终端的运动方向上的移动位移所等效的地面网络普通小区数。
其中,在估算移动位移所等效的地面网络普通小区数时,可利用移动位 移除以预设的小区对角长度确定。而为了准确确定终端的移动状态,上述等效的地面网络普通小区数可以为正数或负数(依对应的移动位移而定),也可以为整数或非整数。比如,若移动位移为5km,预设的小区对角长度为2km,则等效的地面网络普通小区数为2.5个;或者,若移动位移为6km,预设的小区对角长度为2km,则等效的地面网络普通小区数为3个;或者,若移动位移为-5.6km,预设的小区对角长度为2km,则等效的地面网络普通小区数为-2.8个。
这样,根据接收到的小区移动速度信息进行小区重选,可以抵消小区移动对重选过程造成的不利影响,减少不必要的重选比如邻小区在终端路径或位置上短暂经过,保证小区重选有效进行。
通常,相关技术中的多普勒频移估计可通过以下公式计算:
Figure PCTCN2019108884-appb-000001
其中,θ为终端移动方向和入射波方向的夹角,v是终端的地面速度;c为电磁波传播速度3×105Km/s,f为载波频率。
即相关技术中的多普勒频移估计仅考虑终端的地面速度,其有效的前提是小区相对于地面的位置静止,即终端和小区的相对速度等同于终端的地面速度,并没有考虑小区移动的因素。然而,在小区相对地面移动的场景下,当小区移动方向的分解矢量与终端运动方向相同时,由于两者的相对速度低于终端的地面速度,终端所估计的多普勒频移可能过大;而当小区移动方向的分解矢量与终端运动方向相反,或终端静止时,由于两者的相对速度高于终端的地面速度,终端所估计的多普勒频移可能过小。而估计的多普勒频移过大或过小,将导致终端的多普勒频移估计出现较大误差,从而影响接收质量。
为了抵消小区移动对多普勒频移估计过程造成的不利影响,本公开实施例可以基于接收到的小区移动速度信息,进行多普勒频移估计。
具体地,上述根据小区移动速度信息,执行与小区运动状态相关的通信行为的过程可以包括:
根据小区移动速度信息,估算终端接入的小区在所述终端的运动方向上的分解矢量速度值;
根据估算得到的分解矢量速度值,对所述终端的地面速度进行调整;
利用调整后的所述终端的地面速度,进行多普勒频移估计。
例如,若终端的地面速度为V UE,终端接入的小区在终端的运动方向上的分解矢量速度为V NTNCELL,V NTNCELL可为正或负,则调整后的终端的地面速度V为:V=V UE+V NTNCELL。而V可等效于终端相对电磁波的速度。
这样,根据接收到的小区移动速度信息进行多普勒频移估计,可以抵消小区移动对多普勒频移估计过程造成的不利影响,从而减少误差,使得终端选择合适的载波进行数据接收。
参见图2所示,本公开实施例提供了一种信息发送方法,应用于第一网络设备,所述方法包括如下步骤:
步骤201:向终端发送小区移动速度信息。
其中,所述小区移动速度信息包括:所述第一网络设备的小区移动速度信息,和/或,与所述第一网络设备相邻的第二网络设备的小区移动速度信息。
本公开实施例的信息发送方法,通过向终端发送小区移动速度信息,可以使得终端获知相关小区的运动信息,从而在执行与小区运动状态相关的通信行为时,尤其是在小区相对于地面移动的场景下,可以保证相应通信行为的有效执行。
本公开实施例中,可选地,上述步骤201可包括:
通过系统信息,向所述终端广播所述小区移动速度信息;
或者,
通过专用信令,向所述终端发送所述小区移动速度信息。
上述实施例对本公开的信息获取方法及发送方法进行了说明,下面将结合实施例和附图对本公开的终端和第一网络设备进行说明。
参见图3所示,本公开实施例还提供了一种终端,包括处理器31、发送器32和接收器33。
其中,所述接收器33用于:接收第一网络设备发送的小区移动速度信息;
所述小区移动速度信息包括:所述第一网络设备的小区移动速度信息,和/或,与所述第一网络设备相邻的第二网络设备的小区移动速度信息。
本公开实施例的终端,通过接收第一网络设备发送的小区移动速度信息, 可以获知相关小区的运动状态,从而在执行与小区运动状态相关的通信行为时,尤其是在小区相对于地面移动的场景下,可以保证相应通信行为的有效执行。
本公开实施例中,可选地,所述接收器33具体用于:
接收所述第一网络设备通过系统信息广播的所述小区移动速度信息;
或者,接收所述第一网络设备通过专用信令发送的所述小区移动速度信息。
可选地,所述小区移动速度信息包括如下至少一项:
小区相对于地面的速度值,和小区相对于地面的速度方向。
可选地,所述处理器31用于:根据所述小区移动速度信息,执行与小区运动状态相关的通信行为。
可选地,所述处理器31还用于:根据所述小区移动速度信息,估算预设时间内所述终端重选的各个小区在所述终端的运动方向上的移动位移所等效的地面网络普通小区数;根据估算得到的地面网络普通小区数,对所述终端在所述预设时间内重选小区的次数进行调整;利用调整后的重选小区的次数,确定所述终端的移动状态;根据与所述终端的移动状态相关的缩放因子,进行小区重选。
可选地,所述处理器31还用于:根据所述小区移动速度信息,估算所述终端接入的小区在所述终端的运动方向上的分解矢量速度值;根据估算得到的分解矢量速度值,对所述终端的地面速度进行调整;利用调整后的所述终端的地面速度,进行多普勒频移估计。
在图3中,总线架构(用总线30来代表),总线30可以包括任意数量的互联的总线和桥,总线30将包括由处理器31代表的一个或多个处理器和存储器34代表的存储器的各种电路连接在一起。发送器32和接收器33可以是一个收发接口,发送器32和接收器33可通过总线30与处理器31和存储器34连接。
处理器31负责管理总线30和通常的处理,而存储器34可以被用于存储处理器31在执行操作时所使用的数据。
参见图4所示,本公开实施例还提供了一种第一网络设备,包括处理器41、发送器42和接收器43。
其中,所述发送器42用于:向终端发送小区移动速度信息;
所述小区移动速度信息包括:所述第一网络设备的小区移动速度信息,和/或,与所述第一网络设备相邻的第二网络设备的小区移动速度信息。
本公开实施例的第一网络设备,通过接收第一网络设备发送的小区移动速度信息,可以使得终端获知相关小区的运动信息,从而在执行与小区运动状态相关的通信行为时,尤其是在小区相对于地面移动的场景下,可以保证相应通信行为的有效执行。
可选地,所述发送器42具体用于:
通过系统信息,向所述终端广播所述小区移动速度信息;
或者,
通过专用信令,向所述终端发送所述小区移动速度信息。
在图4中,总线架构(用总线40来代表),总线40可以包括任意数量的互联的总线和桥,总线40将包括由处理器41代表的一个或多个处理器和存储器44代表的存储器的各种电路连接在一起。发送器42和接收器43可以是一个收发接口,发送器42和接收器43可通过总线40与处理器41和存储器44连接。
处理器41负责管理总线40和通常的处理,而存储器44可以被用于存储处理器41在执行操作时所使用的数据。
此外,本公开实施例还提供了一种终端,包括存储器、处理器及存储在所述存储器上并可在所述处理器上运行的计算机程序,其中,所述计算机程序被所述处理器执行时可实现上述信息获取方法实施例的各个过程,且能达到相同的技术效果,为避免重复,这里不再赘述。
本公开实施例还提供了一种第一网络设备,包括存储器、处理器及存储在所述存储器上并可在所述处理器上运行的计算机程序,其中,所述计算机程序被所述处理器执行时可实现上述信息发送方法实施例的各个过程,且能达到相同的技术效果,为避免重复,这里不再赘述。
具体地,参见图5所示,本公开实施例还提供了一种通信设备,包括总线51、收发机52、天线53、总线接口54、处理器55和存储器56。
在本公开实施例中,所述通信设备还包括:存储在存储器56上并可在处理器55上运行的计算机程序。
可选地,当所述通信设备为终端时,所述计算机程序被处理器55执行时可实现如下步骤:
接收第一网络设备发送的小区移动速度信息;其中,所述小区移动速度信息包括:所述第一网络设备的小区移动速度信息,和/或,与所述第一网络设备相邻的第二网络设备的小区移动速度信息。
可选地,当所述通信设备为第一网络设备时,所述计算机程序被处理器55执行时可实现如下步骤:
向终端发送小区移动速度信息;其中,所述小区移动速度信息包括:所述第一网络设备的小区移动速度信息,和/或,与所述第一网络设备相邻的第二网络设备的小区移动速度信息。
在图5中,总线架构(用总线51来代表),总线51可以包括任意数量的互联的总线和桥,总线51将包括由处理器55代表的一个或多个处理器和存储器56代表的存储器的各种电路链接在一起。总线51还可以将诸如外围设备、稳压器和功率管理电路等之类的各种其他电路链接在一起,这些都是本领域所公知的,因此,本文不再对其进行进一步描述。总线接口54在总线51和收发机52之间提供接口。收发机52可以是一个元件,也可以是多个元件,比如多个接收器和发送器,提供用于在传输介质上与各种其他装置通信的单元。经处理器55处理的数据通过天线53在无线介质上进行传输,进一步,天线53还接收数据并将数据传送给处理器55。
处理器55负责管理总线51和通常的处理,还可以提供各种功能,包括定时,外围接口,电压调节、电源管理以及其他控制功能。而存储器56可以被用于存储处理器55在执行操作时所使用的数据。
可选地,处理器55可以是中央处理单元CPU、专用集成电路ASIC、现场可编程门阵列FPGA或复杂可编程逻辑设备CPLD。
本公开实施例还提供了一种计算机可读存储介质,其上存储有计算机程序,所述计算机程序被处理器执行时可实现上述信息获取方法实施例的各个过程,或者上述信息发送方法实施例的各个过程,且能达到相同的技术效果,为避免重复,这里不再赘述。
计算机可读介质包括永久性和非永久性、可移动和非可移动媒体,可以由 任何方法或技术来实现信息存储。信息可以是计算机可读指令、数据结构、程序的模块或其他数据。计算机的存储介质的例子包括,但不限于相变内存(PRAM)、静态随机存取存储器(SRAM)、动态随机存取存储器(DRAM)、其他类型的随机存取存储器(RAM)、只读存储器(ROM)、电可擦除可编程只读存储器(EEPROM)、快闪记忆体或其他内存技术、只读光盘只读存储器(CD-ROM)、数字多功能光盘(DVD)或其他光学存储、磁盒式磁带,磁带磁磁盘存储或其他磁性存储设备或任何其他非传输介质,可用于存储可以被计算设备访问的信息。按照本文中的界定,计算机可读介质不包括暂存电脑可读媒体(transitory media),如调制的数据信号和载波。
需要说明的是,在本文中,术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含,从而使得包括一系列要素的过程、方法、物品或者装置不仅包括那些要素,而且还包括没有明确列出的其他要素,或者是还包括为这种过程、方法、物品或者装置所固有的要素。在没有更多限制的情况下,由语句“包括一个……”限定的要素,并不排除在包括该要素的过程、方法、物品或者装置中还存在另外的相同要素。
上述本公开实施例序号仅仅为了描述,不代表实施例的优劣。
通过以上的实施方式的描述,本领域的技术人员可以清楚地了解到上述实施例方法可借助软件加必需的通用硬件平台的方式来实现,当然也可以通过硬件,但很多情况下前者是更佳的实施方式。基于这样的理解,本公开的技术方案本质上或者说对相关技术做出贡献的部分可以以软件产品的形式体现出来,该计算机软件产品存储在一个存储介质(如ROM/RAM、磁碟、光盘)中,包括若干指令用以使得一台终端(可以是手机,计算机,服务器,空调器,或者网络设备等)执行本公开各个实施例所述的方法。
可以理解的是,本公开实施例描述的这些实施例可以用硬件、软件、固件、中间件、微码或其组合来实现。对于硬件实现,处理单元可以实现在一个或多个专用集成电路(Application Specific Integrated Circuits,ASIC)、数字信号处理器(Digital Signal Processing,DSP)、数字信号处理设备(DSP Device,DSPD)、可编程逻辑设备(Programmable Logic Device,PLD)、现场可编程门阵列(Field-Programmable Gate Array,FPGA)、通用处理器、控制器、微控制 器、微处理器、用于执行本公开所述功能的其它电子单元或其组合中。
对于软件实现,可通过执行本公开实施例所述功能的模块(例如过程、函数等)来实现本公开实施例所述的技术。软件代码可存储在存储器中并通过处理器执行。存储器可以在处理器中或在处理器外部实现。
以上所述仅是本公开的可选的实施方式,应当指出,对于本技术领域的普通技术人员来说,在不脱离本公开原理的前提下,还可以做出若干改进和润饰,这些改进和润饰也应视为本公开的保护范围。

Claims (19)

  1. 一种信息获取方法,应用于终端,包括:
    接收第一网络设备发送的小区移动速度信息;
    其中,所述小区移动速度信息包括:所述第一网络设备的小区移动速度信息,和/或,与所述第一网络设备相邻的第二网络设备的小区移动速度信息。
  2. 根据权利要求1所述的方法,其中,所述接收第一网络设备发送的小区移动速度信息,包括:
    接收所述第一网络设备通过系统信息广播的所述小区移动速度信息;
    或者,
    接收所述第一网络设备通过专用信令发送的所述小区移动速度信息。
  3. 根据权利要求1所述的方法,其中,所述小区移动速度信息包括如下至少一项:
    小区相对于地面的速度值,和小区相对于地面的速度方向。
  4. 根据权利要求1所述的方法,其中,所述接收第一网络设备发送的小区移动速度信息之后,所述方法还包括:
    根据所述小区移动速度信息,执行与小区运动状态相关的通信行为。
  5. 根据权利要求4所述的方法,其中,所述根据所述小区移动速度信息,执行与小区运动状态相关的通信行为,包括:
    根据所述小区移动速度信息,估算预设时间内所述终端重选的各个小区在所述终端的运动方向上的移动位移所等效的地面网络普通小区数;
    根据估算得到的地面网络普通小区数,对所述终端在所述预设时间内重选小区的次数进行调整;
    利用调整后的重选小区的次数,确定所述终端的移动状态;
    根据与所述终端的移动状态相关的缩放因子,进行小区重选。
  6. 根据权利要求4所述的方法,其中,所述根据所述小区移动速度信息,执行与小区运动状态相关的通信行为,包括:
    根据所述小区移动速度信息,估算所述终端接入的小区在所述终端的运动方向上的分解矢量速度值;
    根据估算得到的分解矢量速度值,对所述终端的地面速度进行调整;
    利用调整后的所述终端的地面速度,进行多普勒频移估计。
  7. 一种信息发送方法,应用于第一网络设备,包括:
    向终端发送小区移动速度信息;
    其中,所述小区移动速度信息包括:所述第一网络设备的小区移动速度信息,和/或,与所述第一网络设备相邻的第二网络设备的小区移动速度信息。
  8. 根据权利要求7所述的方法,其中,所述向终端发送小区移动速度信息,包括:
    通过系统信息,向所述终端广播所述小区移动速度信息;
    或者,
    通过专用信令,向所述终端发送所述小区移动速度信息。
  9. 一种终端,包括:接收器;
    其中,所述接收器用于:接收第一网络设备发送的小区移动速度信息;
    所述小区移动速度信息包括:所述第一网络设备的小区移动速度信息,和/或,与所述第一网络设备相邻的第二网络设备的小区移动速度信息。
  10. 根据权利要求9所述的终端,其中,所述接收器具体用于:
    接收所述第一网络设备通过系统信息广播的所述小区移动速度信息;
    或者,
    接收所述第一网络设备通过专用信令发送的所述小区移动速度信息。
  11. 根据权利要求9所述的终端,其中,所述小区移动速度信息包括如下至少一项:
    小区相对于地面的速度值,和小区相对于地面的速度方向。
  12. 根据权利要求9所述的终端,其中,所述终端还包括:处理器;
    其中,所述处理器用于:根据所述小区移动速度信息,执行与小区运动状态相关的通信行为。
  13. 根据权利要求12所述的终端,其中,
    所述处理器还用于:根据所述小区移动速度信息,估算预设时间内所述终端重选的各个小区在所述终端的运动方向上的移动位移所等效的地面网络普通小区数;根据估算得到的地面网络普通小区数,对所述终端在所述预设 时间内重选小区的次数进行调整;利用调整后的重选小区的次数,确定所述终端的移动状态;根据与所述终端的移动状态相关的缩放因子,进行小区重选。
  14. 根据权利要求12所述的终端,其中,
    所述处理器还用于:根据所述小区移动速度信息,估算所述终端接入的小区在所述终端的运动方向上的分解矢量速度值;根据估算得到的分解矢量速度值,对所述终端的地面速度进行调整;利用调整后的所述终端的地面速度,进行多普勒频移估计。
  15. 一种第一网络设备,包括:发送器;
    其中,所述发送器用于:向终端发送小区移动速度信息;
    所述小区移动速度信息包括:所述第一网络设备的小区移动速度信息,和/或,与所述第一网络设备相邻的第二网络设备的小区移动速度信息。
  16. 根据权利要求15所述的第一网络设备,其中,所述发送器具体用于:
    通过系统信息,向所述终端广播所述小区移动速度信息;
    或者,
    通过专用信令,向所述终端发送所述小区移动速度信息。
  17. 一种终端,包括存储器、处理器及存储在所述存储器上并可在所述处理器上运行的计算机程序,其中,所述计算机程序被所述处理器执行时实现如权利要求1至6中任一项所述的信息获取方法的步骤。
  18. 一种第一网络设备,包括存储器、处理器及存储在所述存储器上并可在所述处理器上运行的计算机程序,其中,所述计算机程序被所述处理器执行时实现如权利要求7或8所述的信息发送方法的步骤。
  19. 一种计算机可读存储介质,所述计算机可读存储介质上存储有计算机程序,其中,所述计算机程序被处理器执行时实现如权利要求1至6中任一项所述的信息获取方法的步骤,或者如权利要求7或8所述的信息发送方法的步骤。
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