WO2020019320A1 - 同播系统的信道资源动态分配方法、装置及存储介质 - Google Patents

同播系统的信道资源动态分配方法、装置及存储介质 Download PDF

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Publication number
WO2020019320A1
WO2020019320A1 PCT/CN2018/097565 CN2018097565W WO2020019320A1 WO 2020019320 A1 WO2020019320 A1 WO 2020019320A1 CN 2018097565 W CN2018097565 W CN 2018097565W WO 2020019320 A1 WO2020019320 A1 WO 2020019320A1
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WIPO (PCT)
Prior art keywords
calling terminal
terminal
base station
location information
simulcast system
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Application number
PCT/CN2018/097565
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English (en)
French (fr)
Inventor
罗屹
李亚君
闫鹏
郑海涛
Original Assignee
哈尔滨海能达科技有限公司
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 哈尔滨海能达科技有限公司 filed Critical 哈尔滨海能达科技有限公司
Priority to PCT/CN2018/097565 priority Critical patent/WO2020019320A1/zh
Publication of WO2020019320A1 publication Critical patent/WO2020019320A1/zh

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
    • H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the present invention relates to the technical field of simulcast, and more particularly, to a method, a device, and a storage medium for dynamic channel resource allocation in a simulcast system.
  • Simulcast systems are mainly used along railways and highways to save limited frequency resources.
  • all base stations in the simulcast system will allocate channel resources with the same frequency at the same time (the digital system also needs a simultaneous slot), and the end user does not need to switch frequency points or time slots in the process of crossing the zone.
  • the talk group users in the system only occupy part of the channel resources of the base station at a time.
  • the system must Allocating channels under the base station of the system has a waste of channel resources.
  • the channel machine is often in the transmitting state, which also greatly reduces the service life of the system. The more base stations in the simulcast system, the longer the coverage line, the more serious this waste phenomenon.
  • a technical problem to be solved by the present invention is to provide a method, a device, and a storage medium for dynamically allocating channel resources of a simulcast system in response to the foregoing defects of the prior art.
  • the technical solution adopted by the present invention to solve its technical problems is to construct a method for dynamically allocating channel resources of a simulcast system, including the following steps:
  • the simulcast system receives a call request sent by a calling terminal, where the call request carries group attribute information of the calling terminal;
  • the simulcast system detects whether the currently adapted base station has an idle channel
  • the simulcast system detects that the currently adapted base station has an idle channel, the present adaptive base station allocates the idle channel to the calling terminal and the called terminal.
  • the first location information of the calling terminal is obtained by using the geographic location information of the calling terminal when sending the call request and / or the quality information of the uplink signal quality of the calling terminal when sending the call request.
  • the method further comprises:
  • the simulcast system detects that there are other group call services outside a preset distance range, the same frequency channel is allocated to the calling terminal and the called terminal.
  • the currently adapted base station of the calling terminal includes an initial base station corresponding to the first location information of the calling terminal and two base stations adjacent to the initial base station;
  • the currently adapted base station of the called terminal includes an initial base station corresponding to the first location information of the called terminal and two base stations adjacent to the initial base station.
  • the method further comprises:
  • determining the traveling direction of the calling terminal and the called terminal according to the second location information of the calling terminal and the called terminal includes:
  • the direction of travel of the terminal is determined according to the real-time geographic position and / or quality information of uplink signal quality of the calling terminal and the called terminal during the execution of the call service.
  • the step of adjusting the currently adapted base station according to the traveling direction of the calling terminal and the called terminal includes:
  • the current adapted base station is kept unchanged.
  • the calling terminal includes a first calling terminal and a second calling terminal
  • the call request includes a first call request and a second call request
  • the first location information of the calling terminal includes the first Location information of a calling terminal and location information of a second calling terminal
  • step S3 the method includes:
  • the method includes:
  • step S2-2 Determine whether the calling terminal belongs to a co-channel simulcast channel according to the group attribute information, and if yes, perform step S2.
  • the present invention also provides a computer device including a processor, and the processor is configured to implement the steps of the method described above when executing a computer program stored in a memory.
  • the present invention 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 steps of the method described above are implemented.
  • the simulcast system determines the initial allocated base station and the channel participating in the call according to the geographical location of the terminal or the uplink signal quality and the base station where the same talk group member is located. During the call, the system adjusts the base stations participating in the call at any time according to the position changes of the members of the talk group, and other simulcast base stations do not allocate channel resources. It realizes that the simulcast system can support more services on limited channel resources, improve the user experience, and at the same time reduce the transmission time of the channel machine, save system power consumption, extend system life, improve product competitiveness, and broader occupation Sales Market.
  • FIG. 1 is a schematic flowchart of Embodiment 1 of a channel resource dynamic allocation method of a simulcast system according to the present invention
  • Embodiment 2 is a schematic flowchart of Embodiment 2 of a channel resource dynamic allocation method of a simulcast system according to the present invention
  • FIG. 3 is a schematic flowchart of a specific embodiment of a channel resource dynamic allocation method of a simulcast system according to the present invention.
  • FIG. 4 is a dynamic schematic diagram of base station allocation of a channel resource dynamic allocation method of a simulcast system according to the present invention
  • FIG. 5 is a schematic diagram of base station allocation in the same direction for two groups of terminals in a method for dynamically allocating channel resources of a simulcast system according to the present invention
  • FIG. 6 is a schematic diagram of base station allocation in which two groups of terminals face each other in a method for dynamically allocating channel resources of a simulcast system according to the present invention
  • FIG. 7 is a schematic structural diagram of a computer device according to the present invention.
  • FIG. 1 it is a schematic flowchart of Embodiment 1 of a channel resource dynamic allocation method of a simulcast system according to the present invention.
  • the channel resource dynamic allocation method includes the following steps:
  • Step S1 The simulcast system receives a call request sent by a calling terminal, and the call request carries group attribute information of the calling terminal.
  • the group attribute information carried in the call request is used to identify whether the calling terminal is a calling terminal in a specific scenario, that is, it is used to identify whether the calling terminal is applicable to the dynamic channel allocation method.
  • specific scenarios can be railway, highway, and other scenarios.
  • step S2-2 Determine whether the calling terminal belongs to the same-frequency simulcast channel according to the group attribute information, and if yes, perform step S2.
  • Step S2 Acquire the first location information of the calling terminal according to the call request.
  • the first location information of the calling terminal may be obtained by using the geographic location information of the calling terminal when sending the call request and / or the quality information of the uplink signal quality of the calling terminal when sending the call request.
  • the geographic location information of the calling terminal can be obtained through a GPS positioning module set in the calling terminal. Through GPS positioning, the real-time geographic location of the calling terminal can be known.
  • Step S3 Determine the current adaptive base station of the calling terminal and the current adaptive base station of the called terminal according to the first location information of the calling terminal and the first location information of the called terminal.
  • the first location information of the called terminal may be obtained through geographic location information when the called terminal joins the group call and / or quality information of uplink signal quality of the called terminal.
  • the simulcast system can detect the current real-time geographic location information of the called terminal and the quality information of its uplink signal quality.
  • the calling terminal and the called terminal after determining their location information, their current adapted base stations can be determined.
  • the currently adapted base station can be the base station closest to the geographical location of the calling terminal (called terminal). However, in order to ensure that the calling terminal (called terminal) can always receive normal signals, Add multiple adjacent base stations on each side of the base station. Further, in order to save resources, one base station may be extended on each of the left and right sides of the nearest base station. Therefore, in the embodiment of the present invention, preferably, the currently adapted base station includes the currently adapted base station including an initial base station corresponding to the first location information of the calling terminal and two base stations adjacent to the initial base station. That is, the current adapted base station of the calling terminal includes an initial base station corresponding to the first location information of the calling terminal and two base stations adjacent to the initial base station. The currently adapted base station of the called terminal includes an initial base station corresponding to the first location information of the called terminal and two base stations adjacent to the initial base station.
  • Step S4 The simulcast system detects whether the currently adapted base station has an idle channel.
  • Step S5 If the simulcast system detects that the currently adapted base station has an idle channel, it allocates an idle channel to the calling terminal and the called terminal through the current adapted base station.
  • the method for dynamically allocating channel resources of the simulcast system according to the embodiment of the present invention further includes:
  • Step S6 If there is no idle channel in the currently adapted base station, it is detected whether there are other group call services outside the preset distance range, and if not, the channel is not allocated.
  • Step S7 If the simulcast system detects that there are other group call services outside the preset distance range, the same frequency channel is allocated to the calling terminal and the called terminal.
  • the channel resource dynamic allocation method of the present invention allocates as few base stations as possible in the same frequency region, when a group talks, only base stations adapted to the terminal location of the group are allocated, and the same Other base stations in the frequency region are not allocated. Therefore, when there is no complete idle channel on all simulcast base stations in the simulcast system, if there are other group call services outside the preset distance range, the group call initiated by the calling terminal can be allocated outside the preset distance range.
  • the preset distance range is within the same frequency region, and the distance between the two participating base stations of the call must satisfy the preset distance to avoid interference with each other during the call.
  • FIG. 2 it is a schematic flowchart of Embodiment 2 of a channel resource dynamic allocation method of a simulcast system according to the present invention.
  • This embodiment is executed after the first embodiment is completed. Specifically, after determining the current adapted base stations of the calling terminal and the called terminal, the calling terminal and the called terminal are allocated channels through the current adapted base station.
  • Step S21 Acquire second location information of the calling terminal and the called terminal.
  • the second location information of the calling terminal and the called terminal is obtained by using the quality information of the real-time geographic position and / or uplink signal quality of the calling terminal and the called terminal during the group call.
  • Step S22 Determine the traveling directions of the calling terminal and the called terminal according to the second location information of the calling terminal and the called terminal.
  • the traveling direction of the terminal is determined according to the real-time geographic position and / or quality information of the uplink signal quality during the calling service and the called terminal's execution of the call service.
  • the real-time geographic location of the calling terminal during the execution of the calling service is compared with the real-time geographic location when the call is initiated to determine the traveling direction of the calling terminal; or according to the quality information of the uplink signal quality of the calling terminal Can determine the direction of travel of the calling terminal.
  • the real-time geographic location of the called terminal during the execution of the call service is compared with the real-time geographic location when the group call is joined to determine the traveling direction of the called terminal; or according to the quality information of the uplink signal quality of the called terminal Can determine the direction of travel of the called terminal.
  • Step S23 Adjust the currently adapted base station according to the traveling directions of the calling terminal and the called terminal.
  • this step includes the following steps:
  • Step S231 Determine whether the second location information of the calling terminal and the called terminal meets a preset condition
  • Step S232 If yes, add a base station according to the traveling direction of the calling terminal and the called terminal as an adaptive base station when the terminal is located at the second location information, and simultaneously delete it in the reverse direction along the traveling direction of the calling terminal and the called terminal. The last base station.
  • Step S233 If the second location information of the calling terminal and the called terminal does not satisfy the preset condition, keep the current adapted base station unchanged.
  • the second location information of the calling terminal satisfies a preset condition as follows: the second location of the calling terminal has exceeded the range covered by the adaptive base station when sending the call. Therefore, at this time, the base station needs to be added along the traveling direction of the calling terminal so that the calling terminal can receive normal signals, and at the same time, the last base station is deleted in the reverse direction of its traveling direction to save resources.
  • the second location information of the called terminal satisfies a preset condition that the second location information of the called terminal has exceeded the range that the adaptive base station can cover when sending a call. Therefore, at this time, a base station needs to be added in the direction of travel of the called terminal so that the called terminal can receive normal signals, and at the same time, the last base station is deleted in the reverse direction of its direction of travel to save resources.
  • the second location information of the calling terminal does not satisfy the preset condition: the second location of the calling terminal is still in the range covered by the adapted base station, so there is no need to change the base station participating in the call.
  • first embodiment and the second embodiment described above are both a method for dynamically allocating channel resources of a simulcast system for initiating a group of calls.
  • the calling terminal includes a first calling terminal and a second calling terminal
  • the call request includes a first call request and a second call request
  • the first location information of the calling terminal includes the first calling terminal. Location information of the calling terminal and location information of the second calling terminal.
  • step S3 The following steps need to be performed before performing step S3:
  • Step S3-1 Determine whether the distance between the first calling terminal and the second calling terminal meets a preset distance requirement according to the location information of the first calling terminal and the location information of the second calling terminal.
  • Step S3-2 if yes, the current adaptive base station is allocated to the first calling terminal and the second calling terminal respectively according to the location information of the first calling terminal and the location information of the second calling terminal.
  • Step S3-3 If not, assign the current adapted base station to the terminal that initiated the call request first.
  • the group call initiated by the first calling terminal is defined as a first group call
  • the group call initiated by the second calling terminal is defined as a second group call. Therefore, when the distance between the first calling terminal and the second calling terminal satisfies the preset distance, since the base stations where the two terminals are located are sufficiently far apart, the simulcast system receives the control stop production uplink signals of the respective base stations without mutual interference. , The simulcast system can determine its own adapted base station through its respective location information (geographic location and / or uplink signal quality).
  • FIG. 3 it is a schematic flowchart of a specific embodiment of a method for dynamically allocating channel resources of a simulcast system.
  • the channel resource dynamic allocation method of the simulcast system in this embodiment includes the following steps:
  • Step S31 The calling terminal initiates a call request on the simulcast base station.
  • Step S32 The simulcast system receives a call request initiated by the calling terminal, acquires the current geographic location information and / or quality information of the uplink signal quality according to the call request initiated by the calling terminal, and according to the current Geographical location information and / or quality information of uplink signal quality, and current geographic location information and / or quality of uplink signal quality information of the called terminal, determine the currently adapted base station of the calling terminal and the currently adapted base station of the called terminal .
  • Step S33 The simulcast system queries whether there are complete idle channels on all simulcast base stations.
  • Step S34 If yes, allocate the queried idle channel on the currently adapted base station.
  • Step S35 If not, it is detected whether there are other group calls outside the preset distance range.
  • Step S36 If not, no traffic channel is allocated.
  • Step S37 If there is, assign the same frequency service channel to the calling terminal and the called terminal through the currently adapted base station.
  • the same-frequency traffic channel is a traffic channel of other group calls outside the preset distance range detected in step S35.
  • Step S38 During the call between the calling terminal and / or the called terminal, the simulcast system detects the second location information of the calling terminal and / or the called terminal in real time, and obtains the direction of travel of the calling terminal and the called terminal.
  • Step S39 Determine whether the second location information of the calling terminal and the called terminal meets a preset condition.
  • Step S40 If yes, add a base station according to the traveling direction of the calling terminal and the called terminal as an adaptive base station when the terminal is located at the second location information, and simultaneously delete it in the reverse direction along the traveling direction of the calling terminal and the called terminal. The last base station.
  • Step S41 If not, keep the current adapted base station unchanged.
  • the "distance range" when the simulcast system determines whether there are other calls outside the preset distance range is related to the specific scenario, and can be set according to different application scenarios.
  • the base station may be selected by the geographical location selection of the terminal and the uplink signal quality determination.
  • the base station may also be selected by using the combined (weighted) determination of the geographical location and the uplink signal quality.
  • FIG. 4 a schematic diagram of base station allocation dynamics of a channel resource dynamic allocation method of a simulcast system according to the present invention.
  • the simulcast system is a simulcast system on a certain railway, and members of the same talk group are all on the same train.
  • the user on the train initiates a call while the train is moving.
  • the simulcast system determines the location information uploaded by the calling terminal and the location information of the same talk group member (the called terminal may be one or more), and determines The current adaptation base station of the talk group.
  • the location information of the calling terminal may be determined according to the geographic location information uploaded by the calling terminal or the difference between the uplink signal quality of the calling terminal at each base station, and then the current adapted base station is allocated to the calling terminal and the called terminal. Because the direction of the terminal cannot be determined based on the initial position information, in order to ensure that the calling terminal and the called terminal can always receive signals from the normal base station, one base station can be extended on each side of the determined initial base station.
  • the simulcast system determines that the initial base station is site02 according to the location information of the calling terminal and the called terminal, and also adds site01 and site03 to the participating stations, that is, the currently adapted base stations include site01, site02, and site03.
  • the simulcast system adjusts the base stations participating in the call at any time according to the position changes of the members of the talk group. As shown in FIG. 4, when the calling terminal and the called terminal are moving, the simulcast system has determined the direction of the calling terminal and the called terminal (by the direction ⁇ ) through the position change. In the direction of travel, The system adjusts the participating base stations at any time. When the calling terminal and the called terminal reach the coverage area of the site03 base station, the simulcast system adds the site04 base station to the participating stations and removes the site01 base station.
  • FIG. 5 is a schematic diagram of base station allocation in the same direction for two groups of terminals in a method for dynamically allocating channel resources of a simulcast system according to the present invention.
  • the calling terminals on the two trains respectively initiate different group calls. Since the base stations where the two calling terminals are located are sufficiently far apart, the simulcast system receives the uplink control channel signals of the respective base stations without mutual interference. The simulcast system allocates its own adaptive base station in the same frequency area through the selection of the respective signal quality or geographical location. Because the distance is always kept far enough, there is no signal interference between two different group calls, and the simulcast system can allocate the same frequency traffic channel. During the call, the simulcast system adjusts the base stations participating in the call and the service channels participating in the call according to the changes in the position of the talk group members.
  • FIG. 6 it is a schematic diagram of base station allocation where two groups of terminals face each other in a method for dynamically allocating channel resources of a simulcast system according to the present invention.
  • the safety distance can be set as the number of base station intervals according to parameters such as vehicle speed, base station interval, and system call time limit. For example, if the base station in the same frequency area has only one channel, the safety distance interval is 5 base stations. Terminals in the same direction or opposite to each other initiate different groups. If the base station location of the two terminals is greater than 5, the same frequency slot is allocated. Channel; if the base station where the two terminals are located is less than 5, the later-initiated terminal cannot establish a call.
  • the simulcast system determines the initial allocation of the base station according to the location of the calling terminal and the location of the same talk group member.
  • the determination of the location of the terminal may be determined based on the geographic location information uploaded by the terminal or the difference in the quality of the uplink signal of the terminal at each base station.
  • the system adjusts the base stations participating in the call at any time according to the position changes of the members of the talk group.
  • the base stations and channel assignments participating in this group of calls are based on the standard that they can complete normal calls in the movement of members of this group, with the least number of base stations assigned.
  • the channel resources saved by the base station can be used by other talk groups, and the channels of different talk groups at the same time in the same frequency area can be shared. Under the existing system scale, the system traffic volume is greatly improved.
  • the average working time of each channel machine is greatly reduced, thereby reducing the power consumption of the system, increasing the service life of the system, and reducing the possibility of the system to the surrounding environment. Bring frequency interference and electromagnetic radiation.
  • FIG. 7 is a schematic structural diagram of a computer device according to the present invention. As shown in FIG. 7, the computer apparatus includes a processor, and the processor is configured to implement the steps of the foregoing method when executing a computer program stored in a memory.
  • the present invention also provides a computer-readable storage medium on which a computer program is stored.
  • a computer program is stored on which a computer program is stored.

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Abstract

本发明涉及一种同播系统的信道资源动态分配方法、装置及存储介质，包括：S1、同播系统接收终端发送的呼叫请求，呼叫请求携带有终端的组属性信息；S2、根据呼叫请求获取终端的第一位置信息；S3、根据终端的第一位置信息确定当前适配基站；S4、同播系统检测当前适配基站是否有空闲信道；S5、若同播系统检测到当前适配基站有空闲信道，则通过当前适配基站分配空闲信道。本发明实现了同播系统在有限的信道资源上可以支持更多的业务，改善了用户体验，同时降低了信道机的发射时间，节约系统耗电，延长系统寿命，提高产品竞争力，更广泛的占领销售市场。

Description

同播系统的信道资源动态分配方法、装置及存储介质 技术领域
本发明涉及同播技术领域，更具体地说，涉及一种同播系统的信道资源动态分配方法、装置及存储介质。
 背景技术
同播系统主要应用在铁路、高速公路沿线，用以节约有限的频率资源。在呼叫建立时，同播系统下的所有基站会同时分配频率相同的信道资源（数字系统还需要同时隙 ），终端用户在越区过程中无需切换频点或时隙。但是，在实际应用过程中我们发现，系统中的通话组用户每次只占用部分基站信道资源，然而按照目前的信道分配方法，虽然多数基站下并没有该通话组的用户，系统一样要在所有的基站下分配信道，存在信道资源浪费的情况，同时由于信道机经常处在发射状态，还大大降低了系统使用寿命。该同播系统基站越多，覆盖线路越长，这种浪费现象越严重。
当某个列车上终端发起呼叫后，不仅其所对应的基站会分配信道，同时这个同频区的所有基站都会分配信道，即使某些基站并没有该通话组的用户，这样就造成了信道资源的浪费。如图1中所示，用户在site02基站下发起呼叫，不管其他基站是否有被叫用户，都会分配信，进而导致信道资源被严重浪费。
 技术问题
本发明要解决的技术问题在于，针对现有技术的上述缺陷，提供一种同播系统的信道资源动态分配方法、装置及存储介质。
 技术解决方案
本发明解决其技术问题所采用的技术方案是：构造一种同播系统的信道资源动态分配方法，包括以下步骤：
S1、同播系统接收主叫终端发送的呼叫请求，所述呼叫请求携带有所述主叫终端的组属性信息；
S2、根据所述呼叫请求获取所述主叫终端的第一位置信息；
S3、根据所述主叫终端的第一位置信息，并结合被叫终端的第一位置信息确定所述主叫终端的当前适配基站和所述被叫终端的当前适配基站；
S4、所述同播系统检测所述当前适配基站是否有空闲信道；
S5、若所述同播系统检测到所述当前适配基站有空闲信道，则通过所述当前适配基站向所述主叫终端和被叫终端分配所述空闲信道。
优选地，所述主叫终端的第一位置信息通过所述主叫终端在发送呼叫请求时的地理位置信息和/或所述主叫终端在发送呼叫请求时的上行信号质量的质量信息获取。
优选地，所述方法还包括：
S6、若所述当前适配基站无空闲信道，检测预设距离范围外是否有其他组呼业务，若无，则不分配信道；
S7、若所述同播系统检测到在预设距离范围外有其他组呼业务，则向所述主叫终端和被叫终端分配同频率信道。
优选地，所述主叫终端的当前适配基站包括与所述主叫终端的第一位置信息对应的初始基站以及与初始基站相邻的两个基站；
所述被叫终端的当前适配基站包括与所述被叫终端的第一位置信息对应的初始基站以及与初始基站相邻的两个基站。
优选地，所述方法还包括：
在所述主叫终端和被叫终端执行呼叫业务过程中：
获取所述主叫终端和被叫终端的第二位置信息；
根据所述主叫终端和被叫终端的第二位置信息确定所述主叫终端和被叫终端的行进方向；
根据所述主叫终端和被叫终端的行进方向调整所述当前适配基站。
优选地，所述根据所述主叫终端和被叫终端的第二位置信息确定所述主叫终端和被叫终端的行进方向包括：
根据所述主叫终端和被叫终端在执行呼叫业务过程中的实时地理位置和/或上行信号质量的质量信息确定所述终端的行进方向。
优选地，所述根据所述主叫终端和被叫终端的行进方向调整所述当前适配基站的步骤包括：
判断所述主叫终端和被叫终端的第二位置信息是否满足预设条件；
若是，则依据所述主叫终端和被叫终端的行进方向增加基站以作为所述主叫终端和被叫终端位于第二位置信息时的适配基站，同时，沿所述主叫终端和被叫终端的行进方向的反向删除最后的基站。
优选地，若所述主叫终端和被叫终端的第二位置信息不满足预设条件，则保持所述当前适配基站不变。
优选地，所述主叫终端包括第一主叫终端和第二主叫终端，所述呼叫请求包括第一呼叫请求和第二呼叫请求，所述主叫终端的第一位置信息包括所述第一主叫终端的位置信息和第二主叫终端的位置信息；
所述步骤S3之前包括：
S3-1、根据所述第一主叫终端的位置信息和所述第二主叫终端的位置信息，判断所述第一主叫终端和第二主叫终端之间的距离是否满足预设距离要求；
S3-2、若是，则根据所述第一主叫终端的位置信息和所述第二主叫终端的位置信息，分别向所述第一主叫终端和第二主叫终端分配当前适配基站；
S3-3、若否，则向先发起呼叫请求的终端分配当前适配基站。
优选地，所述步骤S2之前包括：
S2-1、根据所述呼叫请求获取所述主叫终端的组属性信息；
S2-2、根据所述组属性信息判断所述主叫终端是否属于同频同播信道，若是，执行步骤S2。
本发明还提供一种计算机装置，所述计算机装置包括处理器，所述处理器用于执行存储器中存储的计算机程序时实现如上所述方法的步骤。
本发明还提供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实现如上所述方法的步骤。
 有益效果
本发明在终端建立呼叫时，同播系统根据终端的地理位置或者上行信号质量、同一通话组成员所在基站确定初始分配基站以及参与通话的信道。在通话过程中系统根据本通话组成员的位置变化等情况随时调整参与通话的基站，其他同播基站不分配信道资源。实现了同播系统在有限的信道资源上可以支持更多的业务，改善了用户体验，同时降低了信道机的发射时间，节约系统耗电，延长系统寿命，提高产品竞争力，更广泛的占领销售市场。
 附图说明
图1是本发明一种同播系统的信道资源动态分配方法实施例一的流程示意图；
图2是本发明一种同播系统的信道资源动态分配方法实施例二的流程示意图；
图3是本发明一种同播系统的信道资源动态分配方法一具体实施例的流程示意图；
图4是本发明一种同播系统的信道资源动态分配方法的基站分配动态示意图；
图5是本发明一种同播系统的信道资源动态分配方法中两组终端同一方向的基站分配示意图；
图6是本发明一种同播系统的信道资源动态分配方法中两组终端相向的基站分配示意图；
图7是本发明一种计算机装置的结构示意图。
 本发明的最佳实施方式
为了对本发明的技术特征、目的和效果有更加清楚的理解，现对照附图详细说明本发明的具体实施方式。
参见图1，为本发明一种同播系统的信道资源动态分配方法实施例一的流程示意图。
该实施例中，该信道资源动态分配方法包括以下步骤：
步骤S1、同播系统接收主叫终端发送的呼叫请求，呼叫请求携带有主叫终端的组属性信息。
这里呼叫请求中所携带的组属性信息用于标识该主叫终端是否为特定场景的主叫终端，即该标识该主叫终端是否适用动态信道分配方法。其中，特定场景可以为铁路、高速公路等场景，通过此组属性信息判断是否可以动态的分配参与基站以及同频率同时隙复用信道，若不属于同频同播信道，则按原来的同播系统信道分配方法。
具体的，在接收到主叫终端发送的呼叫请求后，执行以下步骤：
S2-1、根据呼叫请求获取主叫终端的组属性信息；
S2-2、根据组属性信息判断主叫终端是否属于同频同播信道，若是，执行步骤S2。
步骤S2、根据呼叫请求获取主叫终端的第一位置信息。
可选的，主叫终端的第一位置信息可以通过主叫终端在发送呼叫请求时的地理位置信息和/或主叫终端在发送呼叫请求时的上行信号质量的质量信息获取。
其中，主叫终端的地理位置信息可以通过主叫终端中设置的GPS定位模块获取。通过GPS定位，可以知道主叫终端的实时地理位置。
步骤S3、根据主叫终端的第一位置信息，并结合被叫终端的第一位置信息确定主叫终端的当前适配基站和被叫终端的当前适配基站。
这里被叫终端的第一位置信息可以通过被叫终端加入该组呼时的地理位置信息和/或被叫终端的上行信号质量的质量信息获取。具体的，当被叫终端加入该组呼时，同播系统即可检测到被叫终端的当前实时地理位置信息以及其上行信号质量的质量信息。
具体的，对于主叫终端和被叫终端，当确定他们的位置信息后，即可确定它们的当前适配基站。
一般地，当前适配基站可以为与主叫终端（被叫终端）的地理位置最近的基站，但是，为了保证主叫终端（被叫终端）始终能够收到正常的信号，因此，可以在最近的基站两边各增加多个相邻基站。进一步地，为了节省资源，可在最近基站的左右两边各延伸一个基站。因此，本发明实施例中，优选的，当前适配基站包括当前适配基站包括与主叫终端的第一位置信息对应的初始基站以及与初始基站相邻的两个基站。也就是说，主叫终端的当前适配基站包括与主叫终端的第一位置信息对应的初始基站以及与初始基站相邻的两个基站。被叫终端的当前适配基站包括与被叫终端的第一位置信息对应的初始基站以及与初始基站相邻的两个基站。
步骤S4、同播系统检测当前适配基站是否有空闲信道。
步骤S5、若同播系统检测到当前适配基站有空闲信道，则通过当前适配基站向主叫终端和被叫终端分配空闲信道。
进一步地，本发明实施例的同播系统的信道资源动态分配方法还包括：
步骤S6、若当前适配基站无空闲信道，检测预设距离范围外是否有其他组呼业务，若无，则不分配信道。
步骤S7、若同播系统检测到在预设距离范围外有其他组呼业务，则向主叫终端和被叫终端分配同频率信道。
可以理解地，由于本发明的信道资源动态分配方法是在同频区内，分配尽量少的基站，因此，当某个组通话时只分配了与该组的终端位置适配的基站，而同频区内的其他基站没有被分配。因此，当同播系统中所有同播基站上没有完整的空闲信道时，若在预设距离范围外有其他组呼业务，则可向该主叫终端所发起的组呼叫分配预设距离范围外的组呼业务的同频率业务信道。其中，这里的预设距离范围为在同一个同频区内，这两组通话的参与基站之间的距离要满足预设距离，以避免通话过程中彼此受到干扰。
参见图2，为本发明一种同播系统的信道资源动态分配方法实施例二的流程示意图。
该实施例在实施例一完成后执行。具体的，当确定主叫终端和被叫终端的当前适配基站后，通过当前适配基站向主叫终端和被叫终端分配信道。
在主叫终端和被叫终端执行呼叫业务过程中，即主叫终端和被叫终端进行组通话过程中，执行以下步骤：
步骤S21、获取主叫终端和被叫终端的第二位置信息。
其中，主叫终端和被叫终端的第二位置信息通过主叫终端和被叫终端在执行组通话过程中的实时地理位置和/或上行信号质量的质量信息获取。
步骤S22、根据主叫终端和被叫终端的第二位置信息确定主叫终端和被叫终端的行进方向。
该步骤中，根据主叫终端和被叫终端在执行呼叫业务过程中的实时地理位置和/或上行信号质量的质量信息确定终端的行进方向。
具体的，根据主叫终端在执行呼叫业务过程中的实时地理位置与发起呼叫时的实时地理位置进行比对，可以确定主叫终端的行进方向；或者根据主叫终端的上行信号质量的质量信息的强弱，可以确定主叫终端的行进方向。同样地，被叫终端在执行呼叫业务过程中的实时地理位置与加入组呼时的实时地理位置进行比对，可以确定被叫终端的行进方向；或者根据被叫终端的上行信号质量的质量信息的强弱，可以确定被叫终端的行进方向。
步骤S23、根据主叫终端和被叫终端的行进方向调整当前适配基站。
具体的，该步骤包括以下步骤：
步骤S231、判断主叫终端和被叫终端的第二位置信息是否满足预设条件；
步骤S232、若是，则依据主叫终端和被叫终端的行进方向增加基站以作为终端位于第二位置信息时的适配基站，同时，沿主叫终端和被叫终端的行进方向的反向删除最后的基站。
步骤S233、若主叫终端和被叫终端的第二位置信息不满足预设条件，则保持当前适配基站不变。
这里主叫终端的第二位置信息满足预设条件为：主叫终端的第二位置已超出发送呼叫时的适配基站所能覆盖的范围。所以，此时，需沿主叫终端的行进方向增加基站以使主叫终端可以接收到正常信号，同时，沿其行进方向的反向删除最后的基站，以节省资源。同样的，被叫终端的第二位置信息满足预设条件为：被叫终端的第二位置信息已超出发送呼叫时的适配基站所能覆盖的范围。所以，此时，需沿被叫终端的行进方向增加基站以使被叫终端可以接收到正常信号，同时，沿其行进方向的反向删除最后的基站，以节省资源。
主叫终端的第二位置信息不满足预设条件为：主叫终端的第二位置仍处于适配基站所能覆盖的范围，因此，不需要改变参与通话的基站。
需要说明的是，上述实施例一和实施例二均为发起一组呼叫的同播系统的信道资源动态分配方法。
当在一个同频区内，如果有两个不同的组呼需要建立时，则需按以下方法进行处理。
具体的，在该实施例中，主叫终端包括第一主叫终端和第二主叫终端，呼叫请求包括第一呼叫请求和第二呼叫请求，主叫终端的第一位置信息包括第一主叫终端的位置信息和第二主叫终端的位置信息。
在执行步骤S3之前需执行以下步骤：
步骤S3-1、根据第一主叫终端的位置信息和第二主叫终端的位置信息，判断第一主叫终端和第二主叫终端之间的距离是否满足预设距离要求。
步骤S3-2、若是，则根据第一主叫终端的位置信息和第二主叫终端的位置信息，分别向第一主叫终端和第二主叫终端分配当前适配基站。
步骤S3-3、若否，则向先发起呼叫请求的终端分配当前适配基站。
这里，第一主叫终端所发起的组呼定义为第一组呼，第二主叫终端所发起的组呼定义为第二组呼。因此，当第一主叫终端和第二主叫终端之间的距离满足预设距离时，由于两个终端所在基站间隔足够远，同播系统接收到各自基站的控制停产上行信号不存在相互干扰，同播系统可以通过各自的位置信息（地理位置和/或上行信号质量）确定各自的适配基站。
相反，若第一主叫终端和第二主叫终端之间的距离达不到预设距离要求，则会产生信号干扰。此时，只给先发起组呼请求的终端分配适配基站，后发起组呼请求的终端不分配，即后发起组呼请求的终端无法建立呼叫。
参见图3，为一种同播系统的信道资源动态分配方法一具体实施例的流程示意图。
如图3所示，该实施例的同播系统的信道资源动态分配方法包括以下步骤：
步骤S31、主叫终端在同播基站上发起呼叫请求。
步骤S32、同播系统接收到主叫终端发起的呼叫请求，根据主叫终端发起的呼叫请求获取主叫终端当前的地理位置信息和/或上行信号质量的质量信息，并根据主叫终端当前的地理位置信息和/或上行信号质量的质量信息，以及被叫终端当前的地理位置信息和/或上行信号质量的质量信息，确定主叫终端的当前适配基站和被叫终端的当前适配基站。
步骤S33、同播系统查询所有同播基站上是否有完整的空闲信道。
步骤S34、若是，则在当前适配基站上分配所查询到的空闲信道。
步骤S35、若否，则检测在预设距离范围外是否还有其他组呼叫。
步骤S36、若无，则不分配业务信道。
步骤S37、若有，则通过当前适配基站给主叫终端和被叫终端分配同频率业务信道。其中，该同频率业务信道为步骤S35中检测的预设距离范围外的其他组呼叫的业务信道。
步骤S38、主叫终端和/或被叫终端通话过程中，同播系统实时检测主叫终端和/或被终端的第二位置信息，获取主叫终端和被叫终端的行进方向。
步骤S39、判断主叫终端和被叫终端的第二位置信息是否满足预设条件。
步骤S40、若是，则依据主叫终端和被叫终端的行进方向增加基站以作为终端位于第二位置信息时的适配基站，同时，沿主叫终端和被叫终端的行进方向的反向删除最后的基站。
步骤S41、若否，则保持当前适配基站不变。
在该实施例中，同播系统判断预设距离范围外是否有其他呼叫时的“距离范围”和具体场景有关，可根据不同的应用场景进行设置。初始基站分配、判断终端移动方向时，通过终端地理位置判选与上行信号质量判定选择基站皆可，也可使用地理位置与上行信号质量两个条件进行综合（加权）判定选择基站。
参见图4，本发明一种同播系统的信道资源动态分配方法的基站分配动态示意图。
这里，假设同播系统为某一铁路上的同播系统，同一个通话组的成员都在同一列车上。列车在行驶过程中，车上的用户发起呼叫。
如图4所示，在主叫终端发起呼叫请求时，同播系统根据主叫终端的上传的位置信息，以及同一通话组成员（被叫终端，可以为一个或多个）的位置信息，确定通话组的当前适配基站。其中，主叫终端的位置信息可以根据主叫终端上传的地理位置信息或主叫终端的上行信号质量在各个基站的差异来确定，进而向主叫终端和被叫终端分配当前的适配基站。由于根据初始的位置信息无法判断终端的行进方向，为了保证主叫终端和被叫终端始终能够收到正常基站的信号，可以在判定的初始基站两边再各延伸一个基站。考虑到主叫终端和被叫终端的位置信息只是一个坐标，并不知道的运动方向，所已在与其位置最近的基站（初始基站）两边在各增加一个参与基站，另外也有可能主叫终端和被叫终端正处在基站信号覆盖的边缘位置，在往前就没信号了，所以为了保证主叫终端和被叫终端始终在基站的覆盖范围内，所以在初始基站两边再各延伸一个基站。如图4所示，同播系统根据主叫终端和被叫终端的位置信息判定初始基站为site02，同时将site01和site03也加入到参与站，即当前适配基站包括site01、site02和site03。
在通话过程中同播系统根据本通话组成员的位置变化情况随时调整参与通话的基站。如图4所示，当主叫终端和被叫终端在移动过程中，通过位置变化情况同播系统已经确定了主叫终端和被叫终端的行进方向（方向为由→），在行进方向上系统随时调整参与基站，当主叫终端和被叫终端抵达site03基站的覆盖区域时，同播系统将site04基站加入到参与站里，同时将site01基站移除。
参见图5，为本发明一种同播系统的信道资源动态分配方法中两组终端同一方向的基站分配示意图。
如图5所示，两辆列车上的主叫终端分别发起不同的组呼，由于两个主叫终端所在基站间隔足够远，同播系统收到各自基站的控制信道上行信号不存在相互干扰，同播系统通过各自信号质量或地理位置的判选，在同频区内，分配各自的适配基站。由于距离始终保持足够远，两个不同组呼之间不存在信号干扰，同播系统可以分配同频率业务信道。在通话过程中，同播系统根据通话组成员的位置变化调整参与通话的基站以及参与通话的业务信道。
参见图6，为本发明一种同播系统的信道资源动态分配方法中两组终端相向的基站分配示意图。
如图6所示，同频率同时隙信道复用时，两车应保证足够的安全距离间隔。安全距离可根据车速、基站间隔、系统通话限时等参数设定为基站间隔个数。例如同频区基站只有一个信道的情况下，安全距离间隔为5个基站，同一方向或相向两车的终端分别发起不同的组，如果两个终端所在基站间隔大于5，则分配同频率同时隙信道；如果两个终端所在基站间隔小于5，则后发起的终端无法建立呼叫。
本发明在终端建立呼叫时，同播系统根据主叫终端的位置，同一通话组成员的位置情况，确定初始分配基站。终端位置的判定可以根据终端上传的地理位置信息或终端上行信号质量在各基站的差异来确定。
在通话过程中系统根据本通话组成员的位置变化情况随时调整参与通话的基站。参与本组通话的基站、信道分配以在该组成员运动中能够完成正常通话为标准，分配最少的基站。相对于普通同播系统所节约的基站信道资源可以给其他通话组使用，实现同频区同一时刻不同通话组的信道共用，在现有的系统规模下，大大提升系统话务量。另外，相对于普通同播系统，同样的载频配置，平均每个信道机的工作时间大幅度减少，从而减少了系统的耗电量，提高了系统的使用寿命，降低了系统对周围环境可能带来的频率干扰和电磁辐射。
参见图7，为本发明一种计算机装置的结构示意图。如图7所示，该计算机装置包括处理器，处理器用于执行存储器中存储的计算机程序时实现上述方法的步骤。
本发明还提供一种计算机可读存储介质，其上存储有计算机程序，所存储的计算机程序被处理器执行时实现上述方法的步骤。
以上实施例只为说明本发明的技术构思及特点，其目的在于让熟悉此项技术的人士能够了解本发明的内容并据此实施，并不能限制本发明的保护范围。凡跟本发明权利要求范围所做的均等变化与修饰，均应属于本发明权利要求的涵盖范围。
应当理解的是，对本领域普通技术人员来说，可以根据上述说明加以改进或变换，而所有这些改进和变换都应属于本发明所附权利要求的保护范围。

Claims (12)

  1. 一种同播系统的信道资源动态分配方法，其特征在于，包括以下步骤：
    S1、同播系统接收主叫终端发送的呼叫请求，所述呼叫请求携带有所述主叫终端的组属性信息；
    S2、根据所述呼叫请求获取所述主叫终端的第一位置信息；
    S3、根据所述主叫终端的第一位置信息，并结合被叫终端的第一位置信息确定所述主叫终端的当前适配基站和所述被叫终端的当前适配基站；
    S4、所述同播系统检测所述当前适配基站是否有空闲信道；
    S5、若所述同播系统检测到所述当前适配基站有空闲信道，则通过所述当前适配基站向所述主叫终端和被叫终端分配所述空闲信道。
  2. 根据权利要求1所述的同播系统的信道资源动态分配方法，其特征在于，所述主叫终端的第一位置信息通过所述主叫终端在发送呼叫请求时的地理位置信息和/或所述主叫终端在发送呼叫请求时的上行信号质量的质量信息获取。
  3. 根据权利要求1所述的同播系统的信道资源动态分配方法，其特征在于，所述方法还包括：
    S6、若所述当前适配基站无空闲信道，检测预设距离范围外是否有其他组呼业务，若无，则不分配信道；
    S7、若所述同播系统检测到在预设距离范围外有其他组呼业务，则向所述主叫终端和被叫终端分配同频率信道。
  4. 根据权利要求1所述的同播系统的信道资源动态分配方法，其特征在于，所述主叫终端的当前适配基站包括与所述主叫终端的第一位置信息对应的初始基站以及与初始基站相邻的两个基站；
    所述被叫终端的当前适配基站包括与所述被叫终端的第一位置信息对应的初始基站以及与初始基站相邻的两个基站。
  5. 根据权利要求1所述的同播系统的信道资源动态分配方法，其特征在于，所述方法还包括：
    在所述主叫终端和被叫终端执行呼叫业务过程中：
    获取所述主叫终端和被叫终端的第二位置信息；
    根据所述主叫终端和被叫终端的第二位置信息确定所述主叫终端和被叫终端的行进方向；
    根据所述主叫终端和被叫终端的行进方向调整所述当前适配基站。
  6. 根据权利要求5所述的同播系统的信道资源动态分配方法，其特征在于，所述根据所述主叫终端和被叫终端的第二位置信息确定所述主叫终端和被叫终端的行进方向包括：
    根据所述主叫终端和被叫终端在执行呼叫业务过程中的实时地理位置和/或上行信号质量的质量信息确定所述终端的行进方向。
  7. 根据权利要求5所述的同播系统的信道资源动态分配方法，其特征在于，所述根据所述主叫终端和被叫终端的行进方向调整所述当前适配基站的步骤包括：
    判断所述主叫终端和被叫终端的第二位置信息是否满足预设条件；
    若是，则依据所述主叫终端和被叫终端的行进方向增加基站以作为所述主叫终端和被叫终端位于第二位置信息时的适配基站，同时，沿所述主叫终端和被叫终端的行进方向的反向删除最后的基站。
  8. 根据权利要求7所述的同播系统的信道资源动态分配方法，其特征在于，若所述主叫终端和被叫终端的第二位置信息不满足预设条件，则保持所述当前适配基站不变。
  9. 根据权利要求1所述的同播系统的信道资源动态分配方法，其特征在于，所述主叫终端包括第一主叫终端和第二主叫终端，所述呼叫请求包括第一呼叫请求和第二呼叫请求，所述主叫终端的第一位置信息包括所述第一主叫终端的位置信息和第二主叫终端的位置信息；
    所述步骤S3之前包括：
    S3-1、根据所述第一主叫终端的位置信息和所述第二主叫终端的位置信息，判断所述第一主叫终端和第二主叫终端之间的距离是否满足预设距离要求；
    S3-2、若是，则根据所述第一主叫终端的位置信息和所述第二主叫终端的位置信息，分别向所述第一主叫终端和第二主叫终端分配当前适配基站；
    S3-3、若否，则向先发起呼叫请求的终端分配当前适配基站。
  10. 根据权利要求1所述的同播系统的信道资源动态分配方法，其特征在于，所述步骤S2之前包括：
    S2-1、根据所述呼叫请求获取所述主叫终端的组属性信息；
    S2-2、根据所述组属性信息判断所述主叫终端是否属于同频同播信道，若是，执行步骤S2。
  11. 一种计算机装置，其特征在于，所述计算机装置包括处理器，所述处理器用于执行存储器中存储的计算机程序时实现如权利要求1-10任一项所述方法的步骤。
  12. 一种计算机可读存储介质，其上存储有计算机程序，其特征在于，所述计算机程序被处理器执行时实现如权利要求1-10任一项所述方法的步骤。
     
PCT/CN2018/097565 2018-07-27 2018-07-27 同播系统的信道资源动态分配方法、装置及存储介质 WO2020019320A1 (zh)

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