WO2020140426A1 - 一种多路无线全双工通信方法及系统 - Google Patents

一种多路无线全双工通信方法及系统 Download PDF

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Publication number
WO2020140426A1
WO2020140426A1 PCT/CN2019/097638 CN2019097638W WO2020140426A1 WO 2020140426 A1 WO2020140426 A1 WO 2020140426A1 CN 2019097638 W CN2019097638 W CN 2019097638W WO 2020140426 A1 WO2020140426 A1 WO 2020140426A1
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voice data
communication
relay
relay station
time slot
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PCT/CN2019/097638
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English (en)
French (fr)
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方桂成
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上海纳雅智能科技有限公司
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Publication of WO2020140426A1 publication Critical patent/WO2020140426A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/14—Two-way operation using the same type of signal, i.e. duplex
    • H04L5/1469—Two-way operation using the same type of signal, i.e. duplex using time-sharing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/022—Site diversity; Macro-diversity
    • H04B7/026—Co-operative diversity, e.g. using fixed or mobile stations as relays
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H04B7/155—Ground-based stations
    • H04B7/15507—Relay station based processing for cell extension or control of coverage area

Definitions

  • the invention relates to the technical field of communication, in particular to a multi-channel wireless full-duplex communication method; and also to a multi-channel wireless full-duplex communication system.
  • the walkie-talkie is a wireless communication terminal device capable of point-to-multipoint communication, which enables multiple people to listen to the same person's speech at the same time. It has the characteristics of timely communication, one-call response, economical and practical, low operating cost, and no communication cost. It also has the functions of group call broadcast, system call, confidential call and so on. When dealing with emergencies, its role in dispatching and commanding cannot be replaced by other communication tools. Existing FM intercoms and digital intercoms allow only one person to speak at a time, while others answer. Can no longer meet the urgent needs of simultaneous multi-party calls. Although there are a variety of solutions that support full-duplex communication, each solution has its own drawbacks.
  • the object of the present invention is to provide a multi-channel full-duplex communication method and system that supports one-to-one calls and multi-party calls, realizes simultaneous listening by multiple people, and can realize wireless network coverage in a larger geographical area.
  • the present invention provides a multi-channel full-duplex communication method, including:
  • the communication terminal selects a communication time slot according to the time slot allocation strategy and sends voice data through the communication time slot;
  • the relay station receives the voice data sent by each communication terminal through the corresponding communication time slot
  • the relay station transmits the voice data through the relay time slot.
  • the relay station receiving the voice data sent by each communication terminal through the corresponding communication time slot includes:
  • the relay station receives the voice data sent by the local communication terminal through the corresponding communication time slot.
  • the relay station receiving the voice data sent by each communication terminal through the corresponding communication time slot includes:
  • the relay station receives the voice data sent by the local communication terminal through the corresponding communication slot and receives the voice data sent by the remote communication terminal through the corresponding communication slot through the IP network.
  • the relay station sending the voice data through a relay time slot includes:
  • the relay station sends the voice data sent by the local terminal through an IP network, and sends the voice data sent by the remote terminal through the relay time slot.
  • the relay station sending the voice data through a relay time slot includes:
  • the relay station sends the voice data sent by the local terminal through the IP network, and sends the voice data sent by the local terminal and the remote terminal through the relay time slot.
  • the relay station sending the voice data through a relay time slot includes:
  • the relay station sends the voice data by combining relay time slots.
  • the relay station sending the voice data through a relay time slot includes:
  • the relay station respectively sends the voice data through independent relay time slots.
  • Optional also includes:
  • the communication terminal and the relay station receive control commands sent by the control center.
  • the present invention also provides a multi-channel full-duplex communication system, including:
  • the communication terminal is used to select a communication time slot according to a time slot allocation strategy and send voice data through the communication time slot;
  • the relay station is configured to receive the voice data sent by each communication terminal through the corresponding communication slot and send the voice data through the relay slot.
  • Optional also includes:
  • the control center is used to issue control commands to the communication terminal and the relay station.
  • the multi-channel full-duplex communication method provided by the present invention includes: a communication terminal selects a communication time slot according to a time slot allocation strategy and sends voice data through the communication time slot; a relay station receives each of the communication terminals through a corresponding The voice data sent in the communication time slot; the relay station sends the voice data through the relay time slot. It can be seen that the multi-channel full-duplex communication method provided by the present invention allocates communication time slots for communication terminals, so that each communication terminal can simultaneously send voice data through the corresponding communication time slots to realize multi-party conversation; Following the time slot, the relay station is used to forward voice data through the relay time slot to achieve a wider wireless network coverage.
  • FIG. 1 is a schematic flowchart of a multi-channel full-duplex communication method provided by an embodiment of the present invention
  • FIG. 2 is a schematic diagram of a multi-channel full-duplex communication system provided by an embodiment of the present invention.
  • the core of the present invention is to provide a multi-channel full-duplex communication method and system that supports one-to-one calls and multi-party calls, realizes simultaneous listening by multiple people, and can realize wireless network coverage in a larger geographic area.
  • FIG. 1 is a schematic flowchart of a multi-channel full-duplex communication method according to an embodiment of the present invention. Referring to FIG. 1, the method includes:
  • the communication terminal selects a communication slot according to the slot allocation strategy and sends voice data through the communication slot
  • the system allocates one or more communication time slots to each communication terminal.
  • the communication terminal needs to send voice, it first selects its corresponding communication time slot according to the time slot allocation strategy and sends voice data through this communication time slot .
  • Different communication terminals can simultaneously transmit voice data through different communication time slots.
  • the number of communication time slots is determined according to the transmission bandwidth and the number of communication terminals actually allowed to talk at the same time.
  • the time slot allocation strategy may specifically be an ID corresponding strategy or a time slot competition strategy. Under the ID correspondence strategy, each communication terminal selects its own communication slot by one-to-one correspondence between the communication terminal ID and the slot number. Under the slot competition strategy, each communication terminal shares a communication slot, and there is no one-to-one correspondence between the communication slot and the communication terminal. The communication terminal that preempts the communication slot obtains the right to use the communication slot.
  • the length of voice data sent by the communication terminal in one communication slot is N times the length of the communication slot, and N is equal to the number of slots.
  • the relay station receives the voice data sent by each communication terminal through the corresponding communication time slot;
  • the relay station sends voice data through the relay time slot.
  • the system allocates the relay station a relay time slot for use only by the relay station.
  • the relay station receives the voice data sent by each communication terminal through the corresponding communication time slot, it can further use the relay time slot to The voice data is sent out, so that each communication terminal can receive the voice data sent by each communication terminal, realize multi-party conversation, and realize the wireless network coverage of a larger geographical area.
  • the multi-channel full-duplex communication method allocates communication time slots for communication terminals, so that each communication terminal can simultaneously send voice data through the corresponding communication time slots to realize multi-party conversation; it is a relay
  • the station allocates relay time slots, so that the relay station is used to forward voice data through the relay time slots to achieve a wider wireless network coverage.
  • This embodiment aims to implement local relay. Specifically, the relay station receives the voice data sent by the local communication terminal, that is, the communication terminal in the current channel, through the corresponding communication slot, and then sends out the received voice data through the relay slot. Because each communication terminal receives the voice data forwarded by the relay station, the voice data received by each communication terminal that sends the voice data includes the voice data sent by itself, that is, there is an echo. In order to eliminate the echo, the communication terminal can record the voice data sent by itself in the mode of sending voice data and receiving voice data, and then first record the recorded voice data before playing the received voice data forwarded by the relay station Compare with the received voice data, remove the recorded voice data from the received voice data, that is, the voice data sent by yourself.
  • the system has a control center: further, if the control center also has the relay function, it is not necessary to set up a relay station at this time, but use the control center to perform the relevant operations of the relay station. At this time, the control center occupies both system time slots and relay time slots. If the control center does not have the relay function, the control control center occupies the system time slot, and the relay station occupies the relay time slot. In addition, if the control center does not have a wireless transceiver function, the relay station occupies both the system time slot and the relay time slot, and the control center can establish a connection with the relay station through the IP network to obtain the right to use the system time slot.
  • the newly added communication terminal when a new communication terminal joins the system, the newly added communication terminal first synchronizes with the control center or relay station, and if the control center or relay station is not turned on, it communicates with the sending state
  • the terminals are synchronized, and each communication terminal enters the off-line through mode, that is, no relay station is required to forward voice data, and each communication terminal directly receives voice data sent by other communication terminals through their corresponding communication time slots.
  • the control center or the relay station if the control center or the relay station is turned on, the newly added communication terminal synchronizes with the control center or the relay station.
  • the relay station can receive the voice data sent by each communication terminal and the control center, and send the voice data through the relay time slot.
  • the relay station there is no control center in the system: except for the relay slot occupied by the relay station, the others are communication slots for the communication terminal.
  • a new communication terminal joins the system, it first synchronizes with the relay station. If the relay station is not turned on, it synchronizes with the communication terminal in the sending state, and each communication terminal enters the offline mode. If the relay station is turned on, the newly added communication terminal synchronizes with the relay station. When the relay station receives the voice data sent by each communication terminal through the corresponding communication time slot, it is further forwarded through the relay time slot.
  • the way for the relay station to send voice data through the relay time slot can be to send the voice data through the combined relay time slot, that is, the relay station forwards the voice data of multiple communication terminals through a combined relay time slot; or
  • the independent relay time slot corresponds to sending voice data, that is, the relay station corresponds to each voice data through multiple independent relay time slots.
  • the above-mentioned relay station sending voice data through the relay time slots includes: the relay station sending voice data through combining the relay time slots.
  • the system allocates a combined relay time slot for the relay station.
  • the relay station receives the voice data sent by each communication terminal, it first mixes the voice data from different communication terminals, and then sends out the mixed voice data by combining the relay time slots.
  • Each communication terminal only Receive the voice data sent by the relay station and play it.
  • time slot 0 can be assigned as the system time slot for the control center; time slots 1 to 8 are communication time slots for communication terminals; time slot 10
  • the communication terminal can select its corresponding communication time slot from time slots 1 to 8 to send voice data, and the relay station receives the voice data sent by each communication terminal, and mixes the voice data and mixes the processed voice Data is sent through time slot 10.
  • the control center can also receive and play the voice data sent by each communication terminal.
  • the above-mentioned relay station sending voice data through the relay time slot includes: the relay station correspondingly sends voice data through each independent relay time slot.
  • the system allocates multiple independent relay time slots to the relay station, wherein the number of independent relay time slots is equal to the number of communication time slots allocated by the system to communication terminals, and each is independent
  • the relay time slots correspond to each communication time slot one by one, so that each voice data received and transmitted is respectively transmitted through each independent relay time slot.
  • time slots 1 to 4 can be allocated as communication time slots
  • time slots 5 to 8 are independent relay time slots, so that each communication terminal can In the time slots 1 to 4, select the corresponding communication time slot to send voice data.
  • the relay station After receiving the voice data sent through each communication slot, the relay station forwards the voice data through the corresponding independent relay slot.
  • each communication terminal can also receive voice data forwarded by relay stations through independent relay time slots. And because the relay station forwards the voice data through independent relay time slots, the voice data is not mixed, so some communication terminals can receive two copies of the same voice data from the same communication terminal, and You can select any valid voice data from the two voice data, and after removing the voice data sent by yourself, mix each voice data and play it.
  • This embodiment is not only easy to eliminate echo, but also because two voice data can be received at the same time, it is possible to effectively achieve merge gain and enhance anti-interference ability.
  • This embodiment is intended to implement networking relay and voice data sent by a local communication terminal is not relayed.
  • multiple relay stations are installed in the system, and each relay station is connected through an IP network.
  • one of the relay stations receives the voice data sent by the communication terminal in this channel, it can forward each voice data to other relay stations through the IP network, so that other relay stations can further forward the voice data to other channels
  • the communication terminal realizes the transmission and reception of voice data of communication terminals of different channels, further expanding the coverage of the wireless network.
  • the relay station after receiving the voice data sent by the communication terminal in this channel, the relay station no longer forwards it to the communication terminal in this channel, but when it receives the voice sent by the communication terminal of other channel sent by other relay station through the IP network After the data, the voice data sent by the communication terminal of the other channel is forwarded.
  • Each communication terminal receives voice data transmitted in all time slots including the relay station.
  • the system has a control center and the control center does not exist:
  • the control center When there is a control center in the system, the control center is connected to each relay station through the IP network, and each communication terminal and relay station are controlled by the control center.
  • the control center can send control commands, network data, voice data, etc. through the system time slot.
  • the system time slot at this time is a dedicated time slot for the relay station to forward the control commands of the control center, that is, although this system time slot is used by the relay station, it is not used to forward the communication data sent by the communication terminal.
  • the number of system time slots can be one or multiple, in addition to downlink voice time slots, there can also be downlink data time slots and uplink shared data time slots.
  • the control commands sent by the control center can be sent individually or can be transferred together with voice data. In this way, if the system shares N+1 time slots, N communication terminals can be allowed to talk with one control center at the same time.
  • the relay station When there is no control center in the system, the relay station does not have a dedicated relay time slot.
  • the relay station receives the voice data sent by other relay stations through the IP network, it is forwarded through the corresponding communication time slot of this channel.
  • the system has 8 communication slots, of which communication slots 1, 2, 4, and 5 are used by communication terminals in this channel, and communication slots 3, 6, 7, and 8 are used by communication terminals of other channels.
  • the relay station of this channel forwards it through any available communication time slot of communication slots 1, 2, 4, and 5.
  • Each communication terminal in this channel receives voice data sent from all communication time slots including the relay station, and mixes and reproduces the voice data.
  • any communication terminal after any communication terminal joins the system, it first synchronizes with other communication terminals or relay stations according to the frame synchronization algorithm, including that the relay station itself also performs frame synchronization. And if the system shares N time slots, N communication terminals can be allowed to speak at the same time.
  • This embodiment is intended to implement network relay and voice data relay sent by a local communication terminal. Specifically, each relay station forwards voice data through the IP network. When one of the relay stations receives the voice data sent by the communication terminal in this channel, it forwards the voice data sent by the communication terminal in this channel to other relay stations through the IP network, and receives the forwarded data from other relay stations. The voice data, and then the voice data sent by each communication terminal in this channel and the voice data forwarded by other relay stations are sent out through the relay time slot.
  • control center of the system specifically includes the following implementation manners:
  • the relay station forwards voice data by combining relay time slots.
  • the relay station occupies a combined relay time slot.
  • the relay station receives the voice data sent by each communication terminal in this channel, it first mixes the voice data, and then mixes through the IP network. The processed voice data is sent to other relay stations. And through the IP network, the voice data sent by other relay stations through the IP network is received, and then the voice data sent by each communication terminal in this channel and the voice data sent by other relay stations are mixed, and then the relay time slots are combined. After being sent out, all communication terminals only receive the voice data sent by the relay station. In this way, if the system has M+1 time slots, M*Q communication terminals can be allowed to send voice data at the same time, Q is the number of relay stations.
  • the relay station forwards voice data by combining relay time slots.
  • the relay station occupies a combined relay time slot, and the control center that realizes the central control role is connected to each relay station through the IP network, and all communication terminals and relay stations are controlled by the control center.
  • the relay station can forward control commands, network data, voice data, etc. sent by the control center through the system time slot.
  • Each communication terminal receives only the voice data forwarded by the relay station.
  • the relay station forwards voice data through independent relay time slots. Specifically, the relay station occupies multiple independent relay time slots.
  • each voice data is independently sent to other relays through the IP network. station. And the voice data sent by each communication terminal in this channel and the voice data sent by other relay stations are sent out through the corresponding independent relay time slots.
  • the voice data sent by the communication terminal in this channel received by the relay station collides with the received voice data sent by other relay stations, for example, the voice data forwarded by other relay stations is communication slot 3
  • the communication terminal in this channel also transmits voice data through communication slot 3, while the relay station only occupies an independent relay slot that is responsible for forwarding the voice data sent in communication slot 3.
  • the relay station can preferentially forward the voice data forwarded by other relay stations through the IP network, and then forward the voice data sent by the communication terminal in this channel.
  • each communication terminal in this channel will stop sending voice data in communication slot 3 until the collision is resolved.
  • each communication terminal can also receive the voice data forwarded by the relay station through the corresponding independent relay time slot, so that some communication terminals will receive two copies of the same The voice data from the same communication terminal, and then the communication terminal selects any valid voice data from the two voice data, and after removing its own voice data, performs mixing and playback. In this way, if the system has N*2 time slots, N communication terminals can be allowed to speak at the same time.
  • the relay station forwards voice data through independent relay time slots.
  • the relay station occupies multiple independent relay time slots, and the control center is connected to each relay station through an IP network, and all communication terminals and relay stations are controlled by the control center.
  • the relay station receives the voice data sent by each communication terminal in this channel, each voice data is independently sent to other relay stations through the IP network.
  • the voice data sent by each communication terminal in this channel and the voice data sent by other relay stations are sent out through the corresponding independent relay time slots.
  • the voice data sent by the communication terminal in this channel received by the relay station conflicts with the received voice data sent by other relay stations, the voice data forwarded by other relay stations through the IP network can be preferentially forwarded.
  • each communication terminal in this channel will stop sending voice data in the conflicting communication slot until the collision is resolved.
  • each communication terminal can also receive the voice data forwarded by the relay station through the corresponding independent relay time slot, so that some communication terminals will receive two copies of the same The voice data from the same communication terminal, and then the communication terminal selects any valid voice data from the two voice data, and after removing its own voice data, performs mixing and playback. In this way, if the system has N*2+1 time slots, N communication terminals can be allowed to speak with one control center at the same time.
  • the present invention also provides a multi-channel full-duplex communication system.
  • the system described below can be referenced correspondingly to the method described above; please refer to FIG. 2, which is a multi-channel A schematic diagram of a duplex communication system, combined with FIG. 2, the system includes:
  • the communication terminal 10 is used to select a communication slot according to a slot allocation strategy and send voice data through the communication slot;
  • the relay station 20 is configured to receive voice data sent by each communication terminal through the corresponding communication slot and transmit voice data through the relay slot.
  • the control center is used to issue control commands to the communication terminal 10 and the relay station 20.

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Abstract

一种多路全双工通信方法及系统，该方法包括通信终端根据时隙分配策略选定通信时隙并通过所述通信时隙发送语音数据；中继台接收各所述通信终端通过对应的所述通信时隙发送的所述语音数据；所述中继台通过中继时隙发送所述语音数据。该多路全双工通信方法支持一对一通话、多方通话，可有效实现多方同时听说，且在中继台的支持下，可以实现更大地域范围的无线网络覆盖。

Description

一种多路无线全双工通信方法及系统
本申请要求于2019年01月04日提交至中国专利局、申请号为201910007774.X、发明名称为“一种多路无线全双工通信方法及系统”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本发明涉及通信技术领域，特别涉及一种多路无线全双工通信方法；还涉及一种多路无线全双工通信系统。
背景技术
对讲机是一种无线且可进行一点对多点通信的通信终端设备，能够使多人同时收听同一个人的说话内容。具有及时沟通、一呼百应、经济实用、运营成本低、不耗费通信费用等特点，同时还具有组呼通播、系统呼叫、机密呼叫等功能。当处理紧急突发事件时，在进行调度指挥中其作用是其他通讯工具所不能替代的。现有调频对讲机以及数字对讲机均在同一时刻仅允许一个人说话，其他人接听。已无法满足同时进行多方通话的迫切需求。虽然，目前已有多种支持全双工通信的方案，但是，各方案各有缺陷，如，使用模拟或数字对讲机技术的往往仅支持一对一通信；采用蓝牙、WIFI、2.4G模块的由于无法在无线系统层面专门为全双工通信来优化设计，从而造成使用距离、网络覆盖等问题。
有鉴于此，如何提供一种多路全双工通信方案，解决上述技术缺陷是本领域技术人员亟待解决的技术问题。
发明内容
本发明的目的是提供一种多路全双工通信方法及系统，支持一对一通话、多方通话，实现多人同时听说，且可实现更大地域范围的无线网络覆盖。
为解决上述技术问题，本发明提供了一种多路全双工通信方法，包括：
通信终端根据时隙分配策略选定通信时隙并通过所述通信时隙发送语音数据；
中继台接收各所述通信终端通过对应的所述通信时隙发送的所述语音数据；
中继台通过中继时隙发送所述语音数据。
可选的，所述中继台接收各所述通信终端通过对应的所述通信时隙发送的所述语音数据，包括：
所述中继台接收本地通信终端通过对应的所述通信时隙发送的所述语音数据。
可选的，所述中继台接收各所述通信终端通过对应的所述通信时隙发送的所述语音数据，包括：
所述中继台接收本地通信终端通过对应的所述通信时隙发送的所述语音数据以及通过IP网络接收远程通信终端通过对应的所述通信时隙发送的所述语音数据。
可选的，所述中继台通过中继时隙发送所述语音数据，包括：
所述中继台通过IP网络发送所述本地终端发送的所述语音数据，通过所述中继时隙发送所述远程终端发送的所述语音数据。
可选的，所述中继台通过中继时隙发送所述语音数据，包括：
所述中继台通过所述IP网络发送所述本地终端发送的所述语音数据，通过所述中继时隙发送所述本地终端及所述远程终端发送的所述语音数据。
可选的，所述中继台通过中继时隙发送所述语音数据，包括：
所述中继台通过合并中继时隙发送所述语音数据。
可选的，所述中继台通过中继时隙发送所述语音数据，包括：
所述中继台通过各独立中继时隙分别对应发送所述语音数据。
可选的，还包括：
所述通信终端及所述中继台接收控制中心发送的控制指令。
为解决上述技术问题，本发明还提供了一种多路全双工通信系统，包括：
通信终端，用于根据时隙分配策略选定通信时隙并通过所述通信时隙发送语音数据；
中继台，用于接收各所述通信终端通过对应的所述通信时隙发送的所 述语音数据并通过中继时隙发送所述语音数据。
可选的，还包括：
控制中心，用于下发控制指令至所述通信终端与所述中继台。
本发明所提供的多路全双工通信方法，包括：通信终端根据时隙分配策略选定通信时隙并通过所述通信时隙发送语音数据；中继台接收各所述通信终端通过对应的所述通信时隙发送的所述语音数据；中继台通过中继时隙发送所述语音数据。可见，本发明所提供的多路全双工通信方法，为通信终端分配通信时隙，以使各通信终端通过对应的通信时隙能够同时发送语音数据，实现多方通话；为中继台分配中继时隙，从而利用中继台通过中继时隙进行语音数据转发，实现更大范围的无线网络覆盖范围。
附图说明
为了更清楚地说明本发明实施例中的技术方案，下面将对现有技术和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发明的一些实施例，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为本发明实施例所提供的一种多路全双工通信方法的流程示意图；
图2为本发明实施例所提供的一种多路全双工通信系统的意图。
具体实施方式
本发明的核心是提供一种多路全双工通信方法及系统，支持一对一通话、多方通话，实现多人同时听说，且可实现更大地域范围的无线网络覆盖。
为使本发明实施例的目的、技术方案和优点更加清楚，下面将结合本发明实施例中的附图，对本发明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发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
实施例一
请参考图1，图1为本发明实施例所提供的一种多路全双工通信方法的流程示意图；参考图1，该方法包括：
S100：通信终端根据时隙分配策略选定通信时隙并通过通信时隙发送语音数据
具体的，系统为各通信终端分配有一个或多个通信时隙，当通信终端需要发送语音时，首先根据时隙分配策略选定自身对应的通信时隙，并通过此通信时隙发送语音数据，不同通信终端可通过不同的通信时隙同时实现语音数据发送。其中，通信时隙的个数根据传输带宽以及实际允许同时说话的通信终端的数量确定。另外，时隙分配策略可以具体为ID对应策略或时隙竞争策略。在ID对应策略下，各通信终端通过将通信终端ID与时隙编号一一对应而选定自身的通信时隙。在时隙竞争策略下，各通信终端共享通信时隙，通信时隙与通信终端不设一一对应关系，抢先占用通信时隙的通信终端获得此通信时隙的使用权。
进一步，为保障各通信终端可以听到持续的语音流，通信终端在1个通信时隙内发送的语音数据的长度是通信时隙长度的N倍，N等于时隙个数。
S200：中继台接收各通信终端通过对应的通信时隙发送的语音数据；
S300：中继台通过中继时隙发送语音数据。
具体的，系统为中继台分配有仅供中继台使用的中继时隙，当中继台接收到各通信终端通过对应的通信时隙发送的语音数据后，进一步可通过中继时隙将语音数据发送出去，使每个通信终端均可接收各通信终端发送的语音数据，实现多方通话，并实现更大地域范围的无线网络覆盖。
综上所述，本发明所提供的多路全双工通信方法，为通信终端分配通信时隙，以使各通信终端通过对应的通信时隙能够同时发送语音数据，实现多方通话；为中继台分配中继时隙，从而利用中继台通过中继时隙进行语音数据转发，实现更大范围的无线网络覆盖范围。
实施例二
本实施例旨在实现本地中继。具体而言，中继台接收本地通信终端即本频道内的通信终端通过对应的通信时隙发送的语音数据，进而通过中继 时隙将接收到的各语音数据发送出去。由于各通信终端均接收中继台转发的语音数据，故各发送语音数据的通信终端接收到的语音数据中包含有自身发送的语音数据，即存在回音。从而为剔除回音，通信终端在既发送语音数据又接收语音数据的模式下，可将自身发送的语音数据录音，进而在播放接收到的中继台转发的语音数据前，首先将录音的语音数据与接收的语音数据进行比对，从接收的语音数据中剔除录音的语音数据即自身发送的语音数据。
针对中继台进行本地转发的上述实施例，进一步，还包括系统存在控制中心与不存在控制中心两种实施方式：
对于前者，系统有控制中心：进一步，若控制中心兼具中继功能，此时可以不单独设置中继台，而利用控制中心进行中继台的相关操作。此时，控制中心同时占用系统时隙与中继时隙。若控制中心不具有中继功能，则控制控制中心占用系统时隙，中继台占用中继时隙。此外，若控制中心不具备无线收发功能，则中继台同时占用系统时隙与中继时隙，控制中心可通过IP网络与中继台建立连接，从而获得系统时隙的使用权。
在此实施方式下，当有新的通信终端加入系统时，该新加入的通信终端首先与控制中心或中继台进行同步，若控制中心或中继台没有开机，则与处于发送状态的通信终端进行同步，且各通信终端进入脱网直通模式，即不需中继台进行语音数据转发，各通信终端直接接收其他通信终端通过各自对应的通信时隙发送的语音数据。相反，若控制中心或中继台开机，则新加入的通信终端与控制中心或中继台进行同步。中继台可接收各通信终端以及控制中心发送的语音数据，并将语音数据通过中继时隙发送出去。
对于后者，系统不存在控制中心：除中继台占用的中继时隙外，其他均为通信时隙，供通信终端使用。当有新的通信终端加入系统时，首先与中继台进行同步，若中继台没有开机，则与处于发送状态的通信终端进行同步，且各通信终端进入脱网直通模式。若中继台开机，则新加入的通信终端与中继台进行同步。当中继台接收到各通信终端通过对应的通信时隙发送的语音数据后进一步通过中继时隙转发出去。
进一步，中继台通过中继时隙发送语音数据的方式可以为通过合并中继时隙发送语音数据，即中继台通过一个合并中继时隙转发多个通信终端 的语音数据；或者为通过独立中继时隙对应发送语音数据，即中继台通过多个独立中继时隙对应各语音数据。
为减少时隙浪费，提高无线带宽利用效率，在一种具体的实施方式中，上述中继台通过中继时隙发送语音数据包括：中继台通过合并中继时隙发送语音数据。
具体的，本实施例中，系统为中继台分配一个合并中继时隙。当中继台接收到各通信终端发送的语音数据后，首先对来自不同通信终端的语音数据进行混音处理，进而通过合并中继时隙将混音处理后的语音数据发送出去，各通信终端仅接收中继台发送的语音数据，并进行播放。以系统设置有控制中心且时隙个数为10个为例，可分配时隙0为系统时隙，供控制中心使用；时隙1至8为通信时隙，供通信终端使用；时隙10为合并中继时隙，供中继台使用。通信终端可从时隙1至8中选定自身对应的通信时隙发送语音数据，中继台接收各通信终端发送的语音数据，并对语音数据进行混音处理后将混音处理后的语音数据通过时隙10发送。除各通信终端可以接收到语音数据外，控制中心同样也可以接收到各通信终端发送的语音数据并进行播放。
为便于进行回音剔除，在一种具体的实施方式中，上述中继台通过中继时隙发送语音数据包括：中继台通过各独立中继时隙分别对应发送语音数据。
具体的，本实施例中，系统为中继台分配多个独立中继时隙，其中，独立中继时隙的个数与系统为通信终端分配的通信时隙的个数相等，且各独立中继时隙与各通信时隙一一对应，从而通过各独立中继时隙分别对应发送接收到的各语音数据。以系统不设置控制中心，且时隙个数为8个为例，可分配时隙1至4为通信时隙，时隙5至8为独立中继时隙，从而，各通信终端可从规定的时隙1至4中选定自身对应的通信时隙发送语音数据。中继台接收到经由各通信时隙发送的语音数据后，通过对应的独立中继时隙将语音数据转发出去，如，中继台接收到通信终端通过通信时隙1发送的语音数据后，可通过独立通信时隙5转发此语音数据，中继台接收到通信终端通过通信时隙2发送的语音数据后，可通过独立通信时隙6转发此语音数据，依此类推。各通信终端除可以接收其他通信终端通过对应 的通信时隙发送的语音数据外，还可以接收到中继台通过独立中继时隙转发的语音数据。且由于中继台通过独立中继时隙进行语音数据转发，故未对各语音数据进行混音处理，所以，部分通信终端可以接收到两份同样的来自于同一个通信终端的语音数据，进而可从两份语音数据中选择任一有效的语音数据，并在剔除自身发送的语音数据后，将各语音数据混音后播放。该实施方式，不仅易于剔除回声，且由于同时可收到两份语音数据，从而可有效实现合并增益，增强抗干扰能力。
实施例三
本实施例旨在实现组网中继且本地通信终端发送的语音数据不中继。具体而言，系统内设置多个中继台，各中继台通过IP网络相连。当其中一个中继台接收到本频道内的通信终端发送的语音数据后，可通过IP网络将各语音数据转发给其他中继台，以使其他中继台将该语音数据进一步转发给其他频道的通信终端，实现不同频道的通信终端的语音数据收发，进一步扩大无线网络覆盖范围。此外，中继台接收到本频道内的通信终端发送的语音数据后，不再向本频道内的通信终端转发，而当接收到其他中继台通过IP网络发送的其他频道的通信终端发送语音数据后，对此其他频道的通信终端发送的语音数据进行转发。各通信终端接收包括中继台在内的所有时隙发送的语音数据。
针对本实施例，进一步还包括系统存在控制中心与不存在控制中心两种实施方式：
当系统存在控制中心时，控制中心通过IP网络与各中继台相连，各通信终端以及中继台均接受控制中心的控制。控制中心能够通过系统时隙发送控制命令、网络数据、语音数据等。其中，此时的系统时隙为供中继台转发控制中心的控制命令等的专用时隙，即此系统时隙虽然供中继台使用，但不用于转发通信终端发送的通信数据。其中，系统时隙的个数可以为一个，也可以为多个，除下行的语音时隙外、还可以同时有下行的数据时隙、上行共享的数据时隙。控制中心发送的控制命令可以单独发送也可以与语音数据一起复合传递。在此方式下，若系统共有N+1个时隙，则能够允许N个通信终端与1个控制中心同时说话。
当系统不存在控制中心时，中继台没有专用的中继时隙，当中继台接收到其他中继台通过IP网络发送的语音数据后，通过本频道对应的通信时隙进行转发。例如，系统有8个通信时隙，其中，通信时隙1、2、4、5供本频道内的通信终端使用，通信时隙3、6、7、8供其他频道的通信终端使用，当本频道的中继台接收到其他中继台发送的语音数据后，通过通信时隙1、2、4、5中的任一可用通信时隙进行转发。本频道内的各通信终端接收包括中继台在内的所有通信时隙发送的语音数据，并将各语音数据进行混音后播放。在此实施方式下，任何通信终端加入系统后，均首先按照帧同步算法与其他通信终端或中继台进行同步，包括中继台自身也进行帧同步。且若系统共有N个时隙，则能够允许N个通信终端同时说话。
实施例四
本实施例旨在实现组网中继且本地通信终端发送的语音数据中继。具体而言，各中继台间通过IP网络进行语音数据转发。当其中一个中继台接收到本频道内的通信终端发送的语音数据后，将本频道内的通信终端发送的语音数据通过IP网络转发至其他中继台，并接收其他的中继台转发的语音数据，进而将本频道内的各通信终端发送的语音数据以及其他中继台转发的语音数据通过中继时隙发送出去。
进一步，针对上述实施例，根据中继模式以及系统有无控制中心具体包含以下几种实施方式：
系统中没有控制中心且中继台通过合并中继时隙转发语音数据。具体而言，中继台占用一个合并中继时隙，当中继台接收到本频道内的各通信终端发送的语音数据后，首先对各语音数据进行混音处理，进而通过IP网络将混音处理后的语音数据发送至其他中继台。并通过IP网络接收其他中继台通过IP网络发送的语音数据，进而将本频道内各通信终端发送的语音数据与其他中继台发送的语音数据进行混音处理后，通过合并中继时隙发送出去，所有通信终端仅接收中继台发送的语音数据。在此方式下，若系统有M+1个时隙，则可以允许M*Q个通信终端同时发送语音数据，Q为中继台的数量。
系统中有控制中心且中继台通过合并中继时隙转发语音数据。具体而 言，中继台占用一个合并中继时隙，实现中央控制作用的控制中心通过IP网络与各中继台相连，所有通信终端与中继台均接受控制中心的控制。中继台可通过系统时隙转发控制中心发送的控制命令、网络数据、语音数据等。各通信终端仅接收中继台转发的语音数据。
系统中没有控制中心且中继台通过独立中继时隙转发语音数据。具体而言，中继台占用多个独立中继时隙，当中继台接收到本频道内的各通信终端发送的语音数据后，通过IP网络将每一份语音数据独立的发送至其他中继台。并且本频道内的各通信终端发送的语音数据以及其他中继台发送的语音数据均通过对应的独立中继时隙发送出去。其中，当中继台接收到的本频道内的通信终端发送的语音数据与接收到的其他中继台发送的语音数据发生冲突时，例如，其他中继台转发的语音数据为3号通信时隙发送的语音数据，本频道内的通信终端也通过3号通信时隙发送语音数据，而中继台仅占有1个负责转发3号通信时隙发送的语音数据的独立中继时隙，故此时，中继台可优先转发其他中继台通过IP网络转发的语音数据，之后再转发本频道内的通信终端发送的语音数据。另外，本频道内的各通信终端在检测到冲突后，将停止在3号通信时隙发送语音数据，直至冲突解除。各通信终端除可以接收其他通信终端通过对应的通信时隙发送的语音数据外，还可以接收中继台通过对应的独立中继时隙转发的语音数据，从而部分通信终端将接收到两份同样的来自于同一个通信终端的语音数据，进而通信终端从两份语音数据中选择任一有效的语音数据，并将自身的语音数据剔除后，进行混音处理后播放。在此方式下，若系统有N*2个时隙，则能够允许N个通信终端同时说话。
系统中有控制中心且中继台通过独立中继时隙转发语音数据。具体而言，中继台占用多个独立中继时隙，且控制中心通过IP网络与各中继台相连，所有通信终端与中继台均接受控制中心的控制。当中继台接收到本频道内的各通信终端发送的语音数据后，通过IP网络将每一份语音数据独立的发送至其他中继台。并且本频道内的各通信终端发送的语音数据以及其他中继台发送的语音数据均通过对应的独立中继时隙发送出去。其中，当中继台接收到的本频道内的通信终端发送的语音数据与接收到的其他中继台发送的语音数据发生冲突时，可优先转发其他中继台通过IP网络转发的 语音数据，之后再转发本频道内的通信终端发送的语音数据。另外，本频道内的各通信终端在检测到冲突后，将停止在存在冲突的通信时隙发送语音数据，直至冲突解除。各通信终端除可以接收其他通信终端通过对应的通信时隙发送的语音数据外，还可以接收中继台通过对应的独立中继时隙转发的语音数据，从而部分通信终端将接收到两份同样的来自于同一个通信终端的语音数据，进而通信终端从两份语音数据中选择任一有效的语音数据，并将自身的语音数据剔除后，进行混音处理后播放。在此方式下，若系统有N*2+1个时隙，则能够允许N个通信终端与1个控制中心同时说话。
本发明还提供了一种多路全双工通信系统，以下描述的该系统可以与上文描述的方法对应参照；请参考图2，图2为本发明实施例所提供的一种多路全双工通信系统的示意图，结合图2，该系统包括：
通信终端10，用于根据时隙分配策略选定通信时隙并通过通信时隙发送语音数据；
中继台20，用于接收各通信终端通过对应的通信时隙发送的语音数据并通过中继时隙发送语音数据。
在上述实施例的基础上，可选的，还包括：
控制中心，用于下发控制指令至通信终端10与中继台20。
对于本发明所提供的多路全双工通信系统参照上述方法实例即可，本发明在此不做赘述。
因为情况复杂，无法一一列举进行阐述，本领域技术人员应能意识到，在本申请提供的实施例的基本原理下结合实际情况可以存在多个例子，在不付出足够的创造性劳动下，应均在本申请的范围内。
说明书中各个实施例采用递进的方式描述，每个实施例重点说明的都是与其他实施例的不同之处，各个实施例之间相同相似部分互相参见即可。
以上对本申请所提供的多路全双工通信方法及系统进行了详细介绍。本文中应用了具体个例对本申请的原理及实施方式进行了阐述，以上实施例的说明只是用于帮助理解本申请的方法及其核心思想。应当指出，对于 本技术领域的普通技术人员来说，在不脱离本申请原理的前提下，还可以对本申请进行若干改进和修饰，这些改进和修饰也落入本申请权利要求的保护范围。

Claims (10)

  1. 一种多路全双工通信方法，其特征在于，包括：
    通信终端根据时隙分配策略选定通信时隙并通过所述通信时隙发送语音数据；
    中继台接收各所述通信终端通过对应的所述通信时隙发送的所述语音数据；
    中继台通过中继时隙发送所述语音数据。
  2. 根据权利要求1所述的多路全双工通信方法，其特征在于，所述中继台接收各所述通信终端通过对应的所述通信时隙发送的所述语音数据，包括：
    所述中继台接收本地通信终端通过对应的所述通信时隙发送的所述语音数据。
  3. 根据权利要求1所述的多路全双工通信方法，其特征在于，所述中继台接收各所述通信终端通过对应的所述通信时隙发送的所述语音数据，包括：
    所述中继台接收本地通信终端通过对应的所述通信时隙发送的所述语音数据以及通过IP网络接收远程通信终端通过对应的所述通信时隙发送的所述语音数据。
  4. 根据权利要求3所述的多路全双工通信方法，其特征在于，所述中继台通过中继时隙发送所述语音数据，包括：
    所述中继台通过IP网络发送所述本地终端发送的所述语音数据，通过所述中继时隙发送所述远程终端发送的所述语音数据。
  5. 根据权利要求3所述的多路全双工通信方法，其特征在于，所述中继台通过中继时隙发送所述语音数据，包括：
    所述中继台通过所述IP网络发送所述本地终端发送的所述语音数据，通过所述中继时隙发送所述本地终端及所述远程终端发送的所述语音数据。
  6. 根据权利要求1所述的多路全双工通信方法，其特征在于，所述中继台通过中继时隙发送所述语音数据，包括：
    所述中继台通过合并中继时隙发送所述语音数据。
  7. 根据权利要求1所述的多路全双工通信方法，其特征在于，所述中继台通过中继时隙发送所述语音数据，包括：
    所述中继台通过各独立中继时隙分别对应发送所述语音数据。
  8. 根据权利要求1所述的多路全双工通信方法，其特征在于，还包括：
    所述通信终端及所述中继台接收控制中心发送的控制指令。
  9. 一种多路全双工通信系统，其特征在于，包括：
    通信终端，用于根据时隙分配策略选定通信时隙并通过所述通信时隙发送语音数据；
    中继台，用于接收各所述通信终端通过对应的所述通信时隙发送的所述语音数据并通过中继时隙发送所述语音数据。
  10. 根据权利要求6所述的多路全双工通信系统，其特征在于，还包括：
    控制中心，用于下发控制指令至所述通信终端与所述中继台。
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