WO2017036327A1 - 一种随机接入中继器、中继***及其中继方法 - Google Patents

一种随机接入中继器、中继***及其中继方法 Download PDF

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Publication number
WO2017036327A1
WO2017036327A1 PCT/CN2016/096477 CN2016096477W WO2017036327A1 WO 2017036327 A1 WO2017036327 A1 WO 2017036327A1 CN 2016096477 W CN2016096477 W CN 2016096477W WO 2017036327 A1 WO2017036327 A1 WO 2017036327A1
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Prior art keywords
repeater
random access
terminal
base station
broadcast
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PCT/CN2016/096477
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English (en)
French (fr)
Inventor
李卓群
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厦门纵行信息科技有限公司
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Application filed by 厦门纵行信息科技有限公司 filed Critical 厦门纵行信息科技有限公司
Priority to JP2017566306A priority Critical patent/JP6675422B2/ja
Priority to GB1804967.6A priority patent/GB2556844B/en
Publication of WO2017036327A1 publication Critical patent/WO2017036327A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0225—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0203—Power saving arrangements in the radio access network or backbone network of wireless communication networks
    • H04W52/0206—Power saving arrangements in the radio access network or backbone network of wireless communication networks in access points, e.g. base stations
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements
    • H04W56/001—Synchronization between nodes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0833—Random access procedures, e.g. with 4-step access
    • 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 application relates to the field of communications, and in particular, to a low power random access repeater, a relay system, and a relay method thereof.
  • the Internet of Things typically forwards packets through repeaters to extend network coverage.
  • the forwarding of each message transmission per one repeater is called "one hop”.
  • traditional repeaters have many limitations in practical applications.
  • the conventional repeater in order to maintain the connection with the downstream node, the conventional repeater always maintains a high power consumption receiving state.
  • the repeater In practical applications, the repeater must be powered by the battery due to the limitation of the implementation environment.
  • the repeater that has been in the receiving state is powered by a battery, the power is quickly exhausted, resulting in a greatly shortened life span of the entire network, and the maintenance cost is greatly increased.
  • the existing design allows the repeater to allocate a time slot for each downstream node that has a message forwarding requirement.
  • the repeater operates in a high-power receiving state in these allocated time slots and sleeps at other times.
  • the packet forwarding requirements of some downstream nodes are triggered by events, which is difficult to predict in advance. If the repeater reserves time slots for these downstream nodes, it will waste energy. When the number of downstream nodes is very For a long time, these reserved time slots will cause the repeater to have no sleep at all. However, if the repeater does not reserve time slots for these downstream nodes, when these nodes are triggered by specific events, and the packets are generated and sent to the relay for forwarding, the repeaters may be in a dormant state, and thus cannot be woken up in time. Receiving these packets that need to be forwarded, the communication stability of the entire network is greatly reduced.
  • the purpose of the present application is to overcome the deficiencies of the prior art and provide a hybrid network networking method for supporting coverage extension and large-scale networking of a low-rate wireless communication network through a wireless repeater.
  • the wireless relay does not need to schedule the communication of the terminal, and only needs to perform periodic sleep according to a certain rule.
  • a large number of terminals can adjust the transmission time of sending uplink packets (such as event trigger signals) according to the sleep period of the relay to ensure that the packets can be received and forwarded by the repeater, and finally can be received by the base station.
  • the relay is only used to receive and forward the packets of one or more of the terminals, and does not schedule or specify the time slot of the packet transmission time of the terminal.
  • a random access relay method comprising the steps of: the repeater sends a broadcast signal; the terminal receives the broadcast signal; the terminal sends a message to the repeater in a random access time window of the repeater; the repeater succeeds After receiving the packet and successfully forwarding it, send a confirmation message to the terminal.
  • the repeater determines its duty cycle and broadcast period in advance.
  • one duty cycle is composed of a sleep and random access time window, wherein the repeater is in a sleep or low power operation state during sleep, receives a message during a random access time window, and forwards the message.
  • one broadcast period consists of a transmit signal and an idle, wherein the repeater transmits a broadcast signal during transmission of the signal and does not transmit the broadcast signal during idle periods.
  • the working period of the repeater is determined by the repeater according to a certain rule, or according to a configuration instruction of the upstream base station.
  • the broadcast period of the repeater is determined by the repeater according to a certain rule, or according to a configuration instruction of the upstream base station.
  • the duty cycle and the broadcast cycle may have different cycle frequencies.
  • the broadcast signal carries synchronization information, and based on the synchronization information, the terminal can determine the start time of the next random access time window of the repeater.
  • the terminal further comprises: the terminal adjusting the clock of the terminal to synchronize with the time count of the repeater, and determining that the repeater ends the sleep according to a known duty cycle configuration of the repeater. Or a low-power operating state, and the moment of entering the random access time window.
  • the terminal selects a random access time window in the working period to send a message to the repeater according to the determined working period.
  • the repeater After the repeater successfully receives one or more messages, it immediately forwards to the upstream base station or another repeater.
  • the repeater After the repeater successfully receives one or more messages, it waits until the random access time window of the upstream base station or another repeater arrives.
  • the repeater After successfully receiving one or more packets, the repeater performs forwarding according to the time slot scheduling of the upstream base station or another repeater when a specified access time slot arrives.
  • the application also provides a random access repeater, including:
  • the wireless transceiver transmits a broadcast signal according to the determined broadcast period, receives the message from the terminal, and forwards the message;
  • the controller determines the wireless transceiver and its own duty cycle and broadcast period to control the reception and forwarding of the wireless transceiver within a random time window.
  • the repeater comprises at least two wireless transceivers; two or more wireless transceivers and their controllers directly forward messages through a wired data interface or a control signal interface, or indirectly through a controller Forward the message.
  • clock synchronization is performed between two or more wireless transceivers and their controllers through a clock signal interface or a control signal interface; the clock synchronization includes clock frequency synchronization or clock phase synchronization.
  • each wireless transceiver and its controller can be independent of other wireless transceivers and their controllers, and the wireless transceiver and its controller can also use the control signal interface to wake up other wireless transceivers through external control signals. And its controller.
  • one duty cycle consists of a sleep and random access time window, wherein the wireless transceiver and its controller are in a sleep or low power operating state during sleep, operating during a random access time window.
  • one broadcast period consists of a transmit signal and an idle, wherein the controller controls the wireless transceiver to transmit a broadcast signal during transmission of the signal and not to transmit the broadcast signal during idle periods.
  • the duty cycle is determined by the controller according to a certain rule, or according to a configuration instruction of the upstream base station.
  • the broadcast period is determined by the controller according to a certain rule, or according to a configuration instruction of the upstream base station.
  • the broadcast period is determined by the controller according to a certain rule, or according to a configuration instruction of the upstream base station.
  • the duty cycle and the broadcast cycle may have different cycle frequencies.
  • the broadcast signal carries synchronization information, and based on the synchronization information, the terminal can determine the start time of the next random access time window of the repeater.
  • the wireless transceiver After the wireless transceiver successfully receives one or more messages, it is immediately forwarded to the upstream base station or another repeater.
  • the wireless transceiver After the wireless transceiver successfully receives one or more messages, it waits until the random access time window of the upstream base station or another repeater arrives.
  • the wireless transceiver After successfully receiving one or more messages, the wireless transceiver performs forwarding according to the time slot scheduling of the upstream base station or another repeater when a specified access time slot arrives.
  • the present application further provides a random access relay system, comprising: a repeater as described above; and a terminal, receiving a broadcast signal sent by the relay, and relaying in a random access time window of the repeater The device sends a message.
  • one duty cycle consists of a sleep and random access time window, wherein the wireless transceiver and its controller are in a sleep or low power operating state during sleep, operating during a random access time window.
  • one broadcast period consists of a transmit signal and an idle, wherein the controller controls the wireless transceiver to transmit a broadcast signal during transmission of the signal and not to transmit the broadcast signal during idle periods.
  • the duty cycle is determined by the controller according to a certain rule, or according to a configuration instruction of the upstream base station.
  • the broadcast period is determined by the controller according to a certain rule, or according to a configuration instruction of the upstream base station.
  • the broadcast period is determined by the controller according to a certain rule, or according to a configuration instruction of the upstream base station.
  • the duty cycle and the broadcast cycle may have different cycle frequencies.
  • the broadcast signal carries synchronization information, and based on the synchronization information, the terminal can determine the start time of the next random access time window of the repeater.
  • the wireless transceiver After the wireless transceiver successfully receives one or more messages, it is immediately forwarded to the upstream base station or another repeater.
  • the wireless transceiver After the wireless transceiver successfully receives one or more messages, it waits until the random access time window of the upstream base station or another repeater arrives.
  • the wireless transceiver After successfully receiving one or more messages, the wireless transceiver performs forwarding according to the time slot scheduling of the upstream base station or another repeater when a specified access time slot arrives.
  • the terminal further comprises: the terminal adjusting the clock of the terminal to synchronize with the time count of the repeater, and determining that the repeater ends the sleep according to a known duty cycle configuration of the repeater. Or a low-power operating state, and the moment of entering the random access time window.
  • the terminal selects a random access time window in the working period to send a message to the repeater according to the determined working period.
  • the beneficial effects of the present application are: by dividing the working period of the repeater and broadcasting through the broadcast signal, thereby realizing intelligent switching of the entire network, thereby optimizing network scheduling, reducing network power consumption, and improving network communication stability. effect.
  • FIG. 1 is a structural diagram of a random access relay system of the present application
  • FIG. 2 is a structural diagram of another random access relay system of the present application.
  • FIG. 3 is a structural diagram of a random access repeater having a wireless transceiver and a controller thereof according to the present application;
  • Figure 5 is a schematic diagram of the cycle of the duty cycle and the broadcast cycle.
  • the present application provides a random access relay system, which includes: a base station 101, a random access repeater 102, and a terminal 103.
  • the base station 101 establishes a connection with a random relay 102 in the network; the random relay 102 can establish a connection with one or more terminals 103; the random access repeater 102 only arrives at the random access time window described herein.
  • the message of the terminal 103 can be received before being forwarded to the base station 101.
  • the terminal 103 receives the broadcast signal transmitted by the random access repeater 102, and transmits a message to the random access repeater 102 within the random access time window of the repeater.
  • another networking method with a random access repeater includes: a base station 201, a plurality of random access repeaters, and a plurality of terminals 204.
  • Three logical nodes The only difference from FIG. 1 is that the system includes a plurality of random access repeaters.
  • the base station 201 establishes a connection with the random access repeater 202 in the network; the random repeater 202 establishes a connection with another random access repeater in the network; the random repeater 203 can follow one or more
  • the terminal 204 establishes a connection; the random access repeater 203 can receive the packet of the terminal 204 only when the random access time window described in the present application arrives, and then forwards the packet to the upstream random access repeater; After the relay 203 successfully receives one or more messages, it can have three forwarding mechanisms, namely:
  • the first type wait until the random access time window of the upstream base station or another random access repeater arrives.
  • a random access repeater for implementing the above random access relay system includes a wireless transceiver 301 and a controller 302.
  • the wireless transceiver 301 is configured to implement transmission and reception of wireless signals to a terminal, a base station, and another random access repeater; it transmits a broadcast signal according to a determined broadcast period under the control of the controller 302, and is in control
  • the device 302 receives the message from the terminal within the random access time window and forwards it, thereby performing sleep or low power operation during sleep.
  • the controller 302 determines the wireless transceiver 301 and its own duty cycle and broadcast period, controls the reception and forwarding of the wireless transceiver 301 within a random time window, and the processing of messages received/transmitted to the terminal.
  • Another type of random access repeater for implementing the present application includes a wireless transceiver 401, a controller 402, a second controller 403, and a second wireless transceiver 404.
  • the wireless transceiver 401 transmits a broadcast signal according to the determined broadcast period, receives the message from the terminal, and forwards the message.
  • the controller 402 determines the wireless transceiver and its own duty cycle and broadcast period, controls the reception and forwarding of the wireless transceiver, and the processing of messages received/sent to the terminal within a random time window.
  • One of the above duty cycles is composed of a sleep and random access time window, wherein the wireless transceiver and its controller are in a sleep or low power operation state during sleep, and the wireless transceiver receives the message during the random access time window. And forward the message.
  • a broadcast period consists of a transmit signal and an idle, wherein the wireless transceiver transmits a broadcast signal during transmission of the signal and does not transmit the broadcast signal during idle periods.
  • the wireless transceiver 404 is for transmitting and receiving wireless signals to a base station or another random access repeater.
  • the controller 403 is configured to control the working state of the wireless transceiver 404 to wake up from the sleep state according to the opening time of the random access time window of another random access repeater, and to receive/send to the base station or another Processing of a random access relay message.
  • Two or more wireless transceivers and their controllers can directly forward packets through a wired data interface or a control signal interface, or indirectly through a controller.
  • clock synchronization is performed between two or more wireless transceivers and their controllers through a clock signal interface or a control signal interface; the clock synchronization includes clock frequency synchronization or clock phase synchronization.
  • each wireless transceiver and its controller can be independent of other wireless transceivers and their controllers, and the wireless transceiver and its controller can also be externally controlled using a control signal interface. Signals to wake up other wireless transceivers and their controllers.
  • the wireless transceiver After the wireless transceiver successfully receives one or more packets, it can be forwarded in the following three ways, namely:
  • the wireless transceiver After successfully receiving one or more messages, the wireless transceiver performs forwarding according to the time slot scheduling of the upstream base station or another repeater when a specified access time slot arrives.
  • the method includes the following steps:
  • Step S1 The repeater sends a broadcast signal.
  • the repeater predetermines its duty cycle and broadcast period.
  • a duty cycle consists of a sleep and random access time window, wherein the repeater is in a sleep or low power mode during sleep, receives messages during the random access time window, and forwards the message.
  • a broadcast period consists of a transmit signal and an idle, wherein the repeater transmits a broadcast signal during transmission of the signal and does not transmit the broadcast signal during idle periods.
  • FIG. 5 shows the duty cycle and broadcast period of the repeater.
  • the transmitting synchronization signal is broadcasted as a transmission signal period, and an idle period is between another transmission signal period.
  • the duty cycle and broadcast period of the repeater are determined by the repeater according to certain rules, or according to configuration instructions of the upstream base station. And the duty cycle and the broadcast cycle can have different cycle frequencies.
  • the duty cycle and the broadcast cycle can be flexibly configured according to the power consumption of the relay, the battery life requirement, and the technical specifications of the crystal of the terminal.
  • the general configuration principle is that the higher the battery life requirement, the longer the sleep period in one working cycle; the worse the technical index of the crystal oscillator, the shorter the broadcast period, that is, the wide emission
  • the frequency of the broadcast signal is higher.
  • the broadcast signal carries synchronization information, or clock information of the repeater, or both. Based on the synchronization information or clock information carried by the broadcast signal, the terminal can determine the start time of the next random access time window of the repeater.
  • Step S2 The terminal receives the broadcast signal.
  • the terminal After receiving the broadcast signal, the terminal adjusts its own clock according to the synchronization information or clock information carried in the broadcast signal, and synchronizes with the time counting of the repeater, and determines according to the known duty cycle configuration of the repeater.
  • the repeater ends the sleep or low power operation state and the moment of entering the random access time window.
  • Step S3 The terminal sends a message to the repeater in a random access time window of the repeater.
  • the terminal needs to send a message to the repeater, and the terminal chooses to send a message to the repeater within the random access time window of the repeater.
  • Step S4 After the repeater successfully receives the packet and successfully forwards the packet, it sends a confirmation message to the terminal.
  • the forwarding opportunity can be in three ways:
  • the first type Wait until the random access time window of the upstream base station or another repeater arrives.
  • the forwarding is performed when a specified access slot arrives.
  • the repeater After the repeater successfully forwards, the repeater sends a confirmation message to the terminal.
  • the terminal may determine that the packet is successfully forwarded. If the terminal waits for a predetermined duration or receives a failure message, the terminal selects a random access time window to resend the message or send a message to other repeaters.

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  • Computer Networks & Wireless Communication (AREA)
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Abstract

本申请公开了一种随机接入中继器、中继***及其中继方法，该方法包括：中继器发出广播信号；终端接收该广播信号；终端在中继器的随机接入时间窗内向中继器发送报文；中继器成功接收报文并成功转发之后，向终端发确认消息。本申请通过无线中继器支撑低速率无线通信网络的覆盖范围拓展和大规模组网。中继器不需要对终端的通信进行调度，只需按照一定的规律进行周期性休眠。大量的终端可以根据中继器的休眠周期自行调整上行报文，比如事件触发信号，的发送时间，确保这个报文能被中继器接收并转发，最终能被基站接收。

Description

一种随机接入中继器、中继***及其中继方法
相关申请的交叉引用
本申请基于申请号为201510542545X、申请日为2015年8月31日的中国专利申请提出，并要求该中国专利申请的优先权，该中国专利申请的全部内容在此引入本申请作为参考。
技术领域
本申请涉及通信领域，特别涉及一种低功耗随机接入中继器、中继***及其中继方法。
背景技术
物联网，或者感应器网络，通常通过中继器进行报文转发，以此扩展网络覆盖范围。每一个报文传输每经过一个中继器的转发称为“一跳”。但传统的中继器在实际应用中很许多局限性。
特别的，传统的中继器为了保持与下游节点的连接，总是保持在功耗很高的接收状态，实际应用中，由于实施环境的限制，中继器必须采用电池供电。但一直保持在接收状态的中继器如果采用电池供电，电量快速耗尽导致整个网络的寿命大为缩短，维护成本大幅攀升。
为了实现省电的目的，已有的设计让中继器为每一个有报文转发需求的下游节点分配一个时隙。中继器在这些分配好的时隙运行在高功耗的接收状态，在其他时间休眠。
实际应用中，一些下游节点的报文转发需求由事件触发，难以事先预知。中继器如果为这些下游节点预留时隙，会导致能耗的浪费。当下游节点数量很 多时，这些预留的时隙会导致中继器完全没有休眠的时间。但如果中继器不为这些下游节点预留时隙，当这些节点被特定的事件触发，产生并发送报文给中继器进行转发时，中继器可能正处于休眠状态，因而不能及时唤醒接收这些需要转发的报文，导致整个网络的通信稳定性大幅下降。
发明内容
本申请的目的在于克服现有技术之不足，提供一种混合网络组网方法，通过无线中继器支撑低速率无线通信网络的覆盖范围拓展和大规模组网。无线中继不需要对终端的通信进行调度，只需按照一定的规律进行周期性休眠。大量的终端可以根据中继的休眠周期自行调整发送上行报文(比如事件触发信号)的发送时间，确保这个报文能被中继器接收并转发，最终能被基站接收。中继器只用于接收一个或多个所述终端的报文并进行转发，不对终端的报文发送时刻进行调度或指定时隙。
本申请解决其技术问题所采用的技术方案是：
提供一种随机接入中继方法，包括如下步骤：中继器发出广播信号；终端接收该广播信号；终端在中继器的随机接入时间窗内向中继器发送报文；中继器成功接收报文并成功转发之后，向终端发确认消息。
优选的，中继器预先确定其工作周期和广播周期。
优选的，一个工作周期由休眠和随机接入时间窗组成，其中，中继器在休眠期间处于休眠或低功耗工作状态，在随机接入时间窗期间接收报文，并转发报文。
优选的，一个广播周期由发射信号和空闲组成，其中，中继器在发射信号期间发射广播信号，在空闲期间不发射广播信号。
优选的，中继器的工作周期由该中继器依据一定的规则决定，或根据上游基站的配置指令设定。
优选的，中继器的广播周期由该中继器依据一定的规则决定，或根据上游基站的配置指令设定。
优选的，工作周期和广播周期可以具有不同的周期频率。
优选的，在广播信号中携带同步信息，基于该同步信息，终端可以判断该中继器下一个随机接入时间窗的开始时刻。
优选的，其中终端接收该广播信号之后还包括：终端对自己的时钟进行调整，实现与中继器的时间计数同步，根据已知的中继器的工作周期配置，判断该中继器结束休眠或低功耗工作状态，以及进入随机接入时间窗的时刻。
优选的，终端根据判断出的工作周期，选择工作周期中的随机接入时间窗向中继器发送报文。
优选的，中继器成功接收一个或多个报文之后，立即转发给上游的基站或另外一个中继器。
优选的，中继器成功接收一个或多个报文之后，等到上游的基站或另外一个中继器的随机接入时间窗到来时再进行转发。
优选的，中继器成功接收一个或多个报文之后，根据上游的基站或另外一个中继器的时隙调度，在一个指定的接入时隙到来时再进行转发。
本申请还提供一种随机接入中继器，包括：
无线收发器，按照确定的广播周期发射广播信号，接收来自终端的报文，并进行转发；
控制器，确定无线收发器及其自身的工作周期和广播周期，在随机时间窗内控制无线收发器的接收和转发。
优选的，所述中继器包含至少两个无线收发器；两个或多个无线收发器及其控制器之间通过有线数据接口或控制信号接口直接进行报文转发，或者通过一个控制器间接进行报文转发。
优选的，两个或多个无线收发器及其控制器之间通过时钟信号接口，或者控制信号接口，进行时钟同步；所述时钟同步包括时钟频率同步或时钟相位同步。
优选的，每一个无线收发器及其控制器的休眠或唤醒可以独立于其他无线收发器及其控制器，无线收发器及其控制器还可以使用控制信号接口通过外部控制信号来唤醒其他无线收发器及其控制器。
优选的，一个工作周期由休眠和随机接入时间窗组成，其中，无线收发器及其控制器在休眠期间处于休眠或低功耗工作状态，在随机接入时间窗期间工作。
优选的，一个广播周期由发射信号和空闲组成，其中，控制器控制无线收发器在发射信号期间发射广播信号，在空闲期间不发射广播信号。
优选的，工作周期由控制器依据一定的规则决定，或根据上游基站的配置指令设定。
优选的，广播周期由控制器依据一定的规则决定，或根据上游基站的配置指令设定。
优选的，广播周期由控制器依据一定的规则决定，或根据上游基站的配置指令设定。
优选的，工作周期和广播周期可以具有不同的周期频率。
优选的，在广播信号中携带同步信息，基于该同步信息，终端可以判断该中继器下一个随机接入时间窗的开始时刻。
优选的，无线收发器成功接收一个或多个报文之后，立即转发给上游的基站或另外一个中继器。
优选的，无线收发器成功接收一个或多个报文之后，等到上游的基站或另外一个中继器的随机接入时间窗到来时再进行转发。
优选的，无线收发器成功接收一个或多个报文之后，根据上游的基站或另外一个中继器的时隙调度，在一个指定的接入时隙到来时再进行转发。
最后，本申请还提供一种随机接入中继***，包括：如上所述的中继器；以及终端，接收中继器发送的广播信号，在中继器的随机接入时间窗内向中继器发送报文。
优选的，一个工作周期由休眠和随机接入时间窗组成，其中，无线收发器及其控制器在休眠期间处于休眠或低功耗工作状态，在随机接入时间窗期间工作。
优选的，一个广播周期由发射信号和空闲组成，其中，控制器控制无线收发器在发射信号期间发射广播信号，在空闲期间不发射广播信号。
优选的，工作周期由控制器依据一定的规则决定，或根据上游基站的配置指令设定。
优选的，广播周期由控制器依据一定的规则决定，或根据上游基站的配置指令设定。
优选的，广播周期由控制器依据一定的规则决定，或根据上游基站的配置指令设定。
优选的，工作周期和广播周期可以具有不同的周期频率。
优选的，在广播信号中携带同步信息，基于该同步信息，终端可以判断该中继器下一个随机接入时间窗的开始时刻。
优选的，无线收发器成功接收一个或多个报文之后，立即转发给上游的基站或另外一个中继器。
优选的，无线收发器成功接收一个或多个报文之后，等到上游的基站或另外一个中继器的随机接入时间窗到来时再进行转发。
优选的，无线收发器成功接收一个或多个报文之后，根据上游的基站或另外一个中继器的时隙调度，在一个指定的接入时隙到来时再进行转发。
优选的，其中终端接收该广播信号之后还包括：终端对自己的时钟进行调整，实现与中继器的时间计数同步，根据已知的中继器的工作周期配置，判断该中继器结束休眠或低功耗工作状态，以及进入随机接入时间窗的时刻。
优选的，终端根据判断出的工作周期，选择工作周期中的随机接入时间窗向中继器发送报文。
本申请的有益效果是：通过对中继器的工作周期进行划分，并通过广播信号的广播，从而实现全网的智能切换，达到优化网络调度、降低网络功耗、提高网络通信的稳定性的效果。
以下结合附图及实施例对本申请作进一步详细说明；但本申请的一种混合网络组网方法不局限于实施例。
附图说明
为了更清楚地说明本申请实施例或现有技术中的技术方案，下面将对实施例或现有技术描述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申请中记载的一些实施例，对于本领域普通技术人员来讲，还可以根据这些附图获得其他的附图。
图1是本申请一个随机接入中继***的结构图；
图2是本申请另一个随机接入中继***的结构图；
图3是本申请的具有一个无线收发器及其控制器的随机接入中继器的结构图；
图4是本申请随机接入中继方法的方法流程图；
图5是工作周期和广播周期的周期示意图。
具体实施方式
为了使本领域的人员更好地理解本申请中的技术方案，下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员所获得的所有其他实施例，都应当属于本申请保护的范围。
下面结合本申请附图进一步说明本申请具体实现。
参见图1所示，本申请提供一种随机接入中继***，该***包括：基站101、随机接入中继器102和终端103。
基站101与网络中的随机中继102建立连接；所述随机中继102可以跟一个或多个终端103建立连接；随机接入中继器102只有在本申请所描述的随机接入时间窗到来时才能接收终端103的报文，之后转发给基站101。终端103接收随机接入中继器102发送的广播信号，在中继器的随机接入时间窗内向随机接入中继器102发送报文。
参见图2所示，本申请的另一种带有随机接入中继器的组网方法，该随机接入中继***包括：基站201、多个随机接入中继器和多个终端204三种逻辑节点。与图1的区别仅在于，该***中包括多个随机接入中继器。
基站201与网络中的随机接入中继器202建立连接；所述随机中继器202与网络中另外一个随机接入中继器建立连接；所述随机中继器203可以跟一个或多个终端204建立连接；随机接入中继器203只有在本申请所描述的随机接入时间窗到来时才能接收终端204的报文，之后转发给其上游随机接入中继器；随机接入中继器203成功接收一个或多个报文之后，可以具有三种转发机制，即：
第一种：等到上游的基站或另外一个随机接入中继器的随机接入时间窗到来时再进行转发。
第二种：根据上游的基站或另外一个随机接入中继器的时隙调度，在一个指定的接入时隙到来时再进行转发。
第三种：立即转发给上游的基站或另外一个随机接入中继器。
下面结合图3，详细描述图1和图2中所示的随机接入中继器的结构。
参见图3所示，一种用于实现上述随机接入中继***的随机接入中继器，包括无线收发器301和控制器302。
所述无线收发器301用于面向终端、基站和另外一个随机接入中继器，实现无线信号的发送和接收；其在控制器302的控制下按照确定的广播周期发射广播信号，并在控制器302的控制下在随机接入时间窗内接收来自终端的报文，并进行转发，进而在休眠期间休眠或低功耗运行。
所述控制器302确定无线收发器301及其自身的工作周期和广播周期，在随机时间窗内控制无线收发器301的接收和转发，以及对接收自/发送给终端的报文的处理。
另外一种用于实现本申请所描述的随机接入中继器，包括无线收发器401、控制器402、第二个控制器403和第二个无线收发器404。
所述无线收发器401按照确定的广播周期发射广播信号，接收来自终端的报文，并进行转发。
所述控制器402确定无线收发器及其自身的工作周期和广播周期，在随机时间窗内控制无线收发器的接收和转发，以及对接收自/发送给终端的报文的处理。
上述的一个工作周期由休眠和随机接入时间窗组成，其中，无线收发器及其控制器在休眠期间处于休眠或低功耗工作状态，在随机接入时间窗期间无线收发器接收报文，并转发报文。一个广播周期由发射信号和空闲组成，其中，无线收发器在发射信号期间发射广播信号，在空闲期间不发射广播信号。
所述无线收发器404用于面向基站或者另外一个随机接入中继器的无线信号的发送和接收。
所述控制器403用于控制无线收发器404的工作状态包括根据另外一个随机接入中继器的随机接入时间窗的开启时刻从休眠状态中唤醒，以及对接收自/发送给基站或另外一个随机接入中继的报文的处理。
本领域技术人员可以知道，上述只是用于示出的目的，在实际中，在中继器内可以集成多个可以互相通信的无线收发器及其控制器，二者配合工作。
两个或多个无线收发器及其控制器之间可以通过有线数据接口或控制信号接口直接进行报文转发，或者通过一个控制器间接进行报文转发。
进一步的，两个或多个无线收发器及其控制器之间通过时钟信号接口，或者控制信号接口，进行时钟同步；所述时钟同步包括时钟频率同步或时钟相位同步。
或者，每一个无线收发器及其控制器的休眠或唤醒可以独立于其他无线收发器及其控制器，无线收发器及其控制器还可以使用控制信号接口通过外部控 制信号来唤醒其他无线收发器及其控制器。
无线收发器成功接收一个或多个报文之后，可以使用以下三种方式转发，即：
第一种：立即转发给上游的基站或另外一个中继器。
第二种：等到上游的基站或另外一个中继器的随机接入时间窗到来时再进行转发。
第三种，无线收发器成功接收一个或多个报文之后，根据上游的基站或另外一个中继器的时隙调度，在一个指定的接入时隙到来时再进行转发。
以上结合图3描述了随机接入中继器的构造，下面结合附图4和5详细描述该随机接入中继***的工作流程。
如图4所示，该方法包括如下步骤：
步骤S1、中继器发出广播信号。
中继器预先确定其工作周期和广播周期。一个工作周期由休眠和随机接入时间窗组成，其中，中继器在休眠期间处于休眠或低功耗工作状态，在随机接入时间窗期间接收报文，并转发报文。一个广播周期由发射信号和空闲组成，其中，中继器在发射信号期间发射广播信号，在空闲期间不发射广播信号。其中，图5示出了中继器的工作周期和广播周期。其中发射同步信号广播为发射信号周期，到另一个发射信号周期之间为空闲周期。
中继器的工作周期和广播周期由该中继器依据一定的规则决定，或根据上游基站的配置指令设定。并且工作周期和广播周期可以具有不同的周期频率。
工作周期和广播周期可以根据中继的功耗、电池寿命要求、终端的晶振的技术指标等信息灵活配置。一般的配置原则为，对电池寿命要求越高，一个工作周期中的休眠期就越长；晶振的技术指标越差，广播周期就越短，即发射广 播信号的频率就越高。在广播信号中携带有同步信息，或中继器的时钟信息或者二者。基于广播信号携带的同步信息或时钟信息，终端可以判断该中继器下一个随机接入时间窗的开始时刻。
步骤S2、终端接收该广播信号。
终端接收该广播信号，之后终端根据广播信号中携带的同步信息或时钟信息，对自己的时钟进行调整，实现与中继器的时间计数同步，根据已知的中继器的工作周期配置，判断该中继器结束休眠或低功耗工作状态，以及进入随机接入时间窗的时刻。
步骤S3、终端在中继器的随机接入时间窗内向中继器发送报文。
一旦有事件触发，终端需要向中继器发送报文时，终端选择在中继器的随机接入时间窗内向中继器发送报文。
步骤S4、中继器成功接收报文并成功转发之后，向终端发确认消息。
中继器成功接收一个或多个报文之后，转发时机可以有三种方式：
第一种：等到上游的基站或另外一个中继器的随机接入时间窗到来时再进行转发。
第二种：根据上游的基站或另外一个中继器的时隙调度，在一个指定的接入时隙到来时再进行转发。
第三种：立即转发给上游的基站或另外一个中继器。
中继器在成功转发之后，向终端发确认消息。
终端接到该确认消息之后，可判断报文转发成功，如果终端等待预定时长或接到失败消息时，终端选择随机接入时间窗重新发送该报文或者向其他中继器发送报文。
上述实施例仅用来进一步说明本申请所描述的方法的具体实现。但本申请 并不局限于实施例，凡是依据本申请的技术实质对以上实施例所作的任何简单修改、等同变化与修饰，均落入本申请技术方案的保护范围内。

Claims (42)

  1. 一种随机接入中继方法，其特征在于,包括如下步骤：
    中继器发出广播信号；
    终端接收该广播信号；
    终端在中继器的随机接入时间窗内向中继器发送报文；
    中继器成功接收报文并成功转发之后，向终端发确认消息。
  2. 根据权利要求1所述的一种随机接入中继方法，其特征在于：中继器预先确定其工作周期和广播周期。
  3. 根据权利要求2所述的一种随机接入中继方法，其特征在于：一个工作周期由休眠和随机接入时间窗组成，其中，中继器在休眠期间处于休眠或低功耗工作状态，在随机接入时间窗期间接收报文，并转发报文。
  4. 根据权利要求2所述的一种随机接入中继方法，其特征在于：一个广播周期由发射信号和空闲组成，其中，中继器在发射信号期间发射广播信号，在空闲期间不发射广播信号。
  5. 根据权利要求2所述的一种随机接入中继方法，其特征在于：中继器的工作周期由该中继器依据一定的规则决定，或根据上游基站的配置指令设定。
  6. 根据权利要求2所述的一种随机接入中继方法，其特征在于：中继器的广播周期由该中继器依据一定的规则决定，或根据上游基站的配置指令设定。
  7. 根据权利要求2所述的一种随机接入中继方法，其特征在于：工作周期和广播周期可以具有不同的周期频率。
  8. 根据权利要求1-7任一所述的一种随机接入中继方法，其特征在于： 在广播信号中携带同步信息，基于该同步信息，终端可以判断该中继器下一个随机接入时间窗的开始时刻。
  9. 根据权利要求1-7任一所述的一种随机接入中继方法，其特征在于：其中终端接收该广播信号之后还包括：终端对自己的时钟进行调整，实现与中继器的时间计数同步，并根据已知的中继器的工作周期配置，判断该中继器结束休眠或低功耗工作状态，以及进入随机接入时间窗的时刻。
  10. 根据权利要求9所述的一种随机接入中继方法，其特征在于：终端根据判断出的工作周期的随机接入时间窗的开始时刻，向中继器发送报文。
  11. 根据权利要求1-7任一所述的一种随机接入中继方法，其特征在于：中继器成功接收一个或多个报文之后，立即转发给上游的基站或另外一个中继器。
  12. 根据权利要求1-7任一所述的一种随机接入中继方法，其特征在于：中继器成功接收一个或多个报文之后，等到上游的基站或另外一个中继器的随机接入时间窗到来时再进行转发。
  13. 根据权利要求1-7任一所述的一种随机接入无线中继，其特征在于：中继器成功接收一个或多个报文之后，根据上游的基站或另外一个中继器的时隙调度，在一个指定的接入时隙到来时再进行转发。
  14. 一种随机接入中继器，其特征在于，包括：
    无线收发器，按照确定的广播周期发射广播信号，接收来自终端的报文，并进行转发；
    控制器，确定无线收发器及其自身的工作周期和广播周期，在随机时 间窗内控制无线收发器的接收和转发。
  15. 根据权利要求14所述的一种随机接入中继器，其特征在于：所述中继器包含至少两个无线收发器；两个或多个无线收发器及其控制器之间通过有线数据接口或控制信号接口直接进行报文转发，或者通过一个控制器间接进行报文转发。
  16. 根据权利要求15所述的一种随机接入中继器，其特征在于：两个或多个无线收发器及其控制器之间通过时钟信号接口，或者控制信号接口，进行时钟同步；所述时钟同步包括时钟频率同步或时钟相位同步。
  17. 根据权利要求15所述的一种随机接入中继器，其特征在于：每一个无线收发器及其控制器的休眠或唤醒可以独立于其他无线收发器及其控制器，无线收发器及其控制器还可以使用控制信号接口通过外部控制信号来唤醒其他无线收发器及其控制器。
  18. 根据权利要求14-17任一所述的随机接入中继器，其特征在于：一个工作周期由休眠和随机接入时间窗组成，其中，无线收发器及其控制器在休眠期间处于休眠或低功耗工作状态，在随机接入时间窗期间工作。
  19. 根据权利要求14-17任一所述的随机接入中继器，其特征在于：一个广播周期由发射信号和空闲组成，其中，控制器控制无线收发器在发射信号期间发射广播信号，在空闲期间不发射广播信号。
  20. 根据权利要求14-17任一所述的随机接入中继器，其特征在于：工作周期由控制器依据一定的规则决定，或根据上游基站的配置指令设定。
  21. 根据权利要求14-17任一所述的随机接入中继器，其特征在于：广播周期由控制器依据一定的规则决定，或根据上游基站的配置指令设 定。
  22. 根据权利要求14-17任一所述的随机接入中继器，其特征在于：广播周期由控制器依据一定的规则决定，或根据上游基站的配置指令设定。
  23. 根据权利要求14-17任一所述的随机接入中继器，其特征在于：工作周期和广播周期可以具有不同的周期频率。
  24. 根据权利要求14-17任一所述的随机接入中继器，其特征在于：在广播信号中携带同步信息，基于该同步信息，终端可以判断该中继器下一个随机接入时间窗的开始时刻。
  25. 根据权利要求14-17任一所述的随机接入中继器，其特征在于：无线收发器成功接收一个或多个报文之后，立即转发给上游的基站或另外一个中继器。
  26. 根据权利要求14-17任一所述的随机接入中继器，其特征在于：无线收发器成功接收一个或多个报文之后，等到上游的基站或另外一个中继器的随机接入时间窗到来时再进行转发。
  27. 根据权利要求14-17任一所述的随机接入中继器，其特征在于：无线收发器成功接收一个或多个报文之后，根据上游的基站或另外一个中继器的时隙调度，在一个指定的接入时隙到来时再进行转发。
  28. 一种随机接入中继***，包括：
    如权利要求14-17任一所述的中继器；
    终端，接收中继器发送的广播信号，在中继器的随机接入时间窗内向中继器发送报文。
  29. 根据权利要求28所述的中继***，其特征在于：一个工作周期由 休眠和随机接入时间窗组成，其中，无线收发器及其控制器在休眠期间处于休眠或低功耗工作状态，在随机接入时间窗期间工作。
  30. 根据权利要求28所述的中继***，其特征在于：一个广播周期由发射信号和空闲组成，其中，控制器控制无线收发器在发射信号期间发射广播信号，在空闲期间不发射广播信号。
  31. 根据权利要求28所述的中继***，其特征在于：工作周期由控制器依据一定的规则决定。
  32. 根据权利要求28所述的中继***，其特征在于：广播周期由控制器依据一定的规则决定。
  33. 根据权利要求28所述的中继***，其特征在于：广播周期根据上游基站的配置指令设定。
  34. 根据权利要求28所述的中继***，其特征在于：工作周期和广播周期可以具有不同的周期频率。
  35. 根据权利要求28所述的中继***，其特征在于：在广播信号中携带同步信息。
  36. 根据权利要求28所述的中继***，其特征在于：无线收发器成功接收一个或多个报文之后，立即转发给上游的基站或另外一个中继器。
  37. 根据权利要求28所述的中继***，其特征在于：无线收发器成功接收一个或多个报文之后，等到上游的基站或另外一个中继器的随机接入时间窗到来时再进行转发。
  38. 根据权利要求28所述的中继***，其特征在于：工作周期根据上游基站的配置指令设定。
  39. 根据权利要求35所述的中继***，其特征在于：基于该同步信 息，终端可以判断该中继器下一个随机接入时间窗的开始时刻。
  40. 根据权利要求28所述的中继***，其特征在于：无线收发器成功接收一个或多个报文之后，根据上游的基站或另外一个中继器的时隙调度，在一个指定的接入时隙到来时再进行转发。
  41. 根据权利要求28所述的中继***，其特征在于：其中终端接收该广播信号之后还包括：终端对自己的时钟进行调整，实现与中继器的时间计数同步，根据已知的中继器的工作周期配置，判断该中继器结束休眠或低功耗工作状态，以及进入随机接入时间窗的时刻。
  42. 根据权利要求28所述的中继***，其特征在于：终端根据判断出的工作周期，选择工作周期中的随机接入时间窗向中继器发送报文。
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