WO2021129893A1 - 一种用于无线通信系统的设备通信方法及系统 - Google Patents

一种用于无线通信系统的设备通信方法及系统 Download PDF

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Publication number
WO2021129893A1
WO2021129893A1 PCT/CN2021/075554 CN2021075554W WO2021129893A1 WO 2021129893 A1 WO2021129893 A1 WO 2021129893A1 CN 2021075554 W CN2021075554 W CN 2021075554W WO 2021129893 A1 WO2021129893 A1 WO 2021129893A1
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Prior art keywords
slave
master
processing module
link
confirmation mode
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PCT/CN2021/075554
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English (en)
French (fr)
Inventor
徐智勇
兰启俊
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重庆物奇科技有限公司
上海物麒科技有限公司
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Priority to GB2114581.8A priority Critical patent/GB2596955B/en
Priority to JP2021560715A priority patent/JP2023546303A/ja
Priority to CA3132364A priority patent/CA3132364A1/en
Publication of WO2021129893A1 publication Critical patent/WO2021129893A1/zh
Priority to US17/468,438 priority patent/US20220015169A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0808—Non-scheduled access, e.g. ALOHA using carrier sensing, e.g. carrier sense multiple access [CSMA]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1829—Arrangements specially adapted for the receiver end
    • H04L1/1854—Scheduling and prioritising arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1867—Arrangements specially adapted for the transmitter end
    • H04L1/1896—ARQ related signaling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/80—Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication
    • 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
    • H04W52/0261—Power saving arrangements in terminal devices managing power supply demand, e.g. depending on battery level
    • H04W52/0264—Power saving arrangements in terminal devices managing power supply demand, e.g. depending on battery level by selectively disabling software applications
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/14—Direct-mode setup
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/18—Management of setup rejection or failure
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/19—Connection re-establishment
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/30—Connection release
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/18—Self-organising networks, e.g. ad-hoc networks or sensor networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L2001/0092—Error control systems characterised by the topology of the transmission link
    • H04L2001/0097—Relays
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W80/00—Wireless network protocols or protocol adaptations to wireless operation
    • H04W80/02—Data link layer protocols
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02—Terminal devices
    • H04W88/04—Terminal devices adapted for relaying to or from another terminal or user
    • 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 Bluetooth communication technology, in particular to a device communication method and system used in a wireless communication system.
  • Wireless communication uses radio waves, microwaves and infrared rays to communicate between multiple nodes without conductors or cables.
  • Wireless communication technologies include Bluetooth, Zig-Bee and Z-Wave. At present, the fast pace of life promotes the use of Bluetooth technology. To achieve the development of voice information interaction technology, Bluetooth headsets are one of the important products that use Bluetooth technology to interact with voice information.
  • the dual wireless Bluetooth headset includes two earphones.
  • the two earphones and the playback host device (such as a mobile phone, tablet, computer, etc.) form a wireless communication system, and the two earphones synchronously play music from the host device or make a call.
  • the communication implementation schemes between the two headsets of dual wireless bluetooth headsets include the following:
  • Bluetooth headsets include a main headset and a secondary headset.
  • the host device When communicating with a Bluetooth headset, the host device only communicates with the primary headset.
  • a Bluetooth communication link is established between the primary headset and the secondary headset, and the primary headset is responsible for forwarding to the secondary headset.
  • the advantage of this communication method of bluetooth headset is: the existing bluetooth protocol can support, the disadvantage is that the main headset needs to interact with the host device a large amount of data, but also needs to forward a large amount of data to the secondary headset, the power consumption of the main headset will be lower than
  • the secondary earphone is much larger, and the playback quality of the secondary earphone depends on the main earphone.
  • the second is to modify the Bluetooth A2DP protocol.
  • the host device establishes two A2DP links with the main headset and the secondary headset respectively, and the host device communicates and interacts with the primary headset and the secondary headset respectively.
  • the advantage of this method is that it saves power, and there is no mutual influence between the main earphone and the auxiliary earphone.
  • the disadvantage of this method is that the Bluetooth protocol of the host device and the main earphone and the auxiliary earphone need to be modified and adaptability. It is relatively poor and difficult to promote on a large scale.
  • the third is: monitoring mode, the secondary earphone monitors the data packets sent by the host device to the main earphone, and then uses the Bluetooth time slot to reply ACK to the main earphone, and the ACK informs the main earphone whether the secondary earphone has received the data packet from the host device.
  • the advantage of this method is that the secondary earphone can only reply to the main earphone whether the packet is received.
  • the disadvantage is that it cannot support the monitoring of the content interaction of the Bluetooth link management protocol (LMP, Link Manager Protocol).
  • the monitoring chain cannot be maintained through simple monitoring.
  • the main headset also needs an additional BT link or BLE link to notify the secondary headset of the change of the LMP content between the host device and the main headset, so that additional link overhead is added to the software and hardware.
  • the present invention intends to provide a device communication method for a wireless communication system, so that the host device does not need to make any modification, the main earphone does not need to forward voice or call data, and there is no need to maintain an extra link between the main earphone and the auxiliary earphone for a long time. Way to achieve low power consumption and high adaptability of the headset.
  • the device communication method used in the wireless communication system in this solution includes the following steps:
  • the slave device negotiates with the master device to enter the listening confirmation mode, the listening link of the slave device enters the listening confirmation mode, the master device and the host device enters the listening confirmation mode, and the listening confirmation mode is received by the master device or the slave device from the host device.
  • the master device then continues to receive the confirmation information sent by the slave device. According to the reception of the two devices, the master device replies to the host device in the next communication time slot;
  • the beneficial effect of this solution is: let the communication between the slave device, the master device and the host device perform a monitoring confirmation mode, and let the slave device send confirmation information on whether the communication data is received in the communication time slot, for example, the slave device is used as a slave headset of a Bluetooth headset
  • the slave device sends to the master headset as the Bluetooth headset as the reception confirmation message of the master device.
  • the master device is based on the two devices (the master device and the slave device) in the next communication time slot.
  • the slave device exits the monitoring confirmation mode with the master device.
  • the data transmission in the communication time slot is based on the length of the data packet between the host device and the master device in the communication time slot, which may increase the number of data between the host device and the master device. A retransmission of several milliseconds. These retransmissions of several milliseconds will not affect the transmission of the ACL asynchronous link.
  • the delay of several milliseconds is equivalent to delaying the data packet transmission between the host device and the master device to the next communication Time slot; when the master device and the master device synchronize the link transmission, the master device and the slave device can only exchange short data packets without affecting the synchronization link.
  • the communication of the link management data between the master device and the slave device does not need to be occupied all the time Compared with the existing Bluetooth communication method, a single communication link can reduce the power consumption of the master device and the slave device by reducing one link, which will help reduce the burden on the device and improve the user experience.
  • the way of exiting the monitoring confirmation mode is to exit through the Bluetooth private communication protocol interaction between the slave device and the master device.
  • the beneficial effects are: exit through the Bluetooth communication protocol interactively, the exit process is smoother, the synchronization between the master device and the slave device is better, and the exit monitoring confirmation mode will not affect the communication between the host device and the master device, for example, when exiting the monitoring confirmation mode It will not affect the music played by the master device, but the music played by the slave device will be affected; for example, for calls, neither the master device nor the slave device will be affected.
  • the way of exiting the monitoring confirmation mode is that the slave device is disconnected.
  • the beneficial effect is: the master device can re-receive the communication data by allowing the slave device to exit the monitoring confirmation mode, and the master device's call and music playback are not affected.
  • the information exchange includes long packet data and short packet data
  • the long packet data includes link management data
  • the short packet data includes confirmation information
  • the beneficial effect is that the information exchange is sent as short packet data or long packet data, which can ensure that the corresponding data is completely transmitted in the communication time slot, and reduce the length of the occupied communication time slot.
  • the reply message is sent in a communication time slot after a period of time after the confirmation message is received.
  • the beneficial effect is that the reply message is sent in the next communication time slot, and if the reply message is sent after the short packet data occupies part of the communication time slot, the communication time slot will be occupied, and the long packet data of the reply message will be prevented from occupying the communication time slot.
  • a device communication system for a wireless communication system based on the above device communication method for a wireless communication system includes a master device equipped with a Bluetooth communication protocol, a slave device, and a host device, the master device includes a master processing module, and the slave device The device includes a slave processing module, the slave processing module establishes a listening link between the master device and the host device, the slave processing module negotiates with the master processing module to enter the listening confirmation mode, the listening link enters the listening confirmation mode, the The main processing module and the host device enter the monitoring confirmation mode, and the slave processing module exits the monitoring confirmation mode of the communication link with the main processing module after the information is exchanged.
  • the slave processing module of the slave device negotiates with the master processing module of the master device to perform the monitoring confirmation mode.
  • the slave headset of the Bluetooth headset and the processing module inside the master headset negotiate to enter the monitoring confirmation mode by sending information, and then Information interaction is carried out in the communication time slot, and the monitoring confirmation mode is exited after the information interaction is completed, that is, the master headset and the slave headset will not always occupy a communication link for information interaction, which is less than the existing Bluetooth communication method
  • One link reduces the power consumption of the master device and the slave device and reduces the burden on the device.
  • the continuous use time of the master device and the slave device is longer, and the user experience is better.
  • the monitoring confirmation mode is that the sender sends confirmation information in a communication time slot and receives reply information from the reply party in the next communication time slot.
  • the sender of the confirmation information includes a slave device or a master device.
  • the responding party includes the master device or the slave device.
  • each interactive information between the master device and the slave device is sent in a communication time slot, without occupying the communication time slot of the system, for example, not occupying the sending time slot for sending music data packets, and will not cause interference. There is no need to occupy a separate communication link, and the energy consumption between the master device and the slave device is the same.
  • slave processing module interactively exits the monitoring confirmation mode with the master processing module through the Bluetooth private communication protocol.
  • the beneficial effect is: exit through protocol interaction, such as sending an exit message from the processing module to the main processing module, the slave processing device and the master processing device will exit the monitoring confirmation mode, and there is no need to suspend the communication between the slave processing device and the master processing device, improving users Experience degree.
  • the slave processing module exits the monitoring confirmation mode by disconnecting the communication link with the master processing module.
  • the beneficial effect is that the monitoring confirmation mode is exited by disconnecting the communication link between the slave processing device and the master processing device. In such a sudden disconnection of the link, the communication data can be retransmitted, such as retransmitting the master processing.
  • the music data package played by the device keeps the original call or music playback in the main processing module.
  • FIG. 1 is a flowchart of a device communication method used in a wireless communication system to monitor a link in Embodiment 1 of the present invention
  • FIG. 2 is a time slot diagram of no new data transmission between the master earphone and the slave earphone when the host device in the device communication method for the wireless communication system in the first embodiment of the present invention is used as the packet sending end;
  • FIG. 3 is a time slot diagram of the main earphone sending new data when the host device in the device communication method used in the wireless communication system in the first embodiment of the present invention is used as the packet sending end;
  • FIG. 4 is a time slot diagram for sending new data from the headset when the host device is used as the packet sending terminal in the device communication method for the wireless communication system in the first embodiment of the present invention
  • FIG. 5 is a time slot diagram of no new data transmission between the master earphone and the slave earphone when the host device is used as the packet receiving terminal in the device communication method for the wireless communication system in the first embodiment of the present invention
  • FIG. 6 is a time slot diagram of the main earphone sending new data when the host device is used as the packet receiving terminal in the device communication method for the wireless communication system in the first embodiment of the present invention
  • FIG. 7 is a time slot diagram for sending new data from the headset when the host device is used as the packet receiving terminal in the device communication method for the wireless communication system in the first embodiment of the present invention
  • FIG. 8 is a schematic block diagram of a device communication system used in a wireless communication system in Embodiment 1 of the present invention.
  • the device communication system used in the wireless communication system is shown in Figure 8: It includes a master device equipped with a Bluetooth communication protocol, a slave device, and a host device.
  • the master device is the master headset in the Bluetooth headset
  • the slave device is the slave device in the Bluetooth headset.
  • the master device includes a master processing module
  • the slave device includes a slave processing module.
  • the master processing module and the slave processing module can use the existing CSR8645 Bluetooth module
  • the host device can be a mobile phone or a computer.
  • the device communication method for the wireless communication system based on the device communication system for the wireless communication system, as shown in Fig. 1, includes the following steps:
  • the communication link established between the master device through the main processing module and the host device is defined as Bluetooth link 1, that is, the communication link between the main headset and the mobile phone is Bluetooth link 1, and the master device communicates with the slave device through the main processing module.
  • the communication link established between the slave processing modules is defined as Bluetooth link 2.
  • the master device sends the data packets of Bluetooth link 1 to the slave device through Bluetooth link 2, that is, the master headset sends the data packets received from the mobile phone to the slave device. Headphones, data packets include link management information, such as the host device’s Bluetooth address, clock information, frequency hopping information, and encryption key, allowing the slave device to establish a monitoring link for the communication between the master device and the host device.
  • the monitoring link is defined as Bluetooth link three, that is, from the headset through the monitoring link to obtain the voice information sent by the mobile phone to the main headset in a monitoring mode, such as music or call information;
  • the slave processing module of the slave device negotiates with the master processing module of the master device to enter the listening confirmation mode, that is, the Bluetooth link 2 negotiates to enter the listening confirmation mode, and the slave processing module negotiates by sending a data packet entering the listening confirmation mode to the master processing module
  • the slave processing module sends ACK information to the main processing module
  • the monitoring link of the slave device enters the monitoring confirmation mode, that is, the Bluetooth link 1 and Bluetooth link 3 enter the monitoring confirmation mode
  • the monitoring confirmation mode is the communication time slot
  • the internal sender sends the confirmation message and receives the reply message from the responder in the next communication time slot.
  • the sender can be a master device or a slave device, and the receiver can be a slave device or a master device;
  • the communication link between the slave device and the master device exits the monitoring confirmation mode.
  • the slave processing module interacts with the master processing module through the Bluetooth private communication protocol to exit the monitoring confirmation mode, for example, through Sending a message on behalf of exiting the monitoring confirmation mode.
  • the monitoring confirmation mode in the above steps is that the sender sends confirmation information in the communication time slot and receives the reply information from the reply party in the next communication time slot.
  • the confirmation information includes whether the communication data is received or the short packet data of the reply.
  • the reply information includes The short packet data of the short packet data reply or the long packet data of the link management data.
  • the host device is used as the sender, which is defined as Master, the main earphone is defined as Primary, and the slave earphone is defined as Secondary. There is only short packet interaction between the main earphone and the slave earphone.
  • the master headset and the slave headset are enabled to receive data packets from the host device synchronously.
  • the data packet can be a music data packet sent by the host device.
  • the interval time can be the next communication time slot, and the short packet is returned from the headset to the main headset, such as the acknowledgement of the data packet (ACK) or not receiving the short packet Data packet (NACK)
  • the master headset judges whether the slave headset receives the data packet from the host device according to the content of the received short packet, and then in the next Bluetooth time slot, the master headset receives the host device data packet according to its own situation of receiving the host device data packet and receives the host from the headset In the case of device data packets, reply ACK.
  • the host device is used as the sender, which is defined as Master, the main earphone is defined as Primary, and the slave earphone is defined as Secondary. There is a long packet interaction between the main earphone and the slave earphone.
  • the long packet can include link management data, such as the host device Bluetooth address, clock information, and frequency hopping information And encryption keys, etc.
  • the slave headset responds to the master headset with a short packet to notify the master headset of the packet reception.
  • the short packet can be ACK, and the master headset receives the slave headset’s packet reception.
  • the master headset will reply to the slave headset with a long packet at intervals, and the slave headset will reply with a short packet after receiving the long packet to confirm the receipt of the above long packet.
  • the headset in the data interaction process between the master headset and the host device, when the slave headset has a long packet to be sent to the master headset, after the master headset and the slave headset receive the data packet from the host device, the headset sends the long packet To the main earphone, the main earphone detects whether it is a short packet or a long packet in real time according to the received packet content. After the main earphone detects the long packet, the receiving window is extended to complete the long packet reception, and then the main earphone replies the short packet (such as ACK) to the slave earphone, Confirm receipt of the above long package.
  • the short packet such as ACK
  • the host device is used as the packet receiving terminal, which is defined as Slave, the main earphone is defined as Primary, and the slave earphone is defined as Secondary, and the short packet interaction between the main earphone and the slave earphone
  • the slave headset ignores the data packet sent by the master headset to the host device.
  • the slave headset enables reception.
  • the headset sends a short packet to the master headset.
  • the master headset After the master headset receives the data packet from the host device, the master headset immediately enables receiving the short packet from the slave headset, and the master headset According to the content of the short packet, it is judged whether the short packet or the long packet, and the situation of receiving the packet from the headset, to determine the subsequent reply to the host device confirmation message (ACK).
  • ACK host device confirmation message
  • the host device is used as the packet receiving terminal, which is defined as Slave, the main earphone is defined as Primary, and the slave earphone is defined as Secondary. There is a long packet interaction between the main earphone and the slave earphone.
  • the master headset when the master headset has a long packet to be sent to the slave headset, similar to the situation where the host device serves as the packet sender, the master headset and the slave headset receive the data from the host device. After the packet is packaged, the slave headset first sends a short packet to the master headset, and then the master headset sends a long packet to the slave headset. Finally, the headset responds with an acknowledgment message (ACK) to confirm receipt of the long packet.
  • ACK acknowledgment message
  • the slave headset when the slave headset has a long packet to be sent to the master headset, after the master headset and the slave headset correctly receive the data packet from the host device, the slave headset directly sends the long packet.
  • the packet is sent to the main earphone. After receiving the data packet from the host device, the main earphone immediately starts to detect the long packet received. After the main earphone receives the long packet sent from the earphone, it responds with an acknowledgement message (ACK) to confirm receipt of the long packet.
  • ACK acknowledgement message
  • the slave earphone by allowing the slave earphone to transmit link management information in the communication time slot through the monitoring confirmation mode, the link that specifically transmits link management information in the prior art is cancelled, and after the corresponding link management information transmission is completed
  • Exiting the monitor confirmation mode through a private protocol allows the main headset and the slave headset to return to the normal data interaction mode, reducing the power consumption of the master headset and the slave headset after reducing one link, which will help reduce the burden on the equipment and improve the user experience.
  • the way to exit the monitoring confirmation mode is that the slave device is disconnected, the slave device is the slave headset, and the slave processing module of the slave headset exits the monitoring confirmation mode by disconnecting the communication link with the master processing module.
  • Disconnecting the communication link between the processing device and the main processing module can be achieved by increasing the distance between the slave earphone and the main earphone. Specifically, in use, the user removes the slave earphone to increase the distance between the slave earphone and the main earphone, or It is that the slave earphone is detached from the user’s ear due to other reasons.
  • the communication data of the main earphone can be retransmitted by the host device, such as the retransmission of the main earphone.
  • the main processing module keeps the original call or music playback.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Telephone Function (AREA)
  • Headphones And Earphones (AREA)

Abstract

本发明涉及蓝牙通信技术，具体涉及一种用于无线通信系统的设备通信方法及系统，方法包括S100让从设备建立对主设备与主机设备间通信的监路，S200从设备与主设备协商进入监听确认模式，监听链路进入监听确认模式，主设备与主机设备间进入监听确认模式，S300完成信息交互后从设备与主设备间的通信链路退出监听确认模式，系统包括搭载了蓝牙通信协议的主设备、从设备和主机设备。本发明减少一条链路能够降低主设备和从设备的功耗，对降低设备的负担开销都会有帮助，提高用户体验。

Description

一种用于无线通信系统的设备通信方法及系统 技术领域
本发明涉及蓝牙通信技术，具体涉及一种用于无线通信系统的设备通信方法及系统。
背景技术
无线通信通过无线电波、微波和红外线对多个节点间不经由导体或线缆传播的通信方式，无线通信技术包括蓝牙、Zig-Bee和Z-Wave等，目前，快生活节奏促进了用蓝牙技术实现语音信息交互技术的发展，蓝牙耳机就是利用蓝牙技术对语音信息交互的重要产品之一。
双无线蓝牙耳机包括两个耳机，两个耳机与播放主机设备(比如手机，平板，电脑等)组成一个无线通信系统，两个耳机同步播放主机设备的音乐或者进行通话。目前双无线蓝牙耳机的两个耳机间的通信实现方案包括以下几种：
第一种是：蓝牙耳机包括主耳机和副耳机，在进行蓝牙耳机的通信时，主机设备只和主耳机通信，主耳机与副耳机之间建立蓝牙通信链路，主耳机负责向副耳机转发主机设备的音乐或者通话数据。蓝牙耳机的这种通信方式的好处是：现有的蓝牙协议能够支持，缺点是主耳机即要和主机设备进行大量数据交互，还需要把大量数据转发给副耳机，主耳机的功耗会比副耳机大很多，另外副耳机的播放质量取决于主耳机。
第二种是：修改蓝牙A2DP协议，由主机设备分别与主耳机和副耳机建立两条A2DP链路，主机设备分别与主耳机和副耳机通信交互数据。这种方式的好处是比较省功耗，且主耳机与副耳机之间也没有相互影响，但是这种方式的缺点是主机设备与主耳机和副耳机的蓝牙协议都要做修改，适配性比较差，难以大规模推广。
第三种是：监听模式，副耳机监听主机设备发送给主耳机的数据包，再利用蓝牙时隙间隙回复ACK给主耳机，由ACK通知主耳机副耳机是否收到主机设备的数据包。这种方式的好处是副耳机只能给主耳机回复是否收到包，缺点是无法支持对于蓝牙链路管理协议(LMP，Link Manager Protocol)内容交互的监听，通过单纯监听是无法维持住监听链路的，主耳机还需要额外的一条BT链路或者BLE链路将主机设备和主耳机之间LMP内容的变化通知副耳机，这样在软件和硬件上就增加了额外的链路开销。
发明内容
本发明意在提供一种用于无线通信系统的设备通信方法，以让主机设备无需做任何修改，主耳机无需转发语音或者通话数据，且主耳机与副耳机之间无需长期维持一条额外的链路，实现耳机的低功耗和高适配性。
本方案中的用于无线通信系统的设备通信方法，包括以下步骤：
S100，让从设备建立对主设备与主机设备间通信的监听链路；
S200，从设备与主设备协商进入监听确认模式，从设备的监听链路进入监听确认模式，主设备与主机设备间进入监听确认模式，所述监听确认模式为主设备或从设备接收 主机设备发送的信息，主设备随后继续接收从设备发送的确认信息，根据两个设备的接收情况，主设备在下一个通信时隙回复主机设备；
S300，完成信息交互后从设备与主设备间的通信链路退出监听确认模式。
本方案的有益效果是：让从设备、主设备和主机设备间的通信进行监听确认模式，让从设备在通信时隙发送是否收到通信数据的确认信息，例如从设备作为蓝牙耳机的从耳机时收到手机作为主机设备发出的音乐数据包，从设备发送给作为蓝牙耳机的主耳机作为主设备的收到确认信息，主设备在下一通信时隙根据两个设备(主设备和从设备)的接收情况回复确认信息给主机设备，例如针对从设备发送的已收到音乐数据包发送的回复，或者针对从设备未收到音乐数据包发送的链路管理数据回复，当完成该数据交互后，从设备退出与主设备间的监听确认模式，在通信时隙进行数据传送时是根据通信时隙中主机设备和主设备之间数据包长度，有可能使得主机设备和主设备之间增加几个毫秒的重传，这几个毫秒的重传不会影响ACL异步链路的传输，该几个毫秒的延时相当与将主机设备和主设备之间的数据包传输延后到下一个通信时隙；主机设备和主设备同步链路传输时，主设备和从设备可仅进行短数据包交互，不影响同步链路，主设备与从设备间的链路管理数据的通信不需要一直占用一条单独的通信链路，相较于现有的蓝牙通信方式，减少一条链路能够降低主设备和从设备的功耗，对降低设备的负担开销都会有帮助，提高用户体验。
进一步，所述退出监听确认模式的方式为通过从设备与主设备间的蓝牙私有通信协议交互退出。
有益效果是：通过蓝牙通信协议交互退出，退出过程更平滑，主设备与从设备间同步性更好，退出监听确认模式不会影响主机设备和主设备间的通信，例如在退出监听确认模式时不会影响主设备播放音乐，但从设备播放音乐会受影响；例如对于通话，主设备和从设备都不受影响。
进一步，所述退出监听确认模式的方式为从设备掉线。
有益效果是：通过让从设备掉线的方式退出监听确认模式，让主设备能够重新接收通信数据，主设备的通话和播放音乐都不受影响。
进一步，所述信息交互包括长包数据和短包数据，所述长包数据包括链路管理数据，所述短包数据包括确认信息。
有益效果是：将信息交互以短包数据或长包数据进行发送，能够确保在通信时隙内完整地发送相应数据，减少占用通信时隙的长度。
进一步，所述回复信息在收到确认信息间隔一段时间后的通信时隙发送。
有益效果是：将回复信息在下一通信时隙发送，在发送了短包数据占用部分通信时隙后若再发送回复信息就会占用通信时隙，防止回复信息的长包数据占用通信时隙。
基于上述用于无线通信系统的设备通信方法的用于无线通信系统的设备通信系统，包括搭载了蓝牙通信协议的主设备、从设备和主机设备，所述主设备包括主处理模块，所述从设备包括从处理模块，所述从处理模块建立对主设备与主机设备的监听链路，所述从处理模块与主处理模块协商进入监听确认模式，所述监听链路进入监听确认模式，所述主处理模块与主机设备间进入监听确认模式，所述从处理模块在交互完信息后退出与主处理模块间通信链路的监听确认模式。
本方案的有益效果是：从设备的从处理模块与主设备的主处理模块协商进行监听 确认模式，例如蓝牙耳机的从耳机和主耳机内部的处理模块通过发送信息协商进入监听确认模式，然后在通信时隙内进行信息的交互，并在信息交互完成后退出监听确认模式，即主耳机与从耳机不会一直占用着一条通信链路进行信息交互，相对于现有的蓝牙通信方式来说减少一条链路，降低了主设备与从设备的功耗，降低设备负担开销，主设备和从设备的连续使用时间更长，用户体验度更好。
进一步，所述监听确认模式为在通信时隙内发送方发送确认信息并在下一通信时隙内接收回复方回复信息，所述确认信息的发送方包括从设备或主设备，所述回复信息的回复方包括主设备或从设备。
有益效果是：让主设备和从设备的每个交互信息在一个通信时隙内进行发送，不占用系统的通信时隙，例如不占用发送音乐数据包的发送时隙，不会造成干扰，也无需单独占用一条通信链路，主设备与从设备间的能耗一致。
进一步，所述从处理模块通过蓝牙私有通信协议交互退出与主处理模块间的监听确认模式。
有益效果是：通过协议交互退出，例如从处理模块向主处理模块发送一条退出信息，从处理设备和主处理设备就退出监听确认模式，无需暂停从处理设备和主处理设备间的通信，提高用户体验度。
进一步，所述从处理模块通过断开与主处理模块的通信链路来退出监听确认模式。
有益效果是：通过断开从处理设备与主处理设备间的通信链路来退出监听确认模式，在这种突然断开链路的情况下，能够让通信数据进行重传，如重传主处理设备播放的音乐数据包，保持主处理模块保持原有的通话或音乐播放。
附图说明
图1为本发明实施例一中用于无线通信系统的设备通信方法监听链路的流程图；
图2为本发明实施例一中用于无线通信系统的设备通信方法中主机设备作为发包端时主耳机和从耳机间无新数据传输的时隙图；
图3为本发明实施例一中用于无线通信系统的设备通信方法中主机设备作为发包端时主耳机发送新数据的时隙图；
图4为本发明实施例一中用于无线通信系统的设备通信方法中主机设备作为发包端时从耳机发送新数据的时隙图；
图5为本发明实施例一中用于无线通信系统的设备通信方法中主机设备作为收包端时主耳机和从耳机间无新数据传输的时隙图；
图6为本发明实施例一中用于无线通信系统的设备通信方法中主机设备作为收包端时主耳机发送新数据的时隙图；
图7为本发明实施例一中用于无线通信系统的设备通信方法中主机设备作为收包端时从耳机发送新数据的时隙图；
图8为本发明实施例一中用于无线通信系统的设备通信系统的原理性框图。
具体实施方式
下面通过具体实施方式进一步详细说明。
实施例一
用于无线通信系统的设备通信系统，如图8所示：包括搭载了蓝牙通信协议的主设备、从设备和主机设备，主设备为蓝牙耳机中的主耳机，从设备为蓝牙耳机中的从耳机，主设备包括主处理模块，从设备包括从处理模块，主处理模块和从处理模块可用现有CSR8645型号的蓝牙模块，主机设备可以是手机或电脑。
在用于无线通信系统的设备通信系统基础上的用于无线通信系统的设备通信方法，如图1所示，包括以下步骤：
S100，主设备通过主处理模块与主机设备间建立的通信链路定义为蓝牙链路一，即主耳机与手机间的通信链路为蓝牙链路一，主设备通过主处理模块与从设备的从处理模块间建立的通信链路定义为蓝牙链路二，主设备将蓝牙链路一的数据包通过蓝牙链路二发送给从设备，即主耳机将从手机接收到的数据包发送至从耳机，数据包包括链路管理信息，如主机设备蓝牙地址、时钟信息、跳频信息和加密密钥，让从设备建立对主设备与主机设备间通信的监听链路，将监听链路定义为蓝牙链路三，即从耳机通过监听链路以监听方式获取手机发送给主耳机的语音信息，如音乐或通话信息；
S200，从设备的从处理模块与主设备的主处理模块协商进入监听确认模式，即蓝牙链路二协商进入监听确认模式，从处理模块通过向主处理模块发送进入监听确认模式的数据包进行协商，例如从处理模块发送进入确认(ACK)信息至主处理模块，从设备的监听链路进入监听确认模式，即蓝牙链路一和蓝牙链路三进入监听确认模式，监听确认模式为通信时隙内发送方发送确认信息并在下一通信时隙内接收回复方回复信息，发送方可以是主设备或从设备，接收方可以是从设备或主设备；
S300，完成信息交互后从设备与主设备间的通信链路退出监听确认模式，本实施例一中，从处理模块通过蓝牙私有通信协议交互退出与主处理模块间的监听确认模式，例如可通过发送代表退出监听确认模式的信息进行。
上述步骤中的监听确认模式为在通信时隙内发送方发送确认信息并在下一通信时隙内接收回复方回复信息，确认信息包括是否收到通信数据或回复的短包数据，回复信息包括根据短包数据回复的短包数据或链路管理数据的长包数据。以主设备为主耳机、从设备为从耳机，主机设备作为发包端或收包端为例，该监听确认模式下的主设备、从设备和主机设备的几种通信情况如下：
(1)主机设备作为发包端，定义为Master，主耳机定义为Primary，从耳机定义为Secondary，主耳机与从耳机间只有短包交互
如图2所示，在蓝牙链路一中，当主耳机与从耳机没有长包交互时，主耳机与从耳机同步使能接收主机设备的数据包，数据包可以是主机设备发送音乐数据包，从耳机接收完毕数据包后，在间隔一定时间后，该间隔的时间可以为下一通信时隙，从耳机向主耳机回复短包，短包如确认收到数据包(ACK)或者未收到数据包(NACK)，主耳机根据收到短包的内容判断从耳机是否收到主机设备的数据包，然后在下一个蓝牙时隙，主耳机根据自身接收主机设备数据包的情况以及从耳机接收主机设备数据包的情况，回复ACK。
(2)主机设备作为发包端，定义为Master，主耳机定义为Primary，从耳机定义为 Secondary，主耳机与从耳机间有长包交互
如图3所示，主耳机与主机设备的数据交互过程中，当主耳机有长包要发送给从耳机时，长包可以包括链路管理数据，如主机设备蓝牙地址、时钟信息、跳频信息和加密密钥等，在主耳机和从耳机接收完成主机设备的数据包后，从耳机向主耳机回复短包通知主耳机收包情况，短包可以是ACK，主耳机在接收到从耳机的短包后，主耳机间隔一段时间向从耳机回复长包，从耳机在收到这个长包后再回复一个短包，确认收到上述长包。
如图4所示，主耳机与主机设备的数据交互过程中，当从耳机有长包要发送给主耳机时，在主耳机和从耳机接收完成主机设备的数据包后，从耳机发送长包给主耳机，主耳机根据收包内容实时检测是短包还是长包，主耳机检测到长包后延长接收窗口，完成长包的接收，随后主耳机回复短包(如ACK)给从耳机，确认收到上述长包。
(3)主机设备作为收包端，定义为Slave，主耳机定义为Primary，从耳机定义为Secondary，主耳机与从耳机间短包交互
如图5所示，在蓝牙链路一中，从耳机忽略主耳机发送给主机设备的数据包，当主机设备开始发送数据包时，从耳机使能接收，当主耳机和从耳机之间没有长包交互需求时，从耳机接收完毕主机设备的数据包后，从耳机发送短包给主耳机，主耳机接收完主机设备的数据包后，主耳机立即使能接收从耳机的短包，主耳机根据短包内容判断短包还是长包，以及从耳机收包情况，以决定后续回复主机设备确认信息(ACK)。
(4)主机设备作为收包端，定义为Slave，主耳机定义为Primary，从耳机定义为Secondary，主耳机与从耳机间长包交互
如图6所示，在主机设备和主耳机的交互过程中，当主耳机有长包要发送给从耳机时，和主机设备作为发包端的情况类似，在主耳机和从耳机接收完主机设备的数据包后，先由从耳机发送短包给主耳机，再由主耳机发送长包给从耳机，最后从耳机回复确认信息(ACK)，确认收到上述长包。
如图7所示，在主机设备和主耳机的交互过程中，当从耳机有长包要发送给主耳机时，主耳机和从耳机正确收到主机设备的数据包后，从耳机直接发送长包给主耳机，主耳机收完主机设备的数据包，立刻开始检测接收到的长包，主耳机收到从耳机发送的长包后回复确认信息(ACK)，确认收到上述长包。
上述内容所提到的附图中，图中的“M2S”和“S2M”是指“主机设备与主设备间的数据交互”，图中的“P2S”、“2P”和“2S”是指“主设备与从设备间的数据交互”，其中的代号“2”表示“to”，如“2P”表示“发送至主设备的信息”，“2S”表示“发送至从设备的信息”，“RXEN”是指主机设备发送的数据包。
本实施例一通过让从耳机通过监听确认模式在通信时隙对链路管理信息进行传送，取消了现有技术中专门传送链路管理信息的链路，并在完成相应链路管理信息传送后通过私有协议退出监听确认模式，让主耳机和从耳机恢复正常的数据交互模式，减少一条链路后降低主耳机和从耳机的功耗，对降低设备的负担开销都会有帮助，提高用户体验。
实施例二
与实施例一的区别在于，退出监听确认模式的方式为从设备掉线，从设备即从耳机，从耳机的从处理模块通过断开与主处理模块的通信链路来退出监听确认模式，从处理设备断开与主处理模块的通信链路可以通过增大从耳机与主耳机间的距离来实现，具体在 使用时就是用户取下从耳机实现增大从耳机与主耳机间的距离，或者是从耳机因其他原因脱离开用户耳朵处，在这种突然断开从耳机与主耳机通信链路的情况下，能够让主耳机的通信数据由主机设备进行重传，如重传主耳机正在播放的音乐数据包，保持主处理模块保持原有的通话或音乐播放。
以上所述的仅是本发明的实施例，方案中公知的具体结构及特性等常识在此未作过多描述。应当指出，对于本领域的技术人员来说，在不脱离本发明结构的前提下，还可以作出若干变形和改进，这些也应该视为本发明的保护范围，这些都不会影响本发明实施的效果和专利的实用性。本申请要求的保护范围应当以其权利要求的内容为准，说明书中的具体实施方式等记载可以用于解释权利要求的内容。

Claims (9)

  1. 一种用于无线通信系统的设备通信方法，其特征在于，包括以下步骤：
    S100，让从设备建立对主设备与主机设备间通信的监听链路；
    S200，从设备与主设备协商进入监听确认模式，从设备的监听链路进入监听确认模式，主设备与主机设备间进入监听确认模式，所述监听确认模式为主设备或从设备接收主机设备发送的信息，主设备随后继续接收从设备发送的确认信息，根据两个设备的接收情况，主设备在下一个通信时隙回复主机设备；
    S300，完成信息交互后从设备与主设备间的通信链路退出监听确认模式。
  2. 根据权利要求1所述的用于无线通信系统的设备通信方法，其特征在于：所述退出监听确认模式的方式为通过从设备与主设备间的蓝牙私有通信协议交互退出。
  3. 根据权利要求1所述的用于无线通信系统的设备通信方法，其特征在于：所述退出监听确认模式的方式为从设备掉线。
  4. 根据权利要求1所述的用于无线通信系统的设备通信方法，其特征在于：所述信息交互包括长包数据和短包数据，所述长包数据包括链路管理数据，所述短包数据包括确认信息。
  5. 根据权利要求4所述的用于无线通信系统的设备通信方法，其特征在于：所述回复信息在收到确认信息间隔一段时间后的通信时隙发送。
  6. 用于无线通信系统的设备通信系统，包括搭载了蓝牙通信协议的主设备、从设备和主机设备，所述主设备包括主处理模块，所述从设备包括从处理模块，其特征在于：所述从处理模块建立对主设备与主机设备的监听链路，所述从处理模块与主处理模块协商进入监听确认模式，所述监听链路进入监听确认模式，所述主处理模块与主机设备间进入监听确认模式，所述从处理模块在交互完信息后退出与主处理模块间通信链路的监听确认模式。
  7. 根据权利要求1所述的用于无线通信系统的设备通信系统，其特征在于：所述监听确认模式为在通信时隙内发送方发送确认信息并在下一通信时隙内接收回复方回复信息，所述确认信息的发送方包括从设备或主设备，所述回复信息的回复方包括主设备或从设备。
  8. 根据权利要求1所述的用于无线通信系统的设备通信系统，其特征在于：所述从处理模块通过蓝牙私有通信协议交互退出与主处理模块间的监听确认模式。
  9. 根据权利要求1所述的用于无线通信系统的设备通信系统，其特征在于：所述从处理模块通过断开与主处理模块的通信链路来退出监听确认模式。
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