WO2020233349A1 - 信令传输、接收方法及装置、存储介质、终端 - Google Patents

信令传输、接收方法及装置、存储介质、终端 Download PDF

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Publication number
WO2020233349A1
WO2020233349A1 PCT/CN2020/086938 CN2020086938W WO2020233349A1 WO 2020233349 A1 WO2020233349 A1 WO 2020233349A1 CN 2020086938 W CN2020086938 W CN 2020086938W WO 2020233349 A1 WO2020233349 A1 WO 2020233349A1
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Prior art keywords
signaling
indication signaling
duration
transmission
data packet
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PCT/CN2020/086938
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English (en)
French (fr)
Inventor
赵育仁
徐彦超
余庆华
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展讯通信（上海）有限公司
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Application filed by 展讯通信（上海）有限公司 filed Critical 展讯通信（上海）有限公司
Priority to EP20809653.7A priority Critical patent/EP3975643A4/en
Priority to US16/959,776 priority patent/US11570661B2/en
Publication of WO2020233349A1 publication Critical patent/WO2020233349A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/06—Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information
    • 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
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0006—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission format
    • H04L1/0007—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission format by modifying the frame length
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • 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
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0015—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the adaptation strategy
    • H04L1/0017—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the adaptation strategy where the mode-switching is based on Quality of Service requirement
    • H04L1/0018—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the adaptation strategy where the mode-switching is based on Quality of Service requirement based on latency requirement
    • 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
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/10—Flow control; Congestion control
    • H04L47/24—Traffic characterised by specific attributes, e.g. priority or QoS
    • H04L47/2416—Real-time traffic
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/10—Flow control; Congestion control
    • H04L47/28—Flow control; Congestion control in relation to timing considerations
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/70—Admission control; Resource allocation
    • H04L47/80—Actions related to the user profile or the type of traffic
    • H04L47/801—Real time traffic
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/10—Flow control between communication endpoints
    • H04W28/12—Flow control between communication endpoints using signalling between network elements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
    • H04W48/10—Access restriction or access information delivery, e.g. discovery data delivery using broadcasted information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
    • H04W48/12—Access restriction or access information delivery, e.g. discovery data delivery using downlink control channel
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0446—Resources in time domain, e.g. slots or frames
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/51—Allocation or scheduling criteria for wireless resources based on terminal or device properties
    • H04W72/512—Allocation or scheduling criteria for wireless resources based on terminal or device properties for low-latency requirements, e.g. URLLC
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/10—Small scale networks; Flat hierarchical networks
    • H04W84/12—WLAN [Wireless Local Area Networks]

Definitions

  • the present invention relates to the field of communication technology, in particular to a signaling transmission and reception method and device, storage medium, and terminal.
  • Real-time application (RTA) in Wi-Fi devices has gradually become a technological development trend.
  • One of the key factors for the success of the real-time application transmission is the time delay.
  • the current 802.11 Institute of Electrical and Electronics Engineers 802.11 (IEEE 802.11) standards (for example, the Wireless Local Area Network (WLAN) standard) cannot guarantee the worst-case delay.
  • the technical problem solved by the present invention is how to shorten the time delay in the WLAN system to meet the RTA communication requirements and realize real-time application communication.
  • an embodiment of the present invention provides a signaling transmission method, which includes: configuring indication signaling when the optimization setting for transmitting real-time application data packets is supported, and the indication signaling is used to instruct a WLAN station based on data Packet duration restriction and/or transmission opportunity duration restriction to transmit data packets; sending the indication signaling.
  • the sending the indication signaling includes: using a beacon frame to send the indication signaling.
  • the sending the indication signaling includes: using a broadcast packet to send the indication signaling.
  • the sending the indication signaling includes: sending the indication signaling by using a unicast packet in a handshake interaction process.
  • the indication signaling when the indication signaling includes the duration limit of the data packet, the indication signaling further includes the maximum duration of the data packet.
  • the signaling transmission method further includes: sending transmission opportunity duration extension signaling after sending the indication signaling including the transmission opportunity duration limitation.
  • an embodiment of the present invention also provides a signaling receiving method, including: receiving indication signaling, the indication signaling is used to instruct the WLAN station to transmit data packets based on the packet duration restriction and/or the transmission opportunity duration restriction
  • the indication signaling is configured when the WLAN access point supports optimized settings for transmitting real-time application data packets; according to the indication signaling, the transmission duration of the data packet is set to meet the packet duration restriction and/or transmission Opportunity duration limit.
  • the receiving indication signaling includes: receiving the indication signaling by using a beacon frame.
  • the receiving indication signaling includes: receiving the indication signaling by using a broadcast packet.
  • the receiving indication signaling includes: receiving the indication signaling by using a unicast packet in a handshake interaction process.
  • the indication signaling when the indication signaling includes the duration limit of the data packet, the indication signaling further includes the maximum duration of the data packet.
  • the method for receiving signaling further includes: receiving the transmission opportunity duration extension signaling after receiving the indication signaling including the transmission opportunity duration restriction.
  • an embodiment of the present invention also provides a signaling transmission device, including: a configuration module, when the optimization setting for transmitting real-time application data packets is supported, the configuration module is adapted to configure indication signaling, The indication signaling is used to instruct the WLAN station to transmit data packets based on the data packet duration restriction and/or the transmission opportunity duration restriction; the sending module is adapted to send the indication signaling.
  • an embodiment of the present invention also provides a signaling receiving device, including: a receiving module, adapted to receive indication signaling, the indication signaling is used to instruct the WLAN station based on packet time limit and/or transmission opportunity Time limit for transmitting data packets, the indication signaling is configured when the WLAN access point supports the optimal setting of transmitting real-time application data packets; the setting module is adapted to set the transmission time length of the data packet according to the indication signaling Satisfy the grouping time limit and/or the transmission opportunity time limit.
  • embodiments of the present invention also provide a storage medium on which computer instructions are stored, and the computer instructions execute the steps of the above method when the computer instructions are executed.
  • an embodiment of the present invention also provides a terminal, including a memory and a processor, the memory stores computer instructions that can run on the processor, and when the processor runs the computer instructions Perform the steps of the above method.
  • the embodiment of the present invention provides a signaling transmission method, which includes: when supporting optimized settings for transmitting real-time application packets, setting a packet duration limit and/or a transmission opportunity duration limit; sending indication signaling, the indication signaling being used for Instruct the WLAN station to restrict the transmission of data packets based on the packet duration restriction and/or the transmission opportunity duration.
  • the device can transmit data packets meeting the packet duration restriction or shorten the data packet transmission duration meeting the transmission opportunity duration restriction, thereby avoiding data Packets occupy air interface time for a long time, which is beneficial to reduce the delay and provide a feasible solution for transmitting RTA packets.
  • the signaling transmission method further includes: sending the transmission opportunity duration extension signaling after sending the indication signaling including the transmission opportunity duration restriction.
  • the WLAN station that supports the packet duration limitation is not limited to the shortened transmission opportunity, can restore the transmission opportunity duration used in traditional WLAN communication, and is beneficial to increase the data transmission rate.
  • FIG. 1 is a schematic flowchart of a signaling transmission method according to an embodiment of the present invention
  • FIG. 2 is a schematic flowchart of a method for receiving signaling according to an embodiment of the present invention
  • FIG. 3 is a schematic flowchart of a specific implementation of the embodiment shown in FIG. 1;
  • FIG. 4 is a schematic structural diagram of a signaling transmission device according to an embodiment of the present invention.
  • Fig. 5 is a schematic structural diagram of a signaling receiving apparatus according to an embodiment of the present invention.
  • Wi-Fi transmission solution provided by the prior art cannot guarantee the worst-case delay and cannot well support RTA applications.
  • the inventor of the present application discovered through research that although there are many reasons for the extension of the Wi-Fi transmission time, one of the reasons is that the air time of the packet duration of the data packet is too long. In order to transmit RTA data packets on time and realize RTA communication, the data packet duration should not last too long.
  • the embodiment of the present invention provides a signaling transmission method, which includes: when supporting optimized settings for transmitting real-time application packets, setting a packet duration limit and/or a transmission opportunity duration limit; sending indication signaling, the indication signaling being used for Instruct the WLAN station to restrict the transmission of data packets based on the packet duration restriction and/or the transmission opportunity duration.
  • the device can transmit data packets meeting the packet duration restriction or data packets with reduced transmission duration meeting the transmission opportunity duration restriction, thereby avoiding Data packets occupy air interface time for a long time, which is beneficial to reduce time delay and provide a feasible solution for transmitting RTA packets.
  • Fig. 1 is a schematic flowchart of a signaling transmission method according to an embodiment of the present invention.
  • the signaling transmission method may be executed by a WLAN access point (Access Point, AP for short).
  • the signaling transmission method may include the following steps:
  • Step S101 when supporting the optimized settings for transmitting real-time application packets, configure indication signaling, where the indication signaling is used to instruct the WLAN station to limit the transmission of data packets based on the data packet duration restriction and/or the transmission opportunity duration;
  • Step S102 Send the indication signaling.
  • the AP and the station can use the same identification code to form a Basic Service Set (BSS for short).
  • the terminals in the BSS can communicate based on the same Service Set Identifier (SSID for short).
  • step S101 if the AP supports the optimization setting for transmitting real-time application data packets in the BSS, the data packet time limit and/or the transmission opportunity (TXOP) time limit can be set to shorten the data packets to be transmitted.
  • Limit the longest transmission time occupied by the data packet air interface. It should be noted that the longest transmission duration of a data packet that meets the packet duration limit is less than the allowable maximum transmission duration of a data packet generated by a traditional WLAN site, and the longest transmission duration of a data packet that meets the TXOP duration limit is less than The maximum allowable transmission duration of data packets generated by a traditional WLAN site.
  • the AP may configure indication signaling, which may include information related to the data packet duration restriction and or TXOP duration restriction, and is used to instruct the WLAN station to transmit data packets based on the data packet duration restriction or TXOP duration restriction.
  • the data packet may be a data packet that is generated by the WLAN station after receiving the indication signaling and that satisfies the data packet duration limit or the TXOP duration limit.
  • step S102 the AP may send the indication signaling.
  • the AP may place the indication signaling in a beacon frame and send it periodically. If the indication signaling includes the data packet duration limitation, the indication signaling may also indicate the transmission duration of the data packet.
  • the AP may use broadcast packets to send the indication signaling. If the indication signaling includes the data packet duration limitation, the indication signaling may also indicate the transmission duration of the data packet.
  • the AP may use unicast packets in the handshake interaction process to send the indication signaling. If the indication signaling includes the data packet duration limitation, the indication signaling may also indicate the transmission duration of the data packet.
  • the maximum duration of the data packet may be predefined by the protocol.
  • the indication signaling may not indicate the maximum duration of the data packet.
  • the indication signaling configured by the AP may only be used to instruct the WLAN station to transmit the data packet based on the TXOP duration restriction.
  • the indication signaling may only be used to instruct the receiving terminal to transmit the data based on the data packet duration limitation package.
  • the AP that supports the requester of RTA data packet transmission can pass the instruction Signaling instructs a station that supports the data packet duration restriction to transmit the data packet based on the data packet duration restriction. It is indicated through the indication signaling that the terminal that does not support the data packet duration restriction is to transmit the data packet based on the TXOP duration restriction.
  • the AP that supports the RTA data packet sending demander can send the indication signaling containing the data packet duration limit, so that the terminal that receives the data packet duration limit can send based on the data packet duration limit The data packet.
  • the longest allowable air interface occupation time of the data packet is shorter.
  • both the terminal that supports the data packet duration restriction and the terminal that does not support the data packet duration restriction can decode the indication signaling containing the TXOP duration restriction, the instruction containing the TXOP duration restriction is received.
  • the signaling terminal may use the TXOP duration to limit the transmission of data packets whose allowable longest air interface occupation time is shorter than the longest allowable air interface occupation time of traditional data packets.
  • a terminal that satisfies the data packet duration limit for data transmission and supports the data packet duration limit can also decode to obtain a shorter TXOP duration limit, and therefore will also be limited by the shorter TXOP duration limit .
  • This may reduce the data transmission efficiency of the terminal supporting the data packet duration limit. Therefore, the AP may send TXOP duration extension signaling after sending the indication signaling including the transmission opportunity duration limitation, so that the terminal that supports the data packet duration limitation can deviate from the shorter TXOP duration limitation, It is no longer limited by the shorter TXOP duration limit, thereby helping to improve the system performance of the terminal that supports the data packet duration limit.
  • the TXOP duration extension signaling may be a set of longer TXOP duration restriction indication signaling, and it is transmitted in a transmission mode that can be recognized by a terminal that only supports the data packet duration restriction.
  • Fig. 2 is a schematic flowchart of a method for receiving signaling according to an embodiment of the present invention.
  • the signaling receiving method may be executed by a WLAN station.
  • the signaling receiving method may include the following steps:
  • Step S201 Receive indication signaling, the indication signaling is used to instruct the WLAN station to transmit data packets based on the packet duration restriction and/or the transmission opportunity duration restriction, and the indication signaling is for the WLAN access point to support the transmission of real-time application data packets Configured during optimization settings;
  • Step S202 According to the indication signaling, set the transmission duration of the data packet to meet the packet duration restriction and/or transmission opportunity duration restriction.
  • the WLAN station may receive the indication signaling.
  • the indication signaling is sent by the AP, and may be used to instruct the WLAN station to limit the transmission of data packets based on the packet duration restriction and/or the transmission opportunity duration.
  • the indication signaling may be configured when the AP supports optimized settings for transmitting real-time application data packets.
  • the AP may use a beacon frame to send the indication instruction
  • the WLAN station may use the beacon frame to receive the indication signaling.
  • the AP may use a broadcast packet to send the indication signaling
  • the WLAN station may use the broadcast packet to receive the indication signaling
  • the AP may use unicast packets in the handshake interaction process to send the indication signaling, and the WLAN station may use the unicast packets to receive the indication signaling.
  • the indication signaling may also indicate the maximum duration of the data packet.
  • the maximum duration of the data packet may be predefined by the protocol and does not need to be transmitted.
  • An AP that supports a requester for sending RTA data packets may send TXOP duration extension signaling after sending the indication signaling containing the TXOP duration limitation.
  • the WLAN station that supports the data packet duration limitation may receive and decode the TXOP duration extension signaling after receiving the indication signaling containing the TXOP duration limitation to use a longer TXOP for data transmission.
  • the TXOP duration extension signaling may be a set of longer TXOP duration restriction indication signaling, and it is transmitted in a transmission mode that can be recognized by a terminal that only supports the data packet duration restriction. Specific examples are described below.
  • the data packet duration limit can be limited by a beacon frame, broadcast packet or a predefined manner.
  • the protocol that supports the data packet time limit and the terminal manufactured according to the protocol can comply with the data packet time limit.
  • the TXOP duration limitation can be used to limit the data packet duration.
  • a short TXOP duration restriction that is shorter than the current TXOP duration is used to limit the longest air interface occupation duration of the transmitted data packet.
  • the short TXOP duration limitation will affect network performance. For a WLAN station that supports the data packet duration restriction, there is no need to limit the air interface occupation duration of the transmitted data packet based on the short TXOP duration restriction. However, since the WLAN station that supports the data packet duration limit is capable of decoding and knowing the information of the short TXOP duration limit, under this condition, the WLAN station that supports the data packet duration limit can be set Long TXOP duration restriction, the long TXOP duration restriction may be carried by the TXOP duration extension signaling to notify WLAN stations that support the data packet duration restriction to adopt the long TXOP duration restriction to extend the transmission opportunity duration.
  • the TXOP duration extension signaling may be a set of longer TXOP duration restriction indication signaling, and it is transmitted in a transmission mode that can be recognized by a terminal that only supports the data packet duration restriction.
  • Fig. 3 is a schematic flowchart of a specific implementation of the embodiment shown in Fig. 1.
  • a traditional signaling format (legacy format) may be used by the AP to send indication signaling including the short TXOP duration limit for use by the traditional WLAN station.
  • a new format (new format) may be used to send the indication signaling including the long TXOP duration limitation, so that the WLAN station that supports the data packet duration limitation sets the TXOP duration based on the long TXOP duration limitation.
  • the traditional WLAN station cannot decode the new signaling format. Therefore, even if the traditional WLAN station receives the indication signaling carried by the new signaling format, the traditional WLAN station can still use the short TXOP duration Restrict data sending and receiving.
  • the indication signaling including the TXOP duration limitation may be located in the control frame and represented by the additional TXOP limitation information field.
  • the WLAN station that supports the data packet duration restriction can interpret the TXOP duration restriction in the additional TXOP restriction information field.
  • steps S201 to S202 can be regarded as execution steps that correspond to the steps S101 to S102 in the embodiment shown in FIG. 1, and the two are complementary in terms of specific implementation principles and logic. . Therefore, for the signaling receiving method and terminology of the WLAN station, reference may be made to the related description of the embodiment shown in FIG. 1, which will not be repeated here.
  • the technical solution provided by the embodiments of the present invention can avoid data packets occupying air interface time for a long time based on the packet duration restriction and/or transmission opportunity duration restriction, which is beneficial to reduce the delay and provides a feasible solution for the transmission of RTA packets. .
  • Fig. 4 is a schematic structural diagram of a signaling transmission device according to an embodiment of the present invention.
  • the signaling transmission device 4 may be applied to the side of the WLAN access point to implement the method and technical solutions of the embodiments shown in FIG. 1 and FIG. 3.
  • the signaling transmission device 4 may include: a configuration module 41, which is suitable for configuring indication signaling when it supports optimized settings for the transmission of real-time application data packets, and the indication signaling is used to instruct the WLAN station based on data Packet duration restriction and/or transmission opportunity duration restriction to transmit data packets; the sending module 42 is adapted to send the indication signaling.
  • a configuration module 41 which is suitable for configuring indication signaling when it supports optimized settings for the transmission of real-time application data packets, and the indication signaling is used to instruct the WLAN station based on data Packet duration restriction and/or transmission opportunity duration restriction to transmit data packets
  • the sending module 42 is adapted to send the indication signaling.
  • the sending module 42 may include a first sending sub-module 421, which is adapted to send the indication signaling by using a beacon frame.
  • the sending module 42 may include a second sending sub-module 422, which is adapted to send the indication signaling by using a broadcast packet.
  • the indication signaling when the indication signaling includes the time limit of the data packet, the indication signaling may also include the maximum duration of the data packet.
  • the sending module 42 may include a third sending sub-module 423, which is adapted to send the indication signaling by using unicast packets in the handshake interaction process.
  • Fig. 5 is a schematic structural diagram of a signaling receiving apparatus according to an embodiment of the present invention.
  • the signaling receiving device 5 may implement the method and technical solution shown in FIG. 2 and be executed by the WLAN station.
  • the signaling receiving device 5 may include: a receiving module 51 adapted to receive indication signaling, the indication signaling used to instruct the WLAN station to transmit data packets based on the packet duration restriction and/or the transmission opportunity duration restriction,
  • the indication signaling is configured when the WLAN access point supports optimized settings for the transmission of real-time application data packets;
  • the setting module 52 is adapted to set the transmission duration of the data packet to meet the packet duration according to the indication signaling Restrictions and/or transmission opportunity duration restrictions.
  • the receiving module 51 may include: a first receiving submodule 511, adapted to receive the indication signaling by using a beacon frame.
  • the receiving module 51 may include: a second receiving submodule 512, adapted to receive the indication signaling by using broadcast packets.
  • the indication signaling when the indication signaling includes the time limit of the data packet, the indication signaling may also include the maximum duration of the data packet.
  • the receiving module 51 may include: a third receiving submodule 513, adapted to receive the indication signaling by using unicast packets in the handshake interaction process.
  • the embodiment of the present invention also discloses a storage medium on which computer instructions are stored, and when the computer instructions are run, the method and technical solutions described in the embodiments shown in FIGS. 1 to 3 are executed.
  • the storage medium may include a computer-readable storage medium such as a non-volatile (non-volatile) memory or a non-transitory (non-transitory) memory.
  • the computer-readable storage medium may include ROM, RAM, magnetic disk or optical disk, etc.
  • an embodiment of the present invention also discloses a terminal, including a memory and a processor, the memory stores computer instructions that can run on the processor, and the processor executes the above diagram when the computer instructions are executed.
  • the terminal may be a WLAN AP or a WLAN station.

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Abstract

一种信令传输、接收方法及装置、存储介质、终端，所述信令传输方法包括：当支持传输实时应用数据分组的优化设定时，配置指示信令，所述指示信令用于指示WLAN站点基于数据分组时长限制和/或传输机会时长限制传输数据包；发送所述指示信令。通过本发明提供的技术方案，可以缩短时延，以满足实时应用通信需求。

Description

信令传输、接收方法及装置、存储介质、终端
本申请要求于2019年5月23日提交中国专利局、申请号为201910435235.6、发明名称为“信令传输、接收方法及装置、存储介质、终端”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，具体地涉及一种信令传输、接收方法及装置、存储介质、终端。
背景技术
Wi-Fi设备中的实时应用(Real time application，简称RTA)逐渐成为技术发展趋势。该实时应用传输成功与否的关键因素之一在于时延。
当前电气和电子工程师协会802.11 Institute of Electrical and Electronics Engineers 802.11，简称IEEE802.11)标准(例如，无线局域网(Wireless Local Area Network，简称WLAN)标准)，无法保证最差情况下的时延。
发明内容
本发明解决的技术问题是在WLAN系统中，如何缩短时延，以满足RTA通信需求，实现实时应用通信。
为解决上述技术问题，本发明实施例提供一种信令传输方法，包括：当支持传输实时应用数据分组的优化设定时，配置指示信令，所 述指示信令用于指示WLAN站点基于数据分组时长限制和/或传输机会时长限制传输数据包；发送所述指示信令。
可选的，所述发送所述指示信令包括：采用信标帧发送所述指示信令。
可选的，所述发送所述指示信令包括：采用广播分组发送所述指示信令。
可选的，所述发送所述指示信令包括：采用握手交互过程中的单播分组发送所述指示信令。
可选的，当所述指示信令包含所述数据分组时长限制时，所述指示信令还包含所述数据分组的最大持续时长。
可选的，所述的信令传输方法还包括：在发送包含所述传输机会时长限制的指示信令之后，发送传输机会时长延展信令。
为解决上述技术问题，本发明实施例还提供一种信令接收方法，包括：接收指示信令，所述指示信令用于指示WLAN站点基于分组时长限制和/或传输机会时长限制传输数据包，所述指示信令是WLAN接入点支持传输实时应用数据分组的优化设定时配置的；根据所述指示信令，设置所述数据包的传输时长满足所述分组时长限制和/或传输机会时长限制。
可选的，所述接收指示信令包括：采用信标帧接收所述指示信令。
可选的，所述接收指示信令包括：采用广播分组接收所述指示信令。
可选的，所述接收指示信令包括：采用握手交互过程中的单播分组接收所述指示信令。
可选的，当所述指示信令包含所述数据分组时长限制时，所述指示信令还包含所述数据分组的最大持续时长。
可选的，所述信令接收方法还包括：在接收包含所述传输机会时 长限制的指示信令之后，接收传输机会时长延展信令。
为解决上述技术问题，本发明实施例还提供一种信令传输装置，包括：配置模块，当支持传输实时应用数据分组的优化设定时，所述配置模块适于配置指示信令，所述指示信令用于指示WLAN站点基于数据分组时长限制和/或传输机会时长限制传输数据包；发送模块，适于发送所述指示信令。
为解决上述技术问题，本发明实施例还提供一种信令接收装置，包括：接收模块，适于接收指示信令，所述指示信令用于指示WLAN站点基于分组时长限制和/或传输机会时长限制传输数据包，所述指示信令是WLAN接入点支持传输实时应用数据分组的优化设定时配置的；设置模块，适于根据所述指示信令，设置所述数据包的传输时长满足所述分组时长限制和/或传输机会时长限制。
为解决上述技术问题，本发明实施例还提供一种存储介质，其上存储有计算机指令，所述计算机指令运行时执行上述方法的步骤。
为解决上述技术问题，本发明实施例还提供一种终端，包括存储器和处理器，所述存储器上存储有可在所述处理器上运行的计算机指令，所述处理器运行所述计算机指令时执行上述方法的步骤。
与现有技术相比，本发明实施例的技术方案具有以下有益效果：
本发明实施例提供一种信令传输方法，包括：当支持传输实时应用分组的优化设定时，设置分组时长限制和/或传输机会时长限制；发送指示信令，所述指示信令用于指示WLAN站点基于分组时长限制和/或传输机会时长限制传输数据包。通过本发明实施例设置的分组时长限制和/或传输机会时长限制，可以使得设备传输满足所述分组时长限制的数据分组或满足所述传输机会时长限制的传输时长缩短数据分组，从而可以避免数据分组长时间占用空口时间，有利于降低时延，为传输RTA分组提供可行方案。
进一步，所述信令传输方法还包括：在发送包含所述传输机会时 长限制的指示信令之后，发送传输机会时长延展信令。本发明实施例通过所述传输机会延展信令，可以使得支持所述分组时长限制的WLAN站点不受限于缩短的传输机会，能够恢复传统WLAN通信采用的传输机会时长，利于提高数据传输速率。
附图说明
图1是本发明实施例的一种信令传输方法的流程示意图；
图2是本发明实施例的一种信令接收方法的流程示意图；
图3是图1所示实施例的一种具体实施方式的流程示意图；
图4是本发明实施例的一种信令传输装置的结构示意图；
图5是本发明实施例的一种信令接收装置的结构示意图。
具体实施方式
本领域技术人员理解，现有技术提供的Wi-Fi传输方案，无法保证最差情况下的时延，无法良好的支持RTA应用。
本申请发明人经研究发现，尽管Wi-Fi传输时延长的原因有多种，但其中一个原因在于数据分组持续时长(packet duration)的空口时间(air time)过长。为了能够按时传输RTA数据分组，实现RTA通信，数据分组时长就不应持续过久。
本发明实施例提供一种信令传输方法，包括：当支持传输实时应用分组的优化设定时，设置分组时长限制和/或传输机会时长限制；发送指示信令，所述指示信令用于指示WLAN站点基于分组时长限制和/或传输机会时长限制传输数据包。通过本发明实施例设置的分组时长限制和/或传输机会时长限制，可以使得设备传输满足所述分组时长限制的数据分组或满足所述传输机会时长限制的传输时长缩短的数据分组，从而可以避免数据分组长时间占用空口时间，有利于 降低时延，为传输RTA分组提供可行方案。
为使本发明的上述目的、特征和有益效果能够更为明显易懂，下面结合附图对本发明的具体实施例做详细的说明。
图1是本发明实施例的一种信令传输方法的流程示意图。所述信令传输方法可以由WLAN接入点(Access Point，简称AP)执行。具体而言，所述信令传输方法可以包括以下步骤：
步骤S101，当支持传输实时应用分组的优化设定时，配置指示信令，所述指示信令用于指示WLAN站点基于数据分组时长限制和/或传输机会时长限制传输数据包；
步骤S102，发送所述指示信令。
更具体而言，AP和站点(Station，简称STA)可以使用相同身份识别码形成基本服务集(Basic Service Set，简称BSS)。BSS内的终端可以基于相同的服务集标识符(Service Set Identifier，简称SSID)进行通信。
在步骤S101中，如果AP支持BSS内传输实时应用数据分组的优化设定，则可以设置数据分组时长限制和/或传输机会(Transmission Opportunity，简称TXOP)时长限制，从而缩短待传输的数据分组，限制数据分组空口占用的最长传输时长。需要说明的是，满足所述分组时长限制的数据分组的最长传输时长小于传统WLAN站点生成的数据分组可允许的最长传输时长，满足所述TXOP时长限制的数据分组的最长传输时长小于传统WLAN站点生成的数据分组可允许的最长传输时长。
之后，AP可以配置指示信令，所述指示信令可以包含所述数据分组时长限制和或TXOP时长限制的相关信息，用于指示WLAN站点基于数据分组时长限制或TXOP时长限制传输数据包。所述数据包可以是WLAN站点在接收到所述指示信令后，生成的满足数据分组时长限制或TXOP时长限制的数据包。
在步骤S102中，AP可以发送所述指示信令。
在一个实施例中，AP可以将所述指示信令置于信标(beacon)帧中，周期发送。如果所述指示信令包含所述数据分组时长限制，则所述指示信令还可以指示数据分组的传输时长。
在另一个实施例中，AP可以采用广播分组发送所述指示信令。如果所述指示信令包含所述数据分组时长限制，则所述指示信令还可以指示数据分组的传输时长。
在另一个实施例中，AP可以采用握手交互过程中的单播分组发送所述指示信令。如果所述指示信令包含所述数据分组时长限制，则所述指示信令还可以指示数据分组的传输时长。
本领域技术人员理解，在具体实施中，所述数据分组的最大持续时长可以是协议预先定义的，此时，所述指示信令可以不指示数据分组的最大持续时长。
本领域技术人员理解，在一个实施例中，如果BSS内仅包含传统WLAN站点，则AP配置的指示信令可以仅用于指示WLAN站点基于TXOP时长限制传输所述数据包。
在另一个实施例中，如果BSS内的终端(例如，站点和AP)都支持所述数据分组时长限制，则所述指示信令可以仅用于指示接收终端基于数据分组时长限制传输所述数据包。
在另一个实施例中，如果BSS内即有不支持所述数据分组时长限制的终端，也有支持所述数据分组时长限制的终端，则支持有RTA数据分组发送需求者的AP可以通过所述指示信令，指示支持所述数据分组时长限制的站点，基于所述数据分组时长限制传输所述数据包。通过所述指示信令指示不支持所述数据分组时长限制的终端，基于所述TXOP时长限制传输所述数据包。
在具体实施中，由于支持所述数据分组时长限制的终端，可以译码得知所述数据分组时长限制，但不支持所述数据分组时长限制的终 端无法译码出所述数据分组时长限制，因而，所述支持有RTA数据分组发送需求者的AP可以发送包含所述数据分组时长限制的指示信令，以使得接收到所述数据分组时长限制的终端，能够基于所述数据分组时长限制发送所述数据包。相较于传统数据包的空口占用时长，所述数据包可允许的最长空口占用时长较短。
进一步，由于支持所述数据分组时长限制的终端和不支持所述数据分组时长限制的终端均可以译码出包含所述TXOP时长限制的指示信令，因而接收到包含所述TXOP时长限制的指示信令的终端，可以采用所述TXOP时长限制传输可允许的最长空口占用时长短于传统数据包可允许的最长空口占用时长的数据包。
然而，采用满足所述数据分组时长限制进行数据传输，且支持所述数据分组时长限制的终端也可以译码得到较短的TXOP时长限制，因而也将受限于所述较短的TXOP时长限制。这可能降低所述支持所述数据分组时长限制的终端的数据传输效率。所以，AP可以在发送包含所述传输机会时长限制的指示信令之后，发送TXOP时长延展信令，以使得所述支持所述数据分组时长限制的终端可以脱离所述较短的TXOP时长限制，不再受限于所述较短的TXOP时长限制，从而利于提高所述支持所述数据分组时长限制的终端的系统性能。所述TXOP时长延展信令，可以是一组较长的TXOP时长限制的指示信令，采用仅支持所述数据分组时长限制的终端能识别的传输方式进行传输。
图2是本发明实施例的一种信令接收方法的流程示意图。所述信令接收方法可以由WLAN站点执行。
具体而言，所述信令接收方法可以包括以下步骤：
步骤S201，接收指示信令，所述指示信令用于指示WLAN站点基于分组时长限制和/或传输机会时长限制传输数据包，所述指示信令是WLAN接入点支持传输实时应用数据分组的优化设定时配置的；
步骤S202，根据所述指示信令，设置所述数据包的传输时长满足所述分组时长限制和/或传输机会时长限制。
更具体而言，在步骤S201中，WLAN站点可以接收指示信令。所述指示信令是AP发出的，可以用于指示WLAN站点基于分组时长限制和/或传输机会时长限制传输数据包。所述指示信令可以是AP支持传输实时应用数据分组的优化设定时配置的。
在一个实施例中，AP可以采用信标帧发送所述指示指令，所述WLAN站点可以采用所述信标帧接收所述指示信令。
在另一个实施例中，AP可以采用广播分组发送所述指示信令，所述WLAN站点可以采用所述广播分组接收所述指示信令。
在另一个实施例中，AP可以采用握手交互过程中的单播分组发送所述指示信令，所述WLAN站点可以采用所述单播分组接收所述指示信令。
本领域技术人员理解，在具体实施中，如果所述指示信令包含所述数据分组时长限制，则所述指示信令还可以指示所述数据分组的最大持续时长。作为一个变化例，所述数据分组的最大持续时长可以是协议预先定义的，无需传输。
本领域技术人员理解，在包含不支持所述数据分组时长限制的终端和支持所述数据分组时长限制的终端的BSS内，为有效避免降低支持所述数据分组时长限制的终端的数据传输效率，支持有RTA数据分组发送需求者的AP可以在发送包含所述TXOP时长限制的指示信令之后，发送TXOP时长延展信令。相应地，支持所述数据分组时长限制的WLAN站点可以在接收包含所述TXOP时长限制的指示信令之后，接收并译码所述TXOP时长延展信令，以采用较长的TXOP进行数据传输。
需要说明的是，尽管不支持所述数据分组时长限制的WLAN站点可以接收所述TXOP时长延展信令，但是所述WLAN站点可能因 无法译码所述TXOP时长延展信令，而丢弃所述TXOP时长延展信令。所述TXOP时长延展信令，可以是一组较长的TXOP时长限制的指示信令，采用仅支持所述数据分组时长限制的终端能识别的传输方式进行传输。下面以具体实施例进行阐述。
实施例一：
所述数据分组时长限制可以通过信标帧、广播分组或预定义方式进行限定。支持所述数据分组时长限制的协议以及依照该协议制造的终端，可以遵守所述数据分组时长限制。
实施例二：
对于不支持所述数据分组时长限制的WLAN站点，可以采用TXOP时长限制来限制数据分组时长。例如，采用短于当前TXOP时长的短TXOP时长限制，来限制传输的数据分组的最长空口占用时长。
需要说明的是，所述短TXOP时长限制会影响网络性能。对于支持所述数据分组时长限制的WLAN站点而言，是无需基于所述短TXOP时长限制来限制传输的数据分组的空口占用时长的。然而，由于支持所述数据分组时长限制的WLAN站点是有能力译码得知所述短TXOP时长限制的信息的，因而，在此条件下，可以为支持所述数据分组时长限制的WLAN站点设置长TXOP时长限制，该长TXOP时长限制可以由所述TXOP时长延展信令携带，以通知支持所述数据分组时长限制的WLAN站点采用该长TXOP时长限制，延长传输机会时长。所述TXOP时长延展信令，可以是一组较长的TXOP时长限制的指示信令，采用仅支持所述数据分组时长限制的终端能识别的传输方式进行传输。
图3是图1所示实施例的一种具体实施方式的流程示意图。参考图3，在具体实施中，可以通过AP采用传统信令格式(legacy format)发送包含所述短TXOP时长限制的指示信令，以供所述传统WLAN 站点使用。
之后，可以采用新型信令格式(new format)发送包含所述长TXOP时长限制的指示信令，以使支持所述数据分组时长限制的WLAN站点基于所述长TXOP时长限制设置TXOP时长。所述传统WLAN站点不能译码所述新型信令格式，因而，即使所述传统WLAN站点接收到所述新型信令格式承载的指示信令，所述传统WLAN站点仍然可以采用所述短TXOP时长限制进行数据收发。
在具体实施中，包含所述TXOP时长限制的指示信令可以位于控制帧中，由附加的TXOP限制信息字段表示。支持所述数据分组时长限制的WLAN站点可以译出所述附加的TXOP限制信息字段中的TXOP时长限制。
本领域技术人员理解，所述步骤S201至步骤S202可以视为与上述图1所示实施例所述步骤S101至步骤S102相呼应的执行步骤，两者在具体的实现原理和逻辑上是相辅相成的。因而，关于WLAN站点的信令接收方法以及术语可以参考图1所示实施例的相关描述，这里不再赘述。
由上，通过本发明实施例提供的技术方案，可以基于所述分组时长限制和/或传输机会时长限制，避免数据分组长时间占用空口时间，有利于降低时延，为传输RTA分组提供可行方案。
图4是本发明实施例的一种信令传输装置的结构示意图。所述信令传输装置4可以应用于WLAN接入点一侧，用于实施上述图1和图3所示实施例的方法技术方案。
具体而言，所述信令传输装置4可以包括：配置模块41，当支持传输实时应用数据分组的优化设定时，适于配置指示信令，所述指示信令用于指示WLAN站点基于数据分组时长限制和/或传输机会时长限制传输数据包；发送模块42，适于发送所述指示信令。
在具体实施中，所述发送模块42可以包括第一发送子模块421， 适于采用信标帧发送所述指示信令。
在具体实施中，所述发送模块42可以包括第二发送子模块422，适于采用广播分组发送所述指示信令。
在具体实施中，当所述指示信令包含所述数据分组时长限制时，所述指示信令还可以包含所述数据分组的最大持续时长。
在具体实施中，所述发送模块42可以包括第三发送子模块423，适于采用握手交互过程中的单播分组发送所述指示信令。
关于所述信令传输装置4的工作原理、工作方式的更多内容，可以参照上述图1和图3中的相关描述，这里不再赘述。
图5是本发明实施例的一种信令接收装置的结构示意图。所述信令接收装置5可以实施图2所示方法技术方案，由WLAN站点执行。
具体而言，所述信令接收装置5可以包括：接收模块51，适于接收指示信令，所述指示信令用于指示WLAN站点基于分组时长限制和/或传输机会时长限制传输数据包，所述指示信令是WLAN接入点支持传输实时应用数据分组的优化设定时配置的；设置模块52，适于根据所述指示信令，设置所述数据包的传输时长满足所述分组时长限制和/或传输机会时长限制。
在具体实施中，所述接收模块51可以包括：第一接收子模块511，适于采用信标帧接收所述指示信令。
在具体实施中，所述接收模块51可以包括：第二接收子模块512，适于采用广播分组接收所述指示信令。
在具体实施中，当所述指示信令包含所述数据分组时长限制时，所述指示信令还可以包含所述数据分组的最大持续时长。
在具体实施中，所述接收模块51可以包括：第三接收子模块513，适于采用握手交互过程中的单播分组接收所述指示信令。
关于所述信令接收装置5的工作原理、工作方式的更多内容，可 以参照上述图2中的相关描述，这里不再赘述。
进一步地，本发明实施例还公开一种存储介质，其上存储有计算机指令，所述计算机指令运行时执行上述图1至图3所示实施例中所述方法技术方案。优选地，所述存储介质可以包括诸如非挥发性(non-volatile)存储器或者非瞬态(non-transitory)存储器等计算机可读存储介质。所述计算机可读存储介质可以包括ROM、RAM、磁盘或光盘等。
进一步地，本发明实施例还公开一种终端，包括存储器和处理器，所述存储器上存储有能够在所述处理器上运行的计算机指令，所述处理器运行所述计算机指令时执行上述图1至图3所示实施例中所述方法技术方案。优选地，所述终端可以为WLAN AP，WLAN站点。
虽然本发明披露如上，但本发明并非限定于此。任何本领域技术人员，在不脱离本发明的精神和范围内，均可作各种更动与修改，因此本发明的保护范围应当以权利要求所限定的范围为准。

Claims (16)

  1. 一种信令传输方法，其特征在于，包括：
    当支持传输实时应用数据分组的优化设定时，配置指示信令，所述指示信令用于指示WLAN站点基于数据分组时长限制和/或传输机会时长限制传输数据包；
    发送所述指示信令。
  2. 根据权利要求1所述的信令传输方法，其特征在于，所述发送所述指示信令包括：
    采用信标帧发送所述指示信令。
  3. 根据权利要求1所述的信令传输方法，其特征在于，所述发送所述指示信令包括：
    采用广播分组发送所述指示信令。
  4. 根据权利要求1所述的信令传输方法，其特征在于，所述发送所述指示信令包括：
    采用握手交互过程中的单播分组发送所述指示信令。
  5. 根据权利要求1所述的信令传输方法，其特征在于，
    当所述指示信令包含所述数据分组时长限制时，所述指示信令还包含所述数据分组的最大持续时长。
  6. 根据权利要求1至5任一项所述的信令传输方法，其特征在于，还包括：
    在发送包含所述传输机会时长限制的指示信令之后，发送传输机会时长延展信令。
  7. 一种信令接收方法，其特征在于，包括：
    接收指示信令，所述指示信令用于指示WLAN站点基于分组时长 限制和/或传输机会时长限制传输数据包，所述指示信令是WLAN接入点支持传输实时应用数据分组的优化设定时配置的；
    根据所述指示信令，设置所述数据包的传输时长满足所述分组时长限制和/或传输机会时长限制。
  8. 根据权利要求7所述的信令接收方法，其特征在于，所述接收指示信令包括：
    采用信标帧接收所述指示信令。
  9. 根据权利要求7所述的信令接收方法，其特征在于，所述接收指示信令包括：
    采用广播分组接收所述指示信令。
  10. 根据权利要求7所述的信令接收方法，其特征在于，所述接收指示信令包括：
    采用握手交互过程中的单播分组接收所述指示信令。
  11. 根据权利要求7所述的信令接收方法，其特征在于，当所述指示信令包含所述数据分组时长限制时，所述指示信令还包含所述数据分组的最大持续时长。
  12. 根据权利要求7至11任一项所述的信令接收方法，其特征在于，还包括：
    在接收包含所述传输机会时长限制的指示信令之后，接收传输机会时长延展信令。
  13. 一种信令传输装置，其特征在于，包括：
    配置模块，如果允许传输实时应用数据分组，则所述配置模块适于配置指示信令，所述指示信令用于指示WLAN站点基于数据分组时长限制和/或传输机会时长限制传输数据包；
    发送模块，适于发送所述指示信令。
  14. 一种信令接收装置，其特征在于，包括：
    接收模块，适于接收指示信令，所述指示信令用于指示WLAN站点基于分组时长限制和/或传输机会时长限制传输数据包，所述指示信令是WLAN接入点允许传输实时应用数据分组时配置的；
    设置模块，适于根据所述指示信令，设置所述数据包的传输时长满足所述分组时长限制和/或传输机会时长限制。
  15. 一种存储介质，其上存储有计算机指令，其特征在于，所述计算机指令运行时执行权利要求1至6任一项或权利要求7至12任一项所述方法的步骤。
  16. 一种终端，包括存储器和处理器，所述存储器上存储有可在所述处理器上运行的计算机指令，其特征在于，所述处理器运行所述计算机指令时执行权利要求1至6任一项或权利要求7至12任一项所述方法的步骤。
PCT/CN2020/086938 2019-05-23 2020-04-26 信令传输、接收方法及装置、存储介质、终端 WO2020233349A1 (zh)

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