WO2020172982A1 - 多无线射频系统的数据传输方法及装置、存储介质、终端 - Google Patents

多无线射频系统的数据传输方法及装置、存储介质、终端 Download PDF

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Publication number
WO2020172982A1
WO2020172982A1 PCT/CN2019/083826 CN2019083826W WO2020172982A1 WO 2020172982 A1 WO2020172982 A1 WO 2020172982A1 CN 2019083826 W CN2019083826 W CN 2019083826W WO 2020172982 A1 WO2020172982 A1 WO 2020172982A1
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WIPO (PCT)
Prior art keywords
data
txop
time slice
csma
adjusted
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PCT/CN2019/083826
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English (en)
French (fr)
Inventor
彭叶新
刘忻
余庆华
李艳涛
徐彦超
王泷
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Spreadtrum Communications Shanghai Co Ltd
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Spreadtrum Communications Shanghai Co Ltd
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Priority to US17/042,576 priority Critical patent/US11445503B2/en
Publication of WO2020172982A1 publication Critical patent/WO2020172982A1/zh
Anticipated expiration legal-status Critical
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    • 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
    • H04W72/12—Wireless traffic scheduling
    • 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
    • H04L47/27—Evaluation or update of window size, e.g. using information derived from acknowledged [ACK] packets
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/14—Spectrum sharing arrangements between different networks
    • 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
    • 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]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the present invention relates to the field of communication technology, in particular to a data transmission method and device, storage medium, and terminal of a multi-radio radio frequency system.
  • Wi-Fi wireless fidelity
  • LTE Long Term Evolution
  • TDD Time Division Duplex
  • the air interface time occupied by data packets transmitted by Wi-Fi may be short or long, and the problem of Wi-Fi transmission occupying LTE time slices may occur.
  • the solutions provided by the prior art still have shortcomings, and further study is needed.
  • the technical problem solved by the present invention is how to adjust the Wi-Fi transmission time, so that multiple radio frequency systems share a single antenna and realize the coexistence of different radio frequency systems.
  • embodiments of the present invention provide a data transmission method for a multi-radio radio frequency system.
  • the multi-radio radio frequency system multiplexes the same radio frequency component to transmit Wi-Fi data and non-Wi-Fi data.
  • multiple TxOP cycles are allocated to transmit multiple data packets of the Wi-Fi data.
  • the data transmission method includes: when the TxOP cycle is allocated, determining the TxOP cycle to be allocated Whether it exceeds the Wi-Fi time slice; if it exceeds, adjust the TxOP cycle so that the adjusted TxOP cycle does not exceed the Wi-Fi time slice.
  • the data transmission method further includes: determining whether the adjusted TxOP cycle can complete the transmission of the current data packet; if it can be completed, allocating the adjusted TxOP cycle and transmitting the current data packet, Otherwise, the allocation of the adjusted TxOP cycle is abandoned.
  • the transmission duration of the current data packet includes the total transmission duration of the current data packet and its confirmation packet
  • the judging whether the adjusted TxOP cycle can complete the transmission of the current data packet includes: calculating the The total transmission duration of the current data packet and its confirmation packet; determining whether the total transmission duration exceeds the adjusted TxOP period.
  • the data transmission method further includes: if the adjusted TxOP cycle can complete the transmission of the current data packet, then after the adjusted TxOP cycle times out, using a CSMA backoff counter to generate a non-zero CSMA backoff count value.
  • the data transmission method further includes: if the adjusted TxOP cycle cannot complete the transmission of the current data packet, then within the adjusted TxOP cycle, using a CSMA backoff counter to generate a non-zero CSMA backoff count value.
  • the data transmission method further includes: adjusting the CSMA back-off counter so that the non-zero CSMA back-off count value is in a non-Wi- The Fi time slice is greater than 0, and the non-Wi-Fi time slice is used to transmit the non-Wi-Fi data.
  • the adjusted CSMA backoff counter is counted in a retention mode, and the retention mode refers to: after the non-zero CSMA backoff count value is reduced by a preset value, the decreased backoff count value is not maintained. Until the non-Wi-Fi time slice times out, and after the non-Wi-Fi time slice times out, continue to decrease from the reduced backoff count value, and the preset value is a non-negative integer.
  • the adjusted CSMA backoff counter is counted in a reset mode, and the reset mode refers to: repeating the following operations until the non-Wi-Fi time slice expires: from the generated non-zero CSMA The backoff count value starts to execute the CSMA backoff count.
  • the CSMA backoff counter is reset to the generated non-zero CSMA backoff count value, and Perform CSMA backoff counting again, and the preset value is a non-zero integer.
  • the embodiment of the present invention also provides a data transmission device for a multi-radio frequency system.
  • the multi-radio frequency system multiplexes the same radio frequency component to transmit Wi-Fi data and non-Wi-Fi data.
  • multiple TxOP cycles are allocated to transmit multiple data packets of the Wi-Fi data
  • the data transmission device includes: a first judgment module, adapted to allocate TxOP cycles When the time, determine whether the TxOP cycle to be allocated exceeds the Wi-Fi time slice; the first adjustment module, if it exceeds, then the first adjustment module is adapted to adjust the TxOP cycle so that the adjusted TxOP cycle does not exceed The Wi-Fi time slice.
  • an embodiment of the present invention also provides 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 data transmission method for a multi-radio frequency system.
  • the multi-radio frequency system multiplexes the same radio frequency component to transmit Wi-Fi data and non-Wi-Fi data.
  • multiple TxOP cycles are allocated to transmit multiple data packets of Wi-Fi data, including: when the TxOP cycle is allocated, judging whether the TxOP cycle to be allocated exceeds the Wi-Fi time slice; if If it exceeds, the TxOP period is adjusted so that the adjusted TxOP period does not exceed the Wi-Fi time slice.
  • the allocated TxOP cycle can be adjusted before Wi-Fi data is transmitted, so that the transmission time of Wi-Fi data does not exceed the Wi-Fi time slice. Further, adjusting the Wi-Fi transmission time is conducive to the sharing of a single antenna by multiple radio frequency systems and the coexistence of different radio frequency systems.
  • the data transmission method further includes: if the adjusted TxOP cycle can complete the transmission of the current data packet, then after the adjusted TxOP cycle times out, using a CSMA backoff counter to generate a non-zero CSMA backoff Count value.
  • FIG. 1 is a schematic flowchart of a data transmission method of a multiple radio frequency system according to an embodiment of the present invention
  • FIG. 2 is a schematic diagram of time slice allocation in the embodiment shown in FIG. 1;
  • FIG. 3 is a schematic diagram of the change of the CSMA backoff count value according to the embodiment of the present invention.
  • FIG. 4 is a schematic structural diagram of a data transmission device of a multi-radio frequency system according to an embodiment of the present invention.
  • Suspension mode and suspension mode are both when the Wi-Fi time slice is about to end, by issuing a command to Wi-Fi (for example, a suspend command or a suspend command) to stop Wi-Fi transmission and enter the suspend mode or Abort mode.
  • a command to Wi-Fi for example, a suspend command or a suspend command
  • the Wi-Fi can retransmit the data by issuing a cancel suspension command or a cancel suspension command to Wi-Fi.
  • a cancel suspension command or a cancel suspension command to Wi-Fi.
  • the related status of Wi-Fi transmission is also cleared, so that Wi-Fi needs to perform carrier sensing again in subsequent Wi-Fi time slices
  • the Carrier Sense Multiple Access (CSMA) backoff mechanism performs channel competition, which will reduce Wi-Fi performance.
  • CSMA Carrier Sense Multiple Access
  • Wi-Fi in the suspend mode if the Wi-Fi is transmitting data packets when the suspend command is issued, the Wi-Fi will wait until the current data interaction is completed before entering the suspend mode.
  • the air interface time occupied by the data transmitted by Wi-Fi may exceed the Wi-Fi time slice, causing the current transmitted Wi-Fi data to affect non-Wi-Fi (for example, LTE )
  • the transmission and reception of non-Wi-Fi data within the time slice reduces the transmission performance of the non-Wi-Fi system.
  • Wi-Fi For Wi-Fi that adopts the suspension mode, if Wi-Fi is transmitting data when the suspension command is issued, then Wi-Fi will immediately stop the data currently being transmitted and enter the suspension mode directly. This will undoubtedly cause the current transmission of Wi-Fi data to fail, and it will need to be retransmitted in the next Wi-Fi time slice, reducing the transmission performance of the Wi-Fi system.
  • the embodiment of the present invention provides a data transmission method for a multi-radio frequency system.
  • the multi-radio frequency system multiplexes the same radio frequency component to transmit Wi-Fi data and non-Wi-Fi data, and is used to transmit the Wi-Fi data.
  • multiple TxOP cycles are allocated to transmit multiple data packets of Wi-Fi data, including: when the TxOP cycle is allocated, judging whether the TxOP cycle to be allocated exceeds the Wi-Fi time slice; if If it exceeds, the TxOP period is adjusted so that the adjusted TxOP period does not exceed the Wi-Fi time slice.
  • the allocated TxOP cycle can be adjusted before Wi-Fi data is transmitted, so that the transmission time of Wi-Fi data does not exceed the Wi-Fi time slice. Further, adjusting the Wi-Fi transmission time is conducive to the sharing of a single antenna by multiple radio frequency systems and the coexistence of different radio frequency systems.
  • FIG. 1 is a schematic flowchart of a data transmission method of a multiple radio frequency system according to an embodiment of the present invention.
  • the multiple radio frequency system can reuse the same radio frequency component to transmit Wi-Fi data and non-Wi-Fi data.
  • the non-Wi-Fi data may be LTE data or other wireless access technology data.
  • the radio frequency component refers to a single radio frequency antenna, hereinafter simply referred to as a single antenna.
  • the multi-radio frequency system can use TDD to transmit Wi-Fi data and non-Wi-Fi data in time sharing.
  • Wi-Fi data is usually transmitted within a Wi-Fi time slice.
  • Wi-Fi can use the CSMA mechanism in the Wi-Fi time slice to obtain the channel usage rights for a period of time.
  • the Wi-Fi time slice used to transmit the Wi-Fi data when the terminal obtains the channel use right, it can pass the transmission opportunity defined in the Institute of Electrical and Electronics Engineers (IEEE) 802.11e ( The Transmission Opportunity, TxOP for short) mechanism allocates a TxOP cycle to transmit multiple data packets of Wi-Fi data.
  • IEEE Institute of Electrical and Electronics Engineers
  • the terminal can obtain the TxOP cycle through the CSMA-based backoff mechanism.
  • the maximum duration of a TxOP cycle is determined according to the priority of the quality of service (Quality of Service, QoS) of data packets transmitted by Wi-Fi (for example, AP or router) in this cycle, that is, a single TxOP
  • QoS Quality of Service
  • the duration of the cycle is fixed.
  • the air interface time occupied by data packets transmitted by Wi-Fi will not exceed the duration of the TxOP cycle.
  • the data transmission method may include the following steps:
  • Step S101 when allocating a TxOP cycle, judge whether the TxOP cycle to be allocated exceeds the Wi-Fi time slice;
  • Step S102 if it exceeds, adjust the TxOP cycle so that the adjusted TxOP cycle does not exceed the Wi-Fi time slice.
  • the terminal may contend for the channel through the CSMA method. If the contending channel successfully obtains the right to use the channel, the terminal can allocate the TxOP period.
  • the terminal When allocating the TxOP cycle, the terminal needs to determine whether the TxOP cycle to be allocated will exceed the Wi-Fi time slice.
  • the terminal may determine whether to adjust the TxOP cycle according to the judgment result. If it is not exceeded, the terminal can still allocate according to the traditional TxOP cycle, and transmit Wi-Fi data packets in the allocated TxOP cycle.
  • the terminal adjusts the TxOP cycle so that the adjusted TxOP cycle does not exceed the Wi-Fi time slice.
  • the interaction process of Wi-Fi transmission refers to a process in which a terminal sends a Wi-Fi data packet and receives feedback information of the Wi-Fi data packet. Under this condition, it is possible to calculate the total transmission duration of the current data packet and its confirmation packet, and determine whether the total transmission duration exceeds the adjusted TxOP period. If it exceeds, the current data packet is no longer transmitted. Otherwise, in the adjusted TxOP period, the interaction process of the current data packet and its feedback information is performed.
  • the interactive process of Wi-Fi transmission may also refer to a process in which the terminal sends a Wi-Fi data packet, but does not include the process of receiving feedback information of the Wi-Fi data packet.
  • the transmission duration of the current data packet can be calculated, and it can be judged whether the transmission duration exceeds the adjusted TxOP period. If it exceeds, the current data packet is no longer transmitted. Otherwise, the current data packet is transmitted within the adjusted TxOP period.
  • FIG. 2 shows a schematic diagram of time slice allocation in the embodiment shown in FIG.
  • time can be divided into time periods, and each time period includes Wi-Fi time slices and non-Wi-Fi time slices.
  • non-Wi-Fi time slice non-Wi-Fi data is usually transmitted; in a Wi-Fi time slice, Wi-Fi data can be transmitted after channel contention successfully obtains the channel use right (the channel contention time is shown in the figure) .
  • the duration of the channel use right may be the traditional TxOP duration in the figure.
  • the TxOP cycle can be adjusted by the embodiment of the present invention, so that the adjusted TxOP total duration does not exceed the Wi-Fi time slice.
  • the figure shows the total duration of the adjusted TxOP.
  • the CSMA backoff mechanism is to continuously monitor the channel when it is detected that the channel is idle, and randomly select the CSMA backoff count after the channel idle time reaches a preset time interval (for example, Extended Interframe Space (EIFS)) Value to get the CSMA backoff time window.
  • EIFS Extended Interframe Space
  • the back-off count value ie, the back-off time window
  • Wi-Fi can obtain the channel usage right of the channel and start Wi-Fi data transmission.
  • the feature of Wi-Fi that the transmission can be performed only after the CSMA backoff count value is reduced to 0 is used.
  • the CSMA backoff count mode is adjusted so that the CSMA backoff time window is
  • the non-Wi-Fi time slice (for example, the LTE time slice) is always greater than 0, thereby achieving the purpose of stopping Wi-Fi from performing Wi-Fi transmission in the non-Wi-Fi time slice.
  • a preset time interval for example, Extended Interframe Space (EIFS)
  • EIFS Extended Interframe Space
  • the CSMA backoff counter can be used to generate a non-zero CSMA backoff count value.
  • a CSMA backoff counter may be used to generate a non-zero CSMA backoff count value.
  • a CSMA backoff counter may be used to generate a non-zero CSMA backoff count value in the adjusted TxOP cycle.
  • the adjusted CSMA backoff counter can be counted in a hold mode or a reset mode, so that Wi-Fi will not be transmitted in a non-Wi-Fi time slice.
  • the hold mode or reset mode eliminates the need for the terminal to perform channel contention according to the CSMA backoff mechanism in the prior art, so that the terminal can quickly resume transmission after the non-Wi-Fi time slice ends.
  • the holding mode refers to: after the non-zero CSMA backoff count value is decreased by a preset value, the decreased backoff count value remains unchanged until the non-Wi-Fi time slice Timeout, and continue to decrease from the reduced backoff count value after the non-Wi-Fi time slice expires, and the preset value is a non-negative integer. If the CSMA backoff count is reduced to 0, then Wi-Fi can resume transmission.
  • the reset mode refers to: repeating the following operations until the non-Wi-Fi time slice expires: starting from the generated non-zero CSMA backoff count value, the CSMA backoff count is executed, and it is decreasing When the preset value does not reach the non-Wi-Fi time slice, reset the CSMA backoff counter to the generated non-zero CSMA backoff count value, and execute the CSMA backoff count again, the preset value is Non-zero integer.
  • a non-zero CSMA count value is generated as the current initial backoff value, and the non-zero CSMA count value is backed off to reduce the CSMA backoff time window.
  • the backoff count value is reset to the current initial backoff value, the preset value is reduced again, and the execution is repeated.
  • the above reduction and reset process will continue until the entire non-Wi-Fi time slice ends.
  • the CSMA backoff time window can still continue to decrease in a manner prescribed by the protocol, and will not be reset. If the CSMA backoff time window is reduced to 0, then Wi-Fi can resume transmission.
  • FIG. 3 is a schematic diagram of the change of the CSMA back-off count value according to the embodiment of the present invention.
  • the terminal may perform the CSMA backoff process.
  • the backoff count value is randomly generated, regardless of whether the terminal is in the Wi-Fi time slice or not, the CSMA backoff time window will be reduced.
  • the backoff count value is reduced to 0, the channel will be obtained Use right, but at this time in the non-Wi-Fi time slice, it will undoubtedly affect the non-Wi-Fi data transmission.
  • the terminal located in the non-Wi-Fi time slice will decrease the preset value (in the figure, the preset After the value is 2), keep the backoff count value unchanged until the non-Wi-Fi time slice times out, and after the non-Wi-Fi time slice times out and enter the Wi-Fi slice, continue to reduce the backoff count value .
  • the backoff count value is reduced to 0, the channel use right will be obtained and Wi-Fi data will be transmitted.
  • the terminal located in the non-Wi-Fi time slice will decrease the preset value (in the figure, the preset value) After setting the value to 2), reset the backoff count value to the initially generated backoff count value until the non-Wi-Fi time slice expires. And after the non-Wi-Fi time slice times out and enters the Wi-Fi slice, continue to decrease the backoff count value.
  • the backoff count value is reduced to 0, the channel use right will be obtained and Wi-Fi data will be transmitted.
  • FIG. 3 only schematically shows the non-Wi-Fi time slice, the start and end times of the Wi-Fi time slice, and the duration of the CSMA backoff process.
  • the time for generating the CSMA backoff count value is usually within the Wi-Fi time slice.
  • the hold mode or reset mode is used to prevent the generated CSMA backoff count value from being reduced to 0, and when the next Wi-Fi time slice arrives, the CSMA backoff count continues to decrease according to the traditional CSMA backoff mechanism value.
  • the embodiment of the present invention optimizes the system performance when Wi-Fi and non-Wi-Fi share a single antenna.
  • the Wi-Fi transmission will not exceed the Wi-Fi time slice, thereby avoiding the transmission of Wi-Fi data in the non-Wi-Fi time slice and effectively improving the performance of the non-Wi-Fi system.
  • the CSMA backoff mechanism it is possible to ensure the normal completion of Wi-Fi data interaction within the Wi-Fi time slice, thereby effectively reducing the occurrence of current Wi-Fi transmission suspension, resulting in the degradation of Wi-Fi system performance.
  • the technical solution provided by the embodiment of the present invention does not affect the data receiving and sending process of other terminals that share a single antenna using the existing technical solution, it can coexist with other terminals in practical applications and has good compatibility.
  • FIG. 4 is a schematic structural diagram of a data transmission device of a multi-radio frequency system according to an embodiment of the present invention.
  • the multi-wireless radio frequency system multiplexes the same radio frequency component to transmit Wi-Fi data and non-Wi-Fi data, and transmits Wi-Fi data by allocating multiple TxOP cycles within the Wi-Fi time slice used to transmit the Wi-Fi data.
  • -Multiple data packets of Fi data the data transmission device 4 of the multi-radio radio system (hereinafter referred to as the data transmission device 4) can be implemented by a device with a common single antenna to perform the method and technical solutions shown in FIGS. 1 to 3.
  • the data transmission device 4 may include: a first judging module 41, which is adapted to judge whether the TxOP period to be allocated exceeds the Wi-Fi time slice when the TxOP period is allocated; the first adjustment module 42, if If it exceeds, the first adjustment module 42 is adapted to adjust the TxOP cycle so that the adjusted TxOP cycle does not exceed the Wi-Fi time slice.
  • the data transmission device 4 may further include: a second judgment module 43, adapted to judge whether the adjusted TxOP cycle can complete the transmission of the current data packet; the allocation module 44, if it can be completed, then The allocation module 44 is adapted to allocate the adjusted TxOP cycle and transmit the current data packet, otherwise, the allocation of the adjusted TxOP cycle is abandoned.
  • a second judgment module 43 adapted to judge whether the adjusted TxOP cycle can complete the transmission of the current data packet
  • the allocation module 44 if it can be completed, then The allocation module 44 is adapted to allocate the adjusted TxOP cycle and transmit the current data packet, otherwise, the allocation of the adjusted TxOP cycle is abandoned.
  • the transmission time length of the current data packet includes the total transmission time length of the current data packet and its confirmation packet
  • the second judgment module 43 may include: a calculation sub-module 431 adapted to calculate the current data packet The total transmission duration of the packet and its confirmation packet; the judging sub-module 432 is adapted to determine whether the total transmission duration exceeds the adjusted TxOP period.
  • the data transmission device 4 may further include: a first generating module 45. If the adjusted TxOP cycle can complete the transmission of the current data packet, the first generating module 45 is adapted to use a CSMA backoff counter to generate a non-zero CSMA backoff count after the adjusted TxOP cycle times out value.
  • the data transmission device 4 may further include: a second generation module 46. If the adjusted TxOP cycle cannot complete the transmission of the current data packet, then the second generating module 46 is adapted to generate a non-zero CSMA backoff count by using a CSMA backoff counter in the adjusted TxOP cycle value.
  • the data transmission device 4 may further include: a second adjustment module 47, adapted to adjust the CSMA back-off counter after generating a non-zero CSMA back-off count value using the CSMA back-off counter, so that the non-zero The CSMA backoff count value of 0 is greater than 0 in a non-Wi-Fi time slice, and the non-Wi-Fi time slice is used to transmit the non-Wi-Fi data.
  • a second adjustment module 47 adapted to adjust the CSMA back-off counter after generating a non-zero CSMA back-off count value using the CSMA back-off counter, so that the non-zero The CSMA backoff count value of 0 is greater than 0 in a non-Wi-Fi time slice, and the non-Wi-Fi time slice is used to transmit the non-Wi-Fi data.
  • the adjusted CSMA back-off counter adopts a holding mode for counting, and the holding mode may refer to: after the non-zero CSMA back-off count value is decreased by a preset value, the decreased back-off counter is maintained The count value remains unchanged until the non-Wi-Fi time slice expires, and after the non-Wi-Fi time slice expires, the backoff count value after the decrease continues to decrease, and the preset value is non-negative Integer.
  • the adjusted CSMA backoff counter is counted in a reset mode, and the reset mode may refer to: repeating the following operations until the non-Wi-Fi time slice expires: from the generated The non-zero CSMA backoff count value starts to execute the CSMA backoff count, and when the preset value is decreased and the non-Wi-Fi time slice is not reached, the CSMA backoff counter is reset to the generated non-zero CSMA backoff Count value, and execute CSMA backoff counting again, the preset value is a non-zero integer.
  • 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.
  • the 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 base station may interact with the user equipment.
  • the terminal may be a user equipment that multiplexes the same radio frequency antenna for Wi-Fi data and LTE data transmission.

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Abstract

一种多无线射频系统的数据传输方法及装置、存储介质、终端，所述多无线射频系统复用同一射频部件传输Wi-Fi数据和非Wi-Fi数据，在用于传输所述Wi-Fi数据的Wi-Fi时间片内，通过分配多个TxOP周期以传输Wi-Fi数据的多个数据包，所述方法包括：在分配TxOP周期时，判断拟分配的TxOP周期是否超出所述Wi-Fi时间片；如果超出，则调整所述TxOP周期，以使得调整后的TxOP周期不超出所述Wi-Fi时间片。通过本发明的技术方案，有利于多射频系统共用单天线，实现不同射频系统共存。

Description

多无线射频系统的数据传输方法及装置、存储介质、终端
本申请要求于2019年2月26日提交中国专利局、申请号为201910142207.5、发明名称为“多无线射频系统的数据传输方法及装置、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，具体地涉及一种多无线射频系统的数据传输方法及装置、存储介质、终端。
背景技术
在当前市面上，为降低成本、节省功耗，同一终端上的无线保真(Wireless Fidelity，简称Wi-Fi)射频系统(简称Wi-Fi)和长期演进(Long Term Evolution，简称LTE)射频系统(简称LTE)通常共用单天线传输Wi-Fi数据和LTE数据。在使用所述共用单天线时，一般采用时分复用(Time Division Duplex，简称TDD，又称时分双工)机制为Wi-Fi和LTE分配不同的时间片，使Wi-Fi和LTE在各自的时间片内进行数据收发。
在TDD机制中，Wi-Fi传输的数据包占用的空口时间可能很短，也可能很长，可能出现Wi-Fi传输占用LTE时间片的问题。针对该问题，现有技术提供的解决方案仍存在缺陷，需要进一步研究。
发明内容
本发明解决的技术问题是如何调整Wi-Fi传输时长，以利于多射频系统共用单天线，实现不同射频系统共存。
为解决上述技术问题，本发明实施例提供一种多无线射频系统的数据传输方法，所述多无线射频系统复用同一射频部件传输Wi-Fi数 据和非Wi-Fi数据，在用于传输所述Wi-Fi数据的Wi-Fi时间片内，通过分配多个TxOP周期以传输Wi-Fi数据的多个数据包，所述数据传输方法包括：在分配TxOP周期时，判断拟分配的TxOP周期是否超出所述Wi-Fi时间片；如果超出，则调整所述TxOP周期，以使得调整后的TxOP周期不超出所述Wi-Fi时间片。
可选的，所述数据传输方法还包括：判断所述调整后的TxOP周期是否能够完成当前数据包的传输；如果能够完成，则分配所述调整后的TxOP周期并传输所述当前数据包，否则放弃分配所述调整后的TxOP周期。
可选的，所述当前数据包的传输时长包括所述当前数据包及其确认包的总传输时长，所述判断所述调整后的TxOP周期是否能够完成当前数据包的传输包括：计算所述当前数据包及其确认包的总传输时长；判断所述总传输时长是否超出所述调整后的TxOP周期。
可选的，所述数据传输方法还包括：如果所述调整后的TxOP周期能够完成所述当前数据包的传输，那么在所述调整后的TxOP周期超时后，采用CSMA退避计数器生成非0的CSMA退避计数值。
可选的，所述数据传输方法还包括：如果所述调整后的TxOP周期不能够完成所述当前数据包的传输，那么在所述调整后的TxOP周期内，采用CSMA退避计数器生成非0的CSMA退避计数值。
可选的，在采用CSMA退避计数器生成非0的CSMA退避计数值之后，所述数据传输方法还还包括：调整所述CSMA退避计数器，以使得所述非0的CSMA退避计数值在非Wi-Fi时间片内大于0，所述非Wi-Fi时间片用于传输所述非Wi-Fi数据。
可选的，调整后的CSMA退避计数器采用保持模式进行计数，所述保持模式指的是：在所述非0的CSMA退避计数值减小预设数值后，保持减小后的退避计数值不变，直至所述非Wi-Fi时间片超时，并在所述非Wi-Fi时间片超时后从所述减小后的退避计数值继续减 小，所述预设数值为非负整数。
可选的，调整后的CSMA退避计数器采用重置模式进行计数，所述重置模式指的是：重复执行如下操作直至所述非Wi-Fi时间片超时：从所述生成的非0的CSMA退避计数值开始执行CSMA退避计数，在减小预设数值且未到达所述非Wi-Fi时间片时，将所述CSMA退避计数器重置为所述生成的非0的CSMA退避计数值，并再次执行CSMA退避计数，所述预设数值为非0整数。
为解决上述技术问题，本发明实施例还提供一种多无线射频系统的数据传输装置，所述多无线射频系统复用同一射频部件传输Wi-Fi数据和非Wi-Fi数据，在用于传输所述Wi-Fi数据的Wi-Fi时间片内，通过分配多个TxOP周期以传输Wi-Fi数据的多个数据包，所述数据传输装置包括：第一判断模块，适于在分配TxOP周期时，判断拟分配的TxOP周期是否超出所述Wi-Fi时间片；第一调整模块，如果超出，则所述第一调整模块适于调整所述TxOP周期，以使得调整后的TxOP周期不超出所述Wi-Fi时间片。
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多无线射频系统的数据传输方法，所述多无线射频系统复用同一射频部件传输Wi-Fi数据和非Wi-Fi数据，在用于传输所述Wi-Fi数据的Wi-Fi时间片内，通过分配多个TxOP周期以传输Wi-Fi数据的多个数据包，包括：在分配TxOP周期时，判断拟分配的TxOP周期是否超出所述Wi-Fi时间片；如果超出，则调整所述TxOP周期，以使得调整后的TxOP周期不超出所述Wi-Fi时 间片。通过本发明实施例提供的技术方案，可以在传输Wi-Fi数据前，调整分配的TxOP周期，以使得Wi-Fi数据的传输时长不会超出Wi-Fi时间片。进一步，调整Wi-Fi传输时长，有利于多无线射频系统共用单天线，实现不同射频系统共存。
进一步，所述数据传输方法还包括：如果所述调整后的TxOP周期能够完成所述当前数据包的传输，那么在所述调整后的TxOP周期超时后，采用CSMA退避计数器生成非0的CSMA退避计数值。通过本发明实施例提供的技术方案，在从非Wi-Fi时间片进入Wi-Fi时间片时，无需按照初始接入Wi-Fi网络执行传统CSMA的方式进行信道竞争，从而可以使Wi-Fi尽快恢复传输，优化Wi-Fi性能，进一步提升系统整体性能。
附图说明
图1是本发明实施例的一种多无线射频系统的数据传输方法的流程示意图；
图2是图1所示实施例中时间片分配示意图；
图3是执行本发明实施例的CSMA退避计数值变化示意图；
图4是本发明实施例的一种多无线射频系统的数据传输装置的结构示意图。
具体实施方式
如背景技术所言，现有技术中，Wi-Fi与其他无线技术共用单天线时，存在不足，仍需改进。
本申请发明人经研究发现，现有技术中，对于Wi-Fi与其他无线技术(例如，LTE技术)共用单天线时，停止Wi-Fi传输的方案有两种：挂起模式(Suspension mode)和中止模式(Abort mode)。挂起模式和中止模式都是在Wi-Fi时间片快要结束时，通过向Wi-Fi下发 命令(例如，挂起命令或中止命令)使得Wi-Fi传输停止，并可以进入挂起模式或中止模式。
之后，可以通过向Wi-Fi下发撤销挂起命令或撤销中止命令，使得Wi-Fi重新传输数据。在挂起模式和中止模式中，Wi-Fi传输被停止后，Wi-Fi传输的相关状态也一并被清除，使得Wi-Fi在后续的Wi-Fi时间片内，需要重新执行载波侦听多路访问(Carrier Sense Multiple Access，简称CSMA)退避机制进行信道竞争，这将降低Wi-Fi性能。
进一步，对采用挂起模式的Wi-Fi而言，如果下发挂起命令时，Wi-Fi正在传输数据包，那么Wi-Fi会一直等到当前数据交互完成后，才会进入挂起模式。
由于Wi-Fi将等待当前数据交互完成，因而Wi-Fi传输的数据所占用的空口时间可能会超出Wi-Fi时间片，从而导致当前传输的Wi-Fi数据影响非Wi-Fi(例如，LTE)时间片内的非Wi-Fi数据的收发，降低非Wi-Fi系统的传输性能。
对采用中止模式的Wi-Fi而言，如果下发中止命令时，Wi-Fi正在传输数据，那么Wi-Fi会立即中止当前正在传输的数据，并直接进入中止模式。这无疑会导致当前传输的Wi-Fi数据传输失败，并需要在下一个Wi-Fi时间片内重传，降低Wi-Fi系统的传输性能。
本发明实施例提供一种多无线射频系统的数据传输方法，所述多无线射频系统复用同一射频部件传输Wi-Fi数据和非Wi-Fi数据，在用于传输所述Wi-Fi数据的Wi-Fi时间片内，通过分配多个TxOP周期以传输Wi-Fi数据的多个数据包，包括：在分配TxOP周期时，判断拟分配的TxOP周期是否超出所述Wi-Fi时间片；如果超出，则调整所述TxOP周期，以使得调整后的TxOP周期不超出所述Wi-Fi时间片。通过本发明实施例提供的技术方案，可以在传输Wi-Fi数据前，调整分配的TxOP周期，以使得Wi-Fi数据的传输时长不会超出Wi-Fi时间片。进一步，调整Wi-Fi传输时长，有利于多无线射频系统共用单天线，实现不同射频系统共存。
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多无线射频系统的数据传输方法的流程示意图。所述多无线射频系统可以复用同一射频部件传输Wi-Fi数据和非Wi-Fi数据。
在实际应用中，所述非Wi-Fi数据可以为LTE数据或其他无线接入技术数据。所述射频部件指的是单射频天线，以下简称为单天线。
所述多无线射频系统可以采用TDD方式分时传输Wi-Fi数据和非Wi-Fi数据。Wi-Fi数据通常在Wi-Fi时间片内传输。Wi-Fi可以在Wi-Fi时间片内采用CSMA机制来获得一段时间内的信道使用权。在用于传输所述Wi-Fi数据的Wi-Fi时间片内，终端获得信道使用权时，可以通过电气和电子工程师协会(Institute of Electrical and Electronics Engineers，简称IEEE)802.11e中定义的传输机会(Transmission Opportunity，简称TxOP)机制分配TxOP周期以传输Wi-Fi数据的多个数据包。
具体而言，在Wi-Fi时间片内，终端可以通过基于CSMA退避机制获得TxOP周期。当前协议中，TxOP周期的最大持续时间是按照Wi-Fi(例如，AP或者路由器)在该周期内传输的数据包的服务质量(Quality of Service，简称QoS)的优先级决定的，即单个TxOP周期的持续时间是固定的。并且，通常情况下，Wi-Fi传输的数据包所占用的空口时间不会超过TxOP周期的持续时间。
在具体实施中，所述数据传输方法可以包括以下步骤：
步骤S101，在分配TxOP周期时，判断拟分配的TxOP周期是否超出所述Wi-Fi时间片；
步骤S102，如果超出，则调整所述TxOP周期，以使得调整后的TxOP周期不超出所述Wi-Fi时间片。
具体而言，在步骤S101中，在Wi-Fi时间片内，终端可以通过 CSMA方式竞争信道。如果竞争信道成功获得信道使用权，那么终端可以分配TxOP周期。
在分配TxOP周期时，终端需要判断拟分配的TxOP周期是否会超出所述Wi-Fi时间片。
在步骤S102中，终端可以根据判断结果确定是否调整所述TxOP周期。如果没有超出，终端仍然可以按照传统的TxOP周期进行分配，并在该分配的TxOP周期内传输Wi-Fi数据包。
如果超出，则终端调整所述TxOP周期，使得调整后的TxOP周期不会超出所述Wi-Fi时间片。
进一步，判断所述调整后的TxOP周期内，是否可以足够完成Wi-Fi传输的交互过程。如果是，则可以按照所述调整后的TxOP周期进行分配，否则就停止分配所述调整后的TxOP周期。
其中，所述Wi-Fi传输的交互过程指的是终端发送Wi-Fi数据包并接收该Wi-Fi数据包的反馈信息的过程。在此条件下，可以计算当前数据包及其确认包的总传输时长，并判断所述总传输时长是否超出所述调整后的TxOP周期。如果超出，则不再传输所述当前数据包。否则，在所述调整后的TxOP周期内，进行所述当前数据包及其反馈信息的交互过程。
或者，所述Wi-Fi传输的交互过程也可以指的是终端发送Wi-Fi数据包，但不包括接收该Wi-Fi数据包的反馈信息的过程。在此条件下，可以计算当前数据包的传输时长，并判断所述传输时长是否超出所述调整后的TxOP周期。如果超出，则不再传输所述当前数据包。否则，在所述调整后的TxOP周期内，传输所述当前数据包。
为清晰阐述图1所示实施例，图2给出图1所示实施例的时间片分配示意图。参考图2，可以将时间按照时间周期进行划分，每个时间周期包含Wi-Fi时间片和非Wi-Fi时间片。在非Wi-Fi时间片内，通常传输非Wi-Fi数据；在Wi-Fi时间片内，在信道竞争成功获得信 道使用权后可以传输Wi-Fi数据(图中示出了信道竞争时间)。当采用现有技术获得信道使用权时，其信道使用权的持续时间可以为图示中的传统TxOP持续时间。所述传统TxOP持续时间超出Wi-Fi时间片时，可以通过本发明实施例调整TxOP周期，使得调整后的TxOP的总持续时间不超出Wi-Fi时间片。图中示出了调整后的TxOP的总持续时间。
本领域技术人员理解，传统Wi-Fi系统中，信道竞争采用CSMA退避机制实现。所述CSMA退避机制是在侦测到信道空闲时持续监听信道，并在信道空闲时间达到预设时间间隔(例如，扩展帧间间隔(Extended Interframe Space，简称EIFS))后，随机选择CSMA退避计数值，以得到CSMA退避时间窗口。在该CSMA退避时间窗口内，如果信道仍然处于空闲状态，则退避计数值(即退避时间窗口)随时间逐渐减小。如果在该CSMA退避计数值减到0的过程中，信道一直是空闲的，那么Wi-Fi就可以获得该信道的信道使用权，并开始进行Wi-Fi数据传输。
在本发明实施例中，利用Wi-Fi必须在CSMA退避计数值减到0以后才可以进行传输的特点，在Wi-Fi时间片即将结束时，调整CSMA退避计数方式，使得CSMA退避时间窗口在非Wi-Fi时间片(例如，LTE时间片)内永远大于0，从而达到停止Wi-Fi在非Wi-Fi时间片内进行Wi-Fi传输的目的。在从所述非Wi-Fi时间片进入所述非Wi-Fi时间片后，无需等待信道空闲时间达到预设时间间隔(例如，扩展帧间间隔(Extended Interframe Space，简称EIFS))，就可以使得CSMA退避计数值继续减到0，并传输非Wi-Fi数据。
在具体实施中，无论所述调整后的TxOP周期是否能够完成所述当前数据包的传输，都可以采用CSMA退避计数器生成非0的CSMA退避计数值。
作为一个实施例，如果所述调整后的TxOP周期能够完成所述当前数据包的传输，那么可以在所述调整后的TxOP周期超时后，采用 CSMA退避计数器生成非0的CSMA退避计数值。
作为一个变化实施例，如果所述调整后的TxOP周期不能够完成所述当前数据包的传输，那么可以在所述调整后的TxOP周期内，采用CSMA退避计数器生成非0的CSMA退避计数值。
在具体实施中，调整后的CSMA退避计数器可以采用保持模式或重置模式进行计数，使得Wi-Fi不会在非Wi-Fi时间片内传输。进一步，所述保持模式或重置模式使得终端不必按照现有技术中的CSMA退避机制进行信道竞争，从而实现终端能够在非Wi-Fi时间片结束后快速恢复传输。
在具体实施中，所述保持模式指的是：在所述非0的CSMA退避计数值减小预设数值后，保持减小后的退避计数值不变，直至所述非Wi-Fi时间片超时，并在所述非Wi-Fi时间片超时后从所述减小后的退避计数值继续减小，所述预设数值为非负整数。如果CSMA退避计数值减小到0，那么Wi-Fi就可以恢复传输。
在具体实施中，所述重置模式指的是：重复执行如下操作直至所述非Wi-Fi时间片超时：从所述生成的非0的CSMA退避计数值开始执行CSMA退避计数，在减小预设数值且未到达所述非Wi-Fi时间片时，将所述CSMA退避计数器重置为所述生成的非0的CSMA退避计数值，并再次执行CSMA退避计数，所述预设数值为非0整数。
具体而言，在非Wi-Fi时间片内，生成非0的CSMA计数值作为当前初始退避值，并从该非0的CSMA计数值开始退避以减小CSMA退避时间窗口。在减小过程中，如果未到达所述非Wi-Fi时间片，则将退避计数值重置成所述当前初始退避值，重新减小预设数值，并往复执行。上述减小、重置的过程将一直持续到整个非Wi-Fi时间片结束。在所述非Wi-Fi时间片结束后，所述CSMA退避时间窗口仍然可以按协议规定方式继续减小，不再重置。如果所述CSMA退避时间窗口减小到0，那么Wi-Fi就可以恢复传输。
图3是执行本发明实施例的CSMA退避计数值变化示意图。参考图3，在其他终端占用信道传输Wi-Fi数据时，信道忙，在所述Wi-Fi数据传输结束之后，其他终端将释放信道。进一步，在帧间隔(Interframe Space，简称IFS)时间之后，终端可以执行CSMA退避过程。对传统CSMA而言，在随机生成退避计数值之后，无论所述终端是否位于Wi-Fi时间片内，都将减小CSMA退避时间窗口，当所述退避计数值减至0时，将获得信道使用权，但此时处于非Wi-Fi时间片内，无疑会影响非Wi-Fi数据传输。
对本发明实施例提供的CSMA退避机制而言，如果采用保持模式，那么在随机生成退避计数值之后，位于非Wi-Fi时间片内的终端将在减小预设数值(图示中，预设数值为2)之后，保持退避计数值不变，直至所述非Wi-Fi时间片超时，并在所述非Wi-Fi时间片超时进入Wi-Fi片后，继续减小所述退避计数值。当所述退避计数值减至0时，将获得信道使用权，并传输Wi-Fi数据。
对本发明实施例提供的CSMA退避机制而言，如果采用重置模式，那么在随机生成退避计数值之后，位于非Wi-Fi时间片内的终端将在减小预设数值(图示中，预设数值为2)之后，将所述退避计数值重置为初始生成的退避计数值，直至所述非Wi-Fi时间片超时。并在所述非Wi-Fi时间片超时进入Wi-Fi片后，继续减小所述退避计数值。当所述退避计数值减至0时，将获得信道使用权，并传输Wi-Fi数据。
本领域技术人员理解，图3仅示意性地表示了非Wi-Fi时间片和Wi-Fi时间片的起止时间以及CSMA退避过程的持续时间。在实际应用中，生成CSMA退避计数值的时间通常位于Wi-Fi时间片内。在非Wi-Fi时间片内，采用保持模式或重置模式以避免生成的CSMA退避计数值减至0，并在下一个Wi-Fi时间片到达时，按照传统CSMA退避机制继续减小CSMA退避计数值。
由上，通过本发明实施例，优化了Wi-Fi及非Wi-Fi共用单天线 时的系统性能。一方面，通过调整TxOP周期，使得Wi-Fi传输不会超出Wi-Fi时间片，从而可以避免在非Wi-Fi时间片内传输Wi-Fi数据，有效提高非Wi-Fi系统性能。另一方面，通过调整CSMA退避机制，可以确保Wi-Fi时间片内的正常完成Wi-Fi数据交互，从而有效减少发生当前Wi-Fi传输中止，导致Wi-Fi系统性能降低的情况。此外，由于本发明实施例提供的技术方案不会影响采用现有技术方案共用单天线的其他终端的数据收发过程，因而在实际应用中，可以与其他终端共存，具有很好的兼容性。
图4是本发明实施例的一种多无线射频系统的数据传输装置的结构示意图。所述多无线射频系统复用同一射频部件传输Wi-Fi数据和非Wi-Fi数据，在用于传输所述Wi-Fi数据的Wi-Fi时间片内，通过分配多个TxOP周期以传输Wi-Fi数据的多个数据包，所述多无线射频系统的数据传输装置4(以下简称数据传输装置4)可以由具有共用单天线的设备执行图1至图3所示方法技术方案。
具体而言，所述数据传输装置4可以包括：第一判断模块41，适于在分配TxOP周期时，判断拟分配的TxOP周期是否超出所述Wi-Fi时间片；第一调整模块42，如果超出，则所述第一调整模块42适于调整所述TxOP周期，以使得调整后的TxOP周期不超出所述Wi-Fi时间片。
在具体实施中，所述数据传输装置4还可以包括：第二判断模块43，适于判断所述调整后的TxOP周期是否能够完成当前数据包的传输；分配模块44，如果能够完成，则所述分配模块44适于分配所述调整后的TxOP周期并传输所述当前数据包，否则放弃分配所述调整后的TxOP周期。
在具体实施中，所述当前数据包的传输时长包括所述当前数据包及其确认包的总传输时长，所述第二判断模块43可以包括：计算子模块431，适于计算所述当前数据包及其确认包的总传输时长；判断子模块432，适于判断所述总传输时长是否超出所述调整后的TxOP 周期。
在具体实施中，所述数据传输装置4还可以包括：第一生成模块45。如果所述调整后的TxOP周期能够完成所述当前数据包的传输，那么所述第一生成模块45适于在所述调整后的TxOP周期超时后，采用CSMA退避计数器生成非0的CSMA退避计数值。
在具体实施中，所述数据传输装置4还可以包括：第二生成模块46。如果所述调整后的TxOP周期不能够完成所述当前数据包的传输，那么所述第二生成模块46适于在所述调整后的TxOP周期内，采用CSMA退避计数器生成非0的CSMA退避计数值。
在具体实施中，所述数据传输装置4还可以包括：第二调整模块47，适于在采用CSMA退避计数器生成非0的CSMA退避计数值之后，调整所述CSMA退避计数器，以使得所述非0的CSMA退避计数值在非Wi-Fi时间片内大于0，所述非Wi-Fi时间片用于传输所述非Wi-Fi数据。
作为一个具体实施例，调整后的CSMA退避计数器采用保持模式进行计数，所述保持模式可以指的是：在所述非0的CSMA退避计数值减小预设数值后，保持减小后的退避计数值不变，直至所述非Wi-Fi时间片超时，并在所述非Wi-Fi时间片超时后从所述减小后的退避计数值继续减小，所述预设数值为非负整数。
作为又一个具体实施例，调整后的CSMA退避计数器采用重置模式进行计数，所述重置模式可以指的是：重复执行如下操作直至所述非Wi-Fi时间片超时：从所述生成的非0的CSMA退避计数值开始执行CSMA退避计数，在减小预设数值且未到达所述非Wi-Fi时间片时，将所述CSMA退避计数器重置为所述生成的非0的CSMA退避计数值，并再次执行CSMA退避计数，所述预设数值为非0整数。
关于图4所示的数据传输装置4的工作原理、工作方式的更多内容，可以一并参照上述图1至图3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计算机可读存储介质。所述存储介质可以包括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，所述基站可以与所述用户设备进行交互，具体而言，所述终端可以为复用同一射频天线进行Wi-Fi数据和LTE数据传输的用户设备。
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 (11)

  1. 一种多无线射频系统的数据传输方法，所述多无线射频系统复用同一射频部件传输Wi-Fi数据和非Wi-Fi数据，在用于传输所述Wi-Fi数据的Wi-Fi时间片内，通过分配多个TxOP周期以传输Wi-Fi数据的多个数据包，其特征在于，包括：
    在分配TxOP周期时，判断拟分配的TxOP周期是否超出所述Wi-Fi时间片；
    如果超出，则调整所述TxOP周期，以使得调整后的TxOP周期不超出所述Wi-Fi时间片。
  2. 根据权利要求1所述的数据传输方法，其特征在于，还包括：
    判断所述调整后的TxOP周期是否能够完成当前数据包的传输；
    如果能够完成，则分配所述调整后的TxOP周期并传输所述当前数据包，否则放弃分配所述调整后的TxOP周期。
  3. 根据权利要求2所述的数据传输方法，其特征在于，所述当前数据包的传输时长包括所述当前数据包及其确认包的总传输时长，所述判断所述调整后的TxOP周期是否能够完成当前数据包的传输包括：
    计算所述当前数据包及其确认包的总传输时长；
    判断所述总传输时长是否超出所述调整后的TxOP周期。
  4. 根据权利要求2所述的数据传输方法，还包括：
    如果所述调整后的TxOP周期能够完成所述当前数据包的传输，那么在所述调整后的TxOP周期超时后，采用CSMA退避计数器生成非0的CSMA退避计数值。
  5. 根据权利要求2所述的数据传输方法，其特征在于，还包括：
    如果所述调整后的TxOP周期不能够完成所述当前数据包的传输， 那么在所述调整后的TxOP周期内，采用CSMA退避计数器生成非0的CSMA退避计数值。
  6. 根据权利要求4或5所述的数据传输方法，其特征在于，在采用CSMA退避计数器生成非0的CSMA退避计数值之后，还包括：
    调整所述CSMA退避计数器，以使得所述非0的CSMA退避计数值在非Wi-Fi时间片内大于0，所述非Wi-Fi时间片用于传输所述非Wi-Fi数据。
  7. 根据权利要求6所述的数据传输方法，其特征在于，调整后的CSMA退避计数器采用保持模式进行计数，所述保持模式指的是：
    在所述非0的CSMA退避计数值减小预设数值后，保持减小后的退避计数值不变，直至所述非Wi-Fi时间片超时，并在所述非Wi-Fi时间片超时后从所述减小后的退避计数值继续减小，所述预设数值为非负整数。
  8. 根据权利要求6所述的传输方法，其特征在于，调整后的CSMA退避计数器采用重置模式进行计数，所述重置模式指的是：
    重复执行如下操作直至所述非Wi-Fi时间片超时：
    从所述生成的非0的CSMA退避计数值开始执行CSMA退避计数，在减小预设数值且未到达所述非Wi-Fi时间片时，将所述CSMA退避计数器重置为所述生成的非0的CSMA退避计数值，并再次执行CSMA退避计数，所述预设数值为非0整数。
  9. 一种多无线射频系统的数据传输装置，所述多无线射频系统复用同一射频部件传输Wi-Fi数据和非Wi-Fi数据，在用于传输所述Wi-Fi数据的Wi-Fi时间片内，通过分配多个TxOP周期以传输Wi-Fi数据的多个数据包，其特征在于，包括：
    第一判断模块，适于在分配TxOP周期时，判断拟分配的TxOP周期是否超出所述Wi-Fi时间片；
    第一调整模块，如果超出，则所述第一调整模块适于调整所述TxOP周期，以使得调整后的TxOP周期不超出所述Wi-Fi时间片。
  10. 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8任一项所述的方法的步骤。
  11. 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8任一项所述的方法的步骤。
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