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WO2019056370A1 - 一种通信方法和装置 - Google Patents

一种通信方法和装置 Download PDF

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Publication number
WO2019056370A1
WO2019056370A1 PCT/CN2017/103178 CN2017103178W WO2019056370A1 WO 2019056370 A1 WO2019056370 A1 WO 2019056370A1 CN 2017103178 W CN2017103178 W CN 2017103178W WO 2019056370 A1 WO2019056370 A1 WO 2019056370A1
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WO
WIPO (PCT)
Prior art keywords
time
terminal device
time length
frequency band
length
Prior art date
Application number
PCT/CN2017/103178
Other languages
English (en)
French (fr)
Inventor
杨坤
温容慧
于峰
于光炜
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to PCT/CN2017/103178 priority Critical patent/WO2019056370A1/zh
Priority to EP17925582.3A priority patent/EP3675585B1/en
Priority to CN201780095160.0A priority patent/CN111108800B/zh
Publication of WO2019056370A1 publication Critical patent/WO2019056370A1/zh
Priority to US16/828,873 priority patent/US11317295B2/en

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W16/00Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/14Spectrum sharing arrangements between different networks
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/12Wireless traffic scheduling
    • H04W72/1263Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows
    • H04W72/1273Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows of downlink data flows
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W74/00Wireless channel access
    • H04W74/002Transmission of channel access control information
    • H04W74/006Transmission of channel access control information in the downlink, i.e. towards the terminal
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W74/00Wireless channel access
    • H04W74/08Non-scheduled access, e.g. ALOHA
    • H04W74/0808Non-scheduled access, e.g. ALOHA using carrier sensing, e.g. carrier sense multiple access [CSMA]
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/20Control channels or signalling for resource management
    • H04W72/23Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal

Definitions

  • LTE Long Term Evolution
  • a licensed spectrum assisted access (LAA) system is a Long Term Evolution (LTE) system that uses unlicensed spectrum for data communication.
  • the LAA system uses the preemption mechanism of Listening Before Talk (LBT) to obtain the channel occupant of the unlicensed band.
  • LBT Listening Before Talk
  • the terminal device/network device that obtains the channel occupant can send data, and the length of the transmitted data cannot exceed the maximum channel occupation time. (Maximum channel occupancy time, MCOT).
  • the LBT preemption mechanism guarantees the fairness of the coexistence of the LAA system and the Wifi system in the unlicensed band.
  • the LAA terminal device and the LAA network device need to perform the LBT process before transmitting the data.
  • the amount of downlink data in the network is much higher than the amount of uplink data, and the amount of uplink data to be sent by some terminal devices is not even enough to occupy the entire MCOT.
  • the number of terminal devices is much larger than the number of network devices. Therefore, not only a large number of terminal devices frequently occupy unlicensed frequency bands for uplink transmission, but also network devices or terminal devices that need to transmit a large amount of uplink data are difficult to preempt.
  • the occupation of the unlicensed band is downlinked, resulting in a large delay in data transmission.
  • the terminal device with less uplink data transmission preempts the occupation right of the unlicensed frequency band by the LBT process, it often uses only a part of the length of the MCOT, resulting in a lower utilization rate of the unlicensed frequency band.
  • the embodiment of the present invention provides a communication method, where the method includes: the network device sends the first signaling to the first terminal device, where the first signaling is used to indicate that the first terminal device performs the occupation on the unlicensed spectrum.
  • the unlicensed frequency band listens to the LBT process first, and sends the uplink information in the first time length on the unlicensed frequency band; the network device receives the uplink information from the first terminal device in the unlicensed spectrum for the first time length; the first The length of time is a part of the maximum channel occupation time obtained by the first terminal device on the unlicensed spectrum, and the first time length is less than the maximum channel occupation time.
  • the network device can schedule the first terminal device to assist in preempting the unlicensed frequency band, and specify the length of the uplink transmission time of the first terminal device, so that the length of the remaining available part in the MCOT time of the first terminal device is known.
  • the device or other terminal device can utilize the remaining available portion for data transmission, reducing transmission delay including downlink transmission.
  • the uplink information includes uplink data or specified information; and the first time length is a preset value, or the first time length is a semi-statically configured value through high layer signaling; or the first time length is Notified by physical layer signaling. That is, when the first terminal includes uplink data to be sent, the uplink data may be sent by using the first time length. When the first terminal does not include uplink data to be sent, the specified information may be sent by using the first time length. Thereby, valuable information can be transmitted using the first time length.
  • the method before the network device sends the first signaling to the first terminal device, the method further includes: determining, by the network device, that the first signaling is used to indicate that the first terminal device sends the uplink data or the specified information; When the first terminal device has uplink data to be sent, the first signaling is used to indicate that the first terminal device uses the unlicensed spectrum to send uplink data in the first time length; when the first terminal device does not need to send uplink data, The first signaling is used to instruct the first terminal device to use the unlicensed spectrum to transmit the designated information within the first time length.
  • the type of information specified is channel state information, measurement report, buffer status report, uplink reference signal or padding bits.
  • the first signaling includes at least one bit for indicating at least one of the following: an initiation time K1 of the uplink LBT process, and an LBT process priority, for transmitting the uplink information. a set of subcarriers, the first length of time, and a type of the specified information.
  • the second time length is after the first time length, and the sum of the second time length and the first time length is less than or equal to the maximum channel occupation time obtained by the first terminal device on the unlicensed spectrum.
  • the network device sends the second downlink control information by using the licensed frequency band, where the network device uses the licensed frequency band to send the second downlink control information before the end time of the first time length; or
  • the standby licensed band transmits the second downlink control information before the end of the second time length.
  • the third time length is after the first time length, and the sum of the third time length and the first time length is less than or equal to the maximum channel occupation time; or the second time length After the first time length, the third length is after the second time length, and the sum of the third time length, the second time length and the first time length is less than or equal to that obtained by the first terminal device on the unlicensed spectrum. Maximum channel occupancy time.
  • the method further includes: performing, by the network device, a downlink short time LBT process.
  • the processor is further configured to use, by the transceiver, the first time length on the unlicensed frequency band Receiving, by the first terminal device, the uplink information, where the first time length is a part of a maximum channel occupation time obtained by the first terminal device on the unlicensed frequency band, and the first time length Less than the maximum channel occupation time.
  • the uplink information includes uplink data or specified information; and the first time length is a preset value, or the first time length is a value semi-statically configured by high layer signaling; Or the first time length is notified by physical layer signaling.
  • the processor is further configured to: before sending the first signaling to the first terminal device, determine that the first signaling is used to instruct the first terminal device to send uplink data or specified information; When the first terminal device has uplink data to be sent, the first signaling is used to instruct the first terminal device to use the unlicensed spectrum to send uplink data in a first time length; when the first terminal When the device does not need to send uplink data, the first signaling is used to instruct the first terminal device to use the unlicensed spectrum to send the specified information within a first time length.
  • the type of the specified information is channel state information, a measurement report, a buffer status report, an uplink reference signal, or a padding bit.
  • the first signaling includes at least one bit for indicating at least the following information A: an uplink time to first listen to the initiation time of the LBT process, and a priority of the LBT process, the set of subcarriers for transmitting the uplink information, the first time length, and the type of the specified information.
  • the first time length end time is K2, and the second time length starts at K3, and the time K2 is separated from the time K3 by M1 OFDM symbol lengths, and M1 is greater than 0.
  • the integer is K2
  • the second time length is after the first time length, and the sum of the second time length and the first time length is less than or equal to the maximum channel occupation time.
  • the second downlink control information is used to schedule the first terminal device or the second terminal device or the third terminal device to use the unlicensed frequency band preempted by the first terminal device to perform uplink in a third time length. data transmission.
  • the second downlink control information is sent by the transceiver using the licensed frequency band before the end of the second time length.
  • the third time length is after the first time length, and the sum of the third time length and the first time length is less than or equal to the maximum channel occupation time.
  • the second time length is after the first time length
  • the third intermediate length is after the second time length
  • the third time length, the second time length and the The sum of the first time lengths is less than or equal to the maximum channel occupation time.
  • the processor further uses Under, proceed Short-term LBT process.
  • the embodiment of the present invention provides a communication method, where the method includes: receiving, by a first terminal device, first signaling sent by a network device, where the first signaling is used to indicate that the first terminal device is used on an unlicensed spectrum.
  • the network device can schedule the first terminal device to assist in preempting the unlicensed frequency band, and specify the length of the uplink transmission time of the first terminal device, so that the length of the remaining available part in the MCOT time of the first terminal device is known.
  • the device or other terminal device can utilize the remaining available portion for data transmission, reducing transmission delay including downlink transmission.
  • the first terminal device sends the uplink information in the first time length through the unlicensed frequency band, including:
  • the first terminal device When the first signaling is used to indicate that the first terminal device sends the uplink data in the first time length by using the unlicensed spectrum, the first terminal device sends the uplink data in the first time length through the unlicensed frequency band;
  • the method further includes:
  • the first terminal device When the first terminal device does not need to send uplink data, the first terminal device sends the designated information in the first time length through the unlicensed frequency band.
  • the method further includes: after the first time length, the first terminal device uses the unlicensed frequency band to receive the first downlink control information and the downlink data from the network device in the second time length,
  • the licensed frequency band is an unlicensed frequency band for transmitting the uplink information by the first terminal device, where the first downlink control information is used to schedule the first terminal device or the second terminal device to receive the downlink data in the second time length by using the unlicensed frequency band.
  • the downlink data to be sent by the network device can be sent by using the MCOT of the unlicensed frequency band preempted by the first terminal device, which reduces the transmission delay of the downlink data.
  • the first time length end time is K2
  • the second time length start time is K3
  • the time K2 is separated from the time K3 by M1 OFDM symbol lengths
  • M1 is an integer greater than 0.
  • the second time length is after the first time length, and the sum of the second time length and the first time length is less than or equal to the maximum channel occupation time obtained by the first terminal device.
  • the processor is configured to receive, by using the transceiver, first signaling sent by a network device, where the first signaling is used to indicate that the first terminal device performs an interception on an unlicensed spectrum for occupying an unlicensed frequency band. And transmitting an uplink information in a first time length on the unlicensed frequency band; the processor is further configured to send, by using the transceiver, uplink information in the unlicensed frequency band for a first time length
  • the first time length is a part of a maximum channel occupation time obtained by the first terminal device on the unlicensed spectrum, and the first time length is less than the maximum channel occupation time.
  • the uplink information includes uplink data or specified information; and the first time length is a preset value, or the first time length is a value semi-statically configured by high layer signaling; Or the first time length is notified by physical layer signaling.
  • the type of the specified information is channel state information, a measurement report, a buffer status report, an uplink reference signal, or a padding bit.
  • the first signaling includes at least one bit for indicating at least one of the following: an initiation time of the uplink LBT process, and an LBT process priority for transmitting the uplink.
  • the processor is configured to use the transceiver for the first time length on the unlicensed frequency band. Before sending the uplink information, it also includes:
  • the processor is configured to determine whether there is uplink data that needs to be sent at a starting time of the first time length; wherein, when the first terminal device has uplink data to be sent, the processor is configured to pass the transceiver The specified information and the uplink data are sent in the first time length of the licensed frequency band; when the first terminal device does not need to send the uplink data, the processor is configured to send, by using the transceiver, the first time length on the unlicensed frequency band. Specify information.
  • the processor is further configured to: after the first time length, receive, by the transceiver, the first time from the network device by using the unlicensed frequency band by using the unlicensed frequency band
  • the downlink control information and the downlink data where the unlicensed frequency band is an unlicensed frequency band in which the first terminal device sends the uplink information, where the first downlink control information is used to schedule the first terminal device or the second
  • the terminal device uses the unlicensed frequency band to receive downlink data for a second time length.
  • the first time length end time is K2, and the second time length starts at K3, and the time K2 is separated from the time K3 by M1 OFDM symbol lengths, and M1 is greater than 0.
  • the integer is K2
  • the second time length is after the first time length, and the sum of the second time length and the first time length is less than or equal to the maximum channel occupation time.
  • an embodiment of the present invention provides a computer storage medium, which is used to store computer software instructions used by the terminal device, and includes program instructions designed to execute the foregoing aspects.
  • an embodiment of the present invention provides a computer storage medium, which is used to store computer software instructions used by the network device, and includes program instructions designed to execute the foregoing aspects.
  • 1 is a schematic diagram of a network system of an unlicensed spectrum coexisting with WIFI;
  • FIG. 3 is a schematic structural diagram of a communication device according to an embodiment of the present invention.
  • 4a is a schematic flowchart of a communication method according to an embodiment of the present invention.
  • FIG. 5 is a schematic flowchart of another communication method according to an embodiment of the present invention.
  • FIG. 5b is a schematic diagram showing the timing relationship of another communication method according to an embodiment of the present invention.
  • FIG. 6 is a schematic flowchart of still another communication method according to an embodiment of the present invention.
  • FIG. 6b is a schematic diagram showing the timing relationship of still another communication method according to an embodiment of the present invention.
  • FIG. 7 is a schematic structural diagram of another network device and a terminal device according to an embodiment of the present invention.
  • the present invention is applicable to wireless cellular communication network systems that use unlicensed spectrum communications.
  • LTE Long Term Evolution
  • LAA licensed spectrum assisted access
  • eLAA Enhanced Licensed Assisted Access
  • FeLAA further enhanced licensed spectrum assisted access
  • communication systems using unlicensed spectrum in 5G communication systems and MulteFire systems operating independently in unlicensed spectrum.
  • the embodiment of the present invention is exemplified by the eLAA system of the LTE, and does not constitute a limitation of the technical solution provided by the embodiment of the present invention.
  • Those skilled in the art may know that with the evolution of the network architecture and the emergence of a new service scenario, the present invention The technical solutions provided by the embodiments are equally applicable to similar technical problems.
  • the terminal device may also be referred to as a user equipment (User Equipment, UE), a mobile station (Mobile Station, MS), a mobile terminal (Mobile Terminal), etc., and the terminal device may be wireless.
  • the access network (Radio Access Network, RAN) communicates with one or more core networks.
  • the terminal device is a device with wireless transceiver function, which can be deployed on land, including indoor or outdoor, handheld or on-board; Can be deployed on the water (such as ships); it can also be deployed in the air (such as airplanes, balloons, satellites, etc.).
  • the terminal device may be a mobile phone, a tablet (Pad), a computer with wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, and industrial control ( Wireless terminal in industrial control, wireless terminal in self driving, wireless terminal in remote medical, wireless terminal in smart grid, transportation safety A wireless terminal, a wireless terminal in a smart city, a wireless terminal in a smart home, and the like.
  • a network device (for example, network device 201) is a device deployed in a radio access network to provide a wireless communication function for a terminal device.
  • the network device may include various forms of macro base stations, micro base stations (also referred to as small stations), relay stations, access points, and the like.
  • the network device may be a Base Transceiver Station (BTS) in GSM or CDMA, or may be a base station (NodeB, NB) in WCDMA, or may be an evolved Node B (eNB or e in LTE or eLTE).
  • BTS Base Transceiver Station
  • NodeB NodeB
  • NB evolved Node B
  • eNB evolved Node B
  • -NodeB also It may be a next generation mobile network, such as a base station gNB ((next) generation NodeB) in 5G (fifth generation).
  • FIG. 1 shows the network system in which the LAA terminal device and the WiFi device coexist on the unlicensed spectrum.
  • the LAA terminal device accessing the unlicensed spectrum needs to use the Listen Before Talk (LBT) mechanism to monitor and detect the channel idle state.
  • LBT Listen Before Talk
  • the LBT channel preemption mechanism includes a Frame Based (FB) based LBT mechanism and a Load Based (LB) based LBT mechanism. class.
  • FB LBT Frame Based
  • LB Load Based LBT mechanism. class.
  • the terminal device/network device follows the periodic radio frame structure and can only start transmitting data at the start of the radio frame.
  • An FB LBT cycle includes a Clear Channel Assessment (CCA) time, a channel occupation time, and an idle time.
  • the LBT period is fixed.
  • the CCA time is located at the beginning of each idle channel detection period, that is, the unlicensed band is monitored.
  • a fixed time if the received signal energy is lower than the decision threshold in the listening frequency during the listening time, the channel is considered to be idle to occupy the channel, otherwise the channel is considered to be busy and cannot occupy the channel. If the channel is busy during the CCA time, the data cannot be transmitted within the subsequent channel occupation time. It is necessary to wait until the initial subframe of the next cycle performs CCA, and then judge whether the channel can be occupied.
  • the terminal device In the LB LBT process, the terminal device has no fixed LBT cycle, and the LBT process starts only when there is data transmission.
  • the terminal device first determines whether the channel is idle according to the regulations; if the channel is occupied, the CCA is continuously performed according to the regulations until the channel is idle; if the channel is idle, a random backoff window of the random time length is generated (the minimum time granularity of the competition backoff window is 9us). Within this contention retreat window, the device continues to listen to unlicensed bands.
  • the device When the contention window is closed, if the channel is idle, the device starts to occupy the channel to transmit data; if the channel is occupied during the contention avoidance process, the competition backoff process is suspended, and the CCA is performed according to the regulations until the channel is idle again to continue the competition backoff. process.
  • the terminal device/network device does not have the limitation of the radio frame boundary.
  • LBT mechanisms Two types are used in the 3Gpp standard.
  • the standard is called Category 4 (Category 4, Cat. 4) LBT.
  • the Cat.4 LBT can be used as a network device on a Physical Downlink Shared Channel (PDSCH), a Physical Downlink Control Channel (PDCCH), and a Physical Uplink Shared Channel (PUSCH). Preempt the LBT mechanism of the unlicensed band before sending the message.
  • the 3Gpp standard is called Type2 LBT.
  • a large amount of downlink data on a network device needs to be transmitted through an unlicensed frequency band, and there is a case where the downlink channel is difficult to be preempted or a situation in which the channel needs to be preempted multiple times.
  • a plurality of terminal devices in the coverage area need to send uplink data, and the network device needs to compete with multiple terminal devices to preempt the use rights of the unlicensed frequency band, so that the time required for the network device to perform the LBT process becomes longer, and the network device sends the downlink.
  • the data has a large delay; the length of time that the network device can send data after preempting the unlicensed band cannot exceed the upper limit of the time limit specified by the regulations.
  • the network device needs to perform the channel preemption process multiple times to complete the downlink data transmission, which causes the delay of the downlink data of the network device to increase; and the operation of the channel preemption for multiple terminal devices independently, each terminal The times when the device completes the preemption are different.
  • the complexity of uplink resource allocation increases.
  • the LAA system has not yet designed a solution to these problems.
  • the embodiment of the present invention provides a communication method, and the network device centrally controls the terminal device to preempt Unlicensed frequency band and limit the length of time that the terminal device transmits uplink.
  • the network device can accurately know the remaining time of the maximum channel occupancy time (MCOT) of the terminal device, so that the downlink data or scheduling can be accurately scheduled, because the network device limits the length of the uplink transmission when scheduling the terminal device.
  • MCOT maximum channel occupancy time
  • Other terminal devices that need to send data use the remaining time to send data.
  • the network device For the network device to use the remaining time of the MCOT, it is equivalent to increasing the probability that the network device obtains the unlicensed band occupancy right, which alleviates the pressure of downlink data transmission. Further, for the network device to schedule other terminal devices that need to send data to use the remaining time of the MCOT, good spectrum utilization efficiency can be achieved, and the number of terminal devices in the cell that use the Cat.4 LBT process to preempt the unlicensed band is reduced, and the number of terminals is reduced. The complexity of network device scheduling increases the probability of successful preemption of a single terminal device and reduces the access delay caused by Cat.4 LBT.
  • the uplink and downlink transmission processes on the unlicensed spectrum in the LAA, eLAA, and FeLAA systems may be described as: the network device selects one or more unlicensed frequencies on the unlicensed spectrum (eg, 5150-5350 MHz) according to the network configuration and device capabilities. As the working frequency of the secondary cell (or called secondary cell). It should be understood that the unlicensed spectrum is a free shared frequency range according to national or regional regulations; the unlicensed spectrum is divided into several frequency bands according to 10MHz or 20MHz for different devices; the center frequency of each frequency band is called the working frequency point.
  • the unlicensed spectrum is a free shared frequency range according to national or regional regulations; the unlicensed spectrum is divided into several frequency bands according to 10MHz or 20MHz for different devices; the center frequency of each frequency band is called the working frequency point.
  • the network device periodically broadcasts the DRS signal in the form of Type 2 LBT, and the terminal device blindly detects the DRS signal in the unlicensed spectrum, and determines the working frequency point, the cell ID, and the frame boundary timing of the secondary cell.
  • the terminal device reports the access information through the primary cell to complete the initial access.
  • FIG. 2 shows an application scenario in the embodiment of the present invention, in which the network device 201 includes the terminal devices 211-214 that are within the coverage of the network device 201 and communicate with the network device 201.
  • the terminal devices 211-214 are terminal devices that have completed initial access unless otherwise specified.
  • the network device 201 performs a Cat. 4 LBT process to preempt the channel, and then transmits the downlink information.
  • the terminal device 211-214 knows the frame boundary of the LAA system secondary cell, performs blind detection according to the LAA downlink frame structure, and determines whether the current frame has the signal of the network device 201.
  • the terminal device 211-214 If the signal of the network device 201 is detected, processing is performed according to the downlink data receiving procedure of the legacy LTE (demodulation PDCCH, PDSCH, etc.); if the signal of the network device 201 is not detected, waiting for the next radio frame to arrive for blind detection again .
  • the terminal device 211-214 When the terminal device 211-214 has uplink data to be transmitted, the terminal device reports an uplink data transmission request (SR) through the primary cell.
  • the network device 201 configures parameters of the uplink data channel, including the type of the LBT, the time-frequency resource, and the like, by the primary cell or the secondary cell to the terminal device that reports the SR.
  • the terminal device 211-214 performs the LBT process according to the configuration information, and starts to send the uplink data after the LBT succeeds.
  • a network device/terminal device that uses the Cat.4 LBT process to preempt an unlicensed band can transmit signals on an unlicensed band.
  • the length of transmission ie, the occupied time of the channel
  • the maximum channel occupancy time specified by the regulations Maximum Channel Occupancy Time, MCOT
  • the channel occupation time of the network device/terminal device is calculated from the time when the data is actually transmitted.
  • the network device 201 and the terminal devices 211-214 may perform data communication on the unlicensed spectrum.
  • the scenario may be LAA, eLAA, FeLAA system in LTE, and unlicensed spectrum in the 5G communication system. (eg 5150-5350MHz) communication system, MulteFire system working independently in unlicensed spectrum, etc.
  • the network device 201 covers a range in which the primary cell operating on the licensed spectrum and the secondary cell operating on the unlicensed spectrum, and the network devices 201 of the primary cell and the secondary cell may correspond to the same Or two different physical sites (for example, macro base station and micro base station), and different sites use the X2 protocol for communication.
  • the terminal devices 211-214 access the unlicensed frequency band through the secondary cell.
  • the terminal devices 211-214 may be 1) terminal devices having data to transmit; 2) terminal devices requiring retransmission of data; 3) idle terminal devices having no uplink data.
  • FIG. 3 is a schematic block diagram of a wireless device 800 and a wireless device 900 according to an embodiment of the present invention.
  • Wireless device 800 and wireless device 900 can be used to implement the methods of various embodiments of the present invention.
  • the wireless device 800 may be the network device 201 in FIG. 2 or may be a component of the network device 201 that implements a communication function.
  • the wireless device 900 may be the terminal devices 211-214 in FIG. 2, or may be components in which the terminal devices 211-214 implement communication functions.
  • Wireless devices 800, 900 include processors 810, 910, respectively.
  • the processor 810 is configured to generate a baseband signal carrying information to be transmitted, and to process the received baseband signal.
  • the wireless devices 800, 900 can also include transceivers 820, 920 that are coupled to the processors 810, 910 for processing the baseband signals generated by the processors 810, 910 for conversion to radio frequency signals. And processing the radio frequency signal received through the antenna to be converted into a baseband signal that the processor can process.
  • the wireless device 800 is a network device 201
  • the processor 810 and the transceiver 820 can be included.
  • the wireless device 900 is the terminal device 211-214
  • the processor 910 and the transceiver 920 may be included.
  • the network device 201 sends the first signaling to the first terminal device, where the first terminal device may be one of the terminal devices 211-214 in FIG. 2, where the first signaling is used to indicate that the first terminal device performs on the unlicensed spectrum.
  • An LBT process for occupying an unlicensed frequency band that is, a Cat.4 LBT process, and transmitting uplink information in the first time length through the unlicensed frequency band, where the first time length is that the first terminal device is on the unlicensed spectrum
  • the obtained maximum channel occupancy time is part of the MCOT, and the first time length is less than the MCOT.
  • the first terminal device receives the first signaling, performs an LBT process for occupying the unlicensed frequency band on the unlicensed spectrum according to the indication of the first signaling, and sends the uplink information in the first time length by using the occupied unlicensed frequency band.
  • the network device receives the uplink information from the first terminal device in the unlicensed spectrum for a first time length, where the first time length is a part of the maximum channel occupation time obtained by the first terminal device on the unlicensed spectrum, and the first The length of time is less than the maximum channel occupation time.
  • FIG. 4a is a schematic diagram of communication of a communication method 300 according to an embodiment of the present invention.
  • the method 300 includes:
  • the first terminal device may be 1) a terminal device having data to be transmitted; 2) a terminal device that needs to retransmit data; and 3) an idle terminal device having no uplink data.
  • the network device can be based on the first terminal device Whether the SR or the last uplink data received by the primary cell or the secondary cell is complete or whether the last uplink data reception is correct determines whether the first terminal device in the secondary cell currently has uplink data to be transmitted.
  • the first signaling is used to instruct the first terminal device to use the unlicensed spectrum to send uplink data in a first time length
  • the first signaling is used to instruct the first terminal device to use the unlicensed spectrum to send the specified information within a first time length.
  • the type of the specified information may be channel status information, a measurement report, a buffer status report, an uplink reference signal, or a padding bit.
  • the first signaling includes at least one bit for indicating at least one of the following information: an initiation time K1 of the uplink LBT process, an LBT process priority, a subcarrier set for transmitting the uplink information, The first length of time and the type of the specified information.
  • one or more of the above information may be a value preset in the protocol, and need not be separately indicated in the first signaling. For example, to obtain a longer MCOT time, the communication system may be predefined to be scheduled.
  • the priority of the LBT process of the first terminal device shared by the MCOT is a lower value, such as 3 or 4;
  • the first time length is a duration in which the first terminal device sends the uplink information on the occupied unlicensed frequency band.
  • the first length of time is a preset value.
  • the first time length is a value that is semi-statically configured through high layer signaling
  • the first time length is notified by physical layer signaling.
  • the first signaling is further used to indicate the first time length, and the network device may be configured according to the data volume of the first terminal device. Dynamically indicates the first length of time.
  • the network device sends the first signaling to the first terminal device, where the first signaling is used to indicate that the first terminal device performs an LBT process for occupying an unlicensed frequency band, that is, a Cat.4 LBT process, on the unlicensed spectrum, and Transmitting, by the unlicensed frequency band, uplink information, where the first time length is a part of a maximum channel occupation time MCOT obtained by the first terminal device on the unlicensed spectrum, and the first time length is less than the MCOT;
  • the first signaling may be physical layer signaling, and may be sent through a licensed frequency band or through an unlicensed frequency band.
  • the first signaling indicates that the first terminal device sends the designation information.
  • the first terminal device initiates the Cat.4 LBT process at time K1. If the first terminal device generates uplink data to be sent before or during the Cat.4 LBT, the occupied unlicensed band is in the first time length. The specified information and the uplink data are sent in the first time; if the first terminal device does not need to send the uplink data after the end of the Cat.4 LBT process, the specified information is sent in the first time length by using the occupied unlicensed frequency band;
  • the network device sends the first downlink control information and the downlink data in the second time length by using the unlicensed frequency band preempted by the first terminal device, and the unlicensed frequency band preempted by the first terminal device is the receiving An unlicensed frequency band in which the terminal device transmits uplink information;
  • the first downlink control information is used to schedule the first terminal device or the second terminal device to receive the downlink data in the second time length by using the unlicensed frequency band preempted by the first terminal device.
  • the second time length is located after the first time length, and the sum of the second time length and the first time length is less than or equal to the maximum channel occupation time obtained by the first terminal device in the unlicensed frequency band.
  • the processor 810 may send the first downlink control information and the downlink data in the second time length by using the unlicensed frequency band preempted by the first terminal device by the transceiver 820.
  • the network device first performs a short-time LBT, that is, a Type2 LBT process, and temporarily monitors the frequency band. If the Type2 LBT listening channel is idle, the network device starts to send downlink data.
  • a short-time LBT that is, a Type2 LBT process
  • the first terminal sends the uplink data or the specified information in the first time length, and passes the uplink control channel or the data channel. Feedback a status message.
  • the status information indicates whether the first terminal accepts the scheduling configuration of the uplink transmission time sharing of the network device. If the first terminal device feeds back the scheduling, the subsequent uplink sending sharing process may be performed, otherwise the uplink sending sharing process is terminated.
  • FIG. 4b is a timing diagram of a communication method 300 according to an embodiment of the present invention.
  • the first terminal device initiates the Cat.4 LBT process for preempting the unlicensed frequency band at time K1. After the LBT process succeeds, the uplink information is sent on the occupied unlicensed frequency band, and the duration of the uplink information sent by the first terminal device is the first time. Length: after the end of the first time length, the network device uses the remaining time of the MCOT obtained by the first terminal device, that is, the unlicensed frequency band preempted by the first terminal device is sent in the second time length after the first time length.
  • the line control information and the downlink data, and the sum of the second time length and the first time length is less than or equal to the MCOT obtained by the first terminal device.
  • the end time of the first time length is K2
  • the start time of the second time length is K3, due to the physical delay caused by the uplink and downlink handover of the network device, or the time required for the network device to perform the Type2 LBT process in the interval time, or The uplink timing advance, or other reason, the time K2 is separated from the time K3 by M1 OFDM symbol lengths, and M1 is an integer greater than 0;
  • the network device performs a Type 2 LBT process at intervals, and temporarily monitors the frequency band. in case When the Type2 LBT listening channel is idle, the network device starts to send downlink data.
  • the network device and the first terminal device perform the method 300, and the network device can schedule the first terminal device to preempt the unlicensed frequency band and instruct the first terminal device to send the uplink information for a first time length, and the network device uses the remaining MCOT of the first terminal device.
  • the time is that the downlink data is sent on the unlicensed frequency band preempted by the first terminal device, which is equivalent to scheduling the first terminal device to replace the network device to preempt the unlicensed spectrum.
  • the network device schedules the first terminal to preempt the unlicensed frequency band and shares the acquired information of the first terminal, where the network device has a large amount of downlink data to be sent, and the uplink data of the first terminal device is non-emergency data and the amount of data is small and scattered.
  • the remaining time of the MCOT thus, is equivalent to increasing the probability that the network device obtains the unlicensed band occupancy right, which alleviates the pressure of downlink data transmission.
  • the network device defines a first time length for the first terminal to send the uplink information, which can ensure that the network device obtains a downlink transmission time of a fixed length of time, implements a flexible ratio of uplink and downlink transmission, and improves communication efficiency of the network.
  • FIG. 5a and 5b show another embodiment of the present invention.
  • FIG. 5a is a schematic diagram of communication of a communication method 400 according to another embodiment of the present invention.
  • the method 400 includes:
  • the network device sends the first downlink control information and the downlink data in the second time length by using the unlicensed frequency band preempted by the first terminal device, where the first downlink control information is used to schedule the first terminal.
  • the device or the second terminal device receives the downlink data in the second time length by using the unlicensed frequency band preempted by the first terminal device.
  • the second time length is a part of the remaining time of the MCOT acquired by the first terminal device.
  • the processor 810 may send the first downlink control information and the downlink data in the second time length by using the unlicensed frequency band preempted by the first terminal device by the transceiver 820.
  • the network device first performs a Type2 LBT process to briefly monitor the frequency band. If the Type2 LBT listening channel is idle, the network device starts to send downlink data;
  • the network device sends the second downlink control information to the third terminal device in the second time length by using the unlicensed frequency band preempted by the first terminal device;
  • the second downlink control information includes at least one bit for indicating the following information.
  • the network device transmits the third control information before transmitting the second control information.
  • the third control information includes at least one bit for indicating a set of subcarriers for performing uplink data transmission and/or the third time length
  • the second control information includes at least one bit for indicating the third time length.
  • the starting moment is K4.
  • the network device sends the third downlink control information and the second downlink control information in the second time length by using the unlicensed frequency band preempted by the first terminal device. Since the licensed frequency band generally has available downlink transmission resources, the third downlink control information and the second downlink control information sent by using the licensed frequency band can be sent in a more timely manner, and the transmission time is more flexible. For example, the network device can use the licensed frequency band in the first The second downlink control information is sent before the second time length, so that the third terminal device can prepare the uplink transmission data in advance, which can shorten the interval between the downlink information sent by the network device and the uplink data sent by the third terminal device.
  • the third terminal device first performs a short-time LBT, that is, a Type2 LBT process, and temporarily monitors the frequency band. If the Type2 LBT listening channel is idle, the third terminal device starts to send uplink data.
  • the third time length is a duration length of the uplink data sent by the third terminal device;
  • FIG. 5b is a timing diagram of another communication method 400 according to an embodiment of the present invention.
  • the first terminal device initiates a Cat.4 LBT process for preempting the unlicensed frequency band at time K1.
  • the uplink information is sent to the network device on the occupied unlicensed frequency band, and the duration of the uplink information sent by the first terminal device is The first time length; after the end of the first time length, the network device uses a part of the remaining time of the MCOT obtained by the first terminal device, that is, the second time length after the first time length that the unlicensed frequency band preempted by the first terminal device is used Sending the first downlink control information and the downlink data to the second terminal device; optionally, after the first time length, the network device first performs a Type2 LBT process, and temporarily monitors the frequency band.
  • the network device starts to send the downlink data, and the network device schedules the third terminal device to send the uplink data to the network device by using the unlicensed frequency band preempted by the first terminal device for a third time length after the second time length, and the third time length
  • the sum of the second time length and the first time length is less than or equal to the first terminal device.
  • the first time length end time is K2
  • the second time length starting time is K3
  • the time K2 is separated from the time K3 by M1 OFDM symbol lengths
  • M1 is an integer greater than 1
  • the second time length ending time is K5
  • the starting time of the time length is K4, the time K4 is separated from the time K5 by M2 OFDM symbol lengths, and M2 is an integer greater than 0;
  • the third terminal device performs a short-time LBT, that is, a Type 2 LBT process, to temporarily monitor the frequency band. If the Type 2 LBT listening channel is idle, the third terminal device starts to send. Uplink data
  • the network device defines a first time length that the first terminal sends the uplink information, where Ensure that the network device obtains a fixed length of time to send downlink information to achieve a flexible ratio of uplink and downlink transmission, thereby improving the communication efficiency of the network.
  • the third terminal device is configured to use the remaining time of the MCOT acquired by the first terminal device to send uplink data, where the network device has downlink data to be sent, and the terminal device needs to frequently send uplink data and each time the data volume is small.
  • FIG. 6a and 6b show a further embodiment of the present invention.
  • FIG. 6a is a schematic diagram of communication of a communication method 500 according to still another embodiment of the present invention.
  • the method 500 includes:
  • S501 is the same as step S301 of method 300
  • S502 is the same as step S302 of method 300
  • S503 is the same as step S303 of method 300, and details are not described herein;
  • the network device schedules the third terminal device to use the unlicensed frequency band preempted by the first terminal device to perform uplink data transmission in a third time length; wherein the third time length is in the first time length Thereafter, the sum of the third time length and the first time length is less than or equal to the maximum channel occupation time acquired by the first terminal device.
  • the processor 810 may schedule, by the transceiver 820, before the end of the first time length, the third terminal device to perform uplink data transmission in the third time length by using the unlicensed frequency band preempted by the first terminal device.
  • the second downlink control information includes at least one bit for indicating at least one of: a set of subcarriers for performing uplink data transmission, a third time length, and a start time K4 of a third time length;
  • the device uses the licensed spectrum to send the second downlink control information to the third terminal device before the end of the first time length, and instructs the third terminal device to perform the uplink data transmission in the third time length by using the unlicensed frequency band preempted by the first terminal device.
  • the network device uses the licensed spectrum to send the second downlink control information, and does not need to occupy the MCOT preempted by the first terminal device on the unlicensed spectrum, and the network device can use the remaining MCOT as much as possible.
  • the time is allocated to the third terminal device.
  • the second downlink control information includes at least one bit for indicating a start time K4 of the third time length; at this time, the network device uses the licensed spectrum to send the third before sending the second downlink control information.
  • the downlink control information is sent to the third terminal device, and the third downlink control information includes at least one bit for indicating a set of subcarriers for performing uplink data transmission and/or the third time length.
  • the third terminal device starts the group packet according to the third time length information, and waits for the second downlink control information to indicate the start time K4 of the third time length; the network device sends before the first time length end time K2.
  • the second downlink control information is sent to the third terminal device, and the interval between the time K2 and the time K4 is greater than 0, and the integer OFDM symbol length is greater than 0;
  • the third terminal device performs uplink data transmission in a third time length by using the unlicensed frequency band preempted by the first terminal device.
  • the third terminal device performs a short-time LBT, that is, a Type 2 LBT process, to temporarily monitor the frequency band. If the Type 2 LBT listening channel is idle, the third terminal device starts to send uplink data.
  • the third time length is a duration length of the third terminal device sending the uplink data.
  • FIG. 6b is a timing diagram of still another communication method 500 according to an embodiment of the present invention.
  • the device initiates the Cat.4 LBT process for preempting the unlicensed frequency band at time K1. After the LBT process succeeds, the device sends the uplink information to the network device in the unlicensed frequency band.
  • the duration of the uplink information sent by the first terminal device is the first time.
  • the network device schedules the third terminal device to send the uplink data to the network device by using the unlicensed frequency band preempted by the first terminal device for the third time length after the first time length, and the third time length and the first time length And less than or equal to the MCOT acquired by the first terminal device.
  • the first time length end time is K2
  • the third time length starting time is K4
  • the time K4 is separated from the time K2 by M3 OFDM symbol lengths
  • M3 is an integer greater than 0;
  • the third terminal device performs a short-time LBT, that is, a Type2 LBT process, to temporarily monitor the frequency band. If the Type2 LBT listening channel is idle, the third terminal device starts to send. Upstream data.
  • a short-time LBT that is, a Type2 LBT process
  • the network device, the first terminal device, and the third terminal device perform the method 500, and the network device schedules the first terminal device to preempt the unlicensed frequency band and instructs the first terminal device to send the uplink information for a first time length, and the network device defines the first terminal.
  • the first time length of the uplink information is sent, so that the third terminal device can obtain the uplink transmission time of the fixed time length, and realize the flexible ratio of the transmission time of the first terminal device and the third terminal device, thereby improving the communication efficiency of the network.
  • the network device schedules the third terminal device to use the remaining time of the MCOT acquired by the first terminal device to send uplink data.
  • the terminal device needs to frequently send uplink data, and each time the amount of data is small, a good spectrum can be achieved. Utilize efficiency, reduce the number of terminal devices in the cell that use the Cat.4LBT process to preempt the unlicensed band, reduce the access delay caused by Cat.4 LBT, reduce the complexity of network device scheduling, and increase the single terminal device. The probability of preempting the unlicensed band.
  • FIG. 7 shows a schematic block diagram of another wireless device 600 and wireless device 700 that implements an embodiment of the present invention.
  • the wireless device 600 can be a network device in the foregoing embodiments of the present invention, or a component in the network device.
  • the wireless device 600 includes a processor 610, a transceiver 630, and a memory 620 for storing computer-executable program code or instructions.
  • the transceiver 630 is configured to transmit and receive signals, which may be analog radio frequency signals, or digital radio frequency signals, or radio signals.
  • the processor 610 reads and executes program code or instructions in the memory 620. When program code or instructions in memory 620 are executed by the processor 610, the controlling wireless device 600 implements the functions of the network device in the above method.
  • the wireless device 700 can be the terminal device in the foregoing embodiment of the present invention, or a component in the terminal device.
  • the wireless device 700 includes a processor 710, a transceiver 730, and a memory 720 for storing computer-executable program code or instructions.
  • the transceiver 730 is configured to transmit and receive signals, which may be analog radio frequency signals, or digital radio frequency signals, or radio signals.
  • the processor 710 reads and executes program code or instructions in the memory 720. When program code or instructions in memory 720 are executed by the processor 610, the controlling wireless device 700 implements the functions of the terminal device in the above method.
  • FIG. 7 only shows a simplified design of wireless devices 600 and 700.
  • wireless devices 600 and 700 can include any number of transceivers, processors, memories, etc., and all structures that can implement the present invention are within the scope of the present invention.
  • An embodiment of the present invention further provides a communication device, where the communication device includes a processor and a memory connected to the processor through a line, and the memory may be built in the processor or externally External to the processor.
  • the processor includes an input and output interface, and the input and output interfaces are used for transmitting signals and receiving signals.
  • the transmitted signal may carry information transmitted by the device to other communication devices, and the received signal may carry information received from other communication devices.
  • the signal output by the input/output interface may be, for example, an unmodulated baseband signal, or a digitally modulated baseband signal, or an analog modulated baseband signal, or a modulated mid/radio signal.
  • the memory is used to store instructions.
  • the processor is operative to read and execute instructions in the memory to control the communication device to perform the methods of the previous embodiments.
  • the processor for performing the functions of the above network device and terminal device device of the present invention may be a central processing unit (CPU), a general purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), and a field programmable gate array ( FPGA) or other programmable logic device, transistor logic device, hardware component, or any combination thereof. It is possible to implement or carry out the various illustrative logical blocks, modules and circuits described in connection with the present disclosure.
  • the processor may also be a combination of computing functions, for example, including one or more microprocessor combinations, a combination of a DSP and a microprocessor, and the like.
  • the steps of a method or algorithm described in connection with the present disclosure may be implemented in a hardware, or may be implemented by a processor executing software instructions.
  • the software instructions may be comprised of corresponding software modules, which may be stored in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, removable hard drive, CD-ROM, or any other form of memory known in the art.
  • An exemplary storage medium is coupled to the processor to enable the processor to read information from, and write information to, the storage medium.
  • the functions described herein can be implemented in hardware, software, firmware, or any combination thereof.
  • the functions may be stored in a computer readable medium or transmitted as one or more instructions or code on a computer readable medium.
  • Computer readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one location to another.
  • a storage medium may be any available media that can be accessed by a general purpose or special purpose computer.
  • the present invention also provides an apparatus (e.g., an integrated circuit, a wireless device, a circuit module, etc.) for implementing the above method.
  • Implementations of the devices described herein may be stand-alone devices or may be part of a larger device.
  • the device may be (i) a self-contained IC; (ii) a set having one or more 1Cs, which may include a memory IC for storing data and/or instructions; (iii) an RFIC, such as an RF receiver or RF transmitter (iv) an ASIC, such as a mobile station modem; (v) a module that can be embedded in other devices; (vi) a receiver, a cellular phone, a wireless device, a handset, or a mobile unit; (vii) other, etc. Wait.
  • the method and apparatus provided by the embodiments of the present invention may be applied to a terminal device or a network device (which may be collectively referred to as a wireless device).
  • the terminal device or network device or wireless device may include a hardware layer, an operating system layer running on the hardware layer, and an application layer running on the operating system layer.
  • the hardware layer includes hardware such as a central processing unit (CPU), a memory management unit (MMU), and a memory (also referred to as main memory).
  • the operating system may be any one or more computer operating systems that implement business processing through processes, for example, a Linux operating system, a Unix operating system, an Android operating system, iOS operating system or windows operating system, etc.
  • the application layer includes applications such as browsers, contacts, word processing software, and instant messaging software.
  • the embodiment of the present invention does not limit the specific structure of the execution body of the method, as long as the transmission signal according to the embodiment of the present invention can be executed by running a program recording the code of the method of the embodiment of the present invention.
  • the method can be communicated.
  • the execution body of the method for wireless communication in the embodiment of the present invention may be a terminal device or a network device, or a function module that can call a program and execute a program in the terminal device or the network device.
  • a computer readable medium may include, but is not limited to, a magnetic storage device (eg, a hard disk, a floppy disk, or a magnetic tape, etc.), such as a compact disc (CD), a digital versatile disc (DVD). Etc.), smart cards and flash memory devices (eg, erasable programmable read-only memory (EPROM), cards, sticks or key drivers, etc.).
  • a magnetic storage device eg, a hard disk, a floppy disk, or a magnetic tape, etc.
  • CD compact disc
  • DVD digital versatile disc
  • Etc. smart cards and flash memory devices (eg, erasable programmable read-only memory (EPROM), cards, sticks or key drivers, etc.).
  • various storage media described herein can represent one or more devices and/or other machine-readable media for storing information.
  • the term "machine-readable medium” may include, without limitation, a wireless channel and various other mediums capable of storing, containing, and/or carrying instructions and/or data.
  • the above embodiments it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof.
  • software it may be implemented in whole or in part in the form of a computer program product.
  • the computer program product includes one or more computer instructions.
  • the computer program instructions When the computer program instructions are loaded and executed on a computer, the processes or functions described in accordance with embodiments of the present invention are generated in whole or in part.
  • the computer can be a general purpose computer, a special purpose computer, a computer network, or other programmable device.
  • the computer instructions can be stored in a computer readable storage medium or transferred from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions can be from a website site, computer, server or data center Transfer to another website site, computer, server, or data center by wire (eg, coaxial cable, fiber optic, digital subscriber line (DSL), or wireless (eg, infrared, wireless, microwave, etc.).
  • the computer readable storage medium can be any available media that can be accessed by a computer or a data storage device such as a server, data center, or the like that includes one or more available media.
  • the usable medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a DVD), or a semiconductor medium (such as a solid state disk (SSD)).
  • the size of the sequence numbers of the foregoing processes does not mean the order of execution sequence, and the order of execution of each process should be determined by its function and internal logic, and the present invention should not be The implementation of the embodiments constitutes any limitation.
  • the disclosed systems, devices, and methods may In other ways.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
  • the functions may be stored in a computer readable storage medium if implemented in the form of a software functional unit and sold or used as a standalone product. Based on such understanding, the technical solution of the embodiments of the present invention, or the part contributing to the prior art or the part of the technical solution, may be embodied in the form of a software product stored in a storage medium.
  • the instructions include a plurality of instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present invention.
  • the foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like. .

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Abstract

本发明实施例描述了一种通信方法和装置,用以解决网络设备抢占下行信道困难造成下行数据时延大的问题。该方法和装置中,网络设备向第一终端设备发送第一信令,第一信令用于指示第一终端设备在非授权频谱上进行用于占用非授权频段的先听后发LBT流程,并且在非授权频段上第一时间长度内发送上行信息;网络设备在非授权频谱上在第一时间长度内从第一终端设备接收上行信息;其中,第一时间长度为第一终端设备在非授权频谱上获得的最大信道占用时间的一部分,且第一时间长度小于所述最大信道占用时间。

Description

一种通信方法和装置 技术领域
本申请涉及无线通信技术领域,尤其涉及一种通信方法和装置。
背景技术
随着无线通信应用的飞速发展,用户对无线网络的容量和速率需求越来越高。尤其是在无线用户密集的热点地区(大型商场,体育场等),授权频谱很难同时为所有用户提供高质量的服务。此外,当前在全球范围内合适的频谱分配趋于紧张,运营商购买授权频段的成本也日渐昂贵。为了降低无线网络的频谱成本,缓解授权频段的业务压力,无线通信网络设计了非授权频谱上的长期演进(Long Term Evolution,LTE)通信系统。
授权频谱辅助接入(Licensed assisted access,LAA)系统是一种使用非授权频谱进行数据通信的长期演进(Long Term Evolution,LTE)系统。LAA系统使用先听后发(Listen before talk,LBT)的抢占机制获得非授权频段的信道占用权,获得信道占用权的终端设备/网络设备可以发送数据,发送数据时间长度不能超过最大信道占用时间(Maximum channel occupancy time,MCOT)。LBT抢占机制保证了非授权频段上LAA系统与Wifi系统共存的公平性。LAA终端设备和LAA网络设备在发送数据之前都须要进行LBT流程,抢占信道的LBT流程包括信道空闲评估(Clear Channel Assessment,CCA),即监听相应的非授权频段,如果在监听时间内频段内接收信号能量低于判决门限则认为信道空闲可以占用,否则认为信道忙碌不可以占用。
通常情况下,网络中的下行数据量远高于上行数据量,并且有些终端设备的待发送的上行数据量甚至不足以占用整个MCOT。而且在非授权频段上,终端设备的数量远大于网络设备的数量,因此,不仅由于大量终端设备频繁抢占非授权频段进行上行传输,造成网络设备或者有大量上行数据需要传输的终端设备难以抢占到非授权频段的占用权进行下行传输,从而导致数据传输的时延变大。而且具有较少上行数据发送的终端设备经过LBT流程抢占到非授权频段的占用权后,往往只利用了MCOT的一部分时长,造成非授权频段利用率较低。
发明内容
本发明实施例描述了一种通信方法和装置。用以解决网络设备抢占下行信道困难造成下行数据时延大的问题。
第一方面,本发明实施例提供一种通信方法,该方法包括网络设备向第一终端设备发送第一信令,第一信令用于指示第一终端设备在非授权频谱上进行用于占用非授权频段的先听后发LBT流程,并且在非授权频段上第一时间长度内发送上行信息;网络设备在非授权频谱上在第一时间长度内从第一终端设备接收上行信息;其中,第一 时间长度为第一终端设备在非授权频谱上获得的最大信道占用时间的一部分,且第一时间长度小于所述最大信道占用时间。通过本实施例提供的方案,网络设备可以调度第一终端设备协助抢占非授权频段,通过指定第一终端设备的上行发送时长,使得第一终端设备的MCOT时间内其余可用部分的长度可知,网络设备或其他终端设备可以利用该其余可用部分进行数据传输,降低了包括下行传输在内的传输时延。
在一种可能的设计中,上行信息包括上行数据或指定信息;且第一时间长度为预先设置的值,或者第一时间长度为通过高层信令半静态配置的值;或者第一时间长度是通过物理层信令通知的。也就是说,当所述第一终端包含待发送的上行数据时,可以利用所述第一时间长度发送该上行数据。当所述第一终端不包含待发送的上行数据时,可以利用所述第一时间长度发送指定信息。从而,可以充分利用所述第一时间长度发送有价值的信息。
在一种可能的设计中,在网络设备向第一终端设备发送第一信令之前,该方法还包括:网络设备确定第一信令用于指示第一终端设备发送上行数据或指定信息;其中,当第一终端设备有上行数据需要发送时,第一信令用于指示第一终端设备使用非授权频谱在第一时间长度内发送上行数据;当第一终端设备没有上行数据需要发送时,第一信令用于指示第一终端设备使用非授权频谱在第一时间长度内发送指定信息。在该种可能的设计中,指定信息的类型为信道状态信息,测量报告,缓存状态报告,上行参考信号或填充比特。
在一种可能的设计中,第一信令包括至少一个比特用于指示以下信息的至少一个:上行先听后发LBT流程的发起时刻K1、LBT流程优先级,用于发送所述上行信息的子载波集合、所述第一时间长度和所述指定信息的类型。
在一种可能的设计中,在第一时间长度之后,网络设备使用第一终端设备抢占的非授权频段在第二时间长度内发送第一下行控制信息和下行数据,第一终端设备抢占的非授权频段为接收第一终端设备发送上行信息的非授权频段;其中,第一下行控制信息用于调度第一终端设备或第二终端设备使用第一终端设备抢占的非授权频段在第二时间长度内接收下行数据。通过本实施例提供的方法,网络设备的待发送的下行数据可以利用第一终端设备抢占的非授权频段的MCOT进行发送,降低了下行数据的发送时延。
在该种可能的设计中,第一时间长度结束时刻为K2,第二时间长度的起始时刻为K3,由于上下行切换的物理时延,时刻K2与时刻K3间隔M1个OFDM符号长度,M1为大于0的整数。
在一种可能的设计中,第二时间长度位于第一时间长度之后,且第二时间长度与第一时间长度之和小于或等于第一终端设备在非授权频谱上获得的最大信道占用时间。
在一种可能的设计中,网络设备使用第一终端设备抢占的非授权频段在第二时间长度内发送第二下行控制信息;或者网络设备使用授权频段发送第二下行控制信息;其中,第二下行控制信息用于调度第一终端设备或第二终端设备或第三终端设备使用第一终端设备抢占的非授权频段在第三时间长度内进行上行数据传输。
在该种可能的设计中,网络设备使用授权频段发送第二下行控制信息包括:网络设备使用授权频段在第一时间长度结束时刻之前发送第二下行控制信息;或者网络设 备使用授权频段在第二时间长度结束时刻之前发送第二下行控制信息。
在该种可能的设计中,第二下行控制信息包括至少一个比特用于指示以下信息的至少一个:用于进行上行数据传输的子载波集合、所述第三时间长度和所述第三时间长度的起始时刻K4;或者,第二下行控制信息包括至少一个比特用于指示第三时间长度的起始时刻K4,且该方法还包括:在发送第二下行控制信息之前,网络设备发送第三下行控制信息,第三下行控制信息包括至少一个比特用于指示用于进行上行数据传输的子载波集合和/或所述第三时间长度。
在该种可能的设计中,第二时间长度结束时刻为K5,第三时间长度的起始时刻K4,时刻K4与时刻K5间隔M2个OFDM符号长度,M2为大于0的整数;或者,所述第一时间长度结束时刻为K2,所述第三时间长度的起始时刻K4,所述时刻K4与时刻K2间隔M3个OFDM符号长度,M3为大于0的整数。
在该种可能的设计中,第三时间长度位于所述第一时间长度之后,且第三时间长度与所述第一时间长度之和小于或等于所述最大信道占用时间;或第二时间长度位于第一时间长度之后,第三之间长度位于第二时间长度之后,且第三时间长度、第二时间长度与第一时间长度之和小于或等于第一终端设备在非授权频谱上获得的最大信道占用时间。
在一种可能的设计中,在第一时间长度之后,且在网络设备使用第一终端设备抢占的非授权频段发送第一下行控制信息之前,该方法还还包括:网络设备进行下行短时LBT流程。
第二方面,本发明实施例提供一种无线装置,包括处理器和与所述处理器连接的收发器。所述收发器用于发送或接收信号。所述处理器,用于通过收发器向第一终端设备发送第一信令,所述第一信令用于指示所述第一终端设备在非授权频谱上进行用于占用非授权频段的先听后发LBT流程,并且在所述非授权频段上第一时间长度内发送上行信息;所述处理器,还用于通过所述收发器在所述非授权频段上在第一时间长度内从所述第一终端设备接收所述上行信息;其中,所述第一时间长度为所述第一终端设备在所述非授权频段上获得的最大信道占用时间的一部分,且所述第一时间长度小于所述最大信道占用时间。
在一种可能的设计中,所述上行信息包括上行数据或指定信息;且所述第一时间长度为预先设置的值,或者所述第一时间长度为通过高层信令半静态配置的值;或者所述第一时间长度是通过物理层信令通知的。
在一种可能的设计中,所述处理器还用于在向第一终端设备发送第一信令之前,确定第一信令用于指示所述第一终端设备发送上行数据或指定信息;其中,当所述第一终端设备有上行数据需要发送时,所述第一信令用于指示所述第一终端设备使用非授权频谱在第一时间长度内发送上行数据;当所述第一终端设备没有上行数据需要发送时,所述第一信令用于指示所述第一终端设备使用非授权频谱在第一时间长度内发送指定信息。
在一种可能的设计中,所述指定信息的类型为信道状态信息,测量报告,缓存状态报告,上行参考信号或填充比特。
在一种可能的设计中,所述第一信令包括至少一个比特用于指示以下信息的至少 一个:上行先听后发LBT流程的发起时刻K1、LBT流程优先级,用于发送所述上行信息的子载波集合、所述第一时间长度和所述指定信息的类型。
在一种可能的设计中,所述处理器用于,在所述第一时间长度之后,通过所述收发器使用所述第一终端设备抢占的非授权频段在第二时间长度内发送第一下行控制信息和下行数据,所述第一终端设备抢占的非授权频段为接收所述第一终端设备发送上行信息的非授权频段;其中,所述第一下行控制信息用于调度所述第一终端设备或第二终端设备使用所述第一终端设备抢占的非授权频段在第二时间长度内接收下行数据。
在该种可能的设计中,所述第一时间长度结束时刻为K2,所述第二时间长度的起始时刻为K3,所述时刻K2与时刻K3间隔M1个OFDM符号长度,M1为大于0的整数。
在该种可能的设计中,所述第二时间长度位于所述第一时间长度之后,且所述第二时间长度与所述第一时间长度之和小于或等于所述最大信道占用时间。
在一种可能的设计中,所述处理器用于,通过所述收发器使用所述第一终端设备抢占的非授权频段在所述第二时间长度内发送第二下行控制信息;或者所述处理器用于,通过所述收发器使用授权频段发送第二下行控制信息;
其中,所述第二下行控制信息用于调度所述第一终端设备或所述第二终端设备或第三终端设备使用所述第一终端设备抢占的非授权频段在第三时间长度内进行上行数据传输。
在该种可能的设计中,通过所述收发器使用授权频段发送第二下行控制信息包括:通过所述收发器使用授权频段在所述第一时间长度结束时刻之前发送第二下行控制信息;或者通过所述收发器使用授权频段在所述第二时间长度结束时刻之前发送第二下行控制信息。
在该种可能的设计中,所述第二下行控制信息包括至少一个比特用于指示以下信息的至少一个:用于进行上行数据传输的子载波集合、所述第三时间长度和所述第三时间长度的起始时刻K4;或者,所述第二下行控制信息包括至少一个比特用于指示所述第三时间长度的起始时刻K4,且所述处理器还用于:在发送第二下行控制信息之前,通过所述收发器发送第三下行控制信息,所述第三下行控制信息包括至少一个比特用于指示用于进行上行数据传输的子载波集合和/或所述第三时间长度。
在该种可能的设计中,所述第二时间长度结束时刻为K5,所述第三时间长度的起始时刻K4,所述时刻K4与时刻K5间隔M2个OFDM符号长度,M2为大于0的整数;或者所述第一时间长度结束时刻为K2,所述第三时间长度的起始时刻K4,所述时刻K4与时刻K2间隔M3个OFDM符号长度,M3为大于0的整数。
在该种可能的设计中,所述第三时间长度位于所述第一时间长度之后,且所述第三时间长度与所述第一时间长度之和小于或等于所述所述最大信道占用时间;或所述第二时间长度位于所述第一时间长度之后,所述第三之间长度位于所述第二时间长度之后,且所述第三时间长度、所述第二时间长度与所述第一时间长度之和小于或等于所述所述最大信道占用时间。
在一种可能的设计中,在所述第一时间长度之后,且在所述收发器使用所述第一终端设备抢占的非授权频段发送第一下行控制信息之前,所述处理器还用于,进行下 行短时LBT流程。
第三方面,本发明实施例提供一种通信方法,该方法包括第一终端设备接收网络设备发送的第一信令,第一信令用于指示第一终端设备在非授权频谱上进行用于占用非授权频段的先听后发LBT流程,并且在所述非授权频段上第一时间长度内发送上行信息;第一终端设备根据第一信令在非授权频谱上进行用于占用非授权频段的LBT流程,并且通过所述非授权频段在第一时间长度内发送上行信息;其中,所述第一时间长度为第一终端设备在非授权频谱上获得的最大信道占用时间的一部分,且所述第一时间长度小于所述最大信道占用时间。通过本实施例提供的方案,网络设备可以调度第一终端设备协助抢占非授权频段,通过指定第一终端设备的上行发送时长,使得第一终端设备的MCOT时间内其余可用部分的长度可知,网络设备或其他终端设备可以利用该其余可用部分进行数据传输,降低了包括下行传输在内的传输时延。
在一种可能的设计中,第一终端设备通过非授权频段在第一时间长度内发送上行信息,包括:
当第一信令用于指示第一终端设备使用非授权频谱在第一时间长度内发送上行数据时,第一终端设备通过非授权频段在第一时间长度内发送上行数据;
当第一信令用于指示第一终端设备使用非授权频谱在第一时间长度内发送指定信息时,第一终端设备通过非授权频段在第一时间长度内发送上行信息之前,还包括:
第一终端设备确定在第一时间长度起始时刻是否有需要发送的上行数据;其中,
当第一终端设备有上行数据需要发送时,第一终端设备通过非授权频段在第一时间长度内发送指定信息和上行数据;
当第一终端设备没有上行数据需要发送时,所述第一终端设备通过非授权频段在第一时间长度内发送指定信息。
在一种可能的设计中,该方法还包括在第一时间长度之后,第一终端设备使用所述非授权频段在第二时间长度内从网络设备接收第一下行控制信息和下行数据,非授权频段为第一终端设备发送上行信息的非授权频段;其中,第一下行控制信息用于调度第一终端设备或第二终端设备使用所述非授权频段在第二时间长度内接收下行数据。通过本实施例提供的方法,网络设备的待发送的下行数据可以利用第一终端设备抢占的非授权频段的MCOT进行发送,降低了下行数据的发送时延。
在该种可能的设计中,第一时间长度结束时刻为K2,第二时间长度的起始时刻为K3,时刻K2与时刻K3间隔M1个OFDM符号长度,M1为大于0的整数。
在一种可能的设计中,第二时间长度位于第一时间长度之后,且第二时间长度与第一时间长度之和小于或等于第一终端设备获得的最大信道占用时间。
第四方面,提供一种无线装置,包括处理器和与所述处理器连接的收发器。
所述处理器用于通过所述收发器接收网络设备发送的第一信令,所述第一信令用于指示所述第一终端设备在非授权频谱上进行用于占用非授权频段的先听后发LBT流程,并且在所述非授权频段上第一时间长度内发送上行信息;所述处理器还用于通过所述收发器在所述非授权频段上在第一时间长度内发送上行信息;其中,所述第一时间长度为所述第一终端设备在所述非授权频谱上获得的最大信道占用时间的一部分,且所述第一时间长度小于所述最大信道占用时间。
在一种可能的设计中,所述上行信息包括上行数据或指定信息;且所述第一时间长度为预先设置的值,或者所述第一时间长度为通过高层信令半静态配置的值;或者所述第一时间长度是通过物理层信令通知的。
在一种可能的设计中,所述指定信息的类型为信道状态信息,测量报告,缓存状态报告,上行参考信号或填充比特。
在一种可能的设计中,所述第一信令包括至少一个比特用于指示以下信息的至少一个:上行先听后发LBT流程的发起时刻K1、LBT流程优先级,用于发送所述上行信息的子载波集合、所述第一时间长度和所述指定信息的类型。
在一种可能的设计中,所述处理器器还用于通过所述收发器在非授权频段上第一时间长度内发送上行信息,包括:当所述第一信令用于指示所述第一终端设备使用非授权频谱在第一时间长度内发送上行数据时,所述处理器用于通过所述收发器在非授权频段上第一时间长度内发送上行数据;
当所述第一信令用于指示所述第一终端设备使用非授权频谱在第一时间长度内发送指定信息时,所述处理器用于通过所述收发器在非授权频段上第一时间长度内发送上行信息之前,还包括:
所述处理器用于确定在第一时间长度起始时刻是否有需要发送的上行数据;其中,当所述第一终端设备有上行数据需要发送时,所述处理器用于通过所述收发器在非授权频段上第一时间长度内发送指定信息和上行数据;当所述第一终端设备没有上行数据需要发送时,所述处理器用于通过所述收发器在非授权频段上第一时间长度内发送指定信息。
在一种可能的设计中,所述处理器还用于,在所述第一时间长度之后,通过所述收发器使用所述非授权频段在第二时间长度内从所述网络设备接收第一下行控制信息和下行数据,所述非授权频段为所述第一终端设备发送上行信息的非授权频段;其中,所述第一下行控制信息用于调度所述第一终端设备或第二终端设备使用所述非授权频段在第二时间长度内接收下行数据。
在该种可能的设计中,所述第一时间长度结束时刻为K2,所述第二时间长度的起始时刻为K3,所述时刻K2与时刻K3间隔M1个OFDM符号长度,M1为大于0的整数。
在一种可能的设计中,所述第二时间长度位于所述第一时间长度之后,且所述第二时间长度与所述第一时间长度之和小于或等于所述最大信道占用时间。
第五方面,本发明实施例提供一种计算机存储介质,用于存储上述终端设备所用的计算机软件指令,其包含用于执行上述方面所设计的程序指令。
第六方面,本发明实施例提供一种计算机存储介质,用于存储上述网络设备所用的计算机软件指令,其包含用于执行上述方面所设计的程序指令。
第七方面,本发明实施例提供一种通信装置,该通信装置包括处理器和与所述处理器相连接的存储器,所述处理器包括输入输出接口,输入输出接口用于发送信号和接收信号,所述存储器用于存储指令,所述处理器用于读取并执行存储器中的指令以控制该通信装置执行本发明各实施例中的方法。
附图说明
图1是与WIFI共存的非授权频谱的网络系统的示意图;
图2是本发明实施例提供的一种应用场景示意图;
图3是本发明实施例提供的一种通信设备的结构示意图;
图4a是本发明实施例提供的一种通信方法的流程示意图;
图4b是本发明实施例提供的一种通信方法的时序关系示意图;
图5a是本发明实施例提供的另一种通信方法的流程示意图;
图5b是本发明实施例提供的另一种通信方法的时序关系示意图;
图6a是本发明实施例提供的又一种通信方法的流程示意图;
图6b是本发明实施例提供的又一种通信方法的时序关系示意图;
图7是本发明实施例提供的另一种网络设备和终端设备的结构示意图。
具体实施方式
下面将结合本发明实施例中的附图,对本发明实施例中的技术方案进行清楚、完整地描述。
应理解,本发明适用于使用非授权频谱通信的无线蜂窝通信网络系统。例如,长期演进(Long Term Evolution,LTE)的授权频谱辅助接入(Licensed assisted access,LAA)系统、增强授权频谱辅助接入(Enhanced Licensed assisted access,eLAA)系统、进一步增强授权频谱辅助接入(Further Enhanced Licensed Assisted Access,FeLAA)系统、5G通信系统中使用非授权频谱的通信系统、独立工作在非授权频谱的MulteFire系统等。本发明的实施例以LTE的eLAA系统为例,并不构成对于本发明实施例提供的技术方案的限定,本领域普通技术人员可知,随着网络架构的演变和新业务场景的出现,本发明实施例提供的技术方案对于类似的技术问题,同样适用。
还应理解,在本发明实施例中,终端设备也可称之为用户设备(User Equipment,UE)、移动台(Mobile Station,MS)、移动终端(Mobile Terminal)等,该终端设备可以经无线接入网(Radio Access Network,RAN)与一个或多个核心网进行通信,例如,终端设备是一种具有无线收发功能的设备,可以部署在陆地上,包括室内或室外、手持或车载;也可以部署在水面上(如轮船等);还可以部署在空中(例如飞机、气球和卫星上等)。所述终端设备可以是手机(mobile phone)、平板电脑(Pad)、带无线收发功能的电脑、虚拟现实(Virtual Reality,VR)终端设备、增强现实(Augmented Reality,AR)终端设备、工业控制(industrial control)中的无线终端、无人驾驶(self driving)中的无线终端、远程医疗(remote medical)中的无线终端、智能电网(smart grid)中的无线终端、运输安全(transportation safety)中的无线终端、智慧城市(smart city)中的无线终端、智慧家庭(smart home)中的无线终端等等。
在本发明实施例中,网络设备(例如网络设备201)是一种部署在无线接入网中用以为终端设备提供无线通信功能的装置。所述网络设备可以包括各种形式的宏基站,微基站(也称为小站),中继站,接入点等。网络设备可以是GSM或CDMA中的基站(Base Transceiver Station,BTS),也可以是WCDMA中的基站(NodeB,NB),也可以是LTE或eLTE中的演进型基站(Evolutional Node B,eNB或e-NodeB),也 可以是下一代移动网络,例如5G(fifth generation)中的基站gNB((next)generation NodeB)。
图1给出了非授权频谱上LAA终端设备和WiFi设备共存的网络系统。为了在非授权频段上让LAA终端设备和WiFi设备公平的享有资源,接入非授权频谱的LAA终端设备需要使用先听后说(Listen Before Talk,LBT)机制监听和检测信道空闲状态。根据非授权频谱法规,比如欧洲电信标准协会(European Telecommunications Standards Institute,ETSI),LBT信道抢占机制包括基于帧结构(Frame Based,FB)的LBT机制和基于负载(Load Based,LB)的LBT机制两类。FB LBT流程中,终端设备/网络设备遵循周期的无线帧结构,只能在无线帧起始时刻开始发送数据。一个FB LBT周期包含信道空闲评估(Clear Channel Assessment,CCA)时间、信道占用时间和空闲时间,LBT的周期是固定的,CCA时间位于每个空闲信道检测周期的最开始,即监听该非授权频段固定时间,如果在监听时间内在监听频段上接收信号能量低于判决门限则认为信道空闲可以占用信道,否则认为信道忙碌不可以占用信道。如果在CCA时间内检测到信道繁忙则不能在随后的信道占用时间内发送数据,必须等到下一个周期的起始子帧进行CCA之后,再次判断信道是否可以占用。LB LBT流程中,终端设备无固定LBT周期,只有在有数据发送的情况下才开始LBT流程。终端设备首先根据法规进行CCA确定信道是否空闲;如果信道被占用,则持续根据法规进行CCA直到信道空闲;如果信道空闲,则生成一个随机时间长度的竞争退避窗(竞争退避窗的最小时间粒度是9us)。在这个竞争退避窗内,设备持续监听非授权频段。当竞争退避窗结束时,如果信道空闲,则设备开始占用信道发送数据;如果在竞争退避过程中监听到信道被占用,则暂停竞争退避过程,根据法规进行CCA直到信道再次空闲时继续进行竞争退避过程。终端设备/网络设备没有无线帧边界的限制,当LB LBT流程结束后,可以立刻开始发送数据。
3Gpp标准中采用了两类LBT机制,一种是基于负载的LBT机制,即非固定长度竞争窗口的随机退避的LBT,标准中叫做种类4(Category4,Cat.4)LBT。Cat.4 LBT可以作为网络设备在下行物理共享信道(Physical Downlink Shared Channel,PDSCH)、物理下行控制信道(Physical Downlink Control Channel,PDCCH)和终端设备在物理上行共享信道(Physical Uplink Shared Channel,PUSCH)发送信息之前抢占非授权频段的LBT机制。一种是基于帧结构的LBT机制,即无随机退避的LBT,3Gpp标准中叫做Type2 LBT,Type2 LBT可以作为网络设备广播发现参考信号(Discovery Reference Signal,DRS)时,接入非授权频段的LBT机制等。LAA系统中非授权频段的无线帧时隙结构与授权频段的时隙结构相同,并且两者的帧边界保持一致。应理解,网络设备或终端设备在成功进行Cat.4 LBT之后,可以在非授权频段上获得最大信道占用时间MCOT。
在网络设备存在大量的下行数据需要通过非授权频段发送,存在下行信道难以抢占的情况或者需要多次抢占信道的情况。例如,覆盖范围内的多个终端设备需要发送上行数据,网络设备需要与多个终端设备竞争抢占非授权频段的使用权,进而网络设备进行LBT流程需要消耗的时间变长,导致网络设备发送下行数据的时延大;由于网络设备抢占到非授权频段后可发送数据的时间长度不能超过法规规定的时间长度上限, 所以当下行数据较大的情况下,网络设备需要多次进行信道抢占流程来完成下行数据发送,导致网络设备下行数据的时延增大;对于多个终端设备独立进行信道抢占的操作,各个终端设备完成抢占的时刻各不相同,为避免频率资源冲突,导致上行资源分配复杂度增大。LAA系统尚未针对这些问题设计解决方案。
为了解决非授权频谱上的无线系统(LAA、MulteFire等)存在的网络设备抢占下行信道困难造成下行数据时延大的问题,本发明实施例提出了一种通信方法,网络设备集中控制终端设备抢占非授权频段,并限制终端设备上行发送的时间长度。由于网络设备在调度终端设备时限制了上行发送的时间长度,网络设备可以准确的获知终端设备的最大信道占用时间(Maximum channel occupancy time,MCOT)的剩余时间,进而可以准确地调度下行数据或调度其他需要发送数据的终端设备使用剩余时间发送数据。对于网络设备使用MCOT的剩余时间的方案,相当于增加了网络设备获得非授权频段占用权的概率,缓解了下行数据发送的压力。进一步地,对于网络设备调度其他需要发送数据的终端设备使用MCOT的剩余时间的方案,可以实现良好的频谱利用效率,同时减少小区中使用Cat.4 LBT流程抢占非授权频段的终端设备数量,降低了网络设备调度的复杂度,增加单个终端设备的抢占成功的概率,降低了Cat.4 LBT带来的接入时延。
LAA、eLAA、FeLAA系统中在非授权频谱上的上下行传输过程可以描述为:网络设备根据网络配置和设备能力在非授权频谱(例如5150-5350MHz)上选择其中一个/多个非授权频点作为副小区(或称为辅小区)的工作频点。应理解,非授权频谱是根据国家或地区法规划分的免费共用频率范围;非授权频谱按照10MHz或者20MHz划分为若干个频段供不同的设备使用;每个频段中心频率被称为工作频点。网络设备以Type2 LBT的形式周期的广播DRS信号,终端设备在非授权频谱内盲检测DRS信号,确定副小区的工作频点、小区ID、以及帧边界定时。终端设备通过主小区上报接入信息,完成初始接入。
图2给出了本发明实施例的一种应用场景中,该场景中包括网络设备201,处在网络设备201覆盖范围内并与网络设备201进行通信的终端设备211-214。应理解,在本发明实施例中,如非特别说明终端设备211-214为已完成初始接入的终端设备。当存在下行信息需要发送时,网络设备201进行Cat.4 LBT流程抢占信道,然后发送下行信息。终端设备211-214已知LAA系统副小区的帧边界,根据LAA下行帧结构进行盲检测,判断当前帧是否存在网络设备201的信号。如果检测到网络设备201的信号,则按照传统LTE的下行数据接收流程进行处理(解调PDCCH,PDSCH等);如果没有检测到网络设备201的信号,则等待下一个无线帧到达再次进行盲检测。当终端设备211-214存在上行数据需要发送时,终端设备通过主小区上报上行数据发送请求(scheduling request,SR)。网络设备201通过主小区或者副小区给上报SR的终端设备配置上行数据信道的参数,包括LBT的类型,时频资源等。终端设备211-214按照配置信息进行LBT流程,LBT成功后开始发送上行数据。使用Cat.4 LBT流程抢占非授权频段的网络设备/终端设备可以在非授权频段上发送信号,发送时间长度(即信道的占用时间)不能超过法规规定的最大信道占用时间(Maximum Channel Occupancy Time,MCOT),网络设备/终端设备的信道占用时间由实际发送数据的时间计算。
应理解,在本发明实施例中网络设备201和终端设备211-214可以在非授权频谱上进行数据通信,该场景可以是LTE中的LAA、eLAA、FeLAA系统、5G通信系统中使用非授权频谱(例如5150-5350MHz)的通信系统、独立工作在非授权频谱的MulteFire系统等。在图2的应用场景的示例中,网络设备201覆盖的范围存在工作在授权频谱上的主小区和工作在非授权频谱上的副小区,主小区和副小区的网络设备201可能对应于同一个或者两个不同的物理站点(例如,宏基站和微基站),不同的站点使用X2协议进行通信。终端设备211-214通过副小区接入非授权频段。终端设备211-214可能是1)有数据需要发送的终端设备;2)需要重传数据的终端设备;3)没有上行数据的空闲终端设备。
图3示出了本发明实施例提供的一种无线装置800和无线装置900的示意性框图。无线装置800和无线装置900可以用于实现本发明各实施例的方法。无线装置800可以是图2中的网络设备201,也可以是网络设备201实现通信功能的部件。无线装置900可以是图2中的终端设备211-214,也可以是终端设备211-214实现通信功能的部件。
无线装置800、900分别包括处理器810、910。所述处理器810用于生成承载了待发送的信息的基带信号,以及用于对接收到的基带信号进行处理。无线装置800、900还可以包括与处理器810、910通过线路连接的收发器820、920,收发器820、920用于将所述处理器810、910生成的基带信号进行处理以转换成射频信号,和对通过天线接收到的射频信号进行处理以转换成所述处理器可处理的基带信号。例如,当所述无线装置800为网络设备201时,可以包括所述处理器810和收发器820。当所述无线装置900为终端设备211-214时,可以包括所述处理器910和收发器920。
下面结合图2示例的应用场景,描述本发明实施例提供的一种通信方法。网络设备201向第一终端设备发送第一信令,第一终端设备可以是图2中的终端设备211-214中的一个,第一信令用于指示第一终端设备在非授权频谱上进行用于占用非授权频段的LBT流程,即Cat.4 LBT流程,并且通过所述非授权频段在第一时间长度内发送上行信息,其中,第一时间长度为第一终端设备在非授权频谱上获得的最大信道占用时间MCOT的一部分,而且第一时间长度小于MCOT。第一终端设备接收第一信令,根据第一信令的指示在非授权频谱上进行用于占用非授权频段的LBT流程,并且通过占用的非授权频段在第一时间长度内发送上行信息。网络设备在非授权频谱上在第一时间长度内从第一终端设备接收上行信息,其中,第一时间长度为第一终端设备在非授权频谱上获得的最大信道占用时间的一部分,且第一时间长度小于最大信道占用时间。
图4a和4b给出了本发明的一个实施例,图4a为本发明的一个实施例提供的一种通信方法300的通信示意图,方法300包括:
S301,网络设备确定第一信令用于指示第一终端设备发送上行数据或指定信息,其中,网络设备可以是图2中的网络设备201,第一终端设备可以是图2中的终端设备211-214中的一个。在一种实现方式中,网络设备201中的处理器810可以用于确定第一信令用于指示第一终端设备发送上行数据或指定信息。
如前文所述,第一终端设备可能是1)有数据需要发送的终端设备;2)需要重传数据的终端设备;3)没有上行数据的空闲终端设备。网络设备可以根据第一终端设备 在主小区或副小区上报的SR或上一次上行数据接收是否完整或者上一次上行数据接收是否正确判断副小区中的第一终端设备当前是否有上行数据需要发送。
当所述第一终端设备有上行数据需要发送时,所述第一信令用于指示所述第一终端设备使用非授权频谱在第一时间长度内发送上行数据;
当所述第一终端设备没有上行数据需要发送时,所述第一信令用于指示所述第一终端设备使用非授权频谱在第一时间长度内发送指定信息。其中,指定信息的类型可能为信道状态信息,测量报告,缓存状态报告,上行参考信号或填充比特。
可选地,第一信令包括至少一个比特用于指示以下信息的至少一个:上行先听后发LBT流程的发起时刻K1、LBT流程优先级,用于发送所述上行信息的子载波集合、所述第一时间长度和所述指定信息的类型。可选地,以上信息中的一个或多个可以是协议中预先设置的值,而不必在第一信令中单独指示,例如,为获得较长的MCOT时间,通信系统可以预定义被调度进行MCOT共享的第一终端设备的LBT流程的优先级为较低的值,比如为3或者4;
第一时间长度为第一终端设备在占用的非授权频段上发送上行信息的持续时间。可选地,第一时间长度为预先设置的值。
或者可选的,第一时间长度为通过高层信令半静态配置的值;
或者可选的,第一时间长度是通过物理层信令通知的,在该种可能的情况下,第一信令还用于指示第一时间长度,网络设备可以根据第一终端设备的数据量动态的指示第一时间长度。
在以上任意一种第一时间长度的配置方式下,一个具体实现方式是,针对不同状态的终端设备都预先设置或通知一个固定的第一时间长度,例如一个子帧;另一个可能的具体实现方式是,针对不同情况预先设置或者通知两个不同的第一时间长度,例如1或3个子帧,网络设备分别针对空闲状态的第一终端设备和有上行数据需要发送的第一终端设备进行配置,对于空闲状态的第一终端设备,第一时间长度为一个子帧,仅用于发送指定信息,例如信道状态信息的非周期上报,对于有上行数据需要发送的第一终端设备,第一时间长度为3个子帧。
S302,网络设备向第一终端设备发送第一信令;第一信令用于指示第一终端设备在非授权频谱上进行用于占用非授权频段的LBT流程,即Cat.4 LBT流程,并且通过所述非授权频段在第一时间长度内发送上行信息,其中,第一时间长度为第一终端设备在非授权频谱上获得的最大信道占用时间MCOT的一部分,而且第一时间长度小于MCOT;第一信令可以是物理层信令,可以通过授权频段或通过非授权频段发送。由于授权频段一般都有可用的下行传输资源,因此使用授权频段发送所述第一信令可以更及时的发送。而使用非授权频段发送所述第一信令可以避免对现有授权频段上的信令做增加和改动,以减轻终端设备在授权频段上进行盲检测的次数或复杂度。
在一种实现方式中,所述网络设备201中的处理器810可以通过收发器820,向第一终端设备发送第一信令。
S303,第一终端设备接收第一信令,根据第一信令的指示在非授权频谱上进行用于占用非授权频段的LBT流程,并且通过占用的非授权频段在第一时间长度内发送上行信息。在一种实现方式中,处理器910可以通过收发器920接收第一信令,根据第 一信令的指示在非授权频谱上进行用于占用非授权频段的LBT流程,并且通过占用的非授权频段在第一时间长度内发送上行信息。
在一种可能的情况下,第一信令指示第一终端设备发送上行数据。此时第一终端设备在K1时刻发起Cat.4 LBT流程,LBT流程成功后,通过占用的非授权频段在第一时间长度内发送上行数据;
在另一种可能的情况下,第一信令指示第一终端设备发送指定信息。此时第一终端设备在K1时刻发起Cat.4 LBT流程,如果第一终端设备在Cat.4 LBT之前或过程中产生了待发送的上行数据,则通过占用的非授权频段在第一时间长度内发送指定信息和上行数据;如果第一终端设备在Cat.4 LBT流程结束后没有需要发送的上行数据,则通过占用的非授权频段在第一时间长度内发送指定信息;其中,
指定信息的类型为信道状态信息,测量报告,缓存状态报告,上行参考信号或填充比特。
S304,在第一时间长度之后,网络设备使用第一终端设备抢占的非授权频段在第二时间长度内发送第一下行控制信息和下行数据,第一终端设备抢占的非授权频段为接收第一终端设备发送上行信息的非授权频段;其中,
第一下行控制信息用于调度第一终端设备或第二终端设备使用第一终端设备抢占的非授权频段在第二时间长度内接收下行数据。第二时间长度位于第一时间长度之后,且第二时间长度与第一时间长度之和小于或等于第一终端设备在非授权频段获得的最大信道占用时间。
在一种实现方式中,处理器810可以通过收发器820使用第一终端设备抢占的非授权频段在第二时间长度内发送第一下行控制信息和下行数据。
可选地,在第一时间长度之后,网络设备先进行短时LBT,即Type2 LBT流程,短暂地监听该频段,如果Type2 LBT监听信道为空闲,则网络设备开始发送下行数据;
可选地,第一终端按照第一下行控制信息的配置在非授权频段上完成LBT流程抢占到信道后,在第一时间长度内发送上行数据或指定信息,并且通过上行控制信道或数据信道反馈一个状态信息。该状态信息表示第一终端是否接受网络设备的上行发送时间共享的调度配置。如果第一终端设备反馈接受调度,则可以进行后续的上行发送共享的流程,否则上行发送共享流程终止。
图4b为本发明的一个实施例提供的一种通信方法300的时序示意图。第一终端设备在时刻K1发起用于抢占非授权频段的Cat.4 LBT流程,LBT流程成功后在占用的非授权频段上发送上行信息,第一终端设备发送上行信息的持续时间为第一时间长度;第一时间长度结束之后,网络设备利用第一终端设备获得的MCOT的剩余时间,即使用第一终端设备抢占的非授权频段在第一时间长度之后的第二时间长度内发送第一下行控制信息和下行数据,且第二时间长度与第一时间长度之和小于或等于第一终端设备获得的MCOT。第一时间长度结束时刻为K2,第二时间长度的起始时刻为K3,由于考虑到网络设备上下行切换造成的物理时延、或网络设备在间隔时间内进行Type2LBT流程所需要的时间、或上行定时提前量、或其他原因,时刻K2与时刻K3间隔M1个OFDM符号长度,M1为大于0的整数;
可选地,网络设备在间隔时间内进行Type2 LBT流程,短暂地监听该频段。如果 Type2 LBT监听信道为空闲,则网络设备开始发送下行数据。
网络设备和第一终端设备通过执行方法300,网络设备可以调度第一终端设备抢占非授权频段并指示第一终端设备发送上行信息的第一时间长度,网络设备利用第一终端设备的MCOT的剩余时间在第一终端设备抢占的非授权频段上发送下行数据,相当于调度第一终端设备代替网络设备抢占非授权频谱。在网络设备存在大量的下行数据需要发送,而第一终端设备的上行数据是非紧急数据并且数据量少、零散的情况下,网络设备调度第一终端抢占非授权频段,并共享第一终端获取的MCOT的剩余时间,从而,相当于增加了网络设备获得非授权频段占用权的概率,缓解了下行数据发送的压力。此外,网络设备限定第一终端发送上行信息的第一时间长度,可以保证网络设备获得固定时间长度的下行发送时间,实现上下行发送的灵活配比,进而提高了网络的通信效率。
图5a和5b给出了本发明的另一个实施例,图5a为本发明的另一个实施例提供的一种通信方法400的通信示意图,方法400包括:
S401与方法300的步骤S301相同,S402与方法300的步骤S302相同,S403与方法300的步骤S303相同,此处不予赘述;
S404,在第一时间长度之后,网络设备使用第一终端设备抢占的非授权频段在第二时间长度内发送第一下行控制信息和下行数据,第一下行控制信息用于调度第一终端设备或第二终端设备使用第一终端设备抢占的非授权频段在第二时间长度内接收下行数据。第二时间长度为第一终端设备获取的MCOT的剩余时间的一部分。
在一种实现方式中,处理器810可以通过收发器820使用第一终端设备抢占的非授权频段在第二时间长度内发送第一下行控制信息和下行数据。
可选地,在第一时间长度之后,网络设备先进行Type2 LBT流程,短暂地监听该频段。如果Type2 LBT监听信道为空闲,则网络设备开始发送下行数据;
S405,网络设备调度第三终端设备使用第一终端设备抢占的非授权频段在第三时间长度内进行上行数据传输,第三终端设备和第二终端设备可以是相同的终端设备也可以是不同的终端设备;其中,第三时间长度位于第二时间长度之后,且第三时间长度、第二时间长度与第一时间长度之和小于或等于第一终端设备获取的最大信道占用时间。
在一种实现方式中,处理器810可以通过收发器820调度第三终端设备使用第一终端设备抢占的非授权频段在第三时间长度内进行上行数据传输。
在一个示例中,网络设备使用第一终端设备抢占的非授权频段在第二时间长度内发送第二下行控制信息给第三终端设备;第二下行控制信息包括至少一个比特用于指示以下信息的至少一个:用于进行上行数据传输的子载波集合、第三时间长度和第三时间长度的起始时刻K4;
在另一个示例中,网络设备在发送第二控制信息之前,先发送第三控制信息。此时第三控制信息包括至少一个比特用于指示用于进行上行数据传输的子载波集合和/或所述第三时间长度,第二控制信息包括至少一个比特用于指示所述第三时间长度的起始时刻K4。
在一种可选的实现方式中,网络设备使用授权频谱发送第三下行控制信息给第三 终端设备,并且网络设备使用第一终端设备抢占的非授权频段在第二时间长度内发送第二下行控制信息给第三终端设备。使用非授权频段发送第二下行控制信息可以避免对现有授权频段上的信令做增加和改动,以减轻终端设备在授权频段上进行盲检测的次数或复杂度。
在另一种可选的实现方式中,网络设备使用第一终端设备抢占的非授权频段在第二时间长度内发送第三下行控制信息和第二下行控制信息。由于授权频段一般都有可用的下行传输资源,因此使用授权频段发送第三下行控制信息和第二下行控制信息可以更及时的发送,并且发送时间更灵活,例如,网络设备可以使用授权频段在第二时间长度之前发送第二下行控制信息,使得第三终端设备可以提前准备上行发送数据,能够缩短网络设备发送下行信息和第三终端设备发送上行数据之间的间隔时间。
S406,第三终端设备使用第一终端设备抢占的非授权频段在第三时间长度内进行上行数据传输。
在一种实现方式中,处理器910可以通过收发器920使用第一终端设备抢占的非授权频段在第三时间长度内进行上行数据传输。
可选地,在第二时间长度之后,第三终端设备先进行短时LBT,即Type2 LBT流程,短暂地监听该频段,如果Type2 LBT监听信道为空闲,则第三终端设备开始发送上行数据,第三时间长度为第三终端设备发送上行数据的持续时间长度;
图5b为本发明的一个实施例提供的另一种通信方法400的时序示意图。第一终端设备在时刻K1发起用于抢占非授权频段的Cat.4 LBT流程,LBT流程成功后在占用的非授权频段上发送上行信息给网络设备,第一终端设备发送上行信息的持续时间为第一时间长度;第一时间长度结束之后,网络设备利用第一终端设备获得的MCOT的剩余时间的一部分,即使用第一终端设备抢占的非授权频段在第一时间长度之后的第二时间长度内发送第一下行控制信息和下行数据给第二终端设备;可选地,在第一时间长度之后,网络设备先进行Type2 LBT流程,短暂地监听该频段,如果Type2 LBT监听信道为空闲,则网络设备开始发送下行数据;网络设备调度第三终端设备在第二时间长度之后的第三时间长度内,使用第一终端设备抢占的非授权频段发送上行数据给网络设备,且第三时间长度、第二时间长度与第一时间长度之和小于或等于第一终端设备获取的MCOT。第一时间长度结束时刻为K2,第二时间长度的起始时刻为K3,时刻K2与时刻K3间隔M1个OFDM符号长度,M1为大于0的整数;第二时间长度结束时刻为K5,第三时间长度的起始时刻为K4,时刻K4与时刻K5间隔M2个OFDM符号长度,M2为大于0的整数;
可选地,在第二时间长度之后,第三终端设备在间隔时间内进行短时LBT,即Type2 LBT流程,短暂地监听该频段,如果Type2 LBT监听信道为空闲,则第三终端设备开始发送上行数据;
网络设备和第一终端设备、第二终端设备以及第三终端设备通过执行该方法400,调度第一终端设备抢占非授权频段并指示第一终端设备发送上行信息的第一时间长度,网络设备利用第一终端设备的MCOT的剩余时间的一部分在第一终端设备抢占的非授权频段上发送下行数据,增加了网络设备获得非授权频段占用权的概率,缓解了下行数据发送的压力。此外,网络设备限定第一终端发送上行信息的第一时间长度,可以 保证网络设备获得固定时间长度来发送下行信息实现上下行发送的灵活配比,进而提高了网络的通信效率。同时调度第三终端设备利用第一终端设备获取的MCOT的剩余时间发送上行数据,在系统中网络设备存在下行数据需要发送,而终端设备需要频繁发送上行数据并且每次数据量较少的情况下,可以实现良好的频谱利用效率,同时减少小区中使用Cat.4 LBT流程抢占非授权频段的终端设备的数量,降低了网络设备调度的复杂度,降低了第三终端设备进行Cat.4 LBT带来的接入时延。
图6a和6b给出了本发明的又一个实施例,图6a为本发明的又一个实施例提供的一种通信方法500的通信示意图,方法500包括:
S501与方法300的步骤S301相同,S502与方法300的步骤S302相同,S503与方法300的步骤S303相同,此处不予赘述;
S504,在第一时间长度结束时刻之前,网络设备调度第三终端设备使用第一终端设备抢占的非授权频段在第三时间长度内进行上行数据传输;其中,第三时间长度位于第一时间长度之后,且第三时间长度与第一时间长度之和小于或等于第一终端设备获取的最大信道占用时间。
在一种实现方式中,处理器810可以通过收发器820在第一时间长度结束时刻之前,调度第三终端设备使用第一终端设备抢占的非授权频段在第三时间长度内进行上行数据传输。
在一个示例中,第二下行控制信息包括至少一个比特用于指示以下信息的至少一个:用于进行上行数据传输的子载波集合、第三时间长度和第三时间长度的起始时刻K4;网络设备使用授权频谱在第一时间长度结束时刻之前发送第二下行控制信息给第三终端设备,指示第三终端设备使用第一终端设备抢占的非授权频段在第三时间长度内进行上行数据传输。相比于使用非授权频段发送第二控制信息,网络设备使用授权频谱发送第二下行控制信息不需要占用第一终端设备在非授权频谱上抢占的MCOT,网络设备可以尽量多的将MCOT的剩余时间分配给第三终端设备。
在另一个示例中,第二下行控制信息包括至少一个比特用于指示所述第三时间长度的起始时刻K4;此时,网络设备使用授权频谱在发送第二下行控制信息之前先发送第三下行控制信息给第三终端设备,第三下行控制信息包括至少一个比特用于指示用于进行上行数据传输的子载波集合和/或所述第三时间长度。第三终端设备接收到第三控制信息之后根据第三时间长度信息开始组包,等待第二下行控制信息指示第三时间长度的起始时刻K4;网络设备在第一时间长度结束时刻K2之前发送第二下行控制信息给第三终端设备,时刻K2和时刻K4之间间隔大于0的整数个OFDM符号长度;
S505,第三终端设备使用第一终端设备抢占的非授权频段在第三时间长度内进行上行数据传输。
在一种实现方式中,处理器910可以通过收发器920使用第一终端设备抢占的非授权频段在第三时间长度内进行上行数据传输。
可选地,在第一时间长度之后,第三终端设备在间隔时间进行短时LBT,即Type2LBT流程,短暂地监听该频段,如果Type2 LBT监听信道为空闲,则第三终端设备开始发送上行数据,第三时间长度为第三终端设备发送上行数据的持续时间长度。
图6b为本发明的一个实施例提供的又一种通信方法500的时序示意图。第一终端 设备在时刻K1发起用于抢占非授权频段的Cat.4 LBT流程,LBT流程成功后在占用的非授权频段上发送上行信息给网络设备,第一终端设备发送上行信息的持续时间为第一时间长度;网络设备调度第三终端设备在第一时间长度之后的第三时间长度内,使用第一终端设备抢占的非授权频段发送上行数据给网络设备,且第三时间长度与第一时间长度之和小于或等于第一终端设备获取的MCOT。第一时间长度结束时刻为K2,第三时间长度的起始时刻为K4,时刻K4与时刻K2间隔M3个OFDM符号长度,M3为大于0的整数;
可选地,在第一时间长度之后,第三终端设备在间隔时间内进行短时LBT,即Type2 LBT流程,短暂地监听该频段,如果Type2 LBT监听信道为空闲,则第三终端设备开始发送上行数据。
网络设备和第一终端设备以及第三终端设备通过执行该方法500,网络设备调度第一终端设备抢占非授权频段并指示第一终端设备发送上行信息的第一时间长度,网络设备限定第一终端发送上行信息的第一时间长度,可以保证第三终端设备获得固定时间长度的上行发送时间,实现第一终端设备和第三终端设备的发送时间的灵活配比,进而提高了网络的通信效率。同时,网络设备调度第三终端设备利用第一终端设备获取的MCOT的剩余时间发送上行数据,在系统中终端设备需要频繁发送上行数据并且每次数据量较少的情况下,可以实现良好的频谱利用效率,同时减少小区中使用Cat.4LBT流程抢占非授权频段的终端设备的数量,降低了Cat.4 LBT带来的接入时延,降低了网络设备调度的复杂度,增加了单个终端设备抢占非授权频段成功的概率。
图7示出了实现本发明实施例的另一种无线装置600和无线装置700的示意性框图。
无线装置600可以为本发明前述实施例中的网络设备,或该网络设备中的部件。无线装置600包括:处理器610,收发器630以及存储器620,存储器620用于存储计算机可执行的程序代码或指令。所述收发器630用于发送和接收信号,该信号可以是模拟射频信号,或数字射频信号,或无线电信号。所述处理器610读取并执行存储器620中的程序代码或指令。当存储器620中的程序代码或指令被所述处理器610执行时,控制无线装置600实现上述方法中网络设备的功能。
无线装置700可以为本发明前述实施例中的终端设备,或该终端设备中的部件。无线装置700包括:处理器710,收发器730以及存储器720,存储器720用于存储计算机可执行的程序代码或指令。所述收发器730用于发送和接收信号,该信号可以是模拟射频信号,或数字射频信号,或无线电信号。所述处理器710读取并执行存储器720中的程序代码或指令。当存储器720中的程序代码或指令被所述处理器610执行时,控制无线装置700实现上述方法中终端设备的功能。
可以理解的是,图7仅仅示出了无线装置600和700的简化设计。在实际应用中,无线装置600和700可以包含任意数量的收发器,处理器,存储器等,而所有可以实现本发明的结构都在本发明的保护范围之内。
本发明实施例还提供一种通信装置,该通信装置的结构中包括处理器和与所述处理器通过线路连接的存储器,所述存储器可以内置于所述处理器内部,或者外置于所述处理器外部。所述处理器包括输入输出接口,输入输出接口用于发送信号和接收信 号,所述发送的信号可以承载该装置向其他通信设备发送的信息,所述接收的信号可以承载从其他通信设备接收到的信息。该输入输出接口输出的信号例如可以是未经调制的基带信号,或经过数字调制的基带信号,或经过模拟调制的基带信号,也可以是经过调制的中/射频信号。所述存储器用于存储指令。处理器用于读取并执行存储器中的指令以控制该通信装置执行前述实施例中的方法。
用于执行本发明上述网络设备和终端设备装置功能的处理器可以是中央处理器(CPU),通用处理器、数字信号处理器(DSP)、专用集成电路(ASIC),现场可编程门阵列(FPGA)或者其他可编程逻辑器件、晶体管逻辑器件,硬件部件或者其任意组合。其可以实现或执行结合本发明公开内容所描述的各种示例性的逻辑方框,模块和电路。所述处理器也可以是实现计算功能的组合,例如包含一个或多个微处理器组合,DSP和微处理器的组合等等。
结合本发明公开内容所描述的方法或者算法的步骤可以硬件的方式来实现,也可以是由处理器执行软件指令的方式来实现。软件指令可以由相应的软件模块组成,软件模块可以被存放于RAM存储器、闪存、ROM存储器、EPROM存储器、EEPROM存储器、寄存器、硬盘、移动硬盘、CD-ROM或者本领域熟知的任何其它形式的存储器中。一种示例性的存储介质耦合至处理器,从而使处理器能够从该存储介质读取信息,且可向该存储介质写入信息。
本领域技术人员应该可以意识到,在上述一个或多个示例中,本发明所描述的功能可以用硬件、软件、固件或它们的任意组合来实现。当使用软件实现时,可以将这些功能存储在计算机可读介质中或者作为计算机可读介质上的一个或多个指令或代码进行传输。计算机可读介质包括计算机存储介质和通信介质,其中通信介质包括便于从一个地方向另一个地方传送计算机程序的任何介质。存储介质可以是通用或专用计算机能够存取的任何可用介质。
以上所述的具体实施方式,对本发明的目的、技术方案和有益效果进行了进一步详细说明,所应理解的是,以上所述仅为本发明的具体实施方式而已,并不用于限定本发明的保护范围,凡在本发明的技术方案的基础之上,所做的任何修改、等同替换、改进等,均应包括在本发明的保护范围之内。
本发明示例还提供一种装置(例如,集成电路、无线设备、电路模块等)用于实现上述方法。实现本文描述的装置可以是自立设备或者可以是较大设备的一部分。设备可以是(i)自立的IC;(ii)具有一个或多个1C的集合,其可包括用于存储数据和/或指令的存储器IC;(iii)RFIC,诸如RF接收机或RF发射机/接收机;(iv)ASIC,诸如移动站调制解调器;(v)可嵌入在其他设备内的模块;(vi)接收机、蜂窝电话、无线设备、手持机、或者移动单元;(vii)其他等等。
本发明实施例提供的方法和装置,可以应用于终端设备或网络设备(可以统称为无线设备)。该终端设备或网络设备或无线设备可以包括硬件层、运行在硬件层之上的操作系统层,以及运行在操作系统层上的应用层。该硬件层包括中央处理器(central processing unit,CPU)、内存管理单元(memory management unit,MMU)和内存(也称为主存)等硬件。该操作系统可以是任意一种或多种通过进程(process)实现业务处理的计算机操作系统,例如,Linux操作系统、Unix操作系统、Android操作系统、 iOS操作系统或windows操作系统等。该应用层包含浏览器、通讯录、文字处理软件、以及即时通信软件等应用。并且,在本发明实施例中,本发明实施例并不限定方法的执行主体的具体结构,只要能够通过运行记录有本发明实施例的方法的代码的程序,以根据本发明实施例的传输信号的方法进行通信即可,例如,本发明实施例的无线通信的方法的执行主体可以是终端设备或网络设备,或者,是终端设备或网络设备中能够调用程序并执行程序的功能模块。
本领域普通技术人员可以意识到,结合本文中所公开的实施例描述的各示例的单元及算法步骤,能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行,取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能,但是这种实现不应认为超出本发明实施例的范围。
此外,本发明实施例的各个方面或特征可以实现成方法、装置或使用标准编程和/或工程技术的制品。本申请中使用的术语“制品”涵盖可从任何计算机可读器件、载体或介质访问的计算机程序。例如,计算机可读介质可以包括,但不限于:磁存储器件(例如,硬盘、软盘或磁带等),光盘(例如,压缩盘(compact disc,CD)、数字通用盘(digital versatile disc,DVD)等),智能卡和闪存器件(例如,可擦写可编程只读存储器(erasable programmable read-only memory,EPROM)、卡、棒或钥匙驱动器等)。另外,本文描述的各种存储介质可代表用于存储信息的一个或多个设备和/或其它机器可读介质。术语“机器可读介质”可包括但不限于,无线信道和能够存储、包含和/或承载指令和/或数据的各种其它介质。
在上述实施例中,可以全部或部分地通过软件、硬件、固件或者其任意组合来实现。当使用软件实现时,可以全部或部分地以计算机程序产品的形式实现。所述计算机程序产品包括一个或多个计算机指令。在计算机上加载和执行所述计算机程序指令时,全部或部分地产生按照本发明实施例所述的流程或功能。所述计算机可以是通用计算机、专用计算机、计算机网络、或者其他可编程装置。所述计算机指令可以存储在计算机可读存储介质中,或者从一个计算机可读存储介质向另一个计算机可读存储介质传输,例如,所述计算机指令可以从一个网站站点、计算机、服务器或数据中心通过有线(例如同轴电缆、光纤、数字用户线(DSL))或无线(例如红外、无线、微波等)方式向另一个网站站点、计算机、服务器或数据中心进行传输。所述计算机可读存储介质可以是计算机能够存取的任何可用介质或者是包含一个或多个可用介质集成的服务器、数据中心等数据存储设备。所述可用介质可以是磁性介质,(例如,软盘、硬盘、磁带)、光介质(例如,DVD)、或者半导体介质(例如固态硬盘Solid State Disk(SSD))等。
应理解,在本发明实施例的各种实施例中,上述各过程的序号的大小并不意味着执行顺序的先后,各过程的执行顺序应以其功能和内在逻辑确定,而不应对本发明实施例的实施过程构成任何限定。
所属领域的技术人员可以清楚地了解到,为描述的方便和简洁,上述描述的系统、装置和单元的具体工作过程,可以参考前述方法实施例中的对应过程,在此不再赘述。
在本申请所提供的几个实施例中,应该理解到,所揭露的系统、装置和方法,可 以通过其它的方式实现。例如,以上所描述的装置实施例仅仅是示意性的,例如,所述单元的划分,仅仅为一种逻辑功能划分,实际实现时可以有另外的划分方式,例如多个单元或组件可以结合或者可以集成到另一个系统,或一些特征可以忽略,或不执行。另一点,所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口,装置或单元的间接耦合或通信连接,可以是电性,机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的,作为单元显示的部件可以是或者也可以不是物理单元,即可以位于一个地方,或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
所述功能如果以软件功能单元的形式实现并作为独立的产品销售或使用时,可以存储在一个计算机可读取存储介质中。基于这样的理解,本发明实施例的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的部分可以以软件产品的形式体现出来,该计算机软件产品存储在一个存储介质中,包括若干指令用以使得一台计算机设备(可以是个人计算机,服务器,或者网络设备等)执行本发明实施例各个实施例所述方法的全部或部分步骤。而前述的存储介质包括:U盘、移动硬盘、只读存储器(ROM,Read-Only Memory)、随机存取存储器(RAM,Random Access Memory)、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述,仅为本发明实施例的具体实施方式,但本发明实施例的保护范围并不局限于此,任何熟悉本技术领域的技术人员在本发明实施例揭露的技术范围内,可轻易想到变化或替换,都应涵盖在本发明实施例的保护范围之内。

Claims (44)

  1. 一种通信方法,其特征在于,包括:
    所述网络设备向第一终端设备发送第一信令,所述第一信令用于指示所述第一终端设备在非授权频谱上进行用于占用非授权频段的先听后发LBT流程,并且在所述非授权频段上第一时间长度内发送上行信息;
    所述网络设备在所述非授权频谱上在第一时间长度内从所述第一终端设备接收所述上行信息;
    其中,所述第一时间长度为所述第一终端设备在所述非授权频谱上获得的最大信道占用时间的一部分,且所述第一时间长度小于所述最大信道占用时间。
  2. 根据权利要求1所述的方法,其特征在于,其中,所述上行信息包括上行数据或指定信息;且
    所述第一时间长度为预先设置的值,或者
    所述第一时间长度为通过高层信令半静态配置的值;或者
    所述第一时间长度是通过物理层信令通知的。
  3. 根据权利要求2所述的方法,其特征在于,在所述网络设备向第一终端设备发送第一信令之前,所述方法还包括:
    所述网络设备确定第一信令用于指示所述第一终端设备发送上行数据或指定信息;其中,
    当所述第一终端设备有上行数据需要发送时,所述第一信令用于指示所述第一终端设备使用非授权频谱在第一时间长度内发送上行数据;
    当所述第一终端设备没有上行数据需要发送时,所述第一信令用于指示所述第一终端设备使用非授权频谱在第一时间长度内发送指定信息。
  4. 根据权利要求2或3所述的方法,其特征在于,所述指定信息的类型为信道状态信息,测量报告,缓存状态报告,上行参考信号或填充比特。
  5. 根据权利要求1至4中任一项所述的方法,其特征在于,
    所述第一信令包括至少一个比特用于指示以下信息的至少一个:上行先听后发LBT流程的发起时刻K1、LBT流程优先级,用于发送所述上行信息的子载波集合、所述第一时间长度和所述指定信息的类型所。
  6. 根据权利要求1至5中任一项所述的方法,其特征在于,包括:
    当在所述第一时间长度之后,所述网络设备使用所述第一终端设备抢占的非授权频段在第二时间长度内发送第一下行控制信息,所述第一终端设备抢占的非授权频段为接收所述第一终端设备发送上行信息的非授权频段;其中,
    所述第一下行控制信息用于调度所述第一终端设备或第二终端设备使用所述第一终端设备抢占的非授权频段在第二时间长度接收下行数据。
  7. 根据权利要求6所述的方法,其特征在于,所述第一时间长度结束时刻为K2,所述第二时间长度的起始时刻为K3,所述时刻K2与时刻K3间隔M1个OFDM符号长度,M1为大于0的整数。
  8. 根据权利要求6至7中任一项所述的方法,其特征在于,所述第二时间长度位于所述第一时间长度之后,且所述第二时间长度与所述第一时间长度之和小于或等于所述最大信道占用时间。
  9. 根据权利要求1至7中任一项所述的方法,其特征在于,
    所述网络设备使用所述第一终端设备抢占的非授权频段在所述第二时间长度内发送第二下行控制信息;或者
    所述网络设备使用授权频段发送第二下行控制信息;
    其中,所述第二下行控制信息用于调度所述第一终端设备或所述第二终端设备或第三终端设备使用所述第一终端设备抢占的非授权频段在第三时间长度内进行上行数据传输。
  10. 根据权利要求9所述的方法,其特征在于,所述网络设备使用授权频段发送第二下行控制信息包括:
    所述网络设备使用授权频段在所述第一时间长度结束时刻之前发送第二下行控制信息;或者
    所述网络设备使用授权频段在所述第二时间长度结束时刻之前发送第二下行控制信息。
  11. 根据权利要求9或10所述的方法,其特征在于,
    所述第二下行控制信息包括至少一个比特用于指示以下信息的至少一个:用于进行上行数据传输的子载波集合、所述第三时间长度和所述第三时间长度的起始时刻K4;
    或者,
    所述第二下行控制信息包括至少一个比特用于指示所述第三时间长度的起始时刻K4,且所述方法还包括:
    在发送第二下行控制信息之前,所述网络设备发送第三下行控制信息,所述第三下行控制信息包括至少一个比特用于指示用于进行上行数据传输的子载波集合和/或所述第三时间长度。
  12. 根据权利要求9至11中任一项所述的方法,其特征在于,
    所述第二时间长度结束时刻为K5,所述第三时间长度的起始时刻K4,所述时刻K4与时刻K5间隔M2个OFDM符号长度,M2为大于0的整数;
    或者
    所述第一时间长度结束时刻为K2,所述第三时间长度的起始时刻K4,所述时刻K4与时刻K2间隔M3个OFDM符号长度,M3为大于0的整数。
  13. 根据权利要求9至12中任一项所述的方法,其特征在于,
    所述第三时间长度位于所述第一时间长度之后,且所述第三时间长度与所述第一时间长度之和小于或等于所述最大信道占用时间;或
    所述第二时间长度位于所述第一时间长度之后,所述第三之间长度位于所述第二时间长度之后,且所述第三时间长度、所述第二时间长度与所述第一时间长度之和小于或等于所述最大信道占用时间。
  14. 根据权利要求6至13任一所述的方法,其特征在于,在所述第一时间长度之后,且在所述网络设备使用所述第一终端设备抢占的非授权频段发送第一下行控制信息之前,所述方法还还包括:
    所述网络设备进行下行短时LBT流程。
  15. 一种无线装置,其特征在于,包括:
    处理器和与所述处理器连接的收发器,
    所述收发器,用于发送或接收信号;
    所述处理器,用于通过所述收发器向第一终端设备发送第一信令,所述第一信令用于指示所述第一终端设备在非授权频谱上进行用于占用非授权频段的先听后发LBT流程,并且在所述非授权频段上第一时间长度内发送上行信息;
    所述收发器,还用于通过所述收发器在所述非授权频段上在第一时间长度内从所述第一终端设备接收所述上行信息;
    其中,所述第一时间长度为所述第一终端设备在所述非授权频段上获得的最大信 道占用时间的一部分,且所述第一时间长度小于所述最大信道占用时间。
  16. 根据权利要求15所述的无线装置,其特征在于,其中,所述上行信息包括上行数据或指定信息;且
    所述第一时间长度为预先设置的值,或者
    所述第一时间长度为通过高层信令半静态配置的值;或者
    所述第一时间长度是通过物理层信令通知的。
  17. 根据权利要求16所述的无线装置,其特征在于,所述处理器还用于:
    在向第一终端设备发送第一信令之前,确定第一信令用于指示所述第一终端设备发送上行数据或指定信息;其中,
    当所述第一终端设备有上行数据需要发送时,所述第一信令用于指示所述第一终端设备使用非授权频谱在第一时间长度内发送上行数据;
    当所述第一终端设备没有上行数据需要发送时,所述第一信令用于指示所述第一终端设备使用非授权频谱在第一时间长度内发送指定信息。
  18. 根据权利要求16或17所述的无线装置,其特征在于,所述指定信息的类型为信道状态信息,测量报告,缓存状态报告,上行参考信号或填充比特。
  19. 根据权利要求15至18中任一项所述的无线装置,其特征在于,
    所述第一信令包括至少一个比特用于指示以下信息的至少一个:上行先听后发LBT流程的发起时刻K1、LBT流程优先级,用于发送所述上行信息的子载波集合、所述第一时间长度和所述指定信息的类型。
  20. 根据权利要求15至19中任一项所述的无线装置,其特征在于,
    所述处理器,用于在所述第一时间长度之后,通过所述收发器使用所述第一终端设备抢占的非授权频段在第二时间长度内发送第一下行控制信息和下行数据,所述第一终端设备抢占的非授权频段为接收所述第一终端设备发送上行信息的非授权频段;其中,
    所述第一下行控制信息用于调度所述第一终端设备或第二终端设备使用所述第一终端设备抢占的非授权频段在第二时间长度内接收下行数据。
  21. 根据权利要求20所述的无线装置,其特征在于,所述第一时间长度结束时刻为K2,所述第二时间长度的起始时刻为K3,所述时刻K2与时刻K3间隔M1个OFDM符号长度,M1为大于0的整数。
  22. 根据权利要求20或21所述的无线装置,其特征在于,所述第二时间长度位于所述第一时间长度之后,且所述第二时间长度与所述第一时间长度之和小于或等于所述最大信道占用时间。
  23. 根据权利要求15至21中任一项所述的无线装置,其特征在于,
    所述处理器,用于通过所述收发器使用所述第一终端设备抢占的非授权频段在所述第二时间长度内发送第二下行控制信息;或者
    所述处理器,用于通过所述收发器使用授权频段发送第二下行控制信息;
    其中,所述第二下行控制信息用于调度所述第一终端设备或所述第二终端设备或第三终端设备使用所述第一终端设备抢占的非授权频段在第三时间长度内进行上行数据传输。
  24. 根据权利要求23所述的无线装置,其特征在于,所述通过所述收发器使用授权频段发送第二下行控制信息包括:
    通过所述收发器使用授权频段在所述第一时间长度结束时刻之前发送第二下行控制信息;或者
    通过所述收发器使用授权频段在所述第二时间长度结束时刻之前发送第二下行控 制信息。
  25. 根据权利要求23或24所述的无线装置,其特征在于,
    所述第二下行控制信息包括至少一个比特用于指示以下信息的至少一个:用于进行上行数据传输的子载波集合、所述第三时间长度和所述第三时间长度的起始时刻K4;
    或者,
    所述第二下行控制信息包括至少一个比特用于指示所述第三时间长度的起始时刻K4,且所述处理器还用于:
    在发送第二下行控制信息之前,通过所述收发器发送第三下行控制信息,所述第三下行控制信息包括至少一个比特用于指示用于进行上行数据传输的子载波集合和/或所述第三时间长度。
  26. 根据权利要求23至25中任一项所述的无线装置,其特征在于,
    所述第二时间长度结束时刻为K5,所述第三时间长度的起始时刻K4,所述时刻K4与时刻K5间隔M2个OFDM符号长度,M2为大于0的整数;
    或者
    所述第一时间长度结束时刻为K2,所述第三时间长度的起始时刻K4,所述时刻K4与时刻K2间隔M3个OFDM符号长度,M3为大于0的整数。
  27. 根据权利要求23至26中任一项所述的无线装置,其特征在于,
    所述第三时间长度位于所述第一时间长度之后,且所述第三时间长度与所述第一时间长度之和小于或等于所述最大信道占用时间;或
    所述第二时间长度位于所述第一时间长度之后,所述第三之间长度位于所述第二时间长度之后,且所述第三时间长度、所述第二时间长度与所述第一时间长度之和小于或等于所述最大信道占用时间。
  28. 根据权利要求20至27任一所述的无线装置,其特征在于,在所述第一时间长度之后,且在所述收发器使用所述第一终端设备抢占的非授权频段发送第一下行控制信息之前,所述处理器还用于:
    通过所述收发器进行下行短时LBT流程。
  29. 一种通信方法,其特征在于,包括:
    第一终端设备接收网络设备发送的第一信令,所述第一信令用于指示所述第一终端设备在非授权频谱上进行用于占用非授权频段的先听后发LBT流程,并且在所述非授权频段上第一时间长度内发送上行信息;
    所述第一终端设备根据第一信令在非授权频谱上进行用于占用非授权频段的LBT流程,并且通过所述非授权频段在第一时间长度内发送上行信息;
    其中,所述第一时间长度为所述第一终端设备在所述非授权频谱上获得的最大信道占用时间的一部分,且所述第一时间长度小于所述最大信道占用时间。
  30. 根据权利要求29所述的方法,其特征在于,其中,所述上行信息包括上行数据或指定信息;且
    所述第一时间长度为预先设置的值,或者
    所述第一时间长度为通过高层信令半静态配置的值;或者
    所述第一时间长度是通过物理层信令通知的。
  31. 根据权利要求30所述的方法,其特征在于,所述第一终端设备通过非授权频段在第一时间长度内发送上行信息,包括:
    当所述第一信令用于指示所述第一终端设备使用非授权频谱在第一时间长度内发送上行数据时,所述第一终端设备通过非授权频段在第一时间长度内发送上行数据;
    当所述第一信令用于指示所述第一终端设备使用非授权频谱在第一时间长度内发 送指定信息时,所述第一终端设备通过非授权频段在第一时间长度内发送上行信息之前,还包括:
    所述第一终端设备确定在第一时间长度起始时刻是否有需要发送的上行数据;其中,
    当所述第一终端设备有上行数据需要发送时,所述第一终端设备通过非授权频段在第一时间长度内发送指定信息和上行数据;
    当所述第一终端设备没有上行数据需要发送时,所述第一终端设备通过非授权频段在第一时间长度内发送指定信息。
  32. 根据权利要求30或31所述的方法,其特征在于,所述指定信息的类型为信道状态信息,测量报告,缓存状态报告,上行参考信号或填充比特。
  33. 根据权利要求29至32中任一所述的方法,其特征在于,
    所述第一信令包括至少一个比特用于指示以下信息的至少一个:上行先听后发LBT流程的发起时刻K1、LBT流程优先级,用于发送所述上行信息的子载波集合、所述第一时间长度和所述指定信息的类型。
  34. 根据权利要求29至33任一项所述的方法,其特征在于,还包括:
    在所述第一时间长度之后,所述第一终端设备使用所述非授权频段在第二时间长度内从所述网络设备接收第一下行控制信息和下行数据,所述非授权频段为所述第一终端设备发送上行信息的非授权频段;其中,
    所述第一下行控制信息用于调度所述第一终端设备或第二终端设备使用所述非授权频段在第二时间长度内接收下行数据。
  35. 根据权利要求34所述的方法,其特征在于,所述第一时间长度结束时刻为K2,所述第二时间长度的起始时刻为K3,所述时刻K2与时刻K3间隔M1个OFDM符号长度,M1为大于0的整数。
    所述M1个OFDM符号中的最后一个OFDM符号和所述第二时间长度的第一个符号相邻。
  36. 根据权利要求34或35所述的方法,其特征在于,所述第二时间长度位于所述第一时间长度之后,且所述第二时间长度与所述第一时间长度之和小于或等于所述最大信道占用时间。
  37. 一种无线装置,其特征在于,包括:
    包括处理器和与所述处理器连接的收发器;
    所述处理器,用于通过所述收发器接收网络设备发送的第一信令,所述第一信令用于指示所述第一终端设备在非授权频谱上进行用于占用非授权频段的先听后发LBT流程,并且在所述非授权频段上第一时间长度内发送上行信息;
    所述处理器,用于通过所述收发器在所述非授权频段上在第一时间长度内发送上行信息;
    其中,所述第一时间长度为所述第一终端设备在所述非授权频谱上获得的最大信道占用时间的一部分,且所述第一时间长度小于所述最大信道占用时间。
  38. 根据权利要求37所述的无线装置,其特征在于,其中,所述上行信息包括上行数据或指定信息;且
    所述第一时间长度为预先设置的值,或者
    所述第一时间长度为通过高层信令半静态配置的值;或者
    所述第一时间长度是通过物理层信令通知的。
  39. 根据权利要求38所述的无线装置,其特征在于,所述通过所述收发器在非授权频段上第一时间长度内发送上行信息,包括:
    当所述第一信令用于指示所述第一终端设备使用非授权频谱在第一时间长度内发送上行数据时,所述处理器用于通过所述收发器在非授权频段上第一时间长度内发送上行数据;
    当所述第一信令用于指示所述第一终端设备使用非授权频谱在第一时间长度内发送指定信息时,还包括:
    所述处理器还用于,在通过非授权频段在第一时间长度内发送上行信息之前,确定在第一时间长度起始时刻是否有需要发送的上行数据;其中,
    当所述第一终端设备有上行数据需要发送时,所述处理器用于通过所述收发器利用非授权频段在第一时间长度内发送指定信息和上行数据;
    当所述第一终端设备没有上行数据需要发送时,所述处理器用于通过所述收发器利用非授权频段在第一时间长度内发送指定信息。
  40. 根据权利要求38或39所述的无线装置,其特征在于,所述指定信息的类型为信道状态信息,测量报告,缓存状态报告,上行参考信号或填充比特。
  41. 根据权利要求37至40中任一所述的无线装置,其特征在于,
    所述第一信令包括至少一个比特用于指示以下信息的至少一个:上行先听后发LBT流程的发起时刻K1、LBT流程优先级,用于发送所述上行信息的子载波集合、所述第一时间长度和所述指定信息的类型。
  42. 根据权利要求37至41任一项所述的无线装置,其特征在于,
    所述处理器还用于,在所述第一时间长度之后,通过所述收发器使用所述非授权频段在第二时间长度内从所述网络设备接收第一下行控制信息和下行数据,所述非授权频段为所述第一终端设备发送上行信息的非授权频段;其中,
    所述第一下行控制信息用于调度所述第一终端设备或第二终端设备使用所述非授权频段在第二时间长度内接收下行数据。
  43. 根据权利要求42所述的无线装置,其特征在于,所述第一时间长度结束时刻为K2,所述第二时间长度的起始时刻为K3,所述时刻K2与时刻K3间隔M1个OFDM符号长度,M1为大于0的整数。
    所述M1个OFDM符号中的最后一个OFDM符号和所述第二时间长度的第一个符号相邻。
  44. 根据权利要求42或43所述的无线装置,其特征在于,所述第二时间长度位于所述第一时间长度之后,且所述第二时间长度与所述第一时间长度之和小于或等于所述最大信道占用时间。
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