WO2019029640A1 - 信息发送方法以及相关设备 - Google Patents

信息发送方法以及相关设备 Download PDF

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Publication number
WO2019029640A1
WO2019029640A1 PCT/CN2018/099706 CN2018099706W WO2019029640A1 WO 2019029640 A1 WO2019029640 A1 WO 2019029640A1 CN 2018099706 W CN2018099706 W CN 2018099706W WO 2019029640 A1 WO2019029640 A1 WO 2019029640A1
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WIPO (PCT)
Prior art keywords
channel
listening
sub
band
terminal device
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PCT/CN2018/099706
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English (en)
French (fr)
Inventor
李�远
官磊
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华为技术有限公司
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Publication of WO2019029640A1 publication Critical patent/WO2019029640A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/002—Transmission of channel access control information
    • H04W74/006—Transmission of channel access control information in the downlink, i.e. towards the terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0808—Non-scheduled access, e.g. ALOHA using carrier sensing, e.g. carrier sense multiple access [CSMA]

Definitions

  • the present invention relates to the field of communications, and in particular, to a method for transmitting information and related devices.
  • LBT Listen-Before-Talk
  • UMB Unlicensed Frequency Bands
  • the LBT technology means that before data transmission, the terminal device must first perform channel interception on the carrier to determine whether other devices are occupying the carrier for data transmission. If the terminal device successfully detects the carrier, the terminal device can preempt the carrier for data transmission. If the terminal device fails to listen to the carrier, the terminal device cannot preempt the carrier for data transmission. After occupying the carrier, the terminal device can continuously send information within the Maximum Channel Occupancy Time (MCOT). After exceeding the maximum channel occupation time, the terminal device needs to actively release the carrier to provide for use by other devices. After releasing the channel, the terminal device needs to re-execute the LBT to access the carrier again.
  • LBT technology can ensure the friendly coexistence between multiple devices sharing unlicensed frequency bands, and reduce the probability of collision between multiple devices due to preemption of spectrum resources of unlicensed frequency bands.
  • the current LBT technology has a low detection efficiency. Especially when the communication system is relatively busy, a large number of devices preempt the channel, and the probability of collision between devices is greatly increased, resulting in further detection efficiency of the terminal device. Lower, the terminal device takes a long time to access the channel for data transmission.
  • the embodiment of the present application provides an information transmission and related device, which can effectively improve the detection efficiency of a carrier.
  • a method for transmitting information including:
  • the terminal device receives the indication information sent by the network device, where the indication information is used to indicate that the listening type of the channel sensing performed by the terminal device on the first sub-band is a long-listening type before transmitting the first uplink information. And instructing, by the terminal device, that the interception type of channel sensing performed on the second sub-band is short listening type, and the first channel interception is Channel interception performed by the first uplink information, where the second channel is intercepted as channel interception performed for the second uplink information;
  • the terminal device performs a first channel interception on the first subband, and performs a second channel snooping on the second subband, where the first channel interception is a channel interception of the short snoop type.
  • the second channel listening is channel interception of the long listening type;
  • the terminal device When the interception result of the first channel listening and the listening result of the second channel listening satisfy the first preset condition, the terminal device sends the first on the first subband Uplink information.
  • the first preset condition is that the listening result of the first channel listening is channel listening success, and the intercepting of the second channel listening The result is successful channel listening.
  • the terminal device sends the second uplink on the second sub-band when the interception result of the second channel listening is that channel listening is successful. information.
  • the uplink authorization or the common physical downlink control channel included in the indication information is used to indicate that the terminal device is to the first before sending the first uplink information.
  • the listening type of channel listening by the subband is the long listening type.
  • the uplink authorization or the common physical downlink control channel included in the indication information is used to indicate that the terminal device sends the second uplink information to the second
  • the listening type of channel listening by the subband is the short listening type.
  • the uplink authorization or the common physical downlink control channel included in the indication information is used to indicate that the terminal device sends the third uplink information to the third
  • the listening type of channel listening by the subband is the short listening type.
  • the terminal device performs third channel snooping on the second subband, wherein the third channel snooping is channel sniffing of the short snoop type Listening, the third channel is listening for channel interception performed on the second uplink information; when the listening result of the third channel listening is channel listening success, the terminal device is in the The second uplink information is sent on the two sub-bands.
  • the third channel snooping is channel sniffing of the short snoop type Listening
  • the third channel is listening for channel interception performed on the second uplink information
  • the terminal device is in the The second uplink information is sent on the two sub-bands.
  • the terminal device when the interception result of the second channel is a channel listening failure, and the listening result of the third channel is successful, the terminal device is in the second The second uplink information is sent on the subband.
  • the listening result of the second channel listening is a channel listening failure
  • the listening result of the third channel listening is that the channel listening is successful
  • the terminal device gives up the The first uplink information is sent on a subband.
  • the first uplink information is used by the network device to schedule uplink information sent by the terminal device
  • the second uplink information is used by the network device to schedule the terminal device
  • the uplink information sent is the same as the start time of the first uplink information and the start time of the second uplink information.
  • the channel listening of the long-listening type is a random back-off idle channel evaluation; and the short-listening type channel sensing is a single-slot idle channel evaluation.
  • the first sub-band is a sub-band of any one of the sub-band sets indicated by the network device as the long-listening type, where the first Both the subband and the second subband belong to the set of subbands.
  • the terminal device determines that the second sub-band is a sub-band that performs the long-listening type channel interception, where the second sub-band is The terminal device randomly selects or arbitrarily selects a sub-band in the set of sub-bands, and the first sub-band and the second sub-band all belong to the sub-band set.
  • the terminal device when the handover listening type condition is met between the first subband and the second subband, the terminal device performs the foregoing on the first subband. Performing, by a channel, the second channel sensing on the second sub-band; wherein,
  • the handover listening type condition includes at least one of: a channel congestion degree of the first subband is greater than a channel congestion degree of the second subband; and a channel fading degree of the first subband is greater than the The degree of channel fading of the second sub-band.
  • the indication information is further used to indicate that the listening type of the channel sensing performed by the terminal device on the third sub-band is the Short listening type
  • the terminal device performs fourth channel interception on the third sub-band, wherein the fourth channel interception is channel snooping of the short-listening type;
  • the interception result of the fourth channel listening is that the channel listening is successful, and the listening result of the second channel listening is that the channel listening is successful, the terminal device is on the third sub-band. Sending the third uplink information.
  • an information transmitting apparatus comprising means for performing the method of any of the first aspects.
  • a third aspect provides a terminal device, a memory, and a processor and a communication module coupled to the memory, wherein: the communication module is configured to send or receive externally sent data, and the memory is used to store, for example, the first The implementation code of the method of any of the preceding claims, wherein the processor is operative to execute the program code stored in the memory, i.e., to perform the method as described in any one of the first aspects.
  • a computer readable storage medium in a fourth aspect, storing a computer program, the computer program being executed by a processor to implement the method of any of the first aspects.
  • a communication system including a network device and a terminal device, wherein the network device and the terminal device are capable of communication, and the terminal device is any one of the first aspect. Terminal Equipment.
  • FIG. 1 is a schematic diagram of multi-carrier channel sensing provided by the prior art
  • FIG. 2 is a schematic diagram of another multi-carrier channel sensing provided by the prior art
  • FIG. 3 is an interaction diagram of an information sending method provided by an embodiment of the present application.
  • FIG. 4 is a schematic diagram of multi-carrier channel sensing provided by an embodiment of the present application.
  • 5A-5B are schematic diagrams of multi-carrier channel sensing before and after handover, respectively;
  • FIG. 6 is a schematic diagram of another multi-carrier channel sensing provided by an embodiment of the present application.
  • FIG. 7 is a schematic diagram of an interception manner of indicating a carrier by an implicit manner according to an embodiment of the present application.
  • FIG. 8 is a schematic structural diagram of a terminal device according to an embodiment of the present disclosure.
  • FIG. 9 is a schematic structural diagram of an information sending apparatus according to an embodiment of the present application.
  • the listening type of channel sensing involved in the embodiment of the present invention is first introduced.
  • the listening type of the channel listening may include: channel listening of a long listening type and channel sensing of a short listening type.
  • Channel snooping of long listening type usually refers to longer channel sensing from the beginning of channel interception to channel listening to power consumption.
  • the channel listening of the long listening type may be a Random Backoff Clear Channel Assessment (CCA).
  • CCA Random Backoff Clear Channel Assessment
  • the principle of the random backoff idle channel evaluation is that the terminal device uniformly generates a backoff counter N randomly between 0 and the initial contention window (CWS), and channels the carrier with the granularity of the listening time slot (for example, the duration is 9 us). Listening, if the channel is detected to be idle in the listening time slot, the back-off counter is decremented by one.
  • the back-off counter is suspended, that is, the back-off counter N is The channel remains unchanged during the busy time until the channel is idle, and the backoff counter is counted again.
  • the backoff counter is reset to zero, the channel is considered to be successful, and the terminal device can immediately occupy the channel to send uplink information.
  • the terminal device may wait for a period of time without immediately transmitting the uplink information, and wait for the end, and then listen for an additional time slot before the time when the uplink information needs to be sent, if If the channel is idle in the extra time slot, the channel is considered to be successful and the information can be sent immediately.
  • the channel listening is said to have failed. It can be understood that the foregoing example is only used as an example. In other implementation manners, the channel sensing of the long-listening type may also be other time-consuming channel sensing, which is not specifically limited herein.
  • Channel snooping of short snooping type generally refers to shorter channel snooping from the beginning of channel interception to channel snooping into power consumption.
  • the channel listening of the short listening type may be a single slot idle channel evaluation or a one shot idle channel evaluation.
  • the principle of the single-slot idle channel evaluation is that the terminal device performs a single-slot channel listening with a length of a preset time length (for example, a preset time length of 25 us), if the terminal device detects the channel in the single time slot. If the channel is idle, the terminal device can immediately access the channel to send uplink information. If the channel is busy, the terminal device abandons sending the uplink information, indicating that the channel is listening.
  • the channel listening mode of the short-listening type may be other channel interception capable of quickly detecting the carrier, which is not limited herein.
  • the listening duration of the channel listening is not limited to 25 us, and may be more or less; the number of channel listening is not limited to one, but may be two, three or more. This is not specifically limited.
  • the channel state includes two types: the channel is idle, and the channel is busy.
  • the criterion for determining the channel state is that the terminal device compares the power on the received carrier in the listening time slot with the energy detection threshold (CCA-ED, CCA-Energy Detection). If the energy detection threshold is higher than the energy detection threshold, the channel state is the channel. Busy, if below the energy detection threshold, the channel state is channel idle.
  • CCA-ED CCA-Energy Detection
  • the channel listening of the long listening type needs to be considered as successful when the channel listening result of multiple listening slots is channel idle, and the channel listening of the short listening type.
  • the reliability of the listening result of the channel listening of the long listening type is greater than that of the short listening type.
  • the reliability of the listening result of the listening however, the listening success rate of the channel listening of the long listening type is smaller than the listening success rate of the channel listening of the short listening type.
  • the terminal device Before the terminal device sends the uplink information to the network device by using the carrier, the terminal device may perform channel sounding on the carrier by using channel interception of a long-listening type, or may perform channel sounding on the carrier by using channel interception of a short-listening type. The reason why the terminal device listens to the carrier by using different types of channel sounding will be described in detail below.
  • the terminal device Before transmitting the uplink information to the network device by using the carrier, the terminal device generally needs to perform channel interception of the long-listening type on the carrier to ensure the reliability of the interception result. However, in a special case, the terminal device may perform short-listening type channel sensing before transmitting uplink information to the network device by using the carrier.
  • the network device may not release the channel, but provide the remaining maximum channel occupation time to the terminal device to send uplink information, so as to improve the terminal device.
  • Opportunity to access the carrier For example, the maximum channel occupancy time is 8 milliseconds, and the network device sends the downlink information for 2 milliseconds.
  • the network device can share the remaining 6 milliseconds to the terminal device, that is, the terminal device sends the uplink information for the remaining 6 milliseconds.
  • a short listening type of channel listening can be used to access the channel.
  • the network device has performed the channel sensing of the long-recognition type with high reliability before the carrier is preempted.
  • the uplink information that the terminal device needs to send is the remaining maximum channel occupied by the shared network device.
  • the terminal device In time, only a simple short-listening type of channel interception is required to occupy the carrier to send uplink information to the network device.
  • the terminal device For uplink information that exceeds the remaining maximum channel occupancy time provided by the network device, the terminal device must perform channel interception of a long listening type to ensure fair coexistence with other surrounding wireless nodes on the unlicensed spectrum.
  • the 4Generation mobile communication technology (4G) introduces the Enhanced Licensed Access Using Long Term Evolution (LAA-LTE) technology.
  • LAA-LTE Long Term Evolution
  • the terminal equipment expands the available spectrum from the licensed frequency band to the unlicensed frequency band to transmit uplink information to the network device through carrier aggregation (CA) technology, thereby improving the transmission speed of the uplink information.
  • uplink information transmission may be performed in units of sub-bands.
  • the sub-band (for example, the first sub-band or the second sub-band or the third sub-band) is a segment of a frequency domain resource for carrying uplink information.
  • the subband includes at least one subcarrier, or the subband includes at least one physical resource block (PRB).
  • PRB physical resource block
  • the subband is a frequency band corresponding to a bandwidth of 5 MHz or 10 MHz or 20 MHz, for example, the frequency band corresponds to a frequency domain range occupied by one carrier in the LTE system.
  • the subband is a carrier (for example, the first subband is a first carrier, the second subband is a second carrier, and the third subband is a third carrier).
  • BWP Band Width Part
  • the sub-band is a frequency domain unit that performs channel interception on the terminal device, for example, when the terminal device performs LBT, using the detected power in the listening time slot on the sub-band and the sub-band
  • the CCA-ED is compared with the corresponding CCA-ED to determine whether the channel is busy or idle. For example, if the terminal device performs the LBT successfully for the sub-band, the terminal device can occupy the sub-band to send uplink information (for example, the first uplink information or the first Two uplink information or third uplink information).
  • uplink information for example, the first uplink information or the first Two uplink information or third uplink information.
  • the following description is made by taking the sub-band including one sub-carrier as an example.
  • the first sub-band is called a first carrier
  • the second sub-band is called a second carrier
  • the third sub-band is called a third sub-band.
  • a carrier, a set of subbands is called a carrier set.
  • the terminal device performs carrier aggregation on carriers of two unlicensed frequency bands of the first carrier CC1 and the second carrier CC2 to transmit uplink information.
  • the downlink information sent by the network device after preempting the first carrier CC1 of the carrier does not occupy the maximum downlink channel occupation time, but the duration of the uplink information prepared by the terminal device is greater than the remaining downlink maximum channel occupation time.
  • the terminal device may not use the remaining downlink maximum channel occupation time shared by the network device to send uplink information.
  • the terminal device must perform channel interception of a long-listening type for the first carrier CC1; for the second carrier CC2, the network device is The downlink information sent after the second carrier CC2 is occupied is occupied by the maximum channel occupation time, and the network device does not have the remaining maximum channel occupation time to share the uplink information to the terminal device. Therefore, the terminal device needs to perform the long listening type on the second carrier CC2. Channel listening.
  • the terminal device can successfully perform carrier aggregation to send uplink information only when channel sensing for the first carrier CC1 and the second carrier CC2 is successful.
  • the maximum channel occupation time may be determined according to a channel access priority class (Priority Class) of the terminal device.
  • a channel access priority class Principal Class
  • the shorter the maximum channel occupation time of the terminal device, and vice versa the lower the channel access priority of the terminal device. The more difficult it is for the terminal device to successfully preempt the carrier for data transmission, but the longer the maximum channel occupancy time of the terminal device.
  • the prior art provides a method for transmitting information.
  • the terminal device can perform multi-carrier channel sensing when performing multi-carrier aggregation, and only needs to use the first carrier CC1.
  • the channel listening of the type of the interception type of the executive is performed, and the channel sensing of the short listening type of the second carrier CC2 is performed. That is, the terminal device converts the second carrier CC2 from the channel listening of the long listening type to the channel listening of the short listening type to improve the listening success rate of the terminal device.
  • the terminal device may send uplink information to the network device on the first carrier CC1 and the second carrier CC2.
  • the channel listening efficiency of the terminal device is also not high.
  • the present application provides an information sending method and related device, which can effectively improve the listening efficiency of the terminal device. A detailed description will be given below.
  • FIG. 3 is an interaction diagram of an information sending method provided by an embodiment of the present application. As shown in FIG. 3, the information sending method in the embodiment of the present application includes the following steps:
  • the network device sends the indication information to the terminal device.
  • the terminal device receives the indication information sent by the network device.
  • the network device mainly refers to a transit device connecting the access network and the core network, that is, the network device sends the uplink information received from the access network to the core network, and the slave network will The received downlink message is sent to the access network.
  • the network device may generally include: a macro eNodeB/NodeB, a micro eNodeB/NodeB, a pico base station, a home eNodeB/NodeB, a distributed base station, a remote radio head, and a relay. Etc., there is no specific limit here.
  • the terminal device is a logical entity, and may be any one of a User Equipment and an Internet of Things (IoT) device.
  • the user equipment may be a smart phone, a smart watch, a smart tablet, etc.
  • the Internet of Things device may be a wearable device (WD), a meter, an environmental monitoring device, etc., here No specific limitation.
  • the terminal device may access the network device by using a frequency division multiple access (FDMA) technology.
  • the frequency division multiple access (AP) technology includes: Single-Carrier Frequency Division Multiple Access (SC-FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), or the like.
  • SC-FDMA Single-Carrier Frequency Division Multiple Access
  • OFDMA Orthogonal Frequency Division Multiple Access
  • the frequency division multiple access technology is not specifically limited herein.
  • the indication information may be used to indicate that the listening type of the channel sensing performed by the terminal device on the first carrier is a long listening type before sending the first uplink information, and the indication station The listening type of the channel sensing performed on the second carrier is the short listening type before the terminal device sends the second uplink information.
  • the terminal device performs a first channel interception on the first carrier, and performs a second channel interception on the second carrier, where the first channel interception is a channel listening type of a short listening type, where the Two channel listening is channel sensing of the long listening type. It can also be understood that the first channel interception is channel interception performed for the first uplink information, and the second channel snooping is channel interception performed for the second uplink information.
  • the first carrier and the second carrier all belong to the carrier set.
  • the carrier set is a set of carriers used when the terminal device performs carrier aggregation. It should be understood that the set of carriers may further include the first carrier and the second carrier, and may also include other carriers, for example, a third carrier, and the like. It should be understood that the carrier set specifically includes which carriers can be determined by the terminal device, which is not limited in this embodiment. For example, as shown in FIG.
  • the carrier set includes 4 carriers, where CC1 is a second carrier, and is instructed by the network device to use channel interception of a short-listening type and actually performs channel interception of a long-listening type, CC2 is a carrier, which is instructed by the network device to use channel interception of a long-listening type and actually performs channel interception of a short-listening type, the set of carriers further including CC3 that is instructed by the network device to use channel interception of a long-listening type and CC4 (referred to as a third carrier) that is instructed by the network device to use channel interception of the short listening type.
  • CC1 is a second carrier
  • CC2 is a carrier, which is instructed by the network device to use channel interception of a long-listening type and actually performs channel interception of a short-listening type
  • the set of carriers further including CC3 that is instructed by the network device to use channel interception of a long-listening type and CC4 (referred to as a third
  • the carrier set further includes a third carrier.
  • the first carrier may also be replaced with the first subband
  • the second carrier may be replaced with the second subband
  • the third carrier may be replaced with the third subband. It can also be called a subband collection.
  • the number of carriers in the carrier set may also be other.
  • the carrier set may also include only the first carrier and the second carrier, or the carrier set may further include a fourth carrier, a fifth carrier, or more.
  • the carrier set is a set of carriers used by the terminal device to perform multi-carrier channel listening.
  • the terminal device performs channel interception of a long-listening type on one of the carriers in the carrier set, performs channel interception of a short-listening type on other carriers, and performs channel-detection on a carrier of a long-listening type. If the channel listening of the short-listening type carrier is successful, the terminal device can occupy the short-listening type carrier to send the uplink information.
  • the second carrier is a carrier that is randomly selected by the terminal device in the carrier set, that is, the second carrier may be any one of the carrier types, and the network device indicates that the long-term listening is
  • a carrier of a type may also be a carrier of any shortlisted type indicated by the network device as any one of the listening types.
  • the terminal device selects a carrier for performing the long-listening type in a uniformly random manner in the carrier set, and the carrier selected to perform the long-listening type channel interception is exactly the second carrier.
  • the terminal device it is also possible for the terminal device to select a carrier that is instructed to perform long-listening type channel sensing by such a uniform random selection, but this embodiment only describes the case where the second carrier is just selected.
  • the second carrier is a carrier that is arbitrarily selected by the terminal device in a carrier set. That is, the terminal device uses the carrier in the carrier set as the second carrier to perform channel interception of the long-listening type, which is arbitrarily selected by the terminal device in a carrier set by using a specific implementation algorithm, for example, a carrier may be selected.
  • the carrier with a small degree of congestion in the set, or the carrier with a small degree of channel fading, is not limited in this embodiment.
  • the terminal device After the terminal device selects the second carrier in the carrier set to perform channel interception of the long-listening type, the terminal device performs channel interception of the long-listening type on the second carrier, that is, the second channel is intercepted, and is for the carrier.
  • the first carrier in the set performs channel sensing of the short listening type, that is, first channel listening.
  • the first carrier, the second carrier, and the third carrier are carriers in an unlicensed frequency band.
  • the unlicensed band includes available unlicensed bands and non-available licensed bands.
  • the unlicensed band mainly refers to the available unlicensed band.
  • Available unlicensed bands include: 2.3GHz band (Europe), 3.5GHz band (US), 2.4GHz band/5GHz band/60GHz band (global), and so on. It can be understood that the available unlicensed frequency bands are not absolutely constant. With the development of society and technology, the available unlicensed frequency bands may also change due to re-planning.
  • the above examples of available unlicensed frequency bands are only an example. Not specifically limited.
  • the guard interval between carriers in order to avoid mutual interference between carriers, is usually set to 15 kHz, but as the anti-frequency offset capability is improved, the guard interval between carriers can be made smaller and smaller.
  • the example of the guard interval between the above carriers is merely an example and is not specifically limited.
  • the first uplink information is used by the network device to schedule uplink information sent by the terminal device on the first carrier
  • the second uplink information is used by the network device to schedule the terminal.
  • the start time of the first uplink information and the start time of the second uplink information are the same. That is, when channel sensing for the first carrier and the second carrier is successful, the terminal device starts transmitting uplink information at the same time of the respective carriers. It can be understood that the transmission filter and the reception filter of the terminal device are both non-ideal filtering. If the terminal device transmits information on one carrier and performs interception on another carrier in the same time unit, the information is sent.
  • the information on the carrier is leaked to the carrier on which the channel is being intercepted, so that the carrier performing the channel interception cannot be successfully detected. Therefore, only when the start times of the first uplink information and the second uplink information are the same, different carriers do not perform information transmission and channel sensing at the same time, and the terminal device can simultaneously listen on the first carrier and the second carrier. Success and start sending messages at the same time.
  • the start time of the first uplink information and the start time of the second uplink information are both a subframe boundary of an uplink subframe, a start boundary of an uplink symbol, or an intermediate moment of an uplink symbol, and the like.
  • the intermediate time of the uplink symbol may be 25us after the start boundary of the uplink symbol, or 25us+TA (Timing Advance) after the start boundary of the uplink symbol, and the like. It can be understood that the intermediate time of the foregoing uplink symbol is not limited to the above example, and is not specifically limited herein.
  • the first uplink information is an unscheduled grant uplink transmission sent by the terminal device on the first carrier.
  • the uplink information of the terminal device does not need to be scheduled by the network device, but is transmitted by the terminal device autonomously.
  • Such a transmission mode that does not need to be scheduled may be referred to as a Grant Free UpLink or Grant Less Uplink (GUL) transmission method, or an Autonomous UL (AUL) transmission method.
  • SUL scheduling-based uplink transmission
  • the network device sends the uplink information by using the dynamic uplink grant scheduling terminal device, and the GUL radio resource used for the GUL transmission includes the time domain and the frequency domain resource.
  • the GUL radio resource is configured to the terminal device by using RRC signaling and or dynamic DCI signaling.
  • the GUL time domain resource is periodic, or the GUL time domain resource is a persistent time domain resource, and the uplink information scheduled based on the uplink grant scheduling is valid only for a limited number of time units.
  • the terminal device reports Grant Free UpLink Control Information (G-UCI), which is control information corresponding to the uplink data, when the uplink information is transmitted in the GUL manner.
  • G-UCI Grant Free UpLink Control Information
  • the G-UCI includes HARQ process number information, New Data Indicator (NDI) information of the HARQ process corresponding to the uplink information, Redundancy Version (RV) information corresponding to the uplink information, and the terminal. At least one of the user identification (denoted as UE ID) information of the device. Similar to the first uplink information and the second uplink information, where the network device schedules information sent by the terminal device on the first carrier, when the first uplink information is used by the terminal device in the first carrier. The uplink information of the first uplink information and the second uplink information is the same when the uplink-free transmission is sent, and the second uplink information may be an uplink transmission without scheduling, or may be an uplink sent by the network device scheduling terminal device. transmission.
  • the terminal device when the first uplink information is the scheduling-free grant uplink information sent by the terminal device on the first carrier, the terminal device does not need to receive the channel that is sent by the network device to indicate that the channel is performed on the first carrier.
  • the indication information of the interception type of the interception, or the network device does not need to send the indication information indicating the type of the interception for performing channel interception on the first carrier to the terminal device, but may be determined by a preset criterion.
  • the listening type for channel sensing on the first carrier is a long listening type. For example, before the terminal device sends the first uplink information in a scheduling-free manner, the default rule is to use the long-listening type for channel sensing. It should be understood that the pre-set criteria may be as specified by the agreement or regulation.
  • the second uplink information is an unscheduled grant uplink transmission sent by the terminal device on the first carrier.
  • the first uplink information is the same as the start time of the second uplink information, where the first uplink information may be an unscheduled permission uplink transmission, or may be an uplink transmission sent by the network device scheduling terminal device. .
  • the first uplink information may include at least one of the uplink data information, the pilot information, and the uplink control information.
  • the first uplink information may be carried in an uplink uplink channel (Physical Uplink Shared Channel, PUSCH), or may be carried in an uplink uplink control channel (PUCCH).
  • PUSCH Physical Uplink Shared Channel
  • PUCCH uplink uplink control channel
  • the first uplink information is uplink information that is sent by the network device by using an uplink grant. The same is true for the second uplink information.
  • the terminal device immediately occupies the channel to send uplink information after the channel interception performed for a certain carrier is successful; or the starting moment of the uplink information is equal to the end time of the channel listening. That is, when the terminal device uses a single-slot CCA for channel sounding on the carrier, the listening time slot is followed by the uplink information.
  • the terminal device uses the random back-off CCA for channel sounding on the second carrier, the last listening time slot (the time slot in which the back-off counter is zeroed, or the additional time slot after the back-off counter is zeroed)
  • the uplink information may be the first carrier or the second carrier or the third carrier; the uplink information may be the first uplink information or the second uplink information or the third uplink information.
  • the terminal device selects the first carrier and the second carrier to perform uplink information transmission according to the first carrier and the second carrier sensing result.
  • the terminal device may randomly select the carrier or according to The channel conditions of the first carrier and the second carrier are performed on the first carrier, and the channel sensing of the short-listening type is performed on the second carrier, thereby performing channel interception on the second carrier, thereby effectively improving channel interference of the terminal device. The success rate.
  • the carrier that randomly performs the long-listening type channel interception is randomly selected by adding the second carrier to the carrier set performing multi-carrier sensing. Then, it is possible to perform a short-listening type channel interception on the first carrier and a long-listening type on the second carrier, in which the idle second carrier is selected to perform long-listening type channel interception or arbitrarily selected. Channel listening to improve the success rate of listening.
  • the indication information sent by the network device to the terminal device is used to indicate that the listening type of the channel sensing performed by the first carrier CC1 is a long listening type, and the channel sensing of the second carrier CC2 is detected.
  • the listening type is a short listening type.
  • the terminal device determines to perform channel detection on the short carrier type for the first carrier CC1. Listening, performing channel interception of a long listening type on the second carrier CC2.
  • the terminal device may select the first carrier CC1 and the second carrier CC2 to perform uplink information transmission according to the interception result of the first carrier CC1 and the second carrier CC2.
  • the handover listening type condition includes at least one of the following: a channel congestion degree of the first carrier CC1 is greater than a channel congestion degree of the second carrier CC2; and a channel fading degree of the first carrier CC1 is greater than The degree of channel fading of the second carrier CC2.
  • the terminal device performs channel sensing of the short-listening type for the first carrier CC1 and the channel listening for the long-listening type of the second carrier CC2, the channel listening is successful, the terminal is successful.
  • the device may send the first uplink information on the first carrier, and/or send the second uplink information on the second carrier.
  • the terminal device may send the second uplink message on the second carrier, if the channel is successfully monitored.
  • the terminal device performs multi-carrier channel interception performed in a carrier set including the first carrier and the second carrier, and the first carrier that performs the first channel interception of the short-listening type, the terminal device is in the first Transmitting the first uplink information on a carrier, in addition to satisfying the success of the first channel, and additionally satisfying the second channel listening success of performing the long listening type on the second carrier; if the second carrier is on the second carrier The two-channel interception fails, and the first uplink information cannot be sent even if the terminal device detects idle on the first carrier.
  • the terminal device mentioned later is also for multi-carrier channel sensing including the third carrier, wherein the operation of the third carrier is similar to the first carrier.
  • the terminal device determines that the second carrier performs channel interception of the long-listening type
  • the following two methods may be included for how to select the first carrier for performing short-listening type channel sensing in the carrier set.
  • the terminal device performs channel interception of the long-listening type on the second carrier, and performs channel interception of the short-listening type for all other carriers in the carrier set.
  • Listening, or saying, that the channel listening type performed by any one of the carrier sets (or each of the other carriers) performs the channel sensing of the short listening type, and the first carrier may be referred to as a carrier.
  • the first carrier may be the carrier that is indicated by the network device before the first uplink information is sent, and the channel listening type of the first carrier is a long-listening type carrier, or may be indicated by the network device to send the first.
  • the channel sensing type for the first carrier is a short listening type carrier.
  • the terminal device when the first carrier is indicated by the network device, before the first uplink information is sent, when the channel sensing type of the first carrier is a short listening type carrier, the terminal device performs the first carrier. Channel sensing of the short-listening type, and performing second channel sensing of long-listening type channel sensing on the second carrier, and detecting channel interception of the short-listening type on the first carrier The listening result is that the channel is successfully detected, and the terminal device transmits the first uplink information on the first carrier when the interception result of the second channel is that the channel is successfully detected.
  • the condition for successful listening is that the channel listening of the carrier (second carrier) that actually performs long-listening type channel interception is successful, and the channel listening of the short-listening type of the carrier is successful, and thus is limited by such detection.
  • the second channel information of the second carrier is additionally satisfied to transmit the third uplink information. For example, as shown in FIG.
  • the carrier set includes ⁇ CC1, CC2, CC3, CC4 ⁇ , the first carrier is CC4, and the second carrier is CC1, and the indication information indicates that the terminal device performs short-listening type channel sensing on CC4. Channel interception of the short listening type is also performed on CC1. Since the carrier set further includes the CC2 and the CC3, the multi-carrier sensing actually performed by the terminal device performs the channel sensing of the long-listening type on the CC1, and performs the channel sensing of the short-listening type on the CC2, CC3, and CC4.
  • the terminal device can be in the CC4 when the listening result of the terminal device is successful for the interception of the CC1 and the listening result of the CC4 is successful.
  • the first uplink information is sent. If the interception result of the terminal device to the CC1 is that the interception fails, the CC4 cannot be used to send the first uplink information (whether or not the CC4 is successfully detected).
  • the terminal device performs channel interception of the long-intercept type on the second carrier, and indicates, for the other network device in the carrier set, that the long-listening is performed.
  • the carrier of the type channel interception performs channel interception of the short-listening type, or is indicated by the network device to perform the long-listening type channel sensing for any one (or each) of the set of carriers.
  • the channel listening type performed by the carrier performs the channel sensing of the short-listening type.
  • the first carrier may be referred to as any one of the carrier types, and the network device indicates the long-term listening.
  • Type of carrier That is to say, except for the first carrier using the long listening type for channel sensing, all other carriers in the carrier set that are originally indicated as long listening type channel listening are converted into short listening type to perform channel sensing.
  • the indication information is further used to indicate that the listening type of the channel sensing performed by the terminal device on the third carrier is the short listening type before transmitting the third uplink information.
  • the terminal device is further configured to perform fourth channel interception on the third carrier, where the fourth channel interception is channel snooping of the short listening type. It can also be said that the fourth channel is intercepted as channel interception performed for the third uplink information. The interception result of the fourth channel is successful, and the terminal device is sent on the third carrier when the interception result of the second channel is successful.
  • the third uplink information is further configured to perform fourth channel interception on the third carrier, where the fourth channel interception is channel snooping of the short listening type. It can also be said that the fourth channel is intercepted as channel interception performed for the third uplink information. The interception result of the fourth channel is successful, and the terminal device is sent on the third carrier when the interception result of the second channel is successful.
  • the third uplink information is further used to indicate that the listening type of the channel sens
  • the carrier set includes the first carrier indicated as the long-listening type channel listening and the second carrier indicated as the short-listening type channel
  • the third carrier to be intercepted, because in a carrier set that performs multi-carrier channel listening, the terminal device actually performs a short-listening type channel interception on any one of the carriers (whether the carrier is indicated as a long-listening type or The short listening type), the condition that the listening success is successful, the channel sensing of the carrier (second carrier) that actually performs the long listening type channel listening is successful, and the channel listening of the short listening type of the carrier is successful. Therefore, limited to this interception mode, even if the third carrier is indicated as the short listening type, the second channel information of the second carrier is additionally satisfied to transmit the third uplink information.
  • the carrier set includes 4 carriers, where CC1 is the second carrier, and the network device indicates that the short-listening type channel is used for listening, and CC2 is the first carrier, and the network device indicates that the long-term detection is used.
  • the listening channel of the listening type, CC4 is the third carrier, and the network device indicates that the channel listening of the short listening type is used, and the terminal device actually performs channel interception of the long listening type on CC1, and performs short listening on CC2 and CC4.
  • a type of channel is intercepted.
  • CC2 or CC4 needs to satisfy the channel listening of the CC1 long-listening type to send uplink information.
  • the third uplink information is that the network device schedules an uplink message sent by the terminal device on the third carrier.
  • the start time of the first uplink information, the start time of the second uplink information, and the start time of the third uplink information are the same. That is, when channel sensing for the first carrier, the second carrier, and the third carrier is successful, the terminal device starts transmitting uplink information at the same time of the respective carriers.
  • the terminal device needs to send the third uplink information on the third carrier, in addition to satisfying the fourth channel listening success, and additionally needs to satisfy the second channel sensing success of performing the long listening type on the second carrier. If the second channel on the second carrier fails to listen, the third uplink information cannot be sent even if the terminal device detects idle on the third carrier.
  • the third uplink information may include at least one of the uplink data information, the pilot information, and the uplink control information.
  • the third uplink information may be carried in the PUSCH or may be carried in the PUCCH. Further, the third uplink information is uplink information that is sent by the network device by using an uplink grant.
  • the third uplink information is an unscheduled grant uplink transmission sent by the terminal device on the first carrier.
  • the start time of the third uplink information and the first uplink information and the start time of the second uplink information are the same, where the first uplink information may be an unscheduled permission uplink.
  • the transmission may also be an uplink transmission sent by the network device scheduling terminal device, and the second uplink information may be an uplink transmission without scheduling permission, or may be an uplink transmission sent by the network device scheduling terminal device.
  • the terminal device may perform short-listening type channel interception on the second carrier, which is called third channel interception, and if the third channel interception of the second carrier CC2 is intercepted, the channel detect is performed. If the listening is successful, the terminal device may send the second uplink message on the second carrier. In particular, if the terminal device performs channel sensing on the second carrier CC2 for the long-listening type (the second channel listening), the channel listening failure is performed, but the short-listening type is performed on the second carrier CC2. If the channel listening is successful, the terminal device may send the second uplink message on the second carrier.
  • the terminal device may perform short-listening type channel interception on the second carrier, which is called third channel interception, and if the third channel interception of the second carrier CC2 is intercepted, the channel detect is performed. If the listening is successful, the terminal device may send the second uplink message on the second carrier. In particular, if the terminal device performs channel sensing on the second carrier CC2 for the long-listening type (
  • the terminal device performs short-listening type channel interception on the second carrier and the terminal device performs long-listening type channel sensing on the second carrier, that is, the terminal device performs on the second carrier. While the channel listening of the long-listening type is also performed, the channel sensing of the short-listening type is performed on the second carrier.
  • the terminal device is originally indicated by the network device to use the single-slot CCA access channel on the second carrier, so if the terminal device performs long-listening type channel interception failure on the second carrier, It is possible to perform a short listening type channel sensing before the second uplink information starting time, if the terminal device performs a short listening type on the second carrier. After the channel is successfully detected, the second uplink information may be sent on the second carrier.
  • the terminal device when the terminal device performs long-listening type channel sensing failure for the second carrier, and the terminal device performs short-listening type channel sensing for the second carrier, the terminal device may be in the second The second uplink information is sent on the carrier, but the terminal device cannot occupy the first carrier to send the first uplink information, or abandon the first uplink information on the first carrier.
  • the terminal device In the multi-carrier listening mode, a carrier that is originally listening for the long-listening type channel is switched to the short-listening type channel listening, and the precondition of the information transmitted by the access channel is that the short-listening type channel is completed on the carrier.
  • the carrier (the first carrier) that performs the long-listening type channel interception in the carrier set is required to perform the channel sensing of the long-listening type. Therefore, if the channel sensing of the long-listening type is not completed on the second carrier, Falling back to the short listening type channel listening and completing the channel listening, the terminal device may send the second uplink information on the second carrier, but does not satisfy the condition that the first carrier channel sends the first uplink information, and therefore cannot be in the The first uplink information is sent on the first carrier.
  • the carrier set includes ⁇ CC1, CC2, CC3 ⁇ , the first carrier is CC1, and the second carrier is CC2, and the indication information indicates that the terminal device performs short-listening type channel sensing on CC1, and performs long-term CC2.
  • the channel type of the interception type, and the network device also instructs to perform channel interception of the long listening type on CC3.
  • the terminal device performs channel interception of the long-listening type on CC1, and performs channel interception of the short-listening type on CC2 and CC3.
  • the terminal device can also perform short-listening type channel sensing for CC1 at the same time, when the terminal device fails to listen to the channel (the first listening) of the long listening type of CC1, but the channel detecting of the short listening type of CC1 When the listening (third listening) succeeds, the first uplink information may be sent by the CC1; however, considering that the channel listening failure of the long listening type of the CC1 fails, the CC2 cannot be used to send the uplink information (even if the short listening for the CC2) Type of channel listening succeeded).
  • the specific implementation manner of the indication information will be described in detail from three dimensions: the number of indication information, the bearer information of the indication information, and the indication manner of the indication information.
  • the indication information may be a single indication information or a plurality of indication information from the perspective of the number of indication information.
  • the indication information is a single indication information
  • the indication information is used to indicate that the listening type of the channel sensing performed on the first carrier is a long listening type before sending the first uplink information, and is sent Before the second uplink information, the listening type of the channel sensing performed on the second carrier is a long listening type.
  • the indication information may include first indication information and second indication information.
  • the first indication information is used to indicate that the listening type of the channel sensing performed on the first carrier is a long listening type before the first uplink information is sent.
  • the second indication information is used to indicate that a listening type of channel sensing performed on the second carrier is the short listening type before transmitting the second uplink information. It can be understood that when the number of the first carriers is M, the number of the first indication information may also be M, where each first indication information instructs one channel to perform a channel on the first carrier.
  • the interception type of the interception when the number of the second carriers is N, the number of the second indication information may also be N, wherein each second indication information instructs one in the second one by one The type of listening that performs channel listening on the carrier.
  • the indication information is further used to indicate that the listening type of the channel sensing performed by the third carrier is the short listening type before the third uplink information is sent
  • the indication information is further Includes third indication information.
  • the third indication information is used to indicate that the listening type of the channel sensing performed by the terminal device on the third carrier is the short listening type before transmitting the third uplink information.
  • the terminal is respectively indicated by the indication information of the at least two indication information.
  • the type of interception of the channel sensing performed on the corresponding carrier before the device sends the uplink information on the carrier corresponding to the indication information.
  • the indication information or the first indication information or the second indication information or the third indication information may include at least one of user-specific control information or common control information, from the perspective of the bearer information indicating the information. .
  • the user-specific control information is control information carried in a downlink control channel.
  • the user-specific control information is an uplink grant (UL grant) for scheduling the terminal device to send uplink information, or at least one field of the uplink grant.
  • UL grant uplink grant
  • the user-specific control information may also be other control information carried in the downlink control channel.
  • the user-specific control information is further used to schedule the terminal device to send uplink information on one of the carriers of the carrier set.
  • the user-specific control information in addition to scheduling the terminal device to send the first uplink information, instructs the terminal device to listen to the channel sensing of the first carrier before transmitting the first uplink information.
  • the long-listening type, and/or the user-specific control information in addition to scheduling the terminal device to send the second uplink information, instructing the terminal device to send the second uplink information to the second carrier.
  • the listening type of the channel listening is performed by the short listening type, and/or the user-specific control information notifies the terminal device to send the third uplink information, but also indicates that the terminal device is transmitting the Before the three uplink information, the listening type of the channel sensing performed on the third carrier is the short listening type.
  • the user-specific control information when used to schedule the terminal device to send uplink information, the user-specific control information further includes a frequency domain resource and a modulation and coding scheme (MCS) occupied by the uplink information. And at least one of Demodulation Reference Signal (DMRS) sequence information corresponding to a Physical Uplink Shared Channel (PUSCH) carrying uplink information.
  • MCS modulation and coding scheme
  • the common control information is common control information carried in a downlink control channel.
  • the common control information is at least one of Downlink Control Information (DCI) corresponding to a Physical Downlink Control Channel (CPDCCH) or Downlink Control Information.
  • DCI Downlink Control Information
  • CPDCCH Physical Downlink Control Channel
  • CC-RNTI Cell Common-Radio Network Temporary Identifier
  • the indication information may all be user-specific control information, and may all be common control information, or part of the user-specific control information, and the other part is the public control information, which is not specifically limited in this application.
  • the indication information includes first indication information indicating that the interception type of the terminal device for performing channel interception for the first carrier is a long listening type, and is used for indicating that the terminal device performs channel sensing for the second carrier.
  • the at least two indication information indicates user-specific control information
  • at least one of the indication information is common control information.
  • the uplink grant UL grant or the common physical downlink control channel CPDCCH (or common downlink control information carried in the CPDCCH, Common DCI) included in the indication information is used to indicate that the terminal device is sending the second Before the uplink information, the listening type of the channel sensing performed on the second carrier is the short listening type.
  • the indication information includes the second indication information, where the second indication information is carried in the second UL grant or the second CPDCCH, and the second indication information is used to indicate that the terminal device is sending the second uplink information.
  • the listening type of channel sensing performed on the second carrier is the short listening type.
  • the uplink grant UL grant or the common physical downlink control channel CPDCCH (or the common downlink control information carried in the CPDCCH) included in the indication information is used to indicate that the terminal device sends the first uplink information.
  • the listening type of the channel sensing performed on the first carrier is the long listening type.
  • the indication information includes first indication information, where the first indication information is carried in the first UL grant or the first CPDCCH, and the first indication information is used to indicate that the terminal device is sending the first uplink information.
  • the listening type of channel sensing performed on the first carrier is the long listening type.
  • the uplink grant UL grant or the common physical downlink control channel CPDCCH (or the common downlink control information carried in the CPDCCH) included in the indication information is used to indicate that the terminal device sends the third uplink information.
  • the listening type of the channel sensing performed on the third carrier is the short listening type.
  • the indication information includes the third indication information, where the third indication information is carried in the third UL grant or the third CPDCCH, and the third indication information is used to indicate that the terminal device is sending the third uplink information.
  • the listening type of the channel sensing performed on the third carrier is the short listening type.
  • the type of the interception used by the terminal information to indicate that the terminal device performs channel sensing on the first carrier may be indicated by an explicit manner or an implicit manner, which is described later, where The mode corresponds to the manner indicated by the first UL grant, and the implicit mode corresponds to the manner indicated by the first CPDCCH.
  • the second indication information is used to indicate a listening type of the channel sensing performed by the terminal device on the second carrier, where an explicit manner corresponds to a manner indicated by the second UL grant,
  • the mode is corresponding to the mode indicated by the second CPDCCH;
  • the second indication information is used to indicate a listening type of the channel sensing performed by the terminal device on the second carrier, where the explicit mode corresponds to the The manner in which the second UL grant performs the indication, and the implicit manner corresponds to the manner indicated by the second CPDCCH.
  • the type of the interception of the channel information that is used by the terminal device to indicate that the terminal device performs the first carrier or the second carrier or the third carrier may be explicitly or implicitly described later.
  • the mode indicates that the explicit mode corresponds to the manner indicated by the UL grant, and the implicit mode corresponds to the mode indicated by the CPDCCH.
  • the indication information may be indicated in an explicit manner or an implicit manner from the perspective of the indication manner of the indication information.
  • the first indication information may be a preset bit, a preset character, or a preset field, which is used to indicate a channel listening type, and the like.
  • the listening type is indicated by the 'Channel Access type' field in the first UL grant.
  • the first indication information may be 1 bit carried in the uplink grant, and when the value of the bit is “0”, indicating that the channel listening type of the first carrier is a long listening type; When the value of the bit is “1”, indicating that the channel listening type of the first carrier is a short listening type, or when the value of the bit is "1", indicating channel sensing of the first carrier The type is a long listening type; when the value of the bit is "0”, indicating that the channel listening type of the first carrier is a short listening type.
  • the above manner is also applicable when the indication information or the second indication information indicates the channel listening type of the second carrier, or when the indication information or the third indication information indicates the channel listening type of the third carrier.
  • the second indication information may indicate second time domain resource information, where the time unit of the second uplink information is no later than the end time of the second time domain resource In the unit, the second indication information indicates that the short-listening type channel interception is performed before the terminal device sends the second uplink information, or the terminal device determines to perform short-listening type channel detection before transmitting the second uplink information. .
  • the first indication information may indicate the first time domain resource information, and the time unit where the first uplink information is located is later than the first
  • the first indication information indicates that the terminal device performs channel interception of a long listening type before transmitting the first uplink information, or the terminal device determines to perform long listening before sending the first uplink information. Type of channel listening.
  • the third indication information may indicate third time domain resource information, where the time unit of the third uplink information is no later than The third indication information indicates that the short-listening type channel interception is performed before the terminal device sends the third uplink information, or the terminal device determines to perform the short-detection before transmitting the third uplink information. Listening to the type of channel listening.
  • the first time domain resource information or the second time domain resource information or the third time domain resource information is referred to as a time domain resource, and the time domain resource information may be embodied in any one of the following manners:
  • the time domain resource information includes: an end time of the downlink maximum channel occupation time, or a remaining time length of the downlink maximum channel occupation time.
  • the terminal device can know the end time of the downlink information, so after receiving the time domain resource information of the downlink maximum channel occupation time, the terminal device can be based on the end time of the downlink maximum channel occupation time, or the downlink maximum
  • the remaining time length of the channel occupation time directly determines whether the downlink maximum channel occupation time can be shared.
  • the time domain resource information includes: a start time of the downlink maximum channel occupation time, and a duration of the downlink maximum channel occupation time.
  • the terminal device can know the end time of the downlink information, so after receiving the time domain resource information of the downlink maximum channel occupation time, the terminal device can be based on the start time of the downlink maximum channel occupation time, and the downlink
  • the duration of the maximum channel occupation time determines the end time of the downlink maximum channel occupation time, thereby determining whether the downlink maximum channel occupation time can be shared.
  • the time unit in which the uplink information (the first uplink information or the second uplink information or the third uplink information) to be sent by the terminal device is located is not later than the downlink maximum channel occupation time.
  • the indication information indicates that the terminal device performs channel interception of the short listening type, and the time unit in which the uplink information to be sent by the terminal device is later than the end time of the downlink maximum channel occupation time.
  • the indication information indicates that the terminal device performs channel interception of a long listening type.
  • the time domain resource information includes: (the downlink maximum channel occupation time) the starting time of the scheduled uplink transmission, and (the downlink maximum channel occupation time) is scheduled. The duration of the uplink transmission.
  • the start time (or start time unit) of the uplink transmission may be the start time (or start time unit) of the uplink transmission compared to the end time (or end time) of the downlink transmission carrying the indication information. Unit) or the time offset (or time interval) of the start time (or time unit) of the time unit carrying the indication information, and the end time (or end time unit) of the uplink transmission is the start time of the uplink transmission (or Start time unit) plus the duration of the uplink transmission.
  • the indication information indicates that the terminal device performs channel interception of a short listening type
  • the time unit of the uplink information to be sent by the terminal device is later than the end time unit of the uplink transmission
  • the The indication information indicates that the terminal device performs channel interception of a long listening type.
  • the indication information indicates that the terminal device performs channel sensing of a long listening type before the uplink information to be transmitted on the uplink time unit after n+1+d.
  • the common downlink control channel of the second carrier CC1 is carried on the subframe #n+4, indicating that the time offset of the scheduled uplink transmission is 5 ms, and the duration of the uplink transmission is long.
  • the terminal device can determine that the end time of the downlink maximum channel occupation time is #n+12, so the uplink information on #n+9 ⁇ #n+12 can share the downlink maximum channel occupation time and use short Channel listening of the interception type; the common downlink control channel of the first carrier CC2 is carried on the subframe #n+6, indicating that the time offset of the scheduled uplink transmission is 3 ms, and the uplink transmission is The duration of the duration is 2 ms. Therefore, the terminal device can determine that the end time of the downlink maximum channel occupation time is #n+10, so the uplink information on #n+9 to #n+12 cannot share the downlink maximum channel occupation time, and needs to be used. Channel listening for long listening types.
  • the time unit in which the uplink information is located which is referred to as the first time unit, is included in the downlink maximum channel occupation time, and the end time unit of the first time unit is not later than the downlink maximum channel occupation time or uplink transmission. End time unit.
  • the end time of the downlink maximum channel occupation time is a start time of the downlink maximum channel occupation time plus a duration corresponding to the downlink maximum channel occupation time.
  • the end time of the downlink maximum channel occupation time is a start time of the downlink maximum channel occupation time plus a duration corresponding to the downlink maximum channel occupation time plus a duration of all gaps (Gap).
  • the starting time of the downlink maximum channel occupation time is a time when the network device performs channel interception and starts to send downlink information. Further, after all the gaps are the start time of the downlink maximum channel occupation time, the downlink information is not used by the network device, and the network device is not scheduled to send uplink information (the terminal may be scheduled by the network device)
  • the device may also be not limited to the terminal device but includes a time domain resource or a gap (Gap) of at least one terminal device scheduled by the network device. Further, any one of the gaps is a gap having a duration greater than a first predetermined length, for example, the first preset length is 25 us.
  • the duration of the downlink maximum channel occupation time corresponds to the downlink maximum channel occupation time length corresponding to the channel access priority used by the network device to perform channel interception of the long listening type.
  • the duration of the downlink maximum channel occupation time of the first carrier CC1 is 6 ms
  • the Gap that is not used by the network device to transmit downlink information and is not scheduled by the network device (the terminal device accessing the network device) to send uplink information is 6 ms. Therefore, the end time of the downlink maximum channel occupation time is #n+12, that is, the uplink subframes #n+9 to #n+12 are all in the downlink maximum channel occupation time.
  • the embodiment of the present invention further provides a terminal device (as shown in FIG. 8), which is used to implement the method described in the foregoing embodiment of FIG. 3.
  • the terminal device 70 includes a transmitter 703, a receiver 704, a memory 702, and a processor 701 coupled to the memory 702 (the number of the processors 701 may be one or more, and one processor in FIG. 8) For example).
  • the transmitter 703, the receiver 704, the memory 702, and the processor 701 may be connected by a bus or other means (in FIG. 8 to take a bus connection as an example).
  • the transmitter 703 is for transmitting data to the outside
  • the receiver 704 is for receiving data from the outside.
  • the memory 702 is used to store program code
  • the processor 701 is used to call and run program code stored in the memory 702.
  • the program code stored in the memory 702 is specifically used to implement the functions of the terminal device in the embodiment of FIG. Specifically, the processor 701 is configured to call the program code stored in the memory 702, and perform the following steps:
  • the terminal device receives the indication information sent by the network device by using the transmitter receiver 704, where the indication information is used to indicate that the terminal device listens to channel interception performed by the first sub-band before transmitting the first uplink information.
  • the type of the short-listening type is the long-listening type, and indicates that the listening type of the channel sensing performed by the terminal device on the second sub-band is the short-listening type before transmitting the second uplink information.
  • the terminal device performs first channel interception on the first subband by the processor 701, and performs second channel snooping on the second subband, where the first channel snooping is a short snooping type channel snooping
  • the second channel is listening for channel interception of the long listening type
  • the terminal device passes the transmitter 703 in the first subband Sending the first uplink information.
  • the first preset condition is that the listening result of the first channel listening is channel listening success, and the listening result of the second channel listening is channel listening success.
  • the terminal device sends the second uplink information by using the transmitter 703 on the second sub-band when the interception result of the second channel is that the channel is successfully detected.
  • the uplink grant or the common physical downlink control channel included in the indication information is used to indicate that the terminal device performs channel interception on the second subband before transmitting the second uplink information.
  • the listening type is the short listening type.
  • the terminal device performs third channel interception on the second sub-band by the processor 701, where the third channel is intercepted as channel interception of the short-listening type, where the The three-channel interception is channel interception performed for the second uplink information; when the interception result of the third channel interception is channel interception success, the terminal device passes the transmitter 703 at the second The second uplink information is sent on the subband.
  • the listening result of the second channel listening is a channel listening failure
  • the intercepting result of the third channel listening is that the channel listening is successful
  • the terminal device passes the transmitting The 703 transmits the second uplink information on the second subband.
  • the first uplink information is used by the network device to schedule uplink information sent by the terminal device
  • the second uplink information is used by the network device to schedule uplink information sent by the terminal device, where the first The start time of the uplink information and the start time of the second uplink information are the same.
  • the channel snooping of the long snooping type is a random backoff idle channel evaluation; and the short snooping type channel snooping is a single slot idle channel evaluation.
  • the first subband is a subband of any one of the subband sets indicated by the network device as the long listening type, wherein the first subband and the second subband All belong to the set of sub-bands.
  • the terminal device determines, by the processor 701, the second sub-band is a sub-band that performs the long-listening type channel interception, where the second sub-band is the sub-band in the sub-band A sub-band randomly selected or arbitrarily selected in the set, the first sub-band and the second sub-band each belonging to the sub-band set.
  • the terminal device when the handover listening type condition is met between the first subband and the second subband, performs the first channel sensing on the first subband by using the processor 701, Performing the second channel sensing on the second sub-band; wherein the handover listening type condition includes at least one of: a channel congestion degree of the first sub-band is greater than a channel of the second sub-band The degree of congestion; and the degree of channel fading of the first sub-band is greater than the degree of channel fading of the second sub-band.
  • the indication information is further used to indicate that the listening type of the channel sensing performed by the terminal device on the third sub-band is the short-listening type before transmitting the third uplink information; Performing fourth channel interception on the third sub-band by the processor 701, where the fourth channel snooping is channel snooping of the short snooping type;
  • the interception result of the fourth channel listening is that the channel listening is successful
  • the listening result of the second channel listening is that the channel listening is successful
  • the terminal device passes the transmitter 703 at the The third uplink information is sent on the three sub-bands.
  • an embodiment of the present invention further provides an information transmitting apparatus (as shown in FIG. 9), which is used to implement the method described in the foregoing FIG.
  • the information transmitting apparatus 80 includes a receiving module 810, a listening module 820, and a transmitting module 830.
  • the receiving module 810 and the sending module 830 may be two modules that are separately set.
  • the receiving module 810 may be a separately set receiver, and the sending module 830 may be an independently set transmitter.
  • the receiving module 810 and the transmitting module 830 may also be modules of integrated settings, such as transceivers and the like.
  • the transceiver can be a radio frequency transceiver or the like.
  • the receiving module 810 is configured to receive indication information that is sent by the network device, where the indication information is used to indicate a listening type of channel sensing performed by the terminal device on the first sub-band before transmitting the first uplink information.
  • the listening type of the channel sensing performed on the second sub-band is the short listening type.
  • the listening module 820 is configured to perform a first channel interception on the first subband, and perform a second channel snooping on the second subband, where the first channel is intercepted as a short listening type channel. Listening, the second channel is listening for channel interception of the long listening type.
  • the sending module 830 is configured to send the first sub-band on the first sub-band when the interception result of the first channel listening and the listening result of the second channel listening satisfy the first preset condition
  • the first uplink information is described.
  • the embodiment of the present application further provides a communication system, where the communication system includes: a network device and a terminal device.
  • the terminal device corresponds to the terminal device in the method embodiment of FIG.
  • embodiments of the present invention can be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware. Moreover, the present invention can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage and optical storage, etc.) including computer usable program code.
  • the computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device.
  • the apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.
  • These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device.
  • the instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

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Abstract

本申请实施例提供了一种信息发送方法以及装置。其中，所述方法包括：终端设备接收网络设备发送的指示信息，其中，指示信息用于指示终端设备在发送第一上行信息之前，对第一子带进行的信道侦听的侦听类型为长侦听类型，且指示终端设备在发送第二上行信息之前，对第二子带进行的信道侦听的侦听类型为短侦听类型；终端设备对第一子带执行第一信道侦听，对第二子带执行第二信道侦听，其中，第一信道侦听为短侦听类型的信道侦听，第二信道侦听为长侦听类型的信道侦听；在第一信道侦听的侦听结果以及对第二信道侦听的侦听结果满足第一预设条件时，终端设备在所述第一子带上发送第一上行信息。

Description

信息发送方法以及相关设备
本申请要求于2017年08月11日提交中国专利局、申请号为201710690657.9、申请名称为《信息发送方法以及相关设备》的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本发明涉及通信领域，尤其涉及一种信息发送方法以及相关设备。
背景技术
先听后发(Listen-Before-Talk，LBT)技术是非授权频段(Unlicensed Frequency Bands，UFB)接入技术中的重要一环。LBT技术就是：在进行数据传输之前，终端设备必须先对载波进行信道侦听以确定是否有其他的设备正在占用载波进行数据传输。如果终端设备对载波的侦听成功，则终端设备可以抢占载波进行数据传输，如果终端设备对载波的侦听不成功，终端设备不可以抢占载波进行数据传输。在占用载波后，终端设备可以在最大信道占用时间(Maximum Channel Occupancy Time，MCOT)内持续发送信息。在超过最大信道占用时间之后，终端设备需要主动释放载波以提供给其他设备进行使用。释放信道之后，终端设备需要重新执行LBT才能再次接入载波。LBT技术能够保证共享非授权频段的多个设备之间能够友好共存，减少多个设备之间因为抢占非授权频段的频谱资源而发生冲突的概率。
但是，现时的LBT技术的侦听效率并不高，特别是在通信系统比较繁忙时，大量的设备对信道进行抢占，设备之间发生冲突的概率会大大增加，导致终端设备的侦听效率进一步降低，终端设备需要较长时间才能接入信道以进行数据传输。
发明内容
本申请实施例提供了一种信息发送以及相关设备，能够有效地提高载波的侦听效率。
第一方面，提供了一种信息发送方法，包括：
终端设备接收网络设备发送的指示信息，其中，所述指示信息用于指示所述终端设备在发送第一上行信息之前，对第一子带进行的信道侦听的侦听类型为长侦听类型，且指示所述终端设备在发送所述第二上行信息之前，对所述第二子带进行的信道侦听的侦听类型为短侦听类型，所述第一信道侦听为针对所述第一上行信息执行的信道侦听，所述第二信道侦听为针对第二上行信息执行的信道侦听；
终端设备对所述第一子带执行第一信道侦听，对第二子带执行第二信道侦听，其中，所述第一信道侦听为所述短侦听类型的信道侦听，所述第二信道侦听为所述长侦听类型的信道侦听；
在所述第一信道侦听的侦听结果以及对所述第二信道侦听的侦听结果满足第一预设条件时，所述终端设备在所述第一子带上发送所述第一上行信息。
结合第一方面，在一些可能的实施方式中，所述第一预设条件为所述第一信道侦听的 侦听结果为信道侦听成功，并且，所述第二信道侦听的侦听结果为信道侦听成功。
结合第一方面，在一些可能的实施方式中，在所述第二信道侦听的侦听结果为信道侦听成功时，所述终端设备在所述第二子带上发送所述第二上行信息。
结合第一方面，在一些可能的实施方式中，所述指示信息所包括的上行授权或公共物理下行控制信道用于指示所述终端设备在发送所述第一上行信息之前，对所述第一子带进行的信道侦听的侦听类型为所述长侦听类型。
结合第一方面，在一些可能的实施方式中，所述指示信息所包括的上行授权或公共物理下行控制信道用于指示所述终端设备在发送所述第二上行信息之前，对所述第二子带进行的信道侦听的侦听类型为所述短侦听类型。
结合第一方面，在一些可能的实施方式中，所述指示信息所包括的上行授权或公共物理下行控制信道用于指示所述终端设备在发送所述第三上行信息之前，对所述第三子带进行的信道侦听的侦听类型为所述短侦听类型。
结合第一方面，在一些可能的实施方式中，所述终端设备对所述第二子带执行第三信道侦听，其中，所述第三信道侦听为所述短侦听类型的信道侦听，所述第三信道侦听为针对所述第二上行信息执行的信道侦听；在所述第三信道侦听的侦听结果为信道侦听成功时，所述终端设备在所述第二子带上发送所述第二上行信息。
具体地，在所述第二信道侦听的侦听结果为信道侦听失败，并且，所述第三信道侦听的侦听结果为信道侦听成功时，所述终端设备在所述第二子带上发送所述第二上行信息。
进一步地，在所述第二信道侦听的侦听结果为信道侦听失败，并且，所述第三信道侦听的侦听结果为信道侦听成功时，所述终端设备放弃在所述第一子带上发送所述第一上行信息。
结合第一方面，在一些可能的实施方式中，所述第一上行信息为所述网络设备调度所述终端设备发送的上行信息，所述第二上行信息为所述网络设备调度所述终端设备发送的上行信息，所述第一上行信息的起始时刻和所述第二上行信息的起始时刻是相同的。
结合第一方面，在一些可能的实施方式中，所述长侦听类型的信道侦听为随机回退空闲信道评测；所述短侦听类型的信道侦听为单时隙空闲信道评测。
结合第一方面，在一些可能的实施方式中，所述第一子带为子带集合中任意一个侦听类型被网络设备指示为所述长侦听类型的子带，其中，所述第一子带和所述第二子带均属于所述子带集合。
结合第一方面，在一些可能的实施方式中，所述终端设备确定所述第二子带为执行所述长侦听类型信道侦听的子带，其中，所述第二子带为所述终端设备在子带集合中随机选择或任意选择的子带，所述第一子带和所述第二子带均属于所述子带集合。
结合第一方面，在一些可能的实施方式中，当所述第一子带和所述第二子带之间满足切换侦听类型条件时，终端设备对所述第一子带执行所述第一信道侦听，对所述第二子带执行所述第二信道侦听；其中，
所述切换侦听类型条件包括以下至少一种：所述第一子带的信道拥塞程度大于所述第二子带的信道拥塞程度；以及，所述第一子带的信道衰落程度大于所述第二子带的信道衰落程度。
结合第一方面，在一些可能的实施方式中，所述指示信息还用于指示所述终端设备在发送第三上行信息之前，对第三子带进行的信道侦听的侦听类型为所述短侦听类型；
所述终端设备对所述第三子带执行第四信道侦听，其中，所述第四信道侦听为所述短侦听类型的信道侦听；
在所述第四信道侦听的侦听结果为信道侦听成功，并且，所述第二信道侦听的侦听结果为信道侦听成功时，所述终端设备在所述第三子带上发送所述第三上行信息。
第二方面，提供了一种信息发送装置，包括用于执行第一方面任意一项所述的方法的单元。
第三方面，提供了一种终端设备，存储器以及与所述存储器耦合的处理器、通信模块，其中：所述通信模块用于发送或者接收外部发送的数据，所述存储器用于存储如第一方面任意一项所描述的方法的实现代码，所述处理器用于执行所述存储器中存储的程序代码，即执行如第一方面任意一项描述的方法。
第四方面，提供了一种计算机可读存储介质，所述计算机可读存储介质存储有计算机程序，所述计算机程序被处理器执行时实现如第一方面任意一项所述的方法。
第五方面，提供了一种通讯系统，包括网络设备以及终端设备，其中，所述网络设备与所述终端设备之间能够进行通讯，所述终端设备为如第一方面任意一项所述的终端设备。
附图说明
为了更清楚地说明本发明实施例或背景技术中的技术方案，下面将对本发明实施例或背景技术中所需要使用的附图进行说明。
图1是现有技术提供的一种多载波信道侦听的示意图；
图2是现有技术提供的另一种多载波信道侦听的示意图；
图3是本申请实施例提供的一种信息发送方法的交互图；
图4是本申请实施例提供的一种多载波信道侦听的示意图；
图5A-5B分别是切换前以及切换后的多载波信道侦听的示意图；
图6是本申请实施例提供的另一种多载波信道侦听的示意图；
图7是本申请实施例提供的一种通过隐式方式指示载波的侦听方式的示意图；
图8是本申请实施例提供的一种终端设备的结构示意图；
图9是本申请实施例提供的一种信息发送装置的结构示意图。
具体实施方式
为了便于理解本发明实施例，首先介绍本发明实施例涉及的信道侦听的侦听类型。在申请实施例中，信道侦听的侦听类型可以包括：长侦听类型的信道侦听以及短侦听类型的信道侦听。
长侦听类型的信道侦听通常是指从开始进行信道侦听至信道侦听成功耗时较长的信道侦听。在一具体的实施例中，长侦听类型的信道侦听可以是随机回退(Random Backoff)空闲信道评测(CCA，Clear Channel Assessment)。随机回退空闲信道评测的原理为：终端 设备在0～初始竞争窗口(CWS)之间均匀随机生成一个回退计数器N，并且以侦听时隙(例如时长为9us)为粒度对载波进行信道侦听，如果侦听时隙内检测到信道空闲，则将回退计数器减一，反之，如果侦听时隙内检测到信道忙碌，则将回退计数器挂起，即，回退计数器N在信道忙碌时间内保持不变，直到检测到信道空闲时，才重新对回退计数器进行计数。当回退计数器归零时，则认为信道侦听成功，终端设备可以立即占用该信道发送上行信息。另外，终端设备也可以在回退计数器归零后，不立即发送上行信息而自行等待一段时间，等待结束后，在需要发送上行信息的时刻之前再在一个额外的时隙侦听一次，若该额外的时隙内侦听到信道空闲则认为信道侦听成功，可以立即发送信息。若在该上行信息之前未完成回退计数器归零，或者该额外的侦听时隙为忙碌，则称信道侦听失败。可以理解，上述的例子只是作为一种举例，在其他的实施方式中，长侦听类型的信道侦听还可以是其他耗时较长的信道侦听，此处不作具体限定。
短侦听类型的信道侦听通常是指从开始进行信道侦听至信道侦听成功耗时较短的信道侦听。在一具体的实施例中，短侦听类型的信道侦听可以是单时隙空闲信道评测或者称之为单次(One shot)空闲信道评测。单时隙空闲信道评测的原理为：终端设备执行一次长度为预设时间长度(例如预设时间长度为25us)的单时隙的信道侦听，如果终端设备在该单时隙内检测到信道空闲，则认为信道侦听成功，终端设备可以立即接入信道发送上行信息；如果检测到信道忙碌，终端设备放弃发送上行信息，称信道侦听失败。可以理解，不限于上述空闲信道评测方式，短侦听类型的信道侦听还可以是其他能够快速对载波进行侦听的信道侦听，这里不做限制。并且，信道侦听的侦听时长也不限于为25us，也可以是更多或者更少的时长；信道侦听的次数也不限于为1次，也可以是2次，3次或者更多，此处不作具体限定。
在本申请实施例中，信道状态包括两种：信道空闲、信道忙碌。信道状态的判断准则为：终端设备将侦听时隙内的接收到载波上的功率与能量检测门限(CCA-ED，CCA-Energy Detection)比较，如果高于能量检测门限，则信道状态为信道忙碌，如果低于能量检测门限，则信道状态为信道空闲。
不难理解，长侦听类型的信道侦听需要在多个侦听时隙的信道侦听结果均为信道空闲时，信道侦听才会被认为是成功，而短侦听类型的信道侦听只要在单时隙的信道侦听结果为信道空闲时，信道侦听就能被认为是成功，所以，长侦听类型的信道侦听的侦听结果的可靠性大于短侦听类型的信道侦听的侦听结果的可靠性，但是，长侦听类型的信道侦听的侦听成功率小于短侦听类型的信道侦听的侦听成功率。
在终端设备利用载波向网络设备发送上行信息之前，终端设备可能采用长侦听类型的信道侦听对载波进行信道侦听，也可能采用短侦听类型的信道侦听对载波进行信道侦听。下面将详细介绍终端设备采用不同类型的信道侦听对载波进行侦听的原因。终端设备在利用载波向网络设备发送上行信息之前，一般需要对载波执行长侦听类型的信道侦听，以确保侦听结果的可靠性。但是，在特殊的情况下，终端设备也可以在利用载波向网络设备发送上行信息之前，执行短侦听类型的信道侦听。例如，如果网络设备在抢占载波之后发送的下行信息未占满最大信道占用时间，则网络设备可以不释放信道，而是将剩余的最大信 道占用时间提供给终端设备发送上行信息，以提高终端设备接入载波的机会。例如，最大信道占用时间为8毫秒，网络设备发送下行信息占用的时间为2毫秒，则网络设备可以将剩余的6毫秒共享给终端设备使用，即指示终端设备在剩余的6毫秒上发送上行信息之前可以使用短侦听类型的信道侦听以接入信道。对于终端设备来说，网络设备在抢占载波之前已经执行过了可靠性较高的长侦听类型的信道侦听，故此，终端设备需要发送的上行信息在共享网络设备提供的剩余的最大信道占用时间内时，只需要执行简单的短侦听类型的信道侦听即可占用载波向网络设备发送上行信息。而对于超出网络设备提供的剩余的最大信道占用时间的上行信息，终端设备则必需要执行长侦听类型的信道侦听以保证与周围其他无线节点在非授权频谱上的公平共存。
为了扩展可使用带宽，第四代移动通讯技术(the 4Generation mobile communication technology，4G)引入了增强授权辅助接入(eLAA，enhanced LAA)(Licensed-Assisted Access using Long Term Evolution，LAA-LTE)技术。终端设备通过载波聚合(Carrier Aggregation，CA)技术，将可用的频谱从授权频段扩展至非授权频段以向网络设备发送上行信息，从而提升上行信息的传输速度。在本申请实施例中，可以以子带为单位进行上行信息传输。其中，所述子带(例如，第一子带或者第二子带或者第三子带)为用于承载上行信息的一段频域资源。可选的，所述子带包括至少一个子载波，或者，所述子带包括至少一个物理资源块(PRB)。可选的，所述子带为对应5MHz或10MHz或20MHz带宽的频带，例如，该段频带对应LTE系统中的一个载波所占的频域范围。可选的，所述子带为一个载波(例如，第一子带为第一载波，第二子带为第二载波，第三子带为第三载波)。应理解，所述子带也可以称之为带宽切片(BandWidth Part，BWP)。可选的，所述子带为该终端设备执行信道侦听的频域单元，例如，终端设备在执行LBT时，使用所述子带上的侦听时隙内检测到的功率与所述子带所对应的CCA-ED进行对比以判断信道为忙碌或空闲；再例如，该终端设备针对所述子带执行LBT成功后才能占用所述子带发送上行信息(例如，第一上行信息或第二上行信息或第三上行信息)。为了陈述方便，下面均以所述子带包括一个子载波为例进行描述，例如，第一子带称为第一载波，第二子带称为第二载波，第三子带称为第三载波，子带集合称为载波集合。
如图1所示，终端设备在第一载波CC1以及第二载波CC2两个非授权频段的载波进行载波聚合以发送上行信息。其中，对于第一载波CC1，网络设备在抢占载波第一载波CC1之后发送的下行信息未占满下行最大信道占用时间，但是，终端设备准备发行的上行信息的时长大于剩余的下行最大信道占用时间，终端设备不可以使用网络设备共享的剩余的下行最大信道占用时间发送上行信息，因此，终端设备必须对第一载波CC1执行长侦听类型的信道侦听；对于第二载波CC2，网络设备在抢占第二载波CC2之后发送的下行信息占满了最大信道占用时间，网络设备没有剩余的最大信道占用时间共享给终端设备发送上行信息，因此，终端设备需要对第二载波CC2执行长侦听类型的信道侦听。终端设备只有在对第一载波CC1以及第二载波CC2的信道侦听均成功时，才能成功进行载波聚合以发送上行信息。
在本申请实施例中，最大信道占用时间可以是根据终端设备的信道接入优先级(Priority  Class)而确定的。当终端设备的信道接入优先级越高，则终端设备越容易成功抢占载波进行数据传输，但是，终端设备的最大信道占用时间越短，反之，当终端设备的信道接入优先级越低，则终端设备越难以成功抢占载波进行数据传输，但是，终端设备的最大信道占用时间越长。
现有技术提出了一种信息发送方法，如图2所示，针对于图1所示的场景，终端设备在进行多载波聚合时，可以执行多载波信道侦听，只需要对第一载波CC1执行长侦听类型的信道侦听，对第二载波CC2执行拉齐的短侦听类型的信道侦听即可。即，终端设备将第二载波CC2从长侦听类型的信道侦听转变为短侦听类型的信道侦听，以提高终端设备的侦听成功率。如果终端设备对第一载波CC1以及第二载波CC2的信道侦听均成功，终端设备就可以在第一载波CC1和第二载波CC2上向网络设备发送上行信息。
但是，如果第二载波CC2的信道比较空闲，但是，第一载波CC1的信道比较拥塞的情况下，则终端设备的信道侦听效率同样不高。
为了解决现有技术的问题，本申请提出了一种信息发送方法以及相关设备，能够有效地提高终端设备的侦听效率。下面将分别进行详细的介绍。
图3是本申请实施例提供的一种信息发送方法的交互图。图3所示，本申请实施例的信息发送方法包括如下步骤：
S101：网络设备向终端设备发送指示信息。相应地，终端设备接收网络设备发送的指示信息。
在本申请实施例中，网络设备主要是指连接接入网与核心网之间的中转设备，即，网络设备将从接入网接收到的上行信息发送至核心网，以及，将从核心网接收到的下行消息发送至接入网。网络设备通常可以包括：宏基站(Macro eNodeB/NodeB)、微基站(micro eNodeB/NodeB)、微微基站、家庭基站(home eNodeB/NodeB)、分布式基站、远端射频头以及中继(Relay)等等，此处不作具体限定。
在本申请实施例中，终端设备为逻辑实体，具体可以是用户设备(User Equipment)以及物联网(Internet of Things，IoT)设备等等中的任意一种。其中，用户设备可以是智能手机(smart phone)、智能手表(smart watch)，智能平板等等，物联网设备可以是可穿戴设备(Wearable Device，WD)，仪表以及环境监控设备等等，此处不作具体限定。
在本申请实施例中，所述终端设备可以通过频分多址接入(frequency division multiple access，FDMA)技术接入到所述网络设备。所述频分多址接入技术包括：单载波频分多址(Single-carrier Frequency-Division Multiple Access，SC-FDMA)、正交频分多址(Orthogonal Frequency Division Multiple Access，OFDMA)或者其他的频分多址接入技术，此处不作具体的限定。
在本申请实施例中，所述指示信息可以用于指示所述终端设备在发送第一上行信息之前，对第一载波进行的信道侦听的侦听类型为长侦听类型，以及，指示所述终端设备在发送所述第二上行信息之前，对所述第二载波上进行的信道侦听的侦听类型为所述短侦听类型。
S102：终端设备对所述第一载波执行第一信道侦听，对第二载波执行第二信道侦听，其中，所述第一信道侦听为短侦听类型的信道侦听，所述第二信道侦听为所述长侦听类型的信道侦听。也可以理解为，所述第一信道侦听为针对第一上行信息执行的信道侦听，所述第二信道侦听为针对第二上行信息执行的信道侦听。
在本申请实施例中，所述第一载波以及所述第二载波均属于所述载波集合。其中，所述载波集合为所述终端设备进行载波聚合时所使用的载波的集合。应理解，所述载波集合还可以包括所述第一载波以及所述第二载波外，还可以包括其他载波，例如，第三载波等等。应理解，所述载波集合具体包含哪些载波可以由终端设备自行决定，本实施例不做限定。例如图4所示，所述载波集合包括4个载波，其中CC1为第二载波，被网络设备指示使用短侦听类型的信道侦听且实际执行长侦听类型的信道侦听，CC2为第一载波，被网络设备指示使用长侦听类型的信道侦听且实际执行短侦听类型的信道侦听，所述载波集合还包括被网络设备指示使用长侦听类型的信道侦听的CC3以及被网络设备指示使用短侦听类型的信道侦听的CC4(称之为第三载波)。本实施例以载波集合包括第一载波和第二载波为例进行说明，并且在本实施例的某些实施方法中，载波集合还包含第三载波。但是，在其他的实施例中，第一载波也可以替换为第一子带，第二载波也可以替换为第二子带，第三载波也可以替换为第三子带，此时，载波集合也可以被称为子带集合。并且，载波集合中载波的数量也可以是其他，例如，载波集合也可以只包括第一载波以及第二载波，或者，载波集合还可以包括第四载波、第五载波或者更多。
进一步的，所述载波集合为所述终端设备进行多载波信道侦听时所使用的载波的集合。多载波侦听时，终端设备对该载波集合中的其中一个载波执行长侦听类型的信道侦听，对其他载波执行短侦听类型的信道侦听，当长侦听类型的载波的信道侦听成功，且短侦听类型的载波的信道侦听成功时，则终端设备可以占用短侦听类型的载波发送上行信息。
可选的，所述第二载波为所述终端设备在载波集合中随机选择的载波，即，所述第二载波可以是载波集合中任意一个侦听类型被网络设备指示为所述长侦听类型的载波，也可以是载波集合中任意一个侦听类型被网络设备指示为所述短侦听类型的载波。终端设备在载波集合中通过均匀随机的方式选择一个用于执行所述长侦听类型的载波，此时该被选择执行所述长侦听类型信道侦听的载波恰好为第二载波。当然终端设备通过这种均匀随机选择的方式也有可能选择到一个被指示为执行长侦听类型信道侦听的载波，但本实施例仅针对恰好选择为第二载波的情况进行说明。
可选的，所述第二载波为所述终端设备在载波集合中任意选择的载波。也就是说，终端设备将载波集合中的哪个载波作为第二载波以执行所述长侦听类型的信道侦听，是终端设备通过具体实现算法在载波集合中任意选择的，例如，可以选择载波集合中拥塞程度较小的载波，或者信道衰落程度较小的载波，本实施例不做限制。
终端设备选择载波集合中的第二载波执行长侦听类型的信道侦听后，终端设备对该第二载波执行所述长侦听类型的信道侦听，即第二信道侦听，并针对载波集合中的第一载波执行所述短侦听类型的信道侦听，即第一信道侦听。
在本申请实施例中，第一载波、第二载波以及第三载波均为非授权频段中的载波。其 中，非授权频段包括可用的非授权频段和非可用的授权频段。这里，非授权频段主要是指可用的非授权频段。可用的非授权频段包括：2.3GHz频段(欧洲)、3.5GHz频段(美国)、2.4GHz频段/5GHz频段/60GHz频段(全球)等等。可以理解，可用的非授权频段并非绝对不变的，随着社会和技术的发展，可用的非授权频段也可能因为重新规划而发生变化，上述可用的非授权频段的例子只是作为一种举例，而非具体限定。
在本申请实施例中，为了避免载波之间互相干扰，载波之间的保护间隔通常设置为15KHZ，但是，随着抗频偏能力的提高，载波之间的保护间隔可以做得越来越小，以提高频谱的利用效率，上述载波之间的保护间隔的例子只是作为一种举例，而非具体限定。
在本申请实施例中，所述第一上行信息为所述网络设备调度所述终端设备在所述第一载波上发送的上行信息，所述第二上行信息为所述网络设备调度所述终端设备在所述第二载波上发送的上行信息。其中，所述第一上行信息的起始时刻以及所述第二上行信息的起始时刻是相同的。也就是说，当对第一载波以及第二载波的信道侦听成功时，终端设备开始在各自载波的同一时刻发送上行信息。可以理解，终端设备的发送滤波器和接收滤波器均为非理想滤波，若终端设备在同一个时间单元里，在一个载波上发送信息，且在另一个载波上执行侦听，则发送信息的载波上的信息会泄露到执行信道侦听的载波上，导致执行信道侦听的载波无法侦听成功。因此只有当第一上行信息和第二上行信息起始时刻相同时，不会出现不同载波在同一时间分别执行信息发送和信道侦听，终端设备才能同时在第一载波和第二载波上侦听成功并同时开始发送信息。例如，第一上行信息的起始时刻和所述第二上行信息的起始时刻都是上行子帧的起始边界(Subframe boundary)、上行符号的起始边界或者上行符号的中间时刻等等。其中，上行符号的中间时刻可以是上行符号起始边界之后25us处，或上行符号起始边界之后25us+TA(Timing Advance)处等等。可以理解，上述上行符号的中间时刻不限于上述举例，此处不作具体限定。
可选的，所述第一上行信息为所述终端设备在所述第一载波上发送的免调度许可上行传输。应理解，对于基于免调度许可上行传输，终端设备的上行信息不需要由网络设备调度，而是由终端设备自主决定发送。这种不需要调度的传输方式可以称为免调度许可上行(Grant free UpLink或Grant less Uplink，GUL)传输方式，或者称为自主上行(Autonomous UL，AUL)传输方式。区别于基于网络设备调度的上行传输(Schedule based Uplink，SUL)中网络设备通过发送动态的上行授权调度终端设备发送上行信息，用于的GUL传输的GUL无线资源，包括时域和或频域资源，由网络设备半静态配置给终端设备。具体的说，该GUL无线资源通过RRC信令和或动态DCI信令配置给终端设备。具体地说，该GUL时域资源是周期性的，或者说，该GUL时域资源是持续性的时域资源，而基于上行授权调度的上行信息仅针对有限个数的时间单元生效。具体地说，该终端设备在会以GUL方式发送上行信息时会上报免调度许可上行控制信息(Grant free UpLink Control Information，G-UCI)，该G-UCI为该上行数据所对应的控制信息。该G-UCI包括与该上行信息对应的HARQ进程的HARQ进程号信息、新数据指示(New Data Indicator，NDI)信息、与该上行信息对应的冗余版本(Redundancy Version，RV)信息以及该终端设备的用户标识(记为UE ID)信息中的至少一种信息。类似于第一上行信息和第二上行信息都是所述网络设备调度所述终端设备在所述第一载波上发送的信息的情况，当第一上行信息所述终端设备在所述第一载波 上发送的免调度许可上行传输时，第一上行信息和第二上行信息的起始时刻相同，其中，第二上行信息可以是免调度许可上行传输，也可以是网络设备调度终端设备发送的上行传输。
应理解，当所述第一上行信息为所述终端设备在所述第一载波上发送的免调度许可上行信息时，终端设备不需要接收网络设备发送的用于指示在第一载波上进行信道侦听的侦听类型的指示信息，或者说网络设备不需要向终端设备发送用于指示在第一载波上进行信道侦听的侦听类型的指示信息，而是可以通过预设的准则确定在第一载波上进行信道侦听的侦听类型为长侦听类型。例如，终端设备以免调度许可方式发送第一上行信息之前，默认规则是使用长侦听类型进行信道侦听。应理解，预设的准则可以是协议或法规所规定的。
可选的，所述第二上行信息为所述终端设备在所述第一载波上发送的免调度许可上行传输。类似的，所述第一上行信息和所述第二上行信息的起始时刻相同，其中，所述第一上行信息可以是免调度许可上行传输，也可以是网络设备调度终端设备发送的上行传输。
在本申请实施例中，所述第一上行信息可以包括该上行数据信息，导频信息以及上行控制信息中的至少一种。其中，所述第一上行信息可以承载在上行业务信道(Physical Uplink Shared Channel，PUSCH)中，也可以承载在上行控制信道(Physical Uplink Control Channel，PUCCH)中。进一步的，所述第一上行信息为所述网络设备通过上行授权调度的上行信息。所述第二上行信息也同样如此。
应理解，该终端设备在针对某一载波执行的信道侦听成功后，立即占用信道发送上行信息；或者说，该上行信息的起始时刻等于该信道侦听的结束时刻。也就是说，当该终端设备在该载波上使用单时隙CCA进行信道侦听时，侦听时隙之后紧跟该上行信息。当该终端设备在该第二载波上使用随机回退CCA进行信道侦听时，最后一个侦听时隙(回退计数器归零的时隙，或者回退计数器归零后额外的时隙)之后紧跟该上行信息。其中，该载波可以是第一载波或者第二载波或者第三载波；该上行信息可以是第一上行信息或者第二上行信息或者第三上行信息。
S103：终端设备根据对第一载波以及第二载波侦听结果选择第一载波以及第二载波进行上行信息的传输。在上述方法中，当第一载波被网络设备指定为长侦听类型的信道侦听，第二载波被网络设备指定为短侦听类型的信道侦听时，终端设备可以通过随机选择载波或者根据第一载波以及第二载波的信道实际情况，对第一载波执行短侦听类型的信道侦听，对第二载波执行长侦听类型的信道侦听，从而有效地提高终端设备进行信道侦听时的成功率。例如，当第一载波比较拥塞，第二载波比较空闲时，通过随机选择(例如，将第二载波加入到执行多载波侦听的载波集合中随机选择执行长侦听类型信道侦听的载波，则有可能选择到该空闲的第二载波执行长侦听类型信道侦听)或者任意选择的方式，对第一载波执行短侦听类型的信道侦听，对第二载波执行长侦听类型的信道侦听，以提高侦听的成功率。
如图5A所示，网络设备向终端设备发送的指示信息用于指示对第一载波CC1进行的信道侦听的侦听类型为长侦听类型，指示第二载波CC2进行的信道侦听的侦听类型为短侦听类型。在所述第一载波和所述第二载波之间满足切换侦听类型条件时，如图5B所示，对应 于图5A，终端设备确定对第一载波CC1执行对短侦听类型的信道侦听，对第二载波CC2执行长侦听类型的信道侦听。终端设备可以根据对第一载波CC1以及第二载波CC2的侦听结果选择第一载波CC1以及第二载波CC2进行上行信息的传输。其中，所述切换侦听类型条件包括以下至少一种：所述第一载波CC1的信道拥塞程度大于所述第二载波CC2的信道拥塞程度；以及，所述第一载波CC1的信道衰落程度大于所述第二载波CC2的信道衰落程度。
在实际应用中，如果终端设备对第一载波CC1进行短侦听类型的信道侦听以及对第二载波CC2进行长侦听类型的信道侦听的侦听结果均为信道侦听成功，则终端设备可以在所述第一载波上发送所述第一上行信息，和/或，在所述第二载波上发送所述第二上行信息。
在实际应用中，如果终端设备对第一载波CC1进行短侦听类型的信道侦听的侦听结果为信道侦听失败，对第二载波CC2进行长侦听类型的信道侦听的侦听结果为信道侦听成功，则终端设备可以在所述第二载波上发送所述第二上行消息。
应理解，终端设备对于一个包括第一载波和第二载波的载波集合中执行的多载波信道侦听，对于执行短侦听类型的第一信道侦听的第一载波，终端设备要在该第一载波上发送第一上行信息，除了需要满足第一信道侦听成功，而且还额外需要满足在第二载波上执行长侦听类型的第二信道侦听成功；如果该第二载波上的第二信道侦听失败，即使该终端设备在该第一载波上侦听到空闲，也不能发送该第一上行信息。同理，后面所提到的终端设备针对包括第三载波在内的多载波信道侦听也是如此，其中对第三载波的操作类似于第一载波。
当终端设备确定在第二载波执行长侦听类型的信道侦听之后，对于如何在载波集合中选择用于执行短侦听类型信道侦听的第一载波，可以包括以下两种方式。
可选的，在第一种方式中，终端设备对该第二载波执行所述长侦听类型的信道侦听，并针对该载波集合中的所有其他载波执行所述短侦听类型的信道侦听，或者说，针对该载波集合中的任意一个(或者说每一个)其他载波所执行的信道侦听类型都执行所述短侦听类型的信道侦听，此时可以称第一载波为载波集合中任意一个与所述第二载波不同的载波。也就是说，除了第一载波使用长侦听类型进行信道侦听外，载波集合中其他载波(不论被网络设备指示为使用何种侦听类型进行信道侦听)都转换为短侦听类型执行信道侦听。
也就是说，第一载波可以是被网络设备指示在发送第一上行信息之前，对第一载波进行的信道侦听类型为长侦听类型的载波，也可以是被网络设备指示在发送第一上行信息之前，对第一载波进行的信道侦听类型为短侦听类型的载波。
应理解，当第一载波是被网络设备指示在发送第一上行信息之前，对第一载波进行的信道侦听类型为短侦听类型的载波时，所述终端设备对所述第一载波执行所述短侦听类型的信道侦听，且对第二载波执行长侦听类型信道侦听的第二信道侦听，在所述第一载波上所述短侦听类型的信道侦听的侦听结果为信道侦听成功，并且，所述第二信道侦听的侦听结果为信道侦听成功时，所述终端设备在所述第一载波上发送所述第一上行信息。由于在一个执行多载波信道侦听的载波集合中，终端设备对其中任意一个实际执行短侦听类型信道侦听的载波(不论该载波被指示为长侦听类型还是短侦听类型)，其侦听成功的条件都是实际执行长侦听类型信道侦听的载波(第二载波)的信道侦听成功，且该载波的短侦听类型的信道侦听成功，因此受限于这种侦听方式，即使第一载波被指示为短侦听类型，也要 额外满足第二载波的第二信道侦听成功才能发送第三上行信息。例如，如图4所示，载波集合包括{CC1，CC2，CC3，CC4}，第一载波为CC4，第二载波为CC1，指示信息指示终端设备对CC4执行短侦听类型的信道侦听，对CC1也执行短侦听类型的信道侦听。由于载波集合中还包括CC2、CC3，终端设备实际执行的多载波侦听中，将CC1执行长侦听类型的信道侦听，对CC2、CC3、CC4执行短侦听类型的信道侦听，此时由于第一载波CC4和第二载波CC1在同一载波集合中，因此当终端设备对CC1的侦听结果为侦听成功，且对CC4的侦听结果为侦听成功时，终端设备才能在CC4上发送第一上行信息；如果终端设备对CC1的侦听结果为侦听失败，则不能占用CC4发送第一上行信息(不论CC4是否侦听成功)。
可选的，在第二种方式中，终端设备对该第二载波执行所述长侦听类型的信道侦听，并针对该载波集合中的所有其他被网络设备指示为执行所述长侦听类型信道侦听的载波执行所述短侦听类型的信道侦听，或者说，针对该载波集合中的任意一个(或者说每一个)被网络设备指示为执行所述长侦听类型信道侦听的载波所执行的信道侦听类型都执行所述短侦听类型的信道侦听，此时可以称所述第一载波为载波集合中任意一个侦听类型被网络设备指示为所述长侦听类型的载波。也就是说，除了第一载波使用长侦听类型进行信道侦听外，载波集合中其他所有原来被指示为长侦听类型信道侦听的载波都转换为短侦听类型执行信道侦听。
另外，所述指示信息还用于指示所述终端设备在发送第三上行信息之前，对第三载波进行的信道侦听的侦听类型为所述短侦听类型。相应地，所述终端设备还用于对所述第三载波执行第四信道侦听，其中，所述第四信道侦听为所述短侦听类型的信道侦听。也可以说，所述第四信道侦听为针对第三上行信息执行的信道侦听。在所述第四信道侦听的侦听结果为信道侦听成功，并且，所述第二信道侦听的侦听结果为信道侦听成功时，所述终端设备在所述第三载波上发送所述第三上行信息。
考虑到载波集合中除了包括被指示为长侦听类型信道侦听的第一载波和被指示为短侦听类型信道侦听第二载波，还有可能包括另一个被指示为短侦听类型信道侦听的第三载波，由于在一个执行多载波信道侦听的载波集合中，终端设备对其中任意一个实际执行短侦听类型信道侦听的载波(不论该载波被指示为长侦听类型还是短侦听类型)，其侦听成功的条件都是实际执行长侦听类型信道侦听的载波(第二载波)的信道侦听成功，且该载波的短侦听类型的信道侦听成功，因此受限于这种侦听方式，即使第三载波被指示为短侦听类型，也要额外满足第二载波的第二信道侦听成功才能发送第三上行信息。
例如如图4所示，所述载波集合包括4个载波，其中CC1为第二载波，被网络设备指示使用短侦听类型的信道侦听，CC2为第一载波，被网络设备指示使用长侦听类型的信道侦听，CC4为第三载波，被网络设备指示使用短侦听类型的信道侦听，终端设备实际对CC1执行长侦听类型的信道侦听，对CC2、CC4执行短侦听类型的信道侦听，但CC2或CC4除了需要满足本载波短侦听类型的信道侦听成功，还需要满足CC1长侦听类型的信道侦听成功，才能发送上行信息。
应理解，所述第三上行信息为所述网络设备调度所述终端设备在所述第三载波上发送的上行消息。在本申请实施例中，所述第一上行信息的起始时刻、所述第二上行信息的起 始时刻以及所述第三上行信息的起始时刻是相同的。也就是说，当对第一载波、第二载波以及第三载波的信道侦听成功时，终端设备开始在各自载波的同一时刻发送上行信息。
应理解，终端设备要在该第三载波上发送第三上行信息，除了需要满足第四信道侦听成功，而且还额外需要满足在第二载波上执行长侦听类型的第二信道侦听成功；如果该第二载波上的第二信道侦听失败，即使该终端设备在该第三载波上侦听到空闲，也不能发送该第三上行信息。
在本申请实施例中，所述第三上行信息可以包括该上行数据信息，导频信息以及上行控制信息中的至少一种。其中，所述第三上行信息可以承载在PUSCH中，也可以承载在PUCCH中。进一步的，所述第三上行信息为所述网络设备通过上行授权调度的上行信息。
可选的，所述第三上行信息为所述终端设备在所述第一载波上发送的免调度许可上行传输。类似的，所述第三上行信息和所述第一上行信息的起始时刻以及所述第二上行信息的起始时刻都是相同的，其中，所述第一上行信息可以是免调度许可上行传输，也可以是网络设备调度终端设备发送的上行传输，所述第二上行信息可以是免调度许可上行传输，也可以是网络设备调度终端设备发送的上行传输。
进一步地，终端设备还可以对第二载波执行短侦听类型的信道侦听，称之为第三信道侦听，如果对第二载波CC2进行的第三信道侦听的侦听结果为信道侦听成功，则终端设备可以在所述第二载波上发送所述第二上行消息。特别地，如果终端设备对第二载波CC2进行长侦听类型的信道侦听(第即二信道侦听)的侦听结果为信道侦听失败，但是，对第二载波CC2进行短侦听类型的信道侦听(即第三信道侦听)的侦听结果为信道侦听成功，则终端设备可以在所述第二载波上发送所述第二上行消息。可以理解，终端设备对第二载波执行短侦听类型的信道侦听与终端设备对第二载波执行长侦听类型的信道侦听可以是同时发生的，即，终端设备在对第二载波执行长侦听类型的信道侦听的同时，也顺带完成了对第二载波执行短侦听类型的信道侦听。
应理解，终端设备原本就被该网络设备指示在第二载波上使用单时隙CCA接入信道，因此若该终端设备在该第二载波上执行长侦听类型信道侦听失败的情况下，可以回退(Fallback)到短侦听类型信道侦听，即在该第二上行信息起始时刻之前执行短侦听类型信道侦听，如果该终端设备在该第二载波上执行短侦听类型信道侦听成功，则可以在该第二载波上发送该第二上行信息。
应理解，当终端设备针对该第二载波执行长侦听类型信道侦听失败，且该终端设备针对该第二载波执行短侦听类型信道侦听成功时，虽然该终端设备可以在该第二载波上发送该第二上行信息，但是终端设备不能占用第一载波发送第一上行信息，或者说放弃在该第一载波上发送第一上行信息。对于多载波侦听中，将一个原来为长侦听类型信道侦听的载波切换为短侦听类型信道侦听，则接入信道发送信息的前提条件除了该载波上完成短侦听类型的信道侦听，还需要载波集合中执行长侦听类型信道侦听的载波(第一载波)完成长侦听类型的信道侦听，因此若该第二载波上未完成长侦听类型的信道侦听，回退到短侦听类型信道侦听并完成信道侦听，终端设备虽然可以在第二载波上发送第二上行信息，但是不满足第一载波信道发送第一上行信息的条件，因此不能在该第一载波上发送第一上行信 息。
如图6所示，载波集合包括{CC1，CC2，CC3}，第一载波为CC1，第二载波为CC2，指示信息指示终端设备对CC1执行短侦听类型的信道侦听，对CC2执行长侦听类型的信道侦听，另外网络设备还指示对CC3执行长侦听类型的信道侦听。终端设备在多载波侦听操作中，实际对CC1执行长侦听类型的信道侦听，对CC2、CC3执行短侦听类型的信道侦听。终端设备还可以同时针对CC1执行短侦听类型的信道侦听，当终端设备对CC1的长侦听类型的信道侦听(第一侦听)失败，但是对CC1的短侦听类型的信道侦听(第三侦听)成功时，可以占用CC1发送第一上行信息；但是，考虑到对CC1的长侦听类型的信道侦听失败，不能占用CC2发送上行信息(即使针对CC2的短侦听类型的信道侦听成功)。
下面将从指示信息的数量、指示信息的承载信息以及指示信息的指示方式三个维度详细说明指示信息的具体实现方式。
从指示信息的数量的角度来说，所述指示信息可以是单个指示信息也可以是多个指示信息。
当所述指示信息是单个指示信息时，所述指示信息同时用于指示在发送第一上行信息之前，对第一载波进行的信道侦听的侦听类型为长侦听类型，以及，在发送第二上行信息之前，对第二载波进行的信道侦听的侦听类型为长侦听类型。
当所述指示信息包括多个指示信息时，所述指示信息可以包括第一指示信息以及第二指示信息。其中，所述第一指示信息用于指示在发送第一上行信息之前，对第一载波进行的信道侦听的侦听类型为长侦听类型。所述第二指示信息用于指示在发送所述第二上行信息之前，对所述第二载波上进行的信道侦听的侦听类型为所述短侦听类型。可以理解，当所述第一载波的数量为M个时，所述第一指示信息的数量也可以为M个，其中每个第一指示信息一一对应地指示一个在第一载波上执行信道侦听的侦听类型，当所述第二载波的数量为N个时，所述第二指示信息的数量也可以为N个，其中每个第二指示信息一一对应地指示一个在第二载波上执行信道侦听的侦听类型。
另外，当所述指示信息还用于指示所述终端设备在发送第三上行信息之前，对第三载波进行的信道侦听的侦听类型为所述短侦听类型时，所述指示信息还包括第三指示信息。其中，第三指示信息用于指示所述终端设备在发送第三上行信息之前，对第三载波进行的信道侦听的侦听类型为所述短侦听类型。
应理解，当所述指示信息包括第一指示信息、第二指示信息、第三指示信息中的至少两个指示信息时，分别通过该至少两个指示信息中每个指示信息来指示所述终端设备在该指示信息所对应的载波上发送上行信息之前，对该对应的载波进行的信道侦听的侦听类型。
从指示信息的承载信息的角度来说，所述指示信息或所述第一指示信息或所述第二指示信息或所述第三指示信息可以包括用户特定控制信息或者公共控制信息中的至少一个。
在具体的实施例中，所述用户特定控制信息为承载在下行控制信道中的控制信息。例如，所述用户特定控制信息为用于调度该终端设备发送上行信息的上行授权(UL grant)，或者，所述上行授权中的至少一个字段。可以理解，上述例子仅仅是一种举例，而非具体限定，在其他的实施中，用户特定控制信息还可以是其他承载于下行控制信道中的控制信 息。
进一步地，用户特定控制信息还用于调度所述终端设备在所述载波集合的其中一个载波上发送上行信息。也就是说，用户特定控制信息除了调度所述终端设备发送第一上行信息的同时，还指示所述终端设备在发送第一上行信息之前，对第一载波进行的信道侦听的侦听类型为长侦听类型，和/或，用户特定控制信息除了调度所述终端设备发送第二上行信息的同时，还指示所述终端设备在发送所述第二上行信息之前，对所述第二载波上进行的信道侦听的侦听类型为所述短侦听类型，和/或，用户特定控制信息除了调度所述终端设备发送第三上行信息的同时，还指示所述终端设备在发送所述第三上行信息之前，对所述第三载波上进行的信道侦听的侦听类型为所述短侦听类型。
进一步地，当所述用户特定控制信息用于调度所述终端设备发送上行信息时，所述用户特定控制信息还包括上行信息所占的频域资源、调制编码方式(Modulation and Coding Scheme，MCS)、承载上行信息的物理上行共享信道(Physical Uplink Shared Channel，PUSCH)对应的解调参考信号(Demodulation Reference Signal，DMRS)序列信息中的至少一种。
在具体的实施例中，所述公共控制信息为承载在下行控制信道中的公共控制信息。例如，所述公共控制信息为公共下行控制信道(Physical Downlink Control Channel，CPDCCH)对应的下行控制信息(Downlink Control Information，DCI)，或者，下行控制信息中的至少一个字段。其中，CPDCCH中的DCI为小区公共无线网络临时标识(Cell Common-RadioNetworkTemporaryIdentifier，CC-RNTI)加扰的DCI。可以理解，上述例子仅仅是一种举例，而非具体限定，在其他的实施中，公共控制信息还可以是其他承载于下行控制信道中的公共控制信息。
可以理解，所述指示信息可以全部都是用户特定控制信息，可以全部都是公共控制信息，也可以一部分是用户特定控制信息，另一部分是公共控制信息，本申请不作具体限定。例如，所述指示信息包括用于指示终端设备针对第一载波进行信道侦听的侦听类型为长侦听类型的第一指示信息、用于指示终端设备针对第二载波进行信道侦听的侦听类型为短侦听类型的第二指示信息以及用于指示终端设备针对第三载波进行信道侦听的侦听类型为短侦听类型的第三指示信息中的至少两个指示信息，该至少两个指示信息中的至少一个指示信息为用户特定控制信息，另外至少一个指示信息为公共控制信息。
可选的，所述指示信息所包括的上行授权UL grant或公共物理下行控制信道CPDCCH(或者说CPDCCH中承载的公共下行控制信息，Common DCI)用于指示所述终端设备在发送所述第二上行信息之前，对所述第二载波进行的信道侦听的侦听类型为所述短侦听类型。换句话说，所述指示信息包括第二指示信息，其中第二指示信息承载在第二UL grant或者第二CPDCCH中，第二指示信息用于指示所述终端设备在发送所述第二上行信息之前，对所述第二载波进行的信道侦听的侦听类型为所述短侦听类型。
可选的，所述指示信息所包括的上行授权UL grant或公共物理下行控制信道CPDCCH(或者说CPDCCH中承载的公共下行控制信息)用于指示所述终端设备在发送所述第一上行信息之前，对所述第一载波进行的信道侦听的侦听类型为所述长侦听类型。换句话说，所述指示信息包括第一指示信息，其中第一指示信息承载在第一UL grant或者第一 CPDCCH中，第一指示信息用于指示所述终端设备在发送所述第一上行信息之前，对所述第一载波进行的信道侦听的侦听类型为所述长侦听类型。
可选的，所述指示信息所包括的上行授权UL grant或公共物理下行控制信道CPDCCH(或者说CPDCCH中承载的公共下行控制信息)用于指示所述终端设备在发送所述第三上行信息之前，对所述第三载波进行的信道侦听的侦听类型为所述短侦听类型。换句话说，所述指示信息包括第三指示信息，其中第三指示信息承载在第三UL grant或者第三CPDCCH中，第三指示信息用于指示所述终端设备在发送所述第三上行信息之前，对所述第三载波进行的信道侦听的侦听类型为所述短侦听类型。
进一步的，对于所述第一指示信息用于指示所述终端设备对所述第一载波进行的信道侦听的侦听类型，可以通过后面阐述的显式方式或隐式方式指示，其中显式方式对应通过所述第一UL grant进行指示的方式，隐式方式对应通过所述第一CPDCCH进行指示的方式。同样的，所述第二指示信息用于指示所述终端设备对所述第二载波进行的信道侦听的侦听类型，其中显式方式对应通过所述第二UL grant进行指示的方式，隐式方式对应通过所述第二CPDCCH进行指示的方式；述第二指示信息用于指示所述终端设备对所述第二载波进行的信道侦听的侦听类型，其中显式方式对应通过所述第二UL grant进行指示的方式，隐式方式对应通过所述第二CPDCCH进行指示的方式。或者说，对于所述指示信息用于指示所述终端设备对所述第一载波或第二载波或第三载波进行的信道侦听的侦听类型，可以通过后面阐述的显式方式或隐式方式指示，其中显式方式对应通过所述UL grant进行指示的方式，隐式方式对应通过所述CPDCCH进行指示的方式。
从指示信息的指示方式的角度来说，所述指示信息可以采用显式方式或者隐式方式进行指示。
当所述第一指示信息采用显式方式进行指示时，所述第一指示信息可以是用于表明信道侦听类型的预设比特、预设字符或者预设字段等等，本申请不作具体限定。例如，通过第一UL grant中的’Channel Access type’字段对侦听类型进行指示。再例如，第一指示信息可以是承载于上行授权的1个比特，当所述比特的值为“0”时，指示所述第一载波的信道侦听类型为长侦听类型；当所述比特的值为“1”时，指示所述第一载波的信道侦听类型为短侦听类型，或者，当所述比特的值为“1”时，指示所述第一载波的信道侦听类型为长侦听类型；当所述比特的值为“0”时，指示所述第一载波的信道侦听类型为短侦听类型。上述方式同样适用于当该指示信息或第二指示信息指示所述第二载波的信道侦听类型时，或者当该指示信息或第三指示信息指示所述第三载波的信道侦听类型时。
当所述第二指示信息采用隐式方式进行指示时，所述第二指示信息可以指示第二时域资源信息，当第二上行信息所在的时间单元不晚于第二时域资源的结束时间单元时，所述第二指示信息指示终端设备发送第二上行信息前执行短侦听类型的信道侦听，或者说终端设备确定发送第二上行信息前应执行短侦听类型的信道侦。。上述方式同样的可以适用于当所述第一指示信息采用隐式方式进行指示时：所述第一指示信息可以指示第一时域资源信息，当第一上行信息所在的时间单元晚于第一时域资源的结束时间单元时，所述第一指示信息指示终端设备发送第一上行信息前执行长侦听类型的信道侦听，或者说终端设备确定发送第一上行信息前应执行长侦听类型的信道侦听。上述方式同样的可以适用于当所述第 三指示信息采用隐式方式进行指示时：所述第三指示信息可以指示第三时域资源信息，当第三上行信息所在的时间单元不晚于第三时域资源的结束时间单元时，所述第三指示信息指示终端设备发送第三上行信息前执行短侦听类型的信道侦听，或者说终端设备确定发送第三上行信息前应执行短侦听类型的信道侦听。
具体地，称上述第一时域资源信息或第二时域资源信息或第三时域资源信息为时域资源，所述时域资源信息可以体现为以下的任意一种方式：
在第一种方式中，所述时域资源信息包括：所述下行最大信道占用时间的结束时刻，或者，所述下行最大信道占用时间的剩余时间长度。终端设备可以知道下行信息的结束时刻，所以，在接收到所述下行最大信道占用时间的时域资源信息之后，终端设备可以根据所述下行最大信道占用时间的结束时刻，或者，所述下行最大信道占用时间的剩余时间长度直接确定是否能够共享所述下行最大信道占用时间。
在第二种方式中，所述时域资源信息包括：所述下行最大信道占用时间的起始时刻，以及，所述下行最大信道占用时间的持续时长。终端设备可以知道下行信息的结束时刻，所以，在接收到所述下行最大信道占用时间的时域资源信息之后，终端设备可以根据所述下行最大信道占用时间的起始时刻，以及，所述下行最大信道占用时间的持续时长确定所述下行最大信道占用时间的结束时刻，从而确定是否能够共享所述下行最大信道占用时间。
对于第一种方式和第二种方式，当终端设备要发送的上行信息(第一上行信息或第二上行信息或第三上行信息)所在的时间单元不晚于所述下行最大信道占用时间的结束时间单元(结束时刻)时，该指示信息指示该终端设备执行短侦听类型的信道侦听，当终端设备要发送的上行信息所在的时间单元晚于所述下行最大信道占用时间的结束时间单元(结束时刻)时，该指示信息指示该终端设备执行长侦听类型的信道侦听。
在第三种方式中，所述时域资源信息包括：(所述下行最大信道占用时间内)被调度的上行传输的起始时刻，以及，(所述下行最大信道占用时间内)被调度的上行传输的持续时长。
进一步的，该上行传输的起始时刻(或起始时间单元)可以是该上行传输的起始时刻(或起始时间单元)相比于承载该指示信息的下行传输的结束时刻(或结束时间单元)或承载该指示信息的时间单元起始时刻(或时间单元)的时间偏移(或者说时间间隔)，上行传输的结束时刻(或结束时间单元)为上行传输的起始时刻(或起始时间单元)加上上行传输的持续时长。其中，当终端设备要发送的上行信息(第一上行信息或第二上行信息或第三上行信息)所在的时间单元不晚于该上行传输的结束时间单元时，该指示信息(或第一指示信息或第二指示信息或第三指示信息)指示该终端设备执行短侦听类型的信道侦听，当终端设备要发送的上行信息所在的时间单元晚于该上行传输的结束时间单元时，该指示信息(或第一指示信息或第二指示信息或第三指示信息)指示该终端设备执行长侦听类型的信道侦听。例如，所述指示信息包括公共下行控制信道中的公共控制信息，该公共下行控制信道中的’UL offset’字段用于指示上行传输的起始时间单元相比于公共下行控制信道所在的时间单元(称为n)的偏移量(称为1)，’UL duration’字段用于指示上行传输的持续时长(称为d)，则该指示信息指示该终端设备可以在上行时间单元n+1+i上要发送的上行信息前，执行短侦听类型的信道侦听，i＝0，1，...，d-1。该指示信息指示终端设备在n+1+d之 后的上行时间单元上要发送的上行信息前，执行长侦听类型的信道侦听。例如图7所示，第二载波CC1的公共下行控制信道承载在子帧#n+4上，指示被调度的上行传输的起始时刻相比于的时间偏移为5ms，上行传输的持续时长为4ms，因此该终端设备可以判断该下行最大信道占用时间的结束时刻为#n+12，因此#n+9～#n+12上的上行信息可以共享该该下行最大信道占用时间而使用短侦听类型的信道侦听；第一载波CC2的公共下行控制信道承载在子帧#n+6上，指示被调度的上行传输的起始时刻相比于的时间偏移为3ms，上行传输的持续时长为2ms，因此该终端设备可以判断下行最大信道占用时间的结束时刻为#n+10，因此#n+9～#n+12上的上行信息不能共享该下行最大信道占用时间，需要使用长侦听类型的信道侦听。应理解，上行信息所在的时间单元，称之为第一时间单元包含在该下行最大信道占用时间内是指，该第一时间单元的结束时间单元不晚于该下行最大信道占用时间或上行传输的结束时间单元。可选的，该下行最大信道占用时间的结束时刻为该下行最大信道占用时间的起始时刻加上该下行最大信道占用时间对应的持续时长。可选的，该下行最大信道占用时间的结束时刻为该下行最大信道占用时间的起始时刻加上该下行最大信道占用时间对应的持续时长加上所有空隙(Gap)的时长。其中，该下行最大信道占用时间的起始时刻为该网络设备执行完成信道侦听并开始发送下行信息的时刻。进一步地，该所有空隙为该下行最大信道占用时间的起始时刻之后，未被该网络设备所占用发送下行信息，且未被该网络设备调度发送上行信息(可以是被该网络设备调度该终端设备，也可以不仅限于该终端设备而包括被该网络设备调度的至少一个终端设备)的时域资源或者说空隙(Gap)。进一步地，任意一个空隙都是持续时间大于第一预设长度的空隙，例如该第一预设长度为25us。该下行最大信道占用时间对应的持续时长为该网络设备执行长侦听类型的信道侦听使用的信道接入优先级所对应的下行最大信道占用时间长度。例如，第一载波CC1的下行最大信道占用时间的时长为6ms，未被该网络设备占用发送下行信息且未被该网络设备调度(接入该网络设备的终端设备)发送上行信息的Gap为6ms，因此下行最大信道占用时间的结束时刻为#n+12，也就是说，上行子帧#n+9～#n+12都在下行最大信道占用时间内。
基于同一发明构思，本发明实施例还提供一种终端设备(如图8所示)，该终端设备用于实现前述图3实施例所描述的方法。如图8所示，终端设备70包括：发射器703、接收器704、存储器702和与存储器702耦合的处理器701(处理器701的数量可以是一个或多个，图8中以一个处理器为例)。发射器703、接收器704、存储器702和处理器701可通过总线或者其它方式连接(图8中以通过总线连接为例)。其中，发射器703用于向外部发送数据，接收器704用于从外部接收数据。存储器702用于存储程序代码，处理器701用于调用并运行存储于存储器702中的程序代码。
存储器702中存储的程序代码具体用于实现图3实施例中的所述终端设备的功能。具体的，处理器701用于调用存储器702中存储的程序代码，并执行以下步骤：
终端设备通过发射器接收器704接收网络设备发送的指示信息，其中，所述指示信息用于指示所述终端设备在发送第一上行信息之前，对第一子带进行的信道侦听的侦听类型为长侦听类型，且指示所述终端设备在发送所述第二上行信息之前，对所述第二子带进行的信道侦听的侦听类型为所述短侦听类型。
终端设备通过处理器701对所述第一子带执行第一信道侦听，对第二子带执行第二信道侦听，其中，所述第一信道侦听为短侦听类型的信道侦听，所述第二信道侦听为所述长侦听类型的信道侦听；
在所述第一信道侦听的侦听结果以及对所述第二信道侦听的侦听结果满足第一预设条件时，所述终端设备通过所述发射器703在所述第一子带上发送所述第一上行信息。
可选地，所述第一预设条件为所述第一信道侦听的侦听结果为信道侦听成功，并且，所述第二信道侦听的侦听结果为信道侦听成功。
可选地，在所述第二信道侦听的侦听结果为信道侦听成功时，所述终端设备通过所述发射器703在所述第二子带上发送所述第二上行信息。
可选地，所述指示信息所包括的上行授权或公共物理下行控制信道用于指示所述终端设备在发送所述第二上行信息之前，对所述第二子带进行的信道侦听的侦听类型为所述短侦听类型。
可选地，所述终端设备通过处理器701对所述第二子带执行第三信道侦听，其中，所述第三信道侦听为所述短侦听类型的信道侦听，所述第三信道侦听为针对所述第二上行信息执行的信道侦听；在所述第三信道侦听的侦听结果为信道侦听成功时，所述终端设备通过发射器703在所述第二子带上发送所述第二上行信息。
可选地，在所述第二信道侦听的侦听结果为信道侦听失败，并且，所述第三信道侦听的侦听结果为信道侦听成功时，所述终端设备通过所述发射器703在所述第二子带上发送所述第二上行信息。
可选地，所述第一上行信息为所述网络设备调度所述终端设备发送的上行信息，所述第二上行信息为所述网络设备调度所述终端设备发送的上行信息，所述第一上行信息的起始时刻和所述第二上行信息的起始时刻是相同的。
可选地，所述长侦听类型的信道侦听为随机回退空闲信道评测；所述短侦听类型的信道侦听为单时隙空闲信道评测。
可选地，所述第一子带为子带集合中任意一个侦听类型被网络设备指示为所述长侦听类型的子带，其中，所述第一子带和所述第二子带均属于所述子带集合。
可选地，所述终端设备通过处理器701确定所述第二子带为执行所述长侦听类型信道侦听的子带，其中，所述第二子带为所述终端设备在子带集合中随机选择或任意选择的子带，所述第一子带和所述第二子带均属于所述子带集合。
可选地，当所述第一子带和所述第二子带之间满足切换侦听类型条件时，终端设备通过处理器701对所述第一子带执行所述第一信道侦听，对所述第二子带执行所述第二信道侦听；其中，所述切换侦听类型条件包括以下至少一种：所述第一子带的信道拥塞程度大于所述第二子带的信道拥塞程度；以及，所述第一子带的信道衰落程度大于所述第二子带的信道衰落程度。
可选地，所述指示信息还用于指示所述终端设备在发送第三上行信息之前，对第三子带进行的信道侦听的侦听类型为所述短侦听类型；所述终端设备通过处理器701对所述第三子带执行第四信道侦听，其中，所述第四信道侦听为所述短侦听类型的信道侦听；
在所述第四信道侦听的侦听结果为信道侦听成功，并且，所述第二信道侦听的侦听结 果为信道侦听成功时，所述终端设备通过发射器703在所述第三子带上发送所述第三上行信息。
需要说明的，通过前述图3实施例的详细描述，本领域技术人员可以清楚的知道终端设备70所包含的各个部件的实现方法，所以为了说明书的简洁，在此不再详述。
基于同一发明构思，本发明实施例还提供一种信息发送装置(如图9所示)，该信息发送装置用于实现前述图9实施例所描述的方法。如图9所示，信息发送装置80包括接收模块810、侦听模块820以及发送模块830。其中，接收模块810以及发送模块830可以是单独设置的两个模块，例如，接收模块810可以是独立设置的接收器，发送模块830可以是独立设置的发送器。接收模块810以及发送模块830也可以是集成设置的模块，例如，收发器等等。此处，收发器可以是射频收发器等等。
所述接收模块810用于接收网络设备发送的指示信息，其中，所述指示信息用于指示所述终端设备在发送第一上行信息之前，对第一子带进行的信道侦听的侦听类型为长侦听类型，且指示所述终端设备在发送所述第二上行信息之前，对所述第二子带进行的信道侦听的侦听类型为所述短侦听类型。
所述侦听模块820用于对所述第一子带执行第一信道侦听，对第二子带执行第二信道侦听，其中，所述第一信道侦听为短侦听类型的信道侦听，所述第二信道侦听为所述长侦听类型的信道侦听。
所述发送模块830用于在所述第一信道侦听的侦听结果以及对所述第二信道侦听的侦听结果满足第一预设条件时，在所述第一子带上发送所述第一上行信息。
需要说明的，通过前述图3实施例的详细描述，本领域技术人员可以清楚的知道终端设备80所包含的各个功能模块的实现方法，所以为了说明书的简洁，在此不再详述。
本申请实施例还提供了一种通讯系统，该通信系统包括：网络设备和终端设备。所述终端设备对应图3方法实施例中的所述终端设备。
本领域内的技术人员应明白，本发明的实施例可提供为方法、系统、或计算机程序产品。因此，本发明可采用完全硬件实施例、完全软件实施例、或结合软件和硬件方面的实施例的形式。而且，本发明可采用在一个或多个其中包含有计算机可用程序代码的计算机可用存储介质(包括但不限于磁盘存储器和光学存储器等)上实施的计算机程序产品的形式。
本发明是参照根据本发明实施例的方法、设备(系统)、和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机程序指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机程序指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器，使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装置。
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式 工作的计算机可读存储器中，使得存储在该计算机可读存储器中的指令产生包括指令装置的制造品，该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上，使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理，从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。
显然，本领域的技术人员可以对本发明进行各种改动和变型而不脱离本发明的精神和范围。这样，倘若本发明的这些修改和变型属于本发明权利要求及其等同技术的范围之内，则本发明也意图包含这些改动和变型在内。

Claims (27)

  1. 一种信息发送方法，其特征在于，包括：
    终端设备接收网络设备发送的指示信息，其中，所述指示信息用于指示所述终端设备在发送第一上行信息之前，对第一子带进行的信道侦听的侦听类型为长侦听类型，且指示所述终端设备在发送所述第二上行信息之前，对所述第二子带进行的信道侦听的侦听类型为短侦听类型；
    终端设备对所述第一子带执行第一信道侦听，对第二子带执行第二信道侦听，其中，所述第一信道侦听为所述短侦听类型的信道侦听，所述第二信道侦听为所述长侦听类型的信道侦听；
    在所述第一信道侦听的侦听结果以及对所述第二信道侦听的侦听结果满足第一预设条件时，所述终端设备在所述第一子带上发送所述第一上行信息。
  2. 根据权利要求1所述的方法，其特征在于，所述第一预设条件为所述第一信道侦听的侦听结果为信道侦听成功，并且，所述第二信道侦听的侦听结果为信道侦听成功。
  3. 根据权利要求1或2所述的方法，其特征在于，所述方法还包括：
    在所述第二信道侦听的侦听结果为信道侦听成功时，所述终端设备在所述第二子带上发送所述第二上行信息。
  4. 根据权利要求1至3任一权利要求所述的方法，其特征在于，所述指示信息所包括的上行授权或公共物理下行控制信道用于指示所述终端设备在发送所述第二上行信息之前，对所述第二子带进行的信道侦听的侦听类型为所述短侦听类型。
  5. 根据权利要求1-4任一权利要求所述的方法，其特征在于，所述方法还包括：
    所述终端设备对所述第二子带执行第三信道侦听，其中，所述第三信道侦听为所述短侦听类型的信道侦听，所述第三信道侦听为针对所述第二上行信息执行的信道侦听；
    在所述第三信道侦听的侦听结果为信道侦听成功时，所述终端设备在所述第二子带上发送所述第二上行信息。
  6. 根据权利要求5所述的方法，其特征在于，在所述第三信道侦听的侦听结果为信道侦听成功时，所述终端设备在所述第二子带上发送所述第二上行信息，包括：
    在所述第二信道侦听的侦听结果为信道侦听失败，并且，所述第三信道侦听的侦听结果为信道侦听成功时，所述终端设备在所述第二子带上发送所述第二上行信息。
  7. 根据权利要求1-6任一权利要求所述的方法，其特征在于，所述第一上行信息为所述网络设备调度所述终端设备发送的上行信息，所述第二上行信息为所述网络设备调度所述终端设备发送的上行信息，所述第一上行信息的起始时刻和所述第二上行信息的起始时刻是相同的。
  8. 根据权利要求1-7任一权利要求所述的方法，其特征在于，所述长侦听类型的信道侦听为随机回退空闲信道评测；所述短侦听类型的信道侦听为单时隙空闲信道评测。
  9. 根据权利要求1-8任一权利要求所述的方法，其特征在于，所述第一子带为子带集 合中任意一个侦听类型被网络设备指示为所述长侦听类型的子带，其中，所述第一子带和所述第二子带均属于所述子带集合。
  10. 根据权利要求1-9任一权利要求所述的方法，其特征在于，在终端设备对第二子带执行第二信道侦听之前，所述方法还包括：
    所述终端设备确定所述第二子带为执行所述长侦听类型信道侦听的子带，其中，所述第二子带为所述终端设备在子带集合中随机选择或任意选择的子带，所述第一子带和所述第二子带均属于所述子带集合。
  11. 根据权利要求1-10任一权利要求所述的方法，其特征在于，终端设备对所述第一子带执行第一信道侦听，对所述第二子带执行第二信道侦听，包括：
    当所述第一子带和所述第二子带之间满足切换侦听类型条件时，终端设备对所述第一子带执行所述第一信道侦听，对所述第二子带执行所述第二信道侦听；其中，
    所述切换侦听类型条件包括以下至少一种：所述第一子带的信道拥塞程度大于所述第二子带的信道拥塞程度；以及，所述第一子带的信道衰落程度大于所述第二子带的信道衰落程度。
  12. 根据权利要求1-11任一权利要求所述的方法，其特征在于，所述指示信息还用于指示所述终端设备在发送第三上行信息之前，对第三子带进行的信道侦听的侦听类型为所述短侦听类型；所述方法还包括：
    所述终端设备对所述第三子带执行第四信道侦听，其中，所述第四信道侦听为所述短侦听类型的信道侦听；
    在所述第四信道侦听的侦听结果为信道侦听成功，并且，所述第二信道侦听的侦听结果为信道侦听成功时，所述终端设备在所述第三子带上发送所述第三上行信息。
  13. 一种信息发送装置，其特征在于，包括：接收模块、侦听模块以及发送模块，
    所述接收模块用于接收网络设备发送的指示信息，其中，所述指示信息用于指示所述终端设备在发送第一上行信息之前，对第一子带进行的信道侦听的侦听类型为长侦听类型，且指示所述终端设备在发送所述第二上行信息之前，对所述第二子带进行的信道侦听的侦听类型为短侦听类型；
    所述侦听模块用于对所述第一子带执行第一信道侦听，对第二子带执行第二信道侦听，其中，所述第一信道侦听为所述短侦听类型的信道侦听，所述第二信道侦听为所述长侦听类型的信道侦听；
    所述发送模块用于在所述第一信道侦听的侦听结果以及对所述第二信道侦听的侦听结果满足第一预设条件时，在所述第一子带上发送所述第一上行信息。
  14. 根据权利要求13所述的装置，其特征在于，所述第一预设条件为所述第一信道侦听的侦听结果为信道侦听成功，并且，所述第二信道侦听的侦听结果为信道侦听成功。
  15. 根据权利要求13或14所述的装置，其特征在于，所述发送模块还用于在所述第二信道侦听的侦听结果为信道侦听成功时，在所述第二子带上发送所述第二上行信息。
  16. 根据权利要求13至15任一权利要求所述的装置，其特征在于，所述指示信息所包括的上行授权或公共物理下行控制信道用于指示所述终端设备在发送所述第二上行信息之前，对所述第二子带进行的信道侦听的侦听类型为所述短侦听类型。
  17. 根据权利要求13-16任一权利要求所述的装置，其特征在于，
    所述侦听模块还用于对所述第二子带执行第三信道侦听，其中，所述第三信道侦听为所述短侦听类型的信道侦听；
    所述发送模块还用于在所述第三信道侦听的侦听结果为信道侦听成功时，在所述第二子带上发送所述第二上行信息。
  18. 根据权利要求16所述的装置，其特征在于，所述发送模块还用于在所述第二信道侦听的侦听结果为信道侦听失败，并且，所述第三信道侦听的侦听结果为信道侦听成功时，在所述第二子带上发送所述第二上行信息。
  19. 根据权利要求13-18任一权利要求所述的装置，其特征在于，所述第一上行信息为所述网络设备调度所述终端设备发送的上行信息，所述第二上行信息为所述网络设备调度所述终端设备发送的上行信息，所述第一上行信息的起始时刻和所述第二上行信息的起始时刻是相同的。
  20. 根据权利要求13-19任一权利要求所述的装置，其特征在于，所述长侦听类型的信道侦听为随机回退空闲信道评测；所述短侦听类型的信道侦听为单时隙空闲信道评测。
  21. 根据权利要求13-20任一权利要求所述的装置，其特征在于，所述第一子带为载波集合中任意一个侦听类型被网络设备指示为所述长侦听类型的子带，其中，所述第一子带和所述第二子带均属于所述子带集合。
  22. 根据权利要求13-21任一权利要求所述的装置，其特征在于，
    所述终端设备确定所述第二子带为执行所述长侦听类型信道侦听的子带，其中，所述第二子带为所述终端设备在子带集合中随机选择或任意选择的子带，所述第一子带和所述第二子带均属于所述子带集合。
  23. 根据权利要求13-22任一权利要求所述的装置，其特征在于，
    所述侦听模块用于在所述第一子带和所述第二子带之间满足切换侦听类型条件时，对所述第一子带执行所述第一信道侦听，对所述第二子带执行所述第二信道侦听；其中，
    所述切换侦听类型条件包括以下至少一种：所述第一子带的信道拥塞程度大于所述第二子带的信道拥塞程度；以及，所述第一子带的信道衰落程度大于所述第二子带的信道衰落程度。
  24. 根据权利要求13-23任一权利要求所述的装置，其特征在于，所述指示信息还用于指示所述终端设备在发送第三上行信息之前，对第三子带进行的信道侦听的侦听类型为所述短侦听类型；
    所述侦听模块还用于对所述第三子带执行第四信道侦听，其中，所述第四信道侦听为所述短侦听类型的信道侦听；
    所述发送模块还用于在所述第四信道侦听的侦听结果为信道侦听成功，并且，所述第二信道侦听的侦听结果为信道侦听成功时，在所述第三子带上发送所述第三上行信息。
  25. 一种终端设备，其特征在于，存储器以及与所述存储器耦合的处理器、通信模块，其中：所述通信模块用于发送或者接收外部发送的数据，所述存储器用于存储如权利要求1至12任一权利要求所描述的方法的实现代码，所述处理器用于执行所述存储器中存储的程序代码，即执行如权利要求1至12任一权利要求描述的方法。
  26. 一种计算机可读存储介质，其特征在于，所述计算机可读存储介质存储有计算机程序，所述计算机程序被处理器执行时实现如权利要求1至12任一权利要求所述的方法。
  27. 一种通讯系统，其特征在于，包括网络设备以及终端设备，其中，所述网络设备与所述终端设备之间能够进行通讯，所述终端设备为如权利要求13-24任一权利要求所述的终端设备。
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