WO2018027997A1

WO2018027997A1 - Uplink signal transmission method, terminal device, and network device

Info

Publication number: WO2018027997A1
Application number: PCT/CN2016/095066
Authority: WO
Inventors: 李�远; 官磊; 闫志宇
Original assignee: 华为技术有限公司
Priority date: 2016-08-12
Filing date: 2016-08-12
Publication date: 2018-02-15
Also published as: CN109565797A

Abstract

Embodiments of the invention provide an uplink signal transmission method, a terminal device, and a network device. The method comprises: a terminal device receiving first control information, second control information, and third control information that are sent by a network device, wherein the first control information instructs the terminal device to send a first Hybrid Automatic Repeat Request Acknowledgment (HARQ-ACK) on a first uplink channel, and the second control information instructs the terminal device to send a second HARQ-ACK on a second uplink channel; and if the third control information instructs the terminal device to send first uplink information on the first uplink channel, the terminal device determining, according to the second control information and the third control information, to send the first uplink information on the first uplink channel to the network device, and send the second HARQ-ACK on the second uplink channel to the network device, such that when an uplink signal is transmitted on an unlicensed spectrum, resource utilization of the unlicensed spectrum can be increased.

Description

Uplink signal transmission method, terminal device and network device

Technical field

The embodiments of the present invention relate to communication technologies, and in particular, to an uplink signal transmission method, a terminal device, and a network device.

Background technique

The Extended Licensed-Assisted Access Using Long Term Evolution (eLAA-LTE) system can extend the available spectrum to the 5 GHz unlicensed band through Carrier Aggregation (CA) technology. The unlicensed frequency band is used to extend the existing LTE service, that is, the unlicensed frequency band is used to carry part of the data service in the LTE system.

At present, the eLAA-LTE system can not only transmit downlink signals in unlicensed spectrum, such as downlink shared channel, downlink control channel, synchronization signal, and downlink reference signal, but also transmit uplink signals in unlicensed spectrum, for example, shared channel (Physical). Uplink Shared Channel (PUSCH), De Modulation Reference Signal (DMRS), Sounding Reference Signal (SRS), etc.

However, in the prior art, when the uplink signal is transmitted on the unlicensed spectrum, the utilization rate of the unlicensed spectrum resource is low, which cannot meet the requirements in actual use.

Summary of the invention

The embodiments of the present invention provide an uplink signal transmission method, a terminal device, and a network device, which are used to solve the technical problem that the utilization rate of the unlicensed spectrum resource is low when the uplink signal is transmitted on the unlicensed spectrum in the prior art.

In a first aspect, an embodiment of the present invention provides an uplink signal transmission method, including:

The terminal device receives the first control information, the second control information, and the third control information that are sent by the network device, where the first control information indicates that the terminal device sends the first hybrid automatic repeat request acknowledgement HARQ-ACK on the first uplink channel. The second control information indicates that the terminal device sends a second HARQ-ACK on the second uplink channel.

If the third control information indicates that the terminal device sends the first uplink information on the first uplink channel, the terminal device determines, according to the second control information and the third control information, that the An uplink channel sends the first uplink information to the network device, and sends the second HARQ-ACK to the network device on the second uplink channel.

With the uplink signal transmission method provided by the first aspect, the terminal device receives the first control information for indicating that the terminal device sends the first HARQ-ACK on the first uplink channel, and receives the indication that the terminal device is in the second uplink channel. Sending the second control information of the second HARQ-ACK, and receiving the third control information indicating that the terminal device sends the first uplink information on the first uplink channel, the terminal device may be configured according to the second control information and the third control information, Determining that the first uplink information is sent on the first uplink channel and the second HARQ-ACK is sent on the second uplink channel, so as to effectively utilize the uplink control channel, the resource utilization of the uplink transmission is improved. If the uplink transmission is an uplink transmission of an unlicensed spectrum, the utilization of the unlicensed spectrum resource can be improved.

Optionally, in a possible implementation manner of the first aspect, the method further includes:

If the third control information does not indicate that the terminal device sends the first uplink information on the first uplink channel, the terminal device determines, according to the first control information and the second control information, that The first uplink channel transmits the first HARQ-ACK, and the second uplink channel transmits the second HARQ-ACK.

With the uplink signal transmission method provided by the possible implementation, the terminal device receives the first control information for instructing the terminal device to send the first HARQ-ACK on the first uplink channel, and receives the second device information indicating that the terminal device is in the second Transmitting, by the uplink channel, second control information of the second HARQ-ACK, and receiving, by the terminal device, third control information that does not send the first uplink information on the first uplink channel, the terminal device may be configured according to the first control information, the second The control information determines that the first HARQ-ACK is sent on the first uplink channel and the second HARQ-ACK is sent on the second uplink channel, and the reliability of the HARQ-ACK transmission is improved on the basis of improving the resource utilization of the uplink transmission. Therefore, the number of times the terminal device sends the HARQ-ACK is increased, thereby increasing the probability that the network device receives the HARQ-ACK.

Optionally, in a possible implementation manner of the first aspect, the first uplink channel is a short physical uplink control channel sPUCCH, the second uplink channel is an extended physical uplink control channel ePUCCH, or physical uplink sharing Channel PUSCH.

Optionally, in a possible implementation manner of the first aspect, the first uplink control information At least one of the following information is included: a sounding reference signal SRS, channel state information CSI.

Optionally, in a possible implementation manner of the first aspect, the first uplink channel is a first extended physical uplink control channel ePUCCH, the second uplink channel is a second ePUCCH, or a physical uplink shared channel PUSCH.

Optionally, in a possible implementation manner of the first aspect, the first uplink control information includes channel state information CSI.

Optionally, in a possible implementation manner of the first aspect, the second downlink data channel set corresponding to the second HARQ-ACK includes the first downlink data channel set corresponding to the first HARQ-ACK.

Optionally, in a possible implementation manner of the first aspect, the first uplink channel and the second uplink channel occupy different time domain resources.

Optionally, in a possible implementation manner of the first aspect, the first uplink channel and the second uplink channel are in the same uplink transmission on the unlicensed spectrum.

In a second aspect, an embodiment of the present invention provides an uplink signal transmission method, including:

The network device sends the first control information, the second control information, and the third control information to the terminal device, where the first control information indicates that the terminal device sends the first hybrid automatic repeat request acknowledge HARQ-ACK on the first uplink channel, The second control information indicates that the terminal device sends a second HARQ-ACK on the second uplink channel;

If the third control information indicates that the terminal device sends the first uplink information on the first uplink channel, the network device determines, according to the second control information, the third control information, that Receiving, by the uplink channel, the first uplink information sent by the terminal device, and receiving, by the second uplink channel, the second HARQ-ACK sent by the terminal device.

Optionally, in a possible implementation manner of the second aspect, the method further includes:

If the third control information does not indicate that the terminal device sends the first uplink information on the first uplink channel, the network device determines, according to the first control information and the second control information, that The first uplink channel receives the first HARQ-ACK sent by the terminal device, and receives the second HARQ-ACK sent by the terminal device on the second uplink channel.

Optionally, in a possible implementation manner of the second aspect, the first uplink channel is a short physical uplink control channel sPUCCH, the second uplink channel is an extended physical uplink control channel ePUCCH, or physical uplink sharing Channel PUSCH.

Optionally, in a possible implementation manner of the second aspect, the first uplink control information includes at least one of the following: a sounding reference signal SRS, and channel state information CSI.

Optionally, in a possible implementation manner of the second aspect, the first uplink channel is a first extended physical uplink control channel ePUCCH, the second uplink channel is a second ePUCCH, or a physical uplink shared channel PUSCH.

Optionally, in a possible implementation manner of the second aspect, the first uplink control information includes channel state information CSI.

Optionally, in a possible implementation manner of the second aspect, the second downlink data channel set corresponding to the second HARQ-ACK includes the first downlink data channel set corresponding to the first HARQ-ACK.

Optionally, in a possible implementation manner of the second aspect, the first uplink channel and the second uplink channel occupy different time domain resources.

Optionally, in a possible implementation manner of the second aspect, the first uplink channel and the second uplink channel are in the same uplink transmission on the unlicensed spectrum.

For the beneficial effects of the above-mentioned first aspect and the possible implementation manners of the first aspect, the benefits of the uplink signal transmission method provided by the foregoing second aspect and the possible implementation manners of the second aspect may be referred to herein. No longer.

In a third aspect, an embodiment of the present invention provides an uplink signal transmission method, including:

Receiving, by the terminal device, the first indication information, where the first indication information is used to indicate that the terminal device sends an uplink sounding reference signal on the first symbol of the first subframe;

Determining, by the terminal device, a first window length according to the subframe information of the first subframe; the first window length is a contention window length of the terminal device performing channel idle evaluation; and the subframe of the first subframe The information includes at least one of: a subframe type of the first subframe, and a downlink symbol number in the first subframe;

The terminal device performs channel idle evaluation according to the first window length; the channel idle evaluation is used to determine whether the uplink sounding reference signal is allowed to be sent on the first symbol of the first subframe;

When the channel idle evaluation is successful, the terminal device sends the uplink sounding reference signal on the first symbol of the first subframe according to the first indication information.

According to the uplink signal transmission method provided by the third aspect, the terminal device sends the received by the base station After indicating the first indication information that the terminal device sends the uplink SRS on the first symbol of the first subframe, determining, according to the subframe information of the first subframe, the contention window length of the terminal device performing channel idle evaluation, thereby The terminal device may perform the channel idle evaluation according to the contention window length to improve the probability that the terminal device completes the channel idle evaluation process before the first symbol of the first subframe starts, so that the terminal device can successfully verify the channel idleness. The uplink SRS is successfully sent on the first symbol of the first subframe, which improves the success rate of transmitting the uplink SRS, thereby improving the resource utilization of the uplink channel and improving the utilization of the unlicensed spectrum resource.

Optionally, in a possible implementation manner of the third aspect, the subframe type is a special subframe or a normal subframe.

Optionally, in a possible implementation manner of the third aspect, the determining, by the terminal device, the first window length according to the subframe information of the first subframe, includes:

The terminal device determines the first window length according to the subframe information of the first subframe and the mapping relationship between the preset subframe information and the window length.

With the uplink signal transmission method provided by the third aspect, the terminal device may obtain, by the base station, first indication information that is sent by the base station to instruct the terminal device to send the uplink SRS on the first symbol of the first subframe, and according to the first subframe. The subframe information determines a contention window length that the terminal device performs the channel idle evaluation, so that the terminal device can perform the channel idle evaluation according to the contention window length, so that the terminal device can complete the channel before the first symbol of the first subframe starts. The probability of the idle evaluation process, so that the terminal device can successfully send the uplink SRS on the first symbol of the first subframe when the CCA evaluation is successful, thereby improving the success rate of transmitting the uplink SRS, thereby improving the resource utilization of the uplink channel. Increase the utilization of unlicensed spectrum resources.

Optionally, in a possible implementation manner of the third aspect, the subframe information of the first subframe includes: a subframe type of the first subframe;

The mapping relationship between the preset subframe information and the window length includes:

If the type of the first subframe is a special subframe, the length of the window corresponding to the first subframe information is a first preset value;

If the type of the first subframe is a normal subframe, the length of the window corresponding to the first subframe information is a second preset value; and the first preset value is smaller than the second preset value.

Optionally, in a possible implementation manner of the third aspect, the subframe information of the first subframe includes: a number of downlink symbols in the first subframe;

If the number of the downlink symbols in the first subframe is smaller than the number of the first preset downlink symbols, the window length corresponding to the first subframe information is a third preset value;

If the number of the downlink symbols in the first subframe is greater than or equal to the number of the first preset downlink symbols, the window length corresponding to the first subframe information is a fourth preset value; The value is greater than the fourth preset value.

Optionally, in a possible implementation manner of the third aspect, the subframe information of the first subframe includes: a subframe type of the first subframe and a downlink symbol in the first subframe Quantity

If the type of the first subframe is a special subframe, and the number of downlink symbols in the first subframe is smaller than the number of second preset downlink symbols, the window length corresponding to the first subframe information is fifth. default value;

If the type of the first subframe is a special subframe, and the number of downlink symbols in the first subframe is greater than or equal to the number of the second preset downlink symbols, the window length corresponding to the first subframe information is The sixth preset value;

If the type of the first subframe is a normal subframe, the window length corresponding to the first subframe information is a seventh preset value;

The fifth preset value is greater than the sixth preset value, and the fifth preset value is less than or equal to the seventh preset value.

Optionally, in a possible implementation manner of the third aspect, before the determining, by the terminal device, the first window length according to the subframe information of the first subframe, the method further includes:

The terminal device acquires subframe information of the first subframe.

With the uplink signal transmission method provided by the third aspect, the terminal device may obtain the first indication information that is sent by the base station to indicate that the terminal device sends the uplink SRS on the first symbol of the first subframe. Subframe information of a subframe, so that the terminal device can determine, according to the subframe information of the first subframe, a contention window length that the terminal device performs channel idle evaluation, so that the terminal device can perform channel idle evaluation according to the contention window length. To improve the probability that the terminal device can complete the channel idle evaluation process before the first symbol of the first subframe starts, so that the terminal device can successfully send the first symbol of the first subframe when the channel idle evaluation succeeds. Uplink SRS improves the success rate of transmitting uplink SRS, thereby improving the resources of the uplink channel. Utilization, increasing the utilization of unlicensed spectrum resources.

Optionally, in a possible implementation manner of the third aspect, the terminal device performs channel idle evaluation according to the first window length, including:

Determining, by the terminal device, an initial value of a random backoff count of the channel idle evaluation according to the first window length;

The terminal device performs channel idle evaluation according to the random backoff count initial value.

In a fourth aspect, an embodiment of the present invention provides a terminal device, where the terminal device includes:

a receiving module, configured to receive first control information, second control information, and third control information that are sent by the network device, where the first control information indicates that the terminal device sends a first hybrid automatic repeat request acknowledgement on the first uplink channel a HARQ-ACK, the second control information instructing the terminal device to send a second HARQ-ACK on the second uplink channel;

a first determining module, configured to: when the third control information indicates that the terminal device sends the first uplink information on the first uplink channel, determine, according to the second control information, the third control information, The first uplink channel sends the first uplink information to the network device, and sends the second HARQ-ACK to the network device on the second uplink channel.

Optionally, in a possible implementation manner of the fourth aspect, the terminal device further includes:

a second determining module, configured to determine, according to the first control information, the second control information, when the third control information does not indicate that the terminal device sends the first uplink information on the first uplink channel Transmitting the first HARQ-ACK on the first uplink channel and the second HARQ-ACK on the second uplink channel.

Optionally, in a possible implementation manner of the fourth aspect, the first uplink channel is a short physical uplink control channel sPUCCH, the second uplink channel is an extended physical uplink control channel ePUCCH, or physical uplink sharing Channel PUSCH.

Optionally, in a possible implementation manner of the fourth aspect, the first uplink control information includes at least one of the following: a sounding reference signal SRS, and channel state information CSI.

Optionally, in a possible implementation manner of the fourth aspect, the first uplink channel is a first extended physical uplink control channel ePUCCH, the second uplink channel is a second ePUCCH, or a physical uplink shared channel PUSCH.

Optionally, in a possible implementation manner of the fourth aspect, the first uplink control information includes channel state information CSI.

Optionally, in a possible implementation manner of the fourth aspect, the second downlink data channel set corresponding to the second HARQ-ACK includes the first downlink data channel set corresponding to the first HARQ-ACK.

Optionally, in a possible implementation manner of the fourth aspect, the first uplink channel and the second uplink channel occupy different time domain resources.

Optionally, in a possible implementation manner of the fourth aspect, the first uplink channel and the second uplink channel are in the same uplink transmission on the unlicensed spectrum.

For the beneficial effects of the terminal device provided by the foregoing fourth aspect and the possible implementation manners of the fourth aspect, reference may be made to the beneficial effects brought by the first aspect and the possible implementation manners of the first aspect, and no longer Narration.

In a fifth aspect, an embodiment of the present invention provides a network device, where the network device includes:

a sending module, configured to send first control information, second control information, and third control information to the terminal device, where the first control information indicates that the terminal device sends a first hybrid automatic repeat request acknowledge HARQ on the first uplink channel - ACK, the second control information instructing the terminal device to send a second HARQ-ACK on the second uplink channel;

a first determining module, configured to: when the third control information indicates that the terminal device sends the first uplink information on the first uplink channel, determine, according to the second control information, the third control information, The first uplink channel receives the first uplink information sent by the terminal device, and receives the second HARQ-ACK sent by the terminal device on the second uplink channel.

Optionally, in a possible implementation manner of the fifth aspect, the network device further includes:

a second determining module, configured to determine, according to the first control information, the second control information, when the third control information does not indicate that the terminal device sends the first uplink information on the first uplink channel Receiving, by the first uplink channel, the first HARQ-ACK sent by the terminal device, and receiving, by the second uplink channel, the second HARQ-ACK sent by the terminal device.

Optionally, in a possible implementation manner of the fifth aspect, the first uplink channel is a short physical uplink control channel sPUCCH, the second uplink channel is an extended physical uplink control channel ePUCCH, or physical uplink sharing Channel PUSCH.

Optionally, in a possible implementation manner of the fifth aspect, the first uplink control information includes at least one of the following: a sounding reference signal SRS, and channel state information CSI.

Optionally, in a possible implementation manner of the fifth aspect, the first uplink channel is a first extended physical uplink control channel ePUCCH, the second uplink channel is a second ePUCCH, or a physical uplink shared channel PUSCH.

Optionally, in a possible implementation manner of the fifth aspect, the first uplink control information includes channel state information CSI.

Optionally, in a possible implementation manner of the fifth aspect, the second downlink data channel set corresponding to the second HARQ-ACK includes the first downlink data channel set corresponding to the first HARQ-ACK.

Optionally, in a possible implementation manner of the fifth aspect, the first uplink channel and the second uplink channel occupy different time domain resources.

Optionally, in a possible implementation manner of the fifth aspect, the first uplink channel and the second uplink channel are in the same uplink transmission on the unlicensed spectrum.

For the beneficial effects of the network device provided by the foregoing fifth aspect and the possible implementation manners of the fifth aspect, reference may be made to the beneficial effects brought by the foregoing first aspect and the possible implementation manners of the first aspect, and no longer Narration.

In a sixth aspect, an embodiment of the present invention provides a terminal device, where the terminal device includes:

An acquiring module, configured to obtain first indication information, where the first indication information is used to indicate that the terminal device sends an uplink sounding reference signal on the first symbol of the first subframe;

a determining module, configured to determine a first window length according to the subframe information of the first subframe; the first window length is a contention window length of the terminal device performing channel idle evaluation; and a child of the first subframe The frame information includes at least one of: a subframe type of the first subframe, and a downlink symbol number in the first subframe;

An execution module, configured to perform channel idle evaluation according to the first window length; the channel idle evaluation is used to determine whether the uplink sounding reference signal is allowed to be sent on the first symbol of the first subframe;

And a sending module, configured to send the uplink sounding reference signal on the first symbol of the first subframe according to the first indication information when the channel idle evaluation succeeds.

Optionally, in a possible implementation manner of the sixth aspect, the subframe type is a special subframe or a normal subframe.

Optionally, in a possible implementation manner of the sixth aspect, the determining module is specifically used The first window length is determined according to the subframe information of the first subframe and the mapping relationship between the preset subframe information and the window length.

Optionally, in a possible implementation manner of the sixth aspect, the subframe information of the first subframe includes: a subframe type of the first subframe;

Optionally, in a possible implementation manner of the sixth aspect, the subframe information of the first subframe includes: a number of downlink symbols in the first subframe;

Optionally, in a possible implementation manner of the sixth aspect, the subframe information of the first subframe includes: a subframe type of the first subframe and a downlink symbol in the first subframe Quantity

Optionally, in a possible implementation manner of the sixth aspect, the acquiring module is further configured to acquire, before the determining module determines the first window length according to the subframe information of the first subframe The subframe information of the first subframe is described.

Optionally, in a possible implementation manner of the sixth aspect, the executing module includes:

a determining unit, configured to determine an initial value of the random backoff count of the channel idle evaluation according to the first window length;

And an execution unit, configured to perform channel idle evaluation according to the random backoff count initial value.

For the beneficial effects of the terminal device provided by the foregoing sixth aspect and the possible implementation manners of the sixth aspect, reference may be made to the beneficial effects brought by the foregoing third aspect and the possible implementation manners of the third aspect, and no longer Narration.

A seventh aspect of the present invention provides a terminal device, where the terminal device includes:

a receiver, configured to receive first control information, second control information, and third control information sent by the network device, where the first control information indicates that the terminal device sends a first hybrid automatic repeat request acknowledgement on the first uplink channel a HARQ-ACK, the second control information instructing the terminal device to send a second HARQ-ACK on the second uplink channel;

a processor, configured to determine, according to the second control information, the third control information, a control transmitter when the third control information indicates that the terminal device sends the first uplink information on the first uplink channel Transmitting, by the first uplink channel, the first uplink information to the network device, and controlling the transmitter to send the second HARQ-ACK to the network device on the second uplink channel.

Optionally, in a possible implementation manner of the seventh aspect, the processor is further configured to: in the third control information, not indicating that the terminal device sends the first uplink information on the first uplink channel Determining, according to the first control information and the second control information, that the transmitter sends the first HARQ-ACK on the first uplink channel, and controls the transmitter to be in the second uplink. The channel transmits the second HARQ-ACK.

Optionally, in a possible implementation manner of the seventh aspect, the first uplink channel is a short physical uplink control channel sPUCCH, the second uplink channel is an extended physical uplink control channel ePUCCH, or physical uplink sharing Channel PUSCH.

Optionally, in a possible implementation manner of the seventh aspect, the first uplink control information includes at least one of the following: a sounding reference signal SRS, and channel state information CSI.

Optionally, in a possible implementation manner of the seventh aspect, the first uplink channel is a first extended physical uplink control channel ePUCCH, the second uplink channel is a second ePUCCH, or a physical uplink shared channel PUSCH.

Optionally, in a possible implementation manner of the seventh aspect, the first uplink control information includes channel state information CSI.

Optionally, in a possible implementation manner of the seventh aspect, the second downlink data channel set corresponding to the second HARQ-ACK includes the first downlink data channel set corresponding to the first HARQ-ACK.

Optionally, in a possible implementation manner of the seventh aspect, the first uplink channel and the second uplink channel occupy different time domain resources.

Optionally, in a possible implementation manner of the seventh aspect, the first uplink channel and the second uplink channel are in the same uplink transmission on the unlicensed spectrum.

The beneficial effects of the terminal device provided by the foregoing seventh aspect and the possible implementation manners of the seventh aspect can be seen in the beneficial effects of the first aspect and the possible implementation manners of the first aspect, and no longer Narration.

The eighth aspect of the present invention provides a network device, where the network device includes:

a transmitter, configured to send first control information, second control information, and third control information to the terminal device, where the first control information indicates that the terminal device sends the first hybrid automatic repeat request acknowledgement HARQ on the first uplink channel - ACK, the second control information instructing the terminal device to send a second HARQ-ACK on the second uplink channel;

a processor, configured to determine, according to the second control information, the third control information, a control receiver when the third control information indicates that the terminal device sends the first uplink information on the first uplink channel Receiving, by the first uplink channel, the first uplink information sent by the terminal device, and controlling, by the receiver, the second HARQ-ACK sent by the terminal device on the second uplink channel.

Optionally, in a possible implementation of the eighth aspect, the processor is further configured to: in the third control information, not indicating that the terminal device sends the first uplink information on the first uplink channel And determining, according to the first control information and the second control information, that the receiver receives the first HARQ-ACK sent by the terminal device on the first uplink channel, and controls the receiver. Receiving, by the second uplink channel, the second HARQ-ACK sent by the terminal device.

Optionally, in a possible implementation manner of the eighth aspect, the first uplink channel is a short physical uplink control channel sPUCCH, the second uplink channel is an extended physical uplink control channel ePUCCH, or physical uplink sharing Channel PUSCH.

Optionally, in a possible implementation manner of the eighth aspect, the first uplink control information includes at least one of the following: a sounding reference signal SRS, and channel state information CSI.

Optionally, in a possible implementation manner of the eighth aspect, the first uplink channel is a first extended physical uplink control channel ePUCCH, the second uplink channel is a second ePUCCH, or a physical uplink shared channel PUSCH.

Optionally, in a possible implementation manner of the eighth aspect, the first uplink control information includes channel state information CSI.

Optionally, in a possible implementation manner of the eighth aspect, the second downlink data channel set corresponding to the second HARQ-ACK includes the first downlink data channel set corresponding to the first HARQ-ACK.

Optionally, in a possible implementation manner of the eighth aspect, the first uplink channel and the second uplink channel occupy different time domain resources.

Optionally, in a possible implementation manner of the eighth aspect, the first uplink channel and the second uplink channel are in the same uplink transmission on the unlicensed spectrum.

For the beneficial effects of the network device provided by the foregoing eighth aspect and the possible implementation manners of the eighth aspect, reference may be made to the beneficial effects brought by the foregoing first aspect and the possible implementation manners of the first aspect, and no longer Narration.

A ninth aspect, the embodiment of the present invention provides a terminal device, where the terminal device includes:

a processor, configured to acquire first indication information, where the first indication information is used to indicate that the terminal device sends an uplink sounding reference signal on a first symbol of the first subframe;

The processor is further configured to determine a first window length according to the subframe information of the first subframe, and perform channel idle evaluation according to the first window length; the first window length is performed by the terminal device The content of the contention of the channel idle evaluation; the subframe information of the first subframe includes at least one of: a subframe type of the first subframe, a number of downlink symbols in the first subframe, and the channel The idle evaluation is used to determine whether the uplink sounding reference signal is allowed to be transmitted on the first symbol of the first subframe;

a transmitter, configured to: according to the first indication information, when the channel idle evaluation succeeds Transmitting the uplink sounding reference signal on the first symbol of the first subframe.

Optionally, in a possible implementation manner of the ninth aspect, the subframe type is a special subframe or a normal subframe.

Optionally, in a possible implementation manner of the ninth aspect, the processor is specifically configured to: according to the subframe information of the first subframe, and the mapping relationship between the preset subframe information and the window length Determining the length of the first window.

Optionally, in a possible implementation manner of the ninth aspect, the subframe information of the first subframe includes: a subframe type of the first subframe;

Optionally, in a possible implementation manner of the ninth aspect, the subframe information of the first subframe includes: a number of downlink symbols in the first subframe;

Optionally, in a possible implementation manner of the ninth aspect, the subframe information of the first subframe includes: a subframe type of the first subframe and a downlink symbol in the first subframe Quantity

Optionally, in a possible implementation manner of the ninth aspect, the processor is further configured to acquire the first sub-length before determining the first window length according to the subframe information of the first subframe Subframe information of the frame.

Optionally, in a possible implementation manner of the ninth aspect,

The processor is specifically configured to determine a random backoff count initial value of the channel idle evaluation according to the first window length, and perform channel idle evaluation according to the random backoff count initial value.

The ninth aspect and the terminal device provided by the possible implementation manners of the ninth aspect, the beneficial effects thereof can be seen in the beneficial effects brought by the foregoing third aspect and the possible implementation manners of the third aspect, and no longer Narration.

The uplink signal transmission method, the terminal device, and the network device provided by the embodiment of the present invention, the terminal device receives the first control information for instructing the terminal device to send the first HARQ-ACK on the first uplink channel, and receives the indication terminal. The device sends the second control information of the second HARQ-ACK on the second uplink channel, and when receiving the third control information indicating that the terminal device sends the first uplink information on the first uplink channel, the terminal device may be configured according to the second control information. The third control information determines that the first uplink information is sent on the first uplink channel and the second HARQ-ACK is sent on the second uplink channel, so as to effectively utilize the uplink control channel, the resource utilization of the uplink transmission is improved. If the uplink transmission is an uplink transmission of an unlicensed spectrum, the utilization of the unlicensed spectrum resource can be improved.

DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, a brief description of the drawings used in the embodiments or the prior art description will be briefly described below. Obviously, the drawings in the following description It is a certain embodiment of the present invention, and other drawings can be obtained from those skilled in the art without any inventive labor.

FIG. 1 is a signaling flowchart of Embodiment 1 of an uplink signal transmission method according to an embodiment of the present invention;

2 is a signaling flowchart of Embodiment 2 of an uplink signal transmission method according to an embodiment of the present invention;

FIG. 3 is a schematic flowchart of Embodiment 3 of an uplink signal transmission method according to an embodiment of the present disclosure;

FIG. 4 is a schematic structural diagram of Embodiment 1 of a terminal device according to an embodiment of the present disclosure;

FIG. 5 is a schematic structural diagram of Embodiment 2 of a terminal device according to an embodiment of the present disclosure;

FIG. 6 is a schematic structural diagram of Embodiment 1 of a network device according to an embodiment of the present disclosure;

FIG. 7 is a schematic structural diagram of Embodiment 2 of a network device according to an embodiment of the present disclosure;

FIG. 8 is a schematic structural diagram of Embodiment 3 of a terminal device according to an embodiment of the present disclosure;

FIG. 9 is a schematic structural diagram of Embodiment 4 of a terminal device according to an embodiment of the present disclosure;

FIG. 10 is a schematic structural diagram of Embodiment 5 of a terminal device according to an embodiment of the present disclosure;

FIG. 11 is a schematic structural diagram of Embodiment 3 of a network device according to an embodiment of the present disclosure;

FIG. 12 is a schematic structural diagram of Embodiment 6 of a terminal device according to an embodiment of the present disclosure;

FIG. 13 is a structural block diagram of a terminal device when the terminal device is a mobile phone according to an embodiment of the present invention.

detailed description

The technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. It is a partial embodiment of the invention, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

The terminal device according to the embodiment of the present invention may be a device that provides voice and/or data connectivity to a user, a handheld device with a wireless connection function, or other processing device connected to a wireless modem. The wireless terminal can communicate with one or more core networks via a Radio Access Network (RAN), which can be a mobile terminal, such as a mobile phone (or "cellular" phone) and a computer with a mobile terminal. For example, it may be a portable, pocket, handheld, computer built-in or in-vehicle mobile device that exchanges language and/or data with a wireless access network. For example, personal communication service (PCS, Personal Communication Service) telephone, cordless telephone, Session Initiation Protocol (SIP) telephone, Wireless Local Loop (WLL) station, Personal Digital Assistant (PDA, Personal Digital Assistant), etc. . A wireless terminal may also be called a system, a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, an access point, or an access point. Remote Terminal (Remote Terminal), Access Terminal (Access) Terminal), User Terminal, User Agent, User Device, or User Equipment.

The network device involved in the embodiments of the present invention may be a base station, or an access point, or may refer to a device in the access network that communicates with the wireless terminal through one or more sectors on the air interface. The base station can be used to convert the received air frame to the IP packet as a router between the wireless terminal and the rest of the access network, wherein the remainder of the access network can include an Internet Protocol (IP) network. The base station can also coordinate attribute management of the air interface. For example, the base station may be a base station (BTS, Base Transceiver Station) in GSM or CDMA, or may be a base station (NodeB) in WCDMA, or may be an evolved base station (eNB or e-NodeB, evolutional Node B) in LTE. This application is not limited.

The uplink signal transmission method provided by the embodiment of the present invention is applicable to a scenario in which a terminal device in any wireless communication system sends an uplink signal on an unlicensed spectrum. The wireless communication system referred to here may be, for example, a 2G communication system, a 3G communication system, an LTE communication system, a 4G communication system, a 5G communication system, or the like.

For example, the terminal device in the LTE system sends an uplink signal on the unlicensed spectrum. Specifically,

Based on the eLAA, the MulteFire standard further implements the uplink and downlink transmission of the LTE system completely in the unlicensed spectrum, so that the uplink and downlink transmissions are no longer dependent on the assistance of the licensed spectrum. In addition, in order to better utilize the channel resources of the unlicensed spectrum, the MulteFire supports the terminal device to send the extended physical uplink control channel (ePUCCH) to the base station in the 1ms subframe. When the symbol of the tail subframe used by the base station to transmit the downlink transmission is less than 10, the short physical uplink control channel (sPUCCH, short Physical Uplink Control Channel) is transmitted to the base station by using the last 4 symbols of the tail subframe.

The sPUCCH can carry the SRS, the physical random access channel (Physical Random Access Channel, PRACH), the scheduling request (Scheduling Request, SR), and the Hybrid Automatic Repeat Request Acknowledge (abbreviation). : HARQ-ACK), one or more uplink control information in channel state information (CSI). In a specific implementation, the base station may send the one or more uplink control information in the sPUCCH by using the CPDCCH configuration terminal device. The base station may notify the terminal device by using an explicit CPDCCH control bit, or may cause the terminal device to determine whether to send the number according to the number of the tail subframe symbols indicated by the CPDCCH by using an implicit notification manner. Send HARQ-ACK. Since the control signaling included in the CPDCCH is cell-specific control signaling, if the terminal device is configured to send the one or more uplink control information in the CPDCCH, all the terminal devices that receive the CPDCCH transmit the foregoing according to the indication of the CPDCCH. Or multiple uplink control information.

The ePUCCH may carry one or more uplink control information such as PRACH, SR, HARQ-ACK, and CSI. In a specific implementation, the base station may send the one or more uplink control information in the ePUCCH by using the CPDCCH configuration terminal device, and may also instruct the terminal device to send the one or more uplink control information by using the uplink grant UL grant.

Since both the sPUCCH and the ePUCCH support the HARQ-ACK feedback, and the ePUCCH can be triggered by the CPDCCH or the uplink grant UL grant, the base station may instruct the terminal device to feed back the HARQ-ACK in the sPUCCH, and also instruct the terminal device to The HARQ-ACK is fed back in the ePUCCH in the same uplink transmission, so that the terminal may feed back the HARQ-ACK in both the sPUCCH and the ePUCCH in one uplink transmission, that is, the HARQ-ACK is fed back twice in a short time. Meanwhile, in the same uplink transmission, the downlink data channel set corresponding to the HARQ-ACK fed back in the ePUCCH includes the downlink data channel set corresponding to the HARQ-ACK fed back by the sPUCCH, and therefore, how the terminal equipment is in the same uplink transmission sPUCCH and ePUCCH The feedback of HARQ-ACK in order to effectively utilize the resources of the uplink control channel is an urgent problem to be solved.

Therefore, in the uplink signal transmission method provided by the embodiment of the present invention, when the terminal device is configured with two uplink channels that can carry the HARQ-ACK in the same uplink transmission, the terminal device may send other uplink control information according to the received indication. The third control information, on one of the uplink channels of the same uplink transmission, abandons the transmission of the HARQ-ACK, but sends other uplink control information, thereby achieving the purpose of effectively utilizing the channel resources and avoiding waste of resources.

The technical solutions of the present invention will be described in detail below with specific embodiments. The following specific embodiments may be combined with each other, and the same or similar concepts or processes may not be described in some embodiments.

FIG. 1 is a signaling flowchart of Embodiment 1 of an uplink signal transmission method according to an embodiment of the present invention. The first embodiment relates to how the terminal device determines, according to the second control information and the third control information, the first uplink channel after receiving the first control information, the second control information, and the third control information that are sent by the network device. Sending the first uplink information to the network device and the second uplink channel to the network The specific process in which the device sends the second HARQ-ACK. As shown in Figure 1, the method includes:

S101. The network device sends first control information, second control information, and third control information to the terminal device.

The first control information indicates that the terminal device sends a first hybrid automatic repeat request acknowledgement HARQ-ACK on the first uplink channel, and the second control information instructs the terminal device to send the second HARQ-ACK on the second uplink channel.

Specifically, in this embodiment, the network device may configure, by using the first control information and the second control information, two different uplink channels that can carry the HARQ-ACK, that is, the first uplink channel and the second uplink, for the same terminal device. channel. The first uplink channel and the second uplink channel may be, for example, as shown in Table 1 below:

Table 1

编号Numbering	第一上行信道First uplink channel	第二上行信道Second upstream channel
11	sPUCCHsPUCCH	ePUCCHePUCCH
22	sPUCCHsPUCCH	PUSCHPUSCH
33	第一ePUCCHFirst ePUCCH	第二ePUCCHSecond ePUCCH
44	ePUCCHePUCCH	PUSCHPUSCH

The first control information may be explicit control information, and may also be implicit control information. The implicit control information refers to the first control information and does not directly indicate that the terminal device is in the first uplink channel. Sending the first HARQ-ACK, but implicitly instructing the terminal device to send the first HARQ-ACK on the first uplink channel by indicating other related indication content. In a specific implementation, the first control information may include the control information carried in the RRC (Radio Resource Control) signaling and the control information carried in the PDCCH notification signaling.

Taking the first uplink channel as an example of the sPUCCH, the foregoing first control information may be classified into the following five cases:

The first case: the first control information includes cell-specific signaling information carried in the PDCCH, and the foregoing cell-specific signaling may be for all active terminal devices in the cell (for example, active UE, or RRC_connected UE) The signaling information may indicate that all activated terminal devices including the terminal device transmit the first HARQ-ACK on the first uplink channel. In a specific implementation, the foregoing first control information includes control information carried in the CPDCCH. At this time, the first The control information can be displayed control information or implicit control information. For example, the foregoing first control information may be that one of the CPDCCHs specifically indicates whether to send the identifier of the first HARQ-ACK on the first uplink channel, so that the first control information may be displayed indicating that the terminal device is in the first uplink channel. Sending a first HARQ-ACK, the identifier bit may be, for example, 1 bit. When the bit is 1, the terminal device is instructed to send the first HARQ-ACK on the first uplink channel, or when the bit is 0, The terminal device sends the first HARQ-ACK on the first uplink channel, which may be specifically set according to a scenario. The foregoing first control information may also be control information indicating the number of downlink tail subframe symbols in the CPDCCH, so that the first control information may implicitly indicate that the terminal device sends the first uplink channel according to the number of downlink tail subframe symbols. HARQ-ACK. For example, when the number of downlink subframe symbols is indicated to be less than a predefined value (for example, 9 or 10), the terminal device is instructed to send the first HARQ-ACK or the like on the first uplink channel.

The second case: the first control information includes time domain resource information (explicit control information) for transmitting HARQ-ACK configured by the network device carried in the RRC signaling for the terminal device. In a specific implementation, the RRC signaling may be configured by the network device to configure the terminal device to send the HARQ-ACK time domain resource, and then instruct the terminal device to send the first HARQ-ACK and the like on the first uplink channel.

In the third case, the first control information includes one of user-specific signaling information, group-specific signaling information, and the like carried in the PDCCH. The specific signaling information may indicate that the terminal device transmits the first HARQ-ACK on the first uplink channel. The user-specific signaling information mentioned above may be signaling information for a specific terminal device, and the group-specific signaling information may be for a specific group of terminal devices (including at least two Signaling information of the terminal device). In a specific implementation, the foregoing specific signaling information may be included in a DL grant or a UL grant.

The fourth case: the first control information may include: control information carried in the CPDCCH, and resource information for transmitting the HARQ-ACK configured by the network device carried in the RRC signaling for the terminal device (indicating the frequency domain/code domain/ At least one of the spatial domains, or the network information included in the specific signaling information carried in the PDCCH is the HARQ-ACK resource information (one of the frequency domain/code domain/space domain configured for the terminal device) a plurality of) to instruct the terminal device to send the first HARQ-ACK on the first uplink channel. That is, only the RRC signaling or the specific signaling information carried in the PDCCH carries the HARQ-ACK resource sent by the network device for the terminal device on the sPUCCH, and the control information in the CPDCCH also indicates the terminal device. Send The HARQ-ACK can instruct the terminal device to send the first HARQ-ACK on the first uplink channel. In a specific implementation, the specific signaling information carried in the PDCCH may be included in the DL grant.

The fifth case: the first control information may include: control information carried in the CPDCCH, and available resource information of the plurality of HARQ-ACKs that are configured by the network device carried in the RRC signaling for the terminal device (indicating the frequency domain/ The at least one of the code domain/the spatial domain, the specific signaling information carried in the PDCCH, instructing the terminal device to use the available resource in the RRC signaling to send the HARQ-ACK, to instruct the terminal device to send the first uplink channel. A HARQ-ACK. That is, only the RRC signaling indicates a plurality of available resources, and the specific signaling information carried in the PDCCH indicates which available resource is used, and the control information in the CPDCCH also indicates that the terminal device sends the HARQ-ACK. Instructing the terminal device to send the first HARQ-ACK on the first uplink channel. In a specific implementation, the specific signaling information carried in the PDCCH may include an Acknowledgment Resource Indicator (AR) in the DL grant, which is used to indicate which available resource in the RRC signaling is used by the terminal device to send the HARQ. -ACK.

For the above five cases, the first control information further includes signaling information that is carried in the PDCCH to indicate that the downlink data resource is allocated to the terminal device, and the user receives the signaling notification information, and confirms that the network device sends the The first HARQ-ACK is sent only after the downlink data. In a specific implementation, the user-specific signaling information is included in the DL grant.

Taking the first uplink channel as an example of the ePUCCH, the first control information may be classified into the following five situations:

In the first case, the first control information may be a flag indicating whether to send the first HARQ-ACK on the first uplink channel, so that the first control information can be displayed to indicate that the terminal device is sent on the first uplink channel. First HARQ-ACK. The identifier bit may be a cell-specific signaling information carried in the PDCCH. For specific implementation, the identifier bit may be, for example, 1 bit. When the bit is 1, the terminal device is instructed to send the first uplink channel. A HARQ-ACK, or when the bit is 0, instructs the terminal device to send the first HARQ-ACK on the first uplink channel, which may be specifically set according to a scenario. Optionally, the foregoing first control information may further indicate, by using one of the CPDCCHs, whether to send an identifier for transmitting the first HARQ-ACK on the first uplink channel, and the like.

For the second case, refer to the description of the second case of the first control information when the first uplink channel is the sPUCCH, and details are not described herein again.

In the third case, the first control information includes one of user-specific signaling information, group-specific signaling information, and the like carried in the PDCCH. The specific signaling information may indicate that the terminal device transmits the first HARQ-ACK on the first uplink channel. Specifically, the first control information includes an uplink grant UL grant notification signaling carried in the PDCCH, and if the second uplink channel is an ePUCCH or a PUSCH indicated by the UL grant, the terminal device may determine that the terminal device is configured according to the signaling included in the UL grant. The HARQ-ACK is transmitted on the uplink resource of the corresponding ePUCCH or PUSCH.

For the fourth case and the fifth case, refer to the description of the fourth case and the fifth case of the first control information when the first uplink channel is the sPUCCH, and details are not described herein again.

For the above five cases, the first control information may further include signaling information that is carried in the PDCCH to indicate that the downlink data resource is allocated to the terminal device, and the user receives the signaling notification information, and confirms that the network device sends the The downlink data is sent before the first HARQ-ACK is sent. In a specific implementation, the user-specific signaling information is included in the DL grant.

For a description of the second control information, reference may be made to the specific description of the first control information when the first uplink channel is the ePUCCH, and details are not described herein again. Optionally, if the first uplink channel is an ePUCCH, and the first control information is control information carried in the CPDCCH, the second control channel may be, for example, control information carried in the UL grant.

The foregoing third control information is used to indicate whether the terminal device sends the first uplink information on the first uplink channel. The first uplink information may be specifically determined according to the first uplink channel. For example, if the first uplink channel is an sPUCCH, the first uplink information may include one or more of SRS, PRACH, SR, CSI, and the like. . If the first uplink channel is an ePUCCH, the first uplink information may include one or more of PRACH, SR, CSI, and the like. For a description of the third control information, reference may be made to the specific description of the first control information when the first uplink channel is the sPUCCH, and details are not described herein again. The third control information may be carried in the same signaling as the first control information, or may be carried in different signaling and sent to the terminal, and may be determined according to an actual usage scenario.

S102. The terminal device receives the first control information, the second control information, and the third control information.

S103. If the third control information indicates that the terminal device sends the first uplink information on the first uplink channel, the terminal device determines, according to the second control information and the third control information, that the first uplink information is sent to the network device on the first uplink channel. Sending a second to the network device on the second uplink channel HARQ-ACK.

Specifically, in this embodiment, the downlink data channel set corresponding to the second HARQ-ACK includes a downlink data channel set corresponding to the first HARQ-ACK. The second HARQ-ACK corresponding to the second downlink data channel set refers to: the second HARQ-ACK includes a receiving state for the second downlink data channel set; considering that the HARQ-ACK of the second uplink channel bearer may include at least The receiving state of a downlink data channel, so the second downlink data channel set includes at least one downlink data channel, each downlink data channel corresponds to one HARQ process, and different downlink data channels correspond to different HARQ processes. The first HARQ-ACK corresponding to the first downlink data channel set means that the first HARQ-ACK includes a receiving state for the first downlink data channel set; similarly, the first downlink data channel set includes at least one downlink data channel. Each downlink data channel corresponds to one HARQ process, and different downlink data channels correspond to different HARQ processes. Considering that the terminal device feedback HARQ-ACK is based on a bit map, that is, the terminal device sets the receiving state for all HARQ processes in each HARQ-ACK, but the first HARQ only corresponds to the downlink within one time range. a data channel, such as a time window downlink data channel that is closer to the first uplink channel, and does not include a downlink data channel that is not within its corresponding time range; similarly, the second HARQ is only corresponding to the second uplink channel. The downlink data channel does not include a downlink data channel that is not within its corresponding time range.

Considering that the first uplink channel and the second uplink channel may be located on the uplink resources that are closer to each other, the first downlink data channel set and the second downlink data channel set may include overlapping downlink data channels, that is, the same downlink data channel may be It is included in both the first downlink data channel set and the second downlink data channel set. In order to obtain the diversity gain of the network device receiving the HARQ-ACK, when the same downlink data channel appears in the first downlink data channel set and the second downlink data channel set, and the terminal device sends the HARQ on the first uplink channel and the second uplink channel, -ACK (the first HARQ and the second HARQ are sent separately), the receiving state of the HARQ information for the downlink data channel is the same, so that the network device can receive the correctly received uplink even if one of the uplink channels is lost. The HARQ-ACK information of the downlink data channel is obtained in the channel.

The second downlink data channel set corresponding to the second HARQ-ACK includes the first downlink data channel set corresponding to the first HARQ-ACK, where all data channels in the first downlink data channel set appear in the second downlink data. In the channel set. In this case, if the network device can receive the second HARQ, the network device can obtain the receiving status of all the downlink data channels, and does not need to receive the first one. In this case, when the terminal device receives the third control information and the third control information indicates that the terminal device sends the first uplink control information, the terminal device may discard the first HARQ and send the first uplink control information.

Optionally, the receiving status of the data channel is an Acknowledgement (ACK) or a Negative Acknowledgement (NACK). Optionally, the receiving status of the data channel is ACK, NACK, or Discontinuous Transmission (DTX). For example, if the terminal device determines that a certain data channel is received correctly, the corresponding receiving state is ACK; or, if the terminal device determines that the data channel receives an error, the receiving state is NACK; or the terminal device determines that the data channel is not received, The receiving status is DTX; or, if the terminal device determines that the data channel is not received, the receiving status is NACK, that is, the NACK indicates that the data channel is not received.

In this way, when the third control information is used to indicate that the terminal device sends the first uplink information on the first uplink channel, the terminal device determines, according to the second control information, the third control information, that the first uplink is sent on the first uplink channel. Information, transmitting a second HARQ-ACK on the second uplink channel. That is, the terminal device abandons sending the first HARQ-ACK on the first uplink channel, but transmits the first uplink information. The downlink data channel set corresponding to the second HARQ-ACK includes the downlink data channel set corresponding to the first HARQ-ACK. Therefore, in this manner, the terminal device can still send the first HARQ-ACK including the first HARQ-ACK to the network device. The method of the second HARQ-ACK is to enable the network device to still obtain the information of the first HARQ-ACK. At the same time, the first uplink information can be sent through the first uplink channel, and the transmission opportunity of the first uplink information is increased. The purpose of effectively utilizing the uplink control channel improves the resource utilization of the uplink transmission.

The first uplink information is an SRS, and the first uplink channel is an sPUCCH. In the prior art, if the network device configures the terminal device to send the first HARQ-ACK and the SRS on the sPUCCH by using the first control information and the third control information. And configuring, by using the second control information, the terminal device to send the second HARQ-ACK on the sPUCCH. Since the priority of the HARQ-ACK is high, the terminal device sends the first HARQ-ACK instead of transmitting the SRS in the sPUCCH, and transmits the second HARQ-ACK on the second uplink channel. At this time, since the sPUCCH and the second uplink channel are channels in the same uplink transmission, that is, the downlink data channel set corresponding to the second HARQ-ACK includes the downlink data channel set corresponding to the first HARQ-ACK, therefore, in the prior art, The method of transmitting the first HARQ-ACK in the sPUCCH causes waste of resources of the uplink control channel. Embodiment of the present invention The uplink signal transmission method is provided, if the network device configures the terminal device to send the first HARQ-ACK and the SRS on the sPUCCH by using the first control information and the third control information, and configures the terminal device to send the second message on the sPUCCH by using the second control information. The HARQ-ACK, the terminal device sends the SRS on the sPUCCH, and discards the first HARQ-ACK, and sends the second HARQ-ACK on the second uplink channel. Since the downlink data channel set corresponding to the second HARQ-ACK includes the downlink data channel set corresponding to the first HARQ-ACK, the network device may learn the first HARQ-ACK by receiving the second HARQ-ACK, and may also The SRS is received through the sPUCCH, which increases the transmission opportunity of the SRS, improves the channel detection, achieves the purpose of effectively utilizing the uplink control channel, and improves the resource utilization of the uplink transmission. If the uplink transmission is an uplink transmission of an unlicensed spectrum, the utilization of the unlicensed spectrum resource can be improved.

The first uplink information is used as the CSI/SR, and the first uplink channel is the sPUCCH or the ePUCCH. In the prior art, if the network device configures the terminal device to send on the first uplink channel by using the first control information and the third control information. The first HARQ-ACK and the CSI/SR configure the terminal device to send the second HARQ-ACK on the first uplink channel by using the second control information. At this time, if the network device high-layer signaling configuration does not allow simultaneous transmission of CSI/SR and HARQ-ACK, since the priority of the HARQ-ACK is high, the terminal device will abandon the CSI/SR on the first uplink channel but send the first. HARQ-ACK, transmitting a second HARQ-ACK on the second uplink channel. In this case, since the first uplink channel and the second uplink channel are channels in the same uplink transmission, that is, the downlink data channel set corresponding to the second HARQ-ACK includes the downlink data channel set corresponding to the first HARQ-ACK, In the technology, the manner of transmitting the first HARQ-ACK on the first uplink channel causes waste of resources of the uplink control channel. In the uplink signal transmission method provided by the embodiment of the present invention, if the network device configures the terminal device to send the first HARQ-ACK and the CSI/SR on the first uplink channel by using the first control information and the third control information, the second control is performed. The information configuration terminal device sends the second HARQ-ACK on the first uplink channel, and the terminal device sends the CSI/SR on the first uplink channel, and discards the first HARQ-ACK, and sends the second HARQ-ACK on the second uplink channel. . Since the downlink data channel set corresponding to the second HARQ-ACK includes the downlink data channel set corresponding to the first HARQ-ACK, the network device may learn the first HARQ-ACK by receiving the second HARQ-ACK, and further The CSI/SR can be received through the first uplink channel, and the CSI/SR transmission opportunity is increased, and the purpose of effectively utilizing the uplink control channel is achieved, and the resource utilization of the uplink transmission is improved. If the uplink transmission is an uplink transmission of an unlicensed spectrum, the unlicensed spectrum can be improved. Utilization of resources.

The first uplink information is used as the CSI/SR, and the first uplink channel is the sPUCCH or the ePUCCH. In the prior art, if the network device configures the terminal device to send on the first uplink channel by using the first control information and the third control information. The first HARQ-ACK and the CSI/SR configure the terminal device to send the second HARQ-ACK on the first uplink channel by using the second control information. At this time, if the network device higher layer signaling configuration allows simultaneous transmission of CSI/SR and HARQ-ACK, the terminal device jointly encodes the CSI/SR and the first HARQ-ACK and transmits the first uplink channel on the second uplink. The channel transmits a second HARQ-ACK. At this time, since the CSI/SR and the first HARQ-ACK are jointly coded, the two signals simultaneously have more bit numbers than the CSI/SR only, resulting in an increase in the code rate and a decrease in the decoding performance. In the prior art, the manner of transmitting CSI/SR and the first HARQ-ACK on the first uplink channel increases the probability of transmission failure of the CSI/SR and the first HARQ-ACK, and causes the simultaneous transmission. A HARQ-ACK and a second HARQ-ACK result in a waste of resources of the uplink control channel. In the uplink signal transmission method provided by the embodiment of the present invention, if the network device configures the terminal device to send the first HARQ-ACK and the CSI/SR on the first uplink channel by using the first control information and the third control information, the second control is performed. The information configuration terminal device sends the second HARQ-ACK on the first uplink channel, and the terminal device sends the CSI/SR on the first uplink channel, and discards the first HARQ-ACK, and sends the second HARQ-ACK on the second uplink channel. . Since the downlink data channel set corresponding to the second HARQ-ACK includes the downlink data channel set corresponding to the first HARQ-ACK, the network device may receive the first HARQ-ACK by receiving the second HARQ-ACK, The bit information of the HARQ-ACK is removed on the first uplink channel, the number of valid bits of the CSI/SR is reduced, the coding performance is improved, the transmission performance of the CSI/SR is increased, and the purpose of effectively utilizing the uplink control channel is achieved. Increased resource utilization for upstream transmissions. If the uplink transmission is an uplink transmission of an unlicensed spectrum, the utilization of the unlicensed spectrum resource can be improved.

The first uplink information is a PRACH, and the first uplink channel is an sPUCCH or an ePUCCH. In the prior art, if the network device configures the terminal device to send the first uplink channel on the first uplink channel by using the first control information and the third control information. The HARQ-ACK and the PRACH configure the terminal device to send the second HARQ-ACK on the first uplink channel by using the second control information. At this time, since the priority of the HARQ-ACK is high, the terminal device sends the first HARQ-ACK instead of transmitting the PRACH on the first uplink channel, and transmits the second HARQ-ACK on the second uplink channel. at this time, The first uplink channel and the second uplink channel are channels in the same uplink transmission, that is, the downlink data channel set corresponding to the second HARQ-ACK includes the downlink data channel set corresponding to the first HARQ-ACK, and therefore, in the prior art, The method of transmitting the first HARQ-ACK on the first uplink channel causes waste of resources of the uplink control channel. In the uplink signal transmission method provided by the embodiment of the present invention, if the network device configures the terminal device to send the first HARQ-ACK and the PRACH on the first uplink channel by using the first control information and the third control information, the second control information is configured by using the second control information. The terminal device sends the second HARQ-ACK on the first uplink channel, and the terminal device sends the PRACH on the first uplink channel, and discards the first HARQ-ACK, and sends the second HARQ-ACK on the second uplink channel. Since the downlink data channel set corresponding to the second HARQ-ACK includes the downlink data channel set corresponding to the first HARQ-ACK, the network device may receive the first HARQ-ACK by receiving the second HARQ-ACK, and further The PRACH can be received through the first uplink channel, which increases the transmission opportunity of the PRACH, achieves the purpose of effectively utilizing the uplink control channel, and improves the resource utilization of the uplink transmission. If the uplink transmission is an uplink transmission of an unlicensed spectrum, the utilization of the unlicensed spectrum resource can be improved.

It should be noted that although the above example uses the first uplink information to include one type of information as an example, the uplink signal transmission method provided by the embodiment of the present invention is described, but those skilled in the art may understand that the foregoing first uplink is used. The information may also include a plurality of information, and the specific implementation manner and technical effects thereof are similar to the above examples, and details are not described herein again.

S104. If the third control information indicates that the terminal device sends the first uplink information on the first uplink channel, the base station determines, according to the second control information and the third control information, the first uplink information that is sent by the terminal device on the first uplink channel. And receiving, by the second uplink channel, a second HARQ-ACK sent by the terminal device.

For the description of the foregoing S104, refer to the detailed description of the above S103, and the details are not described herein again.

It should be noted that the executions of the foregoing S103 and S104 are in no particular order. For example, S103 may be executed first and then S104 may be executed. S104 may be executed first and then S103 may be performed, and S103 and S104 may be simultaneously executed.

S105. The terminal device sends the first uplink information to the network device on the first uplink channel, and sends the second HARQ-ACK to the network device on the second uplink channel.

The terminal device sends the first uplink information to the network device on the first uplink channel and the second HARQ-ACK to the network device on the second uplink channel. For details, refer to the related art, and details are not described herein.

S106. The network device receives the first uplink information sent by the terminal device on the first uplink channel, and receives the second HARQ-ACK sent by the terminal device on the second uplink channel.

The network device receives the first uplink information sent by the terminal device on the first uplink channel and the second HARQ-ACK sent by the terminal device on the second uplink channel. For details, refer to the prior art. Narration.

According to the uplink signal transmission method provided by the embodiment of the present invention, the terminal device receives the first control information for indicating that the terminal device sends the first HARQ-ACK on the first uplink channel, and receives the indication that the terminal device is in the second uplink channel. Sending the second control information of the second HARQ-ACK, and receiving the third control information indicating that the terminal device sends the first uplink information on the first uplink channel, the terminal device may be configured according to the second control information and the third control information, Determining that the first uplink information is sent on the first uplink channel and the second HARQ-ACK is sent on the second uplink channel, so as to effectively utilize the uplink control channel, the resource utilization of the uplink transmission is improved. If the uplink transmission is an uplink transmission of an unlicensed spectrum, the utilization of the unlicensed spectrum resource can be improved.

FIG. 2 is a signaling flowchart of Embodiment 2 of an uplink signal transmission method according to an embodiment of the present invention. The second embodiment relates to how, after acquiring the first control information, the second control information, and the third control information, the terminal device determines, according to the first control information and the second control information, that the first HARQ is sent on the first uplink channel. - ACK, a specific process of transmitting a second HARQ-ACK on the second uplink channel. As shown in FIG. 2, the method may further include:

S201. The network device sends the first control information, the second control information, and the third control information to the terminal device.

S202. The terminal device receives the first control information, the second control information, and the third control information.

For details of the foregoing descriptions of S201 and S202, refer to the description of the foregoing S101-S102, and details are not described herein again.

S203. If the third control information does not indicate that the terminal device sends the first uplink information on the first uplink channel, the terminal device determines, according to the first control information and the second control information, that the first uplink channel sends the first HARQ to the network device. ACK, sending a second to the network device on the second uplink channel HARQ-ACK.

Specifically, when the third control information is used to indicate that the terminal device does not send the first uplink information on the first uplink channel, the terminal device determines, according to the first control information, the second control information, that the first uplink channel is sent. A HARQ-ACK, transmitting a second HARQ-ACK on the second uplink channel. At this time, since the third control information does not indicate that the terminal device sends the first uplink information on the first uplink channel, the terminal device may send the first HARQ-ACK on the first uplink channel, which improves the resource utilization of the uplink transmission. On the basis of the above, the transmission reliability of the HARQ-ACK is improved, thereby increasing the number of times the terminal device transmits the HARQ-ACK, thereby increasing the probability that the network device receives the HARQ-ACK.

S204. If the third control information does not indicate that the terminal device sends the first uplink information on the first uplink channel, the network device determines, according to the first control information and the second control information, the first HARQ sent by the terminal device on the first uplink channel. - ACK, receiving the second HARQ-ACK sent by the terminal device on the second uplink channel.

For the description of the foregoing S204, refer to the detailed description of the foregoing S203, and the details are not described herein again.

It should be noted that the executions of the foregoing S203 and S204 are in no particular order. For example, S203 may be executed first and then S204 may be executed. S204 may be performed first and then S203 may be performed, and S203 and S204 may be simultaneously executed.

S205. The terminal device sends a first HARQ-ACK to the network device on the first uplink channel, and sends a second HARQ-ACK to the network device on the second uplink channel.

The terminal device sends the first HARQ-ACK to the network device on the first uplink channel, and sends the second HARQ-ACK to the network device on the second uplink channel. For details, refer to the prior art, and details are not described herein.

S206. The network device receives the first HARQ-ACK sent by the terminal device on the first uplink channel, and receives the second HARQ-ACK sent by the terminal device on the second uplink channel.

The network device can receive the first HARQ-ACK sent by the terminal device on the first uplink channel and the second HARQ-ACK sent by the terminal device on the second uplink channel. For details, refer to the related art, and details are not described herein.

The uplink signal transmission method provided by the embodiment of the present invention, the terminal device receives the indication terminal The device sends first control information of the first HARQ-ACK on the first uplink channel, receives second control information for instructing the terminal device to send the second HARQ-ACK on the second uplink channel, and receives the indication that the terminal device is When the first uplink channel does not send the third control information of the first uplink information, the terminal device may determine, according to the first control information and the second control information, that the first HARQ-ACK is sent on the first uplink channel, and the first HARQ-ACK is sent on the second uplink channel. The second HARQ-ACK improves the transmission reliability of the HARQ-ACK on the basis of improving the resource utilization of the uplink transmission, thereby improving the number of times the terminal device transmits the HARQ-ACK, thereby improving the HARQ received by the network device. The probability of ACK.

Optionally, the first uplink channel and the second uplink channel in the foregoing embodiment may be channels in the same uplink transmission on the unlicensed spectrum, for example, the first uplink channel and the second uplink channel may be unlicensed spectrum. The channel in the same uplink transmission burst, and the like. Optionally, the first uplink channel and the second uplink channel may occupy different time domain resources in the same uplink transmission, and may also occupy the same time domain resource in the same uplink transmission.

The foregoing uplink transmission may specifically be at least one temporally consecutive or discontinuous uplink subframe configured by the network device. The uplink subframe referred to herein may be a complete subframe including 14 symbols, or may be a partial subframe smaller than 14 symbols, for example, a subframe transmitting sPUCCH or an ePUCCH transmitting only 12 or 13 uplink symbols. PUSCH uplink subframe. It should be noted that the above-mentioned temporally consecutive uplink subframes mean that the at least one uplink subframe is continuous from the perspective of the network device, and may be discontinuous for a certain terminal device. For example, the network device allocates consecutive uplink subframes #1, #2, #3, and #4 to the terminal device 1, the terminal device 2, the terminal device 3, and the terminal device 1 as uplink control channels or uplink traffic channels, respectively. For the terminal device 1, although the uplink subframes #2 and #3 are not allocated to the terminal device 1, the uplink subframes #1 and #4 used by the terminal device 1 are intermittent, but #1 and #4 are in the The network device side is continuous, so it is still considered that the subframes #1 and #4 used by the terminal device are subframes in the same uplink transmission. The above-mentioned temporally discontinuous uplink subframes means that there are at least one discontinuous uplink subframe from the perspective of the network device, but there are no downlink subframes between the discontinuous uplink subframes, for example, for consecutive Subframes #1, #2, #3, #4, the network device assigns #1, #2, #4 to the terminal device 1, the terminal device 2, and the terminal device 1 as the uplink control channel or the uplink traffic channel, respectively, while retaining #3 is idle, so it is still considered that the subframes #1 and #4 used by the terminal device are subframes in the same uplink transmission. In a specific implementation, the terminal device may indicate, by using the network device, whether the configuration is in the same uplink transmission. For example, the terminal device may determine the uplink time by using the UL burst duration of the uplink transmission indicated by the CPDCCH transmitted by the network device, or the remaining channel occupation time (RCOT), to determine the uplink time. Whether the channel and the second uplink channel are in the same uplink transmission.

Optionally, the sPUCCH includes an uplink control channel whose occupied time domain resource is shorter than the shortest time domain resource length occupied by the ePUCCH, for example, the time domain resource occupied by the sPUCCH is 4 SC-FDMA (Single Carrier-Frequency Division Multiple Access) symbols; ePUCCH The occupied time domain resources are 12 or 13 or 14 SC-FDMA symbols, and the shortest time domain resource length is 12 SC-FDMA symbols.

Optionally, the sPUCCH includes an uplink control channel that shares the same subframe as the downlink sub-frame, where the downlink sub-frame is earlier than the sPUCCH, the ePUCCH includes an uplink control channel that does not share the same sub-frame with the downlink, and the downlink sub-frame includes one sub-frame. The downlink transmission of all symbols in the subframe is not occupied within the frame. Optionally, the sPUCCH includes an uplink control channel in which the occupied time domain resource is shorter than the shortest time domain resource length occupied by the ePUCCH, and the same subframe is shared with the downlink partial subframe.

In the prior art, the eNodeB can use an uplink sounding reference signal (SRS) to estimate the uplink channel quality of different frequency bands. Currently, two types of SRS transmissions are defined in LTE, one of which is a periodic uplink SRS (corresponding to a trigger type 0), and the other is an aperiodic uplink SRS (corresponding to a trigger type 1). For a non-periodic uplink SRS, for the FDD, the eNodeB can trigger the acyclic device to send the aperiodic uplink SRS through the DCI format 0/4/1A. For the TDD, the eNodeB can pass the DCI format 0/4/1A/2B/. The 2C triggers the terminal device to send the aperiodic uplink SRS.

At present, the terminal equipment in the LAA-LTE system sends a non-periodic uplink SRS in order to The non-licensed frequency band can be used together with other systems, and the terminal device adopts a channel access mechanism of Listen-Before-Talk (LBT), that is, the terminal device sends data according to the resources scheduled by the base station. The Clear Channel Assessment (CCA) method is first performed to measure the unlicensed frequency band to determine whether the uplink SRS can be sent on the resources scheduled by the base station. If the evaluation result is successful, indicating that no channel uses the unlicensed band to transmit data, it is determined that the channel on the unlicensed band is idle. In this case, the terminal device can use the unlicensed band to send the uplink SRS. If the evaluation result is a failure, indicating that at least one channel uses the unlicensed frequency band to transmit data, it is determined that the channel on the unlicensed frequency band is busy. In this case, in order to avoid affecting data transmission of other channels, the terminal device cannot use the unauthorized device. The frequency band transmits the uplink SRS.

The channel idle evaluation performed by the terminal device can be divided into two evaluation types:

The first evaluation type: the terminal device first listens to the channel, determines that the channel is idle during a delay period of _Tf = 16 us, and then the terminal device performs a single-slot channel listening, the single-time The channel listening period of the slot is T _sl =9us. If the terminal device still detects that the channel is idle during the time of the T _sl , the terminal device is allowed to transmit data on the channel. Otherwise, if the terminal device detects that the channel is busy within the time of the T _sl , the terminal device is not allowed to transmit data on the channel. The terminal device can compare the power received on the channel in the single time slot with the energy detection threshold. If the terminal device is higher than the preset threshold, the terminal device determines that the channel is busy during the time slot of the single time slot. If it is lower than the preset threshold, the terminal device determines that the channel is idle during the time period of the single time slot.

Second evaluation type: The terminal device randomly selects a random number between 0 and CW _p as the initial value of the random backoff count. The terminal device first listens to the channel to determine that the channel is idle during a defer duration _Tf = 16 us. The terminal device then performs channel tracking of single slots one by one in sequence. If the terminal device determines that the channel is idle in the single-slot channel listening time, the random back-off count value is decremented by one; if the terminal device determines that the channel is busy in the single-slot listening time, the random back-off count value is temporarily Do not lose 1. When the random backoff count value is reduced to 0, the terminal device may determine that the final channel evaluation result is successful, and the terminal device is allowed to send data on the channel; otherwise, the terminal device is not used until the random backoff count value is reduced to 0. Allow data to be sent on this channel.

The base station and the terminal device are allowed to use the unlicensed frequency band to transmit data in the channel idle evaluation result, but the length of time for transmitting the data in the unlicensed frequency band is limited. Currently, the length of time It is the Maximum Channel Occupancy Time (MCOT). In the prior art, when the terminal device sends the aperiodic uplink SRS to the base station, if the uplink resource allocated by the base station for the terminal device (that is, the transmission time of the uplink SRS) is within the MCOT of the base station, the terminal device may send the uplink SRS. Before the channel evaluation is performed by using the first evaluation type, the terminal device can send the SRS only if the channel idle evaluation result obtained according to the first evaluation type is the resource that is allowed to occupy the unlicensed spectrum; if the uplink SRS is The sending time is outside the MCOT of the base station, and the terminal device needs to use the second evaluation type for channel evaluation. However, when the terminal device uses the second evaluation type for channel evaluation, how to determine the length of the contention window used to execute the initial value of the CCA generation backoff count to ensure that the terminal device can be at the base station when the channel idle evaluation result is successful. Sending an uplink SRS at the indicated location is an urgent problem to be solved.

FIG. 3 is a schematic flowchart diagram of Embodiment 3 of an uplink signal transmission method according to an embodiment of the present disclosure. The third embodiment relates to a specific process of determining, by the terminal device, the length of the first window according to the subframe information of the first subframe after acquiring the first indication information. As shown in FIG. 3, the method includes:

S301. The terminal device acquires the first indication information, where the first indication information is used to instruct the terminal device to send the uplink sounding reference signal on the first symbol of the first subframe.

Specifically, in this embodiment, the terminal device may obtain first indication information that is sent by the base station to instruct the terminal device to send the uplink SRS on the first symbol of the first subframe. The first subframe may be any subframe that can send an uplink signal, for example, a special subframe or a normal subframe. The first symbol of the first subframe may be any one of the first subframes that can send an uplink signal. In a specific implementation, the first symbol of the first subframe may be, for example, the last of the first subframe. a symbol.

It should be noted that, in this embodiment, the first indication information that is sent by the base station is obtained by the foregoing terminal device. For example, the first indication information may be obtained by receiving the DCI signaling sent by the base station.

S302. The terminal device determines, according to the subframe information of the first subframe, a first window length. The first window length is a contention window length of the terminal device performing channel idle evaluation; and the subframe information packet of the first subframe. Including at least one of the following: the subframe type of the first subframe, and the number of downlink symbols in the first subframe.

Specifically, after receiving the first indication information, the terminal device may determine, according to the first indication information, that the uplink SRS needs to be sent on the first symbol of the first subframe, and determine the terminal according to the subframe information of the first subframe. The device performs the contention window length of the channel idle evaluation, that is, the first window length, so that the terminal device may complete the channel before the time of the first symbol of the first subframe when performing the channel idle evaluation using the first window length. The idle evaluation process, so that the terminal device can successfully send the uplink SRS on the first symbol of the first subframe according to the first indication information when the channel idle evaluation succeeds, thereby improving the success rate of transmitting the uplink SRS.

The embodiment does not limit how the terminal device determines the first window length according to the subframe information of the first subframe. For example, the terminal device may use the subframe information of the first subframe and the preset subframe information. The mapping between the lengths of the windows determines the length of the first window, and the length of the first window is obtained from the upper layer according to the subframe information of the first subframe. The subframe information of the foregoing first subframe includes at least one of the following: a subframe type of the first subframe, and a downlink symbol number in the first subframe.

The subframe type of the first subframe mentioned here may be, for example, a special subframe or a normal subframe. It should be noted that, in this embodiment, the special subframe may be the last subframe in the downlink burst, and the first partial symbol in the special subframe is a downlink symbol used for transmitting downlink information, and the second partial symbol is The upstream symbol used for uplink information when it occurs. That is, the base station may send the downlink data by using the first part of the special subframe, and the terminal device may send the uplink data by using the second part of the special subframe. Optionally, there is a guard interval between the first part symbol and the second part symbol. The sum of the number of the first partial symbol and the second partial symbol is less than or equal to the total number of symbols of a special subframe. Optionally, the first part of the symbol is located in front of the second part of the symbol in time. In a specific implementation, the number of symbols included in the first partial symbol may be, for example, one of 3, 6, 9, 10, 11, and 12. In the above-mentioned normal subframe, there is no symbol for transmission of downlink information, and at least one symbol is used for uplink information transmission.

The subframe information of the foregoing first subframe may include: the number of downlink symbols in the first subframe. Optionally, if the number of downlink symbols in the first subframe is greater than 0 and there is a symbol for sending uplink information, the first subframe is a special subframe, and the number of downlink symbols in the first subframe is 0. , indicating that the first subframe is a normal subframe.

The subframe information of the first subframe may also include: a subframe type of the first subframe, a downlink symbol number in the first subframe, and the like.

S303. The terminal device performs channel idle evaluation according to the first window length. The channel idle evaluation is used to determine whether the uplink sounding reference signal is allowed to be sent on the first symbol of the first subframe.

Specifically, after determining the length of the first window, the terminal device may perform channel idle evaluation according to the first window length to determine whether the uplink sounding reference signal is allowed to be sent on the first symbol of the first subframe. The terminal device performs the channel idle evaluation according to the first window length. For details, refer to the description of the second evaluation type in the prior art. For example, the terminal device determines the initial value of the random backoff count of the channel idle evaluation according to the first window length. And performing channel idle evaluation based on the initial value of the random backoff count.

S304. The terminal device sends an uplink sounding reference signal on the first symbol of the first subframe according to the first indication information when the channel idle evaluation succeeds.

Specifically, when the channel idle evaluation succeeds, the terminal device indicates that the resource transmission information of the first symbol in the first subframe on the unlicensed spectrum is allowed to be occupied. In this case, the terminal device may be based on the first indication information. The uplink SRS is transmitted on the first symbol of the first subframe indicated by the first indication information. If the terminal device channel idle evaluation fails, the terminal device does not send the uplink sounding reference signal on the first symbol of the first subframe according to the first indication information.

The above channel idle evaluation is used to determine whether it is allowed to transmit an uplink sounding reference signal on the first symbol of the first subframe. The success of the channel idle evaluation refers to that the terminal device reduces the random backoff count value determined according to the first window length to 0 before the first symbol of the first subframe, and determines that the first symbol on the unlicensed spectrum is allowed to transmit the uplink information. . The channel idle evaluation failure refers to that the random backoff count value determined by the terminal device according to the first window length before the first symbol of the first subframe has not been reduced to 0, and it is determined that the first symbol transmission on the unlicensed spectrum is not allowed to be used. Uplink information.

In the prior art, when the first indication information indicates that the terminal device sends the uplink SRS on the first symbol of the first subframe, if the first subframe is a special subframe, the terminal device is in accordance with the first indication information. Before transmitting the uplink SRS on the first symbol of the first subframe, after the last downlink symbol of the information data is sent by the special subframe used by the base station, the time period before the first symbol used by the terminal device is completed. The channel idle evaluation process, that is, the random backoff count value determined according to the channel idle evaluation contention window length is reduced to zero. Taking the first symbol of the first subframe as the last symbol of the special subframe (ie, the 14th symbol), taking the last downlink symbol used by the base station as the 12th symbol of the special subframe as an example, the terminal device needs It is possible to be in the channel when the 13th symbol of the first subframe completes the channel idle evaluation process and transitions from the received signal state to the transmitted signal state. When the idle evaluation is successful, that is, if the evaluation result is the resource transmission information that is allowed to occupy the first symbol, the uplink SRS is transmitted on the first symbol.

At this time, if the length of the contention window used by the terminal device to perform CCA is greater than the length of one symbol, the length of time corresponding to the initial value of the random backoff count generated by the terminal device according to the contention window length may be greater than one symbol. The length of time. Thus, even if the unlicensed band is always idle on the thirteenth symbol, the terminal device cannot complete the channel idle evaluation process in the thirteenth symbol of the first subframe, causing the terminal device to fail the first symbol in the first subframe. Send SRS. Specifically, it usually takes 20 us for the terminal device to change from the receiving state to the transmitting state. The length of one symbol (including the CP) is 71.35us, assuming that the terminal device performs L channel interception on the 13th symbol. Then, 16 (channel monitor delay duration) + 9 (single slot duration) L (number of times) + 20 (transceiver state transition duration) <71.35 us, the terminal device may complete the channel idle evaluation in the 13th symbol, And from the receiving state to the transmitting state, the uplink SRS is sent in the first symbol. At this time, the corresponding L in the above formula needs to be less than 3.93. That is to say, the initial value of the random backoff count generated by the terminal device in using the contention window cannot be greater than 4, so that the channel idle evaluation process can be completed in the 13th symbol and switched from the receiving state to the transmitting state. If the length of the contention window is greater than 4, the initial value of the random backoff count generated by the terminal device according to the contention window may be greater than 4. In this case, the terminal device cannot complete the channel idle evaluation process in the 13th symbol, and The transition from the receiving state to the transmitting state causes the terminal device to complete the channel idle evaluation process even after the time. Since the channel idle evaluation process has occupied the first symbol time, the uplink SRS cannot be sent on the first symbol.

In the uplink signal transmission method provided by this embodiment, the terminal device may determine, according to the subframe information of the first subframe, the length of the contention window for performing channel idle evaluation, so that the terminal device may select a contention window adapted to the first subframe. Length to perform channel idle evaluation, thereby improving the probability that the terminal device can complete the process of channel idle evaluation before the first symbol of the first subframe starts, so that the terminal device can be in the first subframe when the channel idle evaluation is successful. The uplink SRS is successfully sent on the first symbol, which improves the success rate of transmitting the uplink SRS, thereby improving the resource utilization of the uplink channel and improving the utilization of the unlicensed spectrum resource.

The uplink signal transmission method provided by the embodiment of the present invention, after the terminal device receives the first indication information that is sent by the base station to instruct the terminal device to send the uplink SRS on the first symbol of the first subframe, according to the first sub The subframe information of the frame determines a contention window in which the terminal device performs channel idle evaluation The length of the port, so that the terminal device can perform the channel idle evaluation according to the contention window length, so as to improve the probability that the terminal device completes the channel idle evaluation process before the first symbol of the first subframe starts, so that the terminal device can be idle in the channel. When the evaluation succeeds, the uplink SRS is successfully sent on the first symbol of the first subframe, which improves the success rate of transmitting the uplink SRS, thereby improving the resource utilization of the uplink channel and improving the utilization of the unlicensed spectrum resource.

Further, on the basis of the foregoing embodiment, the embodiment is related to how the terminal device determines the first window length according to the subframe information of the first subframe, and the S302 may include: the terminal device according to the first subframe. The subframe information, and the mapping relationship between the preset subframe information and the window length, determines the length of the first window.

Specifically, after receiving the first indication information that is sent by the base station to indicate that the terminal device sends the uplink SRS on the first symbol of the first subframe, the terminal device may be configured according to the subframe information of the first subframe, and The mapping relationship between the preset subframe information and the window length determines the length of the first window. The mapping relationship between the preset subframe information and the window length may be specifically classified into the following three cases:

The first case: the subframe information of the first subframe includes: a subframe type of the first subframe, and in this case, the terminal device may use the subframe type of the first subframe and the preset subframe. The mapping relationship between information and window length determines the length of the first window. The mapping relationship between the preset subframe information and the window length is a one-to-one correspondence between the seed frame type and the window length used under the subframe type. For example, the mapping between the preset subframe information and the window length may include: if the type of the first subframe is a special subframe, the window length corresponding to the first subframe information is a first preset value; If the type of the sub-frame is a normal sub-frame, the length of the window corresponding to the first sub-frame information is a second preset value; the first preset value is smaller than the second preset value. The specific value of the first preset value and the second preset value may be specifically determined according to the structure of the special subframe and the normal subframe. For example, the first preset value may be 3, and the second preset value. Can be 7 etc. Thus, in a case where the first symbol of the first subframe is the last symbol of the special subframe, and the last downlink symbol used by the base station is the 12th symbol of the special subframe, the terminal device determines the length of the contention window 3 The initial value of the random backoff count of the channel idle evaluation must be no more than 3. As long as the channel is actually idle in the 13th symbol, the terminal device can complete the channel idle evaluation process in the 13th symbol and convert from the received signal state to When the signal status is transmitted, that is, the evaluation result is the resource transmission information that is allowed to occupy the first symbol, the uplink SRS is transmitted on the first symbol. When the first subframe is a normal subframe, the first symbol is the first subframe. At the last symbol of the frame, since the process of performing channel idle evaluation by the terminal device is not affected by the downlink signal sent by the base station in the first subframe, the terminal device can perform the channel for a longer time with a larger contention window length. The idle evaluation process completes the conversion from the received signal state to the transmitted signal state. For example, the initial value of the random backoff count of the channel idle evaluation determined by the contention window length of 7 satisfies the requirement of channel sharing fairness. With the method in this embodiment, the terminal device may use different contention windows to perform channel idle evaluation when the first subframe is a different type of subframe, so as to improve that the terminal device can be the first in the first subframe. Before the symbol starts, the probability of the channel idle evaluation process is completed, so that the terminal device can successfully send the uplink SRS on the first symbol of the first subframe when the CCA evaluation is successful, thereby improving the success rate of transmitting the uplink SRS, thereby improving the success rate. The resource utilization of the uplink channel improves the utilization of unlicensed spectrum resources.

The second case: the subframe information of the first subframe includes: the number of downlink symbols in the first subframe, in this case, the terminal device may be based on the number of downlink symbols in the first subframe, and preset The mapping relationship between the subframe information and the window length determines the length of the first window. The mapping relationship between the preset subframe information and the window length includes a correspondence between the number of downlink symbols in each first subframe and the window length corresponding to the quantum value. For example, if the number of downlink symbols in the first subframe is N1, the window length corresponding to the first subframe information is K1; if the number of downlink symbols in the first subframe is N2, the first subframe The window length corresponding to the information is K2. Where N1 and N2 are integers, N1 is not equal to N2, and K1 is not equal to K2. The number of different downstream symbols in the first subframe may also correspond to the same window length. The terminal device may determine a window length corresponding to the number of downlink symbols in the first subframe according to the above mapping relationship. It should be noted that there is no symbol in the normal subframe for downlink information transmission, and at least one symbol is used for uplink information transmission, so the number of downlink symbols in the normal subframe is zero. In particular, the mapping between the preset subframe information and the window length may include: if the number of downlink symbols in the first subframe is smaller than the number of the first preset downlink symbols, the length of the window corresponding to the first subframe information is a third preset value; if the number of downlink symbols in the first subframe is greater than or equal to the number of the first preset downlink symbols, the window length corresponding to the first subframe information is a fourth preset value; and the third preset value is greater than The fourth preset value. The specific number of the first preset downlink symbols, and the specific values of the third preset value and the fourth preset value may be specifically determined according to the structure of the special subframe and the normal subframe, for example, the first preset The number of downlink symbols may be 12, the third preset value may be 7, and the fourth preset value may be 3 or the like. Thus, the first symbol in the first subframe is the last symbol of the special subframe, and the last downlink symbol used by the base station is the 12th symbol of the special subframe. In this case, the initial value of the random backoff count of the channel idle evaluation determined by the terminal device with the contention window length 3 is not more than 3, and the terminal device can complete the 13th symbol as long as the channel is actually idle in the 13th symbol. The channel idle evaluation process converts from the received signal state to the transmitted signal state, that is, if the evaluation result is the resource transmission information allowed to occupy the first symbol, the uplink SRS is transmitted on the first symbol. When the first subframe is a normal subframe or the number of downlink symbols in the first subframe is small, the process of performing channel idle evaluation by the terminal device is not affected by the downlink signal sent by the base station in the first subframe, and the terminal The device can perform the channel idle evaluation process and complete the conversion from the received signal state to the transmitted signal state in a longer time with a larger contention window length, such as randomization of the channel idle evaluation determined by the contention window length of 7. The initial value of the backoff count satisfies the need for channel sharing fairness. With the method in this embodiment, the terminal device may perform channel idle evaluation by using different contention windows when the first subframe includes different downlink symbol numbers, so as to improve that the terminal device can be in the first subframe. Before the start of a symbol, the probability of the channel idle evaluation process is completed, so that the terminal device can successfully send the uplink SRS on the first symbol of the first subframe when the CCA evaluation is successful, thereby improving the success rate of transmitting the uplink SRS, thereby improving The resource utilization of the uplink channel improves the utilization of unlicensed spectrum resources.

It should be noted that the mapping relationship between the preset subframe information and the window length shown in the foregoing second case is only an indication, and those skilled in the art can understand that the child in the first subframe is When the frame information includes the number of downlink symbols in the first subframe, the mapping relationship between the preset subframe information and the window length is not limited thereto. For example, the mapping relationship between the preset subframe information and the window length may be The mapping relationship shown in Table 2 below:

Table 2

Optionally, the mapping relationship between the preset subframe information and the window length may exist in multiple forms, such as the mapping relationship shown in Table 3 below:

table 3

The third case: the subframe information of the first subframe includes: a subframe type of the first subframe and a downlink symbol number in the first subframe, and the terminal device may use the subframe type of the first subframe and the first The number of downlink symbols in the subframe, and the mapping relationship between the preset subframe information and the window length determine the length of the first window. The mapping relationship between the preset subframe information and the window length is a one-to-one correspondence between the seed frame type and the number of downlink symbols in the subframe and the window length used in the subframe type. For example, in this case, the mapping between the preset subframe information and the window length may include: if the type of the first subframe is a special subframe, and the number of downlink symbols in the first subframe is smaller than the second If the number of the downlink symbols is preset, the length of the window corresponding to the first subframe information is a fifth preset value; if the type of the first subframe is a special subframe, and the number of downlink symbols in the first subframe is greater than or equal to the second If the number of the downlink symbols is preset, the length of the window corresponding to the first subframe information is a sixth preset value; if the type of the first subframe is a normal subframe, the length of the window corresponding to the first subframe information is the seventh preset. a value; wherein the fifth preset value is greater than the sixth preset value, and the fifth preset value is less than or equal to the seventh preset value.

The specific value of the second preset downlink symbol, and the specific values of the fifth preset value, the sixth preset value, and the seventh preset value may be specifically determined according to the structure of the special subframe and the normal subframe. For example, the number of the second preset downlink symbols may be 12, the fifth preset value may be 7, the sixth preset value may be 3, and the seventh preset value may be a value greater than or equal to 7. For example: 8 etc. Thus, in a case where the first symbol of the first subframe is the last symbol of the special subframe, and the last downlink symbol used by the base station is the 12th symbol of the special subframe, the terminal device determines the length of the contention window 3 The initial value of the random backoff count of the channel idle evaluation must be no more than 3. As long as the channel is actually idle in the 13th symbol, the terminal device can complete the channel idle evaluation process in the 13th symbol and convert from the received signal state to When the signal status is transmitted, that is, the evaluation result is the resource transmission information that is allowed to occupy the first symbol, the uplink SRS is transmitted on the first symbol. When the first subframe is a normal subframe or the number of downlink symbols in the first subframe is small, Since the process of performing channel idle evaluation by the terminal device is not affected by the downlink signal sent by the base station in the first subframe, the terminal device can perform the channel idle evaluation process and complete the process in a longer time with a larger contention window length. The conversion of the received signal state to the state of the transmitted signal, such as the initial value of the random backoff count of the channel idleness determined by the contention window length of 7, satisfies the requirement of channel sharing fairness. With the method in this embodiment, the terminal device may use different contention windows to perform channel idle evaluation when the first subframe is in different types, and when the same type includes different downlink symbol numbers, to improve the terminal. The device may complete the probability of the channel idle evaluation process before the first symbol of the first subframe starts, so that the terminal device can successfully send the uplink SRS on the first symbol of the first subframe when the CCA evaluation succeeds, thereby improving the uplink SRS. The success rate of sending uplink SRS improves the resource utilization of the uplink channel and improves the utilization of unlicensed spectrum resources.

It should be noted that the mapping relationship between the preset subframe information and the window length shown in the foregoing third case is only an indication, and those skilled in the art can understand that the child in the first subframe is When the frame information includes the subframe type of the first subframe and the number of downlink symbols in the first subframe, the mapping relationship between the preset subframe information and the window length is not limited thereto, for example, the preset sub-subject The mapping relationship between the frame information and the window length can be as shown in the following Table 4:

Table 4

According to the uplink signal transmission method provided by the embodiment of the present invention, the terminal device may obtain the first indication information that is sent by the base station to instruct the terminal device to send the uplink SRS on the first symbol of the first subframe, and according to the first subframe. The subframe information determines a contention window length that the terminal device performs the channel idle evaluation, so that the terminal device can perform the channel idle evaluation according to the contention window length, so that the terminal device can complete the channel before the first symbol of the first subframe starts. The probability of the idle evaluation process, so that the terminal device can be on the first symbol of the first subframe when the CCA evaluation is successful. The uplink SRS is successfully transmitted, which improves the success rate of transmitting the uplink SRS, thereby improving the resource utilization of the uplink channel and improving the utilization of the unlicensed spectrum resource.

Further, on the basis of the foregoing embodiment, before the foregoing S302, the method may further include: acquiring, by the terminal device, subframe information of the first subframe.

Specifically, in this implementation, the foregoing terminal device acquires first indication information for instructing the terminal device to send an uplink SRS on the first symbol of the first subframe, and acquires subframe information of the first subframe. The embodiment does not limit the manner in which the terminal device acquires the subframe information of the first subframe. For example, the terminal device may directly obtain the first subframe by using the subframe information of the first subframe carried in the first indication information. The subframe information of the frame may also obtain the subframe information of the first subframe by receiving the signaling that is sent by the upper layer to the terminal device and is used to indicate the subframe information of the first subframe.

Optionally, the terminal device may further acquire the subframe information of the first subframe by using common control information sent by the base station on a subframe in the downlink burst and/or a subframe before the tail subframe. In a specific implementation, if the subframe information of the first subframe includes the subframe type of the first subframe, the terminal device may send, according to the identifier of the first subframe carried in the first indication information, The identifier of the tail subframe in the downlink transmission indicated by the common control information to determine whether the first subframe is a tail subframe, so that the terminal device can determine the first when the first subframe is the tail subframe. The subframe is a special subframe, and when the first subframe is not the tail subframe, it is determined that the first subframe is a normal subframe. If the subframe information of the first subframe further includes: the number of downlink symbols of the first subframe, the terminal device determines, by using the foregoing manner, that the first subframe is a special subframe, and further passes the tail indicated by the common control information. The number of downlink symbols of the subframe, to determine the number of downlink symbols of the first subframe, and the like.

Optionally, on the basis of the foregoing embodiment, before the foregoing S302, the method may further include: determining, by the terminal device, performing channel idle evaluation using the second evaluation type. The present invention is not limited to the terminal device determining which evaluation type to use to perform channel idle evaluation. For example, the terminal device may obtain, in the first indication information, information about which evaluation type the terminal device uses to perform channel idle evaluation. As another example, the terminal device can determine whether the first symbol is within or outside the MCOT of the base station. If the transmission time of the uplink SRS is outside the MCOT of the base station, the terminal device determines the first window length according to the subframe information of the first subframe according to S302, and performs channel idle evaluation or the like. The method for the terminal device to determine whether the first symbol is outside the MCOT of the base station or outside the MCOT of the base station is not limited. For example, the terminal device may obtain, in the first indication information, whether the first symbol is within the MCOT of the base station or Information other than the MCOT of the base station can also be sent to multiple terminals at the base station. The public information of the device acquires information that the first symbol is within the MCOT of the base station or outside the MCOT.

In this manner, after obtaining the subframe information of the first subframe, the terminal device may determine, according to the first indication information, that the uplink SRS needs to be sent on the first symbol of the first subframe, and then according to the first The subframe information of the subframe determines the contention window length of the channel idle evaluation, that is, the first window length, so that the terminal device may perform the channel idle evaluation using the first window length, possibly in the first subframe. Before the time of the first symbol, the process of channel idle evaluation is completed, so that the terminal device can successfully send the uplink SRS on the first symbol of the first subframe according to the first indication information when the channel idle evaluation succeeds, thereby improving the sending uplink. The success rate of SRS.

The uplink signal transmission method provided by the embodiment of the present invention may be obtained by the terminal device after receiving the first indication information that is sent by the base station to instruct the terminal device to send the uplink SRS on the first symbol of the first subframe. Subframe information of a subframe, so that the terminal device can determine, according to the subframe information of the first subframe, a contention window length that the terminal device performs channel idle evaluation, so that the terminal device can perform channel idle evaluation according to the contention window length. To improve the probability that the terminal device can complete the channel idle evaluation process before the first symbol of the first subframe starts, so that the terminal device can successfully send the first symbol of the first subframe when the channel idle evaluation succeeds. The uplink SRS improves the success rate of transmitting the uplink SRS, thereby improving the resource utilization of the uplink channel and improving the utilization of the unlicensed spectrum resource.

One of ordinary skill in the art will appreciate that all or part of the steps to implement the various method embodiments described above may be accomplished by hardware associated with the program instructions. The aforementioned program can be stored in a computer readable storage medium. The program, when executed, performs the steps including the foregoing method embodiments; and the foregoing storage medium includes various media that can store program codes, such as a ROM, a RAM, a magnetic disk, or an optical disk.

FIG. 4 is a schematic structural diagram of Embodiment 1 of a terminal device according to an embodiment of the present invention. As shown in FIG. 4, the terminal device may include: a receiving module 11 and a first determining module 12;

The receiving module 11 is configured to receive first control information, second control information, and third control information that are sent by the network device, where the first control information indicates that the terminal device sends the first hybrid automatic repeat request acknowledgement HARQ-ACK on the first uplink channel. The second control information indicates that the terminal device sends the second HARQ-ACK on the second uplink channel.

The first determining module 12 is configured to indicate, in the third control information, that the terminal device sends the first uplink channel When the first uplink information is sent, determining, according to the second control information and the third control information, that the first uplink information is sent to the network device on the first uplink channel, and the second HARQ-ACK is sent to the network device on the second uplink channel.

The terminal device provided by the embodiment of the present invention may perform the method on the terminal device side in the method embodiment shown in FIG. 1 , and the implementation principle and the technical effect are similar, and details are not described herein again.

FIG. 5 is a schematic structural diagram of Embodiment 2 of a terminal device according to an embodiment of the present disclosure. As shown in FIG. 5, the terminal device may further include:

The second determining module 13 is configured to: when the third control information does not indicate that the terminal device sends the first uplink information on the first uplink channel, determine, according to the first control information and the second control information, that the first HARQ is sent on the first uplink channel. - ACK, transmitting a second HARQ-ACK on the second uplink channel.

The terminal device provided by the embodiment of the present invention can perform the method on the terminal device side in the method embodiment shown in FIG. 2, and the implementation principle and technical effects are similar, and details are not described herein again.

Optionally, in an implementation manner of the disclosure, the first uplink channel is a short physical uplink control channel sPUCCH, and the second uplink channel is an extended physical uplink control channel ePUCCH or a physical uplink shared channel PUSCH. In this case, the foregoing first uplink control information includes at least one of the following information: a sounding reference signal SRS and channel state information CSI. Optionally, in an implementation manner of the disclosure, the first uplink channel is a first extended physical uplink control channel ePUCCH, the second uplink channel is a second ePUCCH, or a physical uplink shared channel PUSCH. In this case, the first uplink control information includes channel state information CSI.

Optionally, in an implementation manner of the present invention, the second downlink data channel set corresponding to the second HARQ-ACK includes a first downlink data channel set corresponding to the first HARQ-ACK. Optionally, in an implementation manner of the present invention, the first uplink channel and the second uplink channel occupy different time domain resources. Optionally, in an implementation manner of the present invention, the first uplink channel and the second uplink channel are in the same uplink transmission on the unlicensed spectrum.

FIG. 6 is a schematic structural diagram of Embodiment 1 of a network device according to an embodiment of the present invention. As shown in FIG. 6, the network device may include: a sending module 21 and a first determining module 22;

The sending module 21 is configured to send the first control information, the second control information, and the third control information to the terminal device, where the first control information indicates that the terminal device sends the first hybrid automatic repeat request to confirm the HARQ-ACK on the first uplink channel. The second control information indicates that the terminal device sends the second HARQ-ACK on the second uplink channel;

The first determining module 22 is configured to: when the third control information indicates that the terminal device sends the first uplink information on the first uplink channel, determine, according to the second control information and the third control information, that the terminal device is sent by the first uplink channel The first uplink information is used to receive the second HARQ-ACK sent by the terminal device on the second uplink channel.

The network device provided by the embodiment of the present invention may perform the method on the network device side in the method embodiment shown in FIG. 1 , and the implementation principle and technical effects are similar, and details are not described herein again.

FIG. 7 is a schematic structural diagram of Embodiment 2 of a network device according to an embodiment of the present invention. As shown in FIG. 7, the network device may further include:

The second determining module 23 is configured to: when the third control information does not indicate that the terminal device sends the first uplink information on the first uplink channel, determine, according to the first control information and the second control information, that the terminal device sends the first uplink channel The first HARQ-ACK receives the second HARQ-ACK sent by the terminal device on the second uplink channel.

The network device provided by the embodiment of the present invention may perform the method on the network device side in the method embodiment shown in FIG. 2, and the implementation principle and technical effects are similar, and details are not described herein again.

FIG. 8 is a schematic structural diagram of Embodiment 3 of a terminal device according to an embodiment of the present disclosure. As shown in FIG. 8 , the terminal device may include: an obtaining module 31, a determining module 32, an executing module 33, and a sending module 34.

The obtaining module 31 is configured to acquire first indication information, where the first indication information is used to indicate the terminal device Transmitting an uplink sounding reference signal on the first symbol of the first subframe;

a determining module 32, configured to determine, according to the subframe information of the first subframe, a first window length; the first window length is a contention window length of the terminal device performing channel idle evaluation; and the subframe information of the first subframe includes at least one of the following : the subframe type of the first subframe, and the number of downlink symbols in the first subframe;

The executing module 33 is configured to perform channel idle evaluation according to the first window length; the channel idle evaluation is used to determine whether the uplink sounding reference signal is allowed to be sent on the first symbol of the first subframe;

The sending module 34 is configured to send an uplink sounding reference signal on the first symbol of the first subframe according to the first indication information when the channel idle evaluation succeeds.

The terminal device provided by the embodiment of the present invention can perform the method embodiment shown in FIG. 3, and the implementation principle and technical effects are similar, and details are not described herein again.

Optionally, in an implementation manner of the disclosure, the foregoing subframe type is a special subframe or a normal subframe.

Optionally, the determining module 32 is specifically configured to determine the first window length according to the subframe information of the first subframe and the mapping relationship between the preset subframe information and the window length.

If the subframe information of the first subframe includes the subframe type of the first subframe, the mapping relationship between the preset subframe information and the window length includes: if the type of the first subframe is a special subframe, The length of the window corresponding to the first subframe information is a first preset value; if the type of the first subframe is a normal subframe, the length of the window corresponding to the first subframe information is a second preset value; The value is less than the second preset value.

If the subframe information of the first subframe includes the number of downlink symbols in the first subframe, the mapping relationship between the preset subframe information and the window length includes: if the number of downlink symbols in the first subframe is smaller than The first preset number of downlink symbols, the length of the window corresponding to the first subframe information is a third preset value; if the number of downlink symbols in the first subframe is greater than or equal to the number of the first preset downlink symbols, the first sub The window length corresponding to the frame information is a fourth preset value; the third preset value is greater than the fourth preset value.

If the subframe information of the first subframe includes: a subframe type of the first subframe and a downlink symbol number in the first subframe, the mapping relationship between the preset subframe information and the window length includes: If the type of the sub-frame is a special sub-frame, and the number of the downlink symbols in the first sub-frame is smaller than the number of the second preset downlink symbols, the window length corresponding to the first sub-frame information is the fifth preset value; If the type of the frame is a special subframe, and the number of downlink symbols in the first subframe is greater than or equal to the number of the second preset downlink symbols, the window length corresponding to the first subframe information is a sixth preset value; If the type of the frame is a normal subframe, the length of the window corresponding to the first subframe information is a seventh preset value; the fifth preset value is greater than the first Six preset values, the fifth preset value is less than or equal to the seventh preset value.

Optionally, the obtaining module 31 is further configured to acquire the subframe information of the first subframe before the determining module 32 determines the first window length according to the subframe information of the first subframe.

FIG. 9 is a schematic structural diagram of Embodiment 4 of a terminal device according to an embodiment of the present invention. As shown in FIG. 9 , on the structural block diagram of the terminal device shown in FIG. 8 , the execution module 33 of the terminal device may include:

a determining unit 331, configured to determine, according to the first window length, an initial value of the random backoff count of the channel idle evaluation;

The executing unit 332 is configured to perform channel idle evaluation according to the random backoff count initial value.

FIG. 10 is a schematic structural diagram of Embodiment 5 of a terminal device according to an embodiment of the present invention. As shown in FIG. 10, the terminal device may include: a receiver 41, a processor 42, and a transmitter 43.

The receiver 41 is configured to receive first control information, second control information, and third control information that are sent by the network device, where the first control information indicates that the terminal device sends the first hybrid automatic repeat request acknowledgement HARQ-ACK on the first uplink channel. The second control information indicates that the terminal device sends the second HARQ-ACK on the second uplink channel.

The processor 42 is configured to: when the third control information indicates that the terminal device sends the first uplink information on the first uplink channel, determine, according to the second control information and the third control information, that the control transmitter 43 is in the first uplink channel to the network device. The first uplink information is sent, and the control transmitter 43 transmits a second HARQ-ACK to the network device on the second uplink channel.

Optionally, the processor 42 is further configured to: when the third control information does not indicate that the terminal device sends the first uplink information on the first uplink channel, determine, according to the first control information and the second control information, that the control transmitter 43 is The first uplink channel transmits a first HARQ-ACK, and the control transmitter 43 transmits a second HARQ-ACK on the second uplink channel.

Optionally, in an implementation manner of the disclosure, the first uplink channel is a short physical uplink control channel sPUCCH, and the second uplink channel is an extended physical uplink control channel ePUCCH or a physical uplink shared channel PUSCH. In this case, the foregoing first uplink control information includes At least one of the following information: a sounding reference signal SRS, channel state information CSI. Optionally, in an implementation manner of the disclosure, the first uplink channel is a first extended physical uplink control channel ePUCCH, the second uplink channel is a second ePUCCH, or a physical uplink shared channel PUSCH. In this case, the first uplink control information includes channel state information CSI.

FIG. 11 is a schematic structural diagram of Embodiment 3 of a network device according to an embodiment of the present invention. As shown in FIG. 11, the network device may include: a transmitter 51, a processor 52, and a receiver 53;

The transmitter 51 is configured to send the first control information, the second control information, and the third control information to the terminal device, where the first control information indicates that the terminal device sends the first hybrid automatic repeat request acknowledgement HARQ-ACK on the first uplink channel, The second control information indicates that the terminal device sends the second HARQ-ACK on the second uplink channel;

The processor 52 is configured to: when the third control information indicates that the terminal device sends the first uplink information on the first uplink channel, determine, according to the second control information and the third control information, that the control receiver 53 receives the terminal device on the first uplink channel. The transmitted first uplink information, the control receiver 53 receives the second HARQ-ACK sent by the terminal device on the second uplink channel.

Optionally, the processor 52 is further configured to: when the third control information does not indicate that the terminal device sends the first uplink information on the first uplink channel, determine, according to the first control information and the second control information, that the control receiver 53 is in the first An uplink channel receives the first HARQ-ACK sent by the terminal device, and the control receiver 53 receives the second HARQ-ACK sent by the terminal device on the second uplink channel.

FIG. 12 is a schematic structural diagram of Embodiment 6 of a terminal device according to an embodiment of the present invention. As shown in FIG. 12, the terminal device may include: a processor 61 and a transmitter 62.

The processor 61 is configured to obtain the first indication information, where the first indication information is used to indicate that the terminal device sends the uplink sounding reference signal on the first symbol of the first subframe.

The processor 61 is further configured to determine a first window length according to the subframe information of the first subframe, and perform channel idle evaluation according to the first window length; the first window length is a contention window length of the terminal device performing channel idle evaluation; The subframe information of a subframe includes at least one of: a subframe type of the first subframe, a downlink symbol number in the first subframe, and a channel idle evaluation for determining whether the first symbol in the first subframe is allowed. Sending an uplink sounding reference signal;

The transmitter 62 is configured to send an uplink sounding reference signal on the first symbol of the first subframe according to the first indication information when the channel idle evaluation succeeds.

Optionally, the processor 61 is configured to determine a first window length according to the subframe information of the first subframe and the mapping relationship between the preset subframe information and the window length.

If the subframe information of the first subframe includes: a subframe type of the first subframe and a downlink symbol number in the first subframe, the mapping relationship between the preset subframe information and the window length includes: If the type of the sub-frame is a special sub-frame, and the number of the downlink symbols in the first sub-frame is smaller than the number of the second preset downlink symbols, the window length corresponding to the first sub-frame information is the fifth preset value; If the type of the frame is a special subframe, and the number of downlink symbols in the first subframe is greater than or equal to the number of the second preset downlink symbols, the window length corresponding to the first subframe information is a sixth preset value; If the type of the frame is a normal subframe, the length of the window corresponding to the first subframe information is a seventh preset value; the fifth preset value is greater than the sixth preset value, and the fifth preset value is less than or equal to the seventh preset value. .

Optionally, the processor 61 is further configured to acquire subframe information of the first subframe before determining the first window length according to the subframe information of the first subframe.

Optionally, the processor 61 is configured to determine an initial value of the random backoff count of the channel idle evaluation according to the first window length, and perform channel idle evaluation according to the initial value of the random backoff count.

As described in the foregoing embodiment, the terminal device in the embodiment of the present invention may be a wireless terminal such as a mobile phone or a tablet computer. Therefore, the terminal device is used as a mobile phone as an example: FIG. 13 is a schematic diagram of the terminal device being a mobile phone according to an embodiment of the present invention. Structure diagram. Referring to FIG. 13, the mobile phone may include: a radio frequency (RF) circuit 1110, a memory 1120, an input unit 1130, a display unit 1140, a sensor 1150, an audio circuit 1160, a wireless fidelity (WiFi) module 1170, and processing. Device 1180, and power supply 1190 and other components. It will be understood by those skilled in the art that the structure of the handset shown in FIG. 13 does not constitute a limitation to the handset, and may include more or less components than those illustrated, or some components may be combined, or different components may be arranged.

The specific components of the mobile phone will be specifically described below with reference to FIG. 13:

The RF circuit 1110 can be used for receiving and transmitting signals during the transmission or reception of information or during a call. Specifically, after receiving the downlink information of the base station, the processing is performed by the processor 1180. In addition, the uplink data is sent. Send to the base station. Generally, RF circuits include, but are not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a Low Noise Amplifier (LNA), a duplexer, and the like. In addition, RF circuitry 1110 can also communicate with the network and other devices via wireless communication. The above wireless communication may use any communication standard or protocol, including but not limited to Global System of Mobile communication (GSM), General Packet Radio Service (GPRS), Code Division Multiple Access (Code Division). Multiple Access (CDMA), Wideband Code Division Multiple Access (WCDMA), Long Term Evolution (LTE), e-mail, Short Messaging Service (SMS), and the like.

The memory 1120 can be used to store software programs and modules, and the processor 1180 executes various functional applications and data processing of the mobile phone by running software programs and modules stored in the memory 1120. The memory 1120 may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application required for at least one function (such as a sound playing function, an image playing function, etc.), and the like; the storage data area may be stored according to Data created by the use of the mobile phone (such as audio data, phone book, etc.). Moreover, memory 1120 can include high speed random access memory, and can also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device.

The input unit 1130 can be configured to receive input numeric or character information and to generate key signal inputs related to user settings and function controls of the handset. Specifically, the input unit 1130 may include a touch panel 1131 and other input devices 1132. The touch panel 1131, also referred to as a touch screen, can collect touch operations on or near the user (such as the user using a finger, a stylus, or the like on the touch panel 1131 or near the touch panel 1131. Operation), and drive the corresponding connecting device according to a preset program. Optionally, the touch panel 1131 may include two parts: a touch detection device and a touch controller. Wherein, the touch detection device detects the touch orientation of the user, and detects a signal brought by the touch operation, and transmits the signal to the touch controller; the touch controller receives the touch information from the touch detection device, converts the touch information into contact coordinates, and sends the touch information. The processor 1180 is provided and can receive commands from the processor 1180 and execute them. In addition, the touch panel 1131 can be implemented in various types such as resistive, capacitive, infrared, and surface acoustic waves. In addition to the touch panel 1131, the input unit 1130 may also include other input devices 1132. Specifically, other input devices 1132 may include, but are not limited to, a physical keyboard, function keys (such as a volume control button, a switch button, etc.), a trackball, One or more of a mouse, a joystick, and the like.

The display unit 1140 can be used to display information input by the user or information provided to the user as well as various menus of the mobile phone. The display unit 1140 may include a display panel 1141. Alternatively, the display panel 1141 may be configured in the form of a liquid crystal display (LCD), an organic light-emitting diode (OLED), or the like. Further, the touch panel 1131 can be overlaid on the display panel 1141. When the touch panel 1131 detects a touch operation thereon or nearby, the touch panel 1131 transmits to the processor 1180 to determine the type of the touch event, and then the processor 1180 is The type of touch event provides a corresponding visual output on display panel 1141. Although in FIG. 13 , the touch panel 1131 and the display panel 1141 are two independent components to implement the input and input functions of the mobile phone, in some embodiments, the touch panel 1131 and the display panel 1141 may be integrated. Realize the input and output functions of the phone.

The handset may also include at least one type of sensor 1150, such as a light sensor, motion sensor, and other sensors. Specifically, the light sensor may include an ambient light sensor and a proximity sensor, wherein the ambient light sensor may adjust the brightness of the display panel 1141 according to the brightness of the ambient light, and the light sensor may close the display panel 1141 and/or when the mobile phone moves to the ear. Or backlight. As a kind of motion sensor, the acceleration sensor can detect the acceleration of each direction (usually three axes). When it is still, it can detect the magnitude and direction of gravity. It can be used to identify the gesture of the mobile phone (such as horizontal and vertical screen switching, related games). , magnetometer attitude calibration), vibration recognition related functions (such as pedometer, tapping), etc.; as the mobile phone can also be configured with gyroscopes, barometers, hygrometers, thermometers, infrared sensors and other sensors, no longer repeat .

Audio circuitry 1160, speaker 1161, and microphone 1162 can provide an audio interface between the user and the handset. The audio circuit 1160 can transmit the converted electrical data of the received audio data to the speaker 1161, and convert it into a sound signal output by the speaker 1161; on the other hand, the microphone 1162 converts the collected sound signal into an electrical signal, and the audio circuit 1160 After receiving, it is converted into audio data, and then processed by the audio data output processor 1180, transmitted to the other mobile phone via the RF circuit 1110, or outputted to the memory 1120 for further processing.

WiFi is a short-range wireless transmission technology. The mobile phone can help users to send and receive emails, browse web pages and access streaming media through the WiFi module 1170, which provides users with wireless broadband Internet access. Although FIG. 13 shows the WiFi module 1170, it can be understood that it does not belong to the essential configuration of the mobile phone, and can be omitted as needed within the scope of not changing the essence of the invention.

The processor 1180 is a control center for the handset, which connects various portions of the entire handset using various interfaces and lines, by executing or executing software programs and/or modules stored in the memory 1120, and invoking data stored in the memory 1120, The phone's various functions and processing data, so that the overall monitoring of the phone. Optionally, the processor 1180 may include one or more processing units; preferably, the processor 1180 may integrate an application processor and a modem processor, where the application processor mainly processes an operating system, a user interface, an application, and the like. The modem processor primarily handles wireless communications. It will be appreciated that the above described modem processor may also not be integrated into the processor 1180.

The handset also includes a power source 1190 (such as a battery) that powers the various components. Preferably, the power source can be logically coupled to the processor 1180 via a power management system to manage functions such as charging, discharging, and power management through the power management system.

The mobile phone can also include a camera 1200, which can be a front camera or a rear camera. Although not shown, the mobile phone may further include a Bluetooth module, a GPS module, and the like, and details are not described herein again.

In the embodiment of the present invention, the processor 1180 included in the mobile phone may be used to perform the foregoing method for transmitting an uplink signal, and the implementation principle and technical effects are similar, and details are not described herein again.

Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, and are not intended to be limiting; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that The technical solutions described in the foregoing embodiments may be modified, or some or all of the technical features may be equivalently replaced; and the modifications or substitutions do not deviate from the technical solutions of the embodiments of the present invention. range.

Claims

An uplink signal transmission method, comprising:

The terminal device receives the first control information, the second control information, and the third control information that are sent by the network device, where the first control information indicates that the terminal device sends the first hybrid automatic repeat request acknowledgement HARQ-ACK on the first uplink channel. The second control information indicates that the terminal device sends a second HARQ-ACK on the second uplink channel.

If the third control information indicates that the terminal device sends the first uplink information on the first uplink channel, the terminal device determines, according to the second control information and the third control information, that the An uplink channel sends the first uplink information to the network device, and sends the second HARQ-ACK to the network device on the second uplink channel.
The method of claim 1 further comprising:

If the third control information does not indicate that the terminal device sends the first uplink information on the first uplink channel, the terminal device determines, according to the first control information and the second control information, that The first uplink channel transmits the first HARQ-ACK, and the second uplink channel transmits the second HARQ-ACK.
The method according to claim 1 or 2, wherein the first uplink channel is a short physical uplink control channel sPUCCH, the second uplink channel is an extended physical uplink control channel ePUCCH, or a physical uplink shared channel PUSCH .
The method according to claim 3, wherein the first uplink control information comprises at least one of the following: a sounding reference signal SRS, channel state information CSI.
The method according to claim 1 or 2, wherein the first uplink channel is a first extended physical uplink control channel ePUCCH, and the second uplink channel is a second ePUCCH or a physical uplink shared channel PUSCH.
The method according to claim 5, wherein the first uplink control information comprises channel state information CSI.
The method according to any one of claims 1-6, wherein the second downlink data channel set corresponding to the second HARQ-ACK comprises the first downlink data channel set corresponding to the first HARQ-ACK .
The method according to any one of claims 1 to 7, wherein the first uplink channel and the second uplink channel occupy different time domain resources.
The method according to any one of claims 1-8, wherein the first uplink channel and the second uplink channel are in the same uplink transmission on the unlicensed spectrum.
An uplink signal transmission method, comprising:

The network device sends the first control information, the second control information, and the third control information to the terminal device, where the first control information indicates that the terminal device sends the first hybrid automatic repeat request acknowledge HARQ-ACK on the first uplink channel, The second control information indicates that the terminal device sends a second HARQ-ACK on the second uplink channel;

If the third control information indicates that the terminal device sends the first uplink information on the first uplink channel, the network device determines, according to the second control information, the third control information, that Receiving, by the uplink channel, the first uplink information sent by the terminal device, and receiving, by the second uplink channel, the second HARQ-ACK sent by the terminal device.
The method of claim 10, wherein the method further comprises:

If the third control information does not indicate that the terminal device sends the first uplink information on the first uplink channel, the network device determines, according to the first control information and the second control information, that The first uplink channel receives the first HARQ-ACK sent by the terminal device, and receives the second HARQ-ACK sent by the terminal device on the second uplink channel.
The method according to claim 10 or 11, wherein the first uplink channel is a short physical uplink control channel sPUCCH, the second uplink channel is an extended physical uplink control channel ePUCCH, or a physical uplink shared channel PUSCH .
The method according to claim 12, wherein the first uplink control information comprises at least one of the following: a sounding reference signal SRS, channel state information CSI.
The method according to claim 10 or 11, wherein the first uplink channel is a first extended physical uplink control channel ePUCCH, and the second uplink channel is a second ePUCCH or a physical uplink shared channel PUSCH.
The method according to claim 14, wherein the first uplink control information comprises channel state information CSI.
The method according to any one of claims 10-15, wherein the second downlink data channel set corresponding to the second HARQ-ACK comprises the first downlink data channel set corresponding to the first HARQ-ACK .
A method according to any one of claims 10-16, wherein said first The row channel is different from the time domain resource occupied by the second uplink channel.
The method according to any one of claims 10-17, wherein the first uplink channel and the second uplink channel are in the same uplink transmission on the unlicensed spectrum.
An uplink signal transmission method, comprising:

Receiving, by the terminal device, the first indication information, where the first indication information is used to indicate that the terminal device sends an uplink sounding reference signal on the first symbol of the first subframe;

Determining, by the terminal device, a first window length according to the subframe information of the first subframe; the first window length is a contention window length of the terminal device performing channel idle evaluation; and the subframe of the first subframe The information includes at least one of: a subframe type of the first subframe, and a downlink symbol number in the first subframe;

The terminal device performs channel idle evaluation according to the first window length; the channel idle evaluation is used to determine whether the uplink sounding reference signal is allowed to be sent on the first symbol of the first subframe;

When the channel idle evaluation is successful, the terminal device sends the uplink sounding reference signal on the first symbol of the first subframe according to the first indication information.
The method according to claim 19, wherein the subframe type is a special subframe or a normal subframe.
The method according to claim 19 or 20, wherein the determining, by the terminal device, the first window length according to the subframe information of the first subframe comprises:

The terminal device determines the first window length according to the subframe information of the first subframe and the mapping relationship between the preset subframe information and the window length.
The method according to claim 21, wherein the subframe information of the first subframe comprises: a subframe type of the first subframe;

The mapping relationship between the preset subframe information and the window length includes:

If the type of the first subframe is a special subframe, the length of the window corresponding to the first subframe information is a first preset value;

If the type of the first subframe is a normal subframe, the length of the window corresponding to the first subframe information is a second preset value; and the first preset value is smaller than the second preset value.
The method according to claim 21, wherein the subframe information of the first subframe comprises: a number of downlink symbols in the first subframe;

The mapping relationship between the preset subframe information and the window length includes:

If the number of the downlink symbols in the first subframe is smaller than the number of the first preset downlink symbols, the window length corresponding to the first subframe information is a third preset value;

If the number of the downlink symbols in the first subframe is greater than or equal to the number of the first preset downlink symbols, the window length corresponding to the first subframe information is a fourth preset value; The value is greater than the fourth preset value.
The method according to claim 21, wherein the subframe information of the first subframe comprises: a subframe type of the first subframe and a downlink symbol number in the first subframe;

The mapping relationship between the preset subframe information and the window length includes:

If the type of the first subframe is a special subframe, and the number of downlink symbols in the first subframe is smaller than the number of second preset downlink symbols, the window length corresponding to the first subframe information is fifth. default value;

If the type of the first subframe is a special subframe, and the number of downlink symbols in the first subframe is greater than or equal to the number of the second preset downlink symbols, the window length corresponding to the first subframe information is The sixth preset value;

If the type of the first subframe is a normal subframe, the window length corresponding to the first subframe information is a seventh preset value;

The fifth preset value is greater than the sixth preset value, and the fifth preset value is less than or equal to the seventh preset value.
The method according to any one of claims 19 to 24, wherein before the determining, by the terminal device, the first window length according to the subframe information of the first subframe, the method further includes:

The terminal device acquires subframe information of the first subframe.
The method according to any one of claims 19 to 25, wherein the terminal device performs channel idle evaluation according to the first window length, including:

Determining, by the terminal device, an initial value of a random backoff count of the channel idle evaluation according to the first window length;

The terminal device performs channel idle evaluation according to the random backoff count initial value.
A terminal device, the terminal device includes:

a receiving module, configured to receive first control information, second control information, and third control information that are sent by the network device, where the first control information indicates that the terminal device sends the first uplink channel a hybrid automatic repeat request to confirm the HARQ-ACK, the second control information instructing the terminal device to send the second HARQ-ACK on the second uplink channel;

a first determining module, configured to: when the third control information indicates that the terminal device sends the first uplink information on the first uplink channel, determine, according to the second control information, the third control information, The first uplink channel sends the first uplink information to the network device, and sends the second HARQ-ACK to the network device on the second uplink channel.
The terminal device according to claim 27, wherein the terminal device further comprises:

a second determining module, configured to determine, according to the first control information, the second control information, when the third control information does not indicate that the terminal device sends the first uplink information on the first uplink channel Transmitting the first HARQ-ACK on the first uplink channel and the second HARQ-ACK on the second uplink channel.
The terminal device according to claim 27 or 28, wherein the first uplink channel is a short physical uplink control channel sPUCCH, the second uplink channel is an extended physical uplink control channel ePUCCH, or a physical uplink shared channel PUSCH.
The terminal device according to claim 29, wherein the first uplink control information comprises at least one of the following: a sounding reference signal SRS and channel state information CSI.
The terminal device according to claim 27 or 28, wherein the first uplink channel is a first extended physical uplink control channel ePUCCH, the second uplink channel is a second ePUCCH, or a physical uplink shared channel PUSCH .
The terminal device according to claim 31, wherein the first uplink control information comprises channel state information CSI.
The terminal device according to any one of claims 27 to 32, wherein the second downlink data channel set corresponding to the second HARQ-ACK includes the first downlink data channel corresponding to the first HARQ-ACK set.
The terminal device according to any one of claims 27 to 33, wherein the first uplink channel and the second uplink channel occupy different time domain resources.
The terminal device according to any one of claims 27 to 34, wherein the first uplink channel and the second uplink channel are in the same uplink transmission on the unlicensed spectrum.
A network device, where the network device includes:

a sending module, configured to send first control information, second control information, and third control information to the terminal device, where the first control information indicates that the terminal device sends a first hybrid automatic repeat request acknowledge HARQ on the first uplink channel - ACK, the second control information instructing the terminal device to send a second HARQ-ACK on the second uplink channel;

a first determining module, configured to: when the third control information indicates that the terminal device sends the first uplink information on the first uplink channel, determine, according to the second control information, the third control information, The first uplink channel receives the first uplink information sent by the terminal device, and receives the second HARQ-ACK sent by the terminal device on the second uplink channel.
The network device according to claim 36, wherein the network device further comprises:

a second determining module, configured to determine, according to the first control information, the second control information, when the third control information does not indicate that the terminal device sends the first uplink information on the first uplink channel Receiving, by the first uplink channel, the first HARQ-ACK sent by the terminal device, and receiving, by the second uplink channel, the second HARQ-ACK sent by the terminal device.
The network device according to claim 36 or 37, wherein the first uplink channel is a short physical uplink control channel sPUCCH, and the second uplink channel is an extended physical uplink control channel ePUCCH or a physical uplink shared channel. PUSCH.
The network device according to claim 38, wherein the first uplink control information comprises at least one of the following: a sounding reference signal SRS, and channel state information CSI.
The network device according to claim 36 or 37, wherein the first uplink channel is a first extended physical uplink control channel ePUCCH, the second uplink channel is a second ePUCCH, or a physical uplink shared channel PUSCH .
The network device according to claim 40, wherein the first uplink control information comprises channel state information CSI.
The network device according to any one of claims 36 to 41, wherein the second downlink data channel set corresponding to the second HARQ-ACK includes the first downlink data channel corresponding to the first HARQ-ACK set.
The network device according to any one of claims 36 to 42, wherein the first uplink channel and the second uplink channel occupy different time domain resources.
The network device according to any one of claims 36-43, wherein the first uplink channel and the second uplink channel are in the same uplink transmission on the unlicensed spectrum.
A terminal device, the terminal device includes:

An acquiring module, configured to obtain first indication information, where the first indication information is used to indicate that the terminal device sends an uplink sounding reference signal on the first symbol of the first subframe;

a determining module, configured to determine a first window length according to the subframe information of the first subframe; the first window length is a contention window length of the terminal device performing channel idle evaluation; and a child of the first subframe The frame information includes at least one of: a subframe type of the first subframe, and a downlink symbol number in the first subframe;

An execution module, configured to perform channel idle evaluation according to the first window length; the channel idle evaluation is used to determine whether the uplink sounding reference signal is allowed to be sent on the first symbol of the first subframe;

And a sending module, configured to send the uplink sounding reference signal on the first symbol of the first subframe according to the first indication information when the channel idle evaluation succeeds.
The terminal device according to claim 45, wherein the subframe type is a special subframe or a normal subframe.
The terminal device according to claim 45 or 46, wherein the determining module is configured to: according to the subframe information of the first subframe, and the mapping relationship between the preset subframe information and the window length, Determining the first window length.
The terminal device according to claim 47, wherein the subframe information of the first subframe comprises: a subframe type of the first subframe;

The mapping relationship between the preset subframe information and the window length includes:

If the type of the first subframe is a special subframe, the length of the window corresponding to the first subframe information is a first preset value;

If the type of the first subframe is a normal subframe, the length of the window corresponding to the first subframe information is a second preset value; and the first preset value is smaller than the second preset value.
The terminal device according to claim 47, wherein the subframe information of the first subframe comprises: a number of downlink symbols in the first subframe;

The mapping relationship between the preset subframe information and the window length includes:

If the number of downlink symbols in the first subframe is less than the number of the first preset downlink symbols, The window length corresponding to the first subframe information is a third preset value;

If the number of the downlink symbols in the first subframe is greater than or equal to the number of the first preset downlink symbols, the window length corresponding to the first subframe information is a fourth preset value; The value is greater than the fourth preset value.
The terminal device according to claim 47, wherein the subframe information of the first subframe comprises: a subframe type of the first subframe and a downlink symbol number in the first subframe;

The mapping relationship between the preset subframe information and the window length includes:

If the type of the first subframe is a special subframe, and the number of downlink symbols in the first subframe is smaller than the number of second preset downlink symbols, the window length corresponding to the first subframe information is fifth. default value;

If the type of the first subframe is a special subframe, and the number of downlink symbols in the first subframe is greater than or equal to the number of the second preset downlink symbols, the window length corresponding to the first subframe information is The sixth preset value;

If the type of the first subframe is a normal subframe, the window length corresponding to the first subframe information is a seventh preset value;

The fifth preset value is greater than the sixth preset value, and the fifth preset value is less than or equal to the seventh preset value.
The terminal device according to any one of claims 45 to 50, wherein the obtaining module is further configured to: before the determining module determines the first window length according to the subframe information of the first subframe, Obtaining subframe information of the first subframe.
The terminal device according to any one of claims 45 to 51, wherein the execution module comprises:

a determining unit, configured to determine an initial value of the random backoff count of the channel idle evaluation according to the first window length;

And an execution unit, configured to perform channel idle evaluation according to the random backoff count initial value.