TW201737668A - Uplink transmission method, user equipment, base station and system - Google Patents

Abstract

Provided are an uplink transmission method, a user equipment (UE), a base station and a system. The method can comprise: receiving indication information sent by a base station; according to the indication information, determining a detection resource for performing listen before talk (LBT) detection; and performing the LBT detection at the detection resource to access a channel, and using the channel in a scheduled subframe to perform uplink transmission to the base station. The uplink transmission method in the present disclosure can save transmission resources.

Description

Uplink transmission method, user equipment, base station and system

The present invention belongs to the field of communication technologies, and in particular, to an uplink transmission method, a user equipment (UE, a base station, and a system).

As the volume of mobile data continues to grow, spectrum resources become more and more tense. Only the use of licensed spectrum resources for network deployment and service transmission may not meet the traffic demand. Therefore, the Long Term Evolution (LTE) system considers deploying transmissions on unlicensed spectrum resources, that is, Unlicensed LTE (U-LTE or LTE-U) to improve user experience and extended coverage.

At present, in order to support frequency selective scheduling for uplink transmission of multiple UEs, a sub-frame for transmitting a sounding reference signal (SRS) is configured in the LTE-U system, and the UE transmits SRS in the subframe to achieve frequency selectivity. Scheduling. The SRS symbol for transmitting the SRS during the actual transmission is always after the symbol of the uplink data of the PUSCH (Physical Uplink Shared Channel). For example, the last symbol in the subframe is the SRS symbol. However, in practical applications, there may be a SRS symbol transmission SRS of the UE in the subframe, so that the UE cannot access the channel in the next subframe of the subframe, thereby causing waste of transmission resources.

The invention provides an uplink transmission method, a UE, a base station and a system, which are solved The problem of wasted transmission resources.

Some embodiments of the present invention provide an uplink transmission method, including: receiving indication information sent by a base station; determining, according to the indication information, a detection resource that is detected by a Listening Before Talk (LBT); performing the LBT on the detection resource The access channel is detected, and the channel is used for uplink transmission to the base station in the scheduled subframe.

Optionally, the determining, according to the indication information, the detection resource for performing the LBT detection, includes: if the indication information indicates that the scheduled subframe is not configured with the LBT resource, the resource of the previous subframe of the scheduled subframe As a detection resource for performing the LBT detection.

Optionally, the resource of the previous subframe of the scheduled subframe is used as the detection resource for performing the LBT detection, and the SRS symbol of the previous subframe of the scheduled subframe is used as the LBT. The detected detection resource; or the idle resource of the previous subframe of the scheduled subframe is used as the detection resource for performing the LBT detection.

Optionally, the determining the detection resource for performing the LBT detection according to the indication information includes: if the indication information indicates that the scheduled subframe is configured with the LBT resource, performing the LBT resource configured in the scheduled subframe Detection resources for LBT operations.

Optionally, the method further includes: Receiving, by the base station, a signal indicating that the SRS symbol is occupied for uplink transmission; and the uplink transmission is performed to the base station by using the channel in the scheduled subframe, including: including the SRS symbol in the scheduled subframe according to the signal The channel is used for uplink transmission to the base station.

Some embodiments of the present invention further provide an uplink transmission method, including: sending indication information to a UE, so that the UE determines, according to the indication information, a detection resource for performing LBT detection, performing the LBT detection access channel on the detection resource; and receiving the The UE uses the uplink transmission performed by the channel in the scheduled subframe.

Optionally, the indication information indicates that the LBT resource is not configured in the scheduled subframe, so that the UE uses the resource of the previous subframe of the scheduled subframe as the detection resource for performing the LBT detection.

Optionally, the detection resource is an SRS symbol of a previous subframe of the scheduled subframe; or the detection resource is an idle resource of a previous subframe of the scheduled subframe.

Optionally, the indication information indicates that the scheduled subframe is configured with an LBT resource, so that the UE uses the LBT resource configured in the scheduled subframe as the detection resource for performing the LBT operation.

Optionally, the method further includes: sending, to the UE, a signal indicating that the SRS symbol is occupied for uplink transmission; and receiving, by the UE, uplink transmission by using the channel in the scheduled subframe, comprising: receiving, according to the signal, the UE The uplink transmission using the channel in the resource including the SRS symbol in the scheduled subframe.

Some embodiments of the present invention further provide a UE, including a processor, a transceiver, and a memory, wherein the processor is configured to read a computer readable program in the memory to perform an operation of: receiving, by the transceiver, a base station to send Instructing information; determining, according to the indication information, a detection resource for performing LBT detection; performing the LBT detection access channel in the detection resource, and using the channel to perform uplink transmission to the base station in the scheduled subframe; the transceiver is used by the transceiver Receiving and transmitting data under the control of the processor; the memory is used to store data used by the processor to perform operations.

Optionally, the processor is further configured to read a computer readable program in the memory to perform the following operations: if the indication information indicates that the scheduled subframe is not configured with LBT resources, the scheduled subframe is The resource of the previous subframe is used as a detection resource for performing the LBT detection.

Optionally, the processor is further configured to read a computer readable program in the memory to perform the following operations: using an SRS symbol of the previous subframe of the scheduled subframe as a detection resource for performing the LBT detection. Or the idle resource of the previous subframe of the scheduled subframe is used as the detection resource for performing the LBT detection.

Optionally, the processor is further configured to read a computer readable program in the memory to perform the following operations. If the indication information indicates that the scheduled subframe is configured with an LBT resource, the scheduled subframe is configured. The configured LBT resource is used as a detection resource for performing the LBT operation.

Optionally, the processor is further configured to read a computer readable program in the memory to perform the following operations: Receiving, by the base station, a signal indicating that the SRS symbol is occupied for uplink transmission; and according to the signal, the channel including the SRS symbol in the scheduled subframe includes uplink transmission to the base station.

Some embodiments of the present invention further provide a base station, including a processor, a transceiver, and a memory, wherein the processor is configured to read a computer readable program in the memory to perform the following operations: sending, by the transceiver, to the UE Instructing the UE to determine, according to the indication information, a detection resource for performing LBT detection, performing the LBT detection access channel on the detection resource, and receiving, by the transceiver, the UE using the channel in the scheduled subframe. Uplink transmission.

Optionally, the indication information indicates that the LBT resource is not configured in the scheduled subframe, so that the UE uses the resource of the previous subframe of the scheduled subframe as the detection resource for performing the LBT detection.

Optionally, the detection resource is an SRS symbol of a previous subframe of the scheduled subframe; or the detection resource is an idle resource of a previous subframe of the scheduled subframe.

Optionally, the indication information indicates that the scheduled subframe is configured with an LBT resource, so that the UE uses the LBT resource configured in the scheduled subframe as the detection resource for performing the LBT operation.

Optionally, the processor is further configured to read a computer readable program in the memory to perform the following operations: sending a signal to the UE indicating that the SRS symbol is occupied for uplink transmission; And receiving, by the transceiver, uplink transmission performed by the UE in the resource including the SRS symbol in the scheduled subframe according to the signal.

Some embodiments of the present invention further provide an uplink transmission system, including: a base station, configured to send indication information to a UE; the UE is configured to receive indication information sent by the base station; and the UE is further configured to determine, according to the indication information, that the LBT is performed. The detected detection resource; the UE is further configured to perform the LBT detection access channel in the detection resource, and use the channel to perform uplink transmission to the base station in the scheduled subframe; the base station is further configured to receive the UE The uplink transmission using the channel is performed in the scheduled subframe.

In the embodiment of the present invention, the indication information sent by the base station is received, and the detection resource for performing LBT detection is determined according to the indication information, and the LBT detection access channel is performed on the detection resource, and the channel is used in the scheduled subframe. The base station performs uplink transmission. In this way, the LBT access channel can be implemented according to the detection resource determined by the indication information, thereby avoiding the occurrence of the sub-frames that cannot access the channel, thereby saving transmission resources, thereby solving the problem of waste of transmission resources.

11‧‧‧User equipment

12‧‧‧Base station

201-203, 501-502‧‧ Method

61‧‧‧First Receiver Module

62‧‧‧Determining modules

1000‧‧‧ processor

1010‧‧‧ transceiver

1020‧‧‧ memory

1030‧‧‧User interface

1100‧‧‧ processor

63‧‧‧Transmission module

64‧‧‧second receiving module

81‧‧‧First Sending Module

82‧‧‧ receiving module

83‧‧‧second transmission module

1110‧‧‧ transceiver

1120‧‧‧ memory

1130‧‧‧User interface

121‧‧‧Base station

122‧‧‧User equipment

1 is a schematic structural diagram of a network according to an embodiment of the present invention; FIG. 2 is a schematic flowchart of an uplink transmission method according to an embodiment of the present invention; and FIG. 3 is a schematic diagram of a subframe transmission data according to an embodiment of the present invention; 4 is a schematic diagram of a sub-frame transmission data provided by an embodiment of the present invention; 5 is a schematic flowchart of an uplink transmission method according to an embodiment of the present invention; FIG. 6 is a schematic structural diagram of a UE according to an embodiment of the present invention; FIG. 7 is a schematic structural diagram of a UE according to an embodiment of the present invention; A schematic diagram of a structure of a base station according to an embodiment of the present invention; FIG. 9 is a schematic structural diagram of a base station according to an embodiment of the present invention; FIG. 10 is a schematic structural diagram of a UE according to an embodiment of the present invention; FIG. 12 is a schematic structural diagram of an uplink transmission system according to an embodiment of the present invention. FIG.

The technical problems, the technical solutions, and the advantages of the present invention will be more clearly described in the following description.

The embodiment of the present invention is directed to the related art that the UE does not transmit the SRS in the SRS symbol of the subframe, so that the UE cannot access the channel in the next subframe of the subframe, thereby causing waste of transmission resources, and providing an uplink transmission. Method, UE, base station and system. In the embodiment of the present invention, the detection information sent by the base station is used to determine the detection resource for performing LBT detection, so that the LBT detection access channel is performed on the detection resource, and the channel is used for uplink transmission in the scheduled subframe. To avoid the occurrence of sub-frames that cannot access the channel to save transmission resources.

Referring to FIG. 1, FIG. 1 is a schematic structural diagram of a network according to some embodiments of the present invention. As shown in FIG. 1, the UE 11 and the base station 12 are included. The UE 11 may be a terminal device that can access the network, such as a mobile phone, a tablet computer, a personal computer, a notebook computer, a wearable device, etc., and the specific type of the UE 11 is not limited in the embodiment of the present invention. The UE 11 can establish communication with the base station 12, which can be an evolved base station (eNB, evolved Node B) or Other base stations, it should be noted that the specific type of the base station 12 is not limited in the embodiment of the present invention.

Based on the network structure shown in FIG. 1, some embodiments of the present invention provide an uplink transmission method, as shown in FIG. 2, including the following steps:

201. Receive indication information sent by the base station.

202. Determine, according to the indication information, a detection resource that performs LBT detection.

203. Perform the LBT detection access channel in the detection resource, and use the channel to perform uplink transmission to the base station in the scheduled subframe.

In this embodiment, the indication information may be used to indicate that the detection resource for determining the LBT detection is determined, so that the step 202 may determine the detection resource according to the indication information. The foregoing detection resource can be understood as a starting resource for performing LBT detection, that is, step 202 can be understood as determining a starting position for performing LBT detection. Alternatively, the foregoing detection resource may also be understood as a resource required for performing LBT detection, that is, step 202 may be understood as determining a detection location for performing LBT detection. In addition, the foregoing detection resource may include one or more symbols, or the detection resource may further include a part of the content in a single symbol, etc., which is not limited in this embodiment. The symbol may be an Orthogonal Frequency Division Multiplexing (OFDM) symbol, or may be a Single-Carrier Frequency-Division Multiple Access (SC-FDMA) symbol. In addition, the foregoing uplink transmission may transmit an uplink data or an uplink signal, etc., which is not limited in this embodiment.

In this embodiment, the foregoing channel may be a physical uplink channel, for example, a Physical Uplink Shared Channel (PUSCH). Of course, in some scenarios, the channel may also be an uplink channel of other entities, for example, a physical layer is randomly stored. Take channel (PRACH, Physical Random Access Channel) and the like, which are not limited in this embodiment.

The scheduled subframe can be a subframe that is scheduled by the UE, or the scheduled subframe can also understand the current subframe, that is, the subframe that the UE currently uses after the UE accesses the channel. In addition, the scheduled subframe may be a subframe of a Frequency Division Duplexing (FDD) radio frame, or the scheduled subframe may be Time Division Duplexing (TDD). Sub-frames in the wireless frame, etc. In addition, the detection resource and the scheduled subframe may belong to the same radio frame, that is, step 202 may be: determining the detection resource in the radio frame, and performing in the scheduled subframe of the radio frame. Uplink transmission.

In addition, the uplink transmission may refer to an uplink transmission performed after the LBT detection successfully accesses the channel.

As an optional implementation, the step 202 may include: if the indication information indicates that the scheduled subframe is not configured with the LBT resource, the resource of the previous subframe of the scheduled subframe is used as the LBT detection. Detect resources.

The indication information may be explicit or implicit, indicating that the scheduled subframe is not configured with LBT resources. The explicit expression is understood to be that the indication information explicitly indicates that the LBT resource is not configured in the scheduled subframe, and the implicit expression may be that the indication information implicitly indicates that the scheduled subframe is not configured with LBT resources, for example: The indication information includes the LBT resource configuration field, but the field is internally 0, and the 0 can represent 0 symbols as the LBT resource, that is, the LBT resource is not configured. In addition, the previous subframe of the scheduled subframe may be the previous subframe of the scheduled subframe in the radio frame to which the scheduled subframe belongs. Not limited.

In this implementation manner, since the resource of the previous subframe of the scheduled subframe is used as the detection resource, step 203 may be to perform LBT detection on the resource of the previous frame of the scheduled subframe. Implement LBT detection before the boundary of the scheduled subframe, and start uplink transmission at the boundary of the scheduled subframe, so as to effectively utilize the resources of the previous frame of the scheduled subframe to avoid the previous subframe. Waste of resources.

Optionally, in this implementation manner, the step of using the resource of the previous subframe of the scheduled subframe as the detection resource for performing the LBT detection may include: exchanging the previous subframe of the scheduled subframe The SRS symbol of the frame is used as a detection resource for performing the LBT detection.

In this implementation manner, LBT detection can be performed on the SRS symbol of the previous subframe, so that uplink transmission can be started at the boundary of the scheduled subframe. For example, as shown in FIG. 3, UE1 and UE2 may perform LBT detection on the SRS symbol of subframe 1, so that UE1 and UE2 start uplink transmission at the boundary of subframe 2, where the above line is transmitted as uplink data. Give an example.

In this implementation manner, the uplink transmission may be started at the boundary of the scheduled subframe, that is, the LBT resource does not need to be configured for the scheduled subframe, for example, the idle channel evaluation time slot (CCA gap) is not configured for the scheduled subframe. Clear Channel Assessment gap), because the overhead of the CCA gap is large, the base station does not need to reserve a CCA gap for each subframe to save network transmission resources. In addition, since the small cell channel of the unlicensed band is slowly changed, the base station does not need to configure the SRS transmission for each SRS subframe. Therefore, the implementation adopts the SRS symbol time division multiplexing method to complete the SRS transmission. With channel access, no transmission resources are wasted. Of course, that In an embodiment, performing LBT detection on the SRS symbol of the previous subframe of the UE is only a special case in which the UE performs LBT detection before the scheduled subframe boundary according to the base station indication, and does not exclude that the UE can be at the boundary of the scheduled subframe. The previous multiple SC-FDMA symbols perform an LBT detection scenario.

In addition, in this implementation manner, the LBT detection may be performed by performing CCA at least 25us before the boundary of the scheduled subframe, that is, the SRS symbol is at least 25us apart from the scheduled subframe, and if the CCA result indicates that the channel is idle. Then, the UE access channel starts uplink transmission from the boundary of the scheduled subframe. Alternatively, the LBT detection may be performed to start CCA detection at the beginning of the empty SRS symbol, and the random back off counter starts to perform the countdown. If the channel is detected as idle before the scheduled subframe boundary, and the backoff is performed ( Back off) If the counter countdown is 0, the UE access channel is uplinked from the boundary of the scheduled subframe, otherwise the UE fails to access the uplink data. The foregoing LBT detection mode may be configured by the base station to the UE. Certainly, the manner in which the UE actively selects the LBT detection is not excluded in some scenarios, which is not limited in this embodiment.

In addition, the foregoing SRS symbol may be the last symbol in the subframe, or the SRS symbol may be other symbols of the subframe, which is not limited in this embodiment.

Optionally, in the foregoing implementation manner, the step of using the resource of the previous subframe of the scheduled subframe as the detection resource for performing the LBT detection may include: exchanging the previous subframe of the scheduled subframe The idle resource of the frame is used as a detection resource for performing the LBT detection.

In this implementation manner, the idle resource in the previous subframe of the scheduled subframe may be used as the detection resource, for example, the symbol that is idle in the previous subframe is used as the detection resource. In this embodiment, it is also possible to start at the boundary of the scheduled subframe. Line transmission, that is, there is no need to configure LBT resources for the scheduled subframe. In addition, the implementation of the LBT detection in this embodiment may refer to the LBT detection introduced in the above embodiment, and details are not described herein.

In an optional implementation manner, the determining, according to the indication information, the detection resource for performing the LBT detection, includes: if the indication information indicates that the scheduled subframe is configured with an LBT resource, configured in the scheduled subframe The LBT resource serves as a detection resource for performing the LBT operation.

In this implementation manner, the indication information may be explicit or implicit, indicating that the scheduled subframe is configured with an LBT resource. The explicit expression can be understood as that the indication information explicitly indicates that the scheduled subframe is configured with an LBT resource, and the implicit expression can be understood that the indication information implicitly indicates that the scheduled subframe is configured with an LBT resource, for example, the foregoing The indication information includes an LBT resource configuration field, but the field is internally 1 or 2, and the 1 or 2 may represent 1 or 2 symbols as the LBT resource.

In this implementation manner, the LBT resource may be a CCA gap, where the CCA gap may be 1-2 OFDM symbols, and the specific size needs a base station configuration. In this embodiment, step 203 may be to perform LBT detection on the CCA gap to access the channel. For example, the UE may start performing CCA at least 25us before the boundary of the resource used for uplink transmission in the scheduled subframe, and the CCA start and end points are completely within a symbol range before the resource starting point for uplink transmission. If the CCA result channel is idle, the UE access channel uses an incomplete (sub) subframe for uplink transmission. The resource used for uplink transmission in the scheduled subframe can be understood as an entity uplink channel resource of the scheduled subframe, for example, a PUSCH resource. In addition, the foregoing LBT detection may also be that the UE performs LBT detection from the start position of the CCA gap, performs a back off counter countdown, and is used for uplink transmission resources in the scheduled subframe. The pre-boundary channel is detected as idle, and the back off counter is counted as 0. The UE accesses the channel for uplink transmission. Otherwise, the UE fails to access the uplink data. This embodiment can implement LBT detection in the CCA gap before the subframe boundary, thereby avoiding resource waste caused by SRS blocking uplink data transmission. The foregoing LBT detection mode may be configured by the base station to the UE. Certainly, the manner in which the UE actively selects the LBT detection is not excluded in some scenarios, which is not limited in this embodiment.

In addition, in some scenarios, if the indication information indicates that the scheduled subframe is configured with LBT resources, this embodiment does not exclude that the UE may also use the resources of the previous frame of the scheduled subframe. The detection resource of the LBT detection is only an implementation manner in which the above-configured LBT resource is used as the above-described detection resource. And in some scenarios, the foregoing indication information may further indicate that the detection resource is determined according to a pre-negotiated determination rule, and the UE may use the determination rule to determine the detection resource. The determining rule may be that the UE and the base station pre-negotiate. For example, the determining rule may be that the resource of the previous subframe of the scheduled subframe is used as the detection resource, or the determining rule may be that the scheduled subframe is used. One or more resources in front of the box serve as the above detection resources.

Optionally, in this implementation manner, the foregoing method may further include: receiving a signal sent by the base station indicating that the SRS symbol is occupied for uplink transmission; and using the channel in the scheduled subframe to perform uplink to the base station. The transmitting step may include: using the channel to perform uplink transmission to the base station according to the signal in the resource including the SRS symbol in the scheduled subframe.

In an implementation manner, the SRS symbol of the subframe may be used for uplink transmission. Input, because SRS symbols are not scheduled for SRS transmission in some scenarios, so the SRS symbol is used for uplink transmission to avoid wasting empty SRS symbols. In addition, in this implementation manner, when no SRS transmission is scheduled in the previous subframe of the scheduled subframe, the UE may also use the SRS symbol of the previous subframe for uplink transmission, for example, as shown in FIG. The base station does not schedule the SRS symbol transmission SRS in the SRS subframe, and the CCA gap reserved by the base station in the scheduled frame is used for the LBT detection channel access, so that the above signal can indicate that the UE1 and the UE2 perform uplink transmission and occupy the SRS sub-signal. The SRS symbol of the frame, so that the SRS sub-frame transmits the complete sub-frame, instead of the original standard 13-symbol sub-frame, wherein the above-mentioned line transmission is an uplink data for illustration.

In this embodiment, the SRS symbol may be the last symbol in the subframe, or the SRS symbol may be other symbols of the subframe, which is not limited in this embodiment.

It should be noted that the multiple optional embodiments described above may be implemented in combination with each other, and may be implemented separately, which is not limited thereto.

It should be noted that the foregoing method may be applied to the unlicensed frequency band LTE (ie, LTE-U or U-LTE), that is, the foregoing channel may be a channel of an unlicensed frequency band. In addition, the above method can be applied to UEs in the network structure shown in FIG. 1.

In this embodiment, the indication information sent by the base station is received, and the detection resource for performing LBT detection is determined according to the indication information, and the LBT detection access channel is performed on the detection resource, and the channel is used in the scheduled subframe. The base station performs uplink transmission. In this way, the LBT access channel can be implemented according to the detection resource determined by the indication information, thereby avoiding the occurrence of the sub-frames that cannot access the channel, thereby saving transmission resources, thereby solving the problem of waste of transmission resources.

Based on the network structure shown in FIG. 1, some embodiments of the present invention provide another The line transfer method, as shown in Figure 5, includes the following steps:

501. Send the indication information to the UE, so that the UE determines, according to the indication information, a detection resource that performs LBT detection, where the LBT detection access channel is performed.

502. Receive an uplink transmission performed by the UE in the scheduled subframe by using the channel.

For the implementation of the steps 501 and 502, refer to the implementation manners of the steps 201, 202, and 203 in the embodiment shown in FIG. 2, and details are not described herein again.

As an optional implementation manner, the indication information may indicate that the scheduled subframe is not configured with the LBT resource, so that the UE uses the resource of the previous subframe of the scheduled subframe as the detection of the LBT detection. Resources.

Optionally, in this implementation manner, the detecting resource may be an SRS symbol of a previous subframe of the scheduled subframe; or the detecting resource may be idle of a previous subframe of the scheduled subframe Resources.

In this embodiment, reference may be made to the implementation manner in the embodiment shown in FIG. 2 that the indication information indicates that the LBT resource is not configured in the scheduled subframe, and details are not described herein again.

As an optional implementation manner, the indication information may indicate that the scheduled subframe is configured with an LBT resource, so that the UE uses the LBT resource configured in the scheduled subframe as the detection resource for performing the LBT operation.

Optionally, in this implementation manner, the foregoing method may further include: sending, to the UE, a signal indicating that the SRS symbol is occupied for uplink transmission; and receiving, by the UE, the uplink transmission performed by using the channel in the scheduled subframe The step may include: receiving, by the UE, the resource including the SRS symbol in the scheduled subframe according to the signal. Uplink transmission using this channel.

For the implementation of the embodiment, reference may be made to the implementation manner of the LBT resource indicating the configured subframe configuration in the embodiment shown in FIG. 2, and details are not described herein again.

It should be noted that the foregoing method may be applied to the unlicensed frequency band LTE (ie, LTE-U or U-LTE), that is, the foregoing channel may be a channel of an unlicensed frequency band. In addition, the above method can be applied to a base station in the network structure shown in FIG. 1.

In this embodiment, the indication information is sent to the UE, so that the UE determines the detection resource for performing the LBT detection according to the indication information, and performs the LBT detection access channel in the detection resource, and receives the UE to use the channel in the scheduled subframe. Uplink transmission. In this way, the detection resource determined by the UE can be used to perform the LBT access channel by indicating the information, thereby avoiding the occurrence of the sub-frame that cannot access the channel, thereby saving transmission resources, thereby solving the problem of waste of transmission resources.

Referring to FIG. 6, the structure of a UE is shown. The UE includes the following modules: a first receiving module 61, configured to receive indication information sent by the base station, and a determining module 62, configured to determine according to the indication information. The detection resource of the LBT detection; the transmission module 63 is configured to perform the LBT detection access channel in the detection resource, and use the channel to perform uplink transmission to the base station in the scheduled subframe.

As an optional implementation manner, the determining module 62 may be configured to: if the indication information indicates that the scheduled subframe is not configured with the LBT resource, perform the resource of the previous subframe of the scheduled subframe Detection resources for LBT detection.

Optionally, in this implementation manner, the determining module 62 is configured to use the SRS symbol of the previous subframe of the scheduled subframe as the detection resource for performing the LBT detection; or the determining module 62 may be configured to The idle resource of the previous sub-frame of the scheduled sub-frame For the detection of this LBT detection resource.

As an optional implementation manner, the determining module 62 may be configured to: when the indication information indicates that the scheduled subframe is configured with an LBT resource, and use the LBT resource configured in the scheduled subframe as the detection of the LBT operation. Resources.

Optionally, in this implementation manner, as shown in FIG. 7, the UE may further include: a second receiving module 64, configured to receive, by the base station, a signal indicating that the SRS symbol is occupied for uplink transmission; the transmission module 63 may be configured to use the channel to perform uplink transmission to the base station according to the signal in the resource including the SRS symbol in the scheduled subframe.

In this embodiment, the foregoing UE may be the UE in the embodiment shown in FIG. 1 to FIG. 5, and in any of the embodiments shown in FIG. 1 to FIG. 5, any implementation manner of the UE may be used in the UE in this embodiment. It is implemented and will not be described here. The above UE can save transmission resources.

Referring to FIG. 8, the structure of a base station is shown. The base station includes the following module: a first sending module 81, configured to send indication information to the UE, so that the UE determines to perform LBT detection according to the indication information. The resource is detected, and the LBT detection access channel is performed on the detection resource.

The receiving module 82 is configured to receive uplink transmission performed by the UE in the scheduled subframe by using the channel.

As an optional implementation manner, the indication information may indicate that the LBT resource is not configured in the scheduled subframe, so that the UE uses the resource of the previous subframe of the scheduled subframe as the detection of the LBT detection. Resources.

Optionally, in this implementation manner, the foregoing detection resource may be the scheduled sub-information The SRS symbol of the previous subframe of the frame; or the detection resource may be an idle resource of the previous subframe of the scheduled subframe.

As an optional implementation manner, the indication information may indicate that the scheduled subframe is configured with an LBT resource, so that the UE uses the LBT resource configured in the scheduled subframe as the detection resource for performing the LBT operation.

Optionally, in this implementation manner, as shown in FIG. 9, the base station may further include: a second sending module 83, configured to send, to the UE, a signal indicating that the SRS symbol is occupied for uplink transmission; and the receiving module 82 may use And receiving, by the UE, the uplink transmission performed by using the channel in the resource including the SRS symbol in the scheduled subframe according to the signal.

In this embodiment, the base station may be the base station in the embodiment shown in FIG. 1 to FIG. 5, and any implementation manner of the base station in the embodiment shown in FIG. 1 to FIG. 5 may be used in this embodiment. The implementation of the base station is not repeated here. The above base station can save transmission resources.

Referring to FIG. 10, the structure of a UE is shown. The UE includes: a processor 1000, a transceiver 1010, a memory 1020, a user interface 1030, and a bus interface. The processor 1000 is configured to read a memory. The program in 1020 performs the following process: receiving, by the transceiver 1010, the indication information sent by the base station; determining, according to the indication information, the detection resource for performing the LBT detection; performing the LBT detection access channel in the detection resource, and being in the scheduled subroutine The channel is used for uplink transmission to the base station.

The transceiver 1010 is configured to receive and send data under the control of the processor 1000.

In FIG. 10, the busbar architecture can include any number of interconnected busbars and bridges, specifically linked by one or more processors represented by processor 1000 and various circuits of memory represented by memory 1020. The busbar architecture can also couple various other circuits, such as peripherals, voltage regulators, and power management circuits, as is well known in the art, and therefore, will not be further described herein. The bus interface provides an interface. The transceiver 1010 can be a plurality of components, including a transmitter and a receiver, providing means for communicating with various other devices on a transmission medium. For different user devices, the user interface 1030 may also be an interface capable of externally connecting the required devices, including but not limited to a keypad, a display, a speaker, a microphone, a joystick, and the like.

The processor 1000 is responsible for managing the bus bar architecture and the usual processing, and the memory 1020 can store the data used by the processor 1000 when performing operations.

As an optional implementation manner, the foregoing determining, by the processor 1000, the detection resource that performs the LBT detection according to the indication information may include: if the indication information indicates that the scheduled subframe is not configured with the LBT resource, the scheduled child The resource of the previous subframe of the frame is used as a detection resource for performing the LBT detection.

Optionally, in this implementation manner, the resource that is executed by the processor 1000 in the previous subframe of the scheduled subframe is used as the detection resource for performing the LBT detection, and may include: before the scheduled subframe The sounding reference signal SRS symbol of a subframe is used as a detection resource for performing the LBT detection; or the idle resource of the previous subframe of the scheduled subframe is used as a detection resource for performing the LBT detection.

As an optional implementation manner, the processor 1000 performs the indication according to the instruction The determining the detection resource for the LBT detection may include: if the indication information indicates that the scheduled subframe is configured with the LBT resource, the LBT resource configured in the scheduled subframe is used as the detection resource for performing the LBT operation.

Optionally, in this implementation manner, the processor 1000 may further perform the following process: receiving, by the base station, a signal indicating that the SRS symbol is occupied for uplink transmission; and the processor 1000 performs the use of the channel in the scheduled subframe. The uplink transmission of the base station may include: using the channel to perform uplink transmission to the base station according to the signal in the resource including the SRS symbol in the scheduled subframe.

In this embodiment, the foregoing UE may be the UE in the embodiment shown in FIG. 1 to FIG. 5, and any implementation manner of the UE in the embodiment shown in FIG. 1 to FIG. 5 may be used by the UE in this embodiment. Implementation, no longer elaborate here. The above UE can save transmission resources.

Referring to FIG. 11, a base station structure is shown. The base station includes: a processor 1100, a transceiver 1110, a memory 1120, a user interface 1130, and a bus interface. The processor 1100 is configured to read The program in the memory 1120 performs the following process: sending, by the transceiver 1110, the indication information to the UE, so that the UE determines the detection resource for performing LBT detection according to the indication information, and performs the LBT detection access channel in the detection resource; The transceiver 1110 receives the uplink transmission performed by the UE in the scheduled subframe.

The transceiver 1110 is configured to receive and send data under the control of the processor 1100.

Wherein, in FIG. 11, the bus bar architecture may include any number of interconnected bus bars and bridges, specifically one or more processors and memory 1120 represented by the processor 1100. The various circuits of the representative memory are linked together. The busbar architecture can also couple various other circuits, such as peripherals, voltage regulators, and power management circuits, as is well known in the art, and therefore, will not be further described herein. The bus interface provides an interface. The transceiver 1110 can be a plurality of components, including a transmitter and a transceiver, providing means for communicating with various other devices on a transmission medium. The processor 1100 is responsible for managing the bus bar architecture and the usual processing, and the memory 1120 can store the data used by the processor 1100 when performing operations.

The processor 1100 is responsible for managing the bus bar architecture and the usual processing, and the memory 1120 can store the data used by the processor 1100 when performing operations.

As an optional implementation manner, the indication information may indicate that the LBT resource is not configured in the scheduled subframe, so that the UE uses the resource of the previous subframe of the scheduled subframe as the detection of the LBT detection. Resources.

Optionally, in this implementation manner, the detecting resource may be an SRS symbol of a previous subframe of the scheduled subframe; or the detecting resource may be idle of a previous subframe of the scheduled subframe Resources.

As an optional implementation manner, the indication information may indicate that the scheduled subframe is configured with an LBT resource, so that the UE uses the LBT resource configured in the scheduled subframe as the detection resource for performing the LBT operation.

Optionally, in this implementation manner, the processor 1100 may further perform the following process: sending a signal indicating that the SRS symbol is occupied for uplink transmission to the UE; and receiving, by the processor 1100, the UE is in the scheduled subframe by using the transceiver 1110. Uplink transmission using this channel, including: The uplink transmission performed by the UE in the resource including the SRS symbol in the scheduled subframe according to the signal is received by the transceiver 1110.

In this embodiment, the base station may be the base station in the embodiment shown in FIG. 1 to FIG. 5, and any implementation manner of the base station in the embodiment shown in FIG. 1 to FIG. 5 may be used in this embodiment. The implementation of the base station is not repeated here. The above base station can save transmission resources.

Referring to FIG. 12, a structure of an uplink transmission system is shown. The system includes: a base station 121, configured to send indication information to the UE 122, and a UE 122, configured to receive indication information sent by the base station; the UE 122 is further configured to: according to the indication The information is used to determine the detection resource for the LBT detection; the UE 122 is further configured to perform the LBT detection access channel in the detection resource, and use the channel to perform uplink transmission to the base station in the scheduled subframe; the base station 121 is also used to The receiving UE 122 performs uplink transmission using the channel in the scheduled subframe.

In this embodiment, the base station 121 and the UE 122 may be the base station and the UE described in the embodiments shown in FIG. 1 to FIG. 11. The implementation manners of the base station 121 and the UE are as shown in the embodiments shown in FIG. 1 to FIG. The technical effects will not be described here.

In the several embodiments provided in the present application, it should be understood that the disclosed method and apparatus may be implemented in other manners. For example, the device embodiments described above are merely illustrative. For example, the division of the unit is only a logical function division, and the actual implementation may have another division manner, for example, multiple units or components may be combined or integrated. Go to another system, or some features can be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed may be through some interface, device or unit. The indirect coupling or communication connection can be in electrical, mechanical or other form.

In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may be physically included, or two or more units may be integrated into one unit. The above integrated unit can be implemented in the form of a hardware or a hardware plus a soft functional unit.

The integrated unit described above in the form of a software functional unit can be stored in a computer readable storage medium. The software functional unit is stored in a storage medium and includes a plurality of instructions for causing a computer device (which may be a personal computer, a server, a network device, etc.) to perform part of the steps of the transmitting and receiving method according to various embodiments of the present invention. The foregoing storage medium includes: a USB hard disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or a compact disk. The medium in which the code is stored.

The above is a preferred embodiment of the present invention, and it should be noted that those skilled in the art can also make several improvements and retouchings without departing from the principles of the present invention. It should be considered as the scope of protection of the present invention.

201-203‧‧‧Steps

Claims (21)

An uplink transmission method includes: receiving indication information sent by a base station; determining, according to the indication information, a detection resource for performing LBT detection; performing the LBT detection access channel in the detection resource, and being in a scheduled subroutine The channel is used for uplink transmission to the base station. The uplink transmission method of claim 1, wherein the determining the detection resource for performing the LBT detection according to the indication information comprises: if the indication information indicates that the scheduled subframe is not configured with the LBT resource, the scheduled message is The resource of the previous subframe of the frame serves as a detection resource for performing the LBT detection. The uplink transmission method of claim 2, wherein the resource of the previous subframe of the scheduled subframe is used as the detection resource for performing the LBT detection, including: the previous one of the scheduled subframe The sounding reference signal (SRS) symbol of the subframe is used as the detection resource for performing the LBT detection; or the idle resource of the previous subframe of the scheduled subframe is used as the detection resource for performing the LBT detection. The uplink transmission method of claim 1, wherein the determining the detection resource for performing the LBT detection according to the indication information comprises: if the indication information indicates that the scheduled subframe is configured with an LBT resource, the scheduled message is sent The LBT resource configured in the box serves as a detection resource for performing the LBT operation. The uplink transmission method of claim 4, further comprising: receiving a signal sent by the base station indicating that the SRS symbol is occupied for uplink transmission; The uplink transmission to the base station by using the channel in the scheduled subframe includes: using the channel to perform uplink transmission to the base station according to the signal in the resource including the SRS symbol in the scheduled subframe. An uplink transmission method includes: sending an indication information to a user equipment (UE), so that the UE determines, according to the indication information, a detection resource that performs a Listening and Listening (LBT) detection, where the LBT detection access is performed on the detection resource. Channel; receiving the uplink transmission performed by the UE in the scheduled subframe by using the channel. The uplink transmission method of claim 6, wherein the indication information indicates that the LBT resource is not configured in the scheduled subframe, so that the UE uses the resource of the previous subframe of the scheduled subframe as the Detection resources for LBT detection. The uplink transmission method of claim 7, wherein the detection resource is a sounding reference signal (SRS) symbol of a previous subframe of the scheduled subframe; or the detection resource is the scheduled subframe The idle resource of the previous sub-frame. The uplink transmission method of claim 6, wherein the indication information indicates that the scheduled subframe is configured with an LBT resource, so that the UE uses the LBT resource configured in the scheduled subframe as the LBT operation. Detect resources. The uplink transmission method of claim 9, further comprising: transmitting, to the UE, a signal indicating that the SRS symbol is occupied for uplink transmission; and receiving the uplink transmission performed by the UE in the scheduled subframe by using the channel, including: Receiving uplink transmission by the UE using the channel in the resource including the SRS symbol in the scheduled subframe according to the signal. A user equipment (UE) includes a processor, a transceiver, and a memory; wherein the processor is configured to read a computer readable program in the memory to perform the following operations: receiving, by the transceiver, indication information sent by the base station Determining, according to the indication information, a detection resource for performing LBT detection; performing the LBT detection access channel in the detection resource, and using the channel to perform uplink transmission to the base station in the scheduled subframe; The transceiver is configured to receive and transmit data under the control of the processor; the memory is used to store data used by the processor to perform operations. The user equipment (UE) of claim 11, wherein the processor is further configured to read a computer readable program in the memory to perform the following operations: if the indication information indicates that the scheduled subframe is not The LBT resource is configured, and the resource of the previous subframe of the scheduled subframe is used as the detection resource for performing the LBT detection. The user equipment (UE) of claim 12, wherein the processor is further configured to read a computer readable program in the memory to perform the following operation: the previous message of the scheduled subframe The sounding reference signal (SRS) symbol of the frame is used as a detection resource for performing the LBT detection; or the idle resource of the previous subframe of the scheduled subframe is used as a detection resource for performing the LBT detection. The user equipment (UE) of claim 11, wherein the processor is further configured to read a computer readable program in the memory to perform the following operations: if the indication information indicates that the The LBT resource is configured in the subframe, and the LBT resource configured in the scheduled subframe is used as the detection resource for performing the LBT operation. The user equipment (UE) of claim 14, wherein the processor is further configured to read a computer readable program in the memory to perform the following operations: receiving an indication sent by the base station to occupy an SRS symbol for uplink The transmitted signal is used to perform uplink transmission to the base station according to the signal in the resource including the SRS symbol in the scheduled subframe. A base station includes a processor, a transceiver, and a memory; wherein the processor is configured to read a computer readable program in the memory to perform an operation of transmitting an indication information to a user equipment (UE) through the transceiver, So that the UE determines, according to the indication information, a detection resource that performs LBT detection, and performs the LBT detection access channel on the detection resource; and receives, by the transceiver, the UE to use the subframe in the scheduled subframe. Uplink transmission by the channel; the transceiver is configured to receive and transmit data under the control of the processor; the memory is used to store data used by the processor to perform operations. The base station of claim 16, wherein the indication information indicates that the LBT resource is not configured in the scheduled subframe, so that the UE uses the resource of the previous subframe of the scheduled subframe as the LBT. Detection resources detected. The base station according to claim 17, wherein the detection resource is a sounding reference signal (SRS) symbol of a previous subframe of the scheduled subframe; or the detection resource is a front of the scheduled subframe An idle resource of a sub-frame. The base station according to claim 16, wherein the indication information indicates that the scheduled subframe is configured with an LBT resource, so that the UE configures the LBT resource in the scheduled subframe as a detection resource for performing the LBT operation. . The base station of claim 19, wherein the processor is further configured to read a computer readable program in the memory to perform the following operations: transmitting, to the UE, a signal indicating that the SRS symbol is occupied for uplink transmission; The transceiver receives the uplink transmission performed by the UE in the resource including the SRS symbol in the scheduled subframe according to the signal. An uplink transmission system, comprising: a base station, configured to send indication information to a user equipment (UE); the UE is configured to receive indication information sent by the base station; and the UE is further configured to determine, according to the indication information, that the first listening is performed The detection resource of the (LBT) detection; the UE is further configured to perform the LBT detection access channel in the detection resource, and use the channel to perform uplink transmission to the base station in the scheduled subframe; the base station also uses Receiving uplink transmission performed by the UE in the scheduled subframe by using the channel.