CN107113873B

CN107113873B - Uplink data transmission method and UE

Info

Publication number: CN107113873B
Application number: CN201580071605.2A
Authority: CN
Inventors: 郑娟; 官磊; 李强
Original assignee: Zhuji Yuanchang Information Technology Consulting Service Department
Current assignee: Zhuji Zhicheng Business Agent Co.,Ltd.
Priority date: 2015-10-30
Filing date: 2015-10-30
Publication date: 2020-07-31
Anticipated expiration: 2035-10-30
Also published as: WO2017070953A1; CN107113873A

Abstract

The invention provides an uplink data transmission method and UE, relates to the field of communication, and aims to transmit uplink data by applying an unlicensed spectrum to the UE, so that the gain of uplink multi-user scheduling of an eNB can be ensured, and the UE served by the eNB cannot interfere with the uplink data transmission of each other. The method comprises the following steps: the method comprises the steps that a first UE determines a standby channel and a data transmission period of the first UE, and determines whether data are transmitted according to a preset rule in the data transmission period; if the first UE determines to transmit data according to a preset rule, the first UE determines to transmit data only at other moments except a preset time length in the data transmission period, and the second UE carries out channel interception on a standby channel of the second UE in the preset time length; and the access network equipment of the first UE and the second UE is the same.

Description

Uplink data transmission method and UE

Technical Field

The present invention relates to the field of communications, and in particular, to an uplink data transmission method and a User Equipment (UE).

Background

L AA-L TE (L licensed Assisted Access Using-L ong Term Evolution, licensed Assisted Access long Term Evolution) system, L TE equipment may use a licensed spectrum as a Primary Component Carrier (PCC) or a Primary Cell (PCell) in a CA (Carrier Aggregation) manner, and use an unlicensed spectrum as a Secondary Component Carrier (SCC) or a Secondary Cell (SCell), so that L TE equipment may achieve the purpose of network capacity offloading by Using unlicensed spectrum resources, thereby reducing the load of the licensed Carrier.

L AA-L TE system, eNB (Evolved Node B, enodeb) may perform uplink multiuser scheduling, and based on the scheduling of eNB, each UE (User Equipment) served by eNB may perform uplink data transmission simultaneously or in time division, when the unlicensed spectrum is applied, UE may follow L BT (L interfering before Talk) rule, i.e. before UE transmits data on a certain channel, UE needs to detect whether the channel is idle or not, and only when the channel is detected to be idle, UE may transmit data through the channel.

Disclosure of Invention

Embodiments of the present invention provide an uplink data transmission method and UE, where UEs served by an eNB do not interfere with uplink data transmission of each other, so that a gain of uplink multi-user scheduling of the eNB can be ensured, and flexible scheduling of uplink multi-users can be achieved.

In order to achieve the above purpose, the embodiment of the invention adopts the following technical scheme:

in a first aspect, a method for uplink data transmission is disclosed, including:

the first UE determines own standby channel and the data transmission period of the first UE. The data transmission period refers to a period in which the first UE transmits uplink data through the inactive channel. In the present invention, the first and second are not represented by priority order, but merely to distinguish different UEs. The inactive channel here includes a channel configured by the access network device for the UE, and also includes a channel used by the access network device for scheduled data transmission for the UE. The access network equipment comprises a base station and a cell governed by the base station, such as a service node of a UE. And data transmission can be carried out between the access network equipment and the UE.

The first UE determines whether to transmit data according to a preset rule in the data transmission period, namely whether to leave a space for a period of time in the transmission period without carrying out data transmission and channel interception;

if the first UE determines to transmit data according to the preset rule, the first UE determines to transmit data only at other moments except the preset time length in the data transmission period, namely, the data is not transmitted in the preset time length and the channel interception is not performed on the standby channel, and the second UE performs the channel interception on the standby channel of the second UE in the preset time length; wherein the first UE is the same as the access network equipment of the second UE. For example, the first UE and the second UE are both UEs served by a base station a, and both access the network through the base station a.

In the prior art, a base station instructs a first UE and a second UE to transmit uplink data using a certain channel, and if the first UE performs channel listening on the channel by the second UE in a period in which the first UE transmits data using the channel, and the listening result is that the channel is occupied, the second channel does not use the channel to perform uplink data transmission at the time indicated by the base station, which affects the gain of multiuser scheduling. When the first UE does not perform data transmission and does not perform channel sensing on the channel within the preset duration of the data transmission period of the first UE, the result of the channel sensing performed on the channel by the second UE is idle, and the second UE transmits uplink data through the channel at the indicated time according to the scheduling instruction of the base station, so that the UEs serving the same node do not interfere with each other's data transmission and the gain of multiuser scheduling is not affected.

With reference to the first aspect, in a first possible implementation manner of the first aspect, the first UE receives a first indication signaling before determining whether to transmit data according to a preset rule in the data transmission period, and determines an index of a time position of a time unit where the preset duration is located according to the first indication signaling. It should be noted that the time unit described herein is any one time unit included in the data transmission cycle. The time unit may be a subframe, but is not limited to a subframe, and may also be a slot, an OFDM symbol, and the like. The index of the time position may be an index number of a subframe, or may be a slot index number or an OFDM symbol index number.

Or, the first UE may further determine, according to a predefined time parameter, an index of a time position of a time unit where the preset duration is located.

Of course, the first UE may also determine the index of the time position of the time unit where the preset duration is located according to any one of the two manners provided herein after the data transmission period transmits data according to the preset rule. In addition, the base station may directly notify, through the first indication signaling, the first UE of the index of the time position of the time unit where the preset duration is located.

In this way, the first UE can determine when to leave empty (not performing data transmission and not performing channel sensing) in the data transmission period, and the second UE can perform channel sensing in the time period of leaving empty, and the first UE does not interfere with the result of channel sensing of the second UE.

With reference to the first possible implementation manner of the first aspect, in a second possible implementation manner of the first aspect, the first UE acquires an offset parameter a and a period parameter b that are carried by the first indication signaling, and determines an index of a time position of a time unit where the preset duration is located according to the offset parameter a and the period parameter b.

Further, after acquiring the offset parameter a and the period parameter b carried by the first indication signaling, the first UE may determine, according to a formula X mod b ═ a or (X-a) mod b ═ 0, an index X of a time position of a time unit where the preset duration is located. Where mod represents the remainder operation.

Specifically, in the two indexes for determining the time position of the time unit where the preset time duration is located, how to determine the time unit where the preset time duration is located according to the first indication signaling notified by the base station is specifically described herein.

With reference to the first or second possible implementation manner of the first aspect, in a third possible implementation manner of the first aspect, the first UE determines whether to receive a second indication signaling before transmitting data according to a preset rule in the data transmission period, and determines a time length of the preset duration according to the second indication signaling; or, the first UE determines the time length of the preset time length according to a predefined time length parameter.

Of course, the first UE may also determine the time length of the preset duration according to any one of the two manners provided herein after the data transmission period transmits data according to a preset rule.

Further, the time length of the preset time length is greater than or equal to the time length of the second UE performing channel sensing on the standby channel of the second UE.

Therefore, the first UE can determine how long the space is left in the data transmission period, the second UE can carry out channel sensing in the space-left time period, and the first UE cannot interfere with the channel sensing result of the second UE.

With reference to any one of the first to third possible implementation manners of the first aspect, in a fourth possible implementation manner of the first aspect, the first UE receives a third indication signaling, where the third indication signaling is used to indicate whether the first UE transmits data according to a preset rule in the data transmission period. Whether data is transmitted according to a preset rule in the data transmission period can be determined according to the third indication signaling;

or, the first UE may further determine whether to transmit data according to a preset rule in the data transmission period according to a predefined mode parameter.

With reference to the first aspect or any one of the first to fourth possible implementation manners of the first aspect, in a fifth possible implementation manner of the first aspect, the first UE further needs to perform channel transmission on the channel to be used in a listening period before data transmission, and ensure that data transmission is performed after the channel to be used is idle. The listening period precedes the data transmission period. Preferably, the listening period precedes the data transmission period and an end time of the listening period is the same as a start time of the data transmission period.

And if the result of the channel interception of the standby channel is idle and the first UE determines to transmit data according to the preset rule, transmitting the data through the standby channel at the starting moment of the data transmission period and transmitting the data only at other moments except the preset time length in the data transmission period. Namely, the first UE does not perform data transmission or channel interception within the preset time length.

In addition, if the first UE determines that data is not transmitted according to the preset rule, the first UE continues to use the channel to transmit data in a data transmission period.

In a second aspect, a first UE is disclosed, comprising:

a first determining unit, configured to determine a standby channel of the first UE and a data transmission period of the first UE; the data transmission period refers to a period in which the first UE transmits uplink data through the standby channel;

a second determining unit, configured to determine whether to transmit data according to a preset rule in the data transmission period, that is, whether to leave a space for a period of time in the transmission period without performing data transmission and channel sensing;

the second determination is further configured to, if the first UE determines to transmit data according to the preset rule, determine to transmit data only at other times except for a preset duration within the data transmission period, and perform channel interception on a standby channel of the second UE within the preset duration by the second UE; wherein the first UE is the same as the access network equipment of the second UE.

When the first UE does not perform data transmission and does not perform channel sensing on the channel within the preset duration of the data transmission period of the first UE, the result of the channel sensing performed on the channel by the second UE is idle, and the second UE transmits uplink data through the channel at the indicated time according to the scheduling instruction of the base station, so that the UEs serving the same node do not interfere with each other's data transmission and the gain of multiuser scheduling is not affected.

With reference to the second aspect, in a first possible implementation manner of the second aspect, the first UE further includes a receiving unit.

The receiving unit is used for receiving a first indication signaling;

the second determining unit is configured to determine, according to the first indication signaling received by the receiving unit, an index of a time position of a time unit in which the preset duration is located, where the time unit is any one time unit included in the data transmission cycle;

or the second determining unit is configured to determine, according to a predefined time parameter, an index of a time position of a time unit where the preset duration is located.

Of course, the second determining unit may also determine, after the data is transmitted according to a preset rule in the data transmission period, an index of the time position of the time unit of the preset duration according to the received first indication signaling or the predefined time parameter. In addition, the base station may directly notify, through the first indication signaling, the first UE of the index of the time position of the time unit where the preset duration is located.

With reference to the first possible implementation manner of the second aspect, in a second possible implementation manner of the second aspect, the second determining unit is specifically configured to obtain an offset parameter a and a period parameter b carried by the first indication signaling, and determine, according to the offset parameter a and the period parameter b, an index of a time position of a time unit in which the preset duration is located.

With reference to the second possible implementation manner of the second aspect, in a third possible implementation manner of the second aspect, the index X of the time position of the time unit where the preset duration is located is determined according to X mod b ═ a or (X-a) mod b ═ 0.

With reference to any one of the first to third possible implementation manners of the second aspect, in a fourth possible implementation manner of the second aspect,

the receiving unit is further configured to receive a second indication signaling;

the second determining unit is configured to determine a time length of the preset duration according to the second indication signaling;

or, the second determining unit is configured to determine the time length of the preset time length according to a predefined time length parameter.

Of course, the second determining unit may also determine, after the data is transmitted according to the preset rule in the data transmission period, an index of the time position of the time unit where the preset duration is located according to the second indication signaling or the predefined duration parameter.

With reference to the third possible implementation manner of the second aspect, in a fifth possible implementation manner of the second aspect, the time length of the preset time length is greater than or equal to the time length of the second UE performing channel sensing on the standby channel of the second UE.

With reference to any one of the first to fifth possible implementations of the second aspect, in a sixth possible implementation of the second aspect,

the receiving unit is further configured to receive a third indication signaling;

the second determining unit is specifically configured to determine, according to the third indication signaling received by the third receiving unit, whether to transmit data according to a preset rule in the data transmission period; the third indication signaling is used for indicating whether the first UE transmits data according to a preset rule in the data transmission period;

or the like, or, alternatively,

the second determining unit is specifically configured to determine whether to transmit data according to a preset rule in the data transmission period according to a predefined mode parameter.

With reference to the second aspect or any one of the first to fifth possible implementation manners of the second aspect, in a sixth possible implementation manner of the second aspect, the method further includes a listening unit, a transmitting unit,

the monitoring unit is used for carrying out channel monitoring on the standby channel in a monitoring period; the listening period precedes the data transmission period;

the transmission unit is configured to transmit data through the standby channel at the start time of the data transmission period and transmit data only at other times except for a preset time duration within the data transmission period if the result of the channel sensing performed on the standby channel by the sensing unit is idle and the second determining unit determines to transmit data according to the preset rule.

In a third aspect, a first UE is disclosed, comprising:

a processor configured to determine a standby channel of the first UE and a data transmission period of the first UE; the data transmission period refers to a period in which the first UE transmits uplink data through the standby channel;

the processor is further configured to determine whether to transmit data according to a preset rule in the data transmission period; if the first UE determines to transmit data according to the preset rule, the first UE determines to transmit data only at other moments except the preset time length in the data transmission period, and the second UE carries out channel interception on a standby channel of the second UE in the preset time length; wherein the first UE is the same as the access network equipment of the second UE.

With reference to the third aspect, in a first possible implementation manner of the third aspect, the method further includes a transceiver,

the transceiver is used for receiving a first indication signaling;

the processor is further configured to determine, according to the first indication signaling received by the transceiver, an index of a time position of a time unit in which the preset duration is located, where the time unit is any one time unit included in the data transmission cycle;

or the processor is used for determining the index of the time position of the time unit where the preset time length is located according to the predefined time parameter.

With reference to the first possible implementation manner of the third aspect, in a second possible implementation manner of the third aspect, the processor is specifically configured to obtain an offset parameter a and a cycle parameter b carried by the first indication signaling, and determine, according to the offset parameter a and the cycle parameter b, an index of a time position of a time unit where the preset duration is located.

With reference to the second possible implementation manner of the third aspect, in a third possible implementation manner of the third aspect, the processor is specifically configured to determine, according to X mod b ═ a or (X-a) mod b ═ 0, an index X of a time position of a time unit in which the preset duration is located.

With reference to any one of the first to third possible implementation manners of the third aspect, in a fourth possible implementation manner of the third aspect,

the transceiver is further configured to receive a second indication signaling;

the processor is configured to determine a time length of the preset duration according to the second indication signaling;

or the processor is used for determining the time length of the preset time length according to a predefined time length parameter.

With reference to the fourth possible implementation manner of the third aspect, in a fifth possible implementation manner of the third aspect, the time length of the preset time duration is greater than or equal to the time length of the time for the second UE to perform channel sensing on the standby channel of the second UE.

With reference to any one of the first to fifth possible implementation manners of the third aspect, in a sixth possible implementation manner of the third aspect,

the transceiver is further configured to receive a third indication signaling;

the processor is specifically configured to determine whether to transmit data according to a preset rule in the data transmission period according to the third indication signaling received by the third receiving unit; the third indication signaling is used for indicating whether the first UE transmits data according to a preset rule in the data transmission period;

or the like, or, alternatively,

the processor is specifically configured to determine whether to transmit data according to a preset rule in the data transmission period according to a predefined mode parameter.

With reference to the third aspect or any one of the first to sixth possible implementation manners of the third aspect, in a seventh possible implementation manner of the third aspect, the method further includes a listening module,

the interception module is used for carrying out channel interception on the standby channel in an interception period; the listening period precedes the data transmission period;

the processor is configured to transmit data through the transceiver at a start time of the data transmission period by using the standby channel and transmit data only at other times except for a preset duration in the data transmission period if a result of the channel interception performed on the standby channel by the interception module is idle and it is determined that data is transmitted according to the preset rule.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic diagram of an L AA-L TE system according to an embodiment of the present invention;

fig. 2 is a schematic diagram of aligning and listening by a ue during multi-user scheduling of a base station according to an embodiment of the present invention;

fig. 3 is a schematic flowchart of an uplink data transmission method according to embodiment 1 of the present invention;

fig. 4 is a schematic structural diagram of an FFP provided in embodiment 1 of the present invention;

fig. 5 is a timing diagram illustrating a UE transmitting data according to a preset rule according to embodiment 1 of the present invention;

fig. 6 is another timing diagram illustrating a UE transmitting data according to a preset rule according to embodiment 1 of the present invention;

fig. 7 is a block diagram of a first UE according to embodiment 2 of the present invention;

fig. 8 is another block diagram of a first UE according to embodiment 2 of the present invention;

fig. 9 is a block diagram of a first UE according to embodiment 3 of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1, L AA-L TE system at least includes a base station and a plurality of UEs serving the base station, the plurality of UEs may use an unlicensed spectrum jointly, based on configuring carriers on an operator licensed spectrum for communication, configuring carriers on the plurality of unlicensed spectrum and performing communication on the unlicensed carriers with the assistance of licensed carriers, one of the advantages of L AA-L TE system over WiFi system is gain of uplink multiuser scheduling, eNB may implement simultaneous scheduling of a plurality of users, specifically may implement in a Frequency Division Multiplexing (FDM) manner within one subframe, or may implement in a Time-Division multiple-input multiple-output (MU-input multiple-output, MU-output) manner on the same multiuser Time and Frequency resources, furthermore, L AA-L TE system uplink scheduling gain of multiuser is also implemented in a Time-Division Multiplexing (TDM-input multiple-output, MU-output) manner, further, the uplink scheduling gain of the MIMO AA-L TE system is also implemented in a Time-Division multiple-input multiple-output (TDM-output, TDM-based on uplink scheduling, a resource scheduling method, a wireless uplink scheduling, a wireless communication system, UE transmitting uplink data transmission Time-shared resource, and a wireless data transmission technology, such as uplink scheduling, a wireless network, a.

An operator can achieve the purpose of network capacity distribution by using unlicensed spectrum resources, but the requirement of specification of different regions and different spectrums on the unlicensed spectrum resources is required to be met, wherein the unlicensed target Frequency band considered by L AA-L TE is a 5GHz unlicensed Frequency band opened by each government, TPC (Transmit Power Control), DFS (Dynamic Frequency Selection), channel occupied bandwidth and L BT (L isten Before Talk) and the like, wherein the 5.25-5.35 GHz and the 5.47-5.725 GHz are the working Frequency bands of the global radar system, wireless communication equipment working in the 5GHz band must have two functions of TPC and DFS in order to prevent the wireless product from transmitting excessive Power to interfere with the radar system, the DFS actively detects the Frequency used by the wireless product and selects another Frequency, the wireless communication equipment working in the 5GHz band must have two functions of TPC and DFS in order to prevent the wireless product from transmitting excessive Power to interfere with the radar, the wireless communication equipment working Frequency band is required to achieve the requirement of the active bandwidth of the BT, the BT 5GHz is required bandwidth of the wireless communication channel occupied by the wireless product when the wireless communication equipment is used in the wireless system, the BT 5GHz, the BT 5-1 communication-5-1 communication-1.

It should be noted that, the basic idea of L BT is that, before each communication device sends a signal on a certain Channel, it needs to detect whether the current Channel is idle, that is, it can detect whether a nearby node is occupying the Channel to send the signal, this detection process is called Clear Channel Assessment (CCA), if it detects that the Channel is idle for a period of time, the communication device can send the signal, if it detects that the Channel is occupied, the communication device cannot currently send the signal.

The UE1 and UE2 may not perform uplink data transmission at the time indicated by the base station, because the signal energy of the data transmitted by UE1 on channel a leaks to channel B to be monitored by UE2, and the leaked energy may affect the channel detection result of UE2, and thus UE2 may also consider the detection result of channel B as unavailable by detecting that the data is not transmitted by UE2 at the time indicated by the base station.

Specifically, based on Uplink scheduling of the eNB, any UE L AA-L TE serving the UE has an explicit starting location for Uplink data transmission, and since the eNB schedules the UEs at the same time, the UEs determine whether a Channel is available at the same time by performing Channel sensing, and if the Channel sensing result indicates that the Channel is available, the UEs perform Uplink data transmission at the same time, for example, as shown in fig. 2, in a L TE system, the eNB indicates UE1 and UE2 for Uplink data transmission through DCI carried by PDCCH (Physical Downlink Control Channel) in subframe # n, UE1 and UE2 should transmit indication Information (Physical Downlink Control Information) carried by PDCCH in subframe # n +3 according to the same Downlink Control Information, so that the UEs need to perform Uplink data transmission after receiving PUSCH traffic, and transmit Uplink data transmission through PUSCH (Shared Channel) in the same subframe # n +3, but the eNB generally does not follow the same Uplink data transmission schedule for PUSCH transmission, i.e., the eNB schedules the UEs 5835 and Uplink data transmission is not restricted to the same UE, i.e., the eNB transmits Uplink data transmission of PUSCH traffic sharing Channel sharing Information.

The principle of the invention is as follows: the UE is left vacant for a period of time in the data transmission period of the UE, data transmission and channel interception are not carried out, and other UEs served by the base station can carry out channel interception in the vacant time of the UE, so that the channel interception results of other UEs served by the base station cannot be influenced by the UE in data transmission, uplink data transmission of the UE cannot be further carried out, and the gain of uplink multi-user scheduling is ensured. The configuration of uplink transmission of the UE is not limited, different uplink service requirements of different UEs can be used, and flexible scheduling of uplink multiple users can be realized.

Example 1:

an embodiment of the present invention provides an uplink data transmission method, as shown in fig. 3, the method includes the following steps:

101. the first UE receives scheduling signaling sent by a base station.

The scheduling signaling may be DCI carried by a PDCCH. The base station may be an eNB.

Since the UE needs to perform channel sensing on a standby channel first, that is, L BT mechanism needs to be followed, the base station needs to instruct the UE to perform channel sensing and uplink data transmission through scheduling signaling, the Period of L BT may be FFP (Fixed Frame Period).

102. The first UE determines the own standby channel and the data transmission period.

Wherein the data transmission period refers to a period in which the first UE transmits uplink data through the inactive channel. The inactive channel here includes a channel configured by the access network device for the UE, and also includes a channel used by the access network device for scheduled data transmission for the UE. The access network equipment comprises a base station and a cell governed by the base station, such as a service node of a UE. And data transmission can be carried out between the access network equipment and the UE.

In a specific implementation, the UE may determine its own data transmission period according to the FFP indicated by the base station. As shown in fig. 4, the FFP includes IP (Idle Period) and COT (Channel Occupancy Time). Wherein, COT is the data transmission period of the present invention. The UE carries out channel interception at the tail part of the IP before sending data, wherein the interception time is not less than 20us, if the intercepted channel is determined to be idle through interception, the UE can start to transmit data after finishing interception, and the length of the transmitted data is not more than the time specified by COT; if it is determined by listening that the listened channel is already occupied, the device does not transmit data for the time of the COT specification after the listening is finished. Currently, under regulatory constraints, the time of the IP is not less than 5% of the FFP indicated time, and the time of the COT may be from 1ms to 10 ms.

103. The first UE determines whether to transmit data according to a preset rule within the data transmission period.

The data is transmitted according to a preset rule in a data transmission period, that is, data transmission and channel interception are not performed after the data transmission period is left empty for a period of time, and other UEs which are the same as the first UE serving node and use the same channel as the first UE can perform channel interception during the first UE is left empty, so as to avoid that the first UE transmits data to affect the channel interception result of other UEs.

In a specific implementation, the first UE may determine whether to transmit data according to a preset rule in the data transmission period according to a predefined mode parameter.

Optionally, before step 103, further comprising 103 a: and the first UE receives a third indication signaling, wherein the third indication signaling is used for indicating whether the first UE transmits data according to a preset rule in the data transmission period. Whether to transmit data according to a preset rule in the data transmission period can be determined according to the third indication signaling.

104. And the first UE determines to transmit data according to a preset rule in the data transmission period and determines to transmit data only at other times except for the preset duration in the data transmission period.

Here, the data is transmitted only at other times than the preset duration in the data transmission period, that is, the data is not transmitted in the preset duration of the data transmission period, and the channel sensing is not performed.

105. The first UE determines the time length of the preset duration and the index of the time position of the time unit where the preset duration is located.

The preset duration is duration for which the UE transmits data according to a preset rule and leaves a space in a data transmission period.

In a specific implementation, the first UE may further determine, according to a predefined time parameter, an index of a time position of a time unit where the preset duration is located.

Optionally, before step 105, further comprising 105 a: the first UE receives first indication signaling. And determining the index of the time position of the time unit where the preset duration is located according to the first indication signaling.

It should be noted that the time unit described herein is any one time unit included in the data transmission cycle. The time unit may be a subframe, but is not limited to a subframe, and may also be a slot, an OFDM symbol, and the like. The index of the time position may be an index number of a subframe, or may be a slot index number or an OFDM symbol index number. The time unit in which the preset time duration is located may be any subframe included in the data transmission period, so that the UEs in different FFP periods may schedule any subframe for uplink data transmission.

Further, the first UE obtains an offset parameter a and a period parameter b carried by the first indication signaling, and determines an index of a time position of a time unit where the preset duration is located according to the offset parameter a and the period parameter b. Or, the base station may directly notify the index of the time position of the time unit where the preset duration is located to the first UE through the first indication signaling, and the first UE may directly obtain the index of the time position of the time unit where the preset duration is located in the first indication signaling.

Specifically, the index X of the time position of the time unit where the preset duration is located may be determined according to the formula X mod b ═ a or (X-a) mod b ═ 0. Wherein the computation symbol "mod" represents a remainder operation. A and b in the formula represent an offset parameter and a period parameter respectively.

In addition, the first UE determines the time length of the preset duration according to a predefined duration parameter.

Optionally, before step 105, further comprising 105 b: and the first UE receives second indication signaling. And determining the time length of the preset time length according to the second indication signaling. It should be noted that steps 105a and 105b are not in sequence.

In addition, when the base station sets a time length of a preset duration for the first UE, the following two rules need to be followed:

firstly, the time length of the preset time length is more than or equal to the time length of the second UE for carrying out channel interception on the standby channel of the second UE. The time length of the preset time length is not less than the time length of the second UE for CCA, so that the second UE is ensured not to monitor uplink transmission data of other UEs served by the base station when performing CCA monitoring, and thus uplink multiplexing of multiple users can be achieved.

Secondly, the preset duration must also include the duration of the UE radio frequency from on to off and the duration of the radio frequency from off to on. This is because for a UE that may use a preset rule for uplink data transmission, because data cannot be sent within a preset time duration, the UE1 needs to stop sending data before the time of the preset time duration, and needs to restart sending data after the preset time duration is over, so the time requirements corresponding to the truncated part may include the time from the UE radio frequency being turned on to turned off and from the UE radio frequency being turned off to turned on, for example, 40 microseconds. The time length of the preset time length needs to be set finally by integrating the time length of channel interception performed by the second UE and the time length of the radio frequency turning on and off. Assuming that the duration of the UE CCA is not less than 20 microseconds, the duration of the truncated portion corresponds to not less than 20 microseconds. In summary, the preset duration can be set to 40 μ sec.

Preferably, the method further includes that the first UE further needs to perform channel transmission on the channel to be used in a listening period before data transmission, and ensure that data transmission is performed after the channel to be used is idle. The listening period precedes the data transmission period. Preferably, the listening period precedes the data transmission period and an end time of the listening period is the same as a start time of the data transmission period. The listening period described herein may be a portion of the above FFP including the IP, such as a tail portion of the IP.

And if the result of the channel interception of the standby channel is idle and the first UE determines to transmit data according to the preset rule, transmitting the data through the standby channel at the beginning of the data transmission period, and not transmitting the data and not carrying out the channel interception of the standby channel within the preset time length.

Preferably, after the first UE determines that the data transmission period transmits data according to a preset rule, the base station needs to notify the second UE to perform channel sensing within a preset time duration of the first UE being left empty. Specifically, the index of the time position of the time unit where the preset time length is located and the time length of the preset time length may be notified by the scheduling signaling, and the second UE performs channel listening within the preset time length. In addition, the base station may also notify the second UE in advance through other signaling (e.g., RRC signaling, physical layer signaling), and the second UE performs channel sensing in the time unit of the preset duration indicated by the base station.

It should be noted that, in this embodiment, the sequence of steps 104 and 105 is not limited, that is, the UE may first determine to transmit data according to a preset rule in a data transmission period, and then determine the time length of the preset time duration and the index of the time position of the time unit where the preset time duration is located. Or, the time length of the preset time duration and the index of the time position of the time unit where the preset time duration is located may be predetermined, and the data is transmitted according to the predetermined time length of the preset time duration and the index of the time position of the time unit where the preset time duration is located after the data is transmitted according to the preset rule in the data transmission period. Preferably, the first UE first determines the time length of the preset duration and an index of a time position of a time unit in which the preset duration is located. And judging whether to transmit data according to a preset rule or not through an indication signaling of the base station, namely, not transmitting data and not carrying out channel interception in a preset time length of a transmission period, or determining whether to transmit data according to the preset rule or not according to a prestored mode parameter.

In addition, the uplink data transmission method provided by the embodiment of the present invention is specifically described with reference to fig. 5. If the base station schedules the UE1 and the UE2 for uplink data transmission, and the FFP periods of the UE1 and the UE2 are 2ms and 3ms, respectively, and the listening positions are not aligned, the UE1 and the UE2 may affect the listening result due to data transmission. If the UE1 does not perform data transmission or channel sensing for the preset duration of data transmission period in the FFP of 2ms (i.e., transmits data according to the preset rule described in the embodiment of the present invention), the UE2 performs channel sensing within the preset duration of the UE1, which is not affected by the sensing result due to the data transmission of the UE1, thereby implementing multiplexing of multiple users on the channel and ensuring the gain of multi-user scheduling. In addition, the data transmission mode of reserving the blank in the data transmission period can enable different UEs to adopt different FFP periods to carry out data transmission, and further can adapt to the uplink service requirements of different UEs. In addition, the format of the uplink data transmission performed by the UE is a preset format, that is, a preset duration needs to be set aside.

As also shown in fig. 6, both UE1 and UE2 employ 2ms FFP periods, but the listening positions are not aligned. Similarly, the UE1 does not perform data transmission and channel sensing for the preset duration of the data transmission period in the FFP of 1ms (i.e. the data is transmitted according to the preset rule as described in the embodiment of the present invention), and the UE2 performs channel sensing for the preset duration of the UE 1. That is, the UEs use the same FFP period, and the scheduling positions may not be aligned, thereby achieving scheduling flexibility.

The method includes the steps that a time position of a Sounding Reference Signal (SRS) sent by a UE also needs to be adaptively adjusted according to whether the UE transmits data according to a preset rule, if the first UE determines that the data are transmitted according to the preset rule and a data transmission period includes SRS transmission, time of the SRS transmission can be shifted in time, correspondingly, an uplink DMRS (Demodulation Reference Signal) can also be adaptively adjusted according to whether the UE transmits the data according to the preset rule, in addition, the shifting time length is L TE, the shifting time length can be a time length corresponding to a minimum data transmission unit and is not less than the time length corresponding to the preset time length, and for example, if the preset time length is 40 mu s, the L TE can identify that a data transmission unit is 1 OFDM symbol, the shifting time length can be 1 OFDM symbol.

Compared with the prior art, the uplink data transmission method provided by the embodiment of the invention has the advantages that the UE can determine to transmit data according to the preset rule, the data transmission and the channel interception are not carried out for the preset duration of the data transmission period, and other UEs which are the same as the UE serving node can carry out the channel interception in the time period of the UE vacancy and can not be interfered by the UE.

Example 2:

an embodiment of the present invention provides a first UE, and as shown in fig. 7, the first UE includes: a first determining unit 201 and a second determining unit 202.

A first determining unit 201, configured to determine a standby channel of the first UE and a data transmission period of the first UE; the data transmission period refers to a period in which the first UE transmits uplink data through the inactive channel.

A second determining unit 202, configured to determine whether to transmit data according to a preset rule in the data transmission period, that is, whether to leave a space for a period of time in the transmission period without performing data transmission and channel sensing.

The second determination 202 is further configured to, if the first UE determines to transmit data according to the preset rule, determine to transmit data only at other times except for a preset duration in the data transmission period, that is, not to transmit data and not to perform channel sensing on the standby channel within the preset duration, and perform channel sensing on the standby channel of the second UE within the preset duration by the second UE; wherein the first UE is the same as the access network equipment of the second UE.

As shown in fig. 8, the first UE further includes a receiving unit 203.

The receiving unit 203 is configured to receive a first indication signaling.

The second determining unit 202 is configured to determine, according to the first indication signaling received by the receiving unit, an index of a time position of a time unit where the preset duration is located, where the time unit is any one time unit included in the data transmission cycle.

Or, the second determining unit 202 is configured to determine, according to a predefined time parameter, an index of a time position of a time unit where the preset duration is located.

The second determining unit 202 is specifically configured to obtain an offset parameter a and a period parameter b carried by the first indication signaling, and determine an index of a time position of a time unit where the preset duration is located according to the offset parameter a and the period parameter b.

Specifically, the second determining unit 202 determines the index X of the time position of the time unit where the preset time duration is located according to X mod b ═ a or (X-a) mod b ═ 0.

The receiving unit 203 is further configured to receive a second indication signaling;

the second determining unit 202 is configured to determine the time length of the preset duration according to the second indication signaling.

Or, the second determining unit 202 is configured to determine the time length of the preset time length according to a predefined time length parameter.

Of course, the second determining unit 202 may also determine, after the data is transmitted according to the preset rule in the data transmission period, an index of the time position of the time unit where the preset duration is located according to the second indication signaling or the predefined duration parameter.

It should be noted that the time length of the preset time duration is greater than or equal to the time length of the second UE performing channel sensing on the inactive channel of the second UE.

The receiving unit 203 is further configured to receive a third indication signaling. The second determining unit 202 is specifically configured to determine, according to the third indication signaling received by the third receiving unit, whether to transmit data according to a preset rule in the data transmission period; the third indication signaling is used for indicating whether the first UE transmits data according to a preset rule in the data transmission period.

Or, the second determining unit is specifically configured to determine whether to transmit data according to a preset rule in the data transmission period according to a predefined mode parameter.

The first UE also comprises a monitoring unit and a transmission unit.

The monitoring unit is used for carrying out channel monitoring on the standby channel in a monitoring period; the listening period precedes the data transmission period.

The transmission unit is used for transmitting data through the standby channel at the beginning of the data transmission period if the result of the channel interception of the standby channel by the interception unit is idle and the second determination unit determines to transmit data according to the preset rule, and does not transmit data within the preset time length and the interception unit does not perform channel interception of the standby channel within the preset time length.

It should be noted that the receiving unit 203 in this embodiment may be integrated in a receiver of the UE, and the transmitting unit may be integrated in a transmitter of the UE, or may be integrated in a transceiver of the UE together. The transmitter described herein may preferably be an uplink transmitter. The first determining unit 201 and the second determining unit 202 in this embodiment may be implemented by being integrated in a processor of the UE, or may be stored in a memory of the base station in the form of program codes, and the processor calls and executes the functions of the first determining unit 201 and the second determining unit 202. The listening unit may also be integrated in the transceiver, and configured to transmit a signal to the channel and receive a feedback signal, so that the processor of the UE obtains a result of channel listening according to the received signal.

Compared with the prior art, the UE with the same service node interferes with the uplink data transmission of each other due to an L BT mechanism and influences the gain of multi-user scheduling, and the UE serving the same node can not interfere with the data transmission of each other and influence the gain of the multi-user scheduling.

Example 3:

an embodiment of the present invention further provides a UE, and as shown in fig. 9, the first UE includes: a processor 301, a system bus 302, a memory 303, and a transceiver 304.

The processor 301 may be a Central Processing Unit (CPU). A memory 303 for storing a program code and transmitting the program code to the processor 301, the processor 301 executing the following instructions according to the program code. The memory 303 may include a volatile memory (RAM), such as a random-access memory (RAM); the memory 303 may also include a non-volatile memory (ROM), such as a read-only memory (ROM), a flash memory (flash memory), a hard disk (HDD) or a solid-state drive (SSD). The memory 304 may also comprise a combination of the above-described types of memory. The processor 301 and the memory 303 are connected by a system bus 302 to complete communication with each other.

The transceiver 304 may be implemented as an optical transceiver, an electrical transceiver, a wireless transceiver, or any combination thereof. For example, the optical transceiver may be a small form-factor pluggable (SFP) transceiver, an enhanced SFP transceiver, or a 30 Gigabit SFP transceiver. The electrical transceiver may be an Ethernet (Ethernet) Network Interface Controller (NIC). The wireless transceiver may be a Wireless Network Interface Controller (WNIC).

A processor 301 configured to determine a standby channel of the first UE and a data transmission period of the first UE; the data transmission period refers to a period in which the first UE transmits uplink data through the inactive channel.

A processor 301, configured to determine whether to transmit data according to a preset rule in the data transmission period, that is, whether to leave a space in the transmission period for a period of time without performing data transmission and channel sensing.

The processor 301 is further configured to, if the first UE determines to transmit data according to the preset rule, determine to transmit data only at other times except for a preset time duration in the data transmission period, that is, not transmit data and not perform channel sensing on the standby channel within the preset time duration, and perform channel sensing on the standby channel of the second UE within the preset time duration by the second UE; wherein the first UE is the same as the access network equipment of the second UE.

The processor 301 is further configured to receive a first indication signaling via said transceiver 304.

The processor 301 is configured to determine, according to the received first indication signaling, an index of a time position of a time unit where the preset duration is located, where the time unit is any one time unit included in the data transmission cycle.

Or, the processor 301 is configured to determine, according to a predefined time parameter, an index of a time position of a time unit where the preset duration is located.

Of course, the processor 301 may also determine, after transmitting data according to a preset rule in the data transmission period, an index of a time position of a time unit of the preset duration according to the received first indication signaling or the predefined time parameter. In addition, the base station may directly notify, through the first indication signaling, the first UE of the index of the time position of the time unit where the preset duration is located.

The processor 301 is specifically configured to obtain an offset parameter a and a period parameter b carried by the first indication signaling, and determine an index of a time position of a time unit where the preset duration is located according to the offset parameter a and the period parameter b.

Specifically, the processor 301 determines an index X of a time position of a time unit in which the preset duration is located according to X mod b ═ a or (X-a) mod b ═ 0.

The processor 301 is further configured to receive a second indication signaling through the transceiver 304;

the processor 301 is configured to determine the time length of the preset duration according to the second indication signaling.

Or, the processor 301 is configured to determine the time length of the preset time length according to a predefined time length parameter.

Of course, the processor 301 may also determine, after the data is transmitted according to the preset rule in the data transmission period, an index of the time position of the time unit where the preset duration is located according to the second indication signaling or the predefined duration parameter.

The processor 301 is further configured to receive a third indication signaling through the transceiver 304. The processor 301 is specifically configured to determine, according to the third indication signaling received by the third receiving unit, whether to transmit data according to a preset rule in the data transmission period; the third indication signaling is used for indicating whether the first UE transmits data according to a preset rule in the data transmission period.

Or, the processor 301 is specifically configured to determine whether to transmit data according to a preset rule in the data transmission period according to a predefined mode parameter.

The processor 301 is further configured to perform channel sensing on the standby channel in a sensing period by sending a receiving signal through the transceiver 304; the listening period precedes the data transmission period.

The processor 301 is configured to transmit data through the standby channel at the beginning of the data transmission period if the result of the channel sensing performed on the standby channel by the sensing unit is idle and it is determined that the data is transmitted according to the preset rule, and not transmit data within the preset time period and the sensing unit does not perform channel sensing on the standby channel within the preset time period.

Through the above description of the embodiments, it is clear to those skilled in the art that, for convenience and simplicity of description, the foregoing division of the functional modules is merely used as an example, and in practical applications, the above function distribution may be completed by different functional modules according to needs, that is, the internal structure of the device may be divided into different functional modules to complete all or part of the above described functions. For the specific working process of the device described above, reference may be made to the corresponding process in the foregoing method embodiment, which is not described herein again.

The units described as separate parts may or may not be physically separate, and parts displayed as units may be one physical unit or a plurality of physical units, that is, may be located in one place, or may be distributed in a plurality of different places. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment. In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.

The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a readable storage medium. Based on such understanding, the technical solution of the present invention may be substantially implemented or contributed to by the prior art, or all or part of the technical solution may be embodied in the form of a software product, where the software product is stored in a storage medium and includes several instructions to enable a device (which may be a single chip, a chip, or the like) or a processor (processor) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. An uplink data transmission method, comprising:

a first User Equipment (UE) determines a standby channel of the first UE and a data transmission period of the first UE; the data transmission period refers to a period in which the first UE transmits uplink data through the standby channel;

the first UE determines whether to transmit data according to a preset rule in the data transmission period;

if the first UE determines to transmit data according to the preset rule, the first UE determines to transmit data only at other moments except the preset time length in the data transmission period, and the second UE carries out channel interception on a standby channel of the second UE in the preset time length; wherein the first UE is the same as the access network equipment of the second UE.

2. The method of claim 1, further comprising:

the first UE receives a first indication signaling, and determines an index of a time position of a time unit where the preset duration is located according to the first indication signaling, wherein the time unit is any one time unit included in the data transmission period;

or, the first UE determines the index of the time position of the time unit where the preset duration is located according to a predefined time parameter.

3. The method according to claim 2, wherein the determining, by the first UE, the index of the time position of the time unit where the preset duration is located according to the first indication signaling specifically includes:

and the first UE acquires an offset parameter a and a period parameter b carried by the first indication signaling, and determines the index of the time position of the time unit where the preset duration is located according to the offset parameter a and the period parameter b.

4. The method according to claim 3, wherein the determining the index of the time position of the time unit of the preset duration according to the offset parameter a and the period parameter b comprises:

and determining an index X of the time position of the time unit of the preset time length according to X mod b ═ a or (X-a) mod b ═ 0, wherein mod represents the remainder operation.

5. The method according to any one of claims 2-4, further comprising:

the first UE receives a second indication signaling, and determines the time length of the preset time length according to the second indication signaling;

or, the first UE determines the time length of the preset time length according to a predefined time length parameter.

6. The method of claim 5, wherein a time length of the preset duration is greater than or equal to a time length of the second UE performing channel sensing on the inactive channel of the second UE.

7. The method according to any one of claims 1 to 4 or 6, wherein the determining, by the first UE, whether to transmit data according to a preset rule in the data transmission period specifically includes:

the first UE receives a third indication signaling, and determines whether to transmit data according to a preset rule in the data transmission period according to the third indication signaling; the third indication signaling is used for indicating whether the first UE transmits data according to a preset rule in the data transmission period;

or, the first UE determines whether to transmit data according to a preset rule in the data transmission period according to a predefined mode parameter.

8. The method of any of claims 1-4 or 6, further comprising:

the first UE carries out channel interception on the standby channel in an interception period; the listening period precedes the data transmission period;

and if the result of the channel interception of the standby channel is idle and the first UE determines to transmit data according to the preset rule, transmitting the data through the standby channel at the starting moment of the data transmission period and transmitting the data only at other moments except the preset time length in the data transmission period.

9. A first User Equipment (UE), comprising:

a second determination unit configured to determine whether to transmit data according to a preset rule within the data transmission period;

the second determining unit is further configured to, if the first UE determines to transmit data according to the preset rule, determine to transmit data only at other times except for a preset duration within the data transmission period, and perform channel interception on a standby channel of the second UE within the preset duration by the second UE; wherein the first UE is the same as the access network equipment of the second UE.

10. The first UE of claim 9, further comprising a receiving unit,

the receiving unit is used for receiving a first indication signaling;

11. The first UE of claim 10, wherein the second determining unit is specifically configured to obtain an offset parameter a and a period parameter b carried by the first indication signaling, and determine, according to the offset parameter a and the period parameter b, an index of a time position of a time unit in which the preset duration is located.

12. The first UE according to claim 11, wherein the second determining unit is specifically configured to determine, according to Xmod b-a or (X-a) mod b-0, an index X of a time position of a time unit in which the preset duration is located.

13. The first UE of any one of claims 10-12,

14. The first UE of claim 13, wherein a length of time of the preset duration is greater than or equal to a length of time for the second UE to perform channel sensing on the inactive channel of the second UE.

15. The first UE of any of claims 10-12 or 14,

the second determining unit is specifically configured to determine, according to the third indication signaling received by the receiving unit, whether to transmit data according to a preset rule in the data transmission period; the third indication signaling is used for indicating whether the first UE transmits data according to a preset rule in the data transmission period;

or the like, or, alternatively,

16. The first UE according to any of claims 9-12 or 14, further comprising a listening unit, a transmitting unit,

17. A first User Equipment (UE), comprising:

the processor is further configured to determine whether to transmit data according to a preset rule in the data transmission period;

the processor is further configured to, if the first UE determines to transmit data according to the preset rule, determine to transmit data only at other times except for a preset duration within the data transmission period, and perform channel interception on a standby channel of the second UE within the preset duration by the second UE; wherein the first UE is the same as the access network equipment of the second UE.

18. The first UE of claim 17, further comprising a transceiver,

the transceiver is used for receiving a first indication signaling;

the processor is configured to determine, according to the first indication signaling received by the receiving unit, an index of a time position of a time unit where the preset duration is located, where the time unit is any one time unit included in the data transmission cycle;

19. The first UE of claim 18, wherein the processor is specifically configured to obtain an offset parameter a and a period parameter b carried by the first indication signaling, and determine, according to the offset parameter a and the period parameter b, an index of a time position of a time unit where the preset duration is located.

20. The first UE of claim 19, wherein the processor is specifically configured to determine an index X of a time position of a time unit in which the preset duration is located according to X mod b ═ a or (X-a) mod b ═ 0.

21. The first UE of any one of claims 18-20,

the transceiver is further configured to receive a second indication signaling;

22. The first UE of claim 21, wherein a length of time of the preset duration is greater than or equal to a length of time for the second UE to perform channel sensing on the inactive channel of the second UE.

23. The first UE of any of claims 18-20 or 22,

the transceiver is further configured to receive a third indication signaling;

the processor is specifically configured to determine whether to transmit data according to a preset rule in the data transmission period according to the third indication signaling received by the receiving unit; the third indication signaling is used for indicating whether the first UE transmits data according to a preset rule in the data transmission period;

or the like, or, alternatively,

24. The first UE of any of claims 17-20 or 22, further comprising a listening module,

the processor is further configured to transmit data through the transceiver at the start time of the data transmission period by using the standby channel and transmit data only at other times except for a preset duration within the data transmission period if the result of the channel sensing performed on the standby channel by the sensing module is idle and it is determined that data is transmitted according to the preset rule.