WO2016119142A1

WO2016119142A1 - Base station, user equipment and method for implementing lbt by using mobile communications system

Info

Publication number: WO2016119142A1
Application number: PCT/CN2015/071738
Authority: WO
Inventors: 李秉肇; 胡振兴; 权威; 苗金华; 张戬
Original assignee: 华为技术有限公司
Priority date: 2015-01-28
Filing date: 2015-01-28
Publication date: 2016-08-04
Also published as: CN106031286B; CN106031286A

Abstract

The present invention provides a base station, UE and method for implementing LBT by using a mobile communications system. Contention time periods are classified according to uplink and downlink transmission segments, and it is specified that a UE only contends for unlicensed spectra in an uplink time period and a base station only contends for unlicensed spectra in a downlink time period, so that a LBT mechanism can be more effectively used in a mobile communications system in which uplink time periods and downlink time periods are independent. In addition, embodiments of the present invention also provide a base station, UE and method for implementing LBT by using a mobile communications system. After a base or a UE occupies a channel, whether a carrier signal sent by another base station exists in the channel is detected in a conflict detection timeslot by determining the conflict detection timeslot, and whether signals continue to be sent subsequently according to the monitoring result, thereby reducing the probability that channel occupation conflicts occur among multiple base stations and multiple UEs.

Description

Base station, user equipment and method for realizing LBT based on mobile communication system

Technical field

The present invention relates to the field of communications technologies, and in particular, to a base station, a user equipment, and a method for implementing LBT based on a mobile communication system.

Background technique

Unlicensed Spectrum (English: Unlicensed Spectrum) refers to the public spectrum, which can be used by any organization or individual. However, when using the unlicensed spectrum, you need to follow the Listening After Talk (LBT) mechanism. That is, the communication device first monitors whether there are other communication devices transmitting data on the channel before sending the frame. If the channel is idle, The site can transmit data; otherwise, the communication device will not send data for the time being, but will avoid it after a period of time. Generally, the LBT needs to follow the Clear Channel Assessment (CCA) principle and the Extended CCA (ECCA) principle. The so-called CCA principle requires the communication device to at least monitor the channel for one CCA observation time window. The length of time, wherein the CCA observation time window is a predetermined length of time, such as 20 microseconds (unit: us). If the communication device does not monitor the carrier signal within the one CCA observation time window, the channel is considered to be an idle channel. can use. If the communication device listens to the carrier signal within this one CCA observation time window, then the channel is considered occupied and thus transitions to the ECCA phase. In the ECCA phase, the communication device generates an integer random number R, and then it is necessary to continuously listen to the R CCA observation time windows before using the channel at a channel idle point.

The second generation mobile communication system (English: 2nd Generation, 2G for short), the third generation mobile communication system (English: 3nd Generation, 3G for short), and the Long Term Evolution (LTE) system use the licensed spectrum. If the unlicensed spectrum is to be used also in the mobile communication system, the LBT mechanism must also be followed. However, the LBT mechanism is generally applied to wireless local area network technology (abbreviation: WLAN). If directly applied to a mobile communication system, the following problems occur:

First, in the current LBT mechanism, User Equipment (UE) and wireless access The Access Point (AP) has the same function, and the two compete for the right to use the unlicensed spectrum at the same time. However, in a mobile communication system, the base station and the UE have respective transmission times and do not compete for channels at the same time. Therefore, the current LBT mechanism is not suitable for a mobile communication system having an independent uplink and downlink time period.

Second, if there are multiple base stations or multiple UEs performing channel competition simultaneously according to the LBT mechanism, it may happen that multiple base stations or multiple UEs simultaneously consider that the channel is idle, thereby starting to use the channel at the same time, thereby causing a channel occupation conflict. As shown in FIG. 1, it is a schematic diagram of a channel occupation conflict between multiple base stations.

Summary of the invention

The embodiments of the present invention provide a base station, a UE, and a method for implementing an LBT based on a mobile communication system, which are used to solve the problem that the current LBT mechanism is not suitable for a mobile communication system having an independent uplink and downlink time period, and multiple base stations or multiple The UE may perform channel competition according to the LBT mechanism at the same time, which may cause a channel occupation conflict.

In a first aspect, an embodiment of the present invention provides a base station, including:

a configuration unit, configured to configure at least one secondary carrier for the UE, where the secondary carrier operates in an unlicensed frequency band;

a determining unit, configured to determine split information of the uplink and downlink time segments of the secondary carrier, where the split information of the uplink and downlink time segments includes split information of a downlink time segment and split information of an uplink time segment;

And a processing unit, configured to perform CCA or ECCA on the channel of the secondary carrier in a downlink time period according to the split information of the uplink and downlink time period, and stop performing CCA or ECCA on the channel of the secondary carrier in an uplink time period.

With reference to the first aspect, in a first possible implementation manner of the first aspect, the split information of the uplink and downlink time segments further includes split information of a transition gap between uplink and downlink time segments;

The processing unit is further configured to:

Stopping CCA or ECCA on the channel of the secondary carrier at the transition gap.

With reference to the first aspect, in a second possible implementation manner of the first aspect, when the CCA is performed on the channel of the secondary carrier in the downlink time period, the processing unit is specifically configured to:

Listening to the channel of the secondary carrier during the downlink period;

If the carrier signal is monitored within a predetermined duration, confirm that the channel of the secondary carrier is occupied, and perform ECCA on the channel of the secondary carrier;

If the carrier signal is not detected within the predetermined duration, the channel of the secondary carrier is occupied.

In conjunction with the second possible implementation of the first aspect, in a third possible implementation manner of the first aspect, before the ECCA is performed on the channel of the secondary carrier in the downlink time period, the processing unit is further configured to:

Record the CCA count value at the end of the previous downlink time period;

When the ECCA is performed on the channel of the secondary carrier, the processing unit is specifically configured to:

Generating an integer random number as the initial CCA count value, or as the initial CCA count value, the CCA count value of the recorded previous downlink time period end time;

The CCA count is performed based on the initial CCA count value, and the channel of the secondary carrier is occupied after the initial CCA count value is reduced to zero.

In a second aspect, an embodiment of the present invention provides a UE, including:

a first determining unit, configured to determine at least one secondary carrier configured by the base station for the UE, where the secondary carrier operates in an unlicensed frequency band;

a second determining unit, configured to determine split information of the uplink and downlink time segments of the secondary carrier, where the split information of the uplink and downlink time segments includes split information of a downlink time segment and split information of an uplink time segment;

And a processing unit, configured to perform CCA or ECCA on the channel of the secondary carrier in an uplink time period according to the split information of the uplink and downlink time period, and stop performing CCA or ECCA on the channel of the secondary carrier in a downlink time period.

With reference to the second aspect, in a first possible implementation manner of the second aspect, the split information of the uplink and downlink time segments further includes split information of a transition gap between uplink and downlink time segments;

The processing unit is further configured to:

With reference to the second aspect, in a second possible implementation manner of the second aspect, when the CCA is performed on the channel of the secondary carrier in an uplink time period, the processing unit is specifically configured to:

Listening to the channel of the secondary carrier during the uplink time period;

In conjunction with the second possible implementation of the second aspect, in a third possible implementation manner of the second aspect, before the ECCA is performed on the channel of the secondary carrier in an uplink time period, the processing unit is further configured to:

Recording the CCA count value at the end of the previous uplink time period;

Generating an integer random number as the initial CCA count value, or as the initial CCA count value of the CCA count value of the recorded previous uplink time period end time;

In a third aspect, an embodiment of the present invention provides a base station, including:

An occupied unit, configured to occupy a channel of a secondary carrier, where the secondary carrier operates in an unlicensed frequency band;

Activating unit, configured to start a collision detection gap at an Nth symbol after the channel of the secondary carrier is occupied;

a processing unit, configured to: in the conflict detection gap, monitor whether there is a carrier signal sent by another base station on a channel of the secondary carrier, and the strength of the carrier signal is greater than a preset threshold; if yes, stop occupying The channel of the secondary carrier; otherwise, the channel of the secondary carrier continues to be occupied.

In conjunction with the third aspect, in a first possible implementation of the third aspect,

The N is an integer random number; or,

The N is a preset integer value; or,

The N is determined according to a cell identifier corresponding to the secondary carrier.

In a fourth aspect, an embodiment of the present invention provides a UE, including:

a processing unit, configured to: in the conflict detection gap, monitor whether there is a carrier signal sent by another UE on a channel of the secondary carrier, and the strength of the carrier signal is greater than a preset threshold; if yes, stop occupying The channel of the secondary carrier; otherwise, the channel of the secondary carrier continues to be occupied.

With reference to the fourth aspect, in a first possible implementation manner of the fourth aspect,

The N is an integer random number; or,

The N is a preset integer value; or,

In a fifth aspect, an embodiment of the present invention provides a base station, including:

a processor, configured to configure at least one secondary carrier for the UE, where the secondary carrier operates in an unlicensed frequency band, and determines split information of the uplink and downlink time segments of the secondary carrier, where the split information of the uplink and downlink time segments includes a downlink time segment The split information and the split information of the uplink time period; performing CCA or ECCA on the channel of the secondary carrier in the downlink time period according to the split information of the uplink and downlink time period, and stopping the secondary carrier in the uplink time period The channel performs CCA or ECCA.

With reference to the fifth aspect, in a first possible implementation manner of the fifth aspect, the split information of the uplink and downlink time segments further includes split information of a transition gap between uplink and downlink time segments;

The processor is further configured to:

With reference to the fifth aspect, in a second possible implementation manner of the fifth aspect, when performing CCA on a channel of the secondary carrier in a downlink time period, the processor is specifically configured to:

Listening to the channel of the secondary carrier during the downlink period;

With reference to the second possible implementation manner of the fifth aspect, in a third possible implementation manner of the fifth aspect, before performing the ECCA on the channel of the secondary carrier in the downlink time period, the processor is further configured to:

Record the CCA count value at the end of the previous downlink time period;

When the ECCA is performed on the channel of the secondary carrier, the processor is specifically configured to:

In a sixth aspect, the embodiment of the present invention provides a UE, including:

a processor, configured to determine at least one secondary carrier configured by the base station for the UE, where the secondary carrier operates in an unlicensed frequency band; determining split information of the uplink and downlink time segments of the secondary carrier, and dividing the uplink and downlink time segments The information includes the split information of the downlink time period and the split information of the uplink time period. The CCA or ECCA is performed on the channel of the secondary carrier in the uplink time period according to the split information of the uplink and downlink time segments, and stops in the downlink time period. The channel of the secondary carrier performs CCA or ECCA.

With reference to the sixth aspect, in a first possible implementation manner of the sixth aspect, the split information of the uplink and downlink time segments further includes split information of a transition gap between uplink and downlink time segments;

The processor is further configured to:

With reference to the sixth aspect, in a second possible implementation manner of the sixth aspect, when the CCA is performed on the channel of the secondary carrier in an uplink time period, the processor is specifically configured to:

With reference to the second possible implementation manner of the sixth aspect, in a third possible implementation manner of the sixth aspect, before the ECCA is performed on the channel of the secondary carrier in an uplink time period, the processor Also used for:

Recording the CCA count value at the end of the previous uplink time period;

In a seventh aspect, an embodiment of the present invention provides a base station, including:

a processor, configured to occupy a channel of a secondary carrier, where the secondary carrier operates in an unlicensed frequency band; a collision detection gap is initiated at an Nth symbol after the channel of the secondary carrier is occupied; Detecting, on the channel of the secondary carrier, whether there is a carrier signal sent by another base station, and the strength of the carrier signal is greater than a preset threshold; if yes, stopping the channel occupying the secondary carrier; otherwise, continuing to occupy the channel The channel of the secondary carrier.

With reference to the seventh aspect, in a first possible implementation manner of the seventh aspect,

The N is an integer random number; or,

The N is a preset integer value; or,

In an eighth aspect, an embodiment of the present invention provides a UE, including:

a processor, configured to occupy a channel of a secondary carrier, where the secondary carrier operates in an unlicensed frequency band; a collision detection gap is initiated at an Nth symbol after the channel of the secondary carrier is occupied; Detecting, on the channel of the secondary carrier, whether there is a carrier signal sent by another UE, and the strength of the carrier signal is greater than a preset threshold; if yes, stopping the channel occupying the secondary carrier; otherwise, continuing to occupy the channel The channel of the secondary carrier.

With reference to the eighth aspect, in a first possible implementation manner of the eighth aspect,

The N is an integer random number; or,

The N is a preset integer value; or,

A ninth aspect, an embodiment of the present invention provides a method for implementing an LBT based on a mobile communication system, including:

The base station configures at least one secondary carrier for the UE, where the secondary carrier operates in an unlicensed frequency band;

The base station determines the split information of the uplink and downlink time segments of the secondary carrier, where the split information of the uplink and downlink time segments includes split information of the downlink time segment and split information of the uplink time segment;

The base station performs CCA or ECCA on the channel of the secondary carrier in the downlink time period according to the split information of the uplink and downlink time period, and stops performing CCA or ECCA on the channel of the secondary carrier in the uplink time period.

With reference to the ninth aspect, in a first possible implementation manner of the ninth aspect, the split information of the uplink and downlink time segments further includes split information of a transition gap between uplink and downlink time segments;

The method further includes:

The base station stops performing CCA or ECCA on the channel of the secondary carrier in the transition gap.

With reference to the ninth aspect, in a second possible implementation manner of the ninth aspect, performing CCA on the channel of the secondary carrier in a downlink time period includes:

Listening to the channel of the secondary carrier during the downlink period;

With reference to the second possible implementation manner of the ninth aspect, in a third possible implementation manner of the ninth aspect, before performing the ECCA on the channel of the secondary carrier in the downlink time period, the method further includes:

Record the CCA count value at the end of the previous downlink time period;

Performing ECCA on the channel of the secondary carrier includes:

According to a tenth aspect, an embodiment of the present invention provides a method for implementing LBT based on a mobile communication system. include:

Determining, by the UE, at least one secondary carrier configured by the base station for the UE, where the secondary carrier operates in an unlicensed frequency band;

The UE determines the split information of the uplink and downlink time segments of the secondary carrier, where the split information of the uplink and downlink time segments includes split information of the downlink time segment and split information of the uplink time segment;

The UE performs CCA or ECCA on the channel of the secondary carrier in an uplink time period according to the split information of the uplink and downlink time period, and stops performing CCA or ECCA on the channel of the secondary carrier in a downlink time period.

With reference to the tenth aspect, in a first possible implementation manner of the tenth aspect, the split information of the uplink and downlink time segments further includes split information of a transition gap between uplink and downlink time segments;

The method further includes:

The UE stops performing CCA or ECCA on the channel of the secondary carrier in the transition gap.

With reference to the tenth aspect, in a second possible implementation manner of the tenth aspect, performing CCA on the channel of the secondary carrier in an uplink time period includes:

With the second possible implementation of the tenth aspect, in a third possible implementation manner of the tenth aspect, before performing the ECCA on the channel of the secondary carrier in the uplink time period, the method further includes:

Recording the CCA count value at the end of the previous uplink time period;

Performing ECCA on the channel of the secondary carrier includes:

In an eleventh aspect, an embodiment of the present invention provides a method for implementing LBT based on a mobile communication system. Law, including:

The base station occupies a channel of the secondary carrier, and the secondary carrier operates in an unlicensed frequency band;

The base station starts a collision detection gap at the Nth symbol after the channel of the secondary carrier is occupied;

In the collision detection gap, the base station monitors whether there is a carrier signal sent by another base station on the channel of the secondary carrier, and the strength of the carrier signal is greater than a preset threshold;

If yes, stopping the channel occupying the secondary carrier;

Otherwise, the channel of the secondary carrier continues to be occupied.

With reference to the eleventh aspect, in a first possible implementation manner of the eleventh aspect,

The N is an integer random number; or,

The N is a preset integer value; or,

In a twelfth aspect, an embodiment of the present invention provides a method for implementing an LBT based on a mobile communication system, including:

The UE occupies a channel of the secondary carrier, and the secondary carrier operates in an unlicensed frequency band;

The UE starts a collision detection gap at the Nth symbol after the channel of the secondary carrier is occupied;

In the collision detection gap, the UE monitors whether there is a carrier signal sent by another UE on the channel of the secondary carrier, and the strength of the carrier signal is greater than a preset threshold;

If yes, stopping the channel occupying the secondary carrier;

Otherwise, the channel of the secondary carrier continues to be occupied.

In conjunction with the twelfth aspect, in a first possible implementation of the twelfth aspect,

The N is an integer random number; or,

The N is a preset integer value; or,

According to the solution provided by the embodiment of the present invention, the contention period between the UE and the base station is divided according to the uplink and downlink transmission segments, and the UE is only allowed to compete for the unlicensed spectrum in the uplink time period, and the base station only competes in the downlink time segment. The unlicensed spectrum enables the LBT mechanism to be more efficiently applied to independent mobile communication systems in the uplink and downlink time periods. In addition, by using the solution provided by the embodiment of the present invention, after the base station or the UE occupies the channel, by determining a collision detection gap, the channel is monitored in the collision detection gap whether there is a carrier signal sent by another base station or the UE, and the subsequent signal is determined according to the monitoring result. Whether to continue to transmit signals, thereby reducing the probability of channel occupation conflict between multiple base stations or multiple UEs.

DRAWINGS

1 is a schematic diagram of channel occupancy conflicts between multiple base stations in the prior art;

2A, 2B, and 2C are system architecture diagrams of an application scenario according to an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a base station implementing an LBT mechanism according to an embodiment of the present disclosure;

FIG. 4 is a schematic structural diagram of a UE implementing an LBT mechanism according to an embodiment of the present disclosure;

FIG. 5 is a schematic structural diagram of a base station for solving a channel occupation conflict problem occurring between base stations according to an embodiment of the present disclosure;

FIG. 6 is a schematic structural diagram of a UE for solving a channel occupation conflict problem occurring between UEs according to an embodiment of the present disclosure;

FIG. 7 is a schematic structural diagram of another base station implementing an LBT mechanism according to an embodiment of the present disclosure;

FIG. 8 is a schematic structural diagram of another UE implementing an LBT mechanism according to an embodiment of the present disclosure;

FIG. 9 is a schematic structural diagram of another base station for solving a channel occupation conflict problem occurring between base stations according to an embodiment of the present disclosure;

FIG. 10 is a schematic structural diagram of another UE for solving a channel occupation conflict problem occurring between UEs according to an embodiment of the present disclosure;

FIG. 11 is a flowchart of a method for implementing a base station side of an LBT mechanism according to an embodiment of the present invention;

FIG. 12 is a schematic diagram of a base station regenerating a random number as an initial CCA count value in a downlink time period according to an embodiment of the present disclosure;

FIG. 13 is a schematic diagram of a CCA count value recorded by a base station as an initial CCA count value in a downlink time period according to an embodiment of the present disclosure;

FIG. 14 is a flowchart of a method for implementing a UE side of an LBT mechanism according to an embodiment of the present disclosure;

FIG. 15 is a schematic diagram of a UE regenerating a random number in an uplink time period as an initial CCA count value according to an embodiment of the present disclosure;

FIG. 16 is a schematic diagram of a CCA count value recorded by a UE in an uplink time period as an initial CCA count value according to an embodiment of the present disclosure;

FIG. 17 is a flowchart of a method for solving a channel occupation conflict problem occurring between base stations according to an embodiment of the present invention;

FIG. 18 is a schematic diagram of an effect of reducing a probability of channel occupation conflict occurring between base stations according to an embodiment of the present invention;

FIG. 19 is a flowchart of a method for resolving a channel occupation conflict problem occurring between UEs according to an embodiment of the present invention;

FIG. 20 is a schematic diagram of an effect of reducing a channel occupation collision probability occurring between UEs according to an embodiment of the present invention.

detailed description

The embodiment of the present invention provides a base station, a UE, and a method for implementing an LBT based on a mobile communication system, and divides a contention period between a UE and a base station according to an uplink and downlink transmission segment, and stipulates that the UE only competes for an unlicensed spectrum in an uplink time period, and the base station only The downlink time period competes with the unlicensed spectrum, so that the LBT mechanism can be more effectively applied to the uplink and downlink time period independent mobile communication systems.

The embodiment of the present invention further provides a base station, a UE, and a method for implementing an LBT based on a mobile communication system. After the base station or the UE occupies a channel, the collision detection gap is determined by determining a collision detection gap (English: Collision Detection Gap). Whether the channel has a carrier signal sent by another base station, and determining whether to continue to transmit the signal according to the monitoring result, thereby reducing the probability of occurrence of channel occupation conflict between multiple base stations or multiple UEs.

The technical solution of the embodiment of the present invention can be applied to the following three system architectures:

Scenario 1: As shown in FIG. 2A, for a single base station communication scenario in an LTE system, the UE is connected to the core network through a single base station, and the base station is directly connected to the core network.

Scenario 2: Referring to FIG. 2B, the multi-base station communication scenario in the LTE system, the UE passes multiple The base station is connected to the core network, and a plurality of base stations are connected, and at least one of the plurality of base stations is directly connected to the core network.

Scenario 3: Referring to FIG. 2C, for communication scenarios in other systems (such as 2G, 3G, etc.), the UE is connected through the base station and the base station controller, and the base station controller is connected to the core network.

In the technical solution of the present invention, the UE, which may also be referred to as a mobile phone, a mobile terminal or a mobile device, includes a wireless transceiver function, and can cooperate with the network device to provide a communication service for the user.

The base station may be an evolved node in an LTE system (English: eNodeB, abbreviated as eNB), or may be a radio network controller (English: Radio Network Controller, RNC for short) in a 3G system, or in a 2G system. Base station controller (English: Base Station Controller, referred to as: BSC). It is used to receive data sent by the UE and send it to the base station controller, the core network device, or the corresponding primary base station.

The technical solutions of the present invention will be described below in conjunction with the drawings and the embodiments.

Embodiment 1

Referring to FIG. 3, an embodiment of the present invention provides a base station 3, which can be applied to an uplink and downlink time period independent mobile communication system, and the base station 3 includes:

The configuration unit 31 is configured to configure at least one secondary carrier for the UE, where the secondary carrier operates in an unlicensed frequency band.

The determining unit 32 is configured to determine split information of the uplink and downlink time segments of the secondary carrier, where the split information of the uplink and downlink time segments includes split information of the downlink time segment and split information of the uplink time segment.

The processing unit 33 is configured to perform CCA or ECCA on the channel of the secondary carrier in a downlink time period according to the split information of the uplink and downlink time period, and stop performing CCA or ECCA on the channel of the secondary carrier in an uplink time period. .

Optionally, the split information of the uplink and downlink time segments may further include split information of a transition gap (English: GAP) between uplink and downlink time segments.

Optionally, the processing unit 33 is further configured to: stop, on the conversion gap, the secondary carrier The channel performs CCA or ECCA.

Optionally, when the CCA is performed on the channel of the secondary carrier in the downlink time period, the processing unit 33 is specifically configured to: monitor the channel of the secondary carrier in a downlink time period; if the carrier is monitored within a predetermined time period And confirming that the channel of the secondary carrier is occupied, and performing ECCA on the channel of the secondary carrier; if the carrier signal is not monitored within a predetermined duration, occupying the channel of the secondary carrier.

Optionally, before performing the ECCA on the channel of the secondary carrier in the downlink time period, the processing unit 133 is further configured to: record the CCA count value of the end time of the previous downlink time period.

Optionally, when the ECCA is performed on the channel of the secondary carrier, the processing unit 33 is specifically configured to: generate an integer random number, as an initial CCA count value, or a CCA that will record the end time of the previous downlink time period. The count value is taken as the initial CCA count value; the CCA count is performed according to the initial CCA count value, and the channel of the secondary carrier is occupied after the initial CCA count value is reduced to zero.

For example, the so-called CCA count may be sequentially decremented according to the following procedure until the initial CCA count value is reduced to zero: at the end of each predetermined duration, it is determined whether the carrier signal is monitored within the predetermined duration of the end. If yes, the CCA count value is decremented by one. Otherwise, the CCA count value is kept unchanged.

The foregoing Embodiment 1 provides a base station capable of implementing an LBT mechanism in an uplink and downlink time independent mobile communication system.

Embodiment 2

Referring to FIG. 4, an embodiment of the present invention provides a UE4, which can be applied to an uplink and downlink time-segment independent mobile communication system, where the UE4 includes:

The first determining unit 41 is configured to determine at least one secondary carrier configured by the base station for the UE, where the secondary carrier operates in an unlicensed frequency band.

The second determining unit 42 is configured to determine split information of the uplink and downlink time segments of the secondary carrier, where the split information of the uplink and downlink time segments includes split information of the downlink time segment and split information of the uplink time segment.

The processing unit 43 is configured to: according to the split information of the uplink and downlink time segments, in an uplink time period The channel of the secondary carrier performs CCA or ECCA, and stops performing CCA or ECCA on the channel of the secondary carrier in a downlink time period.

Optionally, the split information of the uplink and downlink time segments further includes split information of a transition gap between uplink and downlink time segments.

Optionally, the processing unit 43 is further configured to: stop performing CCA or ECCA on the channel of the secondary carrier in the conversion gap.

Optionally, when the CCA is performed on the channel of the secondary carrier in the uplink time period, the processing unit 43 is specifically configured to: monitor the channel of the secondary carrier in an uplink time period; if the carrier is monitored within a predetermined time period And confirming that the channel of the secondary carrier is occupied, and performing ECCA on the channel of the secondary carrier; if the carrier signal is not monitored within a predetermined duration, occupying the channel of the secondary carrier.

Optionally, before the performing the ECCA on the channel of the secondary carrier in the uplink time period, the processing unit 43 is further configured to: record the CCA count value of the end time of the previous uplink time period.

Optionally, when performing ECCA on the channel of the secondary carrier, the processing unit 43 is specifically configured to: generate an integer random number, as an initial CCA count value, or a CCA that will record the end time of the previous uplink time period. The count value is taken as the initial CCA count value; the CCA count is performed according to the initial CCA count value, and the channel of the secondary carrier is occupied after the initial CCA count value is reduced to zero.

The foregoing embodiment 2 provides a UE that can implement an LBT mechanism in an uplink and downlink independent mobile communication system.

Embodiment 3

Referring to FIG. 5, an embodiment of the present invention provides a base station 5, which can solve the problem of channel occupation conflict between base stations, where the base station 5 includes:

The occupant unit 51 is configured to occupy a channel of the secondary carrier, and the secondary carrier operates in an unlicensed frequency band.

The initiating unit 52 is configured to start a collision detection gap at the Nth symbol after the channel of the secondary carrier is occupied.

The processing unit 53 is configured to: in the conflict detection gap, monitor whether there is a carrier signal sent by another base station on the channel of the secondary carrier, and the strength of the carrier signal is greater than a preset threshold; if yes, stop occupying The channel of the secondary carrier; otherwise, the channel of the secondary carrier continues to be occupied.

The N is an integer random number; or, the N is a preset integer value; or, the N is determined according to a cell identifier corresponding to the secondary carrier.

The foregoing Embodiment 3 provides a base station, which can reduce the probability of occurrence of channel occupation conflict before multiple base stations after the LBT mechanism is applied to the mobile communication system.

Embodiment 4

As shown in FIG. 6, the embodiment of the present invention provides a UE6, which is used to solve the problem of channel occupation conflict between UEs. The UE6 includes:

The occupation unit 61 is configured to occupy a channel of the secondary carrier, and the secondary carrier operates in an unlicensed frequency band.

The initiating unit 62 is configured to start a collision detection gap at the Nth symbol after the channel of the secondary carrier is occupied.

The processing unit 63 is configured to: in the conflict detection gap, monitor whether there is a carrier signal sent by another UE on the channel of the secondary carrier, and the strength of the carrier signal is greater than a preset threshold; if yes, stop occupying The channel of the secondary carrier; otherwise, the channel of the secondary carrier continues to be occupied.

The foregoing embodiment 4 provides a UE, which can reduce the probability that a channel occupation conflict occurs before multiple UEs after the LBT mechanism is applied to the mobile communication system.

Embodiment 5

Referring to FIG. 7, an embodiment of the present invention provides a base station 7 that can be applied to an uplink and downlink time-segment independent mobile communication system, where the base station 7 includes:

The processor 71 is configured to configure at least one secondary carrier for the UE, where the secondary carrier operates in an unlicensed frequency band, and determine split information of the uplink and downlink time segments of the secondary carrier, where the uplink and downlink time segments are mapped. The sub-information includes the split information of the downlink time segment and the split information of the uplink time period; and according to the split information of the uplink and downlink time segments, perform CCA or ECCA on the channel of the secondary carrier in the downlink time period, and stop in the uplink time period. Performing CCA or ECCA on the channel of the secondary carrier.

Optionally, the processor 71 is further configured to stop performing CCA or ECCA on the channel of the secondary carrier in the conversion gap.

Optionally, when the CCA is performed on the channel of the secondary carrier in the downlink time period, the processor 171 is specifically configured to: monitor the channel of the secondary carrier in a downlink time period; if the carrier is monitored within a predetermined time period And confirming that the channel of the secondary carrier is occupied, and performing ECCA on the channel of the secondary carrier; if the carrier signal is not monitored within a predetermined duration, occupying the channel of the secondary carrier.

Optionally, before performing the ECCA on the channel of the secondary carrier in the downlink time segment, the processor 71 is further configured to: record the CCA count value of the end time of the previous downlink time period.

Optionally, when the ECCA is performed on the channel of the secondary carrier, the processor 71 is specifically configured to: generate an integer random number, as an initial CCA count value, or a CCA that will record the end time of the previous downlink time period. The count value is taken as the initial CCA count value; the CCA count is performed according to the initial CCA count value, and the channel of the secondary carrier is occupied after the initial CCA count value is reduced to zero.

The foregoing fifth embodiment provides a base station capable of implementing an LBT mechanism in an uplink and downlink time independent mobile communication system.

Embodiment 6

As shown in FIG. 8, the embodiment of the present invention provides a UE8, which can be applied to an uplink and downlink time-segment independent mobile communication system, and the UE8 includes:

The processor 81 is configured to determine at least one secondary carrier configured by the base station for the UE, where the secondary carrier And the splitting information of the uplink and downlink time segments, where the split information of the uplink and downlink time segments includes the split information of the downlink time segment and the split information of the uplink time segment; The division information of the time period performs CCA or ECCA on the channel of the secondary carrier in the uplink time period, and stops performing CCA or ECCA on the channel of the secondary carrier in the downlink time period.

Optionally, the processor 81 is further configured to stop performing CCA or ECCA on the channel of the secondary carrier in the transition gap.

Optionally, when the CCA is performed on the channel of the secondary carrier in the uplink time period, the processor 181 is specifically configured to: monitor the channel of the secondary carrier in an uplink time period; if the carrier is monitored within a predetermined time period And confirming that the channel of the secondary carrier is occupied, and performing ECCA on the channel of the secondary carrier; if the carrier signal is not monitored within a predetermined duration, occupying the channel of the secondary carrier.

Optionally, before the ECCA is performed on the channel of the secondary carrier in the uplink time period, the processor 81 is further configured to: record a CCA count value of the end time of the previous uplink time period.

Optionally, when the ECCA is performed on the channel of the secondary carrier, the processor 81 is specifically configured to: generate an integer random number, as an initial CCA count value, or a CCA that will record the end time of the previous uplink time period. The count value is taken as the initial CCA count value; the CCA count is performed according to the initial CCA count value, and the channel of the secondary carrier is occupied after the initial CCA count value is reduced to zero.

The foregoing embodiment 6 provides a UE capable of implementing an LBT mechanism in an uplink and downlink time independent mobile communication system.

Example 7

As shown in FIG. 9, an embodiment of the present invention provides a base station 9 for solving a message between base stations. The channel occupation conflict problem, the base station 9 includes:

The processor 91 is configured to occupy a channel of a secondary carrier, where the secondary carrier operates in an unlicensed frequency band, and initiate a collision detection gap at an Nth symbol after the channel of the secondary carrier is occupied; In the gap, whether there is a carrier signal sent by another base station on the channel of the secondary carrier and the strength of the carrier signal is greater than a preset threshold; if yes, stopping the channel occupying the secondary carrier; otherwise, continuing to occupy The channel of the secondary carrier.

The foregoing embodiment 11 provides a base station, which can reduce the probability of occurrence of channel occupation conflict before multiple base stations after the LBT mechanism is applied to the mobile communication system.

Example eight

As shown in FIG. 10, an embodiment of the present invention provides a UE 10, which is used to solve a channel occupation conflict problem between UEs, where the UE 10 includes

The processor 101 is configured to occupy a channel of a secondary carrier, where the secondary carrier operates in an unlicensed frequency band, and initiate a collision detection gap at an Nth symbol after the channel of the secondary carrier is occupied; In the gap, whether there is a carrier signal sent by another UE on the channel of the secondary carrier, and the strength of the carrier signal is greater than a preset threshold; if yes, stopping the channel occupying the secondary carrier; otherwise, continuing to occupy The channel of the secondary carrier.

Example nine

Referring to FIG. 11 , in the embodiment of the present invention, in order to enable the LBT mechanism to be applicable to an uplink and downlink time independent mobile communication system, the implementation process of the base station side is as follows:

Step 1101: The base station configures at least one secondary carrier for the UE, and the secondary carrier operates in an unlicensed frequency band.

The secondary carrier is a cell managed by the base station, and the cell can only be configured to work as a secondary carrier.

Step 1102: The base station determines the split information of the uplink and downlink time segments of the secondary carrier, where the split information of the uplink and downlink time segments includes split information of the downlink time segment and split information of the uplink time segment.

Optionally, the split information of the uplink and downlink time segments may further include split information of a transition gap between uplink and downlink time segments. The split information of the uplink and downlink time segments may be pre-configured in the UE, and the base station may be informed according to the indication information sent by the UE, or may be notified to the UE after being configured by the base station.

Step 1103: The base station performs CCA or ECCA on the channel of the secondary carrier in a downlink time period according to the split information of the uplink and downlink time period, and stops performing CCA or ECCA on the channel of the secondary carrier in an uplink time period. .

Optionally, if the transition gap is further divided between the uplink and downlink time segments, the base station also needs to stop performing CCA or ECCA on the channel of the secondary carrier in the transition gap.

When the first time enters the downlink time period, the base station first performs CCA on the channel of the secondary carrier. The specific process is: in the downlink time period, the base station starts the CCA, and starts to monitor the channel of the secondary carrier, if it is scheduled. If the carrier signal is monitored on the channel of the secondary carrier, the base station confirms that the channel of the secondary carrier is occupied, and performs ECCA on the channel of the secondary carrier; if no carrier signal is detected within a predetermined duration, Then, the base station occupies a channel of the secondary carrier. The predetermined duration mentioned here is the length of time of a CCA observation time window, such as 20us.

After the base station moves from the CCA phase to the ECCA phase, an integer random number R is first generated as the initial CCA count value. After the R predetermined durations are detected, the channel is considered to be usable, and the predetermined duration is The length of time a CCA observes the time window. Specifically, when the base station does not detect the carrier signal in a CCA observation time window, the current CCA count value is decremented by one, and when the carrier signal is monitored within a CCA observation time window, the current CCA count is maintained. The value does not change. Further, after the base station decrements the CCA count value by one, it also determines whether the subtracted CCA count value is zero. If it is determined that the CCA count value is not zero, the CCA count is continued based on the CCA count value, if it is determined If the CCA count value is zero, the channel of the secondary carrier is occupied.

And if, at the end of the downlink time period, the base station still does not occupy the channel of the secondary carrier, The base station may regenerate an integer random number as an initial CCA count value after the start of the next downlink time period, and perform CCA counting according to the initial CCA count value, and occupy the auxiliary after the initial CCA count value is reduced to zero. The channel of the carrier.

For example, as shown in FIG. 12, for a specific uplink and downlink time segment division example, it is assumed that the base station performs a CCA failure to enter the ECCA phase and the random number obtained in the ECCA phase is 5, and the CCA counts at the end of the current downlink period. When the value is reduced to 3, the base station regenerates a random number after the start of the next downlink time period. If it is 4, the base station restarts channel monitoring from the state where the CCA count value is 4.

Alternatively, if the base station still does not occupy the channel of the secondary carrier at the end of the downlink time period, the base station may also record the previous downlink time before continuing to perform ECCA on the channel of the secondary carrier in the next downlink time period. The CCA count value at the end of the segment. After the start of the next downlink time period, the base station records the CCA count value of the previous downlink time period end time as the initial CCA count value, and performs CCA counting according to the initial CCA count value, when the initial CCA count value The channel occupying the secondary carrier after being reduced to zero. In this way, the base station does not need to restart the CCA or the ECCA in each downlink time period, thereby improving the efficiency of the base station accessing the secondary carrier channel.

For example, referring to FIG. 13, for a specific uplink and downlink time segment division example, the base station stops performing CCA or ECCA in a predetermined uplink time period, and starts CCA or ECCA in a predetermined downlink time period. Assume that the base station performs CCA failure and enters the ECCA phase and the random number obtained in the ECCA phase is 5, which means that the initial value of the CCA count value is 5, and the base station needs to listen to 5 idle CCA observation time windows (for example, 20 us) to occupy channel. Each time the base station listens to an idle CCA observation time window, it subtracts 1 from the CCA count value until the CCA count value is reduced to 0, and the base station can occupy the channel. Assume that when the CCA count value is reduced to 3, the current downlink time period ends, the base station records the CCA count 3 before the start of the next downlink time period, and at the beginning of the next downlink time period, The base station continues to perform channel monitoring from a state where the CCA count value is three.

The foregoing embodiment 9 divides the contention period of the base station according to the uplink and downlink transmission segments, and specifies that the base station competes for the unlicensed spectrum only in the downlink time period, so that the LBT mechanism can be more effectively applied to the uplink and downlink time period independent mobile communication system.

Example ten

Corresponding to the method shown in FIG. 11, referring to FIG. 14, in the embodiment of the present invention, in order to enable the LBT mechanism to be applicable to an uplink and downlink time independent mobile communication system, the implementation process of the UE side is as follows:

Step 1401: The UE determines at least one secondary carrier configured by the base station for the UE, where the secondary carrier operates in an unlicensed frequency band.

Step 1402: The UE determines the split information of the uplink and downlink time segments of the secondary carrier, where the split information of the uplink and downlink time segments includes split information of the downlink time segment and split information of the uplink time segment.

Optionally, the split information of the uplink and downlink time segments may further include split information of a transition gap between uplink and downlink time segments. The split information of the uplink and downlink time segments may be pre-configured in the UE, or may be configured by the UE to receive configuration information sent by the base station, and determined according to the configuration information.

Step 1403: The UE performs CCA or ECCA on the channel of the secondary carrier in an uplink time period according to the split information of the uplink and downlink time period, and stops performing CCA or ECCA on the channel of the secondary carrier in a downlink time period. .

Optionally, if a transition gap is further divided between the uplink and downlink time segments, the UE also needs to stop performing CCA or ECCA on the channel of the secondary carrier in the transition gap.

When the UE enters the uplink time period for the first time, the UE first performs CCA on the channel of the secondary carrier. The specific process is: in the uplink time period, the UE starts the CCA, and starts to monitor the channel of the secondary carrier, if it is scheduled. If the carrier signal is monitored on the channel of the secondary carrier, the UE confirms that the channel of the secondary carrier is occupied, and performs ECCA on the channel of the secondary carrier; If the carrier signal is not monitored within the duration, the UE occupies the channel of the secondary carrier. The predetermined duration described here is the length of time of a CCA observation time window.

After the UE transitions from the CCA phase to the ECCA phase, an integer random number R is first generated as the initial CCA count value. After the R predetermined durations are detected, the channel is considered to be usable, and the predetermined duration is The length of time a CCA observes the time window. Specifically, when the UE does not monitor the carrier signal within a CCA observation time window, the current CCA count value is decremented by one, and when the carrier signal is monitored within a CCA observation time window, the current CCA count is maintained. The value does not change. Further, after the base station decrements the CCA count value by one, it also determines whether the subtracted CCA count value is zero. If it is determined that the CCA count value is not zero, the CCA count is continued based on the CCA count value, if it is determined If the CCA count value is zero, the channel of the secondary carrier is occupied.

If the UE still does not occupy the channel of the secondary carrier at the end of the uplink time period, the UE may regenerate an integer random number as the initial CCA count value after the start of the next uplink time period, and according to the initial The CCA count value is subjected to CCA counting, and the channel of the secondary carrier is occupied after the initial CCA count value is reduced to zero.

For example, as shown in FIG. 15 , for a specific uplink and downlink time segment division example, it is assumed that the UE performs CCA failure to enter the ECCA phase and the random number obtained in the ECCA phase is 5, and the CCA counts at the end of the current uplink time segment. If the value is reduced to 3, the UE regenerates a random number after the start of the next uplink time period. If it is 4, the UE restarts channel monitoring from the state where the CCA count value is 4.

Alternatively, if the UE still does not occupy the channel of the secondary carrier at the end of the uplink time period, the UE may also record the previous uplink time before continuing to perform ECCA on the channel of the secondary carrier in the next uplink time period. The CCA count value at the end of the segment. After the start of the next uplink time period, the UE will record the CCA count value of the end time of the previous uplink time period as the initial The initial CCA count value, and the CCA count is performed according to the initial CCA count value, and the channel of the secondary carrier is occupied after the initial CCA count value is reduced to zero. In this way, the UE does not need to restart the CCA or the ECCA in each uplink time period, which improves the efficiency of the UE accessing the secondary carrier channel.

For example, as shown in FIG. 16, for a specific uplink and downlink time segment division example, the UE suspends CCA or ECCA in a predetermined downlink time period, and starts CCA or ECCA in a predetermined uplink time period. It is assumed that the UE performs the CCA failure and enters the ECCA phase and the random number obtained in the ECCA phase is 5, which means that the initial value of the CCA count value is 5, and the UE needs to listen to 5 idle CCA observation time windows (for example: 20 us) to occupy channel. Each time the UE listens to an idle CCA observation time window, it subtracts 1 from the CCA count value until the CCA count value is reduced to 0, and the UE can occupy the channel. Assume that when the CCA count value is reduced to 3, the current uplink time period ends, the UE records the CCA count 3 before the start of the next uplink time period, and at the beginning of the next uplink time period, the UE continues to count from the CCA count to 3. The status begins with channel monitoring.

In the foregoing embodiment, the contention period of the UE is divided according to the uplink and downlink transmission segments, and the UE is allowed to compete for the unlicensed spectrum only in the uplink time period, so that the LBT mechanism can be more effectively applied to the uplink and downlink time period independent mobile communication system.

Embodiment 11

Referring to FIG. 17, in the embodiment of the present invention, in order to solve the problem of channel occupation conflict between base stations after the LBT mechanism is applied to the mobile communication system, the implementation process of the base station side is as follows:

Step 1701: The base station occupies a channel of the secondary carrier; the secondary carrier operates in an unlicensed frequency band.

Step 1702: The base station starts a collision detection gap at the Nth symbol after the channel of the secondary carrier is occupied.

Specifically, the N may be an integer random number, or may be a preset integer value, or may be determined according to a cell identifier corresponding to the secondary carrier, where the cell identifier includes a public land mobile network. (English: Public Land Mobile Network, abbreviation: PLMN) identification and / or physical cell identification. For example, the cell identifier is 125, and 125 modulo 9=8 is used to determine N=8.

Preferably, the length of the collision detection gap is not more than the length of one symbol.

Step 1703: The base station monitors whether there is a carrier signal sent by another base station on the channel of the secondary carrier in the collision detection gap, and the strength of the carrier signal is greater than a preset threshold; if yes, the occupation is stopped. The channel of the secondary carrier; otherwise, the channel of the secondary carrier continues to be occupied.

For the UE served by the secondary carrier, after determining that the secondary carrier signal starts to be transmitted, the UE determines a collision detection gap position, and performs data reception decoding according to the gap position. Specifically, the UE determines the collision detection gap position, that is, determines a collision detection gap initiated by the base station at the Nth symbol after the channel of the secondary carrier is occupied, and the N is used by the base station. After the determining, the UE is notified, and the N may be an integer random number, or may be a preset integer value, or may be determined according to the cell identifier corresponding to the secondary carrier, where the cell identifier is Includes PLMN identity and/or physical cell identity. For example, if the cell identifier is 125 and 125 modulo 9=8 is used, then N=8 is determined. Subsequently, after receiving the secondary carrier signal, the UE performs data decoding after subtracting the gap position.

Optionally, after the base station stops occupying the secondary carrier channel, the method further includes notifying the UE served by the secondary carrier to stop receiving the secondary carrier signal.

As shown in FIG. 18, after the base station in the eleventh embodiment occupies the channel of the secondary carrier, by determining a collision detection gap, the base station monitors whether the channel has a carrier signal sent by another base station in the collision detection gap, and determines the subsequent carrier according to the monitoring result. Whether to continue to transmit signals, thereby reducing the probability of channel occupation conflicts between multiple base stations.

Example twelve

Corresponding to the method shown in FIG. 17, referring to FIG. 19, in the embodiment of the present invention, in order to solve the problem of channel occupation conflict between UEs after the LBT mechanism is applied to the mobile communication system, the implementation process of the UE side is as follows: :

Step 1901: The UE occupies a channel of the secondary carrier, and the secondary carrier works in an unlicensed frequency band.

Step 1902: The UE starts a collision detection gap at the Nth symbol after the channel of the secondary carrier is occupied.

Specifically, the N may be an integer random number, or may be a preset integer value, or may be determined according to a cell identifier corresponding to the secondary carrier, where the cell identifier includes a PLMN identifier and/or Or physical cell identity. For example, if the cell identifier is 125 and 125 modulo 9=8 is used, then N=8 is determined.

Step 1903: The UE monitors whether there is a carrier signal sent by another UE on the channel of the secondary carrier in the collision detection gap, and the strength of the carrier signal is greater than a preset threshold; if yes, the occupation is stopped. The channel of the secondary carrier; otherwise, the channel of the secondary carrier continues to be occupied.

As shown in FIG. 20, in the foregoing embodiment, the UE determines whether a collision detection gap is used after the channel of the secondary carrier is occupied, and whether the channel is monitored by the UE in the collision detection gap, and whether the subsequent signal is determined according to the monitoring result. Continue to transmit signals, thereby reducing the probability of channel occupancy conflicts between multiple UEs.

Those skilled in the art will appreciate that embodiments of the present invention can be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware. Moreover, the invention can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) including computer usable program code.

The present invention has been described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (system), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flowchart illustrations and/or FIG. These computer program instructions can be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing device to produce a machine for the execution of instructions for execution by a processor of a computer or other programmable data processing device. Means for implementing the functions specified in one or more of the flow or in a block or blocks of the flow chart.

The computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device. The apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.

These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device. The instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

While the preferred embodiment of the invention has been described, it will be understood that Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and the modifications and

It is apparent that those skilled in the art can make various modifications and variations to the embodiments of the invention without departing from the spirit and scope of the embodiments of the invention. Thus, it is intended that the present invention cover the modifications and modifications of the embodiments of the invention.

Claims

A base station, comprising:

a configuration unit, configured to configure at least one secondary carrier for the user equipment, where the secondary carrier works in an unlicensed frequency band;

a determining unit, configured to determine split information of the uplink and downlink time segments of the secondary carrier, where the split information of the uplink and downlink time segments includes split information of a downlink time segment and split information of an uplink time segment;

a processing unit, configured to perform, according to the split information of the uplink and downlink time segments, perform a clear channel assessment CCA or an extended idle channel assessment ECCA on a channel of the secondary carrier in a downlink time period, and stop the secondary carrier in an uplink time period. The channel performs CCA or ECCA.
The base station according to claim 1, wherein the split information of the uplink and downlink time segments further includes split information of a transition gap between uplink and downlink time segments;

The processing unit is further configured to:

Stopping CCA or ECCA on the channel of the secondary carrier at the transition gap.
The base station according to claim 1, wherein when the CCA is performed on the channel of the secondary carrier in the downlink time period, the processing unit is specifically configured to:

Listening to the channel of the secondary carrier during the downlink period;

If the carrier signal is monitored within a predetermined duration, confirm that the channel of the secondary carrier is occupied, and perform ECCA on the channel of the secondary carrier;

If the carrier signal is not detected within the predetermined duration, the channel of the secondary carrier is occupied.
The base station according to claim 3, wherein before the performing the ECCA on the channel of the secondary carrier in the downlink time period, the processing unit is further configured to:

Record the CCA count value at the end of the previous downlink time period;

When the ECCA is performed on the channel of the secondary carrier, the processing unit is specifically configured to:

Generating an integer random number as the initial CCA count value, or as the initial CCA count value, the CCA count value of the recorded previous downlink time period end time;

The CCA count is performed based on the initial CCA count value, and the channel of the secondary carrier is occupied after the initial CCA count value is reduced to zero.
A user equipment, comprising:

a first determining unit, configured to determine at least one secondary carrier configured by the base station for the user equipment, where the secondary carrier operates in an unlicensed frequency band;

a second determining unit, configured to determine split information of the uplink and downlink time segments of the secondary carrier, where the split information of the uplink and downlink time segments includes split information of a downlink time segment and split information of an uplink time segment;

a processing unit, configured to perform, according to the split information of the uplink and downlink time segments, performing an idle channel assessment CCA or an extended idle channel assessment ECCA on a channel of the secondary carrier in an uplink time period, and stopping the secondary carrier in a downlink time period The channel performs CCA or ECCA.
The user equipment according to claim 5, wherein the split information of the uplink and downlink time segments further includes split information of a transition gap between uplink and downlink time segments;

The processing unit is further configured to:

Stopping CCA or ECCA on the channel of the secondary carrier at the transition gap.
The user equipment according to claim 5, wherein when the CCA is performed on the channel of the secondary carrier in the uplink time period, the processing unit is specifically configured to:

Listening to the channel of the secondary carrier during the uplink time period;

If the carrier signal is monitored within a predetermined duration, confirm that the channel of the secondary carrier is occupied, and perform ECCA on the channel of the secondary carrier;

If the carrier signal is not detected within the predetermined duration, the channel of the secondary carrier is occupied.
The user equipment according to claim 7, wherein the processing unit is further configured to: before performing ECCA on the channel of the secondary carrier in an uplink time period:

Recording the CCA count value at the end of the previous uplink time period;

When the ECCA is performed on the channel of the secondary carrier, the processing unit is specifically configured to:

Generating an integer random number as the initial CCA count value, or as the initial CCA count value of the CCA count value of the recorded previous uplink time period end time;

The CCA count is performed based on the initial CCA count value, and the channel of the secondary carrier is occupied after the initial CCA count value is reduced to zero.
A base station, comprising:

An occupied unit, configured to occupy a channel of a secondary carrier, where the secondary carrier operates in an unlicensed frequency band;

Activating unit, configured to start a collision detection gap at an Nth symbol after the channel of the secondary carrier is occupied;

a processing unit, configured to: in the conflict detection gap, monitor whether there is a carrier signal sent by another base station on a channel of the secondary carrier, and the strength of the carrier signal is greater than a preset threshold; if yes, stop occupying The channel of the secondary carrier; otherwise, the channel of the secondary carrier continues to be occupied.
The base station according to claim 9, wherein

The N is an integer random number; or,

The N is a preset integer value; or,

The N is determined according to a cell identifier corresponding to the secondary carrier.
A user equipment, comprising:

An occupied unit, configured to occupy a channel of a secondary carrier, where the secondary carrier operates in an unlicensed frequency band;

Activating unit, configured to start a collision detection gap at an Nth symbol after the channel of the secondary carrier is occupied;

a processing unit, configured to: in the conflict detection gap, monitor whether there is a carrier signal sent by another user equipment on the channel of the secondary carrier, and the strength of the carrier signal is greater than a preset threshold; if yes, stop occupying The channel of the secondary carrier; otherwise, the channel of the secondary carrier continues to be occupied.
The user equipment of claim 11 wherein:

The N is an integer random number; or,

The N is a preset integer value; or,

The N is determined according to a cell identifier corresponding to the secondary carrier.
A base station, comprising:

a processor, configured to configure at least one secondary carrier for the user equipment, where the secondary carrier operates in an unlicensed frequency band, and determines split information of the uplink and downlink time segments of the secondary carrier, where the uplink and downlink time segments are The splitting information includes split information of a downlink time period and split information of an uplink time period; and performing, according to the split information of the uplink and downlink time segments, performing a clear channel assessment CCA or an extended idle channel assessment ECCA on a channel of the secondary carrier in a downlink time period. And stopping performing CCA or ECCA on the channel of the secondary carrier during the uplink time period.
The base station according to claim 13, wherein the split information of the uplink and downlink time segments further includes split information of a transition gap between uplink and downlink time segments;

The processor is further configured to:

Stopping CCA or ECCA on the channel of the secondary carrier at the transition gap.
The base station according to claim 13, wherein when performing CCA on a channel of the secondary carrier in a downlink time period, the processor is specifically configured to:

Listening to the channel of the secondary carrier during the downlink period;

If the carrier signal is monitored within a predetermined duration, confirm that the channel of the secondary carrier is occupied, and perform ECCA on the channel of the secondary carrier;

If the carrier signal is not detected within the predetermined duration, the channel of the secondary carrier is occupied.
The base station according to claim 15, wherein the processor is further configured to: before performing ECCA on a channel of the secondary carrier in a downlink time period:

Record the CCA count value at the end of the previous downlink time period;

When the ECCA is performed on the channel of the secondary carrier, the processor is specifically configured to:

Generating an integer random number as the initial CCA count value, or as the initial CCA count value, the CCA count value of the recorded previous downlink time period end time;

The CCA count is performed based on the initial CCA count value, and the channel of the secondary carrier is occupied after the initial CCA count value is reduced to zero.
A user equipment, comprising:

a processor, configured to determine at least one secondary carrier configured by the base station for the user equipment, where the secondary carrier operates in an unlicensed frequency band, and determines split information of uplink and downlink time segments of the secondary carrier, where the uplink and downlink time segments are The split information includes split information of a downlink time period and split information of an uplink time period; and information of the secondary carrier in an uplink time period according to the split information of the uplink and downlink time segments The channel performs an idle channel assessment CCA or an extended idle channel assessment ECCA, and stops performing CCA or ECCA on the channel of the secondary carrier during the downlink period.
The user equipment according to claim 17, wherein the split information of the uplink and downlink time segments further includes split information of a transition gap between uplink and downlink time segments;

The processor is further configured to:

Stopping CCA or ECCA on the channel of the secondary carrier at the transition gap.
The user equipment according to claim 17, wherein when the CCA is performed on the channel of the secondary carrier in an uplink time period, the processor is specifically configured to:

Listening to the channel of the secondary carrier during the uplink time period;

If the carrier signal is monitored within a predetermined duration, confirm that the channel of the secondary carrier is occupied, and perform ECCA on the channel of the secondary carrier;

If the carrier signal is not detected within the predetermined duration, the channel of the secondary carrier is occupied.
The user equipment according to claim 19, wherein the processor is further configured to: before performing ECCA on the channel of the secondary carrier in an uplink time period:

Recording the CCA count value at the end of the previous uplink time period;

When the ECCA is performed on the channel of the secondary carrier, the processor is specifically configured to:

Generating an integer random number as the initial CCA count value, or as the initial CCA count value of the CCA count value of the recorded previous uplink time period end time;

The CCA count is performed based on the initial CCA count value, and the channel of the secondary carrier is occupied after the initial CCA count value is reduced to zero.
A base station, comprising:

a processor, configured to occupy a channel of a secondary carrier, where the secondary carrier operates in an unlicensed frequency band; a collision detection gap is initiated at an Nth symbol after the channel of the secondary carrier is occupied; Detecting, on the channel of the secondary carrier, whether there is a carrier signal sent by another base station, and the strength of the carrier signal is greater than a preset threshold; if yes, stopping the channel occupying the secondary carrier; otherwise, continuing to occupy the channel The channel of the secondary carrier.
A base station according to claim 21, wherein

The N is an integer random number; or,

The N is a preset integer value; or,

The N is determined according to a cell identifier corresponding to the secondary carrier.
A user equipment, comprising:

a processor, configured to occupy a channel of a secondary carrier, where the secondary carrier operates in an unlicensed frequency band; a collision detection gap is initiated at an Nth symbol after the channel of the secondary carrier is occupied; Detecting, on the channel of the secondary carrier, whether there is a carrier signal sent by another user equipment, and the strength of the carrier signal is greater than a preset threshold; if yes, stopping the channel occupying the secondary carrier; otherwise, continuing to occupy The channel of the secondary carrier.
A user equipment according to claim 23, wherein

The N is an integer random number; or,

The N is a preset integer value; or,

The N is determined according to a cell identifier corresponding to the secondary carrier.
A method for implementing a LBT after listening to a mobile communication system based on a mobile communication system, comprising:

The base station configures at least one secondary carrier for the user equipment, where the secondary carrier operates in an unlicensed frequency band;

The base station determines the split information of the uplink and downlink time segments of the secondary carrier, where the split information of the uplink and downlink time segments includes split information of the downlink time segment and split information of the uplink time segment;

The base station performs an idle channel assessment CCA or an extended idle channel assessment ECCA on the channel of the secondary carrier in a downlink time period according to the split information of the uplink and downlink time period, and stops the channel of the secondary carrier in an uplink time period. Perform CCA or ECCA.
The method according to claim 25, wherein the split information of the uplink and downlink time segments further comprises split information of a transition gap between uplink and downlink time segments;

The method further includes:

The base station stops performing CCA or ECCA on the channel of the secondary carrier in the transition gap.
The method of claim 25, wherein performing CCA on the channel of the secondary carrier in a downlink time period comprises:

Listening to the channel of the secondary carrier during the downlink period;

If the carrier signal is monitored within a predetermined duration, confirm that the channel of the secondary carrier is occupied, and perform ECCA on the channel of the secondary carrier;

If the carrier signal is not detected within the predetermined duration, the channel of the secondary carrier is occupied.
The method of claim 27, further comprising: before performing the ECCA on the channel of the secondary carrier in the downlink time period, further comprising:

Record the CCA count value at the end of the previous downlink time period;

Performing ECCA on the channel of the secondary carrier includes:

Generating an integer random number as the initial CCA count value, or as the initial CCA count value, the CCA count value of the recorded previous downlink time period end time;

The CCA count is performed based on the initial CCA count value, and the channel of the secondary carrier is occupied after the initial CCA count value is reduced to zero.
A method for implementing a LBT after listening to a mobile communication system based on a mobile communication system, comprising:

Determining, by the user equipment, at least one secondary carrier configured by the base station for the user equipment, where the secondary carrier operates in an unlicensed frequency band;

The user equipment determines the split information of the uplink and downlink time segments of the secondary carrier, where the split information of the uplink and downlink time segments includes split information of the downlink time segment and split information of the uplink time segment;

The user equipment performs an idle channel assessment CCA or an extended idle channel assessment ECCA on the channel of the secondary carrier in an uplink time period according to the split information of the uplink and downlink time period, and stops the secondary carrier in the downlink time period. The channel performs CCA or ECCA.
The method according to claim 29, wherein the split information of the uplink and downlink time segments further comprises split information of a transition gap between uplink and downlink time segments;

The method further includes:

The user equipment stops performing CCA or ECCA on the channel of the secondary carrier in the transition gap.
The method of claim 29, wherein said auxiliary load is in an uplink time period The channel of the wave performs CCA, including:

Listening to the channel of the secondary carrier during the uplink time period;

If the carrier signal is monitored within a predetermined duration, confirm that the channel of the secondary carrier is occupied, and perform ECCA on the channel of the secondary carrier;

If the carrier signal is not detected within the predetermined duration, the channel of the secondary carrier is occupied.
The method according to claim 31, further comprising: before performing ECCA on the channel of the secondary carrier in an uplink time period, further comprising:

Recording the CCA count value at the end of the previous uplink time period;

Performing ECCA on the channel of the secondary carrier includes:

Generating an integer random number as the initial CCA count value, or as the initial CCA count value of the CCA count value of the recorded previous uplink time period end time;

The CCA count is performed based on the initial CCA count value, and the channel of the secondary carrier is occupied after the initial CCA count value is reduced to zero.
A method for implementing a LBT after listening to a mobile communication system based on a mobile communication system, comprising:

The base station occupies a channel of the secondary carrier, and the secondary carrier operates in an unlicensed frequency band;

The base station starts a collision detection gap at the Nth symbol after the channel of the secondary carrier is occupied;

In the collision detection gap, the base station monitors whether there is a carrier signal sent by another base station on the channel of the secondary carrier, and the strength of the carrier signal is greater than a preset threshold;

If yes, stopping the channel occupying the secondary carrier;

Otherwise, the channel of the secondary carrier continues to be occupied.
The method of claim 33, wherein

The N is an integer random number; or,

The N is a preset integer value; or,

The N is determined according to a cell identifier corresponding to the secondary carrier.
A method for implementing LBT after listening to a mobile communication system based on a mobile communication system, characterized in that include:

The user equipment occupies a channel of the secondary carrier, and the secondary carrier operates in an unlicensed frequency band;

The user equipment starts a collision detection gap at the Nth symbol after the channel of the secondary carrier is occupied;

The user equipment in the conflict detection gap monitors whether there is a carrier signal sent by another user equipment on the channel of the secondary carrier, and the strength of the carrier signal is greater than a preset threshold;

If yes, stopping the channel occupying the secondary carrier;

Otherwise, the channel of the secondary carrier continues to be occupied.
The method of claim 35, wherein

The N is an integer random number; or,

The N is a preset integer value; or,

The N is determined according to a cell identifier corresponding to the secondary carrier.