CN108633097A - Wireless communications method and user equipment - Google Patents

Wireless communications method and user equipment Download PDF

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Publication number
CN108633097A
CN108633097A CN201710683187.3A CN201710683187A CN108633097A CN 108633097 A CN108633097 A CN 108633097A CN 201710683187 A CN201710683187 A CN 201710683187A CN 108633097 A CN108633097 A CN 108633097A
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CN
China
Prior art keywords
uplink
lbt
sent
automatic
transmission
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Granted
Application number
CN201710683187.3A
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Chinese (zh)
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CN108633097B (en
Inventor
王轶
李迎阳
张世昌
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Beijing Samsung Telecommunications Technology Research Co Ltd
Samsung Electronics Co Ltd
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Beijing Samsung Telecommunications Technology Research Co Ltd
Samsung Electronics Co Ltd
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Application filed by Beijing Samsung Telecommunications Technology Research Co Ltd, Samsung Electronics Co Ltd filed Critical Beijing Samsung Telecommunications Technology Research Co Ltd
Priority to PCT/KR2018/003386 priority Critical patent/WO2018174613A1/en
Priority to US16/488,782 priority patent/US11330624B2/en
Publication of CN108633097A publication Critical patent/CN108633097A/en
Priority to US17/739,812 priority patent/US20220264637A1/en
Application granted granted Critical
Publication of CN108633097B publication Critical patent/CN108633097B/en
Active legal-status Critical Current
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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access, e.g. scheduled or random access
    • H04W74/02—Hybrid access techniques
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access, e.g. scheduled or random access
    • H04W74/002—Transmission of channel access control information
    • H04W74/004—Transmission of channel access control information in the uplink, i.e. towards network
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1822—Automatic repetition systems, e.g. Van Duuren systems involving configuration of automatic repeat request [ARQ] with parallel processes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1812—Hybrid protocols; Hybrid automatic repeat request [HARQ]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1867—Arrangements specially adapted for the transmitter end
    • H04L1/1887—Scheduling and prioritising arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1867—Arrangements specially adapted for the transmitter end
    • H04L1/1896—ARQ related signaling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/14—Spectrum sharing arrangements between different networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H04W72/1263—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows
    • H04W72/1268—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows of uplink data flows
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/21—Control channels or signalling for resource management in the uplink direction of a wireless link, i.e. towards the network
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access, e.g. scheduled or random access
    • H04W74/002—Transmission of channel access control information
    • H04W74/006—Transmission of channel access control information in the downlink, i.e. towards the terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access, e.g. scheduled or random access
    • H04W74/04—Scheduled or contention-free access
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access, e.g. scheduled or random access
    • H04W74/08—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access, e.g. scheduled or random access
    • H04W74/08—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access]
    • H04W74/0808—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access] using carrier sensing, e.g. as in CSMA
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access, e.g. scheduled or random access
    • H04W74/08—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access]
    • H04W74/0808—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access] using carrier sensing, e.g. as in CSMA
    • H04W74/0816—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access] using carrier sensing, e.g. as in CSMA carrier sensing with collision avoidance

Abstract

Present disclose provides a kind of carrier monitorings in unauthorized frequency range and the method for sending signal.This method includes：When modes of the UE based on automatic uplink being operated on unauthorized frequency range carrier wave sends signal, and when use first kind LBT, determining and LBT priority relevant informations need to be indicated according to signaling, so that it is determined that with the relevant transmission parameter of LBT priority.The disclosure further includes：When selection sends resource, resource is determined according to LBT information, and the CWS methods of adjustment of LBT are determined according to scheduling mode.By the disclosure, LAA UE can be made to be coexisted with other UE close friends, and ensure that the close friend between LAA UE coexists.

Description

Wireless communications method and user equipment
Technical field
This disclosure relates to mobile communication technology field.Specifically, this disclosure relates to a kind of load in unauthorized frequency range Wave monitoring and signaling method and corresponding equipment.
Background technology
As user's contradiction rare with frequency spectrum resource to the outburst of high broadband wireless services demand is becoming increasingly acute, mobile fortune Battalion quotient starts to consider to exempt from supplement of the licensed band (alternatively referred to as unauthorized frequency range) as licensed band.3GPP has begun one's study LTE is disposed in unauthorized frequency range (to be known as the LTE system disposed in unauthorized frequency range to authorize photocarrier method access LAA systems System), it is polymerize with effective carrier wave of authorized spectrum band by unauthorized frequency range, how is being ensured not to the other technologies of unauthorized frequency range not It causes under the premise of significantly affecting, effectively improves the whole network availability of frequency spectrum.As shown in Figure 1, being simultaneously UE there are two sending node Service, one provides larger covering or relatively stable connection by authorized spectrum band carrier wave, another passes through unauthorized frequency range Carrier wave provides hotspot service.The two sending nodes belong to a base station, the two sending nodes can be same website, Can be different websites.Another realization method, the two sending nodes may belong to different base stations, that is, pass through dual link (DC, Dual connectivity) mode works..
Unauthorized frequency range generally it is the allocated be used for certain other purposes, for example, radar or 802.11 series it is wireless Fidelity (WiFi, Wireless Fidelity).In unauthorized frequency range, how to avoid LAA systems and radar or WiFi etc. its Interfering with each other for his wireless system, is a crucial problem.Carrier sense (CCA) generally uses in unauthorized frequency range One kind avoiding contention mechanism.One mobile station (STA) has to detection wireless channel before sending signal, is only detecting The wireless channel can be just occupied when the wireless channel free time sends signal, it is this that the mechanism sent out afterwards is first listened to be known as LBT (Listen before talk).LAA is also required to follow LBT mechanism, and energy measuring is carried out to channel.
LAA UE need to first receive the UL grant of eNB transmissions, and indicated by UL grant before sending signal LBT is carried out before sub-frame of uplink.If eNB sends UL grant on the carrier wave of unauthorized frequency range, need first to carry out downlink UL grant just can be transmitted in LBT, success.UE need to carry out uplink LBT before the sub-frame of uplink that UL grant are dispatched is sent, at Work(can just send the PUSCH dispatched by UL grant.It is two kinds that the uplink LBT that UE is carried out, which is divided to,.One kind being known as first kind LBT, I.e. usually said 4 LBT of Category (36.213 15.2.1.1 of TS) determine conflict window size (CWS), randomly generate and move back Keep away factor X.If X CCA time slot is idle, signal can be transmitted.LBT points of the first kind is four LBT priority classifications (LBT Priority class), different QCI (Quality criterion indicator) is corresponded to respectively.Different LBT Priority class, CWS is of different sizes, and Backoff time unit is different (defer period), maximum channel holding time MCOT (maximum channel occupancy time) is also different, as shown in Figure 2.Determine that LAA UE are sent by base station The LBT types and LBT priority class of Shi Caiyong, and ensured shared by the LAA UE uplinks transmission of scheduling by base station Subframe time is no more than the excellent of the LBT priority class or the LBT priority class than indicating of instruction Time needed for first higher (LBT priority class labels the are smaller) business of grade.And the practical types of service sent of UE (corresponding with QCI) is not limited, and UE instrument is sent simply according to the instruction of eNB within the time of distribution.
Another kind is known as the second class LBT (36.213 15.2.1.2 of TS), and UE need to only be opened in the transmission signal that standard defines A 25us CCA detection is carried out before beginning, and signal can be transmitted if channel idle.
Since the uplink dispatched based on UL grant is sent, the uplink for needing the downlink LBT and UE of eNB progress to carry out LBT is successful, and PUSCH just can be transmitted in UE, and sending probability greatly reduces.Therefore, 3GPP starts to consider in unauthorized frequency range The upper uplink for carrying out automatic uplink (autonomous uplink access) is sent.
Invention content
In the uplink dispatched based on UL grant is sent, LBT priority class are indicated in UL grant, and And ensure that scheduling time meets the requirements by base station.However, the uplink of automatic uplink is sent without this information, can not judge Information needed, therefore there is an urgent need for new solutions.
Further, since the ability for seizing channel that automatic uplink and the uplink based on scheduling are sent is different, LBT parameters It should consider the differentiation of the two.
According to one aspect of the disclosure, a kind of method that automatic uplink is sent is provided, including：Acquisition is first listened to be sent out afterwards LBT information；LBT parameters are determined according to LBT information, and determine the transmission parameter sent for automatic uplink；And according to institute Determining LBT parameters come execute LBT operation, and based on the transmissions parameter come determine whether can automatic uplink transmission resource Upper transmission signal.
In one embodiment, determine that LBT parameters include：It sends for automatic uplink and is sent with the uplink based on scheduling, Energy measuring threshold value is determined respectively.
In one embodiment, determine that LBT parameters include：It sends for automatic uplink and is sent with the uplink based on scheduling, Independently or part independently determines conflict window size CWS.
In one embodiment, independently or partly independently determine that conflict window size CWS includes following at least one：
The uplink of same hybrid automatic repeat-request HARQ processing is sent, safeguards sent out for automatic uplink respectively Send the CWS sent with the uplink based on scheduling；
The uplink of same hybrid automatic repeat-request HARQ processing is sent, it is corresponding with the transmission of automatic uplink aobvious The CWS adjustment that the ACK/NACK shown show or hidden is sent for the uplink based on scheduling, with the uplink transmission pair based on scheduling The ACK/NACK answered is not used in the CWS adjustment that the uplink that automatic uplink is sent is sent；And
The uplink of same hybrid automatic repeat-request HARQ processing is sent, it is corresponding with the transmission of automatic uplink aobvious The ACK/NACK shown show or hidden is not used in the CWS adjustment of the transmission of the uplink based on scheduling, is sent with the uplink based on scheduling The CWS adjustment that corresponding ACK/NACK is sent for automatic uplink.
In one embodiment, determine that LBT parameters include：It sends for automatic uplink and is sent with the uplink based on scheduling, The maximum value CW of continuous use conflict window CW is determined respectivelyMax, pNumber K.
In one embodiment, the transmission parameter includes：Time parameter, frequency domain for the resource that automatic uplink is sent Parameter, the type of service that whether can perform the instruction sent or uplink transmission.
In one embodiment, it is determined whether can send transmission signal in resource in automatic uplink includes：According to LBT's Type, it is determined whether can be sent in selected automatic uplink and send signal in resource.
In one embodiment, it is first kind LBT configured threshold value Thr1, and is the second class LBT configured threshold values Thr2, Thr1 are less than Thr2 so that the random number that the UE is generated is big more than the random number that UE is generated described in the likelihood ratio of Thr1 It is big in the probability of Thr2.
In one embodiment, determine that sending parameter includes：According to LBT priority classifications, it is determined whether can be selected The automatic uplink selected sends and sends signal in resource.
In one embodiment, it is that threshold value is respectively configured in different LBT priority classifications so that higher LBT priority Business sent with larger probability.
In one embodiment, the LBT is obtained by the public instruction information C-PDCCH of cell and/or high-level signaling Indicate information.
In one embodiment, the parameter that the automatic uplink is sent is configured for different LBT priority classifications , the UE selects automatic uplink to send resource according to LBT priority classifications.
In one embodiment, determine that LBT parameters include：It is sent for the uplink of automatic uplink, only with first Class LBT.
In one embodiment, determine that LBT parameters include：Information is indicated when receiving maximum channel holding time MCOT When, if the sub-frame of uplink that carry out automatic uplink transmission is located at the sub-frame of uplink set indicated by MCOT instruction information It is interior, then use the second class LBT.
In one embodiment, determine that the transmission parameter that automatic uplink is sent includes：It is sent in automatic uplink and uses second In the case of class LBT, according to the LBT information of the public instruction information C-PDCCH instructions of cell, when determining that current maximum channel occupies Between MCOT the LBT priority classifications that use of downlink transfer, and determine according to the LBT priority classifications automatic uplink hair The time span sent, and/or determine according to the LBT priority classifications type of service QCI that automatic uplink is sent.
In one embodiment, determine that the parameter that automatic uplink is sent includes：It is sent in automatic uplink and uses the second class LBT In the case of, according to the LBT information of the public instruction information C-PDCCH instructions of cell, determine in current maximum channel holding time Automatic uplink is carried out in MCOT and sends adoptable LBT priority classifications, and/or is determined according to the LBT priority classifications The time span that automatic uplink is sent.
A kind of user equipment (UE) another aspect of the present disclosure provides, including：Acquiring unit is configured as obtaining It takes first to listen and sends out LBT information afterwards；Determination unit is configured as determining LBT parameters according to LBT information, and determines for automatic The transmission parameter that row is sent；And LBT operating units, it is configured as executing LBT operations according to identified LBT parameters, and Based on the transmission parameter signal is sent in resource to determine whether to send in automatic uplink.
A kind of method executed by base station another aspect of the present disclosure provides.This method includes：It is set for user The resource sent out LBT information afterwards and/or sent for automatic uplink is first listened in standby UE configurations；And send LBT letters to user equipment (UE) Breath.Preferably, LBT information can be sent by the public instruction information C-PDCCH of cell or by high-level signaling to UE.
In one embodiment, the automatic uplink that base station is UE is sent to be sent with the uplink based on scheduling, separate configurations energy Measure detection threshold value.
In one embodiment, base station be UE automatic uplink send with based on scheduling uplink send, independently or Conflict window size CWS is independently configured in part.
In one embodiment, the automatic uplink that base station is UE is sent to be sent with the uplink based on scheduling, and separate configurations connect The continuous maximum value CW using conflict window CWMax, pNumber K.
In one embodiment, the conflict window size CWS that the uplink of UE is sent is according to reference to the corresponding ACK/ of sub-frame of uplink NACK instructions determine.
In one embodiment, the reference sub-frame of uplink for the conflict window size CWS adjustment that the automatic uplink of UE is sent is root First of the sub-frame of uplink sent forward in first uplink burst based on first kind LBT of at least X subframe is sent out according to UE Subframe.
In one embodiment, base station is the resource that UE is configured to that automatic uplink is sent, and configures the transmission money The corresponding LBT priority classifications information in source.
In one embodiment, base station indicates UE, the LBT of the downlink transfer use of current maximum channel holding time MCOT Priority classification.
In one embodiment, base station indicates UE, and automatic uplink transmission is carried out in current maximum channel holding time MCOT Adoptable LBT priority classifications.
In one embodiment, base station indicates UE by the descending control signaling of activation, the institute sent for automatic uplink There is the LBT priority classification information of HARQ processes.
In one embodiment, the UL grant that base station is sent by dispatching automatic uplink, or pass through dynamic dispatching UL grant, or the Downlink Control Information by indicating ACK/NACK, the instruction UE HARQ that automatic uplink is sent accordingly into The LBT priority classification information of journey.
In one embodiment, base station, which is triggered/gone by the descending control signaling of activation/deactivation, triggers automatic uplink hair It send, UE in predefined time window, attempts can be used for automatic uplink hair by according to the activation/deactivation signaling received First sub-frame of uplink sent successfully completes LBT transmissions activation/deactivation and determines signaling.
In the technical solution of the disclosure, when carrier monitoring before carrying out signal transmission, the carrier wave prison of directionality is carried out It surveys, to avoid other nodes to unauthorized frequency range from interfering, improves system gain.
According to the another aspect of the disclosure, provides a kind of configuration and activation or deactivate what automatic uplink was sent Method.Base station sends automatic uplink on certain types of carrier wave and sends activation/deactivation indication signaling, and/or in certain kinds Automatic uplink is received on the carrier wave of type sends activation/deactivation confirmation indication signaling.
In one embodiment, the automatic uplink transmission activation/deactivation indication signaling can be with activation/deactivation and hair Automatic uplink of the signaling on the same carrier wave, or different carrier waves is sent to send.
In one embodiment, it is predefined at one to send activation/deactivation confirmation indication signaling for the automatic uplink A sub-frame of uplink in time window is sent.
In one embodiment, the automatic uplink sends activation/deactivation confirmation indication signaling and uses than carrying data The faster LBT types of PUSCH.
The technical solution of the disclosure ensure that fairness and automatic uplink between automatic uplink LAA UE Fairness between the LAA UE based on scheduling.Meanwhile the technical solution of the disclosure ensure that LAAUE and other access technologies The close friend of UE (such as WiFi terminal) coexist.
Description of the drawings
By the detailed description below in conjunction with attached drawing, above and other feature of the application will become more apparent, In：
Fig. 1 is to show that authorized spectrum band combines the signal for the scene arranged net with unauthorized frequency range in such a way that carrier wave polymerize Figure；
Fig. 2 is the signal for showing the corresponding conflict window of LBT priority classifications, can occupying maximum time and back-off parameter Figure；
Fig. 3 is the flow chart for showing the method sent according to the automatic uplink of the application one embodiment；
Fig. 4 is the flow chart for showing the automatic uplink of configuration according to the application one embodiment and sending；
Fig. 5 is the block diagram for showing the user equipment according to the application one embodiment；
Fig. 6 is two schematic diagrames shown according to the application one embodiment Competition adjustment window size；
Fig. 7 is the schematic diagram shown according to the application one embodiment Competition adjustment window size.
Specific implementation mode
The disclosure is described in detail with reference to the accompanying drawings and detailed description.It should be noted that the disclosure does not answer office It is limited to specific implementation mode described below.In addition, for simplicity pair public affairs not being directly linked with the disclosure are omitted The detailed description for knowing technology, to prevent understanding of this disclosure from causing to obscure.
In following embodiments of the disclosure, before UE carries out signal transmission in unauthorized frequency range, uplink can be not to wait for Dispatch UL-grant, but selection sends resource in the resource sent for automatic uplink, to send uplink signal. Before UE sends uplink signal, need to carry out LBT.If LBT successes, can send, otherwise cannot send.
The resource sent for automatic uplink, is configured by base station.For example, being configured on automatic by high-level signaling The time resource that row is sent.Wherein, the configuration of time resource can include period, such as the semi-static transmission of existing LTE system The configuration of SPS.
Before UE carries out signal transmission in unauthorized frequency range, need to receive activation signaling (activation).The activation Signaling can be that the SPS in physical layer signaling, such as LTE system activates signaling.Indicate what automatic uplink was sent in activation signaling The starting point of frequency domain resource and time resource.
If UE has sent uplink signal, but base station does not demodulate correctly, then UE will send the uplink signal again.For Description is convenient, referred to as retransmits.But the present embodiment does not limit UE when retransmitting, mark is transmitted as re-transmission or new biography when secondary, The RV versions of UE uses are not limited.The re-transmission is also required to carry out LBT.The re-transmission can be by way of automatic uplink It is sent.
Fig. 3 is the flow chart for showing the method sent according to the automatic uplink of the application one embodiment.
In step 301, UE acquisitions are first listened sends out LBT information afterwards.
For example, UE can obtain LBT information by the public instruction information C-PDCCH of cell.Alternatively, UE can also pass through The signaling that automatic uplink is sent is activated to obtain LBT information.Alternatively, UE can also obtain LBT information by high-level signaling.Alternatively Ground, the public instruction information C-PDCCH of cell and high-level signaling can include a part for LBT information, and UE is public from cell Indicate that both information C-PDCCH and high-level signaling obtain LBT information.
In step 302, UE determines LBT parameters according to LBT information, and determines the transmission ginseng sent for automatic uplink Number.In the following, several examples that UE determines LBT parameters are discussed in detail.
Since the automatic uplink transmission interference suffered from the uplink transmission based on scheduling may be different, for example, on automatic The probability that row collides is more than the uplink based on scheduling and sends.Also, automatic uplink is sent and the uplink based on scheduling Transmission determines whether to be different by the mechanism that base station is properly received, such as the transmission of automatic uplink can be based on display ACK/NACK indicates that therefore, the method for determination of the LBT parameters of both scheduling modes may be different.For example, can according to One or more of under type determines LBT parameters：
(1.1) it is separate configurations that automatic uplink, which sends the energy measuring threshold value sent with the uplink based on scheduling,.
Whether it is more than thresholding X according to the channel energy detected when LAAUE uplinks send progress CCA detectionsThreshIt determines Whether channel is idle.Wherein, XThreshNo more than ceiling capacity detection threshold XThresh_max.A kind of mode is the XThresh_max It is configured by high-level signaling.So, base station is that automatic uplink is sent and X is respectively configured in the uplink transmission based on schedulingThresh_max.Separately A kind of mode is the XThresh_maxBy calculating the X ' obtained by UE maximum transmission powersThresh_maxAnd high-level signaling configuration Relative to X 'Thresh_maxOffset determine.So, base station is that automatic uplink is sent and the uplink transmission difference based on scheduling Configure the offset.
(1.2) automatic uplink is sent when being sent with the uplink based on UL-grant, the adjustment of CWS be completely independent or Part is independent.For example, it may be one kind in following various ways：
The uplink of same HARQ processing is sent, is sent and mixing based on UL-grant if there is automatic uplink It closes and uses, then transmitting terminal and/or receiving terminal safeguard CWS respectively.
For example, the same data, initially send and send automatically, and retransmit based on UL-grant, then to send out automatically It send and safeguards CWS respectively with the transmission based on UL-grant.Automatically the ACK/NACK of the PUSCH sent (can pass through the finger of display Show ACK/NACK, or like the prior art, by the NDI of UL-grant come the hidden instruction ACK/NACK shown.For description side Just, it is collectively referred to as ACK/NACK) it is not used in the CWS adjustment that uplink of the adjustment based on UL-grant is sent, vice versa.That is, this Subframe where two kinds of uplinks are sent cannot function as the reference subframe that other side adjusts CWS.
It is dispatched, and can be subdivided into based on UL-grant, based on dynamic UL-grant scheduling, such as scrambled by C-RNTI DCI, and the UL-grant scheduling that is sent for automatic uplink, such as by the scrambled DCI of X-RNTI, wherein automatic uplink The activation DCI of transmission is exactly to be scrambled using X-RNTI.X-RNTI can be defined newly, can also reuse semi-persistent scheduling SPS C-RNTI.Preferably, automatic uplink is sent and safeguards CWS respectively with the uplink transmission based on dynamic UL-grant scheduling, but It is that the uplink of the UL-grant scheduling sent for automatic uplink and automatic uplink send the same set of CWS of maintenance.
The uplink of same HARQ processing is sent, is sent and mixing based on UL-grant if there is automatic uplink It closes and uses, then automatic uplink sends the CWS adjustment that the uplink that corresponding ACK/NACK can be used for dispatching based on UL-grant is sent, But the uplink based on UL-grant scheduling sends corresponding ACK/NACK and is not useable for the CWS adjustment that automatic uplink is sent.Into one Step, the automatic uplink based on first kind LBT sends the uplink hair that corresponding ACK/NACK can be used for dispatching based on UL-grant The CWS adjustment sent, but the uplink based on UL-grant scheduling sends corresponding ACK/NACK and is not useable for automatic uplink The CWS adjustment that uplink is sent.
Preferably, the UL-grant scheduling that the automatic uplink based on first kind LBT sends and/or sent for automatic uplink Uplink send the CWS adjustment that corresponding ACK/NACK can be used for sending based on the uplink of dynamic UL-grant scheduling, but be based on The uplink of UL-grant scheduling sends corresponding ACK/NACK and is not useable for the uplink transmission of automatic uplink and/or for certainly The uplink for the UL-grant scheduling that dynamic uplink is sent sends corresponding CWS adjustment.
The uplink of same HARQ processing is sent, is sent and mixing based on UL-grant if there is automatic uplink It closes and uses, then automatic uplink sends the CWS tune that the uplink that corresponding ACK/NACK is not useable for dispatching based on UL-grant is sent It is whole, but the uplink based on UL-grant scheduling sends corresponding ACK/NACK and can be used for the CWS adjustment that automatic uplink is sent.Into one Step, automatic uplink sends the CWS adjustment that the uplink that corresponding ACK/NACK is not useable for dispatching based on UL-grant is sent, but It is based on UL-grant scheduling and corresponding ACK/NACK is sent based on the uplink of first kind LBT can be used for automatic uplink and send CWS adjustment.
Preferably, the uplink that automatic uplink is sent and/or the UL-grant for the transmission of automatic uplink is dispatched, which is sent, to be corresponded to ACK/NACK be not useable for the CWS adjustment sent based on the uplink of dynamic UL-grant scheduling, but dispatched based on UL-grant And corresponding ACK/NACK sent based on the uplink of first kind LBT can be used for automatic uplink and send and/or for automatic The uplink for the UL-grant scheduling that row is sent sends corresponding CWS adjustment.
The uplink of same HARQ processing is sent, is sent and mixing based on UL-grant if there is automatic uplink It closes and uses, the uplink that automatic uplink is sent or the UL-grant for the transmission of automatic uplink is dispatched is sent (X-RNTI scramblings) The CWS and CWS of the dynamic transmission based on the scrambled UL grant scheduling of Y-RNTI is that independence or part are independent.Automatic uplink Using X-RNTI scramblings, (X-RNTI can be defined newly, can also reuse the SPS C- of existing standard for the activation of transmission RNTI), the re-transmission that automatic uplink is sent is dispatched by the scrambled UL grant of X-RNTI, or the re-transmission that automatic uplink is sent is by holding Carry DCI (can the include HARQ progress informations simultaneously) triggerings of ACK/NACK instructions.Obviously, the scrambled UL of X-RNTI are determined It when the CWS of the PUSCH of grant scheduling, can be determined according to the value of the NDI of UL grant, such as NDI=1 indicates to retransmit, then CWS increases, in another example, if DCI is designated as NACK, the CWS of the PUSCH for the re-transmission that automatic uplink is sent increases, if it is The CW resettings of ACK, the then PUSCH for the re-transmission that automatic uplink is sent.But it is scrambled based on Y-RNTI for a HARQ processing The PUSCH of UL grant scheduling, such as Y-RNTI is the C-RNTI for dynamic dispatching, and this HARQ treatment progress is upper Primary transmission is to be scrambled to dispatch by X-RNTI, or automatic uplink, then the scrambled UL grant tune of Y-RNTI Whether the adjustment of the CWS of the LBT of the PUSCH of degree succeeds without reference to last time transmission.For example, not according to the scrambled UL of Y-RNTI The value of the NDI of grant determines the adjustment of CWS.A kind of realization method, last time transmission be by X-RNTI scramble dispatch, or It is automatic uplink, not as the reference subframe of the CWS adjustment of the PUSCH of the scrambled UL grant scheduling of Y-RNTI.It can To continue to find forward last PUSCH, the NDI of more last UL grant by the scrambled UL grant scheduling of Y-RNTI CWS is reset, CWS is otherwise increased if overturn with the NDI of current UL grant.The advantage of doing so is that in real system In, if preceding primary scheduling is automatic uplink or is based on the scrambled transmission of X-RNTI, it is scrambled currently to there is Y-RNTI No matter the value of NDI instructions is how many to UL grant, thinks that this HARQ processing scheduled a new transmission block.But it is likely to The last transmission of this HARQ processing is simultaneously failed.Also, the scrambled UL grant of Y-RNTI, the method for determination of NDI values are past It is past different from the NDI value methods of determination of UL grant of X-RNTI.Therefore, it is impossible to by comparing the value of the two, upper one is determined Whether secondary transmission succeeds.
(1.3) automatic uplink sends the maximum value for window (CW) that conflict with the continuous use of the uplink transmission based on scheduling CWMax, pNumber K be separate configurations.
When LAA UE uplinks send progress first kind LBT, the maximum value and minimum of CW are determined according to LBT priority classifications Value, is denoted as CW respectivelyMax, pAnd CWMin, p.Wherein, if it is K times continuous, the length CW for the window that conflictsp=CWMax, p, then the length for the window that conflicts Spend CWpResetting, CWp=CWMin, p.Base station is that the uplink transmission of automatic uplink is respectively configured with the uplink transmission based on scheduling K is denoted as K1 and K2 respectively.
For example, there are two HARQ processing by UE.Wherein HARQ processing 1 is to be dispatched based on UL-grant, at another HARQ Reason 2 sends for automatic uplink.So, the CWS of the two HARQ processing is independent maintenance, also, K1 and K2 are to be respectively configured 's.
(1.4) CWS that uplink is sent determines the size of CWS according to the ACK/NACK that the uplink with reference to subframe is sent.
Preferably, the ACK/NACK is the ACK/NACK of the display instruction carried by physical layer signaling.Such as based on (UE-group based) DCI of user group indicates the ACK/NACK of multiple UE.
The uplink sends the UL-grant scheduling that can be only automatic uplink transmission and/or be sent for automatic uplink Uplink send, alternatively, the uplink send can be automatic uplink send, for automatic uplink send UL-grant scheduling Uplink send, or the uplink based on dynamic UL-grant scheduling is sent.
Preferably, if it is ACK that the uplink with reference to subframe, which sends at least one, uplink is sent all The CWS of LBT priority is reset.Otherwise, for example, the uplink transmission with reference to subframe to be all that NACK or UE are not received any ACK/NACK instructions (can be the DCI of instruction ACK/NACK, or the re-transmission that sends of the scheduling uplink with reference to subframe or The UL-grant of person's new biography), then, the CWS of all LBT priority increases.Wherein, it is that need to determine what CWS was adjusted with reference to subframe The last time that uplink is sent transmits the subframe n where corresponding ACK/NACK instructions0Nearest one of at least 4 subframes forward again The secondary uplink based on first kind LBT sends burst, and (the end subframe of uplink burst is not later than subframe n0- 4) first subframe.
Preferably, the ACK/NACK instructions with reference to subframe determine that CWS is adjusted upper earlier than based on described with reference to subframe Row subframe, and determine that the time difference of the sub-frame of uplink of CWS adjustment is not less than X subframes with reference to subframe with based on described.
As shown in Fig. 6 (a), it is assumed that ascending HARQ course #1 and ascending HARQ course #3 is sent out in subframe n-9 and subframe n-7 It send, that be respectively adopted is the second class LBT and first kind LBT.Have received HARQ processes #1's respectively in subframe n and subframe n+1, UE The ACK of NACK and process #3.UE is attempted in the position re-transmission corresponding to HARQ processes #1, in the position new biography of HARQ processes #3. So, downlink subframe n where the CWS that the uplink of HARQ processes #1 is sent can be indicated according to the ACK/NACK of HARQ processes #1 is past Before find first determined based on the sub-frame of uplink that first kind LBT is sent and refer to subframe.The reference subframe is subframe n-7, The HARQ processes #3 wherein sent is successfully transmitted, and base station has sent ACK in subframe n+1.Therefore, the uplink of subframe n+7 is sent CWS is reset.
It is again shown as shown in Figure 6, it is assumed that ascending HARQ course #1 and ascending HARQ course #3 is sent out in subframe n-9 and subframe n-7 It send, that be respectively adopted is the second class LBT and first kind LBT.The NACK of HARQ processes #1 is had received in subframe n, UE.UE is attempted It is retransmitted corresponding to the position of HARQ processes #1.So, the CWS that the uplink of HARQ processes #1 is sent can be according to HARQ processes #1's First sub-frame of uplink determination reference sent based on first kind LBT that downlink subframe n where ACK/NACK instructions is found forward Subframe.The reference subframe is subframe n-7.Since UE does not receive always the ACK/NACK for the HARQ processes #3 that subframe n-7 is sent Instruction, the CWS that UE sends the uplink of subframe n+7 increase.Although can be seen that HARQ processes #3 uplink send by base station at Work(receives, but since base station does not timely feedback ACK, but in downlink subframe n+8 ability feeding back ACKs, UE can only increase CWS.
(1.5) the reference subframe for the CWS adjustment that automatic uplink is sent is earlier than the quasi- uplinks for carrying out automatic uplink transmission of UE Subframe n0, and first with the time difference of the sub-frame of uplink at least not less than X subframes passes through first kind LBT busy channels Uplink burst (the end subframe of uplink burst is not later than subframe n0- X) first sub-frame of uplink.
It is dispatched with based on UL-grant, or the uplink of the DCI triggerings based on ACK/NACK feedbacks sends difference, retouches here It refers to the DCI for not receiving UL-grant scheduling or ACK/NACK feedbacks whithin a period of time that the automatic uplink stated, which is sent,.Example Such as, when base station activation SPS is sent, UE needs to send there is no business, then UE does not send upstream data.When having crossed one section Between, when there is new data packet to arrive, UE can carry out automatic uplink transmission in the SPS resources of activation.Alternatively, when UE is successfully sent out After having sent one group of data packet, there is no the data that need to be sent, UE that will stop sending in caching.A period of time is spent, when there is new number It arrives according to packet, UE can carry out automatic uplink transmission in the SPS resources of activation.Or new biography based on timer or again Crossing, UE do not receive any descending control signaling for triggering UE progress new biographies or re-transmission in predefined time window, then UE can carry out automatic uplink transmission after time window in corresponding SPS resources.
Automatic uplink described above is sent, UE need to determine the size of CWS.So, it is the quasi- progress of UE with reference to subframe The subframe n that automatic uplink is sent0Forward first of at least X subframe by first kind LBT busy channels uplink burst (on The end subframe of row burst is not later than subframe n0- X) first sub-frame of uplink.Preferably, X is predefined value, such as X= 4。
(1.6) if in uplink burst with reference to where subframe, UE attempts uplink transmission but can not be at least one uplink It is sent in subframe, then CWS is constant.
First uplink burst can include one or more continuous sub-frame of uplink.
First uplink burst can only be the uplink burst based on dynamic UL-grant scheduling, alternatively, can only be base In the uplink burst of dynamic UL-grant scheduling or the UL-grant scheduling sent for automatic uplink, alternatively, can appoint What uplink burst, including the uplink burst that can be automatic uplink transmission.
(1.7) if there is the adjustment of the CWS of at least two sub-frame of uplink based on the transmission of automatic uplink is corresponding to same With reference to subframe, then whether the CWS of first sub-frame of uplink is received correctly by the base station adjustment according to reference to subframe, and it is subsequent on The value of the CWS of row subframe is identical with the value of first sub-frame of uplink.
As shown in Figure 7, it is assumed that the period that automatic uplink is sent is 2ms, and there are two HARQ processes.Assuming that ascending HARQ into Journey #1 and ascending HARQ course #2 is sent in subframe n-9 and subframe n-7, and that be respectively adopted is the second class LBT and first kind LBT. The NACK of the ACK and HARQ processes #2 of HARQ processes #1 is had received in subframe n and subframe n+1, UE.UE attempt corresponding to The position new biography of HARQ processes #1 is retransmitted corresponding to the position of HARQ processes #2.So, the uplink of HARQ processes #1 is sent CWS can indicate first that place downlink subframe n is found forward according to the ACK/NACK of HARQ processes #1 and be based on first kind LBT The sub-frame of uplink of transmission, which determines, refers to subframe.The reference subframe is subframe n-7.The CWS that the uplink of HARQ processes #2 is sent can It is sent out based on first kind LBT with first found forward according to downlink subframe n+1 where the ACK/NACK of HARQ processes #2 instructions The sub-frame of uplink sent, which determines, refers to subframe.The reference subframe is also subframe n-7.So, due to the transmission pair of the uplink of subframe n-7 The NACK subframes n+1 answered is received, so, the CWS that the uplink of subframe n+7 is sent increases, and the CWS of subframe n+9 and subframe n+7 CWS is the same.
(1.8) automatic uplink is sent, or the uplink transmission based on the UL-grant scheduling sent for automatic uplink LBT priority can be determined by one or more of following methods：
When there are multiple HARQ processes can be used, the LBT priority of all processes can be indicated by an activation DCI.Institute LBT priority is stated by LBT priority (the index number highest of LBT priority class minimum in all HARQ processes ) determine.
When there are multiple HARQ processes can be used, the LBT priority of all processes can be indicated by an activation DCI.Institute The LBT priority of instruction is stated by the highest LBT priority (index number of LBT priority class in all HARQ processes Minimum) determine.The LBT priority used in each HARQ processes can be not limited to the LBT priority of the instruction, but It is unable to higher.
Based on the UL-grant sent for automatic uplink in Schedule retransmission or new biography, it can indicate that new LBT is excellent First grade, covering activate the LBT priority indicated in DCI.
In the DCI for indicating ACK/NACK, not only indicate that HARQ processes index, the ACK/NACK of the process can also refer to Show the new LBT priority of the HARQ processes, the LBT priority indicated in covering activation DCI.
When new biography based on dynamic UL-grant scheduling or re-transmission, new LBT priority, covering activation can be indicated The LBT priority indicated in DCI.
It is preferably based on automatic uplink to send only with first kind LBT, without using the second class LBT.When UE is received MCOT indicates information, and the quasi- sub-frame of uplink for carrying out automatic uplink transmission of UE is located at uplink of MCOT instruction information instructions In frame set, UE is still only with first kind LBT.The sub-frame of uplink set of the MCOT instructions information instruction, can basis " configuration of LAA uplinks " bit field in the C-PDCCH of Rel-14LAA determines, i.e., by " upper line displacement UL offset " and " upper line duration UL duration " is determined.
First kind LBT may be used in the uplink transmission for being preferably based on automatic uplink, can also use the second class LBT。
Information is indicated when UE receives MCOT, and the quasi- sub-frame of uplink for carrying out automatic uplink transmission of UE is located at the MCOT and refers to In the sub-frame of uplink set for showing information instruction, the second class LBT may be used in UE.
Preferably, if the automatic uplink of UE, which is sent, uses the second class LBT, after LBT successes, if UE continuously transmits k son Frame, and without interval between each subframe, then this k subframe must be respectively positioned on the sub-frame of uplink collection of the MCOT instructions information instruction In conjunction.If this k subframe has part to be located at except the sub-frame of uplink set of MCOT instruction information instructions, can only carry out First kind LBT, or the subframe outside the sub-frame of uplink set of MCOT instruction information instructions, need to re-start first Class LBT.
Preferably, if the automatic uplink of UE, which is sent, uses first kind LBT, after LBT successes, if UE continuously transmits k son Frame, this k subframe is continuous in subframe dimension, but has interval between subframe, for example, UE continuously transmits 4 subframes, but it is each The last symbol of subframe and/or first symbol are vacated.So, it is carried out determined by first kind LBT by UE These subframes in MCOT can carry out the second class LBT.
In another embodiment, when UE is quasi- carries out automatic uplink, UE can according in following manner one kind or Person is a variety of, and transmission parameter is determined based on the type of LBT and/or LBT priority classifications.The parameter that sends can be new biography Send parameter, or the transmission parameter of re-transmission.For example, it is described send parameter can be the resource sent for uplink when Between the parameter type of service etc. that either whether frequency domain parameter can either carry out the instruction of uplink transmission or uplink is sent.
When the transmission parameter is that whether can carry out the instruction of uplink transmission, can be determined according to following two modes is It is no to carry out uplink transmission：
(2.1) according to the type of LBT, it is determined whether signal can sent in self-propagating resource.
Assuming that UE whether described for sending signal in self-propagating resource, be the random number generated according to UE and set Fixed thresholding is compared.If the random number is more than predefined thresholding, can send, otherwise cannot send (when So, it if LBT fails, can not also send).It is possible to by the way that thresholding is respectively configured for first kind LBT and the second class LBT Thr1 and Thr2, and Thr1 is less than Thr2 so that probability of the random number that UE is generated more than Thr1 is more than random number and is more than Thr2 Probability.Therefore, in the same subframe, the UE based on first kind LBT for sending the uplink signal of automatic uplink is attempted Number is more than the UE numbers based on the second class LBT for the uplink signal for attempting to send automatic uplink.Alternatively, for first kind LBT It is all made of identical thresholding with the second class LBT, but UE is when generating random number, using LBT types as weighted factor so that first The UE of class LBT generates the random number of bigger with the probability of bigger.This method is also applied for determining quasi- carry out certainly by other means The resource that dynamic uplink is sent.
This method, which can reduce, may select to intend in the same resource to carry out automatic uplink transmission, and be based on the second class The quantity of LBT UE, the collision probability between UE to reduce the second class LBT.Because selection is attempted to send in the same subframe Each UE based on the second class LBT of the uplink signal of automatic uplink carries out 25us LBT, Wu Fafa in same position Existing other side, therefore the collision probability between each UE is larger.And it selects to attempt to send automatic uplink in the same subframe Each UE based on first kind LBT of uplink signal can reduce the collision between each UE further by different CWS.
(2.2) according to LBT priority classifications, it is determined whether signal can sent in self-propagating resource.
Assuming that UE whether described for sending signal in self-propagating resource, be the random number generated according to UE and set Fixed thresholding is compared, if the random number is more than predefined thresholding, can be sent, otherwise cannot send (when So, it if LBT fails, can not also send).It is possible to by the way that door is respectively configured for different LBT priority class Limit, for example, thresholding is set separately for 4 LBT priority classifications in table 1, or setting k (k ＜ 4) a thresholding corresponds to one respectively The corresponding thresholding of higher LBT priority is set relatively low so that higher LBT priority by a or multiple LBT priority classifications Business can be sent with the probability of bigger, with ensure with higher QCI business with it is lower collision in time transmission.Alternatively, Only there are one thresholding, but UE is when generating the random number, using LBT priority classifications as weighted factor so that higher LBT The UE of priority generates the random number of bigger with the probability of bigger.
This method is particularly suitable for the UE using the second class LBT.Due to the second class LBT, LBT priority classifications are not differentiated between, 25us LBT are carried out in same position.It collides with the lower business of QCI accordingly, it is possible to the higher business of QCI occur.This Method for the higher business of QCI (i.e. LBT priority classifications value is smaller) by setting lower thresholding, the lower business of QCI Higher thresholding is set, influence of the lower business of QCI to the higher business of QCI is reduced.
Similarly, the time ginseng of the resource sent for automatic uplink can also be determined according to the mode of (2.1) or (2.2) Number.
When the transmission parameter is time or the frequency domain parameter for the resource that automatic uplink is sent, UE matches according to base station Confidence breath determines.Wherein, the configuration information can include the corresponding LBT priority classifications of resource that the automatic uplink is sent Information.UE can determine the resource that automatic uplink is sent according to the LBT priority classifications for the automatic uplink to be sent.
It, can be according to following several when the transmission parameter is the time span and/or type of service that automatic uplink is sent A kind of determining transmission parameter in mode：
(3.1) if the automatic uplink of UE is sent can determine base station using the second class LBT, UE by the instruction information of base station Send the LBT priority classifications used when the downlink transfer in current MCOT, and UE is according to the LBT priority classifications, really Determine UE uplinks and send parameter (such as transmissible subframe lengths), the QCI of the practical business sent of UE is determined by UE.Determining When stating subframe lengths, UE needs to ensure, the subframe lengths, which are no more than, transmits all identical as the LBT priority classifications or ratio Minimum number of sub frames needed for the business of the index lower (i.e. LBT priority is higher) of the LBT priority classifications.Alternatively, UE determines that UE uplinks send parameter according to the LBT priority classifications：Transmissible subframe lengths and UE is practical sends The QCI of business.That is the corresponding LBT priority classifications indexes of QCI of the practical business sent of UE are no more than the LBT priority Classified index.The instruction information of the base station can be carried by cell common signaling C-PDCCH, i.e., indicate to send in C-PDCCH The LBT priority classifications used when downlink transfer in current MCOT.
(3.2) use the second class LBT, UE can be by the instruction information of base station if the automatic uplink of UE is sent, determination is being worked as Adoptable LBT priority classifications when uplink in preceding MCOT, and UE, according to the LBT priority classifications, determination can The subframe lengths of transmission, or further determine that and available LBT priority classifications are sent using the automatic uplink of the second class LBT. When determining the subframe lengths, UE needs to ensure, the subframe lengths be no more than transmit it is all with the LBT priority classifications phase Minimum subframe needed for the same or business of (i.e. LBT priority is higher) more lower than the index of the LBT priority classifications Number.
(3.3) when UE receive MCOT_1 instruction information and indicating downlink transmission cut-off symbolic information, and UE intend into The sub-frame of uplink that the automatic uplink of row is sent is located in MCOT_1, and the quasi- sub-frame of uplink for carrying out automatic uplink transmission of UE is close to institute The cut-off subframe stated the cut-off subframe of indicating downlink transmission or transmitted with the indicating downlink is the same subframe, then, such as Fruit UE can complete the second class LBT, UE after the cut-off symbol that the indicating downlink transmits can be from the downlink transfer Start to send automatic uplink transmission at 25us after cut-off symbol, otherwise can only carry out first kind LBT.If it is continuous more subframes It sends, then the sub-frame of uplink continuously transmitted should belong in the MCOT_1.
For example, base station in multiple descending carriers, selects a descending carrier X to carry out Cat-4LBT, and in other loads 25us LBT (i.e. the Type B LBT of multicarrier, such as 36.213 15.1.5.2 of TS) are carried out on wave Y, Z.Assuming that in subframe 0, under The LBT successes of row carrier wave X and the LBT successes of descending carrier Y, then, base station can take on carrier wave X and Y with by base station The UE of business shares MCOT, it is assumed that MCOT=4ms, that is to say, that between subframe 0~3, if there is sub-frame of uplink, it is described on Row subframe belongs in MCOT.It is referred to as MCOT_1 for carrier wave Y, our shared MCOT (MCOT_1 with MCOT length is identical). On carrier wave X, the second class LBT may be used in all uplink in MCOT.On carrier wave Y, and if only if uplink When being less than or equal to 25us with the interval of the downlink transfer in MCOT, the second class LBT just can be used in uplink, even if otherwise existing In MCOT, uplink must also use first kind LBT.Assuming that base station sends downlink transfer since subframe 0, until subframe 2 The 3rd symbol cut-off.MCOT_1 length is 4.Assuming that subframe 2, which is automatic uplink, sends resource subframe.So, UE can basis Downgoing time (DL timing) carries out the second class LBT, i.e. 25us CCA, if channel idle, UE from the 4th sign-on Can after the 25us of the 4th symbol of subframe 2 send automatic uplink uplink signal, i.e., according to upstream time (UL timing), since (25+TA) us of the 4th symbol of subframe 2, when wherein TA (timing advance) is uplink Between lead.
In step 303, UE is operated according to identified LBT parameters to execute LBT, and is determined whether based on transmission parameter It can be sent in automatic uplink and send signal in resource.If LBT successes, UE can send in automatic uplink and be sent in resource Uplink signal.If LBT fails, UE abandons sending.
Preferably, it can be that base station configures that the automatic uplink, which sends resource,.For example, can be matched by high-level signaling It sets and/or signaling is triggered by physical layer to configure.The automatic uplink sends resource：The time-frequency money that uplink is sent Source (such as period, time offset, PRB resources or portions of bandwidth BWP), modulation coding scheme (MCS), reference mark ginseng Number (such as reference symbol sequence either orthogonal code OCC or cyclic shift Cyclic shift).In addition, it is described it is automatic on It can also include other necessary informations, such as redundancy version information (RV), repetition transmission times K etc. that row, which sends resource,.It can join See step 401, the configuration in 402.
Preferably, after UE carries out automatic uplink transmission according to step 303, on certain types of descending carrier, needle is received The HARQ-ACK feedbacks that the automatic uplink is sent.
Preferably, the certain types of descending carrier is Pcell or pSCell.
Preferably, the certain types of descending carrier is authorized spectrum band carrier wave, and the authorized spectrum band carrier wave is by base It stands configuration.For example, the authorized spectrum band carrier wave is to send to send or indicate automatic uplink for triggering automatic uplink in step 402 Send the carrier wave where the instruction information of failure.For example, base station is in authorized spectrum band carrier wave CC2Upper transmission triggers automatic uplink and sends Instruction, triggering UE can be in unauthorized frequency range carrier wave CC3Upper to carry out automatic uplink transmission, then UE is in CC3It is upper to carry out automatic uplink It, will be in CC after transmission2Upper reception HARQ-ACK feedbacks.
Preferably, the certain types of descending carrier is the carrier wave for activating automatic uplink.
Preferably, the time for receiving HARQ-ACK feedback, time sent by the automatic uplink and predefined Time migration determine.
Preferably, the HARQ-ACK feedbacks are carried by PHICH channel bearings, or by PDCCH.The PDCCH can not Including scheduling information, only includes HARQ-ACK information, and this PDCCH is that multiple UE are common, the HARQ-ACK of different UE Different bits is occupied in PDCCH.Preferably, the PDCCH includes the HARQ progress informations of each UE.
Preferably, UE is fed back according to the HARQ-ACK received, determines re-transmission or transmission that automatic uplink is sent New data.
Preferably, UE carry out automatic uplink transmission re-transmission or send new data time it is according to what is received The time of HARQ-ACK feedbacks and predefined time migration determine.
Preferably, UE carry out automatic uplink transmission re-transmission or send new data time it is according to what is received The time of HARQ-ACK feedbacks and predefined time migration determine the starting point of time window, according to predefined time window Length determines the terminal of time window.UE carries out LBT in this time window, attempts to carry out certainly in automatic uplink transmission resource The re-transmission or send new data that dynamic uplink is sent.Further, when having multiple HARQ processes, UE is attempted in corresponding HARQ The automatic uplink of process sends the re-transmission for carrying out automatic uplink transmission in resource or sends new data.
Preferably for the same HARQ processes, if UE had not only had received the HARQ-ACK feedbacks, but also UL is had received Grant, then UE the transmission of PUSCH is determined according to the instruction of UL grant.
Preferably, in the PUSCH that the automatic uplinks of UE are sent, including with the relevant information of HARQ process, such as HARQ ID.It can be indicated by the bit of display, or indirectly be indicated by DMRS.
Fig. 4 is the flow chart for showing the automatic uplink of configuration according to the application one embodiment and sending.
In step 401, base station is configured to the resource that automatic uplink is sent.
The resource sent for automatic uplink includes at least time resource.Wherein, the configuration of time resource can wrap Containing the period.The configuration of time resource can be the form of bit map.
Preferably, the resource sent for automatic uplink can also include frequency domain resource, such as uplink carrier information.
Preferably, it can also includes that the automatic uplink is sent corresponding to resource to be used for the resource that automatic uplink is sent Relevant information of HARQ procedure, such as HARQ process ID etc..
Preferably, it can also includes LBT relevant informations, such as the automatic uplink hair to be used for the resource that automatic uplink is sent Send adoptable LBT priority or LBT type informations etc..
It is described be configured to automatic uplink send resource signaling be RRC signaling either MAC layer control element CE or The combination of Physical layer control information or much information.The Physical layer control information can be contained in step 402, base station The instruction information sent for triggering automatic uplink sent.The Physical layer control information can be C-PDCCH.
In step 402, base station is sent for activating automatic uplink to send or indicate that automatic uplink sends the instruction letter of failure Breath.
Preferably, the instruction information is carried by physical layer signaling, such as the SPS in LTE system activates signaling, or SPS deactivates signaling.
Preferably, the instruction information can also be adoptable comprising LBT relevant informations, such as the automatic uplink transmission LBT priority or LBT type informations etc..
Preferably, the instruction information includes to indicate that automatic uplink sends the information of frequency domain resource, such as the physics of occupancy The index information of resource block PRB information or corresponding up-link carrier.
Preferably, the instruction information includes that automatic uplink sends confirmation in instruction step 403 or automatic uplink is sent The frequency domain resource for the confirmation message that fails, such as the Physical Resource Block PRB information of described information occupancy or corresponding up-link carrier Index information.
Preferably, on the PRB information of the automatic uplink transmission frequency domain resource and the transmission of automatic uplink confirm or are automatic The PRB information that row sends failure confirmation message is identical.
Preferably, the instruction information includes to indicate that automatic uplink sends the index information for the corresponding up-link carrier that fails, I.e. the automatic uplink of which up-link carrier sends failure.
Preferably, the instruction information includes the starting point that instruction can be used for the time resource that automatic uplink is sent.
Preferably, base station can only send the instruction information in authorized spectrum band.
Preferably, base station can only send the instruction information on main carrier Pcell or major-minor carrier wave Pscell.
For example, when base station is sent for triggering in unauthorized frequency range carrier wave CC2On automatic uplink send indication signaling when, It base station can only be in Pcell CC1It is upper to send the indication signaling.The indication signaling includes carrier indication information, such as 3 bits CIF, trigger CC2On automatic uplink send.
Preferably, when base station sends the finger that automatic uplink is sent or automatic uplink transmission is failed in unauthorized frequency range carrier wave Other downlink transfers are not included in downlink transfer burst when showing, and where the instruction, then base station can be used general with carrying The PDSCH of the logical data or different types of LBT of PDCCH for dispatching general data.For example, the LBT of 25us may be used, or 4 LBT of Cat of highest priority level may be used in person, such as contention window length CWS can be set as [3,7].
In step 403, base station received on certain types of up-link carrier the automatic uplink from UE send confirm or Automatic uplink sends the instruction that failure confirms.
Preferably, the certain types of up-link carrier is the up-link carrier of authorized spectrum band.
Preferably, the certain types of up-link carrier is Pcell or Pscell.
UE sends the good of the instruction that automatic uplink sends confirmation or uplink transmission failure confirms automatically in authorized spectrum band Place is, it is ensured that timely sends the instruction.If sent in unauthorized frequency range automatic uplink send confirm or from Dynamic uplink sends the instruction that failure confirms, may due to channel busy, UE can not at the appointed time or it is specified between in successfully complete LBT sends the instruction that confirmation or automatic uplink transmission failure confirm to send automatic uplink, causes base station unclear UE is to send or indicate that automatic uplink sends the instruction information of failure because not receiving and triggering automatic uplink, or account for not successfully Use channel.
Preferably, the certain types of up-link carrier is to be sent in step 402 for triggering automatic uplink transmission or referring to Show that automatic uplink sends the corresponding up-link carrier of descending carrier of the instruction information of failure.Its correspondence, is matched by high-level signaling It sets, where the instruction information that the automatic uplink for being either defined as UE transmissions sends confirmation or uplink transmission failure confirms automatically Carrier wave receives the carrier wave where the instruction information for sending or indicating automatic uplink transmission failure for triggering automatic uplink with UE For the same carrier wave.
Preferably, the automatic uplink sends confirmation or automatic uplink sends the instruction information that failure confirms and includes carrier wave Index information, you can to indicate that the confirmation instruction information is that determining for which up-link carrier indicates information.For example, above In this example, the confirmation instruction information includes up-link carrier CC2Information.
Preferably, automatic uplink is sent on the certain types of carrier wave sends confirmation or automatic uplink transmission The occupied running time-frequency resource of instruction information that failure confirms in step 402 by being used to trigger automatic uplink transmission or instruction certainly The instruction information that dynamic uplink sends failure determines.For example, sending the automatic uplink sends the running time-frequency resource that confirmation message occupies For the running time-frequency resource that the automatic uplink is sent, but place carrier wave can be different.It is sent really in another example sending the automatic uplink The frequency domain resource for recognizing information occupancy is that high level is semi-statically configured, and time resource is sent by the automatic uplink and indicates that information is true It is fixed, such as time resource is relative to the X subframe received after automatic uplink sends the subframe for indicating information.
Preferably, the certain types of up-link carrier is the carrier wave where automatic uplink is sent, you can be unauthorized Frequency range carrier wave.A kind of realization method sends or indicates that automatic uplink is sent according to being sent in step 402 for triggering automatic uplink The sending time of the instruction information of failure determines that automatic uplink sends confirmation or automatic uplink sends the instruction that failure confirms and believes Unique transmission subframe of breath.The transmission subframe is the subframe sent for automatic uplink, for example, being sent out according to automatic uplink is triggered The instruction information sent, the subframe that the first available automatic uplink determined is sent.Another realization method sends to improve The probability for confirming instruction information, in a time window, UE will carry out CCA detections, attempt to send certainly in sub-frame of uplink Dynamic uplink sends confirmation or automatic uplink sends the instruction that failure confirms.If UE can not be sent automatically in the time window Uplink sends confirmation or automatic uplink sends the instruction that failure confirms, UE abandons sending the instruction.Preferably, the time Window in step 402 where to send for triggering automatic uplink transmission or indicating that automatic uplink sends the instruction information to fail Subframe, or sent out according to first available automatic uplink that the instruction information that automatic uplink is sent determines is triggered in step 402 The subframe sent is reference point, continuous XrA frame is the time window.In the time window, UE need to indicate upper and lower according to base station Row information determines the sub-frame of uplink that can be used for automatic uplink.
Preferably, UE sends automatic uplink transmission confirmation in unauthorized frequency range carrier wave or automatic uplink sends failure confirmation Instruction when, can be used with carrying general data the different types of LBT of PUSCH.For example, the LBT of 25us may be used, or The Cat 4LBT of highest priority level may be used in person, such as contention window length CWS can be set as [3,7].
Fig. 5 is the block diagram for showing the user equipment according to the application one embodiment.As shown in figure 5, user equipment (UE) 500 include acquiring unit 510, determination unit 520 and LBT operating units 530.
Acquiring unit 510 is configured as obtaining first to listen sending out LBT information afterwards.For example, acquiring unit 510 can pass through cell public affairs Instruction information C-PDCCH obtains LBT information altogether.Alternatively, acquiring unit 510 can also obtain LBT information by high-level signaling. Alternatively, acquiring unit 510 can also obtain LBT letters by both the public instruction information C-PDCCH of cell and high-level signaling Breath.
Determination unit 520 is configured as determining LBT parameters according to LBT information, and determines for the transmission of automatic uplink Send parameter.Specifically, it is determined that unit 520 can be executed above with respect to being operated in detail described in the step 302 in Fig. 3, this Place's no longer superfluous words.
LBT operating units 530 are configured as executing LBT operations according to identified LBT parameters, and based on transmission parameter To determine whether to send in automatic uplink signal is sent in resource.Specifically, LBT operating units 530 can execute above For being operated in detail described in the step 303 in Fig. 3, no longer superfluous words herein.
Program for realizing each embodiment function of the disclosure can record on a computer readable recording medium.It can lead to Crossing makes computer system read the program being recorded in the recording medium and executes these programs to realize corresponding function.This So-called " computer system " at place can be built-in the computer system in the equipment, may include operating system or hardware (such as peripheral equipment)." computer readable recording medium storing program for performing " can be semiconductor recording medium, optical record medium, magnetic recording Jie Matter, the in short-term recording medium of dynamic memory program or any other computer-readable recording medium.
It can be by circuit (for example, monolithic or more with the various feature or function modules of equipment in the above-described embodiments Piece integrated circuit) it realizes or executes.The circuit for being designed to carry out this specification described function may include general place Reason device, digital signal processor (DSP), application-specific integrated circuit (ASIC), field programmable gate array (FPGA) or other can compile The arbitrary combination of journey logical device, discrete door or transistor logic, discrete hardware component or above-mentioned device.General procedure Device can be microprocessor, can also be any existing processor, controller, microcontroller or state machine.Foregoing circuit can Can also be analog circuit to be digital circuit.Occur the new of the existing integrated circuit of replacement because of the progress of semiconductor technology Integrated circuit technique in the case of, one or more other embodiments of the present disclosure can also use these new integrated circuit techniques To realize.
In addition, the disclosure is not limited to above-described embodiment.Although it have been described that the various examples of the embodiment, but The disclosure is not limited thereto.Fixation or non-mobile electronic equipment mounted on indoor or outdoors may be used as terminal device or logical Equipment is believed, such as AV equipment, cooking apparatus, cleaning equipment, air-conditioning, office equipment, automatic vending machine and other household electrical appliance Deng.
As above, embodiment of the disclosure is described in detail by reference to attached drawing.But specific structure not office It is limited to above-described embodiment, the disclosure also includes any design change without departing from disclosure purport.Furthermore it is possible in claim In the range of the disclosure is variously changed, it is obtained by being appropriately combined technological means disclosed in different embodiments Embodiment is also contained in scope of the presently disclosed technology.In addition, the component with same effect described in above-described embodiment It can be substituted for each other.

Claims (15)

1. a kind of method that automatic uplink is sent, including：
Acquisition is first listened sends out LBT information afterwards；
LBT parameters are determined according to LBT information, and determine the transmission parameter sent for automatic uplink；And
According to identified LBT parameters come execute LBT operation, and based on the transmissions parameter come determine whether can automatically on Row sends and sends signal in resource.
2. according to the method described in claim 1, wherein it is determined that LBT parameters include：It is sent for automatic uplink and is based on scheduling Uplink send, determine energy measuring threshold value respectively.
3. according to the method described in claim 1, wherein it is determined that LBT parameters include：It is sent for automatic uplink and is based on scheduling Uplink send, independently or part independently determines conflict window size CWS.
4. according to the method described in claim 3, wherein, independently or part independently determines that conflict window size CWS includes Following at least one：
For the same hybrid automatic repeat-request HARQ processing uplink send, respectively determine for automatic uplink send with The CWS that uplink based on scheduling is sent；
The uplink of same hybrid automatic repeat-request HARQ processing is sent, ACK/ corresponding with the transmission of automatic uplink The CWS adjustment that NACK is sent for the uplink based on scheduling, ACK/NACK corresponding with the uplink transmission based on scheduling are not used in The CWS adjustment that the uplink that automatic uplink is sent is sent；And
The uplink of same hybrid automatic repeat-request HARQ processing is sent, ACK/ corresponding with the transmission of automatic uplink NACK is not used in the CWS adjustment of the transmission of the uplink based on scheduling, and ACK/NACK corresponding with the uplink transmission based on scheduling is used for The CWS adjustment that automatic uplink is sent.
5. according to the method described in claim 1, wherein it is determined that LBT parameters include：It is sent for automatic uplink and is based on scheduling Uplink send, determine the maximum value CW of continuous use conflict window CW respectivelyMax, pNumber K.
6. according to the method described in claim 1, wherein, the transmission parameter includes：The resource sent for automatic uplink Time parameter, frequency domain parameter, the type of service that whether can perform the instruction sent or uplink transmission.
7. according to the method described in claim 1, sending signal packet in resource where it is determined whether can be sent in automatic uplink It includes：According to the type of LBT, it is determined whether can be sent in selected automatic uplink and send signal in resource.
8. according to the method described in claim 7, being first kind LBT configured threshold value Thr1 wherein, and being the second class LBT Configured threshold value Thr2, Thr1 are less than Thr2 so that UE is generated described in likelihood ratio of the random number that the UE is generated more than Thr1 Random number it is big more than the probability of Thr2.
9. according to the method described in claim 1, wherein it is determined that transmission parameter includes：According to LBT priority classifications, determination is No can be sent in selected automatic uplink sends signal in resource.
10. according to the method described in claim 9, wherein, threshold value is respectively configured for different LBT priority classifications so that The business of higher LBT priority is sent with larger probability.
11. according to the method described in claim 1, wherein, the parameter that the automatic uplink is sent is preferential for different LBT Grade classification and configure, the UE selects automatic uplink to send resource according to LBT priority classifications.
12. according to the method described in claim 1, wherein it is determined that LBT parameters include：For the uplink hair of automatic uplink It send, only with first kind LBT.
13. according to the method described in claim 1, wherein it is determined that LBT parameters include：When receiving maximum channel holding time MCOT indicate information when, if the sub-frame of uplink that carry out automatic uplink transmission be located at the MCOT indicate information indicated by it is upper In row sub-frame set, then the second class LBT is used.
14. according to the method described in claim 1, wherein it is determined that the transmission parameter that automatic uplink is sent includes：In automatic uplink It sends using in the case of the second class LBT, according to the LBT information of the public instruction information C-PDCCH instructions of cell, determines currently most The LBT priority classifications that the downlink transfer of big Channel holding time MCOT uses, and according to the LBT priority classifications come really Determine the time span that automatic uplink is sent, and/or determines the service class of automatic uplink transmission according to the LBT priority classifications Type QCI.
15. a kind of user equipment (UE), including：
Acquiring unit is configured as obtaining first to listen sending out LBT information afterwards；
Determination unit is configured as determining LBT parameters according to LBT information, and determines the transmission ginseng sent for automatic uplink Number；And
LBT operating units, be configured as according to identified LBT parameters come execute LBT operation, and based on the transmission parameter come Determine whether to send in automatic uplink and sends signal in resource.
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Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020082307A1 (en) * 2018-10-25 2020-04-30 北京小米移动软件有限公司 Hybrid automatic repeat request (harq) feedback method and apparatus
CN111163525A (en) * 2019-12-27 2020-05-15 京信通信系统（中国）有限公司 Resource scheduling method, device, base station equipment and storage medium
CN111163529A (en) * 2018-11-08 2020-05-15 宏碁股份有限公司 Method of handling communications over unlicensed spectrum and related communication device
WO2020143672A1 (en) * 2019-01-09 2020-07-16 FG Innovation Company Limited Method and apparatus for lbt failure detection
CN111465035A (en) * 2019-02-22 2020-07-28 维沃移动通信有限公司 Scheduling method, reporting method and terminal
WO2021007787A1 (en) * 2019-07-16 2021-01-21 北京小米移动软件有限公司 Resource allocation method and apparatus, and storage medium
WO2021062713A1 (en) * 2019-09-30 2021-04-08 Nokia Shanghai Bell Co., Ltd. Resource selection for transmission of pending data unit
CN113259066A (en) * 2020-02-08 2021-08-13 上海朗帛通信技术有限公司 Method and apparatus in a node used for wireless communication
CN113383600A (en) * 2019-02-15 2021-09-10 华为技术有限公司 Data transmission method and data transmission device
WO2021227036A1 (en) * 2020-05-15 2021-11-18 Qualcomm Incorporated Energy detection threshold for wireless communication
CN114615692A (en) * 2019-11-18 2022-06-10 Oppo广东移动通信有限公司 Apparatus and method for wireless communication
WO2022142891A1 (en) * 2020-12-31 2022-07-07 大唐移动通信设备有限公司 Uplink scheduling method and apparatus, and storage medium
CN114978454A (en) * 2020-02-14 2022-08-30 Oppo广东移动通信有限公司 Method, device and equipment for determining hybrid automatic repeat request response codebook

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20160198450A1 (en) * 2013-09-26 2016-07-07 Chao Wei METHOD AND APPARATUS FOR EFFICIENT USAGE OF DAI BITS FOR eIMTA IN LTE
CN106211345A (en) * 2015-01-29 2016-12-07 北京三星通信技术研究有限公司 The sending method of uplink control signal and device
US20170019909A1 (en) * 2015-07-16 2017-01-19 Samsung Electronics Co., Ltd Method and apparatus for adaptive control of contention window in laa
WO2017030417A1 (en) * 2015-08-20 2017-02-23 엘지전자 주식회사 Method and apparatus for controlling contention window size in radio access system supporting unlicensed band

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20160198450A1 (en) * 2013-09-26 2016-07-07 Chao Wei METHOD AND APPARATUS FOR EFFICIENT USAGE OF DAI BITS FOR eIMTA IN LTE
CN106211345A (en) * 2015-01-29 2016-12-07 北京三星通信技术研究有限公司 The sending method of uplink control signal and device
US20170019909A1 (en) * 2015-07-16 2017-01-19 Samsung Electronics Co., Ltd Method and apparatus for adaptive control of contention window in laa
WO2017030417A1 (en) * 2015-08-20 2017-02-23 엘지전자 주식회사 Method and apparatus for controlling contention window size in radio access system supporting unlicensed band

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
HUAWEI等: "R1-166134 "Signaling for UL LBT parameters for eLAA"", 《3GPP TSG_RAN\WG1_RL1》 *
HUAWEI等: "R2-151175 "LBT operation for LAA Uplink"", 《3GPP TSG_RAN\WG2_RL2》 *
QUALCOMM INCORPORATED: "R1-166255 "Remaining details of UL LBT"", 《3GPP TSG_RAN\WG1_RL1》 *

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020082307A1 (en) * 2018-10-25 2020-04-30 北京小米移动软件有限公司 Hybrid automatic repeat request (harq) feedback method and apparatus
CN111163529A (en) * 2018-11-08 2020-05-15 宏碁股份有限公司 Method of handling communications over unlicensed spectrum and related communication device
US11272535B2 (en) 2019-01-09 2022-03-08 Hannibal Ip Llc Method and apparatus for LBT failure detection
WO2020143672A1 (en) * 2019-01-09 2020-07-16 FG Innovation Company Limited Method and apparatus for lbt failure detection
US11805544B2 (en) 2019-01-09 2023-10-31 Hannibal Ip Llc Method and apparatus for LBT failure detection
CN113383600A (en) * 2019-02-15 2021-09-10 华为技术有限公司 Data transmission method and data transmission device
CN113383600B (en) * 2019-02-15 2023-07-18 华为技术有限公司 Data transmission method and data transmission device
CN111465035A (en) * 2019-02-22 2020-07-28 维沃移动通信有限公司 Scheduling method, reporting method and terminal
WO2020169029A1 (en) * 2019-02-22 2020-08-27 维沃移动通信有限公司 Scheduling method, reporting method, and terminal
WO2021007787A1 (en) * 2019-07-16 2021-01-21 北京小米移动软件有限公司 Resource allocation method and apparatus, and storage medium
WO2021062713A1 (en) * 2019-09-30 2021-04-08 Nokia Shanghai Bell Co., Ltd. Resource selection for transmission of pending data unit
CN114615692A (en) * 2019-11-18 2022-06-10 Oppo广东移动通信有限公司 Apparatus and method for wireless communication
CN114615692B (en) * 2019-11-18 2023-11-28 Oppo广东移动通信有限公司 Apparatus and method for wireless communication
CN111163525A (en) * 2019-12-27 2020-05-15 京信通信系统（中国）有限公司 Resource scheduling method, device, base station equipment and storage medium
CN111163525B (en) * 2019-12-27 2022-12-30 京信网络系统股份有限公司 Resource scheduling method, device, base station equipment and storage medium
CN113259066A (en) * 2020-02-08 2021-08-13 上海朗帛通信技术有限公司 Method and apparatus in a node used for wireless communication
CN113259066B (en) * 2020-02-08 2022-07-08 上海朗帛通信技术有限公司 Method and device used in node of wireless communication
CN114978454A (en) * 2020-02-14 2022-08-30 Oppo广东移动通信有限公司 Method, device and equipment for determining hybrid automatic repeat request response codebook
CN114978454B (en) * 2020-02-14 2023-12-08 Oppo广东移动通信有限公司 Hybrid automatic repeat request response codebook determination method, device and equipment thereof
WO2021227036A1 (en) * 2020-05-15 2021-11-18 Qualcomm Incorporated Energy detection threshold for wireless communication
EP4151019A4 (en) * 2020-05-15 2024-01-03 Qualcomm Inc Energy detection threshold for wireless communication
WO2022142891A1 (en) * 2020-12-31 2022-07-07 大唐移动通信设备有限公司 Uplink scheduling method and apparatus, and storage medium

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