CN107667565A - The method and its equipment of resource are distributed in the cellular network using unlicensed band - Google Patents

The method and its equipment of resource are distributed in the cellular network using unlicensed band Download PDF

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Publication number
CN107667565A
CN107667565A CN201680032285.4A CN201680032285A CN107667565A CN 107667565 A CN107667565 A CN 107667565A CN 201680032285 A CN201680032285 A CN 201680032285A CN 107667565 A CN107667565 A CN 107667565A
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China
Prior art keywords
subframe
enb
information
lbt
unlicensed band
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Granted
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CN201680032285.4A
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Chinese (zh)
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CN107667565B (en
Inventor
朴承勋
文廷民
柳善姬
郑柄薰
郑丁寿
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Samsung Electronics Co Ltd
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Samsung Electronics Co Ltd
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Priority claimed from KR1020160039790A external-priority patent/KR102658360B1/en
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Publication of CN107667565A publication Critical patent/CN107667565A/en
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Publication of CN107667565B publication Critical patent/CN107667565B/en
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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/52—Allocation or scheduling criteria for wireless resources based on load
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0446—Resources in time domain, e.g. slots or frames
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0091—Signaling for the administration of the divided path
    • H04L5/0092—Indication of how the channel is divided
    • 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
    • H04L27/00—Modulated-carrier systems
    • H04L27/0006—Assessment of spectral gaps suitable for allocating digitally modulated signals, e.g. for carrier allocation in cognitive radio
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H04L5/0055—Physical resource allocation for ACK/NACK
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • 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
    • 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
    • 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]
    • H04W74/0833—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access] using a random access procedure
    • H04W74/0841—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access] using a random access procedure with collision treatment
    • H04W74/085—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access] using a random access procedure with collision treatment collision avoidance
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • 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

Abstract

A kind of 5G or quasi- 5G communication systems are disclosed, it is provided to support the high message transmission rate of the message transmission rate of the 4G communication systems than such as LTE etc.Disclose a kind of method and apparatus for being used to transmit information in a communications system.Method for distributing resource in the cellular network using unlicensed band comprises the following steps：At least one resource allocation signal is generated, at least one resource allocation signal includes the information for multiple continuous uplink subframes that instruction can be communicated by unlicensed band；Resource allocation signal is sent to user equipment (UE) by unlicensed band within the duration of at least one downlink subframe；And receive uplink data from UE within the duration of continuous uplink subframe.

Description

The method and its equipment of resource are distributed in the cellular network using unlicensed band
Technical field
This disclosure relates to a kind of is unlicensed band in the system for the resource of device-to-device communication is shared The method and apparatus that (unlicensed band) distributes resource.
Background technology
In order to meet the demand of the 4th generation (4G) communication system wireless data service growing since being commercialized, Make great efforts to develop improved 5th generation (5G) communication system or quasi- 5G (pre-5G) communication system.Therefore, 5G communication systems or quasi- 5G lead to Letter system is also referred to as super 4G network communicating systems or rear Long Term Evolution (LTE) system.
In order to realize high data rate, considering to realize 5G in hyperfrequency (mm ripples) frequency band (for example, 60GHz frequency bands) Communication system.In 5G communication systems, beam forming, extensive multiple-input and multiple-output (MIMO), full dimension have been discussed MIMO (FD-MIMO), array antenna, analog beam shaping and extensive antenna technology in SHF band to mitigate propagation path It is lost and increases propagation distance.
For grid improve, in 5G communication systems, developed such as evolution cell, advanced cell, Cloud radio access network (RAN), super-intensive network, device-to-device (D2D) communication, wireless backhaul, mobile network, cooperation are logical The technology of letter, coordinating multiple points (CoMP) and interference elimination etc.
In 5G systems, develop including mixing frequency shift keying (FSK) and quadrature amplitude modulation (QAM) modulation (FQAM) and sliding window supercomposed coding (SWSC) higher level code modulation (ACM) scheme, and including filter bank multi-carrier (FBMC), the advanced access scheme of non-orthogonal multiple (NOMA) and Sparse Code multiple access (SCMA).
In order to improve the speed and capacity of LTE network in company with LTE development, have studied such as using shared frequency band Unlicensed spectrum (unlicensed spectrum) in LTE (LTE-U) etc improved technology.LTE-U authorizes auxiliary Access (Licensed-Assisted Access, LAA) refers to authorize frequency spectrum by using carrier aggregation (CA) to integrate (licensed spectrum) or authorized frequency bands (licensed band) and unlicensed spectrum (unlicensed Spectrum) or unlicensed band and the authorized frequency bands for existing LTE communication, and stable authorized frequency bands conduct is used Anchor point (anchor) handles all control signals and signaling, so as to support service quality (QoS) and smooth ambulant skill Art.In addition, LTE-U or LAA ensures wide data pipe based on the extension to unlicensed band, so as to provide the user improvement Mobile broadband is experienced.
Because unlicensed band is the available shared frequency band of any technology or equipment, so most countries have formulated pass In the rule using unlicensed band.In order to reduce the interference between the equipment in unlicensed band, unlicensed band is used The transimission power of equipment may be limited in the level lower than authorized frequency bands.
For coming as the transmission rule of licensing free frequency band or the shared frequency band of unlicensed band provides various types of schemes Mitigate the signal interference between equipment, such as limit transimission power to prevent the receiving power in specific range to be more than or equal to spy The scheme of definite value, skip the position in time or frequency resource or only allow the scheme using some in total resources, monitor and Signal from another equipment and allow scheme of transmission, etc. when the receiving power when signal is less than particular value.
Such as LTE etc existing cellular communication needs resource allocation process based on channel measurement and adaptively determined The link circuit self-adapting of the transmission capacity of transmission/receives link.However, established for it different communication systems coexist rule In the shared frequency band of such as unlicensed band etc, it is possible that Railway Project in the application of existing resource allocative decision. As a result, there is the demand to the new resources allocative decision for the communication using unlicensed band.
The content of the invention
Technical problem
Present disclose provides a kind of method and apparatus for sending and receiving signal in a communications system.
The disclosure additionally provides a kind of physical channel ginseng for being used to control communication link in the system of shared communication resource Several method and apparatus.
The disclosure additionally provides a kind of side for being used to distribute resource for the cellular network of the resource in shared unlicensed band Method and device.
The disclosure additionally provides a kind of for distributing resource to solve due to the Listen Before Talk in unlicensed band (LBT) delay increase caused by failure and method and apparatus the problem of signalling loads increase.
The disclosure additionally provides a kind of cellular communication for being used to minimize loss and be effectively used in shared frequency band Frequency band method and apparatus.
Technical scheme
The method of the distribution resource being used in the cellular network using unlicensed band in accordance with an embodiment of the present disclosure Including：At least one assignment of resources signal is generated, at least one assignment of resources signal passes through unlicensed band including instruction The information of multiple continuous uplinks (UL) subframe that can be communicated, is awarded during at least one downlink (DL) subframe by non- Weigh frequency band and send assignment of resources signal to user equipment (UE), and UL data are received from UE during continuous UL subframe.
The reception resource allocation being used in the cellular network using unlicensed band in accordance with an embodiment of the present disclosure Method includes：Receive at least one assignment of resources signal from enode b (eNB) during at least one DL subframe, it is described extremely A few assignment of resources signal includes the information for multiple continuous UL subframes that instruction can communicate by unlicensed band, based on resource Assignment signal and other control signals identify multiple continuous UL subframes, and send UL numbers to eNB during continuous UL subframe According to.
The eNB bags for being used to distribute resource in the cellular network using unlicensed band in accordance with an embodiment of the present disclosure Include：Controller, it is configurable to generate at least one assignment of resources signal, and at least one assignment of resources signal includes instruction The information for the multiple continuous UL subframes that can be communicated by unlicensed band；And transceiver, it is configured as at least one DL Assignment of resources signal is sent to UE during frame, and UL data are received from UE during multiple continuous UL subframes.
The UE for being used to receive resource allocation in the cellular network using unlicensed band in accordance with an embodiment of the present disclosure Including：Transceiver, be configured as receiving at least one assignment of resources signal from eNB during at least one DL subframe, it is described extremely A few assignment of resources signal includes the information for multiple continuous UL subframes that instruction can communicate by unlicensed band, and even UL data, and controller are sent to eNB during continuous UL subframe, is configured as based on assignment of resources signal and other control signals To identify multiple continuous UL subframes, and to the continuous UL subframe that transceiver notice is identified.
Brief description of the drawings
From following description with reference to the accompanying drawings, above and other aspect, the feature of some exemplary embodiments of the disclosure It will be apparent from advantage.
Figure 1A and Figure 1B shows the communication process using unlicensed band；
Fig. 2 shows the mistake of the transmission capacity of transmission/receives link in the existing cellular communication for determination such as LTE Journey；
Fig. 3 A show the example of downlink (DL) scheduling process suitable for embodiment of the disclosure；
Fig. 3 B show the example of up-link (UL) scheduling process suitable for embodiment of the disclosure；
Fig. 4 A show the frame structure of the unlicensed band suitable for embodiment of the disclosure；
Fig. 4 B show the radio frame structure suitable for embodiment of the disclosure；
Fig. 5 shows single sub-frame resource allocation in accordance with an embodiment of the present disclosure；
Fig. 6 shows more sub-frame resources distribution in accordance with an embodiment of the present disclosure；
Fig. 7 shows mixing sub-frame resources distribution in accordance with an embodiment of the present disclosure；
Fig. 8 shows multiframe resource allocation in accordance with an embodiment of the present disclosure；
Fig. 9 shows the transmitting procedure for being used for UL licenses and UL data in existing LTE system；
Figure 10 show in accordance with an embodiment of the present disclosure using timing slip UL license and UL data transmitting procedure；
Figure 11 and Figure 12 shows that the UL of the beginning and end of the continuous UL subframe of instruction in accordance with an embodiment of the present disclosure is permitted Can be with the transmitting procedure of UL data；
Figure 13 to Figure 16 shows the beginning for being used to semi-statically indicate continuous UL subframe in accordance with an embodiment of the present disclosure With the UL licenses and the transmitting procedure of UL data for terminating (length)；
Figure 17 to Figure 21 shows the hybrid automatic repeat-request set for multiple subframes in accordance with an embodiment of the present disclosure (HARQ) procedure identifier (ID)；
Figure 22 is to show the enode b (eNB) for being used to perform multiframe resource allocation in accordance with an embodiment of the present disclosure The flow chart of operation；
Figure 23 is to show the behaviour for being used to receive the user equipment (UE) of multiframe resource allocation in accordance with an embodiment of the present disclosure The flow chart of work.
Figure 24 is to show the process for being used to transmit multiple UL (M-UL) licenses and data in accordance with an embodiment of the present disclosure Flow chart；
Figure 25 is to show the eNB for being used for transmission block and confirming (ACK)/negative ACK (NACK) in accordance with an embodiment of the present disclosure Operation flow chart；
Figure 26 is the flow chart for the operation for showing the UE for receiving block ACK/NACK in accordance with an embodiment of the present disclosure；
Figure 27 is the hidden node problem for describing Wireless Fidelity (Wi-Fi) network in accordance with an embodiment of the present disclosure View；
Figure 28 is the block diagram of UE in accordance with an embodiment of the present disclosure；With
Figure 29 is the block diagram of eNB in accordance with an embodiment of the present disclosure.
Through accompanying drawing, similar reference will be understood as referring to same or similar element, feature and structure.
Embodiment
Hereinafter, embodiment of the disclosure will be described with reference to the drawings.
When describing embodiment of the disclosure, will not describe known and not straight with the disclosure in the technical field of the disclosure Connect the technical problem of correlation.By omitting unnecessary description, the theme of the disclosure will be described more clearly without by mould Paste.
By the same token, it will exaggerate in accompanying drawing, some elements are omitted or simplified.The size of each element is not fully Reflect the actual size of element.In each figure, identical or corresponding element will be referred to as identical reference.
With reference to the embodiment described below in conjunction with the accompanying drawings, the advantages of the disclosure and feature and realize that their method will be Clearly.It however, the disclosure is not limited to the disclosed embodiments, but can in a variety of ways realize, and embodiment is provided To complete the disclosure of the disclosure, and those of ordinary skill in the art are allowed to understand the scope of the present disclosure.The disclosure passes through right It is required that classification define.Through specification, identical reference will indicate identical element.
It should be appreciated that can be by computer program instructions come the graphic each block of implementation process figure and flowchart illustration Combination.These computer program instructions can also be stored in all-purpose computer, special-purpose computer or the processing of other programmable datas In the processor of equipment so that realize that the instruction of computer or the processor of programmable data processing device is generated for performing The device (means) for the function of being specified in (one or more) flow chart block.These computer program instructions can also be stored in Computer is available or computer-readable memory in, computer is available or computer-readable memory bootable computer or other Programmable data processing unit works in a specific way so that be stored in that computer is available or computer-readable memory in Instruction generation includes realizing the product of the instruction for the function of specifying in (one or more) flow chart block.Computer program instructions are also It can be loaded into computer or other programmable data processing units to cause on computer or other programmable devices Series of operation steps is performed to generate computer implemented process so that performed on computer or other programmable devices Instruction provides the step of being used to realize the function of specifying in (one or more) flow chart block.
In addition, the part of each block representation module, section or code, it includes being used to realize that (one or more) specified is patrolled Collect one or more executable instructions of function.It shall also be noted that in other implementations, pointed out in (one or more) block Function may occur in reverse order.For example, depending on involved function, two blocks continuously shown can essentially base This is performed simultaneously, or can perform block with inverted order sometimes.
In an exemplary embodiment of the present invention, as used herein term "Unit " represents to perform some tasks Software or nextport hardware component NextPort, such as field programmable gate array (FPGA) or application specific integrated circuit (ASIC).But "Unit " Implication is not limited to software or hardware." unit " can be advantageously configured to reside on addressable storage medium and by with It is set to reproduction one or more processors.Therefore, "Unit " can include such as such as software of component software, object-oriented It is component, the component of class component and task component, process, function, attribute, process, subroutine, program code segments, driver, solid Part, microcode, circuit, data, database, data structure, table, array and variable.Component and "The function of being provided in unit " Can be combined into less component and "Unit ", or be further divided into other component and "Unit ".It is furthermore, it is possible to real Show component and " (one or more) unit " to perform one or more CPU in equipment or secure multimedia card.
Although it will focus on the wireless communication system with particular channel structure when embodiment of the disclosure is described in detail It is described, but claimed main subject matter is also applied for have the other logical of similar techniques background in this manual Without deviating significantly from scope disclosed herein, this is apparent for those of ordinary skill in the art for letter system and service 's.
Before embodiment of the disclosure is described in detail, interpretable contain will be provided for several terms used herein The example of justice.It should be noted, however, that the implication of term is not limited to Examples provided below.
Base station (BS) is the entity to be communicated with user equipment (UE), is referred to as BS, base transceiver station (BTS), node B (NB), enode b (eNB), access point (AP) etc..Especially, it is at least one in embodiment of the disclosure described below Can including main eNB and auxiliary eNB heterogeneous network (HetNet) in realize, and main eNB can be referred to as grand BS, master it is small Area (PCell) etc., and aid in eNB to be referred to as small BS, secondary cell (SCell) etc..
UE is the entity to be communicated with eNB, is referred to as UE, equipment, mobile station (MS), mobile device (ME), terminal etc..
In heterogeneous network, UE sends and receives primary system information and control signal, and such as voice etc is exchanged with PCell Motion sensitive business, and the business important to instant transmission amount of such as data etc is exchanged with SCell.Here, PCell can To be arranged to authorized frequency bands (licensed band), and SCell can be configured to shared frequency band, i.e. unlicensed band.This The example of the cellular communication system of type can include LTE and authorize auxiliary access (LAA) system.In addition using shared frequency band UE can be referred to as LAA UE, and can be referred to as LTE UE using only the UE of existing authorized frequency bands.
UE in eNB regions is in radio resource control (RRC) idle condition or RRC connection status.
- RRC the free time (RRC IDLE)：UE selection eNB (or cell), PCH is monitored, and obtains system information (SI), But data are not exchanged with eNB.
- RRC connections (RRC CONNECTED)：UE monitors control channel, and exchanges data with eNB by data channel.UE The various measurement results of report eNB and adjacent eNB are to help eNB scheduling.
It is divided into the equipment (FBE) based on frame and the equipment (LBE) based on load using the equipment of unlicensed band.Now will Communication process based on each equipment is described.
Figure 1A shows the communication process that unlicensed band is used for FBE.
With reference to figure 1A, transmitter performs clear channel assessment (CCA) (CCA) before transmission 104 is performed by unlicensed band 102 at least 20 μ s (microsecond).CCA 102 is transmitter measurement interference magnitude to determine it is non-whether another equipment is currently used The operation of authorized frequency bands.If the interference magnitude as CCA outcome measurement is more than or equal to particular value, transmitter does not perform Send, and if the interference magnitude of measurement is less than particular value, then perform and send 104.Sending 104 has fixed frame period 110, And the timing since the frame that immediately the CCA periods continue.Transmitter is taken from most short by performing a CCA 1ms to most long 10ms unlicensed band (106), and must be during the minimum 5% of Channel holding time (COT) 106 not Perform and send and be in the free time.This is referred to as free time section 108.If the result as CCA 102 determines that another equipment is worked as Before unlicensed band is used, then transmitter performs CCA again after fixed frame period 110.
Figure 1B shows the communication process that unlicensed band is used for LBE.
With reference to figure 1B, with FBE, transmitter performs CCA before transmission 116 is performed by unlicensed band 112 at least 20 μ s.If the result as CCA 112 determines that unlicensed band is used in no equipment, transmitter performs Send.However, if it is determined that unlicensed band is being currently used in another equipment, then different from FBE situation, transmitter performs Additional CCA 114.This is referred to as extending CCA (ECCA) 114.ECCA114 includes n times CCA, and wherein N instructions are selected at random in [1, q] The backoff counter value selected, q instruction competition window sizes (CWS).It can be given by eNB or CWS is determined by UE.If as ECCA 114 result determines that unlicensed band is being currently used in no equipment, then transmitter, which performs, sends 116.Transmitter can To take the time of unlicensed band, i.e. COT118 maximum is (13/32) * q ms, and transmitter performs ECCA again afterwards, And during transmitter performs ECCA time, transmitter has free time section 120.
FBE and LBE has the advantage that respectively and shortcoming.Probability in view of taking unlicensed band, LBE can be than FBE table Reveal better performance.Because once failing in CCA, FBE possibly can not be performed again in fixed frame period CCA, and LBE can perform ECCA after CCA failures, that is, n times add CCA, to take unlicensed band.Next, examine Consider the transmission of scheduling, i.e. control channel, FBE is simpler than LBE.FBE can be based on sub-frame boundary, i.e. control channel transmission is determined When use unlicensed band.However, LBE is arbitrarily selected as the N of CCA number in ECCA so that begins to use unauthorized frequency The timing of band may be inconsistent with sub-frame boundary.Therefore, LBE retains a part for the first subframe, and since the second subframe Perform the transmission of control channel and data channel.The Wi-Fi that FBE is less damaged near shared unlicensed band than LBE is set It is standby.Generally, LBE has takes unlicensed band than FBE more high probabilities, it means that Wi-Fi equipment occupies more chances To take unlicensed band.
Meanwhile when using unlicensed band, UE is also required to keep the connection with authorized frequency bands, with mobile environment It is middle that reliable cellular communication service is provided.Therefore, service voice to delay-sensitive etc. is sent in authorized frequency bands, and Data, services are sent using authorized frequency bands, and in time send unlicensed band, so as to improve possible data transfer rate.
Fig. 2 shows the transmission capacity of transmission/receives link in the existing cellular communication for determination such as LTE etc Process.
With reference to figure 2, in DL, UE measures eNB reference signal (RS) 202, and passes through CQI (CQI) 204 by RS 202 signal quality reporting to eNB.ENB RS 202 can include generally giving to the institute in eNB coverage There are UE public/cell specific reference signal (CRS) or channel state information reference signals (CSI-RS), or assign particular UE The specific RS of UE.UE can be controlled from eNB with by CQI 204 periodically or non-periodically to eNB reporting channel qualities.UE makes Periodic report is carried out with UL control channels, and uses UL data channels to carry out aperiodicity report.
ENB performs scheduling to determine the UE of Physical Resource Block to be allocated, and based on operation based on the CQI 204 that UE is reported Scheduling result in 206 and 208 provides UE specific distribution information to scheduled UE.Indicate the money of the position of the DL resources of distribution Assign (or distribution) signal (or UL/DL licenses) and non-resource assignment information (that is, such as modulation and encoding scheme (MCS) index in source With the physical parameter of hybrid automatic repeat-request (HARQ) relevant information etc) by UE mark (for example, cell radio net Network temporary mark (C-RNTI) or mobile broadcast service (MBMS) RNTI (M-RNTI)) scrambled, and pass through physical down chain Road control channel (PDCCH) is sent, and the UE for having been received by assignment of resources signal passes through the thing by assignment of resources signal designation Reason resource block receives DL data on physical down link sharing channel (PDSCH).
For UL, eNB measures the RS from UE to distinguish UL signal qualitys.UE RS can be eNB periodically (2- 320ms) distribute to the detection RS (SRS) of particular UE.It is different from current standard, for the operation in shared frequency band by UE The UL that can be used for the demodulation RS (DMRS) sent together with UL data in unlicensed band is measured.Based on by being sent from UE RS measurement obtain CQI, eNB perform for determine to be allocated Physical Resource Block UE UL scheduling, and based on adjust Spend result and provide UE specific distribution information to scheduled UE.Indicate that the assignment of resources signal of distributed UL resources passes through UE's Identification information is scrambled and sent by PDCCH, and has been received by the UE of assignment of resources signal by being believed by assignment of resources Number instruction Physical Resource Block physically on ink Shared Channel (PUSCH) send UL data.
Until eNB completes the link adaptation and channel measurement for UE, due to necessary signal transmission/reception and processing, Need the time delay longer than the scheduled time.For example, the DL operations with reference to shown in figure 2, it is each to measure that UE consumes two subframes The RS 202 (for example, CRS) that DL subframe is sent from eNB, and the physical uplink link by distributing to each UL subframe controls letter Report CQI 204 in road (PUCCH).ENB needs a subframe to perform channel estimation 206, and depending on implementation needs 1 Scheduling 208 to k subframe to perform for resource allocation and for determining MCS indexes.Accordingly, it is possible to minimum CQI feedback Delay 212 is 4ms.
Because SRS minimum time section is 2 subframes in UL, so one subframe delay of more generations than in UL, makes It is minimum 5ms to obtain CQI feedback delay 212.Increase with SRS period, total CQI feedback delay also increases.
As such, as measurement period RS, existing LTE system can provide the CQI feedback delay of minimum.However, Establish the shared frequency band that rule coexists of different communication systems, in such as unlicensed band, in existing resource allocative decision should It is possible that three problems as described below in.
1) periodicity RS measurement is inaccurate
2) radio resource is discontinuously used
3) CQI constant time lag
On first problem, because LBT is provided, it is impossible to ensure that eNB sends periodicity RS, or although be not specified by asking Topic, but there may be the change of the serious amount of the measurement to periodicity RS.UE is held in the RS of periodic allocation position Row measurement, and if eNB LBT attempts failure, then can perform measurement in the unactual resource location for sending RS.All Such as the given area in Europe, even if with LBT regulations, short control signal can also be sent in the case of without using LBT (SCS).SCS must be designed such that transmitter by only taking up 5% resource in 50ms to send SCS.It is i.e. enabled It is enough to carry out periodic RS transmission by this way, UE may also undergo from adjacent Wi-Fi AP/UE or asynchronous cell eNB or Belong to asynchronous cell eNB LTE UE discontinuous interference.The reason for discontinuous interference is probably CCA or concealed nodes.For example, If setting CCA threshold values to UE, the UE for receiving signal from the non-serving eNB with the power higher than CCA threshold value is not sent out Give its signal.In this case, the transmission possibility of the equipment adjacent with eNB may from when eNB LBT success when to work as Different during eNB LBT failures, the amount of causing interference with is significantly different.Interference volume causes the inaccuracy that RS is measured.When being sent out in UL When sending UE SRS, first problem also occurs in an identical manner.
Second Problem corresponds to the situation when measuring aperiodicity RS.That is, even if eNB is sent periodically RS, depending on LBT successes or failure, as a result measurement of the UE execution to aperiodicity RS, this causes measurement error problem. LBT successes are still unsuccessfully arbitrary so that the channel that measures and are measured when LBT finally succeeds when LBT currently succeeds Channel is very likely different from each other.When multiple continuous subframes are assigned in a UE, eNB can be based on surveying in previous subframe The channel quality of amount performs scheduling, but as described above, prolonging at least 4ms may be generated between channel measurement and resource allocation Late.That is, the resource allocation based on the CQI measured in the n-th subframe may be carried out in (n+4) subframe.Therefore, such as There is big difference in fruit, then can not may keep away between the timing when LBT finally succeeds and the timing when LBT currently succeeds Transmission in current preceding four subframes is performed based on the channel measured value of inaccuracy with exempting from.
3rd problem is the additional deferral time that generation is used to report CQI, and this make it that accurate channel measurement is difficult.When When data transfer is performed in DL, it is possible that this problem.That is, when measurement eNB RS UE uses eNB distribution When UL resources perform report, if eNB fails for FBE CCA, generate the delay of four subframes or more subframe with New license is received in UE；If UE is used for the CCA failures for reporting measurement, four subframes or more subframe may be generated Additional delay.In the same circumstances, for LBE, the various UE in eNB can be competed to send measurement report on UL.
In embodiment described below, it will be considered that three problems of above-mentioned derivation propose can be by the money of minimization of loss Source allocative decision.
Difficulty in being measured due to periodic channel, so UE is based on the channel measured value obtained after eNB LBT successes Perform CQI and busy channel.Therefore, resources of the eNB to UE distribution times upper adjacent subframe.
Although using aperiodicity channel measurement, minimum 5ms in minimum 4ms delay and UL can be generated in DL Delay.Thus, for example, in DL, only after COT is longer than at least 4ms, the CQI measured in the first subframe just can be anti- Reflect in scheduling.As a result, based on the accurate CQI during 4ms, eNB may not pin perform MCS in four frames and determine, so as to for The conservative MCS indexes of subframe selection.
If UE LBT failures, that is, detect busy channel, then UE needs to receive resource allocation from eNB again, and can be with Generate the delay of the 7ms for resource allocation, including dispatch request (SR), 3ms interval, UL licenses, 4ms interval, sum According to the order of transmission.Therefore, if it is determined that LBT mortalitys are high, then eNB can be continuous subframes distribution money by single license Source.
Fig. 3 A show the example of the DL scheduling processes suitable for embodiment of the disclosure.
With reference to figure 3A, in operation 302, eNB sends instruction physical channel parameters (for example, MCS ropes by PDCCH to UE Draw) and the resource that passes through dispatching distribution DL resource informations.In operation 304, eNB passes through the thing that is indicated by DL resource informations The PDSCH managed on resource block sends user data.In operation 306, UE is sent as the HARQ responses on user data ACK/NACK.4ms delay may be generated between DL user data and ACK/NACK.If HARQ responses are NACK, ENB retransmits user data in operation 308.
Fig. 3 B show the example of the UL scheduling processes suitable for embodiment of the disclosure.
With reference to figure 3B, in operation 312, the UE with the user data to be sent in UL or control information passes through PUCCH sends SR to eNB.In operation 314, eNB performs scheduling in response to SR, and is sent by PDCCH with dispatching phase Corresponding UL licenses, i.e. UL resource informations.Scheduling may consume such as 3ms.In operation 316, UE passes through by UL resource informations PUSCH on the Physical Resource Block of instruction sends user data, buffer state reports (BSR) or power headroom reporting (PHR) (PHR). In order to be ready to pass through PUSCH UL transmission, it may be necessary to 4ms.In operation 318, eNB passes through Physical HARQ Indicator Channel (PHICH) ACK/NACK on the UL receptions by PUSCH is sent.
Fig. 4 A show the FBE frame structures for unlicensed band suitable for embodiment of the disclosure.
With reference to figure 4A, in FBE frame structures, it is contemplated that LTE structures, a frame duration 402 can include 10 sons Frame, i.e. 10ms.For COT 406 and free time section 408, it is necessary to perform resource allocation so that eNB meets regulation requirement.Example Such as, if COT 406 is 9ms, free time section 408 needs 5% (9*0.05=0.45) for being longer than COT 406.According to rule Provisioning request, the free time section 408 in a 10ms frame duration 402 can be 1ms.
Fig. 4 B show the radio frame structure suitable for embodiment of the disclosure.
With reference to figure 4B, a radio frame 412 includes 10 subframes, and each subframe can depend on UL/DL sub-frame configurations And it is used as DL subframe 414, special subframe 416 or UL subframe 418 to operate.In a radio frame 412, height is passed through by eNB Layer signaling configures the role of subframe, quantity and position.Special subframe 416 is present between DL subframe 414 and UL subframe 418 simultaneously And including down link pilot timeslot (DwPTS), off time section (GP) and uplink pilot time slot (UpPTS).Shown In example, in the UL/DL subframe structures used in unlicensed band, DL subframe is allocated contiguously and next UL subframe is connected Continuous distribution.
ENB performs LBT in the CCA periods 404 transmitted for signal, and if it is determined that channel is sky (that is, LBT Success), then perform resource allocation.It is described below by the various embodiments of the eNB resource allocations performed.
Fig. 5 shows single sub-frame resource allocation in accordance with an embodiment of the present disclosure.
With reference to figure 5, in each subframe included in the COT 504 in frame duration 502, eNB passes through control channel (PDCCH or ePDCCH) 506a or 506b come notify UE resource location and resource allocation information (e.g., including MCS indexes and/ Or HARQ relevant informations).UE performs according to the control channel 506a or 506b of each subframe in each subframe 508a or 508b Data communicate.From subframe #0 to subframe #3, eNB does not have previous CQI, so as to according to the transformat determined by eNB (MCS indexes etc.) come determine resource allocation information without reflect CQI.Therefore, from subframe #0 to subframe #3 control channel It is likely to indicate identical transformat.
Fig. 6 shows more sub-frame resources distribution in accordance with an embodiment of the present disclosure.
The control channel for passing through the first subframe in the frame duration 602 after LBT successes with reference to figure 6, eNB (PDCCH or ePDCCH) 606 notify COT 604 in other subframes UE resource location and resource allocation information (for example, MCS indexes and/or HARQ relevant informations).UE is held in the subframe 608a and 608b corresponding to the control channel 606 of the first subframe Row data communication.The resource allocation to multiple subframes is performed by using the control channel 606 of a subframe, it is possible to reduce control The load of channel, but eNB may not be based on distributing appropriate transmission lattice from the CQI that subframe #0 is reported since subframe #4 Formula (MCS indexes etc.).
Fig. 7 shows mixing sub-frame resources distribution in accordance with an embodiment of the present disclosure.
With reference to figure 7, more subframe control channels 706 for subframe #0 to #3 and the single sub-frame control for subframe #4 to #8 Channel 710a and 710b are separated.That is, eNB passes through the first subframe in the frame duration 702 after LBT successes Control channel (PDCCH or ePDCCH) 706 notifies predetermined quantity (for example, four) the subframe 708a's and 708b in COT 704 UE resource location and resource allocation information.UE the control channel 706 corresponding to the first subframe four subframe 708a and Row data communication is held in 708b.ENB can be based on the CQI reported from subframe #0, the biography adaptively distributed since subframe #4 Transport format.Therefore, the control channel 710a and 710b for the subframe after the subframe #4 in COT 704 include true based on CQI Fixed resource location and resource allocation information, and UE is in each of the control channel 710a and 710b corresponding to subframe #4 to #8 Row data communication is held in subframe 712a and 712b.
Fig. 8 shows multiframe resource allocation in accordance with an embodiment of the present disclosure.
With reference to figure 8, pass through the control channel of the first subframe in the first frame duration 802 after LBT successes 806, eNB notify the first frame duration 802 and the UE from its at least one frame duration 804 continued resource location And resource allocation information.Multiple correspondences of the UE using the control channel 806 of the first frame in multiple frame durations 802 and 804 Row data communication is held in subframe 808a and 808b.
In order to perform the resource allocation for multiple subframes (or subframe, hereafter referred to collectively as multiple subframes), control letter in advance Road needs the assignment of resources signal for including the information comprising the resource on additional allocation.ENB can include being used for more subframes money The assignment of resources of source distribution distributes signal, used for being distinguished from the existing resource assignment signal for single sub-frame resource allocation In the identifier of the assignment of resources signal of more sub-frame resources distribution.In embodiment, identifier can include being used to indicate in the future The absolute value or System Frame Number (SFN) of the subframe numbers of the position of the resource to be distributed, or Current resource is sent by it and assigned The skew of the subframe (frame or subframe unit) of signal.ENB can also include instruction in more sub-frame resources assignment signals will include N The information of the additional allocation of individual subframe (or N number of frame).
Once receiving control channel, UE determines that whether control channel includes existing assignment of resources signal (that is, list Frame resource allocation) or for more sub-frame resources distribution new assignment of resources signal.Distributed for more sub-frame resources, UE is based on working as Before the assignment of resources signal that receives identify the position of the resource of distribution (across multiple subframes or multiple frames).UE is being identified Resource location holds row data communication.
If configuring CCA before the resource location of distribution for LBT, UE determines whether that receiving RS or channel ensures to lead to Signal (channel securing notification signal) is known, to check whether service eNB already ensures that channel. Once receiving RS or channel from service eNB ensures notification signal, UE just assigns in more sub-frame resources by receiving in advance Signal and in the resource location that distributes in advance, row data communication is held according to the transformat indicated by servicing eNB.Pass through for UE PCell or other SCell receive the situation of license, and eNB indicates whether to check that eNB RS or channel ensure notification signal to UE.
For UL, eNB performs LBT by more sub-frame resources assignment signals before the resource being previously assigned.If LBT into Work(, then the transformat that UE is indicated in advance according to eNB, biography is performed in the position for the resource being previously assigned by assignment of resources signal It is defeated.If UE LBT failures, UE is waited until the next CCA periods being previously assigned to perform identical LBT operations. , can be with for the multiple resources distributed by single resource allocation and the CCA performed before the position of resource, UE in embodiment LBT is optionally performed only for some CCA, rather than LBT is performed for all CCA.To be that it performs this selective LBT (one or more) resource can be set by eNB, or can randomly or under certain conditions be selected by UE.
In embodiment, UE can send LBT success/failure information to eNB.LBT success/failure information can be with UL data or feedback signal are sent together, and can include corresponding to the bitmaps of multiple CCA periods, subframe index, successfully/ Failure subframe numbers etc..In embodiment, UE can be by the LBT success/failure informations in previous subframe immediately or first The dispatch id (for example, C-RNTI or M-RNTI) of UE in preceding subframe or present sub-frame is reported to eNB.According to the report from UE Accuse, eNB can determine that the transmission for distributing to the UE of previous subframe is delayed by a subframe because LBT fails.Depending on system, Dispatch id can be replaced by HARQ procedure ID.
[configurations of multiple UL (M-UL) licenses]
In existing LTE system, eNB permits (that is, an assignment of resources signal) to indicate one by using a UL The UL resources and configured transmission (MCS indexes etc.) of individual UL subframe.Generally, the timing of UL licenses and the position of UL resources are being sent Minimum 4ms interval is needed between (for example, being assigned with PUSCH UL subframe).The interval is based on UE and permits it receiving UL Configuration determines comprising the time needed for the UL transmission blocks of data is transmitted afterwards.In existing LTE standard, in order to simplify operation, The PUSCH that UL permits and distributed is designed to be operated with the fixed intervals of the 4ms between them.Following<Table 1>Show Information element (IE) field included in the UL licenses gone out in existing LTE system.
[table 1]
UL licenses can include at least one of following：Indicate the lattice for the DL control information (DCI) that UL licenses include The mark (mark distinguished for the form 1A of form 0/) of formula, indicate whether to apply the frequency hopping mark of frequency hopping in the resource of distribution The resource block for the position that will, the N_ULhop at indicative of frequency hopping interval, instruction distribute resource assigns (RBA), MCS, redundancy versions (RV), new data indicator (NDI), cyclic shift (CS) information for DMRS sequences, for time division duplex (TDD) pattern UL subframe index, the DL for tdd mode assign index (DAI), CQI request, assignment of resources type and transmission power control (TPC)。
By the position of the UL resources of RBA fields instruction distribution, and due to the number of the resource block (RB) on bandwidth (BW) Amount is given as Max_RB, so the RB distributed quantity is N_RB=floor (RBA/Max_RB)+1, and the RB distributed Starting position be RB_offset=RBA mod Max_RB.Here, by the UL licenses in initial transmission and by re-transmission PHICH indicate RB_offset.ENB can indicate the CS and RB_offset of the DMRS for retransmitting packet by PHICH Change.
In embodiment, in order to distribute multiple UL resources (subframe or frame), using multiple licenses, and each UL licenses can To indicate a UL resource.At least one UL that each UL licenses instruction provides in a UL subframe on time/frequency domain Resource block.Therefore, eNB can be specified differently permits to corresponding PUSCH interval from UL, to indicate UE in multiple UL subframes It is middle to use UL resource blocks.
In another embodiment, eNB can be come for continuous UL subframe distribution UL RB by using a license.According to LBT characteristic, discontinuous resource, which accesses to attempt to cause frequently to compete and add another equipment, ensures the possibility of channel so that If resource assures success once, continuous use resource is effective.
If being used for the PUSCH transmission of N number of continuous UL subframe by a license instruction, eNB can indicate wherein may be used With the UL subframe for performing LBT UL subframe and can wherein performing PUSCH transmission.In another embodiment, eNB can be indicated The UL subframe of both LBT and PUSCH transmission can wherein be performed and wherein can only perform the UL frames of PUSCH transmission.Implementing Example in, eNB also can indicate that the UL subframe that can wherein perform both LBT and SRS transmission, or can wherein perform LBT and Both UL subframes of Physical Random Access Channel (PRACH) transmission.UE dedicated control signals or common control signal can be used To indicate UL subframe.It is, for example, possible to use common control signal indicates to be able to carry out LBT UL subframe.
The each of the method for the UL subframe for indicating to be used for LBT and PUSCH transmission chance (occasion) by eNB is described below Kind embodiment.
A) according to the instruction of N number of LBT UL subframes and N number of PUSCH transmission chance, LBT UL subframes and PUSCH transmission chance Operated (N is positive integer) based on one-to-one corresponding.In the case of at least one LBT failures, the PUSCH transmission that actually performs The quantity of chance is equal to or less than N.ENB can indicate LBT chances and PUSCH chances using identical control signal.
B) according to the instruction of N number of LBT UL subframes and N number of PUSCH transmission chance, if LBT in LBT UL subframes into Work(, then N number of continuous P USCH transmission start.If LBT succeeds once in LBT UL subframes, although LBT fails, PUSCH The quantity of transmission opportunity is equal to N.ENB can indicate LBT chances and PUSCH chances using identical control signal.
C) according to the instruction of N number of LBT UL subframes and M PUSCH transmission chance, LBT UL subframes and PUSCH transmission chance Operated (N, M are positive integers) based on one-to-one corresponding.In the case of at least one LBT failures, the number of PUSCH transmission chance Amount is equal to or less than M.ENB can individually indicate LBT chances and PUSCH chances using different message.
D) according to the instruction of N number of LBT UL subframes and M PUSCH transmission chance, if LBT in LBT UL subframes into Work(, then M continuous P USCH transmission start.If LBT succeeds once in LBT UL subframes, although LBT fails, PUSCH The quantity of transmission opportunity is equal to M.ENB can individually indicate LBT chances and PUSCH chances using different message.
E) according to the instruction of N number of LBT and PUSCH transmission UL subframe and M PUSCH transmission chance, if LBT is in LBT UL Success in subframe (that is, n-th of subframe), then M continuous P USCH transmission is since (n+1) UL subframe.
By permitting or passing through such as public DCI, public UL control information (UCI), RRC signaling, DL/UL sub-frame configurations The single control signal of (beginning/length) information etc. indicates N number of LBT UL subframes (that is, LBT chances).By permitting or leading to The single control signal of special UCI, RRC signaling etc. is crossed to indicate N number of or M PUSCH transmission chance.If LBT UL The quantity of subframe and the quantity of PUSCH transmission chance are equal to each other, then identical signal (perhaps can or RRC signaling) can once refer to Show the quantity of LBT UL subframes and the quantity of PUSCH transmission chance.
In embodiment, LBT UL subframes can be indicated as discontinuously being arranged with interval K therebetween.If K is 2, Then mean that UL subframe is arranged to [0,3,6 ...], if K is 1, mean UL subframe be arranged to [0,2,4, 6 ...], and if K is 0, then mean that UL subframe is arranged to [0,1,2,3,4,5,6 ...].License, public affairs can be passed through Altogether/special UCI or RRC signaling indicate K.In this case, the quantity M of PUSCH transmission chance is equal to N or N ×K。
In embodiment, eNB can send the index of one in the group of instruction LBT UL subframes.If for example, index For 0, it indicates that one group of UL subframe [0,1,2,6,7,8], if index is 1, it indicates that one group of UL subframe [Isosorbide-5-Nitrae, 7,9].In reality Apply in example, can be by the way that every group of UL subframe can be indicated by the bitmap that eNB is sent.For example, can by bitmap 0,1,0,0, 1,0,0,1,0,1 } one group of UL subframe [Isosorbide-5-Nitrae, 7,9] is indicated.
When receiving eNB license (or RRC signaling) of instruction LBT UL subframes, UE is determined wherein according to pre-defined rule Perform the UL subframe or PUSCH of transmission.The various embodiments of eNB license and explanations of the UE to it are described below.With In lower embodiment, the part that LBT can be UE LBT processes is performed in specific sub-frame.That is, UE is in specific sub-frame Start LBT processes before, and the remainder of LBT processes is performed in CCA the or ECCA periods of specific sub-frame.
In embodiment, the subframe after x subframe receiving the subframe of license from UE wherein is considered as LBT by UE The beginning of UL subframe.UE performs LBT in the subframe of instruction, and in the case of LBT is successful, in subsequent PUSCH transmission UL data are sent in resource.If for example, received in the n-th subframe license and (n+x) subframe include [CCA] [PUSCH] (here, [CCA] represents the CCA periods, and [PUSCH] represents the PUSCH periods), then UE is in (n+x) subframe CCA performs LBT in the period, if LBT successes, UE perform PUSCH transmission in the PUSCH periods of (n+x) subframe. In another example, if (n+x) subframe and (n+x+1) subframe include [PUSCH] [CCA], UE is in (n+x) subframe The CCA periods in perform and LBT and perform PUSCH transmission in the PUSCH periods of (n+x+1) subframe.
In embodiment, UE will be considered as PUSCH transmission chance by being permitted denotable subframe, i.e. UL PUSCH transmission subframes Beginning.UE performs LBT before indicated subframe, and UL numbers are sent in the PUSCH transmission resource of indicated subframe According to.For example, if the grant indicate that include [CCA] [PUSCH] (n+x) subframe, then CCA times of the UE in (n+x) subframe LBT is performed in section, and PUSCH transmission is performed in the PUSCH periods of (n+x) subframe if LBT successes.Another In example, if the grant indicate that (n+x) subframe and (n+x-1) subframe and (n+x) subframe include [PUSCH] [CCA], Then UE performs LBT in the CCA periods of (n+x-1) subframe and performed in the PUSCH periods of (n+x) subframe PUSCH transmission.
Distributed UL subframe resource can be indicated to express by one of various schemes for being provided below according to time standard UL license in UL subframe index (ULSI).
1) ULSI is expressed based on PCell subframe index.
2) ULSI is expressed based on the subframe index for the scheduling cell for carrying control channel.
3) ULSI is expressed based on the subframe index for the scheduling cell for carrying data.
4) ULSI is expressed based on the beginning subframe (DL subframe) of DL bursts (burst).
5) ULSI is expressed based on the beginning subframe (UL subframe) of UL bursts.
When it is determined that to use the UL subframe that unlicensed band is communicated, UE determines CWS and competition is performed since CWS Window (CW) countdown (countdown).
CW is typically to access the exponential backoff algorithm needed for the resource in unlicensed band.Transmitter is in the initial CCA times LBT is attempted in section, such as up to 20 μ s, and by the energy level measured in the initial CCA periods compared with CCA threshold values with true Determine LBT successes or failure.If the energy level (in units of dBm) of measurement is more than CCA threshold values, transmitter determines channel Occupied (busy)；Otherwise, transmitter determines that channel is empty (free time)., can be in the initial CCA periods if channel idle Transmission is immediately performed afterwards.If channel busy, transmitter is switched to ECCA processes.ECCA includes N number of CCA, and wherein N is Optional value in [1, q], and q is CWS values.In such a case, it is possible to depending on situation carrys out adjusting parameter q.Can be with Q scope is controlled between q minimum value (min_q) and q maximum (max_q).As original execution ECCA, min_ is used q.Parameter q value can be incremented by since min_q, for example, being based on twice according to specified conditions.For example, in WLAN (LAN) in system, if receiver does not send ACK, transmitter will be not received by ACK and be construed to NACK, and will be under The q used in one ECCA value is arranged to min_q × 2.Once receiving ACK from receiver, then transmitter will be next The q used in individual ECCA value is arranged to initial value min_q.Various types of back off algorithms can be used depending on system.It is right In cellular mobile communication, if for example, the HARQ ACK of the first DL subframe on the eNB DL bursts (continuous DL subframe) sent The 80% of feedback is NACK, then q value can increase by twice.
UE determines CWS from following either case and performs CW countdowns.
1) when in UE generate UL business, and therefore UL send request from high level reach physical layer when,
2) when sending request to eNB transmission SR in response to generating UL in UE,
3) when UE sends SR to eNB and receives UL licenses from eNB,
4) when UE sends BSR for the UL licenses from eNB,
5) when UE receives the ACK for BSR by PHICH.
More licenses (that is, the license on multiple subframes (more subframes)) and UE and eNB operation is described more fully below. More specifically, various embodiments are described below, with determine when UE receive permit when 1) when perform PUSCH transmission, 2) what Shi Zhihang LBT, 3) to send which HARQ procedure ID, and the 4) process in the case of LBT failures.
<Table 2>Show the IE fields being included in more licenses in accordance with an embodiment of the present disclosure.
[table 2]
In upper table, the numeral in [] is to be mapped to bit string to express the table of discrete value.For example, in [1,2,4,8], 1, which can be expressed as 00,2, can be expressed as 01,4 and can be expressed as 10,8 can be expressed as 11.
<Table 2>In, UL licenses can be included in more sub-frame assignments (MSA) length field and MSA trailer fields at least One.Can be by another control signal impliedly or clearly will not by the higher layer message of such as RRC signaling or SIB Comprising field signals to UE.MSA length fields can indicate a subframe, but if multiple subframes are allocated contiguously and do not had Have and use LBT in centre, then can also indicate that the quantity of unit group.If for example, for UE, by the basic scheduling of multiple subframes Unit is arranged to 2 subframes (for example, being set by RRC signaling or SIB message), when receiving therefrom n-th of UL licenses When the subframe of the 4th, 5,6 and 7 after subframe is assigned to UE, as two subframes of subframe [4,5] and subframe [6,7] are assigned to One unit group.In order to express these characteristics, MSA is started into field and is arranged to 0 and 1, and MSA length fields are arranged to 2. Also reached that is MSA starts field with the offset table based on unit group.According to embodiment, not yet explicitly setting unit group, and can Impliedly to determine a burst unit (DL and UL subframe or UL subframe).Below in an example, to the base of subframe distribution This unit illustrates for the situation of 1 subframe.
HARQ procedure field can be designated as the HARQ procedure ID or multiple HARQ mistake that distributed UL subframe is specified Journey ID.In order to specify multiple HARQ procedure ID for the UL subframe distributed, in embodiment, eNB is wrapped in HARQ procedure field Include a HARQ procedure ID, and the HARQ procedure ID that is indicated by HARQ procedure field of UE identifications and in indicated HARQ procedure At least one HARQ procedure ID of predetermined quantity after ID, and determine to use the HARQ procedure to the UL subframe distributed ID.The quantity of the HARQ procedure ID after the HARQ procedure ID of instruction can be determined based on MSA length fields.
For example, HARQ procedure field is arranged to HARQ procedure ID#3 by eNB.If MSA length fields are 3 and predetermined Elementary cell is 1, then UE determines to distribute HARQ procedure ID#3, #4 and #5 based on HARQ procedure field and MSA length fields. In another example, HARQ procedure field is arranged to HARQ procedure ID#3 by eNB.If MSA length fields are 3 and predetermined base This unit is 2, then UE determines to distribute HARQ procedure ID#3, #4, #5, #6, # based on HARQ procedure field and MSA length fields 7 and #8.
In embodiment, eNB distributes the continuous HARQ mistakes in addition to previously used (one or more) HARQ procedure ID Journey ID, and UE identifies newly assigned (one or more) in addition to previously used (one or more) HARQ procedure ID HARQ procedure ID.If for example, HARQ procedure field were arranged into HARQ procedure ID#3, MSA length field for 3, elementary cell For 1, if the UL that HARQ procedure ID#4 has been used between eNB and UE communicates, UE determination distribution HARQ procedures ID#3, #5 And #6.
[when performing PUSCH transmission]
UE receives UL licenses by PDCCH (or ePDCCH) from eNB, and by predefining or permitting to indicate according to by UL Timing information determine UL subframe PUSCH send UL data.UE, which is based on UL license determinations, will be used for UL data and physics letter The position of the resource of the transmission of road parameter (that is, configured transmission).
Fig. 9 is shown for the UL licenses in existing LTE system and the transmitting procedure of UL data.
With reference to figure 9, existing COT 902 includes four DL subframes and three UL subframes after ECCA.It is specific receiving Timing slip between the timing of UL licenses and the timing for sending UL data is fixed to 4ms.Therefore, in order to continuously will PUSCH 906a, 906b and 906c distribute to UL subframe #5, #6 and #7, and eNB sends UL licenses in DL subframe #1, #2 and #3 904a, 904b and 904c.For example, after receiving UL licenses 904a in subframe #1, UE is being permitted indicated resource by UL Opening position sends UL data by PUSCH 906a during subframe #5.
Figure 10 show in accordance with an embodiment of the present disclosure using timing slip UL license and UL data transmitting procedure.
With reference to figure 10, COT 1002 includes four DL subframes and three UL subframes.Do not make between UL licenses and UL data With fixed timing slip.ENB permits to set to UE between the timing for receiving the timing of UL licenses and sending UL data by UL Put skew.In the example shown, UL licenses include multiple skews, for example, [4,5,6] individual Transmission Time Interval (TTI) or [0,1, 2] individual TTI, and based on the timing for receiving UL licenses, with application, these offset to specify allocated PUSCH UL subframe UE.TTI It can be configured to the 1ms for example as 1 subframe lengths.Here, show that a UL license includes being used for multiple PUSCH biographies Multiple skews of defeated chance, but in a modified embodiment, can be sent respectively in a DL subframe is included for N number of N number of UL licenses of the skew of PUSCH transmission chance.In the other embodiment being described below, in order to indicate multiple PUSCH transmissions Chance, a UL license or multiple UL licenses can be sent.
In embodiment, if the beginning timing of the UL subframe of distribution is fixed (for example, from receiving what UL permitted Timing is risen after 4ms), then the information of the timing on can be omitted since transmission.In embodiment, eNB can for UE UL licenses include multiple MSA length fields and the MSA with MSA length fields as many starts field.
Figure 11 shows the UL licenses for being used to indicate the beginning and end of continuous UL subframe in accordance with an embodiment of the present disclosure With the transmitting procedure of UL data.
With reference to figure 11, COT 1102 includes five DL subframes and three UL subframes.ENB permits 1104 by using a UL To indicate to be assigned with PUSCH continuous UL subframe (that is, subframe #5, #6 and #7) 1106a, 1106b and 1106c beginning and end Or beginning and length.
In another embodiment, UL licenses 1104 can be including at least one in following IE combination.
A) the specific Kai Shixinxi ＆UE of UE are specific terminates (length) information,
B) the specific public end of start information ＆ (length) information of UE,
C) specific end (length) information of public Kai Shixinxi ＆UE, and
D) the public public end of start information ＆ (length) information.
Here, UE customizing messages is applied to particular UE, and public information is applied to receive UL licenses 1104, public DCI or higher layer message any UE.In another embodiment, beginning and end (length) information of continuous UL subframe can be by It is dispatched to UE groups.
Figure 12 shows UL licenses and the UL of the beginning and end of the continuous UL subframe of instruction in accordance with an embodiment of the present disclosure The transmitting procedure of data.
With reference to figure 12, in the subframe #0 in COT 1202, eNB, which is sent, to be included indicating that the continuous of PUSCH is being assigned Terminate the UL license 1204a of subframe (that is, subframe #7) 1206c end (or beginning) information in UL subframe, and subsequent In subframe #1, the UL licenses of beginning (or the end or length) information for including indicating the first subframe (that is, subframe #5) are sent 1204b.UE permits 1204a to prepare UL data transfers by receiving UL, and permits 1204b to be used for specify by receiving UL Transmit UL subframe 1206a, 1206b and 1206c of UL data.In another embodiment, UE permits 1204a to determine to tie based on UL The position of beam UL subframe, and specified while UL data transfers are prepared based on UL licenses 1204b for transmitting UL data UL subframe 1206a, 1206b and 1206c.
In various embodiments, i) license, an ii can be used) two licenses respectively or iii) license and One physical layer (layer 1, L1) signal (for example, PDCCH public/special DCI) come notify instruction be used for use unlicensed band Transmit the start information and end (length) information of the continuous UL subframe of UL data.In various embodiments, (length) letter is terminated Breath can i) start timing determination, ii based on start information) start what is determined based on DL bursts (continuous DL subframe), Iii) start what is determined based on UL bursts (continuous UL subframe), iv) based on subframe (that is, the special son for DL-UL switchings occur Frame) determine, v) based on sending the timing determination that starts or terminate (length) information, vi) PCell subframe index, or Vii) SCell subframe index.Beginning and end (length) information can by combine in above-described embodiment it is at least one come Expression.
Figure 13 and Figure 16 shows the beginning for being used to semi-statically indicate continuous UL subframe in accordance with an embodiment of the present disclosure With the UL licenses and the transmitting procedure of UL data for terminating (length).
With reference to figure 13, in COT 1302 subframe #1, eNB is dynamically notified on being divided by UL licenses 1304 to UE PUSCH continuous UL subframe 1308a, 1308b, 1308c start information are matched somebody with somebody.Such as can be by RRC signaling to each UE Be semi-statically configured continuous UL subframe 1308a, 1308b and 1308c end (length) 1308.UE be based on RRC signaling and UL licenses 1304 specify UL subframe 1308a, 1308b and 1308c to be used to pass through the PUSCH transmission UL data in unlicensed band.
In embodiment, UL licenses 1304 or common control signal/message can include one of following IE combination.
A) the specific Kai Shixinxi ＆UE of UE are specific terminates (length) information,
B) the specific public end of start information ＆ (length) information of UE,
C) specific end (length) information of public Kai Shixinxi ＆UE, and
D) the public public end of start information ＆ (length) information.
Here, UE customizing messages is applied to have been received by the particular UE (that is, the UE of scheduling) of UL licenses, and public Information is applied to receive any UE of UL licenses 1304 or common control signal/message.In another embodiment, continuously Beginning and end (length) information of UL subframe can be assigned to UE groups.
In various embodiments, can use i) license, ii) L1 signals (for example, PDCCH public/special DCI) or Iii) media access control (MAC) control element (CE) notifies wherein to send the continuous of UL data using unlicensed band The start information of UL subframe.In various embodiments, i) MAC CE, ii can be used) RRC signaling, iii) data field high level Control signal or iv) SIB of broadcast channel (BCH) notifies the ending message of continuous UL subframe.
In various embodiments, can be based on i) sending timing, the ii of license) PCell timing or iii) SCell DL bursts (continuous DL subframe) start to determine start information.
In various embodiments, it can be i to terminate (length) information) based on timing determination being indicated by start information , ii) based on DL bursts (continuous DL subframe) start what is determined, iii) start to determine based on UL bursts (continuous UL subframe) , iv) determined based on the subframe for DL-UL switchings occur, or v) based on the timing determination for sending start information.Beginning and end (length) information at least one can be expressed by combine in above-described embodiment.
With reference to the example of figure 14, the UL licenses 1404 sent in COT 1402 subframe #1 are included on being assigned PUSCH continuous UL subframe 1410a, 1410b and 1410c start information.By public L1 signals 1406 (for example, PDCCH Public DCI or SIB) and it is the beginning (length) 1408 that UE sets continuous UL subframe 1410a, 1410b and 1410c jointly.UE connects Public L1 signals 1406 and UL license 1404 is received, and specifies UL subframe 1410a, 1410b and 1410c to be used to pass through unauthorized frequency PUSCH transmission UL data in band.
With reference to the example of figure 15, pass through the end DL subframe in the public L1 signals 1506 of UE, such as instruction COT 1502 Public DCI indicate on continuous UL subframe 1510a, 1510b, 1510c that PUSCH is assigned start information, and lead to Cross the length 1508 that RRC signaling sets continuous subframes 1510a, 1510b and 1510c for each UE.UE receives public L1 signals 1506 and RRC signaling, and specify UL subframe 1510a, 1510b and 1510c to be used to pass through the PUSCH transmission UL in unlicensed band Data.
In this case, the UL licenses 1504 sent in the subframe #1 in COT 1502 include being used for continuous UL subframe The configured transmission (for example, MCS indexes, HARQ procedure ID etc.) of 1510a, 1510b and 1510c UL data.UE is based on by public The first UL subframe (that is, subframe #5) after the end DL subframe (that is, subframe #4) of DCI instructions, RRC signaling is passed through by application Given UE length-specifics information permits that 1504 is logical to configure to specify UL subframe 1510a, 1510b and 1510c based on UL Cross the UL data of UL subframe 1510a, 1510b and 1510c transmission.
With reference to the example of figure 16, by public UE L1 signals 1606 (such as the end DL subframe in instruction COT 1602 Public DCI) instruction on continuous UL subframe 1610a, 1610b, 1610c that PUSCH is assigned start information, and leads to Cross the length 1608 that L1 signals or SIB set continuous subframes 1610a, 1610b and 1610c jointly.
Similar to Figure 15 example, the UL licenses 1604 that are sent in subframe #1 include for continuous UL subframe 1610a, The configured transmission (for example, MCS indexes, HARQ procedure ID etc.) of 1610b and 1610c UL data.UE is based on being indicated by public DCI End DL subframe (that is, subframe #4) after the first UL subframe (that is, subframe #5) given by application by L1 signals or SIB Common length information specify UL subframe 1610a, 1610b and 1610c, and configured by UL based on UL licenses 1604 The UL data that frame 1610a, 1610b and 1610c are sent.
In embodiment, common length information is given by L1 signals or SIB, but can be based on indicating DL and UL subframe Quantity (that is, DL and the total length of UL bursts) or UL subframe the quantity length of burst (that is, UL) COT 1602 it is true It is fixed.If for example, the UL length to happen suddenly is given as into 3, UE can determine that three subframes since the first UL subframe are i.e. sub Frame #5, #6 and #7 are as the transfer resource that UL data are sent wherein in unlicensed band.
In embodiment, eNB semi-statically notifies UE on will start letter using the continuous UL subframe of unlicensed band Breath and end (length) information.UE sends UL data during the UL subframe notified by unlicensed band.
In various embodiments, beginning and end (length) information can configure as follows：
A) the specific Kai Shixinxi ＆UE of UE are specific terminates (length) information,
B) the specific public end of start information ＆ (length) information of UE,
C) specific end (length) information of public Kai Shixinxi ＆UE, or
D) the public public end of start information ＆ (length) information.
Here, UE customizing messages is applied to particular UE, and public information is applied to receive beginning and end (length Degree) information any UE.In another embodiment, beginning and end (length) information can be sent to UE components.
In various embodiments, i) MAC CE, ii can be used) RRC signaling, iii) data field high-rise control signal, Or iv) BCH SIB come notify start information or terminate (length) information.
In various embodiments, can be based on i) sending timing, the ii of the control signal of instruction start information) PCell Regularly or iii) SCell DL bursts (continuous DL subframe) start to determine start information.
In various embodiments, it can be i to terminate (length) information) based on timing determination being indicated by start information , ii) based on DL bursts (continuous DL subframe) start what is determined, iii) start to determine based on UL bursts (continuous UL subframe) , iv) determined based on the subframe for DL-UL switchings occur, or v) based on the timing determination for sending start information.Beginning and end (length) information at least one can be expressed by combine in above-described embodiment.
[when performing LBT]
In eNB by the way that before being permitted the transmission UL data of the PUSCH in denotable multiple UL subframes by UL, UE has to carry out LBT and successfully.The various embodiments for determining the timing (hereinafter referred to as LBT timings) for performing LBT are described below.Depend on CCA structure, CCA periods may be at wherein sending the beginning of the first subframe of UL data (that is, during PUSCH Between section beginning), or the latter end for the subframe that may be at immediately can wherein sending before the subframe of UL data.
In embodiment, UE performs LBT before the UL subframe of each distribution.Permitted for example, UE receives UL in the n-th subframe Can, and receive the instruction from (n+m) subframe to the PUSCH transmission of (n+m+3) subframe for permitting by UL.Then, UE performs LBT in the CCA periods before immediately each PUSCH transmission subframe.For example, UE can be positioned at (n+m-1) LBT is performed in the CCA periods in a part for subframe to determine the transmission in (n+m) subframe.If UE LBT successes, Then allow to carry out UL data transfers in a UL subframe.Next, UE recovers for transmission in next UL subframe LBT。
In embodiment, if LBT successes are once, UE can perform the biography without LBT during N number of continuous UL subframe It is defeated.That is, perform a LBT every N sub-frames in the UL subframe of distribution.Value N by eNB by MAC CE, RRC signaling or Higher layer message is semi-statically indicated to UE.UE determines to have cycle N LBT timings based at least one in following standard：
A) timing of UL licenses is received,
B) the beginning timing of UL bursts,
C) the beginning timing of DL bursts, and
D) the beginning timing of PCell frame.
In embodiment, eNB can send the dynamic control signal that instruction wherein has to carry out LBT UL subframe.Dynamically Control signal can be at least one in such as UL licenses and public/special L1 signalings.Can be based on predetermined reference timing To determine wherein to have to carry out the configured information of LBT UL subframe.With reference to timing can be for example when receive including instruction believe What the timing of UL licenses of breath, the timing for receiving the L1 signalings including configured information, the beginning timing of UL bursts, DL happened suddenly opens Beginning timing and the beginning of PCell frames timing.UE is by using the following configured information included in dynamic control signal, base In with reference to timing or from reference to timing presumption the first LBT timing come determine LBT timing.
In various embodiments, configured information can be configured as follows：
A) quantity of the UL subframe of UL data can be wherein continuously transmitted in the case where not performing LBT,
B) LBT period (can be expressed as number of sub frames) is wherein performed,
C) instruction wherein has to carry out the information of LBT (one or more) subframe and instruction does not perform (the one of LBT wherein It is individual or multiple) information (for example, it may be subframe index or bitmap) of subframe, and
D) position (for example, it may be subframe index or skew) of LBT next subframe is wherein had to carry out.
[which HARQ procedure ID sent]
The related at least one UL of multiple UL subframes to can be used for sending UL data in unlicensed band, which permits, is On the configured transmission of multiple UL subframes, and including frequency resource allocation information, MCS indexes and HARQ relevant informations.Here, HARQ relevant informations can include the HARQ procedure ID and RV for each UL subframe distribution.M-UL licenses or higher layer message can be passed through (for example, RRC signaling) come notify except existing UL permit in indicate distribution subframe information in addition to related transmitting information in It is at least one.When using higher layer message, UE can be allowed to reuse identical in the given time or in periodic location Resource allocation and HARQ information specific times.However, when completing the transmission using HARQ procedure ID, it is necessary to predetermined time Sequence uses next HARQ procedure ID.According to embodiment, when using M-UL licenses, eNB can be by using the earliest of arrival DL bursts or earliest end DL subframe as a reference to indicating (one or more) subframe for PUSCH transmission.According to Another embodiment, if by M-UL license specify HARQ procedure ID UL subframe position with it is perhaps denotable by M-UL Position is different, then needs to rewrite previous temporal information.
Figure 17 to Figure 21 is shown according to the HARQ procedure ID that the embodiment of the present disclosure is the setting of multiple subframes.
With reference to figure 17, eNB is distributed identical by using (one or more) UL licenses (1704) for multiple UL subframes 1702 HARQ procedure ID (#3 of examples shown), fixed in multiple 1702 periods of UL subframe HARQ procedure ID.UE will apply HARQ The resource location of process ID is construed to fixed, and in the case of LBT failures, has no chance to reattempt to LBT.Illustrating Example in, if during the CCA periods before immediately the first UL subframe (i.e. subframe #5) UE LBT success (1706), Then UE sends UL data by using HARQ procedure ID#3 during subframe #5.If UE is directed to the UL subframe of all distribution (i.e. Subframe #5, #6 and #7) LBT failure (1708), then UE there is no the transmission opportunity of UL data.If UE is for the first two UL subframe The LBT of (that is, subframe #5 and #6) fails and the LBT for terminating UL subframe (that is, subframe #7) is successful (1710), then UE is in son UL data are sent in frame #7.In embodiment, after on subframe #5 LBT successes, UE is sent out by the resource of additional allocation Identical data are sent to be transmitted without completing, so as to which application improves the HARQ TTI bindings of eNB receptivity.
With reference to figure 18, eNB is distributed identical by using (one or more) UL licenses (1806) for multiple UL subframes 1802 HARQ procedure ID (#3 in examples shown), but HARQ procedure ID is not fixed only for multiple UL subframes 1802. In the case of LBT failures, UE can reattempt to LBT for the resource of subsequent subframe.
If even if UE only succeeds once (1808) in the UL subframe 1802 of multiple distribution, ULs of the UE in multiple distribution Additional transmitted is not performed in subframe 1802.If UE is failed in all LBT of the UL subframe 1802 for multiple distribution (1810), and eNB notifies extension UL subframe 1804 to UE in advance, then UE can be directed at least one in extension UL subframe 1804 It is individual to reattempt to LBT.For example, if the maximum allowable length of DL and UL bursts is 8ms, and DL and the UL burst distributed is 6ms, then allow additional 2ms as extension UL subframe 1804.Therefore, eNB is notified by using L1 signals or RRC signaling to UE The COT used in current burst or special time period maximum allowable length.
In embodiment, UE can use extension UL subframe conduct after the maximum allowable length 8ms that DL and UL happens suddenly Independent UL bursts.In order to access the resource for single UL bursts, UE can use LTE classifications 4 rather than LTE classification 2 In LBT.
If all LBTs failures (1810) of the UE in the UL subframe 1802 distributed, UE are based on maximum allowable length To determine whether there is at least one extension UL subframe 1804.If there is it is at least one extension UL subframe 1804, then UE for Extension UL subframe 1804 reattempts to LBT.
If the LBT failures for the UL subframe (that is, subframe #5, #6) that UE distributes for the first two, and for terminating UL The LBT of frame (that is, subframe #7) is successful (1812), then UE sends UL data in subframe #7, and without using extension UL subframe 1804。
With reference to figure 19, eNB is that multiple UL subframes 1902 assign multiple different HARQ procedure ID (#3, #4 and #5) (1904).The resource location for applying HARQ procedure ID is construed to fixation by UE, and without weight in the case of LBT failures The chance of new try.In the example shown in the series of figures, if CCA period phases of the UE before immediately the first UL subframe (i.e. subframe #5) Between LBT successes (1906), then UE UL data are sent during subframe #5 by using HARQ procedure ID#3, but in subsequent son LBT fails in frame #6 and #7, therefore can not send other HARQ procedures ID#4 and #5.If UE is for the UL subframe of all distribution (i.e. subframe #5, #6 and #7) LBT fails (1908), then UE does not have the transmission opportunity of HARQ procedure ID#3, #4 and #5 UL data. If UE fails for the first two UL subframe (that is, subframe #5, #6) LBT, and for terminating UL subframe (that is, subframe #7) LBT Succeed (1910), then UE sends HARQ procedure ID#5 UL data, and HARQ procedure ID#3 and #4 UL numbers in subframe #7 According to transmission be abandoned.
With reference to figure 20, eNB is distributed multiple by using (one or more) UL licenses (2006) for multiple UL subframes 2002 Different HARQ procedure ID (#3, #4, #5 in examples shown), but HARQ procedure ID is not only for multiple UL subframes 2002 Fixed.In the case of LBT failures, UE can reattempt to LBT for the resource of subsequent subframe.Reattempted to LBT In the case of, UE is HARQ procedure ID using UL licenses for the UL data on previous UL subframe LBT failures.If LBT into Work(, then UE permit that by using the UL for follow-up next UL data i.e. HARQ procedure ID sends UL data.At multiple points Aforesaid operations are performed in the UL subframe 2002 matched somebody with somebody, or UL subframe can be extended in (one or more) distributed in addition by eNB Aforesaid operations are performed during 2004.
Once LBT is successful (2008) in the first UL subframe (that is, subframe #5) of distribution, then UE is sent in subframe #5 HARQ procedure ID#3 UL data.If attempting failure for the LBT of next UL subframe (that is, subframe #6), then UE tastes again LBT is tried to send HARQ procedure ID#4 UL data in next UL subframe (that is, subframe #7).If for UL subframe (i.e. Subframe #6, #7) all LBT failures, then UE reattempt to LBT for subsequent first extension UL subframe 2004, and if LBT successes, then UE sends UL data by using HARQ procedure ID#4.Similarly, UE is in the second extension UL subframe 2004 LBT successes, and UL data are sent by using HARQ procedure ID#5.
If failed (2010) for all LBT of UL subframe (that is, subframe #5, #6, #7) distributed, then UE for The first extension UL subframe (that is, subframe #5) 2004 afterwards reattempts to LBT, and if LBT successes, then UE sends HARQ procedure ID#3 UL data.Next, LBT successes of the UE for the second extension UL subframe (that is, subframe #6) 2004, and by using Subframe #6 HARQ procedure ID#4 sends UL data.There is no the UL subframe of extension, so UE does not have to HARQ procedure ID#5 Transmission opportunity.
Due to all LBT failures (2012) of the first and second UL subframes (that is, subframe #5, #6) for distribution, and for End UL subframe (that is, subframe #7) LBT successes distributed, then UE can send HARQ procedure ID#3 UL data.Due to depositing In still untapped HARQ procedure ID, so UE is attempted for the subsequent first LBT for extending UL subframe 2004, and if LBT successes, then UE sends UL data by using HARQ procedure ID#4.Next, UE is for the second extension UL subframe 2004LBT successes, and UL data are sent by using HARQ procedure ID#5.
As shown in figure 20, if UE is by using the different HARQ of HARQ procedure ID from being indicated in specific sub-frame by eNB Process ID sends UL data, i.e., the HARQ procedure ID that can not be sent in previous subframe due to LBT failures, then eNB needs Identify the HARQ procedure ID changed in corresponding subframe.For example, UE changes the cyclic shift of DMRS sequences according to the rule of determination, and UL data are sent by using the cyclic shift of change.ENB detects the cyclic shift changed according to the rule of determination and connect simultaneously UL data are received, and UE unsuccessfully how many times, or divide in UL licenses in LBT can be known from the cyclic shift detected How many HARQ procedure ID is abandoned in the HARQ procedure ID matched somebody with somebody.If UE obtains UL resources and sends UL data, eNB can To receive UL data by using with the HARQ procedure ID of the same order with being distributed in permitting in UL.
With reference to figure 21, eNB is distributed multiple by using (one or more) UL licenses (2106) for multiple UL subframes 2102 Different HARQ procedure ID (#3, #4, #5 of diagram), but HARQ procedure ID is fixed for multiple UL subframes 2102. In the case of LBT failures, UE can reattempt to LBT for the resource of subsequent subframe.In the case of LBT failures, UE will not The UL data for transmitting identical HARQ procedure ID are reattempted in following resource.If LBT successes, UE is according to for next HARQ procedure ID UL licenses send UL data.Aforesaid operations perform in the subframe 2102 of multiple distribution, or can by Performed during (one or more) extension UL subframe 2104 that eNB is distributed in addition.UE can be in UL subframe 2104 be extended in LBT Transmission UL data are reattempted in the HARQ procedure ID of the foremost of failure.Here, the HARQ procedure ID of foremost refers to work as HARQ procedure ID by the subframe index that HARQ procedure ID is distributed in permitting in UL sequential arrangement when minimum value or with HARQ Process ID is the minimum value of order.
Once LBT is successful (2108) in the first UL subframe (that is, subframe #5) on distribution, then UE is sent out in subframe #5 Send HARQ procedure ID#3 UL data.If attempting to fail for next UL subframe (that is, subframe #6) LBT, then HARQ is abandoned The transmission of process ID #4 UL data, and UE reattempts to LBT to send HARQ in next UL subframe (that is, subframe #7) Process ID #5 UL data.If all LBT failures of UL subframe (i.e. subframe #6 and #7), UE is for the first subsequent extension UL subframe 2104 reattempts to LBT, and if LBT successes, then UE in the first extension UL subframe 2104 by using for The HARQ procedure ID (i.e. #4) of the foremost of its bust this sends UL data.Similarly, UE extends UL subframe 2104 second Middle LBT successes, and UL data are sent by using HARQ procedure ID#5.
If for all LBT failures (2110) of UL subframe (i.e. subframe #5, #6 and #7) of distribution, UE is for follow-up First extension UL subframe 2104 reattempts to LBT, and if LBT successes, then UE is sent in the first extension UL subframe 2104 For the HARQ procedure ID (that is, #3) of the foremost of its bust this UL data.Next, UE extends UL subframe second LBT successes in 2104, and bust this, then send next HARQ procedure ID in the second extension UL subframe 2104 The UL data of (that is, #4).Due to extension UL subframe no longer be present, so UE does not have transmission opportunity for HARQ procedure ID#5.
Due to all LBT failures in the first and second UL subframes (that is, subframe #5 and #6) (2112) of distribution in institute LBT successes in the end UL subframe (that is, subframe #7) of distribution, so UE can send HARQ procedure ID#5 UL data.Due to In the presence of still untapped HARQ procedure ID, so UE attempts LBT for the first subsequent extension UL subframe 2104, and if LBT successes, then UE sends UL data by using HARQ procedure ID#3.Next, UE is for the second extension UL subframe 2104LBT successes, and UL data are sent by using HARQ procedure ID#4.
As shown in figure 21, if UE specifically extension UL subframe in for as the HARQ procedure ID indicated by eNB not With HARQ procedure ID send UL data, i.e., the HARQ procedure ID not sent in the UL subframe of allocation, then eNB need The HARQ procedure ID of change in extension UL subframe corresponding to identification.For example, eNB passes through in (one or more) non-expanding UL In frame the weight of UL data is received using the HARQ procedure ID of foremost in (one or more) the HARQ procedure ID of bust this Pass.
Figure 22 is to show the flow for being used to perform the eNB of multiframe resource allocation operation in accordance with an embodiment of the present disclosure Figure.
With reference to figure 22, in operation 2205, eNB determines whether that UE distributes the resource of multiple subframes (or frame), to support UL transmission in unlicensed band.If it is determined that distributing the resource of multiple subframes, then eNB generation instructions in operation 2210 are used In the assignment of resources signal of the resource allocation of the resource of multiple subframes.On the other hand, if it is determined that multiple subframes need not be distributed Resource, then operation 2225 in, eNB generation instruction for single subframe resource resource allocation assignment of resources signal. In operation 2215, eNB is permitted by least one UL or other control signals send assignment of resources signal to UE.It can pass through At least one in above-mentioned embodiment performs the transmission of assignment of resources signal.ENB can also be permitted by UL or other controls Signal processed uses unlicensed band to send the additional information needed for UL data to send UE, for example, start information and/or end (length) information and configured transmission.In operation 2220, eNB is in (one or more) subframe based on transmitted information assignment Period, UL data are received from UE by unlicensed band.
Figure 23 is to show the flow chart for being used to receive the UE of multiframe resource allocation operation in accordance with an embodiment of the present disclosure.
With reference to figure 23, in operation 2305, UE is permitted by UL or other control signals receive assignment of resources from eNB and believed Number.In operation 2310, UE determines whether to have been allocated for multiple subframes based on the signal received.If have been allocated for Multiple subframes, then in operation 2315, UE determines multiple subframes of distribution based on assignment of resources signal and other control signals Resource location.On the other hand, if multiple subframes are not yet allocated, in operation 2325, UE is based on receiving resource point The timing or other control signals for sending signal identify the resource location of the single subframe of distribution.Can be by above-described embodiment At least one execution resource location identification.In operation 2320, UE is in (one or more based on the signal distribution received It is individual) UL data are sent to eNB by unlicensed band during subframe.
[block ACK]
Depending on which of UE PCell that will be used and SCell come send on RS ChannelMeasurementReport DETAILED or Person sends to feed back on the ACK/NACK of data transfer, it is understood that there may be various situations as shown in table 3.
[table 3]
ChannelMeasurementReport DETAILED ACK/NACK feeds back
Situation I-1 PCell PCell
Situation I-2 PCell SCell
Situation II-1 SCell PCell
Situation II-2 SCell SCell
Can be one frequency band of a setting in DL and UL so that one if configuring LAA systems with fdd mode As under situation, substantially DL sets a shared frequency band., it is necessary to be another shared frequency that UL is set in fdd mode Band, it is therefore desirable to which the operation that radio resource accesses simultaneously is carried out at least two shared frequency bands.That is, UE must be two Operated in individual or more shared frequency band.The operation of CA or hybrid network in current LTE standard, for multiple shared frequencies For band, it is not easy to support LBT.Therefore, in order to avoid this complicated operation, UE can pass through existing PCell execution pair UL radio resource accesses.
If configuring LAA systems with tdd mode, both DL and UL can be arranged in a frequency band, and therefore UE can send ChannelMeasurementReport DETAILED or the ACK/NACK feedback for DL subframe in the UL sub-frame.However, compare DL due to setting The few UL subframe of subframe, if so UE obtains UL resource failure, UL transmission is delayed to after several subframes.Therefore, UE can leave UL subframe for the reserved letter of empty or transmission after LBT successes before the scheduled time from next DL subframe Number.As such, when without using UL subframe, UE can perform UL transmission in PCell.
In order to support the resource allocation for multiple subframes (or frame), one of following two feedback procedures can be used.
1) feedback of the data receiver on single resource can be sent by having been received by the UE of multiframe assignment of resources signal.
2) have been received by the UE of multiframe assignment of resources signal can send it is anti-on the block of the data receiver of multiple resources Feedback, i.e. block ACK.
In view of being success or failure according to eNB in resource occupation without being consecutively carried out the feelings sent and received Condition, feedback must not only indicated number be according to the success or failure in reception, but also including on the resource (subframe in multiple resources Or HARQ procedure) in ACK/NACK information.ENB stores the information on LBT success or failures in previous subframe, and It is determined that whether actual data transfer is corresponded to suitably to control the retransmission operation on UE by the ACK/NACK of UE reports.
[frequency reuse]
In the case of FBE, synchronous eNB may can frequency of use reuse (reuse -1 specified in LTE) enter Row signal transmits.LTE reuse -1 means all adjacent eNB by using identical frequency channels to maximize frequency spectrum effect Rate.It is used for the CCA periods for performing LBT in identical timing configured so that UE can not send the timing of signal in adjacent eNB From service eNB reception signals.Therefore, if frequency channels are empty due to LBT, eNB performs biography simultaneously in frequency channels It is defeated.
However, in the case of LBE, eNB uses the backoff counter (back-off counter) being randomly provided, so as to LBT is performed in different timings.Therefore, if adjacent eNB just sends signal in certain frequency channel, eNB can be with Transmission is not performed, and may can perform ECCA after frequency channels are changed into sky.Even if belong to identical public land The eNB of the Mobile Network Operator of mobile network (PLMN) is synchronized with each other, but if above mentioned problem does not solve, then may not It may use and reuse -1.
Therefore, eNB signal can be configured so that UE can distinguish the letter for the eNB for belonging to identical Mobile Network Operator Number.In embodiment, the successful eNB of LBT can include cell ID and PLMN ID in the transmission signal.In order to by cell ID and PLMN ID are included in the transmission signal, and the transmission signal from eNB needs to include at least 67 μ s (microsecond) OFDM Or single-carrier frequency division multiple access (SC-FDMA) symbol (OFDM).Therefore, even if being configured with most short possible signal, eNB signal Than most short 20 μ s CCA time segment lengths.
In order to solve this problem, transmitter (eNB or UE) by the channel strength value received in the CCA periods or Received power value stores in memory, while attempts to receive the signal from adjacent eNB.If receive from least one The signal of adjacent eNB, then transmitter calculate reception signal performance number, and from it is previously stored, used in during the CCA periods Removed in received power value or previously stored received power value that the channel strength value received calculates from least one adjacent The performance number sum that eNB is received.By this way, transmitter calculates according to the result as LBT during multiple CCA periods Received power value readjust backoff counter.Can be during predetermined amount of time to the receiving power from adjacent eNB Value and be averaged.The received power value averagely and for adjustment calculated in the subsequent CCA periods of received power value. Once being changed into 0 by operation, backoff counter as repetition, then transmitter can send signal.
- 1 is reused without separating the signal received from adjacent eNB in order to realize, can be executed as described below network Control.
Multiple eNB are arranged to one group by mobility management entity (MME) or control server in carrier network.eNB Information is exchanged with other eNB in same group by MME or control server or X2 interface.
The embodiment for supporting the frequency reuse in the communication using unlicensed band is described below.
1) MME or control server randomly determine the value n of backoff counter in the scope of [0, N] for specific eNB groups. The value n of backoff counter can also be determined by the representative eNB in the representative eNB or multiple eNB groups in eNB groups.It is described Multiple eNB or multiple eNB groups can be located at same place or different location.
2) MME or control server notify the value n of backoff counter to other (k-1) individual eNB in same group.So Other eNB determine to be used for LBT using the value n of backoff counter.The value n of backoff counter can also be by eNB groups or eNB groups Representative eNB set to other (k-1) individual eNB.
3) each eNB performs LBT based on backoff counter in the ECCA periods, if channel is empty (free time), subtracts Small backoff counter.
4) eNB for recognizing channel occupied during the ECCA periods (busy) stores current backoff counter and freezed LBT is operated, and then the representative eNB into MME, control server or (one or more) eNB groups reports freezing for LBT.It is right The report that LBT freezes can include the storage value of backoff counter.
5-1) in k eNB for forming eNB groups, it is determined that being idle until backoff counter is changed into 0 all LBT results ENB performs DL and transmits and return to 1) again.Generations of the eNB of executed DL transmission into MME, control server or eNB groups Table eNB reports that the eNB has been carried out DL transmission.
If 5-2) all k eNB report that LBT freezes in the ECCA periods, in MME, control server or eNB groups Representative eNB eNB reports that eNB groups are subordinated to k eNB instruction retreat count in minimum backoff counter value with Other eNB backoff counter value is readjusted as minimum backoff counter value.It is commanded and readjusts backoff counter value Each eNB carry out 3) to recover LBT.
[more UL licenses and data transmission procedure]
Figure 24 is to show the process for being used to transmit multiple UL (M-UL) licenses and data in accordance with an embodiment of the present disclosure Flow chart.
With reference to figure 24, in operation 2405, eNB sends M-UL licenses, for can be led to UE distribution by unlicensed band Multiple UL subframe #1, #2, #3 and #4 of letter.Immediately before UL subframe #1, UE performs LBT and success 2410 to CCA or ECCA, and And UL data #1 and #2 are sent during UL subframe #1 and #2.If the elementary cell of more subframe schedulings is arranged into 2 subframes, Then UE performs the LBT2415 for CCA or ECCA again before UL subframe #3, and if LBT successes, then in UL UL data #3 and #4 are sent during frame #3 and #4.In operation 2420, eNB sends UL data #1, #2, #3 and #4 for reception Block ACK/NACK.Block ACK/NACK indicates reception success/failure on UL data #1, #2, #3 and #4.
In operation 2425, eNB sends M-UL licenses, for that can pass through the UL of unlicensed band communication to UE distribution is multiple Subframe #1, #2, #3 and #4.Before UL subframe #1, UE attempts the LBT 2435 for CCA or ECCA, but LBT fails. Then, UE waits in the case where not performing transmission during UL subframe #1 and #2.If attempted before UL subframe #3 For CCA or ECCA LBT and LBT success 2435, then UE UL data #3 and #4 are sent during UL subframe #3 and #4, and From eNB receiving blocks ACK/NACK 2440.Meanwhile if ACK/NACK is sent to PCell rather than SCell, using existing ACK/NACK feedback procedures.
Figure 25 is the flow chart for the operation for showing the eNB for transmission block ACK/NACK in accordance with an embodiment of the present disclosure.
With reference to figure 25, in operation 2505, eNB is that UE generates M-UL licenses, and M-UL licenses are sent in operation 2510. In operation 2515, eNB receives the UL data permitted by M-UL in assignable resource location, and is determined in operation 2520 Whether eNB is properly received UL data.If being successfully received UL data, eNB stores UL data in operation 2525 The existence or non-existence of mistake, and enter operation 2530.In operation 2530, it is wrong that eNB sends instruction based on subframe to UE Present or absent piece of ACK/NACK by mistake.
Meanwhile if UL data or storage the depositing on mistake in operation 2525 are not received by operation 2520 Or the information that is not present after, eNB determines whether that there are still (one or more) UL subframe of distribution in operation 2535. If there is (one or more) UL subframe more distributed, eNB is moved to the position of next distribution in operation 2540, And enter operation 2515.
Figure 26 is the flow chart for the operation for showing the UE for transmission block ACK/NACK in accordance with an embodiment of the present disclosure.
With reference to figure 26, in operation 2605, UE receives M-UL and permitted, and by using M-UL licenses and if desired Other control signals identify the UL subframe of distribution.UE attempts to be used for before the UL subframe in operation 2610 immediately in distribution CCA or ECCA LBT, and determine whether UE LBT succeeds in operation 2615.If LBT successes, UE is in operation 2620 In at least one subsequent UL sub-frame during send UL data, and enter operation 2625.On the other hand, if LBT fails, UE is directly entered operation 2625.
UE determines whether to be provided with next CCA in operation 2625, and if being not provided with next CCA, then UE enters Enter operation 2635 to receive the block ACK/NACK for transmitted UL data.On the other hand, if being provided with next CCA, Then UE is moved to the period for next CCA in operation 2630, and carries out operation 2610.
[scheduling of concealed nodes]
Figure 27 is the view for describing the hidden node problem of the Wi-Fi network according to the embodiment of the present disclosure.
With reference to figure 27, when UE 2704 is from 2702 reception signals of eNB, UE 2704 is also possible to can not in possibly of UE 2704 The opening position of the signal from eNB 2702 is sensed from the reception signals of Wi-Fi AP 2706, and from AP 2706 signal Serve as the interference to desired signal (that is, the signal from service eNB).Because eNB 2702 can be used as AP by this way 2706 concealed nodes operation, so so the problem of will be referred to as hidden node problem.
In order to mitigate the hidden node problem in UE channel measurement, whether UE can contemplate during channel measurement eNB Take resource.
Therefore, UE can perform channel measurement to three kinds of situations being provided below.Channel measurement can include on Service the Reference Signal Received Power (RSRP) of eNB signal including service eNB signal and the signal of interference with disturbing and making an uproar Acoustic ratio (SINR), Reference Signal Received Quality (RSRQ) or received signal strength indicator symbol (RSSI).
1) when eNB takes resource and UE is allocated resource, UE performs channel measurement and measures the RSRP based on CRS, Whole in RSRP, RSRQ and RSSI based on DRS.
2) when eNB takes resource but the unallocated resources of UE, UE perform channel measurement and measure RSRP based on CRS and RSSI。
3) when eNB is not take up resource and the unallocated resources of UE, UE performs channel measurement and simultaneously measures RSSI.
If there is concealed nodes, in situation 1) and 2) in, SINR passes through (service eNB signal power)/{ (hide section The interfering signal power of point)+(noise power) } given.For 3), in the absence of service eNB signals so that UE can measure { (complete Portion's signal power)+(noise power) }.UE can will take the RSSI_occupied of the Timing measurement of resource in eNB and in eNB Be not take up the Timing measurement of resource RSSI_unoccupied distinguish, calculate RSSI_occupied and RSSI_unoccupie it Between poor RSSI_gap, and measuring situation 1) and consideration RSSI_gap corrects CQI value during SINR 2).
Figure 28 is the block diagram of UE equipment in accordance with an embodiment of the present disclosure.
With reference to figure 28, UE 2800 can include transceiver 2810 and the controller of the operation for controlling UE 2800 2830, transceiver 2810 include being used for performing the transmitter 2815 that is sent and received with the signal of another equipment (for example, eNB) and Receiver 2820.In the disclosure, the embodiment for the resource allocation of unlicensed band can be interpreted by controller 2830 perform.However, controller 2830 and transceiver 2810 need not be implemented as separated module, and it may be implemented as example Such as a component of the form of one single chip.
Figure 29 is the block diagram of eNB in accordance with an embodiment of the present disclosure.
With reference to figure 29, eNB 2900 can include transceiver 2910 and the controller of the operation for controlling UE 2900 2930, transceiver 2910 includes being used to perform the hair sent and received with the signal of another equipment (for example, UE or another eNB) Send device 2915 and receiver 2920.In the disclosure, the embodiment for the resource allocation of unlicensed band can be interpreted Performed by controller 2930.However, controller 2930 and transceiver 2910 need not be implemented as separated module, and can be by It is embodied as a component of the form of such as one single chip.
It should be noted that LAA controls/data signal transmission scheme, LAA UE operating process, resource frame configuration and UE and The structure of eNB equipment is not intended to limitation the scope of the present disclosure.It should not be construed referring to figs. 1 to all elements or operation of 29 descriptions For the basic element for implementing the disclosure, and it can not destroy the main points of the disclosure or even include the model of some elements Enclose interior realization.
Can be by including the memory for storing corresponding program code in transmitter, receiver, BS or UE element Equipment realizes above-mentioned BS or UE operation.That is, BS or UE controller passes through by means of processor or central processing Unit (CPU), which reads and performed, is stored in the program code in memory devices to perform aforesaid operations.
As described herein, the various assemblies in entity, eNB or UE or module can use for example is aoxidized based on complementary metal The hardware circuit of the logic circuit of thing semiconductor, firmware, hardware circuit, the firmware of software and/or the combination using such as hardware And/or it is embedded in the software operation in machine readable media.For example, can be by using such as transistor, gate and special The electronic circuit of integrated circuit (ASIC) performs various electrical arrangements and method.
Although it have been described that embodiment of the disclosure, but can carry out without departing from the scope of the disclosure Various changes.Therefore, the scope of the present disclosure should be limited by appended claims and its equivalent rather than described embodiment.

Claims (13)

1. a kind of method for being used to distribute resource in the cellular network using unlicensed band, methods described include：
At least one assignment of resources signal is generated, at least one assignment of resources signal, which includes instruction, can pass through unlicensed band The information of multiple continuous uplinks (UL) subframe of transmission；
Assignment of resources is sent during at least one downlink (DL) subframe to user equipment (UE) by unlicensed band to believe Number；And
During continuous UL subframe UL data are received from UE.
2. the method for claim 1, wherein continuous UL subframe is by least one of following combination instruction：UE is specific Start information and the specific end of UE or length information, the specific start informations of UE and public end or length for continuous UL subframe Information, the specific end of public start information and UE for continuous UL subframe or length information and for continuous UL subframe Public start information and public end or length information.
3. method as claimed in claim 2, wherein, the beginning timing of the end or length information based on start information, use The UL taken in the DL subframe taken to be communicated by unlicensed band, for being communicated by unlicensed band The beginning of subframe, the subframe for DL-UL switchings occur, send start information or end or the timing of length information, authorized frequency bands The subframe index of subframe index or unlicensed band determines.
4. method as claimed in claim 2, wherein, the start information is permitted by UL, the public or special DL of physical layer Control information (DCI) or media access control (MAC) control element (CE) are sent, and
The end or length information pass through MAC CE, radio resource control (RRC) signaling, the high-rise control signal of data field Or the system information block (SIB) of broadcast channel (BCH) is sent.
5. the method for claim 1, wherein the assignment of resources signal includes distributing to the phase of multiple continuous UL subframes Same hybrid automatic repeat-request (HARQ) procedure identifier (ID) or different HARQ procedure ID, and
Each in the multiple HARQ procedure ID is regularly distributed for corresponding UL subframe, or in another UL subframe In can use.
6. a kind of method for being used to receive resource allocation in the cellular network using unlicensed band, methods described include：
During at least one downlink (DL) subframe at least one assignment of resources signal, institute are received from enode b (eNB) Stating at least one assignment of resources signal includes multiple continuous uplinks (UL) subframe that instruction can be transmitted by unlicensed band Information；
Multiple continuous UL subframes are identified based on assignment of resources signal and other control signals；And
During continuous UL subframe UL data are sent to eNB.
7. method as claimed in claim 6, wherein, continuous UL subframe is by least one of following combination instruction：UE is specific Start information and the specific end of UE or length information, the specific start informations of UE and public end or length for continuous UL subframe Information, the specific end of public start information and UE for continuous UL subframe or length information and for continuous UL subframe Public start information and public end or length information.
8. method as claimed in claim 7, wherein, the end or length information are based on identified below：
The beginning timing of start information；
Beginning for the DL subframe taken of the communication by unlicensed band；
Beginning for the UL subframe taken of the communication by unlicensed band；
There is the subframe of DL-UL switchings；
Send start information or end or the timing of length information；
The subframe index of authorized frequency bands；Or
The subframe index of unlicensed band.
9. method as claimed in claim 7, wherein, the start information is permitted by UL, the public or special DL of physical layer Control information (DCI) or media access control (MAC) control element (CE) are sent, and
The end or length information pass through MAC CE, radio resource control (RRC) signaling, the high-rise control signal of data field Or the system information block (SIB) of broadcast channel (BCH) is sent.
10. method as claimed in claim 6, wherein, the assignment of resources signal includes distributing to multiple continuous UL subframes Identical hybrid automatic repeat-request (HARQ) procedure identifier (ID) or different HARQ procedure ID, and
Each in the multiple HARQ procedure ID is regularly distributed for corresponding UL subframe, or in another UL subframe In can use.
11. method as claimed in claim 6, in addition to：
Listen Before Talk (LBT) is performed before the first subframe among continuous UL subframe for using first subframe； And
If LBT successes, it is determined that during the first subframe or the subframe and the first subframe of predetermined quantity including the first subframe, It is possible to be communicated by the UL of unlicensed band,
Wherein, the timing for performing LBT is determined based at least one of：Receive the timing of assignment of resources signal, be used for Pass through the beginning timing of the UL subframe taken of the communication of unlicensed band, accounting for for the communication by unlicensed band The beginning timing of DL subframe and the frame of authorized frequency bands start timing.
12. a kind of enode b (eNB) for being used to distribute resource in the cellular network using unlicensed band, the eNB bags Include：
Controller, is configurable to generate at least one assignment of resources signal, and at least one assignment of resources signal includes instruction The information of multiple continuous uplinks (UL) subframe that can be transmitted by unlicensed band；And
Transceiver, it is configured as sending assignment of resources signal and more to user equipment (UE) during at least one DL subframe During individual continuous UL subframe UL data are received from UE.
13. a kind of user equipment (UE) for being used to receive resource allocation in the cellular network using unlicensed band, the UE Including：
Transceiver, it is configured as during at least one downlink (DL) subframe, at least one is received from enode b (eNB) Individual assignment of resources signal, at least one assignment of resources signal includes instruction can be by the multiple continuous of unlicensed band transmission The information of up-link (UL) subframe, and send UL data to eNB during continuous UL subframe；With
Controller, it is configured as identifying multiple continuous UL subframes, Yi Jixiang based on assignment of resources signal and other control signals The continuous UL subframe that transceiver notice is identified.
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