CN108781463A

CN108781463A - Low latency PRACH designs in unlicensed spectrum

Info

Publication number: CN108781463A
Application number: CN201680081168.7A
Authority: CN
Inventors: 叶悄扬; 晓翔·S·林; 牛华宁; 阿比哈吉特·波尔卡尔; 权焕准; 全晸鍸
Original assignee: Intel IP Corp
Current assignee: Apple Inc
Priority date: 2016-03-02
Filing date: 2016-09-29
Publication date: 2018-11-09
Anticipated expiration: 2036-09-29
Also published as: CN115209562A; CN108781463B; WO2017151187A1

Abstract

The method for the low latency PRACH designs in unlicensed spectrum is generally described herein.The exemplary means of user equipment (UE) include：Memory；And processing circuit, processing circuit are used for：Listem-before-talk (LBT) process is executed on one or more channels of unlicensed spectrum.Processing circuit is additionally operable to：In response to clear channel assessment (CCA) (CCA), the associated with low latency random access (RA) process first first message sent is encoded in unlicensed spectrum.First message includes Physical Random Access Channel (PRACH) lead code and message part.Message part includes Cell Radio Network Temporary Identity symbol (C-RNTI), buffer status reporting (BSR) information, at least one of the mark of the ability of UE, and/or UE.Processing circuit is additionally operable to：Uplink (UL) is received in response to the first step based on low latency RA processes to authorize, coding UL data are for transmission.

Description

Low latency PRACH designs in unlicensed spectrum

Prioity claim

The US provisional patent Shen for the Serial No. 62/307,202 that patent application claims were submitted on March 11st, 2016 Please with the benefit of priority of the U.S. Provisional Patent Application for the Serial No. 62/302,398 submitted on March 2nd, 2016, they It is incorporated herein with its entirety by quoting.

Technical field

Embodiment is related to cellular network.Some embodiments are related to third generation partner program long term evolution (3GPP LTE) Carrier wave polymerization in network and advanced (LTE-A) networks of LTE and forth generation (4G) network and the 5th generation (5G) network.

Background technology

The enhancing of LTE in 3GPP versions 13 is used to assist access (LAA) to realize in unlicensed spectrum by authorizing Operation, LAA polymerize (CA) frame by using flexible carrier wave and carry out expansion system bandwidth.Potential LTE operation in unlicensed spectrum It may include the independent LTE system (example in the LTE operation or unlicensed spectrum in the unlicensed spectrum via dual link (DC) Such as, MuLTEfire).

Description of the drawings

Fig. 1 shows the radio telecommunication network for executing low latency RA processes according to some embodiments of the present disclosure 100。

Fig. 2 shows the block diagrams of the component of user equipment according to an embodiment of the present disclosure (UE) equipment 1000.

Fig. 3 shows the signal graph for two step RA processes of low latency according to some embodiments of the present disclosure.

Fig. 4 A show the signal graph of the low latency single step RA processes for failure according to some embodiments of the present disclosure.

Fig. 4 B show the signal graph for successful low latency single step RA processes according to some embodiments of the present disclosure.

Fig. 5 shows the flow chart of the method for executing low latency RA processes according to some embodiments of the present disclosure.

Fig. 6 shows the flow chart of the method for executing low latency RA processes according to some embodiments of the present disclosure.

Fig. 7 shows the flow chart of the method for executing low latency RA processes according to some embodiments of the present disclosure.

Fig. 8 is shown according to some embodiments of the present disclosure using computer system as the block diagram of the machine of exemplary forms.

Specific implementation mode

Following description and drawings have absolutely proved specific embodiment so that those skilled in the art can implement it ?.Other embodiment can have structured, logic, electrical, process and other changes.The part of some embodiments and Feature can be included in other embodiment, or can substitute part and the feature of other embodiment.It is explained in claim The embodiment stated covers all available equivalent forms of these claims.

Embodiment is provided for assisting the low latency of access (LAA) or MulteFire in an unlicensed spectrum via mandate The system and method that Physical Random Access Channel (PRACH) signal is sent.PRACH can be used for scheduling request (SR), uplink Synchronous and for initial UL transmissions the power control in road (UL).In general, SR may include the four step random access mistakes based on contention Journey, being somebody's turn to do the four step random access procedures based on contention includes：UE provides PRACH preamble signals；ENodeB is asked with random access (RAR) signal is asked to be responded；UE offers C-RNTI with Cell Radio Network Temporary Identity symbol (C-RNTI) or temporarily 3 signal of message；And eNodeB solves message (for example, message 4) with contention and is responded.It is operated in an unlicensed spectrum When, the RA processes of radio transmitter may become complicated because of listem-before-talk (listen-before-talk, LBT) agreement, LBT agreements are radio transmitter sensed medias first and the process that is only just sent when sensing medium clear, Referred to as clear channel assessment (CCA) (CCA).CCA determines presence of the signal on channel using at least energy measuring (ED).With adopting LBT processes can be executed before sending their corresponding message associated with RACH with LBT, both UE and eNodeB, this A large amount of delays may be added to random access procedure, and may limit UL transmissions.

Fig. 1 is shown according to some embodiments of the present disclosure for executing the wireless of low latency random access (RA) process Telecommunication network 100.In some embodiments, third generation partner program (3GPP) may be implemented in radio telecommunication network 100 Five generations (5G) wireless network or advanced (LTE-A) wireless network of third generation partner program (3GPP) long term evolution.

Illustrative telecommunication network, which includes evolution node B (eNodeB) 120 and UE 104, eNodeB 120, accordingly to be covered It is operated in region or cell 122, and UE 104 is located in the overlay area of cell 122.Telecommunication network 100 may include more ENodeB and/or UE.The overlay area 122 of eNodeB 120 can be further divided into three sectors.In some examples In, each sector of eNodeB 120 can also be considered as cell.

UE 170 can provide the hair for going to eNodeB 120 in authorizing frequency spectrum, unlicensed spectrum or combination thereof Send and receive the transmission from eNodeB 120.It may include dual link to authorize the operation in frequency spectrum and unlicensed spectrum (DC).Operation only in unlicensed spectrum can use MuLTEfire.In some instances, the operation in unlicensed spectrum It can polymerize (CA) frame by using flexible carrier wave to extend available bandwidth via LAA, LAA.In order to ensure with it is incumbent System and other LAA/MuLTEfire coexistence of systems, the transmission in unlicensed spectrum may include executing LBT processes, Yi Ji It completes CCA and retains transmission before sensing channel idle.

In operation, radio telecommunication network 100 may include that eNodeB 120 and UE 104 are carried out by unlicensed spectrum The ability of communication.In order to eNodeB 120 provide UL data, UE 104 can initiate include PRACH signals transmission SR.It removes Except SR, PRACH signals can be used for the power control that uplink (UL) is synchronous and sends for initial UL.Due to LBT Realization, RA processes be likely to occur big delay and may limit UL transmission.

In one embodiment of the low latency RA processes in supporting unlicensed spectrum, UE 104 and eNodeB 120 can be with Support two step RA processes (for example, other than LBT processes) of low latency.In the first step of two step RA processes of low latency, response In CCA instruction channel idles (for example, according to LBT processes), UE 104 can provide the first hair in the PRACH resources distributed It send.In one example, first to send may include PRACH lead codes and message part, the message part include (for example, It is interim or distributed) C-RNTI, buffer status reporting (BSR) information, the ability of UE 104 and message 3, which can To include the mark of UE 104.In some instances, message part can also include common control channel (CCCH) sub-header.Disappear Breath part may include medium access control (MAC) part and the part radio resource control (RRC), and the parts MAC include can C-RNTI, BRS information and layer 1 (L1)/MAC UE abilities of energy, the parts RRC include being identified with the UE solved for contention RRC information.Alternatively, UE marks can be included in the parts MAC.

In response to receiving the first transmission, eNodeB 120 can provide the second transmission including RAR and/or message 4, should Second send be via physical downlink control channel (PDCCH) or evolution PDCCH (ePDCCH) use in the first transmission The C-RNTI received from UE 104 or the running time-frequency resource used based on the lead code sent by first are calculated public random Access one in RNTI (RA-RNTI) it is scheduled.

It is included in C-RNTI in the second transmission or RA-RNTI can be based on the contention result of eNodeB 120.It strives PDCCH/ePDCCH or the either parts MAC or the parts RRC can be based on (for example, by UE in being sent first with solution 104 any one provided) in one execute.Based on PDCCH/ePDCCH, if PDCCH/ePDCCH The C-RNTI distributed including UE, then contention solution may be considered that success.Based on the parts MAC, if MAC The C-RNTI that is distributed of the part including the UE 104 or UE 104 that provides is identified in being sent first, then solve can be with for contention It is considered success.Based on the parts RRC, if the RRC information of the parts RRC provided in being sent first is included in The UE 104 provided in first transmission is identified, then contention solution may be considered that success.

UL authorized appropriations can be included in the message part of RAR, the C-RNTI distributed with UE 104 In PDCCH/ePDCCH or PDCCH/ePDCCH with the RA-RNTI distributed.If being included in the institute with UE 104 In the PDCCH/ePDCCH of the C-RNTI of distribution, then UE 104 can decode the use of the C-RNTI maskings distributed with UE 104 It is authorized in downlink (DL) the control information (DCI) and UL of scheduling RAR/ message 4.If be included in RA-RNTI PDCCH/ePDCCH in, then UE 104 can be decoded is awarded with the DL for dispatching RAR/ message 4 of the RA-RNTI maskings of distribution It weighs and the UL for dispatching PUSCH is authorized.

In another embodiment of the low latency RA processes in supporting unlicensed spectrum, UE 104 and eNodeB 120 can be with Support low latency single step RA processes (for example, other than LBT processes).In the first step of low latency single step RA processes, response In CCA instruction channel idles (for example, according to LBT processes), UE 104 can provide the first hair in the PRACH resources distributed It send.First to send may include PRACH lead codes and message part, which includes (for example, interim or distributed ) C-RNTI, BSR information, CCCH sub-headers, and/or message 3, which may include the mark of UE 104 (for example, can be with It is solved for contention).Message part may include medium access control (MAC) part and the parts RRC, and the parts MAC include C- RNTI, BRS information, CCCH sub-headers, layer 1 (L1)/MAC UE abilities, the parts RRC include with the UE marks solved for contention The RRC information of knowledge.Alternatively, the UE marks solved for contention can be included in the parts MAC.First sends and can use It is leading to can be used for PRACH for physical uplink control channel (PUCCH) waveform, wherein first part's (for example, n symbol) Code, remainder (for example, remaining m symbol) can be used for message part.The duration of low latency PUCCH (sPUCCH) At most up to 4 symbols.SPUCCH can have (interlace) structure that interweaves, wherein having 10 objects in 20MHz systems Manage resource block (PRB)/intertexture.Can one or more intertexture UE 104 be distributed to send for UL.

If receiving UL in predetermined time amount to authorize (for example, in k subframe, or for (indicating successfully to strive With solution) the MAC contentions of C-RNTI solve timer it is expired before), UE 104 can normally send UL data.UL It authorizes to be included in utilize via PDCCH/ePDCCH and authorizes disappearing for the C-RNTI received from UE 104 scheduling for UL In breath.Otherwise, UE 104 can send another first hair with new random preamble index at the PRACH subframes of configuration It send.It can be according to absolute time (for example, cipher key management services (KMS) time) or according to effective DL subframe (for example, with DL hairs The subframe sent) time window of k subframe counted.

For first transmissions of the UE 104 during two step RA processes or single step RA, top n symbol can be used to send out Send PRACH lead codes.PRACH lead codes can be also used for the channel estimation after detection.Remaining M symbol can be used for counting According to transmission (for example, C-RNTI, BSR information, CCCH sub-headers, message 3 etc.).For example, when first step PRACH transmission be When being carried out in sPUCCH resources, N and M can be equal to 2, be last 4 SC-FDMA symbols of special subframe.If for the One sends one intertexture of distribution, then in 20MHz systems, has 20 PRB to can be used for data transmission on 2 symbols.Using just Phase-shift keying (PSK) (QPSK) is handed over to modulate, each intertexture can carry up to 480.In one example, initial access and BSR are used for Required payload size be 56, have additional 24 cyclic redundancy check (CRC) position.The case where code check is 1/3 Under, the quantity of bits of coded can be 240, this is more much smaller than 480.It, can be with if effectively magnitude of load increases above 480 Additional intertexture is distributed into UE 104, or encoding rate can be reduced to allow more highdensity transmission.

When PRACH lead codes need four symbols in PUCCH resource, the physical uplink link after PUCCH resource Shared channel (PUSCH) subframe can be used to carry the message part of the first transmission (for example, C-RNTI, BSR information, CCCH Sub-header and message 3).First can be directed to and send the one or more intertextures for distributing PUSCH subframes, and can be in frequency domain And/or multiple UE are multiplexed in code domain.In order to reduce collision probability, less user can be distributed to be carried out by PUSCH subframes It sends.PRACH preamble sequences can be used for channel estimation.It can use and send identical structure with conventional PUSCH, wherein solving Reference signal (DMRS) symbol is adjusted to can be used for channel estimation.If cannot be correctly detected in the PRACH resources distributed The first message part (for example, C-RNTI, BSR information, message 3 and CCCH sub-headers) sent that is upper while sending, but just Really detect PRACH preamble sequences, then two steps/single step PRACH can return back to traditional RA processes.

ENodeB 120 and UE 104 support more than one RA processes (for example, tradition RA processes, two step RA processes and The combination of single step RA processes) system in, eNodeB 120 and/or UE 104 can indicate that they support or intend which is used Method.In the example specific to UE, eNodeB 120 can make when UE 104 is in RRC connection modes to the instructions of UE 104 With which RA process.

During specific to cell, eNodeB 120 can indicate (for example, via RRC signaling), and it supports tradition RA Which of process, two step RA processes, and/or single step RA processes RA processes, and UE 104 can determination which RA used Process.From UE 104 to eNodeB 120 indicate an example of the method for selected RA processes may include use with it is selected The associated PRACH preamble signatures of RA processes selected.For example, eNodeB 120 can be the RA processes specified one each supported Group specific preamble signature.UE 104 can use the lead code of one group of preamble signature associated with selected RA processes Signal, and eNodeB 120 can detect selected RA processes by detecting preamble signature.

From UE 104 to eNodeB 120 indicate another example of the method for selected RA processes may include use with The selected associated specific resources of RA processes (for example, time or frequency sub-carrier).For example, eNodeB 120 can be every The RA processes of a support specify one group of specific resources.UE 104 can be used and be come from one group associated with selected RA processes Resource in resource, and eNodeB 120 can detect selected RA mistakes by the resource that message 1 is sent on it Journey.

ENodeB 120 can provide the instruction to selected RA processes in Master Information Block (MIB) to UE 104. ENodeB 120 can indicate the PRACH in MIB to be set as particular value associated with RA processes that are selected or being supported. In one example, eNodeB 120 can be by by one or more of the payload of MIB blocks reserved bit or newer One or more of MIB payload extra order is set as particular value associated with selected RA processes, to indicate The RA processes of selection.

ENodeB 120 provides another example of the method for the instruction to RA processes that are selected or being supported to UE 104 Being can the instruction in system information block (SIB) or extension SIB (eSIB).ENodeB 120 can will be selected by SIB/eSIB The RA processes instruction selected is set as particular value associated with selected RA processes, and UE 104 can be based on SIB/eSIB In selected RA processes indicate to detect selected RA processes.In one example, it can extend SIB2/eSIB2's PRACH configuration index parameters, to include the support to one or both of two step RA processes and single step RA processes.eNodeB 120 can be by being set as related to selected RA processes by the PRACH configuration index parameters of the extension in SIB2/eSIB2 The particular value of connection, to indicate selected RA processes.In another example, it can be directed to during two step RA processes and single step RA One of or both new parameter is added to SIB/eSIB (for example, in PRACH configuration fields of SIB2/eSIB2).eNodeB 120 can be by being arranged parameter associated with selected RA processes, to refer in the PRACH configuration fields of SIB2/eSIB2 Show selected RA processes.

Another example may include the finger provided in higher level signaling (for example, RRC signaling) to selected RA processes Show.In one example, when UE 104 is in RRC connections (RRC_CONNECTED) pattern, RRC signaling can be with configuration pin pair The RA procedural types of UE 104.The indicating means can be limited to the case where UE 104 has completed to be initially accessed, and may not Suitable for the instruction to selected RA processes for initial access.For example, being in RRC connection modes in UE 104 and needing When being directed to UL synchronous and/or the scheduling request selected RA processes of execution, the selected instruction sides PRACH can be used Method.In switch instances when the selected PRACH indicating means can also be used in issued PRACH based on contention.It should Selected PRACH indicating means can be also used for UE 104 and attempt from the RRC weights restored in radio bearer setup complete under situation New connection.

Embodiment described herein can be realized in the system using arbitrary appropriately configured hardware and/or software.Fig. 2 Show the block diagram of the component of user equipment (UE) equipment 200 according to the embodiment of the present disclosure.UE 200 can be in the UE of Fig. 1 It is realized in 104.In some embodiments, UE equipment 200 may include the application circuit being at least coupled as shown in the figure 202, baseband circuit 204, radio frequency (RF) circuit 206, front-end module (FEM) circuit 208 and one or more antennas 210.

Application circuit 202 may include one or more application processor.For example, application circuit 202 may include circuit, Such as, but not limited to one or more single or multiple core processors.(one or more) processor may include general processor and The arbitrary combination of application specific processor (for example, graphics processor, application processor etc.).Processor can be filled with memory/storage It sets and is coupled and/or may include storage/memory, and can be configured as executing and be deposited in storage/memory The instruction of storage is so that various applications and/or operating system can be run in system.

Baseband circuit 204 may include circuit, such as, but not limited to one or more single or multiple core processors.Base band electricity Road 204 may include one or more baseband processor and/or control logic, to handle from the reception signal road of RF circuits 206 The baseband signal that diameter receives, and generate the baseband signal of the transmission signal path for RF circuits 206.Baseband processing circuitry 204 can connect generation and processing for baseband signal with application circuit 202 by interface, and control RF circuits 206 Operation.For example, in some embodiments, baseband circuit 204 may include the second generation (2G) baseband processor 204a, third (3G) baseband processor 204b, forth generation (4G) baseband processor 204c, and/or for the generation in other existing generation, exploitations (one or more) other baseband processor in generation or the following generation (for example, the 5th generation (5G), 6G etc.) that will be developed 204d.Baseband circuit 204 (for example, one or more of baseband processor 204a-d), which can be handled, to be made it possible to via RF electricity Road 206 is come the various radio control functions that are communicated with one or more radio nets.Radio control functions can be with Including but not limited to：Signal modulation/demodulation, coding/decoding, radio frequency displacement etc..In some embodiments, baseband circuit 204 Modulation/demodulation circuit may include Fast Fourier Transform (FFT) (FFT), precoding, and/or constellation mapping/demapping function.? In some embodiments, the coding/decoding circuit of baseband circuit 204 may include convolution, tail biting (tail-biting) convolution, Turbo, Viterbi (Viterbi), and/or low-density checksum (LDPC) coder/decoder functionalities.Modulating/demodulating and The embodiment of coder/decoder functionalities is not limited to these examples, and may include that other are appropriate in other embodiments Function.

In some embodiments, baseband circuit 204 may include the element of protocol stack, for example, evolved universal terrestrial without Line is electrically accessed the element of net (EUTRAN) agreement, including such as physics (PHY) element, medium access control (MAC) element, wireless Current source road controls (RLC) element, Packet Data Convergence Protocol (PDCP) element, and/or radio resource control (RRC) element. Central processing unit (CPU) 204e of baseband circuit 204 can be configured as operation and be used for PHY, MAC, RLC, PDCP, and/or RRC The element of the protocol stack of the signaling of layer.In some embodiments, baseband circuit may include one or more digital audio letters Number processor (DSP) 204f.(one or more) audio DSP 204f can be or including being used for compression/de-compression and echo The element of elimination, and may include other processing elements appropriate in other embodiments.In some embodiments, base band electricity The component on road can be combined as suitable in one single chip or one single chip group or be disposed on same circuit board.At some In embodiment, the composition component of baseband circuit 204 and application circuit 202 can be for example realized together in system on chip (SOC) Some or all of composition component.

In some embodiments, baseband circuit 204 can provide the communication mutually compatible with one or more radiotechnics. For example, in some embodiments, baseband circuit 204 can support with evolved universal terrestrial radio access network (EUTRAN) and/ Or other wireless MANs (WMAN), WLAN (WLAN), wireless personal-area network (WPAN) communicate.Baseband circuit 204 are configured as that the embodiment of the radio communication of more than one wireless protocols is supported to be referred to alternatively as multimode baseband circuit.

RF circuits 206 may be implemented to be led to wireless network using modulated electromagnetic radiation by non-solid medium Letter.In various embodiments, RF circuits 206 may include switch, filter, amplifier etc. to promote to be led to wireless network Letter.RF circuits 206 may include receiving signal path, which may include to being received from FEM circuits 208 RF signals carry out down coversion and baseband signal are supplied to the circuit of baseband circuit 204.RF circuits 206 can also include sending Signal path, the transmission signal path may include that the baseband signal provided baseband circuit 204 carries out up-conversion and incites somebody to action RF output signals are supplied to FEM circuits 208 for the circuit of transmission.

In some embodiments, RF circuits 206 may include receiving signal path and transmission signal path.RF circuits 206 Reception signal path may include mixer 206a, amplifier circuit 206b and filter circuit 206c.RF circuits 206 transmission signal path may include filter circuit 206c and mixer 206a.RF circuits 206 can also include closing Generator circuit 206d, condensating synthesizering circuit 206d by reception signal path and send the mixed of signal path for frequency synthesis Frequency device circuit 206a is used.In some embodiments, the mixer 206a for receiving signal path can be configured as based on conjunction The frequency synthesis that generator circuit 206d is provided is come to the RF signals received from FEM circuits 208 progress down coversion.Amplifier electricity Road 206b can be configured as amplifying downconverted signal, and filter circuit 206c can be configured as from downconverted Signal remove unwanted signal with generate output baseband signal low-pass filter (LPF) or bandpass filter (BPF).It can It is supplied to baseband circuit 204 for further processing so that baseband signal will be exported.In some embodiments, output baseband signal can To be zero-frequency baseband signal, but this is not required.In some embodiments, the mixer 206a for receiving signal path can be with Including passive frequency mixer, but the range of embodiment is not limited in this respect.

In some embodiments, the mixer 206a for sending signal path can be configured as being based on condensating synthesizering circuit The frequency synthesis that 206d is provided to carry out up-conversion to input baseband signal, to generate the RF output letters for FEM circuits 208 Number.Baseband signal can be provided by baseband circuit 204, and can be filtered by filter circuit 206c.Filter circuit 206c may include low-pass filter (LPF), but the range of embodiment is not limited in this respect.

In some embodiments, it receives the mixer 206a of signal path and sends the mixer of signal path 206a may include two or more frequency mixers, and can be arranged to be respectively used to quadrature frequency conversion and/or just hand in change Frequently.In some embodiments, it receives the mixer 206a of signal path and sends the mixer 206a of signal path It may include two or more frequency mixers, and mirror image can be arranged to and inhibited (for example, hartley (Hartley) mirror image Inhibit).In some embodiments, it receives the mixer 206a of signal path and sends the mixer of signal path 206a can be arranged to be respectively used to Direct-conversion and/or Direct conversion.In some embodiments, signal path is received Mixer 206a and the mixer 206a for sending signal path can be configured for superheterodyne operation.

In some embodiments, output baseband signal and input baseband signal can be analog baseband signals, but embodiment Range do not limited in this respect.In some alternative embodiments, output baseband signal and input baseband signal can be several Word baseband signal.In these alternate embodiments, RF circuits 206 may include analog-digital converter (ADC) circuit and digital-to-analogue conversion Device (DAC) circuit, and baseband circuit 204 may include digital baseband interface to be communicated with RF circuits 206.

In some bimodulus embodiments, individual radio IC circuits can be provided to handle the letter for being directed to each frequency spectrum Number, but the range of embodiment is not limited in this respect.

In some embodiments, condensating synthesizering circuit 206d can be fractional N synthesizer or score N/N+1 synthesizers, but real The range for applying example is not limited in this respect, because other kinds of frequency synthesizer may be appropriate.For example, synthesizer is electric Road 206d can be increment summation (delta-sigma) synthesizer, frequency multiplier or the synthesis including having the phaselocked loop of frequency divider Device.

Condensating synthesizering circuit 206d can be configured as synthesizing output frequency based on frequency input and frequency divider control input, with For being used by the mixer 206a of RF circuits 206.In some embodiments, condensating synthesizering circuit 206d can be score N/N+ 1 synthesizer.

In some embodiments, frequency input can be provided by voltage controlled oscillator (VCO), but it's not necessary.Frequency dividing Device control input can be provided by baseband circuit 204 or application processor 202 according to desired output frequency.In some implementations In example, frequency divider control input (for example, N) can be determined from look-up table based on the channel indicated by application processor 202.

The condensating synthesizering circuit 206d of RF circuits 206 may include frequency divider, delay locked loop (DLL), multiplexer, And phase accumulator.In some embodiments, frequency divider can be dual-mode frequency divider (DMD), and phase accumulator can be with It is digital phase accumulator (DPA).In some embodiments, DMD can be configured as by input signal divided by N or N+1 (for example, Based on carry-out (carry out)) to provide score division ratio.In some example embodiments, DLL may include one group of grade Tunable delay component, phase detectors, charge pump and the D flip-flop of connection.In these embodiments, delay element can It is configured as VCO Periodic decompositions being grouped at Nd equal phases, wherein Nd is the number of the delay element in delay line. In this way, it is a VCO period that DLL, which provides negative-feedback to assist in ensuring that the total delay by delay line,.

In some embodiments, condensating synthesizering circuit 206d can be configurable to generate carrier frequency and be used as output frequency, and In other embodiments, output frequency can be the multiple (for example, twice of carrier frequency, four times of carrier frequencies) of carrier frequency, And there are multiple phases different from each other to be generated in carrier frequency to use in conjunction with orthogonal generator and divider circuit Multiple signals.In some embodiments, output frequency can be LO frequencies (fLO).In some embodiments, RF circuits 206 can To include IQ/ polarity switch.In some embodiments, RF circuits 206 may include mimo transceiver.

FEM circuits 208 may include receiving signal path, which may include being configured as operation from one Signal that RF signals that a or mutiple antennas 210 receives, amplification receive and by the signal received through amplified version It is supplied to the circuit of RF circuits 206 for further processing.FEM circuits 208 can also include sending signal path, transmission letter Number path may include that the signal being used for transmission for being configured as providing RF circuits 206 is amplified for by one or more One or more of a antenna 210 antenna is come the circuit that transmits.

In some embodiments, FEM circuits 208 may include TX/RX switches in sending mode and reception pattern operation Between switch.FEM circuits may include receiving signal path and transmission signal path.The reception signal path of FEM circuits can be with Including low-noise amplifier (LNA) to be amplified to the RF signals received, and provide the enlarged RF letters received Number as the output output of RF circuits 206 (for example, to).The transmission signal path of FEM circuits 208 may include power amplifier (PA) to be amplified to (for example, being provided by RF circuits 206) input rf signal, and may include one or more filtering Device is used for the RF letters of subsequent transmission (for example, being transmitted by one or more of one or more antennas 210 antenna) to generate Number.

In some embodiments, UE equipment 200 may include add ons, for example, storage/memory, display, Camera, sensor, and/or input/output (I/O) interface.

In operation, UE equipment 200 can by authorize both frequency spectrum and unlicensed spectrum be communicated (for example, via Baseband circuit 204, RF circuits 206 and FEM circuits 208).In some instances, UE equipment 200 can be supported by authorizing frequency It is sent while composing (for example, PCell) and unlicensed spectrum (for example, SCell).In order to provide UL data to eNodeB, UE is set Standby 200 can send (for example, via FEM circuits 208) via PRACH signals initiates SR.Other than SR, PRACH signals can For the power control that uplink (UL) is synchronous and is sent for initial UL.Because realizing LBT, RA processes may There is big delay and UL transmissions may be limited.It should be appreciated that LBT processes and PRACH send can by baseband circuit 204, At least one combination of RF circuits 206 and FEM circuits 208 executes.

In one embodiment of the low latency RA processes in supporting unlicensed spectrum, UE equipment 200 can support low prolong Slow two steps RA processes (for example, other than LBT processes).In the first step of two step RA processes of low latency, indicated in response to CCA Channel idle (for example, according to LBT processes), UE equipment 200 can provide the first transmission in the PRACH resources distributed.? In one example, the first transmission may include PRACH lead codes and message part, which includes (for example, interim Or distributed) C-RNTI, BSR information, the ability of UE equipment 200 and message 3, which may include UE equipment 200 Mark (for example, can be used for contention solution).In some instances, message part can also include CCCH sub-headers.Message portion It may include the parts MAC and the parts RRC to divide, and the parts MAC include possible C-RNTI, BRS information and L1/MAC UE abilities, The parts RRC include the RRC information with the UE marks solved for contention.Alternatively, being used for UE marks that contention solves can be with It is included in the parts MAC.In second step, UE equipment 200 can receive the second transmission including RAR and/or message 4, should Second transmission is to use the C-RNTI received from UE 104 in the first transmission via PDCCH/ePDCCH or be based on by first One in the public random access RNTI (RA-RNTI) that the running time-frequency resource that the lead code of transmission uses is calculated scheduled.

UL authorized appropriations can be included in the message part of RAR, the C-RNTI distributed with UE equipment 200 PDCCH/ePDCCH or PDCCH/ePDCCH with the RA-RNTI distributed.If be included in UE equipment 200 In the PDCCH/ePDCCH of the C-RNTI distributed, then UE equipment 200 can decode with UE distributed C-RNTI masking Downlink DL DCI and UL for dispatching RAR/ message 4 are authorized.If being included in the PDCCH/ with RA-RNTI In ePDCCH, then UE equipment 200 can be decoded is authorized with the DL for dispatching RAR/ message 4 that distributed RA-RNTI is sheltered And the UL for dispatching PUSCH is authorized.

In another embodiment of the low latency RA processes in supporting unlicensed spectrum, UE equipment 200 can support low prolong Slow single step RA processes (for example, other than LBT processes).For example, indicating channel idle (for example, according to LBT mistakes in response to CCA Journey), UE equipment 200 can provide the first transmission in the PRACH resources distributed.First transmission may include PRACH leading Code and message part, the message part include (for example, interim or being distributed) C-RNTI, BSR information, CCCH reports Head and message 3, the message 3 may include the mark (for example, the contention that can be used at eNodeB solves) of UE equipment 200.Disappear Breath part may include medium access control (MAC) part and the parts RRC, MAC part include interim C-RNTI, BRS information, CCCH sub-headers and layer 1 (L1)/MAC UE abilities, the parts RRC include the RRC information with the UE marks solved for contention. Alternatively, the UE marks solved for contention can be included in the parts MAC.First transmission can use physical uplink link Control channel (PUCCH) waveform, wherein preceding n symbol can be used for PRACH lead codes, remaining m symbol can be used for counting It is sent according to (for example, BSR, message 3).The duration of sPUCCH is at most up to 4 symbols.SPUCCH can have single fisherman's knot Structure, wherein having 10 Physical Resource Block (PRB)/intertexture in 20MHz systems.One or more intertexture can be distributed to UE Equipment 200 sends for UL.

If receiving UL in predetermined time amount to authorize (for example, in k subframe, or for (indicating successfully to strive With solution) the MAC contentions of C-RNTI solve timer it is expired before), UE equipment 200 can normally send UL numbers According to.UL authorizes to be included in utilize via PDCCH/ePDCCH authorizes the C-RNTI received from UE equipment 200 for UL In scheduled message.Otherwise, UE equipment 200 can be sent at the PRACH subframes of configuration with new random preamble index It is another first send.It can be according to absolute time (for example, cipher key management services (KMS) time) or according to effective DL subframe (for example, the subframe sent with DL) counts the time window of k subframe.

For first transmission of the UE equipment 200 in two step process or single step process, top n symbol can be used to send PRACH lead codes.PRACH lead codes can be also used for the channel estimation after detection.Remaining M symbol can be used for data It sends (for example, C-RNTI, BSR information, CCCH sub-headers, message 3 etc.).In one embodiment, passing through sPUCCH resources When sending PRACH, N and M can be equal to 2, can occupy last 4 SC-FDMA symbols of special subframe.If payload Size increases above the available payload individually to interweave, then can additional intertexture be distributed to UE equipment 200, or can drop Low encoding rate is to allow more highdensity transmission.

When PRACH lead codes need four symbols on PUCCH, the physical uplink shared channel after PUCCH (PUSCH) subframe can be used to carry first send message part (for example, C-RNTI, BSR information, CCCH sub-headers and Message 3).First can be directed to and send the one or more intertextures for distributing PUSCH subframes, and can be in frequency domain and/or code domain The middle multiple UE of multiplexing.In order to reduce collision probability, less user can be distributed to be sent by PUSCH subframes.PRACH Preamble sequence can be used for channel estimation.It can use and send identical structure, wherein demodulated reference signal with conventional PUSCH (DMRS) symbol can be used for channel estimation.If cannot be correctly detected in the PRACH resources distributed while send The first message part (for example, C-RNTI, BSR information, message 3 and CCCH sub-headers) sent, but be correctly detected PRACH preamble sequences, then two steps/single step PRACH can return back to traditional RA processes.

Support more than one RA processes (for example, tradition RA processes, two step RA processes and single step RA processes in UE equipment 200 Combination) system in, eNodeB and/or UE equipment 200 can indicate they support or intend use which method.Specific In the example of UE, UE equipment 200 can receive the appointment to RA processes when UE equipment 200 is in RRC patterns from eNodeB.

During specific to cell, UE equipment 200 can receive eNodeB from eNodeB and support tradition RA processes, two Walk which of RA processes, and/or single step RA processes RA processes instruction, and UE equipment 200 can determination which to be used RA processes.Indicate that an example of the method for selected RA processes may include use and institute from UE equipment 200 to eNodeB The associated PRACH preamble signatures of RA processes of selection.For example, eNodeB can specify one for the RA processes each supported Group specific preamble signature.Before UE equipment 200 can use one group of preamble signature associated with selected RA processes Amble signal, and eNodeB can detect selected RA processes by detecting preamble signature.

UE equipment 200 can receive the instruction to selected RA processes in Master Information Block (MIB).ENodeB can be incited somebody to action PRACH instructions in MIB are set as particular value associated with RA processes that are selected or being supported.In one example, ENodeB 120 can be by by one or more of the payload of MIB blocks reserved bit or newer MIB blocks payload One or more of extra order be set as particular value associated with selected RA processes, to indicate selected RA mistakes Journey.

UE equipment 200, which is received to another example of the method for the instruction of RA processes that are selected or being supported, to be believed in system It ceases and is received in block (SIB) or extension SIB (eSIB).Selected RA processes in SIB/eSIB can be indicated to be arranged by eNodeB For particular value associated with selected RA processes, and UE equipment 200 can be based on the selected RA in SIB/eSIB Process indicates to detect selected RA processes.In one example, the PRACH configuration indexes ginseng of SIB2/eSIB2 can be extended Number, to include the support to one or both of two step RA processes and single step RA processes.ENodeB can be by by SIB2/ Extension PRACH configuration index parameters in eSIB2 are set as particular value associated with selected RA processes, selected to indicate The RA processes selected.In another example, one or both of two step RA processes and single step RA processes can be directed to by new parameter It is added to SIB/eSIB (for example, in PRACH configuration fields of SIB2/eSIB2).ENodeB can be by SIB2/eSIB2 PRACH configuration fields in associated with the selected RA processes parameter of setting, to indicate selected RA processes.

Indicate that another example of the method for selected RA processes may include and SIB/ from UE equipment 200 to eNodeB The associated selected RA processes instructions of eSIB are (for example, the PRACH in the PRACH configuration fields of extension SIB2/eSIB2 matches Set parameter or additional parameter).

Another example may include the finger provided in higher level signaling (for example, RRC signaling) to selected RA processes Show.In one example, when UE equipment 200 is in RRC connection modes, RRC signaling can be with configuration pin to the RA of UE equipment 200 Procedural type.The indicating means can be limited to the case where UE equipment 200 has been completed to be initially accessed, and may not be suitable for using In the instruction to selected RA processes of initial access.

Fig. 3 shows the signal graph 300 for two step RA processes of low latency according to some embodiments of the present disclosure.Showing In example, two step RA processes of low latency can be established between UE 304 and eNodeB 320.UE 304 can use the UE of Fig. 1 104, the UE equipment 200 or combination thereof of Fig. 2 is realized.ENodeB 320 can be realized with the eNodeB 120 of Fig. 1.

UE 304 can be communicated using unlicensed spectrum with eNodeB.Initially, UE 304 can execute LBT processes. In response to CCA, UE 304 can provide first to eNodeB 320 and send [1].In one example, first send [1] can be with Including PRACH lead codes and message part, which includes (for example, interim or being distributed) C-RNTI, buffering State report (BSR) information, the ability of UE 304 and message 3, the message 3 may include the mark of UE 304 (for example, can be with It is solved for contention).In some instances, message part can also include common control channel (CCCH) sub-header.Message portion It may include medium access control (MAC) part and the part radio resource control (RRC) to divide, and the parts MAC include possible C-RNTI, BRS information and layer 1 (L1)/MAC UE abilities, the parts RRC include the RRC with the UE marks solved for contention Message.Alternatively, the UE marks solved for contention can be included in the parts MAC.

In second step, in response to CCA (for example, according to LBT processes), eNodeB 320 can provide including RAR and/or The second of message 4 sends [2], which connect from UE 304 in being sent first via PDCCH/ePDCCH uses The public random access RNTI that the C-RNTI received or the running time-frequency resource used based on the lead code sent by first are calculated (RA-RNTI) it is scheduled.

Contention solves to be based on PDCCH/ePDCCH or the either parts MAC or the parts RRC (for example, in the first hair Any one provided by UE 304 is provided) in one execute.Based on PDCCH/ePDCCH, if PDCCH/ePDCCH includes the C-RNTI of UE distributed, then contention solution may be considered that success.In the feelings based on the parts MAC Under condition, if the C-RNTI that is distributed or the UE 304 that in first transmission provides of the parts MAC including UE 304 are identified, strive Success is may be considered that with solution.Based on the parts RRC, if the RRC of the parts RRC provided in being sent first The UE 304 that there is provided is identified during message includes the C-RNTI of UE 304 distributed or sent first, then solve can be by for contention Think success.

UL authorized appropriations can be included in the message part of RAR, the C-RNTI distributed with UE 304 In PDCCH/ePDCCH or PDCCH/ePDCCH with the RA-RNTI distributed.If being included in the institute with UE 304 In the PDCCH/ePDCCH of the C-RNTI of distribution, then UE 304 can decode the use of the C-RNTI maskings distributed with UE 304 It is authorized in downlink the DL DCI and UL of scheduling RAR/ message 4.If being included in the PDCCH/ with RA-RNTI In ePDCCH, then UE 304 can decode authorized with the DL for dispatching RAR/ message 4 that distributed RA-RNTI is sheltered and UL for dispatching PUSCH is authorized.

Fig. 4 A show the signal graph of the low latency single step RA processes for failure according to some embodiments of the present disclosure 400.Fig. 4 B show the signal graph 401 for successful low latency single step RA processes according to some embodiments of the present disclosure. In this example, low latency single step RA processes can be established between UE 404 and eNodeB 420.UE 404 can use the UE of Fig. 1 104, the UE equipment 200 or combination thereof of Fig. 2 is realized.ENodeB 420 can be realized with the eNodeB 120 of Fig. 1.

UE 404 can be communicated using unlicensed spectrum with eNodeB.Initially, UE 404 can execute LBT processes. In response to CCA, UE 404 can provide the first transmission [1] in the PRACH resources distributed.First send may include PRACH lead codes and message part, the message part include (for example, interim or being distributed) C-RNTI, BSR information, CCCH sub-headers and message 3, the message 3 may include the mark (for example, can be used for contention solution) of UE 404.Message portion It may include the parts MAC and the parts RRC to divide, and the parts MAC include interim C-RNTI, BRS information, CCCH sub-headers and L1/ MAC UE abilities, the parts RRC include the RRC information with the UE marks solved for contention.Alternatively, it is used for what contention solved UE marks can be included in the parts MAC.First transmission can use PUCCH waveforms, wherein preceding n symbol can be used for PRACH lead codes, remaining m symbol can be used for data (for example, BSR, message 3) transmission.The duration of sPUCCH is most Mostly up to 4 symbols.SPUCCH can have pilotaxitic texture, wherein having 10 Physical Resource Block in 20MHz systems (PRB)/interweave.Can one or more intertexture UE 404 be distributed to send for UL.

Contention solve can be based on PDCCH/ePDCCH or MAC part or RRC part (for example, first send in by UE 404 provide any one) in one execute.Based on PDCCH/ePDCCH, if PDCCH/ EPDCCH includes the C-RNTI of UE distributed, then contention solution may be considered that success.Based on the parts MAC, If the C-RNTI that is distributed or the UE 404 that in first transmission provides of the parts MAC including UE 404 are identified, contention solution It certainly may be considered that success.Based on the parts RRC, if the RRC information of the parts RRC provided in being sent first The C-RNTI distributed or the UE 404 provided in the first transmission including UE 404 are identified, then contention solution can be recognized For success.

UL authorized appropriations can be included in the message part of RAR, the C-RNTI distributed with UE 404 In PDCCH/ePDCCH or PDCCH/ePDCCH with the RA-RNTI distributed.If being included in the institute with UE 404 In the PDCCH/ePDCCH of the C-RNTI of distribution, then UE 404 can decode the use of the C-RNTI maskings distributed with UE 404 It is authorized in downlink the DL DCI and UL of scheduling RAR/ message 4.If being included in the PDCCH/ with RA-RNTI In ePDCCH, then UE 404 can decode authorized with the DL for dispatching RAR/ message 4 that distributed RA-RNTI is sheltered and UL for dispatching PUSCH is authorized.

If receiving UL in predetermined time amount to authorize (for example, in k subframe, or for (indicating successfully to strive With solution) the MAC contentions of C-RNTI solve timer it is expired before), UE 404 can normally send UL data.UL It authorizes scheduled in the C-RNTI that can be included in and be utilized via PDCCH/ePDCCH and authorize for UL and received from UE 104 In message.Otherwise, UE 404 can be sent at the PRACH subframes of configuration with new random preamble index another first It sends [4], as shown in signal graph 400.It can be according to absolute time (for example, cipher key management services (KMS) time) or according to having DL subframe (for example, the subframe sent with DL) is imitated to be counted to the time window of k subframe.

Fig. 5 shows the flow of the method 500 for executing low latency RA processes according to some embodiments of the present disclosure Figure.Method 500 can the UE 104 of Fig. 1, the UE equipment 200 of Fig. 2, the UE 304 of Fig. 3, Fig. 4 UE 404 in it is any one It is realized in person or combination thereof.

Method 500 may include, and at 510, listem-before-talk is executed on one or more channels of unlicensed spectrum (LBT) process.

Method 500 can also include, and at 520, in response to clear channel assessment (CCA) (CCA), be encoded in unlicensed spectrum Associated with low latency random access (RA) process first first message sent.First message may include PRACH leading Code and message part.Message part may include at least one of the mark of C-RNTI, BSR information, the ability of UE and UE. In some instances, message part includes the parts MAC, and the parts MAC include MAC message.MAC message may include C-RNTI, BSR At least one of the ability of information and UE.MAC message can also include the mark of UE.In some instances, message part is also May include the parts RRC, the parts RRC include RRC information.RRC information may include the mark of UE.The ability of UE may include layer One in 1UE abilities or MAC UE abilities.Message part can also include CCCH sub-headers.First transmission can use contracting Short physical uplink control channel (sPUCCH) waveform, wherein first part include PRACH lead codes, and remainder Including message part.In some instances, first part includes the first two symbol of message 3, and remainder is included in and disappears Next two symbols after the first two symbol of breath 3.

In some instances, it can be based on receiving service eNodeB (for example, the eNodeB 120 of Fig. 1, Fig. 4 The eNodeB 520 of eNodeB 420, and/or Fig. 5) support or have been selected low latency RA processes (for example, by MIB, SIB/ ESIB or RRC signaling) instruction encode first message.

Method 500 can also include decoding in dispatched via physical downlink control channel (PDCCH) and low latency The second message that RA processes associated second receive in sending.Second message may include physical down link sharing channel (PDSCH) it sends, PDSCH transmissions include that UL is authorized and included at least one of random access response or message 4.One In a little examples, the DCI for dispatching second message is scrambled via one in C-RNTI or RA-RNTI.

Low latency RA processes can also include being authorized in response to receiving the UL sent based on first, scheduling UL is sent.

Method can also include, in response to being not received by based on first in the predetermined time length after being sent first The UL of transmission is authorized, and the second second message sent is encoded in unlicensed spectrum.Before second message may include the 2nd PRACH Leading code and message part.Predetermined time length can be based on absolute time, the counting of active downlink subframe or MAC contentions Solve one in timer.Method 500 can also include, and at 530, be connect in response to the first step based on low latency RA processes Uplink (UL) mandate is received, coding UL data are for transmission.

Fig. 6 shows the flow of the method 600 for executing low latency RA processes according to some embodiments of the present disclosure Figure.Method 600 can the UE 104 of Fig. 1, the UE equipment 200 of Fig. 2, the UE 304 of Fig. 3, Fig. 4 UE 404 in it is any one It is realized in person or combination thereof.

Method 600 may include, and at 610, receives service eNodeB and supports low latency RA processes and tradition RA processes Instruction.

Method 600 can also include, and at 620, the first of coding the first transmission associated with low latency RA processes disappears Breath, which includes PRACH lead codes and message part.Method 600 can also include providing selection to service eNodeB The instruction of low latency RA processes.In some instances, it may include from one group specified for low latency RA processes to provide instruction Lead code is selected in PRACH lead codes.In some instances, it may include that selection is sent for PRACH lead codes to provide instruction Time and/or frequency resource.Time and/or frequency resource can be exclusively used in low latency RA processes.Method 600 can also include It is received from service eNodeB and is exclusively used in the time and/or frequency resource that PRACH lead codes are sent.

In some instances, method 600 may include that the finger of the selection to low latency RA processes is received from service eNodeB Show.In some instances, method 600 may include that the instruction of the selection to low latency RA processes is received from service eNodeB.Example Such as, may include to the instruction of the selection of low latency RA processes from service eNodeB receptions, based on system information block 2 (SIB2) or The PRACH_ConfigIndex parameters in SIB2 (eSIB2) are extended, to determine the selection to low latency RA processes.Show another In example, may include to the instruction of the selection of low latency RA processes from service eNodeB receptions, based in SIB2 or eSIB2 PRACH configuration fields, to determine the selection to low latency RA processes.In some instances, prolong from service eNodeB receptions to low The instruction of the selection of slow RA processes may include, based on the value of one or more of Master Information Block reserved bit, to determine to low Postpone the selection of RA processes.In some instances, receiving the instruction to the selections of low latency RA processes from service eNodeB can be with Including receiving selected RA processes in radio resource control signaling.

Fig. 7 shows the flow of the method 700 for executing low latency RA processes according to some embodiments of the present disclosure Figure.Method 700 can the eNodeB 120 of Fig. 1, the eNodeB 320 of Fig. 3, Fig. 4 eNodeB 420 in any one, Or it is realized in combination thereof.

Method 700 may include, at 710, decoding from UE in unlicensed spectrum with low latency RA process phases The first message received in associated first transmission.First message may include PRACH lead codes and message part.Message portion Point may include Cell Radio Network Temporary Identity symbol (C-RNTI), buffer status reporting (BSR) information, the ability of UE or At least one of mark of UE.Message part may include the part medium access control (MAC), and the parts MAC disappear including MAC Breath.MAC message may include at least one of C-RNTI, BSR information or the ability of UE, wherein executing contention solution includes Processing circuit determines whether the parts MAC include C-RNTI.In some instances, message part can also include radio resource control The part (RRC) is made, the parts RRC include RRC information.RRC information may include the mark of UE.In some instances, message part It can also include common control channel (CCCH) sub-header.

Method 700 can also include, and at 720, listem-before-talk is executed on one or more channels of unlicensed spectrum (LBT) process.Method 700 can also include, and at 730, in response to clear channel assessment (CCA), coding is related to low latency RA processes The second message that the second of connection sends.Second message may include at least one of RAR or message 4.Second message can be through Include that uplink (UL) authorizes by physical downlink control channel (PDCCH) scheduling and/or second message.Show at some It, can be via by a scrambled down link control information in C-RNTI or random access RNTI (RA-RNTI) in example (DCI) second message PDSCH is dispatched.

In some instances, method 700 can also include being specified with for low latency RA processes based on PRACH lead codes One group of PRACH lead code comparison, to determine selections of the UE to low latency RA processes.In some instances, determination is prolonged to low The selection of slow RA processes may include determining selection based on the one group of time and/or frequency resource that are sent for first.One In a little examples, method 700 can also include being based on one or more of Master Information Block or system information block position, to indicate pair The selection of low latency RA processes.

Fig. 8 generally illustrates any one or more technology discussed in this article in accordance with some embodiments (for example, side Method) example of the block diagram of machine 800 that can execute on it.In alternative embodiments, machine 800 can be used as autonomous device It operates, or can be connected (e.g., networked) to other machines.In the deployment of networking, machine 800 can be in server- It is operated with the identity of server machine, client machine or the two in client network environment.In this example, machine 800 may be used as the peer machines in reciprocity (P2P) (or other are distributed) network environment.Machine 800 can be individual calculus Machine (PC), tablet PC, set-top box (STB), personal digital assistant (PDA), mobile phone, web appliance, network router, exchange Machine or bridge or be able to carry out the action for specifying the machine to be taken instruction (sequence or otherwise) arbitrary machine Device.Although in addition, illustrate only individual machine, term " machine " should also be considered as include machine arbitrary collection, these machines Device executes one group (or multigroup) instruction to execute any one or more of method discussed in this article, for example, cloud alone or in combination It calculates, software services (SaaS), the configuration of other computer clusters.

Example as described herein may include logic or multiple components, module or mechanism, or can be in logic or multiple It is operated in component, module or mechanism.Module is can to execute the tangible entity of specified operation in operation (for example, hard Part).Module includes hardware.In this example, hardware can be specifically configured to execute specific operation (for example, hardwired).Showing In example, hardware may include configurable execution unit (for example, transistor, circuit etc.) and computer-readable Jie including instruction Matter configures execution unit to execute specific operation in operation wherein instructing.Configuration can be in execution unit or load mechanism Guidance under carry out.Therefore, in equipment operation, execution unit is communicably coupled to computer-readable medium.In this example, Execution unit can be the member of more than one module.For example, under operation, execution unit can by first group of instruction configuration with The first module is realized at a time point, and is reconfigured by second group of instruction to realize the second module.

Machine (for example, computer system) 800 may include hardware processor 802 (for example, central processing unit (CPU), Graphics processing unit (GPU), hardware processor core or its arbitrary combine), main memory 804 and static memory 806, Some or all of which can communicate with one another via (for example, bus) 808 is interlinked.Machine 800 can also include Display unit 810, Alphanumeric Entry Device 812 (for example, keyboard) and user interface (UI) navigation equipment 814 (for example, Mouse).In this example, display unit 810, Alphanumeric Entry Device 812 and UI navigation equipments 814 can be touch screens Display.Machine 800 can also include storage device (for example, driving unit) 816, signal generation equipment 818 (for example, raising one's voice Device), network interface device 820 and one or more sensors 821, for example, global positioning system (GPS) sensor, sieve Disk, accelerometer or other sensors.Machine 800 may include o controller 828, for example, with one or more peripheral equipments (for example, printer, card reader etc.) is communicated or is controlled one or more peripheral equipments (for example, printer, card reader etc.) Serial (for example, universal serial bus (USB)), parallel or other are wired or wireless (for example, infrared (IR), near-field communication (NFC) etc.) connection.

Storage device 816 may include being stored with 824 (for example, softwares) of one or more groups of data structures or instruction above Non-transitory machine-readable media 822, one or more groups of data structures or instruction 824 embody in technique described herein or function Any one or more technologies or function or by any one or more technologies or work(in technique described herein or function It can utilize.Instruction 824 can also resides in completely or at least partially during being executed by machine 800 in main memory 804, In static memory 806 or in hardware processor 802.In this example, hardware processor 802, main memory 804, static storage One in device 806 or storage device 816 or arbitrary combination may be constructed machine readable media.

Although machine readable media 822 is shown as single medium, term " machine readable media " may include by Be configured to store one or more instructions 824 single media or multiple media (for example, centralized or distributed database and/ Or associated caching and server).

Term " machine readable media " may include can store, encode or carry the instruction executed by machine 800 and So that any one or more technologies in the technology of the execution disclosure of machine 800, or can store, encode or carry in this way Instruction used in or associated with such instruction data structure arbitrary medium.Non-limiting machine readable media shows Example may include solid-state memory and light and magnetic medium.In this example, large capacity machine readable media includes having multiple tools There is the machine readable media of the particle of constant (for example, static) quality.Therefore, large capacity machine readable media is not that transient state is propagated Signal.The specific example of large capacity machine readable media may include：Nonvolatile memory, for example, semiconductor memory is set Standby (for example, electrically programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM)) and flash store Device equipment；Disk, for example, internal hard drive and removable hard disk；Magneto-optic disk；And CD-ROM and DVD-ROM disks.

It can also be via the multiple transport protocols of utilization (for example, frame relay, Internet protocol (IP), transmission control protocol (TCP), User Datagram Protocol (UDP), hypertext transfer protocol (HTTP) etc.) in the network of any one transport protocol connect Jaws equipment 820 come using transmission medium come on communication network 826 send or receive instruction 824.Example communication network can wrap It includes：LAN (LAN), wide area network (WAN), packet data network (for example, internet), mobile telephone network are (for example, Cellular Networks Network), ordinary old style telephone (POTS) network and radio data network be (for example, be referred to asElectrical and Electronic work 802.11 family of standards of Association of Engineers (IEEE) is referred to as802.16 family of standards of IEEE), IEEE 802.15.4 Family of standards, equity (P2P) network etc..In this example, network interface device 820 may include one or more physical receptacles (for example, Ethernet, coaxial or telephone jack) or one or more antennas are to be connected to communication network 826.In this example, net Network interface equipment 820 may include mutiple antennas with use in following item at least one of carry out wireless communication：How defeated single input is Go out (SIMO), multiple-input and multiple-output (MIMO) or multiple input single output (MISO) technology.Term " transmission medium " should be considered as wrapping The arbitrary intangible medium of the instruction executed by machine 800 can be stored, encodes or carry by including, and include that number or simulation are logical Letter signal or other intangible mediums are to promote the communication of such software.

As used herein, term " circuit " can refer to lower list, can be the part of lower list or may include following ?：Application-specific integrated circuit (ASIC), electronic circuit, execute one or more softwares or firmware program (it is shared, dedicated, Or group) processor and/or (shared, dedicated or group) memory, combinational logic circuit, and/or offer Other hardware components appropriate of described function.In some embodiments, circuit can be in one or more softwares or solid It is realized in part module, or function associated with circuit can be realized by one or more softwares or firmware module.In some realities It applies in example, circuit may include at least partly operable logic within hardware.

In some embodiments, UE equipment 1000 may include add ons, for example, storage/memory, display Device, camera, sensor, and/or input/output (I/O) interface.

Additional information and example：

Example 1 is a kind of device of user equipment (UE), and device includes：Memory；And processing circuit, processing circuit are used In：Listem-before-talk (LBT) process is executed on one or more channels of unlicensed spectrum；And in response to clear channel assessment (CCA) (CCA), the associated with low latency random access (RA) process first first message sent is encoded in unlicensed spectrum, In, first message includes at least one of PRACH lead codes and message part, wherein message part includes cell radio At least one in Network Temporary Identifier (C-RNTI), buffer status reporting (BSR) information, the mark of the ability of UE, and/or UE It is a；And uplink (UL) mandate is received in response to being based on low latency RA processes, coding UL data are for transmission.

In example 2, the theme of example 1 optionally includes, wherein message part includes the portion medium access control (MAC) Point, MAC part include at least one MAC message, wherein MAC message include in C-RNTI, BSR information or the ability of UE extremely It is one few.

In example 3, the theme of example 2 optionally includes, wherein MAC message further includes the mark of UE.

In example 4, the exemplary themes of any of example 2-3 or multiple optionally include, wherein also wrap message part The part radio resource control (RRC) is included, the parts RRC include RRC information, wherein RRC information includes the mark of UE.

In example 5, the exemplary themes of any of example 2-4 or multiple optionally include, wherein the ability of UE includes One in layer 1UE abilities or MAC UE abilities.

In example 6, the exemplary themes of any of example 1-5 or multiple optionally include, wherein also wrap message part Include common control channel (CCCH) sub-header.

In example 7, the theme of example 6 optionally includes, wherein processing circuit is used for：In response in the first transmission It is not received by the UL sent based on first in predetermined time length afterwards to authorize, the second transmission is encoded in unlicensed spectrum Second message, wherein second message includes the 2nd PRACH lead codes and message part.

In example 8, the theme of example 7 optionally includes, wherein predetermined time length be based on absolute time, effectively under The counting of uplink subframe or MAC contentions solve one in timer.

In example 9, the exemplary themes of any of example 1-8 or multiple optionally include, wherein first sends use Physical uplink control channel (sPUCCH) waveform of shortening, wherein first part includes PRACH lead codes, and remaining Part includes message part.

In example 10, the theme of example 9 optionally includes, wherein and first part includes the first two symbol of message 3, And wherein, remainder is included in next two symbols after the first two symbol of message 3.

In example 11, the exemplary themes of any of example 1-10 or multiple optionally include, wherein first sends packet The one or more symbols transmission PRACH for including physical uplink control channel (sPUCCH) subframe shortened by first is leading Code, and message part is sent by the 2nd sPUCCH subframes.

In example 12, the exemplary themes of any of example 1-11 or multiple optionally include, wherein processing circuit is used In：It decodes and is sent in associated with low latency RA processes second dispatched via physical downlink control channel (PDCCH) In the second message that receives, wherein second message includes that physical down link sharing channel (PDSCH) is sent, and PDSCH is sent It is authorized including UL and includes that random access response or contention solve at least one of message.

In example 13, the theme of example 12 optionally includes, wherein the downlink for dispatching second message controls Information (DCI) is scrambled via one in C-RNTI or random access RNTI (RA-RNTI).

In example 14, the exemplary themes of any of example 1-13 or multiple optionally include, wherein processing circuit is sent out It is based on the instruction for receiving service eNode B (eNodeB) support low latency RA processes to play low latency RA processes.

In example 15, the theme of example 14 optionally includes, wherein processing circuit is used for：Based on from for low latency PRACH lead codes are selected in one group of specified PRACH lead code of RA processes, the choosing to low latency RA processes is indicated to eNodeB It selects.

In example 16, the exemplary themes of any of example 14-15 or multiple optionally include, wherein processing circuit For：It is exclusively used in the time and/or frequency resource that the PRACH lead codes of low latency RA processes are sent based on selection, to ENodeB indicates the selection to low latency RA processes.

In example 17, the exemplary themes of any of example 1-16 or multiple optionally include, wherein processing circuit is used In：Size in response to first message is more than the size distributed to single PRACH and interweaved, and coding first message is for multiple PRACH is sent on interweaving.

In example 18, the exemplary themes of any of example 1-17 or multiple optionally include, wherein processing circuit is used In：Coded message part for multiple PRACH intertexture on sent.

In example 19, the exemplary themes of any of example 1-18 or multiple optionally include, wherein processing circuit is used In：Size in response to first message is more than the size distributed to single PRACH and interweaved, to reduce the size of first message.

Example 20 is a kind of device of user equipment (UE), and device includes：Memory；And processing circuit, processing circuit For：Receive the instruction that service eNode B (eNodeB) supports low latency random access (RA) process and tradition RA processes；With And the first message that coding associated with low latency RA processes first is sent, first message includes PRACH lead codes and message Part.

In example 21, the theme of example 20 optionally includes, wherein processing circuit is used for：It is provided to service eNodeB Select the instruction of low latency RA processes.

In example 22, the theme of example 21 optionally includes, wherein provides selection low latency RA mistakes to service eNodeB The instruction of journey includes that processing circuit is used for：It is selected from the one group of PRACH lead code specified for low latency RA processes leading Code.

In example 23, the exemplary themes of any of example 21-22 or multiple optionally include, wherein to service The instruction that eNodeB provides selection low latency RA processes includes that processing circuit is used for：Selection for PRACH lead codes send when Between and/or frequency resource, wherein time and/or frequency resource are exclusively used in low latency RA processes.

In example 24, the theme of example 23 optionally includes, wherein processing circuit is used for：It is received from service eNodeB It is exclusively used in time and/or the frequency resource of the transmission of PRACH lead codes.

In example 25, the exemplary themes of any of example 20-24 or multiple optionally include, wherein processing circuit For：The instruction of the selection to low latency RA processes is received from service eNodeB.

In example 26, the theme of example 25 optionally includes, wherein is received from service eNodeB to low latency RA processes The instruction of selection include that processing circuit is used for：Based in system information block 2 (SIB2) or extension SIB2 (eSIB2) PRACH_ConfigIndex parameters, to determine the selection to low latency RA processes.

In example 27, the exemplary themes of any of example 25-26 or multiple optionally include, wherein from service ENodeB receptions include that processing circuit is used for the instruction of the selection of low latency RA processes：Based on system information block 2 (SIB2) or The PRACH configuration fields in SIB2 (eSIB2) are extended, to determine the selection to low latency RA processes.

In example 28, the exemplary themes of any of example 25-27 or multiple optionally include, wherein from service ENodeB receptions include that processing circuit is used for the instruction of the selection of low latency RA processes：Based on main information it is in the block one or The value of multiple reserved bits, to determine the selection to low latency RA processes.

In example 29, the exemplary themes of any of example 25-28 or multiple optionally include, wherein from service ENodeB receptions include that processing circuit is used for the instruction of the selection of low latency RA processes：Via radio resource control signaling To receive the selection to low latency RA processes.

Example 30 is a kind of device of evolution node B (eNodeB), and device includes：Memory；And processing circuit, processing Circuit is used for：Decoding is associated with low latency random access (RA) process in unlicensed spectrum from user equipment (UE) First send in the first message that receives, wherein first message include Physical Random Access Channel (PRACH) lead code and Message part, wherein message part includes Cell Radio Network Temporary Identity symbol (C-RNTI), buffer status reporting (BSR) At least one of the mark of information, the ability of UE or UE；It is executed on one or more channels of unlicensed spectrum after first listening Say (LBT) process；And in response to clear channel assessment (CCA), the second of coding the second transmission associated with low latency RA processes disappears Breath, wherein second message includes that random access response (RAR) or contention solve at least one of message, wherein second disappears Breath includes that uplink (UL) authorizes via physical downlink control channel (PDCCH) scheduling and/or second message.

In example 31, the theme of example 30 optionally includes, wherein message part includes medium access control (MAC) Part, the parts MAC include MAC message, wherein MAC message includes at least one in C-RNTI, BSR information or the ability of UE It is a.

In example 32, the theme of example 31 optionally includes, wherein message part further includes radio resource control (RRC) part, the parts RRC include RRC information, wherein RRC information includes the mark of UE.

In example 33, the exemplary themes of any of example 30-32 or multiple optionally include, wherein message part It further include common control channel (CCCH) sub-header.

In example 34, the exemplary themes of any of example 30-33 or multiple optionally include, wherein second message PDSCH is via by a scrambled down link control information (DCI) in C-RNTI or random access RNTI (RA-RNTI) Come what is dispatched.

In example 35, the exemplary themes of any of example 30-34 or multiple optionally include, wherein processing circuit For：The indication signaling of low latency RA processes is provided support for via radio resource control (RRC) signaling.

In example 36, the theme of example 35 optionally includes, wherein processing circuit is used for：Based on PRACH lead codes with For the comparison for one group of PRACH lead code that low latency PRACH processes are specified, to determine choosings of the UE to low latency PRACH processes It selects.

In example 37, the theme of example 36 optionally includes, wherein processing circuit is used for：Based on for the first transmission One group of time and/or frequency resource, to determine selections of the UE to low latency PRACH processes.

In example 38, the exemplary themes of any of example 36-37 or multiple optionally include, wherein processing circuit For：Corresponding frequencies resource and/or code domain are distributed into each UE in multiple UE, with allow the transmission from multiple UE into Row multiplexing.

In example 39, the exemplary themes of any of example 35-38 or multiple optionally include, wherein processing circuit For：By indicating the selection to low latency RA processes based on one or more of Master Information Block or system information block position.

In example 40, the exemplary themes of any of example 30-39 or multiple optionally include, wherein processing circuit For：Channel estimation is executed based on the first character subset of PRACH lead codes.

In example 41, the exemplary themes of any of example 30-40 or multiple optionally include, wherein processing circuit For：Channel estimation is executed based on the first character subset of PRACH lead codes.

In example 42, the exemplary themes of any of example 30-41 or multiple optionally include, wherein processing circuit For：It is held based on the PRACH lead codes of physical uplink control channel (sPUCCH) subframe transmission by previously having shortened Row channel estimation.

In example 43, the theme of example 42 optionally includes, wherein processing circuit is used for：Decoding is lacking demodulation ginseng Examine the UL subframe sent for message after the previous sPUCCH subframes of signal.

In example 44, the exemplary themes of any of example 30-43 or multiple optionally include, wherein processing circuit For：It is falsely detected in response to the message part of first message, is restored to traditional RA processes.

Example 45 is at least one machine readable media, including is used to execute physical accidental access letter in an unlicensed spectrum The instruction of road (PRACH) process, instruction make machine execute following operation when being executed by machine：At one of unlicensed spectrum Or listem-before-talk (LBT) process is executed on multiple channels；In response to clear channel assessment (CCA) (CCA), encoded in unlicensed spectrum Associated with low latency random access (RA) process first first message sent, wherein first message includes PRACH leading At least one of code and message part, wherein message part includes Cell Radio Network Temporary Identity symbol (C-RNTI), delays Rush state report (BSR) information, at least one of the mark of the ability of UE or UE；And in response to being based on low latency RA mistakes Journey receives uplink (UL) mandate, and coding UL data are for transmission.

In example 46, the theme of example 45 optionally includes, wherein message part includes medium access control (MAC) Part, the parts MAC include MAC message, wherein MAC message includes at least one in C-RNTI, BSR information or the ability of UE It is a.

In example 47, the theme of example 46 optionally includes, wherein MAC message further includes the mark of UE.

In example 48, the exemplary themes of any of example 46-47 or multiple optionally include, wherein message part Further include the part radio resource control (RRC), the parts RRC include RRC information, wherein RRC information includes the mark of UE.

In example 49, the exemplary themes of any of example 46-48 or multiple optionally include, wherein the ability of UE Including one in layer 1UE abilities or MAC UE abilities.

In example 50, the exemplary themes of any of example 45-49 or multiple optionally include, wherein message part It further include common control channel (CCCH) sub-header.

In example 51, the theme of example 50 optionally includes, instruction, when being executed by machine so that machine in response to It is not received by the UL sent based on first in predetermined time length after sending first to authorize, is compiled in unlicensed spectrum The second message that code second is sent, wherein second message includes the 2nd PRACH lead codes and message part.

In example 52, the theme of example 51 optionally includes, wherein predetermined time length be based on absolute time, effectively The counting of downlink subframe or MAC contentions solve one in timer.

In example 53, the exemplary themes of any of example 45-52 or multiple optionally include, wherein first sends Using physical uplink control channel (sPUCCH) waveform of shortening, wherein first part includes PRACH lead codes, and Remainder includes message part.

In example 54, the theme of example 53 optionally includes, wherein and first part includes the first two symbol of message 3, And wherein, remainder is included in next two symbols after the first two symbol of message 3.

In example 55, the exemplary themes of any of example 45-54 or multiple optionally include, instruction, by machine When execution so that machine decoding dispatched via physical downlink control channel (PDCCH) it is related to low latency RA processes The second message that the second of connection receives in sending, wherein second message includes physical down link sharing channel (PDSCH) hair It send, PDSCH transmissions include that UL is authorized and included that random access response or contention solve at least one of message.

In example 56, the theme of example 55 optionally includes, wherein the downlink for dispatching second message controls Information (DCI) is scrambled via one in C-RNTI or random access RNTI (RA-RNTI).

In example 57, the exemplary themes of any of example 45-56 or multiple optionally include, wherein first message It is to be encoded based on the instruction for receiving service eNode B (eNodeB) support low latency RA processes.

In example 58, the theme of example 57 optionally includes, instruction, when being executed by machine so that machine is based on choosing The time and/or frequency resource for being exclusively used in that the PRACH lead codes of low latency RA processes are sent are selected, to prolong to eNodeB instructions to low The selection of slow RA processes.

Example 59 is at least one machine readable media, including is used to execute physical accidental access letter in an unlicensed spectrum The instruction of road (PRACH) process is instructed when being executed by machine so that machine executes following operation：Receive service eNode B (eNodeB) instruction of low latency random access (RA) process and tradition RA processes is supported；And coding and low latency RA process phases Associated first first message sent, first message includes PRACH lead codes and message part.

In example 60, the theme of example 59 optionally includes, instruction, when being executed by machine so that machine is to service ENodeB provides the instruction of selection low latency RA processes.

In example 61, the theme of example 60 optionally includes, wherein provides selection low latency RA mistakes to service eNodeB The instruction of journey includes instruction, when being executed by machine so that machine is leading from the one group of PRACH specified for low latency RA processes Lead code is selected in code.

In example 62, the exemplary themes of any of example 60-61 or multiple optionally include, wherein to service The instruction that eNodeB provides selection low latency RA processes includes instruction, when being executed by machine so that machine choice is used for PRACH The time and/or frequency resource that lead code is sent, wherein time and/or frequency resource are exclusively used in low latency RA processes.

In example 63, the theme of example 62 optionally includes, instruction, when being executed by machine so that machine is from service ENodeB receives the time for being exclusively used in the transmission of PRACH lead codes and/or frequency resource.

In example 64, the exemplary themes of any of example 59-63 or multiple optionally include, instruction, by machine When execution so that machine receives the instruction of the selection to low latency RA processes from service eNodeB.

In example 65, the theme of example 64 optionally includes, wherein is received from service eNodeB to low latency RA processes Selection instruction include instruction, when being executed by machine so that machine be based on system information block 2 (SIB2) or extension SIB2 (eSIB2) the PRACH_ConfigIndex parameters in, to determine the selection to low latency RA processes.

In example 66, the exemplary themes of any of example 64-65 or multiple optionally include, wherein from service The instruction that eNodeB receives the selection to low latency RA processes includes instruction, when being executed by machine so that machine is based on system PRACH configuration fields in block of information 2 (SIB2) or extension SIB2 (eSIB2), to determine the selection to low latency RA processes.

In example 67, the exemplary themes of any of example 64-66 or multiple optionally include, wherein from service The instruction that eNodeB receives the selection to low latency RA processes includes instruction, when being executed by machine so that machine is based on main letter The value for ceasing one or more reserved bits in the block, to determine the selection to low latency RA processes.

In example 68, the exemplary themes of any of example 59-67 or multiple optionally include, wherein from service The instruction that eNodeB receives the selection to low latency RA processes includes instruction, when being executed by machine so that machine is via wireless Electric resources control signaling receives the selection to low latency RA processes.

Example 69 is at least one machine readable media, including is used to execute physical accidental access letter in an unlicensed spectrum The instruction of road (PRACH) process is instructed when being executed by machine so that machine executes following operation：Decoding comes from user equipment (UE) first received in the first transmission associated with low latency random access (RA) process in unlicensed spectrum Message, wherein first message includes PRACH lead codes and message part, wherein message part includes that cell-radio network is faced When identifier (C-RNTI), buffer status reporting (BSR) information, at least one of the mark of the ability of UE or UE；It is awarded non- It weighs and executes listem-before-talk (LBT) process on one or more channels of frequency spectrum；And in response to clear channel assessment (CCA), coding with it is low Postpone the second message that RA processes associated second are sent, wherein second message includes random access response (RAR) or strives With solving at least one of message, wherein second message dispatched via physical downlink control channel (PDCCH) and/or It is authorized including uplink (UL).

In example 70, the theme of example 69 optionally includes, wherein message part includes medium access control (MAC) Part, the parts MAC include MAC message, wherein MAC message includes at least one in C-RNTI, BSR information or the ability of UE It is a.

In example 71, the theme of example 70 optionally includes, wherein message part further includes radio resource control (RRC) part, the parts RRC include RRC information, wherein RRC information includes the mark of UE.

In example 72, the exemplary themes of any of example 69-71 or multiple optionally include, wherein message part It further include common control channel (CCCH) sub-header.

In example 73, the exemplary themes of any of example 69-72 or multiple optionally include, second message PDSCH It is to be adjusted via by a scrambled down link control information (DCI) in C-RNTI or random access RNTI (RA-RNTI) Degree.

In example 74, the exemplary themes of any of example 69-73 or multiple optionally include, instruction, by machine When execution so that machine is believed via radio resource control (RRC) signaling to provide support for the instruction of low latency RA processes It enables.

In example 75, the theme of example 74 optionally includes, instruction, when being executed by machine so that machine is based on The comparison of PRACH lead codes and the one group of PRACH lead code specified for low latency PRACH processes, to determine UE to low latency The selection of PRACH processes.

In example 76, the theme of example 75 optionally includes, instruction, when being executed by machine so that machine is based on using The one group of time sent in first and/or frequency resource, to determine selections of the UE to low latency PRACH processes.

In example 77, the exemplary themes of any of example 74-76 or multiple optionally include, instruction, by machine When execution so that machine based on one or more of Master Information Block or system information block position by being indicated to low latency RA mistakes The selection of journey.

Example 78 is a kind of equipment, which includes：For executing elder generation on one or more channels of unlicensed spectrum The device of (LBT) process is said after listening；For coding and low latency in response to clear channel assessment (CCA) (CCA) and in unlicensed spectrum The device for the first message that random access (RA) process associated first is sent, wherein first message includes PRACH lead codes At least one of with message part, wherein message part includes Cell Radio Network Temporary Identity symbol (C-RNTI), buffering State report (BSR) information, at least one of the mark of the ability of UE, and/or UE；And in response to being based on low latency RA processes receive uplink (UL) authorize and the device that encodes UL data for transmission.

In example 79, the theme of example 78 optionally includes, wherein message part includes medium access control (MAC) Part, the parts MAC include MAC message, wherein MAC message includes at least one in C-RNTI, BSR information or the ability of UE It is a.

In example 80, the theme of example 79 optionally includes, wherein MAC message further includes the mark of UE.

In example 81, the exemplary themes of any of example 79-80 or multiple optionally include, wherein message part Further include the part radio resource control (RRC), the parts RRC include RRC information, wherein RRC information includes the mark of UE.

In example 82, the exemplary themes of any of example 79-81 or multiple optionally include, wherein the ability of UE Including one in layer 1UE abilities or MAC UE abilities.

In example 83, the exemplary themes of any of example 78-82 or multiple optionally include, wherein message part It further include common control channel (CCCH) sub-header.

In example 84, the theme of example 83 optionally includes, in response to the predetermined time after being sent first The UL sent based on first is not received by length to authorize and encode the second message that second sends in unlicensed spectrum Device, wherein second message includes the 2nd PRACH lead codes and message part.

In example 85, the theme of example 84 optionally includes, wherein predetermined time length be based on absolute time, effectively The counting of downlink subframe or MAC contentions solve one in timer.

In example 86, the exemplary themes of any of example 78-85 or multiple optionally include, wherein first sends Using physical uplink control channel (sPUCCH) waveform of shortening, wherein first part includes PRACH lead codes, and Remainder includes message part.

In example 87, the theme of example 86 optionally includes, wherein and first part includes the first two symbol of message 3, And wherein, remainder is included in next two symbols after the first two symbol of message 3.

In example 88, the exemplary themes of any of example 78-87 or multiple optionally include, for decode via Second received in the second transmission associated with low latency RA processes of physical downlink control channel (PDCCH) scheduling The device of message, wherein second message includes that physical down link sharing channel (PDSCH) is sent, and PDSCH transmissions include that UL is awarded It weighs and includes that random access response or contention solve at least one of message.

In example 89, the theme of example 88 optionally includes, wherein the downlink for dispatching second message controls Information (DCI) is scrambled via one in C-RNTI or random access RNTI (RA-RNTI).

In example 90, the exemplary themes of any of example 78-89 or multiple optionally include, wherein first message It is to be encoded based on the instruction for receiving service eNode B (eNodeB) support low latency RA processes.

In example 91, the theme of example 90 optionally includes, for being exclusively used in low latency RA processes based on selection The time and/or frequency resource that PRACH lead codes are sent, to eNodeB instructions to the device of the selection of low latency RA processes.

Example 92 is a kind of equipment, which includes：For receive service eNode B (eNodeB) support low latency with Machine accesses the device of the instruction of (RA) process and tradition RA processes；And for encoding associated with low latency RA processes first The device of the first message of transmission, first message include PRACH lead codes and message part.

In example 93, the theme of example 92 optionally includes, for providing selection low latency RA mistakes to service eNodeB The device of the instruction of journey.

In example 94, the theme of example 93 optionally includes, wherein for providing selection low latency to service eNodeB The device of the instruction of RA processes further includes, for before being selected in the one group of PRACH lead code specified for low latency RA processes The device of leading code.

In example 95, the exemplary themes of any of example 93-94 or multiple optionally include, wherein are used for clothes The device that business eNodeB provides the instruction of selection low latency RA processes further includes being used for what PRACH lead codes were sent for selecting The device of time and/or frequency resource, wherein time and/or frequency resource are exclusively used in low latency RA processes.

In example 96, the theme of example 95 optionally includes, and PRACH lead codes are used for for being received from service eNodeB The time of transmission and/or the device of frequency resource.

In example 97, the exemplary themes of any of example 92-96 or multiple optionally include, and are used for from service ENodeB receives the device of the instruction of the selection to low latency RA processes.

In example 98, the theme of example 97 optionally includes, wherein for being received from service eNodeB to low latency RA The device of the instruction of the selection of process further includes, for based in system information block 2 (SIB2) or extension SIB2 (eSIB2) PRACH_ConfigIndex parameters, to determine the device of the selection to low latency RA processes.

In example 99, the exemplary themes of any of example 97-98 or multiple optionally include, wherein are used for from clothes Business eNodeB receptions further include to the device of the instruction of the selection of low latency RA processes, for being based on system information block 2 (SIB2) Or the PRACH configuration fields in SIB2 (eSIB2) are extended to determine the device of the selection to low latency RA processes.

In example 100, the exemplary themes of any of example 97-99 or multiple optionally include, wherein are used for from clothes Business eNodeB reception further includes to the device of the instruction of the selection of low latency RA processes, for based on main information it is in the block one or The value of multiple reserved bits determines the device of the selection to low latency RA processes.

In example 101, the exemplary themes of any of example 92-100 or multiple optionally include, wherein for from Service eNodeB receptions further include to the device of the instruction of the selection of low latency RA processes, for believing via radio resource control It enables to receive the device of selection low latency RA processes.

Example 102 is a kind of equipment, which includes：For decode come from user equipment (UE) in unlicensed spectrum Associated with low latency random access (RA) process first send in the device of first message that receives, wherein first Message includes PRACH lead codes and message part, wherein message part includes Cell Radio Network Temporary Identity symbol (C- RNTI), buffer status reporting (BSR) information, at least one of the mark of the ability of UE or UE；For in unlicensed spectrum One or more channels on execute listem-before-talk (LBT) process device；And for being compiled in response to clear channel assessment (CCA) The device for the second message that code associated with low latency RA processes second is sent, wherein second message includes that random access is rung (RAR) or contention is answered to solve at least one of message, wherein second message is via physical downlink control channel (PDCCH) it dispatches and/or is authorized including uplink (UL).

In example 103, the theme of example 102 optionally includes, wherein message part includes medium access control (MAC) part, MAC part include MAC message, wherein MAC message include in C-RNTI, BSR information or the ability of UE extremely It is one few.

In example 104, the theme of example 103 optionally includes, wherein message part further includes radio resource control (RRC) part, the parts RRC include RRC information, wherein RRC information includes the mark of UE.

In example 105, the exemplary themes of any of example 102-104 or multiple optionally include, wherein message portion It further includes common control channel (CCCH) sub-header to divide.

In example 106, the exemplary themes of any of example 102-105 or multiple optionally include, second message PDSCH is via by a scrambled down link control information (DCI) in C-RNTI or random access RNTI (RA-RNTI) Come what is dispatched.

In example 107, the exemplary themes of any of example 102-106 or multiple optionally include, for via nothing Line electric resources control (RRC) signaling to provide support for the device of the indication signaling of low latency RA processes.

In example 108, the theme of example 107 optionally includes, for being based on PRACH lead codes and being low latency RA mistakes The comparison of one group of PRACH lead code of Cheng Zhiding determines selected devices of the UE to low latency RA processes.

In example 109, the theme of example 108 optionally includes, for based on for first send one group of time and/ Or frequency resource determines selected devices of the UE to low latency PRACH processes.

In example 110, the exemplary themes of any of example 107-109 or multiple optionally include, for passing through base The device of the selection to low latency RA processes is indicated in one or more of Master Information Block or system information block position.

Foregoing detailed description includes the reference to attached drawing, these attached drawings constitute a part for detailed description.Attached drawing passes through The mode of diagram shows the specific embodiment that can be carried out.These embodiments are also referred to as " example " herein.It is this kind of Example may include the element in addition to the element that those are shown or described.However, it is also contemplated that including being shown or retouching The example for the element stated.In addition, being directed to the specific example (or in terms of one or more) of shown and described herein or being directed to Other examples (or in terms of one or more) of shown and described herein, it is also contemplated that be shown or described using those Any combinations of element (or in terms of one or more) or the example of arrangement.

Publication, patent and the patent document being previously mentioned in this document are all incorporated into herein by reference, Just look like to be incorporated into equally each by reference.If existed between file and this document those of being incorporated by reference Inconsistent usage is then the usage to this document by quoting the usage in (one or more) reference paper being incorporated into Supplement；For irreconcilable inconsistency, the usage be subject in this document.

In this document, as common in patent document, term "a" or "an" be used to include one or one More than a, this example or usage independently of any other "at least one" or " one or more ".In this document, unless separately Have an instruction, term "or" be used to refer to nonexcludability or, i.e. " A or B " include " A rather than B ", " B rather than A " and " A and B".In the appended claims, term " comprising " and the popular English for " wherein " being used as corresponding term "comprising" and " wherein " Equivalent in language.In addition, in the following claims, term " comprising " and "comprising" are open, that is, include in addition to that The system, equipment of the element except this kind of term element listed below, article or processing are still considered as falling into the power a bit In the protection domain that profit requires.In addition, in the following claims, term " first ", " second " and " third " etc. is used only as marking Number, and be not intended to imply the numeric sorting to their object.

Foregoing description is intended to be illustrative, rather than restrictive.For example, foregoing description example (or one Or many aspects) use can be combined with each other.After those of ordinary skill in the art read foregoing description, other realities can be used Apply example.Abstract is in order to enable reader quickly to determine property disclosed in technology, for example, so as to the 37C.F.R § 1.72 in accordance with the U.S. (b).Submitting for abstract is interpreted as being not used in explanation or limitation the scope of the claims or meaning.In addition, it is above-mentioned specifically In bright, various features can be grouped together to simplify the disclosure.However, claim not propose it is disclosed herein Each feature, as embodiment can characterize the subset of the feature.In addition, embodiment may include more public than specific example institute The few feature of the feature opened.Therefore, appended claims are incorporated into detailed description, wherein the conduct of each claim independence Individual embodiment exists.The range of embodiment disclosed herein with reference to appended claims and these claims enjoy etc. The full scope of jljl is determined together.

Claims

1. a kind of device of user equipment (UE), described device include：

Memory；And processing circuit, the processing circuit are used for：

Listem-before-talk (LBT) process is executed on one or more channels of unlicensed spectrum；

In response to clear channel assessment (CCA) (CCA), coding and low latency random access (RA) process phase in the unlicensed spectrum Associated first first message sent, wherein the first message includes at least one in PRACH lead codes and message part It is a, wherein the message part includes Cell Radio Network Temporary Identity symbol (C-RNTI), buffer status reporting (BSR) letter At least one of the mark of breath, the ability of the UE, and/or the UE；And

Uplink (UL) mandate is received in response to being based on the low latency RA processes, coding UL data are for transmission.

2. the apparatus according to claim 1, wherein the message part includes the part medium access control (MAC), described The parts MAC include at least one MAC message, wherein the MAC message includes the C-RNTI, the BSR information or described At least one of ability of UE.

3. the apparatus of claim 2, wherein the MAC message further includes the mark of the UE.

4. the apparatus of claim 2, wherein the message part further includes the part radio resource control (RRC), The parts RRC include RRC information, wherein the RRC information includes the mark of the UE.

5. the apparatus of claim 2, wherein the ability of the UE includes in layer 1UE abilities or MAC UE abilities One.

6. according to the device described in claim 1-5, wherein the message part further includes common control channel (CCCH) sub- report Head.

7. according to the device described in claim 1-5, wherein the processing circuit is used for：In response in first transmission It is not received by the UL sent based on described first in predetermined time length afterwards to authorize, is compiled in the unlicensed spectrum The second message that code second is sent, wherein the second message includes the 2nd PRACH lead codes and the message part.

8. device according to claim 7, wherein the predetermined time length is based on absolute time, active downlink The counting of subframe or MAC contentions solve one in timer.

9. the apparatus according to claim 1, wherein described first sends using the physical uplink control channel shortened (sPUCCH) waveform, wherein first part includes the PRACH lead codes, and remainder includes the message part.

10. device according to claim 9, wherein the first part includes the first two symbol of message 3, and its In, the remainder is included in next two symbols after the first two symbol of the message 3.

11. the apparatus according to claim 1, wherein first transmission includes the physical uplink chain shortened by first One or more symbols of road control channel (sPUCCH) subframe send the PRACH lead codes and by the 2nd sPUCCH Frame sends the message part.

12. the apparatus according to claim 1, wherein the processing circuit is used for：Decoding is via physical down link control The second message that associated with the low latency RA processes the second of channel (PDCCH) scheduling processed receives in sending, wherein The second message includes that physical down link sharing channel (PDSCH) is sent, and the PDSCH transmissions include that the UL is authorized simultaneously And include that random access response or contention solve at least one of message.

13. device according to claim 12, wherein the down link control information for dispatching the second message (DCI) it is scrambled via one in the C-RNTI or random access RNTI (RA-RNTI).

14. a kind of device of evolution node B (eNodeB), described device include：

Memory；And processing circuit, the processing circuit are used for：

Decoding from user equipment (UE) in unlicensed spectrum associated with low latency random access (RA) process the One send in the first message that receives, wherein the first message include Physical Random Access Channel (PRACH) lead code and Message part, wherein the message part includes Cell Radio Network Temporary Identity symbol (C-RNTI), buffer status reporting (BSR) information, at least one of the mark of the ability of the UE or the UE；

Listem-before-talk (LBT) process is executed on one or more channels of unlicensed spectrum；And

In response to clear channel assessment (CCA), the second message of coding the second transmission associated with the low latency RA processes, wherein The second message includes that random access response (RAR) or contention solve at least one of message, wherein described second disappears Breath includes that uplink (UL) authorizes via physical downlink control channel (PDCCH) scheduling and/or the second message.

15. device according to claim 14, wherein the processing circuit is used for：Pass through radio resource control (RRC) Signaling provides support for the indication signaling of low latency RA processes.

16. device according to claim 15, wherein the processing circuit is used for：Based on the PRACH lead codes and needle Comparison to one group of PRACH lead code that the low latency PRACH processes are specified, to determine the UE to the low latency The selection of PRACH processes.

17. device according to claim 16, wherein the processing circuit is used for：Based on what is sent for described first One group of time and/or frequency resource, to determine selections of the UE to the low latency PRACH processes.

18. device according to claim 16, wherein the processing circuit is used for：By corresponding frequencies resource and/or code Each UE in multiple UE is distributed in domain, to allow the transmission from the multiple UE to be multiplexed.

19. at least one machine readable media, including it is used to execute Physical Random Access Channel (PRACH) in an unlicensed spectrum The instruction of process, the instruction by machine when being executed so that the machine executes following operation：

Receive the instruction that service eNode B (eNodeB) supports low latency random access (RA) process and tradition RA processes；With And

The first message of coding the first transmission associated with the low latency RA processes, before the first message includes PRACH Leading code and message part.

20. at least one machine readable media according to claim 19 further includes instruction, when being executed by machine, makes It obtains the machine and the instruction for selecting the low latency RA processes is provided to the service eNodeB.

21. at least one machine readable media according to claim 20, wherein provide selection to the service eNodeB The instruction of the low latency RA processes includes instruction, and the instruction by machine when being executed so that the machine is from for described low Lead code is selected in one group of specified PRACH lead code of delay RA processes.

22. at least one machine readable media according to claim 20, wherein provide selection to the service eNodeB The instruction of the low latency RA processes includes instruction, and the instruction by machine when being executed so that the machine choice is used for PRACH The time and/or frequency resource that lead code is sent, wherein the time and/or frequency resource are exclusively used in the low latency RA mistakes Journey.

23. at least one machine readable media according to claim 19, further includes instruction, which executes by machine When so that the machine receives the instruction about the selection to the low latency RA processes from the service eNodeB.

24. at least one machine readable media according to claim 23, wherein from the service eNodeB receive about Instruction to the selection of the low latency RA processes includes instruction, and the instruction by machine when being executed so that the machine is based on PRACH_ConfigIndex parameters in system information block 2 (SIB2) or extension SIB2 (eSIB2) low are prolonged to determine to described The selection of slow RA processes.

25. at least one machine readable media according to claim 23, wherein from the service eNodeB receive about Instruction to the selection of the low latency RA processes includes instruction, and the instruction by machine when being executed so that the machine is based on PRACH configuration fields in system information block 2 (SIB2) or extension SIB2 (eSIB2), to determine to the low latency RA processes Selection.