CN108476532A - Listem-before-talk (LBT) failure during random access procedure - Google Patents

Abstract

User equipment (UE) is disclosed to be operable to execute the technology of Physical Random Access Channel (PRACH) process with eNodeB.UE can select the PRACH lead codes for being transferred to eNodeB during PRACH processes.UE can execute whether listem-before-talk (LBT) can be used with the unauthorized channel of determination.UE can detect the failures of the LBT at UE.LBT failures can indicate that unauthorized channel is not useable for sending PRACH lead codes during PRACH chances.UE can select new PRACH resources for follow-up PRACH chances.UE can be configured as executes PRACH preamble transmissions when UE does not fail by LBT during follow-up PRACH chances.

Description

Listem-before-talk (LBT) failure during random access procedure

Background technology

Wireless mobile telecommunication technology using various standards and agreement node (for example, transfer station) and wireless device (for example, Mobile device) between transmission data.Some wireless devices use orthogonal frequency division multiple access (OFDMA) in downlink (DL) transmission And it is communicated using single-carrier frequency division multiple access (SC-FDMA) in uplink (UL).Use orthogonal frequency division multiplexing (OFDM) carry out signal transmission standard and agreement include third generation partner program (3GPP) long term evolution (LTE) version 8, 9,10,11,12 and 13, Institute of Electrical and Electric Engineers (IEEE) 802.16 standard (for example, 802.16e, 802.16m) (its WiMAX (World Interoperability for Microwave Access, WiMax) is usually known as by industry) and 802.11 standards of IEEE (it is usually claimed by industry For WiFi).

In 3GPP radio access networks (RAN) LTE system (for example, version 13 and version earlier), node can be with Be Evolved Universal Terrestrial radio access network (E-UTRAN) node B (be also commonly referred to as evolution node B, enhancing node B, ENodeB or eNB) and radio network controller (RNC) combination, the node and wireless device (are referred to as user equipment (UE)) it communicates.Downlink (DL) transmission can be the communication from node (for example, eNodeB) to wireless device (for example, UE), And uplink (UL) transmission can be the communication from wireless device to node.

Description of the drawings

The feature and advantage of the disclosure will become prone to learn from the embodiment below in conjunction with attached drawing, this is specific Embodiment shows the feature of the disclosure jointly by way of example together with attached drawing；Also, wherein：

Fig. 1 is shown according to exemplary random access procedure；

Fig. 2 shows prevent user equipment (UE) leading to eNodeB transmissions during random access procedure according to exemplary Listem-before-talk (LBT) failure of code；

Fig. 3 is shown prevents eNodeB from being sent at random to user equipment (UE) according to exemplary during random access procedure Listem-before-talk (LBT) failure of access response；

Fig. 4 shows that preventing user equipment (UE) to be sent to eNodeB during random access procedure according to exemplary connects Listem-before-talk (LBT) failure of request message；

Fig. 5, which is shown, to be operable to execute Physical Random Access Channel with eNodeB according to exemplary user equipment (UE) (PRACH) function of process；

Fig. 6, which is shown, to be operable to execute Physical Random Access Channel with user equipment (UE) according to exemplary eNodeB (PRACH) function of process；

Fig. 7 show according to exemplary machine readable storage medium include on it in user equipment (UE) and The flow chart of the instruction of Physical Random Access Channel (PRACH) process is executed between eNodeB；

Fig. 8 shows the diagram according to exemplary wireless device (for example, UE) and base station (for example, eNodeB)；With

Fig. 9 shows the diagram according to exemplary wireless device (for example, UE).

Referring now to shown exemplary embodiment, and they will be described using language-specific herein.However It should be understood that therefore will not be intended to limit the range of the technology.

Specific implementation mode

Before disclosure and description this technology, it should be understood that the technology is not limited to specific structure disclosed herein, processing behaviour Work or material, but expand to this person of ordinary skill in the relevant and will be realized that its equivalent.It is also understood that herein The term of use is only used for the purpose of description specific example, and is not intended to limit.Difference the same reference numbers in the drawings refer to Identical element.Flow chart and the number provided in the process are provided for the purpose for illustrating the clear aspect for acting and operating , it might not indicate specific sequence or sequence.

Example embodiment

The preliminary general introduction of technical em- bodiments presented below, then specific technical em- bodiments retouched in more detail later It states.The preliminary general introduction is intended to that reader is helped quickly to understand technology, but is not intended to the key feature or substantive characteristics of identification technology, It is not intended to the range for limiting theme claimed.

The explosive growth of wireless flow results in the demand promoted to rate.However, since physical-layer techniques are very ripe, Therefore the further promotion of spectrum efficiency is very small.It is carried in addition, the scarcity of frequency spectrum is authorized to result in data rate in low-frequency band The deficiency risen.To produce the interest of the operation to LTE system in an unlicensed spectrum.In 3GPP LTE versions 13, one Kind enhancing is to assist the operation of access (LAA) realization in an unlicensed spectrum by authorizing.LAA can be carried by using flexible Wave polymerization (CA) frame carrys out expansion system bandwidth, as described in LTE- advanced systems (10 system of 3GPP LTE versions).Version This 13LAA lays particular emphasis on downlink (DL) design, and the enhanced LAA (or eLAA) of version 14 lays particular emphasis on uplink (UL) and sets Meter.The operation of the enhancing of LTE system in an unlicensed spectrum it is expected in the 5th generation (5G) wireless communication system.Show at one In example, the LTE operation in unlicensed spectrum can be realized using based on the LAA of dual link (DC).In the LAA based on DC, The anchor for being deployed in and authorizing in frequency spectrum can be used.In another example, version 14, which describes, to be come using MuLTEfire systems Realize the LTE operation in unauthorized system, this does not utilize the anchor authorized in frequency spectrum.MuLTEfire systems are can be unauthorized The independent LTE system operated in frequency spectrum.Therefore, eLAA the and MuLTEfire systems of version 14 are likely to become the following wireless network The major transformation of network.

In one example, the unlicensed band for the current interest of 3GPP system is 5 gigahertzs (GHz) frequency band, It includes the wide spectrum with global publicly available property.The 5GHz frequency bands in the U.S. are made by Federal Communications Commission (FCC) It is managed with unauthorized national information infrastructure (U-NII) rule.The main existing system of 5GHz frequency ranges is wireless office Domain net (WLAN), especially those systems based on IEEE 802.11a/n/ac technologies.Wlan system is wide by personal and operator It disposes generally, for carrier-class (carrier-grade) access service and load shedding.Therefore, in unlicensed spectrum Listem-before-talk (LBT) is the mandatory feature in version 13LAA systems, and the fair co-existence with existing system may be implemented.LBT The process for being transmitting set sensed media first and only just being sent when sensing medium clear.

In one configuration, following scene initiating random access procedure can be directed to：(from idle mode) initially connects Enter, (under connection mode) uplink (UL) scheduling request, (under connection mode) UL time alignments, (under connection mode) Switching or (under connection mode) radio resource control (RRC) connection reconstruction.

In mandate auxiliary access (LAA) system of version 12 and version 13, unauthorized cell is (that is, in unlicensed spectrum The cell of middle operation) it can only be used as supplementary cell (SCell) in an rrc-connected mode.In addition, unauthorized cell can only be used to Downlink DL transmission.Therefore, random access is not executed to unauthorized cell.In MuLTEfire systems, wherein unauthorized small Area can be main plot (PCell) and support UL in LAA, can be executed in unauthorized cell at random for above-mentioned scene Access.

As described herein, UE can be LTE UE or MuLTEfire UE or any UE operated in an unlicensed spectrum. In addition, as described herein, eNodeB can be LTE eNodeB or MuLTEfire eNodeB or operate in an unlicensed spectrum Any base station or network node.

Fig. 1 shows the example of the random access procedure between user equipment (UE) 110 and eNodeB 120.Random access Process may include four operations.In the first operation, UE 110 can send lead code to eNodeB 120.In the second operation In, eNodeB 120 can send random access response to UE 210.Random access response may include temporary cell radio Network Temporary Identifier (C-RNTI), timing advance value and uplink granting resources.In third operation, UE 110 can be to ENodeB 120 sends connection request message.Connection request message may include that Temporary Mobile Subscriber Identity (TMSI) and connection are built Vertical reason.In the 4th operation, eNodeB 120 can send contention to UE 210 and solve message.Contention, which solves message, to wrap It includes the new C-RNTI for the subsequent communications of UE 210.

In one example, before node (for example, UE 110 or eNodeB 120) accesses channel, node can pass through Monitor channel simultaneously determines whether channel is busy and executes LBT.When channel busy, node possibly can not access the channel.This is claimed Fail for LBT.On the other hand, when channel not busy, the no LBT failures of this expression, and node can execute biography on channel It is defeated.

In one configuration, about the first operation, due to the LBT failures at UE 110, UE 110 is possibly can not be next At Physical Random Access Channel (PRACH) chance preamble sequence is sent to eNodeB 120.Be described further below when due to The operation that LBT is executed when failing and cannot send lead code by UE 110.

About the second operation, due to the LBT failures at eNodeB 120, eNodeB 120 may be sent without normal direction UE 110 Response message (for example, random access response in LTE or LAA or MuLTEfire systems).Previous in LTE system, ENodeB 120 can send response message in random access window to UE 110, which can be in 1-10 millis In the range of second (ms).However, as will be described in further detail below, can change (as in LTE system previous) with Machine accesses window and is failed with adapting to the LBT at eNodeB 120.If unmodified random access window, even if eNodeB 120 Lead code is received from UE 110, UE 110 can also be weighed when eNodeB 120 fails to be responded in random access window It is new to start random access procedure.Therefore, RACH delays may increase, when this may increase switching and the interruption re-established Between.In addition, this may be generated due to the effect of the power ramping (power ramping) in follow-up preamble transmissions need not The UL interference wanted, and increase UE power consumptions.Therefore, as will be described in further detail below, random access window can be changed.

It is operated about third, due to the LBT failures at UE, UE can be skipped in the UL licenses dispatched by eNodeB to even Connect the transmission of request message (message 3).Connection request message cannot be sent and (disappear when due to LBT failures by being described further below The operation executed by UE when ceasing 3).

As described below, the performance about the random access procedure in LAA, eLAA and MuLTEfire can be defined on The LBT UE to be executed when failing operations and network operation.

Fig. 2 shows prevent user equipment (UE) 210 from sending lead code to eNodeB 220 during random access procedure The example of listem-before-talk (LBT) failure of (or preamble sequence).LBT failures can occur at UE 210, and therefore, UE 210 possibly can not be sent to lead code eNodeB 220.For example, UE 210 can execute LBT, and it is unauthorized detecting When channel busy, UE 210 can determine that LBT fails.UE 210 and eNodeB 220 can be included in LTE, LAA or In MuLTEfire systems.In addition, due to the LBT failures at UE 210, UE 210 possibly can not be accessed in subsequent physical accidental Lead code is sent at channel (PRACH) chance.

In one example, in the transmission for skipping lead code, UE 210 can again be selected for follow-up PRACH chances Select PRACH resources.UE 210 can reselect PRACH resources for follow-up PRACH chances so as to lead code and use Time and frequency resource randomization.In other words, if LBT failures occur at UE 210 during preamble transmissions, UE 210 can execute PRACH resource selections (for example, selecting new lead code and time and frequency resource for follow-up PRACH chances).In addition, when UE 210 select PRACH resources when, UE 210 can maintain send (Tx) power with prevent due to For unnecessary UL interference caused by the redundant power slope for the preamble transmissions skipped.In other words, UE 210 can To maintain to send (Tx) power, lead code is sent (that is, being skipped due to the LBT failures at UE 210 because being practically without Preamble transmissions).UE 210 can maintain to send (Tx) work(by executing power ramping (that is, not attempting counter incrementally) Rate.

Fig. 3 is shown prevents eNodeB 320 from being connect at random to the transmission of user equipment (UE) 310 during random access procedure Enter the example of listem-before-talk (LBT) failure of response.LBT failures can occur at eNodeB 320, and therefore, eNodeB 320 possibly can not be sent to random access response UE 310.For example, eNodeB 320 can execute LBT, and detecting When unauthorized channel busy, eNodeB 320 can determine that LBT fails.UE 310 and eNodeB 320 can be included in LTE, In LAA or MuLTEfire systems.

In existing LTE system, eNodeB 320 can be sent out in random access window (its range can be 1-10ms) Send random access response.However, when LBT failures occur at eNodeB 320, which may not be enough to ENodeB 320 responds UE310 with random access response.Stated differently, since the generation of LBT failures, random access window The length of mouth may not be enough to eNodeB 310 and send random access response when receiving lead code from UE 310.

In one configuration, it in order to determine whether eNodeB 320 receives lead code from UE 310, and considers Possible LBT failures at eNodeB 320, are described below three examples.

In the first example, it can extend or increase window size associated with random access window so that UE 310 Clearly it can determine whether eNodeB 320 has been received its lead code.In other words, window size can be extended or increase, So that eNodeB 320 has sufficient time to receive lead code, and in response, random access response is sent to UE 310.Due to the increase of window size, UE 310 can clearly determine that its preamble transmissions is success or failure.As non-limit Property example processed, window size can increase to 20ms from 10ms.Therefore can increase eNodeB 320 will be in random access The probability of random access response is sent in window.

In the second example, does not use instead of random access window as timer, identical window can be used big It is small, and random access window can serve as maximum counter.UE 310 can only believe being controlled in public physical down link It effective DL subframe for indicating in road (PDCCH) or is wherein sending and finds reference signal (DRS) or other control signalings The subframe of (for example, channel state information reference signals or CSI-RS) is counted.UE 310 can be only to these effective DL Frame is counted, and UE 310 can attempt detection random access response, can be in the downlink of PDCCH/ePDCCH It is indicated in control information (DCI) and carries out mask with random access radio network temporary identifier (RA-RNTI).Once UE 310 detect that the random access response with matched lead code ID, UE 310 can stop counter.If had reached most Big counter, then UE 310 is it is considered that eNodeB 320 is not received by lead code, and UE 310 can be executed again PRACH.In addition, these effective DL subframes are to include the subframe of DRS and other control signalings and data burst, such as public PDCCH Shown in.RA-RNTI can be time and the frequency of the PRACH resources for sending preamble sequence (in the first operation) The function of index.In second example, UE 310 can only count the DL subframe indicated by eNodeB 320, without It is simply to be counted to random access window (for example, from 1-10ms) (wherein each subframe is counted as one).

In third example, it can dynamically increase window based on the detection to effective DL subframe in random access window Mouth size.It can be based on dynamically increasing the window size of random access window to the reception of effective DL subframe.eNodeB 320 can dynamically to 310 notification window sizes of UE the busy extent of channel (this depend on), and can DL subframe it The information is indicated in one.UE 310 can detect eNodeB 320 whether in LBT using the transmission in DL subframe.In one kind In the case of, if do not transmitted in the DL subframe during the window period configured, window size can increase X ms, Middle X is configurable integer value.Window size can increase Y times in total, and wherein Y is configurable integer value.As unrestricted Property example, X can be between 1-10ms, and Y can be the integer value between 0 to 7.If in the window configured There is transmission in DL subframe during the mouth period, then UE 310 assume that the window size period expiration once being configured, then Preamble transmissions have failed.

Fig. 4 shows that preventing user equipment (UE) 410 to send connection to eNodeB 420 during random access procedure asks Seek the example of listem-before-talk (LBT) failure of message (message 3).LBT failures can occur at UE 410, and therefore, UE Connection request message (message 3) possibly can not be sent to eNodeB 420 by 410.For example, UE 410 can execute LBT, and When detecting unauthorized channel busy, UE 410 can determine that LBT fails.UE 410 and eNodeB 420 can be included in In LTE, LAA or MuLTEfire system.

In one example, due to the LBT failures at UE 410, UE 410, which can be skipped, to be dispatched by eNodeB 420 The transmission of connection request message (message 3) in UL licenses.When skipping UL licenses, UE 410 can start media access channel (MAC) contention solves timer.In addition, in order to reduce RACH delay, UE 410 can by control channel (for example, PDCCH/ePDCCH the matching temporary cell radio network temporary identifier of distribution of the monitoring in random access response in) (C-RNTI), come detect UL license whether used in another UE (due to lead code conflict).

In one example, UE 410 can be received has UL licenses, UL times for connection request message (message 3) The random access response of adjustment information and interim C-RNTI (or C-RNTI).It is directed to connection request message (message 3) receiving With UL licenses, UL times adjustment information and interim C-RNTI (or C-RNTI) random access response when, UE 410 can be with Handle the case where LBT permits to fail at UE 410 for UL.If LBT permits for the UL of connection request message (message 3) Fail at UE 410, then UE 410 can skip UL licenses.UE 410 can start MAC contentions and solve timer, and UE 410 may be used adaptive UL hybrid automatic repeat-requests (HARQ).

In one example, eNodeB 420 can be sent with the negative confirmation for retransmitting UL licenses for re-transmission (NACK), and UE 410 can attempt to send connection request message (message 3) using UL licenses are retransmitted.In such case Under, UE 410 can not be incremented by HARQ retransmission counters.In another example, when another RACH UE executeds transmission (for example, Lead code conflict) when or due to asynchronous HARQ, eNodeB 420 can not send with retransmit UL license NACK.In the example In, timer can be solved to solve the situation using MAC contentions, and can refresh harq buffer device when expired.In addition, UE 410 can attempt the DCI in detection PDCCH/ePDCCH, can carry out mask with interim C-RNTI.If detected DCI, then UE 410 can stop MAC contentions and solve timer and reattempt to RACH processes again, this, which can be used for reducing, prolongs Late.

In one example, after sending connection request message (message 3) from UE 410, MAC can be started (again) Contention solves timer.In addition, when receiving RRC connection setup complete messages (message 5), MAC contentions solve timer can To be extended to adapt to the LBT at eNodeB 420.

In one configuration, user equipment (UE) can be configured as in 3GPP LTE networks or MuLTEfire networks Operation.UE can execute random access uncontested or competition-based.When UE determines to send lead code to eNodeB, UE can be with Consider the listem-before-talk (LBT) at eNodeB or UE.When determining that eNodeB is based on receiving response message from eNodeB Not no when being successfully received lead code, the LBT at eNodeB or UE can be considered in UE.When UE disappears according in the response from eNodeB When the UL received in breath permits to attempt to send connection request message (message 3), UE can be considered at eNodeB or UE LBT。

In one example, when LBT fails for follow-up PRACH chances, UE can be skipped in follow-up PRACH chances Preamble transmissions.UE can be directed to follow-up PRACH chances and execute PRACH resources (for example, preamble sequence, time and frequency money Source) selection.In addition, UE can maintain to send (Tx) power.

In one example, UE can be disappeared based on response is received from eNodeB within the random access window time of extension It ceases (for example, accidental access response message in LTE), to determine successful preamble transmissions.

In one example, UE can be based on reaching configured largest random window meter in random access window counter Response message (for example, accidental access response message in LTE) is received from eNodeB before number, to determine successful lead code Transmission.Whenever determine an effective DL subframe (for example, DRS, PBCH/PSS/SSS, the DL subframe with DL data bursts, such as by Indicated by the public PDCCH that eNodeB is sent) when, counter can be incremented by 1.

In one example, UE can be disappeared based on response is received from eNodeB within the random access window time of extension It ceases (for example, accidental access response message in LTE), to determine successful preamble transmissions.UE can be based on whether random Effective DL subframe from eNodeB is detected dynamically to extend the random access window time in access window time.

In one example, if UE does not detect effective DL subframe during the random access window time, with Machine access window time can extend configurable Xms (for example, X=1 to 10ms), and can extend configurable time quantum Y (for example, Y=1 to 8ms).

In one example, as LBT at UE for the UL of connection request message (message 3) license failures when, UE can be with UL licenses are skipped, and even if UE skips UL licenses, UE can also start media access channel (MAC) contention and solve timer.

In one example, when UE, which is detected, permits the control signaling transmitted by the DL used in another UE for UL, UE can detect that contention solves failure.

It is operable to execute Physical Random Access Channel (PRACH) with eNodeB that another example provides user equipment (UE) The function 500 of process, as shown in Figure 5.UE may include memory and one or more processors.One or more processors It can be configured as：PRACH lead code of the selection for being transferred to eNodeB during PRACH processes at UE, in frame 510 It is shown.One or more processors can be configured as：Execute whether listem-before-talk (LBT) can be used with the unauthorized channel of determination, As shown in frame 520.One or more processors can be configured as：Detect the LBT failures at UE, wherein LBT unsuccessfully refers to Show that unauthorized channel is not useable for sending PRACH lead codes during PRACH chances, as shown in frame 530.At one or more Reason device can be configured as：New PRACH resources are selected to be used for follow-up PRACH chances at UE, wherein UE is configured as in UE PRACH preamble transmissions are executed when not failing by LBT during follow-up PRACH chances.As shown in frame 540.

It is operable to execute Physical Random Access Channel (PRACH) with user equipment (UE) that another example provides eNodeB The function 600 of process, as shown in Figure 6.ENodeB may include memory and one or more processors.At one or more Reason device can be configured as：It is determined at eNodeB and sends random access response to UE in random access window, in frame 610 It is shown.One or more processors can be configured as：Execute whether listem-before-talk (LBT) can be used with the unauthorized channel of determination, As indicated in block 620.One or more processors can be configured as：Detect that the LBT failures at eNodeB, wherein LBT are lost It loses the unauthorized channel of instruction to be not useable for sending random access response during PRACH chances, as indicated in block 630.One or Multiple processors can be configured as：At eNodeB handle random access response, with when eNodeB does not fail by LBT simultaneously And random access response is sent to UE during random access window, as shown in frame 640.

Another example provides at least one machine readable storage medium, have thereon in user equipment (UE) and The instruction 700 of Physical Random Access Channel (PRACH) process is executed between eNodeB, as shown in Figure 7.Instruction can be on machine It executes, wherein instruction is included at least one computer-readable medium or a non-transient machine readable storage medium.Refer to It enables and executes following operation when executed：Determine that sending radio resource control (RRC) connection request to eNodeB disappears at UE Breath, the wherein RRC connection request message are to permit via the uplink from eNodeB to dispatch, as indicated in block 710. Instruction executes following operation when executed：Execute whether listem-before-talk (LBT) can be used with the unauthorized channel of determination, such as frame 720 Shown in.Instruction executes following operation when being executed：Detect that the LBT failures at UE, wherein LBT unsuccessfully indicate unauthorized channel It is not useable for sending RRC connection request message during the uplink license that eNodeB is dispatched, as indicated in block 730.Instruction Following operation is executed when executed：Decode the negative confirmation with re-transmission uplink license received from eNodeB (NACK), as indicated in block 740.Instruction executes following operation when executed：At UE handle RRC connection request message with It is sent to eNodeB using re-transmission uplink license when UE does not fail by LBT, as shown in frame 750.

Fig. 8 provides the example illustration of user equipment (UE) equipment 800 and node 820.UE equipment 800 may include wireless Equipment, movement station (MS), mobile wireless device, mobile communication equipment, tablet computer, handheld device or other kinds of Wireless device.UE equipment 800 may include one or more antennas, and one or more of antennas are configured as and node 820 Or transfer station (such as base station (BS), evolution node B (eNB), Base Band Unit (BBU), long distance wireless dateline (RRH), long distance wireless Electric equipment (RRE), relay station (RS), wireless device (RE), remote radio unit (RRU), central processing module (CPM), Or other kinds of wireless wide area network (WWAN) access point) communicated.Node 820 may include one or more processors 822, memory 824 and transceiver 826.It includes 3GPP LTE, WiMAX, high-speed packet that UE equipment 800, which can be configured as and use, At least one wireless communication standard of access (HSPA), Bluetooth and WiFi etc are communicated.UE equipment 800 can be with needle Each wireless communication standard is communicated using individual antenna, or shared day is used for multiple wireless communication standards Line is communicated.UE equipment 800 can in WLAN (WLAN), wireless personal-area network (WPAN) and/or WWAN into Row communication.

In some embodiments, UE equipment 800 may include the application circuit being at least coupled together as shown in figure 802, baseband circuit 804, radio frequency (RF) circuit 806, front-end module (FEM) circuit 808 and one or more antennas 810.This Outside, node 820 may include electric with for application circuit similar described in UE equipment 800, baseband circuit, radio frequency (RF) Road, front-end module (FEM) circuit and one or more antennas.

Application circuit 802 may include one or more application processor.For example, application circuit 802 may include such as But it is not limited to the circuit of one or more single or multiple core processors.(one or more) processor may include general processor With any combinations of application specific processor (for example, graphics processor, application processor etc.).Processor can couple and/or can be with Including storage medium, and the instruction for executing and being stored in a storage medium is can be configured as, to realize various applications and/or behaviour Make system to be run in system.

Baseband circuit 804 may include the circuit of such as, but not limited to one or more single or multiple core processors.Base band Circuit 804 may include one or more baseband processor and/or control logic, to handle the reception signal from RF circuits 806 The baseband signal that path receives, and generate the baseband signal of the transmission signal path for RF circuits 806.Base-Band Processing electricity Road 804 can be with 802 interface of application circuit, the operation for generating and handling baseband signal and for controlling RF circuits 806. For example, in some embodiments, baseband circuit 804 may include the second generation (2G) baseband processor 804a, the third generation (3G) base Provided with processor 804b, forth generation (4G) baseband processor 804c and/or for other existing generations, developing or future will (one or more) other baseband processor 804d of the generation (for example, the 5th generation (5G), 6G etc.) of exploitation.Baseband circuit 804 (for example, one or more baseband processor 804a-d), which can be handled, can realize through RF circuits 806 and one or more nothings The various radio control functions that line electric network is communicated.Radio control functions can include but is not limited to signal modulation/ Demodulation, coding/decoding, radio frequency displacement etc..In some embodiments, the modulation/demodulation circuit of baseband circuit 804 may include Fast Fourier Transform (FFT) (FFT), precoding and/or constellation mapping/demapping function.In some embodiments, baseband circuit 804 Coding/decoding circuit may include that convolution, tail biting convolution, turbo, Viterbi and/or low-density checksum (LDPC) are compiled Code device/decoder function.The embodiment of modulating/demodulating and coder/decoder functionalities is not limited to these examples, and at other May include other suitable functions in embodiment.

In some embodiments, baseband circuit 804 may include the element of protocol stack, such as the general land of evolution is wireless It is electrically accessed the element of network (EUTRAN) agreement, such as including physics (PHY), M AC (MAC), radio link Control (RLC), Packet Data Convergence Protocol (PDCP) and/or radio resource control (RRC) element.In baseband circuit 804 Central Processing Unit (CPU) 804e can be configured as agreement of the operation for the signaling of PHY, MAC, RLC, PDCP and/or rrc layer The element of stack.In some embodiments, baseband circuit may include one or more audio digital signal processors (DSP) 804f.(one or more) audio DSP 804f may include the element for compression/de-compression and echo cancellor, and at it May include other suitable processing elements in his embodiment.In some embodiments, the component of baseband circuit can be suitably Combination in one single chip, in one single chip group or be arranged on identical circuit board.In some embodiments, baseband circuit 804 and some or all of the composition component of application circuit 802 can be achieved in such as system on chip (SOC).

In some embodiments, baseband circuit 804 can provide the communication compatible with one or more radiotechnics.Example Such as, in some embodiments, baseband circuit 804 can be supported and the universal terrestrial radio of evolution access network (EUTRAN) And/or the communication of other wireless MANs (WMAN), WLAN (WLAN), wireless personal domain network (WPAN).Base band Circuit 804 is configured as supporting the embodiment of the radio communication of more than one wireless protocols that can be referred to as multi-mode base band electricity Road.

RF circuits 806 can be realized using the modulated electromagnetic radiation by non-solid medium come logical with wireless network Letter.In various embodiments, RF circuits 806 may include switch, filter, amplifier etc., logical with wireless network to assist Letter.RF circuits 806 may include receiving signal path, may include for being carried out to the RF signals received from FEM circuits 808 Down coversion and the circuit that baseband signal is provided to baseband circuit 804.RF circuits 806 can also include sending signal path, should It includes carrying out up-conversion to the baseband signal provided from baseband circuit 804 and providing RF to FEM circuits 808 to send signal path The circuit that output signal is used for transmission.

In some embodiments, RF circuits 806 may include receiving signal path and transmission signal path.RF circuits 806 Reception signal path may include mixer 806a, amplifier circuit 806b and filter circuit 806c.RF circuits 806 Transmission signal path may include filter circuit 806c and mixer 806a.RF circuits 806 can also include synthesis Device circuit 806d is used for frequency synthesis for receiving signal path and sending the mixer 806a of signal path. In some embodiments, the mixer 806a for receiving signal path can be configured as based on being provided by condensating synthesizering circuit 806d Frequency synthesis, down coversion is carried out to the RF signals that are received from FEM circuits 808.Amplifier circuit 806b can be configured as Amplify downconverted signal, and filter circuit 806c can be low-pass filter (LPF) or bandpass filter (BPF), It is configured as removing unwanted signal from down-conversion signal to generate output baseband signal.It can be to baseband circuit 804 Output baseband signal is provided for being further processed.In some embodiments, output baseband signal can be zero-frequency base band letter Number, although it's not necessary.In some embodiments, the mixer 806a for receiving signal path may include passive mixed Frequency device, although the scope of embodiment is unrestricted in this regard.

In some embodiments, the mixer 806a for sending signal path can be configured as based on by synthesizer electricity The frequency synthesis that road 806d is provided carries out up-conversion to input baseband signal, and the RF with generation for FEM circuits 808 exports letter Number.Baseband signal can be provided by baseband circuit 804 and can be filtered by filter circuit 806c.Filter circuit 806c can To include low-pass filter (LPF), although the scope of embodiment is unrestricted in this regard.

In some embodiments, it receives the mixer 806a of signal path and sends the mixer of signal path 806a may include two or more frequency mixers, and can be respectively arranged for quadrature frequency conversion and/or up-conversion.At some In embodiment, it may include two to receive the mixer 806a of signal path and send the mixer 806a of signal path A or more frequency mixer, and mirror image can be arranged to and inhibited (for example, Hartley mirror images inhibit).In some embodiments In, the mixer 806a for receiving signal path and the mixer 806a for sending signal path can be respectively arranged and be used for Direct-conversion and/or Direct conversion.In some embodiments, it receives the mixer 806a of signal path and sends and believe The mixer 806a in number path can be configured for superheterodyne operation.

In some embodiments, output baseband signal and input baseband signal can be analog baseband signals, although implementing The range of example is unrestricted in this regard.In some alternative embodiments, output baseband signal and input baseband signal can be with It is digital baseband signal.In these alternative embodiments, RF circuits 806 may include that analog-digital converter (ADC) and digital-to-analogue turn Parallel operation (DAC) circuit, and baseband circuit 804 may include the digital baseband interface for being communicated with RF circuits 806.

In some bimodulus embodiments, signal of the individual radio IC circuits for handling each frequency spectrum can be provided, Although the scope of embodiment is unrestricted in this regard.

In some embodiments, condensating synthesizering circuit 806d can be score-N (fractional-N) synthesizers or score N/ N+1 synthesizers, although the scope of embodiment is unrestricted in this regard, because other types of frequency synthesizer may be suitable 's.For example, condensating synthesizering circuit 806d can be increment summation (delta-sigma) synthesizer, frequency multiplier or be divided including having The synthesizer of the phaselocked loop of device.

Condensating synthesizering circuit 806d, which can be configured as, to be synthesized based on frequency input and frequency divider control input for RF circuits The output frequency that 806 mixer 806a is used.In some embodiments, condensating synthesizering circuit 806d can be score N/N+ 1 synthesizer.

In some embodiments, frequency input can be provided by voltage controlled oscillator (VCO), although it's not necessary.It takes Certainly in desired output frequency, frequency divider control input can be provided by baseband circuit 804 or application processor 802.At some In embodiment, can based on the channel indicated by application processor 802, from look-up table come determine frequency divider control input (for example, N)。

The condensating synthesizering circuit 806d of RF circuits 806 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 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 allotment ratio (fractional division ratio).At some In exemplary embodiment, DLL may include that one group of cascade tunable delay component, phase detectors, charge pump and D types touch Hair.In these embodiments, delay element, which can be configured as, is grouped VCO Periodic decompositions at Nd equal phases, wherein Nd is the quantity of the delay element in delay line.In this way, DLL provides negative-feedback to assist in ensuring that through the total of delay line Delay is a VCO period.

In some embodiments, condensating synthesizering circuit 806d, which can be configured as, generates carrier frequency as output frequency, and In other embodiments, output frequency can be carrier frequency multiple (for example, twice of carrier frequency, carrier frequency four Times) and quadrature generator and divider circuit is combined to use, with carrier frequency generate relative to each other have it is multiple not Multiple signals of same-phase.In some embodiments, output frequency can be LO frequencies (f_LO).In some embodiments, RF electricity Road 806 may include IQ/ polarity switch.

FEM circuits 808 may include receiving signal path, which may include being configured as to from one Or the RF signals that mutiple antennas 810 receives are operated, amplify the signal received and by the amplification of the signal received Version provides the circuit to RF circuits 806 for further processing.FEM circuits 808 can also include sending signal path, the hair It may include being configured as amplifying the signal being used for transmission provided by RF circuits 806 for one or more days to send signal path The circuit that one or more of line 810 antenna is transmitted.

In some embodiments, FEM circuits 808 may include TX/RX converters in sending mode and reception pattern behaviour It is switched between work.FEM circuits may include receiving signal path and transmission signal path.The reception signal road of FEM circuits Diameter may include low-noise amplifier (LNA) using amplify the RF signals received and provide enlarged reception RF signals as Output (for example, arriving RF circuits 806).The transmission signal path of FEM circuits 808 may include for amplifying (for example, by RF circuits 806 provide) power amplifier (PA) of input rf signal, and for generating RF signals so that subsequent transmission is (for example, by one One or more of a or mutiple antennas 810 antenna transmission) one or more filters.

Fig. 9 provides such as user equipment (UE), movement station (MS), mobile wireless device, mobile communication equipment, tablet electricity The exemplary diagram of the wireless device of brain, handheld device or other kinds of wireless device etc.Wireless device may include by It is configured to the one or more antennas communicated with following item：Node, grand node, low power nodes (LPN) or transfer station (for example, base station, evolution node B (eNB), baseband processing unit (BBU), long distance wireless dateline (RRH), remote radio devices (RRE), relay station (RS), wireless device (RE) or other kinds of wireless wide area network (WWAN) access point).Wireless device It can be configured as and communicated using at least one wireless communication standard, at least one wireless communication standard is such as, but not limited to 3GPP LTE, WiMAX, high-speed packet access (HSPA), Bluetooth and WiFi.Wireless device can be directed to each channel radio Beacon standard is carried out communication using individual antenna or is communicated using shared antenna for multiple wireless communication standards.Nothing Line equipment can communicate in WLAN (WLAN), wireless personal-area network (WPAN), and/or WWAN.Wirelessly set Standby can also include radio modem.Radio modem may include such as wireless radio transceiver and base band electricity Road (for example, baseband processor).In one example, radio modem can pass through one or more days to wireless device The signal that line is sent is modulated, and is demodulated by one or more antenna received signals to wireless device.

Fig. 9 also provides the microphone that can be used for audio input and output from wireless device and one or more is raised one's voice The diagram of device.Display screen can be liquid crystal display (LCD) screen or other types of display screen, such as Organic Light Emitting Diode (OLED) display.Display screen is configurable to touch screen.Touch screen can use capacitance, resistance or other kinds of touch screen Technology.Application processor and graphics processor can be couple to internal storage to provide the ability of processing and display.It is non-volatile Property port memory can also be used to provide a user data input/output option.Nonvolatile memory port can be also used for The memory capabilities of extended wireless device.Keyboard can be integrated with wireless device, or is connected wirelessly to wireless device to provide Additional user's input.It can also be using touch screen to provide dummy keyboard.

Example

Following embodiment is related to particular technique embodiment, and point out can to use when realizing these embodiments Or specific features, element or the action otherwise combined.

Example 1 includes that one kind is operable to be set with the user for executing Physical Random Access Channel (PRACH) process with eNodeB The device of standby (UE), the device include：Memory；And one or more processors, it is used for：PRACH lead codes are selected at UE For being transmitted to eNodeB during PRACH processes；Execute whether listem-before-talk (LBT) can be used with the unauthorized channel of determination； Detect that the LBT failures at UE, wherein LBT unsuccessfully indicate that unauthorized channel is not useable for sending PRACH during PRACH chances Lead code；And select new PRACH resources to be used for follow-up PRACH chances at UE, wherein UE be configured as UE not by PRACH preamble transmissions are executed when LBT fails during follow-up PRACH chances.

Example 2 includes the device of example 1, further includes：Transceiver is configured as PRACH during follow-up PRACH chances Lead code is sent to eNodeB.

Example 3 includes the device of example 1 to 2, wherein one or more processors are configured as sending out during following one Play PRACH processes：Initial access from idle mode, the uplink scheduling request under connection mode, under connection mode Uplink temporal is aligned, the switching under connection mode or radio resource control (RRC) connection reconstruction under connection mode.

Example 4 includes the device of any example in example 1 to 3, wherein one or more processors are configured as detecting The transmission power at UE is maintained after to LBT failures, to prevent the uplink caused by redundant power slope at UE Interference.

Example 5 includes the device of any example in example 1 to 4, wherein it is new that one or more processors are configured as selection PRACH resources are used for follow-up PRACH chances, so that the time used at PRACH lead codes and UE and frequency resource randomization.

Example 6 includes the device of any example in example 1 to 5, and wherein UE is configured for MuLTEfire or authorizes auxiliary It accesses (LAA).

Example 7 can be used to execute Physical Random Access Channel (PRACH) process with user equipment (UE) including one kind ENodeB device, which includes：Memory；And one or more processors, it is configured as：It is determined at eNodeB In response to receiving PRACH lead codes from UE and sending random access response to UE in random access window；Execution is first listened Say whether (LBT) can be used with the unauthorized channel of determination afterwards；Detect that the LBT failures at eNodeB, wherein LBT unsuccessfully indicate non-award Power channel is not useable for sending random access response during PRACH chances；And random access response is handled at eNodeB For being transferred to UE when eNodeB does not fail by LBT and during random access window.

Example 8 includes the device of example 7, further includes：Transceiver is configured as sending to UE during random access window Random access response.

Example 9 includes the device of any example in example 7 to 8, wherein one or more processors are additionally configured to：Expand Random access window is opened up so that UE can be in random access window from eNodeB receiving random access responses, and to connecing at random The transmission for entering response is delayed by due to the LBT failures at eNodeB in random access window.

Example 10 includes the device of any example in example 7 to 9, and wherein random access window is used as counter, wherein Active downlink subframe is counted during random access window, and the counter is detecting random access sound It is seasonable to stop.

Example 11 includes the device of any example in example 7 to 10, and wherein active downlink subframe includes with as follows The subframe of item：It was found that reference signal (DRS), Physical Broadcast Channel (PBCH) signal, primary synchronization signal (PSS), secondary synchronization signal (SSS), institute in the public physical downlink control channel (PDCCH) that downlink data burst or the eNodeB are sent Other control signalings indicated.

Example 12 includes the device of any example in example 7 to 11, wherein one or more processors are additionally configured to： Dynamically configure the size of random access window, wherein wherein, random access window is based in random access window in UE Place detects active downlink subframe and is configured dynamically；And it is provided to UE to random during downlink subframe Access the instruction of the size of window.

Example 13 includes the device of any example in example 7 to 12, wherein one or more processors are additionally configured to： When active downlink subframe is not detected in UE in random access window, by the size expanded definition of random access window Period, and the size of random access window can be with the number of expanded definition.

Example 14 includes the device of any example in example 7 to 13, and wherein eNodeB is configured for MuLTEfire or awards Power auxiliary access (LAA).

Example 15 includes at least one machine readable storage medium, includes in user equipment (UE) and eNodeB thereon Between execute the instruction of Physical Random Access Channel (PRACH) process, which holds by the one or more processors of UE Following operation is executed when row：It is determined to eNodeB at UE and sends radio resource control (RRC) connection request message, wherein RRC connection request message is dispatched via permitting come the uplink of eNodeB naturally；Listem-before-talk (LBT) is executed with true Whether fixed unauthorized channel can be used；Detect that the LBT failures at UE, wherein LBT unsuccessfully indicate that unauthorized channel is not useable for RRC connection request message is sent during uplink license by eNodeB scheduling；What decoding was received from eNodeB has re-transmission The negative confirmation (NACK) of uplink license；RRC connection request message is handled at UE to make when UE does not fail by LBT With re-transmission uplink allowed transport to eNodeB.

Example 16 includes at least one machine readable storage medium of example 15, further includes executing following behaviour upon being performed The instruction of work：When UE skips the uplink license dispatched by eNodeB due to the LBT failures at UE, start medium access It controls (MAC) contention and solves timer.

Example 17 includes at least one machine readable storage medium of any example in example 15 to 16, further includes working as to be held The following instruction operated is executed when row：It determines and attempts to ask to eNodeB transmission RRC connections on retransmitting uplink license in UE Message is asked not to be incremented by hybrid automatic repeat-request (HARQ) retransmission counter later.

Example 18 includes at least one machine readable storage medium of any example in example 15 to 17, further includes working as to be held The following instruction operated is executed when row：It detects in physical downlink control channel (PDCCH) or enhanced PDCCH (ePDCCH) Down link control information (DCI)；Stop medium access control (MAC) contention when detecting DCI and solves timer；Lay equal stress on It is new to start PRACH processes.

Example 19 includes at least one machine readable storage medium of any example in example 15 to 18, wherein medium access Control (MAC) contention solves timer and is extended to that UE is made to adapt to the rear to eNodeB transmissions RRC of the LBT failures at eNodeB Connection setup complete message.

Example 20 includes at least one machine readable storage medium of any example in example 15 to 19, further includes working as to be held The following instruction operated is executed when row：Uplink license is retransmitted by RRC connection request when being used when UE does not fail by LBT When message is sent to eNodeB, starts medium access control (MAC) contention and solve timer.

Example 21 includes at least one machine readable storage medium of any example in example 15 to 20, further includes working as to be held The following instruction operated is executed when row：By in physical downlink control channel (PDCCH) or enhanced PDCCH (ePDCCH) Matching temporary cell radio network temporary identifier (C- of the middle monitoring from the distribution in the random access response that eNodeB is received RNTI), permit whether used by the 2nd UE by lead code conflict to detect uplink.

Example 22 includes at least one machine readable storage medium of any example in example 15 to 21, and wherein UE is configured For MuLTEfire or authorize auxiliary access (LAA).

Example 23 includes that one kind is operable to be set with the user for executing Physical Random Access Channel (PRACH) process with eNodeB Standby (UE), the UE include：For determining the dress for sending radio resource control (RRC) connection request message to eNodeB at UE It sets, wherein RRC connection request message is permitted via the uplink from eNodeB to dispatch；After first being listened for execution Say (LBT) with the whether available device of the unauthorized channel of determination；Device for detecting the LBT failures at UE, wherein LBT loses Instruction unauthorized channel during the uplink license that eNodeB is dispatched is lost to be not useable for sending RRC connection request message；With In the device with the negative confirmation (NACK) for retransmitting uplink license that decoding is received from eNodeB；And at UE Processing RRC connection request message when UE does not fail by LBT using re-transmission uplink allowed transport to eNodeB to be filled It sets.

Example 24 includes the UE of example 23, further includes：For being skipped by eNodeB tune due to the LBT failures at UE as UE Start the device that medium access control (MAC) contention solves timer when the uplink license of degree.

Example 25 includes the UE of any example in example 23 to 24, further includes：It attempts retransmitting uplink in UE for determining It is not incremented by hybrid automatic repeat-request (HARQ) re-transmission after sending RRC connection request message to eNodeB in link license to count The device of device.

Example 26 includes the UE of any example in example 23 to 25, further includes：For detecting physical down link control letter The device in road (PDCCH) or the down link control information (DCI) in enhanced PDCCH (ePDCCH)；For detecting DCI When stop medium access control (MAC) contention solve timer device；And the device for restarting PRACH processes.

Example 27 includes the UE of any example in example 23 to 26, wherein medium access control (MAC) contention solves timing Device is extended to that UE is made to adapt to the rear to eNodeB transmission RRC connection setup complete messages of the LBT failures at eNodeB.

Example 28 includes the UE of any example in example 23 to 27, further includes：For when making when UE does not fail by LBT When RRC connection request message being sent to eNodeB with re-transmission uplink license, start medium access control (MAC) contention solution The certainly device of timer.

Example 29 includes the UE of any example in example 23 to 28, further includes：For by being controlled in physical down link Channel (PDCCH) or the middle matchings monitored from the distribution in the random access response that eNodeB is received of enhancing PDCCH (ePDCCH) Temporary cell radio network temporary identifier (C-RNTI) come detect uplink license whether due to lead code conflict and by Device used in 2nd UE.

Example 30 includes the UE of any example in example 23 to 29, and wherein UE is configured for MuLTEfire or authorizes auxiliary Adjuvant grafting enters (LAA).

Various technologies or its some aspects or part may be used and be embodied in tangible medium (such as floppy disk, CD is read-only Memory (CD-ROM), hard disk drive, non-volatile computer readable storage medium storing program for executing or any machine readable storage medium) In program code (that is, instruction) form, when program code is loaded into the machine of such as computer etc and is executed by it When, which becomes the device for executing various technologies.In the case of program code execution on programmable computers, it calculates Equipment may include that processor, the storage medium that can be read by processor (including volatile and non-volatile memory and/or are deposited Store up element), at least one input equipment and at least one output equipment.Volatile and non-volatile memory and/or storage Element can be random access memory (RAM), Erasable Programmable Read Only Memory EPROM (EPROM), flash drive, optical drive Device, magnetic hard drive, solid state drive or other media for storing electronic data.Node and wireless device can be with Including transceiver module (that is, transceiver), counter module (that is, counter), processing module (that is, processor) and/or clock Module (that is, clock) or timer module (that is, timer).In one example, the selected component of transceiver module can To be located in cloud radio access network (C-RAN).May be implemented or using various techniques described herein one or more journeys Sequence can use Application Programming Interface (API), reusable control etc..Such program can be with advanced procedures or object-oriented Programming language is realized, to be communicated with computer system.However, if it is desired to (one or more) program can with compilation or Machine language is realized.In any case, language may be compiled or parsing language, and be combined with hardware implementation mode.

As it is used herein, term " circuit " can refer to following item, can be a part for following item or including such as Lower item：Application-specific integrated circuit (ASIC), electronic circuit, processor (shared, special or combination) and/or execution are one or more soft Memory (shared, special or combination), combinational logic circuit, and/or the other conjunctions that the function is provided of part or firmware program Suitable hardware component.In some embodiments, circuit can be realized in one or more softwares or firmware module, or can be with Function associated with circuit is realized by one or more softwares or firmware module.In some embodiments, circuit can be with Including at least partly operable logic within hardware.

It should be appreciated that many functional units described in this specification have been marked as module, to more specifically emphasize Their realization method independence.For example, module can be implemented as including ultra-large integrated (VLSI) circuit of customization or gate array The hardware circuit of row, ready-made semiconductor (for example, logic chip, transistor or other discrete components).Module can also be by reality In the programmable hardware device of present field programmable gate array, programmable logic array, programmable logic device etc..

Module may be implemented in software, be executed for various types of processors.The executable code identified Module for example may include one or more physical or logic blocks of computer instruction, can for example be organized as object, mistake Journey or function.However, the executable file of the module identified is not necessarily physically placed to together, but may include depositing The different instructions in different location are stored up, these instructions are when being logically grouped together, including the module and reach the mould The purpose of block claimed.

In fact, the module of executable code can be single instruction or multiple instruction, and can even be distributed in not With on several different code segments between program, and across multiple storage devices.Similarly, operation data can be identified With show in module herein, and can be embodied as any suitable form and being organized in any suitable type In data structure.Operation data can be collected as individual data collection, or can be distributed in including different storage device Different location, and the electronic signal that can be at least partially, merely as on system or network and exist.Module can be by It is dynamic or active including operable to execute the agency of required function.

In the present specification the reference of " example " or " exemplary " is meaned to combine the special characteristic of example description, be tied Structure or characteristic are included at least one embodiment of this technology.Therefore, the phrase in each place of this specification " In example " or the appearance of word " exemplary " be not necessarily all referring to identical embodiment.

As it is used herein, for convenience, multiple items, structural detail, composition member can be presented in common list Part and/or material.However, these lists should be interpreted each member in list be separately labeled as it is independent and uniquely at Member.Therefore, in the case of no instruction on the contrary, any separate member of this list shall not be based only upon them and appear in Equivalent on the fact that be understood to be any other member in same list in one common group.In addition, herein can With the alternative solution of various embodiments and example and its various assemblies with reference to this technology.It should be appreciated that such embodiment, Example and alternative solution are not necessarily to be construed as mutual actual equivalent, and should be considered as the independent of this technology and Autonomous expression.

Implement in one or more in addition, described feature, structure or characteristic can combine in any suitable manner In example.In the following description, many details for providing layout, distance, network example etc., to provide to this technology Embodiment thorough understanding.However, those skilled in the relevant art are it will be recognized that this technology can be without one or more It is put into practice together in the case of a specific detail or with other methods, component, layout etc..In other cases, well known structure, Material or operation are not shown or described in detail to avoid the aspect of fuzzy this technology.

Although aforementioned exemplary is the explanation of the principle to this technology in one or more specific applications, for ability Domain those of ordinary skill is evident that, need not make the creative labor and not depart from the principle of this technology and general In the case of thought, can for realization method form, using and details for the use of carry out many modifications.Therefore, in addition to appended power Except profit requires, it is not intended to make limitation to this technology.

Claims (22)

1. a kind of operable to execute the dress of the user equipment (UE) of Physical Random Access Channel (PRACH) process with eNodeB It sets, described device includes：

Memory；With

One or more processors, one or more of processors are configured as：

PRACH lead codes are selected at the UE for being transmitted to eNodeB during the PRACH processes；

Execute whether listem-before-talk (LBT) can be used with the unauthorized channel of determination；

Detect the LBT failures at the UE, wherein the LBT unsuccessfully indicates that the unauthorized channel is not useable in PRACH The PRACH lead codes are sent during chance；And

Select new PRACH resources to be used for follow-up PRACH chances at the UE, wherein the UE be configured as the UE not PRACH preamble transmissions are executed during continuing PRACH chances in the rear when failing by LBT.

2. the apparatus according to claim 1, further including：Transceiver, the transceiver are configured as continuing PRACH in the rear The PRACH lead codes are sent to the eNodeB during chance.

3. the apparatus according to claim 1, wherein one or more of processors were configured as in one of the following item phase Between initiate the PRACH processes：Initial access from idle mode, the uplink scheduling request under connection mode, connection Uplink temporal under pattern is aligned, and the switching under connection mode or the radio resource control (RRC) under connection mode are even Connect reconstruction.

4. the apparatus according to claim 1, wherein one or more of processors are configured as：It is described detecting The transmission power at the UE is maintained after LBT failures, it is upper at the UE caused by redundant power slope to prevent Line link interferes.

5. device according to any one of claim 1 to 4, wherein one or more of processors are configured as：Choosing The new PRACH resources are selected for the follow-up PRACH chances, so that the PRACH lead codes and the use at the UE Time and frequency resource randomization.

6. the apparatus according to claim 1, wherein the UE is configured for MuLTEfire or authorizes auxiliary access (LAA)。

7. a kind of operable to execute the dress of the eNodeB of Physical Random Access Channel (PRACH) process with user equipment (UE) It sets, described device includes：

Memory；With

One or more processors, one or more of processors are configured as：

It is determined at the eNodeB in response to receiving PRACH lead codes and in random access window to the UE from UE Send random access response；

Execute whether listem-before-talk (LBT) can be used with the unauthorized channel of determination；

Detect the LBT failures at the eNodeB, wherein the LBT unsuccessfully indicates that the unauthorized channel is not useable for The random access response is sent during PRACH chances；And

The random access response is handled at the eNodeB with when the eNodeB does not fail by LBT and described The UE is transferred to during random access window.

8. device according to claim 7, further includes：Transceiver, the transceiver are configured as in the random access During window random access response is sent to the UE.

9. device according to claim 7, wherein one or more of processors are additionally configured to extend described random Window is accessed so that the UE can receive the random access response in the random access window from the eNodeB, And the transmission of the random access response is prolonged due to the LBT failures at the eNodeB in the random access window Late.

10. device according to claim 7, wherein the random access window is used as counter, wherein it is described with Active downlink subframe is counted during machine access window, and the counter is detecting the random access sound At once it is stopped.

11. device according to any one of claims 7 to 10, wherein the active downlink subframe includes having The subframe of following item：It was found that reference signal (DRS), Physical Broadcast Channel (PBCH) signal, primary synchronization signal (PSS), auxiliary synchronization The public physical downlink control channel (PDCCH) that signal (SSS), downlink data burst or the eNodeB are sent In indicated other control signalings.

12. device according to claim 7, wherein one or more of processors are additionally configured to：

The size of random access window described in dynamic configuration, wherein the random access window is based in the random access Active downlink subframe is detected at the UE and is dynamically configured in window；And

During downlink subframe the instruction to the size of the random access window is provided to the UE.

13. device according to claim 7, wherein one or more of processors are additionally configured to：When the UE exists When active downlink subframe being not detected in the random access window, by the size expanded definition of the random access window Period, and the size of the random access window can be with the number of expanded definition.

14. device according to claim 7, wherein the eNodeB is configured for MuLTEfire or auxiliary is authorized to connect Enter (LAA).

15. at least one machine readable storage medium includes for executing object between eNodeB in user equipment (UE) thereon The instruction of random access channel (PRACH) process of managing, described instruction is in the one or more processors execution by the UE Execute following operation：

It is determined to eNodeB at the UE and sends radio resource control (RRC) connection request message, wherein the RRC connects Connecing request message is permitted via the uplink from the eNodeB to dispatch；

Execute whether listem-before-talk (LBT) can be used with the unauthorized channel of determination；

Detect the LBT failures at the UE, wherein the LBT unsuccessfully indicates that the unauthorized channel is not useable for by institute The RRC connection request message is sent during the uplink license for stating eNodeB scheduling；

Decode the negative confirmation (NACK) with re-transmission uplink license received from the eNodeB；

The processing RRC connection request message when the UE does not fail by LBT to use in the re-transmission at the UE Line link allowed transport is to the eNodeB.

16. at least one machine readable storage medium according to claim 15 further includes below executing upon being performed The instruction of operation：When the UE skips the uplink dispatched by the eNodeB due to the LBT failures at the UE When license, starts medium access control (MAC) contention and solve timer.

17. at least one machine readable storage medium according to claim 15 further includes below executing upon being performed The instruction of operation：It determines and attempts to send the RRC companies to the eNodeB in re-transmission uplink license in the UE It connects request message and is not incremented by hybrid automatic repeat-request (HARQ) retransmission counter later.

18. at least one machine readable storage medium according to claim 15 further includes below executing upon being performed The instruction of operation：

Detect the down link control information in physical downlink control channel (PDCCH) or enhanced PDCCH (ePDCCH) (DCI)；

Stop medium access control (MAC) contention when detecting the DCI and solves timer；And

Restart the PRACH processes.

19. at least one machine readable storage medium according to any one of claim 15 to 18, wherein medium access Control (MAC) contention solves timer and is extended to the rear to described of the LBT failures for making the UE at the eNodeB ENodeB sends RRC connection setup complete messages.

20. at least one machine readable storage medium according to any one of claim 15 to 18 further includes working as to be held The following instruction operated is executed when row：When using the re-transmissions uplink to permit institute when UE does not fail by the LBT When stating RRC connection request message and being sent to the eNodeB, starts medium access control (MAC) contention and solve timer.

21. at least one machine readable storage medium according to claim 15 further includes below executing upon being performed The instruction of operation：By being monitored from described in physical downlink control channel (PDCCH) or enhanced PDCCH (ePDCCH) The matching temporary cell radio network temporary identifier (C-RNTI) of distribution in the random access response that eNodeB is received comes Detect whether the uplink license is used by lead code conflict by the 2nd UE.

22. at least one machine readable storage medium according to claim 15, wherein the UE is configured for MuLTEfire authorizes auxiliary access (LAA).