Channel access with new radio unlicensed serving cell

Abstract

To achieve channel access using a new radio unlicensed serving cell.SOLUTION: The apparatus receives network assistance information regarding an uplink channel access procedure, such as a channel access type and an associated listen-before-talk technique, via L1 signaling or higher layer signaling. For example, the information is provided via downlink control information (DCI), media access control element (MACCE), or radio resource control (RRC) messaging received in a control resource set (CORESET) preceding configured physical random access channel (PRACH) resources. The procedure is a random access procedure and includes an indication via random access response (RAR) messaging and is triggered by a radio access point message such as a physical downlink control channel (PDCCH) order or a handover request.SELECTED DRAWING: None

Description

[Technical Field]

[0001] (CROSS-REFERENCE TO RELATED APPLICATIONS) This application is entitled "Channel Access Using New Wireless Unlicensed Serving Cells" This application claims the benefit of U.S. Provisional Application No. 62 / 669,086, filed May 9, 2018, which is incorporated herein by reference. the entire contents of which are incorporated herein by reference. [Background technology]

[0002] Machine-to-Machine (M2M), Internet of Things IoT (Internet of Things) and Web of Things (Web of Things) networks The deployment includes M2M / IoT / WoT servers, gateways, and M2M / IoT / WoT applications. Such nodes may include devices that host applications and services. Various network deployments include, for example, constrained networks, wireless sensor networks, and wireless Wire mesh networks, mobile ad hoc networks, and wireless sensors and The behavior of devices in such networks may include actuator networks. Work may comply with standards and proposals such as: 3GPP TS 36.300, Overall Description; Stage 2 (Release 15), V15.0.0; 3GPP TS 36.213, Physical layer procedures (Release 15), V15.0.0; 3GPP TS 36.211, Physical Channels and Modulation (Release 15), V15.0.0; 3GPP TR 38.913, Scenarios and Requirements Study for Next Generation Access Technologies (Release 14), V14.3.0 38.913, Study on Scenarios and Requirements for Next Generation Access Technologies; (Release 14), V14.3.0; R1-164013, Framework for Beamformed Access, Samsung; 3GPP TS 38.300, NR; NR and NG-RAN Overall Description; Stage 2 (Release 15), V15.1.0; 3GPP TS 38.331, Radio Resource Control (RRC) protocol specification (Release 15), V15.1.0; 3GPP TS38.213, Physical Layer Procedures for NR Control (Release 15), V15.0.0 (3GPP TS 38.213, NR; Physical Layer Procedures for Control (Release 15), V15.0.0), 3GPP TS 38.101, User Equipment (UE) radio transmission and reception (Release 15), V15.1.0 (3GPP TS 38.101, User Equipment (UE) radio transmission and reception; (Release 15) V15.1.0), and 3GPP TS 38.211, Physical channels and modulation (Release 15), V15.1.0 (3GPP TS 38.211, Physical channels and modulation (Release 15), V15.1.0). Summary of the Invention

[0003] A method for performing UL channel access with network assistance includes using: For example, NR-U PDCCH command, NR-U RAR grant, NR-U MAC This is a message to signal network support information to UE when performing random access procedures such as RAR. mechanism, a procedure for performing random access using NW assistance information, and FR1 and NR-1000, which uses 60 kHz and 120 kHz subcarrier spacing in unpaired and unpaired spectrum U PRACH configuration. For signaling some parameters of the PRACH configuration. New mechanisms are used to provide greater flexibility for PRACH transmission occasions It is possible.

[0004] The enhanced Clear Channel Assessment (CCA) procedure allows the UE Serving Cell or Serving Cell Scheduler, Channel Resources, and Channels At least one of the access types, e.g., contention-based random access resources or or a transmission type identification code that uniquely identifies a non-contention-based random access resource. It can be used.

[0005] This Summary presents a selection of concepts in a simplified form that are further described below in the Detailed Description. This Summary is provided to identify key or essential features of the claimed subject matter. are not intended to specify any particular Moreover, claimed subject matter is not intended to be a substitute for any part of this disclosure. This invention is not limited to limitations that address any or all of the disadvantages identified.

[0006] BRIEF DESCRIPTION OF THE DRAWINGS A more detailed understanding may be had from the following description, given by way of example in conjunction with the accompanying drawings, in which: The drawings are not necessarily drawn to scale. [Brief explanation of the drawings]

[0007] [Figure 1] Figure 1 shows cell coverage with a sector beam and multiple high-gain narrow beams. [Figure 2] FIG. 2 shows an example of a New Radio (NR) random access procedure. [Figure 3] FIG. 3 is a timing diagram of an example FR1 PRACH configuration index 86 for unpaired spectrum. [Figure 4] FIG. 4 is a block diagram of an example interaction model between L1 and L2 / 3 for a random access procedure. [Figure 5] FIG. 5 shows an example of bandwidth adaptation. [Figure 6] FIG. 6, for example, is a timing diagram for signaling network assistance information. [Figure 7] Figure 7 shows the call flow for an example NR-U random access procedure. [Figure 8]FIG. 8 is an example time schedule of signaling network assistance information for random access preamble transmission. [Figure 9] FIG. 9 is a time schedule of an example of signaling NW assistance information via a PDCCH command. [Figure 10] FIG. 10 is a time schedule of an example signaling of PDCCH orders and preamble transmissions at different COTs. [Figure 11] FIG. 11 is a time schedule of an example signaling for the transmission of handover commands and preambles at different COTs. [Figure 12] FIG. 12 shows an example of a MAC RAR with NW assistance information. [Figure 13] FIG. 13 shows a call flow of an example NR-U contention-based random access procedure using network assistance information. [Figure 14] FIG. 14 illustrates a call flow for an example NR-U contention-free random access procedure with network assistance information signaled via a random access (RA) preamble assignment. [Figure 15] Figure 15 shows the call flow for an example NR-U contention-free random access procedure with NW assistance information signaled separately from the RA preamble allocation. [Figure 16] Figure 16 is a call flow of an example NR-U contention-free random access procedure with NW assistance information signaled separately from the RA preamble assignment (handover). [Figure 17] FIG. 17 is a timing diagram of an example of overlaying LBT with PRACH slots. [Figure 18] FIG. 18 is a timing diagram of an example of a collision between a CCA period and a PRACH transmission occasion. [Figure 19] FIG. 19 is a flow diagram of an example of UE autonomous enhanced CCA. [Figure 20] FIG. 20 is a flow diagram of an example of network-assisted enhanced CCA. [Figure 21] FIG. 21 is a flow diagram of another variation of the network-assisted enhanced CCA. [Figure 22] FIG. 22 illustrates one embodiment of an example communications system that may implement the methods and apparatus described and claimed herein. [Figure 23] FIG. 23 is a block diagram of an example apparatus or device configured for wireless communication. [Figure 24] FIG. 24 is a system diagram of an example radio access network (RAN) and core network. [Figure 25] FIG. 25 is a system diagram of another example of a RAN and a core network. [Figure 26] FIG. 26 is a system diagram of a further example of a RAN and a core network. [Figure 27] FIG. 27 is a block diagram of an exemplary computing system 90 that may embody one or more devices of the communications networks shown in FIGS. DETAILED DESCRIPTION OF THE INVENTION

[0008] Table 1 in the Appendix contains many of the acronyms used herein.

[0009] (LTE License Assisted Access) A carrier with at least one Scell ​​operating in unlicensed spectrum Aggregation is called License Assisted Access (LAA). In LAA, the set of serving cells configured for a UE is In the spectrum, it operates according to frame structure type 3, also known as LAA SCell. Unless otherwise specified, the LAA SCell is usually 3GPP TS36.300, Overview, Stage 2 (Release Stage 15), V15.0.0 (3GPP TS 36.300, Overall Description; Stage 2 (R Please refer to release 15), V15.0.0).

[0010] The LAA eNB and UE listen before transmitting on the LAA SCell. Applying LBT (Long-Term Talk Before Test). When LBT is applied, the transmitter Listens / detects the channel to determine if the channel is free or busy. If it is determined that the state is correct, the transmitter can transmit; otherwise, , and does not perform transmission. When using channel access signals, the LAA eNB performs maximum energy detection for the LAA. The threshold requirements of TS36.300 can still be met.

[0011] (UL Channel Access Procedure) For UL, the UE must use Type 1 or Type 2 UL channel access procedures, 3GPP According to TS36.213, Physical Layer Procedures (Release 15), V15.0.0, LAA It has access to the carrier on which the UL transmission of the SCell is carried out.

[0012] The UE first receives the data during the deferral period T d The channel is detected as idle during the slot and after counter N reaches zero in step 4 of the procedure below, The counter N can be calculated using the following procedure: In turn, adjustments are made by sensing the channel for additional slot periods. 1. N=N init Set N init is 0 and CWp Evenly distributed between Go to step 4. 2. If N>0 and the UE chooses to decrement the counter, then N=N Set to -1. 3. Sense the channel for an additional slot period and wait for the additional slot period to become idle. If yes, go to step 4, otherwise go to step 5. 4. If N=0, stop, else go to step 2. 5. Additional Delay Period T d A busy slot is detected within an additional deferral period T d During The channel is sensed until all slots are detected as idle. 6. Additional Delay Period T d The channel is idle during all slots in If so, proceed to step 4; otherwise, proceed to step 5.

[0013] UL UEs using the Type 2 channel access procedure for transmissions including PUSCH. If so, the UE determines that the channel is shоrt_ul = 25us A transmission containing a PUSCH can be sent immediately after detecting a T shо rt_ul immediately followed by one slot period T sl = 9us duration T f =From 16us Consists of T f is T f Idle slot period T at the start of sl The channel includes T shоrt_ul If the device is detected as idle during the slot period, T shоr t_ul is considered idle for

[0014] For the solution described herein, the term LBT is used in LTE LAA. UL channel access procedures that are the same as or similar to Type 1 and Type 2 UL channel access procedures. Used to refer to the access procedure.

[0015] (LTE frame structure type 3) Frame structure type 3 is an LAA sec- tion with only a normal cyclic prefix. Each radio frame is of length T f =307200 T s = 10 ms, and the length is T slоt =15360 T s = 0 to 19 in 0.5ms A subframe consists of 20 slots numbered as follows: Subframe i consists of slots i and 2i+1. See TS36.211, Physical Channels and Modulation (Release 15), V15.0.0 I want to be.

[0016] 10 subframes within a radio frame are available for downlink or uplink transmission A downlink transmission occupies one or more consecutive subframes and and is fully occupied or begins anywhere within Table 4 of TS36.211 The last subframe following one of the DwPTS periods specified in .2-1 (Table 4.2-1) The uplink transmission occupies one or more consecutive subframes.

[0017] (NextGen network requirements) 3GPP TR38.913, Study of Scenarios and Requirements for Next Generation Access Technologies ,(Release 14),V14.3.0 includes scenarios and requirements for next-generation access technologies. The KPIs for eMBB, URLLC, and mMTC devices are defined in Table 22. To summarize:

[0018] (NR beamforming access) Currently, to design a framework for beamforming access, 3GPP standardization efforts are underway. The characteristics of the radio channel at higher frequencies are This is significantly different from the sub-6GHz channels that LTE is currently deployed on. A major challenge in designing new radio access technologies (RATs) is the need for higher frequency bands. In addition to this higher path loss, Higher frequencies are subject to unwanted scattering due to blockages caused by diffraction weaknesses. Therefore, to ensure sufficient signal level at the receiver, MO / Beamforming is essential. R1-164013, Beamforming See Samsung, Framework for Access by Samsung Electronics.

[0019] Digital beamforming (Be) is used to compensate for the additional path loss at higher frequencies. It relies solely on MIMO digital precoding used by BF (Broadcasting Function). is not considered sufficient to provide coverage similar to that below 6 GHz. Therefore, the use of analog beamforming to achieve additional gain is In conjunction with digital beamforming, this could be an alternative. The antenna elements must be formed, which is quite different from those assumed in the LTE evaluation. If the beamforming gain is large, the beamwidth will be As the beams tend to be narrower, the beams with large directional antenna gains tend to be narrower, especially in a three-sector configuration. The limiting factor for the number of simultaneous high-gain beams is the number of The cost and complexity of the transceiver architecture are included.

[0020] From these observations above, narrow serving areas that can be steered to cover different serving areas are Multiple transmissions in the time domain using coverage beams are required. The analog beam of rays is distributed with the time resolution of an OFDM symbol or to different servers within a cell. Any suitable time interval unit defined for beam steering over the beam area. can be steered in a single direction, and therefore the number of subarrays is The beam steering is performed every DM symbol or at the time interval defined for beam steering. Determine the number of field directions and the corresponding coverage. Some literature provides Providing multiple narrow coverage beams for this purpose is called "beam sweeping." In the case of hybrid beamforming, beam sweeping is the basic coverage in NR. This concept is illustrated in Figure 1, where The coverage of the L-cell is achieved using a sector beam and multiple high-gain narrow beams. Also, analog and hybrid beamforming with massive MIMO are being implemented. In the case of NR, in order to cover the entire coverage area in the serving cell, With narrow coverage beams that are steered to cover different serving areas Multiple transmissions in the inter-region are essential.

[0021] A concept closely related to beam sweeping is that of beam pairing. Signaling is a communication link between the UE and its serving center that can be used for control signaling or data transmission. For downlink transmission, the beam A pair consists of a UE RX beam and an NR node TX beam. ,The beam pair consists of a UE TX beam and an NR node RX beam.

[0022] Another related concept is that of beam training, which is used for beam fine tuning. For example, during the beam sweep and sector beam pairing procedure, as shown in Figure 1, Coarser sector beamforming can be applied, followed by beam training. For example, the antenna weight vectors are fine-tuned, followed by high gain between the UE and the NR node. Narrow beam pairing can be performed in

[0023] (NR random access procedure) The random access procedure can be triggered by several events, such as: will be done. - Initial access from RRC idle (RRC_IDLE). · RRC connection re-establishment procedure. Handover. - When the UL synchronization state is "asynchronous", the DL or Or UL data incoming. Transition from RRC Inactive (RRC_INACTIVE). · Requests from other SIs. - Beam damage recovery.

[0024] 3GPP TS38.300, NR, NR and NG-RAN Overview, Stage 2 (Release See RFC15, V15.1.0.

[0025] Furthermore, the random access procedure can be divided into contention-based and contention-free, as shown in Fig. 2. It takes two different forms: normal DL / UL transmission takes place after a random access procedure. This can be done.

[0026] In case of initial access in a cell configured with SUL, the UE shall Select the SUL carrier only if is lower than the broadcast threshold. All uplink transmissions for the system access procedure, once initiated, remain on the selected carrier. .

[0027] (Random access configuration) RACH-ConfigGenericI for both normal random access and beam failure recovery E is used to specify cell-specific random access parameters. 8.331, Radio Resource Control (RRC) Protocol Specification (Release 15), V15.1 See .0. This IE contains the prach-Configurator element that specifies the PRACH configuration in use. ationIndex field. Figure 3 illustrates an embodiment of the solution described herein. The FR of the unpaired spectrum corresponding to PRACH configuration index 86 is used for 1 is a diagram of the PRACH configuration.

[0028] (Interaction model between L1 and L2 / 3 for random access procedures) The above random access procedure is shown in Figure 4 below from the perspective of L1 and L2 / 3 interaction. L2 / L3 is modeled as an instruction to L1 to send a random access preamble. After this, an indication of whether an ACK was received or a DTX was detected is sent from L1. L2 / 3 receives the first scheduled UL transmission (initial access) if necessary. RRC connection request in case of RRC access) or random access process based on instructions from L1 Instructs L1 to send a preamble.

[0029] (NR bandwidth adaptation) Bandwidth Adaptation (BA) allows the UE's receiving and transmitting bandwidth to be comparable to the cell's bandwidth. It does not need to be very large and can be adjusted, i.e., to change the width (e.g., (to reduce during periods of low activity to conserve power), and the position can be instructed to can be moved around in the area (e.g., for more scheduling flexibility), and to vary the spacing of the subcarriers (e.g., to enable different services) A subset of the total cell bandwidth of a cell is called a Bandwidth Part (BWP). It is called to configure the UE with BWPs and to determine which of the configured BWPs is currently active. BA is realized by informing the UE whether it is ,See Physical Layer Procedures for Control (Release 15), V15.0.0.

[0030] Figure 5 illustrates a scenario in which three different BWPs are configured. · BWP1, which is 40MHz wide and has a subcarrier spacing of 15kHz. · BWP2 with a width of 10 MHz and subcarrier spacing of 15 kHz. · BWP3 with a width of 20 MHz and subcarrier spacing of 60 kHz.

[0031] A serving cell can consist of up to four BWPs, and the activated serving For a serving cell, there is always one active BWP at any given time. Cell BWP switching activates the inactive BWPs and activates the active BWPs at a time. It is used to deactivate the active BWP and It is controlled by the PDCCH which indicates the grant of the access. or SCell activation, downlink assignment or uplink grant One BWP is initially active without receiving a PDCCH indicating a service. The active BWP of the corresponding cell is indicated by RRC or PDCCH. In the case of a converter, the DL BWP is paired with the UL BWP, and the BWP switching is It is common to both L (TS38.213).

[0032] (assignment) The UE performs a listen-before-talk (LBT) before transmitting on the NR-U serving cell. When LBT is applied, the UE performs clear channel assessment (CCA). The channel is determined to be free or busy. If so, the UE may transmit, otherwise the UE shall not transmit.

[0033] The multiplexing technique used (e.g., Code Division Multiplexing (CDM), Frequency Division Multiplexing ( Frequency Division Duplex (FDM), Time Division Duplex (TDM) Even if it is possible to do so, neighboring UEs (e.g., PUSCH, PUCCH, S If transmissions from the RS, RACH, etc. overlap with the CCA period, the LBT may fail.

[0034] For example, a random access design allows multiple UEs (up to 64) to transmit PRACH. This allows multiple PRACHs to share the same PRACH resource during multiple transmission occasions. If a neighboring UE's transmission overlaps with the CCA period, the channel is considered "busy" and cannot be used. The multiplexing techniques used allow transmissions to be carried out without causing interference to adjacent UEs. Therefore, even if the UE is configured to The dumb access procedure is extended to allow UL from neighboring UEs to receive preambles from the UE. The following scenarios are possible:

[0035] Scenario 1: Contention-based preambles from other users on the channel from the same cell Due to the transmission, the LBT may fail.

[0036] Scenario 2: Non-contention based preamble by other users of the channel from the same cell LBT may fail due to the message transmission.

[0037] Scenario 3: For example, PUSCH, PUC by other users on the channel from the same cell There is a possibility that LBT may fail due to other UL transmissions such as CH, SRS, etc.

[0038] Scenario 4: For example, Wi-Fi users, or users in the same or different PLMNs LBT failure due to transmissions by other users of the channel, such as users from other cells There is a possibility that this will happen.

[0039] Due to the above possible scenarios, while the UE does not postpone transmission in scenarios 1, 2 and 3, Therefore, to ensure that the transmission in scenario 4 is postponed, the UE may consider scenario 4 as a separate scenario. For example, the UE must be able to distinguish between Wi-Fi transmissions and other scenarios. A channel in a secure state is defined as a channel in a secure state, such as PUSCH, PUCCH, SRS, or RACH. It must be possible to distinguish between busy channels as a result of regular data transmission. We need to find ways to make such distinctions.

[0040] (Network-assisted UL channel access) As discussed in the Problems section of this document, they are under the control of the same scheduler and are given Transmissions from neighboring UEs (e.g., P If a channel (such as USCH, PUCCH, SRS, or RACH transmission) overlaps with the CCA period, Channel access procedures performed by E, such as LBT, may fail. To address this issue, the gNB may implement a channel that can be performed before performing an UL transmission. Used by the UE to determine and / or adapt the network access procedure. The UE may be provided with the network assistance information.

[0041] The UE that has received the network assistance information then performs the LBT procedure before performing an UL transmission. may be foreclosed, or a different set of configuration parameters for the LBT procedure, e.g. For example, different energy detection thresholds (X Thresh ), detection interval / delay period (T d ), Conte The CW size may also be used.

[0042] The NW assistance information is, at least in part, a result of the LBT procedure performed by the gNB, Or, two UEs may be scheduled for the same scheduler, with upcoming transmissions from neighboring UEs under the control of the same scheduler. When there is coordination between schedulers, from neighboring UEs under the control of different schedulers and / or an upcoming transmission of the

[0043] Network assistance information includes channel access type and channel access priority class. The channel access information may include at least one of the following: The access information specifies the type of UL channel access procedure and a set of configuration parameters that may be used. This can be used by the UE to determine the channel access type. This allows the LBT procedure to be adapted based on the radio environment, and channel access priority Uses degree classes to provide QoS differentiation when performing UL channel access procedures The network assistance information includes the parameters used when performing the LBT procedure. Explicit values ​​of the meters, e.g., Energy Detection Threshold (X Thresh ), detection interval / delay period Between (T d ), contention window (CW) size, etc. The values ​​used for the specified channel access type are semi-statically configured or predefined as per the standard. It can be done.

[0044] The following are exemplary channel access types and corresponding UL channels that may be defined: This is a list of access procedures. · Type 1: LBT with random backoff using a default configuration set. · Type 2: LBT without random backoff using the default configuration set. Type 3: For the default configuration set, e.g., higher X Thresh or a shorter test Knowledge interval / postponement period (T d) and other alternative configuration sets for random backoff. No LBT. Type 4: No LBT.

[0045] For NR-U, the UE behavior for Type 1 and Type 2 channel access types is as follows: The same or similar behavior as defined for Type 1 and Type 2 LAA channel access It can be defined as:

[0046] Type 3 channel access behavior is more aggressive in accessing channels. For example, the detection interval T short_ul is a single time slot period T sl = 9 can be defined to consist of us and energy detection X thresh is the value used for type 2 The channel may be set to a high value compared to the sensing interval T shоrt_ul X inside thres h If it is detected that the shоrt_ul is considered idle for will be done.

[0047] Type 4 behavior is such that the UE immediately transmits without performing LBT. could be.

[0048] Additional channel access types can be defined as needed.

[0049] Alternatively, the network assistance information may allow the UE to forgo the LBT procedure. This may consist of a Clear to Send (CTS) that may be used to indicate whether a

[0050] When the UE performs its channel access procedure, e.g., LBT, the NW assistance information DL transmissions should be used to transmit network assistance information to ensure that the UL transmissions performed by the UE can be transmitted over the same channel, as shown in Figure 6. Occurs during a certain time (COT).

[0051] The network assistance information may be, for example, a transmission period and an opportunity or occurrence of transmission within that period. The resource allocation information may include frequency resource allocation information. Based on this information, the UE can determine when users in the same serving cell are transmitting. The UE knows when it is receiving and when it is not transmitting. The UE decides whether to postpone its transmission. For example, the UE may use this information to determine whether to Clear Channel Assessment (CCA) capability for detecting and decoding cell channel signals The UE may not perform re-sensing function. In this case, if the LBT result indicates that the channel is busy, Within the serving cell, within a non-serving cellular RAT, or across a non-cellular system such as WiFi The channel is busy as a result of transmissions from channel-sharing users in the system, E may postpone its transmission.

[0052] Network-assisted access information may be provided via L1 signaling (e.g., DCI) or higher layers. Signaling to the UE via signaling (e.g., MAC CE, RRC messages) Transmission of network assistance information may be dedicated, group-based, or broadcast. Furthermore, assistance information can be transmitted using DCI signaling. If configured in the UE, the UE in the serving cell shall use the group PDCCH to It can be specified as

[0053] (Random Access) The NR-U serving cell can be a SCell, a PSCell, or a may be configured as a PCell.

[0054] Carrier aggregation between licensed band NR (PCell) and NR-U (SCell) In the case of CA, random access is enabled in NR-U S due to the following events: It can be implemented using Cell. To establish time consistency with NR-U SCell. -Beam failure recovery.

[0055] Dual communication between licensed band LTE (PCell) and NR-U (PSCell) In the case of connectivity (DC), random access is disabled due to the following events: This can be done using a PSCell. -SCG additions / changes. UL / DL data when UL is "unsynchronized" or there are no PUCCH resources Incoming call. When UL is "asynchronous", incoming DL data causes RA on the NR-U PSCell The NR-U SCell of the CH or SCG is triggered. When UL is "unsynchronized" or there are no PUCCH resources, UL data arrival This triggers the RACH on the NR-U PSCell. -Beam failure recovery.

[0056] For Standalone (SA) NR-U, random access is enabled for the following events: The service can be performed using an NR-US SA cell. Early access, - RRC connection re-establishment, Handover, UL / DL data when UL is "unsynchronized" or there are no PUCCH resources Incoming call, Transition from RRC inactivity, Requests for other SIs, or -Beam failure recovery.

[0057] When performing random access using an NR-U serving cell, random access Each step of the procedure is performed by a transmitting node after a channel access procedure, e.g., LBT, has been performed. This may need to be performed as shown in FIG.

[0058] To prevent a UE from postponing transmissions from neighboring UEs that overlap with the CCA period, the gNB is a channel access procedure that may be performed before transmitting the random access preamble. The UE may provide assistance information used by the UE to perform at least one of the determination and adaptation. It can be provided to E.

[0059] (Signaling mechanism for signaling network assistance information) When the UE performs its channel access procedure, e.g., LBT, the NW assistance information To ensure that the NW assistance information is valid, DL transmissions may be used to transmit the NW assistance information. The random access preamble transmission occurs during the same COT, as shown in Figure 8. do.

[0060] NW assisted access information can be provided through dedicated, group-based, or broadcast signaling. L1 signaling (e.g., DCI) or higher layer signaling that may be transmitted using The UE may be signaled via a message (e.g., MAC CE, RRC message).

[0061] Table 3 shows an example of a DCI format that can be used to signal network assistance information. DCI is the C-RNTI or the Network Assisted RNTI (NA-RNTI). The NA-RNTI can be scrambled by the NTI (NTI) for the existing RNTI value. A unique value, for example 0xFFFD, is assigned to each

[0062] In this example, the NW assistance information may be performed before the transmission of the random access preamble. The channel access type field is used to indicate the type of channel access procedure to be performed. The channel access type field consists of a value of 0 corresponding to type 1, a value of The access types can be defined such that type 1 corresponds to type 2, etc., and the access types can be defined as It can be predefined according to an exemplary channel access type.

[0063] The DCI format determines the channel based on the QoS of the service associated with the trigger event. Channel access priority classes, etc., that can be used to adapt the channel access procedure. It can be expanded to include additional fields.

[0064] The network assistance information is transmitted via a group-common PDCCH scrambled by the NA-RNTI. Alternatively, for example, the UE may perform a contention-free random access procedure. In this case, the NW assistance information is switched by the C-RNTI for UE specific indication. It may be transmitted using a scrambled DCI format.

[0065] This DCI may be transmitted in a CORESET preceding the PRACH resource. is the number of times for the Type 0-PDCCH common search space or the Type 1-PDCCH common search space. Alternatively, this may be the same as the CORESET provided by, for example, nw-assistance-co A different CORESET configured by higher layer parameters such as reset-configuration may be.

[0066] The UE may, for example, use the common search space ( For example, Type 0-PDCCH common search space, Type 1-PDCCH common search space) or may monitor NW assistance information in a UE-specific search space. The UE may also, for example, NW-assisted search space that can be configured by higher layer parameters such as support-SearchSpace The device may be configured to monitor the

[0067] UEs configured to monitor this DCI will transmit a random access preamble. determining and / or adapting a channel access procedure that may be performed before The network assistance information is then detected, which is then used to

[0068] Network assistance information DCI is not received by the UE, but SSB, CSI-RS, Either the group-common PDCCH or other PDCCHs in the common search space are used by the UE. If detected on DL, the detected SSB, CSI-RS, and group-common PDCCH or other PDCCH may be used as an implicit indication from the gNB during COT. In this case, the UE must be configured for the channel access procedure or fallback The network assistance information DCI can also be used. Any DL signal (e.g., SSB or CSI-RS) or PDCCH may also be transmitted depending on the channel state, e.g. If the UE is unable to detect the channel due to poor signal quality or DL ​​LBT failure, the UE will use the default channel address. For example, using type 1 as described here, The channel access procedure is performed before the transmission of the random access preamble using Alternatively, if no network assistance information DCI is received, the UE may This allows you to "omit" the rumble transmission.

[0069] When performing a network-triggered random access procedure, the gNB Events that triggered the access procedure, e.g. DL data arrival, handover, etc. In response, NW assistance information is sent to the UE to add NR-U SCell and SCG. In these scenarios, random Messages used to transmit the access preamble and corresponding PRACH transmitters If the exchange occurs during the same COT, the message used to trigger the random access procedure NW assistance information can be signaled in the message.

[0070] Figure 9 shows the random access procedure, in which the gNB transmits a PDCCH command containing network assistance information. FIG. 10 is a diagram of a time schedule of scenarios triggered using commands.

[0071] Table 4 is an example definition of an NR-U PDCCH command that may be used to signal NW assistance information. In this example, the NW assistance information consists of a channel access type field that is used to indicate the type of channel access procedure that may be performed before transmission of the random access preamble. The channel access type field may be defined such that a value of 0 corresponds to type 1, a value of 1 corresponds to type 2, etc., and the access types may be predefined according to the example channel access types described herein.

[0072] The NR-U PDCCH command is based on the QoS of the service associated with the trigger event. channel access priority classes that can be used to adapt the channel access procedure It can be expanded to include additional fields such as

[0073] Alternatively, the NW assistance information may be included in the message used to trigger the random access procedure. This allows random access Messages used to trigger procedures and to provide NW assistance information The messages to be sent can be sent during different COTs.

[0074] Figure 10 shows that the PDCCH command used to trigger the random access procedure is OT x NW support information is sent during COT y A diagram of the scenario transmitted during CO T x and COT y may or may not be consecutive.

[0075] Figure 11 shows the handover command used to trigger the random access procedure. The end is COT x The NW assistance information is sent by the source gNB during COT yTarget inside Figure 1 shows a scenario in which a signal is transmitted by a gNB.

[0076] The RAR signaled during the random access procedure described herein is RAR U A channel access procedure that may be performed before a UL transmission scheduled by an L grant. Network assistance information used by the UE to make decisions and / or adapt It may also include:

[0077] For example, the NW assistance information may be included as a field in the RAR UL grant. Table 5 is an example definition of an NR-U RAR UL grant that may be used to signal the NW assistance information. In this example, the NW assistance information consists of a channel access type field that is used to indicate the type of channel access procedure that may be performed before the scheduled UL transmission. The channel access type field may be defined such that a value of 0 corresponds to type 1, a value of 1 corresponds to type 2, etc., and the access types may be predefined according to the example channel access types described herein.

[0078] The NR-U RAR UL certification is valid for UL transmissions scheduled by the RAR UL certification. A channel access protocol that can be used to adapt the channel access procedure based on the QoS of the communication. It can be extended to include additional fields such as access priority class.

[0079] Alternatively, the NW assistance information may be signaled as a field in the MAC payload of the RAR. An exemplary MAC RA that can be used to signal NW assistance information is R is shown in Figure 12. In this example, the NW assistance information consists of channel access types. The fields of the MAC RAR can be defined as follows: ·R: Reserved bit, set to "0". Channel Access Type: The Channel Access Type field is used to This is a 3-bit field that indicates the type of channel access procedure that may be performed before an UL transmission. In the Channel Access Type field, a value of 0 corresponds to type 1, a value of 1 corresponds to type 2, etc., and the access type can be defined as the exemplary channel access type described herein. The process type can be predefined. Timing Advance Command: The Timing Advance Command field is Controls the amount of timing adjustment that a C entity must apply in TS38.213 The index value T used to A Timing Advance Command Field The field size is 12 bits. UL Certification: The uplink certification field specifies the uplink certification in TS38.213. Indicates the resource to be used. The size of the UL authorization field is 25 bits. Temporary C-RNTI: The temporary C-RNTI field is used during random access. Indicates the temporary identity used by the C-entity. Temporary C-RNTI field The size of is 16 bits.

[0080] MAC RAR with NW support information scheduled by RAR UL authorization A channel that can be used to adapt the channel access procedure based on the QoS of the UL transmission. It can be extended to include additional fields such as the network access priority class.

[0081] Random access preamble, and UL transmissions scheduled via RAR For scenarios occurring during the same COT, before sending the random access preamble The NW assistance information used to determine / adapt the channel access procedure that may be performed is: RAR may be executed before executing any UL transmission scheduled by the UL authorization. It may also be used to determine / adapt the channel access procedure that is used.

[0082] (Random access using network support information) Figure 13 shows the schematic diagram for the NR-U contention-based random access procedure with network assistance information. In this example, as shown in Figure 8, NW support information and random access The transmission of the spramble occurs during the same COT. The transmission of the remaining messages occurs during this COT. It can occur during T or during different COTs.

[0083] Figure 14 shows the signaling for the NR-U contention-free random access procedure using network assistance information. In this figure, the NW assistance information and RA preamble allocation are In this example, the PDCCH command and the Random Number are signaled as shown in Figure 9. The transmission of network assistance information via dumb access preamble occurs during the same COT. The transmission of the random access response is performed in conjunction with the transmission of the PDCCH command and the random access preamble. They can occur during the same COT or different COTs.

[0084] Figure 15 shows the signaling for the NR-U contention-free random access procedure using network assistance information. RA preamble allocation is signaled via a PDCCH command. In this example, the NW assistance information is signaled separately as shown in Figure 10. In addition, the transmission of the network assistance information and the random access preamble occurs during the same COT. The transmission of the RA preamble allocation via the PDCCH order occurs during a different COT. The transmission of RAR is performed in the same COT as the transmission of NW assistance information and random access preamble. It may occur within a COT or within a different COT.

[0085] Figure 16 shows the signaling for the NR-U contention-free random access procedure using network assistance information. RA preamble allocation is done via a handover command. The NW assistance information is signaled separately.

[0086] In this example, as shown in Figure 11, the transmission of NW assistance information and random access preambles is performed. The transmission of the RA preamble assignment occurs during a different COT. The transmission of the RAR is the same as the transmission of the network assistance information and the random access preamble. They may occur in the same COT or in different COTs.

[0087] (NR-U random access configuration) In NR, there are two frequency ranges, FR1 and FR2, as defined in Table 6. See 3GPP TS38.101, Radio Transmission and Reception for User Equipment (UE) (Release 15), V15.1.0.

[0088] For PRACH in NR, 1.25, 5, 15, and 30 kHz for FR1 subcarrier spacing is used, with 60 and 120 kHz used for FR2.

[0089] The time position and duration of the LBT can be selected more flexibly, and PRACH resources can be used. This allows for more efficient use of the NR-U in FR1 at 60 kHz and 1 It would be beneficial to introduce a subcarrier spacing of 20 kHz. Using 60 kHz subcarrier spacing for the preamble, the PRACH transmission occasion There may be a large number of symbols available for each SF (1 ms). For example, let's divide the LBT period into six 60 kHz symbols. Assuming that the OFDM symbols are used, only 12 out of 14 symbols (85.7%) are used for PRAC. Compared to the case of 15 kHz subcarrier spacing, which cannot be used for H transmission occasions, e.g. For example, 50 out of 56 symbols (89.3%) are available for PRACH transmission occasions. It is Noh.

[0090] Support for 60 and 120 kHz RACH configurations for NR-U in FR1 ,3GPP TS38.211, Physical Channels and Modulation (Release 15), V15.1.0 Use an existing RACH configuration table defined in or use the same RACH-ConfigGen This can be done by using ericIE, see TS38.331.

[0091] By introducing a separate RACH configuration table for NR-U, A more flexible RACH configuration can be used for this purpose.

[0092] An example is shown in Table 7. In this example, the columns in the RACH configuration table defined for NR are The "Number of PRACH slots in a subframe" has been deleted. Instead, the information listed in has been moved to RACH-ConfigGenericIE. This provides a more flexible configuration for PRACH transmission occasions.

[0093] A second example is shown in Table 8. In this example, the RACH configuration table defined for NR columns ("Start symbol" and "Number of PRACH slots in subframe") are removed. In Code Example 2, the information listed in these two columns is instead listed in RACH-ConfigG These changes allow for PRACH transmission occasions to be This allows for a more flexible configuration.

[0094] Several configurations of LBT (duration and time position) and configured PRACH transmissions In some cases, a collision may occur. In that case, the UE's behavior is to This may result in PRACH transmission occasions that collide with Figure 18 being considered invalid. In this diagram, PRACH transmission occasion 0 will be disabled. Only PRACH transmission occasion 1 and PRACH transmission occasion 2 remain valid.

[0095] (Extended CCA) An extended CCA using a transmission type identification code can be used. The code is used by the UE serving cell or serving cell scheduler, channel resources, and, for example, contention-based random access resources or non-contention-based random access resources. A code or set of codes that uniquely identifies a channel access type for a given access resource. It is a combination.

[0096] At the beginning of a PRACH transmission opportunity, each U intending to perform a random access procedure E is the short period of time interval before transmitting the actual PRACH preamble. The PRACH transmission type identification signal is repeatedly transmitted. Similarly, the random access procedure is Each UE that intends to perform this shall transmit a PRACH preamplifier at the beginning of the PRACH transmission opportunity. for a short period of time, such as the same short period of time as the transmission of the transmission type identification signal, before transmitting the The UE monitors the transmission type identification signals from other users of the channel over a period of time. its own knowledge of the signal type identification signal, or the transmission period and Using its knowledge of the occurrence of transmissions in time, it decides whether to yield to other users of the channel. The decision is made as follows:

[0097] This extended CCA procedure can be summarized as follows: Various variations of the procedure are shown in Figure 1. 19, 20, and 21.

[0098] Assumption: At the beginning of a PRACH transmission opportunity, a random access procedure is intended to be performed. Each UE transmitting a PRACH preamble transmits a short time interval before transmitting the actual PRACH preamble. The call type identification signal is repeatedly transmitted.

[0099] (Carrier Sensing) A UE intending to transmit a PRACH shall transmit the PRACH for a short time prior to the actual transmission of the PRACH. During carrier sensing, the UE performs carrier sensing during the interval. Detect and decode transmission type identification signals or codes transmitted by other users of the The transmission type identification signal or code determines whether the PRACH transmission is contention-based or non-contention-based. If a PRACH transmission is detected, the UE may not postpone. If the identification indicates that the UE may defer, the channel is considered busy and the associated The PRACH may be kept busy for the duration of the transmission period. It is possible.

[0100] (Energy Detection (ED)) Energy detection here involves detecting the noise floor, ambient energy, interferers, and corrupted based on unacknowledged non-serving cell transmissions that may be present and no longer decoded. on the same channel (e.g., from the same PLMN, a different PLMN, or WiFi) Refers to the UE's ability to detect non-serving cell energy levels. The threshold is set based on the serving cell signal, non-serving cell signal (e.g., of the same PLMN or a different PLMN). UE for serving cell signals, or non-cellular signals, or for example WiFi signals. The UE may receive non-serving cell signals or other non-cellular signals. Using a predefined ED threshold for Determine whether the channel is high enough to be considered busy or idle.

[0101] The UE may use contention-based PRACH transmission or or does not detect a transmitted identification signal or code indicative of a contention-based PRACH transmission, and The UE is connected to a non-serving cell ED that is present on the channel as part of the ED function of CCA. If the UE detects a non-serving energy level higher than the threshold, it determines that the channel is It may be considered busy during the relevant period and postponed.

[0102] The enhanced CCA can be network assisted or UE autonomous enhanced.

[0103] For example, in a network-assisted scheme, the assistance information is provided by, for example, a contention-based random One or more transmissions on the access resource or non-contention-based random access resource The assistance information may include a type identification code. cast signaling or groupcast signaling) or RRC dedicated signaling The assistance information may be configured in the UE via DCI signaling. In this case, the group PDCCH is used to determine the UE's serving cell. can be addressed.

[0104] In the case of the UE autonomous-based enhanced CCA method, the transmission type identification signal or code is stored in the UE. The parameters may be pre-configured in the metric or may be defined in a specification.

[0105] In the example of FIG. 19, in step 1, the UE receives a predefined transmission type identification code. Predefined transmission type identification codes are, for example, preconfigured, provisioned, or may have been provided to the UE through the specification.

[0106] In step 2, the UE determines whether it is, for example, a PRACH that the UE intends to transmit. Checks if this is the start of a new transmission opportunity, such as an occasion. In this case, the UE may perform other tasks before checking again for a new transmission opportunity. Cut.

[0107] If in step 2 this is the start of a new transmission opportunity, then in step 3 the UE Repeatedly send different type codes.

[0108] Step 4 is Clear Channel Assessment (CCA) Energy Detection (ED). The UE , listen to its own channel and transmit energy above the non-serving cell ED threshold. Detect non-serving cell users with a low level.

[0109] If an eligible non-serving cell user is found in step 4, then in step 5 the UE ,declare the channel busy, postpone transmission, and return to step 1.

[0110] If no eligible non-serving cell user is found in step 4, then in step 6, the UE performs CCA carrier sensing to detect the presence of channel-sharing users in its serving cell. Detect and decode different transmission type identification codes from the UE's serving cell channel. Upon detecting and decoding the different transmission type identification codes from the shared users, the UE performs the steps Return to P1.

[0111] In step 6, if the UE does not detect and decode a different transmission type identification code, In step 7, the UE determines that the channel is idle, e.g., the PRACH preamble is Continue transmission with amble transmission.

[0112] The operation in the example of FIG. 20 is similar to the operation in FIG. 19. However, in the example of FIG. 20, ,In step 1, the RRC configures the UE with one or more ,transmission type identification codes. The operations in steps 2 to 7 are similar to those in the example of FIG.

[0113] In the example of Figure 21, in step 1, the RRC receives one or more transmission type identification codes and The UE is configured with the UE ID and future resource reservations of the serving cell.

[0114] In step 2 of FIG. 21, the UE determines whether it is, for example, a P Checks if it is the beginning of a new transmission opportunity, such as a RACH occasion. If not, the UE may perform other tasks before checking again for a new transmission opportunity. It is possible.

[0115] If in step 2 this is the start of a new transmission opportunity, then in step 3 the UE Repeatedly send different type codes.

[0116] Step 4 is Clear Channel Assessment (CCA) Energy Detection (ED). The UE , listen to its own channel and transmit energy above the non-serving cell ED threshold. Detect non-serving cell users with a low level.

[0117] If an eligible non-serving cell user is found in step 4, then in step 5 the UE ,declare the channel busy, postpone transmission, and return to step 1.

[0118] If no eligible non-serving cell user is found in step 4, then in step 8, the UE checks whether there are any users sharing the channel of the serving cell to transmit during the period. Click.

[0119] In step 8, if there are no channel-sharing users of the serving cell transmitting during the period, If so, in step 9, the UE declares the channel to be idle, e.g., PRA Continue transmission such as CH preamble transmission.

[0120] In step 8, if there are channel sharing users of the serving cell who transmit during the period In step 6, the UE performs CCA carrier sensing to detect the carrier Detect and decode different transmission type identification codes from channel sharing users. 6, different transmission type identification codes from channel sharing users of the UE's serving cell are If not detected and decoded, the UE determines that the channel is idle, and The UE continues with transmission, e.g., PRACH preamble transmission. Otherwise , the UE declares the channel busy and returns to step 1.

[0121] The Third Generation Partnership Project (3GPP) is a Support network and codec, security and quality of service Develop technical standards for cellular communications network technology, including service capabilities, including efforts to Recent Radio Access Technology (RAT) standards include Wideband Code Division Multiple Access (WCA). Code Division Multiple Access (WCDMA) (commonly known as 3G) LTE (commonly referred to as 4G), and LTE-Advanced standards 3GPP is working on a next-generation cell technology called New Radio (NR), also known as "5G." The development of the 3GPP NR standard involves the development of next-generation wireless access This is expected to include the definition of new RATs, which will include new Provision for flexible wireless access and new ultra-mobile broadcasting above 6GHz The standard is expected to include provisions for broadband wireless access. Flexible wireless access will be It consists of new, non-backward compatible radio access in new spectrum below 6 GHz. It is expected that 3GPP NR will be widely adopted in the near future, addressing a wide range of 3GPP NR use cases with diverse requirements. It is expected to include different modes of operation that can be multiplexed within the same spectrum. Il Broadband is an ultra-mobile broadband solution for indoor use and hotspots, for example. It is expected to include centimeter-wave and millimeter-wave spectrum, which will provide broadband access opportunities. In particular, ultra-mobile broadband requires design optimization specific to centimeter and millimeter waves. Sharing a common design framework with optimizations for sub-6 GHz flexible radio access It is expected.

[0122] 3GPP has identified various use cases that NR is expected to support, resulting in , and diverse user experience requirements for data speed, latency, and mobility. The use cases include the following general categories: Extended Mobile Broadband (e.g., broadband access in dense areas, indoor ultra-high-speed broadband) Broadband access in crowded areas, 50Mbps or more everywhere , ultra-low-cost broadband access, in-car mobile broadband), critical communications communication, large-scale machine-type communication, network operations (e.g., network slurs) Issuing, routing, migration and interworking, and energy conservation ), and Enhanced Vehicle-to-Everything: eV2X) communications. Specific services and applications within these categories include: Some examples include monitoring and sensor networks, remote control of devices, and two-way remote control. Remote control, personal cloud computing, video streaming, wireless cloud Connectivity to base offices, first responders, eCall for automobiles, disaster alerts, Real-time games, multi-person video calls, autonomous driving, augmented reality, touch internet, Virtual reality, etc. This specification contemplates all of these use cases and more. is doing.

[0123] FIG. 22 is a diagram of a communication system that may embody the methods and apparatus described and claimed herein. 1 illustrates an embodiment of an example communication system 100. As shown, the example communication system 100 includes a wireless Wireless Transmit / Receive Units (WTRUs) 102a, 102b, At least one of 102c and 102d (generally or collectively referred to as WT 102) and the Radio Access Network (RAN) 103 / 1 04 / 105 / 103b / 104b / 105b and core network 106 / 107 / 1 09 and the Public Switched Telephone Network (PSTN) 108 and , the Internet 110, and other networks 112, although the disclosed implementations The topology may include any number of WTRUs, base stations, networks, and network elements. It will be understood that the WTRUs 102a, 102b, 102c, 102d, Each of the 02e may be any type of device or equipment configured to operate or communicate in a wireless environment. may be devices. Each of these is illustrated in Figures 22 to 26 as a handheld wireless communication device, but Given the wide variety of use cases for communications, each WTRU may, by way of example only, User Equipment (UE), mobile station, fixed or mobile subscriber unit, radio paging device, Mobile phones, personal digital assistants (PDAs), smartphones, Laptops, tablets, netbooks, notebook computers, personal computers computers, wireless sensors, home appliances, smart watches, smart clothing, etc. wearable devices, medical and eHealth devices, robots, industrial equipment, drones, vehicles, including automobiles, trucks, trains, aircraft, and other transportation equipment that transmits or transmits radio signals. Including or embodied in any apparatus or device configured to receive It is understood that this may be done.

[0124] The communications system 100 may further include a base station 114a and a base station 114b. The base station 114a is in wireless communication with at least one of the WTRUs 102a, 102b, and 102c. Wired interface to the core network 106 / 107 / 109 and the Internet access to one or more communications networks, such as 110 or other networks 112 The base station 114b may be any type of device configured to facilitate Remote Radio Heads (RRH) 118a, 118b and transmitting / receiving points Transmission and Reception Point (TRP) 119a, 119b At least one wired or wireless interface with the core network 106 / 107 / 109, the Internet 110, or other networks 112. It may be any type of device configured to facilitate access to a network. The RRHs 118a and 118b wirelessly interface with at least one of the WTRUs 102c. In this way, the core network 106 / 107 / 109, the Internet 110, and other to facilitate access to one or more communication networks, such as other networks 112. The TRPs 119a and 119b may be any type of device configured to wirelessly interface with at least one of the TRUs 102d to connect to the core network 10 One or more networks such as 6 / 107 / 109, the Internet 110, or other networks 112 Any type of device configured to facilitate access to a communications network on As an example, the base stations 114a, 114b may be base transceiver stations. (Base Transceiver Station: BTS), Node B, eNode B, Home Node B, eNodeB, site controller, access point (AP), wireless Each of the base stations 114a, 114b is shown as a single element. Although shown, base stations 114a, 114b may be any number of interconnected base stations or networks. It will be understood that the text may include a line element.

[0125] The base station 114a may be part of the RAN 103 / 104 / 105, and the RAN 103 / 104 / 105 also acts as a Base Station Controller (BSC ), Radio Network Controller (RNC), Relay Node The base station 114b may include other base stations and network elements (not shown), such as a It may be part of RAN 103b / 104b / 105b, and RAN 103b / 104b / 105b also includes base station controllers (BSCs), radio network controllers ( RNC), relay nodes, and other network elements (not shown). The base station 114a provides wireless access within a particular geographic area, sometimes referred to as a cell (not shown). The base station 114b may be configured to transmit and receive signals. A wireless network may be configured to transmit and receive wired and / or wireless signals within a particular geographic area. The cell may be further divided into cell sectors. For example, the cell sectors associated with base station 114a The cell may be divided into three sectors. In one embodiment, the base station 114a , thus including, for example, three transceivers, one for each sector of the cell. In one embodiment, the base station 114a is a multiple input multiple output (MIO) Multiple Output (MIMO) technology can be adopted, so that each section of the cell Multiple transceivers per data source may be utilized.

[0126] The base station 114a communicates with one or more of the WTRUs 102a, 102b, and 102c over the air. They may communicate via interfaces 115 / 116 / 117, and the air interface The sensors 115 / 116 / 117 may be any suitable wireless communication link (e.g., radio frequency o Frequency (RF), microwave, infrared (IR), ultraviolet (Ultraviolet The air interface 11 may be a wavelength (UV, visible light, centimeter wave, millimeter wave, etc.). 5 / 116 / 117 may be constructed using any suitable radio access technology (RAT). can be done.

[0127] The base station 114b is one of the RRHs 118a and 118b and the TRPs 119a and 119b. and communicates with the above via wired or air interfaces 115b / 116b / 117b. The wired or air interface 115b / 116b / 117b may be any suitable Appropriate wired (e.g., cable, optical fiber, etc.) or wireless communication links (e.g., radio frequency Radio frequency (RF), microwave, infrared (IR), ultraviolet (UV), visible light, centimeter wave, millimeter wave The air interface 115b / 116b / 117b may be any It can be built using any appropriate radio access technology (RAT).

[0128] RRH118a, 118b and TRP119a, 119b are expressed by WTRU102c, 102 d via air interface 115c / 116c / 117c. The air interface 115c / 116c / 117c may be any suitable wireless Communications links (e.g., radio frequency (RF), microwave, infrared (IR), ultraviolet (UV) ), visible light, centimeter wave, millimeter wave, etc.). 116c / 117c may be built using any suitable radio access technology (RAT). can be done.

[0129] More specifically, as noted above, communication system 100 may be a multiple access system. For example, Code Division Multiple Access (CDMA), Time Division Time Division Multiple Access (TDMA), Frequency Division Multiple Access (Freq Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (Orthogonal Frequency Division Multiple Access) Frequency Division Multiple Access (OFDMA), single carrier frequency division Single Carrier Frequency Division Multiple Access (SC-FDM) A) and A) can be used. For example, 103 / 104 / 105, the base station 114a and the WTRUs 102a, 102b, and 102c; or RRH118a, 118b and TRP in RAN103b / 104b / 105b 119a, 119b and WTRUs 102c, 102d are universal mobile communication systems. Universal Mobile Telecommunications System (UMTS) Terrestrial Wireless Access (T Wireless technologies such as Universal Radio Access (UTRA) may be implemented. Therefore, the air interface 115 / 116 / using Wideband CDMA (WCDMA) 117 or 115c / 116c / 117c may be constructed respectively. High-Speed ​​Packet Access (HSPA) and evolved HSPA (H HSPA is a high-speed downlink packet exchange (SPA) protocol. High-Speed ​​Downlink Packet Access (HSDPA) and high-speed uplink It can include High-Speed ​​Uplink Packet Access (HSUPA). Cut.

[0130] In one embodiment, the base station 114a and the WTRUs 102a, 102b, 102c, or or RRH118a, 118b and TRP1 in RAN103b / 104b / 105b 19a, 119b and WTRUs 102c, 102d are Evolved UMTS Terrestrial Radio Access ( It may also implement wireless technologies such as E-UTRA, which may provide Long Term Evolution Air interface using LTE Solution (LTE) and LTE Advanced (LTE-A) Even if you build the base 115 / 116 / 117 or 115c / 116c / 117c respectively In the future, the air interfaces 115 / 116 / 117 will implement 3GPP NR technology. It may also be worn.

[0131] In one embodiment, the base station 114a and the WTRU in the RAN 103 / 104 / 105 RRH in 102a, 102b, 102c or RAN 103b / 104b / 105b 118a, 118b and TRP119a, 119b and WTRU102c, 102d IEEE 802.16 (e.g., Worldwide Interoperability for Worldwide Interoperability for Microwave Access :WiMAX)), CDMA2000, CDMA2000 1X, CDMA2000 evolution Evolution-Data Optimized (EV-DO), Interim Standard rd:IS)2000 (IS-2000), Interim Standard 95 (IS-95), Interim Standard 856 (IS-856), Global System for Mobile Communications Communications (GSM), Enhanced Data Rates for GSM for GSM Evolution: EDGE), GSM EDGE (GSM EDGE wireless access wireless technologies such as GSM EDGE Radio Access Network (GERAN) may be implemented.

[0132] The base station 114c in FIG. 22 is, for example, a wireless router, a home NodeB, a home eNodeB , or an access point, and may be a local area such as a business, home, vehicle, or campus. Any suitable RAT for facilitating wireless connectivity in the network may be utilized. In this state, base station 114c and WTRU 102e communicate with each other using a wireless standard such as IEEE 802.11. Implementing wired technology to create a Wireless Local Area Network (WLAN) In one embodiment, the base station 114c and the WTRU 10 2d implements wireless technologies such as IEEE 802.15 to create wireless personal area networks. A Wireless Personal Area Network (WPAN) may also be constructed. In another embodiment, the base station 114c and the WTRU 102e communicate with each other via cellular-based RA. T (e.g., WCDMA, CDMA2000, GSM, LTE, LTE-A, etc.) As shown in FIG. 22, the base station 114 b may be directly connected to the Internet 110. In this way, the base station 114c through the core network 106 / 107 / 109 to access the internet 110 There is no need to do so.

[0133] RAN103 / 104 / 105 and RAN103b / 104b / 105b are core networks It can communicate with the core network 106 / 107 / 109. 9 is for voice, data, applications, and Voice over Internet Protocol (Vo VoIP (Voice Over Internet Protocol) and other services are provided by the WTRU102a and 10 2b, 102c, and 102d. For example, the core network 106 / 107 / 109 may be a network for call control, Ring service, mobile location services, prepaid calling, internet connection It provides connectivity, video streaming, and performs advanced security functions such as user authentication. It can be done.

[0134] Although not shown in FIG. 22, RAN103 / 104 / 105 and RAN103b / 104b / 105b and core network 106 / 107 / 109 are RAN103 / 104 / 10 5 or RAN103b / 104b / 105b, or a different RAT. It will be appreciated that the RAN may communicate directly or indirectly with other RANs. The network 106 / 107 / 109 is a RAN1 that can use E-UTRA radio technology. Not only is it connected to RAN03 / 104 / 105 and RAN103b / 104b / 105b It can also communicate with another RAN (not shown) that employs GSM radio technology.

[0135] The core network 106 / 107 / 109 includes the WTRUs 102a, 102b, and 102c. , 102d, 102e are connected to the PSTN 108, the Internet 110, or other networks. It can also act as a gateway to access 112. is a circuit-switched telephone line that provides Plain Old Telephone Service (POTS). The Internet 110 may include the TCP / IP internet protocol. Transmission Control Protocol (TCP) in the suite, User Datagram Protocol (UDP), Internet Protocol Interconnected networks that use common communication protocols such as the Internet Protocol (IP). It may include a global system of connected computer networks and devices. Network 112 is a wired or wireless communication network owned or operated by another service provider. For example, the network 112 may include the RANs 103 / 104 / 105 and RAN 103b / 104b / 105b may use the same RAT or a different RAT. It may include a separate core network connected to one or more RANs.

[0136] Some of the WTRUs 102a, 102b, 102c, and 102d in the communication system 100 Or all may have multi-mode capabilities. 2c, 102d, and 102e are connected to different wireless networks via different wireless links. For example, the WTRU 102 shown in FIG. e includes a base station 114a that may employ cellular-based wireless technology, and an IEEE 802.11a wireless communication system. It may be configured to communicate with a base station 114c that may employ wireless technology.

[0137] FIG. 23 illustrates a wireless communication system, e.g., a wireless transmission receiver (WTR), configured for wireless communication in accordance with embodiments described herein. 23 is a block diagram of an example of an apparatus or device such as U102. The WTRU 102 includes a processor 118, a transceiver 120, and a transmit / receive element 122. , a speaker / microphone 124, a keypad 126, and a display / touch panel a head / indicator 128, a non-removable 130, a removable memory 132, Power supply 134 and Global Positioning System (G The WTRU may include a PS chipset 136 and other peripherals 138. 102 may include any sub-combination of the above elements while remaining consistent with an embodiment. It will be understood that the base station 11 may include the above-mentioned functions. 4a, 114b, and the nodes that the base stations 114a, 114b may represent (e.g., among others). Base Transceiver Station (BTS), Node B, Site Controller, Access Point (A P), Home Node B, Evolved Home Node B (eNodeB ), Home Evolved Node-B (HeNB), Home Evolved Node B Gateway, and proxy nodes) are shown in Figure 23. It is contemplated that the present invention may include some or all of the elements shown and described herein. do.

[0138] The processor 118 may be a general-purpose processor, a special-purpose processor, a conventional processor, a digital Digital Signal Processor (DSP), multiple microprocessors one or more microprocessors, controllers, or microcontrollers associated with a DSP core controller, Application Specific Integrated Circuit (AS) IC), Field Programmable Gate Array (Field Programmable Gate Array) FPGA (Field Programmable Gate Array) circuits, any other type of Integrated Circuit (IC), state machines The processor 118 may be configured to enable the WTRU 102 to operate in a wireless environment. signal coding, data processing, power control, input / output processing, or any other function The processor 118 may be coupled to a transceiver 120. , the transceiver 120 may be connected to the transmit / receive element 122. FIG. Although the processor 118 and transceiver 120 are shown as separate components, It will be appreciated that the transceiver 120 may be integrated into a single electronic package or chip. It will be possible.

[0139] The transmit / receive element 122 communicates with a base station ( For example, it may be configured to transmit and receive signals to and from a base station 114a. In this embodiment, the transmit / receive element 122 is an antenna configured to transmit and receive RF signals. In one embodiment, the transmit / receive element 122 may be, for example, an IR, UV, or UV-sensitive element. It may be an emitter / detector configured to transmit and receive visible light signals. In one embodiment, the transmit / receive element 122 is adapted to transmit and receive both RF and optical signals. The transmit / receive element 122 may be configured to transmit and receive any combination of wireless signals. It will be understood that it can be configured as follows.

[0140] Additionally, although the transmit / receive element 122 is illustrated in FIG. 23 as a single element, the WTRU The WTRU 102 may include any number of transmit / receive elements 122. More specifically, the WTRU 102 may employ MIMO technology. As such, in one embodiment, the WTRU 102 The radio signal is transmitted via the air interface 115 / 116 / 117 via two or more The transmitter / receiver element 122 (e.g., multiple antennas) may be included.

[0141] The transceiver 120 modulates the signals transmitted by the transmit / receive element 122, and the transmit / receive element 122 As mentioned above, the WTRU 102 may be configured to demodulate the received signal. Thus, the transceiver 120 may be configured to allow the WTRU 102 to, for example, It supports multiple RATs, such as UTRA and IEEE 802.11. The transceiver may include:

[0142] The processor 118 of the WTRU 102 controls the speaker / microphone 124 and the keypad. 126 and a display / touchpad / indicator 128 (e.g., LCD display) (Liquid Crystal Display: LCD) display unit or Organic Light Emitting Diode (Organi c) a Light-Emitting Diode (OLED) display unit, from which the user can The processor 118 can receive input data. The processor 118 can transmit the user data to the speaker / matrix. Microphone 124, keypad 126, display / touchpad / indicator 1 28. Additionally, the processor 118 may be configured to output to a non-removable 130 or removable Access information from any type of suitable memory, such as removable memory 132, and The non-removable memory 130 can also store data in a random access memory (Ra Random-Access Memory (RAM), Read-Only Memory (ROM), It may include a hard disk, or any other type of storage device. 132 is a Subscriber Identity Module (SIM) card, memory This may include a memory stick, Secure Digital (SD) memory card, etc. In one embodiment, the processor 118 is a processor, such as a server or a home computer. access information from memory on a computer (not shown) that is not physically located on the WTRU 102 You may access the data and store it there.

[0143] The processor 118 may receive power from a power supply 134 and may be powered by other processors within the WTRU 102. The power supply 134 may be configured to distribute and control power to the components of the , may be any suitable device for providing power to the WTRU 102. The source 134 may include one or more dry cell batteries, solar cells, fuel cells, and the like.

[0144] The processor 118 may generate location information (e.g., longitude and The GPS chipset 136 may also be configured to provide the GPS coordinates (latitude, The WTRU 102 may use information in addition to, or instead of, the GPS chipset 136. In addition, the base stations (e.g., base stations 114a, 114b) communicate with the air interface 115 / Receive location information via 116 / 117 or receive signals from two or more nearby base stations. The WTRU 102 can determine its own location based on the timing of the signal. , while remaining consistent with an embodiment, position information may be provided by any suitable position determination method. It will be understood that it may be possible to obtain

[0145] The processor 118 may further be connected to other peripherals 138, Peripheral device 138 may include one or more software components that provide additional features or functionality, or wired or wireless connectivity. For example, peripheral device 138 may include a , various sensors such as accelerometers and biometric (e.g., fingerprint) sensors, and electronic compasses (e-Comp ass), satellite transceiver, digital camera (for photos or videos), universal serial Universal Serial Bus (USB) port or other interconnection interface devices, vibration devices, television transceivers, hands-free headsets, bluetooth Bluetooth (registered trademark) module, Frequency Modulated FM) radio units, digital music players, media players, video game players It may include modules, internet browsers, etc.

[0146] The WTRU102 is ideal for sensors, consumer electronics, smartwatches and smart clothing. wearable devices such as gadgets, medical and eHealth devices, robotics, industrial other devices or equipment, such as drones, cars, trucks, trains, aircraft, or other transportation equipment. The WTRU 102 may be embodied in such an apparatus or device. Other components, modules, or systems of the device may include one of the peripherals 138. connected via one or more interconnection interfaces, such as an interconnection interface This may also be done.

[0147] FIG. 24 is a system diagram of the RAN 103 and the core network 106 according to one embodiment. As mentioned above, the RAN 103 employs UTRA radio technology to The WTRUs 102a, 102b, and 102c may communicate with each other via the interface 115. The RAN 103 may also communicate with a core network 106. As shown in Figure 24, The RAN 103 may include Node Bs 140a, 140b, and 140c, and Node B 40a, 140b, and 140c are connected to the WTRUs 102a, 102b, and 102c, respectively. may include one or more transceivers for communicating over the air interface 115. Each of the Node Bs 140a, 140b, and 140c can be a specific The RAN 103 may be associated with a cell (not shown). While remaining consistent with an embodiment, the RAN 103 may further include any of the following: It will be appreciated that the system may include any number of Node Bs and RNCs.

[0148] As shown in FIG. 24, Node Bs 140a and 140b are in communication with RNC 142a. Additionally, Node B 140c can communicate with RNC 142b. 40b, 140c communicate with the RNCs 142a, 142b via the Iub interface. RNCs 142a and 142b can communicate with each other via the Iur interface. Each of the RNCs 142a and 142b can communicate with each other through the Each of the nodes B140a, B140b, and B140c may be configured to control the other nodes B140a, B140b, and B140c. Each of the RNCs 142a and 142b performs external loop power control, load control, admission control, packet packet scheduling, handover control, macro diversity, security functions, It may be configured to perform or support other functions, such as data encryption.

[0149] The core network 106 shown in FIG. 24 includes a media gateway (M GW) 144 and Mobile Switching Center (MSC) 146 and serving General Packet Radio Service (GPRS) Serving GPRS Support Node (SGSN) 148 and Gateway GPRS Support Node (GGSN) 150 Each of the above elements may include at least one of the following: Although illustrated as parts, none of these elements are part of the core network operator. It will be understood that the information contained herein may be owned or operated by an entity other than the data processor.

[0150] RNC 142a in RAN 103 communicates with the core network via the IuCS interface. The MSC 146 may be connected to the MGW 144. The MSC 146 and the MGW 144 may be connected to a circuit-switched network such as the PSTN 108. providing WTRUs 102a, 102b, and 102c with access to the network a, 102b, 102c and traditional fixed wired communication devices. Cut.

[0151] RNC 142a in RAN 103 communicates with the core network via the IuPS interface. The SGSN 148 may be further connected to a GGSN 148 in the network 106. 150. The SGSN 148 and the GGSN 150 may be connected to the Internet 110. WTRUs 102a, 102b, and 102c to access packet-switched networks such as to facilitate communication between the WTRUs 102a, 102b, 102c and IP-enabled devices. It can be made smooth.

[0152] As mentioned above, the core network 106 may be owned and operated by other service providers. The network 112 may further include a wired or wireless network. .

[0153] FIG. 25 is a system diagram of the RAN 104 and the core network 107 according to one embodiment. As mentioned above, the RAN 104 employs E-UTRA radio technology to The WTRUs 102a, 102b, and 102c can communicate with each other via the interface 116. The RAN 104 may also communicate with a core network 107.

[0154] The RAN 104 may include eNodeBs 160a, 160b, and 160c. It should be understood that 4 may include any number of eNodeBs while remaining consistent with an embodiment. It will be understood that the eNodeBs 160a, 160b, and 160c each 02a, 102b, 102c for communicating over the air interface 116. In one embodiment, the eNodeB 160a, 160b, 160c may implement MIMO technology. WTRU 102a may transmit wireless signals to WTRU 102a, for example, using multiple antennas. From here, radio signals can be received.

[0155] Each of the eNodeBs 160a, 160b, 160c is associated with a particular cell (not shown). This may be used for radio resource management decisions, handover decisions, uplink and downlink The system may be configured to handle tasks such as scheduling users in the network. As shown in Figure 5, the eNodeBs 160a, 160b, and 160c use the X2 interface. They can communicate with each other via this.

[0156] The core network 107 shown in FIG. 25 includes a mobility management gateway (MME) 16 2, a serving gateway 164, and a packet data network (Packet Data Each of the above elements can include a Core Network (PDN) Gateway 166. Although shown as part of the network 107, none of these elements are part of the core network. It is understood that the Network Operator may be owned or operated by an entity other than the Network Operator. There will be.

[0157] The MME 162 communicates with the eNodeB 160a in the RAN 104 via the S1 interface. , 160b, 160c, and may function as control nodes. For example, the MME 162 performs authentication of users of the WTRUs 102a, 102b, and 102c, bearer Activation / deactivation of WTRUs 102a, 102b, and 102c, and initial attack The MME 162 may also be responsible for selecting a specific serving gateway during the call. , and further, the RAN 104 and other RANs using other wireless technologies such as GSM and WCDMA. (not shown) may provide a control plane function for switching between

[0158] The serving gateway 164 communicates with the RAN 104 via the S1 interface. The eNodeBs 160a, 160b, and 160c may be connected to each of the eNodeBs 160a, 160b, and 160c. The way 164 generally transmits user data packets to the WTRUs 102a, 102b, 102c, and 102d. It can be routed and forwarded to and from c. The eNodeB gateway 164 further controls user play during handover between eNodeBs. anchoring, WTRUs 102a, 102b, and 102c can use downlink data triggering paging when possible, and the context of the WTRUs 102a, 102b, and 102c It may perform other functions such as managing and storing text.

[0159] The serving gateway 164 may also be connected to a PDN gateway 166. Typically, the PDN gateway 166 is a gateway that connects a packet-switched network such as the Internet 110. providing WTRUs 102a, 102b, and 102c with access to the network a, 102b, 102c and IP-enabled devices.

[0160] The core network 107 may facilitate communication with other networks. For example, the core network 107 provides access to a circuit-switched network such as the PSTN 108. WTRUs 102a, 102b, and 102c. , 102c and traditional fixed wired communication devices. The core network 107 is an interface between the core network 107 and the PSTN 108. IP gateways that act as interfaces (for example, IP Multimedia Subsystems ( may contain or communicate with an IP Multimedia Subsystem (IMS) server Additionally, the core network 107 may include wired or wireless networks owned and operated by other service providers. The WTRU 102 provides access to the network 112, which may include a wireless communication network. a, 102b, and 102c.

[0161] FIG. 26 is a system diagram of the RAN 105 and the core network 109 according to one embodiment. The RAN 105 uses IEEE 802.16 wireless technology to an access service that communicates with the WTRUs 102a, 102b, and 102c via an interface 117; It may also be an Access Service Network (ASN), as discussed further below. As shown, the WTRUs 102a, 102b, and 102c, the RAN 105, and the core network The communication links between different functional entities with the network 109 can be defined as reference points. can.

[0162] As shown in FIG. 26, the RAN 105 includes base stations 180a, 180b, and 180c and an ASN gateway. While the RAN 105 may include a gateway 182, the RAN 105 may, while remaining consistent with an embodiment, It will be appreciated that the base station may include any number of base stations and ASN gateways. 180a, 180b, and 180c are each associated with a particular cell within the RAN 105. WTRUs 102a, 102b, 102c may be connected via air interface 117. In one embodiment, the base may include one or more transceivers for communicating with the The base stations 180a, 180b, 180c may implement MIMO technology. The base station 180a may, for example, use multiple antennas to transmit wireless signals to the WTRU 102a. The base stations 180a, 180b, 180c, and 180d can transmit and receive radio signals from each other. c also handles handoff triggering, tunnel establishment, radio resource management, traffic It provides mobility management functions such as network classification and Quality of Service (QoS) policy enforcement. The ASN gateway 182 can act as a traffic aggregation point. paging, caching of subscriber profiles, routing to the core network 109 It can control things like ting.

[0163] Air interface 1 between WTRUs 102a, 102b, 102c and RAN 105 17 can be defined as the R1 reference point that implements the IEEE 802.16 specification. Additionally, each of the WTRUs 102a, 102b, and 102c communicates with the core network 109. A management interface (not shown) can be established between the WTRUs 102a, 102b. , 102c and the core network 109 for authentication, authorization, Define an R2 reference point that can be used for IP host configuration management and mobility management. It is possible.

[0164] The communication link between each of the base stations 180a, 180b, 180c is defined by a WTRU between the base stations. R8 is defined as a reference point, including protocols to facilitate handover and data transfer. The base stations 180a, 180b, and 180c and the ASN gateway 182 The communication link between WTRU1 and WTRU2 may be defined as the R6 reference point. Mobility events associated with each of 02a, 102b, and 102c are used to It may include protocols to facilitate security management.

[0165] As shown in Figure 26, the RAN 105 may be connected to a core network 109. 105 and the core network 109, e.g., for data transfer and mobility. It can be defined as an R3 reference point that includes protocols to promote security management capabilities. The core network 109 includes a Mobile IP Home Agent (MHA). ent:MIP-HA)184 and Authentication, Authorization, and Accounting (Authentication, Authorization, and Accounting) The system may include an Authentication, Authorization, and Accounting (AAA) server 186 and a gateway 188. Although each of the above elements is illustrated as part of the core network 109, these None of the elements are owned or operated by an entity other than the core network operator. It will be understood that this may also be done.

[0166] The MIP-HA can manage IP addresses, and Allowing 02c to roam between different ASNs and different core networks The MIP-HA184 can be used in packet-switched networks such as the Internet110. providing access to the network to the WTRUs 102a, 102b, and 102c, , 102b, 102c and IP-enabled devices. The server 186 may be responsible for user authentication and support of user services. The gateway 188 can facilitate interworking with other networks. For example, the gateway 188 may provide access to a circuit-switched network such as the PSTN 108. WTRUs 102a, 102b, and 102c. , 102c and traditional fixed wired communication devices. , gateway 188 may communicate with wired or wireless communications owned or operated by other service providers. The WTRUs 102a, 102b may access the network 112, which may include a , 102c.

[0167] Although not shown in FIG. 26, the RAN 105 may be connected to other ASNs, and may form a core network. It will be understood that the network 109 may be connected to other core networks. The communication link between AN105 and other ASNs can be defined as an R4 reference point, and R The four reference points are the WTRUs 102a, 102b, and 102c between the RAN 105 and other ASNs. The core network 109 may include protocols for coordinating mobility of the The communication link between the R5 and other core networks can be defined as R5 standard. The standard provides interworking between the home and visited core networks. A facilitation protocol may be included.

[0168] The core network entities described herein and shown in Figures 22, 24, 25 and 26 Entities are identified by the names given to those entities in certain existing 3GPP specifications. Although these entities and functionality may be identified by other names in the future, The specific entities or functionality are defined in the 3GPP NR specifications published by 3GPP. It is understood that these specifications may be combined in future specifications, including The specific network entities and functionality described and illustrated in Figures 22 to 26 are simply The subject matter disclosed and claimed herein is presented by way of example only and is not intended to be limiting unless expressly stated. embodied or implemented in any similar communication system now or hereafter defined It is understood that this may also be done.

[0169] Figure 27 shows, for example, the network topology of a particular node or functional entity within the RAN 103 / 104 / 105. Service, Core Network 106 / 107 / 109, PSTN 108, Internet 1 10, or other networks 112, as shown in FIGS. An exemplary computing system 9 that may embody one or more devices of the network 0. The computing system 90 is a computer or server and may be controlled primarily by computer readable instructions. The instructions may be in the form of software, which may be located anywhere or at any Such computer-readable The instructions are executed within processor 91 to operate computing system 90. The processor 91 may be a general-purpose processor, a special-purpose processor, a conventional processor, Digital Signal Processors (DSPs), multiple microprocessors, and associated DSP cores one or more microprocessors, controllers, microcontrollers, application specific Application-Specific Integrated Circuits (ASICs), Field Programmable Gate Array (FPGA) circuits, The processor 91 may be any other type of integrated circuit (IC), state machine, etc. Signal coding and other features that enable the computing system 90 to operate within a communications network. , data processing, power control, input / output processing, and any other functions. Coprocessor 81 may perform additional functions separate from main processor 91. , or an optional processor that assists processor 91. At least one of the processor 1 and the coprocessor 81 is associated with the methods and apparatus disclosed herein. The system can receive, generate, and process data.

[0170] In operation, processor 91 fetches, decodes, and executes instructions to perform computing Between other resources via the system bus 80, which is the system's main data transfer path. Such a system bus transfers information between the components within the computing system 90. The system bus 80 connects the components and provides a medium for data exchange. data lines for sending addresses, address lines for sending interrupts, It includes control lines for transmitting data and for operating the system bus. An example of a service 80 is a Peripheral Component Interconnect (PCI). :PCI) bus.

[0171] The memories connected to the system bus 80 include a random access memory (RAM) 82 and It includes a read-only memory (ROM) 93. Such memory stores and reads information. ROM 93 generally contains stored data that cannot be easily modified. The data stored in RAM 82 is then transferred to the processor 91 or other hardware. RAM 82 and ROM 9 can be read or changed by the hardware device. Access to at least one of the three may be controlled by the memory controller 92. The memory controller 92 converts virtual addresses into physical addresses as instructions are executed. The memory controller 92 can also provide an address translation function that converts In addition, each process in the system is isolated, and system processes are isolated from user processes. It can provide memory protection. Therefore, programs running in the first mode can only access memory that is mapped by its own process virtual address space. Unless inter-process memory sharing is configured, the virtual It is not possible to access memory within the virtual address space.

[0172] Furthermore, the computing system 90 may be configured to receive instructions from the processor 91, 94, keyboard 84, mouse 95, and disk drive 85. The peripheral controller 83 may include a peripheral device controller 83 that controls communication.

[0173] The display 86 controlled by the display controller 96 is It is used to display the visual output generated by the operating system 90. Such visual output may include text, graphics, animated graphics, and video. The visual output is displayed as a Graphical User Interface. The display 86 may be a cathode ray tube (Cathode-Ray T CRT-based video displays, LCD-based flat panel displays This was implemented using a gas plasma-based flat panel display or touch panel. The display controller 96 controls the video signals sent to the display 86. Contains the electronic components necessary to generate the signal.

[0174] Furthermore, the computing system 90 includes the RAN 103 / 104 shown in FIGS. / 105, Core Network 106 / 107 / 109, PSTN 108, Internet 110, or other networks 112. 90. and other communications circuitry, so that the computing system 90 to be able to communicate with other nodes or functional entities of these networks. The communication circuitry may be used alone or in conjunction with the processor 91 to implement the functions described herein. Execute the sending and receiving steps of the specified device, node, or functional entity. It is possible.

[0175] Any or all of the devices, systems, methods, and processes described herein may: When the instructions are executed by a processor, such as processor 118 or 91, they The described systems, methods, and processes may be executed or implemented by a processor. in the form of computer-executable instructions (e.g., program code) stored on a readable storage medium In particular, it is understood that the steps, operations, or features described herein may be implemented in various ways. or any of the functions configured for wireless and / or wired network communication Such computer programs executed on the processor of a device or computing system The computer-readable storage medium may be implemented in the form of computer-executable instructions. Volatility implemented in any non-transitory (e.g., tangible or physical) method or technology for This includes, but is not limited to, volatile and non-volatile, removable and non-removable media. A computer-readable storage medium does not include a signal. AM, ROM, Electrically Erasable Programmable ROM EEPROM), flash memory or other memory technologies, compact disc ROM ( Compact Disc ROM (CD-ROM), Digital Versatile Disc Disc (DVD) or other optical disk storage, magnetic cassette, magnetic tape, magnetic disc disk storage, or other magnetic storage device, or for storing desired information and can be used to access the computing system This includes, but is not limited to, any other tangible or physical medium.

[0176] appendix

[0177] [Table 1-1] [Table 1-2] [Table 1-3]

[0178] [Table 2]

[0179] Table 3

[0180] Table 4

[0181] Table 5

[0182] Table 6

[0183] Table 7

[0184] Table 8

Claims

1. An apparatus comprising a processor, a memory, and a communication circuit, said apparatus comprising: The device is connected to a network via a path, and the device is configured to store the When executed by the processor of the device, receiving network assistance information; and determining whether to assign uplink channel access based at least in part on the network assistance information. determining the procedure; Execute the uplink channel access procedure to access the uplink channel. And, After accessing the uplink channel, the uplink transmission is performed on the uplink channel. To carry out the faith, The apparatus further comprising computer-executable instructions to cause the apparatus to perform operations including:

2. The apparatus of claim 1 , wherein the network assistance information includes a channel access type. 。

3. The channel access type is a set of channel access types stored in the device. selected from the The device is configured to: one or more channel access procedures are configured from a set of associated with each of the channel access types in the set of types; The channel access procedure is called listen-before-talk (LBT). ) The apparatus according to claim 2 .

4. One or more of the channel access procedures include a random backoff.

4. The device of claim 3.

5. The random backoff function of one or more of the channel access procedures may be at least 5. The apparatus of claim 4, wherein the setting is determined at least in part by a default configuration.

6. the random backoff function of one or more of the channel access procedures; The apparatus of claim 5 further dependent, at least in part, on the alternative configuration.

7. The network assistance information is transmitted via layer 1 signaling or higher layer signaling. The device of claim 1 , wherein the device is signaled.

8. The network support information includes: Medium Access Control Element (MACE) AC CE), or Radio Resource Control (RRC) messaging The device of claim 7, wherein the signaling is via

9. The network assistance information is Downlink Control Information (DCI).

8. The apparatus of claim 7, wherein the information is signaled via a DCI.

10. The DCI is a Cell Radio-Network Temporary Identifier (Cell Radio-Network Temporary Identifier). Network-assisted Radio Network Temporary Identifier (C-RNTI) or Network-assisted Radio Network Temporary Identifier (Ne Network Assistance Radio Network Temporary Identifier (NA-RNTI) 10. The apparatus of claim 9, wherein the signal is scrambled by

11. The DCI is a Physical Random Access Channel (PRACC). A control resource set (Control Resource Set) that precedes the set of PRACH resources.

10. The apparatus of claim 9, wherein the signal is received in a Core Set (CORESET).

12. The CORESET is a physical downlink control channel (PDC). The apparatus of claim 11 , comprising a PDCCH common search space.

13. The PDCCH common search space is a type 0 or type 1 PDCCH common search space. The device of claim 12.

14. 2. The method of claim 1, wherein the uplink transmission corresponds to a random access preamble transmission. The device.

15. The network assistance information and the random access preamble occupy a single channel. A request received by the device within a Channel Occupancy Time (COT).

15. The apparatus of claim 14.

16. The uplink channel access procedure is a random access procedure, and the operation includes: The network assistance information and a trigger for performing the uplink channel procedure. receiving a Physical Downlink Control Channel (PDCCH) command including: performing the uplink channel procedure according to the trigger; The apparatus of claim 1 further comprising:

17. the uplink channel access procedure is a random access procedure; The network assistance information is received from a target wireless network access point. And, The operation is Receiving a handover command from the source wireless network access point And, and performing the uplink channel procedure according to the network assistance information. The device of claim 1 , further comprising:

18. The operation comprises: a random access request including the network assistance information and an uplink grant; 2. The method of claim 1, further comprising receiving a Random Access Response (RAR). The device.

19. The network assistance information is signaled as a field in the RAR uplink grant.

20. The device of claim 18, wherein the device is ringed.

20. The network assistance information is stored in the Media Access Control (MAC) payload of the RAR.

20. The apparatus of claim 18, wherein the information is signaled as a field within a field.

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