two-step random access channel (rach) procedure in millimeter waves (mmw)

专利摘要:
Certain aspects of the present disclosure provide techniques for random access channel (rach) communication. For example, certain aspects provide a method for wireless communication. The method generally includes transmitting a plurality of reference signals using one or more beams, and receiving at least one of a crack preamble and / or a crack payload corresponding to one or more of the reference signals transmitted through at least one. one or more bundles.
公开号:BR112019009472A2
申请号:R112019009472
申请日:2017-11-03
公开日:2019-07-30
发明作者:Cezanne Juergen；Li Junyi；Nazmul Islam Muhammad；Subramanian Sundar；Luo Tao
申请人:Qualcomm Inc；
IPC主号:

专利说明:

TWO STEP RANDOM ACCESS CHANNEL (RACK) PROCEDURE IN MILIMETRIC WAVES (MMW)
CROSS REFERENCE TO RELATED APPLICATIONS [0001] This application claims priority benefit for United States Provisional Application No. 62 / 421,841, filed on November 14, 2016, and United States Patent application No. 15 / 707,520, filed on September 18, 2017; expressly incorporated herein, in full, by reference.
INTRODUCTION [0002] Aspects of the present invention refer to wireless communications and, more particularly, to random access channel (RACH) communication.
[0003] Wireless communication systems are widely organized to provide various telecommunication services, such as telephony, video, data, messages and broadcasts. Typical wireless communication systems can employ multiple access technologies capable of supporting communication with multiple users by sharing available system resources (eg, bandwidth, transmission power). Examples of such multiple access technologies include Long Term Evolution (LTE) systems, code division multiple access systems (CDMA), time division multiple access systems (TDMA), frequency division multiple access systems (FDMA), orthogonal frequency division multiple access systems (OFDMA), single carrier frequency division multiple access systems (SC-FDMA) and synchronous code division multiple access systems by division
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2/61 time (TD-SCDMA).
[0004] In some examples, a wireless multiple access communication system may include a number of base stations, each simultaneously supporting communication to multiple communication devices, otherwise known as user equipment (UEs). In an LTE or LTE-A network, a set of one or more base stations can define an eNodeB (eNB). In other examples (for example, on a next generation or 5G network), a wireless multiple access communication system may include a number of distributed units (DUs) (for example, edge units (EUs), edge nodes (ENs), radio heads (RHs), intelligent radio heads (SRHs), transmit reception points (TRPs), etc.) in communication with a number of central units (CUs) (for example, central nodes (CNs ), access node controllers (ANCs, etc.), where a set of one or more distributed units, in communication with a central unit, can define an access node (for example, a new radio base station (NR BS), a new radio NodeB (NR NB), a network node, 5G NB, gNB, etc.). A base station or DU can communicate with a set of UEs on downlink channels (for example, for transmissions from a base station or for a UE) and uplink channels (for example, for transmissions from a UE to a station base or distributed unit).
[0005] These multiple access technologies have been adopted in various telecommunications standards to provide a common protocol that allows different wireless devices to communicate in a municipal system,
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3/61 national, regional, and even globally. An example of an emerging telecommunications standard is the new radio (NR), for example, 5G radio access and designed to support better access to mobile broadband Internet by improving spectral efficiency, reducing costs, improving services, making use of new spectrum, and better integrating with other open standards using OFDMA with cyclic prefix (CP) in the downlink (DL) and uplink (UL) as well as supporting beam forming technology, multiple input antenna and multiple outputs ( MIMO), and carrier aggregation.
[0006] However, as demand for mobile broadband access continues to increase, there is a need for further improvements in NR technology. Preferably, these improvements should apply to other multiple access technologies and to the telecommunication standards that employ those technologies.
BRIEF SUMMARY [0007] The systems, methods and devices of the invention individually have several aspects, none of which is solely responsible for their desirable attributes. Without limiting the scope of this description, as expressed by the claims that follow, some features will now be discussed shortly. After considering this discussion, and particularly after reading the section entitled Detailed Description, it should be understood how the features of the present invention provide advantages that include improved communications between access points and stations on a wireless network.
[0008] Certain aspects of the present invention
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4/61 provide a method for wireless communication. The method generally includes transmitting a plurality of reference signals using one or more beams, and receiving at least one of a random access channel preamble (RACH) and / or a RACH payload corresponding to one or more of the reference signals transmitted through at least one of one or more beams.
[0009] Certain aspects of the present disclosure provide a method for wireless communications. The method generally includes receiving a plurality of reference signals that are transmitted using one or more beams, determining at least one beam from one or more beams for communicating at least one of a random access channel preamble (RACH) or payload of RACH, and the transmission of at least one of the preamble to RACH or the payload of RACH based on the determination.
[0010] Certain aspects of the present invention provide a method for wireless communications. The method generally includes detecting a random access channel preamble (RACH) that corresponds to one of a plurality of reference signals, in which the plurality of reference signals is transmitted through one or more beams, determining a configuration to monitor by
one less of the bundles corresponding detection of preamble from RACH, and monitor at least one From bundles based on determination. [0011] Certain aspects gives gift invention
provide a device for wireless communication. The apparatus generally includes a transmitter configured to transmit a plurality of reference signals
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5/61 using one or more beams, and a receiver configured to receive at least one of a random access channel preamble (RACH) and / or a RACH payload corresponding to one or more of the reference signals transmitted through at least minus one of one or more bundles.
[0012] Certain aspects of the present invention provide an apparatus for wireless communications. The apparatus generally includes a receiver configured to receive a plurality of reference signals that are transmitted using one or more beams, a processing system configured to determine at least one beam from one or more beams to communicate at least one of a preamble of a radio channel. random access (RACH) or a RACH payload and a transmitter configured to transmit at least one of the RACH preamble or the RACH payload based on the determination.
[0013] Certain aspects of the present invention provide an apparatus for wireless communications. The apparatus generally includes a processing system configured to detect a random access channel preamble (RACH) that corresponds to one of a plurality of reference signals, wherein the plurality of reference signals is transmitted through one or more beams, and determining a configuration to monitor at least one of the beams corresponding to the detection of the RACH preamble and a configured detector to monitor at least one of the beams based on the determination.
[0014] Certain aspects of the present invention provide an apparatus for wireless communication. The apparatus generally includes means for transmitting a
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6/61 plurality of reference signals using one or more beams, and means for receiving at least one of a random access channel preamble (RACH) and / or a RACH payload corresponding to one or more of the transmitted reference signals through at least one of one or more bundles.
[0015] Certain aspects of the present invention provide an apparatus for wireless communications. The apparatus generally includes means for receiving a plurality of reference signals that are transmitted using one or more beams, means for determining at least one beam from one or more beams to communicate at least one of a random access channel preamble (RACH) or a RACH payload; and means for transmitting at least one of the RACH preamble or the RACH payload based on the determination.
[0016] Certain aspects of the present invention provide an apparatus for wireless communications. The apparatus generally includes means for detecting a preamble of random access channel (RACH) which corresponds to one of a plurality of reference signals, in which the plurality of reference signals is transmitted through one or more beams, means for determining a configuration to monitor at least one of the beams corresponding to the detection of the RACH preamble; and means for monitoring at least one of the beams based on the determination.
[0017] Certain aspects of the present invention provide a computer-readable medium configured to transmit a plurality of reference signals using one or more beams, and receive at least one from one
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Ί / 61 random access channel preamble (RACH) and / or a RACH payload corresponding to one or more of the reference signals transmitted through at least one of one or more beams.
[0018] Certain aspects of the present invention provide a computer-readable medium configured to receive a plurality of reference signals that are transmitted using one or more beams, to determine at least one beam from one or more beams to communicate at least one among a preamble random access channel (RACH) or RACH payload, and transmit at least one of the RACH preamble or RACH payload based on the determination.
[0019] Certain aspects of the present invention provide a computer-readable medium configured to detect a random access channel preamble (RACH) that corresponds to one of a plurality of reference signals, wherein the plurality of reference signals is transmitted via of one or more beams, determine a configuration to monitor at least one of the beams corresponding to the detection of the RACH preamble, and monitor at least one of the beams based on the determination.
[0020] For the realization of the preceding and related purposes, the one or more aspects comprise the characteristics hereinafter fully described and particularly pointed out in the claims. The following description and the accompanying drawings present in detail certain illustrative aspects of one or more aspects. These characteristics are
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8/61 indicative, however, of only a few of the various ways in which the principles of various aspects can be employed, and this description is intended to include all aspects and their equivalents.
BRIEF DESCRIPTION OF THE DRAWINGS [0021] In order for the form in which the aforementioned features of the present invention can be understood in detail, a more particular description, briefly summarized above, can be obtained by reference to aspects, some of which are illustrated in the drawings attached. It should be noted, however, that the attached drawings illustrate only certain aspects typical of this disclosure and should not, therefore, be considered as limiting its scope, since the description may admit other equally effective aspects.
[0022] Figure 1 is a block diagram that conceptually illustrates an illustrative telecommunications system, according to certain aspects of the present disclosure.
[0023] Figure 2 is a block diagram that illustrates an exemplary logical architecture of a distributed RAN, according to certain aspects of the present disclosure.
[0024] Figure 3 is a diagram that illustrates an exemplary physical architecture of a distributed RAN, according to certain aspects of the present disclosure.
[0025] Figure 4 is a diagram . of blocks what illustrates conceptually a project on one device in occupation in access node exemplary (ANF) and device in occupation in equipment user (UEF), according with
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9/61 certain aspects of the present disclosure.
[0026] Figure examples to implement communication, according to disclosure.
[0027] The subframe Figure centered on DL, of the present invention.
[0028] The Figure subframe centered on UL, of this revelation.
[0029] Figure assets, according to certain [0030] Figure 9 is a diagram showing a stack of protocols of certain aspects of this illustrates an example of an agreement with certain aspects of illustrates an example of an agreement with certain aspects of illustrates an example of bundle aspects of the present invention.
a timing diagram illustrating an example of a four-step random access channel (RACH) procedure, in accordance with certain aspects of the present disclosure.
[0031] Figure 10 is a diagram of an exemplary uplink communication of a four-step RACH procedure, in accordance with certain aspects of the present disclosure.
[0032] Figure 1 is a timing diagram that illustrates an example of a two-step RACH procedure, according to certain aspects of the present disclosure.
[0033] Figure 12 is a diagram of an exemplary uplink communication of a two-step RACH procedure, in accordance with certain aspects of the present disclosure.
[0034] Figure 13 is an exemplary diagram that
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10/61 illustrates different modes of operations for a UEF device, according to certain aspects of the present disclosure.
[0035] Figure 14 illustrates exemplary operations for wireless communication by an ANF device, in accordance with certain aspects of the present disclosure.
[0036] Figure 15 illustrates exemplary operations for wireless communication by an UEF device, in accordance with certain aspects of the present disclosure.
[0037] Figure 16 is a diagram illustrating the exemplary synchronization message (SYNC) and RACH communication, according to certain aspects of the present disclosure.
[0038] Figure 17 is a diagram illustrating an exemplary RACH message communication using time division multiplexing (TDM), in accordance with certain aspects of the present disclosure.
[0039] Figure 18 is a diagram illustrating an exemplary RACH message communication for a two-step RACH procedure using
multiplexing by division frequency (FDM) , according with certain aspects of this revelation.[ 0040] Figure 19 illustrates operations copies for indicate subpose resources tadora for Communication without wire according to certain aspects of
present revelation.
[0041] The figure 20 illustrates operations copies for receive a indication of resources of
wireless carrier, in accordance with certain aspects of this disclosure.
[0042] Figure 21 illustrates exemplary operations to determine a RACH procedure, from
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11/61 according to certain aspects of the present disclosure.
[0043] Figure 22 illustrates exemplary operations for monitoring a RACH message, in accordance with certain aspects of the present disclosure.
[0044] Figure 23 is a diagram that illustrates an exemplary protocol for monitoring a RACH message, according to certain aspects of the present disclosure.
[0045] To facilitate understanding, identical reference numerals were used, where possible, to designate identical elements that are common to the figures. It is considered that the elements described in one aspect can be used beneficially in other aspects without specific mention.
DETAILED DESCRIPTION [0046] Aspects of the present invention provide apparatus, methods, processing systems, computer-readable means for random access channel (RACH) communication.
[0047] Certain aspects of the present invention can be applied to a new radio (QUR) (new radio access technology or 5G technology). NR can support various wireless communication services, such as enhanced mobile broadband (eMBB) targeting bandwidth services (for example, in addition to 80 MHz), millimeter wave (mmW) targeting high frequency carrier (for example , 60 GHz), massive MTC (mMTC) targeting compatible non-retroactive MTC techniques, and / or a mission-critical targeting of low latency communications (URLLC). These services may include latency and reliability requirements. These services may also have
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12/61 different transmission time intervals (TTI) to satisfy quality of service (QoS) requirements. In addition, these services can coexist in the same subframe.
[0048] The following description provides examples, and is not limiting the scope, applicability, or examples presented in the claims. Changes can be made to the function and arrangement of elements discussed without departing from the scope of the invention. Various examples may omit, replace, or add various procedures or components as appropriate. For example, the methods described can be performed in a different order than described, and several steps can be added, omitted or combined. In addition, features described with respect to some examples can be combined in some other examples. For example, an apparatus can be implemented or a method can be practiced using any number of aspects set out here. In addition, the scope of the invention is intended to cover such an apparatus or method that is practiced using another structure, functionality, or structure and functionality in addition to the various aspects of the disclosure presented herein. It should be understood that any aspect of the disclosure presented herein may be incorporated by one or more elements of a claim. The word exemplary is used here to mean serving as an example, case, or illustration. Any aspect described here as exemplary should not necessarily be considered as preferred or advantageous over other aspects.
[0049] The techniques described here can be used for various wireless communication networks such as
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13/61 such as LTE, CDMA, TDMA, FDMA, OFDMA, SC-FDMA and / other networks. The terms network and system are often used interchangeably. A CDMA network can implement radio technology such as Universal Terrestrial Radio Access (UTRA), cdma2000, etc. UTRA includes Broadband CDMA (WCDMA) and / other CDMA variants. Cdma2000 covers the IS-2000, IS-95 and IS-856 standards. A TDMA network can implement radio technology such as the Global System for Mobile Communications (GSM). An OFDMA network can implement radio technology such as NR (for example, 5G RA) Evolved UTRA (e-UTRA), UltraMobile Broadband (UMB), IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20 , Flash-OFDMA, etc. UTRA AND E-UTRA are part of the Universal Mobile Telecommunications System (UMTS). NR is an emerging wireless communications technology being developed in conjunction with the 5G Technology Forum (5 GTF). Long Term Evolution 3GPP (LTE) and LTE-Advanced (LTE-A) are versions of UMTS that use E-UTRA. UTRA, EUTRA, UMTS, LTE, LTE-A and GSM are described in documents from an organization called the 3rd Generation Partnership Project (3GPP). Cdma2000 and UMB are described in documents from an organization called 3rd generation partnership project 2 (3GPP2). The techniques described here can be used for the wireless networks and radio technologies mentioned above as well as other wireless networks and radio technologies. For clarity, although aspects can be described here using terminology commonly associated with 3G and / or 4G wireless technologies, aspects of the present invention can be applied to other generation-based communication systems, such as 5G and
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14/61 later, including NR technologies.
EXEMPLARY WIRELESS COMMUNICATION SYSTEM [0050] Figure 1 illustrates an exemplary wireless network 100 in which aspects of the present disclosure can be realized. For example, the wireless network can be a new radio (NR) or 5G network. Wireless NR communication systems can employ beams, where an access node function device (ANF) and the user equipment function device (UE) communicate through active beams. In some aspects, an ANF device may comprise a base station (BS), an access network or a return transport channel node with BS functionality for an integrated access return transport system. In certain aspects, a UEF device can be a user equipment (UE) for an access network or a return transport channel node with UE functionality for an integrated access return transport system. As described here, an ANF device can monitor active beams using reference signal measurements (for example, MRS, CSI-RS, synch) transmitted through reference beams.
[0051] UEF 120 devices can be configured to perform operations 1000 and methods described here for the detection of mobility events based, at least in part, on mobility parameters associated with a set of beams. The ANF device 110 may comprise a transmission receiving point (TRP), Node B (NB), 5G NB, access point (AP), new radio ANF device (NR), etc. The ANF 110 device can be configured to perform operations
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15/61
900 and methods described here for configuring bundle sets and mobility parameters associated with each bundle set. The ANF device can receive an indication of a detected mobility event based on the mobility parameters and can make a decision on the mobility management of the UEF device based on
on the event. [0052] How illustrated in Figure 1, the network without 100 thread can include a number of BSs 110 and others network entities. a ANF device can to be an season that communicates with devices of UEF. Each
ANF 110 device can provide communication coverage for a specific geographic area. In 3GPP, the term cell can refer to a coverage area of a Node B and / or a subsystem of Node B that serves that coverage area, depending on the context in which the term is used. In NR systems, the term cell and gNB, Node B, 5G, AP, NR ANF device, NR ANF device, or TRP can be interchangeable. In some instances, a cell may not necessarily be stationary, and the cell's geographical area may move according to the location of a mobile base station. In some examples, base stations can be interconnected to one another and / or to one or more other base stations / or network nodes (not shown) on wireless network 100 through various types of return transport channel interfaces such as as a direct physical connection, virtual network, or similar, using any suitable transport network.
[0053] In general, any number of wireless networks can be implemented in a given geographical area. Each
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16/61 wireless network can support specific radio access technology (RAT) and can operate on one or more frequencies. A RAT can also be referred to as a radio technology, an air interface, etc. a frequency can also be referred to as a carrier, a frequency channel, etc. Each frequency can support a
only RAT in a given area geographic in order to avoid interference between networks without thread in many different RATs. In some cases, RAT networks in NR or 5G can be developed.[0054] One device in ANF can to provide coverage of communication for an macro cell, a peak
cell, a femto cell, and / or other types of cells. A macro cell can cover a relatively large geographic area (for example, several kilometers in radius) and can allow unrestricted access by UEF devices with a service subscription. A peak cell can cover a relatively small geographic area and can allow unrestricted access by subscribed service UEF devices. A femto cell can cover a relatively small geographic area (for example, a house) and can allow restricted access by UEF devices having association with the femto cell (for example, UEF devices in a closed group of subscribers (CSG), with UEs for users in the home, etc.). An ANF device for a macro cell can be referred to as an ANF macro device. The ANF device for a peak cell can be referred to as a peak ANF device. An ANF device for a femto cell can be referred to as an ANF femto device or an
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17/61 of domestic ANF. In the example shown in Figure 1, BSs 110a, 110b and 110c can be macro ANF devices for macro cells 102a, 102b and 102c, respectively. The ANF 11x device can be a BS peak for a 102x cell peak. The ANF IlOy and 11Oz devices may be FEMto ANF devices for the 102y and 102z femto cells, respectively. An ANF device can support one or multiple (for example, three) cells.
[0055] Wireless network 100 may also include relay stations. A relay station is a station that receives a transmission of data and / or other information from an upstream station (for example, ANF device or UEF device) and sends a transmission of data and / or other information to a station to downstream (for example, a UEF device or an ANF device). A relay station can also be a UEF device that transfers transmissions to other UEF devices. In the example shown in FIG. 1, a HOr relay station can communicate with the ANF device 110a and an UEF device 120r in order to facilitate communication between the ANF device 110a and the UEF device 120r. A relay station can also be referred to as an ANF relay station, a relay, etc.
[0056] The wireless network 100 can be a heterogeneous network that includes BSs of different types, for example, macro device of ANF, peak device of ANF, femto device of ANF, retransmitters, etc. These different types of ANF devices can have different levels of transmission power, different areas of transmission
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18/61 coverage, and different impact on interference in the wireless network 100. For example, the macro device of ANF can have a high level of transmission power (for example, 20 Watts) while the peak device of ANF, the femto ANF device, and the relays may have a lower transmission power level (for example, 1 Watt).
[0057] Wireless network 100 can support synchronous or asynchronous operation. For synchronous operation, ANF devices can have similar frame timing, and transmissions from different ANF devices can be approximately time aligned. For asynchronous operation, ANF devices may have different frame timings, and transmissions from different ANF devices may not be aligned in time. The techniques described here can be used for both synchronous and asynchronous operation.
[0058] a controller network 130 can if attach to a set of ANF devices and provide coordination and control for these ANF devices. 0 controller in network 130 may communicate with the devices in ANF 110 across a transport channel return. The available ANF 110 assets can also if communicate one how other, for example, direct or
indirectly via wireless or wired transport channel.
[0059] UEF 120 devices (e.g. 120x, 120y, etc.) can be dispersed throughout the wireless network 100, and each UEF device can be stationary or mobile. A UEF device can also
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19/61 be referred to as a mobile station, a terminal, an access terminal, a subscriber unit, a station, a customer room equipment (CPE), a cell phone, a smart phone, a personal digital assistant (PDA) ), a wireless modem, a wireless communication device, a portable device, a laptop computer, a Wireless Local Area Network (WLL) telephone, a tablet, a camera, a gaming device, a netbook , a smart book, an ultrabook, a medical device or medical equipment, a biometric sensor / device, a useful device such as a smart watch, smart clothing, smart glasses, a smart wrist band, smart jewelry (for example, a ring smart phone, smart bracelet, etc.), an entertainment device (for example, a music device, a video device, a satellite radio, etc.). A vehicle component / sensor, a smart sensor / meter, industrially manufactured equipment, a global positioning system device, or any other suitable device that is configured to communicate wirelessly or wired. Some UEF devices can be considered as machine type communication devices (MTC) or evolved MTC devices (eMTC). MTC and eMTC UEF devices include, for example, robots, drones, remote devices, sensors, meters, monitors, location tags, etc., which can communicate with an ANF device, another device (for example, remote device) , or some other entity. A wireless node can provide, for example, connectivity to
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20/61 or to a network (for example, wide area network such as the Internet or cellular network) via a wired or wireless communication link. Some UEF devices can be considered Internet of Things (loT) devices.
[0060] In Figure 1, a solid line with double arrows indicates the desired transmissions between an UEF device and an ANF server device, which is an ANF device designated to serve the UEF device in the downlink and / or uplink. A dashed line with double arrows indicates the interfering transmissions between a UEF device and an ANF device.
[0061] Certain wireless networks (for example, LTE) use orthogonal frequency division multiplexing (OFDM) in the downlink and single carrier frequency division multiplexing (SC-FDM) in the uplink. OFDM and SC-FDM divide the system's bandwidth into multiple orthogonal subcarriers (K), which are also commonly referred to as tones, binaries, etc. Each subcarrier can be modulated with data. In general, the modulation symbols are sent in the frequency domain with OFDM and in the time domain with SC-FDM. The spacing between adjacent subcarriers can be fixed, and the total number of subcarriers (K) can depend on the system's bandwidth. For example, the spacing of the subcarriers can be 15 kHz and the minimum allocation of resources (called a 'resource block') can be 12 subcarriers (or 180 kHz). Consequently, the nominal FFT size can equal 128, 256, 512, 1024 or 2048 for system bandwidth of 1.25, 2.5, 5, 10 or 20 mega-hertz (MHz), respectively. The system bandwidth can also
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21/61 be divided into sub-bands. For example, a subband can cover 1.08 MHz (ie 6 resource blocks), and there can be 1, 2, 4, 8 or 16 subbands for 1.25, 2 system bandwidth , 5, 5, 10 or 20 MHz, respectively.
[0062] Although aspects of the examples described here may be associated with LTE technologies, aspects of the present invention may be applicable to other wireless communications systems, such as NR.
[0063] NR can use OFDM with a CP in the uplink and downlink and include support for semi-duplex operation using TDD. A single component carrier bandwidth of 100 MHz can be supported. NR resource blocks can span 12 subcarriers with a 75 kHz subcarrier bandwidth for a duration of 0.1 ms. Each radio frame can consist of 50 subframes with a length of 10 ms. Consequently, each subframe can be 0.2 ms long. Each subframe can indicate a connection direction (ie DL or UL) for data transmission and the connection direction for each subframe can be switched dynamically. Each subframe can include DL / UL data as well as DL / UL control data. Subframes of UL and DL to NR can be as described in greater detail below with respect to Figures 6 and 7. The beam formation can be supported and the beam direction can be dynamically configured. MIMO transmissions with pre-coding can also be supported. MIMO configurations in the DL can support up to 8 transmission antennas with multi-layered DL transmissions up to 8 streams and up to 2 streams per UEF device. Multiple transmissions
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22/61 layers with up to 2 flows per UEF device can be supported. Multiple cell aggregation can be supported with up to 8 service cells. Alternatively, NR can support a different air interface, other than an OFDM interface. NR networks can include entities such as CUs and / or DUs.
[0064] In some examples, access to the air interface can be programmed, in which a programming entity (for example, a base station) allocates resources for communication between some or all devices and equipment within its service area or cell . In this description, as discussed later, the programming entity may be responsible for programming, assigning, reconfiguring and releasing resources for one or more subordinate entities. That is, for programmed communication, subordinate entities use resources allocated by the programming entity. Base stations are not the only entities that can function as a programming entity. That is, in some examples, a UEF device may function as a programming entity, programming resources for one or more subordinate entities (for example, one or more other UEF devices). In this example, the UEF device is functioning as a programming entity, and / other UEF devices use resources programmed by the UEF device for wireless communication. A UEF device can function as a programming entity in a non-hierarchical network (P2P) and / or mesh network. In an example of a mesh network, UEF devices can optionally communicate directly with each other
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23/61 others in addition to communicating with the programming entity.
[0065] Thus, in a wireless communication network with programmed access to time-frequency resources and having a cellular configuration, a P2P configuration and a mesh configuration, a programming entity and one or more subordinate entities can communicate using scheduled resources.
[0066] As noted above, an RAN can include a CU and DUs. An NR ANF device (for example, gNB, 5G NodeB, NodeB, transmit receive point (TRP), access point (AP)) can correspond to one or multiple ANF devices. NR cells can be configured as access cells (ACells) or data-only cells (DCells). For example, the RAN (for example, a central unit or distributed unit) can configure the cells. DCells can be cells used for carrier aggregation or dual connectivity, but not used for initial access, cell selection / reselection, or handover. In some cases, cells may not transmit synchronization signals - in some cases, DCells may transmit SS. NR ANF devices can transmit downlink signals to UEF devices that indicate the cell type. Based on the cell type indication, the UEF device can communicate with the NR ANF device. For example, the UEF device can determine the NR ANF devices to consider cell selection, access, handover, and / or measurement based on the indicated cell type.
[0067] Figure 2 illustrates an exemplary logical architecture of a distributed radio access network
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24/61 (RAN) 200, which can be implemented in the wireless communication system illustrated in Figure 1. The 5G 206 access node can include an access node controller (ANC) 202. The ANC can be a central unit ( CU) of distributed RAN 200. The return transport channel interface for the next generation core network (NG-CN) 204 may end at the ANC. The return transport channel interface for neighboring next generation access nodes (NG-ANs) may end at the ANC. The ANC may include one or more 208 TRPs (which may also be referred to as ANF devices, NR ANF devices, NodeBs, 5G NBs, APs, or some other term). As described above, TRP can be used interchangeably with a cell.
[0068] TRPs 208 can be a DU. TRPs can be connected to an ANC (ANC 202) or more than one ANC (not shown). For example, for RAN sharing, radio as a service (RaaS), and specific service developments, TRP can be connected to more than one ANC. The TRP can include one or more antenna ports. TRPs can be configured to individually (for example, dynamic selection) or together (for example, joint transmission) to serve traffic to a UEF device.
[0069] Local architecture 200 can be used to illustrate the definition of transport channel
advance. THE architecture can to be set to support solutions access through in many different types in development. Per example, The architecture can to be
based on transmission network capabilities (for example,
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25/61 bandwidth, latency and / or instability).
[0070] The architecture can share characteristics and / or components with LTE. According to aspects, the next generation AN (NG-AN) 210 can support dual connectivity with NR the NG-AN can share a common terminal for LTE and NR.
[0071] The architecture can allow cooperation between TRPs 208c, cooperation can be present within a TRP and / or through TRPs through ANC 202. According to aspects, no interface between TRPs may be necessary / present.
[0072] According to aspects, a dynamic configuration of divided logic functions may be present in an architecture 200. As will be described in more detail with reference to Figure 5, the Radio Resource Control (RRC) layer, the Packet Data Convergence Protocol (PDCP), Radio Link Control layer (RLC), Media Access Control layer (MAC), and Physical layers (PHY) can be adaptively placed in DU or CU (for example , TRP or ANC, respectively). According to certain aspects, an ANF device can include a central unit (CU) (for example, ANC 202) and / or one or more distributed units (for example, one or more TRPs 208).
[0073] Figure 3 illustrates an exemplary physical architecture of a distributed RAN 300, in accordance with aspects of the present invention. A centralized central network unit (C-CU) 302 can host core network functions. The C-CU can be installed centrally. The functionality of C-CU can be downloaded (for example,
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26/61 for Advanced Wireless Services (AWS)), in an effort to handle peak capacity.
[0074] A centralized RAN unit (C-RU) 304 can host one or more ANC functions. Optionally, the C-RU can host core network functions locally. C-RU may have distributed development. The C-RU may be closer to the edge of the network.
[0075] A DU 306 can host one or more TRPs (edge node (ΕΝ), edge unit (EU), radio head (RH), smart radio head (SRH), or similar). DU can be located at the edges of the network with radio frequency (RF) functionality.
[0076] Figure 4 illustrates illustrative components of the ANF device 110 and UEF device 120 illustrated in Figure 1, which can be used to implement aspects of the present invention. The ANF device can include a TRP. One or more components of the ANF device 110 and UEF device 120 can be used to practice aspects of the present invention. For example, antennas 452, Tx / Rx 454, processors 466, 458, 464, and / or controller / processor 480 of the UEF device 120 and / or antennas 434, processors 420, 430, 438 and / or controller / processor 440 of the ANF device 110 can be used to perform the operations described here and illustrated with reference to Figures 14-15, 19-22.
[0077] Figure 4 shows a block diagram of a design of an ANF device 110 and an UEF device 120, which can be one of the ANF devices and one of the UEF devices in figure 1 for a scenario of
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27/61 restricted association, the base station 110 can be the macro device of ANF 110c in Figure 1, and the UEF device 120 can be the UEF device 120y. Base station 110 can also be a base station of some other type. The base station 110 can be equipped with antennas 434a to 434t, and the UEF device 120 can be equipped with antennas 452a to 452r.
[0078] At base station 110, a transmission processor 420 can receive data from a data source 412 and control information from a controller / processor 440. The control information can be for the Physical Diffusion Channel (PBCH) ), Physical Channel Control Format Indicator (PCFICH), Physical Channel Indicator Hybrid ARQ (PHICH), Physical Downlink Control Channel (PDCCH) etc. Data can be for the Shared Physical Downlink Channel (PDSCH), etc. The processor 420 can process (e.g., encode and map into symbols) the data and control information to obtain data symbols and control symbols, respectively. Processor 420 can also generate reference symbols, for example, for PSS, SSS, and cell-specific reference signal (CRS) transmission (TX), multiple input and multiple output processor (MTMO) 430 can perform spatial processing ( for example, pre-coding) on data symbols, control symbols and / or reference symbols, if applicable, and can provide output symbol streams for modulators (MODs) 432a to 432t. Each 432 modulator can process a respective stream of output symbols (for example, for OFDM, etc.) to obtain a stream of samples
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28/61 outgoing. Each 432 modulator can also process (for example, convert to analog, amplify, filter and upwardly convert) the output sample stream to obtain a downlink signal. Downlink signals from modulators 432a to 432t can be transmitted through antennas 434a to 434t, respectively.
[0079] In the UEF device 120, antennas 452a to 452r can receive downlink signals from base station 110 and can provide received signals to demodulators (DEMODs) 454a to 454r, respectively. Each demodulator 454 can condition (for example, filter, amplify, downwardly convert and digitize) a respective received signal to obtain input samples. Each demodulator 454 can further process the input samples (for example, for OFDM, etc.) to obtain received symbols. A MIMO 456 detector can obtain symbols received from all demodulators 454a through 454r, perform MIMO detection on received symbols if applicable, and provide detected symbols. A 458 receiving processor can process (e.g., demodulate, reverse interleave and decode) the detected symbols, deliver the decoded data to the device
of UEF 120 for a deposit in data 460, and to provide information controldecodedto a controller / proces 480. [0080] In the uplink, at the device in UEF 120, a processor streaming 464 can receive and process
data (for example, for the Uplink Shared Physical Channel (PUCH)) from a 462 data source and control information (for example, for the Physical Channel
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29/61 Uplink Control (PUCCH)) from controller / processor 480. The 464 transmission processor can also generate reference symbols for a reference signal. The transmission processor symbols 464 can be precoded by a TX 466 MIMO processor, if applicable, further processed by demodulators 454a through 454r (e.g., for SC-FDM, etc.) and transmitted to base station 110. In the ANF 110 device, the uplink signals from the UEF 120 device can be received by antennas 434, processed by modulators 432, detected by a MIMO detector 436, if applicable, and further processed by a receiving processor 438 to obtain decoded data and control information sent by the UEF device 120. The receiving processor 438 can provide the decoded data to a data store 439 and the decoded control information to the controller / processor 440.
[0081] The controllers / processors 440 and 480 can direct the operation in the device of ANF 110 and device of UEF 120, respectively. The processor 440 and / or other processors and modules in the base station 110 can execute or direct, for example, the execution of the functional blocks illustrated in Figure 9 and / or other processes for the techniques described herein. The processor 480 and / or other processors and modules in the UEF 120 device can also perform or direct, for example, perform the corresponding / complementary processes for the techniques described here and as illustrated in Figure
10. Memories 442 and 442 482 can store data and
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30/61 program codes for the ANF device 110 and the UEF device 120, respectively. A 444 programmer can program UEF devices for downlink and / or uplink data transmission.
[0082] Figure 5 illustrates a diagram 500 showing examples for implementing a stack of communications protocols, in accordance with aspects of the present invention. The illustrated communications protocol stacks can be implemented by devices that operate on a 5G system. Diagram 500 illustrates a communications protocol stack including a Radio Resource Control (RRC) layer 510, a Packet Data Convergence (PDCP) protocol layer 515, a Radio Link Control (RLC) layer 520 , a Medium Access Control (MAC) layer 525, and a Physical (PHY) layer 530. In several examples, layers of a protocol stack can be implemented as separate software modules, parts of a processor or ASIC, parts of unplaced devices connected by a communications link, or various combinations thereof. Combined and non-combined implementations can be used, for example, in a protocol stack for a network access device (for example, ANs, CUs, and / or DUs) or a UEF device.
[0083] A first option 505-a shows a split implementation of a protocol stack, in which the implementation of the protocol stack is split between a centralized network access device (for example, an ANC 202 in Figure 2) and device distributed network access (for example, DU 208 in the figure). In the first option 505-a, an RRC 510 layer and a PDCP 515 layer can
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31/61 can be implemented by the central unit, and an RLC 520 layer, a MAC 525 layer and a PHY 530 layer can be implemented by the DU. In several examples, CU and DU can be combined or not combined. The first option 505-a may be useful in a cell development of macro cells, micro cells or pico cells.
[0084] A second option 505-b shows a unified implementation of a protocol stack, in which the protocol stack is implemented on a single network access device (eg access node (AN), base station again) radio (NR ANF device), a new radio NodeB (NR NB), a network node (NN), or similar.). In the second option, the RRC 510 layer, the PDCP 515 layer, the RLC 520 layer, the MAC 525 layer, and the PHY 530 layer can be individually implemented by the AN. The second option 505-b may be useful in developing femto cells.
[0085] Independent if one device in network access implements part / or all a pile in protocols, one device in UEF can i .mplement an stack of protoco them whole (per example, the RRC 510 layer, the PDCP 515 layer, the RLC 520, the MAC 525 layer and the PHY 530 layer).[0086] The figure 6 is a diagram 600 showing
an example of a central DL subframe. The central DL subframe may include a control portion 602. The control portion 602 may exist at the beginning or beginning of the central DL subframe. Control portion 602 may include various programming information and / or control information corresponding to various parts of the
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32/61 central subframe DL. In some configurations, the control part 602 can be a physical control channel DL (PDCCH), as shown in Figure 6. The central subframe of DL can also include a data portion DL 604. The data portion of DL 604 can sometimes referred to as the payload of the central DL subframe. The DL 604 data portion may include the communication resources used to communicate DL data from the programming entity (for example, UEF device or ANF device) to the subordinate entity (for example, UEF device). In some configurations, the DL 604 data portion may be a DL shared physical channel (PDSCH).
[0087] The central DL subframe can also include a common UL 606 part. The common UL 606 part can sometimes be referred to as a UL burst, common UL burst, and / or several other suitable terms. The common UL part 606 may include feedback information corresponding to several other parts of the central DL subframe. For example, common UL part 60 6 may include feedback information corresponding to control part 602. Non-limiting examples of feedback information may include an ACK signal, a NACK signal, an HARQ indicator, and / or several other suitable types of information. The common UL part 60 6 may include additional or alternative information, such as information regarding random access channel (RACH) procedures, programming requests (SRs) and various other suitable types of information. As shown in Figure 16, the end of the DL 604 data portion can be separated in time from the beginning of the
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33/61 part of common UL 606. This time separation can sometimes be referred to as a gap, a protection period, a guard interval and / or several other suitable terms. This separation provides time for switching from DL communication (eg, receiving operation by the subordinate entity (eg, UEF device)) to UL communication (eg, transmission by the subordinate entity (eg, UEF device) ). Those skilled in the art will understand that the foregoing is merely an example of a central DL subframe and alternative structures having similar characteristics can exist without necessarily deviating from the aspects described here.
[0088] Figure 7 is a diagram 700 showing an example of a UL-centered subframe. The central UL subframe may include a control portion 702. The control portion 702 may exist at the beginning or beginning of the central UL subframe. The control portion 702 in Figure 7 can be similar to the control portion described above with reference to Figure 6. The central UL subframe can also include a UL 704 data portion. The UL 704 data portion can sometimes be referred to as the payload of the central UL subframe. The UL part can refer to the communication resources used to communicate UL data from the subordinate entity (for example, UEF device) to the programming entity (for example, UEF device or ANF device). In some configurations, the control portion 702 can be a physical DL control channel (PDCCH).
[0089] As illustrated in Figure 7, the
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34/61 end of control portion 702 can be separated in time from the beginning of the UL 704 data portion. This time separation can sometimes be referred to as a gap, a protection period, a protection interval and / or several other suitable terms. This separation provides time for switching from DL communication (for example, receiving operation by the programming entity) to UL communication (for example, transmission by the programming entity). The central UL subframe may also include a common UL part 706. The common UL part 706 in Figure 7 may be similar to the common UL part 606 described above with reference to Figure 6. The common UL part 706 may include information additional or alternative pertaining to the channel quality indicator (CQI), sound reference signals (SRSs), and various other suitable types of information.
Those skilled in the art will understand that the foregoing is merely an example of a central UL subframe and alternative structures having similar characteristics can exist without necessarily deviating from the aspects described here.
[0090] In some circumstances, two or more subordinate entities (for example, UEF devices) can communicate with each other using side link signals. Real-world applications of such side-link communications may include public security, proximity services, EU-to-network communication, vehicle-to-vehicle (V2V) communications, Internet of Everything (IoE) communications, loT communications, mission-critical mesh , and / or various other suitable applications. Generally, a
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35/61 side link signal can refer to a communicated signal, from a subordinate entity, to another subordinate entity without relaying that communication through the programming entity, even if the programming entity can be used for programming purposes and / or control. In some examples, side link signals can be communicated using a licensed spectrum (different from wireless local area networks, which typically use an unlicensed spectrum).
[0091] A UEF device can operate in various configurations of radio resources, including a configuration associated with the transmission of pilots using a dedicated set of resources (for example, a dedicated radio resource control state (RRC), etc.). ) or a configuration associated with the transmission of pilots using a common set of resources (for example, a common RRC state, etc.). When operating in the dedicated RRC state, the UEF device can select a dedicated set of resources to transmit a pilot signal to a network. Operating in the common state of RRC, the UEF device can select a common set of resources to transmit a pilot signal to the network. In any case, a pilot signal transmitted by the UEF device can be received by one or more network access devices, such as an AN, or a DU, or parts thereof. Each receiving network access device can be configured to receive and measure pilot signals transmitted in the common set of resources, and also receive and measure pilot signals transmitted in dedicated sets of resources allocated to the UEF devices for which the
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36/61 network access device is a member of a monitoring set of network access devices for the UEF device. One or more of the receiving network access devices, or a CU to which the receiving network access device (s) transmit the measurements of the pilot signals, can use the measurements to identify service cells for the UEF devices, or to initiate a change from a server cell to one or more of the UEF devices.
MILIMETRIC WAVE SYSTEMS (mmWave) [0092] As used here, the term mmWave generally refers to spectrum bands at very high frequencies, such as 28 GHz. Such frequencies can provide very large bandwidths capable of providing data rates of multiple Gbps, as well as the opportunity for extremely dense spatial reuse to increase capacity. Traditionally, these higher frequencies were not strong enough for the internal / internal environment of broadband, mobile, external applications due to the high loss of propagation and susceptibility to blocking (for example, buildings, humans and the like).
[0093] Despite these challenges, at the higher frequencies at which mmWave operates, the short wavelengths allow the use of a large number of antenna elements in a relatively small form factor. This mmWave feature can be leveraged to form narrow directional beams that can send and receive more energy, which can help to overcome the propagation / loss of path challenges.
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37/61 [0094] These narrow directional beams can also be used for spatial reuse. This is one of the key concessions for using mmWave for mobile broadband services. In addition, paths without line of sight (LOS) (for example, reflections from nearby buildings) can have very large energies, providing alternative paths when line of sight (LOS) paths are blocked. Aspects of the present invention can take advantage of such directional beams, for example, using the beams for RACH communication.
[0095] Figure 8 illustrates an example of active beams 800, in accordance with aspects of the present invention. ANF device and UEF device can communicate using a set of active beams. Active beams can refer to the ANF devices and beam pairs of UEF devices that are used to transmit data and control channels. A data beam can be used to transmit data and a control beam can be used to transmit control information. As shown in Figure 8, the BS-A1 data beam can be used to transmit DL data and the BS-A2 control beam can be used to transmit DL control information.
[0096] An ANF device can monitor beams using beam and feedback measurements from an UEF device. For example, a BS can monitor active beams using DL reference signals. An ANF device can transmit a DL RS, such as a measurement reference signal (MRS) channel status information reference signal (CSI-RS), or a
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38/61 synch signal. A UEF device can report, to the ANF device, a reference signal receiving power (RSRP) associated with a received reference signal. In this way, the ANF device can monitor active beams.
RANDOM ACCESS CHANNEL PROCEDURE (RACH) EXAMPLE [0097] A random access channel (RACH) is a channel that can be shared by multiple UEF devices and can be used by UEF devices to access the network for communications. For example, RACH can be used to establish a call and to access the network for data transmissions. In some cases, RACH can be used for initial access to a network when the UEF device switches from a connected radio resource control (RRC) idle mode to active mode, or when transferring in connected RRC mode. In addition, RACH can be used for the arrival of downlink (DL) and / or uplink (UL) data when the UEF device is in RRC idle mode or RRC idle mode, and when establishing a connection to the network . Certain aspects of the present invention provide multiple RACH procedures and techniques for selecting a RACH procedure for communication.
[0098] Figure 9 is a timing diagram 900 that illustrates an exemplary four-step RACH procedure, in accordance with certain aspects of the present invention. A first message (MSG1) can be sent from the UEF device 120 to the ANF device 110a and the ANF device 110b on the
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39/61 physical random access channel (PRACH). In this case, MSG1 can only include a RACH preamble. At least one of the ANF device 110a or ANF device 110b can respond with a random access response (RAR) message (MSG2) that can include the identifier (ID) of the RACH preamble, a timing advance (TA), an uplink lease, a temporary cellular radio network identifier (C-RNTI) and a backspace indicator. The MSG2 can include a PDCCH communication including control information for a communication to follow on the PDSCH, as illustrated. In response to MSG2, MSG3 is transmitted from the UEF 120 device to the ANF 110a device at the PUC. MSG2 can include an RRC connection request, a tracking area update and a scheduling request. The ANF device 110a then responds with MSG 4 which may include a containment resolution message.
[0099] Figure 10 is a diagram of an exemplary MSG1 uplink communication 1000 for a four-step RACH procedure, in accordance with certain aspects of the present invention. Uplink 1000 communication starts with a common burst of DL, and ends with a common burst of UL, as illustrated. PRACH is included as part of the regulatory UL burst between the common DL and UL bursts and includes a cyclic prefix (CP).
[0100] Figure 11 is a 1100 timing diagram that illustrates an exemplary two-step RACH procedure, in accordance with certain aspects of the present invention. A first enhanced message (eMSGl) can be sent from the UEF 120 device to the
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40/61 ANF device 110a and the ANF device 110b on an improved random access physical channel (ePRACH). In this case, eMSGl may include a RACH preamble for random access and a Demodulation (RS) reference signal for RACH payload demodulation. EMSGl can also include a RACH message containing the UE-ID and / other signaling information (for example, Temporary Storage status report (BSR)) or scheduling request (SR). At least one ANF 110a device or ANF 110b device can respond with a random access response (RAR) message (eMSG2) that can include the RACH preamble ID, a timing advance (TA), an indentation indicator , a containment resolution message, an UL / DL grant, and a transmit power control (TPC) command.
[0101] In certain respects, eMSG 1 retransmission can be manipulated as retries with the transmission power slope and with random timing to avoid collision. Retransmission of eMSG 2 can be implemented with a mapping between the UE-ID in eMSG 1 to a specific RNTI of the UE. The UEF device can monitor a common search space with UE-specific RNI for retransmission of eMSG 2. In some cases, mapping of RA resources (offset, sequence, SF / partition, etc.). In an RNTI it can be implemented, so that the UEF device can monitor the PDCCH to allow the combination of eMSG 2. In some cases, the timeline for eMSG 1 and eMSG 2 of the two-step RACH procedure may be similar to the MSG1 and MSG2 timeline of the four-step RACH procedure.
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41/61 [0102] Figure 12 is a diagram of an exemplary uplink communication 1200 of eMSGl for a two-step RACH procedure, in accordance with certain aspects of the present invention. Uplink 1200 communication begins with a burst of common DL, and ends with a burst of common UL, as illustrated. EPRACH is included as part of the regulator's UL impulse between common DL and UL bursts, as illustrated. In this case, ePRACH includes a RACH preamble and a RACH Message (payload), each including a cyclic prefix (CP).
[0103] In certain aspects of the present invention, the four-step RACH procedure can be used when the UEF device changes from an inactive RRC mode of operation to an active mode connected by RRC of operations. The two-step RACH procedure can be used when the UEF device is in delivery (HO) in RRC connected active mode, or when the UE transitions from RRC connected idle mode to RRC connected active mode. The operating modes of the UEF device are described in more detail with respect to the Figure
13.
[0104] Figure 13 is an illustrative diagram 1300 that illustrates different modes of operation of a UEF device, according to certain aspects of the present invention. As illustrated, a UEF device can be in a connected RRC operation mode or an inactive mode of operation. In the connected RRC operating mode, the UEF device can be in an active (RRC_ACTIVE) or inactive (RRC_INACTIVE) mode. In RRC_INACTIVE mode and in RRC_ACTIVE mode, there may be a
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42/61 context of UEF device in the radio access network (RAN). In RRC_INACTIVE mode, there can be no air interface resources assigned to the UE and the UEF UE device may be able to transmit and receive a small amount of data.
[0105] To transmit nominal data, the UEF device can switch to RRC_ACTIVE mode in which air interface resources can be assigned to the UEF device and the UEF device can be able to transmit and receive any data. Due to inactivity, the UEF device can enter the idle mode of operation, in which there may be a REACHBLE_INACTIVE mode and an energy saving mode. In REACHBLE_INACTIVE mode AND in energy saving mode, there may be no UEF device context in the RAN and no overhead interface feature is assigned to the UE. In REACHBLE_INACTIVE mode, the UEF device may be able to transmit and receive a small amount of data. In some cases, after a range timer has expired, the UE may enter energy saving mode, where the UEF device may be unable to transmit and receive data.
[0106] The operating modes of the UEF device described here can be implemented for a new radio (NR). NR can refer to radios configured to operate according to a wireless standard, such as 5G (for example, wireless network 100). NR can include a wide mobile broadband (eMBB) target of broad bandwidth (eg 80 MHz in addition), millimeter wave (mmW) for high carrier frequency targeting (eg 60 GHz), type communication massive machine (mMTC)
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43/61 aimed at compatible non-retroactive MTC techniques, and a mission critical targeting of very reliable low latency communications (URLLC). An NR cell can refer to a cell that operates according to the NR network. An NR eNB (e.g., ANF 110 device) can correspond to one or multiple transmit reception points (TRPs).
EXAMPLE HACH PROCEDURE IN MILIMETRIC WAVE (MMW) [0107] Certain aspects of the present invention are generally directed to the selection of a RACH procedure and one or more bundles to communicate RACH messages. Different beams can be transmitted in different directions and can be received with different signal qualities. In certain aspects, a UEF device can select the beam with the highest signal quality for communicating RACH messages.
[0108] Figure 14 illustrates exemplary operations 1400 for wireless communication, in accordance with certain aspects of the present invention. In certain respects, operations 1400 may be performed by an ANF device such as the ANF Device 110a.
[0109] Operations 1400 may begin, in block 1402, by transmitting a plurality of reference signals (e.g., synchronization signals) using one or more beams. In certain respects, each of one or more beams can be transmitted in a different direction. In block 1404, the ANF device can receive at least one of a random access channel preamble (RACH) or a RACH payload corresponding to one or
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44/61 more of the reference signals transmitted through at least one of one or more beams.
[0110] Figure 15 illustrates exemplary 1500 operations for wireless communication, in accordance with certain aspects of the present invention. In certain aspects, operations 1500 can be performed by a UEF device such as the UEF device 120.
[0111] Operations 1500 can begin, in block 1502, receiving a plurality of reference signals that are transmitted using one or more beams. In certain respects, each of the one or more beams can be transmitted in a different direction. In block 1504, the UEF device can determine at least one beam from one or more beams to communicate at least one of a RACH preamble or a RACH payload, and in block 1506, transmit at least one of the preamble of RACH RACH or RACH payload based on the determination.
[0112] In certain respects, the reference signals can be at least one of the synchronization signals, reference signals of channel status information or reference signals of mobility. The synchronization signals can be at least one of a primary synchronization signal (PSS), a secondary synchronization signal (SSS), a physical broadcast channel (PBCH) signal reference or demodulation signal (DMRS) of the PBCH signal .
[0113] As described in more detail with respect to Figures 19 and 20, the ANF device can transmit an indication of subcarrier resources to the UEF. In this case, at least one of the preamble to RACH
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45/61 or the RACH payload is transmitted, in block 1506 of Figure 15, by the UEF through the indicated subcarrier resources, and received by the ANF, in block 1404 of Figure 14, through the indicated subcarrier resources.
[0114] Figure 16 illustrates an example of a reference signal (e.g., synchronization signal (SYNC)) and RACH 1600 message communication protocol, in accordance with certain aspects of the present invention. For example, an ANF device (for example, ANF device 110) can transmit one or more SYNC 1602 messages to a UE (for example, UE 120) to synchronize communications. Each SYNC message can include multiple symbols (for example, 13 symbols), and each of the symbols can be transmitted using a different beam (for example, in different directions).
[0115] The UEF device can receive the SYNC message and determine the beam (for example, symbol) with the highest signal quality. As illustrated, the RACH message 1604 transmitted by the UEF device can also include multiple symbols that can correspond to the symbols in the SYNC message. The UEF device can determine which of the beams (for example, symbol) of the SYNC message has the highest quality and utilization of the beam (for example, symbol) having the highest quality for transmitting the RACH preamble (For example, MSG 1 of the procedure four-step RACH). For example, if beam three (for example, symbol three) of the SYNC message has been selected to have the highest quality, beam 3 of the RACH message can be used to transmit the RACH preamble. In some cases, the UE may determine
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46/61 two higher quality beams (or symbols) of the SYNC message. The two highest quality beams can be used by the UEF device to transmit the RACH Preamble and the RACH payload.
[0116] Figure 17 is a diagram 1700 illustrating exemplary SYNC messages 1602 and the RACH message 1604 for the two-step RACH procedure, in accordance with certain aspects of the present invention. For the two-step RACH procedure, two symbols can be used to communicate the RACH preamble and the RACH payload (for example, eMSGl). Thus, the symbols of the SYNC message can be grouped into groups of two symbols, each group transmitted using a different beam.
[0117] The UEF device can determine the symbol group that has the highest quality, and transmit the RACH preamble and the RACH payload using the beam corresponding to the selected symbol group. For example, the UEF device can determine whether symbols three and four have the highest quality, and can send the RACH preamble at symbol three, and the RACH payload at symbol four, using the beam corresponding to symbols three and four of the SYNC message. In this case, the total time resource reserve increases as both symbols three and four are being used, compared to a case where different subcarrier resources are used to transmit the RACH preamble and the RACH payload. In some cases, the RACH preamble can act as the reference signal (RS) for the RACH payload and the RACH payload can be
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47/61
shuffled by identifier preamble to RACH (ID in preamble) such that the device in ANF can determine if the payload of RACH arrived at the same HUH that the preamble in RACH. [0118] THE Figure 18 is one diagram 1800 what
illustrates an example of SYNC and RACH message communication for the two-step RACH procedure, in accordance with certain aspects of the present invention. In this case, the RACH preamble and the RACH payload can be transmitted using the same symbol, but different frequency resources (for example, subcarrier resources). For example, if the UEF device determines that the beam corresponding to symbol three of the SYNC message has the highest quality, the UEF device can transmit both the RACH preamble and the RACH payload using three symbols (for example, and the beam corresponding to the symbol 3), but using different frequency resources.
: 0119] In this case, O overhead in resource in frequency total can increase. At the however, the resources in frequency can to be less scarce s than the resources in
time in multi-beam RACH subframes. In addition, the UEF device may not be programmed for PUC due to the short duration of the symbol. In certain respects, separate reference signals (RSs) can be used for the RACH preamble and the RACH payload. In addition, only UEF devices with good link gain may be able to transmit the two-stage RACH as the UEF device may have to divide the transmission power between the RACH preamble and the load
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48/61 useful of RACH. In some cases, the RACH payload can be shuffled by the RACH preamble ID, such that the ANF device can determine whether the RACH payload is from the same UEF device as the RACH preamble.
[0120] Certain aspects of the present invention are generally directed to techniques for communicating RACH messages using different frequency resources. For example, the ANF device may indicate, for the UEF device, one or more subcarrier resources to be used for transmission of the RACH preamble and / or RACH payload, as described in greater detail with respect to Figures 19 and 20.
[0121] Figure 19 illustrates exemplary 1900 operations for wireless communication, in accordance with certain aspects of the present invention. In certain aspects, 1900 operations can be performed by a UEF device.
[0122] Operation 1900 may begin, in block 1902, by transmitting an indication of subcarrier resources to a UEF device. In block 1904, the ANF device receives at least one of the RACH preamble or a RACH payload based on the indicated subcarrier resources.
[0123] Figure 20 illustrates exemplary operations 2000 for wireless communication, in accordance with certain aspects of the present invention. In certain aspects, operations 2000 can be performed by a UEF device.
[0124] Operation 2000 can start, in the block
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49/61
2002, receiving an indication of subcarrier resources. In block 2004, the UEF device transmits at least one of a RACH preamble or a RACH payload based on the indicated subcarrier resources.
[0125] In certain respects, the total resources for the preamble to RACH and the payload of RACH can be fixed. In other words, an increase in resources for the RACH preamble can be offset by an increase in resources for the RACH payload, such that the total resources assigned to the RACH preamble and the RACH payload do not change. In some cases, the indication of the subcarrier resources includes an indication (for example, a relationship) of the division between the RACH preamble and the RACH payload.
[0126] In certain respects, the indication of the subcarrier resources can be communicated with T according to the present invention starting from at least one master information block (MIB), system information block (SIB), or SIB Minima message . The minimum SIB can denote the minimum SIB information for carrying a RACH configuration. In some cases, the MIB, SIB, or minimum SIB messages can be communicated through at least one broadcast channel (for example, physical broadcast channel (PBCH) or extended PBCH). In certain respects, a beam can be selected based on a SYNC message as described here, and the RACH preamble and / or RACH payload can be communicated using the subcarrier features and through the selected beam.
[0127] Figure 21 illustrates exemplary 2100 operations for wireless communication, according to
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50/61 certain aspects of the present invention. In certain respects, 2100 operations can be performed by a UEF device.
[0128] Operations 2100 can begin, in block 2102, when receiving a plurality of reference signals (for example, SYNC signals) using one or more beams. In block 2104, the UEF device can determine a number of steps for a random access channel (RACH) procedure based on a signal quality corresponding to the reference signals, and in block 2106, transmit a RACH signal (for example, the RACH preamble and / or RACH payload described here) based on the given number of steps.
[0129] The UEF device may be able to support both the four-step and two-step RACH procedures described with respect to Figures 9 and 11 and can determine which RACH procedure to use based on the number of beams (or symbols) that are considered to be of acceptable quality. For example, a beam quality parameter can be compared to a limit and considered to have an acceptable quality value if the quality parameter is above the limit (or below the limit, depending on the quality parameter being used). For example, if two symbols are determined by the UE to have signal quality above the limit, the UEF device can determine to use the two-step RACH procedure AND send the RACH Preamble on the first symbol and the RACH payload on the second symbol. Otherwise, if the UEF device determines whether only a single symbol has a signal quality that
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51/61 is over the limit, the UEF device can determine to use the four-step RACH procedure and to send the RACH preamble to the given symbol. In some cases, if the UEF device determines whether only a single symbol has a signal quality that is above the limit, the UEF device can determine to use the two-step RACH procedure and use different frequency resources for the preamble to RACH and the load
useful from RACH. operations [0130] THE Figure 22 illustrates copies 2200 for wireless communication, a deal with certain aspects gives present invention. In determined
aspects, 2200 operations can be performed by an ANF device.
[0131] Operations 2200 may begin, in block 2202, to detect a random access channel preamble (RACH) that corresponds to one of a plurality of reference signals, in which the plurality of reference signals is transmitted via a or more bundles. In block 2204, the UEF device can determine a configuration for monitoring at least one of the beams corresponding to the detection of the RACH preamble, and in block 2206, monitoring at least one of the beams based on the determination. For example, determining the configuration may include determining a duration to monitor the beam in which the RACH signal was detected, as described in more detail with reference to Figure 23.
[0132] Figure 23 is a 2300 diagram illustrating an exemplary reference signal (synchronization (SYNC)) and message communication
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52/61
RACH for the two-step RACH procedure, in accordance with certain aspects of the present invention. The ANF device monitors the RACH preamble in one direction (for example, beam) and if the preamble is detected, the ANF device continues to monitor that direction (or beam) to receive the RACH payload. Otherwise, the ANF device can move to the next beam / direction. For example, the ANF device can be configured to monitor beams 0-6 in symbols 0-6.
[0133] In the 7 + s symbol (for example, symbol 10 where s = symbol 3), the ANF device can monitor the 7 + s beam if the RACH preamble is not detected in the s symbol, if the RACH preamble is detected in the symbol s, the ANF device can monitor the beam s (same direction) as symbol s in the symbol 7 + s to decode the RACH payload. In some cases, the RACH preamble and the RACH payload of different bundles may partially overlap. In certain respects, the time for device A F that can be / otherwise spent monitoring all the different possible beam directions can be reduced and BS can monitor both UEF devices for providing good / bad link.
[0134] In certain respects, separate RACH subframes can be used for MSG1 (for example, RACH preamble only) and eMSGl (for example, RACH preamble and RACH payload). Each of the RACH subframes can be optimized for the specific transmission. In particular, the eMSGl subframe could have a longer duration and a different periodicity than the subframe that can be used for MSG1 with a RACH preamble. This can
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53/61 involve extra reserve of two types of reserved RACH subframes.
[0135] Alternatively, eMSGl can be sent in two parts, in two separate bundles. The first part can be similar to MSG3, while the second part can be similar to MSG3. In addition, the first part can carry information about the second part (for example, its frequency assignment). In certain aspects, the second part could include an RS transmission and data. In this case, the UEF device can use two detected beams (for example, from the SYNC message). However, if only a strong beam is detected, the UEF device could switch to the four-step RACH procedure. The RS can be included in both parts used for the RACH preamble and the RACH payload and can be linked by a one-to-one mapping to allow the ANF device to identify and match the two parts.
[0136] Although the examples provided here have described the use of SYNC signals to facilitate RACH communication, any reference signal can be used, such as channel status information reference signals or mobility reference signals. In some cases, the SYNC signals can be at least one of the PSS, SSS, PBCH or DMRS signals of the PBCH signal.
[0137] The methods described here comprise one or more steps or actions to obtain the described method. The steps and / or actions of the method can be interchanged with each other without departing from the scope of the claims. In other words, unless it is
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54/61 specified a specific order of steps or actions, the order and / or use of specific steps and / or actions can be modified without departing from the scope of the claims.
[0138] As used here, a phrase refers to at least one of a list of items refers to any combination of these items, including simple elements. As an example, at least one of: a, b or c is intended to cover a, b, c, ab, ac, bc and abc, as well as any combination with multiples of the same element (for example, aa, aaa, aab, aac, abb, acc, bb, bbb, bbc, cc and ccc or any other order of a, bec).
[0139] As used here, the term determine covers a wide variety of actions. For example, determining may include calculating, computing, processing, deriving, investigating, searching (for example, querying a table, database or other data structure), checking and the like. In addition, determining may include receiving (for example, receiving information), accessing (for example, accessing data in a memory) and the like. In addition, determining may include resolving, selecting, choosing, establishing and the like.
[0140] The previous description is provided to allow those skilled in the art to practice the various aspects described here. Various changes to these aspects will be readily apparent to those skilled in the art, and the generic principles defined herein can be applied to other aspects. Thus, it is not intended that the claims be limited to the aspects shown here, and should receive the full scope compatible with the language of the claims, in which reference to a
Petition 870190043686, of 05/09/2019, p. 60/98
55/61 element in the singular is not intended to mean one and only one unless specifically specified, but rather one or more. Unless specifically stated / otherwise, the term does not refer to one or more. All structural and functional equivalents to the elements of the various aspects described throughout this description which are known or subsequently must be known to those skilled in the art are expressly incorporated herein by reference and are intended to be covered by the claims. Furthermore, nothing presented here is intended to be dedicated to the public, regardless of whether such disclosure is explicitly recited in the claims. No claim element shall be constructed under the provisions of 35 USC § 112, sixth paragraph, unless the element is expressly cited using the phrase: means for or, in the case of a method claim, the element is cited using the phrase step to.
[0141] The various method operations described above can be performed by any suitable means capable of carrying out the corresponding functions. The medium may include various hardware and / or software (s) and / or module (s) components including, but not limited to, a circuit, an application specific integrated circuit (ASIC), or processor. Generally, where there are operations illustrated in figures, these operations may have corresponding components of means-plus-function with similar numbering.
[0142] The various illustrative logic blocks, modules and circuits described in relation to this
Petition 870190043686, of 05/09/2019, p. 61/98
56/61 description can be implemented or executed with a general purpose processor, digital signal processor (DSP), application specific integrated circuit (ASIC), field programmable port arrangement (FPGA) or other programmable logic device (PLD), discrete port or transistor logic, discrete hardware components, or any combination of them designed to perform the functions described here. A general purpose processor can be a microprocessor, but in the alternative, the processor can be any commercially available processor, controller, microcontroller or state machine. A processor can also be implemented as a combination of computing devices, for example, a combination of a DSP and a microprocessor, a plurality of microprocessors, one or more
microprocessors together with one DSP core, or any other such configuration. [0143] If implemented in hardware, an configuration of exemplary hardware can understand one
processing system on a wireless node. The processing system can be implemented with a bus architecture. The bus can include any number of interconnection buses and bridges, depending on the specific application of the processing system and the overall design constraints. The bus can be connected to several circuits, including a processor, a machine-readable medium, and a bus interface. The bus interface can be used to connect a network adapter, among other things, to the processing system via the bus. 0 network adapter
Petition 870190043686, of 05/09/2019, p. 62/98
57/61 can be used to implement the PHY layer signal processing functions. In the case of a 120 user terminal (see Figure), a user interface (for example, keyboard, display, mouse, joystick, etc.) can also be connected to the bus. The bus can also connect several other circuits, such as timing sources, peripherals, voltage regulators, power management circuits, and the like, which are well known in the art and therefore will not be described below. The processor can be implemented with one or more general purpose and / or special purpose processors. Examples include microprocessors, microcontrollers, DSP processors and / or other circuits that can run software. Those skilled in the art will recognize how to implement the functionality described for the processing system, depending on the specific application and the general design restrictions imposed on the global system.
[0144] If implemented in software, functions can be stored or transmitted using one or more instructions or code in a computer-readable medium. The Software must be interpreted broadly to mean instructions, data, or any combination thereof, whether referred to as software, firmware, middleware, microcode, hardware description language, or otherwise. Computer-readable media include computer storage media and communication media including any medium that facilitates the transfer of a computer program from one place to another. The processor may be responsible for managing the bus and overall processing, including running
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58/61 software modules stored in machine-readable storage medium. A computer-readable storage medium can be coupled to a processor such that the processor can read information from, and write information to, the storage medium. Alternatively, the storage medium can be integrated with the processor. For example, machine-readable media may include a transmission line, a data-modulated carrier wave, and / or a computer-readable storage medium with instructions stored therein separate from the wireless node, all of which can be accessed by the processor through the bus interface. Alternatively or in addition, the machine-readable media, or any portion thereof, can be integrated into the processor, as is the case for temporary storage and / or general register files. Examples of machine-readable storage media may include, by way of example, RAM (random access memory), flash memory, ROM (Read memory), PROM (Programmable Read memory), EPROM (Programmable Read memory Erasable), EEPROM (Electrically Erasable Programmable Read memory), recorders, magnetic disks, optical disks, hard disks, or any other suitable storage medium, or any combination thereof. Machine-readable media can be incorporated into a computer program product.
[0145] A software module can comprise a single instruction, or many instructions, and can be distributed across several different code segments, between different programs, and through
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59/61 multiple storage media. The computer-readable media can comprise a number of software modules. The software modules include instructions that, when executed by a device such as a processor, cause the processing system to perform various functions. Software modules can include a transmit module and a receive module. Each software module can reside on a single storage device or be distributed across multiple storage devices. For example, a software module can be loaded into RAM from a hard disk when a trigger event occurs. During the execution of the software module, the processor can load some of the cached instructions to increase the access speed. One or more lines of cache can then be loaded into a general log file for execution by the processor. When referring to the functionality of a software module below, it will be understood that such functionality is implemented by the processor when executing instructions from that software module.
[0146] Furthermore, any connection is appropriately called a computer-readable medium. For example, if the software is transmitted from a website, server, or other remote source using a coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL) or wireless technologies such as infrared (IR) , radio and microwave, then coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, radio and microwave are included in the media definition. Disk and disk,
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60/61 as used here, includes compact disc (CD) laser disc, optical disc, digital versatile disc (DVD) floppy disc, and Blu-ray ® disc where discs usually reproduce data magnetically, while discs reproduce data optically with lasers. Thus, in some respects computer readable media may comprise non-transitional computer readable media (for example, tangible media). In addition, for other aspects, the computer-readable media may comprise transient computer-readable media (e.g., a signal). Combinations of the above should also be included in the scope of computer-readable media.
[0147] Thus, certain aspects may comprise a computer program product for carrying out the operations presented here. For example, such a computer program product may comprise a computer-readable medium having instructions stored (and / or encoded) therein, the instructions being executable by one or more processors to perform the operations described herein.
[0148] In addition, it should be considered that the modules and / or other appropriate means for carrying out the methods and techniques described herein can be downloaded and / or otherwise obtained by a user terminal and / or base station as applicable . For example, such a device can be coupled to a server to facilitate the transfer of means for carrying out the methods described herein. Alternatively, several methods described herein can be provided by means of storage (for example, RAM, ROM, a physical storage medium such as
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61/61 a compact disk (CD) or floppy disk, etc.), such that a user terminal and / or base station can obtain the various methods by coupling or supplying the storage medium to the device. In addition, any other suitable technique for providing the methods and techniques described herein to a device can be used.
[0149] It should be understood that the claims are not limited to the precise configuration and components illustrated above. Various modifications, changes and variations can be made in the arrangement, operation and details of the methods and apparatus described above without departing from the scope of the claims.

权利要求:
Claims (5)
[1]
1/5

1. Method for wireless communications, comprising:
to transmit a plurality of signs of
reference using one or more beams; and receiving at least one of a random access channel preamble (RACH) and / or a RACH payload corresponding to one or more of the reference signals transmitted through at least one of one or more beams.
[2]
A method according to claim 1, wherein the reference signals comprise at least one of synchronization signals, channel status information reference signals, or mobility reference signals.
3. Method, according to claim 1, in
that each of one or more beams is transmitted in a different direction.
A method according to claim 1, further comprising:
transmit a random access response, in which the RACH payload is received before transmitting the random access response.
5. Method, according to claim 1, in that the payload of RACH comprises an EU identifier
ID).
6. Method, according to claim 1, in that the payload of RACH comprises at least one of a
schedule request, temporary storage status request, or beam tracking request.
7. Method, according to claim 1, in
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2/5 that the RACH payload is shuffled based on an identifier from the RACH preamble.
A method according to claim 1 wherein the RACH preamble and the RACH payload are received using the same beam.
A method according to claim 8 wherein the RACH preamble and the RACH payload are received using different time or frequency resources.
A method according to claim 1, further comprising:
transmit an indication of subcarrier resources, in which at least one of the RACH preamble or RACH payload is received through the indicated subcarrier resources.
11. Method for wireless communications, comprising:
receiving a plurality of reference signals that are transmitted using one or more beams;
determining at least one beam from one or more beams to communicate at least one of a random access channel (RACH) preamble or a RACH payload; and transmit at least one of the RACH preamble or the RACH payload based on the determination.
12. The method of claim 11, further comprising:
receive a random access response, in which the RACH payload is transmitted before receiving the random access response.
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[3]
3/5
13. The method of claim 11 wherein the RACH payload is shuffled based on an identifier from the RACH preamble.
14. The method of claim 11, wherein the RACH payload comprises an UE identifier.
A method according to claim 11, wherein determining at least one beam is based on a quality of at least one of the received reference signals using at least one of the one or more beams.
16. The method of claim 11 wherein the RACH preamble and the RACH payload are transmitted using the same beam.
17. The method of claim 16 wherein the RACH preamble and the RACH payload are transmitted over different time or frequency resources.
18. The method of claim 11, further comprising:
determine a number of steps for a RACH procedure based on a signal quality corresponding to at least one of the beams, in which the RACH preamble and the RACH payload are transmitted based on the determined number of steps.
19. The method of claim 18, wherein:
the RACH procedure comprises a two-step RACH procedure, if the signal quality of at least two of the beams is determined to be acceptable by comparing the signal quality with a threshold; and the preamble of RACH is transmitted through a first beam of at least two beams, and the payload of
Petition 870190043686, of 05/09/2019, p. 70/98
[4]
4/5
RACH is transmitted via a second beam of at least two beams.
20. Method according to claim 18, wherein:
the RACH procedure comprises a two-step RACH procedure if the signal quality of one of the beams is determined to be acceptable by comparing the signal quality with a limit; and the RACH preamble and the RACH payload are transmitted through the beam which has acceptable signal quality and using different frequency resources.
21. The method of claim 18, wherein:
the RACH procedure comprises a four-step RACH procedure if the signal quality of one of the beams is determined to be acceptable by comparing the signal quality with a threshold.
22. The method of claim 11, further comprising:
to receive an recommendation in resources in sub-carrier, in that at one less among the preamble in RACH or the load useful from RACH is transmitted based we
subcarrier resources indicated.
23. The method of claim 22, wherein the total resources for receiving the RACH preamble and the RACH payload are fixed.
24. The method of claim 23, wherein the indication comprises an indication of a resource split between the RACH preamble and the RACH payload.
25. Method according to claim 22, in
Petition 870190043686, of 05/09/2019, p. 71/98
[5]
5/5 that the indication received as part of at least one of a master information block (MIB), system information block (SIB), or minimum SIB message.
26. The method of claim 25, wherein the minimum SIB comprises minimum SIB information for transporting a RACH configuration.
27. Method for wireless communications, comprising:
detecting a random access channel (RACH) preamble that corresponds to one of a plurality of reference signals, wherein the plurality of reference signals is transmitted through one or more beams;
determining a configuration to monitor at least one of the beams corresponding to the detection of the RACH preamble; and monitor at least one of the beams based on the determination.
28. The method of claim 27, wherein determining the configuration comprises determining a duration to monitor at least one of the beams in which the RACH preamble has been detected.
29. The method of claim 28, wherein the at least one of the beams is monitored for the duration to receive a RACH payload.
30. The method of claim 27, wherein the preamble of RACH is detected in a first symbol and through a beam corresponding to the first symbol, and in which the determination comprises determining to monitor a second symbol through at least one of the bundles corresponding to the first symbol.

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法律状态:
2021-10-05| B350| Update of information on the portal [chapter 15.35 patent gazette]|

优先权:

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申请号 | 申请日 | 专利标题

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US201662421841P| true| 2016-11-14|2016-11-14|

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US15/707,520|US11191108B2|2016-11-14|2017-09-18|Two step random-access channelprocedure in millimeter wave |

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PCT/US2017/059904|WO2018089265A1|2016-11-14|2017-11-03|Two step random-access channelprocedure in millimeter wave |

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