designs for set of control resources (coreset) of remaining minimum system information (rmsi) and co

专利摘要:
Certain aspects of the present disclosure provide techniques and devices related to projects for the set of control resources (CORESET) of minimum remaining system information (RMSI) and CORESET for other system information (OSI). In certain respects, a wireless communication device (for example, user equipment) is enabled to determine the CORESET location of the PDCCH Type0 common research space and the OSI CORESET in the frequency and time domains based on the location of the synchronization signal block (SSB) transmissions in the frequency and time domains. Determining the location of the time and frequency resources of the RMSI CORESET and the OSI CORESET allows the UE to receive the RMSI CORESET and the OSI CORESET, respectively.
公开号:BR112020009536A2
申请号:R112020009536-2
申请日:2018-10-27
公开日:2020-11-03
发明作者:Hung Dinh Ly；Heechoon Lee；Tingfang JI
申请人:Qualcomm Incorporated；
IPC主号:

专利说明:

[0001] [0001] This application claims priority for U.S. Order 16 / 170,558, filed on October 25, 2018, which claims priority for and the benefit of US Order No. 62 / 588,245 entitled “DESIGNS FOR REMAINING MINIMUM SYSTEM INFORMATION (RMSI) CONTROL RESOURCE SET (CORESET) AND OTHER SYSTEM INFORMATION (OSI) CORESET”, ”which was filed on November 17, 2017. The aforementioned requests are incorporated by reference in its totalities. Field
[0002] [0002] Aspects of this disclosure generally refer to wireless communication systems and, more particularly, to projects for the set of control resources (CORESET) of remaining minimum system information (RMSI) and CORESET of other system information ( OSI). Foundation
[0003] [0003] Wireless communication systems are widely used to provide various telecommunication services, such as telephony, video, data, messages, broadcasts, etc. Systems can employ multiple access technologies capable of supporting communication with multiple users by sharing available system resources (for example, bandwidth and transmission power). Examples of such multiple access systems include Long Term Evolution systems
[0004] [0004] In some examples, a wireless multiple access communication system may include a variety of base stations (BSs), each of which can simultaneously support communication to various communication devices, also known as user equipment (UEs) ). In an LTE or LTE-A network, a set of one or more base stations can define a Node B (eNB). In other examples (for example, on an NR, next generation or 5G network), a wireless multiple access communication system may include a variety of distributed units (DUs) (for example, edge units (EUs), nodes edge (ENs), radio heads (RHs), smart radio heads (SRHs), receiving and transmitting points (TRPs) etc.) in communication with various 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 B node (NR NB), a network node, NB 5G, a Next Generation B Node (gNB) etc.). The BS or DU can communicate with a set of UEs on downlink channels (for example, for transmissions from a BS or for a UE) and uplink channels (for example, for transmissions from an UE to a BS or DU).
[0005] [0005] These multiple access technologies have been adopted in several telecommunications standards to provide a common protocol that allows different wireless devices to communicate at a municipal, national, regional and even global level. An example of an emerging telecommunication standard is New radio (NR), for example, 5G radio access. NR is a set of enhancements to the mobile LTE standard promulgated by the Third Generation Partnership Project (3GPP). It is designed to better support mobile broadband Internet access, improving spectral efficiency, reducing costs, improving services, making use of the new spectrum and integrating better with other open standards using OFDMA with a cyclic prefix (CP) in downlink (DL) and uplink (UL), in addition to supporting beam formation, multiple input and multiple output antenna technology (MIMO) and carrier aggregation.
[0006] [0006] However, as the 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 telecommunications standards that employ those technologies. BRIEF SUMMARY
[0007] [0007] The systems, methods and devices of dissemination have several aspects, none of which is solely responsible for their desirable attributes. Without limiting the scope of this disclosure, as expressed by the following claims, some features will now be discussed shortly. After considering this discussion, and particularly after reading the section entitled “Detailed Description”, it will be understood how the features of this disclosure provide advantages that include improved communications between access points and stations on a wireless network.
[0008] [0008] Certain aspects of this disclosure generally refer to projects for the set of control resources (CORESET) of remaining minimum system information (RMSI) and CORESET for other system information (OSI).
[0009] [0009] Certain aspects of the present disclosure provide a method for wireless communications by a user equipment (UE). The method includes receiving a Type0 control resource set (CORESET) configuration of Type0 downlink control physical channel (PDCCH) and a physical resource block grid (PRB) offset in a physical broadcasting channel (PBCH) carried by a synchronization signal block (SSB), the CORESET configuration of the PDCCH Type0 common search space comprising an indication of one or more displacement values corresponding to one or more displacements related to frequency locations. CORESET resource blocks (PRBs) of Type0 common PDCCH search space relative to SSB PRB frequency locations. The method also includes aligning an SSB PRB grid with a CORESET PRB grid of common PDCCH Type0 search space by applying the PRB grid offset. The method also includes mapping the indication to one or more offset values using a mapping stored by the UE. The method also includes determining the frequency locations of the CORESET PRBs of the Type0 common PDCCH search space based on one or more offset values and the frequency locations of the SSB PRBs. The method also includes receiving PDCCH Type0 in the common search space CORESET of PDCCH Type0.
[0010] [0010] Certain aspects of the present disclosure provide a method for wireless communications by a user equipment (UE). Certain aspects of the present disclosure provide a method for wireless communications by user equipment (UE). The method includes determining Type 0 control resource set (CORESET) frequency locations of downlink control physical channel (PDCCH) Type0 on a shared downlink physical channel (PDSCH). The method further includes determining CORESET frequency locations of Type0a physical downlink control common search space on the PDSCH based on the PDCCH Type0 common search space CORESET frequency locations. The method also includes receiving the common search space CORESET of PDCCH Type0a.
[0011] [0011] Certain aspects of the present disclosure provide a method for wireless communications by a base station (BS). The method includes transmitting a synchronization signal block (SSB) to user equipment, the SSB comprising a physical broadcasting channel (PBCH) having a common physical channel search space set (CORESET) configuration Type0 downlink control (PDCCH) and a physical resource block grid (PRB) offset, the PDCCH Type0 common search space CORESET configuration comprising an indication of one or more offset values corresponding to one or more offsets related to CORESET resource block frequency locations (PRBs) from Type0 common PDCCH search space relative to SSB PRB frequency locations. The method also includes transmitting a PDCCH Type0 in the common search space CORESET of PDCCH Type0 for reception by the UE.
[0012] [0012] Aspects generally include methods, apparatus, systems, computer-readable media and processing systems, as substantially described in this document with reference to and as illustrated by the accompanying drawings. Several other aspects are provided.
[0013] [0013] For the accomplishment of the above and related purposes, one or more aspects comprise the following resources fully described and particularly indicated in the claims. The following description and the accompanying drawings present in detail certain illustrative features of one or more aspects. These resources are indicative, however, of just a few of the many ways in which the principles of various aspects can be employed, and this description aims to identify all of these aspects and their equivalents. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] [0014] In order for the resources mentioned above in this disclosure to 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 attached drawings. It should be noted, however, that the attached drawings illustrate only certain aspects typical of this disclosure and, therefore, should not be considered limiting its scope, as the description may admit other equally effective aspects.
[0015] [0015] Figure 1 is a block diagram illustrating conceptually an exemplary telecommunications system, according to certain aspects of this disclosure.
[0016] [0016] Figure 2 is a block diagram illustrating an exemplary logical architecture of a distributed radio access network (RAN), according to certain aspects of this disclosure.
[0017] [0017] Figure 3 is a diagram illustrating an exemplary physical architecture of a distributed RAN, according to certain aspects of this disclosure.
[0018] [0018] Figure 4 is a block diagram illustrating, in a conceptual way, a design of an exemplary base station (BS) and user equipment (UE), in accordance with certain aspects of this disclosure.
[0019] [0019] Figure 5 is a diagram showing examples for implementing a communication protocol stack, according to certain aspects of the present disclosure.
[0020] [0020] Figure 6 illustrates an example of a centric downlink subframe, according to certain aspects of the present disclosure.
[0021] [0021] Figure 7 illustrates an example of a centric uplink subframe, according to certain aspects of the present disclosure.
[0022] [0022] Figure 8 illustrates an exemplary structure of a synchronization signal block (SSB) broadcast by a base station, in accordance with aspects of the present disclosure.
[0023] [0023] Figure 9 illustrates exemplary configurations of SSB transmission opportunity patterns based on various system parameters, according to aspects of the present disclosure.
[0024] [0024] Figure 10 illustrates an exemplary configuration of SSB transmission opportunities with reference to frequency and time resources, according to certain aspects of this disclosure.
[0025] [0025] Figure 11 illustrates exemplary wireless communications operations for use by user equipment (UE), in accordance with certain aspects of this disclosure.
[0026] [0026] Figure 11A illustrates a wireless communication device that can include various components configured to perform operations for the techniques disclosed in this document, such as one or more of the operations illustrated in Figure 11.
[0027] [0027] Figures 12A-12-C illustrate physical resource block (PRB) grids each including a number of consecutive SSB PRBs and a number of consecutive control system set (CORESET) PRBs of minimum system information remnants (ISMS), in accordance with certain aspects of this disclosure.
[0028] [0028] Figure 13 illustrates an example table showing the possible number of frequency shift values that a base station (BS) can indicate to a UE in the indication in various scenarios, according to certain aspects of the present disclosure.
[0029] [0029] Figure 14 illustrates an example table showing a possible smaller number of frequency shift values that a base station (BS) can indicate to a UE in the indication in various scenarios, according to certain aspects of the present disclosure.
[0030] [0030] Figure 15 shows three examples of RMSI CORESET being multiplexed by frequency division (FDM) with SSB, according to certain aspects of the present disclosure.
[0031] [0031] Figure 16 illustrates an exemplary table showing different displacement values depending on whether the RMSI subcarrier spacing (SCS) and the SSB SCS are the same or different, according to certain aspects of the present disclosure.
[0032] [0032] Figure 17 illustrates exemplary wireless communications operations for use by user equipment (UE), in accordance with certain aspects of this disclosure.
[0033] [0033] Figure 17A illustrates a wireless communication device that can include various components configured to perform operations for the techniques disclosed in this document, such as one or more of the operations illustrated in Figure 17.
[0034] [0034] Figure 18 illustrates how a collection of
[0035] [0035] Figures 18A-18D illustrate exemplary mappings between RMSI timing locations and SSB timing locations for a frequency band below 6 GHz, in accordance with certain aspects of the present disclosure.
[0036] [0036] Figure 19 illustrates how a collection of Figures 19A-18B can be arranged to show a complete figure including exemplary mappings between the RMSI timing locations and the SSB timing locations for a frequency band above 6 GHz.
[0037] [0037] Figures 19A-19B illustrate exemplary mappings between RMSI timing locations and SSB timing locations for a frequency band above 6 GHz, in accordance with certain aspects of the present disclosure.
[0038] [0038] Figure 20 illustrates exemplary wireless communications operations for use by user equipment (UE), in accordance with certain aspects of this disclosure.
[0039] [0039] Figure 20A illustrates a wireless communication device that can include various components configured to perform operations for the techniques disclosed in this document, such as one or more of the operations illustrated in Figure 20.
[0040] [0040] Figure 21 illustrates exemplary wireless communications operations for use by user equipment (UE), in accordance with certain aspects of this disclosure.
[0041] [0041] Figure 21A illustrates a wireless communication device that can include various components configured to perform operations for the techniques disclosed in this document, such as one or more of the operations illustrated in Figure 21.
[0042] [0042] Figure 22 illustrates exemplary wireless communications operations for use by user equipment (UE), in accordance with certain aspects of this disclosure.
[0043] [0043] Figure 22A illustrates a wireless communication device that can include various components configured to perform operations for the techniques disclosed in this document, such as one or more of the operations illustrated in Figure 22.
[0044] [0044] To facilitate understanding, identical reference numbers were used, whenever possible, to designate identical elements common to the figures. It is contemplated that the elements disclosed in one aspect can be used beneficially in other aspects without specific citation. DETAILED DESCRIPTION
[0045] [0045] Aspects of the present disclosure refer to systems and methods for determining the locations of the set of control resources (CORESET) of remaining minimum system information (RMSI) and CORESET of other system information (OSI) in the time domains and frequency.
[0046] [0046] Aspects of the present disclosure provide apparatus, methods, processing systems and computer-readable media for new radio (NR) (new radio access technology or 5G technology).
[0047] [0047] NR can support several wireless communication services, such as enhanced mobile broadband (eMBB) targeting broadband width (for example, 80 MHz or more), millimeter wave (mmW) targeting high carrier frequency (for example , 27 GHz or more), massive MTC (mMTC) targeting MTC techniques not compatible with previous versions and / or mission critical targeting ultra reliable low latency communications (URLLC). These services may include latency and reliability requirements. These services may also have different transmission time intervals (TTI) to meet the respective quality of service (QoS) requirements. In addition, these services can coexist in the same subframe.
[0048] [0048] In certain respects, cell synchronization procedures may involve a base station (for example, BS 110, as described in Figure 1), broadcasting a set of signals on an SSB to facilitate cell search and synchronization over a UE (e.g. UE 120 as described in relation to Figure 1). An SSB includes a primary sync signal (PSS), a secondary sync signal (SSS) and a physical broadcast channel (PBCH). An SSB transmitted by a base station helps the UE to determine system timing information, such as a PSS-based symbol timing, PSS and SSS-based cell identification, and other parameters required for initial cell access based on system information sent in the PBCH.
[0049] [0049] System information, in some cases, may include minimum system information (MSI), as well as other system information (OSI). In some cases, MSI includes information carried by the PBCH (similar to the master information block (MIB) in LTE), as well as the minimum remaining system information (RMSI). The information carried by the PBCH (similar to MIB) is information that is used by the UE to obtain other information from the cell. ISMS includes information related to UE access to the cell, as well as configuration of radio resources common to all UEs in the cell. RMSI can be interchangeably referred to as system information block 1 (SIB1), RMSI CORESET can be interchangeably referred to as CORESET of downlink control physical channel (PDCCH) Type0 search, OSI CORESET can be interchangeably referred to as CORESET of physical downlink control channel (PDCCH) Type0a common search space. The RMSI, as described above, is carried over a shared physical downlink channel (PDSCH). UEs are programmed to communicate using PDSCH resources based on information sent in the PDCCH. PDSCH can also transport OSI.
[0050] [0050] The PDCCH (for example, PDCCH Type0), which programs the RMSI, can be transmitted in a set of control resources (CORESET) within an RMSI PDCCH monitoring window associated with an SSB. In some cases, the RMSI CORESET (common search space CORESET of PDCH Type0) is a CORESET in which the PDCCH, to program the PDSCH that carries the RMSI, is mapped.
[0051] [0051] Certain modalities described herein refer to the enabling of a wireless communication device, such as a UE (for example, UE 120), to determine the location of the RMSI CORESET and the OSI CORESET in the frequency and time based on the location of SSB transmissions in the frequency and time domains. Determining the location of the CORESET frequency and time resources of RMSI and CORESET of OSI allows the UE to receive the CORESET from RMSI and CORESET from OSI, respectively. Upon receiving the RMSI CORESET, the UE can receive the PDCCH (for example, PDCCH Type0) in the RMSI CORESET, on the basis of which the UE is able to receive and decode the PDSCH that carries the RMSI. In addition, the UE can determine the location of the OSI CORESET in the frequency and time domains, based on the RMSI CORESET location in the frequency and time domains.
[0052] [0052] The following description provides examples and does not limit the scope, applicability or examples presented in the claims. Changes can be made to the function and arrangement of the elements discussed without departing from the scope of the disclosure. 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, the features described in relation to some examples can be combined into some other examples. For example, an apparatus can be implemented or a method can be practiced using any number of aspects presented here. In addition, the scope of the disclosure is intended to cover an apparatus or method that is practiced using another structure, functionality or structure and functionality in addition to or different from the various aspects of the disclosure presented here. It should be understood that any aspect of the disclosure disclosed herein may be incorporated by one or more elements of a claim. The word "example" is used here to mean "serving as an example, instance or illustration". Any aspect described here as "exemplary" should not necessarily be interpreted as preferred or advantageous over other aspects.
[0053] [0053] The techniques described here can be used for various wireless communication networks, 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 variants of CDMA. The cdma2000 covers the IS-2000, IS-95 and IS-856 standards. A TDMA network can implement radio technology, such as the Global Mobile Communications System (GSM). An OFDMA network can implement radio technology, such as NR (for example, RA 5G), evolved UTRA (E-UTRA), Ultra-Mobile 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 Telecommunication System (UMTS). NR is an emerging wireless technology under development in conjunction with the 5G Technology Forum (5GTF). Long Term Evolution (LTE) 3GPP and LTE-Advanced (LTE-A) are versions of UMTS that use E-UTRA. UTRA, E-UTRA,
[0054] [0054] Figure 1 illustrates an exemplary wireless network 100 in which aspects of the present disclosure can be performed. For example, user equipment 120 can receive a set of control resource set (CORESET) of minimum remaining system information (RMSI) on a physical broadcasting channel (PBCH) from base station 120. The CORESET configuration of ISMS can include an indication that UE 120 can use to determine the locations of ISMS CORESET frequency resources. In addition, the UE 120 can store an SSB time resource mapping for RMSI CORESET time resources that allows the UE 120 to determine RMSI CORESET time resource locations.
[0055] [0055] The UE can also determine the CORESET time and frequency locations from other system information (OSI) based on the RMSI CORESET time and frequency locations.
[0056] [0056] As illustrated in Figure 1, wireless network 100 can include a number of BSs 110 and other network entities. A BS can be a station that communicates with UEs. Each BS 110 can provide communication coverage for a particular geographic area. In 3GPP, the term “cell” can refer to a coverage area of a Node B and / or a subsystem of Node B serving this coverage area, depending on the context in which the term is used. In NR systems, the term “cell”, BS, Next Generation Node B (gNB), Node B, NB 5G, access point (AP), BS NR, BS NR, or transmission and reception (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 BS. In some examples, BSs can be interconnected with each other and / or with one or more other BSs or network nodes (not shown) on wireless network 100 through various types of feedback interfaces, such as a direct physical connection, a virtual network, or the like, using any suitable transport network.
[0057] [0057] In general, any number of wireless networks can be implemented in a given geographic area. Each wireless network can support a particular 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, frequency channel, tone, subband, subcarrier etc. Each frequency can support a single RAT in a given geographic area to avoid interference between wireless networks from different RATs. In some cases, RAT NR or 5G networks can be implemented.
[0058] [0058] A BS can provide communication coverage for a macrocell, a pico-cell, a femto-cell and / or other types of cell. A macrocell can cover a relatively large geographical area (for example, several kilometers in radius) and can allow unrestricted access by UEs with a service subscription. A peak cell can cover a relatively small geographical area and can allow unrestricted access by UEs with a service subscription. A femto-cell can cover a relatively small geographical area (for example, a house) and may allow access restricted by UEs having association with the femto-cell (for example, UEs in a Closed Subscriber Group (CSG), UEs for users in the house etc.). A BS for a macrocell can be referred to as a macro-BS. A BS for a pico-cell can be referred to as pico-BS. A BS for a femto-cell can be referred to as a femto-BS or a domestic BS. In the example shown in Figure 1, BSs 110a, 110b and 110c can be macro-BSs for macrocells 102a, 102b and 102c, respectively. The BS 110x can be a pico-BS for a 102x peak cell. BSs 110y and 110z can be femto-BS for femto-cells 102y and 102z, respectively. A BS can support one or more cells (for example, three).
[0059] [0059] 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, a BS or a UE) and sends a transmission of the data and / or other information to a downstream station ( for example, a UE or a BS). A relay station can also be a UE that relays transmissions to other UEs. In the example shown in Figure 1, a relay station 110r can communicate with BS 110a and UE 120r in order to facilitate communication between BS 110a and UE 120r. A relay station can also be referred to as a relay BS, a relay, etc.
[0060] [0060] Wireless network 100 can be a heterogeneous network that includes BSs of different types, for example, macro-BS, pico-BS, femto-BS, retransmissions, etc. These different types of BSs can have different levels of transmission power, different coverage areas and a different impact on wireless network interference 100. For example, macro-BS can have a high level of transmission power (for example, 20 Watts), while pico-BS, femto-BS and retransmissions may have a lower transmit power level (for example, 1 Watt).
[0061] [0061] Wireless network 100 can support synchronous or asynchronous operation. For synchronous operation, BSs can have a similar frame time and transmissions from different BSs can be approximately time aligned. For asynchronous operation, BSs may have a different frame timeout, and transmissions from different BSs may not be time aligned. The techniques described in this document can be used for synchronous and asynchronous operation.
[0062] [0062] A network controller 130 can couple with a set of BSs and provide coordination and control to those BSs. The network controller 130 can communicate with BSs 110 via a backhaul. BSs 110 can also communicate with each other, for example, directly or indirectly, via wireless or wired feedback.
[0063] [0063] UEs 120 (e.g. 120x, 120y etc.) can be dispersed over wireless network 100, and each UE can be stationary or mobile. A UE can also be referred to as a mobile station, a terminal, an access terminal, a subscriber unit, a station, a CPE (Customer Premises Equipment), a cell phone, a smartphone, a personal digital assistant (PDA), a wireless modem, a wireless communication device, a portable device, a laptop computer, a cordless phone, a local wireless circuit station (WLL), a tablet, a camera, a gaming device, a netbook, a smartbook, an ultrabook, a medical device or medical equipment, a biometric sensor / device, a wearable device, such as a smart watch, smart clothes, smart glasses, smart bracelet, smart jewelry (for example, a smart ring, a bracelet smart device, etc.), an entertainment device (for example, a music device, a video device, a satellite radio, etc.), a vehicle component or sensor, a smart meter / sensor, manufacturing equipment industrial action, a global positioning system device or any other suitable device that is configured to communicate over a wireless or wired medium. Some UEs can be considered machine-type (MTC) or evolved communication devices or evolved MTC (eMTC) devices. MTC and eMTC UEs include, for example, robots, drones, remote devices, sensors, meters, monitors, location tags, etc., which can communicate with a BS, another device (for example, remote device) or some other entity. A wireless node can provide, for example, connectivity to or to a network (for example, a wide area network, such as the Internet or a cellular network) via a wireless or wired communication link. Some UEs can be considered Internet of Things (IoT) devices or narrowband IoT (NB-IoT) devices.
[0064] [0064] In Figure 1, a solid line with double arrows indicates the desired transmissions between a UE and a service BS, which is a BS designated to serve the UE on the downlink and / or uplink. A dashed line with double arrows indicates interfering transmissions between a UE and a BS.
[0065] [0065] 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 partition the system's bandwidth into various orthogonal (K) subcarriers, which are also commonly called tones, compartments, etc. Each subcarrier can be modulated with data. In general, 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 be dependent on the system's bandwidth. For example, the spacing of the subcarriers can be 15 kHz and the minimum allocation of resources (called physical resource block (PRB)) can be 12 subcarriers (or 180 kHz). Consequently, the nominal FFT size can be 128, 256, 512, 1024 or 2048 for system bandwidth of 1.25, 2.5, 5, 10 or 20 megahertz (MHz), respectively. The system's bandwidth can also be partitioned into sub-bands. For example, a subband can cover 1.08 MHz (ie 6 PRBs), and there can be 1, 2, 4, 8, or 16 subbands for 1.25, 2.5 system bandwidth , 5, 10 or 20 MHz, respectively.
[0066] [0066] Although aspects of the examples described in this document may be associated with LTE technologies, aspects of the present invention may be applicable to other wireless communication systems, such as NR.
[0067] [0067] NR can use OFDM with a CP in the uplink and downlink and include support for half-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 two half frames, each half frame consisting of five subframes, with a length of 10 ms. Consequently, each subframe can be 1 ms long. Each subframe can indicate a link direction (ie DL or UL) for data transmission and the link direction for each subframe can be dynamically switched. Each subframe can include DL / UL data, as well as DL / UL control data. The subframes of UL and DL to NR can be as described in more detail below in relation to Figures 6 and 7. Beam formation can be supported and the beam direction can be dynamically configured. MIMO transmissions with pre-coding can also be supported. The MIMO configurations on the DL can support up to 8 transmission antennas with multi-layered DL transmissions of up to 8 streams and up to 2 streams per UE. Multilayer transmissions with up to 2 streams per EU can be supported. Multiple cell aggregation can be supported with up to 8 service cells. Alternatively, NR can support a different air interface, except one based on OFDM. NR networks can include entities such as CUs and / or DUs.
[0068] [0068] In LTE, the basic transmission time interval (TTI) or packet duration is 1 subframe. In NR, a subframe still has 1 ms, but the basic TTI is called a partition. A subframe contains a variable number of partitions (for example, 1, 2, 4, 8, 16, ... partitions) depending on the tone spacing (for example, 15, 30, 60, 120, 240 ... kHz) .
[0069] [0069] Beam formation generally refers to the use of multiple antennas to control the direction of a wavefront, adequately weighing the magnitude and phase of the individual antenna signals (to transmit the beam formation). The beam formation can result in improved coverage, as each antenna in the array can contribute to the direction signal, a matrix gain (or beam formation gain) being achieved. The reception of the beam formation allows to determine the direction in which the wavefront will arrive (direction of arrival or DoA). It may also be possible to suppress selected interference signals by applying a null beam pattern in the direction of the interference signal. Adaptive beam formation refers to the technique of continuously applying beam formation to a moving receiver.
[0070] [0070] 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 area or cell. service. In this disclosure, as discussed below, the programming entity may be responsible for programming, allocating, reconfiguring and releasing resources for one or more subordinate entities. That is, for scheduled 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 UE can function as a programming entity, programming resources for one or more subordinate entities (for example, one or more other UEs). In this example, the UE is functioning as a programming entity, and other UEs use resources programmed by the UE for wireless communication. A UE can function as a programming entity on a point-to-point (P2P) network and / or on a mesh network. In an example of a mesh network, UEs can communicate directly with each other, in addition to communicating with the programming entity.
[0071] [0071] 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 the programmed resources.
[0072] [0072] Figure 2 illustrates an exemplary logical architecture of a distributed radio access network (RAN) 200, which can be implemented in the wireless communication system illustrated in Figure 1. A 5G 206 access node can include a node controller access (ANC)
[0073] [0073] TRPs 208 can be a DU. TRPs can be connected to one ANC (ANC 202) or to more than one ANC (not shown). For example, for RAN sharing, radio as a service (RaaS), and service-specific AND implementations, TRP can be connected to more than one ANC. A 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 UE.
[0074] [0074] The logical architecture can support fronthauling solutions in different types of implementation. For example, the logical architecture can be based on transmission network resources (for example,
[0075] [0075] The logical architecture can allow cooperation between TRPs 208. For example, cooperation can be predefined within a TRP and / or between TRPs via ANC 202. An inter-TRP interface cannot be used.
[0076] [0076] The logical architecture can support a dynamic configuration of divided logical functions. As will be described in more detail with reference to Figure 5, the Radio Resource Control (RRC) layer, Packet Data Convergence Protocol (PDCP) layer, Radio Link Control (RLC) layer, Medium Access Control (MAC), and Physical layers (PHY) can be adaptably located in the DU or CU (for example, TRP or ANC, respectively). A BS can include a central unit (CU) (for example, ANC 202) and / or one or more distributed units (for example, one or more TRPs 208).
[0077] [0077] Figure 3 illustrates an exemplary physical architecture of a distributed RAN 300, according to aspects of the present disclosure. A centralized core network unit (C-CU) 302 can host core network functions. The C-CU 302 can be implemented centrally. The functionality of C-CU can be transferred (for example, to advanced wireless services (AWS)), in an effort to manage peak capacity.
[0078] [0078] A centralized RAN unit (C-RU) 304 can host one or more ANC functions. The C-RU 304 can host core network functions locally. The C-RU 304 can have a distributed implementation. The C-RU 304 may be closer to the network edge.
[0079] [0079] A DU 306 can host one or more TRPs (edge node (EN), edge unit (EU), radio head (RH), smart radio head (SRH), or the like). DU 306 can be located at the edges of the network with radio frequency (RF) functionality.
[0080] [0080] Figure 4 illustrates exemplary components of BS 110 and UE 120 illustrated in Figure 1, which can be used to implement aspects of the present disclosure.
[0081] [0081] As described above, BS 110 can be a gNB, TRP etc. One or more components of BS 110 and UE 120 can be used to practice aspects of the present disclosure. For example, antennas 452, Tx / Rx 222, processors 466, 458, 464 and / or controller / processor 480 of UE 120 and / or antennas 434, processors 460, 420, 438 and / or controller / processor 440 of BS 110 can be used to perform the operations described here and illustrated with reference to Figures 11, 17 and 20.
[0082] [0082] Figure 4 shows a block diagram of a BS 110 and UE 120 project, which can be one of the BSs and one of the UEs in Figure 1. For a restricted association scenario, BS 110 may be the macro BS 110c in Figure 1, and UE 120 can be UE 120y. BS 110 can also be a BS of some other type. BS 110 can be equipped with antennas 434a to 434t, and UE 120 can be equipped with antennas 452a to 452r.
[0083] [0083] In BS 110, a transmission processor
[0084] [0084] At UE 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 receiving processor 458 can process (e.g., demodulate, deinterleave and decode) the detected symbols, provide decoded data to the UE 120 to a data collector 460, and provide decoded control information to a controller / processor 480.
[0085] [0085] In the uplink, in the UE 120, a transmission processor 464 can receive and process data (for example, for the Uplink Shared Physical Channel (PUSCH)) from a 462 data source and control information (for example, for the Physical Uplink Control Channel (PUCCH) of the controller / processor 480. The transmission processor 464 can also generate reference symbols for a reference signal.The symbols of the transmission processor 464 can be pre-encoded by a TX MIMO processor 466, if applicable, further processed by demodulators 454a to 454r (for example, for SC-FDM etc.), and transmitted to base station 110. At BS 110, uplink signals from UE 120 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 UE 120. The receiving processor 438 p It can provide the decoded data to a 439 data collector and the decoded control information to the 440 controller / processor.
[0086] [0086] The controllers / processors 440 and 480 can direct the operation on BS 110 and UE 120, respectively. The 440 processor and / or other processors and modules in BS 110 can execute or direct the execution of processes for the techniques described in this document. Processor 480 and / or other processors and modules in UE 120 can also execute or direct, for example, the execution of the functional blocks illustrated in Figures 11, 17 and 20 and / or other processes for the techniques described in this document. Memories 442 and 482 can store data and program codes for BS 110 and UE 120, respectively. A 444 programmer can program UEs for data transmission on the downlink and / or uplink.
[0087] [0087] Figure 5 illustrates a diagram 500 showing examples for implementing a stack of communication protocols, according to the aspects of the present disclosure. The stacks of illustrated communication protocols can be implemented by devices that operate on a 5G system (for example, a system that supports uplink-based mobility). Diagram 500 illustrates a stack of communication protocols, including a Radio Resource Control (RRC) layer 510, a Packet Data Convergence Protocol (PDCP) 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, portions of a processor or ASIC , portions of non-colocalized devices connected by a communication link or various combinations thereof. Co-located and non-co-located implementations can be used, for example, in a protocol stack for a network access device (for example, ANs, CUs and / or DUs) or a UE.
[0088] [0088] 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 a distributed network access device (for example, DU 208 in Figure 2). In the first option 505-a, an RRC layer 510 and a PDCP layer 515 can be implemented by the central unit, and an RLC layer 520, a MAC layer 525 and a PHY 530 layer can be implemented by the DU. In several examples, CU and DU can be colocalized or non-colocalized. The first option 505-a can be useful in a macrocell, microcell or pico-cell implementation.
[0089] [0089] 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 (for example, access node (AN), network base station) new radio (BS NR), a new radio B node (NB NR), a network node (NN) or similar). In the second option, the RRC layer 510, the PDCP layer 515, the layer RLC 520, the layer MAC 525 and the layer PHY 530 can each be implemented by the AN. The second option 505-b can be useful in a femto-cell implementation.
[0090] [0090] Regardless of whether a network access device implements part or all of a protocol stack, a UE can implement an entire protocol stack (e.g., RRC 510 layer, PDCP 515 layer, RLC 520 layer, the MAC 525 layer and the PHY 530 layer).
[0091] [0091] Figure 6 is a diagram showing an exemplary format of a DL 600 centric subframe. The DL 600 centric subframe may include a control portion 602. The control portion 602 may exist in the initial or incipient portion of the subframe. DL centric
[0092] [0092] The DL 600 centric subframe can also include a common UL 606 portion. The common UL 606 portion can sometimes be referred to as a UL burst, a common UL burst and / or several other suitable terms. The common UL portion 606 may include feedback information corresponding to several other portions of the DL 600 centric subframe. For example, the common UL portion 606 may include feedback information corresponding to the control portion 602. Non-limiting examples of information from feedback may include an ACK signal, a NACK signal, a HARQ indicator and / or various other suitable types of information. The common UL portion 606 may include additional or alternative information, such as information pertaining to random access channel (RACH) procedures, programming requests (SRs) and various other suitable types of information. As shown in Figure 6, the end of the DL 604 data portion can be separated in time from the start of the common UL portion
[0093] [0093] Figure 7 is a diagram showing an exemplary format of a UL 700 centric subframe. The UL 700 centric subframe may include a control portion 702. The control portion 702 may exist in the initial or incipient portion of the subframe. UL centric
[0094] [0094] As shown in Figure 7, the end of the control portion 702 can be separated in time from the beginning of the UL 704 data portion. This separation in time can be referred to as an interval, guard period, guard 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 centric subframe of UL 700 may also include a portion of common UL 706. The portion of common UL 706 in Figure 7 may be similar to the portion of common UL 606 described above with reference to Figure 6. The portion of common UL 706 may additional or alternatively include information pertaining to the channel quality indicator (CQI), audible reference signals (SRSs) and various other suitable types of information. One skilled in the art will understand that the above is just an example of a centric UL subframe and that alternative structures having similar characteristics can exist without necessarily deviating from the aspects described here.
[0095] [0095] In one example, a table may include centric subframes of UL and centric subframes of DL. In this example, the ratio of centric UL subframes to DL subframes in a frame can be dynamically adjusted based on the amount of UL data and the amount of DL data that is transmitted. For example, if there is more UL data, then the ratio of UL centric subframes to DL subframes may be increased. On the other hand, if there is more DL data, the ratio of UL centric subframes to DL subframes may be reduced.
[0096] [0096] In some circumstances, two or more subordinate entities (for example, UEs) can communicate with each other using sidelink signals. Actual applications of these sidelink communications may include public security, proximity services, UE relaying to the network, vehicle-to-vehicle (V2V) communications, Internet of Everything (IoE) communications, IoT communications, mission-critical mesh and / or various other suitable applications. In general, a sidelink signal can refer to a signal communicated from a subordinate entity (for example, UE1) to another subordinate entity (for example, UE2) without relaying that communication by the programming entity (for example, UE or BS ), even if the programming entity can be used for programming and / or control purposes. In some instances, sidelink signals can be communicated using a licensed spectrum (as opposed to wireless local area networks, which normally use an unlicensed spectrum).
[0097] [0097] An UE can operate in a variety of radio resource configurations, including a configuration associated with broadcast pilots using a dedicated resource set (for example, a dedicated radio resource control state (RRC) etc.) or a configuration associated with transmission pilots using a common set of resources (for example, a common RRC state, etc.). When operating in the dedicated RRC state, the UE can select a dedicated set of resources to transmit a pilot signal to a network. When operating in the common state of RRC, the UE can select a common set of resources to transmit a pilot signal to the network. In either case, a pilot signal transmitted by the UE can be received by one or more network access devices, such as an AN, DU or portions 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 UEs for which the network access device is a member of a monitoring set of network access devices for the UE. One or more reception network access devices, or a CU to which the reception network access device (s) transmit the pilot signal measurements, can use the measurements to identify service cells for the UEs, or to initiate a change of service cell for one or more of the UEs. EXEMPLIFICATIVE SYNCHRONIZATION SIGNAL BLOCK DESIGN
[0098] [0098] In certain respects, cell synchronization procedures may involve a base station (for example, BS 110) that performs the broadcasting of a set of signals on an SSB to facilitate cell search and synchronization by UEs (for example , UEs 120).
[0099] [0099] Figure 8 illustrates an example of the structure of an SSB 800 broadcast by a BS (for example, BS 110). The SSB 800 configuration includes a PSS 810, an SSS 820, and PBCH 830 multiplexed between the PSS 810 and SSS 820 as shown in Figure 8. The PBCH 830 can include reference signals, such as demodulation reference signals (DMRS) . Therefore, each SSB 800 transmitted by BS 110 can assist the UE 120 in determining system timing information, such as a symbol timing based on PSS 810, cell identification based on PSS 810 and SSS 820, and other parameters required for initial cell access based on a Master Information Block (MIB) sent on PBCH 830.
[0100] [0100] In some implementations, the PSS 810 and SSS 820 each occupy a symbol in the time domain, while the PBCH 830 occupies two symbols, but is divided into two parts with a first half in a symbol between the PSS 810 and SSS 820, and a second half in a second symbol after SSS 820, as seen in Figure 8. In the frequency domain, the PSS 810 and SSS 820 can each occupy 127 resource elements or subcarriers, while the PBCH 830 it can occupy 288 resource elements. In some embodiments, a feature element refers to a symbol on a sub-carrier of a feature block. For example, when a resource block comprises 12 subcarriers and 7 symbols, the resource block can comprise 84 (12 subcarriers * 7 symbols) resource elements in the case of a normal cyclic prefix (72 for extended CP). The frequency location of the SSB 800 may not necessarily be at the center of 6 frequency band resource blocks, but it may vary depending on the synchronization raster and may be a function of channel raster parameters.
[0101] [0101] Base station 110 may periodically transmit an SSB 800 to allow UEs 120 the opportunity to synchronize with the system. In certain respects, base station 110 can transmit multiple instances of SSBs in a burst of sync signal (SS burst), instead of, for example, only one instance of PSS and SSS every 5 ms. In an SS burst, multiple SSB transmissions can be sent within a 5 ms time window. Multiple SSB transmissions can allow for improvements in coverage and / or directional beams to UEs at different locations. For example, BS can transmit SSBs using different transmission beams that are spatially directed to different locations, thus allowing UEs in each of the different locations to receive SSBs. BS 110, however, can be limited by predefined rules regarding the number of SSBs that can be transmitted within a particular time frame. The limitations can be based on a number of factors, including the particular subcarrier spacing used by the system and the frequency band in which the system operates.
[0102] [0102] Figure 9 illustrates exemplary 900 configurations of SSB transmission opportunity patterns based on various system parameters. As shown in Figure 9, the number of SSB transmission opportunities for a BS 110 and the corresponding locations of SSB transmission opportunities within a measurement window (for example, 5 ms window) may depend on the subcarrier spacing employed BS and the frequency band in which BS operates. The UE can measure the cell's discovery reference signal (DRS) according to periodically configured DRS measurement timing (DMTC) configuration windows.
[0103] [0103] The DMTC can be configured for measurements of a service cell or adjacent cells, or both. In addition, DMTC can be frequency specific or can be applied to multiple frequencies in several examples. The length of a partition in each configuration can vary depending on the subcarrier spacing used in the configuration. In the 910 configuration, a 120 kHz subcarrier spacing is used within a frequency band above 6 GHz (for example, 60 GHz frequency band). Within a 5 ms window, base station 110 in this 910 configuration may be allowed to transmit L = 64 SSBs (ie, two SSBs per partition), which may need to be transmitted according to a particular pattern of allocated resources for SSBs.
[0104] [0104] In the 920 configuration, a 240 kHz subcarrier spacing is used within a frequency band above 6 GHz (for example, 60 GHz), and the maximum number of SSB transmissions is L = 64, which can be be transmitted according to a particular pattern of resources allocated to the SSBs. The 64 SSBs can be referred to as a set of SS bursts. The standard and maximum number of SSBs allowed within a measurement window may vary in other configurations, depending on the subcarrier spacing used and the frequency band in which the base station 110 and UE 120 operate.
[0105] [0105] Figure 10 illustrates an exemplary 1000 configuration of SSB transmission opportunities with reference to frequency and time resources (for example, symbols). For simplicity, Figure 10 illustrates three SSB transmission opportunities, but the number of SSB transmission opportunities within a set of SS bursts can be greater, such as L = 64 SS blocks in a set of SS bursts. for operation in frequency bands above 6 GHz (for carrier frequencies below 3 GHz, L can be 4, and for carrier frequencies between 3 and 6 GHz, L can be 8). In some cases, there may be predefined locations within a measurement window that are allocated for SSB transmissions. For example, resources corresponding to the SSB 1010, 1020 and 1030 transmission opportunities can be allocated to transmission SSBs, and a base station can choose to transmit at all, none or any combination of SSB 1010, 1020 transmission opportunities or 1030.
[0106] [0106] Base station 110 may choose to transmit SSBs on SSB 1010 and 1030 transmission opportunities, while refraining from transmitting on SSB 1020 transmission opportunity. In this scenario, base station 110 transmits SSBs on transmission opportunities. SSB 1010 and 1030 transmission in a way that is not “logically consecutive”, that is, there may be intermediate SSB transmission opportunities (for example, corresponding to the SSB 1020 transmission opportunity) between SSB transmission opportunities (1010 and 1030 ) where base station 110 does not transmit an SSB. Alternatively, base station 110 can transmit SSBs at SSB transmission opportunities 1010 and 1020; in this case, the transmitted SSBs are considered logically consecutive.
[0107] [0107] As described above, for initial access to a cell, the UE can obtain system information. System information, in some cases, may include minimum system information (MSI) and other system information (OSI). Using the MSI, the UE is able to perform a random access channel (RACH) procedure with the cell. In some cases, the MSI includes information carried by the PBCH (similar to the master information block (MIB) in LTE), as well as remaining minimum system information (RMSI). The information carried by the PBCH (similar to the MIB) is information that is used by the UE to acquire other information from the cell (BS). ISMS includes information regarding UE cell access (BS), as well as configuration of radio resources common to all UEs in the cell. RMSI can be interchangeably referred to as system information block 1 (SIB1), RMSI CORESET can be interchangeably referred to as CORESET of downlink control physical channel (PDCCH) Type0 common search space (ie CORESET configuration for common downlink control physical channel (PDCCH) Type 0 search space, the OSI CORESET can be interchangeably referred to as Type0a downlink control physical channel (PDCCH) common search space. The RMSI, as described above, is carried over a shared physical downlink channel (PDSCH). UEs are programmed to communicate using PDSCH resources based on information sent in the PDCCH. PDSCH can also transport OSI.
[0108] [0108] PDCCH resources, which program the RMSI, can be transmitted by a BS in a resource control set (CORESET) within an RMSI PDCCH monitoring window associated with the SSB. In other words, the PDCCH is mapped to CORESET. The RMSI PDCCH monitoring window has an offset, a duration (for example, length) and a periodicity.
[0109] [0109] A CORESET can be defined with respect to the frequency domain and the time domain. In the frequency domain, CORESET is defined by the number of resource blocks (PRBs) (for example, 24 PRBs, 48 PRBs), which can be referred to as the CORESET bandwidth (for example, multiples of 6 PRBs). In some cases, PRBs may be contiguous or non-contiguous. In the time domain, CORESET is defined by the number of OFDM symbols. A symbol refers to a time feature. For example, the downlink control region in the time partition can have up to 3 OFDM symbols. In some modalities, CORESET can be a CORESET with one symbol, a CORESET with two symbols or a CORESET with three symbols.
[0110] [0110] In some cases, the RMSI CORESET is a CORESET in which the PDCCH resources, to program the PDSCH that carries RMSI, are mapped. In some cases, the CORESET configuration of RMSI can be signaled on the PBCH, which is carried by an SSB. The CORESET configuration of RMSI can include information regarding the bandwidth (BW) of CORESET of RMSI (for example, the number of CORESET PRBs of RMSI in the CORESET of RMSI can be referred to as the bandwidth (BW) of CORESET RMSI), the RMSI frequency shift value, and the OFDM symbols. In some cases, the OSI CORESET is a CORESET in which the PDCCH resources, to program the PDSCH that carries OSI, are mapped.
[0111] [0111] Certain modalities described in this document refer to the ability of a wireless communication device, such as a UE, to determine the location of the RMSI CORESET and the OSI CORESET in the frequency and time domains. Upon receiving the RMSI CORESET, the UE is able to receive the PDCCH (PDCCH Type0) in the RMSI CORESET (common PDCCH Type0 research space), on the basis of which the UE is able to receive and decode the PDSCH that carries RMSI . In addition, the UE can determine the location of the OSI CORESET in the frequency and time domains based on the RMSI CORESET location in the frequency and time domains.
[0112] [0112] Note that the RMSI CORESET locations in the frequency and time domains can be interchangeably referred to in this document as the RMSI CORESET frequency location and time location, respectively. In addition, the OSI CORESET locations in the frequency and time domains can be interchangeably referred to in this document as the OSI CORESET frequency location and time location, respectively. EXAMPLIFICATIVE RMSI DISPLACEMENT PROJECT
[0113] [0113] In some embodiments, determining the location of the ISMS CORESET in the frequency and time domains may be based on the location of the SSB transmission in the frequency and time domains.
[0114] [0114] Figure 11 is a flow chart illustrating exemplary 1100 operations for wireless communications. Operations 1100 can be performed, for example, by a UE (e.g., UE 120) to determine the ISDN CORESET location in the frequency domain. Operations 1100 begin in 1102, by receiving a Type0 control resource set (CORESET) configuration of the Type0 physical downlink control (PDCCH) common channel space and a physical resource block (PRB) grid offset on a physical broadcasting channel (PBCH) carried by a synchronization signal block (SSB), the CORESET configuration of the PDCCH Type0 common search space comprising an indication indicating one or more displacement values corresponding to one or more displacements related to CORESET resource block frequency locations (PRBs) of Type0 common PDCCH search space relative to SSB PRB frequency locations. In 1104, 1100 operations continue by aligning an SSB PRB grid with a PRESCH Type0 common search space CORESET grid applying the PRB grid offset. In 1106, 1100 operations continue by mapping the indication to one or more offset values using a mapping stored by the UE. In 1108, 1100 operations continue by determining the frequency locations of the CORESET PRBs of the common type 0 PDCCH search space based on one or more offset values and the frequency locations of the SSB PRBs. In 1110, operations 1100 continue by receiving PDCCH Type0 in the CORESET of the common search space of PDCCH Type0.
[0115] [0115] Figure 11A illustrates an 1100A wireless communication device that can include various components (for example, corresponding to half-plus-function components) configured to perform operations for the techniques disclosed in this document, such as one or more of the operations illustrated in Figure 11. The communication device 1100A includes a processing system 1114 coupled to a transceiver 1112. Transceiver 1112 is configured to transmit and receive signals to the communication device 1100A via an antenna
[0116] [0116] Processing system 1114 includes a processor 1109 coupled to a computer-readable medium 1111 via a 1121 bus. In certain aspects, the computer-readable medium 1111 is configured to store instructions that, when executed by the processor 1109, cause processor 1109 to perform one or more of the operations illustrated in Figure 11, or other operations to perform the various techniques discussed in this document.
[0117] [0117] In certain respects, processing system 1114 further includes a receiving component 1120 to perform one or more of the operations illustrated in 1102 in Figure 11. Additionally, processing system 1114 includes an alignment component 1122 to perform one or more more of the operations illustrated in 1104 in Figure 11. In addition, processing system 1114 includes a mapping component 1124 to perform one or more of the operations illustrated in 1106 in Figure 11. In addition, processing system 1114 includes a component of determining 1126 to perform one or more of the operations illustrated in 1108 in Figure 11. In addition, processing system 1114 includes a receiving component 1128 to perform one or more of the operations illustrated in 1110 in Figure 11.
[0118] [0118] Receiving component 1120, alignment component 1122, mapping component 1124, determining component 1126 and receiving component 1128 can be coupled to processor 1109 via bus 1121. In certain respects, the receiving 1120, alignment component 1122, mapping component 1124, determining component 1126 and receiving component 1128 can be hardware circuits. In certain aspects, the receiving component 1120, the alignment component 1122, the mapping component 1124, the determining component 1126 and the receiving component 1128 can be software components that run and run on processor 1109.
[0119] [0119] With respect to determining the location of the RMSI CORESET in the frequency domain, as described above, the UE can receive a PRB grid offset and the RMSI CORESET configuration in the PBCH, which, as described above, includes an indication of one or more ISDN frequency shift values. The UE can first align the SSB PRB grid with the RMSI CORESET PRB grid by applying the PRB grid offset. The SSB PRB grid refers to a set of PRBs, which are allocated to broadcast SSBs, in a higher frequency resource grid that matches the entire frequency bandwidth. Likewise, an RMSI CORESET PRB grid refers to a set of PRBs, which are allocated to transmit the RMSI CORESET, in a grid of higher frequency resources that corresponds to the entire frequency bandwidth. The UE can then use the indication to determine the RMSI CORESET bandwidth, as well as the offset frequency values, which provide an indication of the RMSI CORESET frequency locations with respect to the SSB frequency locations.
[0120] [0120] For example, in some modalities, the RMSI CORESET can be multiplexed by time division (TDM’d) with the SSB. In some embodiments, the frequency shift between the RMSI CORESET and SSB (after physical resource block grid (PRB) alignment with the RMSI CORESET PRB grid using the PRB grid offset signaled on the PBCH) can be the difference of frequency from the lowest (ie, lowest) PRB (ie, PRB0) of SSB to the lowest (ie, lowest) PRB (ie, PRB0) of RMSI CORESET. As an example, when the SSB PRB grid with the RMSI CORESET PRB grid are aligned, an offset value of zero may indicate that the lowest (i.e., lowest) SSB PRB and the lowest (i.e., the smallest) PRMS of the RMSI CORESET have the same index number or frequency.
[0121] [0121] Figures 12A-12C each illustrates a PRB grid, each including a number of consecutive SSB PRBs and a number of consecutive ISMS CORESET PRBs. As shown in each of Figures 12A-12C, the SSB PRBs and the RMSI CORESET PRBs are selected so that they have the maximum number of overlapping PRBs. For example, the first column (column l202a, l202b and l202c) in each PRB grid illustrates the PRBs (shown in rows) that include SSB PRBs (for example, shown as shaded). Each of the remaining columns (columns l204a, l204b and l204c) in each PRB grid illustrates the PRBs that include RMSI CORESET PRBs (for example, shown as shaded). The columns that are to the right of the first column (for example, l202a, l202b or l202c) are ordered from 0, 1, ... n (as shown in the last row of the grid that does not correspond to an RB, but is a label for the PRB grid), which correspond to the offsets used to determine the RMSI CORESET PRBs. The different columns do not mean to imply the transmission at different times. As shown, the number of possible offsets is any offsets value where the RMSI CORESET PRBs completely overlap the SSB PRBs.
[0122] [0122] For example, in Figure 12A, there are 20 SSB PRBs and 24 RMSI CORESET PRBs. The 24 RMSI CORESET PRBs can be selected and transmitted in one of five different scenarios, each corresponding to a specific offset, in order to maximize the number of overlapping PRBs between the SSB PRBs and the RMSI CORESET PRBs. In the first scenario, the initial PRB (PRB0) of the SSB is the same as the initial PRB of the RMSI CORESET. In this example, the frequency shift of the RMSI CORESET with respect to SSB PRBs is 0 (zero). In the second scenario, the CORESET frequency of RMSI starts as a PRB below the initial PRB (PRB0) of SSB. In this example, the frequency shift of the RMSI CORESET with respect to the SSB PRBs is 1. As shown in Figure 12A, the subcarrier spacing used for the transmission of the RMSI CORESET is the same as the subcarrier spacing used for the transmission. of SSB. However, in Figures 12B and 12C, the subcarrier spacing (SCS) used for the transmission of CORESET from RMSI is different from the subcarrier spacing used for the transmission of SSB. For example, in Figure 12B, the RMSI SCS is half of the SSB SCS. In Figure 12C, the RMSI SCS is twice the SSB SCS. Therefore, in Figure 12B, each consecutive RMSI CORESET is an offset from the RMSI CORESET in frequency by half the SSB SCS. In addition, in Figure 12C, each consecutive RMSI CORESET is an offset from the RMSI CORESET in frequency by twice the SSB SCS. Note that, in the modalities of this document, the RMSI subcarrier spacing (ie, common search space of PDCCH Type0), CORESET is defined by the PDCCH subcarrier spacing (for example, PDCCH Type0). In other words, the spacing of the CORESET subcarrier of PDCCH Type0 common search space can be the same as the spacing of the PDCCH Type0 subcarrier.
[0123] [0123] In some embodiments, the frequency shift is in one step of a multiple integer of PRB (s) with respect to CORESET sub-carrier spacing from RMSI (SCS). In other words, an offset value of a frequency offset is in multiples of an offset step and is based on at least one offset step size and sub-carrier spacing (SCS) of the RMSI CORESET. In some embodiments, a shift value of a frequency shift also depends on the CORESET bandwidth of RMSI. In some embodiments, the size of the shift step depends on the bandwidth of CORESET of RMSI or the SCS of SSB or the SCS of RMSI or any combination thereof. An offset step size can be 1 PRB or greater (for example, 2 PRBs, 6 PRBs, 8 PRBs etc.).
[0124] [0124] In order for an UE (for example, 120), which is receiving the RMSI CORESET, to determine the location of the RMSI CORESET frequency resources, in some modalities, the BS (for example, 110) can transmit to the UE an indication of the displacement values corresponding to the displacement between the RMSI CORESET PRBs and the SSB PRBs. This indication can be carried by the CORESET configuration of RMSI in the PBCH, which is carried by an SSB. In such modalities, knowing the RMSI CORESET SCS, the UE can then use a mapping (for example, such as a hash function, hash map or any other type of mapping) to map the information contained in the indication to a specific BW CORESET of RMSI and displacement values. The UE can then use the location of the SSB PRBs (which are known to the UE) and apply the received offset values to determine the location of the RMSI CORESET PRBs.
[0125] [0125] However, as discussed, there may be a large number of possible frequency shift values for the RMSI CORESET, depending on the RMSI SCS. Figure 13 illustrates an example table 1300 showing the possible number of frequency shift values that BS can indicate to the UE in the indication at various intervals (depending on the SCS of CORESET by RSMI and BW by CORESET by RMSI). As shown, depending on the RMSI CORESET SCS, there may be a large number of possible frequency shift values for the BS to indicate to the UE. For example, when the RMSI CORESET BW is 24, the SSB BW is 20, and the RMSI CORESET SCS = SSB SCS, there are 5 possible offset values for the RMSI CORESET. In addition, when the RMSI CORESET BW is 48, the SSB BW is 20, and the RMSI CORESET SCS = SCS of
[0126] [0126] For example, in some modalities, the UE can be configured with a mapping that allows the BS to transmit an indication to the UE more efficiently and that consumes less resources. More specifically, the mapping allows a smaller number of bits to be sent to the UE to indicate the offset values in the indication.
[0127] [0127] Figure 14 illustrates an example table 1400 showing the minimum possible number of frequency shift values that BS can indicate to the UE in the indication in various scenarios (depending on the SCS of RSMI CORESET and BW of CORESET of RMSI). For example, mapping based on the configuration and offset values shown in table 1400 allows fewer bits to be transmitted by the BS in an indication to the UE.
[0128] [0128] As shown, the table provides different RMSI frequency offset values, depending on the RMSI CORESET SCS and the SSB SCS. However, compared to table 1300 in Figure 13, the offset steps of table 1400 are greater than the offset steps of table 1300. For example, when SCS of RMSI = SCS of SSB and the CORESET bandwidth of ISRM is 24 PRBs, as shown in Figure 12A, the shift step can be set to 2. Therefore, the shift values can be 0, 2 and 4 (only 3 shift values) in PRBs, instead of 0 , 1, 2, 3 and 4, as shown in table 1300. In another example, when RMSI SCS = SSB SCS and the RMSI CORESET bandwidth is 48, the offset step can be 6, as shown. Therefore, the displacement values can be 0, 6, 12, 18, 24 (only 5 displacement values), instead of 0-28 (29 displacement values), as shown in the table
[0129] [0129] In some modalities, instead of the CORESET of RMSI and SSB being TDM’d, the CORESET of RMSI and SSB can be multiplexed by frequency division (FDM'd). Figure 15 shows three examples of how CORESET from RMSI can be FDM’d with SSB. Each column of the rows represents a frequency location (for example, PRB). Each of the three lines, showing an example in a different way that the RMSI CORESET can be FDM'd with SSB, represents frequency resources (some of which are used for RMSI CORESET and some of which are used for SSB) that are received by the EU at the same time. As shown, the CORESET of RMSI can be FDM'd at higher frequencies, lower frequencies or on both sides (upper and lower frequencies) of the SSB. For example, the CORESET of RMSI l504a is FMD’d on the upper side of SSB l502a in example (a). In example (b), the CORESET of RMSI l504b is FDM'd on the underside of SSB l502b. In example (c), the CORESET of RMSI 1504c is FDM'd on both sides of the SSB l502c.
[0130] [0130] When the RMSI CORESET is FDM'd with the SSB, the RMSI CORESET configuration may include an indication of offset values corresponding to the offset between the RMSI CORESET PRBs and the SSB PRBs. This indication carried by the CORESET configuration of RMSI in the PBCH. In such modalities, knowing the RMSI CORESET SCS, the UE can then use a mapping (for example, such as a hash function, hash map or any other type of mapping) to map the information contained in the indication to a specific BW CORESET of RMSI and displacement values. The UE can then use the location of the SSB PRB resources (which are known to the UE) and apply the received offset values to determine the location of the ISMS CORESET PRBs. In some modalities, the mapping can be based on configuration examples and displacement values shown in the table
[0131] [0131] Figure 16 illustrates the example table 1600, which shows different displacement values depending on whether the RMSI SCS and the SSB SCS are the same or different. For example, where the RMSI SCS = SSB SCS and the RMSI CORESET bandwidth is 24, the offset values can be - (20 + G), {6, 12, 18, 24} + G0. These offset values may indicate that the SSB starts as a -20PRB frequency, followed by a guard period (G), followed by 24 RMSI CORESET PRBs, in units of, for example, 6PRBs (the control channel element ( CCE) for PDCCH are 6 PRBs). Similar to the TDM example, in the FDM example, table 1600 includes fewer offset values for each specific RMSI SCS and RMSI CORESET BW than is physically possible.
[0132] [0132] In addition to determining the RMSI CORESET location in the frequency domain, the UE can determine the RMSI CORESET time location in the time domain.
[0133] [0133] Figure 17 is a flow chart illustrating exemplary 1700 operations for wireless communications. 1700 operations can be performed, for example, by a UE (for example, UE 120), to determine the RMSI CORESET location in the time domain. Operations in 1700 begin, in 1702, by storing a mapping of synchronization signal block (SSB) time resources in time resources of the control resource set (CORESET) of common research space of physical control channel. downlink (PDCCH) Type0. In 1704, 1700 operations continue to receive an indication of SSB time resources. In 1706, 1700 operations continue to determine CORESET time resource locations from RMSI based on mapping and indication. In 1708, 1700 operations continue by receiving PDCCH Type0 in a common search space CORESET of PDCCH Type0.
[0134] [0134] Figure 17A illustrates a 1700A wireless communication device that can include various components (for example, corresponding to half-plus-function components) configured to perform operations for the techniques disclosed in this document, such as one or more of the operations illustrated in Figure 17. The 1700A communication device includes a 1714 processing system coupled to a 1712 transceiver. The 1712 transceiver is configured to transmit and receive signals to the 1700A communication device via an antenna
[0135] [0135] The 1714 processing system includes a 1709 processor coupled to a 1711 computer / memory readable medium through a 1721 bus. In certain aspects, the 1711 computer / readable medium is configured to store instructions that, when executed by the processor 1709, cause processor 1709 to perform one or more of the operations illustrated in Figure 11, or other operations to perform the various techniques discussed in this document.
[0136] [0136] In certain respects, processing system 1714 still includes a storage component 1720 to perform one or more of the operations illustrated in 1702 in Figure 17. Additionally, processing system 1714 includes a receiving component 1722 to perform one or more more of the operations illustrated in 1704 in Figure 17. In addition, the processing system 1714 includes a determination component 1724 to perform one or more of the operations illustrated in 1706 in Figure 17. In addition, the processing system 1714 includes a component of reception 1726 to perform one or more of the operations illustrated in 1708 in Figure 17.
[0137] [0137] The storage component 1720, the receiving component 1722, the determining component 1724 and the receiving component 1726 can be coupled to processor 1709 via the 1721 bus. In certain respects, the storage component 1720, the receiving 1722, determining component 1724 and receiving component 1726 can be hardware circuits. In certain aspects, the storage component 1720, the receiving component 1722, the determining component 1724 and the receiving component 1726 can be software components that run and run on processor 1709.
[0138] [0138] In some modalities, the RMSI CORESET can be mapped on the downlink time partitions. CORESET RMSI mapping on downlink partitions allows flexible multiplexing of time partitions with different numerologies, as well as flexible downlink (DL) and uplink (UL) partition switching and UL and DL switching within a time partition. In some modalities, there may be different options for mapping the RMSI CORESET on the DL partitions. For example, in some embodiments, RMSI CORESET (s) are mapped to the downlink partitions containing SSB (s) only. In some embodiments, for some SS burst set patterns, RMSI CORESET (s) are first mapped on the downlink partitions containing SSB (s) and then mapped on the downlink partitions without SSB (s). In some embodiments, for some SS burst set patterns, RMSI CORESET (s) are mapped to downlink partitions without SSB (s) only.
[0139] [0139] In some embodiments, the RMSI CORESET time location can be determined in relation to the SSB time location. For example, in some embodiments, there may be a one-to-one mapping or a one-to-many mapping between the SSB timing and the RMSI CORESET timing. Once the UE detects PSS / SSS and decodes PBCH, the UE can infer the timing of RMSI CORESETs.
[0140] [0140] In some embodiments, the CORESET location of ISMS in time can be defined in relation to each SSB location. In some embodiments, the RMSI CORESET location in time can be defined so that the 1st RMSI CORESET is shifted to the 1st SSB and the following RMSI CORESETs defined with a configured distance between RMSI CORESETs. In some embodiments, the RMSI CORESET location in time can be a fixed location for each value in the RMSI configuration table. In some embodiments, the timing of the RMSI PDCCH monitoring window (containing one or more RMSI CORESET (s) associated with an SSB) can be set in relation to the corresponding SSB timing. In one example, the initial timing of the first RMSI PDCCH monitoring window associated with the first SSB is defined to be relative to the timing of the first SSB timing, and the timing of other RMSI PDCCH monitoring windows associated with the other SSBs is defined as relating to the timing of the first ISDN PDCCH monitoring window. The relative timing between the RMSI PDCCH monitoring window and the associated SSB can be fixed or signaled to the UE as part of the RMSI configuration. If it is signaled in the RMSI configuration, it can be encoded together with other information in the configuration, such as the RMSI CORESET configuration.
[0141] [0141] Figure 18 illustrates how a collection of Figures 18A-18D can be arranged to show a complete figure, including exemplary mappings between RMSI timing locations and SSB timing locations for a frequency band below 6 GHz In other words, different portions of Figure 18 are illustrated by Figures 18A-18D and Figure 18 indicates the correct arrangement of how Figures 18A-18D can be placed next to each other to create a complete Figure 18.
[0142] [0142] These mappings, which can be stored by the UE, allow the UE to determine the time symbols in which the RMSI CORESET is received based on the time symbols in which the SSB is received. Figures 18A-18D illustrate different mappings between the RMSI timing locations and the SSB timing locations for different combinations of RMSI and SSB CORESET subcarrier spacing (SCS).
[0143] [0143] Each column of the mappings shown in Figure 18A corresponds to a time symbol. For example, the first column corresponds to the time symbol 0, and the second column corresponds to the time symbol 1. In addition, each line is shown as an illustration of SSMS and CORESET resources from RMSI received in different time symbols. As there are 14 time symbols in each time partition, the aggregate of time resources in columns 0-13, for example, in row 2 corresponds to a time partition (shown in Figures 18A and 18B). In another example, where the RMSI and SSB CORESET SCSs are 30 kHz, the aggregate of time resources in columns 0-13 of row 13 also corresponds to a time partition. In certain respects, the content of the SSB and RMSI can be FDM’d together based on the frequency of the RMSI according to the modalities here.
[0144] [0144] For example, in modes where the SSB and RMSI SCS are 15 kHz, the mappings between the SSB time symbols and the RMSI CORESET time symbols are shown in lines 2-5, where the second line shows the location of the SSB time symbols, and lines 3-5 show the location of the RMSI CORESET time symbols in relation to the SSB time symbols. More specifically, line 3 shows the mapping between the RMSI CORESET time symbols and the SSB time symbols when the RMSI CORESET has a length symbol. For example, the second line includes the time symbols of SSB 2-5 and 8-11 in the first time partition (shown in Figures 18A-18B), as well as the time symbols of SSB 2-5 and 8-9 in the next time partition (shown in Figure 18B) (collectively shown as SSB block 1810).
[0145] [0145] Based on the location of the SSB 1810 PRBs, the UE can determine the location of the RMSI CORESET partitions. For example, when the RMSI and SSB CORESET SCSs are 15 kHz and when the RMSI CORESET time duration is one symbol long (shown in line 3 in Figure 18A), the location of the first CORESET time symbol of ISMS in the first time slice is the time symbol 0 based on the first SSB transmission occupying the time symbols 2-5. Likewise, the location of the second RMSI CORESET time symbol is the time symbol 1, when the second transmission from the SSB in the same time partition occupies the time symbols 8-11. As shown in line 4 of the table, when the RMSI CORESET is 2 symbols in length, however, the RMSI CORESET in the first time partition occupies the time symbols 0 and 1 etc. The different lines (3-5) do not imply transmission at different times or frequencies. They are intended to show the different scenarios, in which the RMSI CORESET can be transmitted with a variety of symbol lengths.
[0146] [0146] Figure 19 illustrates how a collection of Figures 19A-18B can be arranged to show a complete figure, including exemplary mappings between RMSI timing locations and SSB timing locations for a frequency band above 6 GHz Similar to Figure 18, each column in the mapping in Figure 19 corresponds to a time symbol. For example, the first column corresponds to the time symbol 0, and the second column corresponds to the time symbol 1. In addition, each line is shown as an illustration of SSMS and CORESET RMSI resources received in different time symbols. However, the contents of the SSB and the RMSI could be FDM'd together based on the frequency of the RMSI according to the modalities contained herein.
[0147] [0147] As an example, where the SSB and RMSI SCS are both 120 kHz, the mappings between the SSB time symbols and the RMSI CORESET time symbols are shown by lines 11-14 of the table, for when SSB resources are FDM'd in conjunction with RMSI CORESET resources, and rows 16-18 of the table, for when SSB resources are TDM'd in conjunction with RMSI CORESET resources. For example, when the SSB resources are FDM'd in conjunction with the CORESET resources of RMSI, line 11 shows the location of the SSB time symbols and lines 12-14 show the location of the CORESET time symbols of ISMS in relation to SSB time partitions. The different lines (12-14) do not imply the transmission at different times or frequencies. They are intended to show the different scenarios in which the RMSI CORESET can be transmitted with a variety of symbol lengths. EXAMPLIFICATIVE OSI CORESET DISPLACEMENT PROJECT
[0148] [0148] Parameters, such as frequency location, bandwidth and numerology, for OSES CORESET broadcasting are the same as those for the corresponding RMSI CORESET. In certain respects, these parameters are identical for RMSI CORESETs configured by PBCH in all blocks of PBCH or SSB that define a cell from the UE perspective. It is important to note that the CORESET periodicity of OSI may, however, be longer than the CORESET periodicity of RMSI.
[0149] [0149] Therefore, in some embodiments, the UE may determine the location of the OSI CORESET in the frequency and time domains based on the RMSI CORESET location in the frequency and time domains. In such modalities, the time shift between CORESET from OSI and CORESET from RMSI is signaled to the UE (for example, implicitly or explicitly). An implicit signaling occurs when the UE is able to infer the locations of the CORESET time resources from RMSI and CORESET from OSI based on the location of the SBB time resources. An explicit signaling occurs when the UE is able to infer the locations of the CORESET time resources from OSI based on the location of the CORESET time resources from RMSI. Therefore, once the UE successfully acquires the RMSI PDCCH, as described above, it can infer the corresponding OSI CORESET timing to acquire the OSI PDCCH. In some embodiments, the OSI CORESET timing can be defined in relation to the SSB timing. This timing can be signaled in the ISDN to the UE or it can be fixed.
[0150] [0150] The network can configure the CORESET configuration for OSI in RMSI for UE. If none of these settings are signaled to the UE, the UE uses the CORESET setting for RMSI signaled on the PBCH.
[0151] [0151] Figure 20 is a flow chart illustrating exemplary 2000 operations for wireless communications. 2000 operations can be performed, for example, by a UE (for example, UE 120), to determine the location of the OSI CORESET frequency resources. 2000 operations begin, in 2002, by determining frequency locations of the Type 0 control resource set (CORESET) of downlink control physical channel (PDCCH) Type0 on a shared physical downlink channel (PDSCH). In 2004, the 2000 operations continue to determine CORESET frequency locations of Type0a physical downlink control common search space on the PDSCH based on the CORESET frequency locations of the Type0 PDCCH common search space. In 2006, operations in 2000 continued by receiving CORESET's common research space for PDCCH Type0a.
[0152] [0152] Figure 20A illustrates a 2000A wireless communication device that can include various components (for example, corresponding to half-plus-function components) configured to perform operations for the techniques disclosed in this document, such as one or more of the operations illustrated in Figure 20. The 2000A communication device includes a 2014 processing system coupled to a 2012 transceiver. The 2012 transceiver is configured to transmit and receive signals to the 2000A communication device via an antenna
[0153] [0153] The 2014 processing system includes a 2009 processor coupled to a computer-readable medium 2011 using a 2021 bus. In certain aspects, the computer-readable medium 2011 is configured to store instructions that, when executed by the processor 2009, cause processor 2009 to perform one or more of the operations illustrated in Figure 20, or other operations to perform the various techniques discussed in this document.
[0154] [0154] In certain respects, the 2014 processing system still includes a 2020 determination component to perform one or more of the operations illustrated in 2002 in Figure 20. Additionally, the 2014 processing system includes a 2022 determination component to perform one or more more of the operations illustrated in 2004 in Figure 20. In addition, the 2014 processing system includes a 2024 receiving component to perform one or more of the operations illustrated in 2006 in Figure 20.
[0155] [0155] The 2020 determination component, the 2022 determination component and the 2024 receiving component can be coupled to the 2009 processor via the 2021 bus. In certain aspects, the 2020 determination component, the 2022 determination component and the reception 2024 can be hardware circuits. In certain respects, the determination component 2020, the determination component 2022 and the receiving component 2024 can be software components that run and run on the 2009 processor.
[0156] [0156] Figure 21 is a flow chart illustrating exemplary 2100 operations for wireless communications. 2000 operations can be performed, for example, by a UE (for example, UE 120), to determine the location of the OSI CORESET time resources. 2000 operations begin in 2002 by determining locations in the time set of control resources (CORESET) of minimum remaining system information (RMSI) on a shared physical downlink channel (PDSCH). In 2004, 2000 operations continue by determining CORESET time locations of other system information (OSI) in the PDSCH based on the RMSI CORESET time and frequency locations. In 2006, operations in 2000 continue to receive OSI.
[0157] [0157] Figure 21A illustrates a 2100A wireless communication device that can include various components (for example, corresponding to half-plus-function components) configured to perform operations for the techniques disclosed in this document, such as one or more of the operations illustrated in Figure 21. The communication device 2100A includes a processing system 2114 coupled to a transceiver 2112. Transceiver 2112 is configured to transmit and receive signals to the communication device 2100A via an antenna
[0158] [0158] The processing system 2114 includes a processor 2109 coupled to a computer-readable medium 2121 via a 2121 bus. In certain aspects, the computer-readable medium 2111 is configured to store instructions that, when executed by the processor 2109, cause processor 2109 to perform one or more of the operations illustrated in Figure 21, or other operations to perform the various techniques discussed in this document.
[0159] [0159] In certain respects, processing system 2114 still includes a determination component 2120 to perform one or more of the operations illustrated in 2102 in Figure 21. Additionally, processing system 2114 includes a determination component 2122 to perform one or more more of the operations illustrated in 2104 in Figure 21. In addition, the processing system 2114 includes a receiving component 2124 to perform one or more of the operations illustrated in 2106 in Figure 21.
[0160] [0160] The determination component 2120, the determination component 2122 and the receiving component 2124 can be coupled to processor 2109 via bus 2121. In certain aspects, the determination component 2120, the determination component 2122 and the determining component reception 2124 can be hardware circuits. In certain aspects, the determination component 2120, the determination component 2122 and the receiving component 2124 can be software components that are executed and run on processor 2109.
[0161] [0161] The modalities described above refer to operations carried out by a UE. Figure 22, however, describes operations performed by a base station.
[0162] [0162] Figure 22 is a flow chart illustrating exemplary 2200 operations for wireless communications. Operations 2200 can be performed, for example, by a BS (for example, BS 110). Operations 2200 begin, in 2202, by transmitting a block of synchronization signal (SSB) to a user equipment, the SSB comprising a physical broadcasting channel (PBCH) having a space control set (CORESET) configuration. Type0 physical downlink control (PDCCH) common channel search and a physical resource block grid (PRB) offset, the CORESET configuration of the Type0 common PDCCH search space comprising an indicative indication of one or more offset values corresponding to one or more offsets related to CORESET resource block frequency locations (PRBs) from Type0 common PDCCH search space relative to SSB PRB frequency locations. In 2204, the 2000 operations continue by transmitting a PDCCH Type0 in the CORESET of the common search space of PDCCH Type0 for reception by the UE.
[0163] [0163] Figure 22A illustrates a 2200A wireless communication device that can include various components (for example, corresponding to half-plus-function components) configured to perform operations for the techniques disclosed in this document, such as one or more of the operations illustrated in Figure 22. The communication device 2200A includes a processing system 2214 coupled with a transceiver 2212. Transceiver 2212 is configured to transmit and receive signals to the communication device 2200A via an antenna
[0164] [0164] The processing system 2214 includes a processor 2209 coupled to a computer-readable medium 2221 via a 2221 bus. In certain aspects, the computer-readable medium 2211 is configured to store instructions that, when executed by the processor 2209, cause processor 2209 to perform one or more of the operations illustrated in Figure 22, or other operations to perform the various techniques discussed in this document.
[0165] [0165] In certain respects, the processing system 2214 still includes a transmission component 2220 to perform one or more of the operations illustrated in 2202 and 2204 in Figure 22.
[0166] [0166] The 2220 transmission component can be coupled to the 2209 processor via the 2221 bus. In certain aspects, the 2220 transmission component can be hardware circuits. In certain respects, the transmission component 2220 can be software components that run and run on the 2209 processor.
[0167] [0167] The methods disclosed herein comprise one or more steps or actions to achieve the described method. The steps and / or actions of the method can be exchanged with each other without departing from the scope of the claims. In other words, unless a specific order of steps or actions is specified, the order and / or use of specific steps and / or actions can be modified without departing from the scope of the claims.
[0168] [0168] 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, a-cc, bb, bbb, bbc, cc and ccc or any other order of a, bec).
[0169] [0169] As used herein, the term “determine” covers a wide variety of actions. For example, "determine" may include calculating, computing, processing, deriving, investigating, searching (for example, searching a table, a 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.
[0170] [0170] The above description is provided to allow anyone skilled in the art to practice the various aspects described here. Several 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, the claims are not intended to be limited to the aspects presented here, but must be compatible with the full scope consistent with the language claims, in which reference to an element in the singular is not intended to mean “one and only one”, except specifically stated, but “one or more”. Unless specifically stated to the contrary, the term "some" refers to one or more. All structural and functional equivalents to the elements of the various aspects described throughout this report that are known or that will become known later on by those skilled in the art are expressly incorporated herein by reference and are to be considered covered by the claims. In addition, nothing disclosed in this document is dedicated to the public regardless of whether such disclosure is explicitly mentioned in the claims. No claim element shall be interpreted in accordance with 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”.
[0171] [0171] The various operations of the methods described above can be performed by any suitable means capable of carrying out the corresponding functions. The means may include various modules and / or hardware and / or software components, including, but not limited to, a circuit, an application specific integrated circuit (ASIC) or processor. In general, where there are operations illustrated in the figures, those operations may have components of means plus function of corresponding counterparts with similar numbers.
[0172] [0172] The various logic blocks, modules and illustrative circuits described in connection with the present disclosure can be implemented or executed with a general purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), an array of field programmable ports (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, alternatively, 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 in conjunction with a DSP core or any other configuration.
[0173] [0173] If implemented in hardware, an example of a hardware configuration may comprise a processing system on a wireless node. The processing system can be implemented with a bus architecture. The bus can include any number of interconnecting buses and bridges, depending on the specific application of the processing system and the general design restrictions. The bus can connect multiple circuits, including a processor, machine-readable media 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. The network adapter can be used to implement the PHY layer signal processing functions. In the case of user equipment 120 (see Figure 1), a user interface (for example, keyboard, monitor, 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 further. The processor can be implemented with one or more general purpose and / or special use processors. Examples include microprocessors, microcontrollers, DSP processors and other circuits that can run software. Those skilled in the art will recognize the best way to implement the functionality described for the processing system, depending on the specific application and the general design restrictions imposed on the general system.
[0174] [0174] If implemented in software, functions can be stored or transmitted as one or more instructions or code in a computer-readable medium. The software should be interpreted broadly as instructions, data or any combination thereof, whether referred to as software, firmware, middleware, microcode, hardware description language or otherwise.
[0175] [0175] A software module can comprise a single instruction, or many instructions, and can be distributed over several different code segments, between different programs and by various storage media. The computer-readable medium may 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 on a hard drive when a trigger event occurs. During the execution of the software module, the processor can load some of the instructions in the cache to increase the access speed. One or more lines of cache can be loaded into a general log file for execution by the processor. When referring to the functionality of a software module below, it is necessary that this functionality be implemented by the processor when executing instructions from that software module.
[0176] [0176] In addition, any connection is properly called a computer-readable medium. For example, if the software is broadcast on a website,
[0177] [0177] Thus, certain aspects may comprise a computer program product to perform the operations presented here. For example, such a computer program product may comprise a computer-readable medium having instructions stored in it (and / or encoded), the instructions being executable by one or more processors to perform the operations described in this document. For example, instructions for performing the operations described in this document and illustrated in Figures 11, 17 and 20.
[0178] [0178] In addition, it should be considered that the modules and / or other appropriate means to carry out the methods and techniques described here can be downloaded and / or obtained in another way by a user terminal and / or base station, as applicable. For example, this device can be coupled to a server to facilitate the transfer of means to carry out the methods described herein. Alternatively, various methods described herein can be provided through storage media (for example, RAM, ROM, a physical storage medium, such as a compact disc (CD) or floppy disk etc.), so that a user terminal and / or base station can obtain the various methods when coupling or providing the storage media to the device. In addition, any other suitable technique for providing the methods and techniques described herein to a device can be used.
[0179] [0179] It should be understood that the claims are not limited to the precise configuration and components illustrated above. Various modifications, alterations 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 (38)
[1]
1. A method for wireless communications by a user device (UE), comprising: receiving a Type 0 control feature set (CORESET) configuration of the Type0 physical downlink control channel (PDCCH) and a displacement of physical resource block (PRB) grid on a physical broadcasting channel (PBCH), the CORESET configuration of the common PDCCH Type0 search space comprising an indication of one or more displacement values corresponding to one or more displacements related to CORESET resource block frequency locations (PRBs) of Type0 common PDCCH search space relative to SSB PRB frequency locations; align an SSB PRB grid with a CORESET PRB grid of common PDCCH Type0 search space by applying the PRB grid offset; map the indication to one or more displacement values using a mapping stored by the UE; determine the frequency locations of the CORESET PRBs of the Type0 common PDCCH search space based on one or more offset values and the frequency locations of the SSB PRBs; and receive PDCCH Type0 in the common search space CORESET of PDCCH Type0.
[2]
2. Method according to claim 1, wherein the common search space CORESET of PDCCH Type0 and the SSB are multiplexed by time division.
[3]
3. Method according to claim 1, in which the common search space CORESET of PDCCH Type0 and the SSB are multiplexed by frequency division.
[4]
A method according to claim 1, wherein the indication indicative of one or more offset values is further indicative of a CORESET bandwidth of the common PDCCH Type0 search space.
[5]
5. Method according to claim 1, wherein each of the one or more offset values is based on at least one of an offset step size, a common search space CORESET bandwidth from PDCCH Type0, or a CORESET subcarrier spacing (SCS) of common Type0 PDCCH search space.
[6]
6. Method according to claim 5, wherein the offset step size depends on at least one of the CORESET bandwidth of PDCCH Type0 common search space, SSB subcarrier spacing or subcarrier spacing of the common search space CORESET of PDCCH Type0.
[7]
A method according to claim 1, wherein the mapping comprises a hash function.
[8]
8. Method according to claim 1, in which mapping the indication to one or more offset values using the mapping stored by the UE further comprises mapping the indication based on a CORESET subcarrier spacing of common PDCCH research space Like0.
[9]
A method according to claim 1, in which a displacement value of one or more displacement values indicates a displacement value of zero, and in which a displacement value of zero indicates that a minor
PRB of SSB PRBs has the same frequency as a lower PRB of the PRCCH Type0 common search space PRBs after alignment.
[10]
10. Apparatus, comprising: a non-transitory memory comprising executable instructions; and a processor in data communication with the memory and configured to execute the instructions to take the device to: receive a set of control resource set (CORESET) of common downlink control physical channel (PDCCH) search space Type0 and a physical resource block grid (PRB) offset in a physical broadcasting channel (PBCH), the CORESET configuration of the PDCCH Type0 common search space comprising an indication of one or more offset values corresponding to one or more more displacements related to CORESET resource block frequency locations (PRBs) from Type0 common PDCCH search space relative to SSB PRB frequency locations; align an SSB PRB grid with a CORESET PRB grid of common PDCCH Type0 search space by applying the PRB grid offset; map the indication to one or more displacement values using a mapping stored by the device; determine the frequency locations of the CORESET PRBs of the Type0 common PDCCH search space based on one or more offset values and the frequency locations of the SSB PRBs; and receive PDCCH Type0 in the common search space CORESET of PDCCH Type0.
[11]
Apparatus according to claim 10, wherein the common search space CORESET of PDCCH Type0 and the SSB are multiplexed by time division.
[12]
Apparatus according to claim 10, wherein the common search space CORESET of PDCCH Type0 and the SSB are multiplexed by frequency division.
[13]
Apparatus according to claim 10, wherein the indication indicative of one or more offset values is further indicative of a CORESET bandwidth of the common PDCCH Type0 search space.
[14]
Apparatus according to claim 10, wherein each of the one or more offset values is based on an offset step size, a common search space CORESET bandwidth of Type 0 PDCCH, and a CORESET subcarrier spacing (SCS) of PDCCH Type0 common search space.
[15]
Apparatus according to claim 14, wherein the offset step size depends on at least one of the CORESET bandwidth of PDCCH Type0 common search space, SSB subcarrier spacing or subcarrier spacing of the common search space CORESET of PDCCH Type0.
[16]
An apparatus according to claim 10, wherein the mapping comprises a hash function.
[17]
17. Apparatus, according to claim 10, in which mapping the indication to one or more displacement values using the mapping stored by the apparatus still comprises mapping the indication based on a CORESET subcarrier spacing of common PDCCH research space Like0.
[18]
Apparatus according to claim 10, in which a displacement value of one or more displacement values indicates a displacement value of zero, and in which a displacement value of zero indicates that a lower PRB of the SSB PRBs has the same frequency as a lower PRB of the CORESET PRBs of the common search space of PDCCH Type0 after alignment.
[19]
19. Apparatus, comprising: means for receiving a set of control resource set (CORESET) configuration of common downlink control physical channel (PDCCH) Type0 search and a physical resource block grid (PRB) offset in a physical broadcasting channel (PBCH), the CORESET configuration of the PDCCH Type0 common search space comprising an indication of one or more displacement values corresponding to one or more displacements related to resource block frequency locations (PRBs) Type 0 common PDCCH search space CORESET relative to SSB PRB frequency locations; means for aligning an SSB PRB grid with a CORESET PRB grid of common PDCCH Type0 search space by applying the PRB grid offset; means for mapping the indication to one or more displacement values using a mapping stored by the apparatus; means for determining the frequency locations of the CORESET PRBs of Type0 common PDCCH search space based on one or more offset values and the frequency locations of the SSB PRBs; and means for receiving PDCCH Type0 in the common search space CORESET of PDCCH Type0.
[20]
20. Apparatus according to claim 19, wherein the common search space CORESET of PDCCH Type0 and the SSB are multiplexed by time division.
[21]
21. Apparatus according to claim 19, wherein the common search space CORESET of PDCCH Type0 and the SSB are multiplexed by frequency division.
[22]
22. Apparatus according to claim 19, wherein the indication indicative of one or more offset values is further indicative of a CORESET bandwidth of common PDCCH Type0 search space.
[23]
23. Apparatus according to claim 19, wherein each of the one or more offset values is based on an offset step size, a common search space CORESET bandwidth of Type 0 PDCCH, and a CORESET subcarrier spacing (SCS) of PDCCH Type0 common search space.
[24]
24. Apparatus according to claim 23, wherein the offset step size depends on at least one within the CORESET bandwidth of PDCCH Type0 common search space, SSB subcarrier spacing or subcarrier spacing of the common search space CORESET of PDCCH Type0.
[25]
25. Non-transient computer-readable medium having instructions stored therein, which, when executed by user equipment (UE), lead the UE to perform a method comprising:
receive a Type0 control resource set (CORESET) configuration of Type0 downlink control physical channel (PDCCH) and a physical resource block grid (PRB) offset in a physical broadcasting channel (PBCH) , the PDCCH Type0 common search space CORESET configuration comprising an indication of one or more displacement values corresponding to one or more displacements related to common search space CORESET resource block locations (PRBs) of Type0 PDCCH relative to SSB PRB frequency locations; align an SSB PRB grid with a CORESET PRB grid of common PDCCH Type0 search space by applying the PRB grid offset; map the indication to one or more displacement values using a mapping stored by the UE; determine the frequency locations of the CORESET PRBs of the Type0 common PDCCH search space based on one or more offset values and the frequency locations of the SSB PRBs; and receive PDCCH Type0 in the common search space CORESET of PDCCH Type0.
[26]
26. Non-transitory computer-readable medium according to claim 25, in which the common search space CORESET of PDCCH Type0 and the SSB are multiplexed by time division.
[27]
27. Non-transitory computer-readable medium according to claim 25, in which the common search space CORESET of PDCCH Type0 and the SSB are multiplexed by frequency division.
[28]
28. Non-transitory computer-readable medium according to claim 25, wherein the indication indicating one or more offset values is further indicative of a common search space CORESET bandwidth of Type 0 PDCCH.
[29]
29. Non-transitory computer-readable medium according to claim 25, wherein each of the one or more offset values is based on a shift step size, a CORESET bandwidth of common search space of Type0 PDCCH, and a CORESET subcarrier spacing (SCS) of the Type0 common PDCCH search space.
[30]
30. Non-transitory computer-readable medium according to claim 29, wherein the offset step size depends on at least one of the bandwidth of the common search space of PDCCH Type0, SSB subcarrier spacing or the CORESET subcarrier spacing of PDCCH Type0 common search space.
[31]
31. Method for wireless communications by a user equipment (UE), comprising: determining frequency locations of Type0 control resource set (CORESET) of downlink control physical channel (PDCCH) Type0 on a channel shared physical downlink (PDSCH); determine CORESET frequency locations of Type0a physical downlink control common search space on the PDSCH based on the type0 PDCCH Type0 common search space CORESET frequency locations; and receive the common search space CORESET of PDCCH Type0a.
[32]
32. The method of claim 31, in which determining the CORESET frequency locations of the PDCCH Type0 common search space further comprises: receiving a common channel search space control feature set (CORESET) configuration Type0 physical downlink control (PDCCH) and a physical resource block grid (PRB) offset in a physical broadcasting channel (PBCH), the PDCCH Type0 common search space CORESET configuration comprising an indicative indication of a or more offset values corresponding to one or more offsets related to CORESET resource block frequency locations (PRBs) of the Type0 common PDCCH search space relative to SSB PRB frequency locations; align an SSB PRB grid with a CORESET PRB grid of common PDCCH Type0 search space by applying the PRB grid offset; map the indication to one or more displacement values using a mapping stored by the UE; and determining the frequency locations of the CORESET PRBs of Type0 common PDCCH search space based on one or more offset values and the frequency locations of the SSB PRBs.
[33]
33. Method for wireless communications by a base station (BS), comprising: transmitting a synchronization signal block (SSB) to user equipment, the SSB comprising a physical broadcasting channel (PBCH) having a set configuration Type0 downlink control (PDCCH) Type0 common search space control (CORESET) resources and a physical resource block (PRB) grid offset, the Type0 PDCCH Type0 common search space configuration an indicative indication of one or more offset values corresponding to one or more offsets related to CORESET Resource Block Frequency Locations (PRBs) from Type0 common PDCCH search space relative to SSB PRB frequency locations; transmitting a Type0 PDCCH in the CORESET of the Type0 PDCCH common search space for reception by the UE.
[34]
34. The method of claim 33, wherein the common search space CORESET of PDCCH Type0 and the SSB are multiplexed by time division.
[35]
35. The method of claim 33, wherein the PDCCH Type0 common research space CORESET and the SSB are multiplexed by frequency division.
[36]
36. The method of claim 33, wherein the indication indicative of one or more offset values is further indicative of a CORESET bandwidth of the common PDCCH Type0 search space.
[37]
37. The method of claim 33, wherein each of the one or more offset values is based on at least one of an offset step size, a common search space CORESET bandwidth of PDCCH Type0, or a CORESET subcarrier spacing (SCS) from the common PDCCH Type0 search space.
[38]
38. The method of claim 37, wherein the offset step size depends on at least one of the CORESET bandwidth of PDCCH Type0 common search space, SSB subcarrier spacing, or subcarrier spacing. of the common search space CORESET of PDCCH Type0.

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同族专利:

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公开号 | 公开日

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TW201924397A|2019-06-16|

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US20190159226A1|2019-05-23|

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KR20200087771A|2020-07-21|

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SG11202003416SA|2020-05-28|

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WO2019099174A1|2019-05-23|

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US10728916B2|2020-07-28|

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WO2019099173A1|2019-05-23|

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CN111344990A|2020-06-26|

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BR112020009529A2|2020-11-03|

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TW201924396A|2019-06-16|

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EP3711235A1|2020-09-23|

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JP2021503785A|2021-02-12|

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US11265893B2|2022-03-01|

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US20200229217A1|2020-07-16|

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CN111344992A|2020-06-26|

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SG11202003417TA|2020-05-28|

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US20190159180A1|2019-05-23|

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EP3711236A1|2020-09-23|

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US10993248B2|2021-04-27|

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JP2021503828A|2021-02-12|

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KR20200085282A|2020-07-14|

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法律状态:
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