User equipment, network node or method performed thereby

Abstract

The present disclosure relates to a 5G communication system or a 6G communication system for supporting higher data rates beyond a 4G communication system such as long term evolution (LTE). Embodiments of the present disclosure provide a method performed by a user equipment (UE) in a communication system, comprising: receiving a first synchronization signal block, wherein the first synchronization signal block includes a first part of a first physical downlink channel; or the first synchronization signal block includes the first part and a second part of the first physical downlink channel; wherein the first part of the first physical downlink channel includes first information for a first type of UE and a second type of UE, and the second part of the first physical downlink channel includes second information for the second type of UE; determining an uplink signal and / or an uplink resource; transmitting the uplink signal to a network node on the uplink resource; wherein in the case that the UE is the first type of UE, the uplink signal and / or uplink resource are determined based on the first information, or in the case that the UE is the second type of UE, the uplink signal and / or uplink resource are determined based on the first information and the second information.

Description

USER EQUIPMENT, NETWORK NODE OR METHOD PERFORMED THEREBY

[0001] The present application relates to the field of communications, and more particularly, to a method performed by a user equipment, a method performed by a network node, a user equipment or a network node.

[0002] Considering the development of wireless communication from generation to generation, the technologies have been developed mainly for services targeting humans, such as voice calls, multimedia services, and data services. Following the commercialization of 5G (5th-generation) communication systems, it is expected that the number of connected devices will exponentially grow. Increasingly, these will be connected to communication networks. Examples of connected things may include vehicles, robots, drones, home appliances, displays, smart sensors connected to various infrastructures, construction machines, and factory equipment. Mobile devices are expected to evolve in various form-factors, such as augmented reality glasses, virtual reality headsets, and hologram devices. In order to provide various services by connecting hundreds of billions of devices and things in the 6G (6th-generation) era, there have been ongoing efforts to develop improved 6G communication systems. For these reasons, 6G communication systems are referred to as beyond-5G systems.

[0003] 6G communication systems, which are expected to be commercialized around 2030, will have a peak data rate of tera (1,000 giga)-level bps and a radio latency less than 100μsec, and thus will be 50 times as fast as 5G communication systems and have the 1 / 10 radio latency thereof.

[0004] In order to accomplish such a high data rate and an ultra-low latency, it has been considered to implement 6G communication systems in a terahertz band (for example, 95GHz to 3THz bands). It is expected that, due to severer path loss and atmospheric absorption in the terahertz bands than those in mmWave bands introduced in 5G, technologies capable of securing the signal transmission distance (that is, coverage) will become more crucial. It is necessary to develop, as major technologies for securing the coverage, radio frequency (RF) elements, antennas, novel waveforms having a better coverage than orthogonal frequency division multiplexing (OFDM), beamforming and massive multiple input multiple output (MIMO), full dimensional MIMO (FD-MIMO), array antennas, and multiantenna transmission technologies such as large-scale antennas. In addition, there has been ongoing discussion on new technologies for improving the coverage of terahertz-band signals, such as metamaterial-based lenses and antennas, orbital angular momentum (OAM), and reconfigurable intelligent surface (RIS).

[0005] Moreover, in order to improve the spectral efficiency and the overall network performances, the following technologies have been developed for 6G communication systems: a full-duplex technology for enabling an uplink transmission and a downlink transmission to simultaneously use the same frequency resource at the same time; a network technology for utilizing satellites, high-altitude platform stations (HAPS), and the like in an integrated manner; an improved network structure for supporting mobile base stations and the like and enabling network operation optimization and automation and the like; a dynamic spectrum sharing technology via collison avoidance based on a prediction of spectrum usage; an use of artificial intelligence (AI) in wireless communication for improvement of overall network operation by utilizing AI from a designing phase for developing 6G and internalizing end-to-end AI support functions; and a next-generation distributed computing technology for overcoming the limit of UE computing ability through reachable super-high-performance communication and computing resources (such as mobile edge computing (MEC), clouds, and the like) over the network. In addition, through designing new protocols to be used in 6G communication systems, developing mecahnisms for implementing a hardware-based security environment and safe use of data, and developing technologies for maintaining privacy, attempts to strengthen the connectivity between devices, optimize the network, promote softwarization of network entities, and increase the openness of wireless communications are continuing.

[0006] It is expected that research and development of 6G communication systems in hyper-connectivity, including person to machine (P2M) as well as machine to machine (M2M), will allow the next hyper-connected experience. Particularly, it is expected that services such as truly immersive extended reality (XR), high-fidelity mobile hologram, and digital replica could be provided through 6G communication systems. In addition, services such as remote surgery for security and reliability enhancement, industrial automation, and emergency response will be provided through the 6G communication system such that the technologies could be applied in various fields such as industry, medical care, automobiles, and home appliances.

[0007] In order to meet the increasing demand for wireless data communication services since the deployment of 4G communication systems, efforts have been made to develop improved 5G or pre-5G communication systems. Therefore, 5G or pre-5G communication systems are also called "Beyond 4G networks" or "Post-LTE systems".

[0008] In order to achieve a higher data rate, 5G communication systems are implemented in higher frequency (millimeter, mmWave) bands, e.g., 60 GHz bands. In order to reduce propagation loss of radio waves and increase a transmission distance, technologies such as beamforming, massive multiple-input multiple-output (MIMO), full-dimensional MIMO (FD-MIMO), array antenna, analog beamforming and large-scale antenna are discussed in 5G communication systems.

[0009] In addition, in 5G communication systems, developments of system network improvement are underway based on advanced small cell, cloud radio access network (RAN), ultra-dense network, device-to-device (D2D) communication, wireless backhaul, mobile network, cooperative communication, coordinated multi-points (CoMP), reception-end interference cancellation, etc.

[0010] In 5G systems, hybrid FSK and QAM modulation (FQAM) and sliding window superposition coding (SWSC) as advanced coding modulation (ACM), and filter bank multicarrier (FBMC), non-orthogonal multiple access (NOMA) and sparse code multiple access (SCMA) as advanced access technologies have been developed.

[0011] The present disclosure relates to user equipment, network node or method performed thereby.

[0012] According to one aspect of the present disclosure, there is provided a method performed by user equipment (UE) in a communication system, comprising: receiving a first synchronization signal block, wherein the first synchronization signal block includes a first part of a first physical downlink channel; or the first synchronization signal block includes the first part and a second part of the first physical downlink channel; wherein the first part of the first physical downlink channel includes first information for a first type of UE and a second type of UE, and the second part of the first physical downlink channel includes second information for the second type of UE; determining an uplink signal and / or an uplink resource; transmitting the uplink signal to a network node on the uplink resource; wherein in the case that the UE is the first type of UE, the uplink signal and / or uplink resource are determined based on the first information, or in the case that the UE is the second type of UE, the uplink signal and / or uplink resource are determined based on the first information and the second information.

[0013] In combination with any of the above embodiments, according to the method performed by the user equipment (UE) in a communication system provided by the present disclosure, wherein the first part of the first physical downlink channel is mapped to a first frequency domain range, the second part of the first physical downlink channel is mapped to a second frequency domain range and / or a third frequency domain range, wherein a maximum frequency of the second frequency domain range is smaller than a minimum frequency of the first frequency domain range, and a minimum frequency of the third frequency domain range is larger than a maximum frequency of the first frequency domain range; or the first part of the first physical downlink channel is mapped to a first time domain range, and the second part of the first physical downlink channel is mapped to a second time domain range, wherein a maximum time of the first time domain range is less than a minimum time of the second time domain range; or the first part and the second part of the first physical downlink channel are mapped to a third time domain range, wherein a minimum time of the third time domain range is less than a maximum time of a fourth time domain range to which a physical broadcast channel (PBCH) is mapped, or a maximum time of the third time domain range is less than a minimum time of the fourth time domain range to which the physical broadcast channel (PBCH) is mapped.

[0014] In combination with any of the above embodiments, according to the method performed by the user equipment (UE) in a communication system provided by the present disclosure, wherein a first modulation symbol block is mapped to a resource element associated with the first part and the second part of the first physical downlink channel in a first mapping order; wherein the first mapping order includes at least one of: performing the mapping in an order of first in the first time domain range and the first frequency range, then in the second time domain range and the second frequency range, and finally in the second time domain range and the third frequency range, wherein the mapping to the resource element is in an increasing order of first the index and then the index ; or performing the mapping in an order of first in the first time domain range and the first frequency range, then in the second time domain range and the third frequency range, and finally in the second time domain range and the second frequency range, wherein the mapping to the resource element is in an increasing order of first the index and then the index ; wherein is a frequency index, is a time index, is an antenna port number, is a subcarrier spacing numerology; wherein the first modulation symbol block is obtained by modulating a transmission block transmitted by a higher layer to a physical layer.

[0015] In combination with any of the above embodiments, according to the method performed by the user equipment (UE) in a communication system provided by the present disclosure, wherein the first physical downlink channel includes a first physical broadcast channel (PBCH), wherein the first information includes first configuration information associated with a physical downlink control channel; and wherein the second information includes at least one of: second configuration information associated with the physical downlink control channel; information relating to a frequency of an uplink carrier; information related to a random access.

[0016] In combination with any of the above embodiments, according to the method performed by the user equipment (UE) in a communication system provided by the present disclosure, wherein the method further comprises: in the case that the UE is the first type of UE, the information related to the physical downlink control channel is determined based on the first configuration information; or, in the case that the UE is the second type of UE, the information related to the physical downlink control channel is determined based on the first configuration information and the second configuration information.

[0017] In combination with any of the above embodiments, according to the method performed by the user equipment (UE) in a communication system provided by the present disclosure, wherein the method further comprises: monitoring the physical downlink control channel (PDCCH) in a determined common search space, wherein the PDCCH is scrambled with a first radio network temporary identifier (RNTI) or a second RNTI, wherein the first RNTI corresponds to the first type of UE and the second RNTI corresponds to the second type of UE.

[0018] In combination with any of the above embodiments, according to the method performed by the user equipment (UE) in a communication system provided by the present disclosure, wherein the method further comprises: receiving a second physical downlink channel, wherein the second physical downlink channel includes a first part of a system information block, or includes the first part of the system information block and a second part of the system information block, wherein the first part of the system information block is used for the first type of UE and the second type of the UE, and the second part of the system information block is used for the second type of UE; wherein the second physical downlink channel includes a physical downlink shared channel (PDSCH).

[0019] In combination with any of the above embodiments, according to the method performed by the user equipment (UE) in a communication system provided by the present disclosure, wherein the method further comprises: receiving feedback information for the uplink signal from the network node based on a first random access radio network temporary identifier (RNTI) or a second random access RNTI, wherein the first random access RNTI or the second random access RNTI is determined based on the type of UE and the uplink resource.

[0020] In combination with any of the above embodiments, according to the method performed by the user equipment (UE) in a communication system provided by the present disclosure, wherein a first modulation symbol block mapped to a resource corresponding to the first part and the second part of the first physical downlink channel is obtained by performing a first processing on a first encoded data; or wherein a second modulation symbol block mapped to a resource corresponding to the first part of the first physical downlink channel is obtained by performing the first processing a second encoded data; or wherein a third modulation symbol block mapped to a resource corresponding to the second part of the first physical downlink channel is obtained by performing the first processing on a third encoded data or a fourth encoded data; wherein the first processing includes at least one of rate matching, scrambling, and modulation.

[0021] In combination with any of the above embodiments, according to the method performed by the user equipment (UE) in a communication system provided by the present disclosure, wherein the first encoded data is obtained by performing a channel encoding on a third block with a polar encoding; wherein the third block is obtained by concatenating a first block and a second block, the first block is obtained by appending a first cyclic redundancy check (CRC) to a first transport block and the second block is obtained by appending a second CRC to a second transport block, wherein data of the first transport block is included in the first part of the first physical downlink channel and data of the second transport block is included in the second part of the first physical downlink channel, the first transport block and the second transport block are data packets transmitted from a higher layer to a physical layer.

[0022] In combination with any of the above embodiments, according to the method performed by the user equipment (UE) in a communication system provided by the present disclosure, wherein the second encoded data is obtained by performing a channel encoding on a first block with a polar encoding, wherein the first block is obtained by appending a first cyclic redundancy check (CRC) to a first transport block; wherein the third encoded data is obtained by performing a channel encoding on a second transport block with a small block length encoding; wherein the fourth encoded data is obtained by performing a channel encoding on a second block with a polar encoding, wherein the second block is obtained by appending a second CRC to the second transport block; wherein data of the first transport block is included in the first part of the first physical downlink channel and data of the second transport block is included in the second part of the first physical downlink channel, the first transport block and the second transport block are data packets transmitted from a higher layer to a physical layer.

[0023] In combination with any of the above embodiments, according to the method performed by the user equipment (UE) in a communication system provided by the present disclosure, wherein a second modulation symbol block is mapped to a resource element associated with the first part of the first physical downlink channel in a second mapping order; a third modulation symbol block is mapped to a resource element associated with the second part of the first physical downlink channel in a third mapping order; wherein the second mapping order includes: the mapping to the resource element in the first frequency domain range and the first time domain range being in an increasing order of first the index and then the index ; wherein the third mapping order includes at least one of: performing the mapping in an order of first in the second time domain range and the second frequency range, and then in the second time domain range and the third frequency range, wherein the mapping to the resource element is in an increasing order of first the index and then the index ; or performing the mapping in an order of first in the second time domain range and the third frequency range, and then in the second time domain range and the second frequency range, wherein the mapping to the resource element is in an increasing order of first the index and then the index ; or the mapping to the resource element in the first frequency range and the second time domain range is in an increasing order of first the index and then the index; wherein is a frequency index, is a time index, is an antenna port number, is a subcarrier spacing numerology; wherein a maximum frequency of the second frequency domain range is smaller than a minimum frequency of the first frequency domain range, and a minimum frequency of the third frequency domain range is larger than a maximum frequency of the first frequency domain range; a maximum time of the first time domain range is less than a minimum time of the second time domain range.

[0024] In combination with any of the above embodiments, according to the method performed by the user equipment (UE) in a communication system provided by the present disclosure, wherein a type of the first CRC and the second CRC is associated with a first length and a type of the second CRC is associated with a second length.

[0025] According to an aspect of the disclosure, there is provided a method performed by a network node in a communication system, comprising: transmitting a first synchronization signal block, wherein the first synchronization signal block includes a first part and a second part of the first physical downlink channel; wherein the first part of the first physical downlink channel includes first information for a first type of UE and a second type of UE, and the second part of the first physical downlink channel includes second information for the second type of UE; receiving an uplink signal from the UE on an uplink resource, wherein in the case that the UE is the first type of UE, the uplink signal and / or uplink resource are determined based on the first information, or in the case that the UE is the second type of UE, the uplink signal and / or uplink resource are determined based on the first information and the second information; transmitting feedback information to the UE, wherein the feedback information is determined based on a type of UE, and wherein the type of UE is determined based on the uplink resource and / or the uplink signal.

[0026] In combination with any of the above embodiments, according to the method performed by the network node in a communication system provided by the present disclosure, wherein the first part of the first physical downlink channel is mapped to a first frequency domain range, the second part of the first physical downlink channel is mapped to a second frequency domain range and / or a third frequency domain range, wherein a maximum frequency of the second frequency domain range is smaller than a minimum frequency of the first frequency domain range, and a minimum frequency of the third frequency domain range is larger than a maximum frequency of the first frequency domain range; or the first part of the first physical downlink channel is mapped to a first time domain range, and the second part of the first physical downlink channel is mapped to a second time domain range, wherein a maximum time of the first time domain range is less than a minimum time of the second time domain range; or the first part and the second part of the first physical downlink channel are mapped to a third time domain range, wherein a minimum time of the third time domain range is less than a maximum time of a fourth time domain range to which a physical broadcast channel (PBCH) mapped, or a maximum time of the third time domain range is less than a minimum time of the fourth time domain range to which the physical broadcast channel (PBCH) mapped.

[0027] In combination with any of the above embodiments, according to the method performed by the network node in a communication system provided by the present disclosure, wherein a first modulation symbol block is mapped to a resource element associated with the first part and the second part of the first physical downlink channel in a first mapping order; wherein the first mapping order includes at least one of: performing the mapping in an order of first in the first time domain range and the first frequency range, then in the second time domain range and the second frequency range, and finally in the second time domain range and the third frequency range, the mapping to the resource element is in an increasing order of first the index and then the index ; or performing the mapping in an order of first in the first time domain range and the first frequency range, then in the second time domain range and the third frequency range, and finally in the second time domain range and the second frequency range, the mapping to the resource element is in an increasing order of first the index and then the index ; wherein is a frequency index, is a time index, is an antenna port number, is a subcarrier spacing numerology; wherein the first modulation symbol block is obtained by modulating a transmission block transmitted by a higher layer to a physical layer.

[0028] In combination with any of the above embodiments, according to the method performed by the network node in a communication system provided by the present disclosure, wherein the first physical downlink channel includes a first physical broadcast channel (PBCH), wherein the first information includes first configuration information associated with a physical downlink control channel; and wherein the second information includes at least one of: second configuration information associated with the physical downlink control channel; information relating to a frequency of an uplink carrier; information related to a random access.

[0029] In combination with any of the above embodiments, according to the method performed by the network node in a communication system provided by the present disclosure, in the case that the UE is the first type of UE, the information related to the physical downlink control channel is determined based on the first configuration information; or, in the case that the UE is the second type of UE, the information related to the physical downlink control channel is determined based on the first configuration information and the second configuration information.

[0030] In combination with any of the above embodiments, according to the method performed by the network node in a communication system provided by the present disclosure, wherein the method further comprises: transmitting a physical downlink control channel (PDCCH) to the UE, wherein the PDCCH is scrambled with a first radio network temporary identifier (RNTI) or a second RNTI, wherein the first RNTI corresponds to the first type of UE and the second RNTI corresponds to the second type of UE.

[0031] In combination with any of the above embodiments, according to the method performed by the network node in a communication system provided by the present disclosure, wherein the method further comprises: transmitting a second physical downlink channel to the UE, wherein the second physical downlink channel includes a first part of a system information block, or includes the first part of the system information block and a second part of the system information block, wherein the first part of the system information block is used for the first type of UE and the second type of the UE, and the second part of the system information block is used for the second type of UE; wherein the second physical downlink channel includes a physical downlink shared channel (PDSCH).

[0032] In combination with any of the above embodiments, according to the method performed by the network node in a communication system provided by the present disclosure, wherein the method further comprises: transmitting feedback information for the uplink signal from the network node based on a first random access radio network temporary identifier (RNTI) or a second random access RNTI, wherein the first random access RNTI or the second random access RNTI is determined based on the type of UE and the uplink resource.

[0033] In combination with any of the above embodiments, according to the method performed by the network node in a communication system provided by the present disclosure, wherein a first modulation symbol block mapped to a resource corresponding to the first part and the second part of the first physical downlink channel is obtained by performing a first processing on a first encoded data; or wherein a second modulation symbol block mapped to a resource corresponding to the first part of the first physical downlink channel is obtained by performing the first processing a second encoded data; or wherein a third modulation symbol block mapped to a resource corresponding to the second part of the first physical downlink channel is obtained by performing the first processing on a third encoded data or a fourth encoded data; wherein the first processing includes at least one of rate matching, scrambling, and modulation.

[0034] In combination with any of the above embodiments, according to the method performed by the network node in a communication system provided by the present disclosure, wherein the first encoded data is obtained by performing a channel encoding on a third block with a polar encoding; wherein the third block is obtained by concatenating a first block and a second block, the first block is obtained by appending a first cyclic redundancy check (CRC) to a first transport block and the second block is obtained by appending a second CRC to a second transport block, wherein data of the first transport block is included in the first part of the first physical downlink channel and data of the second transport block is included in the second part of the first physical downlink channel, the first transport block and the second transport block are data packets transmitted from a higher layer to a physical layer.

[0035] In combination with any of the above embodiments, according to the method performed by the network node in a communication system provided by the present disclosure, wherein the second encoded data is obtained by performing a channel encoding on a first block with a polar encoding, wherein the first block is obtained by appending a first cyclic redundancy check (CRC) to a first transport block; wherein the third encoded data is obtained by performing a channel encoding on a second transport block with a small block length encoding; wherein the fourth encoded data is obtained by performing a channel encoding on a second block with a polar encoding, wherein the second block is obtained by appending a second CRC to the second transport block; wherein data of the first transport block is included in the first part of the first physical downlink channel and data of the second transport block is included in the second part of the first physical downlink channel, the first transport block and the second transport block are data packets transmitted from a higher layer to a physical layer.

[0036] In combination with any of the above embodiments, according to the method performed by the network node in a communication system provided by the present disclosure, wherein a second modulation symbol block is mapped to a resource element associated with the first part of the first physical downlink channel in a second mapping order; a third modulation symbol block is mapped to a resource element associated with the second part of the first physical downlink channel in a third mapping order; wherein the second mapping order includes: the mapping to the resource element in the first frequency domain range and the first time domain range being in an increasing order of first the index and then the index ; wherein the third mapping order includes at least one of: performing the mapping in an order of first in the second time domain range and the second frequency range, and then in the second time domain range and the third frequency range, wherein the mapping to the resource element is in an increasing order of first the index and then the index ; or performing the mapping in an order of first in the second time domain range and the third frequency range, and then in the second time domain range and the second frequency range, wherein the mapping to the resource element is in an increasing order of first the index and then the index ; or the mapping to the resource element in the first frequency range and the second time domain range is in an increasing order of first the index and then the index; wherein is a frequency index, is a time index, is an antenna port number, is a subcarrier spacing numerology; wherein a maximum frequency of the second frequency domain range is smaller than a minimum frequency of the first frequency domain range, and a minimum frequency of the third frequency domain range is larger than a maximum frequency of the first frequency domain range; a maximum time of the first time domain range is less than a minimum time of the second time domain range.

[0037] In combination with any of the above embodiments, according to the method performed by the network node in a communication system provided by the present disclosure, wherein a type of the first CRC and the second CRC is associated with a first length and a type of the second CRC is associated with a second length.

[0038] According to another aspect of the present disclosure, there is provided a user equipment UE comprising: a transceiver configured to transmit and receive signals with the outside; and a controller configured to control the transceiver to perform the above method performed by the UE.

[0039] According to another aspect of the present disclosure, there is provided a network node comprising: a transceiver configured to transmit and receive signals with the outside; and a controller configured to control the transceiver to perform the above method performed by the network node.

[0040] According to another aspect of the present disclosure, there is provided a non-transitory computer-readable recording medium having stored thereon a program which, when being executed by a computer, performs any of the above methods.

[0041] The present disclosure relates to user equipment, network node or method performed thereby. According to the present disclosure, wireless communication systems can support higher data rates by utilizing millimeter-wave frequency bands and advanced antenna technologies such as beamforming and massive MIMO. Furthermore, network performance can be enhanced through techniques including ultra-dense networks, D2D communication, and CoMP, thereby improving connectivity and spectral efficiency. Additionally, advanced modulation and access technologies such as FQAM, SWSC, NOMA, and SCMA contribute to improved throughput and reliable data transmission in 5G environments.

[0042] Fig. 1 is a schematic diagram of the composition structure of various radio networks according to an embodiment of the present disclosure;

[0043] Figs. 2a and 2b are schematic diagrams of wireless transmission and reception paths according to embodiments of the present disclosure;

[0044] Fig. 3a is a block diagram of a constituent structure of user equipment according to an embodiment of the present disclosure;

[0045] Fig. 3b is a block diagram of the composition structure of a base station according to an embodiment of the present disclosure;

[0046] Fig. 3c illustrates a schematic diagram of a 4-step random access procedure according to some example embodiments of the present disclosure;

[0047] Figure 4 is a schematic diagram of a first kind of a structure of synchronization signal block (SSB) according to an embodiment of the present disclosure;

[0048] Figure 5 is a schematic diagram of a second kind of a structure of SSB according to an embodiment of the present disclosure;

[0049] Figure 6 is a schematic diagram of a third kind of a structure of SSB according to an embodiment of the present disclosure;

[0050] Figure 7 is a schematic diagram of a fourth kind of a structure of SSB according to an embodiment of the present disclosure;

[0051] Figure 8 is a schematic diagram of a fifth kind of a structure of SSB according to an embodiment of the present disclosure;

[0052] Figure 9 is a schematic diagram of a physical layer data encoding and resource mapping process according to an embodiment of the present disclosure;

[0053] Fig. 10 illustrates an exemplary structure of a user equipment UE according to the present disclosure;

[0054] Fig. 11 illustrates an exemplary structure of a network node according to the present disclosure.

[0055] In order to make the objectives, technical schemes and advantages of the embodiments of the present disclosure, a clearly and complete description will be made with respect to the technical schemes of the embodiments of the present disclosure, in conjunction with the accompanying drawings of the embodiments of the present disclosure. Apparently, the described embodiments are a part of the embodiments of the present disclosure, not all of the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by common skilled in the art without creative labor belong to the protection scope of the present disclosure.

[0056] Before undertaking the DETAILED DESCRIPTION below, it may be advantageous to set forth definitions of certain words and phrases used throughout this patent document. The term "couple" and its derivatives refer to any direct or indirect communication between two or more elements, whether those elements are in physical contact with one another. The terms "transmit," "receive," and "communicate," as well as derivatives thereof, encompass both direct and indirect communication. The terms "include" and "comprise," as well as derivatives thereof, mean inclusion without limitation. The term "or" is inclusive, meaning and / or. The phrase "associated with," as well as derivatives thereof, means to include, be included within, interconnect to or with, contain, be contained within, connect to or with, couple to or with, be communicable with, cooperate with, interleave, juxtapose, be proximate to, be bound to or with, have, have a property of, have a relationship to or with, or the like. The term "controller" means any device, system or part thereof that controls at least one operation. Such a controller may be implemented in hardware or a combination of hardware and software and / or firmware. The function associated with any particular controller may be centralized or distributed, whether locally or remotely. The phrase "at least one of," when used with a list of items, means that different combinations of one or more of the listed items may be used, and only one item in the list may be needed. For example, "at least one of the following: A, B, and C" includes any of the following combinations: A, B, C, A and B, A and C, B and C, and A and B and C. For example, "at least one of A, B, or C " includes any of the following combinations: A, B, C, A and B, A and C, B and C, and A and B and C.

[0057] In addition, various functions described below can be implemented or supported by one or more computer programs, each of which is formed by computer-readable program code and embodied in a computer-readable medium. The terms "application" and "program" refer to one or more computer programs, software components, instruction sets, procedures, functions, objects, classes, instances, related data or parts thereof appropriate for implementation in suitable computer-readable program code. The phrase "computer readable program code" includes any type of computer code, including source code, objective code and executable code. The phrase "computer readable medium" includes any type of medium that can be accessed by a computer, such as Read-Only Memory (ROM), Random Access Memory (RAM), hard disk drive, compact disk (CD), digital video disk (DVD) or any other type of memory. A "non-transitory" computer-readable medium excludes wired, wireless, optical or other communication links that transfer transitory electrical or other signals. A non-transitory computer-readable medium includes a medium in which data can be stored permanently and a medium in which data can be stored and rewritten later, such as rewritable optical disks or erasable memory devices.

[0058] The terms used herein to describe the embodiments of the present application is not intended to limit and / or define the scope of the present application. For example, unless otherwise defined, the technical or scientific terms used in the present disclosure should have common meanings as understood by common skilled in the art to which the present application belongs.

[0059] It should be understood that "first", "second" and similar words used in the present disclosure do not indicate any order, quantity or importance, but are only used to distinguish different components. Unless clearly indicated otherwise in the context, similar words such as "a", "an", "the" and the like in the singular form do not indicate a quantitative limitation, but indicate the existence of at least one.

[0060] As used herein, any reference to "one example" or "an example", "one embodiment" or "an embodiment" means that a particular element, feature, structure or characteristic described in conjunction with the embodiment is included in at least one embodiment. The appearances of the phrases "in one embodiment" or "in one example" in different places in the specification are not necessarily all referring to the same embodiment.

[0061] As used herein, "a part of" a certain thing means "at least some of" this thing, so it may mean being less than the entirety thereof or being the entirety thereof. Therefore, "a part of" the thing includes the whole thing as a special case, that is, an example in which the whole thing is a part of the thing.

[0062] It will be further understood that words such as "include", "contain" or the like means that the elements or objects appearing preceding the word encompass the elements or objects listed behind the word as well as their equivalents, without excluding other elements or objects. Words such as "connect", "interconnect" or the like are not limited to physical or mechanical connections, but may include electrical connection, whether direct or indirect. "Up", "Down", "Left" and "Right" are only used to indicate relative positional relationships. When the absolute position of the described object changes, accordingly, the relative positional relationship may change as well.

[0063] The various embodiments discussed below for describing the principle of the present disclosure in this patent document are for illustration only, and should not be construed as limiting the scope of the present disclosure in any way. Those skilled in the art will understand that the principle of the present disclosure may be implemented in any suitably arranged wireless communication system. For example, although the following detailed description of the embodiments of the present disclosure will focus on LTE and 5G communication systems, those skilled in the art can understand that the main points of the present disclosure can also be applied to other communication systems with similar technical backgrounds and channel formats, with slight modifications and basically without departing from the scope of the present disclosure. The schemes of the embodiments of the present application may be applied to various communication systems. For example, the communication systems may include a Global System for Mobile communications (GSM) system, a Code Division Multiple Access (CDMA) system, a Wideband Code Division Multiple Access (WCDMA) system, General Packet Radio Service (GPRS), Long Term Evolution (LTE) system, LTE Frequency Division Duplex (FDD) system, LTE Time Division Duplex (TDD), Universal Mobile Telecommunication System (UMTS), worldwide interoperability for microwave access (WiMAX) communication system, fifth generation (5th generation, 5G) system or New Radio (NR), etc. In addition, the schemes of the embodiments of the present application may be applied to future-oriented communication technologies. In addition, the schemes of the embodiments of the present application may be applied to future-oriented communication technologies.

[0064] The following description with reference to the accompanying drawings is provided to assist in a comprehensive understanding of various embodiments of the present disclosure as defined by the claims and their equivalents. The description includes various specific details to assist in that understanding but should be regarded as exemplary only. Accordingly, the common skilled in the art will recognize that various changes and modifications to the various embodiments described herein can be made without departing from the scope and spirit of the present disclosure. In addition, descriptions of well-known functions and structures may be omitted for clarity and conciseness.

[0065] The terms and wordings used in the following description and claims are not limited to the bibliographical meanings, but are merely used by the inventor to enable a clear and consistent understanding of the present disclosure. Accordingly, it should be apparent to those skilled in the art that the following description of various embodiments of the present disclosure is provided for illustration purpose only, but not for the purpose of limiting the present disclosure as defined by the appended claims and their equivalents.

[0066] It should be understood that the singular forms "a," "an," and "the" include plural referents, unless clearly indicated otherwise in the context. Thus, for example, reference to "a component surface" includes reference to one or more of such surfaces.

[0067] The term "include" or "may include" refers to the existence of a corresponding disclosed function, operation or component which can be used in various embodiments of the present disclosure, and does not limit the existence of one or more additional functions, operations, or components. The terms "include" and / or "have" may be construed to represent certain characteristics, numbers, steps, operations, constituent elements, components or combinations thereof, but may not be construed to exclude the possibility of existence of one or more other characteristics, numbers, steps, operations, constituent elements, components or combinations thereof.

[0068] The term "or" used in various embodiments of the present disclosure includes any of the listed terms or all combinations thereof. For example, "A or B" may include A, may include B, or may include both A and B.

[0069] Unless defined differently, all terms used in the present disclosure, including technical or scientific terms, have the same meanings as those understood by the skilled in the art as described in the present disclosure. Common terms as defined in a dictionary are to be interpreted to have meanings consistent with the context in the relevant technical field o, and are not to be interpreted ideally or excessively, unless clearly defined as such in the present disclosure.

[0070] The figures discussed below and various embodiments for describing the principle of the present disclosure in this patent document are only for illustration, and should not be interpreted as limiting the scope of the present disclosure in any way. Those skilled in the art will understand that the principle of the present disclosure may be implemented in any suitably arranged system or device.

[0071] FIG. 1 illustrates an example wireless network 100 according to various embodiments of the present disclosure. The embodiment of the wireless network 100 shown in FIG. 1 is for illustration only. Other embodiments of the wireless network 100 can be used without departing from the scope of the present disclosure.

[0072] The wireless network 100 includes a gNodeB (gNB) 101, a gNB 102, and a gNB 103. gNB 101 communicates with gNB 102 and gNB 103. gNB 101 also communicates with at least one Internet Protocol (IP) network 130, such as the Internet, a private IP network, or other data networks.

[0073] Depending on a type of the network, other well-known terms such as "base station" or "access point" can be used instead of "gNodeB" or "gNB". For convenience, the terms "gNodeB" and "gNB" are used in this patent document to refer to network infrastructure components that provide wireless access for remote terminals. And, depending on the type of the network, other well-known terms such as "mobile station", "user station", "remote terminal", "wireless terminal" or "user apparatus" can be used instead of "user equipment" or "UE". For convenience, the terms "user equipment" and "UE" are used in this patent document to refer to remote wireless devices that wirelessly access the gNB, no matter whether the UE is a mobile device (such as a mobile phone or a smart phone) or a fixed device (such as a desktop computer or a vending machine).

[0074] gNB 102 provides wireless broadband access to the network 130 for a first plurality of User Equipments (UEs) within a coverage area 120 of gNB 102. The first plurality of UEs include a UE 111, which may be located in a Small Business (SB); a UE 112, which may be located in an enterprise (E); a UE 113, which may be located in a WiFi Hotspot (HS); a UE 114, which may be located in a first residence (R); a UE 115, which may be located in a second residence (R); a UE 116, which may be a mobile device (M), such as a cellular phone, a wireless laptop computer, a wireless PDA, etc. GNB 103 provides wireless broadband access to network 130 for a second plurality of UEs within a coverage area 125 of gNB 103. The second plurality of UEs include a UE 115 and a UE 116. In some embodiments, one or more of gNBs 101-103 can communicate with each other and with UEs 111-116 using 5G, Long Term Evolution (LTE), LTE-A, WiMAX or other advanced wireless communication technologies.

[0075] The dashed lines show approximate ranges of the coverage areas 120 and 125, and the ranges are shown as approximate circles merely for illustration and explanation purposes. It should be clearly understood that the coverage areas associated with the gNBs, such as the coverage areas 120 and 125, may have other shapes, including irregular shapes, depending on configurations of the gNBs and changes in the radio environment associated with natural obstacles and man-made obstacles.

[0076] As will be described in more detail below, one or more of gNB 101, gNB 102, and gNB 103 include a 2D antenna array as described in embodiments of the present disclosure. In some embodiments, one or more of gNB 101, gNB 102, and gNB 103 support codebook designs and structures for systems with 2D antenna arrays.

[0077] Although FIG. 1 illustrates an example of the wireless network 100, various changes can be made to FIG. 1. The wireless network 100 can include any number of gNBs and any number of UEs in any suitable arrangement, for example. Furthermore, gNB 101 can directly communicate with any number of UEs and provide wireless broadband access to the network 130 for those UEs. Similarly, each gNB 102-103 can directly communicate with the network 130 and provide direct wireless broadband access to the network 130 for the UEs. In addition, gNB 101, 102 and / or 103 can provide access to other or additional external networks, such as external telephone networks or other types of data networks.

[0078] FIGs. 2a and 2b illustrate example wireless transmission and reception paths according to the present disclosure. In the following description, the transmission path 200 can be described as being implemented in a gNB, such as gNB 102, and the reception path 250 can be described as being implemented in a UE, such as UE 116. However, it should be understood that the reception path 250 can be implemented in a gNB and the transmission path 200 can be implemented in a UE. In some embodiments, the reception path 250 is configured to support codebook designs and structures for systems with 2D antenna arrays as described in embodiments of the present disclosure.

[0079] The transmission path 200 includes a channel coding and modulation block 205, a Serial-to-Parallel (S-to-P) block 210, a size N Inverse Fast Fourier Transform (IFFT) block 215, a Parallel-to-Serial (P-to-S) block 220, a cyclic prefix addition block 225, and an up-converter (UC) 230. The reception path 250 includes a down-converter (DC) 255, a cyclic prefix removal block 260, a Serial-to-Parallel (S-to-P) block 265, a size N Fast Fourier Transform (FFT) block 270, a Parallel-to-Serial (P-to-S) block 275, and a channel decoding and demodulation block 280.

[0080] In the transmission path 200, the channel coding and modulation block 205 receives a set of information bits, applies coding (such as Low Density Parity Check (LDPC) coding), and modulates the input bits (such as using Quadrature Phase Shift Keying (QPSK) or Quadrature Amplitude Modulation (QAM)) to generate a sequence of frequency-domain modulated symbols. The Serial-to-Parallel (S-to-P) block 210 converts (such as demultiplexes) serial modulated symbols into parallel data to generate N parallel symbol streams, where N is a size of the IFFT / FFT used in gNB 102 and UE 116. The size N IFFT block 215 performs IFFT operations on the N parallel symbol streams to generate a time domain output signal. The Parallel-to-Serial block 220 converts (such as multiplexes) parallel time domain output symbols from the Size N IFFT block 215 to generate a serial time domain signal. The cyclic prefix addition block 225 inserts a cyclic prefix into the time domain signal. The up-converter 230 modulates (such as up-converts) the output of the cyclic prefix addition block 225 to an RF frequency for transmission via a wireless channel. The signal can also be filtered at a baseband before switching to the RF frequency.

[0081] The RF signal transmitted from gNB 102 arrives at UE 116 after passing through the wireless channel, and operations in reverse to those at gNB 102 are performed at UE 116. The down-converter 255 down-converts the received signal to a baseband frequency, and the cyclic prefix removal block 260 removes the cyclic prefix to generate a serial time domain baseband signal. The Serial-to-Parallel block 265 converts the time domain baseband signal into a parallel time domain signal. The Size N FFT block 270 performs an FFT algorithm to generate N parallel frequency-domain signals. The Parallel-to-Serial block 275 converts the parallel frequency-domain signal into a sequence of modulated data symbols. The channel decoding and demodulation block 280 demodulates and decodes the modulated symbols to recover the original input data stream.

[0082] Each of gNBs 101-103 may implement a transmission path 200 similar to that for transmitting to UEs 111-116 in the downlink, and may implement a reception path 250 similar to that for receiving from UEs 111-116 in the uplink. Similarly, each of UEs 111-116 may implement a transmission path 200 for transmitting to gNBs 101-103 in the uplink, and may implement a reception path 250 for receiving from gNBs 101-103 in the downlink.

[0083] Each of the components in FIGs. 2a and 2b can be implemented using only hardware, or using a combination of hardware and software / firmware. As a specific example, at least some of the components in FIGs. 2a and 2b may be implemented in software, while other components may be implemented in configurable hardware or a combination of software and configurable hardware. For example, the FFT block 270 and IFFT block 215 may be implemented as configurable software algorithms, in which the value of the size N may be modified according to the implementation.

[0084] Furthermore, although described as using FFT and IFFT, this is only illustrative and should not be interpreted as limiting the scope of the present disclosure. Other types of transforms can be used, such as Discrete Fourier transform (DFT) and Inverse Discrete Fourier Transform (IDFT) functions. It should be understood that for DFT and IDFT functions, the value of variable N may be any integer (such as 1, 2, 3, 4, etc.), while for FFT and IFFT functions, the value of variable N may be any integer which is a power of 2 (such as 1, 2, 4, 8, 16, etc.).

[0085] Although FIGs. 2a and 2b illustrate examples of wireless transmission and reception paths, various changes may be made to FIGs. 2a and 2b. For example, various components in FIGs. 2a and 2b can be combined, further subdivided or omitted, and additional components can be added according to specific requirements. Furthermore, FIGs. 2a and 2b are intended to illustrate examples of types of transmission and reception paths that can be used in a wireless network. Any other suitable architecture can be used to support wireless communication in a wireless network.

[0086] FIG. 3a illustrates an example UE 116 according to the present disclosure. The embodiment of UE 116 shown in FIG. 3a is for illustration only, and UEs 111-115 of FIG. 1 can have the same or similar configuration. However, a UE has various configurations, and FIG. 3a does not limit the scope of the present disclosure to any specific implementation of the UE.

[0087] UE 116 includes an antenna 305, a radio frequency (RF) transceiver 310, a transmission (TX) processing circuit 315, a microphone 320, and a reception (RX) processing circuit 325. UE 116 also includes a speaker 330, a processor / controller 340, an input / output (I / O) interface 345, an input device(s) 350, a display 355, and a memory 360. The memory 360 includes an operating system (OS) 361 and one or more applications 362.

[0088] The RF transceiver 310 receives an incoming RF signal transmitted by a gNB of the wireless network 100 from the antenna 305. The RF transceiver 310 down-converts the incoming RF signal to generate an intermediate frequency (IF) or baseband signal. The IF or baseband signal is transmitted to the RX processing circuit 325, where the RX processing circuit 325 generates a processed baseband signal by filtering, decoding and / or digitizing the baseband or IF signal. The RX processing circuit 325 transmits the processed baseband signal to speaker 330 (such as for voice data) or to processor / controller 340 for further processing (such as for web browsing data).

[0089] The TX processing circuit 315 receives analog or digital voice data from microphone 320 or other outgoing baseband data (such as network data, email or interactive video game data) from processor / controller 340. The TX processing circuit 315 encodes, multiplexes, and / or digitizes the outgoing baseband data to generate a processed baseband or IF signal. The RF transceiver 310 receives the outgoing processed baseband or IF signal from the TX processing circuit 315 and up-converts the baseband or IF signal into an RF signal transmitted via the antenna 305.

[0090] The processor / controller 340 can include one or more processors or other processing devices and execute an OS 361 stored in the memory 360 in order to control the overall operation of UE 116. For example, the processor / controller 340 can control the reception of forward channel signals and the transmission of backward channel signals through the RF transceiver 310, the RX processing circuit 325 and the TX processing circuit 315 according to well-known principles. In some embodiments, the processor / controller 340 includes at least one microprocessor or microcontroller.

[0091] The processor / controller 340 is also capable of executing other processes and programs residing in the memory 360, such as operations for channel quality measurement and reporting for systems with 2D antenna arrays as described in embodiments of the present disclosure. The processor / controller 340 can move data into or out of the memory 360 as required by an execution process. In some embodiments, the processor / controller 340 is configured to execute the application 362 based on the OS 361 or in response to signals received from the gNB or the operator. The processor / controller 340 is also coupled to an I / O interface 345, where the I / O interface 345 provides UE 116 with the ability to connect to other devices such as laptop computers and handheld computers. I / O interface 345 is a communication path between these accessories and the processor / controller 340.

[0092] The processor / controller 340 is also coupled to the input device(s) 350 and the display 355. An operator of UE 116 can input data into UE 116 using the input device(s) 350. The display 355 may be a liquid crystal display or other display capable of presenting text and / or at least limited graphics (such as from a website). The memory 360 is coupled to the processor / controller 340. A part of the memory 360 can include a random access memory (RAM), while another part of the memory 360 can include a flash memory or other read-only memory (ROM).

[0093] Although FIG. 3a illustrates an example of UE 116, various changes can be made to FIG. 3a. For example, various components in FIG. 3a can be combined, further subdivided or omitted, and additional components can be added according to specific requirements. As a specific example, the processor / controller 340 can be divided into a plurality of processors, such as one or more central processing units (CPUs) and one or more graphics processing units (GPUs). Furthermore, although FIG. 3a illustrates that the UE 116 is configured as a mobile phone or a smart phone, UEs can be configured to operate as other types of mobile or fixed devices.

[0094] FIG. 3b illustrates an example gNB 102 according to the present disclosure. The embodiment of gNB 102 shown in FIG. 3b is for illustration only, and other gNBs of FIG. 1 can have the same or similar configuration. However, a gNB has various configurations, and FIG. 3b does not limit the scope of the present disclosure to any specific implementation of a gNB. It should be noted that gNB 101 and gNB 103 can include the same or similar structures as gNB 102.

[0095] As shown in FIG. 3b, gNB 102 includes a plurality of antennas 370a-370n, a plurality of RF transceivers 372a-372n, a transmission (TX) processing circuit 374, and a reception (RX) processing circuit 376. In certain embodiments, one or more of the plurality of antennas 370a-370n include a 2D antenna array. gNB 102 also includes a controller / processor 378, a memory 380, and a backhaul or network interface 382.

[0096] RF transceivers 372a-372n receive an incoming RF signal from antennas 370a-370n, such as a signal transmitted by UEs or other gNBs. RF transceivers 372a-372n down-convert the incoming RF signal to generate an IF or baseband signal. The IF or baseband signal is transmitted to the RX processing circuit 376, where the RX processing circuit 376 generates a processed baseband signal by filtering, decoding and / or digitizing the baseband or IF signal. RX processing circuit 376 transmits the processed baseband signal to controller / processor 378 for further processing.

[0097] The TX processing circuit 374 receives analog or digital data (such as voice data, network data, email or interactive video game data) from the controller / processor 378. TX processing circuit 374 encodes, multiplexes and / or digitizes outgoing baseband data to generate a processed baseband or IF signal. RF transceivers 372a-372n receive the outgoing processed baseband or IF signal from TX processing circuit 374 and up-convert the baseband or IF signal into an RF signal transmitted via antennas 370a-370n.

[0098] The controller / processor 378 can include one or more processors or other processing devices that control the overall operation of gNB 102. For example, the controller / processor 378 can control the reception of forward channel signals and the transmission of backward channel signals through the RF transceivers 372a-372n, the RX processing circuit 376 and the TX processing circuit 374 according to well-known principles. The controller / processor 378 can also support additional functions, such as higher-level wireless communication functions. For example, the controller / processor 378 can perform a Blind Interference Sensing (BIS) process such as that performed through a BIS algorithm, and decode a received signal from which an interference signal is subtracted. A controller / processor 378 may support any of a variety of other functions in gNB 102. In some embodiments, the controller / processor 378 includes at least one microprocessor or microcontroller.

[0099] The controller / processor 378 is also capable of executing programs and other processes residing in the memory 380, such as a basic OS. The controller / processor 378 can also support channel quality measurement and reporting for systems with 2D antenna arrays as described in embodiments of the present disclosure. In some embodiments, the controller / processor 378 supports communication between entities such as web RTCs. The controller / processor 378 can move data into or out of the memory 380 as required by an execution process.

[0100] The controller / processor 378 is also coupled to the backhaul or network interface 382. The backhaul or network interface 382 allows gNB 102 to communicate with other devices or systems through a backhaul connection or through a network. The backhaul or network interface 382 can support communication over any suitable wired or wireless connection(s). For example, when gNB 102 is implemented as a part of a cellular communication system, such as a cellular communication system supporting 5G or new radio access technology or NR, LTE or LTE-A, the backhaul or network interface 382 can allow gNB 102 to communicate with other gNBs through wired or wireless backhaul connections. When gNB 102 is implemented as an access point, the backhaul or network interface 382 can allow gNB 102 to communicate with a larger network, such as the Internet, through a wired or wireless local area network or through a wired or wireless connection. The backhaul or network interface 382 includes any suitable structure that supports communication through a wired or wireless connection, such as an Ethernet or an RF transceiver.

[0101] The memory 380 is coupled to the controller / processor 378. A part of the memory 380 can include an RAM, while another part of the memory 380 can include a flash memory or other ROMs. In certain embodiments, a plurality of instructions, such as the BIS algorithm, are stored in the memory. The plurality of instructions are configured to cause the controller / processor 378 to execute the BIS process and decode the received signal after subtracting at least one interference signal determined by the BIS algorithm.

[0102] As will be described in more detail below, the transmission and reception paths of gNB 102 (implemented using RF transceivers 372a-372n, TX processing circuit 374 and / or RX processing circuit 376) support aggregated communication with FDD cells and TDD cells.

[0103] Although FIG. 3b illustrates an example of gNB 102, various changes may be made to FIG. 3b. For example, gNB 102 can include any number of each component shown in FIG. 3a. As a specific example, the access point can include many backhaul or network interfaces 382, and the controller / processor 378 can support routing functions to route data between different network addresses. As another specific example, although shown as including a single instance of the TX processing circuit 374 and a single instance of the RX processing circuit 376, gNB 102 can include multiple instances of each (such as one for each RF transceiver).

[0104] The time domain unit (also called time unit) in this application can be: an OFDM symbol, an OFDM symbol group (composed of multiple OFDM symbols), a slot, a slot group (composed of multiple slots), a subframe, a subframe group (composed of multiple subframes), a system frame and a system frame group (composed of multiple system frames). It can also be an absolute time unit, such as 1 millisecond, 1 second, etc. A time unit can also be a combination of various granularities, such as N1 slots plus N2 OFDM symbols.

[0105] The frequency domain unit (also called frequency unit) in this application can be: a subcarrier, a subcarrier group (composed of multiple subcarriers), a resource block (RB), which can also be called a physical resource block (PRB), a resource block group (composed of multiple RBs), a bandwidth part (BWP), a bandwidth part group (composed of multiple BWPs), a bandwidth / carrier, and a bandwidth group / carrier group. It can also be an absolute frequency domain unit, such as 1 Hz, 1 kHz, etc. The frequency domain unit can also be a combination of multiple granularities, such as M1 PRBs plus M2 subcarriers.

[0106] Exemplary embodiments of the present disclosure are further described below with reference to the accompanying drawings.

[0107] Text and drawings are provided as examples only to help readers understand the present disclosure. They are not intended and should not be construed to limit the scope of the present disclosure in any way. Although certain embodiments and examples have been provided, based on the disclosure herein, it is obvious to those skilled in the art that changes can be made to the illustrated embodiments and examples without departing from the scope of this disclosure.

[0108] It can be understood by those skilled in the art that the singular forms "a", "an", "the" and "the" used herein can also include plural forms unless specifically stated. It should be further understood that the word "comprising" used in the specification of this application refers to the presence of said features, integers, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or groups thereof. It should be understood that when we say that an element is "connected" or "coupled" to another element, it can be directly connected or coupled to the other element, or intervening elements may also exist. Furthermore, "connected" or "coupled" as used herein may include wireless connection or wireless coupling. As used herein, the phrase "and / or" includes all or any unit and all combinations of one or more associated listed items.

[0109] It can be understood by those skilled in the art that unless otherwise defined, all terms (including technical terms and scientific terms) used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs. It should also be understood that terms, such as those defined in general dictionaries, should be understood to have meanings consistent with those in the context of the prior art, and will not be interpreted in an idealized or overly formal sense unless they are specifically defined as here.

[0110] It can be understood by those skilled in the technical field that the "terminal" and "terminal equipment" used here include both the equipment of wireless signal receiver, which only has the equipment of wireless signal receiver without transmission capability, and the equipment of receiving and transmitting hardware, which has the equipment of receiving and transmitting hardware capable of bidirectional communication on the bidirectional communication link. Such devices may include a cellular or other communication device having a single-line display or a multi-line display or a cellular or other communication device without a multi-line display. PC (Personal Communications Service), which can combine voice, data processing, fax and / or data communication capabilities. PDA(Personal Digital Assistant), which may include RF receiver, pager, Internet / Intranet access, web browser, notepad, calendar and / or GPS(Global Positioning System) receiver; a conventional laptop and / or palmtop computer or other device having and / or including a conventional laptop and / or palmtop computer or other device of a radio frequency receiver. As used herein, "terminal" and "terminal equipment" can be portable, transportable, installed in vehicles (air, sea and / or land), or suitable and / or configured to operate locally, and / or operate in any other location on the earth and / or space in a distributed form. The "terminal" and "terminal equipment" used here can also be communication terminals, internet terminals and music / video playing terminals, such as PDA, mobile internet device (Mobile Internet Device) and / or mobile phone with music / video playing function, as well as smart TV, set-top box and other devices.

[0111] Without departing from the scope of the present invention, the term "send" in the present invention can be used interchangeably with "transmission", "report" and "notification".

[0112] Text and drawings are provided as examples only to help readers understand the present disclosure. They are not intended and should not be construed to limit the scope of the present disclosure in any way. Although certain embodiments and examples have been provided, based on the disclosure herein, it is obvious to those skilled in the art that changes can be made to the illustrated embodiments and examples without departing from the scope of this disclosure.

[0113] The transmission link of wireless communication system mainly includes: a downlink communication link from 5G gNB to User Equipment, UE) and an uplink communication link from UE to network.

[0114] Nodes used for positioning measurement in wireless communication systems, such as current wireless communication systems, include: UE that initiates positioning request message; Location Management Function (LMF) that is used for UE positioning and transmitting positioning auxiliary data; gNB or transmission-reception point (TRP) that broadcasts positioning auxiliary data and performs uplink positioning measurement, and UE that is used for downlink positioning measurement. In addition, the method of the present invention can also be extended to other communication systems, such as automobile communication (V2X), for example, sidelink communication, in which the transmitting and receiving point or UE can be any device in V2X.

[0115] Transmission in a wireless communication system includes: a transmission from a base station (gNB) to User Equipment (UE) (called a downlink transmission), corresponding slots are called downlink slots; a transmission from UE to the base station (called an uplink transmission), and corresponding slots are called uplink slots.

[0116] In wireless communication systems, such as LTE or NR systems, 2-step or 4-step random access procedure is used to establish the link between the device and the base station. The base station periodically sends synchronization signals and broadcast channels to users through synchronization signal block (SSB, synchronization signal / PBCH block, or referred to as the first downlink reference signal). The period is called SSB periodicity, or SSB burst periodicity. At the same time, the base station will configure a physical random access channel configuration period (PRACH configuration period), during which a certain number of random access transmission occasions (also called random access occasions, RO) will be configured.

[0117] In the New Radio (NR) communication system, before the establishment of radio resource control, such as in random access procedure, the performance of random access directly affects the user's experience. In traditional wireless communication systems, such as LTE and LTE-Advanced, or in 5G or NR systems, the random access procedure is used in many scenarios, such as establishing an initial connection, the cell handover, reestablishing uplink connection, RRC connection reestablishment, etc., and is divided into Contention-based Random Access and Contention-free Random Access according to whether users monopolize the preamble resources. Fig. 3c illustrates a schematic diagram of a 4-step random access procedure according to some example embodiments of the present disclosure. For example, the Contention-based Random Access procedure is divided into four steps, as shown in Figure 3c. In the first step, UE randomly selects a preamble sequence from a preamble sequence (also interchangeably referred to as "preamble" herein) resource pool and sends it to the base station. The base station performs the correlation detection on the received signal, thus identifying the preamble sequence sent by the UE. In the second step, the base station sends a Random Access Response, RAR) to the UE. The RAR may include a random access preamble sequence identifier, a timing advance command determined according to the time delay estimation between the UE and the base station, a cell-radio network temporary identifier (C-RNTI), and / or time-frequency resources allocated for the next uplink transmission of the UE (time-frequency resources may refer to time domain resources and / or frequency-domain resources). The UE should search for the PDCCH carrying the feedback based on the RA-RNTI associated with the PRACH occasion on which the random access preamble sequence is transmitted. The RA-RNTI associated with the PRACH occasion (e.g., RO) on which the random access preamble sequence is transmitted may be based on the index of the first OFDM symbol of the PRACH occasion, the index of the first slot of the PRACH occasion in the system frame, the index of the PRACH occasion in the frequency domain, and the UL carrier used for random access preamble transmission. For example, RA-RNTI can be calculated according to the following formula:

[0118] RA-RNTI = 1 + s_id + 14 * t_id + 14 * 80 * f_id + 14 * 80 * 8 * ul_carrier_id,

[0119] Herein, s_id is the index of the first OFDM symbol of the PRACH occasion (0 ≤ s_id < 14), and t_id is the index of the first slot of the PRACH occasion in the system frame （0 ≤ t_id < 80), where μ = {0, 1, 2, 3} is used to determine the value of the subcarrier spacing of t_id based on μ. t_id is the index of 120 kHz slot containing PRACH occasion in the system frame (0 ≤ t_id < 80), f_id is the index of PRACH occasion in the frequency domain (0 ≤ f_id < 8), and ul_carrier_id is the UL carrier used for random access preamble transmission (0 for NUL carrier and 1 for SUL carrier).

[0120] In the third step, the user sends a third message (message 3, Msg3) to the base station according to the information in the RAR. Msg3 contains information such as user terminal identification and RRC link request, where the user terminal identification is unique to the user and is used for conflict resolution; in the fourth step, the base station sends a conflict resolution identification to the user, including the identification of the user terminal that won the conflict resolution. After detecting its own identification, the user upgrades the temporary C-RNTI to C-RNTI, sends an ACK signal to the base station to complete the random access procedure, and waits for the scheduling of the base station. Otherwise, the user will start a new random access procedure after a delay.

[0121] For the Contention-free Random Access procedure, because the base station knows the user identification, it can assign a preamble sequence to the user. Therefore, when the user sends the preamble sequence, the random selection of the sequence is not needed, but the allocated preamble sequence is used. After detecting the allocated preamble sequence, the base station will send the corresponding random access response, including information such as timing advance and uplink resource allocation. After receiving the random access response, the user thinks that the uplink synchronization has been completed and waits for the further scheduling of the base station. Therefore, the Contention-free Random Access only includes two steps: step 1 is to send a preamble sequence; step 2 is to the random access response.

[0122] For example, the random access procedure is suitable for the following scenarios:

[0123] 1. an initial access under RRC _ idle;

[0124] 2. re-establish the RRC connection;

[0125] 3. cell handover;

[0126] 4. in RRC connection state, the downlink data arrives and requests the random access procedure (when the uplink is asynchronous);

[0127] 5. in RRC connection state, the uplink data arrives and requests the random access procedure (when the uplink is asynchronous or no resources in PUCCH resources are allocated to the scheduling request);

[0128] 6. positioning.

[0129] In wireless communication systems, there are different types of user equipment (UE), for example, UEs that support different UE capabilities, and the random access performance of different types of UEs needs to be enhanced.

[0130] For example, in the 5G wireless communication system, for UEs with a limited bandwidth, when receiving downlink synchronization signals (such as SSB), they can only receive SSBs of a part of the bandwidth, resulting in a degradation in signal decoding performance and seriously affecting the random access of the UE. Therefore, how to ensure the random access performance of bandwidth-limited UEs is a problem that needs to be solved.

[0131] Of course, it can be understood that the above technical problems are only examples, and the technical problems that can be solved by the technical solutions in the present disclosure all fall within the scope of protection of the present disclosure.

[0132] Various embodiments of the present disclosure provides a method performed by user equipment (UE) in a communication system, comprising: receiving a first synchronization signal block, wherein the first synchronization signal block includes a first part of a first physical downlink channel; or the first synchronization signal block includes the first part and a second part of the first physical downlink channel; wherein the first part of the first physical downlink channel includes first information for a first type of UE and a second type of UE, and the second part of the first physical downlink channel includes second information for the second type of UE; determining an uplink signal and / or an uplink resource; transmitting the uplink signal to a network node on the uplink resource; wherein in the case that the UE is the first type of UE, the uplink signal and / or uplink resource are determined based on the first information, or in the case that the UE is the second type of UE, the uplink signal and / or uplink resource are determined based on the first information and the second information.

[0133] Various embodiments of the present disclosure provides a method performed by a network node in a communication system, comprising: transmitting a first synchronization signal block, wherein the first synchronization signal block includes a first part and a second part of the first physical downlink channel; wherein the first part of the first physical downlink channel includes first information for a first type of UE and a second type of UE, and the second part of the first physical downlink channel includes second information for the second type of UE; receiving an uplink signal from the UE on an uplink resource, wherein in the case that the UE is the first type of UE, the uplink signal and / or uplink resource are determined based on the first information, or in the case that the UE is the second type of UE, the uplink signal and / or uplink resource are determined based on the first information and the second information; transmitting feedback information to the UE, wherein the feedback information is determined based on a type of UE, and wherein the type of UE is determined based on the uplink resource and / or the uplink signal.

[0134] In the above method of the present disclosure, by dividing the first physical downlink channel into the first part and the second part of the first physical downlink channel, for the first type of UE (for example, the bandwidth size supported by the UE is limited), only the first part of the first physical downlink channel can be received, and for the second type of UE (for example, the UE supports a larger bandwidth size), the first part and the second part of the first physical downlink channel are received, thereby ensuring the random access performance of different types of UEs.

[0135] The content of the present disclosure will be described in detail below with reference to the embodiments. It is understood that the various embodiments of the present invention can be combined with each other to form new embodiments.

[0136] The present invention provides a new synchronization signal block structure, which takes into account the maximum bandwidth supported by different UE types, improves the performance of UE decoding downlink channels or signals, and reduces the delay of UE random access.

[0137] The new synchronization signal block (which may also be called a synchronization signal and a physical broadcast channel block, referred to as a first synchronization signal block for short) includes a synchronization signal and a physical broadcast channel, and the physical broadcast channel (which may also be called a first physical downlink channel) includes a first part and a second part, wherein the first part can be used for all types of UEs to receive broadcast messages, and the second part can be used for the second type of UEs to receive broadcast messages.

[0138] It should be noted that the two-part structured design method or principle of the physical broadcast channel disclosed in the present invention can also be applied to other downlink channels, such as the physical downlink shared channel (PDSCH), the physical downlink control channel (PDCCH), etc. In addition, the method or principle disclosed in the present invention can also be applied to downlink reference signals, such as PSS (Primary Synchronization Signal), SSS (Secondary Synchronization Signal), CSI-RS (Channel State Information Reference Signal), PRS (Positioning Reference Signal), etc. The benefit of this is that it can support signals or channel designs of UE types with different bandwidth sizes, improve resource utilization, and reduce the signaling overhead of separately configuring different channels or signals for different types of UEs.

[0139] In the present invention, the first synchronization signal block is described using SSB as an example, but this is only exemplary, and the SSB can also be replaced by other downlink channels or signals. In addition, unless otherwise stated, the SSB involved in the present invention is a new SSB proposed by the present invention, and has a new SSB structure.

[0140] UEs can be of different types (UE types), where the parameters used to distinguish the UE types include at least one of the following: the frequency band supported by the UE, a maximum channel bandwidth, a maximum transmission power, a maximum uplink or downlink data transmission rate, a maximum number of layers, a number of radio frequency links, etc. The present invention takes two UE types, such as UE type 1 and UE type 2 as examples, but this is only exemplary, and the UE types may be more than 2. As an example, the above-mentioned parameters used to distinguish the UE types supported by UE type 1 may be smaller than the above-mentioned parameters used to distinguish the UE types supported by UE type 2. For example, the maximum channel bandwidth supported by UE type 1 is smaller than the maximum channel bandwidth supported by UE type 2. As another example, the above-mentioned parameters used to distinguish the UE types supported by UE type 1 may also be greater than the above-mentioned parameters used to distinguish the UE types supported by UE type 2.

[0141] In the embodiment of the present invention, unless otherwise specified, the configuration information includes at least one of information configured by the base station, information indicated in received signaling, information configured by the high-layer, and pre-configuration information. Further, it can be a set of configuration information obtained through the above method. It can also be multiple sets of configuration information obtained through the above method, and the UE or node can select a set of configuration information to use according to a predefined condition. It can also be a set of configuration information obtained through the above method, and the set of configuration information includes multiple subsets, and the UE or node can select a subset to use according to a predefined condition.

[0142] One or more of the following steps may be included in the methods of various embodiments of the present disclosure:

[0143] > The UE receives a first physical downlink signal, where the first physical downlink signal or channel is sent by a network device (such as a base station or a bypass device, etc.). The following description takes the first physical downlink signal as an SSB as an example. Unless stated separately, the SSB described in this disclosure is a new SSB that is different from the prior art. The SSB may include at least one of the following channels and / or signals: primary synchronization signal PSS, secondary synchronization signal SSS, physical broadcast channel PBCH;

[0144] >> Optionally, based on the reception occasions of PSS and / or SSS, the time domain location of PBCH may be determined. For example, the UE may assume that the reception occasions of PSS and / or SSS and PBCH are in consecutive symbols;

[0145] >> Optionally, the PBCH includes two parts: a first broadcast physical channel (First PBCH, FPBCH) (for example, the first part of the PBCH) and a second broadcast physical channel (Second PBCH, SPBCH) (for example, the second part of the PBCH), where the specific content includes at least one of the following:

[0146] >>> Optionally, the symbols constituting the FPBCH may be mapped to the first frequency domain range; the symbols constituting the SPBCH may be mapped to a second frequency domain range and / or a third frequency domain range, wherein the maximum frequency (index) of the second frequency domain range may be smaller than the minimum frequency (index) of the first frequency domain range, and, the minimum frequency (index) of the third frequency domain range may be greater than the maximum frequency (index) of the first frequency domain range, (for example, the first frequency range is an intermediate frequency range and may be supported by a first type of UE (e.g. a bandwidth-limited UE) and can be used to transmit information necessary for random access);

[0147] >>> Optionally, the symbols constituting the FPBCH can be mapped to the first time domain range; the symbols constituting the SPBCH may be mapped to a second time domain range, wherein the maximum time (index) of the first time domain range is smaller than the minimum time (index) of the second time domain range (e.g., the first time domain range is earlier than the second time domain range, information necessary for random access of a first type of UE may be preferentially transmitted within a first time domain range).

[0148] >>> In the above manner, for the first type of UE (for example, a bandwidth-limited UE), the information necessary for random access for the first type of UE (such as system broadcast information of the cell) can be received in the middle frequency range and / or the earlier first time domain range, such as the system broadcast information of the cell, thereby ensuring the random access performance of the first type of UE.

[0149] >>> Optionally, the symbols constituting the PBCH (may also be referred to as a first modulation symbol block) map to resource element starting from in a first mapping order, wherein is the number of symbols constituting PBCH, and represent a frequency index and time index within one SSB, respectively, is an antenna port number, for example p = 4000; is the subcarrier spacing numerology, e.g. ={0,1,2,3...};

[0150] >>>> Optionally, the symbols may be modulated complex-valued symbols, or complex-valued symbol blocks;

[0151] >>>> Optionally, the UE shall assume that the symbol sequence of the physical broadcast channel is multiplied by a factor , wherein is used to satisfy the PBCH power allocation;

[0152] >>>> Optionally, the resource elements mapped with the symbols of PBCH are not used for the demodulation reference signal DM-RS of PBCH;

[0153] >>>> The first mapping order may be at least one of:

[0154] >>>>> the mapping to the resource element is in an increasing order of first the index and then the index . As one example, the index and are given by Tables 1, 2, 3, 4, 5.

[0155] Take Table 1 as an example to illustrate. At this time, the value range of the time index is [1, 2, 3], and the value range of frequency index k is [0, 1,..., 47, 48, 49,..., 191, 192, 193,..., 239], wherein the mapping to the resource element is in an increasing order of first the index and then the index . For example, according to the mapping order, it is mapped to resource elements

[0156] >>>>> performing the mapping in an order of first in the first time domain range and the first frequency range, then in the second time domain range and the second frequency range, and finally in the second time domain range and the third frequency range, wherein the mapping to the resource element is in an increasing order of first the index and then the index .

[0157] Taking Table 1 as an example to illustrate, the first time domain range is [1, 3], the second time domain range is [1, 2, 3], the first frequency range is [48, 49,..., 191], the second frequency range is [0, 1,..., 47], and the third frequency range is [192, 193,..., 239]. During the mapping, (1) first find the first time domain range [1, 3] and the first frequency range [48, 49,..., 191], within this range, the mapping to the resource element is in an increasing order of first the index and then the index , for example, according to the mapping order, it is mapped to resource elements (2) then perform the map in the second time domain range [1, 2, 3] and the second frequency range [0, 1,..., 47], within this range, the mapping to the resource element is in an increasing order of first the index and then the index , for example, according to the mapping order, it is mapped to resource elements (3) finally perform the map in the second time domain range [1, 2, 3] and the third frequency range [192, 193,..., 239], within this range, the mapping to the resource element is in an increasing order of first the index and then the index , for example, according to the mapping order, it is mapped to resource elements

[0158] >>>>> performing the mapping in an order of first in the first time domain range and the first frequency range, then in the second time domain range and the third frequency range, and finally in the second time domain range and the second frequency range, wherein the mapping to the resource element is in an increasing order of first the index and then the index .

[0159] Taking Table 1 as an example to illustrate, the first time domain range is [1, 3], the second time domain range is [1, 2, 3], the first frequency range is [48, 49,..., 191], the second frequency range is [0, 1,..., 47], and the third frequency range is [192, 193,..., 239]. During the mapping, (1) first find the first time domain range [1, 3] and the first frequency range [48, 49,..., 191], within this range, the mapping to the resource element is in an increasing order of first the index and then the index , for example, according to the mapping order, it is mapped to resource elements sequence (2) then perform the map in the second time domain range [1, 2, 3] and the third frequency range is [192, 193,..., 239], within this range, the mapping to the resource element is in an increasing order of first the index and then the index , for example, according to the mapping order, it is mapped to resource elements (3) finally perform the map in the second time domain range [1, 2, 3] and the second frequency range is [0, 1,..., 47], within this range, the mapping to the resource element is in an increasing order of first the index and then the index , for example, according to the mapping order, it is mapped to resource elements

[0160] >>> Optionally, the symbols constituting the FPBCH (may also be referred to as a second modulation symbol block) map to resource element starting from in a second mapping order wherein is the number of symbols constituting FPBCH, and represent a frequency index and time index within one SSB, respectively, is an antenna port number, for example p = 4000; is the subcarrier spacing numerology, e.g. ={0,1,2,3...}. As one example, the index and are given in Tables 1, 2, 3, 4, 5;

[0161] >>>> The second mapping order may be at least one of:

[0162] >>>>> the mapping to the resource element in the first frequency range and the first time domain range is in an increasing order of first the index and then the index

[0163] >>> Optionally, the symbols constituting the SPBCH (may also be referred to as a third block of modulation symbols) map to resource element starting from in a third mapping order, wherein is the number of symbols constituting FPBCH, and represent a frequency index and time index within one SSB, respectively, is an antenna port number, for example p = 4000; is the subcarrier spacing numerology, e.g. ={0,1,2,3...}. As one example, the index and are given in Tables 1, 2, 3, 4, 5;

[0164] >>>> The third mapping order may be at least one of:

[0165] >>>>> performing the mapping in an order of first in the second time domain range and the second frequency range, and then in the second time domain range and the third frequency range, wherein the mapping to the resource element is in an increasing order of first the index and then the index .

[0166] >>>>> performing the mapping in an order of first in the second time domain range and the third frequency range, and then in the second time domain range and the second frequency range, wherein the mapping to the resource element is in an increasing order of first the index and then the index .

[0167] >>>>> the mapping to the resource element in the first frequency range and the second time domain range is in an increasing order of first the index and then the index .

[0168] >>> Optionally, the symbols constituting SPBCH and / or FPBCH may be modulated complex-valued symbols, or complex-valued symbol blocks;

[0169] >>> Optionally, the resource elements of the symbols mapped with FPBCH and / or SPBCH are not used for the demodulation reference signal DM-RS of the FPBCH and / or SPBCH;

[0170] >> The specific structure of the SSB may include one or more of the following combinations:

[0171] >>> The SSB of the first structure of the channel (referred to as the first SSB), as shown in Figure 4,

[0172] >>>> The following is a description of the first SSB. In the time domain, the first SSB consists of 4 time units, where the PSS is located on the first time unit and the SSS is located on the third time unit, wherein the PBCH contains two parts: FPBCH and SPBCH, the FPBCH is located on the second and fourth time units, and the SPBCH is located on the second, third and fourth time units, as shown in Figure 4. The four time units within the first SSB are numbered in an increasing order of from 0 to 3. In the frequency domain, the first SSB consists of N consecutive frequency domain units, for example N = 240, numbered in an increasing order of from 0 to N-1 within the first SSB. The and represent the frequency index and time index within one first SSB, respectively.

[0173] >>>> As one example, PSS, SSS, FPBCH, SPBCH and associated DM-RS are mapped to resource elements according to Table 1, wherein is an antenna port number, for example p = 4000; is the subcarrier spacing numerology, e.g. ={0,1,2,3...}, the UE can assume that the complex symbol corresponding to the signal labeled 'Set To Zero' in Table 1 is set to zero. The in Table 1 is given by , wherein is the physical cell identity (PCI), G is a positive integer, for example, G = 4. The benefit to configure the is that mutual interference of reference signals between cells can be prevented.

[0174] Table 1: Resource allocation of PSS, SSS, FPBCH, SPBCH and associated DM-RS within the first SSB.

[0175]

[0176] It can be understood that in the above table, the time unit number of each signal or channel in the first SSB structure relative to the start of the first SSB and the frequency domain unit index relative to the starting frequency domain unit of the first SSB are only exemplary, and the present invention does not impose any restrictions on this, as long asfrequency domain unit index relative to the starting frequency domain unit of first SSB, the frequency domain unit index of the starting frequency domain unit of the FPBCH is less than or equal to the frequency domain unit index of the starting frequency domain unit of the PSS and / or SSS, and / or the frequency domain unit index of the ending frequency domain unit of the FPBCH is greater than or equal to the frequency domain unit index of the ending frequency domain unit of the PSS and / or SSS; the number of frequency domain units occupied by the FPBCH is smaller than the number of frequency domain units occupied by the first SSB, wherein the number of frequency domain units occupied by the FPBCH may depend on the bandwidth size supported by the first type of UE. For example, the larger the bandwidth size supported by the first type of UE, the smaller the number of frequency domain units occupied by the FPBCH. On the contrary, the smaller the bandwidth size supported by the first type of UE, the larger the number of frequency domain units occupied by the FPBCH. The beneficial effect is to ensure that the first type UE can receive the FPBCH to obtain important random access-related information. The frequency domain unit index of the frequency domain unit occupied by SPBCH and the frequency domain unit index of the frequency domain unit occupied by FPBCH do not overlap. For example, the symbols of SPBCH will not be mapped to the resources where the FPBCH is located; the frequency domain unit (index) of the DMRS within the FPBCH is included in the frequency domain unit (index) occupied by the FBPCH, and the DMRS inter-symbol spacing may be 4 frequency domain units; the frequency domain unit (index) of the DMRS within the SPBCH is included in the frequency domain unit (index) occupied by the SBPCH, and the DMRS inter-symbol interval may be 4 frequency domain units;

[0177] >>>> Optionally, in the frequency domain, there is a certain number P1 of frequency domain intervals between SSS and SPBCH, which is used as a guard band to prevent subcarrier interference between SSS and SPBCH;

[0178] >>>> Optionally, in the frequency domain, there is a certain number P2 of frequency domain intervals between FPBCH and SPBCH, which is used as a guard band to prevent subcarrier interference between FPBCH and SPBCH.

[0179] >>> The second structure of SSB (referred to as the second SSB): As shown in Figure 5.

[0180] >>>> The following is a description of the second SSB. In the time domain, the second SSB consists of 4 time units, where the PSS is located on the first time unit, and the PBCH contains two parts: FPBCH and SPBCH, and the FPBCH is located on the second, third and fourth time units, and SPBCH is located on the second, third and fourth time units, as shown in Figure 5. The four time units within the second SSB are numbered in an increasing order of from 0 to 3. In the frequency domain, the second SSB consists of N consecutive frequency domain units, for example N = 240, numbered in an increasing order of from 0 to N-1 within the second SSB. The and represent the frequency index and time index within one second SSB, respectively.

[0181] >>>> As one example, PSS, SSS, FPBCH, SPBCH and associated DM-RS are mapped to resource elements according to Table 2, wherein is an antenna port number, for example p = 4000; is the subcarrier spacing numerology, e.g. ={0,1,2,3...}, the UE can assume that the complex symbol corresponding to the signal labeled 'Set To Zero' in Table 2 is set to zero. The in Table 2 is given by , wherein is the physical cell identity (PCI), G is a positive integer, for example, G = 4. The benefit to configure the is that mutual interference of reference signals between cells can be prevented.

[0182] Table 2: Resource allocation of PSS, SSS, FPBCH, SPBCH and associated DM-RS within the second SSB.

[0183]

[0184] It can be understood that in the above table, the time unit number of each signal or channel in the second SSB structure relative to the start of the second SSB and the frequency domain unit index relative to the starting frequency domain unit of the second SSB are only exemplary, and the present invention does not impose any restrictions on this, as long asfrequency domain unit index relative to the starting frequency domain unit of second SSB, the frequency domain unit index of the starting frequency domain unit of the FPBCH is less than or equal to the frequency domain unit index of the starting frequency domain unit of the PSS and / or SSS, and / or the frequency domain unit index of the ending frequency domain unit of the FPBCH is greater than or equal to the frequency domain unit index of the ending frequency domain unit of the PSS and / or SSS; the number of frequency domain units occupied by the FPBCH is smaller than the number of frequency domain units occupied by the second SSB, wherein the number of frequency domain units occupied by the FPBCH may depend on the bandwidth size supported by the first type of UE. For example, the larger the bandwidth size supported by the first type of UE, the smaller the number of frequency domain units occupied by the FPBCH. On the contrary, the smaller the bandwidth size supported by the first type of UE, the larger the number of frequency domain units occupied by the FPBCH. The beneficial effect is to ensure that the first type UE can receive the FPBCH to obtain important random access-related information. The frequency domain unit index of the frequency domain unit occupied by SPBCH and the frequency domain unit index of the frequency domain unit occupied by FPBCH do not overlap. For example, the symbols of SPBCH will not be mapped to the resources where the FPBCH is located; the frequency domain unit (index) of the DMRS within the FPBCH is included in the frequency domain unit (index) occupied by the FBPCH, and the DMRS inter-symbol spacing may be 4 frequency domain units; the frequency domain unit (index) of the DMRS within the SPBCH is included in the frequency domain unit (index) occupied by the SBPCH, and the DMRS inter-symbol interval may be 4 frequency domain units.

[0185] >>>> Optionally, in the frequency domain, there is a certain number P2 of frequency domain intervals between FPBCH and SPBCH, which is used as a guard band to prevent subcarrier interference between FPBCH and SPBCH.

[0186] >>> The third structure of SSB (referred to as the third SSB): as shown in Figure 6,

[0187] >>>> The following is the relevant description for the third SSB. In the time domain, the third SSB consists of 6 time units, where the first 4 time units are legacy SSB signals, such as SSB for NR (new radio), containing PSS, SSS and legacy PBCH (such as PBCH for NR), and the last two time units are new PBCH (such as PBCH for non-NR), and the new PBCH contains two parts: FPBCH and SPBCH, the FPBCH is located on the fifth and sixth time units, and the SPBCH is located on the fifth and sixth time units, as shown in Figure 6. The six time units within the third SSB are numbered in an increasing order of from 0 to 5. In the frequency domain, the third SSB consists of N consecutive frequency domain units, for example N = 240, numbered in an increasing order of from 0 to N-1 within the third SSB. The and represent the frequency index and time index within one third SSB, respectively.

[0188] >>>> As one example, PSS, SSS, legacy PBCH, FPBCH, SPBCH and associated DM-RS are mapped to resource elements according to TABLE 3, wherein is an antenna port number, for example p = 4000; is the subcarrier spacing numerology, e.g. ={0,1,2,3...}, the UE can assume that the complex symbol corresponding to the signal labeled 'Set To Zero' in Table 3 is set to zero. The in Table 3 is given by , wherein is the physical cell identity (PCI), G is a positive integer, for example, G = 4. The benefit to configure the is that mutual interference of reference signals between cells can be prevented.

[0189] Table 3: Resource allocation of PSS, SSS, legacy PBCH, FPBCH, SPBCH and associated DM-RS within third SSB

[0190]

[0191] It can be understood that in the above table, the time unit number of each signal or channel in the third SSB structure relative to the start of the third SSB and the frequency domain unit index relative to the starting frequency domain unit of the third SSB are only exemplary. This invention does not impose any restrictions on this. As long as the starting time unit index of the new PBCH is greater than the ending time unit index of the legacy SSB (the index of the last time unit occupied by the legacy SSB), the beneficial effect is that the UE can obtain the system information of the cell supporting non-NR by receiving the new PBCH, without redesigning a new synchronization signal for the new PBCH, and perform cell search and / or downlink synchronization by reusing the PSS and / or SSS of the legacy SSB, thus reducing the resource overhead of the synchronization signal. In addition, frequency domain unit index relative to the starting frequency domain unit of third SSB, the frequency domain unit index of the starting frequency domain unit of the FPBCH is less than or equal to the frequency domain unit index of the starting frequency domain unit of the PSS and / or SSS, and / or the frequency domain unit index of the ending frequency domain unit of the FPBCH is greater than or equal to the frequency domain unit index of the ending frequency domain unit of the PSS and / or SSS; the number of frequency domain units occupied by the FPBCH is smaller than the number of frequency domain units occupied by the third SSB, wherein the number of frequency domain units occupied by the FPBCH may depend on the bandwidth size supported by the first type of UE. For example, the larger the bandwidth size supported by the first type of UE, the smaller the number of frequency domain units occupied by the FPBCH. On the contrary, the smaller the bandwidth size supported by the first type of UE, the larger the number of frequency domain units occupied by the FPBCH. The beneficial effect is to ensure that the first type UE can receive the FPBCH to obtain important random access-related information. The frequency domain unit index of the frequency domain unit occupied by SPBCH and the frequency domain unit index of the frequency domain unit occupied by FPBCH do not overlap. For example, the symbols of SPBCH will not be mapped to the resources where the FPBCH is located; the frequency domain unit (index) of the DMRS within the FPBCH is included in the frequency domain unit (index) occupied by the FBPCH, and the DMRS inter-symbol spacing may be 4 frequency domain units; the frequency domain unit (index) of the DMRS within the SPBCH is included in the frequency domain unit (index) occupied by the SBPCH, and the DMRS inter-symbol interval may be 4 frequency domain units;

[0192] >>>> Optionally, in the frequency domain, there is a certain number P2 of frequency domain intervals between FPBCH and SPBCH, which is used as a guard band to prevent subcarrier interference between FPBCH and SPBCH.

[0193] >>> The fourth structure of SSB (referred to as the fourth SSB), as shown in Figure 7,

[0194] >>>> The following is a related description of the fourth SSB. In the time domain, the fourth SSB consists of 6 time units, where the first two time units are new PBCH (such as PBCH for non-NR), and the new PBCH contains two parts: FPBCH and SPBCH, FPBCH is located on the first and second time units, SPBCH is located on the first and second time units, and the last 4 time units are legacy SSBs, such as SSBs for NR, including PSS, SSS and legacy PBCH, as shown in Figure 7. The six time units within the fourth SSB are numbered in an increasing order of from 0 to 5. In the frequency domain, the fourth SSB consists of N consecutive frequency domain units, for example N = 240, numbered in an increasing order of from 0 to N-1 within the fourth SSB. The and represent the frequency index and time index within one fourth SSB, respectively.

[0195] >>>> As one example, PSS, SSS, legacy PBCH, FPBCH, SPBCH and associated DM-RS are mapped to resource elements according to TABLE 4, wherein is an antenna port number, for example p = 4000; is the subcarrier spacing numerology, e.g. ={0,1,2,3..}, the UE can assume that the complex symbol corresponding to the signal labeled 'Set To Zero' in Table 4 is set to zero. The in Table 4 is given by , wherein is the physical cell identity (PCI), G is a positive integer, for example, G = 4. The benefit to configure the is that mutual interference of reference signals between cells can be prevented.

[0196] Table 4: Resource allocation of PSS, SSS, legacy PBCH, FPBCH, SPBCH and associated DM-RS within fourth SSB.

[0197]

[0198] It can be understood that in the above table, the time unit number of each signal or channel in the fourth SSB structure relative to the start of the fourth SSB and the frequency domain unit index relative to the starting frequency domain unit of the fourth SSB are only exemplary. This invention does not impose any restrictions on this. As long as the starting time unit index of the legacy SSB is greater than the ending time unit index of the new PBCH (the index of the last time unit occupied by the PBCH), the beneficial effect is that the UE can obtain the system information of the cell supporting non-NR by receiving the new PBCH, without redesigning a new synchronization signal for the new PBCH, and perform cell search and / or downlink synchronization by reusing the PSS and / or SSS of the legacy SSB, thus reducing the resource overhead of the synchronization signal. In addition, frequency domain unit index relative to the starting frequency domain unit of fourth SSB, the frequency domain unit index of the starting frequency domain unit of the FPBCH is less than or equal to the frequency domain unit index of the starting frequency domain unit of the PSS and / or SSS, and / or the frequency domain unit index of the ending frequency domain unit of the FPBCH is greater than or equal to the frequency domain unit index of the ending frequency domain unit of the PSS and / or SSS; the number of frequency domain units occupied by the FPBCH is smaller than the number of frequency domain units occupied by the fourth SSB, wherein the number of frequency domain units occupied by the FPBCH may depend on the bandwidth size supported by the first type of UE. For example, the larger the bandwidth size supported by the first type of UE, the smaller the number of frequency domain units occupied by the FPBCH. On the contrary, the smaller the bandwidth size supported by the first type of UE, the larger the number of frequency domain units occupied by the FPBCH. The beneficial effect is to ensure that the first type UE can receive the FPBCH to obtain important random access-related information. The frequency domain unit index of the frequency domain unit occupied by SPBCH and the frequency domain unit index of the frequency domain unit occupied by FPBCH do not overlap. For example, the symbols of SPBCH will not be mapped to the resources where the FPBCH is located; the frequency domain unit (index) of the DMRS within the FPBCH is included in the frequency domain unit (index) occupied by the FBPCH, and the DMRS inter-symbol spacing may be 4 frequency domain units; the frequency domain unit (index) of the DMRS within the SPBCH is included in the frequency domain unit (index) occupied by the SBPCH, and the DMRS inter-symbol interval may be 4 frequency domain units;

[0199] >>>> Optionally, in the frequency domain, there is a certain number P2 of frequency domain intervals between FPBCH and SPBCH, which is used as a guard band to prevent subcarrier interference between FPBCH and SPBCH.

[0200] >>> The fifth structure of SSB (referred to as the fifth SSB), as shown in Figure 8,

[0201] >>>> The following is a relevant description of the fifth SSB. In the time domain, the fifth SSB consists of 6 time units, where the PSS is located on the first time unit, the SSS is located on the third time unit, and the PBCH contains two parts: FPBCH and SPBCH, FPBCH is located on the second and fourth time units, and SPBCH is located on the fifth and sixth time units, as shown in Figure 8. The six time units within the fifth SSB are numbered in an increasing order of from 0 to 5. In the frequency domain, the fifth SSB consists of N consecutive frequency domain units, for example N = 240, numbered in an increasing order of from 0 to N-1 within the fifth SSB. The and represent the frequency index and time index within one fifth SSB, respectively.

[0202] >>>> As one example, PSS, SSS, FPBCH, SPBCH and associated DM-RS are mapped to resource elements according to TABLE 5, wherein is an antenna port number, for example p = 4000; is the subcarrier spacing numerology, e.g. ={0,1,2,3...}, the UE can assume that the complex symbol corresponding to the signal labeled 'Set To Zero' in Table 5 is set to zero. The in Table 5 is given by , wherein is the physical cell identity (PCI), G is a positive integer, for example, G = 4. The benefit to configure the is that mutual interference of reference signals between cells can be prevented.

[0203] Table 5: Resource allocation of PSS, SSS, FPBCH, SPBCH and associated DM-RS within the fifth SSB.

[0204]

[0205] It can be understood that in the above table, the time unit number of each signal or channel in the fifth SSB structure relative to the start of the fifth SSB and the frequency domain unit index relative to the starting frequency domain unit of the fifth SSB are only exemplary, and the present invention does not impose any restrictions on this, as long as the number of frequency domain units occupied by FPBCH and / or SPBCH is equal to the number of frequency domain units occupied by the fifth SSB; optionally, the number of frequency domain units occupied by FPBCH and / or SPBCH is greater than or equal to the number of frequency domain units occupied by PSS and / or SSS. The beneficial effect is that multiple time domain units are used to transmit the information included in FPBCH and SPBCH, which can ensure that the bandwidth occupied by the fifth SSB meets the bandwidth supported by the first type of UE, ensuring that the first type of UE can receive the FPBCH to obtain important information related to random access; the frequency domain unit (index) of the DMRS within the FPBCH is included in the frequency domain unit (index) occupied by the FBPCH, and the DMRS inter-symbol spacing may be 4 frequency domain units; the frequency domain unit (index) of the DMRS within the SPBCH is included in the frequency domain unit (index) occupied by the SBPCH, and the DMRS inter-symbol interval may be 4 frequency domain units; the starting time unit index of the FPBCH is larger than the ending time unit index of the SSS (the index of the last time unit occupied by the SSS).

[0206] >>> Optionally, for a UE supporting a maximum channel bandwidth of B MHz, e.g., B = 1.4, 3, 5, etc., where B MHz is smaller than the channel bandwidth occupied by the SSB, the UE is not expected to receive the SPBCH contained in the SSB,

[0207] >>> Optionally, the first type of UE, e.g. bandwidth limited UE, does not expect to receive the SPBCH contained in the SSB, e.g. the first type of UE supports a maximum channel bandwidth of 3MHz, the channel bandwidth occupied by SSB on the cell carrier is 7.5 MHz, the first type of UE is not expected to receive the SPBCH contained in the SSB (the first type of UE receives the punctured SSB formed by remaining SSB frequency domain resources except the FPBCH).

[0208] >> The PBCH may contain a combination of one or more of the following functional information

[0209] >>> The FPBCH may contain a combination of one or more of the following information:

[0210] >>>> information for timing synchronization, such as system frame number (SFN), half-frame indication, ssb index information;

[0211] >>>> information for determining whether a cell is barred from access, or cell reselection related information;

[0212] >>>> information for determining a demodulation reference signal (DM-RS) location;

[0213] >>>> configuration information (first configuration information) for determining a first control resource set (first CORESET 0) and / or a first common search space (Type0 search space), the first configuration information is used to determine a control resource set and a search space associated with a physical downlink control channel;

[0214] >>>> information for indicating an SSB frequency domain unit offset or whether a cell provides a first system information block (SIB1) or a frequency location of an SSB carrying SIB1;

[0215] >>>> information for determining subcarrier spacing of SIB1, msg2 / 4, and msgB;

[0216] >>> SPBCH can contain a combination of one or more of the following information:

[0217] >>>> configuration information (second configuration information) for determining a second control resource set (second CORESET 0) and / or a second common search space (Type0 search space), the second configuration information is used for the second type of UE to determine the configuration information associated with the physical downlink control channel;

[0218] >>>> information related to a frequency of an uplink carrier, which may be a secondary uplink carrier for random access by idle UEs, or positioning;

[0219] >>>> information related to random access, including a combination of one or more of

[0220] >>>>> random access time domain resource related configuration, for example, includes at least one of the following: random access resource configuration period, information used to indicate a time reference point (the time reference point can be at least one of the following: system frame number (SFN), subframe index, half subframe index, slot index, symbol index, subcarrier index, an index of the first physical downlink signal, etc.; alternatively, it can also be used to indicate the configuration related to the calculation of the time reference point, for example, according to the parameter O = x determined by the indication, then the time reference point is the first or last slot position of the system frame with mod (SFN, O) = x), information used to indicate the time offset (used to indicate the time offset of a random access resource (e.g., RO) from a time reference point., for example the offset may be one or more time units, where the time reference point and / or time offset may be configured by higher layers or determined based on a value of a field in the DCI related to the time reference point and / or time offset; alternatively, it can also be a time reference point specified in the protocol. For example, the time reference point can be predefined as the edge position of the SSB (for example, the starting position or the ending position), or the last or first symbol or symbol index where the SSB is located index, or the slot or slot index where the last or first symbol in which the SSB is located is located), the number and position of random access frames in the random access configuration period, the index of subframes or slots in one random access frame, the random access starting symbol position in one random access subframe or slot, the number of random access slots in one random access subframe, the number of ROs in one random access slot, the number of symbols occupied in one RO, the random access preamble format;

[0221] >>>>> Random access frequency domain resource related configuration, for example including at least one of the following: a frequency reference point (e.g., an index indicating a carrier frequency, an index of a physical resource block (PRB)) used to indicate the random access resource (e.g., RO), a frequency offset used to indicate the random access resource (e.g., RO) from the frequency reference point, for example the offset can be one or more frequency domain units, where the frequency reference point and / or frequency offset can be configured by higher layers or determined based on a value of a domain in the DCI related to the frequency reference point and / or frequency offset, or the frequency reference point can also be specified in the protocol, such as the center frequency of the SSB or the index of the lowest PRB or the frequency of the lowest subcarrier in the lowest PRB, the center frequency of coreset # 0 (Type 0 PDCCH) or the index of the PRB where the center frequency is located or the index of the lowest PRB or the frequency of the lowest subcarrier in the lowest PRB, the center frequency (PointA) of subcarrier # 0 of the common resource block, the center frequency of the initial BWP (initial bandwidth part) or the index of the lowest PRB or the frequency of the lowest subcarrier in the lowest PRB; a number of frequency domain ROs for random access, a frequency starting position of the RO for random access;

[0222] >>>>> the power-related configuration for random access including, for example, at least one of the following: preamble target received power, path loss compensation coefficient alpha (for example, alpha × path loss. when alpha is less than 1, it indicates partial path loss compensation; alpha=1, it indicates full path loss compensation; alpha > 1, it indicates excess path loss compensation. This scenario is beneficial to increase the UE's power when transmitting the preamble when using the common preamble target receiving power); a power increase delta value, a power ramping priority and / or step, etc.; the transmit power P is determined based on one or more of the target received power P0, alpha × path loss, delta, power ramping step × the number of retransmissions;

[0223] >> The encoding method of the PBCH may include a combination of one or more of the following methods:

[0224] >>> Figure 9 shows a data encoding process of the physical layer, and the specific steps are as follows:

[0225] >>>> It should be noted that the encoding process only takes PBCH as an example, and the encoding process can also be applied to other physical channels, such as PDSCH and PDCCH;

[0226] >>>> The PBCH includes two parts: FPBCH and SPBCH, which correspond to transport block 1 and transport block 2 transmitted from the higher layer to the physical layer respectively. For example, FPBCH carries the information in transport block 1, and SPBCH carries information in transport block 2;

[0227] >>> Step 510: CRC is added to transport block 1 and transport block 2, where the CRC is used for error detection of the BCH transport block, and the entire transport block is used to calculate the CRC parity bits.

[0228] >>>> For the input bit sequence of transport block 1, the parity bits are denoted as , for the input bit sequence of transport block 2, the parity bits are denoted as , A and B are the payload sizes of transport block 1 and transport block 2, L1 and L2 are the number of parity bits, and the bit sequences of transport block 1 and transport block 2 appended with CRC are and , respectively;

[0229] >>>> Optionally, L1 is equal to L2, for example L1=L2=12;

[0230] >>>> Alternatively, L1 is greater than L2, for example L1=16, L2=8;

[0231] >>>> Beneficial effects: Compared with the length of the information bit sequence carried by the total PBCH (for example, the first preset length (24bit)), the information bit sequence carried by the FPBCH (included in transmission block 1, where the length of the information bit sequence carried by the FPBCH can be, for example, the first length) and the length of the information bit sequence carried by the SPBCH (included in transport block 2, where the length of the information bit sequence carried by the SPBCH can be, for example, the second length) is shorter, therefore, shorter CRC parity codes can be used for checking, which can reduce the overhead for checking and improve the spectrum efficiency.

[0232] >>>> Alternatively, the parity bits may be calculated and appended to the BCH transport block 1 and transport block 2 by using the generator polynomial, or or , resulting in sequences and .

[0233] >>>> Optionally, the bit sequence of transport block 1 and the bit sequence of transport block 2 may be bits transmitted by higher layers to the physical layer (layer 1);

[0234] >>>> Optionally, the bit sequences in transport block 1 and transport block 2 can be transport block data obtained after interleaving and scrambling. For example, after the payloads of transport block 1 and transport block 2 are interleaved and scrambled, and are obtained, where the A and B are the payload size of transport block 1 and transport block 2.

[0235] >>>>> Optionally, before the bit sequences in transport block 1 and transport block 2 are interleaved and scrambled, additional payload bits related to timing are added, where the additional payload is generated by the physical layer, for example, before interleaving and scrambling, the bit sequence in transport block 1 is , and the bit sequence in transport block 2 is , where and are the payload size generated by the higher layer, where the lowest order information bit and are mapped to the most significant bit (MSB) of the transport block, the additional payload generated by the physical layer is ;

[0236] >>>>>> Optionally, additional payload bits related to timing are included in transport block 1 (included in the FPBCH) and not in transport block 2 (included in the SPBCH).

[0237] >>> Step 520: Transport block concatenation

[0238] >>>> The bit sequences and of transport block 1 and transport block 2 are concatenated together, resulting in the input bit sequence of the channel encoder, where,

[0239] >>>> The beneficial effect of first transport block concatenation and then channel coding is: the concatenated transport blocks can have a sufficient length to ensure the coding performance to a certain extent; before the transport block concatenation, CRC parity bits with a length less than 24 can be appended to each transport block, such as lengths of 8, 11, and 16, and then concatenated. Compared with appending CRC parity bits with a length of 24 to both transport blocks when they are not concatenated, the overhead for check bits is reduced and the spectral efficiency is improved. For example, when two transport blocks are concatenated, the total CRC parity bit length can be 16 +8 = 24. When two transport blocks are not concatenated and encoded separately, the total CRC parity bit length is 24 +24 = 48, which is greater than the length of the CRC parity bit that needs to be appended during the concatenation; in addition, for the first type of UE (such as a bandwidth-limited UE), it is possible to decode only the data of the first transport block in the concatenated transport block, and then use the CRC after the first transport block for checking. There is no need to decode the data of the subsequent second transport block, which can reduce the complexity of UE decoding.

[0240] >>> Step 530: Channel coding, the information bit sequence is input to the channel coding block

[0241] >>>> Optionally, the information bit sequence is encoded by a Polar coding, and the encoded bit sequence is (also referred to as first encoded data), where K is the number of bits and N is the number of coded bits);

[0242] >>>> Optionally, the bit sequence corresponding to transport block 1 and the bit sequence corresponding to transport block 2 in step 520 are respectively subjected to polar encoding to generate an encoded bit sequence (also referred to as second encoded data), and (also called fourth encoded data), where N1 and N2 are the number of encoded bits;

[0243] >>>>> Optionally, the encoded bit sequence and are concatenated to obtain the concatenated encoded bit sequence as the input bit sequence for rate matching, , , where N=N1+N2 is the total number of encoded bits;

[0244] >>>>> Optionally, the values of N1, N2 and N are powers of 2, such as 2, 4, 8, 16, 32, 64,128,256,512,1024;

[0245] >>>> Optionally, the bit sequence corresponding to transport block 1 in step 520 is polar encoded to generate an encoded bit sequence (for example, second encoded data); the bit sequence corresponding to transport block 2 is encoded with a small block length to obtain the encoded bit sequence (also called third encoded data), for example, according to the Reed-MullerBlock encoding method.

[0246] >>>> In particular, the transport block 2 using a small block length encoding may not have CRC parity bits appended in step 510;

[0247] >>> In step 540, rate matching, the input bit sequence is the bit sequence after channel coding in step 530

[0248] >>>> Optionally, the output bit sequence after rate matching of the bit sequence is expressed as , where E is the sequence length of the rate matching output;

[0249] >>>>> Optionally, the bit sequence may be generated by channel coding of transport block 1 and transport block 2 together;

[0250] >>>>> Optionally, the bit sequence can also be obtained by performing channel coding on transport block 1 and transport block 2 separately, and then concatenating the respective coding results;

[0251] >>>>> Alternatively, E=864;

[0252] >>>> Optionally, when transport block 1 and transport block 2 are channel coded respectively to obtain the encoded bit sequences and , the output bit sequence after rate matching the encoded bit sequences is expressed as and where E1 and E2 are the rate matching output sequence length;

[0253] >>>>> Alternatively, ;

[0254] >>>>> Alternatively, ;

[0255] >>> Step 550: Modulate, modulate the output bit sequence after rate matching

[0256] >>>> Optionally, the output bit sequence after rate matching can be , complex modulation symbols obtained after modulation;

[0257] >>>> Optionally, the output bit sequence after rate matching can be and , which are complex modulation symbols and complex modulation symbols respectively, obtained after modulation;

[0258] >>>> Optionally, the modulation method is QPSK modulation;

[0259] >>>> Optionally, the output bit sequence after rate matching is scrambled before modulation;

[0260] >>>> Optionally, the length of the modulation symbol may be ;

[0261] >>>> Optionally, the length of the modulation symbol may be

[0262] > Optionally, the UE determines whether the control resource set of the common search space set exists according to the Master Information Block (MIB). For example, the UE determines from the k_SSB (included in the FPBCH) used to indicate SSB frequency domain unit offset, when k_SSB < 24 (for FR1) or k_SSB < 12 (for FR2), the UE determines that there is a control resource set in the common search space set; when k_SSB > 23 (for FR1) or k_SSB > 11 (for FR2), the UE determines that there is no control resource set in the common search space set.

[0263] > If the UE determines that there is a control resource set in the common search space set according to the MIB, the UE determines the PDCCH monitoring occasion, and determines the number of consecutive frequency domain units and the number of consecutive time domain units for the PDCCH according to the configuration related to the control resource set;

[0264] >> herein, the above configuration related to the control resource set includes at least one of the following: a multiplexing mode, a number of occupied (consecutive) frequency domain units, a number of occupied (consecutive) time domain units, frequency domain resource offset relative to SSB (which can be one or more frequency domain units); the above configuration related to common search space set includes at least one of the following: a time domain offset relative to the starting position of the system frame (which can be one or more time units), the number of search space sets in each frequency domain unit, the starting symbol of the time unit containing the search space set;

[0265] >> The configuration related to common search space set and the configuration related to the control resource set are determined based on first configuration information included in the FPBCH and / or second configuration information included in the SPBCH;

[0266] >>> Optionally, a first type of UE, e.g., a bandwidth limited UE, does not expect to receive the SPBCH contained in the SSB, e.g., the first type of UE supports a maximum channel bandwidth of B MHz, e.g., B = 1.4, 3, 5, etc., where B MHz is smaller than the channel bandwidth occupied by the SSB;

[0267] >>> The UE determines a first control resource set and / or a first common search space set according to the first configuration information;

[0268] >>>> One possible implementation method is: the first configuration information can be represented by a bit sequence [b3, b2, b1, b0]. For example, the upper 2 bits [b3, b2] of the first configuration information can be used to determine the control resource set or the common search space set, and the lower 2 bits [b1, b0] are used to determine the common search space set or the control resource set.

[0269] >>> Optionally, for a UE that supports a maximum channel bandwidth of C MHz, such as C = 10, 20, 40, 80, etc., where C MHz is greater than the channel bandwidth occupied by the SSB, the UE determines the number of consecutive time units and the number of consecutive frequency domain units of the second control resource set and / or the second common search space set according to the first configuration information and the second configuration information, the first configuration information is included in the FPBCH, and the second configuration information is included in the SPBCH;

[0270] >>>> A possible implementation method is: the first configuration information can be represented by a bit sequence [b3, b2, b1, b0], the second configuration information can be represented by a bit sequence [c3, c2, c1, c0], and the UE is based on the third configuration information, where the third configuration information can be obtained through the first configuration information and the second configuration information, for example, the third configuration information is [c3, c2, b3, b2, c1, c0, b1, b0], where the upper 4 bits of the third configuration information are respectively composed of the upper 2 bits of the first configuration information and the second configuration information, and the lower 4 bits of the third configuration information are respectively composed of the lower 2 bits of the first configuration information and the second configuration information; the upper 4 bits [c3, c2, b3, b2] of the third configuration information can be used to determine the control resource set, and the lower 4 bits [c1, c0, b1, b0] of the third configuration information can be used to determine the common search space collection;

[0271] >> Optionally, for different types of UEs, different types of DCI can be received, and the received DCI is different, where the DCI can be included in different PDCCHs, for example, the configuration of the common search space set and control resource set for the Type 1 UE is different from the common search space set and control resource set for the Type 2 UE;

[0272] >> Optionally, the CRC of the PDCCH monitored by the UE is scrambled by a new radio network temporary identifier (RNTI), which is related to the type of the UE, for example, UE type 1 and UE type 2 correspond to RNTI 1 and RNTI 2 respectively, where RNTI 1 and RNTI 2 can be preset by the protocol. (Beneficial effects: for different types of UEs, the network device can schedule PDSCH for different types of UEs suitable for their supported bandwidth, based on the bandwidth supported by different UE types, using DCI scrambled by RNTI related to UE types, thus improving the efficiency of network scheduling and resource utilization);

[0273] > The UE obtains system information (SI), wherein SIB1 is carried in the PDSCH scheduled by the PDCCH, the CRC of which is scrambled by SI-RNTI;

[0274] >> Optionally, a first type of UE (e.g., a bandwidth limited UE) obtains first system information (first SI), where the first SI may be included in SIB1 or may be included in a dedicated SIB. The first SI may include at least one of the following information: configuration information of a common physical downlink shared channel (PDSCH) and / or a physical downlink control channel (PDCCH), configuration information of a common physical uplink shared channel (PUSCH) and / or a physical uplink control channel (PUCCH), initial uplink and / or the configuration information of initial uplink and / or downlink bandwidth part (BWP), the configuration information of common random access, etc.;

[0275] >> Optionally, a second type of UE (e.g., a bandwidth limited UE or the UE supports a larger bandwidth size) obtains second system information (second SI), where the second SI may be included in SIB1 or may be included in a dedicated SIB. The second SI may include at least one of the following information: the first SI, dedicated random access configuration information, dedicated uplink and / or dedicated downlink BWP configuration information, dedicated PDSCH and / or PDCCH configuration information, dedicated PUSCH and / or PUCCH configuration information, etc.;

[0276] >> Optionally, the first type of UE (e.g., bandwidth limited UE) is not expected to obtain the second SI;

[0277] > The UE selects an uplink resource and transmits an uplink signal on the uplink resource, and the uplink resource and uplink signal are determined based on the information contained in the first SI or the second SI, specifically including a combination of one or more of the following:

[0278] >> The uplink signal may be a random access preamble, where the selection of the preamble may be based on the type of UE. For different types of UEs, the preambles that can be selected are different;

[0279] >> The uplink resource can be a random access opportunity (RO) or a random access time group (RO group), where the selection of uplink resources can be based on the type of UE. For different types of UEs, the uplink resources that can be selected are different;

[0280] >> The beneficial effect is that the network device can determine the type of UE performing random access through the preamble or uplink resources, which is beneficial to the scheduling of subsequent resources.

[0281] > The network device detects and receives the uplink signal transmitted by the UE, and the UE receives feedback from the network device, specifically including a combination of one or more of the following:

[0282] >> The network device determines the type of UE according to the uplink signal transmitted by the UE or the selected uplink resource, and transmits feedback information based on the type of UE, where the feedback information may be RAR (msg2 or msgB);

[0283] >>> Optionally, the RAR feedback may be different for different types of UEs; for example, a first type of UE may receive a first RAR based on a first random access RNTI (RA-RNTI), and a second type of UE may receive a second RAR based on a second random access RNTI, where the first / second random access RNTI may be determined based on the UE type and the uplink resource selected by the UE, for example, the first type of UE selects the first uplink resource, and the second type of UE selects the second uplink resource, wherein, optionally, the first uplink resource may be determined based on the dedicated random access configuration information in the second system information block, and the second uplink resource may be determined based on the common random access configuration information in the first system information block. A possible implementation for calculating RA-RNTI is RA-RNTI = 1 + s_id + 14 * t_id + 14 * 80 * f_id + 14 * 80 * 8 * ul_carrier_id +14 * 80 * k * 2 * UEtype_id, where s_id is the index of the first symbol of the first / second uplink resource, such as the index of the OFDM symbol, t_id is the index of the slot including the first / second uplink resource, f_id is the index in the frequency domain including the first / second uplink resource, k is the maximum value of f_id, such as k=8, ul_carrier_id is the UL carrier used for random access preamble transmission (0 for the NUL carrier, 1 for the SUL carrier), UEtype_id is the index of different types of UEs, e.g., UEtype_id = 0 for first type of UE, UEtype_id = 1 for second type of UE. The beneficial effect of the above method is: UEs of different UE types can generate different RA-RNTIs based on their types or based on their types and different uplink resources, for monitoring the PDCCH of msg2, which improves the success rate of receiving the PDCCH.

[0284] In the above method of the present disclosure, by dividing the first physical downlink channel into the first part and the second part of the first physical downlink channel, for the first type of UE (for example, a bandwidth limited UE), only the first part of the first physical downlink channel can be received, and for the second type of UE (for example, a UE supporting a larger bandwidth), the first part and the second part of the first physical downlink channel can be received, wherein the bandwidth occupied by the first part (is smaller than the bandwidth occupied by the first physical downlink channel) meets the bandwidth supported by the first type of UE, and the first part contains necessary information for random access, thereby ensuring the random access performance of different types of UEs.

[0285] Fig. 10 is a block diagram illustrating the structure of a user equipment 600 according to an embodiment of the present disclosure.

[0286] Referring to Fig. 10, a user equipment 600 includes a transceiver 601 and a controller 602. The transceiver 601 is configured to transmit and receive signals to and from the outside. The controller 602 is configured to perform the method performed by the user equipment described above. The user equipment 600 may be implemented in the form of hardware, software, or a combination of hardware and software, so as to enable it to perform the method performed by the user equipment described in the present disclosure.

[0287] Fig. 11 is a block diagram illustrating the structure of a network node 700 according to an embodiment of the present disclosure.

[0288] Referring to Fig. 11, a network node 700 includes a transceiver 701 and a controller 702. The transceiver 701 is configured to transmit and receive signals to and from the outside. The controller 702 is configured to perform the method performed by the base station described above. The network node 700 may be implemented in the form of hardware, software, or a combination of hardware and software, so that it can perform the method described by the network node in this disclosure.

[0289] Those skilled in the art will understand that the illustrative embodiments described above are described herein and are not intended to be limiting. It should be understood that any two or more of the embodiments disclosed herein can be combined in any combination. In addition, other embodiments can be utilized and other changes can be made without departing from the spirit and scope of the subject matter presented herein. It will be readily understood that aspects of the present invention of the present disclosure, as generally described herein and shown in the accompanying drawings, can be arranged, substituted, combined, separated and designed in various different configurations, all of which are contemplated herein.

[0290] Those skilled in the art will understand that the various illustrative logical blocks, modules, circuits, and steps described in the present application can be implemented as hardware, software, or a combination of both. In order to clearly illustrate this interchangeability between hardware and software, various illustrative components, blocks, modules, circuits, and steps are generally described above in the form of their function set. Whether such a function set is implemented as hardware or software depends on the specific application and the design constraints imposed on the overall system. Skilled people can implement the described function set in different ways for each specific application, but such design decisions should not be interpreted as causing a departure from the scope of the present application.

[0291] The various illustrative logic blocks, modules, and circuits described in the present application can be implemented in a general-purpose processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other programmable logic devices, discrete gate or transistor logic, discrete hardware component, or any combination thereof designed to perform the functions described herein. A general-purpose processor may be a microprocessor, but in the alternative, the processor may be any conventional processor, controller, microcontroller, or state machine. A processor may also be implemented as a combination of computing devices, such as a combination of a DSP and a microprocessor, a plurality of microprocessors, one or more microprocessors cooperating with a DSP core, or any other such configuration.

[0292] The steps of the method or technique described in the present application can be embodied directly in hardware, in a software module executed by a processor, or in a combination of both. Software modules may reside in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, register, hard disk, removable disk, or any other form of storage media known in the art. An exemplary storage medium is coupled to a processor to enable the processor to read and write information from / to the storage medium. In the alternative, the storage medium may be integrated into the processor. The processor and storage medium may reside in an ASIC. The ASIC may reside in the UE. In the alternative, the processor and the storage medium may reside in the UE as discrete components.

[0293] In one or more exemplary designs, the described functions can be implemented in hardware, software, firmware, or any combination thereof. If implemented in software, each function can be stored on or transferred by a computer-readable medium as one or more instructions or codes. Computer-readable media include both computer storage media and communication media, which includes any media that facilitates the transfer of computer programs from one place to another. The storage medium may be any available medium that can be accessed by a general-purpose or special-purpose computer.

[0294] What has been described above is only an exemplary embodiment of the present disclosure, and is not used to limit the protection scope of the present disclosure, which is determined by the appended claims.

Claims

1.A method performed by a user equipment (UE) in a communication system, comprising:receiving a first synchronization signal block, wherein the first synchronization signal block includes a first part of a first physical downlink channel; or the first synchronization signal block includes the first part and a second part of the first physical downlink channel; wherein the first part of the first physical downlink channel includes first information for a first type of UE and a second type of UE, and the second part of the first physical downlink channel includes second information for the second type of UE;determining an uplink signal or an uplink resource;transmitting the uplink signal to a network node on the uplink resource;wherein in the case that the UE is the first type of UE, the uplink signal or uplink resource are determined based on the first information, orin the case that the UE is the second type of UE, the uplink signal or uplink resource are determined based on the first information and the second information.2.The method according to claim 1, wherein the first part of the first physical downlink channel is mapped to a first frequency domain range, the second part of the first physical downlink channel is mapped to a second frequency domain range or a third frequency domain range, wherein a maximum frequency of the second frequency domain range is smaller than a minimum frequency of the first frequency domain range, and a minimum frequency of the third frequency domain range is larger than a maximum frequency of the first frequency domain range; orthe first part of the first physical downlink channel is mapped to a first time domain range, and the second part of the first physical downlink channel is mapped to a second time domain range, wherein a maximum time of the first time domain range is less than a minimum time of the second time domain range; orthe first part and the second part of the first physical downlink channel are mapped to a third time domain range, wherein a minimum time of the third time domain range is less than a maximum time of a fourth time domain range to which a physical broadcast channel (PBCH) is mapped, or a maximum time of the third time domain range is less than a minimum time of the fourth time domain range to which the physical broadcast channel (PBCH) is mapped.3.The method according to claim 2, wherein a first modulation symbol block is mapped to a resource element associated with the first part and the second part of the first physical downlink channel in a first mapping order;wherein the first mapping order includes at least one of:performing a first mapping in an order of first in the first time domain range and the first frequency domain range, then in the second time domain range and the second frequency domain range, and finally in the second time domain range and the third frequency domain range, wherein the first mapping to the resource elementis in an increasing order of first the indexand then the index; orperforming the first mapping in an order of first in the first time domain range and the first frequency domain range, then in the second time domain range and the third frequency domain range, and finally in the second time domain range and the second frequency domain range, wherein the first mapping to the resource elementis in an increasing order of first the indexand then the index;whereinis a frequency index,is a time index,is an antenna port number,is a subcarrier spacing numerology;wherein the first modulation symbol block is obtained by modulating a transmission block transmitted by a higher layer to a physical layer.4.The method according to claim 1, wherein the first physical downlink channel includes a first physical broadcast channel (PBCH),wherein the first information includes first configuration information associated with a physical downlink control channel; andwherein the second information includes at least one of:second configuration information associated with the physical downlink control channel;information relating to a frequency of an uplink carrier;information related to a random access.5.The method according to claim 4, wherein the method further comprises:in the case that the UE is the first type of UE, the information related to the physical downlink control channel is determined based on the first configuration information; or,in the case that the UE is the second type of UE, the information related to the physical downlink control channel is determined based on the first configuration information and the second configuration information.6.The method according to claim 5, the method further comprising:monitoring the physical downlink control channel (PDCCH) in a determined common search space, wherein the PDCCH is scrambled with a first radio network temporary identifier (RNTI) or a second RNTI,wherein the first RNTI corresponds to the first type of UE and the second RNTI corresponds to the second type of UE.7.The method according to claim 5, the method further comprising:receiving a second physical downlink channel, wherein the second physical downlink channel includes a first part of a system information block, or includes the first part of the system information block and a second part of the system information block, wherein the first part of the system information block is used for the first type of UE and the second type of the UE, and the second part of the system information block is used for the second type of UE;wherein the second physical downlink channel includes a physical downlink shared channel (PDSCH).8.The method according to claim 1, wherein the method further comprises:receiving feedback information for the uplink signal from the network node based on a first random access radio network temporary identifier (RNTI) or a second random access RNTI,wherein the first random access RNTI or the second random access RNTI is determined based on the type of UE and the uplink resource.9.The method according to claim 1, wherein a first modulation symbol block mapped to a resource corresponding to the first part and the second part of the first physical downlink channel is obtained by performing a first processing on a first encoded data; orwherein a second modulation symbol block mapped to a resource corresponding to the first part of the first physical downlink channel is obtained by performing the first processing a second encoded data; orwherein a third modulation symbol block mapped to a resource corresponding to the second part of the first physical downlink channel is obtained by performing the first processing on a third encoded data or a fourth encoded data;wherein the first processing includes at least one of rate matching, scrambling, and modulation.10.The method according to claim 9, wherein the first encoded data is obtained by performing a channel encoding on a third block with a polar encoding;wherein the third block is obtained by concatenating a first block and a second block, the first block is obtained by appending a first cyclic redundancy check (CRC) to a first transport block and the second block is obtained by appending a second CRC to a second transport block,wherein data of the first transport block is included in the first part of the first physical downlink channel and data of the second transport block is included in the second part of the first physical downlink channel, the first transport block and the second transport block are data packets transmitted from a higher layer to a physical layer.11.The method according to claim 9, wherein the second encoded data is obtained by performing a channel encoding on a first block with a polar encoding, wherein the first block is obtained by appending a first cyclic redundancy check (CRC) to a first transport block;wherein the third encoded data is obtained by performing a channel encoding on a second transport block with a small block length encoding;wherein the fourth encoded data is obtained by performing a channel encoding on a second block with a polar encoding, wherein the second block is obtained by appending a second CRC to the second transport block;wherein data of the first transport block is included in the first part of the first physical downlink channel and data of the second transport block is included in the second part of the first physical downlink channel, the first transport block and the second transport block are data packets transmitted from a higher layer to a physical layer.12.The method according to claim 9, wherein a second modulation symbol block is mapped to a resource element associated with the first part of the first physical downlink channel in a second mapping order; a third modulation symbol block is mapped to a resource element associated with the second part of the first physical downlink channel in a third mapping order;wherein the second mapping order includes: a second mapping to the resource elementin the first frequency domain range and the first time domain range being in an increasing order of first the indexand then the index;wherein the third mapping order includes at least one of:performing a third mapping in an order of first in the second time domain range and the second frequency domain range, and then in the second time domain range and the third frequency domain range, wherein the third mapping to the resource elementis in an increasing order of first the indexand then the index; orperforming the third mapping in an order of first in the second time domain range and the third frequency domain range, and then in the second time domain range and the second frequency domain range, wherein the third mapping to the resource elementis in an increasing order of first the indexand then the index; orthe third mapping to the resource elementin the first frequency domain range and the second time domain range is in an increasing order of first the indexand then the index;whereinis a frequency index,is a time index,is an antenna port number,is a subcarrier spacing numerology;wherein a maximum frequency of the second frequency domain range is smaller than a minimum frequency of the first frequency domain range, and a minimum frequency of the third frequency domain range is larger than a maximum frequency of the first frequency domain range; a maximum time of the first time domain range is less than a minimum time of the second time domain range.13.The method according to claim 10, wherein a type of the first CRC and the second CRC is associated with a first length and a type of the second CRC is associated with a second length.14.A method performed by a network node in a communication system, comprising:transmitting a first synchronization signal block, wherein the first synchronization signal block includes a first part and a second part of the first physical downlink channel; wherein the first part of the first physical downlink channel includes first information for a first type of UE and a second type of UE, and the second part of the first physical downlink channel includes second information for the second type of UE;receiving an uplink signal from the UE on an uplink resource, wherein in the case that the UE is the first type of UE, the uplink signal or uplink resource are determined based on the first information, or in the case that the UE is the second type of UE, the uplink signal or uplink resource are determined based on the first information and the second information;transmitting feedback information to the UE, wherein the feedback information is determined based on a type of UE, and wherein the type of UE is determined based on the uplink resource or the uplink signal.15.A user equipment, the user equipment comprising:a transceiver configured to transmit and receive signals; anda controller configured to control the transceiver to perform a method according to claim 1.

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