Method and apparatus for radio resource mapping and scheduling

Abstract

In some embodiments, a wireless communication method includes receiving, by a wireless communication device, a plurality of common signals from a wireless communication node. The wireless communication node provides a plurality of cell beams. The wireless communication method includes determining, by the wireless communication device, an index of one of the plurality of cell beams selected by the wireless communication device based on corresponding reception timings of one or more of the plurality of common signals.

Description

Technical Field

[0001] The present disclosure relates generally to wireless communications and, more particularly, to systems and methods for radio resource mapping and scheduling. Background Art

[0002] Narrowband Internet of Things (NB-IoT) and enhanced Machine Type Communications (eMTC), such as bandwidth reduction, low complexity (BL) user equipment (UE) or coverage enhanced (CE) UE, are established as the 3rd Generation Partnership Project (3GPP) standards for IoT connectivity. More than 160 operators in 69 countries are investing in NB-IoT network technology, creating a global ecosystem and hardware suppliers that support the entire industry chain from chipsets to complete devices. Summary of the invention

[0003] The example embodiments disclosed herein are intended to solve problems related to one or more difficulties existing in the prior art, as well as to provide additional features that will become apparent by reference to the following detailed description when combined with the accompanying drawings. According to various embodiments, example systems, methods, devices, and computer program products are disclosed herein. However, it should be understood that these embodiments are presented by way of example and not limitation, and it will be apparent to those of ordinary skill in the art who have read this disclosure that various modifications may be made to the disclosed embodiments while remaining within the scope of this disclosure.

[0004] In some embodiments, a wireless communication method includes receiving, by a wireless communication device, a plurality of common signals from a wireless communication node. The wireless communication node provides a plurality of cell beams. The wireless communication method includes determining, by the wireless communication device, an index of one of the plurality of cell beams selected by the wireless communication device based on corresponding reception timings of one or more of the plurality of common signals.

[0005] In some embodiments, the one or more common signals include a primary synchronization signal and a secondary synchronization signal. In some embodiments, the method further includes determining, by the wireless communication device, a reception timing of the primary synchronization signal and / or a reception timing of the secondary synchronization signal based on identifying during which of the plurality of system frames the wireless communication device receives the primary synchronization signal and / or the secondary synchronization signal, and determining, by the wireless communication device, an index of a cell beam selected by the wireless communication device based on the determined reception timing of the primary synchronization signal and / or the determined reception timing of the secondary synchronization signal.

[0006] In some embodiments, a wireless communication method includes determining, by a wireless communication node, corresponding transmission timings of a plurality of common signals, and sending, by the wireless communication node, the plurality of common signals to a wireless communication device through a plurality of cell beams according to the determined transmission timings.

[0007] In some embodiments, the one or more common signals include a primary synchronization signal and a secondary synchronization signal. In some embodiments, the method further includes determining, by the wireless communication node, a transmission timing of the primary synchronization signal and / or a transmission timing of the secondary synchronization signal based on which system frames in the plurality of system frames the wireless communication node transmits the primary synchronization signal and / or the secondary synchronization signal, thereby causing the wireless communication device to select one of the plurality of cell beams according to the determined transmission timing of the primary synchronization signal and / or the determined transmission timing of the secondary synchronization signal.

[0008] The above and other aspects and embodiments thereof are described in more detail in the drawings, the description and the claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Various example embodiments of the present solution are described in detail below with reference to the following figures or drawings. The drawings are provided for illustrative purposes only and depict only example embodiments of the present solution to facilitate the reader's understanding of the present solution. Therefore, the drawings should not be considered as limiting the breadth, scope or applicability of the present solution. It should be noted that for the sake of clarity and ease of illustration, these drawings are not necessarily drawn to scale.

[0010] Figure 1 An example cellular communication network is illustrated in accordance with an embodiment of the present disclosure in which techniques and other aspects disclosed herein may be implemented.

[0011] Figure 2 A block diagram of example base station and user equipment devices according to some embodiments of the present disclosure is shown.

[0012] Figure 3 is a diagram illustrating an example relationship between non-terrestrial network (NTN) cells, cell beams, and satellite beams according to some embodiments of the present disclosure.

[0013] Figure 4A is a diagram showing an example mapping between a cell beam and narrowband primary synchronization signal (PSSS) / narrowband secondary synchronization signal (NSSS) information (info) according to some embodiments of the present disclosure.

[0014] Figure 4B is a diagram showing an example mapping between cell beams and PSSS / NSSS information according to some embodiments of the present disclosure.

[0015] Figure 4C is a diagram showing an example mapping between cell beams and PSSS / NSSS information according to some embodiments of the present disclosure.

[0016] Figure 4D is a diagram showing an example mapping between cell beams and PSSS / NSSS information according to some embodiments of the present disclosure.

[0017] Figure 4E is a diagram showing an example mapping between cell beams and PSS / SSS information according to some embodiments of the present disclosure.

[0018] Figure 5A is a diagram showing an example mapping between cell beams and master information block (MIB) information according to some embodiments of the present disclosure.

[0019] Figure 5B is a diagram showing an example mapping between cell beams and MIB information according to some embodiments of the present disclosure.

[0020] Figure 5C is a diagram showing an example mapping between cell beams and MIB information according to some embodiments of the present disclosure.

[0021] Figure 5D is a diagram showing an example mapping between cell beams and MIB information according to some embodiments of the present disclosure.

[0022] Figure 5E is a diagram showing an example mapping between cell beams and MIB information according to some embodiments of the present disclosure.

[0023] Fig. 6A is a diagram showing an example mapping between cell beams and system information block 1 (SIB) information according to some embodiments of the present disclosure.

[0024] Figure 6B is a diagram showing an example mapping between cell beams and SIB1 information according to some embodiments of the present disclosure.

[0025] Figure 6C is a diagram showing an example mapping between cell beams and SIB1 information according to some embodiments of the present disclosure.

[0026] Fig.6D is a diagram showing an example mapping between cell beams and SIB1 information according to some embodiments of the present disclosure.

[0027] Figure 7 is a diagram showing an example mapping between cell beams and narrowband physical random access channel (NPRACH) resources according to some embodiments of the present disclosure.

[0028] Figure 8 is a flowchart illustrating a method for determining a cell beam according to some embodiments of the present disclosure.

[0029] Fig. 9 is a flow chart illustrating a method for transmitting a common signal according to some embodiments of the present disclosure. DETAILED DESCRIPTION

[0030] Various example embodiments of the present solution are described below with reference to the accompanying drawings to enable a person of ordinary skill in the art to make and use the present solution. It will be apparent to a person of ordinary skill in the art that, after reading this disclosure, various changes or modifications may be made to the examples described herein without departing from the scope of the present solution. Therefore, the present solution is not limited to the example embodiments and applications described and illustrated herein. In addition, the specific order and / or hierarchy of steps in the methods disclosed herein are merely example approaches. Based on design preferences, the specific order or hierarchy of steps of the disclosed methods or processes may be rearranged while remaining within the scope of the present solution. Therefore, a person of ordinary skill in the art will understand that the methods and techniques disclosed herein present various steps or actions in a sample order, and unless otherwise expressly stated, the present solution is not limited to the specific order or hierarchy presented.

[0031] A. Network environment and computing environment

[0032] Figure 1 An example wireless communication network and / or system 100 is illustrated in accordance with an embodiment of the present disclosure, in which the techniques disclosed herein may be implemented. In the following discussion, the wireless communication network 100 may be any wireless network such as a cellular network or a narrowband Internet of Things (NB-IoT) network, and is referred to herein as "network 100." Such an example network 100 includes: a base station 102 (hereinafter referred to as "BS 102") and a user equipment 104 (hereinafter referred to as "UE 104") that may communicate with each other via a communication link 110 (e.g., a wireless communication channel), and a cluster of cells 126, 130, 132, 134, 136, 138, and 140 covering a geographic area 101. In Figure 1 1, BS 102 and UE 104 are contained within the respective geographic boundaries of cell 126. Each of the other cells 130, 132, 134, 136, 138, and 140 may include at least one base station operating within its allocated bandwidth to provide adequate radio coverage to its intended users.

[0033] For example, BS 102 may operate under an allocated channel transmission bandwidth to provide adequate coverage to UE 104. BS 102 and UE 104 may communicate via downlink radio frames 118 and uplink radio frames 124, respectively. Each radio frame 118 / 124 may be further divided into subframes 120 / 127, which may include data symbols 122 / 128. In the present disclosure, BS 102 and UE 104 are generally described herein as non-limiting examples of "communication nodes" that may practice the methods disclosed herein. According to various embodiments of the present solution, such communication nodes may be capable of wireless and / or wired communications.

[0034] Figure 2 A block diagram of an example wireless communication system 200 for transmitting and receiving wireless communication signals, such as OFDM / OFDMA signals, according to some embodiments of the present solution is illustrated. The system 200 may include components and elements configured to support known or conventional operating features that need not be described in detail herein. In one illustrative embodiment, the system 200 may be used in a communication environment such as Figure 1 The data symbols are transmitted (eg, transmitted and received) in the wireless communication environment 100 of the wireless communication environment, as described above.

[0035] The system 200 generally includes a base station 202 (hereinafter referred to as "BS 202") and a user equipment 204 (hereinafter referred to as "UE 204"). The BS 202 includes: a BS (base station) transceiver module 210, a BS antenna 212, a BS processor module 214, a BS memory module 216, and a network communication module 218, each module is coupled to and interconnected with each other via a data communication bus 220 as needed. The UE 204 includes: a UE (user equipment) transceiver module 230, a UE antenna 232, a UE memory module 234, and a UE processor module 236, each module is coupled to and interconnected with each other via a data communication bus 240 as needed. The BS 202 communicates with the UE 204 via a communication channel 250, which can be any wireless channel or other medium suitable for data transmission as described herein.

[0036] As will be appreciated by those skilled in the art, the system 200 may also include Figure 2Any number of modules outside the modules shown. It will be appreciated by those skilled in the art that the various illustrative blocks, modules, circuits, and processing logic described in conjunction with the embodiments disclosed herein can be implemented in hardware, computer-readable software, firmware, or any actual combination thereof. In order to clearly illustrate this interchangeability and compatibility of hardware, firmware, and software, various illustrative components, blocks, modules, circuits, and steps are generally described in terms of their functionality. Whether this functionality is implemented as hardware, firmware, or software can depend on specific applications and design constraints imposed on the entire system. A technician familiar with the concepts described herein can implement this functionality in a suitable manner for each specific application, but this implementation decision should not be interpreted as limiting the scope of the present disclosure.

[0037] According to some embodiments, the UE transceiver 230 may be referred to herein as an "uplink" transceiver 230, which includes a radio frequency (RF) transmitter and an RF receiver, each including circuits coupled to an antenna 232. A duplex switch (not shown) may alternately couple the uplink transmitter or receiver to the uplink antenna in a time duplex manner. Similarly, according to some embodiments, the BS transceiver 210 may be referred to herein as a "downlink" transceiver 210, which includes a radio frequency (RF) transmitter and an RF receiver, each including circuits coupled to an antenna 212. The downlink duplex switch may alternately couple the downlink transmitter or receiver to the downlink antenna 212 in a time division duplex manner. The operation of the two transceiver modules 210 and 230 may be coordinated in time such that while the downlink transmitter is coupled to the downlink antenna 212, the uplink receiver circuit is coupled to the uplink antenna 232 for receiving transmissions over the wireless transmission link 250. In some embodiments, there is tight time synchronization with minimal guard times between changes in duplex direction.

[0038] The UE transceiver 230 and the base station transceiver 210 are configured to communicate via a wireless data communication link 250 and cooperate with an appropriately configured RF antenna arrangement 212 / 232 capable of supporting a specific wireless communication protocol and modulation scheme. In some illustrative embodiments, the UE transceiver 230 and the base station transceiver 210 are configured to support industry standards such as Long Term Evolution (LTE) and emerging 5G standards. However, it should be understood that the present disclosure is not necessarily limited to specific standards and associated protocols in application. More specifically, the UE transceiver 230 and the base station transceiver 210 can be configured to support alternative or additional wireless data communication protocols, including future standards or variations thereof.

[0039] According to various embodiments, BS 202 may be, for example, an evolved Node B (eNB), a serving eNB, a target eNB, a femtocell or a microcell. According to some embodiments, UE 204 may be embodied in various types of user equipment, such as a mobile phone, a smart phone, a personal digital assistant (PDA), a tablet computer, a laptop, a wearable computing device, etc. Processor modules 214 and 236 may be implemented or realized using a general purpose processor, a content addressable memory, a digital signal processor, an application specific integrated circuit, a field programmable gate array, any suitable programmable logic device, a discrete gate or transistor logic, a discrete hardware component, or any combination thereof designed to perform the functions described herein. In this way, the processor may be implemented as a microprocessor, a controller, a microcontroller, a state machine, or the like. The processor may also be implemented as a combination of computing devices, for example, a combination of a digital signal processor and a microprocessor, a plurality of microprocessors, one or more microprocessors combined with a digital signal processor core, or any other such configuration.

[0040] In addition, the steps of the methods or algorithms described in conjunction with the embodiments disclosed herein may be directly embodied in hardware, firmware, software modules executed by processor modules 214 and 236, respectively, or any practical combination thereof. Memory modules 216 and 234 may be implemented as RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, removable disk, CD-ROM, or any other form of storage medium known in the art. In this regard, memory modules 216 and 234 may be coupled to processor modules 210 and 230, respectively, so that processor modules 210 and 230 may read information from and write information to memory modules 216 and 234, respectively. Memory modules 216 and 234 may also be integrated into their respective processor modules 210 and 230. In some embodiments, memory modules 216 and 234 may each include a cache memory for storing temporary variables or other intermediate information during the execution of instructions executed by processor modules 210 and 230, respectively. Memory modules 216 and 234 may also each include non-volatile memory for storing instructions to be executed by processor modules 210 and 230, respectively.

[0041] The network communication module 218 generally represents the hardware, software, firmware, processing logic and / or other components of the base station 202, which enables two-way communication between the BS transceiver 210 and other network components and the communication nodes configured to communicate with the base station 202. For example, the network communication module 218 can be configured to support Internet or WiMAX traffic. In a typical deployment, in a non-limiting manner, the network communication module 218 provides an 802.3 Ethernet interface so that the base station transceiver 210 can communicate with a computer network based on a conventional Ethernet. In this way, the network communication module 218 may include a physical interface for connecting to a computer network (e.g., a mobile switching center (MSC)). The terms "configured for...", "configured to..." and their word forms used herein with respect to a specified operation or function refer to a device, component, circuit, structure, machine, signal, etc. that is physically constructed, programmed, formatted and / or arranged to perform a specified operation or function.

[0042] B. Method and Apparatus for Radio Resource Mapping and Scheduling

[0043] Embodiments are disclosed herein for reducing system information (SI) acquisition of user equipment (UE, such as UE 104, UE 204, mobile device, wireless communication device, etc.) in an Internet of Things (IoT) cell on a non-terrestrial network (NTN), and for increasing the capacity of the IoT cell on the NTN. In some embodiments, the NTN has a very large (e.g., larger than a predetermined) coverage area.

[0044] For IoT networks on NTN, satellites (e.g., BS 102, BS 202, next generation NodeB (gNB), evolved NodeB (eNB), narrowband-IoT (NB-IoT), enhanced machine type communication (eMTC) NodeB, wireless communication nodes, RF (radio frequency unit) of BS 102, RF of BS 202, RF of gNB, RF of eNB, RF of NB-IoT NodeB, RF of eMTC NodeB, RF of wireless communication nodes, etc.) may cover a very large area, and there may be IoT cells on satellites (e.g., IoT / NTN cells are omnidirectional cells and can span hundreds of kilometers). Very large cell coverage may result in very small (e.g., less than a predetermined) network capacity.

[0045] In addition, low earth orbit (LEO) satellites may move quickly (e.g., less than a predetermined amount of time). For example, a UE may switch from the coverage of one satellite to the coverage of another satellite every predetermined amount of time (e.g., 10 minutes), and the switching between the coverage of satellite beams may be more frequent. When a UE moves to a new cell, the UE may read the SI of the cell. Frequent SI reading may cost / consume much (e.g., greater than a predetermined amount) of UE power.

[0046] Embodiments of methods and apparatus for increasing the capacity of an IoT cell on an NTN and reducing SI acquisition of a UE in an IoT cell on an NTN are disclosed herein.

[0047] Figure 3 is a diagram showing an example relationship between NTN cells, cell beams, and satellite beams according to some embodiments of the present disclosure. A cell has a cell identifier, such as a physical cell identifier (PCI), and can be split (e.g., separated, split, divided, or otherwise arranged) into one or more cell beams. For example, a cell is split into "m" number of cell beams, "m" being a positive integer. A cell beam can be mapped to one or more satellite beams (e.g., mapped to "n" number of satellite beams, "n" being a positive integer). A "cell beam" may be referred to as a "cell sector", "cell area", or "synchronization signal block (SSB) beam", which includes at least one of a "primary synchronization signal (PSS) block beam" and / or a "secondary synchronization signal (SSS) block beam", etc., which is used to split a cell PSS / SSS / MIB / SIB1 transmission area into multiple sub-areas. Each sub-area may have similar RF propagation delays, similar channel propagation characteristics, similar antenna characteristics, similar spatial code characteristics, etc. One sub-region corresponds to one physical random access channel (PRACH) resource set, and based on the PRACH resources selected by the UE, the eNB (eg, the RF of the eNB) may determine the sub-region selected (eg, temporarily) by the UE.

[0048] Different cell beams in a cell may have the same common channels and / or signals (e.g., the content of the common channels and / or signals for different cell beams is the same, which can reduce the SI reading frequency and save UE power). The transmission timing of the common channels and / or signals may be different for different cell beams (see Figure 4A-Figure 7). Different cell beams in a cell can share time / frequency radio resources for dedicated channels, which can improve the capacity of IoT cells on NTNs. A wireless communication device receives multiple common signals from a wireless communication node. The wireless communication node provides multiple cell beams. The wireless communication device determines an index of one of the multiple cell beams selected by the wireless communication device based on corresponding reception timings of one or more of the multiple common signals. The wireless communication node determines corresponding transmission timings of the multiple common signals, and sends the multiple common signals to the wireless communication device through the multiple cell beams according to the determined transmission timings.

[0049] In some embodiments, the UE may receive narrowband PSS (NPSS) / narrowband SSS (NSSS) of one or more cell beams and select the index of the cell beam with the strongest radio signal. In some embodiments, the wireless communication device selects the cell beam based on at least one of the following: the cell beam with the strongest radio quality value among multiple cell beams, or the cell beam with a radio quality value higher than a predefined radio quality threshold. The radio quality includes at least one of the following: reference signal received power (RSRP), reference signal received quality (RSRQ), or reference signal to interference noise power ratio (RS-SINR). The predefined radio quality threshold is at least one of the following: provided by the wireless communication node in the system information block, or predefined.

[0050] A cell beam can be mapped to several satellite beams. In some embodiments, the satellite beam is not perceptible to the UE. In some embodiments, the apparatus and method disclosed herein determine the transmission timing of common channels and / or signals for the cell beam, and the UE selects a physical random access channel (PRACH) resource based on the selected cell beam. In some embodiments, the multiple common signals include at least one of the following: a primary synchronization signal, a secondary synchronization signal, a physical broadcast channel signal, a master information block, and a system information block 1.

[0051] Figure 4A is a diagram showing an example mapping between a cell beam and narrowband PSS (NPSS) / narrowband SSS (NSSS) information (info) according to some embodiments of the present disclosure. In some embodiments, NB-IoT NPSS is transmitted in subframe 5 of each radio frame, and NSSS is transmitted in subframe 9 for frame structure type 1 or subframe 0 for frame structure type 2 in every two radio frames (e.g., satisfying system frame number (SFN) mod 2=0). Therefore, in some embodiments, the cell beam can be identified by sending / receiving NPSS / NSSS by SFN. For example, in Figure 4AIn some embodiments, the eNB transmits NPSS / NSSS for each cell beam in one or more corresponding SFNs, and if the UE receives NPSS / NSSS in one or more corresponding SFNs, it can be determined that it is in the corresponding cell beam. For example, the eNB transmits NPSS / NSSS for cell beam 1 in the first two SFNs, the eNB transmits NPSS / NSSS for cell beam 2 in the second two SFNs, the eNB transmits NPSS / NSSS for cell beam 3 in the third two SFNs, and so on. If the UE receives NPSS / NSSS in the first two SFNs, it can be known (e.g., determined) that it is in cell beam 1. If the UE receives NPSS / NSSS in the second two SFNs, it can be known that it is in cell beam 2. If the UE receives NPSS / NSSS in the third two SFNs, it can be known that it is in cell beam 3, and so on.

[0052] In some embodiments, if the UE receives NPSS / NSSS of multiple cell beams, the wireless communication device selects the cell beam based on at least one of the following: a cell beam having the strongest radio quality value among the multiple cell beams, or a cell beam having a radio quality value higher than a predefined radio quality threshold. The radio quality includes at least one of the following: reference signal received power (RSRP), reference signal received quality (RSRQ), or reference signal to interference noise power ratio (RS-SINR). The predefined radio quality threshold is at least one of the following: provided by the wireless communication node in a system information block, or predefined.

[0053] In some embodiments, the SFN of NPSS / NSSS for cell beam i satisfies the following condition (e.g., equation):

[0054] Floor(SFN / 2) mod 8+1 = i, where Floor(x) is equal to the largest integer less than x, and "A / B" means A divided by B.

[0055] In some embodiments, if there are m number of cell beams in a cell, the SFN of NPSS / NSSS for cell beam i satisfies the following conditions:

[0056] Floor(SFN / 2)mod m+1=i.

[0057] The SFN can be obtained from the Master Information Block (MIB) and the Physical Broadcast Channel (PBCH). For example, the 4 most significant bits (MSBs) of the SFN come from the parameter systemFrameNumber-MSB in the MIB, and the 6 least significant bits (LSBs) of the SFN are implicitly obtained by decoding the narrowband PBCH (NPBCH).

[0058] In some embodiments, the one or more common signals include a primary synchronization signal and a secondary synchronization signal. In some embodiments, the wireless communication device determines the reception timing of the primary synchronization signal and / or the reception timing of the secondary synchronization signal based on identifying during which system frames in a plurality of system frames the wireless communication device receives the primary synchronization signal and / or the secondary synchronization signal. In some embodiments, the wireless communication device determines the index of the cell beam selected by the wireless communication device based on the determined reception timing of the primary synchronization signal and / or the determined reception timing of the secondary synchronization signal. In some embodiments, the wireless communication node determines the transmission timing of the primary synchronization signal and / or the transmission timing of the secondary synchronization signal based on during which system frames in a plurality of system frames the wireless communication node sends the primary synchronization signal and / or the secondary synchronization signal, thereby causing the wireless communication device to select one of the plurality of cell beams based on the determined transmission timing of the primary synchronization signal and / or the determined transmission timing of the secondary synchronization signal.

[0059] Figure 4B is a diagram showing an example mapping between cell beams and PSSS / NSSS information according to some embodiments of the present disclosure. In some embodiments, NPSS / NSSS is transmitted / received several times in a cell beam (e.g., repeated with nsss-NumOccDiffPrecoders times or repeated with a maximum value of nsss-NumOccDiffPrecoders times) and then in the next beam. In some embodiments, nsss-NumOccDiffPrecoders indicates the number of consecutive NSSS opportunities for NSSS transmission using different precoders, and its enumerated (ENUMERATED) value range is {n1, n2, n4, n8}, with the value n1 corresponding to 1 opportunity, n2 corresponding to 2 opportunities, and so on.

[0060] like Figure 4BAs shown in , there are 8 cell beams in a cell, where nsss-NumOccDiffPrecoders=2. In some embodiments, the eNB sends NPSS / NSSS for cell beam 1 in the first four SFNs. If the UE receives NPSS / NSSS in the first four SFNs, it can be known that it is in cell beam 1. The eNB sends NPSS / NSSS for cell beam 2 in the second four SFNs. If the UE receives NPSS / NSSS in the second four SFNs, it can be known that it is in cell beam 2. The eNB sends NPSS / NSSS for cell beam 3 in the third four SFNs. If the UE receives NPSS / NSSS in the third four SFNs, it can be known that it is in cell beam 3, and so on. In some embodiments, if there are m number of cell beams in a cell, the SFN for NPSS / NSSS of cell beam i satisfies the following conditions:

[0061] Floor(SFN / 2)mod(m*nsss-NumOccDiffPrecoders)+1=i

[0062] In some embodiments, the wireless communication device also determines the reception timing of the primary synchronization signal and / or the reception timing of the secondary synchronization signal based on identifying the number of repeated receptions of the primary synchronization signal and / or the number of repeated receptions of the secondary synchronization signal for each of multiple cell beams.

[0063] Figure 4C is a diagram showing an example mapping between cell beams and PSSS / NSSS information according to some embodiments of the present disclosure. In some embodiments, only NPSS is used for cell beam selection. For example, NPSS is transmitted / received several times (e.g., "n" times, "n" is a positive integer) in one cell beam and then in the next beam.

[0064] like Figure 4C As shown in , there are 8 cell beams in one cell. In some embodiments, the eNB sends the NPSS of cell beam 1 in the first SFN. If the UE receives the NPSS in the first SFN, it can know that it is in cell beam 1. The eNB sends the NPSS of cell beam 2 in the second SFN. If the UE receives the NPSS in the second SFN, it can know that it is in cell beam 2. The eNB sends the NPSS of cell beam 3 in the third four SFNs, and if the UE receives the NPSS in the third SFN, it can know that it is in cell beam 3, and so on. In some embodiments, if there are m number of cell beams in one cell, the SFN for the NPSS of cell beam i satisfies the following conditions:

[0065] SFN mod m+1=i.

[0066] In some embodiments, the wireless communication device further determines a reception timing of only the primary synchronization signal based on identifying a number of repeated receptions of the primary synchronization signal for each of the plurality of cell beams.

[0067] Figure 4D is a diagram showing an example mapping between cell beams and PSSS / NSSS information according to some embodiments of the present disclosure. In some embodiments, only NSSS is used for cell beam selection. For example, NSSS is sent / received several times in one cell beam (e.g., repeated 1 times, repeated with nsss-NumOccDiffPrecoders times, or repeated with a maximum value of nsss-NumOccDiffPrecoders times), and then sent / received in the next beam.

[0068] like Figure 4D As shown in , there are 8 cell beams in one cell. In some embodiments, the eNB sends the NSSS of cell beam 1 in the first k number of SFNs carrying NSSS. If the UE receives the NSSS in the first k number of SFNs carrying NSSS, it can be known that it is in cell beam 1. The eNB sends the NSSS of cell beam 2 in the second k number of SFNs carrying NSSS. If the UE receives the NSSS in the second k number of SFNs carrying NSSS, it can be known that it is in cell beam 2. The eNB sends the NSSS of cell beam 3 in the third k number of SFNs carrying NSSS. If the UE receives the NSSS in the third k number of SFNs carrying NSSS, it can be known that it is in cell beam 3, and so on. In some embodiments, if there are m number of cell beams in one cell, and NSSS is transmitted / received k times (e.g., repeated once, repeated with nsss-NumOccDiffPrecoders times or repeated with a maximum value of nsss-NumOccDiffPrecoders times) in one cell beam, and then in the next beam, the SFN of NSSS for cell beam i satisfies the following conditions:

[0069] (SFN mod 2)=0 and floor(SFN / (k*2)) mod m+1=i.

[0070] In some embodiments, the wireless communication device further determines a reception timing of only the secondary synchronization signal based on identifying a number of repeated receptions of the secondary synchronization signal for each of the plurality of cell beams.

[0071] Figure 4Eis a diagram showing an example mapping between cell beams and PSS / SSS information according to some embodiments of the present disclosure. In some embodiments, for the cell beams, the PSS is sent / received sequentially in the SSS period. For example, the eNB sends the PSS / SSS of cell beam 1 in the first k number of SFNs carrying SSS. If the UE receives at least one of the PSS or SSS in the first k number of SFNs carrying SSS, it can be known that it is in cell beam 1. The eNB sends the PSS / SSS of cell beam 2 in the second k number of SFNs carrying SSS. If the UE receives at least one of the PSS or SSS in the second k number of SFNs carrying SSS, it can be known that it is in cell beam 2. The eNB sends the PSS / SSS of cell beam 3 in the third k number of SFNs carrying SSS. If the UE receives at least one of the PSS or SSS in the third k number of SFNs carrying SSS, it can be known that it is in cell beam 3, and so on.

[0072] In some embodiments, the method of mapping from PSS / SSS to cell beams can be used for eMTC. For example, for frequency division duplex (FDD) eMTC, in addition to the multimedia broadcast multicast service (MBMS) dedicated cell, the primary synchronization signal (PSS) and the secondary synchronization signal (SSS) are mapped to the last orthogonal frequency division multiplexing (OFDM) symbol in slots 0 and 10 in each SFN. Therefore, the cell beam can be identified by sending / receiving PSS / SSS by SFN.

[0073] like Figure 4E As shown, there are 8 cell beams in one cell. In some embodiments, the eNB sends PSS / SSS of cell beam 1 in the first two SFNs. If the UE receives PSS / SSS in the first two SFNs, it can be known that it is in cell beam 1. The eNB sends PSS / SSS of cell beam 2 in the second two SFNs. If the UE receives PSS / SSS in the second two SFNs, it can be known that it is in cell beam 2. The eNB sends PSS / SSS of cell beam 3 in the third two SFNs. If the UE receives PSS / SSS in the third two SFNs, it can be known that it is in cell beam 3, and so on. In some embodiments, if there are m number of cell beams in one cell, the SFN for PSS / SSS of cell beam i satisfies the following conditions:

[0074] SFN mod m+1=i.

[0075] In some embodiments, the cell beam is determined by the PSS and SSS. For example, based on the PSS, a group of cell beams can be determined, and based on the SSS, a (e.g., a subset) of cell beams in the group of cell beams can be determined. For example, if there are 8 cell beams, the SFN for the PSS and SSS in each cell beam is as follows:

[0076]

[0077]

[0078] Once the UE detects the PSS in SFN0, it can know that it is in cell beam 1 or cell beam 2. If the UE also detects the SSS in SFN0, it can be determined that it is in cell beam 1.

[0079] In some embodiments, the one or more common signals include a primary synchronization signal and a secondary synchronization signal. In some embodiments, the wireless communication device determines the reception timing of the primary synchronization signal and / or the reception timing of the secondary synchronization signal based on identifying during which system frames of a plurality of system frames corresponding to the periodicity of a plurality of cell beams the wireless communication device periodically receives the primary synchronization signal and / or the secondary synchronization signal. In some embodiments, the wireless communication device determines the index of the cell beam selected by the wireless communication device based on the determined reception timing of the primary synchronization signal and / or the determined reception timing of the secondary synchronization signal. In some embodiments, the periodicity of the cell beam includes one or more of the periodicities of the reception of the secondary synchronization signal, which is at least one of the following: provided by the wireless communication node in a physical broadcast channel, provided by the wireless communication node in a master information block, provided by the wireless communication node in a system information block, or a predefined time length. In some embodiments, the wireless communication node determines the transmission timing of the primary synchronization signal and / or the transmission timing of the secondary synchronization signal based on which system frames of multiple system frames corresponding to the period of transmission of the secondary synchronization signal the wireless communication node transmits the primary synchronization signal and / or the secondary synchronization signal, thereby causing the wireless communication device to select one of the multiple cell beams according to the determined transmission timing of the primary synchronization signal and / or the determined transmission timing of the secondary synchronization signal. In some embodiments, the periodicity of the cell beam can be the length of time that the primary synchronization signal and the secondary synchronization signal are continuously transmitted on one cell beam, or the time interval between two polling modes in which the primary synchronization signal and the secondary synchronization signal are sequentially transmitted on all cell beams. During the length of time that the primary synchronization signal and the secondary synchronization signal are continuously transmitted on one cell beam, the cell beam index is the same.

[0080] Figure 5Ais a diagram showing an example mapping between cell beams and master information block (MIB) information according to some embodiments of the present disclosure. In some embodiments, MasterInformationBlock-NB (MIB-NB) uses a fixed schedule with a periodicity of 640ms and repeats within 640ms. The first transmission of MIB-NB is scheduled in a radio frame with SFN mod 64=0, and the repetitions are arranged in 8 independently decodable blocks of 80ms duration. Therefore, the cell beam can be identified by sending / receiving the MIB by SFN.

[0081] For example, in Figure 5A In some embodiments, MIB is sent / received sequentially in cell beams according to SFN. For example, eNB sends MIB of cell beam 1 in the first SFN carrying MIB, and if UE receives MIB in the first SFN carrying MIB, it can be known that it is in cell beam 1. eNB sends MIB of cell beam 2 in the second SFN carrying MIB. If UE receives MIB in the second SFN carrying MIB, it can be known that it is in cell beam 2. eNB sends MIB of cell beam 3 in the third SFN carrying MIB. If UE receives MIB in the third SFN carrying MIB, it can be known that it is in cell beam 3, and so on.

[0082] In some embodiments, if the UE receives NPSS / NSSS / MIB for multiple cell beams, the wireless communication device selects the cell beam based on at least one of: a cell beam having the strongest radio quality value among the multiple cell beams, or a cell beam having a radio quality value higher than a predefined radio quality threshold. The radio quality includes at least one of: reference signal received power (RSRP), reference signal received quality (RSRQ), or reference signal to noise interference power ratio (RS-SINR). The predefined radio quality threshold is at least one of: provided by the wireless communication node in a system information block, or predefined.

[0083] In some embodiments, if there are m number of cell beams in a cell, the SFN of the MIB for cell beam i satisfies the following conditions:

[0084] SFN mod m+1=i.

[0085] In some embodiments, the one or more common signals include a master information block. In some embodiments, the wireless communication device determines a reception timing of the master information block based on identifying during which of a plurality of system frames the wireless communication device receives the master information block via a physical broadcast channel (PBCH). In some embodiments, the wireless communication device determines an index of a cell beam selected by the wireless communication device based on the determined reception timing. In some embodiments, the wireless communication node determines a transmission timing of the master information block based on during which of a plurality of system frames the wireless communication device transmits the master information block via a physical broadcast channel (PBCH), thereby causing the wireless communication device to select one of a plurality of cell beams based on the determined transmission timing.

[0086] Figure 5B is a diagram showing an example mapping between cell beams and MIB information according to some embodiments of the present disclosure. Figure 5B As shown, the MIB is sent / received in the cell beams sequentially every 80 milliseconds (ms) (e.g., MIB repetition duration in 8 independently decodable blocks). For example, the eNB sends the MIB for cell beam 1 during the first MIB repetition duration. If the UE receives the MIB during the MIB repetition duration, it can be known that it is in cell beam 1. The eNB sends the MIB for cell beam 2 during the second MIB repetition duration. If the UE receives the MIB during the second MIB repetition duration, it can be known that it is in cell beam 2. The eNB sends the MIB for cell beam 3 during the third MIB repetition duration. If the UE receives the MIB during the third MIB repetition duration, it can be known that it is in cell beam 3, and so on. In some embodiments, if there are m number of cell beams in a cell, the SFN of the MIB for cell beam i satisfies the following conditions:

[0087] Floor(SFN / 8)mod m+1=i.

[0088] Figure 5C is a diagram showing an example mapping between cell beams and MIB information according to some embodiments of the present disclosure. Figure 5CAs shown, the MIB is sent / received in the cell beams sequentially every 640ms (e.g., MIB period). For example, the eNB sends the MIB for cell beam 1 in the first MIB period. If the UE receives the MIB in the MIB period, it can be known that it is in cell beam 1. The eNB sends the MIB for cell beam 2 in the second MIB period. If the UE receives the MIB in the second MIB period, it can be known that it is in cell beam 2. The eNB sends the MIB for cell beam 3 in the third MIB period. If the UE receives the MIB in the third MIB period, it can be known that it is in cell beam 3, and so on. In some embodiments, if there are m number of cell beams in a cell, the SFN of the MIB for cell beam i satisfies the following conditions:

[0089] Floor(SFN / 64)mod m+1=i.

[0090] In some embodiments, the wireless communication device further determines the reception timing of the master information block based on identifying the reception periodicity of the master information block. In some embodiments, the periodicity is 640 milliseconds, 80 milliseconds, or 40 milliseconds.

[0091] In some embodiments, NPSS / NSSS is sent / received for each cell beam in turn in the MIB cycles. For example, the eNB sends NPSS / NSSS / MIB for cell beam 1 in the first MIB cycle. If the UE receives at least one of NPSS, NSSS, or MIB in the first MIB cycle, it can be known that it is in cell beam 1. The eNB sends NPSS / NSSS / MIB for cell beam 2 in the second MIB cycle. And if the UE receives at least one of NPSS, NSSS, or MIB in the second MIB cycle, it can be known that it is in cell beam 2. The eNB sends NPSS / NSSS / MIB for cell beam 3 in the third MIB cycle. If the UE receives at least one of NPSS, NSSS, or MIB in the third MIB cycle, it can be known that it is in cell beam 3, and so on.

[0092] Figure 5Dis a diagram showing an example mapping between cell beams and MIB information according to some embodiments of the present disclosure. In some embodiments, the method of mapping from MIB to cell beams can be used for eMTC. For example. For FDD eMTC, MIB uses a fixed schedule with a periodicity of 40ms and repeats within 40ms. The first transmission of MIB is scheduled in subframe #0 of a radio frame for SFN mod 4=0, and the scheduling is repeated in subframe #0 of all other radio frames. For FDD systems with a bandwidth greater than 1.4MHz and supporting UEs in BL UEs or CE, MIB transmission can be repeated in subframe #0 of the same radio frame and in subframe #9 of the previous radio frame of FDD. Therefore, the cell beam can be identified by sending / receiving MIB by SFN.

[0093] like Figure 5D As shown, there are 8 cell beams in one cell, and the MIB is sent / received in turn in the MIB repetition period for the cell beams. For example, the eNB sends the MIB for cell beam 1 in the first SFN. If the UE receives the MIB in the first SFN, it can be known that it is in cell beam 1. The eNB sends the MIB for cell beam 2 in the second SFN. If the UE receives the MIB in the second SFN, it can be known that it is in cell beam 2. The eNB sends the MIB for cell beam 3 in the third SFN. If the UE receives the MIB in the third SFN, it can be known that it is in cell beam 3, and so on. In some embodiments, if there are m number of cell beams in one cell, the SFN of the MIB for cell beam i satisfies the following conditions:

[0094] SFN mod m+1=i.

[0095] Figure 5E is a diagram showing an example mapping between cell beams and MIB information according to some embodiments of the present disclosure. Figure 5E As shown, there are 8 cell beams in one cell, and the MIB is sent / received in turn in the MIB scheduling periodicity for the cell beams. For example, the eNB sends the MIB for cell beam 1 in the first four SFNs. If the UE receives the MIB in the first four SFNs, it can be known that it is in cell beam 1. The eNB sends the MIB for cell beam 2 in the second four SFNs. If the UE receives the MIB in the second four SFNs, it can be known that it is in cell beam 2. The eNB sends the MIB for cell beam 3 in the third four SFNs. If the UE receives the MIB in the third four SFNs, it can be known that it is in cell beam 3, and so on. In some embodiments, if there are m number of cell beams in one cell, the SFN of the MIB for cell beam i satisfies the following conditions:

[0096] Floor(SFN / 4)mod m+1=i.

[0097] In some embodiments, PSS / SSS are all sent / received in the MIB periodicity for the cell beams in sequence. For example, the eNB sends PSS / SSS / MIB for cell beam 1 in the first MIB cycle. If the UE receives at least one of PSS, SSS, or MIB in the first MIB cycle, it can be known that it is in cell beam 1. The eNB sends PSS / SSS / MIB for cell beam 2 in the second MIB cycle. If the UE receives at least one of PSS, SSS, or MIB in the second MIB cycle, it can be known that it is in cell beam 2. The eNB sends PSS / SSS / MIB for cell beam 3 in the third MIB cycle. If the UE receives at least one of PSS, SSS, or MIB in the third MIB cycle, it can be known that it is in cell beam 3, and so on. In some embodiments, the periodicity of the cell beam can be the length of time that the primary synchronization signal, the secondary synchronization signal, and the master information block are continuously sent on one cell beam, or the time interval between two polling modes in which the primary synchronization signal, the secondary synchronization signal, and the master information block are sent in a circle in sequence on all cell beams. In some embodiments, the cell beam index is the same during the length of time that the primary synchronization signal and the secondary synchronization signal are continuously transmitted on one cell beam.

[0098] In some embodiments, the one or more common signals include a primary synchronization signal, a secondary synchronization signal, and a master information block. In some embodiments, the wireless communication device determines the reception timing of the primary synchronization signal, the reception timing of the secondary synchronization signal, and / or the reception timing of the master information block based on identifying during which system frames of a plurality of system frames corresponding to the period of the plurality of cell beams the wireless communication device receives the primary synchronization signal, the secondary synchronization signal, and / or the master information block. In some embodiments, the wireless communication device determines the index of the cell beam selected by the wireless communication device based on the determined reception timing of the primary synchronization signal, the determined reception timing of the secondary synchronization signal, and / or the determined reception timing of the master information block. In some embodiments, the periodicity of the cell beam includes one or more of the scheduling periods of the master information block, or one or more of the repetition periods of the master information block, which is at least one of the following: provided by wireless communication in a physical broadcast channel, provided by a wireless communication node in a master information block, provided by a wireless communication node in a system information block, or predefined. In some embodiments, the wireless communication node determines the transmission timing of the primary synchronization signal, the transmission timing of the secondary synchronization signal and / or the transmission timing of the main information block based on during which of the multiple system frames corresponding to the transmission period of the main information block the wireless communication node sends the primary synchronization signal, the secondary synchronization signal and / or the main information block, thereby causing the wireless communication device to select one of the multiple cell beams according to the determined transmission timing of the primary synchronization signal, the determined transmission timing of the secondary synchronization signal and / or the determined transmission timing of the main information block.

[0099] In some embodiments, the cell beam is determined by the PSS, SSS, and MIB. For example, based on the PSS, a group of cell beams can be determined, based on the SSS, a subset of the cell beams in the group of cell beams can be determined, and based on the SSS, a cell beam in the subset of cell beams (e.g., a second subset thereof) can be determined.

[0100] For example, if there are 8 cell beams, the SFN for PSS and SSS in each cell beam is as follows:

[0101]

[0102]

[0103] Once the UE detects PSS in SFN0, it knows that it is in cell beam 1, cell beam 2, cell beam 3 or cell beam 4. If the UE also detects SSS in SFN0, it can decide that it is in cell beam 1 or cell beam 2. If the UE also detects MIB in SFN0, it can decide that it is in cell beam 1.

[0104] In some embodiments, the index or identity of the cell beam is explicitly indicated in the PBCH or MIB. Once the PBCH or MIB is detected, the UE may decide to camp on the cell beam based on the index or identity of the cell beam contained in the PBCH or MIB.

[0105] In some embodiments, the number of multiple cell beams is explicitly indicated by at least one of a master information block or a system information block. In some embodiments, the one or more common signals include a physical broadcast channel, a master information block, and a system information block 1. In some embodiments, the index or identification of the cell beam is explicitly indicated by at least one of a physical broadcast channel, a master information block, or a system information block 1. In some embodiments, the wireless communication device determines the index of the cell beam selected by the wireless communication device based on the index or identification. In some embodiments, the wireless communication node explicitly indicates the number of multiple cell beams in at least one of a master information block or a system information block. In some embodiments, the wireless communication node explicitly indicates the index or identification of one of the multiple cell beams in at least one of a physical broadcast channel, a master information block, or a system information block 1, thereby causing the wireless communication device to select the cell beam based on the index or identification.

[0106] In some embodiments, the periodicity of the cell beam is explicitly indicated in the PBCH or MIB.Once PSS / SSS, PBCH or MIB is detected, the UE can decide to camp on the cell beam based on the periodic sequence of the detected PSS / SSS, PBCH or MIB.

[0107] In some embodiments, the one or more common signals include a physical broadcast channel, a master information block, and a system information block 1. In some embodiments, the periodicity of the cell beam is explicitly indicated by at least one of the physical broadcast channel, the master information block, or the system information block 1. In some embodiments, the wireless communication device determines the index of the cell beam selected by the wireless communication device based on the periodicity. In some embodiments, the wireless communication node explicitly indicates the periodicity of the cell beam in at least one of the physical broadcast channel, the master information block, or the system information block 1, thereby causing the wireless communication device to select the cell beam based on the periodicity.

[0108] Fig. 6Ais a diagram showing an example mapping between cell beams and system information block 1 (SIB1) information according to some embodiments of the present disclosure. In some embodiments, SystemInformationBlockType1-NB (SIB1-NB) uses a fixed schedule with a period of 2560ms, and the repetitions made at equal intervals within 2560ms are indicated by the schedulingInfoSIB1 field in MIB-NB. The number of SIB1 repetitions can be [4, 8, 16], and the starting SFN of the SIB1 repetition is based on the PCI and schedulingInfoSIB1. For example, the value range of schedulingInfoSIB1 is an integer (0...15). The number of NPDSCH repetitions (j) for carrying SystemInformationBlockType1-NB, FDD is determined as follows:

[0109] Value of schedulingInfoSIB1 Number of NPDSCH repetitions 0 4 1 8 2 16 3 4 4 8 5 16 6 4 7 8 8 16 9 4 10 8 11 16 12-15 Reserved

[0110] The starting radio frame (k) for the first transmission of the NPDSCH carrying SystemInformationBlockType1-NB, FDD is determined as follows:

[0111]

[0112]

[0113] Therefore, the cell beam can be identified by SFN sending / receiving SIB in the SIB1 scheduling period (e.g., 2560ms). Fig. 6A In some embodiments, a cell has 8 cell beams, and the number of SIB1 repetitions within 2560ms is 16. In some embodiments, SIB1 is sent / received in the cell beams sequentially in the SIB1 scheduling periodicity according to the SIB1 repetition period. For example, the eNB sends SIB1 of cell beam 1 in the first SIB1 repetition period. If the UE receives SIB1 in the first SIB1 repetition period, it can be known that it is in cell beam 1. The eNB sends cell beam 2 in the second SIB1 repetition period. If the UE receives SIB1 in the second SIB1 repetition period, it can be known that it is in cell beam 2. The eNB sends SIB1 of cell beam 3 in the third SIB1 repetition period. If the UE receives SIB1 in the third SIB1 repetition period, it can be known that it is in cell beam 3, and so on.

[0114] In some embodiments, if the UE receives NPSS / NSSS / MIB / SIB1 for multiple cell beams, the wireless communication device selects the cell beam based on at least one of the following: a cell beam having the strongest radio quality value among the multiple cell beams, or a cell beam having a radio quality value above a predefined radio quality threshold. The radio quality includes at least one of the following: reference signal received power (RSRP), reference signal received quality (RSRQ), or reference signal-to-interference noise power ratio (RS-SINR). The predefined radio quality threshold is at least one of the following: provided by the wireless communication node in a system information block, or predefined.

[0115] In some embodiments, if there are m number of cell beams in a cell and the number of NPDSCH repetitions for SIB1 is j, then the SFN for SIB1 of cell beam i satisfies one of the following conditions:

[0116] Floor((SFN mod 256) / j)mod m+1=i,

[0117] Floor(SFN / j)mod m+1=i, or

[0118] SFN = 256*k + starting radio frame number repeated for SystemInformationBlockType1-NB (value from the table above) + (256 / j)*(j / m*K+i-1),

[0119] Where K is a non-negative integer and m*K is less than j.

[0120] In some embodiments, the one or more common signals include system information block 1. In some embodiments, the wireless communication device determines a reception timing of system information block 1 based on identifying during which of the plurality of system frames the wireless communication device receives system information block 1. In some embodiments, the wireless communication device determines an index of a cell beam selected by the wireless communication device according to the determined reception timing. In some embodiments, the wireless communication node determines a transmission timing of system information block 1 based on during which of the plurality of system frames the wireless communication node transmits system information block 1, thereby causing the wireless communication device to select one of the plurality of cell beams according to the determined transmission timing.

[0121] Figure 6Bis a diagram showing an example mapping between cell beams and SIB information according to some embodiments of the present disclosure. In some embodiments, the number of cell beams is greater than the number of repetitions (j) of the narrowband PDSCH (NPDSCH) carrying SystemInformationBlockType1-NB in ​​one SIB1 scheduling period (e.g., 2560ms), and the cell beam can be identified by SFN transmission / reception of SIB1 within the SFN period (e.g., 10240ms).

[0122] like Figure 6B As shown, there are 8 cell beams in a cell, and the number of SIB1 repetitions within 2560ms is 4. In some embodiments, SIB1 is sent / received in the SFN period (10240ms) for the cell beams in sequence according to the SIB1 repetition period. For example, the eNB sends SIB1 for cell beam 1 in the first SIB1 repetition period. If the UE receives SIB1 in the first SIB1 repetition period, it can be known that it is in cell beam 1. The eNB sends SIB1 for cell beam 2 in the second SIB1 repetition period. If the UE receives SIB1 in the second SIB1 repetition period, it can be known that it is in cell beam 2. The eNB sends SIB1 for cell beam 3 in the third SIB1 repetition period. If the UE receives SIB1 in the third SIB1 repetition period, it can be known that it is in cell beam 3, and so on. In some embodiments, if there are m number of cell beams in a cell, the number of NPDSCH repetitions for SIB1 is j, then the SFN for SIB1 of cell beam i satisfies the following conditions:

[0123] Floor(SFN / j)mod m+1=i, or

[0124] SFN = starting radio frame number for SystemInformationBlockType1-NB repetition (value from the table above) + (256 / j)*(4*j*K / m+i-1),

[0125] Wherein K is a non-negative integer and 4*j*K is greater than m.

[0126] In some embodiments, NPSS / NSSS / MIB / SIB1 is sent / received in sequence in the SIB1 repetition period for the cell beam. For example, the eNB sends NPSS / NSSS / MIB / SIB1 of cell beam 1 in the first SIB1 repetition period. If the UE receives at least one of NPSS, NSSS, MIB, or SIB1 in the first SIB1 repetition period, it can be known that it is in cell beam 1. The eNB sends NPSS / NSSS / MIB / SIB1 of cell beam 2 in the second SIB1 repetition period. If the UE receives at least one of NPSS, NSSS, MIB, or SIB1 in the second SIB1 repetition period, it can be known that it is in cell beam 2. The eNB sends NPSS / NSSS / MIB / SIB1 of cell beam 3 in the third SIB1 repetition period. If the UE receives at least one of NPSS, NSSS, MIB, or SIB1 in the third SIB1 repetition period, it can be known that it is in cell beam 3, and so on. In some embodiments, the periodicity of the cell beam may be the length of time that the primary synchronization signal, the secondary synchronization signal, the master information block and the system information block 1 are continuously transmitted on one cell beam, or the time interval between two polling modes in which the primary synchronization signal, the secondary synchronization signal, the master information block and the system information block 1 are sequentially transmitted on all cell beams in a circular manner. In some embodiments, during the length of time that the primary synchronization signal and the secondary synchronization signal are continuously transmitted on one cell beam, the cell beam index is the same.

[0127] In some embodiments, the one or more common signals include a primary synchronization signal, a secondary synchronization signal, a master information block, and a system information block 1. In some embodiments, the wireless communication device determines the reception timing of the primary synchronization signal, the reception timing of the secondary synchronization signal, the reception timing of the master information block, and / or the reception timing of the system information block 1 based on identifying the system frame number of the periodically received primary synchronization signal, the secondary synchronization signal, the master information block, and / or the system information block 1. In some embodiments, the wireless communication device determines the index of the cell beam selected by the wireless communication device according to the determined reception timing of the primary synchronization signal, the determined reception timing of the secondary synchronization signal, the determined reception timing of the master information block, and / or the determined reception timing of the system information block 1. In some embodiments, the periodicity of the cell beam includes one or more of the scheduling period of the system information block 1 or the repetition period of the system information block 1, which is at least one of the following: provided by the wireless communication node in the physical broadcast channel, provided by the wireless communication node in the master information block, provided by the wireless communication node in the system information block, or predefined. In some embodiments, the wireless communication node determines the transmission timing of the primary synchronization signal, the transmission timing of the secondary synchronization signal, the transmission timing of the primary information block and / or the transmission timing of the system information block 1 based on which system frames among multiple system frames corresponding to the period of the primary information block the wireless communication node sends the primary synchronization information, the secondary synchronization information, the primary information block and / or the system information block, thereby causing the wireless communication device to select one of the multiple cell beams according to the determined transmission timing of the primary synchronization signal, the determined reception timing of the secondary synchronization signal, the determined transmission timing of the primary information block and / or the determined transmission timing of the system information block.

[0128] In some embodiments, if the number of cell beams is greater than the number of repetitions (j) of the NPDSCH carrying SystemInformationBlockType1-NB in ​​one SFN cycle (e.g., 10240ms), the cell beam can be identified by SFN transmission / reception of SIBs in a super SFN (H-SFN) cycle (e.g., x*10240ms, x=1…1024). For example, SIB1 is transmitted / received in the cell beam in each SIB1 repetition period in the H-SFN periodicity (1024*10240ms) in sequence. For example, the eNB transmits SIB1 of cell beam 1 in the first SIB1 repetition period. If the UE receives SIB1 in the first SIB1 repetition period, it can be known that it is in cell beam 1. The eNB transmits SIB1 of cell beam 2 in the second SIB1 repetition period. If the UE receives SIB1 in the second SIB1 repetition period, it can be known that it is in cell beam 2. The eNB transmits SIB1 of cell beam 3 in the third SIB1 repetition period. If the UE receives SIB1 in the third SIB1 repetition period, it can be known that it is in cell beam 3, and so on. In some embodiments, if there are m number of cell beams in a cell and the number of NPDSCH repetitions for SIB1 is j, then the SFN of SIB1 for cell beam i satisfies the following conditions:

[0129] Floor((H-SFN*1024+SFN) / j) mod m+1=i.

[0130] Figure 6Cis a diagram showing an example mapping between cell beams and SIB information according to some embodiments of the present disclosure. In some embodiments, the method of mapping from SIB1 to cell beams can be used for eMTC. For example, for FDD eMTC, SystemInformationBlockType1 uses a fixed schedule with a periodicity of 80ms and makes repetitions within 80ms. The first transmission of SystemInformationBlockType1 is scheduled in subframe #5 of a radio frame for SFN mod 8=0, and repetitions are scheduled in subframe #5 of all other radio frames for SFN mod 2=0. For BL UEs or UEs in CE, MIB is applied, which can provide additional repetitions, and for SIB1 and further SI messages, separate messages are used, which are scheduled independently and may have different contents. A separate instance of SIB1 is named SystemInformationBlockType1-BR. SystemInformationBlockType1-BR uses a schedule with a periodicity of 80ms. The transport block size (TBS) and repetition (j) in 80ms for SystemInformationBlockType1-BR are indicated via schedulingInfoSIB1-BR in the MIB or optionally in the RRCConnectionReconfiguration message including MobilityControlInfo. The value range of scheduleInfoSIB1-BR is an integer (0...31). The number of PDSCH repetitions carrying SystemInformationBlockType1-BR for BL / CE UEs is as follows:

[0131]

[0132]

[0133] Therefore, the cell beam can be identified through SFN transmission / reception of SIB1.

[0134] like Figure 6CAs shown, a cell has 8 cell beams, and SIB1 is sent / received in the SIB1 scheduling periodicity for the cell beams in turn. For example, the eNB sends SIB1 for cell beam 1 in the first MIB. If the UE receives SIB1 in the first SIB1 scheduling period, it can be known that it is in cell beam 1. The eNB sends SIB1 for cell beam 2 in the second SIB1 scheduling period. If the UE receives SIB1 in the second SIB1 scheduling period, it can be known that it is in cell beam 2. The eNB sends SIB1 for cell beam 3 in the third SIB1 scheduling period. If the UE receives SIB1 in the third SIB1 scheduling period, it can be known that it is in cell beam 3, and so on. In some embodiments, if there are m number of cell beams in a cell, the SFN of SIB1 for cell beam i satisfies the following conditions:

[0135] Floor(SFN / 8)mod m+1=i.

[0136] Fig.6D is a diagram showing an example mapping between cell beams and SIB information according to some embodiments of the present disclosure. In some embodiments, method mapping may be used for eMTC. Fig.6D As shown, a cell has 8 cell beams, and SIB1 is sent / received in the SIB1 repetition period for the cell beams in sequence. For example, the eNB sends SIB1 for cell beam 1 in the first SIB1 repetition period. If the UE receives SIB1 in the first SIB1 repetition period, it can be known that it is in cell beam 1. The eNB sends SIB1 for cell beam 2 in the second SIB1 repetition period. If the UE receives SIB1 in the second SIB1 repetition period, it can be known that it is in cell beam 2. The eNB sends SIB1 for cell beam 3 in the third SIB1 repetition period. If the UE receives SIB1 in the third SIB1 repetition period, it can be known that it is in cell beam 3, and so on. In some embodiments, if there are m number of cell beams in a cell, the SFN of SIB1 for cell beam i satisfies the following conditions if j=8:

[0137] Mod(SFN,8)modm+1=i.

[0138] If there are m number of cell beams in a cell, the subframe and SFN of SIB1 for cell beam i satisfy the following conditions if j=4:

[0139] Mod(SFN, 2) = 0 and Mod(SFN, 8) mod m+1 = i.

[0140] If there are m number of cell beams in a cell, the subframe and SFN of SIB1 for cell beam i satisfy the following conditions if j=16:

[0141] Mod(SFN,8)mod m+1=floor(i / 2).

[0142] In some embodiments, the cell beam is determined by PSS, SSS, MIB and SIB1. For example, based on PSS, set 1 of cell beams can be determined, based on SSS, cell beam subset 1-1 in cell beam set 1 can be determined, based on MIB, cell beam subset 1-1-1 in cell beam subset 1-1 can be determined, and based on SIB, cell beams in subset 1-1-1-1 in cell beam subset 1-1-1 can be determined. For example, if there are 16 cell beams, the SFNs for PSS and SSS in each cell beam are as follows:

[0143]

[0144]

[0145] Once the UE detects PSS in SFN0, it can know that it is in cell beam 1, cell beam 2, cell beam 3, cell beam 4, cell beam 5, cell beam 6, cell beam 7, or cell beam 8. If the UE also detects SSS in SFN0, it can decide that it is in cell beam 1, cell beam 2, cell beam 3, or cell beam 4. If the UE also detects MIB in SFN0, it can decide that it is in cell beam 1 or cell beam 2. If the UE also detects SIB1 in SFN0, it can finally decide that it is in cell beam 1.

[0146] In some embodiments, the index or identity of the cell beam is explicitly indicated in SIB1. Once SIB1 is detected, the UE can decide to camp on the cell beam based on the index or identity of the cell beam contained in SIB1. In some embodiments, the periodicity of the cell beam is explicitly indicated in SIB1. Once PSS / SSS, PBCH / MIB or SIB1 is detected, the UE can decide to camp on the cell beam based on the periodic sequence of PSS / SSS, PBCH, MIB or SIB1.

[0147] Figure 7 is a diagram showing an example mapping between cell beams and narrowband physical random access channel (NPRACH) resources according to some embodiments of the present disclosure. Figure 7The NPRACH resource configuration for each cell beam is shown. In some embodiments, different cell beams have different NPRACH resources (e.g., the time and / or frequency configuration of the preamble / PDCCH is different for different cell beams in a cell). Therefore, the eNB can know which cell beams the UE is in based on the NPRACH resources (e.g., preamble) selected and used by the UE.

[0148] For example, the UE is based on the SFN ( Figure 4A-4E ), SFN carrying NSSS ( Figure 4A-4E ), SFN carrying MIB ( Figure 5A-5E ), SFN carrying SIB1( Figure 6A-6D ) to determine the cell beam in which to reside. The UE selects the NPRACH resource of the selected cell beam and sends the NPRACH preamble in the selected cell beam. The eNB can know the cell beam selected by the UE based on the preamble code sent by the UE and schedule radio resources in the cell beam selected by the UE. The number of cell beams in a cell can be explicitly indicated (for example, explicitly indicated in the MIB or SIB1) or implicitly indicated (for example, based on the number of PRACH resource sets in SIB2, and one PRACH resource set corresponds to one cell beam).

[0149] In some embodiments, the one or more common signals include a physical broadcast channel, and wherein different scrambling codes of the physical broadcast channel are used for multiple cell beams. In some embodiments, the wireless communication device determines an index of a cell beam selected by the wireless communication device based on one of the scrambling codes of the physical broadcast channel. In some embodiments, the number of multiple cell beams is implicitly indicated by multiple physical random access channel resource sets in a system information block. In some embodiments, the wireless communication device selects a physical random access channel resource corresponding to the selected cell beam. In some embodiments, the wireless communication device sends a preamble to the wireless communication node using the selected physical random access channel resource.

[0150] Figure 8 8 is a flow chart illustrating a method 800 for determining a cell beam according to some embodiments of the present disclosure. Figure 1-Figure 7 In some embodiments, the method 800 may be performed by a wireless communication device (eg, UE, UE 104). Depending on the embodiment, additional, fewer, or different operations may be performed in the method 800.

[0151] The wireless communication device receives a plurality of common signals from a wireless communication node, wherein the wireless communication node provides a plurality of cell beams (802). The wireless communication device determines an index of one of the plurality of cell beams selected by the wireless communication device based on corresponding reception timings of one or more of the plurality of common signals (804).

[0152] Fig. 9 is a flow chart illustrating a method 900 for transmitting a common signal according to some embodiments of the present disclosure. Figure 1-Figure 7 In some embodiments, the method 900 may be performed by a wireless communication node (eg, eNB, BS 102). Depending on the embodiment, additional, fewer, or different operations may be performed in the method 900.

[0153] The wireless communication node determines corresponding transmission opportunities of a plurality of common signals (902). The wireless communication node transmits the plurality of common signals to the wireless communication device on a plurality of cell beams according to the determined transmission opportunities (904).

[0154] Although various embodiments of the present solution have been described above, it should be understood that they are presented by way of example only rather than by way of limitation. Similarly, various figures may depict example architectures or configurations, which are provided to enable those of ordinary skill in the art to understand the example features and functions of the present solution. However, these personnel will understand that the present solution is not limited to the illustrated example architectures or configurations, but may be implemented using a variety of alternative architectures and configurations. In addition, as will be understood by those of ordinary skill in the art, one or more features of an embodiment may be combined with one or more features of another embodiment described herein. Therefore, the breadth and scope of the present disclosure should not be limited by any of the above-described illustrative embodiments.

[0155] It should also be understood that any reference to an element herein using names such as "first," "second," etc. does not generally limit the number or order of those elements. Rather, these names may be used herein as a convenient means of distinguishing between two or more elements or instances of an element. Thus, a reference to a first and a second element does not mean that only two elements are employed, or that the first element must precede the second element in some manner.

[0156] In addition, those of ordinary skill in the art will appreciate that information and signals may be represented using any of a variety of different technologies and techniques. For example, data, instructions, commands, information, signals, bits, and symbols that may be referenced in the above description may be represented by voltage, current, electromagnetic waves, magnetic fields or magnetic particles, optical fields or optical particles, or any combination thereof.

[0157] It will also be understood by those of ordinary skill in the art that any of the various illustrative logical blocks, modules, processors, devices, circuits, methods, and functions described in conjunction with the aspects disclosed herein may be implemented by electronic hardware (e.g., digital implementation, analog implementation, or a combination thereof), firmware, various forms of programs or design codes in conjunction with instructions (for convenience, referred to herein as "software" or "software modules"), or any combination of these technologies. In order to clearly illustrate the interchangeability of such hardware, firmware, and software, various illustrative components, blocks, modules, circuits, and steps have been generally described above in terms of their functionality. Whether such functionality is implemented as hardware, firmware, or software, or a combination of these technologies, depends on the specific application and the design constraints imposed on the overall system. A skilled technician may implement the described functionality in various ways for each specific application, but such implementation decisions do not result in a departure from the scope of this disclosure.

[0158] In addition, it will be understood by those of ordinary skill in the art that the various illustrative logic blocks, modules, devices, components, and circuits described herein may be implemented within or performed by an integrated circuit (IC) including 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 device, or any combination thereof. The logic blocks, modules, and circuits may also include antennas and / or transceivers for communicating with various components within a network or within a device. The general purpose processor may be a microprocessor, but in an alternative, the processor may be any conventional processor, controller, or state machine. The processor may also be implemented as a combination of computing devices for performing the functions described herein, for example, a combination of a DSP and a microprocessor, a combination of multiple microprocessors, a combination of one or more microprocessors combined with a DSP core, or a combination of any other suitable configuration.

[0159] If implemented in software, the function can be stored as one or more instructions or codes on a computer-readable medium. Therefore, the steps of the method or algorithm disclosed herein can be implemented as software stored on a computer-readable medium. Computer-readable media include both computer storage media and communication media, and communication media include any medium that enables a computer program or code to be transferred from one place to another. The storage medium can be any available medium that can be accessed by a computer. By way of example and not limitation, such computer-readable media can include: RAM, ROM, EEPROM, CD-ROM or other optical disk storage, disk storage or other magnetic storage device, or any other medium that can be used to store the desired program code in the form of instructions or data structures and can be accessed by a computer.

[0160] In this document, the term "module" as used herein refers to software, firmware, hardware, and any combination of these elements for performing the associated functions described herein. In addition, for the purpose of discussion, various modules are described as discrete modules; however, it will be apparent to one of ordinary skill in the art that two or more modules can be combined to form a single module that performs associated functions according to embodiments of the present solution.

[0161] In addition, in the embodiment of the present solution, memory or other storage devices and communication components can be adopted.It will be understood that, for the sake of clarity, the above description has described the embodiment of the present solution with reference to different functional units and processors.However, it will be apparent that any suitable functional distribution between different functional units, processing logic elements or domains can be used without departing from the present solution.For example, the functionality to be performed by a separate processing logic element or controller can be performed by the same processing logic element or controller.Therefore, the reference to a specific functional unit is only a reference to a suitable device for providing the functionality, rather than an indication of a strict logical or physical structure or organization.

[0162] Various modifications to the embodiments described in the present disclosure will be apparent to those skilled in the art, and the general principles defined herein may be applied to other embodiments without departing from the scope of the present disclosure. Therefore, the present disclosure is not intended to be limited to the embodiments shown herein, but should be given the broadest scope consistent with the novel features and principles disclosed herein, as set forth in the claims below.

Claims

1. A wireless communication method, comprising: Receiving, by a wireless communication device, a plurality of common signals from a wireless communication node, wherein the wireless communication node provides a plurality of cell beams, and the plurality of common signals include a primary synchronization signal and / or a secondary synchronization signal; selecting, by the wireless communication device, one of the plurality of cell beams based on a corresponding reception opportunity corresponding to a number of receptions of one or more of the plurality of common signals; and determining, by the wireless communication device, an index of one of a plurality of cell beams selected by the wireless communication device based on corresponding reception timings of one or more of the plurality of common signals, The step of determining, by the wireless communication device based on corresponding reception timings of one or more of the plurality of common signals, an index of one of the plurality of cell beams selected by the wireless communication device comprises: The wireless communication device determines, based on identification of during which of a plurality of system frames the wireless communication device receives the primary synchronization signal and / or the secondary synchronization signal, a reception timing of the primary synchronization signal and / or a reception timing of the secondary synchronization signal, wherein the identification corresponds to a periodicity of reception of the primary synchronization signal and / or the secondary synchronization signal on a cell beam in a time domain; and The wireless communication device determines an index of a cell beam selected by the wireless communication device according to the determined reception timing of the primary synchronization signal and / or the determined reception timing of the secondary synchronization signal.

2. The wireless communication method according to claim 1, wherein: The plurality of common signals further include at least one of the following: a physical broadcast channel signal, a master information block and a system information block 1.

3. The wireless communication method according to claim 1, further comprising: The reception timing of the primary synchronization signal and / or the reception timing of the secondary synchronization signal is further determined based on identifying the number of repeated receptions of the primary synchronization signal and / or the number of repeated receptions of the secondary synchronization signal for each of the multiple cell beams.

4. The wireless communication method according to claim 1, further comprising: A reception timing of only the primary synchronization signal is determined further based on identifying the number of repetition receptions of the primary synchronization signal for each of the plurality of cell beams.

5. The wireless communication method according to claim 1, further comprising: A reception timing of only the secondary synchronization signal is determined further based on identifying the number of repetition receptions of the secondary synchronization signal for each of the plurality of cell beams.

6. The wireless communication method according to claim 1, further comprising: The wireless communication device determines the reception timing of the primary synchronization signal and / or the reception timing of the secondary synchronization signal based on identification of during which system frames of a plurality of system frames the wireless communication device receives the primary synchronization signal and / or the secondary synchronization signal, wherein the identification corresponds to the periodicity of reception of the primary synchronization signal on a cell beam in a time domain, the periodicity of reception of the secondary synchronization signal, and / or the periodicity of reception of a master information block; and The wireless communication device determines an index of a cell beam selected by the wireless communication device according to the determined reception timing of the primary synchronization signal and / or the determined reception timing of the secondary synchronization signal.

7. The wireless communication method according to claim 6, wherein: The periodicity of the cell beam includes one or more of the periodicities of reception of the secondary synchronization signal, which is at least one of the following: provided by the wireless communication node in a physical broadcast channel, provided by the wireless communication node in a master information block, provided by the wireless communication node in a system information block, or a predefined time length.

8. The wireless communication method according to claim 1, wherein: The one or more common signals include a master information block, and the wireless communication method further includes: Determining, by the wireless communication device, a reception timing of the master information block based on identifying during which system frames of a plurality of system frames the wireless communication device receives the master information block via a physical broadcast channel (PBCH); and The wireless communication device determines an index of a cell beam selected by the wireless communication device according to the determined reception timing.

9. The wireless communication method according to claim 8, further comprising: The reception timing of the master information block is determined further based on identifying the periodicity of the reception of the master information block.

10. The wireless communication method according to claim 9, wherein: The periodicity is 640 milliseconds, 80 milliseconds, or 40 milliseconds.

11. The wireless communication method according to claim 1, wherein: The one or more common signals further include a master information block, and the wireless communication method further includes: The wireless communication device determines a reception timing of the primary synchronization signal, a reception timing of the secondary synchronization signal, and / or a reception timing of the master information block based on identifying during which system frames of a plurality of system frames the wireless communication device receives the primary synchronization signal, the secondary synchronization signal, and / or the master information block, wherein the system frames correspond to periods of the plurality of cell beams; and The wireless communication device determines an index of a cell beam selected by the wireless communication device according to the determined reception timing of the primary synchronization signal, the determined reception timing of the secondary synchronization signal and / or the determined reception timing of the master information block.

12. The wireless communication method according to claim 11, wherein: The periodicity of the cell beam includes one or more of the scheduling periods of the master information block, or one or more of the repetition periods of the master information block, which is at least one of the following: provided by the wireless communication node in a physical broadcast channel, provided by the wireless communication node in the master information block, provided by the wireless communication node in a system information block, or predefined.

13. The wireless communication method according to claim 1, wherein: The one or more common signals further include a system information block, and the wireless communication method further includes: determining, by the wireless communication device, a reception timing of the system information block 1 based on identifying during which system frames of a plurality of system frames the wireless communication device receives the system information block 1; and The wireless communication device determines an index of a cell beam selected by the wireless communication device according to the determined reception timing.

14. The wireless communication method according to claim 1, wherein: The one or more common signals further include a master information block and a system information block 1, and the wireless communication method further includes: The wireless communication device determines a reception timing of the primary synchronization signal, a reception timing of the secondary synchronization signal, a reception timing of the master information block, and / or a reception timing of the system information block 1 based on identifying during which system frames of a plurality of system frames the wireless communication device receives the primary synchronization signal, the secondary synchronization signal, the master information block, and / or the system information block 1, wherein the system frames correspond to periods of the plurality of cell beams; and The wireless communication device determines the index of the cell beam selected by the wireless communication device based on the determined reception timing of the primary synchronization signal, the determined reception timing of the secondary synchronization signal, the determined reception timing of the main information block, and / or the determined reception timing of the system information block 1.

15. The wireless communication method according to claim 14, wherein: The periodicity of the cell beam includes one or more scheduling periods for receiving the system information block 1, or one or more repetition periods of the system information block 1, which is at least one of the following: provided by the wireless communication node in the physical broadcast channel, provided by the wireless communication node in the master information block, provided by the wireless communication node in the system information block, or predefined.

16. The wireless communication method according to claim 1, wherein: The number of the multiple cell beams is explicitly indicated by at least one of a master information block or a system information block.

17. The wireless communication method according to claim 1, wherein: The one or more common signals also include a physical broadcast channel, a master information block and a system information block 1, and wherein the index or identification of the cell beam is explicitly indicated by at least one of the physical broadcast channel, the master information block or the system information block 1, and the method further includes: the wireless communication device determines the index of the cell beam selected by the wireless communication device based on the index or identification.

18. The wireless communication method according to claim 1, wherein: The one or more common signals also include a physical broadcast channel, a master information block and a system information block 1, and wherein the periodicity of the cell beam is explicitly indicated by at least one of the physical broadcast channel, the master information block or the system information block 1, and the method further includes: the wireless communication device determines, according to the periodicity, an index of the cell beam selected by the wireless communication device.

19. The wireless communication method according to claim 1, wherein: The one or more common signals also include a physical broadcast channel, and wherein different scrambling codes of the physical broadcast channel are used for the multiple cell beams, and the method also includes: the wireless communication device determines the index of the cell beam selected by the wireless communication device based on one of the scrambling codes of the physical broadcast channel.

20. The wireless communication method according to claim 1, wherein: The number of the multiple cell beams is implicitly indicated by the number of physical random access channel resource sets in the system information block.

21. The wireless communication method according to claim 1, further comprising: The wireless communication device selects a physical random access channel resource corresponding to the selected cell beam; and The wireless communication device sends a preamble to the wireless communication node using the selected physical random access channel resources.

22. The wireless communication method according to claim 1 further includes selecting the cell beam by the wireless communication device based on at least one of the following: a cell beam having the strongest radio quality value among the multiple cell beams, or a cell beam having a radio quality value above a predefined radio quality threshold, wherein the radio quality includes at least one of the following: reference signal received power RSRP, reference signal received quality RSRQ, or reference signal to interference noise power ratio RS-SINR, and wherein the predefined radio quality threshold is at least one of the following: provided by the wireless communication node in a system information block, or predefined.

23. A wireless communication method, comprising: Determining, by the wireless communication node, corresponding transmission timings of the plurality of common signals; and The wireless communication node sends the multiple common signals to the wireless communication device through multiple cell beams according to the determined transmission opportunity, wherein the multiple common signals include a primary synchronization signal and / or a secondary synchronization signal. The wireless communication node determines a transmission timing of the primary synchronization signal and / or a transmission timing of the secondary synchronization signal based on system frames during which the wireless communication node transmits the primary synchronization signal and / or the secondary synchronization signal among a plurality of system frames, thereby causing the wireless communication device to select an index of one of the plurality of cell beams according to the determined transmission timing of the primary synchronization signal and / or the determined transmission timing of the secondary synchronization signal, One of the multiple cell beams is selected by the wireless communication device based on a corresponding reception timing corresponding to the number of receptions of one or more of the multiple common signals, and an index of one of the multiple cell beams selected by the wireless communication device is determined by the wireless communication device based on the corresponding reception timing of one or more of the multiple common signals.

24. The wireless communication method according to claim 23, wherein: The plurality of common signals further include at least one of the following: a physical broadcast channel signal, a master information block and a system information block 1.

25. The wireless communication method according to claim 23, further comprising: The wireless communication device determines the transmission timing of the primary synchronization signal and / or the transmission timing of the secondary synchronization signal based on which system frames among a plurality of system frames the wireless communication node sends the primary synchronization signal and / or the secondary synchronization signal, thereby causing the wireless communication device to select one of the plurality of cell beams according to the determined transmission timing of the primary synchronization signal and / or the determined transmission timing of the secondary synchronization signal, wherein the system frame corresponds to the period of transmission of the secondary synchronization signal.

26. The wireless communication method according to claim 23, wherein: The one or more common signals further include a master information block, and the wireless communication method further includes: The wireless communication node determines a transmission timing of the master information block based on which system frames among a plurality of system frames the wireless communication node transmits the master information block via a physical broadcast channel PBCH, thereby causing the wireless communication device to select one of the plurality of cell beams according to the determined transmission timing.

27. The wireless communication method according to claim 23, wherein: The one or more common signals further include a master information block, and the wireless communication method further includes: The wireless communication node determines the transmission timing of the primary synchronization signal, the transmission timing of the secondary synchronization signal, and / or the transmission timing of the main information block based on which system frames among multiple system frames the wireless communication node sends the primary synchronization signal, the secondary synchronization signal and / or the main information block, thereby causing the wireless communication device to select one of the multiple cell beams according to the determined transmission timing of the primary synchronization signal, the determined transmission timing of the secondary synchronization signal and / or the determined transmission timing of the main information block, wherein the system frame corresponds to the period of transmission of the main information block.

28. The wireless communication method according to claim 23, wherein: The one or more common signals further include a system information block 1, and the wireless communication method further includes: The wireless communication node determines a transmission timing of the system information block 1 based on which system frames among a plurality of system frames the wireless communication node sends the system information block 1, thereby causing the wireless communication device to select one of the plurality of cell beams according to the determined transmission timing.

29. The wireless communication method according to claim 23, wherein: The one or more common signals further include a master information block and a system information block 1, and the method further includes: The wireless communication node determines the transmission timing of the primary synchronization signal, the secondary synchronization signal, the primary information block, and / or the system information block 1 based on which system frames among multiple system frames the wireless communication node sends the primary synchronization signal, the secondary synchronization signal, the primary information block, and / or the system information block, thereby causing the wireless communication device to determine one of the multiple cell beams according to the determined transmission timing of the primary synchronization signal, the determined transmission timing of the secondary synchronization signal, the determined transmission timing of the primary information block, and / or the determined transmission timing of the system information block, wherein the system frame corresponds to the period of reception of the system information block.

30. The wireless communication method according to claim 23, further comprising explicitly indicating, by the wireless communication node, the number of the plurality of cell beams in at least one of a master information block or a system information block.

31. The wireless communication method according to claim 23, wherein: The one or more common signals further include a physical broadcast channel, a master information block and a system information block 1, and the wireless communication method further includes: The wireless communication node explicitly indicates an index or an identifier of one of the multiple cell beams in at least one of a physical broadcast channel, a master information block, or a system information block 1, thereby causing the wireless communication device to select the cell beam according to the index or the identifier.

32. The wireless communication method according to claim 23, wherein: The one or more common signals also include a physical broadcast channel, a master information block and a system information block 1, and the wireless communication method also includes the wireless communication node explicitly indicating the periodicity of the cell beam in at least one of the physical broadcast channel, the master information block or the system information block 1, thereby causing the wireless communication device to select the cell beam according to the periodicity.

33. The wireless communication method according to claim 23, further comprising the wireless communication node implicitly indicating the number of the multiple cell beams in a system information block through the number of physical random access channel resource sets.

34. A wireless communication device comprising a processor and a memory, wherein the processor is configured to read code from the memory and implement the method according to any one of claims 1 to 33.

35. A computer program product comprising computer readable program medium code stored thereon, which, when executed by a processor, causes the processor to implement the method according to any one of claims 1 to 33.

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