TW201922000A - Synchronization signal block indication for wireless networks - Google Patents

Abstract

A technique may include receiving, by a user device in a wireless network, a synchronization signal (SS) block, the synchronization signal block including information that identifies the synchronization signal block as either a first type of synchronization signal block for initial system acquisition or a second type of synchronization signal block that is not for initial system acquisition, and synchronization raster alignment information for the synchronization signal block; determining, by the user device based on at least one of the type of the synchronization signal block and the synchronization raster alignment information, that the synchronization signal block is aligned with a synchronization raster; and performing initial system acquisition based on the synchronization signal block. Alternatively, a presence or absence in a synchronization signal block of scheduling information for additional system information (RMSI) may indicate to a user device/UE whether the SS block is synchronization raster aligned or not.

Description

Synchronized signal block indication technology for wireless networks

Field of invention

This note is about communication technology.

Background of the invention

A communication system may be a facility that is capable of communicating between two or more nodes or devices, such as fixed or mobile communication devices. The signal can be carried on a wired or wireless carrier.

An example of a cellular communication system is an architecture, which is standardized by the 3rd Generation Mobile Communications Cooperation Project (3GPP). One of the recent developments in this field usually refers to the long-range evolution technology (LTE) of the global mobile telecommunications system (UMTS) radio access technology. E-UTRA (Evolved UMTS Terrestrial Radio Access) is an air interface for 3GPP Long Range Evolution Technology (LTE) upgrade paths for mobile networks. In LTE, base stations or access points (APs), which are called enhanced node B (eNBs), provide wireless access in a coverage area or cell. In LTE, a mobile device or mobile station is referred to as a user equipment (UE). LTE has included several improvements or advancements.

5G New Radio (NR) progress is part of a continuous action broadband evolution process to meet 5G requirements, similar to the early evolution of 3G and 4G wireless networks. One of the goals of 5G is to provide significant improvements in wireless performance, which can include new levels of data rate, latency, reliability, and security. 5G NR can also be scaled to efficiently connect a large number of Internet of Things (IoT), and it can also provide new mission-critical services.

Summary of invention

According to an exemplary implementation, a method includes, by a base station in a wireless network, selecting a synchronized signal block type as a first type of synchronized signal block for initial system acquisition or non-provided. A second type of synchronization signal block used by the initial system acquisition; and, via the base station, transmitting a synchronization signal block of the selected synchronization signal block type, the transmitted synchronization signal block containing information Identifying the selected synchronization signal block as the first synchronization signal block type or the second synchronization signal block type, and synchronization raster alignment information for the synchronization signal block.

According to an exemplary implementation, a device includes at least one processor and at least one memory containing computer instructions. When executed by the at least one processor, the device causes the device to: via a base station in a wireless network , Select a synchronization signal block type as a first type of synchronization signal block for initial system acquisition or a second type of synchronization signal block for initial system acquisition; and, by the base Station, transmitting a synchronization signal block that is one of the selected synchronization signal block types, and the transmitted synchronization signal block includes information that identifies the selected synchronization signal block type as the first synchronization signal block type or the second synchronization The type of synchronization signal block and the synchronization grid alignment information for the synchronization signal block.

According to an exemplary implementation, a computer program product includes a computer-readable storage medium and stored executable code, and the executable code, when executed by at least one data processing device, is configured to cause the at least one data processing The device implements a method comprising: selecting, by a base station in a wireless network, a synchronized signal block type as a first type of synchronized signal block for initial system acquisition or non-initial system acquisition Using a second type of synchronization signal block; and, via the base station, transmitting a synchronization signal block of one of the selected synchronization signal block types, the transmitted synchronization signal block containing information identifying the selected The synchronization signal block is the first synchronization signal block type or the second synchronization signal block type, and the synchronization grid alignment information for the synchronization signal block.

According to an exemplary implementation, a method includes, by a base station in a wireless network, selecting a synchronized signal block type as a first type of synchronized signal block for initial system acquisition or non-provided. A second type of synchronization signal block used by the initial system acquisition; determining a frequency of a synchronization grid and identifying at least one center frequency of the first type of synchronization signal block used by the initial system acquisition ; By the base station assuming that the selected synchronization signal block type is the first type of synchronization signal block for initial system acquisition, select one of the selected synchronization signal block types for first synchronization The signal block uses a frequency deviation indicating a frequency deviation between an edge of the first synchronized signal block and a resource block of a channel resource block grid; the base station assumes that the selected If the synchronization signal block type is not the second type of synchronization signal block for initial system acquisition, select whether the first synchronization signal block will be aligned with the synchronization grid; and transmit the first synchronization signal block. The synchronization signal block contains information that identifies the type of synchronization signal block, and indicates the frequency deviation. Assuming the selected synchronization signal block type is the first type of synchronization signal block for initial system acquisition, , Or indicate whether the first synchronization signal block will be aligned with the synchronization grid, assuming that the selected synchronization signal block type is not the second type of synchronization signal block for initial system retrieval.

According to an exemplary implementation, a device includes at least one processor and at least one memory containing computer instructions. When executed by the at least one processor, the device causes the device to: via a base station in a wireless network , Select a synchronization signal block type as a first type of synchronization signal block for the initial system acquisition or a second type synchronization signal block for the initial system acquisition; determine a synchronization grid A frequency which identifies at least one center frequency of the first type of synchronization signal block for acquisition by the initial system; by the base station it is assumed that the selected type of synchronization signal block is used by the initial system for acquisition For the first type of synchronization signal block, a frequency deviation is selected for the first synchronization signal block of one of the selected synchronization signal block types, and the frequency deviation indication is between the first synchronization signal block and the first synchronization signal block. A frequency deviation between one end edge and one resource block of a channel resource block grid; by the base station, it is assumed that the selected synchronization signal block type is not the second type used by the initial system acquisition. If the signal block is stepped, select whether the first synchronization signal block will be aligned with the synchronization grid; and transmit the first synchronization signal block which contains information and the information identifies the type of synchronization signal block, and an instruction The frequency deviation assumes that the selected type of synchronization signal block is the first type of synchronization signal block for initial system acquisition, or indicates whether the first synchronization signal block will be aligned with the synchronization grid hypothesis The selected type of synchronization signal block is not the second type of synchronization signal block for initial system acquisition.

According to an exemplary implementation, a computer program product includes a computer-readable storage medium and stored executable code, and the executable code, when executed by at least one data processing device, is configured to cause the at least one data processing The device implements a method comprising: selecting, by a base station in a wireless network, a synchronized signal block type as a first type of synchronized signal block for initial system acquisition or non-initial system acquisition Use a second type of synchronization signal block; determine a frequency of a synchronization grid and identify at least one center frequency of the first type of synchronization signal block for acquisition by the initial system; The base station assumes that the selected synchronization signal block type is the first type of synchronization signal block used by the initial system acquisition, and selects the first synchronization signal block for one of the selected synchronization signal block types. A frequency deviation indicating a frequency deviation between an edge of the first synchronization signal block and a resource block of a channel resource block grid; by the base station assumption If the selected synchronization signal block type is not the second type of synchronization signal block for the initial system acquisition, select whether the first synchronization signal block will be aligned with the synchronization grid; and transmit the first The synchronization signal block contains information that identifies the type of synchronization signal block, and indicates the frequency deviation. Assuming that the selected synchronization signal block type is the first type of synchronization signal block for initial system acquisition. If yes, or whether the first synchronization signal block will be aligned with the synchronization grid, assuming that the selected synchronization signal block type is not the second type of synchronization signal block for initial system retrieval.

According to an exemplary implementation, a method includes receiving a synchronization signal block through a user device in a wireless network, the synchronization signal block containing information identifying the synchronization signal block for initial system capture Take one of the first type of synchronization signal block or one of the second type of synchronization signal block not used for the initial system acquisition, and the synchronization grid alignment information for the synchronization signal block; The user device determines that the synchronization signal block is aligned with a synchronization grid according to at least one of the type of the synchronization signal block and the synchronization grid alignment information; and, by the user The device performs initial system acquisition based on the synchronized signal block.

According to an exemplary implementation, a device includes at least one processor and at least one memory containing computer instructions. When executed by the at least one processor, the device is caused to: by a user in a wireless network Device for receiving a synchronization signal block, the synchronization signal block containing information identifying the synchronization signal block as one of the first type of synchronization signal block for initial system acquisition or one of non-initial system acquisition A second type of synchronization signal block and synchronization grid alignment information for the synchronization signal block; by the user device according to the type of synchronization signal block and the synchronization grid alignment information At least one of them, it is determined that the synchronization signal block is aligned with a synchronization grid; and, by the user device, an initial system acquisition is performed according to the synchronization signal block.

According to an exemplary implementation, a computer program product includes a computer-readable storage medium and stored executable code, and the executable code, when executed by at least one data processing device, is configured to cause the at least one data processing The device implements a method comprising: receiving a synchronization signal block through a user device in a wireless network, the synchronization signal block containing information identifying the synchronization signal block as one of the initial system acquisition The first type of synchronization signal block or a second type of synchronization signal block not used for initial system acquisition, and the synchronization grid alignment information for the synchronization signal block; by the user device Determining that the synchronization signal block is aligned with a synchronization grid according to at least one of the type of the synchronization signal block and the synchronization grid alignment information; and by the user device, according to the The synchronized signal block performs the initial system acquisition.

According to an exemplary implementation, a method includes receiving a synchronization signal block through a user device in a wireless network, the synchronization signal block containing information identifying the synchronization signal block for initial system capture Accessing a synchronization signal block of a first type or a synchronization signal block of a second type not used for initial system acquisition, and synchronization grid alignment information for the synchronization signal block; and, With the user device, the initial system acquisition is performed based on the synchronization signal block assuming that at least one of the majority conditions exists: the synchronization signal block is the first type of synchronization signal for the initial system acquisition Block; and the synchronization signal block is the second type of synchronization signal block not used for initial system acquisition and the synchronization grid alignment information indicates that the synchronization signal block is aligned with the synchronization grid.

According to an exemplary implementation, a device includes at least one processor and at least one memory containing computer instructions. When executed by the at least one processor, the device is caused to: by a user in a wireless network Device for receiving a synchronization signal block, the synchronization signal block containing information identifying the synchronization signal block as one of the first type of synchronization signal block for initial system acquisition or one of non-initial system acquisition A second type of synchronization signal block and synchronization grid alignment information for the synchronization signal block; and, by the user device, at least one of a majority of conditions is assumed to exist based on the synchronization signal block If so, the initial system acquisition is performed: the synchronization signal block is the first type of synchronization signal block used for the initial system acquisition; and the synchronization signal block is the second type of the synchronization signal block not used for the initial system acquisition. The synchronization signal block and the synchronization grid alignment information indicate that the synchronization signal block is aligned with the synchronization grid.

According to an exemplary implementation, a computer program product includes a computer-readable storage medium and stored executable code, and the executable code, when executed by at least one data processing device, is configured to cause the at least one data processing The device implements a method comprising: receiving a synchronization signal block through a user device in a wireless network, the synchronization signal block containing information identifying the synchronization signal block as one of the initial system acquisition The first type of synchronization signal block or a second type of synchronization signal block not used for initial system acquisition, and the synchronization grid alignment information for the synchronization signal block; and, through the use The device performs initial system acquisition based on the synchronization signal block assuming that at least one of most conditions exists: the synchronization signal block is the first type of synchronization signal block for initial system acquisition; and the The synchronization signal block is not the second type of synchronization signal block for the initial system acquisition and the synchronization grid alignment information indicates that the synchronization signal block is aligned with the same Raster.

According to an exemplary implementation, a method includes receiving a synchronized signal block through a user device in a wireless network; according to a remaining minimum system information (RMSI) schedule information in the synchronized signal block A presence detects that the synchronization signal block is aligned by a synchronization grid; and, by the user device, responding to the existence of the remaining minimum system information (RMSI) scheduling information in the synchronization signal block, The initial system acquisition is performed according to the synchronized signal block.

According to an exemplary implementation, a device includes at least one processor and at least one memory containing computer instructions. When executed by the at least one processor, the device is caused to: by a user in a wireless network A device that receives a synchronized signal block; detects that the synchronized signal block is aligned by a synchronized grid based on the presence of one of the remaining minimum system information (RMSI) schedule information in the synchronized signal block; and, by The user device responds to the existence of the remaining minimum system information (RMSI) scheduling information in the synchronization signal block, and performs initial system acquisition based on the synchronization signal block.

According to an exemplary implementation, a computer program product includes a computer-readable storage medium and stored executable code, and the executable code, when executed by at least one data processing device, is configured to cause the at least one data processing The device implements a method comprising: receiving a synchronized signal block through a user device in a wireless network; and detecting the presence of one of the remaining minimum system information (RMSI) scheduling information in the synchronized signal block The synchronization signal block is aligned by a synchronization grid; and, by the user device, in response to the existence of the remaining minimum system information (RMSI) scheduling information in the synchronization signal block, according to the synchronization The signal block performs the initial system acquisition.

Details of the construction of one or more examples are stated in the accompanying drawings and in the description below. Other features will be apparent from these descriptions and drawings, and from the claims.

Detailed description

According to an exemplary implementation, a method may include, by a base station in a wireless network, selecting a type of synchronization signal block as a first type of synchronization signal block or not for initial system acquisition. A second type of synchronization signal block for initial system acquisition; and, via the base station, transmitting a synchronization signal block of the selected synchronization signal block type, the transmitted synchronization signal block containing information It identifies the selected synchronization signal block as the first synchronization signal block type or the second synchronization signal block type, and synchronization grid alignment information for the synchronization signal block.

According to an exemplary implementation, the method may further include determining a frequency of the synchronization grid and identifying at least one center frequency of the first type of synchronization signal block for acquisition by the initial system.

According to an exemplary implementation, the synchronization grid alignment information for the synchronization signal block may include at least one of the following: a frequency deviation for the synchronization signal block assuming the synchronization signal block type If the first type of synchronization signal block is used for the initial system acquisition, the frequency deviation indication for the synchronization signal block is between one of the edge of the synchronization signal block and one of a channel resource block grid. A frequency deviation between resource blocks; and information indicating whether the synchronization signal block type is not the second type of synchronization signal block for initial system acquisition, whether the synchronization signal block is aligned with the synchronization Grid.

According to an exemplary implementation, the information identifying the selected synchronized signal block as the first synchronized signal block type or the second synchronized signal block type, and the synchronization grid alignment information may be included in the synchronized signal block. A physical broadcast channel resource is provided in one of the main resource blocks.

According to an exemplary implementation, a method may include receiving a synchronized signal block through a user device in a wireless network, the synchronized signal block containing information identifying the synchronized signal block for an initial system A first type of synchronization signal block for acquisition or a second type of synchronization signal block for initial system acquisition and synchronization grid alignment information for the synchronization signal block; The user device determines that the synchronization signal block is aligned with a synchronization grid according to at least one of the type of the synchronization signal block and the synchronization grid alignment information; and, by using the The device performs initial system acquisition based on the synchronized signal block.

According to another exemplary implementation, a method may include receiving a synchronized signal block through a user device in a wireless network; according to a remaining minimum system information (RMSI) rank in the synchronized signal block The presence of one of the process information detects that the synchronization signal block is aligned by the synchronization grid; and responds to the existence of the remaining minimum system information (RMSI) scheduling information in the synchronization signal block by the user device , The initial system acquisition is performed based on the synchronized signal block. Various illustrative examples will now be described.

FIG. 1 is a block diagram of a wireless network 130 according to an exemplary implementation. In the wireless network 130 of FIG. 1, user devices 131, 132, 133, and 135, which can also be referred to as mobile stations (MSs) or user devices (UEs), can communicate with a base station (BS) 134, It can also be called an access point (AP), an enhanced node B (eNB), a gNB, or a network node to connect (and communicate). At least part of the functions of an access point (AP), base station (BS) or (e) node B (eNB) can also be operatively coupled to any node of a transceiver, such as a remote radio headpiece , Server, or host. The BS (or AP) 134 provides wireless coverage within a unit 136, including the user devices 131, 132, 133, and 135. Although only four user devices are shown connected or attached to the BS 134, any number of user devices can be provided. The BS 134 is also connected to a core network 150 via an S1 interface 151. This is just a simple example of a wireless network, and other wireless networks can be used.

A user device (user terminal, user device (UE), or mobile station) may refer to a portable computing device that includes a wireless mobile communication device that operates with or without a subscriber identity module (SIM), including, But not limited to the following types of devices: a mobile station (MS), a mobile phone, a cell phone, a smart phone, a personal assistant (PDA), a mobile phone (handset), and a wireless Modem devices (alarm or measurement devices, etc.), a laptop and / or touch screen computer, a tablet computer, a tablet phone, a game console, a notebook computer, and a multimedia device, for example and Speak. It should be understood that a user device can also be a near-proprietary and only uplink device, an example of which is a camera or video camera that uploads images or video clips to a network.

In LTE (for example), the core network 150 may be referred to as an evolved packet core (EPC), which may include a mobility management entity (MME), and the mobility management entity may process or assist between BSs, The mobility / handover of one or more gateways that transmit data and control signals between the BSs and the packet data network or the Internet, and other control functions or blocks.

In addition, by way of illustrative examples, the various illustrative implementations or technologies described herein may be applicable to various types of user devices or data service types, or may be applicable to user devices that may have the capability to operate on that device. Most applications for different types of data services. New radio (5G) can support several different applications or different data service types, such as, for example, machine-based communication (MTC), enhanced machine-based communication (eMTC), Internet of Things (IoT), and / or narrowband IoT user devices, enhanced mobile broadband (eMBB), wireless relay including self-reversal, D2D (device-to-device) communication, and ultra-reliable and low-latency communication (URLLC). The script can cover both traditional licensed and unlicensed band operations.

IoT can refer to a continuously growing group of objects that can have Internet or network connectivity, so such objects can send information to and receive information from other network devices. For example, many sensor-based applications or devices can monitor a physical condition or a status, and can send a report to a server or other network device, such as when an event occurs. The characteristics of machine-type communication (MTC, or machine-to-machine communication) can be, for example, fully automatic data generation, exchange, processing, and actuation between intelligent machines, with or without human intervention. Enhanced Mobile Broadband (eMBB) can support higher data rates than those currently available in LTE.

Ultra-reliable and low-latency communication (URLLC) is a new type of data service, or a new usage script, which can be supported by a new radio (5G) system. New applications and services can emerge, such as industrial automation, autonomous driving, vehicle safety, e-health services, and so on. By way of illustrative example, 3GPP aims to provide reliable connectivity with a block error rate (BLER) of 10 ^-5 and a U-plane (user / data plane) latency of up to 1 ms. Therefore, for example, URLLC user devices / UEs may require significantly lower block error rates and lower latency than other types of user devices / UEs (with or without high reliability at the same time).

Various exemplary implementations are applicable to a wide variety of wireless technologies or wireless networks, such as LTE, LTE-A, 5G, cmWave, and / or mmWave band networks, IoT, MTC, eMTC, eMBB, URLLC, etc., Or any other wireless network or wireless technology. This type of illustrative network, technology, or data service is provided as an illustrative example only.

According to an exemplary implementation, a BS (for example, a 5G BS, which may be referred to as a gNB, or other BS) may transmit a synchronization signal block (SS block, or SSB), which may be transmitted by one or more UEs / Received by the user device. In an exemplary implementation, an SS block may include, for example, one or more or even all of the following: a primary synchronization signal (PSS), a secondary synchronization signal (SSS), a physical broadcast control channel (PBCH) ), And the demodulation reference signal (DMRS). By way of illustrative examples, PSS and SSS may allow a UE to obtain initial system acquisition, for example, it may include obtaining initial time synchronization (e.g., including symbol and picture timing), initial frequency synchronization, and unit acquisition (e.g., , Including the entity unit ID for the unit). In addition, a UE may use DMRS and PBCH to determine slots and picture timing. In addition, the PBCH may provide one UE with one or more important parameters (for example, the number of system screens, how to receive the remaining system information / RMSI information) to access the unit, and may also include slits and screen timing. DMRS allows UEs to demodulate PBCH coherently, and it can also transmit slot timing information. This class is some illustrative examples of how various control information within a synchronization signal block can be used by a UE.

FIG. 2 is a diagram illustrating a synchronization signal block (SS block) according to an illustrative exemplary implementation. The SS block 200 may include information provided across 4 symbols and 12-24 resource blocks (RBs, also known as physical resource blocks or PRBs). For example, as shown in SSB 200 of FIG. 2, the primary synchronization signal (PSS) 220 is provided via 12 PRBs and an OFDM (orthogonal frequency division multiplexing) symbol (shown as the first OFDM symbol). An auxiliary synchronization signal (SSS) 222 is provided via 12 PRBs and a third OFDM symbol. The physical broadcast control channel (PBCH) 224 and the demodulation reference signal (DMRS) 226 are interleaved in both the second and fourth OFDM symbols of the SSB 200 and are provided across 24 PRBs, as shown in FIG. 2. Each resource block (RB), which may also be referred to as a physical resource block (PRB), may include a plurality of subcarriers, such as 12 subcarriers, for example, or another number of subcarriers.

In addition, according to an exemplary implementation, one or more SS blocks may be fixed in time domain position, such as transmitted by a BS within a specific time window (for example, 5 ms), where the set of SS blocks within this time window It can be called an SS burst set.

According to an exemplary implementation, such as for new radio (NR) / 5G, the SS block can be allocated within the NR carrier in a flexible manner according to the time and frequency domain configuration. In the time domain, the SS block (or burst group) can be transmitted periodically in one of 5, 10, 20, 40, 80, or 160 ms. In the frequency domain, a floating or variable frequency synchronization can be used (e.g., or a variable subcarrier system is used for the NR SS block).

According to an exemplary implementation, there can be at least two cases where a BS can transmit an SS block (and therefore, two types of SS blocks):

1) For initial system acquisition, the SS block will be aligned to a synchronization grid. For example, synchronization grid alignment may mean or include that a center frequency of an SS block is aligned to a synchronization grid frequency. In addition, for example, a synchronized grid may include one or more synchronized grid frequencies. Each synchronized grid frequency indicates that a center frequency of one of the SS blocks of a possible frequency can be aligned (at least for the SS blocks transmitted for initial system acquisition). Therefore, for example, an SS block transmitted in this case (to allow the UE to perform initial system acquisition) may be referred to as a first-type (or first-type) synchronization signal block for initial system acquisition.

2) The BS can also send other SS blocks, which are not provided for the initial system acquisition. Conversely, in this case, the SS block, for example, can be parallel to the data transfer to assist in the multiplexing of the data, for example, and not for the initial system retrieval. Such SS blocks may be placed at different frequency positions (or aligned to different frequencies or subcarriers), and such SS blocks are not necessarily aligned to a synchronization grid. Conversely, in some cases, such SS blocks are not intended for initial system acquisition, but can be (or typically are) aligned to one of the RBs of a channel RB grid. A channel RB grid can be a grid of RBs or resources spanning time and frequency, which can be used by a UE or BS to transmit or receive information (data or control information). Therefore, for example, an SS block transmitted in this case (not for the initial system acquisition) can be referred to as a second type (or type 2) synchronization signal block not for the initial system acquisition. .

According to an exemplary implementation, a synchronization grid indicates one or more possible center frequency locations where the SS blocks will be aligned, at least for the first type of SS blocks for initial system acquisition. Therefore, a center frequency of at least one first type of SS block is aligned with a synchronized grid frequency. A synchronized grid frequency can be, for example, 300 KHz or 900 KHz. The synchronization grid frequency can be known in advance by both the BS and the UE. By receiving an SS block with a known center frequency (synchronized grid frequency), this allows the UE to accurately perform the initial system acquisition, including frequency synchronization. On the other hand, suppose that a UE receiving a block of SS is believed to be aligned by a synchronization grid, but not aligned by a synchronization grid (or is aligned to an unknown frequency / subcarrier). The UE typically causes errors when trying to obtain an initial system acquisition. So, for example, suppose the UE receives an SS block which is a second type of SS block (not for initial system retrieval) and the UE is expected to receive a first type of SS block (for initial system acquisition and synchronization) For grid alignment), this may cause errors when the UE attempts to obtain an initial system acquisition.

According to an exemplary implementation, a channel RB grid is a grid (in terms of time and frequency) of RBs that can be used for data or control channel transmission. An RB is a resource or element in the RB grid of a channel.

According to an exemplary implementation, a channel grid (e.g., 15 KHz, or 100 KHz) identifies a center frequency of a carrier for a system band (or for a channel RB grid-it identifies various resources and those resources are available To send data or control information within the channel). A channel grid determines the granularity (or how often) the channel RB grid will be provided by the BS.

It may be desirable to define a synchronization grid to contain a minimum or a minimum number of entries (synchronization grid frequency) for each frequency band. So, for example, the synchronization grid may be scarce, with only a very limited or very few entries (synchronization grid frequency), in order for the UE to try, for example, to indicate only 300 KHz and 900 KHz as the synchronization grid frequency. The synchronization grid reduces the complexity of searching for the UE when performing the initial system acquisition.

According to an exemplary implementation, a synchronized grid entry (synchronized grid frequency) can be specified for each frequency band and can be known by the UE and the BS. The UE, when receiving an SS block, may attempt to detect the PSS at or around the synchronization grid frequency (for example, the center frequency of the SS block), and assuming that the UE does not detect a PSS, the UE may move to receive (for example, , Adjust its receiver to receive) one of the SS blocks at the next (or another) synchronized grid entry / frequency and then attempt to detect the PSS. After detecting the PSS, the UE can then detect the SSS, PBCH, and DMRS of the received SS block. As noted, synchronized grid entries / frequency can be defined for initial system acquisition. And, for example, it is assumed that the SS block can be transmitted at other frequency positions when the position / frequency is signaled by the BS to the UE.

One RB of a one-channel RB grid may include a plurality of subcarriers (for example, 12 subcarriers) corresponding to one OFDM symbol. For a first type of SS block (for initial retrieval of system information), the SS block may not be aligned with one of the RBs in the channel RB grid (e.g., aligned with an RB edge, RB boundary, or an First subcarrier).

FIG. 3 is a diagram illustrating a deviation between a synchronization signal (SS) block and a resource block of a channel resource block grid according to an exemplary implementation. As shown in FIG. 3, it is shown that according to an illustrative example, a resource block (RB) 310 and a synchronization signal (SS) block 320 of a channel RB grid. Because SS block 310 may not (necessarily) be aligned with one of the RBs of the channel RB grid, a frequency deviation 330 (eg, a deviation between 0 and 11 resource elements / subcarriers) may exist in SS block 320 One edge (for example, a boundary or a first subcarrier) and one of RB 310 (or an edge or a first subcarrier of RB 310) of a channel resource block grid.

Therefore, there may be an arbitrary deviation (deviation 330) between the edge of the synchronization block RBs and the edge of the data RBs in the channel RB grid, and this deviation may be as high as 11 REs (resource element or subcarrier). Speak. This elasticity or variable deviation 330, for example, enables most channels that are aligned with the subcarrier grid but not aligned with the RB grid to use the same SS block location. Different channels with frequency deviations up to 11 REs can reuse the same synchronized signal (SS) block frequency position. Therefore, for example, the frequency deviation 330 of the synchronization signal block 320 is a frequency deviation 330 between an edge of the synchronization signal (SS) block 320 and a resource block 310 of a channel resource block grid. Carrier). Thus, any deviation 330 may identify the beginning or edge of one of the SS blocks 320 as related to an RB 310 (e.g., it may be, for example, one of the channels within the channel RB grid is closest (e.g., or the closest lower) Frequency) RB boundary).

Therefore, in the case where the SS block 320 is a first type of SS block for initial acquisition of system information, the SS block 320 may not be aligned with one of the RBs of the channel RB grid. Therefore, the deviation 330 may identify a frequency deviation for the synchronization signal (SS) block 320 indicating that it is between the SS block (eg, an edge of the SS block) 320 and a resource block (RB) 310 of a channel resource block grid. Frequency deviation. Because one of the SS blocks of the first type (for initial system acquisition) has a center frequency that is aligned with a synchronized grid frequency (which is known by the UE), then the UE can use the deviation 330 (assuming it is known by the UE) To identify an edge of one of the RBs (eg, the first subcarrier) of one of the channel RB grids, which can be used by the UE to transmit or receive information via the channel RBs, for example.

According to an exemplary implementation, the PBCH in an SS block may include (or include a parameter indicating) a deviation 330 between the SS block 320 and the RB 310 of the channel RB grid. For example, one of the major information blocks (MIBs) in the PBCH, which is contained in an SS block 320, may include this deviation 330.

A UE can know or determine a synchronization frequency (for example, it can be known in advance by the UE), and the UE can receive an SS block (for example, a first type of SS block, which is aligned by a synchronization grid) ) It may include an offset 330 within one MIB of the PBCH of the SS block. Then, based on this deviation, the UE may decide to use an edge or a first subcarrier for an RB (eg, such as a closest RB) within a channel RB grid. In this way, the UE can determine the RB alignment (subcarrier alignment and RB alignment) for the channel RBs based on the frequency deviation. Based on this RB alignment for channel RBs, the UE can then send and / or receive data and control information via channel RBs of a channel, as this can provide RB (and subcarrier) alignment for channel RBs. This RB alignment can be kept constant for a given unit. For example, in order to access the actual channel, the UE may need to know the deviation. According to an illustrative information, a MIB, for example, can use 4 bits or other size control information to accommodate this frequency deviation information (330).

Therefore, according to an exemplary implementation, a BS can transmit two types (or types) of SS blocks, including, for example ,:

(1) A first type of SS block that can typically be aligned by a synchronized grid and available for initial system retrieval, and:

(2) A second type of SS block may not be synchronized to the grid, and typically is not used by an UE for initial system acquisition. In an illustrative example or use case, the second type of SS block, for example, can typically be transmitted with data and the data can be used for time and frequency tracking by the connected mode UEs. The second type of SS block typically does not target the UE to perform initial system acquisition, and, for example, can align one RB 俾 of a channel RB grid with other physical channels that can be received by the UE to efficiently multiplex.

Suppose a UE implements initial system fetching based on a second type of SS block (an SS block that is not synchronized with the grid alignment), where the UE assumes (wrongly) that the SS block is aligned with the synchronized grid , Then this may cause initial system acquisition errors at the UE (eg, frequency and / or time synchronization errors). Therefore, in order to resolve whether a received SS block at the UE is a first type of SS block (which is aligned by a synchronized grid) or a second type of SS block (which may not be a synchronized grid) Alignment) is one of the possible ambiguities. It is desirable to provide one or more technologies or signals to inform the UE whether a received SS block is a type SS block (aligned by a synchronized grid) or a type 2 SS block (which may not be aligned by the synchronization grid).

FIG. 4 is a diagram illustrating two types of synchronization signal blocks according to an exemplary implementation. A problem may arise where one UE, although attempting to perform an initial system acquisition, may receive an SS block 420 of a second type that may or may not be aligned by the synchronization grid. This may cause errors at the UE during the initial system acquisition. For example, there may be timing and / or frequency synchronization errors at the UE because the center frequency of the SS block is not necessarily aligned with a (known) synchronization grid frequency . The configuration information for the SS block 420, which can be referred to as synchronized grid alignment information, can be included in one of the MIBs included in the PBCH of the SS block 420, which can indicate that the SS block 420 is a second type The SS block, and whether or not the SS block 420 is aligned by the synchronization grid.

In addition, referring to FIG. 4, a UE may instead receive (and may be based on) an SS block 430 of a first type (in an attempt to perform initial system acquisition) which is synchronized to a grid and used by the UE for initial For system capture. Therefore, in the illustrative example shown in FIG. 4, the first type of SS block 430 has a center frequency which is aligned (corresponds) to the synchronization grid frequency 440. In addition, a MIB in a PBCH may include synchronized grid alignment information, which may indicate at least SS block 430 is a first type of SS block for initial system retrieval (where the SS block is a synchronized grid alignment). Synchronized grid alignment information may also indicate a deviation 330 between a SS block and one of the RBs of a channel RB grid for a first type of SS block. For example, a second type of SS block may have an offset = 0 RBs, and therefore, it may typically be a frequency / RB aligned channel RB grid. Therefore, a second type of SS block can be RB aligned to the channel RB grid, and therefore, the subcarriers and RB alignment for the channel RB grid are known by the connected UEs, for example. So for example, for a first type of SS block, one center frequency of the SS block is frequency aligned with a synchronization grid; the synchronization grid frequency can be known by both the BS and the UE and can be specified by a specification / Standard setting, and inform the UE of the frequencies / subcarriers where a first type of SS block is located, identifying the subcarrier alignment for the first type of SS block. The PBCH contains the MIB (within the SS block) whose identifiable deviation is between, for example, the first subcarrier or edge of the first type of SS block and one within a channel RB grid (for example, the closest or The nearest lower frequency) deviation between one of the edges of the RB or the first subcarrier.

Table 1 below indicates various values for the synchronization grid alignment information (or more generally, the SS block configuration information) to indicate whether the SS block is a first type or a second type of SS block. These values may also indicate a frequency deviation 330 (for a SS block of a first type) or whether the SS block is aligned by a synchronization grid (for example, for a SS block of a second type). The BS may include one of such values for use in synchronized grid alignment information (or more generally, SS block configuration information), which may indicate the type of SS block, and may also indicate deviations (e.g., For the first type of SS block) or whether the SS block is aligned by a synchronization grid (for example, for a second type of SS block). By including a BS with a value from Table 1 (for synchronization grid alignment information or SS block configuration information), this can inform the UE whether this received SS block is aligned by the synchronization grid. (And therefore, it is indicated to the UE whether the SS block is available for initial system acquisition, unit acquisition, etc.). A value from Table 1, for example, may be contained in a MIB, which may be contained in a PBCH, one of the SS blocks. This value may also indicate a deviation 330, for example, for a first type of SS block.

According to an exemplary construction, as shown in Table 1, two values (for example, 1110 or 1111) can be provided for a second type of SS block, including a first value (1110) which indicates that the SS block is not For initial system acquisition and not synchronized grid alignment, however, a second value and a second value (1111) indicate that the SS block is not for initial system acquisition and the SS block is synchronized Grid alignment.

Table 1-Values for synchronizing grid alignment information (or SS block configuration information) to indicate a SS block of a first type or a second type, and to indicate a deviation (for the SS of the first type) Block) or whether the SS block is aligned by a synchronization grid (eg, for a second type of SS block).

Therefore, in an exemplary implementation, a 4-bit field or value is included in an SS block, which can indicate whether the SS block is used for initial frequency synchronization / system acquisition, and can also indicate a Bias, which may indicate the location of the SS block within the channel RB grid (or the location of the SS block relative to the RB of the channel RB grid, for example). Because the deviation, for example, can vary from 0 REs / subcarrier to 11 REs / subcarrier, 12 different values can be used to indicate (for the first type of SS block) the deviation. In addition, one or more values in Table 1 can be used to indicate that the SS block is not used for initial system retrieval, and such a value can also indicate whether (in the second form) the SS block is aligned by the synchronization grid ( (See values 1110 and 1111).

According to an exemplary implementation, a BS can select the SS block type and deviation value, depending on the SS block of the first type or the second type to be transmitted. Assuming a first type of SS block will be transmitted (for example, for initial system retrieval), the deviation will be indicated. And, assuming that a second type of SS block is to be transmitted (not for initial system retrieval), the value may indicate that the SS block is aligned or misaligned with the synchronization grid, for example, because, according to an exemplary construction It is possible that the second type of SS block may be aligned by the synchronization grid, but it may not be aligned by the synchronization grid, for example. The BS then transmits an SS block containing, for example, the value in one of the MIBs in the PBCH of the SS block (from Table 1). The 4-bit value (Table 1) can be or can indicate synchronization grid alignment information or SS block configuration information.

According to an exemplary implementation, a UE may receive or detect an SS block, including a PBCH, which contains a 4-bit value (Table 1) and the value indicates synchronization grid alignment information or SS block configuration information. This 4-bit value may indicate an SS block type and may include or indicate an offset value. The UE can determine whether the SS block is a SS block of the first type or a second type according to the 4-bit value in the PBCH, and whether it is aligned with the synchronization grid (for all the SS blocks of the first type) , And may be used for some second-type SS blocks). Assuming that a first type of SS block is indicated, the UE can also determine the deviation.

Assuming that an SS block is aligned by a synchronization grid (for example, all SS blocks of the first type, and possibly some second type of SS blocks), the UE can implement initial system acquisition / frequency synchronization based on the SS blocks ( Decision Frequency Alignment) because the SS block has a center frequency aligned to a known synchronization grid frequency. Assuming that the SS block is not aligned with the synchronized grid, the UE may receive the PSS of the next SS block or another SS block in an attempt to implement the initial system acquisition based on this SS block. Once a UE implements the initial system acquisition, the UE may determine that the RB for the RB channel grid is aligned according to the deviation value for the SS block to allow the UE to transmit and receive information on the channel.

In addition, in an exemplary implementation, all SS blocks of the second type can be aligned by the synchronization grid. Alternatively, in another exemplary implementation, all of the second type of SS blocks are not aligned by the synchronization grid. Alternatively, in yet another exemplary implementation, the second type of SS block may or may not be aligned by a synchronized grid (for example, see values 1110 and 1111 in Table 1 to cover this exemplary implementation).

In addition, according to an exemplary implementation, some restrictions may be provided by the network or BS on where such additional (non-second type SS blocks for initial system acquisition) may be configured (which frequencies or subcarriers). For example, the BS may only be allowed to place a second type of SS block (or an SS block that is not aligned with the synchronization grid) at a frequency position that is not too close to the synchronization grid. For example, the second type of SS block should Having a center frequency is aligned to a frequency or subcarrier which is at least a critical frequency (or a critical number of subcarriers) away from (or any) synchronization grid frequency. In this way, this restriction can prevent a BS from transmitting too close (or within a critical frequency) to synchronize the grid frequency / most of the second type of SS block (which is not used for initial system acquisition) . Therefore, in this exemplary implementation, the network (e.g., BS) does not allow (should not) be near a first type of SS block (or within a critical frequency or a critical number) for initial system acquisition Within the subcarriers) to transmit additional SS blocks (eg, a second type of SS block, which is not used for initial system acquisition). There may be a clear rule stating that within a given frequency-domain window of one of the SS blocks used for initial system acquisition, the network (BS) should not transmit additional SS blocks that are not used for initial system acquisition (a second type of SS Piece). This limitation on the frequency placement of the second type of SS block can improve UE performance. For example, at least in some cases, without any restrictions may have a significant negative impact on the performance of the UE, for example, the UE may not be able to detect a unit, or it may not be able to detect an SS block (eg, PSS, SSS, etc.).

According to another illustrative example, a UE (e.g., in the initial unit selection procedure) finds or detects that it does not carry an SS block of (valid) RMSI schedule information, the UE will not Assume that this SS block can be used for initial system acquisition (for example, this SS block is not (or will not) be used for frequency synchronization, for example, not used to reduce or improve a frequency error ). In other words, assuming that the SS block does not carry (include) one schedule information for RMSI, the UE does not assume that the SS block is aligned by the synchronization grid. Therefore, in this case, for example, the UE will not use this SS block for initial system acquisition. For example, the UE may then receive another (e.g., a second) SS block, and then may use this other SS block, assuming this other SS block is aligned by a synchronization grid for initial system acquisition if.

According to an exemplary implementation, assuming that the received SS block contains RMSI scheduling information, the UE can assume that the SS block can be used for initial system retrieval (for example, the SS block can (or be) used for frequency For synchronization purposes, including, for example, reducing or improving a frequency error). In other words, assuming that the SS block contains scheduling information for RMSI, the UE can assume that this SS block is aligned by the synchronization grid. Therefore, in this case, for example, the UE can then use, for example, the initial system retrieval based on the existence of RMSI scheduling information (which indicates resources where the UE can obtain additional system information) within the received SS block. Use this SS block.

Therefore, for example, a UE, for example, can determine whether the SS block is separately based on the presence or absence of RMSI scheduling information in an SS block (the RMSI scheduling information indicates time-frequency resources in which RMSI information can be found) The system is aligned by the synchronization grid. Therefore, this technology can be used with a BS that contains synchronized grid alignment information in a PBCH containing SS blocks, or can be used to replace a BS that contains synchronized grid alignment information in a PBCH that contains SS blocks. The UE determines whether an SS block is available for initial system acquisition.

Example 1: FIG. 5 is a flowchart illustrating the operation of a base station according to an exemplary construction. Operation 510 includes, by a base station in a wireless network, selecting a synchronized signal block type as a first type of synchronized signal block for initial system acquisition, or for a non-initial system acquisition. A second type of synchronization signal block. And, operation 520 includes transmitting, through the base station, a synchronization signal block of one of the selected types of synchronization signal blocks, and the transmitted synchronization signal block includes information identifying the selected synchronization signal block as the first The synchronization signal block type or the second synchronization signal block type and the synchronization grid alignment information for the synchronization signal block.

Example 2: An exemplary implementation according to one of Example 1, and further including determining a frequency of the synchronization grid and identifying at least one center frequency of the first type of synchronization signal block for acquisition by an initial system.

Example 3: An exemplary implementation according to any one of Examples 1-2, wherein the synchronization grid alignment information for the synchronization signal block includes at least one of the following: for the synchronization signal A frequency deviation for the block Assuming that the type of the synchronization signal block is the first type of synchronization signal block used for the initial system acquisition, the frequency deviation indication for the synchronization signal block is between the synchronization signal A frequency deviation between an end edge of a block and a resource block of a channel resource block grid; and information indication, assuming that the type of synchronization signal block is not the second type of synchronization signal block for initial system acquisition If yes, whether the synchronization signal block is aligned with the synchronization grid.

Example 4: An exemplary implementation according to any one of Examples 1-3, wherein the selected synchronization signal block is identified as the first synchronization signal block type or the second synchronization signal block type. , And the synchronization grid alignment information is provided in one of the main information blocks contained in one of the physical broadcast channel resources of the synchronization signal block.

Example 5: An exemplary implementation according to any one of Examples 1-4, wherein the transmission includes at least one of the following: via the base station, the first synchronization is transmitted for initial system retrieval A signal block type of a first synchronization signal block, the first synchronization signal block is aligned to a synchronization grid frequency; and, through the base station, the second synchronization is not used for initial system acquisition A second synchronization signal block of the synchronization signal block type, the second synchronization signal block is aligned with a frequency which is at least a critical frequency or a critical number of subcarriers far from the synchronization grid frequency.

Example 6: FIG. 6 is a flowchart illustrating the operation of a base station according to an exemplary construction. Operation 610 includes, by a base station in a wireless network, selecting a synchronized signal block type as a first type of synchronized signal block for initial system acquisition, or for a non-initial system acquisition. A second type of synchronization signal block. Operation 620 includes determining a frequency of a synchronization grid that identifies at least a center frequency of the first type of synchronization signal block for acquisition by the initial system. Operation 630 includes, by the base station assuming that the selected synchronization signal block type is the first type of synchronization signal block for initial system acquisition, selecting one of the selected synchronization signal block types. A synchronization signal block uses a frequency deviation indicating a frequency deviation between an edge of the first synchronization signal block and a resource block of a channel resource block grid. Operation 640 includes, by the base station assuming that the selected synchronization signal block type is not the second type of synchronization signal block for initial system acquisition, selecting whether the first synchronization signal block will be aligned The synchronization grid. Operation 650 includes transmitting the first synchronization signal block which contains information and the information identifies the type of synchronization signal block, and instructs the frequency deviation to assume that the selected synchronization signal block type is the first synchronization signal block for the initial system acquisition. A type of synchronization signal block, or indicates whether the first synchronization signal block will be aligned with the synchronization grid. Assume that the selected synchronization signal block type is not the second type for initial system acquisition. Words synchronizing signal blocks.

Example 7: FIG. 7 is a flowchart illustrating the operation of a user device according to an exemplary implementation. Operation 710 includes receiving a synchronization signal block through a user device in a wireless network, the synchronization signal block containing information identifying the synchronization signal block as a first type for initial system acquisition. The synchronization signal block or a second type of synchronization signal block not used for the initial system acquisition, and the synchronization grid alignment information for the synchronization signal block. Operation 720 includes determining, by the user device, that the synchronized signal block is aligned with a synchronized grid according to at least one of the type of the synchronized signal block and the synchronized grid alignment information. Operation 730 includes performing, by the user device, an initial system acquisition based on the synchronized signal block.

Example 8: An exemplary implementation according to one of Example 7, wherein a first type of synchronization signal block for initial system acquisition is placed on a frequency of the synchronization grid for initial system acquisition; A second type of synchronization signal block that is not used for initial system acquisition is not placed on a frequency of the synchronization grid; and wherein one or more frequencies of the synchronization grid correspond to the user device Search for a synchronized signal block to perform the initial system acquisition.

Example 9: FIG. 8 is a flowchart illustrating the operation of a user device according to an exemplary implementation. Operation 810 includes receiving a synchronization signal block through a user device in a wireless network, the synchronization signal block including information identifying the synchronization signal block as a first type for initial system acquisition. The synchronization signal block or a second type of synchronization signal block not used for the initial system acquisition, and the synchronization grid alignment information for the synchronization signal block. And, operation 820 includes performing, by the user device, an initial system acquisition based on the synchronization signal block assuming that at least one of most conditions exists: the synchronization signal block is the first One type of synchronization signal block; and the synchronization signal block is not the second type of synchronization signal block for initial system acquisition and the synchronization grid alignment information indicates that the synchronization signal block is aligned The synchronization grid.

Example 10: An exemplary implementation according to one of Example 9, wherein one frequency of the synchronization grid identifies a center frequency which is used by the synchronization signal block. Assume that the synchronization signal block is used for initial system acquisition. If the synchronization signal block of the first type is used for the synchronization signal block, it is assumed that the synchronization signal block is a synchronization signal block of the second type which is not used for the initial system acquisition and the synchronization gate is assumed. The grid alignment information indicates that the synchronization signal block is aligned with the synchronization grid.

Example 11: An exemplary implementation according to any one of Examples 9-10, wherein the synchronization grid alignment information for the synchronization signal block includes at least one of the following: for the synchronization signal A frequency deviation for the block Assuming that the type of the synchronization signal block is the first type of synchronization signal block used for the initial system acquisition, the frequency deviation indication for the synchronization signal block is between the synchronization signal A frequency deviation between an end edge of a block and a resource block of a channel resource block grid; and information indication, assuming that the type of synchronization signal block is not the second type of synchronization signal block for initial system acquisition If so, whether the synchronization signal block is aligned with the synchronization grid.

Example 12: An exemplary implementation according to any one of examples 9-11, wherein the selected synchronized signal block is identified with the information of the first synchronized signal block type or the second synchronized signal block type , And the synchronization grid alignment information is provided in one of the main information blocks contained in one of the physical broadcast channel resources of the synchronization signal block.

Example 13: An exemplary implementation according to any one of Examples 9-12, wherein implementing the initial system acquisition includes performing frequency synchronization based on the synchronization signal block.

Example 14: An exemplary implementation according to any one of Examples 9-13, wherein the synchronization signal block type is the first type of synchronization signal block used for initial system acquisition, and wherein the synchronization signal block type is used for the synchronization The synchronization grid alignment information for the synchronization signal block includes: a frequency deviation for the synchronization signal block, and the frequency deviation indication for the synchronization signal block is between an end edge of the synchronization signal block and A frequency deviation between one resource block of a channel resource block grid; the method further comprises: by the user device, determining a resource block pair for one resource block of the channel resource block grid according to the frequency deviation Transmitting and receiving information via one or more channel resource blocks according to the resource block alignment.

Example 15: An exemplary implementation according to any one of Examples 9-14, wherein, by the user device, performing the initial system acquisition based on the synchronized signal block further includes: the user device, in During an initial unit selection procedure, it is detected that the received synchronization signal block does not carry a valid remaining minimum system information (RMSI) schedule information; and, by the user device, the location (or hypothesis) is determined (or assumed) based on the detection. The received synchronized signal block is not aligned with a synchronized grid frequency; and the initial system acquisition is performed according to another received synchronized signal block aligned with a synchronized grid.

Example 16: FIG. 9 is a flowchart illustrating the operation of a user device according to an exemplary implementation. Operation 910 includes receiving a synchronization signal block through a user device in a wireless network. Operation 920 includes detecting that the synchronized signal block is aligned with the synchronization grid according to the presence of one of the remaining minimum system information (RMSI) schedule information in the synchronized signal block. And, operation 930 includes, by the user device, responding to the existence of the remaining minimum system information (RMSI) scheduling information in the synchronization signal block, and performing initial system acquisition based on the synchronization signal block.

Example 17: An apparatus comprising means for implementing a method of any one of Examples 1-16.

Example 18: A device includes at least one processor and at least one memory containing computer instructions, and the computer instructions, when executed by the at least one processor, cause the device to implement any one of the examples 1-16 a way.

Example 19: A device includes a computer program product that includes a non-transitory computer-readable storage medium and stores executable code that, when executed by at least one data processing device, is configured to cause the at least A data processing device implements a method of any one of Examples 1-16.

FIG. 10 is a block diagram of a wireless station (eg, AP, BS, relay node, eNB, UE, or user device) 1000 according to an exemplary implementation. The wireless station 1000 may include, for example, one or two RF (radio frequency) or wireless transceivers 1002A, 1002B, where each wireless transceiver includes a transmitter to transmit signals and a receiver to receive signals. The wireless station also includes a processor or control unit / entity (controller) 1004 to execute instructions or software and transmission and reception of control signals, and a memory 1006 to store data and / or instructions.

The processor 1004 may also make decisions or decisions, generate pictures, packets, or messages for transmission, decode received pictures or messages for further processing, and other tasks or functions described herein. The processor 1004 may be a baseband processor. For example, the processor 1004 may generate a message, a packet, a picture, or other signals for transmission via the wireless transceiver 1002 (1002A or 1002B). The processor 1004 may control the transmission of signals or messages via a wireless network, and may receive the signals, messages, etc. via a wireless network (eg, after down conversion by the wireless transceiver 1002, for example). The processor 1004 may be programmable and capable of executing software or other instructions stored in memory or on other computer media to perform various tasks and functions described above, such as one or more tasks or methods described above. The processor 1004 may be (or may include), for example, a programmable processor that is one of hardware, programmable logic, executing software or firmware, and / or any combination of these. Using other terms, the processor 1004 and the transceiver 1002 together can be considered a wireless transmitter / receiver system, for example.

In addition, referring to FIG. 10, a controller (or processor) 1008 can execute software and instructions, and can provide overall control for the wireless station 1000, and can provide control for other systems not shown in FIG. 10, such as control input / output A device (e.g., display, keypad), and / or software capable of executing one or more applications available on the wireless station 1000, such as, for example, an email program, audio / video application, text Processor, an Internet telephony application, or other application or software.

In addition, a storage medium may be provided that contains stored instructions that, when executed by a controller or processor, may cause the processor 1004, or other controller or processor, to implement one or more of the above Describe the function or work.

According to another exemplary implementation, the RF or wireless transceiver 1002A / 1002B can receive signals or data and / or send or transmit signals or data. The processor 1004 (and possibly the transceivers 1002A / 1002B) may control the RF or wireless transceivers 1002A or 1002B to receive, transmit, broadcast, or send signals or information.

However, the embodiment is not limited to a system intended to be used as an example, and persons skilled in the art can apply the solution to other communication systems. Another example of a suitable communication system is the 5G concept. It is assumed that the network architecture in 5G will be quite similar to the LTE-advanced network architecture. 5G may use a majority-input-most-output (MIMO) antenna, which has more base stations or nodes than LTE (a so-called small unit concept), including large sites operating in cooperation with small stations and may also use various Radio technology for better coverage and enhanced data rates.

It should be understood that future networks can use Network Function Virtualization (NFV), which is a network architecture concept that proposes to virtualize network node functions as "building blocks" or entities that are operationally connected or linked Together to provide service. A virtualized network function (VNF) may include one or more virtual machines that use standard or general-purpose servers instead of custom hardware to run computer code. Cloud computing or data storage can also be used. In radio communications, this means that the node operation can be performed, at least in part, on a server, host or node operatively coupled to a remote radio headpiece. It is also possible that node operations can be distributed among most servers, nodes, or hosts. It should also be understood that the labor allocation between core network operations and base station operations may be different from or even non-existent for LTE operators.

The construction of the various technologies described here can be performed by digital electronic circuits, or by computer hardware, firmware, software, or a combination of the foregoing. Building can be implemented as a computer program product, that is, a computer program that is embodied in an information carrier (for example, in a machine-readable storage device or in a transmission signal), and is processed by a data A device (for example, a programmable processor, a single computer, or a plurality of computers) executes or controls the operation of a data processing device (for example, a programmable processor, a single computer, or a plurality of computers). The implementation may also be provided on a computer-readable medium or computer-readable storage medium, which may be a non-transitory medium. The construction of various technologies may also include the provision of software installations via temporary signals or media, and / or programs, and / or software that may be downloaded over the Internet or other networks, wired networks and / or wireless networks. Build. In addition, builds can be provided via Machine-Type Communication (MTC) and also via an Internet of Things (IoT).

A computer program can be in the form of source code, object code, or some intermediate type, and the computer program can be stored on a carrier, distribution medium, or computer-readable medium, which can be any entity or device that carries the program ,in. Such carriers include a recording medium, computer memory, read-only memory, optoelectronic and / or electrical carrier signals, telecommunication signals, and software distribution packages, for example. Depending on the required processing power, the computer program can be executed on a single electronic digital computer or the computer program can be distributed among several computers.

In addition, the construction of the various technologies described herein can use a network entity system (CPS) (a system of computing elements that cooperatively control actual entities). CPS can enable the execution and utilization of a large number of interconnected ICT devices (sensors, actuators, processors, microcontrollers, ...) embedded in physical objects at different locations. Mobile network physical systems, in which the physical system in question has inherent mobility, are a sub-category of network physical systems. Examples of mobile physical systems include mobile robotics and electronics transmitted by humans or animals. The rise of the popularity of smartphones has increased interest in the field of mobile network physical systems. Accordingly, various implementations of the techniques described herein may be provided via one or more of these techniques.

A computer program, such as the computer program described above, can be written in any type of programming language, including compiled or interpreted languages, and can be used in any type, including as a standalone program or as a module, component, Subnormal, or other unit or part suitable for use in a computing environment. A computer program can be executed on one computer or on a plurality of computers in a single place or distributed across many places and interconnected by a communication network.

The method steps may be implemented by one or more programmable processors that execute a computer program or computer program portion to perform functions by operating on input data and generating output. The method steps can also be implemented by special purpose logic circuits, such as an FPGA (field programmable gate array) or an ASIC (application specific integrated circuit), and a device can be used as a special purpose logic circuit, such as an FPGA (Field programmable gate array) or an ASIC (application specific integrated circuit).

Processors suitable for the execution of a computer program include, by way of example, both general and special purpose microprocessors, and any one or more processors of any kind of digital computer, chip or chipset. Generally, a processor will receive instructions and data from a read-only memory or a random access memory or both. The components of a computer may include at least one processor for executing instructions and one or more memory devices for storing instructions and data. Generally, a computer may also include or be operatively coupled to receive data from one or more mass storage devices, such as magnetic disks, magneto-optical disks, or optical disks, or transmit data to One or more mass storage devices are used to store data, such as magnetic disks, magneto-optical disks, or optical disks, or both. Information carriers suitable for embodying computer program instructions and data include all types of non-electrical memory, including, for example, semiconductor memory devices, such as EPROM, EEPROM, and flash memory devices; magnetic disks, such as internal Hard disk or removable discs; magneto-optical discs; and CD-ROM and DVD-ROM discs. The processor and memory can be supplemented by, or incorporated in, special purpose logic circuits.

To provide interaction with a user, the implementation may be performed on a computer having a display device, such as a cathode ray tube (CRT) or liquid crystal display (LCD) monitor, to display information to the user, and A user interface, such as a keyboard and a pointing device, such as a mouse or a trackball, whereby the user can provide input to a computer. Other types of devices can also be used to provide interaction with a user; for example, the feedback provided to the user can be any type of sensory feedback, such as visual feedback, auditory feedback, or tactile feedback; and Input from the user can be received in any type, including audible, speech, or tactile input.

Building can be performed in a computing system that includes a back-end component, such as a data server, or the computing system includes an intermediate software component, such as an application server, or the computing device includes A front-end component, for example, a user computer having a graphical user interface or a web browser through which a user can interact with a building, or such back-end, middleware, or front-end Any combination of components. The components may be interconnected by any type or medium of digital data communication, such as a communication network. Examples of communication networks include a local area network (LAN) and a wide area network (WAN), such as the Internet.

Although the specific features of the illustrated construction have been disclosed as described herein, many modifications, substitutions, changes, and equivalents will now appear to those skilled in the art. Therefore, it will be understood that the accompanying claims are intended to cover all such modifications and variations to fall within the true spirit of the various embodiments.

130‧‧‧Wireless network

131, 132, 133, 135‧‧‧ user devices

134‧‧‧Base Station

Unit 136‧‧‧

150‧‧‧ Core Network

151‧‧‧S1 interface

200, 320‧‧‧Synchronized signal block (SS block)

220‧‧‧ Main synchronization signal (PSS)

222‧‧‧Assisted Synchronization Signal (SSS)

224‧‧‧Physical Broadcast Control Channel (PBCH)

226‧‧‧ Demodulation Reference Signal (DMRS)

310‧‧‧Resource Block (RB)

330‧‧‧frequency deviation / deviation

420‧‧‧The second type of SS block

430‧‧‧The first type of SS block

440‧‧‧Synchronized grid frequency

510, 520, 610, 620, 630, 640, 650, 710, 720, 730, 810, 820, 910, 920, 930‧‧‧ operation

1000‧‧‧Wireless Station

1002, 1002A, 1002B‧‧‧RF Transceiver / Wireless Transceiver

1004‧‧‧Processor

1006‧‧‧Memory

1008‧‧‧ Controller

FIG. 1 is a block diagram of a wireless network according to an exemplary implementation.

FIG. 2 is a diagram illustrating a synchronized signal block (SS block) constructed in accordance with an illustrative example.

FIG. 3 is a diagram illustrating a deviation between a synchronization signal (SS) block and a resource block of a channel resource block grid according to an exemplary implementation.

FIG. 4 is a diagram illustrating two types of synchronization signal blocks according to an exemplary implementation.

FIG. 5 is a flowchart illustrating the operation of a base station according to an exemplary construction.

FIG. 6 is a flowchart illustrating the operation of a base station according to another exemplary construction.

FIG. 7 is a flowchart illustrating the operation of a user equipment (UE) according to an exemplary implementation.

FIG. 8 is a flowchart illustrating the operation of a user equipment (UE) according to another exemplary implementation.

FIG. 9 is a flowchart illustrating the operation of a user equipment (UE) according to yet another exemplary implementation.

FIG. 10 is a block diagram of a node or wireless station (eg, base station / access point or mobile station / user device) according to an exemplary implementation.

Claims (19)

A method includes: selecting, by a base station in a wireless network, a type of synchronization signal block as a first type of synchronization signal block for initial system acquisition or synchronization for non-initial system acquisition A second type of synchronization signal block; and transmitting, through the base station, a synchronization signal block of the selected synchronization signal block type, the transmitted synchronization signal block containing information identifying the selected synchronization signal block Is the first synchronization signal block type or the second synchronization signal block type, and the synchronization grid alignment information for the synchronization signal block. The method of claim 1, further comprising determining a frequency of the synchronization grid and identifying at least one center frequency of the first type of synchronization signal block for acquisition by the initial system. The method of any of claims 1-2, wherein the synchronization grid alignment information for the synchronization signal block includes at least one of the following: a frequency offset for the synchronization signal block, Assuming that the type of the synchronization signal block is the first type of the synchronization signal block used for the initial system acquisition, the frequency deviation indication for the synchronization signal block is between an end edge of the synchronization signal block and a A frequency deviation between one resource block of a channel resource block grid; and information indicating whether the synchronization signal block is aligned with the synchronization grid, assuming that the synchronization signal block type is not used by the initial system acquisition Words of this second type of synchronization signal block. The method according to any one of claims 1-3, wherein the selected synchronized signal block is identified by the information of the first synchronized signal block type or the second synchronized signal block type, and the synchronized grid pair The quasi-information is provided in one of the main information blocks contained in a physical broadcast channel resource of one of the synchronization signal blocks. The method of any one of claims 1-4, wherein the transmitting includes at least one of the following: transmitting, via the base station, a first of the first synchronization signal block type for initial system acquisition A synchronization signal block, the first synchronization signal block is aligned with a synchronization grid frequency; and a second synchronization signal block type of the second synchronization signal block type for the initial system acquisition is transmitted through the base station A synchronization signal block, the second synchronization signal block is aligned with a frequency away from the synchronization grid frequency by at least a critical frequency or a critical number of subcarriers. A method includes: selecting, by a base station in a wireless network, a type of synchronization signal block as a first type of synchronization signal block for initial system acquisition or synchronization for non-initial system acquisition A second type of synchronization signal block; determining a frequency of a synchronization grid whose identification is used by the initial system for acquisition of at least one center frequency of the synchronization signal block of the first type; assuming the selected synchronization The signal block type is the first type of the synchronized signal block for the initial system acquisition, and the base station selects a frequency deviation for the first synchronized signal block of the selected synchronized signal block type. The frequency deviation indicates a frequency deviation between an edge of the first synchronization signal block and a resource block of a channel resource block grid; it is assumed that the selected synchronization signal block type is not used for initial system acquisition. If the second type of the synchronization signal block is used, the base station is used to select whether the first synchronization signal block will be aligned with the synchronization grid; and transmitting the first synchronization signal including information. The information identifies the type of the synchronization signal block and indicates the frequency deviation. Assuming that the selected synchronization signal block type is the first type of the synchronization signal block for the initial system acquisition, or indicates the first Whether a synchronization signal block will be aligned with the synchronization grid, assuming that the selected synchronization signal block type is not the second type of the synchronization signal block for the initial system acquisition. A method includes: receiving, through a user device in a wireless network, a synchronized signal block, the synchronized signal block including identifying the synchronized signal block as a first type of synchronization for initial system acquisition Information of a synchronized signal block or a second type of synchronized signal block not used for initial system acquisition, and synchronized grid alignment information for the synchronized signal block; and based on the user device based on the Determining at least one of the type of the synchronization signal block and the synchronization grid alignment information that the synchronization signal block is aligned with a synchronization grid; and based on the synchronization signal by the user device The block implements the initial system acquisition. The method as claimed in item 7: wherein one of the first type of synchronization signal blocks for initial system acquisition is placed on a frequency of the synchronization grid for initial system acquisition; wherein non-initial system acquisition A second type of synchronization signal block is not placed on a frequency of the synchronization grid; and one or more frequencies of the synchronization grid correspond to a user device searching for a synchronization signal block To perform the initial system capture. A method includes: receiving, through a user device in a wireless network, a synchronized signal block, the synchronized signal block including identifying the synchronized signal block as a first type of synchronization for initial system acquisition Information of a synchronized signal block or a second type of synchronized signal block that is not used by the initial system for acquisition, and synchronized grid alignment information for the synchronized signal block; and through the user device, if Perform initial system acquisition based on the synchronized signal block if at least one of the following conditions exists: the synchronized signal block is the first type of synchronized signal block for initial system acquisition; and the synchronized signal block The second type of synchronization signal block is not used for initial system acquisition and the synchronization grid alignment information indicates that the synchronization signal block is aligned with the synchronization grid. The method of claim 9, wherein a frequency of the synchronization grid identifies a center frequency for the synchronization signal block. Assume that the synchronization signal block is the first type of synchronization for the initial system acquisition. The signal block, and its use for the synchronization signal block, it is assumed that the synchronization signal block is not the second type of synchronization signal block for initial system acquisition, and it is assumed that the synchronization grid alignment information indicates the The synchronization signal block is aligned with the synchronization grid. The method of any of claims 9-10, wherein the synchronization grid alignment information for the synchronization signal block includes at least one of the following: a frequency deviation for the synchronization signal block, Assuming that the type of the synchronization signal block is the first type of the synchronization signal block used for the initial system acquisition, the frequency deviation indication for the synchronization signal block is between an end edge of the synchronization signal block and a A frequency deviation between one resource block of a channel resource block grid; and information indicating whether the synchronization signal block is aligned with the synchronization grid, assuming that the synchronization signal block type is not used for synchronization by the initial system acquisition Words of this second type of signal block. The method of any one of claims 9-11, wherein the selected synchronized signal block is identified by the information of the first synchronized signal block type or the second synchronized signal block type, and the synchronized grid pair The quasi-information is provided in one of the main information blocks contained in a physical broadcast channel resource of one of the synchronization signal blocks. The method of any of claims 9-12, wherein implementing the initial system acquisition comprises performing frequency synchronization based on the synchronization signal block. The method of any one of claims 9-13, wherein the synchronization signal block type is the first type of synchronization signal block for initial system retrieval, and wherein the synchronization signal block is used for the synchronization The synchronization grid alignment information includes: a frequency deviation for the synchronization signal block, and the frequency deviation for the synchronization signal block indicates that it is between an edge of the synchronization signal block and a channel resource block grid A frequency deviation between a resource block; the method further comprises: determining, by the user device, a resource block alignment for a resource block of the channel resource block grid based on the frequency deviation; and based on the resource block Alignment sends or receives information via one or more channel resource blocks. The method of any one of claims 9-14, wherein, by the user device, performing the initial system acquisition based on the synchronization signal block further includes: the user device, during an initial unit selection process, Detecting that the received synchronization signal block does not carry a valid remaining minimum system information (RMSI) schedule information; and based on the detection by the user device, determining (or assuming) that the received synchronization signal block is not Aligning a synchronized grid frequency; and performing an initial system acquisition based on another received synchronized signal block aligned to a synchronized grid. A method includes: receiving a synchronization signal block through a user device in a wireless network; and detecting the synchronization based on the presence of one of the remaining minimum system information (RMSI) scheduling information in the synchronization signal block The signal block is aligned by the synchronization grid; and the user device responds to the existence of the remaining minimal system information (RMSI) schedule information in the synchronization signal block, and implements the initialization based on the synchronization signal block. System capture. An apparatus comprising means for implementing the method of any of claims 1-16. A device includes at least one processor and at least one memory containing computer instructions. When the computer instructions are executed by the at least one processor, the device causes the device to implement any of the methods of claim 1-16. A device comprising a computer program product, the computer program product comprising a non-transitory computer-readable storage medium and storing executable code, the executable code, when executed by at least one data processing device, is configured to cause the At least one data processing device implements the method of any one of claims 1-16.