CN114765517B

CN114765517B - Initial access parameter determination method and related device in high-frequency band unlicensed spectrum

Info

Publication number: CN114765517B
Application number: CN202110073735.7A
Authority: CN
Inventors: 周化雨; 潘振岗
Original assignee: Spreadtrum Communications Shanghai Co Ltd
Current assignee: Spreadtrum Communications Shanghai Co Ltd
Priority date: 2021-01-15
Filing date: 2021-01-20
Publication date: 2024-08-16
Anticipated expiration: 2041-01-20
Also published as: CN114765517A; WO2022151948A1

Abstract

The application provides a method for determining initial access parameters in a high-frequency band unlicensed spectrum and a related device, wherein the method comprises the following steps: and determining the subcarrier spacing and/or the number of physical resource blocks PRBs of CORESET. The embodiment of the application solves the problem that the subcarrier spacing and the PRB number of CORESET0 indicated by MIB in the high-frequency unlicensed spectrum can not meet the OCB requirement.

Description

Initial access parameter determination method and related device in high-frequency band unlicensed spectrum

Technical Field

The application relates to the technical field of wireless communication, in particular to a method and a related device for determining initial access parameters in a high-frequency-band unlicensed spectrum.

Background

Currently, the subcarrier spacing of control resource set0 (Control Resource Set, coreset0) indicated by the master information block (Master Information Block, MIB) and the number of physical resource blocks (Physical Resource Block, PRB) do not meet the occupied channel bandwidth portion (Occupied Channel Bandwidth, OCB) requirement of the high-band unlicensed spectrum. Therefore, how to design the subcarrier spacing and the number of PRBs of CORESET0 and design the subcarrier spacing and the frequency domain position of the initial active bandwidth part is a problem to be solved.

Disclosure of Invention

The application provides a method and a related device for determining initial access parameters in a high-frequency unlicensed spectrum, aiming at solving the problem that the subcarrier spacing and the PRB number of CORESET0 indicated by MIB in the high-frequency unlicensed spectrum cannot meet the OCB requirement.

In a first aspect, an embodiment of the present application provides a method for determining CORESET parameters, including:

And determining the subcarrier spacing and/or the number of physical resource blocks PRBs of CORESET.

It can be seen that, in the embodiment of the present application, the terminal determines that the subcarrier spacing and/or the PRB number of CORESET0 can meet the OCB requirement of the high-band unlicensed spectrum.

In a second aspect, an embodiment of the present application provides a method for determining a bandwidth part parameter, including:

Subcarrier spacing and/or frequency locations of the first class bandwidth portions are determined.

It can be seen that, in the embodiment of the present application, the subcarrier spacing and/or the frequency location of the first class bandwidth portion determined by the terminal can meet the OCB requirement of the high-band unlicensed spectrum.

In a third aspect, an embodiment of the present application provides a device for determining CORESET parameters, including:

And the determining unit is used for determining the subcarrier interval and/or the PRB number of CORESET 0.

In a fourth aspect, an embodiment of the present application provides a device for determining a bandwidth part parameter, including:

A determining unit, configured to determine a subcarrier spacing and/or a frequency position of the first type bandwidth part.

In a fifth aspect, embodiments of the present application provide a terminal, a processor, a memory, and one or more programs stored in the memory and configured to be executed by the processor, the programs comprising instructions for performing the steps in the method according to the first or second aspect.

In a sixth aspect, embodiments of the present application provide a computer-readable storage medium storing a computer program for electronic data exchange, wherein the computer program causes a computer to execute instructions of steps in a method according to the first or second aspect.

In a seventh aspect, an embodiment of the present application provides a chip, where the chip is configured to determine a subcarrier spacing and/or a number of physical resource blocks PRB of CORESET 0.

In an eighth aspect, an embodiment of the present application provides a chip module, including a transceiver component and a chip, where the chip is configured to determine a subcarrier spacing of CORESET0 and/or a number of physical resource blocks PRB.

In a ninth aspect, embodiments of the present application provide a chip for determining subcarrier spacing and/or frequency locations of a first type of bandwidth portion.

In a tenth aspect, an embodiment of the present application provides a chip module, including a transceiver component and a chip, where the chip is configured to determine a subcarrier spacing and/or a frequency location of a first class of bandwidth portion.

Drawings

In order to more clearly illustrate the embodiments of the application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1a is a block diagram of a mobile communication system 100 according to an embodiment of the present application;

FIG. 1b is a schematic diagram of an SSB candidate location distribution provided by an embodiment of the present application;

Fig. 1c is a schematic structural diagram of a terminal 120 according to an embodiment of the present application;

FIG. 2 is a flowchart of a method for determining CORESET a parameter according to an embodiment of the present application;

fig. 3 is a flow chart of a method for determining a bandwidth part parameter according to an embodiment of the present application;

Fig. 4 is a functional unit block diagram of a CORESET a parameter determination device 4 according to an embodiment of the present application;

FIG. 5 is a block diagram showing the functional units of another CORESET parameter determination device 5 according to an embodiment of the present application;

Fig. 6 is a functional unit block diagram of a bandwidth part parameter determining apparatus 6 according to an embodiment of the present application;

Fig. 7 is a functional unit block diagram of another bandwidth part parameter determining apparatus 6 according to an embodiment of the present application.

Detailed Description

In order that those skilled in the art will better understand the present application, a technical solution in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

The terms first, second and the like in the description and in the claims and in the above-described figures are used for distinguishing between different objects and not necessarily for describing a sequential or chronological order. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those listed steps or elements but may include other steps or elements not listed or inherent to such process, method, article, or apparatus.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.

The embodiment of the application provides a method for determining initial access parameters in a high-frequency band unlicensed spectrum and a related device, and the embodiment of the application is described in detail below with reference to the accompanying drawings.

Referring to fig. 1a, fig. 1a is a block diagram of a mobile communication system 100 according to an embodiment of the application. The mobile communication system 100 comprises a network device 110 on the access network side and a terminal 120 on the user side, wherein the network device 110 is in communication connection with the terminal 120.

Network device 110 is deployed in a radio access network to provide wireless access functionality for terminal 120. The network device may be a Base Station (BS). Network device 110 may communicate wirelessly with terminal 120 via one or more antennas. Network device 110 may provide communication coverage for the geographic area in which it is located. The base stations may include macro base stations, micro base stations, relay stations, access points, and the like. In some embodiments, a base station may be referred to by those skilled in the art as a base station transceiver, a radio base station, an access point, a radio transceiver, a Basic service set (Basic SERVICE SET, BSS), an Extended service set (Extended SERVICE SET, ESS), a node B (NodeB), an evolved NodeB (eNB or eNodeB), or some other suitable terminology. Illustratively, in a 5G system, the base station is referred to as a gNB. For convenience of description, in the embodiment of the present application, the above-mentioned devices for providing the wireless communication function for the terminal 120 are collectively referred to as a network device.

Terminals 120 may be dispersed throughout the mobile communication system, and each terminal 120 may be stationary or mobile. Terminal 120 can also be referred to by those skilled in the art as a mobile station, a subscriber station, a mobile unit, a subscriber unit, a wireless unit, a remote unit, a mobile device, a user device, a wireless communication device, a remote device, a mobile subscriber station, an access terminal, a mobile terminal, a wireless terminal, a remote terminal, a handheld device, a user agent, a mobile client, a client, or some other suitable terminology. The terminal 120 may be a cellular telephone, personal digital assistant (Personal DIGITAL ASSISTANT, PDA), wireless modem, wireless communication device, handheld device, tablet, laptop, cordless telephone, wireless local loop (Wireless Local Loop, WLL) station, or the like. The terminal 120 is capable of communicating with the network device 110 in the mobile communication system.

The network device 110 and the terminal 120 may communicate with each other via an air interface technology, such as via cellular technology. The communication link between network device 110 and terminal 120 may include: a Downlink (DL) transmission from the network device 110 to the terminal 120, and/or an Uplink (UP) transmission from the terminal 120 to the network device 110. The downlink transmission may also be referred to as a forward link transmission and the uplink transmission may also be referred to as a reverse link transmission. In some examples, the downlink transmission may include transmission of a discovery signal, which may include a reference signal and/or a synchronization signal.

As shown in the schematic structural diagram of the terminal 120 in fig. 1c, the terminal 120 provided in the embodiment of the present application includes a processor 121, a memory 122, a communication interface 123, and one or more programs 122a, where the one or more programs 122a are stored in the memory 122 and configured to be executed by the processor 121, and the program 122a includes a method for executing the method described in the embodiment of the method of the present application.

The mobile communication system shown in fig. 1a may be a long term evolution (Long Term Evolution, LTE) system, a next generation evolution system based on the LTE system, such as an LTE-a (LTE-Advanced) system or a fifth generation (5th Generation,5G) system (also called NR system), a next generation evolution system based on a 5G system, and so on. In embodiments of the present application, the terms "system" and "network" are often used interchangeably, but the meaning will be understood by those skilled in the art.

The communication system and the service scenario described in the embodiments of the present disclosure are for more clearly describing the technical solution of the embodiments of the present disclosure, and are not limited to the technical solution provided by the embodiments of the present disclosure, and those skilled in the art can know that, with the evolution of the communication system and the appearance of a new service scenario, the technical solution provided by the embodiments of the present disclosure is applicable to similar technical problems.

In a conventional LTE system, data transmission is performed between the network device 110 and the terminal 120 through a licensed spectrum. As traffic increases, especially in some urban areas, licensed spectrum may be difficult to meet the demand for traffic. By introducing licensed assisted access (Licensed-ASSISTED ACCESS, LAA) technology, data transmission between the network device 110 and the terminal 120 through unlicensed spectrum can be enabled, meeting larger traffic demands.

Unlicensed spectrum is a nationally and regionally divided spectrum that can be used for radio communications and is generally considered to be a shared spectrum, i.e., communication devices in different communication systems can use the spectrum as long as the regulatory requirements set by the country or region on the spectrum are met, without requiring a proprietary spectrum license to be applied to the government. Unlicensed spectrum may also be referred to by those skilled in the art as unlicensed spectrum, shared spectrum, unlicensed band, shared band, unlicensed spectrum, unlicensed band, or some other suitable terminology.

The third generation partnership project (Third Generation Partnership Project,3 GPP) is discussing NR unlicensed technology for communicating over unlicensed spectrum using NR technology. For NR unlicensed technology, the synchronization signal block (Synchronization Signal Block, SSB) also needs to be sent. SSB may be used for synchronization and measurement of the terminal 120 in a non-independent networking (non standalone) mode, and may also be used for initial access of the terminal 120 in an independent networking (standalone) mode.

In Rel-15 NR, the synchronization signal and the broadcast channel form a synchronization signal block, so that the function of scanning beams is introduced. Through the primary synchronization signal (Primary Synchronization Signal, PSS) and the SSS secondary synchronization signal (Secondary Synchronization Signal, SSS), the user equipment obtains time-frequency synchronization of a cell and obtains the physical layer cell ID of the cell, a process commonly referred to as cell search (CELL SEARCH). The PSS, SSS and physical broadcast channel (Physical Broadcast Channel, PBCH) constitute an SS/PBCH block. Each synchronization signal block has a predetermined time domain position. The time domain position may also be referred to as a candidate synchronization signal block. The plurality of synchronization signal blocks constitute one SS-burst. The plurality of synchronization signal blocks form a synchronization signal burst. The plurality of synchronization signal bursts constitutes one SS-burst-set. The time domain position of the Lmax synchronization signal blocks is fixed within a 5ms window. The time domain position indexes of the Lmax synchronous signal blocks are arranged continuously from 0 to Lmax-1. The transmission instant of a synchronization signal block within this 5ms window is therefore fixed, as is the index. In general, when the base station transmits the synchronization signal block, a beam scanning (beam sweeping) manner is adopted, that is, the base station transmits the synchronization signal block at different time domain positions through different beams, and accordingly, the user equipment can measure the different beams and sense on which beam the received signal is strongest.

In the time domain, one SSB occupies 4 symbols (i.e., orthogonal frequency division multiplexing (Orthogonal Frequency Division Multiplexing, OFDM) symbols), including: a primary synchronization signal of 1 symbol (Primary Synchronized Signal, PSS), a secondary synchronization signal of 1 symbol (Secondary Synchronized Signal, SSS) and a physical broadcast channel of 2 symbols (Physical Broadcast Channel, PBCH). Within SSB, symbols are numbered from 0 to 3 in ascending order. In the frequency domain, one SSB occupies 24 consecutive Resource Blocks (RBs). Each RB includes 12 subcarriers, and the subcarriers in the above 24 RBs are numbered from 0 to 287 in ascending order, starting with the lowest numbered RB. For PSS and SSS, the resource maps to the middle 127 th subcarrier; for the PBCH, the resources are mapped to the 288 th subcarrier. PSS, SSS, PBCH have the same Cyclic Prefix (CP) length and subcarrier spacing. The subcarrier spacings may be configured to 15kHz, 30kHz, 120kHz and 240kHz.

The network device may transmit signals using an omni-directional beam or may transmit signals using multiple directional beams. That is, the number of beams employed by the network device may be 1 or more. In the current NRU (5G NR-U,5G NewRadio in Unlicensed Spectrum is a 5G air interface operating in unlicensed frequency band, the frequency spectrum that can be used without being authorized by the regulatory authorities under the condition of meeting the regulatory rules) the network device can use at most 8 directional beams, and generally uses an even number of directional beams, so the number of beams used by the network device is generally 1,2, 4, 8. When the number is 1, the beams adopted by the network equipment are omni-directional beams, and the range of 360 degrees is covered, or the range of less than 360 degrees determined according to the actual environment is covered. When the number is plural, the beams employed by the network device are directional beams, all of which together cover a 360 degree range, each beam covering a 360/n range, where n is the number of beams. For example, when the number of beams is 4, each beam covers 90 degrees.

Because the frequency band used by NRU is high, signals are mostly transmitted using directional beams. When the network device transmits signals using directional beams, the network device needs to sequentially transmit the same information using a plurality of beams of different directions in order to cover all cells configured on the network device, which may be referred to as beam scanning.

To support beam scanning, SSBs are organized into a series of bursts (bursts) and sent periodically. For the case of beam scanning, in each SSB period, the network device may send SSBs by using respective beams in turn, and multiple SSBs sent in each SSB period form a Burst, where the SSBs may be numbered in ascending order from 0. The number of SSBs in one Burst may be the same as the number of beams employed by the network device, and SSBs in one Burst are transmitted using different beams, respectively.

Within each SSB period, there are multiple SSB candidate locations, which are time domain locations where the network device may send SSBs. These SSB candidate locations may be numbered in ascending order starting from 0. Fig. 1b schematically shows an SSB candidate position distribution diagram. As shown in fig. 1b, taking a 30KHz subcarrier spacing as an example, there are 20 SSB candidate locations within a field (5 ms). 1ms includes 2 slots (slots), each slot includes 2 SSB candidate positions, so that 20 SSB candidate positions are included in 5ms, the 20 SSB candidate positions are numbered in ascending order from 0, and indexes of the 20 candidate positions are respectively 0-19.

In NR, generally, a UE is a UE supporting a bandwidth of 100 MHz. And when the UE is initially accessed, PSS/SSS/PBCH in the blind detection synchronous signal block is used for obtaining MIB and time index information carried in the PBCH. The UE obtains the configuration of CORESET (may be referred to as CORESET 0) and SEARCH SPACE SET (may be referred to as SEARCH SPACE 0 or SEARCH SPACE SET 0) of the scheduling SIB1 through the information in the MIB, and further, the UE may monitor Type0-PDCCH of PDSCH of the scheduling bearing SIB1 and decode SIB1. Since the bandwidth of CORESET0 is set by a table within the PBCH, the maximum bandwidth of CORESET0 is implicitly defined in the protocol. Further, the protocol specifies that the frequency domain resources of PDSCH carrying SIB1 are within the bandwidth (PRBs) of CORESET0, so the maximum bandwidth of PDSCH carrying SIB1 is also implicitly defined in the protocol. In fact, in idle state, the UE operates within an initial active downlink BWP (INITIAL ACTIVE DL BWP) whose frequency domain location is the same as that of CORESET by default (the frequency domain location of the initial active downlink BWP may be modified by signaling to cover the frequency domain location of CORESET by default), so that the maximum bandwidth of the initial active downlink BWP is implicitly defined in the protocol.

CORESET and SEARCH SPACE SET in Rel-15 NR, typically SEARCH SPACE SET (set of search spaces) contain properties of the PDCCH such as listening occasion, search space type, etc. The listening occasion of the PDCCH includes a period and offset of a slot level of listening, a start symbol within a slot, etc. SEARCH SPACE SET will typically bind CORESET (Control Resource Set, set of control resources). CORESET contains the properties of the PDCCH, such as frequency domain resources and duration (number of symbols). One PDCCH consists of one or more control channel elements ccs. One PDCCH consists of n ccs, and its aggregation level is n. One CCE consists of 6 resource element groups REGs. One REG is equal to one Resource Block (RB) within one orthogonal frequency division multiplexing OFDM symbol. REGs in one CORESET is numbered from small to large in a time-preferential manner, and number 0 corresponds to the first OFDM symbol and the lowest numbered resource block in CORESET. One CORESET is associated to one CCE-to-REG map. The CCE-to-REG mapping in one CORESET may be interleaved or non-interleaved and is described by REG bundles:

The ith REG bundle is defined as REGs, numbered { iL, iL+1,.. Sub.iL+L-1 }, where L is the number of REG bundles, AndThe number of REGs in CORESET.

-The j-th CCE consists of REG bundles numbered { f (6 j/L), f (6 j/l+1) }, f (6 j/l+6/L-1), where f (·) is an interleaver.

For non-interleaved CCE-to-REG mapping, l=6, and f (x) =x.

For an interleaved CCE-to-REG mapping, L.epsilon.2, 6 forAndFor the followingThe interleaver is defined as:

x＝cR+r

r＝0,1,…,R-1

c＝0,1,…,C-1

where R.epsilon. {2,3,6}.

Because of the limited capacity of the PBCH in the SSB, the system information included in the SSB is only a portion of the total system information required by the terminal to randomly access the network device, which may include the master information block (Master Information Block, MIB), while another portion of the total system information required by the terminal to access the network device is contained in the remaining minimum system information RMSI (which may also be referred to as SIB 1), RMSI is periodically transmitted by the network device, RMSI transmitted over the PDSCH. Therefore, in order to enable initial access, the terminal also needs to determine CORESET a time domain position where the PDCCH associated with RMSI is located according to the time domain position corresponding to the SSB, search RMSI the PDCCH associated with CORESET, and obtain RMSI in the PDSCH according to the control information in the searched PDCCH. After the terminal obtains the system information in the SSB and RMSI, the terminal can access the network according to the system information in the SSB and RMSI. Here, the PDCCH associated with RMSI refers to a PDCCH carrying RMSI control information.

Currently, the standardization of unlicensed spectrum in the low frequency band has been partially completed, and the standardization of unlicensed spectrum in the high frequency band is underway. Currently, in unlicensed spectrum, it is often necessary to meet the requirements of occupying the channel bandwidth portion (Occupied Channel Bandwidth, OCB), i.e., the physical layer signal/channel transmission needs to occupy at least 70% of the channel bandwidth for each of the declared (declared) typical (nominal) channel bandwidths. In the high frequency band (e.g., 52.6 GHz-71 GHz), a typical channel bandwidth of 2160MHz may be declared, with a corresponding 70% of the channel bandwidth of 1512MHz. In the high frequency band, candidate subcarrier spacings are 120kHz, 240kHz, 480kHz and 960kHz. If the FFT size is not changed (e.g., 4096) and the maximum number of subcarriers within the channel bandwidth is not changed (e.g., 3300), then subcarrier spacing 480kHz or 960kHz can meet the OCB requirement (because 480kHz or 960kHz times the number of subcarriers 3300 may be greater than or equal to 1512 MHz), while subcarrier spacing 120kHz or 240kHz cannot meet the OCB requirement (because 120kHz or 240kHz times the number of subcarriers 3300 may not be greater than or equal to 1512 MHz).

During the initial cell search, the base station indicates the configuration of control resource set zero (Control Resource Set, coreset0) including the number of physical resource blocks (Physical Resource Block, PRB) of CORESET0 and the subcarrier spacing through a master information block (Master Information Block, MIB). The number of PRBs of CORESET0 is the same as that of the initial active bandwidth portion, and the subcarrier spacing of CORESET0 is the same as that of the initial active bandwidth portion.

It can be seen that the subcarrier spacing and the number of PRBs of CORESET0 indicated by the MIB at present cannot meet the OCB requirement of the unlicensed spectrum in the high-band. Therefore, how to design CORESET0 and/or the subcarrier spacing and PRB number of the initial active bandwidth portion is a challenge.

In view of the foregoing, an embodiment of the present application provides a method for determining an initial access parameter in a high-band unlicensed spectrum, which is described in detail below.

Referring to fig. 2, fig. 2 is a flowchart of a method for determining CORESET a parameter according to an embodiment of the present application, which is applied to the terminal 120 shown in fig. 1a, and includes the following steps:

In step 201, the terminal determines the subcarrier spacing and/or the number of physical resource blocks PRB of CORESET.

In unlicensed spectrum, 1 bit indicating a subcarrier spacing of CORESET0 is used for other purposes and the subcarrier spacing of CORESET0 is default. In unlicensed spectrum in the high-band, it is also desirable that the subcarrier spacing of CORESET0 be default. To meet the OCB requirement, the subcarrier spacing of CORESET0 may default to 480kHz or 960kHz.

Further, the subcarrier spacing of the synchronization signal block may be preset with the subcarrier spacing of CORESET to have a default binding relationship, so that when the terminal blindly detects the subcarrier spacing of the synchronization signal block or confirms the subcarrier spacing of the synchronization signal block according to the frequency band, the terminal may determine the subcarrier spacing of CORESET.

In one possible example, the determining the CORESET a subcarrier spacing of 0 includes: and determining the subcarrier interval of CORESET0 according to the subcarrier interval of the synchronous signal block.

In this possible example, when the subcarrier spacing of the synchronization signal block is 120kHz, the subcarrier spacing of CORESET0 is 480kHz.

It can be seen that in this example, the system can reuse the existing 120kHz synchronization signal block design.

In this possible example, when the subcarrier spacing of the synchronization signal block is 240kHz, the subcarrier spacing of CORESET0 is 960kHz.

It can be seen that in this example, the system can reuse the existing 240kHz synchronization signal block design.

In one possible example, the determining the number of physical resource blocks PRBs of CORESET s0 includes: and determining CORESET0 PRB number according to the indication information.

It can be seen that, in this example, the terminal determines CORESET the number of PRBs of 0 through the indication information, which can improve flexibility.

In this possible example, the number of PRBs of CORESET's 0 is a multiple of 6, and the corresponding bandwidth is greater than or equal to 1512MHz.

It can be seen that in this example, the resource unit satisfying CORESET is 6 PRBs, and the OCB requirement is satisfied.

In this possible example, when the subcarrier spacing of CORESET0 is 480kHz, the number of PRBs of CORESET0 is a multiple of 6, and the corresponding bandwidth is greater than or equal to 1512MHz. This may result in CORESET0 corresponding bandwidths greater than or equal to 1512MHz, and the number of PRBs of CORESET0 being a multiple of 6.

In this possible example, when the subcarrier spacing of CORESET0 is 480kHz, the number of PRBs of CORESET0 is greater than or equal to 264.

In this possible example, when the subcarrier spacing of CORESET0 is 960kHz, the number of PRBs of CORESET0 is a multiple of 6, and the corresponding bandwidth is greater than or equal to 1512MHz. This may result in CORESET0 corresponding bandwidths greater than or equal to 1512MHz, and the number of PRBs of CORESET0 being a multiple of 6.

In this possible example, when the subcarrier spacing of CORESET0 is 960kHz, the number of PRBs of CORESET0 is greater than or equal to 132.

Referring to fig. 3, fig. 3 is a flowchart of a method for determining a bandwidth part parameter according to an embodiment of the present application, which is applied to the terminal 120 shown in fig. 1a, and includes the following steps:

In step 301, the terminal determines subcarrier spacing and/or frequency locations of the first class bandwidth portions. The frequency position may be a frequency starting point and a bandwidth, or may be a center frequency point position and a bandwidth, or may be a reference frequency point position and a bandwidth. In general, the frequency position may be represented by a PRB starting point and number, or may be represented by a center PRB position and number, or may be represented by a reference PRB position and number.

In one possible example, the first type of bandwidth portion is an initial active bandwidth portion or a reconfigured initial active bandwidth portion. In general, the initial active bandwidth portion may be an initial active bandwidth portion of the MIB configuration. In general, the reconfigured initial active bandwidth portion may be an SIB1 reconfigured initial active bandwidth portion, e.g., reconfigured with serving cell common information ServingCellConfigCommonSIB.

In one possible example, the first type of bandwidth part is a bandwidth part with a bandwidth part index of 0 or a reconfigured bandwidth part with a bandwidth part index of 0. In general, a bandwidth portion with a bandwidth portion index of 0 may be an initially active bandwidth portion of a SIB1 reconfiguration or other higher layer signaling configuration.

In one possible example, the first type of bandwidth portion is a bandwidth portion with a bandwidth portion index other than 0. In general, a bandwidth portion with a bandwidth portion index other than 0 may be a non-initially active bandwidth portion of a SIB1 configuration or other higher layer signaling configuration. In general, a bandwidth portion having a bandwidth portion index other than 0 may be a bandwidth portion having a bandwidth portion index greater than 0.

In a specific implementation, the terminal may acquire the configuration of the initial active bandwidth part (or the bandwidth part with the bandwidth part index of 0) through the MIB, and then acquire the system information block one (System Information Block 1, sib1) in the initial active bandwidth part. Typically, the initial active bandwidth portion uses a subcarrier spacing of 120 kHz. One way, the configuration of the reconfiguration initial activation bandwidth part or the bandwidth part with the bandwidth part index of 0 is acquired through SIB1, and the configuration is switched to the reconfiguration initial activation bandwidth part or the bandwidth part with the bandwidth part index of 0. The system changes less by adopting the mode of reconfiguring the initial activated bandwidth part or the bandwidth part with the index of the bandwidth part of 0 in the SIB 1. Alternatively, the configuration of the bandwidth part with the bandwidth part index other than 0 is acquired through SIB1, and the configuration is switched to the bandwidth part with the bandwidth part index other than 0. The bandwidth part index of the SIB1 configuration is not 0, and the flexibility is higher.

In this possible example, the method further includes: after SIB1 is acquired, switching to or activating the first type bandwidth part.

Currently, after acquiring SIB1, the terminal can confirm a new frequency location of the initial active bandwidth portion, but the new frequency location needs to be validated (mainly for the connection state) after Msg 4. In the unlicensed spectrum of the high-band, in order to meet the OCB requirement, the effective time of the new frequency location may be advanced until SIB1 is acquired, so that when the base station transmits OSI/RAR/paging idle state information, the OCB requirement may also be met.

In one manner, the first type of bandwidth portion may be a reconfigured initial active bandwidth portion or a bandwidth portion with a bandwidth portion index of 0. This approach applies to switching to reconfiguring an initially active bandwidth portion or a bandwidth portion with a bandwidth portion index of 0.

In another manner, the first type of bandwidth portion may be a configured bandwidth portion with a bandwidth portion index other than 0. This approach applies to switching to bandwidth portions with a configured bandwidth portion index other than 0.

In another manner, the first type of bandwidth part may be a reconfigured initially activated bandwidth part or a bandwidth part with a bandwidth part index of 0, or may be a configured bandwidth part with a bandwidth part index other than 0. SIB1 may reconfigure an initially active bandwidth portion or a bandwidth portion with a bandwidth portion index of 0, and simultaneously configure a bandwidth portion with a bandwidth portion index other than 0, and then indicate, through a field, a bandwidth portion that needs to be switched currently, for example, an index indicating a bandwidth portion (for example, a first active downlink bandwidth portion-Id firstActiveDownlinkBWP-Id). After acquiring SIB1, the terminal switches or activates the first type bandwidth part according to the indicated bandwidth part (or index) to which switching and/or activation is required.

In this possible example, the method further includes: after acquiring a random access response (Random Access Response, RAR), switching to or activating the first class bandwidth portion.

In this possible example, the method further includes: after acquiring the paging message or after acknowledging that it is paged, switching to or activating the first type bandwidth part.

In this possible example, the method further includes: after retrieving Message 4 (Message 4, msg 4), the first class bandwidth portion is switched to or activated.

In this possible example, the determining the subcarrier spacing of the first type of bandwidth part includes: the subcarrier spacing of the first class bandwidth part is determined by SIB 1. Thus, the subcarrier spacing of CORESET0 is still configured by the MIB, and only SIB1 needs to be modified, simplifying the system.

In this possible example, the determining the subcarrier spacing and the frequency location of the first class bandwidth portion includes: the subcarrier spacing and frequency location of the first class bandwidth part are determined by SIB 1. Thus, the OCB requirement can be satisfied by the subcarrier spacing and frequency location (including bandwidth) of the reconfigured first class bandwidth portion.

In this possible example, the method further includes: receiving within the first class of bandwidth portions at least one of: other system information (Other System Information, OSI), RAR messages, paging messages.

In this possible example, the method further includes: receiving within the first class of bandwidth portions at least one of: msg4.

Thus, the terminal receives SIB1 in the initial active bandwidth portion corresponding to CORESET0, but receives other information, such as OSI/RAR/Paging/Msg4, etc., in the initial active bandwidth portion reconfigured by SIB1, so that the base station can easily transmit signals to meet the OCB requirement.

The embodiment of the application provides a CORESET parameter determining device, and the CORESET parameter determining device can be a terminal. Specifically, the CORESET parameter determining device is configured to perform the steps performed by the terminal in the above CORESET parameter determining method. The CORESET parameter determining device provided by the embodiment of the application can comprise modules corresponding to the corresponding steps.

The embodiment of the application can divide the function modules of the CORESET parameter determining device according to the method example, for example, each function module can be divided corresponding to each function, or two or more functions can be integrated in one processing module. The integrated modules may be implemented in hardware or in software functional modules. The division of the modules in the embodiment of the application is schematic, only one logic function is divided, and other division modes can be adopted in actual implementation.

Fig. 4 shows a possible configuration of the CORESET parameter determination device according to the above embodiment, in the case of dividing the respective functional modules by the respective functions. As shown in fig. 4, the CORESET a 0 parameter determining device 4 is applied to a terminal; the device comprises:

a determining unit 40, configured to determine a subcarrier spacing and/or a frequency position of CORESET a.

In one possible example, in the determining the subcarrier spacing of CORESET0, the determining unit 40 is specifically configured to: and determining the subcarrier interval of CORESET0 according to the subcarrier interval of the synchronous signal block.

In one possible example, when the subcarrier spacing of the synchronization signal block is 120kHz, the subcarrier spacing of CORESET0 is 480kHz.

In one possible example, when the subcarrier spacing of the synchronization signal block is 240kHz, the subcarrier spacing of CORESET0 is 960kHz.

In one possible example, in the determining the number of physical resource blocks PRBs of CORESET0, the determining unit 40 is specifically configured to determine, according to the indication information, the number of PRBs of CORESET 0.

In one possible example, the number of PRBs of CORESET's 0 is a multiple of 6 and the corresponding bandwidth is greater than or equal to 1512MHz.

In one possible example, when the subcarrier spacing of CORESET0 is 480kHz, the number of PRBs of CORESET0 is a multiple of 6 and the corresponding bandwidth is greater than or equal to 1512MHz.

In one possible example, when the subcarrier spacing of CORESET0 is 480kHz, the number of PRBs of CORESET0 is greater than or equal to 264.

In one possible example, when the subcarrier spacing of CORESET0 is 960kHz, the number of PRBs of CORESET0 is a multiple of 6 and the corresponding bandwidth is greater than or equal to 1512MHz.

In one possible example, when the subcarrier spacing of CORESET0 is 960kHz, the number of PRBs of CORESET0 is greater than or equal to 132.

In the case of an integrated unit, a schematic structural diagram of another CORESET parameter determining device according to an embodiment of the present application is shown in fig. 5. In fig. 5, the CORESET parameter determining device 5 includes: a processing module 50 and a communication module 51. The processing module 50 is used to control and manage actions of the CORESET determination means of the parameters, e.g., steps performed by the determination unit 40, and/or other processes for performing the techniques described herein. The communication module 51 is used for supporting interaction between the determining device of CORESET a parameters and other devices. As shown in fig. 5, the CORESET parameter determining device may further include a storage module 52, where the storage module 52 is configured to store program codes and data of the CORESET parameter determining device.

The processing module 50 may be a Processor or controller, such as a central processing unit (Central Processing Unit, CPU), a general purpose Processor, a digital signal Processor (DIGITAL SIGNAL Processor, DSP), an ASIC, FPGA or other programmable logic device, transistor logic device, hardware components, or any combination thereof. Which may implement or perform the various exemplary logic blocks, modules and circuits described in connection with this disclosure. The processor may also be a combination that performs the function of a computation, e.g., a combination comprising one or more microprocessors, a combination of a DSP and a microprocessor, and the like. The communication module 51 may be a transceiver, an RF circuit, a communication interface, or the like. The memory module 52 may be a memory.

All relevant contents of each scenario related to the above method embodiment may be cited to the functional description of the corresponding functional module, which is not described herein. The above-mentioned CORESET a determination device 4 of a parameter and the above-mentioned CORESET a determination device 5 of a parameter may each perform the steps performed by the terminal in the above-mentioned determination method of a parameter CORESET shown in fig. 2.

The embodiment of the application provides a device for determining a bandwidth part parameter, which can be a terminal. Specifically, the determining device of the bandwidth part parameter is used for executing the steps executed by the terminal in the determining method of the bandwidth part parameter. The device for determining the bandwidth part parameter provided by the embodiment of the application can comprise modules corresponding to the corresponding steps.

The embodiment of the application can divide the functional modules of the bandwidth part parameter determining device according to the method example, for example, each functional module can be divided corresponding to each function, and two or more functions can be integrated in one processing module. The integrated modules may be implemented in hardware or in software functional modules. The division of the modules in the embodiment of the application is schematic, only one logic function is divided, and other division modes can be adopted in actual implementation.

Fig. 6 shows a possible configuration diagram of the determination device of the bandwidth part parameter involved in the above-described embodiment in the case where the respective functional modules are divided with the respective functions. As shown in fig. 6, the determining means 6 of the bandwidth part parameter is applied to the terminal; the device comprises:

a determining unit 60 determines the subcarrier spacing and/or frequency locations of the first class bandwidth portions.

In one possible example, the first type of bandwidth portion is an initial active bandwidth portion or a reconfigured initial active bandwidth portion.

In one possible example, the first type of bandwidth part is a bandwidth part with a bandwidth part index of 0 or a reconfigured bandwidth part with a bandwidth part index of 0.

In one possible example, the first type of bandwidth portion is a bandwidth portion with a bandwidth portion index other than 0.

In a possible example, the apparatus further comprises an obtaining unit 61 for switching to or activating the first class bandwidth portion after obtaining a system information block SIB 1.

In one possible example, in terms of the determining the subcarrier spacing of the first type of bandwidth parts, the determining unit 60 is specifically configured to: and acquiring the subcarrier intervals of the first-class bandwidth parts through SIB 1.

In one possible example, in terms of the determining the subcarrier spacing and the frequency location of the first type of bandwidth part, the determining unit 60 is specifically configured to: and acquiring the subcarrier intervals and the frequency positions of the first-class bandwidth parts through SIB 1.

In a possible example, the apparatus further comprises a receiving unit 62 for receiving at least one of the following within the first class of bandwidth portions: other system information OSI, random access response RAR messages, paging messages.

In the case of using an integrated unit, a schematic structural diagram of another apparatus for determining a bandwidth part parameter according to an embodiment of the present application is shown in fig. 7. In fig. 7, the determining means 7 of the bandwidth part parameter includes: a processing module 70 and a communication module 71. The processing module 70 is configured to control and manage actions of the determining means of the bandwidth part parameter, for example, steps performed by the determining unit 60, the obtaining unit 61 and the receiving unit 62, and/or other processes for performing the techniques described herein. The communication module 71 is used for supporting the interaction between the determining means of the bandwidth part parameter and other devices. As shown in fig. 7, the determining means of the bandwidth part parameter may further include a storage module 72, the storage module 72 being configured to store program codes and data of the determining means of the bandwidth part parameter.

The processing module 70 may be a Processor or controller, such as a central processing unit (Central Processing Unit, CPU), a general purpose Processor, a digital signal Processor (DIGITAL SIGNAL Processor, DSP), an ASIC, FPGA or other programmable logic device, transistor logic device, hardware components, or any combination thereof. Which may implement or perform the various exemplary logic blocks, modules and circuits described in connection with this disclosure. The processor may also be a combination that performs the function of a computation, e.g., a combination comprising one or more microprocessors, a combination of a DSP and a microprocessor, and the like. The communication module 71 may be a transceiver, an RF circuit, a communication interface, or the like. The memory module 72 may be a memory.

All relevant contents of each scenario related to the above method embodiment may be cited to the functional description of the corresponding functional module, which is not described herein. The above-mentioned determination means 6 of the bandwidth part parameter and the determination means 7 of the bandwidth part parameter may each perform the steps performed by the terminal in the above-mentioned determination method of the bandwidth part parameter shown in fig. 3.

The embodiment of the application provides a chip which is used for determining CORESET0 subcarrier intervals and/or the number of physical resource blocks PRBs.

The embodiment of the application provides a chip module, which comprises a receiving and transmitting component and a chip,

The chip is configured to determine a subcarrier spacing of CORESET0 and/or a physical resource block PRB number.

The embodiment of the application provides a chip which is used for determining subcarrier intervals and/or frequency positions of a first type of bandwidth part.

The embodiment of the application provides a chip module, which comprises a receiving and transmitting component and a chip, wherein the chip is used for determining subcarrier intervals and/or frequency positions of a first type of bandwidth part.

The above embodiments may be implemented in whole or in part by software, hardware, firmware, or any other combination. When implemented in software, the above-described embodiments may be implemented in whole or in part in the form of a computer program product. The computer program product comprises one or more computer instructions or computer programs. When the computer instructions or computer program are loaded or executed on a computer, the processes or functions described in accordance with embodiments of the present application are produced in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable apparatus. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from one website site, computer, server, or data center to another website site, computer, server, or data center by wired or wireless means. The computer readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that contains one or more sets of available media. The usable medium may be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium. The semiconductor medium may be a solid state disk.

The embodiment of the application also provides a computer storage medium, wherein the computer storage medium stores a computer program for electronic data exchange, and the computer program makes a computer execute part or all of the steps of any one of the above method embodiments, and the computer includes an electronic device.

Embodiments of the present application also provide a computer program product comprising a non-transitory computer-readable storage medium storing a computer program operable to cause a computer to perform part or all of the steps of any one of the methods described in the method embodiments above. The computer program product may be a software installation package, said computer comprising an electronic device.

It should be understood that, in various embodiments of the present application, the sequence numbers of the foregoing processes do not mean the order of execution, and the order of execution of the processes should be determined by the functions and internal logic thereof, and should not constitute any limitation on the implementation process of the embodiments of the present application.

In the several embodiments provided in the present application, it should be understood that the disclosed method, apparatus and system may be implemented in other manners. For example, the device embodiments described above are merely illustrative; for example, the division of the units is only one logic function division, and other division modes can be adopted in actual implementation; for example, multiple units or components may be combined or may be integrated into another system, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.

The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in the embodiments of the present invention may be integrated in one processing unit, or each unit may be physically included separately, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in hardware plus software functional units.

The integrated units implemented in the form of software functional units described above may be stored in a computer readable storage medium. The software functional unit is stored in a storage medium, and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (Random Access Memory RAM), a magnetic disk, or an optical disk, etc., which can store program codes.

Although the present invention is disclosed above, the present invention is not limited thereto. Variations and modifications, including combinations of the different functions and implementation steps, as well as embodiments of the software and hardware, may be readily apparent to those skilled in the art without departing from the spirit and scope of the invention.

Claims

1. A method for determining a bandwidth part parameter, comprising:

acquiring a system information block SIB1 in an initial activation bandwidth part corresponding to a control resource set zero CORESET 0;

Determining the frequency position of a first type bandwidth part through the SIB1, wherein the first type bandwidth part is an initial activation bandwidth part;

Determining that the frequency position of the first class bandwidth portion is effective;

and receiving a random access response RAR message or a message 4Msg4 in the first type bandwidth part.

2. The method of claim 1, wherein the first type of bandwidth portion is a reconfigured bandwidth portion having a bandwidth portion index of 0.

3. The method according to claim 1 or 2, characterized in that the method further comprises:

Receiving within the first class of bandwidth portions at least one of:

Other system information OSI, paging messages.

4. The method of claim 1 or 2, wherein the SIB1 includes a serving cell configuration common ServingCellConfigCommonSIB.

5. The method according to claim 1 or 2, wherein before said determining the frequency location of the first type of bandwidth portion takes effect, the method further comprises:

After the paging message is acquired or the acknowledgement is paged.

6. The method according to claim 1 or 2, wherein said determining the frequency location of said first class bandwidth portion is effected, comprising:

and switching to or activating the first type bandwidth part according to the bandwidth part which is indicated by the first indication domain of the SIB1 and is currently required to be switched to or activated.

7. The method of claim 6, wherein the first indication field carries an index of the first type of bandwidth portion.

8. The method according to claim 1 or 2, wherein the frequency domain resource of the initially active bandwidth portion is a high-band unlicensed spectrum.

9. A method according to claim 1 or 2, characterized in that the frequency location of the first type of bandwidth part meets the OCB requirement.

10. A device for determining a bandwidth part parameter, comprising:

A determining unit, configured to obtain a system information block SIB1 in an initial activation bandwidth portion corresponding to a control resource set zero CORESET; determining the frequency position of a first type bandwidth part through the SIB1, wherein the first type bandwidth part is an initial activation bandwidth part; determining that the frequency position of the first class bandwidth portion is effective; and receiving a random access response, RAR, message or message 4Msg4 within the first class of bandwidth portions.

11. A terminal comprising a processor, a memory, and one or more programs stored in the memory and configured to be executed by the processor, the programs comprising instructions for performing the steps in the method of any of claims 1-9.

12. A computer-readable storage medium, characterized in that a computer program for electronic data exchange is stored, wherein the computer program causes a computer to execute the instructions of the steps in the method according to any one of claims 1-9.