CN114125998B

CN114125998B - Cell access method, information broadcasting method, device and electronic equipment

Info

Publication number: CN114125998B
Application number: CN202111466374.9A
Authority: CN
Inventors: 韩梦捷
Original assignee: Xingsi Connection Shanghai Semiconductor Co ltd
Current assignee: Xingsi Connection Shanghai Semiconductor Co ltd
Priority date: 2021-12-03
Filing date: 2021-12-03
Publication date: 2024-06-11
Anticipated expiration: 2041-12-03
Also published as: CN114125998A

Abstract

The application provides a cell access method, an information broadcasting device and electronic equipment, and relates to the technical field of communication. The method utilizes the indication parameters comprising the subcarrier offset parameter K _SSB and the extension parameter A to indicate the type of SSB, and the indication parameters have larger value ranges than the subcarrier offset parameter K _SSB due to the addition of the extension parameter A, so that the indication parameters can indicate the frequency domain position offset of the larger value rangesThus, when the number of the synchronization grids is increased, the configuration of the subcarrier offset parameter K _SSB is not affected and the frequency domain position offset is beyond the original rangeCan also be indicated so that for the terminal device it is able to find the appropriate CD-SSB by the NCD-SSB, shortening the delay of its access to the cell.

Description

Cell access method, information broadcasting method, device and electronic equipment

Technical Field

The present application relates to the field of communications technologies, and in particular, to a cell access method, an information broadcasting device, and an electronic device.

Background

During initial access, the terminal device performs cell access by searching for synchronization signal blocks (Synchronization Signal Block/physical broadcast channel block, SSB) on a predefined synchronization grid (Synchronization Raster, SYNCH RASTER). The types of SSBs are classified into cell definition (CELL DEFINING, CD) -SSB and Non-cell definition (Non-CELL DEFINING, NCD) -SSB in the new air interface (New Radio interface, NR) system. Wherein the CD-SSB includes a master information block (Master Information Block, MIB) and system information block (System Information Block, SIB) 1 information, and the NCD-SSB does not include SIB1 related information, so that the CD-SSB may support access of the terminal device, and the NCD-SSB may not support access of the terminal device. When the terminal device searches the NCD-SSB, the cell access is required to be performed after the corresponding CD-SSB is found through the NCD-SSB.

In order to enable the terminal device to find the appropriate CD-SSB by NCD-SSB, the standard protocol specifies that the CD-SSB can be found by frequency domain location offset so that the terminal device can achieve cell access. Whereas in the FR2 (24.25 GHz-52.6 GHz) frequency range of the NR system, the frequency domain position offset takes values between-256 and 256, because the number of synchronization grids in all frequency bands in the FR2 (24.25 GHz-52.6 GHz) frequency range does not exceed 256. However, for the frequency band above 52.6GHz, the number of synchronization grids may exceed 256, and at this time, a frequency domain position offset higher than 256 cannot be indicated, which increases the delay of the terminal in accessing the cell because a suitable CD-SSB cannot be found by NCD-SSB.

Disclosure of Invention

An embodiment of the application aims to provide a cell access method, an information broadcasting device and electronic equipment, which are used for solving the problem that frequency domain position deviation exceeding the limited range cannot be indicated in the prior art.

In a first aspect, an embodiment of the present application provides a cell access method, applied to a terminal device, where the method includes:

When a synchronous signal block SSB is searched in a frequency band, determining whether to attempt to initiate cell access according to the searched SSB;

wherein the SSB includes an indication parameter for indicating a type of the SSB, wherein the indication parameter includes a subcarrier offset parameter K _SSB and an extension parameter a;

When the indication parameter indicates that the type of the SSB is non-cell-defined NCD-SSB, the indication parameter corresponds to The value of (1) falls within [1, 256 xq ], where/>And characterizing the frequency domain position offset of the cell definition CD-SSB and the synchronization grid where the NCD-SSB is positioned, wherein q is an integer not less than 2, and the number value of the synchronization grid in the frequency band falls into (256× (q-1), 256×q ].

In the implementation process, the type of SSB is indicated by using the indication parameters including the subcarrier offset parameter K _SSB and the extension parameter a, and the indication parameters have a larger value range than the subcarrier offset parameter K _SSB due to the addition of the extension parameter a, so that the indication parameters can indicate the frequency domain position offset of the larger value rangeThus, when the number of the synchronization grids is increased, the configuration of the subcarrier offset parameter K _SSB is not affected and the frequency domain position offset is beyond the original rangeCan also be indicated so that for the terminal device it is able to find the appropriate CD-SSB by the NCD-SSB, shortening the delay of its access to the cell.

Optionally, the indication parameter is obtained by splicing the subcarrier offset parameter K _SSB and the extension parameter a;

The determining whether to attempt to initiate cell access according to the searched SSB comprises the following steps:

When the value of the indication parameter falls into a first range, determining that the type of the SSB is CD-SSB, demodulating the CD-SSB to try to initiate cell access, wherein the value of the indication parameter represents subcarrier offset of the SSB;

and when the value of the indication parameter falls into a second range, determining the type of the SSB as NCD-SSB, determining a target CD-SSB according to the NCD-SSB, and demodulating the target CD-SSB to attempt to initiate cell access.

In the implementation process, the indication parameter is obtained by splicing the K _SSB and the extension parameter A, so that the value range of the indication parameter can be limited by the extension parameter A and the subcarrier offset parameter K _SSB, and the indication parameter can indicate the frequency domain position offset of a larger value rangeSo that when the number of the synchronization grids is increased, the configuration of the subcarrier offset parameter K _SSB is not affected and the frequency domain position offset/>, which is beyond the original range, is not affectedCan also be indicated, and the terminal device can find a suitable CD-SSB from the NCD-SSB, so as to realize the rapid access of the cell.

Optionally, the determining the target CD-SSB according to the NCD-SSB includes:

Based on the frequency domain position GSCN _NCD-SSB of the synchronization grid where the NCD-SSB is located and the Determining a frequency domain location GSCN _CD-SSB of the target CD-SSB;

Wherein when the value of the indication parameter is p ₁ +i, the corresponding value is Wherein p ₁ is the minimum value of the indication parameter when the type of the SSB is NCD-SSB, i is an integer, and i is more than or equal to 0 and less than or equal to q-1;

When the value of the indication parameter is p ₁ +i+q, the corresponding value is p ₁ +i+q The value of the product falls into [ -256× (i+1), - (256×i+1) ].

In the implementation process, the type of the SSB is indicated by the value of the indication parameter, and the indication parameter can indicate the frequency domain position offset of a larger value rangeTherefore, when the number configuration of synchronization grids is increased, the terminal device can still pass the searched NCD-SSB and its corresponding/>Find the appropriate CD-SSB.

Optionally, the indication parameter is obtained by combining the subcarrier offset parameter K _SSB and the extension parameter a;

When the value of the extension parameter a is null or falls within a third range, and the value of the subcarrier offset parameter K _SSB or the value of the subcarrier offset parameter K _SSB after splicing with the extension parameter a falls within a fourth range, determining that the type of the SSB is CD-SSB, and demodulating the CD-SSB to attempt to initiate cell access, wherein the value of the subcarrier offset parameter K _SSB characterizes subcarrier offset of the SSB;

When the value of the extension parameter a falls within a fifth range and the value of the subcarrier offset parameter K _SSB or the value of the subcarrier offset parameter K _SSB after splicing with the extension parameter a falls within a sixth range, determining that the type of the SSB is NCD-SSB, determining a target CD-SSB according to the NCD-SSB, and demodulating the target CD-SSB to attempt to initiate cell access.

In the implementation process, the indication parameter is obtained by combining the subcarrier offset parameter K _SSB with the extension parameter a, so that the SSB type can be primarily judged directly according to the value range of the extension parameter a.

Wherein when the value of the indication parameter is p ₂ +i, the corresponding value is Wherein p ₂ is the minimum value of the subcarrier offset parameter K _SSB or the minimum value of the subcarrier offset parameter K _SSB after splicing with the extension parameter A when the type of the SSB is NCD-SSB, i is an integer, and i is more than or equal to 0 and less than or equal to q-1;

when the value of the indication parameter is p ₂ +i+q, the corresponding value is p ₂ +i+q The value of the product falls into [ -256× (i+1), - (256×i+1) ].

In the implementation process, the type of SSB is indicated by the value of the indication parameter, and the indication parameter can change the phase to indicate the frequency domain position offset of a larger value rangeTherefore, when the number configuration of synchronization grids is increased, the terminal device can still pass the searched NCD-SSB and its corresponding/>Find the appropriate CD-SSB.

Optionally, the extension parameter a is represented by at least one parameter of parameters subCarrierSpacingCommon, dmrs-TypeA-Position, cellBarred, intraFreqReselection, spare in a master information block MIB;

When the extension parameter a is represented by a parameter subCarrierSpacingCommon, the subcarrier spacing of the system information block SIB1, other system information OSI, the messages msg2, msg4 is the same as the SSB;

When the expansion parameter A is represented by a parameter DMRS-TypeA-Position, the Position of a demodulation reference signal DMRS in a PBCH channel is pos2 or pos3;

When the expansion parameter A is expressed by a parameter cellBarred, allowing access by a cell under the condition that the type of the SSB is CD-SSB, and prohibiting access by the cell under the condition that the type of the SSB is NCD-SSB;

when the expansion parameter A is expressed by a parameter intraFreqReselection, the same-frequency reselection is allowed under the condition that the type of the SSB is CD-SSB, and the same-frequency reselection is forbidden under the condition that the type of the SSB is NCD-SSB;

the expansion parameter A is represented by the related parameters in the MIB, so that the expansion parameter A can be represented without additionally expanding new parameters, and is simpler;

And/or the number of the groups of groups,

The number of bits occupied by the subcarrier offset parameter K _SSB is 4 bits, and the number of bits occupied by the extension parameter A is not less than 1 bit; therefore, the numerical range of the indication parameter can be expanded through expanding the parameter A, and the indication range of the frequency domain position deviation is further expanded;

And/or the number of the groups of groups,

The minimum frequency value of the frequency band is not less than 52.6GHz.

In a second aspect, an embodiment of the present application provides an information broadcasting method, applied to a base station, where the method includes:

broadcasting a synchronization signal block SSB;

When the indication parameter indicates that the type of the SSB is non-cell-defined NCD-SSB, the indication parameter corresponds to The value of (1) falls within [1, 256 xq ], where/>And characterizing the frequency domain position offset of the cell definition CD-SSB and the synchronization grid where the NCD-SSB is positioned, wherein q is an integer not less than 2, and the value of the SSB corresponding to the number of the synchronization grids in the frequency band falls into (256× (q-1), 256×q ].

In a third aspect, an embodiment of the present application provides a cell access device, operating in a terminal device, where the device includes:

The cell access module is used for determining whether to attempt to initiate cell access according to the searched SSB when the synchronous signal block SSB is searched in the frequency band;

In a fourth aspect, an embodiment of the present application provides an information broadcasting apparatus, which operates in a base station, the apparatus including:

A broadcasting module for broadcasting the synchronization signal block SSB;

In a fifth aspect, an embodiment of the present application provides an electronic device comprising a processor and a memory storing computer readable instructions which, when executed by the processor, perform the steps of the method as provided in the first or second aspects above.

In a sixth aspect, embodiments of the present application provide a computer readable storage medium having stored thereon a computer program which when executed by a processor performs the steps of the method as provided in the first or second aspects above.

Additional features and advantages of the application will be set forth in the description which follows, and in part will be apparent from the description, or may be learned by practice of the embodiments of the application. The objectives and other advantages of the application will be realized and attained by the structure particularly pointed out in the written description and claims thereof as well as the appended drawings.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments of the present application will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and should not be considered as limiting the scope, and other related drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural diagram of a communication system according to an embodiment of the present application;

FIG. 2 is a schematic diagram of a frequency band distribution of a synchronization grid in the prior art;

fig. 3 is a schematic diagram of a correspondence relationship between subcarrier offset parameters and frequency domain position offset in the FR1 frequency range in the prior art;

Fig. 4 is a schematic diagram of a correspondence relationship between subcarrier offset parameters and frequency domain position offset in the FR2 frequency range in the prior art;

Fig. 5 is a flowchart of a cell access method according to an embodiment of the present application;

Fig. 6 is a flowchart of an information broadcasting method according to an embodiment of the present application;

fig. 7 is a block diagram of a cell access device according to an embodiment of the present application;

Fig. 8 is a block diagram of an information broadcasting apparatus according to an embodiment of the present application;

fig. 9 is a schematic structural diagram of an electronic device for performing an information broadcasting method or a cell access method according to an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application.

It should be noted that the terms "system" and "network" in embodiments of the present invention may be used interchangeably. "plurality" means two or more, and "plurality" may also be understood as "at least two" in this embodiment of the present invention. "and/or", describes an association relationship of an association object, and indicates that there may be three relationships, for example, a and/or B, and may indicate: a exists alone, A and B exist together, and B exists alone. The character "/", unless otherwise specified, generally indicates that the associated object is an "or" relationship.

The information broadcasting method and the cell access method in the embodiments of the present application can be applied to various communication systems, for example, a global system for mobile communications (Global System of Mobile communication, GSM) system, a code division multiple access (Code Division Multiple Access, CDMA) system, a wideband code division multiple access (Wideband Code Division Multiple Access, WCDMA) system, a general packet Radio Service (GENERAL PACKET Radio Service, GPRS), a long term evolution (Long Term Evolution, LTE) system, an LTE frequency division duplex (Frequency Division Duplex, FDD) system, an LTE time division duplex (Time Division Duplex, TDD), a universal mobile communication system (Universal Mobile Telecommunication System, UMTS) or a 5G system, and the like.

As shown in fig. 1, the information broadcasting method or the cell access method in the present application can be applied to the communication system 100 shown in fig. 1. The communication system 100 comprises a base station 10 and terminal devices 20, the base station 10 being capable of providing communication coverage for an area and being capable of communicating with terminal devices 20 located within the area. In some embodiments, the base station 10 may be a base station in a GSM system or a CDMA system, or may be a base station in a WCDMA system, or may be an evolved base station in an LTE system, or may be a base station in a 5G system.

Terminal device 20 may refer to an access terminal, user Equipment (UE), subscriber unit, subscriber station, mobile station, remote terminal, mobile device, user terminal, wireless communication device, user agent, or User Equipment. An access terminal may be a cellular telephone, a cordless telephone, a session initiation protocol (Session Initiation Protocol, SIP) phone, a wireless local loop (Wireless Local Loop, WLL) station, a Personal digital assistant (Personal DIGITAL ASSISTANT, PDA), a handheld device with wireless communication capabilities, a computing device or other processing device connected to a wireless modem, an in-vehicle device, a wearable device, a terminal device in a 5G network or a terminal device in a future evolved PLMN, etc.

In order to facilitate an understanding of the inventive arrangements, a brief description of some concepts related to the application will be provided below.

Synchronization Signal Block (SSB): common channels and signals in NR systems, such as synchronization signals (synchronization signal, SS) and physical broadcast channels (Physical Broadcast Channel, PBCH), need to cover the entire cell by means of multi-beam scanning for reception by terminal devices within the cell. The multi-beam transmission of synchronization signals is achieved by defining SS/PBCH burst sets (burst sets), one SS burst set containing one or more SS/PBCH blocks (abbreviated synchronization signal blocks SSBs), one SSB for carrying synchronization signals and physical broadcast channels of one beam.

Synchronization grid (Synchronization Raster, SYNCH RASTER): the synchronization grid is a basic frequency domain position for configuring the SSB, and the step size and the density of the synchronization grid determine the time for the terminal device to perform the initial search of the cell.

When the terminal device just starts up to search a cell, it can only detect SSB signals according to frequency bands supported by an operator and the terminal device, and perform downlink time-frequency synchronization, because the granularity of the global frequency grid is smaller, the value range of an NR absolute frequency point (NR Absolute Radio Frequency Channel Number, NR-ARFCN) (used for coding the frequency domain range of the reference frequency) is larger, and if blind detection is directly performed according to the global frequency grid, the synchronization time delay can be larger. Therefore, in order to effectively reduce the synchronization delay of this process, the concept of a synchronization grid is defined and the search scope is defined by global synchronization channel numbers (Global Synchronization Channel Number, GSCN). As shown in table 1 below, one GSCN for each synchronization grid, the formula for calculation GSCN may be obtained by the third column in table 1. It should be noted that, the granularity of SYNCH RASTER in different frequency ranges is different, specifically, when the frequency range is between 0GHz and 3GHz, the granularity of SYNCH RASTER is 50kHz; when the frequency range is between 3GHz and 24.25GHz, the granularity of SYNCH RASTER is 1.44MHz; the grain size of SYNCH RASTER is 17.28MHz when the frequency band is between 24.25GHz and 100 GHz.

For example, in the frequency range 24.25GHz-100GHz, when n=1, the frequency domain position of SYNCH RASTER is 24250.08+1×17.28= 24267.36MHz, and corresponding number GSCN is 22257.

TABLE 1

For a synchronization grid, the distribution of the synchronization grid over the partial frequency bands is determined as in fig. 2, under different frequency bands. For example, for band n12, the number of synchronization grids is in the range of 1828-1858, for a total of 31 synchronization grids, which is GSCN. The terminal device searches the SSB according to the position of the synchronization grid in the specific frequency band, so that the master information block MIB and the system information block SIB1 information can be obtained from the SSB.

The SIB1 described above may also be referred to as residual minimum system information (REMAINING MINIMUM SYSTEM INFORMATION, RMSI), however, not every SSB carries a corresponding RMSI, where the RMSI may be used to instruct the terminal device to perform cell access, so that the terminal device needs to obtain RMSI in the SSB to enable the terminal device to know whether RMSI is carried in the SSB, and it is defined that whether the SSB carries a corresponding RMSI by using a subcarrier offset parameter K _SSB, that is, a subcarrier offset parameter K _SSB, where the subcarrier offset parameter K _SSB indicates an offset (RE-level) between the SSB and a control Resource Set #0 (CORESET #0, control-Resource Set # 0).

If RMSI is carried in SSBs, for this type of SSB, it may be called cell definition CD-SSB, and the terminal device can only perform cell access when scanning for CD-SSB, while if RMSI is not carried in SSB, for this type of SSB it may be called non-cell definition NCD-SSB, i.e. SSB may be divided into CD-SSB and NCD-SSB, where CD-SSB is mainly used for initial access of a cell, including RMSI information of an access cell, and NCD-SSB is mainly used for other situations than initial access of a cell, such as measurement, where cell access of the terminal device cannot be supported.

In different frequency ranges of the NR system, the information indicated by the subcarrier offset parameter K _SSB is different, as shown in fig. 3, in the frequency range of FR1 (450 MHz-6 GHz), the subcarrier offset parameter K _SSB includes 5 bits and may represent the numerical value 0-31, where when the subcarrier offset parameter K _SSB takes the value 24-29, it represents that the type of SSB is NCD-SSB, at this time, cell access cannot be performed, and when the subcarrier offset parameter K _SSB takes the value 0-23, it represents that the type of SSB is CD-SSB, and cell access can be performed. As shown in fig. 4, in the FR2 (24.25 GHz-52.6 GHz) frequency range, the subcarrier offset parameter K _SSB includes 4 bits, which may represent values of 0-15, where when the subcarrier offset parameter K _SSB takes values of 12-13, it represents that the type of SSB is NCD-SSB, and when the subcarrier offset parameter K _SSB takes values of 0-11, it represents that the type of SSB is CD-SSB.

It should be appreciated that the frequency domain position offset of GSCN of the synchronization grid where the target CD-SSB is located compared to GSCN of the synchronization grid where the NCD-SSB is located is indicated in fig. 3 and 4 by the combination of the subcarrier offset parameter K _SSB and the parameters pdcch-ConfigSIB1 in the MIBThat is, if the terminal device analyzes that the value of the subcarrier offset parameter K _SSB is 24 to 29 from the currently searched SSBs in the FR1 frequency range, or the value of the subcarrier offset parameter K _SSB is 12 to 13 from the currently searched SSBs in the FR2 frequency range, the terminal device determines that the current SSB is NCD-SSB, and the terminal device can determine the offset of GSCN between the CD-SSB and the NCD-SSB, namely the frequency domain position offset/>, according to the parameters controlResourceSetZero and searchSpaceZero in the MIB pdcch-ConfigSIB1So that the terminal equipment obtains the corresponding informationThereafter, the frequency domain position offset/>, in fig. 3 or fig. 4 can be passedAnd the GSCN of the current NCD-SSB can obtain GSCN of the synchronous grid where the target CD-SSB is located, so that the cell access is realized.

For the frequency band above 52.6GHz, the subcarrier spacing supportable by the current system is 120kHz,480kHz and 960kHz. In the initial access procedure under the NR system architecture of Rel-17, 480kHz may be supported in addition to 120kHz, i.e., SSB, type0-PDCCH, PDSCH carrying SIB1, other information (Other System Information, OSI) in the initial access procedure, and msg.2/4 in the PRACH procedure may use 120kHz or 480kHz.

For the frequency band above 52.6GHz, for example, 52.6GHz-71GHz is a new block frequency band and is defined as only one frequency band (band), so that the frequency domain position of the synchronous grid needs to be redesigned under the condition that the subcarrier spacing of the SSB is 120kHz and 480 kHz. In practical applications, the number of synchronization grids in the frequency band of 52.6GHz-71GHz cannot exceed 665 regardless of how many subcarrier intervals are supported, that is, the number of synchronization grids above 52.6GHz may exceed 256.

In order to adapt to the increase of the number of the synchronous grids, the application adds an expansion parameter A, and indicates the type of SSB by an indication parameter comprising the expansion parameter A and a subcarrier offset parameter K _SSB, thereby indicating a larger value rangeSo that when the number of synchronization grids is configured to be increased, the configuration of the subcarrier offset parameter K _SSB is not affected and exceeds the original range/>Can also be indicated so that the terminal device can find the appropriate CD-SSB by the NCD-SSB, reducing its delay in accessing the cell.

It should be understood that the present application can also be applied when the number and arrangement of the synchronization grids corresponding to FR1 or FR2 are changed. For example, for FR2, when the number of synchronization grids is greater than 256 and less than 512, K _SSB =12 can be configured to correspond toThe value range [1, 256], K _SSB =13 corresponds/>The value range of (257, 512), K _SSB =14 corresponds toThe range of values of [ -256, -1], K _SSB =15 corresponds to/>When the number of synchronization grids is greater than 512, the excess cannot be indicated without changing the number of bits occupied by the subcarrier offset parameter K _SSB, in which case the present application may be applied to overcome the above-mentioned drawbacks.

Referring to fig. 5, fig. 5 is a flowchart of a cell access method according to an embodiment of the present application, where the method is applied to a terminal device, and the method includes the following steps:

Step S210: and when the synchronous signal block SSB is searched in the frequency band, determining whether to attempt to initiate the cell access according to the searched SSB.

In the embodiment of the present application, the applicable frequency band may be, for example, a frequency band with a minimum frequency value not less than 52.6GHz, that is, the terminal device performs SSB search in a frequency band greater than or equal to 52.6GHz, for example, performs SSB search in a frequency band between 52.6GHz and 71 GHz. Referring to the above, in the frequency band, the maximum number of synchronization grids can reach 665, and all synchronization grids may not be indicated without increasing the number of bits occupied by the subcarrier offset parameter K _SSB, so the present application can be used for indicating the number of synchronization grids beyond the original range without changing the configuration of the subcarrier offset parameter K _SSB The indication is made so as to accommodate the increase of the configuration of the number of synchronization grids in the frequency band, specifically, one extension parameter a is added, and the indication parameters for indicating the SSB type are represented by extension parameters a and K _SSB, that is, the indication parameters include a subcarrier offset parameter K _SSB and an extension parameter a. As the extension parameter A is added, the indication parameter has a larger value range than the subcarrier offset parameter K _SSB, so that the indication parameter can indicate the frequency domain position offset/>, of the larger value rangeAnd can further adapt to the increase of the number of the synchronous grids to indicate the/>, of a larger value range

After searching the SSB, the terminal equipment can analyze the SSB, wherein the SSB comprises an indication parameter for indicating the type of the SSB, and when the indication parameter indicates that the type of the SSB is NCD-SSB, the indication parameter corresponds to the indication parameterThe value of (1) falls within [1, 256 xq ], where/>And characterizing the frequency domain position offset of the cell definition CD-SSB and the synchronization grid where the NCD-SSB is positioned, wherein q is an integer not less than 2, and the number value of the synchronization grid in the frequency band falls into (256× (q-1), 256×q ].

That is to say that the first and second,For example, for a certain frequency band, when it is determined that the subcarrier offset parameter K _SSB occupies 4 bits and the number of the synchronization grids is 665, the value of K _SSB falls within 0-11, which indicates that the type of the searched SSB is CD-SSB, the value of q is 3, the value of K _SSB falls within 12-17, which indicates that the type of the searched SSB is NCD-SSB, and/>, which can range from-768 to 768Indication,/>The correspondence between the value ranges of the (c) and the indication parameters is shown in the following table 2:

TABLE 2

It can be appreciated that in practical application, q can be valued according to the number configuration of the synchronous grids, so that the q can be flexibly valued according to requirementsAn instruction is given.

When the base station broadcasts the SSB, the base station can carry corresponding indication parameters in the SSB, and before the base station broadcasts the SSB, the indication parameters, controlResourceSetZero and searchSpaceZero in the SSB and the frequency domain position offset can be configuredThe corresponding relation between the two is that when the terminal equipment analyzes that the indication parameter indicates that the current SSB type is NCD-SSB, the terminal equipment can directly obtain the frequency domain position offset/>, according to the corresponding relationThus can be based on the searched NCD-SSB and the corresponding frequency domain position offset/>And finding the frequency domain position of the CD-SSB, and further realizing the cell access.

In the implementation process, in the case that the subcarrier offset parameter K _SSB occupies the determined bit number, the frequency domain position offset of the larger value range is used for adapting to the increase of the number of the synchronous gridsIn the method, an extension parameter A is added, and the type of SSB is indicated by an indication parameter comprising a subcarrier offset parameter K _SSB and the extension parameter A, so that the indication parameter has a larger value range than the subcarrier offset parameter K _SSB, and the indication parameter can indicate the frequency domain position offset/>, of the larger value rangeWhen the number of the synchronization grids is configured to be increased, the configuration of the subcarrier offset parameter K _SSB is not affected and the frequency domain position offset is beyond the original range/>Can also be indicated so that for the terminal device it is able to find the appropriate CD-SSB by the NCD-SSB, shortening the delay of its access to the cell.

Based on the above embodiment, the number of bits occupied by the indication parameter may be set in a customized manner according to practical applications, where the number of bits occupied by the subcarrier offset parameter K _SSB is determined by the subcarrier interval corresponding to the SSB and the subcarrier interval corresponding to CORESET #0, and the number of bits occupied by the extension parameter a may be determined by adapting to the number configuration of the synchronization grid. For example, the number of bits occupied by the subcarrier offset parameter K _SSB is 4 bits, and the number of bits occupied by the extension parameter a may be greater than or equal to 1 bit.

In some embodiments, the indication parameter may be obtained by splicing the subcarrier offset parameter K _SSB and the extension parameter a, if the number of bits of the subcarrier offset parameter K _SSB is 4 bits and the number of bits of the extension parameter a is 1 bit, the indication parameter may be represented by splicing the two parameters, where the splicing manner may be that the extension parameter a occupies the most significant bit and the subcarrier offset parameter K _SSB occupies the lower 4 bits.

For example, when the value of the extension parameter a is 0 and the value of the subcarrier offset parameter K _SSB is 1100, the value of the indication parameter after splicing is 01100, that is, when the value of the indication parameter indicated by splicing the two parameters is 12. Of course, during the splicing, the extension parameter a may occupy the lowest bit, and the subcarrier offset parameter K _SSB occupies the upper 4 bits, so that the value range of the indication parameter may be 0-31.

In the case that the subcarrier offset parameter K _SSB occupies 4 bits, the indicated frequency domain position offset range is small, which may not be enough to indicate all synchronization grids in the frequency band, so that the frequency domain position offset of a larger value range is indicated by increasing the extension parameter aAnd avoid modification of the subcarrier offset parameter K _SSB bits, for example, indicating a parameter of 5 bits, which may represent a range of 0-31, so as to be able to indicate a frequency domain position offset of a larger value range.

In this case, the procedure by which the terminal device tries to initiate a cell access is as follows:

When the value of the indication parameter falls within the first range, the type of the SSB is determined to be CD-SSB, and then the CD-SSB may be demodulated to attempt to initiate cell access, where the value of the indication parameter characterizes the subcarrier offset of the SSB, that is, the subcarrier offset is commonly represented by the original subcarrier offset parameter K _SSB and the extension parameter.

When the value of the indication parameter falls within the second range, determining that the type of the SSB is NCD-SSB, determining a target CD-SSB according to the NCD-SSB, and demodulating the target CD-SSB to attempt to initiate the cell access.

For example, if the value range of the indication parameter is 0-31, and when the terminal device parses that the value of the indication parameter falls between the first range (e.g., the first range is 0-11), it indicates that the type of SSB is CD-SSB, and at this time, the CD-SSB may be directly demodulated to attempt cell access. When the terminal device parses that the value of the indication parameter falls between the second range (for example, the second range is 12-17), the type of the SSB is NCD-SSB, and a target CD-SSB needs to be found through the NCD-SSB to perform cell access through the target CD-SSB.

It can be understood that the specific value range of the first range may be determined according to subcarrier intervals corresponding to SSB and CORESET #0 in actual situations.

In determining the target CD-SSB, the frequency domain position GSCN _NCD-SSB and the frequency domain position GSCN _NCD-SSB of the synchronization grid where the NCD-SSB is positioned can be determined according toThe frequency domain location GSCN _CD-SSB of the target CD-SSB is determined.

For example, the values of the indication parameters and the frequency domain position offset are preconfiguredThe corresponding relation between the two can obtain the frequency domain position offset according to the indication parameter. For example, referring to table 2, if the indication parameter has a value of 12 and the 16×control resource zero+search space zero (i.e., pdcch-configSIB 1) has a value of 0, the terminal device obtains a frequency domain position offset/>The value of (2) is 1.

After obtaining the frequency domain position offset, the frequency domain position offset can be added to the frequency domain position GSCN _NCD-SSB of the NCD-SSB to obtain the frequency domain position GSCN _CD-SSB of the target CD-SSB, e.g.Wherein GSCN _NCD-SSB may be obtained by synchronizing the grids.

In this case, the indication parameter has a certain correspondence with the frequency domain position offset, such as when the indication parameter has a value of p ₁ +iWherein p ₁ is the minimum value of the indication parameter when the type of the SSB is NCD-SSB, i is an integer, and i is more than or equal to 0 and less than or equal to q-1; when the value of the indication parameter is p ₁ +i+q, the corresponding/>The value of the product falls into [ -256× (i+1), - (256×i+1) ].

Where q is an integer not less than 2, and p ₁ is the minimum value of the instruction parameter when the type of SSB is NCD-SSB. When q is equal to 3, reference can be made to Table 2, with p ₁ equal to 12. When i is equal to 0, the indication parameter takes a value of 12 and corresponds toThe value range of (1, 256) is 15 and the indication parameter corresponds to/>The value range of (2) is [ -256, -1]; when i is equal to 1, the value of the indication parameter is 13 and corresponds to/>The value range of (a) is [257, 512], and the indication parameter is 16 and corresponds to/>The value range of (C) is [ -512, -257]; when i is equal to 2, there is an indication that the parameter has a value of 14 and corresponds/>The range of values of [513, 768], the indication parameter is 17 and corresponds to/>The range of values of (C) is [ -768, -513]. Wherein/>The value range of (c) is incremented by 256 with the increment of the indication parameter, since pdcch-configSIB1 takes 8 bits.

In the implementation process, the indication parameter is obtained by splicing the K _SSB and the extension parameter A, so that the value range of the indication parameter can be limited by the extension parameter A and the subcarrier offset parameter K _SSB, and the frequency domain position offset of a larger value range is indicatedSo that when the number of the synchronization grids is increased, the configuration of the subcarrier offset parameter K _SSB is not affected and the frequency domain position offset/>, which is beyond the original range, is not affectedCan also be indicated, and the terminal device can find a suitable CD-SSB from the NCD-SSB, so as to realize the rapid access of the cell.

In other embodiments, the indication parameter is obtained by combining the subcarrier offset parameter K _SSB and the extension parameter a, in which case the value of the subcarrier offset parameter K _SSB is the subcarrier offset characterizing the SSB.

When the terminal equipment tries to access a cell, resolving a subcarrier offset parameter K _SSB and an extension parameter A in the SSB, and when the value of the extension parameter A is null or falls into a third range and the value of the subcarrier offset parameter K _SSB or the value of the subcarrier offset parameter K _SSB spliced with the extension parameter A falls into a fourth range, determining the type of the SSB as CD-SSB, and demodulating the CD-SSB to try to initiate the cell access.

When the value of the extension parameter a falls within the fifth range and the value of the subcarrier offset parameter K _SSB or the value of the subcarrier offset parameter K _SSB spliced with the extension parameter a falls within the sixth range, determining that the type of SSB is NCD-SSB, determining a target CD-SSB according to the NCD-SSB, and then demodulating the target CD-SSB to attempt to initiate cell access.

For example, the splicing manner of the subcarrier offset parameter K _SSB and the extension parameter a is still that the extension parameter a occupies the high order bit, the subcarrier offset parameter K _SSB occupies the low order bit, the extension parameter a occupies 1 bit, and the subcarrier offset parameter K _SSB occupies 4 bits.

In this example, if the value of the extension parameter a is null or falls within a third range (e.g., the third range is 0), then if the value of the subcarrier offset parameter K _SSB falls within a fourth range (e.g., the fourth range is 0-11) or the value of the subcarrier offset parameter K _SSB after being spliced with the extension parameter a falls within the fourth range (e.g., the fourth range is 0-11), then it may be determined that the type of SSB is CD-SSB, and cell access may be directly performed according to the CD-SSB. When the value of the extension parameter a falls within a fifth range (e.g., the fifth range is 1), if the value of the subcarrier offset parameter K _SSB falls within a sixth range (e.g., the sixth range is 12-13), or if the value of the subcarrier offset parameter K _SSB after splicing with the extension parameter a falls within the sixth range (the sixth range is 28-29), it is determined that the type of the SSB is NCD-SSB, and at this time, a target CD-SSB may be obtained according to the NCD-SSB, and then cell access may be performed according to the target CD-SSB.

It can be understood that the specific value range of the fourth range may be determined according to subcarrier intervals corresponding to SSB and CORESET #0 in practical situations.

Based on the above embodiment, when determining the target CD-SSB, the frequency domain position GSCN _NCD-SSB and the frequency domain position GSCN _NCD-SSB of the synchronization grid where the NCD-SSB is located can be determinedThe frequency domain location GSCN _CD-SSB of the target CD-SSB is determined.

For example, the value of the subcarrier offset parameter K _SSB and the frequency domain position offset are preconfiguredThe corresponding relation between the indication parameters and the corresponding pdcch-ConfigSIB1 can be used for obtaining the frequency domain position offset. After obtaining the frequency domain position offset, the frequency domain position offset can be added to the frequency domain position GSCN _NCD-SSB of the NCD-SSB to obtain the frequency domain position GSCN _CD-SSB of the target CD-SSB, e.g./>Wherein GSCN _NCD-SSB may be obtained by synchronizing the grids.

In this case, the indication parameter has a certain correspondence with the frequency domain position offset, such as when the indication parameter has a value of p ₂ +iAnd the value of the subcarrier offset parameter K _SSB or the minimum value of the subcarrier offset parameter K _SSB after being spliced with the extension parameter A falls into [256 multiplied by i+1, 256 multiplied by (i+1) ], wherein p ₂ is the minimum value of the subcarrier offset parameter K _SSB or the minimum value of the subcarrier offset parameter K _SSB after being spliced with the extension parameter A when the type of the SSB is NCD-SSB, i is an integer, and i is more than or equal to 0 and less than or equal to q-1. When the value of the indication parameter is p ₂ +i+q, the corresponding/>The value of the product falls into [ -256× (i+1), - (256×i+1) ].

Where q is an integer not less than 2, and p ₂ is the minimum value of the instruction parameter when the type of SSB is NCD-SSB. When q is equal to 3, reference can be made to Table 2, with p ₂ equal to 12. When i is equal to 0, the indication parameter takes a value of 12 and corresponds toThe value range of (1, 256) is 15 and the indication parameter corresponds to/>The value range of (2) is [ -256, -1]; when i is equal to 1, the value of the indication parameter is 13 and corresponds to/>The value range of (a) is [257, 512], and the indication parameter is 16 and corresponds to/>The value range of (C) is [ -512, -257]; when i is equal to 2, the value of the indication parameter is 14 and corresponds toThe range of values of [513, 768], the indication parameter is 17 and corresponds to/>The range of values of (C) is [ -768, -513]. Wherein/>The value range of (c) is incremented by 256 with the increment of the indication parameter, since pdcch-configSIB1 takes 8 bits.

In the implementation process, the type of SSB is indicated by the value of the indication parameter, and the indication parameter has a larger value range than the subcarrier offset parameter K _SSB, so that the indication parameter can offset the frequency domain position of the larger value rangeThe indication is made so that when the type of SSB is NCD-SSB, the terminal device can pass through the NCD-SSB corresponding toFind the appropriate CD-SSB.

On the basis of the above embodiment, the extension parameter a may be represented by at least one of the parameters subCarrierSpacingCommon, dmrs-TypeA-Position, cellBarred, intraFreqReselection, spare in the master information block MIB.

For example, when the extension parameter a occupies 1 bit, one of the parameters may be used for representation, and when the extension parameter occupies 2 bits, any two of the parameters may be used for combination for representation.

The extension parameter A is represented by the relevant parameter in the MIB, so that the extension parameter A can be represented without additional extension parameters, and the method is simpler.

Wherein, the parameter subCarrierSpacingCommon in MIB is used to represent the subcarrier interval of initial access, which occupies 1 bit. If the parameter subCarrierSpacingCommon is used to represent the extension parameter a, after the terminal device parses the value of the parameter, the value of the extension parameter a may be determined, and then the value of the indication parameter is determined jointly by combining the values of the subcarrier offset parameter K _SSB. In this case, the default system information block SIB1 of the terminal device, the subcarrier intervals of other system information OSI, the messages msg2, msg4 are the same as the SSB, so that the terminal device can obtain the subcarrier intervals from other information, and after resolving the parameter, can obtain the value of the extension parameter a.

The parameter dmrs-type a-Position in MIB is used to indicate the symbol Position of the first PDSCH DMRS in the slot, taking 1 bit. If the parameter dmrs-TypeA-Position is used to represent the extension parameter a, after the terminal device analyzes the value of the parameter, the value of the extension parameter a can be determined, and then the value of the indication parameter is determined jointly by combining the values of the subcarrier offset parameter K _SSB. At this time, the base station may fix the DMRS in the PBCH channel in the SSB, i.e. at the second symbol position pos2 or the third symbol position pos3, that is, the terminal device defaults to the DMRS of the PBCH to the second symbol position pos2 or the third symbol position pos3.

The parameter cellBarred in MIB is used to indicate whether the terminal device in permission resides in the cell, occupying 1 bit. If the parameter celbarred is used to represent the extension parameter a, after the terminal device parses the value of the parameter, the value of the extension parameter a may be determined, and then the value of the indication parameter is determined jointly by combining the values of the subcarrier offset parameter K _SSB. The terminal device forbids access by default cell when the type of SSB is determined to be NCD-SSB, and allows access when the type of SSB is determined to be CD-SSB.

The parameter intra freqreselection in MIB is used to control cell reselection to co-frequency cells, occupying 1 bit. If the parameter intrafreqselection is used to represent the extension parameter a, after the terminal device analyzes the value of the parameter, the value of the extension parameter a can be determined, and then the value of the indication parameter is determined jointly by combining the values of the subcarrier offset parameter K _SSB. The terminal device defaults to inhibit on-channel reselection if the type of SSB is determined to be NCD-SSB, and to allow on-channel reselection if the type of SSB is determined to be CD-SSB.

The parameter spark in MIB is a Spare parameter, occupying 1 bit. If the parameter spark is used to represent the extension parameter a, after the terminal device parses the value of the parameter, the value of the extension parameter a may be determined, and then the value of the indication parameter is determined jointly by combining the values of the subcarrier offset parameter K _SSB.

Referring to fig. 6, fig. 6 is a flowchart of an information broadcasting method according to an embodiment of the present application, where the method is applied to a base station, and includes the following steps:

step S310: the synchronization signal block SSB is broadcast.

The base station may broadcast the SSB so that the terminal device may attempt to perform cell access by scanning the SSB, i.e., the terminal device may search for the SSB in the frequency band, and determine whether to attempt to initiate cell access according to the searched SSB.

When the value of the indication parameter falls into a first range, the type of the SSB is represented as CD-SSB, and the value of the indication parameter represents subcarrier offset of the SSB;

And when the value of the indication parameter falls into a second range, characterizing the type of the SSB as NCD-SSB, wherein:

When the value of the indication parameter is p ₁ +i, the corresponding value is Wherein p ₁ is the minimum value of the indication parameter when the SSB is NCD-SSB, i is an integer, and i is more than or equal to 0 and less than or equal to q-1;

When the value of the extension parameter a is null or falls within a third range, and the value of the subcarrier offset parameter K _SSB or the value of the subcarrier offset parameter K _SSB after splicing with the extension parameter a falls within a fourth range, the type of the SSB is represented as CD-SSB, and the value of the subcarrier offset parameter K _SSB represents the subcarrier offset of the SSB;

When the value of the extension parameter a falls within a fifth range, and the value of the subcarrier offset parameter K _SSB or the value of the subcarrier offset parameter K _SSB after splicing with the extension parameter a falls within a sixth range, characterizing that the type of SSB is NCD-SSB, where:

When the value of the indication parameter is p ₂ +i, the corresponding value is Wherein p ₂ is the minimum value of the subcarrier offset parameter K _SSB or the minimum value of the subcarrier offset parameter K _SSB after splicing with the extension parameter A when the SSB is NCD-SSB, i is an integer, and i is more than or equal to 0 and less than or equal to q-1;

When the extension parameter a is represented by a parameter subCarrierSpacingCommon, configuring a subcarrier interval of a system information block SIB1, other system information OSI, a message msg2, msg4 to be the same as the SSB;

When the expansion parameter A is represented by a parameter DMRS-TypeA-Position, configuring the Position of a demodulation reference signal DMRS in a PBCH channel as pos2 or pos3;

When the expansion parameter A is expressed by a parameter cellBarred, configuring that a cell is allowed to access under the condition that the type of the SSB is CD-SSB, and prohibiting the cell from accessing under the condition that the type of the SSB is NCD-SSB;

When the expansion parameter A is expressed by a parameter intraFreqReselection, the same-frequency reselection is allowed when the SSB type is CD-SSB, and the same-frequency reselection is forbidden when the SSB type is NCD-SSB;

And/or the number of the groups of groups,

The number of bits occupied by the subcarrier offset parameter K _SSB is 4 bits, and the number of bits occupied by the extension parameter A is not less than 1 bit;

And/or the number of the groups of groups,

The minimum frequency value of the frequency band is not less than 52.6GHz.

It can be understood that, in this embodiment, the description of the related extension parameter a and the specific process of parameter analysis and cell access performed by the terminal device may refer to the description of the foregoing embodiment, and for convenience and brevity of description, the description will not be repeated here.

In the implementation process, the type of SSB is indicated by using the indication parameters including the subcarrier offset parameter K _SSB and the extension parameter a, and the indication parameter has a larger value range than the subcarrier offset parameter K _SSB due to the addition of the extension parameter a, so that the frequency domain position corresponding to the indication parameter is offsetThe value range of (a) can also be increased, so that when the number of the synchronous grids is increased, the configuration of the subcarrier offset parameter K _SSB is not affected and the frequency domain position offset/>Can also be indicated so that for the terminal device it is able to find the appropriate CD-SSB by the NCD-SSB, shortening the delay of its access to the cell.

Referring to fig. 7, fig. 7 is a block diagram illustrating a cell access apparatus 400 according to an embodiment of the present application, where the apparatus 400 may be a module, a program segment, or a code on a terminal device. It should be understood that the apparatus 400 corresponds to the above embodiment of the method of fig. 2, and is capable of executing the steps involved in the embodiment of the method of fig. 2, and specific functions of the apparatus 400 may be referred to in the above description, and detailed descriptions thereof are omitted herein as appropriate to avoid redundancy.

Optionally, the apparatus 400 includes:

A cell access module 410, configured to determine whether to attempt to initiate cell access according to the searched SSB when the synchronization signal block SSB is searched in the frequency band;

The cell access module 410 is configured to determine that the type of the SSB is a CD-SSB when the value of the indication parameter falls within a first range, and demodulate the CD-SSB to attempt to initiate cell access, where the value of the indication parameter characterizes a subcarrier offset of the SSB; and when the value of the indication parameter falls into a second range, determining the type of the SSB as NCD-SSB, determining a target CD-SSB according to the NCD-SSB, and demodulating the target CD-SSB to attempt to initiate cell access.

Optionally, the cell access module 410 is configured to determine, according to the frequency domain location GSCN _NCD-SSB of the synchronization grid where the NCD-SSB is located and theDetermining a frequency domain location GSCN _CD-SSB of the target CD-SSB;

The cell access module 410 is configured to determine that the type of the SSB is CD-SSB when the value of the extension parameter a is null or falls within a third range, and the value of the subcarrier offset parameter K _SSB or the value of the subcarrier offset parameter K _SSB after splicing with the extension parameter a falls within a fourth range, and demodulate the CD-SSB to attempt to initiate cell access, where the value of the subcarrier offset parameter K _SSB characterizes a subcarrier offset of the SSB; when the value of the extension parameter a falls within a fifth range and the value of the subcarrier offset parameter K _SSB or the value of the subcarrier offset parameter K _SSB after splicing with the extension parameter a falls within a sixth range, determining that the type of the SSB is NCD-SSB, determining a target CD-SSB according to the NCD-SSB, and demodulating the target CD-SSB to attempt to initiate cell access.

And/or the number of the groups of groups,

The minimum frequency value of the frequency band is not less than 52.6GHz.

Referring to fig. 8, fig. 8 is a block diagram illustrating a structure of an information broadcasting apparatus 500 according to an embodiment of the present application, where the apparatus 500 may be a module, a program segment, or a code on a base station. It should be understood that the apparatus 500 corresponds to the above embodiment of the method of fig. 3, and is capable of executing the steps involved in the embodiment of the method of fig. 3, and specific functions of the apparatus 500 may be referred to in the above description, and detailed descriptions thereof are omitted herein as appropriate to avoid redundancy.

Optionally, the apparatus 500 includes:

A broadcasting module 510 for broadcasting a synchronization signal block SSB;

Optionally, the indication parameter is obtained by splicing the subcarrier offset parameter K _SSB and the extension parameter a; wherein:

When the value of the indication parameter is p ₁ +i, the corresponding value is Wherein p ₁ is the minimum value of the indication parameter when the type of the SSB is NCD-SSB, i is an integer, and i is more than or equal to 0 and less than or equal to q-1;

When the value of the extension parameter a is null or falls within a third range, and the value of the subcarrier offset parameter K _SSB or the value of the subcarrier offset parameter K _SSB after splicing with the extension parameter a falls within a fourth range, the type of the SSB is represented as CD-SSB, where the value of the subcarrier offset parameter K _SSB represents the subcarrier offset of the SSB;

When the value of the indication parameter is p ₂ +i, the corresponding value is Wherein p ₂ is the minimum value of the subcarrier offset parameter K _SSB or the minimum value of the subcarrier offset parameter K _SSB after splicing with the extension parameter A when the type of the SSB is NCD-SSB, i is an integer, and i is more than or equal to 0 and less than or equal to q-1; /(I)

When the value of the indication parameter is p ₂ +i+q, the corresponding value is p ₂ +i+qThe value of the product falls into [ -256× (i+1), - (256×i+1) ].

And/or the number of the groups of groups,

The minimum frequency value of the frequency band is not less than 52.6GHZ.

It should be noted that, for convenience and brevity, a person skilled in the art will clearly understand that, for the specific working procedure of the apparatus described above, reference may be made to the corresponding procedure in the foregoing method embodiment, and the description will not be repeated here.

Referring to fig. 9, fig. 9 is a schematic structural diagram of an electronic device for executing an information broadcasting method or a cell access method according to an embodiment of the present application, where the electronic device may be the above base station or the terminal device, and the electronic device may include: at least one processor 610, such as a CPU, at least one communication interface 620, at least one memory 630, and at least one communication bus 640. Wherein communication bus 640 is used to enable direct connection communications for these components. The communication interface 620 of the device in the embodiment of the present application is used for performing signaling or data communication with other node devices. The memory 630 may be a high-speed RAM memory or a nonvolatile memory (non-volatile memory), such as at least one disk memory. Memory 630 may also optionally be at least one storage device located remotely from the aforementioned processor. The memory 630 has stored therein computer readable instructions which, when executed by the processor 610, perform the method processes described above in fig. 5 or 6.

It will be appreciated that the configuration shown in fig. 9 is merely illustrative, and that the electronic device may also include more or fewer components than shown in fig. 9, or have a different configuration than shown in fig. 9. The components shown in fig. 9 may be implemented in hardware, software, or a combination thereof.

Embodiments of the present application provide a computer readable storage medium having stored thereon a computer program which, when executed by a processor, performs a method process performed by an electronic device in a method embodiment as shown in fig. 5 or 6.

The present embodiment discloses a computer program product comprising a computer program stored on a non-transitory computer readable storage medium, the computer program comprising program instructions which, when executed by a computer, are capable of performing the methods provided by the above-described method embodiments, for example, comprising: when a synchronous signal block SSB is searched in a frequency band, determining whether to attempt to initiate cell access according to the searched SSB;

In summary, embodiments of the present application provide a cell access method, an information broadcasting method, an apparatus, and an electronic device, which utilize an indication parameter including a subcarrier offset parameter K _SSB and an extension parameter a to indicate a type of SSB, and since the extension parameter a is added, the indication parameter has a larger value range than the subcarrier offset parameter K _SSB, so that when the number of synchronization grids is configured to be increased, the configuration of the subcarrier offset parameter K _SSB is not affected and exceeds the frequency domain position offset of the original rangeCan also be indicated so that for the terminal device it is able to find the appropriate CD-SSB by the NCD-SSB, shortening the delay of its access to the cell.

In the embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other manners. The above-described apparatus embodiments are merely illustrative, for example, the division of the units is merely a logical function division, and there may be other manners of division in actual implementation, and for example, multiple units or components may be combined or 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 through some communication interface, device or unit indirect coupling or communication connection, which may be in electrical, mechanical or other form.

Further, the units described as separate units may or may not be physically separate, and units displayed as units may or may not be physical units, may be located in one place, or may be distributed over 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.

Furthermore, functional modules in various embodiments of the present application may be integrated together to form a single portion, or each module may exist alone, or two or more modules may be integrated to form a single portion.

In this document, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions.

The above description is only an example of the present application and is not intended to limit the scope of the present application, and various modifications and variations will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A method of cell access, applied to a terminal device, the method comprising:

When the indication parameter indicates that the type of the SSB is non-cell-defined NCD-SSB, the indication parameter corresponds to The value of (1) falls within [1, 256 xq ], where/>Characterizing the frequency domain position offset of a cell definition CD-SSB and a synchronization grid where the NCD-SSB is positioned, wherein q is an integer not less than 2, and the number value of the synchronization grid in the frequency band falls into (256× (q-1), 256×q ];

Wherein, the expansion parameter A is expressed by at least one parameter of parameters subCarrierSpacingCommon, dmrs-TypeA-Position, cellBarred, intraFreqReselection, spare in a main information block MIB;

When the extension parameter A is expressed by a parameter intraFreqReselection, the same-frequency reselection is allowed under the condition that the SSB type is CD-SSB, and the same-frequency reselection is forbidden under the condition that the SSB type is NCD-SSB.

2. The method according to claim 1, wherein the indication parameter is obtained by splicing the subcarrier offset parameter K _SSB and the extension parameter a;

3. The method of claim 2, wherein said determining a target CD-SSB from said NCD-SSB comprises:

4. The method according to claim 1, wherein the indication parameter is obtained by a combination of the subcarrier offset parameter K _SSB and the extension parameter a;

When the value of the extension parameter a falls within a fifth range and the value of the subcarrier offset parameter K _SSB or the value of the subcarrier offset parameter K _SSN after splicing with the extension parameter a falls within a sixth range, determining that the type of the SSB is NCD-SSB, determining a target CD-SSB according to the NCD-SSB, and demodulating the target CD-SSB to attempt to initiate cell access.

5. The method of claim 4, wherein said determining a target CD-SSB from said NCD-SSB comprises:

6. The method according to any one of claims 1 to 5, wherein,

And/or the number of the groups of groups,

The minimum frequency value of the frequency band is not less than 52.6GHz.

7. An information broadcasting method, applied to a base station, comprising:

broadcasting a synchronization signal block SSB;

When the indication parameter indicates that the type of the SSB is non-cell-defined NCD-SSB, the indication parameter corresponds to The value of (1) falls within [1, 256 xq ], where/>Characterizing the frequency domain position offset of a cell definition CD-SSB and a synchronization grid where the NCD-SSB is positioned, wherein q is an integer not less than 2, and the number value of the synchronization grid in the corresponding frequency band of the SSB falls into (256× (q-1), 256×q ];

8. A cell access device operable in a terminal device, the device comprising:

9. An information broadcasting apparatus operating in a base station, the apparatus comprising:

A broadcasting module for broadcasting the synchronization signal block SSB;

The expansion parameter A is represented by at least one parameter of parameters subCarrierSpacingCommon, dmrs-TypeA-Position, cellBarred, intraFreqReselection, spare in a main information block MIB;

10. An electronic device comprising a processor and a memory storing computer readable instructions that, when executed by the processor, perform the cell access method of any of claims 1-6 or the information broadcast method of claim 7.

11. A computer readable storage medium having stored thereon a computer program, which when executed by a processor performs the cell access method according to any of claims 1-6 or the information broadcast method according to claim 7.