CN113348696B

CN113348696B - Method and device for cell access

Info

Publication number: CN113348696B
Application number: CN201980089711.1A
Authority: CN
Inventors: 徐伟杰
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2019-06-25
Filing date: 2019-06-25
Publication date: 2023-02-28
Anticipated expiration: 2039-06-25
Also published as: WO2020258028A1; CN113348696A

Abstract

The application provides a method and equipment for cell access, which can avoid the mutual influence of the access of equipment of the Internet of things and equipment of a non-Internet of things to a cell. The method comprises the following steps: the method includes the steps that an internet of things device receives a first Physical Broadcast Channel (PBCH), wherein the first PBCH is a PBCH sent by a network device for the internet of things device, and the first PBCH and a second PBCH are different in at least one of the following aspects: a scrambling sequence of PBCH, and a synchronization channel grid for receiving PBCH, where the second PBCH is PBCH sent by the network device for a non-Internet-of-things device.

Description

Method and device for cell access

Technical Field

The present application relates to the field of communications, and more particularly, to a method and apparatus for cell access.

Background

The Internet of things equipment has the advantages of being low in cost, low in price, capable of supporting ultra-low power consumption, capable of supporting deep and wide coverage scenes and the like. The internet of things device may support some applications with low data transmission rate and high transmission delay, for example, the internet of things device may support transmission rates of 10MHz and 100Mbps, but at present, the bandwidth configuration of NR is usually greater than 10MHz, and since the bandwidths that the internet of things device and the NR device can support are different, how to control the internet of things device to access the cell is called a problem that needs to be solved urgently.

Disclosure of Invention

The application provides a method and equipment for cell access, which can avoid mutual influence of the access of equipment of the Internet of things and equipment of a non-Internet of things to a cell.

In a first aspect, a method for cell access is provided, including: the method includes the steps that the equipment of the Internet of things receives a first physical broadcast channel PBCH, wherein the first PBCH is a PBCH sent by the network equipment for the equipment of the Internet of things, and the first PBCH and the second PBCH are different in at least one of the following aspects: a scrambling sequence of PBCH, and a synchronization channel grid for receiving PBCH, where the second PBCH is PBCH sent by the network device for a non-Internet-of-things device.

In a second aspect, a method for cell access is provided, including: the method comprises the steps that the equipment of the Internet of things receives first system information, the first system information is system information which is sent by the network equipment aiming at the equipment of the Internet of things, a system information radio network temporary identifier (SI-RNTI) of a Physical Downlink Control Channel (PDCCH) used for scrambling and scheduling the first system information is different from the SI-RNTI of a PDCCH used for scrambling and scheduling second system information, and the second system information is system information which is sent by the network equipment aiming at non-equipment of the Internet of things.

In a third aspect, a method for cell access is provided, including: the method includes the network device transmitting a first physical broadcast channel, PBCH, the first PBCH being a PBCH transmitted by the network device for the internet of things device, wherein the first PBCH and the second PBCH are different in at least one of: a scrambling sequence of PBCH, and a synchronization channel grid for sending PBCH, where the second PBCH is PBCH sent by the network device for a non-Internet-of-things device.

In a fourth aspect, a method for cell access is provided, including: the method comprises the steps that network equipment sends first system information, the first system information is system information sent by the network equipment aiming at equipment of the Internet of things, a system information radio network temporary identifier (SI-RNTI) of a Physical Downlink Control Channel (PDCCH) used for scrambling and scheduling the first system information is different from the SI-RNTI of the PDCCH used for scrambling and scheduling second system information, and the second system information is system information sent by the network equipment aiming at equipment of the non-Internet of things.

In a fifth aspect, a terminal device is provided, configured to perform the method in any one of the first aspect to the second aspect or in each implementation manner thereof.

In particular, the terminal device comprises functional modules for performing the methods in any of the first to second aspects or implementations thereof described above.

A sixth aspect provides a network device configured to perform the method in any one of the third to fourth aspects or implementations thereof.

In particular, the network device comprises functional modules for performing the methods in any of the third to fourth aspects or implementations thereof described above.

In a seventh aspect, a terminal device is provided that includes a processor and a memory. The memory is used for storing a computer program, and the processor is used for calling and running the computer program stored in the memory, and executing the method in any one of the first aspect to the second aspect or each implementation manner thereof.

In an eighth aspect, a network device is provided that includes a processor and a memory. The memory is used for storing a computer program, and the processor is used for calling and running the computer program stored in the memory, and executing the method in any one of the third aspect to the fourth aspect or each implementation manner thereof.

In a ninth aspect, there is provided an apparatus for implementing the method of any one of the first to fourth aspects or implementations thereof.

Specifically, the apparatus includes: a processor configured to invoke and execute the computer program from the memory, so that the device on which the apparatus is installed performs the method in any one of the first to fourth aspects or the implementations thereof as described above.

A tenth aspect provides a computer-readable storage medium for storing a computer program, the computer program causing a computer to perform the method of any one of the first to fourth aspects or implementations thereof.

In an eleventh aspect, there is provided a computer program product comprising computer program instructions for causing a computer to perform the method of any of the first to fourth aspects or implementations thereof.

In a twelfth aspect, there is provided a computer program which, when run on a computer, causes the computer to perform the method of any one of the first to fourth aspects or implementations thereof.

The technical scheme provided by the application, the scrambling code sequences and/or the transmission synchronization channel grids of the first PBCH for the Internet of things equipment and the second PBCH for the non-Internet of things equipment are different, and the PBCH can be used for cell access, so that the PBCH are different, and the mutual influence of the Internet of things equipment and the non-Internet of things equipment on cell access can be avoided.

In addition, for the internet of things equipment, the SI-RNTI of the PDCCH used for scheduling the first system information and the SI-RNTI of the PDCCH used for scheduling the second system information of the non-internet of things equipment are used, so that the non-internet of things equipment cannot read the first system information of the internet of things equipment, cannot access to a cell of the internet of things equipment, and can avoid the mutual influence of the internet of things equipment and the non-internet of things equipment accessing to the cell.

Drawings

Fig. 1 is a schematic diagram of a wireless communication system to which an embodiment of the present application is applied.

Fig. 2 is a schematic diagram of PDCCH core set provided in the embodiment of the present application.

Fig. 3 is a schematic flowchart of a method for cell access according to an embodiment of the present application.

Fig. 4 is a schematic flow chart of another method for cell access according to an embodiment of the present application.

Fig. 5 is a schematic block diagram of a terminal device according to an embodiment of the present application.

Fig. 6 is a schematic block diagram of another terminal device provided in an embodiment of the present application.

Fig. 7 is a schematic block diagram of a network device according to an embodiment of the present application.

Fig. 8 is a schematic block diagram of another network device provided in an embodiment of the present application.

Fig. 9 is a schematic configuration diagram of a communication apparatus according to an embodiment of the present application.

Fig. 10 is a schematic configuration diagram of a communication device according to an embodiment of the present application.

Fig. 11 is a schematic block diagram of a communication system of an embodiment of the present application.

Detailed Description

Fig. 1 is a schematic diagram of a system 100 according to an embodiment of the present application.

As shown in fig. 1, a terminal device 110 is connected to a first network device 130 in a first communication system and a second network device 120 in a second communication system, for example, the first network device 130 is a network device in Long Term Evolution (LTE), and the second network device 120 is a network device in New Radio (NR).

The first network device 130 and the second network device 120 may include a plurality of cells.

It should be understood that fig. 1 is an example of a communication system of the embodiment of the present application, and the embodiment of the present application is not limited to that shown in fig. 1.

As an example, a communication system adapted by the embodiment of the present application may include at least a plurality of network devices under the first communication system and/or a plurality of network devices under the second communication system.

For example, the system 100 shown in fig. 1 may include one primary network device under a first communication system and at least one secondary network device under a second communication system. At least one auxiliary network device is connected to the one main network device, respectively, to form a multi-connection, and is connected to the terminal device 110, respectively, to provide a service thereto. In particular, terminal device 110 may establish a connection through both the primary network device and the secondary network device.

Optionally, the connection established between the terminal device 110 and the primary network device is a primary connection, and the connection established between the terminal device 110 and the secondary network device is a secondary connection. The control signaling of the terminal device 110 may be transmitted through the main connection, and the data of the terminal device 110 may be transmitted through the main connection and the auxiliary connection simultaneously, or may be transmitted through only the auxiliary connection.

As still another example, the first communication system and the second communication system in the embodiment of the present application are different, but the specific category of the first communication system and the second communication system is not limited.

For example, the first communication system and the second communication system may be various communication systems, such as: a Global System for Mobile communications (GSM) System, a Code Division Multiple Access (CDMA) System, a Wideband Code Division Multiple Access (WCDMA) System, a General Packet Radio Service (GPRS), a Long Term Evolution (Long Term Evolution, LTE) System, a Time Division Duplex (TDD), a Universal Mobile Telecommunications System (UMTS), and the like.

The primary network device and the secondary network device may be any access network device.

Optionally, in some embodiments, the Access network device may be a Base Transceiver Station (BTS) in a Global System for Mobile communications (GSM) System or a Code Division Multiple Access (CDMA) System, a Base Station (NodeB, NB) in a Wideband Code Division Multiple Access (WCDMA) System, or an evolved Node B (eNB or eNodeB) in a Long Term Evolution (Long Term Evolution) System.

Optionally, the Access Network device may also be a Next Generation Radio Access Network (NGRAN), or a base station (gNB) in an NR system, or a wireless controller in a Cloud Radio Access Network (CRAN), or the Access Network device may be a relay station, an Access point, an in-vehicle device, a wearable device, or a Network device in a Public Land Mobile Network (PLMN) for future evolution, or the like.

In the system 100 shown in fig. 1, the first network device 130 is taken as a main network device, and the second network device 120 is taken as an auxiliary network device.

The first network device 130 may be an LTE network device and the second network device 120 may be an NR network device. Alternatively, the first network device 130 may be an NR network device and the second network device 120 may be an LTE network device. Or both the first network device 130 and the second network device 120 may be NR network devices. Or the first network device 130 may be a GSM network device, a CDMA network device, etc., and the second network device 120 may also be a GSM network device, a CDMA network device, etc. Alternatively, the first network device 130 may be a macro base station (macro cell), and the second network device 120 may be a micro cell base station (micro cell), a pico cell base station (pico cell), a femto cell base station (Femtocell), or the like.

Optionally, the terminal device 110 may be any terminal device, and the terminal device 110 includes but is not limited to:

via a wireline connection, such as via a Public Switched Telephone Network (PSTN), a Digital Subscriber Line (DSL), a Digital cable, a direct cable connection; and/or another data connection/network; and/or via a Wireless interface, such as for a cellular Network, a Wireless Local Area Network (WLAN), a digital television Network such as a DVB-H Network, a satellite Network, an AM-FM broadcast transmitter; and/or means of another terminal device arranged to receive/transmit communication signals; and/or Internet of Things (IoT) devices. A terminal device arranged to communicate over a wireless interface may be referred to as a "wireless communication terminal", "wireless terminal" or "mobile terminal". Examples of mobile terminals include, but are not limited to, satellite or cellular telephones; personal Communications Systems (PCS) terminals that may combine cellular radiotelephones with data processing, facsimile, and data Communications capabilities; PDAs that may include radiotelephones, pagers, internet/intranet access, web browsers, notepads, calendars, and/or Global Positioning System (GPS) receivers; and conventional laptop and/or palmtop receivers or other electronic devices that include a radiotelephone transceiver. Terminal Equipment 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 (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device having Wireless communication capabilities, a computing device or other processing device connected to a Wireless modem, a vehicle mounted device, a wearable device, a terminal device in a 5G network, or a terminal device in a future evolved PLMN, etc.

It should be understood that the terms "system" and "network" are often used interchangeably herein.

Under the continuous evolution and assistance of wireless communication technology, the internet of things (IoT) technology is rapidly developing. The MTC (machine type communication), enhanced MTC (eMTC), ioT series standard, developed as driven by the third generation partnership project (3 gpp) organization, is a candidate technology standard for the 5G massive MTC technology. The technical standards are expected to play a great role in the aspects of production and life of people such as smart homes, smart cities, smart factories, remote monitoring, smart traffic and the like.

The terminal of the internet of things has the advantages of low cost, low price, support of ultra-low power consumption, support of deep and wide coverage scenes and the like, and is beneficial to rapid popularization in the early development stage of the technology of the internet of things. However, these devices have some limitations in application scenarios, and since the MTC/eMTC devices and IoT devices are designed to support some applications with low data rate and high transmission delay, they cannot be applied to some scenarios of internet of things that need to have relatively high data rate, such as video monitoring in smart security and industrial applications that require relatively low delay. However, if the terminal device with high transmission rate and low transmission delay is directly used, the actual requirements of these scenarios are far exceeded, and unnecessary cost is increased. Therefore, an internet of things type device supporting medium transmission rate, medium delay requirement and medium and low bandwidth size is proposed, for example, a transmission rate of 10MHz bandwidth and 100Mbps can be supported.

The terminal device mentioned in the embodiment of the application may include an internet of things device, and may also include a non-internet of things device. For example, the terminal device shown in fig. 1 may include an internet of things device, and may also include a non-internet of things device.

The internet of things device in the embodiment of the present application may have one or more of the following features as compared to a non-internet of things device: 1) A narrower bandwidth; 2) A smaller number of antennas; 3) Support lower data transmission rates; 4) Lower maximum transmit power.

When a terminal device accesses a cell, a synchronization signal/PBCH Block (SSB, SS Block, or SS/PBCH Block) needs to be detected. The SSB may include, for example, a Primary Synchronization Signal (PSS), a Secondary Synchronization Signal (SSS), and a Physical Broadcast Channel (PBCH).

The PBCH may be configured to indicate configuration information of a Physical Downlink Control Channel (PDCCH) control resource set (core set), the terminal device may obtain Remaining Minimum System Information (RMSI) in the PDCCH core set, and the terminal device may perform cell access according to information in the RMSI.

Taking NR system as an example, when a subcarrier spacing of 15kHz is adopted, the PDCCH core may be configured as 24, 48, 96 Physical Resource Blocks (PRBs). As shown in table 1, table 1 shows one example of PBCH configuring RMSI PDCCH core.

TABLE 1

RB denotes a Resource Block (RB).

Taking index number 1 as an example, when index number is 1, the SSB and CORESET multiplexing mode is mode 1, the number of RBs occupied by PDCCH CORESET is 24, the number of symbols occupied by PDCCH CORESET is 2, and the offset of RB is 2, that is, the resource position of PDCCH CORESET is offset by 2 RBs.

The non-internet-of-things device in the embodiment of the application may include an NR terminal.

Referring to fig. 2, the subcarrier spacing, the occupied bandwidth size, and the frequency band position of the initial active downlink bandwidth part (initial active DL BWP) in the nr are consistent with the above PDCCH core set. Transmission of system messages, such as RMSI, system Information Block (SIB), paging (paging) messages, random Access Response (RAR) messages, etc., required for an initial access procedure of the terminal device is required in the bandwidth part (BWP).

Currently, the bandwidth configuration of the RMSI PDCCH core of the NR system is typically 96 PRBs, assuming a subcarrier spacing of 15KHz, and thus the bandwidth configuration of the NR system is greater than 10 MHz. If the terminal of the internet of things and the NR terminal share one RMSI, the bandwidth configuration of the terminal of the internet of things is usually less than or equal to 10MHz and less than that of an NR system, and the terminal of the internet of things cannot read the RMSI of the NR due to the bandwidth limitation at the moment, so that the terminal of the internet of things cannot access a cell; on the other hand, if the network configures the bandwidth of the terminal of the internet of things while configuring the RMSIPDCCHCORESET of the NR, the configuration of the network is limited, and the flexibility of network deployment is affected.

Therefore, in order to smoothly perform the initial access process of the terminal of the internet of things, a possible way is to deploy a special cell for the terminal of the internet of things, and configure a special RMSI PDCCH core for the terminal of the internet of things, so that the bandwidth is smaller than the bandwidth supported by the terminal of the internet of things.

However, if a special RMSI PDCCH core is configured for the terminal in the internet of things, the special RMSI PDCCH core configured for the terminal in the internet of things may also be acquired by a normal non-terminal (e.g., NR terminal) in the internet of things, which may cause the non-internet-of-things device to access the cell in the internet of things, thereby affecting access and data transmission of the device in the internet of things.

Therefore, the embodiment of the application provides a method for cell access, which can avoid the mutual influence of an internet of things terminal and a non-internet of things terminal during cell access.

Fig. 3 is a method for cell access according to an embodiment of the present application, where the method of fig. 3 includes steps S310 to S320.

S310, a network device sends a first PBCH to an internet of things device, where the first PBCH is a PBCH sent by the network device for the internet of things device, and the first PBCH and the second PBCH are different from each other in at least one of the following aspects: a scrambling sequence of PBCH, and a synchronization channel grid for receiving PBCH, where the second PBCH is PBCH sent by the network device for a non-Internet-of-things device.

S320, the Internet of things equipment receives the first PBCH sent by the network equipment.

The internet of things device in the embodiment of the present application may refer to a terminal device with low requirements on transmission rate and/or transmission delay, for example, the internet of things device may include an IoT device, or the internet of things device may include an MTC device.

The non-internet-of-things device may refer to a terminal device with a relatively high requirement on transmission delay and/or transmission rate, for example, the non-internet-of-things device may include an enhanced mobile broadband (eMBB) device, or the non-internet-of-things device may include an Ultra Reliable Low Latency Communications (URLLC) device.

The first PBCH is a PBCH sent by the network device for the internet of things device, and after receiving the first PBCH, the internet of things device may access the cell according to the first PBCH, that is, the internet of things device may access the cell deployed for the internet of things device according to the first PBCH. For example, the first PBCH may be used for the MTC terminal to access the MTC cell, and the MTC terminal may access the MTC cell according to the first PBCH after receiving the first PBCH.

The second PBCH is a PBCH sent by the network device for the non-internet-of-things device, and the second PBCH may be used for the non-internet-of-things device to access a cell deployed for the non-internet-of-things device, for example.

The internet of things equipment and the non-internet of things equipment can be collectively referred to as terminal equipment, and the terminal equipment described hereinafter can be internet of things equipment or non-internet of things equipment.

The PBCH is used for the terminal device to access the cell, and may refer to that the terminal device may obtain a resource location of the system information through the PBCH, and then obtain the system information for cell access from the resource location of the system information, so as to perform cell access according to the system information.

In the embodiment of the application, the mode that the internet of things equipment acquires the first PBCH is different from the mode that the non-internet of things equipment acquires the second PBCH, so that the non-internet of things equipment cannot acquire the first PBCH of the internet of things equipment, and cannot access to the cell deployed for the internet of things equipment according to the first PBCH, and thus mutual influence between the internet of things equipment and the non-internet of things equipment in the cell access process can be avoided.

The first PBCH and the second PBCH differ in at least one of the following aspects: a scrambling sequence of the PBCH, a synchronization channel grid in which the PBCH is transmitted.

The scrambling sequence of PBCH may be s _i To show, assume that PBCH's original bit sequence is a _i The bit sequence after scrambling is a' _i In other words, a' _i May be according to a _i And s _i Wherein i =0,1, 2.., a-1, a is the length of the bit sequence of the PBCH. a is ₁ 、a ₂ 、...、a _A-1 Each corresponding to a different bit, which may be used to indicate different content.

The network device may be based on the scrambling sequence s _i Original loading sequence a for PBCH _i Scrambling is carried out to obtain a scrambled payload sequence a' _i And sending the scrambled load sequence a to the terminal equipment _i (ii) a The terminal equipment receives the load sequence a 'sent by the network equipment' _i Thereafter, a scrambling sequence s may be used _i To the loading sequence a' _i Descrambling is carried out to obtain an original load sequence a _i 。

In the embodiment of the application, s for scrambling first PBCH _i And s for scrambling the second PBCH _i The method can be different, so that the non-internet-of-things equipment cannot acquire the first PBCH for the internet-of-things equipment, and therefore mutual influence of the non-internet-of-things equipment and the internet-of-things equipment in a cell access process can be avoided.

Examples of the present application are to _i And s _i Determining a' _i The manner of (d) is not particularly limited. For example, a 'can be determined by the following equation 1' _i 。

a′ _i ＝(a _i +s _i ) mod2 equation 1

Where mod represents the modulo operation. Equation 1 is merely an example, a' _i It may also be determined by other formulas.

The embodiment of the application is to the scrambling code sequence s _i The generation method of (c) is not particularly limited. For example, scrambling code sequence s _i May be determined from the gold sequence c (n), which may be determined, for example, by the following equation 2.

c(n)＝(x ₁ (n+N _c )+x ₂ (n+N _c ))mod2

x ₁ (n+31)＝(x ₁ (n+3)+x ₁ (n))mod2

x ₂ (n+31)＝(x ₂ (n+3)+x ₂ (n+2)+x ₂ (n+1)+x ₂ (n)) mod2 equation 2

Wherein N is _c Is a fixed value, N _c For example, may be 1600.

As an example, the initial value x ₁ (0)＝0，x ₁ (n) =0, n =1, 2.., 30. In the case where a System Frame Number (SFN) satisfies mod (SFN, 8) =0, when n is an integer less than or equal to 30, x ₂ Initial value C of (n) _init Can be equal to

An Identity (ID) number of the cell is represented, that is, when n is an integer less than or equal to 30, values of x2 (n) are the same and are fixed values.

C _init May be associated with the cell in which the terminal device is located, e.g. C _init Is equal to the ID number of the cell where the terminal device is located, and if the location of the terminal device is determined, C is _init The value of (c) is already fixed. At present, the cell ID number of the non-Internet-of-things equipment is an integer from 0 to 1023, C _init The value of (d) may be any integer from 0 to 1023.

Scrambling sequence s for first and second PBCH _i May be obtained by different operations based on the gold sequence c (n), or the scrambling sequence s _i The gold sequence c (n) is obtained by the same operation, but the values of the gold sequence c (n) are different.

As an example, assume a scrambling sequence s _i Are generated by the following equation 3.

s _i = c (i + m) formula 3

m is an integer, and the value of c (i + m) can be determined by equation 2, where n = i + m.

In particular, s ₀ ＝c(0+m)，s ₁ ＝c(1+m)，...，s _A-1 = c (A-1 + m), so that the scrambling code sequence s can be calculated _i 。

The value of m may be different for the first PBCH and the second PBCH, so that the resulting value of c (i + m) is different, the scrambling sequence s _i Will also be different. Alternatively, m may have the same value, but the gold sequence c (n) has a different initial value, thus obtaining the scrambling sequence s _i May also differ. Or, the value of m is different from the initial value of gold sequence c (n), and the obtained scrambling code sequence s _i May also differ.

The following describes different cases, respectively.

As an example, the scrambling sequence s of the first PBCH _i And a scrambling sequence s of a second PBCH _i Are all generated by formula 3, but m has a different value, so that the scrambling sequence s obtained by formula 2 _i Will be different.

Wherein, the value of m can be determined according to v, and v is determined according to the second and third Least Significant Bits (LSB) of the system frame number SFN carried by the PBCH, and then the v values determined for the second and third least significant bits of the SFN carried by the first PBCH are different from the v values determined for the second and third least significant bits of the SFN carried by the second PBCH.

In general, the rightmost bit and the leftmost bit in the bit sequence of the SFN are the least significant bits, and the importance degree decreases from left to right. Therefore, the second and third bits from right to left may be understood as the second and third least significant bits mentioned in the embodiments of the present application.

For example, the v values determined for the first PBCH are different from the v values determined for the second PBCH for the second and third least significant bits of the same SFN.

As shown in tables 2 and 3, tables 2 and 3 show two cases of the value of v, respectively.

TABLE 2

TABLE 3

At present, the v value of the second PBCH for the non-internet-of-things device is obtained through table 2, and in the embodiment of the present application, the v value of the first PBCH for the internet-of-things device can be determined through table 3, so that different gold sequences c (n) are obtained through different v values, and thus different scrambling sequences s are obtained _i 。

Table 3 is only an example, and the value of v for the first PBCH is not limited to the value of table 3, as long as the obtained v values are different for the same bit.

For example, scrambling sequence s of the first PBCH _i The minimum value of the adopted values of v is larger than the scrambling code sequence s of the second PBCH _i The maximum value of the values of v used. If the value of v for the second PBCH is obtained through table 2, that is, the value of v for the second PBCH is an integer less than 3, it is sufficient if the values of v for the first PBCH are all greater than 3.

For another example, the value of v for the first PBCH may also be obtained from table 4.

TABLE 4

Since the value of v for the second PBCH is determined by table 2, the resulting v values are different even for the same SFN bits. For example, the second and third least significant bits of SFN are both (0, 0), the v value obtained for the first PBCH is 3, the v value obtained for the second PBCH is 0, and thus the scrambling sequence s obtained for the first PBCH and the second PBCH _i Different, can avoid non-thing networking equipment to insert the district of thing networking equipment.

Certainly, the value of v for the first PBCH is not limited to the forms in table 3 and table 4, and may also be in other forms, which is not specifically limited in this embodiment of the present application.

As another example, the initial values of gold sequences c (n) are all different. As shown in equation 2, the initial value of c (n) is x ₁ (n) and x ₂ The initial values of (n) are related, so that different x can be respectively defined for the Internet of things equipment and the non-Internet of things equipment ₁ (n) and x ₂ Initial value of (n).

Taking the initial values of x2 (n) of the internet of things equipment and the non-internet of things equipment as examples, the scrambling code sequence s aiming at the first PBCH _i Using an initial value of C _init And a scrambling sequence s for a second PBCH _i Initial value C adopted _init The value ranges of (A) and (B) are different. For example, scrambling sequence s of the first PBCH _i Using an initial value of C _init Is larger than the scrambling code sequence s of the second PBCH _i Using an initial value of C _init Such that C for the first PBCH is not considered _init What value, C for the second PBCH _init Will not be associated with C for the first PBCH _init The same, the non-internet-of-things equipment can be prevented from accessing the cell of the internet-of-things equipment.

Scrambling sequence s of the first PBCH _i Using an initial value of C _init Means that all C can be used for the first PBCH _init Of the value of (a), the scrambling sequence s of the second PBCH _i Using an initial value of C _init The maximum value in (b) may indicate that all C's can be used for the second PBCH _init Is the maximum value of (a).

Currently, for non-internet-of-things devices, x is x when SFN satisfies mod (SFN, 8) =0 ₂ (n) has an initial value of C _init ，

Indicating the Identity (ID) of the cell. The value range of the cell ID of the non-Internet-of-things equipment is 0-1023, and then x for the Internet-of-things equipment ₂ (n) has an initial value of C _init The scrambling sequence s, which may be greater than 1023, i.e. the first PBCH _i Using an initial value of C _init Greater than or equal to 1024.

As yet another example, the m values employed for the first PBCH and for the second PBCH are different. For example, scrambling sequence s of the first PBCH _i The value of m is the scrambling code sequence s of the second PBCH _i And increasing the first offset on the basis of the value of the adopted m.

For example, the first offset may be an integer greater than 0, and the scrambling code sequence s is obtained from the gold sequence c (n) as long as the first offset is greater than 0 _i It is different.

For another example, the first offset may be greater than or equal to a maximum value of values of m for the second PBCH, and thus a minimum value of values of m for the first PBCH is also greater than a maximum value of values of m for the second PBCH, so that the scrambling sequence s obtained by m _i Is different.

Assuming that m = vM, there is the following equation 4.

s _i = c (i + vM) formula 4

Wherein M is determined according to the length A of the loading sequence of PBCH.

L may take the value 4,8, 64, when L =4 or L =8, M = a-3; when L =64, M = a-6,l indicates the number of SSBs, and a indicates the length of the payload sequence of the PBCH.

If scrambling sequence s for the second PBCH _i Is obtained according to equation 4, then the scrambling sequence s for the first PBCH _i May be obtained by the following equation 5.

s _i = c (i + vM + X) formula 5

Wherein X may represent a first offset. The value of X may be predefined, and may take on, for example, an integer greater than or equal to 96.

In general, the length of the loading sequence of PBCH is less than or equal to 24, therefore, A ≦ 24, so that the maximum value of i is 24; for the second PBCH, v has a maximum value of 3, M has a maximum value of 24, and thus a maximum value of n in the gold sequence c (n) of 96 is obtained. Therefore, the value of the first offset X for the first PBCH may be greater than or equal to 96, so that the scrambling sequence s obtained by equation 4 and equation 5 _i Are not the same.

For convenience of understanding, the method of the embodiments of the present application will be described in detail below with reference to specific examples.

The original load sequence of PBCH is a ₀ ，a ₁ ，...，a _A-1 By scrambling sequences s _i The sequence after scrambling is a' ₀ ，a′ ₁ ，...，a′ _A-1 Wherein, a' _i ＝(a _i +s _i ) mod2, a represents the length of the payload sequence of PBCH. Scrambling code sequence s ₀ ，s ₁ ，...，s _A-1 Can be generated by the following script formula:

i＝0；

j＝0；

While i＜A；

If a _i the index of the corresponding SSB, the field index (the half frame index), or the second and third least significant bits of the SFN:

s _i ＝0；

otherwise:

s _i ＝c(j+vM)；

j＝j+1；

end if

i＝i+1；

end while.

wherein c (n) is a gold sequence, and the value of c (n) can be obtained by formula 2.

In formula 2, N _c =1600, initial value x ₁ (0)＝0，x ₁ (n) =0, n =1, 2.., 30. In the case where SFN satisfies mod (SFN, 8) =0, x ₂ Initial value C of (n) _init Can be equal to

Indicating the Identity (ID) number of the cell.

When L =4 or L = M = a-3; when L =64, M = a-6, where L denotes the number of SSBs.

v may be determined based on the second and third least significant bits of the SFN carried by the PBCH. As shown in tables 2-4 above.

Scrambling sequences s of a first PBCH and a second PBCH _i The differences can be embodied by the following aspects:

1、x ₂ the initial value of (n) is different. X of the first PDCH ₂ The initial value of (n) may be x of the second PBCH ₂ The initial value of (n) is increased by an offset, which may be predefined, for example, an integer greater than or equal to 1024.

2. The gold sequences c (n) differ. Scrambling sequence s of the second PBCH _i Generated by gold sequence c (n) of equation 4, scrambling sequence s of the first PBCH _i Is generated by the gold sequence c (n) of formula 5. The offset X is predefined and may be, for example, an integer greater than or equal to 96.

3. The values of v in equation 4 are different. The v value determined according to the first PBCH is different from the v value determined according to the second PBCH for the second and third least significant bits of the same SFN. For example, v values for the second PBCH are generated by table 2, and v values for the first PBCH are generated by table 3 or table 4.

In order to avoid that the non-internet-of-things equipment accesses the cell of the internet-of-things equipment by searching the SSB transmitted by the internet-of-things equipment, another possible method is that the synchronization channel grid (sync raster) of the SSB transmitted by the internet-of-things equipment is different from the synchronization channel grid of the non-internet-of-things equipment, so that the non-internet-of-things equipment cannot search the SSB transmitted by the internet-of-things equipment, and therefore cannot access the cell of the internet-of-things equipment.

The transmission SSB synchronization channel grid can be understood as the frequency location of the transmission SSB. Since the PBCH is included in the SSB, the synchronization channel grid transmitting the PBCH in the embodiment of the present application may be understood as the synchronization channel grid transmitting the SSB.

For a network device, the synchronization channel grid transmitting the PBCH may refer to a synchronization channel grid transmitting the PBCH; for a terminal device, the synchronization channel grid on which the PBCH is transmitted may refer to the synchronization channel grid on which the PBCH is received.

The synchronization channel grid of the first PBCH received by the Internet of things equipment and the synchronization channel grid of the second PBCH received by the non-Internet of things equipment have a frequency interval, and the frequency interval enables the frequency range searched by the non-Internet of things equipment when the non-Internet of things equipment receives the second PBCH not to include the synchronization channel grid of the first PBCH received by the Internet of things equipment.

A frequency interval is provided between the synchronization channel grid of the first PBCH sent by the network device and the synchronization channel grid of the second PBCH sent by the network device, and the frequency interval enables the frequency range searched by the non-internet-of-things device when receiving the second PBCH not to include the synchronization channel grid of the first PBCH received by the internet-of-things device.

For example, an additional bias may be added to a calculation formula of the Sync aster of the existing non-internet-of-things device, so that a sufficient frequency interval (for example, greater than the maximum frequency deviation allowed by SSB detection) exists between the Sync aster used by the internet-of-things device and the Sync aster used by the existing non-internet-of-things device, and thus, other non-internet-of-things devices do not search for the SSB sent by the terminal of the internet-of-things device, and therefore, do not access to the cell of the internet-of-things device.

As an example, the synchronization channel grid of the internet of things device receiving the first PBCH is located at a middle position of two adjacent synchronization channel grids of the non-internet of things device receiving the second PBCH. The synchronization channel grid of the first PBCH sent by the network equipment is positioned in the middle position of two adjacent synchronization channel grids of the second PBCH sent by the network equipment.

The following describes calculation formulas of the synchronization channel grids of the internet of things device and the non-internet of things device with reference to tables 5 and 6.

Table 5 shows a calculation method of a synchronization channel grid of a non-internet-of-things device.

TABLE 5

Among them, the GSCN may represent a Global Synchronization Channel Number (GSCN).

When the frequency ranges between 0-3000MHz, N may be any integer between 1-2499 and M may be any value of 1,3,5. When N =1, the frequency location of the SSB may be 1250kHz, 1350kHz, 1450kHz; when N =2, the frequency position of the SSB may be 2450kHz, 2550kHz, 2650kHz; the electric power supply unit is connected with the power supply unit; and by analogy, all frequency positions of the SSB of the non-Internet-of-things equipment with the frequency between 0 and 3000MHz are obtained.

When the frequency range is between 3000MHz-24250MHz, N may be any integer between 0 and 14756. When N =0, the frequency location of the SSB may be 3000MHz; when N =1, the frequency location of the SSB may be 3001.44MHz; a cut-out; and in the same way, all the frequency positions of the SSB of the non-Internet-of-things equipment with the frequency between 3000MHz and 24250MHz are obtained.

Table 6 shows a calculation method of a synchronization channel grid of an internet of things device according to an embodiment of the present application.

TABLE 6

When the frequency ranges between 0 and 3000MHz, N may be any integer between 1 and 2499, and M may be any value of 1,3,5. When N =1, the frequency position of the SSB may be 1850kHz, 1950kHz, 2050kHz; when N =2, the frequency position of the SSB may be 3050kHz, 3150kHz, 3250kHz; a cut-out; and in the same way, obtaining all frequency positions of the SSB of the frequency of the Internet of things equipment between 0 and 3000 MHz.

When the frequency range is between 3000MHz-24250MHz, N may be any integer between 0 and 14756. When N =0, the frequency location of the SSB may be 3000MHz; when N =1, the frequency location of the SSB may be 3001.44MHz; a cut-out; and in the same way, obtaining all frequency positions of the SSB of the frequency of the Internet of things equipment between 3000MHz and 24250 MHz.

As can be seen from tables 5 and 6, the frequency positions of the SSBs in table 6 are at the middle positions of the frequency positions of the consecutive two SSBs in table 5. Therefore, sufficient frequency interval exists between the frequency position of the SSB of the Internet of things equipment and the frequency position of the SSB of the non-Internet of things equipment, so that the non-Internet of things equipment cannot search the SSB aiming at the Internet of things equipment, and cannot access a cell deployed aiming at the Internet of things equipment.

Fig. 4 is another method for cell access according to an embodiment of the present application, where the method includes steps S410 to S420.

S410, the network equipment sends the first system information to the terminal equipment.

S420, the terminal device receives the first system information sent by the network device.

The first system information is system information sent by a network device for the internet of things, and is a system information radio network temporary identity (SI-RNTI) of a PDCCH (physical downlink control channel) for scrambling and scheduling the first system information, and is different from the SI-RNTI of the PDCCH for scrambling and scheduling the second system information, and the second system information is system information sent by the network device for a non-internet of things device.

The system information can include common parameters configured for the cell, the first system information can be used for the internet of things equipment to obtain the common parameters configured for the cell of the internet of things equipment, and then the internet of things equipment can be accessed to the cell of the internet of things equipment according to the first system information; the second system information can be used for the non-internet-of-things equipment to acquire public parameters configured by the cell of the non-internet-of-things equipment, and then the non-internet-of-things equipment can access the cell of the non-internet-of-things equipment according to the second system information.

As can be seen from the above description, when accessing a cell, a terminal device needs to detect an SSB, where the SSB includes a PBCH, and the PBCH can be used for indicating a PDCCH core set of system information, and the terminal device can obtain the system information from the PDCCH core set and then access the cell according to the system information.

The PDCCH used for scheduling the system information can be scrambled through SI-RNTI, and the embodiment of the application aims at equipment in the Internet of things and can adopt special SI-RNTI which is different from SI-RNTI used for scrambling the PDCCH by equipment in the non-Internet of things.

The internet of things equipment can read the system information broadcast by the internet of things equipment through the special SI-RNTI, but even if other non-internet of things equipment correctly reads PBCH sent by the internet of things equipment and reads PDCCH CORESET aiming at the internet of things equipment based on the indication of the PBCH, the non-internet of things equipment cannot correctly read the system information aiming at the internet of things equipment because the PDCCH aiming at the internet of things equipment for scheduling the system information is scrambled by the special SI-RNTI, so that the non-internet of things equipment cannot be accessed to a cell deployed by the internet of things equipment.

Having described the method for cell access according to the embodiment of the present application in detail above, an apparatus according to the embodiment of the present application will be described below with reference to fig. 5 to 11, and technical features described in the method embodiment are applicable to the following apparatus embodiments.

Fig. 5 is a schematic block diagram of a terminal device provided in an embodiment of the present application, where the terminal device may be any one of the terminal devices described above, and the terminal device may be, for example, an internet of things device described above. The terminal device 500 of fig. 5 includes a communication unit 510 in which:

a communication unit 510, configured to receive a first physical broadcast channel PBCH, where the first PBCH is a PBCH transmitted by a network device for the internet of things device, and the first PBCH and the second PBCH are different in at least one of the following aspects: a scrambling sequence of PBCH, and a synchronization channel grid for receiving PBCH, where the second PBCH is PBCH sent by the network device for a non-Internet-of-things device.

Optionally, a scrambling sequence s of PBCH _i Is determined according to c (i + m), c (i + m) is a gold sequence, i =0,1, 2.. And a-1, a is the length of a loading sequence of a PBCH, c (i + m) of the first PBCH and c (i + m) of the second PBCH are different, and m is an integer.

Optionally, the value of m in c (i + m) is determined according to v, v is determined according to the second and third least significant bits of a system frame number SFN carried by a PBCH, and v values determined for the second and third least significant bits of the SFN carried by the first PBCH are different from v values determined for the second and third least significant bits of the SFN carried by the second PBCH.

Optionally, the v values determined for the first PBCH are different from the v values determined for the second PBCH for the second and third least significant bits of the same SFN.

Optionally, the scrambling sequence s of the first PBCH _i The minimum value of the adopted v is larger than the scrambling code sequence s of the second PBCH _i The maximum value of the values of v used.

Optionally, the value of c (i + m) is determined based on the following formula:

c(n)＝(x ₁ (n+N _c )+x ₂ (n+N _c ))mod2

x ₁ (n+31)＝(x ₁ (n+3)+x ₁ (n))mod2

x ₂ (n+31)＝(x ₂ (n+3)+x ₂ (n+2)+x ₂ (n+1)+x ₂ (n))mod2

where n = i + m, nc is a fixed value, and x ₁ (0)＝0，x ₁ (n) initial value x ₁ (n)＝1，n＝1，2，...，30，x ₂ (n) has an initial value of C _init ，x ₂ (n) when n is less than or equal to 30, all values are C _init Initial value C adopted by scrambling code sequence of the first PBCH _init Initial value C adopted by scrambling code sequence of the second PBCH _init Different.

Optionally, the scrambling sequence s of the first PBCH _i Using an initial value of C _init Is larger than the scrambling code sequence s of the second PBCH _i Using an initial value of C _init Maximum value of (2).

Optionally, the initial value

Is the identification ID number of the cell, the scrambling code sequence s of the first PBCH _i Using an initial value of C _init Greater than or equal to 1024, scrambling sequence s of said second PBCH _i Initial value C adopted _init Less than or equal to 1023.

Optionally, the scrambling sequence s of the first PBCH _i The adopted value of m is the scrambling code sequence s of the second PBCH _i And increasing the first offset on the basis of the value of the adopted m.

Optionally, the first offset is an integer greater than or equal to 96.

Optionally, a frequency interval is provided between the synchronization channel grid of the first PBCH received by the internet of things device and the synchronization channel grid of the second PBCH received by the non-internet of things device, where the frequency interval is such that a frequency range that can be searched by the non-internet of things device when receiving the second PBCH does not include the synchronization channel grid of the first PBCH received by the internet of things device.

Optionally, the synchronization channel grid of the internet of things device receiving the first PBCH is located in a middle position of two adjacent synchronization channel grids of the non-internet of things device receiving the second PBCH.

Fig. 6 is a schematic block diagram of another terminal device provided in an embodiment of the present application, where the terminal device may be any one of the terminal devices described above, and the terminal device may be, for example, an internet of things device described above. The terminal device 600 of fig. 6 includes a communication unit 610 in which:

a communication unit 610, configured to receive first system information, where the first system information is system information that is sent by a network device for the internet of things device, a system information radio network temporary identifier SI-RNTI of a PDCCH for scrambling and scheduling the first system information is different from an SI-RNTI of a PDCCH for scrambling and scheduling second system information, and the second system information is system information that is sent by the network device for a non-internet of things device.

Fig. 7 is a schematic block diagram of a network device provided in an embodiment of the present application, where the network device may be any of the network devices described above. The network device 700 of fig. 7 comprises a communication unit 710, wherein:

a communication unit 710, configured to transmit a first physical broadcast channel PBCH, where the first PBCH is a PBCH transmitted by the network device for the internet of things device, and the first PBCH and the second PBCH are different in at least one of the following aspects: a scrambling sequence of PBCH, and a synchronization channel grid for sending PBCH, where the second PBCH is PBCH sent by the network device for a non-Internet-of-things device.

Optionally, a scrambling sequence s of PBCH _i Is determined according to c (i + m), c (i + m) is a gold sequence, i =0,1, 2.. And A-1, A is the length of a loading sequence of PBCH, c (i + m) of the first PBCH is different from c (i + m) of the second PBCH, and m is a positive integer.

Optionally, the scrambling sequence s of the first PBCH _i The minimum value of the adopted v is larger than the scrambling code sequence s of the second PBCH _i The maximum value of the values of v is used.

c(n)＝(x ₁ (n+N _c )+x ₂ (n+N _c ))mod2

x ₁ (n+31)＝(x ₁ (n+3)+x ₁ (n))mod2

x ₂ (n+31)＝(x ₂ (n+3)+x ₂ (n+2)+x ₂ (n+1)+x ₂ (n))mod2

where n = i + m, nc is a fixed value, x ₁ (0)＝0，x ₁ Initial value x of (n) ₁ (n)＝1，n＝1，2，...，30，x ₂ (n) has an initial value of C _init ，x ₂ (n) values of C when n is less than or equal to 30 _init Initial value C adopted by scrambling code sequence of the first PBCH _init Initial value C adopted by scrambling code sequence of the second PBCH _init Different.

Optionally, the scrambling sequence s of the first PBCH _i Initial value C adopted _init Is larger than the scrambling code sequence s of the second PBCH _i Using an initial value of C _init Maximum value of (2).

Optionally, the initial value

Is the identification ID number of the cell, the scrambling code sequence s of the first PBCH _i Initial value C adopted _init Greater than or equal to 1024, scrambling sequence s of said second PBCH _i Initial value C adopted _init Less than or equal to 1023.

Optionally, the scrambling sequence s of the first PBCH _i The value of m is the scrambling code sequence s of the second PBCH _i And increasing the first offset on the basis of the value of the adopted m.

Optionally, the first offset is an integer greater than or equal to 96.

Optionally, a frequency interval is provided between the synchronization channel grid of the first PBCH sent by the network device and the synchronization channel grid of the second PBCH sent by the network device, where the frequency interval is such that a frequency range that can be searched by the non-internet-of-things device when receiving the second PBCH does not include the synchronization channel grid of the first PBCH received by the internet-of-things device.

Optionally, the synchronization channel grid on which the network device sends the first PBCH is located in a middle position of two adjacent synchronization channel grids on which the network device sends the second PBCH.

Fig. 8 is a schematic block diagram of another network device provided in an embodiment of the present application, where the network device may be any one of the network devices described above. The network device 800 of fig. 8 includes a communication unit 810, wherein:

a communication unit 810, configured to send first system information, where the first system information is system information sent by a network device for an internet of things device, a system information radio network temporary identifier SI-RNTI of a PDCCH for scrambling and scheduling the first system information is different from an SI-RNTI of a PDCCH for scrambling and scheduling second system information, and the second system information is system information sent by the network device for a non-internet of things device.

Fig. 9 is a schematic structural diagram of a communication device 900 according to an embodiment of the present application. The communication device 900 shown in fig. 9 includes a processor 910, and the processor 910 can call and run a computer program from a memory to implement the method in the embodiment of the present application.

Optionally, as shown in fig. 9, the communication device 900 may also include a memory 920. From the memory 920, the processor 910 can call and run a computer program to implement the method in the embodiment of the present application.

The memory 920 may be a separate device from the processor 910, or may be integrated in the processor 910.

Optionally, as shown in fig. 9, the communication device 900 may further include a transceiver 930, and the processor 910 may control the transceiver 930 to communicate with other devices, and specifically, may transmit information or data to the other devices or receive information or data transmitted by the other devices.

The transceiver 930 may include a transmitter and a receiver, among others. The transceiver 930 may further include antennas, and the number of antennas may be one or more.

Optionally, the communication device 900 may specifically be a network device in this embodiment, and the communication device 900 may implement a corresponding process implemented by the network device in each method in this embodiment, which is not described herein again for brevity.

Optionally, the communication device 900 may specifically be a mobile terminal/terminal device in this embodiment, and the communication device 900 may implement a corresponding flow implemented by the mobile terminal/terminal device in each method in this embodiment, and specifically, the communication device 900 may implement a corresponding flow implemented by the first terminal device and/or the second terminal device in each method in this embodiment, and for brevity, details are not described here again.

Fig. 10 is a schematic structural view of an apparatus of an embodiment of the present application. The apparatus 1000 shown in fig. 10 includes a processor 1010, and the processor 1010 may call and execute a computer program from a memory to implement the method in the embodiment of the present application.

Optionally, as shown in fig. 10, the apparatus 1000 may further include a memory 1020. From the memory 1020, the processor 1010 may call and execute a computer program to implement the method in the embodiment of the present application.

The memory 1020 may be a separate device from the processor 1010 or may be integrated into the processor 1010.

Optionally, the apparatus 1000 may further comprise an input interface 1030. The processor 1010 may control the input interface 1030 to communicate with other devices or apparatuses, and in particular, may obtain information or data transmitted by other devices or apparatuses.

Optionally, the apparatus 1000 may further comprise an output interface 1040. The processor 1010 may control the output interface 1040 to communicate with other devices or apparatuses, and in particular, may output information or data to other devices or apparatuses.

Optionally, the apparatus may be applied to the network device in the embodiment of the present application, and the apparatus may implement the corresponding process implemented by the network device in each method in the embodiment of the present application, and for brevity, details are not described here again.

Optionally, the apparatus may be applied to the mobile terminal/terminal device in the embodiment of the present application, and the apparatus may implement the corresponding process implemented by the mobile terminal/terminal device in each method in the embodiment of the present application, and for brevity, details are not described here again.

It should be understood that the apparatuses mentioned in the embodiments of the present application may be a chip, and the chip may also be referred to as a system on chip, a system on chip or a system on chip.

Fig. 11 is a schematic block diagram of a communication system 1100 provided in an embodiment of the present application. As shown in fig. 11, the communication system 1100 includes a terminal device 1110 and a network device 1120.

The terminal device 1110 may be configured to implement the corresponding function implemented by the terminal device in the foregoing method, and the network device 1120 may be configured to implement the corresponding function implemented by the network device in the foregoing method, which is not described herein again for brevity.

It should be understood that the processor of the embodiments of the present application may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method embodiments may be performed by integrated logic circuits of hardware in a processor or instructions in the form of software. The Processor may be a general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic device, or discrete hardware components. The various methods, steps, and logic blocks disclosed in the embodiments of the present application may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present application may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in a memory, and a processor reads information in the memory and combines hardware thereof to complete the steps of the method.

It will be appreciated that the memory in the embodiments of the subject application can be either volatile memory or nonvolatile memory, or can include both volatile and nonvolatile memory. The non-volatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable PROM (EEPROM), or a flash Memory. The volatile Memory may be a Random Access Memory (RAM) which serves as an external cache. By way of example, and not limitation, many forms of RAM are available, such as Static Random Access Memory (SRAM), dynamic Random Access Memory (DRAM), synchronous Dynamic Random Access Memory (SDRAM), double Data Rate Synchronous Dynamic random access memory (DDR SDRAM), enhanced Synchronous SDRAM (ESDRAM), synchronous Link DRAM (SLDRAM), and Direct Rambus RAM (DRRAM). It should be noted that the memory of the systems and methods described herein is intended to comprise, without being limited to, these and any other suitable types of memory.

It should be understood that the above memories are exemplary but not limiting illustrations, for example, the memories in the embodiments of the present application may also be Static Random Access Memory (SRAM), dynamic random access memory (dynamic RAM, DRAM), synchronous Dynamic Random Access Memory (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (enhanced SDRAM, ESDRAM), synchronous Link DRAM (SLDRAM), direct Rambus RAM (DRRAM), and the like. That is, the memory in the embodiments of the present application is intended to comprise, without being limited to, these and any other suitable types of memory.

The embodiment of the application also provides a computer readable storage medium for storing the computer program.

Optionally, the computer-readable storage medium may be applied to the network device in the embodiment of the present application, and the computer program enables the computer to execute the corresponding process implemented by the network device in each method in the embodiment of the present application, which is not described herein again for brevity.

Optionally, the computer-readable storage medium may be applied to the mobile terminal/terminal device in the embodiment of the present application, and the computer program enables the computer to execute the corresponding process implemented by the mobile terminal/terminal device in each method in the embodiment of the present application, which is not described herein again for brevity.

Embodiments of the present application also provide a computer program product comprising computer program instructions.

Optionally, the computer program product may be applied to the network device in the embodiment of the present application, and the computer program instruction enables the computer to execute a corresponding process implemented by the network device in each method in the embodiment of the present application, which is not described herein again for brevity.

Optionally, the computer program product may be applied to the mobile terminal/terminal device in the embodiment of the present application, and the computer program instructions enable the computer to execute the corresponding processes implemented by the mobile terminal/terminal device in the methods in the embodiment of the present application, which are not described herein again for brevity.

The embodiment of the application also provides a computer program.

Optionally, the computer program may be applied to the network device in the embodiment of the present application, and when the computer program runs on a computer, the computer is enabled to execute a corresponding process implemented by the network device in each method in the embodiment of the present application, and for brevity, details are not described here again.

Optionally, the computer program may be applied to the mobile terminal/terminal device in the embodiment of the present application, and when the computer program runs on a computer, the computer is enabled to execute the corresponding process implemented by the mobile terminal/terminal device in each method in the embodiment of the present application, which is not described herein again for brevity.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed 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 can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.

The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. With regard to such understanding, the technical solutions of the present application may be essentially implemented or contributed to by the prior art, or may be implemented in a software product stored in a storage medium and including instructions for causing a computer device (which may be a personal computer, a server, or a network device) to perform all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A method for cell access, comprising:

the method includes the steps that the equipment of the Internet of things receives a first physical broadcast channel PBCH, wherein the first PBCH is a PBCH sent by the network equipment for the equipment of the Internet of things, and the first PBCH and the second PBCH are different in at least one of the following aspects: a scrambling sequence of PBCH, and a synchronization channel grid for receiving PBCH, where the second PBCH is PBCH sent by the network device for a non-Internet-of-things device;

wherein the PBCH scrambling sequence s _i Is determined according to c (i + m), wherein c (i + m) is a gold sequence, i =0,1,2, \ 8230, A-1, A is the length of a loading sequence of PBCH, c (i + m) of the first PBCH is different from c (i + m) of the second PBCH, and m is an integer.

2. The method of claim 1, wherein the value of m in c (i + m) is determined according to v, wherein v is determined according to second and third least significant bits of a System Frame Number (SFN) carried by a PBCH, and wherein v values determined for the second and third least significant bits of the SFN carried by the first PBCH are different from v values determined for the second and third least significant bits of the SFN carried by the second PBCH.

3. The method of claim 2, wherein the v values determined for the first PBCH are different from the v values determined for the second PBCH for second and third least significant bits of a same SFN.

4. According to claimThe method of claim 3, characterized in that the scrambling sequence s of the first PBCH _i The minimum value of the adopted values of v is larger than the scrambling code sequence s of the second PBCH _i The maximum value of the values of v used.

5. The method of claim 4, wherein the value of c (i + m) is determined based on the following formula:

c(n)＝(x ₁ (n+N _c )+x ₂ (n+N _c ))mod2

x ₁ (n+31)＝(x ₁ (n+3)+x ₁ (n))mod2

x ₂ (n+31)＝(x ₂ (n+3)+x ₂ (n+2)+x ₂ (n+1)+x ₂ (n))mod2

where n = i + m, nc is a fixed value, and x ₁ (0)＝0，x ₁ Initial value x of (n) ₁ (n)＝1，n＝1,2,…,30，x ₂ (n) has an initial value of C _init ，x ₂ (n) when n is less than or equal to 30, all values are C _init Initial value C adopted by scrambling code sequence of the first PBCH _init Initial value C adopted by scrambling code sequence of the second PBCH _init Different.

6. Method according to claim 5, characterized in that the scrambling sequence s of the first PBCH _i Using an initial value of C _init Is larger than the scrambling code sequence s of the second PBCH _i Using an initial value of C _init Maximum value of (2).

7. The method of claim 6, wherein the initial value is set to the initial value

Is the identification ID number of the cell, the scrambling code sequence s of the first PBCH _i Beginning of the applicationInitial value C _init 1024 or more, scrambling sequence s of the second PBCH _i Initial value C adopted _init Less than or equal to 1023.

8. Method according to any of claims 1-7, characterized in that the scrambling sequence s of the first PBCH _i The value of m is the scrambling code sequence s of the second PBCH _i And increasing the first offset on the basis of the value of the adopted m.

9. The method of claim 8, wherein the first offset is an integer greater than or equal to 96.

10. The method of claim 8, wherein a synchronization channel grid of the IOT device receiving the first PBCH and a synchronization channel grid of the non-IOT device receiving the second PBCH have a frequency separation such that a frequency range searchable by the non-IOT device receiving the second PBCH does not include the synchronization channel grid of the IOT device receiving the first PBCH.

11. The method of claim 10, wherein the synchronization channel grid on which the internet of things device receives the first PBCH is located midway between two adjacent synchronization channel grids on which the non-internet of things device receives the second PBCH.

12. A method for cell access, comprising:

the method includes the network device transmitting a first physical broadcast channel, PBCH, the first PBCH being a PBCH transmitted by the network device for internet of things devices, wherein the first PBCH and the second PBCH are different in at least one of: a scrambling sequence of PBCH, and a synchronization channel grid for sending PBCH, where the second PBCH is PBCH sent by the network device for a non-Internet-of-things device;

wherein, the P isScrambling sequence s of BCH _i Is determined according to c (i + m), wherein c (i + m) is a gold sequence, i =0,1,2, \ 8230, A-1, A is the length of a loading sequence of PBCH, c (i + m) of the first PBCH is different from c (i + m) of the second PBCH, and m is a positive integer.

13. The method of claim 12, wherein the value of m in c (i + m) is determined according to v, wherein v is determined according to second and third least significant bits of a System Frame Number (SFN) carried by a PBCH, and wherein v values determined for the second and third least significant bits of the SFN carried by the first PBCH are different from v values determined for the second and third least significant bits of the SFN carried by the second PBCH.

14. The method of claim 13, wherein the v value determined for the first PBCH is different than the v value determined for the second PBCH for second and third least significant bits of a same SFN.

15. Method according to claim 14, characterized in that the scrambling sequence s of the first PBCH _i The minimum value of the adopted v is larger than the scrambling code sequence s of the second PBCH _i The maximum value of the values of v used.

16. The method of claim 15, wherein the value of c (i + m) is determined based on the following equation:

c(n)＝(x ₁ (n+N _c )+x ₂ (n+N _c ))mod2

x ₁ (n+31)＝(x ₁ (n+3)+x ₁ (n))mod2

x ₂ (n+31)＝(x ₂ (n+3)+x ₂ (n+2)+x ₂ (n+1)+x ₂ (n))mod2

17. Method according to claim 16, characterized in that the scrambling sequence s of the first PBCH is _i Using an initial value of C _init Is larger than the scrambling code sequence s of the second PBCH _i Using an initial value of C _init Maximum value of (2).

18. The method of claim 17, wherein the initial value is set to the initial value

Is the identification ID number of the cell, the scrambling code sequence s of the first PBCH _i Initial value C adopted _init 1024 or more, scrambling sequence s of the second PBCH _i Using an initial value of C _init Less than or equal to 1023.

19. Method according to any of claims 12-18, characterized in that the scrambling sequence s of the first PBCH _i The value of m is the scrambling code sequence s of the second PBCH _i And increasing the first offset on the basis of the value of the adopted m.

20. The method of claim 19, wherein the first offset is an integer greater than or equal to 96.

21. The method of claim 19, wherein a synchronization channel grid of the first PBCH transmitted by the network device is separated from a synchronization channel grid of the second PBCH transmitted by the network device by a frequency separation such that a frequency range searchable by the non-Internet of things devices when receiving the second PBCH does not include the synchronization channel grid of the first PBCH received by the Internet of things devices.

22. The method of claim 21, wherein a synchronization channel grid on which the network device transmits the first PBCH is located midway between two adjacent synchronization channel grids on which the network device transmits the second PBCH.

23. The utility model provides a terminal equipment, its characterized in that, terminal equipment is thing networking device, includes:

a communication unit, configured to receive a first physical broadcast channel PBCH, where the first PBCH is a PBCH transmitted by a network device for the internet of things device, and the first PBCH and the second PBCH are different in at least one of the following aspects: a scrambling sequence of a PBCH, and a synchronization channel grid for receiving the PBCH, wherein the second PBCH is the PBCH sent by the network equipment for non-Internet-of-things equipment;

24. The terminal device of claim 23, wherein the value of m in c (i + m) is determined according to v, wherein v is determined according to second and third least significant bits of a System Frame Number (SFN) carried by a PBCH, and wherein v values determined for the second and third least significant bits of the SFN carried by the first PBCH are different from v values determined for the second and third least significant bits of the SFN carried by the second PBCH.

25. The terminal device of claim 24, wherein the v value determined for the first PBCH is different than the v value determined for the second PBCH for second and third least significant bits of a same SFN.

26. Terminal device according to claim 25, wherein the scrambling sequence s of the first PBCH is _i The minimum value of the adopted values of v is larger than the scrambling code sequence s of the second PBCH _i The maximum value of the values of v used.

27. The terminal device of claim 26, wherein the value of c (i + m) is determined based on the following formula:

c(n)＝(x ₁ (n+N _c )+x ₂ (n+N _c ))mod2

x ₁ (n+31)＝(x ₁ (n+3)+x ₁ (n))mod2

x ₂ (n+31)＝(x ₂ (n+3)+x ₂ (n+2)+x ₂ (n+1)+x ₂ (n))mod2

where n = i + m, nc is a fixed value, and x ₁ (0)＝0，x ₁ (n) initial value x ₁ (n)＝1，n＝1,2,…,30，x ₂ (n) has an initial value of C _init ，x ₂ (n) when n is less than or equal to 30, all values are C _init Initial value C adopted by scrambling code sequence of the first PBCH _init Initial value C adopted by scrambling code sequence of the second PBCH _init Different.

28. Terminal device according to claim 27, wherein the scrambling sequence s of the first PBCH is _i Using an initial value of C _init Is larger than the scrambling code sequence s of the second PBCH _i Using an initial value of C _init Of (2) is calculated.

29. The terminal device of claim 28, wherein the initial value is set to

Is the identification ID number of the cell, the scrambling code sequence s of the first PBCH _i Using an initial value of C _init 1024 or more, scrambling sequence s of the second PBCH _i Initial value C adopted _init 1023 or less.

30. Terminal device according to any of claims 23-29, wherein the scrambling sequence s of the first PBCH is characterized by _i The adopted value of m is the scrambling code sequence s of the second PBCH _i And increasing the first offset on the basis of the value of the adopted m.

31. The terminal device of claim 30, wherein the first offset is an integer greater than or equal to 96.

32. The terminal device of claim 30, wherein a frequency separation is provided between the synchronization channel grid for the internet of things device to receive the first PBCH and the synchronization channel grid for the non-internet of things device to receive the second PBCH, wherein the frequency separation is such that a frequency range that the non-internet of things device can search to receive the second PBCH does not include the synchronization channel grid for the internet of things device to receive the first PBCH.

33. The terminal device of claim 32, wherein a synchronization channel grid on which the internet of things device receives the first PBCH is located midway between two adjacent synchronization channel grids on which the non-internet of things device receives the second PBCH.

34. A network device, comprising:

a communication unit, configured to send a first physical broadcast channel PBCH, where the first PBCH is a PBCH sent by the network device for an internet of things device, and the first PBCH is sent by the network device for the internet of things deviceThe PBCH and the second PBCH are different in at least one of the following aspects: a scrambling sequence of PBCH, and a synchronization channel grid for sending PBCH, where the second PBCH is PBCH sent by the network device for a non-Internet-of-things device; wherein the PBCH scrambling sequence s _i Is determined according to c (i + m), wherein c (i + m) is a gold sequence, i =0,1,2, \ 8230, A-1, A is the length of a loading sequence of PBCH, c (i + m) of the first PBCH is different from c (i + m) of the second PBCH, and m is a positive integer.

35. The network device of claim 34, wherein the value of m in c (i + m) is determined according to v, wherein v is determined according to second and third least significant bits of a System Frame Number (SFN) carried by a PBCH, and wherein v values determined for the second and third least significant bits of the SFN carried by the first PBCH are different from v values determined for the second and third least significant bits of the SFN carried by the second PBCH.

36. The network device of claim 35, wherein the v value determined for the first PBCH is different than the v value determined for the second PBCH for second and third least significant bits of a same SFN.

37. The network device of claim 36, wherein the scrambling sequence s of the first PBCH is _i The minimum value of the adopted values of v is larger than the scrambling code sequence s of the second PBCH _i The maximum value of the values of v used.

38. The network device of claim 37, wherein the value of c (i + m) is determined based on the following formula:

c(n)＝(x ₁ (n+N _c )+x ₂ (n+N _c ))mod2

x ₁ (n+31)＝(x ₁ (n+3)+x ₁ (n))mod2

x ₂ (n+31)＝(x ₂ (n+3)+x ₂ (n+2)+x ₂ (n+1)+x ₂ (n))mod2

39. The network device of claim 38, wherein the scrambling sequence s of the first PBCH _i Using an initial value of C _init Is larger than the scrambling code sequence s of the second PBCH _i Using an initial value of C _init Maximum value of (2).

40. The network device of claim 39, wherein the initial value is set

Is the identification ID number of the cell, the scrambling code sequence s of the first PBCH _i Using an initial value of C _init Greater than or equal to 1024, scrambling sequence s of said second PBCH _i Using an initial value of C _init Less than or equal to 1023.

41. The network device of any of claims 34-40, wherein a scrambling sequence s of the first PBCH _i The value of m is the scrambling code sequence s of the second PBCH _i And increasing the first offset on the basis of the value of the adopted m.

42. The network device of claim 41, wherein the first offset is an integer greater than or equal to 96.

43. The network device of claim 42, wherein a synchronization channel grid of the first PBCH sent by the network device is separated from a synchronization channel grid of the second PBCH sent by the network device by a frequency separation such that a frequency range searchable by the non-Internet-of-things devices when receiving the second PBCH does not include a synchronization channel grid of the first PBCH received by the Internet-of-things devices.

44. The network device of claim 43, wherein a synchronization channel grid on which the network device sends the first PBCH is located midway between two adjacent synchronization channel grids on which the network device sends the second PBCH.

45. A terminal device, characterized in that the terminal device comprises a processor and a memory for storing a computer program, the processor being adapted to invoke and execute the computer program stored in the memory to perform the method of any of claims 1 to 11.

46. A network device comprising a processor and a memory, the memory for storing a computer program, the processor for invoking and executing the computer program stored in the memory to perform the method of any of claims 12-22.

47. A communications apparatus, comprising a processor configured to invoke and execute a computer program from a memory, so that a device on which the communications apparatus is installed performs the method of any one of claims 1 to 11.

48. A communications apparatus, comprising a processor configured to invoke and execute a computer program from a memory, so that a device on which the communications apparatus is installed performs the method of any of claims 12 to 22.

49. A computer-readable storage medium for storing a computer program which causes a computer to perform the method of any one of claims 1 to 11.

50. A computer-readable storage medium for storing a computer program which causes a computer to perform the method of any one of claims 12 to 22.

51. A communication system comprising a terminal device according to any of claims 23 to 33.

52. A communication system comprising a network device according to any one of claims 34 to 44.