CN115943719A

CN115943719A - Information transmission method, device, communication equipment and storage medium

Info

Publication number: CN115943719A
Application number: CN202180001252.4A
Authority: CN
Inventors: 刘洋
Original assignee: Beijing Xiaomi Mobile Software Co Ltd
Current assignee: Beijing Xiaomi Mobile Software Co Ltd
Priority date: 2021-04-26
Filing date: 2021-04-26
Publication date: 2023-04-07
Also published as: WO2022226739A1

Abstract

The disclosed embodiments relate to an information transmission method, an apparatus, a communication device, and a storage medium, where an access network device transmits a Synchronization Signal Block (SSB) at M first-class candidate positions of a first time domain range of a half frame, where the half frame includes the first time domain range and a second time domain range, where the second time domain range has N second-class candidate positions, where the second-class candidate positions are used to transmit the SSB that is not transmitted at the first-class candidate positions, where M is less than or equal to 32, M is less than or equal to N, and M and N are both positive integers.

Description

Information transmission method, device, communication equipment and storage medium

Technical Field

The present application relates to the field of wireless communications technologies, but not limited to the field of wireless communications technologies, and in particular, to an information transmission method, an apparatus, a communication device, and a storage medium.

Background

The fifth generation (5G, 5) ^th Generation) cellular mobile communication working frequency band interval covers 52.6 GHz-71 GHz, and the working frequency band adopts sub-bandsThe carrier spacing (SCS) will be up to 960kHz, i.e. maximum up to 960k for data transmission, other optional values are 480k, 240, 120 and 60kHz, etc. In the case of the 5G FR2 (7.126 GHz-52.6 GHz), two types of 120/60kHz are adopted for data transmission, and two types of 240/120 are adopted for a Synchronous Signal Block (SSB). While for 52.6 to 71GHz, a larger one should be used, but also supporting 120kHz.

Disclosure of Invention

In view of this, the disclosed embodiments provide an information transmission method, apparatus, communication device and storage medium.

According to a first aspect of the embodiments of the present disclosure, there is provided an information transmission method, where the method is performed by an access network device, and the method includes:

transmitting SSBs at M first-class candidate positions of a first time domain range of a half frame, wherein the half frame comprises the first time domain range and a second time domain range, wherein N second-class candidate positions are in the second time domain range, the second-class candidate positions are used for transmitting the SSBs which are not transmitted at the first-class candidate positions, M is smaller than or equal to 32, M is smaller than or equal to N, and both M and N are positive integers.

According to a second aspect of the embodiments of the present disclosure, there is provided an information transmission method, where the method is performed by a user equipment UE, and the method includes:

receiving SSBs at M first-class candidate positions of a first time domain range of a half frame, wherein the half frame comprises the first time domain range and a second time domain range, wherein N second-class candidate positions are in the second time domain range, wherein the second-class candidate positions are used for transmitting the SSBs which are not transmitted at the first-class candidate positions, M is less than or equal to 32, M is less than or equal to N, and both M and N are positive integers.

According to a third aspect of the embodiments of the present disclosure, there is provided an information transmission apparatus, wherein the apparatus includes: a first sending module, wherein,

the first sending module is configured to send an SSB at M first class candidate positions in a first time domain range of a half frame, where the half frame includes the first time domain range and a second time domain range, where the second time domain range has N second class candidate positions, where the second class candidate positions are used to send the SSB that is not sent at the first class candidate positions, where M is less than or equal to 32, and M is less than or equal to N, where M and N are both positive integers.

According to a fourth aspect of the embodiments of the present disclosure, there is provided an information transmission apparatus, wherein the apparatus includes: a first receiving module, wherein,

the first receiving module is configured to receive SSBs at M first class candidate positions in a first time domain range of a half frame, where the half frame includes the first time domain range and a second time domain range, where the second time domain range has N second class candidate positions, where the second class candidate positions are used to transmit the SSBs that are not transmitted at the first class candidate positions, where M is less than or equal to 32, and M is less than or equal to N, where M and N are both positive integers.

The embodiment of the disclosure provides an information transmission method, an information transmission device, communication equipment and a storage medium. The access network equipment transmits SSBs at M first-class candidate positions of a first time domain range of a half frame, wherein the half frame comprises the first time domain range and a second time domain range, the second time domain range has N second-class candidate positions, the second-class candidate positions are used for transmitting the SSBs which are not transmitted at the first-class candidate positions, M is less than or equal to 32, M is less than or equal to N, and both M and N are positive integers. Thus, for the situation of 120kHz SCS Case D, the SSB that is not successfully transmitted at the first type candidate location is transmitted at the second type candidate location within a half frame, so that the SSB that is not successfully transmitted can be retransmitted, the opportunity of transmitting the SSB by the access network device is increased, the opportunity of receiving the SSB by the UE is increased, and the reliability of transmitting the SSB by the base station is improved.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of embodiments of the disclosure.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the embodiments.

Fig. 1 is a block diagram illustrating a wireless communication system in accordance with an exemplary embodiment;

FIG. 2 is a flow diagram illustrating a method of information transmission according to an example embodiment;

FIG. 3 is a flow diagram illustrating another method of information transmission according to an example embodiment;

FIG. 4 is a block diagram illustrating an information transfer device in accordance with an exemplary embodiment;

FIG. 5 is a block diagram illustrating another information transfer device in accordance with an exemplary embodiment;

fig. 6 is a block diagram illustrating an apparatus for information transfer in accordance with an example embodiment.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with embodiments of the invention. Rather, they are merely examples of apparatus and methods consistent with certain aspects of embodiments of the invention, as detailed in the following claims.

The terminology used in the embodiments of the present disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the embodiments of the present disclosure. As used in the disclosed embodiments and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

It is to be understood that although the terms first, second, third, etc. may be used herein to describe various information in the embodiments of the present disclosure, such information should not be limited by these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of embodiments of the present disclosure. The word "if," as used herein, may be interpreted as "at … …" or "at … …" or "in response to a determination," depending on the context.

Referring to fig. 1, a schematic structural diagram of a wireless communication system according to an embodiment of the disclosure is shown. As shown in fig. 1, the wireless communication system is a communication system based on a cellular mobile communication technology, and may include: several terminals 11 and several base stations 12.

Terminal 11 may refer to, among other things, a device that provides voice and/or data connectivity to a user. The terminal 11 may communicate with one or more core networks via a Radio Access Network (RAN), and the terminal 11 may be an internet of things terminal, such as a sensor device, a mobile phone (or called "cellular" phone), and a computer having the internet of things terminal, and may be a fixed, portable, pocket, handheld, computer-embedded, or vehicle-mounted device, for example. For example, a Station (Station), a subscriber unit (subscriber unit), a subscriber Station (subscriber Station), a mobile Station (mobile), a remote Station (remote Station), an access point (ap), a remote terminal (remote), an access terminal (access terminal), a user equipment (user terminal), a user agent (user agent), a user equipment (user device), or a user terminal (UE). Alternatively, the terminal 11 may be a device of an unmanned aerial vehicle. Alternatively, the terminal 11 may also be a vehicle-mounted device, for example, a vehicle computer with a wireless communication function, or a wireless communication device externally connected to the vehicle computer. Alternatively, the terminal 11 may be a roadside device, for example, a street lamp, a signal lamp or other roadside device having a wireless communication function.

The base station 12 may be a network side device in a wireless communication system. The wireless communication system may be the fourth generation mobile communication (4 g) system, which is also called Long Term Evolution (LTE) system; alternatively, the wireless communication system may also be a 5G system, which is also called a New Radio (NR) system or a 5G NR system. Alternatively, the wireless communication system may be a next-generation system of a 5G system. Among them, the Access Network in the 5G system may be referred to as NG-RAN (New Generation-Radio Access Network, new Generation Radio Access Network). Alternatively, an MTC system.

The base station 12 may be an evolved node b (eNB) used in a 4G system. Alternatively, the base station 12 may be a base station (gNB) adopting a centralized distributed architecture in the 5G system. When the base station 12 adopts a centralized distributed architecture, it generally includes a Centralized Unit (CU) and at least two Distributed Units (DU). A Packet Data Convergence Protocol (PDCP) layer, a Radio Link layer Control Protocol (RLC) layer, and a Media Access Control (MAC) layer are provided in the central unit; a Physical (PHY) layer protocol stack is disposed in the distribution unit, and the embodiment of the present disclosure does not limit the specific implementation manner of the base station 12.

The base station 12 and the terminal 11 may establish a radio connection over the air. In various embodiments, the wireless air interface is based on a fourth generation mobile communication network technology (4G) standard; or the wireless air interface is based on a fifth generation mobile communication network technology (5G) standard, for example, the wireless air interface is a new air interface; alternatively, the wireless air interface may be a wireless air interface based on a 5G next generation mobile communication network technology standard.

In some embodiments, an E2E (End to End) connection may also be established between the terminals 11. Such as a vehicle to vehicle (V2V) communication, a vehicle to Infrastructure (V2I) communication, and a vehicle to peer (V2P) communication in a vehicle to internet communication (V2X).

In some embodiments, the wireless communication system may further include a network management device 13.

Several base stations 12 are connected to a network management device 13, respectively. The network Management device 13 may be a Core network device in a wireless communication system, for example, the network Management device 13 may be a Mobility Management Entity (MME) in an Evolved Packet Core (EPC). Alternatively, the Network management device may also be other core Network devices, such as a Serving GateWay (SGW), a Public Data Network GateWay (PGW), a Policy and Charging Rules Function (PCRF), or a Home Subscriber Server (HSS), for example. The implementation form of the network management device 13 is not limited in the embodiment of the present disclosure.

The execution subject that this disclosed embodiment relates to includes but not limited to: user Equipment (UE) such as a mobile phone terminal and access network Equipment such as a base station, which perform wireless communication using a cellular mobile communication network technology.

One application scenario of the embodiments of the present disclosure is that, in NR, a Primary Synchronization Signal (PSS), a Secondary Synchronization Signal (SSS), and a Physical Broadcast Channel (PBCH) are referred to as a Synchronization Signal/Broadcast Signal block (SS/PBCH block). For convenience of description, the present embodiment refers to SS/PBCH block as SSB.

The 5G cellular mobile communication system allows the use of NR unlicensed technology, i.e. the use of NR technology for communication over unlicensed spectrum. For the NRU, an SSB Candidate Position (Candidate Position) concept is introduced, and in an SSB transmission half frame in each SSB period, there may be multiple SSB Candidate positions, which may be time-domain positions where the access network device may transmit SSBs.

To support beam scanning, SSBs are organized into a series of bursts (bursts) and transmitted periodically. The SSBs sent in each SSB period constitute a Burst, and the SSBs may be numbered in ascending order starting from 0. The number of SSBs in a Burst may be the same as the number of beams used by the base station, and each SSB in a Burst is transmitted using a different beam.

In the Case of 120kHz SCS, 64 SSB candidate locations of Case D type already occupy the whole half frame, and if one or more SSBs cannot be transmitted due to LBT failure of the base station, the base station cannot transmit the non-transmitted SSBs in the SSB period of the half frame, and the UE cannot receive the SSBs in the coverage of one or more beams.

Therefore, how to improve the reliability of SSB transmission in the 120kHz SCS situation is a problem to be solved.

As shown in fig. 2, the present exemplary embodiment provides an information transmission method, which may be applied to an access network device for wireless communication, and includes:

step 201: transmitting SSBs at M first-class candidate positions of a first time domain range of a half frame, wherein the half frame comprises the first time domain range and a second time domain range, wherein N second-class candidate positions are in the second time domain range, the second-class candidate positions are used for transmitting the SSBs which are not transmitted at the first-class candidate positions, M is smaller than or equal to 32, M is smaller than or equal to N, and both M and N are positive integers.

Here, the access network device may include a base station or the like. The duration of one field may be 5ms, one field may include a first time domain range and a second time domain range, the first time domain range may precede the second time domain range, and the first time domain range and the second time domain range may not have a repetition range. For example, the first time domain range is the first 2.5ms of the field and the second time domain range is the second 2.5ms of the field. Here, the half frame may be a half radio frame.

Under different SCS, the maximum number of SSBs that can be sent per half-frame is different, i.e., the number of SSB candidate locations within a half-frame is different. As shown, one field can have 64 SSB candidate locations at 120kHz SCS at maximum. The method provided by the embodiment can be applied to, but is not limited to, SSB SCS condition of 120kHz. The different SCS includes: 15kHz, 30kHz, 120kHz, 240kHz, 480kHz and the like.

The first category of candidate locations of the first time domain range are used for normally transmitting SSBs. Each first-type candidate location may correspond to at least one second-type candidate location within a second time-domain range.

Optionally, the second type candidate location may be at least used for sending an SSB that was not successfully sent at the associated first type candidate location.

Illustratively, at 120kHz SCS, a half-frame may have a maximum of 32 candidate locations of the first type, and 32 candidate locations of the second type.

In one embodiment, the second type of candidate location is used to send the SSBs that were not sent in the first type of candidate location due to channel sounding failure.

Optionally, the unsuccessful SSB is not sent due to LBT failure of the access network device. When the unlicensed frequency band is used for communication, the base station can monitor the channel before sending the SSB, and if the monitored channel is idle, the SSB is sent at the first-class candidate position. And if the channel is monitored to be occupied, the SSB is not sent at the first-class candidate position. The unsent SSB may be sent at a second type of candidate location associated with the first type of candidate location.

In the case of 120kHz SCS, a half frame may have 64 candidate locations in total, and a first class candidate location has an associated second class candidate location, so that at most 32 first class candidate locations may be set, and 32 second class candidate locations may be set corresponding to 32 first class candidate locations. By analogy, when 16 first-type candidate positions are set, at least 16 second-type candidate positions may be set, and the like.

Alternatively, the number M of candidate positions in the first category may be 32, 16, 8, or the like. Correspondingly, the number N of candidate positions in the second category may be selected from 32, 16, 8, and the like. Thus, a candidate location of the first type can be associated with a candidate location of the second type, so that an SSB has a retransmission opportunity, thereby improving the reliability of SSB transmission.

Optionally, in response to the number M of the first-class candidate locations selecting 16 or 8, the number N of the second-class candidate locations may select 32 or 16, and thus, one first-class candidate location may be associated with two second-class candidate locations, so that one SSB has two retransmission opportunities, thereby improving SSB transmission reliability.

In one embodiment, the method further comprises:

and sending the SSB which is not sent by the first class candidate position associated with the second class candidate position at the second class candidate position.

When the access network device may send the SSB at a first type of candidate location in a first time domain range. If the access network equipment does not send the SSB at one or more first-class candidate positions in the first time domain range due to LBT failure and the like. The unsent SSBs may be transmitted at one or more candidate locations of a second type in a second time domain.

The UE may receive the normally transmitted SSB at the first type of candidate location. If there are SSBs that are not received at the first type of candidate location, the UE may receive SSBs again at the second type of candidate location associated with the first type of candidate location.

Optionally, the first-class candidate position is associated with the second-class candidate position, and the number of bits of the first-class candidate position in the first time domain range may be the same as the number of bits of the second-class candidate position in the second time domain range. For example, a first candidate location of a first type in a first time domain range is associated with a first candidate location of a second type in a second time domain range. Or, when one first-class candidate position is associated with a plurality of second-class candidate positions, the M first-class candidate positions may be divided into one group, and for one group of M first-class candidate positions, there are a plurality of groups of M second-class candidate positions in the second time domain, and positions of second-class candidate positions corresponding to the first-class candidate positions in the group are the same.

Thus, for the situation of 120kHz SCS Case D, the SSB that is not successfully transmitted at the first type candidate location is transmitted at the second type candidate location within a half frame, so that the SSB that is not successfully transmitted can be retransmitted, the opportunity of transmitting the SSB by the access network device is increased, the opportunity of receiving the SSB by the UE is increased, and the reliability of transmitting the SSB by the base station is improved.

In one embodiment, in response to the duration of the second time domain range being i times the duration of the first time domain range, N is i times M, where i is a positive integer greater than or equal to 1.

Optionally, the duration of the second time domain range may be equal to the duration of the first time domain range, and thus, the first type candidate position of the first time domain range may be associated with the first second type candidate position of the second time domain range.

Optionally, the duration of the second time domain range may be an integer multiple i of the duration of the first time domain range. M first class candidate locations may be determined as one first class candidate location group, for which there are i second class candidate location groups in the second time domain. A first class of candidate locations has an associated second class of candidate locations within i second class of candidate location groups of the second time domain range, respectively. That is, when a successful SSB is not transmitted in a first-class candidate location, any one of the second-class candidate locations associated in the i second-class candidate location packets may be selected for retransmission.

Here, the position of the second-class candidate position corresponding to one first-class candidate position within the packet may be the same. For example: and if the certain first-class candidate position is located at the j-th position of the first-class candidate position packet, the j-th positions in the i second-class candidate position packets are all second-class candidate positions associated with the first-class candidate position.

Thus, one first-class candidate position in the first time domain range can be associated with i second-class candidate positions in the second time domain range, so that the reliability of the SSB sent by the base station is improved.

Optionally, the duration of the first time domain range, the duration of the second time domain range, and/or the duration of the second time domain range is a multiple i of the duration of the first time domain range, and may be agreed by a communication protocol, agreed by the base station and the UE, or determined by the base station and indicated to the UE through the indication information.

In one embodiment, the method further comprises:

and sending first indication information indicating the second type candidate position.

The information indicated by the first indication information may include, but is not limited to: the number of the second type candidate positions, and/or the specific position of the second type candidate position in the second time domain range, and/or the number of the second type candidate positions corresponding to one first type candidate position, and the like.

Here, the number of second type candidate locations corresponding to a first type candidate location may be used for the UE to determine the number of second type candidate locations for transmitting an unsuccessful SSB. For example, if a first type of candidate location corresponds to two second type of candidate locations, then an unsuccessfully transmitted SSB may be retransmitted at both second type of candidate locations.

The UE may determine, based on the first indication information, the number of the second-class candidate positions, and/or the specific position of the second-class candidate position in the second time domain range, and then receive, at the second-class candidate position, the SSB that is not successfully sent at the associated first-class candidate position. One candidate location of the first type may have an association with one or more candidate locations of the second type. The association relationship between the first type candidate position and the second type candidate position may include, but is not limited to: and the corresponding relation of the bit order of the grouping formed at the first-class candidate position and the grouping formed at the second-class candidate position. For example, a first class of candidate locations has the same number of bits within a packet as an associated second class of candidate locations.

For example, the second type candidate position corresponding to one first type candidate position may have the same number of bits in the corresponding group. For example: and if the certain first-class candidate position is located at the jth bit of the first-class candidate position group, the jth bit in one or more groups of the second-class candidate positions is the second-class candidate position associated with the first-class candidate position.

In one embodiment, the sending the first indication information indicating the second type of candidate location includes:

and sending PBCH information carrying the first indication information, wherein the first indication information is used for indicating the second type candidate position number N.

Here, the first indication information may be carried by PBCH information. The PBCH information may indicate the second type candidate position number N with 1 or more bits.

Illustratively, one bit may be used to indicate N, e.g., with "1" indicating 32 second-class candidate locations and "0" indicating 16 second-class candidate locations. Two-bit indication M may also be used, e.g. with "11" there are 32 second type candidate positions, with "10" there are 16 second type candidate positions, with "01" there are 8 second type candidate positions, with "00" there are 4 second type candidate positions, etc.

and sending SSB sending indication information carrying the first indication information, wherein the SSB sending indication information also carries second indication information, and the second indication information is used for indicating the SSB sent at the first type candidate position.

The second indication information of the SSB transmission indication information may be used to indicate a transmission status of the SSB actually transmitted at the first-class candidate location. The SSB transmission indication information may occupy 16 bits.

For example, the SSB transmitted by the first type candidate location may be an information element in SIB1 indicating the SSB actually transmitted at the first type candidate location. In the related art, the information element in SIB1 indicating the SSBs actually transmitted in the first-class candidate location has 16 bits, and each of the 16 bits is used to indicate the transmission status of the SSBs actually transmitted in the first-class candidate location, and may indicate the transmission status of 64 SSBs in total.

Here, since M is less than or equal to 32, the SSB transmission indication information with 16 bits may have redundant bits in indicating the transmission status of 32 SSBs, and the redundant bits may be used to carry the first indication information. For example, 1 or more bits of redundancy are used to indicate the number N of candidate positions of the second type.

In one embodiment, the second indication information includes:

first sub-indication information for indicating that an SSB packet of the SSB is transmitted at the first class candidate location;

second sub-indication information for indicating the SSBs sent within each of the SSB packets.

For example, in the related art, the SSB sending indication information may occupy 16 bits for indicating the sending status of 64 SSBs, and 64 SSBs may be divided into 8 SSB groups, where 8 SSBs in each SSB group are provided, the first 8 bits of the 16 bits are the first sub-indication information, and the SSB group that sends the SSBs may be indicated in a bitmap (bitmap) manner; the last 8 bits are second sub-indication information, and the SSB sent in one group is indicated by using a bitmap (bitmap) manner.

Here, since M is less than or equal to 32, in the case of 8 SSBs per SSB group as well, the first sub indication information only needs 4 bits to indicate the SSB group that transmits the SSB. The remaining 4 bits may thus carry first indication information for indicating the second class of candidate positions.

In one embodiment, the first indication information is used for indicating the number of the second type of candidate positions associated with one first type of candidate position.

The first indication information may be used to indicate the number of second type candidate positions associated with one first type candidate position, for example, may indicate the number of 1 or more second type candidate positions associated with one first type candidate position.

Illustratively, the first indication information occupies 4 bits. The first indication information may indicate a likelihood of how many candidate locations of the second type the first type of candidate location may be associated with. If there are 16 first class candidate locations, then there may be 16 × 3 second class candidate locations in the remaining time domain, i.e. one first class candidate location is associated with 3 second class candidate locations, since there may be a maximum of 64 candidate locations in the field. At this time, a third bit position "1" of the 4 bits may be associated with 3 second-class candidate positions indicating one first-class candidate position

If there are 32 first class candidate locations, there may be 32 × 1 second class candidate locations in the remaining time domain, i.e. one first class candidate location is associated with one second class candidate location. At this time, a 4th bit position "1" of the 4 bits may indicate that one first-class candidate position is associated with 1 second-class candidate position.

In this way, the UE can determine the number of the second-class candidate positions by explicitly indicating the number of the second-class candidate positions associated with one first-class candidate position by the first indication information, and then receive the unsuccessfully transmitted SSB by using the second-class candidate positions. The situation that in the related art, after SSB is not successfully transmitted, the SSB cannot be received in the same period for 120kHz SCS is reduced. And the reliability of SSB sending and receiving is enhanced.

In one embodiment, the method further comprises:

and in response to determining that the index value of the beam on which the UE is positioned is greater than or equal to 32, determining that the half frame does not have the second type of candidate position.

Since there are no more than 32 first-class candidate positions within a half frame, when the base station transmits a signal by beam scanning and one SSB is transmitted by one beam, the SSB can be transmitted within 32 beams at most, that is, the index of the SSB is from 0 to 31.

If the base station needs to transmit the SSB in more than 32 beams, for example, the SSB is transmitted in 64 beams, 64 first-type candidate positions are needed, and thus the second-type candidate position cannot be set in the half frame.

The beam index value may correspond to the SSB index, and when the UE determines that the UE is in the beam coverage range with the index value greater than or equal to 32, it may be determined that the base station needs to transmit the SSB in more than 32 beams, so that the second type of candidate position cannot be set within the half frame. Therefore, if the UE does not receive the SSB in this period, e.g., the base station does not send the SSB due to SSB LBT failure, the UE may determine that the SSB is not received in this period.

In one embodiment, the method further comprises:

determining that there is no candidate location of the second type within the field in response to the received index of the SSB being greater than or equal to 32.

When the UE receives an Index of SSB greater than or equal to 32, the UE may determine that the base station does not configure the second type of candidate location. In this case, if the UE does not receive the SSB in this period, e.g., the base station does not send the SSB due to SSB LBT failure, the UE may determine that the SSB is not received in this period.

As shown in fig. 3, the present exemplary embodiment provides an information transmission method, which may be applied to a UE in wireless communication, the method including:

step 301: receiving SSBs at M first-class candidate positions of a first time domain range of a half frame, wherein the half frame comprises the first time domain range and a second time domain range, wherein N second-class candidate positions are in the second time domain range, wherein the second-class candidate positions are used for transmitting the SSBs which are not transmitted at the first-class candidate positions, M is less than or equal to 32, M is less than or equal to N, and both M and N are positive integers.

Under different SCS, the maximum number of SSBs that can be sent per half-frame is different, i.e., the number of SSB candidate locations within a half-frame is different. Illustratively, at 120kHz SCS, a half-frame may have 64 SSB candidate locations at maximum. The method provided by the embodiment can be applied to, but is not limited to, SSB SCS condition of 120kHz. The different SCS's include: 15kHz, 30kHz, 120kHz, 240kHz, 480kHz and the like.

Optionally, the second type candidate location may be used at least for transmitting an SSB that was not successfully transmitted at the associated first type candidate location.

Optionally, the unsent SSB may be an unsent SSB due to an LBT failure of the access network device. When the unlicensed frequency band is used for communication, the base station can monitor the channel before sending the SSB, and if the monitored channel is idle, the SSB is sent at the first-class candidate position. And if the channel is monitored to be occupied, the SSB is not sent at the first-class candidate position. The unsent SSB may be sent at a second type of candidate location associated with the first type of candidate location.

In the case of 120kHz SCS, a half frame may have 64 candidate locations in total, and a first class candidate location has an associated second class candidate location, so that at most 32 first class candidate locations may be set, and 32 second class candidate locations may be set corresponding to 32 first class candidate locations. By analogy, when 16 first-type candidate positions are set, at least 16 second-type candidate positions may be set, and so on.

Alternatively, the number M of candidate positions in the first category may be 32, 16, 8, or the like. Correspondingly, the number N of candidate positions in the second category may be selected from 32, 16, 8, and the like. Thus, a candidate location of the first type can be associated with a candidate location of the second type, so that an SSB has a retransmission opportunity, thereby improving the SSB transmission reliability.

In one embodiment, the method further comprises:

receiving, at the second type of candidate location, the SSB not sent at the first type of candidate location associated with the second type of candidate location.

Optionally, the first class candidate position is associated with the second class candidate position, and the bit number of the first class candidate position in the first time domain range may be the same as the bit number of the second class candidate position in the second time domain range. For example, a first candidate location of a first type in a first time domain range is associated with a first candidate location of a second type in a second time domain range. Or, when one first-class candidate position is associated with a plurality of second-class candidate positions, the M first-class candidate positions may be divided into one group, and for one group of M first-class candidate positions, there are a plurality of groups of M second-class candidate positions in the second time domain, and positions of second-class candidate positions corresponding to the first-class candidate positions in the group are the same.

Optionally, the duration of the second time domain range may be an integer multiple i of the duration of the first time domain range. M first class candidate locations may be determined as one first class candidate location group for which there are i second class candidate location groups in the second time domain. A first class of candidate locations has an associated second class of candidate locations within i second class of candidate location groups of the second time domain range, respectively. That is, when a successful SSB is not transmitted in one first-class candidate location, any one of the associated second-class candidate locations in the i second-class candidate location packets may be selected for retransmission.

Thus, one first-class candidate position in the first time domain range can be associated with i second-class candidate positions in the second time domain range, and the reliability of the base station for sending the SSB is improved.

Optionally, the duration of the first time domain range, the duration of the second time domain range, and/or the duration of the second time domain range is a multiple i of the duration of the first time domain range, and may be defined by a communication protocol, agreed by the base station and the UE, or determined by the base station and indicated to the UE through the indication information.

In one embodiment, the method further comprises:

receiving first indication information;

and determining the second type candidate position according to the first indication information.

Here, the number of second type candidate locations corresponding to one first type candidate location may be used by the UE to determine the number of second type candidate locations for transmitting one unsuccessful SSB. For example, if a first type of candidate location corresponds to two second type of candidate locations, then an unsuccessfully transmitted SSB may be retransmitted at both second type of candidate locations.

The UE may determine, based on the first indication information, the number of the second type candidate locations, and/or the specific location of the second type candidate locations in the second time domain range, and then receive, at the second type candidate locations, the SSBs that are not successfully transmitted at the associated first type candidate locations.

One candidate location of the first type may have an association with one or more candidate locations of the second type. The association relationship between the first type candidate position and the second type candidate position may include, but is not limited to: and the corresponding relation of the bit order of the grouping formed at the first-class candidate position and the grouping formed at the second-class candidate position. For example, a first type of candidate location has the same number of bits within a packet as an associated second type of candidate location.

For example, the second type candidate position corresponding to one first type candidate position may have the same number of bits in the corresponding group. For example: and if a certain first-class candidate position is located at the j-th bit of the first-class candidate position group, the j-th bits in one or more groups of second-class candidate positions are all the second-class candidate positions associated with the first-class candidate position.

In one embodiment, the receiving the first indication information includes:

receiving PBCH information carrying the first indication information;

the determining the second type of candidate position according to the first indication information includes:

and determining the number N of the second type candidate positions according to the first indication information.

Illustratively, one bit may be used to indicate N, e.g., with "1" indicating 32 second-class candidate locations and "0" indicating 16 second-class candidate locations. Two bits may also be used to indicate N, e.g., with "11" to indicate 32 second class candidate locations, with "10" to indicate 16 second class candidate locations, with "01" to indicate 8 second class candidate locations, with "00" to indicate 4 second class candidate locations, etc.

In one embodiment, the receiving the first indication information includes:

receiving SSB sending indication information carrying the first indication information,

the method further comprises the following steps: and determining the SSB sent at the first type candidate position according to second indication information carried by the SSB sending indication information.

For example, the SSB transmitted by the first-type candidate location may be an information element in SIB1 indicating the SSB actually transmitted by the first-type candidate location. In the related art, the information element in SIB1 indicating the SSBs actually transmitted in the first-class candidate location has 16 bits, and each of the 16 bits is used to indicate the transmission status of the SSBs actually transmitted in the first-class candidate location, and may indicate the transmission status of 64 SSBs in total.

Here, since M is less than or equal to 32, the SSB transmission indication information with 16 bits may have redundant bits in indicating the transmission status of 32 SSBs, and the redundant bits may be used to carry the first indication information. For example, 1 or more bits of redundancy are used to indicate the number M of candidate positions of the second type.

In one embodiment, the second indication information includes a first sub-indication information and a second sub-indication information:

the method further comprises the following steps:

determining to send the SSB packet of the SSB at the first-class candidate position according to the first sub-indication information;

and determining the SSBs sent in each SSB packet according to the second sub-indication information.

For example, in the related art, the SSB sending indication information may occupy 16 bits for indicating the sending status of 64 SSBs, and 64 SSBs may be divided into 8 SSB groups, where 8 SSBs in each SSB group are provided, the first 8 bits of the 16 bits are the first sub-indication information, and the SSB group that sends the SSBs may be indicated in a bitmap (bitmap) manner; the last 8 bits are second sub-indication information, and a bitmap (bitmap) mode is adopted to indicate the SSBs sent in one group.

Here, since M is less than or equal to 32, in the case of 8 SSBs per SSB group as well, the first sub-indication information only needs 4 bits to indicate the SSB group that transmits the SSB. The remaining 4 bits may therefore carry first indication information for indicating the second class of candidate positions.

In one embodiment, the determining the second type of candidate position according to the first indication information includes:

and determining the number of the second-class candidate positions associated with one first-class candidate position according to the first indication information.

The first indication information may be used to indicate the number of second-class candidate positions associated with one first-class candidate position, for example, may indicate the number of 1 or more second-class candidate positions associated with one first-class candidate position.

If there are 32 first class candidate locations, there may be 32 × 1 second class candidate locations in the remaining time domain, i.e. one first class candidate location is associated with one second class candidate location. At this time, a 4th bit position "1" of the 4 bits may indicate that one candidate position of the first type is associated with 1 candidate position of the second type.

In one embodiment, the method further comprises:

One specific example is provided below in connection with any of the embodiments described above:

1. under the 120kHz SCS configuration, the configuration of a base station is appointed to send 32 SSBs at most, and the first type candidate position is configured in the position areas of the first 32 SSBs, namely the first half segment of 5ms; the remaining half is used as a second type candidate position, namely a selected position; the Index (Index) of the SSB at this time does not exceed 31.

2. If the Index of the SSB received by the UE is greater than 31, the UE considers that the base station does not configure the second type of candidate location, that is, if the UE does not receive the SSB in this period, if the SSB LBT failure of the base station is not sent, it is considered that the SSB is not received in this period.

3. The base station may specify the distribution rule of the second type of candidate locations, such as when a maximum of 32 SSBs are transmitted, the last 32 being the second type of candidate locations. If the transmission 16 transmits, 16 second-class candidate locations may be specified. Send 8 SSBs, 4 SSBs, and so on.

4. The base station may use redundant bits in the 16-bit indication of the actual transmitted SSB to indicate the second class of candidate locations. The related usage is that 64 SSBs are divided into 8 groups, and the first 8 bits in each group of 8, 16 bits use bitmap to indicate those SSBs sending SSBs; the last 8 bits represent the position of the transmitting SSB in a SSB group using a bitmap. Since the present embodiment normally transmits only 32 bits at most, 1 or more redundant bits among 16 bits may be used to indicate the second type of candidate position.

5. Of the 16 bits, 8 bits representing the position of transmitting SSB in an SSB group can be reserved continuously to indicate that the SSB group transmitting SSB indication information only needs to occupy 4 bits, and therefore, the remaining 4 bits can indicate how many candidate positions are possible. For example, if a maximum of 16 SSBs are actually sent, there may be 16 × 3 SSBs as the second type of candidate locations; 1. there are 3 candidate positions of the second class in the first class candidate position, and bit 3 in the redundant 4 bits can be set to 1.

If a maximum of 32 SSBs are actually sent, then there may be 32 × 1 SSBs as the second type of candidate positions, and bit 4 of the redundant 4 bits may be set to 1.

6. If a maximum of 8 SSBs are actually sent, a candidate location of the first type may also be provided with 3 candidate locations of the second type. But the positions of the second type candidate positions can be distinguished according to the value of the last 1 bit in the redundant 4 bits; when the last 1 bit of the 4 bits is 0, 8*3 second-class candidate positions may be located in the second half 2.5ms of the field; at 1, 8*3 candidates are 2.5ms first, 8 positions after the SSB was actually sent.

An embodiment of the present invention further provides an information transmission apparatus, which is applied to an access network device, and as shown in fig. 4, the information transmission apparatus 100 includes: a first transmission module 110, wherein,

the first sending module 110 is configured to send an SSB at M first-class candidate positions of a first time domain range of a half frame, where the half frame includes the first time domain range and a second time domain range, where the second time domain range has N second-class candidate positions, where the second-class candidate positions are used to send the SSB that is not sent at the first-class candidate positions, where M is less than or equal to 32, and M is less than or equal to N, where M and N are positive integers.

In one embodiment, the apparatus 100 further comprises:

a second sending module 120, configured to send, at the second type of candidate location, the SSB that is not sent at the first type of candidate location associated with the second type of candidate location.

In one embodiment, the apparatus 100 further comprises:

a third sending module 130, configured to send first indication information indicating the second type of candidate location.

In one embodiment, the third sending module 130 includes:

the first sending sub-module 131 is configured to send PBCH information carrying the first indication information, where the first indication information is used to indicate the number N of the second type candidate positions.

In one embodiment, the third sending module 130 includes:

a second sending sub-module 132, configured to send SSB sending indication information carrying the first indication information, where the SSB sending indication information also carries second indication information, and the second indication information is used to indicate the SSB sent at the first type candidate location.

In one embodiment, the first indication information is used for indicating the number of the second type candidate positions associated with one first type candidate position.

In one embodiment, the second indication information includes:

first sub-indication information for indicating that an SSB packet of the SSB is transmitted at the first-class candidate location;

An embodiment of the present invention further provides an information transmission apparatus, which is applied to a UE, and as shown in fig. 5, the information transmission apparatus 200 includes: the first receiving module 210 may be, among other things,

the first receiving module 210 is configured to receive SSBs at M first class candidate positions of a first time domain range of a half frame, where the half frame includes the first time domain range and a second time domain range, where the second time domain range has N second class candidate positions, where the second class candidate positions are used to transmit the SSBs that are not transmitted at the first class candidate positions, where M is less than or equal to 32, and M is less than or equal to N, where M and N are positive integers.

In one embodiment, the second type of candidate locations are used for transmitting the SSBs that are not transmitted in the first type of candidate locations due to channel sounding failure.

In one embodiment, the apparatus 200 further comprises:

a second receiving module 220 configured to receive, at the second type of candidate location, the SSB that is not sent at the first type of candidate location associated with the second type of candidate location.

In one embodiment, the apparatus 200 further comprises:

a third receiving module 230 configured to receive the first indication information;

a first determining module 240 configured to determine the second type of candidate location according to the first indication information.

In one embodiment, the third receiving module 230 includes:

a first receiving sub-module 231, configured to receive PBCH information carrying the first indication information;

the first determining module 240 may include, for example,

the first determining submodule 241 is configured to determine the number N of the second type candidate positions according to the first indication information.

In one embodiment, the first determining module 240 includes,

a second determining sub-module 242 configured to receive the SSB sending indication information carrying the first indication information,

the apparatus 200 further comprises:

a second determining module 250, configured to determine, according to second indication information carried by the SSB sending indication information, the SSB sent at the first type candidate location.

In one embodiment, the first determining module 240 includes,

a third determining submodule 243 configured to determine, according to the first indication information, the number of second-class candidate positions associated with one of the first-class candidate positions.

In one embodiment, the second indication information includes first sub-indication information and second sub-indication information:

the apparatus 200 further comprises:

a third determining module 260 configured to determine, according to the first sub-indication information, to send the SSB packet of the SSB at the first class candidate location;

a fourth determining module 270 configured to determine the SSBs sent in each SSB packet according to the second sub-indication information.

In one embodiment, the apparatus 200 further comprises:

a fifth determining module 280 configured to determine that the field does not have the second type of candidate position in response to determining that the index value of the beam on which the user equipment UE is located is greater than or equal to 32.

In one embodiment, the apparatus 200 further comprises:

a sixth determining module 290 configured to determine that there is no candidate location of the second type within the field in response to the received index of the SSB being greater than or equal to 32.

In an exemplary embodiment, the first transmitting module 110, the second transmitting module 120, the third transmitting module 130, the first receiving module 210, the second receiving module 220, the third receiving module 230, the first determining module 240, the second determining module 250, the third determining module 260, the fourth determining module 270, the fifth determining module 280, and the sixth determining module 290, etc. may be implemented by one or more Central Processing Units (CPUs), graphics Processing Units (GPUs), baseband Processors (BPs), application Specific Integrated Circuits (ASICs), field Programmable Gate Arrays (FPGAs), field Programmable Logic devices (FPGAs), micro controllers, general purpose processors (microcontrollers), or other electronic Processing elements (MCU).

Fig. 6 is a block diagram illustrating an apparatus 3000 for information transfer, according to an example embodiment. For example, the apparatus 3000 may be a mobile phone, a computer, a digital broadcast terminal, a messaging device, a game console, a tablet device, a medical device, an exercise device, a personal digital assistant, and the like.

Referring to fig. 6, the apparatus 3000 may include one or more of the following components: processing component 3002, memory 3004, power component 3006, multimedia component 3008, audio component 3010, input/output (I/O) interface 3012, sensor component 3014, and communications component 3016.

The processing component 3002 generally controls the overall operation of the device 3000, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations. The processing component 3002 may include one or more processors 3020 to execute instructions to perform all or a portion of the steps of the methods described above. Further, the processing component 3002 may include one or more modules that facilitate interaction between the processing component 3002 and other components. For example, the processing component 3002 may include a multimedia module to facilitate interaction between the multimedia component 3008 and the processing component 3002.

The memory 3004 is configured to store various types of data to support operations at the device 3000. Examples of such data include instructions for any application or method operating on the device 3000, contact data, phonebook data, messages, pictures, videos, and so forth. The memory 3004 may be implemented by any type or combination of volatile or non-volatile memory devices such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disks.

The power supply component 3006 provides power to the various components of the device 3000. The power components 3006 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power for the device 3000.

The multimedia component 3008 includes a screen that provides an output interface between the device 3000 and a user. In some embodiments, the screen may include a Liquid Crystal Display (LCD) and a Touch Panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive an input signal from a user. The touch panel includes one or more touch sensors to sense touch, slide, and gestures on the touch panel. The touch sensor may not only sense the boundary of a touch or slide action, but also detect the duration and pressure associated with the touch or slide operation. In some embodiments, multimedia component 3008 includes a front facing camera and/or a rear facing camera. The front camera and/or the rear camera may receive external multimedia data when the device 3000 is in an operating mode, such as a shooting mode or a video mode. Each front camera and rear camera may be a fixed optical lens system or have a focal length and optical zoom capability.

The audio component 3010 is configured to output and/or input an audio signal. For example, the audio component 3010 may include a Microphone (MIC) configured to receive external audio signals when the apparatus 3000 is in an operational mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signal may further be stored in the memory 3004 or transmitted via the communication component 3016. In some embodiments, the audio component 3010 further includes a speaker for outputting audio signals.

I/O interface 3012 provides an interface between processing component 3002 and peripheral interface modules, which may be keyboards, click wheels, buttons, etc. These buttons may include, but are not limited to: a home button, a volume button, a start button, and a lock button.

The sensor component 3014 includes one or more sensors for providing various aspects of state assessment for the device 3000. For example, the sensor component 3014 can detect the open/closed status of the device 3000, the relative positioning of components, such as a display and keypad of the device 3000, the sensor component 3014 can also detect a change in the position of the device 3000 or a component of the device 3000, the presence or absence of user contact with the device 3000, orientation or acceleration/deceleration of the device 3000, and a change in the temperature of the device 3000. The sensor assembly 3014 may include a proximity sensor configured to detect the presence of a nearby object without any physical contact. The sensor assembly 3014 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 3014 may also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

The communication component 3016 is configured to facilitate wired or wireless communication between the apparatus 3000 and other devices. Device 3000 may access a wireless network based on a communication standard, such as Wi-Fi,2G, or 3G, or a combination thereof. In an exemplary embodiment, the communication component 3016 receives a broadcast signal or broadcast associated information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 3016 further includes a Near Field Communication (NFC) module to facilitate short-range communications. For example, the NFC module may be implemented based on Radio Frequency Identification (RFID) technology, infrared data association (IrDA) technology, ultra Wideband (UWB) technology, bluetooth (BT) technology, and other technologies.

In an exemplary embodiment, the apparatus 3000 may be implemented by one or more Application Specific Integrated Circuits (ASICs), digital Signal Processors (DSPs), digital Signal Processing Devices (DSPDs), programmable Logic Devices (PLDs), field Programmable Gate Arrays (FPGAs), controllers, micro-controllers, microprocessors or other electronic components for performing the above-described methods.

In an exemplary embodiment, a non-transitory computer readable storage medium comprising instructions, such as the memory 3004 comprising instructions, executable by the processor 3020 of the apparatus 3000 to perform the above-described method is also provided. For example, the non-transitory computer readable storage medium may be a ROM, a Random Access Memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, and the like.

Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the embodiments of the invention following, in general, the principles of the embodiments of the invention and including such departures from the present disclosure as come within known or customary practice within the art to which the embodiments of the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of embodiments of the invention being indicated by the following claims.

It is to be understood that the embodiments of the present invention are not limited to the precise arrangements described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of embodiments of the invention is limited only by the appended claims.

Claims

An information transmission method, wherein the method is executed by an access network device, and the method comprises the following steps:

transmitting a synchronization signal block SSB at M first-class candidate positions of a first time domain range of a half frame, wherein the half frame comprises the first time domain range and a second time domain range, wherein N second-class candidate positions are in the second time domain range, the second-class candidate positions are used for transmitting the SSB which is not transmitted at the first-class candidate positions, M is less than or equal to 32, M is less than or equal to N, and both M and N are positive integers.
The method of claim 1, wherein,

the second type of candidate location is used for sending the SSB which is not sent in the first type of candidate location due to channel sounding failure.
The method of claim 1, wherein,

in response to the duration of the second time domain range being i times the duration of the first time domain range, N is i times M, where i is a positive integer greater than or equal to 1.
The method of claim 1, wherein the method further comprises:

and sending the SSB which is not sent by the first class candidate position associated with the second class candidate position at the second class candidate position.
The method of any of claims 1 to 4, wherein the method further comprises:

and sending first indication information indicating the second type candidate position.
The method of claim 5, wherein the sending first indication information indicating the second class of candidate locations comprises:

and sending physical broadcast channel PBCH information carrying the first indication information, wherein the first indication information is used for indicating the second type candidate position number N.
The method of claim 5, wherein the sending first indication information indicating the second class of candidate locations comprises:

and sending SSB sending indication information carrying the first indication information, wherein the SSB sending indication information also carries second indication information, and the second indication information is used for indicating the SSB sent at the first type candidate position.
The method of claim 7, wherein the first indication information indicates a number of candidate locations of the second type associated with one of the candidate locations of the first type.
The method of claim 7, wherein the second indication information comprises:

first sub-indication information for indicating that an SSB packet of the SSB is transmitted at the first-class candidate location;

second sub-indication information for indicating the SSBs sent within each of the SSB packets.
An information transmission method, wherein the method is performed by a User Equipment (UE), and the method comprises the following steps:

receiving a synchronization signal block SSB at M first-class candidate positions of a first time domain range of a field, wherein the field comprises the first time domain range and a second time domain range, wherein the second time domain range has N second-class candidate positions, wherein the second-class candidate positions are used for transmitting the SSB which is not transmitted at the first-class candidate positions, M is less than or equal to 32, M is less than or equal to N, and both M and N are positive integers.
The method of claim 10, wherein,

the second type of candidate location is used for sending the SSB which is not sent in the first type of candidate location due to channel sounding failure.
The method of claim 10, wherein,

in response to the duration of the second time domain range being i times the duration of the first time domain range, N is i times M, where i is a positive integer greater than or equal to 1.
The method of claim 10, wherein the method further comprises:

receiving, at the second type of candidate location, the SSB not sent at the first type of candidate location associated with the second type of candidate location.
The method of any of claims 10 to 13, wherein the method further comprises:

receiving first indication information;

and determining the second type candidate position according to the first indication information.
The method of claim 14, wherein the receiving first indication information comprises:

receiving physical broadcast channel PBCH information carrying the first indication information;

the determining the second type of candidate position according to the first indication information includes:

and determining the number N of the second type candidate positions according to the first indication information.
The method of claim 15, wherein the receiving first indication information comprises:

receiving SSB sending indication information carrying the first indication information,

the method further comprises the following steps: and determining the SSB sent at the first type candidate position according to second indication information carried by the SSB sending indication information.
The method of claim 16, wherein,

the determining the second type of candidate position according to the first indication information includes:

and determining the number of the second-class candidate positions associated with one first-class candidate position according to the first indication information.
The method of claim 16, wherein the second indication information comprises first sub-indication information and second sub-indication information:

the method further comprises the following steps:

determining to send the SSB packet of the SSB at the first-class candidate position according to the first sub-indication information;

and determining the SSBs sent in each SSB packet according to the second sub-indication information.
The method of claim 10, wherein the method further comprises:

and in response to determining that the index value of the beam on which the UE is positioned is greater than or equal to 32, determining that the half frame does not have the second type of candidate position.
The method of claim 10, wherein the method further comprises:

determining that there is no candidate location of the second type within the field in response to the received index of the SSB being greater than or equal to 32.
An information transmission apparatus, wherein the apparatus comprises: a first sending module, wherein,

the first sending module is configured to send an SSB at M first-class candidate positions of a first time domain range of a half frame, where the half frame includes the first time domain range and a second time domain range, where the second time domain range has N second-class candidate positions, where the second-class candidate positions are used to send the SSB that is not sent at the first-class candidate positions, where M is less than or equal to 32, and M is less than or equal to N, where M and N are positive integers.
The apparatus of claim 21, wherein,

in response to the duration of the second time domain range being i times the duration of the first time domain range, N is i times M, where i is a positive integer greater than or equal to 1.
An information transmission apparatus, wherein the apparatus comprises: a first receiving module, wherein,

the first receiving module is configured to receive a synchronization signal block SSB at M first-class candidate positions of a first time domain range of a field, where the field includes the first time domain range and a second time domain range, where the second time domain range has N second-class candidate positions, where the second-class candidate positions are used to transmit the SSB that is not transmitted at the first-class candidate positions, where M is less than or equal to 32, and M is less than or equal to N, where M and N are positive integers.
The apparatus of claim 23, wherein,

in response to the duration of the second time domain range being i times the duration of the first time domain range, N is i times M, where i is a positive integer greater than or equal to 1.
A communication device apparatus comprising a processor, a memory and an executable program stored on the memory and executable by the processor, wherein the processor executes the executable program to perform the steps of the information transmission method according to any one of claims 1 to 9 or 10 to 20.
A storage medium on which an executable program is stored, wherein the executable program when executed by a processor implements the steps of the information transmission method of any one of claims 1 to 9 or 10 to 20.