CN110601809B

CN110601809B - Information sending method and device and information receiving method and device

Info

Publication number: CN110601809B
Application number: CN201910939566.3A
Authority: CN
Inventors: 周欢; 徐志昆
Original assignee: Beijing Ziguang Zhanrui Communication Technology Co Ltd
Current assignee: Beijing Ziguang Zhanrui Communication Technology Co Ltd
Priority date: 2019-09-30
Filing date: 2019-09-30
Publication date: 2021-04-02
Anticipated expiration: 2039-09-30
Also published as: CN110601809A; WO2021063131A1

Abstract

The present disclosure relates to an information sending method and apparatus, and an information receiving method and apparatus, wherein the information sending method includes: determining time domain resources for transmitting a Synchronization Signal Block (SSB), wherein the SSB comprises a Primary Synchronization Signal (PSS), a Secondary Synchronization Signal (SSS), a Physical Broadcast Channel (PBCH) and a demodulation reference signal (DMRS) for the PBCH, and the SSB occupies 4 continuous Orthogonal Frequency Division Multiplexing (OFDM) symbols or 3 continuous OFDM symbols; and transmitting the SSB by utilizing the time domain resource. The SSB of the embodiment of the present disclosure occupies 4 OFDM symbols or 3 OFDM symbols, and can meet the requirement of 5G NR, and in each frequency band, the SSB can be transmitted, thereby reducing overhead and enhancing environmental adaptability and flexibility.

Description

Information sending method and device and information receiving method and device

Technical Field

The present disclosure relates to the field of communications technologies, and in particular, to an information sending method and apparatus, and an information receiving method and apparatus.

Background

Before the base station communicates with the terminal device, downlink synchronization needs to be performed first. When downlink synchronization is carried out, the base station sends downlink synchronization signals through a plurality of sending wave beams, and the terminal equipment receives and detects the downlink synchronization signals by utilizing one or a plurality of receiving wave beams to obtain the best downlink sending wave beam and receiving wave beam pair, time and system information.

In the related art, when downlink synchronization is performed, overhead is high, requirements of a New Radio (NR) cannot be met, and environmental adaptability and flexibility are poor.

Disclosure of Invention

In view of this, the present disclosure provides an information sending method, including:

determining time domain resources for transmitting a Synchronization Signal Block (SSB), wherein the SSB comprises a Primary Synchronization Signal (PSS), a Secondary Synchronization Signal (SSS), a Physical Broadcast Channel (PBCH) and a demodulation reference signal (DMRS) for the PBCH, and the SSB occupies 4 continuous Orthogonal Frequency Division Multiplexing (OFDM) symbols or 3 continuous OFDM symbols;

and transmitting the SSB by utilizing the time domain resource.

In a possible implementation, the determining time domain resources for transmitting a synchronization signal block SSB includes:

determining the time domain resource among SSB candidate time domain resources, in case the SSB occupies 4 consecutive OFDM symbols.

In one possible implementation, in a case where the carrier frequency at which the SSB is transmitted is greater than 52.6GHz and the subcarrier spacing is 240KHz, the symbol index of the first time-domain symbol of the SSB candidate time-domain resource located in a half frame includes one or more of:

{8, 12, 16, 20, 32, 36, 40, 44} +56 × n, where the numbers in the set represent the index of the OFDM symbol in the field,

n is 0, 1, 2, 3, 5, 6, 7, 8, 10, 11, 12, 13, 15, 16, 17, 18, and the maximum number of SSB candidate time domain resources is 128.

In one possible implementation, in a case where the carrier frequency at which the SSB is transmitted is greater than 52.6GHz and the subcarrier spacing is 480KHz, the symbol index of the first time-domain symbol of the SSB candidate time-domain resource located in a half frame includes one or more of:

{16, 20, 24, 28, 32, 36, 40, 44, 64, 68, 72, 76, 80, 84, 88, 92} +112 x n, where the numbers in the set represent the index of the OFDM symbol in the field,

n is 0, 1, 2, 3, and the maximum number of SSB candidate time domain resources is 64; or

n is 0, 1, 2, 3, 5, 6, 7, 8, and the maximum number of SSB candidate time domain resources is 128; or

n is 0, 1, 2, 3, 5, 6, 7, 8, 10, 11, 12, 13, 15, 16, 17, 18, and the maximum number of SSB candidate time domain resources is 256.

In one possible implementation, in a case where the carrier frequency at which the SSB is transmitted is greater than 52.6GHz and the subcarrier spacing is 960KHz, the symbol index of the first time-domain symbol of the SSB candidate time-domain resource located in a half frame includes one or more of:

{32, 36, 40, 44, 48, 52, 56, 60, 64, 68, 72, 76, 80, 84, 88, 92; 128, 132, 136, 140, 144, 148, 152, 156, 160, 164, 168, 172, 176, 180, 184, 188} +224 n, wherein the numbers in the set represent the index of the OFDM symbol in the field,

n is 0, 1, and the maximum number of SSB candidate time domain resources is 64; or

n is 0, 1, 2, 3, and the maximum number of SSB candidate time domain resources is 128; or

n is 0, 1, 2, 3, 5, 6, 7, 8, and the maximum number of SSB candidate time domain resources is 256; or

n is 0, 1, 2, 3, 5, 6, 7, 8, 10, 11, 12, 13, 15, 16, 17, 18, and the maximum number of SSB candidate time domain resources is 512.

In a possible implementation, when the SSB occupies 3 consecutive OFDM symbols, the SSS and the PSS each occupy one OFDM symbol, and the PBCH and the DMRS for the PBCH occupy one OFDM symbol.

In one possible embodiment, the frequency domain resources of the PSS and/or the SSS comprise 12-22 physical resource blocks, PRBs, and the PBCH comprises 36-48 PRBs.

In one possible embodiment, the PSS and SSS have a subcarrier spacing of 2 times the PBCH subcarrier spacing.

According to another aspect of the present disclosure, there is provided an information receiving method, the method including:

determining time domain resources of a received Synchronization Signal Block (SSB), the SSB comprising a Primary Synchronization Signal (PSS), a Secondary Synchronization Signal (SSS), a Physical Broadcast Channel (PBCH) and a demodulation reference signal (DMRS) for the PBCH, wherein the SSB occupies 4 consecutive Orthogonal Frequency Division Multiplexing (OFDM) symbols or 3 consecutive OFDM symbols;

receiving the SSB using the time domain resources.

In one possible embodiment, the determining time domain resources of the received synchronization signal block SSB includes:

In one possible implementation, in a case where a carrier frequency carrying the SSB is greater than 52.6GHz and a subcarrier spacing is 240KHz, a symbol index of a first time-domain symbol of the SSB candidate time-domain resource located in a half frame includes one or more of:

In one possible implementation, in a case where a carrier frequency carrying the SSB is greater than 52.6GHz and a subcarrier spacing is 480KHz, a symbol index of a first time-domain symbol of the SSB candidate time-domain resource located in a half frame includes one or more of:

In one possible implementation, in a case where a carrier frequency carrying the SSB is greater than 52.6GHz and a subcarrier spacing is 960KHz, a symbol index of a first time-domain symbol of the SSB candidate time-domain resource located in a half frame includes one or more of:

According to another aspect of the present disclosure, there is provided an information transmitting apparatus, the apparatus including:

a first determining module, configured to determine time domain resources for transmitting a synchronization signal block SSB, where the SSB includes a primary synchronization signal PSS, a secondary synchronization signal SSS, a physical broadcast channel PBCH, and a demodulation reference signal DMRS for the PBCH, and the SSB occupies 4 consecutive orthogonal frequency division multiplexing OFDM symbols or 3 consecutive OFDM symbols;

and the sending module is electrically connected to the first determining module and is used for sending the SSB by using the time domain resource.

According to another aspect of the present disclosure, there is provided an information receiving apparatus, the transposing including:

a second determining module, configured to determine time domain resources for receiving a synchronization signal block SSB, where the SSB includes a primary synchronization signal PSS, a secondary synchronization signal SSS, a physical broadcast channel PBCH, and a demodulation reference signal DMRS for the PBCH, and the SSB occupies 4 consecutive orthogonal frequency division multiplexing OFDM symbols or 3 consecutive OFDM symbols;

and the receiving module is electrically connected to the second determining module and is used for receiving the SSB by using the time domain resource.

According to another aspect of the present disclosure, a computer device is presented, the computer device comprising: a processor; a memory for storing processor-executable instructions;

wherein the processor is configured to:

and executing the information sending method or the information receiving method.

According to another aspect of the present disclosure, a non-transitory computer-readable storage medium is provided, on which computer program instructions are stored, the computer program instructions, when executed by a processor, implementing the information transmitting method or the information receiving method.

By the above method, the access network device of the embodiment of the present disclosure may determine the time domain resource for sending the synchronization signal block SSB, where the SSB occupies 4 consecutive OFDM symbols or 3 consecutive OFDM symbols, and send the SSB by using the time domain resource, so that the terminal may obtain downlink synchronization information to perform downlink synchronization, and the SSB of the embodiment of the present disclosure occupies 4 OFDM symbols or 3 OFDM symbols, which may satisfy the requirement of 5G NR, and may implement sending of the SSB in each frequency band, reduce overhead, and enhance environmental adaptability and flexibility.

Other features and aspects of the present disclosure will become apparent from the following detailed description of exemplary embodiments, which proceeds with reference to the accompanying drawings.

Drawings

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

Fig. 1 shows a flowchart of an information transmitting method according to an embodiment of the present disclosure.

Fig. 2 shows a schematic diagram of an SSB according to an embodiment of the present disclosure.

Fig. 3 shows a distribution diagram of SSB time-frequency resources according to an embodiment of the present disclosure.

Fig. 4a is a schematic diagram illustrating distribution of time-frequency resources of an SSB in a field according to an embodiment of the present disclosure.

Fig. 4b shows a schematic diagram of time-frequency resource distribution in two time slots of an SSB according to an embodiment of the present disclosure, and fig. 4c shows a schematic diagram of time-frequency resource distribution in a half frame of an SSB according to an embodiment of the present disclosure.

Fig. 4d shows a schematic diagram of time-frequency resource distribution in two time slots of an SSB according to an embodiment of the present disclosure, and fig. 4e shows a schematic diagram of time-frequency resource distribution in a half frame of an SSB according to an embodiment of the present disclosure.

Fig. 5a, 5b, 5c, 5d show schematic diagrams of SSBs according to an embodiment of the present disclosure.

Fig. 6 shows a flowchart of an information receiving method according to an embodiment of the present disclosure.

Fig. 7 shows a block diagram of an information transmitting apparatus according to an embodiment of the present disclosure.

Fig. 8 shows a block diagram of an information receiving apparatus according to an embodiment of the present disclosure.

Fig. 9 shows a schematic structural diagram of a mobile communication system according to an embodiment of the present disclosure.

Detailed Description

Various exemplary embodiments, features and aspects of the present disclosure will be described in detail below with reference to the accompanying drawings. In the drawings, like reference numbers can indicate functionally identical or similar elements. While the various aspects of the embodiments are presented in drawings, the drawings are not necessarily drawn to scale unless specifically indicated.

The word "exemplary" is used exclusively herein to mean "serving as an example, embodiment, or illustration. Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments.

Furthermore, in the following detailed description, numerous specific details are set forth in order to provide a better understanding of the present disclosure. It will be understood by those skilled in the art that the present disclosure may be practiced without some of these specific details. In some instances, methods, means, elements and circuits that are well known to those skilled in the art have not been described in detail so as not to obscure the present disclosure.

Referring to fig. 1, fig. 1 shows a flowchart of an information transmitting method according to an embodiment of the present disclosure.

The method can be applied to Access Network equipment, where the Access Network equipment can be a Base Station (BS), and can also be referred to as base station equipment, and is a device deployed in a Radio Access Network (RAN) to provide a wireless communication function. For example, the device providing the base station function in the 2G network includes a Base Transceiver Station (BTS), the device providing the base station function in the 3G network includes a node B (english: NodeB), the device providing the base station function in the 4G network includes an evolved node B (evolved NodeB, eNB), the device providing the base station function in the Wireless Local Area Network (WLAN) is an Access Point (AP), the device providing the base station function in the 5G system is a gNB, and a node B (ng-eNB) that continues to evolve, the access network device in the embodiment of the present disclosure may further include a device providing the base station function in a new future communication system, and the specific implementation manner of the access network device in the embodiment of the present disclosure is not limited. The access network equipment may also include Home base stations (Home enbs, henbs), relays (Relay), Pico base stations Pico, etc.

As shown in fig. 1, the method includes:

step S11, determining a time domain resource for transmitting a Synchronization Signal Block (SSB), where the SSB includes a Primary Synchronization Signal (PSS), a Secondary Synchronization Signal (SSS), a Physical Broadcast Channel (PBCH), and a Demodulation Reference Signal (DMRS) for the PBCH, and the SSB occupies 4 consecutive Orthogonal Frequency Division Multiplexing (OFDM) symbols or 3 consecutive OFDM symbols;

step S12, sending the SSB using the time domain resource.

In a possible implementation, the step S11 of determining the time domain resource for transmitting the synchronization signal block SSB may include:

The embodiment of the disclosure sets multiple SSB candidate time domain resources according to different subcarrier spacings (SCS for short), and sets multiple SSB candidate time domain resources for carrier frequencies greater than (or equal to) 52.6GHz and corresponding SCS, which can satisfy SSB transmission under various conditions, increase selection of base stations, and increase environmental adaptability and flexibility, thereby enabling a terminal to quickly implement downlink synchronization.

The case where the SSB occupies 4 consecutive OFDM symbols will be exemplarily explained below.

Referring to fig. 2, fig. 2 shows a schematic diagram of an SSB according to an embodiment of the present disclosure.

In a New Radio (NR) licensed spectrum, the number of OFDM symbols that each slot (slot) may include is determined by a CP (cyclic prefix), and in one example, each slot may include 14 symbols, and how many slots are included in 1 millisecond (ms) is determined by a subcarrier spacing. For example, a subcarrier spacing of 15 kilohertz (KHz) contains 1 slot in 1 ms; when the subcarrier interval is 30KHz, 2 slots are contained in 1 ms; and when the subcarrier interval is 60KHz, 4 slots are contained in 1ms, and so on.

In order to reduce the reference Signal of always-on (always on) and thus reduce the overhead, the embodiment of the present disclosure proposes a Synchronization Signal Block (SSB) in NR. As shown in fig. 2, each SSB occupies 4 consecutive symbols, which are, in order, a primary synchronization signal PSS, a physical broadcast channel PBCH, a secondary synchronization signal SSS, and a PBCH, where 12 Physical Resource Blocks (PRBs) in the middle of the symbol where the SSS is located are SSS, 4 RBs on both sides are PBCH, and some subcarriers in the PBCH are demodulation reference signals DMRS for the PBCH. The subcarrier spacing of the synchronization signal block SSB may be 15KHz, 30KHz, 120KHz, 240KHz, and so on.

In one possible implementation, all synchronization signal blocks may be transmitted in half frames within 5 ms. The embodiments of the present disclosure do not limit in which half frame the SSB is transmitted.

In order to support beam (beam) transmission, when beams exist, each beam needs to transmit an SSB, so that the maximum number of synchronization signal blocks that can be transmitted within 5ms is 4 (when the carrier frequency is below 3 GHz), 8 (when the carrier frequency is 3GHz to 6 GHz), 64 (when the carrier frequency is above 6 GHz), or other, and a plurality of SSBs within 5ms are called a synchronization block set (SSB burst set). The SSB burst set may have a period of 5ms, 10ms, 20ms, 40ms, etc.

Referring to fig. 3, fig. 3 is a schematic diagram illustrating distribution of SSB time-frequency resources according to an embodiment of the disclosure.

As shown in fig. 3, in one example, when the subcarrier spacing of the synchronization signal block is 15KHz, the synchronization signal block time domain distribution is: symbols 2-5 and symbols 8-11 are occupied in every 14 symbols. And when the subcarrier interval is 15KHz, the number of synchronization signal blocks (the maximum number of the SSB candidate time domain resources) is at most 4 or 8, i.e. the symbol index of the first time domain symbol of the SSB candidate time domain resources located in a half frame includes one or more of: {2, 8} +14 × n, n is 0, 1 or 0, 1, 2, 3.

For example, when n is 0, the SSB candidate resources occupy symbols 2-5 and 8-11, and the first time domain symbol is the 2 nd OFDM symbol and the 8 th OFDM symbol in the half frame; when n is 1, the SSB candidate resource occupies symbols 16-19 and symbols 22-25.

In one example, when the subcarrier spacing of the synchronization signal block is 30KHz, the first time domain mapping pattern (pattern) of the synchronization signal block is: symbols 2-5 and symbols 8-11 are occupied in every 14 symbols. And when the subcarrier interval is 30KHz, the number of the synchronization signal blocks is at most 4 or 8, that is, the symbol index of the first time domain symbol of the SSB candidate time domain resource located in a half frame includes one or more of the following: {2, 8} +14 × n, n is 0, 1 or 0, 1, 2, 3.

In one example, when the subcarrier spacing of the synchronization signal block is 30KHz, a second time domain distribution of the synchronization signal block is: symbols 4-7, symbols 8-11, symbols 16-19 and symbols 20-23 are occupied in each 28 symbols. And when the subcarrier interval is 30KHz, the number of the synchronization signal blocks is at most 4 or 8, that is, the symbol index of the first time domain symbol of the SSB candidate time domain resource located in a half frame includes one or more of the following: {4, 8, 16, 20} +28 × n, n is 0 or n is 0, 1.

In one example, when the subcarrier spacing of the synchronization signal block is 120KHz, the synchronization signal block time domain distribution is: symbols 4-7, symbols 8-11, symbols 16-19 and symbols 20-23 are occupied in each 28 symbols. And when the subcarrier interval is 120KHz, the number of the synchronous signal blocks is up to 64, that is, the symbol index of the first time domain symbol of the SSB candidate time domain resource located in the half frame includes one or more of the following: {4, 8, 16, 20} +28 × n, n is 0, 1, 2, 3, 5, 6, 7, 8, 10, 11, 12, 13, 15, 16, 17, 18.

In one example, when the subcarrier spacing of the synchronization signal block is 240KHz, the synchronization signal block time domain distribution is: the symbols 8-11, 12-15, 16-19, 20-23, 32-35, 36-39, 40-43 and 44-47 are occupied in each 56 symbols. And when the subcarrier interval is 240KHz, the number of the synchronization signal blocks is at most 64, that is, the symbol index of the first time domain symbol of the SSB candidate time domain resource located in the half frame includes one or more of the following: {8, 12, 16, 20, 32, 36, 40, 44} +56 × n, n is 0, 1, 2, 3, 5, 6, 7, 8.

Of course, the above description is illustrative, and should not be taken as limiting the disclosure.

Referring to fig. 4a, fig. 4a is a schematic diagram illustrating distribution of time-frequency resources of an SSB in a field according to an embodiment of the disclosure.

In one possible implementation, as shown in fig. 4a, in the case that the carrier frequency for transmitting the SSB is greater than 52.6GHz and the subcarrier spacing is 240KHz, the symbol index of the first time-domain symbol of the SSB candidate time-domain resource located in a half frame includes one or more of:

Referring to fig. 4b and 4c, fig. 4b shows a schematic diagram of time-frequency resource distribution in two time slots of an SSB according to an embodiment of the disclosure, and fig. 4c shows a schematic diagram of time-frequency resource distribution in a half frame of an SSB according to an embodiment of the disclosure.

In one possible implementation, as shown in fig. 4b, in the case that the carrier frequency for transmitting the SSB is greater than 52.6GHz and the subcarrier spacing is 480KHz, the symbol index of the first time-domain symbol of the SSB candidate time-domain resource located in a half frame includes one or more of:

where n can have a variety of selectable values.

In one example, n is 0, 1, 2, 3, and the maximum number of SSB candidate time domain resources is 64;

in one example, n is 0, 1, 2, 3, 5, 6, 7, 8, and the maximum number of SSB candidate time domain resources is 128;

in one example, n is 0, 1, 2, 3, 5, 6, 7, 8, 10, 11, 12, 13, 15, 16, 17, 18, and the maximum number of SSB candidate time domain resources is 256.

Referring to fig. 4d and 4e, fig. 4d shows a schematic diagram of time-frequency resource distribution in two time slots of an SSB according to an embodiment of the disclosure, and fig. 4e shows a schematic diagram of time-frequency resource distribution in a half frame of an SSB according to an embodiment of the disclosure.

In one possible implementation, as shown in fig. 4d, in the case that the carrier frequency for transmitting the SSB is greater than 52.6GHz and the subcarrier spacing is 960KHz, the symbol index of the first time-domain symbol of the SSB candidate time-domain resource located in a half frame includes one or more of:

where n can have a variety of selectable values.

In one example, n is 0, 1, and the maximum number of SSB candidate time domain resources is 64;

in one example, n is 0, 1, 2, 3, and the maximum number of SSB candidate time domain resources is 128;

in one example, n is 0, 1, 2, 3, 5, 6, 7, 8, and the maximum number of SSB candidate time domain resources is 256;

in one example, n is 0, 1, 2, 3, 5, 6, 7, 8, 10, 11, 12, 13, 15, 16, 17, 18, and the maximum number of SSB candidate time domain resources is 512.

In the NR grant spectrum, channels are available at any time, so for each synchronization signal block, as long as the base station wants to transmit, each synchronization signal block may be transmitted on a respective corresponding fixed time-frequency resource, that is, a plurality of SSB candidate time-domain resources proposed in the embodiment of the present disclosure may all be used for transmitting SSBs, the base station may select the SSB candidate time-domain resources as needed to transmit SSBs, and when the base station transmits a plurality of SSBs, the beam directions for transmitting SSBs may be the same or different. Meanwhile, the sending of the synchronization signal block carries the respective SSB index (index), and the terminal can implement the time domain synchronization with the base station according to the detected SSB index and the symbol position where the SSB corresponding to the SSB index written in the terminal chip is located.

The SSB candidate time domain resource provided by the embodiment of the present disclosure may be used in a scenario where the carrier frequency is higher than 52.6GHz, and the SSB may be sent through the SSB candidate time domain resource introduced in the above example, and may use various scenarios related to 5G NR, when the carrier frequency is higher than 52.6GHz, since a larger subcarrier interval (e.g., 480KHz, 960KHz, etc.) may be possibly adopted, a conventional downlink synchronization manner may not meet the requirement, and downlink synchronization may not be quickly and correctly achieved.

The case where the SSB occupies 4 consecutive OFDM symbols is described above, and the case where the SSB occupies 3 consecutive OFDM symbols will be described below.

Referring to fig. 5a, 5b, 5c, and 5d, fig. 5a, 5b, 5c, and 5d show schematic diagrams of an SSB according to an embodiment of the disclosure.

In one possible implementation, as shown in fig. 5a, when the SSB occupies 3 consecutive OFDM symbols, the SSS and the PSS each occupy one OFDM symbol, and the PBCH and the DMRS for the PBCH occupy one OFDM symbol.

In one possible implementation, the frequency domain resources of the PSS and/or the SSS may comprise 12-22 physical resource blocks PRB.

In one possible implementation, the PBCH comprises 36-48 PRBs.

In one example, as shown in fig. 5a, PSS, SSS may occupy 12 PRBs, and PBCH may occupy 36 or 40 PRBs.

In one example, as shown in fig. 5b and 5c, PSS and/or SSS frequency domain resources may occupy 22 PRBs.

Of course, the above description is exemplary, and the PSS, SSS, PBCH may also include other numbers of PRBs, thereby realizing the transmission of the downlink synchronization signal.

In one possible implementation, as shown in fig. 5d, the subcarrier spacing of the PSS and the SSS is 2 times the PBCH subcarrier spacing.

In this case, PSS, SSS may occupy 12 PRBs, and PBCH may occupy 40 or 30 PRBs.

It should be noted that, the embodiment of the present disclosure proposes a manner of transmitting the SSB by 3 OFDM symbols, however, when the SSB occupies 3 consecutive OFDM symbols, the SSB candidate time domain resource of each SSB in a half frame is not limited, and those skilled in the art may set the SSB candidate time domain resource according to actual situations or needs.

In the embodiment of the disclosure, by setting the subcarrier interval of the PSS and the SSS to be 2 times the subcarrier interval of the PBCH, when the terminal receives the SSB, the PBCH can be rapidly demodulated to improve the speed and efficiency of downlink synchronization.

The SSB proposed by the embodiment of the present disclosure occupies 3 consecutive OFDM, and is applicable to a scenario in which the carrier frequency is greater than (or equal to) 52.6GHz, and when the carrier frequency is greater than 52.6GHz, PBCH may be transmitted in one time domain symbol.

Referring to fig. 6, fig. 6 is a flowchart illustrating an information receiving method according to an embodiment of the present disclosure.

The method can be applied to a terminal device, as shown in fig. 6, and includes:

step S21, determining time domain resources for receiving a synchronization signal block SSB, where the SSB includes a primary synchronization signal PSS, a secondary synchronization signal SSS, a physical broadcast channel PBCH, and a demodulation reference signal DMRS for the PBCH, and the SSB occupies 4 consecutive orthogonal frequency division multiplexing OFDM symbols or 3 consecutive OFDM symbols;

step S21, receiving the SSB using the time domain resource.

Through the above method, the terminal device of the embodiment of the present disclosure may determine the time domain resource for sending the synchronization signal block SSB, where the SSB occupies 4 consecutive OFDM symbols or 3 consecutive OFDM symbols, and receive the SSB using the time domain resource, and the terminal device may obtain downlink synchronization information according to the received SSB to perform downlink synchronization.

It should be noted that the information receiving method is executed by a terminal device, and corresponds to an information sending method executed by an access network device, and for specific introduction of the information receiving method, reference is made to the description of the information sending method, which is not described herein again.

Referring to fig. 7, fig. 7 is a block diagram of an information transmitting apparatus according to an embodiment of the present disclosure.

The apparatus may be applied in an access network device, as shown in fig. 7, and includes:

a first determining module 61, configured to determine time domain resources for transmitting a synchronization signal block SSB, where the SSB includes a primary synchronization signal PSS, a secondary synchronization signal SSS, a physical broadcast channel PBCH, and a demodulation reference signal DMRS for the PBCH, and the SSB occupies 4 consecutive orthogonal frequency division multiplexing OFDM symbols or 3 consecutive OFDM symbols;

a sending module 62, electrically connected to the first determining module 61, configured to send the SSB using the time domain resource.

By the above apparatus, the access network device in the embodiment of the present disclosure may determine a time domain resource for sending a synchronization signal block SSB, where the SSB occupies 4 consecutive OFDM symbols or 3 consecutive OFDM symbols, and send the SSB by using the time domain resource, so that a terminal may obtain downlink synchronization information to perform downlink synchronization, and the SSB in the embodiment of the present disclosure occupies 4 OFDM symbols or 3 OFDM symbols, which may meet the requirement of 5G NR, and may implement sending of the SSB in each frequency band, reduce overhead, and enhance environmental adaptability and flexibility.

It should be noted that the information sending apparatus is an apparatus item corresponding to the information sending method, and for a specific description, reference is made to the previous description of the information sending method, which is not described herein again.

Referring to fig. 8, fig. 8 is a block diagram of an information receiving apparatus according to an embodiment of the present disclosure.

The apparatus may be applied to a terminal device, and as shown in fig. 8, the transposing includes:

a second determining module 63, configured to determine time domain resources for receiving a synchronization signal block SSB, where the SSB includes a primary synchronization signal PSS, a secondary synchronization signal SSS, a physical broadcast channel PBCH, and a demodulation reference signal DMRS for the PBCH, and the SSB occupies 4 consecutive orthogonal frequency division multiplexing OFDM symbols or 3 consecutive OFDM symbols;

a receiving module 64, electrically connected to the second determining module 63, configured to receive the SSB by using the time domain resource.

Through the above apparatus, the terminal device of the embodiment of the present disclosure may determine a time domain resource for sending a synchronization signal block SSB, where the SSB occupies 4 consecutive OFDM symbols or 3 consecutive OFDM symbols, and receive the SSB using the time domain resource, and the terminal device may obtain downlink synchronization information according to the received SSB to perform downlink synchronization.

It should be noted that the information receiving apparatus is an apparatus item corresponding to the information receiving method, and for the specific description, reference is made to the previous description of the information receiving method, which is not described herein again.

Referring to fig. 9, fig. 9 is a schematic structural diagram of a mobile communication system according to an embodiment of the present disclosure. The mobile communication system may be a Long Term Evolution (LTE) system, or may be a 5G system, where the 5G system is also called a New Radio (NR) system, or may be a next generation mobile communication technology system of 5G, and this embodiment is not limited thereto.

Optionally, the mobile communication system is suitable for different network architectures, including but not limited to a relay network architecture, a dual link architecture, a Vehicle to internet (V2X) architecture, and the like.

The mobile communication system includes: access network device 220 and terminal device 540.

The Access Network device 520 may be a Base Station (BS), which may also be referred to as a base station device, and is a device deployed in a Radio Access Network (RAN) to provide a wireless communication function. For example, the device providing the base station function in the 2G network includes a Base Transceiver Station (BTS), the device providing the base station function in the 3G network includes a node B (english: NodeB), the device providing the base station function in the 4G network includes an evolved node B (evolved NodeB, eNB), the device providing the base station function in the Wireless Local Area Network (WLAN) is an Access Point (AP), the device providing the base station function in the 5G system is a gNB, and an evolved node B (ng-eNB), the access network device 520 in the embodiment of the present disclosure further includes a device providing the base station function in a future new communication system, and the specific implementation manner of the access network device 520 in the embodiment of the present disclosure is not limited. The access network equipment may also include Home base stations (Home enbs, henbs), relays (Relay), Pico base stations Pico, etc.

The base station controller is a device for managing a base station, such as a Base Station Controller (BSC) in a 2G network, a Radio Network Controller (RNC) in a 3G network, and a device for controlling and managing a base station in a future new communication system.

A network side network (english: network) in the embodiment of the present disclosure is a communication network that provides a communication service for terminal device 540, and includes a base station of a radio access network, a base station controller of the radio access network, and a device on a core network side.

The Core Network may be an Evolved Packet Core (EPC), a 5G Core Network (english: 5G Core Network), or a new Core Network in a future communication system. The 5GCore Network is composed of a set of devices, and implements Access and Mobility Management functions (AMF) of functions such as Mobility Management, User Plane Functions (UPF) providing functions such as packet routing forwarding and Quality of Service (QoS) Management, Session Management Functions (SMF) providing functions such as Session Management, IP address allocation and Management, and the like. The EPC may be composed of an MME providing functions such as mobility management, Gateway selection, etc., a Serving Gateway (S-GW) providing functions such as packet forwarding, etc., and a PDN Gateway (P-GW) providing functions such as terminal address allocation, rate control, etc.

Access network device 520 and terminal device 540 establish a wireless connection over the air. Optionally, the wireless air interface is a wireless air interface based on a 5G standard, for example, the wireless air interface is NR; or, the wireless air interface may also be a wireless air interface based on a 5G next generation mobile communication network technology standard; alternatively, the wireless air interface may be a wireless air interface based on the 4G standard (LTE system). Access network device 520 may receive the uplink data sent by terminal device 540 via the wireless connection.

Terminal device 540 may refer to a device in data communication with access network device 520. Terminal device 540 may communicate with one or more core networks via a radio access network. Terminal equipment 540 may be various forms of User Equipment (UE), access terminal equipment, subscriber unit, subscriber station, Mobile Station (MS), remote station, remote terminal equipment, mobile device, user terminal equipment, wireless communication device, user agent, or user equipment. The terminal device 540 may also be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device with Wireless communication function, a computing device or other processing device connected to a Wireless modem, a vehicle-mounted device, a wearable device, a terminal device in a future 5G Network or a terminal device in a future evolved Public Land Mobile Network (PLMN), and the like, which is not limited in this embodiment. Terminal device 540 may receive downlink data sent by access network device 520 via a wireless connection with access network device 520.

It should be noted that, when the mobile communication system shown in fig. 9 adopts a 5G system or a 5G next generation mobile communication technology system, the above network elements may have different names in the 5G system or the 5G next generation mobile communication technology system, but have the same or similar functions, and the embodiment of the present disclosure is not limited thereto.

It should be noted that, in the mobile communication system shown in fig. 9, a plurality of access network devices 520 and/or a plurality of terminal devices 540 may be included, and fig. 9 illustrates one access network device 520 and one terminal device 540, but the embodiment of the present disclosure does not limit this.

Having described embodiments of the present disclosure, the foregoing description is intended to be exemplary, not exhaustive, and not limited to the disclosed embodiments. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen in order to best explain the principles of the embodiments, the practical application, or improvements made to the technology in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein.

Claims

1. An information sending method, characterized in that the method comprises:

transmitting the SSB using the time domain resource;

when the SSB occupies 3 continuous OFDM symbols, the SSS and the PSS respectively occupy one OFDM symbol, the PBCH and the DMRS for the PBCH occupy one OFDM symbol, and the subcarrier interval of the PSS and the SSS is 2 times of the subcarrier interval of the PBCH;

the determining time domain resources for transmitting the synchronization signal block SSB includes:

determining the time domain resource in SSB candidate time domain resources under the condition that the SSB occupies 4 continuous OFDM symbols;

in the case that the carrier frequency for transmitting the SSB is greater than 52.6GHz and the subcarrier spacing is 960KHz, the symbol index in which the first time domain symbol of the SSB candidate time domain resource is located in a half frame includes one or more of:

2. The method of claim 1, wherein in case that a carrier frequency for transmitting the SSB is greater than 52.6GHz and a subcarrier spacing is 240KHz, a symbol index of a first time-domain symbol of the SSB candidate time-domain resource located in a half frame comprises one or more of:

3. The method of claim 1, wherein in case that a carrier frequency for transmitting the SSB is greater than 52.6GHz and a subcarrier spacing is 480KHz, a symbol index of a first time domain symbol of the SSB candidate time domain resource located in a half frame comprises one or more of:

4. The method of claim 1, wherein frequency domain resources of the PSS and/or SSS comprise 12-22 Physical Resource Blocks (PRBs), and wherein the PBCH comprises 36-48 PRBs.

5. An information receiving method, characterized in that the method comprises:

receiving the SSB using the time domain resources;

when the SSB occupies 3 continuous OFDM symbols, the SSS and the PSS respectively occupy one OFDM symbol, and the PBCH and the DMRS for the PBCH occupy one OFDM symbol;

the subcarrier spacing of the PSS and the SSS is 2 times of the subcarrier spacing of the PBCH;

the determining time domain resources of the received synchronization signal block SSB includes:

in the case that the carrier frequency carrying the SSB is greater than 52.6GHz and the subcarrier spacing is 960KHz, the symbol index of the first time domain symbol of the SSB candidate time domain resource located in a half frame includes one or more of:

6. The method of claim 5, wherein in case that a carrier frequency carrying the SSB is greater than 52.6GHz and a subcarrier spacing is 240KHz, a symbol index of a first time domain symbol of the SSB candidate time domain resource located in a half frame comprises one or more of:

7. The method of claim 5, wherein in case that a carrier frequency carrying the SSB is greater than 52.6GHz and a subcarrier spacing is 480KHz, a symbol index of a first time domain symbol of the SSB candidate time domain resource located in a half frame comprises one or more of:

8. The method of claim 5, wherein frequency domain resources of the PSS and/or SSS comprise 12-22 Physical Resource Blocks (PRBs), and wherein the PBCH comprises 36-48 PRBs.

9. An information transmission apparatus, characterized in that the apparatus comprises:

a sending module, electrically connected to the first determining module, for sending the SSB using the time domain resource;

10. An information receiving apparatus, characterized in that the apparatus comprises:

a receiving module, electrically connected to the second determining module, for receiving the SSB using the time domain resource;

11. A computer device, characterized in that the computer device comprises: a processor; a memory for storing processor-executable instructions;

wherein the processor is configured to:

performing the method of any one of claims 1-4, or performing the method of any one of claims 5-8.

12. A non-transitory computer readable storage medium having stored thereon computer program instructions, wherein the computer program instructions, when executed by a processor, implement the method of any of claims 1 to 4 or the method of any of claims 5 to 8.