CN111669235B

CN111669235B - High-frequency discovery signal transmission method, device and system

Info

Publication number: CN111669235B
Application number: CN202010413816.2A
Authority: CN
Inventors: 刘晓峰; 杜滢; 闫志宇; 焦慧颖; 沈霞; 徐菲; 魏贵明
Original assignee: China Academy of Information and Communications Technology CAICT
Current assignee: China Academy of Information and Communications Technology CAICT
Priority date: 2020-05-15
Filing date: 2020-05-15
Publication date: 2022-04-22
Anticipated expiration: 2040-05-15
Also published as: CN111669235A

Abstract

The application discloses a high-frequency discovery signal transmission method, which is used for an unauthorized frequency band of a 5G system, and comprises the following steps: the SSB comprises first information, and the subcarrier interval of the SSB is a first subcarrier interval; the first information is used for indicating the subcarrier spacing of the PDCCH and the PDSCH associated with the SSB, namely the second subcarrier spacing; the first information is A bits for indicating that B is more than or equal to 2^AA second subcarrier spacing. The application also comprises the terminal equipment, the network equipment and the system using the method. The method and the device solve the problem of how to realize discovery signal transmission in the high frequency band, can be used in the high frequency band above 6GHz, and particularly can provide better access performance for NR-based unauthorized frequency band access equipment in the unauthorized frequency band above 6 GHz.

Description

High-frequency discovery signal transmission method, device and system

Technical Field

The present application relates to the field of mobile communications technologies, and in particular, to a method, a device, and a system for transmitting a high frequency discovery signal.

Background

The 5G new air interface (NR) has completed both versions R15 and R16, supporting up to 52.6GHz according to the current version. According to the initial vision of 5G, the design of 5 GNRs needs to support frequency usage of 100 GHz. In higher frequency bands, it is desirable to consider supporting larger bandwidths while overcoming the adverse effects of large path loss, and therefore to enhance existing NR designs.

Currently, NR already supports a downlink data shared channel (PDSCH) and a downlink control channel (PDCCH) at several subcarrier intervals, such as 15kHz, 30kHz, 60kHz, 120kHz, and the like. Compared with the prior art, the frequency band with the bandwidth of more than 52.6GHz is wider, a large number of unauthorized frequency bands exist, the design of adopting larger subcarrier spacing and considering unauthorized access needs to be considered, and when the larger subcarrier spacing and the characteristics of the unauthorized frequency bands need to be considered, series related configuration and messages need to be redesigned. Currently, in NR 15, a design of 5 kinds of synchronization signal broadcast data blocks (SS/PBCH blocks, abbreviated as SSBs in this application) have been supported, and the supported subcarrier intervals are 15kHz, 30kHz, 120kHz, and 240 kHz. In the NRR16 version, two SSB designs are defined for 15kHz, 30kHz subcarrier spacing for unlicensed bands, with no established technical standard above the 6GHz band. The present invention provides an SSB and associated discovery signal transmission method and apparatus that can support a larger subcarrier spacing in the high frequency band.

Disclosure of Invention

The application provides a high-frequency discovery signal transmission method, equipment and system, which solve the problem of how to realize discovery signal transmission in a high-frequency band. The scheme of the application can be used in a high-frequency band above 6GHz, especially in an unauthorized frequency band above 6GHz, and can provide better access performance for NR-based unauthorized frequency band access equipment.

In a first aspect, an embodiment of the present application provides a high frequency discovery signal transmission method, which is used for an unlicensed frequency band of a 5G system, and includes the following steps: the SSB contains first information;

the sub-carrier interval of the SSB is a first sub-carrier interval;

the first information is used for indicating the subcarrier spacing of the PDCCH and the PDSCH associated with the SSB, namely the second subcarrier spacing;

the first information is A bits for indicating that B is more than or equal to 2^AA second subcarrier spacing.

Further, the relationship between the second subcarrier spacing C and the first subcarrier spacing D is: and C is D/k, wherein k is 1,2 and 4.

Preferably, when a is 1, the first information is used to indicate any 2 of k values for any one first subcarrier interval D.

Preferably, a is 1, and B is 2, and the first information is used to indicate preset 2 second subcarrier spacing values. Further preferably, a is 2, and the first information is used to indicate preset 4 second subcarrier spacing values.

Preferably, when the first subcarrier spacing and the second subcarrier spacing are different, the multiplexing mode of the SSB and the associated PDCCH is as follows: the multiplexing mode is as follows: the first multiplexing mode is non-overlapping in time domain, overlapping in frequency domain, or the second multiplexing mode is: the frequency domain and the time domain are not overlapped.

Preferably, in the method according to any embodiment of the present application, the PDSCH associated with the SSB is a PDSCH carrying RMSI, a PDSCH at initial access, or a PDSCH broadcasting system messages; and the PDCCH associated with the SSB is CORESET used for scheduling the PDSCH carrying the RMSI.

Preferably, in the method according to any one of the embodiments of the present application, the PDSCH carrying higher layer signaling includes BWP configuration information, and the configuration information includes second information used for indicating a subcarrier interval of the BWP that is not initially accessed.

In a second aspect, the present application further provides a network device, configured to send the SSB, and PDCCH information and PDSCH information associated with the SSB, in the method according to any of the embodiments of the first aspect of the present application.

Preferably, the present application proposes a network device, characterized by comprising: memory, a processor and a computer program stored on the memory and executable on the processor, the computer program, when executed by the processor, implementing the steps of the method according to any of the embodiments of the first aspect of the application.

In a third aspect, the present application further provides a terminal device, configured to receive the SSB, and PDCCH information and PDSCH information associated with the SSB, where the method is described in any embodiment of the first aspect of the present application.

Preferably, the present application proposes a terminal device, including: memory, a processor and a computer program stored on the memory and executable on the processor, the computer program, when executed by the processor, implementing the steps of the method according to any of the embodiments of the first aspect of the application.

In a fourth aspect, the present application also proposes a computer-readable medium on which a computer program is stored, which computer program, when being executed by a processor, carries out the steps of the method according to any one of the embodiments of the present application.

In a fifth aspect, the present application further provides a mobile communication system, which includes at least 1 embodiment of any terminal device in the present application and/or at least 1 embodiment of any network device in the present application.

The embodiment of the application adopts at least one technical scheme which can achieve the following beneficial effects:

the signal transmission method, the device and the communication system provided by the invention can well match the characteristics of high frequency and large bandwidth and the existence of authorized and unauthorized frequency spectrums, particularly the condition that more than 52.6GHz frequency band needs to use multiple subcarrier intervals to match different services and different bandwidth usage. When LBT technology is used for high-bandwidth access, the invention can effectively use different sub-carrier wave intervals to utilize high-frequency large-bandwidth resources on the basis of ensuring fair coexistence with other systems.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

FIG. 1 is a schematic diagram of a communication system configuration and signaling configuration;

FIG. 2 is a flow chart of an embodiment of a method of the present application;

FIG. 3 is a SSB transmission pattern at 240kHz subcarrier spacing;

FIG. 4 is a SSB enhanced transmit pattern at 240kHz subcarrier spacing;

FIG. 5 is a schematic diagram of the multiplexing mode of SSB and CORESET 0;

FIG. 6 is a flow chart of an embodiment of a method of the present application for a network device;

FIG. 7 is a flowchart of an embodiment of a method of the present application for a terminal device;

FIG. 8 is a schematic diagram of an embodiment of a network device;

FIG. 9 is a schematic diagram of an embodiment of a terminal device;

fig. 10 is a schematic structural diagram of a network device according to another embodiment of the present invention;

fig. 11 is a block diagram of a terminal device of another embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be described in detail and completely with reference to the following specific embodiments of the present application and the accompanying drawings. It should be apparent that the described embodiments are only some of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The technical solutions provided by the embodiments of the present application are described in detail below with reference to the accompanying drawings.

Fig. 1 is a schematic diagram of a communication system configuration and a signaling configuration.

Consider a communication system consisting of network devices and terminal devices, as in fig. 1. One network device can simultaneously transmit and receive data to a plurality of terminal devices. The network device includes a network data unit and a network control unit. The terminal device includes a terminal data unit and a terminal control unit. The network data unit and the terminal data unit transmit data through a downlink data shared channel (PDSCH) and an uplink data shared channel (PUSCH). The network control unit and the terminal control unit exchange control information through a synchronization and broadcast channel (SSB) PDCCH (PDCCH), an uplink access channel (PRACH) and a control channel (PUCCH). The SSB sends the synchronizing signal and the broadcast information, and the terminal control unit receives the SSB to synchronize and acquire the basic system information. The PDCCH transmits Downlink Control Information (DCI) and performs specific transmission format-related contents of the PDSCH, PUSCH, and PUCCH. After the data of the terminal data unit is received, the terminal control unit initiates access based on PRACH to the network equipment according to the control information sent by the network control unit and the data receiving condition of the terminal data unit, or feeds back whether the data correctly receives ACK/NACK information, or performs terminalAnd sending data from the terminal to the network. The basic time transmission unit in the system is a symbol, and 14 symbols form a time slot. A time slot of length 1/2^KAnd ms, where K is a positive integer and corresponds to different subcarrier intervals, respectively, and for example, when K is 0,1,2,3, and 4, the subcarrier intervals correspond to 15kHz, 30kHz, 60kHz, 120kHz, and 240 kHz.

In the current standard, SSB is supported to use 120kHz and 240kHz subcarrier spacing at 6-52.6 GHz, and related channels carrying residual minimum information (RMSI), such as PDSCH (system information block1) like SIB1, PDCCH (i.e. CORESET for indicating RMSI) related to SSB, PDCCH/PDSCH/PUCCH/PUSCH/PRACH, etc. for uplink and downlink data transmission use 60kHz and 120kHz subcarrier spacing.

Unless otherwise specified, the PDSCH of the present application refers to the PDSCH associated with SSB, also denoted RMSI PDSCH, and is a PDSCH carrying RMSI; the PDCCH in the present application refers to a PDCCH associated with an SSB, and is also referred to as RMSI CORESET, CORESET0, or "CORESET indicated by RMSI PDSCH".

The SSB contains an indication of the subcarrier spacing for PDCCH and RMSI PDSCH, and the 1 bit in the frequency band above 6GHz indicates 60kHz or 120 kHz. And the subcarrier spacing of the remaining uplink and downlink channels may be obtained in an RMSI message or a higher layer's configuration for wideband part (BWP).

As frequencies increase, the continuously available frequencies increase, and the bandwidth supported by a single BWP also needs to increase accordingly. The manner of supporting larger BWP may employ more Resource Blocks (RBs), or increase the subcarrier spacing. Especially in the frequency band above 52.6GHz, the bandwidth is often above 1 GHz. Under the current limitation of the maximum number of RBs, increasing the interval of the supporting subcarriers is a very urgent requirement. Considering the characteristic that the NR subcarrier spacing is based on 15kHz and extends to the power of 2, not only the 240kHz subcarrier spacing needs to be considered. Under the limit of maximum NR 275 RBs, a subcarrier spacing of 480kHz needs to be considered to support a single carrier bandwidth above 1 GHz.

In all aspects, the supported subcarrier intervals are more diversified in order to meet various bandwidth and various service requirements at higher frequencies. The invention provides a method, equipment and a system for using different parameter configurations in a high frequency band, which can well use higher frequency resources.

Fig. 2 is a flow chart of an embodiment of the method of the present application.

The embodiment of the application provides a high-frequency discovery signal transmission method, which is used for an unauthorized frequency band of a 5G system and comprises the following steps:

step 101, determining subcarrier intervals of PDCCH and PDSCH associated with SSB, and generating first information;

the sub-carrier spacing of the SSB is a first sub-carrier spacing. The SSB comprises first information, wherein the first information is used for indicating the subcarrier spacing of the PDCCH and the PDSCH associated with the SSB, namely the second subcarrier spacing;

Further, the relationship between the second subcarrier spacing C and the first subcarrier spacing D is: and C is D/k, wherein k is 1,2 and 4. The examples are as described in examples 1 to 2.

Preferably, when a is 1, the first information is used to indicate any 2 of k values for any one first subcarrier interval D, as shown in embodiment 2, and can be used to generate B>2^AA second subcarrier spacing value.

Preferably, a is 1 and B is 2, and the first information is used to indicate preset 2 second subcarrier spacing values, as in embodiment 3. Further preferably, a is 2, and the first information is used to indicate preset 4 second subcarrier spacing values, as in embodiment 4.

The information of the SSB also includes an index of the SSB (i ═ 0 to 63).

Step 102, determining an SSB and associated PDCCH multiplexing mode;

Step 103, generating a PDCCH associated with SSB;

and the PDCCH associated with the SSB is RMSI CORESET and is used for scheduling the PDSCH carrying the RMSI.

Step 104, generating a PDSCH associated with the SSB, wherein the PDSCH comprises second information;

preferably, in the method according to any embodiment of the present application, the PDSCH associated with the SSB is a PDSCH carrying RMSI, a PDSCH at initial access, or a PDSCH broadcasting system messages;

Through the methods of steps 101-104, after the LBT is successful, the network device sends the SSB, the associated RMSI CORESET and RMSI PDSCH. The SSB sent, and the associated RMSI CORESET and RMSI PDSCH earliest start time, needs to be after LBT success, and cannot collide with LBT time. Wherein the sending position of the SSB is the preset time position given by the present invention. The SSB sent at a preset time position comprises first information, wherein the first information is used for indicating the PDSCH carrying RMSI related to the SSB, indicating RMSI PDSCH CORESET, PDSCH during initial access and the sub-carrier interval of PDSCH broadcasting system information, and the length of the first information is A bits; the SSB also includes information indicating the SSB index. RMSI CORESET gives RMSI PDSCH configuration information. The terminal receives the SSB, the associated RMSI CORESET and RMSI PDSCH to obtain the basic information of the access system. The network device configures the sub-carrier interval of the non-initial access BWP for the terminal through the PDSCH carrying the high-level information, and the terminal obtains more information of the non-initial access BWP by receiving the information.

Example 1

In this embodiment, the SSB has various subcarrier spacings (D values), such as 120kHz, 240kHz, and 480 kHz. There are many possibilities for the associated PDSCH carrying RMSI, CORESET indicating RMSI PDSCH, subcarrier spacing (C value) of PDSCH at initial access and PDSCH of broadcast system messages, such as 60kHz, 120kHz, 240kHz and 480 kHz. In this case, the first information length a is 1, representing two states of C ═ D and C ═ 0.5D.

Table 1 gives an example in which the first information state is 0 for C-D and 1 for C-0.5D. C is 120kHz, 240kHz and 480kHz, and D is 60kHz, 120kHz, 240kHz and 480 kHz. The indication of 1 bit of the first information can realize 6 kinds of indications of combinations of SSB subcarrier spacing and SS/PBCH bloc-associated PDSCH carrying RMSI, CORESET indicating RMSI PDSCH, PDSCH at initial access and PDSCH subcarrier spacing of a broadcast system message, and provides a greater flexibility compared with the mode of indicating two kinds of direct subcarrier spacing by 1 bit directly in the current standard [38.331 ].

Table 1, when a is 1, C is D, and C is 0.5D, the subcarrier spacing indication examples of RMSI CORESET and PDSCH are shown

According to the 6 subcarrier spacing combinations given in table 1, the current standard has only <120kHz,120kHz >, <120kHz, 60kHz >, <240kHz,120kHz > several < C, D > combinations at high frequency (FR2), and SSB has only two location distributions for licensed bands of 120kHz and 240 kHz. To meet the requirements of higher frequencies, larger bandwidths and unlicensed spectrum deployments. Especially for 52.6GHz-71GHz, a large number of continuous unlicensed spectrums are distributed, and the bandwidth is also more than 5 GHz. To support the deployment of these bands, it is necessary to support higher subcarrier spacing combinations.

For introducing more subcarrier spacing for higher frequency bands, there may be multiple support modes in the standard. One way is to introduce the definition of FR3(Frequency Range 3), e.g. FR3 is 52.6GHz to 71 GHz. Thus, the current parameter subanticrierSpacingCommon can be multiplexed without introducing extra bits into the existing MIB message in the standard. As is clear in the interpretation of subanticierSpacingCommon: if the terminal acquires carrier frequencies within FR3, then 0 represents that the SSB and associated RMSICORESET sub-carrier spacing are the same, and 1 represents that the SSB sub-carrier spacing is 2 times the associated RMSI CORESET sub-carrier spacing. Without introducing the concept of FR3, a supplementary explanation of the current subcarriersspacingmmon is also possible, as is clear from the interpretation of subcarriersspacingmmon: if the terminal is outside the carrier frequencies FR1 and FR2, then 0 represents the SSB and associated RMSI CORESET sub-carrier spacing is the same, and 1 represents the SSB sub-carrier spacing is 2 times the associated RMSI CORESET sub-carrier spacing.

When the SSB is added to the design of the preselected locations for 120kHz, 240kHz, and 480kHz equivalent subcarrier spacing, the corresponding RMSI CORESET and RMSI PDSCH equivalent subcarrier spacing needs to be considered. One possibility is that the SSBs have different pre-selected location designs at the same subcarrier spacing.

Fig. 3 is a SSB transmission pattern at 240kHz subcarrier spacing, e.g., the current preselected location of the SSB at 240kHz subcarrier spacing is shown in fig. 3.

Fig. 4 is an SSB enhanced transmit pattern at 240kHz subcarrier spacing. When a new design of SSB at a subcarrier spacing of 240kHz is introduced, as shown in fig. 4.

The pattern shown in fig. 3 supports SSBs and corresponding RMSI CORESET and RMSI PDSCH subcarrier spacing of <240kHz,120kHz >, while the SSB transmission pattern shown in fig. 4 is specific to SSBs and corresponding RMSI CORESET and RMSI PDSCH subcarrier spacing of 240 kHz. After the terminal receives the SSB and the first information, it can know whether the network device uses the transmission scheme of pattern 3 or pattern 4 according to the subcarrier interval indicated by the first information. In conjunction with the SSB index in the SSB, the particular slot and symbol position of the received SSB may be determined.

It should be noted that, in the data structure shown in fig. 3 to 4, in the bar 1 in fig. 3 to 4, each square indicates a time slot, and different numbers of time slots are included in the half-frame duration (5m), which is due to the different time slot durations under different subcarrier spacing conditions. In the bars 2 to 4 of fig. 3 and 2 of fig. 4, the expansion represents 14 characters in each time slot, i.e., 0 to 13 characters, in which the squares filled with the gray scale represent the positions for SSB. The same chroma character indicates the position of 1 SSB, and each 1 SSB occupies 4 consecutive characters. And the interval value of the sub-carrier wave in the front of the 2 nd to 4 th horizontal bars is marked.

Fig. 5 is a schematic diagram of the multiplexing mode of SSB and CORESET 0.

In this application, preferably, the multiplexing method of the SSB and the associated PDCCH is as follows: the multiplexing mode is as follows: the first multiplexing mode is non-overlapping in time domain, overlapping in frequency domain, or the second multiplexing mode is: the frequency domain and the time domain are not overlapped. The scheme of the application does not support a multiplexing mode III, namely time domain overlapping and frequency domain non-overlapping.

When the type of SSB is added, the multiplexing relationship between SSB and the corresponding RMSI CORESET and RMSI PDSCH is also considered. According to the current standard design, three multiplexing modes between the SSB and the corresponding RMSI CORESET and RMSI PDSCH are supported, as shown in fig. 5. When the SSB and corresponding RMSI CORESET and RMSI PDSCH use the same subcarrier spacing, the current multiplexing scheme can be used to better meet the design requirements. When the SSB and the corresponding RMSI CORESET and RMSI PDSCH use different subcarrier spacings, the first multiplexing scheme is difficult to meet the design requirements, and the first multiplexing scheme needs to be considered in combination with the second multiplexing scheme or the third multiplexing scheme. When considering more multiplexing modes, it is necessary to design the information of the RMSI CORESET corresponding to the SSB, for example, the first multiplexing mode may multiplex the current RMSI CORESET configuration, and the second multiplexing mode needs to be enhanced. Table 2 shows a design of SSB and corresponding RMSI CORESET multiplexing mode two at <240kHz,120kHz > or <480kHz,240kHz > subcarrier spacing.

TABLE 2 SSB and RMSI CORESET <480kHz,240kHz > reuse pattern 2, PDCCH search space configuration associated with RMSI CORESET above 6GHz

Wherein the SFN is_cAnd n_cIs the frame number and slot number, SFN, in which Coreset0 is located_SSB，iAnd n_SSB,iIs the frame number and slot number of the ith SSB.

After the terminal receives the SSB and the RMSI and obtains the BWP-related configuration for initial access, it needs to further obtain other BWP-related configurations (e.g., BWP-related information in ServingCellConfig), especially the second information configuration. The current standard for BWP configuration includes the second information (e.g. using subcarrierspating), which also needs to be extended when more subcarrier spacing is introduced. The extension can be directly defined by FR3 and the subcarrier spacing supported by FR3, such as 120kHz, 240kHz and 480 kHz.

Example 2

In this embodiment, the SSB has various subcarrier spacings (D values), such as 120kHz, 240kHz, and 480 kHz. There are many possibilities for the associated PDSCH carrying RMSI, CORESET indicating RMSI PDSCH, subcarrier spacing (C value) of PDSCH at initial access and PDSCH of broadcast system messages, such as 60kHz, 120kHz, 240kHz and 480 kHz. In this case, the first information length a is 1, and the subcarrier spacing and the associated RMSI CORESET and RMSI PDSCH for each SSB are independently specified for the representative state.

Table 3 gives an example that for a subcarrier spacing of SSB 120kHz, the first information state 0 represents C-D, and state 1 represents C-0.5D; for a subcarrier spacing of SSB 240kHz, the first information state 0 represents C-0.5D, and state 1 represents C-0.25D; for a sub-carrier spacing of SSB 480kHz, the first information state 0 represents C-D and state 1 represents C-0.25D.

Table 3, a-1, example of independent specification of subcarrier spacing and associated RMSI CORESET and RMSI PDSCH for representative states for each SSB

The other parts of example 2 were carried out in the same manner as in example 1.

Example 3

In this embodiment, the SSB has various subcarrier spacings (D values), such as 120kHz, 240kHz, and 480 kHz. There are two possibilities for the associated subcarrier spacing (C value) of PDSCH carrying RMSI, CORESET indicating RMSI PDSCH, PDSCH at initial access, and PDSCH of broadcast system messages, such as 120kHz and 240kHz, or 240kHz and 480 kHz. In this case, the first information length a is 1, and the two states directly correspond to the subcarrier interval to be indicated.

When the two subcarrier spacings indicated by the first information are not 60kHz and 120kHz, the standard also needs to consider additional support ways, such as the way FR3 is introduced in embodiment 1, to illustrate the two subcarrier spacings associated with FR 3. Without introducing the concept of FR3, two subcarrier spacings are specified separately directly for carriers that are not within the current FR1 and FR 2.

When the two subcarrier intervals indicated by the first information are still 60kHz and 120kHz, SSB may have various combinations.

The other portions of example 3 were carried out in the same manner as in example 1.

Example 4

In this embodiment, the SSB has various subcarrier spacings (D values), such as 120kHz, 240kHz, and 480 kHz. There are four possibilities for the associated PDSCH carrying RMSI, CORESET indicating RMSI PDSCH, subcarrier spacing (C value) of PDSCH at initial access and PDSCH of broadcast system messages, such as 60kHz, 120kHz, 240kHz and 480 kHz. In this case, the first information length a is 2, and the four states directly correspond to the subcarrier interval that needs to be indicated.

At this time, the subanticriersspacincommon with 1 bit in the MIB information in the current standard needs to be extended to 2 bits, and then four states are indicated.

The other portions of example 4 were carried out in the same manner as in example 1.

Fig. 6 is a flowchart of an embodiment of a method of the present application for a network device.

Step 201, the network device performs an LBT process;

the LBT referred to in this application includes different LBT modalities. Specifically, Cat2 LBT (LBT grade 2) and Cat4 LBT (LBT grade 4) are most commonly used. Cat2 LBT listens to the current channel once 16/25us before sending data Cat4 LBT listens for two parts before sending data, the first part is a definite single listen, the second part is a circulating multiple listen, the concrete process can refer to the current standard, such as 3GPP TR 37.213.

Step 202, the network equipment determines the subcarrier interval of the PDSCH and the PDCCH and sends first information;

the method comprises the steps that after the network equipment passes through LBT, a synchronous signal/physical broadcast block (SSB) is sent, the SSB has a plurality of preset time positions in a semi-frame, and the actual sending time position of the SSB is the preset time position; the SSB comprises first information used for indicating the PDSCH carrying RMSI related to the SSB, indicating the CORESET of RMSI PDSCH, and the subcarrier spacing of the PDSCH during initial access and the PDSCH broadcasting system information; assuming that the first information is A bit, A is a positive integer greater than or equal to 1, and assuming that the subcarrier spacing number indicated by the first information is B, B is greater than or equal to 2^A(ii) a Information indicating an index of the SSB is also included in the SSB.

Step 203, the network device determines the multiplexing mode of the SSB and the PDCCH;

when C ≠ D, the SSB and CORESET of the indication RMSI PDSCH support at least two multiplexing modes.

Step 204, the network device sends a PDCCH associated with the SSB;

step 205, the network device sends the PDSCH associated with the SSB, including the second information;

the network device configures the terminal with BWP related information containing second information through the PDSCH carrying higher layer information, where the second information is a subcarrier interval of non-initial access BWP.

Fig. 7 is a flowchart of an embodiment of a method of the present application for a terminal device.

Step 301, the terminal device receives the SSB to obtain first information;

the terminal receives the SSB; receiving that an actual time location of the SSB is a preset time location; the SSB comprises first information, wherein the first information is used for indicating the SSB-associated PDSCH carrying RMSI, indicating RMSI PDSCH CORESET, PDSCH during initial access and PDSCH of broadcast system information, and the length of the first information is A bits; information indicating an index of the SSB is also included in the SSB.

Step 302, the terminal equipment determines all the preselected positions of the SSBs;

the network equipment can have a plurality of modes of sending SSB pre-selection positions under the same subcarrier interval; the terminal can obtain the first subcarrier spacing C, the first information and the SSB index according to the received SSB, and the terminal can learn all SSB preselection positions sent by the network device according to the information.

Step 303, the terminal equipment receives the associated PDCCH according to the position of the SSB;

and the terminal obtains the preselected positions of all the SSBs according to the received SSBs, determines the second subcarrier interval and receives the RMSI CORESET associated with the SSBs.

And step 304, the terminal equipment receives the associated PDSCH according to the PDCCH to obtain second information.

And the terminal receives the PDSCH carrying the second information to obtain the subcarrier interval of the non-initial access BWP.

Fig. 8 is a schematic diagram of an embodiment of a network device.

An embodiment of the present application further provides a network device, which uses the method according to any of the embodiments of the present application, and a network device, which is used in the method according to any of the embodiments of the first aspect of the present application. The network equipment performs LBT, determines a preselected position of an SSB, determines a preselected position of a PDCCH, and transmits the SSB and the PDCCH and the PDSCH associated with the SSB.

In order to implement the foregoing technical solution, the network device 400 provided in the present application includes a network sending module 401, a network determining module 402, and a network receiving module 403.

The network sending module is used for sending the SSB after the LBT is passed, the SSB has a plurality of preset time positions in a half frame, and the actual sending time position of the SSB is the preset time position; the SSB comprises first information used for indicating the PDSCH carrying RMSI related to the SSB, indicating the CORESET of RMSI PDSCH, and the subcarrier spacing of the PDSCH during initial access and the PDSCH broadcasting system information; assuming that the first information is A bit, A is a positive integer greater than or equal to 1, and assuming that the first information indicates the subcarrierThe number of intervals is B, B is greater than or equal to 2^AThe SSB also contains information indicating the index of the SSB; further, the network sending module is further configured to transmit the RMSI core associated with the SSB after passing LBT; further, the network sending module is further configured to transmit the PDSCH containing the second information.

The network determining module is configured to determine a subcarrier interval of the PDCCH/PDSCH associated with the SSB, and generate first information and second information.

And the network receiving module is used for receiving uplink data or uplink signaling.

The specific method for implementing the functions of the network sending module, the network determining module, and the network receiving module is described in the embodiments of the methods shown in fig. 1 to 7, and will not be described herein again.

Fig. 9 is a schematic diagram of an embodiment of a terminal device.

The present application further provides a terminal device, which uses the method according to any of the embodiments of the present application, for the method according to any of the embodiments of the first aspect of the present application. And the terminal equipment receives the SSB and PDCCH and PDSCH information associated with the SSB.

In order to implement the foregoing technical solution, the terminal device 500 provided in the present application includes a terminal sending module 501, a terminal determining module 502, and a terminal receiving module 503.

The terminal receiving module is configured to receive an SSB, and further, the terminal receiving module receives that an actual time position of the SSB is a preset time position; the SSB comprises first information, which is used for indicating the SSB-associated PDSCH carrying RMSI, indicating RMSI PDSCH CORESET, PDSCH during initial access and PDSCH of broadcast system information, and the length of the SSB is A bits; information indicating an index of the SSB is also included in the SSB. The terminal receiving module is further configured to receive the PDCCH and the PDSCH associated with the SSB.

And the terminal determining module is used for obtaining the preselected positions of all the SSBs according to the received SSBs. And the terminal determining module is further used for determining a second subcarrier interval according to the first subcarrier interval and the first information. And the terminal determining module is further configured to obtain a subcarrier interval of the non-initial access BWP according to the second information.

And the terminal sending module is used for sending uplink data or uplink signaling.

The specific method for implementing the functions of the terminal sending module, the terminal determining module and the terminal receiving module is described in the embodiments of the methods shown in fig. 1 to 7, and is not described herein again.

The terminal equipment can be mobile terminal equipment.

Fig. 10 is a schematic structural diagram of a network device according to another embodiment of the present invention. The network device 600 comprises a processor 601, a wireless interface 602, a memory 603. Wherein the wireless interface may be a plurality of components, i.e. including a transmitter and a receiver, providing means for communicating with various other apparatus over a transmission medium. The wireless interface implements a communication function with the terminal device, and processes wireless signals through the receiving and transmitting devices, and data carried by the signals are communicated with the memory or the processor through the internal bus structure. The memory 603 contains a computer program that executes any of the embodiments of the present application of fig. 1-7, and the computer program runs or changes on the processor 601. When the memory, processor, wireless interface circuit are connected through a bus system. The bus system includes a data bus, a power bus, a control bus, and a status signal bus, which are not described herein.

Fig. 11 is a block diagram of a terminal device of another embodiment of the present invention. The terminal device 700 shown in the figure comprises at least one processor 701, a memory 702, a user interface 703 and at least one network interface 704. The various components in the terminal device 700 are coupled together by a bus system. A bus system is used to enable connection communication between these components. The bus system includes a data bus, a power bus, a control bus, and a status signal bus.

The user interface 703 may include a display, a keyboard, or a pointing device, such as a mouse, a trackball, a touch pad, or a touch screen, among others.

The memory 702 stores executable modules or data structures. The memory may have stored therein an operating system and an application program. The operating system includes various system programs, such as a framework layer, a core library layer, a driver layer, and the like, and is used for implementing various basic services and processing hardware-based tasks. The application programs include various application programs such as a media player, a browser, and the like for implementing various application services.

In the embodiment of the present invention, the memory 702 contains a computer program for executing any one of the embodiments of fig. 1 to 7 of the present application, and the computer program runs or changes on the processor 701.

The memory 702 contains a computer readable storage medium, and the processor 701 reads the information in the memory 702 and combines the hardware to complete the steps of the above-described method. In particular, the computer-readable storage medium has stored thereon a computer program which, when executed by the processor 701, performs the steps of the method embodiment as described above with reference to any one of the embodiments of fig. 1 to 7.

The processor 701 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the method of the present application may be implemented by hardware integrated logic circuits in the processor 701 or by instructions in the form of software. The processor 701 may be a general purpose processor, a digital signal processor, an application specific integrated circuit, an off-the-shelf programmable gate array or other programmable logic device, discrete gate or transistor logic, discrete hardware components. The various methods, steps and logic blocks disclosed in the embodiments of the present invention may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present invention may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor.

As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. In a typical configuration, the device of the present application includes one or more processors (CPUs), an input/output user interface, a network interface, and a memory.

Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.

The present application therefore also proposes a computer-readable medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the method according to any one of the embodiments of the present application. For example, the

memory

603, 702 of the present invention may include volatile memory in a computer readable medium, Random Access Memory (RAM) and/or nonvolatile memory such as Read Only Memory (ROM) or flash memory (FLASH RAM).

Computer-readable media, including both non-transitory and non-transitory, removable and non-removable media, may implement information storage by any method or technology. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), Static Random Access Memory (SRAM), Dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), Read Only Memory (ROM), Electrically Erasable Programmable Read Only Memory (EEPROM), flash memory or other memory technology, compact disc read only memory (CD-ROM), Digital Versatile Discs (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices, or any other non-transmission medium that can be used to store information that can be accessed by a computing device. As defined herein, computer readable media does not include transitory computer readable media such as modulated data signals and carrier waves.

Based on the embodiments of fig. 1 to 11, the present application further provides a mobile communication system, which includes at least 1 embodiment of any terminal device in the present application and/or at least 1 embodiment of any network device in the present application.

It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

The above description is only an example of the present application and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. A high frequency discovery signal transmission method is used for an unlicensed frequency band of a 5G system,

the SSB contains first information;

the sub-carrier interval of the SSB is a first sub-carrier interval;

the first information is A bits for indicating B>2^AA second subcarrier spacing;

the relationship between the second subcarrier spacing C and the first subcarrier spacing D is: c = D/k, wherein k =1,2, 4;

when a =1, the first information is used to indicate any 2 of k values for any one first subcarrier spacing D.

2. The method of claim 1,

when the first subcarrier interval and the second subcarrier interval are different, the multiplexing mode of the SSB and the associated PDCCH is as follows:

the time domain and the frequency domain are not overlapped, or the time domain and the frequency domain are not overlapped.

3. The method of claim 1 or 2,

the PDSCH associated with the SSB is a PDSCH carrying RMSI, a PDSCH during initial access or a PDSCH broadcasting system information;

and the PDCCH associated with the SSB is CORESET used for scheduling the PDSCH carrying the RMSI.

4. The method of claim 1 or 2,

the PDSCH carrying the higher layer signaling contains BWP configuration information, and the configuration information contains second information used for indicating the subcarrier interval of the BWP which is not initially accessed.

5. A network device for implementing the method of any one of claims 1 to 4, comprising a network sending module, a network determining module, and a network receiving module;

the network sending module is used for sending the SSB and the RMSI CORESET associated with the SSB;

the network determining module is configured to determine a subcarrier spacing of the PDCCH/PDSCH associated with the SSB;

6. A network device, comprising: memory, processor and computer program stored on the memory and executable on the processor, the computer program, when executed by the processor, implementing the steps of the method according to any one of claims 1 to 4.

7. A terminal device, for use in the method of any one of claims 1 to 4, comprising a terminal sending module, a terminal determining module, and a terminal receiving module;

the terminal receiving module is used for receiving the SSB;

the terminal determining module is used for obtaining all the preselected positions of the SSBs according to the received SSBs;

8. A terminal device, comprising: memory, processor and computer program stored on the memory and executable on the processor, the computer program, when executed by the processor, implementing the steps of the method according to any one of claims 1 to 4.

9. A mobile communication system comprising at least one network device according to any of claims 5 to 6 and at least one terminal device according to any of claims 7 to 8.

10. A computer-readable medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the method according to any one of claims 1 to 4.