CN110636630B

CN110636630B - Transmission method of system message, terminal equipment and network equipment

Info

Publication number: CN110636630B
Application number: CN201810652138.8A
Authority: CN
Inventors: 刘思綦; 纪子超; 吴凯
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2018-06-22
Filing date: 2018-06-22
Publication date: 2021-05-18
Anticipated expiration: 2038-06-22
Also published as: CN110636630A

Abstract

The invention discloses a transmission method of system messages, terminal equipment and network equipment, wherein the method comprises the following steps: receiving an SSB and a PDSCH; wherein the at least one scheduling parameter for the PDSCH is based on the SSB indication and/or predefined. In the embodiment of the invention, the scheduling parameter of the PDSCH or the scheduling parameter of the predefined PDSCH is indicated by the SSB, so that the PDSCH can be transmitted on the premise of not transmitting the PDCCH, the time required by transmitting the system message is shortened, and the access opportunity of the terminal equipment is improved.

Description

Transmission method of system message, terminal equipment and network equipment

Technical Field

The present invention relates to the field of communications, and in particular, to a method for transmitting a system message, a terminal device, and a network device.

Background

The NR grant (license) frequency band introduces the concept of Control Resource Set (CORESET), and there are multiple candidate positions in CORESET that can be used for transmitting Physical Downlink Control CHannel (PDCCH). And the user blindly detects the PDCCH in the CORESET configured by the base station.

In the NR sense frequency band, a PBCH (Physical broadcast channel) is carried in an SSB (SS/PBCH blocks, synchronization signal/Physical broadcast channel block, or synchronization signal block for short), and the PBCH is used to carry a system master information block MIB (master information block), which carries RMSI-PDCCH-configuration information (also referred to as PDCCHConfigSIB1 information). The first 4 bits (bit) of the RMSI-PDCCH-config helps the user to confirm information such as time domain duration, frequency domain bandwidth, frequency domain position occupied by the RMSI CORESET, and the last 4 bits indicate the configuration of Search Space of the type0PDCCH, so as to help the user to determine the time for monitoring the PDCCH, i.e., the position of the PDCCH monitoring window. A PDCCH for scheduling RMSI (remaining minimum system information, which may also be referred to as system information block 1, SIB1 for short) may be referred to as RMSI PDCCH; a PDCCH for scheduling OSI (other system information, generally referring to SIBs other than SIB1) may be referred to as an OSI PDCCH; a PDCCH for scheduling paging may be referred to as a paging PDCCH; in some cases, paging CORESET, OSI CORESET may multiplex RMSI CORESET.

In Licensed Assisted Access (LAA), before transmitting information, a transmitting node (base station or UE) needs to perform CCA (Clear Channel assessment)/eCCA (extended Clear Channel assessment) to listen to a Channel, that is, perform ED (Energy Detection), and when Energy is lower than a certain threshold, the Channel is determined to be empty, so that the transmitting node can start transmission. Since the unlicensed frequency band is shared by multiple technologies, this contention-based access method causes uncertainty of the available time of the channel. The fixed-location RS configuration in the NR is no longer applicable to the unlicensed band, because when the channel is available (available), the transmittable location of the RS may have been missed and cannot be transmitted, which may result in failure to normally perform the RS reception and various measurements and evaluations of the radio channel environment by the RS. After listening to the channel and determining to be empty, the duration of the UE sending the signal needs to be less than a maximum duration mcot (maximum channel allocation time).

Since the resources available to the base station (available) in some frequency domains are not fixed, the base station needs to contend for acquisition based on a certain monitoring mechanism. Under the existing mechanism of periodically transmitting the system message, the base station may not grab the corresponding resource for a long time, which results in missing the opportunity of transmitting the system message, and the terminal cannot access.

Disclosure of Invention

The embodiment of the invention aims to provide a system message transmission method, terminal equipment and network equipment, so as to shorten the time required for transmitting the system message and improve the access opportunity of a user.

In a first aspect, a method for transmitting a system message is provided, where the method includes:

receiving an SSB and a PDSCH;

wherein the at least one scheduling parameter for the PDSCH is based on the SSB indication and/or predefined.

In a second aspect, a terminal device is provided, which includes:

a receiving module which receives the SSB and the PDSCH;

In a third aspect, a terminal device is provided, the terminal device comprising a processor, a memory 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 the first aspect.

In a fourth aspect, a computer-readable storage medium is provided, 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 the first aspect.

In a fifth aspect, a method for transmitting a system message is provided, where the method includes:

transmitting the SSB and the PDSCH;

In one possible implementation of the fifth aspect, the SSB and the PDSCH are FDM on the frequency domain.

In a sixth aspect, a network device is provided, which includes:

a transmitting module for transmitting the SSB and the PDSCH;

In one possible implementation of the sixth aspect, the SSB and the PDSCH are FDM on a frequency domain.

In a seventh aspect, a network device is provided, which comprises a processor, a memory 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 the fifth aspect.

In an eighth aspect, a computer-readable storage medium is provided, characterized in that the computer-readable storage medium has stored thereon a computer program which, when executed by a processor, implements the steps of the method according to the fifth aspect.

In a ninth aspect, a method for transmitting a system message is provided, the method including:

receiving an SSB and a specified type of downlink signal;

wherein the SSB and the specified type of downlink signal are FDM in a frequency domain;

when the specified type downlink signal is a PDCCH, the PDCCH is used for indicating at least one scheduling parameter of a PDSCH;

when the specified type downlink signal is a PDSCH, at least one scheduling parameter of the PDSCH is indicated by a PDCCH sent by the last SSB in FDM on a frequency domain.

In a tenth aspect, there is provided a terminal device, including:

the receiving module is used for receiving the SSB and the specified type downlink signal;

In an eleventh aspect, a terminal device is provided, which comprises a processor, a memory and a computer program stored on the memory and being executable on the processor, which computer program, when executed by the processor, performs the steps of the method according to the ninth aspect.

In a twelfth aspect, a computer-readable storage medium is provided, characterized in that the computer-readable storage medium has stored thereon a computer program, which when executed by a processor implements the steps of the method according to the ninth aspect.

In a thirteenth aspect, a method for transmitting a system message is provided, where the method includes:

sending an SSB and a specified type downlink signal;

In a fourteenth aspect, a network device is provided, which includes:

the sending module is used for sending the SSB and the specified type downlink signal;

In a fifteenth aspect, a network device is provided, comprising a processor, a memory 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 the thirteenth aspect.

In a sixteenth aspect, a computer-readable storage medium is provided, characterized in that the computer-readable storage medium has stored thereon a computer program which, when executed by a processor, implements the steps of the method according to the thirteenth aspect.

The technical scheme of the embodiment of the invention at least can achieve the following beneficial effects:

on one hand, the scheduling parameters of the PDSCH and/or the scheduling parameters of the predefined PDSCH are indicated through the SSB, so that the PDSCH can be received on the premise of not receiving the PDCCH, the time required by system message transmission is shortened, and the access opportunity of the terminal equipment is improved;

on the other hand, by receiving the SSB and the PDCCH transmitted in FDM, or receiving the SSB and the PDSCH transmitted in FDM, and indicating at least one scheduling parameter of the PDSCH received subsequently with the PDCCH received previously, the time required for transmitting the system message can be shortened, and the access opportunity of the terminal device is improved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a flow chart of a system message transmission method according to an embodiment of the present invention.

Fig. 2 is a flow chart of a system message transmission method according to an embodiment of the present invention.

Fig. 3 is a flow chart of a system message transmission method according to an embodiment of the invention.

Fig. 4 is a flow chart of a system message transmission method according to an embodiment of the invention.

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

Fig. 6 is a schematic structural diagram of a network device according to an embodiment of the present invention.

Fig. 7 is a schematic structural diagram of a terminal device according to another embodiment of the present invention.

Fig. 8 is a schematic structural diagram of a network device according to another embodiment of the present invention.

Fig. 9 is a schematic structural diagram of a terminal device according to still another embodiment of the present invention.

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

Fig. 11 is a schematic time-frequency resource distribution diagram of an SSB according to an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. 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 invention.

The technical scheme of the invention can be applied to various communication systems, such as: global System for Mobile communications (GSM), Code Division Multiple Access (CDMA), Wideband Code Division Multiple Access (WCDMA), General Packet Radio Service (GPRS), Long Term Evolution (LTE), Long Term Evolution/enhanced Long Term Evolution (LTE-a), and nr new Radio.

Terminal devices, which may be referred to as User Equipments (UEs), also referred to as Mobile terminals (Mobile terminals), Mobile User Equipment (ms), etc., may communicate with one or more core networks via a Radio Access Network (e.g., RAN), and may be Mobile terminals, such as Mobile phones (or "cellular" phones) and computers having Mobile terminals, such as portable, pocket, hand-held, computer-included, or vehicle-mounted Mobile devices, which exchange language and/or data with the Radio Access Network.

The network device may be a Base Transceiver Station (BTS) in GSM or CDMA, a Base Station (NodeB) in WCDMA, an evolved Node B (eNB or e-NodeB) in LTE, and a 5G Base Station (gNB), and the present invention is not limited thereto, but for convenience of description, the following embodiments take the gNB as an example for description.

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

Fig. 1 is a flow chart of a system message transmission method according to an embodiment of the present invention. The method of fig. 1 is performed by a terminal device. The method can comprise the following steps:

110, receiving the SSB and the PDSCH; wherein the at least one scheduling parameter for the PDSCH is based on the SSB indication and/or predefined.

It should be understood that, in the embodiment of the present invention, when the SSB and the PDSCH are received on a spectrum, the spectrum may be a shared spectrum, such as an unlicensed spectrum. Of course, the use of the scheme of the embodiments of the present invention in licensed spectrum is not excluded.

It should be understood that the System message of the embodiment of the present invention may include RMSI, System Information (SI) other than RMSI, paging, PDSCH of msg2,4 in RACH procedure, etc.

It should be understood that, in the embodiment of the present invention, the PDSCH corresponds to the SSB. Specifically, for example, the PDSCH is transmitted in the same beam direction as the SSB, and so on.

It should be understood that in the embodiment of the present invention, all scheduling parameters of the PDSCH may be indicated based on SSB, or all scheduling parameters of the PDSCH may be predefined, or partial scheduling parameters of the PDSCH may be indicated based on SSB, and scheduling parameters of another part of the PDSCH may be predefined.

In the embodiment of the invention, the scheduling parameter of the PDSCH or the scheduling parameter of the predefined PDSCH is indicated through the SSB, so that the PDSCH can be received on the premise of not receiving the PDCCH, the time required by transmitting the system message is shortened, and the access opportunity of the terminal equipment is improved.

Optionally, in some embodiments, the SSB may explicitly indicate at least one scheduling parameter for the PDSCH. Specifically, the SSB may carry first indication information indicating at least one scheduling parameter of the PDSCH.

For example, SSB 1 carries two bits, bit 00 indicates that the shift duration of the PDSCH is T1, bit 01 indicates that the shift duration of the PDSCH is T2, bit 10 indicates that the shift duration of the PDSCH is T3, and so on.

Optionally, in some embodiments, the SSB may explicitly and implicitly jointly indicate at least one scheduling parameter for the PDSCH. Specifically, the SSB may carry second indication information, and at least one of all or part of bits of a specified parameter of the SSB and a related sequence in the SSB is jointly indicated with the second indication information.

It is understood that at least one of all or part of the bits of the specified parameters of the SSB and the related sequences in the SSB, for example, the first specified parameter of the SSB and the DMRS (Demodulation Reference Signal) sequence in the SSB, the first specified parameter of the SSB, part of the bits of the first specified parameter of the SSB and the DMRS sequence in the SSB, the PSS (Primary Synchronization Signal) sequence in the SSB, and so on.

For example, the SSB carries 1 bit, when the system frame number SFN of the SSB is even and the bit is 0, the offset duration of the PDSCH is T1, when the system frame number SFN of the SSB is even and the bit is 1, the offset duration of the PDSCH is T2, when the system frame number SFN of the SSB is odd and the bit is 0, the offset duration of the PDSCH is T3, and so on. At this time, the system frame number SFN of the SSB is a specified parameter.

For another example, the SSB carries 1 bit, and the bit and the low N bits of the identification of the SSB jointly indicate the frequency domain offset of the PDSCH, where N is not less than 1 and is not greater than an integer of the bit length occupied by the identification parameter of the SSB, and so on.

Optionally, in some embodiments, the SSB may implicitly indicate at least one scheduling parameter for the PDSCH. Specifically, at least one of all or part of bits of the designated parameter of the SSB and a related sequence in the SSB may have a mapping relationship with at least one scheduling parameter of the PDSCH.

For example, SSB i indicates RMSI PDSCH offset time O and duration D, i.e., the identification of SSB is mapped with RMSI PDSCH offset time O and duration D.

Optionally, in some embodiments, at least one scheduling parameter of the PDSCH is predefined. In particular, all scheduling parameters of PDSCH are predefined. For example, after the user receives and decodes SSB i, the user may attempt to receive RMSI PDSCH based on predefined scheduling parameters.

Of course, it should be understood that the above scheme of indicating the scheduling parameters of the PDSCH by SSB and the scheme of predefining the scheduling parameters of the PDSCH may also be used in combination. The network device may indicate a partial scheduling parameter of the PDSCH through the SSB and predefine another partial scheduling parameter of the PDSCH.

For example, SSB i indicates RMSI PDSCH offset time O and duration D, MCS and other parameters are predefined by the protocol, and after the user receives and decodes SSB i, the user attempts to receive RMSI PDSCH for duration D, considering the offset time O to be the starting point of RMSI PDSCH since a certain symbol of SSB i.

Furthermore, it should be understood that if the specified scheduling parameter of the PDSCH is predefined and is indicated by the SSB, the specified scheduling parameter value indicated by the SSB is taken as the specified scheduling parameter of the PDSCH.

Of course, it is to be understood that at least one of the above-described SSB related sequences includes at least one of:

a demodulation reference signal, DMRS, sequence of the SSB;

a primary synchronization signal, PSS, sequence in the SSB;

a secondary Synchronization SSS (Secondary Synchronization Signal) sequence in the SSB;

a scrambling sequence of a physical broadcast channel PBCH in the SSB;

a scrambling sequence of PSS in the SSB; and

scrambling sequence of SSS in the SSB.

The at least one specified parameter of the SSB includes at least one of:

an identification of the SSB;

a power difference between at least two of PSS, SSS, PBCH in the SSB;

a cell identity carried in the SSB;

receiving a period of the SSB;

a time offset of the SSB;

a frequency domain offset of the SSB;

the number of SSBs;

the number of repeated transmissions of the SSB;

frequency domain resource location of the SSB;

a time domain resource location of the SSB;

a physical resource mapping order of the SSBs;

a value configuration of the SSB;

at least two items of PSS, SSS and PBCH in the SSB are arranged in the time domain when TDM is time division multiplexed;

the permutation sequence of at least two items of PSS, SSS and PBCH in the SSB in frequency domain FDM;

a single frequency network system frame number SFN;

a field indication;

an indication of a frequency domain offset between the SSB and a resource grid (resource grid);

a cell barring access indication;

indicating same-frequency reselection;

a value configuration indication for a system message; and

DMRS location indication of system messages.

Furthermore, it should be understood that the scheduling parameters of the PDSCH include one or more of:

a hybrid automatic repeat request, HARQ, process indication for the PDSCH;

a redundancy version of the PDSCH;

an indication of whether the PDSCH is new data;

a mapping manner of the PDSCH;

a Modulation and Coding Scheme (MCS) of the PDSCH;

a transmission power control related parameter of the PDSCH;

a bandwidth of the PDSCH;

a frequency domain location of the PDSCH;

a time domain location of the PDSCH;

a time domain length of the PDSCH;

the number of DMRS in the PDSCH; and

a location of a DMRS in the PDSCH.

It should be understood that, in the above-listed specific parameters of the SSB, the Cell Identifier carried in the SSB may include at least one of PCI (Physical Cell ID), CGI (Cell Global Identifier). The SSB may include at least one of SCS (sub carrier spacing) and CP (Cyclic Prefix) in the numerical configuration; the number of the repeated sending of the SSBs may include the number of times of repeatedly sending the same SSB in the time domain and/or the number of frequency points of repeatedly sending the same SSB in the frequency domain; the mapping manner of the PDSCH, for example, mapping from subcarrier number or RB number or PDSCH transmission opportunity number from high to low, or mapping from low to high; the time domain position of the PDSCH may be a starting symbol of the PDSCH, or a symbol occupied by the PDSCH, etc. Similar to the other embodiments of the present invention with respect to the specified parameters mentioned above.

The transmission power control related parameters of the PDSCH listed above may include at least one of power control parameters ρ _ B, ρ _ a, power difference, number of antenna ports, reference signal power, and reference channel power. The reference channel may contain PBCH, SSS, PSS, CSI-RS, DMRS, etc. It should be understood that the transmission power control related parameters of PDSCH mentioned elsewhere in this application are similar and will not be described again.

Optionally, in some embodiments, the SSB and the PDSCH are TDM in the time domain.

It should be understood that, in general, the SSB and the PDSCH occupy different symbols in the spectral resources. Of course, the above approach is only one common approach.

Optionally, in some embodiments, the SSBs and the PDSCH are FDM on the frequency domain.

Specifically, for example, assume RMSI PDSCH starts with a particular symbol of SSB, and RMSI PDSCH and SSB FDM. After receiving and decoding SSBs i, the terminal device may consider RMSI PDSCH starting from a specific symbol of SSBs i, for example, the first symbol of SSBs i is RMSI PDSCH starting symbol, RMSI PDSCH is FDM and the same duration as SSBs i.

In this embodiment, the specific symbol may be predefined or SSB-indicated.

Optionally, in some embodiments, the SSB further carries third indication information, where the third indication information indicates a transmission mode identifier; wherein

And receiving the SSB and the PDSCH based on the transmission mode corresponding to the transmission mode identification indicated by the third indication information.

It should be understood that, in the solution of the embodiment of the present invention, the terminal device and the network device may transmit the system message based on a plurality of different transmission manners. In order to enable the terminal device to distinguish the manner in which the network device transmits the system message, the SSB may carry identification information of the transmission manner. For example, the transmission scheme of the embodiments shown in fig. 1 and fig. 2 may be labeled 00, the transmission scheme of the embodiments shown in fig. 3 and fig. 4 may be labeled 01, and so on.

Fig. 1 discusses a method for a terminal device to receive a system message. A method for a network device to send a system message will be described with reference to fig. 2.

Fig. 2 is a flow chart of a system message transmission method according to an embodiment of the present invention. The method of fig. 2 is performed by a network device. The method can comprise the following steps:

210, transmitting SSBs and PDSCH, wherein at least one scheduling parameter for the PDSCH is indicated and/or predefined based on the SSBs.

It should be understood that, in the embodiment of the present invention, when the SSB and the PDSCH are transmitted on a spectrum, the spectrum may be a shared spectrum, such as an unlicensed spectrum. Of course, the use of the scheme of the embodiments of the present invention in licensed spectrum is not excluded.

In the embodiment of the invention, the scheduling parameter of the PDSCH or the scheduling parameter of the predefined PDSCH is indicated by the SSB, so that the PDSCH can be transmitted on the premise of not transmitting the PDCCH, the time required by transmitting the system message is shortened, and the access opportunity of the terminal equipment is improved.

Optionally, in some embodiments, the SSB carries first indication information, where the first indication information indicates at least one scheduling parameter of the PDSCH.

Optionally, in other embodiments, the SSB carries second indication information, and at least one of all or part of bits of the specified parameter of the SSB and a related sequence in the SSB indicates the at least one scheduling parameter in combination with the second indication information.

Optionally, in other embodiments, at least one of all or part of bits of the specified parameter of the SSB and a related sequence in the SSB has a mapping relationship with at least one scheduling parameter of the PDSCH.

Optionally, in some embodiments, at least one scheduling parameter of the PDSCH is predefined. In particular, all scheduling parameters of PDSCH are predefined.

Optionally, in some embodiments, the relevant sequences in the SSB include at least one of:

a demodulation reference signal, DMRS, sequence in the SSB;

a primary synchronization signal, PSS, sequence in the SSB;

a Secondary Synchronization Signal (SSS) sequence in the SSB;

a scrambling sequence of a physical broadcast channel PBCH in the SSB;

a scrambling sequence of PSS in the SSB; and

scrambling sequence of SSS in the SSB.

Optionally, in some embodiments, the specified parameters of the SSB include at least one of:

an identification of the SSB;

a power difference between at least two of PSS, SSS, PBCH in the SSB;

a cell identity carried in the SSB;

receiving a period of the SSB;

a time offset of the SSB;

a frequency domain offset of the SSB;

the number of SSBs;

the number of repeated transmissions of the SSB;

frequency domain resource location of the SSB;

a time domain resource location of the SSB;

a physical resource mapping order of the SSBs;

a value configuration of the SSB;

at least two items of PSS, SSS and PBCH in the SSB are arranged in time domain in TDM mode;

at least two items of PSS, SSS and PBCH in the SSB are arranged in FDM on a frequency domain;

a system frame number SFN;

a field indication;

an indication of a frequency domain offset between the SSB and the resource grid;

a cell barring access indication;

indicating same-frequency reselection;

a value configuration indication for a system message; and

DMRS location indication of system messages.

Optionally, in some embodiments, the scheduling parameter includes one or more of:

a HARQ process indication for the PDSCH;

a redundancy version of the PDSCH;

an indication of whether the PDSCH is new data;

a mapping manner of the PDSCH;

an MCS for the PDSCH;

a transmission power control related parameter of the PDSCH;

a bandwidth of the PDSCH;

a frequency domain location of the PDSCH;

a time domain location of the PDSCH;

a time domain length of the PDSCH;

the number of DMRS in the PDSCH; and

a location of a DMRS in the PDSCH.

Optionally, in some embodiments, the SSB further carries third indication information, where the third indication information indicates a transmission mode identifier.

The Cell ID carried in the SSB may include at least one of PCI (Physical Cell ID) and CGI (Cell Global Identifier).

It should be understood that, in the solution of the embodiment of the present invention, the terminal device and the network device may transmit the system message based on a plurality of different transmission manners. In order to enable the terminal device to distinguish the manner in which the network device transmits the system message, the SSB may carry identification information of the transmission manner.

The method for sending the system message by the network device in the embodiment shown in fig. 2 may refer to the embodiment shown in fig. 1, and the embodiment of the present invention is not described herein again.

Fig. 3 is a flow chart of a system message transmission method according to an embodiment of the invention. The method of fig. 3 is performed by a terminal device. The method can comprise the following steps:

310, receiving an SSB and a specified type of downlink signal; wherein the SSB and the specified type of downlink signal are FDM in a frequency domain.

When the specified type downlink signal is a PDCCH, the PDCCH is used for indicating at least one scheduling parameter of a PDSCH; when the specified type downlink signal is a PDSCH, at least one scheduling parameter of the PDSCH is indicated by a PDCCH sent by the last SSB in FDM on a frequency domain.

It should be understood that, in the embodiment of the present invention, when receiving the SSB and the specified type of downlink signal on a spectrum, the spectrum may be a shared spectrum, such as an unlicensed spectrum. Of course, the use of the scheme of the embodiments of the present invention in licensed spectrum is not excluded.

It should be understood that, in the embodiment of the present invention, by receiving the SSB and the PDCCH transmitted in FDM, or receiving the SSB and the PDSCH transmitted in FDM, and indicating at least one scheduling parameter of a subsequently received PDSCH with a previously received PDCCH, time required for transmitting a system message may be shortened, and an access opportunity of a terminal device may be improved.

Optionally, in some embodiments, the SSB indicates that the specified type of downlink signal is a PDCCH or a PDSCH.

Further, in some embodiments, the SSB carries first indication information, where the first indication information indicates that the specified type of downlink signal is a PDCCH or a PDSCH.

For example, the SSB carries 1 bit, a bit of 1 indicates that the specified type downlink signal is a PDCCH, and a bit of 0 indicates that the specified type downlink signal is a PDSCH.

Or, further, in some embodiments, all bits or part of bits of a specific parameter of the SSB or a related sequence in the SSB indicates that the specific type of downlink signal is a PDCCH or a PDSCH.

For example, the System Frame Number (SFN) carried by the SSB is odd to indicate that the specified type of downlink signal is PDCCH, and even to indicate that the specified type of downlink signal is PDSCH.

a demodulation reference signal, DMRS, sequence in the SSB;

a primary synchronization signal, PSS, sequence in the SSB;

a Secondary Synchronization Signal (SSS) sequence in the SSB;

a scrambling sequence of a physical broadcast channel PBCH in the SSB;

a scrambling sequence of PSS in the SSB; and

scrambling sequence of SSS in the SSB.

an identification of the SSB;

a power difference between at least two of PSS, SSS, PBCH in the SSB;

a cell identity carried in the SSB;

receiving a period of the SSB;

a time offset of the SSB;

a frequency domain offset of the SSB;

the number of SSBs;

the number of repeated transmissions of the SSB;

frequency domain resource location of the SSB;

a time domain resource location of the SSB;

a physical resource mapping order of the SSBs;

a value configuration of the SSB;

SFN；

a field indication;

a cell barring access indication;

indicating same-frequency reselection;

a value configuration indication for a system message; and

DMRS location indication of system messages.

Optionally, in some embodiments, a designated RE outside the time-frequency domain resource where the PSS, SSS, PBCH are located in the time-frequency domain resource range of the SSB indicates that the designated type downlink signal is a PDCCH or a PDSCH.

Further, in some embodiments, the designated RE carries second indication information, where the second indication information indicates that the designated type downlink signal is a PDCCH or a PDSCH.

For example, the RE carrying information between SSS and PBCH indicates PDCCH or PDSCH

Further, in some embodiments, the designated RE includes a first segment RE and a second segment RE,

if the first section of RE carries data, indicating the specified type of downlink signal as a PDCCH;

and if the second section of RE carries data, indicating the specified type downlink signal as a PDSCH.

For example, two sections of REs exist between the SSS and the PBCH, for example, a first section of REs carries data, and another section of REs carries data when idle, which indicates sending PDCCH, and another section of REs carries data, and a first section of REs carries data when idle, which indicates sending PDSCH, and at this time, the data is not the indication information.

Optionally, in some embodiments, the method further comprises:

decoding the specified type downlink signal according to the PDCCH;

and if the decoding fails, decoding the specified type downlink signal according to the PDSCH.

At this time, the network device may not indicate whether the PDCCH or the PDSCH is transmitted together with the SSB, and the terminal device determines whether the PDCCH or the PDSCH is received through blind detection.

Fig. 3 discusses a method for a terminal device to receive a system message. A method for a network device to send a system message will be described with reference to fig. 4.

Fig. 4 is a flow chart of a system message transmission method according to an embodiment of the invention. The method of fig. 4 is performed by a network device. The method can comprise the following steps:

410, sending an SSB and a specified type downlink signal; wherein the SSB and the specified type of downlink signal are FDM in a frequency domain.

It should be understood that, in the embodiment of the present invention, when the SSB and the specified type of downlink signal are transmitted on a spectrum, the spectrum may be a shared spectrum, such as an unlicensed spectrum. Of course, the use of the scheme of the embodiments of the present invention in licensed spectrum is not excluded.

In the embodiment of the invention, the SSB and the PDCCH are sent in FDM, or the SSB and the PDSCH are sent in FDM, and the PDCCH sent in advance is used for indicating at least one scheduling parameter of the PDSCH sent in succession, so that the time required by transmitting the system message can be shortened, and the access opportunity of the terminal equipment is improved.

a demodulation reference signal, DMRS, sequence in the SSB;

a primary synchronization signal, PSS, sequence in the SSB;

a Secondary Synchronization Signal (SSS) sequence in the SSB;

a scrambling sequence of a physical broadcast channel PBCH in the SSB;

a scrambling sequence of PSS in the SSB; and

scrambling sequence of SSS in the SSB.

an identification of the SSB;

a power difference between at least two of PSS, SSS, PBCH in the SSB;

a cell identity (PCI) carried in the SSB;

receiving a period of the SSB;

a time offset of the SSB;

a frequency domain offset of the SSB;

the number of SSBs;

the number of repeated transmissions of the SSB;

frequency domain resource location of the SSB;

a time domain resource location of the SSB;

a physical resource mapping order of the SSBs;

a value configuration of the SSB;

SFN；

a field indication;

a cell barring access indication;

indicating same-frequency reselection;

a value configuration indication for a system message; and

DMRS location indication of system messages.

Or, further, in some embodiments, the designated RE includes a first RE and a second RE,

if the first RE carries data, indicating the specified type downlink signal as a PDCCH;

and if the second RE carries data, indicating the specified type downlink signal as a PDSCH.

Fig. 11 is a schematic time-frequency resource distribution diagram of an SSB according to an embodiment of the present application. In the embodiment shown in fig. 11, REs between the time-frequency resources of the PBCH above fig. 11 and the time-frequency resources of the SSS below fig. 11 may be defined as first REs, and REs between the time-frequency resources of the SSS and the time-frequency resources of the PBCH below fig. 11 may be defined as second REs. Of course, the former may be defined as the second RE and the latter may be defined as the second RE.

The method for sending the system message by the network device in fig. 4 may refer to the embodiment shown in fig. 3, and the embodiment of the present invention is not described herein again.

Fig. 5 is a schematic structural diagram of a terminal device according to an embodiment of the present invention. As shown in fig. 5, the terminal device 500 may include:

a receiving module 510 for receiving the SSB and the PDSCH;

The terminal device 500 may also execute the method in the embodiment shown in fig. 1, and for specific implementation, reference may be made to relevant steps in the embodiment shown in fig. 1, which is not described again.

Fig. 6 is a schematic structural diagram of a network device according to another embodiment of the present invention. As shown in fig. 6, the network device 600 may include:

a sending module 610, configured to send a synchronization signal block SSB and a physical downlink shared channel PDSCH;

The network device 600 may also execute the method in the embodiment shown in fig. 2, and for specific implementation, reference may be made to relevant steps in the embodiment shown in fig. 2, which are not described again.

Fig. 7 is a schematic structural diagram of a terminal device according to an embodiment of the present invention. As shown in fig. 7, the terminal device 700 may include:

a receiving module 710, which receives the synchronization signal block SSB and the specified type of downlink signal;

The terminal device 700 may also execute the method in the embodiment shown in fig. 3, and for specific implementation, reference may be made to relevant steps in the embodiment shown in fig. 3, which is not described again.

Fig. 8 is a schematic structural diagram of a network device according to another embodiment of the present invention. As shown in fig. 8, the network device 800 may include:

a sending module 810, configured to send a synchronization signal block SSB and a specified type of downlink signal;

The network device 800 may also execute the method in the embodiment shown in fig. 4, and for specific implementation, reference may be made to relevant steps in the embodiment shown in fig. 4, which are not described again.

Fig. 9 is a block diagram of a terminal device of another embodiment of the present invention. The terminal apparatus 900 shown in fig. 9 includes: at least one processor 901, memory 902, at least one network interface 904, and a user interface 903. The various components in the terminal device 900 are coupled together by a bus system 905. It is understood that the bus system 905 is used to enable communications among the components. The bus system 905 includes a power bus, a control bus, and a status signal bus, in addition to a data bus. For clarity of illustration, however, the various buses are labeled in fig. 9 as bus system 905.

The user interface 903 may include, among other things, a display, a keyboard, or a pointing device (e.g., a mouse, trackball, touch pad, or touch screen, among others.

It is to be understood that the memory 902 in embodiments of the present invention may be either volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The non-volatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable PROM (EEPROM), or a flash Memory. Volatile Memory can be Random Access Memory (RAM), which acts as external cache Memory. By way of illustration and not limitation, many forms of RAM are available, such as Static random access memory (Static RAM, SRAM), Dynamic Random Access Memory (DRAM), Synchronous Dynamic random access memory (Synchronous DRAM, SDRAM), Double Data Rate Synchronous Dynamic random access memory (ddr Data Rate SDRAM, ddr SDRAM), Enhanced Synchronous SDRAM (ESDRAM), Synchlink DRAM (SLDRAM), and Direct Rambus RAM (DRRAM). The memory 902 of the systems and methods described in connection with the embodiments of the invention is intended to comprise, without being limited to, these and any other suitable types of memory.

In some embodiments, memory 902 stores the following elements, executable modules or data structures, or a subset thereof, or an expanded set thereof: an operating system 9021 and application programs 9022.

The operating system 9021 includes various system programs, such as a framework layer, a core library layer, a driver layer, and the like, and is configured to implement various basic services and process hardware-based tasks. The application 9022 includes various applications, such as a Media Player (Media Player), a Browser (Browser), and the like, for implementing various application services. A program implementing the method of an embodiment of the present invention may be included in application 9022.

In this embodiment of the present invention, the terminal device 900 further includes: a computer program stored on a memory 902 and executable on a processor 901, the computer program implementing the method steps of the embodiment shown in fig. 1, or implementing the method steps of the embodiment shown in fig. 3, or implementing the method steps of the embodiment shown in fig. 5, when executed by the processor 901.

The method disclosed in the embodiments of fig. 1 and fig. 3 of the present invention may be applied to the processor 901, or implemented by the processor 901. The processor 901 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method may be implemented by integrated logic circuits of hardware or instructions in the form of software in the processor 901. The Processor 901 may be a general-purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic device, or discrete hardware components. The various methods, steps and logic blocks disclosed in the embodiments of the present 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. The software modules may reside in ram, flash memory, rom, prom, or eprom, registers, among other computer-readable storage media known in the art. The computer readable storage medium is located in the memory 902, and the processor 901 reads the information in the memory 902, and combines the hardware to complete the steps of the above method. In particular, the computer readable storage medium has stored thereon a computer program, which when executed by the processor 901 implements the steps of the method embodiments of fig. 1 and 3 as described above.

It is to be understood that the embodiments described herein may be implemented in hardware, software, firmware, middleware, microcode, or any combination thereof. For a hardware implementation, the Processing units may be implemented within one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), Digital Signal Processing Devices (DSPDs), Programmable Logic Devices (PLDs), Field Programmable Gate Arrays (FPGAs), general purpose processors, controllers, micro-controllers, microprocessors, other electronic units designed to perform the functions described herein, or a combination thereof.

For a software implementation, the techniques described in this disclosure may be implemented with modules (e.g., procedures, functions, and so on) that perform the functions described in this disclosure. The software codes may be stored in a memory and executed by a processor. The memory may be implemented within the processor or external to the processor.

Referring to fig. 10, fig. 10 is a structural diagram of a network device applied in the embodiment of the present invention, which can implement the details of the methods in fig. 2 and fig. 4 and achieve the same effect. As shown in fig. 10, the network device 1000 includes: a processor 1001, a transceiver 1002, a memory 1003, a user interface 1004, and a bus interface, wherein:

in this embodiment of the present invention, the network device 1000 further includes: a computer program stored in the memory 1003 and executable on the processor 1001, the computer program implementing the method steps in the embodiments shown in fig. 2 and 4 when executed by the processor 1001.

In fig. 10, the bus architecture may include any number of interconnected buses and bridges, with one or more processors represented by processor 1001 and various circuits of memory represented by memory 1003 being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 1002 may be a number of elements including a transmitter and a receiver that provide a means for communicating with various other apparatus over a transmission medium. The user interface 1004 may also be an interface capable of interfacing with a desired device for different user devices, including but not limited to a keypad, display, speaker, microphone, joystick, etc.

The processor 1001 is responsible for managing a bus architecture and general processes, and the memory 1003 may store data used by the processor 1001 in performing operations.

An embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the computer program implements each process of the method embodiments shown in fig. 1, fig. 2, fig. 3, and fig. 4, and can achieve the same technical effect, and in order to avoid repetition, details are not repeated here. The computer-readable storage medium may be a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk.

It should be noted that, in this document, 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.

Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal (such as a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.

While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. A method for transmitting a system message, comprising:

receiving a synchronous signal block SSB and a physical downlink shared channel PDSCH;

wherein at least one scheduling parameter for the PDSCH is indicated and/or predefined based on the SSB; at least one of all or part of bits of the designated parameters of the SSB and related sequences in the SSB has a mapping relation with at least one scheduling parameter of the PDSCH.

2. The method of claim 1,

the SSB carries first indication information, and the first indication information indicates at least one scheduling parameter of the PDSCH.

3. The method of claim 1, wherein the method further comprises the step of applying a voltage to the substrate

The SSB carries second indication information, and at least one of all or part of bits of the specified parameter of the SSB and a related sequence in the SSB jointly indicates the at least one scheduling parameter with the second indication information.

4. The method of claim 1 or 3,

the related sequences in the SSB include at least one of:

a demodulation reference signal, DMRS, sequence in the SSB;

a primary synchronization signal, PSS, sequence in the SSB;

a secondary synchronization SSS sequence in the SSB;

a scrambling sequence of a physical broadcast channel PBCH in the SSB;

a scrambling sequence of PSS in the SSB; and

a scrambling sequence of SSS in the SSB;

the specified parameters of the SSB include at least one of:

an identification of the SSB;

a power difference between at least two of PSS, SSS, PBCH in the SSB;

a cell identity carried in the SSB;

receiving a period of the SSB;

a time offset of the SSB;

a frequency domain offset of the SSB;

the number of SSBs;

the number of repeated transmissions of the SSB;

frequency domain resource location of the SSB;

a time domain resource location of the SSB;

a physical resource mapping order of the SSBs;

a value configuration of the SSB;

a system frame number SFN;

a field indication;

a cell barring access indication;

indicating same-frequency reselection;

a value configuration indication for a system message; and

DMRS location indication of system messages.

5. The method of claim 1, wherein the scheduling parameters comprise one or more of:

a hybrid automatic repeat request, HARQ, process indication for the PDSCH;

a redundancy version of the PDSCH;

an indication of whether the PDSCH is new data;

a mapping manner of the PDSCH;

a Modulation and Coding Scheme (MCS) of the PDSCH;

a transmission power control related parameter of the PDSCH;

a bandwidth of the PDSCH;

a frequency domain location of the PDSCH;

a time domain location of the PDSCH;

a time domain length of the PDSCH;

the number of DMRS in the PDSCH; and

a location of a DMRS in the PDSCH.

6. The method of claim 1,

the SSB and the PDSCH are FDM in the frequency domain; or

The SSB and the PDSCH are TDM in the time domain.

7. The method of claim 1,

the SSB also carries third indication information, and the third indication information indicates a transmission mode identifier; wherein

8. A method for transmitting a system message, comprising:

transmitting a Synchronization Signal Block (SSB) and a Physical Downlink Shared Channel (PDSCH), wherein at least one scheduling parameter of the PDSCH is indicated and/or predefined based on the SSB; at least one of all or part of bits of the designated parameters of the SSB and the related sequences in the SSB has a mapping relation with at least one scheduling parameter of the PDSCH.

9. The method of claim 8,

10. The method of claim 8, wherein the method further comprises the step of applying a voltage to the substrate

11. The method of claim 8 or 10,

the related sequences in the SSB include at least one of:

a demodulation reference signal, DMRS, sequence in the SSB;

a primary synchronization signal, PSS, sequence in the SSB;

a Secondary Synchronization Signal (SSS) sequence in the SSB;

a scrambling sequence of a physical broadcast channel PBCH in the SSB;

a scrambling sequence of PSS in the SSB; and

a scrambling sequence of SSS in the SSB;

the specified parameters of the SSB include at least one of:

an identification of the SSB;

a power difference between at least two of PSS, SSS, PBCH in the SSB;

a cell identity carried in the SSB;

receiving a period of the SSB;

a time offset of the SSB;

a frequency domain offset of the SSB;

the number of SSBs;

the number of repeated transmissions of the SSB;

frequency domain resource location of the SSB;

a time domain resource location of the SSB;

a physical resource mapping order of the SSBs;

a value configuration of the SSB;

a system frame number SFN;

a field indication;

a cell barring access indication;

indicating same-frequency reselection;

a value configuration indication for a system message; and

DMRS location indication of system messages.

12. The method of claim 8, wherein the scheduling parameters include one or more of:

a HARQ process indication for the PDSCH;

a redundancy version of the PDSCH;

an indication of whether the PDSCH is new data;

a mapping manner of the PDSCH;

an MCS for the PDSCH;

a transmission power control related parameter of the PDSCH;

a bandwidth of the PDSCH;

a frequency domain location of the PDSCH;

a time domain location of the PDSCH;

a time domain length of the PDSCH;

the number of DMRS in the PDSCH; and

a location of a DMRS in the PDSCH.

13. The method of claim 8,

the SSB and the PDSCH are FDM in the frequency domain; or

The SSB and the PDSCH are TDM in the time domain.

14. The method of claim 8,

the SSB also carries third indication information, and the third indication information indicates a transmission mode identifier.

15. A method for transmitting system messages, characterized in that,

receiving a synchronous signal block SSB and a specified type downlink signal;

wherein the SSB and the specified type of downlink signal are frequency division multiplexed FDM on a frequency domain;

16. The method of claim 15, wherein the SSB indicates the specified type of downlink signal as PDCCH or PDSCH.

17. The method of claim 16,

the SSB carries first indication information, and the first indication information indicates that the specified type downlink signal is a PDCCH or a PDSCH.

18. The method of claim 16,

all bits or part of bits of a designated parameter of the SSB or a related sequence in the SSB indicates that the designated type downlink signal is PDCCH or PDSCH.

19. The method of claim 18,

the related sequences in the SSB include at least one of:

a demodulation reference signal, DMRS, sequence in the SSB;

a primary synchronization signal, PSS, sequence in the SSB;

a Secondary Synchronization Signal (SSS) sequence in the SSB;

a scrambling sequence of a physical broadcast channel PBCH in the SSB;

a scrambling sequence of PSS in the SSB; and

a scrambling sequence of SSS in the SSB;

the specified parameters of the SSB include at least one of:

an identification of the SSB;

a power difference between at least two of PSS, SSS, PBCH in the SSB;

a cell identity carried in the SSB;

receiving a period of the SSB;

a time offset of the SSB;

a frequency domain offset of the SSB;

the number of SSBs;

the number of repeated transmissions of the SSB;

frequency domain resource location of the SSB;

a time domain resource location of the SSB;

a physical resource mapping order of the SSBs;

a value configuration of the SSB;

a system frame number SFN;

a field indication;

a cell barring access indication;

indicating same-frequency reselection;

a value configuration indication for a system message; and

DMRS location indication of system messages.

20. The method of claim 15,

and the specified REs outside the time-frequency domain resources of the PSS, SSS and PBCH in the time-frequency domain resource range of the SSB indicate that the specified type downlink signal is PDCCH or PDSCH.

21. The method of claim 20,

and the appointed RE carries second indication information, and the second indication information indicates that the appointed type downlink signal is PDCCH or PDSCH.

22. The method of claim 20,

the designated RE includes a first segment RE and a second segment RE,

23. The method of claim 15, wherein the method further comprises:

decoding the specified type downlink signal according to the PDCCH;

24. The method of claim 15,

25. A method for transmitting system messages, characterized in that,

sending a synchronous signal block SSB and a specified type downlink signal;

26. The method of claim 25,

and the SSB indicates that the specified type downlink signal is a PDCCH or a PDSCH.

27. The method of claim 26,

28. The method of claim 26,

29. The method of claim 28,

the related sequences in the SSB include at least one of:

a demodulation reference signal, DMRS, sequence in the SSB;

a primary synchronization signal, PSS, sequence in the SSB;

a Secondary Synchronization Signal (SSS) sequence in the SSB;

a scrambling sequence of a physical broadcast channel PBCH in the SSB;

a scrambling sequence of PSS in the SSB; and

a scrambling sequence of SSS in the SSB;

the specified parameters of the SSB include at least one of:

an identification of the SSB;

a power difference between at least two of PSS, SSS, PBCH in the SSB;

a cell identity carried in the SSB;

receiving a period of the SSB;

a time offset of the SSB;

a frequency domain offset of the SSB;

the number of SSBs;

the number of repeated transmissions of the SSB;

frequency domain resource location of the SSB;

a time domain resource location of the SSB;

a physical resource mapping order of the SSBs;

a value configuration of the SSB;

a system frame number SFN;

a field indication;

a cell barring access indication;

indicating same-frequency reselection;

a value configuration indication for a system message; and

DMRS location indication of system messages.

30. The method of claim 25,

31. The method of claim 30,

32. The method of claim 30,

the designated RE includes a first RE and a second RE,

33. The method of claim 25,

34. A terminal device, comprising:

the receiving module is used for receiving a synchronous signal block SSB and a physical downlink shared channel PDSCH;

35. A network device, comprising:

the sending module is used for sending a synchronous signal block SSB and a physical downlink shared channel PDSCH;

36. A terminal device, comprising:

the receiving module is used for receiving the synchronous signal block SSB and the specified type downlink signal;

37. A network terminal, comprising:

the sending module is used for sending the synchronous signal block SSB and the specified type downlink signal;