WO2025152123A1 - Indication method and apparatus for synchronization signal block - Google Patents

Abstract

Embodiments of the present application​ provide an indication method and apparatus for a synchronization signal block. The method comprises: a terminal device receives N synchronization signal block (SSB) configurations from a network device, and/or the terminal device receives RRC signaling and/or a MAC CE and/or DCI, the RRC signaling and/or the MAC CE and/or the DCI being used for indicating/activating/triggering one synchronization signal block configuration among the N synchronization signal block configurations.

Description

Method and device for indicating synchronization signal block Technical Field

The embodiments of the present application relate to the field of communication technologies.

Background Art

As an important part of the global new infrastructure construction, 5G communication networks have achieved rapid development in the world in recent years. As the network scale is getting larger and larger, the energy consumption of operators continues to grow. Taking the data released by the Ministry of Industry and Information Technology of China as an example, the energy consumption will increase by about 80% in 2022 compared with 2015.

With the construction of 5G and the large-scale commercial use of 5G active antenna processing units (AAU), compared with the remote radio unit (RRU) used in 3G and 4G, the energy consumption of AAU will increase exponentially due to its high power consumption. 5G defines three major service types: enhanced mobile broadband (eMBB), massive machine type of communication (mMTC), and ultra reliable low latency communication (URLLC). As a result, the number of 5G small packet burst services continues to increase, and the base station works 24 hours a day. The average daily energy consumption of 5G sites will be more than twice that of 4G.

3GPP has introduced key technologies such as Massive MIMO and larger RF bandwidth in the 5G era. 5G supports higher data rates and larger data traffic, requiring more transmission bandwidth. High-frequency band deployment will also be the main frequency band for 5G future expansion. However, the high-frequency band transmission characteristics limit the coverage of sites, making 5G site deployment more dense, and the energy consumption caused by increasing sites will bring huge operating cost pressure to operators. Therefore, network energy saving is of great significance to saving operating costs, and 5G network energy saving is an issue that needs to be solved urgently.

In order to achieve energy saving, the network equipment can perform energy saving processing in the time domain, frequency domain, space domain and/or energy domain according to the network load. For example, in the space domain and energy domain, the network equipment can turn off some antennas when the load is low to achieve the purpose of energy saving. In the time domain, the network equipment can adjust the period or time domain position of the cell common reference signal (such as SSB/SIB) when there are few users and light load to achieve the purpose of energy saving of the network equipment.

It should be noted that the above introduction to the technical background is only for the convenience of providing a clear and complete description of the technical solutions of the present application and for the convenience of understanding by those skilled in the art. It cannot be considered that the above technical solutions are well known to those skilled in the art simply because they are described in the background technology section of the present application.

Summary of the invention

The inventors have found that how to flexibly adjust the synchronization signal block (SSB) transmission to achieve energy saving without affecting the normal transmission of terminal devices has become a problem that needs to be urgently solved in network energy-saving technology.

In response to at least one of the above problems, an embodiment of the present application provides a method and device for indicating a synchronization signal block.

According to one aspect of an embodiment of the present application, a synchronization signal block (SSB) indication method is provided, including:

The terminal device receives N synchronization signal block (SSB) configurations from the network device, where N ≥ 1; and/or,

The terminal device receives RRC signaling and/or MAC CE and/or DCI; the RRC signaling and/or MAC CE and/or DCI are used to indicate/activate/trigger one of the N synchronization signal block configurations.

According to another aspect of an embodiment of the present application, a synchronization signal block (SSB) indication device is provided, including:

A receiving unit, which receives N synchronization signal block (SSB) configurations from a network device, where N ≥ 1; and/or, receives RRC signaling and/or MAC CE and/or DCI; the RRC signaling and/or MAC CE and/or DCI are used to indicate/activate/trigger one synchronization signal block configuration among the N synchronization signal block configurations.

According to another aspect of an embodiment of the present application, a synchronization signal block (SSB) indication method is provided, including:

The network device sends N synchronization signal block (SSB) configurations to the terminal device, where N ≥ 1; and/or,

The network device sends RRC signaling and/or MAC CE and/or DCI to the terminal device; the RRC signaling and/or MAC CE and/or DCI are used to indicate/activate/trigger one of the N synchronization signal block configurations.

According to another aspect of an embodiment of the present application, a synchronization signal block (SSB) indication device is provided, including:

A sending unit, which sends N synchronization signal block (SSB) configurations to a terminal device, where N ≥ 1; and/or, sends RRC signaling and/or MAC CE and/or DCI to the terminal device; the RRC signaling and/or MAC CE and/or DCI are used to indicate/activate/trigger one synchronization signal block configuration among the N synchronization signal block configurations.

According to another aspect of an embodiment of the present application, a communication system is provided, including:

A network device, which sends N synchronization signal block (SSB) configurations to a terminal device, where N ≥ 1; and/or, sends RRC signaling and/or MAC CE and/or DCI to the terminal device;

A terminal device, wherein the N synchronization signal blocks (SSB) are configured, and/or receives RRC signaling and/or MAC CE and/or DCI; the RRC signaling and/or MAC CE and/or DCI are used to indicate/activate/trigger one synchronization signal block configuration among the N synchronization signal block configurations.

One of the beneficial effects of the embodiments of the present application is that in some scenarios of wireless communication applications (such as energy-saving mode), network equipment and terminal equipment can quickly and flexibly adjust SSB transmission, which can not only improve network gain (such as energy-saving gain) but also ensure normal transmission of terminal equipment.

With reference to the following description and drawings, the specific implementation of the present application is disclosed in detail, indicating the principle of the present application. It should be understood that the embodiments of the present application are not limited in scope. Within the spirit and scope of the appended claims, the embodiments of the present application include many changes, modifications and equivalents.

Features described and/or illustrated with respect to one embodiment may be used in the same or similar manner in one or more other embodiments, combined with features in other embodiments, or substituted for features in other embodiments.

It should be emphasized that the term “include/comprises” when used herein refers to the presence of features, integers, steps or components, but does not exclude the presence or addition of one or more other features, integers, steps or components.

BRIEF DESCRIPTION OF THE DRAWINGS

The elements and features described in one figure or one implementation of the present application embodiment may be combined with the elements and features shown in one or more other figures or implementations. In addition, in the accompanying drawings, similar reference numerals represent corresponding parts in several figures and can be used to indicate corresponding parts used in more than one implementation.

FIG1 is a schematic diagram of a communication system according to an embodiment of the present application;

FIG2 is a schematic diagram of the time-frequency structure of SSB;

FIG3 is a schematic diagram of a method for indicating a synchronization signal block according to an embodiment of the present application;

FIG4 is an example diagram of SSB according to an embodiment of the present application;

FIG5 is an example diagram of an SSB pattern according to an embodiment of the present application;

FIG6 is an example diagram of SSB configuration 0 according to an embodiment of the present application;

FIG7 is an example diagram of SSB configuration 2 according to an embodiment of the present application;

FIG8 is an example diagram of SSB configuration 3 according to an embodiment of the present application;

FIG9 is an example diagram of SSB configuration 4 according to an embodiment of the present application;

FIG10 is a schematic diagram of a method for indicating a synchronization signal block according to an embodiment of the present application;

FIG11 is a schematic diagram of an indication device of a synchronization signal block according to an embodiment of the present application;

FIG12 is a schematic diagram of an indication device of a synchronization signal block according to an embodiment of the present application;

FIG13 is a schematic diagram of a terminal device according to an embodiment of the present application;

FIG. 14 is a schematic diagram of a network device according to an embodiment of the present application.

DETAILED DESCRIPTION

The above and other features of the present application will become apparent through the following description with reference to the accompanying drawings. In the description and the accompanying drawings, specific embodiments of the present application are specifically disclosed, which show some embodiments in which the principles of the present application can be adopted. It should be understood that the present application is not limited to the described embodiments. On the contrary, the present application includes All modifications, variations and equivalents coming within the scope of the appended claims.

In the embodiments of the present application, the terms "first", "second", etc. are used to distinguish different elements in terms of title, but do not indicate the spatial arrangement or temporal order of these elements, etc., and these elements should not be limited by these terms. The term "and/or" includes any one and all combinations of one or more of the associated listed terms. The terms "comprising", "including", "having", etc. refer to the presence of the stated features, elements, components or components, but do not exclude the presence or addition of one or more other features, elements, components or components.

In the embodiments of the present application, the singular forms "a", "the", etc. include plural forms and should be broadly understood as "a kind" or "a type" rather than being limited to the meaning of "one"; in addition, the term "said" should be understood to include both singular and plural forms, unless the context clearly indicates otherwise. In addition, the term "according to" should be understood as "at least in part according to...", and the term "based on" should be understood as "at least in part based on...", unless the context clearly indicates otherwise.

In an embodiment of the present application, the term "communication network" or "wireless communication network" may refer to a network that complies with any of the following communication standards, such as Long Term Evolution (LTE), enhanced Long Term Evolution (LTE-A), Wideband Code Division Multiple Access (WCDMA), High-Speed Packet Access (HSPA), and the like.

Furthermore, communication between devices in the communication system may be carried out according to communication protocols of any stage, such as but not limited to the following communication protocols: 1G (generation), 2G, 2.5G, 2.75G, 3G, 4G, 4.5G and 5G, New Radio (NR), future 6G, etc., and/or other communication protocols currently known or to be developed in the future.

In the embodiments of the present application, the term "network device" refers to, for example, a device in a communication system that connects a terminal device to a communication network and provides services for the terminal device. The network device may include, but is not limited to, the following devices: base station (BS), access point (AP), transmission reception point (TRP), broadcast transmitter, mobile management entity (MME), gateway, server, radio network controller (RNC), base station controller (BSC), etc.

Among them, base stations may include but are not limited to: NodeB (NodeB or NB), evolved NodeB (eNodeB or eNB) and 5G base station (gNB), IAB host, etc., and may also include remote radio head (RRH, Remote Radio Head), remote radio unit (RRU, Remote Radio Unit), relay or low-power node (such as femeto, pico, etc.). And the term "base station" may include some or all of their functions, and each base station may provide communication coverage for a specific geographical area. The term "cell" may refer to a base station and/or its coverage area, depending on the context in which the term is used.

In the embodiments of the present application, the term "user equipment" (UE) or "terminal equipment" (TE) refers to a device that accesses a communication network through a network device and receives network services. The terminal device may be fixed or mobile, and may also be referred to as a mobile station (MS), a terminal, a subscriber station (SS), an access terminal (AT), a station, and the like.

Among them, terminal devices may include but are not limited to the following devices: cellular phones, personal digital assistants (PDA, Personal Digital Assistant), wireless modems, wireless communication devices, handheld devices, machine-type communication devices, laptop computers, cordless phones, smart phones, smart watches, digital cameras, etc.

For another example, in scenarios such as the Internet of Things (IoT), the terminal device can also be a machine or device for monitoring or measuring, such as but not limited to: machine type communication (MTC) terminal, vehicle-mounted communication terminal, device to device (D2D) terminal, machine to machine (M2M) terminal, and so on.

In addition, the term "network side" or "network device side" refers to one side of the network, which may be a base station, or may include one or more network devices as above. The term "user side" or "terminal side" or "terminal device side" refers to one side of the user or terminal, which may be a UE, or may include one or more terminal devices as above. Unless otherwise specified herein, "device" may refer to either a network device or a terminal device.

The following describes the scenarios of the embodiments of the present application through examples, but the present application is not limited thereto.

FIG1 is a schematic diagram of a communication system according to an embodiment of the present application, schematically illustrating a situation taking a terminal device and a network device as an example. As shown in FIG1 , a communication system 100 may include a network device 101 and terminal devices 102 and 103. For simplicity, FIG1 only illustrates two terminal devices and one network device as an example, but the embodiment of the present application is not limited thereto.

In the embodiment of the present application, existing services or future services can be sent between the network device 101 and the terminal devices 102 and 103. For example, these services may include but are not limited to: enhanced mobile broadband (eMBB), massive machine type communication (mMTC), and ultra-reliable and low-latency communication (URLLC), etc.

It is worth noting that FIG1 shows that both terminal devices 102 and 103 are within the coverage of the network device 101, but the present application is not limited thereto. Both terminal devices 102 and 103 may not be within the coverage of the network device 101, or one terminal device 102 is within the coverage of the network device 101 and the other terminal device 103 is outside the coverage of the network device 101.

System message design is one of the important concepts in wireless communication systems. Cell-level system messages are mainly used to configure cell residency, provide user access, and interoperate. 5G NR simplifies system messages to a certain extent. Compared with 4G, it has different designs in synchronization signals and system message design, so it is necessary to re-understand it.

Different from the 4G design that separates the cell downlink synchronization signal and the physical broadcast channel, the 5G couples the cell synchronization signal (SS, Synchronization Signal) and the physical broadcast channel (PBCH, Physical Broadcast Channel) to some extent, which appear in the form of SS/PBCH resource blocks, referred to as synchronization signal blocks (SSBs).

Figure 2 is a schematic diagram of the time-frequency structure of SSB. As shown in Figure 2, SSB in 5G NR occupies 20 consecutive physical resource blocks (PRBs) in the frequency domain, with a maximum of 240 consecutive resource elements (REs), of which the synchronization signal (including the primary synchronization signal PSS and the secondary synchronization signal SSS) occupies 127 consecutive REs in the first and third OFDM symbols in the SSB respectively, and the center position of the SSB frequency domain can be flexibly configured and adjusted locally.

After the UE achieves SSB synchronization through frequency search, it decodes the master information block (MIB) in the physical broadcast channel. In the LTE system, in addition to configuring the MIB, the cell also configures SIB1 according to a fixed transmission cycle, and transmits the necessary parameter configuration required for parsing SIB2 to SIBN through SIB1. 5G NR provides an optimization mechanism for system message configuration, that is, it is configured on demand. In principle, SIB1 is not necessarily configured according to a fixed cycle. However, SIB1 transmits important information related to cell selection. Even if it is not configured according to a fixed cycle, it needs to be semi-statically configured through RRC signaling. Since the PDCCH carries limited content and cell-level system messages generally do not change dynamically, PDCCH is generally not used to carry system messages during design. In 5G NR, configuration is semi-statically implemented through RRC messages.

The "on-demand" design concept of 5G NR system messages greatly reduces the resource usage overhead of system messages. At the same time, terminal devices can also reduce the power consumption caused by periodic listening to system messages to a certain extent. In 5G NR, the parameter ssb-SubcarrierOffset in the MIB is used to determine whether SIB1 is configured in the PDCCH common search space CORESET#0. This parameter represents the subcarrier offset of the frequency domain starting position of the SSB relative to the public PRB. For the 5G cell carrier frequency in the FR1 (sub 6GHz) band, the UE combines the PBCH additional characterization of the time domain payload 1 bit to jointly determine the subcarrier offset of the SSB relative to the public PRB, with a value range of 0 to 31. If the value is not greater than 23, the UE considers that the cell is configured with the system message SIB1, otherwise the SIB1 bearer content does not appear in the system message mode; for the 5G cell carrier frequency in the FR2 band, the UE only determines the subcarrier offset through the parameter ssb-SubcarrierOffset, with a value range of 0 to 15. If the value is not greater than 11, the UE considers that the cell is configured with the system message SIB1, otherwise the SIB1 bearer content does not appear in the system message mode. If this parameter is not configured, the UE determines the frequency domain subcarrier offset of the SSB through frequency search.

For different subcarrier spacings, the candidate positions of SSBs per transmission half-frame are defined as follows:

A: Subcarrier spacing is 15kHz. For NR carrier frequencies not exceeding 3GHz in the FR1 band, the SSB candidate The transmission time can be configured at the {2, 8} OFDM position of time slots 0 and 1, so there are 4 candidate time slots in total. For NR carrier frequencies greater than 3 GHz in the FR1 band, the candidate transmission time of SSB is configured at the {2, 8} OFDM position of time slots 0, 1, 2, and 3, so there are 8 candidate time slots in total.

B: The subcarrier spacing is 30kHz. For NR carrier frequencies within the FR1 band that are not greater than 3GHz, the candidate transmission time of SSB can be configured at the {4, 8, 16, 20} OFDM positions calculated starting from time slot 0, so that there are 4 candidate times in total; and for NR carrier frequencies within the FR1 band that are greater than 3GHz, the candidate transmission time of SSB is configured at the {4, 8, 16, 20} OFDM positions calculated starting from time slots 0 and 2, respectively, for a total of 8 candidate times;

C: Subcarrier spacing is 30kHz. In 5G FDD spectrum mode, for NR carrier frequencies not exceeding 3GHz in the FR1 band, the candidate transmission time of SSB can be configured at the {2, 8} OFDM positions of time slots 0 and 1, so that there are 4 candidate times in total. For NR carrier frequencies greater than 3GHz in the FR1 band, the candidate transmission time of SSB can be configured at the {2, 8} OFDM positions of time slots 0, 1, 2, and 3, so that there are 8 candidate times in total. In 5G TDD spectrum mode, for NR carrier frequencies not exceeding 2.4GHz in the FR1 band, the candidate transmission time of SSB can be configured at the {2, 8} OFDM positions of time slots 0 and 1, so that there are 4 candidate times in total. For NR carrier frequencies greater than 2.4GHz in the FR1 band, the candidate transmission time of SSB can be configured at the {2, 8} OFDM positions of time slots 0, 1, 2, and 3, so that there are 8 candidate times in total.

D: Subcarrier spacing is 120kHz. For NR carrier frequencies in the FR2 band, the candidate transmission times of SSB are configured in time slots 0, 2, 4, 6, 10, 12, 14, 16, 20, 22, 24, 26, 30, 32, 34, 36, which are the {4, 8, 16, 20} OFDM positions calculated from the start, for a total of 64 candidate times.

E: The subcarrier spacing is 240 kHz. For the NR carrier frequency in the FR band, the candidate transmission times of SSB are configured in time slots 0, 4, 8, 12, 20, 24, 28, and 32, which are the starting OFDM positions of {8, 12, 16, 20, 32, 36, 40, 44}, respectively, for a total of 64 candidate times.

For the SSB candidate position pattern ABCDE transmitted in the half-frame, the UE can determine the specific index position of the currently transmitted SSB by decoding the PBCH payload bit. For a half-frame containing 4 SSB candidate transmission positions, the index is determined by 2 low-significant bits (LSB), and for a half-frame containing 8 SSB candidate transmission positions, the index is determined by 3 low-significant bits (LSB). In these two cases, the PBCH index is exactly one-to-one corresponding to the pseudo-random sequence initial sequence index of the DMRS in the SSB. When determining 2 low-significant bits or 3 low-significant bits, the UE does not directly obtain them by decoding the PBCH transmission bits, but indirectly performs logical mapping by decoding the DMRS. A half-frame contains 64 SSB candidate transmission positions. The index of the DMRS in the transmitted SSB is cyclically mapped according to 3 low-significant bits (8 SSB cycles). The UE combines the 3 low-significant bits (LSB) and the 3 additional high-significant bits (MSB, Most Significant Bit) of the PBCH payload to jointly determine the transmission index of the SSB. The PBCH payload is 32 bits in total, including 23 bits for carrying RRC content. Of these 23 bits, 6 bits are used for calculating the radio frequency. The high-order 6 bits of the frame, in addition to these 23 bits, the physical layer uses an additional 4 bits related to the transmission time as the low-order 4 bits for calculating the wireless frame, 1 bit as a half-frame identifier in the wireless frame, 3 bits as the high-order 3 bits for determining the SSB index, and the remaining 1 bit is not specified by the protocol, and the MAC layer entity fills it in order to align with the transmission byte.

The SSB pattern gives the possible candidate positions of SSBs and the maximum value of SSBs L _max in the SSB burst set (SS-burst). The number of SSBs actually activated may be less than L _max . The base station notifies the UE of which SSBs are activated through the high-level parameter ssb-PositionInBurst of SIB1 or UE-specific RRC signaling. For SSB-related RRC parameters, please refer to the relevant technology.

The above is a schematic illustration of the SSB-related contents of the embodiments of the present application, and the present application is not limited thereto. The inventors have found that: currently, SSB information such as the SSB period (ssb-periodicityServingCell) and the time domain position of activating the SSB within the SS-burst (ssb-PositionInBurst) are configured through RRC parameters. If the network device needs to adjust the configuration information of the SSB, it can only be achieved through the RRC reconfiguration message, which takes a long time to change and cannot quickly and flexibly adjust the SSB.

In the embodiment of the present application, the high-level signaling may be, for example, a radio resource control (RRC) signaling; for example, an RRC message (RRC message), including, for example, MIB, system information (system information), a dedicated RRC message; or an RRC IE (RRC information element). The high-level signaling may also be, for example, a MAC (Medium Access Control) signaling; or a MAC CE (MAC control element). However, the present application is not limited thereto.

In network energy-saving scenarios, for example, when the antenna configuration changes, how to map PDSCH resources is an urgent problem to be solved. In the following description, the terms "PDCCH" and "physical downlink control channel" or "downlink control information" can be interchanged without causing confusion, and the terms "PDSCH" and "physical downlink data channel" or "downlink data" can also be interchanged.

In addition, transmitting or receiving PDCCH can be understood as transmitting or receiving downlink control information carried by PDCCH; transmitting or receiving PDSCH can be understood as transmitting or receiving downlink data carried by PDSCH. In the embodiments of the present application, the terms "indication", "activation" and "trigger" can be interchangeable, or two or more of them can be used in combination.

Embodiments of the first aspect

The embodiment of the present application provides a method for indicating a synchronization signal block, which is described from the terminal device side. FIG3 is a schematic diagram of a method for indicating a synchronization signal block in an embodiment of the present application. As shown in FIG3, the method includes:

301, the terminal device receives N synchronization signal block (SSB) configurations from the network device, where N ≥ 1;

302, the terminal device receives RRC signaling and/or MAC CE and/or DCI; the RRC signaling and/or MAC CE and/or DCI are used to indicate/activate/trigger one of the N synchronization signal block configurations.

It is worth noting that the above FIG. 3 is only a schematic illustration of the embodiment of the present application, but the present application is not limited thereto. For example, the execution order between the various operations can be appropriately adjusted, and other operations can be added or some operations can be reduced. Those skilled in the art can make appropriate modifications based on the above content, and are not limited to the description of the above FIG. 3.

In some embodiments, the SSB configuration may be sent by RRC signaling. The network device may configure at least one SSB configuration for the terminal device. The SSB configuration is related to the first service cell/first carrier, that is, the N synchronization signal blocks (SSB) configurations are from the first service cell/first carrier, and/or the network device configures the N synchronization signal blocks (SSB) configurations to the first service cell/first carrier. The first service cell/first carrier is a secondary cell, and/or the first service cell/first carrier is a primary cell.

For example, the first serving cell is a secondary cell, and the secondary cell refers to a serving cell that serves only as a secondary cell of the UE, but not as a primary cell. For example, if a serving cell is the primary cell of some UEs, the SSB of the serving cell cannot be adjusted, or the network equipment in the serving cell cannot configure and activate/indicate/trigger the SSB configuration, and the SSB configured in accordance with the existing protocol can be operated. For another example, the SSB of an embodiment of the present application is only applicable to the secondary cell (Adaptation of SSB is applicable to the serving cell which is only used as SCell).

For another example, the first serving cell may be a primary cell or a secondary cell.

Regarding the bearer of SSB configuration, for example, if the first serving cell is a primary cell, in the Rel-19 NES scenario, the network device may configure at least one SSB configuration for the primary cell, for example, the SIB1 or RRC reconfiguration message of the primary cell includes at least one SSB configuration; for another example, if the first serving cell is a secondary cell, in the Rel-19 NES scenario, the network device may configure at least one SSB configuration for the secondary cell. For example, the secondary cell configuration information (SCellConfig->sCellConfigCommon:servingCellConfigCommon) includes at least one SSB configuration and/or includes an SSB configuration list. At least one SSB configuration of the primary cell or secondary cell configuration includes an SSB configuration in an existing protocol and an SSB configuration supported and/or enhanced by Rel-19 NES, wherein at least one SSB configuration has a default SSB, and the default configuration is the SSB configuration of the existing protocol or a configuration that does not transmit SSB (non-SSB), and/or the SSB configuration in the existing protocol is the default SSB, and at least one SSB configuration is an SSB configuration supported and/or enhanced by Rel-19 NES.

In some embodiments, the SSB configuration includes at least one of the following: SSB period, SSB time domain position indication, SSB subframe/half-frame index/offset or SSB time offset, SSB frequency, SSB subcarrier spacing, SSB power, SSB duration, The application is not limited to this and may also include other parameters.

For example, an SSB configuration contains at least one of the following information:

--SSB time domain position indication parameter, or SSB beam/spatial indication parameter, or SSB activation indication parameter in SS-burst, the parameter may reuse parameter ssb-PositionsInBurst, or newly define parameter, such as ssb-PositionsInBurst-r19. The parameter is used to indicate the time domain position parameter of SSB transmitted in SS-burst, or to indicate whether SS is activated/triggered in SSB burst, and the parameter can realize SSB per beam management/adjustment. For example, the parameter ssb-PositionsInBurst=10000000 indicates that only SSB corresponding to Beam 0 is activated in the SSB burst, thereby realizing SSB per beam management/adjustment;

--SSB period parameter, which is used to indicate the period of SSB. The parameter ssb-periodicityServingCell can be reused or a new parameter can be defined, such as ssb-Periodicity-r19;

--SSB frequency related parameters, which are used to indicate the frequency of SSB. The parameter absoluteFrequencySSB can be reused or a new parameter can be defined, such as ssbFrequency-r19;

--SSB subcarrier spacing related parameters, which are used to indicate the SSB subcarrier spacing, and can reuse the parameter ssb-SubcarrierOffset, or define a new parameter, such as ssb-SubcarrierOffset-r19;

--SSB subframe/half-frame index/offset or SSB time offset parameter, which is used to indicate whether the SSB is the first half-frame or the second half-frame, and/or, to indicate the subframe offset of the SSB, and/or, to indicate the time offset relative to SFN0 slot0, and/or, to indicate the SFN offset.

--SSB duration/SSB number parameter, the parameter is used to indicate the number of SSB cycles, or the duration of SSB. For example, the SSB cycle duration/SSB cycle number parameter is used to indicate the current SSB duration, and/or, the number of SSBs, and/or, the number of SSB cycles; for another example, if the parameter is present in the SSB configuration, it means that the SSB lasts for the parameter duration; if the parameter is absent, it means that the SSB is sent periodically;

--SSB transmission timer, the parameter is a timer used to indicate whether SSB is transmitted. Normal operation of the timer indicates SSB transmission, and timer timeout indicates that SSB stops transmitting. For example, the SSB transmission timer is used to indicate the duration of SSB transmission. During the normal operation (run) of the SSB transmission timer, the UE assumes/assumes that the serving cell transmits the SSB configured by the SSB; after the SSB transmission timer times out, the UE assumes/assumes that the serving cell does not transmit the SSB configured by the SSB; for another example, the terminal assumes/assumes that the SSB configuration is configured by high-level parameters and the timer starts running when it is activated.

The above schematically illustrates the various parameters of the SSB configuration, but the present application is not limited thereto. The SSB configuration may include one of the above parameters, or any combination of two or more parameters, and so on.

In some embodiments, the SSB configuration includes one or more parameters, which are Used to determine the transmission of SSB and/or used by the terminal device to determine the activation status of the SSB configuration.

For example, the one or more parameters may be referred to as SSB transmission activation/indication information/parameter/IE/parameter, or SSB transmission status information/parameter/IE. In the following, “SSB transmission activation/indication information/parameter/IE/parameter” will be used to replace “SSB transmission activation/indication information/parameter/IE/parameter or SSB transmission status information/parameter/IE”, but the present application is not limited thereto.

In some embodiments, one or more parameters included in the SSB configuration are used to indicate whether the SSB configuration is in an activated state, and/or indicate whether the first service cell sends SSB according to the SSB configuration, and/or indicate whether the first service cell sends SSB according to the SSB configuration after the terminal device receives the SSB configuration, and/or indicate whether the first service cell sends SSB according to the SSB configuration during the period from receiving the SSB configuration to receiving the RRC and/or MAC CE and/or DCI, and/or indicate whether the first service cell sends SSB, and/or indicate whether the first service cell sends SSB after the terminal device receives the SSB configuration, and/or indicate whether the first service cell sends SSB during the period from receiving the SSB configuration to receiving the RRC and/or MAC CE and/or DCI.

For example, the terminal device receives the secondary cell addition/modification configuration information (IE sCellToAddModList), and the SCell addition/modification configuration information includes SSB configuration related information; the terminal device is configured with the secondary cell addition/modification configuration IE sCellToAddModList, and the sCellToAddModList includes the SCellConfig IE, and the SCellConfig IE includes the ServingCellConfigCommon IE, and the ServingCellConfigCommon IE includes SSB configuration related parameters, such as ssb-PositionsInBurst, and/or, ssb-periodicityServingCell, and/or, ssbSubcarrierSpacing, and/or, ssb-PositionQCL-r16.

Table 1 schematically shows the situation of sCellToAddModList IE.

Table 1

Table 2 schematically shows the situation of ServingCellConfigCommon IE.

Table 2

For example, the secondary cell addition/configuration IE (sCellToAddModList) or SCellConfig IE or ServingCellConfigCommon IE includes at least SSB transmission activation/indication information/parameter/IE: the SSB transmission activation/indication information/parameter/IE/parameter is used to indicate whether the SSB configuration is activated, that is, whether the first serving cell transmits SSB according to the SSB configuration, and/or whether the first serving cell transmits SSB according to the SSB configuration after the terminal device receives the SSB configuration information.

The SSB transmission activation/indication information/parameter/IE is a newly defined or existing parameter, and the terminal device determines whether the first serving cell transmits SSB and/or whether the first serving cell transmits SSB according to the SSB configuration based on the value of the parameter. For example, the parameter is named SSBTransmissionState, or SSBState, or on-demandSSBTransmission.

For example, the parameter value is ENUMERATED{activated} or ENUMERATED{true}. When the field/parameter exists (present) or is included in the secondary cell configuration or SSB configuration, the UE assumes that the SSB configuration is activated; when the field/parameter does not exist (absent), the UE assumes that the SSB configuration is not activated.

For another example, the parameter value is ENUMERATED{deactivate} or ENUMERATED{false}. When the field/parameter exists (present) or is included in the secondary cell configuration or SSB configuration, the UE assumes that the SSB configuration is not activated; when the field/parameter does not exist (absent), the UE assumes that the SSB configuration is activated.

For another example, the parameter value is {activated, deactivated}, {true, false}, or {1, 0}. When the parameter value is activated or true or 1, it indicates that the SSB configuration is activated, and the first service cell transmits the SSB according to the SSB configuration; when the parameter value is false or 0, it indicates that the SSB configuration is not activated, and the first service cell does not transmit the SSB corresponding to the SSB configuration.

For another example, the parameter is named SSBAbsent, {true, false}, or {1, 0}; when the parameter value is true or 1, it indicates that the current SSB configuration is not activated, and the first service cell does not transmit the SSB corresponding to the SSB configuration; when the parameter value is false or 0, it indicates that the current SSB configuration is activated, and the first service cell transmits the SSB corresponding to the SSB configuration.

In some embodiments, the terminal device performs L1/L3 measurement and/or synchronization based on the one or more SSB transmission activation/indication information/parameters/IE parameters.

For example, the terminal device receives an SSB configuration, and the terminal device performs L1/L3 measurement and synchronization based on the SSB transmission indication information/parameters/IE.

For example, the terminal device is a Rel-19 NES terminal, and the terminal device receives secondary cell addition/modification configuration information, the secondary cell addition/modification configuration information includes an SSB configuration, the SSB configuration includes the SSB transmission activation/indication information/parameter/IE, the SSB transmission activation/indication information/parameter/IE indicates that the network device transmits the SSB in the first service cell, the terminal device assumes that the first service cell transmits the SSB, and the terminal performs measurement and synchronization based on the SSB.

For another example, the terminal device is a Rel-19 NES terminal, and the terminal device receives secondary cell addition/modification configuration information, the secondary cell addition/modification configuration information includes an SSB configuration, the SSB configuration includes the SSB transmission indication information/parameter/IE, the SSB transmission indication information/parameter/IE indicates to the terminal device that the first serving cell does not transmit the SSB, or the first serving cell does not transmit the SSB during the period from when the terminal device receives the secondary cell addition/modification configuration information to when the terminal receives the secondary cell activation MAC CE, and the terminal The device assumes that the first serving cell does not transmit SSB during the time period, and/or the terminal device does not perform measurement and synchronization.

For another example, the terminal device is a Rel-19 NES terminal, and the terminal device receives secondary cell addition/modification configuration information, the secondary cell addition/modification configuration information includes an SSB configuration, the SSB configuration does not include SSB transmission indication information/parameters/IE, the terminal device assumes (assumes) that the first service cell does not transmit SSB, or the first service cell does not transmit SSB from the time the terminal device receives the secondary cell addition/modification configuration information to the time the terminal device receives the secondary cell activation MAC CE, and the terminal device does not perform measurement and synchronization during this period; or, the terminal device assumes (assumes) that the first service cell transmits SSB, and the terminal device performs measurement and synchronization based on the SSB.

In some embodiments, the terminal device receives at least two SSB configurations:

For example, the terminal device is a Rel-19 NES terminal, and the terminal device receives secondary cell addition/modification configuration information, the secondary cell addition/modification configuration information includes multiple SSB configurations, the at least two SSB configurations include at least one SSB transmission indication information/parameter/IE, the at least one SSB transmission indication information/parameter/IE indicates that the first service cell transmits SSB, the terminal device assumes that the first service cell transmits SSB, and the terminal device performs measurement and synchronization based on the SSB corresponding to the SSB transmission indication information/parameter/IE.

For another example, the terminal device is a Rel-19 NES terminal, and the terminal device receives secondary cell addition/modification configuration information, the secondary cell addition/modification configuration information includes multiple SSB configurations, the at least two SSB configurations include at least one SSB transmission indication information/parameter/IE, the at least one SSB transmission indication information/parameter/IE all indicate that the first service cell does not transmit SSB, or the first service cell does not transmit SSB from the time the terminal device receives the secondary cell addition/modification configuration information to the time the terminal device receives the secondary cell activation MAC CE, the terminal device assumes that the first service cell does not transmit SSB during this period, and the terminal device does not perform measurement and synchronization.

For another example, the terminal device is a Rel-19 NES terminal, and the terminal device receives secondary cell addition/modification configuration information, the secondary cell addition/modification configuration information includes multiple SSB configurations, each SSB configuration does not include SSB transmission indication information/parameters/IE, the terminal device assumes (assume) that the first service cell does not transmit SSB, or the first service cell does not transmit SSB from the time the terminal device receives the secondary cell addition/modification configuration information to the time the terminal receives the secondary cell activation MAC CE, and the terminal device does not perform measurement and synchronization; or, the terminal device assumes (assume) that the first service cell transmits SSB, and the terminal device performs measurement and synchronization based on the SSB.

In some embodiments, the SSB configuration does not include a method for determining SSB transmission and/or determining the SSB configuration. One or more parameters of the activation state. The terminal device assumes that the first service cell does not transmit an SSB or the first service cell does not transmit an SSB corresponding to the SSB configuration, and the terminal device does not perform measurement and synchronization. Alternatively, the terminal device assumes that the first service cell transmits an SSB or the first service cell transmits an SSB corresponding to the SSB configuration and/or the first service cell transmits an SSB corresponding to an SSB configuration in a default or existing protocol, and the terminal device performs measurement and synchronization based on the SSB.

In some embodiments, whether the SSB configuration includes one or more parameters for indicating whether the serving cell sends SSB, and/or indicating whether the serving cell sends SSB after the terminal device receives the SSB configuration, and/or indicating whether the serving cell sends SSB during the period from receiving the SSB configuration to receiving the RRC and/or MAC CE and/or DCI.

The above is a schematic description of the SSB configuration. The following describes the indication/activation/triggering of the SSB configuration.

In some embodiments, the N SSB configurations are sent via RRC, where N>=1, and the RRC activates/indicates the 1 SSB configuration.

For example, RRC/high-level signaling includes SSB transmission activation/indication information/parameter/IE/parameter or SSB transmission status information/parameter/IE, and the parameter is used to indicate whether the SSB configuration is in an activated state; the terminal device determines whether the SSB configuration is activated based on the SSB transmission activation/indication information/parameter/IE/parameter or the SSB transmission status information/parameter/IE; the activated SSB is transmitted on the serving cell, and the terminal device performs measurement and/or synchronization and other operations based on the activated SSB.

In some embodiments, the one SSB configuration is activated/indicated through MAC CE; the MAC CE is a secondary cell activation/deactivation MAC CE, or the MAC CE is a MAC CE used to activate/trigger/indicate SSB configuration.

For example, existing MAC CEs, such as SCell activation/deactivation MAC CEs, can be reused.

If the higher layer configures two SSB configurations (e.g. Rel-19 NES), the reserved 1 bit in the SCell activation/deactivationMAC CE can be used for activation/triggering/indication of the SSB configuration; for example, when the reserved 1 bit is 0, it indicates that the current first SSB configuration is activated, and when the reserved 1 bit is 1, it indicates that the current second SSB configuration is activated;

If the upper layer configures an SSB configuration (for example, the upper layer in the existing protocol configures an SSB configuration), and the SSB configuration does not contain an SSB configuration activation/indication parameter/IE, or the SSB configuration activation/indication parameter/IE contained in the SSB configuration indicates that the SSB configuration is in an inactive state, the SCell activation/deactivation MAC CE can be used to activate or deactivate the SSB configuration.

In some embodiments, the terminal device assumes that the SSB is transmitted on the secondary cell after receiving the SCell activation MAC CE, and the terminal device performs synchronization and measurement operations based on the SSB; the terminal device assumes that after receiving the SCell activation MAC CE, the SSB is transmitted on the secondary cell, and the terminal device performs synchronization and measurement operations based on the SSB; After the secondary cell deactivates the MAC CE, the SSB is no longer transmitted on the secondary cell, and the terminal device does not perform synchronization and measurement operations.

If the serving cell does not send SSB before the terminal device receives the SCell activation/deactivation MAC CE, and the SCell activation/deactivation MAC CE is used to activate at least one SSB configuration, then the SCell activation/deactivation MAC CE is used to trigger the on-demand SSB.

For another example, a new MAC CE may be defined: the MAC CE is only used for activation/triggering/indication of SSB configuration; or, the MAC CE is used for both SCell activation/deactivation and activation/triggering/indication of SSB configuration.

In some embodiments, the activated SSB configuration is applied starting from the MAC CE application time.

In some embodiments, the first serving cell does not send SSB before the terminal device receives the secondary cell activation/deactivation MAC CE, and the secondary cell activation/deactivation MAC CE is used to activate at least one SSB configuration, then the secondary cell activation/deactivation MAC CE is used to trigger/activate/indicate on-demand SSB.

In some embodiments, when the terminal device receives the secondary cell activation MAC CE, the terminal device assumes that the first service cell sends an SSB; and/or, when the terminal device assumes that the first service cell sends an SSB after receiving the secondary cell activation MAC CE, the terminal device performs measurement and/or synchronization; and/or, when the terminal device receives the secondary cell deactivation MAC CE, the terminal device assumes that the first service cell does not send an SSB; and/or, when the terminal device assumes that the first service cell sends an SSB after receiving the secondary cell deactivation MAC CE, the terminal device does not perform measurement and/or synchronization.

In some embodiments, the SSB configuration is included in the secondary cell addition/modification configuration information, the MAC CE is the secondary cell activation/deactivation MAC CE, the first service cell is the secondary cell, and/or the SSB configuration is included in the SIB1 or RRC reconfiguration message, and the first service cell is the primary cell.

In some embodiments, the terminal device receives the secondary cell add/modify configuration information and the secondary cell activation MAC CE at the same time, then the terminal device does not expect the secondary cell add/modify configuration information to indicate that the serving cell does not send SSB.

For example, the terminal device is a Rel-19 NES terminal, the terminal device receives a secondary cell activation MAC CE, the terminal device assumes that the first serving cell transmits an SSB, or the terminal device assumes that the first serving cell transmits an SSB after receiving the secondary cell activation MAC CE, and the terminal device assumes that measurement and/or synchronization operations are performed after receiving the secondary cell activation MAC CE; and/or,

The terminal device receives the secondary cell deactivation MAC CE, and the terminal device assumes that the serving cell does not transmit SSB after receiving the secondary cell deactivation MAC CE, and the terminal device does not perform measurement and/or synchronization operations.

For another example, when the terminal device receives the secondary cell addition/modification configuration information and the secondary cell activation MAC CE at the same time, the terminal device does not expect the SSB transmission indication information/parameter/IE contained in the secondary cell addition/modification configuration information to indicate that the first service cell does not send SSB.

In some embodiments, the 1 SSB configuration is activated/indicated via DCI; the DCI is group common signaling and/or UE-specific signaling.

For example, Group common signalling can be used for activation/triggering/indication of SSB configuration. For example, it can be used after the secondary cell is activated, and for another example, it can be used after the secondary cell is configured but the secondary cell is not activated.

For another example, UE specific signalling can be used for activation/triggering/indication of SSB configuration. For example, the existing DCI can be reused for activation/triggering/indication of SSB configuration; or a new DCI can be defined for activation/triggering/indication of SSB configuration.

In some embodiments, the activated SSB configuration starts from the end time of the PDCCH carrying the SSB configuration activation.

The above schematically illustrates the contents related to SSB configuration and activation. The following further illustrates the SSB signal structure.

FIG4 is an example diagram of SSB of an embodiment of the present application. It shows the situation of normal SSB transmission and reduced SSB transmission. The simplified SSB/DRS signal structure can be at least one of the following: the simplified/reduced SSB/DRS only includes PSS and SSS, and does not include PBCH; the simplified/reduced SSB/DRS includes complete PSS and SSS, and part of PBCH; the simplified/reduced SSB/DRS includes complete PSS and SSS, and other NES related information; and so on.

In some embodiments, the Rel-19 NES does not support the simplified/reduced SSB/DRS signal structure, and the SSB signal structure is consistent with the existing protocol. For example, the reduced SSB including only PSS and SSS in FIG4 is not supported. In other embodiments, the Rel-19 NES supports the simplified/reduced SSB/DRS signal structure, and the SSB signal structure is consistent with the existing protocol. For example, the reduced SSB including only PSS and SSS in FIG4 is supported.

FIG5 is an example diagram of an SSB pattern according to an embodiment of the present application, showing a normal SSB pattern (120kHz SCS) and a compact/modified SSB pattern. For example, compared with a normal SSB, a compact/modified SSB changes the time domain position of the SSB within the SSB burst and shortens/reduces the time domain interval between every two SSBs.

In some embodiments, Rel-19 NES does not support the compact/modified SSB pattern shown in FIG5 , and the time-frequency position of the SSB in the SS-burst is consistent with the existing protocol. In other embodiments, Rel-19 NES supports Figure 5 shows the compact/modified SSB pattern.

In some embodiments, multiple SSB configurations may be included. Taking f<3Ghz, scs=15Khz as an example, for example, SSB configuration 0, SSB configuration 1, SSB configuration 2, SSB configuration 3, and SSB configuration 4 may be included.

For example, FIG6 is an example diagram of SSB configuration 0 of an embodiment of the present application. For example, SSB configuration 0 can be called normal SSB (or reference pattern). There are 4 SSBs in SS-burst, with a period of 20ms, and the RRC parameters are, for example, ssb-PositionsInBurst=1111, ssb-periodicityServingCell=ms20.

For another example, SSB configuration 1 may be called non-SSB. For example, this configuration may not be configured, and L1/L2 signaling may be used to implement non-SSB. For example, when the predefined DCI or MAC CE indicates 0, it indicates non-SSB.

For another example, FIG. 7 is an example diagram of SSB configuration 2 of an embodiment of the present application. For example, SSB configuration 2 has a longer period than SSB configuration 0 (normal SSB, or reference pattern). For example, as shown in FIG. 7 , there are 4 SSBs in the SS-burst, with a period of 40 ms, and the RRC parameters are, for example, ssb-PositionsInBurst=1111, ssb-periodicityServingCell=ms40.

For another example, FIG8 is an example diagram of SSB configuration 3 of an embodiment of the present application. For example, SSB configuration 3 has a partial beam compared to SSB configuration 0 (normal SSB, or reference pattern). For example, as shown in FIG8, there is 1 SSB in SS-burst, with a period of 40 ms, and the RRC parameters are, for example, ssb-PositionsInBurst = 1000, ssb-periodicityServingCell = ms40.

For another example, FIG9 is an example diagram of SSB configuration 4 of an embodiment of the present application. For example, SSB configuration 4 may have at least two types. For example, as shown in FIG9 , SSB type 1 has 4 SSBs in SS-burst with a period of 20 ms, and SSB type 2 has 1 SSB in SS-burst with a period of 20 ms.

The above is only a schematic description of the SSB configuration, and the present application is not limited thereto. For example, it may include one or any combination of the above, or may include other SSB configurations. In addition, the naming of the above SSB configuration is not limited thereto, and may be other names.

The above embodiments are merely exemplary of the embodiments of the present application, but the present application is not limited thereto, and appropriate modifications may be made based on the above embodiments. For example, the above embodiments may be used alone, or one or more of the above embodiments may be combined.

It can be seen from the above embodiments that in some scenarios of wireless communication applications (such as energy-saving mode), network equipment and terminal equipment can quickly and flexibly adjust SSB transmission, which can not only improve network gain (such as energy-saving gain) but also ensure normal transmission of terminal equipment.

Embodiments of the second aspect

The embodiment of the present application provides a method for indicating a synchronization signal block, which is described from the network device side. The embodiment of the second aspect can be combined with the embodiment of the first aspect, and the same contents as the embodiment of the first aspect are not repeated.

FIG. 10 is a schematic diagram of a method for indicating a synchronization signal block according to an embodiment of the present application. As shown in FIG. 10 , the method includes:

1001, the network device sends N synchronization signal block (SSB) configurations to the terminal device; and/or,

1002. The network device sends RRC signaling and/or MAC CE and/or DCI to the terminal device; the RRC signaling and/or MAC CE and/or DCI are used to indicate/activate/trigger one of the N synchronization signal block configurations.

It is worth noting that the above FIG. 10 is only a schematic illustration of the embodiment of the present application, but the present application is not limited thereto. For example, the execution order between the various operations can be appropriately adjusted, and other operations can be added or some operations can be reduced. Those skilled in the art can make appropriate modifications based on the above content, and are not limited to the description of the above FIG. 10.

In some embodiments, the network device may send N SSB configurations through the same RRC signaling and activate one of the N SSB configurations through the RRC signaling. In other embodiments, the network device may send N SSB configurations through one RRC signaling and activate one of the N SSB configurations through another RRC signaling.

In some embodiments, the network device may send N SSB configurations through one RRC signaling and activate one of the N SSB configurations through MAC CE. In other embodiments, the network device may send N SSB configurations through one RRC signaling and activate one of the N SSB configurations through DCI.

In some embodiments, the network device may send N SSB configurations via an RRC signaling, activate M of the N SSB configurations via MAC CE, and indicate one of the M activated SSB configurations via DCI.

The above embodiments are merely exemplary of the embodiments of the present application, but the present application is not limited thereto, and appropriate modifications may be made based on the above embodiments. For example, the above embodiments may be used alone, or one or more of the above embodiments may be combined.

It can be seen from the above embodiments that in some scenarios of wireless communication applications (such as energy-saving mode), network equipment and terminal equipment can quickly and flexibly adjust SSB transmission, which can not only improve network gain (such as energy-saving gain) but also ensure normal transmission of terminal equipment.

Embodiments of the third aspect

The embodiment of the present application provides a device for indicating a synchronization signal block. The device may be, for example, a terminal device, or one or more components or assemblies configured in the terminal device. The same contents as those in the embodiment of the first aspect are not repeated. Elaborate.

FIG11 is a schematic diagram of an indication device of a synchronization signal block according to an embodiment of the present application. As shown in FIG11 , an indication device 1100 of a synchronization signal block includes:

A receiving unit 1101 receives N synchronization signal block (SSB) configurations from a network device, where N ≥ 1; and/or receives RRC signaling and/or MAC CE and/or DCI; the RRC signaling and/or MAC CE and/or DCI are used to indicate/activate/trigger one synchronization signal block configuration among the N synchronization signal block configurations.

In some embodiments, as shown in FIG. 11 , the indication device 1100 of the synchronization signal block may further include:

The sending unit 1102 sends feedback information to the network device.

In some embodiments, the synchronization signal block configuration is related to a first serving cell (cell)/first carrier (carrier).

In some embodiments, the first serving cell/first carrier is a secondary cell, and/or the first serving cell/first carrier is a primary cell.

In some embodiments, the SSB configuration includes one or more parameters, which are used by the terminal device to determine the transmission of the SSB and/or are used by the terminal device to determine the activation status of the SSB configuration.

In some embodiments, one or more parameters included in the SSB configuration are used to indicate whether the SSB configuration is in an activated state, and/or indicate whether the first service cell sends SSB according to the SSB configuration, and/or indicate whether the first service cell sends SSB according to the SSB configuration after the terminal device receives the SSB configuration, and/or indicate whether the first service cell sends SSB according to the SSB configuration during the period from receiving the SSB configuration to receiving the RRC and/or MAC CE and/or DCI, and/or indicate whether the first service cell sends SSB, and/or indicate whether the first service cell sends SSB after the terminal device receives the SSB configuration, and/or indicate whether the first service cell sends SSB during the period from receiving the SSB configuration to receiving the RRC and/or MAC CE and/or DCI.

In some embodiments, as shown in FIG. 11 , the indication device 1100 of the synchronization signal block may further include:

A processing unit 1103 is configured to perform measurement and/or synchronization based on the one or more parameters.

In some embodiments, the SSB configuration does not include one or more parameters for determining SSB transmission and/or determining an activation state of the SSB configuration.

In some embodiments, the terminal device assumes that the first serving cell does not transmit the SSB or the first serving cell does not transmit the SSB corresponding to the SSB configuration, and the terminal device does not perform measurement and synchronization.

In some embodiments, the terminal device assumes that the first serving cell transmits an SSB or the first serving cell transmits an SSB corresponding to the SSB configuration, and the terminal device performs measurement and synchronization based on the SSB.

In some embodiments, whether the SSB configuration includes one or more parameters for indicating whether the serving cell sends SSB, and/or indicating whether the serving cell sends SSB after the terminal device receives the SSB configuration, and/or indicating whether the serving cell sends SSB during the period from receiving the SSB configuration to receiving the RRC and/or MAC CE and/or DCI.

In some embodiments, the SSB configuration includes at least one of the following: SSB period, SSB time domain position indication, SSB subframe/half-frame index/offset or SSB time offset, SSB frequency, SSB subcarrier spacing, SSB power, SSB duration, number of SSBs, and SSB send timer.

In some embodiments, the N SSB configurations are sent via RRC, and the RRC activates/indicates the 1 SSB configuration.

In some embodiments, the one SSB configuration is activated/indicated through MAC CE; the MAC CE is a secondary cell activation/deactivation MAC CE, or the MAC CE is a MAC CE used to activate/trigger/indicate SSB configuration.

In some embodiments, the first serving cell does not send SSB before the terminal device receives the secondary cell activation/deactivation MAC CE, and the secondary cell activation/deactivation MAC CE is used to activate at least one SSB configuration, then the secondary cell activation/deactivation MAC CE is used to trigger/activate/indicate on-demand SSB.

In some embodiments, when the terminal device receives the secondary cell activation MAC CE, the terminal device assumes that the first serving cell sends an SSB; and/or

When the terminal device receives the secondary cell activation MAC CE, the terminal device performs measurement and/or synchronization; and/or

When the terminal device receives the secondary cell deactivation MAC CE, the terminal device assumes that the first serving cell does not send SSB; and/or

When the terminal device receives the secondary cell deactivation MAC CE, the terminal device does not perform measurement and/or synchronization.

In some embodiments, the 1 SSB configuration is activated/indicated via DCI; the DCI is group common signaling and/or UE-specific signaling.

In some embodiments, the SSB configuration is included in the secondary cell addition/modification configuration information, the MAC CE is the secondary cell activation MAC CE, and/or the SSB configuration is included in the SIB1 or RRC reconfiguration message.

In some embodiments, if the terminal device receives the secondary cell addition/modification configuration information and the secondary cell activation MAC CE at the same time, the terminal device does not expect the secondary cell addition/modification configuration information to indicate that the serving cell does not send SSB.

It is worth noting that the above only describes the components or modules related to the present application, but the present application is not limited thereto. The synchronization signal block indication device 1100 may also include other components or modules, and the specific contents of these components or modules may refer to the relevant technology.

In addition, for the sake of simplicity, FIG. 11 only exemplifies the connection relationship or signal direction between various components or modules, but it should be clear to those skilled in the art that various related technologies such as bus connection can be used. The above-mentioned various components or modules can be implemented by hardware facilities such as processors, memories, transmitters, and receivers; the implementation of this application is not limited to this.

Through the embodiments of the present application, in some scenarios of wireless communication applications (such as energy-saving mode), network equipment and terminal equipment can quickly and flexibly adjust SSB transmission, which can not only improve network gain (such as energy-saving gain) but also ensure normal transmission of terminal equipment.

Embodiments of the fourth aspect

The embodiment of the present application provides a device for indicating a synchronization signal block. The device may be, for example, a network device, or may be one or more components or assemblies configured in the network device, and the contents identical to those in the first and second aspects of the embodiments are not repeated here.

FIG12 is a schematic diagram of an indication device of a synchronization signal block according to an embodiment of the present application. As shown in FIG12 , an indication device 1200 of a synchronization signal block includes:

A sending unit 1201, which sends N synchronization signal block (SSB) configurations to a terminal device, where N≥1; and/or, sends RRC signaling and/or MAC CE and/or DCI to the terminal device; the RRC signaling and/or MAC CE and/or DCI are used to indicate/activate/trigger one synchronization signal block configuration among the N synchronization signal block configurations.

In some embodiments, as shown in FIG. 12 , the indication device 1200 of the synchronization signal block may further include:

The receiving unit 1202 receives feedback information from the terminal device.

It is worth noting that the above only describes the components or modules related to the present application, but the present application is not limited thereto. The synchronization signal block indication device 1200 may also include other components or modules, and the specific contents of these components or modules may refer to the relevant technology.

In addition, for the sake of simplicity, FIG. 12 only exemplifies the connection relationship or signal direction between various components or modules, but it should be clear to those skilled in the art that various related technologies such as bus connection can be used. The above-mentioned various components or modules can be implemented by hardware facilities such as processors, memories, transmitters, and receivers; the implementation of this application is not limited to this.

Through the embodiments of the present application, in some scenarios of wireless communication applications (such as energy saving mode), the network device and The terminal device can quickly and flexibly adjust SSB transmission, which can not only improve network gain (such as energy-saving gain) but also ensure normal transmission of the terminal device.

Embodiments of the fifth aspect

An embodiment of the present application also provides a communication system, and reference may be made to FIG1 . The contents that are the same as those in the first to fourth embodiments will not be repeated herein.

In some embodiments, the communication system 100 may include at least:

A network device, which sends N synchronization signal block (SSB) configurations to a terminal device, where N ≥ 1; and/or, sends RRC signaling and/or MAC CE and/or DCI to the terminal device;

A terminal device, wherein the N synchronization signal blocks (SSB) are configured, and/or receives RRC signaling and/or MAC CE and/or DCI; the RRC signaling and/or MAC CE and/or DCI are used to indicate/activate/trigger one synchronization signal block configuration among the N synchronization signal block configurations.

The embodiment of the present application also provides a terminal device, but the present application is not limited thereto and may also be other devices.

FIG13 is a schematic diagram of a terminal device according to an embodiment of the present application. As shown in FIG13 , the terminal device 1300 may include a processor 1310 and a memory 1320; the memory 1320 stores data and programs and is coupled to the processor 1310. It is worth noting that the figure is exemplary; other types of structures may also be used to supplement or replace the structure to implement telecommunication functions or other functions.

For example, the processor 1310 may be configured to execute a program to implement the method for indicating a synchronization signal block as described in the embodiment of the first aspect. For example, the processor 1310 may be configured to perform the following control: receiving N synchronization signal block (SSB) configurations from a network device, where N ≥ 1; and/or, receiving RRC signaling and/or MAC CE and/or DCI; the RRC signaling and/or MAC CE and/or DCI are used to indicate/activate/trigger one of the N synchronization signal block configurations.

As shown in FIG13 , the terminal device 1300 may further include: a communication module 1330, an input unit 1340, a display 1350, and a power supply 1360. The functions of the above components are similar to those in the prior art and are not described in detail here. It is worth noting that the terminal device 1300 does not necessarily include all the components shown in FIG13 , and the above components are not necessary; in addition, the terminal device 1300 may also include components not shown in FIG13 , and reference may be made to the prior art.

An embodiment of the present application further provides a network device, which may be, for example, a base station, but the present application is not limited thereto and may also be other network devices.

FIG14 is a schematic diagram of the composition of a network device according to an embodiment of the present application. As shown in FIG14 , a network device 1400 may The system includes: a processor 1410 (eg, a central processing unit (CPU)) and a memory 1420 ; the memory 1420 is coupled to the processor 1410 . The memory 1420 can store various data; in addition, the memory 1420 also stores an information processing program 1430 , and executes the program 1430 under the control of the processor 1410 .

For example, the processor 1410 may be configured to execute a program to implement the method for indicating a synchronization signal block as described in the embodiment of the second aspect. For example, the processor 1410 may be configured to perform the following control: sending N synchronization signal block (SSB) configurations to a terminal device, where N ≥ 1; and/or, sending RRC signaling and/or MAC CE and/or DCI to the terminal device; the RRC signaling and/or MAC CE and/or DCI are used to indicate/activate/trigger one of the N synchronization signal block configurations.

In addition, as shown in FIG14 , the network device 1400 may further include: a transceiver 1440 and an antenna 1450, etc.; wherein the functions of the above components are similar to those of the prior art and are not described in detail here. It is worth noting that the network device 1400 does not necessarily include all the components shown in FIG14 ; in addition, the network device 1400 may also include components not shown in FIG14 , which may refer to the prior art.

An embodiment of the present application also provides a computer program, wherein when the program is executed in a terminal device, the program enables the terminal device to execute the method for indicating the synchronization signal block described in the embodiment of the first aspect.

An embodiment of the present application also provides a storage medium storing a computer program, wherein the computer program enables a terminal device to execute the method for indicating a synchronization signal block described in the embodiment of the first aspect.

An embodiment of the present application also provides a computer program, wherein when the program is executed in a network device, the program enables the network device to execute the method for indicating the synchronization signal block described in the embodiment of the second aspect.

An embodiment of the present application also provides a storage medium storing a computer program, wherein the computer program enables a network device to execute the method for indicating a synchronization signal block described in the embodiment of the second aspect.

The above devices and methods of the present application can be implemented by hardware, or by hardware combined with software. The present application relates to such a computer-readable program, which, when executed by a logic component, enables the logic component to implement the above-mentioned devices or components, or enables the logic component to implement the various methods or steps described above. The present application also relates to a storage medium for storing the above program, such as a hard disk, a magnetic disk, an optical disk, a DVD, a flash memory, etc.

The method/device described in conjunction with the embodiments of the present application may be directly embodied as hardware, a software module executed by a processor, or a combination of the two. For example, one or more of the functional block diagrams shown in the figure and/or one or more combinations of the functional block diagrams may correspond to various software modules of the computer program flow or to various hardware modules. These software modules may correspond to the various steps shown in the figure, respectively. These hardware modules may be implemented by solidifying these software modules, for example, using a field programmable gate array (FPGA).

Software modules can be located in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM Memory, register, hard disk, mobile disk, CD-ROM or any other form of storage medium known in the art. A storage medium can be coupled to a processor so that the processor can read information from the storage medium and write information to the storage medium; or the storage medium can be an integral part of the processor. The processor and the storage medium can be located in an ASIC. The software module can be stored in the memory of the mobile terminal or in a memory card that can be inserted into the mobile terminal. For example, if the device (such as a mobile terminal) uses a large-capacity MEGA-SIM card or a large-capacity flash memory device, the software module can be stored in the MEGA-SIM card or the large-capacity flash memory device.

For one or more of the functional blocks described in the drawings and/or one or more combinations of functional blocks, it can be implemented as a general-purpose processor, digital signal processor (DSP), application-specific integrated circuit (ASIC), field programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware component or any appropriate combination thereof for performing the functions described in the present application. For one or more of the functional blocks described in the drawings and/or one or more combinations of functional blocks, it can also be implemented as a combination of computing devices, such as a combination of a DSP and a microprocessor, multiple microprocessors, one or more microprocessors in communication with a DSP, or any other such configuration.

The present application is described above in conjunction with specific implementation methods, but it should be clear to those skilled in the art that these descriptions are exemplary and are not intended to limit the scope of protection of the present application. Those skilled in the art can make various modifications and variations to the present application based on the spirit and principles of the present application, and these modifications and variations are also within the scope of the present application.

Regarding the implementation methods including the above embodiments, the following additional notes are also disclosed:

1. A synchronization signal block (SSB) indication method, comprising:

The terminal device receives N synchronization signal block (SSB) configurations from the network device, where N ≥ 1; and/or,

The terminal device receives RRC signaling and/or MAC CE and/or DCI; the RRC signaling and/or MAC CE and/or DCI are used to indicate/activate/trigger one of the N synchronization signal block configurations.

2. A synchronization signal block (SSB) indication method, comprising:

The network device sends N synchronization signal block (SSB) configurations to the terminal device, where N ≥ 1; and/or,

The network device sends RRC signaling and/or MAC CE and/or DCI to the terminal device; the RRC signaling and/or MAC CE and/or DCI are used to indicate/activate/trigger one of the N synchronization signal block configurations.

3. A terminal device comprises a memory and a processor, wherein the memory stores a computer program, and the processor is configured to execute the computer program to implement the method for indicating a synchronization signal block as described in Note 1.

4. A network device comprising a memory and a processor, wherein the memory stores a computer program, and the processor The processor is configured to execute the computer program to implement the method for indicating the synchronization signal block as described in Note 2.

5. A computer program product that enables a terminal device to execute the method for indicating a synchronization signal block as described in Note 1.

6. A computer program product that enables a network device to execute the method for indicating a synchronization signal block as described in Note 2.

Claims (20)

A synchronization signal block indication device, comprising: A receiving unit, which receives N synchronization signal block configurations from a network device, where N≥1; and/or, receives RRC signaling and/or MAC CE and/or DCI; the RRC signaling and/or MAC CE and/or DCI are used to indicate/activate/trigger one synchronization signal block configuration among the N synchronization signal block configurations. The apparatus of claim 1, wherein the synchronization signal block configuration is associated with a first serving cell/first carrier. The apparatus according to claim 2, wherein the first serving cell/first carrier is a secondary cell, and/or the first serving cell/first carrier is a primary cell. The apparatus according to claim 1, wherein the synchronization signal block configuration includes one or more parameters, and the parameters are used by the terminal device to determine the sending of the synchronization signal block and/or are used by the terminal device to determine the activation state of the synchronization signal block configuration. The apparatus according to claim 4, wherein one or more parameters included in the synchronization signal block configuration are used to indicate whether the synchronization signal block configuration is in an activated state, and/or indicate whether the first service cell sends a synchronization signal block according to the synchronization signal block configuration, and/or indicate whether the first service cell sends a synchronization signal block according to the synchronization signal block configuration after the terminal device receives the synchronization signal block configuration, and/or indicate whether the first service cell sends a synchronization signal block according to the synchronization signal block configuration during the period from the receipt of the synchronization signal block configuration to the receipt of the RRC and/or MAC CE and/or DCI, and/or indicate whether the first service cell sends a synchronization signal block, and/or indicate whether the first service cell sends a synchronization signal block after the terminal device receives the synchronization signal block configuration, and/or indicate whether the first service cell sends a synchronization signal block during the period from the receipt of the synchronization signal block configuration to the receipt of the RRC and/or MAC CE and/or DCI. The device according to claim 4, wherein the device further comprises: A processing unit is provided for measuring and/or synchronizing based on the one or more parameters. The apparatus according to claim 1, wherein the synchronization signal block configuration does not include one or more parameters for determining the transmission of the synchronization signal block and/or determining the activation state of the synchronization signal block configuration. The apparatus according to claim 7, wherein the terminal device assumes that the first service cell does not transmit a synchronization signal block or the first service cell does not transmit a synchronization signal block corresponding to the synchronization signal block configuration, and the terminal device does not perform measurement and synchronization. The apparatus according to claim 7, wherein the terminal device assumes that the first service cell transmits a synchronization signal block or the first service cell transmits a synchronization signal block corresponding to the synchronization signal block configuration, and the terminal device performs measurement and synchronization based on the synchronization signal block. The apparatus according to claim 1, wherein the synchronization signal block configuration includes one or more parameters for indicating whether the service cell sends a synchronization signal block, and/or indicating whether the service cell sends a synchronization signal block after the terminal device receives the synchronization signal block configuration, and/or indicating whether the service cell sends a synchronization signal block during the period from receiving the synchronization signal block configuration to receiving the RRC and/or MAC CE and/or DCI. The device according to claim 1, wherein the synchronization signal block configuration includes at least one of the following: a synchronization signal block period, a synchronization signal block time domain position indication, a synchronization signal block subframe/half-frame index/offset or a synchronization signal block time offset, a synchronization signal block frequency, a synchronization signal block subcarrier spacing, a synchronization signal block power, a synchronization signal block duration, a synchronization signal block number, and a synchronization signal block sending timer. The apparatus according to claim 1, wherein the N synchronization signal block configurations are transmitted through RRC, and the RRC activates/indicates the one synchronization signal block configuration. The device according to claim 1, wherein the one synchronization signal block configuration is activated/indicated by MAC CE; the MAC CE is a secondary cell activation/deactivation MAC CE, or the MAC CE is a MAC CE for activating/triggering/indicating the synchronization signal block configuration. According to the apparatus according to claim 13, wherein the terminal device assumes that the first service cell does not send a synchronization signal block before receiving the secondary cell activation/deactivation MAC CE, and the secondary cell activation/deactivation MAC CE is used to activate at least one synchronization signal block configuration, then the secondary cell activation/deactivation MAC CE is used to trigger/activate/indicate an on-demand synchronization signal block. The device according to claim 13, wherein When the terminal device receives the secondary cell activation MAC CE, the terminal device assumes that the first serving cell sends a synchronization signal block; and/or When the terminal device receives the secondary cell activation MAC CE, the terminal device performs measurement and/or synchronization; and/or When the terminal device receives the secondary cell deactivation MAC CE, the terminal device assumes that the first serving cell does not send a synchronization signal block; and/or When the terminal device receives the secondary cell deactivation MAC CE, the terminal device does not perform measurement and/or synchronization. The apparatus according to claim 1, wherein the one synchronization signal block configuration is activated/indicated by DCI; the DCI is group common signaling and/or UE-specific signaling. The device according to claim 1, wherein the synchronization signal block configuration is included in the secondary cell addition/modification configuration information, the MAC CE is the secondary cell activation MAC CE, and/or the synchronization signal block configuration is included in the SIB1 or RRC reconfiguration message. According to the apparatus according to claim 17, wherein, if the terminal device receives the secondary cell addition/modification configuration information and the secondary cell activation MAC CE at the same time, the terminal device does not expect the secondary cell addition/modification configuration information to indicate that the service cell does not send a synchronization signal block. A synchronization signal block indication device, comprising: A sending unit, which sends N synchronization signal block configurations to a terminal device, where N ≥ 1; and/or, sends RRC signaling and/or MAC CE and/or DCI to the terminal device; the RRC signaling and/or MAC CE and/or DCI are used to indicate/activate/trigger one synchronization signal block configuration among the N synchronization signal block configurations. A communication system, comprising: A network device, which sends N synchronization signal block configurations to a terminal device, where N ≥ 1; and/or, sends RRC signaling and/or MAC CE and/or DCI to the terminal device; A terminal device, which receives the N synchronization signal block configurations, and/or receives RRC signaling and/or MAC CE and/or DCI; the RRC signaling and/or MAC CE and/or DCI are used to indicate/activate/trigger one synchronization signal block configuration among the N synchronization signal block configurations.