Information Processing Method, Information Transmission Method, and Apparatus

Abstract

In an embodiment of the present invention, an information processing method, an information transmission method, and an apparatus are provided. The information processing method includes: a terminal device receiving a second synchronization signal block (SSB) of a second cell transmitted by a network-side device; and based on the second synchronization signal block, performing downlink reception on a first cell reference signal or determining a measurement result of the first cell, where a first synchronization signal block of the first cell and a second synchronization signal block of the second cell have a quasi-collocation (QCL) relationship.

Description

Technical Field

[0001] The present invention relates to the technical field of communications.

Background Art

[0002] Since an NR (New Radio) base station needs to work with a large bandwidth (for example, 100 MHz), it requires the use of a large number of ports (64T / 64R) and a shorter TTI (Transmission Time Interval) (for example, 1 ms). The energy consumption of an NR base station for functions such as baseband processing and digital front-end is much higher than that of an LTE base station. In addition, the operating frequency (>6 GHz) of FR2 (Frequency Range 2) of NR is relatively high, and the higher the frequency point, the greater the signal path loss. Therefore, in the design of NR, in principle, a relatively narrow beam is used to transmit the signal farther. Thus, in an NR base station, the number of antenna units for analog beamforming increases significantly, and accordingly, the number of RF units and RF channels for transmitting and receiving signals also increases. One power amplifier (PA) is provided for each RF channel, and the power consumption of the PA accounts for about 80% of the total power consumption of the base station. As the number of PAs increases, the power consumption of the base station also increases. At present, AAUs (Active Antenna Units) in the FR1 (Frequency Range 1) band generally adopt 192 antenna units (elements) to support 64 channels, which is much more than the maximum 8 channels of LTE.

[0003] According to the data statistics of communication operators, on average, the power consumption of one NR base station is more than three times that of an LTE base station. Among the costs for communication operators to deploy a 5G (fifth-generation) network, approximately 50% is the electricity cost. More importantly, even during time periods without traffic, the energy consumption of NR base stations remains high because base stations still need to transmit common signals, such as SSB (synchronization signal block), SIB1 (system information block type 1), SI (system information), etc., even when there is no traffic. This significantly reduces the energy usage efficiency of NR base stations. Therefore, energy saving in the NR network (also referred to as energy conservation) is a problem awaiting solution.

[0004] Note that the introduction of the above background technology is for clearly and completely explaining the technical solution of the present invention and for facilitating understanding by those skilled in the art. These technical solutions should not be construed as being well-known to those skilled in the art just because they are described in the background technology of the present invention.

Summary of the Invention

Problems to be Solved by the Invention

[0005] In 3GPP (registered trademark) Rel-15 / Rel-16, in the scenario of intra-band carrier aggregation (CA), the secondary cell (SCell) of a terminal device does not need to transmit a synchronization signal block (SSB), and it is supported that the terminal device performs downlink synchronization of the SCell by the SSB transmitted by the special cell (SpCell). At the same station address, at least one cell transmits the SSB, and only the cell transmitting the SSB can be the SpCell of the terminal device.

[0006] The inventors have discovered the following. That is, in the prior art, among cells with the same station address, at least one cell must transmit an SSB, and the serving cell (at least the SpCell) of the terminal device must transmit an SSB. Thus, even when there is no traffic at the station address, the energy overhead becomes extremely high and cannot contribute to network energy savings.

[0007] Also, for network energy savings, if all serving cells of the terminal device stop transmitting SSBs or extend the SSB transmission period, it means that the terminal device loses downlink synchronization with the serving cell and the downlink channel estimation signal, that is, the terminal device cannot perform measurements based on the SSB of the serving cell, so the serving cell of the terminal device cannot serve the terminal device. The terminal device originally connected to the serving cell needs to switch to an adjacent cell, and the terminal device originally camping in the serving cell needs to perform cell re-selection to camp in an adjacent cell. FIG. 1 is a diagram showing a network energy saving scheme. As shown in FIG. 1, for the SpCell of the terminal device, for network energy savings, the network device can be dynamically activated and deactivated based on information such as the traffic volume and measurement reports of the NR cell and its adjacent cells. When deactivating the cell, the transmission of the synchronization signal block, system information, etc. of the cell is stopped, and the reception of the uplink signal transmitted by the terminal device is stopped. Thus, when the traffic volume is relatively low, the energy consumption of the SpCell can be saved.

[0008] In this way, when a cell enters the energy-saving state, the terminal device switches to an adjacent cell and can notify an adjacent NR network device or an LTE network device that the NR cell has entered the energy-saving state. The adjacent NR / LTE network device will then be responsible for the coverage and traffic volume of the NR cell. Subsequently, based on information such as its own traffic volume and measurement reports, the adjacent NR / LTE network device determines whether to request the NR cell that has entered the energy-saving state to resume normal operation. For example, when its own traffic volume reaches a predetermined threshold, it triggers a request for the NR cell that has entered the energy-saving state to resume normal operation. When the NR cell resumes normal operation, some terminal devices that switched to the adjacent NR / LTE cell before may switch back to the NR cell.

[0009] The inventors have discovered the following. That is, in the above scheme, when an NR cell dynamically enters the energy-saving state multiple times, the terminal device will also frequently switch from the NR cell or frequently perform cell reselection. In this way, it can affect the user experience. Also, when the terminal device of a cell in the energy-saving state migrates to an adjacent cell, the load level of the adjacent cell will inevitably increase, affecting the service quality of the terminal devices in the adjacent cell.

[0010] In view of at least one of the above problems, embodiments of the present invention provide an information processing method, an information transmission method, and an apparatus.

Means for Solving the Problems

[0011] According to one aspect of an embodiment of the present invention, an information transmission apparatus is provided, which is arranged on a network-side device, and the apparatus includes: a second transmission unit, which stops transmitting the first synchronization signal block of the first cell to be transmitted to the terminal device; and transmits the second synchronization signal block of the second cell to be transmitted to the terminal device, or stops transmitting the second synchronization signal block of the second cell to be transmitted, Among them, the first synchronization signal block of the first cell and the second synchronization signal block of the second cell have a quasi-collocation (QCL) relationship.

[0012] According to another aspect of the embodiments of the present invention, an information processing apparatus is provided, which is arranged in a terminal device, and the apparatus includes: a first receiving unit configured to receive a second synchronization signal block (SSB) of a second cell transmitted by a network-side device; and a first processing unit configured to perform downlink reception on a first cell reference signal based on the second synchronization signal block, or determine a measurement result of the first cell, Among them, the first synchronization signal block of the first cell and the second synchronization signal block of the second cell have a quasi-collocation (QCL) relationship.

[0013] According to still another aspect of the embodiments of the present invention, an information transmitting apparatus is provided, which is arranged in a terminal device, and the apparatus includes: a first transmitting unit, configured to, when the terminal device starts random access in a first cell, or performs RLM / BFD / RRM measurement based on a first synchronization signal block of the first cell, or performs cell selection or reselection measurement on the first cell, and when the terminal device cannot successfully receive or measure the first synchronization signal block, transmit a first wake-up signal to a network-side device, where the first wake-up signal is used to instruct the network device to resume transmission of the first synchronization signal block of the first cell.

Advantages of the Invention

[0014] The advantageous effects of the embodiments of the present invention are at least as follows.

[0015] The terminal device can perform downlink reception for the reference signal of the energy-saving cell based on the synchronization signal blocks of other cells, or determine the measurement results of the energy-saving cell. Moreover, the terminal device can perform random access in the energy-saving cell, RLM / BFD / RRM measurements based on CSI-RS or SSB, cell selection or reselection measurements. In this way, the terminal device does not need to switch to other cells, and the terminal device that originally camped in the energy-saving cell also does not need to perform cell reselection. Therefore, it is possible to avoid the interruption of services and the increase in the load level of adjacent cells caused by the migration of the terminal device in the energy-saving cell to adjacent cells, and ensure that there is no degradation in the user experience when the cell enters the energy-saving state.

[0016] In addition, the terminal device can send a Wake-Up signal to cause the energy-saving cell that has stopped transmitting SSB to resume transmitting SSB, and based on the SSB whose transmission has been resumed, perform random access in the energy-saving cell, RLM / BFD / RRM measurements based on CSI-RS or SSB, cell selection or reselection measurements, etc. In this way, the terminal device does not need to switch to other cells, and the terminal device that originally camped in the energy-saving cell also does not need to perform cell reselection. Therefore, it is possible to avoid the interruption of services and the increase in the load level of adjacent cells caused by the migration of the terminal device in the energy-saving cell to adjacent cells.

[0017] Specific embodiments of the present invention are disclosed in detail by referring to the following description and drawings, showing aspects in which the principles of the present invention can be adopted. It should be noted that the embodiments of the present invention are not limited in scope by these. Within the scope of the appended claims, the embodiments of the present invention may include various changes, modifications, and substitutions.

[0018] Moreover, the features described and / or shown for one embodiment can be used in one or more other embodiments in the same or similar manner, combined with the features in other embodiments, or replace the features in other embodiments.

[0019] Note that terms such as "comprising / including" when used in this specification not only refer to the presence of features, elements, steps, or assemblies, but also refer to the fact that the presence or addition of one or more other features, elements, steps, or assemblies is not excluded.

Brief Description of the Drawings

[0020] The elements and features described in one drawing or one embodiment of the present invention can be combined with the elements and features shown in one or more other drawings or embodiments. Also, in the drawings, like reference numerals are used to indicate corresponding parts in several drawings and are also used to indicate corresponding parts used in multiple embodiments.

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Embodiments for Carrying Out the Invention

[0021] The foregoing and other features of the present invention will become apparent by referring to the accompanying drawings and the following description. Although specific embodiments of the present invention are disclosed in the specification and drawings, they are only some examples that can adopt the principles of the present invention. It should be understood that the present invention is not limited to the described embodiments, that is, the present invention also includes all changes, modifications and alternatives within the scope of the appended claims.

[0022] In an embodiment of the present invention, the term "communication network" or "wireless communication network" may refer to a network conforming to any of the following communication standards, for example, LTE (Long Term Evolution), LTE-A (LTE-Advanced), WCDMA (registered trademark) (Wideband Code Division Multiple Access), HSPA (High-Speed Packet Access), etc.

[0023] Also, the communication between devices in the communication system may be performed according to a communication protocol at any stage. For example, it may include, but is not limited to, the following communication protocols, that is, 1G (generation), 2G, 2.5G, 2.75G, 3G, 4G, 4.5G, 5G, New Radio (NR), etc., and / or other conventional or future-developed communication protocols.

[0024] In an embodiment of the present invention, the term "network device" refers to, for example, a device that connects a terminal device to a communication network and provides services to the terminal device in a communication system. The network device may include, but is not limited to, the following, namely, a base station (BS), an access point (AP), a transmission reception point (TRP), a broadcast transmitter, a mobile management entity (MME), a network gateway, a server, a radio network controller (RNC), a base station controller (BSC), and the like.

[0025] The base station may include, but is not limited to, the following, namely, Node B (NodeB or NB), evolved Node B (eNodeB or eNB), 5G base station (gNB), etc., and may further include a remote radio head (RRH), a remote radio unit (RRU), a relay, or a low-power node (for example, femto, pico, etc.). Also, the term "base station" may include some or all of their functions, and each base station can provide communication coverage for a specific geographical area. The term "cell" may refer to a base station and / or the area it covers, depending on the context in which the term is used. Also, unless there is confusion, the cell and the base station are interchangeable.

[0026] In embodiments of the present invention, the term "user equipment" (UE) or "terminal equipment" (TE) refers to, for example, a device that accesses a communication network by a network device and receives services from the network. The user equipment may be fixed or mobile, and is also referred to as a mobile station (MS), a terminal, a subscriber station (SS), an access terminal (AT), a station, etc.

[0027] The user equipment may include, but is not limited to, for example, a cellular phone, a PDA (Personal Digital Assistant), a wireless modem, a wireless communication device, a mobile device, a machine type communication device, a laptop computer, a cordless telephone, a smartphone, a smartwatch, a digital camera, etc.

[0028] Also, for example, in scenarios such as IoT (Internet of Things), the user equipment may further be a device or apparatus that performs monitoring or measurement, and may include, but is not limited to, for example, the following, namely, a machine type communication (MTC) terminal, a vehicle-mounted communication terminal, a D2D (Device to Device) terminal, an M2M (Machine to Machine) terminal, etc.

[0029] Also, the term "network side" or "network device side" refers to the side of the network, which may be a certain base station and may include one or more network devices as described above. The term "user side" or "terminal side" or "terminal equipment side" refers to the side of the user or the terminal, which may be a certain UE and may include one or more terminal devices as described above. Here, unless otherwise specified, the "device" may refer to a network device or a terminal device.

[0030] In the following description, as long as there is no confusion, the term "uplink control signal" can be exchanged with "uplink control information (UCI)" or "physical uplink control channel (PUCCH)", the term "uplink data signal" can be exchanged with "uplink data information" or "physical uplink shared channel (PUSCH)", the term "downlink control signal" can be exchanged with "downlink control information (DCI)" or "physical downlink control channel (PDCCH)", and the term "downlink data signal" can be exchanged with "downlink data information" or "physical downlink shared channel (PDSCH)".

[0031] Also, the transmission or reception of PUSCH may be understood as the transmission or reception of uplink data carried by PUSCH, the transmission or reception of PUCCH may be understood as the transmission or reception of uplink information carried by PUCCH, the transmission or reception of PRACH may be understood as the transmission or reception of a preamble carried by PRACH, the uplink signal may include an uplink data signal and / or an uplink control signal, etc., and may be referred to as uplink transmission or uplink information or uplink channel. Transmitting uplink transmission on an uplink resource may be understood as transmitting the uplink transmission using the uplink resource. Similarly, downlink data / signal / channel / information can also be understood.

[0032] In an embodiment of the present invention, the upper layer signaling may be, for example, radio resource control (RRC) signaling, which is called, for example, an RRC message and includes, for example, a master information block (MIB), system information, and dedicated RRC messages, or is referred to as an RRC information element (RRC IE). The upper layer signaling may further be, for example, medium access control (MAC) signaling, or may be called a MAC control element (MAC CE). Note that the present invention is not limited thereto.

[0033] Hereinafter, the scenario of the embodiment of the present invention will be described through examples, but the present invention is not limited thereto.

[0034] FIG. 2 is a diagram showing a communication system according to an embodiment of the present invention, and shows a case where a terminal device and a network device are taken as examples. As shown in FIG. 2, the communication system 200 may include a network device 201 and terminal devices 202 and 203. For the sake of convenience, in FIG. 2, two terminal devices and one network device are taken as examples for description, but the embodiments of the present invention are not limited thereto.

[0035] In an embodiment of the present invention, conventional services or services that can be implemented in the future can be transmitted between the network device 201 and the terminal devices 202 and 203. For example, these services may include, but are not limited to, enhanced mobile broadband (eMBB), massive machine type communication (mMTC), ultra-reliable and low-latency communication (URLLC), etc.

[0036] Among them, the terminal device 202 can send data to the network device 201. For example, it may use a licensed or unlicensed transmission method. The network device 201 can receive data sent from one or more terminal devices 202 and can feedback information, such as confirmation ACK / non-confirmation NACK information, etc., to the terminal device 202. The terminal device 202 can confirm the end of the transmission process, or the transmission of new data, or the retransmission of data based on the feedback information.

[0037] Note that in FIG. 2, it shows that both two terminal devices 202 and 203 are within the coverage of the network device 201, but the present invention is not limited thereto. The two terminal devices 202 and 203 do not all have to be located within the coverage of the network device 201, or one terminal device 202 may be within the coverage of the network device 201, while the other terminal device 203 may be outside the coverage of the network device 201.

[0038] Hereinafter, embodiments of the present invention will be described in conjunction with the drawings and specific implementation manners.

[0039] <Embodiment of the first aspect> In an embodiment of the present invention, an information processing method is provided and described from the perspective of the terminal device.

[0040] FIG. 3 is a diagram showing an information processing method in an embodiment of the present invention, which is applied to a terminal device. As shown in FIG. 3, the method includes the following operations (steps).

[0041] 301: The terminal device receives a second synchronization signal block (SSB) of a second cell transmitted by the network-side device; and 302: The terminal device performs downlink reception on the first cell reference signal based on the second synchronization signal block, or determines a measurement result of the first cell; Among them, the first synchronization signal block of the first cell and the second synchronization signal block of the second cell have a quasi-collocation (QCL) relationship.

[0042] Note that although FIG. 3 described above exemplarily illustrates an embodiment of the present invention, the present invention is not limited thereto. For example, some operations can be increased or decreased. A person skilled in the art can make appropriate modifications based on the above content without being limited to the description of FIG. 3 above.

[0043] In some embodiments, when there is no traffic, the network side can stop transmitting the synchronization signal block of one or more serving cells of the terminal device, or extend the transmission period of the synchronization signal block (for example, extend it from 20 ms to 320 ms). Hereinafter, the stop of the transmission of the synchronization block may also refer to the extension of the period of the synchronization signal block. Hereinafter, the synchronization signal block of the first cell (or abbreviated as the first carrier) is referred to as the first synchronization signal block, and the first cell is the serving cell that stops transmitting the synchronization signal block. The first cell may be a special cell of the terminal device (for example, a primary cell PCell or a primary secondary cell PSCell), or a non-special cell (for example, an SCell). For example, the first cell is a special cell (SpCell) when the terminal device is in a connected state, or a cell selected or reselected when the terminal device is in an idle or inactive state. Embodiments of the present invention are not limited thereto. Thereby, the overhead of energy consumption on the network side can be saved, so the first cell may be referred to as an energy-saving cell (or an energy-saving cell / SSB-less cell). The synchronization signal block (also referred to as a synchronization signal and a PBCH block / Synchronization Signal and PBCH block, abbreviated as SSB) may include a primary synchronization signal (Primary Synchronization Signal, PSS), a secondary synchronization signal (Secondary Synchronization Signal, SSS), and / or a physical broadcast channel (Physical Broadcast Channel, PBCH).

[0044] In some embodiments, although the first cell stops transmitting the SSB, other cells having the same station address as the first cell can transmit the SSB. That is, the second cell (or, also referred to as the second carrier) may be another cell that transmits the synchronization signal block and has the same station address as the first cell. The synchronization signal block of the second cell is referred to as the second synchronization signal block. The second cell may be a special cell (e.g., a primary cell PCell or a primary secondary cell PSCell) of the terminal device, or may be a non-special cell (e.g., an SCell). The second cell may also be referred to as a reference cell or an anchor cell. It should be noted that the embodiments of the present invention are not limited thereto. That is, in 301, the terminal device receives the second synchronization signal block of the second cell transmitted by the network-side device.

[0045] In some embodiments, when the terminal device cannot successfully receive the first synchronization signal block transmitted by the network-side device (the transmission of the first SSB of the first cell is stopped), for example, when the transmission period of the first synchronization signal block exceeds a predetermined threshold, the second SSB transmitted by the second cell can provide downlink channel estimation information for the first cell, or it can be said that the terminal device can obtain the downlink channel estimation information of the first cell from the SSB of the second cell located at the same station address. The terminal device performs downlink reception on the first cell reference signal based on the second SSB, or determines the measurement result of the first cell. And the terminal device can perform random access in the first cell, wireless link monitoring (RLM) based on CSI-RS or SSB, beam failure detection (BFD), radio resource management (RRM) measurement, cell selection or reselection measurement, etc. In this way, the terminal device does not need to switch to other cells, and the terminal device that originally camped in the first cell also does not need to perform cell reselection. Therefore, it is possible to avoid the interruption of services and the increase in the load level of adjacent cells caused by the migration of the terminal device in the energy-saving state cell to the adjacent cells, and ensure that there is no degradation in the user experience when the cell enters the energy-saving state.

[0046] In some embodiments, the first synchronization signal block of the first cell and the second synchronization signal block of the second cell have a quasi-collocation (QCL) relationship, and the types of the QCL relationship include QCL type C and QCL type D. In particular, the first synchronization signal block and the second synchronization signal block having a quasi-collocation relationship have the same index. In other words, the first SSB has a quasi-collocation relationship with the second SSB of the same index, and this quasi-collocation relationship may be indicated by second indication information, which will be described later. Also, when the number of transmitted second synchronization signal blocks is less than the number of first synchronization signal blocks to be transmitted, the terminal cannot determine the measurement result of the first synchronization signal block based on the second synchronization signal block. Therefore, within the period of one synchronization signal block, the number of transmitted second synchronization signal blocks is not less than the number of first synchronization signal blocks to be transmitted, and the subcarrier spacing, period, and / or transmission power of the first synchronization signal block of the first cell and the second synchronization signal block of the second cell may be the same or different. Among them, the network-side device may transmit the SSB configuration information (for example, the configuration information of the first SSB and the second SSB) to the terminal side in advance. Among them, the configuration information can be represented as follows using the ASN.1 (Abstract Syntax Notation One) data format.

[0047]

Table 1

[0048] In some embodiments, the network-side device may be instructed by the first indication information to stop transmitting the first SSB that the network-side device should transmit. The first indication information can be represented by one or more bits, and the first indication information is further used to indicate the index of the first synchronization signal that should be transmitted and whose transmission is stopped. Among them, the network device of the first cell may transmit the first indication information before stopping the transmission of the first SSB, and the first indication information may be carried by system information or a dedicated RRC message.

[0049] For example, the first indication information may be a newly added information element in the system information or the dedicated RRC message. When the newly added information element is not included in the system information or the dedicated RRC signaling, it means that all SSBs of the first cell are transmitted normally. When the newly added information element is included in the system information or the dedicated RRC signaling, it means that the transmission of the first SSB of the first cell that should be transmitted is stopped. The value of the information element is further used to indicate the index of the first SSB that should be transmitted and whose transmission is stopped. For example, the information element can be represented by a bitmap. Each bit of the bitmap corresponds to the index of one SSB. When the value of the bit is 1, it means that the SSB with the index is transmitted normally. When the value of the bit is 0, it means that the transmission of the SSB with the index is stopped, and vice versa. Or the information element can also use an N-bit value to represent the index value (SSB index) of the SSB that should be transmitted and whose transmission is stopped. It should be noted that the embodiments of the present invention are not limited to these.

[0050] In some embodiments, the network-side device may instruct, by transmitting second indication information, that the terminal device can perform downlink reception for the first cell reference signal by means of the second synchronization signal block or determine the measurement result of the first cell. When the terminal device receives the second indication information, it indicates that the terminal device can perform downlink reception for the first cell reference signal by means of the second synchronization signal block or determine the measurement result of the first cell. The transmitted second indication information may indicate the identification (ID) information of the second cell. In other words, when the terminal device receives the second indication information indicating the identification information of the second cell, the terminal device can perform downlink reception for the first cell reference signal by means of the second synchronization signal block or determine the measurement result of the first cell. When the terminal device has not received the second indication information, it cannot perform downlink reception for the first cell reference signal by means of the second synchronization signal block or determine the measurement result of the first cell. Thus, when it is necessary for the terminal device to perform downlink reception for the first cell reference signal or determine the measurement result of the first cell, it is necessary to transmit a wake-up signal, thereby causing the transmission of the first SSB to be restored. Regarding the related embodiments of the wake-up signal, they will be described in the embodiments of the following second aspect.

[0051] In some embodiments, the second indication information may further be used to indicate that the first synchronization signal block and the second synchronization signal block have a quasi-collocation relationship so that the terminal device can perform downlink reception for the first cell reference signal by means of the second synchronization signal block or determine the measurement result of the first cell.

[0052] In some embodiments, the network device of the first cell may transmit the second indication information before stopping the transmission of the first SSB, and the second indication information may be carried by system information or a dedicated RRC message.

[0053] For example, the second indication information may be an information element newly added to the system information or a dedicated RRC message, include the identification information of the second cell, and the cell identification may be (NCGI or PCI). When the information element is not included in the system information or the dedicated RRC signaling, it indicates that the terminal device cannot perform downlink reception on the first cell reference signal by the second synchronization signal block or determine the measurement result of the first cell. When the information element is included in the system information or the dedicated RRC signaling, it indicates that the terminal device can perform downlink reception on the first cell reference signal by the second synchronization signal block or determine the measurement result of the first cell.

[0054] For example, the newly added information element may be a quasi-collocation cell identification information element, include the identification information of the second cell, and is used to indicate that the first synchronization signal block of the first cell and the second synchronization signal block of the second cell have a quasi-collocation relationship. When the information element is included in the system information or the dedicated RRC signaling, it indicates that the terminal device can perform downlink reception on the first cell reference signal by the second synchronization signal block or determine the measurement result of the first cell.

[0055] Note that the aforementioned network device that transmits or stops transmitting the first SSB of the first cell may be the same or different network device as the network device that transmits the second SSB of the second cell, and the network device that transmits the first indication information and the second indication information and receives the wake-up signal may also be the same or different network device as the aforementioned network device that transmits or stops transmitting the first SSB of the first cell.

[0056] In some embodiments, as described above, when receiving the second indication information, the terminal device can perform downlink reception on the first cell reference signal or determine the measurement result of the first cell based on the second synchronization signal block. For example, based on the second synchronization signal block, perform random access in the first cell, perform RLM / BFD / RRM measurements based on the CSI-RS or SSB of the first cell, and perform cell selection and / or reselection measurements on the first cell. The following will be described in detail.

[0057] In some embodiments, at 302, the terminal device can determine the measurement result of the first cell based on the second synchronization signal block, and the measurement result includes one of the received power (RSRP), received quality (RSRQ), and signal-to-noise ratio (SINR). Among them, the terminal device may use the first SSB (of the first cell) as the measurement target, or the second SSB (of the second cell) as the measurement target. The following will be described respectively.

[0058] On one hand, the terminal device uses the first SSB as the measurement target. When measuring the first SSB, the second measurement result of the second SSB is used as the first measurement result of the first SSB (having the same index as the second SSB). Among them, the measurement result includes the L1 measurement result for the first synchronization signal block or the L3 measurement result for the first synchronization signal block. Based on the first measurement result, the terminal device can perform random access, RLM / BFD / RRM measurements, and cell selection or reselection measurements. For the processes of random access, RLM / BFD / RRM measurements, and cell selection or reselection measurements, reference can be made to the prior art, and specifically, it will be described later.

[0059] On one side, when the first cell starts random access, the terminal device measures the second SSB and measures the L1 received power of the second SSB. The terminal device selects a first synchronization signal block for performing random access in the first cell based on the second measurement result of the second synchronization signal block (substituting or replacing the first measurement result of the first synchronization signal block). Alternatively, the terminal device selects a second synchronization signal block for performing random access based on the second measurement result of the second synchronization signal block, and determines the synchronization signal block associated with the PRACH resource of the first cell as the second synchronization signal block (with the same index), so that the terminal device can determine the PRACH resource of the first cell based on the selected second synchronization signal block.

[0060] On one side, when performing RLM / BFD based on the first synchronization signal block, the terminal device measures the second SSB and measures the L1 received power of the second SSB. The terminal device determines the synchronization signal block for radio link detection or beam failure detection based on the first synchronization signal block as the second synchronization signal block (with the same index). Thereby, the terminal device performs radio link failure detection or beam failure detection of the first cell based on the second measurement result of the second synchronization signal block.

[0061] On one side, when performing RRM measurement based on the first synchronization signal block, the terminal device measures the second SSB and measures the L3 received power, reception quality, or signal-to-noise ratio of the second SSB. The terminal device determines the synchronization signal block for RRM measurement based on the first synchronization signal block as the second synchronization signal block (with the same index), and the terminal device measures the second synchronization signal block based on the set parameters of the second synchronization signal block, thereby performing the measurement of radio resource management (RRM) of the first cell.

[0062] On one side, when performing cell selection, reselection, or RRM measurement on the first cell, the terminal device measures the first cell and measures the L3 received power, received quality, or signal-to-noise ratio of the first cell. The terminal device uses the measurement result of the second cell as the measurement result of the first cell.

[0063] On one side, when performing cell selection, reselection, or RRM measurement on the first cell, the terminal device measures the second cell and measures the L3 received power, received quality, or signal-to-noise ratio of the second cell. In this way, the terminal device determines the measurement result of the first cell by measuring the second cell.

[0064] Thereby, the terminal device can perform random access, RLM / BFD / RRM measurement, and cell selection or reselection measurement based on the measurement result of the second SSB or the second cell, which will be specifically described later.

[0065] In some embodiments, at 302, the terminal device can perform downlink reception on the first cell reference signal based on the second synchronization signal block, and the first cell reference signal includes CSI-RS. The CSI-RS and the first SSB have a QCL relationship, that is, the terminal device performs downlink reception on the CSI-RS having a QCL relationship with the first SSB based on the second SSB, and performs RLM / BFD / RRM measurement or non-competitive random access based on the received CSI-RS. Among them, the CSI-RS can be received based on the first SSB or based on the second SSB. Each will be described below.

[0066] On one side, when the terminal device receives the CSI-RS that has a quasi-collocation relationship with the first synchronization signal block, the terminal device uses the second downlink reception parameter for receiving the second synchronization signal block as the first downlink reception parameter for receiving the first synchronization signal block, and receives the CSI-RS based on the first downlink reception parameter. Among them, the downlink reception parameter includes Doppler offset, Doppler spread, average delay, delay spread, spatial reception parameter, etc. That is, the terminal device receives the first SSB with the second downlink reception parameter as the first downlink reception parameter, and receives the CSI-RS based on the first downlink reception parameter for receiving the first SSB.

[0067] On one side, when the terminal device receives the CSI-RS that has a quasi-collocation relationship with the first synchronization signal block, the terminal device determines that the quasi-collocation relationship between the CSI-RS and the first synchronization signal block of the first cell is the same as the quasi-collocation relationship between the CSI-RS and the second synchronization signal block of the second cell, and receives the CSI-RS based on the second downlink reception parameter for receiving the second synchronization signal. That is, the terminal device receives the second SSB without the need to receive the first SSB, and receives the CSI-RS based on the second downlink reception parameter for receiving the second SSB.

[0068] Thereby, the terminal device can perform RLM / BFD / RRM measurement or non-competitive random access based on the CSI-RS, which will be specifically described later.

[0069] (1) Regarding random access In the conventional NR system, for contention-based random access, it is necessary to select the SSB for random access based on the received power (SS-RSRP) of the SSB of the current random access start cell. First, select one SSB whose SS-RSRP is higher than a predetermined threshold, and then determine the random access opportunity (RO) based on the selected SSB, that is, select the next available random access opportunity corresponding to the SSB. After that, randomly select one preamble from the preamble set related to the SSB, and finally, start the random access procedure by transmitting the selected preamble on the corresponding resource of the selected random access opportunity. That is, each valid RO and the preamble sequence included therein can be mapped in association with the SSB. After selecting one SSB, select and transmit the preamble sequence on the corresponding RO resource based on the mapping rule from the SSB to the RO.

[0070] For a terminal device in the connected state, contention-based random access generally starts at the PCell or PSCell of the terminal device in the connected state. For example, during the RRC connection re-establishment procedure, when uplink synchronization is lost and there is uplink data arrived when in the RRC connected state, when uplink LBT fails, when scheduling request (SR) fails, when there is no available PUCCH resource for SR and there is uplink data arrived when in the RRC connected state, when there is a positioning need, etc.

[0071] For a terminal device in the idle / inactive state, the terminal device starts contention-based random access in the staying cell. For example, during the initial access in the RRC idle state, during the RRC connection recovery procedure in the RRC inactive state, when requesting other system information, during small-scale data transmission in the RRC inactive state, etc.

[0072] Also, when a terminal device in a connected state performs non-competitive random access configured by RRC and the network device configures dedicated random access resources based on SSB for the terminal device, the terminal device also needs to select an SSB for performing random access based on the received power of the SSB (SS-RSRP) of the current random access start cell. After selecting the SSB, the UE determines the next available random access opportunity (RO) corresponding to the SSB, and transmits the dedicated preamble corresponding to the SSB configured by the network in the RO.

[0073] Also, when a terminal device in a connected state performs non-competitive random access configured by RRC, the network can also configure dedicated random access resources based on CSI-RS for non-competitive random access. When the received power of the CSI-RS is higher than a predetermined threshold, the terminal device selects the dedicated preamble corresponding to the CSI-RS and the RO for transmitting the preamble. For example, when the terminal device detects beam failure, it starts non-competitive random access for beam failure recovery. In this case, the network can configure random access resources based on CSI-RS instead of configuring dedicated random access resources based on SSB for the terminal device.

[0074] The SS-RSRP that needs to be measured in the random access procedure needs to be based on the synchronization reference signal (SS) in the SSB. Therefore, when the PCell or PSCell cell of the terminal device or the cell where the terminal device camps stops transmitting the SSB, the terminal device cannot complete the random access normally.

[0075] In an embodiment of the present invention, when the first cell stops transmitting the first SSB, when a terminal device in the connected state is in the first cell (PCell / PSCell), or when an idle / inactive terminal device discloses random access in the first cell (staying cell), as one method, when the terminal device measures the reception power (SS-RSRP) of the first SSB, the SS-RSRP of the first SSB is calculated using the SS-RSRP of the second SSB, and based on the measurement result (SS-RSRP) of the first SSB, a first synchronization signal block for performing random access is selected. As another method, the terminal device measures the SS-RSRP of the second SSB, and based on the SS-RSRP of the second SSB, a first synchronization signal block for performing random access is selected. For example, one first SSB having the same index as the second SSB with an SS-RSRP higher than a predetermined threshold is selected for random access.

[0076] In some embodiments, the terminal device selects a second SSB for random access based on the SS-RSRP of the second SSB, and the terminal device determines the synchronization signal block associated with the PRACH resource of the first cell as the second synchronization signal block, that is, the SSB index corresponding to the SSB in the PRACH resource setting (for example, RO or preamble resource setting) refers to the SSB index of the second synchronization signal block. Among them, the PRACH resource setting includes the PRACH of CBRA in RACH-ConfigCommon setting, the PRACH of CFRA in RACH-ConfigDedicated setting, and the PRACH resource setting of BFR in BeamFailureRecoveryConfig setting. For example, when the terminal device starts contention-based random access in the first cell, based on the PRACH resource setting in RACH-ConfigCommon and the index of the second SSB of the selected second cell, it determines the random access opportunity (RO) of the PRACH resource belonging to the first cell corresponding to the index, and then randomly selects one preamble belonging to the first cell from the preamble group related to the index of the second SSB of the second cell, and finally transmits the selected preamble on the resource corresponding to the PRACH random access opportunity of the selected first cell. For example, when the terminal device starts non-contention-based random access based on SSB in the first cell, after selecting the second SSB, the terminal device selects the random access opportunity (RO) of the PRACH resource belonging to the first cell based on the PRACH resource setting in RACH-ConfigDedicated, and determines the dedicated preamble belonging to the first cell corresponding to the index based on the index of the selected second SSB.

[0077] In an embodiment of the present invention, when a network device sets a dedicated random access resource based on CSI-RS for non-competitive random access, the terminal device performs downlink reception on CSI-RS that has a quasi-collocation relationship with the first synchronization signal block based on the second synchronization signal block. When the terminal device receives the CSI-RS that has a quasi-collocation relationship with the first synchronization signal block, the second downlink reception parameter for receiving the second synchronization signal block is used as the first downlink reception parameter for receiving the first synchronization signal block, and the CSI-RS is received based on the first downlink reception parameter. Alternatively, the terminal device determines that the quasi-collocation relationship between the CSI-RS and the synchronization signal block of the first cell is the same as the quasi-collocation relationship between the CSI-RS and the synchronization signal block of the second cell, and receives the CSI-RS based on the second downlink reception parameter for receiving the second synchronization signal. When the received power of the CSI-RS is higher than a predetermined threshold, the terminal device selects a dedicated preamble corresponding to the CSI-RS and an RO for transmitting the preamble. For example, when detecting a beam failure, a non-competitive based Beam failure recovery random access is started.

[0078] (2) Regarding RLM / BFD / RRM measurements based on CSI-RS or SSB (Case 1: Measurements based on SSB) In the prior art, the terminal device is set to perform radio link or beam failure detection based on the first cell SSB, that is, it is set to perform L1 received power measurement on the first cell SSB. However, when the network device does not transmit the first cell SSB, the terminal device cannot complete RLM or BFD normally.

[0079] In an embodiment of the present invention, when the terminal device measures the first synchronization signal block, the second measurement result of the second synchronization signal block is used as the first measurement result of the first synchronization signal block. Alternatively, the terminal device determines the synchronization signal block for radio link detection or beam failure detection based on the first SSB as the second synchronization signal block, and the terminal device evaluates the radio link failure or beam failure of the first cell based on the second measurement result of the second synchronization signal block.

[0080] For example, when a terminal device in a connected state performs RLM and BFD measurements in a first cell where the transmission of the first SSB has been temporarily stopped, the terminal device determines (considers) that "the SSB-based reference signal in the RLM / BFD resource setting for the first cell points to the second SSB", that is, "the index related to the SSB for RLM / BFD of the first cell is the index of the second SSB". For example, the RLM reference signal setting information can be represented as follows in the ASN.1 data format.

[0081] [Table 2] That is, when the first cell stops transmitting the first SSB, the terminal device considers that "the ssb-Index in the RLM reference signal resource setting information set for the first cell points to the index of the second SSB", and evaluates the radio link failure or beam failure of the first cell based on the received power of the second synchronized SSB.

[0082] In the prior art, the terminal device is set to perform RRM measurements based on the first cell SSB, including measurements on the L3 received power, received quality, or signal-to-noise ratio of the first cell SSB. However, when the first cell does not transmit the first SSB, the terminal device cannot complete the RRM measurements normally.

[0083] In an embodiment of the present invention, when the terminal device measures the first synchronization signal block, it uses the second measurement result of the second synchronization signal block as the first measurement result of the first synchronization signal block. Alternatively, the terminal device determines that the synchronization signal block for radio resource management measurement is the second synchronization signal block, and the terminal device measures the second synchronization signal block based on the set parameters of the second synchronization signal block to perform radio resource management (RRM) measurement of the first cell. Alternatively, the terminal device measures the second cell and reports the measurement result of the second cell to the network as the measurement result of the first cell. In some other embodiments, when the terminal device only reports the measurement result of the second cell, the network side can use the RRM measurement result of the second cell as the measurement result of the first cell.

[0084] (Case 2: Measurement based on CSI-RS) In an embodiment of the present invention, when the above-mentioned RLM / BFD / RRM measurement is a measurement based on CSI-RS, the terminal device performs downlink reception on the CSI-RS that has a quasi-collocation relationship with the first synchronization signal block based on the second synchronization signal block. When the terminal device receives the CSI-RS that has a quasi-collocation relationship with the first synchronization signal block, it uses the second downlink reception parameter for receiving the second synchronization signal block as the first downlink reception parameter for receiving the first synchronization signal block, and receives the CSI-RS based on the first downlink reception parameter. Alternatively, the terminal device determines that the quasi-collocation relationship between the CSI-RS and the synchronization signal block of the first cell is the same as the quasi-collocation relationship between the CSI-RS and the synchronization signal block of the second cell, and receives the CSI-RS based on the second downlink reception parameter for receiving the second synchronization signal, and then completes the measurement based on CSI-RS.

[0085] For example, the TCI state information set for the CSI-RS resource can be represented as follows in the ASN.1 data format.

[0086]

Table 3

[0087] For example, the RRM measurement setting information of the CSI-RS that has a quasi-collocation relationship with the first cell SSB can be expressed as follows in the ASN.1 data format.

[0088] [Table 4] Among them, when the CellId field indicates the first cell identifier, the terminal can consider that the SSB with the same index as the SSB that has a quasi-collocation relationship with the CSI-RS and is indicated by the associatedSSB field is the second cell SSB. Alternatively, when the CellId indicates the first cell identifier, the terminal device can consider that the CSI-RS has a quasi-collocation relationship with the second SSB with the same index.

[0089] (3) Regarding cell selection and / or reselection In the prior art, when a terminal device in the idle or inactive state performs cell selection, the terminal device needs to measure the SSB of its serving first cell and calculate parameter values indicating cell quality, such as Srxlev and Squal, based on the measurement results and cell selection parameters. When the parameter values do not meet the predetermined conditions (S standard (criterion)), it is determined that the serving cell or the frequency where the serving cell is located is not a candidate cell and / or candidate frequency for cell selection. Otherwise, it is determined that the serving cell or the frequency where the serving cell is located is a candidate cell and / or candidate frequency for cell selection.

[0090] For example, the S standard is such that Srxlev > 0 and Squal > 0, and Srxlev = Q rxlevmeas -(Q rxlevmin + Q rxlevminoffset ) - P compensation - Q offsettemp ; and Squal = Q qualmeas -(Q qualmin + Q qualminoffset ) - Q offsettemp is the case.

[0091] Among them, Srxlev represents the cell selection reception level value, Squal represents the cell selection quality, Q offsettemp represents the offset temporarily applied to the cell, Q rxlevmeas represents the cell average received power value obtained by measuring and calculating SS-RSRP using the SSB, P compensation represents the compensation between the uplink and downlink powers, is related to the maximum transmission power p-Max set by the cell, and Q qualmeas represents the cell quality measured using the SSB. Then, based on the candidate cells and / or candidate frequencies, one suitable cell is selected to be the cell selected by the terminal device, thereby completing the cell selection procedure.

[0092] In the prior art, in the cell reselection procedure, it measures the serving cell and determines whether to perform measurements on adjacent cells. For intra-band (the same frequency), it determines whether the serving cell quality is higher than the threshold S IntraaSearchP or the threshold S IntraaSearchQ If it is higher than the threshold, it does not perform intra-band measurements on adjacent cells; otherwise, it performs intra-band measurements. Also, for different frequencies, if the cell or frequency priority of a different frequency is higher than the current serving cell or frequency, the terminal device performs measurements on the different frequency with a higher priority. If the cell or frequency priority of a different frequency is lower than or equal to the current serving cell or frequency, when the serving cell quality is higher than the threshold S nonIntraSearchP or SnonIntraSearchQ Determine whether it is higher than, and if it is higher than the threshold value, do not perform measurements of different frequencies for adjacent cells (low priority), and if not, perform measurements of different frequencies. The above S nonIntraSearchP is related to cell quality and is the threshold value corresponding to the reference signal received power (RSRP), S nonIntraSearchQ is related to cell quality and is the threshold value corresponding to the reference signal received quality (RSRQ), and it is necessary to perform reselection evaluation after measurement.

[0093] For intra-band (same frequency) and different frequencies of the same priority, it may be considered to calculate the following R cell sorting criteria based on the measurement results.

[0094] Serving cell R s =Q meas,s +Q hyst -Qoffset temp Adjacent cell R n =Q meas,n -Qoffset-Qoffset temp Among them, Q meas represents the measurement result, and Qoffset temp represents the temporary cell offset value (offset) applied when connection fails.

[0095] Perform sorting on the cells based on the calculation results, and reselect the cell with the highest rank. If the cell with the highest rank is in the barred state or is not a suitable cell for a specific reason, do not consider the cell as a candidate cell for cell reselection, and if not, reselect the cell.

[0096] For different frequencies of different priorities, if the quality of one cell on a different frequency higher than the current serving cell or the priority of frequency reselection within a time period is higher than the threshold value Thresh X,HighPWhen it is higher, reselect the cell on the high - priority frequency or set the cell on the high - priority frequency as the best cell. Also, when the quality of one cell on a different frequency lower than the priority of the current serving cell or frequency reselection within a time period is higher than the threshold Thresh X,LowP and the quality of the current serving cell is lower than the threshold Thresh Serving,Low P, reselect the cell on the low - priority frequency or set the cell on the low - priority frequency as the best cell. When multiple cells satisfy the above - mentioned criteria, the terminal device can reselect the cell with the highest rank on the highest - priority frequency that satisfies the above - mentioned criteria, or set the cell with the highest rank on the highest - priority frequency that satisfies the above - mentioned criteria as the best cell. When the reselected cell or the best cell obtained based on the above - mentioned process is in a barred state or is not a suitable cell for a specific reason, do not consider the cell as a candidate cell for cell reselection. Otherwise, reselect the cell.

[0097] Therefore, in the above - mentioned cell selection or reselection process, it can be said that the measurement result of the first SSB is required, or the measurement result of the first cell is required. When the transmission of the first SSB of the first cell is stopped, the terminal device cannot complete cell selection or reselection normally.

[0098] In an embodiment of the present invention, when a terminal device in an idle or inactive state performs cell selection or reselection measurement, if a first cell stops transmitting a first SSB, the cell selection or reselection measurement by the terminal device is based on a second cell or a second SSB of the second cell. For example, when measuring the first synchronization signal block, the terminal device uses the second measurement result of the second synchronization signal block as the first measurement result of the first synchronization signal block (with the same index), and the measurement result includes the L3 received power or received quality for the SSB. Alternatively, when measuring the first cell, the terminal device uses the measurement result of the second cell as the measurement result of the first cell. Or, the terminal device determines the measurement result of the first cell by measuring the second cell, and then performs cell selection or reselection based on the determined measurement result, and the measurement result includes the L3 received power or received quality for the cell.

[0099] As can be seen from the above embodiments, the terminal device can perform downlink reception on the reference signal of the energy-saving cell based on the synchronization signal block of another cell, or determine the measurement result of the energy-saving cell, and the terminal device can perform random access, RLM / BFD / RRM measurement based on CSI-RS or SSB, cell selection or reselection measurement in the energy-saving cell. In this way, the terminal device does not need to switch to other cells, and the terminal device that was originally camped in the energy-saving cell also does not need to perform cell reselection, so as to avoid service interruption and an increase in the load level of adjacent cells caused by the migration of the terminal device in the energy-saving cell to adjacent cells, and ensure that there is no degradation in user experience when the cell enters the energy-saving state.

[0100] <Embodiment of the second aspect> In an embodiment of the present invention, an information transmission method is provided and described from the perspective of the terminal device. Here, the duplicate description of the same content as in the embodiment of the first aspect is omitted.

[0101] FIG. 4 is a diagram showing an information transmission method in an embodiment of the present invention, which is applied to a terminal device. As shown in FIG. 4, the method includes the following operations (steps).

[0102] 401: When the terminal device starts random access in the first cell, or performs RLM / BFD / RRM measurement based on the first synchronization signal block of the first cell, or performs cell selection or reselection measurement on the first cell, and the terminal device cannot successfully receive or measure the first synchronization signal block, a first wake-up signal is transmitted to the network-side device, and the wake-up signal is used to instruct the network-side device to resume the transmission of the first synchronization signal block of the first cell.

[0103] In some embodiments, in 401, when the terminal device does not receive the second indication information from the network-side device transmission, and the terminal device starts random access in the first cell, or performs RLM / BFD / RRM measurement based on the first synchronization signal block of the first cell, or performs cell selection or reselection measurement on the first cell, the first wake-up signal is transmitted to the network-side device, for example, carried by a specified PRACH opportunity or random access preamble. For the implementation method of the second indication information, reference can be made to the embodiments of the first aspect, and the detailed description thereof is omitted here.

[0104] That is, when the terminal device has not received the second indication information, it means that the terminal device cannot perform downlink reception of the first cell reference signal based on the second SSB or determine the measurement result of the first cell. When the terminal device needs to start random access, or perform RLM / BFD / RRM measurement based on the first synchronization signal block of the first cell, or perform cell selection or reselection measurement on the first cell, it is necessary to transmit a first wake-up signal to resume the transmission of SSB in the first cell.

[0105] In some embodiments, the method may further include: when the terminal device fails to successfully receive or measure the second synchronization signal block of the second cell, the terminal device sends a second wake-up signal to the network-side device, and the second wake-up signal is used to instruct the network-side device to resume transmitting the second synchronization signal block of the second cell.

[0106] Among them, the first synchronization signal block of the first cell and the second synchronization signal block of the second cell have a quasi-collocation (QCL) relationship.

[0107] In some embodiments, for the implementation manners of the first cell, second cell, first SSB, and second SSB, reference may be made to the embodiments of the first aspect, and detailed descriptions thereof are omitted here.

[0108] In some embodiments, the method may further include: the terminal device receives first indication information. For the implementation manner of the first indication information, reference may be made to the embodiments of the first aspect, and detailed descriptions thereof are omitted here.

[0109] Also, the receiving target of the first and second wake-up signals, the execution entity that sends the first indication information and second indication information, the network device that stops transmitting the first SSB, and the network device that transmits the second SSB may be the same or different network devices.

[0110] In some embodiments, the method may further include: 402: the terminal device receives the first synchronization signal block transmitted by the network-side device after the recovery of transmission; and 403: perform random access based on the first synchronization signal block, or perform RLM / BFD / RRM measurement based on the first synchronization signal block of the first cell, or perform cell selection or reselection measurement on the first cell.

[0111] Note that for the implementation manners of 402 - 403, the prior art can be referred to, and the detailed description thereof is omitted here.

[0112] In addition, the terminal device can also receive a second synchronization signal block transmitted by the network - side device after the transmission recovery.

[0113] As can be seen from the above - mentioned embodiments, the terminal device transmits a wake - up signal, so that the energy - saving cell that has stopped transmitting the SSB resumes the transmission of the SSB, and based on the SSB whose transmission has been resumed, the terminal device can perform random access in the energy - saving cell, RLM / BFD / RRM measurements based on CSI - RS or SSB, cell selection or reselection measurements, etc. In this way, the terminal device does not need to switch to other cells, and the terminal device that originally camped in the energy - saving cell also does not need to perform cell reselection. Therefore, it is possible to avoid the interruption of services and the increase in the load level of adjacent cells caused by the migration of the terminal device in the energy - saving cell to adjacent cells.

[0114] <Embodiment of the third aspect> In the embodiments of the present invention, an information transmission method is provided. This method is the processing of the network - side device corresponding to the methods in the embodiments of the first aspect and the second aspect, and here the duplicate descriptions of the same content as in the embodiments of the first aspect and the second aspect are omitted.

[0115] FIG. 5 is a diagram showing the information transmission method in the embodiments of the present invention. As shown in FIG. 5, the method includes the following operations (steps).

[0116] 501: The network - side device stops transmitting the first synchronization signal block of the first cell to be transmitted to the terminal device, Among them, the first synchronization signal block of the first cell has a quasi - co - location (QCL) relationship with the second synchronization signal block of the second cell.

[0117] In some embodiments, for the implementation manners of the first cell, the second cell, the first SSB, and the second SSB, reference may be made to the embodiments of the first aspect, and the detailed description thereof is omitted herein.

[0118] In some embodiments, the method may further include the following, that is, the network-side device sends first indication information to the terminal device. For the implementation manner of the first indication information, reference may be made to the embodiments of the first aspect, and the detailed description thereof is omitted herein.

[0119] In some embodiments, the network-side device sends second indication information to the terminal device. For the implementation manner of the second indication information, reference may be made to the embodiments of the first aspect, and the detailed description thereof is omitted herein.

[0120] In some embodiments, when the second indication information is not sent, that is, when the terminal device cannot perform downlink reception of the first cell reference signal or determine the measurement result of the first cell by the second SSB, the method may further include the following, that is, 502: The network-side device receives the first wake-up signal sent by the terminal device, and the first wake-up signal is used to instruct the network-side device to resume transmission of the first synchronization signal block of the first cell.

[0121] In some embodiments, the method further includes the following steps, that is, 503: The network-side device resumes transmission of the first synchronization signal block of the first cell to the terminal device.

[0122] In some embodiments, before transmitting the RRC reconfiguration message, the network-side device resumes the transmission of the first synchronization signal block of the first cell, and the RRC reconfiguration message is an RRC reconfiguration message for resynchronization of a master cell group (MCG) or a secondary cell group (SCG). Since the non-competitive random access indicated by the RRC reconfiguration message for MCG / SCG resynchronization is initiated by the network-side device, the non-competitive random access for MCG / SCG resynchronization cannot be based on CSI-RS and can only be based on SSB. Therefore, the network device needs to resume the transmission of the first SSB before transmitting the RRC reconfiguration message, and the terminal device can complete the non-competitive random access indicated by the RRC reconfiguration message for MCG / SCG resynchronization based on the first SSB whose transmission has been resumed.

[0123] FIG. 6 is a diagram showing an information transmission method according to an embodiment of the present invention. As shown in FIG. 6, the method includes the following steps.

[0124] 601: The network-side device transmits or stops the transmission of the second synchronization signal block of the second cell to be transmitted to the terminal device, wherein the first synchronization signal block of the first cell and the second synchronization signal block of the second cell have a quasi-collocation (QCL) relationship.

[0125] In some embodiments, the method may further include the following, that is, 602: The network-side device receives the second wake-up signal transmitted by the terminal device, and the second wake-up signal is also used to instruct the network-side device to resume the transmission of the second synchronization signal block of the second cell.

[0126] In some embodiments, the method may further include the following steps, that is, 603: The network-side device resumes transmitting the second synchronization signal block of the second cell to the terminal device.

[0127] In some embodiments, the network-side devices in FIGS. 5 and 6 may be the same network device or different network devices, but the embodiments of the present invention are not limited thereto.

[0128] The above-described embodiments are for exemplarily explaining the embodiments of the present invention, but the present invention is not limited thereto, and further, appropriate modifications can be made based on the above-described embodiments. For example, each of the above-described embodiments may be implemented alone, or a plurality of the above-described embodiments may be combined and used.

[0129] <Embodiment of the Fourth Aspect> In an embodiment of the present invention, an information transmission device is provided. The device may be, for example, a network device, or one or more components or assemblies provided in the network device. The device in the embodiment of the present invention corresponds to the method in the embodiment of the third aspect, and here, the duplicate description of the same content as in the embodiment of the third aspect is omitted.

[0130] FIG. 7 is a diagram showing an example of an information transmission device in an embodiment of the present invention. As shown in FIG. 7, the information transmission device 700 includes the following.

[0131] Second transmission unit 701: stops transmitting the first synchronization signal block of the first cell to be transmitted to the terminal device; and transmits the second synchronization signal block of the second cell to be transmitted to the terminal device, or stops transmitting the second synchronization signal block of the second cell to be transmitted; Among them, the first synchronization signal block of the first cell and the second synchronization signal block of the second cell have a quasi-collocation (QCL) relationship.

[0132] In some embodiments, the second transmission unit is further used to transmit first indication information and / or second indication information. Note that for the first indication information and / or second indication information, reference may be made to the embodiments of the first aspect.

[0133] In some embodiments, the apparatus further includes the following, that is, A third receiving unit (not shown): receives the first wake-up signal transmitted by the terminal device, and the first wake-up signal is also used to instruct the recovery of the transmission of the first synchronization signal block of the first cell; or, receives the second wake-up signal transmitted by the terminal device, and the second wake-up signal is used to instruct the recovery of the transmission of the second synchronization signal block of the second cell.

[0134] In some embodiments, the second transmission unit 701 resumes the transmission of the first synchronization signal block of the first cell or the second synchronization signal block of the second cell to the terminal device.

[0135] In some embodiments, the second transmission unit 701 recovers the transmission of the first synchronization signal block of the first cell before transmitting the RRC reconfiguration message, and the RRC reconfiguration message is an RRC reconfiguration message for the resynchronization of MCG / SCG.

[0136] Note that for the implementation manner of the second transmission unit 701, reference may be made to the embodiments of the third aspect, and the detailed description thereof is omitted here.

[0137] The embodiments of the present invention have been exemplarily described above, but the present invention is not limited thereto, and further, appropriate modifications can be made based on the above embodiments. For example, each of the above embodiments can be used alone, or a plurality of the above embodiments can be combined and used.

[0138] Note that although the components or modules related to the present invention have been described above, the present invention is not limited thereto. The information transmission device 700 may further include other components or modules, and specific details of these components or modules can be referred to related technologies. Also, each of the above-described components or modules may be implemented by hardware such as a processor, a memory, a transmitter, a receiver, etc., but the implementation of the present invention is not limited thereto.

[0139] <Example of the Fifth Aspect> In an embodiment of the present invention, an information processing device is provided. The device may be, for example, a terminal device, or one or more components or assemblies provided in a terminal device. The device in the embodiment of the present invention corresponds to the method of the embodiment of the first aspect or the second aspect. Here, duplicate descriptions of the same content as in the embodiment of the first aspect or the second aspect are omitted.

[0140] FIG. 8 is a diagram showing an example of an information processing device in an embodiment of the present invention. As shown in FIG. 8, the information processing device 800 includes the following.

[0141] First receiving unit 801: Receiving a second synchronization signal block (SSB) of a second cell transmitted by a network-side device; and First processing unit 802: Performing downlink reception on a first cell reference signal or determining a measurement result of a first cell based on the second synchronization signal block, Among them, the first synchronization signal block of the first cell and the second synchronization signal block of the second cell have a quasi-collocation (QCL) relationship.

[0142] In some embodiments, when the first receiving unit fails to successfully receive the first synchronization signal block transmitted by the network-side device, the first processing unit performs downlink reception on the first cell reference signal or determines the measurement result of the first cell based on the second synchronization signal block.

[0143] In some embodiments, within the period of one synchronization signal block, the number of transmissions of the second synchronization signal block is not less than the number of the first synchronization signal blocks to be transmitted.

[0144] In some embodiments, a first synchronization signal block and a second synchronization signal block having a quasi-collocation relationship have the same index.

[0145] In some embodiments, the first receiving unit is further used to receive first indication information transmitted by a network-side device, and the first indication information is used to indicate to stop transmitting the first synchronization signal block to be transmitted.

[0146] In some embodiments, the first indication information is further used to indicate the index of the first synchronization signal block whose transmission is to be stopped.

[0147] In some embodiments, the first receiving unit is further used to receive second indication information transmitted by a network-side device, and the second indication information is used to indicate the identification information of the second cell, or is used to indicate that the first synchronization signal block and the second synchronization signal block have a quasi-collocation relationship. Thereby, the terminal device performs downlink reception on the first cell reference signal based on the second synchronization signal block or determines the measurement result of the first cell.

[0148] In some embodiments, the first cell is a special cell (SpCell) when the terminal device is in a connected state, or is a cell selected or reselected when the terminal device is in an idle or inactive state.

[0149] In some embodiments, when measuring the first synchronization signal block, the first processing unit uses the second measurement result of the second synchronization signal block as the first measurement result of the first synchronization signal block.

[0150] In some embodiments, the measurement result includes an L1 measurement result for the first synchronization signal block or an L3 measurement result for the first synchronization signal block.

[0151] In some embodiments, the first processing unit selects a first synchronization signal block for performing random access in the first cell based on a second measurement result of the second synchronization signal block; or the first processing unit selects a second synchronization signal block for performing random access based on a second measurement result of the second synchronization signal block, and determines the synchronization signal block associated with the PRACH resource of the first cell as the second synchronization signal block.

[0152] In some embodiments, the first processing unit determines the synchronization signal block for radio link detection or beam failure detection based on the first synchronization signal block as the second synchronization signal block, and performs radio link failure detection or beam failure detection of the first cell based on a second measurement result of the second synchronization signal block.

[0153] In some embodiments, the first processing unit determines the synchronization signal block for radio resource management measurement based on the first synchronization signal block as the second synchronization signal block, and the terminal device performs radio resource management (RRM) measurement of the first cell by measuring the second synchronization signal block based on the set parameters of the second synchronization signal block.

[0154] In some embodiments, when the first processing unit measures the first cell, it uses the measurement result of the second cell as the measurement result of the first cell, or measures the second cell to determine the measurement result of the first cell.

[0155] In some embodiments, the first processing unit performs downlink reception on a CSI-RS that has a quasi-collocation relationship with the first synchronization signal block based on the second synchronization signal block.

[0156] In some embodiments, when the first processing unit receives the CSI-RS that has a quasi-collocation relationship with the first synchronization signal block, the second downlink reception parameter for receiving the second synchronization signal block is set as the first downlink reception parameter for receiving the first synchronization signal block, and the CSI-RS is received based on the first downlink reception parameter. Alternatively, the first processing unit determines that the quasi-collocation relationship between the CSI-RS and the synchronization signal block of the first cell is the same as the quasi-collocation relationship between the CSI-RS and the synchronization signal block of the second cell, and receives the CSI-RS based on the second downlink parameter for receiving the second synchronization signal.

[0157] FIG. 9 is a diagram showing an example of an information transmission device according to an embodiment of the present invention. As shown in FIG. 9, the information transmission device 900 includes the following.

[0158] First transmission unit 901: When the terminal device starts random access in the first cell, or performs RLM / BFD / RRM measurement based on the first synchronization signal block of the first cell, or performs cell selection or reselection measurement on the first cell, and the terminal device fails to successfully receive or measure the first synchronization signal block, a first wake-up signal is transmitted to the network-side device, and the first wake-up signal is used to instruct the network-side device to resume transmission of the first synchronization signal block of the first cell.

[0159] In some embodiments, when the terminal device has not received the second indication information for the network - side device transmission, and the terminal device starts random access in the first cell, or performs RLM / BFD / RRM measurement based on the first synchronization signal block of the first cell, or performs cell selection or reselection measurement on the first cell, the first transmission unit transmits the first wake - up signal to the network - side device, wherein the second indication information is used to indicate the identification information of the second cell, or is used to indicate that the first synchronization signal block has a quasi - co - location relationship with the second synchronization signal block. Thereby, the terminal device performs downlink reception on the first cell reference signal based on the second synchronization signal block or determines the measurement result of the first cell.

[0160] In some embodiments, when the first transmission unit is unable to successfully receive or measure the second synchronization signal block of the second cell by the terminal device, the first transmission unit transmits a second wake - up signal to the network - side device, and the second wake - up signal is used to instruct the network - side device to resume the transmission of the second synchronization signal block of the second cell.

[0161] In some embodiments, the apparatus further includes the following (not shown), namely, A second receiving unit: receiving the first synchronization signal block transmitted by the network - side device after the recovery of the transmission; and A second processing unit: performing at least one of random access, RLM / BFD / RRM measurement, and cell selection or reselection measurement based on the first synchronization signal block.

[0162] In some embodiments, the apparatus further includes the following (not shown), namely, A third receiving unit: receiving the first indication information or the second indication information for the network device transmission. For the implementation manners of the first indication information and the second indication information, reference can be made to the embodiments of the first aspect, and the detailed description thereof is omitted here.

[0163] The above has illustratively described the embodiments of the present invention. However, the present invention is not limited thereto, and furthermore, appropriate modifications can be made based on each of the above-described embodiments. For example, each of the above-described embodiments may be used alone, or a plurality of the above-described embodiments may be used in combination.

[0164] In addition, although each component or module related to the present invention has been described above, the present invention is not limited thereto. The information processing apparatus 800 or the information transmission apparatus 900 may further include other components or modules, and for the specific content of these components or modules, reference can be made to related technologies. Also, each of the above-described components or modules may be realized by hardware such as a processor, a memory, a transmitter, a receiver, etc., but the implementation of the present invention is not limited thereto.

[0165] <Embodiment of the Sixth Aspect> In an embodiment of the present invention, a communication system is further provided, which includes network devices and terminal devices.

[0166] In some embodiments, the network device includes the device described in the embodiment of the fourth aspect and is configured to execute the method described in the embodiment of the third aspect. Since the method is described in detail in the embodiment of the third aspect, its content is incorporated herein and the detailed description thereof is omitted here.

[0167] In some embodiments, the terminal device includes the device described in the embodiment of the fifth aspect and is configured to execute the method described in the embodiment of the first or second aspect. Since the method is described in detail in the embodiment of the first or second aspect, its content is incorporated herein and the detailed description thereof is omitted here.

[0168] In an embodiment of the present invention, a network device, for example, a gNB (base station of NR), etc. is further provided.

[0169] FIG. 10 is a diagram showing a network device in an embodiment of the present invention. As shown in FIG. 10, the network device 1000 may include a central processing unit (CPU) 1001 and a memory 1002, and the memory 1002 is connected to the central processing unit 1001. Among them, the memory 1002 can store various data, and can also store a program for information processing, and under the control of the central processing unit 1001, execute the program to receive various information transmitted by the terminal device and transmit various information to the terminal device.

[0170] In some embodiments, the functions of the device described in the embodiment of the fourth aspect can be integrated into the central processing unit 1001, and the central processing unit 1001 is configured to execute a program to execute the method described in the embodiment of the third aspect, the content of which is incorporated herein and the detailed description thereof is omitted here.

[0171] In some other embodiments, the device described in the embodiment of the fourth aspect may be arranged independently of the central processing unit 1001. For example, the device described in the embodiment of the fourth aspect may be configured as a chip connected to the central processing unit 1001, and the functions of the device described in the embodiment of the fourth aspect may be realized under the control of the central processing unit 1001.

[0172] Also, as shown in FIG. 10, the network device 1000 may further include a transceiver 1003, an antenna 1004, etc. Among them, the functions of these components are similar to those in the prior art, so the detailed description thereof is omitted here. Note that the network device 1000 does not necessarily include all the components shown in FIG. 10, and the network device 1000 may further include components not shown in FIG. 10, and reference can be made to the prior art for this.

[0173] In an embodiment of the present invention, a terminal device, for example, a UE, is further provided.

[0174] FIG. 11 is a diagram showing a terminal device according to an embodiment of the present invention. As shown in FIG. 11, the terminal device 1100 may include a processor 1101 and a memory 1102. The memory 1102 stores data and programs and is connected to the processor 1101. It should be noted that this figure is only an example, and furthermore, by supplementing or replacing this structure with other types of structures, a telecommunication function or other functions can be realized.

[0175] In some embodiments, the functions of the device in the embodiment of the fifth aspect can be integrated into the processor 1101. Among them, the processor 1101 may be configured to execute a program to implement the method described in the embodiment of the first or second aspect. The content is incorporated herein and the detailed description thereof is omitted here.

[0176] In some other embodiments, the device in the embodiment of the fifth aspect may be arranged separately from the processor 1101. For example, the device in the embodiment of the fifth aspect may be configured as a chip connected to the processor 1101, and the functions of the device in the embodiment of the fifth aspect may be realized under the control of the processor 1101.

[0177] As shown in FIG. 11, the terminal device 1100 may further include a communication module 1103, an input unit 1104, a display 1105, a power supply 1106, etc. Among them, the functions of these components are similar to those in the prior art, so the detailed description thereof is omitted here. It should be noted that the terminal device 1100 does not necessarily include all the components shown in FIG. 11. In addition, the terminal device 1100 may further include components not shown in FIG. 11, and related technologies can be referred to for this.

[0178] In an embodiment of the present invention, a computer program is further provided. When the program is executed on the terminal device, the program causes the terminal device to execute the method described in the embodiment of the first or second aspect.

[0179] In an embodiment of the present invention, a storage medium storing a computer program is further provided, wherein the computer program causes a terminal device to execute the method described in the embodiment of the first or second aspect.

[0180] In an embodiment of the present invention, a computer program is further provided, wherein when the program is executed by a network device, the program causes the network device to execute the method described in the embodiment of the third aspect.

[0181] In an embodiment of the present invention, a storage medium storing a computer program is further provided, wherein the computer program causes a network device to execute the method described in the embodiment of the third aspect.

[0182] Also, the above-described apparatus and method may be implemented by software or hardware, or may be implemented by a combination of hardware and software. The present invention further relates to a computer-readable program as follows, that is, when the program is executed by a logic component, the logic component realizes the above-described apparatus or component, or realizes each of the above-described methods or steps by the logic component. The logic component may be, for example, an FPGA (Field Programmable Gate Array), a microprocessor, a processor used in a computer, or the like. The present invention further relates to a storage medium storing the above-described program, such as a hard disk, a magnetic disk, an optical hard disk, a DVD, a flash memory, or the like.

[0183] Furthermore, one or more combinations of the functional blocks described in the drawings and / or one or more combinations of the functional blocks may be implemented as 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 component, discrete gate or transistor logic component, discrete hardware assembly or any other suitable combination for performing the functions described herein. Also, one or more combinations of the functional blocks described in the drawings and / or one or more combinations of the functional blocks may further be configured as a combination of computing devices, such as a combination of a DSP and a microprocessor, a plurality of microprocessors, one or more microprocessors connected communicatively to the DSP or any other configuration combination.

[0184] As described above, the preferred embodiments of the present invention have been described. However, the present invention is not limited to such embodiments, and any changes to the present invention belong to the technical scope of the present invention as long as the gist of the present invention is not departed from.

[0185] Also, with respect to the above-described embodiments and the like, the following additional remarks are disclosed.

[0186] (Appendix 1) An information processing method applied to a terminal device, the method comprising: the terminal device receiving a second synchronization signal block (SSB) of a second cell transmitted by a network-side device; and the terminal device performing downlink reception on a first cell reference signal or determining a measurement result of the first cell based on the second synchronization signal block, wherein the first synchronization signal block of the first cell and the second synchronization signal block of the second cell have a quasi-collocation (QCL) relationship.

[0187] (Appendix 2) The method according to claim 1, wherein When the terminal device fails to successfully receive the first synchronization signal block transmitted by the network-side device, the terminal device performs downlink reception for the first cell reference signal based on the second synchronization signal block or determines the measurement result of the first cell.

[0188] (Appendix 3) The method according to claim 1 or 2, Within the period of one synchronization signal block, the number of transmissions of the second synchronization signal block is not less than the number of the first synchronization signal blocks to be transmitted.

[0189] (Appendix 4) The method according to any one of claims 1 to 3, The first synchronization signal block and the second synchronization signal block having a quasi-collocation relationship have the same index.

[0190] (Appendix 5) The method according to any one of claims 1 to 4, The method further includes the terminal device receiving first indication information transmitted by the network-side device, wherein the first indication information is also used to instruct the stop of the transmission of the first synchronization signal block to be transmitted.

[0191] (Appendix 6) The method according to claim 5, wherein the first indication information is also used to indicate the index of the first synchronization signal block whose transmission is stopped.

[0192] (Appendix 7) The method according to any one of claims 1 to 6, The method further includes the terminal device receiving second indication information transmitted by the network-side device, The second indication information is also used to indicate the identification information of the second cell, or is used to indicate that the first synchronization signal block and the second synchronization signal block have a quasi-collocation relationship. Accordingly, the terminal device performs downlink reception on the first cell reference signal based on the second synchronization signal block or determines a measurement result of the first cell.

[0193] (Appendix 8) The method according to any one of claims 1 to 7, wherein the first cell is a special cell (SpCell) when the terminal device is in a connected state, or is a cell selected or reselected when the terminal device is in an idle or inactive state.

[0194] (Appendix 9) The method according to any one of claims 1 to 8, wherein the terminal device determines a measurement result of the first cell based on the second synchronization signal block.

[0195] (Appendix 10) The method according to claim 9, wherein the terminal device determines a measurement result of the first cell based on the second synchronization signal block, includes the terminal device using a second measurement result of the second synchronization signal block as a first measurement result of the first synchronization signal block when measuring the first synchronization signal block.

[0196] (Appendix 11) The method according to claim 10, wherein the measurement result includes an L1 measurement result for the first synchronization signal block or an L3 measurement result for the first synchronization signal block.

[0197] (Appendix 12) The method according to claim 9, wherein the terminal device determines a measurement result of the first cell based on the second synchronization signal block, A method, including selecting, by the terminal device, a first synchronization signal block for performing random access in the first cell based on a second measurement result of the second synchronization signal block.

[0198] (Appendix 13) The method according to claim 9, wherein The method further includes selecting, by the terminal device, a second synchronization signal block for performing random access based on a second measurement result of the second synchronization signal block, and determining, as the second synchronization signal block, a synchronization signal block associated with a PRACH resource of the first cell.

[0199] (Appendix 14) The method according to claim 9, wherein the determining, by the terminal device, a measurement result of the first cell based on the second synchronization signal block includes determining, by the terminal device, a synchronization signal block for radio link detection or beam failure detection based on a first synchronization signal block as the second synchronization signal block, and performing radio link failure detection or beam failure detection of the first cell by the terminal device based on a second measurement result of the second synchronization signal block.

[0200] (Appendix 15) The method according to claim 9, wherein the determining, by the terminal device, a measurement result of the first cell based on the second synchronization signal block includes determining, by the terminal device, a synchronization signal block for radio resource management measurement based on a first synchronization signal block as the second synchronization signal block, and performing radio resource management (RRM) measurement of the first cell by the terminal device by measuring the second synchronization signal block based on a set parameter of the second synchronization signal block.

[0201] (Appendix 16) The method according to claim 9, wherein the determining, by the terminal device, a measurement result of the first cell based on the second synchronization signal block includes A method including, when the terminal device measures the first cell, using the measurement result of the second cell as the measurement result of the first cell.

[0202] (Appendix 17) The method according to claim 9, wherein the terminal device determining the measurement result of the first cell based on the second synchronization signal block includes the terminal device measuring the second cell and determining the measurement result of the first cell.

[0203] (Appendix 18) The method according to any one of claims 1 to 8, wherein the terminal device performing downlink reception for the first cell reference signal based on the second synchronization signal block includes the terminal device performing downlink reception for the CSI-RS that has a quasi-collocation relationship with the first synchronization signal block based on the second synchronization signal block.

[0204] (Appendix 19) The method according to claim 18, wherein when the terminal device receives the CSI-RS that has a quasi-collocation relationship with the first synchronization signal block, the terminal device uses the second downlink reception parameter for receiving the second synchronization signal as the first downlink reception parameter for receiving the first synchronization signal, and receives the CSI-RS based on the first downlink reception parameter.

[0205] (Appendix 20) The method according to claim 18, wherein the terminal device determines that the quasi-collocation relationship between the CSI-RS and the synchronization signal block of the first cell is the same as the quasi-collocation relationship between the CSI-RS and the synchronization signal block of the second cell, and receives the CSI-RS based on the second downlink reception parameter for receiving the second synchronization signal.

[0206] (Appendix 21) An information transmission method applicable to a terminal device, the method comprising: when the terminal device starts random access in a first cell, or performs RLM / BFD / RRM measurement based on a first synchronization signal block of the first cell, or performs cell selection or reselection measurement on the first cell, and the terminal device cannot successfully receive or measure the first synchronization signal block, sending a first wake-up signal to a network-side device, the first wake-up signal being used to instruct the network-side device to resume transmission of the first synchronization signal block of the first cell.

[0207] (Appendix 22) The method according to claim 21, wherein: the first cell is a special cell (SpCell) when the terminal device is in a connected state, or is a cell selected or reselected when the terminal device is in an idle or inactive state.

[0208] (Appendix 23) The method according to claim 21 or 22, further comprising: the terminal device receiving first indication information sent by the network-side device, wherein the first indication information is used to instruct the network device to stop transmitting the first synchronization signal block that should be transmitted.

[0209] (Appendix 24) The method according to claim 21 or 22, wherein: ​The method is such that the terminal device has not received the second instruction information for the network-side device transmission, and the terminal device starts random access in the first cell. When performing RLM / BFD / RRM measurement or cell selection or reselection measurement based on the first synchronization signal block of the first cell, the first wake-up signal is transmitted to the network-side device. Among them, the second instruction information is used to indicate the identification information of the second cell, or the second instruction information is used to instruct the terminal device to perform downlink reception for the first cell reference signal or determine the measurement result of the first cell by the second synchronization signal block because the first synchronization signal block has a quasi-collocation relationship with the second synchronization signal block.

[0210] (Appendix 25) The method according to claim 24, wherein The method further comprises When the terminal device fails to successfully receive or measure the second synchronization signal block of the second cell, the terminal device transmits a second wake-up signal to the network-side device, and the second wake-up signal is used to instruct the network-side device to resume the transmission of the second synchronization signal block of the second cell.

[0211] (Appendix 26) The method according to any one of claims 21 to 25, wherein The method further comprises The terminal device receiving the first synchronization signal block transmitted after the transmission recovery of the network-side device, The method further comprising performing at least one of random access, RLM / BFD / RRM measurement, and cell selection or reselection measurement based on the first synchronization signal block.

[0212] (Appendix 27) The method according to any one of claims 21 to 26, wherein A method in which, within the transmission period of one synchronization signal block, the number of transmissions of the second synchronization signal block is not less than the number of transmissions of the first synchronization signal block to be transmitted.

[0213] (Appendix 28) The method according to any one of claims 21 to 27, wherein the first synchronization signal block and the second synchronization signal block having a quasi-collocation relationship have the same index.

[0214] (Appendix 29) An information transmission method applied to a network-side device, the method comprising: the network-side device stopping the transmission of the first synchronization signal block of the first cell to be transmitted to the terminal device; and transmitting the second synchronization signal block of the second cell to be transmitted to the terminal device, or stopping the transmission of the second synchronization signal block of the second cell to be transmitted, wherein the first synchronization signal block of the first cell and the second synchronization signal block of the second cell have a quasi-collocation (QCL) relationship.

[0215] (Appendix 30) The method according to claim 29, wherein within the period of one synchronization signal block, the number of transmissions of the second synchronization signal block is not less than the number of the first synchronization signal blocks to be transmitted.

[0216] (Appendix 31) The method according to claim 29 or 30, wherein the first synchronization signal block and the second synchronization signal block having a quasi-collocation relationship have the same index.

[0217] (Appendix 32) The method according to claims 29 to 30, wherein the method further comprises: the network-side device transmitting first indication information to the terminal device. A method, wherein the first indication information is used to instruct the stop of transmission of the first synchronization signal block to be transmitted.

[0218] (Appendix 33) The method according to claim 32, wherein the first indication information is further used to indicate an index of the first synchronization signal block to be transmitted, the transmission of which is stopped.

[0219] (Appendix 34) The method according to any one of claims 29 to 33, wherein the method further comprises a network-side device transmitting second indication information to the terminal device, wherein the second indication information is used to indicate identification information of the second cell or is used to indicate that the first synchronization signal block has a quasi-collocation relationship with the second synchronization signal block, whereby the terminal device performs downlink reception of the first cell reference signal by the second synchronization signal block or determines a measurement result of the first cell.

[0220] (Appendix 35) The method according to claim 29, wherein the method further comprises the network-side device receiving a first wake-up signal transmitted by the terminal device, the first wake-up signal being used to instruct the resumption of transmission of the first synchronization signal block of the first cell; or the network-side device receiving a second wake-up signal transmitted by the terminal device, the second wake-up signal being used to instruct the resumption of transmission of the second synchronization signal block of the second cell.

[0221] (Appendix 36) The method according to claim 35, wherein the method further comprises A method comprising the network-side device resuming transmission of the first synchronization signal block of the first cell or resuming transmission of the second synchronization signal block of the second cell to the terminal device.

[0222] (Appendix 37) The method according to claim 36, wherein the network-side device resumes transmission of the first synchronization signal block of the first cell before transmitting an RRC reconfiguration message, and the RRC reconfiguration message is an RRC reconfiguration message for re-synchronization of MCG / SCG.

[0223] (Appendix 38) A network device comprising a memory and a processor, wherein the memory stores a computer program, and the processor is configured to execute the computer program to perform the method according to any one of Appendices 29 to 37.

[0224] (Appendix 39) A terminal device comprising a memory and a processor, wherein the memory stores a computer program, and the processor is configured to execute the computer program to perform the method according to any one of Appendices 1 to 28.

[0225] (Appendix 40) A communication system comprising the network device according to Appendix 38 and / or the terminal device according to Appendix 39.

Claims

1. An information processing apparatus, applicable to a terminal device, a first receiving unit that receives a second synchronization signal block (SSB) of a second cell transmitted by a network-side device; and a first processing unit that performs downlink reception on a first cell reference signal based on the second synchronization signal block, or determines a measurement result of the first cell, wherein the first synchronization signal block of the first cell and the second synchronization signal block of the second cell have a quasi-collocation (QCL) relationship, the apparatus.

2. The apparatus according to claim 1, when the first receiving unit cannot successfully receive the first synchronization signal block transmitted by the network-side device, the first processing unit performs downlink reception on the first cell reference signal based on the second synchronization signal block or determines a measurement result of the first cell, the apparatus.

3. The apparatus according to claim 1, within the period of one synchronization signal block, the number of transmissions of the second synchronization signal block is not less than the number of the first synchronization signal blocks to be transmitted, the apparatus.

4. The apparatus according to claim 1, the first synchronization signal block and the second synchronization signal block having a quasi-collocation relationship have the same index, the apparatus.

5. The apparatus according to claim 1, the first receiving unit is further used to receive first indication information transmitted by a network-side device, and the first indication information is used to indicate the stop of the transmission of the first synchronization signal block to be transmitted, the apparatus.

6. The apparatus according to claim 5, the first indication information is further used to indicate the index of the first synchronization signal block whose transmission is stopped, the apparatus.

7. The apparatus according to claim 1, the first receiving unit is further used to receive second indication information transmitted by a network-side device, the second indication information is used to indicate the identification information of the second cell or to indicate that the first synchronization signal block and the second synchronization signal block have a quasi-collocation relationship, whereby the terminal device is caused to perform downlink reception on the first cell reference signal by the second synchronization signal block or to determine a measurement result of the first cell, the apparatus.

8. The apparatus according to claim 1, The first cell is a special cell (SpCell) when the terminal device is in a connected state, or is a cell selected or reselected when the terminal device is in an idle or inactive state, the apparatus.

9. The apparatus according to claim 1, when the first processing unit measures the first synchronization signal block, the second measurement result of the second synchronization signal block is used as the first measurement result of the first synchronization signal block, the apparatus.

10. The apparatus according to claim 9, the measurement result includes an L1 measurement result for the first synchronization signal block or an L3 measurement result for the first synchronization signal block, the apparatus.

11. The apparatus according to claim 1, the first processing unit selects a first synchronization signal block for performing random access in the first cell based on the second measurement result of the second synchronization signal block; or the first processing unit selects a second synchronization signal block for performing random access based on the second measurement result of the second synchronization signal block, and determines the synchronization signal block associated with the PRACH resource of the first cell as the second synchronization signal block, the apparatus.

12. The apparatus according to claim 1, the first processing unit determines the synchronization signal block for radio link detection or beam failure detection based on the first synchronization signal block as the second synchronization signal block, and performs radio link failure detection or beam failure detection of the first cell based on the second measurement result of the second synchronization signal block; and / or the first processing unit determines the synchronization signal block for radio resource management measurement based on the first synchronization signal block as the second synchronization signal block, and the terminal device performs radio resource management (RRM) measurement of the first cell by measuring the second synchronization signal block based on the set parameters of the second synchronization signal block, the apparatus.

13. The apparatus according to claim 1, when the first processing unit measures the first cell, the measurement result of the second cell is used as the measurement result of the first cell, or determines the measurement result of the first cell by measuring the second cell, the apparatus.

14. The apparatus according to claim 1, The apparatus, wherein the first processing unit performs downlink reception on CSI-RS having a quasi-collocation relationship with the first synchronization signal block based on the second synchronization signal block.

15. The apparatus according to claim 14, when the first processing unit receives the CSI-RS having a quasi-collocation relationship with the first synchronization signal block, the second downlink reception parameter for receiving the second synchronization signal block is used as the first downlink reception parameter for receiving the first synchronization signal block, and the CSI-RS is received based on the first downlink reception parameter; or the first processing unit determines that the quasi-collocation relationship between the CSI-RS and the synchronization signal block of the first cell is the same as the quasi-collocation relationship between the CSI-RS and the synchronization signal block of the second cell, and the CSI-RS is received based on the second downlink reception parameter for receiving the second synchronization signal.

16. An information transmission apparatus, applied to a terminal device, including a first transmission unit that transmits a first wake-up signal to a network-side device when the terminal device starts random access in a first cell, or performs RLM / BFD / RRM measurement based on the first synchronization signal block of the first cell, or performs cell selection or reselection measurement on the first cell, and the terminal device fails to successfully receive or measure the first synchronization signal block of the first cell. The first wake-up signal is used to instruct the network-side device to resume transmission of the first synchronization signal block of the first cell.

17. The apparatus according to claim 16, when the terminal device has not received second indication information transmitted by the network-side device, and the terminal device starts random access in the first cell, or performs RLM / BFD / RRM measurement or cell selection or reselection measurement based on the first synchronization signal block of the first cell, the first transmission unit transmits the first wake-up signal to the network-side device. The second indication information is used to indicate the identification information of the second cell, or is used to indicate that the first synchronization signal block has a quasi-collocation relationship with the second synchronization signal block, whereby the terminal device performs downlink reception on the first cell reference signal by the second synchronization signal block or determines the measurement result of the first cell.

18. The apparatus according to claim 16, wherein the first transmission unit transmits a second wake-up signal to a network-side device when the terminal device fails to successfully receive or measure the second synchronization signal block of the second cell, and the second wake-up signal is used to instruct the network-side device to resume transmission of the second synchronization signal block of the second cell.

19. The apparatus according to claim 16, wherein the apparatus further comprises a second reception unit that receives the first synchronization signal block transmitted by the network-side device after resuming transmission of the first synchronization signal block; and a second processing unit that performs at least one of random access, RLM / BFD / RRM measurement, and cell selection or reselection measurement based on the first synchronization signal block.

20. An information transmission apparatus, applied to a network-side device, comprising a second transmission unit, wherein the second transmission unit stops transmitting the first synchronization signal block of the first cell to be transmitted to the terminal device; and transmits the second synchronization signal block of the second cell to be transmitted to the terminal device, or stops transmitting the second synchronization signal block of the second cell to be transmitted; wherein the first synchronization signal block of the first cell and the second synchronization signal block of the second cell have a quasi-collocation (QCL) relationship.

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