Information Processing Method, Information Transmission / Reception Method, and Apparatus

Abstract

Embodiments of the present invention provide an information transmission / reception method, an information processing method, and an apparatus. The information transmission / reception method includes a step in which a first network device transmits third indication information to a second network device, where the third indication information is used to indicate that the first network device stops or resumes transmitting a first synchronization signal block to be transmitted in a first cell, or is used to indicate that the first network device stops or resumes transmitting a physical broadcast channel (PBCH) that carries a master information block (MIB) of the first synchronization signal block to be transmitted.

Description

Technical Field

[0001] Embodiments of the present invention relate to the field of communication technologies.

Background Art

[0002] NR (New Radio) base stations need to operate with a wide bandwidth (e.g., 100 MHz), use a large number of ports (64T / 64R), and a short TTI (Transmission Time Interval) (e.g., 1 ms). Therefore, the energy consumption cost of NR base stations in functions such as baseband processing and digital front-end is much higher than that of LTE (Long Term Evolution) base stations. Also, the operating frequency of NR's FR2 (Frequency Range 2) (above 6 GHz) is high, and the higher the frequency point, the greater the signal path loss. Therefore, the design principle of NR is to transmit signals farther using narrower beams. Thus, the number of antenna units used by NR base stations for analog beamforming increases significantly, and the number of radio frequency units and radio frequency channels for transmitting and receiving signals also increases. Each radio frequency channel is provided with a power amplifier (PA), and the energy consumption of the PA accounts for about 80% of the total energy consumption of the base station. Therefore, as the number of PAs increases, the energy consumption of the base station also increases. Currently, AAUs (Active Antenna Units) in the FR1 (Frequency Range 1) band generally adopt 192 antenna units and support 64 channels, which is much larger than the maximum 8 channels of LTE.

[0003] According to the statistical data of communication operators, the average energy consumption of an NR base station exceeds three times that of an LTE base station, and approximately 50% of the cost for communication operators to deploy a 5G (fifth-generation) network is the cost of electricity bills. More importantly, NR base stations have high energy consumption even during periods without services, and they need to transmit common signals such as SSB (synchronization signal block), SIB1 (first system block), and SI (system information) even during periods without services, resulting in a significant reduction in the energy usage efficiency of NR base stations. Energy conservation of the NR network is an issue that needs to be resolved urgently.

[0004] Note that the above description of the background art is merely for more clearly and completely explaining the configuration of the present invention and is for the purpose of making those skilled in the art understand. These configurations should not be construed as well-known technologies to those skilled in the art just because they are described in the background art part of the present invention.

SUMMARY OF THE INVENTION

PROBLEMS TO BE SOLVED BY THE INVENTION

[0005] In 3GPP (registered trademark) Rel-15 / Rel-16 (Release 15 / Release 16 of the Third Generation Partnership Project), in the same frequency (intra-band) carrier aggregation (CA) scenario, 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 obtains downlink synchronization of the SCell from the SSB transmitted by the special cell (SpCell). At the same site, at least one cell transmits an SSB, and only the cell transmitting the SSB can be the SpCell of the terminal device.

[0006] According to the discovery of the inventor of the present invention, in the prior art, in cells of the same site, at least one cell must transmit an SSB, and also, the serving cell (at least the SpCell) of the terminal device must transmit an SSB. Even when there is no service at the site, the energy overhead becomes large, which is disadvantageous for the energy saving of the network.

[0007] Also, for network energy saving, if all serving cells of the terminal device stop transmitting SSBs or extend the SSB transmission period, the terminal device will lose the downlink synchronization and downlink channel estimation signals of the serving cell, that is, since the terminal device cannot perform measurements based on the SSB of the serving cell, it means that the serving cell of the terminal device cannot provide services to the terminal device. The terminal device connected to the serving cell has to hand over to an adjacent cell, and the terminal device camping on the serving cell has to perform cell re-selection to camp on an adjacent cell. FIG. 1 is a schematic diagram of a network energy saving scheme. As shown in FIG. 1, for the SpCell of the terminal device for network energy saving, the network device can dynamically activate and deactivate it based on information such as the traffic and measurement reports of the NR cell and its adjacent cells. When the cell is deactivated, 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. In this way, when the traffic is low, the energy consumption of the SpCell can be saved.

[0008] In this way, when the cell enters the energy-saving state, the terminal device hands over to an adjacent cell and notifies the adjacent NR network device or LTE network device that the NR cell has entered the energy-saving state. The adjacent NR / LTE network device accepts the coverage area and traffic of the NR cell. Then, based on information such as its own traffic and measurement reports, the adjacent NR / LTE network device determines whether to request the NR cell that has entered the energy-saving state to return to normal operation. For example, when its own traffic reaches a certain threshold, it triggers a request for the NR cell that has entered the energy-saving state to return to normal operation. When the NR cell returns to normal operation, some terminal devices that previously handed over to an adjacent NR / LTE cell can hand over to the NR cell again.

[0009] According to the discovery of the inventor of the present invention, in the above scheme, when the NR cell dynamically enters the energy-saving state multiple times, the terminal device performs frequent handovers from the NR cell or frequent cell reselections, which will affect the user experience. In addition, when the terminal device of the energy-saving state cell migrates to an adjacent cell, the load level of the adjacent cell increases, which affects the service quality of the terminal device of 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 and reception method, and an apparatus.

Means for Solving the Problems

[0011] In one aspect of an embodiment of the present invention, there is provided an information transmission / reception device applied to a first network device to which a first cell belongs, the device including a first transmission unit configured to transmit third instruction information to a second network device, where the third instruction information is used to indicate that the first network device stops or resumes transmission of a first synchronization signal block to be transmitted by the first cell, or is used to indicate that the first network device stops or resumes transmission of a physical broadcast channel (PBCH) that carries a master information block (MIB) of the first synchronization signal block to be transmitted.

[0012] In another aspect of an embodiment of the present invention, there is provided an information transmission / reception device applied to a second network device, the device including a first reception unit configured to receive third instruction information transmitted by a first network device, where the third instruction information is used to indicate that the first network device stops or resumes transmission of a first synchronization signal block to be transmitted by the first cell, or is used to indicate that the first network device stops or resumes transmission of a physical broadcast channel (PBCH) that carries a master information block (MIB) of the first synchronization signal block to be transmitted.

[0013] In another aspect of an embodiment of the present invention, there is provided an information processing device applied to a terminal device, the device including a second reception unit configured to receive a discovery reference signal transmitted by a network-side device, and a first processing unit configured to perform downlink reception for a first cell reference signal based on the discovery reference signal or determine a measurement result of the first cell, where the discovery reference signal is a synchronization reference signal (SS) included in a first synchronization signal block of the first cell.

[0014] One of the advantageous effects of the embodiments of the present invention is as follows. The terminal device performs downlink reception for the reference signal of the energy-saving cell based on the discovery reference signal, or determines the measurement result of the energy-saving cell. Also, the terminal device can randomly access, perform RLM / BFD / RRM measurement, cell selection or reselection measurement in the energy-saving cell. As a result, the terminal device does not need to hand over to other cells, and the terminal device that was originally camped on the energy-saving cell also does not need to perform cell reselection. Therefore, it is possible to avoid transferring the terminal device in the energy-saving state cell to an adjacent cell to generate a service interruption and increasing the load level of the adjacent cell, and it is possible to ensure that the user experience does not deteriorate when the cell enters the energy-saving state.

[0015] One of the advantageous effects of the embodiments of the present invention is as follows. Between network devices, it is possible to exchange instruction information on whether to stop transmitting the SSB. The adjacent base station of the energy-saving cell broadcasts the exchange information to the terminal device via system information, so that the terminal device can detect the energy-saving cell and perform RRM measurement on the energy-saving cell using the discovery reference signal or the reference signal of the second cell.

[0016] As shown in the following description and drawings, specific embodiments of the present invention are disclosed in detail, and the ways in which the principles of the present invention can be adopted are shown. It should be noted that the scope of the embodiments of the present invention is not limited thereto. The embodiments of the present invention include those that are changed, modified, and equivalent within the gist and scope of the appended claims.

[0017] The features described and / or shown in one embodiment may be used in one or more other embodiments in the same or similar manner, may be combined with the features in other embodiments, or may replace the features in other embodiments.

[0018] In the present specification, the term "comprising / including" means the presence of a feature, member, step, or component, and does not exclude the presence or addition of one or more other features, members, steps, or components.

Brief Description of the Drawings

[0019] The elements and features described in one drawing and one embodiment of the present invention may be combined with the elements and features shown in one or more other drawings or embodiments. Further, in the drawings, like reference numerals indicate corresponding elements in a plurality of drawings, and may indicate corresponding elements used in one or more embodiments.

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Best Mode for Carrying Out the Invention

[0020] The above and other features of the present invention will become apparent from the following description. In the specification and drawings, specific embodiments of the present invention are disclosed in detail, and some embodiments in which the principles of the present invention can be adopted are shown. Note that the present invention is not limited to the embodiments described. The present invention includes all modified, deformed, and equivalent ones within the scope of the appended claims. The following describes each embodiment of the present invention with reference to the drawings. These embodiments are merely exemplary and do not limit the present invention.

[0021] In the embodiments of the present invention, terms such as "first" and "second" are used to distinguish different elements in the title, but do not represent the spatial arrangement or temporal order of these elements, and these elements are not limited by these terms. The term "and / or" includes any one and all combinations of one or more of the terms listed in the related list. Terms such as "include", "comprise", "have", etc. mean the presence of the recited features, elements, elements, or components, but do not exclude the presence or addition of one or more other features, elements, elements, or components.

[0022] In the embodiments of the present invention, singular forms such as "one" and "the" include the plural form and should be understood broadly as "one kind" or "one category", and are not limited to "one". Also, the term "the foregoing" should be understood to include both the singular and plural forms unless the context clearly indicates otherwise. Also, unless the context clearly indicates otherwise, the term "described in" should be understood as "described in at least part", and the term "based on" should be understood as "based on at least part".

[0023] In an embodiment of the present invention, the term "communication network" or "wireless communication network" may mean a network that conforms to any communication standard such as Long Term Evolution (LTE), Long Term Evolution-Advanced (LTE-A), Wideband Code Division Multiple Access (WCDMA), High-Speed Packet Access (HSPA), etc.

[0024] Also, communication between devices in a communication system may be performed according to a communication protocol at any stage. The communication protocol may include, for example, 1G (generation), 2G, 2.5G, 2.75G, 3G, 4G, 4.5G, and 5G, New Radio (NR), etc., and / or other currently known or future-developed communication protocols, but is not limited thereto.

[0025] In an embodiment of the present invention, the term "network device" means a device in a communication system that allows a terminal device to access the communication system and provides services to the terminal device. The network device may include, but is not limited to, a Base Station (BS), an Access Point (AP), a Transmission Reception Point (TRP), a broadcast transmitter, a Mobile Management Entity (MME), a gateway, a server, a Radio Network Controller (RNC), a Base Station Controller (BSC), etc.

[0026] The base station may include, but is not limited to, a Node B (NodeB or NB), an evolved Node B (eNodeB or eNB), and a 5G base station (gNB), as well as a Remote Radio Head (RRH), a Remote Radio Unit (RRU), a relay device, or a low-power node (such as femto, pico, etc.), an IAB (Integrated access and backhaul) node, an IAB-DU, or an IAB-donor. Also, the term "base station" may include some or all of their functions, and each base station may provide communication coverage for a specific geographical area. The term "cell" may mean a base station and / or its coverage area depending on the context in which the term is used. The terms "cell" and "base station" may be used interchangeably as long as there is no confusion.

[0027] In an embodiment of the present invention, the term "user equipment" (UE) or the term "terminal equipment" (TE) means a device that accesses a communication network via, for example, a network device and receives network services. The terminal equipment may be fixed or mobile, and may be referred to as a mobile station (MS), a terminal, a subscriber station (SS), an access terminal (AT), an IAB-MT, a station, etc.

[0028] The terminal equipment may include, but is not limited to, a cellular phone, a personal digital assistant (PDA), a radio transceiver, a wireless communication device, a handheld device, a machine-type communication device, a laptop computer, a cordless phone, a smartphone, a smartwatch, a digital camera, etc.

[0029] Also, for example, in a scenario such as the Internet of Things (IoT), the user device may be a device or apparatus that performs monitoring or measurement, and may include, for example, a Machine Type Communication (MTC) terminal, a vehicle-mounted communication terminal, a Device to Device (D2D) terminal, a Machine to Machine (M2M) terminal, etc., but is not limited thereto.

[0030] Furthermore, the term "network side" or "network device side" means the side of the network, which may be a base station or may include one or more of the above network devices. The term "user side" or "terminal side" or "terminal device side" means the side of the user or terminal, which may be a UE or may include one or more of the above terminal devices. In this specification, unless otherwise specified, the "device" may mean a network device or a terminal device.

[0031] In the following description, unless confusion occurs, the term "uplink control signal" and "uplink control information (UCI)" or "physical uplink control channel (PUCCH)" may be replaced with each other, and the term "uplink data signal" and "uplink data information" or "physical uplink shared channel (PUSCH)" may be replaced with each other.

[0032] The terms "downlink control signal" and "downlink control information (DCI)" or "physical downlink control channel (PDCCH)" may be replaced with each other, and the terms "downlink data signal" and "downlink data information" or "physical downlink shared channel (PDSCH)" may be replaced with each other.

[0033] 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, and 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 also be referred to as an uplink transmission or uplink information or uplink channel. Transmitting an uplink transmission on an uplink resource may be understood as transmitting an uplink transmission using the uplink resource. The downlink data / signal / channel / information may be understood in the same way.

[0034] In an embodiment of the present invention, the upper layer signaling may be, for example, radio resource control (RRC) signaling. The RRC signaling is, for example, referred to as an RRC message and includes, for example, a master information block (MIB), system information, a dedicated RRC message, or is referred to as an RRC information element (RRC IE). Further, the upper layer signaling may be, for example, MAC (Medium Access Control) layer signaling, or may be referred to as a MAC control element (MAC CE). Note that the present invention is not limited thereto.

[0035] The following describes a scenario of an embodiment of the present invention with reference to an example, but the present invention is not limited thereto.

[0036] FIG. 2 is a schematic diagram of a communication system according to an embodiment of the present invention. As shown in FIG. 2, the communication system 200 may include a network device 201 and terminal devices 202 and 203. For convenience of explanation, FIG. 2 describes an example of two terminal devices and one network device, but the embodiments of the present invention are not limited thereto.

[0037] In an embodiment of the present invention, existing services or services that can be implemented in the future can be provided between the network device 201 and the terminal devices 202 and 203. For example, these services include, but are not limited to, enhanced mobile broadband (eMBB), massive machine type communication (mMTC), ultra-reliable and low-latency communication (URLLC), and related communications of terminal devices with reduced capabilities.

[0038] Here, the terminal device 202 may transmit data to the network device 201 using, for example, a grant or grant-free transmission method. The network device 201 receives the data transmitted by one or more terminal devices 202 and may feedback information such as an acknowledgment ACK / non-acknowledgment NACK to the terminal device 202. Based on the feedback information, the terminal device 202 may confirm the end of the transmission procedure, or perform new data transmission, or retransmit the data.

[0039] Note that although FIG. 2 shows that both of the two terminal devices 202 and 203 are located within the coverage area of the network device 201, the present invention is not limited thereto. Neither of the two terminal devices 202 and 203 may be located within the coverage area of the network device 201, or one terminal device 202 may be located within the coverage area of the network device 201 and the other terminal device 203 may be located outside the coverage area of the network device 201.

[0040] The following describes embodiments of the present invention with reference to the drawings and specific embodiments.

[0041] <Example 1> An embodiment of the present invention provides an information processing method, which will be described from the perspective of the terminal device.

[0042] FIG. 3 is a schematic diagram of an example of an information processing method according to an embodiment of the present invention, and the method is applied to a terminal device. As shown in FIG. 3, the method includes the following steps.

[0043] Step 301: The terminal device receives a discovery reference signal transmitted by a network-side device.

[0044] Step 302: The terminal device performs downlink reception for a first cell reference signal based on the discovery reference signal, or determines a measurement result of the first cell.

[0045] Here, the discovery reference signal is a synchronization reference signal (SS) included in the first synchronization signal block of the first cell.

[0046] It should be noted that FIG. 3 above only schematically shows an embodiment of the present invention, but the present invention is not limited thereto. For example, the execution order between various steps may be appropriately adjusted, several other steps may be added, or several steps may be reduced. Those skilled in the art can make appropriate modifications based on the above content and are not limited to the description of FIG. 3 above.

[0047] In some embodiments, when there is no service, the network side may stop transmitting the Physical Broadcast Channel (PBCH) that carries the synchronization signal block or the Master Information Block (MIB) of one or more serving cells of the terminal device, or extend the transmission period of the synchronization signal block (for example, extend from 20 ms to 320 ms), or extend the transmission period of the PBCH of the synchronization signal block. Hereinafter, stopping the transmission of the synchronization block may mean extending the period of the synchronization signal block, and stopping the transmission of the PBCH may mean extending the period of the PBCH. Hereinafter, the synchronization signal block of the first cell (also referred to as the first carrier) is referred to as the first synchronization signal block, and the first cell is a serving cell that stops transmitting the Physical Broadcast Channel (PBCH) that carries the synchronization signal block or the Master Information Block (MIB) of the synchronization signal block. The first cell may be a special cell (for example, a Primary Cell (PCell) or a Primary Secondary Cell (PSCell)) or a non-special cell (for example, a Secondary Cell (SCell)) of the terminal device. 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 state or a non-active state. Embodiments of the present invention are not limited thereto. Thereby, the energy consumption on the network side can be saved, so the first cell is also referred to as an energy-saving cell (or an SSB-less cell). The synchronization signal block (Synchronization Signal and PBCH block, abbreviated as SSB) may include a Primary Synchronization Signal (PSS), a Secondary Synchronization Signal (SSS), and / or a Physical Broadcast Channel (PBCH).

[0048] In some embodiments, the synchronization signal block of the second cell (also referred to as the second carrier) 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 be referred to as a reference cell or an anchor cell. Embodiments of the present invention are not limited thereto. In embodiments of the present invention, since the second SSB of the second cell with the same index as the first SSB of the first cell has no QCL relationship and the transmission of the first SSB is stopped, the terminal device cannot perform downlink reception for the first cell reference signal based on the first SSB or the second SSB, or determine the measurement result of the first cell.

[0049] In some embodiments, in order to perform downlink reception for the first cell reference signal or determine the measurement result of the first cell, the network side device may transmit a discovery reference signal, and the discovery reference signal is a synchronization reference signal (SS) included in the first SSB of the first cell, and the synchronization reference signal (SS) includes a PSS and / or an SSS. For example, the network side device may stop transmitting the first SSB, but may transmit the discovery reference signal alone, or the network side device may stop transmitting the physical broadcast channel (PBCH) carrying the master information block (MIB) of the first SSB, but may continue to transmit the synchronization reference signal in the first SSB.

[0050] In some embodiments, the first synchronization signal block of the first cell and the discovery reference signal have a quasi-collocation (QCL) relationship, and the types of the QCL relationship include QCL type C and QCL type D. The first synchronization signal block and the discovery reference signal having a quasi-collocation relationship have the same index. In other words, the discovery reference signal with the same index as the first SSB has a quasi-collocation relationship, and the quasi-collocation relationship is indicated by the second indication information, and the indication method will be described later.

[0051] In some embodiments, if the terminal device fails to receive the first synchronization signal block of the first cell transmitted by the network-side device (the transmission of the first SSB of the first cell is stopped), or fails to receive the PBCH of the first synchronization signal block, the discovery reference signal may provide downlink channel estimation information for the first cell. In other words, the terminal device may perform downlink reception for the first cell reference signal based on the discovery reference signal, or determine the measurement result of the first cell. Further, the terminal device may perform random access, RLM / BFD / RRM based on CSI-RS or SSB, cell selection or reselection measurement in the first cell. Thereby, the terminal device does not need to hand over to other cells, and the terminal device camping on the first cell does not need to perform cell reselection either. Therefore, it is possible to avoid migrating the terminal device in the energy-saving state cell to an adjacent cell to generate service interruption and increasing the load level of the adjacent cell, and ensure that the user experience does not degrade when the cell enters the energy-saving state.

[0052] In some embodiments, the network-side device may indicate to stop the transmission of the first SSB that the network-side device should transmit for the first cell, or indicate to stop the transmission of the PBCH that carries the MIB of the first SSB that the network-side device should transmit, by transmitting the first indication information. If the first indication information is not transmitted, it indicates that the SSB that should actually be transmitted has been normally transmitted. The first indication information may be represented by 1 bit or multiple bits, and further indicates the index of the first synchronization signal to be transmitted or the index of the first synchronization signal block of the PBCH that carries the MIB to be transmitted. The network device of the first cell may transmit the first indication information before stopping the transmission of the first SSB and system information, or before stopping the transmission of the physical broadcast channel (PBCH) that carries the master information block (MIB) of the first synchronization signal block and system information. The first indication information may be carried by system information or a dedicated RRC message.

[0053] For example, the first indication information may be an information element newly added to the system information or a dedicated RRC message. If the newly added information element is not included in the system information or the dedicated RRC signaling, it indicates that the SSB to be transmitted by the first cell has been successfully transmitted. If the newly added information element is included in the system information or the dedicated RRC signaling, it indicates that the transmission of the first SSB to be transmitted by the first cell or the PBCH carrying the MIB of the first SSB has been stopped. The value of this information element is used to indicate the index of the first SSB whose transmission has been stopped. For example, this information element may be represented by a bitmap, and each bit of the bitmap corresponds to the index of an SSB. When the value of a bit is 1, it indicates that the SSB with that index has been successfully transmitted. When the value of a bit is 0, it indicates that the SSB with that index has stopped transmitting, and vice versa. This information element may also represent the index value (SSB index) of the SSB whose transmission has been stopped as an N-bit value, and the embodiments of the present invention are not limited thereto.

[0054] In some embodiments, the network-side device may indicate, by transmitting second indication information, that the terminal device can perform downlink reception for the first cell reference signal based on the discovery reference signal 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 based on the discovery reference signal or determine the measurement result of the first cell. When the terminal device has not received the second indication information, it indicates that the terminal device cannot perform downlink reception for the first cell reference signal based on the discovery reference signal or determine the measurement result of the first cell. When the terminal device needs 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 to resume the transmission of the first SSB. Embodiments related to the wake-up signal are described in Embodiment 2.

[0055] Alternatively, in some embodiments, the second indication information is used to indicate that the first synchronization signal block and the discovery reference signal are in a quasi-collocation relationship so that the terminal device performs downlink reception for the first cell reference signal based on the discovery reference signal, or determines the measurement result of the first cell.

[0056] In some embodiments, the network device of the first cell may transmit the second indication information before stopping the transmission of the first SSB, or before stopping the transmission of the PBCH and system information carrying the MIB of the first SSB. The second indication information may be carried by the system information or a dedicated RRC message.

[0057] For example, the second indication information may be an information element newly added to the system information or the dedicated RRC message. If 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 for the first cell reference signal based on the discovery reference signal or determine the measurement result of the first cell. If the information element is included in the system information or the dedicated RRC signaling, it indicates that the terminal device can perform downlink reception for the first cell reference signal based on the discovery reference signal or determine the measurement result of the first cell.

[0058] For example, the newly added information element may be a quasi-collocation identification information element, and the collocation identification information element includes the identification information of the discovery reference signal, indicating that the first synchronization signal block of the first cell and the discovery reference signal are in a quasi-collocation relationship. If the information element is included in the system information or the dedicated RRC signaling, it indicates that the terminal device can perform downlink reception for the first cell reference signal based on the discovery reference signal or determine the measurement result of the first cell.

[0059] In some embodiments, the second indication information further includes the configuration information of the discovery reference signal, and the configuration information of the discovery reference signal includes at least one of the center frequency point of the discovery reference signal, the subcarrier spacing, the transmission period, or the index of the reference signal transmitted within the transmission period. In other words, before transmitting the discovery reference signal, the network device may further transmit the configuration information of the discovery reference signal, and the terminal device receives the discovery reference signal on the corresponding resource based on the configuration information.

[0060] For example, this newly added information element may be a quasi-collocation identification information element, and the collocation identification information element includes the configuration information of the discovery reference signal, indicating that the first synchronization signal block of the first cell and the discovery reference signal are in 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 based on the discovery reference signal or determine the measurement result of the first cell.

[0061] Preferably, when the configuration information of the discovery reference signal indicated by the second indication information is broadcast via the system information of the second cell or the adjacent cell of the first cell, the configuration information of the discovery reference signal may further include the synchronization timing offset between the first cell and the second cell, or the synchronization timing offset between the first cell and the adjacent cell, in half-frame units.

[0062] It should be noted that the network device on the network side that transmits / halts the transmission of the PBCH carrying the first SSB or MIB of the first cell and the network device on the network side that transmits the discovery reference signal may be the same or different network devices. The network device on the network side that transmits the above first indication information and second indication information and receives the wake-up signal and the network device on the network side that transmits the above discovery reference signal may be the same or different network devices.

[0063] In addition, the network-side device that transmits the discovery reference signal may exchange the first indication information and / or the second indication information with an adjacent network device. The adjacent network device may transmit the first indication information and / or the second indication information to the terminal device in an adjacent cell or the terminal device that receives the discovery reference signal via system information or a dedicated RRC message. The embodiments of the present invention are not limited thereto, and will be specifically described in the embodiments.

[0064] In some embodiments, as described above, when the terminal device receives the second indication information, it performs downlink reception for the first cell reference signal based on the discovery reference signal, or determines the measurement result of the first cell, and based on the measurement result, performs random access in the first cell, and may perform RLM / BFD / RRM measurements, cell selection and / or reselection measurements, etc. In other words, when the terminal device needs to perform random access in the first cell and perform RLM / BFD / RRM measurements, cell selection and / or reselection measurements, it may perform downlink reception for the first cell reference signal based on the discovery reference signal, or determine the measurement result of the first cell.

[0065] In some embodiments, in step 302, the terminal device may determine the measurement result of the first cell based on the discovery reference signal. The measurement result includes one of received power (RSRP), received quality (RSRQ), and signal-to-interference ratio (SINR). Here, the terminal device performs random access, radio link monitoring (RLM) based on SSB, beam failure detection (BFD) based on SSB, radio resource management (RRM) measurements based on SSB, cell selection and / or reselection measurements in the first cell based on the measurement result of the discovery reference signal.

[0066] In some embodiments, in step 302, the terminal device may perform downlink reception for the first cell reference signal based on the discovery reference signal. The first cell reference signal includes CSI-RS, and the CSI-RS and the first SSB are in a QCL relationship. That is, the terminal device performs downlink reception for the CSI-RS that is in a quasi-collocation relationship with the first synchronization signal block based on the discovery reference signal, and performs RLM / BFD / RRM measurement or non-competition-based random access based on the received CSI-RS.

[0067] Here, when the terminal device receives the CSI-RS that is in a quasi-collocation relationship with the first synchronization signal block, it sets the downlink reception parameters for receiving the discovery reference signal as the downlink reception parameters for receiving the CSI-RS that is in a quasi-collocation relationship with the first synchronization signal block. Here, the downlink reception parameters include Doppler offset, Doppler spread, average delay, delay spread, and spatial reception parameters.

[0068] On the other hand, 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 discovery reference signal, and receives the CSI-RS based on the downlink reception parameters for receiving the discovery reference signal. Here, the fact that the quasi-collocation relationships are the same means that the CSI-RS and the first SSB are in a quasi-collocation relationship, the discovery reference signal and the first SSB are in a quasi-collocation relationship, and the CSI-RS and the discovery reference signal are in a quasi-collocation relationship.

[0069] Thereby, the terminal device can perform RLM / BFD / RRM measurement or non-competitive random access based on the CSI-RS.

[0070] According to this embodiment, the terminal device performs downlink reception for the reference signal of the power-saving cell based on the discovery reference signal, or determines the measurement result of the power-saving cell. Also, the terminal device can randomly access, perform RLM / BFD / RRM measurement, cell selection or reselection measurement in the power-saving cell. As a result, the terminal device does not need to hand over to other cells, and the terminal device that was originally camping on the power-saving cell also does not need to perform cell reselection. Therefore, it is possible to avoid migrating the terminal device in the power-saving state cell to an adjacent cell to generate service interruption and increasing the load level of the adjacent cell, and to ensure that the user experience does not degrade when the cell enters the power-saving state.

[0071] <Example 2> Embodiments of the present invention provide an information transmission method, which will be described from the perspective of the terminal device. Here, the description of the same content as in Embodiment 1 will be omitted.

[0072] FIG. 4 is a schematic diagram of another example of the information transmission method according to an embodiment of the present invention. As shown in FIG. 4, the method includes the following steps.

[0073] Step 401: 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. When the terminal device cannot receive or measure the first synchronization signal block, the terminal device sends a first wake-up signal to the network-side device, and the first wake-up signal indicates that the network-side device resumes the transmission of the first synchronization signal block of the first cell, or resumes the transmission of the PBCH that carries the MIB of the first synchronization signal block.

[0074] In some embodiments, in step 401, when the terminal device has not received the second instruction information sent by the network-side device, 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 to the first cell, the network-side device sends a first wake-up signal. For example, it is carried by a specified PRACH opportunity or a random access preamble. The embodiment of the second instruction information may refer to Embodiment 1, and the description is omitted here.

[0075] In other words, the fact that the terminal device has not received the second instruction information indicates that the terminal device cannot perform downlink reception on the first cell reference signal based on the discovery reference signal, 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 to the first cell, it is necessary to send a first wake-up signal so that the first cell resumes the transmission of the SSB, or resumes the transmission of the PBCH carrying the MIB of the first synchronization signal block.

[0076] In some embodiments, the method may further include a step in which when the terminal device cannot 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. 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, or resume the transmission of the PBCH carrying the MIB of the second synchronization signal block.

[0077] Here, the first synchronization signal block of the first cell and the second synchronization signal block of the second cell are in a quasi-collocation (QCL) relationship.

[0078] In some embodiments, the embodiments of the first cell, the second cell, the first SSB, and the second SSB may refer to Embodiment 1, and the description thereof is omitted herein.

[0079] In some embodiments, the method may further include a step in which the terminal device receives first indication information. The embodiment of the first indication information may refer to Embodiment 1, and the description thereof is omitted herein.

[0080] It should be noted that the transmission destinations of the first wake-up signal and the second wake-up signal, and the execution entities that transmit the first indication information and the second indication information may be the same as or different from the network device that stops transmitting the first SSB and the network device that transmits the second SSB, and may be the same as or different from the network device that transmits the discovery reference signal.

[0081] In some embodiments, the method may further include the following steps.

[0082] Step 402: The terminal device receives a Physical Broadcast Channel (PBCH) that carries a first Synchronization Signal Block (SSB) whose transmission has been resumed by a network-side device, or a Master Information Block (MIB) of the first SSB whose transmission has been resumed.

[0083] Step 403: Perform random access based on the first SSB, or perform RLM / BFD / RRM measurement based on the first SSB of the first cell, or perform cell selection or reselection to the first cell.

[0084] For the embodiments of Steps 402 to 403, reference may be made to the prior art, and the description thereof is omitted herein.

[0085] Also, when the second cell does not transmit a PBCH that carries a second SSB or an MIB either, the terminal device may receive a PBCH that carries a second SSB whose transmission has been resumed by a network-side device or an MIB of the second SSB.

[0086] According to this embodiment, the terminal device may send a Wake-Up signal so that an energy-saving cell that has stopped transmitting the SSB resumes transmitting the SSB, or resumes transmitting the PBCH that carries the MIB of the first SSB, and performs random access, RLM / BFD / RRM measurement, cell selection or reselection, etc. in the energy-saving cell based on the SSB whose transmission has resumed. As a result, the terminal device does not need to hand over to another cell, and the terminal device that was originally camping on the energy-saving cell also does not need to perform cell reselection. Therefore, it is possible to avoid migrating the terminal device in the energy-saving state cell to an adjacent cell to cause service interruption and increasing the load level of the adjacent cell.

[0087] <Example 3> Embodiments of the present invention provide an information transmission method. The method is a process of a network-side device corresponding to the methods of Embodiment 1 and Embodiment 2. Here, the description of the same content as in Embodiment 1 and Embodiment 2 is omitted.

[0088] FIG. 5 is a schematic diagram of an information transmission method according to an embodiment of the present invention. The method is applied to a first network device to which a first cell belongs. As shown in FIG. 5, the method includes the following steps.

[0089] Step 501: The first network device stops transmitting the physical broadcast channel (PBCH) that carries the master information block (MIB) of the first synchronization signal block to be transmitted by the first cell to the terminal device, or stops transmitting the first synchronization signal block to be transmitted by the first cell to the terminal device, and the first network device transmits a discovery reference signal to the terminal device.

[0090] Here, the discovery reference signal is a synchronization reference signal (SS) included in the first synchronization signal block of the first cell.

[0091] In some embodiments, the embodiments of the discovery reference signal, the first cell, the second cell, the first SSB, and the second SSB may refer to Embodiment 1, and the description is omitted here.

[0092] In some embodiments, the method may further include a step in which a first network device transmits first instruction information to a terminal device. For embodiments of the first instruction information, reference may be made to Embodiment 1, and the description thereof is omitted here.

[0093] In some embodiments, a first network device transmits second instruction information to a terminal device. For embodiments of the second instruction information, reference may be made to Embodiment 1, and the description thereof is omitted here.

[0094] In some embodiments, when the second instruction information is not transmitted, that is, when the terminal device cannot perform downlink reception on the first cell reference signal based on the discovery reference signal or determine the measurement result of the first cell, the method may further include the following steps.

[0095] Step 502: The first network device receives a first wake-up signal transmitted by the terminal device. For the first wake-up signal, reference may be made to Embodiment 2, and the description thereof is omitted here.

[0096] In some embodiments, the method may further include the following steps.

[0097] Step 503: The first network device resumes transmitting the PBCH that carries the MIB of the first synchronization signal block or the first SSB of the first cell to the terminal device.

[0098] 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. This RRC reconfiguration message is an RRC reconfiguration message for primary cell (MCG) or secondary cell (SCG) resynchronization. The contention-free random access indicated by the RRC reconfiguration message for MCG / SCG resynchronization is initiated by the network-side device. Since the contention-free random access for MCG / SCG resynchronization is only based on SSB and not on CSI-RS, the network device needs to resume the transmission of the first SSB before transmitting the RRC reconfiguration message so that the terminal device can complete the contention-free random access indicated by the RRC reconfiguration message for MCG / SCG resynchronization based on the first SSB whose transmission has been resumed.

[0099] When the second cell is also controlled by the first network device, the first network device may further stop transmitting the physical broadcast channel (PBCH) carrying the master information block (MIB) of the second synchronization signal block of the second cell to the terminal device, or stop transmitting the second synchronization signal block of the second cell to the terminal device, and may resume transmitting to the terminal device the PBCH carrying the MIB of the second synchronization signal block or the second SSB of the second cell after receiving the second wake-up signal. The description thereof is omitted here.

[0100] Each of the above embodiments merely exemplarily illustrates an example of the present invention, and the present invention is not limited thereto, and appropriate modifications may be made based on each of the above embodiments. For example, each of the above embodiments may be used alone, or one or more of the above embodiments may be used in combination.

[0101] As described above, when there is no QCL relationship between the first SSB of the first cell and the reference signals of the second cell (including the second SSB and CSI-RS), the network device may transmit the discovery reference signal to the terminal device, and the terminal device of the first cell may perform downlink reception for the first cell reference signal based on the discovery reference signal, or may also determine the measurement result of the first cell. When there is a QCL relationship between the first SSB of the first cell and the reference signals of the second cell (including the second SSB and CSI-RS), the terminal device of the first cell may perform downlink reception for the first cell reference signal based on the reference signals of the second cell, or may also determine the measurement result of the first cell.

[0102] Between network devices, it is possible to exchange instruction information on whether to stop transmitting the SSB. By the neighboring base station of the power-saving cell broadcasting the exchanged information to the terminal device via the system information, the terminal device can detect the power-saving cell and perform RRM measurements on the power-saving cell using the discovery reference signal or the reference signals of the second cell.

[0103] In the above embodiments, the exchange and operations of information (via the air interface) between the terminal device and the network device have been described. The following will describe the exchange and operations of information (via the Xn interface) between network devices with reference to Embodiment 4 and Embodiment 5.

[0104] <Embodiment 4> Embodiments of the present invention provide an information transmission and reception method, which will be described from the perspective of the first network device to which the first cell belongs.

[0105] FIG. 6 is a schematic diagram of another example of the information transmission and reception method according to an embodiment of the present invention. As shown in FIG. 6, the method includes the following steps.

[0106] Step 601: The first network device sends third indication information to the second network device, and the third indication information is used to indicate that the first network device stops or resumes transmitting the first synchronization signal block to be transmitted in the first cell, or is used to indicate that the first network device stops or resumes transmitting a physical broadcast channel (PBCH) (hereinafter abbreviated as the PBCH of the first SSB) that carries a master information block (MIB) of the first synchronization signal block to be transmitted.

[0107] In some embodiments, the first network device may, according to the third indication information, notify the second network device whether the controlled cell stops transmitting the first SSB or the PBCH of the first SSB, or resumes transmitting the first SSB or the PBCH of the first SSB, or changes from stopping transmission to resuming transmission of the first SSB or the PBCH of the first SSB, or changes from transmitting to stopping transmission of the first SSB or the PBCH of the first SSB.

[0108] In some embodiments, the third indication information may be implicitly indicated by reusing information elements within an existing serving cell information field (Serving Cell Information NR). For example, an existing information element (ssb-PositionsInBurst) for indicating the position of the actually transmitted SSB may be reused for implicit indication. In the bitmap included in this information element, each bit corresponds to one SSB (SSB index). If the bit value of a certain bit is 0, it indicates that the transmission of the SSB or the PBCH of the SSB corresponding to that bit is stopped. When the first cell stops transmitting all SSBs or all PBCHs of the SSBs, the bitmap is all 0s. If the bit value of a certain bit is 1, it indicates the normal transmission of the SSB or the PBCH of the SSB corresponding to that bit. When the first cell normally transmits all SSBs or all PBCHs of the SSBs, the bitmap is all 1s.

[0109] In some embodiments, the third indication information may be explicitly indicated by a newly added information element in the serving cell information field. For example, in this newly added information element, the number of bits of the newly added information element may be the same as the number of bits of the information element (ssb-PositionsInBurst), and each bit in the bitmap included in the newly added information element corresponds to one SSB (SSB index). When the bit value of a certain bit is 0, it indicates that the transmission of the PBCH of the SSB or SSB that should originally be transmitted corresponding to this bit is stopped. When the transmission of all SSBs or all SSBs' PBCHs that the first cell should actually transmit is stopped, this bitmap is all zeros. When the bit value of a certain bit is 1, it indicates that the transmission of the SSB or SSB's PBCH corresponding to this bit is normal. When the transmission of all SSBs or all SSBs' PBCHs of the first cell is normal, this bitmap is all ones. Preferably, the bits of this newly added information element are only valid when the corresponding bits of the information element (ssb-PositionsInBurst) are 1 (1 indicates that it should actually be transmitted). In other words, if the information element (ssb-PositionsInBurst) is 001, corresponding to SSB index 0, 1, 2 respectively, and the newly added information element is 101, corresponding to SSB index 0, 1, 2 respectively, SSB index 0 is 0 in the information element (ssb-PositionsInBurst). In this case, in this newly added information element, the bit value 1 corresponding to SSB index 0 is invalid, and only the bit value corresponding to SSB index 2 is valid. Alternatively, the number of bits of the newly added information element may be the same as the number of bits of the bit value 1 in the information element (ssb-PositionsInBurst).In other words, each bit of the newly added information element sequentially corresponds to the SSB index of the corresponding bit 1 in the information element (ssb-PositionsInBurst). When the bit value of a certain bit is 0, it indicates that the transmission of the SSB or the PBCH of the SSB that should have been originally transmitted corresponding to that bit is stopped. When the bit value of a certain bit is 1, it indicates the normal transmission of the SSB or the PBCH of the SSB corresponding to that bit.

[0110] In some embodiments, when there is a QCL relationship between the first SSB of the first cell and the reference signal of the second cell, the method may further include the following steps.

[0111] Step 602: The first network device transmits fourth indication information to the second network device. The fourth indication information is used to indicate the second cell corresponding to the first cell so that the terminal device performs downlink reception on the reference signal of the first cell based on the reference signal of the second cell, or determines the measurement result of the first cell, or is used to indicate that there is a quasi-collocation relationship between the first synchronization signal block of the first cell and the second synchronization signal block of the second cell. Here, the reference signal of the second cell and the reference signal of the first cell include a synchronization signal block or CSI-RS.

[0112] Thereby, the terminal device of the adjacent cell can perform downlink synchronization and downlink channel estimation of the first cell by using the reference signal of the second cell, or perform RRM measurement of the first cell.

[0113] In some embodiments, this fourth indication information reuses information elements within the existing Served Cell Information NR. For example, it may be implicitly indicated by reusing the measurement timing field within an existing Measurement Timing Configuration for transmitting measurement timing assistance information. This measurement timing field can be represented using the Abstract Syntax Notation One (ASN.1) data format.

[0114]

Table 1

[0115] In some embodiments, the serving cell information of the first cell or the newly added information elements within the serving cell of the second cell may indicate the second cell. For example, in the serving cell information of the first cell, the newly added information element may indicate the identifier (NCGI or PCI) of the second cell, and preferably may further indicate the measurement timing information. Alternatively, an information element indicating which first cell this cell can function as the second cell of may be added to the serving cell information of the second cell.

[0116] For example, this information element may be a quasi-collocation cell identification information element, which represents the identifier of the second cell and indicates that the first synchronization signal block of the first cell and the second synchronization signal block of the second cell are in a quasi-collocation relationship. For example, in the serving cell information of the first cell, if the newly added information element indicates the identifier (NCGI or PCI) of the second cell, it indicates that the first SSB of the first cell and the second SSB of the second cell with the same index as the first SSB are in a quasi-collocation relationship.

[0117] In some embodiments, when there is no QCL relationship between the first SSB of the first cell and the reference signal of the second cell, the network device may send a discovery reference signal to the terminal device. The method may further include the following steps.

[0118] Step 603: The first network device sends fifth indication information to the second network device, and the fifth indication information is used to indicate that the terminal device is supported to perform downlink reception on the reference signal of the first cell based on the discovery reference signal, or to determine the measurement result of the first cell, or to indicate that the first synchronization signal block and the discovery reference signal are in a quasi-collocation relationship.

[0119] In some embodiments, the fifth indication information may be a newly designed information element within the serving cell information field. By sending the fifth indication information, the first network device indicates that the terminal device can perform downlink reception on the first cell reference signal based on the discovery reference signal, or determine the measurement result of the first cell. If the fifth indication information is not sent, it indicates that the terminal device cannot perform downlink reception on the first cell reference signal based on the discovery reference signal, or determine the measurement result of the first cell.

[0120] In some embodiments, the fifth indication information may include an identifier indicating the discovery reference signal, and the identifier indicates that the first synchronization signal block of the first cell and the discovery reference signal are in a quasi - co - location relationship. For example, when the second network device receives the fifth indication information, it indicates that the first SSB of the first cell and the discovery reference signal corresponding to the identifier are in a quasi - co - location relationship, implicitly indicating that the terminal device performs downlink reception for the first cell reference signal based on the discovery reference signal, or determines the measurement result of the first cell.

[0121] Preferably, the fifth indication information may further include the configuration information of the discovery reference signal, and the configuration information of the discovery reference signal includes at least one of the center frequency point of the discovery reference signal, the sub - carrier spacing, the transmission period, or the index of the reference signal transmitted within the transmission period. That is, the newly designed information element is used to indicate the configuration information of the discovery reference signal. When the fifth indication information is included in the serving cell information field, it implicitly indicates that the terminal device can perform downlink reception for the first cell reference signal based on the discovery reference signal, or determine the measurement result of the first cell, and the configuration information of the discovery reference signal may be determined based on the fifth indication information.

[0122] In some embodiments, the first network device transmits the third indication information and / or the fourth indication information and / or the fifth indication information to the second network device in the Xn connection establishment procedure. Here, the third indication information and / or the fourth indication information and / or the fifth indication information are carried by the serving cell information included in the Xn Setup Request message or the Xn Setup Response message.

[0123] In some embodiments, when the first cell changes the transmission state of the first SSB to stop the transmission of the first SSB, or resumes the transmission of the first SSB from the state of stopping the transmission of the first SSB, or the second cell is changed (update of the second cell identifier or change of the frequency point or measurement timing information of the second cell SSB), or the configuration information of the discovery reference signal is updated, the first network device transmits the third indication information and / or the fourth indication information and / or the fifth indication information to the second network device in the NG-RAN node configuration update procedure. Here, the third indication information and / or the fourth indication information and / or the fifth indication information are carried by the serving cell information included in the NG-RAN NodeConfiguration Update message.

[0124] The above takes as an example the case where the first network device notifies the second network device whether the first cell to be controlled has stopped transmitting the first SSB, the PBCH of the first SSB, or the reference cell (second cell) of the first cell, and the configuration information of the discovery reference signal of the first cell. However, the first cell may be one or more, that is, the first network device may transmit the above information of multiple cells it controls to the second network device. The description thereof is omitted here.

[0125] In some embodiments, before stopping the transmission of the synchronization signal block and system information, or before stopping the transmission of the physical broadcast channel (PBCH) carrying the master information block (MIB) in the synchronization signal block and system information, the first network device may transmit the third indication information and / or the fourth indication information and / or the fifth indication information to the first terminal device by the system information of the first cell or a dedicated RRC message. Specifically, reference may be made to the transmission method of the first indication information or the second indication information in Embodiment 1, and the description thereof is omitted here. The first terminal device may be a terminal device of the first cell. When the second cell also belongs to the control of the first network device, the first terminal device may be a terminal device of the second cell.

[0126] In some embodiments, the first network device may receive information indicating whether a cell controlled by the second network device and transmitted by the second network device stops transmitting the SSB or the PBCH of the SSB, the reference cell of the cell, the configuration information of the discovery reference signal of the cell, and the like. This embodiment is the same as the third instruction information, the fourth instruction information, and the fifth instruction information, and the description thereof is omitted here.

[0127] It should be noted that any one of the above steps 601 to 603 may be implemented alone or in combination, and the embodiments of the present invention are not limited thereto.

[0128] According to this embodiment, between network devices, it is possible to exchange instruction information on whether to stop transmitting the SSB. By the adjacent base station of the energy-saving cell broadcasting the exchanged information to the terminal device via the system information, the terminal device can detect the energy-saving cell and perform RRM measurement on the energy-saving cell using the discovery reference signal or the reference signal of the second cell.

[0129] <Example 5> The embodiments of the present invention provide an information transmission and reception method, which will be described from the perspective of the second network device. The second network device may be a network device to which an adjacent cell of the first cell belongs. The following will be described in detail.

[0130] FIG. 7 is a schematic diagram of another example of the information transmission and reception method according to the embodiment of the present invention. As shown in FIG. 7, the method includes the following steps.

[0131] Step 701: The second network device receives the third instruction information sent by the first network device. The third instruction information is used to indicate that the first network device stops or resumes transmitting the first synchronization signal block to be transmitted in the first cell, or is used to indicate that the first network device stops or resumes transmitting the physical broadcast channel (PBCH) (hereinafter abbreviated as the PBCH of the first SSB) that carries the master information block (MIB) of the first synchronization signal block to be transmitted.

[0132] Preferably, the method may further include the following steps.

[0133] Step 702: The second network device receives the fourth instruction information sent by the first network device. The fourth instruction information is used to indicate the second cell corresponding to the first cell so that the terminal device performs downlink reception on the reference signal of the first cell based on the reference signal of the second cell, or determines the measurement result of the first cell, or is used to indicate that the first synchronization signal block of the first cell and the second synchronization signal block of the second cell are in a quasi-collocation relationship.

[0134] Preferably, the method may further include the following steps.

[0135] Step 703: The second network device receives the fifth instruction information sent by the first network device. The fifth instruction information is used to indicate that it is supported that the terminal device performs downlink reception on the reference signal of the first cell based on the discovery reference signal, or determines the measurement result of the first cell, or is used to indicate that the first synchronization signal block and the discovery reference signal are in a quasi-collocation relationship.

[0136] For the embodiments of steps 701-703, reference may be made to steps 601-603 of embodiment 4, and the description is omitted here.

[0137] In some embodiments, the method may further include a step in which the second network device transmits the third instruction information and / or the fourth instruction information and / or the fifth instruction information to a second terminal device. The second terminal device is a terminal device provided with a service by the second network device.

[0138] In some embodiments, the second network device conveys the third instruction information and / or the fourth instruction information and / or the fifth instruction information via system information or a dedicated RRC message.

[0139] In some embodiments, the system information is the system information of the first cell or the system information of an adjacent cell. The system information of the first cell is included in the system information of the adjacent cell, and the adjacent cell is a cell controlled by the second network device.

[0140] Preferably, when the configuration information of the discovery reference signal indicated by the fifth instruction information is broadcast via the system information of the adjacent cell, the configuration information of the discovery reference signal may further include the synchronization timing offset between the first cell and the adjacent cell in half-frame units. In some embodiments, the second network device may transmit to the first network device what indicates whether the cell controlled by the second network device stops transmitting the SSB or the PBCH of the SSB, or the reference cell of the cell, the configuration information of the discovery reference signal of the cell, etc. The implementation form is the same as the third instruction information, the fourth instruction information, and the fifth instruction information, and the description thereof is omitted here.

[0141] It should be noted that any one of the above steps 701 to 703 may be implemented alone or in combination, and the embodiments of the present invention are not limited thereto.

[0142] According to this embodiment, between network devices, it is possible to exchange instruction information on whether to stop transmitting the SSB. By the adjacent base station of the power saving cell broadcasting the exchange information to the terminal device via the system information, the terminal device can detect the power saving cell and perform RRM measurement on the power saving cell using the discovery reference signal or the reference signal of the second cell.

[0143] <Example 6> Embodiments of the present invention provide an information processing apparatus. The apparatus may be, for example, a network device, or one or more components or elements configured in a network device. The apparatus according to the embodiments of the present invention corresponds to the methods according to Embodiments 3 to 5, and the description of the same content as in Embodiments 3 to 5 is omitted here.

[0144] FIG. 8 is a schematic diagram of an example of an information transmission / reception apparatus according to an embodiment of the present invention. As shown in FIG. 8, the information transmission / reception apparatus 800 includes the following components.

[0145] The third transmission unit 801 stops transmitting the physical broadcast channel (PBCH) carrying the master information block (MIB) of the first synchronization signal block to be transmitted in the first cell to the terminal device, or stops transmitting the first synchronization signal block to be transmitted in the first cell to the terminal device, and the first network device transmits the discovery reference signal to the terminal device.

[0146] Here, the discovery reference signal is the synchronization reference signal (SS) included in the first synchronization signal block of the first cell.

[0147] In some embodiments, the first synchronization signal block of the first cell and the discovery reference signal are in a QCL relationship.

[0148] In some embodiments, the first synchronization signal block and the discovery reference signal in a quasi-collocation relationship have the same index.

[0149] In some embodiments, the third transmitting unit may transmit the first instruction information and / or the second instruction information to the terminal device. For the embodiments of the first instruction information and / or the second instruction information, reference may be made to Embodiment 1.

[0150] In some embodiments, 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 state or a non-active state.

[0151] In some embodiments, the first instruction information and / or the second instruction information are carried by the system information of the first cell, the system information of the second cell, or a dedicated RRC message.

[0152] In some embodiments, the system information of the first cell is included in the system information of the second cell.

[0153] In some embodiments, the second instruction information further includes the configuration information of the discovery reference signal, and the configuration information of the discovery reference signal includes at least one of the center frequency point of the discovery reference signal, the subcarrier spacing, the transmission period, or the index of the reference signal transmitted within the transmission period.

[0154] In some embodiments, the configuration information of the discovery reference signal further includes the synchronization timing offset between the first cell and the second cell.

[0155] FIG. 9 is a schematic diagram of another example of an information transmission / reception device according to an embodiment of the present invention, and the information transmission / reception device is applied to a first network device to which the first cell belongs. As shown in FIG. 9, the information transmission / reception device 900 includes the following components.

[0156] The first transmitting unit 901 transmits third instruction information to the second network device. The third instruction information is used to indicate that the first network device stops or resumes transmitting the first synchronization signal block to be transmitted in the first cell, or is used to indicate that the first network device stops or resumes transmitting a physical broadcast channel (PBCH) that carries a master information block (MIB) of the first synchronization signal block to be transmitted.

[0157] In some embodiments, the first transmitting unit further transmits fourth instruction information and / or fifth instruction information to the second network device. For the embodiments of the third instruction information and / or the fourth instruction information and / or the fifth instruction information, reference may be made to Embodiment 4 and Embodiment 5, and the description is omitted here.

[0158] In some embodiments, the first transmitting unit transmits the third instruction information and / or the fourth instruction information and / or the fifth instruction information to the second network device in the Xn connection establishment procedure. Here, the third instruction information and / or the fourth instruction information and / or the fifth instruction information are carried by serving cell information included in an Xn establishment request (Xn Setup Request) message or an Xn establishment response (Xn Setup Response) message.

[0159] In some embodiments, the first transmitting unit transmits the third instruction information and / or the fourth instruction information and / or the fifth instruction information to the second network device in the NG-RAN node configuration update procedure. Here, the third instruction information and / or the fourth instruction information and / or the fifth instruction information are carried by serving cell information included in an NG-RAN node configuration update (NG-RAN NodeConfiguration Update) message.

[0160] In some embodiments, the first transmitting unit transmits the third instruction information and / or the fourth instruction information and / or the fifth instruction information to the first terminal device.

[0161] In some embodiments, before the first network device stops transmitting the synchronization signal block and system information, or before the physical broadcast channel (PBCH) carrying the master information block (MIB) in the synchronization signal block and the transmission of system information are stopped, the first transmission unit conveys and transmits the third indication information and / or the fourth indication information and / or the fifth indication information by the system information of the first cell or a dedicated RRC message.

[0162] FIG. 10 is a schematic diagram of another example of an information transmission / reception device according to an embodiment of the present invention, and the information transmission / reception device is applied to a second network device. As shown in FIG. 10, the information transmission / reception device 1000 includes the following components.

[0163] The first reception unit 1001 receives the third indication information transmitted by the first network device. The third indication information is used to indicate that the first network device stops or resumes transmitting the first synchronization signal block to be transmitted in the first cell, or is used to indicate that the first network device stops or resumes transmitting the physical broadcast channel (PBCH) carrying the master information block (MIB) of the first synchronization signal block to be transmitted.

[0164] In some embodiments, the first reception unit further receives the fourth indication information and / or the fifth indication information transmitted by the first network device. For the embodiments of the third indication information and / or the fourth indication information and / or the fifth indication information, reference may be made to Embodiment 4 and Embodiment 5, and the description thereof is omitted here.

[0165] In some embodiments, the device may further include the following components (not shown).

[0166] The second transmission unit transmits the third indication information and / or the fourth indication information and / or the fifth indication information to the second terminal device.

[0167] In some embodiments, the second transmitting unit conveys the third instruction information and / or the fourth instruction information and / or the fifth instruction information via system information or a dedicated RRC message.

[0168] In some embodiments, the system information is the system information of the first cell or the system information of the second cell or an adjacent cell.

[0169] In some embodiments, the system information of the first cell is included in the system information of the second cell or an adjacent cell.

[0170] In some embodiments, the first receiving unit receives the third instruction information and / or the fourth instruction information and / or the fifth instruction information in the Xn connection establishment procedure. Here, the third instruction information and / or the fourth instruction information and / or the fifth instruction information are conveyed by the serving cell information included in the Xn Setup Request message or the Xn Setup Response message.

[0171] In some embodiments, the first receiving unit receives the third instruction information and / or the fourth instruction information and / or the fifth instruction information in the NG-RAN node configuration update procedure. Here, the third instruction information and / or the fourth instruction information and / or the fifth instruction information are conveyed by the serving cell information included in the NG-RAN NodeConfiguration Update message.

[0172] In some embodiments, the third instruction information and / or the fourth instruction information and / or the fifth instruction information reuse the information elements in the existing serving cell information field or are newly added information elements.

[0173] In some embodiments, the configuration information of the discovery reference signal further includes the synchronization timing offset between the first cell and the second cell or an adjacent cell.

[0174] Each of the above embodiments merely illustrates embodiments of the present invention, and the present invention is not limited thereto. Appropriate modifications may be made based on each of the above embodiments. For example, each of the above embodiments may be used alone, or one or more of the above embodiments may be used in combination.

[0175] Note that the above only describes the components or modules related to the present invention, but the present invention is not limited thereto. The information transmission / reception apparatuses 800 to 1000 may further include other components or modules. For specific details of these components or modules, related technologies may be referred to. Also, the various components or modules described above may be implemented by hardware devices such as a processor, a memory, a transmitter, and a receiver, and the present invention is not limited thereto.

[0176] <Example 7> Embodiments of the present invention provide an information processing apparatus. The apparatus may be, for example, a terminal device, or one or more components or elements configured in a terminal device. The apparatus according to an embodiment of the present invention corresponds to the method according to Embodiment 2, and here, the description of the same content as in Embodiment 2 is omitted.

[0177] FIG. 11 is a schematic diagram of another example of an information processing apparatus according to an embodiment of the present invention. As shown in FIG. 11, the information processing apparatus 1100 includes the following parts.

[0178] The second receiving unit 1101 receives a discovery reference signal transmitted by a network-side device.

[0179] The first processing unit 1102 performs downlink reception on the first cell reference signal based on the discovery reference signal, or determines a measurement result of the first cell.

[0180] Here, the discovery reference signal is a synchronization reference signal (SS) included in a first synchronization signal block of the first cell.

[0181] In some embodiments, when the second receiving unit fails to receive the first synchronization signal block of the first cell transmitted by the network side device, or fails to receive the PBCH of the first synchronization signal block, the first processing unit performs downlink reception on the first cell reference signal based on the discovery reference signal, or determines the measurement result of the first cell.

[0182] In some embodiments, the first synchronization signal block of the first cell and the discovery reference signal are in a QCL relationship.

[0183] In some embodiments, the first synchronization signal block and the discovery reference signal in a quasi - co - location relationship have the same index.

[0184] In some embodiments, the second receiving unit further receives the first indication information and / or the second indication information transmitted by the network side device. For the embodiments of the first indication information and / or the second indication information, reference may be made to Embodiment 1.

[0185] In some embodiments, 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 state or a non - active state.

[0186] In some embodiments, the second receiving unit receives the first indication information and / or the second indication information transmitted by the network device to which the first cell belongs, or receives the first indication information and / or the second indication information forwarded by an adjacent network device of the network device to which the first cell belongs.

[0187] In some embodiments, the first indication information and / or the second indication information are carried via the system information of the first cell, the system information of the second cell, the system information of the adjacent cell, or a dedicated RRC message.

[0188] In some embodiments, the system information of the first cell is included in the system information of the second cell or in the system information of an adjacent cell.

[0189] In some embodiments, the second indication information further includes the configuration information of the discovery reference signal, and the configuration information of the discovery reference signal includes at least one of the center frequency point of the discovery reference signal, the subcarrier spacing, the transmission period, or the index of the reference signal transmitted within the transmission period.

[0190] In some embodiments, the configuration information of the discovery reference signal further includes the synchronization timing offset between the first cell and the second cell or an adjacent cell.

[0191] In some embodiments, based on the measurement result of the measurement on the discovery reference signal, the first processing unit performs random access, SSB-based radio link monitoring (RLM), SSB-based beam failure detection (BFD), SSB-based radio resource management (RRM) measurement, cell selection and / or reselection in the first cell.

[0192] In some embodiments, the first processing unit performs downlink reception on the CSI-RS that is in a quasi-collocation relationship with the first synchronization signal block based on the discovery reference signal.

[0193] In some embodiments, when receiving the CSI-RS that is in a quasi-collocation relationship with the first synchronization signal block, the first processing unit sets the downlink reception parameters for receiving the discovery reference signal as the downlink reception parameters for receiving the CSI-RS that is in a quasi-collocation relationship with the first synchronization signal block.

[0194] In some embodiments, 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 discovery reference signal, and receives the CSI-RS based on the downlink reception parameters for receiving the discovery reference signal.

[0195] Each of the above embodiments merely illustrates an embodiment of the present invention, and the present invention is not limited thereto. Appropriate modifications may be made based on each of the above embodiments. For example, each of the above embodiments may be used alone, or one or more of the above embodiments may be used in combination.

[0196] Note that the above only describes the components or modules related to the present invention, but the present invention is not limited thereto. The information processing apparatus 1100 may further include other components or modules. For specific details of these components or modules, reference may be made to related technologies. Also, the various components or modules described above may be implemented by hardware devices such as a processor, a memory, a transmitter, and a receiver, and the present invention is not limited thereto.

[0197] <Example 8> Embodiments of the present invention further provide a communication system including a network device and a terminal device.

[0198] In some embodiments, the network device includes the device described in Example 6 and is configured to execute the method described in Example 3 or Example 4 or Example 5. Since the method was described in detail in Example 3 or Example 4 or Example 5, the content thereof is incorporated herein by reference and the description is omitted.

[0199] In some embodiments, the terminal device includes the device described in Example 7 and is configured to execute the method described in Example 1. Since the method was described in detail in Example 1, the content thereof is incorporated herein by reference and the description is omitted.

[0200] Embodiments of the present invention further provide a network device, such as a gNB (base station in NR), etc.

[0201] FIG. 12 is a schematic diagram of the configuration of a network device according to an embodiment of the present invention. As shown in FIG. 12, the network device 1200 may include a processor 1201 and a memory 1202, and the memory 1202 is connected to the processor 1201. The memory 1202 may store various data, and may further store a program for information processing, execute the program under the control of the processor 1201, receive various information transmitted by the terminal device, and transmit various information to the terminal device.

[0202] In some embodiments, the functions of the device of Embodiment 6 may be integrated into the processor 1201. Here, the processor 1201 may be configured to execute a program to implement the method described in Embodiment 4 or Embodiment 5 or Embodiment 3. The content thereof is incorporated herein by reference and the description thereof is omitted here.

[0203] In some other embodiments, the device of Embodiment 6 may be configured separately from the processor 1201. For example, the device of Embodiment 6 may be configured as a chip connected to the processor 1201, and the functions of the device of Embodiment 6 are realized under the control of the processor 1201.

[0204] Also, as shown in FIG. 12, the network device 1200 may further include a transceiver 1203, an antenna 1204, etc. The functions of the above members are similar to those in the prior art, and the description thereof is omitted here. Note that the network device 1200 does not necessarily include all the units shown in FIG. 12. Also, the network device 1200 may further include units not shown in FIG. 12, and reference may be made to the prior art.

[0205] Embodiments of the present invention further provide a terminal device, such as a UE.

[0206] FIG. 13 is a schematic diagram of a terminal device according to an embodiment of the present invention. As shown in FIG. 13, the terminal device 1300 may include a processor 1301 and a memory 1302. The memory 1302 stores data and programs and is connected to the processor 1301. Note that this figure is illustrative, and other types of structures may be used to supplement or replace this structure to implement communication functions or other functions.

[0207] In some embodiments, the functions of the device of Example 7 may be integrated into the processor 1301. Here, the processor 1301 may be configured to execute a program to implement the method described in Example 1. The content thereof is incorporated herein by reference and the description thereof is omitted here.

[0208] In some other embodiments, the device of Example 7 may be configured separately from the processor 1301. For example, the device of Example 7 may be configured as a chip connected to the processor 1301, and the functions of the device of Example 7 are realized under the control of the processor 1301.

[0209] As shown in FIG. 13, the terminal device 1300 may further include a communication module 1303, an input unit 1304, a display 1305, a power supply 1306, etc. Here, the functions of the above units are the same as those in the prior art, and the description thereof is omitted here. Note that the terminal device 1300 does not necessarily include all the units shown in FIG. 13. Also, the terminal device 1300 may further include units not shown in FIG. 13 and may refer to the prior art.

[0210] In an embodiment of the present invention, there is further provided a computer-readable program which, when executed on a terminal device, causes the terminal device to execute the method described in Example 1.

[0211] An embodiment of the present invention further provides a storage medium storing a computer-readable program which, when executed, causes a terminal device to execute the method described in Example 1.

[0212] In an embodiment of the present invention, there is further provided a computer-readable program which, when executed on a network device, causes the network device to execute the method described in Example 3 or 4 or 5.

[0213] In an embodiment of the present invention, there is further provided a storage medium storing a computer-readable program which, when executed, causes a network device to execute the method described in Example 3 or 4 or 5.

[0214] The above apparatus and method of the present invention may be implemented by hardware, or may be implemented by combining hardware and software. The present invention relates to a computer-readable program which, when executed by a logic unit, causes the logic unit to implement the above-described apparatus or component, or to implement the various methods or steps described above. The present invention relates to a storage medium for storing the above program, such as a hard disk, a magnetic disk, an optical disk, a DVD, a flash memory, etc.

[0215] Each processing method in each apparatus described with reference to the embodiments of the present invention may be implemented by hardware, a software module executed by a processor, or a combination of both. For example, one or more of the functional block diagrams shown in the drawings, or a combination of one or more of the functional block diagrams, may correspond to each software module of the flow of the computer program, or may correspond to each hardware module. These software modules may each correspond to each step shown in the drawings. These hardware modules may be realized by hardware-implementing these software modules using, for example, a field programmable gate array (FPGA).

[0216] The software module may be located in a RAM memory, a flash memory, a ROM memory, an EPROM memory, an EEPROM memory, a register, a hard disk, a mobile hard disk, a CD-ROM, or any other form of storage medium known to those skilled in the art. The storage medium may be connected to the processor so that the processor reads information from or writes information to the storage medium, or the storage medium may be a component of the processor. The processor and the storage medium may be located in an ASIC. The software module may be stored in the memory of a mobile terminal or may be stored in a memory card inserted into the mobile terminal. For example, when a device (such as a mobile terminal) uses a relatively large-capacity MEGA-SIM card or a large-capacity flash memory device, the software module may be stored in the MEGA-SIM card or the large-capacity flash memory device.

[0217] One or more functional blocks and / or one or more combinations of functional blocks in the functional block diagrams described in the drawings may be implemented by a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or other programmable logic device, discrete gate or transistor logic device, discrete hardware component, or any suitable combination thereof for performing the functions described in this application. One or more functional blocks and / or one or more combinations of functional blocks in the functional block diagrams described in the drawings may be implemented, for example, by a combination of computing devices, such as a combination of a DSP and a microprocessor, a combination of multiple microprocessors, one or more microprocessors in combination with DSP communication, or any other configuration.

[0218] The present invention has been described with reference to specific embodiments above. However, the above description is merely exemplary and does not limit the protection scope of the present invention. Without departing from the spirit and principle of the present invention, various modifications and changes may be made to the present invention, and these modifications and changes are also within the scope of the present invention. Further, the following supplementary notes are disclosed with respect to the embodiments including the above examples. (Supplementary Note 1) An information processing method applied to a terminal device, comprising: a step of the terminal device receiving a discovery reference signal transmitted by a network-side device; a step of the terminal device performing downlink reception for the first cell reference signal based on the discovery reference signal, or determining a measurement result of the first cell, wherein the discovery reference signal is a synchronization reference signal (SS) included in a first synchronization signal block of the first cell. (Supplementary Note 2) The method according to Supplementary Note 1, further comprising a step of, when the terminal device fails to receive the first synchronization signal block of the first cell transmitted by the network-side device, or fails to receive the PBCH of the first synchronization signal block, the terminal device performing downlink reception for the first cell reference signal based on the discovery reference signal, or determining a measurement result of the first cell. (Supplementary Note 3) The method according to Supplementary Note 1 or 2, wherein the first synchronization signal block of the first cell and the discovery reference signal are in a QCL relationship. (Supplementary Note 4) The method according to any one of Supplementary Notes 1 to 3, wherein the first synchronization signal block and the discovery reference signal in the quasi-collocation relationship have the same index. (Supplementary Note 5) The step in which the terminal device receives first instruction information transmitted by a network-side device, where the first instruction information is used to indicate stopping the transmission of a first synchronization signal block to be transmitted by the first cell, or is used to indicate stopping the transmission of a physical broadcast channel (PBCH) that carries a master information block (MIB) of the first synchronization signal block to be transmitted, the method according to any one of Appendices 1 to 4, further comprising this step. (Appendix 6) The first instruction information is further used to indicate the index of the first synchronization signal block whose transmission has been stopped, or is used to indicate the index of the first synchronization signal block for which the transmission of the PBCH carrying the MIB has been stopped, the method according to Appendix 5. (Appendix 7) The step in which the terminal device receives second instruction information transmitted by a network-side device, where the second instruction information is used to indicate that the terminal device performs downlink reception for a reference signal of the first cell based on a discovery reference signal, or determines a measurement result of the first cell, or is used to indicate that the first synchronization signal block and the discovery reference signal are in a quasi-collocation relationship, the method according to any one of Appendices 1 to 6, further comprising this step. (Appendix 8) 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 state or a non-active state, the method according to any one of Appendices 1 to 7. (Appendix 9) The terminal device receives the first instruction information and / or the second instruction information transmitted by the network device to which the first cell belongs, or The terminal device receives the first instruction information and / or the second instruction information transferred by an adjacent network device of the network device to which the first cell belongs, the method according to any one of Appendices 5 to 7. (Appendix 10) The second instruction information further includes configuration information of the discovery reference signal, and the configuration information of the discovery reference signal includes at least one of a center frequency point of the discovery reference signal, a subcarrier spacing, a transmission period, or an index of a reference signal transmitted within the transmission period. The method according to any one of Appendices 7 to 9. (Appendix 11) The configuration information of the discovery reference signal further includes a synchronization timing offset between the first cell and the second cell or an adjacent cell. The method according to Appendix 10. (Appendix 12) The step in which the terminal device determines a measurement result of the first cell based on the discovery reference signal is The step in which the terminal device executes random access, SSB-based radio link monitoring (RLM), SSB-based beam failure detection (BFD), SSB-based radio resource management (RRM) measurement, cell selection and / or reselection in the first cell based on a measurement result of a measurement on the discovery reference signal. The method according to any one of Appendices 1 to 11. (Appendix 13) The step in which the terminal device performs downlink reception on the first cell reference signal based on the discovery reference signal is The step in which the terminal device performs downlink reception on a CSI-RS that has a quasi-collocation relationship with the first synchronization signal block based on the discovery reference signal. The method according to any one of Appendices 1 to 11. (Appendix 14) When receiving a CSI-RS that has a quasi-collocation relationship with the first synchronization signal block, the terminal device sets downlink reception parameters for receiving the discovery reference signal as downlink reception parameters for receiving the CSI-RS that has a quasi-collocation relationship with the first synchronization signal block. The method according to Appendix 13. (Appendix 15) The method according to appended note 13, 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 discovery reference signal, and receives the CSI-RS based on the downlink reception parameters for receiving the discovery reference signal. (Appended note 16) A terminal device including a memory storing a computer program and a processor, wherein the processor is configured to implement the method according to any one of appended notes 1 to 15 by executing the computer program. (Appended note 17) A communication system including the terminal device according to appended note 16. (Network side) (Appended note 1) An information transmission / reception method applied to a first network device to which a first cell belongs, The method includes: stopping the first network device from transmitting a physical broadcast channel (PBCH) carrying a master information block (MIB) of a first synchronization signal block to be transmitted by the first cell to a terminal device, or stopping the first network device from transmitting the first synchronization signal block to be transmitted by the first cell to the terminal device; and the first network device transmitting a discovery reference signal to the terminal device. The method, wherein the discovery reference signal is a synchronization reference signal (SS) included in the first synchronization signal block of the first cell. (Appended note 2) The method according to appended note 1, wherein the first synchronization signal block of the first cell and the discovery reference signal are in a QCL relationship. (Appended note 3) The method according to appended note 1 or 2, wherein the first synchronization signal block and the discovery reference signal in the quasi-collocation relationship have the same index. (Appended note 4) The step in which the first network device transmits first indication information to the terminal device, where the first indication information is used to indicate stopping the transmission of a first synchronization signal block to be transmitted by the first cell, or is used to indicate stopping the transmission of a physical broadcast channel (PBCH) that carries a master information block (MIB) of the first synchronization signal block to be transmitted, the method according to any one of Appendices 1 to 3, further comprising this step. (Appendix 5) The first indication information is further used to indicate the index of the first synchronization signal block whose transmission has been stopped, or is used to indicate the index of the first synchronization signal block to be transmitted for which the transmission of the PBCH carrying the MIB has been stopped, the method according to Appendix 4. (Appendix 6) The step in which the first network device transmits second indication information to the terminal device, where the second indication information is used to indicate that the terminal device performs downlink reception for a reference signal of the first cell based on a discovery reference signal, or determines a measurement result of the first cell, or is used to indicate that the first synchronization signal block and the discovery reference signal are in a quasi-collocation relationship, the method according to any one of Appendices 1 to 5, further comprising this step. (Appendix 7) 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 state or a non-active state, the method according to any one of Appendices 1 to 6. (Appendix 8) The first indication information and / or the second indication information is carried by system information of a first cell, system information of a second cell, or a dedicated RRC message, the method according to any one of Appendices 5 to 7. (Appendix 9) The system information of the first cell is included in the system information of the second cell, the method according to Appendix 8. (Appendix 10) The second instruction information further includes configuration information of the discovery reference signal, and the configuration information of the discovery reference signal includes at least one of a center frequency point of the discovery reference signal, a subcarrier spacing, a transmission period, or an index of a reference signal transmitted within the transmission period. The method according to any one of Appendices 6 to 9. (Appendix 11) The configuration information of the discovery reference signal further includes a synchronization timing offset between the first cell and the second cell. The method according to Appendix 10. (Appendix 12) A network device including a memory storing a computer program and a processor, wherein the processor is configured to implement the method according to any one of Appendices 1 to 11 by executing the computer program. (Appendix 13) A communication system including the network device according to Appendix 12. (Xn interface) (Appendix 1) An information transmission and reception method applied to a first network device to which a first cell belongs, The step of the first network device transmitting third instruction information to a second network device, where the third instruction information is used to indicate that the first network device stops or resumes transmitting a first synchronization signal block to be transmitted by the first cell, or is used to indicate that the first network device stops or resumes transmitting a physical broadcast channel (PBCH) carrying a master information block (MIB) of the first synchronization signal block to be transmitted. The method includes this step. (Appendix 2) The step in which the first network device transmits fourth indication information to the second network device, where the fourth indication information is used to indicate the second cell corresponding to the first cell such that the terminal device performs downlink reception on the reference signal of the first cell based on the reference signal of the second cell, or determines the measurement result of the first cell, or is used to indicate that the first synchronization signal block of the first cell and the second synchronization signal block of the second cell are in a quasi-collocation relationship, the method according to Supplementary Note 1, further comprising this step. (Supplementary Note 3) The step in which the first network device transmits fifth indication information to the second network device, where the fifth indication information is used to indicate that the terminal device is supported to perform downlink reception on the reference signal of the first cell based on the discovery reference signal, or determine the measurement result of the first cell, or is used to indicate that the first synchronization signal block and the discovery reference signal are in a quasi-collocation relationship, the method according to Supplementary Note 1, further comprising this step. (Supplementary Note 4) The fifth indication information further includes configuration information of the discovery reference signal, and the configuration information of the discovery reference signal includes at least one of the center frequency point of the discovery reference signal, the subcarrier spacing, the transmission period, or the index of the reference signal transmitted within the transmission period, the method according to Supplementary Note 3. (Supplementary Note 5) In the Xn connection establishment procedure, the first network device transmits the third indication information and / or the fourth indication information and / or the fifth indication information to the second network device, and the third indication information and / or the fourth indication information and / or the fifth indication information are carried by the serving cell information included in the Xn Setup Request message or the Xn Setup Response message, the method according to any one of Supplementary Notes 1 to 4. (Supplementary Note 6) In the NG-RAN node configuration update procedure, the first network device transmits the third instruction information and / or the fourth instruction information and / or the fifth instruction information to the second network device, and the third instruction information and / or the fourth instruction information and / or the fifth instruction information are carried by the serving cell information included in the NG-RAN NodeConfiguration Update message, and the method according to any one of Appendices 1 to 4. (Appendix 7) The third instruction information and / or the fourth instruction information and / or the fifth instruction information reuse the information elements in the existing serving cell information field or are newly added information elements, and the method according to Appendix 5 or 6. (Appendix 8) The first network device transmits the third instruction information and / or the fourth instruction information and / or the fifth instruction information to the first terminal device, and the method according to Appendix 1. (Appendix 9) Before stopping the transmission of the synchronization signal block and the system information, or before stopping the transmission of the physical broadcast channel (PBCH) carrying the master information block (MIB) in the synchronization signal block and the system information, the first network device conveys the third instruction information and / or the fourth instruction information and / or the fifth instruction information by the system information of the first cell or a dedicated RRC message, and the method according to Appendix 8. (Appendix 10) An information transmission and reception method applied to a second network device, comprising: Receiving, by the second network device, third instruction information transmitted by a first network device, where the third instruction information is used to indicate that the first network device stops or resumes transmitting a first synchronization signal block to be transmitted in the first cell, or is used to indicate that the first network device stops or resumes transmitting a physical broadcast channel (PBCH) carrying the master information block (MIB) of the first synchronization signal block to be transmitted. (Appendix 11) The step in which the second network device receives fourth instruction information transmitted by the first network device, where the fourth instruction information is used to indicate that the terminal device performs downlink reception on the reference signal of the first cell based on the reference signal of the second cell, or determines the measurement result of the first cell, or is used to indicate that the second cell corresponding to the first cell is in a quasi-collocation relationship with the first cell of the first cell, or is used to indicate that the first synchronization signal block of the first cell and the second synchronization signal block of the second cell are in a quasi-collocation relationship, the method according to Appendix 10, further comprising the step. (Appendix 12) The step in which the second network device receives fifth instruction information transmitted by the first network device, where the fifth instruction information is used to indicate that the terminal device is supported to perform downlink reception on the reference signal of the first cell based on the discovery reference signal, or determine the measurement result of the first cell, or is used to indicate that the first synchronization signal block and the discovery reference signal are in a quasi-collocation relationship, the method according to Appendix 10, further comprising the step. (Appendix 13) The method according to Appendix 10 or 11, further comprising the step in which the second network device transmits the third instruction information and / or the fourth instruction information and / or the fifth instruction information to a second terminal device. (Appendix 14) In the method according to Appendix 13, the second network device conveys the third instruction information and / or the fourth instruction information and / or the fifth instruction information via system information or a dedicated RRC message. (Appendix 15) The method according to Appendix 12, where the fifth instruction information further includes configuration information of the discovery reference signal, and the configuration information of the discovery reference signal includes at least one of the center frequency point of the discovery reference signal, the subcarrier spacing, the transmission period, or the index of the reference signal transmitted within the transmission period. (Appendix 16) In the Xn connection establishment procedure, the second network device receives the third instruction information and / or the fourth instruction information and / or the fifth instruction information, and the third instruction information and / or the fourth instruction information and / or the fifth instruction information are carried by the serving cell information included in an Xn establishment request (Xn Setup Request) message or an Xn establishment response (Xn Setup Response) message, and the method according to any one of Appendices 10 to 15. (Appendix 17) In the NG-RAN node configuration update procedure, the second network device receives the third instruction information and / or the fourth instruction information and / or the fifth instruction information, and the third instruction information and / or the fourth instruction information and / or the fifth instruction information are carried by the serving cell information included in an NG-RAN node configuration update (NG-RAN NodeConfiguration Update) message, and the method according to any one of Appendices 10 to 15. (Appendix 18) The third instruction information and / or the fourth instruction information and / or the fifth instruction information reuse information elements in an existing serving cell information field or are newly added information elements, and the method according to Appendix 16 or 17. (Appendix 19) The configuration information of the discovery reference signal further includes the synchronization timing offset between the first cell and the second cell, and the method according to Appendix 15. (Appendix 20) A network device including a memory storing a computer program and a processor, wherein the processor is configured to implement the method according to any one of Appendices 1 to 19 by executing the computer program. (Appendix 21) A communication system including the network device according to Appendix 20.

Claims

Claim 1 An information transmission / reception apparatus applied to a first network device to which a first cell belongs, comprising: a first transmission unit that transmits third instruction information to a second network device, where the third instruction information is used to indicate that the first network device stops or resumes transmission of a first synchronization signal block to be transmitted by the first cell, or is used to indicate that the first network device stops or resumes transmission of a physical broadcast channel (PBCH) that carries a master information block (MIB) of the first synchronization signal block to be transmitted. Claim 2 The first transmission unit further transmits fourth instruction information to the second network device, where the fourth instruction information is used to indicate a second cell corresponding to the first cell so that a terminal device performs downlink reception on a reference signal of the first cell based on a reference signal of the second cell, or determines a measurement result of the first cell, or is used to indicate that a first synchronization signal block of the first cell and a second synchronization signal block of the second cell are in a quasi-collocation relationship. The apparatus according to claim 1. Claim 3 The first transmission unit further transmits fifth instruction information to the second network device, where the fifth instruction information is used to indicate that it is supported that a terminal device performs downlink reception on a reference signal of the first cell based on a discovery reference signal, or determines a measurement result of the first cell, or is used to indicate that a first synchronization signal block and the discovery reference signal are in a quasi-collocation relationship. The apparatus according to claim 1. Claim 4 The fifth instruction information further includes configuration information of the discovery reference signal, and the configuration information of the discovery reference signal includes at least one of a center frequency point of the discovery reference signal, a subcarrier spacing, a transmission period, or an index of a reference signal transmitted within the transmission period. The apparatus according to claim 3. Claim 5 In the Xn connection establishment procedure, the first transmission unit transmits the third instruction information and / or the fourth instruction information and / or the fifth instruction information to the second network device, and the third instruction information and / or the fourth instruction information and / or the fifth instruction information are carried by serving cell information included in an Xn establishment request (Xn Setup Request) message or an Xn establishment response (Xn Setup Response) message. The apparatus according to claim 1.

6. In the NG-RAN node configuration update procedure, the first transmission unit transmits the third instruction information and / or the fourth instruction information and / or the fifth instruction information to the second network device, and the third instruction information and / or the fourth instruction information and / or the fifth instruction information are carried by serving cell information included in an NG-RAN node configuration update (NG-RAN NodeConfiguration Update) message. The apparatus according to claim 1.

7. An information transmission / reception apparatus applied to a second network device, A first reception unit that receives third instruction information transmitted by a first network device, where the third instruction information is used to indicate that the first network device stops or resumes transmission of a first synchronization signal block to be transmitted in a first cell, or is used to indicate that the first network device stops or resumes transmission of a physical broadcast channel (PBCH) that carries a master information block (MIB) of the first synchronization signal block to be transmitted. The apparatus includes the first reception unit.

8. The apparatus according to claim 7, further including a second transmission unit that transmits the third instruction information and / or the fourth instruction information and / or the fifth instruction information to a second terminal device.

9. In the apparatus according to claim 8, the second transmission unit conveys the third instruction information and / or the fourth instruction information and / or the fifth instruction information via system information or a dedicated RRC message.

10. The first receiving unit further receives fourth indication information transmitted by the first network device, where the fourth indication information is used to indicate that the terminal device performs downlink reception on the reference signal of the first cell based on the reference signal of the second cell, or to determine the measurement result of the first cell, or is used to indicate that the second cell corresponding to the first cell is such that the first synchronization signal block of the first cell and the second synchronization signal block of the second cell are in a quasi-collocation relationship. The apparatus according to claim 7.

11. The first receiving unit further receives fifth indication information transmitted by the first network device, where the fifth indication information is used to indicate that it is supported that the terminal device performs downlink reception on the reference signal of the first cell based on the discovery reference signal, or to determine the measurement result of the first cell, or is used to indicate that the first synchronization signal block and the discovery reference signal are in a quasi-collocation relationship. The apparatus according to claim 7.

12. In the Xn connection establishment procedure, the first receiving unit receives the third indication information and / or the fourth indication information and / or the fifth indication information, where the third indication information and / or the fourth indication information and / or the fifth indication information are carried by serving cell information included in an Xn establishment request (Xn Setup Request) message or an Xn establishment response (Xn Setup Response) message. The apparatus according to claim 7.

13. In the NG-RAN node configuration update procedure, the first receiving unit receives the third indication information and / or the fourth indication information and / or the fifth indication information, where the third indication information and / or the fourth indication information and / or the fifth indication information are carried by serving cell information included in an NG-RAN node configuration update (NG-RAN NodeConfiguration Update) message. The apparatus according to claim 7.

14. An information processing apparatus applicable to a terminal device, a second receiving unit that receives a discovery reference signal transmitted by a network-side device; A first processing unit that performs downlink reception for the first cell reference signal based on the discovery reference signal, or determines a measurement result of the first cell, The discovery reference signal is a synchronization reference signal (SS) included in a first synchronization signal block of the first cell.

15. The apparatus according to claim 14, wherein the first synchronization signal block of the first cell and the discovery reference signal are in a QCL relationship.

16. The second receiving unit further receives second indication information transmitted by a network-side device, and the second indication information is used to indicate that the terminal device performs downlink reception for the reference signal of the first cell based on the discovery reference signal, or determines a measurement result of the first cell, or is used to indicate that the first synchronization signal block and the discovery reference signal are in a quasi-collocation relationship. The apparatus according to claim 14.

17. The second indication information further includes configuration information of the discovery reference signal, and the configuration information of the discovery reference signal includes at least one of a center frequency point of the discovery reference signal, a subcarrier spacing, a transmission period, or an index of a reference signal transmitted within the transmission period. The apparatus according to claim 14.

18. The first processing unit performs random access, SSB-based radio link monitoring (RLM), SSB-based beam failure detection (BFD), SSB-based radio resource management (RRM) measurement, cell selection and / or reselection in the first cell based on a measurement result of a measurement on the discovery reference signal. The apparatus according to claim 14.

19. The first processing unit performs downlink reception for a CSI-RS that is in a quasi-collocation relationship with the first synchronization signal block based on the discovery reference signal. The apparatus according to claim 14.

20. When receiving the CSI-RS that has a quasi-collocation relationship with the first synchronization signal block, the first processing unit uses the downlink reception parameter for receiving the discovery reference signal as the downlink reception parameter for receiving the CSI-RS that has a quasi-collocation relationship with the first synchronization signal block, 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 discovery reference signal, and receives the CSI-RS based on the downlink reception parameter for receiving the discovery reference signal. The apparatus according to claim 19.

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