Method, device and readable storage medium for transmitting and receiving downlink information

Abstract

This disclosure provides a method, apparatus, and readable storage medium for transmitting and receiving downlink information. The method includes: transmitting a first type of downlink information to the user equipment during a first period of discontinuous transmission of DTX state; wherein the first period is a period during which at least a portion of downlink information does not need to be transmitted under the DTX state. In this method, during the first period when the network device is in DTX state, the transmission of downlink information can be reduced to achieve energy saving; furthermore, the network device can still transmit the first type of downlink information during the first period to ensure timely communication.

Description

Technical Field

[0001] This disclosure relates to the field of wireless communication technology, and in particular to a method, apparatus and readable storage medium for transmitting and receiving downlink information. Background Technology

[0002] Network power saving is a potential issue in 3GPP Release 18 (R18), which discusses how to save power at base stations and in the network. One possible power saving method is the Discontinuous Transmission (DTX) mechanism at the base station. In DTX mode, the base station does not need to transmit certain downlink channels or downlink signals. Summary of the Invention

[0003] This disclosure provides a method, apparatus, and readable storage medium for transmitting and receiving downlink information.

[0004] In a first aspect, this disclosure provides a method for sending downlink information, performed by a network device, the method comprising:

[0005] During a first period of discontinuous transmission of DTX status, a first type of downlink information is sent to the user equipment; wherein, the first period is a period during which at least some downlink information does not need to be transmitted under the DTX status.

[0006] In the method disclosed herein, during the first period when the network device is in DTX state, the transmission of downlink information can be reduced to achieve energy saving; in addition, the network device can still transmit first type downlink information during the first period to ensure timely communication.

[0007] In some possible implementations, sending the first type of downlink information to the user equipment during the first period of discontinuous DTX state transmission includes:

[0008] During the first time period when the first carrier is in the DTX state, the first type of downlink information is transmitted to the user equipment on the first carrier.

[0009] In some possible implementations, the first type of downlink information is downlink information that is scheduled before the start time of the first time period and whose transmission time is within the first time period.

[0010] In some possible implementations, the first type of downlink information is one of the following:

[0011] Physical Downlink Shared Channel (PDSCH);

[0012] Aperiodic Channel State Information Reference Signal (CSI-RS).

[0013] In some possible implementations, the first type of downlink information is at least one of the following:

[0014] Synchronization Signal Block (SSB);

[0015] The Physical Downlink Control Channel (PDCCH) is transmitted in the First Common Search Space (CSS).

[0016] The PDSCH is scheduled by the downlink control information DCI in the first CSS.

[0017] In some possible implementations, the method further includes:

[0018] During the first time period when the first carrier is in the DTX state, the transmission of second type downlink information on the first carrier is stopped.

[0019] In some possible implementations, the second type of downlink information is: downlink information of semi-persistent transmission activated before the start time of the first time period.

[0020] In some possible implementations, the second type of downlink information is one of the following:

[0021] Semi-persistent scheduling of PDSCH;

[0022] Semi-persistent CSI-RS.

[0023] In some possible implementations, the method further includes:

[0024] Send an indication message to the user equipment, the indication message being used to indicate that the network device will enter the DTX state.

[0025] In some possible implementations, the second type of downlink information is at least one of the following:

[0026] Periodic CSI-RS;

[0027] A dedicated DCI sent to the user equipment;

[0028] DCI sent within the User Equipment Specific Search Space (USS).

[0029] Secondly, this disclosure provides a method for receiving downlink information, performed by a user equipment, the method comprising:

[0030] During the first period when the network device is in DTX state, the system listens for and receives the first type of downlink information sent by the network device, wherein the first period is a period in which at least some downlink information does not need to be sent under the DTX state.

[0031] In the method disclosed herein, during the first period when the network device is in DTX state, the user equipment can still listen to the first type of downlink information so as to communicate with the network device in a timely manner.

[0032] In some possible implementations, the step of listening to and receiving first-type downlink information during the first period when the network device is in DTX state includes:

[0033] When the first carrier is in the first time period of the DTX state, the network device listens for and receives the first type of downlink information sent by the network device on the first carrier.

[0034] In some possible implementations, the first type of downlink information is downlink information that is scheduled before the start time of the first time period and whose transmission time is within the first time period.

[0035] In some possible implementations, the first type of downlink information is one of the following:

[0036] PDSCH;

[0037] Aperiodic CSI-RS.

[0038] In some possible implementations, the first type of downlink information is at least one of the following:

[0039] SSB;

[0040] In the first CSS transmission of PDCCH;

[0041] The PDSCH scheduled by DCI in the first CSS.

[0042] In some possible implementations, the method further includes:

[0043] During the first time period when the first carrier is in the DTX state, no second type of downlink information is listened to on the first carrier.

[0044] In some possible implementations, the second type of downlink information is: downlink information of semi-persistent transmission activated before the start time of the first time period.

[0045] In some possible implementations, the second type of downlink information is one of the following:

[0046] Semi-persistent scheduling of PDSCH;

[0047] Semi-persistent CSI-RS.

[0048] In some possible implementations, the method further includes:

[0049] After receiving the indication information sent by the network device, it is determined that the second type of downlink information has been deactivated. The indication information is used to indicate that the network device will enter the DTX state.

[0050] In some possible implementations, the second type of downlink information is at least one of the following:

[0051] Periodic CSI-RS;

[0052] The dedicated DCI for the user equipment;

[0053] DCI sent within the User Equipment Specific Search Space (USS).

[0054] Thirdly, this disclosure provides a network device. The network device includes a transceiver module, wherein the transceiver module can be used to support communication devices in performing communication.

[0055] When performing the steps described in the first aspect above, the transceiver module is configured to send a first type of downlink information to the user equipment during a first period of discontinuous transmission of DTX status; wherein the first period is a period during which at least some downlink information does not need to be transmitted under the DTX status.

[0056] Fourthly, this disclosure provides a user equipment including a transceiver module, wherein the transceiver module can be used to support communication devices in performing communication.

[0057] When performing the steps described in the second aspect above, the transceiver module is configured to listen for and receive a first type of downlink information sent by the network device during a first period when the network device is in DTX state, wherein the first period is a period during which at least some downlink information does not need to be sent in the DTX state.

[0058] Fifthly, this disclosure provides a communication device, including a processor and a memory; the memory is used to store a computer program; the processor is used to execute the computer program to implement the first aspect or any possible design of the first aspect.

[0059] In a sixth aspect, this disclosure provides a communication device including a processor and a memory; the memory is used to store a computer program; the processor is used to execute the computer program to implement the second aspect or any possible design of the second aspect.

[0060] In a seventh aspect, this disclosure provides a computer-readable storage medium storing instructions (or computer programs, programs) that, when invoked and executed on a computer, cause the computer to perform the first aspect or any possible design of the first aspect.

[0061] Eighthly, this disclosure provides a computer-readable storage medium storing instructions (or computer programs, programs) that, when invoked and executed on a computer, cause the computer to perform the second aspect or any possible design of the second aspect.

[0062] Ninthly, this disclosure provides a communication system including a network device for performing the method of the first aspect described above and a user equipment for performing the method of the third aspect described above.

[0063] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0064] The accompanying drawings, which are included to provide a further understanding of the embodiments of this disclosure and form part of this application, illustrate exemplary embodiments of this disclosure and, together with their descriptions, serve to explain the embodiments of this disclosure and do not constitute an improper limitation of the embodiments of this disclosure. In the drawings:

[0065] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the embodiments of the present disclosure.

[0066] Figure 1 This is a schematic diagram of a wireless communication system architecture provided in an embodiment of this disclosure;

[0067] Figure 2 This is a flowchart of a method for sending and receiving downlink information provided in an embodiment of this disclosure;

[0068] Figure 3 This is a flowchart of another method for sending and receiving downlink information provided in an embodiment of this disclosure;

[0069] Figure 4 This is a schematic diagram of the DTX cycle provided in the embodiments of this disclosure;

[0070] Figure 5 This is a flowchart of another method for sending and receiving downlink information provided in an embodiment of this disclosure;

[0071] Figure 6 This is a structural diagram of a network device provided in an embodiment of this disclosure;

[0072] Figure 7 This is a structural diagram of a user equipment provided in an embodiment of this disclosure. Detailed Implementation

[0073] The embodiments of this disclosure will now be further described in conjunction with the accompanying drawings and specific implementation details.

[0074] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with those of this disclosure. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this disclosure as detailed in the appended claims.

[0075] The terminology used in this disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the present disclosure. The singular forms “a” and “the” as used in this disclosure and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any and all possible combinations of one or more of the associated listed items.

[0076] It should be understood that although the terms first, second, third, etc., may be used to describe various information in embodiments of this disclosure, such information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, first information may also be referred to as second information without departing from the scope of embodiments of this disclosure, and similarly, second information may also be referred to as first information. Depending on the context, the words “if” and “suppose” as used herein may be interpreted as “when”, “when”, or “in response to a determination”.

[0077] Embodiments of this disclosure are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this disclosure, and should not be construed as limiting this disclosure.

[0078] like Figure 1 As shown in the embodiments of this disclosure, a method for transmitting and receiving downlink information can be applied to a wireless communication system 100, which may include a network device 101 and a user equipment 102. The user equipment 102 is configured to support carrier aggregation and can be connected to multiple carrier units of the network device 101, including a primary carrier unit and one or more secondary carrier units.

[0079] It should be understood that the wireless communication system 100 described above is applicable to both low-frequency and high-frequency scenarios. Application scenarios for the wireless communication system 100 include, but are not limited to, long-term evolution (LTE) systems, LTE frequency division duplex (FDD) systems, LTE time division duplex (TDD) systems, worldwide interoperability for microwave access (WiMAX) communication systems, cloud radio access network (CRAN) systems, future 5th-generation (5G) systems, new radio (NR) communication systems, or future evolved public land mobile network (PLMN) systems.

[0080] The user equipment 102 shown above can be a terminal, access terminal, terminal unit, terminal station, mobile station (MS), remote station, remote terminal, mobile terminal, wireless communication device, terminal agent, or terminal equipment, etc. This user equipment 102 may have wireless transceiver capabilities, enabling it to communicate (e.g., wirelessly) with one or more network devices in one or more communication systems and receive network services provided by the network devices. These network devices include, but are not limited to, the network device 101 shown in the figure.

[0081] Among them, user equipment (UE) 101 can be a cellular phone, cordless phone, session initiation protocol (SIP) phone, wireless local loop (WLL) station, personal digital assistant (PDA) device, handheld device with wireless communication function, computing device or other processing device connected to a wireless modem, vehicle-mounted device, wearable device, terminal device in future 5G network or terminal device in future evolved PLMN network, etc.

[0082] Network device 101 can be an access network device (or access site). Access network device refers to equipment that provides network access functionality, such as a radio access network (RAN) base station. Specifically, network device 101 may include a base station (BS), or a base station and radio resource management equipment used to control the base station. Network device 101 may also include relay stations (relay equipment), access points, and base stations in future 5G networks, base stations in future evolved PLMN networks, or NR base stations. Network device 101 can be a wearable device or an in-vehicle device. Network device 101 can also be a communication chip with a communication module.

[0083] For example, network equipment 101 includes, but is not limited to: next-generation base stations (gnodeB, gNB) in 5G, evolved node B (eNB) in LTE systems, radio network controllers (RNC), node B (NB) in WCDMA systems, radio controllers and base station controllers (BSC) in CRAN systems, base transceiver stations (BTS) in GSM or CDMA systems, home base stations (e.g., home evolved nodeB, or home node B, HNB), baseband units (BBU), transmitting and receiving points (TRP), transmitting points (TP), or mobile switching centers, etc.

[0084] This disclosure provides a method for sending and receiving downlink information. (Refer to...) Figure 2 , Figure 2 This is a method for sending and receiving downlink information according to an exemplary embodiment. For example... Figure 2 As shown, the method includes steps S201 to S202, specifically:

[0085] In step S201, during the first period of discontinuous transmission of DTX status, network device 101 sends first type of downlink information to user equipment 102; wherein, the first period is the period during which at least some downlink information does not need to be transmitted under DTX status.

[0086] In some possible implementations, the first time period is the DTX-off period of the DTX state. The DTX state may include a DTX-off period; for example, a DTX cycle may include both a DTX-off period and a DTX-on period. (Refer to...) Figure 4 As shown, the first time period (t1~t2) is the DTX-off period. During this period, network device 101 can stop sending some downlink information; during the DTX-on period (t2~t3), network device 101 can send downlink information normally.

[0087] In some possible implementations, during the first time period, network device 101 does not need to send at least a portion of the downlink information, such as a portion of downlink control information (DCI), in order to achieve effective energy saving of network device 101.

[0088] In some possible implementations, the first type of downlink information is at least one of the following:

[0089] Synchronization Signaling Block (SSB);

[0090] The Physical Downlink Control Channel (PDCCH) transmitted in the First Common Search Space (CSS);

[0091] The Physical Downlink Shared Channel (PDSCH) scheduled by the DCI in the first CSS.

[0092] In one example, the SSB includes the Primary Synchronization Signals (PSS), the Secondary Synchronization Signals (SSS), and the Physical Broadcast Channel (PBCH).

[0093] In this example, the transmission of SSB is not affected during the first time period. That is, network device 101 can maintain the transmission of SSB during the first time period, which helps user equipment 102 to still perform cell search or cell measurement based on SSB during this time period.

[0094] In one example, the first CSS can be a CSS that user device 102 needs to listen to even when Radio Resource Control (RRC) is in idle or inactive state.

[0095] In this example, since user equipment 102, which is in RRC idle or inactive state, needs to keep listening to the first CSS, network device 101 needs to keep transmitting PDCCH through the first CSS during the first time period. The PDCCH primarily carries DCI.

[0096] In one example, corresponding to the previous example, for the DCI carried by the PDCCH in the first CSS transmission, the PDSCH scheduled by the DCI can still be sent by network device 101 during the first time period.

[0097] In some examples, network device 101 may also maintain the transmission of SSB, first CSS, and PDSCH scheduled by DCI in the first CSS during the first time period.

[0098] Understandably, network device 101 can configure Type#3CSS or UE Specific Search Space (USS) for user equipment 102 entering RRC connected state. CSS can be used to send downlink control information for broadcast, multicast, and unicast, while USS can be used to send downlink control information specific to user equipment 102. Network device 101 can also configure other types of CSS for user equipment 102.

[0099] In some possible implementations, the first CSS is at least one of the following:

[0100] Type 0-PDCCH CSS;

[0101] Type 0A-PDCCH CSS;

[0102] Type 0B-PDCCH CSS;

[0103] Type 1-PDCCH CSS;

[0104] Type 1A-PDCCH CSS;

[0105] Type 2-PDCCH CSS;

[0106] Type 2A-PDCCH CSS.

[0107] Among them, the first CSS mentioned above is the CSS that needs to be listened to even when the user device 102 is in the RRC idle state or inactive state.

[0108] In this implementation, the Type0-PDCCH CSS is configured in the primary cell of the primary cell group and is used to transmit the PDCCH for scheduling System Information Block 1 (SIB1). The Type0A-PDCCH CSS is configured in the primary cell of the primary cell group and is used to transmit the PDCCH for scheduling other system information. The Type0B-PDCCH CSS is configured in the primary cell of the primary cell group and is used to transmit the PDCCH for scheduling broadcast and multicast information. The Type1-PDCCH CSS is configured in the primary cell and is used to transmit the PDCCH for scheduling random access information. The Type1A-PDCCH CSS is configured in the primary cell and is used to transmit the PDCCH for scheduling small data. The Type2-PDCCH CSS is configured in the primary cell of the primary cell group and is used to transmit the PDCCH for scheduling paging information. The Type2A-PDCCH CSS is configured in the primary cell of the primary cell group and is used to transmit the PDCCH for scheduling Paging Early Indicator (PEI).

[0109] In some possible implementations, network device 101 maintains the transmission of the first type of downlink information in the first time period, which can be applied to any carrier.

[0110] For example, during the first period when any carrier is in the DTX state, network device 101 may still transmit first type downlink information on that carrier, such as transmitting at least one of SSB, first CSS, and PDSCH scheduled by DCI in the first CSS.

[0111] In step S202, during the first time period, user equipment 102 listens for and receives the first type of downlink information sent by network device 101.

[0112] In some possible implementations, user equipment 102 may still monitor at least one of the SSB, the first CSS, and the PDSCH scheduled by the DCI in the first CSS during the first time period.

[0113] In some possible implementations, user equipment 102 can learn the time domain interval of the first time period, such as the start and end time of the first time period, based on the configuration information of DTX or the dynamic indication of network equipment 101.

[0114] In one example, the configuration information for DTX may include the DTX period, the duration of the first time period, the initial bias value, etc.

[0115] In some possible implementations, network device 101 may pre-send DTX configuration information via higher-layer signaling. For example, network device 101 may semi-statically configure DTX configuration information via RRC signaling or Media Access Control Element (MAC CE) signaling.

[0116] In some possible implementations, network device 101 may be information that dynamically indicates the DTX status via DCI, such as the start and end times of a first time period.

[0117] In this embodiment of the disclosure, during the first period when the network device 101 is in DTX state, the transmission of downlink information can be reduced to achieve energy saving; in addition, during the first period, the network device 101 can still transmit the first type of downlink information, and the user equipment 102 can still listen to the first type of downlink information so as to receive the first type of downlink information in a timely manner and achieve timely communication.

[0118] This disclosure provides a method for sending and receiving downlink information. (Refer to...) Figure 3 , Figure 3 This is a method for sending and receiving downlink information according to an exemplary embodiment. For example... Figure 3 As shown, the method includes steps S301 to S302, specifically:

[0119] In step S301, during the first time period when the first carrier is in DTX state, network device 101 sends first type downlink information to user equipment 102 on the first carrier.

[0120] In some possible implementations, the first type of downlink information transmitted by network device 101 on the first carrier may include at least one of SSB, first CSS, and PDSCH scheduled by DCI in the first CSS.

[0121] The first CSS is the CSS that the user device 102 needs to listen to even when it is in the RRC idle state or inactive state. The first CSS can include various types, as described in the foregoing embodiments, and will not be repeated here.

[0122] In some possible implementations, the configuration information of the corresponding DTX may differ for different carriers. For example, at least one parameter of the DTX period, the duration of the effective period, or the starting offset value may be different between different carriers.

[0123] In some possible implementations, the first type of downlink information is downlink information that is scheduled before the start time of the first time period and whose transmission time is within the first time period.

[0124] In one example, reference Figure 4 As shown, the first DTX time period corresponding to the first carrier is time t1 to t2, that is, the start time of the first time period is t1 and the end time is t2.

[0125] In this example, network device 101 can still transmit downlink information scheduled before t1 and transmitted between t1 and t2 on the first carrier.

[0126] In some possible implementations, the first type of downlink information is one of the following:

[0127] Physical Downlink Shared Channel (PDSCH);

[0128] Aperiodic Channel State Information-Reference Signal (CSI-RS).

[0129] In one example, reference Figure 4 As shown, the downlink scheduling DCI of network device 101 schedules one or more PDSCHs before t1, and some or all of the transmission times of the one or more PDSCHs are located between t1 and t2.

[0130] In this example, during the first time period t1 to t2, network device 101 can still transmit part or all of the PDSCH on the first carrier.

[0131] In one example, reference Figure 4 As shown, the downlink scheduling DCI of network device 101 scheduled an aperiodic CSI-RS before t1, and the transmission time of the CSI-RS was between t1 and t2.

[0132] In this example, during the first time period t1 to t2, network device 101 can still transmit the CSI-RS on the first carrier.

[0133] In step S302, when the network device 101 is in the first time period of the DTX state, the user equipment 102 listens for and receives the first type of downlink information sent by the network device on the first carrier.

[0134] In some possible implementations, user equipment 102 can know the time domain interval of any carrier, such as the first carrier, corresponding to the first time period, such as the start and end time of the first time period, based on the configuration information of DTX or the dynamic indication of network equipment 101.

[0135] In some possible implementations, network device 101 may issue configuration information for DTX applicable to any carrier. Alternatively, the DTX configuration information issued by network device 101 may include configuration information corresponding to multiple carriers respectively, such as configuration information for DTX corresponding to the first carrier.

[0136] The configuration information of the DTX corresponding to the first carrier may include: the period of the DTX corresponding to the first carrier, the duration of the effective period, the initial offset value, etc.

[0137] In some possible implementations, user equipment 102 may still listen on the first carrier during the first time period to at least one of the SSB, the first CSS, and the PDSCH scheduled by the DCI in the first CSS.

[0138] In some possible implementations, user equipment 102 may still listen on the first carrier during the first time period: PDSCH that was scheduled before the start time of the first time period and whose transmission time is within the first time period.

[0139] In some possible implementations, user equipment 102 may still listen on the first carrier during the first time period: a non-periodic CSI-RS that is scheduled before the start time of the first time period and whose transmission time is within the first time period.

[0140] In this embodiment of the present disclosure, when the network device 101 is in the first time period of the first carrier in the DTX state, the network device 101 can still send the first type of downlink information on the first carrier. The user equipment 102 listens for and receives the first type of downlink information so that necessary communication processes can be performed in a timely manner while saving energy.

[0141] This disclosure provides a method for sending and receiving downlink information. (Refer to...) Figure 5 , Figure 5 This is a method for sending and receiving downlink information according to an exemplary embodiment. For example... Figure 5 As shown, the method includes steps S501 to S504, specifically:

[0142] In step S501, during the first period of discontinuous transmission of DTX status, network device 101 sends first type of downlink information to user equipment 102; wherein, the first period is the period during which at least some downlink information does not need to be transmitted under DTX status.

[0143] In some possible implementations, network device 101 transmits at least one of the following during the first time period: SSB, first CSS, and PDSCH scheduled by DCI in the first CSS. This implementation can be applied to any carrier.

[0144] In some possible implementations, if network device 101 is in DTX state on the first carrier, network device 101 still transmits first type downlink information on the first carrier during the first period of the DTX state.

[0145] In one example, the first type of downlink information transmitted by network device 101 on the first carrier includes at least one of SSB, first CSS, and PDSCH scheduled by DCI in the first CSS.

[0146] In one example, the first type of downlink information transmitted by network device 101 on the first carrier includes: PDSCH that is scheduled before the start time of the first time period and is transmitted within the first time period.

[0147] In one example, the first type of downlink information transmitted by network device 101 on the first carrier includes: aperiodic CSI-RS scheduled before the start time of the first time period and transmitted during the first time period.

[0148] In step S502, during the first time period, user equipment 102 listens for and receives the first type of downlink information sent by network device 101.

[0149] In some possible implementations, user equipment 102 learns the configuration information of DTX based on the signaling of network equipment 101, thereby learning the time domain interval of the first time period.

[0150] In some possible implementations, network device 101 may issue configuration information for DTX applicable to any carrier. Alternatively, the DTX configuration information issued by network device 101 may include configuration information corresponding to multiple carriers respectively, such as configuration information for DTX corresponding to the first carrier.

[0151] In step S503, during the first time period when the first carrier is in DTX state, network device 101 stops transmitting second type downlink information on the first carrier.

[0152] The order of steps S501 and S503 is for illustrative purposes only, and there is no strict order requirement between them. The execution order depends on whether the downlink information is of the first type or the second type.

[0153] In some possible implementations, the second type of downlink information is: downlink information for semi-persistent transmission activated before the start time of the first time period.

[0154] The configuration information corresponding to the downlink information of semi-persistent transmission can be activated and deactivated through the DCI or MAC CE signaling of network device 101.

[0155] In this embodiment, reference Figure 4As shown, during the first time period t1 to t2, for example, starting from the beginning time t1 of the first time period, the downlink information of the semi-persistent transmission that has been activated is considered deactivated. Therefore, network device 101 stops transmitting the downlink information of the semi-persistent transmission on the first carrier during the first time period.

[0156] In some possible implementations, the second type of downlink information is one of the following:

[0157] PDSCH of Semi-Persistent Scheduling (SPS);

[0158] Semi-persistent CSI-RS.

[0159] In one example, reference Figure 4 As shown, the SPS PDSCH configuration is activated before the start time t1 of the first time period. When the first carrier is in the DTX state during the first time period, network device 101 may deactivate the SPS PDSCH configuration starting from t1, and network device 101 will stop transmitting semi-persistent PDSCH on the first carrier.

[0160] In one example, reference Figure 4 As shown, the semi-persistent CSI-RS configuration is activated before the start time t1 of the first time period. When the first carrier is in the DTX state during the first time period, network device 101 may deactivate the semi-persistent CSI-RS configuration starting from t1, and network device 101 may stop transmitting semi-persistent CSI-RS on the first carrier.

[0161] In some possible implementations, the downlink information of the semi-persistent transmission is considered to be the deactivation time, or it can be the time when the user equipment 102 receives the indication information. This indication information is used to indicate that the network device 101 will enter the DTX state.

[0162] In one example, before step S503 as before step S501, the method further includes step S500, specifically: in step S500, network device 101 sends indication information to user equipment 102, the indication information being used to indicate that network device 101 will enter DTX state.

[0163] In this example, the indication information serves as a dynamic DTX instruction, notifying user equipment 102 that network device 101 will enter the DTX state. Upon receiving the indication information, user equipment 102 assumes that network device 101 is in the DTX state and can consider that the semi-persistent downlink information has been deactivated.

[0164] In this example, network device 101 can send the indication information via RRC signaling, MAC CE, or DCI.

[0165] In some possible implementations, the downlink information of semi-persistent transmission is considered to be the time of deactivation, or it can be the time when the indication information takes effect after the user equipment 102 receives the indication information.

[0166] In one example, after a set duration following the receipt of the instruction information, the instruction information becomes effective. After the user equipment 102 determines the set duration after receiving the instruction information, the downlink information of the semi-persistent transmission is deactivated.

[0167] For example, if network device 101 sends the indication information by sending a DCI, the indication information may take effect in the next time slot received by user equipment 102. Assuming user equipment 102 receives the DCI in time slot n, the indication information in that DCI takes effect in slot (n+1). Therefore, user equipment 102 determines that the downlink information in the semi-persistent transmission in slot (n+1) is deactivated.

[0168] For example, if network device 101 sends the indication information by sending a MAC CE, the indication information may take effect after k timeslots received by user equipment 102. Assuming user equipment 102 receives the DCI in time slot n, the indication information in that DCI takes effect in slot (n+k). Therefore, user equipment 102 determines that the downlink information in the semi-persistent transmission in slot (n+k) is deactivated.

[0169] In some possible implementations, the second type of downlink information is at least one of the following:

[0170] Periodic CSI-RS;

[0171] A dedicated DCI sent to user equipment 102;

[0172] DCI sent within the User Equipment Specific Search Space (USS).

[0173] In one example, reference Figure 4 As shown, network device 101 can stop transmitting periodic CSI-RS on the first carrier starting at the beginning time t1 of the first time period.

[0174] In one example, for periodic CSI-RS, when the transmission time of the first carrier is within a first time period, network device 101 may stop transmitting periodic CSI-RS on the first carrier. Outside the first time period, network device 101 may transmit periodic CSI-RS normally according to the period of periodic CSI-RS.

[0175] In one example, the second type of downlink information includes: dedicated DCIs sent to user equipment 102, and / or DCIs sent within the user equipment-specific search space (USS).

[0176] The dedicated DCI (UE-dedicated DCI or UE-specific DCI) sent by network device 101 to user equipment 102 is a DCI that is only received by user equipment 102, and other user equipment will not receive this dedicated DCI. The aforementioned dedicated DCI can be transmitted in either the Common Search Space (CSS) or the User Search Space (USS).

[0177] It is worth noting that only the UE's dedicated DCI can be transmitted in the USS.

[0178] In step S504, during the first time period when the network device 101 is in the DTX state on the first carrier, the user equipment 102 does not listen to the second type of downlink information on the first carrier.

[0179] In some possible implementations, during the first time period corresponding to the first carrier, the user equipment 102 does not listen to downlink information of semi-persistent transmissions activated before the start time of the first time period on the first carrier.

[0180] In some possible implementations, corresponding to step S500, the method further includes step S500', specifically:

[0181] In step S500', after receiving the indication information sent by the network device 101, the user equipment 102 determines that the second type of downlink information has been deactivated. The indication information is used to indicate that the network device 101 will enter the DTX state.

[0182] In this embodiment, when the user equipment 102 receives the indication information, it considers that the downlink information of the semi-persistent transmission activated before the start time of the first time period has been deactivated, that is, it no longer needs to listen to the downlink information of the semi-persistent transmission.

[0183] In one example, the user equipment 102 may receive the indication information before the start time of the first time period.

[0184] For example, for an SPS PDSCH that was activated before the start time of the first time period, user equipment 102 assumes that the SPS PDSCH has been deactivated after receiving the indication information. Therefore, in the first time period corresponding to the first carrier, user equipment 102 does not listen to the SPS PDSCH on the first carrier.

[0185] For example, for a semi-persistent CSI-RS that is activated before the start time of the first time period, user equipment 102 considers the semi-persistent CSI-RS to be deactivated after receiving the indication information. Therefore, in the first time period corresponding to the first carrier, user equipment 102 does not listen to the semi-persistent CSI-RS on the first carrier.

[0186] In some possible implementations, during the first time period corresponding to the first carrier, the user equipment 102 does not listen to the periodic CSI-RS on the first carrier.

[0187] In this embodiment of the disclosure, when network device 101 is in DTX state, network device 101 can maintain the transmission of first type downlink information, and user equipment 102 correspondingly maintains the listening and receiving of the first type downlink information to maintain necessary communication. Furthermore, network device 101 can stop transmitting second type downlink information, and user equipment 102 correspondingly does not listen to the second type downlink information to further reduce unnecessary downlink information transmission and achieve energy saving for both network device 101 and user equipment 102.

[0188] Based on the same concept as the above method embodiments, this disclosure also provides a network device 101 for performing the steps provided by the network device 101 in the above embodiments.

[0189] In one possible implementation, such as Figure 6 The apparatus 600 shown can serve as the network device 101 involved in the above method embodiment, and perform the steps executed by the network device 101 in the above method embodiment.

[0190] The device 600 includes a transceiver module 601, which can be used to support the communication device in communication.

[0191] The transceiver module 601 is configured to send a first type of downlink information to the user equipment during a first period of discontinuous transmission of DTX status; wherein the first period is a period during which at least some downlink information does not need to be transmitted under the DTX status.

[0192] Based on the same concept as the above method embodiments, this disclosure also provides a user equipment 102 for performing the steps performed by the user equipment 102 provided in the above embodiments.

[0193] In one possible implementation, such as Figure 7 The device 700 shown can serve as the user equipment 102 involved in the above method embodiment and perform the steps executed by the user equipment 102 in the above method embodiment.

[0194] The device 700 includes a transceiver module 701, which can be used to support the communication device in communication.

[0195] The transceiver module 701 is configured to listen for and receive a first type of downlink information sent by the network device during a first period when the network device is in DTX state, wherein the first period is a period during which at least some downlink information does not need to be sent in the DTX state.

[0196] This disclosure also provides a communication device, including a processor and a memory, wherein...

[0197] Memory is used to store computer programs;

[0198] The processor is used to execute the computer program to implement the method performed by the network device 101.

[0199] This disclosure also provides a computer-readable storage medium storing instructions that, when invoked and executed on a computer, cause the computer to perform the method executed by the network device 101.

[0200] This disclosure also provides a communication device, including a processor and a memory, wherein...

[0201] The memory is used to store computer programs;

[0202] The processor is used to execute the computer program to implement the method performed by the user equipment 102.

[0203] This disclosure also provides a computer-readable storage medium storing instructions that, when invoked and executed on a computer, cause the computer to perform the method executed by the user equipment 102.

[0204] Other embodiments of the present disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the embodiments of the present disclosure that follow the general principles of the embodiments of the present disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and embodiments are to be considered exemplary only, and the true scope and spirit of the embodiments of the present disclosure are indicated by the following claims.

[0205] It should be understood that the embodiments disclosed herein are not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from their scope. The scope of the embodiments disclosed herein is limited only by the appended claims.

[0206] Industrial applicability

[0207] In the method disclosed herein, during the first period when the network device is in DTX state, the transmission of downlink information can be reduced to achieve energy saving; in addition, the network device can still transmit first type downlink information during the first period to ensure timely communication.

Claims

1. A method for sending downlink information, performed by a network device, the method comprising: During the first period of discontinuous transmission of DTX status, a first type of downlink information is sent to the user equipment; wherein, the first period is the period during which at least some downlink information does not need to be transmitted under the DTX status; During the first time period when the first carrier is in the DTX state, the transmission of the second type of downlink information on the first carrier is stopped; The second type of downlink information is: downlink information of semi-persistent transmission activated before the start time of the first time period. The second type of downlink information is one of the following: semi-persistent scheduling of PDSCH; semi-persistent CSI-RS; and / or, the second type of downlink information is at least one of the following: periodic CSI-RS; dedicated DCI sent to the user equipment; DCI sent within the user equipment specific search space (USS).

2. The method of claim 1, wherein, The step of sending the first type of downlink information to the user equipment during the first period of discontinuous DTX state transmission includes: During the first time period when the first carrier is in the DTX state, the first type of downlink information is transmitted to the user equipment on the first carrier.

3. The method as described in claim 2, wherein, The first type of downlink information is downlink information that is scheduled before the start time of the first time period and whose transmission time is within the first time period.

4. The method of claim 3, wherein, The first type of downlink information is one of the following: Physical Downlink Shared Channel (PDSCH); Aperiodic Channel State Information Reference Signal (CSI-RS).

5. The method as described in claim 1 or 2, wherein, The first type of downlink information includes at least one of the following: Synchronization Signal Block (SSB); The Physical Downlink Control Channel (PDCCH) is transmitted in the First Common Search Space (CSS). The PDSCH is scheduled by the downlink control information DCI in the first CSS.

6. The method of claim 1, wherein, The method further includes: Send an indication message to the user equipment, the indication message being used to indicate that the network device will enter the DTX state.

7. A method for receiving downlink information, performed by a user equipment, the method comprising: During the first period when the network device is in DTX state, listen to and receive the first type of downlink information sent by the network device, wherein the first period is a period in which at least some downlink information does not need to be sent in the DTX state; During the first time period when the network device is in the DTX state on the first carrier, the user equipment does not listen for the second type of downlink information on the first carrier; The second type of downlink information is: downlink information of semi-persistent transmission activated before the start time of the first time period; the second type of downlink information is one of the following: semi-persistent scheduling of PDSCH; semi-persistent CSI-RS; and / or, the second type of downlink information is at least one of the following: periodic CSI-RS; dedicated DCI of the user equipment; DCI transmitted within the user equipment specific search space (USS).

8. The method of claim 7, wherein, The first time period during which the network device is in DTX state, listening to and receiving the first type of downlink information includes: When the first carrier is in the first time period of the DTX state, the network device listens for and receives the first type of downlink information sent by the network device on the first carrier.

9. The method of claim 8, wherein, The first type of downlink information is downlink information that is scheduled before the start time of the first time period and whose transmission time is within the first time period.

10. The method of claim 9, wherein, The first type of downlink information is one of the following: PDSCH; Aperiodic CSI-RS.

11. The method of claim 7 or 8, wherein, The first type of downlink information includes at least one of the following: SSB; In the first CSS transmission of PDCCH; The PDSCH scheduled by DCI in the first CSS.

12. The method of claim 7 or 8, wherein, The method further includes: After receiving the indication information sent by the network device, it is determined that the second type of downlink information has been deactivated. The indication information is used to indicate that the network device will enter the DTX state.

13. A network device, wherein, include: The transceiver module is used to send a first type of downlink information to the user equipment during a first period of discontinuous transmission of DTX status; wherein, the first period is a period during which at least some downlink information does not need to be transmitted under the DTX status; The transceiver module is further configured to stop transmitting second type downlink information on the first carrier during the first time period when the first carrier is in the DTX state; The second type of downlink information is: downlink information of semi-persistent transmission activated before the start time of the first time period. The second type of downlink information is one of the following: semi-persistent scheduling of PDSCH; semi-persistent CSI-RS; and / or, the second type of downlink information is at least one of the following: periodic CSI-RS; dedicated DCI sent to the user equipment; DCI sent within the user equipment specific search space (USS).

14. A user equipment, wherein, include: The transceiver module is used to listen to and receive the first type of downlink information sent by the network device during the first period when the network device is in DTX state, wherein the first period is the period during which at least some downlink information does not need to be sent in the DTX state; The transceiver module is further configured to ensure that, during the first time period when the network device is in the DTX state on the first carrier, the user equipment does not listen to the second type of downlink information on the first carrier; The second type of downlink information is: downlink information of semi-persistent transmission activated before the start time of the first time period; the second type of downlink information is one of the following: semi-persistent scheduling of PDSCH; semi-persistent CSI-RS; and / or, the second type of downlink information is at least one of the following: periodic CSI-RS; dedicated DCI of the user equipment; DCI transmitted within the user equipment specific search space (USS).

15. A communication device, comprising a processor and a memory, wherein, The memory is used to store computer programs; The processor is configured to execute the computer program to implement the method as described in any one of claims 1-6.

16. A communication device, comprising a processor and a memory, wherein, The memory is used to store computer programs; The processor is configured to execute the computer program to implement the method as described in any one of claims 7-12.

17. A computer-readable storage medium storing instructions that, when invoked and executed on a computer, cause the computer to perform the method as described in any one of claims 1-6.

18. A computer-readable storage medium storing instructions that, when invoked and executed on a computer, cause the computer to perform the method as described in any one of claims 7-12.

19. A communication system comprising network equipment and user equipment, wherein, The network device is configured to perform the method as described in any one of claims 1-6; The user equipment is used to perform the method as described in any one of claims 7-12.

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