Wireless communication method and related device

Abstract

The method comprises the following steps: a network device configures a plurality of non-continuous spectrums with different subcarrier spacings as a virtual bandwidth V-BW, and divides the V-BW into a plurality of virtual bandwidth parts V-BWP; the network device sends configuration information of the V-BW and configuration information of the plurality of V-BWP to a terminal through a first configuration message; the network device sends configuration information of a downlink V-BWP configured for the terminal and PDSCH cross-slot scheduling configuration information to the terminal through a second configuration message; the network device sends a PDCCH to the terminal according to resource configuration information related to the PDCCH in the downlink V-BWP, wherein downlink control information DCI in the PDCCH comprises configuration information of an activated V-BWP in the downlink V-BWP and PDSCH cross-slot scheduling information, and the PDSCH cross-slot scheduling information is generated based on the PDSCH cross-slot scheduling configuration information; and the network device sends a PDSCH to the terminal according to resource configuration information related to the PDSCH in the downlink V-BWP, the PDSCH cross-slot scheduling configuration information and the PDSCH cross-slot scheduling information.

Description

Technical Field

[0001] This disclosure relates to the field of wireless communication technology, and more specifically, to a wireless communication method, network device, terminal computer-readable storage medium, and computer program product. Background Technology

[0002] 5G (5th Generation, the fifth-generation mobile communication system), as the main technology of the next-generation wireless network, not only needs to support greater system capacity and higher data rates, but also needs to ensure higher energy efficiency. NR (New Radio), in order to support diverse application scenarios and services, as well as a larger candidate spectrum range (within 52.6 GHz), a more flexible parameter set, greater bandwidth, lower latency, and more antennas, presents new challenges to terminal power consumption. Summary of the Invention

[0003] This disclosure provides a wireless communication method, network device, terminal computer-readable storage medium, and computer program product that can increase the terminal's speed with lower power consumption by improving the flexibility of spectrum resource scheduling.

[0004] This disclosure provides a wireless communication method, the method comprising: a network device configuring multiple segments of discontinuous spectrum with different subcarrier spacings as virtual bandwidths (V-BWs), and dividing the V-BWs into multiple virtual bandwidth portions (V-BWPs), wherein at least one V-BWP exists among the multiple V-BWPs, and the virtual physical resource blocks (V-PRBs) in the at least one V-BWP have different subcarrier spacings; the network device sending configuration information of the V-BWs and configuration information of the multiple V-BWPs to a terminal via a first configuration message; the network device sending configuration information of downlink V-BWPs configured for the terminal and PDSCH cross-timeslot scheduling configuration information to the terminal via a second configuration message, wherein the multiple V-BWPs include the downlink V-BWPs, and the configuration information of the downlink V-BWPs includes downlink V-BWP common parameters, the downlink V-BWPs... The network device sends a PDCCH to the terminal based on the resource configuration information related to the downlink V-BWP and the PDSCH. The downlink control information (DCI) in the PDCCH includes the configuration information for activating the downlink V-BWP and PDSCH cross-timeslot scheduling information, which is generated based on the PDSCH cross-timeslot scheduling configuration information. The network device then sends the PDSCH to the terminal based on the downlink V-BWP common parameters, the resource configuration information related to the downlink V-BWP and the PDSCH, the PDSCH cross-timeslot scheduling configuration information, and the PDSCH cross-timeslot scheduling information. The method provided in this embodiment can be executed by a network device or by a chip configured in the network device; this disclosure does not limit the execution of this method.

[0005] This disclosure provides a wireless communication method, the method comprising: a terminal receiving a first configuration message sent by a network device, the first configuration message including configuration information of a Virtual Bandwidth (V-BW) and configuration information of multiple Virtual Bandwidth Parts (V-BWPs), wherein the V-BW includes multiple segments of discontinuous spectrum with different subcarrier spacings, the V-BW includes multiple V-BWPs, at least one of the multiple V-BWPs is present, and the Virtual Physical Resource Block (V-PRB) in the at least one V-BWP has different subcarrier spacings; the terminal receiving a second configuration message sent by the network device, the second configuration message being used to configure downlink V-BWP configuration information and PDSCH cross-slot scheduling configuration information for the terminal, wherein the multiple V-BWPs include the downlink V-BWP, and the configuration information of the downlink V-BWP includes downlink V-BWP common parameters, the downlink V-BWP and the transmission physical downlink control channel. The terminal receives PDCCH from the network device based on the resource configuration information related to the downlink V-BWP and the transmission physical downlink shared channel (PDSCH). The downlink control information (DCI) in the PDCCH includes the configuration information for activating the downlink V-BWP and PDSCH cross-timeslot scheduling information, which is generated based on the PDSCH cross-timeslot scheduling configuration information. The terminal receives PDSCH from the network device based on the downlink V-BWP common parameters, the resource configuration information related to the downlink V-BWP and the transmission physical downlink shared channel (PDSCH), the PDSCH cross-timeslot scheduling configuration information, and the PDSCH cross-timeslot scheduling information, and enters sleep mode in the intermediate time slot between receiving the PDCCH and the PDSCH. The method provided in this embodiment can be executed by a terminal or by a chip configured in the terminal; this disclosure does not limit this execution.

[0006] This disclosure provides a network device, including: a first processing unit, configured to configure multiple segments of non-contiguous spectrum with different subcarrier spacings as virtual bandwidths (V-BWs), and to divide the V-BWs into multiple virtual bandwidth portions (V-BWPs), wherein at least one V-BWP exists among the multiple V-BWPs, and the virtual physical resource blocks (V-PRBs) in the at least one V-BWP have different subcarrier spacings; a first communication unit, configured to send configuration information of the V-BWs and configuration information of the multiple V-BWPs to a terminal via a first configuration message; the first communication unit is further configured to send configuration information of downlink V-BWPs configured for the terminal and PDSCH cross-timeslot scheduling configuration information to the terminal via a second configuration message, wherein the multiple V-BWPs include the downlink V-BWPs, and the configuration information of the downlink V-BWPs includes downlink V-BWP common parameters, and the downlink V-BWPs and transmission... The first communication unit is configured to send a PDCCH to the terminal based on the resource configuration information related to the downlink V-BWP and the transmission physical downlink shared channel PDSCH. The downlink control information (DCI) in the PDCCH includes the configuration information for activating the downlink V-BWP and PDSCH cross-timeslot scheduling information, which is generated based on the PDSCH cross-timeslot scheduling configuration information. The first communication unit is also configured to send a PDSCH to the terminal based on the downlink V-BWP common parameters, the resource configuration information related to the downlink V-BWP and the transmission physical downlink shared channel PDSCH, the PDSCH cross-timeslot scheduling configuration information, and the PDSCH cross-timeslot scheduling information. The first processing unit and the first communication unit included in this network device can be implemented in software and / or hardware.

[0007] This disclosure provides a terminal, including: a second communication unit, configured to receive a first configuration message sent by a network device, the first configuration message including configuration information of a Virtual Bandwidth (V-BW) and configuration information of multiple Virtual Bandwidth Parts (V-BWPs), wherein the V-BW includes multiple segments of discontinuous spectrum with different subcarrier spacings, the V-BW includes multiple V-BWPs, at least one of the multiple V-BWPs exists, and the Virtual Physical Resource Blocks (V-PRBs) in the at least one V-BWP have different subcarrier spacings; the second communication unit is further configured to receive a second configuration message sent by the network device, the second configuration message being configured for downlink V-BWP configuration information and PDSCH cross-timeslot scheduling configuration information for the terminal, wherein the downlink V-BWP is included among the multiple V-BWPs, and the configuration information of the downlink V-BWP includes downlink V-BWP common parameters, the downlink V-BWP and the Transmission Physical Downlink Control Channel (PDCC). The second communication unit is further configured to receive PDCCH from the network device based on the resource configuration information related to the downlink V-BWP and the transmission physical downlink shared channel (PDCCH). The downlink control information (DCI) in the PDCCH includes the configuration information for activating the downlink V-BWP and PDSCH cross-timeslot scheduling information, which is generated based on the PDSCH cross-timeslot scheduling configuration information. The second communication unit is also configured to receive PDSCH from the network device based on the downlink V-BWP common parameters, the resource configuration information related to the downlink V-BWP and the transmission physical downlink shared channel (PDSCH), the PDSCH cross-timeslot scheduling configuration information, and the PDSCH cross-timeslot scheduling information, and enter a sleep mode during the intermediate time slot between receiving the PDCCH and the PDSCH. The second communication unit included in this terminal can be implemented through software and / or hardware.

[0008] This disclosure provides a terminal including at least one processor and a communication interface. The communication interface is used for the terminal to interact with other communication devices, and when program instructions are executed in the at least one processor, the method in any of the possible implementations described above is implemented.

[0009] Optionally, the terminal may also include a memory. The memory is used to store programs and data.

[0010] This disclosure provides a network device including at least one processor and a communication interface. The communication interface is used for the network device to interact with other communication devices, and when program instructions are executed in the at least one processor, it implements the method in any of the possible implementations described above.

[0011] Optionally, the network device may also include a memory. The memory is used to store programs and data.

[0012] Optionally, the network device includes a base station.

[0013] This disclosure provides a computer-readable storage medium storing a computer program for execution by a communication device, wherein the program, when executed by a processor, implements the method in any of the possible implementations described above.

[0014] For example, the computer-readable storage medium may store a computer program for execution by a terminal, which, when executed by a processor, implements instructions for the method described in the above embodiments.

[0015] For example, the computer-readable storage medium may store a computer program for execution by a network device, which, when executed by a processor, implements instructions for the method described by the network device as described in the above embodiments.

[0016] This disclosure provides a computer program product containing instructions. When the computer program product is run on a communication device, it causes the communication device to execute the instructions of the methods described above or any possible implementation of the methods described above.

[0017] For example, when the computer program product is executed on a terminal, it causes the terminal to execute instructions of the method in any of the possible implementations of the above embodiments.

[0018] This disclosure provides a computer program product containing instructions. When the computer program product is run on a network device, it causes the network device to execute the instructions of the methods described above or any possible implementation of the methods described above.

[0019] For example, when the computer program product is executed on a base station, it causes the base station to execute instructions for the method in any of the possible implementations of the above embodiments.

[0020] This disclosure provides a system chip including an input / output interface and at least one processor, which is used to call instructions in memory to perform operations of the methods in any of the possible implementations of the above-described parties.

[0021] Optionally, the system chip may also include at least one memory and a bus, wherein the at least one memory is used to store instructions executed by the processor.

[0022] This disclosure provides a wireless communication system, including the aforementioned terminal and network device. Attached Figure Description

[0023] Figure 1 The illustration shows a schematic diagram of an application scenario of a wireless communication method according to an embodiment of the present disclosure.

[0024] Figure 2 A flowchart illustrating a wireless communication method according to an embodiment of the present disclosure is shown schematically.

[0025] Figure 3 A schematic diagram illustrating NR supporting multiple subcarrier spacings according to an embodiment of the present disclosure is shown.

[0026] Figure 4 The illustration shows a schematic diagram of scheduling a large subcarrier spacing PDSCH (Physical Downlink Shared Channel) with a small subcarrier spacing PDCCH (Physical Downlink Control Channel) according to an embodiment of the present disclosure.

[0027] Figure 5 A schematic diagram of a virtual bandwidth (V-BW) according to an embodiment of the present disclosure is shown.

[0028] Figure 6 A schematic diagram of a V-PRB (Virtual Physical Resource Block) constituting a V-BW according to an embodiment of the present disclosure is shown.

[0029] Figure 7 A schematic diagram of a V-BWP configuration according to an embodiment of the present disclosure is shown.

[0030] Figure 8 A schematic diagram of a basic time-slot offset indicator according to an embodiment of the present disclosure is shown.

[0031] Figure 9 A schematic diagram of a PDSCH time-domain configuration according to an embodiment of the present disclosure is shown.

[0032] Figure 10 A schematic block diagram of a communication device according to an embodiment of the present disclosure is shown. Detailed Implementation

[0033] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be more thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art.

[0034] In this disclosure, unless otherwise stated, " / " means "or," for example, A / B can mean A or B. "And / or" in this document is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, and B alone. Furthermore, "at least one" means one or more, and "multiple" means two or more. The terms "first," "second," etc., do not limit the quantity or order of execution, and "first," "second," etc., do not necessarily imply differences.

[0035] First, some terms that may be involved in the embodiments of this disclosure will be explained.

[0036] 3GPP: 3rd Generation Partnership Project.

[0037] NR: An abbreviation for New Radio.

[0038] RRC: Radio Resource Control.

[0039] UMTS: Abbreviation for Universal Mobile Telecommunication System.

[0040] E-UTRAN: Evolved UMTS Terrestrial Radio Access Network.

[0041] eNB: an abbreviation for E-UTRAN NodeB, which is an E-UTRAN base station node.

[0042] PBCH: Abbreviation for Physical Broadcast Channel.

[0043] SSB: an abbreviation for Synchronization Signal and PBCH block.

[0044] DMRS: Demodulation Reference Signal.

[0045] CRS: The abbreviation for Cell Reference Signal.

[0046] NOMA is an abbreviation for Non-orthogonal Multiple-access.

[0047] OMA is an abbreviation for Orthogonal Multiple-access.

[0048] RE: Abbreviation for Resource Element.

[0049] PDSCH: Physical Downlink Shared Channel.

[0050] PDCCH: Physical Downlink Control Channel.

[0051] PUSCH: Abbreviation for Physical Uplink Shared Channel.

[0052] PUCCH: Physical Uplink Control Channel.

[0053] DCI: An abbreviation for Downlink Control Information.

[0054] LTE: Long Term Evolution.

[0055] PRB: Abbreviation for Physical Resource Block.

[0056] V-PRB: Abbreviation for Virtual Physical Resource Block.

[0057] RBG: Abbreviation for Resource Block Groups.

[0058] RBG: Abbreviation for Virtual Resource Block Groups.

[0059] CSI is an abbreviation for Channel State Information, which includes information such as CQI (Channel Quality Indication), PMI (Precoding Matrix Indicator), and RI (Rank Indicator). It is used to inform the base station about the quality of the downlink channel to assist the base station in downlink scheduling. It includes multi-antenna and beamforming schemes.

[0060] CSI-RS: RS stands for reference signals.

[0061] OFDM is an abbreviation for Orthogonal Frequency Division Multiplexing.

[0062] BWP: Abbreviation for Bandwidth Part.

[0063] V-BW: Abbreviation for Virtual Bandwidth.

[0064] V-BWP: Abbreviation for Virtual Bandwidth Part.

[0065] The solutions provided in this disclosure can be widely applied to wireless communication systems to provide various types of communication content, such as voice, video, packet data, messaging, broadcasting, etc. These systems can support communication with multiple users by sharing available system resources (e.g., time, frequency, and power). Such multiple access systems include, for example, fourth-generation (4G) systems (e.g., Long Term Evolution (LTE) systems or improved LTE (LTE-A) systems) and fifth-generation (5G) systems (which may be referred to as New Radio (NR) systems). These systems can employ technologies such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), or Discrete Fourier Transform Extended OFDM, etc. A wireless multiple access communication system can include multiple base stations or network access nodes, each of which simultaneously supports communication with multiple communication devices (which may be referred to as User Equipment (UE) or User Terminal, or Terminal)).

[0066] Figure 1 The illustration shows a schematic diagram of an application scenario of a wireless communication method according to an embodiment of the present disclosure.

[0067] Figure 1 Examples of a wireless communication system 100 according to various aspects of this disclosure are shown. The wireless communication system 100 includes a base station 105, a user interface unit (UE) 115, and a core network 130. In some examples, the wireless communication system 100 may be an LTE network, an LTE-A network, or an NR network. In some cases, the wireless communication system 100 may support enhanced broadband communication, ultra-reliable (e.g., mission-critical) communication, low-latency communication, or communication with low-cost and low-complexity devices.

[0068] Base station 105 can wirelessly communicate with UE 115 via one or more base station antennas. Base station 105 described herein may include a base transceiver, wireless base station, access point, wireless transceiver, Node B, evolved Node B (eNB), next-generation Node B, or gigabit Node B (any of which may be referred to as gNB), home Node B, home evolved Node B, or some other suitable term. Wireless communication system 100 may include different types of base stations 105 (e.g., macro base stations or small cells). UE 115 described herein is capable of communicating with various types of base stations 105 and network devices (including macro eNBs, small cell eNBs, gNBs, relay base stations, etc.).

[0069] Each base station 105 may be associated with a specific geographic coverage area 110 in which communication with each UE 115 is supported. Each base station 105 may provide communication coverage to the corresponding geographic coverage area 110 via a communication link 125, and the communication link 125 between the base station 105 and the UE 115 may utilize one or more carriers. The communication link 125 shown in the wireless communication system 100 may include: an uplink transmission from the UE 115 to the base station 105, or a downlink transmission from the base station 105 to the UE 115. The downlink transmission may also be referred to as a forward link transmission, and the uplink transmission may also be referred to as a reverse link transmission.

[0070] Base station 105 can communicate with core network 130 and with each other. For example, base station 105 can interface with core network 130 via backhaul link 132. Base stations 105 can communicate with each other directly or indirectly on backhaul link 134.

[0071] Furthermore, the terminal involved in this disclosure refers to a device that provides voice and / or data connectivity to a user, such as a handheld device with wireless connectivity or other processing device connected to a wireless modem. The terminal can be a mobile terminal, such as a mobile phone (or "cellular" phone) and a computer with a mobile terminal, for example, a portable, pocket-sized, handheld, computer-embedded, or vehicle-mounted mobile device that exchanges voice and / or data with a wireless access network. The terminal can also be referred to as a Subscriber Unit, Subscriber Station, Mobile Station, Mobile Station, Remote Station, Access Point (AP), Remote Terminal, Access Terminal, User Terminal, User Agent, or UE, without limitation.

[0072] Figure 2 A flowchart illustrating a wireless communication method according to an embodiment of the present disclosure is shown schematically.

[0073] like Figure 2 As shown, the method provided in this disclosure embodiment may include the following steps.

[0074] In step S210, the network device configures multiple segments of discontinuous spectrum with different subcarrier spacings as virtual bandwidths V-BW, and divides the V-BW into multiple virtual bandwidth parts V-BWPs. Among the multiple V-BWPs, there is at least one V-BWP, and the virtual physical resource block V-PRB in the at least one V-BWP has a different subcarrier spacing.

[0075] In an exemplary embodiment, a network device may configure multiple segments of discontinuous spectrum with different subcarrier spacings as a virtual bandwidth (V-BW), which may include:

[0076] The network device will arrange the multiple non-continuous spectrum segments constituting V-BW in order of increasing subcarrier spacing.

[0077] The network device maps the V-BW to multiple Virtual Physical Resource Blocks (V-PRBs). If the subcarrier spacing of the V-PRB is 2 times the minimum subcarrier spacing... μ If the frequency domain positions are the same, then the time domain positions are placed in parallel by 2. μ There are V-PRBs, where μ is an integer greater than or equal to 0;

[0078] The network devices are numbered in ascending order from left to right in the time domain and from bottom to top in the frequency domain.

[0079] In step S220, the network device sends the configuration information of V-BW and the configuration information of multiple V-BWPs to the terminal through a first configuration message.

[0080] In an exemplary embodiment, the configuration information of the V-BW may include:

[0081] Identification of each spectrum segment;

[0082] Subcarrier spacing for each spectrum segment;

[0083] In an exemplary embodiment, the number of V-PRBs contained in each spectrum segment.

[0084] In an exemplary embodiment, the configuration information of multiple V-BWPs may include:

[0085] V-BWP logo;

[0086] V-BWP contains the V-PRB number.

[0087] In step S230, the network device sends the configuration information of the downlink V-BWP and the PDSCH cross-timeslot scheduling configuration information configured for the terminal to the terminal through a second configuration message. The downlink V-BWP is included among the multiple V-BWPs. The configuration information of the downlink V-BWP includes downlink V-BWP common parameters, resource configuration information of the downlink V-BWP related to the transmission physical downlink control channel PDCCH, and resource configuration information of the downlink V-BWP related to the transmission physical downlink shared channel PDSCH.

[0088] In an exemplary embodiment, the configuration information for the downlink V-BWP configured for the terminal may include:

[0089] The downlink V-BWP addition list is identified by the downlink V-BWPs configured on the terminal, and is an integer greater than 1 and less than N, where N represents the maximum number of downlink V-BWPs.

[0090] The first activated downlink V-BWP identifier corresponds to a V-BWP selected from a maximum of N downlink V-BWPs configured for the terminal;

[0091] The default downlink V-BWP identifier corresponds to one V-BWP selected from a maximum of N downlink V-BWPs configured for the terminal.

[0092] In an exemplary embodiment, the downlink V-BWP add list may include:

[0093] The terminal is configured with a maximum of N downlink V-BWP identifiers;

[0094] The downlink V-BWP common parameters of the cell where the terminal is located;

[0095] The terminal is configured with up to N downlink V-BWP-specific parameters.

[0096] In an exemplary embodiment, the downlink V-BWP common parameters may include:

[0097] The location and bandwidth of the V-BWP in the cell where the terminal is located, specifying the bandwidth and frequency domain location of the V-BWP, are represented as the index range of the V-PRB;

[0098] The subcarrier spacing of the V-BWP in the cell where the terminal is located is defined as the minimum subcarrier spacing of the V-BWP.

[0099] The cyclic prefix of the V-BWP in the cell where the terminal is located is used to indicate whether the V-BWP uses an extended prefix.

[0100] In an exemplary embodiment, the V-BWP dedicated parameters may include: a PDCCH dedicated configuration for up to N downlink V-BWPs configured for the terminal, which serves as resource configuration information related to the transmission of the physical downlink control channel (PDCCH) for the downlink V-BWPs.

[0101] The PDCCH-specific configuration for up to N downlink V-BWPs configured for the terminal may include:

[0102] A control resource set addition list is used to indicate the control resource sets configured for the terminal;

[0103] A control resource set release list is used to indicate the release of control resource sets configured for the terminal;

[0104] A search space addition list is provided to indicate the search space configured for the terminal.

[0105] A search space release list is used to indicate the deletion of configured search spaces for the terminal;

[0106] Control resource set.

[0107] In an exemplary embodiment, the control resource set may include:

[0108] Control resource set identifier;

[0109] The frequency domain resources of the control resource set;

[0110] The duration of the control resource set.

[0111] In an exemplary embodiment, the V-BWP specific parameters may include:

[0112] The terminal is configured with a maximum of N dedicated PDSCH configurations for downlink V-BWPs, which serve as resource configuration information related to the transmission of the physical downlink shared channel (PDSCH) for the downlink V-BWPs.

[0113] The PDSCH-specific configuration for up to N downlink V-BWPs configured for the terminal may include:

[0114] PDSCH frequency domain resource allocation types include resource allocation type 0 and resource allocation type 1;

[0115] PDSCH time-domain resource allocation list.

[0116] The time-domain resource allocation list for PDSCH may include:

[0117] The time slot offset between PDCCH and PDSCH;

[0118] PDSCH basic slot offset indicator;

[0119] PDSCH mapping type;

[0120] The starting symbol and length of PDSCH.

[0121] In an exemplary embodiment, the PDSCH cross-slot scheduling configuration information may include:

[0122] Minimum scheduling slot offset;

[0123] The offset within the basic time slot, which uses the time slot with the smallest subcarrier interval as the basic time slot, for a time slot of 2... μ The minimum subcarrier spacing corresponds to an offset value within the basic time slot ranging from 0 to (2). μ Integers between -1) and μ, where μ is an integer greater than 0.

[0124] In step S240, the network device sends a PDCCH to the terminal according to the resource configuration information related to the downlink V-BWP and the transmission PDCCH. The downlink control information (DCI) in the PDCCH includes the configuration information for activating the downlink V-BWP and the PDSCH cross-time slot scheduling information. The PDSCH cross-time slot scheduling information is generated based on the PDSCH cross-time slot scheduling configuration information.

[0125] In an exemplary embodiment, PDSCH cross-slot scheduling information includes:

[0126] Minimum scheduling slot offset indicator determined from the minimum scheduling slot offset;

[0127] The time slot offset between PDSCH and PDCCH, wherein the time slot offset is greater than or equal to the minimum scheduling time slot offset indicator;

[0128] Start and length indicators for PDSCH;

[0129] The basic time slot offset indicator for PDSCH.

[0130] In an exemplary embodiment, the configuration information for activating V-BWP may include:

[0131] Downlink resource allocation type 0;

[0132] Activated downlink V-BWP identifier;

[0133] Size N RGB A bitmap is used to indicate the allocation of Virtual Resource Block Groups (V-RBGs) within the active V-BWP bandwidth to the terminal, wherein the number of V-PRBs contained in each V-RBG is determined according to the size of the active V-BWP.

[0134] In step S250, the network device sends the PDSCH to the terminal based on the downlink V-BWP common parameters, the resource configuration information related to the downlink V-BWP and the transmission physical downlink shared channel (PDSCH), the PDSCH cross-timeslot scheduling configuration information, and the PDSCH cross-timeslot scheduling information.

[0135] Cross-slot scheduling can reduce terminal power consumption, and non-contiguous spectrum resource allocation can increase the flexibility of resource scheduling. However, in the current standard, considering the impact of signaling overhead and complexity, it is not possible to schedule a virtual bandwidth of related resources consisting of multiple non-contiguous spectrums with different subcarrier spacings for downlink data transmission through a single DCI. Therefore, it is not possible to further improve the downlink rate of the terminal with lower power consumption.

[0136] To improve the flexibility of spectrum resource scheduling and terminal speed, current standards and implementations still have at least the following problems:

[0137] - Unable to schedule a virtual bandwidth consisting of multiple non-contiguous spectrum segments: Considering the impact of signaling overhead and complexity, it is impossible to schedule a virtual bandwidth consisting of multiple non-contiguous spectrum segments through a single DCI, thus failing to improve the flexibility of spectrum resource scheduling, spectrum resource utilization, and terminal downlink rate.

[0138] - Unable to schedule a virtual bandwidth segment / virtual partial bandwidth consisting of multiple non-contiguous spectrum segments with different subcarrier spacings: The spectrum resource allocation method in the current standard cannot support allocating a virtual partial bandwidth to a terminal consisting of multiple non-contiguous spectrum segments with different subcarrier spacings. The base station cannot index and allocate this virtual partial bandwidth, thus failing to improve the terminal rate with a more flexible spectrum resource scheduling method.

[0139] -Unable to further improve the downlink rate of the terminal with lower terminal power consumption: According to the current standard, it is not possible to consider spanning multiple time slots of different lengths during cross-time slot scheduling. Therefore, when scheduling PUSCH resources with virtual partial bandwidth for the terminal, cross-time slot scheduling cannot be supported to achieve a high-energy-efficiency downlink rate improvement.

[0140] Based on the above analysis of needs and reasons, the current 3GPP LTE and NR protocols cannot meet the requirements and need to be enhanced in a new way to meet the needs of network deployment and optimization.

[0141] The following is combined Figures 3 to 9 The methods provided in the embodiments of this disclosure are illustrated by way of example, but this disclosure is not limited thereto.

[0142] (1) In order to save terminal power consumption, the following technologies are supported in this embodiment:

[0143] 1) Reduce unnecessary PDCCH eavesdropping behavior of the terminal by adopting Discontinuous Reception (DRX) technology.

[0144] 2) If the impact on system throughput and latency performance is not significant, avoiding unnecessary PDCCH monitoring can reduce the processing power consumption of PDCCH and achieve the effect of terminal energy saving.

[0145] This disclosure supports highly flexible time-domain scheduling. The time offset between the PDCCH and PDSCH can be flexibly adjusted as needed and indicated in the downlink control information (DCI). The PDSCH and PDCCH can be in the same time slot or in different time slots; the former is referred to as local time-slot scheduling, and the latter as cross-time-slot scheduling, such as... Figure 4 As shown.

[0146] 3) In the frequency domain, embodiments of this disclosure support V-BWP handover based on RRC signaling and dynamic signaling. Frequency domain adaptive energy saving includes terminal adaptive handover of V-BWP to match dynamic changes in services. After handover, the V-BWP uses on-demand reference signals to complete fast channel tracking and measurement, further reducing terminal power consumption.

[0147] 4) For multi-antenna terminals, the terminal's power consumption increases with the number of RF links, transceiver antennas, and panels. In situations with no data transmission, only small packet transmission, or favorable channel conditions, using fewer receiving antennas or RF links significantly reduces the terminal's power consumption. Energy-saving assessment results show that when the terminal adaptively adjusts from 4 receiving antennas to 2, it can achieve a power-saving gain of up to 30%, while the resulting increase in latency is approximately 4%. Therefore, appropriately reducing the number of receiving antennas is beneficial for terminal energy saving.

[0148] (2) Cross-carrier scheduling

[0149] This disclosure supports multiple subcarrier spacing types, each corresponding to a basic parameter. Subcarrier spacing can be 15kHz, 30kHz, 60kHz, 120kHz, 240kHz (for SSB only), etc. Figure 3 As shown, the time slot lengths corresponding to different subcarrier intervals are different. For example, the time slot length for 15kHz is 1ms, the time slot length for 30kHz is 0.5ms, the time slot length for 60kHz is 0.25ms, the time slot length for 120kHz is 0.125ms, and the time slot length for 240kHz is 0.0625ms.

[0150] For cross-carrier scheduling (CA), Release 15 supports the case where the subcarrier spacing of the scheduled carrier (e.g., the carrier used by PDSCH) and the scheduling carrier (e.g., the carrier used by PDCCH) is the same. The method provided in this disclosure further supports the case where the subcarrier spacing of the scheduled carrier and the scheduling carrier is different.

[0151] Regarding the PDSCH reception preparation time, considering that during cross-carrier downlink scheduling, the terminal device / terminal needs to process carrier resources of different subcarrier intervals, placing additional requirements on the behavior and capabilities of the terminal device, the protocol introduces a scheduling timing interval N (N is an integer greater than or equal to 1). The unit of the scheduling timing interval N is the number of symbols, calculated from the subcarrier interval of the PDCCH. For the specific definition of the scheduling timing interval, see 38.214.

[0152] Figure 4 The diagram shows a PDCCH with a small subcarrier spacing scheduling a PDSCH with a large subcarrier spacing. The subcarrier spacing of the PDCCH is 15kHz, and the subcarrier spacing of the PDSCH is 30kHz.

[0153] (3) Resource allocation

[0154] To receive PDSCH or transmit PUSCH, the UE typically first receives and decodes the PDCCH. The DCI carried by the PDCCH specifies how the PDSCH or PUSCH is transmitted over the air interface. The UE obtains the air interface resource allocation information for its scheduled PDSCH or PUSCH from the DCI. The DCI can contain both frequency domain and time domain resource allocation information. For frequency domain resource allocation, NR supports continuous and discontinuous allocation of resources in the frequency domain.

[0155] Type 0 is for non-contiguous frequency domain resource allocation, while Type 1 is for contiguous frequency domain resource allocation. In Type 0 frequency domain resource allocation, the DCI indicates the V-RBG allocated to the UEPDSCH through a bitmap of the frequency domain resource allocation information field. This reduces the number of bits required for the bitmap while ensuring sufficient allocation flexibility.

[0156] This position Figure 1 It contains N V-RBG bits, N V-RBG For integers greater than or equal to 1, each bit corresponds to a V-RBG, with the highest bit representing V-RBG number 0 (i.e., represented as V-RBG 0) and the lowest bit representing V-RBG number N. V-RBG -1 of V-RBG (i.e., represented as V-RBG N) RBG -1), and so on. If a V-RBG is assigned to the UE's PDSCH, the corresponding bit in the bitmap is 1; otherwise, the bit is 0. The UE can determine the frequency domain position of the V-PRB assigned to the UE's PDSCH in the V-BWP based on this bitmap.

[0157] According to TS 38.101-1, UE channel bandwidth refers to the number of single NR RF (Radio Frequency) carriers supported by the UE in the uplink (UL) and downlink (DL). It supports transmitting multiple carriers to the same UE or to different UEs within the BS (base station) channel bandwidth. From the UE's perspective, a UE can be configured with one or more V-BWP / carriers, each with its own UE channel bandwidth.

[0158] To address the high energy efficiency and high data rate requirements of 5G terminals, embodiments of this disclosure propose a method for improving downlink speeds with lower power consumption and signaling overhead. Through the scheme provided by embodiments of this disclosure, network devices, such as base stations, can schedule a virtual portion of a virtual bandwidth consisting of multiple discontinuous spectrum segments, where each discontinuous spectrum segment can employ a different subcarrier spacing.

[0159] To save signaling overhead, the frequency resource blocks (e.g., V-PRB) of the virtual bandwidth / virtual partial bandwidth can be uniformly numbered, and the downlink transport channel resources can be allocated to the terminal through the downlink control channel.

[0160] To reduce terminal power consumption, the base station supports cross-slot scheduling for the terminal. Considering that different subcarrier resources have different slot lengths, a basic intra-slot offset is introduced to achieve scheduling across slots of different lengths, thereby improving downlink speeds in a more energy-efficient manner. The method provided in this disclosure is based on existing protocol procedures and has the advantage of requiring minimal modification to existing protocols.

[0161] The method proposed in this disclosure is a high-efficiency downlink rate enhancement method. First, the base station configures corresponding time and frequency resources for the terminal according to the downlink traffic of the terminal. In order to improve the spectrum resource utilization and the downlink rate of the terminal, the frequency resources allocated to the terminal are virtual partial bandwidths composed of multiple non-contiguous spectra with different subcarrier spacings.

[0162] To reduce signaling overhead, the base station first sends the configuration information of virtual bandwidth and virtual partial bandwidth to the terminal via RRC signaling, and then sends the configuration information of the activated virtual partial bandwidth and the resource blocks allocated to downlink data transmission within the virtual partial bandwidth to the terminal via downlink control information (DCI).

[0163] Meanwhile, in order to save terminal power consumption, the base station configures cross-time slot scheduling for the terminal according to the downlink service requirements of the terminal. Considering that different subcarrier intervals correspond to different time slot lengths, it involves spanning multiple time slots of different lengths.

[0164] Specifically, the base station first sends the time slot scheduling configuration across multiple time slots of different lengths to the terminal via RRC signaling, and then sends the specific cross-time slot scheduling information to the terminal via the downlink control channel. After receiving the RRC signaling and downlink control signaling from the base station, the terminal transmits downlink data on specific time-frequency resources, and during the cross-time slot scheduling process, it maintains a sleep mode in the unscheduled time slots (referred to as intermediate time slots) to reduce power consumption, ultimately achieving a high-energy-efficiency downlink rate improvement.

[0165] The method provided in this disclosure may include the following steps.

[0166] Step 1: The base station configures the corresponding bandwidth for the terminal according to the downlink service requirements of the terminal. In order to improve the flexibility of resource scheduling and the utilization rate of spectrum resources, the bandwidth resources configured for the terminal can be composed of multiple non-contiguous spectrum resources, and the multiple non-contiguous spectrum resources can use different subcarrier intervals. In order to distinguish it from the bandwidth resources composed of continuous spectrum, the bandwidth composed of this combination is called virtual bandwidth (V-BW).

[0167] For ease of configuration, the multiple spectrum resources constituting V-BW are arranged in ascending order of subcarrier spacing, for example, as follows: Figure 5 As shown, the subcarrier spacing of each spectrum segment in V-BW increases sequentially from bottom to top: 15kHz, 30kHz, 60kHz, and 120kHz, etc.

[0168] However, this disclosure is not limited to this, for example, Figure 6 As shown, the subcarrier spacing of each spectrum segment in V-BW is 30kHz, 15kHz, etc., from bottom to top.

[0169] In this embodiment of the disclosure, V-BW consists of multiple non-contiguous spectrum resources; the subcarrier spacing of each spectrum resource is independent of each other, that is, it is not limited to using all the same or all different spectrums, they can be partially the same, partially different, or all the same or all different. In the following example, the example is that the subcarrier spacing of each spectrum is different, that is, each spectrum may use different subcarrier spacings, but this disclosure is not limited to this.

[0170] Step 2: To facilitate resource configuration for the terminal, the base station maps the V-BW into multiple Virtual Physical Resource Blocks (V-PRBs). Specifically, each V-PRB has a frequency domain length of 12 subcarriers (with a subcarrier spacing of 2). μ • 15kHz (μ=0,1,2,3,4)), considering that the V-BW consists of multiple frequency bands with different subcarrier spacings, the spectral width of each segment of this V-BW is 2. μ • An integer multiple of 12 subcarrier spacings (e.g., μ = 0, 1, 2, 3, 4).

[0171] Furthermore, since a larger subcarrier spacing results in a smaller time-domain length for that subcarrier, to ensure V-PRB alignment in the time domain, a V-PRB with the minimum subcarrier spacing (15kHz) is needed as the baseline. When the subcarrier spacing of the V-PRB is 2 times the minimum subcarrier spacing... μ When it is doubled, there are 2 μ The V-PRBs are placed in parallel in the time domain (i.e., in the same position in the frequency domain), such as Figure 5 and Figure 6 As shown.

[0172] It should be noted that the minimum subcarrier spacing used as the baseline in this embodiment can be a pre-specified or agreed-upon subcarrier spacing, such as 15kHz as exemplified in this embodiment. In this case, the minimum subcarrier spacing used as the baseline is independent of the minimum subcarrier spacing in V-BW, and can be the same or different. However, this disclosure is not limited to this; in other embodiments, the minimum subcarrier spacing in V-BW can also be used as the baseline.

[0173] For example, such as Figure 5 As shown, assuming the V-BW has subcarrier spacings of 15kHz, 30kHz, 60kHz, and 120kHz from bottom to top, then the subcarrier spacings from the smallest 15kHz to 120kHz are uniformly numbered as V-PRB0, V-PRB1, V-PRB2, V-PRB3, V-PRB4, V-PRB5, V-PRB6, V-PRB7, V-PRB8, V-PRB9, V-PRB10, V-PRB11, ..., where the subcarriers... The subcarriers are spaced 15kHz apart and correspond to V-PRB0, V-PRB1, V-PRB2, and V-PRB3. The subcarriers are spaced 30kHz apart and placed in parallel in the time domain as V-PRB4 and V-PRB5, V-PRB6 and V-PRB7, respectively. The subcarriers are spaced 60kHz apart and placed in parallel in the time domain as V-PRB8, V-PRB9, V-PRB10 and V-PRB11, etc. Subsequently, the base station only needs to tell the terminal the V-PRB number, without needing to indicate its time and frequency domain position one by one.

[0174] For example, such as Figure 6 As shown, assuming that the V-BW has subcarrier spacings of 30kHz, ..., 15kHz from bottom to top, the horizontal axis represents the time domain, with each cell representing a symbol length (this disclosure uses OFDM symbols as examples, but is not limited to this), and the vertical axis represents the frequency domain, with each cell representing a subcarrier. That is, each V-PRB, such as V-PRB0, V-PRB1, ..., V-PRB6, has a frequency domain length of 12 subcarriers. V-PRB0 and V-PRB1, with a subcarrier spacing of 30kHz, are placed in parallel in the time domain and have the same frequency domain position. Only V-PRB6, with a subcarrier spacing of 15kHz, is placed in the time domain.

[0175] Step 3: Number the V-PRBs based on the above configuration, following the following numbering rules: increasing sequentially from left to right in the time domain and from bottom to top in the frequency domain (e.g., ...). Figure 5 As shown):

[0176] In the time domain, if the subcarrier spacing of V-PRB is 2 times the minimum subcarrier spacing...μ (For example, μ = 0, 1, 2, 3, 4) times, then the time domain is placed in parallel 2 μ Each V-PRB is numbered from left to right, with the leftmost V-PRB having the smallest number, and the numbers increasing sequentially.

[0177] When the domain placement is completed 2 μ After one V-PRB, the next V-PRB is numbered according to the frequency domain direction;

[0178] In the frequency domain, V-PRBs are numbered in ascending order of frequency, with the V-PRB at the lowest frequency having the smallest number, and so on, increasing sequentially (e.g., ...). Figure 5 (Numbered from bottom to top);

[0179] That is, the V-PRB number is smallest in the lowest layer (frequency domain) and the leftmost layer (time domain).

[0180] Step 4: In order to facilitate the indexing of V-PRB when allocating time and frequency resources to the terminal in the future, the serving cell sends the V-BW configuration information to the terminal in a static form through higher layer configuration information (such as the first configuration message, which can be RRC signaling, and can also be called the first RRC signaling to distinguish it from other RRC signaling). Static configuration means that the V-BW configuration information remains unchanged if the V-BW configuration remains unchanged.

[0181] The configuration information of V-BW includes: the number of non-continuous spectrum segments constituting V-BW, the subcarrier spacing of each non-continuous spectrum segment, and the number of V-PRB segments contained in each non-continuous spectrum segment (that is, the frequency domain width of each non-continuous spectrum segment, i.e., the bandwidth of that spectrum segment).

[0182] Specifically, the configuration information of the spectrum resources constituting the total virtual bandwidth (V-BW) includes, but is not limited to, the following:

[0183] Identifier for each spectrum segment: Identifies multiple non-contiguous spectrum resources with different subcarrier spacing that constitute the V-BW. The identifier is an integer between 1 and M0, where M0 is an integer greater than or equal to 1. M0 indicates that the V-BW consists of M0 non-contiguous spectrum segments.

[0184] The subcarrier spacing of each spectrum segment, where the subcarrier spacing is 2 μ • 15kHz (e.g., μ = 0, 1, 2, 3, 4);

[0185] The number of V-PRBs contained in each spectrum segment.

[0186] Step 5: To improve spectrum resource utilization, the base station divides the virtual bandwidth (V-BW) into multiple V-BWPs and schedules one or more of these V-BWPs for the terminal based on its service requirements, such as... Figure 7 As shown, assume that V-BWP1 includes V-PRB0 and V-PRB1 with a subcarrier spacing of 15kHz; V-BWP2 includes V-PRB3 with a subcarrier spacing of 15kHz, and V-PRB4 and V-PRB5 with a subcarrier spacing of 30kHz; V-BWP3 includes V-PRB6 and V-PRB7 with a subcarrier spacing of 30kHz, and V-PRB8, V-PRB9, V-PRB10, and V-PRB11 with a subcarrier spacing of 60kHz. Figure 7 It can be seen that a V-BWP can also be composed of multiple non-contiguous spectrum segments with different subcarrier spacings, such as V-BWP2 and V-BWP3. If V-BWP2 and V-BWP3 are scheduled to the terminal, multiple non-contiguous spectrum segments with different subcarrier spacings can be allocated to the terminal through a DCI. A V-BWP can also be composed of a spectrum segment with the same subcarrier spacing, such as V-BWP1.

[0187] See again Figure 7 As can be seen, the base station can decide which V-PRBs in a V-BW to be classified as a V-BWP based on actual needs. V-PRBs between adjacent V-BWPs can be consecutive or non-consecutive. For example, V-PRB2 between V-BWP1 and V-BWP2 may not belong to either V-BWP1 or V-BWP2.

[0188] This can be understood as the base station's operating bandwidth being the entire V-BW, while the terminal's operating bandwidth is only a portion of it, namely the V-BWP. Specifically, in the downlink direction, the base station can configure multiple V-BWPs for a terminal simultaneously, but at any given time, only one V-BWP can be active. Figure 7 As shown.

[0189] Step 6: In order to reduce scheduling complexity and signaling overhead, the base station first sends the downlink V-BWP configuration information scheduled for the terminal to the terminal through RRC signaling (here, we take the second configuration message using RRC signaling as an example; to distinguish it, it can also be called the second RRC signaling).

[0190] Specifically, a base station can configure a maximum of N (N is an integer greater than 1) downlink V-BWPs for a terminal.

[0191] The base station can configure up to N downlink V-BWPs for the terminal by configuring a downlink V-BWP add list. The specific parameters of the V-BWPs can include downlink V-BWP common parameters and V-BWP specific parameters. The downlink V-BWP common parameters are the parameters shared by all V-BWPs in the entire cell where the terminal is located, while the V-BWP specific parameters are V-BWP parameters specific to the terminal, such as the UE.

[0192] In summary, the configuration information for downlink V-BWP includes, but is not limited to, the following parameters:

[0193] Downlink V-BWP Addition List: Identifies the downlink V-BWPs configured for the terminal, specifically an integer greater than 1 and less than N, where N represents the maximum number of downlink V-BWPs.

[0194] V-BWP Identifier: A V-BWP number uniquely identifies a V-BWP;

[0195] Downlink V-BWP common parameters:

[0196] Location and bandwidth: Specifies the bandwidth and frequency domain location of this V-BWP, specifically the index range of the V-PRB;

[0197] Subcarrier spacing: The minimum subcarrier spacing of this V-BWP is defined as the subcarrier spacing of this V-BWP;

[0198] Cyclic prefix: Indicates whether the V-BWP uses an extended prefix.

[0199] V-BWP specific parameters:

[0200] PDCCH dedicated configuration, as shown in step 7;

[0201] The specific configuration for PDSCH is shown in step 8.

[0202] The first activated downlink V-BWP identifier: Select one V-BWP from the N added V-BWPs to activate, indicating the first activated V-BWP when the terminal receives a Radio Resource Control (RRC) configuration or reconfiguration message;

[0203] Default downlink V-BWP identifier: Select one from the N added V-BWPs as the default downlink V-BWP, so that when the terminal has no service transmission within a predetermined period of time, it can fall back to the default V-BWP.

[0204] Step 7: A V-BWP parameter related to PDCCH transmission in the serving cell identifies the resource configuration information configured by the terminal for PDCCH transmission. This informs the terminal on which time-frequency resources to receive the PDCCH. Specifically, it includes the control resource set addition / release list and the search space addition / release list, and includes, but is not limited to, the following information:

[0205] Control Resource Set Addition List: The control resource sets added for specific terminal configurations;

[0206] Control Resource Set Release Class Table: Releases control resource sets with specific terminal configurations;

[0207] Search space addition list: The set of search spaces added for terminal-specific configurations;

[0208] Search space release list: A set of search spaces for terminal-specific configurations that are being released;

[0209] Control resource set:

[0210] Control Resource Set Identifier: Identifies a control resource set within the serving cell. It is an integer between 1 and M, where M is an integer greater than 1. M refers to the maximum number of configurable control resource sets within the serving cell.

[0211] Frequency domain resources: frequency domain resources that control resource sets, bit string type data, size N bits (N is an integer greater than or equal to 1, for example, 45), where each bit indicates a corresponding radio resource block group;

[0212] Duration: The continuous duration of the control resource set, expressed as a number of symbols, is an integer between 1 and M2, where M2 is an integer greater than 1 and represents the maximum number of OFDM symbols in the control resource set.

[0213] Step 8: Parameters related to PDSCH transmission in a V-BWP of the serving cell, representing the PDSCH resource configuration information that can be configured for the terminal in the V-BWP, specifically including the PDSCH frequency domain resource allocation type and the PDSCH time domain allocation list, including but not limited to the following information:

[0214] PDSCH frequency domain resource allocation types: specifically including resource allocation type 0 (Type 0 represents non-contiguous frequency domain resource allocation), resource allocation type 1 (Type 1 represents continuous frequency domain resource allocation), and dynamic switching;

[0215] PDSCH time domain allocation list (Note: This refers to the time domain configuration information):

[0216] The PDSCH time-domain resource allocation list contains one or more PDSCH time-domain resource allocation parameters, where each PDSCH time-domain resource allocation parameter is used to configure the time-domain relationship between PDCCH and PDSCH (Note: A PDCCH may contain multiple DCIs, which tells the terminal which DCI in the PDCCH to parse to obtain the time-domain resources allocated to the PDSCH).

[0217] PDSCH temporal resource allocation (Note: This refers to which parameters are carried in the DCI of the above parsing process):

[0218] Slot offset K0: Indicates the slot offset between the DCI and its scheduled PDSCH, taking an integer between 1 and M3, where M3 is an integer greater than 1, and M3 represents the maximum slot offset.

[0219] The basic time slot offset indicator Koffset;

[0220] Mapping type: PDSCH mapping type, including PDSCH type A and PDSCH type B (Note: similar to resource allocation type 0 and resource allocation type 1 of frequency domain PDSCH; there are also two mapping types in the time domain);

[0221] Start symbol and length: Identifies the start symbol (S) and length (L) of the PDSCH.

[0222] Step 9: Considering that the resource blocks of the activated PDSCH may have different subcarrier spacings, cross-slot scheduling is performed using the slot with the smallest subcarrier spacing (15kHz) as the basic slot. For other subcarrier spacings (2... μ For a 15kHz resource (e.g., μ = 1, 2, 3, 4), a basic time slot offset indicator needs to be introduced to indicate its specific time slot location.

[0223] like Figure 8 As shown, with a minimum subcarrier spacing of 2 μ • A 1ms time slot at 15kHz (μ=0) is the basic time slot. For a 30kHz (2) time slot with a time slot length of 0.5ms... μ For a 15kHz (μ=1) subcarrier, a 1-bit offset indicator within the basic time slot needs to be added to the time slot offset indicator of the basic time slot to indicate whether it is the first 0.5ms time slot or the last 0.5ms time slot.

[0224] To facilitate subsequent configuration, the base station first sends the configuration information of the minimum scheduling slot offset and the basic slot offset (referred to as the PDSCH cross-slot scheduling configuration information) to the terminal via an RRC message (which may be the second RRC signaling mentioned above). Specifically, the RRC can configure one or two values ​​for the minimum scheduling slot frequency shift. If it is one value, a 1-bit DCI can be used to indicate whether cross-slot scheduling is activated; if it is two values, a 1-bit DCI can be used to select one value from the two candidate values ​​and assign it to the terminal. Specifically, this RRC configuration information includes, but is limited to, the following information:

[0225] Minimum scheduling slot offset K min :

[0226] If it is a single value, a 1-bit DCI can be used to indicate whether cross-slot scheduling is activated;

[0227] If there are two values, a value can be selected from the two candidate values ​​using a 1-bit DCI instruction.

[0228] The offset within the basic time slot varies according to the subcarrier spacing. With 15kHz as the basic time slot, when the subcarrier spacing is (2... μ • At 15kHz (e.g., μ = 1, 2, 3, 4), the value range of this offset is 0 to (2... μ An integer between -1 (e.g., μ = 1, 2, 3, 4).

[0229] For example, using a 1ms time slot with a minimum subcarrier spacing of 15kHz as the basic time slot, for a 30kHz subcarrier spacing with a time slot length of 0.5ms, the specific time slot for the terminal to receive the PDSCH needs to be increased by a 1-bit basic time slot offset K0 to indicate whether it is the first 0.5ms time slot or the last 0.5ms time slot within the basic time slot. Correspondingly, the basic time slot offset indicator in the DCI is also 1 bit. If the basic time slot offset indicator is "0", it indicates the first 0.5ms time slot, that is, the PDCCH and the scheduled PDSCH are separated by K0+0.5ms; when the value is "1", it indicates the last 0.5ms time slot, that is, the PDCCH and the scheduled PDSCH are separated by K0+1ms.

[0230] For a 60kHz subcarrier spacing with a slot length of 0.25ms, the offset within the basic slot is 2 bits. When the value is "00", it represents the first 0.25ms slot within the basic slot; when the value is "01", it represents the second 0.25ms slot within the basic slot; when the value is "10", it represents the third 0.25ms slot within the basic slot; and when the value is "11", it represents the fourth 0.25ms slot within the basic slot. Correspondingly, the basic time slot offset indicator in DCI is also 2 bits. If the basic time slot offset indicator is "00", it indicates the first 0.25ms time slot, that is, the PDCCH and the scheduled PDSCH are separated by K0+0.25ms; when the value is "01", it indicates the second 0.25ms time slot, that is, the PDCCH and the scheduled PDSCH are separated by K0+0.5ms; when the value is "10", it indicates the third 0.25ms time slot, that is, the PDCCH and the scheduled PDSCH are separated by K0+0.75ms; when the value is "11", it indicates the fourth 0.25ms time slot, that is, the PDCCH and the scheduled PDSCH are separated by K0+1ms.

[0231] For a 120kHz subcarrier spacing with a slot length of 0.125ms, the offset within the basic slot is 3 bits. A value of "000" represents the first 0.125ms slot within the basic slot; a value of "001" represents the second 0.125ms slot; a value of "010" represents the third 0.125ms slot; a value of "011" represents the fourth 0.125ms slot; a value of "100" represents the fifth 0.125ms slot; a value of "101" represents the sixth 0.125ms slot; a value of "110" represents the seventh 0.125ms slot; and a value of "111" represents the eighth 0.125ms slot. Correspondingly, the basic time slot offset indicator in DCI is also 3 bits. If the basic time slot offset indicator is "000", it indicates the first 0.125ms time slot, meaning the PDCCH and the scheduled PDSCH are separated by K0+0.125ms; if the value is "001", it indicates the second 0.125ms time slot, meaning the PDCCH and the scheduled PDSCH are separated by K0+0.25ms; if the value is "010", it indicates the third 0.125ms time slot, meaning the PDCCH and the scheduled PDSCH are separated by K0+0.375ms; and if the value is "011", it indicates the fourth 0.125ms time slot, meaning the PDCCH and the scheduled PDSCH are separated by K0+0.375ms. The interval between SCHs is K0+0.5ms; when the value is "100", it represents the fifth 0.125ms time slot within the basic time slot, that is, the interval between PDCCH and the scheduled PDSCH is K0+0.625ms; when the value is "101", it represents the sixth 0.125ms time slot, that is, the interval between PDCCH and the scheduled PDSCH is K0+0.75ms; when the value is "110", it represents the seventh 0.125ms time slot, that is, the interval between PDCCH and the scheduled PDSCH is K0+0.875ms; when the value is "111", it represents the eighth 0.125ms time slot, that is, the interval between PDCCH and the scheduled PDSCH is K0+1ms.

[0232] For a 240kHz subcarrier spacing with a slot length of 0.0625ms, the offset within the basic slot is 4 bits. A value of "0000" represents the first 0.0625ms slot within the basic slot; "0001" represents the second; "0010" represents the third; "0011" represents the fourth; "0100" represents the fifth; "0101" represents the sixth; "0110" represents the seventh; and "0111" represents the fourth. The eighth 0.0625ms time slot within the basic time slot; when the value is "1000", it represents the ninth 0.0625ms time slot within the basic time slot; when the value is "1001", it represents the tenth 0.0625ms time slot within the basic time slot; when the value is "1010", it represents the eleventh 0.0625ms time slot within the basic time slot; when the value is "1011", it represents the twelfth 0.0625ms time slot within the basic time slot; when the value is "1100", it represents the thirteenth 0.0625ms time slot within the basic time slot; when the value is "1101", it represents the fourteenth 0.0625ms time slot within the basic time slot; when the value is "1110", it represents the fifteenth 0.0625ms time slot within the basic time slot; when the value is "1111", it represents the sixteenth 0.0625ms time slot within the basic time slot. Correspondingly, the basic time slot offset indicator in DCI is also 4 bits. When the basic time slot offset indicator takes the values ​​"0000", "0001", "0010", "0011", "0100", "0101", "0110", "0111", "1000", "1001", "1010", "1011", "1100", "1101", "1110", and "1111", it indicates that the PDCCH and the scheduled PDSCH are respectively... The intervals are K0+0.0625ms, K0+0.125ms, K0+0.1875ms, K0+0.25ms, K0+0.3125ms, K0+0.375ms, K0+0.4375ms, K0+0.5ms, K0+0.5625ms, K0+0.625ms, K0+0.6875ms, K0+0.75ms, K0+0.8125ms, K0+0.875ms, K0+0.9375ms, and K0+1ms.

[0233] Using 15kHz as the basic time slot, and considering a maximum subcarrier spacing of 240kHz, the offset within the basic time slot ranges from 0 to 15 (integers). If a maximum subcarrier spacing of 120kHz is supported, the offset within the basic time slot ranges from 0 to 7 (integers).

[0234] Step 10: When the base station has downlink data transmission, the base station informs the terminal of the time and frequency resources used for PDSCH transmission via PDDCH.

[0235] First, let's introduce the PDSCH frequency domain resources. Specifically, the DCI indicates the active V-BWP identifier, and it is accessed through a space of size N. V-RBG The bitmap indicates which Virtual Resource Block Groups (V-RBGs) within the V-BWP bandwidth have been allocated to the terminal, with each bit corresponding to one V-RBG.

[0236] Specifically, the size of V-RBG can be determined based on the size of V-BWP, that is, the number of V-PRBs in each V-RBG. The specific mapping relationship is shown in Table 1.

[0237] Table 1

[0238]

[0239] As shown in Table 1, the larger the bandwidth of a V-BWP, the more V-PRBs a V-RBG contains. For example, if a V-BWP contains 1-36 V-PRBs, then a V-RBG contains 2 V-PRBs. In other words, the larger the V-BWP, the more V-PRBs a V-RBG contains, which reduces the number of bits in the bitmap. Specifically, the configuration information of this DCI includes, but is not limited to, the following:

[0240] Downlink resource allocation type 0 (Note: i.e., Type 0 above, indicating non-continuous frequency domain resource allocation);

[0241] Activated downlink V-BWP identifier;

[0242] V-RBG bitmap: The highest bit of this bitmap corresponds to V-RBG0, and the lowest bit corresponds to V-RBG(N). V-RBG –1), and so on. If a V-RBG is assigned to a UE, the corresponding bit in the bitmap is set to 1; if a V-RBG is not assigned to a UE, the corresponding bit in the bitmap is set to 0.

[0243] Step 11: Next, the time-domain resource configuration of PDSCH is introduced. In order to reduce terminal power consumption, cross-time-slot scheduling is supported, that is, PDCCH schedules PDSCH across time slots, and the minimum value of cross-time-slot scheduling is indicated by the minimum scheduling time slot offset.

[0244] Based on the aforementioned RRC configuration messages (including the first RRC signaling and the second RRC signaling), the base station informs the terminal via PDCCH of the time-frequency resources occupied by the PDSCH scheduled for it, taking into account the minimum scheduling slot offset K in the aforementioned RRC message / RRC configuration message. min The time-domain resource configuration information includes the basic time slot offset indicator, etc. This information can include the aforementioned time slot offset K0, mapping type, start symbol and length, and K... min Offset within the basic time slot, etc.

[0245] Specifically, the PDSCH time-domain resource configuration information for terminal scheduling includes, but is not limited to, the following information:

[0246] Minimum scheduling slot offset indicator K 0min :

[0247] If the parameter "Minimum Scheduling Slot Offset" is not configured at the higher level, then the value is 0 bits; otherwise, the value is 1 bit.

[0248] If the upper layer configures a "minimum scheduling slot offset" value, this bit is used to indicate whether the minimum scheduling slot offset is activated;

[0249] If the upper layer configures two "minimum scheduling slot offset" values, this bit is used to indicate that one of the two values ​​should be used.

[0250] Time-domain resource allocation: The time slot corresponding to the smallest subcarrier interval is used as the baseline, and its time slot offset is defined as K0 (K0≥K). 0min (That is, the position of PDSCH K0 times after PDCCH), the start and length indicator is SLIV (Start and length indicator value);

[0251] Basic time slot offset indicator K offset Based on the time slot offset K0, and using the time slot corresponding to the minimum subcarrier spacing (15kHz) as the baseline, a corresponding basic time slot offset indicator K is configured according to the different subcarrier spacings of each frequency domain resource segment. offset To specifically indicate its time slot location, when its subcarrier spacing is (2 μ At 15kHz (μ = 1, 2, 3, 4), its value ranges from 0 to (2). μIntegers between -1)(μ = 1, 2, 3, 4).

[0252] For example, such as Figure 9 As shown, if the minimum scheduling slot offset K configured by RRC min The value range is [1,2], and the minimum scheduling slot offset indicator K in the DCI of the PDCCH is used. 0min 1(K) 0min From the minimum scheduling slot offset K min (A value is selected from the range [1,2]), and the DCI simultaneously indicates the time slot offset K0 = 2 (K0 ≥ K). 0min If the terminal wakes up after two basic time slots, then the terminal needs to wake up after that. At this point, if the subcarrier spacing corresponding to the third basic time slot is 60kHz, and the offset indicator K within the basic time slot indicated in the DCI... offset =2, then take the third sub-slot of the third basic time slot, and start symbol S=4, length L=8.

[0253] like Figure 9 As shown, the time slot between when the terminal receives the PDCCH and before it receives the PDSCH is called the intermediate time slot. During this period, the terminal can enter sleep mode to save power.

[0254] Step 12: The terminal obtains the configuration information for configuring PDSCH resources by detecting the DCI field of the PDCCH, including frequency domain resources and time domain resources. Among them, when the terminal learns from parsing the DCI that the PDCCH schedules PDSCH resources across time slots, after receiving the PDCCH, the terminal will turn off some components and enter sleep mode in the intermediate time slot before the time slot occupied by the PDSCH arrives, in order to save power consumption.

[0255] Specifically, the time slot frequency shift in units of the basic time slot is obtained based on its time slot offset K0, and the offset indicator K within the basic time slot is used to determine the frequency shift. offset It is determined that the time domain resources occupied by the PDSCH received by the terminal are the Kth time slot after K0 basic time slots. offset Each time slot, such as Figure 9 As shown.

[0256] Step 13: After obtaining the time and frequency resources of the PDSCH, the terminal receives and parses the data in the PDSCH on the corresponding time and frequency resources, thereby obtaining the downlink data transmitted by the base station.

[0257] On the one hand, the method provided in this disclosure can allocate a virtual partial bandwidth consisting of multiple non-contiguous spectrum segments to a terminal. In order to reduce signaling overhead and complexity, the configuration information of the virtual bandwidth and the virtual partial bandwidth is sent to the terminal by combining RRC signaling and downlink control information, thereby improving the flexibility of spectrum resource scheduling and the downlink rate of the terminal with lower signaling overhead.

[0258] On the other hand, the method provided in this disclosure can allocate virtual partial bandwidth resources consisting of multiple non-continuous spectrum segments to a terminal. By mapping the resources within the configured virtual partial bandwidth into multiple virtual resource blocks and numbering them, downlink transmission resources can be flexibly configured for the terminal, thereby improving spectrum resource utilization and terminal downlink speed.

[0259] Furthermore, the method provided in this disclosure can further improve the downlink rate of the terminal with lower terminal power consumption. While considering configuring the terminal with a virtual partial bandwidth composed of multiple segments of non-contiguous spectrum with different subcarrier spacings, in order to reduce terminal power consumption, it supports cross-time slot scheduling of the terminal. Considering that different subcarrier lengths correspond to different time slot lengths, an offset indicator within the basic time slot is added on the basis of the minimum scheduling time slot offset. This allows the terminal to consider crossing multiple time slots of different lengths during cross-time slot scheduling, thereby improving the downlink rate in a more energy-efficient manner.

[0260] Meanwhile, the method provided in this disclosure has minimal impact on the terminal, exhibiting good backward compatibility and deployment feasibility. The method provided in this disclosure enhances existing protocols without introducing new protocol processes, resulting in minimal modifications to existing protocols and lower implementation difficulty.

[0261] Furthermore, embodiments of this disclosure also provide a wireless communication method, which may include the following steps:

[0262] The terminal receives a first configuration message sent by the network device. The first configuration message includes configuration information of virtual bandwidth (V-BW) and configuration information of multiple virtual bandwidth portions (V-BWP). The V-BW includes multiple segments of non-contiguous spectrum with different subcarrier spacings. The V-BW includes multiple V-BWPs. At least one V-BWP exists among the multiple V-BWPs. The virtual physical resource block (V-PRB) in the at least one V-BWP has a different subcarrier spacing.

[0263] The terminal receives a second configuration message sent by the network device. The second configuration message is used to configure downlink V-BWP configuration information and PDSCH cross-timeslot scheduling configuration information for the terminal. The downlink V-BWP is included among the multiple V-BWPs. The configuration information of the downlink V-BWP includes downlink V-BWP common parameters, resource configuration information of the downlink V-BWP related to the transmission physical downlink control channel (PDCCH), and resource configuration information of the downlink V-BWP related to the transmission physical downlink shared channel (PDSCH).

[0264] The terminal receives PDCCH from the network device according to the resource configuration information related to the downlink V-BWP and the transmission PDCCH. The downlink control information (DCI) in the PDCCH includes the configuration information for activating the downlink V-BWP and the PDSCH cross-time slot scheduling information. The PDSCH cross-time slot scheduling information is generated based on the PDSCH cross-time slot scheduling configuration information.

[0265] The terminal receives PDSCH from the network device based on the downlink V-BWP common parameters, the resource configuration information of the downlink V-BWP related to the transmission physical downlink shared channel PDSCH, the PDSCH cross-timeslot scheduling configuration information, and the PDSCH cross-timeslot scheduling information, and enters sleep mode in the intermediate time slot between receiving the PDCCH and the PDSCH.

[0266] Other aspects of the embodiments disclosed herein can be found in the other embodiments described above.

[0267] It should also be understood that the above is only to help those skilled in the art better understand the embodiments of this disclosure, and is not intended to limit the scope of the embodiments of this disclosure. Those skilled in the art can obviously make various equivalent modifications or changes based on the examples given above. For example, some steps in the above methods may be unnecessary, or new steps may be added, etc. Alternatively, any combination of any two or more of the above embodiments may be used. Such modifications, changes, or combinations also fall within the scope of the embodiments of this disclosure.

[0268] It should also be understood that the above description of the embodiments of this disclosure focuses on highlighting the differences between the various embodiments. Similarities or differences not mentioned can be referred to each other, and for the sake of brevity, they will not be repeated here.

[0269] It should also be understood that the sequence number of each process does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this disclosure.

[0270] It should also be understood that in the embodiments of this disclosure, "pre-setting" or "pre-defining" can be achieved by pre-saving the corresponding code, table or other means that can be used to indicate relevant information in the device (e.g., including terminal and network devices), and this disclosure does not limit the specific implementation method.

[0271] It should also be understood that, in the various embodiments of this disclosure, unless otherwise specified or in case of logical conflict, the terminology and / or descriptions between different embodiments are consistent and can be referenced by each other, and the technical features in different embodiments can be combined to form new embodiments according to their inherent logical relationships.

[0272] The preceding text has detailed examples of wireless communication methods provided in this disclosure. It is understood that, in order to achieve the aforementioned functions, terminals and network devices include corresponding hardware structures and / or software modules for performing each function. Those skilled in the art should readily recognize that, based on the units and algorithm steps of the examples described in conjunction with the embodiments disclosed herein, this disclosure can be implemented in hardware or a combination of hardware and computer software. Whether a function is implemented in hardware or by computer software driving hardware depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this disclosure.

[0273] Furthermore, embodiments of this disclosure also provide a network device, which may include:

[0274] The first processing unit is configured to configure multiple segments of discontinuous spectrum with different subcarrier spacings as virtual bandwidths V-BW, and to divide the V-BW into multiple virtual bandwidth parts V-BWPs, wherein at least one V-BWP exists among the multiple V-BWPs, and the virtual physical resource blocks V-PRBs in the at least one V-BWP have different subcarrier spacings.

[0275] The first communication unit is used to send the configuration information of V-BW and the configuration information of multiple V-BWPs to the terminal through the first configuration message;

[0276] The first communication unit is further configured to send the configuration information of the downlink V-BWP configured for the terminal and the PDSCH cross-timeslot scheduling configuration information to the terminal via a second configuration message, wherein the downlink V-BWP is included among the plurality of V-BWPs, and the configuration information of the downlink V-BWP includes downlink V-BWP common parameters, resource configuration information of the downlink V-BWP related to the transmission physical downlink control channel PDCCH, and resource configuration information of the downlink V-BWP related to the transmission physical downlink shared channel PDSCH;

[0277] The first communication unit is further configured to send a PDCCH to the terminal according to the resource configuration information related to the downlink V-BWP and the transmission PDCCH. The downlink control information (DCI) in the PDCCH includes the configuration information for activating the downlink V-BWP and the PDSCH cross-time slot scheduling information. The PDSCH cross-time slot scheduling information is generated based on the PDSCH cross-time slot scheduling configuration information.

[0278] The first communication unit is further configured to send PDSCH to the terminal according to the downlink V-BWP common parameters, the resource configuration information of the downlink V-BWP related to the transmission physical downlink shared channel (PDSCH), the PDSCH cross-timeslot scheduling configuration information, and the PDSCH cross-timeslot scheduling information.

[0279] Other aspects of the network devices provided in this disclosure can be found in the other embodiments described above.

[0280] Furthermore, embodiments of this disclosure also provide a terminal, which may include:

[0281] The second communication unit is used to receive a first configuration message sent by the network device. The first configuration message includes configuration information of virtual bandwidth (V-BW) and configuration information of multiple virtual bandwidth portions (V-BWP). The V-BW includes multiple segments of non-contiguous spectrum with different subcarrier spacings. The V-BW includes multiple V-BWPs. At least one V-BWP exists among the multiple V-BWPs. The virtual physical resource block (V-PRB) in the at least one V-BWP has a different subcarrier spacing.

[0282] The second communication unit is further configured to receive a second configuration message sent by the network device. The second configuration message is configured to configure downlink V-BWP configuration information and PDSCH cross-timeslot scheduling configuration information for the terminal. The downlink V-BWP is included among the plurality of V-BWPs. The configuration information of the downlink V-BWP includes downlink V-BWP common parameters, resource configuration information of the downlink V-BWP related to the transmission physical downlink control channel (PDCCH), and resource configuration information of the downlink V-BWP related to the transmission physical downlink shared channel (PDSCH).

[0283] The second communication unit is further configured to receive PDCCH from the network device according to the resource configuration information related to the downlink V-BWP and the transmission PDCCH. The downlink control information (DCI) in the PDCCH includes the configuration information for activating the downlink V-BWP and the PDSCH cross-time slot scheduling information. The PDSCH cross-time slot scheduling information is generated based on the PDSCH cross-time slot scheduling configuration information.

[0284] The second communication unit is further configured to receive PDSCH from the network device according to the downlink V-BWP common parameters, the resource configuration information of the downlink V-BWP related to the transmission physical downlink shared channel PDSCH, the PDSCH cross-timeslot scheduling configuration information, and the PDSCH cross-timeslot scheduling information, and enter sleep mode in the intermediate time slot between receiving the PDCCH and the PDSCH.

[0285] Other aspects of the terminal provided in this disclosure can be found in the other embodiments described above.

[0286] like Figure 10 The communication device 1000 shown (which may be a terminal or a network device) may include a processor 1010, a memory 1020, and a transceiver 1030.

[0287] Furthermore, embodiments of this disclosure also provide a wireless communication system, including a network device and a terminal.

[0288] Those skilled in the art will clearly understand that the steps performed by the terminal and network device and the corresponding beneficial effects can be referred to the relevant descriptions of the terminal and network device in the above method, and will not be repeated here for the sake of brevity.

[0289] It should be understood that the above division of units is only a functional division, and there may be other division methods in actual implementation.

[0290] This disclosure also provides a processing apparatus, including a processor and an interface; the processor is configured to execute the wireless communication method in any of the above method embodiments.

[0291] It should be understood that the aforementioned processing device can be a single chip. For example, the processing device can be a Field-Programmable Gate Array (FPGA), an Application-Specific Integrated Circuit (ASIC), a System-on-Chip (SoC), a Central Processing Unit (CPU), a Network Processor (NP), a Digital Signal Processor (DSP), a Micro Controller Unit (MCU), a Programmable Logic Device (PLD), or other integrated chips.

[0292] In implementation, each step of the above method can be completed by integrated logic circuits in the processor's hardware or by instructions in software. The steps of the method disclosed in this embodiment can be directly implemented by a hardware processor, or by a combination of hardware and software modules within the processor. The software modules can reside in readily available storage media in the art, such as random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, or registers. This storage medium is located in memory; the processor reads information from the memory and, in conjunction with its hardware, completes the steps of the above method. To avoid repetition, detailed descriptions are omitted here.

[0293] It should be noted that the processor in the embodiments of this disclosure can be an integrated circuit chip with signal processing capabilities. In implementation, each step of the above method embodiments can be completed by the integrated logic circuitry in the processor's hardware or by instructions in software form. The processor can be a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components. It can implement or execute the methods, steps, and logic block diagrams disclosed in the embodiments of this disclosure. The general-purpose processor can be a microprocessor or any conventional processor. The steps of the methods disclosed in the embodiments of this disclosure can be directly embodied in the execution of a hardware decoding processor, or executed by a combination of hardware and software modules in the decoding processor. The software modules can be located in random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, registers, or other mature storage media in the art. The storage medium is located in memory, and the processor reads the information in the memory and, in conjunction with its hardware, completes the steps of the above method.

[0294] This disclosure also provides a computer-readable medium having a computer program stored thereon, which, when executed by a computer, implements the wireless communication method in any of the above method embodiments.

[0295] This disclosure also provides a computer program product that, when executed by a computer, implements the wireless communication method in any of the above method embodiments.

[0296] This disclosure also provides a system-on-a-chip (SoC) comprising a processing unit and a communication unit. The processing unit may be, for example, a processor, and the communication unit may be, for example, an input / output interface, pins, or circuitry. The processing unit can execute computer instructions to cause chips within the terminal, master node, and slave node to perform any of the wireless communication methods provided in the above-described embodiments of this disclosure.

[0297] Optionally, the computer instructions are stored in a storage unit.

[0298] Optionally, the storage unit can be an internal storage unit within the chip, such as a register or cache. Alternatively, it can be an external storage unit located within the terminal, such as read-only memory (ROM) or other types of static storage devices capable of storing static information and instructions, such as random access memory (RAM). The processor mentioned above can be a CPU, microprocessor, ASIC, or one or more integrated circuits used to control the execution of programs for the aforementioned wireless communication method. The processing unit and the storage unit can be decoupled and disposed on different physical devices, connected via wired or wireless means to implement their respective functions, thereby supporting the system chip in implementing the various functions described in the above embodiments. Alternatively, the processing unit and the memory can also be coupled to the same device.

[0299] In the above embodiments, implementation can be achieved, in whole or in part, through software, hardware, firmware, or any combination thereof. When implemented in software, it can be implemented, in whole or in part, as a computer program product. This computer program product includes one or more computer instructions. When these computer instructions are loaded and executed on a computer, all or part of the flow or function according to the embodiments of this disclosure is generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, the computer instructions can be transmitted from one website, computer, server, or data center to another via wired (e.g., coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any available medium accessible to a computer or a data storage device such as a server or data center that integrates one or more available media. The available media can be magnetic media (e.g., floppy disks, hard disks, magnetic tapes), optical media (e.g., high-density digital video discs (DVDs)), or semiconductor media (e.g., solid-state disks (SSDs)).

[0300] In the several embodiments provided in this disclosure, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between apparatuses or units may be electrical, mechanical, or other forms.

[0301] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0302] In addition, the functional units in the various embodiments of this disclosure can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0303] In this disclosure, various objects such as messages / information / devices / network elements / systems / devices / actions / operations / processes / concepts may be named. It is understood that these specific names do not constitute a limitation on the relevant objects. The names may be changed depending on the scenario, context, or usage habits. The understanding of the technical meaning of the technical terms in this disclosure should be mainly determined from their functions and technical effects embodied / performed in the technical solution.

[0304] In the various embodiments of this disclosure, unless otherwise specified or in case of logical conflict, the terminology and / or descriptions between different embodiments are consistent and can be referenced by each other. Technical features in different embodiments can be combined to form new embodiments based on their inherent logical relationships.

[0305] The above description is merely a specific embodiment of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.

Claims

1. A wireless communication method, characterized in that, include: The network device configures multiple segments of discontinuous spectrum with different subcarrier spacing as virtual bandwidth V-BW, and divides the V-BW into multiple virtual bandwidth parts V-BWP. Among the multiple V-BWP, there is at least one V-BWP, and the virtual physical resource block V-PRB in the at least one V-BWP has different subcarrier spacing. The network device sends the configuration information of V-BW and the configuration information of multiple V-BWPs to the terminal through the first configuration message; The network device sends the downlink V-BWP configuration information and PDSCH cross-timeslot scheduling configuration information configured for the terminal to the terminal through a second configuration message. The downlink V-BWP is included among the multiple V-BWPs. The configuration information of the downlink V-BWP includes downlink V-BWP common parameters, resource configuration information of the downlink V-BWP related to the transmission physical downlink control channel PDCCH, and resource configuration information of the downlink V-BWP related to the transmission physical downlink shared channel PDSCH. The network device sends a PDCCH to the terminal based on the resource configuration information related to the downlink V-BWP and the transmission PDCCH. The downlink control information (DCI) in the PDCCH includes the configuration information for activating the downlink V-BWP and the PDSCH cross-time slot scheduling information. The PDSCH cross-time slot scheduling information is generated based on the PDSCH cross-time slot scheduling configuration information. The network device sends the PDSCH to the terminal based on the downlink V-BWP common parameters, the resource configuration information related to the downlink V-BWP and the transmission physical downlink shared channel (PDSCH), the PDSCH cross-timeslot scheduling configuration information, and the PDSCH cross-timeslot scheduling information.

2. The method according to claim 1, characterized in that, Network devices configure multiple segments of discontinuous spectrum with different subcarrier spacings as virtual bandwidth (V-BW), including: The network device will arrange the multiple non-continuous spectrum segments constituting V-BW in order of increasing subcarrier spacing. The network device maps the V-BW to multiple V-PRBs. If the subcarrier spacing of the V-PRBs is 2 times the minimum subcarrier spacing... μ If the frequency domain positions are the same, then the time domain positions are placed in parallel by 2. μ There are V-PRBs, where μ is an integer greater than or equal to 0; The network devices are numbered in ascending order from left to right in the time domain and from bottom to top in the frequency domain.

3. The method according to claim 2, characterized in that, The configuration information of the V-BW includes: Identification of each spectrum segment; Subcarrier spacing for each spectrum segment; The number of V-PRBs contained in each spectrum segment.

4. The method according to claim 2, characterized in that, Configuration information for multiple V-BWPs includes: V-BWP logo; V-BWP contains the V-PRB number.

5. The method according to claim 2, characterized in that, The configuration information for the downlink V-BWP configured for the terminal includes: The downlink V-BWP addition list is identified by the downlink V-BWPs configured on the terminal, and is an integer greater than 1 and less than N, where N represents the maximum number of downlink V-BWPs. The first activated downlink V-BWP identifier corresponds to a V-BWP selected from a maximum of N downlink V-BWPs configured for the terminal; The default downlink V-BWP identifier corresponds to one V-BWP selected from a maximum of N downlink V-BWPs configured for the terminal.

6. The method according to claim 5, characterized in that, The downlink V-BWP add list includes: The terminal is configured with a maximum of N downlink V-BWP identifiers; The downlink V-BWP common parameters of the cell where the terminal is located; The terminal is configured with up to N downlink V-BWP-specific parameters.

7. The method according to claim 6, characterized in that, The downlink V-BWP common parameters include: The location and bandwidth of the V-BWP in the cell where the terminal is located, specifying the bandwidth and frequency domain location of the V-BWP, are represented as the index range of the V-PRB; The subcarrier spacing of the V-BWP in the cell where the terminal is located is defined as the minimum subcarrier spacing of the V-BWP. The cyclic prefix of the V-BWP in the cell where the terminal is located is used to indicate whether the V-BWP uses an extended prefix.

8. The method according to claim 6, characterized in that, The V-BWP specific parameters include: The terminal is configured with a maximum of N downlink V-BWP PDCCH dedicated configurations, which serve as resource configuration information related to the downlink V-BWP and the transmission physical downlink control channel PDCCH. The PDCCH-specific configurations for up to N downlink V-BWPs configured for the terminal include: A control resource set addition list is used to indicate the control resource sets configured for the terminal; A control resource set release list is used to indicate the release of control resource sets configured for the terminal; A search space addition list is provided to indicate the search space configured for the terminal. A search space release list is used to indicate the deletion of configured search spaces for the terminal; Control resource set, which includes: Control resource set identifier; The frequency domain resources of the control resource set; The duration of the control resource set.

9. The method according to claim 6, characterized in that, The V-BWP specific parameters include: The terminal is configured with a maximum of N dedicated PDSCH configurations for downlink V-BWPs, which serve as resource configuration information related to the transmission of the physical downlink shared channel (PDSCH) for the downlink V-BWPs. The PDSCH-specific configurations for up to N downlink V-BWPs configured for the terminal include: PDSCH frequency domain resource allocation types include resource allocation type 0 and resource allocation type 1; PDSCH time-domain resource allocation list; The time-domain resource allocation list for PDSCH includes: The time slot offset between PDCCH and PDSCH; PDSCH basic slot offset indicator; PDSCH mapping type; The starting symbol and length of PDSCH.

10. The method according to claim 9, characterized in that, The PDSCH cross-timeslot scheduling configuration information includes: Minimum scheduling slot offset; The offset within the basic time slot, which uses the time slot with the smallest subcarrier interval as the basic time slot, for a time slot of 2... μ The minimum subcarrier spacing corresponds to an offset value within the basic time slot ranging from 0 to (2). μ Integers between -1) and μ, where μ is an integer greater than 0.

11. The method according to claim 10, characterized in that, PDSCH cross-slot scheduling information includes: Minimum scheduling slot offset indicator determined from the minimum scheduling slot offset; The time slot offset between PDSCH and PDCCH, wherein the time slot offset is greater than or equal to the minimum scheduling time slot offset indicator; Start and length indicators for PDSCH; The basic time slot offset indicator for PDSCH.

12. The method according to claim 2, characterized in that, The configuration information for activating V-BWP includes: Downlink resource allocation type 0; Activated downlink V-BWP identifier; Size N RGB A bitmap is used to indicate the allocation of Virtual Resource Block Groups (V-RBGs) within the active V-BWP bandwidth to the terminal, wherein the number of V-PRBs contained in each V-RBG is determined according to the size of the active V-BWP.

13. A wireless communication method, characterized in that, include: The terminal receives a first configuration message sent by the network device. The first configuration message includes configuration information of virtual bandwidth (V-BW) and configuration information of multiple virtual bandwidth portions (V-BWP). The V-BW includes multiple segments of non-contiguous spectrum with different subcarrier spacings. The V-BW includes multiple V-BWPs. At least one V-BWP exists among the multiple V-BWPs. The virtual physical resource block (V-PRB) in the at least one V-BWP has a different subcarrier spacing. The terminal receives a second configuration message sent by the network device. The second configuration message is used to configure downlink V-BWP configuration information and PDSCH cross-timeslot scheduling configuration information for the terminal. The downlink V-BWP is included among the multiple V-BWPs. The configuration information of the downlink V-BWP includes downlink V-BWP common parameters, resource configuration information of the downlink V-BWP related to the transmission physical downlink control channel (PDCCH), and resource configuration information of the downlink V-BWP related to the transmission physical downlink shared channel (PDSCH). The terminal receives PDCCH from the network device according to the resource configuration information related to the downlink V-BWP and the transmission PDCCH. The downlink control information (DCI) in the PDCCH includes the configuration information for activating the downlink V-BWP and the PDSCH cross-time slot scheduling information. The PDSCH cross-time slot scheduling information is generated based on the PDSCH cross-time slot scheduling configuration information. The terminal receives PDSCH from the network device based on the downlink V-BWP common parameters, the resource configuration information of the downlink V-BWP related to the transmission physical downlink shared channel PDSCH, the PDSCH cross-timeslot scheduling configuration information, and the PDSCH cross-timeslot scheduling information, and enters sleep mode in the intermediate time slot between receiving the PDCCH and the PDSCH.

14. A network device, characterized in that, include: The first processing unit is configured to configure multiple segments of discontinuous spectrum with different subcarrier spacings as virtual bandwidths V-BW, and to divide the V-BW into multiple virtual bandwidth parts V-BWPs, wherein at least one V-BWP exists among the multiple V-BWPs, and the virtual physical resource blocks V-PRBs in the at least one V-BWP have different subcarrier spacings. The first communication unit is used to send the configuration information of V-BW and the configuration information of multiple V-BWPs to the terminal through the first configuration message; The first communication unit is further configured to send the configuration information of the downlink V-BWP configured for the terminal and the PDSCH cross-timeslot scheduling configuration information to the terminal via a second configuration message, wherein the downlink V-BWP is included among the plurality of V-BWPs, and the configuration information of the downlink V-BWP includes downlink V-BWP common parameters, resource configuration information of the downlink V-BWP related to the transmission physical downlink control channel PDCCH, and resource configuration information of the downlink V-BWP related to the transmission physical downlink shared channel PDSCH; The first communication unit is further configured to send a PDCCH to the terminal according to the resource configuration information related to the downlink V-BWP and the transmission PDCCH. The downlink control information (DCI) in the PDCCH includes the configuration information for activating the downlink V-BWP and the PDSCH cross-time slot scheduling information. The PDSCH cross-time slot scheduling information is generated based on the PDSCH cross-time slot scheduling configuration information. The first communication unit is further configured to send PDSCH to the terminal according to the downlink V-BWP common parameters, the resource configuration information of the downlink V-BWP related to the transmission physical downlink shared channel (PDSCH), the PDSCH cross-timeslot scheduling configuration information, and the PDSCH cross-timeslot scheduling information.

15. A terminal, characterized in that, include: The second communication unit is used to receive a first configuration message sent by the network device. The first configuration message includes configuration information of virtual bandwidth (V-BW) and configuration information of multiple virtual bandwidth portions (V-BWP). The V-BW includes multiple segments of non-contiguous spectrum with different subcarrier spacings. The V-BW includes multiple V-BWPs. At least one V-BWP exists among the multiple V-BWPs. The virtual physical resource block (V-PRB) in the at least one V-BWP has a different subcarrier spacing. The second communication unit is further configured to receive a second configuration message sent by the network device. The second configuration message is configured to configure downlink V-BWP configuration information and PDSCH cross-timeslot scheduling configuration information for the terminal. The downlink V-BWP is included among the plurality of V-BWPs. The configuration information of the downlink V-BWP includes downlink V-BWP common parameters, resource configuration information of the downlink V-BWP related to the transmission physical downlink control channel (PDCCH), and resource configuration information of the downlink V-BWP related to the transmission physical downlink shared channel (PDSCH). The second communication unit is further configured to receive PDCCH from the network device according to the resource configuration information related to the downlink V-BWP and the transmission PDCCH. The downlink control information (DCI) in the PDCCH includes the configuration information for activating the downlink V-BWP and the PDSCH cross-time slot scheduling information. The PDSCH cross-time slot scheduling information is generated based on the PDSCH cross-time slot scheduling configuration information. The second communication unit is further configured to receive PDSCH from the network device according to the downlink V-BWP common parameters, the resource configuration information of the downlink V-BWP related to the transmission physical downlink shared channel PDSCH, the PDSCH cross-timeslot scheduling configuration information, and the PDSCH cross-timeslot scheduling information, and enter sleep mode in the intermediate time slot between receiving the PDCCH and the PDSCH.

16. A computer-readable storage medium storing a computer program, characterized in that, When the computer program is executed by a processor, it implements the method as described in any one of claims 1 to 12 or the method as described in claim 13.

17. A computer program product comprising a computer program / instructions, characterized in that, When the computer program / instructions are executed by the processor, they implement the method as described in any one of claims 1 to 12 or the method as described in claim 13.

Images