Method and device for determining cell timing

Abstract

According to the method for determining the cell timing, a base station indicates offset indication information of offset with a time slot as the granularity and offset with Ts (Ts = 1 / (15 * 103 * 2048) seconds) as the granularity to UE (User Equipment), so that the UE obtains the time offset between cells in a CA (Carrier Aggregation) scene, and the communication performance is improved.

Description

Technical Field

[0001] The present application relates to the field of communication technology, and in particular to a method and device for determining cell timing. Background Art

[0002] Carrier aggregation (CA) technology is a key technology to solve the problem of limited bandwidth of a single carrier. It aggregates two or more component carriers (CC) together to provide services for terminal devices to support larger transmission bandwidth, thereby improving network resource utilization and user experience.

[0003] When the timing of frames among multiple carriers aggregated in the CA technology is not aligned, how to determine the timing among the multiple carriers is an urgent problem to be solved. Summary of the invention

[0004] In a first aspect, an embodiment of the present application provides a communication method, which can be executed by a terminal, or by a module (such as a processor, a chip, or a chip system, etc.) applied to the terminal, or by a logical node, a logical module, or software that can implement all or part of the terminal functions. The method includes: receiving offset indication information, the offset indication information is used to indicate a first offset value x and a second offset value y, the first offset value x is an offset with a time slot as a granularity, and the second offset value y is an offset with a Ts as a granularity, Ts=1 / (15*10 3 *2048) seconds; determine the time offset between the second cell and the first cell according to the above offset indication information. The first cell is a primary cell (PCell) or a primary secondary cell (PSCell), and the second cell is a secondary cell (SCell); or, the first cell is an SCell and the second cell is a PCell / PSCell. The time offset between the second cell and the first cell indicated by the above offset indication information may be the time offset of the second cell relative to the first cell, or the time offset of the first cell relative to the second cell. The above offset indication information may be carried by radio resource control (RRC) signaling. The above time offset may be the time offset between the frame headers of the radio frame i of the second cell and the radio frame i of the first cell, where i is a non-negative integer.

[0005] Through the above method, the terminal receives the offset indication information for indicating the time offset between the second cell and the first cell, and the offset indication information indicates the first offset value with slot as the granularity and the second offset value with Ts as the granularity. The offset indication information accurately indicates the time offset between the second cell and the first cell with slot as the granularity and Ts as the granularity, which can effectively solve the problem of communication performance degradation caused by the misalignment of the frames between the second cell and the first cell, and achieve the beneficial effect of improving the communication performance.

[0006] In certain embodiments of the first aspect, the above-mentioned offset indication information includes first indication information and second indication information, the first indication information is used to indicate a first offset value x, and the second indication information is used to indicate a second offset value y, and determining the time offset between the second cell and the first cell according to the above-mentioned offset indication information includes: determining the above-mentioned time offset between the second cell and the first cell according to the first indication information and the second indication information.

[0007] In certain embodiments of the first aspect, the maximum value of the second offset value y is the number of Ts contained in a slot corresponding to a reference subcarrier spacing (SCS), and the reference SCS is the maximum value of the minimum SCS in the SCS set of the first cell and the minimum SCS in the SCS set of the second cell. Among them, the SCS set of the first cell can be understood as multiple SCSs of the first cell, and the SCS set of the second cell can be understood as multiple SCSs of the second cell. The SCS set of the first cell or the SCS set of the second cell can be configured through RRC signaling.

[0008] In certain embodiments of the first aspect, when the combination of the minimum SCS in the SCS set of the first cell and the minimum SCS in the SCS set of the second cell is not {60 kHz, 60 kHz} or {120 kHz, 120 kHz}:

[0009] If the minimum SCS in the SCS set of PCell / PSCell is less than or equal to the minimum SCS in the SCS set of SCell, then Ts 0 of slot 0 of the first cell is aligned with Ts y of slot ((-1*x)mod M) of the second cell, where x is the first offset value, y is the second offset value, mod is the remainder operation, M is the number of slots included in a frame, and the time domain length of the slot is determined based on the above-mentioned reference SCS, where the first cell is PCell / PSCell and the second cell is SCell.

[0010] If the minimum SCS in the SCS set of PCell / PSCell is greater than the minimum SCS in the SCS set of SCell, then Ts 0 of slot 0 of the first cell is aligned with Ts y of slot (x mod M) of the second cell, where the first cell is SCell and the second cell is PCell / PSCell.

[0011] In certain embodiments of the first aspect, when the combination of the minimum SCS in the SCS set of the first cell and the minimum SCS in the SCS set of the second cell is {60 kHz, 60 kHz} or {120 kHz, 120 kHz}:

[0012] If the frequency domain position of pointA of PCell / PSCell is lower than the frequency domain position of pointA of SCell, then Ts 0 of slot 0 of the first cell is aligned with Ts y of slot ((-1*x)mod M) of the second cell, and the above pointA is the common reference point of the resource block grid, which is aligned with the center position of subcarrier 0 of common resource block 0 corresponding to the configured SCS, where the first cell is PCell / PSCell and the second cell is SCell.

[0013] If the frequency domain position of pointA of PCell / PSCell is higher than the frequency domain position of pointA of SCell, then Ts 0 of slot 0 of the first cell is aligned with Ts y of slot (x mod M) of the second cell, where the first cell is SCell and the second cell is PCell / PSCell.

[0014] In certain embodiments of the first aspect, when the combination of the minimum SCS in the SCS set of the first cell and the minimum SCS in the SCS set of the second cell is not {60 kHz, 60 kHz} or {120 kHz, 120 kHz}:

[0015] The first cell is PCell / PSCell, and the second cell is SCell. If the minimum SCS in the SCS set of the first cell is less than or equal to the minimum SCS in the SCS set of the second cell, Ts 0 of slot 0 of the first cell is aligned with Ts y of slot ((-1*x) mod M) of the second cell; if the minimum SCS in the SCS set of the first cell is greater than the minimum SCS in the SCS set of the second cell, Ts 0 of slot 0 of the first cell is aligned with Ts y of slot (x mod M) of the second cell.

[0016] Alternatively, the first cell is an SCell and the second cell is a PCell / PSCell. If the minimum SCS in the SCS set of the first cell is less than the minimum SCS in the SCS set of the second cell, Ts 0 of slot 0 of the first cell is aligned with Ts y of slot (x mod M) of the second cell; if the minimum SCS in the SCS set of the first cell is greater than or equal to the minimum SCS in the SCS set of the second cell, Ts 0 of slot 0 of the first cell is aligned with Ts y of slot ((-1*x) mod M) of the second cell.

[0017] In certain embodiments of the first aspect, when the combination of the minimum SCS in the SCS set of the first cell and the minimum SCS in the SCS set of the second cell is {60 kHz, 60 kHz} or {120 kHz, 120 kHz}:

[0018] The first cell is PCell / PSCell, and the second cell is SCell. If the frequency domain position of pointA of the first cell is lower than the frequency domain position of pointA of the second cell, Ts 0 of slot 0 of the first cell is aligned with Ts y of slot((-1*x)mod M) of the second cell; if the frequency domain position of pointA of the first cell is higher than the frequency domain position of pointA of the second cell, Ts 0 of slot 0 of the first cell is aligned with Ts y of slot(x mod M) of the second cell.

[0019] Alternatively, the first cell is an SCell and the second cell is a PCell / PSCell. If the frequency domain position of pointA of the first cell is lower than or equal to the frequency domain position of pointA of the second cell, Ts 0 of slot 0 of the first cell is aligned with Ts y of slot(x mod M) of the second cell; if the frequency domain position of pointA of the first cell is higher than the frequency domain position of pointA of the second cell, Ts 0 of slot 0 of the first cell is aligned with Ts y of slot((-1*x)mod M) of the second cell.

[0020] In a second aspect, an embodiment of the present application provides a communication method, which can be executed by a wireless access network device, or by a module (such as a processor, a chip, or a chip system, etc.) applied to the wireless access network device, or by a logical node, a logical module, or software that can implement all or part of the functions of the wireless access network device. The method includes: determining offset indication information, the offset indication information is used to indicate a first offset value x and a second offset value y, the first offset value x is an offset with a time slot as a granularity, and the second offset value y is an offset with a Ts as a granularity, Ts=1 / (15*10 3*2048) seconds, the above offset indication information is used to indicate the time offset between the second cell and the first cell; send the above offset indication information. The first cell is PCell / PSCell, and the second cell is SCell; or, the first cell is SCell, and the second cell is PCell / PSCell. The time offset between the second cell and the first cell indicated by the above offset indication information can be the time offset of the second cell relative to the first cell, or the time offset of the first cell relative to the second cell. The above offset indication information can be carried by RRC signaling. The above time offset can be the time offset between the frame headers of the wireless frame i of the second cell and the wireless frame i of the first cell, where i is a non-negative integer.

[0021] For the beneficial effects of the corresponding features of the second aspect, please refer to the relevant description in the first aspect and no repetition will be given.

[0022] In certain embodiments of the second aspect, the above-mentioned offset indication information includes first indication information and second indication information, the first indication information is used to indicate the first offset value x, and the second indication information is used to indicate the second offset value y, and the above-mentioned offset indication information is used to indicate the time offset between the second cell and the first cell, including: the first indication information and the second indication information are used to indicate the above-mentioned time offset between the second cell and the first cell.

[0023] In certain embodiments of the second aspect, the maximum value of the second offset value y is the number of Ts contained in a slot corresponding to the reference SCS, and the reference SCS is the maximum value of the minimum SCS in the SCS set of the first cell and the minimum SCS in the SCS set of the second cell. The SCS set of the first cell can be understood as multiple SCSs of the first cell, the SCS set of the second cell can be understood as multiple SCSs of the second cell, and the SCS set of the first cell or the SCS set of the second cell can be configured through RRC signaling.

[0024] In certain embodiments of the second aspect, when the combination of the minimum SCS in the SCS set of the first cell and the minimum SCS in the SCS set of the second cell is not {60 kHz, 60 kHz} or {120 kHz, 120 kHz}:

[0025] If the minimum SCS in the SCS set of PCell / PSCell is less than or equal to the minimum SCS in the SCS set of SCell, then Ts 0 of slot 0 of the first cell is aligned with Ts y of slot ((-1*x)mod M) of the second cell, where x is the first offset value, y is the second offset value, mod is the remainder operation, M is the number of slots included in a frame, and the time domain length of the slot is determined based on the above-mentioned reference SCS, where the first cell is PCell / PSCell and the second cell is SCell.

[0026] If the minimum SCS in the SCS set of PCell / PSCell is greater than the minimum SCS in the SCS set of SCell, then Ts 0 of slot 0 of the first cell is aligned with Ts y of slot (x mod M) of the second cell, where the first cell is SCell and the second cell is PCell / PSCell.

[0027] In certain embodiments of the second aspect, when the combination of the minimum SCS in the SCS set of the first cell and the minimum SCS in the SCS set of the second cell is {60 kHz, 60 kHz} or {120 kHz, 120 kHz}:

[0028] If the frequency domain position of pointA of PCell / PSCell is lower than the frequency domain position of pointA of SCell, then Ts 0 of slot 0 of the first cell is aligned with Ts y of slot ((-1*x)mod M) of the second cell, where the first cell is PCell / PSCell and the second cell is SCell.

[0029] If the frequency domain position of pointA of PCell / PSCell is higher than the frequency domain position of pointA of SCell, then Ts 0 of slot 0 of the first cell is aligned with Ts y of slot (x mod M) of the second cell, where the first cell is SCell and the second cell is PCell / PSCell.

[0030] In certain embodiments of the second aspect, when the combination of the minimum SCS in the SCS set of the first cell and the minimum SCS in the SCS set of the second cell is not {60 kHz, 60 kHz} or {120 kHz, 120 kHz}:

[0031] The first cell is PCell / PSCell, and the second cell is SCell. If the minimum SCS in the SCS set of the first cell is less than or equal to the minimum SCS in the SCS set of the second cell, Ts 0 of slot 0 of the first cell is aligned with Ts y of slot ((-1*x) mod M) of the second cell; if the minimum SCS in the SCS set of the first cell is greater than the minimum SCS in the SCS set of the second cell, Ts 0 of slot 0 of the first cell is aligned with Ts y of slot (x mod M) of the second cell.

[0032] Alternatively, the first cell is an SCell and the second cell is a PCell / PSCell. If the minimum SCS in the SCS set of the first cell is less than the minimum SCS in the SCS set of the second cell, Ts 0 of slot 0 of the first cell is aligned with Ts y of slot (x mod M) of the second cell; if the minimum SCS in the SCS set of the first cell is greater than or equal to the minimum SCS in the SCS set of the second cell, Ts 0 of slot 0 of the first cell is aligned with Ts y of slot ((-1*x) mod M) of the second cell.

[0033] In certain embodiments of the second aspect, when the combination of the minimum SCS in the SCS set of the first cell and the minimum SCS in the SCS set of the second cell is {60 kHz, 60 kHz} or {120 kHz, 120 kHz}:

[0034] The first cell is PCell / PSCell, and the second cell is SCell. If the frequency domain position of pointA of the first cell is lower than the frequency domain position of pointA of the second cell, Ts 0 of slot 0 of the first cell is aligned with Ts y of slot((-1*x)mod M) of the second cell; if the frequency domain position of pointA of the first cell is higher than the frequency domain position of pointA of the second cell, Ts 0 of slot 0 of the first cell is aligned with Ts y of slot(x mod M) of the second cell.

[0035] Alternatively, the first cell is an SCell and the second cell is a PCell / PSCell. If the frequency domain position of pointA of the first cell is lower than or equal to the frequency domain position of pointA of the second cell, Ts 0 of slot 0 of the first cell is aligned with Ts y of slot(x mod M) of the second cell; if the frequency domain position of pointA of the first cell is higher than the frequency domain position of pointA of the second cell, Ts 0 of slot 0 of the first cell is aligned with Ts y of slot((-1*x)mod M) of the second cell.

[0036] In a third aspect, an embodiment of the present application provides a device that can implement the method in the first aspect or any possible implementation of the first aspect. The device includes corresponding units or modules for executing the above method. The units or modules included in the device can be implemented by software and / or hardware. The device can be, for example, a terminal, or a chip, a chip system, or a processor that supports the terminal to implement the above method, or a logical node, a logical module, or software that can implement all or part of the terminal functions.

[0037] In a fourth aspect, an embodiment of the present application provides a device that can implement the method in the second aspect or any possible implementation of the second aspect. The device includes a corresponding unit or module for executing the above method. The unit or module included in the device can be implemented by software and / or hardware. The device can be, for example, a wireless access network device, or a chip, a chip system, or a processor that supports the wireless access network device to implement the above method, or a logical node, a logical module, or software that can implement all or part of the functions of the wireless access network device.

[0038] In a fifth aspect, an embodiment of the present application provides a device, comprising: a processor, the processor is coupled to a memory, the memory is used to store instructions, when the instructions are executed by the processor, the device implements the method in the above-mentioned first aspect, or any possible implementation of the first aspect.

[0039] In a sixth aspect, an embodiment of the present application provides a device, comprising: a processor, the processor is coupled to a memory, the memory is used to store instructions, when the instructions are executed by the processor, the device implements the method in the above-mentioned second aspect, or any possible implementation of the second aspect.

[0040] In the seventh aspect, an embodiment of the present application provides a computer-readable storage medium having instructions stored thereon. When the instructions are executed by a communication device, the communication device executes the method in the above-mentioned first aspect or any possible implementation of the first aspect, or executes the above-mentioned second aspect or any possible implementation of the second aspect.

[0041] In an eighth aspect, an embodiment of the present application provides a computer program product, comprising a computer program code. When the computer program code runs on a communication device, the communication device executes the method in the above-mentioned first aspect, or any possible implementation of the first aspect, or executes the above-mentioned second aspect, or any possible implementation of the second aspect.

[0042] In the ninth aspect, an embodiment of the present application provides a chip, comprising: a processor, the processor is coupled to a memory, the memory is used to store instructions, when the instructions are executed by the processor, the chip implements the method in the above-mentioned first aspect, the second aspect, any possible implementation of the first aspect, or any possible implementation of the second aspect.

[0043] In the tenth aspect, an embodiment of the present application provides a communication system, including the device of the third aspect and the device of the fourth aspect, or including the device of the fifth aspect and the device of the sixth aspect.

[0044] It can be understood that for the beneficial effects of the features corresponding to the first and second aspects in the third to tenth aspects, please refer to the relevant descriptions in the first and second aspects and no repetition will be given. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 A schematic diagram of a communication system used in the embodiments provided in this application;

[0046] Figure 2 A schematic diagram indicating the slot-level offset between multiple cells for a CA scenario;

[0047] Figure 3 A schematic diagram of a communication method provided in an embodiment of the present application;

[0048] Figure 4 A schematic diagram of the structure of a terminal provided in an embodiment of the present application;

[0049] Figure 5 A schematic diagram of the structure of a device provided in an embodiment of the present application;

[0050] Figure 6 A schematic diagram of another device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0051] Figure 1 Schematic diagram of the architecture of the communication system used in the embodiment of the present application. Figure 1 As shown, the above communication system includes a radio access network (RAN) 100 and a core network (CN) 130. Optionally, the communication system may also include the Internet 140. The RAN 100 may include at least one RAN node (such as Figure 1 110a and 110b, collectively referred to as 110) and at least one terminal (such as Figure 1120a-120j in the RAN 100 are collectively referred to as 120). RAN 100 may also include other RAN nodes. Terminal 120 is connected to RAN node 110 wirelessly. RAN node 110 is connected to core network 130 wirelessly or by wire. The core network device in core network 130 and RAN node 110 in RAN 100 may be independent and different physical devices, or may be the same physical device integrating core network logical functions and radio access network logical functions, or may be a device integrating part of core network logical functions and part of radio access network logical functions. Terminals and RAN nodes may be connected to each other by wire or wirelessly. Figure 1 This is just a schematic diagram. The communication system may also include other network devices, such as relay devices and backhaul devices. Figure 1 Not drawn in.

[0052] The method and apparatus provided in the embodiments of the present application can be used in various communication systems, such as a fourth generation (4G) communication system, a 4.5G communication system, a 5G communication system, a 5.5G communication system, a 6G communication system, a system integrating multiple communication systems, or a communication system evolving in the future. For example, a long term evolution (LTE) system, a new radio (NR) system, an open access network (open RAN, O-RAN or ORAN) system, a cloud radio access network (CRAN) system, and a communication system related to the third generation partnership project (3GPP), as well as other such communication systems, can also be a communication system integrating two or more of the above systems.

[0053] RAN nodes can also be expressed in different ways, such as radio access network devices. In this application, unless otherwise specified, radio access network devices are used for expression. Radio access network devices (sometimes also referred to as network devices in this application) can be base stations, evolved base stations (evolved NodeB, eNodeB), transmission reception points (transmission reception points, TRP), next generation base stations (next generation NodeB, gNB) in 5G mobile communication systems, next generation base stations in 6G mobile communication systems, or base stations in future mobile communication systems, etc. Radio access network devices can be macro base stations (such as Figure 1 110a), or a micro base station or an indoor station (such as Figure 1110b), it can also be a relay node or a donor node, or a wireless controller in a CRAN scenario. Optionally, the wireless access network device can also be a server, a wearable device, a vehicle or a vehicle-mounted device, etc. For example, the access network device in the vehicle to everything (V2X) technology can be a road side unit (RSU). It can be understood that all or part of the functions of the wireless access network device in the present application can also be implemented by software functions running on hardware, or by virtualization functions instantiated on a platform (such as a cloud platform). The wireless access network device in the present application can also be a logical node, a logical module or software that can implement all or part of the functions of the wireless access network device.

[0054] The radio access network device may also be a module or unit that completes part of the functions of the base station, for example, it may be a centralized unit (CU) or a distributed unit (DU). In another possible scenario, multiple radio access network devices collaborate to assist the terminal in achieving wireless access, and different radio access network devices respectively implement part of the functions of the base station. For example, the radio access network device may be a CU, a DU, a CU-control plane (CP), a CU-user plane (UP), or a radio unit (RU). The CU and the DU may be separately configured, or may be included in the same network element, such as a baseband unit (BBU). The RU may be included in a radio frequency device or a radio frequency unit, such as a remote radio unit (RRU), an active antenna unit (AAU), or a remote radio head (RRH).

[0055] In different systems, CU (or CU-CP and CU-UP), DU or RU may also have different names, but those skilled in the art can understand their meanings. For example, in the ORAN system, CU may also be called an open central unit (O-CU), DU may also be called an open distributed unit (O-DU), CU-CP may also be called O-CU-CP, CU-UP may also be called O-CU-UP, and RU may also be called O-RU. For the convenience of description, DU and RU are used as examples in this application. Any unit in DU and RU in this application may be implemented by a software module, a hardware module, or a combination of a software module and a hardware module. The embodiments of the present application do not limit the specific technology and specific equipment form adopted by the wireless access network device. For the convenience of description, the following description takes the base station as an example of a wireless access network device.

[0056] The terminal may also be referred to as a terminal device, user equipment (UE), mobile station, mobile terminal, etc. The terminal can be widely used in various scenarios, for example, device-to-device (D2D), vehicle-to-everything (V2X) communication, machine-type communication (MTC), Internet of Things (IoT), virtual reality, augmented reality, industrial control, autonomous driving, telemedicine, smart grid, smart furniture, smart office, smart wear, smart transportation, smart city, etc. The terminal may be a mobile phone, a tablet computer, a computer with wireless transceiver function, a wearable device, a vehicle, a drone, a helicopter, an airplane, a ship, a robot, a robotic arm, a smart home device, etc. The embodiments of the present application do not limit the specific technology and specific device form adopted by the terminal.

[0057] The terminal in this application may also be a VR terminal, an AR terminal, or an MR terminal. VR terminals, AR terminals, and MR terminals may all be referred to as XR terminals. An XR terminal may be, for example, a head-mounted device (such as a helmet or glasses), an all-in-one machine, a TV, a display, a car, a vehicle-mounted device, a tablet or a smart screen, etc. The XR terminal can present XR data to the user, and the user can experience a variety of XR services by wearing or using the XR terminal. The XR terminal can access the network wirelessly or wired, for example, through WiFi, 5G or other systems.

[0058] Base stations and terminals can be fixed or movable. Base stations and terminals can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; they can also be deployed on the water surface; they can also be deployed on aircraft, balloons, and artificial satellites in the air. The embodiments of this application do not limit the application scenarios of base stations and terminals.

[0059] The roles of the base station and the terminal can be relative, for example, Figure 1 The aircraft or drone 120i in the figure can be configured as a mobile base station. For the terminal 120j that accesses the wireless access network 100 through 120i, the terminal 120i is a base station; but for the base station 110a, 120i is a terminal, that is, 110a and 120i communicate through the wireless air interface protocol. Of course, 110a and 120i can also communicate through the interface protocol between base stations. In this case, relative to 110a, 120i is also a base station. Therefore, base stations and terminals can be collectively referred to as communication devices. Figure 1 110a and 110b in the figure may be referred to as communication devices having base station functions. Figure 1 120a-120j in the figure can be called communication devices with terminal functions.

[0060] Base stations and terminals, base stations and base stations, and terminals and terminals can communicate through authorized spectrum, unauthorized spectrum, or both; they can communicate through spectrum below 6 gigahertz (GHz), spectrum above 6 GHz, or spectrum below 6 GHz and spectrum above 6 GHz. The embodiments of the present application do not limit the spectrum resources used for wireless communication.

[0061] In the embodiments of the present application, the functions of the base station may also be performed by a module (such as a chip) in the base station, or by a control subsystem including the base station function. The control subsystem including the base station function here may be a control center in the application scenarios of the above-mentioned terminals such as smart grid, industrial control, smart transportation, smart city, etc. The functions of the terminal may also be performed by a module (such as a chip or a modem) in the terminal, or by a device including the terminal function.

[0062] In this application, the base station sends a downlink signal or downlink information to the terminal, and the downlink information is carried on the downlink channel; the terminal sends an uplink signal or uplink information to the base station, and the uplink information is carried on the uplink channel; the terminal sends a sidelink signal or sidelink information to the terminal, and the sidelink information is carried on the sidelink channel. Among them, the information can be control information or data information.

[0063] A cell is an area of ​​wireless coverage identified by a base station identification code or a global cell identification code. It can be simply understood that a cell is an area where a base station provides wireless coverage. For example, in the NR system, a terminal is connected to a cell, which can be understood as the service cell of the terminal. The terminal uses the resources provided by the cell to achieve data transmission with the wireless access network equipment. The resources may include one or more of time domain resources, frequency domain resources or spatial domain resources. A carrier is a radio signal (such as an electromagnetic wave) with a specific frequency, bandwidth, and format emitted by a base station to carry information. It can also be called CC or carrier frequency.

[0064] With the continuous emergence of new services such as high-definition video, AR / VR, etc., the demand for wireless data traffic is growing rapidly. In order to meet the growing demand for wireless transmission, wireless communication technology needs to evolve further to improve the network capacity and transmission rate of wireless networks. In the evolution direction of wireless communication technology, further exploring the frequency resources of wireless communication is an extremely important dimension. Larger transmission bandwidth can provide greater network capacity and higher transmission rate. Limited by the actual deployed spectrum bandwidth resources and the processing power of the terminal, large-bandwidth continuous spectrum resources are very scarce, that is, the bandwidth of a single carrier is limited.

[0065] CA technology is a key technology to solve the problem of limited bandwidth of a single carrier. It aggregates two or more CCs to serve terminal devices to support larger transmission bandwidth. CA technology can integrate multi-frequency domain resources and aggregate frequency domain resources of the same or different frequency bands for terminal use, thereby improving resource utilization of the entire network and improving user experience.

[0066] In the CA scenario, the terminal can connect to multiple cells, including a primary cell (PCell) and a secondary cell (SCell). PCell can be a cell established for initial access between the terminal and the radio access network device, or a cell rebuilt by the terminal and the radio access network device for RRC connection, or a cell specified during the switching operation. SCell is a cell configured by the radio access network device to the terminal to provide additional transmission resources. SCell can be a cell added during RRC reconfiguration. The CA scenario can also include a primary secondary cell group cell (PSCell), which is a secondary cell group cell that the terminal randomly accesses when performing a synchronous reconfiguration process when the terminal is configured for dual connection. Each downlink carrier corresponds to an independent cell, which can also be understood as a cell containing only one downlink carrier, and a downlink carrier can usually be equated with a cell. A cell can contain only one downlink carrier, one downlink carrier and one uplink carrier, or one downlink carrier and two uplink carriers. In this application, if the logic does not conflict, cells, carriers and CCs can be used interchangeably.

[0067] CA technology supports the scenario where frames between multiple carriers of carrier aggregation are not aligned. In this scenario, the wireless access network device can indicate the time slot offset of cell A serving the terminal relative to cell B serving the terminal by sending offset indication information. For example Figure 2As shown, cells 0-4 are service cells for the terminal, the SCS of cell 0 is 30kHz, and one frame contains 20 slots; the SCS of cells 1-4 is 60kHz, and one frame contains 40 slots respectively. The frame i of the above cells 1-4 is not aligned with the frame i of the above cell 0, where i is a non-negative integer. The wireless access network device indicates that slot 0 in frame i+1 of cell 0 is aligned with slot 39 in frame i of cell 4 by sending offset indication information, which can also be understood as slot 0 in frame i+1 of cell 4 is delayed by 1 slot corresponding to SCS 60kHz relative to slot 0 in frame i+1 of cell 0; the wireless access network device indicates that slot 0 in frame i+1 of cell 0 is aligned with slot 38 in frame i of cell 3 by sending offset indication information, which can also be understood as slot 0 in frame i+1 of cell 3 is delayed by 2 slots corresponding to SCS 60kHz relative to slot 0 in frame i+1 of cell 0; the wireless access network device indicates that slot 0 in frame i+1 of cell 0 is aligned with slot 1 in frame i+1 of cell 2 by sending offset indication information, which can also be understood as slot 0 in frame i+1 of cell 2 is delayed by 2 slots corresponding to SCS 60kHz. 0 is one slot corresponding to 60kHz SCS ahead of slot 0 in frame i+1 of cell 0; the wireless access network device indicates that slot 0 in frame i+1 of cell 0 is aligned with slot 2 in frame i+1 of cell 1 by sending offset indication information, which can also be understood as slot 0 in frame i+1 of cell 1 is two slots corresponding to 60kHz SCS ahead of slot 0 in frame i+1 of cell 0. In this application, if there is no special explanation, i in slot i, frame i or Ts i is the sequence number or index corresponding to slot, frame or Ts, i is a non-negative integer, Ts=1 / (15*10 3 *2048) seconds.

[0068] Currently, wireless access network equipment only supports indicating the slot-level offset of cell A serving a terminal relative to cell B serving the terminal. When the offset of cell A relative to cell B is not an integer multiple of the slot, the wireless access network equipment cannot correctly indicate the time offset of cell A relative to cell B. Accordingly, the terminal cannot correctly obtain the time offset of cell A serving it relative to cell B serving it, which leads to data transmission errors and affects communication performance. The communication performance in the CA scenario is closely related to the alignment of frames between multiple carriers or cells supporting CA. Therefore, how to determine the timing between multiple carriers or multiple cells in the CA scenario is an urgent problem to be solved.

[0069] The present application provides a method for determining cell timing, wherein a base station indicates to a UE an offset with a time slot as a granularity and a time slot as a granularity.3 *2048) seconds) as the granularity of the offset indication information, so that the UE can obtain the time offset between cells in the CA scenario, effectively alleviating the problem of communication performance degradation caused by frame misalignment between multiple cells supported by CA, and achieving the beneficial effect of improving communication performance.

[0070] Figure 3 An interactive schematic diagram of a communication method 300 provided in an embodiment of the present application. Figure 3 In the example, the wireless access network device and the terminal are used as the execution subjects of the interaction, but the present application does not limit the execution subjects of the interaction. Figure 3 The wireless access network device in the wireless access network device may also be a module (such as a chip, a chip system, or a processor) applied to the wireless access network device, or may be a logical node, a logical module, or software that can realize all or part of the functions of the wireless access network device; Figure 3 The terminal in the example may also be a module (such as a chip, a chip system, or a processor) applied to the terminal, or a logical node, a logical module, or software that can implement all or part of the terminal functions. Figure 3 As shown, the method 300 of this embodiment may include part 310 , part 320 , and part 330 .

[0071] Part 310: The wireless access network device determines the offset indication information, where the offset indication information is used to indicate a first offset value x and a second offset value y, where the first offset value x is an offset with a slot as the granularity, and the second offset value y is an offset with a Ts as the granularity, where Ts=1 / (15*10 3 *2048) seconds, and the above offset indication information is used to indicate the time offset between the second cell and the first cell. The first cell is a primary cell (PCell) or a primary secondary cell (PSCell), and the second cell is a secondary cell (SCell); or, the first cell is an SCell and the second cell is a PCell / PSCell. It can also be understood that one of the first cell and the second cell is a PCell / PSCell, and the other cell is an SCell. The time offset between the second cell and the first cell indicated by the above offset indication information can be the time offset of the second cell relative to the first cell, or the time offset of the first cell relative to the second cell. The above time offset can be the time offset between the frame headers of the wireless frame i of the second cell and the wireless frame i of the first cell, where i is a non-negative integer.

[0072] Part 320: The radio access network device sends the above-mentioned offset indication information to the terminal, and correspondingly, the terminal receives the above-mentioned offset indication information from the radio access network device. The above-mentioned offset indication information may be carried by RRC signaling.

[0073] Part 330: The terminal determines the time offset between the second cell and the first cell according to the above offset indication information.

[0074] In method 300, the terminal receives offset indication information for indicating the time offset between the second cell and the first cell, and the offset indication information indicates a first offset value with slot as the granularity and a second offset value with Ts as the granularity, and the offset indication information accurately indicates the time offset between the second cell and the first cell with slot as the granularity and Ts as the granularity, Ts=1 / (15*10 3 *2048) seconds, which can effectively solve the problem of communication performance degradation caused by frame misalignment between the second cell and the first cell.

[0075] In this application, "sending information to...(terminal)" can be understood as the destination of the information is the terminal. It can include sending information to the terminal directly or indirectly. "Receiving information...from (radio access network device)" can be understood as the source of the information is the radio access network device, which can include receiving information from the radio access network device directly or indirectly. The information may be processed as necessary between the source and destination of the information, such as format changes, but the destination can understand the valid information from the source. Similar expressions in this application can be understood similarly and will not be repeated here.

[0076] The above offset indication information may include first indication information and second indication information, the first indication information is used to indicate the first offset value x, and the second indication information is used to indicate the second offset value y. Further, the terminal may determine the time offset between the second cell and the first cell according to the first indication information and the second indication information.

[0077] In a possible implementation, the maximum value of the second offset value y is the number of Ts contained in a slot corresponding to the reference SCS, and the reference SCS is the maximum value of the minimum SCS in the SCS set of the first cell and the minimum SCS in the SCS set of the second cell. The SCS set of the first cell can be understood as multiple SCSs configured for the first cell, and the SCS set of the second cell can be understood as multiple SCSs configured for the second cell. Among them, the SCS set of the first cell or the SCS set of the second cell can be configured through RRC signaling, and a possible cell structure is as follows:

[0078]

[0079] Among them, the cell scs-SpecificCarrierList is used to configure the SCS set, the cell SubcarrierSpacing in the cell SCS-SpecificCarrier is used to configure an SCS in the SCS set, the minimum value of the number of cells SCS-SpecificCarrier contained in the cell scs-SpecificCarrierList is 1, and the maximum value is maxSCSs. It can also be understood that the minimum value of the number of SCSs contained in the SCS set is 1, and the maximum value is maxSCSs, and maxSCSs can be 5.

[0080] Optionally, different slots corresponding to the above-mentioned reference SCS (for example, slot i corresponding to the reference SCS and slot j corresponding to the reference SCS, i and j are integers, and i is not equal to j) may contain different numbers of Ts. For example, the slot corresponding to the reference SCS of 60kHz may contain 7688 Ts or 7672 Ts. At this time, a slot corresponding to the reference SCS is a slot including 7688 Ts, that is, a slot corresponding to the reference SCS is the slot containing the largest number of Ts among the slots corresponding to the reference SCS.

[0081] For example, the SCS set of the first cell is {30kHz, 60kHz}, the SCS set of the second cell is {60kHz, 120kHz}, and the reference SCS is the minimum value 30kHz in the SCS set {30kHz, 60kHz} and the maximum value 60kHz in the minimum value 60kHz in the SCS set {60kHz, 120kHz}. Then the maximum value of the second offset value y is the number of Ts contained in the slot with the largest number of Ts in the slot corresponding to the reference SCS of 60kHz.

[0082] The first indication information and the second indication information may be carried by RRC signaling. A possible cell structure is as follows:

[0083]

[0084] The first indication information may be a Slotoffset cell, which is included in the ca-SlotOffset-r19 cell; the second indication information may be a Tsoffset cell, which is also included in the ca-SlotOffset-r19 cell. refSCS15kHz, refSCS30kHz, refSCS60kHz and refSCS120kHz represent cells corresponding to reference SCSs of 15kHz, 30kHz, 60kHz and 120kHz, respectively, and the cells include the first indication information and the second indication information. The number of Ts contained in a slot corresponding to the above reference SCSs of 15kHz, 30kHz, 60kHz and 120kHz is 30719, 15359, 7687 and 3851, respectively. For the reference SCS of 15kHz, the first indication information Slotoffset is INTEGER (-2..2), which can also be understood as the first indication information Slotoffset indicating an integer between -2 and 2 (including -2 and 2); the second indication information Tsoffset is INTERGER (0..30719), which can also be understood as the second indication information Tsoffset indicating an integer between 0 and 30719 (including 0 and 30719). The case where the reference SCS is 30kHz, 60kHz and 120kHz is similar and will not be elaborated here. It can be understood that the specific parameter names illustrated in this application are only used as examples, and the parameter names involved are not limited.

[0085] In a possible implementation manner, when the combination of the minimum SCS in the SCS set of the first cell and the minimum SCS in the SCS set of the second cell is not {60kHz, 60kHz} or {120kHz, 120kHz}:

[0086] If the minimum SCS in the SCS set of the PCell / PSCell is less than or equal to the minimum SCS in the SCS set of the SCell, then Ts 0 of slot 0 of the first cell is aligned with Ts y of slot ((-1*x)mod M) of the second cell, where x is the first offset value, y is the second offset value, mod is the remainder operation, M is the number of slots included in a frame, and the time domain length of the slot is determined based on the above-mentioned reference SCS. The first cell is the PCell / PSCell, and the second cell is the SCell. It can also be understood that if the first cell is the PCell / PSCell, the second cell is the SCell, and the minimum SCS in the SCS set of the first cell is less than or equal to the minimum SCS in the SCS set of the second cell, then Ts 0 of slot 0 of the first cell is aligned with Ts y of slot ((-1*x)mod M) of the second cell.

[0087] If the minimum SCS in the SCS set of the PCell / PSCell is greater than the minimum SCS in the SCS set of the SCell, then Ts 0 of slot 0 of the first cell is aligned with Ts y of slot (x mod M) of the second cell, where the first cell is the SCell and the second cell is the PCell / PSCell. It can also be understood that if the first cell is the SCell, the second cell is the PCell / PSCell, and the minimum SCS in the SCS set of the second cell is greater than the minimum SCS in the SCS set of the first cell, then Ts 0 of slot 0 of the first cell is aligned with Ts y of slot (x mod M) of the second cell.

[0088] For example, the first cell is PCell, the second cell is SCell, the minimum SCS in the SCS set of the first cell is 30kHz, the minimum SCS in the SCS set of the second cell is 120kHz, the time offset of the second cell relative to the first cell is 2.3ms, the first offset value with slot granularity indicated by the above offset indication information carried on the RRC signaling is 18, the second offset value with Ts granularity indicated by the above offset indication information carried on the RRC signaling is 1528, and Ts 0 of slot 0 of the first cell is aligned with Ts 1528 of slot 18 of the second cell.

[0089] In another possible implementation, when the combination of the minimum SCS in the SCS set of the first cell and the minimum SCS in the SCS set of the second cell is {60kHz, 60kHz} or {120kHz, 120kHz}:

[0090] If the frequency domain position of pointA of the above PCell / PSCell is lower than the frequency domain position of pointA of SCell, then Ts 0 of slot 0 of the first cell is aligned with Ts y of slot ((-1*x) mod M) of the second cell, and the above pointA is a common reference point of the resource block grid, which is aligned with the center position of subcarrier 0 of common resource block 0 corresponding to the configured SCS, wherein the first cell is PCell / PSCell and the second cell is SCell. It can also be understood that if the first cell is PCell / PSCell, the second cell is SCell, and the frequency domain position of pointA of the first cell is lower than the frequency domain position of pointA of the second cell, then Ts 0 of slot 0 of the first cell is aligned with Ts y of slot ((-1*x) mod M) of the second cell. For a more detailed description of Point A, please refer to Section 4.4.4.2 of 3GPP Technical Specification (TS) 38.211V17.5.0.

[0091] If the frequency domain position of pointA of the PCell / PSCell is higher than the frequency domain position of pointA of the SCell, then Ts 0 of slot 0 of the first cell is aligned with Ts y of slot (x mod M) of the second cell, where the first cell is the SCell and the second cell is the PCell / PSCell. It can also be understood that if the first cell is the SCell and the second cell is the PCell / PSCell, and the frequency domain position of pointA of the second cell is higher than the frequency domain position of pointA of the first cell, then Ts 0 of slot 0 of the first cell is aligned with Ts y of slot (x mod M) of the second cell.

[0092] Optionally, the second offset value in the present application may also be a time domain offset with Tc as the granularity, where Tc=Ts / 64, Ts=1 / (15*10 3 *2048) seconds.

[0093] The present application provides a method for determining cell timing, the method comprising: a wireless access network device determines second offset indication information, the second offset indication information is used to indicate a third offset value and a fourth offset value, the third offset value is an offset with a slot as a granularity, the fourth offset value is an offset with a Ts as a granularity, Ts=1 / (15*10 3*2048) seconds, the second offset indication information is used to indicate the time offset between the third cell and the fourth cell. The fourth cell is a PCell / PSCell, and the third cell is an SCell; or, the fourth cell is an SCell, and the third cell is a PCell / PSCell. It can also be understood that one of the third cell and the fourth cell is a PCell / PSCell, and the other cell is an SCell. The time offset between the third cell and the fourth cell indicated by the second offset indication information can be the time offset of the third cell relative to the fourth cell, or the time offset of the fourth cell relative to the third cell. The time offset can be the time offset between the frame headers of the wireless frame i of the third cell and the wireless frame i of the fourth cell, where i is a non-negative integer; the wireless access network device sends the second offset indication information to the terminal; the terminal determines the time offset between the third cell and the fourth cell according to the second offset indication information.

[0094] The method also includes: the wireless access network device determines third offset indication information, the third offset indication information is used to indicate the fifth offset value and the sixth offset value, the fifth offset value is an offset with slot as the granularity, the sixth offset value is an offset with Ts as the granularity, and the third offset indication information is used to indicate the time offset between the fifth cell and the sixth cell. The sixth cell is a PCell / PSCell, and the fifth cell is an SCell; or, the sixth cell is an SCell, and the fifth cell is a PCell / PSCell. It can also be understood that one of the fifth cell and the sixth cell is a PCell / PSCell, and the other cell is an SCell. The time offset between the fifth cell and the sixth cell indicated by the third offset indication information can be the time offset of the fifth cell relative to the sixth cell, or the time offset of the sixth cell relative to the fifth cell. The time offset can be the time offset between the frame headers of the wireless frame i of the fifth cell and the wireless frame i of the sixth cell, i being a non-negative integer; the wireless access network device sends the third offset indication information to the terminal; the terminal determines the time offset between the fifth cell and the sixth cell according to the third offset indication information. Two of the third cell, the fourth cell, the fifth cell and the sixth cell are the same and are PCell / PSCell.

[0095] In a possible implementation, the index K of the time slot for sending the physical downlink shared channel (PDSCH) on the third cell is determined according to the fifth offset value, the sixth offset value, the third offset value, and the fourth offset value. s , the above time slot index K s satisfy:

[0096]

[0097] Wherein, n is the time slot index of the physical downlink control channel (PDCCH) carrying downlink control information (DCI), and the above PDCCH is sent on the fifth cell, μ PDSCH is the SCS index of the PDSCH, the PDSCH scheduled by the DCI is sent on the third cell, μ PDCCH is the SCS index of the PDCCH, K0 is the number of time slots between the PDCCH and the PDSCH with the SCS corresponding to the PDSCH as a reference, is the fifth offset value, is the third offset value, μ offset,PDCCH is the maximum value of the minimum SCS in the SCS set of the sixth cell and the minimum SCS in the SCS set of the fifth cell, μ offset,PDSCH is the maximum value of the minimum SCS in the SCS set of the fourth cell and the minimum SCS in the SCS set of the third cell, N Ts,offset,PDCCH is the sixth offset value, N Ts,offset,PDSCH is a fourth offset value, T is the number of Ts contained in the slot with the maximum length in the slot corresponding to the SCS of the above PDSCH or the number of Ts contained in the slot with the minimum length in the slot corresponding to the SCS of the above PDSCH, represents the rounding down operation, and |·| represents the absolute value operation.

[0098] Optionally, in the above embodiment Can also be replaced by Indicates rounding up.

[0099] In a possible implementation manner, the index K of the time slot for sending a channel state information reference signal (CSI-RS) on the third cell is determined according to the fifth offset value, the sixth offset value, the third offset value, and the fourth offset value. s , the above time slot index K s satisfy:

[0100]

[0101] Where n is the timeslot index of the PDCCH carrying the DCI, the PDCCH is sent on the fifth cell, μ CSIRS is the SCS index of the CSI-RS, the CSI-RS triggered by the DCI is sent on the third cell, μ PDCCHis the SCS index of the PDCCH, X is the number of time slots between the PDCCH and the CSI-RS with the SCS corresponding to the CSI-RS as a reference, is the fifth offset value, is the third offset value, μ offset,PDCCH is the maximum value of the minimum SCS in the SCS set of the sixth cell and the minimum SCS in the SCS set of the fifth cell, μ offset,CSIRS is the maximum value of the minimum SCS in the SCS set of the fourth cell and the minimum SCS in the SCS set of the third cell, N Ts,offset,PDCCH is the sixth offset value, N Ts,offset,CSIRS is a fourth offset value, T is the number of Ts contained in the slot with the maximum length in the slot corresponding to the SCS of the CSI-RS or the number of Ts contained in the slot with the minimum length in the slot corresponding to the SCS of the CSI-RS, represents the rounding down operation, and |·| represents the absolute value operation.

[0102] Optionally, in the above embodiment Can also be replaced by Indicates rounding up.

[0103] In a possible implementation, the index K of the time slot for sending the physical uplink shared channel (PUSCH) on the third cell is determined according to the fifth offset value, the sixth offset value, the third offset value, and the fourth offset value. s , the above time slot index K s satisfy:

[0104]

[0105] Where n is the timeslot index of the PDCCH carrying the DCI, the PDCCH is sent on the fifth cell, μ PUSCH is the SCS index of the PUSCH, the PUSCH scheduled by the DCI is sent on the third cell, μ PDCCH is the SCS index of the PDCCH, K2 is the number of time slots between the PDCCH and the PUSCH with the SCS corresponding to the PUSCH as a reference, is the fifth offset value, is the third offset value, μ offset,PDCCH is the maximum value of the minimum SCS in the SCS set of the sixth cell and the minimum SCS in the SCS set of the fifth cell, μ offset,PUSCH is the maximum value of the minimum SCS in the SCS set of the fourth cell and the minimum SCS in the SCS set of the third cell, N Ts,offset,PDCCHis the sixth offset value, N Ts,offset,PUSCH is a fourth offset value, T is the number of Ts contained in the slot with the maximum length in the slot corresponding to the SCS of the PUSCH or the number of Ts contained in the slot with the minimum length in the slot corresponding to the SCS of the PUSCH, represents the rounding down operation, and |·| represents the absolute value operation.

[0106] Optionally, in the above embodiment Can also be replaced by Indicates rounding up.

[0107] In a possible implementation manner, the time slot index K for sending a channel sounding reference signal (SRS) on the third cell is determined according to the fifth offset value, the sixth offset value, the third offset value, and the fourth offset value. s , the index K of the above time slot s satisfy:

[0108]

[0109] Where n is the timeslot index of the PDCCH carrying the DCI, the PDCCH is sent on the fifth cell, μ SRS is the SCS index of the SRS, the SRS triggered by the DCI is sent on the third cell, μ PDCCH is the SCS index of the PDCCH, k is the number of time slots between the PDCCH and the SRS with the SCS corresponding to the SRS as a reference, is the fifth offset value, is the third offset value, μ offset,PDCCH is the maximum value of the minimum SCS in the SCS set of the sixth cell and the minimum SCS in the SCS set of the fifth cell, μ offset,SRS is the maximum value of the minimum SCS in the SCS set of the fourth cell and the minimum SCS in the SCS set of the third cell, N Ts,offset,PDCCH is the sixth offset value, N TsoffsetSRS is a fourth offset value, T is the number of Ts contained in the slot with the maximum length in the slot corresponding to the SCS of the SRS or the number of Ts contained in the slot with the minimum length in the slot corresponding to the SCS of the SRS, represents the rounding down operation, and |·| represents the absolute value operation.

[0110] Optionally, in the above embodiment Can also be replaced by Indicates rounding up.

[0111] It can be understood that the embodiments of the present application are not limited to the CA scenario, and other scenarios (such as scenarios with multiple carriers or multiple cells) are also applicable.

[0112] Corresponding to the method provided in the above method embodiment, the present application embodiment also provides a corresponding device, including a module for executing the corresponding module of the above embodiment. The module can be software, hardware, or a combination of software and hardware.

[0113] Figure 4 A schematic diagram of the structure of a terminal is provided. The terminal can be applied to Figure 1 In the scenario shown. The terminal or a module in the terminal can execute the aforementioned method 300 and various possible implementations. For ease of description, Figure 4 Only the main modules of the terminal are shown. Figure 4 As shown, the terminal 400 includes a processor, a memory, a control circuit, an antenna, and an input-output device. The processor is mainly used to process the communication protocol and communication data, and to control the entire terminal, execute the software program, and process the data of the software program. The memory is mainly used to store the software program and data. The radio frequency circuit is mainly used for converting the baseband signal and the radio frequency signal and processing the radio frequency signal. The antenna is mainly used to send and receive radio frequency signals in the form of electromagnetic waves. The input-output device, such as a touch screen, a display screen, a keyboard, etc., is mainly used to receive data input by the user and output data to the user.

[0114] When the terminal is turned on, the processor can read the software program in the storage unit, parse and execute the instructions of the software program, and process the data of the software program. When data needs to be sent wirelessly, the processor performs baseband processing on the data to be sent, and outputs the baseband signal to the RF circuit. The RF circuit processes the baseband signal to obtain the RF signal and sends the RF signal outward in the form of electromagnetic waves through the antenna. When data is sent to the terminal, the RF circuit receives the RF signal through the antenna, and the RF signal is further converted into a baseband signal, and the baseband signal is output to the processor, and the processor converts the baseband signal into data and processes the data.

[0115] For ease of explanation, Figure 4 Only one memory and processor are shown. In an actual terminal, there may be multiple processors and memories. The memory may also be referred to as a storage medium or a storage device, etc., which is not limited in the embodiments of the present application.

[0116] As an optional implementation, the processor may include a baseband processor and a central processing unit. The baseband processor is mainly used to process the communication protocol and communication data, and the central processing unit is mainly used to control the entire terminal device, execute software programs, and process software program data. Figure 4 The processor in the integrated baseband processor and the central processor functions, those skilled in the art will appreciate that the baseband processor and the central processor may also be independent processors, interconnected by bus and other technologies. Those skilled in the art will appreciate that the terminal may include multiple baseband processors to adapt to different network formats, the terminal may include multiple central processors to enhance its processing capabilities, and the various modules of the terminal may be connected through various buses. The baseband processor may also be described as a baseband processing circuit or a baseband processing chip. The central processor may also be described as a central processing circuit or a central processing chip. The function of processing the communication protocol and the communication data may be built into the processor, or may be stored in the storage unit in the form of a software program, and the processor executes the software program to implement the baseband processing function.

[0117] In one example, the antenna and control circuit having transceiver functions may be regarded as the transceiver unit 411 of the terminal 400, and the processor having a processing function may be regarded as the processing unit 412 of the terminal 400. Figure 4 As shown, the terminal 400 includes a transceiver unit 411 and a processing unit 412. The transceiver unit may also be referred to as a transceiver, a transceiver, a transceiver device, etc. Optionally, the device used to implement the receiving function in the transceiver unit 411 may be regarded as a receiving unit, and the device used to implement the sending function in the transceiver unit 411 may be regarded as a sending unit, that is, the transceiver unit 411 includes a receiving unit and a sending unit. Exemplarily, the receiving unit may also be referred to as a receiver, a receiver, a receiving circuit, etc., and the sending unit may be referred to as a transmitter, a transmitter, or a transmitting circuit, etc. Optionally, the above-mentioned receiving unit and the sending unit may be one integrated unit, or may be multiple independent units. The above-mentioned receiving unit and the sending unit may be located in one geographical location, or may be dispersed in multiple geographical locations.

[0118] like Figure 5 As shown, another embodiment of the present application provides a device 500. The device may be a terminal, or a module applied to a terminal (e.g., an integrated circuit, a chip, etc.). Alternatively, the device may be a wireless access network device, or a module applied to a wireless access network device (e.g., an integrated circuit, a chip, etc.), or a logical node, a logical module, or software that can implement all or part of the functions of the wireless access network device. The device may also be other communication modules. For example, the device 500 may implement the functions of the wireless access network device in the method 300 and various possible implementations, or the device 500 may implement the functions of the terminal in the method 300 and various possible implementations. The device 500 may include: an interface module 501 (or referred to as an interface unit) and a processing module 502 (or referred to as a processing unit), and may also include a storage module 503 (or referred to as a storage unit).

[0119] In one possible design, Figure 5 One or more modules in the may be implemented by one or more processors, or by one or more processors and memories; or by one or more processors and transceivers; or by one or more processors, memories and transceivers, which are not limited in the embodiments of the present application. The processor, memory, and transceiver may be provided separately or integrated.

[0120] The device has the function of implementing the terminal described in the embodiment of the present application. For example, the device includes a module or unit or means corresponding to the steps involved in the terminal described in the embodiment of the present application. The function or unit or means can be implemented by software, or by hardware, or by hardware executing the corresponding software implementation, or by a combination of software and hardware. For a detailed description, please refer to the corresponding description in the aforementioned corresponding method embodiment. Alternatively, the device has the function of implementing the wireless access network device described in the embodiment of the present application. For example, the device includes a module or unit or means corresponding to the steps involved in the wireless access network device described in the embodiment of the present application. The function or unit or means can be implemented by software, or by hardware, or by hardware executing the corresponding software implementation, or by a combination of software and hardware. For details, please refer to the corresponding description in the aforementioned corresponding method embodiment.

[0121] In one possible design, the apparatus 500 includes: an interface module 501 and a processing module 502. The apparatus 500 may be, for example, a terminal, or a module (such as a processor, a chip, or a chip system, etc.) applied to the terminal, or a logical node, a logical module, or software that can implement all or part of the terminal functions. The interface module 501 is used to receive offset indication information, where the offset indication information is used to indicate a first offset value x and a second offset value y, where the first offset value x is an offset with a time slot as a granularity, and the second offset value y is an offset with a Ts as a granularity, where Ts=1 / (15*10 3 *2048) seconds. The processing module 502 is used to determine the time offset between the second cell and the first cell according to the above offset indication information. The detailed description of the apparatus 500 can be further referred to the corresponding description in the above corresponding method embodiment.

[0122] In one possible design, the apparatus 500 includes: an interface module 501 and a processing module 502. The apparatus 500 may be, for example, a wireless access network device, or a module (such as a processor, a chip, or a chip system, etc.) applied to the wireless access network device, or a logical node, a logical module, or software that can implement all or part of the wireless access network device functions. The processing module 502 is used to determine offset indication information, where the offset indication information is used to indicate a first offset value x and a second offset value y, where the first offset value x is an offset with a time slot as a granularity, and the second offset value y is an offset with a Ts as a granularity, where Ts=1 / (15*10 3 *2048) seconds, the above offset indication information is used to indicate the time offset between the second cell and the first cell. The interface module 501 is used to send the above offset indication information. The detailed description of the device 500 can be further referred to the corresponding description in the above corresponding method embodiment.

[0123] It is understandable that the beneficial effects corresponding to the above-mentioned device 500 and various possible implementations can be referred to the description in the aforementioned method embodiment or the invention content, and will not be repeated here.

[0124] Optionally, the apparatus 500 may further include a storage module 503 for storing data or instructions (also referred to as codes or programs), and the other modules may interact or couple with the storage module to implement corresponding methods or functions. For example, the processing module 502 may read the data or instructions in the storage module 503 so that the apparatus 500 implements the method in the above embodiment.

[0125] In one example, the module in the above-mentioned device can be one or more integrated circuits configured to implement the above method, such as: one or more application specific integrated circuits (ASIC), or one or more digital singnal processors (DSP), or one or more field programmable gate arrays (FPGA), or a combination of at least two of these integrated circuit forms. For another example, when the module in the device can be implemented in the form of a processing element scheduler, the processing element can be a general-purpose processor, such as a central processing unit (CPU) or other processor that can call a program. For another example, these units can be integrated together and implemented in the form of a system-on-a-chip (SOC).

[0126] refer to Figure 6, is a schematic diagram of a device provided in an embodiment of the present application, which can be used to implement the above method 300 and various possible implementations. Figure 6 As shown, the device includes: a processor 610 and an interface 630, and the processor 610 is coupled to the interface 630. The interface 630 is used to communicate with other modules or devices. The interface 630 can be a transceiver or an input and output interface. The interface 630 can be, for example, an interface circuit. Optionally, the device also includes a memory 620, which is used to store instructions executed by the processor 610 or to store input data required by the processor 610 to run the instructions or to store data generated after the processor 610 runs the instructions.

[0127] The above method 300 and various possible implementations can be implemented by the processor 610 calling a program or instruction stored in the memory 620. The memory 620 can be inside the device or outside the device, which is not limited in this application.

[0128] Optionally, Figure 5 The functions / implementation processes of the interface module 501 and the processing module 502 can be Figure 6 The processor 610 in the device shown is implemented. Or, Figure 5 The function / implementation process of the processing module 502 in Figure 6 The processor 610 in the device shown is implemented, Figure 5 The function / implementation process of the interface module 501 in can be Figure 6 , the interface 630 in the device shown in . Exemplarily, the function / implementation process of the interface module 501 can be implemented by the processor calling the program instructions in the memory to drive the interface 630 .

[0129] When the above device is a chip applied to a terminal, the chip of the terminal implements the functions of the terminal in the above method embodiment. The chip receives information from other modules in the terminal (such as a radio frequency module or an antenna), and the information comes from other terminals or wireless access network devices; or the chip sends information to other modules in the terminal (such as a radio frequency module or an antenna), and the information is sent by the terminal to other terminals or wireless access network devices.

[0130] When the above device is a chip applied to a wireless access network device, the chip implements the functions of the wireless access network device in the above method embodiment. The chip receives information from other modules (such as a radio frequency module or an antenna) in the wireless access network device, and the information comes from other wireless access network devices or terminals; or the chip sends information to other modules (such as a radio frequency module or an antenna) in the wireless access network device, and the information is sent by the wireless access network device to other wireless access network devices or terminals.

[0131] Those skilled in the art will appreciate that the various digital numbers such as the first and second involved in this application are only for the convenience of description, and are not used to limit the scope of the embodiments of this application, and also represent the order of precedence. "And / or" describes the association relationship of the associated objects, indicating that there may be three relationships, for example, A and / or B, which can represent: A exists alone, A and B exist at the same time, and B exists alone. In the text description of this application, the character " / " generally indicates that the associated objects before and after are in an "or" relationship; in the formula of this application, the character " / " indicates that the associated objects before and after are in a "divided" relationship. "At least one" refers to one or more. At least two refers to two or more. "At least one", "any one" or similar expressions refer to any combination of these items, including any combination of single items (individuals) or plural items (individuals). For example, at least one item (individuals, kinds) of a, b, or c can represent: a, b, c, ab, ac, bc, or abc, where a, b, c can be single or multiple. "Multiple" refers to two or more, and other quantifiers are similar.

[0132] It should be understood that in the various embodiments of the present application, the size of the serial numbers of the above-mentioned processes does not mean 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 the present application.

[0133] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented using software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the process or function described in the embodiment of the present application is generated in whole or in part. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions may be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from a website site, computer, server or data center by wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) mode to another website site, computer, server or data center. The computer-readable storage medium may be any available medium that a computer can access or a data storage device such as a server or data center that includes one or more available media integrated. The available medium may be a magnetic medium, (e.g., a floppy disk, a hard disk, a tape), an optical medium (e.g., a DVD), or a semiconductor medium (e.g., a solid state disk (SSD)), etc.

[0134] The steps of the method described in the embodiments of the present application can be directly embedded in the hardware, the software unit executed by the processor, or the combination of the two. The software unit can be stored in a random access memory (RAM), a flash memory, a read-only memory (ROM), a register, a hard disk, a removable disk, or other storage media of any form in the art. Exemplarily, the storage medium can be connected to the processor so that the processor can read information from the storage medium and can write information to the storage medium. Optionally, the storage medium can also be integrated into the processor. The processor and the storage medium can be arranged in an ASIC.

[0135] The present application also provides a computer-readable medium on which a computer program is stored. When the computer program is executed by a computer, the functions of any of the above method embodiments are implemented.

[0136] The present application also provides a computer program product, which implements the functions of any of the above-mentioned method embodiments when executed by a computer. The same or similar parts between the various embodiments in the present application can refer to each other. In the various embodiments in the present application, and the various implementation methods / implementation methods / implementation methods in the various embodiments, if there is no special explanation and logical conflict, the terms and / or descriptions between different embodiments and the various implementation methods / implementation methods / implementation methods in the various embodiments are consistent and can be referenced to each other, and the technical features in the various implementation methods / implementation methods / implementation methods in the various embodiments can be combined to form new embodiments, implementation methods, implementation methods, or implementation methods according to their inherent logical relationships. The above-described implementation methods of the present application do not constitute a limitation on the scope of protection of the present application.

Claims

1. A communication method, characterized in that: include: Receive offset indication information, the offset indication information is used to indicate a first offset value x and a second offset value y, the first offset value x is a time domain offset with a time slot as a granularity, and the second offset value y is a time domain offset with a granularity of Ts, Ts=1 / (15*10 3 *2048) seconds; The time offset between the second cell and the first cell is determined according to the offset indication information.

2. The method according to claim 1, characterized in that The offset indication information includes first indication information and second indication information, the first indication information is used to indicate the first offset value x, and the second indication information is used to indicate the second offset value y, and determining the time offset between the second cell and the first cell according to the offset indication information includes: The time offset between the second cell and the first cell is determined according to the first indication information and the second indication information.

3. The method according to claim 1 or 2, characterized in that: The maximum value of the second offset value y is the number of Ts contained in a slot corresponding to the reference subcarrier spacing SCS, and the reference SCS is the maximum value of the minimum SCS in the SCS set of the first cell and the minimum SCS in the SCS set of the second cell.

4. The method according to claim 3, characterized in that In the case where the minimum SCS in the SCS set of the first cell and the minimum SCS combination in the SCS set of the second cell are not {60 kHz, 60 kHz} or {120 kHz, 120 kHz}: If the minimum SCS in the SCS set of the primary cell PCell / primary secondary cell PSCell is less than or equal to the minimum SCS in the SCS set of the secondary cell SCell, then Ts 0 of slot 0 of the first cell is aligned with Ts y of slot ((-1*x) mod M) of the second cell, where the first cell is the PCell / PSCell and the second cell is the SCell; If the minimum SCS in the SCS set of the PCell / PSCell is greater than the minimum SCS in the SCS set of the SCell, then Ts 0 of slot 0 of the first cell is aligned with Ts y of slot (x mod M) of the second cell, wherein the first cell is the SCell and the second cell is the PCell / PSCell; Among them, mod is the modulo operation, M is the number of slots included in a frame, and the time domain length of the slot is determined based on the reference SCS.

5. The method according to claim 3, characterized in that: In the case where the minimum SCS in the SCS set of the first cell and the minimum SCS in the SCS set of the second cell are combined to be {60 kHz, 60 kHz} or {120 kHz, 120 kHz}: If the frequency domain position of pointA of the primary cell PCell / primary secondary cell PSCell is lower than the frequency domain position of pointA of the secondary cell SCell, then Ts 0 of slot 0 of the first cell is aligned with Tsy of slot ((-1*x) mod M) of the second cell, where the first cell is the PCell / PSCell and the second cell is the SCell; If the frequency domain position of pointA of the PCell / PSCell is higher than the frequency domain position of pointA of the SCell, then Ts 0 of slot 0 of the first cell is aligned with Ts y of slot (x mod M) of the second cell, wherein the first cell is the SCell and the second cell is the PCell / PSCell; Among them, mod is the modulo operation, M is the number of slots included in a frame, and the time domain length of the slot is determined based on the reference SCS.

6. A communication method, characterized in that: include: Determine the offset indication information, the offset indication information is used to indicate a first offset value x and a second offset value y, the first offset value x is an offset with a time slot as a granularity, and the second offset value y is an offset with a Ts as a granularity, Ts=1 / (15*10 3 *2048) seconds, where the offset indication information is used to indicate the time offset between the second cell and the first cell; The offset indication information is sent.

7. The method according to claim 6, characterized in that The offset indication information includes first indication information and second indication information, the first indication information is used to indicate the first offset value x, the second indication information is used to indicate the second offset value y, and the offset indication information is used to indicate the time offset between the second cell and the first cell, including: The first indication information and the second indication information are used to indicate the time offset between the second cell and the first cell.

8. The method according to claim 6 or 7, characterized in that: The maximum value of the second offset value y is the number of Ts contained in a slot corresponding to the reference subcarrier spacing SCS, and the reference SCS is the maximum value of the minimum SCS in the SCS set of the first cell and the minimum SCS in the SCS set of the second cell.

9. The method according to claim 8, characterized in that In the case where the minimum SCS in the SCS set of the first cell and the minimum SCS combination in the SCS set of the second cell are not {60 kHz, 60 kHz} or {120 kHz, 120 kHz}: If the minimum SCS in the SCS set of the primary cell PCell / primary secondary cell PSCell is less than or equal to the minimum SCS in the SCS set of the secondary cell SCell, then Ts 0 of slot 0 of the first cell is aligned with Ts y of slot ((-1*x) mod M) of the second cell, where the first cell is the PCell / PSCell and the second cell is the SCell; If the minimum SCS in the SCS set of the PCell / PSCell is greater than the minimum SCS in the SCS set of the SCell, then Ts 0 of slot 0 of the first cell is aligned with Ts y of slot (x mod M) of the second cell, wherein the first cell is the SCell and the second cell is the PCell / PSCell; Among them, mod is the modulo operation, M is the number of slots included in a frame, and the time domain length of the slot is determined based on the reference SCS.

10. The method according to claim 8, characterized in that In the case where the minimum SCS in the SCS set of the first cell and the minimum SCS in the SCS set of the second cell are combined to be {60 kHz, 60 kHz} or {120 kHz, 120 kHz}: If the frequency domain position of pointA of the primary cell PCell / primary secondary cell PSCell is lower than the frequency domain position of pointA of the secondary cell SCell, then Ts 0 of slot 0 of the first cell is aligned with Tsy of slot ((-1*x) mod M) of the second cell, where the first cell is the PCell / PSCell and the second cell is the SCell; If the frequency domain position of pointA of the PCell / PSCell is higher than the frequency domain position of pointA of the SCell, then Ts 0 of slot 0 of the first cell is aligned with Ts y of slot (x mod M) of the second cell, wherein the first cell is the SCell and the second cell is the PCell / PSCell; Among them, mod is the modulo operation, M is the number of slots included in a frame, and the time domain length of the slot is determined based on the reference SCS.

11. A communication device, characterized in that: include: A processor, the processor is coupled to a memory, the memory is used to store programs or instructions, when the program or instructions are executed by the processor, the device performs the method as described in any one of claims 1 to 5, or the device performs the method as described in any one of claims 6 to 10.

12. A computer-readable storage medium having instructions stored thereon, characterized in that: When the instructions are executed, the method according to any one of claims 1 to 5 is executed, or the method according to any one of claims 6 to 10 is executed.

13. A computer program product, characterized in that The method comprises a computer program code, and when the computer program code is executed, the method according to any one of claims 1 to 5 is implemented, or the method according to any one of claims 6 to 10 is implemented.

Images