A method and device for switching between new air interface and new air interface side link

Abstract

The disclosed embodiment discloses a method for switching between a new air interface and a new air interface side link, which can be applied to the field of communication technology, wherein the method executed by a network device includes: receiving first indication information, wherein the first indication information is used to indicate the switching capability of a terminal device; and determining the switching time for the terminal device to switch between a new air interface NR and a new air interface NR side link SL according to the switching capability of the terminal device. In this way, it is ensured that time-frequency domain resources can be effectively utilized, and the situation of information reception failure during the terminal device switching process is avoided.

Description

Technical Field

[0001] The present disclosure relates to the field of communication technology, and in particular to a method and device for switching a new air interface and a new air interface sidelink. Background Art

[0002] With the continuous development of IoT technology, the spectrum demand based on operators is increasing. As the actual spectrum that can be allocated and used gradually decreases, network equipment needs to transmit new air interface authorized spectrum services and new air interface sidelink services on the authorized spectrum at the same time. At the same time, terminal equipment needs to switch between new air interface authorized spectrum services and new air interface sidelink services on the same frequency band.

[0003] Therefore, how to provide a reliable new air interface and new air interface sidelink switching method is a problem that needs to be solved urgently. Summary of the invention

[0004] The embodiments of the present disclosure provide a method and apparatus for switching between a new air interface and a new air interface side link, which can perform reliable switching between a new air interface and a new air interface side link according to the switching capability of a terminal device.

[0005] In the first aspect, an embodiment of the present disclosure provides a method for switching between a new air interface and a new air interface side link, which is executed by a network device, and the method includes: receiving first indication information, wherein the first indication information is used to indicate the switching capability of the terminal device; and determining, according to the switching capability of the terminal device, a switching time for the terminal device to switch between the new air interface NR and the new air interface NR side link SL.

[0006] In the present disclosure, the network device first receives the first indication information sent by the terminal device to indicate its switching capability, and then determines the switching time for the terminal device to switch between the new air interface NR and the new air interface NR side link SL according to the switching capability of the terminal device. In this way, it is ensured that the time-frequency domain resources can be effectively utilized, and the situation of information reception failure during the terminal device switching process is avoided.

[0007] Optionally, also include:

[0008] Receiving radio resource control RRC signaling;

[0009] The first indication information is determined according to a value of a preset bit in the RRC signaling.

[0010] Optionally, also include:

[0011] Send second indication information, wherein the second indication information is used to instruct the terminal device to report switching capability.

[0012] Optionally, also include:

[0013] In response to the switching capability of the terminal device being that it has two radio frequency switching links, determining a first switching time for the terminal device to perform NR and NR SL switching;

[0014] or,

[0015] In response to the terminal device having a switching capability of one RF switching link, the second switching time for the terminal device to switch between NR and NR SL is determined according to the attribute information of the carriers corresponding to the NR and NR SL before and after the switching.

[0016] Optionally, also include:

[0017] In response to the fact that the attribute information of the carriers respectively corresponding to the NR and the NR SL before and after the switching is the same, determining that the second switching time is a first value;

[0018] Alternatively, in response to the different attribute information of the carriers corresponding to the NR and NR SL before and after the switching, the switching time is determined to be a second value.

[0019] Optionally, the attribute information of the carrier includes at least one of the following: subcarrier spacing SCS and bandwidth part BWP.

[0020] In a second aspect, an embodiment of the present disclosure provides a method for switching between a new air interface and a new air interface side link, the method being executed by a terminal device, and the method comprising: sending first indication information, wherein the first indication information is used to indicate a switching capability of the terminal device.

[0021] In the present disclosure, after the terminal device sends the first indication information indicating its switching capability to the network device, the network device can determine the switching time for the terminal device to switch between the new radio interface NR and the new radio interface NR side link SL according to the switching capability of the terminal device. In this way, it is ensured that the time-frequency domain resources can be effectively utilized and the situation of information reception failure during the terminal device switching process is avoided.

[0022] Optionally, also include:

[0023] Determine, according to the switching capability of the terminal device, a value of a preset bit corresponding to the first indication information in the radio resource control RRC signaling;

[0024] Send the RRC signaling.

[0025] Optionally, also include:

[0026] Receive second indication information, wherein the second indication information is used to indicate that the terminal device reports a switching capability.

[0027] In a third aspect, an embodiment of the present disclosure provides a communication device, on a network device side, including:

[0028] The transceiver module is used to receive first indication information, wherein the first indication information is used to indicate the switching capability of the terminal device.

[0029] The processing module is used to determine the switching time for the terminal device to switch between the new air interface NR and the new air interface NR side link SL according to the switching capability of the terminal device.

[0030] Optionally, the transceiver module is specifically used to:

[0031] Receiving radio resource control RRC signaling;

[0032] The processing module is specifically used to determine the first indication information according to the value of the preset bit in the RRC signaling.

[0033] Optionally, the transceiver module is specifically used to:

[0034] Send second indication information, wherein the second indication information is used to instruct the terminal device to report switching capability.

[0035] Optionally, the processing module is specifically used to:

[0036] In response to the switching capability of the terminal device being that it has two radio frequency switching links, determining a first switching time for the terminal device to perform NR and NR SL switching;

[0037] or,

[0038] In response to the terminal device having a switching capability of one RF switching link, the second switching time for the terminal device to switch between NR and NR SL is determined according to the attribute information of the carriers corresponding to the NR and NR SL before and after the switching.

[0039] Optionally, the processing module is specifically used to:

[0040] In response to the fact that the attribute information of the carriers respectively corresponding to the NR and the NR SL before and after the switching is the same, determining that the second switching time is a first value;

[0041] Alternatively, in response to the different attribute information of the carriers corresponding to the NR and NR SL before and after the switching, the switching time is determined to be a second value.

[0042] Optionally, the attribute information of the carrier includes at least one of the following: subcarrier spacing SCS and bandwidth part BWP.

[0043] In a fourth aspect, an embodiment of the present disclosure provides a communication device, on a terminal device side, including:

[0044] The transceiver module is used to send first indication information, wherein the first indication information is used to indicate the switching capability of the terminal device.

[0045] Optionally, the device further includes:

[0046] A processing module, used to determine a value of a preset bit corresponding to the first indication information in a radio resource control RRC signaling according to the switching capability of the terminal device;

[0047] The transceiver module is specifically used to send the RRC signaling.

[0048] Optionally, the transceiver module is specifically used to:

[0049] Receive second indication information, wherein the second indication information is used to indicate that the terminal device reports a switching capability.

[0050] In a fifth aspect, an embodiment of the present disclosure provides a communication device, which includes a processor. When the processor calls a computer program in a memory, the method described in the first aspect is executed.

[0051] In a sixth aspect, an embodiment of the present disclosure provides a communication device, which includes a processor. When the processor calls a computer program in a memory, the method described in the second aspect is executed.

[0052] In a seventh aspect, an embodiment of the present disclosure provides a communication device, which includes a processor and a memory, in which a computer program is stored; the processor executes the computer program stored in the memory so that the communication device executes the method described in the first aspect above.

[0053] In an eighth aspect, an embodiment of the present disclosure provides a communication device, which includes a processor and a memory, in which a computer program is stored; the processor executes the computer program stored in the memory so that the communication device executes the method described in the second aspect above.

[0054] In a ninth aspect, an embodiment of the present disclosure provides a communication device, which includes a processor and an interface circuit, wherein the interface circuit is used to receive code instructions and transmit them to the processor, and the processor is used to run the code instructions to enable the device to execute the method described in the first aspect above.

[0055] In a tenth aspect, an embodiment of the present disclosure provides a communication device, which includes a processor and an interface circuit, wherein the interface circuit is used to receive code instructions and transmit them to the processor, and the processor is used to run the code instructions to enable the device to execute the method described in the second aspect above.

[0056] In the eleventh aspect, an embodiment of the present disclosure provides a new air interface and a new air interface side link switching system, the system including the communication device described in the third aspect and the communication device described in the fourth aspect, or the system including the communication device described in the fifth aspect and the communication device described in the sixth aspect, or the system including the communication device described in the seventh aspect and the communication device described in the eighth aspect, or the system including the communication device described in the ninth aspect and the communication device described in the tenth aspect.

[0057] In a twelfth aspect, an embodiment of the present invention provides a computer-readable storage medium for storing instructions for the above-mentioned terminal device, and when the instructions are executed, the terminal device executes the method described in the first aspect.

[0058] In a thirteenth aspect, an embodiment of the present invention provides a readable storage medium for storing instructions used by the above-mentioned network device, and when the instructions are executed, the network device executes the method described in the above-mentioned second aspect.

[0059] In a fourteenth aspect, the present disclosure further provides a computer program product comprising a computer program, which, when executed on a computer, enables the computer to execute the method described in the first aspect above.

[0060] In a fifteenth aspect, the present disclosure further provides a computer program product comprising a computer program, which, when executed on a computer, enables the computer to execute the method described in the second aspect above.

[0061] In a sixteenth aspect, the present disclosure provides a chip system, which includes at least one processor and an interface, for supporting a terminal device to implement the functions involved in the first aspect, for example, determining or processing at least one of the data and information involved in the above method. In a possible design, the chip system also includes a memory, which is used to store computer programs and data necessary for the terminal device. The chip system can be composed of a chip, or it can include a chip and other discrete devices.

[0062] In a seventeenth aspect, the present disclosure provides a chip system, which includes at least one processor and an interface, and is used to support a network device to implement the functions involved in the second aspect, for example, determining or processing at least one of the data and information involved in the above method. In a possible design, the chip system also includes a memory, and the memory is used to store computer programs and data necessary for the network device. The chip system can be composed of a chip, or it can include a chip and other discrete devices.

[0063] In an eighteenth aspect, the present disclosure provides a computer program, which, when executed on a computer, enables the computer to execute the method described in the first aspect.

[0064] In a nineteenth aspect, the present disclosure provides a computer program which, when executed on a computer, enables the computer to execute the method described in the second aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0065] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure or the background technology, the drawings required for use in the embodiments of the present disclosure or the background technology will be described below.

[0066] Figure 1 is a schematic diagram of the architecture of a communication system provided by an embodiment of the present disclosure;

[0067] Figure 2 It is a flowchart of a method for switching a new air interface and a new air interface side link provided by an embodiment of the present disclosure;

[0068] Figure 3 It is a flowchart of a method for switching a new air interface and a new air interface side link provided by an embodiment of the present disclosure;

[0069] Figure 4 It is a flowchart of a method for switching a new air interface and a new air interface side link provided by an embodiment of the present disclosure;

[0070] Figure 5 It is a flowchart of a method for switching a new air interface and a new air interface side link provided by an embodiment of the present disclosure;

[0071] Figure 6 It is a flowchart of a method for switching a new air interface and a new air interface side link provided by an embodiment of the present disclosure;

[0072] Figure 7 It is a flowchart of a method for switching a new air interface and a new air interface side link provided by an embodiment of the present disclosure;

[0073] Figure 8 is a structural diagram of a communication device provided by an embodiment of the present disclosure;

[0074] Fig. 9 is a schematic diagram of the structure of another communication device provided by an embodiment of the present disclosure;

[0075] Fig.10 It is a schematic diagram of the structure of a chip provided in an embodiment of the present disclosure. DETAILED DESCRIPTION

[0076] For ease of understanding, the terms involved in the present disclosure are first introduced.

[0077] 1. Sidelink (SL)

[0078] Sidelink (SL) is a new link type introduced to support direct communication between vehicle-to-everything (V2X) devices. The design and enhancement of the sidelink includes the study of unicast, multicast and broadcast transmission on the sidelink, including the physical layer architecture and process of the sidelink based on the new radio (NR), the synchronization mechanism of the sidelink, the resource allocation mode of the link, the layer 2 / layer 3 protocol of the sidelink, etc.

[0079] 2. Subcarrier spacing (SCS)

[0080] Carrier is a frequency domain resource concept in the communication system, and subcarrier can be considered as a small frequency domain resource that can be modulated independently. A subchannel has one or more subcarriers. For example, in a 100MHz bandwidth, assuming that 15KHz is a subcarrier, this subchannel can contain multiple subcarriers.

[0081] 3. Radio resource control (RRC)

[0082] Radio resource control (RRC), also known as radio resource management or radio resource allocation, refers to the management, control and scheduling of radio resources through certain strategies and means, so as to make full use of limited wireless network resources as much as possible while meeting the requirements of service quality, ensure reaching the planned coverage area, and maximize the service capacity and resource utilization.

[0083] See also Figure 1 , Figure 1 The following is a schematic diagram of the architecture of a communication system provided by an embodiment of the present disclosure. The communication system may include but is not limited to a network device and a terminal device. Figure 1The number and form of devices shown are for illustrative purposes only and do not constitute a limitation on the embodiments of the present disclosure. In actual applications, two or more network devices and two or more terminal devices may be included. Figure 1 The communication system shown includes a network device 11 and a terminal device 12 as an example.

[0084] It should be noted that the technical solutions of the embodiments of the present disclosure can be applied to various communication systems, such as long term evolution (LTE) system, fifth generation (5G) mobile communication system, 5G new radio (NR) system, or other future new mobile communication systems.

[0085] The network device 11 in the embodiment of the present disclosure is an entity on the network side for transmitting or receiving signals. For example, the network device 101 may be an evolved NodeB (eNB), a transmission point (TRP), a next generation NodeB (gNB) in an NR system, a base station in other future mobile communication systems, or an access node in a wireless fidelity (WiFi) system. The embodiments of the present disclosure do not limit the specific technology and specific device form adopted by the network device. The network device provided in the embodiment of the present disclosure may be composed of a centralized unit (CU) and a distributed unit (DU), wherein the CU may also be referred to as a control unit. The CU-DU structure may be used to split the protocol layer of the network device, such as a base station, and the functions of some protocol layers are placed in the CU for centralized control, and the functions of the remaining part or all of the protocol layers are distributed in the DU, and the DU is centrally controlled by the CU.

[0086] The terminal device 12 in the embodiment of the present disclosure is an entity on the user side for receiving or transmitting signals, such as a mobile phone. The terminal device may also be referred to as a terminal device (terminal), user equipment (UE), mobile station (MS), mobile terminal device (MT), etc. The terminal device may be a car with communication function, a smart car, a mobile phone, a wearable device, a tablet computer (Pad), a computer with wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal device in industrial control (industrial control), a wireless terminal device in self-driving, a wireless terminal device in remote medical surgery, a wireless terminal device in smart grid (smart grid), a wireless terminal device in transportation safety (transportation safety), a wireless terminal device in a smart city (smart city), a wireless terminal device in a smart home (smart home), etc. The embodiment of the present disclosure does not limit the specific technology and specific device form adopted by the terminal device.

[0087] It can be understood that the communication system described in the embodiment of the present disclosure is for the purpose of more clearly illustrating the technical solution of the embodiment of the present disclosure, and does not constitute a limitation on the technical solution provided by the embodiment of the present disclosure. A person skilled in the art can know that with the evolution of the system architecture and the emergence of new business scenarios, the technical solution provided by the embodiment of the present disclosure is also applicable to similar technical problems.

[0088] A method and device for switching a new air interface and a new air interface side link provided by the present disclosure are described in detail below with reference to the accompanying drawings.

[0089] See also Figure 2 , Figure 2 1 is a flow chart of a method for switching a new air interface and a new air interface side link provided by an embodiment of the present disclosure, and the method is executed by a network device. Figure 2 As shown, the method may include but is not limited to the following steps:

[0090] Step 201: Receive first indication information, where the first indication information is used to indicate a switching capability of a terminal device.

[0091] It should be noted that in different switching scenarios between the new radio NR and the new radio NR sidelink SL, the specific switching time may vary. For example, the switching between NR and NR SL can be achieved by turning off the RF power before switching and then turning on the RF power after switching (i.e., on-off-on mode). The RF configuration time of NR and NR SL, that is, the time required from turning off the power to turning on the power (and vice versa), is 10 microseconds (μs). Therefore, on one RF link, the maximum time required for NR and NR SL to switch at the same frequency point can be 20 microseconds (μs).

[0092] Alternatively, if only the power of NR and NR SL changes before and after switching, and other parameters such as subcarrier spacing (SCS) and bandwidth part (BWP) remain unchanged, the RF power after switching can be directly turned on (i.e., on-on mode) to achieve NR and NR SL switching. Therefore, on one RF link, if only the power changes before and after switching between NR and NR SL, the maximum time required for NR and NR SL switching is 10 microseconds (μs).

[0093] Alternatively, if the terminal device is configured with two complete RF links, direct switching between the two links can be achieved by making preparations for switching on one link in advance, thereby further saving switching time. The actual switching time is about 0.5us.

[0094] In the present disclosure, the switching capability is determined by the terminal device according to the number of RF switching links it has. For example, if the terminal device supports two link switching, the switching capability of the terminal device may be: having two RF switching links; if the terminal device supports one link switching, the switching capability of the terminal device may be: having one RF switching link.

[0095] Correspondingly, the first indication information may indicate that the terminal has two radio frequency switching links, or has one radio frequency switching link, etc.

[0096] In the present disclosure, after receiving the first indication information, the network device can determine the switching capability of the terminal device.

[0097] Step 202: Determine the switching time for the terminal device to switch between the new radio interface NR and the new radio interface NR sidelink SL according to the switching capability of the terminal device.

[0098] In the present disclosure, considering that the terminal device cannot process other tasks during the link switching process, the network device can flexibly configure the switching time according to the switching capabilities of different terminal devices. This avoids the phenomenon that when the terminal device is capable of fast switching, the time-frequency domain resources are wasted due to the configuration of too long a switching time, or when the terminal device requires a long switching time, the reception of some information fails due to the configuration of too short a switching time.

[0099] Optionally, when the terminal device's switching capability is to have one RF switching link, the network device can determine that the switching time for the terminal device to switch between the new air interface NR and the new air interface NR side link SL is longer. When the terminal device's switching capability is to have two RF switching links, the network device can determine that the switching time for the terminal device to switch between the new air interface NR and the new air interface NR side link SL is shorter. Afterwards, the network device can reasonably configure the time for the terminal device to switch between the new air interface NR and the new air interface NR side link SL according to the actual time required for the terminal device to switch between the new air interface NR and the new air interface NR side link SL.

[0100] In the present disclosure, the network device first receives the first indication information sent by the terminal device to indicate its switching capability, and then determines the switching time for the terminal device to switch between the new radio interface NR and the new radio interface NR side link SL according to the switching capability of the terminal device. In this way, it is ensured that the time-frequency domain resources can be effectively utilized, and the situation of information reception failure during the terminal device switching process is avoided.

[0101] See also Figure 3 , Figure 3 FIG. 1 is a flow chart of another method for switching between a new air interface and a new air interface side link provided by an embodiment of the present disclosure. Figure 3 As shown, the method can be executed by a network device, and the method may include but is not limited to the following steps:

[0102] Step 301: Receive radio resource control (RRC) signaling.

[0103] In the present disclosure, the terminal device can identify the first indication information by the value of a preset bit in the RRC signaling. For example, when a bit is used in the RRC signaling to identify the switching capability of the terminal device, when the terminal device does not have the capability of switching between two links, that is, when it has the capability of switching between only one link, the bit value can be set to 0, and when the terminal device has the capability of switching between two links, the bit value can be set to 1.

[0104] Step 302: Determine first indication information according to the value of a preset bit in the RRC signaling.

[0105] In the present disclosure, after receiving the RRC signaling sent by the network device, the network device can determine the first indication information according to the value of the preset bit in the RRC signaling.

[0106] Step 303: Determine the switching time for the terminal device to switch between the new radio interface NR and the new radio interface NR sidelink SL according to the switching capability of the terminal device.

[0107] In the present disclosure, after determining the switching capability of the terminal device, the network device can determine the switching time for the terminal device to switch between the new air interface NR and the new air interface NR side link SL according to the switching capability of the terminal device, or the attribute information of the carriers corresponding to the NR and NR SL respectively.

[0108] The carrier attribute information may include at least one of the following: subcarrier spacing SCS, bandwidth part BWP. Optionally, the carrier attribute information may also include other information such as the location of the carrier, which is not limited in the present disclosure.

[0109] Optionally, when the switching capability of the terminal device is to have two RF switching links, the first switching time for the terminal device to switch between NR and NR SL can be determined, such as 0.5us or 0.6us.

[0110] Among them, in order to avoid the waste of time-frequency domain resources or the failure of information reception as much as possible, the first switching time in the present disclosure can be determined based on the maximum time required for NR and NR SL switching after the terminal device has two RF switching links and has made preparations for switching on one link in advance.

[0111] Optionally, when the switching capability of the terminal device is to have one RF switching link, the second switching time for the terminal device to switch between NR and NR SL can be determined according to the attribute information of the carriers corresponding to the NR and NR SL before and after the switching. Among them, the second switching time can be determined based on the maximum time required for the terminal device to switch between NR and NR SL when the terminal device has only one RF switching link. In this way, the time for the terminal device to switch between the new air interface and the new air interface side link can be accurately determined, thereby further improving the utilization of time-frequency domain resources.

[0112] It is understandable that when switching between NR and NR SL on one radio frequency link, the switching between NR and NR SL can be achieved by switching power. When switching between NR and NR SL on two radio frequency links, the switching preparation can be made in advance on one link, so the required switching time is greatly reduced. Therefore, the second switching time is greater than the first switching time.

[0113] In the present disclosure, the network device receives the radio resource control RRC signaling sent by the terminal device, and determines the first indication information according to the value of the preset bit in the RRC signaling, and then determines the switching time of the terminal device to switch between the new air interface NR and the new air interface NR side link SL according to the switching capability of the terminal device. In this way, it is ensured that the time-frequency domain resources can be effectively utilized, and the situation of information reception failure during the terminal device switching process is avoided.

[0114] See also Figure 4 , Figure 4 FIG. 1 is a flow chart of another method for switching between a new air interface and a new air interface side link provided by an embodiment of the present disclosure. Figure 4 As shown, the method can be executed by a network device, and the method may include but is not limited to the following steps:

[0115] Step 401: Send second indication information, where the second indication information is used to instruct the terminal device to report the switching capability.

[0116] The second indication information may indicate the terminal device to report the switching capability in the form of a bit value, for example, using 1 to indicate that the switching capability needs to be reported and using 0 to indicate that the switching capability does not need to be reported. Or the second indication information may indicate the terminal device to report the switching capability in the form of a text message. The present disclosure does not limit this.

[0117] In the present disclosure, the network device, in the switching scenario between the new air interface and the new air interface side link, or in the case of an unknown switching capability of the terminal device, can actively send a second indication message to the terminal device to notify the terminal device to start reporting the switching capability.

[0118] Step 402: Receive first indication information, where the first indication information is used to indicate a switching capability of the terminal device.

[0119] Step 403: In response to the terminal device having a switching capability of having two RF switching links, determine a first switching time for the terminal device to switch between NR and NR SL.

[0120] In this embodiment, the specific implementation process of step 402-step 403 can be found in the detailed description of any embodiment of the present disclosure, and will not be repeated here.

[0121] Step 404, in response to the terminal device's switching capability of having one RF switching link, determine a second switching time for the terminal device to switch between NR and NR SL according to attribute information of the carriers corresponding to the NR and NR SL before and after the switching.

[0122] In this embodiment, when the switching capability of the terminal device is to have a radio frequency switching link, after obtaining the attribute information of the carriers corresponding to the NR and NR SL before and after the switching, the attribute information of the carriers corresponding to the NR and NR SL before and after the switching is compared. If the attribute information of the two carriers is the same, the second switching time can be determined to be the first value. If the attribute information of the carriers of the two radio frequency switching links is different, the second switching time can be determined to be the second value. As a result, the network device further refines the time for switching the new air interface and the new air interface sidelink according to the attribute information of the carriers corresponding to the NR and NR SL before and after the switching, thereby further improving the utilization of time-frequency domain resources.

[0123] Among them, when the attribute information of the carriers corresponding to NR and NR SL are the same, when switching between NR and NR SL, it is only necessary to adjust the power of the RF link, that is, the switching mode at this time is on-on, so that the first value can be determined according to the time required for switching in an on-on manner. Correspondingly, when the attribute information of the carriers corresponding to NR and NR SL are different, when switching between NR and NR SL, it is necessary to first turn off the RF power before switching and then turn on the RF power after switching, that is, the switching mode at this time is on-off-on, so that the second value can be determined according to the time required for switching in an on-off-on manner. Therefore, the first value can be 10us, the second value can be 20us, and the second value is greater than the first value.

[0124] In the present disclosure, after the network device sends the second indication information to the terminal device, it can receive the first indication information sent by the terminal device, and then, in response to the switching capability of the terminal device being that it has a radio frequency switching link, according to the attribute information of the carriers respectively corresponding to the NR and NR SL before and after the switching, determine the second switching time for the terminal device to switch between NR and NR SL. In this way, it is ensured that the time-frequency domain resources can be effectively utilized, and the situation of information reception failure during the terminal device switching process is avoided.

[0125] See also Figure 5 , Figure 5 1 is a flow chart of a method for switching between a new air interface and a new air interface side link provided by an embodiment of the present disclosure, and the method is executed by a terminal device. Figure 5 As shown, the method may include but is not limited to the following steps:

[0126] Step 501: Send first indication information, where the first indication information is used to indicate a switching capability of a terminal device.

[0127] It should be noted that in different switching scenarios between the new radio NR and the new radio NR sidelink SL, the specific switching time may vary. For example, the switching between NR and NR SL can be achieved by turning off the RF power before switching and then turning on the RF power after switching (i.e., on-off-on mode). The RF configuration time of NR and NR SL, that is, the time required from turning off the power to turning on the power (and vice versa), is 10 microseconds (μs). Therefore, on one RF link, the maximum time required for NR and NR SL to switch at the same frequency point can be 20 microseconds (μs).

[0128] Alternatively, if only the power of NR and NR SL changes before and after switching, and other parameters such as subcarrier spacing (SCS) and bandwidth part (BWP) remain unchanged, the RF power after switching can be directly turned on (i.e., on-on mode) to achieve NR and NR SL switching. Therefore, on one RF link, if only the power changes before and after switching between NR and NR SL, the maximum time required for NR and NR SL switching is 10 microseconds (μs).

[0129] Alternatively, if the terminal device is configured with two complete RF links, direct switching between the two links can be achieved by making preparations for switching on one link in advance, thereby further saving switching time. The actual switching time is about 0.5us.

[0130] In the present disclosure, the switching capability is determined by the terminal device according to the number of RF switching links it has. For example, if the terminal device supports two link switching, the switching capability of the terminal device may be: having two RF switching links; if the terminal device supports one link switching, the switching capability of the terminal device may be: having one RF switching link.

[0131] Correspondingly, the first indication information may indicate that the terminal has two radio frequency switching links, or has one radio frequency switching link, etc.

[0132] In the present disclosure, after the terminal device sends the first indication information indicating its switching capability to the network device, the network device can determine the switching time for the terminal device to switch between the new radio interface NR and the new radio interface NR side link SL according to the switching capability of the terminal device. In this way, it is ensured that the time-frequency domain resources can be effectively utilized and the situation of information reception failure during the terminal device switching process is avoided.

[0133] See also Figure 6 , Figure 61 is a flow chart of a method for switching between a new air interface and a new air interface side link provided by an embodiment of the present disclosure, and the method is executed by a terminal device. Figure 6 As shown, the method may include but is not limited to the following steps:

[0134] Step 601: Determine the value of a preset bit corresponding to the first indication information in the radio resource control RRC signaling according to the switching capability of the terminal device.

[0135] In the present disclosure, the terminal device can identify the first indication information by the value of a preset bit in the RRC signaling. For example, when a bit is used in the RRC signaling to identify the switching capability of the terminal device, when the terminal device does not have the capability of switching between two links, that is, when it has the capability of switching between only one link, the bit value can be set to 0, and when the terminal device has the capability of switching between two links, the bit value can be set to 1.

[0136] Step 602: Send RRC signaling.

[0137] In the present disclosure, after the terminal device completes the RRC signaling setting, it can send the RRC signaling to the network device. After receiving the RRC signaling, the network device can determine the first indication information according to the value of the preset bit in the RRC signaling.

[0138] In the present disclosure, after the terminal device determines the value of the preset bit corresponding to the first indication information in the radio resource control RRC signaling according to the switching capability of the terminal device, the radio resource control RRC signaling can be sent to the network device. After receiving the RRC signaling, the network device can determine the first indication information according to the value of the preset bit in the RRC signaling, and then determine the switching time for the terminal device to switch between the new air interface NR and the new air interface NR side link SL according to the switching capability of the terminal device. In this way, it is ensured that the time-frequency domain resources can be effectively utilized, and the situation of information reception failure during the terminal device switching process is avoided.

[0139] See also Figure 7 , Figure 7 1 is a flow chart of a method for switching between a new air interface and a new air interface side link provided by an embodiment of the present disclosure, and the method is executed by a terminal device. Figure 7 As shown, the method may include but is not limited to the following steps:

[0140] Step 701: Receive second indication information, where the second indication information is used to instruct the terminal device to report a switching capability.

[0141] The second indication information may indicate the terminal device to report the switching capability in the form of a bit value, for example, using 1 to indicate that the switching capability needs to be reported and using 0 to indicate that the switching capability does not need to be reported. Or the second indication information may indicate the terminal device to report the switching capability in the form of a text message. The present disclosure does not limit this.

[0142] In the present disclosure, the network device, in the switching scenario between the new air interface and the new air interface side link, or in the case of an unknown switching capability of the terminal device, can actively send a second indication message to the terminal device to notify the terminal device to start reporting the switching capability.

[0143] Step 702: Send first indication information, where the first indication information is used to indicate the switching capability of the terminal device.

[0144] In this embodiment, the specific implementation process of step 702 can be found in the detailed description of any embodiment of the present disclosure, and will not be repeated here.

[0145] In the present disclosure, after receiving the second indication information sent by the network device, the terminal device can send the first indication information to the network device, and then, after receiving the first indication information, the network device can determine the switching time for the terminal device to switch between the new air interface NR and the new air interface NR side link SL according to the switching capability of the terminal device. In this way, it is ensured that the time-frequency domain resources can be effectively utilized, and the situation of information reception failure during the terminal device switching process is avoided.

[0146] See also Figure 8 , which is a structural diagram of a communication device 800 provided in an embodiment of the present disclosure. Figure 8 The communication device 800 shown may include a transceiver module 801 and a processing module 802. The transceiver module 801 may include a sending module and / or a receiving module, the sending module is used to implement a sending function, the receiving module is used to implement a receiving function, and the transceiver module 801 may implement a sending function and / or a receiving function.

[0147] It can be understood that the communication device 800 can be a network device, a device in a network device, or a device that can be used in conjunction with a network device.

[0148] The communication device 800 is on the network device side, wherein:

[0149] The transceiver module 801 is used to receive first indication information, wherein the first indication information is used to indicate the switching capability of the terminal device.

[0150] The processing module 802 is used to determine the switching time for the terminal device to switch between the new radio interface NR and the new radio interface NR side link SL according to the switching capability of the terminal device.

[0151] Optionally, the transceiver module 801 is specifically used for:

[0152] Receiving radio resource control RRC signaling;

[0153] The processing module 802 is specifically configured to determine the first indication information according to a value of a preset bit in the RRC signaling.

[0154] Optionally, the transceiver module 801 is specifically used for:

[0155] Send second indication information, wherein the second indication information is used to instruct the terminal device to report switching capability.

[0156] Optionally, the processing module 802 is specifically configured to:

[0157] In response to the switching capability of the terminal device being that it has two radio frequency switching links, determining a first switching time for the terminal device to perform NR and NR SL switching;

[0158] or,

[0159] In response to the switching capability of the terminal device being that it has one radio frequency switching link, determining a second switching time for the terminal device to switch between NR and NR SL according to attribute information of carriers respectively corresponding to NR and NR SL before and after switching;

[0160] The second switching time is greater than the first switching time.

[0161] Optionally, the processing module 802 is specifically configured to:

[0162] In response to the fact that the attribute information of the carriers respectively corresponding to the NR and the NR SL before and after the switching is the same, determining that the second switching time is a first value;

[0163] Alternatively, in response to different attribute information of the carriers respectively corresponding to the NR and the NR SL before and after the switching, determining the switching time to be a second value;

[0164] The second value is greater than the first value.

[0165] Optionally, the attribute information of the carrier includes at least one of the following: subcarrier spacing SCS and bandwidth part BWP.

[0166] In the present disclosure, the network device first receives the first indication information sent by the terminal device to indicate its switching capability, and then determines the switching time for the terminal device to switch between the new air interface NR and the new air interface NR side link SL according to the switching capability of the terminal device. In this way, it is ensured that the time-frequency domain resources can be effectively utilized, and the situation of information reception failure during the terminal device switching process is avoided.

[0167] It can be understood that the communication device 800 can be a terminal device, or a device in a terminal device, or a device that can be used in conjunction with an access network device.

[0168] The communication device 800 is at the terminal device side, wherein:

[0169] The transceiver module 801 is used to send first indication information, wherein the first indication information is used to indicate the switching capability of the terminal device.

[0170] Optionally, the device further includes:

[0171] The processing module 802 is used to determine the value of the preset bit corresponding to the first indication information in the radio resource control RRC signaling according to the switching capability of the terminal device;

[0172] The transceiver module 801 is specifically used to send the RRC signaling.

[0173] Optionally, the transceiver module 801 is specifically used for:

[0174] Receive second indication information, wherein the second indication information is used to indicate that the terminal device reports a switching capability.

[0175] In the present disclosure, after the terminal device sends the first indication information indicating its switching capability to the network device, the network device can determine the switching time for the terminal device to switch between the new radio interface NR and the new radio interface NR side link SL according to the switching capability of the terminal device. In this way, it is ensured that the time-frequency domain resources can be effectively utilized and the situation of information reception failure during the terminal device switching process is avoided.

[0176] See also Fig. 9 , Fig. 9 1 is a schematic diagram of the structure of another communication device 900 provided in an embodiment of the present disclosure. The communication device 900 may be a network device, or a terminal device, or a chip, a chip system, or a processor that supports the network device to implement the above method, or a chip, a chip system, or a processor that supports the terminal device to implement the above method. The device may be used to implement the method described in the above method embodiment, and the details may refer to the description in the above method embodiment.

[0177] The communication device 900 may include one or more processors 901. The processor 901 may be a general-purpose processor or a dedicated processor, etc. For example, it may be a baseband processor or a central processing unit. The baseband processor may be used to process the communication protocol and communication data, and the central processing unit may be used to control the communication device (such as a base station, a baseband chip, a terminal device, a terminal device chip, a DU or a CU, etc.), execute a computer program, and process the data of the computer program.

[0178] Optionally, the communication device 900 may further include one or more memories 902, on which a computer program 904 may be stored, and the processor 901 executes the computer program 904 so that the communication device 900 performs the method described in the above method embodiment. Optionally, data may also be stored in the memory 902. The communication device 900 and the memory 902 may be provided separately or integrated together.

[0179] Optionally, the communication device 900 may further include a transceiver 905 and an antenna 906. The transceiver 905 may be referred to as a transceiver unit, a transceiver, or a transceiver circuit, etc., and is used to implement a transceiver function. The transceiver 905 may include a receiver and a transmitter, the receiver may be referred to as a receiver or a receiving circuit, etc., and is used to implement a receiving function; the transmitter may be referred to as a transmitter or a transmitting circuit, etc., and is used to implement a transmitting function.

[0180] Optionally, the communication device 900 may further include one or more interface circuits 907. The interface circuit 907 is used to receive code instructions and transmit them to the processor 901. The processor 901 runs the code instructions to enable the communication device 900 to perform the method described in the above method embodiment.

[0181] The communication device 900 is a network device: the processor 901 is used to execute Figure 2 Step 202 in; Figure 3 Step 302 and step 303; Figure 4 403 in the.

[0182] The communication device 900 is a terminal device: the transceiver 1105 is used to perform Figure 5 Step 501 in; Figure 6 Step 602 in; Figure 7 Step 701 and step 702 in .

[0183] In one implementation, the processor 901 may include a transceiver for implementing receiving and sending functions. For example, the transceiver may be a transceiver circuit, an interface, or an interface circuit. The transceiver circuit, interface, or interface circuit for implementing the receiving and sending functions may be separate or integrated. The above-mentioned transceiver circuit, interface, or interface circuit may be used for reading and writing code / data, or the above-mentioned transceiver circuit, interface, or interface circuit may be used for transmitting or delivering signals.

[0184] In one implementation, the processor 901 may store a computer program 903, which runs on the processor 901 and enables the communication device 900 to perform the method described in the above method embodiment. The computer program 903 may be fixed in the processor 901, in which case the processor 901 may be implemented by hardware.

[0185] In one implementation, the communication device 900 may include a circuit that can implement the functions of sending or receiving or communicating in the aforementioned method embodiments. The processor and transceiver described in the present disclosure may be implemented in an integrated circuit (IC), an analog IC, a radio frequency integrated circuit RFIC, a mixed signal IC, an application specific integrated circuit (ASIC), a printed circuit board (PCB), an electronic device, etc. The processor and transceiver may also be manufactured using various IC process technologies, such as complementary metal oxide semiconductor (CMOS), N-type metal oxide semiconductor (nMetal-oxide-semiconductor, NMOS), P-type metal oxide semiconductor (positive channelmetal oxide semiconductor, PMOS), bipolar junction transistor (bipolar junction transistor, BJT), bipolar CMOS (BiCMOS), silicon germanium (SiGe), gallium arsenide (GaAs), etc.

[0186] The communication device described in the above embodiments may be a network device or a terminal device, but the scope of the communication device described in the present disclosure is not limited thereto, and the structure of the communication device may not be limited thereto. Fig. 9 The communication device may be an independent device or may be part of a larger device. For example, the communication device may be:

[0187] (1) Independent integrated circuit IC, or chip, or chip system or subsystem;

[0188] (2) having a set of one or more ICs, and optionally, the IC set may also include a storage component for storing data and computer programs;

[0189] (3) ASIC, such as modem;

[0190] (4) Modules that can be embedded in other devices;

[0191] (5) Receivers, terminal devices, intelligent terminal devices, cellular phones, wireless devices, handheld devices, mobile units, vehicle-mounted devices, network devices, cloud devices, artificial intelligence devices, etc.;

[0192] (6)Others

[0193] For the case where the communication device may be a chip or a chip system, see Fig.10 Schematic diagram of the chip structure shown. Fig.10 The chip shown includes a processor 1001 and an interface 1003. The number of the processor 1001 may be one or more, and the number of the interface 1003 may be multiple.

[0194] For the case where the chip is used to implement the functions of the network device in the embodiment of the present disclosure:

[0195] Interface 1003, used to execute Figure 2 Step 201 in; Figure 3 step 301 in; or Figure 4 Step 401 and step 402 in .

[0196] For the case where the chip is used to implement the functions of the terminal device in the embodiment of the present disclosure:

[0197] Interface 1003, used to execute Figure 5 Step 501 in; Figure 6 Step 602 in; Figure 7 Step 701 and step 702 in .

[0198] Optionally, the chip further includes a memory 1003, and the memory 1003 is used to store necessary computer programs and data.

[0199] Those skilled in the art may also understand that the various illustrative logical blocks and steps listed in the embodiments of the present disclosure may be implemented by electronic hardware, computer software, or a combination of the two. Whether such functions are implemented by hardware or software depends on the specific application and the design requirements of the entire system. Those skilled in the art may use various methods to implement the functions described for each specific application, but such implementation should not be understood as exceeding the scope of protection of the embodiments of the present disclosure.

[0200] The present disclosure also provides a readable storage medium having instructions stored thereon, which implement the functions of any of the above method embodiments when executed by a computer.

[0201] The present disclosure also provides a computer program product, which implements the functions of any of the above method embodiments when executed by a computer.

[0202] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented by 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 programs. When the computer program is loaded and executed on a computer, the process or function described in the embodiment of the present disclosure is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer program can 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 program can be transmitted from a website site, computer, server or data center by wired (e.g., coaxial cable, optical fiber, digital subscriber line (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 can 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 (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a high-density digital video disc (DVD)), or a semiconductor medium (eg, a solid state disk (SSD)).

[0203] Those skilled in the art can understand that the various numerical numbers such as first and second involved in the present disclosure are only used for distinction for convenience of description and are not used to limit the scope of the embodiments of the present disclosure, and also indicate the order of precedence.

[0204] At least one in the present disclosure may also be described as one or more, and a plurality may be two, three, four or more, which is not limited in the present disclosure. In the embodiments of the present disclosure, for a technical feature, the technical features in the technical feature are distinguished by "first", "second", "third", "A", "B", "C" and "D", etc., and there is no order of precedence or size between the technical features described by the "first", "second", "third", "A", "B", "C" and "D".

[0205] The corresponding relationships shown in the tables in the present disclosure can be configured or predefined. The values ​​of the information in each table are only examples and can be configured as other values, which are not limited by the present disclosure. When configuring the corresponding relationship between the information and each parameter, it is not necessarily required to configure all the corresponding relationships illustrated in each table. For example, in the table in the present disclosure, the corresponding relationships shown in some rows may not be configured. For another example, appropriate deformation adjustments can be made based on the above table, such as splitting, merging, etc. The names of the parameters shown in the titles of the above tables can also use other names that can be understood by the communication device, and the values ​​or representations of the parameters can also be other values ​​or representations that can be understood by the communication device. When implementing the above tables, other data structures can also be used, such as arrays, queues, containers, stacks, linear lists, pointers, linked lists, trees, graphs, structures, classes, heaps, hash tables or hash tables.

[0206] The predefined in the present disclosure may be understood as defined, predefined, stored, pre-stored, pre-negotiated, pre-configured, solidified, or pre-burned.

[0207] Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this disclosure.

[0208] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0209] The above is only a specific embodiment of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any person skilled in the art who is familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present disclosure, which should be included in the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be based on the protection scope of the claims.

Claims

1. A method for switching between a new air interface and a new air interface sidelink, characterized in that: Executed by a network device, the method includes: Receiving first indication information, wherein the first indication information is used to indicate a switching capability of a terminal device, wherein the switching capability is used to indicate a number of radio frequency switching links included in the terminal device; Determine, according to the switching capability of the terminal device, a switching duration for the terminal device to switch between a new radio interface NR and a new radio interface NR sidelink SL; The determining, according to the switching capability of the terminal device, a switching duration for the terminal device to switch between a new air interface NR and a new air interface NR sidelink SL includes: In response to the switching capability of the terminal device being that it has two radio frequency switching links, determining a first switching duration for the terminal device to switch between NR and NR SL, where the first switching duration is determined according to a maximum time required for the terminal device to switch between NR and NR SL after the terminal device has made preparations for switching in advance on one link; or, In response to the terminal device's switching capability of having a RF switching link, the second switching duration for the terminal device to switch between NR and NR SL is determined according to the attribute information of the carriers corresponding to the NR and NRSL before and after the switching. The second switching duration is determined by the maximum value of the corresponding switching duration values ​​when the attribute information of the carriers corresponding to the switching before and after the switching is the same or different.

2. The method according to claim 1, characterized in that The receiving first indication information includes: Receiving radio resource control RRC signaling; The first indication information is determined according to a value of a preset bit in the RRC signaling.

3. The method according to claim 1, characterized in that Also includes: Send second indication information, wherein the second indication information is used to instruct the terminal device to report switching capability.

4. The method according to claim 1, characterized in that The determining, according to the attribute information of the carriers respectively corresponding to the NR and the NR SL before and after the switching, a second switching duration for the terminal device to switch between the NR and the NR SL includes: In response to the fact that the attribute information of the carriers respectively corresponding to the NR and the NR SL before and after the switching is the same, determining that the second switching duration is a first value; Alternatively, in response to the different attribute information of the carriers corresponding to the NR and NR SL before and after the switching, the switching duration is determined to be a second value.

5. The method of claim 1, wherein: The attribute information of the carrier includes at least one of the following: subcarrier spacing SCS and bandwidth part BWP.

6. A communication device, characterized in that: The device comprises: A transceiver module, configured to receive first indication information, wherein the first indication information is used to indicate a switching capability of a terminal device, wherein the switching capability is used to indicate the number of radio frequency switching links that the terminal device has; A processing module, used to determine, according to the switching capability of the terminal device, a switching duration for the terminal device to switch between a new air interface NR and a new air interface NR side link SL; The processing module is specifically used for: In response to the switching capability of the terminal device being that it has two radio frequency switching links, determining that the switching duration for the terminal device to switch between NR and NR SL is a first switching duration, where the first switching duration is determined according to the maximum time required for the terminal to switch between NR and NR SL after the terminal has made preparations for switching in advance on one link; or, In response to the terminal device's switching capability of having a RF switching link, the switching duration for the terminal device to switch between NR and NR SL is determined to be the second switching duration according to the attribute information of the carriers corresponding to the NR and NRSL before and after the switching. The second switching duration is determined by the maximum value of the corresponding switching duration values ​​under the same and different circumstances under which the attribute information of the carriers corresponding to the switching before and after the switching is the same.

7. The device according to claim 6, characterized in that The transceiver module is specifically used for: Receiving radio resource control RRC signaling; The processing module is specifically used to determine the first indication information according to the value of the preset bit in the RRC signaling.

8. The device according to claim 6, characterized in that The transceiver module is specifically used for: Send second indication information, wherein the second indication information is used to instruct the terminal device to report switching capability.

9. The device according to claim 6, characterized in that The processing module is specifically used for: In response to the fact that the attribute information of the carriers respectively corresponding to the NR and the NR SL before and after the switching is the same, determining that the second switching duration is a first value; Alternatively, in response to the different attribute information of the carriers corresponding to the NR and NR SL before and after the switching, the switching duration is determined to be a second value.

10. The device of claim 6, wherein: The attribute information of the carrier includes at least one of the following: subcarrier spacing SCS and bandwidth part BWP.

11. A communication device, characterized in that: The device comprises a processor and a memory, wherein a computer program is stored in the memory, and the processor executes the computer program stored in the memory so that the device performs the method according to any one of claims 1 to 5.

12. A computer-readable storage medium storing instructions, which, when executed, enable the method according to any one of claims 1 to 5 to be implemented.

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