CN114208239A - Method and device for switching new air interface and new air interface sidelink - Google Patents
Method and device for switching new air interface and new air interface sidelink Download PDFInfo
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Abstract
The embodiment of the disclosure discloses a new air interface and a method for switching a new air interface sidelink, which can be applied to the technical field of communication, wherein the method executed by network equipment comprises the following steps: receiving first indication information, wherein the first indication information is used for indicating the switching capability of the terminal equipment; and determining the switching time of the terminal equipment for switching the new air interface NR and the new air interface NR side link SL according to the switching capability of the terminal equipment. By the method, the time-frequency domain resource can be effectively utilized, and the condition of information receiving failure in the switching process of the terminal equipment is avoided.
Description
Technical Field
The present disclosure relates to the field of communications technologies, and in particular, to a method and an apparatus for switching a new air interface and a new air interface sidelink.
Background
With the continuous development of the internet of things technology, the spectrum demand based on operators is increasing. Under the condition that the distributable actual frequency spectrum is gradually reduced, the network device needs to transmit a new air interface authorized frequency spectrum service and a new air interface sidelink service on the authorized frequency spectrum. Meanwhile, the terminal device needs to perform switching between the new air interface authorized spectrum service and the new air interface sidelink service in the same frequency band.
Therefore, how to provide a reliable new air interface and a new air interface sidelink switching method is a problem that needs to be solved urgently at present.
Disclosure of Invention
The embodiment of the disclosure provides a method and a device for switching a new air interface and a new air interface sidelink, which can perform reliable switching of the new air interface and the new air interface sidelink according to the switching capability of terminal equipment.
In a first aspect, an embodiment of the present disclosure provides a new air interface and a method for switching a new air interface sidelink, where the method is executed by a network device, and the method includes: receiving first indication information, wherein the first indication information is used for indicating the switching capability of the terminal equipment; and determining the switching time of the terminal equipment for switching the new air interface NR and the new air interface NR side link SL according to the switching capability of the terminal equipment.
In the disclosure, the network device first receives first indication information for indicating the switching capability of the terminal device, and determines the switching time for the terminal device to switch the new air interface NR and the new air interface NR side link SL according to the switching capability of the terminal device. Therefore, the time-frequency domain resources can be effectively utilized, and the condition that information receiving fails in the switching process of the terminal equipment is avoided.
Optionally, the method further includes:
receiving Radio Resource Control (RRC) signaling;
and determining the first indication information according to the value of a preset bit in the RRC signaling.
Optionally, the method further includes:
and sending second indication information, wherein the second indication information is used for indicating the terminal equipment to report the switching capability.
Optionally, the method further includes:
responding to the switching capability of the terminal equipment to have two radio frequency switching links, and determining first switching time for the terminal equipment to carry out NR and NR SL switching;
alternatively, the first and second electrodes may be,
and in response to the switching capability of the terminal equipment being that a radio frequency switching link is provided, determining second switching time for the terminal equipment to carry out NR and NR SL switching according to the attribute information of carriers respectively corresponding to NR and NR SL before and after switching.
Optionally, the method further includes:
determining the second switching time as a first numerical value in response to the fact that the attribute information of carriers respectively corresponding to NR and NR SL before and after switching is the same;
or, in response to that the attribute information of the carriers respectively corresponding to NR and NR SL before and after the switching is different, determining that the switching time is the second value.
Optionally, the attribute information of the carrier includes at least one of: subcarrier spacing SCS and bandwidth part BWP.
In a second aspect, an embodiment of the present disclosure provides a new air interface and a method for switching a new air interface sidelink, where the method is executed by a terminal device, and the method includes: and sending first indication information, wherein the first indication information is used for indicating the switching capability of the terminal equipment.
In this disclosure, after the terminal device sends the first indication information for indicating the switching capability of the terminal device to the network device, the network device may determine, according to the switching capability of the terminal device, the switching time for the terminal device to switch the new air interface NR and the new air interface NR side link SL. Therefore, the time-frequency domain resources can be effectively utilized, and the condition that information receiving fails in the switching process of the terminal equipment is avoided.
Optionally, the method further includes:
determining 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 equipment;
and sending the RRC signaling.
Optionally, the method further includes:
and receiving second indication information, wherein the second indication information is used for indicating the terminal equipment to report the switching capability.
In a third aspect, an embodiment of the present disclosure provides a communication apparatus, which includes, on a network device side:
a transceiver module, configured to receive first indication information, where the first indication information is used to indicate a handover capability of the terminal device.
And the processing module is used for determining the switching time of the terminal equipment for switching the new air interface NR and the new air interface NR side link SL according to the switching capacity of the terminal equipment.
Optionally, the transceiver module is specifically configured to:
receiving Radio Resource Control (RRC) signaling;
the processing module is specifically configured to determine the first indication information according to a value of a preset bit in the RRC signaling.
Optionally, the transceiver module is specifically configured to:
and sending second indication information, wherein the second indication information is used for indicating the terminal equipment to report the switching capability.
Optionally, the processing module is specifically configured to:
responding to the switching capability of the terminal equipment to have two radio frequency switching links, and determining first switching time for the terminal equipment to carry out NR and NR SL switching;
alternatively, the first and second electrodes may be,
and in response to the switching capability of the terminal equipment being that a radio frequency switching link is provided, determining second switching time for the terminal equipment to carry out NR and NR SL switching according to the attribute information of carriers respectively corresponding to NR and NR SL before and after switching.
Optionally, the processing module is specifically configured to:
determining the second switching time as a first numerical value in response to the fact that the attribute information of carriers respectively corresponding to NR and NR SL before and after switching is the same;
or, in response to that the attribute information of the carriers respectively corresponding to NR and NR SL before and after the switching is different, determining that the switching time is the second value.
Optionally, the attribute information of the carrier includes at least one of: subcarrier spacing SCS and bandwidth part BWP.
In a fourth aspect, an embodiment of the present disclosure provides a communication apparatus, including, on a terminal device side:
a transceiver module, configured to send first indication information, where the first indication information is used to indicate a handover capability of the terminal device.
Optionally, the apparatus further includes:
a processing module, configured to determine, according to the handover capability of the terminal device, a value of a preset bit corresponding to the first indication information in a radio resource control RRC signaling;
the transceiver module is specifically configured to send the RRC signaling.
Optionally, the transceiver module is specifically configured to:
and receiving second indication information, wherein the second indication information is used for indicating the terminal equipment to report the switching capability.
In a fifth aspect, the disclosed embodiments provide a communication device comprising a processor, which, when calling a computer program in a memory, executes the method of the first aspect.
In a sixth aspect, the disclosed embodiments provide a communication device comprising a processor that, when calling a computer program in a memory, performs the method of the second aspect described above.
In a seventh aspect, the disclosed embodiments provide a communication device comprising a processor and a memory, the memory having stored therein a computer program; the processor executes the computer program stored in the memory to cause the communication device to perform the method of the first aspect.
In an eighth aspect, an embodiment of the present disclosure provides a communication apparatus, including a processor and a memory, in which a computer program is stored; the processor executes the computer program stored in the memory to cause the communication device to perform the method of the second aspect.
In a ninth aspect, an embodiment of the present disclosure provides a communication apparatus, including a processor and an interface circuit, where the interface circuit is configured to receive code instructions and transmit the code instructions to the processor, and the processor is configured to execute the code instructions to cause the apparatus to perform the method according to the first aspect.
In a tenth aspect, an embodiment of the present disclosure provides a communication apparatus, which includes a processor and an interface circuit, where the interface circuit is configured to receive code instructions and transmit the code instructions to the processor, and the processor is configured to execute the code instructions to cause the apparatus to perform the method according to the second aspect.
In an eleventh aspect, an embodiment of the present disclosure provides a new air interface and a new air interface sidelink switching system, where the system includes the communication apparatus of the third aspect and the communication apparatus of the fourth aspect, or the system includes the communication apparatus of the fifth aspect and the communication apparatus of the sixth aspect, or the system includes the communication apparatus of the seventh aspect and the communication apparatus of the eighth aspect, or the system includes the communication apparatus of the ninth aspect and the communication apparatus of the tenth aspect.
In a twelfth aspect, an embodiment of the present invention provides a computer-readable storage medium, configured to store instructions for the terminal device, where the instructions, when executed, cause the terminal device to perform the method according to the first aspect.
In a thirteenth aspect, an embodiment of the present invention provides a readable storage medium for storing instructions for the network device, where the instructions, when executed, cause the network device to perform the method of the second aspect.
In a fourteenth aspect, the present disclosure also provides a computer program product comprising a computer program which, when run on a computer, causes the computer to perform the method of the first aspect described above.
In a fifteenth aspect, the present disclosure also provides a computer program product comprising a computer program which, when run on a computer, causes the computer to perform the method of the second aspect described above.
In a sixteenth aspect, the present disclosure provides a chip system comprising at least one processor and an interface for enabling a terminal device to implement the functionality according to the first aspect, e.g. to determine or process at least one of data and information related in the above method. In one possible design, the chip system further includes a memory for storing computer programs and data necessary for the terminal device. The chip system may be formed by a chip, or may include a chip and other discrete devices.
In a seventeenth aspect, the present disclosure provides a chip system comprising at least one processor and an interface, for enabling a network device to implement the functions referred to in the second aspect, e.g., determining or processing at least one of data and information referred to in the above method. In one possible design, the system-on-chip further includes a memory for storing computer programs and data necessary for the network device. The chip system may be formed by a chip, or may include a chip and other discrete devices.
In an eighteenth aspect, the present disclosure provides a computer program which, when run on a computer, causes the computer to perform the method of the first aspect described above.
In a nineteenth aspect, the present disclosure provides a computer program which, when run on a computer, causes the computer to perform the method of the second aspect described above.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments or the background art of the present disclosure, the drawings required to be used in the embodiments or the background art of the present disclosure will be described below.
Fig. 1 is a schematic architecture diagram of a communication system provided by an embodiment of the present disclosure;
fig. 2 is a schematic flowchart of a method for switching a new air interface and a new air interface sidelink according to an embodiment of the present disclosure;
fig. 3 is a schematic flowchart of a method for switching a new air interface and a new air interface sidelink according to an embodiment of the present disclosure;
fig. 4 is a schematic flowchart of a method for switching a new air interface and a new air interface sidelink according to an embodiment of the present disclosure;
fig. 5 is a schematic flowchart of a method for switching a new air interface and a new air interface sidelink according to an embodiment of the present disclosure;
fig. 6 is a schematic flowchart of a method for switching a new air interface and a new air interface sidelink according to an embodiment of the present disclosure;
fig. 7 is a schematic flowchart of a method for switching a new air interface and a new air interface sidelink according to an embodiment of the present disclosure;
fig. 8 is a schematic structural diagram of a communication device according to an embodiment of the present disclosure;
fig. 9 is a schematic structural diagram of another communication device provided in the embodiments of the present disclosure;
fig. 10 is a schematic structural diagram of a chip according to an embodiment of the present disclosure.
Detailed Description
For ease of understanding, terms to which the present disclosure relates will be first introduced.
1. Sidelink (sidelink, SL)
Sidelink (SL) is a new link type introduced to support direct communication between vehicle to outside information exchange (V2X) devices. The specific content of designing and enhancing the sidelink includes studying unicast, multicast and broadcast transmission on the sidelink, and specifically includes a physical layer architecture and a flow of the sidelink based on a New Radio (NR), a synchronization mechanism of the sidelink, a resource allocation mode of the link, a layer 2/layer 3 protocol of the sidelink, and the like.
2. Subcarrier spacing (SCS)
A carrier is a concept of frequency domain resource in a communication system, and a subcarrier can be regarded as a small segment of frequency domain resource which can be independently modulated. A subchannel has one or more subcarriers, e.g., within a 100MHz bandwidth, and may comprise multiple subcarriers, assuming 15KHz is a subcarrier.
3. Radio Resource Control (RRC)
Radio Resource Control (RRC), also known as radio resource management or radio resource allocation, refers to performing radio resource management, control and scheduling by using certain policies and means, and under the condition of meeting the requirement of service quality, making full use of limited radio network resources as much as possible, ensuring that the radio network resources reach a planned coverage area, and improving service capacity and resource utilization as much as possible.
Referring to fig. 1, fig. 1 is a schematic diagram of an architecture of a communication system according to an embodiment of the present disclosure. The communication system may include, but is not limited to, one network device and one terminal device, the number and form of the devices shown in fig. 1 are only for example and do not constitute a limitation to the embodiments of the present disclosure, and two or more network devices and two or more terminal devices may be included in practical applications. The communication system shown in fig. 1 is exemplified to include one network device 11 and one terminal device 12.
It should be noted that the technical solutions of the embodiments of the present disclosure can be applied to various communication systems. For example: a Long Term Evolution (LTE) system, a 5th generation (5G) mobile communication system, a 5G New Radio (NR) system, or other future new mobile communication systems.
The network device 11 in the embodiment of the present disclosure is an entity for transmitting or receiving signals on the network side. For example, the network device 101 may be an evolved NodeB (eNB), a transmission point (TRP), a next generation base station (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 technologies and the specific device forms adopted by the network devices. The network device provided by the embodiment of the present disclosure may be composed of a Central Unit (CU) and a Distributed Unit (DU), where the CU may also be referred to as a control unit (control unit), and a protocol layer of a network device, such as a base station, may be split by using a structure of CU-DU, functions of a part of the protocol layer are placed in the CU for centralized control, and functions of the remaining part or all of the protocol layer are distributed in the DU, and the DU is centrally controlled by the CU.
The terminal device 12 in the embodiment of the present disclosure is an entity, such as a mobile phone, on the user side for receiving or transmitting signals. A terminal device may also be referred to as a terminal device (terminal), a User Equipment (UE), a Mobile Station (MS), a mobile terminal device (MT), etc. The terminal device may be a vehicle having a communication function, a smart vehicle, a mobile phone (mobile phone), a wearable device, a tablet computer (Pad), a computer with a wireless transceiving 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 (self-driving), a wireless terminal device in remote surgery (remote medical supply), a wireless terminal device in smart grid (smart grid), a wireless terminal device in transportation safety (transportation safety), a wireless terminal device in smart city (smart city), a wireless terminal device in smart home (smart home), and the like. The embodiments of the present disclosure do not limit the specific technology and the specific device form adopted by the terminal device.
It is to be understood that the communication system described in the embodiment of the present disclosure is for more clearly illustrating the technical solutions of the embodiment of the present disclosure, and does not constitute a limitation to the technical solutions provided in the embodiment of the present disclosure, and as a person having ordinary skill in the art knows that as the system architecture evolves and new service scenarios appear, the technical solutions provided in the embodiment of the present disclosure are also applicable to similar technical problems.
A new air interface and a method for switching a new air interface sidelink and a device thereof provided by the present disclosure are described in detail below with reference to the accompanying drawings.
Referring to fig. 2, fig. 2 is a flowchart illustrating a method for switching between a new air interface and a new air interface sidelink according to an embodiment of the present disclosure, where the method is executed by a network device. As shown in fig. 2, the method may include, but is not limited to, the following steps:
It should be noted that, in different scenarios of switching between the new air interface NR and the new air interface NR side link SL, the specific switching time may be different. For example, the NR and NR SL switching may be implemented by turning off the rf power before switching and then turning on the rf power after switching (i.e., on-off-on). While the radio frequency configuration times for NR and NR SL, i.e. the time required from off power to on power (and conversely from on power to off power), are both 10 microseconds (μ s). Therefore, on 1 RF link, the maximum time required for NR and NR SL to switch at the same frequency point can be 20 microseconds (μ s).
Or, if only the power of NR and NR SL is changed before and after the handover, and other parameter portions, such as subcarrier spacing (SCS), bandwidth portion (BWP), etc., are not changed, the radio frequency power after the handover can be directly turned on (i.e., on-on manner), so as to implement the NR and NR SL handover. Thus, in the case where only the power changes before and after the switching of NR and NR SL on 1 rf link, the maximum time required for the switching of NR and NR SL is 10 microseconds (μ s).
Or, if the terminal device is configured with two complete radio frequency links, the direct switching between the two links can be realized by preparing a preparation before switching on one link in advance, so that the switching time can be further saved, and the actual switching time is about 0.5 us.
In the present disclosure, the switching capability is determined by the terminal device according to the number of radio frequency switching links. For example, if the terminal device supports two link handover, the handover capability of the terminal device may be: the two radio frequency switching links are provided, and if the terminal device supports one link switching, the switching capability of the terminal device may be: a radio frequency switching link is provided.
Correspondingly, the first indication information may indicate that the terminal has two radio frequency switching links, or has one radio frequency switching link, and the like.
In the disclosure, after receiving the first indication information, the network device may determine the handover capability of the terminal device.
In the disclosure, it is considered that, because the terminal device cannot process other tasks in the process of switching the link, the network device may flexibly configure the switching time according to the switching capabilities of different terminal devices. Therefore, the phenomenon that time-frequency domain resources are wasted due to the fact that overlong switching time is configured under the condition that the terminal equipment can carry out fast switching is avoided, or the phenomenon that partial information receiving fails due to the fact that overlong switching time is configured under the condition that the terminal equipment needs longer switching time is avoided.
Optionally, when the switching capability of the terminal device is that a radio frequency switching link is provided, the network device may determine that the switching time for switching the new air interface NR and the new air interface NR side link SL by the terminal device is longer. When the switching capability of the terminal device is two radio frequency switching links, the network device may determine that the switching time for switching the new air interface NR and the new air interface NR side link SL by the terminal device is short. Then, the network device can reasonably configure the time for switching the terminal device according to the actual time required for switching the new air interface NR and the new air interface NR side link SL of the terminal device.
In the disclosure, the network device first receives first indication information, which is sent by the terminal device and used for indicating the switching capability of the terminal device, and then determines the switching time for the terminal device to switch the new air interface NR and the new air interface NR side link SL according to the switching capability of the terminal device. Therefore, the time-frequency domain resources can be effectively utilized, and the condition that information receiving fails in the switching process of the terminal equipment is avoided.
Referring to fig. 3, fig. 3 is a schematic flow chart of another method for switching between a new air interface and a new air interface sidelink according to the embodiment of the present disclosure. As shown in fig. 3, the method may be performed by a network device, and may include, but is not limited to, the following steps:
In this disclosure, the terminal device may identify the first indication information through a value of a preset bit in the RRC signaling. For example, when a single bit is used in the RRC signaling to identify the handover capability of the terminal device, when the terminal device does not have the capability of switching between two links, that is, when only one link is available, the bit value may be set to 0, and when the terminal device has the capability of switching between two links, the bit value may be set to 1.
In this disclosure, after receiving an RRC signaling sent by a network device, the network device may determine first indication information according to a value of a preset bit in the RRC signaling.
In this disclosure, after determining the switching capability of the terminal device, the network device may determine, according to the switching capability of the terminal device or the attribute information of the carriers corresponding to NR and NR SL, the switching time for switching the new air interface NR and the new air interface NR side link SL by the terminal device.
Wherein the attribute information of the carrier may include at least one of: subcarrier spacing SCS, bandwidth part BWP. Optionally, the attribute information of the carrier may further include other information such as a location of the carrier, which is not limited in this disclosure.
Optionally, when the handover capability of the terminal device is that two radio frequency handover links are provided, the first handover time for performing the NR and NR SL handover by the terminal device may be determined, for example, 0.5us and 0.6 us.
In order to avoid the phenomenon of waste of time-frequency domain resources or the phenomenon of failure in receiving information as much as possible, in the present disclosure, the first switching time may be determined according to the maximum time required for performing NR and NR SL switching after preparation before switching is made on one link in advance under the condition that the terminal device has two radio frequency switching links.
Optionally, when the switching capability of the terminal device is that a radio frequency switching link is provided, the second switching time for the terminal device to perform NR and NR SL switching may be determined according to the attribute information of the carriers corresponding to NR and NR SL before and after switching. The second switching time may be determined according to a maximum time required for the terminal device to perform switching between NR and NR SL when the terminal device has only one radio frequency switching link. Therefore, the time for switching the new air interface and the new air interface side link of the terminal equipment can be accurately determined, and the utilization rate of time-frequency domain resources is further improved.
It can be understood that, when performing NR and NR SL switching on one radio frequency link, NR and NR SL switching can be achieved by switching power, and when performing NR and NR SL switching on two radio frequency links, switching preparation can be prepared in advance on one link, so that required switching time is greatly reduced. Therefore, the second switching time is greater than the first switching time.
In the disclosure, a network device controls an RRC signaling by receiving a radio resource sent by a terminal device, determines first indication information according to a value of a preset bit in the RRC signaling, and then determines a switching time for switching a new air interface NR and a new air interface NR sidelink SL of the terminal device according to a switching capability of the terminal device. Therefore, the time-frequency domain resources can be effectively utilized, and the condition that information receiving fails in the switching process of the terminal equipment is avoided.
Referring to fig. 4, fig. 4 is a schematic flow chart of another method for switching between a new air interface and a new air interface sidelink according to the embodiment of the present disclosure. As shown in fig. 4, the method may be performed by a network device, and may include, but is not limited to, the following steps:
The second indication information may indicate, in a bit value manner, that the terminal device reports the handover capability, for example, the terminal device needs to report the handover capability by using a 1 identifier, and does not need to report the handover capability by using a 0 identifier. Or the terminal equipment is indicated to report the switching capacity in a text message mode. The present disclosure is not so limited.
In this disclosure, the network device may actively send the second indication information to the terminal device in a switching scenario between a new air interface and a new air interface sidelink, or in a situation that the switching capability of the terminal device is unknown, so as to notify the terminal device to start reporting the switching capability.
In this embodiment, the specific implementation process of steps 402 to 403 may refer to the detailed description of any embodiment of the present disclosure, and is not described herein again.
In this embodiment, when the switching capability of the terminal device is that a radio frequency switching link is provided, after acquiring the attribute information of carriers corresponding to NR and NR SL before and after switching, the attribute information of the carriers corresponding to NR and NR SL before and after switching is compared, if the attribute information of the two carriers is the same, the second switching time may be determined to be a first value, and if the attribute information of the carriers of the two radio frequency switching links is different, the second switching time may be determined to be a second value. Therefore, the network equipment further accurately performs the time for switching the new air interface and the new air interface side link according to the attribute information of the carrier wave corresponding to the NR and the NR SL before and after switching, thereby further improving the utilization rate of the time-frequency domain resource.
When the NR and NR SL are switched under the condition that the attribute information of the carriers corresponding to the NR and NR SL are the same, only the power of the radio frequency link needs to be adjusted, that is, the switching mode at this time is an on-on mode, so that the first value can be determined according to the time required for switching in the on-on mode. Correspondingly, when the attribute information of the carriers respectively corresponding to the NR and the NR SL is different, when the NR and the NR SL are switched, the radio frequency power before the switching needs to be closed, and then the radio frequency power after the switching needs to be opened, namely, the switching mode at this time is on-off-on, so that the second value can be determined according to the time needed for switching in the on-off-on mode. Thus, the first value may be 10us and the second value may be 20us, the second value being greater than the first value.
In this disclosure, after sending the second indication information to the terminal device, the network device may receive the first indication information sent by the terminal device, and then, in response to the switching capability of the terminal device being that a radio frequency switching link is provided, determine, according to the attribute information of the carriers corresponding to NR and NR SL before and after switching, a second switching time for the terminal device to perform NR and NR SL switching. Therefore, the time-frequency domain resources can be effectively utilized, and the condition that information receiving fails in the switching process of the terminal equipment is avoided.
Referring to fig. 5, fig. 5 is a flowchart illustrating a method for switching between a new air interface and a new air interface sidelink according to an embodiment of the present disclosure, where the method is executed by a terminal device. As shown in fig. 5, the method may include, but is not limited to, the following steps:
It should be noted that, in different scenarios of switching between the new air interface NR and the new air interface NR side link SL, the specific switching time may be different. For example, the NR and NR SL switching may be implemented by turning off the rf power before switching and then turning on the rf power after switching (i.e., on-off-on). While the radio frequency configuration times for NR and NR SL, i.e. the time required from off power to on power (and conversely from on power to off power), are both 10 microseconds (μ s). Therefore, on 1 RF link, the maximum time required for NR and NR SL to switch at the same frequency point can be 20 microseconds (μ s).
Or, if only the power of NR and NR SL is changed before and after the handover, and other parameter portions, such as subcarrier spacing (SCS), bandwidth portion (BWP), etc., are not changed, the radio frequency power after the handover can be directly turned on (i.e., on-on manner), so as to implement the NR and NR SL handover. Thus, in the case where only the power changes before and after the switching of NR and NR SL on 1 rf link, the maximum time required for the switching of NR and NR SL is 10 microseconds (μ s).
Or, if the terminal device is configured with two complete radio frequency links, the direct switching between the two links can be realized by preparing a preparation before switching on one link in advance, so that the switching time can be further saved, and the actual switching time is about 0.5 us.
In the present disclosure, the switching capability is determined by the terminal device according to the number of radio frequency switching links. For example, if the terminal device supports two link handover, the handover capability of the terminal device may be: the two radio frequency switching links are provided, and if the terminal device supports one link switching, the switching capability of the terminal device may be: a radio frequency switching link is provided.
Correspondingly, the first indication information may indicate that the terminal has two radio frequency switching links, or has one radio frequency switching link, and the like.
In this disclosure, after the terminal device sends the first indication information for indicating the switching capability of the terminal device to the network device, the network device may determine, according to the switching capability of the terminal device, the switching time for the terminal device to switch the new air interface NR and the new air interface NR side link SL. Therefore, the time-frequency domain resources can be effectively utilized, and the condition that information receiving fails in the switching process of the terminal equipment is avoided.
Referring to fig. 6, fig. 6 is a flowchart illustrating a method for switching between a new air interface and a new air interface sidelink according to an embodiment of the present disclosure, where the method is executed by a terminal device. As shown in fig. 6, the method may include, but is not limited to, the following steps:
In this disclosure, the terminal device may identify the first indication information through a value of a preset bit in the RRC signaling. For example, when a single bit is used in the RRC signaling to identify the handover capability of the terminal device, when the terminal device does not have the capability of switching between two links, that is, when only one link is available, the bit value may be set to 0, and when the terminal device has the capability of switching between two links, the bit value may be set to 1.
In the disclosure, after the terminal device completes RRC signaling setting, the RRC signaling may be sent to the network device, and after receiving the RRC signaling, the network device may determine the first indication information according to a value of a preset bit in the RRC signaling.
In this disclosure, the terminal device may send the radio resource control RRC signaling to the network device after determining, according to the handover capability of the terminal device, a value of a preset bit corresponding to the first indication information in the radio resource control RRC signaling. After receiving the RRC signaling, the network device may determine the first indication information according to a value of a preset bit in the RRC signaling, and then determine a switching time for the terminal device to perform switching between the new air interface NR and the new air interface NR sidelink SL according to a switching capability of the terminal device. Therefore, the time-frequency domain resources can be effectively utilized, and the condition that information receiving fails in the switching process of the terminal equipment is avoided.
Referring to fig. 7, fig. 7 is a flowchart illustrating a method for switching between a new air interface and a new air interface sidelink according to an embodiment of the present disclosure, where the method is executed by a terminal device. As shown in fig. 7, the method may include, but is not limited to, the following steps:
The second indication information may indicate, in a bit value manner, that the terminal device reports the handover capability, for example, the terminal device needs to report the handover capability by using a 1 identifier, and does not need to report the handover capability by using a 0 identifier. Or the terminal equipment is indicated to report the switching capacity in a text message mode. The present disclosure is not so limited.
In this disclosure, the network device may actively send the second indication information to the terminal device in a switching scenario between a new air interface and a new air interface sidelink, or in a situation that the switching capability of the terminal device is unknown, so as to notify the terminal device to start reporting the switching capability.
In this embodiment, the specific implementation process of step 702 may refer to the detailed description of any embodiment of the present disclosure, and is not described herein again.
In this disclosure, after receiving the second indication information sent by the network device, the terminal device may send the first indication information to the network device, and then, after receiving the first indication information, the network device may determine, according to the switching capability of the terminal device, the switching time for switching the new air interface NR and the new air interface NR sidelink SL by the terminal device. Therefore, the time-frequency domain resources can be effectively utilized, and the condition that information receiving fails in the switching process of the terminal equipment is avoided.
Please refer to fig. 8, which is a schematic structural diagram of a communication device 800 according to an embodiment of the present disclosure. The communication device 800 shown in fig. 8 may include a transceiver module 801 and a processing module 802. The transceiver module 801 may include a transmitting module and/or a receiving module, where the transmitting module is used to implement a transmitting function, the receiving module is used to implement a receiving function, and the transceiver module 801 may implement a transmitting function and/or a receiving function.
It is understood that the communication apparatus 800 may be a network device, an apparatus in a network device, or an apparatus capable of being used with a network device.
The communication apparatus 800 is on the network device side, wherein:
a transceiver module 801, configured to receive first indication information, where the first indication information is used to indicate a handover capability of the terminal device.
A processing module 802, configured to determine, according to the switching capability of the terminal device, a switching time for switching between a new air interface NR and a new air interface NR side link SL of the terminal device.
Optionally, the transceiver module 801 is specifically configured to:
receiving Radio Resource Control (RRC) signaling;
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.
Optionally, the transceiver module 801 is specifically configured to:
and sending second indication information, wherein the second indication information is used for indicating the terminal equipment to report the switching capability.
Optionally, the processing module 802 is specifically configured to:
responding to the switching capability of the terminal equipment to have two radio frequency switching links, and determining first switching time for the terminal equipment to carry out NR and NR SL switching;
alternatively, the first and second electrodes may be,
responding to the switching capability of the terminal equipment to have a radio frequency switching link, and determining second switching time for the terminal equipment to carry out NR and NR SL switching according to the attribute information of carriers respectively corresponding to NR and NR SL before and after switching;
wherein the second switching time is greater than the first switching time.
Optionally, the processing module 802 is specifically configured to:
determining the second switching time as a first numerical value in response to the fact that the attribute information of carriers respectively corresponding to NR and NR SL before and after switching is the same;
or, in response to that the attribute information of the carriers respectively corresponding to NR and NR SL before and after the switching is different, determining that the switching time is a second value;
wherein the second value is greater than the first value.
Optionally, the attribute information of the carrier includes at least one of: subcarrier spacing SCS and bandwidth part BWP.
In the disclosure, the network device first receives first indication information for indicating the switching capability of the terminal device, and determines the switching time for the terminal device to switch the new air interface NR and the new air interface NR side link SL according to the switching capability of the terminal device. Therefore, the time-frequency domain resources can be effectively utilized, and the condition that information receiving fails in the switching process of the terminal equipment is avoided.
It is understood that the communication apparatus 800 may be a terminal device, an apparatus in the terminal device, or an apparatus capable of being used with an access network device.
a transceiver module 801, configured to send first indication information, where the first indication information is used to indicate a handover capability of the terminal device.
Optionally, the apparatus further includes:
a processing module 802, configured to determine, according to the handover capability of the terminal device, a value of a preset bit corresponding to the first indication information in a radio resource control RRC signaling;
the transceiver module 801 is specifically configured to send the RRC signaling.
Optionally, the transceiver module 801 is specifically configured to:
and receiving second indication information, wherein the second indication information is used for indicating the terminal equipment to report the switching capability.
In this disclosure, after the terminal device sends the first indication information for indicating the switching capability of the terminal device to the network device, the network device may determine, according to the switching capability of the terminal device, the switching time for the terminal device to switch the new air interface NR and the new air interface NR side link SL. Therefore, the time-frequency domain resources can be effectively utilized, and the condition that information receiving fails in the switching process of the terminal equipment is avoided.
Referring to fig. 9, fig. 9 is a schematic structural diagram of another communication device 900 according to an embodiment of the present disclosure. The communication apparatus 900 may be a network device, a terminal device, a chip system, a processor, or the like supporting the network device to implement the method described above, or a chip, a chip system, a processor, or the like supporting the terminal device to implement the method described above. The apparatus may be configured to implement the method described in the method embodiment, and refer to the description in the method embodiment.
The communication device 900 may include one or more processors 901. The processor 901 may be a general purpose processor or a special purpose processor, etc. For example, a baseband processor or a central processor. The baseband processor may be configured to process communication protocols and communication data, and the central processor may be configured to control a communication device (e.g., a base station, a baseband chip, a terminal device chip, a DU or CU, etc.), execute a computer program, and process data of the computer program.
Optionally, the communication apparatus 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 apparatus 900 executes the method described in the above method embodiments. Optionally, the memory 902 may further store data therein. The communication device 900 and the memory 902 may be provided separately or may be integrated together.
Optionally, the communication device 900 may further include a transceiver 905 and an antenna 906. The transceiver 905 may be referred to as a transceiving unit, a transceiver, or a transceiving circuit, etc. for implementing a transceiving function. The transceiver 905 may include a receiver and a transmitter, and the receiver may be referred to as a receiver or a receiving circuit, etc. for implementing a receiving function; the transmitter may be referred to as a transmitter or a transmission circuit, etc. for implementing the transmission function.
Optionally, one or more interface circuits 907 may also be included in communications device 900. Interface circuit 907 is used to receive code instructions and transmit them to processor 901. The processor 901 executes the code instructions to cause the communication device 900 to perform the methods described in the above method embodiments.
The communication apparatus 900 is a network device: processor 901 is configured to execute step 202 in fig. 2; step 302, step 303 in fig. 3; 403 in fig. 4.
The communication apparatus 900 is a terminal device: the transceiver 1105 is used to perform step 501 in fig. 5; step 602 in FIG. 6; step 701 and step 702 in fig. 7.
In one implementation, the processor 901 may include a transceiver for implementing receiving and transmitting functions. The transceiver may be, for example, a transceiver circuit, or an interface circuit. The transmit and receive circuitry, interfaces or interface circuitry used to implement the receive and transmit functions may be separate or integrated. The transceiver circuit, the interface circuit or the interface circuit may be used for reading and writing code/data, or the transceiver circuit, the interface circuit or the interface circuit may be used for transmitting or transferring signals.
In one implementation, the processor 901 may store a computer program 903, and the computer program 903 runs on the processor 901, and may cause the communication apparatus 900 to execute the method described in the above method embodiment. The computer program 903 may be solidified in the processor 901, in which case the processor 901 may be implemented by hardware.
In one implementation, the communication device 900 may include circuitry that may implement the functionality of transmitting or receiving or communicating in the foregoing method embodiments. The processors and transceivers described in this disclosure may be implemented on Integrated Circuits (ICs), analog ICs, Radio Frequency Integrated Circuits (RFICs), mixed signal ICs, Application Specific Integrated Circuits (ASICs), Printed Circuit Boards (PCBs), electronic devices, and the like. The processor and transceiver may also be fabricated using various IC process technologies, such as Complementary Metal Oxide Semiconductor (CMOS), N-type metal oxide semiconductor (NMOS), P-type metal oxide semiconductor (PMOS), Bipolar Junction Transistor (BJT), bipolar CMOS (bicmos), silicon germanium (SiGe), gallium arsenide (GaAs), and the like.
The communication apparatus in the above description of the embodiment may be a network device or a terminal device, but the scope of the communication apparatus described in the present disclosure is not limited thereto, and the structure of the communication apparatus may not be limited by fig. 9. The communication means may be a stand-alone device or may be part of a larger device. For example, the communication means may be:
(1) a stand-alone integrated circuit IC, or chip, or system-on-chip or subsystem;
(2) a set of one or more ICs, which optionally may also include storage means for storing data, computer programs;
(3) an ASIC, such as a Modem (Modem);
(4) a module that may be embedded within other devices;
(5) receivers, terminal devices, smart terminal devices, cellular phones, wireless devices, handsets, mobile units, in-vehicle devices, network devices, cloud devices, artificial intelligence devices, and the like;
(6) others, and so forth.
For the case that the communication device may be a chip or a system of chips, see the schematic structural diagram of the chip shown in fig. 10. The chip shown in fig. 10 includes a processor 1001 and an interface 1003. The number of the processors 1001 may be one or more, and the number of the interfaces 1003 may be more.
For the case where the chip is used to implement the functions of the network device in the embodiments of the present disclosure:
an interface 1003 for performing step 201 in fig. 2; step 301 in FIG. 3; or step 401, step 402 in fig. 4.
For the case that the chip is used for realizing the functions of the terminal device in the embodiments of the present disclosure:
an interface 1003 for performing step 501 in fig. 5; step 602 in FIG. 6; step 701 and step 702 in fig. 7.
Optionally, the chip further comprises a memory 1003, the memory 1003 being used to store necessary computer programs and data.
Those of skill in the art will also appreciate that the various illustrative logical blocks and steps (step) set forth in the embodiments of the disclosure may be implemented in electronic hardware, computer software, or combinations of both. Whether such functionality is implemented as hardware or software depends upon the particular application and design requirements of the overall system. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the disclosed embodiments.
The present disclosure also provides a readable storage medium having stored thereon instructions which, when executed by a computer, implement the functionality of any of the above-described method embodiments.
The present disclosure also provides a computer program product which, when executed by a computer, implements the functionality of any of the above-described method embodiments.
In the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When implemented in software, may 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. The procedures or functions according to the embodiments of the present disclosure are wholly or partially generated when the computer program is loaded and executed on a computer. The computer may be a general purpose computer, a special purpose computer, a network of computers, 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 one website, computer, server, or data center to another website, computer, server, or data center by wire (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device, such as a server, a data center, etc., that incorporates one or more of the available media. The usable medium may be a magnetic medium (e.g., a floppy disk, a hard disk, a magnetic tape), an optical medium (e.g., a Digital Video Disk (DVD)), or a semiconductor medium (e.g., a Solid State Disk (SSD)), among others.
Those of ordinary skill in the art will understand that: the various numbers of the first, second, etc. involved in this disclosure are merely for convenience of description and distinction, and are not intended to limit the scope of the embodiments of the disclosure, but also to indicate the order of precedence.
At least one of the present disclosure may also be described as one or more, and a plurality may be two, three, four or more, without limitation of the present disclosure. In the embodiment 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", and the like, and the technical features described in "first", "second", "third", "a", "B", "C", and "D" are not in the order of priority or magnitude.
The correspondence shown in the tables in the present disclosure may be configured or predefined. The values of the information in each table are only examples, and may be configured as other values, and the disclosure is not limited thereto. When the correspondence between the information and each parameter is configured, it is not always necessary to configure all the correspondences indicated in each table. For example, in the table in the present disclosure, the correspondence relationship shown by some rows may not be configured. For another example, appropriate modification adjustments, such as splitting, merging, etc., can be made based on the above tables. The names of the parameters in the tables may be other names understandable by the communication device, and the values or the expression of the parameters may be other values or expressions understandable by the communication device. When the above tables are implemented, other data structures may be used, for example, arrays, queues, containers, stacks, linear tables, pointers, linked lists, trees, graphs, structures, classes, heaps, hash tables, or hash tables may be used.
Predefinition in this disclosure may be understood as defining, predefining, storing, pre-negotiating, pre-configuring, curing, or pre-firing.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present disclosure.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
The above description is only for the specific embodiments of the present disclosure, but the scope of the present disclosure is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present disclosure, and all the changes or substitutions should be covered within the scope of the present disclosure. Therefore, the protection scope of the present disclosure shall be subject to the protection scope of the claims.
Claims (22)
1. A method for switching a new air interface and a new air interface sidelink is characterized by being executed by network equipment, and the method comprises the following steps:
receiving first indication information, wherein the first indication information is used for indicating the switching capability of the terminal equipment.
And determining the switching time of the terminal equipment for switching the new air interface NR and the new air interface NR side link SL according to the switching capability of the terminal equipment.
2. The method of claim 1, wherein the receiving the first indication information comprises:
receiving Radio Resource Control (RRC) signaling;
and determining the first indication information according to the value of a preset bit in the RRC signaling.
3. The method of claim 1, further comprising:
and sending second indication information, wherein the second indication information is used for indicating the terminal equipment to report the switching capability.
4. The method according to any one of claims 1 to 3, wherein the determining, according to the switching capability of the terminal device, the switching time for the terminal device to perform switching between the new air interface NR and the new air interface NR side link SL includes:
responding to the switching capability of the terminal equipment to have two radio frequency switching links, and determining first switching time for the terminal equipment to carry out NR and NR SL switching;
alternatively, the first and second electrodes may be,
and in response to the switching capability of the terminal equipment being that a radio frequency switching link is provided, determining second switching time for the terminal equipment to carry out NR and NR SL switching according to the attribute information of carriers respectively corresponding to NR and NR SL before and after switching.
5. The method of claim 4, wherein the determining the second switching time for the terminal device to perform the NR and NR SL switching according to the attribute information of the carriers corresponding to the NR and NR SL before and after the switching comprises:
determining the second switching time as a first numerical value in response to the fact that the attribute information of carriers respectively corresponding to NR and NR SL before and after switching is the same;
or, in response to that the attribute information of the carriers respectively corresponding to NR and NR SL before and after the switching is different, determining that the switching time is the second value.
6. The method of claim 4, wherein the attribute information of the carrier comprises at least one of: subcarrier spacing SCS and bandwidth part BWP.
7. A method for switching a new air interface and a new air interface side link is characterized in that the method is executed by a terminal device, and the method comprises the following steps:
and sending first indication information, wherein the first indication information is used for indicating the switching capability of the terminal equipment.
8. The method of claim 7, wherein the sending the first indication information comprises:
determining 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 equipment;
and sending the RRC signaling.
9. The method of claim 7, further comprising:
and receiving second indication information, wherein the second indication information is used for indicating the terminal equipment to report the switching capability.
10. A communications apparatus, the apparatus comprising:
a transceiver module, configured to receive first indication information, where the first indication information is used to indicate a handover capability of the terminal device.
And the processing module is used for determining the switching time of the terminal equipment for switching the new air interface NR and the new air interface NR side link SL according to the switching capacity of the terminal equipment.
11. The apparatus as claimed in claim 10, wherein said transceiver module is specifically configured to:
receiving Radio Resource Control (RRC) signaling;
the processing module is specifically configured to determine the first indication information according to a value of a preset bit in the RRC signaling.
12. The apparatus as claimed in claim 10, wherein said transceiver module is specifically configured to:
and sending second indication information, wherein the second indication information is used for indicating the terminal equipment to report the switching capability.
13. The apparatus according to any one of claims 10 to 12, wherein the processing module is specifically configured to:
responding to the switching capability of the terminal equipment to have two radio frequency switching links, and determining first switching time for the terminal equipment to carry out NR and NR SL switching;
alternatively, the first and second electrodes may be,
and in response to the switching capability of the terminal equipment being that a radio frequency switching link is provided, determining second switching time for the terminal equipment to carry out NR and NR SL switching according to the attribute information of carriers respectively corresponding to NR and NR SL before and after switching.
14. The apparatus of claim 13, wherein the processing module is specifically configured to:
determining the second switching time as a first numerical value in response to the fact that the attribute information of carriers respectively corresponding to NR and NR SL before and after switching is the same;
or, in response to that the attribute information of the carriers respectively corresponding to NR and NR SL before and after the switching is different, determining that the switching time is the second value.
15. The apparatus of claim 13, wherein the attribute information of the carrier comprises at least one of: subcarrier spacing SCS and bandwidth part BWP.
16. A communications apparatus, the apparatus comprising:
a transceiver module, configured to send first indication information, where the first indication information is used to indicate a handover capability of the terminal device.
17. The apparatus of claim 16, wherein the apparatus further comprises:
a processing module, configured to determine, according to the handover capability of the terminal device, a value of a preset bit corresponding to the first indication information in a radio resource control RRC signaling;
the transceiver module is specifically configured to send the RRC signaling.
18. The apparatus as claimed in claim 16, wherein said transceiver module is specifically configured to:
and receiving second indication information, wherein the second indication information is used for indicating the terminal equipment to report the switching capability.
19. A communications apparatus, comprising a processor and a memory, the memory having stored therein a computer program, the processor executing the computer program stored in the memory to cause the apparatus to perform the method of any of claims 1 to 6.
20. A communication apparatus, characterized in that the apparatus comprises a processor and a memory, in which a computer program is stored, the processor executing the computer program stored in the memory to cause the apparatus to perform the method according to any of claims 7 to 9.
21. A computer-readable storage medium storing instructions that, when executed, cause the method of any of claims 1-6 to be implemented.
22. A computer-readable storage medium storing instructions that, when executed, cause the method of any of claims 7-9 to be implemented.
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| PCT/CN2021/131005 WO2023087156A1 (en) | 2021-11-16 | 2021-11-16 | Method and apparatus for switching between new radio and new radio sidelink |
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| WO (1) | WO2023087156A1 (en) |
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| CN115552970A (en) * | 2022-08-05 | 2022-12-30 | 北京小米移动软件有限公司 | Path switching method and device |
| WO2023184094A1 (en) * | 2022-03-28 | 2023-10-05 | 北京小米移动软件有限公司 | Method and apparatus for transmitting downlink control information, and readable storage medium |
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| WO2018077428A1 (en) * | 2016-10-28 | 2018-05-03 | Nokia Technologies Oy | Optimized synchronous ra-less handover without explicit handover confirmation message |
| CN113170292A (en) * | 2021-03-22 | 2021-07-23 | 北京小米移动软件有限公司 | Configuration method and device of sidelink, communication equipment and storage medium |
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| CN116996951A (en) * | 2018-11-19 | 2023-11-03 | 华为技术有限公司 | Uplink switching method, communication device and communication system |
| EP4029173A1 (en) * | 2019-09-09 | 2022-07-20 | Telefonaktiebolaget LM Ericsson (publ) | Switching waveforms for uplink transmission in nr network |
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2021
- 2021-11-16 WO PCT/CN2021/131005 patent/WO2023087156A1/en unknown
- 2021-11-16 CN CN202180003974.3A patent/CN114208239A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018077428A1 (en) * | 2016-10-28 | 2018-05-03 | Nokia Technologies Oy | Optimized synchronous ra-less handover without explicit handover confirmation message |
| CN113170292A (en) * | 2021-03-22 | 2021-07-23 | 北京小米移动软件有限公司 | Configuration method and device of sidelink, communication equipment and storage medium |
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| WO2023184094A1 (en) * | 2022-03-28 | 2023-10-05 | 北京小米移动软件有限公司 | Method and apparatus for transmitting downlink control information, and readable storage medium |
| CN115552970A (en) * | 2022-08-05 | 2022-12-30 | 北京小米移动软件有限公司 | Path switching method and device |
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