CN114245425A - NTN-TN switching method, device, equipment and readable storage medium - Google Patents
NTN-TN switching method, device, equipment and readable storage medium Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0055—Transmission or use of information for re-establishing the radio link
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/185—Space-based or airborne stations; Stations for satellite systems
- H04B7/1851—Systems using a satellite or space-based relay
- H04B7/18513—Transmission in a satellite or space-based system
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/185—Space-based or airborne stations; Stations for satellite systems
- H04B7/1853—Satellite systems for providing telephony service to a mobile station, i.e. mobile satellite service
- H04B7/18539—Arrangements for managing radio, resources, i.e. for establishing or releasing a connection
- H04B7/18541—Arrangements for managing radio, resources, i.e. for establishing or releasing a connection for handover of resources
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- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/185—Space-based or airborne stations; Stations for satellite systems
- H04B7/1853—Satellite systems for providing telephony service to a mobile station, i.e. mobile satellite service
- H04B7/18563—Arrangements for interconnecting multiple systems
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- H—ELECTRICITY
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- H04W—WIRELESS COMMUNICATION NETWORKS
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Abstract
The embodiment of the application provides an NTN-TN switching method, an NTN-TN switching device, NTN-TN switching equipment and a readable storage medium, wherein the method comprises the following steps: the terminal acquires the service information at the next moment; the terminal judges whether to carry out NTN-TN switching according to the acquired service information at the next moment; and if the NTN-TN switching is required to be carried out, the terminal sends a first message to the source base station, wherein the first message is used for requesting the NTN-TN switching. In the embodiment of the application, the switching process is not triggered only by the traditional RSRP or RSRQ measurement, the NTN-TN switching is actively requested to the source base station through the service information of the next moment acquired by the terminal from the application layer, the source base station comprehensively considers the factors such as the moving speed, the moving direction and the load condition of the candidate target base station, the moving speed and the moving direction of the terminal and the like to select the most suitable target base station for the terminal, and the service continuity of the switching process between the non-ground network and the ground network is ensured.
Description
Technical Field
The embodiment of the application relates to the technical field of communication, in particular to a Non-Terrestrial network (NTN) -Terrestrial Network (TN) switching method, a device, equipment and a readable storage medium.
Background
Referring to fig. 1, a typical scenario in which a non-terrestrial network interworks with a terrestrial network is illustrated. In the conventional handover, a source base station makes a decision whether handover of a terminal is required according to a ratio of a measurement report result of the terminal to a measurement threshold, wherein the measurement is mainly Reference Signal Receiving Power (RSRP)/Reference Signal Receiving Quality (RSRQ), and for handover between a non-terrestrial network and a terrestrial network, the decision whether handover is performed by simply depending on the RSRP/RSRQ measurement result of the terminal may not be applicable. For example, a non-ground station is not fixed in one location as a ground station; or even though the RSRP/RSRQ of the ground station is not lower than the measurement threshold, the traffic demand of the terminal at the next moment may not be well met by the ground base station, and the handover to the non-ground base station should be considered.
Therefore, how to implement mobile service continuity between the terrestrial network and the non-terrestrial network is an urgent problem to be solved.
Disclosure of Invention
An object of the embodiments of the present application is to provide an NTN-TN handover method, an apparatus, a device, and a readable storage medium, which solve the problem of continuity of mobile services between a terrestrial network and a non-terrestrial network.
In a first aspect, an NTN-TN switching method is provided, including:
the terminal acquires the service information at the next moment;
the terminal judges whether to carry out NTN-TN switching according to the acquired service information at the next moment;
and if the NTN-TN switching is required to be carried out, the terminal sends a first message to the source base station, wherein the first message is used for requesting the NTN-TN switching.
Optionally, the method further comprises:
the terminal receives a second message from a source base station, wherein the second message carries one or more of the following items: whether the dual-connection capability with the non-ground base station is supported or not and whether the switching capability with the non-ground base station is supported or not;
the terminal selects a first ground base station to connect according to the second message, and the capability of the first ground base station comprises the following steps: the ability to support dual connectivity with non-terrestrial base stations, and the ability to support handover with non-terrestrial base stations.
Optionally, the second message further carries: information of the type of service that the non-terrestrial base station is capable of providing.
Optionally, the first message is a new MAC CE or a new RRC message.
Optionally, the first message carries one or more of: the identification of the terminal, the identification of the request needing NTN-TN switching, the service information of the next moment acquired by the terminal from an application layer, the timestamp of the service information, the QoS requirement of the terminal service, the moving speed of the terminal and the moving direction of the terminal.
In a second aspect, an NTN-TN switching method is provided, including:
a source base station receives a first message from a terminal, wherein the first message is sent when the terminal judges that NTN-TN switching is required according to the acquired service information at the next moment;
and the source base station selects a target base station for the terminal according to the first message.
Optionally, the method further comprises:
sending a second message to the terminal;
wherein the second message carries one or more of: the capability of dual connectivity with a non-terrestrial base station, and the capability of handover with a non-terrestrial base station.
Optionally, the first message is a new MAC CE or a new RRC message.
Optionally, the first message carries one or more of: the identification of the terminal, the identification of the request needing NTN-TN switching, the service information of the next moment acquired by the terminal from an application layer, the timestamp of the service information, the QoS requirement of the terminal service, the moving speed of the terminal and the moving direction of the terminal.
In a third aspect, an NTN-TN switching apparatus is provided, which is applied to a terminal, and includes:
the acquisition module is used for acquiring the service information at the next moment;
the judging module is used for judging whether NTN-TN switching is needed or not according to the acquired service information at the next moment;
and the sending module is used for sending a first message to the source base station if the NTN-TN switching is required, wherein the first message is used for requesting the NTN-TN switching.
In a fourth aspect, a terminal is provided, including: a processor, a memory and a program stored on the memory and executable on the processor, which when executed by the processor implements the steps of the method as described above.
In a fifth aspect, an NTN-TN switching apparatus is provided, which is applied to a network side device, and includes:
the receiving module is used for receiving a first message from a terminal, wherein the first message is sent when the terminal judges that NTN-TN switching is required according to the acquired service information at the next moment;
and the selection module is used for selecting the target base station for the terminal by the source base station according to the first message.
In a sixth aspect, a network-side device is provided, including: a processor, a memory and a program stored on the memory and executable on the processor, which program, when executed by the processor, carries out the steps of the method of the second aspect.
In a seventh aspect, a readable storage medium is provided, on which a program is stored, which when executed by a processor implements steps comprising the method of the first or second aspect.
In the embodiment of the application, the switching process is not triggered only by the traditional RSRP/RSRQ measurement, the NTN-TN switching is actively requested to the source base station through the service information of the terminal at the next moment acquired from the application layer, the source base station comprehensively considers the factors such as the moving speed, the moving direction and the load condition of the candidate target base station, the moving speed and the moving direction of the terminal, and the like to select the most suitable target base station for the terminal, so that the service continuity of the switching process between the non-ground network and the ground network is ensured.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the application. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
FIG. 1 is a schematic diagram of non-terrestrial network interworking with a terrestrial network;
fig. 2 is a flowchart of an NTN-TN switching method according to an embodiment of the present application;
FIG. 3 is a second flowchart of the NTN-TN switching method according to the embodiment of the present application;
fig. 4 is a third flowchart of an NTN-TN switching method according to an embodiment of the present application;
fig. 5 is a schematic diagram of an NTN-TN switching apparatus according to an embodiment of the present application;
fig. 6 is a schematic diagram of a terminal according to an embodiment of the present application;
FIG. 7 is a second schematic diagram of an NTN-TN switching apparatus according to the embodiment of the present application;
fig. 8 is a schematic diagram of a network-side device according to an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The terms "comprises," "comprising," or any other variation thereof, in the description and claims of this application, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus. Furthermore, the use of "and/or" in the specification and claims means that at least one of the connected objects, such as a and/or B, means that three cases, a alone, B alone, and both a and B, exist.
In the embodiments of the present application, words such as "exemplary" or "for example" are used to mean serving as an example, instance, or illustration. Any embodiment or design described herein as "exemplary" or "e.g.," is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, use of the word "exemplary" or "such as" is intended to present concepts related in a concrete fashion.
It is noted that the techniques described in the embodiments of the present application are not limited to Long Term Evolution (LTE)/LTE Evolution (LTE-Advanced) systems, but may also be used in other wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency-Division Multiple Access (SC-FDMA), and other systems. The terms "system" and "network" in the embodiments of the present application are often used interchangeably, and the described techniques can be used for both the above-mentioned systems and radio technologies, as well as for other systems and radio technologies. However, the following description describes a New Radio (NR) system for purposes of example, and NR terminology is used in much of the description below, although the techniques may also be applied to applications other than NR system applications, such as 6th Generation (6G) communication systems.
Referring to fig. 2, an embodiment of the present application provides an NTN-TN switching method, which includes the specific steps of: step 201, step 202 and step 203.
Step 201: the terminal acquires the service information at the next moment;
for example, the terminal obtains service information (such as satellite television, satellite phone, broadcast service, etc.) of a next time from the application layer, where the next time is a time next to the current time.
Step 202: the terminal judges whether to carry out NTN-TN switching according to the acquired service information at the next moment;
in the embodiment of the application, the service information at the next moment can reflect the service requirement of the terminal, that is, the terminal requests the NTN-TN switching according to the service requirement at the next moment, that is, the switching is not necessarily required because the service quality of the cell is deteriorated, or may be required to be switched from a ground base station to a non-ground base station because the terminal has the requirement of watching satellite television and satellite telephone; if the terminal is to send delay sensitive service, it needs to switch from non-ground base station to ground base station.
Step 203: and if the NTN-TN switching is required to be carried out, the terminal sends a first message to the source base station, wherein the first message is used for requesting the NTN-TN switching.
It is understood that the NTN-TN handover may be from a non-terrestrial base station to a terrestrial base station or from a terrestrial base station to a non-terrestrial base station.
In this embodiment of the application, the first message may be a new Media Access Control (MAC) Control Element (CE) or a new Radio Resource Control (RRC) message.
That is, in the embodiment of the present application, a new MAC CE or a new RRC message may be designed, where the RRC message includes a new NTN-TN handover request Information Element (IE) for the terminal to send an NTN-TN handover request to the source base station.
In this embodiment of the application, the first message may carry one or more of the following items:
(1) an Identification (ID) of the terminal;
(2) a request identifier for NTN-TN switching is required;
(3) the terminal acquires the service information of the next moment from the application layer;
for example, downlink service information, such as information of satellite television and broadcast services, or uplink service information, such as information of services such as satellite telephone;
(4) a timestamp of the service information;
(5) quality of Service (QoS) requirements of terminal services;
(6) the moving speed of the terminal;
(7) the direction of movement of the terminal.
Different from the traditional switching, the terminal reports the measurement result of the RSRP/RSRQ of the local cell/the adjacent cell to the source base station, and then the source base station judges whether the terminal needs to execute the switching or not according to the channel quality. The terminal requests the NTN-TN switching according to the service requirement to be sent at the next moment, that is, the switching is not necessarily required because the service quality of the cell is deteriorated, or the terminal needs to be switched from the ground base station to the non-ground base station because the terminal has the requirement of watching satellite television and satellite telephone. If the service to be sent by the terminal is an Ultra-reliable and Low-Latency Communication (URLLC) delay-sensitive service, the non-terrestrial base station needs to be switched to the terrestrial base station.
In an embodiment of the present application, the method may further include: the terminal receives a second message from the source base station, wherein the second message carries one or more of the following items: (1) whether to support dual connectivity with a non-terrestrial base station; (2) whether to support handover with a non-terrestrial base station; the terminal selects a first ground base station to connect according to the second message, and the capability of the first ground base station comprises the following steps: (1) the ability to support dual connectivity with non-terrestrial base stations, and (2) the ability to support handover with non-terrestrial base stations. That is, the ground base station issues the capability of whether to support dual connection with the non-ground base station and the capability of whether to support handover with the non-ground base station in the broadcast message, and the terminal preferentially selects to connect with the ground base station supporting the above two capabilities.
Optionally, the second message further carries: information of the type of service that the non-terrestrial base station is capable of providing.
It is understood that the second message may be a broadcast message, the terrestrial base station (source base station) may issue, in the broadcast message, whether to support dual connectivity with the non-terrestrial base station, and whether to support handover with the non-terrestrial base station, and the terminal preferentially selects to connect with the terrestrial base station that supports both of the capabilities. Further, the broadcast message may also carry service type information that the non-terrestrial base station can provide.
In the embodiment of the present application, in order to reduce the data transmission interruption time to maintain service continuity as much as possible, after the NTN-TN handover is performed on the selected target base station, a Dual Active Protocol Stack (DAPS) handover process may be referred to in a subsequent handover process.
In the embodiment of the application, a handover process is triggered no longer only by means of traditional RSRP/RSRQ measurement, and an NTN-TN handover is actively requested from a source base station through service information and a timestamp of the next moment acquired by a terminal from an application layer, the source base station selects a most suitable handover target base station for the terminal by comprehensively considering factors such as the moving speed, the moving direction of the terminal, the load condition of candidate target base stations, the moving speed and the moving direction, and the like, and the service continuity of the handover process between a non-ground network and a ground network is ensured as much as possible by combining with a DAPS handover process.
Referring to fig. 3, an embodiment of the present application provides an NTN-TN switching method, which includes the specific steps of: step 301, step 302.
Step 301: and the source base station receives a first message from the terminal, wherein the first message is sent when the terminal judges that the NTN-TN switching is required according to the acquired service information at the next moment.
Step 303: and the source base station selects a target base station for the terminal according to the first message.
For example, the source base station may select a most suitable target base station for handover for the terminal according to the requirement of the terminal and by comprehensively considering factors such as load conditions, moving speed, moving direction, and the like of possible candidate target base stations. Optionally, a target base station with the same moving direction and the smallest relative moving speed difference between the terminal and the target base station is selected.
In this embodiment of the present application, the first message is a new MAC CE or a new RRC message. That is, after the source base station receives and successfully decodes the NTN-TN handover request MAC CE or RRC message, the source base station selects a most suitable target base station for the terminal according to the requirements of the terminal and by comprehensively considering factors such as load conditions, moving speed, moving direction, and the like of possible candidate target base stations.
In an embodiment of the present application, the first message carries one or more of the following: the identification of the terminal, the identification of the request for NTN-TN switching, the service information of the next moment acquired by the terminal from the application layer, the timestamp of the service information, the QoS requirement of the terminal service, the moving speed of the terminal and the moving direction of the terminal.
For some terminals in the coverage overlapping area of the ground station and the non-ground station, the selection of the target base station suitable for handover may be selected according to the moving speed and moving direction of the terminal and the possible target base station, for example, in the case that the terminal is near the sea, if the moving direction of the terminal is near the sea, the terminal should be handed over to the non-ground station because the ground station cannot cover the sea, and according to the moving speed and moving direction of the terminal and the non-ground station, the non-ground station with the same moving direction and the smallest relative moving speed difference should be selected, otherwise (the moving direction of the terminal is far from the sea), the terminal should be handed over to the ground station.
In an embodiment of the present application, the method further includes: a second message is sent to the terminal and,
wherein the second message carries one or more of: (1) the capability of whether to support dual connectivity with a non-terrestrial base station, (2) the capability of whether to support handover with a non-terrestrial base station; further, the second message may also carry: information of the type of service that the non-terrestrial base station is capable of providing.
In the embodiment of the application, a handover process is triggered no longer only by means of traditional RSRP/RSRQ measurement, and an NTN-TN handover is actively requested from a source base station through service information and a timestamp of the next moment acquired by a terminal from an application layer, the source base station selects a most suitable handover target base station for the terminal by comprehensively considering factors such as the moving speed, the moving direction of the terminal, the load condition of candidate target base stations, the moving speed and the moving direction, and the like, and the service continuity of the handover process between a non-ground network and a ground network is ensured as much as possible by combining with a DAPS handover process.
Referring to fig. 4, the specific steps include step 1 to step 8.
Step 1: the ground base station issues the capability of supporting double connection with the non-ground base station and the capability of switching with the non-ground base station in the broadcast message, the terminal preferentially selects to be connected with the ground base station supporting the two capabilities, and the broadcast message also needs to carry the service type information which can be provided by the non-ground base station;
step 2: the terminal preferentially selects to be connected with the ground base station supporting the two capabilities in the step 1;
and step 3: the source base station performs measurement control on the terminal;
and 4, step 4: data transmission between the terminal and the source base station;
and 5: the terminal sends a measurement report to a source base station;
it should be noted that step 3 to step 5 are conventional mechanisms.
Step 6: and the terminal judges whether to carry out NTN-TN switching according to the service information at the next moment acquired from the application layer, and if the NTN-TN switching is required, the terminal sends an MAC CE for carrying out an NTN-TN switching request or a new NTN-TN switching request RRC message to the source base station.
And 7: after receiving the NTN-TN switching request MAC CE or the NTN-TN switching request RRC message, the source base station comprehensively considers factors such as the load condition of possible candidate target base stations, the moving direction of the moving speed and the like to select a most suitable target base station for the terminal;
for example, the target base station with the terminal moving in the same direction and the smallest relative moving speed difference with the target base station is selected.
And 8: in order to reduce the data transmission interruption time to maintain service continuity as much as possible, the subsequent handover execution process refers to the DAPS handover process after the target base station is selected for the NTN-TN handover.
Referring to fig. 5, an embodiment of the present application provides an NTN-TN switching apparatus 500, which is applied to a terminal and includes:
an obtaining module 501, configured to obtain service information at a next time;
a judging module 502, configured to judge whether to perform NTN-TN switching according to the acquired service information at the next time;
a sending module 503, configured to send a first message to the source base station if the NTN-TN inter-switching needs to be performed, where the first message is used to request the NTN-TN switching.
In an embodiment of the present application, the apparatus further includes:
a receiving module, configured to receive a second message from a source base station, where the second message carries one or more of the following: (1) the capability of whether to support dual connectivity with a non-terrestrial base station, (2) the capability of whether to support handover with a non-terrestrial base station;
a selection module configured to select a first terrestrial base station connection according to a second message, wherein the capability of the first terrestrial base station includes: the ability to support dual connectivity with non-terrestrial base stations, and the ability to support handover with non-terrestrial base stations.
In this embodiment of the application, the second message may further carry one or more of the following items: information of the type of service that the non-terrestrial base station is capable of providing.
In this embodiment of the present application, the first message is a new MAC CE or a new RRC message.
In an embodiment of the present application, the first message carries one or more of the following: (1) the mobile terminal comprises (1) an identifier of the terminal, (2) a request identifier for NTN-TN switching, (3) service information of the next moment acquired by the terminal from an application layer, (4) a timestamp of the service information, (5) QoS (quality of service) requirements of terminal services, (6) the mobile speed of the terminal, and (7) the mobile direction of the terminal.
The terminal provided in the embodiment of the present application can implement each process implemented by the method embodiment shown in fig. 3, and achieve the same technical effect, and for avoiding repetition, details are not described here again.
The NTN-TN switching device provided in the embodiment of the present application can implement each process implemented by the method embodiment shown in fig. 2, and achieve the same technical effect, and is not described here again to avoid repetition.
Fig. 6 is a schematic diagram of a hardware structure of a terminal for implementing the embodiment of the present application.
The terminal 600 includes but is not limited to: a radio frequency unit 601, a network module 602, an audio output unit 603, an input unit 604, a sensor 605, a display unit 606, a user input unit 607, an interface unit 608, a memory 609, a processor 610, and the like.
Those skilled in the art will appreciate that the terminal 600 may further include a power supply (e.g., a battery) for supplying power to various components, and the power supply may be logically connected to the processor 610 through a power management system, so as to implement functions of managing charging, discharging, and power consumption through the power management system. The terminal structure shown in fig. 6 does not constitute a limitation of the terminal, and the terminal may include more or less components than those shown, or combine some components, or have a different arrangement of components, and will not be described again here.
It is to be understood that, in the embodiment of the present application, the input Unit 604 may include a Graphics Processing Unit (GPU) 6041 and a microphone 6042, and the Graphics Processing Unit 6041 processes image data of a still picture or a video obtained by an image capturing apparatus (such as a camera) in a video capturing mode or an image capturing mode. The display unit 606 may include a display panel 6061, and the display panel 6061 may be configured in the form of a liquid crystal display, an organic light emitting diode, or the like. The user input unit 607 includes a touch panel 6071 and other input devices 6072. A touch panel 6071, also referred to as a touch screen. The touch panel 6071 may include two parts of a touch detection device and a touch controller. Other input devices 6072 may include, but are not limited to, a physical keyboard, function keys (e.g., volume control keys, switch keys, etc.), a trackball, a mouse, and a joystick, which are not described in detail herein.
In the embodiment of the present application, the radio frequency unit 601 receives downlink data from a network side device and then processes the downlink data in the processor 610; in addition, the uplink data is sent to the network side equipment. In general, radio frequency unit 601 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like.
The memory 609 may be used to store software programs or instructions as well as various data. The memory 609 may mainly include a program or instruction storage area and a data storage area, wherein the program or instruction storage area may store an operating system, an application program or instruction (such as a sound playing function, an image playing function, etc.) required for at least one function, and the like. Further, the Memory 609 may include a high-speed random access Memory, and may further include a nonvolatile Memory, wherein the nonvolatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable Programmable PROM (EPROM), an Electrically Erasable Programmable ROM (EEPROM), or a flash Memory. Such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid state storage device.
The terminal provided in the embodiment of the present application can implement each process implemented by the method embodiment shown in fig. 2, and achieve the same technical effect, and for avoiding repetition, details are not described here again.
Referring to fig. 7, an embodiment of the present application provides an NTN-TN switching apparatus, which is applied to a network side device, and includes:
a receiving module 701, configured to receive a first message from a terminal, where the first message is sent when the terminal determines that switching between NTN-TN is required according to the acquired service information at the next time;
a selecting module 702, configured to select, by the source base station, the target base station for the terminal according to the first message.
In this embodiment of the application, the NTN-TN switching apparatus further includes:
a sending module, configured to send a second message to the terminal;
wherein the second message carries one or more of: whether the dual-connection capability with the non-ground base station is supported or not and whether the switching capability with the non-ground base station is supported or not; the second message may also carry information on the type of service that the non-terrestrial base station is capable of providing.
In this embodiment of the present application, the first message is a new MAC CE or a new RRC message.
In an embodiment of the present application, the first message carries one or more of the following: (1) the mobile terminal comprises (1) an identifier of the terminal, (2) a request identifier for NTN-TN switching, (3) service information of the next moment acquired by the terminal from an application layer, (4) a timestamp of the service information, (5) QoS (quality of service) requirements of terminal services, (6) the mobile speed of the terminal, and (7) the mobile direction of the terminal.
The NTN-TN switching device provided in the embodiment of the present application can implement each process implemented by the method embodiment shown in fig. 3, and achieve the same technical effect, and is not described here again to avoid repetition.
The embodiment of the application also provides network side equipment. As shown in fig. 8, the network-side device 800 includes: antenna 801, radio frequency device 802, baseband device 803. The antenna 801 is connected to a radio frequency device 802. In the uplink direction, the rf device 802 receives information via the antenna 801 and sends the received information to the baseband device 803 for processing. In the downlink direction, the baseband device 803 processes information to be transmitted and transmits the information to the radio frequency device 802, and the radio frequency device 802 processes the received information and transmits the processed information through the antenna 801.
The above band processing means may be located in the baseband means 803, and the method performed by the network side device in the above embodiment may be implemented in the baseband means 803, where the baseband means 803 includes a processor 804 and a memory 805.
The baseband apparatus 803 may include, for example, at least one baseband board, on which a plurality of chips are disposed, as shown in fig. 8, where one chip, for example, the processor 804, is connected to the memory 805 to call up the program in the memory 805 to perform the network device operations shown in the above method embodiments.
The baseband device 803 may further include a network interface 806, such as a Common Public Radio Interface (CPRI), for exchanging information with the radio frequency device 802.
Specifically, the network side device of the embodiment of the present invention further includes: the instructions or programs stored in the memory 805 and capable of being executed on the processor 804, and the processor 804 calls the instructions or programs in the memory 805 to execute the methods executed by the modules shown in fig. 8, and achieve the same technical effects, which are not described herein for avoiding repetition.
The network side device provided in the embodiment of the present application can implement each process implemented by the method embodiment shown in fig. 3, and achieve the same technical effect, and for avoiding repetition, details are not described here again.
An embodiment of the present application further provides a readable storage medium, where a program or an instruction is stored on the readable storage medium, and when the program or the instruction is executed by a processor, the program or the instruction implements each process of the method embodiment shown in fig. 2 or fig. 3, and can achieve the same technical effect, and in order to avoid repetition, details are not repeated here.
Wherein, the processor is the processor in the terminal described in the above embodiment. The readable storage medium includes a computer readable storage medium, such as a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and so on.
The steps of a method or algorithm described in connection with the disclosure herein may be embodied in hardware or may be embodied in software instructions executed by a processor. The software instructions may consist of corresponding software modules that may be stored in RAM, flash memory, ROM, EPROM, EEPROM, registers, hard disk, a removable hard disk, a compact disk, or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor such the processor can read information from, and write information to, the storage medium. Of course, the storage medium may also be integral to the processor. The processor and the storage medium may reside in an ASIC. In addition, the ASIC may be carried in a core network interface device. Of course, the processor and the storage medium may reside as discrete components in a core network interface device.
Those skilled in the art will recognize that in one or more of the examples described above, the functions described herein may be implemented in hardware, software, firmware, or any combination thereof. When implemented in software, the functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Computer-readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. A storage media may be any available media that can be accessed by a general purpose or special purpose computer.
The above-mentioned embodiments, objects, technical solutions and advantages of the present application are further described in detail, it should be understood that the above-mentioned embodiments are only examples of the present application, and are not intended to limit the scope of the present application, and any modifications, equivalent substitutions, improvements and the like made on the basis of the technical solutions of the present application should be included in the scope of the present application.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, embodiments of the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, embodiments of the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
Embodiments of the present application are described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
It will be apparent to those skilled in the art that various changes and modifications may be made in the embodiments of the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the embodiments of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to encompass such modifications and variations.
Claims (14)
1. A non-terrestrial network NTN-terrestrial network TN switching method is characterized by comprising the following steps:
the terminal acquires the service information at the next moment;
the terminal judges whether to carry out NTN-TN switching according to the acquired service information at the next moment;
and if the NTN-TN switching is required to be carried out, the terminal sends a first message to the source base station, wherein the first message is used for requesting the NTN-TN switching.
2. The method of claim 1, further comprising:
the terminal receives a second message from a source base station, wherein the second message carries one or more of the following items: whether the dual-connection capability with the non-ground base station is supported or not and whether the switching capability with the non-ground base station is supported or not;
the terminal selects a first ground base station to connect according to the second message, and the capability of the first ground base station comprises the following steps: the ability to support dual connectivity with non-terrestrial base stations, and the ability to support handover with non-terrestrial base stations.
3. The method of claim 2, wherein the second message further carries: information of the type of service that the non-terrestrial base station is capable of providing.
4. The method of claim 1, wherein the first message is a new media access control layer control element (MAC CE) or a new Radio Resource Control (RRC) message.
5. The method of claim 1, wherein the first message carries one or more of: the identification of the terminal, the identification of the request needing NTN-TN switching, the service information of the next moment acquired by the terminal from an application layer, the timestamp of the service information, the QoS requirement of the terminal service, the moving speed of the terminal and the moving direction of the terminal.
6. An NTN-TN switching method is characterized by comprising the following steps:
a source base station receives a first message from a terminal, wherein the first message is sent when the terminal judges that NTN-TN switching is required according to the acquired service information at the next moment;
and the source base station selects a target base station for the terminal according to the first message.
7. The method of claim 6, further comprising:
sending a second message to the terminal;
wherein the second message carries one or more of: the capability of dual connectivity with a non-terrestrial base station, and the capability of handover with a non-terrestrial base station.
8. The method of claim 6, wherein the first message is a new MAC CE or a new RRC message.
9. The method of claim 6, wherein the first message carries one or more of: the identification of the terminal, the identification of the request needing NTN-TN switching, the service information of the next moment acquired by the terminal from an application layer, the timestamp of the service information, the QoS requirement of the terminal service, the moving speed of the terminal and the moving direction of the terminal.
10. An NTN-TN switching device, applied to a terminal, is characterized by comprising:
the acquisition module is used for acquiring the service information at the next moment;
the judging module is used for judging whether NTN-TN switching is needed or not according to the acquired service information at the next moment;
and the sending module is used for sending a first message to the source base station if the NTN-TN switching is required, wherein the first message is used for requesting the NTN-TN switching.
11. A terminal, comprising: processor, memory and program stored on the memory and executable on the processor, which when executed by the processor implements the steps of the method according to any of claims 1-5.
12. An NTN-TN switching apparatus applied to a network side device, comprising:
the receiving module is used for receiving a first message from a terminal, wherein the first message is sent when the terminal judges that NTN-TN switching is required according to the acquired service information at the next moment;
and the selection module is used for selecting the target base station for the terminal by the source base station according to the first message.
13. A network-side device, comprising: processor, memory and program stored on the memory and executable on the processor, which when executed by the processor implements the steps of the method according to any one of claims 6 to 9.
14. A readable storage medium, characterized in that it has stored thereon a program which, when being executed by a processor, carries out steps comprising the method according to any one of claims 1 to 9.
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115134883A (en) * | 2022-06-27 | 2022-09-30 | 国网青海省电力公司信息通信公司 | Signal switching method and device and electronic equipment |
| CN116419360A (en) * | 2023-06-06 | 2023-07-11 | 成都爱瑞无线科技有限公司 | Mobility management method, device and storage medium of general sense integrated system |
| WO2023130245A1 (en) * | 2022-01-05 | 2023-07-13 | Oppo广东移动通信有限公司 | Communication methods, terminal devices and network devices |
| WO2023216067A1 (en) * | 2022-05-09 | 2023-11-16 | 北京小米移动软件有限公司 | Information transmission method and apparatus, and storage medium |
| WO2024031364A1 (en) * | 2022-08-09 | 2024-02-15 | Apple Inc. | Switching between non-terrestrial network and terrestrial network |
| WO2024099190A1 (en) * | 2022-11-07 | 2024-05-16 | 维沃移动通信有限公司 | Capability indication method and apparatus, terminal, network side device, and readable storage medium |
| WO2024125370A1 (en) * | 2022-12-13 | 2024-06-20 | 华为技术有限公司 | Communication method and communication apparatus |
| CN118354472A (en) * | 2024-05-11 | 2024-07-16 | 湖南驰众机器人股份有限公司 | AGV communication management method based on 5G communication network |
| WO2024164310A1 (en) * | 2023-02-10 | 2024-08-15 | Apple Inc. | Ue operation on ntn tn cell reselection |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB201812978D0 (en) * | 2018-08-09 | 2018-09-26 | Samsung Electronics Co Ltd | Method and apparatus for signalling for group handover or cell re-selection in non-terrestrial networks |
| CN111108776A (en) * | 2017-07-21 | 2020-05-05 | 弗劳恩霍夫应用研究促进协会 | Wireless communication system and method for handling enhanced handover of wireless communication |
| US20200178135A1 (en) * | 2018-12-03 | 2020-06-04 | Electronics And Telecommunications Research Institute | Method for handover in non-terrestrial network, and apparatus for the same |
| KR20200071004A (en) * | 2018-12-10 | 2020-06-18 | 한국전자통신연구원 | Method for handover in non-terrestrial network, and apparatus for the same |
| CN111565427A (en) * | 2019-02-14 | 2020-08-21 | 华为技术有限公司 | Network selection method, network equipment and terminal equipment |
-
2020
- 2020-09-09 CN CN202010939976.0A patent/CN114245425A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111108776A (en) * | 2017-07-21 | 2020-05-05 | 弗劳恩霍夫应用研究促进协会 | Wireless communication system and method for handling enhanced handover of wireless communication |
| GB201812978D0 (en) * | 2018-08-09 | 2018-09-26 | Samsung Electronics Co Ltd | Method and apparatus for signalling for group handover or cell re-selection in non-terrestrial networks |
| US20200178135A1 (en) * | 2018-12-03 | 2020-06-04 | Electronics And Telecommunications Research Institute | Method for handover in non-terrestrial network, and apparatus for the same |
| KR20200071004A (en) * | 2018-12-10 | 2020-06-18 | 한국전자통신연구원 | Method for handover in non-terrestrial network, and apparatus for the same |
| CN111565427A (en) * | 2019-02-14 | 2020-08-21 | 华为技术有限公司 | Network selection method, network equipment and terminal equipment |
Non-Patent Citations (1)
| Title |
|---|
| ZTE CORPORATION, SANECHIPS: "R2-1906265 "Mobility management in NTN"", 3GPP TSG_RAN\\WG2_RL2, no. 2, 2 May 2019 (2019-05-02) * |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023130245A1 (en) * | 2022-01-05 | 2023-07-13 | Oppo广东移动通信有限公司 | Communication methods, terminal devices and network devices |
| WO2023216067A1 (en) * | 2022-05-09 | 2023-11-16 | 北京小米移动软件有限公司 | Information transmission method and apparatus, and storage medium |
| CN115134883A (en) * | 2022-06-27 | 2022-09-30 | 国网青海省电力公司信息通信公司 | Signal switching method and device and electronic equipment |
| WO2024031364A1 (en) * | 2022-08-09 | 2024-02-15 | Apple Inc. | Switching between non-terrestrial network and terrestrial network |
| WO2024099190A1 (en) * | 2022-11-07 | 2024-05-16 | 维沃移动通信有限公司 | Capability indication method and apparatus, terminal, network side device, and readable storage medium |
| WO2024125370A1 (en) * | 2022-12-13 | 2024-06-20 | 华为技术有限公司 | Communication method and communication apparatus |
| WO2024164310A1 (en) * | 2023-02-10 | 2024-08-15 | Apple Inc. | Ue operation on ntn tn cell reselection |
| CN116419360A (en) * | 2023-06-06 | 2023-07-11 | 成都爱瑞无线科技有限公司 | Mobility management method, device and storage medium of general sense integrated system |
| CN116419360B (en) * | 2023-06-06 | 2023-09-19 | 成都爱瑞无线科技有限公司 | Mobility management method, device and storage medium of general sense integrated system |
| CN118354472A (en) * | 2024-05-11 | 2024-07-16 | 湖南驰众机器人股份有限公司 | AGV communication management method based on 5G communication network |
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