CN113905420A - Terminal switching method, equipment and medium - Google Patents

Terminal switching method, equipment and medium Download PDF

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Publication number
CN113905420A
CN113905420A CN202010573068.4A CN202010573068A CN113905420A CN 113905420 A CN113905420 A CN 113905420A CN 202010573068 A CN202010573068 A CN 202010573068A CN 113905420 A CN113905420 A CN 113905420A
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China
Prior art keywords
ground network
network cell
terminal
cell
ground
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CN202010573068.4A
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Chinese (zh)
Inventor
康绍莉
缪德山
孙建成
孙韶辉
王映民
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Datang Mobile Communications Equipment Co Ltd
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Datang Mobile Communications Equipment Co Ltd
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Priority to CN202010573068.4A priority Critical patent/CN113905420A/en
Priority to PCT/CN2021/101160 priority patent/WO2021259181A1/en
Publication of CN113905420A publication Critical patent/CN113905420A/en
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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
    • H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection
    • H04W36/0016—Hand-off preparation specially adapted for end-to-end data sessions
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • 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
    • H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection
    • H04W36/0033—Control or signalling for completing the hand-off for data sessions of end-to-end connection with transfer of context information
    • 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
    • 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
    • H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
    • H04W36/0085—Hand-off measurements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/24—Reselection being triggered by specific parameters
    • H04W36/30—Reselection being triggered by specific parameters by measured or perceived connection quality data
    • H04W36/302—Reselection being triggered by specific parameters by measured or perceived connection quality data due to low signal strength
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/24—Reselection being triggered by specific parameters
    • H04W36/32—Reselection being triggered by specific parameters by location or mobility data, e.g. speed data
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/14—Reselecting a network or an air interface

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The invention discloses a terminal switching method, equipment and a medium, comprising the following steps: a network side acquires communication parameters of a terminal; and the network side instructs the terminal to switch from the current non-ground network cell to the ground network cell or instructs the terminal to switch from the ground network cell to the non-ground network cell according to the communication parameters and a preset switching strategy. By adopting the method and the device, the terminal can be flexibly switched between the ground network and the non-ground network, so that the terminal can select a proper network for communication according to different conditions and scenes, and the user experience is improved.

Description

Terminal switching method, equipment and medium
Technical Field
The present invention relates to the field of wireless communications technologies, and in particular, to a terminal switching method, device, and medium.
Background
The 5G-based satellite-ground fusion technology can promote the development of both ground networks and non-ground networks represented by satellites. For the future, a terrestrial network and a non-terrestrial network based on 5G or enhanced technology will exist simultaneously, and more handheld terminals will support 2 modes of the terrestrial network and the non-terrestrial network simultaneously.
The ground network and the non-ground network have advantages and disadvantages respectively. The ground network can provide voice and data transmission services with low time delay, high reliability and high speed for the terminal, but the construction cost of the ground network is high, and the coverage range is relatively limited although the population covered is large. The non-ground network has the advantages of wide coverage range, good survivability and the like, and can also provide broadband service for the terminal, so that the non-ground network can be used as supplementary coverage of the ground network and can be combined with the ground network to provide better user experience for users.
When the handheld terminal supporting the non-ground network and the ground network is accessed in the non-ground network, the handheld terminal can obtain the support of wide area coverage and can perform data transmission service with medium speed; and when the ground covers a better area, the wireless sensor can be connected to a ground network to realize high-speed and low-delay data transmission. Therefore, how to realize flexible switching of the handheld terminal between the non-terrestrial network and the terrestrial network to ensure the success rate of switching and the continuity of service is a crucial technical problem.
The prior art is not enough, and no relevant solution exists at present.
Disclosure of Invention
The invention provides a terminal switching method, equipment and a medium, which are used for flexibly switching a terminal between a non-ground network and a ground network aiming at a handheld terminal simultaneously supporting the non-ground network and the ground network so as to ensure the switching success rate and the continuity of services.
The embodiment of the invention provides a terminal switching method, which comprises the following steps:
a network side acquires communication parameters of a terminal;
and the network side instructs the terminal to switch from the current non-ground network cell to the ground network cell or instructs the terminal to switch from the ground network cell to the non-ground network cell according to the communication parameters and a preset switching strategy.
In implementation, the preset handover policy includes one or a combination of the following policies:
the RRM measured value of the non-ground network cell is lower than a first threshold value, and the RRM measured value of the ground network cell is higher than a second threshold value, and the terminal is instructed to be switched to the ground network cell from the current non-ground network cell; or the like, or, alternatively,
the terminal continues to provide connection service for the user at the edge of the non-ground network cell and the non-ground network has no new aerospace device, and the RRM measured value of the ground network cell is higher than a third threshold value, and the terminal is instructed to be switched to the ground network cell from the current non-ground network cell; or the like, or, alternatively,
the CQI of the ground network cell is better than a fourth threshold value, and the terminal is instructed to be switched to the ground network cell from the current non-ground network cell; or the like, or, alternatively,
when the two non-ground networks interfere with each other in the same coverage area, the terminal is instructed to switch from the non-ground network cell to the ground network cell; or the like, or, alternatively,
the RRM measured value of the ground network cell is lower than a fifth threshold value, and the RRM measured value of the non-ground network cell is higher than a sixth threshold value, and the terminal is instructed to be switched from the ground network cell to the non-ground network cell; or the like, or, alternatively,
the currently serving ground network cell has no adjacent ground network cell, and the RRM measurement of the non-ground network cell is higher than a seventh threshold value, and the terminal is instructed to switch from the ground network cell to the non-ground network cell; or the like, or, alternatively,
and the moving speed of the terminal exceeds an eighth threshold value, and the terminal is instructed to be switched from the ground network cell to the non-ground network cell.
In an implementation, the method further comprises the following steps:
and receiving the communication parameters reported by the terminal.
In an implementation, the communication parameters include one or a combination of the following parameters:
location information, velocity information, RRM measurement values of the serving cell, RRM measurement values of the target cell, CQI information of the serving cell, CQI information of the target cell.
The embodiment of the invention provides a terminal switching method, which comprises the following steps:
the terminal receives a switching instruction of a network side;
and the terminal switches from the current non-ground network cell to the ground network cell or switches from the ground network cell to the non-ground network cell according to the switching indication.
In an implementation, the method further comprises the following steps:
and the terminal reports the communication parameters to the network side.
In an implementation, the communication parameters include one or a combination of the following parameters:
location information, velocity information, RRM measurement values of the serving cell, RRM measurement values of the target cell, CQI information of the serving cell, CQI information of the target cell.
An embodiment of the present invention provides a network side device, including:
a processor for reading the program in the memory, performing the following processes:
acquiring communication parameters of a terminal;
according to the communication parameters and a preset switching strategy, instructing the terminal to switch from the current non-ground network cell to the ground network cell, or instructing the terminal to switch from the ground network cell to the non-ground network cell;
a transceiver for receiving and transmitting data under the control of the processor.
In implementation, the preset handover policy includes one or a combination of the following policies:
the RRM measured value of the non-ground network cell is lower than a first threshold value, and the RRM measured value of the ground network cell is higher than a second threshold value, and the terminal is instructed to be switched to the ground network cell from the current non-ground network cell; or the like, or, alternatively,
the terminal continues to provide connection service for the user at the edge of the non-ground network cell and the non-ground network has no new aerospace device, and the RRM measured value of the ground network cell is higher than a third threshold value, and the terminal is instructed to be switched to the ground network cell from the current non-ground network cell; or the like, or, alternatively,
the CQI of the ground network cell is better than a fourth threshold value, and the terminal is instructed to be switched to the ground network cell from the current non-ground network cell; or the like, or, alternatively,
when the two non-ground networks interfere with each other in the same coverage area, the terminal is instructed to switch from the non-ground network cell to the ground network cell; or the like, or, alternatively,
the RRM measured value of the ground network cell is lower than a fifth threshold value, and the RRM measured value of the non-ground network cell is higher than a sixth threshold value, and the terminal is instructed to be switched from the ground network cell to the non-ground network cell; or the like, or, alternatively,
the currently serving ground network cell has no adjacent ground network cell, and the RRM measurement of the non-ground network cell is higher than a seventh threshold value, and the terminal is instructed to switch from the ground network cell to the non-ground network cell; or the like, or, alternatively,
and the moving speed of the terminal exceeds an eighth threshold value, and the terminal is instructed to be switched from the ground network cell to the non-ground network cell.
In an implementation, the method further comprises the following steps:
and receiving the communication parameters reported by the terminal.
In an implementation, the communication parameters include one or a combination of the following parameters:
location information, velocity information, RRM measurement values of the serving cell, RRM measurement values of the target cell, CQI information of the serving cell, CQI information of the target cell.
An embodiment of the present invention provides a terminal, including:
a processor for reading the program in the memory, performing the following processes:
receiving a switching instruction of a network side;
switching from the current non-ground network cell to a ground network cell or switching from the ground network cell to the non-ground network cell according to the switching indication;
a transceiver for receiving and transmitting data under the control of the processor.
In an implementation, the method further comprises the following steps:
and reporting the communication parameters to a network side.
In an implementation, the communication parameters include one or a combination of the following parameters:
location information, velocity information, RRM measurement values of the serving cell, RRM measurement values of the target cell, CQI information of the serving cell, CQI information of the target cell.
The embodiment of the invention provides a terminal switching device, which comprises:
the acquisition module is used for acquiring communication parameters of the terminal;
and the indicating module is used for indicating the terminal to be switched from the current non-ground network cell to the ground network cell or indicating the terminal to be switched from the ground network cell to the non-ground network cell according to the communication parameters and a preset switching strategy.
The embodiment of the invention provides a terminal switching device, which comprises:
a receiving module, configured to receive a handover indication of a network side;
and the switching module is used for switching from the current non-ground network cell to the ground network cell or switching from the ground network cell to the non-ground network cell according to the switching indication.
The embodiment of the invention provides a computer readable storage medium, which stores a computer program for executing the terminal switching method.
The invention has the following beneficial effects:
in the technical scheme provided by the embodiment of the invention, the terminal can be instructed to switch from the current non-ground network cell to the ground network cell or from the ground network cell to the non-ground network cell by the network side according to the communication parameters and the preset switching strategy, so that the terminal can be flexibly switched between the ground network and the non-ground network, and the terminal can select a proper network to communicate according to different conditions and scenes, thereby improving the user experience.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic flow chart illustrating an implementation of a terminal switching method on a network side according to an embodiment of the present invention;
fig. 2 is a schematic view of an implementation flow of a terminal switching method at a terminal side in an embodiment of the present invention;
fig. 3 is a schematic diagram of hybrid coverage of a satellite network cell and a terrestrial network cell according to embodiment 2 of the present invention;
fig. 4 is a schematic diagram of avoiding satellite signals in the same frequency band in embodiment 2 of the present invention;
fig. 5 is a schematic structural diagram of a network-side device in an embodiment of the present invention;
fig. 6 is a schematic diagram of a terminal structure in an embodiment of the present invention.
Detailed Description
For a handheld terminal supporting both a non-ground network and a ground network, the embodiment of the invention provides a switching scheme of the terminal between the ground network and the non-ground network, so as to ensure the switching success rate and the continuity of services and improve the user experience and the network efficiency.
The following describes embodiments of the present invention with reference to the drawings.
In the process of description, the implementation of the terminal and the network side will be described separately, and then an example of the implementation of the terminal and the network side in cooperation will be given to better understand the implementation of the scheme given in the embodiment of the present invention. Such an explanation does not mean that the two must be implemented in cooperation or separately, and actually, when the terminal and the network side are implemented separately, the problems on the terminal side and the base station side are solved separately, and when the two are used in combination, a better technical effect is obtained.
Fig. 1 is a schematic flow chart of an implementation process of a terminal switching method on a network side, as shown in the figure, the implementation process may include:
step 101, a network side acquires communication parameters of a terminal;
and 102, the network side instructs the terminal to switch from the current non-ground network cell to the ground network cell or instructs the terminal to switch from the ground network cell to the non-ground network cell according to the communication parameters and a preset switching strategy.
Specifically, the network side may be as follows:
1) and the network side predicts ephemeris and orbit topology information of other non-ground systems in the same frequency band with the non-ground network.
2) And the network side informs the terminal of RRM measurement configuration information in the non-ground network cell or the ground network cell.
3) The network side receives the reported position information, speed information, RRM measurement values (RSRP, RSRQ, etc.) of the terminal.
4) The network obtains ephemeris and orbit topology information of the aerospace device of the non-ground network.
5) And a plurality of RRM measurement thresholds are set by the network side, and configuration is respectively carried out on the non-ground network cells and the ground network cells.
6) And the network configures information such as a speed threshold, a CQI threshold and the like when switching judgment is carried out.
7) And the network side carries out comprehensive judgment based on the information report of the terminal and the ephemeris information of the aerospace equipment of the non-ground network, and informs the terminal whether to switch from the current non-ground network cell to the ground network cell or from the ground network cell to the non-ground network cell.
Fig. 2 is a schematic flow chart of an implementation process of a terminal switching method at a terminal side, as shown in the figure, the implementation process may include:
step 201, a terminal receives a switching instruction of a network side;
and 202, the terminal switches from the current non-ground network cell to the ground network cell or switches from the ground network cell to the non-ground network cell according to the switching indication.
In the implementation, the method can further comprise the following steps:
and the terminal reports the communication parameters to the network side.
Correspondingly, the method may further include, for the network side:
and receiving the communication parameters reported by the terminal.
In a specific implementation, the communication parameters may include one or a combination of the following parameters:
location information, speed information, RRM (Radio Resource Management) measurement value of the serving cell, RRM measurement value of the target cell, CQI (Channel Quality Indicator) information of the serving cell, CQI information of the target cell. The RRM measurement value may be RSRP (Reference Signal Received Power), RSRQ (Reference Signal Received Quality), or the like.
Specifically, the terminal side may be as follows:
1) the terminal monitors the reference signals of the non-ground network cells or the ground network cells of the current service and the subsequent targets, RRM measurement is carried out and reported to the network, and RRM measurement values comprise measurement values such as RSRP, RSRQ and the like.
2) The terminal measures its own moving speed and reports it to the network.
3) And the terminal reports the CQI information of the serving cell and the target cell to the network.
4) And the terminal receives ephemeris information of the non-ground network cell to be measured configured by the network or performs tracking and signal measurement on the non-ground network cell based on the ephemeris information stored by the terminal.
5) And after receiving the switching signaling of the network, the terminal executes the switching process from the non-ground network cell to the ground network cell or from the ground network cell to the non-ground network cell.
The preset handover strategy will be explained below.
In implementation, the preset handover policy includes one or a combination of the following policies:
the RRM measured value of the non-ground network cell is lower than a first threshold value, and the RRM measured value of the ground network cell is higher than a second threshold value, and the terminal is instructed to be switched to the ground network cell from the current non-ground network cell; or the like, or, alternatively,
the terminal continues to provide connection service for the user at the edge of the non-ground network cell and the non-ground network has no new aerospace device, and the RRM measured value of the ground network cell is higher than a third threshold value, and the terminal is instructed to be switched to the ground network cell from the current non-ground network cell; or the like, or, alternatively,
the CQI of the ground network cell is better than a fourth threshold value, and the terminal is instructed to be switched to the ground network cell from the current non-ground network cell; or the like, or, alternatively,
when the two non-ground networks interfere with each other in the same coverage area, the terminal is instructed to switch from the non-ground network cell to the ground network cell; or the like, or, alternatively,
the RRM measured value of the ground network cell is lower than a fifth threshold value, and the RRM measured value of the non-ground network cell is higher than a sixth threshold value, and the terminal is instructed to be switched from the ground network cell to the non-ground network cell; or the like, or, alternatively,
the currently serving ground network cell has no adjacent ground network cell, and the RRM measurement of the non-ground network cell is higher than a seventh threshold value, and the terminal is instructed to switch from the ground network cell to the non-ground network cell; or the like, or, alternatively,
and the moving speed of the terminal exceeds an eighth threshold value, and the terminal is instructed to be switched from the ground network cell to the non-ground network cell.
Specifically, when the user switches from the non-terrestrial network to the terrestrial network, the network makes a switching decision based on one of the following conditions, instructing the terminal to switch from the non-terrestrial network cell to the terrestrial network cell:
(1) the RRM measurement value of the non-terrestrial network cell is below a first threshold value and the RRM measurement value of the terrestrial network cell is above a second threshold value.
(2) The terminal is at the edge of the non-ground network cell and the non-ground network has no new aerospace device to provide the connection service for the user continuously, and the RRM measured value of the ground network cell is higher than a third threshold value.
(3) When the CQI of the ground network cell is better than the fourth threshold value, the terminal can provide a higher data transmission rate than the aerospace device of the non-ground network, so that the terminal can be instructed to switch from the current non-ground network cell to the ground network cell when the CQI of the ground network cell is better than the fourth threshold value.
(4) Other non-ground networks with other track heights exist on the working frequency band of the non-ground network cell to cover the non-ground network cell, and when the two non-ground networks interfere with each other in the same coverage area.
When the user is switched from the ground network to the non-ground network, the network makes a switching decision based on one of the following conditions, and instructs the terminal to switch from the ground network cell to the non-ground network cell:
(1) the RRM measurement value of the ground network cell is below a fifth threshold and the RRM measurement value of the non-ground network cell is above a sixth threshold.
(2) The currently serving ground network cell has no neighboring ground network cells and the RRM measurement of the non-ground network cell is above the seventh threshold.
(3) And the moving speed of the terminal exceeds an eighth threshold value, so that the switching of the ground network cell is frequent.
In the following, a satellite network is taken as an example for description, and in the implementation, the satellite network is taken as an example because the satellite network is a typical non-terrestrial network; however, other non-terrestrial networks are also applicable to the solution provided by the embodiment of the present invention, and the satellite network is only used for teaching the skilled person how to implement the present invention specifically, but is not meant to be used only for the satellite network, and the implementation process may be combined with practical needs to determine the corresponding implementation mode.
Example 1:
the determination of the RRM measurement threshold is illustrated in this example.
In the RRM measurement process of the terrestrial network cell and the satellite network cell, the switching threshold of the satellite network cell and the switching threshold of the terrestrial network cell should be different due to different frequency bands, antenna gains, bandwidths, and sensitivities.
In order to provide reliable communication service, the terrestrial network cell and the satellite network cell individually define different RRM measurement thresholds, including at least a target threshold and a leaving threshold of the satellite network cell and a target threshold and a leaving threshold of the terrestrial network cell. The target threshold means that the RRM measurement threshold of the cell needs to be greater than a specific value if the cell is handed over to, and the leaving threshold means that the RRM measurement value of the original cell needs to be lower than a certain threshold when the user wants to switch from the cell to a new cell. Setting two thresholds can alleviate ping-pong effect, and can avoid inaccuracy of instantaneous RRM measurement values in certain specific scenarios.
For example, in the process of switching from the satellite network cell to the ground network cell, when the RSRP measurement value of the satellite network cell is less than-90 dbm and the RSRP measurement value of the ground network cell is greater than-92 dbm, the satellite network cell needs to be considered to be switched to the ground network cell. Similarly, if during a handover from a terrestrial network cell to a satellite network cell, the RSRP value of the terrestrial network cell is less than-95 dbm, while the RSRP value of the satellite network cell is greater than-88 dbm, a handover from the terrestrial network cell to the satellite network cell may be considered.
Example 2:
the determination of cell coverage based on satellite ephemeris information is illustrated in this example.
In a satellite network, ephemeris information is very important, and the network or the terminal may determine whether there is a neighboring satellite network cell or not based on the ephemeris information and the topology of the satellite network cell to determine whether coverage is continuous or not.
Determination of the cell edge of the satellite network:
based on the ephemeris information, the network obtains the direction, angle, and position information of the satellite beam, thereby determining the range covered by the satellite beam.
Based on the position report of the terminal, the network determines whether the terminal is located at the boundary of the satellite network cell.
Satellite network cell service continuity determination:
based on the ephemeris information, the network determines the coverage of the satellite and the deployment of the satellite;
the network judges the ID of the satellite network cell currently served by the terminal based on the position information of the user, then judges whether the adjacent satellite network cell exists around the serving satellite network cell of the user according to the coverage information of the satellite, if not, the current satellite network cell is judged to be in a marginal cell, the service of the satellite is interrupted, otherwise, a candidate satellite network cell exists.
The handover decision based on ephemeris information and RRM measurement information may be as follows:
generally, a satellite network has two modes of global coverage and hotspot coverage, when a terminal is connected to the satellite network, if the satellite or the terminal moves to cause the terminal to move from the center of a satellite network cell to the edge of the satellite network cell, the network needs to judge whether other satellite cells continuously covered exist in the satellite network cell, if not, the network needs to inform the terminal to measure a ground network cell, and if the signal quality is higher than a certain threshold, the network informs the terminal to switch from the satellite network cell to the ground network cell; if continuous satellite network cells exist, the network further judges whether the terminal is continuously in the original cell or is in a ground network cell.
Similarly, when the terminal receives data in the cell of the ground network, if the terminal moves from the center of the cell to the edge of the cell, the network may configure RRM measurement information of the terminal, and if it is found that the signal quality of the satellite network is good, and the signal quality of the cell of the ground network is poor, or even there is no continuous coverage, the terminal needs to switch from the cell of the ground network to the cell of the satellite network, thereby ensuring the continuity of the service.
Fig. 3 is a schematic diagram of hybrid coverage of a satellite network cell and a ground network cell in embodiment 2, as shown in fig. 3, a terminal a is located at the center of the ground network cell, has good signal quality, and continues to operate in the ground network cell, a terminal B is located at the edge of the ground network cell, has poor signal quality, and has good signal quality in the satellite network cell, and the terminal B is to be switched from the ground network cell to the satellite network cell.
The handover decision based on ephemeris and orbit topology information of other non-terrestrial networks in the same frequency band as the non-terrestrial network may be as follows:
according to ITU (International telecommunications Union) regulations on air-to-medium frequencies and orbits, a non-geostationary-satellite orbit (NGSO) requires frequency avoidance for a geostationary-satellite orbit (GSO). Considering that GSO is in the equatorial plane, when an NGSO satellite operating in the same frequency band, such as a medium-low orbit, runs to the equatorial plane, in order to avoid interference to the GSO satellite signal, the NGSO signal is usually stopped to be transmitted (or referred to as satellite off). In order not to affect the communication of the terminal, the network needs to inform the terminal to switch from the satellite network cell to the terrestrial network cell, so as to ensure the continuity of the service.
Fig. 4 is a schematic diagram of avoiding Satellite signals in the same frequency band in embodiment 2, and as shown in fig. 4, the frequency band in which a GEO (Geostationary Earth Orbit Satellite) operates further includes MEO (Middle Earth Orbit Satellite) and LEO (Low Earth Orbit Satellite) systems, and the MEO and the LEO need to be closed when they run to the equator to avoid GEO Satellite signals in the same frequency band.
Example 3:
the application of the moving speed is illustrated in this example.
When the terminal is at different moving speeds, the terminal can choose to reside in a terrestrial network cell or a satellite network cell.
For example, before the aircraft takes off at an airport, because the speed of the aircraft is relatively low, even the aircraft stops on the ground, the aircraft can be connected to a ground network cell to receive the service of the ground network, if the aircraft takes off, because the speed of the aircraft is high, the connection to the ground network cell becomes improper, and the signal of a high-altitude ground base station cannot be covered, and the aircraft is switched from the ground network cell to a satellite network cell.
Similarly, when the speed is high, such as high-speed rail, unmanned plane, etc., it is a reasonable choice to switch from the ground network cell to the satellite network cell.
Example 4:
the service continuity determination of the terrestrial network cell is illustrated in this example.
For a ground cellular cell, a base station determines whether a continuous serving cell exists around a cell through inter-station information interaction or OAM (operation, Administration, and Maintenance) network management information.
Similarly, the continuity of the ground network cell can be judged based on the position information, the speed and the moving direction of the user, and if the user moves towards the edge of the cell and does not have an adjacent ground network cell in the direction, the network can judge that the user is about to move out of the coverage of the ground network cell based on the moving speed and the moving direction, so that the information collection and judgment are carried out on the switched non-ground network cell in advance, and the continuity of the service is ensured.
Based on the same inventive concept, embodiments of the present invention further provide a network side device, a terminal switching apparatus, and a computer readable storage medium, and because the principle of solving the problem of these devices is similar to the terminal switching method, the implementation of these devices may refer to the implementation of the method, and repeated details are not repeated.
When the technical scheme provided by the embodiment of the invention is implemented, the implementation can be carried out as follows.
Fig. 5 is a schematic structural diagram of a network-side device, as shown in the figure, the device includes:
the processor 500, which is used to read the program in the memory 520, executes the following processes:
acquiring communication parameters of a terminal;
according to the communication parameters and a preset switching strategy, instructing the terminal to switch from the current non-ground network cell to the ground network cell, or instructing the terminal to switch from the ground network cell to the non-ground network cell;
a transceiver 510 for receiving and transmitting data under the control of the processor 500.
In implementation, the preset handover policy includes one or a combination of the following policies:
the RRM measured value of the non-ground network cell is lower than a first threshold value, and the RRM measured value of the ground network cell is higher than a second threshold value, and the terminal is instructed to be switched to the ground network cell from the current non-ground network cell; or the like, or, alternatively,
the terminal continues to provide connection service for the user at the edge of the non-ground network cell and the non-ground network has no new aerospace device, and the RRM measured value of the ground network cell is higher than a third threshold value, and the terminal is instructed to be switched to the ground network cell from the current non-ground network cell; or the like, or, alternatively,
the CQI of the ground network cell is better than a fourth threshold value, and the terminal is instructed to be switched to the ground network cell from the current non-ground network cell; or the like, or, alternatively,
when the two non-ground networks interfere with each other in the same coverage area, the terminal is instructed to switch from the non-ground network cell to the ground network cell; or the like, or, alternatively,
the RRM measured value of the ground network cell is lower than a fifth threshold value, and the RRM measured value of the non-ground network cell is higher than a sixth threshold value, and the terminal is instructed to be switched from the ground network cell to the non-ground network cell; or, the currently serving ground network cell has no adjacent ground network cell, and the RRM measurement of the non-ground network cell is higher than the seventh threshold, instructing the terminal to switch from the ground network cell to the non-ground network cell; or the like, or, alternatively,
and the moving speed of the terminal exceeds an eighth threshold value, and the terminal is instructed to be switched from the ground network cell to the non-ground network cell.
In an implementation, the method further comprises the following steps:
and receiving the communication parameters reported by the terminal.
In an implementation, the communication parameters include one or a combination of the following parameters:
location information, velocity information, RRM measurement values of the serving cell, RRM measurement values of the target cell, CQI information of the serving cell, CQI information of the target cell.
Wherein in fig. 5, the bus architecture may include any number of interconnected buses and bridges, with one or more processors, represented by processor 500, and various circuits, represented by memory 520, being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 510 may be a number of elements including a transmitter and a receiver that provide a means for communicating with various other apparatus over a transmission medium. The processor 500 is responsible for managing the bus architecture and general processing, and the memory 520 may store data used by the processor 500 in performing operations.
The embodiment of the invention provides a terminal switching device, which comprises:
the acquisition module is used for acquiring communication parameters of the terminal;
and the indicating module is used for indicating the terminal to be switched from the current non-ground network cell to the ground network cell or indicating the terminal to be switched from the ground network cell to the non-ground network cell according to the communication parameters and a preset switching strategy.
The specific implementation may refer to implementation of a terminal switching method on the network side.
For convenience of description, each part of the above-described apparatus is separately described as being functionally divided into various modules or units. Of course, the functionality of the various modules or units may be implemented in the same one or more pieces of software or hardware in practicing the invention.
Fig. 6 is a schematic structural diagram of a terminal, and as shown in the figure, the terminal includes:
the processor 600, which is used to read the program in the memory 620, executes the following processes:
receiving a switching instruction of a network side;
switching from the current non-ground network cell to a ground network cell or switching from the ground network cell to the non-ground network cell according to the switching indication;
a transceiver 610 for receiving and transmitting data under the control of the processor 600.
In an implementation, the method further comprises the following steps:
and reporting the communication parameters to a network side.
In an implementation, the communication parameters include one or a combination of the following parameters:
location information, velocity information, RRM measurement value of serving cell, RRM measurement value of target cell, CQI information of serving cell, CQI information of target cell
Where in fig. 6, the bus architecture may include any number of interconnected buses and bridges, with various circuits being linked together, particularly one or more processors represented by processor 600 and memory represented by memory 620. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 610 may be a number of elements including a transmitter and a receiver that provide a means for communicating with various other apparatus over a transmission medium. For different user devices, the user interface 630 may also be an interface capable of interfacing with a desired device externally, including but not limited to a keypad, display, speaker, microphone, joystick, etc.
The processor 600 is responsible for managing the bus architecture and general processing, and the memory 620 may store data used by the processor 600 in performing operations.
The embodiment of the invention provides a terminal switching device, which comprises:
a receiving module, configured to receive a handover indication of a network side;
and the switching module is used for switching from the current non-ground network cell to the ground network cell or switching from the ground network cell to the non-ground network cell according to the switching indication.
The specific implementation may refer to the implementation of the terminal switching method at the terminal side.
For convenience of description, each part of the above-described apparatus is separately described as being functionally divided into various modules or units. Of course, the functionality of the various modules or units may be implemented in the same one or more pieces of software or hardware in practicing the invention.
The embodiment of the invention provides a computer readable storage medium, which stores a computer program for executing the terminal switching method.
The specific implementation may refer to implementation of a terminal switching method on a network side and/or a terminal side.
In summary, the present invention provides a scheme for switching a terminal between a ground network and a non-ground network, and specifically provides:
when the terminal user is switched from the non-terrestrial network to the terrestrial network, the network makes a switching decision based on one of the following conditions, instructing the terminal to switch from the non-terrestrial network cell to the terrestrial network cell:
the RRM measurement values (RSRP, RSRQ) of the non-terrestrial network cells are lower than a preset first threshold value and the RRM measurement values of the terrestrial network cells are higher than a preset second threshold value.
The terminal is located at the edge of the non-terrestrial network cell and no adjacent non-terrestrial network cell continues to provide communication service for the terminal, and the RRM measurement of the terrestrial network cell is higher than the preset third threshold.
The CQI of the terrestrial network cell is better than the fourth threshold.
Other non-ground networks with other track heights exist on the working frequency band of the non-ground network cell to cover the non-ground network cell, and when the two non-ground networks interfere with each other in the same coverage area.
When the terminal user is switched from the ground network to the non-ground network, the network makes a switching decision based on one of the following conditions, and instructs the terminal to switch from the ground network cell to the non-ground network cell:
the RRM measurement value of the ground network cell is lower than a preset fifth threshold, and the RRM measurement value of the non-ground network cell is higher than a preset sixth threshold.
The currently serving ground network cell has no adjacent ground network cell, and the RRM measurement of the non-ground network cell is higher than a preset seventh threshold.
The moving speed of the terminal exceeds an eighth threshold value.
By adopting the scheme, the terminal can be flexibly switched between the ground network and the non-ground network, so that the terminal can select a proper network to communicate according to different conditions and scenes, and the user experience is improved.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention 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, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. 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 present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims (17)

1. A terminal switching method is characterized by comprising the following steps:
a network side acquires communication parameters of a terminal;
and the network side instructs the terminal to switch from the current non-ground network cell to the ground network cell or instructs the terminal to switch from the ground network cell to the non-ground network cell according to the communication parameters and a preset switching strategy.
2. The method of claim 1, wherein the preset handover policy comprises one or a combination of the following policies:
the method comprises the steps that a Radio Resource Management (RRM) measured value of a non-ground network cell is lower than a first threshold value, and an RRM measured value of a ground network cell is higher than a second threshold value, and a terminal is instructed to be switched to the ground network cell from the current non-ground network cell; or the like, or, alternatively,
the terminal continues to provide connection service for the user at the edge of the non-ground network cell and the non-ground network has no new aerospace device, and the RRM measured value of the ground network cell is higher than a third threshold value, and the terminal is instructed to be switched to the ground network cell from the current non-ground network cell; or the like, or, alternatively,
the CQI is better than the fourth threshold value, and the terminal is instructed to switch from the current non-ground network cell to the ground network cell; or the like, or, alternatively,
when the two non-ground networks interfere with each other in the same coverage area, the terminal is instructed to switch from the non-ground network cell to the ground network cell; or the like, or, alternatively,
the RRM measured value of the ground network cell is lower than a fifth threshold value, and the RRM measured value of the non-ground network cell is higher than a sixth threshold value, and the terminal is instructed to be switched from the ground network cell to the non-ground network cell; or the like, or, alternatively,
the currently serving ground network cell has no adjacent ground network cell, and the RRM measurement of the non-ground network cell is higher than a seventh threshold value, and the terminal is instructed to switch from the ground network cell to the non-ground network cell; or the like, or, alternatively,
and the moving speed of the terminal exceeds an eighth threshold value, and the terminal is instructed to be switched from the ground network cell to the non-ground network cell.
3. The method of claim 1, further comprising:
and receiving the communication parameters reported by the terminal.
4. The method of claim 1 or 3, wherein the communication parameters comprise one or a combination of the following parameters:
location information, velocity information, RRM measurement values of the serving cell, RRM measurement values of the target cell, CQI information of the serving cell, CQI information of the target cell.
5. A terminal switching method is characterized by comprising the following steps:
the terminal receives a switching instruction of a network side;
and the terminal switches from the current non-ground network cell to the ground network cell or switches from the ground network cell to the non-ground network cell according to the switching indication.
6. The method of claim 5, further comprising:
and the terminal reports the communication parameters to the network side.
7. The method of claim 5 or 6, wherein the communication parameters comprise one or a combination of the following parameters:
location information, velocity information, RRM measurement values of the serving cell, RRM measurement values of the target cell, CQI information of the serving cell, CQI information of the target cell.
8. A network-side device, comprising:
a processor for reading the program in the memory, performing the following processes:
acquiring communication parameters of a terminal;
according to the communication parameters and a preset switching strategy, instructing the terminal to switch from the current non-ground network cell to the ground network cell, or instructing the terminal to switch from the ground network cell to the non-ground network cell;
a transceiver for receiving and transmitting data under the control of the processor.
9. The apparatus of claim 8, wherein the preset handover policy comprises one or a combination of the following policies:
the RRM measured value of the non-ground network cell is lower than a first threshold value, and the RRM measured value of the ground network cell is higher than a second threshold value, and the terminal is instructed to be switched to the ground network cell from the current non-ground network cell; or the like, or, alternatively,
the terminal continues to provide connection service for the user at the edge of the non-ground network cell and the non-ground network has no new aerospace device, and the RRM measured value of the ground network cell is higher than a third threshold value, and the terminal is instructed to be switched to the ground network cell from the current non-ground network cell; or the like, or, alternatively,
the CQI of the ground network cell is better than a fourth threshold value, and the terminal is instructed to be switched to the ground network cell from the current non-ground network cell; or the like, or, alternatively,
when the two non-ground networks interfere with each other in the same coverage area, the terminal is instructed to switch from the non-ground network cell to the ground network cell; or the like, or, alternatively,
the RRM measured value of the ground network cell is lower than a fifth threshold value, and the RRM measured value of the non-ground network cell is higher than a sixth threshold value, and the terminal is instructed to be switched from the ground network cell to the non-ground network cell; or the like, or, alternatively,
the currently serving ground network cell has no adjacent ground network cell, and the RRM measurement of the non-ground network cell is higher than a seventh threshold value, and the terminal is instructed to switch from the ground network cell to the non-ground network cell; or the like, or, alternatively,
and the moving speed of the terminal exceeds an eighth threshold value, and the terminal is instructed to be switched from the ground network cell to the non-ground network cell.
10. The apparatus of claim 8, further comprising:
and receiving the communication parameters reported by the terminal.
11. The apparatus of claim 8 or 10, wherein the communication parameters comprise one or a combination of the following parameters:
location information, velocity information, RRM measurement values of the serving cell, RRM measurement values of the target cell, CQI information of the serving cell, CQI information of the target cell.
12. A terminal, comprising:
a processor for reading the program in the memory, performing the following processes:
receiving a switching instruction of a network side;
switching from the current non-ground network cell to a ground network cell or switching from the ground network cell to the non-ground network cell according to the switching indication;
a transceiver for receiving and transmitting data under the control of the processor.
13. The terminal of claim 12, further comprising:
and reporting the communication parameters to a network side.
14. The terminal according to claim 12 or 13, wherein the communication parameters comprise one or a combination of the following parameters:
location information, velocity information, RRM measurement values of the serving cell, RRM measurement values of the target cell, CQI information of the serving cell, CQI information of the target cell.
15. A terminal switching apparatus, comprising:
the acquisition module is used for acquiring communication parameters of the terminal;
and the indicating module is used for indicating the terminal to be switched from the current non-ground network cell to the ground network cell or indicating the terminal to be switched from the ground network cell to the non-ground network cell according to the communication parameters and a preset switching strategy.
16. A terminal switching apparatus, comprising:
a receiving module, configured to receive a handover indication of a network side;
and the switching module is used for switching from the current non-ground network cell to the ground network cell or switching from the ground network cell to the non-ground network cell according to the switching indication.
17. A computer-readable storage medium, characterized in that the computer-readable storage medium stores a computer program for executing the method of any one of claims 1 to 7.
CN202010573068.4A 2020-06-22 2020-06-22 Terminal switching method, equipment and medium Pending CN113905420A (en)

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