CN113972944A - Method and device for indicating satellite system configuration information - Google Patents
Method and device for indicating satellite system configuration information Download PDFInfo
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Abstract
The application provides a method and equipment for indicating satellite system configuration information. Applied to a network device, the method comprises the following steps: and sending a downlink indication message, wherein the downlink indication message carries satellite system configuration information, and the satellite system configuration information comprises at least one of satellite orbit height, satellite type, satellite inclination angle information, beam direction information, beam width information, beam coverage size, clock offset rate and clock correction coefficient, so that the satellite system information configuration is realized in the satellite system.
Description
Technical Field
The present application relates to the field of wireless communications technologies, and in particular, to a method and an apparatus for indicating satellite system configuration information.
Background
In the satellite communication system, the configuration information of the satellite system is greatly different from the configuration information of the terrestrial mobile communication system, especially for the low-earth orbit satellite moving at high speed. Because the satellite system has various configurations of different orbits, different beams and different processing modes, how to configure system information in the satellite system is a problem to be solved at present in order to support operations of quick access, network selection, mobility management and the like of a terminal.
Disclosure of Invention
The embodiment of the application provides indication and equipment of satellite system configuration information, which are used for realizing satellite system information configuration in a satellite system.
In a first aspect, an embodiment of the present application provides a method for indicating satellite system configuration information, which is applied to a network device, and includes:
and sending downlink indication information, wherein the downlink indication information carries satellite system configuration information, and the satellite system configuration information comprises at least one of satellite orbit height, satellite type, satellite inclination angle information, beam direction information, beam width information, beam coverage size, clock offset rate and clock correction coefficient.
In some embodiments of the present application, the downlink indication message includes at least one of a Master Information Block (MIB), a System Information Block (SIB), Radio Resource Control (RRC) signaling, medium access control element (MAC CE) signaling, and signaling information of a downlink control channel (PDCCH).
In some embodiments of the present application, sending the downlink indication message includes:
and when the terminal exits from the RRC connection state, sending downlink indication information, wherein the downlink indication information carries the current satellite system configuration information.
In the embodiment of the present application, the method further includes:
receiving indication information sent by a terminal, wherein the indication information is used for indicating the satellite system configuration information requested to be acquired by the terminal;
sending a downlink indication message, comprising:
and sending downlink indication information according to the indication information, wherein the downlink indication information carries the satellite system configuration information requested to be acquired by the terminal.
In some embodiments of the present application, the indication information is carried in signaling information of an uplink control channel (PUCCH), MAC CE signaling, or RRC signaling.
In some embodiments of the present application, sending the downlink indication message according to the indication information includes:
and sending a downlink indication message to the terminal according to the indication information, wherein the downlink indication message is carried in signaling information of the PDCCH, Downlink Control Information (DCI), MAC CE signaling or RRC signaling.
In some embodiments of the present application, sending a downlink indication message to a terminal according to the indication information includes:
and when the terminal exits from the RRC connection state, downlink indication information is sent to the terminal according to the indication information, and the downlink indication information carries the current satellite system configuration information.
In some embodiments of the present application, the satellite system configuration information requested to be obtained includes at least one of:
satellite orbit height, satellite type, satellite inclination angle information, satellite ephemeris information, satellite almanac information, satellite orbit information valid time, beam direction information, beam width information, beam use frequency, beam coverage size, satellite load type, feeder link transmission distance, feeder link direction information, timing reference point, clock offset rate, clock correction coefficient.
In a second aspect, an embodiment of the present application provides a method for indicating satellite system configuration information, including:
receiving downlink indication information sent by the network equipment, wherein the downlink indication information carries satellite system configuration information, and the satellite system configuration information comprises at least one of satellite orbit height, satellite type, satellite inclination angle information, beam direction information, beam width information, beam coverage size, clock offset rate and clock correction coefficient.
In some embodiments of the present application, the downlink indication message includes at least one of signaling information of MIB, SIB, RRC signaling, MAC CE signaling, PDCCH.
In some embodiments of the present application, receiving a downlink indication message sent by a network device includes:
and when the RRC connection state is exited, receiving a downlink indication message sent by the network equipment, wherein the downlink indication message carries the current satellite system configuration information.
Some embodiments of the present application further comprise:
sending indication information to the network equipment, wherein the indication information is used for indicating the satellite system configuration information which is requested to be acquired by the terminal;
receiving a downlink indication message sent by a network device, including:
and receiving a downlink indication message sent by the network equipment according to the indication information, wherein the downlink indication message carries the satellite system configuration information requested to be acquired by the terminal.
In some embodiments of the present application, the indication information is carried in signaling information of a PUCCH, MAC CE signaling, or RRC signaling.
In some embodiments of the present application, receiving a downlink indication message sent by a network device according to indication information includes:
and receiving a downlink indication message sent by the network equipment according to the indication information, wherein the downlink indication message is carried in the signaling information, the DCI, the MAC CE signaling or the RRC signaling of the PDCCH.
In some embodiments of the present application, receiving a downlink indication message sent by a network device according to indication information includes:
and when the RRC connection state exits, receiving a downlink indication message sent by the network equipment according to the indication information, wherein the downlink indication message carries the current satellite system configuration information.
In some embodiments of the present application, the satellite system configuration information requested to be obtained includes at least one of:
satellite orbit height, satellite type, satellite inclination angle information, satellite ephemeris information, satellite almanac information, satellite orbit information valid time, beam direction information, beam width information, beam use frequency, beam coverage size, satellite load type, feeder link transmission distance, feeder link direction information, timing reference point, clock offset rate, clock correction coefficient.
Some embodiments of the present application further comprise:
determining network parameters of the satellite according to the satellite system configuration information, and performing at least one of the following operations:
determining whether to randomly access a corresponding satellite cell based on the satellite orbit altitude or the satellite type in the satellite system configuration information;
determining the position information of the satellite based on ephemeris information of the satellite or almanac information of the satellite in the satellite system configuration information, wherein the position information is used for Doppler compensation, timing compensation or cell switching;
determining a coverage area of the satellite beam on the ground based on inclination angle information of the satellite or direction information, beam width information and beam coverage size of the beam in the satellite system configuration information;
determining Doppler compensation information based on the direction information of the beam;
determining timing compensation information or Doppler compensation information based on satellite load types, transmission distances of feeder links or direction information of the feeder links in the satellite system configuration information;
timing compensation information or clock adjustment information is determined based on a timing reference point, a clock offset rate, or a clock correction coefficient in the satellite system configuration information.
In a third aspect, an embodiment of the present application provides a network device, including:
the transmitting module is used for transmitting downlink indication information, the downlink indication information carries satellite system configuration information, and the satellite system configuration information comprises at least one of satellite orbit height, satellite type, satellite inclination angle information, beam direction information, beam width information, beam coverage size, clock offset rate and clock correction coefficient.
In a fourth aspect, an embodiment of the present application provides a terminal, including:
the receiving module is used for receiving downlink indication information sent by the network device, wherein the downlink indication information carries satellite system configuration information, and the satellite system configuration information comprises at least one of satellite orbit height, satellite type, satellite inclination angle information, beam direction information, beam width information, beam coverage size, clock offset rate and clock correction coefficient.
In a fifth aspect, an embodiment of the present application provides a network device, including a processor, a memory, and a transceiver;
the transceiver receives and transmits data under the control of the processor;
a memory storing computer instructions;
a processor for reading computer instructions to perform a method as in any one of the first aspect.
In a sixth aspect, an embodiment of the present application provides a terminal, including a processor, a memory, and a transceiver;
the transceiver receives and transmits data under the control of the processor;
a memory storing computer instructions;
a processor for reading computer instructions to perform a method as in any one of the second aspects.
In a seventh aspect, an embodiment of the present application provides a computer-readable storage medium, where computer-executable instructions are stored, and the computer-executable instructions are used to cause a computer to execute the method according to any one of the first aspect.
In an eighth aspect, embodiments of the present application provide a computer-readable storage medium storing computer-executable instructions for causing a computer to perform the method according to any one of the second aspect.
In the above embodiment of the present application, the network device sends the downlink indication message, where the downlink indication message carries satellite system configuration information, and the satellite system configuration information includes at least one of a satellite orbit height, a satellite type, satellite tilt angle information, beam direction information, beam width information, beam coverage size, clock offset rate, and clock correction coefficient, so as to implement satellite system information configuration in the satellite system.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments of the present application will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 schematically illustrates an application scenario provided by an embodiment of the present application;
fig. 2 is a flowchart illustrating an indication method of satellite system configuration information provided by an embodiment of the present application;
fig. 3 is a flowchart illustrating a method for indicating satellite system configuration information based on terminal requirements according to an embodiment of the present application;
fig. 4 is a functional block diagram illustrating a network device according to an embodiment of the present application;
fig. 5 is a functional block diagram illustrating a terminal according to an embodiment of the present disclosure;
fig. 6 is a diagram illustrating a hardware structure of a network device according to an embodiment of the present application;
fig. 7 is a diagram illustrating a hardware structure of a terminal according to an embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application clearer, the present application will be described in further detail with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all embodiments. 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 "first", "second" are used only for distinguishing between descriptions and are not to be construed as implying or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the features, and in the description of embodiments of the application, "at least one" means one or more unless stated otherwise.
Some terms in the embodiments of the present application are explained below to facilitate understanding by those skilled in the art.
(1) In the embodiments of the present application, the terms "network" and "system" are often used interchangeably, but those skilled in the art can understand the meaning.
(2) In the embodiments of the present application, the term "plurality" means two or more, and other terms are similar thereto.
(3) "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship.
(4) The network device is a device for providing a wireless communication function for the terminal, and includes but is not limited to: a gbb in 5G, a Radio Network Controller (RNC), a Node B (NB), a Base Station Controller (BSC), a Base Transceiver Station (BTS), a home base station (e.g., home evolved node B or home node B, HNB), a BaseBand Unit (BBU), a transmission point (TRP), a Transmission Point (TP), a mobile switching center (msc), and the like. The base station in the present application may also be a device that provides a terminal with a wireless communication function in other communication systems that may appear in the future.
(5) A terminal is a device that can provide voice and/or data connectivity to a user. For example, the terminal device includes a handheld device, an in-vehicle device, and the like having a wireless connection function. Currently, the terminal device may be: a mobile phone (mobile phone), a tablet computer, a notebook computer, a palm top computer, a Mobile Internet Device (MID), a wearable device, a Virtual Reality (VR) device, an Augmented Reality (AR) device, a wireless terminal in industrial control (industrial control), a wireless terminal in self-driving (self-driving), a wireless terminal in smart grid (smart grid), a wireless terminal in transportation safety (transportation safety), a wireless terminal in smart city (smart city), or a wireless terminal in smart home (smart home), etc.
In a ground mobile communication system, a message to be broadcast by a network device mainly comprises frequency point information, cell wireless parameter configuration information, neighbor cell measurement and access control information, and the like, and a terminal needs to acquire the information to complete cell access when accessing a network, and can adapt to operations such as switching, paging and the like in a communication process to maintain high-quality communication service transmission.
In a satellite communication system, the satellite system comprises 3 modes of high orbit, medium orbit and low orbit, the transmission capability based on the satellite is divided into an on-satellite processing mode and a transparent forwarding mode, and the satellite system comprises various configuration elements such as frequency points, bandwidth and wave beams, so that the operation of the satellite communication system is relatively complex. The satellite communication system broadcasts information such as ephemeris, beams, frequency points and the like to the terminal, so that the terminal determines the orbital position of the satellite. The conventional satellite communication system generally only supports fixed single-point access communication, does not consider some functions of mobile communication, such as technical requirements of handover, interference avoidance, paging, network selection and the like, and does not consider time-Frequency synchronization requirements brought by fast movement of a low-orbit satellite, particularly multi-user synchronization requirements in an Orthogonal Frequency Division Multiplexing (OFDM) system, so that the satellite communication system cannot stably operate. On the basis of the terrestrial mobile communication system, the satellite communication system needs more information indication.
In the embodiment of the application, the satellite system configuration information is sent through the broadcast message, wherein the satellite system configuration information comprises at least one of satellite operation orbit information, beam configuration information, satellite load information, satellite timing and clock information, and more information indications are provided for satellite communication, so that the satellite system information configuration is realized in the satellite system, and the stability of the satellite communication system is further improved.
Fig. 1 schematically illustrates a satellite communication system provided in an embodiment of the present application. As shown, the satellite communication system is generally composed of a satellite 100, a ground station 200, and terminals (300a to 300 c).
The satellite 100 functions as a relay station in the air, that is, amplifies the electromagnetic wave transmitted from the ground station 200 and returns the amplified electromagnetic wave to another ground station.
The ground station 200 is an interface between the satellite system and the ground public network, and the ground terminals (300a to 300c) can access the satellite system through the ground station 200 to form a link. Ground station 200 may be a base station, a transmission point, a mobile switching center, or like network device.
The terminals (300 a-300 c) are various user terminals, such as a notebook computer 300a, a tablet computer 300b, and a mobile phone 300 c.
Fig. 2 is a flowchart illustrating a method for indicating satellite system configuration information according to an embodiment of the present application, based on the satellite communication system shown in fig. 1. As shown in the figure, the process mainly includes the following steps:
s201: the network equipment sends downlink indication information, the downlink indication information carries satellite system configuration information, and the satellite system configuration information comprises at least one of satellite orbit height, satellite type, satellite inclination angle information, beam direction information, beam width information, beam coverage size, clock offset rate and clock correction coefficient.
In some embodiments, the satellite system configuration information further comprises: at least one of ephemeris information of the satellite, almanac information of the satellite, valid time of satellite orbit information, beam use frequency, satellite load type, transmission distance of the feeder link, feeder link direction information, timing reference point.
Table 1 exemplarily shows parameter meanings and application methods of the satellite system configuration information provided in the embodiment of the present application.
TABLE 1 parameter meanings and application methods for satellite system configuration information
Wherein LEO is an english abbreviation of a Low Earth Orbit satellite (Low Earth Orbit), MEO is an english abbreviation of a Medium Earth Orbit satellite (Medium Earth Orbit), and GEO is an english abbreviation of The Geostationary Orbit satellite (The Geostationary Orbit).
As can be seen from table 1, the number of parameters of the satellite system configuration information is large, and a large number of bits need to be occupied, and the information type and the load of the satellite system configuration information can be notified by using the downlink indication message.
In an embodiment of the present application, the downlink indication message includes a Master Information Block (MIB) and a System Information Block (SIB), where a bit quantity of Information carried by the MIB is limited, and can be used to carry a satellite ID and a satellite orbit type in satellite System configuration Information, a bit quantity occupied by other Information is large and may exceed a maximum capacity supported by a Physical Broadcast Channel (PBCH), and the SIB can be used to carry at least one of a satellite orbit height, a satellite type, satellite tilt angle Information, beam direction Information, beam width Information, a beam coverage size, a clock offset rate, and a clock correction coefficient.
In some embodiments, a fixed periodicity may be employed for the transmission of the MIB, such as once every 20 milliseconds (ms). The transmission of the SIB may be periodic or aperiodic. Because the quantity of the satellite system configuration information is large, when the SIB is sent according to the configured period, the periods configured by the SIB carrying different satellite system configuration information are different, thereby reducing the resource overhead.
For example, when carrying satellite orbit information, the transmission period of the SIB may be 10 minutes (min), when carrying beam configuration information, the transmission period of the SIB may be 1min, when carrying satellite load information, the transmission period of the SIB may be 500ms, and when carrying satellite timing and clock information, the transmission period of the SIB may be 200 ms.
In some embodiments, the Downlink indication message further includes at least one of Radio Resource Control (RRC) signaling, Media Access Control Element (MAC CE) signaling, and signaling information of a Downlink Control Channel (PDCCH).
S202: and the terminal receives the downlink indication message carrying the satellite system configuration information to acquire the satellite system configuration information.
The terminal can perform cell access, cell switching, interference avoidance and the like according to the acquired satellite system configuration information. In some embodiments of the present application, after receiving the satellite system configuration information sent by the network device, the terminal determines a network parameter of the satellite according to the satellite system configuration information, and performs at least one of the following operations:
determining whether to randomly access a corresponding satellite cell based on the satellite orbit altitude or the satellite type;
determining a coverage area of a satellite beam on the ground based on inclination angle information of the satellite or direction information and beam width information of the beam;
determining Doppler compensation information based on the direction information of the beam;
timing compensation information or clock adjustment information is determined based on the clock offset rate or the clock correction coefficient.
In the embodiment of the application, when the load of the satellite system configuration information is large, the network device loads the satellite system configuration information in the data packet and sends the satellite system configuration information to the terminal. The network device can perform information indication on the satellite system configuration information in the data packet through the application program APP.
In the embodiments of the present application, the network device sends a broadcast message carrying satellite system configuration information, where the satellite system configuration information includes at least one of a satellite orbit height, a satellite type, satellite tilt angle information, beam direction information, beam width information, beam coverage size, clock offset rate, and clock correction coefficient, and provides more information indications for satellite communication, so as to implement satellite system information configuration in a satellite system.
In some embodiments of the present application, when configuration information of a satellite system changes, a network device updates the configuration information of the satellite system and sends a downlink indication message carrying the updated configuration information of the satellite system. And the terminal performs cell access, cell switching, interference avoidance, RRM measurement and the like according to the updated satellite system configuration information. Wherein, the situation that the configuration information of the satellite system changes comprises at least one of the following conditions:
the method comprises the following steps that a current satellite or an adjacent satellite collides with a GEO satellite at the equator position, the interference to the GEO satellite needs to be avoided, and the pitch angles of the satellite and a wave beam are adjusted;
the current satellite or the adjacent satellite adjusts the transmission bandwidth of the satellite system in order to avoid the interference with other satellites;
when the current satellite or the adjacent satellite runs to a high latitude area, the satellite is to be closed;
when the validity period of the ephemeris information of the current serving satellite or the adjacent satellite expires, the terminal needs to be informed of the new ephemeris information.
In some embodiments of the present application, the terminal may perform satellite search based on ephemeris information stored in advance or when connection is last interrupted, adjust a beam transmit-receive angle to receive at least one of a satellite ID and a satellite orbit type carried by the MIB and a satellite orbit height carried by the SIB, a satellite type, tilt angle information of the satellite, direction information of a beam, beam width information, a beam coverage size, a clock offset rate, and a clock correction coefficient, adjust a timing parameter and a doppler reception correction parameter according to the MIB and the SIB, and configure a cell access parameter to access to a corresponding cell.
In the cell Access process, a terminal sends a Physical Random Access Channel (PRACH) signal for acquiring satellite timing information and uplink Doppler compensation information to network equipment, the network equipment receives the PRACH signal and then responds, sends a Physical Access Channel (PRACH) response message and indication information to the terminal, and the terminal sends an RRC connection request message in the PRACH Channel according to the indication information to establish RRC connection with the network equipment.
In the RRC connection stage, the network equipment sends an RRC reconfiguration signaling to the terminal, and the RRC reconfiguration signaling carries more accurate satellite system configuration information, so that the terminal can track signals and operation tracks of satellites in real time, accurately judge the satellite coverage position and keep time-frequency synchronization with the network equipment.
In some embodiments of the present application, when a terminal initially accesses a cell, satellite system configuration information is received in order to quickly acquire a satellite signal and access into a network. The ephemeris information of the satellite is generally valid for a period of time, and the accuracy gradually decreases with time. In order to enable the terminal to obtain sufficiently accurate satellite system configuration information such as ephemeris information, almanac information, beam direction information and the like when the terminal is in a sleep state or is powered off, when the terminal exits an RRC connected state, the network device sends a downlink indication message to the terminal, where the downlink indication message carries current satellite system configuration information, so that the terminal stores the latest satellite system configuration information. The latest satellite system configuration information (such as ephemeris information of the satellite) can prolong the time of two accesses, so that the terminal becomes more efficient and accurate when accessing the cell again.
In some embodiments of the present application, after the terminal accesses the cell, the terminal needs to maintain continuous time-frequency synchronization with the network, and can switch a new satellite beam and a new satellite when the satellite moves, however, the terminal does not receive the downlink indication message in real time, or the accuracy of the satellite system configuration information carried by the downlink indication message cannot meet the terminal requirement, and the terminal has different accuracy requirements on the satellite system configuration information at different stages. The terminal needs to request the network device to indicate one or more pieces of satellite system configuration information, which is used for Radio Resource Management (RRM) measurement, switching, data reception and other operation behaviors of the satellite system, and the satellite system configuration information includes satellite operation orbit information, beam direction information, and satellite working mode information.
For example, during the RRM measurement of the neighboring cell, the terminal needs the beam width and the frequency band range of the neighboring cell so as to detect the SSB signal or other reference signals, and for the terminal of the local cell, the reference timing information of the local cell is needed so as to maintain the beam synchronization with the local cell in real time; for another example, when the terminal is handed over in a cell, the beam coverage of the cell needs to be determined, and satellite beam width information, satellite inclination information, and the like need to be obtained. For different operational behaviors, the terminal needs different satellite system configuration information.
Fig. 3 is a flowchart illustrating a method for indicating satellite system configuration information based on terminal requirements according to an embodiment of the present application. As shown in the figure, the process mainly includes the following steps:
s301: and the terminal sends indication information, wherein the indication information is used for indicating the satellite system configuration information which is requested to be acquired by the terminal.
In this step, the satellite system configuration information requested to be obtained by the terminal includes at least one of a satellite orbit height, a satellite type, satellite tilt angle information, satellite ephemeris information, satellite almanac information, effective time of satellite orbit information, beam direction information, beam width information, beam use frequency, beam coverage size, satellite load type, transmission distance of a feeder link, feeder link direction information, a timing reference point, a clock offset rate, and a clock correction coefficient.
In some embodiments, the indication information is carried in signaling information of PUCCH, MAC CE signaling, or RRC signaling.
S302: and the network equipment receives the indication information sent by the terminal.
S303: and the network equipment sends downlink indication information to the terminal according to the indication information, wherein the downlink indication information carries the satellite system configuration information which is requested to be acquired by the terminal.
In this step, the network device updates the inclination angle information, the beam use frequency, the satellite timing information, and the like of the satellite according to the indication information of the signaling information carried on the PUCCH, and transmits the signaling information of the PDCCH carrying the downlink indication message to the terminal, where the downlink indication message carries the latest satellite system configuration information that the terminal requests to acquire, or the network device updates at least one of the satellite operation orbit information, the direction information of the beam, the satellite load information, the timing reference point, the clock offset rate, and the clock correction coefficient according to the indication information carried on the RRC signaling, and transmits the RRC signaling carrying the downlink indication message to the terminal, where the downlink indication message carries the latest satellite system configuration information that the terminal requests to acquire.
In some embodiments, the downlink indication message may also be carried in dynamic signaling (such as DCI or MAC CE signaling).
The terminal can perform cell access, cell switching, interference avoidance and the like according to the satellite system configuration information acquired by the request. In some embodiments of the present application, after receiving the satellite system configuration information requested to be obtained, the terminal determines a network parameter of the satellite according to the satellite system configuration information requested to be obtained, and performs at least one of the following operations:
determining whether to randomly access a corresponding satellite cell based on the satellite orbit altitude or the satellite type in the satellite system configuration information;
determining the position information of the satellite based on ephemeris information of the satellite or almanac information of the satellite in the satellite system configuration information, wherein the position information is used for Doppler compensation, timing compensation or cell switching;
determining a coverage area of the satellite wave beam on the ground based on inclination angle information of the satellite, direction information of the wave beam, wave beam width information and wave beam coverage size in the satellite system configuration information;
determining Doppler compensation information based on the direction information of the beam;
determining timing compensation information or Doppler compensation information based on the satellite load type, the transmission distance of a feed link and the direction information of the feed link in the satellite system configuration information;
and determining timing compensation information or clock adjustment information based on a timing reference point, a clock offset rate and a clock correction coefficient in the satellite system configuration information.
In some embodiments, the accuracy may gradually decrease over time due to the period of validity of ephemeris information for the satellite. In order to enable the terminal to obtain sufficiently accurate satellite system configuration information such as ephemeris information, almanac information, beam direction information and the like when the terminal is in a dormant state or is turned off, when the terminal exits an RRC connected state, the network device sends a downlink indication message to the terminal according to the indication information, wherein the downlink indication message is carried in signaling information of a PDCCH, DCI, MAC CE signaling or RRC signaling, and the downlink indication message carries current satellite system configuration information, so that the terminal stores the latest satellite system configuration information. The latest satellite system configuration information (such as ephemeris information of the satellite) can prolong the time of two accesses, so that the terminal becomes more efficient and accurate when accessing the cell again.
In the embodiments of the present application, the terminal sends the indication information through the signaling information of the PUCCH, the MAC CE, or the RRC signaling, where the indication information is used to indicate the satellite system configuration information that the terminal requests to acquire, and the network device sends the satellite system configuration information that the terminal requests to acquire according to the indication information, so that resource overhead is saved.
Based on the same technical concept, embodiments of the present application provide a network device, which can implement the functions in the above embodiments.
Referring to fig. 4, the network device includes: the sending module 401 is configured to send a downlink indication message, where the downlink indication message carries satellite system configuration information, and the satellite system configuration information includes at least one of a satellite orbit height, a satellite type, satellite tilt angle information, beam direction information, beam width information, beam coverage size, clock offset rate, and clock correction coefficient.
In an embodiment of the present application, the downlink indication message includes at least one of signaling information of MIB, SIB, RRC signaling, MAC CE signaling, and PDCCH.
In an embodiment of the present application, the sending module 401 is configured to send a downlink indication message when the terminal exits from the RRC connected state, where the downlink indication message carries current satellite system configuration information.
In an embodiment of the present application, the network device includes: a receiving module 402, configured to receive indication information sent by a terminal, where the indication information is used to indicate satellite system configuration information requested to be obtained by the terminal;
a sending module 401, configured to send a downlink indication message according to the indication information, where the downlink indication message carries satellite system configuration information requested to be obtained by the terminal.
In the embodiment of the present application, the indication information is carried in signaling information of a PUCCH, MAC CE signaling, or RRC signaling.
In an embodiment of the present application, the sending module 401 is configured to: and sending a downlink indication message to the terminal according to the indication information, wherein the downlink indication message is carried in the signaling information of the PDCCH, the downlink control information DCI, the MAC CE signaling or the RRC signaling.
In an embodiment of the present application, the sending module 401 is configured to: and when the terminal exits from the RRC connection state, sending downlink indication information to the terminal according to the indication information, wherein the downlink indication information carries the current satellite system configuration information.
In an embodiment of the present application, the satellite system configuration information requested to be obtained includes at least one of:
satellite orbit height, satellite type, satellite inclination angle information, satellite ephemeris information, satellite almanac information, satellite orbit information valid time, beam direction information, beam width information, beam use frequency, beam coverage size, satellite load type, feeder link transmission distance, feeder link direction information, timing reference point, clock offset rate, clock correction coefficient.
It should be noted that, the network device provided in the embodiment of the present invention can implement all the method steps implemented by the method embodiment and achieve the same technical effect, and detailed descriptions of the same parts and beneficial effects as those of the method embodiment in this embodiment are not repeated herein.
Based on the same technical concept, the embodiment of the present application provides a terminal, which can implement the functions in the above embodiments.
Referring to fig. 5, the terminal includes: the receiving module 501 is configured to receive a downlink indication message sent by a network device, where the downlink indication message carries satellite system configuration information, and the satellite system configuration information includes at least one of a satellite orbit height, a satellite type, satellite tilt angle information, beam direction information, beam width information, beam coverage size, clock offset rate, and clock correction coefficient.
In an embodiment of the present application, the downlink indication message includes at least one of signaling information of MIB, SIB, RRC signaling, MAC CE signaling, and PDCCH.
In an embodiment of the present application, the receiving module 501 is configured to: and when the RRC connection state is exited, receiving a downlink indication message sent by the network equipment, wherein the downlink indication message carries the current satellite system configuration information.
In an embodiment of the present application, the terminal further includes a sending module 502, configured to send, to the network device, indication information, where the indication information is used to indicate the satellite system configuration information that the terminal requests to obtain;
a receiving module 501, configured to receive a downlink indication message sent by the network device according to the indication information, where the downlink indication message carries satellite system configuration information requested to be obtained by the terminal.
In the embodiment of the present application, the indication information is carried in signaling information of a PUCCH, MAC CE signaling, or RRC signaling.
In an embodiment of the present application, the receiving module 501 is configured to: and receiving a downlink indication message sent by the network equipment according to the indication information, wherein the downlink indication message is carried in signaling information of the PDCCH, Downlink Control Information (DCI), MAC CE signaling or RRC signaling.
In an embodiment of the present application, the receiving module 501 is configured to: and when the RRC connection state exits, receiving a downlink indication message sent by the network equipment according to the indication information, wherein the downlink indication message carries the current satellite system configuration information.
In an embodiment of the present application, the satellite system configuration information requested to be obtained includes at least one of:
satellite orbit height, satellite type, satellite inclination angle information, satellite ephemeris information, satellite almanac information, satellite orbit information valid time, beam direction information, beam width information, beam use frequency, beam coverage size, satellite load type, feeder link transmission distance, feeder link direction information, timing reference point, clock offset rate, clock correction coefficient.
In an embodiment of the present application, the terminal further includes a processing module 503, configured to determine a network parameter of the satellite according to the satellite system configuration information, and perform at least one of the following operations:
determining whether to randomly access a corresponding satellite cell based on the satellite orbit altitude or the satellite type in the satellite system configuration information;
determining the position information of the satellite based on ephemeris information of the satellite or almanac information of the satellite in the satellite system configuration information, wherein the position information is used for Doppler compensation, timing compensation or cell switching;
determining a coverage area of the satellite beam on the ground based on inclination angle information of the satellite or direction information, beam width information and beam coverage size of the beam in the satellite system configuration information;
determining Doppler compensation information based on the direction information of the beam;
determining timing compensation information or Doppler compensation information based on satellite load types, transmission distances of feeder links or direction information of the feeder links in the satellite system configuration information;
timing compensation information or clock adjustment information is determined based on a timing reference point, a clock offset rate, or a clock correction coefficient in the satellite system configuration information.
It should be noted that, the terminal provided in the embodiment of the present invention can implement all the method steps implemented by the method embodiment and achieve the same technical effect, and detailed descriptions of the same parts and beneficial effects as the method embodiment in this embodiment are omitted here.
Based on the same technical concept, the embodiment of the present application further provides a network device, and the network device can implement the method in the above embodiments.
Fig. 6 exemplarily shows a schematic structural diagram of a network-side device in an embodiment of the present application. As shown, the network side device may include: a processor 601, a memory 602, a transceiver 603, and a bus interface 604.
The processor 601 is responsible for managing the bus architecture and general processing, and the memory 602 may store data used by the processor 601 in performing operations. The transceiver 603 is used for receiving and transmitting data under the control of the processor 601.
The bus architecture may include any number of interconnected buses and bridges, with one or more processors, represented by processor 601, and various circuits of memory, represented by memory 602, 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 processor 601 is responsible for managing the bus architecture and general processing, and the memory 602 may store data used by the processor 601 in performing operations.
The processes disclosed in the embodiments of the present application can be applied to the processor 601, or implemented by the processor 601. In implementation, the steps of the signal processing flow may be implemented by integrated logic circuits of hardware or instructions in the form of software in the processor 601. The processor 601 may be a general purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or the like that implement or perform the methods, steps, and logic blocks disclosed in embodiments of the present application. A general purpose processor may be a microprocessor or any conventional processor or the like. The steps of a method disclosed in connection with the embodiments of the present application may be directly implemented by a hardware processor, or may be implemented by a combination of hardware and software modules in a processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in the memory 602, and the processor 601 reads the information in the memory 602 and completes the steps of the signal processing flow in combination with the hardware thereof. Specifically, the processor 601 is configured to read the computer instructions in the memory 602 and execute the functions implemented by the network device in the flowcharts shown in fig. 2 and fig. 3.
It should be noted that, the network device provided in the embodiment of the present invention can implement all the method steps implemented by the method embodiment and achieve the same technical effect, and detailed descriptions of the same parts and beneficial effects as those of the method embodiment in this embodiment are not repeated herein.
Based on the same technical concept, the embodiment of the application also provides a terminal, and the terminal can realize the method in the embodiment.
Fig. 7 schematically shows a structure of a terminal in the embodiment of the present application. As shown, the terminal may include: a processor 701, a memory 702, a transceiver 703, and a bus interface 704.
The processor 701 is responsible for managing the bus architecture and general processing, and the memory 702 may store data used by the processor 701 in performing operations. The transceiver 703 is used for receiving and transmitting data under the control of the processor 701.
The bus architecture may include any number of interconnected buses and bridges, with one or more processors, represented by processor 701, and various circuits, represented by memory 702, 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 processor 701 is responsible for managing the bus architecture and general processing, and the memory 702 may store data used by the processor 701 in performing operations.
The processes disclosed in the embodiments of the present application may be applied to the processor 701, or implemented by the processor 701. In implementation, the steps of the signal processing flow may be implemented by integrated logic circuits of hardware or instructions in the form of software in the processor 701. The processor 701 may be a general purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or the like that may implement or perform the methods, steps, and logic blocks disclosed in embodiments of the present application. A general purpose processor may be a microprocessor or any conventional processor or the like. The steps of a method disclosed in connection with the embodiments of the present application may be directly implemented by a hardware processor, or may be implemented by a combination of hardware and software modules in a processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in the memory 702, and the processor 701 reads the information in the memory 702 and completes the steps of the signal processing flow in combination with the hardware thereof. Specifically, the processor 701 is configured to read the computer instructions in the memory 702 and execute the functions implemented by the terminal in the flowcharts shown in fig. 2 and fig. 3.
It should be noted that, the terminal provided in the embodiment of the present invention can implement all the method steps implemented by the method embodiment and achieve the same technical effect, and detailed descriptions of the same parts and beneficial effects as the method embodiment in this embodiment are omitted here.
Embodiments of the present application further provide a computer-readable storage medium, where computer-executable instructions are stored, and the computer-executable instructions are used to enable a computer to execute the method performed by the network device in the foregoing embodiments.
The embodiment of the present application further provides a computer-readable storage medium, where computer-executable instructions are stored in the computer-readable storage medium, and the computer-executable instructions are used to enable a computer to execute the method executed by the terminal in the foregoing embodiment.
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, 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, 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.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to 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 present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.
Claims (23)
1. A method for indicating satellite system configuration information is applied to network equipment, and is characterized by comprising the following steps:
and sending a downlink indication message, wherein the downlink indication message carries satellite system configuration information, and the satellite system configuration information comprises at least one of satellite orbit height, satellite type, satellite inclination angle information, beam direction information, beam width information, beam coverage size, clock offset rate and clock correction coefficient.
2. The method of claim 1, wherein the downlink indication message comprises at least one of a master information block, MIB, a system information block, SIB, radio resource control, RRC, signaling, medium access control element, MAC CE, signaling information of a downlink control channel, PDCCH.
3. The method of claim 1, wherein the sending the downlink indication message comprises:
and when the terminal exits from the RRC connection state, sending the downlink indication message, wherein the downlink indication message carries the current satellite system configuration information.
4. The method of claim 1, further comprising:
receiving indication information sent by a terminal, wherein the indication information is used for indicating the satellite system configuration information requested to be acquired by the terminal;
the sending the downlink indication message includes:
and sending the downlink indication message according to the indication information, wherein the downlink indication message carries the satellite system configuration information requested to be acquired by the terminal.
5. The method of claim 4, wherein the indication information is carried in signaling information of an uplink control channel (PUCCH), MAC CE signaling, or RRC signaling.
6. The method of claim 4, wherein the sending the downlink indication message according to the indication information comprises:
and sending the downlink indication message to the terminal according to the indication information, wherein the downlink indication message is carried in signaling information of a PDCCH, downlink control information DCI, MAC CE signaling or RRC signaling.
7. The method of claim 6, wherein the sending the downlink indication message to the terminal according to the indication information comprises:
and when the terminal exits from the RRC connection state, sending the downlink indication message to the terminal according to the indication information, wherein the downlink indication message carries the current satellite system configuration information.
8. The method of any of claims 4-7, wherein the request for the acquisition of satellite system configuration information comprises at least one of:
satellite orbit height, satellite type, satellite inclination angle information, satellite ephemeris information, satellite almanac information, satellite orbit information valid time, beam direction information, beam width information, beam use frequency, beam coverage size, satellite load type, feeder link transmission distance, feeder link direction information, timing reference point, clock offset rate, clock correction coefficient.
9. A method for indicating satellite system configuration information, comprising:
receiving a downlink indication message sent by a network device, where the downlink indication message carries satellite system configuration information, and the satellite system configuration information includes at least one of a satellite orbit height, a satellite type, satellite tilt angle information, beam direction information, beam width information, beam coverage size, clock offset rate, and clock correction coefficient.
10. The method of claim 9, wherein the downlink indication message comprises at least one of a master information block, MIB, a system information block, SIB, radio resource control, RRC, signaling, medium access control element, MAC CE, signaling information of a downlink control channel, PDCCH.
11. The method of claim 9, wherein the receiving the downlink indication message sent by the network device comprises:
and when the RRC connection state exits, receiving the downlink indication message sent by the network equipment, wherein the downlink indication message carries the current satellite system configuration information.
12. The method of claim 9, further comprising:
sending indication information to network equipment, wherein the indication information is used for indicating the satellite system configuration information which is requested to be acquired by a terminal;
the receiving of the downlink indication message sent by the network device includes:
and receiving the downlink indication message sent by the network equipment according to the indication information, wherein the downlink indication message carries the satellite system configuration information requested to be acquired by the terminal.
13. The method of claim 12, wherein the indication information is carried in signaling information of an uplink control channel (PUCCH), media access control element (MAC CE) signaling, or Radio Resource Control (RRC) signaling.
14. The method of claim 12, wherein the receiving the downlink indication message sent by the network device according to the indication information comprises:
and receiving a downlink indication message sent by the network equipment according to the indication information, wherein the downlink indication message is carried in signaling information of the PDCCH, Downlink Control Information (DCI), MAC CE signaling or RRC signaling.
15. The method of claim 14, wherein the receiving the downlink indication message sent by the network device according to the indication information comprises:
and when the RRC connection state exits, receiving a downlink indication message sent by the network equipment according to the indication information, wherein the downlink indication message carries the current satellite system configuration information.
16. The method of any of claims 12-15, wherein the request for the acquisition of satellite system configuration information comprises at least one of:
satellite orbit height, satellite type, satellite inclination angle information, satellite ephemeris information, satellite almanac information, satellite orbit information valid time, beam direction information, beam width information, beam use frequency, beam coverage size, satellite load type, feeder link transmission distance, feeder link direction information, timing reference point, clock offset rate, clock correction coefficient.
17. The method of any one of claims 9-15, further comprising:
determining network parameters of the satellite according to the satellite system configuration information, and performing at least one of the following operations:
determining whether to randomly access a corresponding satellite cell based on the satellite orbit altitude or the satellite type in the satellite system configuration information;
determining position information of the satellite based on ephemeris information of the satellite or almanac information of the satellite in the satellite system configuration information, wherein the position information is used for Doppler compensation, timing compensation or cell switching;
determining a coverage area of the satellite beam on the ground based on inclination angle information of the satellite or direction information, beam width information and beam coverage size of the beam in the satellite system configuration information;
determining Doppler compensation information based on the directional information of the beam;
determining timing compensation information or Doppler compensation information based on satellite load types, transmission distances of feeder links or direction information of the feeder links in the satellite system configuration information;
determining timing compensation information or clock adjustment information based on a timing reference point, a clock offset rate, or a clock correction coefficient in the satellite system configuration information.
18. A network device, comprising:
the device comprises a sending module and a receiving module, wherein the sending module is used for sending downlink indication information, the downlink indication information carries satellite system configuration information, and the satellite system configuration information comprises at least one of satellite orbit height, satellite type, satellite inclination angle information, beam direction information, beam width information, beam coverage size, clock offset rate and clock correction coefficient.
19. A terminal, comprising:
the receiving module is configured to receive a downlink indication message sent by a network device, where the downlink indication message carries satellite system configuration information, and the satellite system configuration information includes at least one of a satellite orbit height, a satellite type, satellite tilt angle information, beam direction information, beam width information, beam coverage size, clock offset rate, and clock correction coefficient.
20. A network device comprising a processor, a memory, a transceiver;
the transceiver receives and transmits data under the control of the processor;
the memory storing computer instructions;
the processor, reading the computer instructions, performing the method of any one of claims 1-8.
21. A terminal comprising a processor, a memory, a transceiver;
the transceiver receives and transmits data under the control of the processor;
the memory storing computer instructions;
the processor, configured to read the computer instructions, to perform the method according to any one of claims 9-17.
22. A computer-readable storage medium having stored thereon computer-executable instructions for causing a computer to perform the method of any one of claims 1-8.
23. A computer-readable storage medium having stored thereon computer-executable instructions for causing a computer to perform the method of any one of claims 9-17.
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| CN202010726002.4A CN113972944A (en) | 2020-07-24 | 2020-07-24 | Method and device for indicating satellite system configuration information |
| PCT/CN2021/095777 WO2022016990A1 (en) | 2020-07-24 | 2021-05-25 | Indication method and device for satellite system configuration information |
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| CN202010726002.4A CN113972944A (en) | 2020-07-24 | 2020-07-24 | Method and device for indicating satellite system configuration information |
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| CN115550947B (en) * | 2022-11-25 | 2023-08-18 | 北京九天微星科技发展有限公司 | Uplink sounding reference signal transmission method and equipment |
| WO2024207368A1 (en) * | 2023-04-06 | 2024-10-10 | 北京小米移动软件有限公司 | Satellite coverage information determination method and apparatus |
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