Communication method, communication device, readable storage medium, program product and chip system

Abstract

The invention relates to a communication method, a communication device, a computer readable storage medium, a computer program product and a chip system. The communication method comprises the following steps: acquiring position information of first network equipment and second network equipment, and determining a first area and a second area; wherein the first area is an overlapping area of an area covered by a signal sent by the first network equipment and an area covered by a signal sent by the second network equipment, and an included angle between a connecting line between the first network equipment and the first area and a motion direction of the first network equipment is greater than or equal to 90 degrees; the second area is an area which is not overlapped with the first area in areas covered by signals sent by the first network equipment; and configuring a first field in the first message corresponding to the first area as a first identifier, and configuring a first field in the first message corresponding to the second area as a second identifier. By adopting the method, the switching overhead of the terminal equipment between the non-ground network equipment can be reduced.

Description

Technical Field

[0001] The present application relates to the field of communication technology, and in particular to a communication method, a communication device, a computer-readable storage medium, a computer program product, and a chip system. Background Art

[0002] Non-terrestrial networks have the characteristics of large communication range and high reliability, and have been increasingly widely used. Non-terrestrial networks provide wide-area coverage and communication services through the coordinated work of multiple network devices.

[0003] Taking satellite communication network as an example, the area covered by the signal sent by a single satellite is usually circular. In order to ensure seamless coverage, the areas covered by the signals sent by multiple satellites are overlapped and connected. When the signal coverage area of ​​the non-terrestrial network moves dynamically relative to the terminal device, the related technology has the problem of frequent switching of the terminal device between network devices. Summary of the invention

[0004] Based on this, it is necessary to provide a communication method, communication device, computer-readable storage medium, computer program product and chip system that can reduce the switching overhead of terminal equipment between non-terrestrial network equipment in response to the above-mentioned technical problems.

[0005] In a first aspect, the present application provides a communication method, applied to a first network device, the method comprising:

[0006] Acquire location information of the first network device and the second network device, and determine a first area and a second area based on the location information; wherein the first area is an overlapping area of ​​an area covered by a signal sent by the first network device and an overlapping area of ​​an area covered by a signal sent by the second network device, and an angle between a line between the first network device and the first area and a movement direction of the first network device is greater than or equal to 90 degrees; and the second area is an area in the area covered by the signal sent by the first network device that does not overlap with the first area;

[0007] The first field in the first message corresponding to the first area is configured as a first identifier, and the first field in the first message corresponding to the second area is configured as a second identifier; wherein the first identifier is used to indicate that the terminal device is prohibited from accessing the first network device, and the second identifier is used to indicate that the terminal device is allowed to access the first network device.

[0008] In one embodiment, the first message is a main information block (MIB), the first field is a cell access control field (cellBarred), the first identifier is barred, and the second identifier is notBarred; or,

[0009] The first message is a system information block 1 (SIB1), the first field is a cell access control field (cellBarredNTN) for a non-terrestrial network (NTN), the first identifier is barred, and the second identifier is notBarred.

[0010] In one of the embodiments, the first message is other system information (OSI), and the first field is used to indicate whether the terminal device is allowed to access the first network device.

[0011] In a second aspect, the present application provides a communication method, applied to a terminal device, the method comprising:

[0012] When the terminal device is in an idle state and located in a first area, obtaining a first message corresponding to the first area sent by a first network device;

[0013] In response to the first field in the first message corresponding to the first area being configured as a first identifier, access to the first network device is prohibited; wherein the first area is an overlapping area covered by an area covered by a signal sent by the first network device and an overlapping area covered by a signal sent by the second network device, and an angle between a line between the first network device and the first area and a movement direction of the first network device is greater than or equal to 90 degrees.

[0014] In one of the embodiments, the first message is a system information block 1 (SIB1), the first field is a cell access control field (cellBarredNTN) for a non-terrestrial network (NTN), and the first identifier is barred.

[0015] In one embodiment, the method further comprises:

[0016] When the terminal device is in an idle state and is located in the second area, obtaining a first message corresponding to the second area sent by the first network device;

[0017] In response to the first field in the first message corresponding to the second area being configured as a second identifier, accessing the first network device; the second identifier is notBarred; the second area is an area covered by the signal sent by the first network device that does not overlap with the first area.

[0018] In one embodiment, the method further comprises:

[0019] Acquire a first message sent by a first network device;

[0020] When the terminal device is in a connected state and is located in the first area, ignoring the first identifier in the first message and maintaining the connection with the first network device;

[0021] When the terminal device is in a connected state and is located in the second area, in response to the first field in the first message being configured as a second identifier, the connection with the first network device is maintained.

[0022] In one embodiment, the first message is a main information block (MIB), the first field is a cell access control field (cellBarred), and the first identifier is barred; or,

[0023] The first message is other system information (OSI), and the first field is used to indicate whether the terminal device is allowed to access the first network device.

[0024] In one embodiment, the method further comprises:

[0025] When the terminal device is in an idle state and is located in the second area, obtaining a first message and a second message corresponding to the second area sent by the first network device;

[0026] In response to the first field in the first message corresponding to the second area being configured as the second identifier, and the second field in the second message corresponding to the second area being configured as the second identifier, accessing the first network device; the second identifier is notBarred.

[0027] In one embodiment, the method further comprises:

[0028] Acquire a first message and a second message sent by a first network device;

[0029] When the terminal device is in a connected state, ignore the first field in the first message, and in response to the second field in the second message being configured as the second identifier, maintain the connection with the first network device; or, in response to the second field in the second message being configured as the first identifier, disconnect the connection with the first network device.

[0030] In a third aspect, the present application further provides a communication device, including:

[0031] A transceiver module, used to obtain location information of the first network device and the second network device;

[0032] A processing module, used to determine a first area and a second area based on the location information; wherein the first area is an overlapping area of ​​an area covered by a signal sent by the first network device and an overlapping area covered by a signal sent by the second network device, and the angle between a line between the first network device and the first area and a movement direction of the first network device is greater than or equal to 90 degrees; the second area is an area that does not overlap with the first area in the area covered by the signal sent by the first network device; the first field in the first message corresponding to the first area is configured as a first identifier, and the first field in the first message corresponding to the second area is configured as a second identifier; wherein the first identifier is used to indicate that a terminal device is prohibited from accessing the first network device, and the second identifier is used to indicate that a terminal device is allowed to access the first network device.

[0033] In a fourth aspect, the present application further provides a communication device, including:

[0034] A transceiver module, configured to obtain, when the terminal device is in an idle state and located in a first area, a first message corresponding to the first area sent by a first network device;

[0035] A processing module, used to prohibit access to the first network device in response to the first field in the first message corresponding to the first area being configured as a first identifier; wherein the first area is an overlapping area covered by an area covered by a signal sent by the first network device and an overlapping area covered by a signal sent by a second network device, and an angle between a line between the first network device and the first area and a movement direction of the first network device is greater than or equal to 90 degrees.

[0036] In a fifth aspect, the present application further provides a computer-readable storage medium having a computer program stored thereon, and when the computer program is executed by a processor, the steps of any of the methods described above are implemented.

[0037] In a sixth aspect, the present application also provides a computer program product, including a computer program, which implements the steps of any of the methods described above when executed by a processor.

[0038] In a seventh aspect, the present application also provides a chip system, comprising: a processor, configured to call and run a computer program from a memory, so that a communication device equipped with the chip system executes any of the methods described above.

[0039] The above-mentioned communication method, communication device, computer-readable storage medium, computer program product and chip system, by dividing the signal coverage area of ​​the network device on the network device side into an overlapping area with the signal coverage areas of other network devices, a first area away from the terminal device and a second area other than the first area, and configuring the first field in the first message sent by the network device to the first area to indicate that the terminal device is prohibited from accessing the network device, can achieve that when the terminal device is located in the first area of ​​the network device, the terminal device chooses to prohibit access to the network device according to the configuration of the first field in the received first message, thereby avoiding the situation that the signal coverage area of ​​the network device no longer covers the terminal device or the coverage signal quality decreases within a short period of time after the terminal device accesses the network device, and the terminal device needs to switch to other network devices, thereby reducing the switching overhead of the terminal device; the first field in the first message sent by the network device to the second area is configured to indicate that the terminal device is allowed to access the network device, thereby achieving that when the terminal device is located in the second area of ​​the network device, the terminal device chooses to access the network device according to the configuration of the first field in the received first message, thereby achieving the situation that the time for the terminal device to connect to the network device is extended as much as possible, thereby reducing the switching overhead of the terminal device. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the technical solutions in the embodiments of the present application or related technologies, the drawings required for use in the embodiments of the present application or related technical descriptions will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0041] Figure 1 A schematic diagram of an area covered by a signal sent by a satellite and an overlapping area between areas covered by the signal in one embodiment;

[0042] Figure 2 is a flow chart of a communication method in one embodiment;

[0043] Figure 3 A schematic top view of an area covered by a signal sent by a satellite and an overlapping area between areas covered by the signal in one embodiment;

[0044] Figure 4 A schematic diagram of an area covered by a signal sent by a satellite and an overlapping area between areas covered by the signal in another embodiment;

[0045] Figure 5 is a flow chart of a communication method in one embodiment;

[0046] Figure 6A schematic flow chart of steps for accessing a first network device according to an embodiment;

[0047] Figure 7 A flowchart of steps for maintaining a connection with a first network device according to an embodiment;

[0048] Figure 8 A flowchart of steps for accessing a first network device according to another embodiment;

[0049] Fig. 9 A schematic flow chart of steps for maintaining / disconnecting a connection with a first network device in one embodiment;

[0050] Fig.10 is a structural block diagram of a communication device in one embodiment;

[0051] Fig.11 is a structural block diagram of a communication device in one embodiment;

[0052] Fig.12 FIG. 4 is a diagram showing the internal structure of a computer device in one embodiment. DETAILED DESCRIPTION

[0053] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0054] Please refer to Figure 1 , the area covered by the signals sent by satellite A and satellite B is circular, and there are overlapping areas between the signal coverage areas. For example, when the satellite's orbital altitude H is 600 kilometers and the coverage radius R is 1000 kilometers, in order to ensure seamless coverage, the length L of the overlapping area needs to be greater than or equal to 268 kilometers. There may be a large number of terminal devices in the overlapping area, including connected terminal devices and idle terminal devices. Terminal devices in idle state may be connected to satellite A or satellite B. When satellite A and satellite B move from right to left (such as Figure 1 As shown in the figure, satellite A is moving away from the terminal device in the overlapping area, and satellite B is approaching the terminal device. If a terminal device accesses satellite A at this time, since satellite A is moving at high speed and covers the terminal device for a short time, the terminal device may fail to access satellite A, or the terminal device needs to switch to satellite B soon after accessing satellite A, which increases the switching overhead. Therefore, the present application proposes a technical solution for the terminal device to access satellite B, which will not switch satellites for a period of time after access (for example, about 3 to 4 minutes), thereby reducing the switching overhead.

[0055] The satellite emits multiple beams, and each cell includes at least one beam. The terminal device accesses the satellite through the cell where it is located. In the related technology, the NR (New Radio) protocol defines the S criterion for cell selection. The terminal device will first search the RF channel in the frequency band, select the strongest cell on each carrier frequency, read the system information of the cell, and then judge the cells in turn according to the S criterion. If the cell meets the S criterion, the cell is considered suitable and selected for residence; if the cell does not meet the S criterion, the cell of the next carrier frequency will continue to be judged until a cell meets the S criterion. Specifically, when S rxlev >0 and S qual >0, the S criterion is met. Among them, S rxlev Indicates the cell selection received signal strength value, calculated by the terminal device; S qual Indicates the quality of the cell selected received signal, calculated by the terminal device.

[0056] S rxlev The calculation formula includes: S rxlev =Q rxlevmeas -(Q rxlevmin +Q rxlevminoffse )-P compensation ; Among them, Q rxlevmeas Indicates the level of the signal received by the measured cell, also known as the reference signal receiving power (RSRP); Q rxlevmin Indicates the minimum threshold of the UE (User Equipment) receiving signal level, which is used to prevent the UE from accessing a cell with a very low level; Q rxlevminoffset Indicates that when you normally reside in a VPLMN (VisitedPLMN) cell, when you periodically search for a higher-level PLMN (Public Land Mobile Network), you can rxlevmin Bias of P compensation Indicates (P EMAX -P PowerClass ) and 0; P EMAX Indicates the maximum allowed transmit power of UE; P PowerClass Indicates the maximum transmit power supported by UE capabilities.

[0057] S qual The calculation formula includes: S qual =Q qualmeas -(Q qualmin +Q qualminoffset ); where Q qualmeasIndicates the received signal quality value of the measured cell, also known as the reference signal receiving quality (RSRQ); Q qualmin Indicates the minimum threshold of the UE received signal quality value, which is used to prevent the UE from accessing a cell with very low signal quality; Q qualminoffset Indicates that when normally staying in a VPLMN cell, when performing a higher-level PLMN periodic search, the Q qualmin The bias.

[0058] Please continue to refer to Figure 1 When the terminal device selects a cell to access according to the S criterion, the RSRP and RSRQ of the synchronization signal block (SSB) signal sent by satellite A after reaching the terminal device may meet the S criterion. At this time, the terminal device will access the cell of satellite A, increasing the switching overhead.

[0059] Based on actual technical requirements similar to those described above, an embodiment of the present application provides a communication method, which performs regional configuration on the first field in the first message according to the first area and the second area in the area covered by the signal sent by the first network device, and the method is applied to the first network device. The first message includes but is not limited to the Master Information Block (MIB), System Information Block #1 (SIB1), and Other System Information (OSI), and the first field is the cell access control field in these first messages. Figure 2 As shown, the method may include the following steps:

[0060] Step S110, obtaining location information of the first network device and the second network device, and determining a first area and a second area based on the location information; wherein the first area is an overlapping area of ​​an area covered by a signal sent by the first network device and an overlapping area covered by a signal sent by the second network device, and an angle between a line between the first network device and the first area and a movement direction of the first network device is greater than or equal to 90 degrees; and the second area is an area in the area covered by the signal sent by the first network device that does not overlap with the first area.

[0061] Among them, the network device realizes non-ground network communication, which means that the communication network does not rely on traditional ground infrastructure, but mainly relies on satellites, high-altitude platforms (such as drones, airships, balloons) and hybrid air-ground systems to achieve wide-area coverage. The first network device and the second network device include but are not limited to satellites, high-altitude platforms, base stations, etc. The first network device and the second network device are used to realize non-ground networks. For example, the first network device and the second network device can be satellites in the same orbit (such as Figure 1 Satellite A and Satellite B shown). Alternatively, refer to Figure 3 The first network device and the second network device may also be satellites in different orbits (eg Figure 3 The first network device and the second network device may be configured in a manner such that the relative position relationship between the first network device and the second network device is fixed, and the sizes of the first area and the second area may be fixed, and the first area and the second area move with the movement of the first network device. Specifically, the sizes of the first area and the second area may be related to the satellite orbit height, coverage radius, beam direction, number of system satellites, satellite spacing, etc.

[0062] The area covered by the signal sent by the first network device includes a first area that overlaps with the area covered by the signal sent by the second network device, and the angle between the line between the first network device and the first area and the movement direction of the first network device is greater than or equal to 90 degrees. Figure 1 , when the first network device is satellite A, and the second network device is satellite B, the overlapping area S1 where the terminal device is located is the first area of ​​satellite A. At this time, when satellite A continues to move along the current moving direction, the first area S1 of satellite A will move away from the terminal device UE1. Figure 1 Taking the example of an overlapping area between an area covered by signals sent by a first network device and a second network device, it can be understood that the first network device may also have an overlapping area with an area covered by signals sent by multiple second network devices. The embodiment of the present application does not limit the number of overlapping areas in the area covered by the signal sent by the first network device.

[0063] The area covered by the signal sent by the first network device also includes a second area that does not overlap with the first area. Figure 4, the first network device is satellite A, the second network device includes satellite B and satellite D, and the second area S2 may include a first sub-area S21 and a second sub-area S22. The first sub-area S21 is the overlapping area of ​​the area covered by the signal sent by satellite A and the area covered by the signal sent by satellite D, and the angle between the line between satellite A and the first sub-area S21 and the direction of movement of satellite A is less than 90 degrees; the second sub-area S22 is the area in the second area S2 that does not overlap with the first sub-area S21, that is, a non-overlapping area. At this time, when satellite A continues to move along the current direction of movement, the second area S2 of satellite A will be close to the terminal device UE2.

[0064] Step S120, configure the first field in the first message corresponding to the first area as a first identifier, and configure the first field in the first message corresponding to the second area as a second identifier; wherein the first identifier is used to indicate that the terminal device is prohibited from accessing the first network device, and the second identifier is used to indicate that the terminal device is allowed to access the first network device.

[0065] Among them, the first message includes but is not limited to the master information block (MIB), the system information block 1 (SIB1), and other system information (OSI), and the first field is the cell access control field in these first messages. MIB can be broadcast periodically through the synchronization signal block (SSB), and contains key information required for cell access, such as: system bandwidth, system frame number, cell access control information (such as cellBarred field), etc. MIB is the information that the terminal device first reads when initially accessing the network. SIB1 can be broadcast through the downlink shared channel (DL-SCH), and contains key information required for cell selection and reselection, such as: cell access related parameters (such as cellBarredNTN field, PLMN list, cell barring status, etc.), OSI scheduling information, etc. SIB1 is the next system information block that the terminal device needs to read after reading MIB. OSI can be broadcast periodically or dynamically sent in response to a request sent by the terminal device. OSI can be configured with a custom regional cell access control field.

[0066] Exemplarily, the first field in the first message corresponding to the beam pointing to the first area can be configured as the first identifier, and the first field in the first message corresponding to the beam pointing to the second area can be configured as the second identifier. Furthermore, the first network device can send the first message with the first field configured as the first identifier to the terminal device located in the first area, indicating that the terminal device is prohibited from accessing the first network device; and can send the first message with the first field configured as the second identifier to the terminal device located in the second area, indicating that the terminal device is allowed to access the first network device.

[0067] It should be noted that the first area and the second area are relative to specific network devices. For example, please continue to refer to Figure 1 The overlapping area where the terminal device is located is the first area of ​​satellite A and belongs to the second area of ​​satellite B. That is, the overlapping area is far away from the terminal device for satellite A and close to the terminal device for satellite B.

[0068] In the related art, according to the description in section 6.2.2 of the 3GPP TS 38.331 protocol, the cellBarred field in the MIB is used to indicate whether the cell allows user access, but this field is not applicable to non-terrestrial network (NTN) users. When NTN users want to access the NTN network, the cellBarred field will be ignored. For NTN users, 3GPP introduced the cellBarredNTN-r17 field in the R17 stage to indicate whether the cell allows NTN users to access. The cellBarredNTN-r17 field is included in SIB1. However, in the related art, the cellBarred field and the cellBarredNTN-r17 field are cell-level parameters, and modifying their configuration may affect the access of users within the entire satellite coverage area. In the above communication method, by dividing the signal coverage area of ​​the network device on the network device side into an overlapping area with the signal coverage areas of other network devices, a first area away from the terminal device and a second area other than the first area, the first field in the first message sent by the network device to the first area is configured to indicate that the terminal device is prohibited from accessing the first network device. This can achieve that when the terminal device is located in the first area of ​​the network device, the terminal device chooses to prohibit access to the network device according to the configuration of the first field in the received first message, thereby avoiding the situation where the signal coverage area of ​​the network device no longer covers the terminal device or the coverage signal quality decreases within a short period of time after the terminal device accesses the network device, and the terminal device needs to switch to other network devices, thereby reducing the switching overhead of the terminal device; the first field in the first message sent by the network device to the second area is configured to indicate that the terminal device is allowed to access the first network device. This can achieve that when the terminal device is located in the second area of ​​the network device, the terminal device chooses to access the network device according to the configuration of the first field in the received first message, thereby extending the time for the terminal device to connect to the network device as much as possible, thereby reducing the switching overhead of the terminal device.

[0069] Optionally, the above-mentioned first message can be a master information block (MIB), the first field is a cell access control field (cellBarred), the first identifier is barred, and the second identifier is notBarred; or, the first message can be a system information block 1 (SIB1), the first field is a cell access control field (cellBarredNTN) for a non-terrestrial network (NTN), the first identifier is barred, and the second identifier is notBarred.

[0070] In a possible implementation, a master information block (MIB) may be used as the first message, and the first network device may configure the cellBarred field in the MIB corresponding to the first area as "barred", and configure the cellBarred field in the MIB corresponding to the second area as "notBarred". Furthermore, after configuring the cellBarred field in the MIB at the regional level, cellBarredNTN=notBarred in SIB1 may also be configured at the cell level.

[0071] Among them, area-level configuration refers to different configurations of the first message sent to the first area and the second area in the area covered by the signal sent by the first network device, and cell-level configuration refers to the same configuration of the first message sent to the area covered by the signal sent by the first network device.

[0072] In another possible implementation, system information block 1 (SIB1) may be used as the first message, and the first network device may configure the cellBarredNTN field in the SIB1 corresponding to the first area to "barred", and configure the cellBarredNTN field in the SIB1 corresponding to the second area to "notBarred". Here, the transmission period of SIB1 may be configured to a larger value (for example, configured to a maximum value of 160 milliseconds).

[0073] Optionally, the first message may be other system information (OSI), and the first field is used to indicate whether the terminal device is allowed to access the first network device.

[0074] In one possible implementation, other system information (OSI) can be used as the first message, and a new zone-level cell access control field (zoneLevelCellBarred) can be added in OSI as the first field. The first network device can configure the zoneLevelCellBarred field in the OSI corresponding to the first area as "barred", and configure the zoneLevelCellBarred field in the OSI corresponding to the second area as "notBarred". Here, changes in the zoneLevelCellBarred field will not trigger the system message change process. Furthermore, after configuring the zoneLevelCellBarred field in OSI at the regional level, cellBarredNTN=notBarred in SIB1 can also be configured at the cell level.

[0075] Optionally, the first message is a radio resource control (Radio Resource Control, RRC) message, and the first field is used to indicate whether the terminal device is allowed to access the first network device; or,

[0076] The first message is downlink control information (Downlink Control Information, DCI), and the first field is used to indicate whether the terminal device is allowed to access the first network device; or,

[0077] The first message is a medium access control control element (MAC CE), and the first field is used to indicate whether the terminal device is allowed to access the first network device.

[0078] Based on the same inventive concept, the embodiment of the present application also provides a communication method, which is applied to a terminal device, referring to Figure 5 As shown, the method may include the following steps:

[0079] Step S211: When the terminal device is in an idle state and located in a first area, a first message corresponding to the first area sent by a first network device is obtained.

[0080] Step S212, in response to the first field in the first message corresponding to the first area being configured as the first identifier, access to the first network device is prohibited; wherein the first area is an overlapping area of ​​an area covered by a signal sent by the first network device and an area covered by a signal sent by the second network device, and an angle between a line between the first network device and the first area and a movement direction of the first network device is greater than or equal to 90 degrees.

[0081] The area covered by the signal sent by the first network device includes a first area overlapping with the area covered by the signal sent by the second network device, and the angle between the line between the first network device and the first area and the movement direction of the first network device is greater than or equal to 90 degrees, and the area covered by the signal sent by the first network device also includes a second area that does not overlap with the first area. The first network device is used to send a first message to terminal devices in the first area and the second area. The first message can be any one of a master information block (MIB), a system information block 1 (SIB1), and other system information (OSI), and the first field is a cell access control field in these first messages. The terminal device can be, but is not limited to, various personal computers, laptops, smart phones, tablet computers, Internet of Things devices, and portable wearable devices. The Internet of Things devices can be smart speakers, smart TVs, smart air conditioners, smart car devices, projection devices, etc. The portable wearable device can be a smart watch, a smart bracelet, a head-mounted device, etc. The head-mounted device can be a virtual reality (VR) device, an augmented reality (AR) device, smart glasses, etc.

[0082] In the above communication method, by determining on the terminal device side that the terminal device is in an idle state, access to the network device is prohibited according to the instructions of the first field in the first message sent by the network device to the first area where the terminal device is located. This can achieve a situation where the first field in the first message sent by the network device on the network device side to a first area far away is configured to indicate that the terminal device is prohibited from accessing the network device. This avoids the situation where the signal coverage area of ​​the network device no longer covers the terminal device within a short period of time after the terminal device accesses the network device, and the terminal device needs to switch to other network devices, thereby reducing the switching overhead of the terminal device.

[0083] Optionally, the first message may be a system information block 1 (SIB1), the first field may be a cell access control field (cellBarredNTN) for a non-terrestrial network (NTN), and the first identifier may be barred.

[0084] In one possible implementation, when the terminal device is in an idle state and located in a first area of ​​a first network device, the terminal device can receive a system information block 1 (SIB1) sent by the first network device. The terminal device can prohibit access to the first network device in response to the cellBarredNTN field in the SIB1 sent by the first network device being configured as "barred".

[0085] Furthermore, if Figure 6 As shown, the above communication method may also include:

[0086] Step S221: When the terminal device is in an idle state and located in a second area, a first message corresponding to the second area sent by a first network device is obtained.

[0087] Step S222, in response to the first field in the first message corresponding to the second area being configured as the second identifier, accessing the first network device; the second identifier is notBarred; the second area is an area covered by the signal sent by the first network device that does not overlap with the first area.

[0088] In one possible implementation, when the terminal device is in an idle state and located in the second area of ​​the first network device, the terminal device can receive a system information block 1 (SIB1) sent by the first network device. The terminal device can access the first network device in response to the cellBarredNTN field in the SIB1 sent by the first network device being configured as "notBarred".

[0089] Specifically, when the terminal device is in an idle state and is located in the first sub-area (overlapping area) of the second area of ​​the first network device, the terminal device can receive SIB1 sent by the first network device and the second network device. The terminal device can access the first network device in response to the cellBarredNTN field in the SIB1 sent by the first network device being configured as "notBarred"; the terminal device can prohibit access to the second network device in response to the cellBarredNTN field in the SIB1 sent by the second network device being configured as "Barred". For example, please continue to refer to Figure 1 When the terminal device is in an idle state and is located in the first sub-area (overlapping area) of the second area S2 of satellite B, the terminal device can receive SIB1 sent by satellite A and satellite B. The terminal device can access satellite A in response to the cellBarredNTN field in the SIB1 sent by satellite A being configured as "notBarred"; the terminal device can prohibit access to satellite B in response to the cellBarredNTN field in the SIB1 sent by satellite B being configured as "Barred".

[0090] When the terminal device is in an idle state and is located in the second sub-area (non-overlapping area) in the second area S2 of the first network device, the terminal device can receive the SIB1 sent by the first network device. The terminal device can access the first network device in response to the cellBarredNTN field in the SIB1 sent by the first network device being configured as "notBarred".

[0091] In this embodiment, by determining on the terminal device side that the terminal device is in an idle state, access to the network device is performed according to the cellBarredNTN field in the SIB1 of the second area where the network device sends the terminal device to the terminal device being configured as "notBarred". This can achieve the situation where the cellBarredNTN field in the SIB1 sent by the network device to the second area nearby is configured as "notBarred", thereby extending the time the terminal device is connected to the network device as much as possible, thereby reducing the switching overhead of the terminal device.

[0092] Furthermore, if Figure 7 As shown, the above communication method may also include:

[0093] Step S231: Acquire a first message sent by a first network device.

[0094] Step S232: When the terminal device is in a connected state and is located in the first area, ignore the first identifier in the first message and maintain the connection with the first network device.

[0095] In one possible implementation, when the terminal device is in a connected state (transmitting data with a first network device) and is located in a first area of ​​the first network device, the terminal device can receive a system information block 1 (SIB1) sent by the first network device. The terminal device can, in a case where the cellBarredNTN field in the SIB1 sent by the first network device is configured as "barred", ignore the cellBarredNTN field in SIB1 and maintain connection with the first network device in response to determining that its current location belongs to an overlapping area based on location information (e.g., ephemeris information) of the first network device.

[0096] Step S233: When the terminal device is in a connected state and is located in the second area, in response to the first field in the first message being configured as the second identifier, the terminal device maintains connection with the first network device.

[0097] In one possible implementation, when the terminal device is in a connected state and is located in a second area of ​​a first network device, the terminal device can receive a system information block 1 (SIB1) sent by the first network device, and the first network device can maintain the connection with the first network device in response to the cellBarredNTN field in the SIB1 sent by the first network device being configured as "notBarred".

[0098] In this embodiment, by determining on the terminal device side that the terminal device is in a connected state, ignoring that the cellBarredNTN field in the SIB1 of the first area where the network device sends the terminal device is located is configured as "barred", and maintaining the connection with the network device; or, according to the cellBarredNTN field in the SIB1 of the second area where the network device sends the terminal device is located is configured as "notBarred", maintaining the connection with the network device, it can be achieved that when the network device side sends the network device to the cellBarredNTN field in the SIB1 of the distant first area is configured as "barred", and sends the network device to the cellBarredNTN field in the SIB1 of the close second area is configured as "notBarred", the time for the terminal device to connect to the network device is further extended, thereby reducing the switching overhead of the terminal device.

[0099] Optionally, the first message may be a master information block (MIB), the first field may be a cell access control field (cellBarred), and the first identifier may be barred; or, the first message may be other system information (OSI), and the first field may be used to indicate whether the terminal device is allowed to access the first network device.

[0100] In one possible implementation, when the terminal device is in an idle state and located in a first area of ​​a first network device, the terminal device can receive a master information block (MIB) sent by the first network device. The terminal device can prohibit access to the first network device in response to the cellBarred field in the MIB sent by the first network device being configured as "barred".

[0101] In another possible implementation, when the terminal device is in an idle state and located in the first zone of a first network device, the terminal device can receive other system information (OSI) sent by the first network device, and the terminal device can respond to the first field in the OSI sent by the first network device being configured to indicate that the terminal device is prohibited from accessing the first network device, for example, the zoneLevelCellBarred field is configured to "barred", prohibiting access to the first network device.

[0102] Furthermore, if Figure 8 As shown, the above communication method may also include:

[0103] Step S241, when the terminal device is in an idle state and located in a second area, obtain a first message and a second message corresponding to the second area sent by a first network device.

[0104] Step S242: In response to the first field in the first message corresponding to the second area being configured as the second identifier, and the second field in the second message corresponding to the second area being configured as the second identifier, accessing the first network device; the second identifier is notBarred.

[0105] The first message may be a master information block (MIB), and the first field may be a cell access control field (cellBarred); or the first message may be other system information (OSI), and the first field may be used to indicate whether the terminal device is allowed to access the first network device. The second message may be a system information block 1 (SIB1), and the second field may be a cell access control field (cellBarredNTN) for a non-terrestrial network (NTN).

[0106] In one possible implementation, when the terminal device is in an idle state and located in the second area of ​​the first network device, the terminal device can receive a master information block (MIB) and a system information block 1 (SIB1) sent by the first network device, and the terminal device can access the first network device in response to the cellBarred field in the MIB sent by the first network device being configured as "notBarred" and the cellBarredNTN field in the SIB1 sent by the first network device being configured as "notBarred".

[0107] In another possible implementation, when the terminal device is in an idle state and located in the second zone of the first network device, the terminal device can receive other system information (OSI) and system information block 1 (SIB1) sent by the first network device, and the terminal device can access the first network device in response to the zoneLevelCellBarred field in the OSI sent by the first network device being configured as "notBarred" and the cellBarredNTN field in the SIB1 sent by the first network device being configured as "notBarred".

[0108] In this embodiment, by determining on the terminal device side that the terminal device is in an idle state, in response to the first field in the first message sent by the network device to the second area where the terminal device is located (the cellBarred field in the MIB or the newly added first field in the OSI) and the second field in the second message (the cellBarredNTN field in SIB1) are both configured as "notBarred", access to the network device can achieve the situation where the first field in the first message sent by the network device to the nearby second area is configured as "notBarred" on the network device side, and the second fields in the second message are configured as "notBarred", thereby extending the time for the terminal device to connect to the network device as much as possible, thereby reducing the switching overhead of the terminal device.

[0109] Furthermore, if Fig. 9 As shown, the above communication method may also include:

[0110] Step S251: Acquire a first message and a second message sent by a first network device.

[0111] Step S252, when the terminal device is in a connected state, ignore the first field in the first message, and in response to the second field in the second message being configured as the second identifier, maintain the connection with the first network device; or, in response to the second field in the second message being configured as the first identifier, disconnect the connection with the first network device.

[0112] In a possible implementation, when the terminal device is in a connected state (transmitting data with the first network device), the terminal device can receive the master information block (MIB) and system information block 1 (SIB1) sent by the first network device, and the terminal device can ignore the cellBarred field in the MIB sent by the first network device, and in response to the cellBarredNTN field in the SIB1 sent by the first network device being configured as "notBarred", maintain the connection with the first network device. At this time, the terminal device can be located in the first area or the second area of ​​the first network device, that is, the cellBarred field in the MIB can be configured as "barred" or "notBarred".

[0113] In another possible implementation, when the terminal device is in a connected state, the terminal device can receive other system information (OSI) and system information block 1 (SIB1) sent by the first network device, and the terminal device can ignore the zoneLevelCellBarred field in the OSI sent by the first network device, and in response to the cellBarredNTN field in the SIB1 sent by the first network device being configured as "notBarred", maintain the connection with the first network device. At this time, the terminal device can be located in the first zone or the second zone of the first network device, that is, the zoneLevelCellBarred field in the OSI can be configured as "barred" or "notBarred".

[0114] In another possible implementation, when the terminal device is in a connected state, the terminal device can receive a first message (MIB / OSI) and a second message (SIB1) sent by a first network device, and the terminal device can disconnect from the first network device in response to the cellBarredNTN field in the SIB1 sent by the first network device being configured as "Barred".

[0115] In this embodiment, by judging on the terminal device side that the terminal device is in a connected state, ignoring the first field in the first message sent by the network device to the terminal device (the cellBarred field in the MIB or the first field newly added in the OSI), and in response to the second field in the second message (the cellBarredNTN field in the SIB1) being configured as "notBarred", maintaining the connection with the network device, it can be achieved that when the network device side configures the first field in the first message sent by the network device to a distant first area as "barred" / "notBarred", and the second field in the second message is configured as "notBarred", the time for the terminal device to connect to the network device is further extended, thereby reducing the switching overhead of the terminal device.

[0116] It should be understood that, although the various steps in the flowcharts involved in the above-mentioned embodiments are displayed in sequence according to the indication of the arrows, these steps are not necessarily executed in sequence according to the order indicated by the arrows. Unless there is a clear explanation in this article, the execution of these steps does not have a strict order restriction, and these steps can be executed in other orders. Moreover, at least a part of the steps in the flowcharts involved in the above-mentioned embodiments can include multiple steps or multiple stages, and these steps or stages are not necessarily executed at the same time, but can be executed at different times, and the execution order of these steps or stages is not necessarily to be carried out in sequence, but can be executed in turn or alternately with other steps or at least a part of the steps or stages in other steps.

[0117] Based on the same inventive concept, the embodiment of the present application also provides a communication device for implementing the communication method involved above. The implementation scheme for solving the problem provided by the device is similar to the implementation scheme recorded in the above method, so the specific limitations in one or more communication device embodiments provided below can refer to the limitations on the communication method above, and will not be repeated here.

[0118] In an exemplary embodiment, Fig.10 As shown, a communication device 300 is provided, including: a transceiver module 301 and a processing module 302, wherein:

[0119] The transceiver module 301 is used to obtain the location information of the first network device and the second network device.

[0120] The processing module 302 is used to determine the first area and the second area based on the location information; wherein the first area is the overlapping area of ​​the area covered by the signal sent by the first network device and the area covered by the signal sent by the second network device, and the angle between the line between the first network device and the first area and the movement direction of the first network device is greater than or equal to 90 degrees; the second area is the area covered by the signal sent by the first network device that does not overlap with the first area; the first field in the first message corresponding to the first area is configured as a first identifier, and the first field in the first message corresponding to the second area is configured as a second identifier; wherein the first identifier is used to indicate that the terminal device is prohibited from accessing the first network device, and the second identifier is used to indicate that the terminal device is allowed to access the first network device.

[0121] In an exemplary embodiment, the first message is a master information block (MIB), the first field is a cell access control field (cellBarred), the first identifier is barred, and the second identifier is notBarred; or,

[0122] The first message is a system information block 1 (SIB1), the first field is a cell access control field (cellBarredNTN) for a non-terrestrial network (NTN), the first identifier is barred, and the second identifier is notBarred.

[0123] In an exemplary embodiment, the first message is other system information (OSI), and the first field is used to indicate whether the terminal device is allowed to access the first network device.

[0124] Based on the same inventive concept, the embodiment of the present application also provides a communication device for implementing the communication method involved above. The implementation scheme for solving the problem provided by the device is similar to the implementation scheme recorded in the above method, so the specific limitations in one or more communication device embodiments provided below can refer to the limitations on the communication method above, and will not be repeated here.

[0125] In an exemplary embodiment, Fig.11 As shown, a communication device 400 is provided, including: a transceiver module 401, a processing module 402, wherein:

[0126] The transceiver module 401 is used to obtain a first message corresponding to a first area sent by a first network device when the terminal device is in an idle state and located in a first area.

[0127] Processing module 402 is used to prohibit access to the first network device in response to the first field in the first message corresponding to the first area being configured as a first identifier; wherein the first area is an overlapping area of ​​an area covered by a signal sent by the first network device and an area covered by a signal sent by the second network device, and an angle between a line between the first network device and the first area and a movement direction of the first network device is greater than or equal to 90 degrees.

[0128] In an exemplary embodiment, the first message is a system information block 1 (SIB1), the first field is a cell access control field (cellBarredNTN) for a non-terrestrial network (NTN), and the first identifier is barred.

[0129] In an exemplary embodiment, the transceiver module 401 is further used for:

[0130] When the terminal device is in an idle state and is located in the second area, a first message corresponding to the second area sent by the first network device is obtained.

[0131] The processing module 402 is further used for:

[0132] In response to the first field in the first message corresponding to the second area being configured as a second identifier, the first network device is accessed; the second identifier is notBarred; the second area is an area covered by the signal sent by the first network device that does not overlap with the first area.

[0133] In an exemplary embodiment, the transceiver module 401 is further used for:

[0134] Acquire a first message sent by a first network device;

[0135] The processing module 402 is further used for:

[0136] When the terminal device is in a connected state and is located in the first area, ignoring the first identifier in the first message and maintaining the connection with the first network device;

[0137] When the terminal device is in a connected state and is located in the second area, in response to the first field in the first message being configured as the second identifier, the connection with the first network device is maintained.

[0138] In an exemplary embodiment, the first message is a master information block (MIB), the first field is a cell access control field (cellBarred), and the first identifier is barred; or,

[0139] The first message is other system information (OSI), and the first field is used to indicate whether the terminal device is allowed to access the first network device.

[0140] In an exemplary embodiment, the transceiver module 401 is further used for:

[0141] When the terminal device is in an idle state and located in the second area, a first message and a second message corresponding to the second area sent by the first network device are obtained.

[0142] The processing module 402 is further used for:

[0143] In response to the first field in the first message corresponding to the second area being configured as the second identifier, and the second field in the second message corresponding to the second area being configured as the second identifier, accessing the first network device; the second identifier is notBarred.

[0144] In an exemplary embodiment, the transceiver module 401 is further used for:

[0145] A first message and a second message sent by a first network device are obtained.

[0146] The processing module 402 is further used for:

[0147] When the terminal device is in a connected state, ignore the first field in the first message, and in response to the second field in the second message being configured as the second identifier, maintain the connection with the first network device; or, in response to the second field in the second message being configured as the first identifier, disconnect the connection with the first network device.

[0148] Each module in the above communication device can be implemented in whole or in part by software, hardware or a combination thereof. Each module can be embedded in or independent of a processor in a computer device in the form of hardware, or can be stored in a memory in a computer device in the form of software, so that the processor can call and execute operations corresponding to each module.

[0149] In an exemplary embodiment, a computer device is provided. The computer device may be a terminal, and its internal structure diagram may be as shown in FIG. Fig.12As shown. The computer device includes a processor, a memory, an input / output interface, a communication interface, a display unit and an input device. The processor, the memory and the input / output interface are connected through a system bus, and the communication interface, the display unit and the input device are connected to the system bus through the input / output interface. The processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The input / output interface of the computer device is used to exchange information between the processor and an external device. The communication interface of the computer device is used to communicate with an external terminal device in a wired or wireless manner, and the wireless manner can be implemented through WIFI, a mobile cellular network, near field communication (NFC) or other technologies. When the computer program is executed by the processor, a communication method is implemented. The display unit of the computer device is used to form a visually visible picture, which can be a display screen, a projection device or a virtual reality imaging device. The display screen can be a liquid crystal display screen or an electronic ink display screen, and the input device of the computer device can be a touch layer covering the display screen, or a button, trackball or touchpad set on the computer device shell, or an external keyboard, touchpad or mouse.

[0150] Those skilled in the art will understand that Fig.12 The structure shown in the figure is only a block diagram of a part of the structure related to the solution of the present application, and does not constitute a limitation on the computer device to which the solution of the present application is applied. The specific computer device may include more or fewer components than those shown in the figure, or combine certain components, or have a different arrangement of components.

[0151] In an exemplary embodiment, a computer device is provided, including a memory and a processor, wherein a computer program is stored in the memory, and the processor implements the steps in the above-mentioned method embodiments when executing the computer program.

[0152] In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, the steps in the above-mentioned method embodiments are implemented.

[0153] In one embodiment, a computer program product is provided, including a computer program, which implements the steps in the above method embodiments when executed by a processor.

[0154] In one embodiment, a chip system is provided, comprising: a processor, configured to call and run a computer program from a memory, so that a communication device equipped with the chip system executes the above methods.

[0155] A person of ordinary skill in the art can understand that all or part of the processes in the above-mentioned embodiment method can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to the memory, database or other medium used in the embodiments provided in the present application can include at least one of non-volatile memory and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. As an illustration and not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM). The database involved in each embodiment provided in this application may include at least one of a relational database and a non-relational database. Non-relational databases may include distributed databases based on blockchains, etc., but are not limited to this. The processor involved in each embodiment provided in this application may be a general-purpose processor, a central processing unit, a graphics processor, a digital signal processor, a programmable logic device, a data processing logic device based on quantum computing, an artificial intelligence (AI) processor, etc., but are not limited to this.

[0156] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this application.

[0157] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

Claims

1. A communication method, characterized in that: Applied to a first network device, the method comprises: Acquire location information of the first network device and the second network device, and determine a first area and a second area based on the location information; wherein the first area is an overlapping area of ​​an area covered by a signal sent by the first network device and an overlapping area of ​​an area covered by a signal sent by the second network device, and an angle between a line between the first network device and the first area and a movement direction of the first network device is greater than or equal to 90 degrees; and the second area is an area in the area covered by the signal sent by the first network device that does not overlap with the first area; The first field in the first message corresponding to the first area is configured as a first identifier, and the first field in the first message corresponding to the second area is configured as a second identifier; wherein the first identifier is used to indicate that the terminal device is prohibited from accessing the first network device, and the second identifier is used to indicate that the terminal device is allowed to access the first network device.

2. The method according to claim 1, characterized in that The first message is a main information block (MIB), the first field is a cell access control field (cellBarred), the first identifier is barred, and the second identifier is notBarred; or, The first message is a system information block 1 (SIB1), the first field is a cell access control field (cellBarredNTN) for a non-terrestrial network (NTN), the first identifier is barred, and the second identifier is notBarred.

3. The method according to claim 1, characterized in that The first message is other system information (OSI), and the first field is used to indicate whether the terminal device is allowed to access the first network device.

4. A communication method, characterized in that: Applied to a terminal device, the method comprises: When the terminal device is in an idle state and located in a first area, obtaining a first message corresponding to the first area sent by a first network device; In response to the first field in the first message corresponding to the first area being configured as a first identifier, access to the first network device is prohibited; wherein the first area is an overlapping area covered by an area covered by a signal sent by the first network device and an overlapping area covered by a signal sent by the second network device, and an angle between a line between the first network device and the first area and a movement direction of the first network device is greater than or equal to 90 degrees.

5. The method according to claim 4, characterized in that The first message is a system information block 1 (SIB1), the first field is a cell access control field (cellBarredNTN) for a non-terrestrial network (NTN), and the first identifier is barred.

6. The method according to claim 5, characterized in that The method further comprises: When the terminal device is in an idle state and is located in the second area, obtaining a first message corresponding to the second area sent by the first network device; In response to the first field in the first message corresponding to the second area being configured as a second identifier, accessing the first network device; the second identifier is notBarred; the second area is an area covered by the signal sent by the first network device that does not overlap with the first area.

7. The method according to claim 5, characterized in that The method further comprises: Acquire a first message sent by a first network device; When the terminal device is in a connected state and is located in the first area, ignoring the first identifier in the first message and maintaining the connection with the first network device; When the terminal device is in a connected state and is located in the second area, in response to the first field in the first message being configured as a second identifier, the connection with the first network device is maintained.

8. The method according to claim 4, characterized in that The first message is a main information block (MIB), the first field is a cell access control field (cellBarred), and the first identifier is barred; or, The first message is other system information (OSI), and the first field is used to indicate whether the terminal device is allowed to access the first network device.

9. The method according to claim 8, characterized in that The method further comprises: When the terminal device is in an idle state and is located in the second area, obtaining a first message and a second message corresponding to the second area sent by the first network device; In response to the first field in the first message corresponding to the second area being configured as the second identifier, and the second field in the second message corresponding to the second area being configured as the second identifier, accessing the first network device; the second identifier is notBarred.

10. The method according to claim 8, characterized in that The method further comprises: Acquire a first message and a second message sent by a first network device; When the terminal device is in a connected state, the first field in the first message is ignored, and in response to the second field in the second message being configured as the second identifier, the connection with the first network device is maintained; or, in response to the second field in the second message being configured as the first identifier, the connection with the first network device is disconnected.

11. A communication device, characterized in that: The device comprises: A transceiver module, used to obtain location information of the first network device and the second network device; A processing module, used to determine a first area and a second area based on the location information; wherein the first area is an overlapping area of ​​an area covered by a signal sent by the first network device and an overlapping area covered by a signal sent by the second network device, and the angle between a line between the first network device and the first area and a movement direction of the first network device is greater than or equal to 90 degrees; the second area is an area that does not overlap with the first area in the area covered by the signal sent by the first network device; the first field in the first message corresponding to the first area is configured as a first identifier, and the first field in the first message corresponding to the second area is configured as a second identifier; wherein the first identifier is used to indicate that a terminal device is prohibited from accessing the first network device, and the second identifier is used to indicate that a terminal device is allowed to access the first network device.

12. A communication device, characterized in that: The device comprises: A transceiver module, configured to obtain, when the terminal device is in an idle state and located in a first area, a first message corresponding to the first area sent by a first network device; A processing module, used to prohibit access to the first network device in response to the first field in the first message corresponding to the first area being configured as a first identifier; wherein the first area is an overlapping area covered by an area covered by a signal sent by the first network device and an overlapping area covered by a signal sent by a second network device, and an angle between a line between the first network device and the first area and a movement direction of the first network device is greater than or equal to 90 degrees.

13. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the computer program implements the steps of any one of the methods 1 to 3 or the steps of any one of the methods 4 to 10.

14. A computer program product comprising a computer program, characterized in that When the computer program is executed by a processor, the computer program implements the steps of any one of the methods 1 to 3 or the steps of any one of the methods 4 to 10.

15. A chip system, characterized in that: include: A processor, used to call and run a computer program from a memory so that a communication device equipped with the chip system executes a method as described in any one of claims 1 to 3; or a communication device equipped with the chip system executes a method as described in any one of claims 4 to 10.

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