NTN communication method and communication device

Abstract

Provided are an NTN communication method and a communication device, the NTN communication method comprising: a network device configures a first resource for sending an uplink alarm signal (a first signal) and a second resource for receiving a downlink alarm signal (a second signal) to a terminal device in an inactive state, therefore, the terminal device sends the first signal based on the signal quality and can receive the second signal sent by the network device. When the terminal equipment is in the inactive state, the alarm signal can be transmitted to the network equipment through the first resource and the second resource, successful reception of the paging message is ensured based on the indication of the alarm signal, and direct communication between the terminal equipment and the network equipment is realized.

Description

Technical Field

[0001] The present application relates to the field of communication technology, and more specifically, to a method and a communication device for non-terrestrial networks (NTN) communication. Background Art

[0002] Satellite networks are a hot topic of research in the world today. Satellite communication technology has become increasingly mature. For example, non-terrestrial networks (NTN) use radio frequency networks or network segments on satellites to achieve communication, which can provide a wider coverage area, and satellite base stations are not easily damaged by natural disasters or external forces.

[0003] In the NTN network, the round-trip transmission delay is large and the path loss is large. For the direct connection requirements of terminal devices, if the current signal of the terminal device is deteriorated, for example, it is in an obstructed state, even using a large number of ground coverage repetitions and the lowest modulation and coding methods cannot meet the decoding requirements, and the terminal device and satellite communication are difficult.

[0004] In the NTN scenario, a communication method is urgently needed to enable direct communication between the terminal device and the satellite when the signal status is poor. Summary of the invention

[0005] The present application provides a NTN communication method and a communication device to ensure that a terminal device can achieve direct communication with a satellite even when the signal status is poor.

[0006] In a first aspect, a method for non-terrestrial network (NTN) communication is provided. The method may be executed by a network device, or may be executed by a chip or circuit configured in the network device, and the present application does not limit this.

[0007] The method includes: determining at least one first resource and at least one second resource, each of the at least one first resource is used for the terminal device to send at least one first signal according to the signal quality of the downlink signal, and each of the at least one second resource is used for the terminal device to receive at least one second signal, each first resource includes an uplink scheduled time-frequency resource, and each second resource includes a downlink scheduled time-frequency resource; sending the at least one first resource and the at least one second resource before the terminal device enters an inactive state.

[0008] Based on the above technical solution, the network device configures a first resource for sending an uplink alarm signal (first signal) and a second resource for receiving a downlink alarm signal (second signal) to a terminal device in an inactive state, so that the terminal device can send the first signal based on the signal quality and can receive the second signal sent by the network device. It can be understood that when the terminal device is in an inactive state, it can transmit an alarm signal to the network device through the first resource and the second resource, and ensure successful reception of the paging message based on the indication of the alarm signal, thereby realizing direct communication between the terminal device and the network device.

[0009] In combination with the first aspect, in some implementations of the first aspect, the method further includes: sending the at least one second signal before sending the paging message.

[0010] In this technical solution, the terminal device sends an uplink alarm signal based on the signal quality. After receiving the uplink alarm signal, the network device sends a downlink alarm signal before sending a paging message. The signal quality is adjusted based on the downlink alarm signal received by the terminal device to ensure that the terminal device can successfully receive the paging message and realize direct communication.

[0011] In combination with the first aspect, in certain implementations of the first aspect, all first resources in at least one first resource or all second resources in at least one second resource have a mapping relationship with part or all of at least one third resource, and the at least one third resource is a downlink synchronization resource or a random access resource configured by the network device.

[0012] In this technical solution, the first resource and the second resource configured by the network device can be configured based on the downlink synchronization resource or the random access resource, and the design method in the existing standard can be reused as much as possible, which not only increases the flexibility of the resource configuration but also reduces the implementation complexity.

[0013] In combination with the first aspect, in certain implementations of the first aspect, all first resources in at least one first resource or all second resources in at least one second resource correspond one-to-one to part or all of the downlink synchronization signal blocks in at least one downlink synchronization signal block.

[0014] In this technical solution, the first resource and the second resource configured by the network device are associated with the downlink synchronization signal block. The resources configured by the network device can correspond one-to-one with all downlink synchronization signal blocks, or one-to-one with part of the synchronization signal blocks, that is, all downlink synchronization signal blocks configured by the network device have resource (first resource or second resource) mapping, or part of the downlink synchronization signal blocks configured by the network device have resource mapping. The flexibility of resource configuration is increased.

[0015] In combination with the first aspect, in certain implementations of the first aspect, the random access resources corresponding to some or all downlink synchronization signal blocks release their resources for transmitting the first resource or the second resource.

[0016] In this technical solution, for a downlink synchronization signal block with resource mapping, its corresponding random access resource releases its resources for mapping the first resource or the second resource.

[0017] In combination with the first aspect, in certain implementations of the first aspect, all first resources in the at least one first resource or all second resources in the at least one second resource correspond one-to-one to part or all of the random access resources in the at least one random access resource.

[0018] In this technical solution, the first resource and the second resource configured by the network device are associated with the random access resources. The resources configured by the network device can correspond one-to-one with all the random access resources or one-to-one with part of the random access resources, thereby increasing the flexibility of resource configuration.

[0019] In combination with the first aspect, in some implementations of the first aspect, each first resource of the at least one first resource or each second resource of the at least one second resource is offset from the corresponding random access resource by a value X in time and frequency position.

[0020] In this technical solution, the resources (first resources or second resources) configured by the network device correspond one-to-one to the random access resources, but they cannot overlap in time and frequency position, otherwise it may affect the transmission of the first resource or the second resource. Therefore, each first resource or second resource can have a certain offset X with the corresponding random access resource in time and frequency position, so as to ensure the transmission of the first resource or the second resource.

[0021] In combination with the first aspect, in certain implementations of the first aspect, the first resource is used to send the first signal when the terminal device determines that the signal quality of the downlink signal meets the first condition, and the first condition includes at least one of the following three items: the signal quality of the current cell and the signal quality of the neighboring cell simultaneously drop to the corresponding threshold or the amplitude of the simultaneous decrease reaches the corresponding threshold; the signal quality of the current cell and the signal quality of the neighboring cell simultaneously drop to the corresponding threshold within the first time period or the amplitude of the simultaneous decrease reaches the corresponding threshold; the signal quality of the current cell and the signal quality of the neighboring cell simultaneously drop to the corresponding threshold or the amplitude of the simultaneous decrease reaches the corresponding threshold when measured K times.

[0022] In this technical solution, the terminal device determines whether the signal quality meets the requirements for sending the first signal from different angles and conditions. The judgment conditions are more flexible and more complex, which can increase the accuracy of the judgment.

[0023] In combination with the first aspect, in some implementations of the first aspect, the method further includes: sending first indication information, where the first indication information is used to indicate that the second resource of the terminal device is activated.

[0024] In this technical solution, the network device sends a first indication message according to the reduction in transmission power, which is used to indicate that the second resource of the terminal device has been activated. Before sending a paging message, the network device can send at least one second signal to the terminal device, and the terminal device can receive the second signal based on the second resource.

[0025] In combination with the first aspect, in some implementations of the first aspect, the first indication information includes a first time period, and the first indication information indicates to the terminal device that the second resource is activated in the first time period.

[0026] In this technical solution, the network device can predict the movement trajectory and thus can predetermine the timing for reducing the transmission power. Therefore, the first indication information can specifically indicate the first time period during which the transmission power is reduced. The transmission power is reduced during this first time period, and the terminal device receives the second signal based on the second resource during this first time period.

[0027] In combination with the first aspect, in some implementations of the first aspect, the second resource is activated after receiving at least one first signal.

[0028] In this technical solution, after the terminal device sends at least one first signal, the network device receives the first signal and activates the second resource, that is, the network device can send the second signal on the second resource, avoiding unnecessary sending of downlink signals and reducing resource loss.

[0029] In combination with the first aspect, in some implementations of the first aspect, after the first resource and the second resource are activated, the terminal device does not receive the second signal within a second time period, and the second resource is deactivated.

[0030] In this technical solution, after the first resource and the second resource are activated, they are no longer used for other signaling transmissions, but are specifically used to transmit alarm signals. If it is found that the device has not received the alarm signal within a period of time, the second resource can be deactivated to avoid resource waste.

[0031] In combination with the first aspect, in some implementations of the first aspect, after the terminal device sends the first signal, the terminal device receives feedback information from the network device, and the first resource is deactivated.

[0032] In this technical solution, after the first resource and the second resource are activated, the terminal device sends a first signal based on the first resource, and then receives feedback information from the network device. Based on the feedback information, the terminal device can determine that the network device has received the first signal, and the subsequent first signal can be considered invalid, and there is no need to continue sending the first signal, thereby avoiding unnecessary signaling overhead.

[0033] In combination with the first aspect, in some implementations of the first aspect, after the network device sends the second signal and receives feedback information from the terminal device, the first resource and the second resource are deactivated.

[0034] In this technical solution, after the first resource and the second resource are activated, the network device receives feedback information from the terminal device after sending the second signal to the terminal device. Based on the feedback information, the network device can determine that the terminal device has received the second signal, and there is no need to continue transmitting the first signal and the second signal, and deactivate the first resource and the second resource, thereby avoiding unnecessary signaling overhead and saving resources.

[0035] In combination with the first aspect, in certain implementations of the first aspect, the method also includes: receiving second indication information, where the second indication information is determined by the terminal device based on the quality of the downlink signal; and determining to deactivate the first resource and the second resource based on the second indication information.

[0036] In this technical solution, the terminal device determines that when the signal quality of the current cell and the neighboring cell has recovered to a certain threshold based on the signal quality of the downlink signal and meets the requirements of direct communication, there is no need to use an alarm signal to instruct the terminal device to adjust the signal quality. The first resource and the second resource can be deactivated, thereby reducing unnecessary transmission of alarm signals and reducing resource reservation.

[0037] In combination with the first aspect, in some implementations of the first aspect, the first signal or the second signal is associated with an identifier of the terminal device.

[0038] In this technical solution, each of the at least one first resource configured by the network device is used for multiple UEs to send uplink alarm signals according to the signal quality of the downlink signal, and each of the at least one second resource configured by the network device is used for multiple terminal devices to receive downlink alarm signals. Different UEs send different uplink alarm signals, and the network device sends different downlink alarm signals to different UEs. Therefore, the UE's identity ID corresponds to the corresponding alarm signal one-to-one. After the network device receives the first signal associated with the terminal device identifier based on the first resource, it can send the second signal associated with the terminal device identifier on the corresponding second resource. The terminal device receives the second signal of the associated identifier and determines that the network device has successfully received the alarm signal of the terminal device.

[0039] In a second aspect, a method for non-terrestrial network NTN communication is provided. The method can be executed by a terminal device, or can also be executed by a chip or circuit configured in the terminal device, and the present application does not limit this.

[0040] The method includes: receiving at least one first resource and at least one second resource before entering an inactive state, each of the at least one first resource being used by a terminal device to send at least one first signal according to the signal quality of a downlink signal, and each of the at least one second resource being used by a terminal device to receive at least one second signal, each of the first resource comprising an uplink scheduled time-frequency resource, and each of the second resource comprising a downlink scheduled time-frequency resource; receiving the second signal before receiving a paging message.

[0041] Based on the above technical solution, before the terminal device enters the inactive state, it is configured with a first resource for sending an uplink alarm signal (first signal) and a second resource for receiving a downlink alarm signal (second signal), so that the terminal device can send the first signal based on the signal quality and can receive the second signal sent by the network device. It can be understood that when the terminal is in an inactive state, the alarm signal can be transmitted to the network device through the first resource and the second resource, and the paging message can be successfully received based on the indication of the alarm signal, so as to realize direct communication between the terminal device and the network device.

[0042] In combination with the second aspect, in some implementations of the second aspect, the method further includes: sending at least one first signal according to the signal quality of the downlink signal.

[0043] In this technical solution, the terminal device sends an uplink alarm signal based on the signal quality. After receiving the uplink alarm signal, the network device sends a downlink alarm signal before sending a paging message. The signal quality is adjusted based on the downlink alarm signal received by the terminal device to ensure that the terminal device can successfully receive the paging message and realize direct communication.

[0044] In combination with the second aspect, in certain implementations of the second aspect, all first resources in at least one first resource or all second resources in at least one second resource have a mapping relationship with part or all of at least one third resource, and the at least one third resource is a downlink synchronization resource or a random access resource configured by the network device.

[0045] In this technical solution, the first resource and the second resource configured by the network device can be configured based on the downlink synchronization resource or the random access resource, and the design method in the existing standard can be reused as much as possible, which not only increases the flexibility of the resource configuration but also reduces the implementation complexity.

[0046] In combination with the second aspect, in certain implementations of the second aspect, all first resources in at least one first resource or all second resources in at least one second resource correspond one-to-one to part or all of the downlink synchronization signal blocks in at least one downlink synchronization signal block.

[0047] In this technical solution, the first resource and the second resource configured by the network device are associated with the downlink synchronization signal block. The resources configured by the network device can correspond one-to-one with all downlink synchronization signal blocks, or one-to-one with part of the synchronization signal blocks, that is, all downlink synchronization signal blocks configured by the network device have resource (first resource or second resource) mapping, or part of the downlink synchronization signal blocks configured by the network device have resource mapping. The flexibility of resource configuration is increased.

[0048] In combination with the second aspect, in certain implementations of the second aspect, the random access resources corresponding to some or all downlink synchronization signal blocks release their resources for transmitting the first resource or the second resource.

[0049] In this technical solution, for a downlink synchronization signal block with resource mapping, its corresponding random access resource releases its resources for mapping the first resource or the second resource.

[0050] In combination with the second aspect, in certain implementations of the second aspect, all first resources in the at least one first resource or all second resources in the at least one second resource correspond one-to-one to part or all of the random access resources in the at least one random access resource.

[0051] In this technical solution, the first resource and the second resource configured by the network device are associated with the random access resources. The resources configured by the network device can correspond one-to-one with all the random access resources or one-to-one with part of the random access resources, thereby increasing the flexibility of resource configuration.

[0052] In combination with the second aspect, in some implementations of the second aspect, each first resource of the at least one first resource or each second resource of the at least one second resource is offset from the corresponding random access resource by a value X in time and frequency position.

[0053] In this technical solution, the resources (first resources or second resources) configured by the network device correspond one-to-one to the random access resources, but they cannot overlap in time and frequency position, otherwise it may affect the transmission of the first resource or the second resource. Therefore, each first resource or second resource can have a certain offset X with the corresponding random access resource in time and frequency position, so as to ensure the transmission of the first resource or the second resource.

[0054] In combination with the second aspect, in certain implementations of the second aspect, the method also includes: sending the first signal when it is determined that the signal quality of the downlink signal satisfies a first condition, and the first condition includes at least one of the following three items: the signal quality of the current cell and the signal quality of the neighboring cell simultaneously drop to the corresponding threshold or the amplitude of the simultaneous decrease reaches the corresponding threshold; the signal quality of the current cell and the signal quality of the neighboring cell simultaneously drop to the corresponding threshold within the first time period or the amplitude of the simultaneous decrease reaches the corresponding threshold; the signal quality of the current cell and the signal quality of the neighboring cell both drop to the corresponding threshold at the same time or the amplitude of the simultaneous decrease reaches the corresponding threshold when measured K times.

[0055] In this technical solution, the terminal device determines whether the signal quality meets the requirements for sending the first signal from different angles and conditions. The judgment conditions are more flexible and more complex, which can increase the accuracy of the judgment.

[0056] In combination with the second aspect, in some implementations of the second aspect, the method further includes: receiving first indication information; and determining, according to the first indication information, that the second resource is activated.

[0057] In this technical solution, the network device sends a first indication message according to a decrease in transmission power, the terminal device receives the first indication message, and determines that the second resource has been activated according to the first indication message. Before sending a paging message, the network device may send at least one second signal to the terminal device, and the terminal device may receive the second signal based on the second resource.

[0058] In combination with the second aspect, in some implementations of the second aspect, the first indication information includes a first time period, and the first indication information indicates to the terminal device that the second resource is activated in the first time period.

[0059] In this technical solution, the network device can predict the movement trajectory and thus can predetermine the timing for reducing the transmission power. Therefore, the first indication information can specifically indicate the first time period during which the transmission power is reduced. The transmission power is reduced during this first time period, and the terminal device receives the second signal based on the second resource during this first time period.

[0060] In combination with the second aspect, in some implementations of the second aspect, the method further includes: the second resource is activated after sending at least one first signal.

[0061] In this technical solution, after the terminal device sends at least one first signal, the network device receives the first signal and activates the second resource, that is, the network device can send the second signal on the second resource, avoiding unnecessary sending of downlink signals and reducing resource loss.

[0062] In combination with the second aspect, in some implementations of the second aspect, after the first resource and the second resource are activated, the terminal device does not receive the second signal within a second time period, and the second resource is deactivated.

[0063] In this technical solution, after the first resource and the second resource are activated, they are no longer used for other signaling transmissions, but are specifically used to transmit alarm signals. If it is found that the device has not received the alarm signal within a period of time, the second resource can be deactivated to avoid resource waste.

[0064] In combination with the second aspect, in some implementations of the second aspect, after the terminal device sends the first signal, the terminal device receives feedback information from the network device, and the first resource is deactivated.

[0065] In this technical solution, after the first resource and the second resource are activated, the terminal device sends a first signal based on the first resource, and then receives feedback information from the network device. Based on the feedback information, the terminal device can determine that the network device has received the first signal, and the subsequent first signal can be considered invalid, and there is no need to continue sending the first signal, thereby avoiding unnecessary signaling overhead.

[0066] In combination with the second aspect, in some implementations of the second aspect, after the network device sends the second signal and receives feedback information from the terminal device, the first resource and the second resource are deactivated.

[0067] In this technical solution, after the first resource and the second resource are activated, the network device receives feedback information from the terminal device after sending the second signal to the terminal device. Based on the feedback information, the network device can determine that the terminal device has received the second signal, and there is no need to continue transmitting the first signal and the second signal, and deactivate the first resource and the second resource, thereby avoiding unnecessary signaling overhead and saving resources.

[0068] In combination with the second aspect, in some implementations of the second aspect, the method further includes: sending second indication information according to the quality of the downlink signal, wherein the second indication information is used to indicate deactivation of the first resource and the second resource.

[0069] In this technical solution, the terminal device determines that when the signal quality of the current cell and the neighboring cell has recovered to a certain threshold based on the signal quality of the downlink signal and meets the requirements of direct communication, there is no need to use an alarm signal to instruct the terminal device to adjust the signal quality. The first resource and the second resource can be deactivated, thereby reducing unnecessary transmission of alarm signals and reducing resource reservation.

[0070] In combination with the second aspect, in some implementations of the second aspect, the first signal or the second signal is associated with an identifier of the terminal device.

[0071] In this technical solution, each of the at least one first resource configured by the network device is used for multiple UEs to send uplink alarm signals according to the signal quality of the downlink signal, and each of the at least one second resource configured by the network device is used for multiple terminal devices to receive downlink alarm signals. Different UEs send different uplink alarm signals, and the network device sends different downlink alarm signals to different UEs. Therefore, the UE's identity ID corresponds to the corresponding alarm signal one-to-one. After the network device receives the first signal associated with the terminal device identifier based on the first resource, it can send the second signal associated with the terminal device identifier on the corresponding second resource. The terminal device receives the second signal of the associated identifier and determines that the network device has successfully received the alarm signal of the terminal device.

[0072] In a third aspect, a communication device is provided. The device may be a network device, or may be a chip or circuit configured in the network device, which is not limited in the present application.

[0073] The device includes: a processing unit, used to determine at least one first resource and at least one second resource, each of the at least one first resource is used for the terminal device to send at least one first signal according to the signal quality of the downlink signal, and each of the at least one second resource is used for the terminal device to receive at least one second signal, each first resource includes an uplink scheduled time-frequency resource, and each second resource includes a downlink scheduled time-frequency resource; a transceiver unit, used to send the at least one first resource and the at least one second resource before the terminal device enters an inactive state.

[0074] Based on the above technical solution, the network device configures the first resource for sending an uplink alarm signal (first signal) and the second resource for receiving a downlink alarm signal (second signal) to the terminal device in an inactive state, so that the terminal device can send the first signal based on the signal quality and can receive the second signal sent by the network device. It can be understood that when the terminal is in an inactive state, the alarm signal can be transmitted to the network device through the first resource and the second resource, and the paging message can be successfully received based on the indication of the alarm signal, so as to realize direct communication between the terminal device and the network device.

[0075] In combination with the third aspect, in certain implementations of the third aspect, the transceiver unit is further configured to send the at least one second signal before sending the paging message.

[0076] In this technical solution, the terminal device sends an uplink alarm signal based on the signal quality. After receiving the uplink alarm signal, the network device sends a downlink alarm signal before sending a paging message. The signal quality is adjusted based on the downlink alarm signal received by the terminal device to ensure that the terminal device can successfully receive the paging message and realize direct communication.

[0077] In combination with the third aspect, in certain implementations of the third aspect, all first resources in at least one first resource or all second resources in at least one second resource have a mapping relationship with part or all of at least one third resource, and the at least one third resource is a downlink synchronization resource or a random access resource configured by the network device.

[0078] In this technical solution, the first resource and the second resource configured by the network device can be configured based on the downlink synchronization resource or the random access resource, and the design method in the existing standard can be reused as much as possible, which not only increases the flexibility of the resource configuration but also reduces the implementation complexity.

[0079] In combination with the third aspect, in certain implementations of the third aspect, all first resources in at least one first resource or all second resources in at least one second resource correspond one-to-one to part or all of the downlink synchronization signal blocks in at least one downlink synchronization signal block.

[0080] In this technical solution, the first resource and the second resource configured by the network device are associated with the downlink synchronization signal block. The resources configured by the network device can correspond one-to-one with all downlink synchronization signal blocks, or one-to-one with part of the synchronization signal blocks, that is, all downlink synchronization signal blocks configured by the network device have resource (first resource or second resource) mapping, or part of the downlink synchronization signal blocks configured by the network device have resource mapping. The flexibility of resource configuration is increased.

[0081] In combination with the third aspect, in certain implementations of the third aspect, the random access resources corresponding to some or all downlink synchronization signal blocks release their resources for transmitting the first resource or the second resource.

[0082] In this technical solution, for a downlink synchronization signal block with resource mapping, its corresponding random access resource releases its resources for mapping the first resource or the second resource.

[0083] In combination with the third aspect, in certain implementations of the third aspect, all first resources in the at least one first resource or all second resources in the at least one second resource correspond one-to-one to part or all of the random access resources in the at least one random access resource.

[0084] In this technical solution, the first resource and the second resource configured by the network device are associated with the random access resources. The resources configured by the network device can correspond one-to-one with all the random access resources or one-to-one with part of the random access resources, thereby increasing the flexibility of resource configuration.

[0085] In combination with the third aspect, in some implementations of the third aspect, each first resource of the at least one first resource or each second resource of the at least one second resource is offset from the corresponding random access resource by a value X in time and frequency position.

[0086] In this technical solution, the resources (first resources or second resources) configured by the network device correspond one-to-one to the random access resources, but they cannot overlap in time and frequency position, otherwise it may affect the transmission of the first resource or the second resource. Therefore, each first resource or second resource can have a certain offset X with the corresponding random access resource in time and frequency position, so as to ensure the transmission of the first resource or the second resource.

[0087] In combination with the third aspect, in certain implementations of the third aspect, the first resource is used to send the first signal when the terminal device determines that the signal quality of the downlink signal meets the first condition, and the first condition includes at least one of the following three items: the signal quality of the current cell and the signal quality of the neighboring cell simultaneously drop to the corresponding threshold or the amplitude of the simultaneous decrease reaches the corresponding threshold; the signal quality of the current cell and the signal quality of the neighboring cell simultaneously drop to the corresponding threshold within the first time period or the amplitude of the simultaneous decrease reaches the corresponding threshold; the signal quality of the current cell and the signal quality of the neighboring cell simultaneously drop to the corresponding threshold or the amplitude of the simultaneous decrease reaches the corresponding threshold when measured K times.

[0088] In this technical solution, the terminal device determines whether the signal quality meets the requirements for sending the first signal from different angles and conditions. The judgment conditions are more flexible and more complex, which can increase the accuracy of the judgment.

[0089] In combination with the third aspect, in some implementations of the third aspect, the transceiver unit is further used to send first indication information, where the first indication information is used to indicate that the second resource of the terminal device is activated.

[0090] In this technical solution, the network device sends a first indication message according to the reduction in transmission power, which is used to indicate that the second resource of the terminal device has been activated. Before sending a paging message, the network device can send at least one second signal to the terminal device, and the terminal device can receive the second signal based on the second resource.

[0091] In combination with the third aspect, in certain implementations of the third aspect, the first indication information includes a first time period, and the first indication information indicates to the terminal device that the second resource is activated in the first time period.

[0092] In this technical solution, the network device can predict the movement trajectory and thus can predetermine the timing for reducing the transmission power. Therefore, the first indication information can specifically indicate the first time period during which the transmission power is reduced. The transmission power is reduced during this first time period, and the terminal device receives the second signal based on the second resource during this first time period.

[0093] In combination with the third aspect, in some implementations of the third aspect, the transceiver unit activates the second resource after receiving at least one first signal.

[0094] In this technical solution, after the terminal device sends at least one first signal, the transceiver unit receives the first signal and activates the second resource, that is, the network device can send the second signal on the second resource, avoiding unnecessary sending of downlink signals and reducing resource loss.

[0095] In combination with the third aspect, in certain implementations of the third aspect, after the first resource and the second resource are activated, the terminal device does not receive the second signal within a second time period, and the second resource is deactivated.

[0096] In this technical solution, after the first resource and the second resource are activated, they are no longer used for other signaling transmissions, but are specifically used to transmit alarm signals. If it is found that the device has not received the alarm signal within a period of time, the second resource can be deactivated to avoid resource waste.

[0097] In combination with the third aspect, in certain implementations of the third aspect, after the transceiver unit sends the first signal, the terminal device receives feedback information from the network device, and the first resource is deactivated.

[0098] In this technical solution, after the first resource and the second resource are activated, the terminal device sends a first signal based on the first resource, and then receives feedback information from the network device. Based on the feedback information, the terminal device can determine that the network device has received the first signal, and the subsequent first signal can be considered invalid, and there is no need to continue sending the first signal, thereby avoiding unnecessary signaling overhead.

[0099] In combination with the third aspect, in certain implementations of the third aspect, after the network device sends the second signal and receives feedback information from the terminal device, the first resource and the second resource are deactivated.

[0100] In this technical solution, after the first resource and the second resource are activated, the network device receives feedback information from the terminal device after sending the second signal to the terminal device. Based on the feedback information, the network device can determine that the terminal device has received the second signal, and there is no need to continue transmitting the first signal and the second signal, and deactivate the first resource and the second resource, thereby avoiding unnecessary signaling overhead and saving resources.

[0101] In combination with the third aspect, in certain implementations of the third aspect, the transceiver unit is also used to receive second indication information, where the second indication information is determined by the terminal device based on the quality of the downlink signal; the processing unit is also used to determine the deactivation of the first resource and the second resource based on the second indication information.

[0102] In this technical solution, the terminal device determines that when the signal quality of the current cell and the neighboring cell has recovered to a certain threshold based on the signal quality of the downlink signal and meets the requirements of direct communication, there is no need to use an alarm signal to instruct the terminal device to adjust the signal quality. The first resource and the second resource can be deactivated, thereby reducing unnecessary transmission of alarm signals and reducing resource reservation.

[0103] In combination with the third aspect, in some implementations of the third aspect, the first signal or the second signal is associated with an identifier of the terminal device.

[0104] In this technical solution, each of the at least one first resource configured by the network device is used for multiple UEs to send uplink alarm signals according to the signal quality of the downlink signal, and each of the at least one second resource configured by the network device is used for multiple terminal devices to receive downlink alarm signals. Different UEs send different uplink alarm signals, and the network device sends different downlink alarm signals to different UEs. Therefore, the UE's identity ID corresponds to the corresponding alarm signal one-to-one. After the network device receives the first signal associated with the terminal device identifier based on the first resource, it can send the second signal associated with the terminal device identifier on the corresponding second resource. The terminal device receives the second signal of the associated identifier and determines that the network device has successfully received the alarm signal of the terminal device.

[0105] In a fourth aspect, a communication device is provided, which may be a terminal device, or may be a chip or circuit configured in the terminal device, and the present application does not limit this.

[0106] The device includes: a transceiver unit, used to receive at least one first resource and at least one second resource before entering an inactive state, each of the at least one first resource is used for the terminal device to send at least one first signal according to the signal quality of the downlink signal, and each of the at least one second resource is used for the terminal device to receive at least one second signal, each of the first resource includes an uplink scheduled time-frequency resource, and each of the second resource includes a downlink scheduled time-frequency resource; the transceiver unit is also used to receive the second signal before receiving a paging message.

[0107] Based on the above technical solution, before the terminal device enters the inactive state, it is configured with a first resource for sending an uplink alarm signal (first signal) and a second resource for receiving a downlink alarm signal (second signal), so that the terminal device can send the first signal based on the signal quality and can receive the second signal sent by the network device. It can be understood that when the terminal is in an inactive state, the alarm signal can be transmitted to the network device through the first resource and the second resource, and the paging message can be successfully received based on the indication of the alarm signal, so as to realize direct communication between the terminal device and the network device.

[0108] In combination with the fourth aspect, in some implementations of the fourth aspect, the device also includes a processing unit, configured to send at least one of the first signals according to a signal quality of a downlink signal.

[0109] In this technical solution, the terminal device sends an uplink alarm signal based on the signal quality. After receiving the uplink alarm signal, the network device sends a downlink alarm signal before sending a paging message. The signal quality is adjusted based on the downlink alarm signal received by the terminal device to ensure that the terminal device can successfully receive the paging message and realize direct communication.

[0110] In combination with the fourth aspect, in certain implementations of the fourth aspect, all first resources in at least one first resource or all second resources in at least one second resource have a mapping relationship with part or all of at least one third resource, and the at least one third resource is a downlink synchronization resource or a random access resource configured by the network device.

[0111] In this technical solution, the first resource and the second resource configured by the network device can be configured based on the downlink synchronization resource or the random access resource, and the design method in the existing standard can be reused as much as possible, which not only increases the flexibility of the resource configuration but also reduces the implementation complexity.

[0112] In combination with the fourth aspect, in certain implementations of the fourth aspect, all first resources in at least one first resource or all second resources in at least one second resource correspond one-to-one to part or all of the downlink synchronization signal blocks in at least one downlink synchronization signal block.

[0113] In this technical solution, the first resource and the second resource configured by the network device are associated with the downlink synchronization signal block. The resources configured by the network device can correspond one-to-one with all downlink synchronization signal blocks, or one-to-one with part of the synchronization signal blocks, that is, all downlink synchronization signal blocks configured by the network device have resource (first resource or second resource) mapping, or part of the downlink synchronization signal blocks configured by the network device have resource mapping. The flexibility of resource configuration is increased.

[0114] In combination with the fourth aspect, in certain implementations of the fourth aspect, the random access resources corresponding to some or all downlink synchronization signal blocks release their resources for transmitting the first resource or the second resource.

[0115] In this technical solution, for a downlink synchronization signal block with resource mapping, its corresponding random access resource releases its resources for mapping the first resource or the second resource.

[0116] In combination with the fourth aspect, in certain implementations of the fourth aspect, all first resources in the at least one first resource or all second resources in the at least one second resource correspond one-to-one to part or all of the random access resources in the at least one random access resource.

[0117] In this technical solution, the first resource and the second resource configured by the network device are associated with the random access resources. The resources configured by the network device can correspond one-to-one with all the random access resources or one-to-one with part of the random access resources, thereby increasing the flexibility of resource configuration.

[0118] In combination with the fourth aspect, in some implementations of the fourth aspect, each first resource of the at least one first resource or each second resource of the at least one second resource is offset from the corresponding random access resource by a value X in time and frequency position.

[0119] In this technical solution, the resources (first resources or second resources) configured by the network device correspond one-to-one to the random access resources, but they cannot overlap in time and frequency position, otherwise it may affect the transmission of the first resource or the second resource. Therefore, each first resource or second resource can have a certain offset X with the corresponding random access resource in time and frequency position, so as to ensure the transmission of the first resource or the second resource.

[0120] In combination with the fourth aspect, in certain implementations of the fourth aspect, the processing unit is also used to determine that the first signal is sent when the signal quality of the downlink signal satisfies a first condition, and the first condition includes at least one of the following three items: the signal quality of the current cell and the signal quality of the neighboring cell simultaneously drop to the corresponding threshold or the amplitude of the simultaneous decrease reaches the corresponding threshold; the signal quality of the current cell and the signal quality of the neighboring cell simultaneously drop to the corresponding threshold within the first time period or the amplitude of the simultaneous decrease reaches the corresponding threshold; the signal quality of the current cell and the signal quality of the neighboring cell simultaneously drop to the corresponding threshold or the amplitude of the simultaneous decrease reaches the corresponding threshold when measured K times.

[0121] In this technical solution, the terminal device determines whether the signal quality meets the requirements for sending the first signal from different angles and conditions. The judgment conditions are more flexible and more complex, which can increase the accuracy of the judgment.

[0122] In combination with the fourth aspect, in certain implementations of the fourth aspect, the transceiver unit is further used to receive first indication information; and the processing unit is further used to determine that the second resource is activated based on the first indication information.

[0123] In this technical solution, the network device sends a first indication message according to a decrease in transmission power, the terminal device receives the first indication message, and determines that the second resource has been activated according to the first indication message. Before sending a paging message, the network device may send at least one second signal to the terminal device, and the terminal device may receive the second signal based on the second resource.

[0124] In combination with the fourth aspect, in certain implementations of the fourth aspect, the first indication information includes a first time period, and the first indication information indicates that the second resource is activated for the terminal device during the first time period.

[0125] In this technical solution, the network device can predict the movement trajectory and thus can predetermine the timing for reducing the transmission power. Therefore, the first indication information can specifically indicate the first time period during which the transmission power is reduced. The transmission power is reduced during this first time period, and the terminal device receives the second signal based on the second resource during this first time period.

[0126] In combination with the fourth aspect, in some implementations of the fourth aspect, the second resource is activated after the transceiver unit sends at least one first signal.

[0127] In this technical solution, after the terminal device sends at least one first signal, the network device receives the first signal and activates the second resource, that is, the network device can send the second signal on the second resource, avoiding unnecessary sending of downlink signals and reducing resource loss.

[0128] In combination with the fourth aspect, in certain implementations of the fourth aspect, after the first resource and the second resource are activated, the terminal device does not receive the second signal within a second time period, and the second resource is deactivated.

[0129] In this technical solution, after the first resource and the second resource are activated, they are no longer used for other signaling transmissions, but are specifically used to transmit alarm signals. If it is found that the device has not received the alarm signal within a period of time, the second resource can be deactivated to avoid resource waste.

[0130] In combination with the fourth aspect, in certain implementations of the fourth aspect, after the transceiver unit sends the first signal, the terminal device receives feedback information from the network device, and the first resource is deactivated.

[0131] In this technical solution, after the first resource and the second resource are activated, the terminal device sends a first signal based on the first resource, and then receives feedback information from the network device. Based on the feedback information, the terminal device can determine that the network device has received the first signal, and the subsequent first signal can be considered invalid, and there is no need to continue sending the first signal, thereby avoiding unnecessary signaling overhead.

[0132] In combination with the fourth aspect, in certain implementations of the fourth aspect, after the network device sends the second signal and receives feedback information from the terminal device, the first resource and the second resource are deactivated.

[0133] In this technical solution, after the first resource and the second resource are activated, the network device receives feedback information from the terminal device after sending the second signal to the terminal device. Based on the feedback information, the network device can determine that the terminal device has received the second signal, and there is no need to continue transmitting the first signal and the second signal, and deactivate the first resource and the second resource, thereby avoiding unnecessary signaling overhead and saving resources.

[0134] In combination with the fourth aspect, in certain implementations of the fourth aspect, the processing unit is further used to send second indication information based on the quality of the downlink signal, and the second indication information is used to indicate deactivation of the first resource and the second resource.

[0135] In this technical solution, the terminal device determines that when the signal quality of the current cell and the neighboring cell has recovered to a certain threshold based on the signal quality of the downlink signal and meets the requirements of direct communication, there is no need to use an alarm signal to instruct the terminal device to adjust the signal quality. The first resource and the second resource can be deactivated, thereby reducing unnecessary transmission of alarm signals and reducing resource reservation.

[0136] In combination with the fourth aspect, in some implementations of the fourth aspect, the first signal or the second signal is associated with an identifier of the terminal device.

[0137] In this technical solution, each of the at least one first resource configured by the network device is used for multiple UEs to send uplink alarm signals according to the signal quality of the downlink signal, and each of the at least one second resource configured by the network device is used for multiple terminal devices to receive downlink alarm signals. Different UEs send different uplink alarm signals, and the network device sends different downlink alarm signals to different UEs. Therefore, the UE's identity ID corresponds to the corresponding alarm signal one-to-one. After the network device receives the first signal associated with the terminal device identifier based on the first resource, it can send the second signal associated with the terminal device identifier on the corresponding second resource. The terminal device receives the second signal of the associated identifier and determines that the network device has successfully received the alarm signal of the terminal device.

[0138] In a fifth aspect, a communication device is provided, the device being used to execute the method provided in any of the first aspect or the second aspect. Specifically, the communication device may include a unit and / or module, such as a processing unit and / or a communication unit, for executing the method provided in any of the above-mentioned implementations of any of the first aspect or the second aspect.

[0139] In one implementation, the communication device includes a communication unit and a processing unit, the communication unit may be a transceiver, or an input / output interface; the processing unit may be at least one processor. Optionally, the transceiver may be a transceiver circuit. Optionally, the input / output interface may be an input / output circuit.

[0140] In another implementation, the communication device is a chip, a chip system or a circuit in a network device. When the communication device is a chip, a chip system or a circuit in a network device, the communication unit may be an input / output interface, an interface circuit, an output circuit, an input circuit, a pin or a related circuit on the chip, the chip system or the circuit; the processing unit may be at least one processor, a processing circuit or a logic circuit.

[0141] In a sixth aspect, a communication device is provided, comprising a processor and, optionally, a memory, wherein the processor is used to control a transceiver to send and receive signals, the memory is used to store a computer program, and the processor is used to call and run the computer program from the memory, so that the sending device executes a method in any possible implementation of any aspect of the first aspect or the second aspect mentioned above.

[0142] Optionally, the processor is one or more and the memory is one or more.

[0143] Optionally, the memory may be integrated with the processor, or the memory may be provided separately from the processor.

[0144] Optionally, the network device further includes a transceiver, which may specifically be a transmitter (transmitter) and a receiver (receiver).

[0145] In the seventh aspect, a computer-readable storage medium is provided, which stores a computer program or code. When the computer program or code is run on a computer, the computer executes a method in any possible implementation of any aspect of the first or second aspect.

[0146] In an eighth aspect, a chip is provided, comprising at least one processor, wherein the at least one processor is coupled to a memory, the memory is used to store a computer program, and the processor is used to call and run the computer program from the memory, so that a sending device equipped with the chip system executes a method in any possible implementation of any aspect of the first or second aspect mentioned above.

[0147] The chip may include an input circuit or interface for sending information or data, and an output circuit or interface for receiving information or data.

[0148] In a ninth aspect, a computer program product is provided, which includes: a computer program code, which, when the computer program code is executed by a sending device, executes a method in any possible implementation of any aspect of the first aspect or the second aspect.

[0149] The beneficial effects of the fifth to ninth aspects can refer to the beneficial effects of the first to fourth aspects and will not be elaborated on again. BRIEF DESCRIPTION OF THE DRAWINGS

[0150] Figure 1 It is a schematic diagram of an architecture 100 of a communication system applicable to an embodiment of the present application.

[0151] Figure 2 It is a schematic diagram of an architecture 200 of a communication system applicable to an embodiment of the present application.

[0152] Figure 3 It is a schematic diagram of an architecture 300 of a communication system applicable to an embodiment of the present application.

[0153] Figure 4 It is a schematic diagram of an architecture 400 of a communication system applicable to an embodiment of the present application.

[0154] Figure 5 It is a schematic diagram of an architecture 500 of a communication system applicable to an embodiment of the present application.

[0155] Figure 6 It is a schematic flow chart of a communication method applicable to an embodiment of the present application.

[0156] Figure 7 It is a structural block diagram of a communication device applicable to an embodiment of the present application.

[0157] Figure 8 It is a structural block diagram of a communication device applicable to an embodiment of the present application. DETAILED DESCRIPTION

[0158] The technical solution in this application will be described below in conjunction with the accompanying drawings.

[0159] The technical solution provided in this application can be applied to various communication systems, such as: fifth generation (5th generation, 5G) or new radio (new radio, NR) system, long term evolution (long term evolution, LTE) system, LTE frequency division duplex (frequency division duplex, FDD) system, LTE time division duplex (time division duplex, TDD) system, etc. The technical solution provided in this application can also be applied to future communication systems, such as the sixth generation mobile communication system. The technical solution provided in this application can also be applied to device to device (D2D) communication, vehicle to everything (V2X) communication, machine to machine (M2M) communication, machine type communication (MTC), and Internet of things (IoT) communication system or other communication systems.

[0160] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0161] First, a communication system applicable to the present application is briefly introduced as follows.

[0162] Figure 1 1 is a schematic diagram of an architecture 100 of a communication system applicable to an embodiment of the present application. Figure 1 As shown in the figure, the ground mobile terminal UE accesses the network through the 5G new air interface, and the 5G access network equipment is deployed on the satellite and connected to the ground core network through a wireless link. At the same time, there is a wireless link between the satellites to complete the signaling interaction and user data transmission between the access network equipment. Figure 1The various network elements and their interfaces are described as follows:

[0163] Terminal device: A mobile device that supports the 5G new air interface, typically a mobile phone, pad, etc. It can access the satellite network through the air interface and initiate calls, surf the Internet, and other services.

[0164] 5G access network equipment: mainly provides wireless access services, dispatches wireless resources to access terminals, provides reliable wireless transmission protocols and data encryption protocols, such as base stations.

[0165] 5G core network: user access control, mobility management, session management, user security authentication, billing and other services. It consists of multiple functional units, which can be divided into functional entities of the control plane and the data plane. The access and mobility management unit (AMF) is responsible for user access management, security authentication, and mobility management. The user plane unit (UPF) is responsible for managing the transmission of user plane data, traffic statistics and other functions.

[0166] Ground station: responsible for forwarding signaling and business data between satellite access network equipment and 5G core network.

[0167] 5G New Air Interface: The wireless link between the terminal and access network equipment.

[0168] Xn interface: The interface between 5G access network equipment and access network equipment, mainly used for signaling interaction such as switching.

[0169] NG interface: The interface between 5G access network equipment and 5G core network, which mainly interacts with the core network's NAS and other signaling, as well as user business data.

[0170] In the non-terrestrial network NTN network, a variety of NTN-based RAN architectures (NTN-based NG-RAN architectures) are defined. The following is an example of the RAN architecture applicable to NTN.

[0171] Figure 2 It is a schematic diagram of an architecture 200 of a communication system applicable to an embodiment of the present application. Figure 2 The architecture shown is called RAN architecture with transparent satellite. Figure 2As shown, in the transparent scenario, the role of the satellite is to achieve frequency conversion and radio frequency amplification, which is equivalent to an analog RF repeater. Therefore, the satellite copies the NR Uu radio interface signal from the feeder link (between the NTN gateway and the satellite) to the service link (between the satellite and the UE), and vice versa. The satellite radio interface SRI (Satellite Radio Interface) on the feeder link transmits the NR-Uu interface signal, that is, the satellite does not terminate the NR Uu interface signal, but copies the signal. The NTN gateway supports all necessary functions for forwarding NR-Uu interface signals. Different transmission satellites can be connected to the same ground gNB.

[0172] Figure 3 It is a schematic diagram of another architecture 300 of a communication system applicable to an embodiment of the present application. Figure 3 The architecture shown is named Regenerative satellite without ISL (inter-satellite link). In this architecture, the satellite acts as a base station to regenerate the signal received from the ground, that is, the service link between the UE and the satellite transmits the NR-Uu radio interface signal, and the feeder link between the NTN gateway and the satellite transmits the satellite radio interface (SRI) signal. The SRI interface is a transmission link between the NTN gateway and the satellite. The NG interface signal is transmitted to the NTN gateway through the SRI interface, and then forwarded by the NTN gateway to the core network equipment on the ground. The process of transmitting the NG interface signal from the ground core network equipment to the satellite base station is similar and will not be repeated here.

[0173] Figure 4 It is a schematic diagram of another architecture 400 of a communication system applicable to an embodiment of the present application. Figure 4 The architecture shown is named Regenerative satellite with ISL. In this scenario, the satellite also acts as a base station. The difference from the previous scenario is that there is an ISL. ISL is an inter-satellite transmission link. As shown in the figure above, UEs served by an on-board base station can access the 5G core network through the ISL. Base stations on different satellites can be connected to the same terrestrial 5G core network.

[0174] Figure 5 It is a schematic diagram of another architecture 500 of a communication system applicable to an embodiment of the present application. Figure 5The architecture shown is named NG-RAN with a regenerative satellitebased on gNB-DU. In this scenario, the CU and DU of the base station are separated. The satellite is on board as the DU of the base station. The satellite regenerates the signal received from the ground, i.e. the service link between the UE and the satellite transmits the NR-Uu radio interface signal, and the feeder link between the NTN gateway and the satellite transmits the satellite radio interface (SRI) signal. The satellite radio interface is a transmission link that can transmit the logical interface F1 signal of the 3GPP standard. On the satellite radio interface, the F1 protocol signal is transmitted. The satellite can provide inter-satellite links (ISL) between satellites. The NTN gateway is a transport network layer node and supports all necessary transport protocols. DUs on different satellites can be connected to the same ground CU.

[0175] It should be noted that the above RAN architecture is only an exemplary description and may also be used in other NTN architectures, or 4G, 5G, and future wireless network architectures. The embodiments of the present application are not limited to this.

[0176] In the NTN network, the round-trip transmission delay is large and the path loss is large. For the direct connection requirements of terminal devices, if the current signal of the terminal device is deteriorated, for example, it is in an obstructed state, even using a large number of ground coverage repetitions and the lowest modulation and coding methods cannot meet the decoding requirements, and the terminal device and satellite communication are difficult.

[0177] In view of this, an embodiment of the present application provides a communication solution to ensure that the terminal device can achieve direct communication with the satellite even when the signal status is poor.

[0178] The communication method provided by the embodiment of the present application will be described in detail below with reference to the accompanying drawings. The embodiment provided by the present application can be applied to the above Figures 1 to 5 The communication system shown is not limited.

[0179] The solution of this application is described in detail below.

[0180] Figure 6 It is a schematic flow chart of a method for NTN communication provided by an embodiment of the present application. For ease of description, method 600 is exemplarily described below by taking the interaction between a network device and a terminal device as an example. It can be understood that the terminal device can be a component of the terminal device (such as a chip or circuit), or the network device can also be a component of the network device (such as a chip or circuit), without limitation.

[0181] Among them, the network equipment includes a satellite or an access network equipment corresponding to the satellite, which is not limited in this application.

[0182] Figure 6 The illustrated method 600 may include the following steps.

[0183] S610: A network device determines at least one first resource and at least one second resource.

[0184] Each first resource of the at least one first resource is used by the terminal device to send at least one first signal.

[0185] Each second resource of the at least one second resource is used by the terminal device to receive at least one second signal.

[0186] First, the first signal and the second signal will be described.

[0187] In the present application, the first signal and the second signal may be alarm signals.

[0188] The first signal may be understood as an uplink alarm signal, and the second signal may be understood as a downlink alarm signal.

[0189] In the present application, the network device receives an uplink alarm signal from the terminal device, and the network device may send a downlink alarm signal before sending a paging message to the terminal device.

[0190] Exemplarily, the alarm signal may be a pseudo-random sequence.

[0191] For example, the alarm signal can be a sequence with a narrow bandwidth and a large number of repetitions, and the link budget is significantly higher than the data transmission. For example, the preamble sequence of single subcarrier access of narrowband Internet of Things (NB-IoT) is a specific example.

[0192] Next, the first resource and the second resource are described.

[0193] The network device may determine one or more first resources, each first resource being used for the terminal device to transmit a first signal.

[0194] The network device may determine one or more second resources, each second resource being used for the terminal device to receive the second signal.

[0195] The first resource includes time-frequency resources for uplink scheduling, and the second resource includes time-frequency resources for downlink scheduling.

[0196] It can be understood that the first resource is the time-frequency resource for the terminal device to send the first signal, and the second resource is the time-frequency resource for the terminal device to receive the second signal.

[0197] In a possible implementation, all first resources or all second resources configured by the network device have a mapping relationship with part or all of the third resource.

[0198] The third resource may be a downlink synchronization resource or an access resource configured by the network device.

[0199] An optional understanding is that the time-frequency resources of the first resource or the time-frequency resources of the second resource are related to the time-frequency resources of the third resource.

[0200] Exemplarily, all first resources in at least one first resource or all second resources in at least one second resource correspond one-to-one to part or all downlink synchronization signal blocks (synchronization signal block, SSB) in at least one downlink synchronization signal block.

[0201] An optional understanding is that the first resource or the second resource configured by the network device is associated with the downlink SSB, and each first resource or second resource corresponds to an SSB.

[0202] For all SSBs configured in the network device, each SSB may correspond to a first resource or a second resource, or a part of the SSBs may correspond to a first resource or a second resource.

[0203] The network device can configure an index set of a part of the SSBs in the entire SSB, that is, the SSB indicated by the index in the index set corresponds to the first resource or the second resource.

[0204] For example, the network device is configured with M SSBs, and the N first resources determined by the network device correspond one-to-one to the N SSBs in the M SSBs, or in other words, each SSB in the N SSBs corresponds to a first resource.

[0205] For another example, the network device is configured with N SSBs, and the N first resources determined by the network device correspond one-to-one to the N SSBs, or in other words, each of the N SSBs corresponds to a first resource.

[0206] It should be noted that one SSB can correspond to multiple uplink resources of multiple terminal devices, which is not limited in the embodiments of the present application.

[0207] It should be noted that some or all SSBs are mapped with first resources or second resources. For these SSBs with resource mapping, the first resources or second resources used to send alarm signals have a certain offset X in time-frequency position with the random access occasion (RACH occasion, RO) resources.

[0208] In the present application, the offset X may be configured by the network device or agreed upon by the protocol, and the embodiments of the present application do not limit this.

[0209] It can be understood that for SSBs without resource mapping, there are no corresponding resources for sending uplink alarm signals.

[0210] In a possible implementation, when the RO resource conflicts with the first resource or the second resource in the time domain, the first resource or the second resource is transmitted first, that is, the RO resource is released.

[0211] Exemplarily, all first resources in the at least one first resource or all second resources in the at least one second resource correspond one-to-one to part or all of the random access resources in the at least one random access resource.

[0212] An optional understanding is that the first resource or the second resource configured by the network device is associated with the random access RO resource, and each first resource or the second resource corresponds to one RO resource.

[0213] For all RO resources configured in the network device, each RO resource may correspond to a first resource or a second resource, or a part of the RO resources may correspond to a first resource or a second resource.

[0214] There is a certain offset X between the first resource or the second resource and the corresponding RO resource in terms of time and frequency position.

[0215] In the present application, the offset X may be configured by the network device or agreed upon by the protocol, and the embodiments of the present application do not limit this.

[0216] Exemplarily, the random access resources corresponding to some or all downlink synchronization signal blocks release their resources for transmitting the first resource or the second resource.

[0217] An optional understanding is that part or all of the SSBs are mapped with the first resource or the second resource. For these SSBs with resource mapping, their configured RO resources can release their resources to carry the first resource or the second resource.

[0218] It is understandable that for SSB without resource mapping, there are no corresponding resources for sending alarm signals, and RO resources can be configured, which is not limited in the embodiments of the present application.

[0219] In the present application, the first resource and the second resource are configured based on the RO resource and the SSB, and the design method in the existing standard is reused as much as possible, which not only increases the flexibility of the resource configuration but also reduces the implementation complexity.

[0220] S620, the network device sends at least one first resource and at least one second resource before the terminal device enters an inactive state.

[0221] Accordingly, the terminal device receives at least one first resource and at least one second resource before entering the inactive state.

[0222] It should be understood that after the terminal device enters the inactive state, when the signal quality drops to a certain level, the terminal device cannot be directly connected to the network device. Therefore, the network device sends uplink resources and downlink resources before the terminal device enters the inactive state.

[0223] Exemplarily, the network device instructs the terminal device to send the at least one first resource and the at least one second resource when releasing a radio resource control (RRC) connection.

[0224] In a possible implementation, after receiving the first resource, the terminal device sends at least one first signal according to the signal quality of the downlink signal, and the network device receives the first signal and sends at least one second signal before sending the paging message.

[0225] It can be understood that when the terminal device detects that the signal quality of the downlink signal is poor (reaching a certain threshold), the terminal device sends at least one first signal based on the first resource. After the network device receives the first signal and determines to page the terminal device, it can first send at least one second signal to the terminal device. When the terminal device receives the at least one second signal, it can adjust the signal quality to ensure successful paging. If the paging fails, the network device can continue to send the second signal to the terminal device until the paging is successful.

[0226] For example, the terminal device is a mobile phone, and the mobile phone receives a second signal in an obstructed environment. At this time, the paging demand can be determined by the second signal, and the terminal device can be moved out of the obstructed environment so that the satellite paging message can be received to ensure a successful direct connection.

[0227] In a possible implementation, the terminal device may measure signal quality, and send at least one first signal when the signal quality meets a first condition.

[0228] Exemplarily, the first condition includes at least one of the following three items:

[0229] 1. The signal quality of the local cell and the signal quality of the neighboring cell simultaneously drop to the corresponding threshold or the amplitude of the simultaneous drop reaches the corresponding threshold.

[0230] 2. The signal quality of the current cell and the signal quality of the neighboring cell simultaneously drop to corresponding thresholds or the amplitudes of the simultaneous drops reach corresponding thresholds within the first time period.

[0231] 3. The signal quality of the local cell and the signal quality of the neighboring cell both drop to the corresponding threshold at the same time or the amplitude of the drop reaches the corresponding threshold at the same time during K measurements.

[0232] The above conditions are only exemplary. The first condition may also include other methods for measuring the cell signal quality, which is not limited in this application.

[0233] The signal quality may be described by reference signal receiving power (RSRP), reference signal receiving quality (RSRQ), and other parameters used to represent radio resource management (RRM) measurement results. Other parameters indicating signal quality may also be used to describe the signal quality, which is not limited in the embodiments of the present application.

[0234] The thresholds corresponding to the signal quality of the current cell and the signal quality of the neighboring cell may be the same or different, and this is not limited in the embodiments of the present application.

[0235] In this application, the terminal device determines the signal quality according to the new measurement criteria, and determines whether it is necessary to send an uplink alarm signal from different angles and under different conditions. More complex judgment conditions can increase the accuracy of the judgment.

[0236] In this application, after the configuration of the first resource and the second resource is sent to the terminal device, the first resource and the second resource can carry the alarm signal (first signal or second signal) only after being activated, or in other words, the first resource or the second resource can be used to transmit other data in the deactivated state. Only after being activated can it be used to transmit the alarm signal.

[0237] The following describes the activation method of the first resource and the second resource in the embodiment of the present application.

[0238] Exemplarily, the activation method of the first resource may be any of the following:

[0239] In a possible implementation, when the terminal device receives the first resource, the first resource is activated.

[0240] In a possible implementation, the terminal device determines that the first resource has been activated according to an instruction of the network device.

[0241] In a possible implementation, the terminal device determines that the first resource has been activated according to a timing relationship agreed upon in a protocol.

[0242] Exemplarily, the activation method of the second resource may be any of the following:

[0243] In a possible implementation, when the terminal device receives the configuration of the second resource, the second resource is activated.

[0244] In a possible implementation, it is determined that the second resource has been activated according to a timing relationship agreed upon in a protocol.

[0245] In a possible implementation, the network device may send first indication information to the terminal device, indicating that the second resource has been activated.

[0246] It should be understood that the network device may need to reduce the transmission power at irregular time periods due to interference avoidance or other requirements to reduce interference and impact on other systems. The network device may send first indication information to the terminal device in advance to indicate that the second resource of the terminal device has been activated. Before sending the paging message, the network device may send at least one second signal to the terminal device, and the terminal device receives the second signal based on the second resource.

[0247] Correspondingly, after receiving the second signal, the terminal device can adjust the signal quality to ensure that the paging message from the network device can be received.

[0248] In one possible implementation, a network device (e.g., a satellite) can predict a motion trajectory, so the timing for reducing power can also be predetermined. When the network device sends a first indication message, it can indicate a first time period, which is used to indicate that the second resource of the terminal device is activated in the first time period. Accordingly, after receiving the first indication message, the terminal device receives a second signal based on the second resource within the first time period.

[0249] It is understandable that if the transmission power of the network device is directly reduced to the extent that communication is impossible, the terminal device can adopt cell reselection or enter a power saving mode to avoid trying to continue communicating with the current satellite. If the network device appropriately reduces the power, the terminal device can continue to receive the downlink signal. At this time, the downlink signal can be enhanced to a certain extent based on the prior art, such as the number of repetitions and the scaling of the corresponding resources. The embodiments of the present application are not limited to this.

[0250] In a possible implementation, after the terminal device sends at least one first signal, a second resource corresponding to a subsequent second signal is activated.

[0251] It should be understood that when the terminal device does not send the first signal on the first resource, the second resource corresponding to the second signal will not be activated, and the second resource can be used for downlink data transmission. When the signal quality measured by the terminal device meets the first condition, the terminal device sends the first signal, and after the network device receives the first signal, it activates the second resource, which can be used to transmit the second signal but not for transmitting downlink data, and the terminal device receives the second signal on the second resource.

[0252] In one possible implementation, when the first resource is activated, the second resource is activated at the same time, or when the second resource is activated, the first resource is activated at the same time. The activation method can be agreed upon by the protocol, and the embodiment of the present application does not limit this.

[0253] In one possible implementation, the number of resources activated each time and the activation time may be configured by the network device, or may be agreed upon by a protocol, and this embodiment of the present application does not limit this.

[0254] In the present application, activation of resources may also be understood as effectiveness, and activated or effective resources may be used to transmit alarm signals.

[0255] The above resource activation methods are only exemplary and are not limited to this embodiment of the present application.

[0256] The following describes the deactivation method of the first resource and the second resource in the embodiment of the present application.

[0257] In a possible implementation, after the first resource and the second resource are activated, the terminal device does not receive the second signal within a second time period, and the terminal device stops receiving the second signal (the second resource has been deactivated).

[0258] It is understood that after the second resource is activated, the terminal device will receive the second signal on the second resource, or in other words, the second resource is no longer used for downlink data transmission, but is only used to transmit the downlink alarm signal (second signal). If the terminal device does not receive the second signal for a period of time (second time period), then the second resource can be understood to have been deactivated, or it can also be understood to be invalid. It is understood that after the second resource is deactivated, it may be used for downlink data transmission.

[0259] In a possible implementation, after the terminal device sends the first signal, it receives feedback information from the network device, and the terminal device stops sending the first signal (the first resource has been deactivated).

[0260] It can be understood that after the first resource and the second resource are activated, the terminal device can send the first signal based on the first resource, and the terminal device can receive the second signal based on the second resource. When the terminal device sends the first signal and receives feedback information from the network device, and the feedback information indicates that the network device has received the first signal, then the subsequent first signal can be considered invalid, and the first resource can be considered to be deactivated, or deactivated for a period of time. The terminal device can stop sending the first signal, or the terminal device stops sending subsequent first signals for a period of time, and can try to continue sending subsequent first signals after a period of time. This application does not limit this.

[0261] In a possible implementation, the network device sends a second signal and receives feedback information from the terminal device, and the first resource and the second resource are deactivated.

[0262] It can be understood that after the first resource and the second resource are activated, the terminal device can send the first signal based on the first resource, and the terminal device can receive the second signal based on the second resource. When the network does not send the second signal and receives feedback information from the terminal device, and the feedback information indicates that the terminal device has received the second signal, then the subsequent second signal can be considered invalid, and the second resource can be considered to be deactivated. Similarly, the subsequent first signal of the terminal device can also be considered invalid, and the first resource can be considered to be deactivated. The terminal device can stop sending the first signal, or the terminal device stops sending subsequent first signals for a period of time, and can try to continue sending subsequent first signals after a period of time. The network device can stop sending the second signal, or the network device stops sending subsequent second signals for a period of time, and can try to continue sending subsequent second signals after a period of time. This application does not limit this.

[0263] In a possible implementation, the network device receives the second indication information, and determines to stop transmitting the first signal and the second signal (deactivate the first resource and the second resource) according to the second indication information.

[0264] It can be understood that the terminal device can determine whether to send the second indication information based on the quality of the downlink signal. For example, when the signal quality of the current cell and the neighboring cell detected by the terminal device recovers to a certain threshold, the network device can be instruct to deactivate the first resource and the second resource, and the terminal device stops sending the first signal and the network device stops sending the second signal.

[0265] It can also be understood that the first resource and the second resource are deactivated within a period of time, and after a period of time, the terminal device can continue to send the first signal and the network device can continue to send the second signal.

[0266] Exemplarily, the second indication information may be indicated by random access, or may be notified by other signaling, which is not limited in the embodiments of the present application.

[0267] In this technical solution, when the terminal recovers to a normal coverage situation, unnecessary uplink and downlink alarm signal sending and resource reservation can be reduced, thereby saving power consumption and resources.

[0268] In the present application, the activation and deactivation methods of uplink resources and downlink resources are more flexible, reducing resource waste and terminal power consumption.

[0269] In the present application, the first resource and the second resource configured by the network device to the terminal device can be used to transmit an alarm signal with one terminal device, or can be used to transmit an alarm signal with multiple terminal devices, that is, the same resource can be used to transmit an alarm signal to multiple terminal devices. This scheme is explained below.

[0270] In one possible implementation, each of the at least one first resource configured by the network device is used for multiple UEs to send uplink alarm signals based on the signal quality of the downlink signal, and each of the at least one second resource configured by the network device is used for multiple terminal devices to receive downlink alarm signals.

[0271] It should be noted that different UEs send different uplink warning signals, and network devices send different downlink warning signals to different UEs. Therefore, the UE identity ID corresponds to the corresponding warning signal one by one.

[0272] In a possible implementation, the first signal or the second signal is associated with an identifier of the terminal device.

[0273] Specifically, after the network device receives a first signal associated with a terminal device identifier based on a first resource, it may send a second signal associated with the terminal device identifier on a corresponding second resource. The terminal device receives the second signal of the associated identifier and determines that the network device has successfully received the alarm signal of the terminal device.

[0274] For example, UE#1 sends a first signal #1 to a network device based on a first resource, and UE#2 sends a first signal #2 to a network device based on the first resource, wherein the first signal #1 is associated with the ID of UE#1, and the first signal #2 is associated with the ID of UE#2. After receiving the first signal #1, the network device can send the second signal #1 to UE#1 based on the second resource; similarly, after receiving the first signal #2, the network device can send the second signal #2 to UE#2 based on the second resource.

[0275] It can be understood that when the downlink alarm signal sent by the network device does not match the identifier of the terminal device, the terminal device can continue to send subsequent uplink alarm signals until the network device successfully receives the alarm signal from the terminal device and stops sending the uplink alarm signal, or it can determine to stop sending subsequent uplink alarm signals based on a timer. The embodiments of the present application are not limited to this.

[0276] Based on the above technical solution, the network device configures resources for transmitting alarm signals to the terminal device in the non-activated state. The terminal device sends an uplink alarm signal based on the signal quality. After receiving the uplink alarm signal, the network device sends a downlink alarm signal before sending a paging message. The signal quality is adjusted based on the downlink alarm signal received by the terminal device to ensure that the terminal device can successfully receive the paging message and realize direct communication. Among them, the resources used to transmit the alarm signal can be based on RO resources and SSB configuration, and the design method in the existing standard can be reused as much as possible, which not only increases the flexibility of the resource configuration, but also reduces the implementation complexity; in addition, the terminal device judges the signal quality according to the new measurement criteria, and judges whether it is necessary to send an uplink alarm signal from different angles and different conditions. More complex judgment conditions can increase the accuracy of the judgment; further, the activation and deactivation methods of uplink resources and downlink resources are more flexible, reducing resource waste and terminal power consumption.

[0277] It should be understood that other possible implementations of the embodiments of the present application are similar to the above-mentioned method 600. Please refer to the description in method 600, which will not be repeated here.

[0278] It should be understood that the sequence numbers of the above processes do not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0279] The above mainly introduces the solution provided by the embodiment of the present application from the perspective of the interaction between various network elements. It can be understood that each network element, such as a transmitting end device or a receiving end device, includes a hardware structure and / or software module corresponding to the execution of each function in order to realize the above functions. Those skilled in the art should be aware that, in combination with the units and algorithm steps of each example described in the embodiments disclosed in this document, the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is executed in the form of hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to exceed the scope of this application.

[0280] The embodiment of the present application can divide the functional modules of the transmitting end device or the receiving end device according to the above method example. For example, each functional module can be divided corresponding to each function, or two or more functions can be integrated into one processing module. The above integrated module can be implemented in the form of hardware or in the form of software functional modules. It should be noted that the division of modules in the embodiment of the present application is schematic and is only a logical functional division. There may be other division methods in actual implementation. The following is an example of dividing each functional module corresponding to each function.

[0281] Above, combined Figure 6 The method provided by the embodiment of the present application is described in detail. Figures 7 and 8 The device provided in the embodiment of the present application is described in detail. It should be understood that the description of the device embodiment corresponds to the description of the method embodiment, so the contents not described in detail can be referred to the method embodiment above, and for the sake of brevity, they will not be repeated here.

[0282] Figure 7 It is a structural diagram of a communication device provided in an embodiment of the present application.

[0283] The device 700 includes a transceiver unit 710 and a processing unit 720, wherein the transceiver unit 710 can be used to implement corresponding communication functions, and the processing unit 720 can be used to perform data processing.

[0284] Optionally, the transceiver unit 710 may also be referred to as a communication interface or a communication unit, including a sending unit and / or a receiving unit. The transceiver unit 710 may be a transceiver (including a transmitter and / or a receiver), an input / output interface (including an input and / or output interface), a pin or a circuit, etc. The transceiver unit 710 may be used to perform the steps of sending and / or receiving in the above method embodiment.

[0285] Optionally, the processing unit 720 may be a processor (may include one or more), a processing circuit with a processor function, etc., and may be used to execute other steps except sending and receiving in the above method embodiment.

[0286] Optionally, the device 700 further includes a storage unit, which may be a memory, an internal storage unit (e.g., a register, a cache, etc.), an external storage unit (e.g., a read-only memory, a random access memory, etc.), etc. The storage unit is used to store instructions, and the processing unit 720 executes the instructions stored in the storage unit so that the communication device executes the above method.

[0287] In one design, the device 700 can be used to execute the actions executed by the network device in each of the above method embodiments, such as the device 700 can be used to execute the actions executed by the network device in the above method 600. In this case, the device 700 can be a component of the network device, the transceiver unit 710 is used to execute the operations related to transceiving on the network device side in the above method embodiments, and the processing unit 720 is used to execute the operations related to processing of the network device in the above method embodiments.

[0288] For example, the processing unit 720 is used to determine at least one first resource and at least one second resource, each of the at least one first resource is used for the terminal device to send at least one first signal according to the signal quality of the downlink signal, and each of the at least one second resource is used for the terminal device to receive at least one second signal, each first resource includes an uplink scheduled time-frequency resource, and each second resource includes a downlink scheduled time-frequency resource; the transceiver unit 710 is used to send the at least one first resource and the at least one second resource before the terminal device enters an inactive state.

[0289] Optionally, the transceiver unit 710 is further configured to send the at least one second signal before sending the paging message.

[0290] The transceiver unit 710 is further used to send first indication information, where the first indication information is used to indicate that the second resource of the terminal device is activated.

[0291] It should be understood that the transceiver unit 710 and the processing unit 720 may also perform other operations performed by the network device in the above method 600, which will not be described in detail here.

[0292] In one design, the apparatus 700 may be used to execute the actions executed by the terminal device in each of the above method embodiments, such as the apparatus 700 may be used to execute the actions executed by the terminal device in the above method 600. In this case, the apparatus 700 may be a component of the terminal device, the transceiver unit 710 is used to execute the transceiver-related operations on the terminal device side in the above method embodiments, and the processing unit 720 is used to execute the processing-related operations on the terminal device side in the above method embodiments.

[0293] For example, the transceiver unit 710 is used to receive at least one first resource and at least one second resource before entering an inactive state, each of the at least one first resource is used for the terminal device to send at least one first signal according to the signal quality of the downlink signal, and each of the at least one second resource is used for the terminal device to receive at least one second signal, each first resource includes an uplink scheduled time-frequency resource, and each second resource includes a downlink scheduled time-frequency resource; the transceiver unit 710 is also used to receive the second signal before receiving a paging message.

[0294] Optionally, the processing unit 720 is configured to send at least one of the first signals according to signal quality of the downlink signal.

[0295] Optionally, the processing unit 720 is used to send the first signal when it is determined that the signal quality of the downlink signal satisfies a first condition, and the first condition includes at least one of the following three items: the signal quality of the current cell and the signal quality of the neighboring cell simultaneously drop to corresponding thresholds or the amplitude of the simultaneous decrease reaches the corresponding threshold; the signal quality of the current cell and the signal quality of the neighboring cell simultaneously drop to corresponding thresholds or the amplitude of the simultaneous decrease reaches the corresponding threshold within the first time period; the signal quality of the current cell and the signal quality of the neighboring cell simultaneously drop to corresponding thresholds or the amplitude of the simultaneous decrease reaches the corresponding threshold when measured K times.

[0296] Optionally, the transceiver unit 710 is used for first indication information; the processing unit is further used to determine that the second resource is activated according to the first indication information.

[0297] It should be understood that the transceiver unit 710 and the processing unit 720 can also perform other operations performed by the terminal device in the above method 600, which will not be described in detail here.

[0298] It should also be understood that the device 700 here is embodied in the form of a functional unit. The term "unit" here may refer to an application specific integrated circuit (ASIC), an electronic circuit, a processor (such as a shared processor, a proprietary processor or a group processor, etc.) and a memory for executing one or more software or firmware programs, a merged logic circuit and / or other suitable components that support the described functions. In an optional example, those skilled in the art can understand that the device 700 can be specifically a network device in the above-mentioned embodiments, and can be used to execute the various processes and / or steps corresponding to the network device in the above-mentioned method embodiments. To avoid repetition, it will not be repeated here.

[0299] The apparatus 700 of each of the above-mentioned schemes has the function of implementing the corresponding steps executed by the device in the above-mentioned method, or the apparatus 700 of each of the above-mentioned schemes has the function of implementing the corresponding steps executed by the network device in the above-mentioned method. The function can be implemented by hardware, or the corresponding software can be implemented by hardware. The hardware or software includes one or more modules corresponding to the above-mentioned functions; for example, the transceiver unit can be replaced by a transceiver (for example, the sending unit in the transceiver unit can be replaced by a transmitter, and the receiving unit in the transceiver unit can be replaced by a receiver), and other units, such as the processing unit, can be replaced by a processor to respectively perform the sending and receiving operations and related processing operations in each method embodiment.

[0300] In addition, the transceiver unit 710 may also be a transceiver circuit (for example, may include a receiving circuit and a sending circuit), and the processing unit may be a processing circuit.

[0301] It should be pointed out that Figure 7 The device in the embodiment may be a network element or device in the foregoing embodiment, or may be a chip or a chip system, such as a system on chip (SoC). The transceiver unit may be an input / output circuit or a communication interface; the processing unit may be a processor or a microprocessor or an integrated circuit integrated on the chip. This is not limited here.

[0302] Figure 8 It is a schematic diagram of a communication architecture provided in an embodiment of the present application. Figure 8 The communication device 800 shown includes: a processor 810, a memory 820 and a transceiver 830. The processor 810 is coupled to the memory 820 and is configured to execute instructions stored in the memory 820 to control the transceiver 830 to send and / or receive signals.

[0303] It should be understood that the processor 810 and the memory 820 can be combined into a processing device, and the processor 810 is used to execute the program code stored in the memory 820 to implement the above functions. In specific implementation, the memory 820 can also be integrated into the processor 810, or independent of the processor 810. It should be understood that the processor 810 can also correspond to each processing unit in the above communication device, and the transceiver 830 can correspond to each receiving unit and sending unit in the above communication device.

[0304] It should also be understood that the transceiver 830 may include a receiver (or receiver) and a transmitter (or transmitter). The transceiver may further include an antenna, and the number of antennas may be one or more. The transceiver may also be a communication interface or interface circuit.

[0305] Specifically, the communication device 800 may correspond to the terminal device in the method 600 according to the embodiment of the present application. The communication device 800 may include a unit of the method performed by the network device in the method 600. It should be understood that the specific process of each unit performing the above corresponding steps has been described in detail in the above method embodiment, and for the sake of brevity, it will not be repeated here.

[0306] When the communication device 800 is a chip, the chip includes an interface unit and a processing unit, wherein the interface unit may be an input / output circuit or a communication interface; and the processing unit may be a processor or a microprocessor or an integrated circuit integrated on the chip.

[0307] In the implementation process, each step of the above method can be completed by an integrated logic circuit of hardware in a processor or an instruction in the form of software. The steps of the method disclosed in conjunction with the embodiment of the present application can be directly embodied as a hardware processor for execution, or a combination of hardware and software modules in a processor for execution. The software module can be located in a storage medium mature in the art such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory or an electrically erasable programmable memory, a register, etc. The storage medium is located in a memory, and the processor reads the information in the memory and completes the steps of the above method in conjunction with its hardware. To avoid repetition, it is not described in detail here.

[0308] It should be noted that the processor in the embodiment of the present application can be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method embodiment can be completed by an integrated logic circuit of hardware in the processor or an instruction in the form of software. The above processor can be a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components. The methods, steps and logic block diagrams disclosed in the embodiments of the present application can be implemented or executed. The general-purpose processor can be a microprocessor or the processor can also be any conventional processor, etc. The steps of the method disclosed in the embodiment of the present application can be directly embodied as a hardware decoding processor to perform, or the hardware and software modules in the decoding processor can be combined and performed. The software module can be located in a mature storage medium in the field such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory or an electrically erasable programmable memory, a register, etc. The storage medium is located in a memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware.

[0309] The present application also provides a computer-readable medium on which a computer program is stored. When the computer program is executed by a computer, the functions of any of the above method embodiments are implemented.

[0310] The present application also provides a computer program product, which implements the functions of any of the above method embodiments when executed by a computer.

[0311] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented using software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer instructions are loaded and executed on a computer, the process or function described in the embodiment of the present application is generated in whole or in part. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions may be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from a website site, computer, server or data center by wired (e.g., coaxial cable, optical fiber, digital subscriber line (digital subscriber line, DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) mode to another website site, computer, server or data center. The computer-readable storage medium may be any available medium that a computer can access or a data storage device such as a server or data center that includes one or more available media integrated. The available medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a high-density digital video disc (DVD)), or a semiconductor medium (eg, a solid state disk (SSD)).

[0312] In the embodiments of the present application, words such as "exemplary" and "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "exemplary" in the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of the word "exemplary" is intended to present concepts in a concrete way.

[0313] It should be understood that the "embodiment" mentioned throughout the specification means that the specific features, structures or characteristics related to the embodiment are included in at least one embodiment of the present application. Therefore, the various embodiments in the entire specification do not necessarily refer to the same embodiment. In addition, these specific features, structures or characteristics can be combined in one or more embodiments in any suitable manner.

[0314] It should be understood that in various embodiments of the present application, the size of the sequence number of each process does not mean the order of execution, and the execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application. The names of all nodes and messages in this application are merely names set by this application for the convenience of description. The names in the actual network may be different. It should not be understood that this application limits the names of various nodes and messages. On the contrary, any name with the same or similar function as the node or message used in this application is regarded as the method or equivalent replacement of this application, and is within the scope of protection of this application.

[0315] It should also be understood that in the present application, "when", "if" and "if" all mean that the UE or base station will take corresponding actions under certain objective circumstances. It is not a time limit, and it does not require the UE or base station to make judgments when implementing it, nor does it mean that there are other limitations.

[0316] In addition, the terms "system" and "network" are often used interchangeably in this article. The term "and / or" in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone.

[0317] The term "at least one of..." or "at least one of..." herein refers to all or any combination of the listed items. For example, "at least one of A, B, and C" may refer to the following six situations: A exists alone, B exists alone, C exists alone, A and B exist at the same time, B and C exist at the same time, and A, B, and C exist at the same time. "At least one" herein refers to one or more. "More than one" refers to two or more.

[0318] It should be understood that in each embodiment of the present application, the terms “including”, “comprising”, “having” and their variations all mean “including but not limited to”, unless otherwise specifically emphasized.

[0319] It should be understood that in various embodiments of the present application, the first, second and various digital numbers are only used for the convenience of description and are not used to limit the scope of the embodiments of the present application. For example, to distinguish different information.

[0320] Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0321] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0322] In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0323] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0324] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0325] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application can be essentially or partly embodied in the form of a software product that contributes to the prior art. The computer software product is stored in a storage medium and includes several instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods described in each embodiment of the present application. The aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0326] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A method for non-terrestrial network (NTN) communication, characterized in that: Applied to network equipment, including: Determine at least one first resource and at least one second resource, each of the at least one first resource is used by the terminal device to send at least one first signal according to the signal quality of the downlink signal, and each of the at least one second resource is used by the terminal device to receive at least one second signal, each of the first resources includes a time-frequency resource for uplink scheduling, and each of the second resources includes a time-frequency resource for downlink scheduling; The at least one first resource and the at least one second resource are sent before the terminal device enters an inactive state.

2. The method according to claim 1, characterized in that The method further comprises: The at least one second signal is sent before sending the paging message.

3. The method according to claim 1 or 2, characterized in that: All the first resources in the at least one first resource or all the second resources in the at least one second resource have a mapping relationship with part or all of the third resources in at least one third resource, and the at least one third resource is a downlink synchronization resource or access resource configured by the network device.

4. The method according to claim 3, characterized in that All of the first resources in the at least one first resource or all of the second resources in the at least one second resource correspond one-to-one to part or all of the downlink synchronization signal blocks in the at least one downlink synchronization signal block.

5. The method according to claim 4, characterized in that The random access resources corresponding to part or all of the downlink synchronization signal blocks release their resources for transmitting the first resource or the second resource.

6. The method according to claim 3, characterized in that: All of the at least one first resource or all of the at least one second resource correspond one-to-one to part or all of the at least one random access resource.

7. The method according to claim 5 or 6, characterized in that: Each first resource in the at least one first resource or all second resources in the at least one second resource is offset from the corresponding random access resource by a value X in terms of time and frequency.

8. The method according to any one of claims 1 to 7, characterized in that The first resource is used for the terminal device to send the first signal when determining that the signal quality of the downlink signal meets a first condition, and the first condition includes at least one of the following three items: The signal quality of the local cell and the signal quality of the neighboring cell simultaneously drop to the corresponding threshold or the amplitude of the simultaneous drop reaches the corresponding threshold; The signal quality of the current cell and the signal quality of the neighboring cell simultaneously drop to corresponding thresholds or the amplitude of the simultaneous drop reaches corresponding thresholds within the first time period; The signal quality of the current cell and the signal quality of the neighboring cell both drop to the corresponding threshold at the same time or the amplitude of the drop reaches the corresponding threshold at the same time during the K measurements.

9. The method according to any one of claims 1 to 8, characterized in that The method further comprises: Send first indication information, where the first indication information is used to indicate that the second resource of the terminal device is activated.

10. The method according to claim 9, characterized in that The first indication information includes a first time period, and the first indication information indicates that the second resource is activated by the terminal device during the first time period.

11. The method according to any one of claims 1 to 8, characterized in that The second resource is activated after receiving at least one of the first signals.

12. The method according to any one of claims 1 to 11, characterized in that After the first resource and the second resource are activated, if the terminal device does not receive the second signal within a second time period, the second resource is deactivated.

13. The method according to any one of claims 1 to 11, characterized in that After the terminal device sends the first signal, the terminal device receives feedback information from the network device, and the first resource is deactivated.

14. The method according to any one of claims 1 to 11, characterized in that After the network device sends the second signal and receives feedback information from the terminal device, the first resource and the second resource are deactivated.

15. The method according to any one of claims 1 to 11, characterized in that The method further comprises: receiving second indication information, where the second indication information is determined by the terminal device according to the quality of the downlink signal; Determine deactivation of the first resource and the second resource according to the second indication information.

16. The method according to any one of claims 1 to 15, characterized in that The first signal or the second signal is associated with an identifier of the terminal device.

17. A method for non-terrestrial network (NTN) communication, characterized in that: Applied to terminal equipment, including: Before entering the inactive state, at least one first resource and at least one second resource are received, each of the at least one first resource is used by the terminal device to send at least one first signal according to the signal quality of the downlink signal, and each of the at least one second resource is used by the terminal device to receive at least one second signal, each of the first resources includes a time-frequency resource for uplink scheduling, and each of the second resources includes a time-frequency resource for downlink scheduling; The second signal is received prior to receiving the paging message.

18. The method according to claim 17, characterized in that The method further comprises: At least one of the first signals is sent according to the signal quality of the downlink signal.

19. The method according to claim 18, characterized in that The sending at least one first signal according to the signal quality of the downlink signal includes: When it is determined that the signal quality of the downlink signal satisfies a first condition, the first signal is sent, where the first condition includes at least one of the following three items: The signal quality of the local cell and the signal quality of the neighboring cell simultaneously drop to the corresponding threshold or the amplitude of the simultaneous drop reaches the corresponding threshold; The signal quality of the current cell and the signal quality of the neighboring cell simultaneously drop to corresponding thresholds or the amplitude of the simultaneous drop reaches corresponding thresholds within the first time period; The signal quality of the current cell and the signal quality of the neighboring cell both drop to the corresponding threshold at the same time or the amplitude of the drop reaches the corresponding threshold at the same time during the K measurements.

20. The method according to any one of claims 17 to 19, characterized in that The method further comprises: receiving first indication information; It is determined that the second resource is activated according to the first indication information.

21. The method according to claim 20, characterized in that The first indication information includes a first time period, and the first indication information indicates that the second resource is activated by the terminal device during the first time period.

22. The method according to any one of claims 17 to 19, characterized in that The second resource is activated after sending at least one of the first signals.

23. The method according to any one of claims 17 to 22, characterized in that After the first resource and the second resource are activated, if the terminal device does not receive the second signal within a second time period, the second resource is deactivated.

24. The method according to any one of claims 17 to 22, characterized in that After the terminal device sends the first signal, the terminal device receives feedback information from the network device, and the first resource is deactivated.

25. The method according to any one of claims 17 to 22, characterized in that After the network device sends the second signal and receives feedback information from the terminal device, the first resource and the second resource are deactivated.

26. The method according to any one of claims 17 to 22, characterized in that The method further comprises: Second indication information is sent according to the quality of the downlink signal, where the second indication information is used to instruct deactivation of the first resource and the second resource.

27. The method according to any one of claims 17 to 26, characterized in that The first signal or the second signal is associated with an identifier of the terminal device.

28. A communication device, characterized in that: Comprising means for performing the method of any one of claims 1 to 16 or 17 to 27.

29. A communication device, characterized in that: The device comprises a processor coupled to a memory, the memory being used to store a computer program or instructions, and the processor being used to execute the computer program or instructions in the memory, so that the device performs the method as claimed in any one of claims 1 to 16, or performs the method as claimed in any one of claims 17 to 27.

30. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program or instruction, and when the computer program or instruction is executed on a computer, the computer executes the method according to any one of claims 1 to 16, or executes the method according to any one of claims 17 to 27.

31. 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 the method described in any one of claims 1 to 16, or executes the method described in any one of claims 17 to 27.

32. A computer program product, characterized in that When the computer program product is run on a computer, the computer is enabled to execute the steps of the method according to any one of claims 1 to 16, or to execute the steps of the method according to any one of claims 17 to 27.

Images