Paging method and paging device

Abstract

The invention provides a paging method and a paging device, and the paging method comprises the steps that network equipment indicates an identifier of terminal equipment in one or more tracking areas TA to the terminal equipment, and carries the identifier of the terminal equipment in the one or more tracking areas TA in a paging message when the terminal equipment is paged. According to the method provided by the embodiment of the invention, the number of users in one or more tracking areas TA is limited, so that the number of bits of the identification information for identifying different terminal devices in the one or more tracking areas TA is greatly reduced, the number of bits in the paging message can be reduced, the demodulation threshold of the terminal device can be reduced, and the paging success rate is improved.

Description

Technical Field

[0001] The present application relates to the field of communication technology, and more specifically, to a paging method and a paging device. Background Art

[0002] When the access network device needs to communicate with the terminal device, the network device can send a paging message to the terminal device to enable the terminal device to access the network. When the network device is far away from the terminal device, the power of the network device to send messages is limited and the link budget is limited. Therefore, the signal to interference plus noise ratio (SINR) of the signal received by the terminal device is low, resulting in the problem that the terminal device cannot demodulate the signal, which seriously affects the service experience of the terminal device. Summary of the invention

[0003] The present application provides a paging method and device, which can improve the paging success rate.

[0004] In the first aspect, a paging method is provided, which can be executed by a first terminal device, or by a module (such as a chip or circuit) in the first terminal device, or by a logical node, logical module or software that can implement all or part of the functions of the first terminal device, and the present application does not limit this.

[0005] The method includes: the first terminal device receives first information from a network device, the first information is used to indicate a first identifier of the first terminal device in a first area, the first area is one or more tracking areas TA; the first terminal device receives a first paging message from the network device, the first paging message includes the above-mentioned first identifier.

[0006] Specifically, the above-mentioned first terminal device receives the first paging message from the network device, including: the first terminal device receives the first DCI from the network device at the first paging opportunity, and the first DCI is used to schedule the transmission resources of the first physical downlink shared channel PDSCH carrying the first paging message; the first terminal device receives the first paging message from the network device at the transmission resources of the first PDSCH.

[0007] It should be understood that when the first terminal device moves out of the first area, it is necessary to reallocate an identifier for the first terminal device. When the first area is a TA, more terminal devices may be allocated identifiers within the first area; when the first area is multiple TAs, it is not necessary to reallocate an identifier for the first terminal device when the first terminal device moves within the multiple TAs.

[0008] Through the above method, since the number of users in the first area is limited, the number of bits of identification information used to identify different terminal devices in the first area is greatly reduced, which can reduce the number of bits in the paging message, thereby reducing resource overhead. For the first terminal device, fewer information bits in the paging message can reduce the demodulation threshold of the terminal device and improve the paging success rate.

[0009] In combination with the first aspect, in some implementations of the first aspect, the method further includes: when the first condition is met, the first terminal device receives a second paging message from the network device.

[0010] The above-mentioned first condition is that the signal quality of the current cell where the first terminal device is located is lower than the first threshold, and / or the above-mentioned first condition is that the first terminal device has not monitored the PDCCH used for paging within the first time period; or, the above-mentioned first condition is that the first terminal device monitors the PDCCH used for paging but cannot correctly demodulate the PDSCH carrying the above-mentioned first paging message.

[0011] The above-mentioned first terminal device receives the second paging message from the network device, including: the first terminal device receives the second DCI from the network device at the second paging opportunity, and the second DCI is used to schedule the transmission resources of the second PDSCH carrying the second paging message; the first terminal device receives the second paging message from the network device at the transmission resources of the second PDSCH.

[0012] By the above method, when the first terminal device cannot receive the first paging message in an area with poor signal, the first terminal device receives the second paging message when it determines that a certain condition is met. After receiving the second paging message, the first terminal device can move to an area with better signal to access the network.

[0013] Specifically, the first terminal device receives a first DCI for scheduling a first paging message at a first paging occasion, and receives a second DCI for scheduling a second paging message at a second paging occasion, and the first paging occasion is different from the second paging occasion.

[0014] In combination with the first aspect, in certain implementations of the first aspect, the method further includes: the first terminal device receives first configuration information and second configuration information, the first configuration information is configuration information related to the first paging message, and the second configuration information is configuration information related to the second paging message.

[0015] Specifically, the first configuration information and the second configuration information include parameter information such as paging cycle (DRX cycle), offset of paging frame in paging cycle, starting position of paging occasion, etc. The parameter value of the first configuration information is different from the parameter value of the second configuration information.

[0016] Optionally, the first configuration information and the second configuration information may be broadcast via a paging control channel (PCCH)-configuration information (Config) in a system information block (SIB).

[0017] Specifically, the second paging message may include at least one of the first identification of the first terminal device or an international mobile user identification IMSI or a temporary mobile user identification TMSI or a radio network temporary identification RNTI.

[0018] On the second aspect, a paging method is provided, which can be executed by a first terminal device, or by a module (such as a chip or circuit) in the first terminal device, or by a logical node, logical module or software that can implement all or part of the functions of the first terminal device, and the present application does not limit this.

[0019] The method includes: when a first condition is met, the first terminal device receives a second paging message from the network device.

[0020] The above-mentioned first condition is that the signal quality of the current cell where the first terminal device is located is lower than the first threshold, and / or the above-mentioned first condition is that the first terminal device has not monitored the PDCCH used for paging within the first time period; or, the above-mentioned first condition is that the first terminal device monitors the PDCCH used for paging but cannot correctly demodulate the PDSCH carrying the first paging message.

[0021] Specifically, the above-mentioned first terminal device receives the second paging message from the network device, including: the first terminal device receives the second DCI from the network device at the second paging opportunity, and the second DCI is used to schedule the transmission resources of the second physical downlink shared channel PDSCH carrying the second paging message; the first terminal device receives the second paging message from the network device at the transmission resources of the second PDSCH.

[0022] By the above method, when the first terminal device cannot receive the first paging message in an area with poor signal, the first terminal device receives the second paging message when it determines that a certain condition is met. After receiving the second paging message, the first terminal device is advantageously moved to an area with better signal to access the network.

[0023] Specifically, the first terminal device receives a first DCI for scheduling a first paging message at a first paging occasion, and receives a second DCI for scheduling a second paging message at a second paging occasion, and the first paging occasion is different from the second paging occasion.

[0024] In combination with the second aspect, in certain implementations of the second aspect, the method further includes: the first terminal device receives first configuration information and second configuration information, the first configuration information is configuration information related to the first paging message, and the second configuration information is configuration information related to the second paging message.

[0025] Specifically, the first configuration information and the second configuration information include parameter information such as paging cycle (DRX cycle), offset of paging frame in paging cycle, starting position of paging occasion, etc. The parameter value of the first configuration information is different from the parameter value of the second configuration information.

[0026] Optionally, the first configuration information and the second configuration information may be broadcast via PCCH-Config in SIB.

[0027] In combination with the second aspect, in certain implementations of the second aspect, the first paging message and the second paging message include at least one of the first identifier of the first terminal device in the first area, the IMSI of the first terminal device, the TMSI of the first terminal device, or the RNTI of the first terminal device, and the first area is one or more tracking areas TA.

[0028] It should be understood that when the first terminal device moves out of the first area, it is necessary to reallocate an identifier for the first terminal device. When the first area is a TA, more terminal devices may be allocated identifiers within the first area; when the first area is multiple TAs, it is not necessary to reallocate an identifier for the first terminal device when the first terminal device moves within the multiple TAs.

[0029] Through the above method, since the number of users in the first area is limited, the number of bits of identification information used to identify different terminal devices in the first area is greatly reduced, which can reduce the number of bits in the paging message, thereby reducing resource overhead. For the first terminal device, fewer information bits in the paging message can reduce the demodulation threshold of the terminal device and improve the paging success rate.

[0030] On the third aspect, a paging method is provided, which can be executed by a network device, or by a module (such as a chip or circuit) in the network device, or by a logical node, logical module or software that can implement all or part of the functions of the network device, and the present application does not limit this.

[0031] The method includes: a network device sends first information to a first terminal device, the first information is used to indicate a first identifier of the first terminal located in a first area, the first area is one or more tracking areas TA; the network device sends a first paging message to the first terminal device, the first paging message includes the above-mentioned first identifier.

[0032] Specifically, the above-mentioned network device sends a first paging message to the first terminal device, including: the network device sends a first DCI to the first terminal device at a first paging opportunity, and the first DCI is used to schedule the transmission resources of the first physical downlink shared channel PDSCH carrying the first paging message; the network device sends the first paging message to the first terminal device at the transmission resources of the first PDSCH.

[0033] It should be understood that when the first terminal device moves out of the first area, it is necessary to reallocate an identifier for the first terminal device. When the first area is a TA, the network device can allocate identifiers within the first area to more terminal devices; when the first area is multiple TAs, the network device does not need to reallocate an identifier for the first terminal device when the first terminal device moves within the multiple TAs.

[0034] Through the above method, since the number of users in the first area is limited, the number of bits of identification information used to identify different terminal devices in the first area is greatly reduced, which can reduce the number of bits in the paging message, thereby reducing resource overhead. For the first terminal device, fewer information bits in the paging message can reduce the demodulation threshold of the terminal device and improve the paging success rate.

[0035] In combination with the third aspect, in certain implementations of the third aspect, when the network device fails to page the first terminal device N times, the method further includes: the network device sends a second paging message to the first terminal device.

[0036] The above-mentioned network device sends the second paging message to the first terminal device, including: the network device sends a second DCI to the first terminal device at the second paging opportunity, and the second DCI is used to schedule the transmission resources of the second PDSCH carrying the second paging message; the network device sends the second paging message to the first terminal device at the transmission resources of the second PDSCH.

[0037] By the above method, when the network device fails to page the first terminal device in the area with poor signal through the first paging message, the network device pages the first terminal device through the second paging message. After receiving the second paging message, the first terminal device can move to an area with better signal to access the network.

[0038] Specifically, the network device sends a first DCI for scheduling a first paging message at a first paging occasion, and sends a second DCI for scheduling a second paging message at a second paging occasion, and the first paging occasion is different from the second paging occasion.

[0039] In combination with the third aspect, in certain implementations of the third aspect, the method further includes: the network device sends first configuration information and second configuration information to the first terminal device, the first configuration information is configuration information related to the first paging message, and the second configuration information is configuration information related to the second paging message.

[0040] Specifically, the first configuration information and the second configuration information include parameter information such as paging cycle (DRX cycle), offset of paging frame in paging cycle, starting position of paging occasion, etc. The parameter value of the first configuration information is different from the parameter value of the second configuration information.

[0041] Optionally, the first configuration information and the second configuration information may be broadcast via a paging control channel (PCCH)-configuration information (Config) in a system information block (SIB).

[0042] Specifically, the second paging message may include at least one of the first identification of the first terminal device or an international mobile user identification IMSI or a temporary mobile user identification TMSI or a radio network temporary identification RNTI.

[0043] In combination with the third aspect, in certain implementations of the third aspect, the method further includes: the network device sends a third paging message at a third paging opportunity, the third paging message includes a second identifier, the second identifier is used to identify the terminal device to be paged at the third paging opportunity, the terminal device to be paged is the first terminal device or the second terminal device, and the third paging opportunity is associated with the first terminal device and the second terminal device.

[0044] Specifically, if the network device pages the first terminal device at the third paging opportunity, the second identifier is used to identify the first terminal device at the third paging opportunity; if the network device pages the second terminal device at the third paging opportunity, the second identifier is used to identify the second terminal device at the third paging opportunity.

[0045] Specifically, the third paging opportunity may be associated with the first terminal device and the second terminal device in the following manner: if the network device needs to page the first terminal device and / or the second terminal device, the network device sends the third paging message to the first terminal device and / or the second terminal device at the third paging opportunity.

[0046] Through the above method, the terminal device identifier is used to distinguish different terminal devices at the same paging time, and the number of terminal devices at the same paging time is limited, the number of bits of the terminal device identifier information is greatly reduced, and the number of bits in the paging message can be reduced, thereby reducing resource overhead. For the first terminal device, fewer information bits in the paging message can reduce the demodulation threshold of the terminal device and improve the paging success rate.

[0047] In a fourth aspect, a paging method is provided, which can be executed by a network device, or by a module (such as a chip or circuit) in the network device, or by a logical node, logical module or software that can implement all or part of the functions of the network device, and the present application does not limit this.

[0048] The method comprises: a network device paging at least one terminal device; when the network device fails to page the first terminal device N times, the network device sends a second paging message to the first terminal device.

[0049] Specifically, the above-mentioned network device sends the second paging message to the first terminal device, including: the network device sends a second DCI to the first terminal device at the second paging opportunity, and the second DCI is used to schedule the transmission resources of the second PDSCH carrying the second paging message; the network device sends the second paging message to the first terminal device at the transmission resources of the second PDSCH.

[0050] By the above method, when the network device fails to page the first terminal device in the area with poor signal through the first paging message, the network device pages the first terminal device through the second paging message. After receiving the second paging message, the first terminal device can move to an area with better signal to access the network.

[0051] Specifically, the network device sends a first DCI for scheduling a first paging message at a first paging occasion, and sends a second DCI for scheduling a second paging message at a second paging occasion, and the first paging occasion is different from the second paging occasion.

[0052] In combination with the fourth aspect, in certain implementations of the fourth aspect, the method further includes: the network device sends first configuration information and second configuration information to the first terminal device, the first configuration information is configuration information related to the first paging message, and the second configuration information is configuration information related to the second paging message.

[0053] Specifically, the first configuration information and the second configuration information include parameter information such as paging cycle (DRX cycle), offset of paging frame in paging cycle, starting position of paging occasion, etc. The parameter value of the first configuration information is different from the parameter value of the second configuration information.

[0054] Optionally, the first configuration information and the second configuration information may be broadcast via PCCH-Config in SIB.

[0055] In combination with the fourth aspect, in certain implementations of the fourth aspect, the first paging message and the second paging message include at least one of the first identifier of the first terminal device in the first area, the IMSI of the first terminal device, the TMSI of the first terminal device, or the RNTI of the first terminal device, and the first area is one or more tracking areas TA.

[0056] It should be understood that when the first terminal device moves out of the first area, it is necessary to reallocate an identifier for the first terminal device. When the first area is a TA, more terminal devices may be allocated identifiers within the first area; when the first area is multiple TAs, it is not necessary to reallocate an identifier for the first terminal device when the first terminal device moves within the multiple TAs.

[0057] Through the above method, since the number of users in the first area is limited, the number of bits of identification information used to identify different terminal devices in the first area is greatly reduced, which can reduce the number of bits in the paging message, thereby reducing resource overhead. For the first terminal device, fewer information bits in the paging message can reduce the demodulation threshold of the terminal device and improve the paging success rate.

[0058] In combination with the fourth aspect, in certain implementations of the fourth aspect, the method further includes: the network device sends a third paging message at a third paging opportunity, the third paging message includes a second identifier, the second identifier is used to identify the terminal device to be paged at the third paging opportunity, the terminal device to be paged is the first terminal device or the second terminal device, and the third paging opportunity is associated with the first terminal device and the second terminal device.

[0059] Specifically, if the network device pages the first terminal device at the third paging opportunity, the second identifier is used to identify the first terminal device at the third paging opportunity; if the network device pages the second terminal device at the third paging opportunity, the second identifier is used to identify the second terminal device at the third paging opportunity.

[0060] Specifically, the third paging opportunity may be associated with the first terminal device and the second terminal device in the following manner: if the network device needs to page the first terminal device and / or the second terminal device, the network device sends the third paging message to the first terminal device and / or the second terminal device at the third paging opportunity.

[0061] Through the above method, the terminal device identifier is used to distinguish different terminal devices at the same paging time, and the number of terminal devices at the same paging time is limited, the number of bits of the terminal device identifier information is greatly reduced, and the number of bits in the paging message can be reduced, thereby reducing resource overhead. For the first terminal device, fewer information bits in the paging message can reduce the demodulation threshold of the terminal device and improve the paging success rate.

[0062] In the fifth aspect, a paging device is provided, which includes: a transceiver unit for receiving first information from a network device, the first information being used to indicate a first identifier of the device within a first area, the first area being one or more tracking areas TA; the above-mentioned transceiver unit is also used to receive a first paging message from the network device, the first paging message including the above-mentioned first identifier.

[0063] In combination with the fifth aspect, in certain implementations of the fifth aspect, the transceiver unit is further configured to receive a second paging message from the network device when the first condition is met.

[0064] The above-mentioned first condition is that the signal quality of the current cell where the first terminal device is located is lower than the first threshold, and / or the above-mentioned first condition is that the first terminal device has not monitored the PDCCH used for paging within the first time period; or, the above-mentioned first condition is that the first terminal device monitors the PDCCH used for paging but cannot correctly demodulate the PDSCH carrying the above-mentioned first paging message.

[0065] In combination with the fifth aspect, in certain implementations of the fifth aspect, the above-mentioned transceiver unit is also used to receive first configuration information and second configuration information, the first configuration information is configuration information related to the above-mentioned first paging message, and the second configuration information is configuration information related to the second paging message.

[0066] Specifically, the second paging message may include at least one of the first identification of the first terminal device or an international mobile user identification IMSI or a temporary mobile user identification TMSI or a radio network temporary identification RNTI.

[0067] The explanation and beneficial effects of the paging device related contents provided in the fifth aspect can all be referred to the paging method shown in the first aspect, and will not be repeated here.

[0068] In a sixth aspect, a paging device is provided, the device comprising: a transceiver unit, configured to receive a second paging message from a network device when a first condition is met.

[0069] The above-mentioned first condition is that the signal quality of the current cell where the above-mentioned device is located is lower than the first threshold, and / or the above-mentioned first condition is that the above-mentioned device does not monitor the PDCCH used for paging within the first time period; or the above-mentioned first condition is that the above-mentioned device monitors the PDCCH used for paging but cannot correctly demodulate the PDSCH carrying the first paging message.

[0070] In combination with the sixth aspect, in certain implementations of the sixth aspect, the above-mentioned transceiver unit is also used to receive first configuration information and second configuration information, the first configuration information is configuration information related to the above-mentioned first paging message, and the second configuration information is configuration information related to the second paging message.

[0071] In combination with the sixth aspect, in certain implementations of the sixth aspect, the first paging message and the second paging message include at least one of the first identifier of the device in the first area, the IMSI of the device, the TMSI of the device, or the RNTI of the device, and the first area is one or more tracking areas TA.

[0072] The explanation and beneficial effects of the paging device related contents provided in the sixth aspect can refer to the paging method shown in the second aspect, and will not be repeated here.

[0073] In the seventh aspect, a paging device is provided, which includes: a transceiver unit for sending first information to a first terminal device, the first information being used to indicate a first identifier of the first terminal located in a first area, the first area being one or more tracking areas TA; the transceiver unit is also used to send a first paging message to the first terminal device, the first paging message including the above-mentioned first identifier.

[0074] In combination with the seventh aspect, in certain implementations of the seventh aspect, when the apparatus fails to page the first terminal device N times, the transceiver unit is further used to send a second paging message to the first terminal device.

[0075] In combination with the seventh aspect, in certain implementations of the seventh aspect, the above-mentioned transceiver unit is also used to send first configuration information and second configuration information to the first terminal device, the first configuration information is configuration information related to the above-mentioned first paging message, and the second configuration information is configuration information related to the second paging message.

[0076] Specifically, the second paging message may include at least one of the first identification of the first terminal device or an international mobile user identification IMSI or a temporary mobile user identification TMSI or a radio network temporary identification RNTI.

[0077] In combination with the seventh aspect, in certain implementations of the seventh aspect, the above-mentioned transceiver unit is also used to send a third paging message at a third paging opportunity, and the third paging message includes a second identifier, and the second identifier is used to identify the terminal device to be paged at the third paging opportunity. The terminal device to be paged is the above-mentioned first terminal device or the second terminal device, and the third paging opportunity is associated with the above-mentioned first terminal device and the above-mentioned second terminal device.

[0078] The explanation and beneficial effects of the paging device provided in the seventh aspect can refer to the paging method shown in the third aspect, and will not be repeated here.

[0079] In an eighth aspect, a paging device is provided, the device comprising: a transceiver unit, configured to send a second paging message to the first terminal device when the device fails to page the first terminal device N times.

[0080] In combination with the eighth aspect, in certain implementations of the eighth aspect, the above-mentioned transceiver unit is also used to send first configuration information and second configuration information to the first terminal device, the first configuration information is configuration information related to the above-mentioned first paging message, and the second configuration information is configuration information related to the second paging message.

[0081] In combination with the eighth aspect, in certain implementations of the eighth aspect, the first paging message and the second paging message include at least one of the first identifier of the first terminal device in the first area, the IMSI of the first terminal device, the TMSI of the first terminal device, or the RNTI of the first terminal device, and the first area is one or more tracking areas TA.

[0082] In combination with the eighth aspect, in certain implementations of the eighth aspect, the above-mentioned transceiver unit is also used to send a third paging message at a third paging opportunity, and the third paging message includes a second identifier, and the second identifier is used to identify the terminal device to be paged at the third paging opportunity. The terminal device to be paged is the above-mentioned first terminal device or the second terminal device, and the third paging opportunity is associated with the above-mentioned first terminal device and the above-mentioned second terminal device.

[0083] The explanation and beneficial effects of the paging device related contents provided in the eighth aspect can refer to the paging method shown in the fourth aspect, and will not be repeated here.

[0084] In a ninth aspect, a communication device is provided, comprising a processor, wherein the processor is used to, by executing a computer program or instruction or through a logic circuit, enable the communication device to perform the method described in the first aspect and any possibility of the first aspect; or enable the communication device to perform the method described in the second aspect and any possibility of the second aspect; enable the communication device to perform the method described in the third aspect and any possibility of the third aspect; or enable the communication device to perform the method described in the fourth aspect and any possibility of the fourth aspect.

[0085] In a possible implementation, the communication device further includes a memory for storing the computer program or instruction.

[0086] In a possible implementation manner, the communication device further includes a communication interface, which is used to input and / or output signals.

[0087] In the tenth aspect, a communication device is provided, comprising a logic circuit and an input / output interface, the input / output interface being used to input and / or output signals, the logic circuit being used to execute the method described in the first aspect and any possibility of the first aspect; or, the logic circuit being used to execute the method described in the second aspect and any possibility of the second aspect; the logic circuit being used to execute the method described in the third aspect and any possibility of the third aspect; or, the logic circuit being used to execute the method described in the fourth aspect and any possibility of the fourth aspect.

[0088] In the eleventh aspect, a computer-readable storage medium is provided, on which a computer program or instruction is stored. When the computer program or the instruction is run on a computer, the method described in the first aspect and any possibility of the first aspect is executed; or, the method described in the second aspect and any possibility of the second aspect is executed; the method described in the third aspect and any possibility of the third aspect is executed; or, the method described in the fourth aspect and any possibility of the fourth aspect is executed.

[0089] In the twelfth aspect, a computer program product is provided, comprising instructions, which, when executed on a computer, cause the method described in the first aspect and any possibility of the first aspect to be executed; or, cause the method described in the second aspect and any possibility of the second aspect to be executed; cause the method described in the third aspect and any possibility of the third aspect to be executed; or, cause the method described in the fourth aspect and any possibility of the fourth aspect to be executed.

[0090] In the thirteenth aspect, a communication system is provided, which includes the above-mentioned first terminal device and the above-mentioned network device, the first terminal device is used to execute the method described in the above-mentioned first aspect, the second aspect, and any possible one of the first aspect and the second aspect, and the network device is used to execute the method described in the above-mentioned third aspect, the fourth aspect, and any possible one of the third aspect and the fourth aspect.

[0091] For the description of the beneficial effects of the fifth to thirteenth aspects, reference can be made to the description of the first to fourth aspects. BRIEF DESCRIPTION OF THE DRAWINGS

[0092] Figure 1 It is a schematic diagram of an example of a communication system 100 applicable to an embodiment of the present application.

[0093] Figure 2 It is a schematic diagram of a satellite communication system applicable to an embodiment of the present application.

[0094] Figure 3 It is a schematic diagram of a paging frame and a paging opportunity applicable to an embodiment of the present application.

[0095] Figure 4 It is a schematic flow chart of a paging method 400 applicable to an embodiment of the present application.

[0096] Figure 5 It is a schematic flow chart of a paging method 500 applicable to an embodiment of the present application.

[0097] Figure 6 It is a schematic diagram of a sequence indication applicable to an embodiment of the present application.

[0098] Figure 7 It is a schematic flow chart of a paging method 700 applicable to an embodiment of the present application.

[0099] Figure 8 It is a schematic block diagram of an example of a communication device 800 applicable to an embodiment of the present application.

[0100] Fig. 9 It is a schematic block diagram of an example of a communication device 900 applicable to an embodiment of the present application.

[0101] Fig.10 It is a schematic block diagram of an example of a communication device 1000 applicable to an embodiment of the present application. DETAILED DESCRIPTION

[0102] In order to facilitate understanding of the embodiments of the present application, the following points are first explained.

[0103] 1. In this application, unless otherwise specified, "plurality" means two or more.

[0104] 2. In this application, unless otherwise specified or there is a logical conflict, the terms and / or descriptions between different embodiments are consistent and can be referenced to each other. The technical features in different embodiments can be combined to form new embodiments according to their internal logical relationships.

[0105] 3. The various digital numbers involved in this application are only used for the convenience of description and are not used to limit the scope of protection of this application. The size of the serial numbers involved in this application does not mean the order of execution. The execution order of each process should be determined by its function and internal logic. For example, the terms "first", "second", "third", "fourth" and other various terminology labels (if any) in the specification and claims and drawings of this application are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. Among them, the data used in this way can be interchangeable where appropriate, so that the embodiments described here can be implemented in an order other than what is illustrated or described here.

[0106] At the same time, any embodiment or design described in the present application as "exemplary" or "for example" should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a concrete manner for ease of understanding.

[0107] 4. The terms "comprise", "include", "have" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or apparatus comprising a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such process, method, product or apparatus.

[0108] 5. In this application, "preset" may include pre-definition, for example, protocol definition. Among them, "pre-definition" can be implemented by pre-saving corresponding codes, tables or other methods that can be used to indicate relevant information in the device, and this application does not limit its specific implementation method.

[0109] 6. The term "storage" or "saving" as used in this application may refer to saving in one or more memories. The one or more memories may be provided separately or integrated in an encoder or decoder, a processor, or a communication device. The one or more memories may also be partially provided separately and partially integrated in a decoder, a processor, or a communication device. The type of memory may be any form of storage medium, which is not limited thereto.

[0110] 7. In this application, unless otherwise specified, “ / ” indicates that the objects associated with each other are in an “or” relationship. For example, A / B can represent A or B. “And / or” in this application is only a description of the association relationship between the associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone, where A and B can be singular or plural.

[0111] First, a communication system to which the embodiments of the present application are applicable is described.

[0112] The technical solution provided in this application can be applied to various communication systems, such as: the 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, universal mobile telecommunication system (universal mobile telecommunication system, UMTS), etc. The technical solution provided in this application can also be applied to future communication systems, such as the sixth generation (6th generation, 6G) 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), Internet of things (IoT) communication system, non-terrestrial network (NTN) communication system or other communication systems.

[0113] As an example, Figure 1 A schematic architecture diagram of a communication system is shown. Exemplarily, the architecture may include terminal equipment, access network (AN) equipment, core network (CN), external network, etc. Among them, the external network may be a data network (DN), and the access network equipment refers to the radio access network (RAN) equipment provided in this application.

[0114] Terminal equipment: can be called user equipment (UE), access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or user device. The terminal equipment of the present application can also be a handheld device with wireless connection function, a vehicle-mounted device, etc. At present, some examples of terminal devices are: mobile phones, tablet computers, laptop computers, PDAs, mobile internet devices (MID), virtual reality (VR) devices, augmented reality (AR) devices, wireless terminals in industrial control, wireless terminals in self driving, wireless terminals in remote medical surgery, wireless terminals in smart grids, wireless terminals in transportation safety, wireless terminals in smart cities, wireless terminals in smart homes, cellular phones, cordless phones, session initiation protocol (SIP) phones, wireless local loop (WLL) stations, personal digital assistants (PDAs), handheld devices with wireless communication functions, computing devices or other processing devices connected to wireless modems, wearable devices, terminal devices in 5G networks or future evolved public land mobile communication networks (public land mobile communication networks) Mobile network, PLMN) and the like, the embodiments of the present application are not limited to this.

[0115] As an example but not limitation, in the embodiments of the present application, the terminal device may also be a wearable device. Wearable devices may also be referred to as wearable smart devices, which are a general term for wearable devices that are intelligently designed and developed using wearable technology for daily wear, such as glasses, gloves, watches, clothing, and shoes. A wearable device is a portable device that is worn directly on the body or integrated into the user's clothes or accessories. Wearable devices are not only hardware devices, but also powerful functions achieved through software support, data interaction, and cloud interaction. Broadly speaking, wearable smart devices include full-featured, large-sized, and fully or partially independent of smartphones, such as smart watches or smart glasses, as well as devices that only focus on a certain type of application function and need to be used in conjunction with other devices such as smartphones, such as various types of smart bracelets and smart jewelry for vital sign monitoring.

[0116] It should be noted that the terminal device and the access network device may communicate with each other using a certain air interface technology (such as but not limited to NR or LTE technology, etc.). The terminal devices may also communicate with each other using a certain air interface technology (such as but not limited to NR or LTE technology, etc.).

[0117] In the embodiment of the present application, the device for realizing the function of the terminal device can be the terminal device, or it can be a device that can support the terminal device to realize the function, such as a chip system or a chip, which can be installed in the terminal device. In the embodiment of the present application, the chip system can be composed of a chip, or it can include a chip and other discrete devices.

[0118] Access network equipment: It can also be called RAN node, RAN equipment, etc. RAN can provide authorized users in a specific area with the function of accessing the communication network. Access network equipment can specifically include wireless network equipment in the 3rd generation partnership project (3GPP) network, and can also include access points in non-3GPP networks. For the convenience of description, the following uses access network (AN) equipment to represent it.

[0119] Access network equipment can use different wireless access technologies. There are currently two types of wireless access technologies: 3GPP access technology (for example, the wireless access technology used in the third generation (3rd generation, 3G), fourth generation (4th generation, 4G) or 5G systems) and non-3GPP (non-3GPP) access technology. 3GPP access technology refers to access technology that complies with 3GPP standards and specifications. For example, the access network equipment in the 5G system is called the next generation NodeBase station (gNB) node or RAN equipment. Non-3GPP access technology may include air interface technology represented by access points (AP) in wireless fidelity (WiFi), worldwide interoperability for microwave access (WiMAX), code division multiple access (CDMA), etc. Access network equipment can allow terminal devices and 3GPP core networks to interconnect and communicate using non-3GPP technologies.

[0120] Access network equipment is responsible for wireless resource management, quality of service (QoS) management, data compression and encryption, etc. on the air interface side. Access network equipment provides access services for terminal devices, and then completes the forwarding of control signals and user data between terminal devices and the core network.

[0121] The access network equipment may include, for example, but is not limited to: macro base stations, micro base stations (also called small stations), radio network controllers (RNCs), node Bs (NBs), base station controllers (BSCs), base transceiver stations (BTSs), home base stations (e.g., home evolved NodeBs, or home Node Bs, HNBs), baseband units (BBUs), APs in WiFi systems, wireless relay nodes, wireless backhaul nodes, transmission points (TPs) or transmission and reception points (TRPs), etc., and may also be gNBs or transmission points (TRPs or TPs) in 5G (e.g., NR) systems, one or a group of antenna panels (including multiple antenna panels) of a base station in a 5G system, or network nodes constituting gNBs or transmission points, such as distributed units (DUs), or base stations in next-generation communication 6G systems, etc. The embodiments of the present application do not limit the specific technology and specific device form used by the AN equipment.

[0122] Core network: responsible for 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 control plane and data plane. The access and mobility management function (AMF) network element is responsible for user access management and control, user security authentication and mobility management. The user plane function (UPF) network element is responsible for managing the transmission of user plane data, traffic statistics and other functions. The session management function (SMF) network element is mainly responsible for the control plane function of user session management.

[0123] When the access network device needs to communicate with the terminal device, the access network device can send a paging message to the terminal device so that the terminal device can access the network. When the access network device is far away from the terminal device, the power of the access network device to send messages is limited and the link budget is limited. Therefore, the signal to interference plus noise ratio (SINR) of the signal received by the terminal device is low, resulting in the problem that the terminal device cannot demodulate the signal, which seriously affects the service experience of the terminal device.

[0124] Exemplarily, the scenario where the access network device is far away from the terminal device may be the above-mentioned NTN scenario, and the above-mentioned NTN scenario includes satellite communication. The satellite communication system includes a satellite base station and a terminal device. The satellite base station provides communication services for the terminal device. The satellite base station can also communicate with the ground base station. The satellite can be used as a base station or as a terminal device. The satellite can refer to non-ground base stations or non-ground devices such as drones, hot air balloons, low-orbit satellites, medium-orbit satellites, and high-orbit satellites.

[0125] For example, Figure 2 Schematic diagram of a satellite communication system applicable to an embodiment of the present application. Taking the 5G network as an example, the terminal equipment on the ground accesses the network through the 5G new air interface, and the 5G access network equipment is deployed on the satellite and connected to the core network on the ground 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 5G access network equipment and the 5G access network equipment. Figure 2 The various network elements and the interfaces between them are described as follows:

[0126] 5G New Air Interface: The wireless link between terminal devices and 5G access network equipment.

[0127] 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. For details, please refer to the description of the terminal device above.

[0128] 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.

[0129] 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 control plane and data plane. AMF network element is responsible for user access management and control, user security authentication and mobility management. UPF network element is responsible for managing user plane data transmission, traffic statistics and other functions. SMF network element is mainly responsible for the control plane function of terminal device session management.

[0130] Ground station: responsible for forwarding signaling and service data between 5G access network equipment and 5G core network.

[0131] Xn interface: The interface between 5G access network devices, mainly used for signaling interaction such as switching.

[0132] NG interface: The interface between 5G access network equipment and 5G core network, which mainly interacts with the signaling of the non-access stratum (NAS) of the core network and the user's business data.

[0133] It should be noted that the technical solution of the present application can also be applied to other NTN scenarios where the access network equipment and the terminal equipment are far away. Figure 2 Satellite communication scenario shown.

[0134] The existing paging process will be described below.

[0135] Figure 3 3 is a schematic flow chart of an existing paging method 300. Figure 3 As shown, the execution subject of the paging method 300 includes a terminal device and an access network device. The paging method 300 includes:

[0136] Step S310: The access network device sends downlink control information (DCI) scrambled by a paging radio network temporary identifier (P-RNTI) to the terminal device. Correspondingly, the terminal device receives the DCI scrambled by the P-RNTI from the access network device.

[0137] For a terminal device in an idle state, the terminal device needs to wake up periodically and monitor the P-RNTI-encrypted physical downlink control channel (PDCCH), and parse the DCI carried by the PDCCH. Among them, the P-RNTI-encrypted DCI can be used to indicate short messages to the terminal device, and can also be used to schedule the transmission resources of the physical downlink shared channel (PDSCH) carrying paging messages.

[0138] Specifically, the terminal device can determine that the received P-RNTI-scrambled DCI is a paging indication, and can also determine the transmission resources of the PDSCH for receiving the paging message based on the P-RNTI-scrambled DCI.

[0139] Step S320: the access network device sends a paging message to the terminal device. Correspondingly, the terminal device receives the paging message from the access network device.

[0140] The terminal device can determine the transmission resource of the PDSCH for receiving the paging message according to the P-RNTI-scrambled DCI it has received, and receive the paging message from the access network device at the transmission resource of the PDSCH.

[0141] Furthermore, the terminal device can parse and obtain the content of the paging message. The paging message includes a paging record list (PagingRecordlist). If the identifier of the terminal device is included in the paging record list, it means that the access network device pages the terminal device.

[0142] From the above, the terminal device and the access network device complete the paging process.

[0143] To put it more concretely, paging is a process of searching for or waking up a terminal device. The paging process can be divided into two categories: the paging process triggered by the core network (CN) and the paging process triggered by the access network device. The following mainly introduces the paging process triggered by the core network.

[0144] The paging message triggered by the core network needs to be sent to the terminal device through the access network device. For example, the core network sends the paging message to the access network device through the NG interface, and the access network device then sends it to the terminal device.

[0145] Whether it is LTE or NR system, the paging message triggered by the core network is sent to the terminal device by the access network device through PDSCH. Among them, the transmission resource of PDSCH is indicated to the terminal device by the access network device through PDCCH scrambled by P-RNTI. Therefore, before receiving the paging message, the terminal device needs to monitor the PDCCH channel first, and judge whether there is a paging message sent within the paging cycle based on whether the PDCCH carries the DCI of P-RNTI.

[0146] In order to reduce the power consumption of terminal devices in radio resource control_idle (RRC_IDLE) / radio resource control_inactive (RRC_INACTIVE), the terminal devices will use discontinuous reception (DRX) to receive paging messages. Among them, a DRX cycle includes at least one paging frame (PF). A PF corresponds to at least one paging occasion (PO). The terminal device only needs to wake up once in a DRX cycle to monitor a PO. In addition, the DRX cycle indicates the period in which the terminal device detects paging, PF indicates the system frame in which the terminal device detects paging, and PO indicates the specific PDCCH monitoring occasions (MO) for the terminal device to detect paging.

[0147] The terminal device can calculate and determine the position of PF and PO through relevant formulas. For example,

[0148] PF is a system frame that satisfies the following formula 1:

[0149] (SFN+PF_offset)mod T=(T div N)*(UE_ID mod N) Formula 1

[0150] PO is indicated by the index i_s as shown in Formula 2:

[0151] i_s=floor(UE_ID / N) mod N s Formula 2

[0152] SFN stands for system frame number (SFN). T stands for paging cycle. If DRX is configured, the paging cycle is the DRX cycle. Generally, there is a cell-level T in the system information. c At the same time, there may also be UE-level T UE If no indication is given, UE , then T=T c ; If T is indicated UE , then T=min{T c , T UE}. N represents the total number of PFs in T. N sIndicates the number of POs corresponding to a PF. PF_offset indicates the offset of the PF. Exemplarily, if DRX is configured, the UE_ID indicates the remainder of the 5G-S-temporary mobile subscriber identity (TMSI) mod 4096 of the terminal device; if DRX is not configured, the UE_ID indicates the remainder of the 5G-S-TMSI mod 1024 of the terminal device. Among them, mod is a modulus operation, floor indicates a rounding function, and i_s indicates the index of the PO corresponding to the PF.

[0153] In the NR system, in RRC_IDLE, the 5G-S-TMSI of the terminal device is used as the identifier of the terminal device in the paging message, and the size of the 5G-S-TMSI is about 48 bits; in RRC_INACTIVE, the inactive radio network temporary identifier (I-RNTI) is used as the identifier of the terminal device in the paging message, and the size of the I-RNTI is about 40 bits.

[0154] It is understandable that the access network device can broadcast configuration information related to paging through the paging control channel (PCCH)-configuration information (Config) in the system information block (SIB). For example, the configuration information related to paging may include: paging cycle (DRX cycle), PF offset within the paging cycle, the starting position of PO, etc. Based on the above configuration information and the identification information of the terminal device, the terminal device determines the corresponding PO in each paging cycle.

[0155] for Figure 2 In the satellite communication scenario shown, when the power of the access network device to send paging messages is limited and the link budget is limited, the resource overhead is large when the paging messages are repeatedly enhanced and sent.

[0156] In summary, the present application provides a paging method 400, which can reduce resource overhead when repeatedly enhancing the sending of a paging message.

[0157] The following will be combined with the attached Figure 4 , the paging method 400 provided in an embodiment of the present application is described.

[0158] Figure 4 It is a schematic diagram of the interaction process of the paging method 400 according to an embodiment of the present application. Figure 4The method shown can be executed by a terminal device and a network device, or by a module and / or device (e.g., a chip or an integrated circuit, etc.) with corresponding functions installed in the terminal device and the network device, and this application does not limit this. The network device mentioned below can be the above-mentioned access network device. The following description takes the terminal device and the network device as examples. Figure 4 As shown, the method 400 includes:

[0159] Step S410: The network device sends first information to the first terminal device, where the first information is used to indicate a first identification of the terminal device in the first area. Correspondingly, the first terminal device receives the first information from the network device.

[0160] It should be understood that the above-mentioned first identifier is unique within the above-mentioned first area.

[0161] Specifically, the first area may be one or more tracking areas (TAs). When the first area is a TA, identifiers may be allocated to more terminal devices in the TA; when the first area is multiple TAs, there is no need to re-allocate identifiers to the first terminal device when the first terminal device moves within the multiple TAs.

[0162] Optionally, when the tracking area codes (TAC) of one or more TAs included in the first area all belong to the same access network device, the first identifier of the terminal device is allocated by the access network device; when the TACs of one or more TAs included in the first area do not belong to the same access network device, the first identifier of the terminal device is allocated by the core network device.

[0163] Step S412: The network device sends a first paging message to the first terminal device, where the first paging message includes the first identifier. Correspondingly, the first terminal device receives the first paging message from the network device.

[0164] Specifically, the core network device finds the above-mentioned first area corresponding to the terminal device according to the 5G-S-TMSI of the first terminal device, and sends a first paging message to the terminal device through the access network device corresponding to the first area.

[0165] Specifically, the network device sending the first paging message to the first terminal device may be:

[0166] The above-mentioned network device sends a first DCI encrypted with P-RNTI to the first terminal device. Correspondingly, the terminal device receives the first PDCCH encrypted with P-RNTI and parses the first DCI carried by the first PDCCH. The first DCI encrypted with P-RNTI indicates the transmission resources of the first PDSCH used to send / receive the first paging message. The network device sends the first paging message to the first terminal device at the transmission resources of the first PDSCH, and the first terminal device receives the first paging message from the network device at the transmission resources of the first PDSCH.

[0167] The first terminal device can determine the position of the first paging frame and the first paging opportunity for receiving the first PDCCH through the above formula 1 and the above formula 2, and the network device can determine the position of the first paging frame and the first paging opportunity for sending the first DCI through the above formula 1 and the above formula 2.

[0168] Among them, the first terminal device determines the position of the first paging frame and the first paging opportunity for receiving the first PDCCH according to the above-mentioned first identifier, and the network device determines the position of the first paging frame and the first paging opportunity for sending the first DCI according to the above-mentioned first identifier of the first terminal device, or the first terminal device determines the position of the first paging frame and the first paging opportunity for receiving the first PDCCH according to the 5G-S-TMSI, and the network device determines the position of the first paging frame and the first paging opportunity for sending the first DCI according to the 5G-S-TMSI of the first terminal device, and this application does not limit this. In other words, the identifier of the first terminal device used by the first terminal device to determine the position of the first paging frame and the first paging opportunity for receiving the first PDCCH needs to be consistent with the identifier of the first terminal device used by the network device to determine the position of the first paging frame and the first paging opportunity for sending the first DCI.

[0169] Optionally, before the above step S412, the method further includes step S414, in which the network device sends first configuration information to the first terminal device, where the first configuration information is configuration information related to the above first paging message. Accordingly, the first terminal device receives the first configuration information from the network device.

[0170] Exemplarily, the first configuration information may include: a paging cycle (DRX cycle), an offset of the first paging frame within the paging cycle, a starting position of the first paging opportunity, etc. Based on the first configuration information and the identification information of the first terminal device, the first terminal device determines the first paging opportunity corresponding to each paging cycle.

[0171] Optionally, the first configuration information may be broadcast via PCCH-Config in SIB.

[0172] Since the number of users in the first area is limited, the number of bits used to identify the identification information of different terminal devices in the first area is reduced, which can reduce the number of bits in the paging message. In addition, in a scenario where the network device and the terminal device are far apart, the resource overhead can be reduced when the paging message is repeatedly enhanced and sent. For the terminal device, fewer information bits can reduce the demodulation threshold of the terminal device and improve the paging success rate.

[0173] When some terminal devices move to an area with poor signal and cannot access the network, the present application provides a method 500 for paging the terminal devices. Figure 5 shown. Figure 5 The method shown can be executed by a terminal device and a network device, or by a module and / or device (for example, a chip or an integrated circuit, etc.) with corresponding functions installed in the terminal device and the network device, and this application does not limit this. The following description takes the terminal device and the network device as an example. Figure 5 As shown, the method 500 includes:

[0174] Step S510: The network device sends second configuration information to the first terminal device, where the second configuration information is configuration information related to the second paging message. Accordingly, the first terminal device receives the second configuration information from the network device.

[0175] Exemplarily, the second configuration information may include: a paging cycle (DRX cycle), an offset of the second paging frame within the paging cycle, a starting position of the second paging occasion, and the like.

[0176] Optionally, the second configuration information may be broadcast via PCCH-Config in SIB.

[0177] Step S512: The first terminal device determines the position of receiving the second paging frame and the second paging occasion of the second PDCCH according to the second configuration information.

[0178] The first terminal device can determine the position of the second paging frame and the second paging occasion for receiving the second PDCCH through the above formula 1 and the above formula 2.

[0179] Among them, the first terminal device determines the position of the second paging frame and the second paging opportunity for receiving the second PDCCH according to the above-mentioned first identifier, and the network device determines the position of the second paging frame and the second paging opportunity for sending the second DCI according to the above-mentioned first identifier of the first terminal device, or the first terminal device determines the position of the second paging frame and the second paging opportunity for receiving the second PDCCH according to the 5G-S-TMSI, and the network device determines the position of the second paging frame and the second paging opportunity for sending the second DCI according to the 5G-S-TMSI of the first terminal device, and this application does not limit this. In other words, the identifier of the first terminal device used by the first terminal device to determine the position of the second paging frame and the second paging opportunity for receiving the second PDCCH needs to be consistent with the identifier of the first terminal device used by the network device to determine the position of the second paging frame and the second paging opportunity for sending the second DCI.

[0180] Exemplarily, if the first terminal device determines the position of receiving the second paging frame and the second paging opportunity of the second PDCCH based on the 5G-S-TMSI, when DRX is configured, the UE_ID in the above formula 1 and the above formula 2 represents the remainder of the terminal device's 5G-S-TMSI mod4096; when DRX is not configured, the UE_ID in the above formula 1 and the above formula 2 represents the remainder of the terminal device's 5G-S-TMSI mod 1024. If the first terminal device determines the position of receiving the second paging frame and the second paging opportunity of the second PDCCH according to the above-mentioned first identifier, the UE_ID in the above-mentioned formula 1 and the above-mentioned formula 2 represents the above-mentioned first identifier (paging_ID) of the terminal device; or, the UE_ID in the above-mentioned formula 1 and the above-mentioned formula 2 represents the remainder of the paging_ID mod M1 of the terminal device, and M1 is a default value or a value configured by the network device, and the value of M1 includes but is not limited to {1,2,4,8,16,32,64,128,256,512,1024,2048,4096,8192,16384}.

[0181] It should be noted that in the embodiment of the present application, the parameter values ​​of the first configuration information and the second configuration information configured by the network device are different. In other words, the position of the first paging occasion determined by the first terminal device is different from the position of the second paging occasion.

[0182] Step S514: when the first condition is met, the first terminal device monitors the second PDCCH for scheduling the second paging message at the second paging occasion.

[0183] Specifically, the first condition is that the signal quality of the current cell where the first terminal device is located is lower than the first threshold, and / or the first condition is that the first terminal device does not monitor the PDCCH for paging within the first time period. The first threshold may be preset or specified by the protocol, which is not limited in the present application. The first time period may be preset or specified by the protocol, which is not limited in the present application. The signal quality may be evaluated by the value of the reference signal receiving power (RSRP), which is not limited in the present application.

[0184] Alternatively, the first condition is that the terminal device detects the PDCCH for paging but cannot correctly demodulate the PDSCH carrying the paging message. Exemplarily, the PDCCH for paging can be the first PDCCH, the PDSCH carrying the paging message can be the first PDSCH, and the paging message carried can be the first paging message.

[0185] Step S516: When the network device fails to page the first terminal device N times, the network device sends a second DCI to the first terminal device at a second paging opportunity.

[0186] Wherein, N is a positive integer greater than or equal to 1.

[0187] Specifically, the second DCI indicates a transmission resource of a second PDSCH used for sending / receiving a second paging message.

[0188] Step S518: The network device sends a second paging message to the first terminal device at the transmission resource of the second PDSCH. Correspondingly, the first terminal device receives the second paging message from the network device at the transmission resource of the second PDSCH.

[0189] Specifically, the second paging message may include the first identifier of the first terminal device in the first area.

[0190] Optionally, the second paging message may include the 5G-S-TMSI or I-RNTI or IMSI of the first terminal device, which is not limited in this application.

[0191] Through the above-mentioned paging method 500, some terminal devices with lower signal-to-noise ratio can move to an area with better signal to access the network after receiving the second paging message, which can solve the problem that the terminal devices cannot receive paging messages in areas with poor signals.

[0192] In order to ensure that the terminal device can receive and successfully demodulate the second paging message, the network device can repeatedly send the second DCI used to schedule the second paging message and the second paging message to achieve downlink enhancement. Exemplarily, the number of repeated transmissions can be the default number of repetitions 2 / 4 / 8 / 16, etc., or the repetition method can be customized, which is not limited in this application.

[0193] Specifically, the above-mentioned repeated sending method may include the following two methods:

[0194] The first method: the network device repeatedly sends the second DCI to the first terminal device multiple times at the same second paging opportunity, and the network device correspondingly sends multiple second paging messages. The terminal device combines and demodulates the multiple second paging messages received.

[0195] The second method: the network device sends a second DCI to the first terminal device once at a second paging opportunity, and sends the second DCI to the first terminal device again at the next second paging opportunity, that is, the network device sends multiple second DCIs to the terminal device at the second paging opportunities of different paging cycles, and multiple second DCIs schedule the sending of multiple second paging messages. The terminal device combines and demodulates the multiple second paging messages received.

[0196] By carrying the first identifier of the first terminal device in the second paging message (the first identifier is represented by paging_ID in the formula below), the content of the second paging message can be reduced, thereby lowering the demodulation threshold of the second paging message and improving the paging success rate of the second paging message.

[0197] In order to further reduce the content of the paging message, the present application provides a method for indicating the identity of the first terminal device by using a sequence.

[0198] The method comprises: the network device sends a third paging message at a third paging opportunity, the third paging message comprises a second identifier, and the second identifier is used to identify the terminal device to be paged by the network device.

[0199] The terminal device to be paged by the network device is the first terminal device or the second terminal device, and the third paging opportunity is associated with the first terminal device and the third terminal device.

[0200] Exemplarily, the network device groups at least one terminal device according to different paging occasions within a paging cycle, and one or more terminal devices #1 with the same corresponding paging occasions belong to one group, and then one or more terminal devices #1 in one group are identified in sequence.

[0201] For example, the first terminal device obtains its own first identifier (paging_ID), 5G-S-TMSI, I-RNTI and other identifiers. The first identifier (paging_ID) is used as an example for explanation below. The number of paging occasions PO in a paging cycle T is M, and the PO corresponding to the first terminal device is PO#1.

[0202] The first terminal device may determine the PO at which the first terminal device receives the third paging message in a paging cycle according to the following formula 3:

[0203] i_s=paging_ID mod M Formula 3

[0204] It should be understood that the first terminal device can determine the PO position of the paging cycle at which the first terminal device receives the third paging message by using the above formula 3. The first terminal device can determine the PO#1 index of the first terminal device in the paging cycle by using the above formula 2.

[0205] The sequence of the first terminal device in PO#1 is determined according to the following formula 4:

[0206]

[0207] When the first terminal device receives the sequence in the paging message, it can restore the sequence by the following formula 5:

[0208] sequence_ID*M+paging_ID mod M=paging_ID Formula 5

[0209] like Figure 6 As shown, assuming Figure 6The number of POs in a paging cycle is 2, which are respectively in the nth time slot (slot n) and the n+xth time slot (slot n+x) of the paging cycle. The first PO corresponds to 5 terminal devices, and the first identifications (paging_ID) of the 5 terminal devices are 0, 2, 4, 6, and 8 respectively; the second PO corresponds to another 5 terminal devices, and the first identifications (paging_ID) of the other 5 terminal devices are 1, 3, 5, 7, and 9 respectively. The value range of the first identifications of the 10 terminal devices in the paging cycle is 0 to 9. According to the above formula 4, the value range of the sequence (sequence_ID) of the 10 terminal devices in the paging cycle is 0 to 4. The sequences of the 5 terminal devices corresponding to the first PO are 0, 1, 2, 3, and 4 respectively, and the sequences of the other 5 terminal devices corresponding to the second PO are also 0, 1, 2, 3, and 4 respectively. If the first identifier of the first terminal device is 2, then the third paging message received by the first terminal device on the first PO of the paging cycle includes sequence 1, indicating that the first terminal device is paged.

[0210] As another example, the number of POs in a paging cycle is 16, and the first identifier (paging_ID) of the first terminal device is 500. Then, according to the above formula 3, it can be known that the first terminal device is at the fifth PO of the paging cycle, and according to the above formula 4, it can be known that the sequence (sequence_ID) corresponding to the first terminal device is 31. The third paging message received by the first terminal device at the fifth AO of the paging cycle includes sequence 31, indicating that the first terminal device is paged.

[0211] Optionally, the third paging message may be carried in a PDCCH detected by the first terminal device at a third paging occasion.

[0212] To ensure that the terminal device is successfully paged using the above sequence, the network device may repeatedly send the third paging message carrying the second identifier. For example, the number of repeated transmissions may be the default number of repetitions 2 / 4 / 8 / 16, etc., or a custom repetition method may be used, which is not limited in this application.

[0213] Specifically, when the terminal device to be paged by the network device at the third paging occasion is the first terminal device, the above-mentioned repeated sending manner may include the following two manners:

[0214] The first way: the network device repeatedly sends a third paging message to the first terminal device multiple times during the third paging opportunity of a paging cycle. The first terminal device combines and demodulates the received multiple third paging messages.

[0215] The second method: the network device sends a third paging message to the first terminal device once at the third paging opportunity of a paging cycle, and sends a third paging message to the first terminal device once at the third paging opportunity of the next paging cycle, that is, the network device sends multiple third paging messages to the first terminal device at the third paging opportunities of different paging cycles. The first terminal device combines and demodulates the multiple third paging messages received.

[0216] Specifically, when the terminal devices to be paged by the network device at the third paging opportunity are the first terminal device and the second terminal device, the above-mentioned repeated sending manner may also include the following two manners:

[0217] The third way: the network device repeatedly sends the third paging message to the first terminal device and the second terminal device multiple times at the third paging opportunity of a paging cycle. The first terminal device and the second terminal device respectively combine and demodulate the received multiple third paging messages.

[0218] The fourth method: the network device sends a third paging message to the first terminal device and the second terminal device once at the third paging opportunity of a paging cycle, and sends a third paging message to the first terminal device and the second terminal device once at the third paging opportunity of the next paging cycle, that is, the network device sends multiple third paging messages to the first terminal device and the second terminal device at the third paging opportunities of different paging cycles. The first terminal device and the second terminal device respectively combine and demodulate the multiple received third paging messages.

[0219] The "sending a third paging message to the first terminal device and the second terminal device at the third paging opportunity" in the third and fourth modes mentioned above may specifically be: sending by multiplying or adding the second identifier corresponding to the first terminal device and the second identifier corresponding to the second terminal device.

[0220] The paging messages sent by the network device to the terminal device can be divided into two categories: the first category is short message-type paging messages, such as system update indication messages, earthquake and tsunami warning system (ETWS) messages, etc. The second category is paging messages used to establish a connection.

[0221] In the case of extremely limited communication links, the terminal device cannot even maintain downlink synchronization, and the network device cannot notify the terminal device of public safety issues through short message-type paging messages. In order to alert the terminal device of public safety issues, this application adds a new alarm message for alerting the terminal device of public safety issues, such as Figure 7 shown. Figure 7The method shown can be executed by a terminal device and a network device, or by a module and / or device (for example, a chip or an integrated circuit, etc.) with corresponding functions installed in the terminal device and the network device, and this application does not limit this. The following description takes the terminal device and the network device as an example. Figure 7 As shown, the method 700 includes:

[0222] The method comprises: step S710, when a public safety problem occurs, the network device broadcasts an alarm message to the terminal device, and the alarm message is used to indicate the occurrence of the public safety problem.

[0223] Exemplarily, the warning message carries 1 bit. If the warning message carries bit 1, it indicates that a public safety issue has occurred; if the warning message carries bit 0, it indicates that no public safety issue has occurred.

[0224] The above warning messages are used for disaster warning.

[0225] Step S712: the terminal device monitors the alarm message.

[0226] Exemplarily, the terminal device may monitor the above-mentioned alarm message while monitoring a synchronization signal block (SSB).

[0227] Alternatively, the terminal device may blindly detect the alarm message.

[0228] Through the above method 700, in the scenario where the communication link is extremely limited, the terminal device can receive public safety alarm information, and ensure that the terminal device moves to a safe area to access the network and avoid danger in time.

[0229] Finally, the device embodiment of the embodiment of the present application is introduced.

[0230] In order to implement the functions in the method provided in this application, the terminal device and the network device may include a hardware structure and / or a software module, and implement the above functions in the form of a hardware structure, a software module, or a hardware structure plus a software module. Whether one of the above functions is executed in the form of a hardware structure, a software module, or a hardware structure plus a software module depends on the specific application and design constraints of the technical solution.

[0231] Figure 8 8 is a schematic block diagram of a communication device 800 according to an embodiment of the present application. The communication device 800 includes a processor 810 and a communication interface 820, and the processor 810 and the communication interface 820 may be interconnected via a bus 830. The communication device 800 may be a network device or a terminal device.

[0232] Optionally, the communication device 800 may further include a memory 840. The memory 840 includes, but is not limited to, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM), or a portable read-only memory (CD-ROM), and the memory 840 is used for related instructions and data.

[0233] The processor 810 may be one or more central processing units (CPUs). When the processor 810 is a CPU, the CPU may be a single-core CPU or a multi-core CPU.

[0234] When the communication device 800 is a terminal device, illustratively, the communication device 800 is used to perform the following operations: receiving first information from a network device, etc.

[0235] When the communication device 800 is a network device, illustratively, the communication device 800 is used to perform the following operations: sending first information to a terminal device, etc.

[0236] The above contents are only exemplary descriptions. When the communication device 800 is a network device / terminal device, it will be responsible for executing the methods or steps related to the network device / terminal device in the above method embodiments.

[0237] The above description is only an exemplary description. For specific content, please refer to the content shown in the above method embodiment. Figure 8 The implementation of each operation can also refer to Figures 4 to 7 The corresponding description of the method embodiment shown.

[0238] Fig. 9 1 is a schematic block diagram of a communication device 900 of an embodiment of the present application. The communication device 900 may be a network device or a terminal device, or may be a chip or module in the network device or the terminal device, for implementing the method involved in the above embodiment. The communication device 900 includes a transceiver unit 910. The transceiver unit 910 and the processing unit 920 are exemplarily introduced below.

[0239] The transceiver unit 910 may include a sending unit and a receiving unit. The sending unit is used to perform a sending action of the communication device, and the receiving unit is used to perform a receiving action of the communication device. For ease of description, the embodiment of the present application combines the sending unit and the receiving unit into one transceiver unit. A unified description is given here, and no further description is given later.

[0240] When the communication device 900 is a terminal device, illustratively, the transceiver unit 910 is used to receive second information from a network device, and the processing unit 920 is used to determine a first alarm timing, etc. according to the received second information.

[0241] When the communication device 900 is a network device, illustratively, the transceiver unit 910 is used to send the second information to the terminal device, and the processing unit 920 is used to determine the first alarm timing according to the second information.

[0242] The above contents are only exemplary descriptions. When the communication device 900 is a network device / terminal device, it will be responsible for executing the methods or steps related to the network device / terminal device in the above method embodiments.

[0243] Optionally, the communication device 900 further includes a storage unit 930, and the storage unit 930 is used to store a program or code for executing the aforementioned method.

[0244] Figure 8 and Fig. 9 The device embodiment shown is used to implement Figures 4 to 7 The content described. Figure 8 and Fig. 9 The specific execution steps and methods of the device shown can refer to the contents described in the aforementioned method embodiment.

[0245] Fig.10 1 is a schematic block diagram of a communication device 1000 according to an embodiment of the present application. The communication device 1000 is used to implement the functions of a network device / terminal device. The communication device 1000 may be a chip in a network device / terminal device.

[0246] The communication device 1000 includes: an input / output interface 1020 and a processor 1010. The input / output interface 1020 may be an input / output circuit. The processor 1010 may be a signal processor, a chip, or other integrated circuit that can implement the method of the present application. The input / output interface 1020 is used for inputting or outputting signals or data.

[0247] For example, when the communication device 1000 is a terminal device, the input / output interface 1020 is used to receive the second information from the network device. The processor 1010 is used to determine the first alarm timing etc. according to the received second information.

[0248] For example, the communication device 1000 is a network device, and the input / output interface 1020 is used to send the second information to the terminal device. The processor 1010 is used to determine the first alarm opportunity according to the second information.

[0249] In one possible implementation, the processor 1010 implements the functions implemented by the network device or the terminal device by executing instructions stored in the memory.

[0250] Optionally, the communication device 1000 also includes a memory.

[0251] Optionally, the processor and memory are integrated together.

[0252] Optionally, the memory is outside the communication device 1000 .

[0253] In a possible implementation, the processor 1010 may be a logic circuit, and the processor 1010 inputs / outputs messages or signals through the input / output interface 1020. The logic circuit may be a signal processor, a chip, or other integrated circuit that can implement the method of the embodiment of the present application.

[0254] The above description of the communication device 1000 is only an exemplary description. The communication device 1000 can be used to execute the method described in the above embodiment. The specific content can be found in the description of the above method embodiment, which will not be repeated here.

[0255] The present application also provides a chip, including a processor, for calling and executing instructions stored in a memory from the memory, so that a communication device equipped with the chip executes the methods in the above examples.

[0256] The present application also provides a chip, including: an input interface, an output interface, and a processor, wherein the input interface, the output interface, and the processor are connected via an internal connection path, and the processor is used to execute the code in the memory, and when the code is executed, the processor is used to execute the method in each of the above examples. Optionally, the chip also includes a memory, and the memory is used to store computer programs or codes.

[0257] The present application also provides a processor, which is coupled to a memory and is used to execute the methods and functions involving a network device or a terminal device in any of the above embodiments.

[0258] The present application provides a computer program product comprising instructions. When the computer program product is run on a computer, the method of the aforementioned embodiment is implemented.

[0259] The present application also provides a computer program. When the computer program is executed in a computer, the method of the above embodiment is implemented.

[0260] The present application also provides a computer-readable storage medium, which stores a computer program. When the computer program is executed by a computer, the method described in the above embodiment is implemented.

[0261] 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.

[0262] 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.

[0263] In several embodiments provided in the present application, 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 units is only a logical function division. There may be other division methods in actual implementation. For example, 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.

[0264] The units described as separate components may or may not be physically separated, and the components displayed 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 technical solution of the embodiment of the present application.

[0265] 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.

[0266] If the function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the embodiment 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, server, or network device, etc.) to perform all or part of the steps of each method embodiment of the present application. The aforementioned storage medium includes: various media that can store program codes, such as USB flash drives, mobile hard drives, ROM, RAM, magnetic disks, or optical disks.

[0267] The above is only a specific implementation of the present application, but the protection scope of the embodiments of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the embodiments of the present application should be included in the protection scope of the embodiments of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A paging method, characterized in that: For a first terminal device or a chip system in the first terminal device, the method includes: Receive first information from a network device, where the first information is used to indicate a first identification of the first terminal device in a first area, where the first area is one or more tracking areas; A first paging message is received from the network device, where the first paging message includes the first identifier.

2. The method according to claim 1, characterized in that: The method further comprises: When the first condition is met, the first terminal device receives a second paging message from the network device, The first condition is that the signal quality of the current cell where the first terminal device is located is lower than a first threshold, and / or the first condition is that the first terminal device does not monitor a physical downlink control channel PDCCH for paging within a first time period, or, The first condition is that the first terminal device monitors the PDCCH used for paging but cannot correctly demodulate the physical downlink shared channel PDSCH carrying the first paging message.

3. The method according to claim 1, characterized in that The second paging message includes at least one of the first identification of the first terminal device or an International Mobile Subscriber Identity IMSI or a Temporary Mobile Subscriber Identity TMSI or a Radio Network Temporary Identity RNTI.

4. A paging method, characterized in that: The method applied to a first terminal device or a chip system in the first terminal device includes: When the first condition is met, receiving a second paging message from the network device, The first condition is that the signal quality of the current cell where the first terminal device is located is lower than a first threshold, and / or the first condition is that the first terminal device does not monitor a physical downlink control channel PDCCH for paging within a first time period, Alternatively, the first condition is that the first terminal device monitors the PDCCH used for paging but cannot correctly demodulate the physical downlink shared channel PDSCH carrying the first paging message.

5. The method according to claim 4, characterized in that The first paging message or the second paging message includes at least one of the first identification of the first terminal device in the first area, the international mobile user identity IMSI of the first terminal device, the temporary mobile user identification TMSI of the first terminal device, or the wireless network temporary identification RNTI of the first terminal device, and the first area is one or more tracking areas.

6. A paging method, characterized in that: Chip systems for network devices or in network devices, including: Sending first information to a first terminal device, where the first information is used to indicate a first identifier of the first terminal device in a first area, where the first area is one or more tracking areas; A first paging message is sent to the first terminal device, where the first paging message includes the first identifier.

7. The method according to claim 6, characterized in that When the network device fails to page the first terminal device N times, the method further includes: sending a second paging message to the first terminal device, Wherein, N is a positive integer greater than or equal to 1.

8. The method according to claim 7, characterized in that The second paging message includes at least one of the first identification of the first terminal device or an International Mobile Subscriber Identity IMSI or a Temporary Mobile Subscriber Identity TMSI or a Radio Network Temporary Identity RNTI.

9. The method according to any one of claims 6 to 8, characterized in that The method further comprises: A third paging message is sent at a third paging opportunity, and the third paging message includes a second identifier, and the second identifier is used to identify the terminal device to be paged at the third paging opportunity, and the terminal device to be paged is the first terminal device or the second terminal device, and the third paging opportunity is associated with the first terminal device and the second terminal device.

10. A paging method, characterized in that: For a network device or a chip system in the network device, the method comprises: paging at least one terminal device; When the paging of the first terminal device fails N times, sending a second paging message to the first terminal device, Wherein, N is a positive integer greater than or equal to 1.

11. The method according to claim 10, characterized in that The second paging message includes the first identification of the first terminal device in the first area or the international mobile user identity IMSI of the first terminal device or the temporary mobile user identification TMSI of the first terminal device or the wireless network temporary identification RNTI of the first terminal device, and the first area is one or more tracking areas.

12. The method according to claim 10 or 11, characterized in that: The method further comprises: A third paging message is sent at a third paging opportunity, and the third paging message includes a second identifier, and the second identifier is used to identify the terminal device to be paged at the third paging opportunity, and the terminal device to be paged is the first terminal device or the second terminal device, and the third paging opportunity is associated with the first terminal device and the second terminal device.

13. A communication device, characterized in that: comprising a processor configured to, by executing a computer program or instructions, The communication device is enabled to execute the method according to any one of claims 1 to 5.

14. A communication device, characterized in that: comprising a processor configured to, by executing a computer program or instructions, The communication device is enabled to execute the method according to any one of claims 6 to 12.

15. The communication device according to claim 13 or 14, characterized in that: The communication device further comprises a memory for storing the computer program or instructions.

16. The communication device according to claim 13 or 14, characterized in that: The communication device further comprises a communication interface, and the communication interface is used for inputting and / or outputting signals.

17. A computer-readable storage medium, characterized in that: The computer readable storage medium stores a computer program or instruction. When the computer program or instruction is executed on a computer, so that the method of any one of claims 1 to 5 is performed; or, The method according to any one of claims 6 to 12 is performed.

18. A computer program product, characterized in that Contains instructions that, when executed on a computer, so that the method of any one of claims 1 to 5 is performed; or, The method according to any one of claims 6 to 12 is performed.

Images