Paging Cause Sending and Obtaining Method, Device, Medium

Abstract

A method, device, and medium for sending and obtaining a paging cause. The method includes: determining a target user equipment that needs to indicate a paging cause M; sending a paging message, where the paging message includes the paging cause M and identification information of the target user equipment. The above solution can indicate the paging cause and its corresponding type while reducing the amount of information required to be added to the paging message.

Description

Technical Field

[0001] The present invention relates to the field of wireless communication technologies, and in particular, to a method, apparatus, and medium for sending and obtaining paging reasons. Background Art

[0002] With the development of communication technologies, more and more users use multi-SIM multi-standby user equipment (UE) to meet different communication requirements. A common multi-SIM multi-standby user equipment is a dual-SIM dual-standby user equipment. The two USIM cards can belong to the same telecommunications operator or different telecommunications operators.

[0003] In a dual-SIM dual-standby user equipment, the two USIM cards usually share the same set of radio frequency and baseband devices, which inevitably brings the following problems: when one USIM card is in a communication state, the other USIM card also needs to monitor paging messages, perform cell measurements, etc., and may even need to disconnect the service being carried out by the USIM card in the communication state to monitor the paging messages of the other USIM card.

[0004] In view of the above problems, in the prior art, when USIM card 1 is connected to network A, USIM card 2 periodically monitors the paging messages of network B and determines whether to respond to the paging messages of network B according to the paging reason.

[0005] It is meaningful and necessary for the base station to notify the user equipment of the paging reason. In the prior art, a paging cause field is added to the paging message. However, in the LTE system, a paging message can carry at most 16 paging records. If each paging record carries the paging reason, assuming there are 5 paging reasons, then 3 bits are needed to indicate the paging reason. In total, 16 paging records require 48 bits; in the NR system, a paging message can carry at most 32 paging records. Then, because the paging reason is carried in a paging message, 96 bits need to be added, and the paging message in the NR system needs to be repeatedly sent in multiple beams (beams).

[0006] It can be seen that in the prior art, due to the addition of the paging reason, the amount of information in the paging message has increased significantly. Summary of the Invention

[0007] The embodiments of the present invention solve the problem of the increase in the amount of information in the paging message caused by the addition of the paging reason.

[0008] To solve the above technical problems, an embodiment of the present invention provides a paging cause sending method, including: determining a target user equipment that needs to indicate a paging cause M; wherein, the paging cause M is one of N paging causes; sending a paging message, where the paging message includes the paging cause M and identification information of the target user equipment.

[0009] Optionally, determining the target user equipment that needs to indicate the paging cause M includes: determining the number of target user equipments that need to indicate the paging cause M.

[0010] Optionally, before sending the paging message, it further includes: sending downlink control information, where the downlink control information is used to schedule the paging message, and the downlink control information includes the number of target user equipments.

[0011] Optionally, the paging message includes identification information of X user equipments, and the number of target user equipments is K; the identification information of the K target user equipments is at the forefront or at the end of the identification information of the X user equipments.

[0012] Optionally, the paging cause sending method further includes: indicating whether the paging cause M is carried in the paging message.

[0013] Optionally, indicating whether the paging cause M is carried in the paging message includes: configuring whether the paging cause M is carried in the paging message.

[0014] Optionally, the paging message further includes paging cause indication information, where the paging cause indication information is used to indicate whether the paging message includes the paging cause M.

[0015] Optionally, indicating whether the paging cause M is carried in the paging message includes: indicating whether the paging cause M is carried in the paging message through high-layer signaling.

[0016] Optionally, indicating whether the paging cause M is carried in the paging message includes: indicating whether the paging cause M is carried in the paging message through one bit in the downlink control information.

[0017] Optionally, one bit in the downlink control information is one bit in a short message.

[0018] Optionally, the paging cause sending method further includes: when the paging cause M is carried in the paging message, indicating the specific type of the paging cause M.

[0019] Optionally, the specific type indicating the paging cause includes: adding a second indication field in the paging message, and the value of the second indication field is used to characterize the type of the paging cause.

[0020] Optionally, the type indicating the paging cause includes: indicating the type of the paging cause to the user equipment through high-layer signaling.

[0021] Optionally, the type indicating the paging cause includes: dividing the reserved bit into a first part and a second part, where the first part is used to indicate the number of target user equipments in the paging record list, and the second part is used to indicate the type of the paging cause.

[0022] Optionally, the sending of the paging message includes: adding a new paging record list in the paging message, and there is a corresponding paging cause for the paging records in the new paging record list, while there is no corresponding paging cause for the paging records in the existing paging record list.

[0023] Optionally, the paging cause sending method further includes: configuring whether to carry the new paging record list in the paging message.

[0024] To solve the above technical problems, an embodiment of the present invention further provides a paging cause obtaining method, including: receiving a paging message sent by a base station, where the paging message includes a paging cause M and identification information of a target user equipment, the target user equipment is the user equipment determined by the base station that needs to indicate the paging cause M, and the paging cause M is one of N paging causes.

[0025] Optionally, before receiving the paging message, it further includes: receiving downlink control information, where the downlink control information is used to schedule the paging message and includes the number of target user equipments.

[0026] Optionally, the paging message includes identification information of X user equipments, and the number of target user equipments is K; the identification information of the K target user equipments is at the front or at the end of the identification information of the X user equipments.

[0027] Optionally, the paging cause obtaining method further includes: obtaining a paging cause indication message, where the paging cause indication message is used to indicate whether the paging cause M is carried in the paging message.

[0028] Optionally, the obtaining of the paging cause indication message includes: obtaining the paging cause indication information from the paging message.

[0029] Optionally, obtaining the paging cause indication message includes: receiving a high-layer signaling sent by the base station, where the high-layer signaling carries the paging cause indication information.

[0030] Optionally, obtaining the paging cause indication message includes: receiving a downlink control information sent by the base station, where the downlink control information carries the paging cause indication information.

[0031] Optionally, the paging cause indication information is a bit of a short message in the downlink control information.

[0032] Optionally, the paging cause obtaining method further includes: obtaining the type of the paging cause.

[0033] Optionally, obtaining the type of the paging cause includes: reading a second indication field in the paging message, and a value of the second indication field is used to represent the type of the paging cause.

[0034] Optionally, obtaining the type of the paging cause includes: receiving a high-layer signaling sent by the base station, where the high-layer signaling carries the type of the paging cause.

[0035] Optionally, obtaining the type of the paging cause includes: obtaining a value of a reserved bit, where the reserved bit includes a first part and a second part, and the first part is used to indicate the number of target user equipments in the paging record list, and the second part is used to indicate the type of the paging cause.

[0036] Optionally, receiving the paging message sent by the base station includes: obtaining a new paging record list from the paging message, where there is a corresponding paging cause for the paging record in the new paging record list, and there is no corresponding paging cause for the paging record in the existing paging record list.

[0037] Optionally, the paging cause obtaining method further includes: receiving a paging record list indication information, where the paging record list indication information is used to indicate whether the paging message carries the new paging record list.

[0038] An embodiment of the present invention further provides a paging cause sending device, including: a determining unit, configured to determine a target user equipment that needs to indicate a paging cause M, where the paging cause M is one of N paging causes; a sending unit, configured to send a paging message, where the paging message includes the paging cause M and identification information of the target user equipment.

[0039] An embodiment of the present invention further provides a paging reason acquisition device, including: a receiving unit, configured to receive a paging message sent by a base station, where the paging message includes a paging reason and identification information of a target user equipment, the target user equipment is a user equipment determined by the base station that needs to indicate the paging reason M, and the paging reason M is one of N paging reasons.

[0040] An embodiment of the present invention further provides a computer-readable storage medium, where the computer-readable storage medium is a non-volatile storage medium or a non-transitory storage medium, and a computer program is stored thereon. When the computer program is run by a processor, it executes the steps of any one of the above-mentioned paging reason sending methods.

[0041] An embodiment of the present invention further provides another computer-readable storage medium, where the computer-readable storage medium is a non-volatile storage medium or a non-transitory storage medium, and a computer program is stored thereon. When the computer program is run by a processor, it executes the steps of any one of the above-mentioned paging reason acquisition methods.

[0042] An embodiment of the present invention further provides another paging reason sending device, including a memory and a processor. A computer program that can run on the processor is stored on the memory. When the processor runs the computer program, it executes the steps of any one of the above-mentioned paging reason sending methods.

[0043] An embodiment of the present invention further provides another paging reason acquisition device, including a memory and a processor. A computer program that can run on the processor is stored on the memory. When the processor runs the computer program, it executes the steps of any one of the above-mentioned paging reason acquisition methods.

[0044] Compared with the prior art, the technical solution of the embodiment of the present invention has the following beneficial effects:

[0045] Determine a target device that needs to indicate the paging reason M, and send a paging message to the user equipment. The paging reason M and the identification information of the target user equipment are carried in the paging message. Only the paging reason M and the identification information of the target user equipment corresponding to the paging reason M need to be added, rather than adding all paging reasons and the identification information of the user equipment corresponding to all paging reasons, which can reduce the increase in the amount of information of the paging message caused by adding paging reasons.

[0046] Further, after determining the target user equipment that needs to indicate the paging cause M, downlink control information for scheduling a paging message is sent. The downlink control information includes the number of target user equipment, and the value of the reserved bit in the downlink control information is used to indicate the number of target user equipment. By pre-agreeing on the type of paging cause corresponding to the reserved bit, while implementing the indication of the paging cause and its corresponding type, there is no need to additionally increase the information volume of the paging message. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] Figure 1 is a flowchart of a method for sending a paging cause in an embodiment of the present invention;

[0048] Figure 2 is a flowchart of a method for obtaining a paging cause in an embodiment of the present invention;

[0049] Figure 3 is a schematic structural diagram of a device for sending a paging cause in an embodiment of the present invention;

[0050] Figure 4 is a schematic structural diagram of a device for obtaining a paging cause in an embodiment of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0051] As described above, in the prior art, a paging cause field is added to the paging message. In the LTE system, a paging message can carry at most 16 paging records. If each paging record carries the paging cause, assuming there are 5 paging causes, 3 bits are required to indicate the paging cause. Then, a total of 48 bits are required for 16 paging records; in the NR system, a paging message can carry at most 32 paging records. Then, due to carrying the paging cause, a paging message needs to increase by 96 bits, and in the NR system, the paging message needs to be repeatedly sent in multiple beams.

[0052] It can be seen that in the prior art, due to the addition of the paging cause, the information volume of the paging message is greatly increased.

[0053] In an embodiment of the present invention, a target device that needs to indicate the paging cause M is determined, and a paging message is sent to the user equipment. The paging message carries the paging cause M and the identification information of the target user equipment. Only the identification information of the target user equipment corresponding to the paging cause M and the paging cause M needs to be added, rather than adding the identification information of all paging causes and all user equipment corresponding to all paging causes, which can reduce the increase in the information volume of the paging message caused by adding the paging cause.

[0054] To make the above objects, features, and beneficial effects of the present invention more obvious and understandable, the following provides a detailed description of specific embodiments of the present invention with reference to the accompanying drawings.

[0055] An embodiment of the present invention provides a paging cause sending method, which will be described in detail through the following specific steps with reference to Figure 1 .

[0056] In a specific implementation, the paging cause sending method provided in the following steps S101 to S102 can be executed by a control chip in a base station device, or by a chip module including a control chip in the base station device, or by the base station device.

[0057] Step S101: Determine the target user equipment that needs to indicate the paging cause M.

[0058] In a specific implementation, the paging cause M can be one of N paging causes.

[0059] In a specific application, the paging cause refers to the reason for initiating paging, which is translated from "paging cause". The paging cause is roughly the same as the meaning of the paging message type (paging category). Without special instructions, the above identifiers can be equivalent.

[0060] In the existing protocol, the N paging causes can include voice service, messaging service, critical service, CP signaling, other service, etc. Of course, the paging cause can also be continuously updated with the development of communication technology.

[0061] In a specific implementation, the base station can determine which user equipment needs to indicate the paging cause. In the embodiment of the present invention, for the convenience of description, the user equipment that needs to indicate the paging cause is simply referred to as the target user equipment. After the base station determines the target user equipment, it can count the number of target user equipment.

[0062] In the embodiment of the present invention, the target user equipment can be user equipment with the same paging cause. In other words, the number of target user equipment can be multiple, and the paging cause corresponding to each target user equipment is the same.

[0063] Step S102: Send a paging message.

[0064] In a specific implementation, the paging message can include the paging cause M and the identification information of the target user equipment.

[0065] In an embodiment of the present invention, before sending a paging message, downlink control information may also be sent to a user equipment, where the downlink control information is used to schedule the foregoing paging message, and the number of target user equipments is carried in the downlink control information.

[0066] According to the existing NR protocol, it is known that a paging message is carried or scheduled by a PDCCH of a Downlink Control Information (DCI) format 1_0 scrambled by a P-RNTI, and there are 6-8 bits of reserved bits therein, and the reserved bits are also transmitted. Usually, the reserved bits are set to all 0.

[0067] In an embodiment of the present invention, after determining the number of target user equipments, a base station may use the reserved bits in the DCI scrambled by the P-RNTI for scheduling the paging message to indicate the number of target user equipments.

[0068] For example, the paging cause M is paging cause 1. If a certain paging message includes 10 paging records, and each paging record corresponds to paging cause 1. Since the decimal number 10 corresponds to the binary number 1010, the values of four bits in the reserved bits in the DCI scrambled by the P-RNTI for scheduling the paging message (for example, the upper four bits in the reserved bits, or the lower four bits in the reserved bits, or the middle four bits in the reserved bits, the embodiment of the present invention does not limit the specific bit positions) can be set to 1010.

[0069] In an existing paging message, it includes a paging record list, and the paging record list includes paging records corresponding to multiple user equipments, but does not carry a paging cause. For example, in an NR system, the paging record list may include at most 32 paging records corresponding to user equipments.

[0070] In an embodiment of the present invention, it may be stipulated that the paging records corresponding to a paging cause are placed in the first part of the paging record list, and the paging records without a corresponding paging cause are placed in the second part of the paging record list; or, it may be stipulated that the paging records corresponding to a paging cause are placed in the second part of the paging record list, and the paging records without a corresponding paging cause are placed in the first part of the paging record list.

[0071] That is to say, in the paging record list, the paging records corresponding to the paging cause and the paging records without the paging cause are divided into two parts, and the two parts are independent of each other. In a specific implementation, the position of the paging record corresponding to the paging cause in the paging record list can be predefined. When the user equipment receives the downlink control information scrambled by the P-RNTI for scheduling the paging message, it can determine whether there is a paging cause and the type of the paging cause according to the position of its corresponding paging record in the paging record list.

[0072] Continuing with the example where the above 10 paging records all correspond to paging cause 1 for illustration. In the paging record list, there are 32 paging records. Among them, the first 10 paging records have the corresponding paging cause 1, and the last 22 paging records do not have the corresponding paging cause.

[0073] In a specific implementation, if the reserved bit of the downlink control information scrambled by the P-RNTI for scheduling the paging message has a value of all 0s, it indicates that the current paging message does not contain a paging record corresponding to a paging cause.

[0074] In the prior art, assuming that a certain paging message contains 10 paging records, if each paging record contains paging cause 1, then according to the prior art, the paging cause needs to be indicated in the paging record. Then, 30 bits need to be added in the paging message.

[0075] For another example, assuming that a certain paging message contains 32 paging records, if each paging record contains paging cause 1, then according to the prior art, the paging cause needs to be indicated in the paging record. Then, 96 bits need to be added in the paging message.

[0076] In the embodiment of the present invention, if a certain paging message contains 10 paging records, and each paging record corresponds to paging cause 1, then in the paging message, no additional bit needs to be added, and only the reserved bits in the DCI of the P-RNTI scrambled PDCCH for scheduling the paging message need to be used. Since the decimal number 10 corresponds to the binary number 1010, the value of the reserved bit in the DCI of the P-RNTI scrambled PDCCH for scheduling the paging message can be 1010 (the present invention does not limit which bits in the reserved bits are specifically used).

[0077] It can be seen that by adopting the paging cause sending method provided in the embodiment of the present invention, the number of bits used to indicate the paging record in the paging message can be greatly reduced, and the overhead of the paging message can be reduced.

[0078] In a specific implementation, the base station can indicate whether the paging message carries the paging cause M. Specifically, the base station can configure whether the paging message carries the paging cause M.

[0079] In an embodiment of the present invention, the base station may indicate whether the paging message carries a paging cause M. The base station may add a first indication field in the paging message, and use the value of the first indication field to indicate whether the paging cause M is carried in the paging message.

[0080] For example, in the paging message, a first indication field is added. The length of the first indication field is 1 bit. When the value of the first indication field is 1, it indicates that the paging cause M is carried in the paging message; conversely, when the value of the first indication field is 0, it indicates that the paging cause M is not carried in the paging message.

[0081] In a specific implementation, the base station may also indicate to the user equipment whether the paging cause M is carried in the paging message through higher layer signaling.

[0082] For example, the base station may configure and indicate whether the paging cause M is carried in the paging message through a common message (such as a system message), etc., and then the base station broadcasts the configured common message.

[0083] For another example, the base station may separately send indication information to the user equipment through Radio Resource Control (RRC) dedicated signaling to indicate whether the paging cause M is carried in the paging message.

[0084] In a specific implementation, the base station may also use one bit in the downlink control information scrambled by the P-RNTI for scheduling the paging message to indicate whether the paging cause M is carried in the paging message.

[0085] In an embodiment of the present invention, one bit in the downlink control information scrambled by the P-RNTI for scheduling the paging message may be one bit in the short message in the downlink control information scrambled by the P-RNTI for scheduling the paging message.

[0086] It can be understood that if the paging cause M is not carried in the paging message, the base station may not need to make an indication to reduce the downlink overhead of the base station.

[0087] In the above embodiments of the present invention, it is default that the paging causes corresponding to the target user equipment are the same, and when only one type of paging cause is involved, reserved bit positions are used to indicate the number of target user equipment. Therefore, there is no need to indicate the type corresponding to the paging cause anymore.

[0088] For example, when the paging cause M is set to a voice service, reserved bit positions are used to indicate the number of target user equipment. Therefore, when the value of the reserved bit positions is not all 0, it means that there are target user equipment indicated that the paging cause M is a voice service.

[0089] However, in practical applications, for different user devices, the types of corresponding paging reasons may be different. For example, in a paging message, the paging reasons corresponding to user devices 1 to 4 are voice service, and the paging reasons corresponding to user devices 5 to 10 are messaging service.

[0090] In an embodiment of the present invention, when there are Y different paging reasons, one of the paging reasons can be sent by using the paging reason sending method provided in the above embodiment of the present invention, and the other Y - 1 paging reasons are carried in the paging record.

[0091] For example, the reserved bit in the downlink control information scrambled by P-RNTI for scheduling paging messages is used to indicate that the paging reasons corresponding to user devices 1 to 4 are voice service, and the technical solution specified in the existing protocol is used to indicate that the paging reasons corresponding to user devices 5 to 10 are messaging service.

[0092] Assume that there are a total of 5 paging reasons, and each paging reason requires 3 bits for indication. A certain paging message contains 10 paging records. The first 4 paging records correspond to paging reason 1, and the last 6 paging records correspond to paging reason 2.

[0093] If completely according to the technical solution provided in the prior art, 10×3 = 30 bits need to be added to the paging message.

[0094] By using the technical solution provided in the embodiment of the present invention, since paging reason 1 is implicitly carried by the reserved bit, therefore, the indication of the remaining 4 paging reasons only needs 2 bits to complete. Using the reserved bit to implicitly indicate that the paging reasons corresponding to user devices 1 to 4 are paging reason 1, in the paging message, only 6×2 = 12 bits need to be added. Compared with the 30 bits that need to be added in the prior art, the technical solution provided in the embodiment of the present invention greatly reduces the length of the paging message.

[0095] In the above embodiment of the present invention, the paging reason corresponding to the default reserved bit is fixed. In the next embodiment of the present invention, it is also possible to define that the paging reason corresponding to the reserved bit is variable.

[0096] In a specific implementation, the base station can add a second indication field to the paging message, and characterize the type of the paging reason corresponding to the reserved bit through the value of the second indication field.

[0097] For example, if there are 5 types of paging reasons, 3 bits are required for indication. Therefore, in the paging message, a second indication field is added. The length of the second indication field is 3 bits. When the value of the second indication field is 001, it indicates that paging reason 1 is carried in the paging message; when the value of the second indication field is 010, it indicates that paging reason 2 is carried in the paging message, and so on.

[0098] In a specific implementation, the base station can also indicate to the user equipment the type of paging reason corresponding to the reserved bit through higher-layer signaling.

[0099] For example, the base station can configure, through a common message (such as a system message), that the type of paging reason corresponding to the reserved bit is paging reason 2, and then the base station broadcasts the configured common message.

[0100] For another example, the base station can send indication information to the user equipment respectively through Radio Resource Control (RRC) dedicated signaling to indicate that the type of paging reason corresponding to the reserved bit is paging reason 2.

[0101] In a specific implementation, the base station can also divide the reserved bit into a first part and a second part. The first part is used to indicate the number of target user equipments in the paging record list, and the second part is used to indicate the specific type of paging reason.

[0102] For example, if the reserved bit is 6 bits, the first 4 bits are used to indicate the number of target user equipments, and the last 2 bits are used to indicate the type of paging reason.

[0103] In a specific implementation, a new paging record list can also be added to the existing paging message. The new paging record list carries the paging records with paging reasons, and the paging records in the original paging record list do not have paging reasons.

[0104] In a specific implementation, it can be configured whether the paging message carries the new paging record list.

[0105] In practical applications, it is known that P-RNTI is the paging RNTI, which is used to parse the corresponding Paging Control Channel (PCCH). RNTI is the abbreviation of Radio Network Temporary Identity. PDCCH is the abbreviation of Physical Downlink Control Channel.

[0106] Refer to Figure 2, embodiments of the present invention also provide a method for obtaining paging reasons, which will be described below through specific steps.

[0107] In a specific implementation, the paging reason obtaining method provided in step S201 below can be executed by a baseband chip in a user equipment, or by a chip module including the baseband chip in the user equipment, or by the user equipment.

[0108] Step S201, receive a paging message sent by a base station.

[0109] In a specific implementation, the paging message may include a paging reason M and identification information of a target user equipment. The target user equipment may be a user equipment determined by the base station that needs to indicate the paging reason M, and the paging reason M is one of N paging reasons.

[0110] In a specific implementation, before receiving the paging message, the user equipment may also first receive downlink control information sent by the base station for scheduling the paging message, and the downlink control information carries the number of target user equipments.

[0111] According to the existing NR protocol, a paging message is carried or scheduled by a PDCCH of a Downlink Control Information (DCI) format 1_0 scrambled by a P-RNTI. And there are 6 - 8 bits of reserved bit positions, and the reserved bit positions will also be transmitted. Usually, the reserved bit positions are set to all 0.

[0112] In embodiments of the present invention, after determining the number of target user equipments, the base station may use the reserved bit positions in the P-RNTI scrambled DCI for scheduling the paging message to indicate the number of target user equipments.

[0113] For example, the paging reason M is paging reason 1. If a certain paging message contains 10 paging records, and each paging record corresponds to paging reason 1. Since the decimal number 10 corresponds to the binary number 1010, the value of the reserved bit positions in the P-RNTI scrambled DCI for scheduling the paging message can be set to 1010 (which specific bit positions in the reserved bit positions are used is not limited in the present invention).

[0114] In an existing paging message, it includes a paging record list, and the paging record list includes paging records corresponding to multiple user equipments, but does not carry the paging reason. For example, in an NR system, the paging record list can include at most 32 paging records corresponding to user equipments.

[0115] In an embodiment of the present invention, it may be specified that paging records corresponding to a paging cause are placed in the first part of the paging record list, and paging records without a corresponding paging cause are placed in the second part of the paging record list; or, it may be specified that paging records corresponding to a paging cause are placed in the second part of the paging record list, and paging records without a corresponding paging cause are placed in the first part of the paging record list.

[0116] That is to say, in the paging record list, paging records corresponding to a paging cause and paging records without a paging cause are divided into two parts, and the two parts are independent of each other. In a specific implementation, the position of the paging record corresponding to a paging cause in the paging record list may be predefined. When the user equipment receives the P-RNTI scrambled downlink control information for scheduling a paging message, it can determine whether there is a paging cause and the type of the paging cause according to the position of its corresponding paging record in the paging record list.

[0117] In other words, it is set that the paging message includes the identification information of X user equipments, the number of target user equipments is K, and the identification information of the K target user equipments may be located at the front of the identification information of the X user equipments, or at the end of the identification information of the X user equipments.

[0118] In a specific implementation, the base station may indicate whether the paging message carries a paging cause M. Specifically, the base station may configure whether the paging message carries a paging cause M.

[0119] In an embodiment of the present invention, the base station may indicate whether the paging message carries a paging cause M. The base station may add a first indication field to the paging message, and use the value of the first indication field to represent whether the paging message carries a paging cause M.

[0120] For example, in the paging message, a first indication field is added, the length of the first indication field is 1 bit. When the value of the first indication field is 1, it represents that the paging message carries a paging cause M; on the contrary, when the value of the first indication field is 0, it represents that the paging message does not carry a paging cause M.

[0121] In a specific implementation, the base station may also indicate to the user equipment whether the paging message carries a paging cause M through high-layer signaling.

[0122] For example, the base station may configure, through a common message (such as a system message), to indicate whether the paging message carries a paging cause M, and then the base station broadcasts the configured common message.

[0123] For another example, the base station may send indication information to the user equipment respectively through Radio Resource Control (RRC) dedicated signaling to indicate whether the paging cause M is carried in the paging message.

[0124] In a specific implementation, the base station may also use one bit in the downlink control information scrambled by the P-RNTI for scheduling the paging message to indicate whether the paging cause M is carried in the paging message.

[0125] In the embodiment of the present invention, one bit in the downlink control information scrambled by the P-RNTI for scheduling the paging message may be one bit in the short message in the downlink control information scrambled by the P-RNTI for scheduling the paging message.

[0126] It can be understood that if the paging cause M is not carried in the paging message, the base station may not need to give an indication to reduce the downlink overhead of the base station.

[0127] In the above embodiments of the present invention, it is default that the paging causes corresponding to the target user equipment are the same, and when only for a certain paging cause, the reserved bit is used to indicate the number of target user equipment. Therefore, there is no need to indicate the type corresponding to the paging cause anymore.

[0128] In the above embodiments of the present invention, it is default that the paging cause corresponding to the reserved bit is fixed. In the next embodiment of the present invention, it is also possible to define that the paging cause corresponding to the reserved bit is variable.

[0129] In a specific implementation, the base station may add a second indication field in the paging message, and characterize the type of the paging cause corresponding to the reserved bit through the value of the second indication field.

[0130] For example, if the type of the paging cause is 5, 3 bits are needed for indication. Therefore, in the paging message, a second indication field is added, and the length of the second indication field is 3 bits. When the value of the second indication field is 001, it characterizes that the paging cause 1 is carried in the paging message; when the value of the second indication field is 010, it characterizes that the paging cause 2 is carried in the paging message, and so on.

[0131] In a specific implementation, the base station may also indicate the type of the paging cause corresponding to the reserved bit to the user equipment through higher layer signaling.

[0132] For example, the base station may configure, through a common message (such as a system message), etc., that the type of the paging cause corresponding to the reserved bit is paging cause 2, and then the base station broadcasts the configured common message.

[0133] For another example, the base station may send indication information to the user equipment respectively through Radio Resource Control (RRC) dedicated signaling to indicate that the type of paging cause corresponding to the reserved bit is paging cause 2.

[0134] In a specific implementation, the base station may also divide the reserved bit into a first part and a second part, where the first part is used to indicate the number of target user equipments in the paging record list, and the second part is used to indicate the specific type of paging cause.

[0135] For example, the reserved bit is 6 bits, the first 4 bits are used to indicate the number of target user equipments, and the last 2 bits are used to indicate the type of paging cause.

[0136] In a specific implementation, a new paging record list may also be added to the existing paging message. The new paging record list carries the paging records with paging causes, and the paging records in the original paging record list do not have paging causes.

[0137] In a specific implementation, it may be configured whether to carry the new paging record list in the paging message.

[0138] In a specific implementation, the above step S201 is essentially a paging cause acquisition method executed by the user equipment side, and the above steps S101 to S102 are essentially paging cause acquisition methods executed by the base station side, and the two correspond to each other.

[0139] Referring to Figure 3 , a paging cause sending device 30 in an embodiment of the present invention is given, including: a determination unit 301 and a sending unit 302, where:

[0140] The determination unit 301 is configured to determine a target user equipment that needs to indicate a paging cause M; where the paging cause M is one of N paging causes;

[0141] The sending unit 302 is configured to send a paging message, and the paging message includes the paging cause M and the identification information of the target user equipment.

[0142] In a specific implementation, the specific execution processes of the determination unit 301 and the sending unit 302 may be correspondingly referred to the above steps S101 to S102, and details are not described herein in the embodiments of the present invention.

[0143] In a specific implementation, the above paging cause sending device 30 may correspond to a chip with data processing functions in the base station device; or correspond to a chip module including a chip with data processing functions in the base station device, or correspond to the base station device.

[0144] Referring to Figure 4, a paging reason acquisition device 40 in an embodiment of the present invention is provided, including: a receiving unit 401:

[0145] The receiving unit 401 is configured to receive a paging message sent by a base station. The paging message includes a paging reason M and identification information of a target user equipment. The target user equipment is a user equipment determined by the base station that needs to indicate the paging reason M, and the paging reason M is one of N paging reasons.

[0146] In a specific implementation, the specific execution process of the receiving unit 401 can be correspondingly referred to the above step S401, and details are not described herein in the embodiments of the present invention.

[0147] In a specific implementation, the above paging reason acquisition device 40 may correspond to a chip with data processing functions in a user equipment, such as a baseband chip; or correspond to a chip module including a chip with data processing functions in a user equipment, or correspond to a user equipment.

[0148] An embodiment of the present invention further provides a computer-readable storage medium. The computer-readable storage medium is a non-volatile storage medium or a non-transient storage medium, on which a computer program is stored. When the computer program is run by a processor, it executes the steps of the paging reason sending method provided in any of the above embodiments.

[0149] An embodiment of the present invention further provides a computer-readable storage medium. The computer-readable storage medium is a non-volatile storage medium or a non-transient storage medium, on which a computer program is stored. When the computer program is run by a processor, it executes the steps of the paging reason acquisition method provided in any of the above embodiments.

[0150] An embodiment of the present invention further provides another paging reason sending device, including a memory and a processor. A computer program that can run on the processor is stored on the memory. When the processor runs the computer program, it executes the steps of the paging reason sending method provided in any of the above embodiments.

[0151] An embodiment of the present invention further provides another paging reason acquisition device, including a memory and a processor. A computer program that can run on the processor is stored on the memory. When the processor runs the computer program, it executes the steps of the paging reason acquisition method provided in any of the above embodiments.

[0152] In the LTE era, system messages are sent in a periodic broadcast manner. However, in NR, since beams are introduced and different beams cover different beam directions, system messages need to be sent on each beam. Then, if system messages are also sent in a periodic broadcast manner, they need to be periodically broadcast on each beam. This may result in a huge system overhead and low resource efficiency.

[0153] Therefore, in NR, an on-demand system message sending method is introduced, that is, sending system messages on demand: the system does not periodically broadcast system messages. If a UE has a demand and feeds back its demand to the network, such as by sending a request for a certain SI or SIB through Msg1, Msg3, or RRC signaling, etc., the system will start the periodic broadcast sending of the corresponding SI or SIB, or send the requested SI or SIB to the UE in a unicast manner.

[0154] To support the above on-demand method of sending SI or SIB, in addition to including the correspondence between SI and SIB (that is, which SIBs are included in a SI) in the system message, it also includes whether the SI is sent in a broadcast manner:

[0155]

[0156] When the value of the above si-BroadcastStatus field is "broadcasting", it indicates that the corresponding SI is periodically broadcast; when the value is "notBroadcasting", it indicates that the corresponding SI is sent in an on-demand manner. The value of si-BroadcastStatus changes according to the sending status of the SI: for an SI that was originally sent in an on-demand manner and the system changes its sending method to periodic broadcast, the value of si-BroadcastStatus changes from "notBroadcasting" to "broadcasting"; conversely, for an SI that was originally sent in a periodic broadcast manner and the system changes its sending method to on-demand, the value of si-BroadcastStatus changes from "broadcasting" to "notBroadcasting".

[0157] One important aspect of the SL (Sidelink) enhancements in NR R17 (Release 17) is to support UE-to-network relay, that is, a remote UE can access the mobile communication network through a relay UE. And according to the current standard progress, the relay UE may need to forward the system information obtained from the base station on the SL link (the direct link between the remote UE and the relay UE, and in a broader sense, the direct link between two UEs). Also, the relay UE may send the system information on the SL in an on-demand manner.

[0158] Then, the way the relay UE sends a certain SI on the SL (periodic broadcast or on-demand) can be different from the way the corresponding SI is sent on the Uu link. For example, an SI is sent in a broadcast manner on the Uu link (the link between the relay UE and the base station), but the relay UE may choose to send the SI on the SL in an on-demand manner; or, an SI is sent in an on-demand manner on the Uu link, but the relay UE may choose to send the SI on the SL in a broadcast manner. Of course, the way the relay UE sends a certain SI on the SL (periodic broadcast or on-demand) can also be the same as the way the corresponding SI is sent on the Uu link.

[0159] The problem that this invention focuses on is the situation where the way the relay UE sends a certain SI on the SL (periodic broadcast or on-demand) is different from the way the corresponding SI is sent on the Uu link. The specific solution is as follows:

[0160] For the relay UE (referred to as the first UE):

[0161] Receive the first system information on the Uu link, and the first system information contains the sending status of the second system information; the second system information is a system information different from the first system information.

[0162] In a specific implementation, the first system information is System Information Block 1 (SIB1).

[0163] In a specific implementation, the second system information can be system information other than SIB1 such as SIB2, SIB3, etc., or it can be a system information SI that includes SIB2 or SIB3, etc.

[0164] The transmission status of the second system message refers to whether the second system message is sent in a broadcast manner or on-demand. Sending in a broadcast manner means that the system message is sent in a periodic broadcast manner; sending on-demand means that the system message is sent in a broadcast manner or unicast manner based on the request of the UE.

[0165] The Uu link is the link between the relay UE and the base station. The base station can be an eNB, gNB, ng-eNB, etc., and the present invention does not make any restrictions.

[0166] Send the first system message on the SL link.

[0167] The SL link is the direct connection link between the first UE and the second UE.

[0168] Send the transmission status of the second system message on the SL link on the SL.

[0169] Sending the transmission status of the second system message on the SL link on the SL specifically means sending a message containing the transmission status of the second system message on the SL.

[0170] The transmission status of the second system message on the SL link refers to whether the second system message is sent in a broadcast manner or on-demand on the SL link. Sending in a broadcast manner means that the system message is sent in a periodic broadcast manner; sending on-demand means that the system message is sent in a broadcast manner or unicast manner based on the request of the remote UE (becoming the second UE).

[0171] In a specific implementation, if the transmission status of the second system message on the SL link is the same as the transmission status of the second system message on the Uu link, the relay UE does not need to send the transmission status of the second system message on the SL link on the SL. That is, only when the transmission status of the second system message on the SL link is different from the transmission status of the second system message on the Uu link, does the relay UE need to send the transmission status of the second system message on the SL link on the SL.

[0172] Send the second system message on the SL link.

[0173] In a specific implementation, the relay UE determines the transmission mode of the second system message on the SL link according to the transmission status of the second system message indicated in the first system message on the Uu link and the transmission status of the second system message on the SL. For example, if the transmission status of the second system message indicated in the first system message on the Uu link is to be transmitted in a broadcast manner, however, the transmission status of the second system message on the SL is to be transmitted on demand, then the relay UE transmits the second system message on the SL link in an on-demand manner.

[0174] For another example, if the transmission status of the second system message indicated in the first system message on the Uu link is to be transmitted on demand, however, the transmission status of the second system message on the SL is to be transmitted in a broadcast manner, then the relay UE transmits the second system message on the SL link in a broadcast manner.

[0175] For another example, if the transmission status of the second system message indicated in the first system message on the Uu link is to be transmitted in a broadcast manner, and the transmission status of the second system message on the SL is also to be transmitted in a broadcast manner, then the relay UE transmits the second system message on the SL link in a broadcast manner.

[0176] For another example, if the transmission status of the second system message indicated in the first system message on the Uu link is to be transmitted on demand, and the transmission status of the second system message on the SL is also to be transmitted on demand, then the relay UE transmits the second system message on the SL link in an on-demand manner.

[0177] In a specific implementation, if the relay UE does not send the transmission status of the second system message on the SL, then the relay UE uses the transmission status of the second system message in the first system message on the Uu link as a reference to determine the transmission status of the second system message on the SL link, and transmits the second system message on the SL link according to the corresponding occurrence mode of the determined transmission status of the second system message on the SL link.

[0178] For the remote UE (the second UE):

[0179] Receives the first system message forwarded by the relay UE, and obtains the transmission status of the second system message on the Uu link from the first system message.

[0180] In a specific implementation, the first system message is System Information Block 1 (SIB1).

[0181] In a specific implementation, the second system message may be a system message other than SIB1, such as SIB2 or SIB3, or a system information (SI) message containing SIBs such as SIB2 or SIB3.

[0182] The transmission status of the second system message refers to whether the second system message is transmitted in a broadcast manner or on demand. Transmitting in a broadcast manner means that the system message is transmitted in a periodic broadcast manner; transmitting on demand means that the system message is transmitted in a broadcast manner or a unicast manner based on a UE's request.

[0183] The Uu link is the link between the relay UE and the base station. The base station may be an eNB, a gNB, or an ng-eNB, etc., and the present invention does not make any restrictions.

[0184] Receive the transmission status of the second system message sent by the relay UE on the SL.

[0185] Determine the transmission status of the second system message on the SL according to the transmission status of the second system message on the Uu link obtained from the first system message and the transmission status of the second system message sent by the relay UE on the SL.

[0186] For example, if the transmission status of the second system message obtained from the first system message on the Uu link is transmitted in a broadcast manner, but the transmission status of the second system message on the SL is transmitted on demand, then the relay UE transmits the second system message on the SL link on demand.

[0187] For another example, if the transmission status of the second system message obtained from the first system message on the Uu link is transmitted on demand, but the transmission status of the second system message on the SL is transmitted in a broadcast manner, then the relay UE transmits the second system message on the SL link in a broadcast manner.

[0188] For another example, if the transmission status of the second system message obtained from the first system message on the Uu link is transmitted in a broadcast manner, and the transmission status of the second system message on the SL is also transmitted in a broadcast manner, then the relay UE transmits the second system message on the SL link in a broadcast manner.

[0189] For another example, if the transmission status of the second system message obtained from the first system message on the Uu link is transmitted on demand, and the transmission status of the second system message on the SL is also transmitted on demand, then the relay UE transmits the second system message on the SL link on demand.

[0190] In a specific implementation, if the transmission status of the second system message sent by the relay UE on the SL link is not received on the SL link, the transmission status of the second system message on the Uu link obtained from the first system message is used as the transmission status of the second system message on the SL link.

[0191] It can be considered that for the remote UE, if the transmission status of the second system message sent by the relay UE on the SL link is received, the transmission status of the second system message sent by the relay UE on the SL link is used as the transmission status of the second system message on the SL link; if the transmission status of the second system message sent by the relay UE on the SL link is not received, the transmission status of the second system message included in the first system message forwarded by the relay UE on the Uu link is used as the transmission status of the second system message on the SL link.

[0192] Those of ordinary skill in the art can understand that all or part of the steps in the various methods of the above embodiments can be completed by a program instructing relevant hardware, and the program can be stored in a computer-readable storage medium, and the storage medium can include: ROM, RAM, magnetic disk or optical disk, etc.

[0193] Although the present invention is disclosed as above, the present invention is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, so the protection scope of the present invention should be subject to the scope defined by the claims.

Claims

1. A paging cause sending method, characterized in that, it includes: Determine the target user equipment that needs to indicate the paging cause M; wherein, the paging cause M is one of N paging causes; Send downlink control information, the downlink control information is used to schedule the paging message, and the downlink control information includes the number of the target user equipment; Send a paging message, the paging message is only used to indicate that the paging cause is the paging cause M; the paging message includes the identification information of X user equipments, and the number of the target user equipment is K; the identification information of K target user equipments is at the forefront of the identification information of the X user equipments, or at the end of the identification information of the X user equipments.

2. The paging cause sending method according to claim 1, characterized in that, The determining the target user equipment that needs to indicate the paging cause M includes: Determine the number of target user equipments that need to indicate the paging cause M.

3. The paging cause sending method according to claim 1 or 2, characterized in that, it further includes: Indicate whether the paging cause M is carried in the paging message.

4. The paging cause sending method according to claim 3, characterized in that, The indicating whether the paging cause M is carried in the paging message includes: Configure whether the paging cause M is carried in the paging message.

5. The paging cause sending method according to claim 4, characterized in that, The paging message further includes paging cause indication information, and the paging cause indication information is used to indicate whether the paging message includes the paging cause M.

6. The paging cause sending method according to claim 3, characterized in that, The indicating whether the paging cause M is carried in the paging message includes: Indicate whether the paging cause M is carried in the paging message through high-layer signaling.

7. The paging cause sending method according to claim 3, characterized in that, The indicating whether the paging cause M is carried in the paging message includes: Indicate whether the paging cause M is carried in the paging message through one bit in the downlink control information.

8. The paging cause sending method according to claim 7, characterized in that, One bit in the downlink control information is one bit in the short message.

9. The paging cause sending method according to claim 3, characterized in that, it further includes: When the paging cause M is carried in the paging message, indicate the specific type of the paging cause M.

10. The paging cause sending method according to claim 9, characterized in that, The indicating the specific type of the paging cause includes: Add a second indication field in the paging message, and the value of the second indication field is used to represent the type of the paging cause.

11. The paging cause sending method according to claim 9, characterized in that, The indicating the type of the paging cause includes: Indicate the type of the paging cause to the user equipment through high-layer signaling.

12. The paging cause sending method according to claim 9, characterized in that, The indicating the type of the paging cause includes: Transmit downlink control information, where the downlink control information includes reserved bit positions, the reserved bit positions include a first part and a second part, and the first part is used to indicate the number of target user equipments in the paging record list, and the second part is used to indicate the type of the paging cause.

13. The paging cause transmission method according to claim 1, characterized in that the transmitting the paging message includes: adding a new paging record list to the paging message, and there is a corresponding paging cause for the paging record in the new paging record list, and there is no corresponding paging cause for the paging record in the existing paging record list.

14. The paging cause transmission method according to claim 13, characterized in that it further includes: configuring whether to carry the new paging record list in the paging message.

15. A paging cause acquisition method, characterized in that it includes: receiving downlink control information; receiving a paging message sent by a base station, the paging message is only used to indicate that the paging cause is paging cause M, and the paging cause M is one of N paging causes; the downlink control information is used to schedule the paging message, and the downlink control information includes the number of target user equipments; the paging message includes identification information of X user equipments, and the number of target user equipments is K; the identification information of K target user equipments is at the forefront or at the end of the identification information of the X user equipments.

16. The paging cause acquisition method according to claim 15, characterized in that it further includes: acquiring a paging cause indication message, where the paging cause indication message is used to indicate whether the paging cause M is carried in the paging message.

17. The paging cause acquisition method according to claim 16, characterized in that the acquiring the paging cause indication message includes: acquiring the paging cause indication information from the paging message.

18. The paging cause acquisition method according to claim 16, characterized in that the acquiring the paging cause indication message includes: receiving a high-layer signaling sent by the base station, and the high-layer signaling carries the paging cause indication information.

19. The paging cause acquisition method according to claim 16, characterized in that the acquiring the paging cause indication message includes: receiving downlink control information sent by the base station, and the downlink control information carries the paging cause indication information.

20. The paging cause acquisition method according to claim 19, characterized in that the paging cause indication information is one bit of a short message in the downlink control information.

21. The paging cause acquisition method according to claim 16, characterized in that it further includes: acquiring the type of the paging cause.

22. The paging cause acquisition method according to claim 21, characterized in that the acquiring the type of the paging cause includes: reading a second indication field in the paging message, and the value of the second indication field is used to represent the type of the paging cause.

23. The paging cause acquisition method according to claim 21, characterized in that The types of paging reasons obtained include: receiving high-layer signaling sent by the base station, where the high-layer signaling carries the types of paging reasons.

24. The paging reason obtaining method according to claim 21, wherein, the types of paging reasons obtained include: obtaining the value of a reserved bit, the reserved bit includes a first part and a second part, and the first part is used to indicate the number of target user equipments in the paging record list, and the second part is used to indicate the type of paging reason.

25. The paging reason obtaining method according to claim 16, wherein, receiving the paging message sent by the base station includes: obtaining a new paging record list from the paging message, and there is a corresponding paging reason for the paging records in the new paging record list, while there is no corresponding paging reason for the paging records in the existing paging record list.

26. The paging reason obtaining method according to claim 25, wherein, it further includes: receiving paging record list indication information, where the paging record list indication information is used to indicate whether the paging message carries the new paging record list.

27. A paging reason sending device, wherein, it includes: a determination unit, configured to determine a target user equipment that needs to indicate paging reason M; where the paging reason M is one of N paging reasons; a scheduling unit, configured to send downlink control information, where the downlink control information is used to schedule the paging message, and the downlink control information includes the number of target user equipments; a sending unit, configured to send a paging message, where the paging message is only used to indicate that the paging reason is the paging reason M; the paging message includes identification information of X user equipments, the number of target user equipments is K; the identification information of K target user equipments is at the forefront or at the end of the identification information of the X user equipments.

28. A paging reason obtaining device, wherein, it includes: an obtaining unit, configured to receive downlink control information; a receiving unit, configured to receive a paging message sent by the base station, where the paging message is only used to indicate that the paging reason is paging reason M, and the paging reason M is one of N paging reasons; the downlink control information is used to schedule the paging message, and the downlink control information includes the number of target user equipments; the paging message includes identification information of X user equipments, the number of target user equipments is K; the identification information of K target user equipments is at the forefront or at the end of the identification information of the X user equipments.

29. A computer-readable storage medium, the computer-readable storage medium is a non-volatile storage medium or a non-transient storage medium, on which a computer program is stored, wherein, when the computer program is run by a processor, it executes the steps of the paging reason sending method according to any one of claims 1 to 14.

30. A computer-readable storage medium, which is a non-volatile storage medium or a non-transitory storage medium, and has a computer program stored thereon, characterized in that, when the computer program is run by a processor, it executes the steps of the paging cause obtaining method according to any one of claims 15 to 26.

31. A paging cause sending device, comprising a memory and a processor, and having a computer program stored on the memory that can run on the processor, characterized in that, when the processor runs the computer program, it executes the steps of the paging cause sending method according to any one of claims 1 to 14.

32. A paging cause obtaining device, comprising a memory and a processor, and having a computer program stored on the memory that can run on the processor, characterized in that, when the processor runs the computer program, it executes the steps of the paging cause obtaining method according to any one of claims 15 to 26.

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