WO2025015524A1 - Positioning method, access network device, core network device, and terminal - Google Patents

Abstract

The present disclosure relates to a positioning method, an access network device, a core network device, and a terminal. The method executed by a first access network device comprises: determining positioning signal configuration information, wherein the positioning signal configuration information is used for positioning a terminal in an inactive state; and transmitting the positioning signal configuration information to a core network device and/or the terminal, wherein the first access network device does not have context information of the terminal. Therefore, when the positioning signal configuration information used for positioning the terminal in the inactive state is determined, the first access network device that does not have the context information of the terminal can transmit the positioning signal configuration information to the core network device and/or the terminal, thereby realizing positioning of the terminal, and avoiding positioning failure.

Description

Positioning method, access network equipment, core network equipment, terminal Technical Field

The present disclosure relates to the field of communication technology, and in particular to a positioning method, access network equipment, core network equipment, and a terminal.

Background Art

In the related technology, the terminal can be positioned through a variety of positioning technologies. Among them, for uplink positioning technology and uplink and downlink hybrid positioning technology, the access network device is required to configure the uplink positioning reference signal configuration for the terminal, and the terminal sends an uplink positioning reference signal according to the uplink positioning reference signal configuration.

Summary of the invention

For a terminal in an inactive state, the uplink positioning reference signal sent by the terminal may be received by an access network device that does not have the context information of the terminal. Based on this, after determining the positioning signal configuration information, the access network device that does not have the context information of the terminal cannot determine which terminal and/or which core network device to send it to, which may cause terminal positioning failure.

The embodiments of the present disclosure provide a positioning method, an access network device, a core network device, and a terminal.

According to a first aspect of an embodiment of the present disclosure, a positioning method is proposed, which is executed by a first access network device, and includes: determining positioning signal configuration information, wherein the positioning signal configuration information is used for positioning a terminal in an inactive state; sending the positioning signal configuration information to a core network device and/or a terminal, wherein the first access network device does not have context information of the terminal.

In the above embodiment, the first access network device that does not have the context information of the terminal can send the positioning signal configuration information to the core network device and/or the terminal when determining the positioning signal configuration information for positioning the terminal in an inactive state, so as to realize the positioning of the terminal and avoid positioning failure.

According to a second aspect of an embodiment of the present disclosure, a positioning method is proposed, which is executed by a core network device, and includes: receiving positioning signal configuration information sent by a first access network device or a second access network device, wherein the positioning signal configuration information is used for positioning a terminal in an inactive state, the first access network device does not have context information of the terminal, and the second access network device has context information of the terminal.

In the above embodiment, the core network device can obtain the positioning signal configuration information to realize the positioning of the terminal and avoid positioning failure.

According to a third aspect of an embodiment of the present disclosure, a positioning method is proposed, which is executed by a terminal, and includes: receiving positioning signal configuration information sent by a first access network device, wherein the positioning signal configuration information is used for positioning a terminal in an inactive state, and the first access network device does not have context information of the terminal.

In the above embodiment, the terminal can obtain the positioning signal configuration information to realize the positioning of the terminal and avoid positioning failure.

According to a fourth aspect of an embodiment of the present disclosure, a positioning method is proposed, which is executed by a second access network device, including: receiving a first request message or a second request message sent by a first access network device, wherein the first request message includes positioning signal configuration information and/or reason information for indicating the first request, the positioning signal configuration information is used for positioning a terminal in an inactive state, the second request message is used to indicate obtaining context information of the terminal and/or indicating obtaining information related to positioning, the first access network device does not have the context information of the terminal, and the second access network device has the context information of the terminal.

In the above embodiment, the second access network device can receive the positioning signal configuration information sent by the first access network device, or receive the request for obtaining the context information of the terminal and/or the instruction to obtain the positioning-related information sent by the first access network device to realize the positioning of the terminal and avoid positioning failure.

According to the fifth aspect of an embodiment of the present disclosure, a first access network device is proposed, comprising: a processing module for determining positioning signal configuration information, wherein the positioning signal configuration information is used for positioning a terminal in an inactive state; a transceiver module for sending the positioning signal configuration information to a core network device and/or a terminal, wherein the first access network device does not have context information of the terminal.

According to the sixth aspect of an embodiment of the present disclosure, a core network device is proposed, comprising: a transceiver module, used to receive positioning signal configuration information sent by a first access network device or a second access network device, wherein the positioning signal configuration information is used for positioning a terminal in an inactive state, the first access network device does not have context information of the terminal, and the second access network device has context information of the terminal.

According to the seventh aspect of an embodiment of the present disclosure, a terminal is proposed, comprising: a transceiver module, used to receive positioning signal configuration information sent by a first access network device, wherein the positioning signal configuration information is used for positioning a terminal in an inactive state, and the first access network device does not have context information of the terminal.

According to an eighth aspect of an embodiment of the present disclosure, a second access network device is proposed, comprising: a transceiver module, used to receive a first request message or a second request message sent by a first access network device, wherein the first request message includes positioning signal configuration information and/or information used to indicate a reason for the first request, the positioning signal configuration information is used for positioning a terminal in an inactive state, the second request message is used to indicate obtaining context information of the terminal and/or indicating obtaining information related to positioning, the first access network device does not have the context information of the terminal, and the second access network device has the context information of the terminal.

According to a ninth aspect of an embodiment of the present disclosure, a first access network device is provided, comprising: one or more processors; wherein: The first access network device is used to execute the method described in the first aspect.

According to a tenth aspect of an embodiment of the present disclosure, a core network device is proposed, comprising: one or more processors; wherein the core network device is used to execute the method described in the second aspect.

According to an eleventh aspect of the embodiments of the present disclosure, a terminal is provided, comprising: one or more processors; wherein the terminal is used to execute the method described in the third aspect

According to the twelfth aspect of an embodiment of the present disclosure, a second access network device is proposed, comprising: one or more processors; wherein the second access network device is used to execute the method described in the fourth aspect.

According to the thirteenth aspect of the embodiment of the present disclosure, a storage medium is proposed, which stores instructions. When the instructions are executed on a communication device, the communication device executes the method described in the first aspect, the second aspect, the third aspect, or the fourth aspect.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings required for describing the embodiments are introduced below. The following drawings are only some embodiments of the present disclosure and do not impose specific limitations on the protection scope of the present disclosure.

FIG1 is an architecture diagram of a communication system provided by an embodiment of the present disclosure;

FIG2A is a flow chart of a positioning method provided by an embodiment of the present disclosure;

FIG2B is a flow chart of another positioning method provided by an embodiment of the present disclosure;

FIG2C is a flow chart of another positioning method provided by an embodiment of the present disclosure;

FIG3A is a flow chart of another positioning method provided by an embodiment of the present disclosure;

FIG3B is a flow chart of another positioning method provided by an embodiment of the present disclosure;

FIG3C is a flow chart of another positioning method provided by an embodiment of the present disclosure;

FIG3D is a flow chart of another positioning method provided by an embodiment of the present disclosure;

FIG4 is a flow chart of another positioning method provided by an embodiment of the present disclosure;

FIG5 is a flow chart of another positioning method provided by an embodiment of the present disclosure;

FIG6 is a flow chart of another positioning method provided by an embodiment of the present disclosure;

FIG7A is a flowchart of another positioning method provided by an embodiment of the present disclosure;

FIG7B is a flow chart of another positioning method provided by an embodiment of the present disclosure;

FIG7C is a flowchart of another positioning method provided by an embodiment of the present disclosure;

FIG8A is a structural diagram of a first access network device provided in an embodiment of the present disclosure;

FIG8B is a structural diagram of a core network device provided in an embodiment of the present disclosure;

FIG8C is a structural diagram of a terminal provided by an embodiment of the present disclosure;

FIG8D is a structural diagram of a second access network device provided in an embodiment of the present disclosure;

FIG9A is a structural diagram of a communication device provided by an embodiment of the present disclosure;

FIG. 9B is a schematic diagram of the structure of a chip provided in an embodiment of the present disclosure.

DETAILED DESCRIPTION

The embodiments of the present disclosure provide a positioning method, an access network device, a core network device, and a terminal.

In a first aspect, an embodiment of the present disclosure proposes a positioning method, which is executed by a first access network device, and includes: determining positioning signal configuration information, wherein the positioning signal configuration information is used for positioning a terminal in an inactive state; sending the positioning signal configuration information to a core network device and/or a terminal, wherein the first access network device does not have context information of the terminal.

In the above embodiment, the first access network device that does not have the context information of the terminal can send the positioning signal configuration information to the core network device and/or the terminal when determining the positioning signal configuration information for positioning the terminal in an inactive state, so as to realize the positioning of the terminal and avoid positioning failure.

In combination with some embodiments of the first aspect, in some embodiments, the above method also includes: sending a first request message to a second access network device, wherein the first request message includes positioning signal configuration information and/or reason information for indicating the first request, and the second access network device has context information of the terminal.

In the above embodiment, the first access network device may send the positioning signal configuration information to the second access network device, so that the second access network device sends the positioning signal configuration information to the core network device, thereby locating the terminal and avoiding positioning failure.

In combination with some embodiments of the first aspect, in some embodiments, sending positioning signal configuration information to a core network device includes: sending the positioning signal configuration information to the core network device through a second access network device.

In the above embodiment, the first access network device can send the positioning signal configuration information to the core network device through the second access network device, so as to realize the positioning of the terminal and avoid positioning failure.

In combination with some embodiments of the first aspect, in some embodiments, the method further includes: receiving a second access network device sent A first response message, wherein the first response message includes positioning signal configuration information.

In combination with some embodiments of the first aspect, in some embodiments, sending positioning signal configuration information to the terminal includes: sending a first wireless resource control RRC message to the terminal, wherein the first RRC message includes the positioning signal configuration information, and the first RRC message is generated by the second access network device and sent to the first access network device.

In the above embodiment, the first access network device may receive a first response message including a first RRC message sent by the second access network device to send the first RRC message to the terminal to locate the terminal and avoid positioning failure.

In combination with some embodiments of the first aspect, in some embodiments, the above method also includes: sending a second request message to a second access network device, wherein the second request message is used to indicate acquisition of context information of the terminal and/or indicate acquisition of positioning-related information; receiving a second response message sent by the second access network device; and determining the core network device/or terminal based on the second response message.

In the above embodiment, the first access network device can request to obtain the context of the terminal and/or obtain positioning-related information to determine the core network device and/or terminal involved in positioning the terminal, and send positioning signal configuration information to the core network device and/or terminal determined to participate in positioning the terminal, so as to realize the positioning of the terminal and avoid positioning failure.

In combination with some embodiments of the first aspect, in some embodiments, the second response message includes at least one of the following:

Identification of core network equipment;

An identifier of a first network element of a core network device;

An identifier of a second network element of a core network device;

The terminal's identification;

The identifier of the specific session to which the location is related.

In the above embodiment, the first access network device receives the second response message and can determine the core network device and/or terminal that participates in positioning the terminal based on the content included in the second response message.

In combination with some embodiments of the first aspect, in some embodiments, sending positioning signal configuration information to a core network device includes: sending a first message to the core network device, wherein the first message is a message related to the terminal, and the first message includes the positioning signal configuration information.

In the above embodiment, the first access network device may use the first message related to the terminal to send the positioning signal configuration information to the core network device.

In combination with some embodiments of the first aspect, in some embodiments, the above method also includes: receiving first indication information sent by the terminal; determining at least one of the positioning signal configuration information, core network equipment, and the terminal based on the first indication information.

In the above embodiment, the first access network device may determine at least one of the positioning signal configuration information, the core network device involved in positioning the terminal, and the terminal involved in positioning the terminal based on the first indication information sent by the terminal.

In conjunction with some embodiments of the first aspect, in some embodiments, the first indication information includes at least one of the following:

Identification of core network equipment;

An identifier of a first network element of a core network device;

An identifier of a second network element of a core network device;

The terminal's identification;

Locating the identity of a specific session of interest;

Selected positioning signal information.

In combination with some embodiments of the first aspect, in some embodiments, sending positioning signal configuration information to a core network device includes: sending a second message to the core network device, wherein the second message is a non-terminal related message, and the second message includes the positioning signal configuration information.

In the above embodiment, the first access network device may use a non-terminal related message to send the positioning signal configuration information to the core network device.

In combination with some embodiments of the first aspect, in some embodiments, sending positioning signal configuration information to a terminal includes: sending a second RRC message to the terminal, wherein the second RRC message includes the positioning signal configuration information, and the second RRC message is generated by the first access network device.

In the above embodiment, the first access network device may generate a second RRC message and send it to the terminal.

In combination with some embodiments of the first aspect, in some embodiments, the above method also includes: receiving second indication information sent by the terminal; and determining the positioning signal configuration information according to the second indication information.

In the above embodiment, the first access network device may determine the positioning signal configuration information based on the second indication information sent by the terminal.

In conjunction with some embodiments of the first aspect, in some embodiments, the positioning signal configuration information includes at least one of the following:

The identification information of the sounding reference signal SRS configuration;

Spatial relationship information;

Power control information;

Path loss information;

Time calibration timer TA timer information.

In a second aspect, an embodiment of the present disclosure proposes a positioning method, which is executed by a core network device, and includes: receiving positioning signal configuration information sent by a first access network device or a second access network device, wherein the positioning signal configuration information is used for positioning a terminal in an inactive state, the first access network device does not have context information of the terminal, and the second access network device has context information of the terminal.

In the above embodiment, the core network device can obtain the positioning signal configuration information to realize the positioning of the terminal and avoid positioning failure.

In combination with some embodiments of the second aspect, in some embodiments, receiving the positioning signal configuration information sent by the second access network device includes: receiving a third message sent by the second access network device, wherein the third message is a terminal-related message, and the third message includes the positioning signal configuration information, wherein the positioning signal configuration information is determined by the first access network device and sent to the second access network device.

In combination with some embodiments of the second aspect, in some embodiments, receiving positioning signal configuration information sent by a first access network device includes: receiving a first message sent by the first access network device, wherein the first message is a message related to the terminal, and the first message includes the positioning signal configuration information.

In combination with some embodiments of the second aspect, in some embodiments, receiving positioning signal configuration information sent by a first access network device includes: receiving a second message sent by the first access network device, wherein the second message is a non-terminal related message, and the second message includes the positioning signal configuration information.

In combination with some embodiments of the second aspect, in some embodiments, the above method further includes: sending location service related information to the terminal, wherein the location service related information includes an identifier of a specific positioning-related session.

In conjunction with some embodiments of the second aspect, in some embodiments, the positioning signal configuration information includes at least one of the following:

Identification information of SRS configuration;

Spatial relationship information;

Power control information;

Path loss information;

TA timer information.

In a third aspect, an embodiment of the present disclosure proposes a positioning method, which is executed by a terminal, and includes: receiving positioning signal configuration information sent by a first access network device, wherein the positioning signal configuration information is used for positioning a terminal in an inactive state, and the first access network device does not have context information of the terminal.

In the above embodiment, the terminal can obtain the positioning signal configuration information to realize the positioning of the terminal and avoid positioning failure.

In combination with some embodiments of the third aspect, in some embodiments, receiving positioning signal configuration information sent by a first access network device includes: receiving a first RRC message sent by the first access network device, wherein the first RRC message includes the positioning signal configuration information, the first RRC message is generated by a second access network device and sent to the first access network device, and the second access network device has context information of the terminal.

In combination with some embodiments of the third aspect, in some embodiments, the above method also includes: sending first indication information to the first access network device, wherein the first indication information is used by the first access network device to determine at least one of the positioning signal configuration information, the core network device, and the terminal.

In conjunction with some embodiments of the third aspect, in some embodiments, the first indication information includes at least one of the following:

Identification of core network equipment;

An identifier of a first network element of a core network device;

An identifier of a second network element of a core network device;

The terminal's identification;

Locating the identity of a specific session of interest;

Selected positioning signal information.

In combination with some embodiments of the third aspect, in some embodiments, the above method also includes: receiving location service related information sent by a core network device, wherein the location service related information includes an identifier of a specific positioning-related session.

In combination with some embodiments of the third aspect, in some embodiments, receiving positioning signal configuration information sent by a first access network device includes: receiving a second RRC message sent by the first access network device, wherein the second RRC message includes the positioning signal configuration information, and the second RRC message is generated by the first access network device.

In combination with some embodiments of the third aspect, in some embodiments, the above method also includes: sending second indication information to the first access network device, wherein the second indication information is used by the first access network device to determine the positioning signal configuration information.

In conjunction with some embodiments of the third aspect, in some embodiments, the positioning signal configuration information includes at least one of the following:

Identification information of SRS configuration;

Spatial relationship information;

Power control information;

Path loss information;

TA timer information.

In a fourth aspect, an embodiment of the present disclosure proposes a positioning method, which is executed by a second access network device, including: receiving a first request message or a second request message sent by a first access network device, wherein the first request message includes positioning signal configuration information and/or information used to indicate the reason for the first request, the positioning signal configuration information is used for positioning a terminal in an inactive state, the second request message is used to indicate obtaining context information of the terminal and/or indicating obtaining positioning-related information, the first access network device does not have the context information of the terminal, and the second access network device has the context information of the terminal.

In the above embodiment, the second access network device can receive the positioning signal configuration information sent by the first access network device, or receive the request for obtaining the context information of the terminal and/or the instruction to obtain the positioning-related information sent by the first access network device to realize the positioning of the terminal and avoid positioning failure.

In combination with some embodiments of the fourth aspect, in some embodiments, the above method also includes: sending positioning signal configuration information to the core network device according to the first request message.

In conjunction with some embodiments of the fourth aspect, in some embodiments, sending positioning signal configuration information to a core network device includes:

A third message is sent to the core network device, wherein the third message is a terminal-related message and includes positioning signal configuration information.

In combination with some embodiments of the fourth aspect, in some embodiments, the above method also includes: sending a first response message to the first access network device, wherein the first response message includes positioning signal configuration information, and the first response message includes a first RRC message.

In combination with some embodiments of the fourth aspect, in some embodiments, the above method also includes: sending a second response message to the first access network device according to the second request message.

In conjunction with some embodiments of the fourth aspect, in some embodiments, the second response message includes at least one of the following:

Identification of core network equipment;

An identifier of a first network element of a core network device;

An identifier of a second network element of a core network device;

The terminal's identification;

The identifier of the specific session to which the location is related.

In conjunction with some embodiments of the fourth aspect, in some embodiments, the positioning signal configuration information includes at least one of the following:

Identification information of SRS configuration;

Spatial relationship information;

Power control information;

Path loss information;

TA timer information.

In a fifth aspect, an embodiment of the present disclosure proposes a first access network device, which includes at least one of a transceiver module and a processing module; wherein the first access network device is used to execute the optional implementation method of the first aspect.

In a sixth aspect, an embodiment of the present disclosure proposes a core network device, which includes at least one of a transceiver module and a processing module; wherein the core network device is used to execute the optional implementation method of the second aspect.

In a seventh aspect, an embodiment of the present disclosure proposes a terminal, which includes at least one of a transceiver module and a processing module; wherein the terminal is used to execute an optional implementation method of the third aspect.

In an eighth aspect, an embodiment of the present disclosure proposes a second access network device, which includes at least one of a transceiver module and a processing module; wherein the second access network device is used to execute the optional implementation method of the fourth aspect.

In a ninth aspect, an embodiment of the present disclosure proposes an access network device, which includes: one or more processors; wherein the access network device is used to execute optional implementation methods of the first and fourth aspects.

In the tenth aspect, an embodiment of the present disclosure proposes a core network device, which includes: one or more processors; wherein the core network device is used to execute the optional implementation method of the second aspect.

In an eleventh aspect, an embodiment of the present disclosure proposes a terminal, which includes: one or more processors; wherein the terminal is used to execute an optional implementation method of the third aspect.

In the twelfth aspect, an embodiment of the present disclosure proposes a communication system, which includes: an access network device, a core network device, and a terminal; wherein the access network device is configured to execute the method described in the optional implementation manner of the first and fourth aspects, the core network device is configured to execute the method described in the optional implementation manner of the second aspect, and the terminal is configured to execute the method described in the optional implementation manner of the third aspect.

In a thirteenth aspect, the present disclosure provides a storage medium, wherein the storage medium stores instructions. When the instructions are in a communication device, When the communication device is running on the equipment, the communication device executes the method described in the optional implementation manners of the first aspect and the second aspect, the third aspect and the fourth aspect.

In a fourteenth aspect, an embodiment of the present disclosure proposes a program product. When the program product is executed by a communication device, the communication device executes the method described in the optional implementation of the first and second aspects, the third and fourth aspects.

In a fifteenth aspect, an embodiment of the present disclosure proposes a computer program, which, when executed on a computer, enables the computer to execute the method described in the optional implementations of the first and second aspects, the third and fourth aspects.

In a sixteenth aspect, an embodiment of the present disclosure provides a chip or a chip system. The chip or chip system includes a processing circuit configured to execute the method described in the optional implementation of the first aspect, the second aspect, the third aspect, and the fourth aspect.

It is understandable that the above-mentioned access network equipment, core network equipment, terminal, communication system, storage medium, program product, computer program, chip or chip system are all used to execute the method proposed in the embodiment of the present disclosure. Therefore, the beneficial effects that can be achieved can refer to the beneficial effects in the corresponding method, which will not be repeated here.

The embodiments of the present disclosure provide a positioning method, an access network device, a core network device, and a terminal. In some embodiments, the terms such as positioning method, information processing method, and communication method can be replaced with each other, the terms such as positioning device, information processing device, and communication device can be replaced with each other, and the terms such as information processing system and communication system can be replaced with each other.

The embodiments of the present disclosure are not exhaustive, but are only illustrative of some embodiments, and are not intended to be a specific limitation on the scope of protection of the present disclosure. In the absence of contradiction, each step in a certain embodiment can be implemented as an independent embodiment, and the steps can be arbitrarily combined. For example, a solution after removing some steps in a certain embodiment can also be implemented as an independent embodiment, and the order of the steps in a certain embodiment can be arbitrarily exchanged. In addition, the optional implementation methods in a certain embodiment can be arbitrarily combined; in addition, the embodiments can be arbitrarily combined, for example, some or all of the steps of different embodiments can be arbitrarily combined, and a certain embodiment can be arbitrarily combined with the optional implementation methods of other embodiments.

In each embodiment of the present disclosure, unless otherwise specified or there is a logical conflict, the terms and/or descriptions between the embodiments are consistent and can be referenced to each other, and the technical features in different embodiments can be combined to form a new embodiment based on their internal logical relationships.

The terms used in the embodiments of the present disclosure are only for the purpose of describing specific embodiments and are not intended to limit the present disclosure.

In the embodiments of the present disclosure, unless otherwise specified, elements expressed in the singular form, such as "a", "an", "the", "above", "said", "aforementioned", "this", etc., may mean "one and only one", or "one or more", "at least one", etc. For example, when using articles such as "a", "an", "the" in English in translation, the noun after the article may be understood as a singular expression or a plural expression.

In the embodiments of the present disclosure, “plurality” refers to two or more.

In some embodiments, terms such as "at least one", "one or more", "a plurality of", "multiple" and the like can be used interchangeably.

In some embodiments, "at least one of A and B", "A and/or B", "A in one case, B in another case", "in response to one case A, in response to another case B", etc., may include the following technical solutions according to the situation: in some embodiments, A (A is executed independently of B); in some embodiments, B (B is executed independently of A); in some embodiments, execution is selected from A and B (A and B are selectively executed); in some embodiments, A and B (both A and B are executed). When there are more branches such as A, B, C, etc., the above is also similar.

In some embodiments, the recording method of "A or B" may include the following technical solutions according to the situation: in some embodiments, A (A is executed independently of B); in some embodiments, B (B is executed independently of A); in some embodiments, execution is selected from A and B (A and B are selectively executed). When there are more branches such as A, B, C, etc., the above is also similar.

The prefixes such as "first" and "second" in the embodiments of the present disclosure are only used to distinguish different description objects, and do not constitute restrictions on the position, order, priority, quantity or content of the description objects. The statement of the description object refers to the description in the context of the claims or embodiments, and should not constitute unnecessary restrictions due to the use of prefixes. For example, if the description object is a "field", the ordinal number before the "field" in the "first field" and the "second field" does not limit the position or order between the "fields", and the "first" and "second" do not limit whether the "fields" they modify are in the same message, nor do they limit the order of the "first field" and the "second field". For another example, if the description object is a "level", the ordinal number before the "level" in the "first level" and the "second level" does not limit the priority between the "levels". For another example, the number of description objects is not limited by the ordinal number, and can be one or more. Taking the "first device" as an example, the number of "devices" can be one or more. In addition, the objects modified by different prefixes may be the same or different. For example, if the description object is "device", then the "first device" and the "second device" may be the same device or different devices, and their types may be the same or different. For another example, if the description object is "information", then the "first information" and the "second information" may be the same information or different information, and their contents may be the same or different.

In some embodiments, “including A”, “comprising A”, “used to indicate A”, and “carrying A” can be interpreted as directly carrying A or indirectly indicating A.

In some embodiments, "in response to ...", "in response to determining ...", "in the case of ...", "when ...", "when ..." The terms "when", "if..." and "if..." are interchangeable.

In some embodiments, terms such as "greater than", "greater than or equal to", "not less than", "more than", "more than or equal to", "not less than", "higher than", "higher than or equal to", "not lower than", and "above" can be replaced with each other, and terms such as "less than", "less than or equal to", "not greater than", "less than", "less than or equal to", "no more than", "lower than", "lower than or equal to", "not higher than", and "below" can be replaced with each other.

In some embodiments, devices and equipment may be interpreted as physical or virtual, and their names are not limited to the names recorded in the embodiments. In some cases, they may also be understood as "equipment", "device", "circuit", "network element", "node", "function", "unit", "section", "system", "network", "chip", "chip system", "entity", "subject", etc.

In some embodiments, "network" can be interpreted as devices included in the network, such as access network equipment, core network equipment, etc.

In some embodiments, "access network device (AN device)" may also be referred to as "radio access network device (RAN device)", "base station (BS)", "radio base station (radio base station)", "fixed station" and in some embodiments may also be understood as "node", "access point (access point)", "transmission point (TP)", "reception point (RP)", "transmission and/or reception point (transmission/reception point, TRP)", "panel", "antenna panel", "antenna array", "cell", "macro cell", "small cell", "femto cell", "pico cell", "sector", "cell group", "serving cell", "carrier", "component carrier", "bandwidth part (bandwidth part, BWP)", etc.

In some embodiments, the term "terminal" or "terminal device" may be referred to as "user equipment (UE)", "user terminal (user terminal)", "mobile station (MS)", "mobile terminal (MT)", subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, handset, user agent, mobile client, client, etc.

In some embodiments, acquisition of data, information, etc. may comply with the laws and regulations of the country where the data is obtained.

In some embodiments, data, information, etc. may be obtained with the user's consent.

In addition, each element, each row, or each column in the table of the embodiments of the present disclosure may be implemented as an independent embodiment, and the combination of any elements, any rows, or any columns may also be implemented as an independent embodiment.

FIG1 is an architecture diagram of a communication system provided by an embodiment of the present disclosure.

As shown in FIG. 1 , the communication system 100 includes a terminal 101 , an access network device 102 , and a core network device 103 .

In some embodiments, the terminal 101 includes, for example, a mobile phone, a wearable device, an Internet of Things device, a car with communication function, a smart car, a tablet computer (Pad), a computer with wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal device in industrial control, a wireless terminal device in self-driving, a wireless terminal device in remote medical surgery, a wireless terminal device in a smart grid, a wireless terminal device in transportation safety, a wireless terminal device in a smart city, and at least one of a wireless terminal device in a smart home, but is not limited to these.

In some embodiments, the terminal may also be referred to as a terminal device, a user device, etc., and the names are interchangeable, and the embodiments of the present disclosure do not impose specific limitations on this.

In some embodiments, the access network device 102 is, for example, a node or device that accesses a terminal to a wireless network. The access network device may include an evolved Node B (eNB), a next generation evolved Node B (ng-eNB), a next generation Node B (gNB), a node B (NB), a home node B (HNB), a home evolved node B (HeNB), a wireless backhaul device, a radio network controller (RNC), a base station controller (BSC), a base transceiver station (BTS), a base band unit (BBU), a mobile switching center, a base station in a 6G communication system, an open base station (Open RAN), a cloud base station (Cloud RAN), a base station in other communication systems, and at least one of an access node in a Wi-Fi system, but is not limited thereto.

In some embodiments, the access network device 102 may also be a satellite.

In some embodiments, the core network device 103 may be a device including multiple network elements, or multiple devices or devices. A group includes multiple network functions. A network element can also be called a network function, which can be virtual or physical. The core network includes, for example, at least one of an Evolved Packet Core (EPC), a 5G Core Network (5GCN), and a Next Generation Core (NGC).

In some embodiments, the network element is, for example, an access and mobility management function (AMF).

In some embodiments, the network element is used for access control and mobility management of the terminal accessing the operator network, including, for example, mobility status management, allocation of user temporary identity, authentication and authorization of users, etc., and its name is not limited thereto.

It can be understood that the communication system described in the embodiment of the present disclosure is for the purpose of more clearly illustrating the technical solution of the embodiment of the present disclosure, and does not constitute a limitation on the technical solution proposed in the embodiment of the present disclosure. A person of ordinary skill in the art can know that with the evolution of the system architecture and the emergence of new business scenarios, the technical solution proposed in the embodiment of the present disclosure is also applicable to similar technical problems.

The following embodiments of the present disclosure may be applied to the communication system 100 shown in FIG1 , or part of the subject, but are not limited thereto. The subjects shown in FIG1 are examples, and the communication system may include all or part of the subjects in FIG1 , or may include other subjects other than FIG1 , and the number and form of the subjects are arbitrary, and the subjects may be physical or virtual, and the connection relationship between the subjects is an example, and the subjects may be connected or disconnected, and the connection may be in any manner, and may be a direct connection or an indirect connection, and may be a wired connection or a wireless connection.

The embodiments of the present disclosure may be applied to Long Term Evolution (LTE), LTE-Advanced (LTE-A), LTE-Beyond (LTE-B), SUPER 3G, IMT-Advanced, the fourth generation mobile communication system (4G), the fifth generation mobile communication system (5G), 5G new radio (NR), Future Radio Access (FRA), New-Radio Access Technology (RAT), New Radio (NR), New radio access (NX), Future generation radio access ... The present invention relates to wireless communication systems such as LTE, Wi-Fi (X), Global System for Mobile communications (GSM (registered trademark)), CDMA2000, Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.20, Ultra-WideBand (UWB), Bluetooth (registered trademark), Public Land Mobile Network (PLMN) network, Device to Device (D2D) system, Machine to Machine (M2M) system, Internet of Things (IoT) system, Vehicle to Everything (V2X), systems using other communication methods, and next-generation systems expanded based on them. In addition, a combination of multiple systems (for example, a combination of LTE or LTE-A with 5G, etc.) may also be applied.

5G new radio (NR) introduces a variety of positioning technologies to achieve terminal positioning. For uplink positioning technology and uplink and downlink hybrid positioning technology, the access network device needs to configure the uplink positioning reference signal configuration for the terminal, and the terminal sends the uplink positioning reference signal according to the uplink positioning reference signal configuration.

In some embodiments, positioning of a terminal in an inactive radio resource control (RRC) state is supported, that is, the terminal can send an uplink positioning reference signal when it is in an RRC inactive state. Exemplarily, when the access network device converts the terminal from an RRC connected state to an RRC inactive state, the access network device configures the uplink positioning reference signal configuration for the terminal through an RRC connection release message, and the detailed configuration may be included in srs-PosRRC-InactiveConfig, and if the terminal performs a cell reselection, the terminal needs to release the uplink positioning reference signal configuration configured by the access network device for the terminal.

In some embodiments, in order to achieve low power high accuracy (LPHA) positioning, the power consumption of the terminal during the positioning process is further reduced, and positioning of terminals in idle and inactive states is supported.

In some embodiments, a sounding reference signal (SRS) validity area is introduced, that is, the SRS validity area can be configured for RRC inactive terminals. When the network configures SRS for the terminal and configures the SRS validity area, if the terminal reselects to another cell, and the other cell is in the SRS validity area, the terminal can continue to use the SRS configuration to transmit the SRS. That is, the SRS validity area indicates that the uplink positioning reference signal is valid within this area.

In some embodiments, the SRS validity area can be configured for the terminal through an RRC release message.

In some embodiments, an uplink positioning reference signal configuration is pre-configured for the terminal, and the pre-configured uplink positioning reference signal configuration may be associated with the SRS validity area or may not be associated with the SRS validity area. For the pre-configured SRS configuration, how to configure the terminal is considered to provide the pre-configured SRS configuration to the terminal through system messages and RRC messages.

For a terminal in an inactive state, the uplink positioning reference signal sent by the terminal may be received by an access network device that does not have the context information of the terminal. Based on this, after determining the positioning signal configuration information, the access network device that does not have the context information of the terminal cannot determine which terminal and/or which core network device to send it to, which may cause terminal positioning failure.

Based on this, the embodiment of the present disclosure provides a positioning method, an access network device, a core network device, and a terminal, wherein the method performed by the first access network device includes: determining positioning signal configuration information, wherein the positioning signal configuration information is used for the terminal in an inactive state The first access network device that does not have the context information of the terminal can send the positioning signal configuration information to the core network device and/or the terminal to realize the positioning of the terminal, thereby avoiding positioning failure.

FIG2A is an interactive schematic diagram of a positioning method according to an embodiment of the present disclosure. As shown in FIG2A , an embodiment of the present disclosure relates to a positioning method, and the method includes:

S201A, the terminal sends first indication information or second indication information to the first access network device.

In some embodiments, the access network device may receive the first indication information or the second indication information sent by the terminal.

In some embodiments, the first indication information is used by the first access network device to determine at least one of the positioning signal configuration information, the core network device, and the terminal.

In some embodiments, the second indication information is used by the first access network device to determine positioning signal configuration information.

In some embodiments, the names of the first indication information and/or the second indication information are not limited, and they may be, for example, first information and/or second information, and so on.

In some embodiments, the first indication information includes at least one of the following:

Identification of core network equipment;

An identifier of a first network element of a core network device;

An identifier of a second network element of a core network device;

The terminal's identification;

Locating the identity of a specific session of interest;

Selected positioning signal information.

In the embodiment of the present disclosure, the first indication information may include an identifier of a core network device. Thus, the first access network device may determine the core network device according to the identifier of the core network device, so as to transmit the positioning signal configuration information to the corresponding core network device and perform positioning-related operations (for example, transmitting the positioning signal configuration information to the access network devices involved in positioning, and calculating the location of the terminal according to the results of the positioning measurement).

In the disclosed embodiment, the first indication information may include an identifier of a first network element of a core network device. Thus, the first access network device may determine the first network element of the core network device according to the identifier of the first network element of the core network device, so as to transmit the positioning signal configuration information to the first network element of the corresponding core network device and perform positioning-related operations.

In the disclosed embodiment, the first indication information may include an identifier of a second network element of the core network device. Thus, the first access network device may determine the second network element of the core network device according to the identifier of the second network element of the core network device, so as to transmit the positioning signal configuration information to the first network element of the corresponding core network device through the second network element, and perform positioning-related operations.

In some embodiments, the first network element of the core network device is a LMF.

In some embodiments, the second network element of the core network device is AMF.

In the disclosed embodiment, the first indication information may include an identifier of the terminal. Thus, the first access network device may determine the terminal according to the identifier of the terminal, and send the identifier of the terminal together with the positioning signal configuration information to the core network device, so that the core network device determines that the positioning signal configuration information is for the terminal and performs positioning-related operations.

In the embodiment of the present disclosure, the first indication information may include an identifier of a specific positioning session. Thus, the first access network device may determine the specific positioning session that needs to be executed according to the identifier of the specific positioning session, and send the identifier of the specific positioning session together with the positioning signal configuration information to the core network device, so that the core network device determines that the positioning signal configuration information is a specific positioning session and performs positioning-related operations.

In the embodiment of the present disclosure, the first indication information may include positioning signal information selected by the terminal. Thus, the first access network device may determine the positioning signal information selected by the terminal according to the first indication information.

In some embodiments, the positioning signal is an SRS signal, but is not limited thereto.

In some embodiments, the core network device sends location service related information to the terminal, wherein the location service related information includes an identifier of a specific positioning-related session.

In the disclosed embodiment of the present invention, the core network device can send location service related information to the terminal, whereby the terminal can receive the location service related information sent by the core network device, determine the identifier of the specific positioning-related session, and then send the first indication information including the identifier of the specific positioning-related session to the first access network device.

In some embodiments, the location service related information sent by the core network device may send a location service (LCS) message or a long term evolution (LTE) positioning protocol (LPP) message, wherein the LPP message or the LCS message includes an identifier of a specific positioning-related session.

In some embodiments, before the terminal sends the first indication information or the second indication information to the first access network device, it can also receive The first access network device sends the candidate positioning signal configuration information, and the terminal determines the selected positioning signal information according to the candidate positioning signal configuration information, and sends the selected positioning signal information to the first access network device.

In some embodiments, the candidate positioning signal configuration information includes one or more positioning signal configurations.

In some embodiments, the selected positioning signal information is at least one configuration selected by the terminal from one or more positioning signal configurations.

Exemplarily, the first access network device sends the candidate positioning signal configuration information to the terminal, and may send the candidate positioning signal configuration information to the terminal in a broadcast manner.

In some embodiments, the positioning signal configuration information may be SRS configuration information.

In some embodiments, the first access network device can send preconfigured SRS information to the terminal via broadcasting. The terminal can select SRS from the preconfigured SRS information and send the selected SRS information to the first access network device. Based on this, the first access network device receives the selected SRS information sent by the terminal and can determine the SRS configuration information.

In some embodiments, the terminal sends an RRC resume request message to the first access network device, wherein the RRC resume request message includes first indication information or second indication information.

S202A, the first access network device determines positioning signal configuration information according to the first indication information or the second indication information, wherein the positioning signal configuration information is used for positioning a terminal in an inactive state.

In the embodiment of the present disclosure, the first access network device may determine the positioning signal configuration information according to the first indication information or the second indication information, wherein the positioning signal configuration information is used for positioning the terminal in an inactive state.

In some embodiments, the positioning signal configuration information includes at least one of the following:

The identification information of the sounding reference signal SRS configuration;

Spatial relationship information;

Power control information;

Path loss information;

Time calibration timer TA timer information.

In the embodiment of the present disclosure, the positioning signal configuration information may include identification information of the SRS configuration.

In the embodiment of the present disclosure, the positioning signal configuration information may include spatial relationship information.

In the embodiment of the present disclosure, the positioning signal configuration information may include power control information.

In the embodiment of the present disclosure, the positioning signal configuration information may include path loss information.

In the embodiment of the present disclosure, the positioning signal configuration information may include time alignment (TA) timer information.

S203A, the first access network device sends a first request message to the second access network device, wherein the first request message includes positioning signal configuration information and/or reason information for indicating the first request, and the second access network device has context information of the terminal.

In an embodiment of the present disclosure, the first access network device may send a first request message to the second access network device, wherein the first request message includes positioning signal configuration information and/or reason information indicating the first request, and the second access network device has context information of the terminal.

In some embodiments, the first access network device may send a first request message to the second access network device when determining the positioning signal configuration information.

In some embodiments, after receiving the RRC recovery request sent by the terminal, the first access network device sends a first request message to the second access network device.

In some embodiments, after receiving the RRC recovery request sent by the terminal, the first access network device can determine a second access network device having context information of the terminal, and then send a first request message to the second access network device.

In some embodiments, the first access network device sends a first request message to the second access network device, and the first request message may be an Xn interface application layer protocol (Xn application protocol, XnAP) retrieve UE context request message.

In some embodiments, the first request message includes positioning signal configuration information.

In some embodiments, when the first access network device determines the positioning signal configuration information, the first access network device may include the positioning signal configuration information in the first request message. In some embodiments, the first request message may include reason information for indicating the first request;

In some embodiments, the reason information indicating the first request is for positioning signal configuration.

In some embodiments, the second access network device may decide whether to perform context relocation of the terminal according to the reason information indicating the first request.

For example, if the reason information for the first request is for SRS configuration, for INACTIVE SRS configuration or for positioning, the second access network device decides not to perform context relocation. For the core network device that manages the terminal, the first access network device that serves the terminal does not change, the path switching process is omitted, and signaling overhead is saved.

For example, if the reason information for the first request is for SRS configuration, for INACTIVE SRS configuration, or for Positioning, the second access network device decides to perform context relocation so that the first access network device serving the terminal can directly communicate with the core network device managing the terminal, thereby improving the efficiency of information transmission and reducing the positioning delay.

S204A, the first access network device sends positioning signal configuration information to the core network device through the second access network device.

In the disclosed embodiment, the first access network device may send positioning signal configuration information to the core network device through the second access network device.

In some embodiments, the second access network device receives the first request message sent by the first access network device, determines the positioning signal configuration information according to the first request message, and then may send the positioning signal configuration information to the core network device.

In some embodiments, the second access network device sends the positioning signal configuration information to the core network device, including: sending a third message to the core network device, wherein the third message is a terminal-related message, and the third message includes the positioning signal configuration information.

In the embodiment of the present disclosure, the second access network device may send a third message to the core network device, wherein the third message is a terminal-related message and includes positioning signal configuration information.

In some embodiments, the third message is a terminal-related message, which may be a new radio (NR) positioning protocol annex (NRPPa) message related to the terminal. Exemplarily, it may be a positioning information update message.

In some embodiments, the third message includes positioning signal configuration information, so that the core network device can determine the positioning signal configuration information and perform further positioning operations.

In some embodiments, if the first request message sent by the first access network device to the second access network device is an XnAP retrieve UE context request message, the second access network device can decide whether to perform relocation after receiving the XnAP retrieve UE context request message.

In some embodiments, when the second access network device determines to perform relocation, the context information of the terminal can be sent to the first access network device. Based on this, the first access network device can directly participate in the positioning process of the terminal.

In some embodiments, when the second access network device determines not to perform relocation, the first request message including the positioning signal configuration information may be sent to the core network device.

S205A, the second access network device sends a first response message to the first access network device, wherein the first response message includes positioning signal configuration information.

In the embodiment of the present disclosure, the second access network device may send a first response message to the first access network device, wherein the first response message includes positioning signal configuration information.

In some embodiments, when the second access network device determines not to perform relocation, it can send a first request message including positioning signal configuration information to the core network device, and send a first response message to the first access network device.

In some embodiments, the first response message may be a Retrieve UE context failure message.

In some embodiments, when the second access network device determines not to perform relocation, it can generate an RRC release message, carry it in the first response message, send it to the first access network device, and then send it to the terminal by the first access network device.

In some embodiments, the RRC Release message includes positioning signal configuration information. In this way, the positioning signal configuration information is sent to the terminal through the RRC message without relocating the terminal context, so as to further perform positioning operations (for example, sending a positioning signal according to the positioning signal configuration information).

S206A, the first access network device sends a first RRC message to the terminal, wherein the first RRC message includes positioning signal configuration information, and the first RRC message is generated by the second access network device and sent to the first access network device.

In an embodiment of the present disclosure, the first access network device may send a first RRC message to the terminal, wherein the first RRC message includes positioning signal configuration information, whereby the terminal may determine the positioning signal configuration information to further perform a positioning operation.

In some embodiments, the first RRC message is generated by the second access network device and sent to the first access network device. Based on this, after the first access network device receives the first RRC message, it can send the first RRC message to the terminal.

In some embodiments, the first RRC message may be an RRC release message.

In some embodiments, the names of information, etc. are not limited to the names recorded in the embodiments, and terms such as "information", "message", "signal", "signaling", "report", "configuration", "indication", "instruction", "command", "channel", "parameter", "domain", "field", "symbol", "symbol", "code element", "codebook", "codeword", "codepoint", "bit", "data", "program", and "chip" can be used interchangeably.

In some embodiments, terms such as "uplink", "uplink", "physical uplink", etc. can be used interchangeably, and terms such as "downlink", "downlink", "physical downlink", etc. can be used interchangeably.

In some embodiments, "obtain", "obtain", "get", "receive", "transmit", "bidirectional transmission", "send and/or receive" can be interchangeable, and can be interpreted as receiving from other entities, obtaining from protocols, obtaining from high levels, obtaining by self-processing, autonomous implementation, etc.

In some embodiments, terms such as "send", "transmit", "report", "send", "transmit", "bidirectional transmission", "send and/or receive" can be used interchangeably.

The communication method involved in the embodiments of the present disclosure may include at least one of S201A to S206A. For example, S201A may be implemented as an independent embodiment, S202A may be implemented as an independent embodiment, S203A may be implemented as an independent embodiment, S204A may be implemented as an independent embodiment, S205A may be implemented as an independent embodiment, S206A may be implemented as an independent embodiment, S202A+S204A may be implemented as an independent embodiment, S202A+S203A+S204A may be implemented as an independent embodiment, S202A+S203A+S204A+S205A may be implemented as an independent embodiment, and S202A+S203A+S204A+S204A+S205A may be implemented as an independent embodiment, but is not limited thereto.

In some embodiments, S201A, S203A, S205A, and S206A are optional, and one or more of these steps may be omitted or replaced in different embodiments.

In some embodiments, reference may be made to other optional implementations described before or after the specification corresponding to FIG. 2A .

FIG2B is an interactive schematic diagram of a positioning method according to an embodiment of the present disclosure. As shown in FIG2B , an embodiment of the present disclosure relates to a positioning method, and the method includes:

S201B, the terminal sends first indication information or second indication information to the first access network device.

Among them, the first indication information is used for the first access network device to determine at least one of the positioning signal configuration information, core network equipment, and terminal, and the second indication information is used for the first access network device to determine the positioning signal configuration information.

S202B: The first access network device determines positioning signal configuration information according to the first indication information or the second indication information, wherein the positioning signal configuration information is used for positioning a terminal in an inactive state.

Among them, the relevant description of S201B and S202B can refer to the relevant description in the above embodiment, and will not be repeated here.

Among them, the relevant descriptions of the first access network device, the second access network device, the first indication information, the second indication information, and the positioning signal configuration information can be found in the relevant descriptions in the above embodiments, and will not be repeated here.

S203B: The first access network device sends a second request message to the second access network device, wherein the second request message includes information for instructing to obtain context information of the terminal and/or information for instructing to obtain positioning-related information.

In the embodiment of the present disclosure, the first access network device may send a second request message to the second access network device, where the second request message is used to instruct the acquisition of context information of the terminal and/or instruct the acquisition of positioning-related information.

In some embodiments, when the first access network device determines the positioning signal configuration information according to the first indication information or the second indication information, the first access network device may send a second request message to the second access network device.

In some embodiments, the first access network device sends a second request message to the second access network device, and the second request message may be an XnAP retrieve UE context request (retrieve UE context request) message.

S204B, the second access network device sends a second response message to the first access network device.

In the embodiment of the present disclosure, the second access network device may send a second response message to the first access network device.

In some embodiments, upon receiving the second request message sent by the first access network device, the second access network device may send a second response message to the first access network device.

In some embodiments, if the second request message received by the second access network device from the first access network device includes information for indicating the acquisition of terminal context information and/or information for indicating the acquisition of positioning-related information, the second access network device sends a second response message to the first access network device based on the information to respond to the second request message.

In some embodiments, if the second request message includes information for instructing to obtain positioning-related information, the second access network device includes the positioning-related information in the second response message.

In some embodiments, the second response message may be a Retrieve UE context response message.

In some embodiments, if the retrieve terminal context request message includes information for instructing to obtain positioning-related information, the second access network device includes the positioning-related information in the retrieve terminal context response message.

In some embodiments, the positioning-related information is used to exchange the terminal positioning-related information between the first access network device and the core network device.

In some embodiments, the positioning-related information includes an LMF identifier, an AMF identifier, a terminal identifier and/or a positioning session identifier.

In some embodiments, if the second request message sent by the first access network device to the second access network device is an XnAP retrieve UE context request message, the second access network device can decide whether to perform relocation after receiving the XnAP retrieve UE context request message.

In some embodiments, when the second access network device determines to perform relocation, the context information of the terminal can be sent to the first access network device, based on which the first access network device can directly perform the positioning process of the terminal.

S205B, the first access network device determines the core network device and/or the terminal according to the second response message.

In the disclosed embodiment, the first access network device may determine the core network device and/or the terminal according to the second response message.

In some embodiments, the first access network device determines the core network device and/or terminal information based on the second response message, and interacts with the core network device based on the information to perform further positioning procedures.

In some embodiments, the first access network device receives a second response message sent by the second access network device and can determine the core network device and/or terminal based on the second response message.

In some embodiments, the second response message includes at least one of the following:

Identification of core network equipment;

An identifier of a first network element of a core network device;

An identifier of a second network element of a core network device;

The terminal's identification;

The identifier of the specific session to which the location is related.

In an embodiment of the present disclosure, the second response message may include an identifier of a core network device, whereby the first access network device may determine the core network device based on the identifier of the core network device, so as to directly send positioning signal configuration information to the core network device, so as to transmit the positioning signal configuration information to the corresponding core network device and perform positioning-related operations (for example, transmitting the positioning signal configuration information to access network devices involved in positioning, and calculating the terminal's position based on the results of positioning measurements).

In the embodiment of the present disclosure, the second response message may include an identifier of the first network element of the core network device, whereby the first access network device can determine the first network element of the core network device based on the identifier of the first network element of the core network device, so as to transmit the positioning signal configuration information to the first network element of the corresponding core network device and perform positioning-related operations.

In some embodiments, the first network element may be LMF, whereby the first access network device may determine LMF according to the identifier of LMF, so as to send positioning signal configuration information to LMF through AMF.

In the disclosed embodiment, the second response message may include an identifier of a second network element of the core network device, whereby the first access network device may determine the second network element of the core network device based on the identifier of the second network element of the core network device, so as to transmit the positioning signal configuration information to the corresponding first network element of the core network device through the second network element to perform positioning-related operations.

In some embodiments, the first network element may be an AMF, whereby the first access network device may determine the AMF according to the identifier of the AMF, so as to send the positioning signal configuration information to the LMF through the AMF.

In an embodiment of the present disclosure, the second response message may include an identifier of the terminal, so that the first access network device can determine the terminal based on the identifier of the terminal to directly send the positioning signal configuration information to the terminal, and send the identifier of the terminal together with the positioning signal configuration information to the core network device, so that the core network device determines that the positioning signal configuration information is for the terminal and performs positioning-related operations.

In an embodiment of the present disclosure, the second response message may include an identifier of a specific positioning-related session, whereby the first access network device may determine the specific positioning-related session that needs to be executed based on the identifier of the specific positioning-related session, and send the identifier of the specific positioning-related session together with the positioning signal configuration information to the core network device, so that the core network device determines that the positioning signal configuration information is a specific positioning session and performs positioning-related operations.

S206B, the first access network device sends a first message to the core network device, wherein the first message is a message related to the terminal and includes positioning signal configuration information.

In an embodiment of the present disclosure, a first access network device may send a first message to a core network device. The first message is a message related to a terminal and includes positioning signal configuration information. Thus, the core network device may receive the positioning signal configuration information to perform further positioning operations.

In some embodiments, after receiving the second response message sent by the second access network device and determining the core network device, the first access network device may send the first message to the core network device.

In some embodiments, the first message is a message related to the terminal. Exemplarily, the first message is an NRPPa message related to the terminal, such as a positioning information update message.

In some embodiments, the first message includes positioning signal configuration information.

S207B, the first access network device sends a second RRC message to the terminal, wherein the second RRC message includes positioning signal configuration information, and the second RRC message is generated by the first access network device.

In an embodiment of the present disclosure, the first access network device may send a second RRC message to the terminal, the second RRC message including positioning signal configuration information, and the second RRC message is generated by the first access network device, so that the terminal may receive the positioning signal configuration information to perform further positioning operations.

In some embodiments, the second RRC message may be an RRC release message generated by the first access network device.

In some embodiments, the RRC Release message includes positioning signal configuration information, so that in the case of terminal context relocation, the positioning signal configuration information is sent to the terminal through the RRC message to further perform positioning operations (for example, For example, sending a positioning signal according to the positioning signal configuration information).

In some embodiments, the names of information, etc. are not limited to the names recorded in the embodiments, and terms such as "information", "message", "signal", "signaling", "report", "configuration", "indication", "instruction", "command", "channel", "parameter", "domain", "field", "symbol", "symbol", "code element", "codebook", "codeword", "codepoint", "bit", "data", "program", and "chip" can be used interchangeably.

In some embodiments, terms such as "uplink", "uplink", "physical uplink", etc. can be used interchangeably, and terms such as "downlink", "downlink", "physical downlink", etc. can be used interchangeably.

In some embodiments, "obtain", "obtain", "get", "receive", "transmit", "bidirectional transmission", "send and/or receive" can be interchangeable, and can be interpreted as receiving from other entities, obtaining from protocols, obtaining from high levels, obtaining by self-processing, autonomous implementation, etc.

In some embodiments, terms such as "send", "transmit", "report", "send", "transmit", "bidirectional transmission", "send and/or receive" can be used interchangeably.

The communication method involved in the embodiments of the present disclosure may include at least one of S201B to S207B. For example, S201B may be implemented as an independent embodiment, S202B may be implemented as an independent embodiment, S203B may be implemented as an independent embodiment, S204B may be implemented as an independent embodiment, S205B may be implemented as an independent embodiment, S206B may be implemented as an independent embodiment, S207B may be implemented as an independent embodiment, S202A+S206B may be implemented as an independent embodiment, S202B+S203B+S204B+S205B+S206B may be implemented as an independent embodiment, but are not limited thereto.

In some embodiments, S201B, S203B, S204B, S206B, and S207B are optional, and one or more of these steps may be omitted or replaced in different embodiments.

In some embodiments, reference may be made to other optional implementations recorded before or after the specification corresponding to FIG. 2B .

FIG2C is an interactive schematic diagram of a positioning method according to an embodiment of the present disclosure. As shown in FIG2C , an embodiment of the present disclosure relates to a positioning method, and the method includes:

S201C, the terminal sends first indication information to the first access network device, wherein the first indication information is used by the first access network device to determine at least one of the positioning signal configuration information, the core network device, and the terminal.

S202C, the first access network device determines the positioning signal configuration information, core network equipment, and terminal according to the first indication information.

Among them, the relevant descriptions of S201C and S202C can refer to the relevant descriptions in the above embodiments, and will not be repeated here.

Among them, the relevant descriptions of the first access network device, the second access network device, the first indication information, and the positioning signal configuration information can be found in the relevant descriptions in the above embodiments, and will not be repeated here.

In the embodiment of the present disclosure, the first access network device can determine the positioning signal configuration information, the core network device, and the terminal according to the first indication information.

S203C, the first access network device sends a second message to the core network device, wherein the second message is a non-terminal related message and includes positioning signal configuration information.

In an embodiment of the present disclosure, the first access network device may send a second message to the core network device, wherein the second message is a non-terminal related message and includes positioning signal configuration information.

In some embodiments, the second message is a non-terminal related message. Exemplarily, the second message may be a non-terminal related NRPPa message.

In some embodiments, the second message includes positioning signal configuration information. Thus, the core network device can determine the positioning signal configuration information to perform subsequent positioning operations.

In some embodiments, when the first access network device determines the core network device and the positioning signal configuration information based on the first indication information, the first access network device can send a second message to the core network device. Thus, the first access network device does not need to obtain the context of the terminal, and can also interact with the core network device of the terminal to exchange positioning information to complete the positioning process when the terminal is in an inactive state, thereby saving terminal power and signaling overhead between network devices.

S204C, the first access network device sends a second RRC message to the terminal, wherein the second RRC message includes positioning signal configuration information, and the second RRC message is generated by the first access network device.

In an embodiment of the present disclosure, the first access network device may send a second RRC message to the terminal, the second RRC message including positioning signal configuration information, and the second RRC message is generated by the first access network device, so that the terminal may receive the positioning signal configuration information to perform further positioning operations.

In some embodiments, the second RRC message may be an RRC release message generated by the first access network device.

In some embodiments, the names of information, etc. are not limited to the names described in the embodiments, such as "information", "message", etc. The terms “message”, “signal”, “signaling”, “report”, “configuration”, “indication”, “instruction”, “command”, “channel”, “parameter”, “domain”, “field”, “symbol”, “symbol”, “codebook”, “codeword”, “codepoint”, “bit”, “data”, “program”, and “chip” are used interchangeably.

In some embodiments, terms such as "uplink", "uplink", "physical uplink", etc. can be used interchangeably, and terms such as "downlink", "downlink", "physical downlink", etc. can be used interchangeably.

In some embodiments, "obtain", "obtain", "get", "receive", "transmit", "bidirectional transmission", "send and/or receive" can be interchangeable, and can be interpreted as receiving from other entities, obtaining from protocols, obtaining from high levels, obtaining by self-processing, autonomous implementation, etc.

In some embodiments, terms such as "send", "transmit", "report", "send", "transmit", "bidirectional transmission", "send and/or receive" can be used interchangeably.

The communication method involved in the embodiments of the present disclosure may include at least one of S201C to S204C. For example, S201C may be implemented as an independent embodiment, S202C may be implemented as an independent embodiment, S203C may be implemented as an independent embodiment, S204C may be implemented as an independent embodiment, S202C+S203C may be implemented as an independent embodiment, and S202C+S203C+S204C may be implemented as an independent embodiment, but are not limited thereto.

In some embodiments, S201C, S204C are optional, and one or more of these steps may be omitted or replaced in different embodiments.

In some embodiments, reference may be made to other optional implementations recorded before or after the specification corresponding to FIG. 2C .

FIG3A is a flow chart of a positioning method according to an embodiment of the present disclosure. As shown in FIG3A , the embodiment of the present disclosure relates to a positioning method, which is executed by a first access network device and includes:

S301A, determining positioning signal configuration information, wherein the positioning signal configuration information is used for positioning a terminal in an inactive state.

In the disclosed embodiment, the first access network device may determine positioning signal configuration information, where the positioning signal configuration information is used for positioning a terminal in an inactive state.

In some embodiments, the positioning signal configuration information includes at least one of the following:

The identification information of the sounding reference signal SRS configuration;

Spatial relationship information;

Power control information;

Path loss information;

Time calibration timer TA timer information.

It is understandable that there are many ways for the first access network device to determine the positioning signal configuration information.

Exemplarily, the first access network device may receive relevant information sent by the terminal and determine the positioning signal configuration information.

Exemplarily, the first access network device may receive positioning signal configuration information sent by the second access network device and determine the positioning signal configuration information, wherein the second access network device has context information of the terminal.

Of course, the above examples are only for illustration and are not intended to be specific limitations on the embodiments of the present disclosure. Other methods may also be used.

In some embodiments, the access network device receives first indication information sent by the terminal; and determines at least one of the positioning signal configuration information, the core network device, and the terminal according to the first indication information.

In some embodiments, the first indication information includes at least one of the following:

Identification of core network equipment;

An identifier of a first network element of a core network device;

An identifier of a second network element of a core network device;

The terminal's identification;

Locating the identity of a specific session;

Selected positioning signal information.

S302A: Send positioning signal configuration information to a core network device and/or a terminal, wherein the first access network device does not have context information of the terminal.

In an embodiment of the present disclosure, the first access network device may send positioning signal configuration information to the core network device and/or the terminal, wherein the first access network device does not have context information of the terminal.

It is understandable that the first access network device can determine the terminal and the core network device serving the terminal, and then when determining the positioning signal configuration information for positioning the terminal in an inactive state, the positioning signal configuration information can be sent to the core network device and/or the terminal.

In some embodiments, the first access network device may obtain information about the terminal and/or the core network device from the second access network device having the context information of the terminal to determine the core network device and/or the terminal.

In some embodiments, the first access network device sends the positioning signal configuration information to the core network device, and may also send the positioning signal configuration information to the core network device through the second access network device.

In some embodiments, the signaling or message used by the first access network device to send the positioning signal configuration information to the terminal can be generated by the second access network device having the context information of the terminal and forwarded to the first access network device, and sent to the terminal by the first access network.

Among them, the optional implementation methods of S301A to S302A can refer to the optional implementation methods of Figures 2A to 2C, and other related parts in the embodiments involved, and will not be repeated here.

It should be noted that the relevant descriptions of S301A to S302A can refer to the relevant descriptions in the above embodiments, which will not be repeated here.

By implementing the embodiments of the present disclosure, the first access network device that does not have the context information of the terminal can send the positioning signal configuration information to the core network device and/or the terminal to realize the positioning of the terminal when determining the positioning signal configuration information for positioning the terminal in an inactive state, thereby avoiding positioning failure.

FIG3B is a flow chart of a positioning method according to an embodiment of the present disclosure. As shown in FIG3B , the embodiment of the present disclosure relates to a positioning method, which is performed by a first access network device and includes:

S301B, determining positioning signal configuration information, wherein the positioning signal configuration information is used for positioning a terminal in an inactive state.

S302B, sending a first request message to the second access network device, wherein the first request message includes positioning signal configuration information and/or reason information for indicating the first request, and the second access network device has context information of the terminal.

S303B: Send positioning signal configuration information to the core network device through the second access network device.

S304B, receiving a first response message sent by the second access network device, wherein the first response message includes positioning signal configuration information.

S305B, sending a first radio resource control RRC message to the terminal, wherein the first RRC message includes positioning signal configuration information, and the first RRC message is generated by the second access network device and sent to the first access network device.

Among them, the optional implementation methods of S301B to S305B can refer to the optional implementation methods of Figures 2A to 2C, and other related parts in the embodiments involved, and will not be repeated here.

Among them, the relevant descriptions of S301B to S305B can refer to the relevant descriptions in the above embodiments, and will not be repeated here.

The execution sequence of S301B to S305B may also adopt other sequences, for example, S305B is executed first and S304B is executed later, or S304B and S305B are executed simultaneously, and the embodiment of the present disclosure does not impose any specific limitation on this.

Among them, S304B and S305B are optional, and one or more of these steps may be omitted or replaced in different embodiments.

By implementing the embodiments of the present disclosure, the first access network device that does not have the context information of the terminal can send the positioning signal configuration information to the core network device and/or the terminal to realize the positioning of the terminal when determining the positioning signal configuration information for positioning the terminal in an inactive state, thereby avoiding positioning failure.

FIG3C is a flow chart of a positioning method according to an embodiment of the present disclosure. As shown in FIG3C , the embodiment of the present disclosure relates to a positioning method, which is performed by a first access network device and includes:

S301C, determining positioning signal configuration information, wherein the positioning signal configuration information is used for positioning a terminal in an inactive state.

S302C: Send a second request message to the second access network device, where the second request message is used to instruct acquisition of context information of the terminal and/or instruct acquisition of positioning-related information.

S303C, receiving a second response message sent by the second access network device.

In some embodiments, the second response message includes at least one of the following:

Identification of core network equipment;

An identifier of a first network element of a core network device;

An identifier of a second network element of a core network device;

The terminal's identification;

The identifier of the specific session to which the location is related.

S304C: Determine the core network device and/or terminal according to the second response message.

S305C, sending a first message to the core network device, wherein the first message is a message related to the terminal, and the first message includes positioning signal configuration information.

S306C: Send a second RRC message to the terminal, wherein the second RRC message includes positioning signal configuration information, and the second RRC message is generated by the first access network device.

Among them, the optional implementation methods of S301C to S306C can refer to the optional implementation methods of Figures 2A to 2C, and other related parts in the embodiments involved, and will not be repeated here.

Among them, the relevant descriptions of S301C to S306C can refer to the relevant descriptions in the above embodiments, and will not be repeated here.

The execution order of S301C to S306C may also adopt other orders, for example, S306C is executed first and S305C is executed later, or S305C and S306C are executed at the same time, and the embodiment of the present disclosure does not make any specific limitation on this.

Among them, S305C and S306C are optional, and one or more of these steps may be omitted or replaced in different embodiments.

By implementing the embodiments of the present disclosure, the first access network device that does not have the context information of the terminal can send the positioning signal configuration information to the core network device and/or the terminal to realize the positioning of the terminal when determining the positioning signal configuration information for positioning the terminal in an inactive state, thereby avoiding positioning failure.

FIG3D is a flow chart of a positioning method according to an embodiment of the present disclosure. As shown in FIG3D , the embodiment of the present disclosure relates to a positioning method, which is executed by a first access network device and includes:

S301D, receiving first indication information sent by the terminal.

In some embodiments, the first indication information includes at least one of the following:

Identification of core network equipment;

An identifier of a first network element of a core network device;

An identifier of a second network element of a core network device;

The terminal's identification;

Locating the identity of a specific session of interest;

Selected positioning signal information.

S302D: Determine at least one of the positioning signal configuration information, core network equipment, and terminal according to the first indication information.

S303D, sending a second message to the core network device, wherein the second message is a non-terminal related message and includes positioning signal configuration information.

S304D, sending a second RRC message to the terminal, wherein the second RRC message includes positioning signal configuration information, and the second RRC message is generated by the first access network device.

Among them, the optional implementation methods of S301D to S304D can refer to the optional implementation methods of Figures 2A to 2C, and other related parts in the embodiments involved, and will not be repeated here.

Among them, the relevant descriptions of S301D to S304D can be found in the relevant descriptions in the above embodiments, and will not be repeated here.

Among them, the execution order of S301D to S304D can also adopt other orders, for example, S304D is executed first and S303D is executed later, or S303D and S304D are executed at the same time, and the embodiment of the present disclosure does not make specific limitations on this.

Among them, S301D, S303D and S304D are optional, and one or more of these steps may be omitted or replaced in different embodiments.

By implementing the embodiments of the present disclosure, the first access network device that does not have the context information of the terminal can send the positioning signal configuration information to the core network device and/or the terminal to realize the positioning of the terminal when determining the positioning signal configuration information for positioning the terminal in an inactive state, thereby avoiding positioning failure.

FIG4 is a flow chart of a positioning method according to an embodiment of the present disclosure. As shown in FIG4, an embodiment of the present disclosure relates to a positioning method, which is executed by a core network device and includes:

S401: Acquire positioning signal configuration information, where the positioning signal configuration information is used for positioning a terminal in an inactive state.

In some embodiments, the core network device receives positioning signal configuration information sent by the first access network device or the second access network device, wherein the positioning signal configuration information is used for positioning a terminal in an inactive state, the first access network device does not have context information of the terminal, and the second access network device has context information of the terminal.

In some embodiments, the core network device may also receive positioning signal configuration information sent by other entities.

In some embodiments, the core network device receives the positioning signal configuration information sent by the second access network device, including: receiving a third message sent by the second access network device, wherein the third message is a terminal-related message, and the third message includes the positioning signal configuration information, wherein the positioning signal configuration information is determined by the first access network device and sent to the second access network device.

In some embodiments, the core network device receives the positioning signal configuration information sent by the first access network device, including: receiving a first message sent by the first access network device, wherein the first message is a message related to the terminal, and the first message includes the positioning signal configuration information.

In some embodiments, the core network device receives the positioning signal configuration information sent by the first access network device, including: receiving a second message sent by the first access network device, wherein the second message is a non-terminal related message and includes the positioning signal configuration information.

In some embodiments, the core network device sends location service related information to the terminal, wherein the location service related information includes the location service related information. The identifier of a specific session to which the bits are related.

In some embodiments, the positioning signal configuration information includes at least one of the following:

Identification information of SRS configuration;

Spatial relationship information;

Power control information;

Path loss information;

TA timer information.

Among them, the optional implementation method of S401 can refer to the optional implementation method of Figures 2A to 2C, and other related parts in the embodiments involved, which will not be repeated here.

By implementing the embodiments of the present disclosure, the core network device can obtain positioning signal configuration information to achieve positioning of the terminal and avoid positioning failure.

FIG5A is a flow chart of a positioning method according to an embodiment of the present disclosure. As shown in FIG5A , the embodiment of the present disclosure relates to a positioning method, which is executed by a terminal and includes:

S501: Acquire positioning signal configuration information, where the positioning signal configuration information is used for positioning a terminal in an inactive state.

In some embodiments, the terminal receives positioning signal configuration information sent by the first access network device, wherein the positioning signal configuration information is used for positioning the terminal in an inactive state, and the first access network device does not have context information of the terminal.

In some embodiments, the terminal receives the positioning signal configuration information sent by the first access network device, including: receiving a first RRC message sent by the first access network device, wherein the first RRC message includes the positioning signal configuration information, the first RRC message is generated by the second access network device and sent to the first access network device, and the second access network device has the context information of the terminal.

In some embodiments, the terminal sends first indication information to the first access network device, wherein the first indication information is used by the first access network device to determine at least one of the positioning signal configuration information, the core network device, and the terminal.

In some embodiments, the first indication information includes at least one of the following:

Identification of core network equipment;

An identifier of a first network element of a core network device;

An identifier of a second network element of a core network device;

The terminal's identification;

Locating the identity of a specific session;

Selected positioning signal information.

In some embodiments, the terminal receives location service related information sent by the core network device, wherein the location service related information includes an identifier of a specific positioning-related session.

In some embodiments, the terminal receives the positioning signal configuration information sent by the first access network device, including:

A second RRC message sent by the first access network device is received, wherein the second RRC message includes positioning signal configuration information and the second RRC message is generated by the first access network device.

In some embodiments, the terminal sends second indication information to the first access network device, wherein the second indication information is used by the first access network device to determine positioning signal configuration information.

In some embodiments, the positioning signal configuration information includes at least one of the following:

Identification information of SRS configuration;

Spatial relationship information;

Power control information;

Path loss information;

TA timer information.

Among them, the optional implementation method of S501 can refer to the optional implementation method of Figures 2A to 2C, and other related parts in the embodiments involved, which will not be repeated here.

By implementing the embodiments of the present disclosure, the terminal can obtain positioning signal configuration information to achieve terminal positioning and avoid positioning failure.

FIG6 is a flow chart of a positioning method according to an embodiment of the present disclosure. As shown in FIG6, the embodiment of the present disclosure relates to a positioning method, which is performed by a second access network device and includes:

S601, receiving a first request message or a second request message sent by a first access network device, wherein the first request message includes positioning signal configuration information and/or information indicating a reason for the first request, the positioning signal configuration information is used for positioning a terminal in an inactive state, and the second request message is used to instruct to obtain context information of the terminal and/or to instruct to obtain positioning-related information, and the first access network device The first access network device does not have the context information of the terminal, and the second access network device has the context information of the terminal.

In some embodiments, the second access network device sends positioning signal configuration information to the core network device according to the first request message.

In some embodiments, the second access network device sends the positioning signal configuration information to the core network device, including: sending a third message to the core network device, wherein the third message is a terminal-related message, and the third message includes the positioning signal configuration information.

In some embodiments, the second access network device sends a first response message to the first access network device, wherein the first response message includes positioning signal configuration information, and the first response message includes a first RRC message.

In some embodiments, the second access network device sends a second response message to the first access network device based on the second request message.

In some embodiments, the second response message includes at least one of the following:

Identification of core network equipment;

An identifier of a first network element of a core network device;

An identifier of a second network element of a core network device;

The terminal's identification;

The identifier of the specific session to which the location is related.

In some embodiments, the positioning signal configuration information includes at least one of the following:

Identification information of SRS configuration;

Spatial relationship information;

Power control information;

Path loss information;

TA timer information.

Among them, the optional implementation method of S601 can refer to the optional implementation method of Figures 2A to 2C, and other related parts in the embodiments involved, which will not be repeated here.

By implementing the embodiments of the present disclosure, the second access network device can receive the positioning signal configuration information sent by the first access network device, or receive a request for obtaining the context information of the terminal and/or an instruction to obtain positioning-related information sent by the first access network device, so as to realize the positioning of the terminal and avoid positioning failure.

To facilitate understanding of the embodiments of the present disclosure, the following exemplary embodiments are provided.

In an exemplary embodiment, as shown in FIG7A , the first access network device is a serving gNB, the second access network device is an anchor gNB, and the core network device is an LMF in the core network device.

100, the serving gNB broadcasts the pre-configured SRS information.

The pre-configured SRS information may be the candidate positioning signal configuration information in some of the above embodiments.

101. The terminal indicates the selected SRS information to the serving gNB. In some embodiments, the selected SRS information is included in the RRC resume request message.

The SRS information selected by the terminal may be the positioning signal information selected by the terminal in some of the above embodiments.

Among them, the selected SRS information is included in the RRC resume request message, and the RRC resume request message can be the first indication information or the second indication information in some of the above embodiments.

102. The serving gNB sends an XnAP retrieve UE context request message to the anchor gNB, wherein the message includes at least one of the following information:

- Confirmed SRS information, used to indicate the SRS configuration determined by the serving gNB to be allocated to the terminal. Optionally, the confirmed SRS information includes at least one of the following: a pre-configuration identifier, spatial relationship information, power control information, pathloss information, and TA timer;

-SRS configuration indication, used to indicate that the context request is for SRS configuration.

The confirmed SRS information may be the positioning signal configuration information in some of the above embodiments.

Among them, the XnAP retrieve UE context request message can be the first request message in some of the above embodiments.

103. The anchor gNB decides whether to perform context relocation based on the information received from 102. If it is decided to perform without anchor relocation, the anchor gNB sends a UE-related NRPPa message (e.g., a positioning information update message) to the LMF, wherein the NRPPa message includes the confirmed SRS information received from 102 so that the LMF can perform further positioning operations.

Among them, the UE-related NRPPa message sent by the anchor gNB to the LMF may be the third message in some of the above embodiments.

104. If it is decided to perform without anchor relocation, the anchor gNB sends a Retrieve UE context failure message to the serving gNB, wherein the message includes an RRC release message, and the RRC release message includes the confirmed SRS information received from 102, so that the receiving gNB further sends it to the terminal (105) to perform further positioning operations.

The Retrieve UE context failure message may be the first response message in some of the above embodiments.

Among them, the receiving gNB sends the confirmed SRS information to the terminal, and can use the first RRC message in some of the above embodiments to send the confirmed SRS information to the terminal.

In another exemplary embodiment, as shown in FIG7B , the first access network device is a serving gNB, the second access network device is an anchor gNB, and the core network device is an LMF in the core network device.

201 to 202 are the same as 101 to 102, and will not be repeated here. (The difference is that there may be no confirmed SRS information in 202)

203. If the anchor gNB decides to perform anchor relocation, the anchor gNB sends a Retrieve UE context response message to the serving gNB, wherein the message includes positioning-related identification information, and the positioning-related identification information includes at least one of the following information:

-LMF routing ID, used to indicate the LMF identification;

-Transaction ID, used to indicate a specific positioning-related session identifier;

-AMF ID, used to indicate the AMF identifier of the service terminal;

-Terminal ID, used to indicate the identity of the terminal, for example, it can be NGAP UE ID and/or AMF UE ID.

Among them, the Retrieve UE context response message may be the second response message in some of the above embodiments.

204, the serving gNB sends a UE-related NRPPa message (e.g., a positioning information update message) to the LMF according to the positioning-related identification information received from 203, wherein the NRPPa message includes the confirmed SRS information so that the LMF performs further positioning operations. The confirmed SRS information is consistent with the description in 102 and is not repeated here.

Among them, the UE-related NRPPa message sent by the serving gNB to the LMF may be the first message in some of the above embodiments.

205. The serving gNB sends an RRC release message to the terminal, which includes confirmed SRS information so that the terminal can perform further positioning operations.

Among them, the RRC release message can be the second RRC message in some of the above embodiments.

In another exemplary embodiment, as shown in FIG7C , the first access network device is a serving gNB, the second access network device is an anchor gNB, and the core network device is the LMF in the core network device.

300, LMF sends a long term evolution (LTE) positioning protocol (LTE positioning protocol, LPP) message or a location service (LCS) message to the terminal for positioning related configuration, wherein the message includes first identification information for identifying the terminal or a specific positioning task or positioning session for the terminal. In some embodiments, the first identification information is LPP transaction ID, but is not limited thereto.

301. The terminal indicates selected SRS information to the serving gNB. In some embodiments, the selected SRS information is included in an RRC resume request message. Optionally, the message also includes positioning-related identification information, which includes at least one of the following information:

-AMF ID;

-LMF ID, such as routing ID

-First identification information.

Among them, the terminal indicates the selected SRS information to the serving gNB, and the selected SRS information is included in the RRC resume request message. The RRC resume request message may be the first indication information in some of the above embodiments.

302, the serving gNB sends a non-UE-related NRPPa message to the LMF indicated by the LMF ID through the AMF indicated by the AMF ID according to the identification information received from 301, wherein the NRPPa message includes confirmed SRS information and/or first identification information.

Among them, the non-UE-related NRPPa message sent by the serving gNB to the LMF may be the second message in some of the above embodiments.

The specific contents of the confirmed SRS information and the first identification information are consistent with those in the above steps and will not be repeated here.

303. The serving gNB sends an RRC release message to the terminal, which includes confirmed SRS information so that the terminal can perform further positioning operations.

Among them, the RRC release message can be the second RRC message in some of the above embodiments.

The embodiments of the present disclosure also propose a device for implementing any of the above methods, for example, a device is proposed, the above device includes a unit or module for implementing each step performed by the terminal in any of the above methods. For another example, another device is also proposed, including a unit or module for implementing each step performed by a network device (such as a first access network device, a second access network device, a core network device, etc.) in any of the above methods.

It should be understood that the division of the units or modules in the above device is only a division of logical functions. In actual implementation, they can be fully or partially integrated into one physical entity, or they can be physically separated. In addition, the units or modules in the device can be implemented in the form of a processor calling software: for example, the device includes a processor, the processor is connected to a memory, the memory stores instructions, and the processor calls the memory. The instructions stored in the device are used to implement any of the above methods or to implement the functions of each unit or module of the above device, wherein the processor is, for example, a general-purpose processor, such as a central processing unit (CPU) or a microprocessor, and the memory is a memory in the device or a memory outside the device. Alternatively, the unit or module in the device can be implemented in the form of a hardware circuit, and the functions of some or all of the units or modules can be implemented by designing the hardware circuit. The above hardware circuit can be understood as one or more processors; for example, in one implementation, the above hardware circuit is an application-specific integrated circuit (ASIC), and the functions of some or all of the above units or modules are implemented by designing the logical relationship of the components in the circuit; for another example, in another implementation, the above hardware circuit can be implemented by a programmable logic device (PLD), taking a field programmable gate array (FPGA) as an example, which can include a large number of logic gate circuits, and the connection relationship between the logic gate circuits is configured through a configuration file, so as to implement the functions of some or all of the above units or modules. All units or modules of the above devices may be implemented entirely in the form of a processor calling software, or entirely in the form of a hardware circuit, or partially in the form of a processor calling software and the rest in the form of a hardware circuit.

In the disclosed embodiments, the processor is a circuit with signal processing capability. In one implementation, the processor may be a circuit with instruction reading and running capability, such as a central processing unit (CPU), a microprocessor, a graphics processing unit (GPU) (which may be understood as a microprocessor), or a digital signal processor (DSP); in another implementation, the processor may implement certain functions through the logical relationship of a hardware circuit, and the logical relationship of the above hardware circuit may be fixed or reconfigurable, such as a hardware circuit implemented by an application-specific integrated circuit (ASIC) or a programmable logic device (PLD), such as an FPGA. In a reconfigurable hardware circuit, the process of the processor loading a configuration document to implement the hardware circuit configuration may be understood as the process of the processor loading instructions to implement the functions of some or all of the above units or modules. In addition, it can also be a hardware circuit designed for artificial intelligence, which can be understood as ASIC, such as Neural Network Processing Unit (NPU), Tensor Processing Unit (TPU), Deep Learning Processing Unit (DPU), etc.

Fig. 8A is a schematic diagram of the structure of a first access network device according to an embodiment of the present disclosure. As shown in Fig. 8A, the first access network device 10 may include: at least one of a transceiver module 11, a processing module 12, and the like.

In some embodiments, the processing module 12 is used to determine positioning signal configuration information, wherein the positioning signal configuration information is used for positioning a terminal in an inactive state. The transceiver module 11 is used to send positioning signal configuration information to a core network device and/or a terminal, wherein the first access network device does not have context information of the terminal.

The transceiver module 11 is used to execute at least one of the communication steps such as sending and/or receiving executed by the first access network device 10 in any of the above methods (for example, S201A to S206A, S201B to S207B, S201C to S204C, but not limited thereto), which will not be described in detail here. Optionally, the processing module 12 is used to execute at least one of the other steps (for example, S201A to S206A, S201B to S207B, S201C to S204C, but not limited thereto) executed by the first access network device 10 in any of the above methods, which will not be described in detail here.

In some embodiments, the transceiver module may include a sending module and/or a receiving module, and the sending module and the receiving module may be separate or integrated. Optionally, the transceiver module may be interchangeable with the transceiver.

In some embodiments, the processing module can be a module or include multiple submodules. Optionally, the multiple submodules respectively execute all or part of the steps required to be executed by the processing module. Optionally, the processing module can be replaced with the processor.

Fig. 8B is a schematic diagram of the structure of a core network device according to an embodiment of the present disclosure. As shown in Fig. 8B, the core network device 20 may include: at least one of a transceiver module 21 and a processing module.

In some embodiments, the above-mentioned transceiver module 21 is used to receive positioning signal configuration information sent by the first access network device or the second access network device, wherein the positioning signal configuration information is used for positioning a terminal in an inactive state, the first access network device does not have the context information of the terminal, and the second access network device has the context information of the terminal.

The above-mentioned transceiver module 21 is used to execute at least one of the communication steps such as sending and/or receiving performed by the core network device 20 in any of the above methods (for example, S201A~S206A, S201B~S207B, S201C~S204C, but not limited to these), which will not be repeated here.

In some embodiments, the transceiver module may include a sending module and/or a receiving module, and the sending module and the receiving module may be separate or integrated. Optionally, the transceiver module may be interchangeable with the transceiver.

Fig. 8C is a schematic diagram of the structure of a terminal proposed in an embodiment of the present disclosure. As shown in Fig. 8C, the terminal 30 may include: at least one of a transceiver module 31 and a processing module.

In some embodiments, the transceiver module 31 is used to receive positioning signal configuration information sent by the first access network device, wherein the positioning signal configuration information is used for positioning a terminal in an inactive state, and the first access network device does not have context information of the terminal.

The transceiver module 31 is used to execute at least one of the communication steps such as sending and/or receiving executed by the terminal 30 in any of the above methods (such as S201A~S206A, S201B~S207B, S201C~S204C, but not limited to these), which will not be repeated here.

In some embodiments, the transceiver module may include a sending module and/or a receiving module, and the sending module and the receiving module may be separate. Alternatively, the transceiver module may be replaced with the transceiver.

Fig. 8D is a schematic diagram of the structure of the second access network device proposed in the embodiment of the present disclosure. As shown in Fig. 8D, the second access network device 40 may include: at least one of a transceiver module 41 and a processing module.

In some embodiments, the above-mentioned transceiver module 41 is used to receive a first request message or a second request message sent by a first access network device, wherein the first request message includes positioning signal configuration information and/or information indicating the reason for the first request, the positioning signal configuration information is used for positioning a terminal in an inactive state, and the second request message is used to indicate the acquisition of context information of the terminal and/or indicate the acquisition of positioning-related information, the first access network device does not have the context information of the terminal, and the second access network device has the context information of the terminal.

The above-mentioned transceiver module 41 is used to execute at least one of the communication steps such as sending and/or receiving performed by the second access network device 40 in any of the above methods (for example, S201A~S206A, S201B~S207B, S201C~S204C, but not limited to these), which will not be repeated here.

In some embodiments, the transceiver module may include a sending module and/or a receiving module, and the sending module and the receiving module may be separate or integrated. Optionally, the transceiver module may be interchangeable with the transceiver.

9A is a schematic diagram of the structure of a communication device 8100 proposed in an embodiment of the present disclosure. The communication device 8100 may be a network device (e.g., a first access network device, a second access network device, a core network device, etc.), or a terminal (e.g., a user device, etc.), or a chip, a chip system, or a processor that supports a network device to implement any of the above methods, or a chip, a chip system, or a processor that supports a terminal to implement any of the above methods. The communication device 8100 may be used to implement the method described in the above method embodiment, and the details may refer to the description in the above method embodiment.

As shown in FIG9A , the communication device 8100 includes one or more processors 8101. The processor 8101 may be a general-purpose processor or a dedicated processor, for example, a baseband processor or a central processing unit. The baseband processor may be used to process the communication protocol and the communication data, and the central processing unit may be used to control the communication device (such as a base station, a baseband chip, a terminal device, a terminal device chip, a DU or a CU, etc.), execute a program, and process the data of the program. The communication device 8100 is used to execute any of the above methods.

In some embodiments, the communication device 8100 further includes one or more memories 8102 for storing instructions. Optionally, all or part of the memory 8102 may also be outside the communication device 8100.

In some embodiments, the communication device 8100 further includes one or more transceivers 8103. When the communication device 8100 includes one or more transceivers 8103, the transceiver 8103 performs at least one of the communication steps such as sending and/or receiving in the above method (for example, S201A to S206A, S201B to S207B, S201C to S204C, but not limited thereto), and the processor 8101 performs at least one of the other steps (for example, S201A to S206A, S201B to S207B, S201C to S204C, but not limited thereto).

In some embodiments, the transceiver may include a receiver and/or a transmitter, and the receiver and the transmitter may be separate or integrated. Optionally, the terms such as transceiver, transceiver unit, transceiver, transceiver circuit, etc. may be replaced with each other, the terms such as transmitter, transmission unit, transmitter, transmission circuit, etc. may be replaced with each other, and the terms such as receiver, receiving unit, receiver, receiving circuit, etc. may be replaced with each other.

In some embodiments, the communication device 8100 may include one or more interface circuits 8104. Optionally, the interface circuit 8104 is connected to the memory 8102, and the interface circuit 8104 may be used to receive signals from the memory 8102 or other devices, and may be used to send signals to the memory 8102 or other devices. For example, the interface circuit 8104 may read instructions stored in the memory 8102 and send the instructions to the processor 8101.

The communication device 8100 described in the above embodiments may be a network device or a terminal, but the scope of the communication device 8100 described in the present disclosure is not limited thereto, and the structure of the communication device 8100 may not be limited by FIG. 9A. The communication device may be an independent device or may be part of a larger device. For example, the communication device may be: 1) an independent integrated circuit IC, or a chip, or a chip system or subsystem; (2) a collection of one or more ICs, optionally, the above IC collection may also include a storage component for storing data and programs; (3) an ASIC, such as a modem; (4) a module that can be embedded in other devices; (5) a receiver, a terminal device, an intelligent terminal device, a cellular phone, a wireless device, a handheld device, a mobile unit, a vehicle-mounted device, a network device, a cloud device, an artificial intelligence device, etc.; (6) others, etc.

9B is a schematic diagram of the structure of the chip 8200 proposed in the embodiment of the present disclosure. In the case where the communication device 8100 may be a chip or a chip system, reference may be made to the schematic diagram of the structure of the chip 8200 shown in FIG. 9B , but the present invention is not limited thereto.

The chip 8200 includes one or more processors 8201, and the chip 8200 is used to execute any of the above methods.

In some embodiments, the chip 8200 further includes one or more interface circuits 8202. Optionally, the interface circuit 8202 is connected to the memory 8203. The interface circuit 8202 can be used to receive signals from the memory 8203 or other devices, and the interface circuit 8202 can be used to send signals to the memory 8203 or other devices. For example, the interface circuit 8202 can read instructions stored in the memory 8203 and send the instructions to the processor 8201.

In some embodiments, the interface circuit 8202 performs the communication steps such as sending and/or receiving in the above method (for example, S201A~S206A, S201B~S207B, S201C~S204C, but not limited to these), the processor 8201 executes at least one of the other steps (for example, S201A~S206A, S201B~S207B, S201C~S204C, but not limited to these).

In some embodiments, terms such as interface circuit, interface, transceiver pin, and transceiver may be used interchangeably.

In some embodiments, the chip 8200 further includes one or more memories 8203 for storing instructions. Optionally, all or part of the memory 8203 may be outside the chip 8200.

The present disclosure also proposes a storage medium, on which instructions are stored, and when the instructions are executed on the communication device 8100, the communication device 8100 executes any of the above methods. Optionally, the storage medium is an electronic storage medium. Optionally, the storage medium is a computer-readable storage medium, but is not limited to this, and it can also be a storage medium readable by other devices. Optionally, the storage medium can be a non-transitory storage medium, but is not limited to this, and it can also be a temporary storage medium.

The present disclosure also proposes a program product, which, when executed by the communication device 8100, enables the communication device 8100 to execute any of the above methods. Optionally, the program product is a computer program product.

The present disclosure also proposes a computer program, which, when executed on a computer, causes the computer to execute any one of the above methods.

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 disclosure.

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.

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

Claims (45)

A positioning method, characterized in that the method is performed by a first access network device, comprising: Determine positioning signal configuration information, wherein the positioning signal configuration information is used for positioning a terminal in an inactive state; The positioning signal configuration information is sent to a core network device and/or the terminal, wherein the first access network device does not have context information of the terminal. The method according to claim 1, characterized in that the method further comprises: A first request message is sent to a second access network device, wherein the first request message includes the positioning signal configuration information and/or reason information indicating the first request, and the second access network device has context information of the terminal. The method according to claim 2, wherein the sending the positioning signal configuration information to the core network device comprises: The positioning signal configuration information is sent to the core network device through the second access network device. The method according to claim 2 or 3, characterized in that the method further comprises: Receive a first response message sent by the second access network device, wherein the first response message includes the positioning signal configuration information. The method according to claim 4, characterized in that the sending the positioning signal configuration information to the terminal comprises: A first radio resource control RRC message is sent to the terminal, wherein the first RRC message includes the positioning signal configuration information, and the first RRC message is generated by the second access network device and sent to the first access network device. The method according to claim 1, characterized in that the method further comprises: Sending a second request message to the second access network device, wherein the second request message is used to instruct to obtain context information of the terminal and/or to instruct to obtain positioning-related information; Receiving a second response message sent by the second access network device; Determine the core network device/or the terminal according to the second response message. The method according to claim 6, wherein the second response message includes at least one of the following: The identification of the core network device; An identifier of a first network element of the core network device; An identifier of a second network element of the core network device; an identification of the terminal; The identifier of the specific session to which the location is related. The method according to claim 6 or 7, characterized in that the sending the positioning signal configuration information to the core network device comprises: A first message is sent to the core network device, wherein the first message is a message related to the terminal, and the first message includes the positioning signal configuration information. The method according to claim 1, characterized in that the method further comprises: Receiving first indication information sent by the terminal; Determine at least one of the positioning signal configuration information, the core network device, and the terminal according to the first indication information. The method according to claim 9, wherein the first indication information includes at least one of the following: The identification of the core network device; An identifier of a first network element of the core network device; An identifier of a second network element of the core network device; an identification of the terminal; Locating the identity of a specific session of interest; Selected positioning signal information. The method according to claim 9 or 10, characterized in that the sending the positioning signal configuration information to the core network device comprises: A second message is sent to the core network device, wherein the second message is a non-terminal related message, and the second message includes the positioning signal configuration information. The method according to any one of claims 6 to 11, characterized in that the sending the positioning signal configuration information to the terminal comprises: Send a second RRC message to the terminal, wherein the second RRC message includes the positioning signal configuration information, and the second RRC message is generated by the first access network device. The method according to any one of claims 1 to 12, characterized in that the method further comprises: receiving second indication information sent by the terminal; The positioning signal configuration information is determined according to the second indication information. The method according to any one of claims 1 to 13, characterized in that the positioning signal configuration information includes at least one of the following: The identification information of the sounding reference signal SRS configuration; Spatial relationship information; Power control information; Path loss information; Time calibration timer TA timer information. A positioning method, characterized in that the method is performed by a core network device, comprising: Receive positioning signal configuration information sent by a first access network device or a second access network device, wherein the positioning signal configuration information is used for positioning a terminal in an inactive state, the first access network device does not have context information of the terminal, and the second access network device has context information of the terminal. The method according to claim 15, wherein the receiving the positioning signal configuration information sent by the second access network device comprises: Receive a third message sent by the second access network device, wherein the third message is a terminal-related message, and the third message includes the positioning signal configuration information, wherein the positioning signal configuration information is determined by the first access network device and sent to the second access network device. The method according to claim 15, wherein the receiving the positioning signal configuration information sent by the first access network device comprises: Receive a first message sent by the first access network device, wherein the first message is a message related to the terminal and includes the positioning signal configuration information. The method according to claim 15, wherein the receiving the positioning signal configuration information sent by the first access network device comprises: Receive a second message sent by the first access network device, wherein the second message is a non-terminal related message and includes the positioning signal configuration information. The method according to claim 15 or 18, characterized in that the method further comprises: Sending location service related information to the terminal, wherein the location service related information includes an identifier of a specific positioning-related session. The method according to any one of claims 15 to 19, wherein the positioning signal configuration information includes at least one of the following: Identification information of SRS configuration; Spatial relationship information; Power control information; Path loss information; TA timer information. A positioning method, characterized in that the method is executed by a terminal, comprising: Receive positioning signal configuration information sent by a first access network device, wherein the positioning signal configuration information is used for positioning a terminal in an inactive state, and the first access network device does not have context information of the terminal. The method according to claim 21, wherein receiving the positioning signal configuration information sent by the first access network device comprises: Receive a first RRC message sent by the first access network device, wherein the first RRC message includes the positioning signal configuration information, the first RRC message is generated by a second access network device and sent to the first access network device, and the second access network device has the context information of the terminal. The method according to claim 21, characterized in that the method further comprises: Send first indication information to the first access network device, wherein the first indication information is used by the first access network device to determine at least one of the positioning signal configuration information, the core network device, and the terminal. The method according to claim 23, wherein the first indication information includes at least one of the following: The identification of the core network device; An identifier of a first network element of the core network device; An identifier of a second network element of the core network device; an identification of the terminal; Locating the identity of a specific session; Selected positioning signal information. The method according to claim 24, characterized in that the method further comprises: Receive location service related information sent by the core network device, wherein the location service related information includes an identifier of a specific positioning-related session. The method according to any one of claims 21, 23 to 25, wherein the receiving the positioning signal configuration information sent by the first access network device comprises: Receive a second RRC message sent by the first access network device, wherein the second RRC message includes the positioning signal configuration information, and the second RRC message is generated by the first access network device. The method according to any one of claims 21 to 26, characterized in that the method further comprises: Sending second indication information to the first access network device, wherein the second indication information is used by the first access network device to determine the positioning signal configuration information. The method according to any one of claims 21 to 27, wherein the positioning signal configuration information includes at least one of the following: Identification information of SRS configuration; Spatial relationship information; Power control information; Path loss information; TA timer information. A positioning method, characterized in that the method is performed by a second access network device, comprising: Receive a first request message or a second request message sent by a first access network device, wherein the first request message includes positioning signal configuration information and/or information used to indicate a reason for the first request, the positioning signal configuration information is used for positioning a terminal in an inactive state, the second request message is used to indicate obtaining context information of the terminal and/or indicating obtaining positioning-related information, the first access network device does not have the context information of the terminal, and the second access network device has the context information of the terminal. The method according to claim 29, characterized in that the method further comprises: According to the first request message, the positioning signal configuration information is sent to the core network device. The method according to claim 30, wherein the sending the positioning signal configuration information to the core network device comprises: A third message is sent to the core network device, wherein the third message is a terminal-related message and includes the positioning signal configuration information. The method according to claim 30 or 31, characterized in that the method further comprises: A first response message is sent to the first access network device, wherein the first response message includes the positioning signal configuration information, and the first response message includes a first RRC message. The method according to claim 29, characterized in that the method further comprises: According to the second request message, a second response message is sent to the first access network device. The method of claim 33, wherein the second response message includes at least one of the following: Identification of core network equipment; An identifier of a first network element of a core network device; An identifier of a second network element of a core network device; The terminal's identification; The identifier of the specific session to which the location is related. The method according to any one of claims 29 to 34, wherein the positioning signal configuration information includes at least one of the following: Identification information of SRS configuration; Spatial relationship information; Power control information; Path loss information; TA timer information. A positioning method, characterized by comprising: The first access network device determines positioning signal configuration information, wherein the positioning signal configuration information is used for positioning a terminal in an inactive state; The first access network device sends the positioning signal configuration information to the core network device and/or the terminal, wherein the first access network device does not have the context information of the terminal; The core network device receives the positioning signal configuration information sent by the first access network device or the first access network device through the second access network device, wherein the second access network device has the context information of the terminal; The terminal receives the positioning signal configuration information sent by the first access network device. A first access network device, characterized by comprising: A processing module, configured to determine positioning signal configuration information, wherein the positioning signal configuration information is used for positioning a terminal in an inactive state; A transceiver module is used to send the positioning signal configuration information to the core network device and/or the terminal, wherein the first access network device does not have the context information of the terminal. A core network device, characterized by comprising: A transceiver module is used to receive positioning signal configuration information sent by a first access network device or a second access network device, wherein the positioning signal configuration information is used to locate a terminal in an inactive state, the first access network device does not have context information of the terminal, and the second access network device has context information of the terminal. A terminal, characterized by comprising: The transceiver module is used to receive positioning signal configuration information sent by a first access network device, wherein the positioning signal configuration information is used for positioning a terminal in an inactive state, and the first access network device does not have context information of the terminal. A second access network device, characterized by comprising: A transceiver module is used to receive a first request message or a second request message sent by a first access network device, wherein the first request message includes positioning signal configuration information and/or information indicating a reason for the first request, the positioning signal configuration information is used for positioning a terminal in an inactive state, and the second request message is used to indicate acquisition of context information of the terminal and/or acquisition of positioning-related information, the first access network device does not have the context information of the terminal, and the second access network device has the context information of the terminal. An access network device, characterized by comprising: one or more processors; The access network device is used to execute the method described in any one of claims 1 to 14 or 29 to 35. A core network device, characterized by comprising: one or more processors; The core network device is used to execute the method described in any one of claims 15 to 20. A terminal, characterized by comprising: one or more processors; The terminal is used to execute the method described in any one of claims 21 to 28. A communication system, characterized in that it includes an access network device, a core network device, and a terminal, wherein the access network device is configured to implement the method described in any one of claims 1 to 14 or 29 to 35, the core network device is configured to implement the method described in any one of claims 15 to 20, and the terminal is configured to implement the method described in any one of claims 21 to 28. A storage medium storing instructions, characterized in that when the instructions are executed on a communication device, the communication device executes a method as described in any one of claims 1 to 14 or 15 to 20 or 21 to 28 or 29 to 35.