Resource setting method and communication device

Abstract

Embodiments of the present application provide a resource setting method and a communication device. According to the method provided in the present application, a network device receives first reference SRS resource information from a location management device, and based on the first reference SRS resource information, sets a second SRS resource for a terminal device to be positioned, and the network device sets a second SRS resource having at least one overlapping time domain unit with the first SRS resource related to the first reference SRS resource information for the terminal device to be positioned. Further, by measuring the SRS signal transmitted by the reference terminal device on the first SRS resource and the SRS signal transmitted by the terminal device to be positioned, when the terminal device to be positioned is positioned, the phase shift present in the phase measured by the network device on the first SRS resource in the time domain and the phase shift present in the phase measured by the network device on the second SRS resource in the time domain are the same or similar. This helps to remove or reduce the error introduced by the phase shift and improve the positioning accuracy.

Description

Technical Field

[0001] This application claims priority to Chinese Patent Application No. 202210588546.8, titled "RESOURCE CONFIGURATION METHOD AND COMMUNICATION APPARATUS", filed with the China National Intellectual Property Administration on May 27, 2022, the entire content of which is incorporated herein by reference.

[0002] Embodiments of this application relate to the field of communications, and in particular, to resource configuration methods and communication apparatuses.

Background Art

[0003] Positioning is an important function in a mobile communication system, and the system is required to provide the user's location information in real time. The 5th generation (5G) communication system has high-precision positioning requirements for positioning, requiring that the positioning error outdoors is less than 10 m and the positioning error indoors is less than 1 m.

[0004] Existing positioning technologies mainly include uplink positioning, downlink positioning, and uplink and downlink positioning. In uplink positioning, the base station measures the sounding reference signal (SRS) transmitted by the user equipment (UE). In downlink positioning, the terminal device measures the positioning reference signal (PRS) transmitted by the base station. In uplink and downlink positioning, the UE is required to measure the PRS transmitted by the base station, and the base station is required to measure the SRS transmitted by the UE.

[0005] In actual positioning, due to different phase shifts existing in the phase measured by the base station in the time domain, positioning errors occur and the positioning requirements of 5G cannot be met.

Summary of the Invention

[0006] Embodiments of the present application provide a resource setting method and a communication device. According to the method provided in the present application, a network device may set a second sounding reference signal (SRS) resource for a terminal device to be positioned. Thereby, when the terminal device to be positioned is positioned based on the SRS signal transmitted by the terminal device to be positioned on the second SRS resource, the positioning accuracy is improved.

[0007] According to a first aspect, a resource setting method is provided. The method may be executed by a network device or by a component (for example, a chip or a circuit) of the network device. This is not limited. For ease of explanation, hereinafter, an example in which the method is executed by a network device is used for explanation.

[0008] The method includes the network device receiving first reference SRS resource information from a location management device. The network device sets a second SRS resource for the terminal device to be positioned based on the first reference SRS resource information.

[0009] Based on the above technical solution, the network device sets a second SRS resource for the terminal device to be positioned based on the first reference SRS resource information from the location management device. This helps the network device to set for the terminal device to be positioned a second SRS resource having at least one time domain unit overlapping with the first SRS resource related to the first reference SRS resource information. Further, by measuring the SRS signal transmitted by the reference terminal device on the first SRS resource and the SRS signal transmitted by the terminal device to be positioned on the second SRS resource, when the terminal device to be positioned is positioned, the phase shift present in the phase measured by the network device on the first SRS resource in the time domain and the phase shift present in the phase measured by the network device on the second SRS resource in the time domain are the same or similar. This helps to remove or reduce the error introduced by the phase shift and improve the positioning accuracy.

[0010] For example, the first SRS resource related to the first reference SRS resource information is used for the first reference terminal device to transmit the first SRS signal, and the second SRS resource is used for the terminal device to be positioned to transmit the second SRS signal. The first SRS signal and the second SRS signal are for positioning the terminal device to be positioned.

[0011] For example, the first reference SRS resource information includes one or more of the start symbol position, the number of occupied symbols, the transmission periodicity and offset, the transmission comb and offset, the cyclic shift, the frequency domain position and offset, or the frequency hopping setting.

[0012] For example, the first reference SRS resource information includes at least the start symbol position, the number of occupied symbols, the transmission periodicity, and the offset.

[0013] Based on the above technical solution, the time-domain position of the first SRS resource is determined based on the first reference SRS resource information, and it helps the network device to configure for the terminal device to be positioned a second SRS resource having at least one time-domain unit overlapping with the first SRS resource.

[0014] For example, the first reference SRS resource information includes the identification information of the first SRS resource.

[0015] Based on the above technical solution, the first SRS resource is determined based on the first reference SRS resource information, and it helps the network device to configure for the terminal device to be positioned a second SRS resource having at least one time-domain unit overlapping with the first SRS resource.

[0016] For example, there is at least one time-domain unit overlapping between the second SRS resource and the first SRS resource, and the first reference SRS resource information is related to the first SRS resource.

[0017] The existence of at least one overlapping time domain unit between the second SRS resource and the first SRS resource includes the following multiple cases, that is, there is no offset in terms of the time domain unit between the second SRS resource and the first SRS resource, or there is an offset of one time domain unit between the second SRS resource and the first SRS resource. The absence of an offset in terms of the time domain unit between the second SRS resource and the first SRS resource means that the start symbol position of the first SRS resource is the same as the start symbol position of the second SRS resource, and / or the end symbol position of the first SRS resource is the same as the end symbol position of the second SRS resource. The offset in terms of the time domain unit existing between the second SRS resource and the first SRS resource is the offset between the start symbol position of the first SRS resource and the start symbol position of the second SRS resource, or the offset between the end symbol position of the first SRS resource and the end symbol position of the second SRS resource.

[0018] According to a second aspect, a resource setting method is provided. The method may be executed by a network device or may be executed by a component (such as a chip or a circuit) of the network device. This is not limited. For ease of explanation, hereinafter, an example in which the method is executed by a network device is used for explanation.

[0019] The method includes the network device receiving first reference SRS resource information from a location management device. The network device sets a second SRS resource for a terminal device to be positioned based on the first reference SRS resource information, and there is at least one overlapping time domain unit between the second SRS resource and the first SRS resource, and the first reference SRS resource information is related to the first SRS resource.

[0020] Based on the above technical solution, based on the first reference SRS resource information from the location management device, there is at least one overlapping time domain unit between the second SRS resource set for the terminal device to be positioned by the network device and the first SRS resource. Further, by measuring the SRS signal transmitted by the reference terminal device on the first SRS resource and the SRS signal transmitted by the terminal device to be positioned on the second SRS resource, when the terminal device to be positioned is positioned, the phase shift present in the phase measured by the network device on the first SRS resource in the time domain and the phase shift present in the phase measured by the network device on the second SRS resource in the time domain are the same or similar. This helps to remove or reduce the error introduced by the phase shift and improve the positioning accuracy.

[0021] For example, the first SRS resource related to the first reference SRS resource information is used by the first reference terminal device to perform the transmission of the first SRS signal, and the second SRS resource is used by the terminal device to be positioned to perform the transmission of the second SRS signal. The first SRS signal and the second SRS signal are for positioning the terminal device to be positioned.

[0022] The existence of at least one overlapping time domain unit between the second SRS resource and the first SRS resource includes the following multiple cases, that is, there is no offset in terms of time domain unit between the second SRS resource and the first SRS resource, or there is an offset of one time domain unit between the second SRS resource and the first SRS resource.

[0023] For example, the first reference SRS resource information includes one or more of start symbol position, occupied symbol number, transmission periodicity and offset, transmission comb and offset, cyclic shift, frequency domain position and offset, or frequency hopping setting.

[0024] For example, the first reference SRS resource information includes at least a start symbol position, a number of occupied symbols, a transmission periodicity, and an offset.

[0025] Based on the above technical solution, the time domain position of the first SRS resource is determined based on the first reference SRS resource information, which helps the network device to set, for the terminal device to be located, a second SRS resource having at least one time domain unit overlapping with the first SRS resource.

[0026] For example, the first reference SRS resource information includes identification information of the first SRS resource.

[0027] Based on the above technical solution, the first SRS resource is determined based on the first reference SRS resource information, which helps the network device to set, for the terminal device to be located, a second SRS resource having at least one time domain unit overlapping with the first SRS resource.

[0028] According to a third aspect, a resource setting method is provided. The method may be executed by a network device or by a component (e.g., a chip or a circuit) of the network device. This is not limited. For ease of explanation, hereinafter, an example in which the method is executed by a network device is used in this specification for explanation.

[0029] The method includes the network device receiving a first reference SRS resource from a location management device, where the first reference SRS resource information includes one or more of a start symbol position, a number of occupied symbols, a transmission periodicity and an offset, a transmission comb and an offset, a cyclic shift, a frequency domain position and an offset, or a frequency hopping setting. The network device sets a second SRS resource for the terminal device to be located based on the first reference SRS resource information.

[0030] Based on the above technical solution, the network device sets a second SRS resource for the terminal device to be positioned based on the first reference SRS resource information from the location management device. This helps the network device to set for the terminal device to be positioned a second SRS resource having at least one time domain unit overlapping with the first SRS resource related to the first reference SRS resource information. Further, by measuring the SRS signal transmitted by the reference terminal device on the first SRS resource and the SRS signal transmitted by the terminal device to be positioned on the second SRS resource, when the terminal device to be positioned is positioned, the phase shift present in the phase measured by the network device on the first SRS resource in the time domain and the phase shift present in the phase measured by the network device on the second SRS resource in the time domain are the same or similar. This helps to remove or reduce the error introduced by the phase shift and improve the positioning accuracy.

[0031] For example, the first SRS resource related to the first reference SRS resource information is used for the first reference terminal device to transmit the first SRS signal, and the second SRS resource is used for the terminal device to be positioned to transmit the second SRS signal. The first SRS signal and the second SRS signal are for positioning the terminal device to be positioned.

[0032] For example, the first reference SRS resource information includes at least the start symbol position, the number of occupied symbols, the transmission periodicity, and the offset.

[0033] Based on the above technical solution, the time domain position of the first SRS resource is determined based on the first reference SRS resource information, which helps the network device to set for the terminal device to be positioned a second SRS resource having at least one time domain unit overlapping with the first SRS resource.

[0034] For example, there is at least one overlapping time domain unit between the second SRS resource and the first SRS resource, and the first reference SRS resource information is related to the first SRS resource.

[0035] The existence of at least one overlapping time domain unit between the second SRS resource and the first SRS resource includes the following multiple cases, that is, there is no offset of a time domain unit between the second SRS resource and the first SRS resource, or there is an offset of one time domain unit between the second SRS resource and the first SRS resource.

[0036] Regarding the first aspect to the third aspect, in some implementations of the first aspect to the third aspect, the first reference SRS resource information is related to the SRS resources of at least one reference terminal device.

[0037] Based on the above technical solution, when the first reference SRS resource information is related to the SRS resources of at least one reference terminal device, it helps the network device to set, for the terminal device to be positioned, a second SRS resource having the SRS resources of at least one reference terminal device and at least one overlapping time domain unit. Further, by measuring the SRS signal transmitted by at least one reference terminal device and the SRS signal transmitted by the terminal device to be positioned on the second SRS resource, when the terminal device to be positioned is positioned, the phase shift existing in the phase measured by the network device on the second SRS resource in the time domain and the phase shift existing in the phase measured by the network device on the SRS resource of at least one reference terminal device in the time domain are the same or similar. This helps to remove or reduce the error introduced by the phase shift and improve the positioning accuracy.

[0038] For example, the first reference SRS resource information is related to the SRS resources of the first reference terminal device, and the first reference SRS resource information is information about the SRS resources of the first reference terminal device, or the first reference SRS resource information is information obtained based on the SRS resources of the first reference terminal device.

[0039] For example, the first reference SRS resource information is related to the SRS resources of at least two reference terminal devices, and the first reference SRS resource information is information about the SRS resources of at least two reference terminal devices, or the first SRS resource information is information obtained based on the SRS resources of at least two reference terminal devices.

[0040] Regarding the first aspect to the third aspect, in some implementations of the first aspect to the third aspect, the network device receiving the first reference SRS resource information from the location management device includes the network device receiving a plurality of reference SRS resource information and the priority information of each of the plurality of reference SRS resource information from the location management device, and the plurality of SRS resource information includes the first reference SRS resource information. The method further includes the network device sending information about the second SRS resource to the location management device.

[0041] Regarding the first to third aspects, in some implementations of the first to third aspects, the method further includes a network device receiving first indication information from a location management device, where the first indication information indicates setting, for a terminal device to be positioned, a second SRS resource that completely overlaps with a first SRS resource in the time domain or setting, for the terminal device to be positioned, a second SRS resource that partially overlaps with the first SRS resource in the time domain, and the first reference SRS resource information is related to the first SRS resource. The network device setting the second SRS resource for the terminal device to be positioned based on the first reference SRS resource information includes the network device setting the second SRS resource for the terminal device to be positioned based on the first reference SRS resource information and the first indication information.

[0042] Based on the above technical solution, the network device may set the second SRS resource for the terminal device to be positioned based on the first indication information. Therefore, by measuring the SRS signal transmitted by the reference terminal device on the first SRS resource and the SRS signal transmitted by the terminal device to be positioned on the second SRS resource, when the terminal device to be positioned is positioned, the phase shift present in the phase measured by the network device on the first SRS resource in the time domain and the phase shift present in the phase measured by the network device on the second SRS resource in the time domain are the same or similar. This helps to remove or reduce the error introduced by the phase shift and improve the positioning accuracy.

[0043] Regarding the first to third aspects, in some implementations of the first to third aspects, the method further includes a network device receiving second indication information from a location management device, where the second indication information indicates an offset between a first SRS resource and a second SRS resource, and the first reference SRS resource information is related to the first SRS resource. The network device setting the second SRS resource for the terminal device to be positioned based on the first reference SRS resource information includes the network device setting the second SRS resource for the terminal device to be positioned based on the first reference SRS resource information and the second indication information.

[0044] Based on the above technical solution, the network device may set the second SRS resource for the terminal device to be positioned based on the second indication information. Therefore, by measuring the SRS signal transmitted by the reference terminal device on the first SRS resource and the SRS signal transmitted by the terminal device to be positioned on the second SRS resource, when the terminal device to be positioned is positioned, the phase shift present in the phase measured by the network device on the first SRS resource in the time domain and the phase shift present in the phase measured by the network device on the second SRS resource in the time domain are the same or similar. This helps to remove or reduce the error introduced by the phase shift and improve the positioning accuracy.

[0045] Regarding the first to third aspects, in some implementations of the first to third aspects, the method further includes a network device receiving third indication information from a location management device, where the third indication information indicates that the first SRS resource is a reference resource, and the first reference SRS resource information is related to the first SRS resource.

[0046] Based on the above technical solution, the network device may use the first SRS resource as a reference resource based on the third indication information, and based on the first SRS resource, set a second SRS resource for the terminal device to be positioned.

[0047] Regarding the first aspect to the third aspect, in some implementations of the first aspect to the third aspect, the network device receiving the first reference SRS resource information from the location management device includes the network device receiving reference resource information from the location management device, and the plurality of reference SRS resource information includes the first reference SRS resource information.

[0048] Based on the above technical solution, the network device may use the first SRS resource determined based on the first reference resource information as a reference resource, and based on the first SRS resource, set a second SRS resource for the terminal device to be positioned.

[0049] According to a fourth aspect, a resource setting method is provided. The method may be executed by a location management device or by a component (such as a chip or circuit) of the location management device. This is not limited. For the sake of easy explanation, hereinafter, an example in which the method is executed by a location management device is used in this specification for explanation.

[0050] The method includes the location management device sending the first reference SRS resource information to the network device, and the first reference SRS resource information is used for the network device to set a second SRS resource for the terminal device to be positioned. The location management device receives information about the second SRS resource from the network device.

[0051] For the beneficial effects of the method shown in the fourth aspect and possible implementations of the fourth aspect, refer to the beneficial effects in the first aspect and possible implementations of the first aspect.

[0052] For example, the first SRS resource related to the first reference SRS resource information is used by the first reference terminal device to transmit the first SRS signal, and the second SRS resource is used by the terminal device to be positioned to transmit the second SRS signal. The first SRS signal and the second SRS signal are for positioning the terminal device to be positioned.

[0053] For example, the first reference SRS resource information includes one or more of a start symbol position, a number of occupied symbols, a transmission periodicity and an offset, a transmission comb and an offset, a cyclic shift, a frequency domain position and an offset, or a frequency hopping setting.

[0054] For example, the first reference SRS resource information includes at least a start symbol position, a number of occupied symbols, a transmission periodicity, and an offset.

[0055] For example, the first reference SRS resource information includes identification information of the first SRS resource.

[0056] For example, there is at least one overlapping time domain unit between the second SRS resource and the first SRS resource, and the first reference SRS resource information is related to the first SRS resource.

[0057] The existence of at least one overlapping time domain unit between the second SRS resource and the first SRS resource includes the following multiple cases, that is, there is no offset for a time domain unit between the second SRS resource and the first SRS resource, or there is an offset for one time domain unit between the second SRS resource and the first SRS resource.

[0058] According to a fifth aspect, a resource setting method is provided. The method may be executed by a location management device or by a component (e.g., a chip or a circuit) of the location management device. This is not limiting. For the sake of ease of explanation, hereinafter, an example in which the method is executed by a location management device is used in this specification for the purpose of explanation.

[0059] The method includes the location management device transmitting first reference SRS resource information to a network device, where the first reference SRS resource information is used by the network device to configure a second SRS resource for a terminal device to be positioned. The location management device receives information about the second SRS resource from the network device, and there is at least one overlapping time domain unit between the second SRS resource and the first SRS resource, and the first reference SRS resource information is related to the first SRS resource.

[0060] For the beneficial effects of the method shown in the fifth aspect and possible implementations of the fifth aspect, refer to the beneficial effects in the second aspect and possible implementations of the second aspect.

[0061] For example, the first SRS resource related to the first reference SRS resource information is used by a first reference terminal device to transmit a first SRS signal, and the second SRS resource is used by a terminal device to be positioned to transmit a second SRS signal. The first SRS signal and the second SRS signal are for positioning the terminal device to be positioned.

[0062] The existence of at least one overlapping time domain unit between the second SRS resource and the first SRS resource includes the following multiple cases, that is, there is no offset in terms of a time domain unit between the second SRS resource and the first SRS resource, or there is an offset of one time domain unit between the second SRS resource and the first SRS resource.

[0063] For example, the first reference SRS resource information includes one or more of a start symbol position, a number of occupied symbols, a transmission periodicity and an offset, a transmission comb and an offset, a cyclic shift, a frequency domain position and an offset, or a frequency hopping setting.

[0064] For example, the first reference SRS resource information includes at least a start symbol position, a number of occupied symbols, a transmission periodicity, and an offset.

[0065] For example, the first reference SRS resource information includes identification information of the first SRS resource.

[0066] According to a fifth aspect, a resource setting method is provided. The method may be executed by a location management device or by a component (e.g., a chip or a circuit) of the location management device. This is not limiting. For ease of explanation, hereinafter, an example in which the method is executed by a location management device is used in this specification for the purpose of explanation.

[0067] The method includes the location management device transmitting a first reference SRS resource to a network device, where the first reference SRS resource information is used by the network device to configure a second SRS resource for a terminal device to be positioned, and the first reference SRS resource information includes one or more of a start symbol position, a number of occupied symbols, a transmission periodicity and an offset, a transmission comb and an offset, a cyclic shift, a frequency domain position and an offset, or a frequency hopping setting. The location management device receives information about the second SRS resource from the network device.

[0068] For the beneficial effects of the method shown in the sixth aspect and possible implementations of the sixth aspect, refer to the beneficial effects in the third aspect and possible implementations of the third aspect.

[0069] For example, the first SRS resource related to the first reference SRS resource information is used by the first reference terminal device to transmit the first SRS signal, and the second SRS resource is used by the terminal device to be positioned to transmit the second SRS signal. The first SRS signal and the second SRS signal are for positioning the terminal device to be positioned.

[0070] For example, the first reference SRS resource information includes at least a start symbol position, the number of occupied symbols, a transmission periodicity, and an offset.

[0071] For example, there is at least one overlapping time domain unit between the second SRS resource and the first SRS resource, and the first reference SRS resource information is related to the first SRS resource.

[0072] The existence of at least one overlapping time domain unit between the second SRS resource and the first SRS resource includes the following multiple cases, that is, there is no offset for a time domain unit between the second SRS resource and the first SRS resource, or there is an offset for one time domain unit between the second SRS resource and the first SRS resource.

[0073] Regarding the fourth to sixth aspects, in some implementations of the fourth to sixth aspects, the first reference SRS resource information is related to the SRS resources of at least one reference terminal device.

[0074] For example, the first reference SRS resource information is related to the SRS resource of the first reference terminal device, and the first reference SRS resource information is information about the SRS resource of the first reference terminal device, or the first reference SRS resource information is information obtained based on the SRS resource of the first reference terminal device.

[0075] For example, the first reference SRS resource information is related to the SRS resources of at least two reference terminal devices, and the first reference SRS resource information is information about the SRS resources of at least two reference terminal devices, or the first SRS resource information is information obtained based on the SRS resources of at least two reference terminal devices.

[0076] Regarding the fourth to sixth aspects, in some implementations of the fourth to sixth aspects, the position management device transmitting the first reference SRS resource information to the network device includes the position management device transmitting a plurality of reference SRS resource information and priority information for each of the plurality of reference SRS resource information to the network device, and the plurality of reference SRS resource information includes the first reference SRS resource information.

[0077] Regarding the fourth to sixth aspects, in some implementations of the fourth to sixth aspects, the method further includes the position management device transmitting first indication information to the network device, and the first indication information indicates setting, for the terminal device to be positioned, a second SRS resource that completely overlaps with the first SRS resource in the time domain, or setting, for the terminal device to be positioned, a second SRS resource that partially overlaps with the first SRS resource in the time domain, and the first reference SRS resource information is related to the first SRS resource.

[0078] Regarding the fourth to sixth aspects, in some implementations of the fourth to sixth aspects, the method further includes the position management device transmitting second indication information to the network device, and the second indication information indicates an offset between the first SRS resource and the second SRS resource, and the first reference SRS resource information is related to the first SRS resource.

[0079] Regarding the fourth to sixth aspects, in some implementations of the fourth to sixth aspects, the method further includes the location management device transmitting third indication information to the network device, where the third indication information indicates that the first SRS resource is a reference resource, and the first reference SRS resource information is related to the first SRS resource.

[0080] Regarding the fourth to sixth aspects, in some implementations of the fourth to sixth aspects, the location management device transmitting the first reference SRS resource information to the network device includes the location management device transmitting reference resource information to the network device, and the reference resource information includes the first reference SRS resource information.

[0081] According to a seventh aspect, a positioning method is provided. The method may be executed by a network device or by a component (e.g., a chip or a circuit) of the network device. This is not limiting. For ease of explanation, an example where the method is executed by a network device is used herein for the purpose of explanation.

[0082] The method includes the network device receiving a first SRS signal from a reference terminal device on a first SRS resource. The network device receives a second SRS signal from a terminal device to be positioned on a second SRS resource, and there is at least one overlapping time domain unit between the second SRS resource and the first SRS resource. The network device transmits positioning information to the location management device, where the positioning information is obtained by measuring the first SRS signal and the second SRS signal, and the positioning information is for positioning the terminal device to be positioned.

[0083] Based on the above technical solution, since there is at least one overlapping time domain unit between the first SRS resource and the second SRS resource, when the positioning target terminal device is positioned by measuring the first SRS signal and the second SRS signal, the phase shift existing in the phase measured by the network device on the first SRS resource in the time domain and the phase shift existing in the phase measured by the network device on the second SRS resource in the time domain are the same or similar. This helps to remove or reduce the error introduced by the phase shift and improve the positioning accuracy.

[0084] For example, the existence of at least one overlapping time domain unit between the second SRS resource and the first SRS resource includes the following two cases, namely, (1) there is no offset of one time domain unit between the second SRS resource and the first SRS resource, (2) there is an offset of one time domain unit between the second SRS resource and the first SRS resource. The offset is the offset between the start symbol position of the first SRS resource and the start symbol position of the second SRS resource, or the offset between the end symbol position of the first SRS resource and the end symbol position of the second SRS resource.

[0085] For example, the time domain unit is a symbol.

[0086] Regarding the seventh aspect, in some implementations of the seventh aspect, the network device is the serving network device of the positioning target terminal device, and the method further includes the network device receiving first reference SRS resource information from the location management device, and the first reference SRS resource information is related to the first SRS resource. The network device sets a second SRS resource for the positioning target terminal device based on the first reference SRS resource information.

[0087] Based on the above technical solution, after the serving network device of the positioning target terminal device receives the first reference SRS resource information, the network device can be helpful for setting, for the positioning target terminal device, a second SRS resource having at least one time domain unit overlapping with the first SRS resource based on the first reference SRS resource information.

[0088] For example, the first reference SRS resource information includes one or more of start symbol position, occupied symbol number, transmission periodicity and offset, transmission comb and offset, cyclic shift, frequency domain position and offset, or frequency hopping setting.

[0089] For example, the first reference SRS resource information includes at least start symbol position, occupied symbol number, transmission periodicity, and offset.

[0090] Based on the above technical solution, the time domain position of the first SRS resource is determined based on the first reference SRS resource information, which can be helpful for the network device to set, for the positioning target terminal device, a second SRS resource having at least one time domain unit overlapping with the first SRS resource.

[0091] For example, the first reference SRS resource information includes the identification information of the first SRS resource.

[0092] Based on the above technical solution, the first SRS resource is determined based on the first reference SRS resource information, which can be helpful for the network device to set, for the positioning target terminal device, a second SRS resource having at least one time domain unit overlapping with the first SRS resource.

[0093] Regarding the seventh aspect, in some implementations of the seventh aspect, for the network device to receive the first reference SRS resource information from the location management device includes the network device receiving a plurality of reference SRS resource information and priority information for each of the plurality of reference SRS resource information from the location management device, and the plurality of reference SRS resource information includes the first reference SRS resource information. The method further includes the network device sending information about the second SRS resource to the location management device.

[0094] For example, the information about the second SRS resource includes the resource configuration information of the second SRS resource and / or the identification information of the second SRS resource. For example, the resource configuration information of the second SRS includes one or more of the start symbol position, the number of occupied symbols, the transmission periodicity and offset, the transmission comb and offset, the cyclic shift, the frequency domain position and offset, or the frequency hopping setting. The identification information of the second SRS resource identifies the second SRS resource.

[0095] Regarding the seventh aspect, in some implementations of the seventh aspect, the method further includes the network device receiving first indication information from the location management device, and the first indication information indicates setting, for the terminal device to be positioned, a second SRS resource that completely overlaps with the first SRS resource in the time domain or setting, for the terminal device to be positioned, a second SRS resource that partially overlaps with the first SRS resource in the time domain.

[0096] Based on the above technical solution, the network device may set a second SRS resource for the terminal device to be positioned based on the first indication information. Therefore, by measuring the first SRS signal and the second SRS signal, when the terminal device to be positioned is positioned, the phase shift existing in the phase measured by the network device on the first SRS resource in the time domain and the phase shift existing in the phase measured by the network device on the second SRS resource in the time domain are the same or similar. This helps to remove or reduce the error introduced by the phase shift and improve the positioning accuracy.

[0097] Regarding the seventh aspect, in some implementations of the seventh aspect, the network device is the serving network device of the terminal device to be positioned and the reference terminal device, and the method further includes the network device receiving first indication information from the location management device, where the first indication information indicates setting a second SRS resource that completely overlaps with the first SRS resource in the time domain for the terminal device to be positioned, or setting a second SRS resource that partially overlaps with the first SRS resource in the time domain for the terminal device to be positioned. The network device sets a second SRS resource for the terminal device to be positioned and sets a first SRS resource for the reference terminal device based on the first indication information.

[0098] Based on the above technical solution, the network device may set a second SRS resource for the terminal device to be positioned and set a first SRS resource for the reference terminal device based on the first indication information. Therefore, by measuring the first SRS signal and the second SRS signal, when the terminal device to be positioned is positioned, the phase shift existing in the phase measured by the network device on the first SRS resource in the time domain and the phase shift existing in the phase measured by the network device on the second SRS resource in the time domain are the same or similar. This helps to remove or reduce the error introduced by the phase shift and improve the positioning accuracy.

[0099] Regarding the seventh aspect, in some implementations of the seventh aspect, the method further includes the network device receiving second indication information from the location management device, and the second indication information indicates an offset between the first SRS resource and the second SRS resource.

[0100] Regarding the seventh aspect, in some implementations of the seventh aspect, the network device is the serving network device of the terminal device to be positioned and the reference terminal device, and the method further includes the network device receiving second indication information from the location management device, and the second indication information indicates an offset between the first SRS resource and the second SRS resource. The network device sets a second SRS resource for the terminal device to be positioned and sets a first SRS resource for the reference terminal device based on the second indication information.

[0101] Based on the above technical solution, the network device may set a second SRS resource for the terminal device to be positioned and set a first SRS resource for the reference terminal device based on the second indication information. Therefore, by measuring the first SRS signal and the second SRS signal, when the terminal device to be positioned is positioned, the phase shift existing in the phase measured by the network device on the first SRS resource in the time domain and the phase shift existing in the phase measured by the network device on the second SRS resource in the time domain are the same or similar. This helps to remove or reduce the error introduced by the phase shift and improve the positioning accuracy.

[0102] Regarding the seventh aspect, in some implementations of the seventh aspect, the network device is the serving network device of the terminal device to be positioned, and the method further includes the network device sending information about the second SRS resource to the location management device.

[0103] Based on the above technical solution, after the location management device receives the information about the second SRS resource, it sends the information about the second SRS resource to the serving network device of the reference terminal device. Therefore, the serving network device of the reference terminal device may set the first SRS resource for the reference terminal device based on the information about the second SRS resource.

[0104] Regarding the seventh aspect, in some implementations of the seventh aspect, the network device is the serving network device of the terminal device to be positioned, and the method further includes the network device receiving the information about the second SRS resource from the location management device. The network device sets the first SRS resource for the reference terminal device based on the information about the second SRS resource.

[0105] Based on the above technical solution, after the serving network device of the reference terminal device receives information about the second SRS resource, the serving network device of the reference terminal device may configure the first SRS resource for the reference terminal device based on the information about the second SRS resource.

[0106] According to an eighth aspect, a positioning method is provided. The method may be executed by a location management device or by a component (such as a chip or a circuit) of the location management device. This is not limiting. For ease of explanation, hereinafter, an example in which the method is executed by a location management device is used herein for the purpose of explanation.

[0107] The method includes the location management device receiving positioning information from a network device, where the positioning information is obtained by measuring a first SRS signal and a second SRS signal. The first SRS signal is an SRS signal from a reference terminal device and is received by the network device on a first SRS resource. The second SRS signal is an SRS signal from the terminal device to be positioned and is received by the network device on a second SRS resource. There is at least one overlapping time domain unit between the second SRS resource and the first SRS resource. The location management device positions the terminal device to be positioned based on the positioning information.

[0108] Based on the above technical solution, since there is at least one overlapping time domain unit between the first SRS resource and the second SRS resource, when the terminal device to be positioned is positioned by measuring the first SRS signal and the second SRS signal, the phase shift existing in the phase measured by the network device on the first SRS resource in the time domain and the phase shift existing in the phase measured by the network device on the second SRS resource in the time domain are the same or similar. This helps to remove or reduce the error introduced by the phase shift and improve the positioning accuracy.

[0109] For example, the existence of at least one overlapping time domain unit between the second SRS resource and the first SRS resource includes the following two cases, namely, (1) there is no offset of one time domain unit between the second SRS resource and the first SRS resource, (2) there is an offset of one time domain unit between the second SRS resource and the first SRS resource.

[0110] For example, the time domain unit is a symbol.

[0111] Regarding the eighth aspect, in some implementations of the eighth aspect, the network device is the serving network device of the terminal device to be positioned, and the method further includes the position management device transmitting first reference SRS resource information to the network device, and the first reference SRS resource information is related to the first SRS resource.

[0112] Based on the above technical solution, after the serving network device of the terminal device to be positioned receives the first reference SRS resource information, it helps to set, for the terminal device to be positioned, a second SRS resource having at least one overlapping time domain unit with the first SRS resource based on the first reference SRS resource information.

[0113] For example, the first reference SRS resource information includes one or more of a start symbol position, a number of occupied symbols, a transmission periodicity and an offset, a transmission comb and an offset, a cyclic shift, a frequency domain position and an offset, or a frequency hopping setting.

[0114] For example, the first reference SRS resource information includes at least a start symbol position, a number of occupied symbols, a transmission periodicity, and an offset.

[0115] Based on the above technical solution, the time domain position of the first SRS resource is determined based on the first reference SRS resource information, which helps the network device to configure for the terminal device to be positioned a second SRS resource having at least one time domain unit overlapping with the first SRS resource.

[0116] For example, the first reference SRS resource information includes identification information of the first SRS resource.

[0117] Based on the above technical solution, the first SRS resource is determined based on the first reference SRS resource information, which helps the network device to configure for the terminal device to be positioned a second SRS resource having at least one time domain unit overlapping with the first SRS resource.

[0118] Regarding the eighth aspect, in some implementations of the eighth aspect, the position management device transmitting the first reference SRS resource information to the network device includes the position management device transmitting to the network device a plurality of reference SRS resource information and priority information of each of the plurality of reference SRS resource information, and the plurality of reference SRS resource information includes the first reference SRS resource information. The method further includes the position management device receiving information about the second SRS resource from the network device.

[0119] Regarding the eighth aspect, in some implementations of the eighth aspect, the network device is the serving network device of the terminal device to be positioned, and the method further includes the location management device sending first indication information to the network device, where the first indication information indicates setting, for the terminal device to be positioned, a second SRS resource that completely overlaps with the first SRS resource in the time domain, or indicates setting, for the terminal device to be positioned, a second SRS resource that partially overlaps with the first SRS resource in the time domain.

[0120] Based on the above technical solution, the serving network device of the terminal device to be positioned may set a second SRS resource for the terminal device to be positioned based on the first indication information. Therefore, by measuring the first SRS signal and the second SRS signal, when the terminal device to be positioned is positioned, the phase shift present in the phase measured by the serving network device of the terminal device to be positioned on the first SRS resource in the time domain and the phase shift present in the phase measured by the serving network device of the terminal device to be positioned on the second SRS resource in the time domain are the same or similar. This helps to remove or reduce the error introduced by the phase shift and improves the positioning accuracy.

[0121] Regarding the eighth aspect, in some implementations of the eighth aspect, the network device is the serving network device of the terminal device to be positioned, and the method includes the location management device sending second indication information to the network device, where the second indication information indicates the offset between the first SRS resource and the second SRS resource.

[0122] Based on the above technical solution, the serving network device of the terminal device to be positioned may set a second SRS resource for the terminal device to be positioned based on the second indication information. Therefore, by measuring the first SRS signal and the second SRS signal, when the terminal device to be positioned is positioned, the phase shift existing in the phase measured by the serving network device of the terminal device to be positioned on the first SRS resource in the time domain and the phase shift existing in the phase measured by the serving network device of the terminal device to be positioned on the second SRS resource in the time domain are the same or similar. This helps to remove or reduce the error introduced by the phase shift and improve the positioning accuracy.

[0123] Regarding the eighth aspect, in some implementations of the eighth aspect, the network device is the serving network device of the terminal device to be positioned, and the method further includes the location management device receiving information about the second SRS resource from the network device. The location management device transmits information about the second SRS resource to the serving network device of the reference terminal device, and the information about the second SRS resource is for setting the first SRS resource for the reference terminal device.

[0124] Based on the above technical solution, the location management device transmits information about the second SRS resource to the serving network device of the reference terminal device, so that the serving network device of the reference terminal device may set the first SRS resource for the reference terminal device based on the information about the second SRS resource.

[0125] According to a ninth aspect, a positioning method is provided. The method may be executed by a terminal device to be positioned, or may be executed by a component (for example, a chip or a circuit) of the terminal device to be positioned. This is not limiting. For ease of explanation, hereinafter, an example in which the method is executed by a terminal device to be positioned is used in this specification for the purpose of explanation.

[0126] The method includes that a terminal device to be positioned receives resource configuration information of a second SRS resource from a network device, and there is at least one overlapping time domain unit between a first SRS resource and the second SRS resource, and the first SRS resource is used by a reference terminal device to transmit a first SRS signal. The terminal device to be positioned transmits a second SRS signal to the network device on the second SRS resource.

[0127] According to the above technical solution, the terminal device to be positioned transmits a second SRS signal on the second SRS resource. Since there is at least one overlapping time domain unit between the first SRS resource and the second SRS resource, when the terminal device to be positioned is positioned by measuring the first SRS signal and the second SRS signal, the phase shift existing in the phase measured by the network device on the first SRS resource in the time domain and the phase shift existing in the phase measured by the network device on the second SRS resource in the time domain are the same or similar. This helps to remove or reduce the error introduced by the phase shift and improve the positioning accuracy.

[0128] For example, the fact that there is at least one overlapping time domain unit between the second SRS resource and the first SRS resource includes the following two cases, that is, (1) there is no offset of a time domain unit between the second SRS resource and the first SRS resource, (2) There is an offset of one time domain unit between the second SRS resource and the first SRS resource.

[0129] For example, the time domain unit is a symbol.

[0130] According to the tenth aspect, a communication device is provided. The communication device includes a transceiver unit and a processing unit. The transceiver unit is configured to receive first reference SRS resource information from a location management device. The processing unit is configured to set a second SRS resource for a terminal device to be positioned based on the first reference SRS resource information.

[0131] Regarding the tenth aspect, in some implementations of the tenth aspect, the first reference SRS resource information includes one or more of a start symbol position, a number of occupied symbols, a transmission periodicity and an offset, a transmission comb and an offset, a cyclic shift, a frequency domain position and an offset, or a frequency hopping setting.

[0132] Regarding the tenth aspect, in some implementations of the tenth aspect, the first reference SRS resource information includes at least a start symbol position, a number of occupied symbols, a transmission periodicity, and an offset.

[0133] Regarding the tenth aspect, in some implementations of the tenth aspect, the first reference SRS resource information includes identification information of the first SRS resource.

[0134] Regarding the tenth aspect, in some implementations of the tenth aspect, there is at least one overlapping time domain unit between the second SRS resource and the first SRS resource, and the first reference SRS resource information is related to the first SRS resource.

[0135] According to the 11th aspect, a communication device is provided. The communication device includes a transceiver unit and a processing unit. The transceiver unit is configured to receive first reference SRS resource information from a location management device. The processing unit is configured to set a second SRS resource for a terminal device to be positioned based on the first reference SRS resource information, and there is at least one overlapping time domain unit between the second SRS resource and the first SRS resource, and the first reference SRS resource information is related to the first SRS resource.

[0136] Regarding the 11th aspect, in some implementations of the 11th aspect, the first reference SRS resource information includes one or more of a start symbol position, a number of occupied symbols, a transmission periodicity and an offset, a transmission comb and an offset, a cyclic shift, a frequency domain position and an offset, or a frequency hopping setting.

[0137] Regarding the 11th aspect, in some implementations of the 11th aspect, the first reference SRS resource information includes at least a start symbol position, a number of occupied symbols, a transmission periodicity, and an offset.

[0138] Regarding the 11th aspect, in some implementations of the 11th aspect, the first reference SRS resource information includes identification information of the first SRS resource.

[0139] According to the 12th aspect, a communication device is provided. The communication device includes a transceiver unit and a processing unit. The transceiver unit is configured to receive a first reference SRS resource from a location management device, and the first reference SRS resource information includes one or more of a start symbol position, a number of occupied symbols, a transmission periodicity and an offset, a transmission comb and an offset, a cyclic shift, a frequency domain position and an offset, or a frequency hopping setting. The processing unit is configured to set a second SRS resource for a terminal device to be positioned based on the first reference SRS resource information.

[0140] Regarding the 12th aspect, in some implementations of the 11th aspect, the first reference SRS resource information includes at least a start symbol position, a number of occupied symbols, a transmission periodicity, and an offset.

[0141] Regarding the 12th aspect, in some implementations of the 12th aspect, there is at least one overlapping time domain unit between the second SRS resource and the first SRS resource, and the first reference SRS resource information is related to the first SRS resource.

[0142] Regarding the 10th to 12th aspects, in some implementations of the 10th to 12th aspects, there is no offset in time domain units between the second SRS resource and the first SRS resource, or there is an offset of one time domain unit between the second SRS resource and the first SRS resource.

[0143] Regarding the 10th to 12th aspects, in some implementations of the 10th to 12th aspects, the offset is the offset between the start symbol position of the first SRS resource and the start symbol position of the second SRS resource, or the offset between the end symbol position of the first SRS resource and the end symbol position of the second SRS resource.

[0144] Regarding the 10th to 12th aspects, in some implementations of the 10th to 12th aspects, the first reference SRS resource information is related to the SRS resource of at least one reference terminal device.

[0145] Regarding the 10th to 12th aspects, in some implementations of the 10th to 12th aspects, the first reference SRS resource information is related to the SRS resource of the first reference terminal device, and the first reference SRS resource information is information about the SRS resource of the first reference terminal device, or the first reference SRS resource information is obtained based on the SRS resource of the first reference terminal device.

[0146] Regarding the 10th to 12th aspects, in some implementations of the 10th to 12th aspects, the first reference SRS resource information is related to the SRS resources of at least two reference terminal devices, and the first reference SRS resource information is information about the SRS resources of at least two reference terminal devices, or the first SRS resource information is obtained based on the SRS resources of at least two reference terminal devices.

[0147] Regarding the 10th to 12th aspects, in some implementations of the 10th to 12th aspects, the transceiver unit is specifically configured to receive a plurality of reference SRS resource information and the priority information of each of the plurality of reference SRS resource information from a location management device, and the plurality of SRS resource information includes the first reference SRS resource information. The transceiver unit is further configured to transmit information about the second SRS resource to the location management device.

[0148] Regarding the 10th to 12th aspects, in some implementations of the 10th to 12th aspects, the transceiver unit is further configured to receive first instruction information from a location management device, and the first instruction information indicates setting, for a terminal device to be positioned, a second SRS resource that completely overlaps with the first SRS resource in the time domain, or indicates setting, for the terminal device to be positioned, a second SRS resource that partially overlaps with the first SRS resource in the time domain, and the first reference SRS resource information is related to the first SRS resource. The processing unit is specifically configured to set the second SRS resource for the terminal device to be positioned based on the first reference SRS resource information and the first instruction information.

[0149] Regarding the 10th to 12th aspects, in some implementations of the 10th to 12th aspects, the transceiver unit is further configured to receive second instruction information from the location management device, the second instruction information indicates an offset between the first SRS resource and the second SRS resource, and the first reference SRS resource information is related to the first SRS resource. Specifically, the processing unit is configured to set the second SRS resource for the terminal device to be positioned based on the first reference SRS resource information and the second instruction information.

[0150] Regarding the 10th to 12th aspects, in some implementations of the 10th to 12th aspects, the transceiver unit is further configured to receive third instruction information from the location management device, the third instruction information indicates that the first SRS resource is a reference resource, and the first reference SRS resource information is related to the first SRS resource.

[0151] Regarding the 10th to 12th aspects, in some implementations of the 10th to 12th aspects, the transceiver unit is specifically configured to receive reference resource information from the location management device, and the reference resource information includes the first reference SRS resource information.

[0152] According to the 13th aspect, a communication device is provided. The communication device includes a transceiver unit. The transceiver unit is configured to transmit first reference SRS resource information to a network device, and the first reference SRS resource information is used by the network device to set a second SRS resource for the terminal device to be positioned. The transceiver unit is further configured to receive information about the second SRS resource from the network device.

[0153] In connection with the 13th aspect, in some implementations of the 13th aspect, the first reference SRS resource information includes one or more of the start symbol position, the number of occupied symbols, the transmission periodicity and offset, the transmission comb and offset, the cyclic shift, the frequency domain position and offset, or the frequency hopping setting.

[0154] In connection with the 13th aspect, in some implementations of the 13th aspect, the first reference SRS resource information includes at least the start symbol position, the number of occupied symbols, the transmission periodicity, and the offset.

[0155] In connection with the 13th aspect, in some implementations of the 13th aspect, the first reference SRS resource information includes the identification information of the first SRS resource.

[0156] In connection with the 13th aspect, in some implementations of the 13th aspect, there is at least one overlapping time domain unit between the second SRS resource and the first SRS resource, and the first reference SRS resource information is related to the first SRS resource.

[0157] According to the 14th aspect, a communication device is provided. The communication device includes a transceiver unit. The transceiver unit is configured to transmit the first reference SRS resource information to a network device, and the first reference SRS resource information is used by the network device to set a second SRS resource for a terminal device to be positioned. The transceiver unit is further configured to receive information about the second SRS resource from the network device, there is at least one overlapping time domain unit between the second SRS resource and the first SRS resource, and the first reference SRS resource information is related to the first SRS resource.

[0158] In connection with the 14th aspect, in some implementations of the 14th aspect, the first reference SRS resource information includes one or more of the start symbol position, the number of occupied symbols, the transmission periodicity and offset, the transmission comb and offset, the cyclic shift, the frequency domain position and offset, or the frequency hopping setting.

[0159] In connection with the 14th aspect, in some implementations of the 14th aspect, the first reference SRS resource information includes at least the start symbol position, the number of occupied symbols, the transmission periodicity, and the offset.

[0160] In connection with the 14th aspect, in some implementations of the 14th aspect, the first reference SRS resource information includes the identification information of the first SRS resource.

[0161] According to the 15th aspect, a communication device is provided. The communication device includes a transceiver unit. The transceiver unit is configured to transmit a first reference SRS resource to a network device, and the first reference SRS resource information is used by the network device to configure a second SRS resource for a terminal device to be positioned. The first reference SRS resource information includes one or more of the start symbol position, the number of occupied symbols, the transmission periodicity and offset, the transmission comb and offset, the cyclic shift, the frequency domain position and offset, or the frequency hopping setting. The transceiver unit is further configured to receive information about the second SRS resource from the network device.

[0162] Regarding the 15th aspect, in some implementations of the 15th aspect, the first reference SRS resource information includes at least the start symbol position, the number of occupied symbols, the transmission periodicity, and the offset.

[0163] Regarding the 15th aspect, in some implementations of the 15th aspect, there is at least one overlapping time domain unit between the second SRS resource and the first SRS resource, and the first reference SRS resource information is related to the first SRS resource.

[0164] Regarding the 13th to 15th aspects, in some implementations of the 13th to 15th aspects, there is no offset in time domain units between the second SRS resource and the first SRS resource, or there is an offset of one time domain unit between the second SRS resource and the first SRS resource.

[0165] Regarding the 13th to 15th aspects, in some implementations of the 13th to 15th aspects, the offset is the offset between the start symbol position of the first SRS resource and the start symbol position of the second SRS resource, or the offset between the end symbol position of the first SRS resource and the end symbol position of the second SRS resource.

[0166] Regarding the 13th to 15th aspects, in some implementations of the 13th to 15th aspects, the first reference SRS resource information is related to the SRS resource of at least one reference terminal device.

[0167] Regarding the 13th to 15th aspects, in some implementations of the 13th to 15th aspects, the first reference SRS resource information is related to the SRS resource of the first reference terminal device, and the first reference SRS resource information is information about the SRS resource of the first reference terminal device, or the first reference SRS resource information is obtained based on the SRS resource of the first reference terminal device.

[0168] Regarding the 13th aspect to the 15th aspect, in some implementations of the 13th aspect to the 15th aspect, the first reference SRS resource information is related to the SRS resources of at least two reference terminal devices, and the first reference SRS resource information is information about the SRS resources of at least two reference terminal devices, or the first SRS resource information is information obtained based on the SRS resources of at least two reference terminal devices.

[0169] Regarding the 13th aspect to the 15th aspect, in some implementations of the 13th aspect to the 15th aspect, the transceiver unit is specifically configured to send a plurality of reference SRS resource information and the priority information of each of the plurality of reference SRS resource information to the network device, and the plurality of reference SRS resource information includes the first reference SRS resource information.

[0170] Regarding the 13th aspect to the 15th aspect, in some implementations of the 13th aspect to the 15th aspect, the transceiver unit is further configured to send the first instruction information to the network device, and the first instruction information indicates setting, for the terminal device to be positioned, a second SRS resource that completely overlaps with the first SRS resource in the time domain, or setting, for the terminal device to be positioned, a second SRS resource that partially overlaps with the first SRS resource in the time domain, and the first reference SRS resource information is related to the first SRS resource.

[0171] Regarding the 13th aspect to the 15th aspect, in some implementations of the 13th aspect to the 15th aspect, the transceiver unit is further configured to send the second instruction information to the network device, and the second instruction information indicates the offset between the first SRS resource and the second SRS resource, and the first reference SRS resource information is related to the first SRS resource.

[0172] Regarding the 13th to 15th aspects, in some implementations of the 13th to 15th aspects, the transceiver unit is further configured to send third indication information to the network device, where the third indication information indicates that the first SRS resource is a reference resource, and the first reference SRS resource information is related to the first SRS resource.

[0173] Regarding the 13th to 15th aspects, in some implementations of the 13th to 15th aspects, the transceiver unit is specifically configured to send reference resource information to the network device, and the reference resource information includes the first reference SRS resource information.

[0174] According to the 16th aspect, a communication device is provided. The communication device includes a transceiver unit. The transceiver unit is configured to receive a first SRS signal from a reference terminal device on a first SRS resource. The transceiver unit is further configured to receive a second SRS signal from a terminal device to be positioned on a second SRS resource, and there is at least one overlapping time domain unit between the second SRS resource and the first SRS resource. The transceiver unit is further configured to send positioning information to a position management device, where the positioning information is obtained by measuring the first SRS signal and the second SRS signal, and the positioning information is for positioning the terminal device to be positioned.

[0175] Regarding the 16th aspect, in some implementations of the 16th aspect, there is no offset of one time domain unit between the second SRS resource and the first SRS resource, or there is an offset of one time domain unit between the second SRS resource and the first SRS resource.

[0176] Regarding the 16th aspect, in some implementations of the 16th aspect, the offset is the offset between the start symbol position of the first SRS resource and the start symbol position of the second SRS resource, or the offset between the end symbol position of the first SRS resource and the end symbol position of the second SRS resource.

[0177] Regarding the 16th aspect, in some implementations of the 16th aspect, the communication device further includes a processing unit. The transceiver unit is further configured to receive first reference SRS resource information from a location management device, and the first reference SRS resource information is related to the first SRS resource. The processing unit is configured to set a second SRS resource for a terminal device to be positioned based on the first reference SRS resource information.

[0178] In connection with the 16th aspect, in some implementations of the 16th aspect, the first reference SRS resource information includes one or more of a start symbol position, a number of occupied symbols, a transmission periodicity and an offset, a transmission comb and an offset, a cyclic shift, a frequency domain position and an offset, or a frequency hopping setting.

[0179] Regarding the 16th aspect, in some implementations of the 16th aspect, the first reference SRS resource information includes at least a start symbol position, a number of occupied symbols, a transmission periodicity, and an offset.

[0180] Regarding the 16th aspect, in some implementations of the 16th aspect, the first reference SRS resource information includes identification information of the first SRS resource.

[0181] Regarding the 16th aspect, in some implementations of the 16th aspect, the transceiver unit is specifically configured to receive a plurality of reference SRS resource information and the priority information of each of the plurality of reference SRS resource information from a location management device, and the plurality of SRS resource information includes the first reference SRS resource information. The transceiver unit is further configured to transmit information about the second SRS resource to the location management device.

[0182] Regarding the 16th aspect, in some implementations of the 16th aspect, the transceiver unit is further configured to receive first indication information from a location management device, and the first indication information indicates setting, for a terminal device to be positioned, a second SRS resource that completely overlaps with the first SRS resource in the time domain or setting, for the terminal device to be positioned, a second SRS resource that partially overlaps with the first SRS resource in the time domain.

[0183] Regarding the 16th aspect, in some implementations of the 16th aspect, the communication device further includes a processing unit. The transceiver unit is further configured to receive first indication information from a location management device, and the first indication information indicates setting, for a terminal device to be positioned, a second SRS resource that completely overlaps with the first SRS resource in the time domain or setting, for the terminal device to be positioned, a second SRS resource that partially overlaps with the first SRS resource in the time domain. The processing unit is further configured to set the second SRS resource for the terminal device to be positioned and set the first SRS resource for a reference terminal device based on the first indication information.

[0184] Regarding the 16th aspect, in some implementation forms of the 16th aspect, the transceiver unit is further configured to receive second indication information from a location management device, and the second indication information indicates an offset between the first SRS resource and the second SRS resource.

[0185] Regarding the 16th aspect, in some implementations of the 16th aspect, the communication device further includes a processing unit. The transceiver unit is further configured to receive second indication information from the location management device, and the second indication information indicates an offset between the first SRS resource and the second SRS resource. The processing unit is further configured to set the second SRS resource for the terminal device to be positioned and set the first SRS resource for the reference terminal device based on the second indication information.

[0186] Regarding the 16th aspect, in some implementation forms of the 16th aspect, the transceiver unit is further configured to send information about the second SRS resource to the location management device.

[0187] Regarding the 16th aspect, in some implementation forms of the 16th aspect, the transceiver unit is further configured to receive information about the second SRS resource from the location management device. The network device sets the first SRS resource for the reference terminal device based on the information about the second SRS resource.

[0188] According to the 17th aspect, a communication device is provided. The communication device includes a transceiver unit and a processing unit. The transceiver unit is configured to receive positioning information from the network device, and the positioning information is obtained by measuring the first SRS signal and the second SRS signal. The first SRS signal is an SRS signal from the reference terminal device and is received by the network device on the first SRS resource. The second SRS signal is an SRS signal from the terminal device to be positioned and is received by the network device on the second SRS resource. There is at least one overlapping time domain unit between the second SRS resource and the first SRS resource. The processing unit is configured to position the terminal device to be positioned based on the positioning information.

[0189] Regarding the 17th aspect, in some implementations of the 17th aspect, there is no offset in time domain units between the second SRS resource and the first SRS resource, or there is an offset of one time domain unit between the second SRS resource and the first SRS resource.

[0190] Regarding the 17th aspect, in some implementations of the 17th aspect, the offset is the offset between the start symbol position of the first SRS resource and the start symbol position of the second SRS resource, or the offset between the end symbol position of the first SRS resource and the end symbol position of the second SRS resource.

[0191] Regarding the 17th aspect, in some implementation forms of the 17th aspect, the transceiver unit is further configured to send first reference SRS resource information to the network device, and the first reference SRS resource information is related to the first SRS resource.

[0192] Regarding the 17th aspect, in some implementations of the 17th aspect, the transceiver unit is specifically configured to send a plurality of reference SRS resource information and priority information of each of the plurality of reference SRS resource information to the location management device. The transceiver unit is further configured to receive information about the second SRS resource from the network device.

[0193] Regarding the 17th aspect, in some implementations of the 17th aspect, the transceiver unit is further configured to send first indication information to the network device, and the first indication information indicates setting, for the terminal device to be positioned, a second SRS resource that completely overlaps with the first SRS resource in the time domain, or setting, for the terminal device to be positioned, a second SRS resource that partially overlaps with the first SRS resource in the time domain.

[0194] Regarding the 17th aspect, in some implementation forms of the 17th aspect, the transceiver unit is further configured to transmit second indication information to the network device, and the second indication information indicates an offset between the first SRS resource and the second SRS resource.

[0195] Regarding the 17th aspect, in some implementation forms of the 17th aspect, the network device is the serving network device of the terminal device to be positioned, and the transceiver unit is further configured to receive information about the second SRS resource from the network device. The transceiver unit is further configured to transmit information about the second SRS resource to the serving network device of the reference terminal device, and the information about the second SRS resource is for setting the first SRS resource for the reference terminal device.

[0196] According to the 18th aspect, a communication device is provided. The communication device includes a transceiver unit. The transceiver unit is configured to receive resource configuration information of a second SRS resource from the network device. There is at least one overlapping time domain unit between the first SRS resource and the second SRS resource, and the first SRS resource is used by the reference terminal device to execute the transmission of the first SRS signal. The transceiver unit is further configured to transmit a second SRS signal to the network device on the second SRS resource.

[0197] According to the 19th aspect, a chip including a processor is provided. The processor is coupled to a memory and is configured to execute instructions in the memory to implement a method in any one of the 1st aspect and possible implementations of the 1st aspect, or implement a method in any one of the 2nd aspect and possible implementations of the 2nd aspect, or implement a method in any one of the 3rd aspect and possible implementations of the 3rd aspect, or implement a method in any one of the 7th aspect and possible implementations of the 7th aspect. Optionally, the device further includes a memory. Optionally, the device further includes a communication interface, and the processor is coupled to the communication interface.

[0198] In one implementation, the device is a network device. When the device is a network device, the communication interface may be a transceiver or an input / output interface.

[0199] In another implementation, the device is a chip or a chip system configured within a network device. When the device is a chip configured within a network device, the communication interface may be an input / output interface. The chip system includes at least one chip and may further include another circuit structure and / or individual devices.

[0200] Optionally, the transceiver may be a transceiver circuit. Optionally, the input / output interface may be an input / output circuit.

[0201] According to a 20th aspect, a communication device including a processor is provided. The processor is coupled to a memory and configured to execute instructions in the memory to implement a method according to any one of the 4th aspect and possible implementations of the 4th aspect, a method according to any one of the 5th aspect and possible implementations of the 5th aspect, a method according to any one of the 6th aspect and possible implementations of the 6th aspect, or a method according to any one of the 8th aspect and possible implementations of the 8th aspect. Optionally, the device further includes a memory. Optionally, the device further includes a communication interface, and the processor is coupled to the communication interface.

[0202] In one implementation, the device is a location management device. When the device is a location management device, the communication interface may be a transceiver or an input / output interface.

[0203] In another implementation, the device is a chip or a chip system configured within a location management device. When the device is a chip configured within a location management device, the communication interface may be an input / output interface. The chip system includes at least one chip and may further include another circuit structure and / or individual devices.

[0204] Optionally, the transceiver may be a transceiver circuit. Optionally, the input / output interface may be an input / output circuit.

[0205] According to a 21st aspect, a communication device including a processor is provided. The processor is coupled to a memory and configured to execute instructions in the memory to implement a method according to any one of the 9th aspect and possible implementations of the 9th aspect. Optionally, the device further includes a memory. Optionally, the device further includes a communication interface, and the processor is coupled to the communication interface.

[0206] In one implementation, the device is a terminal device. When the device is a terminal device, the communication interface may be a transceiver or an input / output interface.

[0207] In another implementation, the device is a chip or a chip system configured within a terminal device. When the device is a chip configured within a terminal device, the communication interface may be an input / output interface. The chip system includes at least one chip and may further include another circuit structure and / or individual devices.

[0208] Optionally, the transceiver may be a transceiver circuit. Optionally, the input / output interface may be an input / output circuit.

[0209] According to a 22nd aspect, the present application provides a processor including an input circuit, an output circuit, and a processing circuit. The processing circuit receives a signal through the input circuit, executes signal transmission through the output circuit, and the processor is configured to execute the method according to the above-described aspects.

[0210] In a specific implementation process, the processor may be a chip, the input circuit may be an input pin, the output circuit may be an output pin, and the processing circuit may be a transistor, a gate circuit, a trigger, various logic circuits, etc. The input signal received by the input circuit may be received and input, for example, by a receiver, but is not limited thereto. The signal output by the output circuit may be output to, for example, a transmitter and transmitted by the transmitter, but is not limited thereto. The input circuit and the output circuit may be the same circuit, and the circuit is used as the input circuit and the output circuit at different moments. The specific implementation of the processor and various circuits is not limited in the embodiments of the present application.

[0211] According to the 23rd aspect, the present application provides a processing device including a communication interface and a processor. The communication interface is coupled to the processor. The communication interface is configured to input and / or output information. The information includes at least one of instructions or data. The processor executes a computer program, and the processing device is configured to execute the method according to the above-described aspect.

[0212] According to the 24th aspect, the present application provides a processing device including a processor and a memory. The processor reads instructions stored in the memory, receives signals through a receiver, and executes signal transmission through a transmitter, and the processing device is configured to execute the method according to the above-described aspect.

[0213] Optionally, there is one or more processors. If there is a memory, there may be one or more memories.

[0214] Optionally, the memory may be integrated with the processor, or the memory and the processor may be disposed separately.

[0215] In a specific implementation process, the memory may be a non-transitory memory such as a read-only memory (ROM). The memory and the processor may be integrated on one chip or may be disposed separately on different chips. The type of the memory and the manner in which the memory and the processor are disposed are not limited in the embodiments of the present application.

[0216] Related information exchange processing, for example, transmitting the first reference SRS resource information may be a process of outputting the first reference SRS resource information from the processor, and receiving the first reference SRS resource information may be a process of inputting the received first reference SRS resource information to the processor. Specifically, the information output by the processor may be output to the transmitter, and the input information received by the processor may be from the receiver. The transmitter and the receiver may be collectively referred to as a transceiver.

[0217] The apparatuses according to the 23rd aspect and the 24th aspect may each be a chip or a chip system. The processor may be implemented by hardware or software. When the processor is implemented by hardware, the processor may be a logic circuit, an integrated circuit, etc. When the processor is implemented by software, the processor may be a general-purpose processor and is implemented by reading software code stored in the memory. The memory may be integrated within the processor or may be located outside the processor and exist independently.

[0218] According to the 25th aspect, the present application provides a computer program product. The computer program product includes a computer program (which may also be referred to as code or instructions). When the computer program code is executed, the computer can execute the method according to the above aspect.

[0219] According to the 26th aspect, the present application provides a computer-readable storage medium. The computer-readable storage medium stores a computer program (which may also be referred to as code or instructions). When the computer program code is executed on a computer, the computer can execute the method according to the above aspect.

[0220] According to a 27th aspect, the present application provides a system including the above-described network device, location management device, and terminal device. The network device is configured to execute a method in any one of the first aspect and possible implementations of the first aspect, or is configured to execute a method in any one of the second aspect and possible implementations of the second aspect, or is configured to execute a method in any one of the third aspect and possible implementations of the third aspect, or is configured to execute a method in any one of the seventh aspect and possible implementations of the seventh aspect. The location management device is configured to execute a method in any one of the fourth aspect and possible implementations of the fourth aspect, or is configured to execute a method in any one of the fifth aspect and possible implementations of the fifth aspect, or is configured to execute a method in any one of the sixth aspect and possible implementations of the sixth aspect, or is configured to execute a method in any one of the eighth aspect and possible implementations of the eighth aspect. The terminal device is configured to execute a method in any one of the ninth aspect and possible implementations of the ninth aspect.

Brief Description of Drawings

[0221]

Figure 1

[0222]

Figure 2

[0223]

Figure 3

[0224]

Figure 4

[0225]

Figure 5

[0226]

Figure 6

[0227]

Figure 7

[0228]

Figure 8

[0229]

Figure 9

[0230]

Figure 10

[0231]

Figure 11

[0232]

Figure 12

[0233]

Figure 13

Embodiments for Carrying Out the Invention

[0234] Hereinafter, with reference to the accompanying drawings, the technical solutions in the embodiments of the present application will be described.

[0235] The technical solutions in the embodiments of this application may be applied to various communication systems, such as long-term evolution (LTE) systems, frequency division duplex (FDD) systems, time division duplex (TDD) systems, universal mobile telecommunications system (UMTS), worldwide interoperability for microwave access (WiMAX) communication systems, 5th generation (5G) systems or new radio (NR) systems, 6th generation (6G) or future communication networks, etc. The 5G mobile communication system may be a non-standalone (NSA) 5G mobile communication system or a standalone (SA) 5G mobile communication system. Alternatively, the communication system may be a public land mobile network (PLMN), a device-to-device (D2D) communication system, a machine-to-machine (M2M) communication system, an Internet of things (IoT) communication system, a vehicle-to-everything (V2X) communication system, an uncrewed aerial vehicle (UAV) communication system, or another communication system.

[0236] The terminal device in the embodiments of the present application may also be referred to as a user equipment, an access terminal, a subscriber unit, a subscriber station, a mobile station, a remote station, a remote terminal, a mobile device, a user terminal, a terminal, a wireless communication device, a user agent, or a user device. Alternatively, the terminal device may be a mobile phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA), a handheld device with wireless communication capabilities, a computing device, another processing device connected to a wireless modem, an in-vehicle device, a wearable device, a terminal device in a 5G network, a terminal device in a future-developed PLMN, etc. This is not limited in the embodiments of the present application.

[0237] The network device in the embodiment of this application may be any device with a wireless transceiver function. The device may include, but is not limited to, an evolved NodeB (eNB), a radio network controller (RNC), a NodeB (NB), a home base station (e.g., a home evolved NodeB or a home NodeB, HNB), a baseband unit (BBU), an access point (AP) in a Wireless Fidelity (Wi-Fi) system, a wireless relay node, a wireless backhaul node, a transmission point (TP), a transmission and reception point (TRP), etc. Alternatively, the device may be a gNB or a transmission point (TRP or TP) in a 5G system such as an NR system, or one antenna panel or a group of antenna panels (including multiple antenna panels) of a base station in a 5G system, or a network node such as a baseband unit (BBU), a distributed unit (DU), etc. that constitutes a gNB or a transmission point.

[0238] Hereinafter, with reference to the accompanying drawings in the embodiments of the present application, the technical solutions in the embodiments of the present application will be described. In the description of the present application, unless otherwise specified, " / " indicates that the associated objects are in an "or" relationship. For example, A / B may represent A or B. In the present application, "and / or" describes the association relationship between related objects and indicates that three relationships may exist. For example, A and / or B may indicate that only A exists, both A and B exist, and only B exists, and A and B may be singular or plural. Additionally, in the description of the present application, unless otherwise specified, "a plurality of" means two or more. "At least two of the following items" or similar expressions indicate any combination of these items and include any combination of a single item or multiple items. For example, at least one of the items a, b, or c may represent a, b, c, "a and b", "b and c", "a and c", or "a, b, and c", and a, b, and c may be singular or plural. Additionally, in order to clearly explain the technical solutions in the embodiments of the present application, terms such as "first", "second", etc. are used in the embodiments of the present application to distinguish the same items or similar items that basically provide the same function or purpose. Those skilled in the art may understand that terms such as "first" and "second" do not limit the number and execution sequence, and terms such as "first" and "second" do not indicate a clear difference. Additionally, in the embodiments of the present application, terms such as "example", "for example", etc. are used to represent giving examples, illustrations, or explanations. In the embodiments of the present application, any embodiment or design scheme described as an "example" or "for example" should not be described as being more preferable or having more advantages than another embodiment or design scheme. Exactly, the use of terms such as "example" or "for example" is intended to present related concepts in a specific manner for ease of understanding.

[0239] Additionally, the network architectures and service scenarios described in the embodiments of the present application are intended to more clearly illustrate the technical solutions in the embodiments of the present application and do not constitute a limitation on the technical solutions provided in the embodiments of the present application. Those skilled in the art may be aware that with the development of network architectures and the emergence of new service scenarios, the technical solutions provided in the embodiments of the present application are also applicable to similar technical problems.

[0240] For the sake of easier understanding of the embodiments of the present application, first, a diagram of the communication system to which the embodiments of the present application are applied will be described in detail with reference to FIG. 1.

[0241] As shown in FIG. 1, the communication system includes a terminal device (represented as UE in FIG. 1), a radio access network (represented as next generation radio access network (NG-RAN) in FIG. 1), and a core network.

[0242] The radio access network includes one or more next generation evolved NodeBs (ng-eNBs) and gNBs. The ng-eNB represents an LTE base station accessing the 5G core network, and the gNB represents a 5G base station accessing the 5G core network. Communication between an ng-eNB and a gNB, between two ng-eNBs, or between two gNBs is performed via the Xn interface. The Xn interface may also be referred to as the XnAP interface.

[0243] The radio access network is connected to the core network through the NG-C interface.

[0244] The core network includes an access and mobility management function (AMF), a location management function (LMF), and other functions.

[0245] The LMF plays a role in supporting different types of location services related to the UE, including the positioning of the UE and the transmission of assistance data to the UE. The control plane and user plane of the LMF are the evolved serving mobile location center (E-SMLC) and the secure user plane location platform (SLP), respectively. The LMF may perform signal exchange with the RAN, such as an ng-eNB or gNB, and the UE. For example, information is exchanged between the LMF and the ng-eNB or gNB using new radio positioning protocol annex (NRPPa) messages. For example, configuration information of the positioning reference signal (PRS) or sounding reference signal (SRS), cell timing, cell location information, etc. are obtained. In other examples, UE capability information, assistance information, measurement information, etc. are transferred between the LMF and the UE using LTE Positioning Protocol (LPP) messages.

[0246] The AMF entity may receive a location service request related to the UE from the location service (LCS) entity of the 5G core (5GC) network, or the AMF may initiate some location services for a specific UE and transmit the location service request to the LMF.

[0247] The terminal device is connected to the radio access network via the ng-eNB through the LTE-Uu interface. Alternatively, the terminal device may be connected to the radio access network via the gNB through the NR-Uu interface.

[0248] It should be understood that the communication system may include one or more base stations (including ng-eNB or gNB).

[0249] Furthermore, it should be understood that the communication system may include one or more terminal devices, for example, one or more sets of terminal devices (e.g., the UE set shown in FIG. 1).

[0250] One gNB may transmit data or control signaling to one or more terminal devices. Alternatively, multiple gNBs may transmit data or control signaling to one terminal device simultaneously.

[0251] The ng-eNB in FIG. 1 may alternatively be replaced by a TP.

[0252] Positioning is an important function in a mobile communication system, and the system is required to provide the user's location information in real time. The 5G communication system has high-precision positioning requirements for positioning, requiring that the positioning error outdoors is less than 10 m and the positioning error indoors is less than 1 m.

[0253] Existing positioning technologies mainly include uplink positioning, downlink positioning, and uplink and downlink positioning. In uplink positioning, the base station measures the SRS signal transmitted by the UE. In downlink positioning, the UE measures the PRS signal transmitted by the base station. In uplink and downlink positioning, the UE is required to measure the PRS signal transmitted by the base station, and the base station is required to measure the SRS signal transmitted by the UE.

[0254] In actual positioning, since there are synchronization errors and phase errors between different UEs and / or base stations, errors occur in the estimation of delay or phase by different UEs and / or base stations. As a result, positioning errors occur and the requirements of the 5G communication system for positioning accuracy cannot be met.

[0255] From this perspective, embodiments of the present application provide a positioning method. A reference device is introduced to assist in positioning, remove positioning errors caused by synchronization errors or phase errors between different UEs and / or base stations, and improve positioning accuracy.

[0256] For the convenience of understanding the embodiments of the present application, first, with reference to FIG. 2, the time difference of arrival (TDOA) positioning technology will be described.

[0257] The TDOA positioning principle is to measure the difference in the time when a radio signal arrives at different monitoring stations, so as to position the transmitter that executes the transmission of the radio signal. Specifically, a location management device calculates the difference in the time when a radio signal arrives at two monitoring stations, obtains a distance difference based on this time difference, and obtains a hyperbola. Also, the location management device may obtain two or more hyperbolas based on the time differences measured by three or more monitoring stations. Further, the location management device positions the transmitter based on the intersection of two or more hyperbolas.

[0258] FIG. 2 is a diagram of the TDOA positioning technology. The terminal device in FIG. 2 corresponds to the transmitter that executes the transmission of the radio signal in the above-described TDOA positioning technology, and the base stations 1, 2, and 3 in FIG. 2 correspond to the monitoring stations that measure the radio signal in the above-described TDOA positioning technology. Specifically, the terminal device transmits a signal, and the base stations 1, 2, and 3 separately measure the signal transmitted by the terminal device.

[0259] In one example, the time difference between the signal transmitted by the terminal device reaching base station 1 and base station 2 is Δt1, and the time difference between the signal transmitted by the terminal device reaching base station 2 and base station 3 is Δt2. Multiply the time difference Δt1 by the electromagnetic wave velocity to obtain the distance difference L1, and multiply the time difference Δt2 by the electromagnetic wave velocity to obtain the distance difference L2. The location management device obtains the hyperbola MN shown in FIG. 2 based on the functional relationship between the location of base station 1, the location of base station 2, and the distance difference L1. The location management device obtains the hyperbola RS shown in FIG. 2 based on the functional relationship between the location of base station 2, the location of base station 3, and the distance difference L2. Furthermore, the location management device may locate the terminal device based on the intersection of hyperbola MN and hyperbola RS.

[0260] In FIG. 2, one of base station 1, base station 2, and base station 3 is the serving base station of the terminal device, and the other two base stations are the neighboring cell base stations of the terminal device.

[0261] The serving base station of the terminal device is the base station that currently provides a communication connection service to the terminal device. The neighboring cell base station of the terminal device is the base station adjacent to the serving base station. In other words, the serving base station is the base station of the serving cell of the terminal device. The neighboring cell base station is the base station of the neighboring cell of the serving cell of the terminal device.

[0262] It should be noted that in FIG. 2, the three base stations are for positioning the terminal device. However, this is not limited in this application. In actual applications, more than three base stations may be used for positioning the terminal device.

[0263] The foregoing describes the positioning method provided in the embodiments of the present application with reference to FIGS. 3 and 4.

[0264] FIG. 3 is a schematic flowchart of a positioning method according to an embodiment of the present application. Hereinafter, the steps included in method 300 will be described in detail.

[0265] S310: The location management device receives positioning information for determining the first measured TDOA and the second measured TDOA.

[0266] For example, the location management device may be part of the core network or integrated into a network device. For example, it may be the LMF shown in FIG. 1, or a location management component (LMC) within the serving network device of the terminal device to be positioned. The location management device is also called a location center. Note that in this application, the name of the location management device is not limited. In future developed technologies, another name may be assigned to the location management device.

[0267] The first measured TDOA is the difference between the time when a signal (e.g., SRS signal) transmitted by the terminal device to be positioned reaches the first location measurement device and the time when it reaches the second location measurement device. In other words, the first measured TDOA is the difference between the first relative time of arrival (RTOA) and the second RTOA. The first RTOA is obtained by measuring the signal from the terminal device to be positioned by the first location measurement device, and the second RTOA is obtained by measuring the signal from the terminal device to be positioned by the second location measurement device.

[0268] Referring to FIG. 4. The UE in FIG. 4 is the terminal device to be positioned, BS1 is the first location measurement device, BS2 is the second location measurement device, and the first RTOA is

Number

Number

Number

[0269] The second RTOA is

Number

Number

Number

Number

[0270] The first measured TDOA obtained by subtracting the first RTOA from the second RTOA is

Number

Number

[0271] The second measured TDOA is the difference between the time when a signal (e.g., SRS signal) transmitted by the reference terminal device reaches the first position measurement device and the time when it reaches the second position measurement device. In other words, the second measured TDOA is the difference between the third RTOA and the fourth RTOA. The third RTOA is obtained by measuring the signal from the reference device by the first position measurement device, and the fourth RTOA is obtained by measuring the signal from the reference device by the second position measurement device. The actual distance between the reference device and the position measurement device is known, or the actual distance between the reference device and the position measurement device may be obtained through laser ranging or infrared ranging, and the actual distance between the reference device and the position measurement device may also be obtained through calculations based on the actual positions of the reference device and the position measurement device. Alternatively, the actual position of the reference device is known, or the actual position of the reference device may be obtained by positioning the reference device via a global navigation satellite system (GNSS), Wi-Fi, Bluetooth, etc.

[0272] Refer to Figure 4. UE_r in Figure 4 is the reference device, and the third RTOA is

Number

Number

Number

[0273] The fourth RTOA is

Number

Number

Number

[0274] The second measured TDOA obtained by subtracting the third RTOA from the fourth RTOA is

Number

Number

[0275] For example, the location management device receiving positioning information includes the location management device receiving a first RTOA and a third RTOA from a first position measurement device. The location management device receives a second RTOA and a fourth RTOA from a second position measurement device.

[0276] In another example, the location management device receiving positioning information includes the location management device receiving a first RTOA, a second RTOA, a third RTOA, and a fourth RTOA from a first position measurement device. The second RTOA and the fourth RTOA are transmitted by the second position measurement device to the first position measurement device.

[0277] Alternatively, the location management device receives a first TDOA and a second TDOA from a first position measurement device. In other words, after the first position measurement device receives a second RTOA and a fourth RTOA from the second position measurement device, the first position measurement device obtains a first TDOA based on the first RTOA and the second RTOA, then obtains a second TDOA based on the third RTOA and the fourth RTOA, and transmits the first TDOA and the second TDOA to the location management device.

[0278] In yet another example, the location management device receiving positioning information includes the location management device receiving a first RTOA, a second RTOA, a third RTOA, and a fourth RTOA from a second position measurement device. The first RTOA and the third RTOA are transmitted by the first position measurement device to the second position measurement device.

[0279] Alternatively, the location management device receives a first TDOA and a second TDOA from a second position measurement device. In other words, after the second position measurement device receives a first RTOA and a third RTOA from the first position measurement device, the second position measurement device obtains a first TDOA based on the first RTOA and the second RTOA, then obtains a second TDOA based on the third RTOA and the fourth RTOA, and transmits the first TDOA and the second TDOA to the location management device.

[0280] As described above, when the terminal device to be positioned is positioned using the TDOA positioning technology, the position of the terminal device to be positioned is obtained based on the intersection of at least two hyperbolas, and at least two hyperbolas are obtained based on at least two TDOAs. Therefore, in order to position the terminal device to be positioned, the positioning information may further be for determining a third measured TDOA and a fourth measured TDOA. The third measured TDOA is the difference between the time when the signal transmitted by the terminal device to be positioned reaches the third position measurement device and the time when it reaches the fourth position measurement device. For details of the third measured TDOA, refer to the first measured TDOA. The fourth measured TDOA is the difference between the time when the signal transmitted by the reference device reaches the third position measurement device and the time when it reaches the fourth position measurement device. For details of the fourth measured TDOA, refer to the second measured TDOA. The first position measurement device, the second position measurement device, the third position measurement device, and the fourth position measurement device include at least three different position measurement devices.

[0281] Refer to FIG. 4. BS1 in FIG. 4 is the third position measurement device, and BS3 is the fourth position measurement device. Similar to the expression of the first measured TDOA, the third measured TDOA is

Number

Number

Number

[0282] Similar to the expression of the second measured TDOA, the fourth measured TDOA is [Number] represented as [Number] represents the fourth measured TDOA, [Number] represents the theoretical transmission time between UE_r and BS3 of the SRS signal transmitted by UE_r.

[0283] S320: The location management device determines the second theoretical TDOA based on the first theoretical TDOA and the differences between the first measured TDOA and the second measured TDOA.

[0284] The first theoretical TDOA is the theoretical difference between the time when the signal transmitted by the reference device reaches the first location measurement device and the time when it reaches the second location measurement device.

[0285] The second theoretical TDOA is the theoretical difference between the time when the signal transmitted by the terminal device to be located reaches the first location measurement device and the time when it reaches the second location measurement device.

[0286] For example, when the difference between the first measured TDOA and the second measured TDOA is obtained by subtracting the second measured TDOA from the first measured TDOA, the second theoretical TDOA is equal to the sum of the first theoretical TDOA and the difference between the first measured TDOA and the second measured TDOA.

[0287] The second measured TDOA ( [Number] ) from the first measured TDOA (i.e., [Number] Subtract from The process of obtaining the difference is [Number] represented as [Number] represents the first TDOA, [Number] and [Number] is the actual distance between UE_r and BS2, c represents the electromagnetic wave velocity, [Number] and [Number] is the actual distance between UE_r and BS1. When the position of the reference device, or the actual distance between the reference device and the position measurement device (including the first position measurement device and the second position measurement device) is known, it is [Number] equivalent to being known. Furthermore, the location management device may [Number] obtain a second theoretical TDOA based on. That is, the second theoretical TDOA is [Number] as follows.

[0288] For example, when the difference between the first measured TDOA and the second measured TDOA is obtained by subtracting the first measured TDOA from the second measured TDOA, the second theoretical TDOA is equal to the difference obtained by subtracting the difference between the first measured TDOA and the second measured TDOA from the first theoretical TDOA.

[0289] The first measured TDOA (

Number

Number

Number

Number

Number

Number

[0290] Similarly, the location management device determines the fourth theoretical TDOA based on the third theoretical TDOA and the difference between the first measured TDOA and the second measured TDOA. The third theoretical TDOA is the theoretical difference between the time when the signal transmitted by the reference device reaches the third position measurement device and the time when it reaches the fourth position measurement device. The fourth theoretical TDOA is the theoretical difference between the time when the signal transmitted by the terminal device to be located reaches the third position measurement device and the time when it reaches the fourth position measurement device.

[0291] For example, the fourth measured TDOA (

Number

Number

Number

Number

Number

Number

Number

Number

Number

[0292] S330: The position management device positions the terminal device to be positioned based on the second theoretical TDOA.

[0293] A method for a location management device to locate a terminal device to be located based on a second theory TDOA is that the location management device obtains a distance difference L1 based on the second theory TDOA and the electromagnetic wave velocity, and further obtains a hyperbola (for example, hyperbola 1 shown in FIG. 4) based on the functional relationship between the position of the first position measurement device, the position of the second position measurement device, and the distance difference L1.

[0294] It will be understood that the location management device further locates the terminal device to be located based on a fourth theory TDOA, that is, obtains a distance difference L2 based on the fourth theory TDOA and the electromagnetic wave velocity, and further obtains another hyperbola (for example, hyperbola 2 shown in FIG. 4) based on the functional relationship between the position of the third position measurement device, the position of the fourth position measurement device, and the distance difference L2. The intersection of hyperbola 1 and hyperbola 2 is the position of the terminal device to be located.

[0295] In the embodiments of the present application, when a reference device is introduced, subtraction is performed between the measured TDOA obtained by measuring the signal transmitted by the terminal device to be located and the measured TDOA obtained by measuring the signal transmitted by the reference device to remove the error introduced by the clock offset or phase shift of the position measurement device, and the theoretical TDOA between the terminal device to be located and the position measurement device is obtained. When the location management device locates the terminal device to be located based on the theoretical TDOA, a more accurate position of the terminal device to be located can be determined.

[0296] However, in actual measurement, when the position measurement device measures the signal from the terminal device to be located, the phase measured in the time domain has a phase shift. For example, the first position measurement device measures the signal from the terminal device to be located. When the phase measured in the time domain by the first position measurement device has a phase shift, the first RTOA is

Number

[0297] From this perspective, in one embodiment of the present invention, a positioning method for removing or reducing the error caused by the phase shift in the positioning measurement process is further provided. Thereby, the positioning accuracy is improved.

[0298] FIG. 5 is a schematic flowchart of a positioning method according to another embodiment of the present application. Hereinafter, the steps included in method 500 will be described in detail.

[0299] S510: Network device #1 receives a first SRS signal from the first reference terminal device.

[0300] For example, network device #1 is the serving network device of the terminal device to be positioned, and the terminal device to be positioned is a terminal device with an unknown location. In other examples, network device #1 is a network device adjacent to the serving network device of the terminal device to be positioned. In yet another example, network device #1 is the serving network device of the first reference terminal device. The first reference terminal device is a device having the ability to transmit an SRS signal. The actual distance between the first reference terminal device and the network device (including network device #1) is known, or the actual distance between the first reference terminal device and the network device may be obtained through laser ranging or infrared ranging, and the actual distance between the first reference terminal device and the network device may be obtained through calculations based on the actual positions of the first reference terminal device and the network device. The actual position of the first reference terminal device is known, or the actual position of the first reference terminal device may be obtained by positioning the first reference terminal device via GNSS, Wi-Fi, Bluetooth, etc.

[0301] Specifically, network device #1 receives the first SRS signal from the first reference terminal device on the first SRS resource. Correspondingly, the first reference terminal device transmits the first SRS signal on the first SRS resource.

[0302] Optionally, if Network Device #1 is not the serving network device of the first reference terminal device, before Network Device #1 receives the first SRS signal, method 500 further includes Network Device #1 receiving information about the first SRS resource from a location management device, where the information about the first SRS resource is for determining the first SRS resource. Correspondingly, Network Device #1 determines the first SRS resource based on the information about the first SRS resource and receives the first SRS signal on the first SRS resource.

[0303] For example, the information about the first SRS resource includes resource configuration information of the first SRS resource and / or an identifier (ID) of the first SRS resource. The resource configuration information of the first SRS includes one or more of start symbol position, number of occupied symbols, transmission periodicity and offset, transmission comb and offset, cyclic shift, frequency domain position and offset, or frequency hopping setting. The ID of the first SRS resource identifies the first SRS resource, and the ID of the first SRS resource may also be referred to as the number of the first SRS resource.

[0304] S520: Network Device #1 receives a second SRS signal from the terminal device to be positioned.

[0305] Specifically, Network Device #1 receives the second SRS signal from the terminal device to be positioned on the second SRS resource. Correspondingly, the terminal device to be positioned transmits the second SRS signal on the second SRS resource.

[0306] In a possible implementation, there is at least one overlapping time domain unit between the first SRS resource and the second SRS resource. The time domain unit may be a frame, subframe, slot, symbol, millisecond (ms), etc.

[0307] For example, the existence of at least one overlapping time domain unit between a first SRS resource and a second SRS resource includes the following multiple cases, that is, whether there is no offset in terms of a time domain unit between the first SRS resource and the second SRS resource, or whether there is an offset of one time domain unit between the first SRS resource and the second SRS resource.

[0308] The fact that there is no offset by a time domain unit between the first SRS resource and the second SRS resource means that the start symbol position of the first SRS resource is the same as the start symbol position of the second SRS resource, and / or the end symbol position of the first SRS resource is the same as the end symbol position of the second SRS resource. FIG. 6 shows an example where there is no offset of a time domain unit between the first SRS resource and the second SRS resource. As shown in FIG. 6(a), both the first SRS resource and the second SRS resource occupy symbols 11 to 14 in the time domain. In other words, the start symbol position of the first SRS resource is the same as the start symbol position of the second SRS resource, and / or the end symbol position of the first SRS resource is the same as the end symbol position of the second SRS resource. As shown in FIG. 6(b), the first SRS resource occupies symbols 11 and 12, and the second SRS resource occupies symbols 11 to 14. In other words, the start symbol position of the first SRS resource is the same as the start symbol position of the second SRS resource. As shown in FIG. 6(c), the first SRS resource occupies symbols 11 to 14, and the second SRS resource occupies symbols 13 and 14. In other words, the end symbol position of the first SRS resource is the same as the end symbol position of the second SRS resource.

[0309] As shown in FIG. 6(a), when the time domain position of the first SRS resource is exactly the same as the time domain position of the second SRS resource, the first SRS resource and the second SRS resource may completely overlap in the time domain. As shown in FIG. 6(b) or (c), when the time domain position of the first SRS resource is partially the same as the time domain position of the second SRS resource, the first SRS resource and the second SRS resource may partially overlap in the time domain.

[0310] When there is an offset of one time domain unit between the first SRS resource and the second SRS resource, the offset is the offset between the n-th time domain unit of the first SRS resource and the n-th time domain unit of the second SRS resource. For example, the offset is the offset between the start symbol position of the first SRS resource and the start symbol position of the second SRS resource, or the offset between the end symbol position of the first SRS resource and the end symbol position of the second SRS resource. FIG. 7 shows an example where there is an offset of one time domain unit between the first SRS resource and the second SRS resource. As shown in FIG. 7(a), the first SRS resource occupies symbols 11 and 13, and the second SRS resource occupies symbols 11 to 14. In other words, there is an offset of one symbol between the start symbol position of the first SRS resource and the start symbol position of the second SRS resource, or there is an offset of one symbol between the end symbol position of the first SRS resource and the end symbol position of the second SRS resource. As shown in FIG. 7(b), the first SRS resource occupies symbols 12 to 14, and the second SRS resource occupies symbols 11 and 12. In other words, there is an offset of one symbol between the start symbol position of the first SRS resource and the start symbol position of the second SRS resource, and there is an offset of one symbol between the second symbol position of the first SRS resource and the second symbol position of the second SRS resource. As shown in FIG. 7(c), the first SRS resource occupies symbols 11 to 13, and the second SRS resource occupies symbols 13 and 14. In other words, there is an offset of one symbol between the end symbol position of the first SRS resource and the end symbol position of the second SRS resource.

[0311] As shown in (b) or (c) of FIG. 7, when the definition of the offset in time domain units is different between the first SRS resource and the second SRS resource, the offset between the first SRS resource and the second SRS resource may also be different. As shown in (b) of FIG. 7, when the offset in time domain units between the first SRS resource and the second SRS resource is the offset between the end symbol positions, there is an offset of two symbols between the first SRS resource and the second SRS resource. As shown in (c) of FIG. 7, when the offset between the first SRS resource and the second SRS resource is the offset between the start symbol positions, there is an offset of two symbols between the first SRS resource and the second SRS resource.

[0312] It should be noted that in the present embodiment of the present application, the offset existing between the first SRS resource and the second SRS resource is not limited to one time domain unit. When there is at least one overlapping time domain unit between the first SRS resource and the second SRS resource, there may be an offset of two or more time domain units between the first SRS resource and the second SRS resource.

[0313] In another possible implementation, the second SRS resource is adjacent to the first SRS resource in the time domain, and the number of time domain units by which the second SRS resource is separated from the first SRS resource does not exceed a preset value.

[0314] For example, when the time domain position of the second SRS resource is before the time domain position of the first SRS resource, the number of symbols by which the end symbol position of the second SRS resource is separated from the start symbol position of the first SRS resource does not exceed a preset value. Alternatively, when the time domain position of the first SRS resource is before the time domain position of the second SRS resource, the number of symbols by which the end symbol position of the first SRS resource is separated from the start symbol position of the second SRS resource does not exceed a preset value. As shown in FIG. 8(a), the first SRS resource occupies symbol 10 and symbol 11, and the second SRS resource occupies symbol 11 and symbol 14. When the end symbol position of the first SRS resource (i.e., symbol 11) and the start symbol position of the second SRS resource (i.e., symbol 13) are separated by one symbol, the first SRS resource and the second SRS resource are separated by one symbol in the time domain. In another example, when the time domain units occupied by the second SRS resource and the first SRS resource are arranged alternately, the number of symbols by which any symbol of the second SRS resource is separated from an adjacent symbol occupied by the first SRS resource does not exceed a preset value. As shown in FIG. 8(b), when symbol 11 occupied by the second SRS resource is adjacent to symbol 10 and symbol 12 occupied by the first SRS resource, and the number of symbols by which symbol 11 is separated from symbol 10 and the number of symbols by which symbol 11 is separated from symbol 12 are 0, the number of symbols by which the first SRS resource is separated from the second SRS resource is 0.

[0315] For example, the time domain unit is a symbol, and the preset value is 1. In other words, the second SRS resource and the first SRS resource are separated by at most one symbol in the time domain.

[0316] In an embodiment of the present application, the relationship between the first SRS resource and the second SRS resource in the frequency domain is not limited, and it should be noted that the first SRS resource and the second SRS resource may or may not overlap in the frequency domain. As shown in FIG. 6, neither the first SRS resource nor the second SRS resource overlaps in the frequency domain. Alternatively, as shown in FIG. 8, neither the first SRS resource nor the second SRS resource overlaps in the frequency domain.

[0317] Optionally, if network device #1 is not the serving network device of the terminal device to be positioned, before network device #1 receives the second SRS signal, method 500 further includes network device #1 receiving information about the second SRS resource from a location management device, and the information about the second SRS resource is for determining the second SRS resource. Correspondingly, network device #1 determines the second SRS resource based on the information about the second SRS resource and receives the second SRS signal on the second SRS resource.

[0318] For example, the information about the second SRS resource includes resource configuration information of the second SRS resource and / or the ID of the second SRS resource. For further description of the information about the second SRS resource, refer to the above description of the information about the first SRS resource.

[0319] Optionally, before S510 and S520, method 500 further includes network device #1 receiving a measurement request message from a location management device. The measurement request message is for requesting network device #1 to measure a second SRS signal from a terminal device to be positioned and to measure a first SRS signal from a first reference terminal device. For example, the location management device transmits a measurement request message to network device #1 via the NRPPa protocol, in other words, the location management device transmits an NRPPa measurement request message to network device #1.

[0320] S530: Network device #1 transmits positioning information to the location management device. Correspondingly, the location management device receives the positioning information from network device #1.

[0321] The positioning information is obtained by network device #1 by measuring the first SRS signal and the second SRS signal, and the positioning information is for positioning the terminal device to be positioned. For example, the positioning information includes RTOA#1 and RTOA#2. RTOA#1 is the relative arrival time when the first SRS signal reaches network device #1, and RTOA#2 is the relative arrival time when the second SRS signal reaches network device #1. In another example, the positioning information includes RTOA#1 and RTOA#2. AOA#1 is the angle of arrival when the first SRS signal reaches network device #1, and AOA#2 is the angle of arrival when the second SRS signal reaches network device #1. In yet another example, the positioning information includes RTOA#1, RTOA#2, AOA#1, and AOA#2. Optionally, the positioning information further includes reference signal received power (RSRP)#1 obtained by network device #1 by measuring the first SRS signal and RSRP#2 obtained by serving network device #1 by measuring the second SRS signal.

[0322] Optionally, the network device #1 transmitting positioning information to the location management device includes the network device #1 transmitting a measurement response message to the location management device, and the measurement response message includes the positioning information. For example, the network device #1 transmits a measurement response message to the location management device via the NRPPa protocol. In other words, the network device #1 transmits an NRPPa measurement response message to the location management device.

[0323] Optionally, method 500 further includes the network device #1 receiving a positioning deactivation message from the location management device. Further, the network device #1 no longer measures the first SRS signal and the second SRS signal. For example, the location management device transmits a positioning deactivation message to the network device #1 via the NRPPa protocol. In other words, the location management device transmits an NRPPa positioning deactivation message to the network device #1.

[0324] S540: The location management device positions the terminal device to be positioned based on the positioning information.

[0325] After receiving the positioning information, the location management device may position the terminal device to be positioned based on the positioning information. When the positioning information includes RTOA#1 and RTOA#2, the location management device may use the TDOA positioning technology to position the terminal device to be positioned. When the positioning information includes AOA#1 and AOA#2, the location management device may use the AOA positioning technology to position the terminal device to be positioned.

[0326] Hereinafter, an example in which the location management device positions the terminal device to be positioned by the method described in FIG. 3 is used to explain the principle by which the error introduced by the phase shift can be removed or reduced by the method described in FIG. 5.

[0327] When the location management device locates the terminal device to be located using the TDOA positioning technology, it is understood that the location management device needs to locate the terminal device to be located based on the measurement results obtained by measuring the first SRS signal and the second SRS signal by at least three network devices (including the network device #1 described above). Refer to Figure 4. Assume that at least three network devices include BS1 (i.e., network device #1), BS2, and BS3. The measurement results obtained by BS2 by measuring the first SRS signal and the second SRS signal include RTOA#3 and RTOA#4. RTOA#3 is the relative arrival time when the first SRS signal reaches BS2, and RTOA#4 is the relative arrival time when the second SRS signal reaches BS2. The measurement results obtained by BS3 by measuring the first SRS signal and the second SRS signal include RTOA#5 and RTOA#6. RTOA#5 is the relative arrival time when the first SRS signal reaches BS3, and RTOA#6 is the relative arrival time when the second SRS signal reaches BS3.

[0328] RTOA#1 is

Number

Number

[0329] RTOA #2 may be expressed as

Number

Number

[0330] RTOA #3 may be expressed as

Number

Number

[0331] RTOA #4 may be expressed as

Number

Number

[0332] RTOA#5 is

Number

Number

[0333] RTOA#6 is

Number

Number

[0334] Furthermore, the location management device obtains TDOA#1 by subtracting RTOA#3 from RTOA#1. That is,

Number

[0335] The location management device obtains TDOA#3 by subtracting RTOA#1 from RTOA#5. That is, [Number] is. The location management device obtains TDOA#4 by subtracting RTOA#2 from RTOA#6. That is, [Number] is. Next, the location management device [Number] Obtain it. When the position of UE_r or the actual distance between UE_r and the network devices (including base station 1 and base station 3) is known, it is equivalent to

Number

Number

Number

[0336] Also, the location management device determines that the terminal device to be positioned is located at the intersection of hyperbola 1 and hyperbola 2.

[0337] When the first SRS resource and the second SRS resource completely overlap in the time domain, it should be understood that the phase shift existing in the phase measured by network device #1 on the first SRS resource in the time domain is the same as the phase shift existing in the phase measured by network device #1 on the second SRS resource in the time domain. Therefore, t2 is equal to t1. Similarly, t3 is equal to t4, and t5 is equal to t6. Based on this, in the above positioning procedure, the location management device subtracts TDOA#1 from TDOA#2,

Number

Number

[0338] When the first SRS resource and the second SRS resource partially overlap in the time domain, or when the first SRS resource and the second SRS resource are adjacent in the time domain and the number of time units by which the first SRS resource is away from the second SRS resource does not exceed a preset value, the phase shift existing in the phase measured by network device #1 on the first SRS resource in the time domain and the phase shift existing in the phase measured by network device #1 on the second SRS resource in the time domain are close. Therefore, the difference between t2 and t1 is extremely small. Similarly, the difference between t3 and t4 is extremely small, and the difference between t5 and t6 is also extremely small. Based on this, in the above positioning procedure, for the location management device, TDOA#2 is subtracted from TDOA#1, and TDOA#4 is subtracted from TDOA#3. Thus, compared with the case where the interval between the first SRS resource and the second SRS resource in the time domain is extremely large, although the error introduced by the phase shift existing in the phase measured by the network device cannot be completely removed, it may be reduced to some extent.

[0339] In the present embodiment of the present application, the terminal device to be positioned transmits a first SRS signal on a first SRS resource, and the first reference terminal device transmits a second SRS signal on a second SRS resource. Since there is at least one overlapping time domain unit between the first SRS resource and the second SRS resource, when the terminal device to be positioned is positioned by measuring the first SRS signal and the second SRS signal, the phase shift present in the phase measured by the same network device on the first SRS resource in the time domain and the phase shift present in the phase measured by the same network device on the second SRS resource in the time domain are the same or similar. This helps to remove or reduce the error introduced by the phase shift and improve the positioning accuracy.

[0340] Before the terminal device to be positioned transmits a second SRS signal on the second SRS resource, it is understood that the serving network device of the terminal device to be positioned (hereinafter referred to as serving network device #1) sets the second SRS resource for the terminal device to be positioned, and before the first reference terminal device transmits a first SRS signal on the first SRS resource, the serving network device of the first reference terminal device (hereinafter referred to as serving network device #2) sets the first SRS resource for the first reference terminal device. Next, with reference to FIGS. 9 and 10, a method for setting SRS resources for the terminal device to be positioned and the first reference terminal device will be described.

[0341] FIG. 9 is a schematic flowchart of a resource setting method according to an embodiment of the present application. In the method shown in FIG. 9, before the terminal device to be measured transmits a second SRS signal, serving network device #1 sets the second SRS resource for the terminal device to be measured in a manner predefined by the protocol or based on an instruction from a location management device. Hereinafter, the steps included in method 900 will be described in detail.

[0342] Note that the method of setting SRS resources for the target positioning terminal device and the first reference terminal device is different in two cases: one is when the serving network device #1 and the serving network device #2 are the same network device, and the other is when the serving network device #1 and the serving network device #2 are different network devices. Hereinafter, the methods for setting SRS resources for the target positioning terminal device and the first reference terminal device in the above two cases will be separately described.

[0343] Case 1: When the serving network device #1 and the serving network device #2 are different network devices, the method for setting SRS resources for the target positioning terminal device and the first reference terminal device includes the following steps.

[0344] S910: The serving network device #1 receives the first reference SRS resource information from the location management device. Correspondingly, the location management device transmits the first reference SRS resource information to the serving network device #1.

[0345] For example, the first reference SRS resource information includes one or more of the start symbol position, the number of occupied symbols, the transmission periodicity and offset, the transmission comb and offset, the cyclic shift, the frequency domain position and offset, or the frequency hopping setting.

[0346] For example, the first reference SRS resource information includes at least the start symbol position, the number of occupied symbols, the transmission periodicity, and the offset.

[0347] For example, the first reference SRS resource information includes the ID of the first SRS resource.

[0348] In the embodiments of the present application, the method by which the location management device obtains the first reference SRS resource information is not limited.

[0349] In a possible implementation, the first reference SRS resource information is received by the location management device from the serving network device #2.

[0350] The first reference SRS resource information transmitted to the location management device by the serving network device #2 is information about the first SRS resource. In other words, the first reference SRS resource information is related to the first SRS resource. The first SRS resource is the SRS resource configured by the serving network device #2 for the first reference terminal device. For the description of the information about the first SRS resource, refer to S510 in the above method 500.

[0351] In another possible implementation, the first reference SRS resource information is determined by the location management device based on the SRS resources of at least one reference terminal device. In other words, the first reference SRS resource information is related to the SRS resources of at least one reference terminal device.

[0352] In one example, the first reference SRS resource information is related to the SRS resource of the first reference terminal device. For example, the first reference SRS resource information is information about the SRS resource of the first reference terminal device (i.e., the first SRS resource), or the first reference SRS resource information is information obtained based on the first SRS resource.

[0353] The first reference terminal device is the reference terminal device closest to the terminal device to be located and / or the reference terminal device with the best signal quality. The location of the reference terminal device is known, or the actual distance between the reference terminal device and the network devices (including the serving network device #1 and the serving network device #2) is known.

[0354] The information obtained based on the first SRS resource may be information about the SRS resource including the first SRS resource, or may be information about the SRS resource having at least one overlapping time domain unit with the first SRS resource.

[0355] In another example, the first reference SRS resource information is related to the SRS resources of at least two reference terminal devices. For example, the first reference SRS resource information is information about the SRS resources of at least two reference terminal devices, or the first reference SRS resource information is information obtained based on the SRS resources of at least two reference terminal devices.

[0356] The at least two reference terminal devices include the first reference terminal device. The at least two reference terminal devices may include a reference terminal device whose distance from the terminal device to be positioned is less than a first threshold value, and / or a reference terminal device whose signal quality is higher than a second threshold value. The first threshold value and / or the second threshold value may be preset or predefined in the protocol. This is not limited in the embodiments of the present application.

[0357] The information about the SRS resources of the at least two reference terminal devices includes information about the SRS resources of each of the at least two reference terminal devices.

[0358] The information obtained based on the information about the SRS resources of the at least two reference terminal devices may be information about the SRS resource including the SRS resources of the at least two reference terminal devices, or may be information about the SRS resource having at least one overlapping time domain unit with the SRS resources of the at least two reference terminal devices.

[0359] Optionally, the serving network device #1 receiving the first reference SRS resource information from the location management device includes the serving network device #1 receiving a plurality of reference SRS resource information and priority information of the plurality of reference SRS resource information from the location management device. The priority information indicates the priority of each of the plurality of reference SRS resource information, and the plurality of reference SRS resource information includes the first reference SRS resource information.

[0360] Optionally, the serving network device #1 further receives identifiers of a plurality of reference terminal devices, and the identifiers of the plurality of reference terminal devices have a one-to-one correspondence with the plurality of reference SRS resource information.

[0361] Optionally, the location management device transmitting the first reference SRS resource information to the serving network device #1 includes the location management device transmitting a positioning information request message to the serving network device #1, and the positioning information request message includes the first reference SRS resource information. For example, the location management device transmits a positioning information request message to the network device #1 via the NRPPa protocol, in other words, the location management device transmits an NRPPa positioning information request message to the network device #1.

[0362] S920: The serving network device #1 transmits resource configuration information of the second SRS resource to the terminal device to be positioned.

[0363] The resource configuration information of the second SRS resource indicates the second SRS resource, and the resource configuration information of the second SRS includes one or more of a start symbol position, a number of occupied symbols, a transmission periodicity and an offset, a transmission comb and an offset, a cyclic shift, a frequency domain position and an offset, or a frequency hopping setting.

[0364] After receiving the first reference SRS resource information, the serving network device #1 sets a second SRS resource for the terminal device to be positioned based on the first reference SRS resource information. For example, after receiving the first reference SRS resource information, the serving network device #1 determines the time domain position of the first SRS resource based on the first reference SRS resource information, and then determines a second SRS resource having at least one overlapping time domain unit with the first SRS resource for the terminal device to be positioned. For example, the time domain unit is a symbol.

[0365] For example, when the first reference SRS resource information includes the start symbol position, the serving network device #1 may be helpful in implementing a case where a second SRS resource occupying the start symbol is set for the terminal device to be positioned based on the first reference SRS resource information, and there is at least one overlapping time domain unit between the first SRS resource and the second SRS resource. For example, when the start symbol position included in the first reference SRS resource information is the start symbol position of the first SRS resource, the first SRS resource and the second SRS resource overlap at the start symbol position.

[0366] In another example, when the first reference SRS resource information includes the start symbol position and the number of occupied symbols, the serving network device #1 may determine the time domain position of one SRS resource based on the first reference SRS resource information. Further, the serving network device #1 may determine a second SRS resource having at least one overlapping time domain unit with the SRS resource for the positioning target terminal device, which may be useful for implementing a case where at least one overlapping time domain unit exists between the first SRS resource and the second SRS resource. For example, if the SRS resource determined based on the first reference SRS resource information includes the first SRS resource, and the second SRS resource set for the positioning target terminal device by the serving network device #2 completely overlaps with the SRS resource determined based on the first reference SRS resource information, then at least one overlapping symbol exists between the first SRS resource and the second SRS resource.

[0367] In yet another example, when the first reference SRS resource information includes the frequency domain position and the offset, the serving network device #1 may determine the time domain position of the SRS resource corresponding to the frequency domain position and the offset based on the first reference SRS resource information. Further, the serving network device #1 may determine a second SRS resource having at least one overlapping time domain unit with the SRS resource for the positioning target terminal device, which may be useful for implementing a case where at least one overlapping time domain unit exists between the first SRS resource and the second SRS resource.

[0368] Optionally, in S910, when the serving network device #1 receives a plurality of reference SRS resource information, the serving network device #1 selects the first reference SRS resource information from the plurality of reference SRS resource information, and then sets the second SRS resource for the terminal device to be positioned based on the first reference SRS resource information. For example, among the plurality of reference SRS resource information, the priority of the first reference SRS resource information is the highest. In another example, among at least one of the target reference SRS resource information, the priority of the first reference SRS resource information is the highest. At least one of the target reference SRS resource information belongs to the plurality of reference SRS resource information. Additionally, there is at least one overlapping time domain unit between the SRS resource indicated by each of the at least one target reference SRS resource information and the SRS resource that can be assigned to the terminal device to be positioned. For example, among the plurality of reference SRS resource information, the SRS resource #A indicated by the reference SRS resource information #A occupies symbols 11 and 12, and among the plurality of reference SRS resource information, the SRS resource #B indicated by the reference SRS resource information #B occupies symbols 13 and 14. The SRS resource that can be assigned to the terminal device to be positioned occupies symbols 11 and 14. In other words, there is one overlapping symbol in the time domain between each of the SRS resource #A and the SRS resource #B and the SRS resource that can be assigned to the terminal device to be positioned. Further, when the priority of the reference SRS resource information #A is higher than the priority of the reference SRS resource information #B, the serving network device #1 determines the reference SRS resource information #A as the first reference SRS resource information.

[0369] For example, the serving network device #1 may be determined to configure, for the terminal device to be positioned, a first SRS resource and a second SRS resource having at least one overlapping time domain unit in a pre-defined manner in the protocol. The pre-defined manner includes determining, for the terminal device to be positioned, a first SRS resource and a second SRS resource having at least one overlapping time domain unit. For example, the pre-defined manner includes determining, for the terminal device to be positioned, a second SRS resource that is not offset by a time domain unit from the first SRS resource. Alternatively, the pre-defined manner includes determining, for the terminal device to be positioned, a second SRS resource that is offset by one time domain unit from the first SRS resource. Alternatively, the pre-defined manner includes determining, for the terminal device to be positioned, a second SRS resource that is adjacent to the first SRS resource in the time domain and is separated from the first SRS resource by a number of time domain units not exceeding a pre-set value.

[0370] In yet another example, the serving network device #1 may be determined to configure, for the terminal device to be positioned, a second SRS resource having at least one overlapping time domain unit with the first SRS resource based on an instruction from the location management device. In other words, before S920, method 900 further includes S921 and / or S922.

[0371] S921: The serving network device #1 receives first instruction information from the location management device. Correspondingly, the location management device transmits the first instruction information to the serving network device #1.

[0372] For example, the first indication information indicates setting, for a terminal device to be positioned, a second SRS resource that completely overlaps with the first SRS resource in the time domain, or indicates setting, for the terminal device to be positioned, a second SRS resource that partially overlaps with the first SRS resource in the time domain. In another example, the first indication information indicates setting, for the terminal device to be positioned, a second SRS resource that is not offset from the first SRS resource by a time domain unit, or indicates setting, for the terminal device to be positioned, a second SRS resource that is offset from the first SRS resource by a time domain unit.

[0373] For example, when the first indication information indicates setting, for a terminal device to be positioned, a second SRS resource that completely overlaps with the first SRS resource in the time domain, it is equivalent to the first indication information indicating setting, for the terminal device to be positioned, the time domain resource indicated by the first reference SRS resource information.

[0374] For example, the first indication information may be named "recommended setting label".

[0375] For example, the first indication information is 1-bit information. For example, when the value of the first indication information is "1", the first indication information indicates setting, for the terminal device to be positioned, a second SRS resource that completely overlaps with the first SRS resource in the time domain. For example, when the value of the first indication information is "0", the first indication information indicates setting, for the terminal device to be positioned, a second SRS resource that partially overlaps with the first SRS resource in the time domain. In another example, when the value of the first indication information is "1", the first indication information indicates setting, for the terminal device to be positioned, a second SRS resource that completely overlaps with the first SRS resource in the time domain. When the value of the first indication information is "0", the first indication information indicates setting, for the terminal device to be positioned, a second SRS resource that partially overlaps with the first SRS resource in the time domain.

[0376] For example, the second indication information is 2-bit information. For example, when the value of the first indication information is "00", the first indication information indicates to set, for the terminal device to be positioned, a second SRS resource that completely overlaps with the first SRS resource in the time domain. For example, when the value of the first indication information is "10", the first indication information indicates to set, for the terminal device to be positioned, a second SRS resource that partially overlaps with the first SRS resource in the time domain. When the value of the first indication information is "01", the first indication information indicates to set, for the terminal device to be positioned, a second SRS resource adjacent to the first SRS resource in the time domain.

[0377] Optionally, the first indication information may indicate to set, for the terminal device to be positioned, a second SRS resource that completely overlaps with the first SRS resource, or the first indication information may indicate to set, for the terminal device to be positioned, a second SRS resource adjacent to the first SRS resource. For example, when the value of the first indication information is "1", the first indication information indicates to set, for the terminal device to be positioned, a second SRS resource that completely overlaps with the first SRS resource. When the value of the first indication information is "0", the first indication information indicates to set, for the terminal device to be positioned, a second SRS resource adjacent to the first SRS resource. That the second SRS resource completely overlaps with the first SRS resource means that the second SRS resource completely overlaps with the first SRS resource in the time domain and the frequency domain. That the second SRS resource is adjacent to the first SRS resource means that the second SRS resource is adjacent to the first SRS resource in the time domain and / or the second SRS resource is adjacent to the first SRS resource in the frequency domain.

[0378] It should be noted that the first reference SRS resource information # and the first indication information transmitted by the location management device to the serving network device #1 may be carried in the same message. For example, the NRPPa positioning information request message transmitted by the location management device to the serving network device #1 includes the first reference SRS resource information and the first indication information. Alternatively, the first reference SRS resource information # and the first indication information transmitted by the location management device to the serving network device #1 may be carried in different messages.

[0379] S922: The location management device transmits the second indication information to the serving network device #1. Correspondingly, the location management device transmits the second indication information to the serving network device #1.

[0380] The second indication information indicates one or more of an offset allowed to separate the first SRS resource from the second SRS resource in the frequency domain, a time domain unit, and a maximum frequency domain interval. An offset for the time domain unit is allowed between the first SRS resource and the second SRS resource. For example, the frequency domain interval represents the number of frequency domain units. In other words, the second indication information further indicates the maximum number of frequency domain units allowed to separate the first SRS resource from the second SRS resource in the frequency domain. The frequency domain unit is a subcarrier, a resource block (RB), etc.

[0381] For example, the second indication information may be named "offset indication".

[0382] For example, the value of the second indication information is equal to the offset. For example, the value of the second indication information is "0", which indicates that the offset is 0. In this case, the second indication information may indicate setting, for the terminal device to be positioned, a second SRS resource that completely overlaps with the first SRS resource in the time domain, or setting, for the terminal device to be positioned, the time domain resource indicated by the first reference SRS resource information. For example, the value of the second indication information is "1", which indicates that the offset is 1. In this case, the second indication information may indicate setting, for the terminal device to be positioned, a second SRS resource that is offset from the first SRS resource by one time domain unit in the time domain, or setting, for the terminal device to be positioned, a second SRS resource that is offset from the first SRS resource by a maximum of one time domain unit.

[0383] For example, the value of the second indication information is equal to the maximum number of frequency domain units allowed to separate the first SRS resource from the second SRS resource in the frequency domain. In other words, the second indication information indicates the maximum number of frequency domain units allowed to separate the first SRS resource from the second SRS resource in the frequency domain.

[0384] For example, the second indication information includes two values. The first value indicates the offset, and the second value indicates the maximum number of frequency domain units allowed to separate the first SRS resource from the second SRS resource in the frequency domain.

[0385] The first reference SRS resource information # and the second indication information transmitted by the location management device to the serving network device #1 may be carried in the same message. For example, the NRPPa positioning information request message transmitted by the location management device to the serving network device #1 includes the first reference SRS resource information and the second indication information. Alternatively, the first reference SRS resource information # and the second indication information transmitted by the location management device to the serving network device #1 may be carried in different messages.

[0386] When the serving network device #1 receives the first indication information, it should be further noted that the serving network device #1 sets the second SRS resource for the terminal device to be positioned based on the first indication information. When the serving network device #1 receives the second indication information, the serving network device #1 sets the second SRS resource for the terminal device to be positioned based on the second indication information. When the serving network device #1 receives the first indication information and the second indication information, the serving network device #1 may set the second SRS resource for the terminal device to be positioned based on the first indication information, or set the second SRS resource for the terminal device to be positioned based on the second indication information, or set the second SRS resource for the terminal device to be positioned based on the first indication information and the second indication information. For example, when the first indication information indicates setting a second SRS resource that partially overlaps with the first SRS resource for the terminal device to be positioned, and the second indication information indicates that the time domain unit is a symbol and the offset is 1, the serving network device #1 sets, based on the first indication information and the second indication information, a second SRS resource with a maximum offset of 1 symbol from the first SRS resource for the terminal device to be positioned. In another example, when the first indication information indicates setting a second SRS resource adjacent to the first SRS resource for the terminal device to be positioned, and the second indication information indicates that the maximum number of frequency domain units allowing the first SRS resource to be separated from the second SRS resource in the frequency domain is 1, the serving network device #1 sets, based on the first indication information and the second indication information, a second SRS resource that completely overlaps with the first SRS resource in the time domain, is adjacent to the first SRS resource in the frequency domain, and is separated from the first SRS resource by no more than 1 number of frequency domain units for the terminal device to be positioned.

[0387] Optionally, method 900 further includes the serving network device #1 receiving third indication information from the location management device, where the third indication information indicates that the first SRS resource is a reference resource. Correspondingly, the serving network device #1 uses the first SRS resource as a reference resource based on the third indication information, and sets, for the terminal device to be positioned, a second SRS resource having at least one time domain unit overlapping with the first SRS resource. The reference resource is an SRS resource for a reference terminal device.

[0388] Optionally, the serving network device #1 receiving first reference SRS resource information from the location management device includes the serving network device #1 receiving reference resource information from the location management device, where the reference resource information includes the first reference SRS resource information. Correspondingly, the serving network device #1 uses the first SRS resource as a reference resource based on the reference resource information, and sets, for the terminal device to be positioned, a second SRS resource having at least one time domain unit overlapping with the first SRS resource.

[0389] Optionally, method 900 further includes S923.

[0390] S923: The serving network device #1 transmits information about the second SRS resource to the location management device. Correspondingly, the location management device receives the information about the second SRS resource from the serving network device #1.

[0391] For further details of the information about the second SRS resource, refer to S510 of method 500 described above.

[0392] When the location management device transmits multiple reference SRS resource information to the serving network device #1 after receiving information about the second SRS resource, the location management device may determine the first reference SRS resource information from the multiple reference SRS resource information based on the information of the second SRS resource. For example, among at least one target reference SRS resource information, it may be determined that the first reference SRS resource information has the highest priority. Further, the location management device may determine that the first reference terminal device corresponding to the first reference SRS resource information participates in the positioning of the terminal device to be positioned.

[0393] Optionally, when the location management device transmits the identifiers of multiple reference terminal devices corresponding to the multiple reference SRS resource information to the serving network device #1, in S923, the serving network device #1 may transmit the identifier of the first reference terminal device corresponding to the first reference SRS resource information to the location management device.

[0394] Optionally, in S910, when the location management device transmits the first reference SRS resource information to the serving network device #1 in the positioning information request message, method 900 includes the serving network device #1 transmitting a positioning information response message to the location management device. For example, the serving network device #1 transmits a positioning information response message to the location management device via the NRPPa protocol. In other words, the serving network device #1 transmits an NRPPa positioning information response message to the location management device. Optionally, the positioning information response message includes information about the second SRS resource.

[0395] S930: The serving network device #2 transmits the resource configuration information of the first SRS resource to the first reference terminal device. Correspondingly, the first reference terminal device receives the resource configuration information of the first SRS resource from the serving network device #2.

[0396] The resource configuration information of the first SRS resource indicates the first SRS resource, and the resource configuration information of the first SRS includes one or more of the start symbol position, the number of occupied symbols, the transmission periodicity and offset, the transmission comb and offset, the cyclic shift, the frequency domain position and offset, or the frequency hopping setting.

[0397] Case 1: When the serving network device #1 and the serving network device #2 are the same network device, the method for setting the SRS resource for the positioning target terminal device and the first reference terminal device includes the following steps.

[0398] S920: The serving network device #1 transmits the resource configuration information of the second SRS resource to the positioning target terminal device.

[0399] The resource configuration information of the second SRS resource indicates the second SRS resource.

[0400] S930: The serving network device #2 transmits the resource configuration information of the first SRS resource to the first reference terminal device.

[0401] The resource configuration information of the first SRS resource indicates the first SRS resource. The serving network device #2 and the serving network device #1 are the same network device.

[0402] For example, the serving network device #1 may set the second SRS resource for the positioning target terminal device and set the first SRS resource for the first reference terminal device in a manner predefined in the protocol, and there is at least one overlapping time domain unit between the first SRS resource and the second SRS resource. For the description of the predefined manner, refer to the above description.

[0403] In another example, the serving network device #1 may set a second SRS resource for the terminal device to be positioned and set a first SRS resource for the first reference terminal device based on the instruction of the location management device. In other words, before S920 and S930, method 900 may further include S921 and / or S922.

[0404] S921: The serving network device #1 receives first instruction information from the location management device. Correspondingly, the location management device transmits the first instruction information to the serving network device #1.

[0405] For further description of S921, refer to the above description.

[0406] After receiving the first instruction information, the serving network device #1 sets SRS resources for the terminal device to be positioned and the first reference terminal device based on the first instruction information. For example, when the first instruction information indicates setting, for the terminal device to be positioned, a second SRS resource that overlaps with the first SRS resource in the time domain, the second SRS resource set by the serving network device #1 for the terminal device to be positioned overlaps with the first SRS resource set for the first reference terminal device in the time domain.

[0407] S922: The serving network device #1 receives second instruction information from the location management device. Correspondingly, the location management device transmits the second instruction information to the serving network device #1.

[0408] For further description of S922, refer to the above description.

[0409] After receiving the second instruction information, the serving network device #1 configures SRS resources for the terminal device to be positioned and the first reference terminal device based on the second instruction information. For example, when the offset indicated by the second instruction information is 0, there is no offset in time domain units between the second SRS resource configured by the serving network device #1 for the terminal device to be positioned and the first SRS resource configured for the first reference terminal device.

[0410] After the serving network device #1 configures the second SRS resource for the terminal device to be positioned and the serving network device #2 configures the first SRS resource for the first reference terminal device, the terminal device to be positioned may transmit a second SRS signal on the second SRS resource, and the first reference terminal device may transmit a first SRS signal on the first SRS resource. Further, the network device may position the terminal device to be positioned by measuring the first SRS signal and the second SRS signal. For the method for the network device to position the terminal device to be positioned, refer to the above method 500.

[0411] In this embodiment of the present application, the serving network device of the terminal device to be positioned may set, for the terminal device to be positioned, a first SRS resource and a second SRS resource having at least one overlapping time domain unit based on a pre-defined protocol or an instruction from a location management device. Further, by measuring a first SRS signal transmitted by a first reference terminal device on the first SRS resource and a second SRS signal transmitted by the terminal device to be positioned on the second SRS resource, when the terminal device to be positioned is positioned, the phase shift present in the phase measured by the same network device on the first SRS resource in the time domain and the phase shift present in the phase measured by the network device on the second SRS resource in the time domain are the same or similar. This helps to remove or reduce the error introduced by the phase shift and improves the positioning accuracy.

[0412] FIG. 10 is a schematic flowchart of a resource setting method according to another embodiment of the present application. In the method shown in FIG. 10, the serving network device #1 transmits information about the second SRS resource to the location management device, and then the location management device transmits the information about the second SRS resource to the serving network device #2, and the serving network device #2 can set the first SRS resource for the first reference terminal device based on the information about the second SRS resource. Hereinafter, the steps included in the method 1000 will be described in detail.

[0413] S1010: The serving network device #1 transmits resource setting information of the second SRS resource to the terminal device to be positioned. Correspondingly, the terminal device to be positioned receives the resource setting information of the second SRS resource from the serving network device #1.

[0414] For the description of the resource setting information of the first SRS resource, refer to S930 in the above method 900.

[0415] Optionally, when the serving network device #1 receives a positioning information request message from the location management device, the serving network device #1 sets a second SRS resource for the terminal device to be positioned, that is, transmits resource setting information of the second SRS resource to the terminal device to be positioned.

[0416] S1020: The serving network device #1 transmits information about the second SRS resource to the location management device. Correspondingly, the location management device receives information about the second SRS resource from the serving network device #1.

[0417] For the description of the resource setting information of the second SRS resource, refer to S510 in the above method 500.

[0418] Optionally, the serving network device #1 transmitting information about the second SRS resource to the location management device includes the serving network device #1 transmitting a positioning information response message to the location management device, and the positioning information response message includes information about the second SRS resource.

[0419] S1030: The location management device transmits information about the second SRS resource to the serving network device #2. Correspondingly, the serving network device #2 receives information about the second SRS resource from the location management device.

[0420] S1040: The serving network device #2 transmits the resource setting information of the first SRS resource to the first reference terminal device. Correspondingly, the first reference terminal device receives the resource setting information of the first SRS resource from the serving network device #2.

[0421] For the description of the resource configuration information of the first SRS resource, refer to S940 in the above method 900.

[0422] After receiving the information about the second SRS resource, the serving network device #2 configures the second SRS resource for the first reference terminal device based on the information about the second SRS resource. Specifically, the serving network device #2 determines the time domain position of the second SRS resource based on the information about the second SRS resource, and configures the first SRS resource that overlaps with the second SRS resource by at least one time domain unit for the first reference terminal device.

[0423] In method 900, similar to the manner in which the serving network device #1 configures the second SRS resource for the terminal device to be positioned based on the first reference SRS resource information, after receiving the information about the second SRS resource, the serving network device #2 may configure the first SRS resource that has at least one overlapping time domain unit with the second SRS resource for the first reference terminal device in a manner predefined in the protocol or based on the instruction of the location management device. For further description of the serving network device #2 configuring the first SRS resource for the first reference terminal device, refer to the description of the serving network device #1 configuring the second SRS resource for the terminal device to be positioned in method 900.

[0424] Serving network device #1 sets a second SRS resource for the terminal device to be positioned. After serving network device #2 sets a first SRS resource for the first reference terminal device, the terminal device to be positioned may transmit a second SRS signal on the second SRS resource, and the first reference terminal device may transmit a first SRS signal on the first SRS resource. Further, the network device may position the terminal device to be positioned by measuring the first SRS signal and the second SRS signal. For the method for positioning the terminal device to be positioned by the network device, refer to method 500 described above.

[0425] In the present embodiment of the present application, the serving network device of the first reference terminal device may set, for the first reference terminal device, a first SRS resource having at least one overlapping time domain unit with the second SRS resource based on protocol pre - definition or an instruction of a location management device and information # about the second SRS resource. Further, when the terminal device to be positioned is positioned by measuring the first SRS signal transmitted by the first reference terminal device on the first SRS resource and the second SRS signal transmitted by the terminal device to be positioned on the second SRS resource, the phase shift present in the phase measured by the same network device on the first SRS resource in the time domain and the phase shift present in the phase measured by the same network device on the second SRS resource in the time domain are the same or similar. This helps to remove or reduce the error introduced by the phase shift and improve the positioning accuracy.

[0426] The method provided in the embodiments of the present application is described in detail above with reference to FIGS. 3 to 10. Hereinafter, with reference to FIGS. 11 to 13, the apparatus provided in the embodiments of the present application will be described in detail. It should be understood that the description of the embodiments of the apparatus corresponds to the description of the embodiments of the method. Therefore, for the content that has not been described in detail, refer to the embodiments of the method. For the sake of simplicity, the details will not be described again here.

[0427] FIG. 11 is a block diagram of an apparatus 2000 according to an embodiment of the present application. As shown in the figure, the apparatus 2000 may include a transceiver unit 2010 and a processing unit 2020.

[0428] In a possible design, the apparatus 2000 may be a location management device in the embodiments of the above-described method, or may be a chip configured to implement the functions of the location management device in the embodiments of the above-described method.

[0429] It should be understood that the apparatus 2000 may correspond to the location management device in the method 300, method 500, method 900, or method 1000 in the embodiments of the present application, or the apparatus 2000 may include a method unit configured to execute the location management device in the method 300 of FIG. 3, the method 500 of FIG. 5, the method 900 of FIG. 9, or the method 1000 of FIG. 10. Additionally, in order to implement the corresponding procedures of the method 300 of FIG. 3, the method 500 of FIG. 5, the method 900 of FIG. 9, or the method 1000 of FIG. 10, the units within the apparatus 2000, and the other operations and / or functions described above are each used. The specific process by which the unit executes the corresponding steps described above is described in detail in the embodiments of the above-described method. For the sake of simplicity, the details will not be described here.

[0430] In another possible design, the apparatus 2000 may be a network device in the embodiments of the above-described method, or may be a chip configured to implement the functions of the network device in the embodiments of the above-described method.

[0431] It should be understood that the device 2000 may correspond to the network device #1 in the method 500 in the embodiments of the present application, or may correspond to the serving network device #1 or the serving network device #2 in the method 900 or the method 1000 in the embodiments of the present application. The device 2000 may include a unit configured to execute the method executed by the network device #1 in the method 500 of FIG. 5, or may include a unit configured to execute the method executed by the serving network device #1 or the serving network device #2 in the method 900 of FIG. 9 or the method 1000 of FIG. 10. Additionally, units within the device 2000, and the other operations and / or functions described above are each used to implement the corresponding procedures of the method 1800 of FIG. 500, the method 1900 of FIG. 5, the method 900 of FIG. 9, or the method 1000 of FIG. 10. It should be understood that the specific processes by which the units execute the corresponding steps described above are described in detail in the embodiments of the methods described above. For the sake of brevity, the details are not described here.

[0432] Furthermore, it should be understood that the transceiver unit 2010 within the device 2000 may correspond to the transceiver 3020 within the device 3000 shown in FIG. 12, and the processing unit 2020 within the device 2000 may correspond to the processor 3010 within the device 3000 shown in FIG. 12.

[0433] Furthermore, when the device 2000 is a chip, it should be understood that the chip includes a transceiver unit and a processing unit. The transceiver unit may be an input / output circuit or a communication interface. The processing unit may be a processor, a microprocessor, or an integrated circuit integrated on the chip.

[0434] The transceiver unit 2010 is configured to implement the signal receiving and transmitting operations of the device 2000, and the processing unit 2020 is configured to implement the signal processing operations of the device 2000.

[0435] Optionally, device 2000 further includes a memory unit 2030, which is configured to store instructions.

[0436] FIG. 12 is a block diagram of a device 3000 according to an embodiment of the present application. As shown in FIG. 12, device 3000 includes at least one processor 3010. Processor 3010 is coupled to a memory and is configured to execute instructions stored in the memory to perform the method of FIGS. 3, 5, 9, or 10. Optionally, device 3000 further includes a transceiver 3020. Processor 3010 is coupled to a memory and is configured to execute instructions stored in the memory to control transceiver 3020 to transmit and / or receive signals. For example, processor 3010 may control transceiver 3020 to transmit and / or receive first reference SRS resource information. Optionally, device 3000 further includes a memory 3030 configured to store instructions.

[0437] It should be understood that processor 3010 and memory 3030 may be integrated into one processing device. Processor 3010 is configured to execute program code stored in memory 3030 to implement the functions described above. In a particular implementation, memory 3030 may alternatively be integrated with processor 3010 or may be independent of processor 3010.

[0438] Furthermore, it should be understood that transceiver 3020 may include a receiver (also referred to as a receiver machine) and a transmitter (also referred to as a transmitter machine). Transceiver 3020 may further include an antenna, and there may be one or more antennas. Alternatively, transceiver 3020 may be a communication interface or an interface circuit.

[0439] When the device 3000 is a chip, the chip includes a transceiver unit and a processing unit. The transceiver unit may be an input / output circuit or a communication interface. The processing unit may be a processor, a microprocessor, or an integrated circuit integrated on the chip.

[0440] FIG. 13 is a diagram of a chip system according to an embodiment of the present application. The chip system in this specification may also be a system including circuits. The chip system 4000 shown in FIG. 13 includes a logic circuit 4010 and an input / output interface 4020. The logic circuit is coupled to the input interface and is configured to execute the transmission of data (for example, the first information) through the input / output interface to execute the methods of FIGS. 3, 5, 9, or 10.

[0441] An embodiment of the present application further provides a processing device including a processor and an interface. The processor is configured to execute the methods in the above embodiments.

[0442] It should be understood that the processing device may be a chip. For example, the processing device may be a field programmable gate array (FPGA), an application-specific integrated circuit (ASIC), a system-on-chip (SoC), a central processing unit (CPU), a network processor (NP), a digital signal processor (DSP), a microcontroller unit (MCU), a programmable logic device (PLD), or another integrated chip.

[0443] In the implementation process, the steps of the above-described method may be implemented through the hardware integrated logic circuit in the processor or by using instructions in the form of software. The steps of the method disclosed with reference to the embodiments of the present application may be directly executed by the hardware processor, or may be executed by using a combination of the hardware and software modules in the processor. The software module may be located in a mature storage medium in the technical field, such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory, an electrically erasable programmable memory, a register, etc. The storage medium is located in the memory, and the processor reads the information in the memory and combines it with the hardware to complete the steps of the above-described method in the processor. To avoid repetition, details are not described again here.

[0444] It should be noted that the processor in the embodiments of the present application may be an integrated circuit chip and has signal processing capabilities. In the implementation process, the steps in the above-described method may be implemented through the hardware integrated logic circuit in the processor or by using instructions in the form of software. The processor may be a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA) or another programmable logic device, an individual gate or transistor logic device, or an individual hardware component. The processor may implement or execute the method, steps, and logic block diagrams disclosed in the embodiments of the present application. The general-purpose processor may be a microprocessor, or the processor may be any conventional processor, etc.

[0445] It should be understood that the memory in the present embodiment of the present application may be a volatile memory or a non-volatile memory, or may include a volatile memory and a non-volatile memory. The non-volatile memory may be a read-only memory (ROM), a programmable ROM (PROM), an erasable PROM (EPROM), an electrically erasable PROM (EEPROM), or a flash memory. The volatile memory may be a random access memory (RAM) used as an external cache.

[0446] According to the method provided in the embodiment of the present application, the present application further provides a computer program product. The computer program product includes computer program code. When the computer program code is executed on a computer, the computer can execute the method in the embodiment shown in FIG. 3, FIG. 5, FIG. 9 or FIG. 10.

[0447] According to the method provided in the embodiment of the present application, the present application further provides a computer-readable medium. The computer-readable medium stores program code. When the program code is executed on a computer, the computer can execute the method in the embodiment shown in FIG. 3, FIG. 5, FIG. 9 or FIG. 10.

[0448] According to the method provided in the embodiment of the present application, the present application further provides a system. The system includes the above-mentioned network device, location management device, and terminal device.

[0449] All or part of the above embodiments may be implemented using software, hardware, firmware, or any combination thereof. When software is used to implement an embodiment, all or some of the embodiments may be implemented in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer instructions are loaded and executed on a computer, the procedures or functions according to the embodiments of the present application are all or partially generated. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium. The computer-readable storage medium may be any available medium accessible by a computer or a data storage device integrating one or more available media, such as a server or a data center. The available medium may be a magnetic medium (such as a floppy disk, a hard disk, or a magnetic tape), an optical medium (such as a digital video disc (DVD)), a semiconductor medium (such as a solid-state disk (SSD)), etc.

[0450] In the multiple embodiments provided in the present application, it should be understood that the disclosed systems, devices, and methods may be implemented in other ways. For example, the described device embodiments are merely examples. For example, the division into units is only a logical function division, and in actual implementation, other divisions may be possible. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Additionally, the disclosed couplings, direct couplings, or communication connections may be implemented through some interfaces. The indirect coupling or communication connection between devices or units may be implemented in an electronic, mechanical, or other form.

[0451] The above description is merely a specific implementation of the present application and is not intended to limit the protection scope of the present application. Within the technical scope disclosed in the present application, modifications or substitutions that can be easily understood by those skilled in the art shall be included in the protection scope of the present application. Therefore, the protection scope of the present application shall comply with the protection scope of the claims.

Claims

Claim 1 A resource setting method, comprising: receiving, by a network device, first reference sounding reference signal (SRS) resource information from a location management device; and setting, by the network device, a second SRS resource for a terminal device to be positioned based on the first reference SRS resource information. Claim 2 The method according to claim 1, wherein there is at least one overlapping time domain unit between the second SRS resource and the first SRS resource, and the first reference SRS resource information is related to the first SRS resource. Claim 3 The method according to claim 1 or 2, wherein the first reference SRS resource information includes one or more of a start symbol position, a number of occupied symbols, a transmission periodicity and an offset, a transmission comb and an offset, a cyclic shift, a frequency domain position and an offset, or a frequency hopping setting. Claim 4 The method according to claim 3, wherein the first reference SRS resource information includes at least the start symbol position, the number of occupied symbols, the transmission periodicity, and the offset. Claim 5 The method according to claim 1 or 2, wherein the first reference SRS resource information includes identification information of the first SRS resource. Claim 6 The method according to any one of claims 1 to 5, wherein the first reference SRS resource information is related to the SRS resources of at least one reference terminal device. Claim 7 The method according to claim 6, wherein the first reference SRS resource information is related to the SRS resource of a first reference terminal device, and the first reference SRS resource information is information about the SRS resource of the first reference terminal device or the first reference SRS resource information is information obtained based on the SRS resource of the first reference terminal device. Claim 8 The method according to claim 6, wherein the first reference SRS resource information is related to the SRS resources of at least two reference terminal devices, and the first reference SRS resource information is information about the SRS resources of the at least two reference terminal devices or the first reference SRS resource information is information obtained based on the SRS resources of the at least two reference terminal devices. Claim 9 Receiving, by the network device, first reference SRS resource information from the location management device is Receiving, by the network device, a plurality of reference SRS resource information and priority information for each of the plurality of reference SRS resource information from the location management device, the plurality of reference SRS resource information including the first reference SRS resource information, The method is The method according to any one of claims 1 to 8, further comprising transmitting, by the network device, information about the second SRS resource to the location management device.

10. The method is The method further comprises receiving, by the network device, first indication information from the location management device, the first indication information indicating setting, for the terminal device to be positioned, a second SRS resource that completely overlaps with the first SRS resource in a time domain or setting, for the terminal device to be positioned, a second SRS resource that partially overlaps with the first SRS resource in a time domain, and the first reference SRS resource information is related to the first SRS resource, Setting, by the network device, a second SRS resource for the terminal device to be positioned based on the first reference SRS resource information is The method according to any one of claims 1 to 9, comprising setting, by the network device, the second SRS resource for the terminal device to be positioned based on the first reference SRS resource information and the first indication information.

11. The method is The method further comprises receiving, by the network device, second indication information from the location management device, the second indication information indicating an offset between the first SRS resource and the second SRS resource, and the first reference SRS resource information is related to the first SRS resource, Setting, by the network device, a second SRS resource for the terminal device to be positioned based on the first reference SRS resource information is The method according to any one of claims 1 to 10, comprising: setting, by the network device, the second SRS resource for the terminal device to be positioned based on the first reference SRS resource information and the second indication information.

12. The method further comprises: receiving, by the network device, third indication information from the location management device, the third indication information indicating that the first SRS resource is a reference resource, and the first reference SRS resource information being related to the first SRS resource, the method according to any one of claims 1 to 11.

13. Receiving, by the network device, the first reference SRS resource information from the location management device includes: receiving, by the network device, reference resource information from the location management device, the reference resource information including the first reference SRS resource information, the method according to any one of claims 1 to 12.

14. A resource setting method, comprising: transmitting, by a location management device, first reference sounding reference signal SRS resource information to a network device, the first reference SRS resource information being used for the network device to set a second SRS resource for a terminal device to be positioned; and receiving, by the location management device, information about the second SRS resource from the network device.

15. The method according to claim 14, wherein there is at least one overlapping time domain unit between the second SRS resource and the first SRS resource, and the first reference SRS resource information is related to the first SRS resource.

16. The method according to claim 14 or 15, wherein the first reference SRS resource information includes one or more of a start symbol position, a number of occupied symbols, a transmission periodicity and an offset, a transmission comb and an offset, a cyclic shift, a frequency domain position and an offset, or a frequency hopping setting.

17. The method according to claim 16, wherein the first reference SRS resource information includes at least the start symbol position, the number of occupied symbols, the transmission periodicity, and the offset.

18. The method according to claim 14 or 15, wherein the first reference SRS resource information includes identification information of the first SRS resource.

19. The method according to any one of claims 14 to 18, wherein the first reference SRS resource information is related to the SRS resources of at least one reference terminal device.

20. The method according to claim 19, wherein the first reference SRS resource information is related to the SRS resource of a first reference terminal device, and the first reference SRS resource information is information about the SRS resource of the first reference terminal device, or the first reference SRS resource information is information obtained based on the SRS resource of the first reference terminal device.

21. The method according to claim 19, wherein the first reference SRS resource information is related to the SRS resources of at least two reference terminal devices, and the first reference SRS resource information is information about the SRS resources of the at least two reference terminal devices, or the first reference SRS resource information is information obtained based on the SRS resources of the at least two reference terminal devices.

22. The transmitting, by the location management device, of the first reference SRS resource information to the network device The method according to any one of claims 14 to 21, further comprising: the location management device transmitting a plurality of reference SRS resource information and priority information of each of the plurality of reference SRS resource information to the network device, wherein the plurality of reference SRS resource information includes the first reference SRS resource information.

23. The method The method according to any one of claims 14 to 22, further comprising: the location management device transmitting first indication information to the network device, wherein the first indication information indicates setting, for the positioning target terminal device, a second SRS resource that completely overlaps with the first SRS resource in the time domain, or setting, for the positioning target terminal device, a second SRS resource that partially overlaps with the first SRS resource in the time domain, and the first reference SRS resource information is related to the first SRS resource.

24. The method Further comprising transmitting, by the location management device, second instruction information to the network device, wherein the second instruction information indicates an offset between the first SRS resource and the second SRS resource, and the first reference SRS resource information is related to the first SRS resource, and the method according to any one of claims 14 to 23.

25. The method further comprises Further comprising transmitting, by the location management device, third instruction information to the network device, wherein the third instruction information indicates that the first SRS resource is a reference resource, and the first reference SRS resource information is related to the first SRS resource, and the method according to any one of claims 14 to 24.

26. Transmitting, by the location management device, the first reference SRS resource information to the network device includes Transmitting, by the location management device, reference resource information to the network device, wherein the reference resource information includes the first reference SRS resource information, and the method according to any one of claims 14 to 25.

27. A communication device comprising at least one processor, the at least one processor being coupled to a memory and configured to read and execute instructions in the memory to implement the method according to any one of claims 1 to 13.

28. The communication device according to claim 27, further comprising the memory.

29. A communication device comprising at least one processor, the at least one processor being coupled to a memory and configured to read and execute instructions in the memory to implement the method according to any one of claims 14 to 26.

30. The communication device according to claim 29, further comprising the memory.

31. A computer-readable storage medium storing a computer program, wherein when the computer program is executed, the method according to any one of claims 1 to 26 is executed.

32. A system comprising the device according to claim 27 or 28, and further comprising the device according to claim 29 or 30.

Images