CN117751642A

CN117751642A - Communication method and device, communication equipment and communication system

Info

Publication number: CN117751642A
Application number: CN202380011464.XA
Authority: CN
Inventors: 李小龙; 李明菊; 李丽丝
Original assignee: Beijing Xiaomi Mobile Software Co Ltd
Current assignee: Beijing Xiaomi Mobile Software Co Ltd
Priority date: 2023-09-28
Filing date: 2023-09-28
Publication date: 2024-03-22

Abstract

The disclosure relates to a communication method and device, a communication device and a communication system. The communication method comprises the following steps: in response to the terminal determining that the amount of change of the first reference signal received power RSRP value compared to the second RSRP value is less than or equal to a threshold, the terminal determines that the timing advance TA of transmitting the sounding reference signal SRS is valid, the terminal is in a radio resource control RRC non-connected state, the SRS includes at least one of: a preconfigured SRS and an SRS configuring an effective area; the second RSRP value represents an RSRP value stored by the terminal, and the first RSRP value represents an RSRP value obtained by the terminal measuring a reference signal of a designated cell. The method and the device can effectively improve positioning accuracy.

Description

Communication method and device, communication equipment and communication system

Technical Field

The disclosure relates to the field of communication technologies, and in particular, to a communication method and device, a communication device, and a communication system.

Background

At present, an uplink positioning technology and an uplink and downlink hybrid positioning technology require a terminal to send an uplink positioning reference signal to network equipment. And the network equipment positions the terminal according to the uplink positioning reference signal sent by the terminal.

Disclosure of Invention

The network device may be inaccurate or failed to locate the terminal.

The embodiment of the disclosure provides a communication method and device, a communication device and a communication system.

According to a first aspect of embodiments of the present disclosure, there is provided a communication method, the method comprising: in response to a terminal determining that the amount of change of the first reference signal received power RSRP value from the second RSRP value is less than or equal to a threshold, the terminal determines that a timing advance TA of transmitting a sounding reference signal SRS is valid, the terminal is in a radio resource control RRC non-connected state, the SRS includes at least one of: a preconfigured SRS and an SRS configuring an effective area; the second RSRP value represents an RSRP value stored by the terminal, and the first RSRP value represents an RSRP value obtained by the terminal measuring a reference signal of a designated cell.

According to a second aspect of embodiments of the present disclosure, there is provided a communication method, the method comprising: transmitting second information in the process of transmitting the first information, wherein the first information is used for activating a preconfigured uplink positioning reference signal SRS, and the second information is used for indicating at least one of the following TA commands: a TA command indicated by the media access control unit; a TA command; absolute TA command.

According to a third aspect of embodiments of the present disclosure, there is provided a communication method, the method comprising: the variation of the first Reference Signal Received Power (RSRP) value compared with the second RSRP value is smaller than or equal to a threshold, the terminal determines that the Timing Advance (TA) of the terminal for transmitting the uplink positioning reference signal (SRS) is effective, the terminal is in a Radio Resource Control (RRC) non-connection state, and the SRS comprises at least one of the following: a preconfigured SRS and an SRS configuring an effective area; the second RSRP value represents an RSRP value stored by the terminal, and the first RSRP value represents an RSRP value obtained by the terminal by measuring a reference signal of a designated cell; the SRS is a preconfigured SRS, and the network equipment sends second information in the process of sending first information to the terminal, wherein the first information is used for activating the preconfigured SRS, and the second information is used for indicating at least one of the following TA commands: a TA command indicated by the media access control unit; a TA command; absolute TA command.

According to a fourth aspect of embodiments of the present disclosure, there is provided a terminal comprising: the processing module is configured to determine that a timing advance TA of a terminal transmitting an uplink positioning reference signal SRS is valid, where the terminal is in a radio resource control RRC non-connected state, where the change amount of the first reference signal received power RSRP value compared with the second RSRP value is less than or equal to a threshold, and the SRS includes at least one of: a preconfigured SRS and an SRS configuring an effective area; the second RSRP value represents an RSRP value stored by the terminal, and the first RSRP value represents an RSRP value obtained by the terminal measuring a reference signal of a designated cell.

According to a fifth aspect of embodiments of the present disclosure, there is provided a network device comprising: the transceiver module is configured to send second information in a process of sending first information to the terminal, where the first information is used to activate a preconfigured uplink positioning reference signal SRS, and the second information is used to indicate at least one of the following TA commands: a TA command indicated by the media access control unit; a TA command; absolute TA command.

According to a sixth aspect of embodiments of the present disclosure, there is provided a terminal comprising: one or more processors; the processor is configured to invoke instructions to cause the terminal to perform the communication method according to the first aspect.

According to a seventh aspect of embodiments of the present disclosure, there is provided a network device comprising: one or more processors; the processor is configured to invoke instructions to cause the network device to perform the communication method of the second aspect.

According to an eighth aspect of embodiments of the present disclosure, there is provided a communication system comprising a terminal configured to implement the communication method of any one of the first aspects and a network device configured to implement the communication method of the second aspect.

According to a ninth aspect of embodiments of the present disclosure, there is provided a storage medium storing instructions, characterized in that the instructions, when run on a communication device, cause the communication device to perform the communication method of any one of the first aspects.

According to a tenth aspect of embodiments of the present disclosure, there is provided a storage medium storing instructions that, when executed on a communication device, cause the communication device to perform the communication method of any one of the second aspects.

By the scheme provided by the embodiment of the disclosure, the accuracy of terminal positioning can be effectively improved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the following description of the embodiments refers to the accompanying drawings, which are only some embodiments of the present disclosure, and do not limit the protection scope of the present disclosure in any way.

Fig. 1 is a schematic architecture diagram of a communication system shown in accordance with an embodiment of the present disclosure.

Fig. 2 is a schematic diagram illustrating communication method interactions according to an embodiment of the present disclosure.

Fig. 3a is a flow chart of a communication method according to an embodiment of the disclosure.

Fig. 3b is a flow chart of a communication method according to an embodiment of the disclosure.

Fig. 3c is a flow chart of a communication method according to an embodiment of the disclosure.

Fig. 3d is a flow chart of a communication method according to an embodiment of the disclosure.

Fig. 3e is a flow chart of a communication method according to an embodiment of the disclosure.

Fig. 4a is a flow chart of a communication method according to an embodiment of the disclosure.

Fig. 4b is a flow chart of a communication method according to an embodiment of the disclosure.

Fig. 5 is a flow chart of a communication method shown according to an embodiment of the present disclosure.

Fig. 6a is a schematic structural view of a terminal according to an embodiment of the present disclosure.

Fig. 6b is a schematic diagram of a network device according to an embodiment of the disclosure.

Fig. 7a is a schematic diagram of a communication device according to an exemplary embodiment.

Fig. 7b is a schematic diagram of a chip architecture according to an exemplary embodiment.

Detailed Description

In a first aspect, an embodiment of the present disclosure proposes a communication method, including: the variation of the first Reference Signal Received Power (RSRP) value compared with the second RSRP value is smaller than or equal to a threshold value, and the Timing Advance (TA) of the terminal for transmitting the uplink positioning reference signal (SRS) is determined to be effective, wherein the terminal is in a Radio Resource Control (RRC) non-connection state, and the SRS comprises at least one of the following: a preconfigured SRS and an SRS configuring an effective area; the second RSRP value represents an RSRP value stored by the terminal, and the first RSRP value represents an RSRP value obtained by the terminal measuring a reference signal of a designated cell.

In the above embodiment, the TA for transmitting the preconfigured SRS or the SRS configured with the effective area is determined to be effective by the change amount of the first RSRP value compared with the second RSRP value being less than or equal to the threshold, so that the SRS configured with the preconfigured SRS and the SRS configured with the effective area can be transmitted under the condition that the TA is effective, and the probability of positioning failure is avoided. The first RSRP value represents an RSRP value obtained by the terminal measuring the reference signal of the designated cell, and positioning accuracy can be improved based on the first RSRP value which can be measured by the designated cell.

With reference to some embodiments of the first aspect, in some embodiments, the designating the cell includes at least one of: the second RSRP value corresponds to a cell; the terminal switches from the RRC connection state to the last service cell before the RRC non-connection state; a cell in which a terminal receives a TA command; the terminal adjusts the cell of the TA by itself; the terminal is currently serving cell.

In the above embodiment, the first RSRP values determined by different designated cells can adapt to positioning under different conditions, so as to flexibly perform positioning and improve positioning accuracy.

With reference to some embodiments of the first aspect, in some embodiments, the second RSRP value includes at least one of: the terminal receives the RSRP value of the district of SRS configuration information in the RRC connection state; the terminal switches from the RRC connection state to the RSRP value of the last service cell before the RRC non-connection state; the terminal receives the RSRP value of the cell of the TA command; the terminal adjusts the RSRP value of the cell of the TA by itself; the RSRP value of the current serving cell of the terminal.

In the above embodiment, the RSRP value stored by the terminal, that is, the second RSRP value may determine the different second RSRP values under different conditions, so as to determine whether the TA is valid more accurately, thereby improving positioning accuracy.

With reference to some embodiments of the first aspect, in some embodiments, the method further comprises at least one of: the terminal receives SRS configuration information through an RRC release message, wherein the SRS configuration information is used for configuring the preconfigured SRS; the terminal receives SRS configuration information through an RRC release message, wherein the SRS configuration information is used for configuring SRS of an effective area; and the terminal receives SRS configuration information through RRC reconfiguration information, wherein the SRS configuration information is used for configuring the preconfigured SRS.

In the above embodiment, the terminal may determine whether the TA of the preconfigured SRS and the SRS configuring the effective area is valid by receiving the SRS configuration information for the preconfigured SRS or the SRS configuring the effective area, thereby improving positioning accuracy.

With reference to some embodiments of the first aspect, in some embodiments, the method further includes: and the terminal performs cell reselection, adjusts TA by itself, measures a reference signal of the current service cell to obtain RSRP, and updates the stored second RSRP value into the measured RSRP value.

In the above embodiment, for the terminal with the self-adjusting TA authority, the second RSRP value may be updated to the RSRP value of the current serving cell while the self-adjusting TA is performed, so as to ensure that the second RSRP value is more reliable, determine that the TA is effective and more accurate, and improve the positioning accuracy.

With reference to some embodiments of the first aspect, in some embodiments, the method further includes: and determining that a timer of the TA associated with the uplink positioning reference signal is in an operating state.

In the above embodiment, it may be determined that the timer of the TA associated with the uplink positioning reference signal is in an operating state, and based on this, it is determined whether the TA is valid, so that the TA validity determination may be more accurate, thereby improving the positioning accuracy.

With reference to some embodiments of the first aspect, in some embodiments, the SRS is a preconfigured SRS, and the method further includes: first information is received, the first information being used to activate the preconfigured SRS.

With reference to some embodiments of the first aspect, in some embodiments, the method further includes: and sending SRS according to the preconfigured SRS.

With reference to some embodiments of the first aspect, in some embodiments, before receiving the first information and/or before transmitting the SRS according to the preconfigured SRS, the method further includes at least one of: not starting a TA timer associated with the preconfigured SRS; the TA is not automatically adjusted when the cell reselection occurs; the RSRP value of the last serving cell before the terminal is switched from the RRC connection state to the RRC non-connection state is not saved; the RSRP value of the district in which the terminal receives the SRS configuration information in the RRC connection state is not saved; not evaluating a relationship of a variation between the first RSRP value and the second RSRP value to a threshold; the terminal performs cell reselection, adjusts TA automatically, and does not update the second RSRP value to the RSRP value of the currently served cell; receiving second information, not storing the RSRP value of the current serving cell or not updating the stored RSRP value, wherein the second information is used for indicating at least one of the following TA commands: a TA command indicated by the media access control unit; a TA command; absolute TA command.

In the above embodiment, if the SRS is a preconfigured SRS, information for activating the preconfigured SRS is received.

In the above embodiment, the terminal transmits the SRS according to the preconfigured SRS.

In the above embodiment, if the SRS is a preconfigured SRS, before receiving the information for activating the preconfigured SRS or before transmitting the SRS, the at least one operation is not performed, so that the determination of whether the TA is valid is more accurate, and positioning accuracy is improved.

With reference to some embodiments of the first aspect, in some embodiments, the SRS is a preconfigured SRS, and when first information is received, the first information is used to activate the preconfigured SRS, and/or when the SRS is transmitted according to the preconfigured SRS, the method further includes at least one of: receiving second information sent by the network device in the process of receiving the first information sent by the network device, wherein the second information is used for indicating at least one of the following TA commands: a TA command indicated by the media access control unit; a TA command; an absolute TA command; starting a TA timer associated with the preconfigured SRS; measuring the RSRP value of the reference signal of the current serving cell as a second RSRP value; and evaluating the relation between the variation quantity between the first RSRP value and the second RSRP value and a threshold value.

In the above embodiment, if the SRS is preconfigured, the at least one operation may not be performed when receiving the information for activating the preconfigured SRS or when transmitting the SRS, so that the determination of whether the TA is valid is more accurate, and positioning accuracy is improved.

With reference to some embodiments of the first aspect, in some embodiments, after the starting a TA timer associated with the preconfigured SRS, the method further includes at least one of: self-adjusting TA when cell reselection occurs; the cell reselection is carried out, TA is automatically adjusted, and the second RSRP value is updated to be the RSRP value of the current service cell; and receiving the second information, storing the RSRP value of the current serving cell, and/or updating the stored RSRP value.

In the above embodiment, if the SRS is preconfigured, after receiving the information for activating the preconfigured SRS or after transmitting the SRS and after the TA timer of the preconfigured SRS has been started, the above at least one operation is performed, so that whether the TA is valid or not is more accurately determined, and positioning accuracy is improved.

In the above embodiment, the second information may be sent during the process of sending the first information, so that the terminal and the field adjust the TA, thereby ensuring that the TA is as effective as possible and improving the positioning accuracy.

With reference to some embodiments of the second aspect, in some embodiments, the method further includes: receiving an SRS, wherein a TA corresponding to the SRS is determined to be valid based on that the variation of a first Reference Signal Received Power (RSRP) value compared with a second RSRP value is smaller than or equal to a threshold, and the SRS comprises at least one of the following: a preconfigured SRS and an SRS configuring an effective area; the second RSRP value represents an RSRP value stored by the terminal, and the first RSRP value represents an RSRP value obtained by the terminal measuring a reference signal of a designated cell.

In the above embodiment, the network device may receive the SRS whose TA is determined to be valid based on the variation of the first RSRP value and the second RSRP value being less than or equal to the threshold. The SRS comprises a preconfigured SRS or an SRS of a configuration effective area, so that the SRS of the preconfigured SRS and the SRS of the configuration effective area can be received under the condition that TA is effective, and the probability of positioning failure is avoided. The first RSRP value represents an RSRP value obtained by the terminal measuring the reference signal of the designated cell, and positioning accuracy can be improved based on the first RSRP value which can be measured by the designated cell.

With reference to some embodiments of the second aspect, in some embodiments, the designated cell includes at least one of: the second RSRP value corresponds to a cell; the terminal switches from the RRC connection state to the last service cell before the RRC non-connection state; a cell in which a terminal receives a TA command; the terminal adjusts the cell of the TA by itself; the terminal is currently serving cell.

With reference to some embodiments of the second aspect, in some embodiments, the second RSRP value includes at least one of: the terminal receives the RSRP value of the district of SRS configuration information in the RRC connection state; the terminal switches from the RRC connection state to the RSRP value of the last service cell before the RRC non-connection state; the terminal receives the RSRP value of the cell of the TA command; the terminal adjusts the RSRP value of the cell of the TA by itself; the RSRP value of the current serving cell of the terminal.

With reference to some embodiments of the second aspect, in some embodiments, the method further comprises at least one of: the terminal receives SRS configuration information through an RRC release message, wherein the SRS configuration information is used for configuring the preconfigured SRS; the terminal receives SRS configuration information through an RRC release message, wherein the SRS configuration information is used for configuring SRS of an effective area; and the terminal receives SRS configuration information through RRC reconfiguration information, wherein the SRS configuration information is used for configuring the preconfigured SRS.

In the above embodiment, the network device may determine whether the TA of the preconfigured SRS and the SRS configuring the effective area is valid by sending the SRS configuration information for the preconfigured SRS or the SRS configuring the effective area, thereby improving positioning accuracy.

In the above embodiment, the TA for transmitting the preconfigured SRS or the SRS configured with the effective area is determined to be effective by the change amount of the first RSRP value compared with the second RSRP value being less than or equal to the threshold, so that the SRS configured with the preconfigured SRS and the SRS configured with the effective area can be transmitted under the condition that the TA is effective, and the probability of positioning failure is avoided. The first RSRP value represents an RSRP value obtained by the terminal measuring the reference signal of the designated cell, and positioning accuracy can be improved based on the first RSRP value which can be measured by the designated cell. The second information can be sent in the process of sending the first information, so that the terminal and the field can conveniently adjust the TA, the TA is ensured to be effective as much as possible, and the positioning accuracy is improved.

In a fourth aspect, embodiments of the present disclosure provide a terminal, where the terminal includes at least one of a communication module and a processing module; wherein the terminal is configured to perform the first aspect and optional implementation manners of the first aspect.

In a fifth aspect, embodiments of the present disclosure provide a network device, including a communication module; wherein the network device is configured to perform the second aspect and optional implementations of the second aspect.

In a sixth aspect, an embodiment of the present disclosure proposes a terminal, including: one or more processors; wherein the terminal is configured to perform the first aspect and optional implementation manners of the first aspect.

In a seventh aspect, embodiments of the present disclosure provide a network device, including: one or more processors; wherein the network device is configured to perform the second aspect and optional implementations of the second aspect.

In an eighth aspect, an embodiment of the present disclosure proposes a communication system including: a terminal, a network device; wherein the terminal is configured to perform the methods described in the first and third aspects, the optional implementation manners of the first and third aspects, and the network device is configured to perform the methods described in the second and third aspects, the optional implementation manners of the second and third aspects.

In a ninth aspect, embodiments of the present disclosure provide a storage medium storing instructions that, when executed on a communication device, cause the communication device to perform a method as described in the alternative implementations of the first and third aspects, the second and third aspects.

In a tenth aspect, embodiments of the present disclosure propose a program product which, when executed by a communication device, causes the communication device to perform the method as described in the optional implementation manners of the first and third aspects, the second and third aspects.

In an eleventh aspect, embodiments of the present disclosure propose a computer program which, when run on a computer, causes the computer to carry out the method as described in the alternative implementations of the first and third aspects, the second and third aspects.

It will be appreciated that the above-described terminals, network devices, communication systems, storage media, program products, computer programs are all adapted to perform the methods set forth in the embodiments of the present disclosure. Therefore, the advantages achieved by the method can be referred to as the advantages of the corresponding method, and will not be described herein.

The embodiment of the disclosure provides a communication method. In some embodiments, terms such as a communication method and an information processing method may be replaced with each other, terms such as a communication device and an information processing device may be replaced with each other, and terms such as an information processing system and a communication system may be replaced with each other.

The embodiments of the present disclosure are not intended to be exhaustive, but rather are exemplary of some embodiments and are not intended to limit the scope of the disclosure. In the case of no contradiction, each step in a certain embodiment may be implemented as an independent embodiment, and the steps may be arbitrarily combined, for example, a scheme in which part of the steps are removed in a certain embodiment may also be implemented as an independent embodiment, the order of the steps in a certain embodiment may be arbitrarily exchanged, and further, alternative implementations in a certain embodiment may be arbitrarily combined; furthermore, various embodiments may be arbitrarily combined, for example, some or all steps of different embodiments may be arbitrarily combined, and an embodiment may be arbitrarily combined with alternative implementations of other embodiments.

In the various embodiments of the disclosure, terms and/or descriptions of the various embodiments are consistent throughout the various embodiments and may be referenced to each other in the absence of any particular explanation or logic conflict, and features from different embodiments may be combined to form new embodiments in accordance with their inherent logic relationships.

The terminology used in the embodiments of the disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure.

In the presently disclosed embodiments, elements that are referred to in the singular, such as "a," "an," "the," "said," etc., may mean "one and only one," or "one or more," "at least one," etc., unless otherwise indicated. For example, where an article (article) is used in translation, such as "a," "an," "the," etc., in english, a noun following the article may be understood as a singular expression or as a plural expression.

In the presently disclosed embodiments, "plurality" refers to two or more.

In some embodiments, terms such as "at least one of", "one or more of", "multiple of" and the like may be substituted for each other.

In some embodiments, "A, B at least one of", "a and/or B", "in one case a, in another case B", "in response to one case a", "in response to another case B", and the like, may include the following technical solutions according to circumstances: in some embodiments a (a is performed independently of B); b (B is performed independently of a) in some embodiments; in some embodiments, execution is selected from a and B (a and B are selectively executed); in some embodiments a and B (both a and B are performed). Similar to that described above when there are more branches such as A, B, C.

In some embodiments, the description modes such as "a or B" may include the following technical schemes according to circumstances: in some embodiments a (a is performed independently of B); b (B is performed independently of a) in some embodiments; in some embodiments execution is selected from a and B (a and B are selectively executed). Similar to that described above when there are more branches such as A, B, C.

The prefix words "first", "second", etc. in the embodiments of the present disclosure are only for distinguishing different description objects, and do not limit the location, order, priority, number, content, etc. of the description objects, and the statement of the description object refers to the claims or the description of the embodiment context, and should not constitute unnecessary limitations due to the use of the prefix words. For example, if the description object is a "field", the ordinal words before the "field" in the "first field" and the "second field" do not limit the position or the order between the "fields", and the "first" and the "second" do not limit whether the "fields" modified by the "first" and the "second" are in the same message or not. For another example, describing an object as "level", ordinal words preceding "level" in "first level" and "second level" do not limit priority between "levels". As another example, the number of descriptive objects is not limited by ordinal words, and may be one or more, taking "first device" as an example, where the number of "devices" may be one or more. Furthermore, objects modified by different prefix words may be the same or different, e.g., the description object is "a device", then "a first device" and "a second device" may be the same device or different devices, and the types may be the same or different; for another example, the description object is "information", and the "first information" and the "second information" may be the same information or different information, and the contents thereof may be the same or different.

In some embodiments, "comprising a", "containing a", "for indicating a", "carrying a", may be interpreted as carrying a directly, or as indicating a indirectly.

In some embodiments, terms "responsive to … …", "responsive to determination … …", "in the case of … …", "at … …", "when … …", "if … …", "if … …", and the like may be interchanged.

In some embodiments, terms "greater than", "greater than or equal to", "not less than", "more than or equal to", "not less than", "above" and the like may be interchanged, and terms "less than", "less than or equal to", "not greater than", "less than or equal to", "not more than", "below", "lower than or equal to", "no higher than", "below" and the like may be interchanged.

In some embodiments, an apparatus or the like may be interpreted as an entity, or may be interpreted as a virtual, and the names thereof are not limited to the names described in the embodiments, "apparatus," "device," "circuit," "network element," "node," "function," "unit," "section," "system," "network," "chip system," "entity," "body," and the like may be replaced with each other.

In some embodiments, a "network" may be interpreted as an apparatus (e.g., access network device, core network device, etc.) contained in a network.

In some embodiments, "access network device (access network device, AN device)", "radio access network device (radio access network device, RAN device)", "Base Station (BS)", "radio base station (radio base station)", "fixed station (fixed station)", "node (node)", "access point (access point)", "transmit point (transmission point, TP)", "Receive Point (RP)", "transmit receive point (transmit/receive point), the terms TRP)", "panel", "antenna array", "cell", "macrocell", "microcell", "femto cell", "pico cell", "sector", "cell group", "serving cell", "carrier", "component carrier (component carrier)", bandwidth part (BWP) and the like may be replaced with each other.

In some embodiments, "terminal," terminal device, "" user equipment, "" user terminal, "" mobile station, "" mobile terminal, MT) ", subscriber station (subscriber station), mobile unit (mobile unit), subscriber unit (subscriber unit), wireless unit (wireless unit), remote unit (remote unit), mobile device (mobile device), wireless device (wireless device), wireless communication device (wireless communication device), remote device (remote device), mobile subscriber station (mobile subscriber station), access terminal (access terminal), mobile terminal (mobile terminal), wireless terminal (wireless terminal), remote terminal (remote terminal), handheld device (handset), user agent (user agent), mobile client (mobile client), client (client), and the like may be substituted for each other.

In some embodiments, the access network device, core network device, or network device may be replaced with a terminal. For example, the embodiments of the present disclosure may also be applied to a configuration in which an access network device, a core network device, or communication between a network device and a terminal is replaced with communication between a plurality of terminals (for example, device-to-device (D2D), vehicle-to-device (V2X), or the like). In this case, the terminal may have all or part of the functions of the access network device. In addition, terms such as "uplink", "downlink", and the like may be replaced with terms corresponding to communication between terminals (e.g., "side)". For example, uplink channels, downlink channels, etc. may be replaced with side-uplink channels, uplink, downlink, etc. may be replaced with side-downlink channels.

In some embodiments, the terminal may be replaced with an access network device, a core network device, or a network device. In this case, the access network device, the core network device, or the network device may have all or part of the functions of the terminal.

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

In some embodiments, data, information, etc. may be obtained after user consent is obtained.

Furthermore, each element, each row, or each column in the tables of the embodiments of the present disclosure may be implemented as a separate embodiment, and any combination of elements, any rows, or any columns may also be implemented as a separate embodiment.

As shown in fig. 1, the communication system 100 includes a terminal (terminal) 101 and a network device 102.

In some embodiments, the terminal 101 includes at least one of a mobile phone (mobile phone), a wearable device, an internet of things device, a communication enabled car, a smart car, a tablet (Pad), a wireless transceiver enabled computer, a Virtual Reality (VR) terminal device, an augmented reality (augmented reality, AR) terminal device, a wireless terminal device in industrial control (industrial control), a wireless terminal device in unmanned (self-driving), a wireless terminal device in teleoperation (remote medical surgery), a wireless terminal device in smart grid (smart grid), a wireless terminal device in transportation security (transportation safety), a wireless terminal device in smart city (smart city), a wireless terminal device in smart home (smart home), for example, but is not limited thereto.

In some embodiments, the network device 102 may include at least one of an access network device and a core network device.

In some embodiments, the terminal 101 includes at least one of a mobile phone (mobile phone), a wearable device, an internet of things device, a communication enabled car, a smart car, a tablet (Pad), a wireless transceiver enabled computer, a Virtual Reality (VR) terminal 101 device, an augmented reality (augmented reality, AR) terminal 101 device, a wireless terminal 101 device in industrial control (industrial control), a wireless terminal 101 device in unmanned (self-driving), a wireless terminal 101 device in teleoperation (remote medical surgery), a wireless terminal 101 device in smart grid (smart grid), a wireless terminal 101 device in transportation security (transportation safety), a wireless terminal 101 device in smart city (smart city), a wireless terminal 101 device in smart home (smart home), for example, but is not limited thereto.

In some embodiments, the access network device is, for example, a node or device that accesses the terminal 101 to a wireless network, and the access network device may include at least one of an evolved NodeB (eNB), a next generation evolved NodeB (next generation eNB, ng-eNB), a next generation NodeB (next generation NodeB, gNB), a NodeB (node B, NB), a Home NodeB (HNB), a home NodeB (home evolved nodeB, heNB), a wireless backhaul device, a radio network controller (radio network controller, RNC), a base station controller (base station controller, BSC), a base transceiver station (base transceiver station, BTS), a baseband unit (BBU), a mobile switching center, a base station in a 6G communication system, an Open base station (Open RAN), a Cloud base station (Cloud RAN), a base station in other communication systems, a wireless fidelity (wireless fidelity, wiFi) system, but is not limited thereto.

In some embodiments, the technical solutions of the present disclosure may be applied to an Open RAN architecture, where an access network device or an interface in an access network device according to the embodiments of the present disclosure may become an internal interface of the Open RAN, and flow and information interaction between these internal interfaces may be implemented by using software or a program.

In some embodiments, the access network device may be composed of a Central Unit (CU) and a Distributed Unit (DU), where the CU may also be referred to as a control unit (control unit), and the structure of the CU-DU may be used to split the protocol layers of the access network device, where functions of part of the protocol layers are centrally controlled by the CU, and functions of the rest of all the protocol layers are distributed in the DU, and the DU is centrally controlled by the CU, but is not limited thereto.

In some embodiments, the core network device may be a device, including one or more network elements, or may be a plurality of devices or groups of devices, including one or more network elements, or may be physical. The core network comprises, for example, at least one of an evolved packet core (evolved packet core, EPC), a 5G core network (5G core network,5GCN), a next generation core (next generation core, NGC).

It may be understood that, the communication system described in the embodiments of the present disclosure is for more clearly describing the technical solutions of the embodiments of the present disclosure, and is not limited to the technical solutions provided in the embodiments of the present disclosure, and those skilled in the art can know that, with the evolution of the system architecture and the appearance of new service scenarios, the technical solutions provided in the embodiments of the present disclosure are applicable to similar technical problems.

The embodiments of the present disclosure described below may be applied to the communication system 100 shown in fig. 1, or a part of the main body, but are not limited thereto. The respective bodies shown in fig. 1 are examples, and the communication system may include all or part of the bodies in fig. 1, or may include other bodies than fig. 1, and the number and form of the respective bodies may be arbitrary, and the respective bodies may be physical or virtual, and the connection relationship between the respective bodies is examples, and the respective bodies may not be connected or may be connected, and the connection may be arbitrary, direct connection or indirect connection, or wired connection or wireless connection.

The embodiments of the present disclosure may be applied to long term evolution (Long Term Evolution, LTE), LTE-Advanced (LTE-a), LTE-Beyond (LTE-B), upper 3G, IMT-Advanced, fourth generation mobile communication system (4th generation mobile communication system,4G)), fifth generation mobile communication system (5th generation mobile communication system,5G), 5G New air (New Radio, NR), future wireless access (Future Radio Access, FRA), new wireless access technology (New-Radio Access Technology, RAT), new wireless (New Radio, NR), new wireless access (New Radio access, NX), future generation wireless access (Future generation Radio access, FX), global System for Mobile communications (GSM (registered trademark)), CDMA2000, ultra mobile broadband (Ultra Mobile Broadband, UMB), IEEE 802.11 (registered trademark), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.20, ultra WideBand (Ultra-wide bandwidth, UWB), bluetooth (Bluetooth) mobile communication network (Public Land Mobile Network, PLMN, device-D-Device, device-M, device-M, internet of things system, internet of things (internet of things), machine-2, device-M, device-M, internet of things (internet of things), system (internet of things), internet of things 2, device (internet of things), machine (internet of things), etc. In addition, a plurality of system combinations (e.g., LTE or a combination of LTE-a and 5G, etc.) may be applied.

In one embodiment, the positioning of the terminal may be achieved by an uplink positioning technique followed by an uplink and downlink hybrid positioning technique. For example, the network device configures the SRS for the terminal, that is, the network device sends configuration information to the terminal, and the terminal sends an uplink positioning reference signal to the network device according to the configuration information. For example, the uplink positioning reference signal may be a sounding reference signal (positioning sounding reference signal, positioning SRS) for positioning. The uplink positioning reference signal, the positioning SRS and the SRS in the present disclosure have the same meaning and may be used alternatively.

In one embodiment, a terminal in a radio resource control non-connected state may be located. That is, the terminal may transmit the SRS while in the RRC non-connected state. The radio resource control non-connected state may include a radio resource control inactive state (radio resource control inactive, RRC inactive) and/or a radio resource control idle state (radio resource control idle, RRC idle). For example, the network device may configure the SRS to the terminal through an infinite resource control release (radio resource control release) message when the terminal is transitioned from a radio resource control connected state (radio resource control connected, RRC connected) to an RRC non-connected state. I.e., the RRC release message contains configuration information for configuring the SRS. And the terminal determines the TA for transmitting the SRS according to the Timing Advance (TA) of the configuration information. The TA may be understood as that when the terminal sends a message to the network device, because the distances between different terminals and the network device are different, in order to make the uplinks of different terminals reach the network device at the same time, the terminal with a longer distance needs to send the message in advance compared with the terminal with a shorter distance, and the amount of time in advance is the TA. The TA may be configured by the network device for the terminal, and may be invalid when the terminal moves from a location closer to the network device to a location farther from the network device. Determining a TA that transmits SRS, and determining whether the TA is valid is also required in transmitting SRS based on the determined TA.

In one embodiment, whether the TA is valid may be determined by a TA timer (timer). For example, if the timer is overtime, the TA is invalid, the terminal stops sending the uplink positioning reference signal, and if the timer is not overtime, the terminal can continue sending the uplink positioning reference signal. The TAtimer may be, for example, an inactive PosSRS-TimeAligningtime.

In one embodiment, whether the TA is valid may be determined based on the amount of change in the reference signal received power (reference signal receiving power, RSRP) measured by the terminal. For example, the measured RSRP value is compared with the stored RSRP value, and if the measured RSRP value does not exceed the threshold value by an increase or decrease compared with the stored RSRP value, the TA is considered valid and the uplink positioning reference signal is continued to be transmitted. If the increase or decrease exceeds the threshold, the TA is considered invalid and the uplink positioning reference signal is stopped. The threshold value may be, for example, inactive PosSRS-RSRP-ChangeThreshold.

In one embodiment, whether the TA is valid may be determined by determining an amount of change in RSRP value measured from the terminal as follows.

RRC configures the following parameters for validation for SRS transmission in RRC-INACTIVE (radio resource control (radio resource control INACTIVE, RRC) configures the following parameters in the RRC non-connected state to verify SRS transmission) -Inactive PosSRS-RSRP-ChangeThreshold: RSRP threshold for the increase/decrease of RSRP for time alignment authentication (threshold for RSRP increase or decrease is used to determine the validity of the time advance)

The MAC entity shall (MAC entity shall meet):

1>if the UEreceives configuration for SRS transmission in RRC_INACTIVE (if the terminal receives SRS configuration for RRC non-connected transmission SRS)

2>store the RSRP of the downlink pathloss reference with the current RSRP value of the downlink pathloss reference as in TS 38.331[5 (determining the current downlink loss RSRP value according to TS 38.331[5] and saving the RSRP value)

1>else if the UE is configured with SRS transmission in RRC_INACTIVE (otherwise, if the terminal is configured for RRC non-connected SRS transmission, 1)

2>if Timing Advance Command MAC CE is received as in clause 5.2,or (media access control unit (medium access control control element, MAC CE) if timing advance commands are received as per clause 5.2), or;

2>if Timing Advance Command or Absolute Timing Advance Command is received for Random Access procedure that is successfully completed (if a timing advance command or absolute timing advance command is received during successfully completed random access):

3>update the stored the RSRP of the downlink pathloss reference with the current RSRP value of the downlink pathloss reference (updating the stored RSRP value of the downlink path loss reference to the RSRP value of the current downlink path loss reference).

The MAC entity shall consider the TA to be valid when the following conditions are fulfilled (MAC should consider TA valid when the following conditions are met):

1>compared to the stored downlink pathloss reference RSRP value,the current RSRP value of the downlink pathloss reference has not increased/decreased by more than inactivePosSRS-RSRP-ChangeThreshold, if configured (if an inactive posers-RSRP-ChangeThreshold is configured, the current downlink path loss reference RSRP value is not increased/decreased by more than the inactive posers-RSRP-ChangeThreshold compared to the stored downlink path loss reference RSRP value); and

1> Inactive PosSRS-TimeAlignmentTimer is running (Inactive Possrs-timealignmentim is running)

In one embodiment, the uplink positioning reference signal corresponds to a valid area (validity area). For example, the active area may consist of a physical cell identity list (physical cell identifier list, PCI list). If the terminal is in the effective area, the network equipment can be considered to be effective for the SRS configured for the terminal; if the terminal is not in the effective area, the network device can be considered to be invalid in configuring the SRS for the terminal. For SRS configuring the active area, it is also necessary to determine whether TA is valid.

In one embodiment, the saved RSRP value may be the last serving cell (last serving cell). Or if the terminal has the capability of self-adjusting the TA, the stored RSRP value is the RSRP value of the synchronous signal block (synchronization signal block, SSB) of the current service cell.

In the present embodiment, the manner in which whether or not the TA is valid is also uncertain because the stored RSRP value is different.

In one embodiment, for the preconfigured SRS (preconfigured sounding reference signal, preconfigured SRS), preconfigured SRS may not have been activated yet and is released due to TA inactivity.

Fig. 2 is a schematic diagram illustrating communication method interactions according to an embodiment of the present disclosure. As shown in fig. 2, embodiments of the present disclosure relate to a communication method for a communication system 100, the method including:

in step S2101, the network apparatus 102 transmits SRS configuration information to the terminal 101.

In some embodiments, terminal 101 receives SRS configuration information transmitted by network device 102.

In some embodiments, terms such as "send," "transmit," "report," "send," "transmit," "bi-directional," "send and/or receive," and the like may be used interchangeably.

In some embodiments, "acquire," "obtain," "receive," "transmit," "bi-directional transmit," "send and/or receive" may be used interchangeably and may be interpreted as receiving from other principals, acquiring from protocols, acquiring from higher layers, processing itself, autonomous implementation, etc.

In some embodiments, the SRS configuration information is used to configure the SRS. Wherein the SRS includes at least one of: preconfigured SRS, and SRS configuring an active area. The preconfigured SRS may be understood as an SRS configured by the preconfigured SRS configuration information. The terminal receives the preconfigured SRS configuration information and does not immediately send SRS to the network device. For example, the terminal does not transmit SRS to the network device before the preconfigured SRS configuration information is activated, and the terminal transmits SRS to the network device after the preconfigured SRS configuration information is activated. The activation may be, for example, setting a timer, and when the timer stops running, i.e. the preset time is reached, the terminal activates the preconfigured SRS configuration information. Or when the terminal receives the information for activating the preconfigured SRS sent by the network equipment, activating the preconfigured SRS and starting to send the SRS. The SRS configured with the effective area may be understood as information of the effective area carried in the SRS configuration information, which is used to instruct the terminal to send the SRS to the network device in the effective area, and if the terminal is not in the effective area, the SRS is stopped to be sent to the network device.

In some embodiments, the preconfigured SRS may also configure the active area. That is, the pre-configured SRS may be an SRS that is pre-configured and configures an effective area, or an SRS that is pre-configured and does not configure an effective area. The SRS configuring the effective region may be an SRS that is not preconfigured and configures the effective region.

In some embodiments, SRS configuration information may also be used to configure SRS that is not preconfigured and does not configure the active area.

In some embodiments, network device 102 transmits SRS configuration information to terminal 101 in at least one of the following ways: the network device 102 transmits SRS configuration information to the terminal 101 through an RRC release message, where the SRS configuration information is used to configure the preconfigured SRS. The network device 102 transmits SRS configuration information to the terminal 101 through an RRC release message, where the SRS configuration information is used to configure SRS of the active area. The network device 102 transmits SRS configuration information for configuring the SRS of the effective area to the terminal 101 through the SRS reconfiguration information. It can be appreciated that the SRS configuration information is used to configure the preconfigured SRS to indicate that the network device configured SRS is a preconfigured SRS. The SRS configuration information is used to configure the SRS of the effective area, the SRS representation SRS configuration information is used to configure the SRS, and the SRS configures the effective area.

In some embodiments, the network device 102 may send SRS configuration information to the terminal 101 through an RRC release message, where the SRS configuration information is used to configure SRS of the active area. For example, the SRS configuration information includes information of an effective area, and after receiving the SRS configuration information, the terminal may determine whether the TA is valid, thereby determining whether the SRS may be continuously transmitted.

In some embodiments, the network device 102 may send SRS configuration information to the terminal 101 through an RRC release message at the terminal 101, or the network device 102 may send SRS configuration information to the terminal 101 through RRC reconfiguration information, where the SRS configuration information is used to configure the preconfigured SRS. For example, the terminal may determine whether the TA is valid after receiving the SRS configuration information and after the SRS configuration information is activated, and thus may determine whether to continue transmitting the SRS.

In some embodiments, the name of the SRS configuration information is not limited in some embodiments. Which may be, for example, "configuration information", "SRS information", etc.

In some embodiments, names of information and the like are not limited to the names described in the embodiments, "information", "message", "signal", "signaling", "report", "configuration", "instruction", "command", "channel", "parameter", "field", "symbol", "codebook", "code word", "code point", "bit", "data", "program", and the like may be replaced with each other.

In step S2102, it is determined that the timer of the TA associated with SRS is in an operation state.

In some embodiments, a timer of the TA is used to indicate whether the TA transmitting the SRS is valid. If the timer of the TA is in an operating state, that is, the preset time is not reached or the condition of stopping the timer is not satisfied, the TA can be considered to be valid. If the timer of the TA is in a timeout or dead state, the TA may be considered invalid.

In some embodiments, if the timer of the SRS-associated TA is in an operating state, the method may further evaluate whether the amount of change in the first RSRP value from the second RSRP value is less than or equal to a threshold value, and further determine whether the TA is valid.

If the timer of the SRS-associated TA is in an operation timeout or out-of-operation state, the TA may be considered invalid, so that it is not necessary to continuously evaluate whether the amount of change of the first RSRP value compared to the second RSRP value is less than or equal to the threshold value.

In the above embodiment, if the SRS is a preconfigured SRS, the terminal 101 receives information for activating the preconfigured SRS. The terminal 101 receives the first information.

In some embodiments, if the SRS is a preconfigured SRS, the network device does not configure an RSRP threshold (RSRP-threshold) to the terminal before receiving the first information or before transmitting the SRS according to the preconfigured SRS, and configures the RSRP-threshold to the terminal when receiving the first information or when transmitting the SRS according to the preconfigured SRS. Wherein RSRP-threshold is used to determine whether TA is valid as compared to the first RSRP value and the second RSRP value.

In some embodiments, if the SRS is a preconfigured SRS, the network device does not configure a TA timer associated with the preconfigured SRS to the terminal before receiving the first information or before transmitting the SRS according to the preconfigured SRS. Upon receiving the first information, or upon transmitting the SRS according to the preconfigured SRS, the network device configures a TA timer associated with the preconfigured SRS to the terminal.

In some embodiments, if the SRS is a preconfigured SRS, the terminal does not start a timer of the TA associated with the SRS before the first information is received or before the SRS is transmitted according to the preconfigured SRS. When the first information is received or when the SRS is started to be transmitted according to the preconfigured SRS, a timer of the TA associated with the SRS is started. The first information is used to activate the preconfigured SRS.

In step S2103, the terminal 101 determines that the TA at which the terminal 101 transmits the SRS is valid, in which the first RSRP value is less than or equal to the threshold value in comparison with the second RSRP value. Wherein the terminal is in an RRC non-connected state. The SRS includes at least one of: preconfigured SRS, SRS configuring an effective area.

In some embodiments, after determining that the timer of the TA associated with the SRS is in the running state, it may be evaluated whether the variation of the first RSRP value compared with the second RSRP value is less than or equal to the threshold, and if so, it is determined that the TA of the terminal transmitting the SRS is valid.

In some embodiments, if the timer of the SRS-associated TA is in an operation timeout or out-of-operation state, the TA may be deemed invalid, thereby eliminating the need to continue to evaluate whether the amount of change in the first RSRP value from the second RSRP value is less than or equal to the threshold.

In some embodiments, the second RSRP value represents a terminal-saved RSRP value, and the first RSRP value represents an RSRP value obtained by the terminal measuring a reference signal of a specified cell. After the terminal saves the RSRP value, i.e. determines the second RSRP value, the terminal may obtain the first RSRP value by measuring the reference signal of the designated cell, and evaluate whether the variation of the first RSRP value compared with the second RSRP value is less than or equal to the threshold value. The reference signal may be SSB, for example. The reference signal may also be other types of reference signals, such as a channel state information reference signal (channel state information-reference signal, CSI-RS), a demodulation reference signal (demodulation reference signal, DMRS), etc., which are merely examples, but are not limited thereto. And when the variation is smaller than or equal to the threshold value, determining that the TA of the terminal for transmitting the SRS is effective. For example, the terminal may evaluate the amount of change of the second RSRP value compared to the first RSRP value in real time, or the terminal may evaluate the amount of change of the second RSRP value compared to the first RSRP value every preset time interval. The amount of change may be an increase or a decrease. That is, if the first RSRP value increases compared to the second RSRP value by an amount less than or equal to the threshold value, it is determined that TA is valid. If the first RSRP value is reduced compared to the second RSRP value by an amount less than or equal to the threshold value, then TA is determined to be valid.

In some embodiments, the power of the reference signal may be attenuated to varying degrees during transmission. For example, if the terminal is far from the network device, the attenuation degree is relatively large and the RSRP value is relatively small. If the terminal is closer to the network device, the attenuation degree is relatively smaller, and the RSRP value is relatively larger. It will be appreciated that if the first RSRP value changes by a larger amount than the second RSRP value, it may be indicated that the distance between the terminal and the network device has changed greatly, and the current TA of the terminal may be invalid. For example, if the first RSRP value is greater than the second RSRP value, it may be stated that the terminal moves from a location relatively far from the network device to a location relatively close to the network device, and the current TA may be invalid and the TA needs to be reduced. For another example, if the first RSRP value is smaller than the second RSRP value, it may be stated that the terminal moves from a location relatively close to the network device to a location relatively far from the network device, and the current TA may be invalid and the TA needs to be increased.

In some embodiments, if the TA is valid, the terminal may send the SRS according to the SRS configuration message, and if the TA is invalid, the terminal may stop sending the SRS.

In some embodiments, the designated cell includes at least one of: the second RSRP value corresponds to the cell; the terminal switches from the RRC connection state to the last service cell before the RRC non-connection state; a cell in which a terminal receives a TA command; the terminal adjusts the cell of the TA by itself; the terminal is currently serving cell.

In some embodiments, the designated cell includes a second RSRP value corresponding cell. That is, the terminal may measure a reference signal of the cell corresponding to the second RSRP value to obtain the first RSRP value. For example, if the cell corresponding to the second RSRP value is cell a, it is assumed that the terminal resides in cell B after cell reselection, and the terminal measures the reference signal of cell a to obtain the first RSRP value instead of measuring the reference signal of cell B to obtain the first RSRP value. For another example, when the cell corresponding to the second RSRP value changes, the cell in which the terminal obtains the first RSRP value also changes correspondingly.

In some embodiments, the specified cell includes a last serving cell before the terminal switches from the RRC connected state to the RRC non-connected state. The terminal may measure a reference RRC non-connected state reference signal of a last serving cell before the terminal switches from an RRC connected state to an RRC non-connected state, to obtain a first RSRP value. For example, when the terminal receives the RRC release message and switches from the RRC connected state to the RRC connected state, the final serving cell is the cell that receives the RRC release message. For another example, assuming that the cell 1 transmits an SRS configuration message to the terminal through an RRC reconfiguration message, the terminal enters the cell 2 through cell handover, and enters an RRC non-connected state in the cell 2, the terminal measures the reference signal of the cell 2 to obtain a first RSRP value, instead of measuring the reference signal of the cell 1 to obtain the first RSRP value.

In some embodiments, the designated cell comprises a cell in which the terminal received the TA command. The TA command may be sent by the network device to the terminal for instructing the terminal to adjust the TA. The terminal may measure a reference signal of a cell receiving the TA command to obtain a first RSRP value. The TA command may include at least one of: TA commands indicated by MAC CE (timing advance command MAC CE), TA commands (timing advance command), absolute TA commands (absolute timing advance command). The TA command indicated by the MAC CE may be understood as a TA command carried by the MAC CE. The TA command differs from the absolute TA command in that the values included in the TA command can be used to adjust the absolute amount of TA. The values included in the absolute TA command may be used to adjust the relative amount of TA. For example, the TA configured in the terminal is TA1, the TA command includes TA2, and TA2 is used to replace TA1, which can be understood as that TA2 is used to adjust the absolute amount of TA 1. For another example, the TA configured in the terminal is TA1, and the absolute TA command includes a parameter X, where the parameter X is used to determine an increment or decrement of TA1, and it is understood that the parameter X is used to adjust the relative amount of TA 1.

In some embodiments, the designated cell comprises a cell in which the terminal self-adjusts the TA. In some cases, the terminal has authority to adjust the TA by itself, i.e. the network device allows the terminal to adjust the TA by itself, or the terminal has capability of adjusting the TA by itself. In some cases, the terminal does not have authority to adjust the TA by itself, i.e. the network device does not allow the terminal to adjust the TA by itself, or the terminal does not have the capability of adjusting the TA by itself. And when the terminal adjusts the TA by itself and measures the reference signal of the cell when the TA is adjusted by itself, a first RSRP value is obtained.

In some embodiments, the specified cell comprises a current serving cell of the terminal. The terminal may measure a reference signal of a current serving cell to obtain a first RSRP value. For example, if the terminal reselects from cell a to cell B, the terminal measures the reference signal of cell B to obtain the first RSRP value instead of measuring the reference signal of cell a to obtain the first RSRP value.

In some embodiments, the second RSRP value includes at least one of: the terminal receives the RSRP value of the district of SRS configuration information in the RRC connection state; the terminal switches from the RRC connection state to the RSRP value of the last service cell before the RRC non-connection state; the terminal receives the RSRP value of the cell of the TA command; the terminal adjusts the RSRP value of the cell of the TA by itself; the RSRP value of the current serving cell of the terminal.

In some embodiments, the second RSRP value includes an RSRP value of a cell in which the terminal receives the SRS configuration information in the RRC connected state. For example, when the terminal receives the SRS configuration information in the RRC connected state, the reference signal of the cell that receives the SRS configuration information is measured, and the measurement result is stored in the terminal, that is, the second RSRP value. For another example, if the designated cell corresponding to the first RSRP value is a cell corresponding to the second RSRP value, the first RSRP value indicates an RSRP value obtained by measuring a reference signal of a cell in which the terminal receives the SRS configuration information in the RRC connected state. That is, when the SRS configuration information is received in the terminal RRC connected state, the second RSRP value is obtained by measuring the reference signal of the cell in which the SRS configuration information is received. After receiving the SRS configuration information in the RRC connected state of the terminal, the terminal may measure the reference signal of the cell that receives the SRS configuration information at any or specified time to obtain the first RSRP value, where the any or specified time may be that the terminal is in the RRC disconnected state.

In some embodiments, the cell in which the terminal receives the SRS configuration information indicates that the terminal receives the SRS configuration in the cell, and the terminal does not enter the RRC non-connected state in the cell. The terminal may measure a reference signal of a cell configured by the terminal to receive the SRS, and obtain a second RSRP value. At this time, assuming that the cell 1 transmits the SRS configuration message to the UE through the RRC reconfiguration message, the UE enters the cell 2 through the cell handover (the cell 2 is the last serving cell of the UE), and then enters the RRC non-connected state in the cell 2, the terminal measures the reference signal of the cell 1 to obtain the second RSRP value, instead of measuring the reference signal of the cell 2 to obtain the second RSRP value.

In some embodiments, the second RSRP value includes an RSRP value of a last serving cell before the terminal switches from the RRC connected state to the RRC non-connected state. For example, when the terminal is switched from the RRC connected state to the RRC disconnected state, the reference signal of the last serving cell before the terminal is switched from the RRC connected state to the RRC disconnected state is measured, and the measurement result is stored in the terminal, that is, the second RSRP value. For another example, if the designated cell corresponding to the first RSRP value is the last serving cell before the terminal is switched from the RRC connected state to the RRC disconnected state, or if the designated cell corresponding to the first RSRP value is the cell corresponding to the second RSRP value, the first RSRP value indicates an RSRP value obtained by measuring the reference signal of the last serving cell before the terminal is switched from the RRC connected state to the RRC disconnected state. That is, when the terminal is switched from the RRC connected state to the RRC disconnected state, the reference signal of the last serving cell before the switch is measured, and a second RSRP value is obtained. And after the terminal is switched to the RRC non-connection state, measuring the reference signal of the last service cell before switching to obtain a first RSRP value.

In some embodiments, the second RSRP value comprises an RSRP value of a cell in which the terminal received the TA command. For example, when the terminal receives the TA command, the reference signal of the cell receiving the TA command is measured, and the measurement result is stored in the terminal, that is, the second RSRP value. For another example, if the designated cell corresponding to the first RSRP value is a cell receiving the TA command, or if the designated cell corresponding to the first RSRP value is a cell corresponding to the second RSRP value, the first RSRP value indicates an RSRP value obtained by measuring a reference signal of the cell receiving the TA command. That is, when the terminal receives the TA command, the cell that received the TA command is measured to obtain the second RSRP value. After receiving the TA command, the cell that received the TA command is measured for a first RSRP value.

In some embodiments, the second RSRP value comprises an RSRP value of a cell of the terminal self-adjusting TA. For example, the terminal can automatically adjust the TA, and can measure the reference signal of the cell of which the terminal automatically adjusts the TA, and save the measurement result in the terminal, that is, the second RSRP value. For another example, if the designated cell corresponding to the first RSRP value is a cell in which the terminal adjusts the TA by itself, or if the designated cell corresponding to the first RSRP value is a cell corresponding to the second RSRP value, the first RSRP value indicates a reference signal for measuring the cell in which the terminal adjusts the TA by itself, and the RSRP value is obtained. That is, when the terminal adjusts the TA by itself, the reference signal of the cell of the TA is measured to obtain the second RSRP value. After the terminal adjusts the TA by itself, or after the terminal adjusts the TA by itself and before the next TA by itself, the reference signal of the cell of the terminal adjusts the TA by itself is measured to obtain the first RSRP value.

In some embodiments, the second RSRP value includes an RSRP value of a current serving cell of the terminal. For example, the terminal measures the reference signal of the current serving cell, and the measurement result is stored in the terminal, that is, the second RSRP value. The current serving cell for determining the second RSRP value may be a current serving cell when the terminal receives the SRS configuration information, may be a current serving cell when information for activating the SRS configuration information is received if the SRS configuration information is preconfigured, may be a current serving cell when transmission of the SRS is started, and the like, and the present disclosure is not limited by the example. If the designated cell corresponding to the first RSRP value is the current serving cell, the current serving cell used for determining the first RSRP value may be the current serving cell after determining the second RSRP value. The current serving cell for determining the first RSRP value and the cell for determining the second RSRP value may be the same or different. For example, if a cell reselection occurs after the determination of the second RSRP value, or the TA is adjusted, the current serving cell for determining the first RSRP value and the cell for determining the second RSRP value may be different.

In some embodiments, if it is determined that the TA where the terminal transmits the SRS is valid, the terminal may continue to transmit the SRS, and if the TA where the terminal transmits the SRS is invalid, the terminal stops transmitting the SRS. The SRS transmitted by the terminal includes at least one of: preconfigured SRS, SRS configuring an effective area. For example, the terminal transmits SRS according to the received SRS configuration information.

In some embodiments, the terminal receiving the SRS configuration information in the RRC connected state includes at least one of: the terminal receives the SRS configuration information through the RRC release message, wherein the SRS configuration information is used for configuring the preconfigured SRS. The terminal receives SRS configuration information through the RRC release message, wherein the SRS configuration information is used for configuring SRS of the effective area. The terminal receives SRS configuration information through the RRC reconfiguration information, wherein the SRS configuration information is used for configuring the preconfigured SRS. The specific implementation manner of receiving SRS configuration information by the terminal in this embodiment may refer to the implementation manner in the embodiments of step S2101 and step S2101, and this disclosure is not repeated here.

In some embodiments, if the SRS is a preconfigured SRS, the terminal may not determine the second RSRP value before receiving the first information or before transmitting the SRS according to the preconfigured SRS. The terminal may determine the second RSRP value when the first information is received or when the SRS transmission according to the preconfigured SRS starts.

In some embodiments, if the SRS is a preconfigured SRS, the terminal may not evaluate the relationship between the amount of change between the first RSRP value and the second RSRP value and the threshold value before receiving the first information or before transmitting the SRS according to the preconfigured SRS. Upon receiving the first information, or upon starting to transmit SRS according to the preconfigured SRS, the terminal may evaluate a relationship of a variation between the first RSRP value and the second RSRP value to a threshold. After receiving the first information, or after starting to transmit SRS according to the preconfigured SRS, the terminal may continue to evaluate the relationship of the amount of change between the first RSRP value and the second RSRP value to the threshold.

Step S2104, the terminal adjusts TA, measures the reference signal of the current serving cell to obtain a third RSRP value, and updates the second RSRP value to the third RSRP value.

In some embodiments, if the terminal performs cell reselection and adjusts TA by itself, the reference signal of the current serving cell may be measured to obtain an RSRP value, which is referred to as a third RSRP value. The current serving cell is the current serving cell when TA is adjusted by itself. The second RSRP value may be updated to a third RSRP value.

In some embodiments, if the terminal receives the TA command and adjusts the TA according to the TA command, the reference signal of the current serving cell may be measured to obtain a third RSRP value, and the second RSRP value is updated to the third RSRP value. The current serving cell may be a serving cell that receives a TA command. For example, the second RSRP value is an RSRP value obtained by the terminal measuring the reference signal of the last serving cell before entering the RRC inactive state, and when the TA command is received, the second RSRP value may be updated to an RSRP value obtained by the terminal measuring the reference signal of the cell receiving the TA command from the RSRP value obtained by the terminal measuring the reference signal of the last serving cell before entering the RRC inactive state.

In some embodiments, if the terminal performs cell reselection and automatically adjusts TA, the reference signal of the current serving cell may be measured to obtain a third RSRP value, and the second RSRP value is updated to the measured RSRP value (third RSRP value). The current serving cell may be a serving cell in which the terminal adjusts the TA by itself. For example, the second RSRP value is an RSRP value obtained by the terminal measuring the reference signal of the last serving cell before entering the RRC inactive state, and after the TA is automatically adjusted, the second RSRP value may be updated to an RSRP value obtained by the terminal measuring the reference signal of the last serving cell before entering the RRC inactive state.

In some embodiments, when the terminal determines that the TA is valid according to the received SRS configuration information and in response to the change amount of the first RSRP value compared with the second RSRP value being less than or equal to the threshold, and in the process of sending the SRS to the network device, if the terminal performs cell reselection and adjusts the TA by itself, the second RSRP value may be updated, so as to achieve that a cell corresponding to the second RSRP value and a designated cell corresponding to the first RSRP value are the same cell as much as possible, so that the network device locates the terminal more accurately.

In some embodiments, if the SRS is a preconfigured SRS, the terminal may not update the second RSRP value before the first information is received or before the SRS is transmitted according to the preconfigured SRS. The terminal may update the second RSRP value when the first information is received or when the SRS transmission according to the preconfigured SRS is started.

In step S2105, the network apparatus 102 transmits the second information in the process of transmitting the first information to the terminal 101.

In some embodiments, the terminal 101 receives the second information sent by the network device 102 in the process of receiving the first information sent by the network device 102.

In some embodiments, if the SRS is a preconfigured SRS, the network device 102 may send the first information to the terminal 101. The first information is used to activate the preconfigured SRS.

In some embodiments, the network device 102 may send the second information during the process of sending the first information to the terminal 101. The second information is used to indicate at least one of the following TA commands: a TA command indicated by the media access control unit; a TA command; absolute TA command. For example, the terminal receives the first information, and may activate the preconfigured SRS according to the first information. And the terminal receives the second information and can adjust the TA according to the second information. That is, the terminal may adjust the TA and start transmitting the SRS according to the preconfigured SRS. To facilitate and adjust the TA in the field to avoid that the TA is invalid when starting to transmit SRS.

In some embodiments, if the SRS is a preconfigured SRS, before transmitting the first information, or before transmitting the SRS according to the preconfigured SRS, the network device performs at least one of: the network equipment does not send rsrp-threshold configuration information to the terminal, wherein the rsrp-threshold configuration information is used for configuring rsrp-threshold; the network device does not send TA timer configuration information to the terminal, the TA timer configuration information being used to configure a TA timer associated with the preconfigured SRS.

In some embodiments, if the SRS is a preconfigured SRS, the terminal 101 receives the first information.

In some embodiments, if the SRS is a preconfigured SRS, before receiving the first information, the terminal performs at least one of: not receiving rsrp-threshold configuration information, which is used for configuring rsrp-threshold; not receiving TA timer configuration information for configuring a TA timer associated with the preconfigured SRS; not starting a TA timer associated with the pre-configured SRS; the TA is not automatically adjusted when the cell reselection occurs; the RSRP value of the last serving cell before switching from the RRC connection state to the RRC non-connection state is not saved; the RSRP value of the district in which the terminal receives the SRS configuration information in the RRC connection state is not saved; not evaluating a relationship of a variation between the first RSRP value and the second RSRP value to a threshold; cell reselection is performed, TA is automatically adjusted, and the second RSRP value is not updated to be the RSRP value of the cell currently serving; receiving second information, not storing the RSRP value of the current serving cell or not updating the stored RSRP value, wherein the second information is used for indicating at least one of the following TA commands: a TA command indicated by the media access control unit; a TA command; absolute TA command.

In some embodiments, the network device does not send rsrp-threshold configuration information to the terminal until the first information is received, or until the first information is received but the SRS is not transmitted, i.e., the SRS is transmitted. The terminal does not receive rsrp-threshold configuration information. That is, the network device may not configure rsrp-threshold for the terminal.

In some embodiments, the network device does not send TA timer configuration information to the terminal until the first information is received, or until the first information is received but the SRS is not transmitted, i.e., the SRS is transmitted. The terminal does not receive TA timer configuration information. That is, the network device may not configure the terminal with a TA timer associated with the pre-configured SRS.

In some embodiments, the terminal may not start a TA timer associated with the preconfigured SRS before receiving the first information or before receiving the first information but not transmitting the SRS, i.e. transmitting the SRS. It can be appreciated that when the TA timer associated with the preconfigured SRS is started, the TA will determine that the TA is invalid because the TA timer is stopped. Therefore, for the preconfigured SRS, the TA timer may be temporarily not started when the first information is not received.

In some embodiments, the terminal may not adjust the TA by itself when cell reselection occurs before receiving the first information, or before receiving the first information but not transmitting the SRS, i.e., transmitting the SRS.

In some embodiments, before receiving the first information, or before receiving the first information but not transmitting the SRS, i.e. transmitting the SRS, the terminal may save the RSRP value of the last serving cell before switching from the RRC connected state to the RRC non-connected state; the RSRP value of the cell in which the terminal receives the SRS configuration information in the RRC connected state is not saved. For example, the RSRP value of the last serving cell before the terminal is switched from the RRC connected state to the RRC non-connected state is not measured, or the RSRP value of the cell in which the terminal receives the SRS configuration information in the RRC connected state is not measured.

In some embodiments, the terminal may not evaluate the relationship of the amount of change between the first RSRP value and the second RSRP value to the threshold value before receiving the first information, or before receiving the first information but not transmitting the SRS, i.e., transmitting the SRS. It is understood that evaluating the relationship of the amount of change between the first RSRP value and the second RSRP value to the threshold is used to determine whether the TA is valid, which may determine whether to transmit the SRS. If the terminal does not receive the first information or before the SRS is transmitted, it may not be necessary to evaluate a relationship between the amount of change between the first RSRP value and the second RSRP value and the threshold value.

In some embodiments, before the first information is received, or before the first information is received but the SRS is not transmitted, that is, before the SRS is transmitted, if the terminal performs cell reselection and adjusts the TA by itself, the terminal may not update the second RSRP value to be the RSRP value of the currently serving cell.

In some embodiments, the terminal may receive second information indicating at least one of the following TA commands: a TA command indicated by the media access control unit; a TA command; absolute TA command.

In some embodiments, the terminal may not measure the RSRP value of the reference signal of the current serving cell as the second RSRP value if the second information is received before the first information is received or before the first information is received but the SRS is not transmitted, i.e., before the SRS is transmitted. Wherein the current serving cell may be a cell that receives the second information.

In some embodiments, if the SRS is a preconfigured SRS, upon receiving the first information, or upon transmitting the SRS according to the preconfigured SRS, the network device performs at least one of: the network equipment sends rsrp-threshold configuration information to the terminal, wherein the rsrp-threshold configuration information is used for configuring rsrp-threshold; the network device sends TA timer configuration information to the terminal, where the TA timer configuration information is used to configure a TA timer associated with the preconfigured SRS.

In some embodiments, if the SRS is a preconfigured SRS, upon receiving the first information or upon transmitting the SRS according to the preconfigured SRS, the terminal performs at least one of: receiving rsrp-threshold configuration information, wherein the rsrp-threshold configuration information is used for configuring rsrp-threshold; receiving TA timer configuration information, wherein the TA timer configuration information is used for configuring a TA timer associated with the preconfigured SRS; receiving second information sent by the network device in the process of receiving the first information sent by the network device, wherein the second information is used for indicating at least one of the following TA commands: a TA command indicated by the media access control unit; a TA command; an absolute TA command; starting a TA timer associated with the pre-configured SRS; measuring the RSRP value of the reference signal of the current serving cell as a second RSRP value; the relationship of the amount of change between the first RSRP value and the second RSRP value to the threshold is evaluated.

In some embodiments, upon receiving the first information, or upon starting to transmit SRS, the network device transmits rsrp-threshold configuration information to the terminal, the rsrp-threshold configuration information being used to configure rsrp-threshold. The terminal receives rsrp-threshold configuration information. That is, the network device configures rsrp-threshold for the terminal.

In some embodiments, upon receiving the first information, or upon starting to transmit the SRS, the network device transmits TA timer configuration information to the terminal, the TA timer configuration information being used to configure a TA timer associated with the preconfigured SRS. The terminal receives the TA timer configuration information. That is, the network device configures the terminal with a TA timer associated with the preconfigured SRS.

In some embodiments, when the first information is received, or when the SRS starts to be transmitted, the terminal may receive the second information transmitted by the network device in the process of receiving the first information transmitted by the network device.

In some embodiments, the network device transmits the second information to both network devices in the process of transmitting the first information to the terminal. That is, when the network device transmits the first information to the terminal, the second information is transmitted to the terminal regardless of whether the terminal has the right to adjust the TA by itself. So that the terminal adjusts the TA to a valid TA before starting to transmit the SRS. It is to be appreciated that even though the TA is a valid TA, the TA can be adjusted.

In some embodiments, upon receiving the first information, or upon starting transmission of the SRS, a TA timer associated with the preconfigured SRS is started. The terminal may start a TA timer associated with the preconfigured SRS when receiving the first information or when starting to transmit the SRS. In order to determine that the TA timer is in an operational state.

In some embodiments, upon receiving the first information, or upon starting transmission of the SRS, the terminal may measure an RSRP value of a reference signal of the current serving cell as the second RSRP value. The current serving cell may be a cell that receives the first information, or a cell that starts transmitting the SRS. The second RSRP value may be obtained by measuring a reference signal of a cell receiving the first information when the first information is received. Alternatively, the second RSRP value may be obtained by measuring a reference signal of a cell from which SRS transmission starts when SRS transmission starts.

In some embodiments, the relationship of the amount of change between the first RSRP value and the second RSRP value to the threshold is evaluated upon receiving the first information, or upon starting to transmit SRS. For example, if the amount of change between the first RSRP value and the second RSRP value is less than or equal to the threshold, and SRS transmission is continued. It can be appreciated that after receiving the first information, or after starting to transmit SRS, the terminal can continue to evaluate the relationship of the amount of change between the first RSRP value and the second RSRP value to the threshold.

In some embodiments, after the terminal starts the TA timer associated with the preconfigured SRS, the terminal performs at least one of: self-adjusting TA when cell reselection occurs; the terminal reselects the cell, adjusts the TA automatically, and updates the second RSRP value as the RSRP value of the current resident cell; and receiving the second information, storing the RSRP value of the current serving cell, and/or updating the stored RSRP value.

In some embodiments, after receiving the first information, or after starting to transmit SRS and having started a TA timer associated with the preconfigured SRS, the terminal may adjust the TA itself when a cell reselection occurs.

In some embodiments, after receiving the first information, or after starting to transmit SRS and having started a TA timer associated with the preconfigured SRS, the terminal may update the second RSRP value to the RSRP value of the current serving cell when cell reselection occurs and the TA is adjusted by itself. The current serving cell may be a cell that adjusts the TA by itself.

In some embodiments, after receiving the first information, or after starting to transmit SRS and having started a TA timer associated with the preconfigured SRS, the terminal may receive the second information, save the RSRP value of the currently serving cell, and/or update the saved RSRP value. The terminal receives the second information, and can store the RSRP value of the cell receiving the second information, that is, measure the reference signal of the cell receiving the second information, to obtain the second RSRP value. Or, the terminal may update the existing second RSRP value, and update the RSRP value obtained for measuring the reference signal of the cell that receives the second information.

In step S2106, the terminal 101 transmits the SRS to the network apparatus 102.

In some embodiments, network device 102 receives the SRS transmitted by terminal 101.

In some embodiments, SRS is used for positioning.

In some embodiments, the terminal may transmit an SRS to the network device if the TA is determined to be valid. And the network equipment receives the SRS and can position the terminal according to the SRS.

In some embodiments, the names of the first information and the second information are not limited. The first information may be, for example, "activation information", "indication information", or the like. The second information may be, for example, "TA instruction", "indication information", or the like.

The communication method according to the embodiment of the present disclosure may include at least one of step S2101 to step S2106. For example, step S2103 may be implemented as an independent embodiment, step S2104 may be implemented as an independent embodiment, step S2103 and step S2104 may be implemented as independent embodiments, and step S2103, step S2104 and step S2105 may be implemented as independent embodiments, but are not limited thereto.

In some embodiments, step S2102, step S2103 may be performed in exchange for or concurrently.

In some embodiments, step S2101, step S2102, step S2104, step S2105, and step S2106 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

In some embodiments, step S2101, step S2102, step S2103, step S2105, and step S2106 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

In some embodiments, reference may be made to alternative implementations described before or after the description corresponding to fig. 2.

Fig. 3a is a flow chart of a communication method shown in accordance with an embodiment of the present disclosure. As shown in fig. 3a, an embodiment of the present disclosure relates to a communication method, performed by a terminal 101, the method comprising:

step S3101, SRS configuration information is acquired.

Alternative implementations of step S3101 may refer to alternative implementations of step S2101 of fig. 2, and other relevant parts of the embodiment related to fig. 2, which are not described herein.

In some embodiments, terminal 101 receives SRS configuration information transmitted by network device 102, but is not limited thereto, and SRS configuration information transmitted by other bodies may also be received.

In some embodiments, terminal 101 obtains SRS configuration information specified by the protocol.

In some embodiments, terminal 101 obtains SRS configuration information from a higher layer(s).

In some embodiments, terminal 101 processes to obtain SRS configuration information.

In some embodiments, step S3101 is omitted, and terminal 101 autonomously implements the function indicated by the SRS configuration information, or the above-described function is default or default.

In step S3102, it is determined that the timer of the SRS-associated TA is in an operation state.

Alternative implementations of step S3102 may refer to alternative implementations of step S2102 in fig. 2, and other relevant parts in the embodiment related to fig. 2, which are not described herein.

In some embodiments, the timer of the SRS-associated TA being in an active state may be terminal-determined.

In step S3103, the amount of change of the first RSRP value compared to the second RSRP value is less than or equal to the threshold value, and it is determined that the TA at which the terminal transmits the SRS is valid. Wherein the terminal is in an RRC non-connected state. The SRS includes at least one of: preconfigured SRS, SRS configuring an effective area.

Alternative implementations of step S3103 may refer to alternative implementations of step S2103 of fig. 2, and other relevant parts of the embodiment related to fig. 2, which are not described herein.

In some embodiments, the TA effective for the terminal to transmit SRS is determined based on the amount of change in the first RSRP value compared to the second RSRP value being less than or equal to a threshold.

Step S3104, the terminal adjusts TA by itself, measures the reference signal of the current serving cell to obtain a third RSRP value, and updates the second RSRP value to the third RSRP value (measured RSRP value).

Alternative implementations of step S3104 may refer to alternative implementations of step S2104 of fig. 2, and other relevant parts of the embodiment related to fig. 2, which are not described herein.

In some embodiments, the second RSRP value is obtained by measuring the reference signal of the current serving cell based on the terminal performing cell reselection and adjusting TA by itself, and updated.

In step S3105, the second information is acquired in the process of acquiring the first information.

Alternative implementations of step S3105 may refer to alternative implementations of step S2105 of fig. 2, and other relevant parts of the embodiment related to fig. 2, which are not described herein.

In some embodiments, the terminal 101 receives the second information transmitted by the network device 102 in the process of receiving the first information transmitted by the network device 102, but is not limited thereto, and may also receive the second information transmitted by other subjects in the process of receiving the first information transmitted by other subjects.

In some embodiments, the terminal 101 obtains the second information specified by the protocol in the process of obtaining the first information specified by the protocol.

In some embodiments, the terminal 101 acquires the second information from a higher layer(s) in the process of acquiring the first information from the higher layer(s).

In some embodiments, the second information is obtained during processing by the terminal 101 to obtain the first information.

In step S3106, SRS is transmitted.

Alternative implementations of step S3106 may refer to alternative implementations of step S2106 of fig. 2, and other relevant parts of the embodiment related to fig. 2, which are not described herein.

In some embodiments, terminal 101 transmits SRS to network device 102, but is not limited thereto, and may also transmit SRS to other principals.

The communication method according to the embodiment of the present disclosure may include at least one of step S3101 to step S3106. For example, step S3103 may be implemented as a separate embodiment, step S3104 may be implemented as a separate embodiment, step S3103 and step S3104 may be implemented as separate embodiments, and step S3103, step S3104 and step S3106 may be implemented as separate embodiments, but are not limited thereto.

In some embodiments, step S3102, step S3103 may be performed in exchange for one another or simultaneously.

In some embodiments, step S3101, step S3102, step S3104, step S3105, and step S3106 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

In some embodiments, steps S3101, S3102, S3103, S3105, and S3106 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

In some embodiments, reference may be made to other alternative implementations described before or after the description corresponding to fig. 3 a.

Fig. 3b is a flow chart of a communication method shown in accordance with an embodiment of the present disclosure. As shown in fig. 3b, an embodiment of the present disclosure relates to a communication method, performed by a terminal 101, the method comprising:

step S3201, SRS configuration information is acquired.

Alternative implementations of step S3201 may refer to alternative implementations of step S2101 of fig. 2 and step S3101 of fig. 3a, and other relevant parts in the embodiments related to fig. 2 and 3a, which are not described herein.

In some embodiments, step S3201 is omitted, and terminal 101 autonomously implements the function indicated by the SRS configuration information, or the above-described function is default or default.

In step S3202, the variation of the first RSRP value compared with the second RSRP value is less than or equal to the threshold, and it is determined that the TA of the terminal transmitting the SRS is valid. Wherein the terminal is in an RRC non-connected state. The SRS includes at least one of: preconfigured SRS, SRS configuring an effective area.

Alternative implementations of step S3202 may refer to alternative implementations of step S2103 of fig. 2 and step S3103 of fig. 3a, and other relevant parts in the embodiments related to fig. 2 and 3a, which are not described herein.

Step S3203, SRS is transmitted.

Alternative implementations of step S3203 may refer to alternative implementations of step S2106 of fig. 2 and step S3106 of fig. 3a, and other relevant parts in the embodiments related to fig. 2 and 3a, which are not described herein.

Fig. 3c is a flow chart of a communication method shown in accordance with an embodiment of the present disclosure. As shown in fig. 3c, an embodiment of the present disclosure relates to a communication method, performed by a terminal 101, the method comprising:

in step S3301, it is determined that the timer of the SRS-associated TA is in an operation state.

Alternative implementations of step S3301 may refer to alternative implementations of step S2102 in fig. 2 and step S3301 in fig. 3a, and other relevant parts in the embodiments related to fig. 2 and 3a, which are not described herein.

In step S3302, the variation of the first RSRP value compared with the second RSRP value is less than or equal to the threshold, and it is determined that the TA of the terminal transmitting the SRS is valid. Wherein the terminal is in an RRC non-connected state. The SRS includes at least one of: preconfigured SRS, SRS configuring an effective area.

Alternative implementations of step S3302 may refer to alternative implementations of step S2103 of fig. 2 and step S3103 of fig. 3a, and other relevant parts in the embodiments related to fig. 2 and 3a, which are not described herein.

Step S3303, SRS is transmitted.

Alternative implementations of step S3303 may refer to alternative implementations of step S2106 of fig. 2 and step S3106 of fig. 3a, and other relevant parts in the embodiments related to fig. 2 and 3a, which are not described herein.

Fig. 3d is a flow chart of a communication method shown in accordance with an embodiment of the present disclosure. As shown in fig. 3d, an embodiment of the present disclosure relates to a communication method, performed by a terminal 101, the method comprising:

in step S3401, the variation of the first RSRP value compared with the second RSRP value is less than or equal to the threshold value, and it is determined that the TA of the terminal transmitting the SRS is valid. Wherein the terminal is in an RRC non-connected state. The SRS includes at least one of: preconfigured SRS, SRS configuring an effective area.

Alternative implementations of step S3401 may refer to alternative implementations of step S2103 in fig. 2, and other relevant parts in the embodiment related to fig. 2, which are not described herein.

Step S3402, the terminal adjusts TA, measures the reference signal of the current service cell to obtain a third RSRP value, and updates the second RSRP value to the third RSRP value.

Alternative implementations of step S3402 may refer to alternative implementations of step S2104 in fig. 2, and other relevant parts in the embodiment related to fig. 2, which are not described herein.

Fig. 3e is a flow chart of a communication method shown in accordance with an embodiment of the present disclosure. As shown in fig. 3e, an embodiment of the present disclosure relates to a communication method, performed by a terminal 101, the method comprising:

in step S3501, the variation of the first RSRP value from the second RSRP value is less than or equal to the threshold, and it is determined that the TA of the terminal transmitting the SRS is valid. Wherein the terminal is in an RRC non-connected state. The SRS includes at least one of: preconfigured SRS, SRS configuring an effective area.

Alternative implementations of step S3501 may refer to alternative implementations of step S2103 in fig. 2, and other relevant parts in the embodiment related to fig. 2, which are not described herein.

In some embodiments, the designated cell includes at least one of: the second RSRP value corresponds to the cell. The terminal switches from the RRC connected state to the last serving cell before the RRC non-connected state. And the terminal receives the cell of the TA command. The terminal adjusts the TA cell itself. The terminal is currently serving cell.

In some embodiments, the second RSRP value includes at least one of: the terminal receives the RSRP value of the cell of the SRS configuration information in the RRC connected state. The terminal switches from the RRC connected state to the RSRP value of the last serving cell before the RRC non-connected state. The terminal receives the RSRP value of the TA commanded cell. The terminal adjusts the RSRP value of the TA's cell itself. The RSRP value of the current serving cell of the terminal.

In some embodiments, the method further comprises at least one of: the terminal receives the SRS configuration information through the RRC release message, wherein the SRS configuration information is used for configuring the preconfigured SRS. The terminal receives SRS configuration information through the RRC release message, wherein the SRS configuration information is used for configuring SRS of the effective area. The terminal receives SRS configuration information through the RRC reconfiguration information, wherein the SRS configuration information is used for configuring the preconfigured SRS.

In some embodiments, the method further comprises: and the terminal performs cell reselection, adjusts TA by itself, measures the reference signal of the current service cell to obtain RSRP, and updates the stored second RSRP value into the measured RSRP value.

In some embodiments, the method further comprises: and determining that a timer of the TA associated with the uplink positioning reference signal is in an operating state.

In some embodiments, the SRS is a preconfigured SRS, the first information is used to activate the preconfigured SRS before receiving the first information, and/or the method further comprises at least one of: the TA timer associated with the preconfigured SRS is not started. The TA is not self-adjusted when cell reselection occurs. The RSRP value of the last serving cell before the terminal switches from the RRC connected state to the RRC disconnected state is not saved. The RSRP value of the cell in which the terminal receives the SRS configuration information in the RRC connected state is not saved. The relationship of the amount of change between the first RSRP value and the second RSRP value to the threshold is not evaluated. The terminal performs cell reselection, adjusts the TA by itself, and does not update the second RSRP value to the RSRP value of the currently serving cell. Receiving second information, not storing the RSRP value of the current serving cell or not updating the stored RSRP value, wherein the second information is used for indicating at least one of the following TA commands: a TA command indicated by the medium access control unit. TA command. Absolute TA command.

In some embodiments, the SRS is a preconfigured SRS, the first information is used to activate the preconfigured SRS when the first information is received, and/or the method further comprises at least one of: receiving second information sent by the network device in the process of receiving the first information sent by the network device, wherein the second information is used for indicating at least one of the following TA commands: a TA command indicated by the medium access control unit. TA command. Absolute TA command. A TA timer associated with the preconfigured SRS is started. The RSRP value of the reference signal of the current serving cell is measured as a second RSRP value. The amount of change between the first RSRP value and the second RSRP value is evaluated in relation to a threshold value.

In some embodiments, after starting the TA timer associated with the preconfigured SRS, the method further comprises at least one of: the TA is self-adjusted when cell reselection occurs. The terminal performs cell reselection, adjusts the TA by itself, and updates the second RSRP value to be the RSRP value of the current serving cell. And receiving the second information, storing the RSRP value of the current serving cell, and/or updating the stored RSRP value.

Fig. 4a is a flow chart of a communication method shown in accordance with an embodiment of the present disclosure. As shown in fig. 4a, an embodiment of the present disclosure relates to a communication method, the method including:

step S4101, SRS configuration information is transmitted.

Alternative implementations of step S4101 may refer to alternative implementations of step S2101 of fig. 2, and other relevant parts in the embodiment related to fig. 2, which are not described herein.

In some embodiments, terminal 101 transmits SRS configuration information to network device 102, but is not limited thereto, and SRS configuration information may also be transmitted to other subjects.

In step S4102, the second information is transmitted during the process of transmitting the first information.

Alternative implementations of step S4102 may be referred to as alternative implementations of step S2105 of fig. 2, and other relevant parts of the embodiment related to fig. 2 are not described herein.

In some embodiments, the terminal 101 transmits the second information in the process of transmitting the first information to the network device 102, but is not limited thereto, and may also transmit the second information in the process of transmitting the first information to other subjects.

Step S4103, SRS is acquired.

Alternative implementations of step S4103 may refer to alternative implementations of step S2106 of fig. 2, and other relevant parts in the embodiment related to fig. 2, which are not described herein.

In some embodiments, the network device 102 receives the SRS transmitted by the terminal 101, but is not limited thereto, and may also receive the SRS transmitted by other bodies.

In some embodiments, network device 102 acquires SRS specified by a protocol.

In some embodiments, the network device 102 acquires SRS from a higher layer(s).

In some embodiments, the network device 102 processes to obtain SRS.

In some embodiments, step S4103 is omitted, and network device 102 autonomously implements the functionality indicated by the SRS, or the functionality described above is default or defaults.

Fig. 4b is a flow chart of a communication method shown in accordance with an embodiment of the present disclosure. As shown in fig. 4b, an embodiment of the present disclosure relates to a communication method, the method including:

in step S4201, the second information is transmitted during the process of transmitting the first information.

Alternative implementations of step S4201 may refer to alternative implementations of step S2105 of fig. 2, and other relevant parts of the embodiment related to fig. 2, which are not described herein.

Fig. 5 is a flow chart of a communication method shown in accordance with an embodiment of the present disclosure. As shown in fig. 5, an embodiment of the present disclosure relates to a communication method, the method including:

in step S5101, the terminal 101 determines that the TA at which the terminal 101 transmits the SRS is valid, in which the first RSRP value is less than or equal to the threshold value in comparison with the second RSRP value. Wherein the terminal is in an RRC non-connected state. The SRS includes at least one of: preconfigured SRS, SRS configuring an effective area.

Alternative implementations of step S5101 may refer to S2103 of fig. 2, step S3103 of fig. 3a, and other relevant parts in the embodiments related to fig. 2 and 3a, which are not described herein.

In some embodiments, the methods described above may include the methods described above in embodiments related to the communication system 100, the terminal 101, the network device 102, and so on, which are not described herein.

In step S5102, the SRS is a preconfigured SRS, and the network device 102 transmits the second information in the process of transmitting the first information to the terminal 101.

Alternative implementations of step S5102 may refer to S2105 of fig. 2, step S3105 of fig. 3a, and other relevant parts in the embodiments related to fig. 2 and 3a, which are not described herein.

The embodiment of the disclosure also provides a communication method, which comprises the following steps:

in some embodiments, the SRS includes one of:

pre-configuring SRS; wherein the preconfigured SRS may also contain a validity area. The preconfigured SRS means that when a User Equipment (UE) receives an SRS configuration, the UE does not transmit the SRS according to the SRS configuration, but transmits the SRS according to the preconfigured SRS configuration after receiving an indication of the network.

In some embodiments, the UE may also be a terminal.

In some embodiments, if the network allows the UE to automatically adjust the TA, it includes one of:

a. if the UE receives the SRS configuration (pre-configuration SRS or SRS configuring the effective area), the UE stores the RSRP value of the received SRS configuration cell, wherein the RSRP value is obtained by measuring SSB by the UE.

In some embodiments, the SRS configuration may be SRS configuration information for configuring the SRS.

b. If the SRS received by the UE in the connected state is configured to be preconfigured, or the UE receives the preconfigured SRS through the RRC reconfiguration message, the UE saves the RSRP value of last serving cell or the RSRP value of the cell receiving the RRC release message.

In some embodiments, the UE-saved RSRP value of last serving cell or the UE-saved RSRP value of the cell receiving the RRC release message may be the second RSRP value.

c. If the UE is already configured with SRS configuration, if the UE performs cell reselection and automatically adjusts TA, updating the saved RSRP value to be the RSRP value of the current cell, wherein the RSRP value of the current cell is obtained by measuring SSB of the current cell by the UE.

In some embodiments, the current cell may be a current serving cell.

And d, the UE measures and stores the SSB of the cell corresponding to the RSRP value to obtain the RSRP value, compares the RSRP value obtained by measurement with the stored RSRP value, and considers TA to be effective if the RSRP value obtained by measurement is increased or decreased by not more than a threshold value and the corresponding TA timer is still running.

In some embodiments, the threshold value may be a threshold value.

In some embodiments, if the network does not allow the UE to automatically adjust the TA, or the UE maintains the TA from last serving cell, one of the following is included:

e. If the UE receives the SRS configuration (preconfigured SRS or SRS configuring the active area), the UE saves last serving cell the RSRP value or the RSRP value of the cell receiving the RRC release message. The RSRP value is obtained by measuring SSB by UE;

f. if the SRS received by the UE in the connected state is configured to be preconfigured, or the UE receives the preconfigured SRS through the RRC reconfiguration message, the UE stores the RSRP value of the cell in which the SRS is configured.

And g, the UE measures and stores the SSB of the cell corresponding to the RSRP value to obtain the RSRP value, compares the RSRP value obtained by the measurement with the stored RSRP value, and considers TA to be effective if the RSRP value obtained by the measurement is increased or decreased by not more than a threshold value and the corresponding TA timer is still running.

The UE measures last serving cell the RSRP value, compares the measured RSRP value with the stored RSRP value, and considers the TA to be valid if the measured RSRP value increases or decreases by not more than a threshold value and the corresponding TA timer is still running.

i. if the SRS received by the UE is configured as the pre-configured SRS, the UE does not start a TA timer associated with the pre-configured SRS before an activated pre-configured indication sent by the network is received or the UE starts transmitting the pre-configured SRS. The UE does not automatically adjust the TA when cell reselection occurs. The UE does not hold the RSRP of last serving cell or the RSRP value of the received configured cell. The UE does not evaluate the change in RSRP value versus the threshold value. The UE receives Timing Advance Command MAC CE or Timing Advance Command or Absolute Timing Advance Command, and the UE does not save the RSRP value of the current cell or update the RSRP value.

j. When the UE receives an activated pre-configured SRS indication sent by the network or starts to transmit the pre-configured SRS configuration. And the UE receives a TA command sent by the network in the process of receiving the activation preconfigured SRS indication sent by the network. The UE starts a TA timer associated with the preconfigured SRS. The UE saves the RSRP value of the cell that received the activation indication, or the RSRP value of the cell when the UE starts transmitting SRS. If the UE performs cell reselection and automatically adjusts the TA, updating the stored RSRP value to be the RSRP value of the current cell, wherein the RSRP value of the current cell is obtained by measuring the SSB of the current cell by the UE. If the UE receives Timing Advance Command MAC CE, timing Advance Command or Absolute Timing Advance Command, the UE updates the stored RSRP value to the RSRP value of the current cell, where the RSRP value of the current cell is obtained by the UE measuring the SSB of the current cell. The UE measures and stores the RSRP value corresponding to the SSB of the cell to obtain the RSRP value, compares the RSRP value obtained by the measurement with the stored RSRP value, and considers TA to be effective if the RSRP value obtained by the measurement is increased or decreased by not more than a threshold value and the corresponding TA timer is still running.

In some embodiments, if the network does not allow the UE to automatically adjust the TA, one of the following is included:

k. If the SRS received by the UE is configured as the pre-configured SRS, the UE does not start a TA timer associated with the pre-configured SRS before an activated pre-configured indication sent by the network is received or the UE starts transmitting the pre-configured SRS. The UE does not hold the RSRP of last serving cell or the RSRP value of the received configured cell. The UE does not evaluate the change in RSRP value versus the threshold value. The UE receives Timing Advance Command MAC CE or Timing Advance Command or Absolute Timing Advance Command, and the UE does not save the RSRP value of the current cell or update the RSRP value.

And/when the UE receives an activated pre-configuration SRS indication sent by the network or starts to transmit the pre-configuration SRS configuration. And the UE receives a TA command sent by the network in the process of receiving the activated pre-configured SRS sent by the network. The UE starts a TA timer associated with the preconfigured SRS. The UE saves the RSRP value of the cell that received the activation indication, or the RSRP value of the cell when the UE starts transmitting SRS. If the UE receives Timing Advance Command MAC CE or Timing Advance Command or Absolute Timing Advance Command. The UE updates the stored RSRP value to the RSRP value of the current cell, and the RSRP value of the current cell is obtained by measuring the SSB of the current cell by the UE. The UE measures and stores the RSRP value corresponding to the SSB of the cell to obtain the RSRP value, compares the RSRP value obtained by the measurement with the stored RSRP value, and considers TA to be effective if the RSRP value obtained by the measurement is increased or decreased by not more than a threshold value and the corresponding TA timer is still running.

The embodiments of the present disclosure also provide an apparatus for implementing any of the above methods, for example, an apparatus is provided, where the apparatus includes a unit or a module for implementing each step performed by the terminal in any of the above methods. For another example, another apparatus is also proposed, which includes a unit or module configured to implement steps performed by a network device (e.g., an access network device, a core network function node, a core network device, etc.) in any of the above methods.

It should be understood that the division of each unit or module in the above apparatus is merely a division of a logic function, and may be fully or partially integrated into one physical entity or may be physically separated when actually implemented. Furthermore, units or modules in the apparatus may be implemented in the form of processor-invoked software: the device comprises, for example, a processor, the processor being connected to a memory, the memory having instructions stored therein, the processor invoking the instructions stored in the memory to perform any of the methods or to perform the functions of the units or modules of the device, wherein the processor is, for example, a general purpose processor, such as a central processing unit (Central Processing Unit, CPU) or microprocessor, and the memory is internal to the device or external to the device. Alternatively, the units or modules in the apparatus may be implemented in the form of hardware circuits, and part or all of the functions of the units or modules may be implemented by designing hardware circuits, which may be understood as one or more processors; for example, in one implementation, the hardware circuit is an application-specific integrated circuit (ASIC), and the functions of some or all of the units or modules are implemented by designing the logic relationships of elements in the circuit; for another example, in another implementation, the above hardware circuit may be implemented by a programmable logic device (programmable logic device, PLD), for example, a field programmable gate array (Field Programmable Gate Array, FPGA), which may include a large number of logic gates, and the connection relationship between the logic gates is configured by a configuration file, so as to implement the functions of some or all of the above units or modules. All units or modules of the above device may be realized in the form of invoking software by a processor, or in the form of hardware circuits, or in part in the form of invoking software by a processor, and in the rest in the form of hardware circuits.

In the disclosed embodiments, the processor is a circuit with signal processing capabilities, and in one implementation, the processor may be a circuit with instruction reading and running capabilities, such as a central processing unit (Central Processing Unit, CPU), microprocessor, graphics processor (graphics processing unit, GPU) (which may be understood as a microprocessor), or digital signal processor (digital signal processor, DSP), etc.; in another implementation, the processor may implement a function through a logical relationship of hardware circuits that are fixed or reconfigurable, e.g., a hardware circuit implemented as an application-specific integrated circuit (ASIC) or a programmable logic device (programmable logic device, PLD), such as an FPGA. In the reconfigurable hardware circuit, the processor loads the configuration document, and the process of implementing the configuration of the hardware circuit may be understood as a process of loading instructions by the processor to implement the functions of some or all of the above units or modules. Furthermore, hardware circuits designed for artificial intelligence may be used, which may be understood as ASICs, such as neural network processing units (Neural Network Processing Unit, NPU), tensor processing units (Tensor Processing Unit, TPU), deep learning processing units (Deep learning Processing Unit, DPU), etc.

Fig. 6a is a schematic structural diagram of a terminal according to an embodiment of the present disclosure. As shown in fig. 6a, the terminal 6100 may include: a processing module 6101. In some embodiments, the processing module 6101 is configured to, when determining that the variation of the first reference signal received power RSRP value from the second RSRP value is less than or equal to the threshold, determine that the timing advance TA of transmitting the sounding reference signal SRS is valid, where the terminal is in a radio resource control RRC non-connected state, where the SRS includes at least one of: a preconfigured SRS and an SRS configuring an effective area; the second RSRP value represents an RSRP value stored by the terminal, and the first RSRP value represents an RSRP value obtained by the terminal measuring a reference signal of a designated cell. In some embodiments, 6100 may include a transceiver module 6102, where the transceiver module 6102 is configured to perform the steps of transmitting and/or receiving performed by the terminal 101 in any of the above methods.

In some embodiments, the transceiver module 6102 is configured to perform at least one of: the terminal receives the SRS configuration information through the RRC release message, wherein the SRS configuration information is used for configuring the preconfigured SRS. The terminal receives SRS configuration information through the RRC release message, wherein the SRS configuration information is used for configuring SRS of the effective area. The terminal receives SRS configuration information through the RRC reconfiguration information, wherein the SRS configuration information is used for configuring the preconfigured SRS.

In some embodiments, the processing module 6101 further functions to: and the terminal performs cell reselection, adjusts TA by itself, measures the reference signal of the current service cell to obtain RSRP, and updates the stored second RSRP value into the measured RSRP value.

In some embodiments, the processing module 6101 further functions to: and determining that a timer of the TA associated with the uplink positioning reference signal is in an operating state.

In some embodiments, the SRS is a preconfigured SRS, the first information is used to activate the preconfigured SRS before receiving the first information, and/or the processing module 6101 is further configured to perform at least one of: the TA timer associated with the preconfigured SRS is not started. The TA is not self-adjusted when cell reselection occurs. The RSRP value of the last serving cell before the terminal switches from the RRC connected state to the RRC disconnected state is not saved. The RSRP value of the cell in which the terminal receives the SRS configuration information in the RRC connected state is not saved. The relationship of the amount of change between the first RSRP value and the second RSRP value to the threshold is not evaluated. Terminal

And performing cell reselection, and performing self-adjustment on the TA, wherein the second RSRP value is not updated to be the RSRP value of the current serving cell. Receiving second information, not storing the RSRP value of the current serving cell or not updating the stored RSRP value, wherein the second information is used for indicating at least one of the following TA commands: a TA command indicated by the medium access control unit. TA command. Absolute TA command.

In some embodiments, the SRS is a preconfigured SRS, the first information is used to activate the preconfigured SRS when the first information is received, and/or the processing module 6101 is further configured to perform at least one of: receiving second information sent by the network device in the process of receiving the first information sent by the network device, wherein the second information is used for indicating at least one of the following TA commands: a TA command indicated by the medium access control unit. TA command. Absolute TA command. A TA timer associated with the preconfigured SRS is started. The RSRP value of the reference signal of the current serving cell is measured as a second RSRP value. The amount of change between the first RSRP value and the second RSRP value is evaluated in relation to a threshold value.

In some embodiments, after starting the TA timer associated with the preconfigured SRS, the processing module 6101 is further configured to perform at least one of: the TA is self-adjusted when cell reselection occurs. Terminal

And performing cell reselection, and performing self-adjustment on the TA, and updating the second RSRP value to be the RSRP value of the current serving cell. And receiving the second information, storing the RSRP value of the current serving cell, and/or updating the stored RSRP value.

Fig. 6b is a schematic structural diagram of a network device according to an embodiment of the present disclosure. As shown in fig. 6b, the network device 6200 may include: transceiver module 6201. The transceiver module 6201 is configured to send second information in a process of sending first information, where the first information is used to activate a preconfigured SRS, and the second information is used to indicate at least one of the following TA commands: a TA command indicated by the media access control unit; a TA command; absolute TA command. Optionally, the transceiver module is configured to perform the communication steps such as transmission and/or reception performed by the terminal 101 in any of the above methods, which are not described herein.

In some embodiments, the transceiver module 6201 is further configured to: and receiving SRS, wherein the TA corresponding to the SRS is determined to be valid based on the fact that the variation of the first Reference Signal Received Power (RSRP) value compared with the second RSRP value is smaller than or equal to a threshold, and the SRS comprises at least one of the following: preconfigured SRS, SRS configuring an effective area. The second RSRP value represents an RSRP value stored by the terminal, and the first RSRP value represents an RSRP value obtained by the terminal measuring a reference signal of a designated cell.

In some embodiments, the transceiver module 6201 is further configured to perform at least one of: the terminal receives SRS configuration information through the RRC release message, wherein the SRS configuration information is used for configuring the preconfigured SRS. The terminal receives SRS configuration information through the RRC release message, wherein the SRS configuration information is used for configuring SRS of the effective area. The terminal receives SRS configuration information through the RRC reconfiguration information, wherein the SRS configuration information is used for configuring the preconfigured SRS.

In some embodiments, the network device 6200 may also include a processing module. The processing module is configured to perform the steps of the communication method related to the above-mentioned embodiment.

Fig. 7a is a schematic structural diagram of a communication device 7100 according to an embodiment of the present disclosure. The communication device 7100 may be a network device, a terminal, a chip system, a processor, or the like that supports the network device to implement any of the above methods, or a chip, a chip system, a processor, or the like that supports the terminal to implement any of the above methods. Alternatively, the network device may be an access network device, a core network device, or the like. Alternatively, the terminal may be a user equipment or the like. The communication device 7100 may be used to implement the methods described in the above method embodiments, and may be referred to in particular in the description of the above method embodiments.

As shown in fig. 7a, the communication device 7100 includes one or more processors 7101. The processor 7101 may be a general-purpose processor or a special-purpose processor, etc., and may be, for example, a baseband processor or a central processing unit. The baseband processor may be used to process communication protocols and communication data, and the central processor may be used to control the communication device, execute programs, and process the data of the programs. The communication device 7100 is for performing any of the above methods. Alternatively, the communication means may be a base station, a baseband chip, a terminal device chip, a DU or CU, etc.

In some embodiments, the communication device 7100 also includes one or more memories 7102 for storing instructions. Alternatively, all or part of the memory 7102 may be external to the communication device 7100.

In some embodiments, the communication device 7100 also includes one or more transceivers 7103. When the communication device 7100 includes one or more transceivers 7103, the transceiver 7103 performs the communication step S2101 of transmission and/or reception in the above-described method, and the processor 7101 performs other steps.

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

In some embodiments, the communication device 7100 may include one or more interface circuits 7104. Optionally, an interface circuit 7104 is coupled to the memory 7102, the interface circuit 7104 being operable to receive signals from the memory 7102 or other device, and to transmit signals to the memory 7102 or other device. For example, the interface circuit 7104 may read an instruction stored in the memory 7102 and send the instruction to the processor 7101.

The communication device 7100 in the above embodiment description may be a network device or a terminal, but the scope of the communication device 7100 described in the present disclosure is not limited thereto, and the structure of the communication device 7100 may not be limited by fig. 7 a. The communication device may be a stand-alone device or may be part of a larger device. For example, the communication device may be: 1) A stand-alone integrated circuit IC, or chip, or a system-on-a-chip or subsystem; (2) A set of one or more ICs, optionally including storage means for storing data, programs; (3) an ASIC, such as a Modem (Modem); (4) modules that may be embedded within other devices; (5) A receiver, a terminal device, an intelligent terminal device, a cellular phone, a wireless device, a handset, a mobile unit, a vehicle-mounted device, a network device, a cloud device, an artificial intelligent device, and the like; (6) others, and so on.

Fig. 7b is a schematic diagram of the structure of a chip 7200 according to an embodiment of the disclosure. For the case where the communication device 7100 may be a chip or a chip system, reference may be made to the schematic structural diagram of the chip 7200 shown in fig. 7b, but is not limited thereto.

The chip 7200 includes one or more processors 7201, the chip 7200 being configured to perform any of the above methods.

In some embodiments, the chip 7200 further includes one or more interface circuits 7202. Optionally, an interface circuit 7202 is coupled to the memory 7203, the interface circuit 7202 may be configured to receive signals from the memory 7203 or other device, and the interface circuit 7202 may be configured to transmit signals to the memory 7203 or other device. For example, the interface circuit 7202 may read instructions stored in the memory 7203 and send the instructions to the processor 7201.

In some embodiments, the interface circuit 7202 performs the communication step S2101 of transmitting and/or receiving, etc. in the above-described method, and the processor 7201 performs other steps.

In some embodiments, the terms interface circuit, interface, transceiver pin, transceiver, etc. may be interchanged.

In some embodiments, the chip 7200 further includes one or more memories 7203 for storing instructions. Alternatively, all or a portion of memory 7203 may be external to chip 7200.

The present disclosure also proposes a storage medium having stored thereon instructions that, when executed on a communication device 7100, cause the communication device 7100 to perform any of the above methods. Optionally, the storage medium is an electronic storage medium. Alternatively, the storage medium described above is a computer-readable storage medium, but is not limited thereto, and it may be a storage medium readable by other devices. Alternatively, the above-described storage medium may be a non-transitory (non-transitory) storage medium, but is not limited thereto, and it may also be a transitory storage medium.

The present disclosure also proposes a program product which, when executed by a communication device 7100, causes the communication device 7100 to perform any of the above methods. Optionally, the above-described program product is a computer program product.

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

Claims

1. A method of communication, the method comprising:

in response to a terminal determining that the amount of change of the first reference signal received power RSRP value from the second RSRP value is less than or equal to a threshold, the terminal determines that a timing advance TA of transmitting a sounding reference signal SRS is valid, the terminal is in a radio resource control RRC non-connected state, the SRS includes at least one of: a preconfigured SRS and an SRS configuring an effective area;

the second RSRP value represents an RSRP value stored by the terminal, and the first RSRP value represents an RSRP value obtained by the terminal measuring a reference signal of a designated cell.

2. The method of claim 1, wherein the designated cell comprises at least one of:

the second RSRP value corresponds to a cell;

the terminal switches from the RRC connection state to the last service cell before the RRC non-connection state;

A cell in which a terminal receives a TA command;

the terminal adjusts the cell of the TA by itself;

the terminal is currently serving cell.

3. The method according to claim 1 or 2, characterized in that the second RSRP value comprises at least one of the following:

the terminal receives the RSRP value of the district of SRS configuration information in the RRC connection state;

the terminal switches from the RRC connection state to the RSRP value of the last service cell before the RRC non-connection state;

the terminal receives the RSRP value of the cell of the TA command;

the terminal adjusts the RSRP value of the cell of the TA by itself;

the RSRP value of the current serving cell of the terminal.

4. A method according to any one of claims 1-3, characterized in that the method further comprises at least one of the following:

the terminal receives SRS configuration information through an RRC release message, wherein the SRS configuration information is used for configuring the preconfigured SRS;

the terminal receives SRS configuration information through an RRC release message, wherein the SRS configuration information is used for configuring SRS of an effective area;

and the terminal receives SRS configuration information through RRC reconfiguration information, wherein the SRS configuration information is used for configuring the preconfigured SRS.

5. The method according to claim 3 or 4, characterized in that the method further comprises:

and the terminal performs cell reselection, adjusts TA by itself, measures a reference signal of the current service cell to obtain a third RSRP, and updates the second RSRP value to the third RSRP value.

6. The method according to any one of claims 1 to 5, further comprising:

and determining that the timer of the TA associated with the SRS is in an operating state.

7. The method of any of claims 1-6, wherein the SRS is a preconfigured SRS, the method further comprising:

first information is received, the first information being used to activate the preconfigured SRS.

8. The method according to any one of claims 1 to 7, further comprising:

and sending SRS according to the preconfigured SRS.

9. The method according to any of claims 7 or 8, characterized in that before receiving the first information and/or before transmitting SRS according to a preconfigured SRS, the method further comprises at least one of:

not starting a TA timer associated with the preconfigured SRS;

the TA is not automatically adjusted when the cell reselection occurs;

the RSRP value of the last serving cell before the terminal is switched from the RRC connection state to the RRC non-connection state is not saved;

the RSRP value of the district in which the terminal receives the SRS configuration information in the RRC connection state is not saved;

not evaluating a relationship of a variation between the first RSRP value and the second RSRP value to a threshold;

The terminal performs cell reselection, adjusts TA automatically, and does not update the second RSRP value to the RSRP value of the currently served cell;

receiving second information, not storing the RSRP value of the current serving cell or not updating the stored RSRP value, wherein the second information is used for indicating at least one of the following TA commands:

a TA command indicated by the media access control unit;

a TA command;

absolute TA command.

10. The method according to any of claims 1 to 9, wherein the SRS is a preconfigured SRS, the first information being used to activate the preconfigured SRS upon receipt of the first information, and/or the method further comprises at least one of:

receiving second information sent by the network device in the process of receiving the first information sent by the network device, wherein the second information is used for indicating at least one of the following TA commands: a TA command indicated by the media access control unit; a TA command; an absolute TA command;

starting a TA timer associated with the preconfigured SRS;

measuring the RSRP value of the reference signal of the current serving cell as a second RSRP value;

and evaluating the relation between the variation quantity between the first RSRP value and the second RSRP value and a threshold value.

11. The method of claim 10, wherein after the starting of the TA timer associated with the preconfigured SRS, the method further comprises at least one of:

self-adjusting TA when cell reselection occurs;

the terminal performs cell reselection, adjusts TA automatically, and updates the second RSRP value to be the RSRP value of the current serving cell;

and receiving the second information, storing the RSRP value of the current serving cell, and/or updating the stored RSRP value.

12. A method of communication, the method comprising:

the method comprises the steps that second information is sent in the process that the network equipment sends first information, the first information is used for activating a preconfigured SRS, and the second information is used for indicating at least one of the following TA commands:

a TA command indicated by the media access control unit;

a TA command;

absolute TA command.

13. The method according to claim 12, wherein the method further comprises:

the network device receives a Sounding Reference Signal (SRS), wherein a TA corresponding to the SRS is determined to be valid based on that the variation of a first Reference Signal Received Power (RSRP) value compared with a second RSRP value is smaller than or equal to a threshold, and the SRS comprises at least one of the following: a preconfigured SRS and an SRS configuring an effective area;

14. The method of claim 13, wherein the designated cell comprises at least one of:

the second RSRP value corresponds to a cell;

a cell in which a terminal receives a TA command;

the terminal adjusts the cell of the TA by itself;

the terminal is currently serving cell.

15. The method according to claim 13 or 14, wherein the second RSRP value comprises at least one of:

the terminal receives the RSRP value of the cell of the TA command;

the terminal adjusts the RSRP value of the cell of the TA by itself;

the RSRP value of the current serving cell of the terminal.

16. The method according to any one of claims 12 to 15, further comprising at least one of:

sending SRS configuration information through an RRC release message, wherein the SRS configuration information is used for configuring the preconfigured SRS;

Sending SRS configuration information through an RRC release message, wherein the SRS configuration information is used for configuring SRS of an effective area;

and sending SRS configuration information through RRC reconfiguration information, wherein the SRS configuration information is used for configuring the preconfigured SRS.

17. A method of communication, the method comprising:

the variation of the first Reference Signal Received Power (RSRP) value compared with the second RSRP value is smaller than or equal to a threshold, the terminal determines that the Timing Advance (TA) of the terminal for transmitting the uplink positioning reference signal (SRS) is effective, the terminal is in a Radio Resource Control (RRC) non-connection state, and the SRS comprises at least one of the following: a preconfigured SRS and an SRS configuring an effective area;

the second RSRP value represents an RSRP value stored by the terminal, and the first RSRP value represents an RSRP value obtained by the terminal by measuring a reference signal of a designated cell;

the SRS is a preconfigured SRS, and the network equipment sends second information in the process of sending first information to the terminal, wherein the first information is used for activating the preconfigured SRS, and the second information is used for indicating at least one of the following TA commands: a TA command indicated by the media access control unit; a TA command; absolute TA command.

18. A terminal, comprising:

The processing module is configured to determine that a timing advance TA of a terminal transmitting an uplink positioning reference signal SRS is valid, where the terminal is in a radio resource control RRC non-connected state, where the change amount of the first reference signal received power RSRP value compared with the second RSRP value is less than or equal to a threshold, and the SRS includes at least one of: a preconfigured SRS and an SRS configuring an effective area;

19. A network device, comprising:

the transceiver module is configured to send second information in a process of sending first information to the terminal, where the first information is used to activate a preconfigured uplink positioning reference signal SRS, and the second information is used to indicate at least one of the following TA commands:

a TA command indicated by the media access control unit;

a TA command;

absolute TA command.

20. A terminal, comprising:

one or more processors;

wherein the processor is configured to perform the communication method of any of claims 1-11.

21. A network device, comprising:

one or more processors;

Wherein the processor is configured to perform the communication method of any of claims 12-16.

22. A communication system comprising a terminal configured to implement the communication method of any of claims 1-11 and a network device configured to implement the communication method of any of claims 12-16.

23. A storage medium storing instructions that, when executed on a communication device, cause the communication device to perform the communication method of any one of claims 1-11 or 12-16.