CN116156521A - Communication method and device - Google Patents

Communication method and device Download PDF

Info

Publication number
CN116156521A
CN116156521A CN202111359658.8A CN202111359658A CN116156521A CN 116156521 A CN116156521 A CN 116156521A CN 202111359658 A CN202111359658 A CN 202111359658A CN 116156521 A CN116156521 A CN 116156521A
Authority
CN
China
Prior art keywords
reference signal
uplink reference
uplink
information
identity
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202111359658.8A
Other languages
Chinese (zh)
Inventor
高鑫
刘梦婷
余政
刘道明
王寿林
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huawei Technologies Co Ltd
Original Assignee
Huawei Technologies Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Priority to CN202111359658.8A priority Critical patent/CN116156521A/en
Priority to PCT/CN2022/127003 priority patent/WO2023088039A1/en
Publication of CN116156521A publication Critical patent/CN116156521A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/02—Arrangements for optimising operational condition
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W64/00—Locating users or terminals or network equipment for network management purposes, e.g. mobility management
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/21—Control channels or signalling for resource management in the uplink direction of a wireless link, i.e. towards the network

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The application relates to a communication method and device. The terminal device receives system information, which includes configuration information of an uplink reference signal. And the terminal equipment sends an uplink reference signal to the access network equipment according to the configuration information. By the scheme provided by the embodiment of the application, the communication flow of random access and the like which are needed to be executed by the terminal equipment before being positioned is reduced, and the positioning process can be simplified. And because the communication flow which needs to be executed by the terminal equipment is reduced, random access related codes do not need to be placed in the terminal equipment, so that the storage space of the terminal equipment can be reduced, and the power consumption of the terminal equipment is saved.

Description

Communication method and device
Technical Field
The present disclosure relates to the field of communications technologies, and in particular, to a communications method and apparatus.
Background
In the latest third generation partnership project (3rd generation partnership project,3GPP) standard, a variety of positioning techniques are supported, including uplink-based time difference of arrival (UL-TDOA) positioning techniques.
For UL-TDOA location technology, a base station is required to measure uplink reference signals, for example, measure the arrival time of a sounding reference signal (sounding reference signal, SRS) received from a User Equipment (UE), and a location management function (location management function, LMF) locates the UE according to the measurement result of the base station. The positioning process under UL-TDOA techniques generally goes through the following steps: firstly, requesting SRS configuration information from a service base station of a UE to be positioned by an LMF, and feeding back the SRS configuration information to the LMF and sending the SRS configuration information to the UE by the service base station; then the LMF indicates SRS configuration information to other base stations; the LMF requests measurement from each base station which obtains SRS configuration information, and the base stations start to receive SRS from the UE after receiving the indication of the LMF and measure the arrival time of the SRS; finally, the base stations report the measurements to the LMF, which estimates the location of the UE using the received measurements.
Current positioning UEs support both 3GPP communication and positioning functions, and the UE needs to be positioned after establishing a radio resource control (radio resource control, RRC) connection with the base station. It can be seen that the current positioning procedure is disadvantageous for saving power consumption of the UE.
Disclosure of Invention
The embodiment of the application provides a communication method and device, which are used for saving power consumption of terminal equipment.
In a first aspect, a communication method is provided, which method may be performed by a terminal device, or by another device comprising the functionality of the terminal device, or by a chip system or other functional module capable of implementing the functionality of the terminal device, which chip system or functional module is for example provided in the terminal device. The method comprises the following steps: receiving system information, wherein the system information comprises configuration information of an uplink reference signal; and sending an uplink reference signal to access network equipment according to the configuration information.
In this embodiment of the present invention, the configuration information of the uplink reference signal may be included in the system information, and the terminal device may obtain the configuration information by receiving the system information, and after obtaining the configuration information, the terminal device may send the uplink reference signal to the access network device, without completing random access, or the terminal device may send the uplink reference signal to the access network device without performing random access, so that the network may locate the terminal device. By the scheme provided by the embodiment of the application, the communication flow of random access and the like which are needed to be executed by the terminal equipment before being positioned is reduced, and the positioning process can be simplified. And because the communication flow which needs to be executed by the terminal equipment is reduced, random access related codes do not need to be placed in the terminal equipment, so that the storage space of the terminal equipment can be reduced, and the power consumption of the terminal equipment is saved.
In an alternative embodiment, the method further comprises: and sending the identification of the terminal equipment on an uplink channel configured by the configuration information, wherein the uplink channel comprises an uplink control channel or an uplink shared channel. In the embodiment of the present application, the terminal device does not perform random access, and if the terminal device directly requests positioning or directly sends an uplink reference signal, the network may not recognize the identity of the terminal device. Therefore, the terminal equipment can send the identification of the terminal equipment to the access network equipment, so that the network can determine the identity of the terminal equipment, and the terminal equipment is positioned.
In an alternative embodiment, the uplink channel includes the uplink control channel, and the uplink control channel is used for requesting positioning; or, the uplink channel includes the uplink shared channel, and the method further includes: and sending request information to the access network equipment, wherein the request information is used for requesting positioning. If the uplink channel includes an uplink control channel, the uplink control channel may be used to request positioning in addition to carrying the identifier of the terminal device. For example, the format of the uplink control channel is a first format, the uplink control channel in the first format can be used for requesting positioning, if the access network device receives the uplink control channel in the first format, it can be determined that the terminal device requests positioning, and then according to the identifier of the terminal device borne by the uplink control channel, the identity of the terminal device requesting positioning can be determined. The uplink control channel is used for requesting positioning besides carrying the identifier of the terminal equipment, so that the terminal equipment does not need to additionally send information for requesting positioning, and signaling overhead can be saved. And if the uplink channel comprises an uplink shared channel, the terminal equipment can also send request information to the access network equipment to request positioning, so that the access network equipment can clearly determine the purpose of sending the identification by the terminal equipment.
In an alternative embodiment, the uplink reference signal is determined according to an identity of the terminal device. The terminal device may determine the uplink reference signal according to the identifier of the terminal device, and the terminal device may also send the identifier of the terminal device to the access network device, so that the access network device may determine the uplink reference signal according to the identifier of the terminal device, thereby being able to correctly detect the uplink reference signal. In this way, the access network device does not need to configure an uplink reference signal for the terminal device, thereby reducing the information quantity configured by the access network device and saving the signaling overhead. And the access network equipment and the terminal equipment can determine the uplink reference signals according to the identification of the terminal equipment, so that the uplink reference signals determined by the access network equipment and the terminal equipment are consistent, and the detection success rate of the access network equipment is improved.
In an alternative embodiment, the uplink reference signal is determined according to an identification of the terminal device and the configuration information. The uplink reference signal is determined according to the identifier of the terminal device, for example, different conditions are included, and one condition is that the uplink reference signal can be determined according to the identifier of the terminal device alone without referring to other information; alternatively, the uplink reference signal may be determined according to the identity of the terminal device and other information, for example, configuration information of the uplink reference signal. It can be seen that the determination manner of the uplink reference signal is more flexible.
In an alternative embodiment, the configuration information includes one or more of the following: bandwidth information of the uplink reference signal, a period of the uplink reference signal, a number of symbols occupied by the uplink reference signal, or comb tooth information of the uplink reference signal in a frequency domain. The configuration information of the uplink reference signal may configure various parameters related to the uplink reference signal, as just a few examples, and may also configure other parameters of the uplink reference signal in addition to the above parameters.
In an optional implementation manner, the sequence identifier of the uplink reference signal is the same as the identifier of the terminal device; or, the sequence identifier of the uplink reference signal is obtained by taking a module of the identifier of the terminal equipment; or, the sequence identifier of the uplink reference signal is part of the identifier of the terminal device. The uplink reference signal is determined according to the identity of the terminal device, for example, including that the sequence identity of the uplink reference signal is determined according to the identity of the terminal device. The determination mode can be multiple and flexible.
In an alternative embodiment, the time domain position and/or the frequency domain position of the uplink reference signal is determined according to the identity of the terminal device. The uplink reference signal is determined according to the identity of the terminal device, for example, including that the time domain position and/or the frequency domain position of the uplink reference signal is determined according to the identity of the terminal device. It is understood that the determining of the uplink reference signal according to the identity of the terminal device may include determining the sequence identity of the uplink reference signal according to the identity of the terminal device, and/or determining the time domain position and/or the frequency domain position of the uplink reference signal according to the identity of the terminal device.
In an optional implementation manner, the time domain position of the uplink reference signal includes a time slot where the uplink reference signal is located, a number of the time slot where the uplink reference signal is located is determined according to the identifier of the terminal device, and the number of the time slot where the uplink reference signal is located is a number of the time slot where the uplink reference signal is located in a system frame. The number of the time slot where the uplink reference signal is located can be determined according to the identifier of the terminal device, so that both the terminal device and the access network device can determine the number of the time slot where the uplink reference signal is located according to the identifier of the terminal device, and the access network device can detect the uplink reference signal in the correct time slot. And the time slots of the uplink reference signals are determined according to the identifiers of the terminal devices, so that the time slots of the uplink reference signals transmitted by different terminal devices can be different, and the interference among the uplink reference signals is reduced.
In an alternative embodiment, the time domain position of the uplink reference signal includes a start symbol of the uplink reference signal, where the number of the start symbol of the uplink reference signal is determined according to the identifier of the terminal device and first information, and the first information includes the number of symbols occupied by the uplink reference signal and/or the number of symbols included in one slot. The number of the start symbol of the uplink reference signal can be determined according to the identifier of the terminal device and the first information, so that both the terminal device and the access network device can determine the start symbol of the uplink reference signal according to the identifier of the terminal device and the first information, and the access network device can detect the uplink reference signal on the correct symbol. And the initial symbol of the uplink reference signal is determined according to the identifier of the terminal device, so that the initial symbols of the uplink reference signals sent by different terminal devices may be different, thereby reducing the interference between the uplink reference signals.
In an optional implementation manner, the frequency domain position of the uplink reference signal includes a frequency domain starting position of the uplink reference signal, and the number of the subcarrier where the frequency domain starting position of the uplink reference signal is located is determined according to the identifier of the terminal device and comb tooth information of the uplink reference signal in the frequency domain. The frequency domain starting position of the uplink reference signal can be determined according to the identifier of the terminal equipment, so that the terminal equipment and the access network equipment can determine the frequency domain starting position of the uplink reference signal according to the identifier of the terminal equipment, and the access network equipment can detect the uplink reference signal at the correct frequency domain position. And the frequency domain initial position of the uplink reference signal is determined according to the identification of the terminal equipment, so that the frequency domain positions of the uplink reference signals transmitted by different terminal equipment can be different, thereby reducing the interference between the uplink reference signals.
In an alternative embodiment, the uplink reference signal is a positioning SRS or a ranging SRS. The uplink reference signal in the embodiment of the present application may be a reference signal dedicated for positioning or a reference signal dedicated for ranging, that is, the uplink reference signal is used for positioning or for ranging. Alternatively, the embodiments of the present application may not limit the use of the uplink reference signal. The uplink reference signal is, for example, an SRS, or may be another reference signal in the uplink direction.
In an alternative embodiment, the terminal device is used only for positioning. In this embodiment of the present application, the terminal device may be a terminal device dedicated to positioning, for example, the terminal device only has a positioning requirement and has no other requirements such as communication. Alternatively, the terminal device may be a general terminal device, which is not particularly limited.
In a second aspect, a second communication method is provided, which may be performed by an access network device, or by another device comprising the functions of the access network device, or by a chip system or other functional module capable of implementing the functions of the access network device, the chip system or functional module being for example provided in the access network device. The access network device is for example a base station. The method comprises the following steps: transmitting system information, wherein the system information comprises configuration information of an uplink reference signal; and receiving an uplink reference signal from the terminal equipment according to the configuration information.
In an alternative embodiment, the method further comprises: and receiving the identification of the terminal equipment on an uplink channel configured by the configuration information, wherein the uplink channel comprises an uplink control channel or an uplink shared channel.
In an alternative embodiment, the uplink channel includes the uplink control channel, and the uplink control channel is used for requesting positioning; or, the uplink channel includes the uplink shared channel, and the method further includes: and receiving request information from the terminal equipment, wherein the request information is used for requesting positioning.
In an alternative embodiment, the uplink reference signal is determined according to an identity of the terminal device.
In an alternative embodiment, the uplink reference signal is determined according to the identity of the terminal device and the configuration information.
In an alternative embodiment, the configuration information includes one or more of the following: bandwidth information of the uplink reference signal. And the period of the uplink reference signal. And the number of symbols occupied by the uplink reference signal. Or, the comb tooth information of the uplink reference signal in the frequency domain.
In an optional implementation manner, the sequence identifier of the uplink reference signal is the same as the identifier of the terminal device; or, the sequence identifier of the uplink reference signal is obtained by taking a module of the identifier of the terminal equipment; or, the sequence identifier of the uplink reference signal is part of the identifier of the terminal device.
In an alternative embodiment, the time domain position and/or the frequency domain position of the uplink reference signal is determined according to the identity of the terminal device.
In an optional implementation manner, the time domain position of the uplink reference signal includes a time slot where the uplink reference signal is located, a number of the time slot where the uplink reference signal is located is determined according to the identifier of the terminal device, and the number of the time slot where the uplink reference signal is located is a number of the time slot where the uplink reference signal is located in a system frame.
In an alternative embodiment, the time domain position of the uplink reference signal includes a start symbol of the uplink reference signal, where the number of the start symbol of the uplink reference signal is determined according to the identifier of the terminal device and first information, and the first information includes the number of symbols occupied by the uplink reference signal and/or the number of symbols included in one slot.
In an optional implementation manner, the frequency domain position of the uplink reference signal includes a frequency domain starting position of the uplink reference signal, and the number of the subcarrier where the frequency domain starting position of the uplink reference signal is located is determined according to the identifier of the terminal device and comb tooth information of the uplink reference signal in the frequency domain.
In an alternative embodiment, the uplink reference signal is a positioning SRS.
In an alternative embodiment, the method further comprises: and sending a first positioning request to core network equipment, wherein the first positioning request comprises an identifier of the terminal equipment and is used for requesting to position the terminal equipment. For example, the first positioning request includes the identifier of the terminal device, so that the core network device may send the identifier of the terminal device to the positioning server, so that the positioning server may send the identifier of the terminal device to a plurality of access network devices, and thus the plurality of access network devices may jointly implement positioning of the terminal device.
In an alternative embodiment, the method further comprises: measuring the uplink reference signal to obtain a measurement result; and sending the measurement result to a positioning server, wherein the measurement result is used for positioning the terminal equipment. The access network device can receive the uplink reference signal and measure the received uplink reference signal, and the obtained measurement result can be sent to the positioning server, so that the positioning server can determine the position of the terminal device according to the measurement result, and the positioning of the terminal device is realized.
Regarding the technical effects brought about by the second aspect or various alternative embodiments, reference may be made to the description of the technical effects of the first aspect or corresponding embodiments.
In a third aspect, a communication system is provided, the communication system comprising a terminal device, such as the access network device of the first and/or second aspect, and an access network device, such as the terminal device of the first and/or second aspect. For example, the access network device is configured to send system information, where the system information includes configuration information of an uplink reference signal; the terminal equipment is used for receiving the system information from the access network equipment and sending an uplink reference signal to the access network equipment according to the configuration information; the access network device is further configured to receive an uplink reference signal from the terminal device according to the configuration information.
In an alternative embodiment, the communication system further comprises the positioning server of the first and/or second aspect.
With regard to the method that can be implemented by the respective devices in the communication system, as well as the corresponding technical effects, etc., reference may be made to the description of the first and/or second aspects.
In a fourth aspect, a communication device is provided. The communication means may be a terminal device as described in the first and/or second aspect above. The communication device has the functions of the terminal device. The communication device is, for example, a terminal device or a functional module in a terminal device, such as a baseband device or a chip system, etc. In an alternative implementation, the communication device includes a baseband device and a radio frequency device. In another alternative implementation, the communication device includes a processing unit (sometimes also referred to as a processing module) and a transceiver unit (sometimes also referred to as a transceiver module). The transceiver unit can realize a transmission function and a reception function, and may be referred to as a transmission unit (sometimes referred to as a transmission module) when the transceiver unit realizes the transmission function, and may be referred to as a reception unit (sometimes referred to as a reception module) when the transceiver unit realizes the reception function. The transmitting unit and the receiving unit may be the same functional module, which is called a transceiver unit, and which can implement a transmitting function and a receiving function; alternatively, the transmitting unit and the receiving unit may be different functional modules, and the transmitting and receiving unit is a generic term for these functional modules.
In an optional implementation manner, the transceiver unit is configured to receive system information, where the system information includes configuration information of an uplink reference signal; and the processing unit is used for sending an uplink reference signal to the access network equipment through the receiving and transmitting unit according to the configuration information.
In an alternative implementation manner, the communication apparatus further includes a storage unit (sometimes also referred to as a storage module), where the processing unit is configured to couple to the storage unit and execute a program or instructions in the storage unit, and enable the communication apparatus to perform the functions of the terminal device in the first aspect and/or the second aspect.
In a fifth aspect, a communication device is provided. The communication means may be an access network device as described in the first and/or second aspect above. The communication device has the function of the access network equipment. The communication means are for example access network devices or functional modules in the access network devices, such as baseband means or chip systems etc. In an alternative implementation, the communication device includes a baseband device and a radio frequency device. In another alternative implementation, the communication device includes a processing unit (sometimes also referred to as a processing module) and a transceiver unit (sometimes also referred to as a transceiver module). Reference may be made to the description of the fourth aspect for an implementation of the transceiver unit.
In an optional implementation manner, the transceiver unit is configured to send system information, where the system information includes configuration information of an uplink reference signal; the processing is used for receiving the uplink reference signal from the terminal equipment through the transceiver unit according to the configuration information.
In an alternative implementation manner, the communication apparatus further includes a storage unit (sometimes referred to as a storage module), where the processing unit is configured to couple to the storage unit and execute a program or instructions in the storage unit, and enable the communication apparatus to perform the function of the access network device according to the first aspect and/or the second aspect.
In a sixth aspect, a computer readable storage medium is provided for storing a computer program or instructions which, when executed, cause a method performed by a terminal device or an access network device in the above aspects to be performed.
In a seventh aspect, there is provided a computer program product comprising instructions which, when run on a computer, cause the method of the above aspects to be carried out.
Drawings
Fig. 1A is a flowchart of uplink positioning performed by a UE;
FIG. 1B is a schematic diagram of an LMF determining a target to be located;
FIG. 2 is a schematic diagram of a network architecture as applied in embodiments of the present application;
fig. 3 is a flowchart of a communication method provided in an embodiment of the present application;
FIG. 4 is a flowchart of a more detailed communication method according to an embodiment of the present application;
fig. 5 is a schematic diagram of a slot in which an uplink reference signal determined by a UE in an embodiment of the present application is located;
fig. 6 is a schematic diagram of a start symbol of an uplink reference signal determined by a UE in an embodiment of the present application;
fig. 7 is a schematic diagram of a frequency domain location where an uplink reference signal determined by a UE in an embodiment of the present application is located;
fig. 8 is a schematic diagram of a protocol stack of a UE, a base station, and an AMF;
FIG. 9 is a schematic diagram of a clipped protocol stack according to an embodiment of the present application;
FIG. 10 is a schematic diagram of an apparatus according to an embodiment of the present application;
fig. 11 is a schematic view of yet another apparatus provided in an embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application more apparent, the embodiments of the present application will be described in further detail with reference to the accompanying drawings.
In the following, some terms or concepts in the embodiments of the present application are explained for easy understanding by those skilled in the art.
The methods and apparatus provided by embodiments of the present application may be applied to various communication systems, such as fifth generation (5th generation,5G), new Radio (NR), long term evolution (long term evolution, LTE), internet of things (internet of things, ioT), wireless-fidelity (WiFi), 3GPP related wireless communications, or other wireless communications that may occur in the future, and so on.
In this embodiment of the present application, the terminal device is a device with a wireless transceiver function, and may be a fixed device, a mobile device, a handheld device (for example, a mobile phone), a wearable device, an on-board device, or a wireless apparatus (for example, a communication module, a modem, or a chip system) built in the above device. The terminal device is used for connecting people, objects, machines and the like, and can be widely used in various scenes, including but not limited to the following scenes: cellular communication, device-to-device (D2D), vehicle-to-everything (vehicle to everything, V2X), machine-to-machine/machine-to-machine-type communications, M2M/MTC), internet of things (internet of things, ioT), virtual Reality (VR), augmented reality (augmented reality, AR), industrial control (industrial control), unmanned driving (self driving), remote medical (remote media), smart grid (smart grid), smart furniture, smart office, smart wear, smart transportation, smart city (smart city), drone, robot, and other end devices. The terminal device may sometimes be referred to as a User Equipment (UE), a terminal, an access station, a UE station, a remote station, a wireless communication device, or a user equipment, among others. For convenience of description, in the embodiment of the present application, a UE is taken as an example to illustrate a terminal device.
The network device in the embodiments of the present application may include, for example, an access network device, and/or a core network device. The access network equipment is equipment with a wireless receiving and transmitting function and is used for communicating with the terminal equipment. The access network devices include, but are not limited to, base stations (BTS, node B, eNodeB/eNB, or gNodeB/gNB), transceiver points (transmission reception point, TRP), base stations for subsequent evolution of the third generation partnership project (3rd generation partnership project,3GPP), access nodes in wireless fidelity (wireless fidelity, wi-Fi) systems, wireless relay nodes, wireless backhaul nodes, and the like. The base station may be: macro base station, micro base station, pico base station, small station, relay station, etc. Multiple base stations may support networks of the same access technology or may support networks of different access technologies. A base station may comprise one or more co-sited or non-co-sited transmission reception points. The access network device may also be a radio controller, a Centralized Unit (CU), and/or a Distributed Unit (DU) in the context of a cloud radio access network (cloud radio access network, CRAN). The access network device may also be a server or the like. For example, the network device in the vehicle-to-everything (vehicle to everything, V2X) technology may be a Road Side Unit (RSU). An access network device will be described below taking a base station as an example. The base station may communicate with the terminal device or may communicate with the terminal device through the relay station. A terminal device may communicate with multiple base stations in different access technologies. The core network device is used for realizing the functions of mobile management, data processing, session management, policy and charging, etc. The names of devices implementing the core network function in the systems of different access technologies may be different, and the embodiments of the present application are not limited to this. Taking a 5G system as an example, the core network device includes: access and mobility management functions (access and mobility management function, AMF), session management functions (session management function, SMF), policy control functions (policy control function, PCF) or user plane functions (user plane function, UPF), etc.
In the embodiment of the present application, the communication device for implementing the function of the network device may be a network device, or may be a device capable of supporting the network device to implement the function, for example, a chip system, and the device may be installed in the network device. In the technical solution provided in the embodiments of the present application, the device for implementing the function of the network device is exemplified by the network device, and the technical solution provided in the embodiments of the present application is described.
In the embodiments of the present application, the number of nouns, unless otherwise indicated, means "a singular noun or a plural noun", i.e. "one or more". "at least one" means one or more, and "a plurality" means two or more. "and/or", describes an association relationship of an association object, and indicates that there may be three relationships, for example, a and/or B, and may indicate: a alone, a and B together, and B alone, wherein a, B may be singular or plural. The character "/" generally indicates that the context-dependent object is an "or" relationship. For example, A/B, means: a or B. "at least one of" or the like means any combination of these items, including any combination of single item(s) or plural items(s). For example, at least one (one) of a, b, or c, represents: a, b, c, a and b, a and c, b and c, or a and b and c, wherein a, b, c may be single or plural.
The ordinal terms such as "first," "second," and the like in the embodiments of the present application are used for distinguishing a plurality of objects, and are not used to define a size, a content, an order, a timing, a priority, or an importance level of the plurality of objects. For example, the first positioning request and the second positioning request may be the same positioning request or may be different positioning requests, and such names do not indicate the difference in size, content, transmission order, priority, importance, or the like of the two positioning requests. In addition, the numbers of the steps in the embodiments described in the present application are only for distinguishing different steps, and are not used for limiting the sequence of the steps. For example, S301 may occur before S302, or may occur after S302, or may also occur concurrently with S302.
The technical features related to the embodiments of the present application are briefly described below.
According to the current protocol flow, under the UL-TDOA technology, the UE needs to access the network first, that is, the UE needs to perform cell search and random access first, establish RRC connection with the base station, and then initiate a positioning request. After the positioning request is initiated, the UE can obtain information required for positioning from the base station, for example, SRS configuration information is obtained, then the UE sends a positioning reference signal to the base station, and the network can position the UE. Referring to fig. 1A, a flow chart of uplink positioning for a UE is based on UL-TDOA techniques.
S101, the serving base station of the UE transmits a synchronization signal and a physical broadcast channel block (synchronization signal and PBCH block, SSB). Accordingly, the UE receives the SSB from the serving base station.
The SSB may carry a master information block (master information block, MIB) so that the UE may obtain the MIB, which may carry configuration information of a physical downlink control channel (physical downlink control channel, PDCCH).
S102, the service base station transmits the PDCCH. Accordingly, the UE receives a PDCCH from the serving base station.
The UE may detect the PDCCH, which may schedule a physical downlink shared channel (physical downlink shared channel, PDSCH), which may carry system information block 1 (system information block, SIB 1), according to configuration information of the PDCCH.
S103, the service base station transmits the PDSCH. Accordingly, the UE receives PDSCH from the serving base station.
The UE can receive the PDSCH according to the scheduling of the PDCCH, thereby obtaining SIB1 carried by the PDSCH. The SIB1 may configure random access resources required for the UE to initiate random access, e.g., configured with a random access preamble (preamble). After receiving SIB1, the UE may initiate random access. S101 to S103 may be regarded as a cell search procedure, and S104 to S107 as follows are random access procedures of the UE.
S104, the UE transmits a physical random access channel (physical random access channel, PRACH) to the serving base station. Accordingly, the serving base station receives the PRACH from the UE.
For example, the UE transmits a preamble to the serving base station through the PRACH according to the SIB1 configuration, and the serving base station receives the preamble from the UE. The preamble may also be referred to as a first message (Msg 1) in the random access procedure.
S105, the serving base station transmits a random access response (random access response, RAR) to the UE. Accordingly, the UE receives the RAR from the serving base station. The RAR may also be referred to as a second message (Msg 2) in the random access procedure.
S106, the UE sends an RRC setup request (RRC setup request) message to the serving base station. Accordingly, the serving base station receives the RRC setup request message from the UE. The RRC establishment request message may also be referred to as a third message (Msg 3) in the random access procedure.
S107, the serving base station sends an RRC setup response (RRC setup response) message to the UE. Accordingly, the UE receives an RRC setup response message from the serving base station. The RRC setup response message may also be referred to as a fourth message (Msg 4) in the random access procedure.
So far, the random access process of the UE is completed, and if the random access is successful, the UE establishes RRC connection with the base station. The positioning process for the UE is started next, that is, S108 to S117 as follows.
S108, the UE sends a message for requesting positioning to the AMF. Accordingly, the AMF receives a message for requesting positioning from the UE.
S109, the AMF sends a message for requesting positioning to the LMF. Accordingly, the LMF receives a message for requesting positioning from the AMF.
S110, the LMF sends a positioning information request message to the service base station. Accordingly, the serving base station receives a location information request message from the LMF. The positioning information request message is used for requesting to obtain SRS configuration information.
And S111, the service base station transmits a positioning information response to the LMF. Accordingly, the LMF receives a location information response from the serving base station. The positioning information response may carry SRS configuration information.
After receiving the SRS configuration information, the LMF may send the SRS configuration information to a plurality of base stations, which collectively locate the UE.
S112, the service base station sends the SRS configuration information to the UE. Accordingly, the UE receives SRS configuration information from the serving base station.
S113, the LMF transmits a measurement request to a plurality of base stations. For example, the plurality of base stations includes a serving base station, then the serving base station receives a measurement request from the LMF, accordingly.
S114, the UE transmits SRS. Accordingly, the serving base station receives the SRS from the UE.
Since the LMF transmits SRS configuration information to a plurality of base stations, the plurality of base stations may also receive SRS from the UE in addition to the serving base station.
S115, the service base station sends a measurement result to the LMF. Accordingly, the LMF receives the measurement result from the serving base station.
The serving base station makes measurements on the SRS from the UE, e.g., the measurement result includes the arrival time of the SRS, and the serving base station may send the measurement result to the LMF.
Since the LMF transmits the SRS configuration information to a plurality of base stations, the plurality of base stations may receive the SRS from the UE in addition to the serving base station, and the plurality of base stations may also measure the SRS and transmit the measurement results obtained respectively to the LMF, the LMF may obtain a plurality of measurement results.
S116, the LMF estimates the position of the UE. The LMF receives measurements from a plurality of base stations, and the LMF may estimate a location of the UE based on the plurality of measurements.
The following describes how the measurement results of the LMF UL-TDOA-based technique calculate the position of the target to be located, by taking the example of 3 base stations participating in the location, i.e. the LMF sends measurement requests to 3 base stations and also receives measurement results from these 3 base stations. The 3 base stations comprise for example the serving base station of the object to be located, the positions of the 3 base stations being known. Defining the coordinates of the ith base station among the 3 base stations as (x i ,y i ) I=1, 2,3, defining the coordinates of the object to be positioned as (x UE ,y UE ). For example, taking the 1 st base station (i.e., i=1) of the 3 base stations as a reference base station, assume that the arrival time of the SRS measured by the other 2 base stations is t i The time difference between the SRS arrival time measured by any one of the other 2 base stations and the SRS arrival time measured by the reference base station is Δt i1 . According to the definition of a hyperbola (constant distance from two fixed points), the following set of equations can be listed if the target to be located is located on a hyperbola with two base stations as focus:
Figure BDA0003358647580000091
Figure BDA0003358647580000092
in equations 1 and 2, c represents the speed of light, and there are only two unknowns (x UE And y UE ) Then the two unknowns can be solved by combining the formula 1 and the formula 2, so that the position coordinates of the UE to be positioned can be obtained. It should be noted that, due to the measurement error, the above equation generally has no closed-form solution, and a classical optimization algorithm such as a least squares algorithm or a particle swarm filtering algorithm is adopted in engineering to estimate an optimal solution of the above equation.
A schematic diagram of a target to be located for an LMF determination may be referred to in fig. 1B. For example, 3 base stations participate in positioning, one hyperbola can be determined by taking any two base stations as a reference, and 3 hyperbolas can be determined altogether, and the intersection point of the 3 hyperbolas is the position of the UE to be positioned.
As can be seen from the above description, the UE needs to be located after establishing an RRC connection with the base station at present, that is, if a UE needs to support UL-TDOA location technology, it needs to complete basic communication flows such as cell search and random access, so as to obtain SRS configuration information. For the UE, if both the communication function and the positioning function of the 3GPP are to be supported, a large number of codes need to be embedded in the UE to support, and the code amount increases, a larger storage space needs to be set in the UE to store, and the larger the storage space is, the higher the power consumption of the UE is. It can be seen that the current positioning procedure is disadvantageous for saving power consumption of the UE.
In view of this, a technical solution of the embodiments of the present application is provided. In this embodiment of the present invention, the configuration information of the uplink reference signal may be included in the system information, the UE may obtain the configuration information by receiving the system information, and the UE may send the uplink reference signal to the access network device after obtaining the configuration information, without completing random access, or the UE may send the uplink reference signal to the access network device without performing random access, so that the network may locate the UE. By the scheme provided by the embodiment of the application, communication flows such as random access and the like which are needed to be executed by the UE before being positioned are reduced, and the positioning process can be simplified. And because the communication flow which needs to be executed by the UE is reduced, the random access related codes do not need to be placed in the UE, so that the storage space of the UE can be reduced, and the power consumption of the UE is saved.
Please refer to fig. 2, which is a schematic diagram of a network architecture according to an embodiment of the present application. Fig. 2 includes a core network device, an access network device, and a UE. The access network device and the core network device may jointly implement positioning of the UE. The core network device includes, for example, a location server and an AMF. Among other things, in different communication systems (e.g., 4G system or 5G system), the location server may be different, e.g., the location server includes an LMF, an enhanced mobile services location center (enhanced serving mobile location centre, E-SMLC), or a secure user plane location platform (SUPL location platform, SLP). In fig. 2, taking the example of a location server including an LMF, both E-SMLC and SLP are indicated by dashed lines to illustrate several options in juxtaposition to the LMF. A location server (e.g., E-SMLC, SLP, or LMF) may be used to obtain measurements from one or more positioning units (e.g., access network devices), possibly other location-related information, and assistance data may be provided to the positioning units to assist in determining the location of the target device. The access network devices in fig. 2 include, for example, an access network device 1, an access network device 2, and the like. The UE is connected with the access network equipment through a Uu interface, the access network equipment is connected with the AMF through a Next Generation (NG) -C interface, the access network equipment is connected with the AMF through an Xn interface, and the LMF is connected with the AMF through a NLs interface.
In fig. 2, an LMF is a device or component deployed in a core network to provide positioning functionality for a UE. The access network device in fig. 2 is for example a base station. The access network device corresponds to different devices in different systems, for example, may correspond to an eNB in a 4G system, and corresponds to an access network device in 5G in a 5G system, for example, a gNB. Of course, the technical solution provided in the embodiment of the present application may also be applied to a future mobile communication system, so that the access network device in fig. 2 may also correspond to a network device in a future mobile communication system. In the embodiment of the present application, the access network device is a base station, and actually, referring to the foregoing description, the access network device may also be an RSU device or other device. The access network device 1 and the access network device 2 in fig. 2 may be the same type of device, e.g. both enbs; alternatively, the access network device 1 and the access network device 2 in fig. 2 may also be different types of devices, for example, the access network device 1 is an eNB and the access network device 2 is a gNB.
The following describes the technical scheme provided by the embodiment of the application with reference to the accompanying drawings. It should be noted that, in the drawings corresponding to the embodiments of the present application, all steps indicated by dotted lines are optional steps. In the various embodiments of the present application, the terms "uplink reference signal", "uplink positioning reference signal", "positioning reference signal" etc. characterize the same feature, i.e. represent the uplink reference signal for positioning, and are not explicitly distinguished hereinafter. If the uplink reference signal is an SRS, then the terms "SRS signal", "positioning SRS signal", "SRS", etc. are also characteristic of the same feature, i.e. represent the SRS for positioning.
An embodiment of the present application provides a first communication method, please refer to fig. 3, which is a flowchart of the method. The present invention relates to a UE, an access network device, a core network device, a positioning server, and the like. The positioning server may also be called a positioning device, a location server, a positioning service center, a positioning processing center, or the like, and in any case, the positioning server can determine the location of the UE according to the measurement result of the access network device, and the name of the UE is not limited. In the following description, this method is taken as an example applied to the network architecture shown in fig. 2. The UE described below is, for example, a UE in the network architecture shown in fig. 2, the access network device described below is, for example, an access network device 1 or an access network device 2 in the network architecture shown in fig. 2, the core network device described below is, for example, an AMF in the network architecture shown in fig. 2, and the positioning server described below is, for example, an LMF, an E-SMLC, or an SLP in the network architecture shown in fig. 2. For simplicity of description, in various embodiments of the present application, the core network device is an AMF and the location server is an LMF.
S301, the access network equipment sends system information. Accordingly, the UE receives system information from the access network device. For example, the access network device sends the system information by broadcasting, there may be a plurality of UEs capable of receiving the system information, where the UE receives the system information as an example.
The system information includes configuration information of the uplink reference signal, which is used for configuring the uplink reference signal. The uplink reference signal in the embodiment of the present application may be used for positioning, for example, for positioning the UE that sends the uplink reference signal, so that the uplink reference signal may also be called a positioning reference signal, or called a positioning uplink reference signal, or may have other names. The uplink reference signal is, for example, SRS, or may be another signal.
The configuration information includes, for example, one or more of the following: bandwidth information of an uplink reference signal, a period of the uplink reference signal, the number of symbols occupied by the uplink reference signal in a time domain, comb type of the uplink reference signal in a frequency domain, frequency domain starting position information of the uplink reference signal, a number of a slot (slot) where the uplink reference signal is located, or time domain starting position information of the uplink reference signal. Alternatively, the configuration information may further include other information for configuring the uplink reference signal.
The system information is, for example, SIB1, and may include other information in addition to configuration information of the uplink reference signal, where the other information includes, for example, cell selection information and/or unified access control (unifiied access control, UAC) information. Wherein the cell selection information may be used to configure parameters for determining whether a cell is suitable for cell selection (e.g., the cell selection information includes a minimum signal quality level to be met for accessing the cell), and the UAC information includes UAC restriction information (UAC-barrennifo) for restricting network access, for example. Alternatively, the system information may be other system information than SIB1 and MIB. Wherein the cell is a cell transmitting the SIB1, and other system information besides SIB1 and MIB, for example, SIB2, 3 … …. The configuration information is for example included in an information element (information element, IE) of the system information. For example, the configuration information may be included in an IE already existing in the system information, or an IE may be added to the system information to carry the configuration information. Taking SIB1 as an example, the configuration information may be included in a common uplink bandwidth (BWP-uplink common) existing in SIB1, or the configuration information may be included in other IEs existing in SIB1, or an IE may be newly added in SIB1 to carry the configuration information.
S302, the UE sends an uplink reference signal to the access network equipment according to the configuration information.
The UE has obtained configuration information of the uplink reference signal through the system information, and then the UE may send the uplink reference signal to the access network device according to the configuration information, where the uplink reference signal may be used for positioning, for example, to locate the UE. After the access network device receives the uplink reference signal, the access network device can measure the uplink reference signal and send the measurement result to the LMF, so that the LMF can locate the UE according to the measurement result. That is, the UE obtains the configuration information of the uplink reference signal through the system information, so that the UE can realize positioning without performing random access, reducing communication flows such as random access that the UE needs to perform before being positioned, and simplifying the positioning process. And because the communication flow which needs to be executed by the terminal equipment is reduced, random access related codes do not need to be placed in the terminal equipment, so that the storage space of the terminal equipment can be reduced, and the power consumption of the terminal equipment is saved. In addition, for some scenes, such as asset inventory, logistics tracking, electronic fence, etc., there is a high demand for power consumption for positioning, such as maintaining a service life of 6 to 18 months, and these scenes require far less communication than positioning. Therefore, if the technical solution of the embodiment of the present application is applied to these scenarios, the UE may help to maintain a longer service life because it is not required to perform communication flows such as random access.
For a better understanding of the technical solutions of the embodiments of the present application, the following description is given in detail by way of an example, which can be regarded as an alternative to the one shown in fig. 3. Please refer to fig. 4, which is a flowchart of the embodiment.
S401, the access network device transmits a physical broadcast channel (physical broadcast channel, PBCH). Accordingly, the UE receives the PBCH from the access network device. The access network device sends PBCH, for example, in a certain cell, so that there may be multiple UEs in the cell that can all receive the PBCH. The access network device is, for example, a serving base station of the UE. For example, the access network device sends an SSB, which is carried on the PBCH.
The PBCH may carry MIB, which may include some basic configuration information of the current cell, such as MIB configurable system frame number (system frame number, SFN), configuration information of PDCCH, etc. In addition, the UE may obtain downlink time synchronization with the current cell by receiving the PBCH.
S402, the access network equipment sends the PDCCH. Accordingly, the UE receives a PDCCH from the access network device. Alternatively, it is understood that the access network device transmits downlink control information (downlink control information, DCI) through the PDCCH, and correspondingly, the UE receives the DCI from the access network device through the PDCCH.
The MIB includes configuration information of the PDCCH, which includes, for example, time domain information and/or frequency domain information of the PDCCH, etc., and the UE can detect the PDCCH according to the configuration information of the PDCCH. The PDCCH may schedule PDSCH, or DCI carried by the PDCCH may schedule PDSCH.
Alternatively, the UE may also directly receive the PDSCH in S403 without performing S401 and S402, so S401 to S402 are optional steps.
S403, the access network equipment transmits the PDSCH. Accordingly, the UE receives PDSCH from the access network device.
The UE may receive the PDSCH according to scheduling of the PDCCH. The PDSCH may carry system information, for example, SIB1, or may be other system information, which is taken as an example in the embodiment of the present application. The SIB1 may include configuration information for an uplink reference signal. Here, S403 may be the same step as S301 in the embodiment shown in fig. 3, so that more contents (such as introduction of configuration information of an uplink reference signal, etc.) regarding S403 may refer to S301.
S404, the UE sends the identification of the UE to the access network equipment. Accordingly, the access network device receives an identification of the UE from the UE. The identity of the UE is for example an identity number (ID) of the UE. In the embodiment of the present application, the UE does not perform random access, and if the UE directly requests positioning or directly sends an uplink reference signal, the network may not recognize the identity of the UE. The UE may therefore send the identity of the UE to the access network device so that the network can ascertain the identity of the UE and thereby locate the UE. The identity of the UE is, for example, a sequence number that is used to uniquely identify the UE. The identifier of the UE may be configured when the UE leaves the factory, and solidified inside a chip of the UE, or may be a number allocated to the UE by other devices, for example, a number allocated to the UE by the access network device or the core network device. In summary, an identity of a UE is associated with the UE.
The UE may send the UE identity to the access network device on an uplink channel configured by SIB1, where the uplink channel includes, for example, an uplink control channel and/or an uplink shared channel, and a manner in which the UE sends the UE identity through a different uplink channel is described below by way of example.
As an alternative embodiment, the uplink channel comprises an uplink control channel. Optionally, the uplink control channel may be used to request positioning, that is, the uplink control channel may be used to request positioning in addition to carrying the UE identity. The access network device can determine that the UE is to request positioning after receiving the uplink control channel. The uplink control channel is, for example, a physical uplink control channel (physical uplink control channel, PUCCH), or may be another type of uplink control channel. SIB1 may configure a common PUCCH (PUCCH-ConfigCommon), which may be used as the uplink control channel, and the UE may send information to the access network device using the common PUCCH configured by SIB1 without being scheduled. In the embodiment of the application, the UE may send the identifier of the UE to the access network device by using the public PUCCH configured by SIB 1.
At the time of initial access, only two formats, namely PUCCH format (format) 0 and PUCCH format 1, are currently supported, that is, the format of the common PUCCH configured by SIB1 is generally PUCCH format0 or PUCCH format 1. However, the PUCCHs of these two formats can only carry 2 bits (bits) of information at most, and if the UE identity is carried through such PUCCHs, the carrying space may be insufficient. Alternatively, the embodiment of the present application proposes that the SIB1 may be configured with a PUCCH of a first format, where the first format is, for example, PUCCH format 2, PUCCH format 3, or PUCCH format 4, or the first format may also be a newly defined PUCCH, for example, referred to as PUCCH format 5, or may also have other names. For example, SIB1 may configure only the PUCCH of the first format, and not configure the conventional PUCCH format0 or PUCCH format 1, or SIB1 may configure the conventional PUCCH format0 or PUCCH format 1 in addition to the PUCCH of the first format, except that the UE in the embodiment of the present application may not use the conventional PUCCH format0 or PUCCH format 1. When the UE sends the identity of the UE to the access network device, the UE may send the identity through the PUCCH with the first format configured by SIB1, where the PUCCH with the first format may carry more information bits, and thus may be used to carry the identity of the UE. In addition, it may be that only the UE needing to be located sends the UE identifier to the access network device through the PUCCH configured by SIB1, and for a common UE (for example, a UE that does not need to be located, or a UE that does not have a high requirement on time delay or power consumption of location although it needs to be located) may still perform random access according to a normal procedure, so that the PUCCH with the first format may also implement a function, that is, the PUCCH with the first format may be used to request location, and the access network device may explicitly have the UE to request location according to the PUCCH with the first format, and then determine the identity of the UE requesting location according to the UE identifier.
As another alternative embodiment, the uplink channel comprises an uplink shared channel. In this case, optionally, the UE may also send request information to the access network device, where the request information is used to request positioning, after the access network device receives the request information, the access network device can clearly have the UE request positioning, and then, according to the identifier of the UE, the access network device can determine the identity of the UE that requests positioning. For example, the UE may first send request information to the access network device, and then send the UE identifier to the access network device through the uplink shared channel; or, the UE may first send the UE identifier to the access network device through the uplink shared channel, and then send the request information to the access network device; alternatively, the request information and the UE identifier may be sent together, for example, both the request information and the UE identifier may be carried on an uplink shared channel and sent together to the access network device. The uplink shared channel is, for example, a physical uplink shared channel (physical uplink share channel, PUSCH). The SIB1 can be configured with a public PUSCH, the public PUSCH can be used as the uplink shared channel, and the UE can send data to the access network equipment by using the public PUSCH configured by the SIB1 after the random access is successful. In the embodiment of the application, the UE can send the identifier of the UE to the access network device by using the public PUSCH configured by SIB1 without random access.
Optionally, the request information is, for example, a preamble. In this embodiment of the present application, the UE does not need to perform random access, but may provide a preamble, for example, a preamble used for positioning. Before the UE sends the UE identifier, the preamble may be sent to the access network device, and after the access network device receives the preamble, the UE may explicitly request positioning. Then the UE sends the identity of the UE to the access network device through the common PUSCH, and the access network device may explicitly request the identity of the located UE. For example, SIB1 includes an information a common configuration (msgA-ConfigCommon-r 16) of version 16, the IE may configure a common PUSCH and may configure a preamble, and the embodiments of the present application cause the msgA-ConfigCommon-r16 to configure a preamble for positioning, so that the UE may send the preamble configured by the msgA-ConfigCommon-r16 to the access network device and may send the identity of the UE to the access network device on the common PUSCH configured by the msgA-ConfigCommon-r 16.
This alternative scheme, although using a preamble, only borrows the preamble to request positioning, and does not perform the random access procedure, so, although the UE sends the preamble to the access network device, the access network device may not need to send a response to the UE after receiving the preamble. In addition, the access network device may not need to send a response to the UE after receiving the UE identification. Compared with the existing random access process, the scheme of the embodiment of the application reduces the signaling interaction flow, and is beneficial to saving the power consumption of the UE.
It is also possible that the UE sends the uplink reference signal directly to the access network device without sending the identity of the UE, so S404 is an optional step.
S405, the UE sends the uplink reference signal to the access network equipment according to the configuration information of the uplink reference signal. Accordingly, the access network device receives the uplink reference signal from the UE.
The UE obtains corresponding information of the uplink reference signal through configuration information of the uplink reference signal, for example, obtains information such as bandwidth of the uplink reference signal, and then the UE may send the uplink reference signal to the access network device according to the configuration information of the uplink reference signal.
Alternatively, the uplink reference signal may be determined according to the UE identity, or the UE may determine the uplink reference signal according to the UE identity, or the UE identity may be used to determine the uplink reference signal.
In the embodiment of the application, there may be multiple UEs that all request positioning, and these UEs all send uplink reference signals to the access network device. For example, UEs transmit uplink reference signals in the form of sequences, since the UEs do not perform random access, the access network device cannot transmit unicast messages to the UEs, that is, cannot configure sequence identifiers (for example, sequence IDs of SRS) of the uplink reference signals for the UEs, respectively, so when the UEs transmit sequences of the uplink reference signals to the access network device, it is likely that the transmitted sequences are identical, which causes interference between UEs, and the access network device cannot identify which UE the received uplink reference signal is from, so that the network cannot locate the UE. Thus, an alternative implementation manner of determining the uplink reference signal according to the UE identity is that the sequence identity of the uplink reference signal may be determined according to the UE identity, or the UE may determine the sequence identity of the uplink reference signal according to the UE identity.
Take the example of the uplink reference signal being SRS. At present, the SRS sequence is composed of ZC sequences, and different SRS sequences are mainly realized by configuring different sequence initialization IDs, that is, different sequence identifiers correspond to different SRS sequences, so as long as the sequence identifiers of the SRS are different, the corresponding SRS sequences are different. Then, because the identities of different UEs are different, the sequence identities of the uplink reference signals determined by the different UEs are different, and the sequences determined by the different UEs are different, so that the interference between the UEs can be reduced. The access network equipment can also determine the sequence identification of the uplink reference signal of the UE, so that the access network equipment can identify the relation between the uplink reference signal and the UE, can correctly detect the uplink reference signal and can correctly position the UE.
There may be various ways to determine the sequence identity of the uplink reference signal based on the identity of the UE. For example, in one manner, the UE identity is the same as the sequence identity of the uplink reference signal. In this case, the UE may directly use the UE identity as the sequence identity of the uplink reference signal. For example, referring to table 1, an example is given in which the identity of the UE is the same as the sequence identity of the uplink reference signal. In table 1, decimal is taken as an example.
TABLE 1
Identification of UE (decimal system) Sequence identification of uplink reference signal (decimal system)
1001 1001
1002 1002
For another example, the sequence identifier of the uplink reference signal is a part of the identifier of the UE, for example, the sequence identifier of the uplink reference signal is a high K bit of the identifier of the UE, or is a low K bit of the identifier of the UE, or is a middle K bit of the identifier of the UE, and K is a positive integer. In this case, the UE intercepts the UE identity, so that the sequence identity of the uplink reference signal can be obtained, and as to which part is intercepted, that is, the value of K and the position of the K bit in the UE identity can be configured by the access network device, or preconfigured in the UE, or predefined by the protocol. For example, referring to table 2, the sequence identity for the uplink reference signal is one example of a part of the identity of the UE. In table 2, decimal is taken as an example.
TABLE 2
Identification of UE (decimal system) Sequence identification of uplink reference signal (decimal system)
1001 1
1002 2
In table 2, taking the last bit of the UE identity as the sequence identity of the uplink reference signal as an example.
For another example, referring to table 3, the sequence identity for the uplink reference signal is another example of a part of the identity of the UE. In table 3, binary is taken as an example.
TABLE 3 Table 3
Figure BDA0003358647580000151
In table 3, the sequence identifier of the UE identifier is taken as an example of the lower 4 bits of the identifier of the UE. For example, the UE identifier is "10100101", the lower 4 bits of the identifier are "0101", and then "0101" can be used as the sequence identifier of the uplink reference signal. If "0101" is converted to decimal, "9".
For another example, the sequence identity of the uplink reference signal is obtained by modulo the identity of the UE. For example, the sequence identity of the uplink reference signal may satisfy the following relationship:
sequence identity of uplink reference signal = X mod (Y) (equation 3)
Where X represents the identity of the UE, or a portion of the identity of the UE (e.g., a portion truncated from the identity of the UE according to the above-described manner), Y represents a first modulo coefficient, and mod represents a modulo operation. Y may be preconfigured in the UE, or configured by the access network device, or predefined by the protocol. For example, referring to table 4, the sequence identity for the uplink reference signal is obtained by modulo the UE identity. In table 4, decimal is taken as an example.
TABLE 4 Table 4
Figure BDA0003358647580000152
As can be seen from table 4, when Y is different, the sequence identity of the resulting uplink reference signal may be different even though the identity of the UE is the same.
The UE may determine the sequence identity of the uplink reference signal in any of the above ways, and for the access network device, since the UE identity is received and may be used to determine the uplink reference signal, the access network device may determine the sequence identity of the uplink reference signal in the same way as the UE. The manner in which the UE and the access network device are configured, for example, is preconfigured in the UE and the access network device, or predefined by a protocol, or configured by the access network device, so that the UE can send an uplink reference signal to the access network device, and the access network device can also correctly detect the uplink reference signal from the UE.
Alternatively, in another optional implementation manner, the time domain position and/or the frequency domain position of the uplink reference signal may be determined according to the UE identifier, or the UE may also determine the time domain position and/or the frequency domain position of the uplink reference signal according to the UE identifier. It is to be appreciated that the sequence identity of the uplink reference signal can be determined based on an identity of the UE and/or the time domain location and/or the frequency domain location of the uplink reference signal can be determined based on the identity of the UE.
For example, the time domain position of the uplink reference signal includes a time slot where the uplink reference signal is located, where the time slot where the uplink reference signal is located may be determined according to the UE identifier, or, in other words, the UE may determine the time slot where the uplink reference signal is located according to the UE identifier. An alternative way of determining is that the number of the time slot in which the uplink reference signal is located is determined according to the identity of the UE and the number of time slots included in one subframe (subframe), or it is understood that the number of the time slot in which the uplink reference signal is located is determined according to the identity of the UE, and the number of the time slot in which the uplink reference signal is located is the number of the time slot in one system frame (system frame). The system frame may also be referred to as a radio frame (radio frame) or the like. For example, the number of the slot in which the uplink reference signal is located satisfies the following relationship:
Number of slot where uplink reference signal is located=x mod Z (formula 4)
Wherein X represents the identity of the UE, Z represents the modulus, and Z is, for example, the number of timeslots included in one system frame. For example, z=10, an example of a slot in which an uplink reference signal determined by a different UE is located may refer to fig. 5. Fig. 5 illustrates 4 UEs, and the identities of the 4 UEs are 1001, 1002, 1003, and 1004, respectively, and period=10 in fig. 5 indicates the length of one system frame. As can be seen from fig. 5, the number of the slot in which the uplink reference signal is determined by the UE identified as 1001 is 1, the number of the slot in which the uplink reference signal is determined by the UE identified as 1002 is 2, the number of the slot in which the uplink reference signal is determined by the UE identified as 1003 is 3, and the number of the slot in which the uplink reference signal is determined by the UE identified as 1004 is 4.
For another example, the time domain position of the uplink reference signal includes a time domain start position of the uplink reference signal, and the time domain start position of the uplink reference signal may be determined according to an identifier of the UE, or in other words, the UE may determine the time domain start position of the uplink reference signal according to the identifier of the UE. Optionally, the time domain starting position of the uplink reference signal may be determined according to the UE identifier, and specifically, the time domain starting position of the uplink reference signal may be determined according to the UE identifier and configuration information of the uplink reference signal. The time domain starting position of the uplink reference signal is, for example, a starting symbol (symbol) of the uplink reference signal, and optionally, the number of the starting symbol of the uplink reference signal is determined according to the identifier of the UE and first information, where the first information includes the number of symbols occupied by the uplink reference signal and/or the number of symbols included in a slot. Taking the example that the first information includes the number of symbols occupied by the uplink reference signal and the number of symbols included in one slot, for example, the number of the start symbol of the uplink reference signal satisfies the following relationship:
Number of start symbol of uplink reference signal=x×m mod N (formula 5)
Wherein X represents the identity of the UE, M represents the number of symbols occupied by the uplink reference signal, and N is the number of symbols included in one slot. Wherein M is configured, for example, by configuration information of an uplink reference signal. The number of the start symbol of the uplink reference signal is, for example, the number of the start symbol of the uplink reference signal in one slot. For example, m=4, n=14, the number of the start symbol of the uplink reference signal determined by the different UE may refer to fig. 6. Fig. 6 illustrates 3 UEs, where the identifiers of the 3 UEs are 1001, 1002, and 1003, respectively, and the number of the start symbol of the uplink reference signal determined by the UE identified as 1001 is 0, and the uplink reference signal occupies 4 symbols; the number of the initial symbol of the uplink reference signal determined by the UE identified as 1002 is 4, and the uplink reference signal occupies 4 symbols; the UE identified as 1003 determines the starting symbol of the uplink reference signal, which occupies 4 symbols, to have a number of 8.
For another example, the frequency domain location of the uplink reference signal includes a frequency domain start location of the uplink reference signal, where the frequency domain start location of the uplink reference signal may be determined according to an identifier of the UE, or in other words, the UE may determine the frequency domain start location of the uplink reference signal according to the identifier of the UE. Optionally, the determining, by the UE, the frequency domain starting position of the uplink reference signal according to the identifier of the UE may specifically include determining, by the UE, the frequency domain starting position of the uplink reference signal according to the identifier of the UE and configuration information of the uplink reference signal. An alternative determining manner is that the offset (or the number of the sub-carrier) of the sub-carrier where the frequency domain starting position of the uplink reference signal is located is determined according to the identification of the UE and the comb tooth information of the uplink reference signal in the frequency domain. For example, the offset of the subcarrier where the frequency domain starting position of the uplink reference signal is located satisfies the following relationship:
The number of the subcarrier where the frequency domain start position of the uplink reference signal is located=x mod Q (formula 6)
Wherein X represents an identifier of the UE, Q represents comb information of the uplink reference signal in a frequency domain, and for example, Q is configured by configuration information of the uplink reference signal. For example, q=4, m=4, n=14, the location of the uplink reference signal in the frequency domain determined by different UEs may refer to fig. 7. In fig. 7, 3 UEs are taken as an example, and the identifiers of the 3 UEs are 1001, 1002 and 1003, respectively, where a box with a horizontal line represents a frequency domain position where the UE with the identifier 1001 is located, a box with a "/" represents a frequency domain position where the UE with the identifier 1002 is located, and a box with a "\" represents a frequency domain position where the UE with the identifier 1003 is located.
Or, the UE may not directly determine the time domain position and/or the frequency domain position of the uplink reference signal according to the UE identifier, but determine the time domain information and/or the frequency domain information of the uplink reference signal, further determine the time domain position of the uplink reference signal according to the time domain information of the uplink reference signal, and determine the frequency domain position of the uplink reference signal according to the frequency domain information of the uplink reference signal. For example, the time domain information of the uplink reference signal includes a number of a slot in which the uplink reference signal is located, and/or includes a number of a start symbol of the uplink reference signal; the frequency domain information of the uplink reference signal includes, for example, frequency domain start position information of the uplink reference signal. That is, the UE may directly determine the time domain position and/or the frequency domain position of the uplink reference signal according to the UE identification (or according to the UE identification and the configuration information of the uplink reference signal), without determining the time domain information and/or the frequency domain information of the uplink reference signal first and then further determining the resource position; or, the UE may determine the time domain information and/or the frequency domain information of the uplink reference signal according to the UE identifier (or according to the UE identifier and the configuration information of the uplink reference signal), and further determine the resource location according to the time domain information and/or the frequency domain information of the uplink reference signal.
Alternatively, the UE may not determine the time domain position and/or the frequency domain position of the uplink reference signal according to the UE identity, but determine the time domain resource and/or the frequency domain resource of the uplink reference signal. The determination of the resource corresponds to the determination of the location of the resource.
For the access network device, since the UE identity is received and the UE identity may be used to determine the uplink reference signal, the access network device may determine the time domain location and the frequency domain location of the uplink reference signal in the same manner as the UE (or determine the time domain information and the frequency domain information of the uplink reference signal in the same manner as the UE, and further determine the resource location according to the time domain information and/or the frequency domain information of the uplink reference signal), or determine the time domain resource and the frequency domain resource of the uplink reference signal in the same manner as the UE.
If the time domain position (or time domain information or time domain resource) of the uplink reference signal is determined according to the identifier of the UE, the positioning information may not include the time domain information of the uplink reference signal; if the frequency domain location (or frequency domain information, or frequency domain resource) of the uplink reference signal is determined according to the identity of the UE, the positioning information may not include the frequency domain information of the uplink reference signal. For example, if the time slot in which the uplink reference signal is located is determined according to the identifier of the UE, the positioning information may not include the number of the time slot in which the uplink reference signal is located; or if the positioning information includes the number of the time slot where the uplink reference signal is located, the UE and the access network device do not determine the time slot where the uplink reference signal is located according to the identifier of the UE. For another example, if the starting symbol of the uplink reference signal is determined according to the UE identifier, the positioning information may not include the time domain starting position information of the uplink reference signal; or if the positioning information includes the time domain starting position information of the uplink reference signal, the UE and the access network device no longer determine the starting symbol of the uplink reference signal according to the identifier of the UE. For another example, if the frequency domain starting position of the uplink reference signal is determined according to the UE identifier, the positioning information may not include the frequency domain starting position information of the uplink reference signal; or if the positioning information includes the frequency domain starting position information of the uplink reference signal, the UE and the access network device no longer determine the frequency domain starting position of the uplink reference signal according to the identifier of the UE.
S405 may be the same step as S302 in the embodiment shown in fig. 3.
S406, the access network equipment sends a first positioning request to the AMF. Accordingly, the AMF receives a first positioning request from the access network device.
The first positioning request may request positioning of the UE, e.g., the first positioning request includes an identity of the UE.
Optionally, after the AMF receives the first positioning request, the UE may be authenticated. For example, if the UE has been registered with the core network, the AMF may determine registration information of the UE according to the identity of the UE, thereby authenticating the UE according to the registration information of the UE to determine whether the UE is legal. If the UE is not registered with the core network (e.g., as will be described later, the protocol stack of the UE may be clipped, and a non-access stratum (NAS) layer is not reserved, then the UE may not be able to register with the core network), then one or more pieces of information that allow the located UE may be pre-stored in the AMF, e.g., the identities of the UEs are pre-stored, then the AMF may determine whether the identity of the UE is pre-stored, if the identity of the UE is pre-stored, then it is determined that the UE is legal, otherwise it is determined that the UE is illegal.
If the AMF authenticates the UE, if the AMF determines that the UE is legal, the AMF can continue to execute the subsequent steps; if the AMF determines that the UE is not legitimate, then no subsequent steps may have to be performed, e.g., the AMF may not request location from the LMF, alternatively the AMF may send a reject location message to the access network device, ending the location procedure.
S407, the AMF sends a second positioning request to the LMF. Accordingly, the LMF receives a second location request from the AMF. For example, the second location request includes an identification of the UE.
Note that the identity of the UE included in the second positioning request in S407 may be the same as or different from the identity of the UE in each of the foregoing steps. For the purpose of distinction, the UE identities in S401 to S406 are referred to as a first identity, and the UE identity of the AMF transmitted to the LMF in S407 is referred to as a second identity. The first identity and the second identity are both identities of the UE, but may be the same or different. For example, the AMF may send the first identification directly to the LMF, then the first identification is the same as the second identification; or the AMF can process the first identifier to obtain a second identifier, and then send the second identifier to the LMF, so that the first identifier is different from the second identifier. For example, one processing manner of the AMF on the first identifier is that the AMF determines the sequence identifier of the uplink reference signal according to the first identifier (the determining manner can refer to the preamble), and the sequence identifier of the uplink reference signal can be used as the second identifier; for another example, in another processing manner, the AMF determines, according to the first identifier, a number of a symbol where a time domain start position of the uplink reference signal is located (the determining manner may refer to the foregoing), and the number of the symbol where the time domain start position of the uplink reference signal is located may be used as the second identifier; for another example, if the AMF determines, according to the first identifier, the number of the subcarrier where the frequency domain starting position of the uplink reference signal is located (the determination mode may refer to the foregoing), the number of the subcarrier where the frequency domain starting position of the uplink reference signal is located may be used as the second identifier. In the above manner, although the second identifier is actually used to identify the uplink reference signal, since the uplink reference signal is also determined according to the identifier of the UE, the UE may also be identified according to the above second identifiers.
S408, the LMF sends a first request message to the access network equipment. Accordingly, the access network device receives a first request message from the LMF. The first request message is used for requesting to acquire configuration information of the uplink reference signal.
S409, the access network equipment sends a positioning response message to the LMF. Accordingly, the LMF receives a location response message from the access network device. The first response message may include configuration information of the uplink reference signal.
S410, the LMF sends measurement requests to a plurality of access network devices. Accordingly, the plurality of access network devices receives measurement requests from the LMF. The plurality of access network devices, for example, includes the access network device, S410 exemplifies the access network device receiving a measurement request from the LMF.
The number of access network devices may be determined by the LMF, which access network devices are included, for example, the LMF may select a number of access network devices with better channel quality, or a number of access network devices with lighter load, etc.
The measurement request may include configuration information of the uplink reference signal, and optionally, the measurement request may further include a third identifier, for example, the LMF may obtain the third identifier according to the second identifier. For example, the third identifier is the same as the second identifier, or the third identifier is different from the second identifier. For example, the AMF directly sends the first identifier to the LMF, and the first identifier is the second identifier, or the first identifier is the same as the second identifier. The LMF can directly send the second identifier to a plurality of access network devices, and the second identifier is the third identifier, or the second identifier is the same as the third identifier; alternatively, the LMF may process the second identifier (the second identifier is the same as or different from the first identifier) to obtain a third identifier, and then send the third identifier to the access network device, where the second identifier is different from the third identifier. Regarding the manner in which the LMF processes the second flag, reference may be made to the manner in which the AMF processes the first flag as described in S407.
The measurement request includes the third identifier, so that the multiple access network devices determine the uplink reference signal sent by the UE according to the third identifier, so as to be able to detect the uplink reference signal from the UE. Regarding the procedure of determining the uplink reference signal by the access network device according to the third identifier, reference may be made to the procedure of determining the uplink reference signal by the UE in the foregoing.
S411, the access network equipment sends the measurement result to the LMF. Accordingly, the LMF receives the measurement results from the access network device.
Each of the plurality of access network devices may measure the uplink reference signal after receiving the uplink reference signal from the UE, to obtain a measurement result. The measurement result obtained by the access network device includes, for example, information such as a relative arrival time (relative time of arrival, RTOA) and/or an angle of arrival (AOA). The plurality of access network devices may each send the obtained measurement result to the LMF, and fig. 4 exemplifies that the serving base station of the UE (i.e., the access network device) sends the measurement result to the LMF.
And S412, the LMF determines the position of the UE according to the measurement result.
The LMF may determine the location of the UE based on the plurality of measurements, for example, if the LMF receives the plurality of measurements from a plurality of access network devices. Regarding the manner in which the LMF determines the location of the UE, reference may be made to the description of S116 in the flow shown in fig. 1A.
Wherein, S406 to S412 are optional steps, for example, after the access network device receives the uplink reference signal from the UE, the network may also locate the UE in other manners.
The UE in the embodiments of the present application is, for example, a UE dedicated to positioning, or the UE is only used for positioning. That is, the UE may only need to implement positioning-related functions and not need to implement more functions in addition thereto, thereby enabling the UE to implement positioning with lower power consumption. For example, the functions that the UE of the embodiments of the present application may implement include one or more of the following: cell search (e.g., including one or more of receiving a broadcast channel, receiving a downlink control channel, or receiving a downlink shared channel), transmitting a positioning reference signal (e.g., an uplink reference signal as described in embodiments of the present application), transmitting an uplink control channel, or transmitting an uplink shared channel. The UE may not have a NAS layer, and may not send RRC setup request or other functions.
Alternatively, the current protocol stack of the UE may be cut, for example, the communication related functions may be cut off at the UE side, and only the positioning related functions are reserved, so that the cut UE is the positioning-specific UE in the embodiment of the present application. Referring to fig. 8, a protocol stack diagram before clipping is shown. In fig. 8, the UE and the AMF each include a NAS layer, and in addition, the UE and the base station each include an RRC layer, a packet data convergence protocol (packet data convergence protocol, PDCP) layer, a radio link control (radio link control, RLC) layer, a medium access control (media access control, MAC) layer, and a Physical (PHY) layer. Referring again to fig. 9, a diagram of a clipped protocol stack is shown. In fig. 9, the NAS layer is shown with a dashed line, indicating that the NAS layer has been cut away. In fig. 9, the RRC layer, PDCP layer, RLC layer, MAC layer, and PHY layer are reserved on the UE side, but the blocks used to indicate these layers in fig. 9 are narrower than those in fig. 8, and are used to indicate that some or all of the communication-related functions in these layers are cut off, and the positioning-related functions are reserved. In fig. 9, the base station side still includes an RRC layer, a PDCP layer, an RLC layer, a MAC layer, and a PHY layer, that is, the protocol stacks of the base station side may not be cut out, but functions for serving the UE shown in fig. 9 may be reduced among the protocol stacks of the base station, and a hatched portion indicates the functions of the protocol stacks of the base station side serving the UE.
Alternatively, the UE described in the embodiments of the present application may be a general UE, and not be a positioning-specific UE, for example, no clipping of a protocol stack of the UE is required. That is, the scheme provided by the embodiments of the present application can be applied to various types of UEs.
In this embodiment of the present invention, the configuration information of the uplink reference signal may be included in the system information, and the terminal device may obtain the configuration information by receiving the system information, and after obtaining the configuration information, the terminal device may send the uplink reference signal to the access network device, without completing random access, or the terminal device may send the uplink reference signal to the access network device without performing random access, so that the network may locate the terminal device. By the scheme provided by the embodiment of the application, the communication flow of random access and the like which are needed to be executed by the terminal equipment before being positioned is reduced, and the positioning process can be simplified. And because the communication flow which needs to be executed by the terminal equipment is reduced, random access related codes do not need to be placed in the terminal equipment, so that the storage space of the terminal equipment can be reduced, and the power consumption of the terminal equipment is saved.
Fig. 10 is a schematic structural diagram of a communication device according to an embodiment of the present application. The communication device 1000 may be a terminal device or a circuit system of the terminal device according to the embodiment shown in fig. 3 or the embodiment shown in fig. 4, for implementing a method corresponding to the terminal device in the above method embodiment. Alternatively, the communication apparatus 1000 may be an access network device or a circuit system of the access network device according to the embodiment shown in fig. 3 or the embodiment shown in fig. 4, for implementing a method corresponding to the access network device in the above method embodiment. Specific functions can be seen from the description of the method embodiments described above. One type of circuitry is, for example, a chip system.
The communication device 1000 comprises at least one processor 1001. The processor 1001 may be used for internal processing of the device, implementing certain control processing functions. Optionally, the processor 1001 includes instructions. Alternatively, the processor 1001 may store data. Alternatively, the different processors may be separate devices, may be located in different physical locations, and may be located on different integrated circuits. Alternatively, the different processors may be integrated in one or more processors, e.g., integrated on one or more integrated circuits.
Optionally, the communications device 1000 includes one or more memories 1003 for storing instructions. Optionally, the memory 1003 may also store data therein. The processor and the memory may be provided separately or may be integrated.
Optionally, the communication device 1000 includes a communication line 1002, and at least one communication interface 1004. Among them, since the memory 1003, the communication line 1002, and the communication interface 1004 are optional, they are all indicated by broken lines in fig. 10.
Optionally, the communication device 1000 may also include a transceiver and/or an antenna. Wherein the transceiver may be used to transmit information to or receive information from other devices. The transceiver may be referred to as a transceiver, a transceiver circuit, an input-output interface, etc. for implementing the transceiver function of the communication device 1000 via an antenna. Optionally, the transceiver comprises a transmitter (transmitter) and a receiver (receiver). Illustratively, a transmitter may be used to generate a radio frequency (radio frequency) signal from the baseband signal, and a receiver may be used to convert the radio frequency signal to the baseband signal.
The processor 1001 may include a general purpose central processing unit (central processing unit, CPU), microprocessor, application specific integrated circuit (application specific integrated circuit, ASIC), or one or more integrated circuits for controlling the execution of programs of the present application.
Communication line 1002 may include a pathway to transfer information between the aforementioned components.
Communication interface 1004, using any transceiver-like means for communicating with other devices or communication networks, such as ethernet, radio access network (radio access network, RAN), wireless local area network (wireless local area networks, WLAN), wired access network, etc.
The memory 1003 may be, but is not limited to, a read-only memory (ROM) or other type of static storage device that can store static information and instructions, a random access memory (random access memory, RAM) or other type of dynamic storage device that can store information and instructions, or an electrically erasable programmable read-only memory (electrically erasable programmable read-only memory, EEPROM), a compact disc read-only memory (compact disc read-only memory) or other optical disk storage, optical disk storage (including compact disc, laser disc, optical disc, digital versatile disc, blu-ray disc, etc.), magnetic disk storage media or other magnetic storage devices, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer. The memory 1003 may be separate and coupled to the processor 1001 by communication lines 1002. Alternatively, the memory 1003 may be integral to the processor 1001.
The memory 1003 is used for storing computer-executable instructions for executing the embodiments of the present application, and is controlled to be executed by the processor 1001. The processor 1001 is configured to execute computer-executable instructions stored in the memory 1003, thereby implementing the communication method provided in the above-described embodiment of the present application.
Alternatively, the computer-executable instructions in the embodiments of the present application may be referred to as application program codes, which are not specifically limited in the embodiments of the present application.
In a particular implementation, the processor 1001 may include one or more CPUs, such as CPU0 and CPU1 in fig. 10, as one embodiment.
In a particular implementation, as one embodiment, the communications device 1000 may include multiple processors, such as processor 1001 and processor 1008 in fig. 10. Each of these processors may be a single-core (single-CPU) processor or may be a multi-core (multi-CPU) processor. A processor herein may refer to one or more devices, circuits, and/or processing cores for processing data (e.g., computer program instructions).
When the apparatus shown in fig. 10 is a chip, for example, a chip of an access network device, or a chip of a UPF, or a chip of an SMF, or a chip of a terminal device, the chip includes a processor 1001 (may further include a processor 1008), a communication line 1002, a memory 1003, and a communication interface 1004. In particular, the communication interface 1004 may be an input interface, a pin, or a circuit, etc. Memory 1003 may be a register, cache, or the like. The processor 1001 and the processor 1008 may be a general purpose CPU, microprocessor, ASIC, or one or more integrated circuits for controlling the execution of programs in the communication method of any of the embodiments described above.
In a first implementation manner, the communication apparatus 1000 may be used to implement a method corresponding to a terminal device in the above-mentioned application embodiment, and specific functions are described in the above-mentioned embodiment.
The communication device 1000 illustratively comprises a processor 1001 for executing a computer program or instructions, such that the method corresponding to the terminal device in the above-described application embodiments is executed. For example, the method corresponding to the terminal device in the embodiment of the application includes: receiving system information, wherein the system information comprises configuration information of an uplink reference signal; and sending an uplink reference signal to access network equipment according to the configuration information.
In a second implementation manner, the communication apparatus 1000 may be used to implement a method corresponding to the access network device in the above-mentioned application embodiment, and specific functions are described in the above-mentioned embodiment.
The communication apparatus 1000 illustratively comprises a processor 1001, which processor 1001 is configured to execute a computer program or instructions, such that the method corresponding to the access network device in the above-described application embodiment is executed. For example, the method corresponding to the access network device in the embodiment of the application includes: transmitting system information, wherein the system information comprises configuration information of an uplink reference signal; and receiving an uplink reference signal from the terminal equipment according to the configuration information.
The embodiment of the application may divide the functional modules of the apparatus according to the above method example, for example, each functional module may be divided corresponding to each function, or two or more functions may be integrated into one processing module. The integrated modules may be implemented in hardware or in software functional modules. It should be noted that, in the embodiment of the present application, the division of the modules is schematic, which is merely a logic function division, and other division manners may be implemented in actual implementation. For example, in the case of dividing the respective functional modules by the respective functions, fig. 11 shows a schematic diagram of an apparatus, and the apparatus 1100 may be an access network device or a terminal device, or a chip in the access network device or a chip in the terminal device, which are involved in the respective method embodiments described above. The apparatus 1100 comprises a transmitting unit 1101, a processing unit 1102 and a receiving unit 1103.
It should be understood that the apparatus 1100 may be used to implement steps performed by an access network device or a terminal device in the method of the embodiments of the present application, and relevant features may refer to the foregoing embodiments, which are not described herein again.
Alternatively, the functions/implementation procedures of the transmitting unit 1101, the receiving unit 1103, and the processing unit 1102 in fig. 11 may be implemented by the processor 1001 in fig. 10 calling computer-executable instructions stored in the memory 1003. Alternatively, the functions/implementation procedures of the processing unit 1102 in fig. 11 may be implemented by the processor 1001 in fig. 10 calling computer-executable instructions stored in the memory 1003, and the functions/implementation procedures of the transmitting unit 1101 and the receiving unit 1103 in fig. 11 may be implemented by the communication interface 1004 in fig. 10.
Alternatively, when the apparatus 1100 is a chip or a circuit, the functions/implementation procedures of the transmitting unit 1101 and the receiving unit 1103 may also be implemented by pins or circuits, or the like.
The present application also provides a computer readable storage medium storing a computer program or instructions which, when executed, implement a method performed by an access network device or a terminal device in the foregoing method embodiments. Thus, the functions described in the above embodiments may be implemented in the form of software functional units and sold or used as independent products. Based on such understanding, the technical solution of the present application may be embodied in essence or contributing part or part of the technical solution in the form of a software product stored in a storage medium, including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods described in the embodiments of the present application. The storage medium includes: a usb disk, a removable hard disk, a ROM, a RAM, a magnetic disk, or an optical disk, etc.
The present application also provides a computer program product comprising: computer program code which, when run on a computer, causes the computer to perform the method performed by the terminal device or the access network device in any of the method embodiments described above.
The application also provides a system which comprises the terminal equipment and the access network equipment, or comprises the terminal equipment, the access network equipment and the positioning server.
The embodiment of the application also provides a processing device, which comprises a processor and an interface; the processor is configured to perform a method performed by the terminal device or the access network device according to any of the above method embodiments.
In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When loaded and executed on a computer, produces a flow or function in accordance with embodiments of the present application, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable apparatus. The computer instructions may be stored in or transmitted from one computer-readable storage medium to another, for example, by wired (e.g., coaxial cable, optical fiber, digital Subscriber Line (DSL)), or wireless (e.g., infrared, wireless, microwave, etc.). The computer readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that contains an integration of one or more available media. The usable medium may be a magnetic medium (e.g., a floppy disk, a hard disk, a magnetic tape), an optical medium (e.g., a DVD), or a semiconductor medium (e.g., a Solid State Disk (SSD)), or the like.
The various illustrative logical blocks and circuits described in the embodiments of the present application may be implemented or performed with a general purpose processor, a digital signal processor (digital signal processor, DSP), an application specific integrated circuit (application specific integrated circuit, ASIC), a field-programmable gate array (field-programmable gate array, FPGA), or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described herein. A general purpose processor may be a microprocessor, but in the alternative, the general purpose processor may be any conventional processor, controller, microcontroller, or state machine. A processor may also be implemented as a combination of computing devices, e.g., a digital signal processor and a microprocessor, a plurality of microprocessors, one or more microprocessors in conjunction with a digital signal processor core, or any other similar configuration.
The steps of a method or algorithm described in the embodiments of the present application may be embodied directly in hardware, in a software element executed by a processor, or in a combination of the two. The software elements may be stored in RAM, flash memory, ROM, erasable programmable read-only memory (EPROM), EEPROM, registers, hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art. In an example, a storage medium may be coupled to the processor such that the processor can read information from, and write information to, the storage medium. In the alternative, the storage medium may be integral to the processor. The processor and the storage medium may reside in an ASIC, which may reside in a terminal device. In the alternative, the processor and the storage medium may reside in different components in a terminal device.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
Although the embodiments of the present application have been described in connection with specific features and embodiments thereof, it will be apparent that various modifications and combinations thereof can be made without departing from the scope of the embodiments of the application. Accordingly, the present embodiments and figures are merely exemplary illustrations of the present embodiments as defined in the appended claims and are considered to cover any and all modifications, variations, combinations, or equivalents of the present embodiments as fall within the scope of the present embodiments. It will be apparent to those skilled in the art that various modifications and variations can be made to the embodiments of the present application without departing from the scope of the embodiments of the present application. Thus, given that such modifications and variations of the embodiments of the present application fall within the scope of the claims of the embodiments of the present application and their equivalents, the embodiments of the present application are intended to include such modifications and variations as well.

Claims (30)

1. A method of communication, comprising:
receiving system information, wherein the system information comprises configuration information of an uplink reference signal;
and sending an uplink reference signal to access network equipment according to the configuration information.
2. The method according to claim 1, wherein the method further comprises:
and sending the identification of the terminal equipment on an uplink channel configured by the configuration information, wherein the uplink channel comprises an uplink control channel or an uplink shared channel.
3. The method of claim 2, wherein the step of determining the position of the substrate comprises,
the uplink channel comprises the uplink control channel, and the uplink control channel is used for requesting positioning; or alternatively, the first and second heat exchangers may be,
the uplink channel includes the uplink shared channel, and the method further includes: and sending request information to the access network equipment, wherein the request information is used for requesting positioning.
4. A method according to any one of claims 1-3, characterized in that the uplink reference signal is determined based on the identity of the terminal device.
5. The method according to any of claims 1-4, wherein the uplink reference signal is determined based on an identity of the terminal device and the configuration information.
6. The method of claim 5, wherein the configuration information comprises one or more of:
bandwidth information of the uplink reference signal;
the period of the uplink reference signal;
the number of symbols occupied by the uplink reference signals; or alternatively, the first and second heat exchangers may be,
comb information of the uplink reference signal in a frequency domain.
7. The method according to any one of claim 4 to 6, wherein,
the sequence identification of the uplink reference signal is the same as the identification of the terminal equipment; or alternatively, the first and second heat exchangers may be,
the sequence identification of the uplink reference signal is obtained by taking a model of the identification of the terminal equipment; or alternatively, the first and second heat exchangers may be,
the sequence identity of the uplink reference signal is part of the identity of the terminal device.
8. A method according to any of claims 4-7, characterized in that the time domain position and/or frequency domain position of the uplink reference signal is determined based on the identity of the terminal device.
9. The method of claim 8, wherein the time domain location of the uplink reference signal includes a time slot in which the uplink reference signal is located, the number of the time slot in which the uplink reference signal is located is determined according to the identifier of the terminal device, and the number of the time slot in which the uplink reference signal is located is a number of the time slot in which the uplink reference signal is located in one system frame.
10. The method according to claim 8 or 9, wherein the time domain position of the uplink reference signal comprises a start symbol of the uplink reference signal, wherein the number of the start symbol of the uplink reference signal is determined according to the identity of the terminal device and first information, and the first information comprises the number of symbols occupied by the uplink reference signal and/or the number of symbols included in one slot.
11. The method according to any one of claims 8 to 10, wherein the frequency domain position of the uplink reference signal includes a frequency domain start position of the uplink reference signal, and the number of the subcarrier where the frequency domain start position of the uplink reference signal is located is determined according to the identity of the terminal device and comb information of the uplink reference signal in the frequency domain.
12. The method according to any of claims 1-11, wherein the uplink reference signal is a positioning sounding reference signal, SRS.
13. The method according to any of claims 1-12, characterized in that the method is applied to a terminal device, which is used only for positioning.
14. A method of communication, comprising:
Transmitting system information, wherein the system information comprises configuration information of an uplink reference signal;
and receiving an uplink reference signal from the terminal equipment according to the configuration information.
15. The method of claim 14, wherein the method further comprises:
and receiving the identification of the terminal equipment on an uplink channel configured by the configuration information, wherein the uplink channel comprises an uplink control channel or an uplink shared channel.
16. The method of claim 15, wherein the step of determining the position of the probe is performed,
the uplink channel comprises the uplink control channel, and the uplink control channel is used for requesting positioning; or alternatively, the first and second heat exchangers may be,
the uplink channel includes the uplink shared channel, and the method further includes: and receiving request information from the terminal equipment, wherein the request information is used for requesting positioning.
17. A method according to any of claims 14-16, characterized in that the uplink reference signal is determined based on the identity of the terminal device.
18. The method according to any of claims 14-17, wherein the uplink reference signal is determined based on the identity of the terminal device and the configuration information.
19. The method of claim 18, wherein the configuration information includes one or more of:
Bandwidth information of the uplink reference signal;
the period of the uplink reference signal;
the number of symbols occupied by the uplink reference signals; or alternatively, the first and second heat exchangers may be,
comb information of the uplink reference signal in a frequency domain.
20. The method according to any one of claims 17 to 19, wherein,
the sequence identification of the uplink reference signal is the same as the identification of the terminal equipment; or alternatively, the first and second heat exchangers may be,
the sequence identification of the uplink reference signal is obtained by taking a model of the identification of the terminal equipment; or alternatively, the first and second heat exchangers may be,
the sequence identity of the uplink reference signal is part of the identity of the terminal device.
21. The method according to any of the claims 17-20, characterized in that the time domain position and/or the frequency domain position of the uplink reference signal is determined based on the identity of the terminal device.
22. The method of claim 21, wherein the time domain location of the uplink reference signal includes a time slot in which the uplink reference signal is located, the number of the time slot in which the uplink reference signal is located is determined according to the identity of the terminal device, and the number of the time slot in which the uplink reference signal is located is the number of the time slot in which the uplink reference signal is located in one system frame.
23. The method according to claim 21 or 22, wherein the time domain position of the uplink reference signal comprises a start symbol of the uplink reference signal, wherein the number of the start symbol of the uplink reference signal is determined according to the identity of the terminal device and first information, and the first information comprises the number of symbols occupied by the uplink reference signal and/or the number of symbols included in one slot.
24. The method according to any one of claims 21 to 23, wherein the frequency domain position of the uplink reference signal includes a frequency domain start position of the uplink reference signal, and the number of the subcarrier where the frequency domain start position of the uplink reference signal is located is determined according to the identity of the terminal device and comb information of the uplink reference signal in the frequency domain.
25. The method according to any of claims 14-24, wherein the uplink reference signal is a positioning SRS.
26. The method according to any one of claims 14 to 25, further comprising:
and sending a first positioning request to core network equipment, wherein the first positioning request comprises an identifier of the terminal equipment and is used for requesting to position the terminal equipment.
27. The method according to any one of claims 14 to 26, further comprising:
measuring the uplink reference signal to obtain a measurement result;
and sending the measurement result to a positioning server, wherein the measurement result is used for positioning the terminal equipment.
28. A communication device comprising a processor and a memory; wherein the memory is for storing one or more computer programs, the one or more computer programs comprising computer-executable instructions, which when executed by the communication device, cause the communication device to perform the method of any of claims 1-13 or cause the communication device to perform the method of any of claims 14-27.
29. A computer readable storage medium for storing a computer program which, when run on a computer, causes the computer to perform the method of any one of claims 1 to 13 or causes the computer to perform the method of any one of claims 14 to 27.
30. A computer program product, characterized in that the computer program product comprises a computer program which, when run on a computer, causes the computer to perform the method of any one of claims 1 to 13 or causes the computer to perform the method of any one of claims 14 to 27.
CN202111359658.8A 2021-11-17 2021-11-17 Communication method and device Pending CN116156521A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN202111359658.8A CN116156521A (en) 2021-11-17 2021-11-17 Communication method and device
PCT/CN2022/127003 WO2023088039A1 (en) 2021-11-17 2022-10-24 Communication method and apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202111359658.8A CN116156521A (en) 2021-11-17 2021-11-17 Communication method and device

Publications (1)

Publication Number Publication Date
CN116156521A true CN116156521A (en) 2023-05-23

Family

ID=86360468

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202111359658.8A Pending CN116156521A (en) 2021-11-17 2021-11-17 Communication method and device

Country Status (2)

Country Link
CN (1) CN116156521A (en)
WO (1) WO2023088039A1 (en)

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107277921B (en) * 2016-04-08 2021-06-01 华为技术有限公司 Method, device and system for transmitting uplink reference signal
CN108347766B (en) * 2017-01-25 2022-05-17 中兴通讯股份有限公司 Paging transmission method under uplink mobility, communication station and communication node
CN109600208B (en) * 2017-09-30 2021-06-04 电信科学技术研究院 Uplink transmission and configuration method, terminal and base station
CN110958686B (en) * 2018-09-27 2021-12-03 华为技术有限公司 Information processing method, communication device, and storage medium
CN111586830B (en) * 2019-02-15 2021-09-14 成都华为技术有限公司 Positioning method and communication device
WO2021068263A1 (en) * 2019-10-12 2021-04-15 华为技术有限公司 Information processing method, communication device and storage medium
CN113259287B (en) * 2020-02-13 2023-03-24 华为技术有限公司 Communication method and device
US20210203397A1 (en) * 2020-02-13 2021-07-01 Intel Corporation Systems and methods for multiple-beam uplink transmission
WO2022141184A1 (en) * 2020-12-30 2022-07-07 华为技术有限公司 Method for configuring uplink reference signal resource and related apparatus

Also Published As

Publication number Publication date
WO2023088039A1 (en) 2023-05-25

Similar Documents

Publication Publication Date Title
CN105075385B (en) Network-assisted UE detection in direct mode UE-to-UE communication
CN112219437A (en) Communication method, terminal, communication node, communication device, and storage medium
EP3583806B1 (en) Prs power pattern
EP3925143A1 (en) System and method to allocate positioning reference signals in a communication system
WO2020220910A1 (en) Method and apparatus for handling sidelink reports
JP7434332B2 (en) Method and apparatus for two-step random access procedure
US11910349B2 (en) Physical layer signaling by devices for requesting positioning-resources
CN116671201A (en) Method and related device for configuring uplink reference signal resource
US20220369271A1 (en) Positioning procedures for user equipments in inactive state
WO2017166203A1 (en) Method for user equipment (ue) to access network, network device and first ue
TW202236894A (en) Node and method in a wireless communications network
CN116156521A (en) Communication method and device
WO2023087831A1 (en) Communication method and apparatus
WO2024082849A1 (en) Communication method and apparatus
US20230125160A1 (en) Sidelink Positioning Architecture for Wireless Communications
CN113228808B (en) Method, base station and terminal equipment for two-step random access procedure
WO2024031464A1 (en) Sidelink positioning reference signal transmission for wireless communications
CN116569618A (en) Positioning measurement method and device
JP2024518669A (en) On-Demand SIB Delivery Using SDT
CN116980821A (en) Communication method and related device
EP4364484A2 (en) User equipment positioning in rrc inactive and rrc idle states
KR20220024598A (en) Scheduling Request Prioritization
EP4338533A1 (en) Systems and methods for early indication for multiple features
CN113747446A (en) Communication method and device
CN117278932A (en) Positioning method, positioning device, storage medium and chip

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication