CN110913327A

CN110913327A - Method and device for transmitting positioning auxiliary information

Info

Publication number: CN110913327A
Application number: CN201811075160.7A
Authority: CN
Inventors: 傅婧; 全海洋
Original assignee: China Academy of Telecommunications Technology CATT
Current assignee: Datang Mobile Communications Equipment Co Ltd
Priority date: 2018-09-14
Filing date: 2018-09-14
Publication date: 2020-03-24

Abstract

The invention provides a method and a device for transmitting positioning auxiliary information, which are used for saving the network overhead for transmitting the positioning auxiliary information and simultaneously enabling a non-connected UE to obtain the positioning auxiliary information more quickly. The method comprises the following steps: the method comprises the steps that UE receives scheduling information of at least one piece of positioning auxiliary information broadcasted by a RAN side node in SI, wherein the positioning auxiliary information is used for positioning measurement and/or positioning calculation of the UE; the UE determines whether first positioning auxiliary information required by the UE is broadcasted or not according to the scheduling information; if the UE determines that the first positioning auxiliary information is being broadcast, receiving the first positioning auxiliary information according to the scheduling information; if the UE determines that the first positioning assistance information is not broadcasted, a request is initiated to the RAN-side node, so that the RAN-side node broadcasts the first positioning assistance information.

Description

Method and device for transmitting positioning auxiliary information

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a method and an apparatus for transmitting positioning assistance information.

Background

Currently, when a User Equipment (UE) performs positioning, some positioning assistance information needs to be received from a network side to perform positioning measurement and/or positioning calculation.

However, in the prior art, the number of bits (bits) occupied by the positioning assistance information is large, and the updating speed is also high, so that a large network overhead is brought to the transmission of the positioning assistance information; meanwhile, the positioning auxiliary information is transmitted through a dedicated signaling, so that the non-connected UE needs to switch to the connected UE first to obtain the corresponding positioning auxiliary information, and the positioning speed is slow.

Disclosure of Invention

Embodiments of the present invention provide a method and an apparatus for transmitting positioning assistance information, so as to save network overhead for transmitting positioning assistance information and enable a non-connected UE to obtain positioning assistance information more quickly.

In a first aspect, an embodiment of the present invention provides a method for transmitting positioning assistance information, including:

a user terminal (UE) receives scheduling information of at least one piece of positioning auxiliary information broadcasted by a Radio Access Network (RAN) side node in a system message (SI), wherein the positioning auxiliary information is used for positioning measurement and/or positioning calculation of the UE;

the UE determines whether first positioning auxiliary information required by the UE is broadcasted or not according to the scheduling information;

if the UE determines that the first positioning auxiliary information is being broadcast, receiving the first positioning auxiliary information according to the scheduling information;

if the UE determines that the first positioning assistance information is not broadcasted, a request is initiated to the RAN-side node, so that the RAN-side node broadcasts the first positioning assistance information.

In this embodiment, a RAN-side node broadcasts scheduling information of at least one piece of positioning assistance information in an SI, a UE determines whether first positioning assistance information required by the UE is being broadcast according to the scheduling information broadcast by the RAN-side node, and if the required first positioning assistance information is not being broadcast, the UE initiates a request to the RAN-side node to prompt the RAN-side node to broadcast the first positioning assistance information of the UE. In this way, the RAN side node can broadcast the positioning assistance information required by the UE as needed based on the UE request, thereby saving network overhead, and simultaneously enabling the non-connected UE to obtain the positioning assistance information without entering the connected state, thereby improving the positioning efficiency of the UE.

Optionally, the receiving, by the UE, scheduling information of at least one positioning assistance information broadcast in the SI by the RAN-side node includes:

the UE receives scheduling information of at least one positioning assistance information broadcasted by the RAN-side node in a system information block SIB1 or in other SIBs.

By the embodiment, the UE can obtain the scheduling information of at least one piece of positioning assistance information in the system information block SIB1 or other SIBs, and further determine whether the first positioning assistance information required by the UE is broadcast, thereby improving the flexibility of network transmission.

Optionally, the scheduling information includes one or more of the following information:

each broadcast period corresponding to the SI including the positioning assistance information;

a list of SIBs in each SI containing positioning assistance information;

each global navigation satellite system GNSS identification corresponding to the SI containing the positioning auxiliary information;

each GNSS identification corresponding to the SIB containing the positioning assistance information;

each enhanced system identifier corresponding to the SI including the positioning assistance information;

each enhanced system identity corresponding to the SIB containing the positioning assistance information;

each type of positioning assistance information corresponding to the SI comprising positioning assistance information;

each SIB including positioning assistance information corresponds to a positioning assistance information type;

whether each SI containing positioning assistance information is being broadcast;

whether each SIB containing positioning assistance information is being broadcast.

The embodiment provides various implementation modes of the scheduling information, and improves the flexibility of positioning auxiliary information transmission.

Optionally, the determining, by the UE, that the first positioning assistance information is not broadcasted includes:

the UE determines that the SI or SIB corresponding to the first positioning auxiliary information is not broadcasted according to the scheduling information; or

And the UE determines that the scheduling information corresponding to the first positioning auxiliary information does not appear.

The embodiment provides a specific implementation mode that the UE determines that the first positioning auxiliary information is not broadcasted, and ensures the reliability of positioning auxiliary information transmission.

Optionally, the UE initiates a request to the RAN-side node, including:

the UE sends a pilot preamble code corresponding to the first positioning auxiliary information to the RAN side node; or

And the UE sends a message carrying specific request content to the RAN side node.

In this embodiment, the UE may send a preamble code or a message carrying specific request content to the RAN-side node to request the RAN-side node to broadcast the required first positioning assistance information, so that the flexibility of transmitting the positioning assistance information is improved, and it can be ensured that the UE in the non-connected state can quickly obtain the required positioning assistance data.

Optionally, the correspondence between the preamble code and the positioning assistance information includes:

the identification of a group of GNSS corresponds to a special preamble code; or

The identification of each group of enhancement systems corresponds to a special preamble code; or

Each positioning type corresponds to a dedicated preamble code; or

Each SI including positioning assistance information corresponds to a dedicated preamble code; or

Each GNSS identification corresponds to a special preamble code; or

Each enhancement system identification corresponds to a dedicated preamble code; or

Each GNSS identification is combined with an enhancement system identification to correspond to a special preamble code; or

The SI of all non-broadcasted positioning assistance information corresponds to one dedicated preamble code.

The embodiment provides a specific implementation mode of the corresponding relation between the preamble code and the positioning auxiliary information, and ensures the reliability of the positioning auxiliary information transmission.

Optionally, before the UE sends the preamble code corresponding to the first positioning assistance information to the RAN-side node, the UE further includes:

and the UE receives the corresponding relation between the preamble code broadcasted by the RAN side node in the SI and the positioning auxiliary information.

In this embodiment, the UE determines the corresponding relationship between the preamble code and the positioning auxiliary information based on the SI broadcast by the RAN-side node, and then determines the preamble code corresponding to the first positioning auxiliary information based on the corresponding relationship, thereby ensuring the reliability of transmission of the positioning auxiliary information.

Optionally, the specific request content includes one or more of a type of positioning assistance information, an identity of GNSS, an identity of positioning enhancement system, a positioning type, SI requested by the UE, and SIB requested by the UE.

The embodiment provides multiple implementation modes of specific request content, and ensures the reliability of positioning auxiliary information transmission.

Optionally, after the UE initiates a request to the RAN-side node, the method further includes:

the UE receives scheduling information updated by the RAN side node in SI;

and the UE receives the first positioning auxiliary information broadcasted by the RAN side node according to the updated scheduling information.

In this embodiment, the UE can receive the first positioning assistance information broadcast by the RAN-side node faster according to the updated scheduling information, thereby further improving the positioning efficiency.

In a second aspect, an embodiment of the present invention provides a method for transmitting positioning assistance information, including:

a RAN side node broadcasts scheduling information of at least one piece of positioning auxiliary information in SI, wherein the positioning auxiliary information is used for positioning measurement and/or positioning calculation of UE;

the RAN side node receives a request initiated by the UE and broadcasts first positioning auxiliary information required by the UE according to the request; wherein the request is initiated when the UE determines that the first positioning auxiliary information required by the UE is not broadcasted according to the scheduling information.

Optionally, the scheduling information of the at least one positioning assistance information broadcast by the RAN-side node in the SI includes:

the RAN-side node broadcasts scheduling information for at least one positioning assistance information in SIB1 or other SIBs.

a list of SIBs in each SI containing positioning assistance information;

each GNSS identification corresponding to the SI containing the positioning assistance information;

Optionally, the receiving, by the RAN-side node, the request initiated by the UE includes:

the RAN side node receives a preamble code corresponding to the first positioning auxiliary information sent by the UE; or

And the RAN side node receives a message which is sent by the UE and carries specific request content.

Each positioning type corresponds to a dedicated preamble code; or

Each GNSS identification corresponds to a special preamble code; or

Optionally, before receiving the request initiated by the UE, the RAN-side node further includes:

and the RAN side node corresponds to the preamble code broadcasted in the SI and the positioning auxiliary information.

Optionally, after the RAN-side node receives the request initiated by the UE, the method further includes:

and the RAN side node updates scheduling information in SI so that the UE receives the first positioning auxiliary information broadcasted by the RAN side node according to the updated scheduling information.

In a third aspect, an embodiment of the present invention provides an apparatus for transmitting positioning assistance information, including:

a receiving unit, configured to receive scheduling information of at least one positioning assistance information broadcasted by a RAN-side node in an SI, where the positioning assistance information is used for performing positioning measurement and/or positioning calculation by the apparatus;

the processing unit is used for determining whether the first positioning auxiliary information required by the processing unit is broadcasted or not according to the scheduling information;

a sending unit, configured to initiate a request to the RAN-side node when the processing unit determines that the first positioning assistance information is not broadcasted, so that the RAN-side node broadcasts the first positioning assistance information;

the receiving unit is further configured to: and when the processing unit determines that the first positioning auxiliary information is being broadcast, receiving the first positioning auxiliary information according to the scheduling information.

Optionally, the receiving unit is specifically configured to:

scheduling information of at least one positioning assistance information broadcast by the RAN-side node in SIB1 or other SIBs is received.

a list of SIBs in each SI containing positioning assistance information;

Optionally, the processing unit is specifically configured to:

determining that the first positioning auxiliary information is not broadcasted when it is determined that the SI or SIB corresponding to the first positioning auxiliary information is not broadcasted according to the scheduling information; or

Determining that the first positioning assistance information is not broadcasted when it is determined that scheduling information corresponding to the first positioning assistance information does not occur.

Optionally, the sending unit is specifically configured to:

sending a preamble code corresponding to the first positioning auxiliary information to the RAN side node; or

And sending a message carrying specific request content to the RAN side node.

Each positioning type corresponds to a dedicated preamble code; or

Each GNSS identification corresponds to a special preamble code; or

Optionally, the receiving unit is further configured to:

before the sending unit sends the preamble code corresponding to the first positioning assistance information to the RAN-side node, receiving a correspondence between the preamble code broadcast by the RAN-side node in the SI and the positioning assistance information.

Optionally, the specific request content includes one or more of a type of positioning assistance information, an identification of GNSS, an identification of positioning enhancement system, a positioning type, SI requested by the apparatus, SIB requested by the apparatus.

Optionally, the receiving unit is further configured to:

after the sending unit initiates a request to the RAN side node, receiving scheduling information updated in SI by the RAN side node;

and receiving the first positioning auxiliary information broadcast by the RAN side node according to the updated scheduling information.

In a fourth aspect, an embodiment of the present invention provides an apparatus for transmitting positioning assistance information, including:

a sending unit, configured to broadcast scheduling information of at least one positioning assistance information in an SI, where the positioning assistance information is used for a UE to perform positioning measurement and/or positioning calculation;

a receiving unit, configured to receive a request initiated by the UE;

the sending unit is further configured to: broadcasting first positioning auxiliary information required by the UE according to the request; wherein the request is initiated when the UE determines that the first positioning auxiliary information required by the UE is not broadcasted according to the scheduling information.

Optionally, the sending unit is specifically configured to:

scheduling information for at least one positioning assistance information is broadcast in the SIB1 or other SIBs.

a list of SIBs in each SI containing positioning assistance information;

Optionally, the receiving unit is specifically configured to:

receiving a preamble code corresponding to the first positioning auxiliary information sent by the UE; or

And receiving a message which is sent by the UE and carries the specific request content.

Each positioning type corresponds to a dedicated preamble code; or

Each GNSS identification corresponds to a special preamble code; or

Optionally, the sending unit is further configured to:

before the receiving unit receives the request initiated by the UE, the corresponding relation between the preamble code broadcasted in the SI and the positioning auxiliary information.

Optionally, the sending unit is further configured to:

after the receiving unit receives the request initiated by the UE, updating scheduling information in SI so that the UE receives the first positioning auxiliary information broadcast by the transmitting unit according to the updated scheduling information.

In a fifth aspect, an embodiment of the present invention provides an apparatus for transmitting positioning assistance information, including:

a memory for storing computer instructions;

a communication interface configured to receive scheduling information of at least one positioning assistance information broadcasted by a RAN-side node in an SI, wherein the positioning assistance information is used for positioning measurement and/or positioning calculation by the apparatus;

a processor, communicatively coupled to the memory and the communication interface, configured to execute the computer instructions in the memory, so as to determine whether first positioning assistance information required by the processor is being broadcast according to the scheduling information when the computer instructions are executed;

the communication interface is further configured to: initiating a request to the RAN side node to cause the RAN side node to broadcast the first positioning assistance information when the processor determines that the first positioning assistance information is not broadcast; and when the processor determines that the first positioning auxiliary information is being broadcast, receiving the first positioning auxiliary information according to the scheduling information.

Optionally, the communication interface is specifically configured to:

a list of SIBs in each SI containing positioning assistance information;

Optionally, the processor is specifically configured to:

Optionally, the communication interface is specifically configured to:

And sending a message carrying specific request content to the RAN side node.

Each positioning type corresponds to a dedicated preamble code; or

Each GNSS identification corresponds to a special preamble code; or

Optionally, the communication interface is further configured to:

and receiving the corresponding relation between the preamble code broadcasted by the RAN side node in the SI and the positioning auxiliary information before sending the preamble code corresponding to the first positioning auxiliary information to the RAN side node.

Optionally, the communication interface is further configured to:

after initiating a request to the RAN side node, receiving scheduling information updated in SI by the RAN side node;

In a sixth aspect, an embodiment of the present invention provides an apparatus for transmitting positioning assistance information, including:

a memory for storing computer instructions;

a communication interface for communicating with a UE;

a processor, communicatively coupled to the memory and the communication interface, for executing the computer instructions in the memory to control the communication interface to perform the following operations when executing the computer instructions:

broadcasting scheduling information of at least one positioning assistance information in SI, wherein the positioning assistance information is used for positioning measurement and/or positioning calculation by the UE;

receiving a request initiated by the UE;

broadcasting first positioning auxiliary information required by the UE according to the request; wherein the request is initiated when the UE determines that the first positioning auxiliary information required by the UE is not broadcasted according to the scheduling information.

Optionally, the communication interface is specifically configured to:

a list of SIBs in each SI containing positioning assistance information;

Optionally, the communication interface is specifically configured to:

Each positioning type corresponds to a dedicated preamble code; or

Each GNSS identification corresponds to a special preamble code; or

Optionally, the communication interface is further configured to:

and before receiving the request initiated by the UE, the corresponding relation between the preamble code broadcasted in the SI and the positioning auxiliary information.

Optionally, the communication interface is further configured to:

after receiving the request initiated by the UE, updating scheduling information in SI, so that the UE receives the first positioning assistance information broadcasted by the communication interface according to the updated scheduling information.

In a seventh aspect, an embodiment of the present invention provides a computer-readable storage medium, which stores computer instructions, and when the computer instructions are executed on a computer, the computer is caused to execute the method according to the first aspect of the embodiment of the present invention.

In an eighth aspect, the embodiment of the present invention provides a computer-readable storage medium, which stores computer instructions that, when executed on a computer, cause the computer to perform the method according to the second aspect of the embodiment of the present invention.

One or more technical solutions provided in the embodiments of the present invention have at least the following technical effects or advantages:

the RAN side node broadcasts scheduling information of at least one piece of positioning auxiliary information in the SI, the UE determines whether first positioning auxiliary information required by the UE is being broadcast according to the scheduling information broadcast by the RAN side node, and if the required first positioning auxiliary information is not being broadcast, the UE initiates a request to the RAN side node to prompt the RAN side node to broadcast the first positioning auxiliary information of the UE. In this way, the RAN side node can broadcast the positioning assistance information required by the UE as needed based on the UE request, thereby saving network overhead, and simultaneously enabling the non-connected UE to obtain the positioning assistance information without entering the connected state, thereby improving the positioning efficiency of the UE.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.

FIG. 1 is a schematic diagram of a 5G system positioning architecture in the prior art;

fig. 2 is a flowchart illustrating a method for transmitting positioning assistance information according to an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of an apparatus for transmitting positioning assistance information according to an embodiment of the present invention;

FIG. 4 is a schematic structural diagram of an apparatus for transmitting positioning assistance information according to an embodiment of the present invention;

FIG. 5 is a block diagram illustrating an apparatus for transmitting positioning assistance information according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of an apparatus for transmitting positioning assistance information according to an embodiment of the present invention.

Detailed Description

The technical solutions of the present invention are described in detail below with reference to the drawings and the specific embodiments, and it should be understood that the specific features in the embodiments and the embodiments of the present invention are not intended to limit the technical solutions of the present invention, but may be combined with each other without conflict.

The embodiment of the invention can be applied to a 5G system; the present invention is also applicable to other wireless communication systems, such as Long Term Evolution (LTE) System, Global System for Mobile communication (GSM) System, Mobile communication System (UMTS), Code Division Multiple Access (CDMA) System, and new network equipment System.

The user terminal UE according to the embodiments of the present invention may be a device providing voice and/or data connectivity to a user, a handheld device having a wireless connection function, or another processing device connected to a wireless modem. Wireless user terminals, which may be mobile terminals such as mobile telephones (or "cellular" telephones) and computers having mobile terminals, such as portable, pocket, hand-held, computer-included, or vehicle-mounted mobile devices, may communicate with one or more core networks via a Radio Access Network (RAN), and may exchange language and/or data with the RAN. Examples of such devices include Personal Communication Service (PCS) phones, cordless phones, Session Initiation Protocol (SIP) phones, Wireless Local Loop (WLL) stations, Personal Digital Assistants (PDAs), and the like. A wireless User Terminal may also be referred to as a system, a Subscriber Unit (Subscriber Unit), a Subscriber Station (Subscriber Station), a Mobile Station (Mobile), a Remote Station (Remote Station), an Access Point (Access Point), a Remote Terminal (Remote Terminal), an Access Terminal (Access Terminal), a User Terminal (User Terminal), a User agent (User agent), and a User Device.

A base station according to embodiments of the present invention may be configured to interconvert received air frames and IP packets as a router between a wireless terminal device and a remainder of an access network, where the remainder of the access network may include an Internet Protocol (IP) network device. The base station may also coordinate management of attributes for the air interface. For example, the Base Station may be a network device in a 5G system, such as a Next generation Base Station (gNB), a Base Transceiver Station (BTS) in a global system for Mobile Communication (GSM) or Code Division Multiple Access (CDMA), a Base Station (NodeB) in a Wideband Code Division Multiple Access (WCDMA), or an evolved Node B (eNB) in LTE, which is not limited in the embodiments of the present invention.

It is to be understood that the terms first, second, and the like in the description of the embodiments of the invention are used for distinguishing between the descriptions and not necessarily for describing a sequential or chronological order. "plurality" in the description of the embodiments of the present invention means two or more.

The term "and/or" in the embodiment of the present invention is only one kind of association relationship describing an associated object, and indicates that three relationships may exist, for example, a and/or B may indicate: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

Location Based Services (LBS) is a service that obtains terminal Location information through a wireless communication network or other Location systems, and provides various information related to the Location for a user in combination with a geographic information system. To date, Global Navigation Satellite System (GNSS) -based outdoor positioning technology (i.e., beidou Satellite positioning technology) has been widely applied in various fields, including current UEs.

Currently, when a UE performs positioning, it needs to receive some positioning assistance information from a network side to perform positioning measurement and/or positioning calculation. Fig. 1 is a current 5G system positioning architecture, in which the functional entities related to positioning are as follows:

a Location Management Function (LMF); an access control and mobility management entity (AMF); an evolved eNB (Nextgeneration-eNB, ng-eNB) is connected to the 5G core network, and can provide positioning reference information, positioning measurement results, and the like; 5G base station gNB: providing positioning measurement information for the UE or interacting positioning related information with the LMF; a Location management entity (E-SMLC) in the 4G system; user plane location service Platform (SLP); the Radio interface of LTE (Long Term Evolution-The Radio interface between UTRAN and The User Equipment, LTE-Uu); NR Radio Access-the Radio interface between UTRAN and the User Equipment, NR-Uu; a control plane interface (NG-RAN and 5GC, NG-C) between the 5G base station and the core network; interfaces between AMF and LMF (Reference point between an AMF and LMF, NLs); transmission Point (TP).

In the current 5G NR, the positioning procedure of the UE has not been discussed yet. When the UE performs positioning, it needs to receive some positioning assistance data from the network side to assist positioning measurement and/or positioning calculation. The positioning assistance data may occupy a larger bit ratio, and the updating change is faster (may be updated once in 1 s), so that a great network overhead is brought to the transmission of the positioning assistance information; meanwhile, the positioning auxiliary information is transmitted through a dedicated signaling, so that the non-connected UE needs to switch to the connected UE first to obtain the corresponding positioning auxiliary information, and the positioning speed is slow.

In view of this, embodiments of the present invention provide a method and an apparatus for transmitting positioning assistance information, which trigger a RAN side to broadcast positioning assistance data required by a UE in a UE request manner, thereby saving network overhead and enabling a non-connected UE to obtain positioning assistance information more quickly.

Referring to fig. 2, the method of transmitting positioning assistance information includes:

s11: the method comprises the steps that UE receives scheduling information of at least one piece of positioning auxiliary information broadcasted by a node at the Radio Access Network (RAN) side in a system message (Systeminformation, SI);

specifically, the Access Stratum (AS) of the UE may request the AS layer of the UE to receive scheduling information in the SI based on a higher layer request, such AS a location-related application layer.

The RAN-side node may specifically be a System Information Block (SIB) that broadcasts scheduling Information of the at least one piece of positioning assistance Information, such as SIB1 or other SIBs, and the embodiment of the present invention is not limited in particular. Wherein, the meaning corresponding to each SIB may be predefined, or the network side notifies the UE through a higher layer positioning related protocol, which is not limited in the embodiments of the present invention.

The positioning assistance information is information used for the UE to perform positioning measurement and/or positioning calculation. The positioning assistance information may specifically comprise one or more of the following information: 1) each broadcast period corresponding to the SI including the positioning assistance information; 2) a list of SIBs in each SI containing positioning assistance information; 3) each global navigation satellite system GNSS identification corresponding to the SI containing the positioning auxiliary information; 4) each GNSS identification corresponding to the SIB containing the positioning assistance information; 5) each enhanced system identifier corresponding to the SI including the positioning assistance information; 6) each type of positioning assistance information corresponding to the SI comprising positioning assistance information; 7) each SIB including positioning assistance information corresponds to a positioning assistance information type; 8) each enhanced system identity corresponding to the SIB containing the positioning assistance information; 9) whether each SI containing positioning assistance information is being broadcast and whether each SIB containing positioning assistance information is being broadcast.

S12: the UE determines whether first positioning auxiliary information required by the UE is broadcasted or not according to the scheduling information;

specifically, when the UE determines that the SI or SIB corresponding to the first positioning assistance information is not broadcasted according to the scheduling information broadcasted by the RAN-side node, or determines that the scheduling information corresponding to the first positioning assistance information does not appear, it determines that the first positioning assistance information required by the UE is not broadcasted.

If yes, go to step S13; if not, go to step S14;

s13: the UE receives first positioning auxiliary information according to the scheduling information;

s14: the UE initiates a request to a RAN-side node to cause the RAN-side node to broadcast the first positioning assistance information.

In a specific implementation process, a manner of initiating the request to the RAN-side node by the UE may be to send a dedicated pilot preamble code to the RAN-side node, or may also be to send a message carrying specific request content to the RAN-side node, which is not limited in the embodiment of the present invention.

When the UE initiates the request to the RAN-side node in a manner of sending a dedicated pilot preamble code to the RAN-side node, the UE sends the pilot preamble code corresponding to the first positioning assistance information to the RAN-side node.

The correspondence between the preamble code and the positioning assistance information may be any one or more of the following correspondence: 1) the identification of a group of GNSS corresponds to a special preamble code; 2) the identification of each group of enhancement systems corresponds to a special preamble code; 3) each positioning type corresponds to a dedicated preamble code; 4) each SI including positioning assistance information corresponds to a dedicated preamble code; 5) each GNSS identification corresponds to a special preamble code; 6) each enhancement system identification corresponds to a dedicated preamble code; 7) each GNSS identification is combined with an enhancement system identification to correspond to a special preamble code; 8) the SI of all non-broadcasted positioning assistance information corresponds to one dedicated preamble code.

The corresponding relationship between the preamble code and the positioning assistance information may be predefined, or the network side notifies the UE, which is not limited in the embodiments of the present invention. For example, before the UE sends the preamble code corresponding to the first positioning assistance information to the RAN-side node, the RAN-side node determines the pilot preamble code corresponding to the first positioning assistance information based on the correspondence between the preamble code broadcast by the RAN-side node and the positioning assistance information.

When the UE initiates the request to the RAN-side node in a manner of sending a message carrying specific request content to the RAN-side node, the message carrying the specific request content may be a Radio Resource Control (RRC) message or a Medium Access Control (MAC) message, which is not limited in the embodiments of the present invention. The specific request content may be a type of positioning assistance information, an identifier of GNSS, an identifier of positioning enhancement system, a positioning type, SI requested by UE, SIB requested by UE, and the like, which is not limited in the embodiment of the present invention.

Correspondingly, after receiving the request sent by the UE, the RAN-side node broadcasts the SI corresponding to the first positioning assistance information to the UE. As an optional manner, after receiving the request sent by the UE, the RAN-side node may further update the scheduling information related to the positioning assistance information in step S11.

Further, after initiating the request to the RAN-side node, the UE receives the SI corresponding to the first positioning assistance information broadcast by the RAN-side node, and obtains the required first positioning assistance information. If the RAN-side node further updates the scheduling information in the SI, the UE may specifically receive the first positioning assistance information broadcast by the RAN-side node according to the updated scheduling information.

In the embodiment of the invention, a RAN side node broadcasts scheduling information of at least one piece of positioning auxiliary information in SI, UE determines whether first positioning auxiliary information required by the UE is being broadcast according to the scheduling information broadcast by the RAN side node, and if the required first positioning auxiliary information is not broadcast, the UE initiates a request to the RAN side node to prompt the RAN side node to broadcast the first positioning auxiliary information of the UE. In this way, the RAN side node can broadcast the positioning assistance information required by the UE as needed based on the UE request, thereby saving network overhead, and simultaneously enabling the non-connected UE to obtain the positioning assistance information without entering the connected state, thereby improving the positioning efficiency of the UE.

In order to facilitate a clearer understanding of the technical solution of the present invention, two possible complete embodiments are illustrated in detail below:

example 1:

RAN side node broadcasts positioning auxiliary information, and UE sends a request to the RAN side node through preamble for the positioning auxiliary information which is not broadcast by the RAN side node. The specific implementation process comprises the following steps:

step A1: RAN side nodes broadcast scheduling information of the positioning auxiliary information in the SI;

the scheduling information comprises one or more of the following information: a broadcast period corresponding to each SI including positioning assistance information; a list of SIBs in each SI including positioning assistance information, wherein the meaning of each SIB may be predefined (e.g., SIBx is GNSS ephemeris model assistance data) or informed to the UE via a higher layer positioning related protocol (e.g., SIBx corresponds to an index k, meaning of index k, LMF informs the UE via a higher layer protocol in advance); each SI including Positioning assistance information or each GNSS identifier corresponding to an SIB related to Positioning indicates, for example, whether the SI or the SIB is a Global Positioning System (GPS) or a beidou Positioning System (beidou Positioning System) by the identifier; an enhanced System identifier corresponding to each SI including positioning assistance information or each SIB including positioning assistance information, for example, whether the SI or SIB is a WAAS System (a System for air navigation) or an enhanced System corresponding to beidou by an identifier, or whether the SI or SIB is an SBAS (Satellite based Augmentation System, wide area differential Augmentation System) by an identifier; a positioning assistance information type corresponding to each SI including positioning assistance information, for example, SIx corresponds to OTDOA positioning data, SIy corresponds to GPS assistance data, and the like; each SIB including positioning assistance information corresponds to a positioning assistance information type; whether SI or SIB required by the UE is being broadcast.

Step A2: the AS layer of the UE receives positioning related auxiliary information required by the UE in the SI based on the high-level request;

if the SI corresponding to the positioning-related assistance information required by the UE is being broadcast, the AS layer of the UE determines the starting point of the SI window where the required positioning-assistance information appears based on the scheduling information in step a1, and starts to monitor and receive the required positioning-assistance information;

if the scheduling information indicates that the SI or SIB corresponding to the positioning related assistance information required by the UE is not broadcast, the UE sends a preamble code in the random access process to initiate a request to the RAN-side node, so as to prompt the RAN-side node to broadcast the SI corresponding to the required positioning related assistance information.

The corresponding relationship between the Preamble code and the positioning auxiliary information may be any one of the following:

the identification of each group of GNSS or the identification of each group of enhancement system corresponds to a special preamble code;

each positioning type corresponds to a dedicated preamble code, for example, GNSS assistance data and OTDOA assistance data correspond to different dedicated preamble codes respectively;

each SI including the positioning auxiliary information corresponds to a special preamble code;

each GNSS identification corresponds to a special preamble code;

each enhancement system identification corresponds to a dedicated preamble code.

Step A3: the RAN side node determines that the UE needs the SI corresponding to certain positioning auxiliary information or some SIs according to the received preamble code; RAN side node sends acknowledgement (ack) message to UE to inform UE of receiving sending request and sending SI(s) requested by UE; optionally, the RAN side updates the scheduling information in step a1 at the same time, for example, sets the corresponding si(s) to be broadcast, or updates the related information of si(s) to the scheduling information;

step A4: after receiving the response fed back by the RAN side node, the UE receives the required positioning auxiliary information; and delivering the received positioning auxiliary information to a high layer, and performing positioning related operation by the high layer.

Optionally, the UE may determine the position where the required si(s) appears according to the updated scheduling information, and receive the required positioning assistance information.

In this embodiment, the RAN-side node does not need to broadcast all the positioning assistance data, for example, for differential assistance information required by the beidou positioning enhancement system, in the prior art, the differential assistance information required by the beidou positioning enhancement system is updated frequently, for example, 10s is updated once, but the RAN-side node in this embodiment may not broadcast the differential assistance information all the time, but broadcast the differential assistance information only when receiving a request from the UE for the differential assistance information. By this way, the network side can save some air interface overhead. Meanwhile, the broadcast mode is adopted to broadcast the positioning auxiliary information, and the preamble code sending mode is adopted to request the required positioning auxiliary information, so that the UE in the non-connection state can be ensured to quickly obtain the required positioning auxiliary information.

Example 2:

and the RAN side node broadcasts the positioning auxiliary information, and the UE sends a request to the RAN side node through a message carrying specific request content for the positioning auxiliary information which is not broadcasted. The specific implementation process comprises the following steps:

step B1: RAN side nodes broadcast scheduling information related to the positioning auxiliary information in the SI;

the scheduling information comprises one or more of the following information: a broadcast period corresponding to each SI including positioning assistance information; a list of SIBs in each SI including positioning assistance information, wherein the meaning of each SIB may be predefined (e.g., SIBx is GNSS ephemeris model assistance data) or informed to the UE via a higher layer positioning related protocol (e.g., SIBx corresponds to an index k, meaning of index k, LMF informs the UE via a higher layer protocol in advance); each SI including positioning assistance information or each SI including a GNSS identifier corresponding to a positioning-related SIB, such as indicating whether the SI or SIB is a GPS system or a beidou positioning system by the identifier; an enhanced system identifier corresponding to each SI including the positioning assistance information or each SIB including the positioning assistance information, for example, whether the SI or the SIB is the enhanced system corresponding to the WAAS system or the beidou system is indicated by the identifier; whether the SI required by the UE is being broadcast.

Step B2: the AS layer of the UE receives positioning related auxiliary information required by the UE in the SI based on the high-level request;

if the SI corresponding to the positioning-related assistance information required by the UE is being broadcast, the AS layer of the UE determines the starting point of the SI window where the required positioning-assistance information appears based on the scheduling information in step B1, and starts to monitor and receive the required positioning-assistance information;

if the scheduling information broadcasted in step B1 does not include the scheduling information corresponding to the positioning assistance information required by the UE (for example, the scheduling information related to the positioning assistance information in the SIB does not include the scheduling information of the beidou positioning enhancement system differential assistance information required by the UE), the UE sends a message carrying specific request content to initiate a request to the RAN-side node, so as to prompt the RAN-side node to broadcast the SI corresponding to the required positioning assistance information.

The message carrying the specific request content may be an RRC message or an MAC message, which is not limited herein. The message carrying the specific request content may include one or more of the following information: types corresponding to positioning Assistance Data, such as GNSS common Assistance Data, GNSS Generic Assistance Data, OTDOA Assistance Data, and the like; an identification of the GNSS; an identification of a location enhancement system; a positioning type, such as OTDOA positioning, WLAN positioning, etc.; SI requested by UE.

Step B3: the RAN side node determines that the UE needs the SI corresponding to the positioning auxiliary information or some SIs according to the received request message; the RAN side node sends an ack message to the UE to inform the UE of receiving a sending request of the UE and sending the SI(s) requested by the UE;

optionally, the RAN side updates the scheduling information in step B1 at the same time, for example, sets the corresponding si(s) to be broadcast, or updates the related information of si(s) to the scheduling information;

step B4: after receiving the response fed back by the RAN side node, the UE receives the required positioning auxiliary information; and delivering the received positioning auxiliary information to a high layer, and performing positioning related operation by the high layer.

In this embodiment, the RAN-side node may broadcast the positioning assistance information as needed according to the request of the UE, and the network side may save air interface overhead; meanwhile, the RAN side node informs the UE of the positioning auxiliary information in a broadcasting mode, and the UE requests the required positioning auxiliary information in a mode of sending a message carrying specific request content, so that the UE in a non-connection state can be ensured to quickly obtain the required positioning auxiliary information.

Based on the same inventive concept, an embodiment of the present invention further provides an apparatus for transmitting positioning assistance information, with reference to fig. 3, including:

a receiving unit 21, configured to receive scheduling information of at least one positioning assistance information broadcasted by a RAN-side node in an SI, where the positioning assistance information is used for performing positioning measurement and/or positioning calculation by the apparatus;

a processing unit 22, configured to determine whether first positioning auxiliary information required by itself is being broadcast according to the scheduling information;

a sending unit 23, configured to initiate a request to the RAN-side node to enable the RAN-side node to broadcast the first positioning assistance information when the processing unit 22 determines that the first positioning assistance information is not broadcasted;

the receiving unit 21 is further configured to: when the processing unit 22 determines that the first positioning assistance information is being broadcast, the first positioning assistance information is received according to the scheduling information.

Optionally, the receiving unit 21 is specifically configured to:

a list of SIBs in each SI containing positioning assistance information;

Optionally, the processing unit 22 is specifically configured to:

Optionally, the sending unit 23 is specifically configured to:

And sending a message carrying specific request content to the RAN side node.

Each positioning type corresponds to a dedicated preamble code; or

Each GNSS identification corresponds to a special preamble code; or

Optionally, the receiving unit 21 is further configured to:

before the sending unit 23 sends the preamble code corresponding to the first positioning assistance information to the RAN-side node, receiving a correspondence between the preamble code broadcast by the RAN-side node in the SI and the positioning assistance information.

Optionally, the receiving unit 21 is further configured to:

after the sending unit 23 initiates a request to the RAN-side node, receiving scheduling information updated in SI by the RAN-side node;

The method and the device of the present invention are based on the same inventive concept, and because the principles of solving the problems of the method and the device are similar, the specific implementation manner of the operations executed by the above units may refer to the corresponding steps executed by the UE in the above method for transmitting the positioning assistance information according to the embodiment of the present invention, so the implementation of the device and the method may be referred to each other, and the repeated parts are not described again.

Based on the same inventive concept, an embodiment of the present invention further provides an apparatus for transmitting positioning assistance information, with reference to fig. 4, including:

a sending unit 31, configured to broadcast scheduling information of at least one positioning assistance information in the SI, where the positioning assistance information is used for positioning measurement and/or positioning calculation by the UE;

a receiving unit 32, configured to receive the request initiated by the UE;

the sending unit 31 is further configured to: broadcasting first positioning auxiliary information required by the UE according to the request; wherein the request is initiated when the UE determines that the first positioning auxiliary information required by the UE is not broadcasted according to the scheduling information.

Optionally, the sending unit 31 is specifically configured to:

a list of SIBs in each SI containing positioning assistance information;

Optionally, the receiving unit 32 is specifically configured to:

Each positioning type corresponds to a dedicated preamble code; or

Each GNSS identification corresponds to a special preamble code; or

Optionally, the sending unit 31 is further configured to:

before the receiving unit 32 receives the request initiated by the UE, the preamble code broadcasted in the SI corresponds to the positioning assistance information.

Optionally, the sending unit 31 is further configured to:

after the receiving unit 32 receives the request initiated by the UE, the scheduling information is updated in the SI, so that the UE receives the first positioning assistance information broadcast by the transmitting unit 31 according to the updated scheduling information.

The method and the device of the present invention are based on the same inventive concept, and because the principles of solving the problems of the method and the device are similar, the specific implementation manner of the operations executed by the above units may refer to the corresponding steps executed by the RAN-side node in the above method for transmitting positioning assistance information according to the embodiment of the present invention, so the implementation of the device and the method may be referred to each other, and the repeated parts are not described again.

Based on the same inventive concept, an embodiment of the present invention further provides an apparatus for transmitting positioning assistance information, with reference to fig. 5, including:

a memory 41 for storing computer instructions;

a communication interface 42, configured to receive scheduling information of at least one positioning assistance information broadcasted by a RAN-side node in the SI, where the positioning assistance information is used for positioning measurement and/or positioning calculation by the apparatus;

a processor 43, communicatively connected to the memory 41 and the communication interface 42, for executing the computer instructions in the memory 41, so as to determine whether the first positioning assistance information required by the processor is being broadcast according to the scheduling information when the computer instructions are executed;

the communication interface 42 is further configured to: initiating a request to the RAN-side node to cause the RAN-side node to broadcast the first positioning assistance information when the processor 43 determines that the first positioning assistance information is not broadcast; when the processor 43 determines that the first positioning assistance information is being broadcast, the first positioning assistance information is received according to the scheduling information.

Optionally, the communication interface 42 is specifically configured to:

a list of SIBs in each SI containing positioning assistance information;

Optionally, the processor 43 is specifically configured to:

Optionally, the communication interface 42 is specifically configured to:

And sending a message carrying specific request content to the RAN side node.

Each positioning type corresponds to a dedicated preamble code; or

Each GNSS identification corresponds to a special preamble code; or

Optionally, the communication interface 42 is further configured to:

Based on the same inventive concept, an embodiment of the present invention further provides an apparatus for transmitting positioning assistance information, with reference to fig. 6, including:

a memory 51 for storing computer instructions;

a communication interface 52 for communicating with the UE;

a processor 53, communicatively connected to the memory 51 and the communication interface 52, for executing the computer instructions in the memory 51, so as to control the communication interface 52 to perform the following operations when executing the computer instructions:

receiving a request initiated by the UE;

Optionally, the communication interface 52 is specifically configured to:

a list of SIBs in each SI containing positioning assistance information;

Optionally, the communication interface 52 is specifically configured to:

Each positioning type corresponds to a dedicated preamble code; or

Each GNSS identification corresponds to a special preamble code; or

Optionally, the communication interface 52 is further configured to:

after receiving the UE-initiated request, updating scheduling information in SI, so that the UE receives the first positioning assistance information broadcast by the communication interface 52 according to the updated scheduling information.

Based on the same inventive concept, an embodiment of the present invention further provides a computer-readable storage medium, where the computer-readable storage medium stores computer instructions, and when the computer instructions are executed on a computer, the computer is caused to execute the method performed by the RAN-side node according to the embodiment of the present invention.

Based on the same inventive concept, an embodiment of the present invention further provides a computer-readable storage medium, where the computer-readable storage medium stores computer instructions, and when the computer instructions are executed on a computer, the computer is caused to execute the method performed by the UE according to the embodiment of the present invention.

As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.

The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. A method of transmitting positioning assistance information, comprising:

2. The method of claim 1, wherein the UE receiving scheduling information of at least one positioning assistance information broadcast in the SI by a RAN-side node comprises:

3. The method of claim 1, wherein the scheduling information comprises one or more of:

a list of SIBs in each SI containing positioning assistance information;

4. The method of claim 1, wherein the UE determining that the first positioning assistance information is not broadcast comprises:

5. The method of claim 1, wherein the UE initiates a request to the RAN-side node, comprising:

6. The method of claim 5, wherein the correspondence between preamble codes and positioning assistance information comprises:

Each positioning type corresponds to a dedicated preamble code; or

Each GNSS identification corresponds to a special preamble code; or

7. The method of claim 5, wherein before the UE sends the preamble code corresponding to the first positioning assistance information to the RAN-side node, the method further comprises:

8. The method of claim 5, wherein the specific request content includes one or more of a type of positioning assistance information, an identification of a GNSS, an identification of a positioning enhancement system, a positioning type, an SI requested by the UE, an SIB requested by the UE.

9. The method of any one of claims 1-8, wherein after the UE initiates the request to the RAN-side node, further comprising:

the UE receives scheduling information updated by the RAN side node in SI;

10. A method of transmitting positioning assistance information, comprising:

11. The method of claim 10, wherein the scheduling information of the at least one positioning assistance information broadcast by the RAN-side node in the SI comprises:

12. The method of claim 10, wherein the scheduling information comprises one or more of:

a list of SIBs in each SI containing positioning assistance information;

13. The method of claim 10, wherein the RAN-side node receiving the UE-initiated request comprises:

14. The method of claim 13, wherein the mapping between preamble codes and positioning assistance information comprises:

Each positioning type corresponds to a dedicated preamble code; or

Each GNSS identification corresponds to a special preamble code; or

15. The method of claim 13, wherein the RAN-side node, prior to receiving the UE-initiated request, further comprises:

16. The method of claim 13, wherein the specific request content includes one or more of a type of positioning assistance information, an identification of a GNSS, an identification of a positioning enhancement system, a positioning type, an SI requested by the UE, an SIB requested by the UE.

17. The method of any of claims 10-16, wherein after the RAN-side node receives the UE-initiated request, further comprising:

18. An apparatus for transmitting positioning assistance information, comprising:

a memory for storing computer instructions;

19. The apparatus of claim 18, wherein the communication interface is specifically configured to:

20. The apparatus of claim 18, wherein the scheduling information comprises one or more of:

a list of SIBs in each SI containing positioning assistance information;

21. The apparatus of claim 18, wherein the processor is specifically configured to:

22. The apparatus of claim 18, wherein the communication interface is specifically configured to:

And sending a message carrying specific request content to the RAN side node.

23. The apparatus of claim 22, wherein the correspondence between preamble codes and positioning assistance information comprises:

Each positioning type corresponds to a dedicated preamble code; or

Each GNSS identification corresponds to a special preamble code; or

24. The apparatus of claim 22, wherein the communication interface is further to:

25. The apparatus of claim 22, wherein the specific request content comprises one or more of a type of positioning assistance information, an identification of a GNSS, an identification of a positioning enhancement system, a type of positioning, an SI requested by the apparatus, an SIB requested by the apparatus.

26. The apparatus of any of claims 18-25, wherein the communication interface is further to:

27. An apparatus for transmitting positioning assistance information, comprising:

a memory for storing computer instructions;

a communication interface for communicating with a UE;

receiving a request initiated by the UE;

28. The apparatus of claim 27, wherein the communication interface is specifically configured to:

29. The apparatus of claim 27, wherein the scheduling information comprises one or more of:

a list of SIBs in each SI containing positioning assistance information;

30. The apparatus of claim 27, wherein the communication interface is specifically configured to:

31. The apparatus of claim 30, wherein the mapping of preamble codes to positioning assistance information comprises:

Each positioning type corresponds to a dedicated preamble code; or

Each GNSS identification corresponds to a special preamble code; or

32. The apparatus of claim 30, wherein the communication interface is further for:

33. The apparatus of claim 30, wherein the specific request content includes one or more of a type of positioning assistance information, an identification of a GNSS, an identification of a positioning enhancement system, a positioning type, an SI requested by the UE, an SIB requested by the UE.

34. The apparatus of any of claims 27-33, wherein the communication interface is further to:

35. An apparatus for transmitting positioning assistance information, comprising:

36. An apparatus for transmitting positioning assistance information, comprising:

a receiving unit, configured to receive a request initiated by the UE;

37. A computer-readable storage medium having stored thereon computer instructions which, when executed on a computer, cause the computer to perform the method of any one of claims 1-9.

38. A computer-readable storage medium having stored thereon computer instructions which, when executed on a computer, cause the computer to perform the method of any one of claims 10-17.