CN110381578B

CN110381578B - User equipment positioning method and device, access network equipment and readable storage medium

Info

Publication number: CN110381578B
Application number: CN201910583684.5A
Authority: CN
Inventors: 钟梓滢; 刘震; 区洋
Original assignee: Comba Network Systems Co Ltd
Current assignee: Comba Network Systems Co Ltd
Priority date: 2019-07-01
Filing date: 2019-07-01
Publication date: 2021-09-24
Anticipated expiration: 2039-07-01
Also published as: CN110381578A

Abstract

The application relates to a user equipment positioning method, a device, a host unit, an extension unit, an access network device and a readable storage medium. The method comprises the following steps: the access network equipment sends a synchronous broadcast block to idle user equipment according to preset random access configuration information; the random access configuration information includes: a first mapping relationship of the remote unit to the synchronized broadcast block, and a second mapping relationship of the synchronized broadcast block to the preamble resource; the access network equipment comprises a plurality of remote units; the access network equipment receives the preamble data sent by the user equipment; and the access network equipment positions the user equipment according to the random access configuration information and the preamble data. By adopting the method, the idle user equipment can be positioned.

Description

User equipment positioning method and device, access network equipment and readable storage medium

Technical Field

The present application relates to the field of communications technologies, and in particular, to a method and an apparatus for locating a user equipment, a host unit, an extension unit, an access network device, and a readable storage medium.

Background

At present, in order to improve a signal coverage, a base station system is proposed, which includes: a host unit, a plurality of expansion units, and a plurality of remote units. The host unit is in communication connection with a plurality of expansion units, and one expansion unit is in communication connection with a plurality of remote units.

In the conventional technology, in order to implement high-quality uplink and downlink communication with User Equipment (UE), a base station system needs to implement accurate positioning of the UE in advance, and generally locates the UE through a Sounding Reference Signal (SRS) uploaded by a UE that is randomly accessed, that is, a remote unit with the best service quality of the UE is determined, and generally the remote unit closest to the UE. In the random access process, a host unit in the base station system may periodically Broadcast a Primary Synchronization Signal (PSS), a Secondary Synchronization Signal (SSS), and a Physical Broadcast Signal (PBCH) through a remote unit; the PSS, SSS, and PBCH have the same time period (e.g., 20ms), and may together form a synchronization broadcast block (SSB). The UE may perform primary synchronization signal search, secondary synchronization signal detection, and Physical Broadcast Channel (PBCH) detection by performing cell search, establish downlink synchronization with the base station system based on a PSS and an SSS in an SSB with the best signal quality among the received SSBs, and initiate random access based on one of the plurality of preambles corresponding to the SSB.

However, for idle UEs that have not been randomly accessed to the base station system, the conventional techniques cannot perform effective positioning.

Disclosure of Invention

In view of the foregoing, it is desirable to provide a user equipment positioning method, an apparatus, a host unit, an extension unit, an access network device, and a readable storage medium, which can position an idle user equipment.

In a first aspect, a method for positioning a user equipment, the method comprising:

the access network equipment sends a synchronous broadcast block to idle user equipment according to preset random access configuration information; the random access configuration information includes: a first mapping relationship of the remote unit to the synchronized broadcast block, and a second mapping relationship of the synchronized broadcast block to the preamble resource; the access network device comprises a plurality of remote units;

the access network equipment receives preamble data sent by the user equipment;

and the access network equipment positions the user equipment according to the random access configuration information and the preamble data.

In one embodiment, the positioning, by the access network device, the user equipment according to the random access configuration information and the preamble data includes:

the access network equipment analyzes the lead code data sent by the user equipment to obtain lead code resources corresponding to the user equipment;

the access network equipment determines a synchronous broadcast block associated with the lead code resource corresponding to the user equipment according to the second mapping relation and the lead code resource corresponding to the user equipment; determining a remote unit associated with the synchronous broadcast block corresponding to the user equipment according to the first mapping relation and the synchronous broadcast block corresponding to the user equipment;

and the access network equipment takes the remote unit corresponding to the user equipment as the positioning position of the user equipment.

In one embodiment, the sending the synchronized broadcast block to the user equipment in the idle state includes:

the access network equipment broadcasts the synchronous broadcast blocks in the beam direction corresponding to each synchronous broadcast block;

correspondingly, the access network device locates the user equipment according to the random access configuration information and the preamble data, and further includes:

the access network equipment determines the beam direction associated with the synchronous broadcast block corresponding to the user equipment according to the corresponding relation between the preset synchronous broadcast block and the beam direction and the synchronous broadcast block corresponding to the user equipment;

the access network device using the remote unit corresponding to the user equipment as the positioning location of the user equipment includes:

and the access network equipment takes the remote unit and the beam direction corresponding to the user equipment as the positioning position of the user equipment.

In one embodiment, the method further comprises:

the access network equipment determines the number of synchronous broadcast blocks needing to be configured according to preset access network equipment architecture information, broadcast precision and configuration modes; the broadcast accuracy is the number of synchronized broadcast blocks transmitted by each remote unit; the configuration mode is characterized by whether the synchronous broadcast blocks configured by each remote unit are the same;

the access network equipment configures synchronous broadcast blocks corresponding to the broadcast precision to each remote unit according to the number of the synchronous broadcast blocks needing to be configured to obtain the first mapping relation;

and the access network equipment configures at least one preamble resource to each configured synchronous broadcast block according to a preset preamble resource and the number of the synchronous broadcast blocks needing to be configured to obtain the second mapping relationship.

In one embodiment, the access network device includes a plurality of extension units, the access network device architecture information includes the number P of extension units, the broadcast accuracy is M, the configuration mode is a first configuration mode, and if the synchronous broadcast blocks configured by each remote unit connected to the same extension unit in the first configuration mode are the same, the number of synchronous broadcast blocks that need to be configured is greater than or equal to mxp;

correspondingly, the step of configuring, by the access network device, a synchronized broadcast block corresponding to the broadcast accuracy to each remote unit according to the number of synchronized broadcast blocks that need to be configured includes:

and the access network equipment selects the synchronous broadcast blocks with the number corresponding to the number of the synchronous broadcast blocks to be configured from a preset synchronous broadcast block set, and configures the same M synchronous broadcast blocks to each remote unit connected with the same extension unit from the selected synchronous broadcast blocks.

In one embodiment, the access network device architecture information includes the number N of remote units, the broadcast accuracy is M, the configuration mode is a second configuration mode, and if synchronous broadcast blocks configured by different remote units in the second configuration mode are different, the number of synchronous broadcast blocks that need to be configured is greater than or equal to mxn;

the access network equipment selects the synchronous broadcast blocks with the number corresponding to the number of the synchronous broadcast blocks needing to be configured from a preset synchronous broadcast block set, and configures different M synchronous broadcast blocks to different remote units from the selected synchronous broadcast blocks.

In one embodiment, the access network device includes: a host unit, a plurality of expansion units and a plurality of remote units; the host unit is in communication connection with the plurality of expansion units, and each expansion unit in the plurality of expansion units is in communication connection with at least one remote unit; the access network equipment sends a synchronous broadcast block to idle user equipment according to preset random access configuration information, and the method comprises the following steps:

the host unit sends the random access configuration information to each extension unit;

the expansion unit sends the identification of the synchronous broadcast block corresponding to the remote unit to each remote unit according to the random access configuration information;

the remote unit broadcasts the synchronous broadcast block according to the received identification of the synchronous broadcast block;

alternatively, the first and second electrodes may be,

the host unit sends the identification of the synchronous broadcast block corresponding to each remote unit connected with the expansion unit to each expansion unit according to the random access configuration information;

the extension unit sends the identification of the synchronous broadcast block corresponding to the remote unit to each remote unit connected with the extension unit;

and the remote unit broadcasts the synchronous broadcast block according to the received identification of the synchronous broadcast block.

In one embodiment, the remote unit broadcasting the synchronized broadcast block according to the received identification of the synchronized broadcast block includes:

and the remote unit broadcasts the synchronous broadcast block in the beam direction corresponding to the synchronous broadcast block according to the received identification of the synchronous broadcast block.

In one embodiment, the receiving, by the access network device, preamble data sent by the user equipment includes:

the remote unit receives a lead code radio frequency signal sent by the user equipment aiming at the synchronous broadcast block and sends the lead code radio frequency signal to an extension unit connected with the remote unit;

the expansion unit demodulates the received lead code radio frequency signal according to the random access configuration information to obtain lead code bit data and sends the lead code bit data to the host unit;

correspondingly, the positioning, by the access network device, the user equipment according to the random access configuration information and the preamble data includes:

and the host unit locates the user equipment according to the random access configuration information and the lead code bit data.

In one embodiment, before transmitting the preamble bit data to the host unit, the method further comprises:

the extension unit analyzes the lead code bit data to obtain lead code resources corresponding to the lead code bit data;

the extension unit acquires a remote unit which transmits a lead code radio frequency signal associated with the lead code bit data, and takes the remote unit as a transmitting remote unit corresponding to the lead code resource;

the extension unit judges whether the lead code resource is matched with the sending remote unit or not according to the random access configuration information;

and if the data is not matched with the preamble code, the extension unit discards the preamble code bit data.

In one embodiment, the determining, by the extension unit, whether the preamble resource matches the sending remote unit according to the random access configuration information includes:

the extension unit determines a remote unit corresponding to the lead code resource according to the lead code resource and the random access configuration information;

the extension unit determines whether the remote unit corresponding to the preamble resource matches the transmitting remote unit.

the extension unit determines a configured lead code resource corresponding to the sending remote unit according to the sending remote unit and the random access configuration information;

the extension unit determines whether the preamble resource matches a configured preamble resource corresponding to the transmitting remote unit.

In a second aspect, a user equipment positioning apparatus includes:

a sending module, configured to send, by an access network device, a synchronization broadcast block to an idle user equipment according to preset random access configuration information; the random access configuration information includes: a first mapping relationship of the remote unit to the synchronized broadcast block, and a second mapping relationship of the synchronized broadcast block to the preamble resource; the access network device comprises a plurality of remote units;

a receiving module, configured to receive, by the access network device, preamble data sent by the user equipment;

and the positioning module is used for positioning the user equipment by the access network equipment according to the random access configuration information and the preamble data.

In a third aspect, a host unit comprises a memory storing a computer program and a processor implementing part of the steps of the user equipment positioning method according to the first aspect when the computer program is executed.

In a fourth aspect, an extension unit comprises a memory and a processor, the memory stores a computer program, and the processor implements part of the steps of the user equipment positioning method according to the first aspect when executing the computer program.

In a fifth aspect, an access network device comprises a remote unit, a host unit as described in the third aspect and an extension unit as described in the fourth aspect.

In a sixth aspect, a readable storage medium, having a computer program stored thereon, wherein the computer program, when being executed by a processor, is adapted to carry out the steps of the user equipment positioning method according to the first aspect.

According to the user equipment positioning method, the user equipment positioning device, the host unit, the extension unit, the access network equipment and the readable storage medium, the access network equipment broadcasts the corresponding synchronous broadcast block through the corresponding remote unit according to the pre-configured random access configuration information, so that the synchronous broadcast block with the best signal quality received by each idle user equipment is generally sent by the remote unit closest to the user equipment; each user equipment uploads preamble code data to initiate random access on one of preamble code resources corresponding to the synchronous broadcast block with the best signal quality; the access network device may determine, according to the random access configuration information, a remote unit associated with preamble data sent by each user device, where the remote unit is a remote unit closest to the user device, thereby implementing positioning of each idle user device.

Drawings

FIG. 1 is a diagram of an embodiment of an application environment for a method for locating a user equipment;

FIG. 2a is a flowchart illustrating a method for locating a UE according to an embodiment;

FIG. 2b is a diagram illustrating preamble data in one embodiment;

FIG. 3 is a flow diagram illustrating positioning of a UE in one embodiment;

fig. 4a is a schematic flow chart illustrating configuring random access configuration information according to an embodiment;

fig. 4b is a diagram illustrating configuration of random access configuration information in one embodiment;

fig. 4c is a diagram illustrating configuring random access configuration information according to an embodiment;

fig. 4d is a diagram illustrating configuration of random access configuration information in one embodiment;

FIG. 5a is a diagram illustrating the functional partitioning of a host unit, an expansion unit, and a remote unit in one embodiment;

FIG. 5b is a diagram illustrating functional subsystems of a host unit, an expansion unit, and a remote unit, in accordance with an embodiment;

FIG. 6 is a flow diagram illustrating a process for receiving preamble data in one embodiment;

fig. 7 is a schematic flowchart of a preamble bit data discrimination process in an embodiment;

fig. 8 is a block diagram of a positioning apparatus of a ue in an embodiment.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

The user equipment positioning method provided by the present application may be applied to an access network device as shown in fig. 1, where the access network device may include: a plurality of network elements such as a host unit (AU), a plurality of extension units (CP), and a plurality of remote units (DP) can implement connection between the network elements based on the topology shown in fig. 1: the host unit is communicatively coupled to a plurality of expansion units, each of which is communicatively coupled to at least one remote unit. The plurality of extension units may be in a parallel relationship, such as extension unit 1 and extension unit 2, or in a cascade relationship, such as extension unit 1 and extension unit 3; each remote unit connected to the same expansion unit may be a remote unit Group (DP Group), such as DP Group1 connected to expansion unit 1, including remote unit 11K to remote unit 1K. The host unit mainly completes the modulation and demodulation of baseband signals, the expansion unit mainly completes the forwarding and convergence of uplink/downlink signals, and the remote unit mainly completes the radio frequency receiving/radio frequency sending of the uplink/downlink signals; generally, the host unit is in communication connection with the core network, and the remote unit is in communication connection with the user equipment, so that the access network device can implement communication between the host unit and the user equipment, communication between the core network and the user equipment, communication between the user equipment and the user equipment, and the like.

The user equipment can be but is not limited to a smart phone, a computer device, a portable wearable device, an internet of things device, a vehicle, an unmanned aerial vehicle, an industrial device and other devices with a radio frequency receiving/transmitting function. Of course, the access network device may also have other configurations, for example, consisting of a host unit and a plurality of remote units, the host unit being directly connected to the remote units without extension units. The access network device includes, but is not limited to, a common base station (e.g., eNB), a New Radio base station (NR), a Distributed network element (Distributed Unit), and the like.

In an embodiment, as shown in fig. 2a, a method for positioning a user equipment is provided, which is described by taking the method as an example for being applied to the access network device in fig. 1, and may include the following steps:

s201, an access network device sends a synchronous broadcast block to an idle user device according to preset random access configuration information; the random access configuration information includes: a first mapping relationship of the remote unit to the synchronized broadcast block, and a second mapping relationship of the synchronized broadcast block to the preamble resource; the access network equipment includes a plurality of remote units.

Each remote unit in the access network equipment is distributed, and the access network equipment can broadcast the synchronous broadcast blocks distributed to each remote unit in the random access configuration information through each remote unit, so that the effect of broadcasting different synchronous broadcast blocks in different areas is realized.

Wherein the first mapping relationship may be a first mapping relationship of each remote unit with an identification (or index) of a synchronization broadcast block configured to each remote unit, and a second mapping relationship of the identification of each synchronization broadcast block with a preamble resource configured to each synchronization broadcast block; the preamble resource may include a preamble (preamble code) and a time-frequency resource location of a random access channel to which the preamble corresponds. In addition, the first mapping relationship may further include a total number of the synchronized broadcast blocks that need to be configured; the second mapping relationship may further include the number of preambles corresponding to each SSB.

In the first mapping relationship, each remote unit may correspond to one or more synchronized broadcast blocks. Synchronizing the content of the broadcast block may include: primary Synchronization Signals (PSS), Secondary Synchronization Signals (SSS), and physical broadcast signals (PBCH). In the second mapping relationship, each synchronization broadcast block may correspond to one or more preamble resources. The random access configuration information may be pre-configured and may not change for a long time; and can be adjusted according to actual requirements.

S202, the access network equipment receives the preamble data sent by the user equipment.

The user equipment first transmits preamble data in the random access procedure, as shown in fig. 2b, which may include a Cyclic Prefix (CP), an access preamble sequence, and a guard interval (GT); the access network device may receive preamble data transmitted by the user device for a plurality of synchronized broadcast blocks of the broadcast. It should be noted that, the mapping relationship between the synchronization broadcast block and the preamble data set may be pre-stored in the user equipment, and a certain preamble data may be randomly selected from the corresponding preamble data set for uplink transmission for the received synchronization broadcast block. The preamble data mainly has the functions of informing the access network equipment that a random access request of the user equipment exists, and enabling the access network equipment to estimate the transmission delay between the access network equipment and the user equipment so as to inform the user equipment of the calibration information, thereby performing uplink synchronization; in this embodiment, the preamble data also serves to characterize the synchronized broadcast block transmitted by the remote unit closest to the user equipment, so as to locate the remote unit closest to the user equipment and implement the function of locating the user equipment.

It can be understood that the user equipment may perform cell search in the appointed frequency band, the last communication frequency band, or other preset frequency bands, and when the user equipment receives a plurality of SSBs issued by the access network equipment, the SSB with the best signal quality can be selected, and the downlink synchronization with the access network equipment is established according to the PSS signals and SSS signals in the SSB, i.e., the user equipment and the access network equipment, achieve frame synchronization, so that the PBCH signal can be resolved from the SSB, and obtains the second mapping relation between the synchronization broadcast block and the preamble resource according to the PBCH signal, thereby determining at least one preamble resource corresponding to the SSB with the best signal quality according to the second mapping relationship, and selecting one preamble resource from the at least one preamble resource, and sending the lead code in the selected lead code resource on the time frequency resource position of the random access channel in the selected lead code resource.

Illustratively, the PBCH signal carries a MIB message (Master Information Block, main system module), the ue may obtain a time-frequency resource position of a PDCCH (Physical Downlink Control Channel) by analyzing the MIB, further obtain a time-frequency resource position of a PDSCH (Physical Downlink Shared Channel) in the PDCCH, further obtain a time-frequency resource position of the PDSCH in the PDCCH signal, further obtain a SIB1 Information in the PDSCH signal, and the SIB1 Information may include a second mapping relationship between a synchronization broadcast Block and a preamble resource. Illustratively, the PBCH signal may also directly carry the second mapping relationship between the synchronization broadcast block and the preamble resource.

S203, the access network device positions the user device according to the random access configuration information and the preamble data.

Illustratively, the access network device may determine, according to the random access configuration information and the preamble data sent by the user equipment, a remote unit corresponding to the preamble data sent by the user equipment, and thus may use the remote unit as a location position of the user equipment. It will be appreciated that the SSBs broadcast by different remote units may be the same and therefore there may be situations where the user equipment is located to multiple remote units.

In this embodiment, the access network device broadcasts the corresponding synchronized broadcast block through the corresponding remote unit according to the preconfigured random access configuration information, and therefore the synchronized broadcast block with the best signal quality received by each idle user equipment is generally sent by the remote unit closest to the user equipment; each user equipment uploads preamble code data to initiate random access on one of preamble code resources corresponding to the synchronous broadcast block with the best signal quality; the access network device may determine, according to the random access configuration information, a remote unit associated with preamble data sent by each user device, where the remote unit is a remote unit closest to the user device, thereby implementing positioning of each idle user device.

Referring to fig. 3, in one embodiment, a specific process related to locating a user equipment may include:

s301, the access network equipment analyzes the preamble data sent by the user equipment to obtain the preamble resource corresponding to the user equipment.

Exemplarily, after receiving the preamble data sent by the user equipment, the access network equipment may analyze the preamble data to obtain a preamble resource corresponding to the user equipment; the parsed preamble resource may include: a preamble in the preamble data, and/or a time-frequency resource location of a random access channel carrying the preamble data.

S302, the access network equipment determines a synchronous broadcast block associated with the lead code resource corresponding to the user equipment according to the second mapping relation and the lead code resource corresponding to the user equipment; and determining the remote unit associated with the synchronous broadcast block corresponding to the user equipment according to the first mapping relation and the synchronous broadcast block corresponding to the user equipment.

TABLE 1

Illustratively, as shown in table 1, a mapping relationship of the remote unit to the sync broadcast block and a mapping relationship of the sync broadcast block to the preamble are shown.

When the preamble corresponding to the user equipment a is p35, the synchronization broadcast block corresponding to the user equipment a is SSB3, and the remote unit associated with the synchronization broadcast block SSB3 is DP 1.

And S303, the access network equipment takes the remote unit corresponding to the user equipment as the positioning position of the user equipment.

Illustratively, with reference to the above example, the access network device may use the remote unit DP1 as the location of the user device.

In a possible embodiment, the access network device broadcasts the synchronization broadcast block in the beam direction corresponding to each synchronization broadcast block; the specific process of positioning the ue may further include: the access network equipment determines the beam direction associated with the synchronous broadcast block corresponding to the user equipment according to the corresponding relation between the preset synchronous broadcast block and the beam direction and the synchronous broadcast block corresponding to the user equipment; accordingly, S303 may include: the access network device takes the remote unit and the beam direction corresponding to the user equipment as the positioning position of the user equipment. For example, if the beam direction of the sync broadcast block SSB3 is constant and the remote unit DP1 broadcasts in the beam direction of the sync broadcast block SSB3, then if the preamble data sent by the user equipment a corresponds to SSB3, it means that the user equipment is most likely located near the remote unit DP1 of the broadcast SSB3 and the direction relative to DP1 is the same as the beam direction of the sync broadcast block SSB 3. Compared with the remote unit which can only be positioned near the user equipment, the method can also be positioned to the direction of the user equipment relative to the remote unit, so that the positioning precision is higher, and the subsequent high-quality signal transmission of fixed-point orientation is convenient.

Referring to fig. 4a, in an embodiment, a specific procedure related to configuring the random access configuration information may include:

s401, the access network equipment determines the number of synchronous broadcast blocks needing to be configured according to preset access network equipment architecture information, broadcast precision and configuration mode; the broadcast accuracy is the number of synchronized broadcast blocks transmitted by each remote unit; the configuration mode is characterized by whether the synchronized broadcast blocks configured by each remote unit are the same.

S402, the access network device configures the synchronous broadcast blocks corresponding to the broadcast precision to each remote unit according to the number of the synchronous broadcast blocks required to be configured, and obtains a first mapping relation.

And S403, the access network equipment configures at least one preamble resource to each configured synchronous broadcast block according to the preset preamble resource and the number of the synchronous broadcast blocks required to be configured, so as to obtain a second mapping relationship.

In a possible implementation, the access network device may include a plurality of extension units, the access network device architecture information includes the number P of extension units, the broadcast precision is M, the configuration mode is a first configuration mode, and if the synchronous broadcast blocks configured by each remote unit connected to the same extension unit in the first configuration mode are the same, the number of the synchronous broadcast blocks that need to be configured is greater than or equal to mxp;

correspondingly, the method for configuring the synchronous broadcast block corresponding to the broadcast precision to each remote unit by the access network equipment according to the number of the synchronous broadcast blocks required to be configured includes:

the access network equipment selects the synchronous broadcast blocks with the number corresponding to the number of the synchronous broadcast blocks needing to be configured from a preset synchronous broadcast block set, and configures the same M synchronous broadcast blocks to each remote unit connected with the same extension unit from the selected synchronous broadcast blocks.

It will be appreciated that, because the synchronized broadcast blocks corresponding to different extension units are different, but the synchronized broadcast blocks configured for each remote unit under the same extension unit are the same, for a user terminal located in the coverage area of multiple remote units under a certain extension unit, there may be multiple remote units located and belonging to the extension unit, that is, the location accuracy is that the user equipment is located near the multiple remote units under the extension unit. When the positioning direction is considered, when M is 1, the direction is difficult to determine because no reference object exists, and the positioning precision is basically unchanged; when M > is 2, the positioning precision is a certain direction in M directions of a plurality of remote units under the expansion unit.

Referring to fig. 4b, if the broadcast accuracy is 4 and the configuration mode is the first configuration mode, the expected positioning accuracy is a certain direction of four directions of the remote units under the CP; the number of SSBs that need to be configured must be greater than or equal to 4 times the number of CPs, and the closest one can be selected according to the optional values provided by the 3GPP protocol specifications. After determining the number of SSBs, for example, the number of preambles is 64, and 64 random access preamble sequences (preambles) can be equally divided into each SSB.

For example, SSBs of the three remote unit configurations under extension unit a are SSBs 0, SSBs 2, SSBs 4 and SSBs 6, and SSBs of the three remote unit configurations under extension unit b are SSBs 1, SSBs 3, SSBs 5 and SSBs 7; illustratively, when preamble data transmitted by the user equipment corresponds to the SSB2, it may be determined that the user equipment is located in the beam direction of the SSBs 2 of three remote units under extension unit a.

In a possible implementation, the access network device architecture information includes the number N of remote units, the broadcast precision is M, the configuration mode is a second configuration mode, and if the synchronous broadcast blocks configured by different remote units in the second configuration mode are different, the number of the synchronous broadcast blocks that need to be configured is greater than or equal to mxn;

It will be appreciated that the synchronized broadcast blocks configured for different remote units are different and therefore for a user terminal located near a remote unit, the positioning accuracy is such that the user equipment is located near the remote unit. When the positioning direction is considered, when M is 1, the direction is difficult to determine because no reference object exists, and the positioning precision is basically unchanged; when M > < 2, the positioning accuracy is determined for one of M directions of the remote unit.

Referring to fig. 4c, the broadcast accuracy is 1, and the configuration mode is the second configuration mode, i.e. the ue is expected to be located at a certain DP; the number of SSBs that need to be configured must be equal to or greater than the number of DPs, and the closest one can be selected according to optional values provided by the 3GPP protocol specification. After determining the number of SSBs, 64 random access preamble sequences are also divided equally into each SSB accordingly.

For example, SSBs allocated to three remote units 1 to 3 under extension unit a are SSB0, SSB1 and SSB2, respectively, and SSBs allocated to three remote units 7 to 9 under extension unit b are SSB3, SSB4 and SSB5, respectively; illustratively, when the preamble data transmitted by the user equipment corresponds to SSB2, it may be determined that the user equipment is located at remote unit 3.

Referring to fig. 4d, the broadcast accuracy is 4, and the configuration mode is the second configuration mode, that is, the expected positioning accuracy is that the ue is located in a certain direction of four directions under a certain DP; the number of SSBs to be configured must be greater than or equal to 4 times the number of DPs, and the closest one can be selected according to optional values provided by the 3GPP protocol specification. After the number of SSBs is determined, 64 random access preamble sequences are also respectively equally divided into each SSB.

For example, as shown in the configuration diagram of fig. 4d, when the preamble data transmitted by the user equipment corresponds to the SSB2, it can be determined that the user equipment is located in the beam direction of the SSB2 of the remote unit 3.

In this application, the configuration mode for configuring the SSB for each remote unit and the mode for configuring the preamble resource for each SSB may be multiple configuration modes such as uniform configuration, random configuration, and the like, and are not limited to the above-described mode, and it is only required to ensure that each remote unit is configured with at least one synchronous broadcast block, and each synchronous broadcast block is configured with at least one preamble resource.

Alternatively, the access network device may configure a number of the synchronized broadcast blocks corresponding to the weight of each remote unit to each remote unit according to the number of the synchronized broadcast blocks that need to be configured and the weight of each remote unit. It will be appreciated that the greater the weight of a remote unit, the greater the number of synchronized broadcast blocks configured to that remote unit. Illustratively, consider that there may be instances where the distribution density of user devices is not uniform, e.g., there are many user devices located near remote units in a park, and fewer user devices located near remote units in the park; the distribution density of the user equipment in the vicinity of each remote unit may be used as the weight of each remote unit, wherein the distribution density of the user equipment may be preset; therefore, the optimized configuration of the SSB resources can be realized, and the positioning precision is improved.

Referring to fig. 1, the access network apparatus includes: a host unit, a plurality of expansion units and a plurality of remote units; the host unit is in communication connection with the plurality of expansion units, and each expansion unit in the plurality of expansion units is in communication connection with at least one remote unit; accordingly, the process of broadcasting the synchronized broadcast block in S201 may be subdivided into:

the host unit sends random access configuration information to each expansion unit;

alternatively, the first and second electrodes may be,

the remote unit broadcasts the synchronized broadcast block based on the received identification of the synchronized broadcast block.

The remote unit broadcasting the synchronized broadcast block according to the received identifier of the synchronized broadcast block may include: and the remote unit broadcasts the synchronous broadcast block in the beam direction corresponding to the synchronous broadcast block according to the received identification of the synchronous broadcast block. The remote unit may store in advance a correspondence between the identifier of the synchronization broadcast block and the beam direction of the synchronization broadcast block. The above embodiments may be applied to an access network device under any option (scenario) based functional division.

Referring to fig. 5a, a schematic diagram of functional division of a host unit, an extension unit, and a remote unit according to an embodiment of the present invention is provided, where the host unit and the extension unit may perform functional division based on option6, and the extension unit and the remote unit may perform functional division based on option 8. The host Unit is composed of a CU (Central Unit) and a DU (Distributed Unit), the CU is responsible for implementing PDCP, SDAP and RRC layer protocol functions, and the DU is responsible for implementing RLC and MAC protocol functions. The CU and the DU can be deployed jointly or separately; the expansion unit is responsible for realizing all protocol functions of the PHY; the remote units are responsible for implementing the RF functions. Correspondingly, the AU and the CP transmit through an Enhanced Common Radio Interface (eCPRI) protocol, and the CP and the DP transmit through a Common Radio Interface (CPRI) protocol.

Referring to fig. 5b, the host unit (AU) may include a UE location management subsystem, an eccri interface subsystem, an oam (operation Administration and maintenance) subsystem, and a ran (radio Access network) protocol stack subsystem defined by 3 GPP. The UE position management subsystem can realize the positioning function of the UE and position the UE based on the data processing of the CP side PHY (physical layer) subsystem; the eCPRI interface subsystem realizes the analysis and encapsulation of the eCPRI protocol packet and performs data transmission based on the eCPRI packet with the extension unit; the OAM subsystem realizes the functions of software management, configuration management, fault management and performance management, and comprises configuring random access configuration information according to the positioning precision required by the UE position management subsystem and the distribution of CP and DP; the RAN protocol stack subsystem comprises: a MAC (Media Access Control ) Layer subsystem, an RLC (Radio Link Control ) Layer subsystem, a PDCP (Packet Data Convergence Protocol) subsystem, an SDAP (Service Data Adaptation Protocol) subsystem, an L3(Layer 3) subsystem, and an S1/NG interface subsystem; the MAC layer subsystem and the RLC subsystem realize data processing strictly related to the transmission time interval TTI time sequence of the RAN system; the PDCP layer subsystem realizes the functions of data integrity protection, air interface encryption and IP message header compression; the L3 subsystem realizes RRC (Radio Resource Control) protocol signaling processing and LTE system wireless Resource management; the SDAP subsystem realizes the mapping from different IP flows to wireless load; the S1/NG interface subsystem realizes the core network S1-MME/NG-AMF control signaling processing and GTP-U (IP-based higher layer protocol) tunnel data processing. The detailed definitions can be found in the 3GPP protocol.

Referring to fig. 5b, the extension unit (CP) includes a DP Group management subsystem, an eccri interface subsystem, a PHY subsystem, a CPRI interface subsystem, and an OAM subsystem; wherein the PHY subsystem implements all physical layer functions; the DP Group management subsystem realizes DP Group management of uplink and downlink data based on scheduling information of an AU side; the eCPRI interface subsystem realizes data packet transmission based on eCPRI with the AU; the CPRI interface subsystem implements CPRI-based IQ (quadrature signal) data stream transmission with the DP.

Referring to fig. 5b, the remote unit (DP) includes a CPRI interface subsystem, an RF (radio frequency) subsystem and an OAM subsystem, wherein the RF subsystem provides radio frequency signal processing (e.g., analog-to-digital conversion) and performs signal transceiving through an antenna; the CPRI interface subsystem realizes the transmission of IQ data flow based on CPRI with CP.

In contrast to the conventional functional division, in the present embodiment, the extension unit can perform processing of the entire physical layer. Accordingly, referring to fig. 6, the process of receiving preamble data involved in S202 may include:

s601, the remote unit receives a lead code radio frequency signal sent by the user equipment aiming at the synchronous broadcast block and sends the lead code radio frequency signal to an expansion unit connected with the remote unit;

s602, the expansion unit demodulates the received lead code radio frequency signal according to the random access configuration information to obtain lead code bit data, and sends the lead code bit data to the host unit.

Correspondingly, the access network equipment locates the user equipment according to the random access configuration information and the preamble data, and the method comprises the following steps: and the host unit positions the user equipment according to the random access configuration information and the lead code bit data.

That is, the extension unit may demodulate the preamble radio frequency signal sent by the remote unit based on the processing of all physical layers to obtain preamble bit data, and send the preamble bit data to the host unit; compared with the original technical scheme that the extension unit directly forwards the lead code radio frequency signal to the host unit, the data volume of the lead code bit data is far smaller than that of the lead code radio frequency signal, so that the transmission data volume between the host unit and the extension unit is reduced, and the requirement on the forward transmission bandwidth between the host unit and the extension unit is reduced; meanwhile, the host unit is not required to perform demodulation processing, the requirement on the baseband processing capacity of the processor of the host unit is lowered, and the cost can be lowered.

Similarly, referring to fig. 7, based on the demodulation processing capability of the extension unit, the extension unit may further perform a discrimination process on the preamble bit data before sending the preamble bit data to the host unit, and the discrimination process may include:

s701, the expansion unit analyzes the lead code bit data to obtain lead code resources corresponding to the lead code bit data.

S702, the expansion unit acquires a remote unit which sends a lead code radio frequency signal related to lead code bit data, and takes the remote unit as a sending remote unit corresponding to lead code resources.

S703, the expansion unit judges whether the lead code resource is matched with the sending remote unit according to the random access configuration information.

In a possible implementation manner, the extension unit may determine, according to the preamble resource and the random access configuration information, a remote unit corresponding to the preamble resource; the extension unit may determine whether the remote unit corresponding to the preamble resource matches the transmitting remote unit.

In a possible implementation, the extension unit may determine, according to the sending remote unit and the random access configuration information, a configuration preamble resource corresponding to the sending remote unit; the extension unit may determine whether the preamble resource matches a configured preamble resource corresponding to the transmitting remote unit.

S704, if there is no match, the extension unit discards the preamble bit data.

Accordingly, if there is a match, the extension unit retains the preamble bit data. For example, referring to table 1, if a preamble corresponding to a certain preamble bit data is p10 and a transmitting remote unit corresponding to the preamble bit data is DP1, because the remote unit DP0 corresponding to p10 does not correspond to the transmitting remote unit DP1, or because there is no p10 in the configured preamble resource { p32, p33,. once.,. p42}, { p43, p44,. once.,. p53}, { p53, p54,. once.,. p63} corresponding to the transmitting remote unit DP1, it means that the preamble bit data is not reasonable, and the spreading unit may discard the preamble bit data.

In a word, the extension unit of this embodiment can discard unreasonable preamble bit data through the discrimination processing, and send reasonable preamble bit data to the host unit, thereby further reducing the forwarding bandwidth.

It should be understood that although the various steps in the flow charts of fig. 2a,3,4a,6,7 are shown in sequence as indicated by the arrows, the steps are not necessarily performed in sequence as indicated by the arrows. The steps are not performed in the exact order shown and described, and may be performed in other orders, unless explicitly stated otherwise. Moreover, at least some of the steps in fig. 2a,3,4a,6, and 7 may include multiple sub-steps or multiple stages, which are not necessarily performed at the same time, but may be performed at different times, and the order of performing the sub-steps or stages is not necessarily sequential, but may be performed alternately or alternatingly with other steps or at least some of the sub-steps or stages of other steps.

Furthermore, this embodiment provides a host unit, where the host unit includes a memory and a processor, the memory stores a computer program, and the processor implements all or part of the steps of the above-mentioned user equipment positioning method when executing the computer program, for example, some of the following steps may be implemented:

sending random access configuration information to each expansion unit;

according to the random access configuration information, sending the identification of the synchronous broadcast block corresponding to each remote unit connected with the expansion unit to each expansion unit;

and positioning the user equipment according to the random access configuration information and the lead code bit data.

This embodiment provides an extension unit, where the extension unit includes a memory and a processor, where the memory stores a computer program, and the processor implements part of the steps of the above-mentioned ue positioning method when executing the computer program, for example, it may implement part of the following steps:

according to the random access configuration information, sending the identification of the synchronous broadcast block corresponding to the remote unit to each remote unit;

transmitting to each remote unit connected to the expansion unit an identification of a synchronized broadcast block corresponding to the remote unit;

demodulating the received lead code radio frequency signal according to the random access configuration information to obtain lead code bit data, and sending the lead code bit data to the host unit;

analyzing the lead code bit data to obtain lead code resources corresponding to the lead code bit data;

acquiring a remote unit for sending a lead code radio frequency signal associated with lead code bit data, and taking the remote unit as a sending remote unit corresponding to a lead code resource;

judging whether the lead code resource is matched with the sending remote unit or not according to the random access configuration information;

if not, the preamble bit data is discarded.

In addition, the embodiment further provides an access network device, which includes the host unit, the extension unit, and the remote unit. For the above description of the steps and the connection relationship among the host unit, the extension unit and the remote unit, reference may be made to the above description, which is not repeated herein.

In one embodiment, as shown in fig. 8, there is provided a user equipment positioning apparatus, including: a sending module 81, a receiving module 82 and a positioning module 83, wherein:

a sending module 81, configured to send a synchronous broadcast block to an idle ue by an access network device according to preset random access configuration information; the random access configuration information includes: a first mapping relationship of the remote unit to the synchronized broadcast block, and a second mapping relationship of the synchronized broadcast block to the preamble resource; the access network equipment comprises a plurality of remote units;

a receiving module 82, configured to receive, by the access network device, preamble data sent by the user equipment;

and a positioning module 83, configured to the access network device, position the user equipment according to the random access configuration information and the preamble data.

Optionally, the positioning module 83 may be specifically configured to analyze preamble data sent by the user equipment to obtain a preamble resource corresponding to the user equipment; determining a synchronous broadcast block associated with the lead code resource corresponding to the user equipment according to the second mapping relation and the lead code resource corresponding to the user equipment; determining a remote unit associated with the synchronous broadcast block corresponding to the user equipment according to the first mapping relation and the synchronous broadcast block corresponding to the user equipment; and taking the remote unit corresponding to the user equipment as the positioning position of the user equipment.

Optionally, the sending module 81 is specifically configured to broadcast the synchronization broadcast block in the beam direction corresponding to each synchronization broadcast block; correspondingly, the positioning module 83 is further configured to determine, according to the preset corresponding relationship between the synchronized broadcast block and the beam direction and the synchronized broadcast block corresponding to the user equipment, a beam direction associated with the synchronized broadcast block corresponding to the user equipment; the method for using the remote unit corresponding to the user equipment as the positioning position of the user equipment comprises the following steps: and taking the remote unit and the beam direction corresponding to the user equipment as the positioning position of the user equipment.

Optionally, the apparatus may further include: the configuration module is used for determining the number of the synchronous broadcast blocks needing to be configured according to the preset access network equipment architecture information, the broadcast precision and the configuration mode; the broadcast accuracy is the number of synchronized broadcast blocks transmitted by each remote unit; the configuration mode is characterized in that whether the synchronous broadcast blocks configured by each remote unit are the same or not; configuring synchronous broadcast blocks corresponding to broadcast precision to each remote unit according to the number of the synchronous broadcast blocks required to be configured to obtain a first mapping relation; and configuring at least one preamble resource for each configured synchronous broadcast block according to the preset preamble resource and the number of the synchronous broadcast blocks needing to be configured to obtain a second mapping relation.

Optionally, the access network device includes multiple extension units, the access network device architecture information includes the number P of extension units, the broadcast precision is M, the configuration mode is a first configuration mode, and if the synchronous broadcast blocks configured by each remote unit connected to the same extension unit in the first configuration mode are the same, the number of the synchronous broadcast blocks to be configured is greater than or equal to mxp; correspondingly, the configuration module is specifically configured to select, from a preset set of synchronized broadcast blocks, synchronized broadcast blocks of a number corresponding to the number of synchronized broadcast blocks to be configured, and configure, from the selected synchronized broadcast blocks, the same M synchronized broadcast blocks to each remote unit connected to the same extension unit.

Optionally, the access network device architecture information includes the number N of remote units, the broadcast precision is M, the configuration mode is a second configuration mode, and if the synchronous broadcast blocks configured by different remote units in the second configuration mode are different, the number of the synchronous broadcast blocks to be configured is greater than or equal to mxn; correspondingly, the configuration module is specifically configured to select, by the access network device, the number of synchronous broadcast blocks corresponding to the number of synchronous broadcast blocks to be configured from the preset synchronous broadcast block set, and configure, from the selected synchronous broadcast blocks, different M synchronous broadcast blocks to different remote units.

Optionally, the access network device includes: a host unit, a plurality of expansion units and a plurality of remote units; the host unit is in communication connection with the plurality of expansion units, and each expansion unit in the plurality of expansion units is in communication connection with at least one remote unit; a first part of the sending module 81 may be integrated in the host unit, a second part may be integrated in the extension unit, and a third part may be integrated in the remote unit, specifically, the first part is used to send random access configuration information to each extension unit; the second part is used for sending the identification of the synchronous broadcast block corresponding to the remote unit to each remote unit according to the random access configuration information; a third part for broadcasting the synchronized broadcast block for identification of the received synchronized broadcast block; or the first part is used for sending the identification of the synchronous broadcast block corresponding to each remote unit connected with the extension unit to each extension unit according to the random access configuration information; a second part for transmitting to each remote unit connected to the expansion unit an identification of a synchronized broadcast block corresponding to the remote unit; the third part is for broadcasting the synchronized broadcast block based on the identification of the received synchronized broadcast block.

Optionally, the third part of the sending module 81 is specifically configured to broadcast the synchronization broadcast block in the beam direction corresponding to the synchronization broadcast block according to the received identification of the synchronization broadcast block.

Alternatively, the first part of the receiving module 82 may be integrated in the remote unit, and the second part may be integrated in the extension unit, specifically, the first part is configured to receive the preamble radio frequency signal transmitted by the user equipment for the synchronized broadcast block, and transmit the preamble radio frequency signal to the extension unit connected to the remote unit; the second part is used for demodulating the received lead code radio frequency signal according to the random access configuration information to obtain lead code bit data and sending the lead code bit data to the host unit; accordingly, the positioning module 83 may be integrated in the host unit for positioning the user equipment according to the random access configuration information and the preamble bit data.

Optionally, the second part of the receiving module 82 is further configured to parse the preamble bit data to obtain a preamble resource corresponding to the preamble bit data; acquiring a remote unit for sending a lead code radio frequency signal associated with lead code bit data, and taking the remote unit as a sending remote unit corresponding to a lead code resource; judging whether the lead code resource is matched with the sending remote unit or not according to the random access configuration information; if not, the extension unit discards the preamble bit data.

Optionally, the second part of the receiving module 82 is further configured to determine, according to the preamble resource and the random access configuration information, a remote unit corresponding to the preamble resource; and judging whether the remote unit corresponding to the lead code resource is matched with the sending remote unit.

Optionally, the second part of the receiving module 82 is further configured to determine, according to the sending remote unit and the random access configuration information, a configuration preamble resource corresponding to the sending remote unit; and judging whether the lead code resource is matched with the configured lead code resource corresponding to the sending remote unit.

For specific definition of the user equipment positioning device, reference may be made to the above definition of the user equipment positioning method, which is not described herein again. The modules in the ue positioning apparatus may be implemented in whole or in part by software, hardware, and a combination thereof. The modules can be embedded in a hardware form or independent of a processor in the corresponding device, and can also be stored in a memory in the corresponding device in a software form, so that the processor can call and execute operations corresponding to the modules.

In one embodiment, a readable storage medium is provided, having stored thereon a computer program which, when executed by a processor, performs the steps of:

sending a synchronous broadcast block to idle user equipment according to preset random access configuration information; the random access configuration information includes: a first mapping relationship of the remote unit to the synchronized broadcast block, and a second mapping relationship of the synchronized broadcast block to the preamble resource; the access network equipment comprises a plurality of remote units;

receiving preamble data sent by user equipment;

and positioning the user equipment according to the random access configuration information and the preamble data.

It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by hardware instructions of a computer program, which can be stored in a non-volatile computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. Any reference to memory, storage, database, or other medium used in the embodiments provided herein may include non-volatile and/or volatile memory, among others. Non-volatile memory can include read-only memory (ROM), Programmable ROM (PROM), Electrically Programmable ROM (EPROM), Electrically Erasable Programmable ROM (EEPROM), or flash memory. Volatile memory can include Random Access Memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in a variety of forms such as Static RAM (SRAM), Dynamic RAM (DRAM), Synchronous DRAM (SDRAM), Double Data Rate SDRAM (DDRSDRAM), Enhanced SDRAM (ESDRAM), Synchronous Link DRAM (SLDRAM), Rambus Direct RAM (RDRAM), direct bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).

The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A method for locating a user equipment, the method comprising:

the access network equipment receives preamble data sent by the user equipment;

the access network equipment positions the user equipment according to the random access configuration information and the preamble data;

wherein, the access network device locates the user equipment according to the random access configuration information and the preamble data, and comprises:

2. The method of claim 1, wherein the sending the synchronized broadcast block to the user equipment in an idle state comprises:

3. The method of claim 1, further comprising:

4. The method according to claim 3, wherein the access network device includes a plurality of extension units, the access network device architecture information includes a number P of extension units, the broadcast precision is M, the configuration mode is a first configuration mode, and if the synchronous broadcast blocks configured by each remote unit connected to the same extension unit in the first configuration mode are the same, the number of synchronous broadcast blocks that need to be configured is greater than or equal to mxp;

5. The method of claim 3, wherein the access network device architecture information includes a number N of remote units, the broadcast accuracy is M, the configuration mode is a second configuration mode, and if synchronous broadcast blocks configured by different remote units in the second configuration mode are different, the number of synchronous broadcast blocks that need to be configured is greater than or equal to M × N;

6. The method of claim 1, wherein the access network device comprises: a host unit, a plurality of expansion units and a plurality of remote units; the host unit is in communication connection with the plurality of expansion units, and each expansion unit in the plurality of expansion units is in communication connection with at least one remote unit; the access network equipment sends a synchronous broadcast block to idle user equipment according to preset random access configuration information, and the method comprises the following steps:

alternatively, the first and second electrodes may be,

7. The method of claim 6, wherein broadcasting the synchronized broadcast block by the remote unit based on the identification of the received synchronized broadcast block comprises:

8. The method of claim 6, wherein the receiving, by the access network device, the preamble data transmitted by the user equipment comprises:

9. The method of claim 8, wherein prior to transmitting the preamble bit data to the host unit, the method further comprises:

10. The method of claim 9, wherein the extension unit determining whether the preamble resource matches the transmitting remote unit based on the random access configuration information comprises:

11. The method of claim 9, wherein the extension unit determining whether the preamble resource matches the transmitting remote unit based on the random access configuration information comprises:

12. A user equipment positioning apparatus, comprising:

the positioning module is used for analyzing the lead code data sent by the user equipment to obtain lead code resources corresponding to the user equipment; determining a synchronous broadcast block associated with the lead code resource corresponding to the user equipment according to the second mapping relation and the lead code resource corresponding to the user equipment; determining a remote unit associated with the synchronous broadcast block corresponding to the user equipment according to the first mapping relation and the synchronous broadcast block corresponding to the user equipment; and taking the remote unit corresponding to the user equipment as the positioning position of the user equipment.

13. A host unit, characterized in that the host unit comprises a memory and a processor, the memory storing a computer program, the processor realizing the steps of the method as performed by the host unit in claim 6 or claim 8 when executing the computer program.

14. An expansion unit, characterized in that the expansion unit comprises a memory, in which a computer program is stored, and a processor, which when executing the computer program performs the steps of the method as performed by the expansion unit in claim 6 or any one of claims 8-11.

15. An access network arrangement comprising a remote unit, a host unit according to claim 13 and an extension unit according to claim 14.

16. A readable storage medium, having stored thereon a computer program, wherein the computer program, when being executed by a processor, is adapted to carry out the steps of the method of any one of claims 1 to 11.