CN115633379A

CN115633379A - Slice management method based on position information of pico-base station terminal, pico-base station, core network equipment and terminal

Info

Publication number: CN115633379A
Application number: CN202211265102.7A
Authority: CN
Inventors: 陈杨; 韩飞; 高庭华; 张磊; 王卫
Original assignee: Sichuan Communication Scientific Research Planning And Design Co ltd
Current assignee: Sichuan Communication Scientific Research Planning And Design Co ltd
Priority date: 2022-10-17
Filing date: 2022-10-17
Publication date: 2023-01-20

Abstract

The invention discloses a slice management method based on position information of a pico-base station terminal, a pico-base station, core network equipment and a terminal, belonging to the technical field of communication.A pico-base station detects the position information of the current terminal, associates the number of a remote unit pRRU with the highest signal-to-noise ratio with a corresponding SRS resource to form a report message, and reports the report message to a baseband unit BBU; a baseband unit (BBU) inquires a pRRU number associated with a terminal according to SRS resources sent by an extension unit (HUB), and sends terminal position information to a core network; and the core network equipment transmits a slice configuration updating command to the terminal, and sends the signed slice configuration strategy S-NSSAI to the terminal, and indicates that the terminal can use the resource marked by the slice configuration strategy S-NSSAI signed in a specific area. The invention combines the characteristic of the pico-base station architecture, distinguishes different slicing strategies by identifying the position where the terminal resides, and better provides the required switching management service for the user.

Description

Slice management method based on position information of pico-base station terminal, pico-base station, core network equipment and terminal

Technical Field

The invention relates to the technical field of communication, in particular to a slice management method based on position information of a pico-base station terminal, a pico-base station, core network equipment and a terminal.

Background

The network slices can be processed differentially according to the request of each terminal. By slicing, the mobile network operator may treat the terminals as different subscriber types, each terminal having a different service request, and manage the slice types and services each terminal is entitled to use according to the service level agreement.

In practical application, there is a need to distinguish slice management by a terminal, and the need to distinguish slice management by combining specific location area and scene service characteristics. The current network handover management method generally only uses the base station as the minimum unit, but uses the base station as the whole slice configuration, and cannot meet the requirements of refined handover management and service divided by regions.

For a pico-base station with widely applied indoor coverage, one base station often covers multiple floors or multiple areas in an extended or remote manner, for example, shopping, catering, educational training, medical services, cinema, etc. are included in a commercial complex, services provided in different areas may need to meet different business needs, and the existing slice management method does not provide differentiated switching service needs for different floors or areas.

Disclosure of Invention

The invention aims to solve the problem that the slice configuration taking a base station as a whole in the prior art cannot meet the requirements of fine switching management and service divided according to regions, and provides a slice management method based on position information of a pico-base station terminal, the pico-base station, core network equipment and the terminal.

The purpose of the invention is realized by the following technical scheme:

in a first aspect, a method for slice management based on pico-base station terminal location information is provided, where the method includes:

the pico-base station receives a Sounding Reference Signal (SRS) sent by a terminal through a remote unit (pRRU), issues configuration information of the SRS to an extension unit (HUB) through a Base Band Unit (BBU), and indicates SRS resources which need to be detected by the current HUB;

the HUB detects the signal-to-noise ratio of Sounding Reference Signals (SRS) on the remote units (pRRUs) according to the SRS resources needing to be detected, associates the number of the remote unit (pRRU) with the highest signal-to-noise ratio with the corresponding SRS resource to form a report message, and reports the report message to a baseband unit (BBU);

the base band unit BBU inquires a pRRU number associated with the terminal according to the SRS resource sent by the extension unit HUB, and sends the terminal position information to a core network;

and the baseband unit BBU receives a slice configuration update command issued by the core network for the terminal, and sends a signed slice configuration strategy S-NSSAI to the terminal, and indicates that the terminal can use the resource marked by the slice configuration strategy S-NSSAI signed in a specific area.

In an example, a slice management method based on pico-base station terminal location information, where the extension unit HUB detects, according to the SRS resource to be detected, a signal-to-noise ratio of a sounding reference signal SRS on each remote unit pRRU, includes:

receiving time domain data of a Sounding Reference Signal (SRS), transforming the time domain data to a frequency domain by using fast Fourier transform, and performing resource demapping to obtain SRS data of the received frequency domain;

locally generating SRS frequency domain data;

carrying out conjugate multiplication on the SRS data of the received frequency domain and the locally generated SRS frequency domain data to obtain a channel coefficient H _ LS;

transforming the channel coefficient H _ LS to a time domain by using an inverse fast Fourier transform, and calculating useful signal power and noise power;

and calculating the signal-to-noise ratio of the Sounding Reference Signal (SRS).

In one example, a slice management method based on pico-base station terminal location information includes that a configuration message of a Sounding Reference Signal (SRS) includes a plurality of SRS resource parameters and corresponding resource index numbers.

In one example, the report message includes a resource index number and a corresponding pRRU number.

In a second aspect, a method for slice management based on pico-base station terminal location information is provided, where the method includes:

the core network stores slicing strategies of different remote units pRRU and receives terminal position information from a baseband unit BBU;

the core network judges whether the terminal supports a remote unit pRRU-based slicing strategy according to the terminal position information, wherein the remote unit pRRU-based slicing strategy comprises the following steps:

presetting the mapping relation between different remote units pRRU and a signed slice configuration strategy S-NSSAI; indicating a terminal entering a specific area to use a resource marked by a signed slice configuration strategy S-NSSAI;

and if the terminal supports the operation, issuing a slice configuration updating command to the BBU, and indicating that the terminal can use a signed slice configuration strategy S-NSSAI.

In one example, a slice management method based on position information of a pico-base station terminal, where issuing a slice configuration update command to a baseband unit BBU to indicate that a terminal may use a contracted slice configuration policy S-NSSAI, includes:

the list of available slices is updated and a session establishment procedure for the slices is initiated using the terminal routing policy.

In a third aspect, a method for slice management based on pico-base station terminal location information is provided, where the method includes:

a terminal sends a Sounding Reference Signal (SRS) to a remote unit (pRRU) of a pico-base station;

and the terminal receives the signed slice configuration strategy S-NSSAI sent by the baseband unit BBU and uses the resource marked by the signed slice configuration strategy S-NSSAI in the specific area.

In a fourth aspect, there is provided a pico-base station comprising:

a remote unit pRRU for receiving a sounding reference signal SRS transmitted by a terminal,

the base band unit BBU is used for issuing a configuration message of the sounding reference signal SRS and indicating the SRS resource needing to be detected currently;

the extension unit HUB is used for detecting the signal-to-noise ratio of the sounding reference signal SRS on each remote unit pRRU according to the SRS resource needing to be detected, associating the number of the remote unit pRRU with the highest signal-to-noise ratio with the corresponding SRS resource to form a report message, and reporting the report message to the baseband unit BBU;

the baseband unit BBU is also used for inquiring a pRRU number associated with the terminal according to the SRS resource sent by the extension unit HUB and sending the terminal position information to a core network;

the base band unit BBU is further configured to receive a slice configuration update command issued by the core network for the terminal, and send a signed slice configuration policy S-NSSAI to the terminal, indicating that the terminal can use a resource identified by the slice configuration policy S-NSSAI signed in a specific area.

In a fifth aspect, a core network device is provided, which includes:

a storage unit for storing slicing strategies of different remote units pRRUs;

a receiver, configured to receive terminal location information from a baseband unit BBU, and determine, according to the terminal location information, whether a terminal supports a remote unit pRRU-based slicing policy, where the remote unit pRRU-based slicing policy includes:

and the transmitter is used for issuing a slice configuration updating command to the BBU (baseband unit) and indicating that the terminal can use a signed slice configuration strategy S-NSSAI.

In a sixth aspect, a terminal is provided, which includes:

a transmitter for transmitting a sounding reference signal, SRS, to a remote unit, pRRU, of a pico base station;

and the receiver is used for receiving the signed slice configuration strategy S-NSSAI sent by the baseband unit BBU and using the resource marked by the signed slice configuration strategy S-NSSAI in the specific area.

It should be further noted that the technical features corresponding to the above options can be combined with each other or replaced to form a new technical solution without conflict.

Compared with the prior art, the invention has the beneficial effects that:

the invention designs an SRS detection reporting mechanism based on a HUB to a BBU, judges pRRU position information associated with a terminal position based on SRS signal-to-noise ratio detection and reports the pRRU position information to a core network, and simultaneously, the core network carries out a mechanism of specific slice configuration according to the pRRU position information of the terminal, can distinguish the terminal according to different areas covered by the base station to provide a slice strategy so as to realize specific service requirements, can accurately identify users in a specific coverage area, provides high-quality network slice service for all users in the area, realizes refined slice management and provides higher-quality network service.

Drawings

Fig. 1 is a schematic diagram illustrating a slice management method based on position information of a pico-base station terminal according to an embodiment of the present invention;

fig. 2 is a schematic view illustrating slice management based on a pico-base station architecture according to an embodiment of the present invention;

fig. 3 is a flowchart illustrating an SRS signal-to-noise ratio calculation process for a pRRU according to an embodiment of the present invention.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.

Furthermore, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

The invention mainly sets corresponding slice configuration strategies according to the service requirements of different pRRU coverage areas of the pico-cell, and when the pico-cell detects that a terminal which accords with the corresponding slice strategies enters a specific pRRU coverage area, a core network configures the specific slice for the terminal.

The pico-base station consists of three levels of architectures, namely a Base Band Unit (BBU), an extension unit (HUB) and a remote unit (pRRU), a Network provider can preset specific service scene requirements and differentiated switching configuration strategies according to different pRRU coverage areas of the pico-base station, establish a pRRU and S-NSSAI (Single Network Slice Selection Assistant Information) mapping relation and store the mapping relation at a core Network side, wherein the S-NSSAI refers to a signed slicing configuration strategy.

The specific content of the invention mainly comprises:

designing an SRS detection mechanism based on HUB to BBU of a pico-base station: the BBU sends an SRS configuration message to the HUB and indicates SRS resources which need to be detected by the HUB; the HUB receives all SRS resources according to all pRRUs, and reports the pRRU number with the strongest signal-to-noise ratio and the SRS resource index to the BBU;

designing a message reporting mechanism for reporting pRRU position information associated with a terminal by a pico-cell: and the BBU compares the SRS configuration of the access terminal based on the SRS detection result reported by the HUB to obtain the pRRU position number of the terminal, and includes the pRRU position information (CRI) associated with the terminal in the UE position information reporting message (ULI) and sends the information to the core network.

A mechanism for a core network to carry out specific slice configuration according to a pRRU in which a terminal is designed: the core network extracts pRRU position information (CRI) associated with the terminal from UE position information reporting information (ULI) sent by a base transceiver station (BBU), when the pRRU position of the terminal accords with a signed slice CONFIGURATION strategy (S-NSSAI), the core network issues a CONFIGURATION UPDATE COMMAND message (CONFIGURATION UPDATE COMMAND) for the terminal through the BBU, UPDATEs the slice information of the terminal and informs the terminal of newly adding an available slice S-NSSAI.

In an exemplary embodiment, there is provided a slice management method based on pico-base station terminal location information, as shown in fig. 1, the method including:

and the baseband unit BBU receives a slice configuration updating command issued by the core network for the terminal, and sends a signed slice configuration strategy S-NSSAI to the terminal, and indicates that the terminal can use the resource marked by the slice configuration strategy S-NSSAI signed by the specific area.

As shown in fig. 2, in the process of establishing a cell in a pico-base station, a BBU issues configuration information of an uplink Sounding Reference Signal (SRS) to a HUB, and indicates SRS resources that need to be detected by the HUB at present. And the HUB detects all uplink data of the pRRUs according to the SRS resources indicated by the SRS configuration, selects the pRRU with the highest signal-to-noise ratio, associates the number with the SRS resources to form a message, and then sends the message to the BBU. After receiving the message, the BBU queries which terminal belongs according to the SRS resource, thereby determining the pRRU position information of the terminal, and then sends the current terminal position information (CRI) to the core network.

In an example, in a slice management method based on pico-base station terminal location information, the HUB detects, according to the SRS resource to be detected, the signal-to-noise ratio of the SRS on each remote unit pRRU, and specifically, as shown in fig. 3, a flow of calculating the SRS signal-to-noise ratio of a certain pRRU is as follows:

locally generating SRS frequency domain data;

conjugate multiplication is carried out on the SRS data of the received frequency domain and the SRS frequency domain data generated locally to obtain a channel coefficient H _ LS;

In an example, a slice management method based on pico-base station terminal location information, where a configuration message of a sounding reference signal SRS includes multiple SRS resource parameters and corresponding resource index numbers, as shown in table one below:

table-SRS configuration message

In an example, the report message includes a resource index number and a corresponding pRRU number, and the following table two shows that:

report message for SRS detection in Table two

In another exemplary embodiment, a method for slice management based on pico-base station terminal location information is provided, the method comprising:

the core network stores slicing strategies of different remote units pRRU and receives terminal position information from a baseband unit BBU, specifically, the core network stores slicing information of different areas pRRU and presets mapping relations of different pRRU and S-NSSAI.

and if the terminal supports the operation, issuing a slice configuration updating command to the BBU to indicate that the terminal can use a signed slice configuration strategy S-NSSAI.

After receiving a UE position information report message sent by a BBU, a core network needs to determine whether slice information needs to be updated, and the processing steps are as follows:

s1, a core network receives terminal position information CRI reported by a base station and stores corresponding position information;

and S2, judging whether the terminal supports the slicing strategy function based on the pRRU according to the subscription information of the terminal. If the slice policy function based on the pRRU is supported, performing step S3;

s3, querying a CRI and S-NSSAI mapping relation table, judging whether a pre-configured mapping relation CRI < - > S-NSSAI exists, and if the pre-configured mapping relation CRI < - > S-NSSAI exists, executing a step S4; otherwise, ending the processing;

s4, inquiring whether the signed NSSAI of the terminal is S-NSSAI, and if not, executing S5; otherwise, ending the processing;

s5, issuing a configuration updating command, updating terminal slice information, and informing the terminal of newly adding an available slice S-NSSAI;

in an example, a slice management method based on location information of a pico-base station terminal, where the method is to issue a slice configuration update command to a baseband unit BBU to indicate that a terminal may use a contracted slice configuration policy S-NSSAI, includes:

Specifically, after receiving the CRI reported by the BBU, the core network determines a preset slice configuration S-NSSAI associated with the pRRU location information where the terminal is located, and issues a corresponding slice configuration update command to the terminal through the BBU. And a terminal slice configuration updating command initiates a session establishment process of the slice by using a terminal routing policy (URSP), and performs specific slice service by using the slice channel.

Specifically, the following processing steps are carried out:

s6, issuing a terminal routing strategy (URSP) containing a network slice selection strategy, and informing a terminal service of initiating a slice selection strategy;

and S7, the terminal selects a slice from the available slice list as required and initiates a session establishment process of the slice. After the session is established, the slicing channel can be used for carrying out specific slicing service.

In another exemplary embodiment, there is provided a method for slice management based on pico-base station terminal location information, the method including:

In another exemplary embodiment, there is provided a pico station, including:

the base band unit BBU is also used for inquiring a pRRU number associated with the terminal according to the SRS resource sent by the extension unit HUB and sending the terminal position information to a core network;

In another exemplary embodiment, there is provided a core network device including:

a storage unit for storing slicing policies of different remote units pRRUs;

a receiver, configured to receive terminal location information from a baseband unit BBU, and determine whether a terminal supports a remote unit pRRU-based slicing policy according to the terminal location information, where the remote unit pRRU-based slicing policy includes:

In another exemplary embodiment, there is provided a terminal including:

a transmitter for transmitting sounding reference signals, SRSs, to a remote unit, pRRU, of a pico base station;

The above detailed description is for the purpose of describing the invention in detail, and it should not be construed that the detailed description is limited to the description, and it will be apparent to those skilled in the art that various modifications and substitutions can be made without departing from the spirit of the invention.

Claims

1. A slice management method based on position information of a pico-base station terminal is characterized by comprising the following steps:

the pico-base station receives a Sounding Reference Signal (SRS) sent by a terminal through a remote unit (pRRU), and issues a configuration message of the SRS to an extension unit (HUB) through a baseband unit (BBU), and indicates SRS resources required to be detected by the current extension unit (HUB);

the HUB detects the signal-to-noise ratio of Sounding Reference Signals (SRS) on each remote unit pRRU according to the SRS resource to be detected, associates the serial number of the remote unit pRRU with the highest signal-to-noise ratio with the corresponding SRS resource to form a report message, and reports the report message to a baseband unit (BBU);

2. The slice management method according to claim 1, wherein the detecting, by the HUB unit, the signal-to-noise ratio of SRS for sounding reference signals on each remote unit pRRU according to the SRS resource to be detected includes:

locally generating SRS frequency domain data;

3. The method of claim 1, wherein the SRS configuration message includes SRS resource parameters and corresponding resource index numbers.

4. The method as claimed in claim 3, wherein the report message includes a resource index number and a corresponding pRRU number.

5. A slice management method based on position information of a pico-base station terminal is characterized by comprising the following steps:

presetting mapping relations between different remote units pRRU and signed slice configuration strategies S-NSSAI; indicating a terminal entering a specific area to use a resource marked by a signed slice configuration strategy S-NSSAI;

6. The method of claim 5, wherein the step of issuing a slice configuration update command to the BBU to indicate that the terminal can use a contracted slice configuration policy S-NSSAI includes:

7. A slice management method based on position information of a pico-base station terminal is characterized by comprising the following steps:

8. A pico station, comprising:

the base band unit BBU is used for sending down the configuration message of the sounding reference signal SRS and indicating the SRS resource which needs to be detected currently;

the extension unit HUB is used for detecting the signal-to-noise ratio of the sounding reference signals SRS on each remote unit pRRU according to the SRS resource needing to be detected, associating the number of the remote unit pRRU with the highest signal-to-noise ratio with the corresponding SRS resource to form a report message, and reporting the report message to the baseband unit BBU;

9. A core network device, comprising:

a storage unit for storing slicing strategies of different remote units pRRUs;

and the transmitter is used for issuing a slice configuration update command to the BBU and indicating that the terminal can use a signed slice configuration strategy S-NSSAI.

10. A terminal, comprising: