CN111988853B - System information transmission method in NR-U system - Google Patents

Abstract

The embodiment of the invention provides a system information transmission method in an NR-U system, which is applied to a base station and comprises the following steps: acquiring system information SI request information reported by a target terminal UE, wherein the SI request information carries an identification code of the target UE; if judging that the available unlicensed spectrum resources do not exist in the SI window associated with the target SI, when the subsequent listen-before-talk (LBT) is successful, the target SI is issued to the target UE by utilizing the RRC special message, wherein the target SI is the SI requested by the target UE and indicated by the SI request information. According to the system information transmission method in the NR-U system, the identification code of the UE is carried in the SI request information reported by the UE, so that the UE can still receive the SI in time by utilizing the RRC special message when the subsequent LBT is successful when the LBT is unsuccessful in the SI window associated with the SI, and the next SI transmission period is not required to be waited, thereby reducing the transmission delay and remarkably improving the system performance.

Description

System information transmission method in NR-U system

Technical field

The present invention relates to the field of communication technology, and in particular, to a system information transmission method in an NR-U system.

Background technique

In the field of mobile communications, spectrum resources are the core resource that promotes industrial development. With the rapid development of mobile communications, the problem of spectrum resource shortage has become increasingly prominent. In order to solve this problem, on the one hand, new technologies such as massive antennas (MassiveMIMO) and ultra-dense networking (UDN) are used to improve network capacity; on the other hand, available spectrum resources are continuously developed.

The unlicensed frequency bands that currently exist in the 5GHz frequency band without permission are still resources worth exploring. In order to be able to use this unlicensed frequency band, 3GPP proposed assisted licensed access (LAA) technology, which uses carrier aggregation to jointly use unlicensed frequency bands and licensed frequency bands to achieve higher data rates and make users feel more comfortable. Good application experience. However, since WiFi network deployment is also in unlicensed frequency bands, applying New Radio (NR) technology directly to unlicensed frequency bands will inevitably cause interference to Wi-Fi. Therefore, before data transmission, the base station needs to first perform a listen-before-talk (LBT) operation to select available spectrum resources and ultimately achieve harmonious coexistence with WiFi.

In LTE, system information (SI) is cell-level information, which is effective for all terminals (UE) accessing the cell. It contains three types of RRC messages for transmitting SI, namely MIB messages, SIB1 messages, and one or more SI messages. However, in NR, to reduce SI broadcast overhead, there are two different types of SIB: one type is sent periodically like SIB in LTE, and the other type is sent only when there is a request from the UE type, that is, the SI request function is introduced.

For SI requests, in NR, there are two main request methods, namely SI requests through msg1 and msg3. For msg1 to request SI, it is mainly implemented through the RRC configuration-specific PRACH occasion, while for msg3 to request SI, it is mainly requested for SI through the RRCSystemInfoRequest message. In addition, SI requests can also be initiated based on two-step random access msgA, and related content is still under discussion. However, in the New Radio Unlicensed Spectrum (NR-U) system, due to the uncertainty of the channel state, there may be situations where the SI request is unsuccessful. At this time, the UE needs to wait for the next cycle to receive the requested SI in the SI window. , which introduces a large waiting delay and seriously affects system performance. Therefore, how to successfully and efficiently obtain SI in the NR-U system is an important issue that needs to be solved at present.

Contents of the invention

The purpose of the embodiments of the present invention is to provide a system information transmission method in an NR-U system that overcomes the above problems or at least partially solves the above problems.

In order to solve the above technical problems, on the one hand, embodiments of the present invention provide a system information transmission method in an NR-U system, which is applied to a base station and includes:

Obtain the system information SI request information reported by the target terminal UE, where the SI request information carries the identification code of the target UE;

If it is determined that there are no available unlicensed spectrum resources within the SI window associated with the target SI, then when the listen-before-talk LBT succeeds, the RRC proprietary message is used to deliver the target SI to the target UE. , the target SI is the SI requested by the target UE indicated by the SI request information.

Further, after obtaining the system information SI request information reported by the target terminal UE, the method further includes:

If it is determined that there are available unlicensed spectrum resources within the SI window, the target SI is broadcast.

Further, using the RRC proprietary message to deliver the target SI to the target UE specifically includes:

Establish a new RRC proprietary message to carry the target SI;

Send the new RRC specific message to the target UE.

Further, using the RRC dedicated message to deliver the target SI to the target UE specifically includes:

Add the relevant information elements of the target SI to the existing RRC proprietary message;

Deliver the existing RRC specific message to the target UE.

Further, the target SI is carried in msg4.

Further, the SI request information is carried in msg1, msg3 or msgA.

Further, the identification code is a cell radio network temporary identity C-RNTI.

Further, the existing RRC specific message is an RRC reconfiguration message.

On the other hand, embodiments of the present invention provide a system information transmission method in an NR-U system, which is applied to terminals and includes:

Report SI request information to the base station. The SI request information carries the identification code of the UE to trigger the base station to determine whether there are available unlicensed spectrum resources within the SI window associated with the target SI. The target SI is The SI requested by the UE indicated by the SI request information;

When there are no available unlicensed spectrum resources within the SI window, the target SI sent by the base station is received using an RRC dedicated message.

On the other hand, an embodiment of the present invention provides a base station, including:

An acquisition module, configured to acquire the system information SI request information reported by the target terminal UE, where the SI request information carries the identification code of the target UE;

The delivery module is used to use the RRC proprietary message to download the target SI when it is determined that there are no available unlicensed spectrum resources within the SI window associated with the target SI when the listen-before-talk LBT succeeds. Sent to the target UE, the target SI is the SI requested by the target UE indicated by the SI request information.

In another aspect, an embodiment of the present invention provides a terminal, including:

A reporting module configured to report SI request information to the base station, where the SI request information carries the identification code of the UE, to trigger the base station to determine whether there are available unlicensed spectrum resources within the SI window associated with the target SI, The target SI is the SI requested by the UE as indicated by the SI request information;

A receiving module, configured to receive the target SI sent by the base station by using an RRC proprietary message when there are no available unlicensed spectrum resources within the SI window.

In another aspect, an embodiment of the present invention provides an electronic device, including: a memory, a processor, and a computer program stored on the memory and executable on the processor. The processor executes the computer program. When, implement the steps of the above method.

In another aspect, embodiments of the present invention provide a non-transitory computer-readable storage medium on which a computer program is stored. When the computer program is executed by a processor, the steps of the above method are implemented.

The system information transmission method in the NR-U system provided by the embodiment of the present invention carries the identification code of the UE in the SI request information reported by the UE, so that the UE can still transmit the system information when the LBT fails within the SI window associated with the SI. When the subsequent LBT is successful, the RRC proprietary message can be used to receive the SI in time without waiting for the next SI transmission cycle, thereby reducing the transmission delay and significantly improving the system performance.

Description of the drawings

Figure 1 is a schematic diagram of a system information transmission method in an NR-U system provided by an embodiment of the present invention;

Figure 2 is a schematic diagram of signaling interaction of the system information transmission process provided by the embodiment of the present invention;

Figure 3 is a schematic diagram of a base station provided by an embodiment of the present invention;

FIG. 4 is a schematic structural diagram of an electronic device according to an embodiment of the present invention.

Detailed ways

In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments These are some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

Figure 1 is a schematic diagram of a system information transmission method in an NR-U system provided by an embodiment of the present invention. As shown in Figure 1, an embodiment of the present invention provides a system information transmission method in an NR-U system, the execution subject of which is a base station. , the method includes:

Step S101: Obtain the system information SI request information reported by the target terminal UE, where the SI request information carries the identification code of the target UE;

Step S102: If it is determined that there are no available unlicensed spectrum resources within the SI window associated with the target SI, then when the listen-before-talk LBT succeeds, the RRC proprietary message is used to deliver the target SI to the target SI. For the target UE, the target SI is the SI requested by the target UE indicated by the SI request information.

Specifically, the base station involved in the embodiment of the present invention includes an acquisition module and a sending module, and the UE involved in the embodiment of the present invention includes a reporting module and a receiving module.

Figure 2 is a schematic diagram of signaling interaction in the system information transmission process provided by an embodiment of the present invention. As shown in Figure 2, when the UE needs to obtain the target SI, it reports SI request information to the base station through the reporting module. The SI request information can be RRCSystemInfoRequest message, the SI request information carries the UE identification code ID.

The base station obtains the SI request information reported by the UE through the acquisition module.

After the base station obtains the SI request information reported by the UE, if there are currently no available unlicensed spectrum resources within the SI window associated with the target SI, the base station identifies the UE based on the UE's ID, and then performs the subsequent LBT When successful, the target SI is delivered to the UE through the delivery module and the RRC proprietary message.

The UE receives the RRC specific message sent by the base station through the receiving module and parses the target SI from it.

For example, UE1 needs to obtain the target SI, and UE1 reports RRCSystemInfoRequest information to base station A through the reporting module. The RRCSystemInfoRequest information carries UE1's ID 12345.

Base station A obtains the RRCSystemInfoRequest information reported by UE1 through the acquisition module.

After base station A obtains the RRCSystemInfoRequest information reported by UE1, if there are currently no available unlicensed spectrum resources within the SI window associated with the target SI, base station A identifies the UE1 based on the ID 12345 of UE1, and then, in the subsequent LBT When successful, the target SI is carried in the RRC dedicated message and delivered to UE1 through the delivery module.

UE1 receives the RRC specific message sent by base station A through the receiving module, and parses the target SI from it.

The system information transmission method in the NR-U system provided by the embodiment of the present invention carries the identification code of the UE in the SI request information reported by the UE, so that the UE can still transmit the system information when the LBT fails within the SI window associated with the SI. When the subsequent LBT is successful, the RRC proprietary message can be used to receive the SI in time without waiting for the next SI transmission cycle, thereby reducing the transmission delay and significantly improving the system performance.

Based on the above embodiment, further, after obtaining the system information SI request information reported by the target terminal UE, the method further includes:

If it is determined that there are available unlicensed spectrum resources within the SI window, the target SI is broadcast.

Specifically, when the UE needs to obtain the target SI, it reports SI request information to the base station through the reporting module. The SI request information may be an RRCSystemInfoRequest message, and the SI request information carries the UE's identification code ID.

The base station obtains the SI request information reported by the UE through the acquisition module.

After obtaining the SI request information reported by the UE, the base station performs an LBT operation to determine whether there are currently available unlicensed spectrum resources within the SI window associated with the target SI. If there are currently no available unlicensed spectrum resources within the SI window associated with the target SI, the base station identifies the UE based on the UE's ID, and then, when the subsequent LBT is successful, the base station uses the RRC proprietary The message delivers the target SI to the UE.

The UE receives the RRC specific message sent by the base station through the receiving module and parses the target SI from it.

If there are currently available unlicensed spectrum resources within the SI window associated with the target SI, the base station broadcasts the target SI through the delivery module.

The UE receives the target SI broadcast by the base station through the receiving module.

The system information transmission method in the NR-U system provided by the embodiment of the present invention carries the identification code of the UE in the SI request information reported by the UE, so that the UE can still transmit the system information when the LBT fails within the SI window associated with the SI. When the subsequent LBT is successful, the RRC proprietary message can be used to receive the SI in time without waiting for the next SI transmission cycle, thereby reducing the transmission delay and significantly improving the system performance.

Based on the above embodiments, further, the use of RRC proprietary messages to deliver the target SI to the target UE specifically includes:

Establish a new RRC proprietary message to carry the target SI;

Send the new RRC specific message to the target UE.

Specifically, when the UE needs to obtain the target SI, it reports SI request information to the base station through the reporting module. The SI request information may be an RRCSystemInfoRequest message, and the SI request information carries the UE's identification code ID.

The base station obtains the SI request information reported by the UE through the acquisition module.

After obtaining the SI request information reported by the UE, the base station performs an LBT operation to determine whether there are currently available unlicensed spectrum resources within the SI window associated with the target SI. If there are currently no available unlicensed spectrum resources within the SI window associated with the target SI, the base station identifies the UE based on the UE's ID, and then, when the subsequent LBT is successful, the base station uses the RRC proprietary The message delivers the target SI to the UE. The base station can create a new RRC proprietary message RRCSystemInformation, carry the SI in the RRCSystemInformation message, and then deliver the RRCSystemInformation to the UE.

The UE receives the RRCSystemInformation message sent by the base station through the receiving module and parses the target SI from it.

If there are currently available unlicensed spectrum resources within the SI window associated with the target SI, the base station broadcasts the target SI through the delivery module.

The UE receives the target SI broadcast by the base station through the receiving module.

The system information transmission method in the NR-U system provided by the embodiment of the present invention carries the identification code of the UE in the SI request information reported by the UE, so that the UE can still transmit the system information when the LBT fails within the SI window associated with the SI. When the subsequent LBT is successful, the RRC proprietary message can be used to receive the SI in time without waiting for the next SI transmission cycle, thereby reducing the transmission delay and significantly improving the system performance.

Based on the above embodiments, further, the use of RRC proprietary messages to deliver the target SI to the target UE specifically includes:

Add the relevant information elements of the target SI to the existing RRC proprietary message;

Deliver the existing RRC specific message to the target UE.

Specifically, when the UE needs to obtain the target SI, it reports SI request information to the base station through the reporting module. The SI request information may be an RRCSystemInfoRequest message, and the SI request information carries the UE's identification code ID.

The base station obtains the SI request information reported by the UE through the acquisition module.

After obtaining the SI request information reported by the UE, the base station performs an LBT operation to determine whether there are currently available unlicensed spectrum resources within the SI window associated with the target SI. If there are currently no available unlicensed spectrum resources within the SI window associated with the target SI, the base station identifies the UE based on the UE's ID, and then, when the subsequent LBT is successful, the base station uses the RRC proprietary The message delivers the target SI to the UE. The base station can reuse and extend the existing RRC proprietary message, add the relevant information element RRCSysteminformation-IEs of the target SI, and then deliver the existing RRC proprietary message. to the UE.

The UE receives the existing RRC proprietary message sent by the base station through the receiving module, and parses the target SI from it.

If there are currently available unlicensed spectrum resources within the SI window associated with the target SI, the base station broadcasts the target SI through the delivery module.

The UE receives the target SI broadcast by the base station through the receiving module.

The system information transmission method in the NR-U system provided by the embodiment of the present invention carries the identification code of the UE in the SI request information reported by the UE, so that the UE can still transmit the system information when the LBT fails within the SI window associated with the SI. When the subsequent LBT is successful, the RRC proprietary message can be used to receive the SI in time without waiting for the next SI transmission cycle, thereby reducing the transmission delay and significantly improving the system performance.

Based on the above embodiments, further, the target SI is carried in msg4.

Specifically, when the UE needs to obtain the target SI, it reports SI request information to the base station through the reporting module. The SI request information may be an RRCSystemInfoRequest message, and the SI request information carries the UE's identification code ID.

The base station obtains the SI request information reported by the UE through the acquisition module.

After obtaining the SI request information reported by the UE, the base station performs an LBT operation to determine whether there are currently available unlicensed spectrum resources within the SI window associated with the target SI. If there are currently no available unlicensed spectrum resources within the SI window associated with the target SI, the base station identifies the UE based on the UE's ID, and then, when the subsequent LBT is successful, the base station uses the RRC proprietary The message delivers the target SI to the UE. Among them, the RRC specific message carrying the target SI is carried in msg4.

The UE receives the RRC proprietary message sent by the base station through the receiving module and parses the target SI from it.

If there are currently available unlicensed spectrum resources within the SI window associated with the target SI, the base station broadcasts the target SI through the delivery module.

The UE receives the target SI broadcast by the base station through the receiving module.

The system information transmission method in the NR-U system provided by the embodiment of the present invention carries the identification code of the UE in the SI request information reported by the UE, so that the UE can still transmit the system information when the LBT fails within the SI window associated with the SI. When the subsequent LBT is successful, the RRC proprietary message can be used to receive the SI in time without waiting for the next SI transmission cycle, thereby reducing the transmission delay and significantly improving the system performance.

Based on the above embodiments, further, the SI request information is carried in msg1, msg3 or msgA.

Specifically, when the UE needs to obtain the target SI, it reports SI request information to the base station through the reporting module. The SI request information may be an RRCSystemInfoRequest message, and the SI request information carries the UE's identification code ID. The SI request information can be carried in msg1, msg3 or msgA.

The base station obtains the SI request information reported by the UE through the acquisition module.

After obtaining the SI request information reported by the UE, the base station performs an LBT operation to determine whether there are currently available unlicensed spectrum resources within the SI window associated with the target SI. If there are currently no available unlicensed spectrum resources within the SI window associated with the target SI, the base station identifies the UE based on the UE's ID, and then, when the subsequent LBT is successful, the base station uses the RRC proprietary The message delivers the target SI to the UE.

The UE receives the RRC proprietary message sent by the base station through the receiving module and parses the target SI from it.

If there are currently available unlicensed spectrum resources within the SI window associated with the target SI, the base station broadcasts the target SI through the delivery module.

The UE receives the target SI broadcast by the base station through the receiving module.

The system information transmission method in the NR-U system provided by the embodiment of the present invention carries the identification code of the UE in the SI request information reported by the UE, so that the UE can still transmit the system information when the LBT fails within the SI window associated with the SI. When the subsequent LBT is successful, the RRC proprietary message can be used to receive the SI in time without waiting for the next SI transmission cycle, thereby reducing the transmission delay and significantly improving the system performance.

Based on the above embodiments, further, the identification code is a cell radio network temporary identifier C-RNTI.

Specifically, when the UE needs to obtain the target SI, it reports SI request information to the base station through the reporting module. The SI request information may be an RRCSystemInfoRequest message, and the SI request information carries the UE's identification code ID. In the embodiment of the present invention, the cell wireless network temporary identifier C-RNTI is used as the ID of the UE.

The base station obtains the SI request information reported by the UE through the acquisition module.

After obtaining the SI request information reported by the UE, the base station performs a LBT operation to determine whether there is currently available unauthorized authorization within the SI window associated with the target SI. If there is currently no available unauthorized authorization within the SI window associated with the target SI, the base station identifies the UE based on the UE's ID. Then, when the subsequent LBT is successful, the base station uses the RRC proprietary message to send the The target SI is delivered to the UE.

The UE receives the RRC proprietary message sent by the base station through the receiving module and parses the target SI from it.

If there are currently available unlicensed spectrum resources within the SI window associated with the target SI, the base station broadcasts the target SI through the delivery module.

The UE receives the target SI broadcast by the base station through the receiving module.

The system information transmission method in the NR-U system provided by the embodiment of the present invention carries the identification code of the UE in the SI request information reported by the UE, so that the UE can still transmit the system information when the LBT fails within the SI window associated with the SI. When the subsequent LBT is successful, the RRC proprietary message can be used to receive the SI in time without waiting for the next SI transmission cycle, thereby reducing the transmission delay and significantly improving the system performance.

Based on the above embodiments, further, the existing RRC specific message is an RRC reconfiguration message.

Specifically, when the UE needs to obtain the target SI, it reports SI request information to the base station through the reporting module. The SI request information may be an RRCSystemInfoRequest message, and the SI request information carries the UE's identification code ID.

The base station obtains the SI request information reported by the UE through the acquisition module.

After obtaining the SI request information reported by the UE, the base station performs an LBT operation to determine whether there are currently available unlicensed spectrum resources within the SI window associated with the target SI. If there are currently no available unlicensed spectrum resources within the SI window associated with the target SI, the base station identifies the UE based on the UE's ID, and then, when the subsequent LBT is successful, the base station uses the RRC proprietary The message delivers the target SI to the UE. The base station can reuse the existing RRC proprietary message RRCReconfiguration and extend it by adding the relevant information element RRCSysteminformation-IEs of the target SI. Then, the base station delivers the RRCReconfiguration message to the UE. UE.

The UE receives the RRCReconfiguration message sent by the base station through the receiving module and parses the target SI from it.

If there are currently available unlicensed spectrum resources within the SI window associated with the target SI, the base station broadcasts the target SI through the delivery module.

The UE receives the target SI broadcast by the base station through the receiving module.

The system information transmission method in the NR-U system provided by the embodiment of the present invention carries the identification code of the UE in the SI request information reported by the UE, so that the UE can still transmit the system information when the LBT fails within the SI window associated with the SI. When the subsequent LBT is successful, the RRC proprietary message can be used to receive the SI in time without waiting for the next SI transmission cycle, thereby reducing the transmission delay and significantly improving the system performance.

Embodiments of the present invention provide a system information transmission method in an NR-U system, the execution subject of which is a terminal. The method includes:

Report SI request information to the base station. The SI request information carries the identification code of the UE to trigger the base station to determine whether there are available unlicensed spectrum resources within the SI window associated with the target SI. The target SI is The SI requested by the UE indicated by the SI request information;

When there are no available unlicensed spectrum resources within the SI window, the target SI sent by the base station is received using an RRC dedicated message.

Specifically, the base station involved in the embodiment of the present invention includes an acquisition module and a sending module, and the UE involved in the embodiment of the present invention includes a reporting module and a receiving module.

Figure 2 is a schematic diagram of signaling interaction in the system information transmission process provided by an embodiment of the present invention. As shown in Figure 2, when the UE needs to obtain the target SI, it reports SI request information to the base station through the reporting module. The SI request information can be RRCSystemInfoRequest message, the SI request information carries the UE identification code ID.

The base station obtains the SI request information reported by the UE through the acquisition module.

After the base station obtains the SI request information reported by the UE, if there are currently no available unlicensed spectrum resources within the SI window associated with the target SI, the base station identifies the UE based on the UE's ID, and then performs the subsequent LBT When successful, the target SI is delivered to the UE through the delivery module and the RRC proprietary message.

The UE receives the RRC specific message sent by the base station through the receiving module and parses the target SI from it.

For example, UE1 needs to obtain the target SI, and UE1 reports RRCSystemInfoRequest information to base station A through the reporting module. The RRCSystemInfoRequest information carries UE1's ID 12345.

Base station A obtains the RRCSystemInfoRequest information reported by UE1 through the acquisition module.

After base station A obtains the RRCSystemInfoRequest information reported by UE1, if there are currently no available unlicensed spectrum resources within the SI window associated with the target SI, base station A identifies the UE1 based on the ID 12345 of UE1, and then, in the subsequent LBT When successful, the target SI is carried in the RRC dedicated message and delivered to UE1 through the delivery module.

UE1 receives the RRC specific message sent by base station A through the receiving module, and parses the target SI from it.

The system information transmission method in the NR-U system provided by the embodiment of the present invention carries the identification code of the UE in the SI request information reported by the UE, so that the UE can still transmit the system information when the LBT fails within the SI window associated with the SI. When the subsequent LBT is successful, the RRC proprietary message can be used to receive the SI in time without waiting for the next SI transmission cycle, thereby reducing the transmission delay and significantly improving the system performance.

Figure 3 is a schematic diagram of a base station provided by an embodiment of the present invention. As shown in Figure 3, an embodiment of the present invention provides a base station for executing the method described in any of the embodiments in which the execution subject is a base station, specifically including an acquisition module. 301 and delivery module 302, where:

The obtaining module 301 is used to obtain the system information SI request information reported by the target terminal UE, and the SI request information carries the identification code of the target UE; the issuing module 302 is used to determine that the SI associated with the target SI is If there are no available unlicensed spectrum resources in the window, then when the listen-before-talk LBT succeeds, the target SI is sent to the target UE using the RRC proprietary message, and the target SI is the SI request information. The indicated SI requested by the target UE.

Specifically, the UE involved in the embodiment of the present invention includes a reporting module and a receiving module.

Figure 2 is a schematic diagram of signaling interaction in the system information transmission process provided by an embodiment of the present invention. As shown in Figure 2, when the UE needs to obtain the target SI, it reports SI request information to the base station through the reporting module. The SI request information can be RRCSystemInfoRequest message, the SI request information carries the UE identification code ID.

The base station obtains the SI request reported by the UE through the obtaining module 301.

After the base station obtains the SI request information reported by the UE, if there are currently no available unlicensed spectrum resources within the SI window associated with the target SI, the base station identifies the UE based on the UE's ID, and then sends Module 302: Use the RRC proprietary message to deliver the target SI to the UE.

The UE receives the RRC specific message sent by the base station through the receiving module and parses the target SI from it.

For example, UE1 needs to obtain the target SI, and UE1 reports RRCSystemInfoRequest information to base station A through the reporting module. The RRCSystemInfoRequest information carries UE1's ID 12345.

Base station A obtains the RRCSystemInfoRequest information reported by UE1 through the acquisition module.

After base station A obtains the RRCSystemInfoRequest information reported by UE1, if there are currently no available unlicensed spectrum resources within the SI window associated with the target SI, base station A identifies the UE1 based on the ID 12345 of UE1, and then, in the subsequent LBT When successful, the target SI is carried in the RRC dedicated message and delivered to UE1 through the delivery module.

UE1 receives the RRC proprietary message sent by base station A through the receiving module, and parses the target SI from it.

Embodiments of the present invention provide a base station for executing the method described in any of the above embodiments in which the execution subject is a base station. The specific steps of executing the method described in any of the above embodiments through the base station provided in this embodiment are as follows: The above corresponding embodiments are the same and will not be described again here.

The base station provided by the embodiment of the present invention carries the identification code of the UE in the SI request information reported by the UE, so that when the LBT fails within the SI window associated with the SI, the UE can still use the RRC dedicated code when the subsequent LBT succeeds. When there is a message, SI is received in time without waiting for the next SI transmission cycle, thereby reducing transmission delay and significantly improving system performance.

An embodiment of the present invention provides a terminal for executing the method described in any of the above embodiments in which the execution subject is a terminal, specifically including a reporting module and a receiving module, wherein:

A reporting module configured to report SI request information to the base station, where the SI request information carries the identification code of the UE, to trigger the base station to determine whether there are available unlicensed spectrum resources within the SI window associated with the target SI, The target SI is the SI requested by the UE as indicated by the SI request information; a receiving module is configured to use the RRC proprietary message to receive the requested spectrum when there are no available unlicensed spectrum resources within the SI window. The target SI delivered by the base station.

Specifically, the base station involved in the embodiment of the present invention includes an acquisition module and a delivery module.

Figure 2 is a schematic diagram of signaling interaction in the system information transmission process provided by an embodiment of the present invention. As shown in Figure 2, when the UE needs to obtain the target SI, it reports SI request information to the base station through the reporting module. The SI request information can be RRCSystemInfoRequest message, the SI request information carries the UE identification code ID.

The base station obtains the SI request information reported by the UE through the acquisition module.

After the base station obtains the SI request information reported by the UE, if there are currently no available unlicensed spectrum resources within the SI window associated with the target SI, the base station identifies the UE based on the UE's ID, and then performs the subsequent LBT When successful, the target SI is delivered to the UE through the delivery module and the RRC proprietary message.

The UE receives the RRC proprietary message sent by the base station through the receiving module and parses the target SI from it.

For example, UE1 needs to obtain the target SI, and UE1 reports RRCSystemInfoRequest information to base station A through the reporting module. The RRCSystemInfoRequest information carries UE1's ID 12345.

Base station A obtains the RRCSystemInfoRequest information reported by UE1 through the acquisition module.

After base station A obtains the RRCSystemInfoRequest information reported by UE1, if there are currently no available unlicensed spectrum resources within the SI window associated with the target SI, base station A identifies the UE1 based on the ID 12345 of UE1, and then, in the subsequent LBT When successful, the target SI is carried in the RRC dedicated message and delivered to UE1 through the delivery module.

UE1 receives the RRC specific message sent by base station A through the receiving module, and parses the target SI from it.

An embodiment of the present invention provides a terminal for executing the method described in any of the above embodiments in which the execution subject is a terminal. The specific steps of executing the method described in any of the above embodiments through the terminal provided by this embodiment are as follows: The above corresponding embodiments are the same and will not be described again here.

The terminal provided by the embodiment of the present invention carries the identification code of the UE in the SI request information reported by the UE, so that when the LBT fails within the SI window associated with the SI, the UE can still use the RRC dedicated code when the subsequent LBT succeeds. When there is a message, SI is received in time without waiting for the next SI transmission cycle, thereby reducing transmission delay and significantly improving system performance.

Figure 4 is a schematic structural diagram of an electronic device provided by an embodiment of the present invention. As shown in Figure 4, the device includes: a processor (processor) 401, a memory (memory) 402, a bus 403, and an electronic device stored in the memory and available in A computer program that runs on a processor.

Among them, the processor 401 and the memory 402 complete communication with each other through the bus 403;

The processor 401 is used to call and execute the computer program in the memory 402 to perform the steps in the above method embodiments, for example, including:

Obtain the system information SI request information reported by the target terminal UE, and the SI request information carries the identification code of the target UE; if it is determined that there are no available unlicensed spectrum resources within the SI window associated with the target SI, Then when the listen-before-talk LBT succeeds, the RRC proprietary message is used to deliver the target SI to the target UE, where the target SI is the SI requested by the target UE indicated by the SI request information. .

Or, include:

Report SI request information to the base station. The SI request information carries the identification code of the UE to trigger the base station to determine whether there are available unlicensed spectrum resources within the SI window associated with the target SI. The target SI is The SI requested by the UE indicated by the SI request information; when there are no available unlicensed spectrum resources within the SI window, use the RRC proprietary message to receive the target SI issued by the base station.

In addition, the above-mentioned logical instructions in the memory can be implemented in the form of software functional units and can be stored in a computer-readable storage medium when sold or used as an independent product. Based on this understanding, the technical solution of the present invention essentially or the part that contributes to the existing technology or the part of the technical solution can be embodied in the form of a software product. The computer software product is stored in a storage medium, including Several instructions are used to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in various embodiments of the present invention. The aforementioned storage media include: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic disk or optical disk and other media that can store program code. .

Embodiments of the present invention provide a computer program product. The computer program product includes a computer program stored on a non-transitory computer-readable storage medium. The computer program includes program instructions. When the program instructions are executed by a computer, The computer can perform the steps in each of the above method embodiments, including, for example:

Obtain the system information SI request information reported by the target terminal UE, and the SI request information carries the identification code of the target UE; if it is determined that there are no available unlicensed spectrum resources within the SI window associated with the target SI, Then when the listen-before-talk LBT succeeds, the RRC proprietary message is used to deliver the target SI to the target UE, where the target SI is the SI requested by the target UE indicated by the SI request information. .

Or, include:

Report SI request information to the base station. The SI request information carries the identification code of the UE to trigger the base station to determine whether there are available unlicensed spectrum resources within the SI window associated with the target SI. The target SI is The SI requested by the UE indicated by the SI request information; when there are no available unlicensed spectrum resources within the SI window, use the RRC proprietary message to receive the target SI issued by the base station.

Embodiments of the present invention provide a non-transitory computer-readable storage medium on which a computer program is stored. When the computer program is executed by a processor, the steps in the above method embodiments are implemented, for example, including:

Obtain the system information SI request information reported by the target terminal UE, and the SI request information carries the identification code of the target UE; if it is determined that there are no available unlicensed spectrum resources within the SI window associated with the target SI, Then when the listen-before-talk LBT succeeds, the RRC proprietary message is used to deliver the target SI to the target UE, where the target SI is the SI requested by the target UE indicated by the SI request information. .

Or, include:

Report SI request information to the base station. The SI request information carries the identification code of the UE to trigger the base station to determine whether there are available unlicensed spectrum resources within the SI window associated with the target SI. The target SI is The SI requested by the UE indicated by the SI request information; when there are no available unlicensed spectrum resources within the SI window, use the RRC dedicated message to receive the target SI issued by the base station.

The above-described embodiments of devices and equipment are only illustrative, in which the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units. That is, it can be located in one place, or it can be distributed across multiple network units. Some or all of the modules can be selected according to actual needs to achieve the purpose of the solution of this embodiment. Persons of ordinary skill in the art can understand and implement the method without any creative effort.

Through the above description of the embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by software plus a necessary general hardware platform, and of course, it can also be implemented by hardware. Based on this understanding, the part of the above technical solution that essentially contributes to the existing technology can be embodied in the form of a software product. The computer software product can be stored in a computer-readable storage medium, such as ROM/RAM, magnetic disk, optical disk, etc., including a number of instructions to cause a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in various embodiments or certain parts of the embodiments.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that it can still be used Modifications are made to the technical solutions described in the foregoing embodiments, or equivalent substitutions are made to some of the technical features; however, these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims (12)

1. A system information transmission method in the NR-U system, applied to base stations, which is characterized by including: Obtain the system information SI request information reported by the target terminal UE, where the SI request information carries the identification code of the target UE; If it is determined that there are no available unlicensed spectrum resources within the SI window associated with the target SI, then when the listen-before-talk LBT succeeds, the RRC proprietary message is used to deliver the target SI to the target UE. , the target SI is the SI requested by the target UE indicated by the SI request information; If it is determined that there are available unlicensed spectrum resources within the SI window, the target SI is broadcast. 2. The system information transmission method in the NR-U system according to claim 1, wherein the sending the target SI to the target UE using an RRC proprietary message specifically includes: Establish a new RRC proprietary message to carry the target SI; Send the new RRC specific message to the target UE. 3. The system information transmission method in the NR-U system according to claim 1, characterized in that the use of RRC proprietary messages to deliver the target SI to the target UE specifically includes: Add the relevant information elements of the target SI to the existing RRC proprietary message; Deliver the existing RRC specific message to the target UE. 4. The system information transmission method in the NR-U system according to claim 1, characterized in that the target SI is carried in msg4. 5. The system information transmission method in the NR-U system according to claim 1, characterized in that the SI request information is carried in msg1, msg3 or msgA. 6. The system information transmission method in the NR-U system according to claim 1, wherein the identification code is a cell radio network temporary identifier C-RNTI. 7. The system information transmission method in the NR-U system according to claim 3, wherein the existing RRC specific message is an RRC reconfiguration message. 8. A system information transmission method in the NR-U system, applied to terminals, characterized by including: Report SI request information to the base station. The SI request information carries the identification code of the UE to trigger the base station to determine whether there are available unlicensed spectrum resources within the SI window associated with the target SI. The target SI is The SI requested by the UE indicated by the SI request information; When there are no available unlicensed spectrum resources within the SI window, use an RRC proprietary message to receive the target SI issued by the base station; When there are available unlicensed spectrum resources within the SI window, the target SI broadcast by the base station is received. 9. A base station, characterized in that it includes: An acquisition module, configured to acquire the system information SI request information reported by the target terminal UE, where the SI request information carries the identification code of the target UE; The delivery module is used to use the RRC proprietary message to download the target SI when it is determined that there are no available unlicensed spectrum resources within the SI window associated with the target SI when the listen-before-talk LBT succeeds. Sent to the target UE, the target SI is the SI requested by the target UE indicated by the SI request information; A broadcast module, configured to broadcast the target SI if it is determined that there are available unlicensed spectrum resources within the SI window. 10. A terminal, characterized in that it includes: A reporting module configured to report SI request information to the base station, where the SI request information carries the identification code of the UE, to trigger the base station to determine whether there are available unlicensed spectrum resources within the SI window associated with the target SI, The target SI is the SI requested by the UE as indicated by the SI request information; A first receiving module configured to receive the target SI sent by the base station by using an RRC proprietary message when there are no available unlicensed spectrum resources within the SI window; The second receiving module is configured to receive the target SI broadcast by the base station when there are available unlicensed spectrum resources within the SI window. 11. An electronic device, comprising a memory, a processor, and a computer program stored on the memory and executable on the processor, characterized in that when the processor executes the computer program, it implements the following: The steps of the system information transmission method in the NR-U system according to any one of claims 1 to 8. 12. A non-transitory computer-readable storage medium with a computer program stored thereon, characterized in that when the computer program is executed by a processor, the NR-U system as claimed in any one of claims 1 to 8 is implemented. Steps in the system information transmission method.