CN110798861A

CN110798861A - Method for sending system information, CU entity and DU entity

Info

Publication number: CN110798861A
Application number: CN201810872214.6A
Authority: CN
Inventors: 许萌; 梁靖; 周叶
Original assignee: China Academy of Telecommunications Technology CATT
Current assignee: Datang Mobile Communications Equipment Co Ltd
Priority date: 2018-08-02
Filing date: 2018-08-02
Publication date: 2020-02-14
Anticipated expiration: 2038-08-02
Also published as: CN110798861B

Abstract

The invention discloses a method for sending system information, a CU entity and a DU entity, which are used for notifying the system information in a CU-DU separation scene. The method comprises the following steps: a central node CU entity of a wireless access network generates a first signaling carrying system information for a terminal configured with a first type of partial bandwidth BWP, wherein the first type of BWP is a BWP which is not configured with a public search space required for acquiring the system information in a broadcast mode; the CU entity sends the first signaling to a distribution node (DU) entity of the wireless access network so as to decide to send the first signaling to the terminal through the DU entity, and for the terminal configured with the first type BWP, the CU entity generates the first signaling for the terminal, thereby realizing the sending of the system information provided for the terminal in the connection state in the CU-DU scene.

Description

Method for sending system information, CU entity and DU entity

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a method for sending system information, a CU entity, and a DU entity.

Background

In a conventional Long Term Evolution (LTE) communication system, the carrier bandwidth of a cell is not greater than the transmission bandwidth of a terminal, so that a network side can configure the total uplink and downlink bandwidth of the cell to the terminal, and the terminal can work on the carrier bandwidth of the whole cell. However, in the fifth Generation (5Generation, 5G) communication system, a cell carrier bandwidth is much larger than a transmission bandwidth of a terminal, so that the entire cell carrier bandwidth is divided into a plurality of partial Bandwidths (BWPs), and one or more Downlink (DL) BWPs and one or more Uplink (UL) BWPs are configured to the terminal, but only one active DL BWP and UL BWP among the BWPs configured to the terminal, wherein the BWP associated with a cell-level Synchronization Signal and Physical Broadcast channel block (SSB) is an initial BWP (initial BWP), and the initial BWP is configured with a common search space for acquiring paging and system information, and terminals residing in the cell and connected terminals operating in the initial BWPs can listen to paging and system information of paging messages and bwmessages on the initial BWP. The network side may configure, according to the requirement, a common search space required for acquiring the system information in a broadcast manner for the other non-initial BWPs, and the BWP configured with the search space may broadcast the system information, otherwise, the BWP may not broadcast the system information. For a scenario in which a non-central node (CU) entity is separated from a Distributed node (DU) entity, the network side itself may know the BWP configured by the terminal and also know the BWP currently activated by the terminal, so that for a terminal in which the currently activated BWP configures a common search space required for acquiring System information in a broadcast manner, the network side may notify the updated System information in a broadcast manner, and the currently activated BWP does not configure a terminal in which the common search space required for acquiring System information in a broadcast manner, and the network side may notify the updated System information and/or a Public Warning System (PWS) notification in dedicated signaling.

However, in the CU-DU separation scenario, the CU entity is responsible for generating dedicated signaling and a part of broadcast messages (e.g., PWS notification), and the BWP currently activated by the terminal is determined by the DU entity, so the CU entity does not know whether the BWP currently activated by the terminal configures a common search space required for acquiring system information in a broadcast manner, and when system information update or PWS notification is required, the CU entity cannot determine which connected terminals can be notified by broadcast messages at the current time and which connected terminals need to be notified by dedicated signaling, and thus how to provide system information for connected terminals in the CU-DU separation scenario is an urgent problem to be solved at present.

Disclosure of Invention

The embodiment of the invention provides a method for sending system information, a CU entity and a DU entity, which are used for providing system information for a connected terminal in a CU-DU separation scene.

In a first aspect, a method for transmitting system information is provided, the method including:

a CU entity of a wireless access network generates a first signaling carrying system information for a terminal configured with a first type BWP, wherein the first type BWP is a BWP which is not configured with a common search space required for acquiring the system information in a broadcast mode;

and the CU entity sends the first signaling to a DU entity of the radio access network so as to send the first signaling to the terminal through the DU entity.

In the embodiment of the invention, for the terminals configured with the first type BWP, the CU entity generates the first signaling for the terminals, so as to send the first signaling to the DU entity, and further send the system information to the terminals through the DU entity, thereby realizing the purpose of providing the system information for the connected terminals in the CU-DU scene.

Optionally, the sending, by the CU entity, the first signaling to the DU entity of the radio access network includes:

the CU entity sends the first signaling to the DU entity by utilizing a first interface message between the existing CU entity and the DU entity, wherein the first interface message carries mark information used for indicating that the first signaling carries the system information; alternatively, the first and second electrodes may be,

and the CU entity sends the first signaling to the DU entity by utilizing a newly defined second interface message between the CU entity and the DU entity, wherein the second interface message is a special interface message for sending the first signaling.

In the embodiment of the invention, the CU entity can utilize the existing interface message with the CU entity to realize the sending of the first signaling, thereby avoiding adding new interface message and realizing the multiplexing of the interface message; or, a new dedicated interface message may be defined, so that the type of information carried in the interface message can be quickly known through the dedicated interface message.

Optionally, after the CU entity sends the first signaling to the DU entity of the radio access network, the method further includes:

the CU entity receives a first response message sent by the DU entity, wherein the first response message is used for indicating the terminal to acquire the system information in a broadcasting mode; alternatively, the first and second electrodes may be,

the CU entity receives a second response message sent by the terminal through the DU entity, wherein the second response message is used for representing that the terminal has received the first signaling; alternatively, the first and second electrodes may be,

and the CU entity receives a third response message sent by the DU entity, wherein the third response message is used for indicating the terminal which has successfully received the signaling and/or the terminal which is determined by the DU entity to abandon sending the first signaling.

In the embodiment of the present invention, the DU entity knows whether the terminal can obtain the system information in a broadcast manner at the currently activated BWP, so that the DU entity can determine whether to send the first signaling to the terminal after receiving the first signaling of the terminal, and if not, the DU entity feeds back a first response message to the CU entity to notify the CU entity that the terminal can obtain the system information in a broadcast manner, and the CU entity does not need to wait for a feedback response of the terminal; or, in order to unify the dedicated signaling processing manner, the DU entity may also send the first signaling to the terminal continuously, and then after the terminal confirms, the DU entity may feed back to the CU entity, so that the communication process is complete; alternatively, the DU entity may notify the transmission of the system information of the plurality of terminals by using one response message.

Optionally, the method further includes:

the CU entity determines whether the number of terminals configured with a first BWP is not less than a preset threshold value, wherein the first BWP is one of the first type of BWPs;

if the result is yes, the CU entity sends a first request message to the DU entity, where the first request message is used to request the DU entity to delete the first BWP from the configuration of some or all terminals configured with the first BWP; or, the CU entity sends a second request message to the DU entity, where the second request message is used to request the DU entity to configure the common search space for the first BWP.

Optionally, the method further includes:

the CU entity determines whether the number of terminals configured with the first type of BWP is not less than a preset threshold value;

if the determination result is yes, the CU entity sends a first request message to the DU entity, where the first request message is used to request the DU entity to delete the BWP of the first type from the configuration of part or all of the terminals configured with the BWP of the first type; or, the CU entity sends a second request message to the DU entity, where the second request message is used to request the DU entity to configure the common search space for part or all BWPs in the first type of BWP.

In the embodiment of the present invention, the CU entity may monitor the number of terminals that cannot acquire system information in a broadcast manner, and if the number of terminals of this type is large, the CU entity may request the DU entity to adjust the BWP configuration of the terminals, so as to avoid that too many terminals need to acquire system information through a dedicated signaling, reduce air interface and interface overhead, and avoid scheduling congestion.

Optionally, the sending, by the CU entity, the first request message to the DU entity includes:

the CU entity sends a first request message to the DU entity by using a first interface message between the CU entity and the DU entity, wherein the first interface message carries indication information indicating that the first interface message is used for requesting to delete the specified BWP or the first type BWP from the configuration of the terminal; alternatively, the first and second electrodes may be,

the CU entity transmits the first request message to the DU entity using a newly defined third interface message between itself and the DU entity, the third interface message being a dedicated interface message for requesting deletion of a specified BWP or the first type BWP from the configuration of the terminal.

Optionally, the first request message carries at least one of the following information:

flag information of the terminal;

flag information of BWP;

indication information indicating an operation type including a delete BWP operation and an add BWP operation;

indication information indicating an operation mode; the operation modes include a mode of deleting designated terminals or all terminals under the designated BWP, and a mode of deleting all terminals or designated terminals under all the first type BWPs.

Optionally, the sending, by the CU entity, a second request message to the DU entity includes:

the CU entity sends the second request message to the DU entity by using a first interface message between the CU entity and the DU entity, wherein the first interface message carries indication information indicating that the first interface message is used for requesting to configure the public search space; alternatively, the first and second electrodes may be,

and the CU entity sends the second request message to the DU entity by using a newly defined fourth interface message between the CU entity and the DU entity, wherein the fourth interface message is a special interface message for requesting to configure the public search space.

Optionally, the second request message carries at least one of the following information:

flag information of BWP;

flag information characterizing a type of the common search space;

flag information of the terminal;

indication information indicating a configuration manner including a manner of configuring the common search space for a specific BWP and a manner of configuring the common search space for all the first type BWPs.

In a second aspect, a method for transmitting system information is provided, the method comprising:

a DU entity of a wireless access network receives a first signaling carrying system information sent by a CU entity of the wireless access network, wherein the first signaling is used for notifying a terminal configured with a first type of BWP (broadband access point) of the system information, and the first type of BWP is a BWP which is not configured with a common search space required for acquiring the system information in a broadcast mode;

and the DU entity sends the first signaling to the terminal so that the terminal acquires the system information from the first signaling.

In the embodiment of the invention, after receiving the first signaling, the DU entity sends the first signaling to the terminal, thereby realizing the sending of the system information in the CU-DU scene.

Alternatively to this, the first and second parts may,

before the sending the first signaling to the terminal, the method further comprises:

the DU entity determining whether the currently activated BWP of the terminal configures the search space;

the sending, by the DU entity, the first signaling to the terminal includes:

and if the result is yes, the DU entity determines to discard the first signaling and abandon the sending of the first signaling, otherwise, the DU entity determines to send the first signaling to the terminal.

In the embodiment of the present invention, since the DU entity knows which terminals currently activate BWPs configured with the common search space required for acquiring system information in a broadcast manner, after receiving the first signaling of the terminal, the DU entity may discard the first signaling for the terminals currently activated BWPs configured with the common search space required for acquiring system information in a broadcast manner, thereby preventing the terminals of the type from repeatedly acquiring system information through dedicated signaling, reducing air interface overhead, and avoiding scheduling congestion.

Optionally, after the DU entity receives the first signaling carrying the system information sent by the CU entity, the method further includes:

the DU entity sends a first response message to the CU entity, wherein the first response message is used for indicating the terminal to acquire the system information in a broadcasting mode; alternatively, the first and second electrodes may be,

after receiving a second response message sent by the terminal, the DU entity forwards the second response message to the CU entity, wherein the second response message is used for representing that the terminal has received the first signaling; alternatively, the first and second electrodes may be,

and the DU entity sends a third response message to the CU entity, wherein the third response message is used for indicating the terminal which successfully receives the signaling and/or giving up the terminal which sends the first signaling.

In the embodiment of the present invention, the DU entity knows whether the terminal can acquire the system information in a broadcast manner in the currently activated BWP, so that the DU entity can determine whether to send the first signaling to the terminal after receiving the first signaling of the terminal, and if not, the DU entity feeds back a first response message to the CU entity to notify the CU entity that the terminal can acquire the system information in a broadcast manner, and the CU entity does not need to wait for a feedback response of the terminal; or, in order to unify the dedicated signaling processing manner, the DU entity may also send the first signaling to the terminal continuously, and then after the terminal confirms, the DU entity may feed back to the CU entity, so that the communication process is complete; alternatively, the DU entity may notify the transmission of the system information of the plurality of terminals by using one response message.

Optionally, the method further includes:

the DU entity receives a first request message sent by the CU entity, wherein the first request message is used for requesting to delete a first BWP from the configuration of part or all terminals configured with the first BWP, and the first BWP is one of the first type BWPs, or the first request message is used for requesting to delete the first type BWP from the configuration of part or all terminals configured with the first type BWP;

the DU entity deletes the specified BWP from the configuration of the specified terminal based on the first request message.

flag information of the terminal;

flag information of BWP;

Optionally, the method further includes:

the DU entity receives a second request message sent by the CU entity, where the second request message is used to request configuration of the common search space for the first BWP, where the first BWP is one of the first type BWPs, or the second request message is used to request configuration of the common search space for part or all of the first type BWPs;

the DU entity configures the common search space for a specified BWP based on the second request message.

flag information of BWP;

flag information characterizing a type of the common search space;

flag information of the terminal;

Optionally, the method further includes:

the DU entity determines whether the number of terminals configured with a first BWP is not less than a preset threshold value, wherein the first BWP is one of the first type BWPs;

if the result is yes, deleting the first BWP from the configuration of part or all of the terminals configured with the first BWP by the DU entity; alternatively, the common search space is configured for the first BWP.

Optionally, the method further includes:

the DU entity determining whether the number of terminals configured with the first type of BWP is not less than the preset threshold value;

if the result of the determination is yes, deleting the BWP of the first type from the configuration of part or all of the terminals configured with the BWP of the first type by the DU entity; alternatively, the common search space is configured for some or all BWPs in the first type of BWP.

In the embodiment of the present invention, the DU entity may also monitor the number of terminals that cannot acquire system information in a broadcast manner, and if the number of terminals of this type is large, the BWP configuration of the terminals is adjusted, so as to avoid that too many terminals need to acquire system information through a dedicated signaling, reduce air interface and interface overhead, and avoid scheduling congestion.

In a third aspect, a CU entity of a radio access network is provided, including:

a memory to store instructions;

a processor for reading the instructions in the memory, performing the following processes:

generating a first signaling carrying system information for a terminal configured with a first type of partial bandwidth BWP, wherein the first type of BWP is a BWP not configured with a common search space required for acquiring the system information in a broadcast mode;

sending the first signaling to a distribution node (DU) entity of the radio access network through a transceiver, so as to send the first signaling to the terminal through the DU entity;

the transceiver is used for transceiving data under the control of the processor.

Optionally, the processor is specifically configured to:

sending the first signaling to the DU entity by using a first interface message between the existing CU entity and the DU entity through the transceiver, wherein the first interface message carries flag information used for indicating that the first signaling carries the system information; alternatively, the first and second electrodes may be,

and sending the first signaling to the DU entity by using a newly defined second interface message between the CU entity and the DU entity through the transceiver, wherein the second interface message is a special interface message for sending the first signaling.

Optionally, the processor is further configured to:

receiving a first response message sent by the DU entity through the transceiver, wherein the first response message is used for indicating that the terminal can acquire the system information in a broadcast mode; alternatively, the first and second electrodes may be,

receiving, by the transceiver, a second response message sent by the terminal through the DU entity, where the second response message is used to characterize that the terminal has received the first signaling; alternatively, the first and second electrodes may be,

and receiving a third response message sent by the DU entity through the transceiver, where the third response message is used to indicate a terminal that has successfully received the signaling and/or a terminal that has determined by the DU entity to abandon sending the first signaling.

Optionally, the processor is further configured to:

determining whether the number of terminals configured with a first BWP is not less than a preset threshold value, wherein the first BWP is one of the first type of BWPs;

if the determination result is yes, sending a first request message to the DU entity through the transceiver, where the first request message is used to request the DU entity to delete the first BWP from the configuration of some or all terminals configured with the first BWP; or, sending a second request message to the DU entity through the transceiver, where the second request message is used to request the DU entity to configure the common search space for the first BWP.

Optionally, the processor is further configured to:

determining whether the number of terminals configured with the first type of BWP is not less than a preset threshold value;

if the determination result is yes, sending a first request message to the DU entity through the transceiver, where the first request message is used to request the DU entity to delete the BWP of the first type from the configuration of part or all of the terminals configured with the BWP of the first type; or, sending, by the transceiver, a second request message to the DU entity, where the second request message is used to request the DU entity to configure the common search space for part or all BWPs in the first-type BWP.

Optionally, the processor is specifically configured to:

sending, by the transceiver, a first request message to the DU entity using a first interface message between the existing CU entity and the DU entity, the first interface message carrying indication information indicating that the first interface message is used to request deletion of a specified BWP or the first type BWP from a configuration of a terminal; alternatively, the first and second electrodes may be,

transmitting, by the transceiver, the first request message to the DU entity using a newly defined third interface message between the CU entity and the DU entity, the third interface message being a dedicated interface message for requesting deletion of a specified BWP or the first type of BWP from a configuration of a terminal.

flag information of the terminal;

flag information of BWP;

Optionally, the processor is specifically configured to:

sending, by the transceiver, the second request message to the DU entity by using a first interface message between the existing CU entity and the DU entity, where the first interface message carries indication information indicating that the first interface message is used to request configuration of the common search space; alternatively, the first and second electrodes may be,

sending, by the transceiver, the second request message to the DU entity using a newly defined fourth interface message between the CU entity and the DU entity, where the fourth interface message is a dedicated interface message for requesting configuration of the common search space.

flag information of BWP;

flag information characterizing a type of the common search space;

flag information of the terminal;

In a fourth aspect, a DU entity of a radio access network is provided, including:

a memory to store instructions;

receiving, by a transceiver, first signaling carrying system information sent by a CU entity of the radio access network, where the first signaling is used to send the system information to a terminal configured with a first type of BWP, where the first type of BWP is a BWP not configured with a common search space required for acquiring the system information in a broadcast manner;

sending the first signaling to the terminal through the transceiver so that the terminal acquires the system information from the first signaling;

Optionally, the processor is specifically configured to:

determining whether the common search space is configured by a BWP currently activated by the terminal;

and if the result of the determination is positive, determining to abandon the first signaling and abandon the sending of the first signaling, otherwise, determining to send the first signaling to the terminal.

Optionally, the processor is further configured to:

sending a first response message to the CU entity through the transceiver, wherein the first response message is used for indicating that the terminal can acquire the system information in a broadcasting mode; alternatively, the first and second electrodes may be,

after receiving a second response message sent by the terminal through the transceiver, forwarding the second response message to the CU entity, wherein the second response message is used for representing that the terminal has received the first signaling; alternatively, the first and second electrodes may be,

and sending a third response message to the CU entity through the transceiver, wherein the third response message is used for indicating the terminal which successfully receives the signaling and/or abandoning the terminal which sends the first signaling.

Optionally, the processor is further configured to:

receiving, by the transceiver, a first request message sent by the CU entity, wherein the first request message is used to request that a first BWP, which is one of the BWPs of the first type, be deleted from a configuration of some or all terminals to which the first BWP has been configured, or the first request message is used to request that the BWP of the first type be deleted from a configuration of some or all terminals to which the BWP of the first type has been configured;

based on the first request message, the specified BWP is deleted from the configuration of the specified terminal.

flag information of the terminal;

flag information of BWP;

Optionally, the processor is further configured to:

receiving, by the transceiver, a second request message sent by the CU entity, wherein the second request message is used to request configuration of the common search space for a first BWP, the first BWP being one of the first type of BWPs, or the second request message is used to request configuration of the common search space for part or all of the first type of BWPs;

configuring the common search space for a specified BWP based on the second request message.

flag information of BWP;

flag information characterizing a type of the common search space;

flag information of the terminal;

Optionally, the processor is further configured to:

if the result of the determination is positive, deleting the first BWP from the configuration of part or all terminals configured with the first BWP; alternatively, the common search space is configured for the first BWP.

Optionally, the processor is further configured to:

determining whether the number of terminals configured with the first type of BWP is not less than the preset threshold value;

if so, deleting the BWP of the first type from the configuration of part or all terminals configured with the BWP of the first type; alternatively, the common search space is configured for some or all BWPs in the first type of BWP.

In a fifth aspect, there is provided a CU entity of a radio access network, comprising:

a generating unit, configured to generate a first signaling carrying system information for a terminal configured with a first type of partial bandwidth BWP, where the first type of BWP is a BWP not configured with a common search space required for acquiring system information in a broadcast manner;

a transceiving unit, configured to send the first signaling to a distribution node DU entity of the radio access network, so as to send the first signaling to the terminal through the DU entity.

Optionally, the transceiver unit is specifically configured to:

sending the first signaling to the DU entity by using a first interface message between the existing CU entity and the DU entity, wherein the first interface message carries flag information used for indicating that the first signaling carries the system information; alternatively, the first and second electrodes may be,

and sending the first signaling to the DU entity by utilizing a newly defined second interface message between the CU entity and the DU entity, wherein the second interface message is a special interface message for sending the first signaling.

Optionally, the transceiver unit is further configured to:

receiving a first response message sent by the DU entity, wherein the first response message is used for indicating the terminal to acquire the system information in a broadcast mode; alternatively, the first and second electrodes may be,

receiving a second response message sent by the terminal through the DU entity, wherein the second response message is used for representing that the terminal has received the first signaling; alternatively, the first and second electrodes may be,

and receiving a third response message sent by the DU entity, wherein the third response message is used for indicating the terminal which has successfully received the signaling and/or the terminal which is determined by the DU entity to abandon sending the first signaling.

Optionally, the CU entity further includes a first determining unit;

the first determining unit is configured to determine whether the number of terminals configuring a first BWP is not less than a preset threshold, where the first BWP is one of the first type of BWPs;

if the determination result is yes, the transceiver unit is further configured to send a first request message to the DU entity, where the first request message is used to request the DU entity to delete the first BWP from the configuration of part or all of the terminals configured with the first BWP; or, the transceiver unit is further configured to send a second request message to the DU entity, where the second request message is used to request the DU entity to configure the common search space for the first BWP.

Optionally, the CU entity further includes a second determining unit;

the second determining unit is configured to determine whether the number of terminals configuring the first type of BWP is not less than a preset threshold value;

if the determination result is yes, the transceiver unit is further configured to send a first request message to the DU entity, where the first request message is used to request the DU entity to delete the BWP of the first type from the configuration of part or all of the terminals configured with the BWP of the first type; or, the transceiver unit is further configured to send a second request message to the DU entity, where the second request message is used to request the DU entity to configure the common search space for part or all of the BWPs in the first-type BWPs.

Optionally, the transceiver unit is specifically configured to:

sending a first request message to the DU entity by using a first interface message between the existing CU entity and the DU entity, wherein the first interface message carries indication information indicating that the first interface message is used for requesting to delete the specified BWP or the first type BWP from the configuration of the terminal; alternatively, the first and second electrodes may be,

sending the first request message to the DU entity by using a newly defined third interface message between the CU entity and the DU entity, wherein the third interface message is a dedicated interface message for requesting to delete the specified BWP or the first type BWP from the configuration of the terminal.

flag information of the terminal;

flag information of BWP;

Optionally, the transceiver unit is specifically configured to:

sending the second request message to the DU entity by using a first interface message between the existing CU entity and the DU entity, wherein the first interface message carries indication information indicating that the first interface message is used for requesting to configure the public search space; alternatively, the first and second electrodes may be,

and sending the second request message to the DU entity by using a newly defined fourth interface message between the CU entity and the DU entity, wherein the fourth interface message is a dedicated interface message for requesting to configure the common search space.

flag information of BWP;

flag information characterizing a type of the common search space;

flag information of the terminal;

In a sixth aspect, a DU entity of a radio access network is provided, including:

a transceiving unit, configured to receive a first signaling carrying system information sent by a CU entity of the radio access network, where the first signaling is used to notify a terminal configured with a first type of BWP of the system information, and the first type of BWP is a BWP not configured with a common search space required for acquiring the system information in a broadcast manner;

the transceiver unit is further configured to send the first signaling to the terminal, so that the terminal acquires the system information from the first signaling.

Optionally, the DU entity further includes a first determining unit;

the first determining unit is configured to determine whether the common search space is configured by BWP currently activated by the terminal; and if the result of the determination is positive, determining to abandon the first signaling and abandon the sending of the first signaling, otherwise, determining to send the first signaling to the terminal.

Optionally, the transceiver unit is further configured to:

sending a first response message to the CU entity, wherein the first response message is used for indicating the terminal to acquire the system information in a broadcasting mode; alternatively, the first and second electrodes may be,

after receiving a second response message sent by the terminal, forwarding the second response message to the CU entity, wherein the second response message is used for representing that the terminal has received the first signaling; alternatively, the first and second electrodes may be,

and sending a third response message to the CU entity, wherein the third response message is used for indicating the terminal which successfully receives the signaling and/or abandoning the terminal which sends the first signaling.

Optionally, the transceiver unit is further configured to:

receiving a first request message sent by the CU entity, wherein the first request message is used to request to delete a first BWP from the configuration of some or all terminals that have configured the first BWP, and the first BWP is one of the BWPs of the first type, or the first request message is used to request to delete the BWP of the first type from the configuration of some or all terminals that have configured the BWP of the first type;

flag information of the terminal;

flag information of BWP;

Optionally, the transceiver unit is further configured to:

flag information of BWP;

flag information characterizing a type of the common search space;

flag information of the terminal;

Optionally, the DU entity further includes a second determining unit and a first configuration unit;

the second determining unit is configured to determine whether the number of terminals configuring a first BWP is not less than a preset threshold, where the first BWP is one of the first type of BWPs;

if the determination result is yes, the first configuration unit is configured to delete the BWP of the first type from the configuration of some or all terminals configured with the BWP of the first type; or, the first configuration unit is configured to configure the common search space for the first BWP.

Optionally, the DU entity further includes a third determining unit and a second configuration unit;

the third determining unit is configured to determine whether the number of terminals configuring the first type of BWP is not less than the preset threshold value;

if the determination result is yes, the second configuration unit is configured to delete the BWP of the first type from the configuration of some or all terminals configured with the BWP of the first type; or, the second configuring unit is configured to configure the common search space for a part of or all BWPs in the first type of BWP.

In a seventh aspect, a computer storage medium is provided,

the computer storage medium stores computer instructions that, when executed on a computer, cause the computer to perform the method of the first or second aspect.

Drawings

Fig. 1 is a schematic flowchart of a method for sending system information according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of a BWP configuration scheme provided by an embodiment of the present invention;

FIG. 3 is a flowchart illustrating the BWP management of a CU for a specific BWP according to an embodiment of the present invention;

FIG. 4 is a flowchart illustrating a CU performing BWP management for a first type of BWP according to an embodiment of the present invention;

fig. 5 is a flowchart illustrating a process of performing BWP management on a specific BWP by a DU according to an embodiment of the present invention;

fig. 6 is a flowchart illustrating a process of performing BWP management on a first type of BWP by a DU according to an embodiment of the present invention;

FIG. 7 is a schematic diagram of a structure of a CU entity according to an embodiment of the present invention;

fig. 8 is a schematic structural diagram of a DU entity according to an embodiment of the present invention;

FIG. 9 is a schematic diagram of another structure of a CU entity according to an embodiment of the present invention;

fig. 10 is a schematic structural diagram of a DU entity according to an embodiment of the present invention.

Detailed Description

In order to make the objects, 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 with reference to the drawings in the embodiments of the present invention.

The technical background of the embodiments of the present invention is described below.

Currently, a terminal in an idle state (idle) or an inactive state (inactive) may obtain a paging message and system information by monitoring an initialBWP. For a terminal in a connected state, if a currently active BWP configures a terminal that needs to acquire a common search space for system information by broadcast, the UE can listen to a system information update notification and/or a PWS notification indication by listening to a page of the currently active BWP, and can listen to updated system information and/or a PWS notification at a corresponding time.

For a scenario without CU-DU separation, the network side itself may know the BWP configured by the terminal in the connected state and also know the currently activated BWP of the terminal, so for the terminal whose currently activated BWP has configured the common search space required for acquiring the system information by broadcast, the network side may notify its system information update or PWS notification instruction by paging, and then send the updated system information or PWS notification to the terminal by broadcast. However, for the CU-DU separation scenario, the CU entity is responsible for generating the dedicated signaling and part of the broadcast message, and the BWP currently activated by the terminal is determined by the DU entity, so the CU entity does not know whether the BWP currently activated by the terminal configures the common search space required for acquiring the system information in a broadcast manner, and when system information update or PWS notification needs to be performed, the CU entity cannot determine which terminals in the connected state can be notified through the broadcast message and which terminals in the connected state need to be notified through the dedicated signaling at the current time, and thus how to provide the system information for the terminals in the connected state in the CU-DU separation scenario is an urgent problem to be solved at present.

In view of this, an embodiment of the present invention provides a method for sending system information, in which, for a terminal configured with a first type of BWP, a CU entity generates a first signaling for the terminal, and a DU entity knows whether the BWP currently activated by the terminal can obtain the system information in a broadcast manner, so that after receiving the first signaling of the terminal, the DU entity can determine whether to send the first signaling to the terminal, thereby providing the system information for a connected terminal in a CU-DU scenario.

The technical scheme provided by the embodiment of the invention is described below by combining the accompanying drawings.

Referring to fig. 1, an embodiment of the present invention provides a method for sending system information, and a flow of the method is described as follows. Since the method for sending the system information involves the interactive process between the CU entity and the DU entity, the processes performed by the CU entity and the DU entity will be described together in the following description of the flow.

S101: the CU entity generates first signaling carrying system information for a terminal configured with a first type of BWP.

In the embodiment of the present invention, a cell carrier bandwidth that can be utilized by a network side may be as high as 400MHz, which is much larger than a transmission bandwidth of a terminal by 20MHz, so that the entire cell carrier bandwidth is divided into a plurality of BWPs, and one or more BWPs are configured to the terminal, and a part of the BWPs are activated for uplink and downlink transmission of the terminal, where an activated downlink BWP is referred to as an active DL BWP, and an activated uplink BWP is referred to as an active UL BWP, and generally, for a terminal, only one bwdlp and one UL BWP are allowed to be activated at one time, and an inactivated BWP cannot be used for uplink and downlink signaling and data transmission. Fig. 2 is a schematic diagram of several BWP configurations.

In order to expand the coverage and simultaneously manage the UEs in a centralized manner, the network side may employ CU-DU separation deployment, where a Radio Resource Control (RRC) entity and a Packet Data Convergence Protocol (PDCP) entity of the network side are deployed in the CU entity, other underlying entities are deployed in the DU entity, the CU entity and the DU entity are connected through an F1 interface, and one CU entity may connect and manage multiple DU entities.

In the CU-DU separation scenario, the currently activated BWP of the terminal is decided by the DU entity, so the CU entity does not know the currently activated BWP of the terminal, but knows which BWPs the terminal has configured and for which BWPs the CU entity is known to be the first type of BWP, then the CU entity knows whether the first type of BWP is included in the configured BWPs of the terminal. Therefore, when the system information is updated or when the PWS is notified, the CU entity needs to send the updated system information or the PWS notification to the terminal, and the CU entity may generate the first signaling carrying the system information for the terminal configured with the first type of BWP, that is, as long as the BWP configuration of the terminal includes the first type of BWP, but the CU entity does not know which is the currently activated BWP, that is, does not know whether the terminal can acquire the system information at the currently activated BWP by broadcasting, and in order to be able to notify the system information to the terminal, the CU entity may generate the first signaling for the terminal, that is, choose to perform the notification of the system information through dedicated signaling.

The first type BWP is a BWP that does not configure a common search space required for acquiring system information in a broadcast manner. The common search space required for acquiring the system information in the broadcast manner at least includes a search space for acquiring a system information block 1 (SIB 1), and may also include a search space for acquiring other system information and a search space for acquiring a page.

In the embodiment of the present invention, if a common search space required for acquiring system information by broadcast is configured on all BWPs in the BWP configuration of the terminal, the terminal can always acquire updated system information by broadcast regardless of the currently activated BWP of the terminal, and therefore, for this type of terminal, the CU entity does not generate the first signaling for the terminal, but notifies the updated system information by broadcast.

Illustratively, the communication system includes terminal 1, terminal 2 and terminal 3, the BWP configured by the system for terminal 1 includes BWP1 and BWP2, the BWP configured by the system for terminal 2 includes BWP1 and BWP3, the BWP configured by the system for terminal 3 includes BWP2 and BWP3, where BWP1 is a first type BWP and BWP2 and BWP3 are non-first type BWPs, then BWP1 is included in the BWP configuration of terminal 1 and terminal 2, then the CU entity generates first signaling for terminal 1 and terminal 2, and for terminal 3, since the BWP2 and BWP3 included in the BWP configuration of the terminal 3 are both BWPs that can acquire system information in a broadcast manner, the CU entity can determine that the terminal 3 can acquire system information in a broadcast manner, a broadcast message for broadcasting system information, which may be, for example, a PWS notification, is generated and sent to the DU entity through an interface message between the CU entity and the DU entity.

S102: the CU entity sends the first signaling to a DU entity of the radio access network, and the DU entity receives the first signaling.

In the embodiment of the present invention, since the CU entity is only responsible for generating the dedicated signaling and part of the broadcast message (e.g., PWS notification) message, in order to send the first signaling to the terminal, the CU entity sends the generated first signaling to the DU entity, and then forwards the first signaling to the terminal through the DU entity.

Specifically, the CU entity may send the first signaling to the DU entity by using an existing first interface message between itself and the DU entity, that is, the first interface message may be an existing interface message between the CU entity and the DU entity, and in order to distinguish from other uses, the first interface message may carry flag information used for indicating that the first signaling carries system information, and then after receiving the first interface message, the DU entity may know that the first signaling including the system information is carried in the first interface message by using the flag information. Of course, the CU entity may not carry the flag information in the first interface message, and then the DU entity may also obtain the first signaling by analyzing the first interface message after receiving the first interface message, so as to know the content specifically carried by the first interface message.

Specifically, a second interface message between the new CU entity and the DU entity may also be defined, where the second interface message is dedicated to send the first signaling, and then the CU entity may send the first signaling to the DU entity by using the second interface message, and correspondingly, after receiving the second interface message, the DU entity may know that the message is an interface message carrying the first signaling according to the second interface message.

Following the above examples of the terminal 1 to the terminal 3, the CU entity may carry the first signaling generated for the terminal 1 and the terminal 2 in the same interface message and send the same interface message to the DU entity, or the CU entity may also carry the first signaling generated for the terminal 1 and the terminal 2 in the interface message respectively and send the same interface message to the DU entity.

In the embodiment of the present invention, after receiving the first signaling, the DU entity may send the first signaling to the terminal through the following two implementation manners.

First implementation

S103: and the DU entity sends the first signaling to the terminal.

In this embodiment of the present invention, after receiving the first signaling, the DU entity may determine a sending time of the first signaling according to a rule, so as to send the first signaling to the corresponding terminal through the BWP currently activated by the terminal at the corresponding time. The calculation rule for the sending time belongs to the category of the prior art, and therefore, redundant description is not repeated here.

In the embodiment of the present invention, after receiving the broadcast message carrying the system information sent by the CU entity, the DU entity may also broadcast the broadcast message by using the BWP capable of acquiring the system information in the broadcast manner, so that a terminal that currently activates the BWP that is the BWP capable of acquiring the system information in the broadcast manner may listen to the broadcast message carrying the system information from the activated BWP.

Following the above examples of the terminals 1 to 3, the DU entity knows which BWP each terminal currently activates, for example, BWP1 is the currently activated BWP of the terminal 1, BWP2 is the currently activated BWP of the UE2, and BWP3 is the currently activated BWP of the UE 3. Then, after receiving the first signaling of terminal 1 and terminal 2, the DU entity calculates the transmission time of terminal 1 and terminal 2, respectively, so that the first signaling of terminal 1 is transmitted to terminal 1 through BWP1 at the time corresponding to terminal 1, and the first signaling of terminal 2 is transmitted to terminal 2 through BWP2 at the time corresponding to terminal 2. For the terminal 3, after receiving the broadcast message carrying the system information sent by the CU entity, the DU entity also broadcasts at a corresponding time through the BWP3, so that the terminal 3 may acquire the updated system information on the BWP3 through a broadcast manner. Since BWP2 may also broadcast system information, the DU entity will also broadcast at a corresponding time via BWP2 after receiving the broadcast message carrying system information sent by the CU entity.

S104: the terminal sends a second response message to the DU entity.

In the embodiment of the present invention, after receiving the first signaling, the terminal feeds back a second response message to the DU entity to notify the DU entity that the terminal itself has received the first signaling.

Following the above examples of the terminals 1 to 3, the terminal 1 receives its first signaling through the BWP1, so as to obtain updated system information from the first signaling, and after receiving the first signaling, the terminal 1 may feed back a second response message to the DU entity to notify the DU entity that it has received the first signaling; the terminal 2 receives the first signaling of itself through the BWP2, thereby acquiring the updated system information from the first signaling, and after receiving the first signaling, the terminal 2 may feed back a second response message to the DU entity to notify the DU entity that the first signaling has been received by itself.

For the terminal 2, the currently activated BWP2 is a BWP capable of acquiring system information in a broadcast manner, and then the terminal 2 receives the broadcast message through the BWP2 in addition to the first signaling, and further acquires updated system information through the broadcast message, and the terminal 2 may take the last received system information as the standard, for example, the terminal 2 acquires the system information through the broadcast message first and then acquires the system information through the first signaling, and then the terminal may take the system information acquired through the first signaling as the standard; alternatively, the terminal 2 may always control the system information acquired by one of the acquisition manners, for example, may control the system information acquired by the broadcast message or the system information acquired by the dedicated signaling.

For the terminal 3, the broadcast message is received through BWP3 to acquire the system information through the broadcast message.

S105: the DU entity sends a response message to the CU entity.

In the embodiment of the present invention, after receiving the second response message sent by the terminal, the DU entity further needs to send a response message to the CU entity to notify the CU entity of the receiving condition of the terminal.

Specifically, after receiving the second response message of the terminal, the DU entity may directly forward the second response message to the CU entity; or, the DU entity carries the receiving conditions of the multiple terminals in a third response message according to a second response message of the multiple terminals, and sends the third response message to the CU entity, for example, the DU entity may carry Identity information (Identity, ID) of the terminal that has succeeded in the first signaling in the third response message, and after receiving the third response message, the CU entity may know which terminals have successfully received the first signaling.

Second implementation

S106: the DU entity determines whether the BWP currently activated by the terminal is configured with the common search space.

In the embodiment of the present invention, since the DU entity knows which specific BWP currently activated by the terminal is, it can know whether the terminal can acquire the system information in a broadcast manner, and therefore, after receiving the first signaling, the DU entity can determine whether the BWP currently activated by the terminal corresponding to the first signaling configures a common search space required for acquiring the system information, thereby determining whether the first signaling needs to be sent to the terminal. In this way, for a terminal that can obtain system information in a broadcast manner, the DU entity may not send the first signaling to the terminal, thereby reducing resource consumption required for sending the first signaling, and also avoiding that too many terminals need to perform system information notification through dedicated signaling, reducing air interface overhead, and avoiding scheduling congestion.

S107: and if the determination result of the S106 is negative, the DU entity sends the first signaling to the terminal.

In the embodiment of the present invention, if the DU entity determines that the BWP currently activated by the terminal corresponding to the first signaling does not configure the common search space required for acquiring the system information, the terminal cannot acquire the system information in a broadcast manner, and the DU entity determines that the first signaling needs to be sent to the terminal. The DU entity determines a sending time of the first signaling according to the rule, so that the first signaling is sent to the corresponding terminal through the BWP currently activated by the terminal at the corresponding time. On the contrary, if the determination result of S106 is yes, that is, the DU entity determines that the BWP currently activated by the terminal corresponding to the first signaling configures the common search space required for acquiring the system information in a broadcast manner, the DU entity may determine to discard the first signaling and abandon sending the first signaling to the terminal.

In the embodiment of the present invention, after receiving the system information broadcast message sent by the CU entity, the DU entity also broadcasts the system information broadcast message through the BWP configured with the common search space required for acquiring the system information, so that a terminal that is currently activated by the BWP and is capable of acquiring the system information through a broadcast method can acquire the broadcasted system information from the BWP activated by the terminal through the broadcast method.

Following the above examples of the terminals 1 to 3, the DU entity is a node that knows which BWP each terminal currently activates, for example, the BWP currently activated by the terminal 1 is BWP1, the BWP currently activated by the UE2 is BWP2, and the BWP currently activated by the UE3 is BWP3, that is, the BWP currently activated by the terminal 1 is not configured with the common search space required for acquiring the system information by broadcast, and the BWP currently activated by the terminal 2 and the terminal 3 is configured with the common search space required for acquiring the system information by broadcast, then after the DU entity receives the first signaling of the terminal 1 and the terminal 2, the DU entity can determine that the terminal 1 cannot acquire the system information by broadcast, then the DU entity can send the first signaling of the terminal 1 to the terminal 1 by BWP1 at a corresponding time, and the terminal 2 can acquire the system information by broadcast, the DU entity after receiving the system information broadcast message sent by the CU entity, broadcast via BWP2 at the corresponding moment, and the DU entity does not need to send the first signaling of terminal 2 to terminal 2 any more, and the DU entity discards the first signaling of terminal 2. For the terminal 3, after receiving the system information broadcast message sent by the CU entity, the DU entity also broadcasts at a corresponding time through BWP3, and then the terminal 3 may acquire the updated system information on BWP3 through a broadcast manner.

S108: the terminal feeds back the second message to the DU entity.

After receiving the first signaling, the terminal feeds back a second response message to the DU entity to notify the DU entity that the first signaling has been received.

Following the above examples of the terminals 1 to 3, the terminal 1 receives its first signaling through the BWP1, so as to obtain updated system information from the first signaling, and after receiving the first signaling, the terminal 1 may feed back a second response message to the DU entity to notify the DU entity that it has received the first signaling; the first signaling of the terminal 2 is determined to be discarded by the DU entity, and then the terminal 2 and the terminal 3 are the same and both acquire updated system information in a broadcast manner, and then a second response message does not need to be fed back to the DU entity.

S109: the DU entity sends a response message to the CU entity.

In the embodiment of the present invention, after determining to discard the first signaling of a certain terminal, the DU entity needs to send a response message to the CU entity to notify the CU entity that the terminal can acquire updated system information in a broadcast manner, or after receiving the second response message sent by the terminal, the DU entity also needs to send a response message to the CU entity to notify the CU entity of the receiving condition of the terminal.

Specifically, after determining to discard the first signaling of a certain terminal, the DU entity generates a first response message for indicating that the terminal can acquire system information in a broadcast manner, and sends the first response message to the CU entity, so that the CU entity can know that the terminal acquires the system information in the broadcast manner after receiving the first response message, and thus the CU entity does not need to wait for a response message indicating whether the terminal receives the first signaling. The first response message may carry an ID of a terminal that abandons sending the first signaling and/or flag information indicating that the terminal air conditioner acquires system information in a broadcast manner. Since the DU entity does not transmit the first signaling to the terminal in such a manner that the DU entity transmits the first response message to the CU entity, S108 is not performed.

Specifically, after receiving the second response message of the terminal, the DU entity may directly forward the second response message to the CU entity; or after the DU entity receives the second response message of the terminal, the DU entity may generate a response message corresponding to the terminal according to the second response message of each terminal, and then send the response message to the CU entity; or, the DU entity carries the reception statuses of the plurality of terminals and the discard status of the first signaling in a third response message according to the first signaling and the second response message of the plurality of terminals, and sends the third response message to the CU entity, for example, the DU entity may carry the ID of the terminal that has successfully received the first signaling and/or the ID of the terminal that has abandoned sending the first signaling, which is determined by the DU entity, in the third response message, and after the CU entity receives the third response message, the CU entity may know which terminals have successfully received the first signaling and which terminals may notify in a broadcast manner. Of course, the DU entity may not feed back the transmission or reception of the CU entity first signaling.

Following the example of the terminals 1 to 3, the DU entity may determine to discard the first signaling of the terminal 2, and then may send a first response message to the CU entity to notify the CU entity that the first signaling of the terminal 2 has been discarded. For the terminal 1, the DU entity may receive a second response message fed back by the terminal 1, and the DU entity may directly send the second response message to the CU entity; or, the DU entity may extract the content in the second response message, generate a new response message, and send the new response message to the terminal; or, the DU entity may also integrate the sending or receiving statuses of the first signaling of the multiple terminals into a third response message, for example, the third response message may carry the IDs of the terminal 1 and the terminal 2, and carry the flag information indicating that the sending of the first signaling of the terminal 1 is successful, and abandon the flag information indicating that the sending of the first signaling of the terminal 2 is successful, so as to notify the sending or receiving statuses of the first signaling of the multiple terminals to the CU entity through the third response message; of course, the DU entity may also send a response message indicating the sending or receiving condition of the first signaling of each terminal to the CU entity for each terminal.

In the embodiment of the present invention, since the CU entity generates the first signaling for the terminal configured with the BWP of the first type, the number of the first signaling to be generated or the first signaling to be sent may be large, so that the overhead of an air interface may be increased, and scheduling congestion may be caused. In a specific implementation procedure, a preset threshold may be set, and the number of terminals configured with the first type of BWP is controlled not to be greater than the preset threshold.

Fig. 3 is a flowchart illustrating management of a specific BWP according to an embodiment of the present invention.

S301: the CU entity determines whether the number of terminals configured with the first BWP is not less than a preset threshold.

In this embodiment of the present invention, the BWP management may be performed based on a specific BWP, that is, the number of terminals configured with the specific BWP may be controlled not to be greater than a preset threshold value, and the following description specifically takes a first BWP as an example, where the first BWP is one of the first type BWPs.

Specifically, after setting the preset threshold, the CU entity may monitor the number of terminals configured with the first BWP, and determine whether the number of terminals configured with the first BWP is greater than or equal to the preset threshold.

S302: if the determination result of S301 is yes, the CU entity sends the first request message or the second request message to the DU entity.

In this embodiment of the present invention, if the CU entity determines that the number of terminals currently configured with the first BWP is greater than or equal to the preset threshold, more first signaling is required to notify the system information, which may increase overhead of an air interface and may cause scheduling congestion, and therefore, to avoid this, the CU entity may request the DU entity to reconfigure such terminals, and the CU entity may send a first request message to the DU entity, where the first request message is used to request the DU entity to delete the first BWP from the configuration of some or all terminals configured with the first BWP, so as to reduce the number of terminals configured with the first BWP.

The first request message carries at least one of the following information:

the identification information of the terminal may be, for example, an ID of the terminal;

the flag information of the BWP may be, for example, an ID of the first BWP;

indication information indicating an operation type, the operation type including a delete BWP operation and an add BWP operation;

indication information indicating an operation mode; the operation mode includes a mode of deleting a specific terminal or all terminals under a specific BWP. The specified terminal refers to a terminal indicated by the flag information of the terminal carried in the first request message, and the specified BWP refers to a BWP indicated by the flag information of the BWP carried in the first request message, which may be, for example, the first BWP. When the first request message received by the DU entity indicates that the operation mode is to delete the designated terminal under the designated BWP, the DU entity deletes the BWP from the configuration of the terminal according to the terminal flag information and the BWP flag information carried in the first request message; when the first request message received by the DU entity indicates that the operation mode is to delete all terminals under the specified BWP, for example, the first request message does not carry the identification information of the terminal or the carried identification information of the terminal indicates all terminals configured under the specified BWP, then the DU entity deletes the BWP from the configuration of all terminals configured with the BWP according to the BWP identification information carried by the first request message.

Specifically, the CU entity may send the first request message to the DU entity by using an existing first interface message between itself and the DU entity, that is, the first interface message may be an existing interface message between the CU entity and the DU entity, and in order to distinguish from other uses, the first interface message may carry indication information indicating that the first interface message is used to request to delete the specified BWP from the configuration of the terminal, and then after receiving the first interface message, the DU entity may know that the first interface message is used to request to delete the specified BWP from the configuration of the terminal by using the flag information.

Specifically, a third interface message between the new CU entity and the DU entity may be further defined, where the third interface message is a dedicated interface message for requesting to delete the specified BWP from the configuration of the terminal, and then the CU entity may send the first request message to the DU entity by using the third interface message, and correspondingly, after receiving the third interface message, the DU entity may know that the message is used to request to delete the specified BWP from the configuration of the terminal according to the third interface message.

In this embodiment of the present invention, the CU entity may further request the DU entity to configure a common search space required for acquiring the system information for the first BWP, so that the first BWP becomes the BWP capable of acquiring the system information in a broadcast manner, and the CU entity does not need to send a first signaling to the terminal configured with the BWP to reduce overhead and avoid scheduling congestion, and then the CU entity may send a second request message to the DU entity, where the second request message is used to request the DU entity to configure the common search space for the first BWP.

The second request message carries at least one of the following information:

the flag information of the BWP may be, for example, an ID of the first BWP;

flag information characterizing a type of the common search space, such as system information-Radio Network temporary Identity (SI-RNTI) indication information;

flag information of the terminal;

indication information indicating a configuration manner including a manner of configuring the common search space for a specified BWP. The specified BWP refers to the BWP indicated by the flag information of the BWP carried in the second request message, and may refer to the first BWP, for example. When the configuration indicated by the second request message configures the common search space for the specified BWP, the DU entity configures the common search space for the BWP indicated by the second request message.

Specifically, the CU entity may send the second request message to the DU entity by using an existing first interface message between itself and the DU entity, that is, the first interface message may be an existing interface message between the CU entity and the DU entity, and in order to distinguish from other uses, the first interface message may carry indication information indicating that the first interface message is used to request configuration of the common search space, and then after receiving the first interface message, the DU entity may know that the first interface message is used to request configuration of the common search space through the flag information.

Specifically, a fourth interface message between the new CU entity and the DU entity may also be defined, where the fourth interface message is a dedicated interface message for requesting configuration of the common search space, and then the CU entity may send the second request message to the DU entity by using the fourth interface message, and correspondingly, after receiving the fourth interface message, the DU entity may know that the message is used for requesting configuration of the common search space according to the fourth interface message.

Illustratively, the communication system includes BWP1, BWP2, and BWP3, where BWP1 is not configured with the common search space for acquiring system information, and BWP2 and BWP3 are both configured with the common search space. The BWP configured for the terminal 1 includes BWP1 and BWP2, the BWP configured for the terminal 2 includes BWP1 and BWP3, and the preset threshold set by the CU entity is 3, so that the number of terminals under the current BWP1 is 2, and is still smaller than the preset threshold, and the CU entity does not reconfigure the BWP configuration of the terminal.

After the terminal 3 accesses the network, the BWP configured by the network side includes BWP1 and BWP3, and then the number of terminals under BWP1 is already 3, and reaches a preset threshold, the CU entity reconfigures part of or all the terminals under BWP 1.

Specifically, the CU entity may send a first request message to the DU entity, requesting the DU entity to reconfigure some or all terminals under BWP1, for example, the CU entity may request the DU entity to delete the first BWP in the BWP configuration of some or all terminals under BWP1, so as to reduce the number of terminals under BWP 1. Alternatively, the CU entity may further send a second request message to the DU entity, requesting the DU entity to configure the common search space for acquiring the system information for BWP1, so that BWP1 becomes the BWP capable of acquiring the system information in a broadcast manner, and the terminal activating BWP1 may acquire the system information in a broadcast manner.

S303: the DU entity sends the reconfiguration message to the CU entity.

In this embodiment of the present invention, if the DU entity receives the first request message, the DU entity deletes the specified BWP of the specified terminal according to the indication of the first request message, for example, the first request message indicates the DU entity to delete BWP1 in the BWP configuration of the terminal 1, and then the DU entity releases BWP1 in the BWP configuration of the terminal 1, generates the reconfiguration message, and sends the reconfiguration message to the CU entity.

In this embodiment of the present invention, if the DU entity receives the second request message, the DU entity configures a common search space for acquiring system information for the specified BWP according to the indication of the second request message, for example, the second request message indicates that the DU entity configures a common search space for acquiring system information for BWP1, and then the DU entity configures a common search space for acquiring system information for BWP1, and reconfigures all terminals configured with BWP1 or terminals indicated in the second request message, generates a reconfiguration message for the terminals, and sends the reconfiguration message to the CU entity. The common search space at least includes a common search space for acquiring SIB1, and may also include a search space for acquiring other system information and a common search space for acquiring paging.

S304: the CU entity processes the reconfiguration message.

In the embodiment of the invention, after receiving the reconfiguration message sent by the DU entity, the CU entity sends the message to the corresponding terminal after carrying out corresponding processing, such as encryption and security completion.

Please refer to fig. 4, which is a flowchart illustrating a CU entity managing a first type BWP in a cell according to an embodiment of the present invention.

S401: the CU entity determines whether the number of terminals configured with the first type of BWP is not less than a preset threshold.

In the embodiment of the present invention, BWP management may be performed based on BWPs in a cell, that is, the number of terminals configured with the first type of BWP may be controlled not to be greater than a preset threshold.

Specifically, after setting the preset threshold, the CU entity may monitor the number of terminals configured with the first type of BWP and determine whether the number of terminals configured with the first type of BWP is greater than or equal to the preset threshold.

S402: if the determination result of S401 is yes, the CU entity sends the first request message or the second request message to the DU entity.

In this embodiment of the present invention, if the CU entity determines that the number of terminals currently configured with the first-type BWP is greater than or equal to the preset threshold, then more first signaling is required to notify the system information, which may increase overhead of an air interface and may cause scheduling congestion, and therefore to avoid this, the CU entity may request the DU entity to reconfigure such terminals, and then the CU entity may send a first request message to the DU entity, where the first request message is used to request the DU entity to delete the first-type BWP from the configuration of some or all terminals configured with the first-type BWP, so as to reduce the number of terminals configured with the first-type BWP.

The first request message carries at least one of the following information:

the flag information of BWP may be, for example, an ID of BWP;

indication information indicating an operation mode; the operation modes include a mode of deleting a designated terminal or all terminals under a designated BWP, and a mode of deleting all terminals or designated terminals under all BWPs of the first type. The designated terminal is the terminal indicated by the flag information of the terminal carried in the first request message, and the designated BWP is the BWP indicated by the flag information of the BWP carried in the first request message. When the first request message received by the DU entity indicates that the operation mode is to delete the designated terminal under the designated BWP, the DU entity deletes the BWP from the configuration of the terminal according to the terminal flag information and the BWP flag information carried in the first request message; for example, the request message does not carry the flag information of the terminal, or the carried flag information of the terminal indicates that all terminals configured under the specified BWP are specified, the DU entity deletes the BWP from the configuration of all terminals configured with the specified BWP. When the first request message received by the DU entity indicates that the operation mode is to delete the designated terminal under all the first-type BWPs, for example, the request message does not carry the BWP flag information, or the BWP flag information carried in the request message indicates all the first-type BWPs, the DU entity deletes all the first-type BWPs from the configuration of the terminal indicated by the first request message; for example, the request message does not carry the flag information of the terminal, or the carried flag information of the terminal indicates all terminals configured under the first-type BWP, the DU entity deletes the first-type BWP from the configuration of all terminals configured with the first-type BWP.

Specifically, the CU entity may send the first request message to the DU entity by using an existing first interface message between itself and the DU entity, that is, the first interface message may be an existing interface message between the CU entity and the DU entity, and in order to distinguish from other uses, the first interface message may carry indication information indicating that the first interface message is used to request to delete BWP from the configuration of the terminal, and then after receiving the first interface message, the DU entity may know that the first interface message is used to request to delete BWP from the configuration of the terminal through the flag information.

Specifically, a third interface message between the new CU entity and the DU entity may be further defined, where the third interface message is a dedicated interface message for requesting to delete BWP from the configuration of the terminal, and the CU entity may send the first request message to the DU entity by using the third interface message, and correspondingly, after receiving the third interface message, the DU entity may know that the message is used to request to delete BWP from the configuration of the terminal according to the third interface message.

In this embodiment of the present invention, the CU entity may further request the DU entity to configure, for the specified or all the first-type BWPs, the common search space required for acquiring the system information in the broadcast manner, so that the specified or all the first-type BWPs become the BWPs that can acquire the system information in the broadcast manner, and the CU entity does not need to send the first signaling to the terminal configured with the BWPs, so as to reduce overhead of an air interface and avoid scheduling congestion, and then the CU entity may send the second request message to the DU entity, where the second request message is used to request the DU entity to configure, for the first-type BWPs, the common search space.

The second request message carries at least one of the following information:

flag information of BWP;

flag information characterizing a type of the common search space, such as a system information-Radio Network temporary Identity (SI-RNTI);

flag information of the terminal;

and indication information indicating a configuration manner including a manner of configuring the common search space for a specific BWP and a manner of configuring the common search space for all the first type BWPs. The specified BWP refers to the BWP indicated by the flag information of the BWP carried in the second request message, and here, for example, may be the specified BWP of the first type. When the configuration mode indicated by the second request message configures the common search space for the specified BWP, the DU entity configures the common search space for the BWP indicated by the second request message; when the configuration manner indicated by the second request message configures the common search space for all the BWPs of the first type, for example, the request message does not carry the flag information of the BWP, or the carried flag information of the BWP indicates all the BWPs of the first type, or specifies all the BWPs of the first type configured by the terminal, the DU entity configures the common search space for all the BWPs of the first type or all the BWPs of the first type configured by the specified terminal.

Illustratively, the communication system includes BWP1, BWP2, BWP3 and BWP4, wherein BWP1 and BWP4 are not configured with a common search space for acquiring system information, and BWP2 and BWP3 are both configured with the common search space. The BWP configured for the terminal 1 includes BWP1 and BWP2, the BWP configured for the terminal 2 includes BWP1 and BWP3, and the preset threshold set by the CU entity is 3, so that the number of terminals under the current BWP1 is 2, and is still smaller than the preset threshold, and the CU entity does not reconfigure the BWP configuration of the terminal.

After the terminal 3 accesses the network, the BWPs configured by the network side include BWP3 and BWP4, then the total number of terminals under BWP1 and BWP4 is already 3, and reaches a preset threshold, and the CU entity will reconfigure some or all terminals under BWP1 and BWP 4.

Specifically, the CU entity may send a first request message to the DU entity, requesting the DU entity to reconfigure some or all terminals under BWP1 and/or BWP4, for example, the CU entity may request the DU entity to delete BWP1 and/or BWP4 in the BWP configuration of BWP1 and/or some or all terminals under BWP4, so as to reduce the number of terminals under BWP of the first type. Alternatively, the CU entity may further send a second request message to the DU entity, requesting the DU entity to configure the common search space for acquiring the system information for BWP1 and/or BWP4, so that BWP1 and/or BWP4 become BWPs capable of acquiring the system information in a broadcast manner, and a terminal activating BWP as BWP1 or BWP4 may acquire the system information in a broadcast manner.

S403: the DU entity sends the reconfiguration message to the CU entity.

In this embodiment of the present invention, if the DU entity receives the second request message, the DU entity configures the common search space for acquiring system information for the specified BWP according to the indication of the second request message, for example, the second request message indicates that the DU entity configures the common search space for acquiring system information for BWP1 and BWP4, and then the DU entity configures the common search space for acquiring system information for BWP1 and BWP4, generates reconfiguration messages for all terminals configured with BWP1 and BWP4 or for the terminals specified in the second request message, and sends the reconfiguration message to the CU entity. The common search space may at least include a common search space for acquiring the SIB1, or may include a search space for acquiring other system information and a common search space for acquiring paging.

S404: the CU entity processes the reconfiguration message.

In the embodiment of the present invention, after receiving the reconfiguration message sent by the DU entity, the CU entity processes the reconfiguration message, such as encryption and security completion, and triggers a process of sending the reconfiguration message to the corresponding terminal.

In the embodiment of the present invention, the BWP management process may also be performed in the DU entity, please refer to fig. 5, which is a flowchart illustrating BWP management performed by the DU entity on a specific BWP.

S501: the DU entity determines whether the number of terminals configured with the first BWP is not less than a preset threshold value.

In this embodiment of the present invention, after setting the preset threshold, the DU entity may monitor the number of terminals configured with the first BWP, and determine whether the number of terminals configured with the first BWP is greater than or equal to the preset threshold.

S502: if the determination result in S501 is yes, the DU entity reconfigures a part or all of the terminals configured with the first BWP, or the DU entity configures a common search space for the first BWP.

In this embodiment of the present invention, if the DU entity determines that the number of terminals currently configured with the first BWP is greater than or equal to the preset threshold, more first signaling is required to notify the system information, which may increase overhead of an air interface and may cause scheduling congestion, and thus to avoid this, the DU entity may reconfigure such terminals, for example, the DU entity may delete the first BWP from the configuration of some or all terminals configured with the first BWP, so as to reduce the number of terminals configured with the first BWP.

In this embodiment of the present invention, the DU entity may also configure the common search space for the first BWP, so that the first BWP becomes the BWP capable of acquiring the system information in a broadcast manner, and it is not necessary to send the first signaling to the terminal configured with the BWP, so as to reduce overhead of the air interface and avoid scheduling congestion.

Illustratively, the communication system includes BWP1, BWP2, and BWP3, where BWP1 is not configured with the common search space for acquiring system information, and BWP2 and BWP3 are both configured with the common search space. The BWP configured for the terminal 1 includes BWP1 and BWP2, the BWP configured for the terminal 2 includes BWP1 and BWP3, and the preset threshold set by the DU or CU entity is 3, so that the number of terminals under the current BWP1 is 2, and is still smaller than the preset threshold, and the DU entity will not reconfigure the BWP configuration of the terminal.

After the terminal 3 accesses the network, the BWP configured by the network side includes BWP1 and BWP3, then the number of terminals under BWP1 is already 3, and reaches the preset threshold, and the DU entity will reconfigure part of or all terminals under BWP 1.

Specifically, the DU entity may reconfigure a part of terminals or all terminals under BWP1, for example, the DU entity may delete the first BWP in the BWP configuration of the part of terminals or all terminals under BWP1, so as to reduce the number of terminals under BWP 1. Alternatively, the DU entity may also configure the common search space for acquiring the system information for BWP1, so that BWP1 becomes the BWP capable of acquiring the system information in a broadcast manner, and a terminal activating BWP to BWP1 can acquire the system information in a broadcast manner.

S503: the DU entity sends the reconfiguration message to the CU entity.

In this embodiment of the present invention, after the DU entity reconfigures some or all terminals configured with the first BWP, for example, after the DU entity deletes and releases BWP1 in the BWP configuration of terminal 1, a reconfiguration message is generated, and the reconfiguration message is sent to the CU entity.

In this embodiment of the present invention, after the DU entity configures a common search space for acquiring system information for the first BWP, for example, after the DU entity configures a common search space for acquiring system information for BWP1, a reconfiguration message is generated for all or part of terminals configured with BWP1, and the reconfiguration message is sent to the CU entity. The common search space may be a common search space including at least the acquisition SIB1, or may include a search space for acquiring other system information and a common search space for acquiring paging.

S504: the CU entity processes the reconfiguration message.

In the embodiment of the present invention, after receiving the reconfiguration message sent by the DU entity, the CU entity processes the reconfiguration message, such as encryption and security completion, and triggers the process of sending the reconfiguration message to the corresponding terminal.

Please refer to fig. 6, which is a flowchart illustrating BWP management performed by a DU entity for a first type BWP in a cell.

S601: the DU entity determines whether the number of terminals configured with the BWP of the first type is not less than a preset threshold value.

In this embodiment of the present invention, after setting the preset threshold, the DU entity may monitor the number of terminals configured with the first type of BWP, and determine whether the number of terminals configured with the first type of BWP is greater than or equal to the preset threshold.

S602: if the determination result in S601 is yes, the DU entity reconfigures a part or all of the terminals configured with the BWP of the first type, or the DU entity configures a common search space for the BWP of the first type.

In this embodiment of the present invention, if the DU entity determines that the number of terminals currently configured with the first-type BWP is greater than or equal to the preset threshold, more first signaling is required to notify the system information, which may increase the overhead of the air interface and cause scheduling congestion, and thus to avoid this, the DU entity may reconfigure such terminals, for example, the DU entity may delete the first-type BWP from the configuration of some or all terminals configured with the first-type BWP, so as to reduce the number of terminals configured with the first-type BWP.

In this embodiment of the present invention, the DU entity may also configure, for the specified or all BWPs of the first type, the common search space required for acquiring the system information in a broadcast manner, so that the specified or all BWPs of the first type become the BWPs that can acquire the system information in a broadcast manner, and it is not necessary to send a first signaling to the terminal configured with the BWP, so as to reduce overhead of an air interface and avoid scheduling congestion.

Illustratively, the communication system includes BWP1, BWP2, BWP3 and BWP4, wherein BWP1 and BWP4 do not configure a common search space for acquiring system information by broadcast, and BWP2 and BWP3 both configure the common search space. The BWP configured for the terminal 1 includes BWP1 and BWP2, the BWP configured for the terminal 2 includes BWP1 and BWP3, and the preset threshold set by the CU or DU entity is 3, so that the number of terminals under the current BWP1 is 2, and is still smaller than the preset threshold, and the DU entity will not reconfigure the BWP configuration of the terminal.

After the terminal 3 accesses the network, the BWP configured by the network side includes BWP3 and BWP4, then the total number of terminals under BWP1 and BWP4 is already 3, and reaches the preset threshold, and then the DU entity will reconfigure some or all terminals under BWP1 and/or BWP 4.

Specifically, the DU entity may reconfigure a part of terminals or all terminals under BWP1 and/or BWP4, for example, the DU entity may delete the BWP of the first type in the BWP configuration of BWP1 and/or BWP4, so as to reduce the total number of terminals under BWP1 and BWP 4. Alternatively, the DU entity may also configure a common search space for acquiring system information by broadcast for BWP1 and/or BWP4, so that BWP1 and/or BWP4 become BWPs capable of acquiring system information by broadcast, and a terminal activating BWP as BWP1 or BWP4 may acquire system information by broadcast.

S603: the DU entity sends the reconfiguration message to the CU entity.

In this embodiment of the present invention, after the DU entity reconfigures some or all terminals configured with the first type of BWP, for example, after the DU entity deletes and releases BWP1 in the BWP configuration of terminal 1, a reconfiguration message is generated and sent to the CU entity.

In this embodiment of the present invention, after configuring the common search space for acquiring the system information for the first type BWP by the DU entity, for example, after configuring the common search space for acquiring the system information for BWP1 and/or BWP4 by the DU entity, a reconfiguration message is generated for all or part of the terminals configured with BWP1 and/or BWP4, and the reconfiguration message is sent to the CU entity. The common search space may at least include a common search space for acquiring the SIB1, or may include a search space for acquiring other system information and a common search space for acquiring paging.

S604: the CU entity processes the reconfiguration message.

In the embodiment of the present invention, the BWP management method may also be applicable to a non-CU-DU scene, and only the DU entity needs to be changed to a network-side entity in the non-CU-DU scene, so that for BWP management in the non-CU-DU scene, the process of performing BWP management may refer to the DU entity, and details thereof are not repeated herein.

Referring to fig. 7, based on the same inventive concept, an embodiment of the present invention provides a CU entity of a radio access network, a memory 701, a processor 702, and a transceiver 703. The memory 701 and the transceiver 703 may be connected to the processor 702 through a bus interface (as shown in fig. 7 for example), or may be connected to the processor 702 through a dedicated connection line.

Memory 701 may be used to store programs, among other things. A transceiver for transceiving data under control of the processor. The processor 702 may be configured to read the program in the memory 701 and execute the following processes:

generating a first signaling carrying system information for a terminal configured with a first type of partial bandwidth BWP, wherein the first type of BWP is a BWP which is not configured with a common search space required for acquiring the system information in a broadcast mode;

the first signaling is sent to a distribution node, DU, entity of the radio access network via the transceiver 703 to send the first signaling to the terminal via the DU entity.

Optionally, the processor 702 is specifically configured to:

sending a first signaling to a DU entity by using a first interface message between an existing CU entity and the DU entity through a transceiver 703, where the first interface message carries flag information indicating that the first signaling carries system information; alternatively, the first and second electrodes may be,

the first signaling is sent to the DU entity by the transceiver 703 using a second interface message between the newly defined CU entity and the DU entity, the second interface message being a dedicated interface message for sending the first signaling.

Optionally, the processor 702 is further configured to:

receiving a first response message sent by a DU entity through the transceiver 703, where the first response message is used to instruct a terminal to acquire system information in a broadcast manner; alternatively, the first and second electrodes may be,

receiving, by the transceiver 703, a second response message sent by the terminal through the DU entity, where the second response message is used to indicate that the terminal has received the first signaling; alternatively, the first and second electrodes may be,

a third response message sent by the DU entity is received by the transceiver 703, where the third response message is used to indicate the terminal that has successfully received the signaling and/or the terminal that has determined by the DU entity to abandon sending the first signaling.

Optionally, the processor 702 is further configured to:

if the determination result is yes, sending a first request message to the DU entity through the transceiver 703, where the first request message is used to request the DU entity to delete the first BWP from the configuration of part or all of the terminals configured with the first BWP; alternatively, a second request message is sent to the DU entity via the transceiver 703, where the second request message is used to request the DU entity to configure the common search space for the first BWP.

Optionally, the processor 702 is further configured to:

determining whether the number of terminals configured with the first type of BWP is not less than a preset threshold;

if the determination result is yes, sending a first request message to the DU entity through the transceiver 703, where the first request message is used to request the DU entity to delete the BWP of the first type from the configuration of part or all of the terminals configured with the BWP of the first type; alternatively, a second request message is sent to the DU entity through the transceiver 703, where the second request message is used to request the DU entity to configure a common search space for part or all BWPs in the first type of BWP.

Optionally, the processor 702 is specifically configured to:

sending, by the transceiver 703, a first request message to the DU entity by using a first interface message between the existing CU entity and the DU entity, where the first interface message carries indication information indicating that the first interface message is used to request deletion of a specified BWP or a first type of BWP from the configuration of the terminal; alternatively, the first and second electrodes may be,

the first request message is sent to the DU entity by the transceiver 703 with a third interface message between the newly defined CU entity and the DU entity, which is a dedicated interface message for requesting deletion of the specified BWP or the first type BWP from the configuration of the terminal.

flag information of the terminal;

flag information of BWP;

indication information indicating an operation mode; the operation modes include a mode of deleting a designated terminal or all terminals under a designated BWP, and a mode of deleting all terminals or designated terminals under all BWPs of the first type.

Optionally, the processor 702 is specifically configured to:

sending a second request message to the DU entity by using a first interface message between the existing CU entity and the DU entity through the transceiver 703, where the first interface message carries indication information indicating that the first interface message is used for requesting configuration of a common search space; alternatively, the first and second electrodes may be,

the second request message is sent to the DU entity by the transceiver 703 with a fourth interface message between the newly defined CU entity and the DU entity, which is a dedicated interface message for requesting configuration of the common search space.

flag information of BWP;

flag information characterizing a type of the common search space;

flag information of the terminal;

and indication information indicating a configuration manner including a manner of configuring the common search space for a specific BWP and a manner of configuring the common search space for all the first type BWPs.

Wherein in fig. 7, the bus architecture may include any number of interconnected buses and bridges, with one or more processors, represented by processor 702, and various circuits, represented by memory 701, being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 703 may be a number of elements, including a transmitter and a transceiver, providing a means for communicating with various other apparatus over a transmission medium. The processor 702 is responsible for managing the bus architecture and general processing, and the memory 701 may store data used by the processor 702 in performing operations.

Referring to fig. 8, based on the same inventive concept, an embodiment of the present invention provides a DU entity of a radio access network, a memory 801, a processor 802, and a transceiver 803. The memory 801 and the transceiver 803 may be connected to the processor 802 through a bus interface (fig. 8 is taken as an example), or may be connected to the processor 802 through a dedicated connection line.

The memory 801 may be used to store programs, among other things. A transceiver for transceiving data under control of the processor. The processor 802 may be configured to read a program in the memory 801 to perform the following processes:

receiving, by the transceiver 803, a first signaling carrying system information, which is sent by a CU entity of a radio access network, where the first signaling is used to notify a terminal configured with a first type of BWP, where the first type of BWP is a BWP not configured with a common search space required for acquiring the system information in a broadcast manner;

sending the first signaling to the terminal through the transceiver 803, so that the terminal acquires the system information from the first signaling;

a transceiver 803 for transceiving data under the control of the processor 802.

Optionally, the processor 802 is specifically configured to:

determining whether a common search space is configured for a BWP currently activated by the terminal;

Optionally, the processor 802 is further configured to:

sending a first response message to the CU entity through the transceiver 803, where the first response message is used to indicate that the terminal can acquire system information in a broadcast manner; alternatively, the first and second electrodes may be,

after receiving a second response message sent by the terminal through the transceiver 803, forwarding the second response message to the CU entity, where the second response message is used to represent that the terminal has received the first signaling; alternatively, the first and second electrodes may be,

a third response message is sent to the CU entity via the transceiver 803 indicating the terminal that has successfully received the signaling and/or the terminal that has dropped sending the first signaling.

Optionally, the processor 802 is further configured to:

receiving, by the transceiver 803, a first request message sent by the CU entity, where the first request message is used to request that the first BWP be deleted from the configuration of some or all terminals to which the first BWP has been configured, where the first BWP is one of the first type BWPs, or the first request message is used to request that the first type BWP be deleted from the configuration of some or all terminals to which the first type BWP has been configured;

flag information of the terminal;

flag information of BWP;

Optionally, the processor 802 is further configured to:

receiving, by the transceiver 803, a second request message sent by the CU entity, where the second request message is used to request configuration of a common search space for a first BWP, where the first BWP is one of the BWPs of the first type, or the second request message is used to request configuration of a common search space for part or all of the BWPs of the first type;

the common search space is configured for a specified BWP based on the second request message.

flag information of BWP;

flag information characterizing a type of the common search space;

flag information of the terminal;

Optionally, the processor 802 is further configured to:

if the result of the determination is positive, deleting the first BWP from the configuration of part or all terminals configured with the first BWP; alternatively, a common search space is configured for the first BWP.

Optionally, the processor 802 is further configured to:

if so, deleting the BWP of the first type from the configuration of part or all terminals configured with the BWP of the first type; alternatively, a common search space is configured for some or all BWPs in the first type of BWP.

Referring to fig. 9, based on the same inventive concept, an embodiment of the present invention provides a CU entity of a radio access network, including:

a generating unit 901, configured to generate a first signaling carrying system information for a terminal configured with a first type of partial bandwidth BWP, where the first type of BWP is a BWP not configured with a common search space required for acquiring system information in a broadcast manner;

a transceiving unit 902, configured to send the first signaling to a distribution node, DU, entity of the radio access network, so as to send the first signaling to the terminal through the DU entity.

Optionally, the transceiver 902 is specifically configured to:

sending a first signaling to a DU entity by using a first interface message between the existing CU entity and the DU entity, wherein the first interface message carries mark information for indicating that the first signaling carries system information; alternatively, the first and second electrodes may be,

and sending the first signaling to the DU entity by utilizing a second interface message between the newly defined CU entity and the DU entity, wherein the second interface message is a special interface message for sending the first signaling.

Optionally, the transceiver 902 is further configured to:

receiving a first response message sent by a DU entity, wherein the first response message is used for indicating a terminal to acquire system information in a broadcasting mode; alternatively, the first and second electrodes may be,

Optionally, the CU entity further includes a first determining unit 903;

a first determining unit 903, configured to determine whether the number of terminals configuring the first BWP is not less than a preset threshold, where the first BWP is one of the first type BWPs;

if the determination result is yes, the transceiving unit 902 is further configured to send a first request message to the DU entity, where the first request message is used to request the DU entity to delete the first BWP from the configuration of part or all of the terminals configured with the first BWP; or, the transceiving unit 902 is further configured to send a second request message to the DU entity, where the second request message is used to request the DU entity to configure the common search space for the first BWP.

Optionally, the CU entity further includes a second determining unit 904;

a second determining unit 904 for determining whether the number of terminals configuring the first type of BWP is not less than a preset threshold value;

if the determination result is yes, the transceiving unit 902 is further configured to send a first request message to the DU entity, where the first request message is used to request the DU entity to delete the BWP of the first type from the configuration of part or all of the terminals configured with the BWP of the first type; or, the transceiving unit 902 is further configured to send a second request message to the DU entity, where the second request message is used to request the DU entity to configure the common search space for part or all BWPs in the first type of BWP.

Optionally, the transceiver 902 is specifically configured to:

sending a first request message to a DU entity by using a first interface message between an existing CU entity and the DU entity, wherein the first interface message carries indication information indicating that the first interface message is used for requesting to delete the specified BWP or the first type of BWP from the configuration of the terminal; alternatively, the first and second electrodes may be,

the first request message is sent to the DU entity using a third interface message between the newly defined CU entity and the DU entity, the third interface message being a dedicated interface message for requesting deletion of the specified BWP or the first type of BWP from the configuration of the terminal.

flag information of the terminal;

flag information of BWP;

Optionally, the transceiver 902 is specifically configured to:

sending a second request message to a DU entity by using a first interface message between the existing CU entity and the DU entity, wherein the first interface message carries indication information indicating that the first interface message is used for requesting to configure a public search space; alternatively, the first and second electrodes may be,

and sending the second request message to the DU entity by using a fourth interface message between the newly defined CU entity and the DU entity, wherein the fourth interface message is a special interface message for requesting to configure the public search space.

flag information of BWP;

flag information characterizing a type of the common search space;

flag information of the terminal;

The device may be configured to perform the steps on the CU side in the method provided in the embodiments shown in fig. 1 to 6, and therefore, for functions and the like that can be realized by each functional module of the device, reference may be made to the description of the embodiments shown in fig. 1 to 6, which is not repeated here. Although fig. 9 shows the first determination unit 903 and the second determination unit 904 together, they are not essential functional blocks and are shown by broken lines.

Referring to fig. 10, based on the same inventive concept, an embodiment of the present invention provides a DU entity of a radio access network,

a transceiving unit 1001, configured to receive a first signaling carrying system information, sent by a CU entity of the radio access network, where the first signaling is used to notify a terminal configured with a first type of BWP, where the first type of BWP is a BWP where a common search space required for acquiring system information in a broadcast manner is not configured;

the transceiving unit 1001 is further configured to send the first signaling to the terminal, so that the terminal acquires the system information from the first signaling.

Optionally, the DU entity further includes a first determining unit 1002;

the first determining unit 1002, configured to determine whether the common search space is configured by BWP currently activated by the terminal; and if the result of the determination is positive, determining to abandon the first signaling and abandon the sending of the first signaling, otherwise, determining to send the first signaling to the terminal.

Optionally, the transceiver 1001 is further configured to:

flag information of the terminal;

flag information of BWP;

Optionally, the transceiver 1001 is further configured to:

flag information of BWP;

flag information characterizing a type of the common search space;

flag information of the terminal;

Optionally, the DU entity further includes a second determining unit 1003 and a first configuration unit 1004;

the second determining unit 1003 is configured to determine whether the number of terminals configured with a first BWP is not less than a preset threshold, where the first BWP is one of the first type BWPs;

if the determination result is yes, the first configuring unit 1004 is configured to delete the first BWP from the configuration of the part or all of the terminals configured with the first BWP; alternatively, the first configuration unit 1004 is configured to configure the common search space for the first BWP.

Optionally, the DU entity further includes a third determining unit 1005 and a second configuring unit 1006;

the third determining unit 1005 is configured to determine whether the number of terminals configuring the first type of BWP is not less than the preset threshold value;

if the determination result is yes, the second configuring unit 1006 is configured to delete the BWP of the first type from the configuration of some or all terminals configured with the BWP of the first type; or, the second configuring unit 1006 is configured to configure the common search space for part or all BWPs in the first type of BWP.

The DU entity may be configured to execute the steps on the DU side in the method provided in the embodiments shown in fig. 1 to 6, and therefore, for functions and the like that can be implemented by each functional module of the device, reference may be made to the description of the embodiments shown in fig. 1 to 6, which is not repeated herein. Although the first determination unit 1002, the second determination unit 1003, the first configuration unit 1004, the third determination unit 1005, and the second configuration unit 1006 are collectively shown in fig. 10, they are not essential functional blocks and are shown by broken lines.

Based on the same inventive concept, the embodiment of the present invention provides a computer storage medium storing computer instructions, which, when run on a computer, cause the computer to perform the method provided by the embodiment shown in fig. 1 to 6.

In particular implementations, the computer-readable storage medium includes: various storage media capable of storing program codes, such as a Universal Serial Bus flash drive (USB), a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, and an optical disk.

In the embodiments of the present invention, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described embodiments of the apparatus are merely illustrative, and for example, the described unit or division of units is only one division of logical functions, and there may be other divisions when actually implemented, for example, a plurality of units or components may be combined or may be integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical or other form.

The functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may be an independent physical module.

The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, all or part of the technical solutions of the embodiments of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device, such as a personal computer, a server, or a network device, or a processor (processor) to execute all or part of the steps of the methods according to the embodiments of the present invention. And the aforementioned storage medium includes: various media that can store program codes, such as a universal serial bus flash drive (usb flash drive), a removable hard disk, a ROM, a RAM, a magnetic disk, or an optical disk.

The above embodiments are only used to describe the technical solutions of the present application in detail, but the above embodiments are only used to help understanding the method of the embodiments of the present invention, and should not be construed as limiting the embodiments of the present invention. Variations or substitutions that may be readily apparent to one skilled in the art are intended to be included within the scope of the embodiments of the present invention.

Claims

1. A method for transmitting system information, comprising:

a central node CU entity of a wireless access network generates a first signaling carrying system information for a terminal configured with a first type of partial bandwidth BWP, wherein the first type of BWP is a BWP which is not configured with a common search space required for acquiring the system information in a broadcast mode;

and the CU entity sends the first signaling to a distribution node (DU) entity of the wireless access network so as to send the first signaling to the terminal through the DU entity.

2. The method of claim 1, wherein the CU entity sending the first signaling to the DU entity of the radio access network comprises:

the CU entity sends the first signaling to the DU entity by utilizing a first interface message between the CU entity and the DU entity, wherein the first interface message carries mark information used for indicating that the first signaling carries the system information; alternatively, the first and second electrodes may be,

3. The method of claim 1, wherein after the CU entity sends the first signaling to the DU entity of the radio access network, the method further comprises:

4. The method of claim 1, wherein the method further comprises:

5. The method of claim 1, wherein the method further comprises:

6. The method according to claim 4 or 5, wherein the CU entity sends a first request message to the DU entity, comprising:

7. The method of claim 4 or 5, wherein the first request message carries at least one of the following information:

flag information of the terminal;

flag information of BWP;

8. The method according to claim 4 or 5, wherein the CU entity sends a second request message to the DU entity, comprising:

9. The method of claim 4 or 5, wherein the second request message carries at least one of the following information:

flag information of BWP;

flag information characterizing a type of the common search space;

flag information of the terminal;

10. A method for transmitting system information, comprising:

11. The method of claim 10,

the DU entity determining whether the common search space is configured by BWP currently activated by the terminal;

12. The method of claim 10, wherein after the DU entity receives the first signaling carrying system information sent by the CU entity, the method further comprises:

13. The method of claim 10, wherein the method further comprises:

14. The method of claim 13, wherein the first request message carries at least one of the following information:

flag information of the terminal;

flag information of BWP;

15. The method of claim 10, wherein the method further comprises:

the DU entity receives a second request message sent by the CU entity, where the second request message is used to request configuration of the common search space for a first BWP, where the first BWP is one of the BWPs of the first type, or the second request message is used to request configuration of the common search space for part or all of the BWPs of the first type;

16. The method of claim 15, wherein the second request message carries at least one of the following information:

flag information of BWP;

flag information characterizing a type of the common search space;

flag information of the terminal;

17. The method of claim 10, wherein the method further comprises:

18. The method of claim 10, further comprising

19. A CU entity of a radio access network, comprising:

a memory to store instructions;

20. The CU entity of claim 19, wherein the processor is further configured to:

sending the first signaling to the DU entity by using a first interface message between the transceiver and the DU entity, wherein the first interface message carries flag information for indicating that the first signaling carries the system information; alternatively, the first and second electrodes may be,

and sending the first signaling to the DU entity by using a second interface message newly defined between the transceiver and the DU entity, wherein the second interface message is a special interface message for sending the first signaling.

21. The CU entity of claim 19, wherein the processor is further configured to:

22. The CU entity of claim 19, wherein the processor is further configured to:

23. The CU entity of claim 19, wherein the processor is further configured to:

24. The CU entity of claim 22 or 23, wherein the processor is further configured to:

25. The CU entity of claim 22 or 23, wherein the first request message carries at least one of the following information:

flag information of the terminal;

flag information of BWP;

26. The CU entity of claim 22 or 23, wherein the processor is further configured to:

27. The CU entity of claim 22 or 23, wherein the second request message carries at least one of the following information:

flag information of BWP;

flag information characterizing a type of the common search space;

flag information of the terminal;

28. A DU entity of a radio access network, comprising:

a memory to store instructions;

receiving, by a transceiver, first signaling carrying system information sent by a CU entity of the radio access network, where the first signaling is used to notify a terminal configured with a first type of BWP of the system information, where the first type of BWP is a BWP not configured with a common search space required for acquiring the system information in a broadcast manner;

29. The DU entity of claim 28, wherein the processor is specifically configured to:

and if the result is yes, abandoning the first signaling, and abandoning the sending of the first signaling, otherwise, the DU entity determines to send the first signaling to the terminal.

30. The DU entity of claim 28, wherein the processor is further configured to:

31. The DU entity of claim 28, wherein the processor is further configured to:

32. The DU entity of claim 31, wherein the first request message carries at least one of the following information:

flag information of the terminal;

flag information of BWP;

33. The DU entity of claim 28, wherein the processor is further configured to:

34. The DU entity of claim 33, wherein the second request message carries at least one of the following information:

flag information of BWP;

flag information characterizing a type of the common search space;

flag information of the terminal;

35. The DU entity of claim 28, wherein the processor is further configured to:

36. The DU entity of claim 28, wherein the processor is further configured to:

37. A CU entity of a radio access network, comprising:

38. A DU entity of a radio access network, comprising:

39. A computer storage medium, characterized in that:

the computer storage medium stores computer instructions that, when executed on a computer, cause the computer to perform the method of any of claims 1-9 or 10-18.