WO2022021308A1

WO2022021308A1 - Bandwidth check method and apparatus, computer device, and storage medium

Info

Publication number: WO2022021308A1
Application number: PCT/CN2020/106166
Authority: WO
Inventors: 李海涛; 胡奕
Original assignee: Oppo广东移动通信有限公司
Priority date: 2020-07-31
Filing date: 2020-07-31
Publication date: 2022-02-03
Also published as: CN115669180A

Abstract

The present application relates to the technical field of wireless communications, and discloses a bandwidth check method and apparatus, a computer device, and a storage medium. The method comprises: acquiring bandwidth parameters corresponding to N initial bandwidth parts, the bandwidth parameters being used for indicating bandwidths of the corresponding initial bandwidth parts, the N initial bandwidth parts belonging to one target cell, and N being an integer greater than or equal to 2; acquiring a target bandwidth parameter from among the bandwidth parameters corresponding to the N initial bandwidth parts; and performing a bandwidth check according to the target bandwidth parameter, the bandwidth check being used for determining a target cell admission state of the terminal device. The described solution achieves the bandwidth check for a cell where multiple initial bandwidth parts are defined, and expands the application scenarios of the bandwidth check.

Description

Bandwidth checking method, device, computer equipment and storage medium

technical field

The present application relates to the field of wireless communication technologies, and in particular, to a bandwidth checking method, apparatus, computer equipment and storage medium.

Background technique

In the 5th Generation Mobile Networks (5G) system, in order to reduce the power consumption of the terminal, the concept of Bandwidth Part (BWP) is introduced.

In the related art, the cell broadcasts the relevant configuration information of the initial BWP (initial BWP) used for access to the terminal through the system information, and the terminal initiates access to the cell according to the relevant configuration information of the initial BWP in the system information.

SUMMARY OF THE INVENTION

Embodiments of the present application provide a bandwidth checking method, apparatus, computer device, and storage medium. The technical solution is as follows:

On the one hand, an embodiment of the present application provides a bandwidth checking method, the method is executed by a terminal device, and the method includes:

Obtain bandwidth parameters corresponding to N initial bandwidth parts, where the bandwidth parameters are used to indicate the bandwidths of the corresponding initial bandwidth parts; the N initial bandwidth parts belong to a target cell; N is an integer greater than or equal to 2;

Obtain the target bandwidth parameter from the bandwidth parameters corresponding to the N initial bandwidth parts;

A bandwidth check is performed according to the target bandwidth parameter, and the bandwidth check is used to determine the target cell admission status of the terminal device.

In a possible implementation manner, the N initial bandwidth parts are in one-to-one correspondence with the N beams of the target cell.

In a possible implementation manner, the target cell is a cell of a non-terrestrial communication network NTN system, and the N beams are N satellite beams.

In a possible implementation manner, the bandwidth parameters corresponding to the N initial bandwidth parts include N bandwidth parameters, and the N bandwidth parameters are in one-to-one correspondence with the N initial bandwidth parts;

The terminal device is configured with indication information, where the indication information is used to instruct the terminal device to obtain one bandwidth parameter from the N bandwidth parameters as the target bandwidth parameter.

In a possible implementation manner, the obtaining the target bandwidth parameter from the bandwidth parameters corresponding to the N initial bandwidth parts includes:

Among the N bandwidth parameters, the bandwidth parameter corresponding to the maximum bandwidth value is used as the target bandwidth parameter.

Among the N bandwidth parameters, the bandwidth parameter corresponding to the initial bandwidth part currently selected by the terminal device is used as the target bandwidth parameter.

In a possible implementation, the method further includes:

When the terminal device selects or reselects a new initial bandwidth part, the bandwidth parameter corresponding to the new initial bandwidth part is used as the new target bandwidth parameter;

A new said bandwidth check is performed according to the new said target bandwidth parameter.

In a possible implementation manner, the bandwidth parameters corresponding to the N initial bandwidth parts include a single bandwidth parameter, and the single bandwidth parameter uniformly corresponds to the N initial bandwidth parts;

The obtaining the target bandwidth parameter from the bandwidth parameters corresponding to the N initial bandwidth parts includes:

The single bandwidth parameter is used as the target bandwidth parameter.

In a possible implementation manner, the obtaining bandwidth parameters corresponding to the N initial bandwidth parts includes:

The bandwidth parameters corresponding to the N initial bandwidth parts are acquired from the system information block SIB1 in the system message.

In a possible implementation manner, the performing bandwidth check according to the target bandwidth parameter includes:

When the terminal device supports the bandwidth indicated by the target bandwidth parameter, determine that the terminal device passes the bandwidth check;

When the terminal device does not support the bandwidth indicated by the target bandwidth parameter, it is determined that the terminal device is prohibited from accessing the target cell.

In a possible implementation manner, the bandwidth parameter includes at least one of the bandwidth parameter of the corresponding initial downlink bandwidth part and the bandwidth parameter of the corresponding initial uplink bandwidth part.

On the other hand, an embodiment of the present application provides an apparatus for checking bandwidth. The apparatus is used in a terminal device, and the apparatus includes:

A bandwidth parameter acquisition module, configured to acquire bandwidth parameters corresponding to N initial bandwidth parts, where the bandwidth parameters are used to indicate the bandwidths of the corresponding initial bandwidth parts; the N initial bandwidth parts belong to a target cell; N is greater than or equal to an integer of 2;

a target parameter obtaining module, configured to obtain target bandwidth parameters from the bandwidth parameters corresponding to the N initial bandwidth parts;

A bandwidth check module, configured to perform a bandwidth check according to the target bandwidth parameter, where the bandwidth check is used to determine the target cell admission state of the terminal device.

The terminal device is configured with indication information, and the indication information is used to instruct the terminal device to obtain one bandwidth parameter from the N bandwidth parameters as the target bandwidth parameter.

In a possible implementation manner, the target parameter obtaining module is configured to use, among the N bandwidth parameters, a bandwidth parameter corresponding to a maximum bandwidth value as the target bandwidth parameter.

In a possible implementation manner, the target parameter acquisition module is configured to use, among the N bandwidth parameters, the bandwidth parameter corresponding to the initial bandwidth part currently selected by the terminal device as the target bandwidth parameter.

In one possible implementation,

The target parameter acquisition module is further configured to use the bandwidth parameter corresponding to the new initial bandwidth portion as the new target bandwidth parameter when the terminal device selects or reselects a new initial bandwidth portion;

The bandwidth checking module is further configured to perform a new bandwidth check according to the new target bandwidth parameter.

The target parameter obtaining module is configured to use the single bandwidth parameter as the target bandwidth parameter.

In a possible implementation manner, the bandwidth parameter obtaining module is configured to obtain the bandwidth parameters corresponding to the N initial bandwidth parts from the system information block SIB1 in the system message.

In a possible implementation manner, the bandwidth checking module is used to:

In another aspect, an embodiment of the present application provides a computer device, the computer device includes a processor, a memory, and a transceiver, the memory stores a computer program, and the computer program is configured to be executed by the processor to Implement the bandwidth checking method described above.

In another aspect, an embodiment of the present application further provides a computer-readable storage medium, where a computer program is stored in the storage medium, and the computer program is loaded and executed by a processor to implement the foregoing bandwidth checking method.

In another aspect, a computer program product or computer program is provided, the computer program product or computer program comprising computer instructions stored in a computer-readable storage medium. The processor of the computer device reads the computer instructions from the computer-readable storage medium, and the processor executes the computer instructions, so that the computer device executes the above-mentioned bandwidth checking method.

The technical solutions provided in the embodiments of the present application can bring the following beneficial effects:

In the case where a cell corresponds to multiple initial bandwidth parts, the cell configures the bandwidth parameters of the multiple initial bandwidth parts, and the terminal obtains the bandwidth parameters of the above-mentioned multiple initial bandwidth parts, and selects the target bandwidth parameters from them for subsequent bandwidth checking, thereby A bandwidth check is implemented for cells that define multiple initial bandwidth parts, and the application scenarios of the bandwidth check are expanded.

Description of drawings

In order to illustrate the technical solutions in the embodiments of the present application more clearly, the following briefly introduces the drawings that are used in the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can also be obtained from these drawings without creative effort.

1 is a schematic diagram of a network architecture of a communication system provided by an embodiment of the present application;

2 is a network architecture diagram of an NTN system provided by an embodiment of the present application;

3 is a flowchart of a bandwidth checking method provided by an embodiment of the present application;

4 is a flowchart of a bandwidth checking method provided by an embodiment of the present application;

Fig. 5 is a kind of target bandwidth parameter selection schematic diagram involved in the embodiment shown in Fig. 4;

6 is a schematic diagram of another target bandwidth parameter selection involved in the embodiment shown in FIG. 4;

Fig. 7 is another kind of target bandwidth parameter selection schematic diagram involved in the embodiment shown in Fig. 4;

FIG. 8 is a schematic diagram of another target bandwidth parameter selection involved in the embodiment shown in FIG. 4;

9 is a block diagram of a bandwidth checking apparatus provided by an embodiment of the present application;

FIG. 10 is a schematic structural diagram of a computer device provided by an embodiment of the present application.

detailed description

In order to make the objectives, technical solutions and advantages of the present application clearer, the embodiments of the present application will be further described in detail below with reference to the accompanying drawings.

The network architecture and service scenarios described in the embodiments of the present application are for the purpose of illustrating the technical solutions of the embodiments of the present application more clearly, and do not constitute a limitation on the technical solutions provided by the embodiments of the present application. The evolution of new business scenarios and the emergence of new business scenarios, the technical solutions provided in the embodiments of the present application are also applicable to similar technical problems.

Please refer to FIG. 1 , which shows a schematic diagram of a network architecture of a communication system provided by an embodiment of the present application. The network architecture may include: terminal 10 and base station 20 .

The number of terminals 10 is usually multiple, and one or more terminals 10 may be distributed in a cell managed by each base station 20 . The terminal 10 may include various handheld devices with wireless communication functions, vehicle-mounted devices, wearable devices, computing devices or other processing devices connected to the wireless modem, as well as various forms of user equipment (User Equipment, UE), mobile stations ( Mobile Station, MS), terminal device, etc. For convenience of description, in the embodiments of the present application, the devices mentioned above are collectively referred to as terminals.

The base station 20 is a device deployed in the access network to provide the terminal 10 with a wireless communication function. The base station 20 may include various forms of satellite base stations, macro base stations, micro base stations, relay stations, access points, and the like. In systems using different radio access technologies, the names of devices with base station functions may be different, for example, in 5G New Radio (NR) systems, they are called gNodeBs or gNBs. As communication technology evolves, the name "base station" may change. For convenience of description, in the embodiments of the present application, the above-mentioned apparatuses for providing wireless communication functions for the terminal 20 are collectively referred to as base stations.

Optionally, what is not shown in FIG. 1 is that the above network architecture also includes other network devices, such as: a central control node (Central Network Control, CNC), an access and mobility management function (Access and Mobility Management Function, AMF) ) device, session management function (Session Management Function, SMF) or user plane function (User Plane Function, UPF) device, etc.

The "5G NR system" in the embodiments of the present disclosure may also be referred to as a 5G system or an NR system, but those skilled in the art can understand its meaning. The technical solutions described in the embodiments of the present disclosure may be applicable to the 5G NR system, and may also be applicable to the subsequent evolution system of the 5G NR system.

Before introducing the solutions shown in the subsequent embodiments of the present application, several terms and concepts involved in the present application are first introduced.

1) 5G NR system

The 5G NR system is a new generation of wireless communication system based on the user's requirements for the rate, delay, high-speed mobility, and energy efficiency of wireless communication, as well as the diversity and complexity of wireless communication services in future life. The main application scenarios of the 5G system are: Enhanced Mobile Broadband (eMBB), Ultra-reliable and Low Latency Communications (URLLC), Massive Machine Type Communication (mMTC) ).

In the 5G network environment, in order to reduce air interface signaling and quickly restore wireless connections and data services, a new radio resource control (Radio Resource Control, RRC) state is defined, that is, the RRC inactive state (RRC_INACTIVE) state. The state is different from the RRC idle state (RRC_IDLE) and the RRC connected state (RRC_ACTIVE). The above three RRC states are as follows:

RRC_IDLE: Mobility is UE-based cell selection reselection, paging is initiated by CN, paging area is configured by CN, there is no UE AS context on the base station side, and there is no RRC connection between the UE and the base station.

RRC_CONNECTED: There is an RRC connection between the UE and the base station, and a UE AS context exists between the base station and the UE. The network side knows that the location of the UE is at the specific cell level. Mobility is the mobility controlled by the network side. Unicast data can be transmitted between the UE and the base station.

RRC_INACTIVE: Mobility is UE-based cell selection reselection, there is a connection between CN-NR, UE AS context exists on a base station, paging is triggered by Radio Access Network (RAN), RAN-based The paging area is managed by the RAN, and the network side knows the location of the UE based on the paging area level of the RAN.

2) Bandwidth Part (BWP)

The maximum channel bandwidth supported in the NR system can reach 400MHz. If the UE keeps working on the broadband carrier, the power consumption of the UE is very large. In order to be able to adjust the radio frequency (Radio Frequency, RF) bandwidth of the UE according to the actual throughput of the UE and to optimize the power consumption of the UE, a bandwidth part is introduced.

A terminal in a connected state has at most one active downlink BWP and one active uplink BWP at the same time. The network side can configure at most 4 uplink BWPs and at most 4 downlink BWPs for the terminal in the connected state. For a frequency division duplex system, there is no explicit association between the uplink BWPs and the downlink BWPs. For example, the network side can configure four uplink BWPs (for example, the index indices are 0, 1, 2, and 3) and four downlink BWPs (the indices are 0, 1, 2, and 3) for a terminal in the connected state. The activated UL BWP index can be 0, and the currently activated downlink BWP index can be 1; if the network side switches the downlink BWP to another BWP through downlink control information (Downlink Control Information, DCI), for example, from the currently activated DL BWP 1 Switch to DL BWP 2 and the UL BWP can remain the same.

The terminal in the idle state and the inactive state obtains the master information block (Master Information Block, MIB) and system information block of the residing cell through the cell-defined synchronization signal block (Cell Defining Synchronization Signal and Physical Broadcast Channel Block, CD-SSB). (System Information Block, SIB), such as SIB1 information. SIB1 indicates the relevant configuration information of the initial BWP used by the terminal for initial access, which includes the initial uplink BWP (initial Uplink BWP) and the initial downlink BWP (initial Downlink BWP). In the UL BWP configuration, the base station configures random access resources for the initial access terminal, and there is a corresponding relationship between random access resources and SSB. The network side controls the selection of UE random access resources by configuring a reference signal receiving power (Reference Signal Receiving Power, RSRP) threshold (RSRP-Threshold SSB). When the random access process is triggered, the UE selects an RSRP measurement value that satisfies the above RSRP After the threshold SSB, select the corresponding random access resource according to the corresponding relationship between the random access resource and the SSB to send the preamble sequence preamble (ie Msg1), and receive the random access response message sent by the base station on the selected SSB (ie Msg2) .

3) Non-terrestrial communication network (Non Terrestrial Network, NTN)

At present, relevant standard organizations are studying NTN technology, and NTN generally provides communication services to ground users by means of satellite communication. Compared with terrestrial cellular network communication, satellite communication has many unique advantages. First of all, satellite communication is not limited by the user's geographical area. For example, general terrestrial communication cannot cover areas such as oceans, mountains, deserts, etc. where communication equipment cannot be set up or cannot be covered due to sparse population. For satellite communication, due to a single Satellites can cover a large ground, and satellites can orbit around the earth, so theoretically every corner of the earth can be covered by satellite communications. Secondly, satellite communication has great social value. Satellite communications can be covered at low cost in remote mountainous areas and poor and backward countries or regions, so that people in these regions can enjoy advanced voice communication and mobile Internet technologies, which is conducive to narrowing the digital divide with developed regions and promoting development in these areas. Thirdly, the satellite communication distance is long, and the communication cost does not increase significantly when the communication distance increases; finally, the satellite communication has high stability and is not limited by natural disasters.

Communication satellites are classified into Low-Earth Orbit (LEO) satellites, Medium-Earth Orbit (MEO) satellites, Geostationary Earth Orbit (GEO) satellites, and highly elliptical orbits according to different orbital altitudes. (High Elliptical Orbit, HEO) satellites, etc. The main researched NTN technology at this stage is the communication technology based on LEO satellite and GEO satellite.

LEO satellites:

The altitude range of low-orbit satellites is 500km to 1500km, and the corresponding orbital period is about 1.5 hours to 2 hours. The signal propagation delay of single-hop communication between users is generally less than 20ms. The maximum satellite viewing time is 20 minutes. The signal propagation distance is short, the link loss is small, and the transmit power requirements of the user terminal are not high.

GEO Satellite:

A satellite in geosynchronous orbit with an orbital altitude of 35,786km and a 24-hour rotation period around the earth. The signal propagation delay of single-hop communication between users is generally 250ms.

In order to ensure the coverage of satellites and improve the system capacity of the entire satellite communication system, satellites use multiple beams to cover the ground. A satellite can form dozens or even hundreds of beams to cover the ground; a satellite beam can cover tens to hundreds of kilometers in diameter. ground area.

Satellite beam:

A satellite beam is the smallest unit that a satellite covers the earth's surface, corresponding to different directions. Usually, a satellite covers the earth's surface through hundreds or thousands of satellite beams. These satellite beams can be deployed as different cells or within the same cell. Considering the possible co-channel interference between adjacent satellite beams, a frequency reuse factor greater than 1 is generally considered, that is, adjacent satellite beams are distinguished by different frequency points/carriers/frequency bands.

Taking the above-mentioned base station 20 in the system shown in FIG. 1 as an example of a satellite base station implemented based on a communication satellite, please refer to FIG. 2 , which shows a network architecture diagram of an NTN system provided by an embodiment of the present application. As shown in FIG. 2 , the NTN system includes a terminal 201 , a satellite base station 202 , and a gateway device 203 . The satellite base station 202 and the gateway device 203 are wirelessly connected, and the gateway device 203 is connected to the data network. The satellite base station 202 covers the earth's surface through a plurality of satellite beams 202a, and each beam covers a certain range area. When the terminal 201 is within the coverage of a satellite beam 202a, it can initiate random access and communication with the base station 202.

In the discussion of 5G standards, different frequency points/carriers/bands are used for adjacent satellite beams. One method is to configure different BWPs in the same cell for different satellite beams, so that when the terminal moves between satellite beams , it does not need to do cell handover, but only needs to do intra-cell BWP handover. Correspondingly, for a terminal in a disconnected state, it is necessary to configure multiple different initial BWPs for multiple different satellite beams.

In the current 5G system, each cell has only one initial BWP. The terminal reads SIB1 through the information indicated by the MIB, obtains the bandwidth parameters of the initial BWP in SIB1, and checks the bandwidth according to the bandwidth parameters of the initial BWP. Determine if access to the cell is barred. However, for a cell that defines multiple initial BWPs, such as the above-mentioned NTN cell, there is currently no corresponding solution for bandwidth checking.

The solutions shown in the subsequent embodiments of the present application propose a bandwidth checking solution for a cell in which multiple initial BWPs are defined.

Please refer to FIG. 3 , which shows a flowchart of a method for checking bandwidth provided by an embodiment of the present application. The method may be executed by a terminal device, where the terminal device may be in the network architecture shown in FIG. 1 or FIG. 2 . terminal. The method may include the following steps:

Step 301: Obtain bandwidth parameters corresponding to N initial bandwidth parts, where the bandwidth parameters are used to indicate the bandwidths of the corresponding initial bandwidth parts; the N initial bandwidth parts belong to one target cell; N is an integer greater than or equal to 2.

In a possible implementation manner, the terminal acquires bandwidth parameters corresponding to the above N initial bandwidth parts from a system message.

In a possible implementation manner, the target cell corresponds to N beams, and each beam defines an initial BWP correspondingly.

The configuration information of the initial BWP of the target cell is broadcast by the target cell to terminals within the coverage of each beam of the target cell through a system message. In addition to configuring the initial BWP corresponding to each of the N beams, the system message also includes N The bandwidth parameter of the initial BWP corresponding to each beam.

Step 302: Obtain target bandwidth parameters from bandwidth parameters corresponding to the N initial bandwidth parts.

In the embodiment of the present application, for the case where the target cell defines corresponding initial BWPs for each beam, the terminal determines the target bandwidth parameter for subsequent bandwidth checking from the bandwidth parameters of the initial BWP corresponding to each beam.

In a possible implementation manner, the above-mentioned target bandwidth parameter is a certain bandwidth parameter among the bandwidth parameters of the initial BWP corresponding to each beam respectively.

Step 303: Perform a bandwidth check according to the target bandwidth parameter, where the bandwidth check is used to determine the target cell admission status of the terminal device.

In this embodiment of the present application, the above-mentioned target cell admission status may be used to indicate whether the terminal is prohibited from accessing the above-mentioned target cell.

To sum up, in the solutions shown in the embodiments of the present application, in the case where a cell corresponds to multiple initial bandwidth parts, the cell configures the bandwidth parameters of the multiple initial bandwidth parts, and the terminal obtains the bandwidths of the multiple initial bandwidth parts. parameters, and select target bandwidth parameters from them for subsequent bandwidth checking, thereby realizing bandwidth checking for cells that define multiple initial bandwidth parts, and expanding the application scenarios of bandwidth checking.

In the solution shown in FIG. 3 above, the target cell can configure different bandwidth parameters for multiple initial bandwidth parts, or the target cell can also configure the same or partially the same bandwidth parameters for multiple initial bandwidth parts. Depending on the configuration of the parameters, the corresponding bandwidth checking methods are also different. Subsequent embodiments of the present application will introduce bandwidth checking solutions under different bandwidth parameter configurations.

Please refer to FIG. 4 , which shows a flowchart of a bandwidth checking method provided by an embodiment of the present application. The method may be executed by a terminal device and a network side device, wherein the terminal device may be the one shown in FIG. 1 or FIG. 2 . The terminal in the network architecture shown in FIG. 1 or the network side device may be the base station/satellite base station in the network architecture shown in FIG. 1 or FIG. 2 . The method may include the following steps:

Step 401, the network side device configures N initial bandwidth parts of the target cell and bandwidth parameters of the N initial bandwidth parts.

The above N initial bandwidth parts belong to the target cell, and N is an integer greater than or equal to 2, that is, in the embodiment of the present application, a target cell defines multiple initial bandwidth parts.

The bandwidth parameter is used to indicate the bandwidth of the corresponding initial bandwidth part. For example, the bandwidth parameter includes the bandwidth size of the corresponding initial bandwidth part, or the bandwidth parameter includes the bandwidth index of the corresponding initial bandwidth part.

In a possible implementation manner, the above-mentioned bandwidth parameters include at least one of the bandwidth parameters of the corresponding initial downlink bandwidth part and the corresponding bandwidth parameters of the initial uplink bandwidth part.

In a possible implementation manner, the above-mentioned N initial bandwidth parts are in one-to-one correspondence with the N beams of the target cell.

In a possible implementation manner, the above-mentioned target cell is a cell of a non-terrestrial communication network NTN system, and the above-mentioned N beams are N satellite beams.

Among them, take the network side device as the satellite base station corresponding to the target cell as an example, the target cell corresponds to N satellite beams, the satellite base station configures an initial bandwidth part for the N satellite beams respectively, and the N satellite beams are one by one. The corresponding N initial bandwidth parts are configured with bandwidth parameters.

Step 402, the network side device sends a system message carrying the configuration information of the initial bandwidth part, and correspondingly, the terminal device receives the system message.

The above-mentioned initial bandwidth portion configuration information includes N initial bandwidth portions of the target cell and bandwidth parameters of the N initial bandwidth portions.

In a possible implementation manner, the network-side device may carry the above-mentioned initial bandwidth part configuration information through the system information block SIB1 in the system message, or the network-side device may also carry the above-mentioned initial bandwidth part through other system information blocks in the system message configuration information.

Taking the network side device as the satellite base station corresponding to the target cell as an example, the satellite base station broadcasts the above-mentioned initial bandwidth part configuration information to the ground area covered by the N satellite beams of the target cell through system messages.

In this embodiment of the present application, when the terminal device is within the coverage of the target cell, it can receive system messages from the network side device. For example, when the terminal device is in an idle state or an inactive state, the above-mentioned system messages can be monitored.

For example, taking the network side equipment as the satellite base station corresponding to the target cell as an example, when the terminal equipment is located in the ground area covered by N satellite beams of the target cell, if the terminal equipment is in an idle or inactive state, it can monitor the satellite base station. Broadcast system messages.

Step 403, the terminal device acquires bandwidth parameters corresponding to the N initial bandwidth parts.

In a possible implementation manner, the terminal device acquires the bandwidth parameters corresponding to the N initial bandwidth parts from the system information block SIB1 in the system message.

Taking the network side device carrying the above-mentioned initial bandwidth part configuration information through SIB1 as an example, when the terminal device monitors the system message, it reads SIB1 through CORESET#0 and search space#0 indicated in the MIB in the system message. When the SIB1 is received, multiple initial bandwidth parts and bandwidth parameters of the multiple initial bandwidth parts are acquired.

Depending on the number of bandwidth parameters corresponding to the N initial bandwidth parts, the terminal device may perform the subsequent step 404 or step 405 .

Step 404, when the bandwidth parameters corresponding to the N initial bandwidth parts include N bandwidth parameters, the terminal device acquires one bandwidth parameter from the N bandwidth parameters as the target bandwidth parameter.

Wherein, the terminal device is configured with indication information, and the indication information can be used to instruct the terminal device to obtain one bandwidth parameter from the N bandwidth parameters as the target bandwidth parameter.

In this embodiment of the present application, the above-mentioned indication information may be preset in the terminal device, or the above-mentioned indication information may also be configured by the network-side device to the terminal device through wireless signaling, for example, it may be configured by the network-side device through RRC Signaling or media access control layer (Media Access Control, MAC) control element (Control Element, CE) is configured to the terminal device.

In this embodiment of the present application, the above-mentioned N bandwidth parameters are in one-to-one correspondence with the above-mentioned N initial bandwidth parts.

In a possible implementation manner, each of the foregoing bandwidth parameters corresponds to at least one of the bandwidth parameters of the initial uplink bandwidth part and the bandwidth parameters of the initial downlink bandwidth part.

For example, taking the network side device as a satellite base station corresponding to a target cell as an example, the target cell corresponds to N satellite beams, and after the satellite base station configures an initial bandwidth portion for the N satellite beams, it also configures the corresponding satellite beams for each satellite beam. Configure the corresponding bandwidth parameters in the initial bandwidth section. Correspondingly, the system message will also indicate the bandwidth parameters of the respective initial bandwidth parts of the N satellite beams, and the terminal device can acquire the N bandwidth parameters according to the system message.

Since the above-mentioned N initial bandwidth parts correspond to one bandwidth parameter respectively, the bandwidth parameters of the above-mentioned N initial bandwidth parts are usually different from each other, or are partially the same. That is to say, the terminal equipment may support all bandwidth parameters, or may only support all bandwidth parameters. Some bandwidth parameters are supported, or none of them are supported. If a bandwidth check is performed for each bandwidth parameter, the bandwidth check delay will be too high, especially when the value of N is large (for example, When the target cell is a satellite base station, there may be many satellite beams, and correspondingly, there will be many initial bandwidth parts), which will cause the bandwidth check delay to be too high, and then cause the subsequent access delay to be too high. Therefore, in this embodiment of the present application, after obtaining the N bandwidth parameters corresponding to the N initial bandwidth parts, the terminal device obtains a bandwidth parameter that satisfies the bandwidth check requirement from the N bandwidth parameters as a target Bandwidth parameter to reduce the latency of bandwidth checking.

In a possible implementation manner, when the terminal device obtains one bandwidth parameter from the N bandwidth parameters as the target bandwidth parameter, according to the above indication information, the bandwidth parameter corresponding to the maximum bandwidth value among the N bandwidth parameters is used as the target bandwidth parameter Bandwidth parameter.

In the case where there are N bandwidth parameters, if the terminal device can pass the bandwidth check of the bandwidth parameter corresponding to the maximum bandwidth, the terminal device can also pass the bandwidth check of other bandwidth parameters with smaller bandwidths. In a possible solution, the terminal device selects the bandwidth parameter with the largest bandwidth as the target bandwidth parameter.

For example, please refer to FIG. 5 , which shows a schematic diagram of selecting a target bandwidth parameter involved in an embodiment of the present application. As shown in FIG. 5 , the target cell is configured with three initial bandwidth parts, which are the initial bandwidth part 51 , the initial bandwidth part 52 and the initial bandwidth part 53 , wherein the bandwidth parameter of the initial bandwidth part 51 is BW1 , and the The bandwidth parameter is BW2, the bandwidth parameter of the initial bandwidth part 53 is BW3, and BW3 is the maximum value among the three bandwidth parameters, and the terminal device uses BW3 as the target bandwidth parameter.

In another possible implementation manner, when the terminal device obtains one bandwidth parameter from the N bandwidth parameters as the target bandwidth parameter, according to the above-mentioned indication information, among the N bandwidth parameters, the initial bandwidth part currently selected by the terminal device The corresponding bandwidth parameter is used as the target bandwidth parameter.

In the case where there are N initial bandwidth parts, the terminal device may select different initial bandwidth parts in different time periods. When the terminal device needs to access the cell, it can initiate random access based on the currently selected initial bandwidth part, and the corresponding , the terminal device only needs to initiate a bandwidth check on the currently selected initial bandwidth part. Therefore, in this embodiment of the present application, the terminal device takes the bandwidth parameter corresponding to the currently selected initial bandwidth part as the target bandwidth parameter.

For example, please refer to FIG. 6 , which shows a schematic diagram of another target bandwidth parameter selection involved in the embodiment of the present application. As shown in FIG. 6, the target cell is configured with three initial bandwidth parts, namely initial bandwidth part 61, initial bandwidth part 62 and initial bandwidth part 63, and the bandwidth parameters of the three initial bandwidth parts are BW1, BW2, and BW3, respectively. At time T1, the initial bandwidth part selected by the terminal device is the initial bandwidth part 62, and the terminal device takes BW2 as the target bandwidth parameter.

In a possible implementation manner, when the terminal device selects or reselects a new initial bandwidth part, the bandwidth parameter corresponding to the new initial bandwidth part is used as the new target bandwidth parameter.

In the case where there are N initial bandwidth parts, the terminal device may select or reselect the initial bandwidth part, so that the currently selected initial bandwidth part changes, and the bandwidth parameters of the newly selected initial bandwidth part are the same as those of the previous initial bandwidth part. The bandwidth parameters are different. Therefore, after the terminal device selects a new initial bandwidth part, it also needs to reselect a new target bandwidth parameter.

For example, please refer to FIG. 7 , which shows a schematic diagram of another target bandwidth parameter selection involved in an embodiment of the present application. As shown in Figure 7, the target cell is configured with 3 initial bandwidth parts, namely initial bandwidth part 71, initial bandwidth part 72 and initial bandwidth part 73, and the bandwidth parameters of the three initial bandwidth parts are BW1, BW2, and BW3 respectively; At time T1, the initial bandwidth part selected by the terminal device is the initial bandwidth part 72, and BW2 is used as the target bandwidth parameter; at time T2, the terminal device reselects the initial bandwidth part, and the reselected initial bandwidth part is the initial bandwidth part 73, then At time T2, the terminal device takes BW3 as a new target bandwidth parameter.

Step 405, when the bandwidth parameters corresponding to the N initial bandwidth parts include a single bandwidth parameter, the terminal device uses the single bandwidth parameter as a target bandwidth parameter.

Wherein, the above single bandwidth parameter is uniformly corresponding to the N initial bandwidth parts.

In this embodiment of the present application, the N initial bandwidth parts of the target cell may correspond to the same bandwidth parameter.

For example, taking the network side device as the satellite base station corresponding to the target cell as an example, the target cell corresponds to N satellite beams. The initial bandwidth section configures the same bandwidth parameters. Correspondingly, the bandwidth parameters of the respective initial bandwidth parts of the N satellite beams are indicated by a single bandwidth parameter in the system message, and the terminal device can obtain the single bandwidth parameter according to the system message, and directly use the single bandwidth parameter as the target bandwidth parameter. .

For example, please refer to FIG. 8 , which shows a schematic diagram of another target bandwidth parameter selection involved in an embodiment of the present application. As shown in Figure 8, the target cell is configured with 3 initial bandwidth parts, namely initial bandwidth part 81, initial bandwidth part 82 and initial bandwidth part 83, the bandwidth parameters of the three initial bandwidth parts are all BW1; as the target bandwidth parameter.

Step 406: Perform a bandwidth check according to the target bandwidth parameter, where the bandwidth check is used to determine the target cell admission status of the terminal device.

Wherein, the target cell admission status is used to indicate whether the terminal equipment is prohibited from accessing the target cell.

In a possible implementation manner, the process of performing the bandwidth check by the terminal device according to the target bandwidth parameter may be as follows:

When the terminal device supports the bandwidth indicated by the target bandwidth parameter, it is determined that the terminal device passes the bandwidth check, that is, the target cell admission status is: the terminal device passes the bandwidth check;

When the terminal device does not support the bandwidth indicated by the target bandwidth parameter, it is determined that the terminal device is prohibited from accessing the target cell, that is, the target cell admission status is: the terminal device is prohibited from accessing the target cell.

Wherein, when the above-mentioned bandwidth parameter includes the bandwidth parameter of the corresponding initial uplink bandwidth part, if the terminal device supports the bandwidth parameter of the initial uplink bandwidth part, it is determined that the terminal device passes the bandwidth check, otherwise it is determined that the terminal device is prohibited from accessing the target cell.

When the above bandwidth parameter includes the bandwidth parameter of the corresponding initial downlink bandwidth part, if the terminal device supports the bandwidth parameter of the initial downlink bandwidth part, it is determined that the terminal device passes the bandwidth check, otherwise it is determined that the terminal device is prohibited from accessing the target cell .

When the above bandwidth parameters include the bandwidth parameters of the corresponding initial uplink bandwidth part and the corresponding bandwidth parameters of the initial downlink bandwidth part, if the terminal device supports the bandwidth parameters of the initial uplink bandwidth part and the bandwidth of the initial downlink bandwidth part at the same time parameter, it is determined that the terminal device passes the bandwidth check, otherwise it is determined that the terminal device is prohibited from accessing the target cell.

In a possible implementation manner, after the terminal device selects a new initial bandwidth part and reselects a new target bandwidth parameter, a new bandwidth check is performed according to the new target bandwidth parameter.

Wherein, if the above-mentioned target bandwidth parameter is the bandwidth parameter corresponding to the initial bandwidth part currently selected by the terminal device, each time the terminal device selects a new initial bandwidth part, it also needs to re-execute the bandwidth check according to the bandwidth parameter of the new initial bandwidth part.

To sum up, in the solutions shown in the embodiments of the present application, in the case that a cell corresponds to multiple initial bandwidth parts, the cell carries the bandwidth parameters of the multiple initial bandwidth parts through system information, and the terminal obtains the bandwidth parameters from the system information. The bandwidth parameters of the above multiple initial bandwidth parts are selected, and the target bandwidth parameters are selected for subsequent bandwidth checking, so as to realize the bandwidth checking for the cell in which multiple initial bandwidth parts are defined, and expand the application scenarios of the bandwidth checking.

When the solutions shown in the above embodiments of the present application are applied to an NTN system, a bandwidth checking method under multiple initial BWP configurations in NTN can be provided. When multiple initial BWPs are configured with the same bandwidth, any bandwidth is selected for bandwidth checking Check, when multiple initial BWPs are individually configured with bandwidth, the maximum initial BWP bandwidth check is introduced, or the initial BWP selection is performed first and then the bandwidth of the selected initial BWP is checked, which can ensure that the UE can work normally on the selected cell and initial BWP. Avoid communication failures.

In addition to the above NTN system scenario, the solutions shown in the above embodiments of the present application can also be applied to any other communication scenario in which multiple initial BWPs are configured for a cell.

The following are apparatus embodiments of the present application, which can be used to execute the method embodiments of the present application. For details not disclosed in the device embodiments of the present application, please refer to the method embodiments of the present application.

Please refer to FIG. 9 , which shows a block diagram of a bandwidth checking apparatus provided by an embodiment of the present application. The device is used in a terminal device, and has the function of implementing the steps performed by the terminal device in the above bandwidth checking method. As shown in Figure 9, the apparatus may include:

A bandwidth parameter acquisition module 901, configured to acquire bandwidth parameters corresponding to N initial bandwidth parts, where the bandwidth parameters are used to indicate the bandwidth of the corresponding initial bandwidth parts; the N initial bandwidth parts belong to a target cell; N is greater than or an integer equal to 2;

A target parameter obtaining module 902, configured to obtain target bandwidth parameters from the bandwidth parameters corresponding to the N initial bandwidth parts;

A bandwidth checking module 903, configured to perform a bandwidth check according to the target bandwidth parameter, where the bandwidth check is used to determine the target cell admission state of the terminal device.

In a possible implementation manner, the target parameter obtaining module 902 is configured to use, among the N bandwidth parameters, a bandwidth parameter corresponding to a maximum bandwidth value as the target bandwidth parameter.

In a possible implementation manner, the target parameter obtaining module 902 is configured to use, among the N bandwidth parameters, the bandwidth parameter corresponding to the initial bandwidth part currently selected by the terminal device as the target bandwidth parameter.

In one possible implementation,

The target parameter obtaining module 902 is further configured to use the bandwidth parameter corresponding to the new initial bandwidth portion as the new target bandwidth parameter when the terminal device selects or reselects a new initial bandwidth portion;

The bandwidth checking module 903 is further configured to perform a new bandwidth check according to the new target bandwidth parameter.

The target parameter obtaining module 902 is configured to use the single bandwidth parameter as the target bandwidth parameter.

In a possible implementation manner, the bandwidth parameter obtaining module 901 is configured to obtain the bandwidth parameters corresponding to the N initial bandwidth parts from the system information block SIB1 in the system message.

In a possible implementation manner, the bandwidth checking module 903 is configured to:

It should be noted that, when the device provided in the above embodiment realizes its functions, only the division of the above functional modules is used as an example for illustration. In practical applications, the above functions can be allocated to different functional modules according to actual needs. That is, the content structure of the device is divided into different functional modules to complete all or part of the functions described above.

Regarding the apparatus in the above-mentioned embodiment, the specific manner in which each module performs operations has been described in detail in the embodiment of the method, and will not be described in detail here.

Please refer to FIG. 10 , which shows a schematic structural diagram of a computer device 1000 provided by an embodiment of the present application. The computer device 1000 may include: a processor 1001 , a receiver 1002 , a transmitter 1003 , a memory 1004 and a bus 1005 .

The processor 1001 includes one or more processing cores, and the processor 1001 executes various functional applications and information processing by running software programs and modules.

The receiver 1002 and the transmitter 1003 may be implemented as a communication component, which may be a communication chip. The communication chip may also be referred to as a transceiver.

The memory 1004 is connected to the processor 1001 through the bus 1005 .

The memory 1004 can be used to store a computer program, and the processor 1001 is used to execute the computer program, so as to implement various steps performed by the terminal device in the above method embodiments.

Additionally, memory 1004 may be implemented by any type or combination of volatile or non-volatile storage devices including, but not limited to, magnetic or optical disks, electrically erasable programmable Read Only Memory, Erasable Programmable Read Only Memory, Static Anytime Access Memory, Read Only Memory, Magnetic Memory, Flash Memory, Programmable Read Only Memory.

In an exemplary embodiment, the computer device includes a processor, a memory, and a transceiver (the transceiver may include a receiver for receiving information and a transmitter for transmitting information);

In a possible implementation manner, when the computer device is implemented as a terminal device,

The processor is configured to obtain bandwidth parameters corresponding to the N initial bandwidth parts, where the bandwidth parameters are used to indicate the bandwidths of the corresponding initial bandwidth parts; the N initial bandwidth parts belong to a target cell; N is greater than or equal to an integer of 2;

The processor is further configured to obtain a target bandwidth parameter from the bandwidth parameters corresponding to the N initial bandwidth parts;

The processor is further configured to perform a bandwidth check according to the target bandwidth parameter, where the bandwidth check is used to determine the target cell admission state of the terminal device.

In a possible implementation manner, the processor is configured to use, among the N bandwidth parameters, a bandwidth parameter corresponding to a maximum bandwidth value as the target bandwidth parameter.

In a possible implementation manner, the processor is configured to use, among the N bandwidth parameters, a bandwidth parameter corresponding to the initial bandwidth part currently selected by the terminal device as the target bandwidth parameter.

In one possible implementation,

The processor is further configured to use the bandwidth parameter corresponding to the new initial bandwidth portion as the new target bandwidth parameter when the terminal device selects or reselects a new initial bandwidth portion;

The processor is further configured to perform the new bandwidth check according to the new target bandwidth parameter.

The processor is configured to use the single bandwidth parameter as the target bandwidth parameter.

In a possible implementation manner, the processor is configured to acquire bandwidth parameters corresponding to the N initial bandwidth parts from the system information block SIB1 in the system message.

In a possible implementation manner, the processor is used for,

Embodiments of the present application further provide a computer-readable storage medium, where a computer program is stored in the storage medium, and the computer program is loaded and executed by a processor to implement the bandwidth checking method shown in FIG. 3 or FIG. 4 above. , the various steps performed by the terminal device.

The application also provides a computer program product or computer program, the computer program product or computer program comprising computer instructions stored in a computer-readable storage medium. The processor of the computer device reads the computer instruction from the computer-readable storage medium, and the processor executes the computer instruction, so that the computer device performs each step performed by the terminal device in the bandwidth checking method shown in 3 or FIG. 4 above.

Those skilled in the art should realize that, in one or more of the above examples, the functions described in the embodiments of the present application may be implemented by hardware, software, firmware, or any combination thereof. When implemented in software, the functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Computer-readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. A storage medium can be any available medium that can be accessed by a general purpose or special purpose computer.

The above are only exemplary embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application shall be included in the protection of the present application. within the range.

Claims

A method for checking bandwidth, characterized in that the method is executed by a terminal device, and the method includes:

Obtain bandwidth parameters corresponding to N initial bandwidth parts, where the bandwidth parameters are used to indicate the bandwidths of the corresponding initial bandwidth parts; the N initial bandwidth parts belong to a target cell; N is an integer greater than or equal to 2;

Obtain the target bandwidth parameter from the bandwidth parameters corresponding to the N initial bandwidth parts;

A bandwidth check is performed according to the target bandwidth parameter, and the bandwidth check is used to determine the target cell admission status of the terminal device.
The method according to claim 1, wherein the bandwidth parameters corresponding to the N initial bandwidth parts include N bandwidth parameters, and the N bandwidth parameters are in one-to-one correspondence with the N initial bandwidth parts;

The terminal device is configured with indication information, where the indication information is used to instruct the terminal device to obtain one bandwidth parameter from the N bandwidth parameters as the target bandwidth parameter.
The method according to claim 2, wherein the obtaining the target bandwidth parameter from the bandwidth parameters corresponding to the N initial bandwidth parts comprises:

Among the N bandwidth parameters, the bandwidth parameter corresponding to the maximum bandwidth value is used as the target bandwidth parameter.
The method according to claim 2, wherein the obtaining the target bandwidth parameter from the bandwidth parameters corresponding to the N initial bandwidth parts comprises:

Among the N bandwidth parameters, the bandwidth parameter corresponding to the initial bandwidth part currently selected by the terminal device is used as the target bandwidth parameter.
The method according to claim 4, wherein the method further comprises:

When the terminal device selects or reselects a new initial bandwidth part, the bandwidth parameter corresponding to the new initial bandwidth part is used as the new target bandwidth parameter;

A new said bandwidth check is performed according to the new said target bandwidth parameter.
The method according to claim 1, wherein the bandwidth parameters corresponding to the N initial bandwidth parts include a single bandwidth parameter, and the single bandwidth parameter is uniformly corresponding to the N initial bandwidth parts;

The obtaining the target bandwidth parameter from the bandwidth parameters corresponding to the N initial bandwidth parts includes:

The single bandwidth parameter is used as the target bandwidth parameter.
The method according to claim 1, is characterized in that, described obtaining bandwidth parameters corresponding to N initial bandwidth parts, comprising:

The bandwidth parameters corresponding to the N initial bandwidth parts are acquired from the system information block SIB1 in the system message.
The method according to claim 1, wherein the performing bandwidth check according to the target bandwidth parameter comprises:

When the terminal device supports the bandwidth indicated by the target bandwidth parameter, determine that the terminal device passes the bandwidth check;

When the terminal device does not support the bandwidth indicated by the target bandwidth parameter, it is determined that the terminal device is prohibited from accessing the target cell.
The method according to any one of claims 1 to 8, wherein the bandwidth parameter includes at least one of the bandwidth parameter of the corresponding initial downlink bandwidth part and the bandwidth parameter of the corresponding initial uplink bandwidth part.
The method according to any one of claims 1 to 8, wherein the N initial bandwidth parts are in one-to-one correspondence with the N beams of the target cell.
The method according to claim 10, wherein the target cell is a cell of a non-terrestrial communication network NTN system, and the N beams are N satellite beams.
A bandwidth checking apparatus, characterized in that the apparatus is used in terminal equipment, and the apparatus comprises:

A bandwidth parameter acquisition module, configured to acquire bandwidth parameters corresponding to N initial bandwidth parts, where the bandwidth parameters are used to indicate the bandwidths of the corresponding initial bandwidth parts; the N initial bandwidth parts belong to a target cell; N is greater than or equal to an integer of 2;

a target parameter obtaining module, configured to obtain target bandwidth parameters from the bandwidth parameters corresponding to the N initial bandwidth parts;

A bandwidth check module, configured to perform a bandwidth check according to the target bandwidth parameter, where the bandwidth check is used to determine the target cell admission state of the terminal device.
The apparatus according to claim 12, wherein the bandwidth parameters corresponding to the N initial bandwidth parts include N bandwidth parameters, and the N bandwidth parameters are in one-to-one correspondence with the N initial bandwidth parts;

The terminal device is configured with indication information, where the indication information is used to instruct the terminal device to obtain one bandwidth parameter from the N bandwidth parameters as the target bandwidth parameter.
The device of claim 13, wherein:

The target parameter obtaining module is configured to use the bandwidth parameter corresponding to the maximum bandwidth value among the N bandwidth parameters as the target bandwidth parameter.
The device of claim 13, wherein:

The target parameter acquisition module is configured to use, among the N bandwidth parameters, the bandwidth parameter corresponding to the initial bandwidth part currently selected by the terminal device as the target bandwidth parameter.
The apparatus of claim 15, wherein:

The target parameter acquisition module is further configured to use the bandwidth parameter corresponding to the new initial bandwidth portion as the new target bandwidth parameter when the terminal device selects or reselects a new initial bandwidth portion;

The bandwidth checking module is further configured to perform a new bandwidth check according to the new target bandwidth parameter.
The apparatus according to claim 12, wherein the bandwidth parameters corresponding to the N initial bandwidth parts include a single bandwidth parameter, and the single bandwidth parameter is uniformly corresponding to the N initial bandwidth parts;

The target parameter acquisition module is configured to use the single bandwidth parameter as the target bandwidth parameter.
The device of claim 12, wherein:

The bandwidth parameter obtaining module is configured to obtain the bandwidth parameters corresponding to the N initial bandwidth parts from the system information block SIB1 in the system message.
The device according to claim 12, wherein the bandwidth checking module is configured to:

When the terminal device supports the bandwidth indicated by the target bandwidth parameter, determine that the terminal device passes the bandwidth check;

When the terminal device does not support the bandwidth indicated by the target bandwidth parameter, it is determined that the terminal device is prohibited from accessing the target cell.
The apparatus according to any one of claims 12 to 19, wherein the bandwidth parameter comprises at least one of a bandwidth parameter of the corresponding initial downlink bandwidth part and a bandwidth parameter of the corresponding initial uplink bandwidth part.
The method according to any one of claims 12 to 19, wherein the N initial bandwidth parts are in one-to-one correspondence with the N beams of the target cell.
The method according to claim 21, wherein the target cell is a cell of a non-terrestrial communication network NTN system, and the N beams are N satellite beams.
A computer device, characterized in that the computer device is implemented as a terminal device, and the computer device includes a processor, a memory, and a transceiver;

The processor is configured to acquire bandwidth parameters corresponding to the N initial bandwidth parts, where the bandwidth parameters are used to indicate the bandwidths of the corresponding initial bandwidth parts; the N initial bandwidth parts belong to one target cell; N is greater than or equal to an integer of 2;

The processor is further configured to obtain a target bandwidth parameter from the bandwidth parameters corresponding to the N initial bandwidth parts;

The processor is further configured to perform a bandwidth check according to the target bandwidth parameter, where the bandwidth check is used to determine the target cell admission state of the terminal device.
A computer-readable storage medium, wherein a computer program is stored in the storage medium, and the computer program is configured to be executed by a processor to implement the bandwidth checking method according to any one of claims 1 to 11 .