Listen before talk LBT subband division method, apparatus, device, and medium

Abstract

Embodiments of this disclosure disclose a listen before talk LBT subband division method, apparatus, device, and medium. The method includes: obtaining (S101) first information, where the first information includes information about frequency domain starting and ending positions of a target, and the target includes a carrier or a bandwidth part BWP; and dividing (S102) the target into LBT subbands based on the information about the frequency domain starting and ending positions.

Description

Listen before you speak: LBT sub-band segmentation method, apparatus, equipment and media Technical Field

[0001] This disclosure relates to the field of mobile communication technology, and in particular to a method, apparatus, device and medium for LBT subband division with a listen-before-send feature. Background Technology

[0002] On unlicensed frequency bands of New Radio (NR), before transmitting information, terminal devices or network devices need to perform Clear Channel Assessment (CCA) or Extended Clear Channel Assessment (eCCA) to listen to the channel, i.e., perform Energy Detection (ED). When the detected energy is below a certain threshold, the channel is determined to be empty, and transmission can begin, i.e., listen before talk (LBT).

[0003] For broadband carriers in unlicensed frequency bands, CCA (Carrier Access Assistance) is performed on designated LBT (Low Bit Transmission) subbands. Many resource configurations, scheduling, and indications are performed at the LBT subband granularity. Therefore, how to allocate LBT subbands for unlicensed frequency bands is a problem that urgently needs to be solved.

[0004] Summary of the Invention

[0005] This disclosure provides a method, apparatus, device, and medium for LBT subband segmentation, which can segment LBT subbands.

[0006] On one hand, embodiments of this disclosure provide an LBT subband partitioning method, including:

[0007] Acquire first information, wherein the first information includes the frequency domain start and end position information of the target, and the target includes a carrier or bandwidth part (BWP);

[0008] Based on the start and end position information in the frequency domain, the target is divided into LBT sub-bands.

[0009] On the other hand, embodiments of this disclosure provide an LBT subband partitioning device, comprising:

[0010] The acquisition module is used to acquire first information, wherein the first information includes the frequency domain start and end position information of the target, and the target includes a carrier or a BWP;

[0011] The partitioning module is used to divide the target into LBT subbands based on the start and end position information in the frequency domain.

[0012] In another aspect, this disclosure provides an LBT subband partitioning device, including: a processor, a memory, and a computer program stored in the memory and executable on the processor. When the computer program is executed by the processor, it implements the LBT subband partitioning method provided in this disclosure.

[0013] In another aspect, embodiments of this disclosure provide a computer-readable storage medium storing a computer program, which, when executed by a processor, implements the LBT subband partitioning method provided in embodiments of this disclosure.

[0014] The LBT subband division method, apparatus, device, and medium of this disclosure can divide a target into LBT subbands based on the frequency domain start and end position information of the carrier or the frequency domain start and end position information of the BWP. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this disclosure, the accompanying drawings used in the embodiments of this disclosure will be briefly introduced below. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 shows a flowchart of the LBT subband partitioning method provided in an embodiment of this disclosure;

[0017] Figure 2 shows a schematic diagram of a first example of the LBT subband partitioning results of this disclosure;

[0018] Figure 3 shows a schematic diagram of a second example of the LBT subband partitioning results of this disclosure;

[0019] Figure 4 shows a schematic diagram of a third example of the LBT subband partitioning results of this disclosure;

[0020] Figure 5 shows a schematic diagram of a fourth example of the LBT subband partitioning results of this disclosure;

[0021] Figure 6 shows a schematic diagram of a fifth example of the LBT subband partitioning results of this disclosure;

[0022] Figure 7 shows a schematic diagram of a first example of the frequency domain configuration of this disclosure;

[0023] Figure 8 shows a schematic diagram of a second example of the frequency domain configuration of this disclosure;

[0024] Figure 9 shows a schematic diagram of a third example of the frequency domain configuration of this disclosure;

[0025] Figure 10 shows a schematic diagram of the structure of the LBT sub-band division device provided in an embodiment of the present disclosure;

[0026] Figure 11 shows a schematic diagram of the hardware structure of an example of the network-side device of this disclosure;

[0027] Figure 12 shows a schematic diagram of the hardware structure of an example of the terminal device of this disclosure. Detailed Implementation

[0028] The technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this disclosure. Based on the embodiments of this disclosure, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this disclosure.

[0029] This disclosure provides an LBT subband partitioning method, apparatus, device, and medium. The LBT subband partitioning method provided in this disclosure will be described first.

[0030] Figure 1 shows a flowchart of the LBT subband partitioning method provided in an embodiment of this disclosure. The LBT subband partitioning method may include:

[0031] S101: Obtain first information, wherein the first information includes the frequency domain start and end position information of the target, and the target includes a carrier or a BWP. It is understood that the frequency domain start and end position information includes frequency domain start position information and frequency domain end position information.

[0032] S102: Based on the start and end position information in the frequency domain, the target is divided into LBT sub-bands.

[0033] For a carrier, the frequency domain start and end position information of the carrier can be obtained from System Information Block (SIB) 1.

[0034] For a BWP, before receiving Radio Resource Control (RRC) messages (such as Setup messages, Resume messages, and Reestablishment messages), its frequency domain start and end location information is the same as that of Control Resource Set (CORESET) #0. After receiving an RRC message, the frequency domain start and end location information of a BWP is configured by the information in SIB1. For BWPs dedicated to terminal devices, the reference bandwidth range to which the BWP belongs can be obtained by configuring the subcarrier spacing (SCS) of the BWP and the carrier information in SIB1. Within this reference bandwidth range, the frequency domain start and end location information of the BWP is obtained by using the resource indicator value (RIV) indicated by the location and bandwidth.

[0035] The LBT subband partitioning method of this disclosure can be applied to network-side equipment and terminal equipment. The network-side equipment disclosed herein can be a base station, which can be a commonly used base station, an evolved Node Base Station (eNB), or a network-side device in a 5G system (e.g., a next-generation Node Base Station (gNB)) or a network-side device in a subsequent evolution communication system. However, the above terminology does not constitute a limitation on the scope of protection of this disclosure. Examples of terminal equipment include, but are not limited to, mobile phones, tablets, laptops, PDAs, vehicle terminals, wearable devices, and pedometers.

[0036] In one embodiment of this disclosure, the first information may further include LBT channel planning information. Different LBT channel bandwidths may correspond to different LBT channel planning information. Different locations (such as countries or regions) may also correspond to different LBT channel planning information. For example, China's LBT channel planning information is that in the frequency range of 5170 MHz to 5330 MHz, every 20 MHz starting from 5170 MHz is an LBT channel; the United States' LBT channel planning information is that in the frequency range of 5170 MHz to 5330 MHz, every 40 MHz starting from 5170 MHz is an LBT channel.

[0037] When dividing a target into LBT subbands, the target can be divided into LBT subbands based on the frequency domain start and end position information and LBT channel planning information. In some embodiments, the target can be divided into L L LBT subbands based on the frequency domain start and end position information and LBT channel planning information.

[0038] For example, suppose the LBT channel planning information is that every 20MHz starting from 5170MHz is an LBT channel in the frequency range of 5170MHz to 5330MHz. The target's frequency domain starting position is 5210MHz, and the target's frequency domain ending position is 5290MHz. The target can be divided into 4 LBT sub-bands. The LBT sub-band division result is shown in Figure 2. Figure 2 shows a schematic diagram of a first example of the LBT sub-band division result of this disclosure.

[0039] In one embodiment of this disclosure, the first information may further include: LBT subband division granularity. When dividing the LBT subbands of a target, the target can be divided into M LBT subbands starting from the frequency domain start position of the target according to the LBT subband division granularity.

[0040] For example, assume that the LBT subband division granularity is 40MHz, the target frequency domain start position is 5210MHz, and the target frequency domain end position is 5290MHz.

[0041] Starting from the target's frequency domain starting position of 5210MHz, each 40MHz segment is divided into an LBT subband. The LBT subband division result is shown in Figure 3. Figure 3 illustrates a schematic diagram of a second example of the LBT subband division result of this disclosure.

[0042] In one embodiment of this disclosure, the first information may further include: LBT subband division granularity and division start position information. When dividing the LBT subband of the target, the target's frequency domain start position to the division start position can be divided into one LBT subband; starting from the division start position, the target is divided into N LBT subbands according to the LBT subband division granularity.

[0043] For example, assume the LBT subband division granularity is 20MHz, the target frequency domain start position is 5210MHz, the target frequency domain end position is 5290MHz, and the division start position is 5240MHz.

[0044] The target's frequency domain starting position, from 5210MHz to 5240MHz, is divided into one LBT sub-band. Starting from 5240MHz, each 20MHz segment is divided into an LBT sub-band, specifically, 5240MHz to 5260MHz, 5260MHz to 5280MHz, and 5280MHz to 5290MHz. The LBT sub-band division result is shown in Figure 4. Figure 4 illustrates a schematic diagram of a third example of the LBT sub-band division result of this disclosure.

[0045] In one embodiment of this disclosure, the first information further includes: frequency domain segmentation position information. When dividing the LBT sub-bands of the target, the target can be divided into P LBT sub-bands based on the frequency domain segmentation position, starting from the frequency domain start position of the target.

[0046] For example, assume the target's frequency domain start position is Fstart and its frequency domain end position is Fend. The frequency domain segmentation information includes five frequency domain segmentation points: F1, F2, F3, F4, and F5, with the frequencies corresponding to these points increasing sequentially. This divides the target into six LBT sub-bands, with frequency ranges from Fstart to F1, F1 to F2, F2 to F3, F3 to F4, F4 to F5, and F5 to Fend, respectively. The LBT sub-band division result is shown in Figure 5. Figure 5 illustrates a fourth example of the LBT sub-band division result of this disclosure.

[0047] In one embodiment of this disclosure, the first information may further include: the starting physical resource block (PRB) information and the ending PRB information for each LBT sub-band. When dividing the LBT sub-bands of a target, the target can be divided into Q LBT sub-bands based on the frequency domain start and end position information, the starting PRB information, and the ending PRB information.

[0048] The PRB information may include the PRB index or the PRB offset.

[0049] In one embodiment of this disclosure, when the target is a carrier, the first information may further include: frequency domain start and end position information of the BWP.

[0050] When dividing the LBT subbands of the BWP, the frequency domain start position of the BWP can be determined to be the first position of the LBT subband of the carrier; the frequency domain end position of the BWP can be determined to be the second position of the LBT subband of the carrier; based on the first position and the second position, the BWP is divided into R LBT subbands.

[0051] For example, assuming the frequency domain start position of the BWP is determined to be located in the i-th LBT sub-band of the carrier, and the frequency domain end position of the BWP is determined to be located in the j-th LBT sub-band of the carrier, then the BWP is divided into j-i+1 LBT sub-bands. The LBT sub-band division result is shown in Figure 6. Figure 6 shows a schematic diagram of a fifth example of the LBT sub-band division result of this disclosure.

[0052] The LBT subband division method of this disclosure can divide the target into LBT subbands based on the frequency domain start and end position information of the carrier or the frequency domain start and end position information of the BWP.

[0053] In one embodiment of this disclosure, the LBT subbands can also be numbered according to their frequency positions.

[0054] For example, there are six LBT subbands with frequency ranges of Fstart to F1, F1 to F2, F2 to F3, F3 to F4, F4 to F5 and F5 to Fend.

[0055] The LBT subbands with frequency ranges from Fstart to F1 are numbered #0; the LBT subbands with frequency ranges from F1 to F2 are numbered #1; the LBT subbands with frequency ranges from F2 to F3 are numbered #2; the LBT subbands with frequency ranges from F3 to F4 are numbered #3; the LBT subbands with frequency ranges from F4 to F5 are numbered #4; and the LBT subbands with frequency ranges from F5 to Fend are numbered #5.

[0056] In one embodiment of this disclosure, the network-side device may further configure second information, wherein the second information includes an LBT subband indication field, the LBT subband indication field being used to indicate that the LBT subband used is an LBT subband divided based on a predefined LBT subband division method.

[0057] The predefined LBT subband partitioning methods include: the partitioning method described above, which divides the target into L LBT subbands based on frequency domain start and end position information and LBT channel planning information; the partitioning method described above, which divides the target into M LBT subbands according to LBT subband partitioning granularity, starting from the frequency domain start position of the target; the partitioning method described above, which divides the target from the frequency domain start position to the partition start position into one LBT subband; the partitioning method described above, which divides the target into N LBT subbands according to LBT subband partitioning granularity, starting from the partition start position; the partitioning method described above, which divides the target into P LBT subbands based on frequency domain partitioning position, starting from the frequency domain start position of the target; or the partitioning method described above, which divides the target into Q LBT subbands based on frequency domain start and end position information, start PRB information, and end PRB information.

[0058] The method of dividing the target LBT subband is called the target-based LBT subband division method. It can be understood that the carrier-based LBT subband division method refers to the method of dividing the carrier LBT subband, while the BWP-based LBT subband division method refers to the method of dividing the BWP LBT subband.

[0059] For example, the LBT subband indication field indicates that the LBT subband used is the 4th subband in the LBT subband division method based on carrier frequency. This carrier-based LBT subband division method results in 6 LBT subbands. The 6 LBT subbands are: LBT subband #0 with a frequency range of Fstart to F1; LBT subband #1 with a frequency range of F1 to F2; LBT subband #2 with a frequency range of F2 to F3; LBT subband #3 with a frequency range of F3 to F4; LBT subband #4 with a frequency range of F4 to F5; and LBT subband #5 with a frequency range of F5 to Fend. The LBT subband indication field indicates that the LBT subband used is LBT subband #3 with a frequency range of F3 to F4.

[0060] In one embodiment of this disclosure, the size of the LBT subband indicator field depends on the number of LBT subbands divided.

[0061] In one embodiment of this disclosure, a bitmap or LBT subband index may be used to indicate the LBT subband used.

[0062] In one embodiment of this disclosure, the LBT subbands used for resource configuration, resource scheduling, and resource indication in the LBT subband indication field are all LBT subbands divided by a carrier-based LBT subband division method.

[0063] In one embodiment of this disclosure, the LBT subband indication field can indicate that the LBT subband used by different resource configurations, resource scheduling and resource indications is an LBT subband divided based on different LBT subband division methods; wherein, the different LBT subband division methods include: carrier-based LBT subband division method and BWP-based LBT subband division method.

[0064] In one embodiment of this disclosure, the LBT subband indication field can indicate that the LBT subband used in the frequency domain configuration of the BWP is the LBT subband divided by the carrier-based LBT subband division method, and the LBT subband used in the frequency domain configuration of the downlink or uplink resources is the LBT subband divided by the BWP-based LBT subband division method.

[0065] In one embodiment of this disclosure, the LBT subband indication field can indicate that the LBT subband used in the downlink control information (DCI) of the common search space is an LBT subband divided by a carrier-based LBT subband division method, and the LBT subband used in the DCI of the search space of the terminal device is an LBT subband divided by a BWP-based LBT subband division method.

[0066] In one embodiment of this disclosure, the LBT subband indication field can indicate that the LBT subband used in the back-off DCI is the LBT subband divided by the carrier-based LBT subband division method, and the LBT subband used in the non-back-off DCI is the LBT subband divided by the BWP-based LBT subband division method.

[0067] In one embodiment of this disclosure, the LBT subband indication field can indicate that the LBT subband used when the group common physical downlink control channel indication frequency domain is idle is the LBT subband divided by the carrier-based LBT subband, and the LBT subband used when the terminal device's specific physical downlink control channel indication frequency domain is idle is the LBT subband divided by the BWP-based LBT subband.

[0068] In one embodiment of this disclosure, the network-side device may send the second information to a higher-layer or terminal device. The higher-layer or terminal device uses the indicated LBT subband according to the LBT subband indicated by the LBT subband indication field.

[0069] In one embodiment of this disclosure, when the LBT subband indication field indicates that the frequency domain configuration of the downlink or uplink resource uses a BWP-based LBT subband partitioning method, the LBT subband indication field can also be used to indicate that the frequency domain configuration of the downlink or uplink resource is the intersection of the frequency domain configuration indicated by the LBT subband and the frequency domain configuration indicated by other frequency domains.

[0070] For example, when the frequency domain configuration of the control resource set (CORESET), search space, channel state information reference signal (CSI-RS), or phase-tracking reference signal (PT-RS), etc., spans multiple LBT subbands, the frequency domain configuration can be indicated as the intersection of the frequency domain configuration indicated by the used LBT subband and the frequency domain configuration indicated by other frequency domains. Figure 7 illustrates a schematic diagram of a first example of the frequency domain configuration of this disclosure.

[0071] In one embodiment of this disclosure, when the LBT subband indication field indicates that the LBT subband used in the frequency domain configuration of the downlink or uplink resource is an LBT subband divided by the BWP-based LBT subband, the LBT subband indication field can also be used to indicate that the frequency domain configuration of the downlink or uplink resource is a copy of the frequency domain configuration indicated by the LBT subband used, which is a copy of the frequency domain configuration indicated by other frequency domains.

[0072] For example, when the frequency domain configuration of CORESET, search space, CSI-RS, or PT-RS, etc., is limited to one LBT subband, the frequency domain configuration can be instructed to copy the frequency domain configuration indicated by other frequency domains to the frequency domain configuration indicated by the LBT subband used. As shown in Figure 8, Figure 8 illustrates a schematic diagram of a second example of the frequency domain configuration of this disclosure.

[0073] In one embodiment of this disclosure, when the LBT subband indication field indicates that the LBT subband used in the frequency domain configuration of the uplink resource is an LBT subband divided by the BWP-based LBT subband, the LBT subband indication field can also be used to indicate that the frequency domain configuration of the uplink resource is a frequency domain configuration interleaved with the frequency domain configuration indicated by the LBT subband used.

[0074] For example, the frequency domain configuration of uplink resources includes an uplink interlace index number and an LBT subband indicator index for the BWP. The physical resource block (PRB) represented by the uplink interlace number is the PRB used for transmitting the uplink resource within the frequency domain range indicated by the LBT subband. As shown in Figure 9, Figure 9 illustrates a third example of the frequency domain configuration of this disclosure. If the interlace index number of the uplink resource allocation is 0 and the LBT subband indicator index is 0, then the PRB index of this uplink resource configuration is: PRB#0, PRB#5, PRB#10, ..., PRB#50.

[0075] This disclosure also provides an LBT subband partitioning device. As shown in FIG10, FIG10 illustrates a schematic diagram of the structure of the LBT subband partitioning device provided in this disclosure embodiment. The LBT subband partitioning device 100 may include:

[0076] The acquisition module 101 is used to acquire first information, wherein the first information includes the frequency domain start and end position information of the target, and the target includes a carrier or a BWP.

[0077] The partitioning module 102 is used to divide the target into LBT sub-bands based on the start and end position information in the frequency domain.

[0078] In one embodiment of this disclosure, the first information may further include: LBT channel planning information, wherein different LBT channel bandwidths and / or locations correspond to different LBT channel planning information. Accordingly, the partitioning module 102 may be specifically used to: partition the target into LBT sub-bands based on the frequency domain start and end position information and the LBT channel planning information.

[0079] In one embodiment of this disclosure, the partitioning module 102 can be specifically used for:

[0080] Based on the frequency domain start and end position information and LBT channel planning information, the target is divided into L LBT sub-bands.

[0081] In one embodiment of this disclosure, the first information may further include: LBT subband partitioning granularity; correspondingly, the partitioning module 102 may be specifically used for:

[0082] Starting from the beginning position of the target in the frequency domain, the target is divided into M LBT sub-bands according to the LBT sub-band granularity.

[0083] In one embodiment of this disclosure, the first information may further include: LBT subband partitioning granularity and partitioning start position information. Correspondingly, the partitioning module 102 may be specifically used for:

[0084] Divide the target's frequency domain starting position to the partition starting position into an LBT sub-band of the target;

[0085] Starting from the initial division position, the target is divided into N LBT sub-bands according to the LBT sub-band division granularity.

[0086] In one embodiment of this disclosure, the first information may further include: frequency domain segmentation location information; correspondingly, the segmentation module 102 may be specifically used for:

[0087] Starting from the beginning position of the target's frequency domain, the target is divided into P LBT sub-bands based on the frequency domain segmentation position.

[0088] In one embodiment of this disclosure, the first information may further include: the starting physical resource block information and the ending physical resource block information of each LBT sub-band. Correspondingly, the partitioning module 102 may be specifically used for:

[0089] Based on the frequency domain start and end position information, the starting physical resource block information, and the ending physical resource block information, the target is divided into Q LBT subbands.

[0090] In one embodiment of this disclosure, the target is a carrier wave, and the first information may further include: frequency domain start and end position information of the BWP. Correspondingly, the partitioning module 102 may also be used for:

[0091] The frequency domain start position of BWP is determined to be the first position of the LBT sub-band of the carrier; the frequency domain end position of BWP is determined to be the second position of the LBT sub-band of the carrier; based on the first and second positions, BWP is divided into R LBT sub-bands.

[0092] In one embodiment of this disclosure, the LBT subband partitioning device 100 provided in this embodiment may further include:

[0093] The numbering module is used to number the LBT subbands according to their frequency positions.

[0094] In one embodiment of this disclosure, the LBT subband partitioning device 100 provided in this embodiment may further include:

[0095] The configuration module is used to configure the second information, wherein the second information includes the LBT subband indication field, which is used to indicate that the LBT subband used is an LBT subband divided based on a predefined LBT subband division method.

[0096] In one embodiment of this disclosure, the LBT subband indication field indicates that the LBT subband used for resource configuration, resource scheduling, and resource indication are all LBT subbands divided from carrier-based LBT subbands.

[0097] In one embodiment of this disclosure, the LBT subband indication field indicates that the LBT subband used by different resource configurations, resource scheduling and resource indication are LBT subbands divided based on different LBT subband division methods, wherein the different LBT subband division methods may include: carrier-based LBT subband division method and BWP-based LBT subband division method.

[0098] In one embodiment of this disclosure, the LBT subband indicator field indicates that the LBT subband used for the frequency domain configuration of the BWP is the LBT subband divided by the carrier-based LBT subband division method, and the LBT subband used for the frequency domain configuration of downlink resources or uplink resources is the LBT subband divided by the LBT subband based on the BWP.

[0099] In one embodiment of this disclosure, the LBT subband indicator field can also be used for:

[0100] The frequency domain configuration of the downlink or uplink resource is the intersection of the frequency domain configuration indicated by the LBT subband used and the frequency domain configuration indicated by other frequency domains.

[0101] In one embodiment of this disclosure, the LBT subband indicator field can also be used for:

[0102] The frequency domain configuration of the downlink or uplink resource is copied from the frequency domain configuration of the LBT subband used, which is the frequency domain configuration of other frequency domain indicators.

[0103] In one embodiment of this disclosure, the LBT subband indicator field can also be used for:

[0104] The frequency domain configuration of the uplink resources is interleaved with the frequency domain configuration indicated by the LBT subband used.

[0105] In one embodiment of this disclosure, the LBT subband indication field indicates that the LBT subband used in the downlink control information (DCI) of the common search space is an LBT subband divided by carrier-based LBT subbands, and the LBT subband used in the DCI of the search space of the terminal device is an LBT subband divided by BWP-based LBT subbands.

[0106] In one embodiment of this disclosure, the LBT subband indication field indicates that the LBT subband used in the back-off DCI is the LBT subband divided based on the carrier LBT subband, and the LBT subband used in the non-back-off DCI is the LBT subband divided based on the BWP LBT subband.

[0107] In one embodiment of this disclosure, the LBT subband used when the common physical downlink control channel indication frequency domain of the LBT subband indication domain is idle is an LBT subband divided from the carrier-based LBT subband, and the LBT subband used when the specific physical downlink control channel indication frequency domain of the terminal device is idle is an LBT subband divided from the BWP-based LBT subband.

[0108] This disclosure also provides an LBT subband division device, which can be a network-side device or a terminal device.

[0109] Figure 11 shows a schematic diagram of the hardware structure of an example of a network-side device of this disclosure. The network-side device 200 includes: a memory 111, a processor 112, a transceiver 113, and a computer program stored in the memory 111 and available on the processor 112.

[0110] The processor 112 can be used to: acquire first information, and divide the target into LBT sub-bands according to the frequency domain start and end position information of the target included in the first information, wherein the target includes a carrier or a BWP.

[0111] In one embodiment of this disclosure, the processor 112 may also be used to: configure second information, wherein the second information includes an LBT subband indication field, the LBT subband indication field being used to indicate that the LBT subband used is an LBT subband divided based on a predefined LBT subband division method.

[0112] Transceiver 113 can be used to send second information to higher-level or terminal equipment.

[0113] In Figure 11, the bus architecture may include any number of interconnected buses and bridges, specifically linking various circuits of one or more processors represented by processor 112 and memory represented by memory 111. The bus architecture may also link various other circuits such as peripheral devices, voltage regulators, and power management circuits, which are well known in the art and therefore will not be described further herein. The bus interface provides an interface. Transceiver 113 may be multiple elements, including transmitters and transceivers, providing a unit for communicating with various other devices over a transmission medium, for receiving and transmitting data under the control of processor 112. Processor 112 is responsible for managing the bus architecture and general processing, and memory 111 may store data used by processor 112 during operation.

[0114] Optionally, this disclosure also provides a network-side device, including a processor 112, a memory 111, and a computer program stored in the memory 111 and executable on the processor 112. When the computer program is executed by the processor 112, it implements the various processes of the LBT subband partitioning method embodiment provided in this disclosure and achieves the same technical effect. To avoid repetition, it will not be described again here.

[0115] Figure 12 illustrates a schematic hardware structure of an example terminal device according to this disclosure. The terminal device 120 includes, but is not limited to, components such as: a radio frequency unit 121, a network module 122, an audio output unit 123, an input unit 124, a sensor 125, a display unit 126, a user input unit 127, an interface unit 128, a memory 129, a processor 130, and a power supply 131. Those skilled in the art will understand that the terminal device structure shown in Figure 12 does not constitute a limitation on the terminal device; the terminal device may include more or fewer components than shown, or combine certain components, or have different component arrangements. In embodiments of this disclosure, the terminal device includes, but is not limited to, mobile phones, tablet computers, laptop computers, PDAs, in-vehicle terminals, wearable devices, and pedometers.

[0116] The radio frequency unit 121 is used to receive second information sent by the network side device, wherein the second information includes an LBT subband indication field, which is used to indicate that the LBT subband used is an LBT subband divided based on a predefined LBT subband division method.

[0117] The processor 130 can be used to obtain first information based on the LBT subband indicated by the LBT subband indication domain, and to divide the LBT subband and use the indicated LBT subband based on the frequency domain start and end position information included in the first information.

[0118] Through the embodiments of this disclosure, the target can be divided into LBT subbands.

[0119] It should be understood that, in the embodiments of this disclosure, the radio frequency unit 121 can be used for receiving and transmitting signals during information transmission or calls. In some embodiments, it receives downlink data from the base station and then processes it with the processor 130; additionally, it transmits uplink data to the base station. Typically, the radio frequency unit 121 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low-noise amplifier, a duplexer, etc. Furthermore, the radio frequency unit 121 can also communicate with networks and other devices through a wireless communication system.

[0120] The terminal device provides users with wireless broadband internet access through network module 122, such as helping users send and receive emails, browse web pages, and access streaming media.

[0121] The audio output unit 123 can convert audio data received by the radio frequency unit 121 or the network module 122 or stored in the memory 129 into audio signals and output them as sound. Furthermore, the audio output unit 123 can also provide audio output related to specific functions performed by the terminal device 120 (e.g., call signal reception sound, message reception sound, etc.). The audio output unit 123 includes a speaker, a buzzer, and a receiver, etc.

[0122] Input unit 124 is used to receive audio or video signals. Input unit 124 may include a graphics processing unit (GPU) 1241 and a microphone 1242. The GPU 1241 processes image data of still images or videos acquired by an image capture device (such as a camera) in video capture mode or image capture mode. The processed image frames can be displayed on display unit 126. The image frames processed by GPU 1241 can be stored in memory 129 (or other storage medium) or transmitted via radio frequency unit 121 or network module 122. Microphone 1242 can receive sound and process such sound into audio data. The processed audio data can be converted into a format that can be transmitted to a mobile communication base station via radio frequency unit 121 in telephone call mode.

[0123] The terminal device 120 also includes at least one sensor 125, such as a light sensor, a motion sensor, and other sensors. Specifically, the light sensor includes an ambient light sensor and a proximity sensor. The ambient light sensor can adjust the brightness of the display panel 1261 according to the ambient light level, and the proximity sensor can turn off the display panel 1261 and / or backlight when the terminal device 120 is moved to the ear. As a type of motion sensor, an accelerometer sensor can detect the magnitude of acceleration in various directions (generally three axes). When stationary, it can detect the magnitude and direction of gravity and can be used to identify the terminal device's posture (such as landscape / portrait switching, related games, magnetometer posture calibration), vibration recognition related functions (such as pedometer, tapping), etc. The sensor 125 may also include a fingerprint sensor, pressure sensor, iris sensor, molecular sensor, gyroscope, barometer, hygrometer, thermometer, infrared sensor, etc., which will not be described in detail here.

[0124] The display unit 126 is used to display information input by the user or information provided to the user. The display unit 126 may include a display panel 1261, which may be configured in the form of a liquid crystal display (LCD), an organic light-emitting diode (OLED), or the like.

[0125] User input unit 127 can be used to receive input numerical or character information, and generate key signal inputs related to user settings and function control of the terminal device. Specifically, user input unit 127 includes a touch panel 1271 and other input devices 1272. Touch panel 1271, also known as a touch screen, can collect touch operations performed by the user on or near it (such as operations performed by the user using a finger, stylus, or any suitable object or accessory on or near touch panel 1271). Touch panel 1271 may include two parts: a touch detection device and a touch controller. The touch detection device detects the user's touch position and the signal generated by the touch operation, and transmits the signal to the touch controller; the touch controller receives touch information from the touch detection device, converts it into touch point coordinates, and sends it to the processor 130, and receives and executes commands from the processor 130. In addition, touch panel 1271 can be implemented using various types such as resistive, capacitive, infrared, and surface acoustic wave. In addition to touch panel 1271, user input unit 127 may also include other input devices 1272. Specifically, other input devices 1272 may include, but are not limited to, physical keyboards, function keys (such as volume control buttons, power buttons, etc.), trackballs, mice, joysticks, etc., which will not be described in detail here.

[0126] Furthermore, the touch panel 1271 can cover the display panel 1261. When the touch panel 1271 detects a touch operation on or near it, it transmits the information to the processor 130 to determine the type of touch event. Subsequently, the processor 130 provides corresponding visual output on the display panel 1261 according to the type of touch event. Although in FIG. 12, the touch panel 1271 and the display panel 1261 are used as two separate components to implement the input and output functions of the terminal device, in some embodiments, the touch panel 1271 and the display panel 1261 can be integrated to implement the input and output functions of the terminal device. The specific implementation is not limited here.

[0127] Interface unit 128 serves as an interface for connecting external devices to terminal device 120. For example, external devices may include a wired or wireless headset port, an external power supply (or battery charger) port, a wired or wireless data port, a memory card port, a port for connecting a device with an identification module, an audio input / output (I / O) port, a video I / O port, a headphone port, and so on. Interface unit 128 can be used to receive input from external devices (e.g., data, power, etc.) and transmit the received input to one or more elements within terminal device 120, or it can be used to transmit data between terminal device 120 and external devices.

[0128] The memory 129 can be used to store software programs and various data. The memory 129 may primarily include a program storage area and a data storage area. The program storage area may store the operating system, applications required for at least one function (such as sound playback, image playback, etc.), etc.; the data storage area may store data created based on the use of the mobile phone (such as audio data, phonebook, etc.). Furthermore, the memory 129 may include high-speed random access memory, and may also include non-volatile memory, such as at least one disk storage device, flash memory device, or other volatile solid-state storage device.

[0129] The processor 130 is the control center of the terminal device. It connects various parts of the terminal device via various interfaces and lines. By running or executing software programs and / or modules stored in the memory 129, and by calling data stored in the memory 129, it performs various functions and processes data of the terminal device, thereby providing overall monitoring of the terminal device. The processor 130 may include one or more processing units; optionally, the processor 130 may integrate an application processor and a modem processor. The application processor mainly handles the operating system, user interface, and applications, while the modem processor mainly handles wireless communication. It is understood that the modem processor may not be integrated into the processor 130.

[0130] The terminal device 120 may also include a power supply 131 (such as a battery) that supplies power to various components. Optionally, the power supply 131 may be logically connected to the processor 130 through a power management system, thereby enabling functions such as charging, discharging, and power consumption management through the power management system.

[0131] In addition, the terminal device 120 includes some functional modules not shown, which will not be described in detail here.

[0132] Optionally, this disclosure also provides a terminal device, including a processor 130, a memory 129, and a computer program stored in the memory 129 and executable on the processor 130. When the computer program is executed by the processor 130, it implements the various processes of the LBT subband partitioning method embodiment provided in this disclosure and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0133] This disclosure also provides a computer-readable storage medium storing computer program instructions. When executed by a processor, these computer program instructions implement the various processes of the LBT subband partitioning method embodiment provided in this disclosure, achieving the same technical effects. To avoid repetition, they will not be described again here. Examples of the computer-readable storage medium include non-transitory computer-readable storage media, such as read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0134] The aspects of this disclosure have been described above with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this disclosure. It should be understood that each block in the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing apparatus to produce a machine such that these instructions, executable via the processor of the computer or other programmable data processing apparatus, enable the implementation of the functions / actions specified in one or more blocks of the flowchart illustrations and / or block diagrams. Such a processor can be, but is not limited to, a general-purpose processor, a special-purpose processor, a special application processor, or a field-programmable logic circuit. It is also understood that each block in the block diagrams and / or flowcharts, and combinations of blocks in the block diagrams and / or flowcharts, can also be implemented by special-purpose hardware performing the specified functions or actions, or can be implemented by a combination of special-purpose hardware and computer instructions.

[0135] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0136] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk), and includes several instructions to cause a terminal (which may be a mobile phone, computer, server, air conditioner, or network device, etc.) to execute the methods described in the various embodiments of the present invention.

[0137] The embodiments of this disclosure have been described above with reference to the accompanying drawings. However, this disclosure is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this disclosure without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this disclosure.

Claims

1. A method for LBT subband partitioning based on listening before transmitting, characterized in that, The method includes: Obtain first information, wherein the first information includes the frequency domain start and end position information of the target, and the target includes a carrier or bandwidth portion (BWP); Based on the frequency domain start and end position information, the target is divided into LBT sub-bands.

2. The method according to claim 1, characterized in that, The first information also includes: LBT channel planning information, wherein different LBT channel bandwidths and / or locations correspond to different LBT channel planning information; The step of dividing the target into LBT sub-bands based on the frequency domain start and end position information includes: Based on the frequency domain start and end position information and the LBT channel planning information, the target is divided into LBT sub-bands.

3. The method according to claim 2, characterized in that, The step of dividing the target into LBT sub-bands based on the frequency domain start and end position information and the LBT channel planning information includes: Based on the frequency domain start and end position information and the LBT channel planning information, the target is divided into L LBT sub-bands.

4. The method according to claim 1, characterized in that, The first information also includes: LBT subband division granularity; The step of dividing the target into LBT sub-bands based on the frequency domain start and end position information includes: Starting from the frequency domain starting position of the target, the target is divided into M LBT sub-bands according to the LBT sub-band division granularity.

5. The method according to claim 1, characterized in that, The first information also includes: LBT subband division granularity and division start position information; The step of dividing the target into LBT sub-bands based on the frequency domain start and end position information includes: The frequency domain starting position of the target is divided into an LBT sub-band from the division starting position; Starting from the division start position, the target is divided into N LBT sub-bands according to the LBT sub-band division granularity.

6. The method according to claim 1, characterized in that, The first information also includes: frequency domain segmentation location information; The step of dividing the target into LBT sub-bands based on the frequency domain start and end position information includes: Starting from the frequency domain start position of the target, the target is divided into P LBT sub-bands based on the frequency domain segmentation position.

7. The method according to claim 1, characterized in that, The first information also includes: the starting physical resource block information and the ending physical resource block information of each LBT subband; The step of dividing the target into LBT sub-bands based on the frequency domain start and end position information includes: Based on the frequency domain start and end position information, the starting physical resource block information, and the ending physical resource block information, the target is divided into Q LBT subbands.

8. The method according to any one of claims 3 to 7, characterized in that, The target is a carrier wave; The first information also includes: the frequency domain start and end position information of the BWP; The method further includes: The frequency domain start position of the BWP is determined to be located at the first position of the LBT subband of the carrier; The frequency domain termination position of the BWP is determined to be located at the second position of the LBT subband of the carrier; Based on the first position and the second position, the BWP is divided into R LBT subbands.

9. The method according to claim 1, characterized in that, The method further includes: The LBT subbands are numbered according to their frequency positions.

10. The method according to claim 1, characterized in that, The method further includes: Configure second information, wherein the second information includes an LBT subband indication field, the LBT subband indication field being used to indicate that the LBT subband used is an LBT subband divided based on a predefined LBT subband division method.

11. The method according to claim 10, characterized in that, The LBT subband indication field indicates that the LBT subbands used for resource configuration, resource scheduling, and resource indication are all LBT subbands divided by the carrier-based LBT subband division method.

12. The method according to claim 10, characterized in that, The LBT subband indication field indicates that the LBT subbands used for different resource configurations, resource scheduling, and resource indications are LBT subbands divided based on different LBT subband division methods. Among them, the different LBT subband division methods include: carrier-based LBT subband division method and BWP-based LBT subband division method.

13. The method according to claim 12, characterized in that, The LBT subband indication field indicates that the LBT subband used in the frequency domain configuration of the BWP is the LBT subband divided by the carrier-based LBT subband division method, and the LBT subband used in the frequency domain configuration of downlink or uplink resources is the LBT subband divided by the BWP-based LBT subband division method.

14. The method according to claim 13, characterized in that, The LBT subband indicator field is also used for: The frequency domain configuration of the downlink or uplink resource is the intersection of the frequency domain configuration indicated by the LBT subband used and the frequency domain configuration indicated by other frequency domains.

15. The method according to claim 13, characterized in that, The LBT subband indicator field is also used for: The frequency domain configuration of the downlink or uplink resource is copied from the frequency domain configuration of the LBT subband used, which is the frequency domain configuration of other frequency domain indicators.

16. The method according to claim 13, characterized in that, The LBT subband indicator field is also used for: The frequency domain configuration of the uplink resources is interleaved with the frequency domain configuration indicated by the LBT subband used.

17. The method according to claim 12, characterized in that, The LBT subband indication field indicates that the LBT subband used in the downlink control information (DCI) of the common search space is the LBT subband divided by the carrier-based LBT subband division method, and the LBT subband used in the DCI of the terminal device's search space is the LBT subband divided by the BWP-based LBT subband division method.

18. The method according to claim 12, characterized in that, The LBT subband indication field indicates that the LBT subband used in the back-off DCI is the LBT subband divided by the carrier-based LBT subband division method, and the LBT subband used in the non-back-off DCI is the LBT subband divided by the BWP-based LBT subband division method.

19. The method according to claim 12, characterized in that, The LBT subband used when the common physical downlink control channel indication frequency domain of the LBT subband indication group is idle is the LBT subband divided by the carrier-based LBT subband division method, and the LBT subband used when the specific physical downlink control channel indication frequency domain of the terminal device is idle is the LBT subband divided by the BWP-based LBT subband division method.

20. A LBT sub-band segmentation device that listens before transmitting, characterized in that, The device includes: An acquisition module is used to acquire first information, wherein the first information includes the frequency domain start and end position information of the target, and the target includes a carrier or bandwidth portion (BWP). The partitioning module is used to divide the target into LBT sub-bands based on the frequency domain start and end position information.

21. The apparatus according to claim 20, characterized in that, The first information also includes: LBT channel planning information, wherein different LBT channel bandwidths and / or locations correspond to different LBT channel planning information; The partitioning module is specifically used for: Based on the frequency domain start and end position information and the LBT channel planning information, the target is divided into LBT sub-bands.

22. The apparatus according to claim 21, characterized in that, The partitioning module is specifically used for: Based on the frequency domain start and end position information and the LBT channel planning information, the target is divided into L LBT sub-bands.

23. The apparatus according to claim 20, characterized in that, The first information also includes: LBT subband division granularity; The partitioning module is specifically used for: Starting from the frequency domain starting position of the target, the target is divided into M LBT sub-bands according to the LBT sub-band division granularity.

24. The apparatus according to claim 20, characterized in that, The first information also includes: LBT subband division granularity and division start position information; The partitioning module is specifically used for: The frequency domain starting position of the target is divided into an LBT sub-band from the division starting position; Starting from the division start position, the target is divided into N LBT sub-bands according to the LBT sub-band division granularity.

25. The apparatus according to claim 20, characterized in that, The first information also includes: frequency domain segmentation location information; The partitioning module is specifically used for: Starting from the frequency domain start position of the target, the target is divided into P LBT sub-bands based on the frequency domain segmentation position.

26. The apparatus according to claim 20, characterized in that, The first information also includes: the starting physical resource block information and the ending physical resource block information of each LBT subband; The partitioning module is specifically used for: Based on the frequency domain start and end position information, the starting physical resource block information, and the ending physical resource block information, the target is divided into Q LBT subbands.

27. The apparatus according to any one of claims 22 to 26, characterized in that, The target is a carrier wave; the first information also includes: the frequency domain start and end position information of the BWP; The partitioning module is also used for: The frequency domain start position of the BWP is determined to be located at the first position of the LBT subband of the carrier; The frequency domain termination position of the BWP is determined to be located at the second position of the LBT subband of the carrier; Based on the first position and the second position, the BWP is divided into R LBT subbands.

28. The apparatus according to claim 20, characterized in that, The device further includes: The numbering module is used to number the LBT sub-bands according to their frequency positions.

29. The apparatus according to claim 20, characterized in that, The device further includes: A configuration module is used to configure second information, wherein the second information includes an LBT subband indication field, the LBT subband indication field being used to indicate that the LBT subband used is an LBT subband divided based on a predefined LBT subband division method.

30. The apparatus according to claim 29, characterized in that, The LBT subband indication field indicates that the LBT subbands used for resource configuration, resource scheduling, and resource indication are all LBT subbands divided by the carrier-based LBT subband division method.

31. The apparatus according to claim 29, characterized in that, The LBT subband indication field indicates that the LBT subbands used for different resource configurations, resource scheduling, and resource indications are LBT subbands divided based on different LBT subband division methods. Among them, the different LBT subband division methods include: carrier-based LBT subband division method and BWP-based LBT subband division method.

32. The apparatus according to claim 31, characterized in that, The LBT subband indication field indicates that the LBT subband used in the frequency domain configuration of the BWP is the LBT subband divided by the carrier-based LBT subband division method, and the LBT subband used in the frequency domain configuration of downlink or uplink resources is the LBT subband divided by the BWP-based LBT subband division method.

33. The apparatus according to claim 32, characterized in that, The LBT subband indicator field is also used for: The frequency domain configuration of the downlink or uplink resource is the intersection of the frequency domain configuration indicated by the LBT subband used and the frequency domain configuration indicated by other frequency domains.

34. The apparatus according to claim 32, characterized in that, The LBT subband indicator field is also used for: The frequency domain configuration of the downlink or uplink resource is copied from the frequency domain configuration of the LBT subband used, which is the frequency domain configuration of other frequency domain indicators.

35. The apparatus according to claim 32, characterized in that, The LBT subband indicator field is also used for: The frequency domain configuration of the uplink resources is interleaved with the frequency domain configuration indicated by the LBT subband used.

36. The apparatus according to claim 31, characterized in that, The LBT subband indication field indicates that the LBT subband used in the downlink control information (DCI) of the common search space is the LBT subband divided by the carrier-based LBT subband division method, and the LBT subband used in the DCI of the terminal device's search space is the LBT subband divided by the BWP-based LBT subband division method.

37. The apparatus according to claim 31, characterized in that, The LBT subband indication field indicates that the LBT subband used in the back-off DCI is the LBT subband divided by the carrier-based LBT subband division method, and the LBT subband used in the non-back-off DCI is the LBT subband divided by the BWP-based LBT subband division method.

38. The apparatus according to claim 31, characterized in that, The LBT subband used when the common physical downlink control channel indication frequency domain of the LBT subband indication group is idle is the LBT subband divided by the carrier-based LBT subband division method, and the LBT subband used when the specific physical downlink control channel indication frequency domain of the terminal device is idle is the LBT subband divided by the BWP-based LBT subband division method.

39. A LBT sub-band segmentation device that listens before transmitting, characterized in that, The device includes: a processor, a memory, and a computer program stored in the memory and executable on the processor, wherein the computer program, when executed by the processor, implements the LBT subband partitioning method as described in any one of claims 1 to 19.

40. A computer-readable storage medium, characterized in that, A computer program is stored on the computer-readable storage medium, which, when executed by a processor, implements the LBT subband partitioning method as described in any one of claims 1 to 19.