Methods and apparatus for capability reporting in mobile communications
By associating a primary UE with a collaborative UE for data forwarding and reporting capabilities, the method optimizes MIMO performance and ensures regulatory compliance in unlicensed bands, addressing limitations in mobile communication systems.
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- MEDIATEK INC
- Filing Date
- 2025-11-26
- Publication Date
- 2026-06-04
AI Technical Summary
The challenge in mobile communication systems is optimizing data forwarding operations, particularly in scenarios where a UE's MIMO capability is limited by channel quality, hardware/software limitations, and power constraints, and the use of unlicensed bands for local link communication may violate regulatory constraints like Occupied Channel Bandwidth (OCB) requirements.
A method involving a primary UE establishing an association with a collaborative UE for data forwarding, reporting capabilities to a network node, and receiving resource allocations that comply with OCB requirements in unlicensed bands, enabling efficient data transmission through amplify-and-forward with frequency translation.
Enhances MIMO performance by expanding effective MIMO layers and ensures compliance with regulatory requirements for unlicensed band usage, improving data throughput and stability in mobile communications.
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Figure CN2025137797_04062026_PF_FP_ABST
Abstract
Description
METHODS AND APPARATUS FOR CAPABILITY REPORTING IN MOBILE COMMUNICATIONSCROSS REFERENCE TO RELATED PATENT APPLICATION (S)
[0001] The present disclosure is part of a non-provisional application claiming the priority benefit of U.S. Patent Application No. 63 / 725,157, filed 26 November 2024, the content of which herein being incorporated by reference in its entirety.TECHNICAL FIELD
[0002] The present disclosure is generally related to mobile communications and, more particularly, to capability reporting in mobile communications.BACKGROUND
[0003] Unless otherwise indicated herein, approaches described in this section are not prior art to the claims listed below and are not admitted as prior art by inclusion in this section.
[0004] Multiple-input multiple-output (MIMO) is an antenna technology for wireless communications in which multiple antennas are used at both the source (e.g., transmitter) and the destination (e.g., receiver) . The antennas at each end of the communication apparatus are combined to minimize errors, optimize data throughput and improve the capacity of radio transmissions by enabling data to travel over many signal paths at the same time. Creating multiple versions of the same signal provides more opportunities for the data to reach the receiving antenna without being affected by fading, which improves the signal-to-noise ratio and error rate. By boosting the capability of radio frequency (RF) systems, MIMO technology can create a more stable connection, less congestion and high data throughput.
[0005] In a mobile communication system, if a UE could support a high number of MIMO layers, it could have diversity gain or multiplexing gain. However, the number of available MIMO layers is limited by channel quality between a network node (e.g., the base station (BS) or a next-generation Node-B (gNB) ) and the UE. In addition, hardware and / or software limitations and power limitations of the UE could also limit the MIMO capability of the UE. Therefore, if there is another UE-controlled device (e.g., a collaborative UE, a relay, or a repeater that may act as an external antenna panel wirelessly connected to the UE) that could help forward the data / signaling via another frequency, it could increase the effective number of MIMO layers and boost the MIMO performance significantly.
[0006] To support data forwarding, the Uu interface data in frequency f1 (or frequency band #1) is forwarded between a primary UE and the collaborative UE by using frequency f2 (or frequency band #2) . The collaborative UE may perform data forwarding with frequency translation (FT-forwarding) between frequency band #1 and frequency band #2 with nearly zero latency.
[0007] Accordingly, how to optimize the overall performance of the data forwarding operation is an important issue for the newly developed wireless communication network.SUMMARY
[0008] The following summary is illustrative only and is not intended to be limiting in any way. That is, the following summary is provided to introduce concepts, highlights, benefits and advantages of the novel and non-obvious techniques described herein. Select implementations are further described below in the detailed description. Thus, the following summary is not intended to identify essential features of the claimed subject matter, nor is it intended for use in determining the scope of the claimed subject matter.
[0009] An objective of the present disclosure is to propose solutions or schemes that address the aforementioned issues pertaining to capability reporting in mobile communications.
[0010] In one aspect, a method may involve an apparatus establishing an association with a collaborative apparatus. The method may also involve the apparatus transmitting a report indicating a capability associated with a transmission mode to a network node. In an event that the transmission mode is enabled, the method may further involve the apparatus receiving a first radio frequency (RF) signal that carries a data signal and is transmitted at a first transmission power by the network node in a first frequency resource within a first channel bandwidth and receiving a second RF signal that carries the data signal and is transmitted at a second transmission power by the collaborative apparatus in a second frequency resource within a second channel bandwidth. The second frequency resource may comprise an unlicensed band.
[0011] In one aspect, a method may involve a network node receiving a report indicating a capability associated with a transmission mode involving a transmission of an apparatus from the apparatus, wherein the apparatus establishes an association with a collaborative apparatus, and the transmission of the apparatus is in an unlicensed band. The method may also involve the network node determining a resource allocation meeting an occupied channel bandwidth (OCB) requirement for the transmission mode. The method may further involve the network node transmitting control information regarding the resource allocation to the apparatus. The method may further involve the network node transmitting a data signal in a licensed band meeting the resource allocation in an event that the transmission mode is enabled.
[0012] In one aspect, an apparatus may involve a transceiver which, during operation, wirelessly communicates with a network node. The apparatus may also involve a processor communicatively coupled to the transceiver. The processor, during operation, may perform operations comprising establishing, via the transceiver, an association with a collaborative apparatus. The processor may also perform operations comprising transmitting, via the transceiver, a report indicating a capability associated with a transmission mode to the network node. In an event that the transmission mode is enabled, the processor may also perform operations comprising receiving, via the transceiver, a first radio frequency (RF) signal that carries a data signal and is transmitted at a first transmission power by the network node in a first frequency resource within a first channel bandwidth, and receiving, via the transceiver, a second RF signal that carries the data signal and is transmitted at a second transmission power by the collaborative apparatus in a second frequency resource within a second channel bandwidth. The second frequency resource may comprise an unlicensed band.
[0013] It is noteworthy that, although description provided herein may be in the context of certain radio access technologies, networks and network topologies such as Long-Term Evolution (LTE) , LTE-Advanced, LTE-Advanced Pro, 5th Generation (5G) , New Radio (NR) , Internet-of-Things (IoT) and Narrow Band Internet of Things (NB-IoT) , Industrial Internet of Things (IIoT) , and 6th Generation (6G) , the proposed concepts, schemes and any variation (s) / derivative (s) thereof may be implemented in, for and by other types of radio access technologies, networks and network topologies. Thus, the scope of the present disclosure is not limited to the examples described herein.BRIEF DESCRIPTION OF THE DRAWINGS
[0014] The accompanying drawings are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of the present disclosure. The drawings illustrate implementations of the disclosure and, together with the description, serve to explain the principles of the disclosure. It is appreciable that the drawings are not necessarily in scale as some components may be shown to be out of proportion than the size in actual implementation in order to clearly illustrate the concept of the present disclosure.
[0015] FIG. 1 is a diagram depicting an example scenario under schemes in accordance with implementations of the present disclosure.
[0016] FIG. 2 is a diagram depicting an example scenario of an operation flow for device collaborative communications in accordance with implementations of the present disclosure.
[0017] FIG. 3 is a diagram depicting an example scenario of wideband resource allocation under schemes in accordance with implementations of the present disclosure.
[0018] FIG. 4 is a diagram depicting an example scenario of interlaced resource allocation under schemes in accordance with implementations of the present disclosure.
[0019] FIG. 5 is a diagram depicting an example scenario of interlaced resource allocation under schemes in accordance with implementations of the present disclosure.
[0020] FIG. 6 is a diagram depicting an example communication system having an example communication apparatus, an example network apparatus and an example collaborative apparatus in accordance with an implementation of the present disclosure.
[0021] FIG. 7 is a diagram depicting an example process in accordance with an implementation of the present disclosure.
[0022] FIG. 8 is a diagram depicting another example process in accordance with an implementation of the present disclosure. DETAILED DESCRIPTION OF PREFERRED IMPLEMENTATIONS
[0023] Detailed embodiments and implementations of the claimed subject matters are disclosed herein. However, it shall be understood that the disclosed embodiments and implementations are merely illustrative of the claimed subject matters which may be embodied in various forms. The present disclosure may, however, be embodied in many different forms and should not be construed as limited to the exemplary embodiments and implementations set forth herein. Rather, these exemplary embodiments and implementations are provided so that description of the present disclosure is thorough and complete and will fully convey the scope of the present disclosure to those skilled in the art. In the description below, details of well-known features and techniques may be omitted to avoid unnecessarily obscuring the presented embodiments and implementations. Overview
[0024] Implementations in accordance with the present disclosure relate to various techniques, methods, schemes and / or solutions pertaining to capability reporting in mobile communications. According to the present disclosure, a number of possible solutions may be implemented separately or jointly. That is, although these possible solutions may be described below separately, two or more of these possible solutions may be implemented in one combination or another.
[0025] FIG. 1 illustrates an example scenario 100 under schemes in accordance with implementations of the present disclosure. Scenario 100 involves at least a primary UE and a collaborative UE supporting device collaborative communications, and a network node, which may be a part of a wireless communication network (e.g., an LTE network, a 5G / NR network, an IoT network or a 6G network) . Scenario 100 illustrates the framework of data forwarding operation in a communication system. The primary UE may expand its MIMO capability (e.g., effective number of MIMO layers) by using data forwarding via the collaborative UE. Specifically, the primary UE may directly communicate with the network node (e.g., gNB) on a first frequency f1 (or in a first frequency band #1, for example, in a licensed band) . The first frequency f1 may comprise a mid-band frequency (e.g., frequency range 1 (FR1) ) which has wide area coverage and is suitable for long-range communication. In addition to the direct communication with the network node, the primary UE may establish an indirect communication with the network node via the collaborative UE. The collaborative UE may communicate with the primary UE via a local link on a second frequency f2 (or in a second frequency band #2, for example, in an unlicensed band) . The second frequency f2 may comprise a high-band frequency (e.g., frequency range 2 (FR2) ) , which has a high data rate and is suitable for short-range communication. For long-range communication, the collaborative UE may also communicate with the network node in the first frequency f1 (or in a first frequency band #1) . Thus, the collaborative UE may perform an inter-band frequency translation or conversion to translate or shift the first frequency f1 in the first frequency band #1 into the second frequency f2 in the second frequency band #2, or translate or shift the second frequency f2 in the second frequency band #2 into the first frequency f1 in the first frequency band #1. The collaborative UE may help forward the data transmission between the primary UE and the network node. The data forwarding performed by the collaborative UE may comprise the layer 1 (L1) forwarding and / or the layer 2 (L2) forwarding. For example, the collaborative UE may perform amplify-and-forward with frequency translation between band #1 and band #2 with nearly zero latency to support data forwarding (i.e., the FT-forwarding) .
[0026] When the second frequency f2 operates in the unlicensed spectrum, certain regulatory and technical requirements must be met to ensure fair coexistence and minimal interference with other devices sharing the same band. These requirements are typically defined by national or regional authorities, and may include constraints on transmission power, spectrum occupancy, and interference mitigation mechanisms.
[0027] In the scenarios involving device collaborative communications, if the network node is unaware that the primary UE is utilizing an unlicensed band over the local link, it may apply a scheduling policy without satisfying regulatory constraints. As a result, the local transmission may fail to comply with applicable regulatory requirements, such as the Occupied Channel Bandwidth (OCB) requirements. The OCB requirements regulate how concentrated the transmission power must be within a given channel and mandate that a specified percentage of transmission power be confined within a defined portion of the channel bandwidth. For example, when using a 20 MHz Listen-Before-Talk (LBT) channel in an unlicensed band, it is typically required that at least 99.9%of the transmitted power be confined within more than 80%of the channel bandwidth, which means at least 16 MHz of the 20 MHz must contain 99.9%of the signal’s power.
[0028] To address this issue, various techniques, methods, schemes and / or solutions for capability reporting and associated resource allocation are proposed. In the implementations of the present disclosure, the UE (e.g., the primary UE) may establish an association with a collaborative apparatus (e.g., the collaborative UE) and transmit a report indicating a capability associated with a transmission mode to a network node (e.g., BS or gNB) . The UE may report its capability associated with the transmission mode to inform the network node that it may use the unlicensed band for local link communication.
[0029] In some implementations, the reported capability may imply that there is a collaborative apparatus associated with the UE, and the collaborative apparatus is able to perform the amplify-and-forward with frequency translation between the frequency band #1 and the frequency band #2. The band #2 may be used for the local link communication between the collaborative apparatus and the UE, and the band #2 may comprise an unlicensed band. The UE may perform device collaborative communications with the collaborative apparatus in the transmission mode.
[0030] The UE may expect to receive a signal from the network node to activate or enable the transmission mode after reporting the capability. In an event that the network node acknowledges or authorizes the local link communication, the UE may receive an activation signal from the network node indicating that the transmission mode is enabled.
[0031] In an event that the transmission mode is enabled, the UE may transceive a first RF signal carrying a data signal with the network node in a first frequency resource and transceive a second RF signal carrying the data signal with the collaborative apparatus in a second frequency resource. More specifically, in the uplink direction, the UE may transmit an RF signal that carries a data signal to the network node in the first frequency resource and transmit an RF signal that carries the same data signal to the collaborative apparatus in the second frequency resource. In the downlink direction, the UE may receive an RF signal that carries a data signal from the network node in the first frequency resource and receive an RF signal that carries the same data signal from the collaborative apparatus in the second frequency resource. In some implementations, the second frequency resource may comprise an unlicensed band.
[0032] In some implementations, to comply with the regulatory and technical requirements related to the use of the unlicensed band, the data signal may be carried by at least one orthogonal frequency division multiplexing (OFDM) symbol occupying equally spaced resource elements or equally spaced resource blocks.
[0033] In some implementations, the UE may receive control signaling or control information from the network node. The control signaling or control information (hereinafter referred to as “control information” for brevity) may indicate a resource allocation for carrying the data signal. The resource allocation may indicate or comprise uplink resource allocation and / or downlink resource allocation. In some implementations, the resource allocation complies with applicable regulatory and technical requirements for communications over the unlicensed band, such as the OCB requirements.
[0034] In some implementations, in the downlink direction, the UE may receive a first RF signal that carries a data signal and is transmitted at a first transmission power by the network node in a first frequency resource within a first channel bandwidth, and receive a second RF signal that carries the data signal and is transmitted at a second transmission power by the collaborative apparatus in a second frequency resource within a second channel bandwidth. The OCB requirement regulates transmission characteristics so that at least 99.9%of the first transmission power is confined within more than 80%of the first channel bandwidth, and / or at least 99.9%of the second transmission power is confined within more than 80%of the second channel bandwidth. The OCB requirement may also regulate the uplink transmission characteristics in a manner similar.
[0035] In some implementations, the control information may indicate a wideband resource allocation (e.g., a wideband-based scheduling) or an interlacing-based resource allocation (e.g., a frequency-domain interlaced resource allocation) for carrying the data signal in the transmission mode.
[0036] For example, for a wideband resource allocation, the whole channel bandwidth may be allocated to the UE, with some band-edge subcarriers or physical resource blocks (PRBs) being dropped (i.e., no Physical Downlink Shared Channel (PDSCH) being scheduled) to meet the OCB requirements.
[0037] In some implementations, the resource allocation may be interlaced per resource block (RB) . In some implementations, the control information may indicate at least one of a starting RB index, a frequency-domain spacing between two allocated RBs, a frequency-domain spacing between two allocated and adjacent RBs, a number of allocated RBs and a length of an allocated bandwidth.
[0038] In some implementations, the resource allocation may be interlaced per subcarrier. In some implementations, the control information may indicate at least one of a starting subcarrier index (relative to a reference subcarrier index) , a frequency-domain gap between two allocated subcarriers, a frequency-domain gap between two allocated and adjacent subcarriers, a number of allocated subcarriers and a length of an allocated bandwidth.
[0039] From the network node’s perspective, the network node may receive a report indicating a capability associated with a transmission mode involving a transmission of the UE, wherein the transmission of the UE may be in an unlicensed band. The network node may determine a resource allocation or a resource allocation requirement that meets or complies with applicable regulatory and technical requirements for communications over the unlicensed band (for example, a resource allocation meeting the OCB requirements) for the transmission mode. The network node may transmit control information regarding the resource allocation to the UE, and transmit a data signal in a licensed band meeting the resource allocation (or meeting the resource allocation requirement or the OCB requirements) in an event that the transmission mode is enabled.
[0040] In some implementations, the network node may further transmit an activation signal to the UE. The activation signal may indicate that the transmission mode is enabled.
[0041] In some implementations, the resource allocation may comprise a wideband resource allocation or a frequency-domain interlaced resource allocation.
[0042] In some implementations, the control information may indicate at least one of a starting RB index, a frequency-domain spacing between two allocated RBs, a frequency-domain spacing between two allocated and adjacent RBs, a number of allocated RBs and a length of an allocated bandwidth.
[0043] In some implementations, the control information may indicate at least one of a starting subcarrier index (relative to a reference subcarrier index) , a frequency-domain gap between two allocated subcarriers, a frequency-domain gap between two allocated and adjacent subcarriers, a number of allocated subcarriers and a length of an allocated bandwidth.
[0044] In some implementations, the network node may transmit an RF signal carrying a data signal to the UE and / or receive an RF signal carrying a data signal from the UE. In some implementations, the data signal may be carried by at least one OFDM symbol occupying equally spaced resource elements or equally spaced resource blocks.
[0045] FIG. 2 illustrates an example scenario 200 of an operation flow for device collaborative communications in accordance with implementations of the present disclosure. The primary UE may communicate with the network node and enter the RRC_CONNECTED mode to initiate dedicated signaling and data transmission procedures.
[0046] The primary UE may transmit a capability report associated with a transmission mode to the network node, informing that it may use the unlicensed band for local link communication. In an event that the network node acknowledges or authorizes the local link communication, the network node may transmit an activation signal indicating that the transmission mode is enabled to the primary UE.
[0047] The primary UE may also communicate with the collaborative UE via a wireless communication protocol, such as Wi-Fi or Bluetooth. The primary UE or the collaborative UE may perform a device discovery and association procedure to enable communication with each other. After the communication between the primary UE and the collaborative UE has been established, the primary UE may provide the necessary information associated with the data forwarding operation, such as information regarding the second frequency f2 or the second frequency band #2, to the collaborative UE.
[0048] The primary UE may request the collaborative UE to activate channel assessment before initiating the data forwarding operation. In some implementations, the channel assessment may comprise one or more operations to evaluate the condition of a wireless channel, including its occupancy status, interference level, and overall transmission quality.
[0049] For example, the collaborative UE may perform channel sensing or initiate an LBT procedure based on a duration and / or a power threshold criterion to determine whether at least one channel within the second frequency band #2 is available for transmission. In an event that a sensed power level is not higher than the power threshold, the sensing may be passed. The collaborative UE may consider that the measured channel is available for transmission and the data forwarding operation may be enabled or activated in the measured channel. As the collaborative UE may act as an external antenna panel wirelessly connected to the primary UE, the antenna capability of the primary UE may be augmented when the data forwarding operation at the collaborative UE is enabled or activated.
[0050] On the other hand, when the sensed power level is higher than the power threshold, the sensing may not be passed. The collaborative UE may consider that the measured channel is busy and is not available for transmission. Therefore, the data forwarding operation may not be enabled or activated in the measured channel.
[0051] The primary UE may receive control information (such as Downlink Control Information (DCI) ) from the network node. The control information may indicate a resource allocation for the primary UE. The control information may also comprise parameters used to trigger or indicate a Channel State Information (CSI) reporting, based on configurations provided via higher-layer signaling. The primary UE may further receive the CSI reference signal (CSI-RS) to perform CSI measurements for downlink channel estimation, or receive data (e.g., via the PDSCH) from the network node.
[0052] In an event that the data forwarding operation at the collaborative UE is enabled or activated, the collaborative UE may also receive the CSI-RS or the data via PDSCH and forward the received CSI-RS or data to the primary UE with frequency translation (i.e., the FT-forwarding) . The collaborative UE may repeatedly perform channel assessment and FT-forwarding when the data forwarding operation is enabled or activated.
[0053] The primary UE may derive the CSI based on RS measurement across two bands (e.g., the frequency band #1 and the frequency band #2) . For example, the primary UE may be configured with the CSI-RS in frequency f1, and may derive the CSI according to the RS measured in both the frequency f1 and the frequency f2 when the data forwarding operation at the collaborative UE is enabled or activated (i.e., the FT-forwarding is turned on) . In an event that the data forwarding operation at the collaborative UE is not enabled or activated (i.e., the FT-forwarding is turned off) , the primary UE may derive the CSI only according to the RS measured in the frequency f1. Therefore, different levels of CSI may be reported by the primary UE, depending on whether the FT-forwarding is on or off.
[0054] The primary UE may transmit the CSI report to the network node, and the network node may schedule downlink transmissions for the primary UE based on the CSI report.
[0055] Regarding the uplink scenario, the primary UE may transmit Sounding Reference Signal (SRS) for uplink channel estimation, or transmit data via Physical Uplink Shared Channel (PUSCH) to the network node. In an event that the data forwarding operation at the collaborative UE is enabled or activated, the collaborative UE may also receive the SRS or data from the primary UE and forward the received SRS or data to the network node with frequency translation (i.e., the FT-forwarding) . The network node may schedule uplink transmissions for the primary UE based on the SRS. The collaborative UE may repeatedly perform channel assessment and FT-forwarding when the data forwarding operation is enabled or activated.
[0056] In an event that the primary UE determines that data forwarding is not required, the primary UE may request the collaborative UE to deactivate channel assessment and deactivate, disable or turn off the FT-forwarding.
[0057] In some implementations, in response to the reception of the capability report associated with the transmission mode from the primary UE, the network node may determine the resource allocation for the transmission mode, as introduced above, in an event that the network node acknowledges or authorizes the local link communication. For example, the network node may determine the resource allocation meeting the OCB requirements for the transmission mode. The network node may transmit control information (such as the DCI) regarding the resource allocation to the primary UE.
[0058] FIG. 3 illustrates an example scenario 300 of wideband resource allocation under schemes in accordance with implementations of the present disclosure. Assuming that the available bandwidth may be partitioned into (N+1) PRBs indexed from 0 to N, where N is a positive integer, the network node may allocate all or part of the RBs within the available bandwidth to the primary UE to meet the OCB requirements. Similarly, assuming that the available bandwidth may be partitioned into (K+1) subcarriers indexed from 0 to K, where K is a positive integer, the network node may allocate all or part of the subcarriers within the available bandwidth to the primary UE to meet the OCB requirements.
[0059] FIG. 4 illustrates an example scenario 400 of interlaced resource allocation under schemes in accordance with implementations of the present disclosure. Assuming that the available bandwidth may be partitioned into 51 PRBs with standard indices from 0 to 50, each RB may also be assigned an interlace index ranging cyclically from 0 to 4. The network node may perform interlaced resource allocation to meet the OCB requirements. For example, the network node may allocate RBs with the same interlace index to the primary UE. In scenario 400, the network node may allocate RBs with the interlace index 0 to the primary UE. Therefore, the RBs with index = 0, 5, 10, …, 50 are selected. The network node may set the first bit, which corresponds to the interlace index 0, in the Frequency Domain Resource Allocation (FDRA) field in the DCI to ‘1’ to indicate that the RB (s) associated with interlace index 0 are scheduled for transmission to the primary UE, thereby enabling interlaced resource allocation across the frequency domain.
[0060] FIG. 5 illustrates an example scenario 500 of interlaced resource allocation under schemes in accordance with implementations of the present disclosure. Assuming that the available bandwidth may be partitioned into 601 subcarriers with standard indices from 0 to 600, each subcarrier may also be assigned an interlace index ranging cyclically from 0 to 4. The network node may perform interlaced resource allocation to meet the OCB requirements. For example, the network node may allocate subcarriers with the same interlace index to the primary UE. In scenario 500, the network node may allocate subcarriers with the interlace index 0 to the primary UE. Therefore, the subcarriers with index = 0, 5, 10, …, 600 are selected. The network node may set the first bit, which corresponds to the interlace index 0, in the FDRA field in the DCI to ‘1’ to indicate that the subcarrier (s) associated with interlace index 0 are scheduled for transmission to the primary UE, thereby enabling interlaced resource allocation across the frequency domain.
[0061] As mentioned above, in device collaborative communications, the collaborative UE performs amplify-and-forward with frequency translation between band #1 and band #2 with nearly zero latency. When the resource allocation in band #1 adopts a wideband or a frequency-domain interlaced scheme, the resources used in band #2 for device collaborative communications will inherently exhibit similar wideband or frequency-domain interlaced characteristics. Therefore, based on the proposed solutions for capability reporting and associated resource allocation as introduced above, when the resources allocated by the network node in band #1 for the primary UE under the transmission mode comply with the regulatory and technical requirements related to the use of the unlicensed band (e.g., meet the OCB requirements or follow a wideband or frequency-domain interlaced pattern) , the corresponding resource allocation in band #2 will also comply with the regulatory and technical requirements (that is, will also meet the OCB requirements or reflect a wideband or frequency-domain interlaced allocation characteristics) . Illustrative Implementations
[0062] FIG. 6 illustrates an example communication system 600 having an example communication apparatus 610, an example network apparatus 620 and an example collaborative apparatus 630 in accordance with an implementation of the present disclosure. Each of the communication apparatus 610, the network apparatus 620 and the collaborative apparatus 630 may perform various functions to implement schemes, techniques, processes and methods described herein pertaining to capability reporting in mobile communications, including scenarios / schemes described above as well as the process 700 and the process 800 described below.
[0063] The communication apparatus 610 may be a part of an electronic apparatus, which may be a UE such as a portable or mobile apparatus, a wearable apparatus, a wireless communication apparatus or a computing apparatus. For instance, the communication apparatus 610 may be implemented in a smartphone, a smartwatch, a personal digital assistant, a digital camera, or a computing equipment such as a tablet computer, a laptop computer or a notebook computer. The communication apparatus 610 may also be a part of a machine type apparatus, which may be an IoT, NB-IoT, or IIoT apparatus, such as an immobile or a stationary apparatus, a home apparatus, a wire communication apparatus or a computing apparatus. For instance, the communication apparatus 610 may be implemented in a smart thermostat, a smart fridge, a smart door lock, a wireless speaker or a home control center. Alternatively, the communication apparatus 610 may be implemented in the form of one or more integrated-circuit (IC) chips, such as, for example and without limitation, one or more single-core processors, one or more multi-core processors, one or more reduced-instruction set computing (RISC) processors, or one or more complex-instruction-set-computing (CISC) processors. The communication apparatus 610 may include at least some of those components shown in FIG. 6, such as a processor 612, for example. The communication apparatus 610 may further include one or more other components not pertinent to the proposed scheme of the present disclosure (e.g., internal power supply, display device and / or user interface device) , and, thus, such component (s) of the communication apparatus 610 are neither shown in FIG. 6 nor described below in the interest of simplicity and brevity.
[0064] The network apparatus 620 may be a part of an electronic apparatus, which may be a network node such as a satellite, a BS, a gNB, a small cell, a router, or a gateway of a 4G / 5G / B5G / 6G, NR, IoT, NB-IoT or IIoT network. Alternatively, the network apparatus 620 may be implemented in the form of one or more IC chips, such as, for example and without limitation, one or more single-core processors, one or more multi-core processors, or one or more RISC or CISC processors. The network apparatus 620 may include at least some of those components shown in FIG. 6, such as a processor 622, for example. The network apparatus 620 may further include one or more other components not pertinent to the proposed scheme of the present disclosure (e.g., internal power supply, display device and / or user interface device) , and, thus, such component (s) of the network apparatus 620 are neither shown in FIG. 6 nor described below in the interest of simplicity and brevity.
[0065] The collaborative apparatus 630 may be a part of an electronic apparatus, which may be a UE such as a portable or mobile apparatus, a wearable apparatus, a wireless communication apparatus, a repeater, a relay device, a Customer Premises Equipment (CPE) or a computing apparatus. For instance, the collaborative apparatus 630 may be implemented in a smartphone, a smartwatch, XR glasses, a personal digital assistant, a digital camera, or a computing equipment such as a tablet computer, a laptop computer or a notebook computer. The collaborative apparatus 630 may also be a part of a machine type apparatus, which may be an IoT, NB-IoT, or IIoT apparatus, such as an immobile or a stationary apparatus, a home apparatus, a wire communication apparatus or a computing apparatus. For instance, the collaborative apparatus 630 may be implemented in a smart thermostat, a smart fridge, a smart door lock, a wireless speaker or a home control center. Alternatively, the collaborative apparatus 630 may be implemented in the form of one or more IC chips such as, for example and without limitation, one or more single-core processors, one or more multi-core processors, one or more RISC processors, or one or more CISC processors. The collaborative apparatus 630 may include at least some of those components shown in FIG. 6, such as a processor 632, for example. The collaborative apparatus 630 may further include one or more other components not pertinent to the proposed scheme of the present disclosure (e.g., internal power supply, display device and / or user interface device) , and, thus, such component (s) of the collaborative apparatus 630 are neither shown in FIG. 6 nor described below in the interest of simplicity and brevity.
[0066] In some implementations, the communication apparatus 610 may be a primary communication apparatus, such as the aforementioned primary UE, and the collaborative apparatus 630 may be a collaborative communication apparatus, such as the aforementioned collaborative UE.
[0067] In one aspect, each of the processor 612, the processor 622 and the processor 632 may be implemented in the form of one or more single-core processors, one or more multi-core processors, or one or more CISC processors. That is, even though a singular term “a processor” is used herein to refer to the processor 612, the processor 622 and the processor 632, each of the processor 612, the processor 622 and the processor 632 may include multiple processors in some implementations and a single processor in other implementations in accordance with the present disclosure. In another aspect, each of the processor 612, the processor 622 and the processor 632 may be implemented in the form of hardware (and, optionally, firmware) with electronic components including, for example and without limitation, one or more transistors, one or more diodes, one or more capacitors, one or more resistors, one or more inductors, one or more memristors and / or one or more varactors that are configured and arranged to achieve specific purposes in accordance with the present disclosure. In other words, in at least some implementations, each of the processor 612, the processor 622 and the processor 632 is a special-purpose machine specifically designed, arranged and configured to perform specific tasks in accordance with various implementations of the present disclosure.
[0068] In some implementations, the communication apparatus 610 may also include a transceiver 616 coupled to the processor 612 and capable of wirelessly transmitting and receiving data. In some implementations, the transceiver 616 may be capable of wirelessly communicating with different types of UEs and / or wireless networks of different RATs. In some implementations, the transceiver 616 may be equipped with a plurality of antenna ports (not shown) , such as, for example, four antenna ports. That is, the transceiver 616 may be equipped with multiple transmit antennas and multiple receive antennas for MIMO wireless communications. In some implementations, the network apparatus 620 may also include a transceiver 626 coupled to the processor 622 and capable of wirelessly transmitting and receiving data. In some implementations, the transceiver 626 may be capable of wirelessly communicating with different types of UEs of different RATs. In some implementations, the transceiver 626 may be equipped with a plurality of antenna ports (not shown) , such as, for example, four antenna ports. That is, transceiver 626 may be equipped with multiple transmit antennas and multiple receive antennas for MIMO wireless communications. In some implementations, the collaborative apparatus 630 may also include a transceiver 636 coupled to the processor 632 and capable of wirelessly transmitting and receiving data. In some implementations, the transceiver 636 may be capable of wirelessly communicating with different types of UEs and / or wireless networks of different RATs. In some implementations, the transceiver 636 may be equipped with a plurality of antenna ports (not shown) such as, for example, four antenna ports. That is, the transceiver 636 may be equipped with multiple transmit antennas and multiple receive antennas for MIMO wireless communications.
[0069] In some implementations, the communication apparatus 610 may further include a memory 614 coupled to the processor 612 and capable of being accessed by the processor 612 and storing data therein. In some implementations, the network apparatus 620 may further include a memory 624 coupled to the processor 622 and capable of being accessed by the processor 622 and storing data therein. In some implementations, the collaborative apparatus 630 may further include a memory 634 coupled to the processor 632 and capable of being accessed by the processor 632 and storing data therein. Each of the memory 614, the memory 624 and the memory 634 may include a type of random-access memory (RAM) such as dynamic RAM (DRAM) , static RAM (SRAM) , thyristor RAM (T-RAM) and / or zero-capacitor RAM (Z-RAM) . Alternatively, or additionally, each of the memory 614, the memory 624 and the memory 634 may include a type of read-only memory (ROM) such as mask ROM, programmable ROM (PROM) , erasable programmable ROM (EPROM) and / or electrically erasable programmable ROM (EEPROM) . Alternatively, or additionally, each of the memory 614, the memory 624 and the memory 634 may include a type of non-volatile random-access memory (NVRAM) such as flash memory, solid-state memory, ferroelectric RAM (FeRAM) , magnetoresistive RAM (MRAM) and / or phase-change memory.
[0070] Accordingly, the communication apparatus 610, the network apparatus 620 and the collaborative apparatus 630 may wirelessly communicate with each other via the transceiver 616, the transceiver 626 and the transceiver 636, respectively. To aid better understanding, the following description of the operations, functionalities and capabilities of each of the communication apparatus 610, the network apparatus 620 and the collaborative apparatus 630 is provided in the context of a mobile communication environment in which the communication apparatus 610 is implemented in or as a primary communication apparatus or a primary UE, the network apparatus 620 is implemented in or as a network node or a network device and the collaborative apparatus 630 is implemented in or as a collaborative communication apparatus, a collaborative device or a collaborative UE of a communication network supporting device collaborative communications.
[0071] Each of the communication apparatus 610, the network apparatus 620 and the collaborative apparatus 630 may be a communication entity capable of communicating with each other using various proposed schemes in accordance with the present disclosure. For illustrative purposes and without limitation, a description of capabilities of the communication apparatus 610, as a primary UE, the network apparatus 620, as a network node and the collaborative apparatus 630, as a collaborative UE, is provided below with the processes 700 and 800. Illustrative Processes
[0072] FIG. 7 illustrates an example process 700 in accordance with an implementation of the present disclosure. The process 700 may be an example implementation of above scenarios / schemes, whether partially or completely, including those described above with respect to capability reporting and associated resource allocation in mobile communications. The process 700 may represent an aspect of the implementation of features of the communication apparatus 610. The process 700 may include one or more operations, actions, or functions as illustrated by one or more of blocks 710 and 720. Although illustrated as discrete blocks, various blocks of the process 700 may be divided into additional blocks, combined into fewer blocks, or eliminated, depending on the desired implementation. Moreover, the blocks of the process 700 may be executed in the order shown in FIG. 7 or, alternatively, in a different order. The process 700 may be implemented by or in the communication apparatus 610 or any suitable UE or machine type device. Solely for illustrative purposes and without limiting the scope, the process 700 is described below in the context of the communication apparatus 610, as a primary UE, the network apparatus 620, as a network node (e.g., a BS such as gNB) and the collaborative apparatus 630, as a collaborative UE. Process 700 may begin at block 710.
[0073] At block 710, the process 700 may involve the processor 612 of the communication apparatus 610 establishing an association with a collaborative apparatus, such as the collaborative apparatus 630. The process 700 may proceed from block 710 to block 720.
[0074] At block 720, the process 700 may involve the processor 612 transmitting a report indicating a capability associated with a transmission mode to a network node, such as the network apparatus 620. In an event that the transmission mode is enabled, the process 700 may also involve the processor 612 receiving a first RF signal that carries a data signal and is transmitted at a first transmission power by the network apparatus 620 in a first frequency resource within a first channel bandwidth and receiving a second RF signal that carries the data signal and is transmitted at a second transmission power by the collaborative apparatus 630 in a second frequency resource within a second channel bandwidth. The second frequency resource may comprise an unlicensed band.
[0075] In some implementations, the process 700 may further involve the processor 612 receiving an activation signal from the network apparatus 620. The activation signal may indicate that the transmission mode is enabled.
[0076] In some implementations, the data signal may be carried by at least one OFDM symbol occupying equally spaced resource elements or equally spaced resource blocks.
[0077] In some implementations, the process 700 may further involve the processor 612 receiving control information from the network apparatus 620. The control information may indicate a resource allocation for carrying the data signal, and the resource allocation meets an OCB requirement.
[0078] In some implementations, the OCB requirement may regulate that at least 99.9%of the first transmission power is confined within more than 80%of the first channel bandwidth, or at least 99.9%of the second transmission power is confined within more than 80%of the second channel bandwidth.
[0079] In some implementations, the process 700 may further involve the processor 612 receiving control information from the network apparatus 620. The control information may indicate a wideband resource allocation or a frequency-domain interlaced resource allocation for carrying the data signal in the transmission mode.
[0080] In some implementations, the process 700 may further involve the processor 612 receiving control information from the network apparatus 620. The control information may indicate at least one of a starting RB index, a frequency-domain spacing between two allocated RBs, a number of allocated RBs and a length of an allocated bandwidth.
[0081] In some implementations, the process 700 may further involve the processor 612 receiving control information from the network apparatus 620. The control information may indicate at least one of a starting subcarrier index (relative to a reference subcarrier index) , a frequency-domain gap between two allocated subcarriers, a number of allocated subcarriers and a length of an allocated bandwidth.
[0082] FIG. 8 illustrates an example process 800 in accordance with an implementation of the present disclosure. The process 800 may be an example implementation of above scenarios / schemes, whether partially or completely, including those described above with respect to capability reporting and associated resource allocation in mobile communications. The process 800 may represent an aspect of the implementation of features of the network apparatus 620. The process 800 may include one or more operations, actions, or functions as illustrated by one or more of blocks 810, 820 and 830. Although illustrated as discrete blocks, various blocks of the process 800 may be divided into additional blocks, combined into fewer blocks, or eliminated, depending on the desired implementation. Moreover, the blocks of the process 800 may be executed in the order shown in FIG. 8 or, alternatively, in a different order. The process 800 may be implemented by or in the network apparatus 620 as well as any variations thereof. Solely for illustrative purposes and without limiting the scope, process 800 is described below in the context of the communication apparatus 610, as a primary UE, the network apparatus 620, as a network node (e.g., a BS such as gNB) and the collaborative apparatus 630, as a collaborative UE. Process 800 may begin at block 810.
[0083] At block 810, the process 800 may involve the processor 622 of the network apparatus 620 receiving a report indicating a capability associated with a transmission mode involving a transmission of an apparatus, such as the communication apparatus 610, wherein the communication apparatus 610 establishes an association with a collaborative apparatus such as the collaborative apparatus 630, and wherein the transmission of the communication apparatus 610 may be in an unlicensed band. The process 800 may proceed from block 810 to block 820.
[0084] At block 820, the process 800 may involve the processor 622 determining a resource allocation meeting an OCB requirement for the transmission mode. In an event that the transmission mode is enabled, the process 800 may also involve the processor 612 transceiving a first RF signal carrying a data signal at a first transmission power with the network apparatus 620 in a first frequency resource within a first channel bandwidth and transceiving a second RF signal carrying the data signal at a second transmission power with the collaborative apparatus 630 in a second frequency resource within a second channel bandwidth. The process 800 may proceed from block 820 to block 830.
[0085] At block 830, the process 800 may involve the processor 622 transmitting control information regarding the resource allocation to the communication apparatus 610. The process 800 may proceed from block 830 to block 840.
[0086] At block 840, the process 800 may involve the processor 622 transmitting a data signal in a licensed band meeting the resource allocation in an event that the transmission mode is enabled.
[0087] In some implementations, the OCB requirement regulates that at least 99.9%of a transmission power of a signal transmitted in a channel bandwidth is confined within more than 80%of the channel bandwidth. For example, the OCB requirement regulates that at least 99.9%of the first transmission power is confined within more than 80%of the first channel bandwidth, or at least 99.9%of the second transmission power is confined within more than 80%of the second channel bandwidth.
[0088] In some implementations, the process 800 may also involve the processor 622 transmitting an activation signal to the communication apparatus 610. The activation signal may indicate that the transmission mode is enabled.
[0089] In some implementations, the data signal may be carried by at least one OFDM symbol occupying equally spaced resource elements or equally spaced resource blocks.
[0090] In some implementations, the resource allocation may comprise a wideband resource allocation or a frequency-domain interlaced resource allocation.
[0091] In some implementations, the control information may indicate at least one of a starting RB index, a frequency-domain spacing between two allocated RBs, a number of allocated RBs and a length of an allocated bandwidth.
[0092] In some implementations, the control information may indicate at least one of a starting subcarrier index (relative to a reference subcarrier index) , a frequency-domain gap between two allocated subcarriers, a number of allocated subcarriers and a length of an allocated bandwidth. Additional Notes
[0093] The herein-described subject matter sometimes illustrates different components contained within, or connected with, different other components. It is to be understood that such depicted architectures are merely examples, and that in fact many other architectures can be implemented which achieve the same functionality. In a conceptual sense, any arrangement of components to achieve the same functionality is effectively "associated" such that the desired functionality is achieved. Hence, any two components herein combined to achieve a particular functionality can be seen as "associated with" each other such that the desired functionality is achieved, irrespective of architectures or intermedial components. Likewise, any two components so associated can also be viewed as being "operably connected" , or "operably coupled" , to each other to achieve the desired functionality, and any two components capable of being so associated can also be viewed as being "operably couplable" , to each other to achieve the desired functionality. Specific examples of operably couplable include but are not limited to physically mateable and / or physically interacting components and / or wirelessly interactable and / or wirelessly interacting components and / or logically interacting and / or logically interactable components.
[0094] Further, with respect to the use of substantially any plural and / or singular terms herein, those having skill in the art can translate from the plural to the singular and / or from the singular to the plural as is appropriate to the context and / or application. The various singular / plural permutations may be expressly set forth herein for sake of clarity.
[0095] Moreover, it will be understood by those skilled in the art that, in general, terms used herein, and especially in the appended claims, e.g., bodies of the appended claims, are generally intended as “open” terms, e.g., the term “including” should be interpreted as “including but not limited to, ” the term “having” should be interpreted as “having at least, ” the term “includes” should be interpreted as “includes but is not limited to, ” etc. It will be further understood by those within the art that if a specific number of an introduced claim recitation is intended, such an intent will be explicitly recited in the claim, and in the absence of such recitation no such intent is present. For example, as an aid to understanding, the following appended claims may contain usage of the introductory phrases "at least one" and "one or more" to introduce claim recitations. However, the use of such phrases should not be construed to imply that the introduction of a claim recitation by the indefinite articles "a" or "an" limits any particular claim containing such introduced claim recitation to implementations containing only one such recitation, even when the same claim includes the introductory phrases "one or more" or "at least one" and indefinite articles such as "a" or "an, " e.g., “a” and / or “an” should be interpreted to mean “at least one” or “one or more; ” the same holds true for the use of definite articles used to introduce claim recitations. In addition, even if a specific number of an introduced claim recitation is explicitly recited, those skilled in the art will recognize that such recitation should be interpreted to mean at least the recited number, e.g., the bare recitation of "two recitations, " without other modifiers, means at least two recitations, or two or more recitations. Furthermore, in those instances where a convention analogous to “at least one of A, B, and C, etc. ” is used, in general such a construction is intended in the sense one having skill in the art would understand the convention, e.g., “a system having at least one of A, B, and C” would include but not be limited to systems that have A alone, B alone, C alone, A and B together, A and C together, B and C together, and / or A, B, and C together, etc. In those instances where a convention analogous to “at least one of A, B, or C, etc. ” is used, in general such a construction is intended in the sense one having skill in the art would understand the convention, e.g., “a system having at least one of A, B, or C” would include but not be limited to systems that have A alone, B alone, C alone, A and B together, A and C together, B and C together, and / or A, B, and C together, etc. It will be further understood by those within the art that virtually any disjunctive word and / or phrase presenting two or more alternative terms, whether in the description, claims, or drawings, should be understood to contemplate the possibilities of including one of the terms, either of the terms, or both terms. For example, the phrase “A or B” will be understood to include the possibilities of “A” or “B” or “A and B. ”
[0096] From the foregoing, it will be appreciated that various implementations of the present disclosure have been described herein for purposes of illustration, and that various modifications may be made without departing from the scope and spirit of the present disclosure. Accordingly, the various implementations disclosed herein are not intended to be limiting, with the true scope and spirit being indicated by the following claims.
Claims
1.A method, comprising:establishing, by a processor of an apparatus, an association with a collaborative apparatus; andtransmitting, by the processor, a report indicating a capability associated with a transmission mode to a network node,wherein, in an event that the transmission mode is enabled, the method further comprises:receiving, by the processor, a first radio frequency (RF) signal that carries a data signal and is transmitted at a first transmission power by the network node in a first frequency resource within a first channel bandwidth; andreceiving, by the processor, a second RF signal that carries the data signal and is transmitted at a second transmission power by the collaborative apparatus in a second frequency resource within a second channel bandwidth,wherein the second frequency resource comprises an unlicensed band.2.The method of Claim 1, further comprising:receiving, by the processor, an activation signal from the network node, wherein the activation signal indicates that the transmission mode is enabled.3.The method of Claim 1, wherein the data signal is carried by at least one orthogonal frequency division multiplexing (OFDM) symbol occupying equally spaced resource elements or equally spaced resource blocks.4.The method of Claim 1, further comprising:receiving, by the processor, control information from the network node, wherein the control information indicates a resource allocation for carrying the data signal, and wherein the resource allocation meets an occupied channel bandwidth (OCB) requirement.5.The method of Claim 4, wherein the OCB requirement regulates that at least 99.9%of the first transmission power is confined within more than 80%of the first channel bandwidth, or at least 99.9%of the second transmission power is confined within more than 80%of the second channel bandwidth.6.The method of Claim 1, further comprising:receiving, by the processor, control information from the network node, wherein the control information indicates at least one of a starting resource block (RB) index, a frequency-domain spacing between two allocated RBs, a number of allocated RBs and a length of an allocated bandwidth.7.The method of Claim 1, further comprising:receiving, by the processor, control information from the network node, wherein the control information indicates at least one of a starting subcarrier index, a frequency-domain gap between two allocated subcarriers, a number of allocated subcarriers and a length of an allocated bandwidth.8.A method, comprising:receiving, by a processor of a network node, a report indicating a capability associated with a transmission mode involving a transmission of an apparatus, wherein the transmission of the apparatus is in an unlicensed band;determining, by the processor, a resource allocation meeting an occupied channel bandwidth (OCB) requirement for the transmission mode;transmitting, by the processor, control information regarding the resource allocation to the apparatus; andtransmitting, by the processor, a data signal in a licensed band meeting the resource allocation in an event that the transmission mode is enabled.9.The method of Claim 8, wherein the OCB requirement regulates that at least 99.9%of a transmission power of a signal transmitted in a channel bandwidth is confined within more than 80%of the channel bandwidth.10.The method of Claim 8, further comprising:transmitting, by the processor, an activation signal to the apparatus, wherein the activation signal indicates that the transmission mode is enabled.11.The method of Claim 8, wherein the data signal is carried by at least one orthogonal frequency division multiplexing (OFDM) symbol occupying equally spaced resource elements or equally spaced resource blocks.12.The method of Claim 8, wherein the resource allocation comprises a wideband resource allocation or a frequency-domain interlaced resource allocation.13.The method of Claim 8, wherein the control information indicates at least one of a starting resource block (RB) index, a frequency-domain spacing between two allocated RBs, a number of allocated RBs and a length of an allocated bandwidth.14.The method of Claim 8, wherein the control information indicates at least one of a starting subcarrier index, a frequency-domain gap between two allocated subcarriers, a number of allocated subcarriers and a length of an allocated bandwidth.15.An apparatus, comprising:a transceiver which, during operation, wirelessly communicates with a network node; anda processor communicatively coupled to the transceiver such that, during operation, the processor performs operations comprising:establishing, via the transceiver, an association with a collaborative apparatus; andtransmitting, via the transceiver, a report indicating a capability associated with a transmission mode to the network node,wherein, in an event that the transmission mode is enabled, the processor further performs operations comprising:receiving, via the transceiver, a first radio frequency (RF) signal that carries a data signal and is transmitted at a first transmission power by the network node in a first frequency resource within a first channel bandwidth; andreceiving, via the transceiver, a second RF signal that carries the data signal and is transmitted at a second transmission power by the collaborative apparatus in a second frequency resource within a second channel bandwidth,wherein the second frequency resource comprises an unlicensed band.16.The apparatus of Claim 15, wherein, during operation, the processor further performs operations comprising:receiving, via the transceiver, an activation signal from the network node, wherein the activation signal indicates that the transmission mode is enabled.17.The apparatus of Claim 15, wherein the data signal is carried by at least one orthogonal frequency division multiplexing (OFDM) symbol occupying equally spaced resource elements or equally spaced resource blocks.18.The apparatus of Claim 15, wherein, during operation, the processor further performs operations comprising:receiving, via the transceiver, control information from the network node, wherein the control information indicates a resource allocation for carrying the data signal, and wherein the resource allocation meets an occupied channel bandwidth (OCB) requirement.19.The apparatus of Claim 15, wherein, during operation, the processor further performs operations comprising:receiving, via the transceiver, control information from the network node, wherein the control information indicates at least one of a starting resource block (RB) index, a frequency-domain spacing between two allocated RBs, a number of allocated RBs and a length of an allocated bandwidth.20.The apparatus of Claim 15, wherein, during operation, the processor further performs operations comprising:receiving, via the transceiver, control information from the network node, wherein the control information indicates at least one of a starting subcarrier index, a frequency-domain gap between two allocated subcarriers, a number of allocated subcarriers and a length of an allocated bandwidth.