Methods for spectrum sharing, communication apparatus, and communication system
Dynamic configuration of spectrum parameters for sharing improves spectrum usage efficiency by addressing inefficient static allocation, enhancing flexibility and reducing complexity.
Patent Information
- Application Number
- PCT/CN2024/104696
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- Priority Date
- 2024-04-17
- Filing Date
- 2024-07-10
- Publication Date
- 2025-10-23
AI Technical Summary
Static spectrum allocation schemes among different operators or radio access technologies lead to inefficient spectrum usage due to varying traffic loads, resulting in unoccupied spectrum in one operator/RAT while another operator/RAT lacks sufficient spectrum.
Dynamic configuration of channel bandwidth, frequency resource locations, and Fourier Transformation parameters for spectrum sharing, allowing for flexible use of original and shared spectrum resources.
Enhances spectrum usage efficiency and reduces implementation complexity by enabling dynamic adjustment of spectrum bandwidth.
Smart Images

Figure CN2024104696_23102025_PF_FP_ABST
Abstract
Description
METHODS FOR SPECTRUM SHARING, COMMUNICATION APPARATUS, AND COMMUNICATION SYSTEM
[0001] This application claims the priority to U.S. Provisional Application No.: 63 / 635, 226, filed on April 17, 2024, the disclosure of which is incorporated, in its entirety, by this reference.TECHNICAL FIELD
[0002] The present disclosure relates generally to wireless communications, and particularly to methods for spectrum sharing, a communication apparatus, an apparatus, a communication system and a computer-readable storage medium.BACKGROUND
[0003] In wireless communications, various frequency bands or / and various carrier in frequency band will be used. A static spectrum allocation scheme among different operators or radio access technologies (RATs) in the same or different operator may lead to inefficient spectrum usage overall. This is because since traffic in different operators or RATs in the same or different operator may vary in loading or requirements, an operator or RAT in an operator may have unoccupied spectrum but another operator / RAT may not have enough spectrum to support its traffic.SUMMARY
[0004] The present disclosure provides methods for spectrum sharing, a communication apparatus, an apparatus, a communication system and a computer-readable storage medium.
[0005] According to a first aspect, a method for spectrum sharing is provided, which includes: transmitting first information for indicating one or more first parameters, wherein the one or more first parameters include at least one of: channel bandwidth of a first carrier component (CC) , one or more frequency resource locations of the first CC, frequency resource indexing scheme, numerology, a size of Fourier Transformation (FT) , or a guard band; and transmitting second information for indicating one or more frequency resources for communication based on the first information.
[0006] In the foregoing method, the channel bandwidth of the first CC, the frequency resource locations of the first CC, FT and other first parameters are configurable parameters, so that the spectrum bandwidth of the first CC may change dynamically. In the practical application scene, the first parameters may be dynamically configured, thereby enhancing the spectrum usage efficiency, and reducing the implementation complexity.
[0007] In a possible design, a spectrum of the first CC includes an original spectrum of the first CC and a shared spectrum shared from a second CC.
[0008] In another possible design, subcarriers of the first CC includes a block of subcarriers, and the block of subcarriers include original subcarriers of the first CC and subcarriers shared from the second CC; or frequency sources of the first CC include original frequency resources of the first CC and a block of frequency resources shared from the second CC.
[0009] In yet another possible design, the block of subcarriers are used for signal processing; or the block of frequency resources shared from the second CC and the original frequency resources of the first CC are used as single virtual CC resources.
[0010] In yet another possible design, the subcarriers shared from the second CC are adjacent to the original subcarriers of the first CC; or the block of frequency resources shared from the second CC are adjacent to the original frequency resources of the first CC.
[0011] In yet another possible design, the guard band is between the original subcarriers of the first CC and the subcarriers shared from the second CC; or the guard band is between the original frequency resources of the first CC and the block of frequency resources shared from the second CC.
[0012] In yet another possible design, the one or more frequency resources in the first CC allocated for communication are used for performing single FT process.
[0013] In yet another possible design, the size of the FT is a product of 1024 and 2n, wherein n is an integer.
[0014] In yet another possible design, the FT is Fast Fourier Transformation (FFT) , Inverse Fast Fourier Transform (IFFT) , Discrete Fourier Transform (DFT) , or Inverse Discrete Fourier Transform (IDFT) .
[0015] In yet another possible design, the numerology includes a subcarrier spacing of the first CC, and the subcarrier spacing of the first CC is a product of 15 kHz and 2m, wherein m is an integer.
[0016] In yet another possible design, the guard band is at an edge of frequency resources of the first CC or within frequency resources of the first CC.
[0017] In yet another possible design, the guard band has a minimum value of zero.
[0018] In yet another possible design, subcarriers associated with the guard band is set to a zero power signal or is muted in signal transmissions.
[0019] In yet another possible design, the first information is transmitted via at least one of: radio resource control (RRC) signaling, media access control-control element (MAC-CE) , or downlink control information (DCI) .
[0020] In yet another possible design, further comprising: transmitting third information for indicating one or more second parameters, wherein the one or more second parameters include at least one of: another channel bandwidth of the first CC, one or more another frequency resource locations of the first CC, another frequency resource indexing scheme, another numerology, another size of FT, or another guard band, wherein the one or more second parameters and the one or more first parameters have at least one same parameter with different values; and transmitting fourth information for indicating one or more another frequency resources for communication based on the third information.
[0021] According to a second aspect, a method for spectrum sharing, comprising: receiving first information for indicating one or more first parameters, wherein the one or more first parameters include at least one of: channel bandwidth of a first carrier component (CC) , one or more frequency resource locations of the first CC, frequency resource indexing scheme, numerology, a size of Fourier Transformation (FT) , or a guard band; and receiving second information for indicating one or more frequency resources for communication based on the first information.
[0022] In the foregoing method, the channel bandwidth of the first CC, the frequency resource locations of the first CC, FT and other first parameters are configurable parameters, so that the spectrum bandwidth of the first CC may change dynamically. In the practical application scene, the first parameters may be dynamically configured, thereby enhancing the spectrum usage efficiency, and reducing the implementation complexity.
[0023] In a possible design, a spectrum of the first CC includes an original spectrum of the first CC and a shared spectrum shared from another first CC.
[0024] In another possible design, subcarriers of the first CC include a block of subcarriers, and the block of subcarriers include original subcarriers of the first CC and subcarriers shared from a second CC; or frequency resources of the first CC include original frequency resources of the first CC and a block of frequency resources shared from the second CC.
[0025] In yet another possible design, the block of subcarriers are used for signal processing; or the block of frequency resources and original frequency resources of the first CC are used as single virtual CC resources.
[0026] In yet another possible design, the subcarriers shared from the second CC are adjacent to the original subcarriers of the first CC; or the block of frequency resources shared from the second CC are adjacent to the original frequency resources of the first CC.
[0027] In yet another possible design, the guard band is between the original subcarriers of the first CC and the subcarriers shared from the second CC; or the guard band is between the original frequency resources of the first CC and the block of frequency resources shared from the second CC.
[0028] In yet another possible design, the one or more frequency resources in the first CC allocated for communication are used for performing single FT process.
[0029] In yet another possible design, the size of the FT is a product of 1024 and 2n, wherein n is an integer.
[0030] In yet another possible design, the FT is Fast Fourier Transformation (FFT) , Inverse Fast Fourier Transform (IFFT) , Discrete Fourier Transform (DFT) , or Inverse Discrete Fourier Transform (IDFT) .
[0031] In yet another possible design, the numerology includes a subcarrier spacing of the first CC, and the subcarrier spacing of the first CC is a product of 15 kHz and 2m, wherein m is an integer.
[0032] In yet another possible design, the guard band is at an edge of frequency resources of the first CC or within frequency resources of the first CC.
[0033] In yet another possible design, the guard band has a minimum value of zero.
[0034] In yet another possible design, subcarriers associated with the guard band is set to a zero power signal or is muted in signal transmissions.
[0035] In yet another possible design, the first information is transmitted via at least one of: radio resource control (RRC) signaling, media access control-control element (MAC-CE) , or downlink control information (DCI) .
[0036] In yet another possible design, further comprising: receiving third information for indicating one or more second parameters, wherein the one or more second parameters include at least one of: another channel bandwidth of the first CC, one or more another frequency resource locations of the first CC, another frequency resource indexing scheme, another numerology, another size of FT, or another guard band, wherein the one or more second parameters and the one or more first parameters have at least one same parameter with different values; and receiving fourth information for indicating one or more another frequency resources for communication based on the third information.
[0037] According to a third aspect, a communication apparatus is described. The communication apparatus has a function of implementing the first aspect. For example, the communication apparatus includes a corresponding module, unit, or means (means) for performing operations in the first aspect. The module, unit, or means may be specifically implemented by using software, may be implemented by using hardware, or may be implemented by using software in combination with hardware.
[0038] According to a fourth aspect, a communication apparatus is described. The communication apparatus has a function of implementing the second aspect. For example, the communication apparatus includes a corresponding module, unit, or means (means) for performing operations in the second aspect. The module, unit, or means may be specifically implemented by using software, may be implemented by using hardware, or may be implemented by using software in combination with hardware.
[0039] According to a fifth aspect, another a communication apparatus is described. The communication apparatus includes a memory and one or more processors. The memory is configured to store a part or all of a necessary computer program or instructions for implementing a function in the first aspect. The one or more processors may execute the computer program or the instructions, and when the computer program or the instructions is / are executed, the communication apparatus is enabled to implement the method in any possible design or implementation of the first aspect.
[0040] In some embodiments, the communication apparatus may further include an interface circuit, and the processor is configured to communicate with another apparatus or component through the interface circuit.
[0041] In some implementations, the communication apparatus may further include the memory.
[0042] The communication apparatus may be a base station, a module in a base station, or a chip responsible for a communication function in a base station, for example, a modem chip (also referred to as a baseband chip) or an SoC chip or an SIP chip that includes a modem module.
[0043] According to a sixth aspect, another a communication apparatus is described. The communication apparatus includes a memory and one or more processors. The memory is configured to store a part or all of a necessary computer program or instructions for implementing a function in the second aspect. The one or more processors may execute the computer program or the instructions, and when the computer program or the instructions is / are executed, the communication apparatus is enabled to implement the method in any possible design or implementation of the second aspect.
[0044] In some implementations, the communication apparatus may further include an interface circuit, and the processor is configured to communicate with another apparatus or component through the interface circuit.
[0045] In some implementations, the communication apparatus may further include the memory.
[0046] The communication apparatus may be a terminal, a module in a terminal, or a chip responsible for a communication function in a terminal, for example, a modem chip (also referred to as a baseband chip) or an SoC chip or an SIP chip that includes a modem module.
[0047] According to a seventh aspect, a communication apparatus is described, the communication apparatus includes an interface circuit. The interface circuit is configured to perform the method in any possible design or implementation of the first aspect.
[0048] In some implementations, the interface circuit includes one or more transceivers.
[0049] According to an eighth aspect, a communication apparatus is described, the communication apparatus includes an interface circuit. The interface circuit is configured to perform the method in any possible design or implementation of the second aspect.
[0050] In some implementations, the interface circuit includes one or more transceivers.
[0051] According to a ninth aspect, a communication system is described. The communication system includes a first communication apparatus and a second communication apparatus. The first communication apparatus is configured to perform the method in any one of the possible designs of the first aspect. The second communication apparatus is configured to perform the method in any one of the possible designs of the second aspect.
[0052] According to a tenth aspect, a computer-readable storage medium is described. The computer-readable storage medium stores computer-readable instructions, and when a computer reads and executes the computer-readable instructions, the computer is enabled to perform the method in any one of the possible designs of the first aspect to the second aspect.
[0053] According to an eleventh aspect, this application provides a computer program product. When a computer reads and executes the computer program product, the computer is enabled to perform the method in any one of the possible designs of the first aspect to the second aspect.BRIEF DESCRIPTION OF THE DRAWINGS
[0054] For a better understanding of the various described embodiments, reference should be made to the Detailed Description below, in conjunction with the following drawings in which like reference numerals refer to corresponding parts throughout the figures.
[0055] FIG. 1 illustrates a simplified schematic illustration of a communication system;
[0056] FIG. 2 illustrates a block diagram of an example communication system;
[0057] FIG. 3 illustrates example of an apparatus wirelessly communicating with at least one of two apparatuses in a communication system;
[0058] FIG. 4 illustrates a block diagram of an example apparatus;
[0059] FIG. 5 illustrates an example of allocating carriers in one or more frequency bands among different operators;
[0060] FIG. 6 illustrates an example of allocating carriers in one or more frequency bands among different RATs;
[0061] FIG. 7 illustrates an interaction diagram of a method for spectrum sharing, in accordance with some embodiments;
[0062] FIG. 8 illustrates an example of available spectrum allocated to operators or RATs before sharing;
[0063] FIG. 9 illustrates an example of available spectrum allocated to operators or RATs after sharing;
[0064] FIG. 10 illustrates an example of two apparatuses using a virtual CC2 (V-CC2) to perform spectrum sharing on an idle spectrum from V-CC;
[0065] FIG. 11 illustrates an example of two apparatuses using V-CC2 to perform spectrum sharing on an idle spectrum from V-CC1; and
[0066] FIG. 12 illustrates an example apparatus according to an implementation of the present disclosure.DETAILED DESCRIPTION
[0067] Numerous details are described herein to provide a thorough understanding of the example embodiments illustrated in the accompanying drawings. However, some embodiments may be practiced without many of the specific details, and the scope of the claims is only limited by those features and aspects specifically recited in the claims. Furthermore, well-known processes, components, and materials have not necessarily been described in exhaustive detail so as to avoid obscuring pertinent aspects of the embodiments described herein.
[0068] The present disclosure relates generally to wireless communications. Particularly, it relates to a method, apparatus and system for frequency sharing. In the following, specific example embodiments of this disclosure will now be explained.
[0069] In order to facilitate the understanding of embodiments of the present disclosure, network architecture and / or service scenarios are described below. However, it will be understood that the network architecture and / or service scenarios do not constitute a limitation on the technical solutions of the present disclosure.
[0070] Referring to FIG. 1, as an illustrative example without limitation, a simplified schematic illustration of a communication system is provided. The communication system 100 (which may be a wireless system) includes a radio access network 120. The radio access network (RAN) 120 may be a next generation (e.g., future generation or later) radio access network, or a legacy (e.g., 5G, 4G, 3G or 2nd generation (2G) ) radio access network. One or more communication electronic device (ED) 110a, 110b, 110c, 110d, 110e, 110f, 110g, 110h, 110i, 110j (generically referred to as 110) may be interconnected to one another or connected to one or more network nodes (170a, 170b, generically referred to as 170) in the radio access network 120. A core network 130 may be a part of the communication system and may be dependent or independent of the radio access technology used in the communication system 100. The communication system 100 may also include a public switched telephone network (PSTN) 140, the internet 150, and other networks 160.
[0071] In general, the communication system 100 enables multiple wireless or wired elements to communicate data and other content. The communication system 100 may provide content, such as voice, data, video, and / or text, via broadcast, multicast, groupcast, unicast, etc. And the communication system 100 may provide a wide range of communication services and applications (such as earth monitoring, remote sensing, passive sensing and positioning, navigation and tracking, autonomous delivery and mobility, etc. ) The services and / or applications may be mobile broadband (MBB) services, ultra-reliable low-latency communication (URLLC) services, or machine type communication (MTC) services.
[0072] The communication system 100 may operate by sharing resources, such as carrier spectrum bandwidth, between its constituent elements.
[0073] The communication system 100 may include a terrestrial communication system and / or a non-terrestrial communication system. The communication system 100 may provide a high degree of availability and robustness through a joint operation of a terrestrial communication system and a non-terrestrial communication system. For example, integrating a non-terrestrial communication system (or components thereof) into a terrestrial communication system can result in what may be considered a heterogeneous network including multiple layers. The heterogeneous network may achieve better overall performance through efficient multi-link joint operation, more flexible functionality sharing, and faster physical layer link switching between terrestrial networks and non-terrestrial networks.
[0074] The terrestrial communication system and the non-terrestrial communication system could be considered sub-systems of the communication system.
[0075] Same as in the example shown in FIG. 1, in the example shown in FIG. 2, the communication system 100 may include ED 110a, 110b, 110c, 110d (generically referred to as ED 110) , and RAN 120a, 120b. In addition, the communication system 100 may also include a non-terrestrial communication network 120c. The communication system 100 may also include one or more of a core network 130, a public switched telephone network (PSTN) 140, the Internet 150, and other networks 160. The RANs 120a, 120b include respective RAN nodes such as base stations (BSs) 170a, 170b, which may be generically referred to as terrestrial transmit and receive points (T-TRPs) 170a, 170b. In one implementation, the non-terrestrial communication network 120c includes a RAN node such as an access node (or base station) 172, which may be generically referred to as a non-terrestrial transmit and receive point (NT-TRP) 172. As may be surmised on the basis of similarity in reference numerals, the non-terrestrial communication network 120c may be considered to be a radio access network, with operational aspects in common with the RANs 120a, 120b. In another implementation, the non-terrestrial communication network 120c may include at least one non-terrestrial network (NTN) device and at least one corresponding terrestrial network device, where the at least one non-terrestrial network device works as a transport layer device and the at least one corresponding terrestrial network device works as a RAN node, which communicates with the ED via the non-terrestrial network device. In addition, there may be an NTN gateway in the ground (i.e., referred as a terrestrial network device) also as a transport layer device to communication with both the NTN device, and the RAN node communicates with the ED via the NTN device and the NTN gateway. In some implementations, the NTN gateway and the RAN node may be located in the same device.
[0076] Any ED 110 may be alternatively or additionally configured to interface, access, or communicate with any T-TRP 170a, 170b and NT-TRP 172, the Internet 150, the core network 130, the PSTN 140, the other networks 160, or any combination of the preceding. In some examples, ED 110a may communicate an uplink (UL) and / or downlink (DL) transmission over a terrestrial air interface 190a with T-TRP 170a. In some examples, the EDs 110a, 110b, 110c, and 110d may also communicate directly with one another via one or more sidelink (SL) air interfaces 190b. In some examples, ED 110d may communicate an uplink and / or downlink transmission over a non-terrestrial air interface 190c with NT-TRP 172.
[0077] The air interfaces 190a and 190b may use similar communication technology, such as any suitable radio access technology. For example, the communication system 100 may implement one or more channel access methods, such as code division multiple access (CDMA) , space division multiple access (SDMA) , time division multiple access (TDMA) , frequency division multiple access (FDMA) , orthogonal FDMA (OFDMA) , or single-carrier FDMA (SC-FDMA, also known as discrete Fourier transform spread OFDMA, DFT-s-OFDMA) in the air interfaces 190a and 190b. The air interfaces 190a and 190b may utilize other higher dimension signal spaces, which may involve a combination of orthogonal and / or non-orthogonal dimensions.
[0078] The non-terrestrial air interface 190c can enable communication between the ED 110d and one or multiple NT-TRPs 172 via a wireless link or simply a link. For some examples, the link is a dedicated connection for unicast transmission, a connection for broadcast transmission, or a connection between a group of EDs 110 and one or multiple NT-TRPs 172 for multicast transmission.
[0079] The RANs 120a and 120b are in communication with the core network 130 to provide the EDs 110a, 110b, and 110c with various services such as voice, data, and other services. The RANs 120a and 120b and / or the core network 130 may be in direct or indirect communication with one or more other RANs (not shown) , which may or may not be directly served by core network 130, and may or may not employ the same radio access technology as RAN 120a, RAN 120b or both. The core network 130 may also serve as a gateway access between (i) the RANs 120a and 120b or EDs 110a, 110b, and 110c or both, and (ii) other networks (such as the PSTN 140, the Internet 150, and the other networks 160) . In addition, some or all of the EDs 110a, 110b, and 110c may include functionality for communicating with different wireless networks over different wireless links using different wireless technologies and / or protocols. Instead of wireless communication (or in addition thereto) , the EDs 110a, 110b, and 110c may communicate via wired communication channels to a service provider or switch (not shown) , and to the Internet 150. PSTN 140 may include circuit switched telephone networks for providing plain old telephone service (POTS) . Internet 150 may include a network of computers and subnets (intranets) or both, and incorporate protocols, such as Internet Protocol (IP) , Transmission Control Protocol (TCP) , User Datagram Protocol (UDP) . EDs 110a, 110b, and 110c may be multimode devices capable of operation according to multiple radio access technologies, and incorporate multiple transceivers necessary to support such.
[0080] In addition, the communication system 100 may include a sensing agent (not shown in the figure) to manage the sensed data from ED 110 and or the T-TRP 170 and / or NT-TRP 172. In one implementation, the sensing agent is located in the T-TRP 170 and / or NT-TRP 172. In another implementation, the sensing agent is a separate node which has interface to communicate with the core network 130 and / or the RAN 120 (e.g., the T-TRP 170 and / or NT-TRP 172) .
[0081] FIG. 3 illustrates example of an Apparatus 310 wirelessly communicating with at least one of two apparatuses (e.g., Apparatus 320a and Apparatus 320b, referred to as Apparatus 320) in a communication system, e.g., the communication system 100, according to one embodiment. The Apparatus 310 may be a user equipment (UE) (e.g., ED 110 in FIG. 3) . The Apparatus 320a may be a terrestrial network device (e.g., T-TRP 170 as shown in FIG. 3) , and Apparatus 320b may be a non-terrestrial network device (e.g., NT-TRP 172 as shown in FIG. 3) . However, this is not necessary. For example, Apparatus 320a may be a NT-TRP, and Apparatus 320b may be a T-TRP. For example, both Apparatus 320a and 320b may be T-TRPs or NT-TRPs. In the following, the ED 110 as an example of the Apparatus 310 is described, T-TRP 170 as an example of Apparatus 320a is described, and NT-TRP 172 as an example of Apparatus 320b is described. It is noted that although only one Apparatus 310, one Apparatus 320a and one Apparatus 320b are illustrated, the number of Apparatus 310 (e.g. ED 110) could be one or more, and the number of Apparatus 320a and / or 320b could be one or more. For example, one ED 110 may be served by only one T-TRP 170 (or one NT-TRP 172) , by more than one T-TRP 170, by more than one NT-TRP 172, or by one or more T-TRP 170 and one or more NT-TRP 172.
[0082] The ED 110 is used to connect persons, objects, machines, etc. The ED 110 may be widely used in various scenarios including, for example, cellular communications, device-to-device (D2D) , vehicle to everything (V2X) , peer-to-peer (P2P) , machine-to-machine (M2M) , MTC, internet of things (IoT) , virtual reality (VR) , augmented reality (AR) , mixed reality (MR) , metaverse, digital twin, industrial control, self-driving, remote medical, smart grid, smart furniture, smart office, smart wearable, smart transportation, smart city, drones, robots, remote sensing, passive sensing, positioning, navigation and tracking, autonomous delivery and mobility, etc.
[0083] Each ED 110 represents any suitable end user device for wireless operation and may include such devices (or may be referred to but not limited to) as a user equipment / terminal device (UE) , a wireless transmit / receive unit (WTRU) , a mobile station, a fixed or mobile subscriber unit, a cellular telephone, a station (STA) , a MTC device, a personal digital assistant (PDA) , a smartphone, a laptop, a computer, a tablet, a wireless sensor, a consumer electronics device, a smart book, a vehicle, a car, a truck, a bus, a train, or an IoT device, wearable devices (such as a watch, a pair of glasses, head mounted equipment, etc. ) , an industrial device, or an apparatus in (e.g., communication module, modem, or chip) or including the forgoing devices, among other possibilities. Future generation EDs 110 may be referred to using other terms. The base station 170a, 170b is a T-TRP and will hereafter be referred to as T-TRP 170. Also shown in FIG. 3, a non-terrestrial (NT) device will hereafter be referred to as NT-TRP 172. Each ED 110 connected to T-TRP 170 and / or NT-TRP 172 can be dynamically or semi-statically turned-on (i.e., established, activated, or enabled) , turned-off (i.e., released, deactivated, or disabled) and / or configured in response to one of more of: connection availability and connection necessity.
[0084] As shown in FIG. 3, the ED 110 may include at least one processor 210. Only one processor 210 is illustrated to avoid congestion in the drawing. The ED 110 may further include a transmitter 201 and a receiver 203 coupled to one or more antennas 204. Only one antenna 204 is illustrated to avoid congestion in the drawing. One, some, or all of the antennas 204 may alternatively be panels. The transmitter 201 and the receiver 203 may be integrated, e.g., as a transceiver. The transceiver is configured to modulate data or other content for transmission by at least one antenna 204 or network interface controller (NIC) . The transceiver is also configured to demodulate data or other content received by the at least one antenna 204. Each transceiver includes any suitable structure for generating signals for wireless or wired transmission and / or processing signals received wirelessly or by wire. Each antenna 204 includes any suitable structure for transmitting and / or receiving wireless or wired signals. The ED 110 may include at least one memory 208. Only the transmitter 201, receiver 203, processor 210, memory 208, and antenna 204 are illustrated for simplicity, but the ED 110 may include one or more other components.
[0085] The memory 208 stores instructions. The memory 208 may also store data used, generated, or collected by the ED 110. For example, the memory 208 could store software instructions or modules configured to implement some or all of the functionality and / or embodiments described herein and that are executed by one or more processing unit (s) (e.g., a processor 210) . Each memory 208 includes any suitable volatile and / or non-volatile storage and retrieval device (s) . Any suitable type of memory may be used, such as random access memory (RAM) , read only memory (ROM) , hard disk, optical disc, subscriber identity module (SIM) card, memory stick, secure digital (SD) memory card, on-processor cache, and the like.
[0086] The ED 110 may further include one or more input / output devices (not shown) or interfaces (such as a wired interface to the Internet 150 in FIG. 1) . The input / output devices or interfaces permit interaction with a user or other devices in the network. Each input / output device or interface includes any suitable structure for providing information to or receiving information from a user, and / or for network interface communications. Suitable structures include, for example, a speaker, microphone, keypad, keyboard, display, touch screen, etc.
[0087] The processor 210 performs (or controlling the ED 110 to perform) operations described herein as being performed by the ED 110, as illustrated below and elsewhere herein. For example, the processor 210 performs or controls the ED 110 to perform receiving transport blocks (TBs) , using a resource for decoding of one of the received TBs, releasing the resource for decoding of another of the received TBs, and / or receiving configuration information configuring a resource. In details, the operation may include those operations related to preparing a transmission for uplink transmission to the NT-TRP 172 and / or the T-TRP 170; those operations related to processing downlink transmissions received from the NT-TRP 172 and / or the T-TRP 170; and those operations related to processing sidelink transmission to and from another ED 110. Processing operations related to preparing a transmission for uplink transmission may include operations such as encoding, modulating, transmit beamforming, and generating symbols for transmission. Processing operations related to processing downlink transmissions may include operations such as receive beamforming, demodulating and decoding received symbols. Processing operations related to processing sidelink transmissions may include operations such as transmit / receive beamforming, modulating / demodulating and encoding / decoding symbols. Depending upon the embodiment, a downlink transmission may be received by the receiver 203, possibly using receive beamforming, and the processor 210 may extract signaling from the downlink transmission (e.g., by detecting and / or decoding the signaling) . An example of signaling may be a reference signal transmitted by the NT-TRP 172 and / or by the T-TRP 170. In some embodiments, the processor 210 implements the transmit beamforming and / or the receive beamforming based on the indication of beam direction, e.g., beam angle information (BAI) , received from the T-TRP 170. In some embodiments, the processor 210 may perform operations relating to network access (e.g. initial access) and / or downlink synchronization, such as operations relating to detecting a synchronization sequence, decoding and obtaining the system information, etc. In some embodiments, the processor 210 may perform channel estimation, e.g., using a reference signal received from the NT-TRP 172 and / or from the T-TRP 170.
[0088] Although not illustrated, the processor 210 may form part of the transmitter 201 and / or part of the receiver 203. Although not illustrated, the memory 208 may form part of the processor 210.
[0089] The processor 210, the processing components of the transmitter 201, and the processing components of the receiver 203 may each be implemented by the same or different one or more processors that are configured to execute instructions stored in a memory (e.g., in the memory 208) . Alternatively, some or all of the processor 210, the processing components of the transmitter 201, and the processing components of the receiver 203 may each be implemented using dedicated circuitry, such as a programmed field-programmable gate array (FPGA) , an application-specific integrated circuit (ASIC) , or a hardware accelerator such as a graphics processing unit (GPU) or an artificial intelligence (AI) accelerator.
[0090] In some implementations, the ED 110 may refer to an apparatus (also called component) such as, communication module, modem, chip, or chipset, and it includes at least one processor 210, and an interface or at least one pin. In this scenario, the transmitter 201 and receiver 203 may be replaced by the interface or at least one pin, where the interface or at least one pin is to connect the apparatus (e.g., chip) and other apparatus (e.g., chip, memory, or bus) . Accordingly, the transmitting information to the NT-TRP 172 and / or the T-TRP 170 and / or another ED 110 may be referred to as transmitting information to the interface or at least one pin, or as transmitting information to the NT-TRP 172 and / or the T-TRP 170 and / or another ED 110 via the interface or at least one pin, and receiving information from the NT-TRP 172 and / or the T-TRP 170 and / or another ED 110 may be referred to as receiving information from the interface or at least one pin, or as receiving information from the NT-TRP 172 and / or the T-TRP 170 and / or another ED 110 via the interface or at least one pin. The information may include control signaling and / or data.
[0091] As shown in FIG. 3, the T-TRP 170 include at least one processor 260. Only one processor 260 is illustrated to avoid congestion in the drawing. The T-TRP 170 may further include at least one transmitter 252 and at least one receiver 254 coupled to one or more antennas 256. Only one antenna 256 is illustrated to avoid congestion in the drawing. One, some, or all of the antennas 256 may alternatively be panels. The transmitter 252 and the receiver 254 may be integrated as a transceiver. The T-TRP 170 may further include at least one memory 258. The T-TRP 170 may further include scheduler 253. Only the transmitter 252, receiver 254, processor 260, memory 258, antenna 256 and scheduler 253 are illustrated for simplicity, but the T-TRP may include one or more other components.
[0092] The T-TRP 170 may be known by other names in some implementations, such as a base station, a base transceiver station (BTS) , a radio base station, a network node, a network device, a device on the network side, a transmit / receive node, a Node B, an evolved NodeB (eNodeB or eNB) , a Home eNodeB, a next Generation NodeB (gNB) , a transmission point (TP) , a site controller, an access point (AP) , a wireless router, a relay station, a terrestrial node, a terrestrial network device, a terrestrial base station, a base band unit (BBU) , a remote radio unit (RRU) , an active antenna unit (AAU) , a remote radio head (RRH) , a central unit (CU) , a distributed unit (DU) , a positioning node, among other possibilities. The T-TRP 170 may be a macro base station (BS) , a pico BS, a relay node, a donor node, or the like, or combinations thereof. The T-TRP 170 may refer to the forgoing devices or refer to apparatus (e.g., a communication module, a modem, or a chip) in the forgoing devices.
[0093] In some embodiments, the parts of the T-TRP 170 may be distributed. For example, some of the modules of the T-TRP 170 may be located remote from the equipment that houses the antennas 256 for the T-TRP 170, and may be coupled to the equipment that houses the antennas 256 over a communication link (not shown) sometimes known as front haul, such as common public radio interface (CPRI) . Therefore, in some embodiments, the term T-TRP 170 may also refer to modules on the network side that perform processing operations, such as determining the location of the ED 110, resource allocation (scheduling) , message generation, and encoding / decoding, and that are not necessarily part of the equipment that houses the antennas 256 of the T-TRP 170. The modules may also be coupled to other T-TRPs. In some embodiments, the T-TRP 170 may actually be a plurality of T-TRPs that are operating together to serve the ED 110, e.g., through the use of coordinated multipoint transmissions.
[0094] The processor 260 performs operations including those related to: preparing a transmission for downlink transmission to the ED 110, processing an uplink transmission received from the ED 110, preparing a transmission for backhaul transmission to the T-TRP 170 and / or NT-TRP 172, and processing a transmission received over backhaul from the T-TRP 170 and / or NT-TRP 172. Processing operations related to preparing a transmission for downlink or backhaul transmission may include operations such as encoding, modulating, precoding (e.g., multiple input multiple output (MIMO) precoding) , transmit beamforming, and generating symbols for transmission. Processing operations related to processing received transmissions in the uplink or over backhaul may include operations such as receive beamforming, demodulating received symbols, and decoding received symbols. The processor 260 may also perform operations relating to network access (e.g. initial access) and / or downlink synchronization, such as generating the content of synchronization signal blocks (SSBs) , generating the system information, etc. In some embodiments, the processor 260 also generates an indication of beam direction, e.g., BAI, which may be scheduled for transmission by a scheduler 253. The processor 260 performs other network-side processing operations described herein, such as determining the location of the ED 110, determining where to deploy the NT-TRP 172, etc. In some embodiments, the processor 260 may generate signaling, e.g., to configure one or more parameters of the ED 110 and / or one or more parameters of the NT-TRP 172. Any signaling generated by the processor 260 is sent by the transmitter 252.
[0095] The scheduler 253 may be coupled to the processor 260 or integrated in the processor 260. The scheduler 253 may be included within or operated separately from the T-TRP 170. The scheduler 253 may schedule uplink, downlink, sidelink, and / or backhaul transmissions, including issuing scheduling grants and / or configuring scheduling-free (e.g., “configured grant” ) resources.
[0096] The memory 258 is configured to store information, and optionally data. The memory 258 stores instructions and data used, generated, or collected by the T-TRP 170. For example, the memory 258 could store software instructions or modules configured to implement some or all of the functionality and / or embodiments described herein and that are executed by the processor 260.
[0097] Although not illustrated, the processor 260 may form part of the transmitter 252 and / or part of the receiver 254. Also, although not illustrated, the processor 260 may implement the scheduler 253. Although not illustrated, the memory 258 may form part of the processor 260.
[0098] The processor 260, the scheduler 253, the processing components of the transmitter 252, and the processing components of the receiver 254 may each be implemented by the same or different one or more processors that are configured to execute instructions stored in a memory, e.g., in the memory 258. Alternatively, some or all of the processor 260, the scheduler 253, the processing components of the transmitter 252, and the processing components of the receiver 254 may be implemented using dedicated circuitry, such as a programmed FPGA, a hardware accelerator (e.g., a GPU or AI accelerator) , or an ASIC.
[0099] When the T-TRP 170 is an apparatus (also called component) , for example, communication module, modem, chip, or chipset in a device, it includes at least one processor, and an interface or at least one pin. In this scenario, the transmitter 252 and receiver 254 may be replaced by the interface or at least one pin, where the interface or at least one pin is to connect the apparatus (e.g., chip) and other apparatus (e.g., chip, memory, or bus) . Accordingly, the transmitting information to the NT-TRP 172 and / or the T-TRP 170 and / or ED 110 may be referred to as transmitting information to the interface or at least one pin, and receiving information from the NT-TRP 172 and / or the T-TRP 170 and / or ED 110 may be referred to as receiving information from the interface or at least one pin. The information may include control signaling and / or data.
[0100] Although the NT-TRP 172 is illustrated as a drone only as an example, the NT-TRP 172 may be implemented in any suitable non-terrestrial form, such as satellites and high altitude platforms, including international mobile telecommunication base stations and unmanned aerial vehicles, for example. Also, the NT-TRP 172 may be known by other names in some implementations, such as a non-terrestrial node, a non-terrestrial network device, or a non-terrestrial base station.
[0101] As shown in FIG. 3, The T-TRP 170 may further include at least one transmitter 252 and at least one receiver 254 coupled to one or more antennas 256. Only one antenna 256 is illustrated to avoid congestion in the drawing. One, some, or all of the antennas 256 may alternatively be panels. The transmitter 252 and the receiver 254 may be integrated as a transceiver. The T-TRP 170 may further include at least one memory 258. The T-TRP 170 may further include scheduler 253. Only the transmitter 252, receiver 254, processor 260, memory 258, antenna 256 and scheduler 253 are illustrated for simplicity, but the T-TRP may include one or more other components.
[0102] As shown in FIG. 3, the NT-TRP 172 include at least one processor 276. Only one processor 276 is illustrated to avoid congestion in the drawing. The NT-TRP 172 may include a transmitter 272 and a receiver 274 coupled to one or more antennas 280. Only one antenna 280 is illustrated to avoid congestion in the drawing. One, some, or all of the antennas may alternatively be panels. The transmitter 272 and the receiver 274 may be integrated as a transceiver. The NT-TRP 172 may further include at least one memory 278. The NT-TRP 172 may further include scheduler. Only the transmitter 272, receiver 274, processor 276, memory 278, antenna 280 are illustrated for simplicity, but the NT-TRP may include one or more other components.
[0103] The NT-TRP 172 include a processor 276 for performing operations including those related to: preparing a transmission for downlink transmission to the ED 110, processing an uplink transmission received from the ED 110, preparing a transmission for backhaul transmission to T-TRP 170 and / or another NT-TRP 172, and processing a transmission received over backhaul from the T-TRP 170 and / or another NT-TRP 172. Processing operations related to preparing a transmission for downlink or backhaul transmission may include operations such as encoding, modulating, precoding (e.g., MIMO precoding) , transmit beamforming, and generating symbols for transmission. Processing operations related to processing received transmissions in the uplink or over backhaul may include operations such as receive beamforming, demodulating received symbols, and decoding received symbols. In some embodiments, the processor 276 implements the transmit beamforming and / or receive beamforming based on beam direction information (e.g., BAI) received from the T-TRP 170. In some embodiments, the processor 276 may generate signaling, e.g., to configure one or more parameters of the ED 110. In some embodiments, the NT-TRP 172 implements physical layer processing, but does not implement higher layer functions such as functions at the medium access control (MAC) or radio link control (RLC) layer. As this is only an example, more generally, the NT-TRP 172 may implement higher layer functions in addition to physical layer processing.
[0104] The memory 278 is configured to store information and optionally data. The memory 258 stores instructions and data used, generated, or collected by the NT-TRP 172. For example, the memory 278 could store software instructions or modules configured to implement some or all of the functionality and / or embodiments described herein and that are executed by the processor 276.
[0105] Although not illustrated, the processor 276 may form part of the transmitter 272 and / or part of the receiver 274. Although not illustrated, the memory 278 may form part of the processor 276.
[0106] The processor 276, the processing components of the transmitter 272, and the processing components of the receiver 274 may each be implemented by the same or different one or more processors that are configured to execute instructions stored in a memory, e.g., in the memory 278. Alternatively, some or all of the processor 276, the processing components of the transmitter 272, and the processing components of the receiver 274 may be implemented using dedicated circuitry, such as a programmed FPGA, a hardware accelerator (e.g., a GPU or AI accelerator) , or an ASIC. In some embodiments, the NT-TRP 172 may actually be a plurality of NT-TRPs that are operating together to serve the ED 110, e.g., through coordinated multipoint transmissions.
[0107] When the NT-TRP 172 is an apparatus (e.g., communication module, modem, chip, or chipset) in a device, it includes at least one processor, and an interface or at least one pin. In this scenario, the transmitter 272 and receiver 257 may be replaced by the interface or at least one pin, where the interface or at least one pin is to connect the apparatus (e.g., chip) and other apparatus (e.g., chip, memory, or bus) . Accordingly, the transmitting information to the T-TRP 170 and / or another NT-TRP 172 and / or ED 110 may be referred to as transmitting information to the interface or at least one pin, and receiving information from the T-TRP 170 and / or another NT-TRP 172 and / or ED 110 may be referred to as receiving information from the interface or at least one pin. The information may include control signaling and / or data.
[0108] Note that “transmit / receive point (TRP) ” , as used herein, may refer to a T-TRP or a NT-TRP. A T-TRP may alternatively be called a terrestrial network TRP ( “TN TRP” ) and a NT-TRP may alternatively be called a non-terrestrial network TRP ( “NTN TRP” ) . The T-TRP 170, the NT-TRP 172, and / or the ED 110 may include other components, but these have been omitted for the sake of clarity.
[0109] Note that “signaling” , as used herein, may alternatively be called control signaling, control message, control information, or message for simplicity. Signaling between a BS (e.g., the network node 170) and a terminal or sensing device (e.g., ED 110) , or signaling between different terminal or sensing devices (e.g., between ED 110i and ED 110j) may be carried in physical layer signaling (also called dynamic signaling) , which is transmitted in a physical layer control channel. For downlink, the physical layer signaling may be known as downlink control information (DCI) which is transmitted in a physical downlink control channel (PDCCH) . For uplink, the physical layer signaling may be known as uplink control information (UCI) which is transmitted in a physical uplink control channel (PUCCH) . For sidelink, signaling between different terminal or sensing devices (e.g., between ED 110i and ED 110j) may be known as sidelink control information (SCI) which is transmitted in a physical sidelink control channel (PSCCH) . Signaling may be carried in a higher-layer (e.g., higher than physical layer) signaling, which is transmitted in a physical layer data channel, e.g., in a physical downlink shared channel (PDSCH) for downlink signaling, in a physical uplink shared channel (PUSCH) for uplink signaling, and in a physical sidelink shared channel (PSSCH) for sidelink signaling. Higher-layer signaling may also be called static signaling, or semi-static signaling. Higher-layer signaling may be radio resource control (RRC) protocol signaling or media access control - control element (MAC-CE) signaling. Signaling may be included in a combination of physical layer signaling and higher layer signaling.
[0110] It should be noted that, “information” described herein, when different from “message” , may be carried in one single message, or be carried in more than one separate message.
[0111] One or more steps of the methods provided in embodiments of the present disclosure may be performed by corresponding units or modules, according to FIG. 4. FIG. 4 illustrates units or modules in a device or apparatus, such as in the ED 110, in the T-TRP 170, or in the NT-TRP 172. For example, a signal may be transmitted by a transmitting unit or by a transmitting module. A signal may be received by a receiving unit or by a receiving module. A signal may be processed by a processing unit or a processing module. Other steps may be performed by an artificial intelligence (AI) or machine learning (ML) module. The respective units or modules may be implemented using hardware, one or more components or devices that execute software, or a combination thereof. For example, one or more of the units or modules may each be a circuit such as an integrated circuit. Examples of an integrated circuit include a programmed FPGA, a GPU, or an ASIC. For example, one or more of the units or modules may each be logical such as a logical function performed by a circuit, by a portion of an integrated circuit, or by software instructions executed by a processor. It will be appreciated that the modules are implemented using software for execution by a processor for example, the modules may be retrieved by a processor, in whole or part as needed, individually or together for processing, in single or multiple instances, and that the modules themselves may include instructions for further deployment and instantiation.
[0112] Additional details regarding the EDs 110, the T-TRP 170, and the NT-TRP 172 are known to those of skill in the art. As such, these details are omitted here.
[0113] Embodiments of the present disclosure are aimed at devices such as UEs, IoT devices, cars, etc. The type of network scenarios envisioned may include terrestrial TRPs such as base-stations and / or non-terrestrial TRPs such as drones, balloons, high-altitude platform stations (HAPS) , satellites, and any such devices that support radio access technologies such as 5G NR, future generation or other technologies.
[0114] For illustrative purposes, specific example embodiments will now be explained in greater detail in conjunction with the figures and above mentioned system, ED and TRP.
[0115] The embodiments set forth herein represent information sufficient to practice the claimed subject matter and illustrate ways of practicing such subject matter. Upon reading the following description in light of the accompanying figures, those of skill in the art will understand the concepts of the claimed subject matter and will recognize applications of these concepts not particularly addressed herein. It should be understood that these concepts and applications fall within the scope of the disclosure and the accompanying claims.
[0116] It could be noted that the message herein could be replaced with information, which may be carried in one single message, or be carried in more than one separate message.
[0117] Without special noting, the terms “apparatus” and “device” are used exchangeable, and the terms “identity” and “identifier” are used exchangeable.
[0118] The word “a” or “an” as used herein when used in conjunction with the term “comprising” or “including” in the claims and / or the specification may mean “one” , but it is also consistent with the meaning of “one or more” , “at least one” , and “one or more than one” unless the content clearly dictates otherwise. Similarly, the word “another” may mean at least a second or more unless the content clearly dictates otherwise.
[0119] The words “first” , “second” , etc., as used herein, when used before a same term (e.g., ED, or an operating step) does not mean an order or a sequence of the term. For example, the “first ED” and the “second ED” , mean two different EDs without specially indicated, and similarly, the “first step” and the “second step” mean two different operating steps without specially indicated, but do not mean the first step have to happen before the second step. The real order depends on the logic of the two steps.
[0120] The terms “coupled” , “coupling” or “connected” as used herein can have several different meanings depending on the context in which these terms are used. For example, as used herein, the terms “coupled” , “coupling” , or “connected” can indicate that two elements or devices are directly connected to one another or connected to one another through one or more intermediate elements or devices via a mechanical element depending on the particular context.
[0121] Note that the expression “at least one of A or B” , as used herein, is interchangeable with the expression “Aand / or B” . It refers to a list in which you may select A or B or both A and B. Similarly, “at least one of A, B, or C” , as used herein, is interchangeable with “A and / or B and / or C” or “A, B, and / or C” . It refers to a list in which you may select: A or B or C, or both A and B, or both A and C, or both B and C, or all of A, B and C. The same principle applies for longer lists having a same format.
[0122] The term “receive” , “detect” and “decode” as used herein can have several different meanings depending on the context in which these terms are used. For example, without special note, the term “receive” may indicate that information (e.g., DCI, or MAC-CE, RRC signaling or TB) is received successfully by the receiving node, which means the receiving side correctly detect and decode it. In this scenario, “receive” may cover “detect” and “decode” or may indicates same thing, e.g., “receive paging” means decoding paging correctly and obtaining the paging successfully, and accordingly, “the receiving side does not receive paging” means the receiving side does not detect and / or decoding the paging. The expression “paging is not received” means the receiving side tries to detect and / or decoding the paging, but not obtain the paging successfully. The term “receive” may sometimes indicate that a signal arrives at the receiving side, but does not mean the information in the signal is detected and decoded correctly, then the receiving side need perform detecting and decoding on the signal to obtain the information carried in the signal. In this scenario, “receive” , “detect” and “decode” may indicate different procedure at receiving side to obtain the information.
[0123] Wireless communications system such as fourth generation (4G) system (for example, Long-Term Evolution (LTE) system) , fifth generation (5G) system (for example, New Radio (NR) system) have been deployed to provide various types of applications, such as message, voice, video and other data.
[0124] In wireless communications, spectrum resource is scarce and very expensive to use. Available spectrum may include multiple frequency bands from low frequency bands to high frequency bands. The spectrum used in long term evolution (LTE) and new radio (NR) includes various frequency bands or / and various carriers (also called carrier components) in frequency band.
[0125] In wireless communications, various frequency bands or / and various carriers in frequency band will be used. These frequency bands may include:
[0126] -low frequency bands (Sub-6 GHz) , also known as frequency range 1 (FR1) : Primarily used for coverage and capacity.
[0127] -high frequency bands (Above 6 GHz) , also known as FR2, which includes frequency bands from 24.25 GHz to 71.0 GHz: Suitable for high data rates but with limited coverage.
[0128] -upper mid-band from 7 GHz to 24 GHz, also known as FR3: Balancing coverage and capacity. This is future generation intended frequency bands and these bands are expected to balance coverage, capacity, and deployment for typical scenarios, offering strong benefits when considering new trends such as non-terrestrial network (NTN) , reconfigurable intelligent surface (RIS) , and integrated sensing and communications (ISAC) .
[0129] In some implementations, a static spectrum allocation scheme among different operators and / or radio access technologies (RATs) may be used.
[0130] In addition, to avoid signal interference or leakage, guard bands are required between adjacent carriers used by different operators or RATs in the same or different operator such as 4G, 5G, a future generation, etc., or even within the same operators with same RAT.
[0131] For example, FIG. 5 illustrates an example of allocating carriers in one or more frequency bands among different operators, and FIG. 6 illustrates an example of allocating carriers in one or more frequency bands among different RATs. As shown in FIG. 5 (for carriers of different operators) and FIG. 6 (for carriers of different RATs) , three carriers (also called carrier components (CCs) , i.e., Carrier 1, Carrier 2 and Carrier 3) in one or more frequency bands may be allocated among three different operators or RATs in the same or different operator, where the guard band 1 is provided between Carrier 1 and Carrier 2 and the guard band 2 is provided between Carrier 2 and Carrier 3 in frequency domain to avoid mutual signal interference or leakage between two neighboring carriers.
[0132] The width of a guard band (also known as a guard frequency or guard channel) between two carriers depends on various factors, including the specific frequency band, subcarrier spacing, and regulatory requirements. For example, an LTE channel having a total bandwidth of 20 MHz may have a guard band around 1 MHz on each side (approximately 5%of the total bandwidth) , and a NR channel may have a guard band associated with frequency band and numerology with reduced size of a guard band between carriers or between carrier components in frequency band. Therefore, guard bands between two neighbor carriers are non-negligible.
[0133] Given the spectrum allocation among different operators or RATs in the same or different operators, if the spectrum (i.e., a carrier) for each operator or RAT in an operator is used without any spectrum sharing, it may lead to inefficient spectrum usage overall. This is because since traffic in different operators or RATs in the same or different operators may vary in loading or requirements, an operator or RAT in an operator may have unoccupied spectrum but another operator or RAT in an operator may not have enough spectrum to support its traffic. The above spectrum allocation scheme and usage may lead to low spectrum usage efficiency.
[0134] For ease of understanding, the technical terms in the embodiments of the present disclosure are explained below.
[0135] Available spectrum or frequency resources may be allocated to an operator or RAT in the operator. The available spectrum or frequency resources of the operator or the RAT in the operator may be pre-defined or configured as a "Carrier or carrier component (CC) " . The operator may have communication devices which perform functions based on RATs. A communication device (e.g., base station (BS) ) may communication with another communication device (e.g., user equipment (UE) ) in the carrier or CC. Without special noting, as used herein, the terms “carrier” and “carrier component (CC) ” are interchangeable. In addition, the carrier or CC may also be referred to as virtual carrier or virtual carrier component (V-CC or VCC) . A carrier may include one or more subcarrier.
[0136] A shared spectrum may be a block of frequency resources, and the block of frequency resources may be represented in terms of number of resource blocks (RBs) , where each RB consists of, e.g., 12 frequency elements (REs) and one RE is also referred to as a subcarrier. A first CC may use the shared spectrum from second CC together with its own spectrum (also called original spectrum) as integral frequency resources for single carrier like operation, which means that a scheduling message such as DCI may be used to indicate or allocate all or part of the integral frequency resources without any limitation and a single signal processing such as FT operation over the all or part of the integral frequency resources may be supported. Upon signal processing such as FT operation, frequency resources may be often called in terms of “subcarriers” , and thus a block of subcarriers may represent a group of frequency resources (i.e., all or part of the integral frequency resources) for the signal processing such as FT operation in this disclosure.
[0137] In order to perform spectrum sharing, a possible implementation is provided, which may use an original spectrum of a first CC of an operator or a RAT in the operator and a shared spectrum shared from a second CC of another operator or RAT in the another operator or RAT in yet another operator (which may also be called second CC) as a single virtual carrier or virtual CC (V-CC or VCC) . It will be understood that the original spectrum of the first CC may be a spectrum pre-defined or configured into the first CC before spectrum sharing.
[0138] Embodiments of the present disclosure provide a method for spectrum sharing, which performs spectrum sharing by using an original spectrum and a shared spectrum shared from the second CC as a single virtual carrier or V-CC. The method may enhance the spectrum usage efficiency, and reduce the implementation complexity. In other words, a method on spectrum sharing with single virtual carrier (also called virtual carrier component) is provided in the embodiments of the present disclosure, to enhance spectrum usage efficiency. In the method, the spectrum allocation among different operators or RATs in the same or different operators may be improved by dynamically or adaptively sharing spectrum among the different operators or RATs, in a way of virtual carrier or carrier component (CC) , described below. The method may also reduce the implementation complexity.
[0139] In the following description, the method of performing spectrum sharing will be described in detail.
[0140] For ease of the understanding, a first communication device and a second communication device are introduced to illustrate the following method embodiments. The first communication device and the second communication device are included in the communication system described above. For example, in a downlink or uplink transmission scenario, the first communication device may be a base station (BS) or a network (NW) device and the second communication device may be a user equipment (UE) . In a sidelink transmission, the first communication device may be a UE and the second communication device may be another UE. The first communication device and the second communication device may also be any other device.
[0141] FIG. 7 illustrates an interaction diagram of a method for spectrum sharing, in accordance with some embodiments. In some implementations, as shown in FIG. 7, the method for spectrum sharing may include following steps. Although this disclosure describes and illustrates particular steps of the method of FIG. 7 as occurring in a particular order, this disclosure contemplates any suitable steps of the method of FIG. 7 occurring in any suitable order. Moreover, although this disclosure describes and illustrates an example method for spectrum sharing including the particular steps of the method of FIG. 7, this disclosure contemplates any suitable method for spectrum sharing including any suitable steps, which may include all, some, or none of the steps of the method of FIG. 7, where appropriate. Furthermore, it is noted that although the following step is numbered 1, it is not necessarily the actual first step, but is simply referred to as step 1 for descriptive convenience. The other steps are the same.
[0142] In step 1, a first communication device transmits first information for indicating one or more first parameters. Accordingly, a second communication device receives the first information.
[0143] The one or more first parameters may include at least one of: channel bandwidth of a first carrier component (CC) , one or more frequency resource locations of the first CC, frequency resource indexing scheme, numerology, a size of Fourier Transformation (FT) , or a guard band.
[0144] The channel bandwidth of the first CC may indicate at least one of: bandwidth information of the first CC in terms of e.g., the number of RBs or RB groups (RBGs) , or bandwidth identity of the first CC. The bandwidth information and the bandwidth identity may be determined based on a spectrum or frequency resources configured into the first CC. The bandwidth information may indicate information of the channel bandwidth of the first CC, such as a width of the channel bandwidth of the first CC, a staring frequency location of the channel bandwidth of the first CC, a center frequency location of the channel bandwidth of the first CC, etc. The bandwidth identity may indicate an identity of the channel bandwidth of the first CC.
[0145] The one or more frequency resource locations of the first CC may indicate the location of the frequency resource included in the first CC. For example, the one or more frequency resource locations of the first CC may include an absolute start frequency element or an absolute start frequency RB, or relative start frequency element or relative start RB using one frequency reference point; the one or more frequency resource locations of the first CC may include the number of RBs or RBGs in the first CC.
[0146] The frequency resource indexing scheme may indicate an index of frequency resources included in the first CC. For example, the index of frequency resources may be an index for a RB, or a RGBs in the first CC, e.g., starting from the first (lowest frequency) RB in the first CC, an index is 0, 1, …, N-1, where there are N RBs in the first CC. Alternatively, the frequency resource indexing may also be performed in terms of subcarriers in the first CC. As a result, as long as the first CC gets additional spectrum for an available usage, for example, a shared spectrum from a second CC, the first CC with more frequency resources may need to re-index its all available frequency resources in order for effective resource scheduling for communication, and UEs in operation with the first CC may be informed or configured any of the frequency resource indexing schemes. As another example, in other application scenarios (e.g., a next spectrum sharing) , the first CC with more or less frequency resources may also need to re-index its all available frequency resources in order for effective resource scheduling for communication, and UEs in operation with the first CC may be informed or configured any of the frequency resource indexing schemes.
[0147] The numerology may include a subcarrier spacing of the first CC, and the subcarrier spacing of the first CC may be a product of 15 kHz and 2m, where m may be an integer. For example, m may be an integer greater than or equal to -2, such as -2, -1, 0, 1, 2, 3 or 4. For example, the subcarrier spacing of the first CC may be 3.75 kHz, 7.5 kHz, 15 kHz, 30 kHz, 60 kHz, 120 kHz, 240 kHz, 480 kHz, 960 kHz, or another integer multiple of 15 kHz. Of course, m may also be an integer less than -2, for example, -3, -4, etc.
[0148] In some implementations, FT is Fast Fourier Transformation (FFT) , Inverse Fast Fourier Transform (IFFT) , Discrete Fourier Transform (DFT) , or Inverse Discrete Fourier Transform (IDFT) .
[0149] In some implementations, a size of FT is a product of 1024 and 2n, where n is an integer. For example, n may be an integer greater than or equal to -2, such as -2, -1, 0, 1, 2, 3 or 4. For example, the size of FT may be 256, 512, 1024, 2048, 4096, 8192, 16384, etc. Of course, n may also be an integer less than -2, for example, -3, -4, etc.
[0150] The guard band may be between adjacent subcarriers.
[0151] The one or more first parameters may be parameters of a first CC after spectrum sharing, and the one or more first parameters may be determined based on spectrum or frequency resources after spectrum sharing included in the first CC.
[0152] The following describe an example of step 1. In this example, the first CC before spectrum sharing is also referred to as a first virtual CC, and the first CC after spectrum sharing is also referred to as an adjusted first virtual CC.
[0153] For example, the base station transmits first information indicating adjustment of the first virtual CC. Accordingly, the UE receives the first information. The UE communicates with the base station on the resources within the updated virtual CC according to the first information.
[0154] For example, the first information may indicate one or more parameters of the adjusted first virtual CC, which may include at least updated bandwidth information (for example the bandwidth and the starting / center frequency location) , bandwidth identity, FFT size, cyclic prefix, numerology, spectrum adjustment information, or a grace period for the application of the adjusted first virtual CC, etc. That is, parameters associated with a (channel or transmission) bandwidth may be (re) configured or updated for UEs in the V-CC1 cell, where the parameters may include at least one of: updated bandwidth information (for example the bandwidth and the starting / center frequency location) , updated bandwidth identity, updated FFT size, updated cyclic prefix, updated numerology, spectrum adjustment information, or a grace period for the application of the adjusted first virtual CC, etc; moreover or alternatively, resource blocks for scheduling may optionally need to be re-indexed based on the bandwidth information, applied numerology, FFT size, etc. In one possible implementation, the grace period in the parameters is used as a time window between the bandwidth (re) configuration / update message and starting to apply transmissions with the bandwidth.
[0155] Please note that the first information may indicate which of the swap and shift is used for the virtual adjustment of spectrum sharing, which is the configured / indicated parameter of spectrum adjustment information.
[0156] In some embodiments, the first information may be carried via any one of radio resource control (RRC) signaling / media access control (MAC) / media access control-control element (MAC-CE) / downlink control information (DCI) signaling or any combination thereof. That is, a signaling on (re) configuring the parameters associated with a (channel or transmission) bandwidth is sent to UEs in the V-CC1 cell, where the signaling can be made in a semi-static way via higher-layer signaling such as Radio Resource Control (RRC) signaling, Medium Access Control-Control Element (MAC-CE) , or in a dynamic way such via downlink control information (DCI) .
[0157] In some embodiments, a signaling to carry out the first information from the first communication device (e.g., a base station) in the virtual CC cell can be system information (such as synchronization signal block (SSB) , system information block 1 (SIB1) or the other SIBs) , cell-common signaling, group common signaling, or second communication device (e.g., UE) specific signaling.
[0158] Upon the operator or RAT in operator with the first virtual CC being allowed for sharing a portion of spectrum from another virtual CC, the first virtual CC may take the portion of spectrum and its spectrum as one single resource block to use, and thus a reconfiguration of an updated spectrum for the first virtual CC may be provided to UEs in its cell.
[0159] After the channel bandwidth is configured into the first CC, when the first communication device and the second communication device need to communication with each other using frequency resources within the channel bandwidth, the first communication device may schedule the second communication device.
[0160] In step 2, the first communication device transmits second information for indicating one or more frequency resources for communication based on the first information. Accordingly, the second communication device receives the second information.
[0161] For example, the second communication device communicates with the first communication device on the frequency resources included in the first CC according to the second information. For example, the UE communicates with the base station on the frequency resources within the first virtual CC according to the second information.
[0162] In some implementations, the communication may include at least one of DL or UL transmission. That is, the second communication device transmits data to and / or receives data from the first communication device according to frequency resources included in the first CC indicated by the second information, and correspondingly, the first communication device receives data from and / or transmits data to the second communication device according to frequency resources included in the CC indicated by the second information.
[0163] In some implementations, the one or more frequency resources in the first CC allocated for communication are used for performing single FT process. For example, the second communication device may use the one or more frequency resources included in the first CC for communication to perform the single virtual CC operation, and the single virtual CC operation may include resource scheduling, FFT operation or other control operation.
[0164] In the method provided in the present disclosure, the channel bandwidth of the first CC, the frequency resource locations of the first CC, FT and other first parameters are configurable parameters, so that the spectrum bandwidth of the first CC may be changed dynamically. In the practical application scene, the first parameters may be dynamically configured, thus enhancing the spectrum usage efficiency, and reducing the implementation complexity.
[0165] In some implementations, before spectrum sharing, an original configuration may be provided. In this case, in some implementations, before step 1, the method for spectrum sharing further includes step 3.
[0166] In step 3, the first communication device transmits third information for indicating one or more second parameters. Accordingly, the second communication device receives the third information.
[0167] The one or more second parameters may be parameters of the first CC before spectrum sharing. And the one or more second parameters may be determined based on the spectrum or frequency resources pre-defined or configured into the CC before spectrum sharing. The one or more second parameters include at least one of: another channel bandwidth of the first CC, one or more another frequency resource locations of the first CC, another frequency resource indexing scheme, another numerology, another size of FT, or another guard band, where the one or more second parameters and the one or more first parameters have at least one same parameter with different values.
[0168] In some implementations, the another channel bandwidth of the first CC may indicate at least one of: another bandwidth information of the first CC or another bandwidth identity of the first CC. A value of the another channel bandwidth and the value of the channel bandwidth may be the same or different. The another bandwidth information may indicate information of the another channel bandwidth of the first CC, for examples, a width of the another channel bandwidth of the first CC, a staring frequency location of the another channel bandwidth of the first CC, a center frequency location of the another channel bandwidth of the first CC, etc. The another bandwidth identity may indicate an identity of the another channel bandwidth of the first CC.
[0169] The one or more another frequency resource locations of the first CC may indicate a location of the another frequency resource of the first CC. Values of the another frequency resource locations and values of the frequency resource locations may be the same or different.
[0170] The another frequency resource indexing scheme may indicate an index of the another frequency resource of the first CC. A value of the another frequency resource indexing scheme and a value of the frequency resource indexing scheme may be the same and different.
[0171] The another numerology may include another subcarrier spacing of the first CC, and the another subcarrier spacing of the first CC may be a product of 15 kHz and 2m, where m may be an integer. For example, m may be an integer greater than or equal to -2, such as -2, -1, 0, 1, 2, 3 or 4. For example, the another subcarrier spacing of the first CC may be 3.75 kHz, 7.5 kHz, 15 kHz, 30 kHz, 60 kHz, 120 kHz, 240 kHz, 480 kHz, 960 kHz, or other integer multiple of 15 kHz. Of course, m may also be an integer less than -2, for example, -3, -4, etc. A value of the another numerology and a value of the numerology may be the same or different.
[0172] In some embodiments, An another size of FT is a product of 1024 and 2n, where n is an integer. For example, n may be greater than or equal to -2, such as -2, -1, 0, 1, 2, 3 or 4. For example, the another size of FT may be any one of 256, 512, 1024, 2048, 4096, 8192, 16384, etc. Of course, n may also be an integer less than -2, for example, -3, -4, etc. A value of the another size of FT and a value of the size of FT may be the same or different.
[0173] The another guard band may be between adjacent subcarriers.
[0174] In some examples, a value of the another guard band and a value of the guard band may be the same or different.
[0175] It will be understood that the one or more second parameters and the one or more first parameters have at least one same parameter with different values.
[0176] The following describes an example of step 3. For example, a base station transmits third information indicating one or more second parameters of a first virtual CC. Accordingly, the UE receives the third information.
[0177] For example, the one or more second parameters of the first virtual CC may include at least one of: bandwidth information (for example the bandwidth and the starting / center frequency location) , bandwidth identity, FFT size, cyclic prefix, numerology, etc.
[0178] In some embodiments, the third information may be carried via any one of RRC signaling / MAC / MAC-CE / DCI signaling or any combination thereof. That is, a signaling on (re) configuring the parameters associated with a (channel or transmission) bandwidth is sent to UEs in the V-CC1 cell, where the signaling can be made in a semi-static way via higher-layer signaling such as Radio Resource Control (RRC) signaling, Medium Access Control-Control Element (MAC-CE) , or in a dynamic way such via downlink control information (DCI) .
[0179] In some embodiments, a signaling to carry out the third information from a first communication device (e.g., base station) in the first virtual CC cell can be system information message (such as SSB, SIB1 or the other SIBs) , cell-common signaling, group common signaling, or second communication device (e.g., UE) specific signaling.
[0180] After the another channel bandwidth is allocated to the first CC, when the first communication device and the second communication device need to communication with each other using another frequency resources within the another channel bandwidth, the first communication device may reschedule the second communication device.
[0181] In step 4, the first communication device transmits fourth information for indicating one or more another frequency resources for communication based on the third information. Accordingly, the second communication device receives the fourth information.
[0182] For example, the second communication device communicates with the first communication device on the another frequency resources within the first CC according to the fourth information.
[0183] For example, the base station transmits fourth information for indicating one or more another frequency resources for communication based on the third information. Accordingly, the UE receives the fourth information.
[0184] In some implementations, the communication may include at least one of DL or UL transmission. That is, the second communication device transmits data to and / or receives data from the first communication device according to the another frequency resources within the first CC indicated by the fourth information. Accordingly, the first communication device receives data from and / or transmits data to the second communication device according to the another frequency resources with the first CC indicated by the fourth information.
[0185] In some implementations, the one or more another frequency resources in the first CC allocated for communication are used for performing single FT process. For example, the second communication device may use the one or more another frequency resources included in the first CC allocated for communication to perform the virtual single CC operation, and the virtual single CC operation may include resource scheduling, FFT operation or other control operation.
[0186] The method of sharing spectrum is described below in detail based on the first information including the one or more first parameters in combination with FIGS. 8 to 11. It will be noted that the description is also applicable to the third information including the one or more second parameters. However, for the sake of simplicity, they are not repeated herein.
[0187] In some implementations, a spectrum of the first CC may include an original spectrum of the first CC and a shared spectrum shared from the second CC.
[0188] It will be noted that, as described above, the original spectrum may be the spectrum pre-defined or configured as the first CC before spectrum sharing. The second CC may be any CC of another operator, another RAT in the operator with the first virtual CC, or a RAT in the another operator.
[0189] For example, subcarriers of the first CC include a block of subcarriers, and the block of subcarriers include original subcarriers of the first CC and subcarriers shared from second CC (e.g., a second virtual CC, etc. ) ; or frequency sources of the first CC includes original frequency resources of the first CC and a block of frequency resources shared from the second CC (e.g., the second virtual CC, etc. ) .
[0190] It will be noted that, as described above, the original subcarriers may be subcarriers pre-defined or configured as the first CC before spectrum sharing. The original frequency resources may be frequency resources pre-defined or configured as the first CC before spectrum sharing.
[0191] In some implementations, the block of subcarriers may be used for signal processing; or the block of frequency resources shared from the second CC and the original frequency resources of the first CC may be used as single virtual CC resources.
[0192] In other words, the block of subcarriers may be a part of the whole subcarriers of the first CC in the integral frequency resources; or the block of frequency resources may be the whole frequency resources (also called integral frequency resources) of the first CC. The whole subcarriers of the first CC may include the original subcarriers and subcarriers shared from the second CC, and the whole frequency resources of the first CC may include the original frequency resources and the block of frequency resources herein.
[0193] The following describes available spectra allocated to operators or RATs before spectrum sharing and after spectrum sharing in combination with FIGS. 8 and 9.
[0194] Available spectrum allocated to different operators or RATs may be considered with spectrum sharing upon traffic and service demand. The available spectrum can be pre-defined or configured into virtual carrier components (CCs) , one for each operator or RAT, where a bandwidth of each virtual CC can be adjusted adaptively based spectrum usage demand and spectrum sharing scenarios.
[0195] FIG. 8 illustrates an example of available spectrum allocated to operators or RATs before sharing. As shown in FIG. 8, the available spectrum allocated to each of three operators or RATs in one or more frequency bands is considered in usage as single virtual CC. It is noted that such a scheme may enhance the spectrum usage efficiency by removing or reducing size of the guard bands in FIG. 5 and FIG. 6, based on factors, e.g., center frequency of virtual CC, frequency band, numerology, etc. In FIG. 8, the available spectrum divided into equal portions for three CCs of the operator or RAT, respectively, where each virtual CC with its allocated (channel or transmission) bandwidth may support OFDM signal processing with (maximum) FFT or IFFT size based on a radio frequency (RF) bandwidth (e.g., for signal filtering and RF processing, that supports signals transmitted in its allocated bandwidth) .
[0196] To reduce cost and increase spectrum (usage) efficiency, operators or RATs can share spectrum, where un-occupied spectrum in one operator or RAT may be used by another operator or RAT; one scheme, for example, the un-occupied spectrum or a portion of spectrum in the second CC (e.g., CC1) of an operator or RAT can be re-allocated or reconfigured to the first CC (e.g., CC2, with a need of spectrum) of another operator or RAT for usage; this additional spectrum (e.g., the un-occupied spectrum) may be used (e.g., in CC2) by scheduling with a direct usage (e.g., spectrum in CC1) , multi-CC (e.g., CC1, CC2) carrier aggregation or dual connectivity.
[0197] A few carrier scenarios are considered. In one scenario, CC1, CC2 and CC3 are intra-band contiguous carriers, where CC1, CC2 and CC3 are within the same frequency band and are adjacent to each other. In another scenario, CC1, CC2 and CC3 are intra-band non-contiguous carriers, where CC1, CC2 and CC3 are within the same frequency band and there is a spectrum gap or guard band between two neighboring CCs among them. In other examples, CC1, CC2 and CC3 are inter-band non-contiguous carriers, where CC1, CC2 and CC3 are in different frequency bands and there is a spectrum gap or guard band between two neighboring CCs among them.
[0198] In this disclosure, true single carrier like dynamical spectrum sharing is proposed. A bandwidth of a virtual CC (V-CC) is adjustable or configurable upon demand, e.g., based on operation time (e.g., day time, night time, etc. ) , traffic loading, traffic type, service type, traffic balances among operators, or / and power saving mode, etc., which makes the spectrum usage and sharing very flexible.
[0199] FIG. 9 illustrates an example of available spectrum allocated to operators or RATs after sharing. As shown in FIG. 9, the available spectrum is adjustable / configurable over virtual CCs for spectrum sharing among different operators / RATs, which may be done adaptively on demand. Such a scheme is considered like dynamic spectrum sharing in a (true) single carrier, where a V-CC (e.g., V-CC2) may configure a maximum FFT size, that is large enough to support the single CC operation. A larger RF bandwidth (than RF bandwidth in support of equally divided spectrum in FIG. 8) can be configured or tuned to support larger FFT size and larger (channel or transmission) bandwidth, for example, for Operator 2 or RAT2 in operation with V-CC2 in FIG. 9.
[0200] In some embodiments, spectrum sharing with virtual CC reconfiguration or adjustment is addressed. In certain time period or scenario, one operator or RAT in an operator may have un-occupied or unused spectrum (e.g., due to less traffic loading or service activity) , which can be shared with or used by another operator or another RAT of the operator to make more efficient usage of the un-occupied / unused spectrum. Thus, a first V-CC (e.g., V-CC1 in FIG. 9) may be adjusted or reconfigured with smaller transmission or processing bandwidth, and a second V-CC (e.g., V-CC2 in FIG. 9) may be adjusted or reconfigured with larger transmission or processing bandwidth to allow for virtual single CC operation, where the virtual single CC operation, for example, is to perform single FFT operation with spectrum sharing over multiple CCs. In other embodiments, a (frequency) bandwidth for down link (DL) or up link (UL) in a V-CC may be different. DL or UL bandwidth and its associated parameters such as supported maximum FFT size, numerology, etc., can be configured or indicated separately or independently.
[0201] Moreover, given an un-occupied / unused spectrum in the first V-CC, an amount of spectrum (up to the amount of the un-occupied / unused spectrum) in the first V-CC that is close to the spectrum of the second V-CC can be managed in use by the second V-CC (with some processing as needed, described below) . In this way, the operator or RAT in operation with the second V-CC can make use of the shared spectrum from the first V-CC and its own spectrum as one single resource block for flexible usage, such as resource scheduling, FFT operation or other control operation. As a result, this allows for virtual single CC operation with sharable spectrum in a cell of an operator or RAT.
[0202] After a (channel or transmission) bandwidth of a virtual CC (V-CC) is adjusted or configured, UEs in the V-CC cell may perform transmission and receptions accordingly based on the bandwidth and other associated parameters that may be also configured.
[0203] The following describes the relationship between the spectrum shared from the second CC and the original spectrum of the first CC in combination with FIGS. 10 and 11.
[0204] FIG. 10 illustrates an example of two apparatuses using a virtual CC2 (V-CC2) to perform spectrum sharing on an idle spectrum from V-CC1. FIG. 11 illustrates an example of two apparatuses using V-CC2 to perform spectrum sharing on an idle spectrum from V-CC1. The idle spectrum may include an un-occupied spectrum and / or an unused spectrum.
[0205] As shown in FIG. 10 and FIG. 11, there are three V-CCs (V-CC1, V-CC2 and V-CC3) allocated for three operators or RATs, respectively. Where, operator 2 or RAT 2 in an operator may use a first virtual CC (i.e., V-CC2 in the figure) to serve one or more UEs, operator 1 or RAT 1 in the operator or another operator may use a second virtual CC (i.e., V-CC1 in the figure) to serve one or more UEs, and operator 3 or RAT 3 in the operator or other operator may use a third virtual CC (i.e., V-CC3 in the figure) to serve one or more UEs. The operators or RATs may share the usage of spectrum mutually to enhance the spectrum usage efficiency or reduce implementation costs. In the embodiments of the present disclosure, the first virtual CC used by operator 2 or RAT 2 in an operator is focused, where it can use a portion or all of the un-occupied or unused spectrum of another operator or RAT.
[0206] As shown in FIG. 10 and FIG. 11, Operator 1 or RAT1 with V-CC1 has un-occupied or unused spectrum (as shown in upper chart) . In this case, the un-occupied or unused spectrum may be reused by Operator 2 or RAT2 in operation with V-CC2. Accordingly, the base station shall inform the UEs in the first V-CC cell about the adjustment of the first virtual CC.
[0207] In some implementations, the subcarriers shared from the second CC are adjacent to the original subcarriers of the first CC, or the block of frequency resources shared from the second CC are adjacent to the original frequency resources of the first CC.
[0208] For example, an idle spectrum of the second CC is directly adjacent to the original spectrum of the first CC, and the idle spectrum may be the subcarriers or the block of frequency resources shared from the second CC. Alternatively, the idle spectrum of the second CC is not directly adjacent to the original spectrum of the first CC.
[0209] In order to share the idle spectrum of the second CC, one possible implementation is to swap the idle spectrum of the second CC and the equivalent amount of the spectrum in the second CC that is adjacent to the original spectrum of the first CC, and the equivalent amount of the spectrum may be the subcarriers or the block of frequency resources. Another possible implementation is to use shifting to make the equivalent amount of the spectrum in the second CC that is adjacent to the original spectrum of the first CC to be the subcarriers or the block of frequency resources shared from the second CC.The following descripts these two scenarios in details.
[0210] In one scenario, the subcarriers or the block of frequency resources shared from the second CC are be directly adjacent to the subcarriers or frequency resources of the first CC. In this case, the un-occupied or unused spectrum in V-CC1 is directly adjacent or close to the spectrum of the V-CC2 (i.e., the first virtual CC mentioned above) which is shown in FIG. 10.
[0211] If a port or all of the adjacent un-occupied or unused spectrum from V-CC1 is configured to be allowable for the V-CC2 to use, the UE and the base station using V-CC2 may perform spectrum sharing on the port or all of the adjacent un-occupied or unused spectrum from V-CC1 according to the method provided in the embodiments of the present disclosure.
[0212] For example, in this scenario, the un-occupied or unused spectrum of V-CC1 can be shared and configured to use by an operator or a RAT in operation with the first V-CC (i.e., V-CC2 in the figure) . As a result, the operator or RAT in operation with the first V-CC can consider the shared spectrum from the V-CC1 and its own spectrum as one single resource block for flexible usage, or spectrum sharing with a virtual single CC operation, which is a focus on design in the embodiments of this disclosure. That is, the shared spectrum of the second V-CC and the spectrum of the first V-CC are used as a single chunk of resource blocks or a virtual single CC.
[0213] The virtual single CC operation includes resource scheduling, FFT operation or other control operation. As a result, this allows for virtual single CC operation with sharable spectrum in the first V-CC cell of an operator or RAT; meanwhile the operator or the RAT in operation with V-CC1 may need to maintain its own normal operation for UEs (User equipment) in V-CC1 cell.
[0214] For example, in FIG. 10, there are three V-CCs (V-CC1, V-CC2 and V-CC3) allocated for three operators or RATs, respectively. Operator 1 or RAT1 with V-CC1 has un-occupied or unused spectrum (as shown in upper chart) , which is directly adjacent to the spectrum of Operator 2 or RAT2 with V-CC2. In this case, the un-occupied or unused spectrum of V-CC1 may be shared the un-occupied or unused spectrum readily with Operator 2 or RAT2 with V-CC2 (as shown in lower chart) .
[0215] One possible implementation is to use the V-CC2 and the un-occupied or unused part of V-CC1 via carrier aggregation (CA) or dual connectivity (DC) technology, which is shown in a) of FIG. 10. In this case, it may need separate or individual signal processing such as FFT / IFFT operation in each of the V-CCs scheduled for traffic transmissions of a UE in the V-CC2 cell.
[0216] Another possible implementation is to use the V-CC2 and the un-occupied part of V-CC1 as a virtual single carrier in the V-CC2 cell (i.e., virtual single CC shown in b) and c) of FIG. 10. In this case, e.g., only one FFT / IFFT operation in V-CC2 is needed to process a portion or all of the un-occupied or un-used spectrum of V-CC1 and its own spectrum in the V-CC2.
[0217] Associated operations and / or configurations may refer to the description for FIG. 11.
[0218] Moreover or alternatively, the occupied spectrum and thus frequency (channel or transmission) bandwidths in V-CC1 and V-CC2 cell can be adjusted each based on factors such as operation time (e.g., day time, night time, etc. ) , traffic loading, traffic type, service type, traffic balances among operators or RATs, or / and power saving mode, etc.
[0219] It is noted that in FIG. 10, same processing and operation for spectrum sharing described above can be performed between V-CC 2 and V-CC3.
[0220] In another scenario, the subcarriers or the block of frequency resources of the second CC are not directly adjacent to the original subcarriers or frequency resources of the first CC.
[0221] For example, the un-occupied or unused spectrum in V-CC1 is not directly adjacent or not close to the spectrum of the V-CC2 which is shown in FIG. 11.
[0222] In this scenario, one possible implementation is that an amount (aportion or all, up to the size of the un-occupied or unused spectrum) of the un-occupied or unused spectrum of V-CC1 may be swapped (i.e., exchanging of two spectrum portions for usage in the first V-CC) with an equivalent amount of spectrum (of V-CC1) that is adjacent to the spectrum of V-CC2 (as shown in middle chart in FIG. 11) . The equivalent amount of spectrum that is adjacent to the spectrum of V-CC2 is the shared spectrum.
[0223] As a result, the operator or RAT in operation with the first V-CC (i.e., V-CC2 in the figure) can consider the shared spectrum from the second V-CC (i.e., V-CC1 in the figure) and its own spectrum as one single resource block for flexible usage, or spectrum sharing with a virtual single CC operation, which is a focus on design in this disclosure. That is, the shared spectrum of the second V-CC and the original spectrum of the first virtual CC are used as a single chunk of resource blocks or a virtual single CC. The virtual single CC operation includes resource scheduling, FFT operation or other control operation. As a result, this allows for virtual single CC operation with sharable spectrum in the first V-CC cell of an operator or RAT; meanwhile the operator or the RAT in operation with second V-CC (e.g., V-CC1) may need to maintain its own normal operation for UEs (User equipment) in the second virtual CC cell.
[0224] As an example, in FIG. 11, there are three V-CCs (V-CC1, V-CC2 and V-CC3) allocated for three operators or RATs, respectively. Operator 1 or RAT1 with V-CC1 has un-occupied or unused spectrum as shown in a) , but not directly adjacent to the spectrum of Operator 2 or RAT2 with V-CC2 (i.e., the first virtual CC) . In this case, the un-occupied or unused spectrum of Operator 1 or RAT1 can be shared in a portion or all of the spectrum with Operator 2 or RAT2, using carrier aggregation (CA) or dual connectivity (DC) with more than one CC, where the portion or all of the un-occupied or unused spectrum of Operator 1 can be scheduled for UEs in the V-CC2 cell, or can be scheduled with spectrum of V-CC2 for UEs in the V-CC2 cell. The CA / DC based spectrum sharing scheme may need separate or individual signal processing such as FFT / IFFT operation in each of the V-CCs scheduled for traffic transmissions of a UE in the V-CC2 cell.
[0225] To simplify the process and procedure or reduce the processing complexity for spectrum sharing in this case, the spectrum sharing can be done with virtual single CC operation, e.g., only one FFT / IFFT operation in V-CC2 is used, which may utilize (aportion or all of) the un-occupied or un-used spectrum of V-CC1. The virtual single CC operation may include CC processing and configuration provided below: (aportion or all of) the un-occupied or unused spectrum of V-CC1 may swap with an equivalent amount of spectrum (of V-CC1) that is adjacent to the spectrum of V-CC2, as shown in a) and b) .
[0226] Associated operations and / or configurations for swap are given below.
[0227] Supported (maximum) bandwidth, and / or supported (maximum) of FFT / IFFT size can be pre-defined or (re) configured in the V-CC2 cell; this allows a maximum size of spectrum that can be shared from other V-CC (s) , which is based on the supported bandwidth (including the shared spectrum) , numerology, FFT / IFFT size, etc. That is, the method in embodiments of the present disclosure further includes: pre-defining or configuring at least one of: supported bandwidth or supported maximum bandwidth of the first virtual carrier component; supported FFT or IFFT size or supported maximum of FFT or IFFT size of the first virtual carrier component; and supported maximum size of sharing spectrum of the second virtual carrier component.
[0228] The supported (maximum) bandwidth may mean supported channel bandwidth or supported maximum channel bandwidth. The supported (maximum) of FFT / IFFT size may mean supported of FFT / IFFT size or supported maximum of FFT / IFFT size. The maximum size of spectrum may be determined based on at least one of: Supported (maximum) bandwidth, supported (maximum) of FFT / IFFT size, numerology, FFT / IFFT size, etc. The numerology may include the maximum size of spectrum that can be shared from other V-CC (s) , or supported maximum size of sharing spectrum of the second virtual carrier component. The subcarrier spacing of the subcarriers or the block of frequency resources shared from the second CC and a subcarrier spacing of the original frequency resources of the first CC are the same.
[0229] In some implementations, there can be slow spectrum sharing among different operators or a fast spectrum sharing among different RATs within one operator, where multiple or different RATs in FIG. 11 may or may not belong to same operator. Another possible implementation of the sharing on un-occupied and non-adjacent spectrum is shifting: all or portion of occupied spectrum in V-CC1 may be shifted toward left-hand side with an amount of spectrum (equal to or less than the amount of the un-occupied spectrum) , leaving the amount of spectrum of V-CC1 that is adjacent to spectrum of V-CC2 available for use by V-CC2.
[0230] Either shifting spectrum like this or swapping spectrum as described above may be configurable (with configuration or indication scheme described below, e.g., by a signaling) .
[0231] Moreover or alternatively, a (channel or transmission) bandwidth in the V-CC2 cell can be adjusted based on factors such as availability of additional spectrum from other V-CC, supported maximum bandwidth, supported maximum of FFT / IFFT size, numerology, operation time (e.g., day time, night time, etc. ) , traffic loading, traffic type, service type, traffic balances among operators or RATs, or / and power saving mode, etc.
[0232] Either b) or c) scenario in FIG. 11 can be applied for virtual single CC operation, depending on the carrier spectrum allocation scenario and guard band configuration between V-CCs.
[0233] In some implementations, the guard band may be between the original subcarriers of the first CC and the subcarriers shared from the second CC. Alternatively, the guard band may be between the original frequency resources of the first CC and the block of frequency resources shared from the second CC.
[0234] In some examples, the guard band may be at an edge of frequency resources of the first CC or within the frequency resources of the first CC.
[0235] In some implementations, subcarriers associated with the guard band is set to a zero power signal or is muted in signal transmissions.
[0236] For example, In b) of FIG. 11, there is a gap or a guard band required, e.g., by RF design or due to spectrum regulation, between the shared spectrum from V-CC1 and the spectrum of V-CC2, in this case, for example, subcarriers associated with the gap or the guard band may be set to “zero power” signal or may be muted in their signal transmissions, during the FFT / IFFT operation in the V-CC2 cell.
[0237] For example, in c) of FIG. 11, a guard band between two virtual carriers or two carrier components can be configured depending on one or more of the following factors such as supported maximum bandwidth, supported maximum of FFT / IFFT size, numerology, operation time (e.g., day time, night time, etc. ) , traffic loading, traffic type, service type, traffic balances among operators or RATs, or / and power saving mode, etc.
[0238] In some embodiments, there is no guard band configured.
[0239] In some examples, the guard band has a minimum value of zero. For example, a size of a guard band between two adjacent virtual CCs can be small or even zero, depending RAT type, traffic, application, numerology, waveform type, etc. In other embodiments, windowed Orthogonal Frequency Division Multiplexing (w-OFDM) or filtered-OFDM (f-OFDM) can be employed to further mitigate or remove inter CC interference, which is described in the later paragraphs.
[0240] That is, there is not a gap or a guard band between the shared spectrum from V-CC1 and the spectrum of V-CC2, and / or, there is not a guard band between two virtual carriers or two carrier components in the shared spectrum from V-CC1 and the spectrum of V-CC2.
[0241] As a result, a virtual signal CC operation may include one single FFT / IFFT operation in the V-CC2 by considering the shared spectrum from V-CC1 and its own spectrum in V-CC2 as one single resource block to use for scheduling and signal processing. That is, the spectrum shared from the second CC and the original spectrum of the first CC are used as a single chunk of resource blocks or a virtual single CC.
[0242] It is noted that in FIG. 11, same processing and operation for spectrum sharing described above can be performed between Operator 2 and Operator 3 or between RAT2 and RAT3 in operation with V-CC 2 and V-CC3, respectively.
[0243] The proposed schemes in the embodiments of this disclosure may be applicable to orthogonal frequency division multiplexing (OFDM) signals, for example cyclic prefix orthogonal frequency division multiplexing (CP-OFDM) or discrete fourier transform -spread-orthogonal frequency division multiplexing (DFT-s-OFDM) ; for example, DL transmission is to use CP-OFDM signal and UL transmission is to use CP-OFDM or DFT-s-OFDM signal.
[0244] In another implementation, two schemes are addressed to help mitigate interference between guard bands (i.e., buffering gaps) of two virtual CCs (as shown in FIG. 10) as needed if the guard band sizes are configured small (to reduce spectrum usage) or are not big enough that leads to certain interference or cross-CC signaling leakage. Given virtual CC processing procedure and configuration are provided in this application, windowed OFDM (w-OFDM) or filtered OFDM (f-OFDM) can be used to further mitigate the carrier interference or cross-CC signaling leakage. This is additional processing in time domain after generation of CP-OFDM or DFT-s-OFDM signal.
[0245] w-OFDM is an enhanced variant of traditional cyclic prefix orthogonal frequency division multiplexing (CP-OFDM) . It addresses the limitations of CP-OFDM, especially when dealing with asynchronous transmissions and reducing inter-carrier interference (ICI) , where small gap bands are inserted between adjacent subcarriers, and each subcarrier is multiplied by a window function (such as a raised cosine or Kaiser window) to reduce side lobes and spectral leakage. Thus, it may lead to improved spectral efficiency due to reduced guard band size and enhanced ICI suppression by using windowing techniques, which supports asynchronous transmission without the need for strict synchronization. On the other hand, it may increase complexity in receiver design due to windowing and sensitive to Doppler shifts and channel variations.
[0246] f-OFDM is another alternative to CP-OFDM, designed to mitigate ICI and improve spectral efficiency. The frequency spectrum is divided into sub-bands, and each sub-band is filtered independently. Custom filters (such as Sinc or Gaussian filters) are applied to each sub-band. This may reduce out-of-band emissions (OOBE) compared to CP-OFDM, have efficient use of spectrum by allowing tighter subcarrier spacing, and support asynchronous transmission. On the other hand, this scheme may increase computational complexity due to filter design and implementation and sensitive to channel variations and synchronization errors.
[0247] In some implementations, after step 2, when at least one value of the one or more first parameters are changed after spectrum sharing, a reconfiguration of at least one of the one or more first parameters is provided. For example, when the channel bandwidth of the first CC is changed, a reconfiguration of an updated channel bandwidth for the first CC may be provided to the second communication device in its cell.
[0248] In this case, in some embodiments, after step 1, the method for spectrum sharing further includes step 5.
[0249] In step 5, the first communication device transmits fifth information for indicating one or more third parameters. Accordingly, the second communication device receives the fifth information.
[0250] The one or more third parameters may be parameters of the first CC allocated to the first communication device after the one or more first parameters are changed. And the one or more third parameters may be determined based on spectrum allocated to the first CC after the one or more first parameters are changed. The one or more third parameters include at least one of: yet another channel bandwidth of the first CC, one or more yet another frequency resource locations of the first CC, yet another frequency resource indexing scheme, yet another numerology, another size of FT, or yet another guard band, where the one or more third parameters and the one or more first parameters have at least one same parameter with different values.
[0251] The yet another channel bandwidth of the first CC may indicate at least one of: yet another bandwidth information of the first CC, yet another bandwidth identity of the first CC. A value of the yet another channel bandwidth and a value of the channel bandwidth may be the same or different. The yet another bandwidth information may indicate information of the latest channel bandwidth of the first CC, such as a width of the latest channel bandwidth of the first CC, a staring frequency location of the latest channel bandwidth of the first CC, a center frequency location of the latest channel bandwidth allocated to the first CC, etc. The yet another bandwidth identity may indicate an identity of the latest channel bandwidth of the first CC.
[0252] The one or more yet another frequency resource locations of the first CC may indicate a location of the latest frequency resource of the first CC. Values of the yet another frequency resource locations and values of the frequency resource locations may be the same or different.
[0253] The yet another frequency resource indexing scheme may indicate an index of the latest frequency resource allocated to the first CC. A value of the yet another frequency resource indexing scheme and the value of the frequency resource indexing scheme may be the same and different.
[0254] The yet another numerology may include a latest subcarrier spacing of the first CC, and the latest subcarrier spacing of the first CC may be a product of 15 kHz and 2m, where m may be an integer. For example, m may be an integer greater than or equal to -2, such as -2, -1, 0, 1, 2, 3 or 4. For example, the latest subcarrier spacing of the first CC may be 3.75 kHz, 7.5 kHz, 15 kHz, 30 kHz, 60 kHz, 120 kHz, 240 kHz, 480 kHz, 960 kHz, or other integer multiple of 15 kHz. Of course, m may also be an integer less than -2, for example, -3, -4, etc. A value of the yet another numerology and the value of the numerology may be the same or different.
[0255] In some implementations, the yet another size of FT is a product of 1024 and 2n, where n is an integer. For example, n may be an integer greater than or equal to -2, such as -2, -1, 0, 1, 2, 3 or 4. For example, the yet another size of FT may be any one of 256, 512, 1024, 2048, 4096, 8192, 16384, etc. Of course, n may also be an integer less than -2, for example, -3, -4, etc. A value of the yet another size of FT and the value of the size of FT may be the same or different.
[0256] The yet another guard band may be between adjacent subcarriers. In some examples, a value of the yet another guard band and the value of the guard band may be the same or different.
[0257] It will be understood that the one or more third parameters and the one or more first parameters have at least one same parameter with different values.
[0258] As the channel bandwidth of the first CC is changed, the value of one or more first parameters may be adjusted. In other words, the first communication device transmits the fifth information for indicating adjustment of the first CC (e.g., first virtual CC) . For example, the base station transmits fifth information indicating adjustment of the first virtual CC. Accordingly, the UE receives the fifth information.
[0259] In some implementations, the fifth information may be carried via any one of RRC signaling, MAC, MAC-CE or DCI or any combination thereof. That is to say, the fifth information may be carried via higher-layer signaling such as RRC signaling, MAC-CE in a semi-static way, or via DCI in a dynamic way.
[0260] In some implementations, a signaling to carry out the fifth information from the first communication device in the first CC cell may be system information message (such as SSB, SIB1 or the other SIBs) , cell-common signaling, group common signaling, or the second communication device specific signaling. As an example, the signaling is from a base station of V-CC2 cell and can be system information message (such as SSB, SIB1 or the other SIBs) , cell-common signaling, group common signaling, or UE specific signaling.
[0261] After the yet another channel bandwidth is allocated to the first CC, when the first communication device and the second communication device need to communication with each other using yet another frequency resources within the yet another channel bandwidth, the first communication device should reschedule the second communication device.
[0262] In step 6, the first communication device transmits sixth information for indicating one or more yet another frequency resources for communication based on the fifth information.
[0263] Accordingly, the second communication device receives the sixth information. For example, the second communication device communicates with the first communication device on the yet another frequency resources within the first CC according to the fourth information.
[0264] For example, the base station transmits sixth information for indicating one or more yet another frequency resources for communication based on the fifth information. Accordingly, the UE receives the sixth information.
[0265] In some implementations, the communication may include at least one of DL or UL transmission. That is, the second communication device transmits data to and / or receives data from the first communication device according to the yet another frequency resources within the first CC indicated by the sixth information. Accordingly, the first communication device receives data from and / or transmits data to the second communication device according to the yet another frequency resources with the first CC indicated by the sixth information.
[0266] In some implementations, the one or more yet another frequency resources in the first CC allocated for communication are used for performing single FT process. For example, the second communication device may use the one or more yet another frequency resources in the first CC allocated for communication to perform the virtual single CC operation, and the virtual single CC operation may include resource scheduling, FFT operation or other control operation. That is, the one or more yet another frequency resources in the first CC according to the second information may be used flexibly.
[0267] In some implementations of the present disclosure, there is provided an apparatus / chipset system having a function of implementing the method implemented by (or at) a UE of the embodiments of the present disclosure. For example, the apparatus / chipset includes a corresponding module, unit, or means for performing operations of the embodiments of the present disclosure. The module, unit, or means may be specifically implemented by using software, may be implemented by using hardware, or may be implemented by using software in combination with hardware.
[0268] In some aspects of the present disclosure, there is provided an apparatus / chipset system comprising means (e.g., at least one processor) to implement a method implemented by (or at) a UE of the present disclosure. The apparatus / chipset system may be the UE (that is, a terminal device) or a module / component in the UE. In details, the at least one processor may execute instructions stored in a computer-readable medium to implement the method.
[0269] In some implementations, the apparatus / chipset system may include an interface circuit, and the processor is configured to communicate with another apparatus or component through the interface circuit.
[0270] In some implementations, the apparatus / chipset system may further include the computer-readable medium.
[0271] In some implementations of the present disclosure, there is provided an apparatus / chipset system having a function of implementing the method implemented by (or at) a network device (e.g., base station) of the embodiments of the present disclosure. For example, the apparatus / chipset includes a corresponding module, unit, or means for performing operations of the embodiments of the present disclosure. The module, unit, or means may be specifically implemented by using software, may be implemented by using hardware, or may be implemented by using software in combination with hardware.
[0272] In some aspects of the present disclosure, there is provided an apparatus / chipset system comprising means (e.g., at least one processor) to implement the method implemented by (or at) a network device (e.g., base station) of the present disclosure. The apparatus / chipset system may be the network device or a module / component in the network device. In details, the at least one processor may execute instructions stored in a computer-readable medium to implement the method.
[0273] FIG. 12 illustrates an example apparatus 410 according to an implementation of the present disclosure. The apparatus 410 may be a communication device or an apparatus implemented in a communication device such as the ED 110 or the TRPs 170a, 170b, or 172. For example, the apparatus 410 implemented in an ED may be an integrated circuit, which in some instances may be referred to as a chip, a modem, a modem chip, a baseband chip, or a baseband processor. In some implementations, one or more integrated circuits can be packaged into a system-on-chip, a system-in-package, or a multi-chip module. The apparatus 410 can include one or more integrated circuits and other discrete components. In some implementations, the apparatus 410 may be a module within the ED 110, or within the apparatus 310. In some implementations, the apparatus 410 may be a module within one of the TRPs 170a, 170b, 172, or the apparatus 320a or 320b.
[0274] In an example, the apparatus 410 may include one or more processors or processor cores 411, and an interface circuit 412. The apparatus 410 may further include a memory 413. The one or more processors or processor cores 411 are configured to process signals and execute one or more communication protocols. The memory 413 is configured to store at least a part of corresponding computer program instructions and / or data. In an example, the one or more processors or processor cores 411 execute the computer program instructions stored in the memory 413 to implement related operations (for example, inputting, outputting, receiving, and transmitting) in the method embodiments disclosed herein. In some implementations, the memory 413 being configured to store the corresponding computer program instructions and / or data may mean that the memory 413 is configured to store all of the corresponding computer program instructions and / or data for execution by the one or more processors or processor cores 411. In some implementations, the memory 413 being configured to store the corresponding computer program instructions and / or data may mean that the memory 413 is configured to store a part of the corresponding computer program instructions and / or data. For example, the part of the corresponding computer program instructions and / or data may include computer program instructions and / or data that need to be currently executed by the one or more processors or processor cores 411. Thus, the memory 413 may store different parts of computer program instructions and / or data for a plurality times for the one or more processors or processor cores 411 to perform related operations in the method embodiments disclosed herein. As a communication interface, the interface circuit 412 is configured to implement communication with another component. For example, the interface circuit 412 may communicate a signal with other apparatus / system such as a radio frequency processing apparatus, or processor system. The communication includes transmitting signal (or data, information) to another component or device, or receives signal from another component or device. “transmitting” includes outputting the signal to a component or device that is directly or indirectly coupled to the interface circuit (transmitting unit) . “receiving” includes inputting or obtaining a signal from a component or device that is directly or indirectly coupled to the interface circuit (receiving unit) . Optionally, to reduce a load of the one or more processors, a baseband signal processing circuit 414 may be also disposed to implement processing of at least a part of baseband signals, including signal demodulation, modulation, encoding, decoding, or the like.
[0275] The apparatus 410 may be the processor 210 (or 260) within the apparatus 310 (or 320) , in some scenarios, or may be included within the processor 210 (or 260 or 276) within the apparatus 310 (or 320a or 320b) in some scenarios. The apparatus 410 may be a baseband chip or may include a baseband chip. In some implementations, the apparatus 410 may be independently packaged into a chip. In some implementations, the apparatus 310 (or 320a or 320b) includes different types of chips. The apparatus 410 may be packaged into a processor chip (for example, an SoC chip or an SIP chip) with the different types of chips. In some implementations, the apparatus 410 may be packaged into a chip with some or all of circuits of a radio frequency processing system that may further be included in the apparatus 310 (or 320a or 320b) .
[0276] In some aspects of the present disclosure, there is provided a system comprising at least one of an apparatus in (or at) a UE of the present disclosure, or an apparatus in (or at) a network device of the present disclosure.
[0277] In some implementations, the apparatus / chipset system may include an interface circuit, and the processor is configured to communicate with another apparatus or component through the interface circuit.
[0278] In some implementations, the apparatus / chipset system may further include the computer-readable medium.
[0279] In some aspects of the present disclosure, there is provided an apparatus / chipset system comprising an interface circuit to implement the method implemented by (or at) a UE of the present disclosure.
[0280] In some implementations, the interface circuit includes one or more transceivers.
[0281] In some implementations of the present disclosure, there is provided an apparatus / chipset system comprising an interface circuit to implement the method implemented by (or at) a network device (e.g., base station) of the embodiments of the present disclosure.
[0282] In some implementations, the interface circuit includes one or more transceivers.
[0283] In some aspects of the present disclosure, there is provided a method performed by a system comprising at least one of an apparatus in (or at) a UE of the present disclosure, and an apparatus in (or at) a network device of the present disclosure.
[0284] In some aspects of the present disclosure, there is provided a computer program comprising instructions. The instructions, when executed by a processor, may cause the processor to implement a method of the present disclosure.
[0285] In some aspects of the present disclosure, there is provided a computer-readable storage medium (e.g., a non-transitory computer-readable medium) storing instructions, the instructions, when executed by a processor, may cause the processor to implement a method of the present disclosure.
[0286] The solutions described in the disclosure is applicable to a next generation (e.g. a future generation or later) network, or a legacy (e.g. 5G, 4G, 3G or 2G) network.
[0287] It will be appreciated that any module, component, or device disclosed herein that executes instructions may include, or otherwise have access to, a non-transitory computer / processor readable storage medium or media for storage of information, such as computer / processor readable instructions, data structures, program modules and / or other data. A non-exhaustive list of examples of non-transitory computer / processor readable storage media includes magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, optical disks such as compact disc read-only memory (CD-ROM) , digital video discs or digital versatile discs (i.e., DVDs) , Blu-ray DiscTM, or other optical storage, volatile and non-volatile, removable and non-removable media implemented in any method or technology, random-access memory (RAM) , read-only memory (ROM) , electrically erasable programmable read-only memory (EEPROM) , flash memory or other memory technology. Any such non-transitory computer / processor storage media may be part of a device / apparatus or accessible or connectable thereto. Computer / processor readable / executable instructions to implement a method, an application or a module described herein may be stored or otherwise held by such non-transitory computer / processor readable storage media.
[0288] The present disclosure encompasses various embodiments, including not only method embodiments, but also other embodiments such as apparatus embodiments and embodiments related to non-transitory computer readable storage media. Embodiments may incorporate, individually or in combinations, the features disclosed herein.
[0289] Although this disclosure refers to illustrative embodiments, this is not intended to be construed in a limiting sense. Various modifications and combinations of the illustrative embodiments, as well as other embodiments of the disclosure, will be apparent to persons skilled in the art upon reference to the description. When combining two or more embodiments, not all the features in the embodiments to be combined are necessary for the combination.
[0290] Features disclosed herein in the context of any particular embodiments may also or instead be implemented in other embodiments. Method embodiments, for example, may also or instead be implemented in apparatus, system, and / or computer program product embodiments. In addition, although embodiments are described primarily in the context of methods and apparatus, other implementations are also contemplated, as instructions stored on one or more non-transitory computer-readable media, for example. Such media could store programming or instructions to perform any of various methods consistent with the present disclosure.
Claims
1.A method for spectrum sharing, comprising:transmitting first information for indicating one or more first parameters, wherein the one or more first parameters comprise at least one of: channel bandwidth of a first carrier component (CC) , one or more frequency resource locations of the first CC, frequency resource indexing scheme, numerology, a size of Fourier transformation (FT) , or a guard band; andtransmitting second information for indicating one or more frequency resources for communication based on the first information.2.The method of claim 1, wherein a spectrum of the first CC includes an original spectrum of the first CC and a shared spectrum shared from a second CC.3.The method of claim 1 or 2, wherein subcarriers of the first CC comprise a block of subcarriers, and the block of subcarriers comprise original subcarriers of the first CC and subcarriers shared from a second CC; orfrequency sources of the first CC comprise original frequency resources of the first CC and a block of frequency resources shared from the second CC.4.The method of claim 3, wherein the block of subcarriers are used for signal processing; orthe block of frequency resources shared from the second CC and the original frequency resources of the first CC are used as single virtual CC resources.5.The method of claim 4, wherein the subcarriers shared from the second CC are adjacent to the original subcarriers of the first CC; orthe block of frequency resources shared from the second CC are adjacent to the original frequency resources of the first CC.6.The method of claim 5, wherein the guard band is between the original subcarriers of the first CC and the subcarriers shared from the second CC; orthe guard band is between the original frequency resources of the first CC and the block of frequency resources shared from the second CC.7.The method of any one of claims 1 to 6, wherein the one or more frequency resources in the first CC allocated for communication are used for performing single FT process.8.The method of any one of claims 1 to 7, wherein the size of the FT is a product of 1024 and 2n, wherein n is an integer.9.The method of any one of claims 1 to 8, wherein the FT is Fast Fourier Transformation (FFT) , Inverse Fast Fourier Transform (IFFT) , Discrete Fourier Transform (DFT) , or Inverse Discrete Fourier Transform (IDFT) .10.The method of any one of claims 1 to 9, wherein the numerology comprises a subcarrier spacing of the first CC, and the subcarrier spacing of the first CC is a product of 15 kHz and 2m, wherein m is an integer.11.The method of any one of claims 1 to 10, wherein the guard band is at an edge of frequency resources of the first CC or within frequency resources of the first CC.12.The method of any one of claims 1 to 11, wherein the guard band has a minimum value of zero.13.The method of any one of claims 1 to 12, wherein subcarriers associated with the guard band is set to a zero power signal or is muted in signal transmissions.14.The method of any one of claims 1 to 13, wherein the first information is transmitted via at least one of: radio resource control (RRC) signaling, media access control-control element (MAC-CE) , or downlink control information (DCI) .15.The method of any one of claims 1 to 14, further comprising:transmitting third information for indicating one or more second parameters, wherein the one or more second parameters comprise at least one of: another channel bandwidth of the first CC, one or more another frequency resource locations of the first CC, another frequency resource indexing scheme, another numerology, another size of FT, or another guard band, wherein the one or more second parameters and the one or more first parameters have at least one same parameter with different values; andtransmitting fourth information for indicating one or more another frequency resources for communication based on the third information.16.A method for spectrum sharing, comprising:receiving first information for indicating one or more first parameters, wherein the one or more first parameters comprise at least one of: channel bandwidth of a first carrier component (CC) , one or more frequency resource locations of the first CC, frequency resource indexing scheme, numerology, a size of Fourier Transformation (FT) , or a guard band; andreceiving second information for indicating one or more frequency resources for communication based on the first information.17.The method of claim 16, wherein a spectrum of the first CC includes an original spectrum of the first CC and a shared spectrum shared from a second CC.18.The method of claim 16 or 17, wherein subcarriers of the first CC comprise a block of subcarriers, and the block of subcarriers comprise original subcarriers of the first CC and subcarriers shared from a second CC; orfrequency resources of the first CC comprise original frequency resources of the CC and a block of frequency resources shared from the second CC.19.The method of claim 18, wherein the block of subcarriers are used for signal processing; orthe block of frequency resources shared from the second CC and the original frequency resources of the first CC are used as single virtual CC resources.20.The method of claim 19, wherein the subcarriers shared from the second CC are adjacent to the original subcarriers of the first CC; orthe block of frequency resources shared from the second CC are adjacent to the original frequency resources of the first CC.21.The method of claim 19 or 20, wherein the guard band is between the original subcarriers of the first CC and the subcarriers shared from the second CC; orthe guard band is between the original frequency resources of the first CC and the block of frequency resources shared from the second CC.22.The method of any one of claims 16 to 20, wherein the one or more frequency resources in the first CC allocated for communication are used for performing single FT process.23.The method of any one of claims 16 to 22, wherein the size of the FT is a product of 1024 and 2n, wherein n is an integer.24.The method of any one of claims 16 to 23, wherein the FT is Fast Fourier Transformation (FFT) , Inverse Fast Fourier Transform (IFFT) , Discrete Fourier Transform (DFT) , or Inverse Discrete Fourier Transform (IDFT) .25.The method of any one of claims 16 to 24, wherein the numerology comprises a subcarrier spacing of the first CC, and the subcarrier spacing of the first CC is a product of 15 kHz and 2m, wherein m is an integer.26.The method of any one of claims 16 to 25, wherein the guard band is at an edge of frequency resources of the first CC or within frequency resources of the first CC.27.The method of any one of claims 16 to 26, wherein the guard band has a minimum value of zero.28.The method of any one of claims 16 to 27, wherein subcarriers associated with the guard band is set to a zero power signal or is muted in signal transmissions.29.The method of any one of claims 16 to 28, wherein the first information is transmitted via at least one of: radio resource control (RRC) signaling, media access control-control element (MAC-CE) , or downlink control information (DCI) .30.The method of any one of claims 16 to 29, further comprising:receiving third information for indicating one or more second parameters, wherein the one or more second parameters comprise at least one of: another channel bandwidth of the first CC, one or more another frequency resource locations of the first CC, another frequency resource indexing scheme, another numerology, another size of FT, or another guard band, wherein the one or more second parameters and the one or more first parameters have at least one same parameter with different values; andreceiving fourth information for indicating one or more another frequency resources for communication based on the third information.31.A communication apparatus configured to perform the method according to any one of claims 1 to 15 or 16 to 30.32.The communication apparatus of claim 31, comprising:an interface circuit configured to perform the method of any one of claims 1 to 15 or 16 to 30.33.The communication apparatus of claim 32, wherein the interface circuit comprises one or more transceivers.34.An apparatus comprising:one or more processors; anda memory storing instructions which, when executed by the one or more processors, cause the apparatus to perform the method of any one of claims 1 to 15 or 16 to 30.35.A communication system comprising a first communication apparatus configured to perform the method of any one of claims 1 to 15 and a second communication apparatus configured to perform the method of any one of claims 16 to 30.36.A computer-readable storage medium having instructions stored thereon which, when executed by one or more processors, cause the one or more processors to perform the method of any one of claims 1 to 15 or 16 to 30.
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