Methods and apparatuses for scheduling multiple fragmented spectrums with a single dci
By aggregating multiple fragmented spectrums as a single serving cell using a single DCI format, the complexity of UE and network implementation is reduced, enhancing the efficiency and power savings in wireless communication systems.
Patent Information
- Application Number
- PCT/CN2024/140553
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2024-12-19
- Publication Date
- 2025-09-25
AI Technical Summary
The increase in the number of component carriers due to carrier aggregation in wireless communication systems leads to significant complexity in UE and network implementation and management, particularly in managing fragmented spectrums in low frequency bands.
A method is introduced to aggregate multiple fragmented spectrums as a single serving cell using a single DCI format, allowing for simplified cell management and reduced complexity by jointly scheduling these spectrums.
This approach simplifies UE and network implementation and management by reducing the number of component carriers, enabling efficient use of fragmented spectrums and achieving power savings.
Smart Images

Figure CN2024140553_25092025_PF_FP_ABST
Abstract
Description
METHODS AND APPARATUSES FOR SCHEDULING MULTIPLE FRAGMENTED SPECTRUMS WITH A SINGLE DCITECHNICAL FIELD
[0001] Embodiments of the present disclosure generally relate to wireless communication technology, and more particularly to scheduling a plurality of fragmented spectrums with single downlink control information (DCI) .BACKGROUND
[0002] A wireless communication system may include one or multiple network communication devices, such as base stations (BSs) , which may support wireless communication for one or multiple user communication devices, which may be otherwise known as user equipment (UE) , or other suitable terminology. The wireless communication system may support wireless communication with one or multiple user communication devices by utilizing resources of the wireless communication system (e.g., time resources (e.g., symbols, slots, subframes, frames, or the like) ) or frequency resources (e.g., subcarriers, carriers, or the like) . Additionally, the wireless communication system may support wireless communication across various radio access technologies including third generation (3G) radio access technology, fourth generation (4G) radio access technology, fifth generation (5G) (which is also known as new radio (NR) ) radio access technology, among other suitable radio access technologies beyond 5G (e.g., sixth generation (6G) ) .SUMMARY
[0003] An article “a” before an element is unrestricted and understood to refer to “at least one” of those elements or “one or more” of those elements. The terms “a, ” “at least one, ” “one or more, ” and “at least one of one or more” may be interchangeable. As used herein, including in the claims, “or” as used in a list of items (e.g., a list of items prefaced by a phrase such as “at least one of” or “one or more of” or “one or both of”) indicates an inclusive list such that, for example, a list of at least one of A, B, or C means A or B or C or AB or AC or BC or ABC (i.e., A and B and C) . Also, as used herein, the phrase “based on” shall not be construed as a reference to a closed set of conditions. For example, an example step that is described as “based on condition A” may be based on both a condition A and a condition B without departing from the scope of the present disclosure. In other words, as used herein, the phrase “based on” shall be construed in the same manner as the phrase “based at least in part on. ” Further, as used herein, including in the claims, a “set” , a “group” or a “list” may include one or more elements.
[0004] Some embodiments of the present disclosure provide a UE. The UE may include at least one memory; and at least one processor coupled with the at least one memory and configured to cause the UE to: receive a DCI scheduling one or more transport blocks (TBs) on a first set of carriers among a second set of carriers, wherein the second set of carriers is associated with a single serving cell and the DCI includes a first indicator indicating a first set of frequency resources on the first set of carriers; and receive or transmit the one or more TBs on the first set of frequency resources on the first set of carriers based on the DCI.
[0005] In some embodiments, a payload size of the DCI is configured by signaling or determined based on a bandwidth of each carrier within the second set of carriers.
[0006] In some embodiments, the first indicator includes a set of frequency domain resource assignment (FDRA) fields with each corresponding to a carrier of the second set of carriers. In some embodiments, a payload size of the DCI is determined based on a bandwidth and a frequency resource allocation type of each carrier within the second set of carriers.
[0007] In some embodiments, the first indicator includes a set of FDRA fields with each corresponding to a carrier of the first set of carriers. In some embodiments, a payload size of the DCI is determined based on a list of scheduled carrier combinations associated with the second set of carriers and frequency resource allocation types of carriers in the list of scheduled carrier combinations.
[0008] In some embodiments, a size of each of the set of FDRA fields is based on a bandwidth of a corresponding carrier and a frequency resource allocation type of the corresponding carrier.
[0009] In some embodiments, the first indicator indicates the first set of carriers from a list of scheduled carrier combinations associated with the second set of carriers and the first set of frequency resources includes all frequency resources on the first set of carriers. In some embodiments, a payload size of the DCI and a size of the first indicator are determined based on a number of entries in the list of scheduled carrier combinations.
[0010] In some embodiments, the first indicator indicates an entry from a FDRA table associated with the second set of cells, and the entry indicates frequency resources for each carrier of the first set of carriers. In some embodiments, a payload size of the DCI and a size of the first indicator are determined based on a number of entries in the FDRA table.
[0011] In some embodiments, the first indicator indicates the first set of frequency resources from a second set of frequency resources including all frequency resources on the second set of carriers excluding frequency gap (s) between any two neighboring carriers within the second set of carriers. In some embodiments, a payload size of the DCI and a size of the first indicator are determined based on a bandwidth and a frequency resource allocation type for the second set of carriers.
[0012] In some embodiments, the first indicator indicates the first set of frequency resources from a second set of frequency resources including all frequency resources on the second set of carriers and frequency gap (s) between any two neighboring carriers within the second set of carriers. In some embodiments, a payload size of the DCI and a size of the first indicator are determined based on bandwidths of the second set of carriers and the frequency gap (s) between any two neighboring carriers within the second set of carriers and a frequency resource allocation type for the second set of carriers.
[0013] In some embodiments, frequency resource allocation types for the second set of carriers are predefined, configured by signaling or indicated by the DCI, either independently or at a common value.
[0014] In some embodiments, the DCI schedules a single TB on the first set of carriers. In some embodiments, the DCI includes a single modulation and coding scheme (MCS) field, a single new data indicator (NDI) field, a single redundancy version (RV) field, and a single hybrid automatic repeat request (HARQ) process number field for the single TB.
[0015] In some embodiments, each TB of the one or more TBs is scheduled on a single carrier of the first set of carriers, and at least one TB of the one or more TBs is scheduled on each carrier of the first set of carriers. In some embodiments, the DCI includes one or more MCS fields, one or more NDI fields, one or more RV fields, and one or more HARQ process number field for the one or more TBs.
[0016] In some embodiments, the DCI includes a single MCS field for the one or more TBs.
[0017] In some embodiments, the one or more TBs is scheduled on at least one data channel and one or more data channels of the at least one data channel is scheduled on each carrier of the first set of carriers. In some embodiments, a FDRA indication in the DCI for a carrier of the first set of carriers is applied to each of the one or more data channels on the carrier.
[0018] Some embodiments of the present disclosure provide a BS. The BS may include at least one memory; and at least one processor coupled with the at least one memory and configured to cause the BS to: transmit, to a UE, a DCI scheduling one or more TBs on a first set of carriers among a second set of carriers, wherein the second set of carriers is associated with a single serving cell and the DCI includes a first indicator indicating a first set of frequency resources on the first set of carriers; and transmit to the UE or receive from the UE the one or more TBs on the first set of frequency resources on the first set of carriers based on the DCI.
[0019] In some embodiments, a payload size of the DCI is configured by the BS for the UE via signaling, or is determined based on a bandwidth of each carrier within the second set of carriers.
[0020] In some embodiments, the first indicator includes a set of FDRA fields with each corresponding to a carrier of the second set of carriers. In some embodiments, a payload size of the DCI is determined based on a bandwidth and a frequency resource allocation type of each carrier within the second set of carriers.
[0021] In some embodiments, the first indicator includes a set of FDRA fields with each corresponding to a carrier of the first set of carriers. In some embodiments, a payload size of the DCI is determined based on a list of scheduled carrier combinations associated with the second set of carriers and frequency resource allocation types of carriers in the list of scheduled carrier combinations.
[0022] In some embodiments, a size of each of the set of FDRA fields is based on a bandwidth of a corresponding carrier and a frequency resource allocation type of the corresponding carrier.
[0023] In some embodiments, the first indicator indicates the first set of carriers from a list of scheduled carrier combinations associated with the second set of carriers and the first set of frequency resources includes all frequency resources on the first set of carriers. In some embodiments, a payload size of the DCI and a size of the first indicator are determined based on a number of entries in the list of scheduled carrier combinations.
[0024] In some embodiments, the first indicator indicates an entry from a FDRA table associated with the second set of cells, and the entry indicates frequency resources for each carrier of the first set of carriers. In some embodiments, a payload size of the DCI and a size of the first indicator are determined based on a number of entries in the FDRA table.
[0025] In some embodiments, the first indicator indicates the first set of frequency resources from a second set of frequency resources including all frequency resources on the second set of carriers excluding frequency gap (s) between any two neighboring carriers within the second set of carriers. In some embodiments, a payload size of the DCI and a size of the first indicator are determined based on a bandwidth and a frequency resource allocation type for the second set of carriers.
[0026] In some embodiments, the first indicator indicates the first set of frequency resources from a second set of frequency resources including all frequency resources on the second set of carriers and frequency gap (s) between any two neighboring carriers within the second set of carriers. In some embodiments, a payload size of the DCI and a size of the first indicator are determined based on bandwidths of the second set of carriers and the frequency gap (s) between any two neighboring carriers within the second set of carriers and a frequency resource allocation type for the second set of carriers.
[0027] In some embodiments, frequency resource allocation types for the second set of carriers are predefined, configured by the BS for the UE via signaling, or indicated by the DCI, either independently or at a common value.
[0028] In some embodiments, the DCI schedules a single TB on the first set of carriers. In some embodiments, the DCI includes a single MCS field, a single NDI field, a single RV field, and a single HARQ process number field for the single TB.
[0029] In some embodiments, each TB of the one or more TBs is scheduled on a single carrier of the first set of carriers, and at least one TB of the one or more TBs is scheduled on each carrier of the first set of carriers. In some embodiments, the DCI includes one or more MCS fields, one or more NDI fields, one or more RV fields, and one or more HARQ process number field for the one or more TBs.
[0030] In some embodiments, the DCI includes a single MCS field for the one or more TBs.
[0031] In some embodiments, the one or more TBs is scheduled on at least one data channel and one or more data channels of the at least one data channel is scheduled on each carrier of the first set of carriers. In some embodiments, a FDRA indication in the DCI for a carrier of the first set of carriers is applied to each of the one or more data channels on the carrier.
[0032] Some embodiments of the present disclosure provide a processor. The processor may include at least one controller coupled with at least one memory and configured to cause the processor to: receive a DCI scheduling one or more TBs on a first set of carriers among a second set of carriers, wherein the second set of carriers is associated with a single serving cell and the DCI includes a first indicator indicating a first set of frequency resources on the first set of carriers; and receive or transmit the one or more TBs on the first set of frequency resources on the first set of carriers based on the DCI.
[0033] Some embodiments of the present disclosure provide a processor. The processor may include at least one controller coupled with at least one memory and configured to cause the processor to: transmit, to a UE, a DCI scheduling one or more TBs on a first set of carriers among a second set of carriers, wherein the second set of carriers is associated with a single serving cell and the DCI includes a first indicator indicating a first set of frequency resources on the first set of carriers; and transmit to the UE or receive from the UE the one or more TBs on the first set of frequency resources on the first set of carriers based on the DCI.
[0034] Some embodiments of the present disclosure provide a method for wireless communication. The method may include: receiving a DCI scheduling one or more TBs on a first set of carriers among a second set of carriers, wherein the second set of carriers is associated with a single serving cell and the DCI includes a first indicator indicating a first set of frequency resources on the first set of carriers; and receiving or transmitting the one or more TBs on the first set of frequency resources on the first set of carriers based on the DCI.
[0035] Some embodiments of the present disclosure provide a method for wireless communication. The method may include: transmitting, to a UE, a DCI scheduling one or more TBs on a first set of carriers among a second set of carriers, wherein the second set of carriers is associated with a single serving cell and the DCI includes a first indicator indicating a first set of frequency resources on the first set of carriers; and transmitting to the UE or receiving from the UE the one or more TBs on the first set of frequency resources on the first set of carriers based on the DCI.
[0036] Some embodiments of the present disclosure provide an apparatus. According to some embodiments of the present disclosure, the apparatus may include: at least one non-transitory computer-readable medium having stored thereon computer-executable instructions; at least one receiving circuitry; at least one transmitting circuitry; and at least one processor coupled to the at least one non-transitory computer-readable medium, the at least one receiving circuitry and the at least one transmitting circuitry, wherein the at least one non-transitory computer-readable medium and the computer executable instructions may be configured to, with the at least one processor, cause the apparatus to perform a method according to some embodiments of the present disclosure.BRIEF DESCRIPTION OF THE DRAWINGS
[0037] In order to describe the manner in which the advantages and features of the disclosure can be obtained, a description of the disclosure is rendered by reference to specific embodiments thereof, which are illustrated in the appended drawings. These drawings depict only exemplary embodiments of the disclosure and are not therefore to be considered limiting of its scope.
[0038] FIG. 1 illustrates a schematic diagram of a wireless communication system in accordance with some embodiments of the present disclosure;
[0039] FIG. 2 illustrates a plurality of fragmented spectrums in accordance with some embodiments of the present disclosure;
[0040] FIGs. 3A and 3B illustrate example methods for aggregating multiple fragmented spectrums as a single serving cell in accordance with some embodiments of the present disclosure;
[0041] FIGs. 4 and 5 illustrate flowcharts of wireless communication methods in accordance with some embodiments of the present disclosure;
[0042] FIG. 6 illustrates an example of a UE in accordance with some embodiments of the present disclosure;
[0043] FIG. 7 illustrates an example of a processor in accordance with some embodiments of the present disclosure; and
[0044] FIG. 8 illustrates an example of a network equipment (NE) in accordance with some embodiments of the present disclosure.DETAILED DESCRIPTION
[0045] The detailed description of the appended drawings is intended as a description of the preferred embodiments of the present disclosure and is not intended to represent the only form in which the present disclosure may be practiced. It should be understood that the same or equivalent functions may be accomplished by different embodiments that are intended to be encompassed within the spirit and scope of the present disclosure.
[0046] Reference will now be made in detail to some embodiments of the present disclosure, examples of which are illustrated in the accompanying drawings. To facilitate understanding, embodiments are provided under a specific network architecture (s) and new service scenarios, such as the 3rd generation partnership project (3GPP) 5G NR or 6G, 3GPP LTE, and so on. It is contemplated that along with the developments of network architectures and new service scenarios, all embodiments in the present disclosure are also applicable to similar technical problems; and moreover, the terminologies recited in the present disclosure may change, which should not affect the principles of the present disclosure.
[0047] To meet the high data rate requirement of a communication system (e.g., NR) , a wide bandwidth is desired by aggregating multiple carriers or component carriers (CCs) to provide a high data rate. Each component carrier is regarded as one serving cell. With the increase of supported component carriers, it would lead to a large number of component carriers. However, since UE chipset implementation, signaling association and HARQ process management, as well as network management, are designed per carrier, i.e., per serving cell, a large number of component carriers will bring huge complexity to both UE implementation and network implementation and management.
[0048] The present disclosure provides solutions to at least the above problems. For example, new carrier aggregation methods are provided for aggregating multiple carriers as one serving cell, thereby simplifying not only the complexity of UE implementation but also the complexity of network implementation and management.
[0049] FIG. 1 illustrates a schematic diagram of wireless communication system 100 in accordance with some embodiments of the present disclosure.
[0050] The wireless communication system 100 may include one or more NEs 102 (e.g., one or more BSs) , one or more UEs 104, and a core network (CN) 106. The wireless communication system 100 may support various radio access technologies. In some implementations, the wireless communication system 100 may be a 4G network, such as an LTE network or an LTE-Advanced (LTE-A) network. In some other implementations, the wireless communication system 100 may be a NR network, such as a 5G network, a 5G-Advanced (5G-A) network, or a 5G ultra-wideband (5G-UWB) network. In other implementations, the wireless communication system 100 may be a combination of a 4G network and a 5G network, or other suitable radio access technology including Institute of Electrical and Electronics Engineers (IEEE) 802.11 (Wi-Fi) , IEEE 802.16 (WiMAX) , and IEEE 802.20. The wireless communication system 100 may support radio access technologies beyond 5G, for example, 6G. Additionally, the wireless communication system 100 may support technologies, such as time division multiple access (TDMA) , frequency division multiple access (FDMA) , or code division multiple access (CDMA) , etc.
[0051] The one or more NEs 102 may be dispersed throughout a geographic region to form the wireless communication system 100. One or more of the NEs 102 described herein may be or include or may be referred to as a network node, a base station, a network element, a network function, a network entity, a radio access network (RAN) , a NodeB, an eNodeB (eNB) , a next-generation NodeB (gNB) , or other suitable terminology. An NE 102 and a UE 104 may communicate via a communication link, which may be a wireless or wired connection. For example, an NE 102 and a UE 104 may perform wireless communication (e.g., receive signaling, transmit signaling) over a Uu interface.
[0052] An NE 102 may provide a geographic coverage area for which the NE 102 may support services for one or more UEs 104 within the geographic coverage area. For example, an NE 102 and a UE 104 may support wireless communication of signals related to services (e.g., voice, video, packet data, messaging, broadcast, etc. ) according to one or multiple radio access technologies. In some implementations, an NE 102 may be moveable, for example, a satellite associated with a non-terrestrial network (NTN) . In some implementations, different geographic coverage areas 112 associated with the same or different radio access technologies may overlap, but the different geographic coverage areas may be associated with a different NE 102.
[0053] The one or more UEs 104 may be dispersed throughout a geographic region of the wireless communication system 100. A UE 104 may include or may be referred to as a remote unit, a mobile device, a wireless device, a remote device, a subscriber device, a transmitter device, a receiver device, or some other suitable terminology. In some implementations, the UE 104 may be referred to as a unit, a station, a terminal, or a client, among other examples. Additionally, or alternatively, the UE 104 may be referred to as an Internet-of-Things (IoT) device, an Internet-of-Everything (IoE) device, or machine-type communication (MTC) device, among other examples.
[0054] A UE 104 may be able to support wireless communication directly with other UEs 104 over a communication link. For example, a UE 104 may support wireless communication directly with another UE 104 over a device-to-device (D2D) communication link. In some implementations, such as vehicle-to-vehicle (V2V) deployments, vehicle-to-everything (V2X) deployments, or cellular-V2X deployments, the communication link 114 may be referred to as a sidelink. For example, a UE 104 may support wireless communication directly with another UE 104 over a PC5 interface.
[0055] An NE 102 may support communication with the CN 106, or with another NE 102, or both. For example, an NE 102 may interface with another NE 102 or the CN 106 through one or more backhaul links (e.g., S1, N2, N3 or another network interface) . In some implementations, the NE 102 may communicate with each other directly. In some other implementations, the NE 102 may communicate with each other or indirectly (e.g., via the CN 106) . In some implementations, one or more NEs 102 may include subcomponents, such as an access network entity, which may be an example of an access node controller (ANC) . An ANC may communicate with the one or more UEs 104 through one or more other access network transmission entities, which may be referred to as radio heads, smart radio heads, or transmission-reception points (TRPs) .
[0056] The CN 106 may support user authentication, access authorization, tracking, connectivity, and other access, routing, or mobility functions. The CN 106 may be an evolved packet core (EPC) , or a 5G core (5GC) , which may include a control plane entity that manages access and mobility (e.g., a mobility management entity (MME) , an access and mobility management (AMF) ) functions and a user plane entity that routes packets or interconnects to external networks (e.g., a serving gateway (S-GW) , a Packet Data Network (PDN) gateway (P-GW) , or a user plane function (UPF) ) . In some implementations, the control plane entity may manage non-access stratum (NAS) functions, such as mobility, authentication, and bearer management (e.g., data bearers, signal bearers, etc. ) for the one or more UEs 104 served by the one or more NEs 102 associated with the CN 106.
[0057] The CN 106 may communicate with a packet data network over one or more backhaul links (e.g., via an S1, N2, N3, or another network interface) . The packet data network may include an application server. In some implementations, one or more UEs 104 may communicate with the application server. A UE 104 may establish a session (e.g., a protocol data unit (PDU) session, or the like) with the CN 106 via an NE 102. The CN 106 may route traffic (e.g., control information, data, and the like) between the UE 104 and the application server using the established session (e.g., the established PDU session) . The PDU session may be an example of a logical connection between the UE 104 and the CN 106 (e.g., one or more network functions of the CN 106) .
[0058] In the wireless communication system 100, the NEs 102 and the UEs 104 may use resources of the wireless communication system 100 (e.g., time resources (e.g., symbols, slots, subframes, frames, or the like) or frequency resources (e.g., subcarriers, carriers) ) to perform various operations (e.g., wireless communication) . In some implementations, the NEs 102 and the UEs 104 may support different resource structures. For example, the NEs 102 and the UEs 104 may support different frame structures. In some implementations, such as in 4G, the NEs 102 and the UEs 104 may support a single frame structure. In some other implementations, such as in 5G and among other suitable radio access technologies, the NEs 102 and the UEs 104 may support various frame structures (i.e., multiple frame structures) . The NEs 102 and the UEs 104 may support various frame structures based on one or more numerologies.
[0059] In some embodiments, the NEs 102 may include one or more relay nodes, integrated access and backhaul (IAB) nodes or wireless access backhaul (WAB) nodes which can provide wireless access services for UEs 104. A relay node (or an IAB node or a WAB node) can directly connect to a BS or hop through one or more relay nodes (or one or more IAB or WAB nodes) before reaching the BS.
[0060] One or more numerologies may be supported in the wireless communication system 100, and a numerology may include a subcarrier spacing and a cyclic prefix. A first numerology (e.g., μ=0) may be associated with a first subcarrier spacing (e.g., 15 kHz) and a normal cyclic prefix. In some implementations, the first numerology (e.g., μ=0) associated with the first subcarrier spacing (e.g., 15 kHz) may utilize one slot per subframe. A second numerology (e.g., μ=1) may be associated with a second subcarrier spacing (e.g., 30 kHz) and a normal cyclic prefix. A third numerology (e.g., μ=2) may be associated with a third subcarrier spacing (e.g., 60 kHz) and a normal cyclic prefix or an extended cyclic prefix. A fourth numerology (e.g., μ=3) may be associated with a fourth subcarrier spacing (e.g., 120 kHz) and a normal cyclic prefix. A fifth numerology (e.g., μ=4) may be associated with a fifth subcarrier spacing (e.g., 240 kHz) and a normal cyclic prefix. A sixth numerology (e.g., μ =5) may be associated with a sixth subcarrier spacing (e.g., 480 kHz) and a normal cyclic prefix. A seventh numerology (e.g., μ=6) may be associated with a seventh subcarrier spacing (e.g., 960 kHz) and a normal cyclic prefix. For ambient IoT communication, additional numerologies (e.g., μ=-1 or μ =-2) may be introduced corresponding to 7.5 kHz or 3.75 kHz respectively.
[0061] A time interval of a resource (e.g., a communication resource) may be organized according to frames (also referred to as radio frames) . Each frame may have a duration, for example, a 10 millisecond (ms) duration. In some implementations, each frame may include multiple subframes. For example, each frame may include 10 subframes, and each subframe may have a duration, for example, a 1 ms duration. In some implementations, each frame may have the same duration. In some implementations, each subframe of a frame may have the same duration.
[0062] Additionally or alternatively, a time interval of a resource (e.g., a communication resource) may be organized according to slots. For example, a subframe may include a number (e.g., quantity) of slots. The number of slots in each subframe may also depend on the one or more numerologies supported in the wireless communication system 100. For instance, the first, second, third, fourth, and fifth numerologies (i.e., μ=0, μ=1, μ=2, μ=3, μ=4) associated with respective subcarrier spacings (SCSs) of 15 kHz, 30 kHz, 60 kHz, 120 kHz, and 240 kHz may utilize a single slot per subframe, two slots per subframe, four slots per subframe, eight slots per subframe, and 16 slots per subframe, respectively. Each slot may include a number (e.g., quantity) of symbols (e.g., orthogonal frequency-division multiplexing (OFDM) symbols) . In some implementations, the number (e.g., quantity) of slots for a subframe may depend on a numerology. For a normal cyclic prefix, a slot may include 14 symbols. For an extended cyclic prefix (e.g., applicable for 60 kHz subcarrier spacing) , a slot may include 12 symbols. The relationship between the number of symbols per slot, the number of slots per subframe, and the number of slots per frame for a normal cyclic prefix and an extended cyclic prefix may depend on a numerology. It should be understood that reference to a first numerology (e.g., μ=0) associated with a first subcarrier spacing (e.g., 15 kHz) may be used interchangeably between subframes and slots.
[0063] In the wireless communication system 100, an electromagnetic (EM) spectrum may be split, based on frequency or wavelength, into various classes, frequency bands, frequency channels, etc. By way of example, the wireless communication system 100 may support one or multiple operating frequency bands, such as frequency range designations FR1 (410 MHz –7.125 GHz) , FR2 (24.25 GHz –52.6 GHz) , FR3 (7.125 GHz –24.25 GHz) , FR4 (52.6 GHz –114.25 GHz) , FR4a or FR4-1 (52.6 GHz –71 GHz) , and FR5 (114.25 GHz –300 GHz) . In some implementations, the NEs 102 and the UEs 104 may perform wireless communication over one or more of the operating frequency bands. In some implementations, FR1 may be used by the NEs 102 and the UEs 104, among other equipment or devices for cellular communication traffic (e.g., control information, data) . In some implementations, FR2 may be used by the NEs 102 and the UEs 104, among other equipment or devices for short-range, high data rate capabilities.
[0064] FR1 may be associated with one or multiple numerologies (e.g., at least three numerologies) . For example, FR1 may be associated with a first numerology (e.g., μ =0) , which includes 15 kHz subcarrier spacing; a second numerology (e.g., μ =1) , which includes 30 kHz subcarrier spacing; and a third numerology (e.g., μ=2) , which includes 60 kHz subcarrier spacing. FR2 may be associated with one or multiple numerologies (e.g., at least 2 numerologies) . For example, FR2 may be associated with a third numerology (e.g., μ=2) , which includes 60 kHz subcarrier spacing; and a fourth numerology (e.g., μ=3) , which includes 120 kHz subcarrier spacing.
[0065] A UE 104 may include computing devices, such as desktop computers, laptop computers, personal digital assistants (PDAs) , tablet computers, smart televisions (e.g., televisions connected to the Internet) , set-top boxes, game consoles, security systems (including security cameras) , vehicle on-board computers, network devices (e.g., routers, switches, and modems) , or the like. According to some embodiments of the present disclosure, a UE 104 may include a portable wireless communication device, a smart phone, a cellular telephone, a flip phone, a device having a subscriber identity module, a personal computer, a selective call receiver, or any other device that is capable of sending and receiving communication signals on a wireless network. In some embodiments of the present disclosure, a UE 104 includes wearable devices, such as smart watches, fitness bands, optical head-mounted displays, or the like. Moreover, a UE 104 may be referred to as a subscriber unit, a mobile, a mobile station, a user, a terminal, a mobile terminal, a wireless terminal, a fixed terminal, a subscriber station, a user terminal, or a device, or described using other terminology used in the art. A UE 104 may communicate with an NE 102 (e.g., a BS) via uplink (UL) communication signals. An NE 102 may communicate with a UE 104 via downlink (DL) communication signals.
[0066] In some embodiments of the present disclosure, an NE 102 and a UE 104 may communicate over licensed spectrums, whereas in some other embodiments, an NE 102 and a UE 104 may communicate over unlicensed spectrums. The present disclosure is not intended to be limited to the implementation of any particular wireless communication system architecture or protocol. Persons skilled in the art should understand that as technology develops and advances, the terminologies described in the present disclosure may change, but should not affect or limit the principles and spirit of the present disclosure.
[0067] In a wireless communication system, an NE (e.g., a BS) and a UE may communicate via DL channels and UL channels. For example, a UE may monitor a PDCCH in one or more search spaces. The PDCCH may carry a DCI, which may schedule uplink channels, such as a physical uplink shared channel (PUSCH) , or downlink channels, such as a physical downlink shared channel (PDSCH) .
[0068] A communication system (e.g., NR) may be designed to support a plurality of component carriers (CCs) , for example, a maximum of 16 component carriers in the case of carrier aggregation or a maximum of 32 CCs in the case of dual connectivity (DC) . Each component carrier is regarded as one serving cell and each serving cell may broadcast synchronization signal block (SSB) and system information as well as paging message periodically. To meet the high data rate requirement of the communication system (e.g., NR) , in some embodiments, a wide bandwidth is desired by aggregating multiple carriers to provide a high data rate. With the increase of supported component carriers, especially more and more fragmented spectrums in, for example, the low frequency band re-farmed from 2G, 3G and / or 4G, a large number of component carriers is expected to increase significantly in the coming years. However, since UE chipset implementation, signaling association and HARQ process management, as well as network management, are designed per carrier, i.e., per serving cell (as mentioned above, each carrier is regarded as one serving cell) , a large number of component carriers will bring huge complexity to both UE implementation and network implementation and management. Operators are keen to explore new carrier aggregation methods to reduce the number of component carriers, thereby simplifying network implementation and management complexity. UE vendors also expect such methods to reduce the complexity of UE implementation.
[0069] In some embodiments of the present disclosure, for flexible and efficient use of fragmented spectrums in low frequencies where an operator has, aggregation of multiple fragmented spectrums as one serving cell can achieve simplified cell management and load balancing as well as power savings. Embodiments of the present disclosure provide an enhanced frequency resource allocation mechanism to jointly schedule multiple fragmented spectrums with a single DCI format. In some embodiments, the total bandwidth of the multiple fragmented spectrums may include the frequency gaps between neighboring fragmented spectrums and can be larger than the existing largest channel bandwidth. Correspondingly, the enhanced frequency domain resource allocation mechanism can support a larger bandwidth. The enhanced mechanism can be applied to, for example, 6G carrier aggregation. More details on the embodiments of the present disclosure will be illustrated in the following text in combination with the appended drawings.
[0070] In the following embodiments of the present disclosure, the term carrier can refer to a fragmented spectrum in the frequency domain, instead of a component carrier in the legacy CA framework. The fragmented spectrum may have a narrow bandwidth. For example, FIG. 2 shows a plurality of spectrums 211-217 in accordance with some embodiments of the present disclosure. In some embodiments, spectrums 211-217 may be fragmented spectrums in the low frequency band re-farmed from 2G, 3G, and / or 4G. In some embodiments, each of spectrums 211-217 may be referred to as one carrier. In some embodiments, spectrums 211-217 may be aggregated as a single serving cell. Although FIG. 2 shows that spectrums 211-217 are non-contiguous in the frequency domain, it should be noted that one or more spectrums of spectrums 211-217 may be contiguous in some other embodiments.
[0071] In some embodiments of the present disclosure, a set of carriers (denoted as carrier set #C) may be configured for joint scheduling with a single DCI. Carrier set #C may include a plurality of contiguous or non-contiguous physical carriers in the frequency domain. For example, spectrums 211-217 in FIG. 2 may be configured for a UE by a BS. For non-contiguous carriers, a frequency gap between two neighboring carriers may be reserved for other operators or other wireless systems and thus cannot be used for the serving base station and UEs.
[0072] In some embodiments of the present disclosure, the total frequency resources of carrier set #C may be regarded as a serving cell. This serving cell can be deemed to be associated with a component carrier. This component carrier may be referred to as a virtual carrier, virtual spectrum, virtual carrier combination, virtual spectrum set, virtual spectrum combination, virtual spectrum integration, integrated spectrum, combined carrier, combined spectrum, carrier combination, carrier set, spectrum set, spectrum combination, spectrum integration, integrated spectrum, combined carrier, combined spectrum or other names that can be conceived of by persons skilled in the art, which are covered by this disclosure.
[0073] From the perspective of a UE, carrier set #C can be used for either downlink transmission or uplink transmission. Various methods may be employed for scheduling carrier set #C. For example, in some embodiments of the present disclosure, for a UE, carrier set #C cannot be scheduled for both downlink transmission and uplink transmission in the same time unit (e.g., a single slot) in order to avoid full duplex complexity at the UE side. For example, when one or more carriers within carrier set #C are used for downlink (or uplink) transmission, the remaining carriers within carrier set #C cannot be used for uplink (or downlink) transmission simultaneously. For example, in some embodiments of the present disclosure, for a UE, carrier set #C can be scheduled for both downlink transmission and uplink transmission in the same time unit (e.g., a single slot) if the UE has full duplex capability for carrier set #C. For example, when one or more carriers within carrier set #C are used for downlink (or uplink) transmission, the remaining carriers within carrier set #C can be used for uplink (or downlink) transmission simultaneously.
[0074] In some embodiments, a single DCI can schedule one or more carriers (denoted as carrier set #S) among carrier set #C. In some embodiments, the payload size of the DCI may be configured by signaling (e.g., radio recourse control (RRC) signaling) or determined based on the bandwidth of each carrier within carrier set #C. From the perspective of a UE, it may detect a DCI based on the largest payload size predetermined according to, for example, the RRC configuration and sizes of various fields in the DCI. In response to the reception of the DCI, the UE may determine the assigned frequency resources on carrier set #Saccording to certain fields in the DCI and the frequency resource allocation type (s) .
[0075] In some embodiments, one or more TBs can be transmitted on carrier set #S. In some embodiments, the DCI may include an indicator (denoted as indicator #F) indicating a set of frequency resources (e.g., a set of resource blocks (RBs) ) on carrier set #S. The UE may receive the one or more TBs from the BS or transmit the one or more TBs to the BS on the set of frequency resources on carrier set #Sbased on the DCI. For clarity, the set of frequency resources on carrier set #Sscheduled by the DCI is hereinafter referred to as frequency resource set #F. In the case that the DCI schedules downlink transmission, the UE may generate HARQ acknowledgement (HARQ-ACK) information for the one or more TBs and transmit the generated HARQ-ACK information to the BS.
[0076] For example, in some embodiments of the present disclosure, the DCI may schedule a single TB on carrier set #S. For example, the DCI may schedule a single data channel (e.g., PUSCH or PDSCH) carrying the single TB on carrier set #S. This differs from legacy carrier aggregation, where a TB can only be transmitted on a single carrier. In some embodiments, a single TB including a cyclic redundancy check (CRC) part is transmitted on carrier set #S.
[0077] In some embodiments, the DCI may include one or more of the following fields for the single TB: a single MCS field, a single NDI field, a single RV field, and a single HARQ process number field. In some embodiments, in the case that the DCI schedules downlink transmission, the UE may generate a single HARQ-ACK information bit for the TB and transmit the single HARQ-ACK information bit to the BS.
[0078] In some embodiments, indicator #F may include a set of FDRA fields. Each FDRA field may correspond to a carrier within carrier set #C. For example, the number of FDRA fields in the DCI may be equal to the number of carriers within carrier set #C. The applicable FDRA value may suggest that the corresponding carrier is scheduled while the inapplicable FDRA value may suggest that the corresponding carrier is not scheduled. In this way, the DCI can schedule the total frequency resources of the entire set of carriers with a separate FDRA field for each carrier. The number of bits (e.g., size) of each FDRA field in the DCI may be determined according to the bandwidth and the frequency resource allocation type of the corresponding carrier. The payload size of the DCI can be determined based on the bandwidth and the frequency resource allocation type of each carrier within carrier set #C, for example, the total size of all FDRA fields. The UE can determine frequency resource set #F on carrier set #Sbased on the set of FDRA fields (e.g., FDRA fields corresponding to carrier set #S) and respective frequency resource allocation types.
[0079] In some embodiments, the frequency resource allocation types for carrier set #C may be predefined (e.g., in a standard) , configured by signaling (e.g., RRC signaling) or indicated by the DCI. In some embodiments, the frequency resource allocation types for carriers in carrier set #C may be independent of each other, for example, independently predefined or configured per carrier, or independently indicated by the DCI for each scheduled carrier. In some embodiments, the frequency resource allocation types for carriers in carrier set #C may be set at a common value, for example, predefined, configured or indicated as a common value.
[0080] In some embodiments, indicator #F may include a set of FDRA fields. Each FDRA field may correspond to a carrier within carrier set #S. For example, the number of FDRA fields in the DCI may be equal to the number of carriers within carrier set #S. The DCI format may include a scheduled carrier indicator indicating carrier set #Sfrom carrier set #C.
[0081] For example, the scheduled carrier indicator may point to one entry from a list of scheduled carrier combinations associated with carrier set #C. The list of scheduled carrier combinations may include one or more entries with each entry including a scheduled carrier combination including one or more carriers within carrier set #C. For example, the scheduled carrier indicator in the DCI may include an entry index. The indicated entry corresponds to carrier set #S. The list of scheduled carrier combinations may be preconfigured, predefined (e.g., in a standard) , or configured by signaling (e.g., RRC signaling) . The number of bits of the scheduled carrier indicator (e.g., the size of a scheduled carrier indicator field) in the DCI may be determined according to the number of entries in the list of scheduled carrier combinations. In the case that the list includes at least one entry which indicates all carriers of carrier set #C, the total frequency resources of the entire set of carriers can be scheduled by the DCI.
[0082] The number of bits (e.g., size) of each FDRA field in the DCI may be determined according to the bandwidth and the frequency resource allocation type of the corresponding carrier (i.e., the corresponding scheduled carrier) . The payload size of the DCI can be determined based on the list of scheduled carrier combinations and frequency resource allocation types of carriers in the list of scheduled carrier combinations. For example, for each entry in the carrier combination list, the total size of the FDRA fields is determined and the payload size of the DCI can be determined based on the maximum number among all total sizes of the FDRA fields. The UE can determine frequency resource set #F on carrier set #Sbased on the set of FDRA fields and respective frequency resource allocation types.
[0083] In some embodiments, the frequency resource allocation types for carrier set #C may be predefined (e.g., in a standard) , configured by signaling (e.g., RRC signaling) or indicated by the DCI. In some embodiments, the frequency resource allocation types for carriers in carrier set #C may be independent of each other, for example, independently predefined or configured per carrier, or independently indicated by the DCI for each scheduled carrier. In some embodiments, the frequency resource allocation types for carriers in carrier set #C may be set at a common value, for example, predefined, configured or indicated as a common value.
[0084] In some embodiments, indicator #F may include the scheduled carrier indicator indicating carrier set #Sfrom carrier set #C. Descriptions of the scheduled carrier indicator in the foregoing embodiments can be applied here. Frequency resource set #F may include all frequency resources on carrier set #S. That is, if a carrier is indicated by the scheduled carrier indicator (i.e., the carrier is scheduled by the DCI) , then all the frequency resources of this carrier are scheduled. Variable frequency resource allocations can be realized based on variable carriers scheduled by a DCI (i.e., by the scheduled carrier indicator) . In this case, the DCI may not need to include any FDRA fields. This is practical and beneficial because carriers within carrier set #C may have narrow frequency bandwidths and the signaling overhead can be reduced. The payload size of the DCI and the number of bits (e.g., size) of indicator #F can be determined based on the number of entries in the list of scheduled carrier combinations.
[0085] In some embodiments, indicator #F may include a single FDRA field. For example, the FDRA field may indicate an entry from a FDRA table associated with carrier set #C. The indicated entry may indicate frequency resources for each carrier of carrier set #S.
[0086] For example, the FDRA table may include one or more entries with each entry including an applicable or inapplicable FDRA value for each carrier within carrier set #C. The inapplicable FDRA value may suggest that the corresponding carrier is not scheduled. That is, each entry of the FDRA table can indicate a scheduled carrier combination including one or multiple carriers within carrier set #C and frequency resource allocation (s) for the corresponding scheduled one or multiple carriers. Variable frequency resource allocation can be realized based on variable scheduled carriers and variable frequency resource allocations (e.g., different FDRA values) on each scheduled carrier. In some embodiments, considering that carriers within carrier set #C may have narrow frequency bandwidths, the possible frequency resource allocations for each carrier within carrier set #C may include a few frequency resource combinations.
[0087] The FDRA table may be preconfigured, predefined (e.g., in a standard) , or configured by signaling (e.g., RRC signaling) . The number of bits (e.g., size) of the FDRA field in the DCI may be determined according to the number of entries in the FDRA table. In the case that the FDRA table includes at least one entry which indicates full frequency resource allocation on each carrier in carrier set #C, the total frequency resources of the entire set of carriers can be scheduled by the DCI.
[0088] For example, the FDRA field in the DCI may include an entry index of the FDRA table. The indicated entry can indicate carrier set #Sand the frequency resource set #F on carrier set #S. For example, the indicated entry may include an applicable FDRA value for each carrier in carrier set #S. Frequency resource set #F can be determined based on the applicable FDRA value for each carrier in carrier set #Sand the frequency resource allocation type of the corresponding carrier. The payload size of the DCI and the number of bits (e.g., size) of indicator #F (e.g., the single FDRA field) can be determined based on the number of entries in the FDRA table.
[0089] The frequency resource allocation types for carrier set #C may be predefined (e.g., in a standard) , configured by signaling (e.g., RRC signaling) or indicated by the DCI. In some embodiments, the frequency resource allocation types for carriers in carrier set #C may be independent of each other, for example, independently predefined or configured per carrier, or independently indicated by the DCI for each scheduled carrier. In some embodiments, the frequency resource allocation types for carriers in carrier set #C may be set at a common value, for example, predefined, configured or indicated as a common value.
[0090] Table 1 shows an exemplary FDRA table where it is assumed that carrier set #C includes Carrier 1 to Carrier 4. It should be understood that Table 1 is only for illustrative purposes, and should not be construed as limiting the embodiments of the present disclosure. Table 1: FDRA Table
[0091] In some embodiments, indicator #F may include a single FDRA field for indicating frequency resource set #F from carrier set #C. For example, the FDRA field may indicate frequency resource set #F from a set of frequency resources (denoted as frequency resource set #C) including all frequency resources on carrier set #C excluding the frequency gap (s) between any two neighboring carriers within carrier set #C. That is, frequency resource set #C does not include the frequency gap (s) between two non-contiguous neighboring carriers within carrier set #C, if any. The payload size of the DCI and the number of bits of indicator #F (e.g., the size of the FDRA field) are determined based on the bandwidth and the frequency resource allocation type for carrier set #C. Here, the bandwidth for carrier set #C refers to the total bandwidth of all carriers in carrier set #C, excluding any possible gaps.
[0092] The frequency resource allocation type for carrier set #C may be predefined (e.g., in a standard) , configured by signaling (e.g., RRC signaling) or indicated by the DCI. In some embodiments, the frequency resource allocation types for carriers in carrier set #C may be independent of each other, for example, independently predefined or configured per carrier, or independently indicated by the DCI for each scheduled carrier. In some embodiments, the frequency resource allocation types for carriers in carrier set #C may be set at a common value, for example, predefined, configured or indicated as a common value. For example, the frequency resource allocation type for carrier set #C can be predefined as resource allocation type 0 (i.e., RB group (RBG) based resource allocation type) .
[0093] The frequency resources (e.g., RBs) in frequency resource set #C (e.g., the frequency resources of carrier set #C) may be numbered contiguously for resource indication. In some cases, due to the contiguous frequency resource numbering for the entire set of carriers, from the perspective of a UE, the total number of frequency resources of carrier set #C may exceed the maximum number of frequency resources (e.g., the limitation of 275 RBs) that can be scheduled for a single cell.
[0094] For example, assuming that carrier set #C includes N physical carriers, all the frequency resources (e.g., RBs) within the N physical carriers can be jointly numbered for frequency resource indexing in, for example, an ascending order of frequencies. For example, referring to FIG. 3A, carrier set #C includes 4 physical carriers, i.e., carriers 311-317 and is associated with serving cell 320A. In some examples, carriers 311-317 may correspond to spectrums 211-217 in FIG. 2, respectively. In some embodiments, a DCI may schedule a single PDSCH or PUSCH carrying a single TB on serving cell 320A, more specifically on one or more carriers of carriers 311-317. It is assumed that carrier 311 includes K1 RBs, carrier 313 includes K2 RBs, carrier 315 includes K3 RBs, and carrier 317 includes K4 RBs, denoting Y= K1 + K2 + K3 + K4, then these Y RBs can be contiguously numbered as RB0, RB1, …, RBY-1 in the ascending order of frequencies. After determining the total Y RBs of carrier set #C, the UE then can further determine the DCI payload size and the FDRA field size of the DCI according to the applicable frequency resource allocation type. The UE can determine frequency resource set #F from the Y RBs based on the FDRA field and the frequency resource allocation type.
[0095] In some embodiments, indicator #F may include a single FDRA field for indicating frequency resource set #F from carrier set #C. For example, the FDRA field may indicate frequency resource set #F from a set of frequency resources (denoted as frequency resource set #C’ ) including all frequency resources on carrier set #C and the frequency gap (s) between any two neighboring carriers within carrier set #C. That is, frequency resource set #C’ includes the frequency gap (s) between two non-contiguous neighboring carriers within carrier set #C, if any. The payload size of the DCI and the number of bits of indicator #F (e.g., the size of the FDRA field) are determined based on the bandwidths of carrier set #C and the frequency gap (s) between any two neighboring carriers within carrier set #C and the frequency resource allocation type for carrier set #C.
[0096] The frequency resource allocation type for carrier set #C may be predefined (e.g., in a standard) , configured by signaling (e.g., RRC signaling) or indicated by the DCI. In some embodiments, the frequency resource allocation types for carriers in carrier set #C may be independent of each other, for example, independently predefined or configured per carrier, or independently indicated by the DCI for each scheduled carrier. In some embodiments, the frequency resource allocation types for carriers in carrier set #C may be set at a common value, for example, predefined, configured or indicated as a common value. For example, the frequency resource allocation type for carrier set #C can be predefined as resource allocation type 0 (i.e., RBG-based resource allocation type) .
[0097] The frequency resources (e.g., RBs) in frequency resource set #C’ may be numbered contiguously for resource indication. In some cases, due to the contiguous frequency resource numbering for the entire set of carriers and the gaps, from the perspective of a UE, the total number of frequency resources may exceed the maximum number of frequency resources (e.g., the limitation of 275 RBs) that can be scheduled for a single cell.
[0098] From the perspective of a BS, the BS cannot schedule any frequency resources within the spectrum gaps as these frequency resources are only for the purpose of frequency resource indexing and are not available for transmission. From the perspective of the UE, the UE does not expect any frequency resources within the spectrum gaps indicated by the FDRA field for the purpose of scheduling. In some examples, if the above case happens (i.e., the UE receives a DCI scheduling frequency resource within the spectrum gaps) , the UE may neglect the DCI.
[0099] For example, assuming that carrier set #C includes N’ physical carriers, which are separated by M spectrum gaps, all the frequency resources (e.g., RBs) within the N physical carriers and M gaps can be jointly numbered for frequency resource indexing in, for example, an ascending order of frequencies. For example, referring to FIG. 3B, carrier set #C includes 4 physical carriers which are separated by 3 spectrum gaps (i.e., carriers 331-337 are separated by gaps 341-343) , and is associated with serving cell 320B. In some examples, carriers 331-337 may correspond to spectrums 211-217 in FIG. 2, respectively. In some embodiments, a DCI may schedule a single PDSCH or PUSCH carrying a single TB on serving cell 320B, more specifically on one or more carriers of carriers 311-317. It is assumed that carrier 331 includes K’ 1 RBs, gap 341 includes G1 RBs, carrier 333 includes K’ 2 RBs, gap 342 includes G2 RBs, carrier 335 includes K’ 3 RBs, gap 343 includes G3 RBs, and carrier 337 includes K’ 4 RBs, denoting Y’= K’ 1 + G1 + K’ 2 + G2 + K’ 3 + G3 + K’ 4, then these Y’ RBs can be contiguously numbered as RB0, RB1, …, RBY’-1 in the ascending order of frequencies. After determining the total Y’ RBs of frequency resource set #C’ , the UE then can further determine the DCI payload size and the FDRA field size of the DCI according to the applicable frequency resource allocation type. The UE can determine frequency resource set #F from the Y’ RBs based on the FDRA field and the frequency resource allocation type.
[0100] In some embodiments of the present disclosure, the DCI may schedule one or more TBs on carrier set #S. Each TB of the one or more TBs may be scheduled on a single carrier of carrier set #S, and at least one TB of the one or more TBs may be scheduled on each carrier of carrier set #S. In some embodiments, each TB of the one or more TBs may include a CRC part transmitted with the corresponding TB on the corresponding carrier.
[0101] In some embodiments, the one or more TBs may be scheduled on at least one data channel (e.g., a PDSCH or a PUSCH) . A single data channel may carry at least one TB. One or more data channels of the at least one data channel may be scheduled on each carrier of carrier set #S. In some embodiments, the frequency domain resource assignment indication in the DCI for a carrier of carrier set #Scan be applied to each of the one or more data channels on the carrier.
[0102] In some embodiments, the DCI may include one or more of the following fields for the one or more TBs: one or more MCS fields, one or more NDI fields, one or more RV fields, and one or more HARQ process number fields. For example, the DCI may include an MCS field, an NDI field, a RV field, and a HARQ process number field for each scheduled TB. For example, the DCI may include a single MCS field for the one or more TBs. That is, the one or more TBs share the same MCS field. For example, the DCI may include a HARQ process number field for each scheduled carrier.
[0103] In some embodiments, in the case that the DCI schedules downlink transmission, the UE may generate one or more HARQ-ACK information bits for the one or more TBs and transmit the generated HARQ-ACK information bits to the BS. For example, the UE may generate one HARQ-ACK information bit for each TB.
[0104] In some embodiments, indicator #F may include a set of FDRA fields. Each FDRA field may correspond to a carrier within carrier set #C. For example, the number of FDRA fields in the DCI may be equal to the number of carriers within carrier set #C. The applicable FDRA value may suggest that the corresponding carrier is scheduled while the inapplicable FDRA value may suggest that the corresponding carrier is not scheduled. In this way, the DCI can schedule the total frequency resources of the entire set of carriers with a separate FDRA field for each carrier. The number of bits (e.g., size) of each FDRA field in the DCI may be determined according to the bandwidth and the frequency resource allocation type of the corresponding carrier. The payload size of the DCI can be determined based on the bandwidth and the frequency resource allocation type of each carrier within carrier set #C, for example, the total size of all FDRA fields. The UE can determine frequency resource set #F on carrier set #Sbased on the set of FDRA fields (e.g., FDRA fields corresponding to carrier set #S) and respective frequency resource allocation types. The FDRA field for a certain carrier of carrier set #Scan be applied to all data channels scheduled on the carrier.
[0105] In some embodiments, the frequency resource allocation types for carrier set #C may be predefined (e.g., in a standard) , configured by signaling (e.g., RRC signaling) or indicated by the DCI. In some embodiments, the frequency resource allocation types for carriers in carrier set #C may be independent of each other, for example, independently predefined or configured per carrier, or independently indicated by the DCI for each scheduled carrier. In some embodiments, the frequency resource allocation types for carriers in carrier set #C may be set at a common value, for example, predefined, configured or indicated as a common value.
[0106] In some embodiments, indicator #F may include a set of FDRA fields. Each FDRA field may correspond to a carrier within carrier set #S. The FDRA field for a certain carrier of carrier set #Scan be applied to all data channels scheduled on the carrier. The number of FDRA fields in the DCI may be equal to the number of carriers within carrier set #S. The DCI format may include a scheduled carrier indicator indicating carrier set #Sfrom carrier set #C.
[0107] For example, the scheduled carrier indicator may point to one entry from a list of scheduled carrier combinations associated with carrier set #C. The list of scheduled carrier combinations may include one or more entries with each entry including a scheduled carrier combination including one or more carriers within carrier set #C. For example, the scheduled carrier indicator in the DCI may include an entry index. The indicated entry corresponds to carrier set #S. The list of scheduled carrier combinations may be preconfigured, predefined (e.g., in a standard) , or configured by signaling (e.g., RRC signaling) . The number of bits of the scheduled carrier indicator (e.g., the size of a scheduled carrier indicator field) in the DCI may be determined according to the number of entries in the list of scheduled carrier combinations. In the case that the list includes at least one entry which indicates all carriers of carrier set #C, the total frequency resources of the entire set of carriers can be scheduled by the DCI.
[0108] The number of bits (e.g., size) of each FDRA field in the DCI may be determined according to the bandwidth and the frequency resource allocation type of the corresponding carrier (i.e., the corresponding scheduled carrier) . The payload size of the DCI can be determined based on the list of scheduled carrier combinations and frequency resource allocation types of carriers in the list of scheduled carrier combinations. For example, for each entry in the carrier combination list, the total size of the FDRA fields is determined and the payload size of the DCI can be determined based on the maximum number among all total sizes of the FDRA fields. The UE can determine frequency resource set #F on carrier set #Sbased on the set of FDRA fields and respective frequency resource allocation types.
[0109] In some embodiments, the frequency resource allocation types for carrier set #C may be predefined (e.g., in a standard) , configured by signaling (e.g., RRC signaling) or indicated by the DCI. In some embodiments, the frequency resource allocation types for carriers in carrier set #C may be independent of each other, for example, independently predefined or configured per carrier or independently indicated by the DCI for each scheduled carrier. In some embodiments, the frequency resource allocation types for carriers in carrier set #C may be set at a common value, for example, predefined, configured or indicated as a common value.
[0110] In some embodiments, indicator #F may include the scheduled carrier indicator indicating carrier set #Sfrom carrier set #C. Descriptions of the scheduled carrier indicator in the foregoing embodiments can be applied here. Frequency resource set #F may include all frequency resources on carrier set #S. That is, if a carrier is indicated by the scheduled carrier indicator (i.e., the carrier is scheduled by the DCI) , then all the frequency resources of this carrier are scheduled. Variable frequency resource allocations can be realized based on variable carriers scheduled by a DCI (i.e., by the scheduled carrier indicator) . In this case, the DCI may not need to include any FDRA fields. This is practical and beneficial because carriers within carrier set #C may have narrow frequency bandwidths and the signaling overhead can be reduced. The payload size of the DCI and the number of bits (e.g., size) of indicator #F can be determined based on the number of entries in the list of scheduled carrier combinations.
[0111] In some embodiments, indicator #F may include a single FDRA field. For example, the FDRA field may indicate an entry from a FDRA table associated with carrier set #C. The indicated entry may indicate frequency resources for each carrier of carrier set #S.
[0112] For example, the FDRA table may include one or more entries with each entry including an applicable or inapplicable FDRA value for each carrier within carrier set #C. The inapplicable FDRA value may suggest that the corresponding carrier is not scheduled. The applicable FDRA value may be applied to all data channels scheduled on the corresponding carrier. That is, each entry of the FDRA table can indicate a scheduled carrier combination including one or multiple carriers within carrier set #C and frequency resource allocation (s) for the corresponding scheduled one or multiple carriers. For example, Table 1 as shown above can apply here.
[0113] Variable frequency resource allocation can be realized based on variable scheduled carriers and variable frequency resource allocations (e.g., different FDRA values) on each scheduled carrier. In some embodiments, considering that carriers within carrier set #C may have narrow frequency bandwidths, the possible frequency resource allocations for each carrier within carrier set #C may include a few frequency resource combinations.
[0114] The FDRA table may be preconfigured, predefined (e.g., in a standard) , or configured by signaling (e.g., RRC signaling) . The number of bits (e.g., size) of the FDRA field in the DCI may be determined according to the number of entries in the FDRA table. In the case that the FDRA table includes at least one entry which indicates full frequency resource allocation on each carrier in carrier set #C, the total frequency resources of the entire set of carriers can be scheduled by the DCI.
[0115] For example, the FDRA field in the DCI may include an entry index of the FDRA table. The indicated entry can indicate carrier set #Sand the frequency resource set #F on carrier set #S. For example, the indicated entry may include an applicable FDRA value for each carrier in carrier set #S. Frequency resource set #F can be determined based on the applicable FDRA value for each carrier in carrier set #Sand the frequency resource allocation type of the corresponding carrier. The payload size of the DCI and the number of bits (e.g., size) of indicator #F (e.g., the single FDRA field) can be determined based on the number of entries in the FDRA table.
[0116] The frequency resource allocation types for carrier set #C may be predefined (e.g., in a standard) , configured by signaling (e.g., RRC signaling) or indicated by the DCI. In some embodiments, the frequency resource allocation types for carriers in carrier set #C may be independent of each other, for example, independently predefined or configured per carrier, or independently indicated by the DCI for each scheduled carrier. In some embodiments, the frequency resource allocation types for carriers in carrier set #C may be set at a common value, for example, predefined, configured or indicated as a common value.
[0117] In some embodiments, indicator #F may include a single FDRA field for indicating frequency resource set #F from carrier set #C. For example, the FDRA field may indicate frequency resource set #F from a set of frequency resources (denoted as frequency resource set #D) including all frequency resources on carrier set #C excluding the frequency gap (s) between any two neighboring carriers within carrier set #C. That is, frequency resource set #D does not include the frequency gap (s) between two non-contiguous neighboring carriers within carrier set #C, if any. The payload size of the DCI and the number of bits of indicator #F (e.g., the size of the FDRA field) are determined based on the bandwidth and the frequency resource allocation type for carrier set #C. Here, the bandwidth for carrier set #C refers to the total bandwidth of all carriers in carrier set #C, excluding any possible gaps.
[0118] The frequency resource allocation type for carrier set #C may be predefined (e.g., in a standard) , configured by signaling (e.g., RRC signaling) or indicated by the DCI. In some embodiments, the frequency resource allocation types for carriers in carrier set #C may be independent of each other, for example, independently predefined or configured per carrier, or independently indicated by the DCI for each scheduled carrier. In some embodiments, the frequency resource allocation types for carriers in carrier set #C may be set at a common value, for example, predefined, configured or indicated as a common value. For example, the frequency resource allocation type for carrier set #C can be predefined as resource allocation type 0 (i.e., RBG-based resource allocation type) .
[0119] The frequency resources (e.g., RBs) in frequency resource set #D (e.g., the frequency resources of carrier set #C) may be numbered contiguously for resource indication. In some cases, due to the contiguous frequency resource numbering for the entire set of carriers, from the perspective of a UE, the total number of frequency resources of carrier set #C may exceed the maximum number of frequency resources (e.g., the limitation of 275 RBs) that can be scheduled for a single cell.
[0120] For example, assuming that carrier set #C includes N physical carriers, all the frequency resources (e.g., RBs) within the N physical carriers can be jointly numbered for frequency resource indexing in, for example, an ascending order of frequencies. An example is shown in FIG. 3A. As described above, the UE can determine a total of Y RBs of carrier set #C, and then can further determine the DCI payload size and the FDRA field size of the DCI according to the applicable frequency resource allocation type. The UE can determine frequency resource set #F from the Y RBs based on the FDRA field and the frequency resource allocation type. In some embodiments, a DCI may schedule one or more PDSCHs or PUSCHs carrying one or more TBs on serving cell 320A. For example, one or more PDSCHs or PUSCHs may be scheduled on each carrier of carriers 311-317.
[0121] In some embodiments, indicator #F may include a single FDRA field for indicating frequency resource set #F from carrier set #C. For example, the FDRA field may indicate frequency resource set #F from a set of frequency resources (denoted as frequency resource set #D’ ) including all frequency resources on carrier set #C and the frequency gap (s) between any two neighboring carriers within carrier set #C. That is, frequency resource set #D’ includes the frequency gap (s) between two non-contiguous neighboring carriers within carrier set #C, if any. The payload size of the DCI and the number of bits of indicator #F (e.g., the size of the FDRA field) are determined based on the bandwidths of carrier set #C and the frequency gap (s) between any two neighboring carriers within carrier set #C and the frequency resource allocation type for carrier set #C.
[0122] The frequency resource allocation type for carrier set #C may be predefined (e.g., in a standard) , configured by signaling (e.g., RRC signaling) or indicated by the DCI. In some embodiments, the frequency resource allocation types for carriers in carrier set #C may be independent of each other, for example, independently predefined or configured per carrier, or independently indicated by the DCI for each scheduled carrier. In some embodiments, the frequency resource allocation types for carriers in carrier set #C may be set at a common value, for example, predefined, configured or indicated as a common value. For example, the frequency resource allocation type for carrier set #C can be predefined as resource allocation type 0 (i.e., RBG-based resource allocation type) .
[0123] The frequency resources (e.g., RBs) in frequency resource set #D’ may be numbered contiguously for resource indication. In some cases, due to the contiguous frequency resource numbering for the entire set of carriers and the gaps, from the perspective of a UE, the total number of frequency resources may exceed the maximum number of frequency resources (e.g., the limitation of 275 RBs) that can be scheduled for a single cell.
[0124] From the perspective of a BS, the BS cannot schedule any frequency resources within the spectrum gaps as these frequency resources are only for the purpose of frequency resource indexing and are not available for transmission. From the perspective of the UE, the UE does not expect any frequency resources within the spectrum gaps indicated by the FDRA field for the purposes of scheduling. In some examples, if the above case happens (i.e., the UE receives a DCI scheduling frequency resource within the spectrum gaps) , the UE may neglect the DCI.
[0125] For example, assuming that carrier set #C includes N’ physical carriers, which are separated by M spectrum gaps, all the frequency resources (e.g., RBs) within the N physical carriers and M gaps can be jointly numbered for frequency resource indexing in, for example, an ascending order of frequencies. An example is shown in FIG. 3B. As described above, the UE can determine the total Y’ RBs of frequency resource set #D’, and then can further determine the DCI payload size and the FDRA field size of the DCI according to the applicable frequency resource allocation type. The UE can determine frequency resource set #F from the Y’ RBs based on the FDRA field and the frequency resource allocation type. In some embodiments, a DCI may schedule one or more PDSCHs or PUSCHs carrying one or more TBs on serving cell 320B. For example, one or more PDSCHs or PUSCHs may be scheduled on each carrier of carriers 331-337.
[0126] FIG. 4 illustrates a flowchart of method 400 for wireless communication in accordance with some embodiments of the present disclosure. Details described in all of the foregoing embodiments of the present disclosure are applicable for the embodiments shown in FIG. 4. In some examples, method 400 may be performed by a UE. In some embodiments, the UE may execute a set of instructions to control the functional elements of the UE to perform the described functions or operations. In some examples, a processor of the UE may cause the UE to perform method 400.
[0127] At 411, a UE may receive a DCI scheduling one or more TBs on a first set of carriers among a second set of carriers, wherein the second set of carriers is associated with a single serving cell and the DCI includes a first indicator indicating a first set of frequency resources on the first set of carriers. At 413, the UE may receive or transmit the one or more TBs on the first set of frequency resources on the first set of carriers based on the DCI.
[0128] In some embodiments, a payload size of the DCI is configured by signaling or determined based on a bandwidth of each carrier within the second set of carriers.
[0129] In some embodiments, the first indicator includes a set of frequency domain resource assignment (FDRA) fields with each corresponding to a carrier of the second set of carriers. In some embodiments, a payload size of the DCI is determined based on a bandwidth and a frequency resource allocation type of each carrier within the second set of carriers.
[0130] In some embodiments, the first indicator includes a set of FDRA fields with each corresponding to a carrier of the first set of carriers. In some embodiments, a payload size of the DCI is determined based on a list of scheduled carrier combinations associated with the second set of carriers and frequency resource allocation types of carriers in the list of scheduled carrier combinations.
[0131] In some embodiments, a size of each of the set of FDRA fields is based on a bandwidth of a corresponding carrier and a frequency resource allocation type of the corresponding carrier.
[0132] In some embodiments, the first indicator indicates the first set of carriers from a list of scheduled carrier combinations associated with the second set of carriers and the first set of frequency resources includes all frequency resources on the first set of carriers. In some embodiments, a payload size of the DCI and a size of the first indicator are determined based on a number of entries in the list of scheduled carrier combinations.
[0133] In some embodiments, the first indicator indicates an entry from a FDRA table associated with the second set of cells, and the entry indicates frequency resources for each carrier of the first set of carriers. In some embodiments, a payload size of the DCI and a size of the first indicator are determined based on a number of entries in the FDRA table.
[0134] In some embodiments, the first indicator indicates the first set of frequency resources from a second set of frequency resources including all frequency resources on the second set of carriers excluding frequency gap (s) between any two neighboring carriers within the second set of carriers. In some embodiments, a payload size of the DCI and a size of the first indicator are determined based on a bandwidth and a frequency resource allocation type for the second set of carriers.
[0135] In some embodiments, the first indicator indicates the first set of frequency resources from a second set of frequency resources including all frequency resources on the second set of carriers and frequency gap (s) between any two neighboring carriers within the second set of carriers. In some embodiments, a payload size of the DCI and a size of the first indicator are determined based on bandwidths of the second set of carriers and the frequency gap (s) between any two neighboring carriers within the second set of carriers and a frequency resource allocation type for the second set of carriers.
[0136] In some embodiments, frequency resource allocation types for the second set of carriers are predefined, configured by signaling or indicated by the DCI, either independently or at a common value.
[0137] In some embodiments, the DCI schedules a single TB on the first set of carriers. In some embodiments, the DCI includes a single MCS field, a single NDI field, a single RV field, and a single HARQ process number field for the single TB.
[0138] In some embodiments, each TB of the one or more TBs is scheduled on a single carrier of the first set of carriers, and at least one TB of the one or more TBs is scheduled on each carrier of the first set of carriers. In some embodiments, the DCI includes one or more MCS fields, one or more NDI fields, one or more RV fields, and one or more HARQ process number field for the one or more TBs.
[0139] In some embodiments, the DCI includes a single MCS field for the one or more TBs.
[0140] In some embodiments, the one or more TBs is scheduled on at least one data channel and one or more data channels of the at least one data channel is scheduled on each carrier of the first set of carriers. In some embodiments, a FDRA indication in the DCI for a carrier of the first set of carriers is applied to each of the one or more data channels on the carrier.
[0141] It should be appreciated by persons skilled in the art that the sequence of the operations in exemplary method 400 may be changed and some of the operations in exemplary method 400 may be eliminated or modified, without departing from the spirit and scope of the disclosure.
[0142] FIG. 5 illustrates a flowchart of method 500 for wireless communication in accordance with some embodiments of the present disclosure. Details described in all of the foregoing embodiments of the present disclosure are applicable for the embodiments shown in FIG. 5. In some examples, method 500 may be performed by a BS. In some embodiments, the BS may execute a set of instructions to control the functional elements of the BS to perform the described functions or operations. In some examples, a processor of the BS may cause the BS to perform method 500.
[0143] At 511, a BS may transmit, to a UE, a DCI scheduling one or more TBs on a first set of carriers among a second set of carriers, wherein the second set of carriers is associated with a single serving cell and the DCI includes a first indicator indicating a first set of frequency resources on the first set of carriers. At 513, the BS may transmit to the UE or receive from the UE the one or more TBs on the first set of frequency resources on the first set of carriers based on the DCI.
[0144] In some embodiments, a payload size of the DCI is configured by the BS for the UE via signaling, or is determined based on a bandwidth of each carrier within the second set of carriers.
[0145] In some embodiments, the first indicator includes a set of FDRA fields with each corresponding to a carrier of the second set of carriers. In some embodiments, a payload size of the DCI is determined based on a bandwidth and a frequency resource allocation type of each carrier within the second set of carriers.
[0146] In some embodiments, the first indicator includes a set of FDRA fields with each corresponding to a carrier of the first set of carriers. In some embodiments, a payload size of the DCI is determined based on a list of scheduled carrier combinations associated with the second set of carriers and frequency resource allocation types of carriers in the list of scheduled carrier combinations.
[0147] In some embodiments, a size of each of the set of FDRA fields is based on a bandwidth of a corresponding carrier and a frequency resource allocation type of the corresponding carrier.
[0148] In some embodiments, the first indicator indicates the first set of carriers from a list of scheduled carrier combinations associated with the second set of carriers and the first set of frequency resources includes all frequency resources on the first set of carriers. In some embodiments, a payload size of the DCI and a size of the first indicator are determined based on a number of entries in the list of scheduled carrier combinations.
[0149] In some embodiments, the first indicator indicates an entry from a FDRA table associated with the second set of cells, and the entry indicates frequency resources for each carrier of the first set of carriers. In some embodiments, a payload size of the DCI and a size of the first indicator are determined based on a number of entries in the FDRA table.
[0150] In some embodiments, the first indicator indicates the first set of frequency resources from a second set of frequency resources including all frequency resources on the second set of carriers excluding frequency gap (s) between any two neighboring carriers within the second set of carriers. In some embodiments, a payload size of the DCI and a size of the first indicator are determined based on a bandwidth and a frequency resource allocation type for the second set of carriers.
[0151] In some embodiments, the first indicator indicates the first set of frequency resources from a second set of frequency resources including all frequency resources on the second set of carriers and frequency gap (s) between any two neighboring carriers within the second set of carriers. In some embodiments, a payload size of the DCI and a size of the first indicator are determined based on bandwidths of the second set of carriers and the frequency gap (s) between any two neighboring carriers within the second set of carriers and a frequency resource allocation type for the second set of carriers.
[0152] In some embodiments, frequency resource allocation types for the second set of carriers are predefined, configured by the BS for the UE via signaling, or indicated by the DCI, either independently or at a common value.
[0153] In some embodiments, the DCI schedules a single TB on the first set of carriers. In some embodiments, the DCI includes a single MCS field, a single NDI field, a single RV field, and a single HARQ process number field for the single TB.
[0154] In some embodiments, each TB of the one or more TBs is scheduled on a single carrier of the first set of carriers, and at least one TB of the one or more TBs is scheduled on each carrier of the first set of carriers. In some embodiments, the DCI includes one or more MCS fields, one or more NDI fields, one or more RV fields, and one or more HARQ process number field for the one or more TBs.
[0155] In some embodiments, the DCI includes a single MCS field for the one or more TBs.
[0156] In some embodiments, the one or more TBs is scheduled on at least one data channel and one or more data channels of the at least one data channel is scheduled on each carrier of the first set of carriers. In some embodiments, a FDRA indication in the DCI for a carrier of the first set of carriers is applied to each of the one or more data channels on the carrier.
[0157] It should be appreciated by persons skilled in the art that the sequence of the operations in exemplary method 500 may be changed and some of the operations in exemplary method 500 may be eliminated or modified, without departing from the spirit and scope of the disclosure.
[0158] FIG. 6 illustrates an example of a UE 600 in accordance with aspects of the present disclosure. The UE 600 may include a processor 602, a memory 604, a controller 606, and a transceiver 608. The processor 602, the memory 604, the controller 606, or the transceiver 608, or various combinations thereof or various components thereof may be examples of means for performing various aspects of the present disclosure as described herein. These components may be coupled (e.g., operatively, communicatively, functionally, electronically, electrically) via one or more interfaces.
[0159] The processor 602, the memory 604, the controller 606, or the transceiver 608, or various combinations or components thereof may be implemented in hardware (e.g., circuitry) . The hardware may include a processor, a digital signal processor (DSP) , an application-specific integrated circuit (ASIC) , or other programmable logic device, or any combination thereof configured as or otherwise supporting a means for performing the functions described in the present disclosure.
[0160] The processor 602 may include an intelligent hardware device (e.g., a general-purpose processor, a DSP, a CPU, an ASIC, an FPGA, or any combination thereof) . In some implementations, the processor 602 may be configured to operate the memory 604. In some other implementations, the memory 604 may be integrated into the processor 602. The processor 602 may be configured to execute computer-readable instructions stored in the memory 604 to cause the UE 600 to perform various functions of the present disclosure.
[0161] The memory 604 may include volatile or non-volatile memory. The memory 604 may store computer-readable, computer-executable code including instructions when executed by the processor 602 cause the UE 600 to perform various functions described herein. The code may be stored in a non-transitory computer-readable medium such as the memory 604 or another type of memory. Computer-readable media includes both non-transitory computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. A non-transitory storage medium may be any available medium that may be accessed by a general-purpose or special-purpose computer.
[0162] In some implementations, the processor 602 and the memory 604 coupled with the processor 602 may be configured to cause the UE 600 to perform one or more of the functions described herein (e.g., executing, by the processor 602, instructions stored in the memory 604) . For example, the processor 602 may support wireless communication at the UE 600 in accordance with examples as disclosed herein. For example, the UE 600 may be configured to support means for performing the operations as described with respect to FIGS. 1-5.
[0163] For example, the UE 600 may be configured to support: a means for receiving a DCI scheduling one or more TBs on a first set of carriers among a second set of carriers, wherein the second set of carriers is associated with a single serving cell and the DCI includes a first indicator indicating a first set of frequency resources on the first set of carriers; and a means for receiving or transmitting the one or more TBs on the first set of frequency resources on the first set of carriers based on the DCI.
[0164] The controller 606 may manage input and output signals for the UE 600. The controller 606 may also manage peripherals not integrated into the UE 600. In some implementations, the controller 606 may utilize an operating system such as or other operating systems. In some implementations, the controller 606 may be implemented as part of the processor 602.
[0165] In some implementations, the UE 600 may include at least one transceiver 608. In some other implementations, the UE 600 may have more than one transceiver 608. The transceiver 608 may represent a wireless transceiver. The transceiver 608 may include one or more receiver chains 610, one or more transmitter chains 612, or a combination thereof.
[0166] A receiver chain 610 may be configured to receive signals (e.g., control information, data, or packets) over a wireless medium. For example, the receiver chain 610 may include one or more antennas for receive the signal over the air or wireless medium. The receiver chain 610 may include at least one amplifier (e.g., a low-noise amplifier (LNA) ) configured to amplify the received signal. The receiver chain 610 may include at least one demodulator configured to demodulate the receive signal and obtain the transmitted data by reversing the modulation technique applied during transmission of the signal. The receiver chain 610 may include at least one decoder for decoding the processing the demodulated signal to receive the transmitted data.
[0167] A transmitter chain 612 may be configured to generate and transmit signals (e.g., control information, data, or packets) . The transmitter chain 612 may include at least one modulator for modulating data onto a carrier signal, preparing the signal for transmission over a wireless medium. The at least one modulator may be configured to support one or more techniques such as amplitude modulation (AM) , frequency modulation (FM) , or digital modulation schemes like phase-shift keying (PSK) or quadrature amplitude modulation (QAM) . The transmitter chain 612 may also include at least one power amplifier configured to amplify the modulated signal to an appropriate power level suitable for transmission over the wireless medium. The transmitter chain 612 may also include one or more antennas for transmitting the amplified signal into the air or wireless medium.
[0168] It should be appreciated by persons skilled in the art that the components in exemplary UE 600 may be changed, for example, some of the components in exemplary UE 600 may be omitted or modified or a new component (s) may be added to exemplary UE 600, without departing from the spirit and scope of the disclosure. For example, in some embodiments, the UE 600 may not include the controller 606.
[0169] FIG. 7 illustrates an example of a processor 700 in accordance with aspects of the present disclosure. The processor 700 may be an example of a processor configured to perform various operations in accordance with examples as described herein. The processor 700 may include a controller 702 configured to perform various operations in accordance with examples as described herein. The processor 700 may optionally include at least one memory 704, which may be, for example, an L1 / L2 / L3 cache. Additionally, or alternatively, the processor 700 may optionally include one or more arithmetic-logic units (ALUs) 706. One or more of these components may be in electronic communication or otherwise coupled (e.g., operatively, communicatively, functionally, electronically, electrically) via one or more interfaces (e.g., buses) .
[0170] The processor 700 may be a processor chipset and include a protocol stack (e.g., a software stack) executed by the processor chipset to perform various operations (e.g., receiving, obtaining, retrieving, transmitting, outputting, forwarding, storing, determining, identifying, accessing, writing, reading) in accordance with examples as described herein. The processor chipset may include one or more cores, one or more caches (e.g., memory local to or included in the processor chipset (e.g., the processor 700) or other memory (e.g., random access memory (RAM) , read-only memory (ROM) , dynamic RAM (DRAM) , synchronous dynamic RAM (SDRAM) , static RAM (SRAM) , ferroelectric RAM (FeRAM) , magnetic RAM (MRAM) , resistive RAM (RRAM) , flash memory, phase change memory (PCM) , and others) .
[0171] The controller 702 may be configured to manage and coordinate various operations (e.g., signaling, receiving, obtaining, retrieving, transmitting, outputting, forwarding, storing, determining, identifying, accessing, writing, reading) of the processor 700 to cause the processor 700 to support various operations in accordance with examples as described herein. For example, the controller 702 may operate as a control unit of the processor 700, generating control signals that manage the operation of various components of the processor 700. These control signals include enabling or disabling functional units, selecting data paths, initiating memory access, and coordinating timing of operations.
[0172] The controller 702 may be configured to fetch (e.g., obtain, retrieve, receive) instructions from the memory 704 and determine a subsequent instruction (s) to be executed to cause the processor 700 to support various operations in accordance with examples as described herein. The controller 702 may be configured to track memory address of instructions associated with the memory 704. The controller 702 may be configured to decode instructions to determine the operation to be performed and the operands involved. For example, the controller 702 may be configured to interpret the instruction and determine control signals to be output to other components of the processor 700 to cause the processor 700 to support various operations in accordance with examples as described herein. Additionally, or alternatively, the controller 702 may be configured to manage flow of data within the processor 700. The controller 702 may be configured to control transfer of data between registers, ALUs, and other functional units of the processor 700.
[0173] The memory 704 may include one or more caches (e.g., memory local to or included in the processor 700 or other memory, such RAM, ROM, DRAM, SDRAM, SRAM, MRAM, flash memory, etc. In some implementations, the memory 704 may reside within or on a processor chipset (e.g., local to the processor 700) . In some other implementations, the memory 704 may reside external to the processor chipset (e.g., remote to the processor 700) .
[0174] The memory 704 may store computer-readable, computer-executable code including instructions that, when executed by the processor 700, cause the processor 700 to perform various functions described herein. The code may be stored in a non-transitory computer-readable medium such as system memory or another type of memory. The controller 702 and / or the processor 700 may be configured to execute computer-readable instructions stored in the memory 704 to cause the processor 700 to perform various functions. For example, the processor 700 and / or the controller 702 may be coupled with or to the memory 704, the processor 700, the controller 702, and the memory 704 may be configured to perform various functions described herein. In some examples, the processor 700 may include multiple processors and the memory 704 may include multiple memories. One or more of the multiple processors may be coupled with one or more of the multiple memories, which may, individually or collectively, be configured to perform various functions herein.
[0175] The one or more ALUs 706 may be configured to support various operations in accordance with examples as described herein. In some implementations, the one or more ALUs 706 may reside within or on a processor chipset (e.g., the processor 700) . In some other implementations, the one or more ALUs 706 may reside external to the processor chipset (e.g., the processor 700) . One or more ALUs 706 may perform one or more computations such as addition, subtraction, multiplication, and division on data. For example, one or more ALUs 706 may receive input operands and an operation code, which determines an operation to be executed. One or more ALUs 706 be configured with a variety of logical and arithmetic circuits, including adders, subtractors, shifters, and logic gates, to process and manipulate the data according to the operation. Additionally, or alternatively, the one or more ALUs 706 may support logical operations such as AND, OR, exclusive-OR (XOR) , not-OR (NOR) , and not-AND (NAND) , enabling the one or more ALUs 706 to handle conditional operations, comparisons, and bitwise operations.
[0176] The processor 700 may support wireless communication in accordance with examples as disclosed herein. For example, the processor 700 may be configured to support means for performing the operations as described with respect to FIGs. 1-5.
[0177] For example, the processor 700 may be configured to or operable to support: a means for receiving a DCI scheduling one or more TBs on a first set of carriers among a second set of carriers, wherein the second set of carriers is associated with a single serving cell and the DCI includes a first indicator indicating a first set of frequency resources on the first set of carriers; and a means for receiving or transmitting the one or more TBs on the first set of frequency resources on the first set of carriers based on the DCI.
[0178] For example, the processor 700 may be configured to or operable to support: a means for transmitting, to a UE, a DCI scheduling one or more TBs on a first set of carriers among a second set of carriers, wherein the second set of carriers is associated with a single serving cell and the DCI includes a first indicator indicating a first set of frequency resources on the first set of carriers; and a means for transmitting to the UE or receiving from the UE the one or more TBs on the first set of frequency resources on the first set of carriers based on the DCI.
[0179] It should be appreciated by persons skilled in the art that the components in exemplary processor 700 may be changed, for example, some of the components in exemplary processor 700 may be omitted or modified or a new component (s) may be added to exemplary processor 700, without departing from the spirit and scope of the disclosure. For example, in some embodiments, the processor 700 may not include the ALUs 706.
[0180] FIG. 8 illustrates an example of an NE 800 in accordance with aspects of the present disclosure. The NE 800 may include a processor 802, a memory 804, a controller 806, and a transceiver 808. The processor 802, the memory 804, the controller 806, or the transceiver 808, or various combinations thereof or various components thereof may be examples of means for performing various aspects of the present disclosure as described herein. These components may be coupled (e.g., operatively, communicatively, functionally, electronically, electrically) via one or more interfaces.
[0181] The processor 802, the memory 804, the controller 806, or the transceiver 808, or various combinations or components thereof may be implemented in hardware (e.g., circuitry) . The hardware may include a processor, a DSP, an ASIC, or other programmable logic device, or any combination thereof configured as or otherwise supporting a means for performing the functions described in the present disclosure.
[0182] The processor 802 may include an intelligent hardware device (e.g., a general-purpose processor, a DSP, a CPU, an ASIC, an FPGA, or any combination thereof) . In some implementations, the processor 802 may be configured to operate the memory 804. In some other implementations, the memory 804 may be integrated into the processor 802. The processor 802 may be configured to execute computer-readable instructions stored in the memory 804 to cause the NE 800 to perform various functions of the present disclosure.
[0183] The memory 804 may include volatile or non-volatile memory. The memory 804 may store computer-readable, computer-executable code including instructions when executed by the processor 802 cause the NE 800 to perform various functions described herein. The code may be stored in a non-transitory computer-readable medium such as the memory 804 or another type of memory. Computer-readable media includes both non-transitory computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. A non-transitory storage medium may be any available medium that may be accessed by a general-purpose or special-purpose computer.
[0184] In some implementations, the processor 802 and the memory 804 coupled with the processor 802 may be configured to cause the NE 800 to perform one or more of the functions described herein (e.g., executing, by the processor 802, instructions stored in the memory 804) . For example, the processor 802 may support wireless communication at the NE 800 in accordance with examples as disclosed herein. For example, the NE 800 may be configured to support means for performing the operations as described with respect to FIGs. 1-5.
[0185] For example, the NE 800 may be configured to support: a means for transmitting, to a UE, a DCI scheduling one or more TBs on a first set of carriers among a second set of carriers, wherein the second set of carriers is associated with a single serving cell and the DCI includes a first indicator indicating a first set of frequency resources on the first set of carriers; and a means for transmitting to the UE or receiving from the UE the one or more TBs on the first set of frequency resources on the first set of carriers based on the DCI.
[0186] The controller 806 may manage input and output signals for the NE 800. The controller 806 may also manage peripherals not integrated into the NE 800. In some implementations, the controller 806 may utilize an operating system such as or other operating systems. In some implementations, the controller 806 may be implemented as part of the processor 802.
[0187] In some implementations, the NE 800 may include at least one transceiver 808. In some other implementations, the NE 800 may have more than one transceiver 808. The transceiver 808 may represent a wireless transceiver. The transceiver 808 may include one or more receiver chains 810, one or more transmitter chains 812, or a combination thereof.
[0188] A receiver chain 810 may be configured to receive signals (e.g., control information, data, or packets) over a wireless medium. For example, the receiver chain 810 may include one or more antennas for receive the signal over the air or wireless medium. The receiver chain 810 may include at least one amplifier (e.g., an LNA) configured to amplify the received signal. The receiver chain 810 may include at least one demodulator configured to demodulate the receive signal and obtain the transmitted data by reversing the modulation technique applied during transmission of the signal. The receiver chain 810 may include at least one decoder for decoding the processing the demodulated signal to receive the transmitted data.
[0189] A transmitter chain 812 may be configured to generate and transmit signals (e.g., control information, data, or packets) . The transmitter chain 812 may include at least one modulator for modulating data onto a carrier signal, preparing the signal for transmission over a wireless medium. The at least one modulator may be configured to support one or more techniques such as AM, FM, or digital modulation schemes like PSK or QAM. The transmitter chain 812 may also include at least one power amplifier configured to amplify the modulated signal to an appropriate power level suitable for transmission over the wireless medium. The transmitter chain 812 may also include one or more antennas for transmitting the amplified signal into the air or wireless medium.
[0190] It should be appreciated by persons skilled in the art that the components in exemplary NE 800 may be changed, for example, some of the components in exemplary NE 800 may be omitted or modified or a new component (s) may be added to exemplary NE 800, without departing from the spirit and scope of the disclosure. For example, in some embodiments, the NE 800 may not include the controller 806.
[0191] Those having ordinary skill in the art would understand that the operations or steps of the methods described in connection with the aspects disclosed herein may be embodied directly in hardware, in a software module executed by a processor, or in a combination of the two. A software module may reside in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, a hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art. Additionally, in some aspects, the operations or steps of the methods may reside as one or any combination or set of codes and / or instructions on a non-transitory computer-readable medium, which may be incorporated into a computer program product.
[0192] While this disclosure has been described with specific embodiments thereof, it is evident that many alternatives, modifications, and variations may be apparent to those skilled in the art. The disclosure is not limited to the examples and designs described herein but is to be accorded with the broadest scope consistent with the principles and novel features disclosed herein. For example, various components of the embodiments may be interchanged, added, or substituted in other embodiments. Also, all of the elements of each figure are not necessary for the operation of the disclosed embodiments. For example, one of ordinary skill in the art of the disclosed embodiments would be enabled to make and use the teachings of the disclosure by simply employing the elements of the independent claims. Accordingly, embodiments of the disclosure as set forth herein are intended to be illustrative, not limiting. Various changes may be made without departing from the spirit and scope of the disclosure.
[0193] In this document, the terms "DCI" and "DCI format" may be used interchangeably. The terms "includes, " "including, " or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. An element proceeded by "a, " "an, " or the like does not, without more constraints, preclude the existence of additional identical elements in the process, method, article, or apparatus that includes the element. Also, the term "another" is defined as at least a second or more. The term "having" or the like, as used herein, is defined as "including. " Expressions such as "A and / or B" or "at least one of A and B" may include any and all combinations of words enumerated along with the expression. For instance, the expression "A and / or B" or "at least one of A and B" may include A, B, or both A and B. The wording "the first, " "the second" or the like is only used to clearly illustrate the embodiments of the present disclosure, but is not used to limit the substance of the present disclosure.
Claims
1.A user equipment (UE) , comprising:at least one memory; andat least one processor coupled with the at least one memory and configured to cause the UE to:receive downlink control information (DCI) scheduling one or more transport blocks (TBs) on a first set of carriers among a second set of carriers, wherein the second set of carriers is associated with a single serving cell and the DCI includes a first indicator indicating a first set of frequency resources on the first set of carriers; andreceive or transmit the one or more TBs on the first set of frequency resources on the first set of carriers based on the DCI.2.The UE of claim 1, wherein a payload size of the DCI is configured by signaling or determined based on a bandwidth of each carrier within the second set of carriers.3.The UE of claim 1, wherein the first indicator includes a set of frequency domain resource assignment (FDRA) fields with each corresponding to a carrier of the second set of carriers; andwherein a payload size of the DCI is determined based on a bandwidth and a frequency resource allocation type of each carrier within the second set of carriers.4.The UE of claim 1, wherein the first indicator includes a set of frequency domain resource assignment (FDRA) fields with each corresponding to a carrier of the first set of carriers; andwherein a payload size of the DCI is determined based on a list of scheduled carrier combinations associated with the second set of carriers and frequency resource allocation types of carriers in the list of scheduled carrier combinations.5.The UE of claim 1, wherein the first indicator indicates the first set of carriers from a list of scheduled carrier combinations associated with the second set of carriers and the first set of frequency resources comprises all frequency resources on the first set of carriers; andwherein a payload size of the DCI and a size of the first indicator are determined based on a number of entries in the list of scheduled carrier combinations.6.The UE of claim 1, wherein the first indicator indicates an entry from a frequency domain resource assignment (FDRA) table associated with the second set of cells, and the entry indicates frequency resources for each carrier of the first set of carriers; andwherein a payload size of the DCI and a size of the first indicator are determined based on a number of entries in the FDRA table.7.The UE of claim 1, wherein the first indicator indicates the first set of frequency resources from a second set of frequency resources comprising all frequency resources on the second set of carriers excluding frequency gap (s) between any two neighboring carriers within the second set of carriers; andwherein a payload size of the DCI and a size of the first indicator are determined based on a bandwidth and a frequency resource allocation type for the second set of carriers.8.The UE of claim 1, wherein the first indicator indicates the first set of frequency resources from a second set of frequency resources comprising all frequency resources on the second set of carriers and frequency gap (s) between any two neighboring carriers within the second set of carriers; andwherein a payload size of the DCI and a size of the first indicator are determined based on bandwidths of the second set of carriers and the frequency gap (s) between any two neighboring carriers within the second set of carriers and a frequency resource allocation type for the second set of carriers.9.The UE of claim 1, wherein the DCI schedules a single TB on the first set of carriers and wherein the DCI comprises a single modulation and coding scheme (MCS) field, a single new data indicator (NDI) field, a single redundancy version (RV) field, and a single hybrid automatic repeat request (HARQ) process number field for the single TB.10.A base station (BS) , comprising:at least one memory; andat least one processor coupled with the at least one memory and configured to cause the BS to:transmit, to a user equipment (UE) , downlink control information (DCI) scheduling one or more transport blocks (TBs) on a first set of carriers among a second set of carriers, wherein the second set of carriers is associated with a single serving cell and the DCI includes a first indicator indicating a first set of frequency resources on the first set of carriers; andtransmit to the UE or receive from the UE the one or more TBs on the first set of frequency resources on the first set of carriers based on the DCI.11.The BS of claim 10, wherein a payload size of the DCI is configured by the BS for the UE via signaling, or is determined based on a bandwidth of each carrier within the second set of carriers.12.The BS of claim 10, wherein the first indicator includes a set of frequency domain resource assignment (FDRA) fields with each corresponding to a carrier of the second set of carriers; andwherein a payload size of the DCI is determined based on a bandwidth and a frequency resource allocation type of each carrier within the second set of carriers.13.The BS of claim 10, wherein the first indicator includes a set of frequency domain resource assignment (FDRA) fields with each corresponding to a carrier of the first set of carriers; andwherein a payload size of the DCI is determined based on a list of scheduled carrier combinations associated with the second set of carriers and frequency resource allocation types of carriers in the list of scheduled carrier combinations.14.The BS of claim 10, wherein the first indicator indicates the first set of carriers from a list of scheduled carrier combinations associated with the second set of carriers and the first set of frequency resources comprises all frequency resources on the first set of carriers; andwherein a payload size of the DCI and a size of the first indicator are determined based on a number of entries in the list of scheduled carrier combinations.15.The BS of claim 10, wherein the first indicator indicates an entry from a frequency domain resource assignment (FDRA) table associated with the second set of cells, and the entry indicates frequency resources for each carrier of the first set of carriers; andwherein a payload size of the DCI and a size of the first indicator are determined based on a number of entries in the FDRA table.16.The BS of claim 10, wherein the first indicator indicates the first set of frequency resources from a second set of frequency resources comprising all frequency resources on the second set of carriers excluding frequency gap (s) between any two neighboring carriers within the second set of carriers; andwherein a payload size of the DCI and a size of the first indicator are determined based on a bandwidth and a frequency resource allocation type for the second set of carriers.17.The BS of claim 10, wherein the first indicator indicates the first set of frequency resources from a second set of frequency resources comprising all frequency resources on the second set of carriers and frequency gap (s) between any two neighboring carriers within the second set of carriers; andwherein a payload size of the DCI and a size of the first indicator are determined based on bandwidths of the second set of carriers and the frequency gap (s) between any two neighboring carriers within the second set of carriers and a frequency resource allocation type for the second set of carriers.18.The BS of claim 10, wherein the DCI schedules a single TB on the first set of carriers and wherein the DCI comprises a single modulation and coding scheme (MCS) field, a single new data indicator (NDI) field, a single redundancy version (RV) field, and a single hybrid automatic repeat request (HARQ) process number field for the single TB.19.A processor, comprising:at least one controller coupled with at least one memory and configured to cause the processor to:receive downlink control information (DCI) scheduling one or more transport blocks (TBs) on a first set of carriers among a second set of carriers, wherein the second set of carriers is associated with a single serving cell and the DCI includes a first indicator indicating a first set of frequency resources on the first set of carriers; andreceive or transmit the one or more TBs on the first set of frequency resources on the first set of carriers based on the DCI.20.A method for wireless communication, comprising:receiving downlink control information (DCI) scheduling one or more transport blocks (TBs) on a first set of carriers among a second set of carriers, wherein the second set of carriers is associated with a single serving cell and the DCI includes a first indicator indicating a first set of frequency resources on the first set of carriers; andreceiving or transmitting the one or more TBs on the first set of frequency resources on the first set of carriers based on the DCI.
Citation Information
Patent Citations
Method and system for transmission over multiple carriers
CN112385172A
Wireless communication method and apparatus for multi-cell scheduling signaling
CN118542048A
Downlink control information design for supporting single DCI scheduling for multiple cells
CN119096500A
Method and system for transmission over multiple carriers
US20200022143A1