Bandwidth part (BWP) configuration with shared partial configuration for non-terrestrial networks (NTN)
By providing multiple BWP configuration and reconfiguration mechanisms for user equipment, the problems of frequent beam switching and inefficient resource allocation in non-terrestrial networks are solved, thereby improving communication efficiency and quality.
Patent Information
- Application Number
- CN202180058392.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Priority Date
- 2021-07-30
- Filing Date
- 2021-08-02
- Publication Date
- 2025-11-07
- Estimated Expiration
- 2041-08-02
AI Technical Summary
In non-terrestrial networks, communication between user equipment and non-terrestrial entities involves frequent beam switching and high signaling capacity due to long distances and signal attenuation, resulting in inefficient resource allocation.
User equipment receives configurations for multiple bandwidth portions (BWPs) and reconstructs the BWPs based on these configurations to switch to the appropriate BWP for communication. This includes shared partial BWP configurations and independent parameter transformations, as well as optimizing BWP handover through methods such as frequency offset.
By optimizing the BWP configuration, the frequency and signaling overhead of beam switching were reduced, resource allocation efficiency was improved, and communication quality was enhanced.
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Figure CN116076052B_ABST
Abstract
Description
[0001] Cross-reference to related applications
[0002] This application claims priority to U.S. Patent Application No. 17 / 390,718, filed July 30, 2021, entitled “BANDWIDTH PART(BWP) CONFIGURATION WITH A SHARED PARTIAL CONFIGURATION FOR NON-TERRESTRIAL NETWORKS(NTNs),” which claims priority to U.S. Provisional Patent Application No. 63 / 062,294, filed August 6, 2020, entitled “BANDWIDTH PART(BWP) CONFIGURATION WITH A SHARED PARTIAL CONFIGURATION FOR NON-TERRESTRIAL NETWORKS(NTNs),” the disclosure of which is expressly incorporated herein by reference in its entirety. Technical Field
[0003] The various aspects of this disclosure generally relate to wireless communications, and more specifically, to techniques and apparatus for a shared partial configuration of a bandwidth portion (BWP) configuration for a non-terrestrial network (NTN). Background Technology
[0004] Wireless communication systems are widely deployed to provide a variety of telecommunications services, such as telephone, video, data, messaging, and broadcasting. Typical wireless communication systems may employ multiple access technologies capable of supporting communication with multiple users by sharing available system resources (e.g., bandwidth, transmit power, etc.). Examples of such multiple access technologies include Code Division Multiple Access (CDMA) systems, Time Division Multiple Access (TDMA) systems, Frequency Division Multiple Access (FDMA) systems, Orthogonal Frequency Division Multiple Access (OFDMA) systems, Single Carrier Frequency Division Multiple Access (SC-FDMA) systems, Time Division Synchronous Code Division Multiple Access (TD-SCDMA) systems, and Long Term Evolution (LTE). LTE / LTE-Advanced is a collection of enhancements to the Universal Mobile Telecommunications System (UMTS) mobile standard issued by the 3rd Generation Partnership Project (3GPP). Narrowband (NB)-Internet of Things (IoT) and Enhanced Machine-Type Communications (eMTC) are a collection of enhancements to LTE for machine-type communications.
[0005] A wireless communication network can include a number of base stations (BSs) that can support communication for a number of user equipment (UEs). A user equipment (UE) can communicate with a base station (BS) via the downlink and uplink. The downlink (or forward link) refers to the communication link from the BS to the UE, and the uplink (or reverse link) refers to the communication link from the UE to the BS. As will be described in more detail, a BS can be referred to as a Node B, an evolved Node B (eNB), a gNB, an access point (AP), a radio head, a transmit and receive point (TRP), a new radio (NR) BS, a 5G Node B, and / or the like.
[0006] These multiple access technologies have been adopted in various telecommunication standards to provide common protocols that enable different wireless devices to communicate on a municipal, national, regional, and even global level. New radio (NR), which can also be referred to as 5G, is a set of enhancements to the LTE mobile standard promulgated by the Third Generation Partnership Project (3GPP). NR is designed to better support mobile broadband Internet access by improving spectral efficiency, lowering costs, improving services, making use of new spectrum, and better integrating with other open standards using orthogonal frequency division multiplexing (OFDM) with a cyclic prefix (CP) (CP-OFDM) on the downlink (DL) and using CP-OFDM and / or SC-FDM (e.g., also known as discrete Fourier transform spread OFDM (DFT-s-OFDM)) on the uplink (UL). NR also supports beamforming, multiple input multiple output (MIMO) antenna technology, and carrier aggregation. SUMMARY
[0007] According to aspects of the present disclosure, a method performed by a user equipment (UE) receives a first message including a configuration for reconfiguring a bandwidth part (BWP) of a network device. The method also reconfigures the BWP based on the configuration. The method further switches from a current BWP to the reconfigured BWP to communicate with the network device.
[0008] In other aspects of the disclosure, an apparatus for wireless communication performed by a user equipment (UE) includes a processor and a memory coupled with the processor. Instructions stored in the memory are operable, when executed by the processor, to cause the apparatus to receive a first message including a configuration for reconfiguring a bandwidth part (BWP) for a network device. The apparatus can also reconfigure the BWP based on the configuration. The apparatus can further switch from a current BWP to the reconfigured BWP to communicate with the network device.
[0009] In other aspects of the disclosure, a user equipment (UE) includes means for receiving a first message including a configuration for reconstructing a bandwidth part (BWP) for a network device. The UE also includes means for reconstructing the BWP based on the configuration. The UE also includes means for switching from a current BWP to the reconstructed BWP to communicate with the network device.
[0010] In other aspects of the disclosure, a non-transitory computer-readable medium having program code recorded thereon is disclosed. The program code is executed by a user equipment (UE) and includes program code to receive a first message including a configuration for reconstructing a bandwidth part (BWP) for a network device. The UE also includes program code to reconstruct the BWP based on the configuration. The UE also includes program code to switch from a current BWP to the reconstructed BWP to communicate with the network device.
[0011] Aspects generally include a method, apparatus, system, computer program product, non-transitory computer-readable medium, user equipment, base station, wireless communication device, and processing system as substantially described with reference to and as illustrated by the drawings and specification.
[0012] The foregoing has outlined rather broadly the features and technical advantages of examples according to the disclosure in order that the detailed description that follows can be better understood. Additional features and advantages will be described hereinafter. The disclosed concepts and specific examples can be readily utilized as bases for modifying or designing other structures for carrying out the same purposes of the present disclosure. Such equivalent constructions without departing from the scope of the appended claims are intended to be covered. The features, their organization, and method of operation, and related advantages, of the concepts disclosed are better understood from the following description taken in connection with the accompanying drawings. Each of the drawings is provided for the purpose of illustration and description, and not as a definition of the limits of the disclosure. BRIEF DESCRIPTION OF DRAWINGS
[0013] In order that the features and advantages of the disclosure can be understood in detail, a more particular description will be rendered by specific descriptions below, some of which descriptions are illustrated in the accompanying drawings. It is to be understood that the various aspects are merely examples of implementing the concepts of the disclosure and are therefore not to be taken in a limiting sense. Like reference numerals can be used to denote like elements throughout the accompanying drawings. The detailed description set forth below in connection with the appended drawings is intended as a description of various aspects of the disclosure and is not intended to represent the only
[0014] Figure 1 is a block diagram conceptually illustrating an example of a wireless communication network, in accordance with various aspects of the present disclosure.
[0015] Figure 2 is a block diagram conceptually illustrating an example of a base station in communication with a user equipment (UE) in a wireless communication network, in accordance with various aspects of the present disclosure. is a block diagram conceptually illustrating an example of a wireless communication network, in accordance with various aspects of the present disclosure.
[0016] Figure 3 FIG. 1 is a diagram illustrating an example of a wireless communications system that supports one or more bandwidth part (BWP) configurations for a communication network in accordance with aspects of the present disclosure.
[0017] Figure 4 FIG. 2 is a diagram illustrating an example of a wireless communications system that supports bandwidth part (BWP) configurations for a communication network in accordance with aspects of the present disclosure.
[0018] Figure 5A 、 Figure 5B and Figure 5C FIG. 3 is a block diagram illustrating an example of a cell configuration in accordance with aspects of the present disclosure.
[0019] Figure 6 FIG. 4 is a diagram illustrating an example of applying a frequency offset to a frequency location and bandwidth configuration in accordance with aspects of the present disclosure.
[0020] Figure 7 FIG. 5 is a diagram illustrating an example process performed, for example, by a user equipment (UE), in accordance with various aspects of the present disclosure. DETAILED DESCRIPTION
[0021] Various aspects of the disclosure are described in further detail below. The disclosure may, however, be embodied in many different forms and should not be construed as limited to any specific structure or function presented throughout this disclosure. Rather, these aspects are provided as illustrative examples so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to others skilled in the art. Based on the teachings herein, one skilled in the art should appreciate that the scope of the disclosure is intended to cover any aspect of the disclosure and changes and modifications to the disclosure can be made without departing from the scope of the disclosure. For example, an apparatus can be implemented using any number of the aspects described. Further, an apparatus can be implemented using any number of the aspects described in combination with one another. Additionally, the scope of the disclosure is intended to cover any results that provide benefits or advantages. The disclosure should not be construed as limited to the aspects set forth in this disclosure for accomplishing such aspects. Rather, the aspects are intended to cover all alternatives, modifications and equivalents, such that the spirit and scope of the disclosure are intended to be accorded the broadest interpretation so as to encompass all such alternatives, modifications and equivalents. It is to be understood that any of the disclosed aspects of the disclosure can be embodied by one or more elements of a claim.
[0022] Several aspects of telecommunication systems will now be presented with reference to various apparatus and methods. These apparatus and methods will be described in the following detailed description and illustrated in the accompanying drawings by various blocks, modules, components, circuits, steps, processes, algorithms, etc. (collectively referred to as "elements"). These elements can be implemented using hardware, software, or combinations thereof. Whether such elements are implemented as hardware or software depends on the particular application and design constraints imposed on the overall system. It should be noted that while aspects can be described herein as a process or a method, the disclosure can be reflected in other forms. For example, the disclosure can be embodied in a hardware logic circuit, such as an integrated circuit, a field programmable gate array (FPGA), or a system on chip (SoC) that performs the functions described herein. The disclosure can also be embodied in a computer-readable medium, such as a floppy disk, a DVD, a CD, a RAM, a ROM, a flash memory, or a hard drive that stores computer instructions to cause a processor to perform the functions described herein. Finally, the disclosure can also be embodied in a computer program product that can be executed on computer-readable medium to cause a processor to perform the functions described herein.
[0023] It should be noted that while aspects can be described with terminology commonly associated with 5G and later wireless technologies, aspects of the present disclosure can be applied in other pre-5G or 5G-based communication systems as well, such as and including 3G and / or 4G technologies.
[0024] In some cases, a user equipment (UE) and a non-terrestrial entity can transmit control information or data messages using one or more beams associated with one or more bandwidth parts (BWPs). In some examples, the non-terrestrial entity can be a satellite or a high-altitude platform station (HAPS). In one example, the non-terrestrial entity and the UE can be thousands of kilometers apart. Due to the distance between the non-terrestrial entity and the UE, transmissions from the non-terrestrial entity can be degraded due to, for example, atmospheric effects, interference from other radio frequency sources, signal attenuation due to vegetation or structures, etc. Due to the mobility of the non-terrestrial entity and / or signal degradation, the UE can frequently switch beams. In some cases, one or more BWPs can be configured for each beam to accommodate different UE capabilities.
[0025] A BWP configuration can be signaled to a UE during a cell search operation. The BWP configuration can provide one or more downlink beam parameters, such as a frequency location and bandwidth, a subcarrier spacing, a cyclic prefix duration, cell-specific downlink control channel resources (e.g., control resource set (CORESET) zero, search space zero), and / or a time domain resource allocation for a downlink shared channel (e.g., a starting time and duration of a physical downlink shared channel (PDSCH)). The BWP configuration can provide uplink shared channel configuration (e.g., a time domain resource allocation pattern) and similar uplink beam parameters. Additionally, the BWP configuration can configure multiple options for a parameter. Selection or activation of a particular option can be provided via control signaling such as downlink control information (DCI), medium access control (MAC) control element (CE), or radio resource control (RRC) signaling. That is, the BWP configuration can configure multiple time domain resource allocation patterns for a downlink shared channel, and can select one of the configured time domain resource allocation patterns via DCI signaling.
[0026] Multiple BWP configurations can increase signaling and increase resources used by a UE. Thus, it is desirable to improve BWP configuration signaling. In accordance with aspects of the present disclosure, a UE receives a configuration for reconstructing bandwidth parts (BWPs) of multiple BWPs of a non-terrestrial entity. The configuration for reconstructing the BWPs can be referred to as a BWP configuration. The UE can reconstruct one of the BWPs based on the BWP configuration. Further, the UE can switch from a current BWP to the reconstructed BWP to communicate with the non-terrestrial entity. The BWP configuration can be received in a radio resource control (RRC) message or a system information block (SIB) message.
[0027] In some cases, the BWP configuration can be an initial BWP configuration. For example, the network entity can configure an initial downlink BWP and / or an initial uplink BWP. In some other cases, the BWP configuration (e.g., including a downlink BWP or uplink BWP configuration) can correspond to a reference BWP. In other cases, the BWP configuration can correspond to a shared partial BWP configuration. The shared partial BWP configuration can include a shared common portion and a shared dedicated portion.
[0028] The BWP configuration can be for a first non-terrestrial beam from a non-terrestrial entity. In some aspects, the non-terrestrial entity is currently serving the UE via the first non-terrestrial beam. In other aspects, the non-terrestrial entity is currently serving the UE via a second non-terrestrial beam, and the first non-terrestrial beam is one of a plurality of non-terrestrial beams of the non-terrestrial entity. In another configuration, the non-terrestrial entity is not serving the UE at the time the BWP configuration is received.
[0029] The UE can also receive an indication to transform the BWP based on the shared partial BWP configuration and one or more parameters independent of the shared partial BWP configuration. The transformation can include a frequency offset. In one example, the BWP is reconstructed by applying the frequency offset to a frequency of the shared partial BWP configuration.
[0030] As described above, the UE can receive a plurality of BWP configurations. In one implementation, the shared partial BWP configuration is one of a plurality of shared BWP configurations. Each of the plurality of shared partial BWP configurations is associated with a unique identifier. The UE can receive an identifier identifying the shared partial BWP configuration.
[0031] In one implementation, the UE switches to the reconstructed BWP before expiration of a timer. The timer can include a first value when the current BWP and the reconstructed BWP have the same shared partial BWP configuration. Additionally, the timer can include a second value when the current BWP and the reconstructed BWP have different shared partial BWP configurations. The first value is equal to or less than the second value. The value of the timer can be based on one or more information elements of the shared partial BWP configuration of the reconstructed BWP, whether the switch from the current BWP to the reconstructed BWP is an intra-beam switch or an inter-beam switch, and a UE capability.
[0032] Figure 1is a diagram illustrating a network 100 in which aspects of the present disclosure can be practiced. The network 100 can be a 5G or NR network or some other wireless network, such as an LTE network. The wireless network 100 can include a number of BSs 110 (shown as BS 110a, BS 110b, BS 110c, and BS 1 lOd) and other network entities. A BS is an entity that communicates with user equipment (UEs) and can also be referred to as a base station, a NR BS, a Node B, a gNB, a 5G Node B (NB), an access point, a transmit and receive point (TRP), and / or the like. Each BS can provide communication coverage for a particular geographic area. In 3GPP, the term “cell” can refer to a coverage area of a BS and / or a BS subsystem serving the coverage area, depending on the context in which the term is used.
[0033] BSs can be referred to as macro BS, small cell, femto cell, and / or other types of BSs. A macro cell can cover a relatively large geographic area (e.g., several kilometers in radius) and can allow unrestricted access by UEs with service subscriptions appropriate for the BS. A small cell can cover a relatively small geographic area and can allow unrestricted access by UEs with service subscriptions appropriate for the BS. A femto cell can cover a relatively small geographic area (e.g., a home) and can allow restricted access by UEs with service Figure 1 In an example as illustrated in FIG. 1, BS 110a can be a macro BS for a macro cell 102a, BS 110b can be a small cell for a small cell 102b, and BS 110c can be a femto cell for a femto cell 102c. A BS can support one or multiple (e.g., three) cells. The terms “eNB,” “base station,” “NR BS,” “gNB,” “TRP,” “AP,” “Node B,” “5G NB,” and “cell” can be used interchangeably.
[0034] In some aspects, a cell can not necessarily be stationary, and the geographic area of the cell can move according to the location of a mobile BS. In some aspects, the BSs can be interconnected to one another and / or to one or more other BSs or network nodes (not shown) in the wireless network 100 through various types of backhaul interfaces such as a direct physical connection, a virtual network, or the like using any appropriate transport network.
[0035] Wireless network 100 can also include relay stations. A relay station is an entity that can receive a transmission of data from an upstream station (e.g., a BS or a UE) and send a transmission of the data to a downstream station (e.g., a UE or a BS). A relay station can also be a UE that can relay transmissions for other UEs. In Figure 1 In the example shown in FIG. 1, relay station 1 lOd can communicate with macro BS 110a and UE 120d in order to facilitate communication between BS 110a and UE 120d. A relay station can also be referred to as a relay BS, a relay base station, a relay, and / or the like.
[0036] Wireless network 100 can be a heterogeneous network that includes BSs of different types, e.g., macro BSs, pico BSs, femto BSs, relay BSs, and / or the like. These different types of BSs can have different transmit power levels, different coverage areas, and different impacts on interference. For example, macro BSs can have a high transmit power level (e.g., 5 to 40 Watts) whereas pico BSs, femto BSs, and relay BSs can have lower transmit power levels (e.g., 0.1 to 2 Watts).
[0037] By way of example, the BSs 110 (shown as BS 110a, BS 110b, BS 110c, and BS 1 lOd) and the core network 130 can exchange communication via backhaul links 132 (e.g., SI, etc.). The base stations 110 can also communicate with one another, e.g., directly or indirectly (e.g., through core network 130) on other backhaul links (e.g., X2, etc.).
[0038] The core network 130 can be an evolved packet core (EPC), which can include at least one mobility management entity (MME), at least one serving gateway (S-GW), and at least one Packet Data Network (PDN) gateway (P-GW). The MME can be the control node that processes the signaling between the UEs 120 and the EPC. The S-GW can transfer data between UEs 120 and the P-GW, through which the UEs 120 can attach to the network. The P-GW can provide IP address allocation as well as other functions. The P-GW can be connected to the network operator IP services. The operator's IP services can include the Internet, an intranet, an IP multimedia subsystem (IMS), and a packet-switched (PS) streaming service.
[0039] The core network 130 can provide user authentication, access authorization, tracking, IP connectivity, and other access, routing, or mobility functions. One or more of the base stations 110 or access network controllers (ANC) can interface with the core network 130 through backhaul links 132 (e.g., SI, S2, etc.) and can perform radio
[0040] The UEs 120 (e.g., 120a, 120b, 120c) can be dispersed throughout the wireless network 100, and each UE can be stationary or mobile. A UE can also be referred to as an access terminal, a terminal, a mobile station, a subscriber unit, a station, etc. A UE can be a cellular phone (e.g., a smart phone), a personal digital assistant (PDA), a wireless modem, a wireless communication device, a handheld device, a laptop computer, a cordless phone, a wireless local loop (WLL) station, a tablet, a camera, a gaming device, a netbook, a smartbook, an ultrabook, a medical device or equipment, a biometric sensor / device, a wearable device such as a smart watch, smart clothing, smart glasses, a smart wrist band, smart jewelry (e.g., a smart ring, a smart bracelet), an entertainment device (e.g., a music or video device, or a satellite radio), a vehicular component or sensor, a smart meter / sensor, industrial manufacturing equipment, a global positioning system device, or any other suitable device that is configured to communicate via a wireless or wired medium.
[0041] One or more UEs 120 can establish a packet data unit (PDU) session for a network slice. In some cases, a UE 120 can select a network slice based on an application or a subscription service. By having different network slices serving different applications or subscriptions, a UE 120 can improve its resource utilization in the wireless network 100 while also meeting performance specifications of individual applications of the UE 120. In some cases, a network slice used by a UE 120 can be served by an AMF (not shown in FIG. 1) associated with one or both of a base station 110 or a core network 130. Further, session management for a network slice can be performed by a session management function (SMF). Figure 1
[0042] The UE 120 can include a bandwidth part (BWP) module 140. For brevity, only one UE 120d is shown including the BWP module 140. The BWP module 140 can receive a first message including a configuration for reconstructing a number of bandwidth parts (BWPs) of a network device, such as a non-terrestrial entity. The BWP module 140 can also reconstruct the number of BWPs based on the configuration. The BWP module 140 can further switch from a current BWP to a reconstructed BWP to communicate with the network device.
[0043] Some UEs can be considered machine-type communication (MTC) or evolved or enhanced machine-type communication (eMTC) UEs. MTC and eMTC UEs include, e.g., robots, drones, remote devices, sensors, meters, monitors, location tags, etc., that can communicate with a base station, another device (e.g., remote device), or some other entity. A wireless node can provide, for example, connectivity for or to a network (e.g., a wide area network such as the Internet or a cellular network) via a wired or wireless communication link. Some UEs can be considered Internet-of-Things (IoT) devices, and / or can be implemented as NB-IoT (narrowband internet of things) devices. Some UEs can be considered user equipment (UE). Some UEs can be considered user premises equipment (CPE). The UE 120 can be included inside a housing that houses the various components of the UE 120, such as processor components, memory components, and / or the like.
[0044] In general, any number of wireless networks can be deployed in a given geographic area. Each wireless network can support a particular RAT and can operate on one or more frequencies. A RAT can also be referred to as a radio technology, an air interface, and / or the like. Frequencies can also be referred to as carriers, frequency channels, and / or the like. Each frequency can support a single RAT in a given geographic area in order to avoid interference between wireless networks of different RATs. In some cases, NR or 5G RAT networks can be deployed.
[0045] In some aspects, two or more UEs 120 (e.g., shown as UE 120a and UE 120e) can communicate directly using one or more sidelink channels (e.g., without using a base station 110 as an intermediary to communicate with each other). For example, UE 120 can perform scheduling operations, resource selection operations, and / or other operations described elsewhere as being performed by the base station 110. For example, the base station 110 can configure the UE 120 via downlink control information (DCI), radio resource control (RRC) signaling, a medium access control- control element (MAC-CE), or via system information (e.g., a system information block (SIB)).
[0046] As described above, Figure 1 are provided as examples. Other examples can differ from what is described Figure 1 in connection with the described examples.
[0047] Figure 2 A block diagram of a design 200 of base station 110 and UE 120 is shown, where the UE can be one of the base stations and one of the UEs in Figure 1 The base station 110 can be equipped with T antennas 234a through 234t, and the UE 120 can be equipped with R antennas 252a through 252r, where in general T > 1 and R > 1.
[0048] At base station 110, a transmit processor 220 can receive data from a data source 212 for one or more UEs, select one or more modulation and coding schemes (MCSs) for each UE based at least in part on channel quality indicators (CQIs) received from that UE, process (e.g., encode and modulate) the data for each UE based at least in part on the MCS(s) selected for the UE, and provide data symbols for all UEs. Reducing the MCS decreases throughput but increases reliability of the transmission. Transmit processor 220 can also process system information (e.g., for semi-static resource partitioning information (SRPI), etc.) and control information (e.g., CQI requests, grants, upper layer signaling, etc.) and provide overhead symbols and control symbols. Transmit processor 220 can also generate reference symbols for reference signals (e.g., the cell-specific reference signal (CRS)) and synchronization signals (e.g., the primary synchronization signal (PSS) and secondary synchronization signal (SSS)). A transmit (TX) multiple-input multiple-output (MIMO) processor 230 can perform spatial processing (e.g., precoding) on the data symbols, the control symbols, the overhead symbols, and / or the reference symbols, if applicable, and can provide T output symbol streams to T modulators (MODs) 232a through 232t. Each modulator 232 can process a respective output symbol stream (e.g., for OFDM, etc.) to obtain an output sample stream. Each modulator 232 can further process (e.g., convert to analog, amplify, filter, and upconvert) the output sample stream to obtain a downlink signal. T downlink signals from modulators 232a through 232t can be transmitted via T antennas 234a through 234t, respectively. According to various aspects described in more detail below, the synchronization signals can be generated with location encoding to convey additional information.
[0049] At the UE 120, the antennas 252a through 252r can receive the downlink signals from the base station 110 and / or other base stations and can provide received signals to the demodulators (DEMODs) 254a through 254r, respectively. Each demodulator 254 can condition (e.g., filter, amplify, downconvert, and digitize) a received signal to obtain input samples. Each demodulator 254 can further process the input samples (e.g., for OFDM, etc.) to obtain received symbols. A MIMO detector 256 can obtain received symbols from all R demodulators 254a through 254r, perform MIMO detection on the received symbols if applicable, and provide detected symbols. A receive processor 258 can process (e.g., demodulate and decode) the detected symbols, provide decoded data for the UE 120 to a data sink 260, and provide decoded control information and system information to a controller / processor 280. The channel processor can determine reference signal received power (RSRP), received signal strength indicator (RSSI), reference signal received quality (RSRQ), channel quality indicator (CQI), etc. In some aspects, one or more components of UE 120 can be included in a housing.
[0050] On the uplink, at the UE 120, a transmit processor 264 can receive and process data from a data source 262 and control information (e.g., for reports including RSRP, RSSI, RSRQ, CQI, etc.) from the controller / processor 280. Transmit processor 264 can also generate reference symbols for one or more reference signals. The symbols from transmit processor 264 can be precoded by a TX MIMO processor 266 if applicable, further processed by modulators 254a through 254r (e.g., for DFT-s-OFDM, CP-OFDM, etc.), and transmitted to the base station 110. At the base station 110, the uplink signals from UE 120 and other UEs can be received by the antennas 234, processed by demodulators 254, detected by a MIMO detector 236 if applicable, and further processed by a receive processor 238 to obtain decoded data and control information sent by UE 120. The receive processor 238 can provide the decoded data to a data sink 239 and the decoded control information to a controller / processor 240. The base station 110 can include a communication unit 244 and communicate with the core network 130 via the communication unit 244. The core network 130 can include a communication unit 294, a controller / processor 290, and a memory 292.
[0051] The controller / processor 240 of the base station 110, the controller / processor 280 of the UE 120, and / or Figure 2Any other components of the base station 110 and UE 120 can perform or direct the operation of processes described above and / or other processes described elsewhere herein, e.g., processes described with regard to FIGs. 4-7. The memory 242 and 282 can store data and program codes for the base station 110 and UE 120, respectively. The scheduler 246 can schedule UEs for data transmission on the downlink and / or uplink. Figure 2 Any other components of the base station 110 and UE 120 can perform or direct the operation of processes described above and / or other processes described elsewhere herein, e.g., processes described with regard to FIGs. 4-7. The memory 242 and 282 can store data and program codes for the base station 110 and UE 120, respectively. The scheduler 246 can schedule UEs for data transmission on the downlink and / or uplink. Figure 7 The memory 242 and 282 can store data and program codes for the base station 110 and UE 120, respectively. The scheduler 246 can schedule UEs for data transmission on the downlink and / or uplink.
[0052] In some aspects, a UE 120 can include means for receiving a first message including a configuration of a bandwidth part (BWP) of a number of BWPs of a first non-terrestrial beam of a non-terrestrial entity; means for reconfiguring the BWP of the number of BWPs based on the configuration; and means for switching from a current BWP to the reconfigured BWP for communication with the non-terrestrial entity. Such means can include one or more components of UE 120 described in connection with Figure 2 In some aspects, a UE 120 can include means for receiving a first message including a configuration of a bandwidth part (BWP) of a number of BWPs of a first non-terrestrial beam of a non-terrestrial entity; means for reconfiguring the BWP of the number of BWPs based on the configuration; and means for switching from a current BWP to the reconfigured BWP for communication with the non-terrestrial entity. Such means can include one or more components of UE 120 described in connection with
[0053] As described above, Figure 2 are provided as examples. Other examples can differ from what is described in connection with Figure 2 For example, elements of the wireless network 100 can implement aspects of the wireless communication system 300.
[0054] Figure 3 is a diagram illustrating an example of a wireless communication system 300 that supports one or more bandwidth part (BWP) configurations for a communication network in accordance with aspects of the present disclosure. In some examples, the wireless communication system 300 can implement aspects of the wireless network 100 described with reference to Figure 1 For example, elements of the wireless network 100 can implement aspects of the wireless communication system 300. Figure 1 For example, elements of the wireless network 100 can implement aspects of the wireless communication system 300. Figure 1 For example, elements of the wireless network 100 can implement aspects of the wireless communication system 300.
[0055] In some wireless communication environments, beam switching can be frequent relative to other environments. In some cases, as Figure 3As shown in FIG. 3, network entity 320 can communicate with UE 315 via beams 330, which can be directional beams. Beams 330 can have beam coverage areas 335 (e.g., coverage areas of beams 330). For example, network entity 320 can communicate with UE 315 via first beam 330-a. Additionally or alternatively, network entity 320 can communicate using second beam 330-b or third beam 330-c. In some examples, UE 315 can derive a beam coverage area shape (e.g., hexagonal, circular, elliptical, etc.) based on a shape and structure of an antenna associated with beams 330. In some other examples, UE 315 can derive a beam size based on one or more power levels associated with beams 330. The shape and size of beam coverage areas 335 can depend on a distance of a transmitting device (e.g., network entity 320) from the surface of the Earth, a transmission angle, and the like. Further, adjacent coverage areas can have different shapes and sizes depending on the transmission angle and distance of the transmitting device. In some cases, beam coverage areas 335 can overlap. The speed of beam coverage areas 335 relative to network entity 320 can be small. In some other examples, the frequency of beam switching can depend on the mobility of UE 315 and / or a combination of the mobility of UE 315 and the mobility of the base station.
[0056] Network entity 320 can configure each beam 330 from a satellite (not shown) to have a cell with an initial BWP (e.g., an initial uplink BWP, an initial downlink BWP, or a pair of uplink and downlink BWPs) for each beam. Figure 3 Each pattern of beam coverage areas 335 in FIG. 3 can represent a different initial BWP. In some cases, each beam 330 can be associated with one or more BWPs in addition to the initial BWP, which UE 315 and network entity 320 can use to communicate. Network (e.g., network entity 320) can send a signal to UE 315 to use which BWP when beam coverage area 335 moves or UE 315 moves.
[0057] In some cases, one or more BWPs can be configured for each non-terrestrial beam 330 (e.g., satellite beam) of the UE 315. Each beam 330 can be configured with an initial uplink bandwidth part and an initial downlink bandwidth part. Each beam 330 can also be configured with a default uplink bandwidth part and a default downlink bandwidth part for the UE 315. Additional bandwidth parts can be configured for each satellite beam 330. As described above, the network entity 320 can configure the UE 315 with BWPs in the beams 330. The UE 315 can switch BWPs during a BWP switching operation, such as an inter-beam switch or an intra-beam switch. For an inter-beam switch, the UE 315 can switch from a BWP in a first beam 330-a to a BWP in a second beam 330-b. For example, if the UE 315 moves from a beam footprint 335 associated with the first beam 330-a to a beam footprint 335 associated with the second beam 330-b, the UE can switch from a BWP in the first beam 330-a to a BWP in the second beam 330-b. For an intra-beam BWP switch, the UE 315 can switch from a BWP to a different BWP in the same beam 330. For example, if the UE 315 performs a BWP switching operation without leaving the beam footprint 335 associated with the first beam 330-a, the UE 315 can switch from a BWP associated with the first beam 330-a to another BWP associated with the first beam 330-a. In some examples, the network entity 320 can configure one or more beams 330 as a single cell. In other examples, the network entity 320 can configure one or more beams 330 as separate cells or multiple cells. That is, each cell can include one or more beams 330 corresponding to a beam footprint 335.
[0058] In some examples, the UE 315 can determine the beams 330 for communication based on monitoring of broadcast messages from the satellite. For example, the satellite can broadcast one or more synchronization signal blocks (SSBs) to one or more UEs 315. The UE 315 can detect the SSB, which can include a master information block (MIB), a system information block (SIB) (e.g., a first type of SIB (SIB1)), or both. The UE 315 can decode the MIB to identify one or more parameters that can be used to detect and decode the SIB1. For example, the one or more parameters can include a bandwidth, a control resource set (CORESET), a search space, other parameters associated with resource allocation, or a combination associated with the SIB1. In some examples, the SIB1 can include location information (e.g., a pointer) corresponding to a second type of SIB (SIB2). The SIB2 can include one or more configurations of a BWP associated with the beams 330 for communication with the network entity 320. Additionally, or alternatively, the UE 315 can receive RRC signaling indicating one or more configurations of a BWP associated with the beams 330.
[0059] Due to the high mobility of the UE 315 relative to the network entity 320, the UE 315 can frequently switch BWP associated with one or more beams 330. As shown, the UE 315 can traverse seven different beam footprints 335 and can perform multiple BWP switching operations based on traversing the beam footprints 335. For example, the UE 315 can perform a BWP switching operation to switch from a BWP associated with a first beam 330-a, a second beam 330-b, or both based on the BWP configuration and the trajectory of the UE 315. Additionally, or alternatively, the UE 315 can switch to a different cell based on traversing the beam footprints 335. For example, the beam footprints 335 associated with the first beam 330-a, the second beam 330-b, and the third beam 330-c can be associated with a first cell, however, other beam footprints 335 can be associated with a different cell. Additionally, or alternatively, the beam footprints 335 associated with the first beam 330-a, the second beam 330-b, and the third beam 330-c can be associated with different cells. Figure 3
[0060] In some cases, the UE 315 can switch beams 330 within a coverage area of the network entity 320 or when moving from a first coverage area to a second coverage area. For example, the UE 315 can move from a beam coverage area 335 associated with a first beam 330-a to a beam coverage area 335 associated with a second beam 330-b. In such examples, the UE 315 can communicate with the network entity 320 on a second BWP and can switch from the first beam 330-a to the second beam 330-b when crossing into the beam coverage area 335 of the second beam 330-b. As a result of the beam switch, the UE 315 can also switch from the second BWP to the first BWP. Similarly, the UE 315 can switch from the second beam 330-b to another beam 330. The beam switch can be a result of the UE 315 moving, the network entity 320 moving or switching, or a combination thereof. In some examples, the UE 315 can switch from the first beam 330-a to the second beam 330-b based on a beam selection or beam refinement procedure, or based on detected interference or degraded signal quality on the first beam 330-a.
[0061] In some cases, the UE 315 can use multiple BWP configurations corresponding to BWP associated with a new beam during a BWP switching procedure, which can result in high signaling capacity and inefficient resource allocation at the UE 315 (e.g., due to BWP configuration signaling). In some examples, the UE 315 can receive one or more configurations for a BWP from the network entity 320 (e.g., after performing a beam switch operation from the first beam 330-a to the second beam 330-b). The UE 315 can receive BWP configurations corresponding to a BWP in the first beam 330-a, a BWP in a different beam 330 such as the second beam 330-b, or a BWP in a beam 330 from a different network entity 320. The BWP configurations can include a frequency shift (e.g., based on a reference BWP) or a time delay associated with the BWP switching procedure.
[0062] Figure 4 FIG. illustrates an example of a wireless communications system 400 that supports bandwidth part (BWP) configuration for wireless communications networks in accordance with aspects of the present disclosure. In some examples, the wireless communications system 400 can implement aspects of the wireless network 100, the wireless communications system 300, or both. The wireless communications system 400 can include a network entity 420, a UE 415, beams 430, beam coverage areas 435, and communication links 425. The network entity 420 can be an example of the network entity 320 as described with reference to Figure 3 The wireless communications system 400 can be an example of a non-terrestrial network (NTN), a terrestrial network, or a combination of an NTN and a terrestrial network.
[0063] In some cases, the coverage area 410 of the network entity 420 can include multiple beam footprints 435 corresponding to one or more beams 430 configured at the network entity 420 for communicating with one or more UEs 415. For example, the network entity 420 can use multiple antennas (not shown) to form one or more beams 430 (e.g., narrow beams) for communicating with one or more UEs 415. The beams 430 can operate on different frequency intervals (e.g., different BWPs) to reduce interference between the beams 430. That is, a first beam 430-a can operate using a different BWP than a second beam 430-b. In some examples, the network entity 420 can communicate with the UEs 415 using the beams 430 via one or more communication links 425. For example, the network entity 420 can transmit messages including control information to the UEs 415 via a communication link 425-a that can be used for downlink communications, while the UEs 415 and the network entity 420 can communicate using a communication link 425-b that can be used for uplink or downlink communications. The network entity 420 and the UEs 415 can use the first beam 430-a for uplink and downlink communications.
[0064] The network entity 420 and the UEs 415 can be thousands of kilometers apart, and electromagnetic waves can take some time to propagate the distance between the network entity 420 and the UEs 415. The propagation delay of an NTN can be many orders of magnitude larger than the propagation delay of a terrestrial network. As an example, the network entity 420 can be in an orbit such as a low Earth orbit, a medium Earth orbit, other non-geostationary Earth orbit, or a geostationary Earth orbit. In any of these examples, the network entity 420 can be thousands of kilometers from the Earth, and thus can be thousands of kilometers from the UEs 415. The distance traveled by a transmission can result in considerable signal degradation due to, for example, atmospheric effects, interference from other radio frequency sources, signal attenuation due to vegetation or structures, and the like.
[0065] Further, due to the high mobility of the UEs 415 relative to the network entity 420, the UEs 415 can frequently switch BWPs associated with one or more beams 430. For example, the UEs 415 can perform a BWP switching operation to switch from a BWP associated with the first beam 430-a, the second beam 430-b, or both, based on the BWP configuration 440. In some examples, the BWP configuration 440 can include a frequency location and bandwidth, a subcarrier spacing, a cyclic prefix duration, a control resource set (CORESET) configuration, a search space configuration, a physical downlink control channel (PDCCH) configuration, a physical uplink control channel (PUCCH) configuration, a physical uplink shared channel (PUSCH) configuration, or a combination thereof, for each BWP.
[0066] information for a search space of a downlink control channel (e.g., a physical downlink control channel (PDCCH)), a time-domain resource allocation of a downlink shared channel (e.g., a starting time and a duration of a physical downlink shared channel (PDSCH)), or a combination thereof. The information in the BWP configuration 440 can occupy a relatively large number of bits in a message. In some cases, the UE 415 can use multiple BWP configurations 440 corresponding to a BWP associated with a new beam during a beam switching procedure, which can result in high signaling capacity and inefficient resource allocation at the UE 415 (e.g., due to BWP configuration signaling in a cell search operation).
[0067] In some examples, the UE 415 can receive one or more configurations for a BWP from the network entity 420 (e.g., after performing a beam switching operation from the first beam 430-a to the second beam 430-b). For example, the UE 415 can receive the BWP configuration 440 from the network entity 420 via the communication link 425-a. The UE 415 can receive a BWP configuration corresponding to a BWP in the first beam 430-a, a BWP in a different beam 330 such as the second beam 430-b, or a BWP in the beam 430 from a different network entity 420. For example, the network entity 420 can transmit the bandwidth part configuration 440 using a SIB1, another SIB, or an RRC message.
[0068] In some cases, a BWP can be an initial BWP. For example, the network entity 420 can configure multiple initial downlink BWPs, multiple initial uplink BWPs, or both for each cell, where each cell can include one or more beams 430. Each beam 430 can share an initial downlink BWP, an initial uplink BWP, or both with another beam 430. For example, the second beam 430-b can share an initial BWP with a third beam 430-c having a relatively lower interference (e.g., because the second beam 430-b and the third beam 430-c are relatively far away).
[0069] In some cases, BWP configuration 440 may include BWP configuration 440 for each BWP associated with the second beam 430-b. In other cases, BWP configuration 440 (e.g., including downlink BWP or uplink BWP configuration) may correspond to a reference BWP. In some cases, the reference BWP may be located within the first beam 430-a. For example, a downlink BWP, an uplink BWP, or both of the first beam 430-a may be configured with reference to another downlink BWP, another uplink BWP, or both of the first beam 430-a. Alternatively or alternatively, the reference BWP may be located within a different beam 430 (e.g., the second beam 430-b). In some cases, the different beams may originate from network entity 420 or another network entity 420. That is, one or more BWPs associated with the first beam 430-a from network entity 420 may be configured with reference to another BWP associated with a beam 430 from a different network entity 420. In some examples, network entity 420 can determine that the downlink BWP has the same IE as the information element (IE) corresponding to the reference downlink BWP. Network entity 420 can avoid sending the IE to UE 415 in BWP configuration 440, and can indicate the identifier of the reference downlink BWP, and can further indicate which IEs are the same.
[0070] In some other cases, BWP configuration 440 (e.g., including downlink BWP or uplink BWP configuration) may correspond to a shared portion of the BWP.
[0071] As described above, the UE and non-terrestrial entities can use one or more beams associated with one or more bandwidth portions (BWPs) to transmit control information or data messages. In some examples, the non-terrestrial entity can be a satellite or a High Altitude Platform Station (HAPS). Due to the distance between the non-terrestrial entity and the UE, transmissions from the non-terrestrial entity may be degraded. Due to beam degradation, the UE can switch satellite beams, perform intra-beam BWP transitions, or inter-beam BWP transitions.
[0072] As described above, each beam of a non-terrestrial entity (such as a satellite beam) is mapped to a cell. In a non-terrestrial network (NTN), satellites can use multiple antennas to form multiple narrow beams. As mentioned above, beams (e.g., satellite beams) can operate on non-overlapping frequency intervals (e.g., different BWPs) to mitigate interference between satellite beams.
[0073] Figure 5A This is a block diagram illustrating an example of a cell configuration according to aspects of this disclosure. For example... Figure 5A As shown, each beam can be configured as a separate cell (in Figure 5AThe diagram shows cells 0-7. Each cell corresponds to one of multiple BWPs (in...). Figure 5A (shown as BWP1-BWP4). Figure 5B This is a block diagram illustrating another example of a cell configuration according to aspects of this disclosure. (See diagram below.) Figure 5B As shown, the beam can be configured as a group of cells (in Figure 5B (Shown as cell 0 and cell 1). Each cell corresponds to one of multiple BWPs (in... Figure 5B (shown as BWP1-BWP4). Figure 5C This is a block diagram illustrating another example of a cell configuration according to aspects of this disclosure. (See diagram below.) Figure 5C As shown, the beam can be configured as a cell (in Figure 5C (Shown as cell 0). Each cell corresponds to one of multiple BWPs (in...) Figure 5C (shown as BWP1-BWP4). Figures 5A to 5C In this configuration, each cell has a beam coverage area 502. For each satellite beam, more than one BWP can be configured within the frequency interval. For example, multiple BWPs can be configured to accommodate different UE capabilities.
[0074] In addition to handovers due to beam degradation, or as an alternative, the UE can perform handovers due to non-ground entity mobility (e.g., satellite movement). That is, due to non-ground entity mobility, the UE can switch satellite beams, perform intra-beam BWP transitions, or inter-beam BWP transitions. Therefore, the UE can be configured to have multiple BWP configurations to enable handover.
[0075] One or more BWP configurations can be sent to the UE via signals. In some cases, the BWP configuration includes multiple parameters. The selection or activation of specific parameters can be indicated via control signaling, such as Downlink Control Information (DCI), Media Access Control (MAC) Control Element (CE), or Radio Resource Control (RRC) signaling. For example, the BWP configuration can configure multiple time-domain resource allocation patterns for the downlink shared channel, and one of the configured time-domain resource allocation patterns can be selected via DCI signaling.
[0076] As mentioned above, multiple BWP configurations can increase signaling and the resources used by the UE. Therefore, it is desirable to improve BWP configuration signaling. Aspects of this disclosure reduce BWP configuration signaling by providing messages that include BWP configurations for reconfiguring the BWP.
[0077] According to aspects of the present disclosure, a UE receives a configuration for a BWP of a beam of a non-terrestrial entity. The configuration for the BWP can be referred to as a BWP configuration. The BWP configuration can be a shared partial BWP configuration, a reference BWP configuration, or an initial BWP configuration. A shared partial BWP configuration will be described in more detail below. A reference configuration refers to a BWP being configured based on a difference from a full configuration of a reference BWP. An initial BWP configuration refers to a configuration from scratch.
[0078] The UE can reconstruct a BWP of the plurality of BWPs based on the BWP configuration. Further, the UE can switch from a current BWP to the reconstructed BWP for communicating with the non-terrestrial entity. The BWP configuration can be received, for example, in a radio resource control (RRC) message or a system information block (SIB) message.
[0079] The BWP configuration can be for a first non-terrestrial beam from the non-terrestrial entity. In one configuration, the non-terrestrial entity is currently serving the UE via the first non-terrestrial beam. In another configuration, the non-terrestrial entity is currently serving the UE via a second non-terrestrial beam, and the first non-terrestrial beam is one of a plurality of non-terrestrial beams of the non-terrestrial entity. In another configuration, the non-terrestrial entity is not serving the UE at the time the BWP configuration is received. For example, the beam can be from another satellite.
[0080] In some implementations, the BWP configuration is a shared partial BWP configuration. The shared partial BWP configuration can provide one or more downlink beam parameters and uplink beam parameters. For example, downlink (DL) BWP parameters (e.g., configuration) can include a frequency location and bandwidth, a subcarrier spacing (SCS), a cyclic prefix (CP) duration, a control resource set (CORESET) indication, and a search space indication. Uplink (UL) BWP parameters can include, for example, a frequency location and bandwidth, a subcarrier spacing, a cyclic prefix duration, a cell-specific uplink control channel resource, and an uplink shared channel configuration.
[0081] According to aspects of the present disclosure, the shared partial BWP configuration can be a building block for configuring one or more BWPs of a UE. The BWP can be configured as a combination of the shared partial BWP configuration, one or more parameters not included in the shared partial BWP configuration, and / or a transformation.
[0082] In some implementations, the transformation can include a frequency offset applied to a frequency location and bandwidth configuration indicated in the shared partial BWP configuration. Figure 6 is a diagram illustrating an example of applying a frequency offset to a frequency location and bandwidth configuration according to aspects of the present disclosure. As shown in FIG. 4, a shared partial BWP configuration 400 can include a frequency location and bandwidth configuration 402. The frequency location and bandwidth configuration 402 can be indicated in the shared partial BWP configuration 400. A frequency offset 404 can be applied to the frequency location and bandwidth configuration 402. The frequency offset 404 can be indicated in the shared partial BWP configuration 400. The frequency offset 404 can be applied to the frequency location and bandwidth configuration 402 to obtain a frequency location and bandwidth configuration 406. Figure 6As shown, a frequency (shown as F0) and a bandwidth (shown as B) are obtained from the shared BWP configuration. The first bandwidth part 602 is based on the shared BWP configuration. A frequency offset (shown as F_offset) is applied to the frequency (F0) to obtain a transformed frequency. The second BWP 604 is derived from the shared BWP configuration and the frequency offset.
[0083] In some configurations, a shared partial BWP configuration is associated with an identifier. Multiple shared partial BWP configurations can be configured for a UE. The network can identify which shared partial BWP configuration should be used by signaling the identifier.
[0084] In some implementations, a shared partial BWP configuration can be a combination of a shared common part and a shared dedicated part. The shared common part (e.g., shared among BWPs) is separated from a common part of the shared partial BWP configuration that is unique to a BWP (e.g., not shared among BWPs). The shared dedicated part is separated from a dedicated part of the shared partial BWP configuration that is unique to a BWP.
[0085] For downlink BWP configurations, the shared common part can include, for example, a frequency location and bandwidth, a subcarrier spacing, a cyclic prefix duration, a downlink control channel resource (e.g., CORESET zero), and / or a search space configuration (e.g., search space zero). The shared common part that is unique to a UE can include a time domain resource allocation pattern for a downlink shared channel (e.g., physical downlink shared channel (PDSCH)). The shared dedicated part can include a semi-persistent scheduling (SPS) configuration or a UE-specific control channel resource. The shared dedicated part that is unique to a UE can include a radio link monitoring configuration.
[0086] For uplink BWP configurations, the shared common part can include a frequency location and bandwidth, a subcarrier spacing, a cyclic prefix duration, or a cell-specific uplink control channel (e.g., physical uplink control channel (PUCCH)) resource. The shared common part that is unique to a BWP can include random access parameters. The shared dedicated part can include a shared uplink channel (e.g., physical uplink shared channel (PUSCH) configuration). The shared dedicated part that is unique to a BWP can include a channel sounding reference signal (SRS) configuration.
[0087] As described above, the shared partial BWP configuration can be associated with an identifier. In this case, the network configures a specific shared partial BWP configuration by signaling the identifier. Further, the shared partial BWP configuration can include a common part and a dedicated part. Table 1 provides an example of an identifier (ID) of an information element for downlink BWP configuration. As shown in Table 1, the ID can include a BWP identifier (shown as bwp-Id), a shared common downlink part (shown as bwp-Common-shared-Id), a unique common downlink part (shown as bwp-Common), a shared dedicated part (shown as bwp-Dedicated-shared-Id), and a unique dedicated part (shown as bwp-Dedicated).
[0088] Table 1
[0089]
[0090] In Table 1, BWP-DownlinkCommon-Shared-Id is an identifier that defines information elements (BWP-DownlinkCommon-Shared) included in the shared common part. In addition, BWP-DownlinkDedicated-Shared-Id is an identifier for defining information elements (BWP-DownlinkDedicated-Shared) included in the shared dedicated part. BWP-DownlinkCommon-Not-shared defines information elements not included in the information elements corresponding to BWP-DownlinkCommon-Shared. In some examples, the ID BWP-Common-Shared-Id is not included in the BWP configuration. In this example, the BWP-DownlinkCommon-Not-shared is simplified as BWP-DownlinkCommon.
[0091] In some implementations, the timing threshold is associated with two BWPs for a BWP switching operation. The timing threshold can be referred to as a BWP switching delay. In these implementations, the switching (e.g., transition) from the first BWP to the second BWP should occur before the timing threshold expires. If the UE switches between two BWPs with the same partial BWP configuration, the value of the timing threshold can be set to a first value. If the UE switches between two BWPs with different shared partial BWP configurations, the value of the timing threshold can be set to a second value. The first value can be less than or equal to the second value. The value of the timing threshold can also depend on the information elements included in the shared partial BWP configuration. The value of the timing threshold can also depend on whether the beam of the first BWP is different from the beam of the second BWP (e.g., whether the BWP switch is intra-beam or inter-beam). The value of the timing threshold can also depend on a UE capability.
[0092] As described above, Figures 3 to 6 are provided as examples. Other examples can differ from what is described with respect to at least one of the Figures 3 to 6 described.
[0093] Figure 7 FIG. 7 is a diagram illustrating an example process 700 performed, for example, by a BS, in accordance with various aspects of the present disclosure. Process 700 is an example of a bandwidth part (BWP) configuration with shared partial configuration for non-terrestrial networks (NTNs).
[0094] As Figure 7 indicated, in some aspects, process 700 can include receiving a first message including a configuration of a bandwidth part (BWP) for a reconfigured network device (block 702). For example, the UE (e.g., using antenna 252, DEMOD / MOD 254, MIMO detector 256, receive processor 258, controller / processor 280, and / or memory 282) can receive the first message. The network device can be a non-terrestrial entity, and the BWP can be for a first non-terrestrial beam of the non-terrestrial entity. The configuration can indicate a transition of the BWP. The BWP configuration can be a shared partial BWP configuration, which can include a shared common portion and a shared dedicated portion. The configuration can also be a reference BWP configuration or an initial BWP configuration. The shared partial BWP configuration can provide one or more downlink beam parameters and uplink beam parameters. For example, the downlink (DL) BWP parameters (e.g., configuration) can include a frequency location and bandwidth, a subcarrier spacing (SCS), a cyclic prefix (CP) duration, a control resource set (COREST) indication, and a search space indication. The uplink (UL) BWP parameters can include, for example, a frequency location and bandwidth, a subcarrier spacing, a cyclic prefix duration, a cell-specific uplink control channel resource, and an uplink shared channel configuration.
[0095] AsFigure 7 In some aspects, process 700 can include reconfiguring the BWP based on the configuration (block 704). For example, the UE (e.g., using antenna 252, DEMOD / MOD 254, MIMO detector 256, TX MIMO processor 266, receive processor 258, transmit processor 264, controller / processor 280, and / or memory 282) can reconfigure the BWP based on the configuration. The BWP can be configured as a combination of the shared partial BWP configuration, one or more parameters not included in the shared partial BWP configuration, and / or a transformation.
[0096] In some aspects, process 700 can include switching from a current BWP to the reconfigured BWP to communicate with the network device (block 706). For example, the UE (e.g., using antenna 252, DEMOD / MOD 254, MIMO detector 256, TX MIMO processor 266, receive processor 258, transmit processor 264, controller / processor 280, and / or memory 282) can switch from a current BWP to the reconfigured BWP to communicate with the non-terrestrial entity. For example, the switch can occur as a result of a beam degradation, or due to non-terrestrial entity mobility (e.g., movement of a satellite). That is, due to non-terrestrial entity mobility, the UE can switch satellite beams, perform intra-beam BWP transformation, or inter-beam BWP transformation. The UE can be configured with multiple BWP configurations to enable the switch.
[0097] Examples of implementations are described in the following numbered clauses:
[0098] 1. A method for wireless communication performed by a user equipment (UE), comprising:
[0099] receiving a first message comprising a configuration for reconfiguring a bandwidth part (BWP) of a network device;
[0100] reconfiguring the BWP based on the configuration; and
[0101] switching from a current BWP to the reconfigured BWP to communicate with the network device.
[0102] 2. The method of clause 1, further comprising:
[0103] receiving an indication to transform the configuration, the configuration being a shared partial BWP configuration; and
[0104] receiving at least one parameter that is not related to the shared partial BWP configuration.
[0105] 3. The method of clause 1 or 2, wherein the indication for transforming comprises a frequency offset, and reconstructing the BWP comprises applying the frequency offset to a frequency of the shared partial BWP configuration.
[0106] 4. The method of any of the preceding clauses, wherein the shared partial BWP configuration comprises a shared common portion and a shared dedicated portion.
[0107] 5. The method of any of the preceding clauses, wherein the configuration comprises a shared partial BWP configuration, a reference BWP configuration, or an initial BWP configuration.
[0108] 6. The method of any of the preceding clauses, wherein:
[0109] the configuration is a shared partial BWP configuration; and
[0110] the BWP is one of a plurality of BWPs.
[0111] 7. The method of any of the preceding clauses, wherein the configuration is a shared partial BWP configuration, comprising:
[0112] a downlink (DL) BWP configuration comprising a DL frequency location and bandwidth for the shared partial DL BWP, a first subcarrier spacing, a first cyclic prefix duration, a control resource set (COREST) indication, and a search space indication; and
[0113] an uplink (UL) BWP configuration comprising a UL frequency location and bandwidth for the shared partial UL BWP, a second subcarrier spacing, a second cyclic prefix duration, a cell-specific UL control channel resource, and an uplink shared channel configuration.
[0114] 8. The method of any of the preceding clauses, wherein:
[0115] the configuration is one of a plurality of shared BWP configurations; and
[0116] each of the plurality of shared partial BWP configurations is associated with a unique identifier; and the method further comprises receiving the unique identifier for identifying one of the shared partial BWP configurations.
[0117] 9. The method of any of the preceding clauses, the method further comprising switching to the reconstructed BWP prior to expiration of a timer.
[0118] 10. The method of any of the preceding clauses, wherein the timer comprises:
[0119] a first value when the current BWP and the reconfigured BWP have a same shared partial BWP configuration; or
[0120] a second value when the current BWP and the reconfigured BWP have different shared partial BWP configurations, the first value being equal to or less than the second value.
[0121] 11. The method of any of the preceding clauses, wherein the value of the timer is further based on at least one of an information element of the shared partial BWP configuration of the reconfigured BWP, whether a switch from the current BWP to the reconfigured BWP is an intra-beam switch or an inter-beam switch, a UE capability, or a combination thereof.
[0122] 12. The method of any of the preceding clauses, wherein the network device comprises a non-terrestrial entity, and the BWP is used on a first non-terrestrial beam of the non-terrestrial entity.
[0123] 13. The method of any of the preceding clauses, wherein:
[0124] the non-terrestrial entity is currently serving the UE via the first non-terrestrial beam;
[0125] the non-terrestrial entity is currently serving the UE via a second non-terrestrial beam, and the first non-terrestrial beam is one of a plurality of non-terrestrial beams of the non-terrestrial entity; or
[0126] the non-terrestrial entity is not serving the UE when the first message is received.
[0127] 14. The method of any of the preceding clauses, wherein the non-terrestrial entity comprises a high-altitude platform station (HAPS) or a satellite.
[0128] 15. The method of any of the preceding clauses, wherein the first message comprises a radio resource control (RRC) message or a system information block (SIB) message.
[0129] 16. An apparatus for wireless communication for performance by a user equipment (UE), the apparatus comprising:
[0130] a processor,
[0131] a memory coupled with the processor; and
[0132] instructions stored in the memory and operable, when executed by the processor, to cause the apparatus to:
[0133] receive a first message, the first message comprising a configuration for reconfiguring a bandwidth part (BWP) for a network device;
[0134] the BWP;
[0135] reconfigure the BWP based on the configuration; and
[0136] switch from the current BWP to the reconfigured BWP to communicate with the network device.
[0137] 17. The apparatus of clause 16, wherein the processor causes the apparatus to:
[0138] receive an indication to transform the configuration, the configuration being a shared partial BWP configuration; and
[0139] receive at least one parameter that is independent of the shared partial BWP configuration.
[0140] 18. The apparatus of clause 16 or 17, wherein:
[0141] the indication to transform includes a frequency offset; and
[0142] the processor causes the apparatus to reconfigure the BWP by applying the frequency offset to a frequency of the shared partial BWP configuration.
[0143] 19. The apparatus of any of clauses 16-18, wherein the shared partial BWP configuration includes a shared common portion and a shared dedicated portion.
[0144] 20. The apparatus of any of clauses 16-19, wherein the configuration includes a shared partial BWP configuration, a reference BWP configuration, or an initial BWP configuration.
[0145] 21. The apparatus of any of clauses 16-20, wherein:
[0146] the configuration is a shared partial BWP configuration; and
[0147] the BWP is one of a plurality of BWPs.
[0148] 22. The apparatus of any of clauses 16-21, wherein the configuration is a shared partial BWP configuration, comprising:
[0149] a downlink (DL) BWP configuration including a DL frequency location and bandwidth for a shared partial DL BWP, a first subcarrier spacing, a first cyclic prefix duration, a control resource set (COREST) indication, and a search space indication; and
[0150] an uplink (UL) BWP configuration including a UL frequency location and bandwidth for a shared partial UL BWP, a second subcarrier spacing, a second cyclic prefix duration, a cell-specific UL control channel resource, and an uplink shared channel configuration.
[0151] 23. The apparatus of any of clauses 16-22, wherein:
[0152] the configuration is one shared partial BWP configuration of a plurality of shared BWP configurations;
[0153] each of the plurality of shared partial BWP configurations is associated with a unique identifier; and
[0154] the processor causes the apparatus to receive the unique identifier to identify the one shared partial BWP configuration.
[0155] 24. The apparatus of any of clauses 16-23, wherein the processor causes the apparatus to switch to the reconfigured BWP before expiration of the timer.
[0156] 25. The apparatus of any of clauses 16-24, wherein the timer comprises:
[0157] a first value when the current BWP and the reconfigured BWP have a same shared partial BWP configuration; or
[0158] a second value when the current BWP and the reconfigured BWP have different shared partial BWP configurations, the first value being equal to or less than the second value.
[0159] 26. The apparatus of any of clauses 16-25, wherein the value of the timer is further based on at least one of an information element of the shared partial BWP configuration of the reconfigured BWP, whether a switch from the current BWP to the reconfigured BWP is an intra-beam switch or an inter-beam switch, a UE capability, or a combination thereof.
[0160] 27. The apparatus of any of clauses 16-26, wherein the network device comprises a non-terrestrial entity, and the BWP is used on a first non-terrestrial beam of the non-terrestrial entity.
[0161] 28. The apparatus of any of clauses 16-27, wherein:
[0162] the non-terrestrial entity is currently serving the UE via the first non-terrestrial beam;
[0163] the non-terrestrial entity is currently serving the UE via a second non-terrestrial beam, and the first non-terrestrial beam is one of a plurality of non-terrestrial beams of the non-terrestrial entity; or
[0164] the non-terrestrial entity is not serving the UE when the first message is received.
[0165] 29. The apparatus of any of clauses 16-28, wherein the non-terrestrial entity comprises a high-altitude platform station (HAPS) or a satellite.
[0166] 30. The apparatus of any of clauses 16-29, wherein the first message comprises a radio resource control (RRC) message or a system information block (SIB) message.
[0167] The foregoing disclosure provides illustration and description, but is not intended to be exhaustive or to limit the aspects to the precise form disclosed. Modifications and variations can be possible in light of the above disclosure or from practicing the aspects.
[0168] As used, the term “component” is intended to be broadly construed as hardware, firmware, and / or a combination of hardware and software. As used, a processor is implemented in hardware, firmware, and / or a combination of hardware and software.
[0169] Some aspects are described in connection with thresholds. As used, satisfying a threshold can refer to being greater than the threshold, being greater than or equal to the threshold, being less than the threshold, being less than or equal to the threshold, being equal to the threshold, not being equal to the threshold, and / or other values depending on the context.
[0170] It will be apparent that systems and / or methods described can be implemented in different forms of hardware, firmware, and / or a combination of hardware and software. The actual specialized control hardware or software code used to implement these systems and / or methods is not limiting of the aspects. Thus, the operation and behavior of the systems and / or methods were described, without reference to specific software code — it being understood that software and hardware can be designed to implement the systems and / or methods based, at least in part, on the description herein.
[0171] No aspect is intended to be dedicated to or limited by the recitation of features in the claims and / or specification. The features can be combined and rearranged based on the disclosure herein without departing from the scope of the aspects. As such, the following claims are not intended to be limited to the metes and bounds of the disclosure unless otherwise explicitly recited therein. Although each dependent claim listed below can stand on its own as a separate aspect, the disclosed aspects are capable of combination in which each claim can stand alone as a separate aspect and each claim can be combined with the dependent claims of other aspects. The phrase “at least one of” followed by a list of two or more items, such as “at least one of a, b, or c,” means that individual items can be selected from the list to realize a combination of the items corresponding to one of the permutations, such as “a or b or c,” “a or b or c,” and so forth. Following the same logic, the phrase “at least one of a or b” means a or b or both. The phrase “one or more of” followed by a list of two or more items, such as “one or more of a, b, or c,” means that individual items can be selected from the list to realize a combination of the items corresponding to one of the permutations, such as “a or b or c,” “a or b or c,” and so forth. Following the same logic, the phrase “one or more of a or b” means a or b or both. The phrase “one or more of a, b, and c” means a, b, c, a-b, a-c, b-c, and a-b-c. The phrase “one or more of a, b, or c” means a, b, c, a-b, a-c, b-c, and a-b-c.
[0172] No element, act or instruction used herein should be construed as critical or essential unless explicitly described as such. Also, as used, the articles “a” and “an” are intended to include one or more items, and can be used interchangeably with “one or more.” Furthermore, as used, the terms “set” and “group” are intended to include one or more items (e.g., related items, unrelated items, a combination of related and unrelated items, and / or the like), and can be used interchangeably with “one or more.” Where only one item is intended, the phrase “only one” or similar language is used. Also, as used, the terms “has,” “have,” “having,” and / or the like are intended to be open-ended terms. Further, the phrase “based on” is intended to mean “based, at least in part, on” unless explicitly stated otherwise.
Claims
1. A method for wireless communication performed at a user equipment (UE), comprising: receiving a first message including a configuration, the configuration including a shared partial bandwidth part (BWP) configuration or a reference BWP configuration; in response to the configuration including the shared partial BWP configuration, transforming the configuration based on the shared partial BWP configuration and at least one parameter independent of the shared partial BWP configuration; reconfiguring a BWP based on the transformed configuration or based on a difference relative to a reference BWP associated with the reference BWP configuration; and switching from a current BWP to the reconfigured BWP.
2. The method of claim 1, further comprising: receiving an indication to transform the configuration; and receiving the at least one parameter independent of the shared partial BWP configuration.
3. The method of claim 1, wherein reconfiguring the BWP includes applying a frequency offset to frequencies of the shared partial BWP configuration.
4. The method of claim 1, wherein the shared partial BWP configuration includes a shared common portion and a shared dedicated portion.
5. The method of claim 1, wherein: the BWP is one of a plurality of BWPs.
6. The method of claim 1, wherein the shared partial BWP configuration includes: a downlink (DL) BWP configuration including at least one of a DL frequency location and a bandwidth for a shared partial DL BWP, a first subcarrier spacing, a first cyclic prefix duration, a control resource set (CORESET) indication, or a search space indication; and an uplink (UL) BWP configuration including at least one of a UL frequency location and a bandwidth for a shared partial UL BWP, a second subcarrier spacing, a second cyclic prefix duration, a cell-specific UL control channel resource, or an uplink shared channel configuration.
7. The method of claim 1, wherein: the configuration includes one of a plurality of shared partial BWP configurations; and each of the plurality of shared partial BWP configurations is associated with a unique identifier; and the method further comprises receiving the unique identifier to identify the one shared partial BWP configuration.
8. The method of claim 1, further comprising switching to the reconfigured BWP before expiration of a timer.
9. The method of claim 8, wherein the timer includes: a first value when the current BWP and the reconfigured BWP have a same shared partial BWP configuration; or a second value when the current BWP and the reconfigured BWP have different shared partial BWP configurations, the first value being equal to or less than the second value.
10. The method of claim 9, wherein the first value or the second value of the timer is further based on at least one of an information element of the shared partial BWP configuration of the reconfigured BWP, whether a switch from the current BWP to the reconfigured BWP is an intra-beam switch or an inter-beam switch, a UE capability, or a combination thereof. 11. The method of claim 1, wherein the BWP is for communicating with a non-terrestrial entity on a first non-terrestrial beam of the non-terrestrial entity.
12. The method of claim 11, wherein: the non-terrestrial entity is currently serving the UE via the first non-terrestrial beam; the non-terrestrial entity is currently serving the UE via a second non-terrestrial beam and the first non-terrestrial beam is one of a plurality of non-terrestrial beams of the non-terrestrial entity; or the non-terrestrial entity is not serving the UE when the first message is received.
13. The method of claim 11, wherein the non-terrestrial entity comprises a high-altitude platform station (HAPS) or a satellite.
14. The method of claim 1, wherein the first message comprises a radio resource control (RRC) message or a system information block (SIB) message.
15. A method for wireless communication performed at a user equipment (UE), comprising: receiving a message comprising a configuration, the configuration comprising a shared partial bandwidth part (BWP) configuration, the shared partial BWP configuration comprising: a downlink (DL) BWP configuration comprising at least one of a DL frequency location and bandwidth for a shared partial DL BWP, a first subcarrier spacing, a first cyclic prefix duration, a control resource set (CORESET) indication, or a search space indication; and an uplink (UL) BWP configuration comprising at least one of a UL frequency location and bandwidth for a shared partial UL BWP, a second subcarrier spacing, a second cyclic prefix duration, a cell-specific UL control channel resource, or an uplink shared channel configuration; transforming the configuration based on the shared partial BWP configuration and at least one parameter independent of the shared partial BWP configuration; reconfiguring a BWP based on the transformed configuration; and switching from a current BWP to the reconfigured BWP.
16. A method for wireless communication performed at a user equipment (UE), comprising: receiving a message comprising a configuration, the configuration comprising one of a plurality of shared partial bandwidth part (BWP) configurations, each of the plurality of shared partial BWP configurations being associated with a unique identifier; receiving a particular unique identifier; identifying one of the plurality of shared partial BWP configurations based on the particular unique identifier; transforming the configuration based on the identified shared partial BWP configuration and at least one parameter independent of the identified shared partial BWP configuration; reconfiguring a BWP based on the transformed configuration; and switching from a current BWP to the reconfigured BWP.
17. An apparatus for wireless communication, comprising: at least one processor, at least one memory coupled with the at least one processor; and instructions stored in the at least one memory and operable, when executed by the at least one processor, to cause the apparatus to: receive a first message comprising a configuration, the configuration comprising a shared partial bandwidth part (BWP) configuration or a reference BWP configuration; transforming the configuration based on the shared partial BWP configuration and at least one parameter independent of the shared partial BWP configuration, in response to the configuration including the shared partial BWP configuration; reconfiguring a BWP based on the transformed configuration or based on a difference relative to a reference BWP associated with the reference BWP configuration; and switching from a current BWP to the reconfigured BWP.
18. The apparatus of claim 17, wherein the at least one processor causes the apparatus to: receive an indication to transform the configuration; and receive the at least one parameter independent of the shared partial BWP configuration.
19. The apparatus of claim 17, wherein: the at least one processor causes the apparatus to reconfigure the BWP by applying a frequency offset to frequencies of the shared partial BWP configuration.
20. The apparatus of claim 17, wherein the shared partial BWP configuration includes a shared common part and a shared dedicated part.
21. The apparatus of claim 17, wherein: the BWP is one of a plurality of BWPs.
22. The apparatus of claim 17, wherein the shared partial BWP configuration includes: a downlink (DL) BWP configuration including at least one of a DL frequency location and a bandwidth for a shared partial DL BWP, a first subcarrier spacing, a first cyclic prefix duration, a control resource set (CORESET) indication, or a search space indication; and an uplink (UL) BWP configuration including at least one of a UL frequency location and a bandwidth for a shared partial UL BWP, a second subcarrier spacing, a second cyclic prefix duration, a cell-specific UL control channel resource, or an uplink shared channel configuration.
23. The apparatus of claim 17, wherein: the configuration includes one of a plurality of shared partial BWP configurations; each of the plurality of shared partial BWP configurations is associated with a unique identifier; and the at least one processor causes the apparatus to receive the unique identifier to identify the one shared partial BWP configuration.
24. The apparatus of claim 17, wherein the at least one processor causes the apparatus to switch to the reconfigured BWP before expiration of a timer.
25. The apparatus of claim 24, wherein the timer includes: a first value when the current BWP and the reconfigured BWP have a same shared partial BWP configuration; or a second value when the current BWP and the reconfigured BWP have different shared partial BWP configurations, the first value being equal to or less than the second value.
26. The apparatus of claim 25, wherein the first value or the second value of the timer is further based on at least one of information elements of the shared partial BWP configuration of the reconfigured BWP, whether a switch from the current BWP to the reconfigured BWP is an intra-beam switch or an inter-beam switch, a UE capability, or a combination thereof. 27. The apparatus of claim 17, wherein the at least one processor causes the apparatus to communicate with a non-terrestrial entity on a first non-terrestrial beam of the non-terrestrial entity using the BWP.
28. The apparatus of claim 27, wherein: the non-terrestrial entity is currently serving the apparatus via the first non-terrestrial beam; the non-terrestrial entity is currently serving the apparatus via a second non-terrestrial beam and the first non-terrestrial beam is one of a plurality of non-terrestrial beams of the non-terrestrial entity; or the non-terrestrial entity is not serving the apparatus when the first message is received.
29. The apparatus of claim 27, wherein the non-terrestrial entity comprises a high-altitude platform station (HAPS) or a satellite.
30. The apparatus of claim 17, wherein the first message comprises a radio resource control (RRC) message or a system information block (SIB) message.
31. An apparatus for wireless communication, comprising: at least one processor; at least one memory coupled with the at least one processor; and instructions stored in the at least one memory and operable, when executed by the at least one processor, to cause the apparatus to: receive a first message comprising a configuration, the configuration comprising a shared partial bandwidth part (BWP) configuration, the shared partial BWP configuration comprising: a downlink (DL) BWP configuration comprising at least one of a DL frequency location and a bandwidth for a shared partial DL BWP, a first subcarrier spacing, a first cyclic prefix duration, a control resource set (CORESET) indication, or a search space indication; and an uplink (UL) BWP configuration comprising at least one of a UL frequency location and a bandwidth for a shared partial UL BWP, a second subcarrier spacing, a second cyclic prefix duration, a cell-specific UL control channel resource, or an uplink shared channel configuration; transform the configuration based on the shared partial BWP configuration and at least one parameter independent of the shared partial BWP configuration; reconfigure a BWP based on the transformed configuration; and switch from a current BWP to the reconfigured BWP.
32. The apparatus of claim 31, wherein the at least one processor further causes the apparatus to receive the at least one parameter independent of the shared partial BWP configuration.
33. The apparatus of claim 31, wherein the at least one processor causes the apparatus to reconfigure the BWP by applying a frequency offset to frequencies of the shared partial BWP configuration.
34. The apparatus of claim 31, wherein the shared partial BWP configuration comprises a shared common portion and a shared dedicated portion.
35. The apparatus of claim 31, wherein the BWP is one of a plurality of BWPs.
36. The apparatus of claim 31, wherein: the configuration comprises one of a plurality of shared partial BWP configurations; each of the plurality of shared partial BWP configurations is associated with a unique identifier; and The at least one processor also causes the apparatus to receive the unique identifier.
37. The apparatus of claim 31, wherein the at least one processor causes the apparatus to switch to the reconstructed BWP before expiration of a timer.
38. The apparatus of claim 37, wherein the timer comprises: a first value when the current BWP and the reconstructed BWP have a same shared partial BWP configuration; or a second value when the current BWP and the reconstructed BWP have different shared partial BWP configurations, the first value being equal to or less than the second value.
39. The apparatus of claim 38, wherein the first value or the second value of the timer is further based on at least one of an information element of the shared partial BWP configuration of the reconstructed BWP, whether a switch from the current BWP to the reconstructed BWP is an intra-beam switch or an inter-beam switch, a UE capability, or a combination thereof.
40. The apparatus of claim 31, wherein the first message comprises a radio resource control (RRC) message or a system information block (SIB) message.
41. An apparatus for wireless communication, comprising: at least one processor; at least one memory coupled with the at least one processor; and instructions stored in the at least one memory and operable, when executed by the at least one processor, to cause the apparatus to: receive a message comprising a configuration, the configuration comprising one shared partial bandwidth part (BWP) configuration of a plurality of shared partial BWP configurations, each of the plurality of shared partial BWP configurations being associated with a unique identifier; receive a particular unique identifier; identify one shared partial BWP configuration of the plurality of shared partial BWP configurations based on the particular unique identifier; transform the configuration based on the identified shared partial BWP configuration and at least one parameter independent of the identified shared partial BWP configuration; reconstruct a BWP based on the transformed configuration; and switch from a current BWP to the reconstructed BWP.
42. The apparatus of claim 41, wherein the at least one processor further causes the apparatus to receive the at least one parameter independent of the identified shared partial BWP configuration.
43. The apparatus of claim 41, wherein the at least one processor causes the apparatus to reconstruct the BWP by applying a frequency offset to frequencies of the shared partial BWP configuration.
44. The apparatus of claim 41, wherein the identified shared partial BWP configuration comprises a shared common portion and a shared dedicated portion.
45. The apparatus of claim 41, wherein the BWP is one BWP of a plurality of BWPs.
46. The apparatus of claim 41, wherein the identified shared partial BWP configuration comprises: a downlink, DL, BWP configuration including at least one of a DL frequency location and bandwidth for a shared partial DL BWP, a first subcarrier spacing, a first cyclic prefix duration, a control resource set, CORSET, indication, or a search space indication; and an uplink, UL, BWP configuration including at least one of a UL frequency location and bandwidth for a shared partial UL BWP, a second subcarrier spacing, a second cyclic prefix duration, a cell-specific UL control channel resource, or an uplink shared channel configuration.
47. The apparatus of claim 41, wherein the at least one processor causes the apparatus to switch to the reconfigured BWP before expiration of a timer.
48. The apparatus of claim 47, wherein the timer comprises: a first value when the current BWP and the reconfigured BWP have a same shared partial BWP configuration; or a second value when the current BWP and the reconfigured BWP have different shared partial BWP configurations, the first value being equal to or less than the second value.
49. The apparatus of claim 48, wherein the first value or the second value of the timer is further based on at least one of an information element of the shared partial BWP configuration of the reconfigured BWP, whether a switch from the current BWP to the reconfigured BWP is an intra-beam switch or an inter-beam switch, a UE capability, or a combination thereof.
50. The apparatus of claim 41, wherein the message comprises a radio resource control, RRC, message or a system information block, SIB, message.
Citation Information
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Method for updating system information, and terminal device, and network device
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