Cell reselection during gateway and satellite handover

Abstract

A user equipment can be configured to perform cell reselection during gateway and / or satellite handover. In some aspects, the user equipment can select a current cell of a satellite device in a radio access network (RAN); and receive, from the satellite device, cell reselection information identifying a destination cell for selection in response to a link modification. Further, the user equipment can select, via a cell reselection procedure, the destination cell based on the cell reselection information.

Description

[0001] Cross-reference to related applications

[0002] This application claims priority to U.S. Application No. 63 / 086,413, filed October 1, 2020, entitled “CELL RESELECTION DURING GATEWAY AND SATELLITE SWITCH,” and U.S. Patent Application No. 17 / 475,150, filed September 14, 2021, entitled “CELL RESELECTION DURING GATEWAY AND SATELLITE SWITCH,” the entire publication of which is incorporated herein by reference. background Technical Field

[0003] This disclosure generally relates to wireless communications, and more particularly to cell reselection during gateway and / or satellite handover.

[0004] introduction

[0005] 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 employ multiple access technologies that enable communication with multiple users by sharing available system resources. 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, and Time Division Synchronous Code Division Multiple Access (TD-SCDMA) systems.

[0006] These multiple access technologies have been adopted in various telecommunications standards to provide a common protocol enabling different wireless devices to communicate at the city, country, region, and even global levels. An example telecommunications standard is 5G New Radio (NR). 5G NR is part of the continuous evolution of mobile broadband, promulgated by the 3rd Generation Partnership Project (3GPP) to meet new requirements related to latency, reliability, security, scalability (such as with the Internet of Things (IoT), and other requirements). 5G NR includes services associated with enhanced mobile broadband (eMBB), massive machine-type communications (mMTC), and ultra-reliable low latency communications (URLLC). Some aspects of 5G NR can be based on the 4G Long Term Evolution (LTE) standard. There is a need for further improvements to 5G NR technology.

[0007] Overview

[0008] The following provides a brief overview of one or more aspects to offer a basic understanding of such aspects. This overview is not an exhaustive summary of all conceived aspects, nor is it intended to identify the key or decisive elements of all aspects, nor to define the scope of any or all aspects. Its sole purpose is to present some concepts of one or more aspects in a simplified form as an introduction to the more detailed description that follows.

[0009] An example implementation includes a wireless communication method at a user equipment (UE), comprising: selecting a current cell of a satellite device in a radio access network (RAN); and receiving from the satellite device cell reselection information for identifying a destination cell available for selection in response to a link modification.

[0010] This disclosure also provides an apparatus (e.g., UE) including a memory storing computer-executable instructions and at least one processor configured to execute the computer-executable instructions to perform the above methods, an apparatus including means for performing the above methods, and a non-transient computer-readable medium storing computer-executable instructions for at least performing the above methods.

[0011] An example implementation includes a wireless communication method at a satellite device, comprising: initializing the current cell of a RAN using one or more beams; determining cell reselection information for identifying a destination cell for a UE to select in response to a link modification; and sending the cell reselection information to the UE.

[0012] This disclosure also provides an apparatus (e.g., a satellite device) including a memory storing computer-executable instructions and at least one processor configured to execute the computer-executable instructions to perform the above methods, an apparatus including means for performing the above methods, and a non-transient computer-readable medium storing computer-executable instructions for at least performing the above methods.

[0013] To achieve the foregoing and related objectives, these one or more aspects include the features fully described below and specifically pointed out in the claims. The following description and drawings illustrate some of the illustrative features of these one or more aspects. However, these features merely indicate a few of the various ways in which the principles of these various aspects may be employed, and this description is intended to cover all such aspects and their equivalents. Brief description of the attached diagram

[0015] Figure 1 These are illustrations illustrating examples of wireless communication systems and access networks according to some aspects of this disclosure.

[0016] Figure 2A This is an illustration of an example of a first 5G / NR frame that explains some aspects of this disclosure.

[0017] Figure 2B This is a diagram illustrating an example of a DL channel within a 5G / NR subframe according to some aspects of this disclosure.

[0018] Figure 2C This is an illustration of an example of a second 5G / NR frame that explains some aspects of this disclosure.

[0019] Figure 2D This is a diagram illustrating an example of a UL channel within a 5G / NR subframe according to some aspects of this disclosure.

[0020] Figure 3 This is a diagram illustrating examples of base stations and user equipment (UEs) in an access network according to some aspects of this disclosure.

[0021] Figure 4 This is a diagram illustrating example communications and components of satellite equipment and UE according to some aspects of this disclosure.

[0022] Figure 5A This is a diagram illustrating an example of a wireless communication network 500 comprising a fixed radio cellular cell, in a first instance of some aspects of this disclosure.

[0023] Figure 5B This is a diagram illustrating an example of a wireless communication network 500 comprising a fixed radio cellular cell, in a second instance according to some aspects of this disclosure.

[0024] Figure 6A This is a diagram illustrating a first example of a wireless communication network 600 comprising a mobile radio cell, based on some aspects of this disclosure in a time-first instance.

[0025] Figure 6B This is a diagram illustrating a first example of a wireless communication network 600 comprising a mobile radio cell, in a second instance of time according to some aspects of this disclosure.

[0026] Figure 7A This is a diagram illustrating a second example of a wireless communication network 700 comprising a mobile radio cell, in accordance with some aspects of this disclosure, in a first instance of time.

[0027] Figure 7B This is a diagram illustrating a second example of a wireless communication network 700 including a mobile radio cell, based on some aspects of this disclosure in a second instance of time.

[0028] Figure 8 This is a diagram illustrating an example of a hardware implementation of a UE using a processing system according to some aspects of this disclosure.

[0029] Figure 9 This is a diagram illustrating an example of the hardware implementation of a satellite device employing a processing system according to some aspects of this disclosure.

[0030] Figure 10 This is a flowchart of an example method for a UE to perform cell reselection during gateway and / or satellite handover, according to some aspects of this disclosure.

[0031] Figure 11 This is a flowchart of a method for a base station to facilitate cell reselection during gateway and / or satellite handover, according to some aspects of this disclosure.

[0032] Detailed description

[0033] The detailed description that follows, taken in conjunction with the accompanying drawings, is intended as a description of various configurations and is not intended to represent only the configurations in which the concepts described herein can be practiced. This detailed description includes specific details to provide a thorough understanding of the various concepts. However, it will be apparent to those skilled in the art that these concepts can be practiced without these specific details. In some instances, structures and components are shown in block diagram form to avoid obscuring such concepts.

[0034] Several aspects of a telecommunications system will now be described with reference to various apparatuses and methods. These apparatuses and methods will be described in detail below and explained in the accompanying drawings by various blocks, components, circuits, processes, algorithms, etc. (collectively, “elements”). These elements can be implemented using electronic hardware, computer software, or any combination thereof. Whether such elements are implemented as hardware or software depends on the specific application and the design constraints imposed on the overall system.

[0035] As an example, an element, or any part of an element, or any combination of elements, may be implemented as a "processing system" including one or more processors. Examples of processors include: microprocessors, microcontrollers, graphics processing units (GPUs), central processing units (CPUs), application processors, digital signal processors (DSPs), reduced instruction set computing (RISC) processors, system-on-a-chip (SoCs), baseband processors, field-programmable gate arrays (FPGAs), programmable logic devices (PLDs), state machines, gated logic, discrete hardware circuits, and other suitable hardware configured to perform the various functionalities described throughout this disclosure. One or more processors in a processing system can execute software. Software should be broadly interpreted as instructions, instruction sets, code, code segments, program code, programs, subroutines, software components, applications, software applications, software packages, routines, subroutines, objects, executables, threads of execution, procedures, functions, etc., whether referred to as software, firmware, middleware, microcode, hardware description languages, or other terms.

[0036] Accordingly, in one or more examples, the described functionality can be implemented in hardware, software, or any combination thereof. If implemented in software, the functionality can be stored or encoded as one or more instructions or code on a computer-readable medium. Computer-readable media includes computer storage media. Storage media can be any available medium accessible to a computer. By way of example and not limitation, such computer-readable media can include random access memory (RAM), read-only memory (ROM), electrically erasable programmable ROM (EEPROM), optical disc storage, magnetic disk storage, other magnetic storage devices, combinations of computer-readable media of the types described above, or any other medium capable of storing computer-executable code in the form of instructions or data structures accessible to a computer.

[0037] Various implementations generally involve procedures for cell reselection during gateway and / or satellite handover. In some aspects, an idle UE can be configured to identify a cell to camp on and perform a cell reselection procedure to camp on that cell. In some aspects, one of the purposes of cell reselection is to ensure that the UE camps on / connects to the best cell in terms of radio condition. Furthermore, as described herein, the UE can further identify the cell to camp on based on cell reselection information received from satellite equipment. As used herein, cell reselection information can inform the UE which cells may require another cell reselection procedure in the near future, and the UE can be configured to minimize or reduce the execution of cell reselection based on this cell reselection information.

[0038] Figure 1 This is a diagram illustrating an example of a wireless communication system and access network 100. The wireless communication system (also known as a wireless wide area network (WWAN)) includes base station 102, UE 104, evolved packet core (EPC) 160, and another core network 190 (e.g., a 5G core (5GC)). Base station 102 may include macrocells (high-power cellular base stations) or small cells (low-power cellular base stations). Macrocells include base stations. Small cells include femtocells, picocells, and microcells.

[0039] As described in detail herein, in some aspects, base station 102 may be a satellite device. As used herein, in some aspects, "satellite device" may refer to a communication device orbiting a planet (e.g., Earth). The satellite device may be communicatively coupled to access network 100 via one or more gateway devices. Furthermore, the satellite device may transmit and receive beams to provide cellular coverage to UE 104. Thus, the satellite device may include a space navigation platform and communication payloads (e.g., antennas, transponders, etc.) for satellite operation. Additionally, the satellite device may be a low Earth orbit (LEO) satellite device, a medium Earth orbit (MEO) satellite device, and / or a geostationary (GEO) satellite device. In one aspect, one or more UEs 104 may include a satellite cell selection component 140 configured to perform a cell reselection process based on cell reselection information, and the satellite device may be configured to determine the cell reselection information.

[0040] Base station 102 configured for 4G LTE (collectively referred to as Evolved Universal Mobile Telecommunications System (UMTS) Terrestrial Radio Access Network (E-UTRAN)) can interface with EPC 160 via a first backhaul link 132 (e.g., S1 interface). Base station 102 configured for 5G NR (collectively referred to as Next Generation RAN (NG-RAN)) can interface with core network 190 via a second backhaul link 184. Among other functions, base station 102 can also perform one or more of the following functions: user data delivery, radio channel cryptography and cryptography decoding, integrity protection, header compression, mobility control functions (e.g., handover, dual connectivity), inter-cell interference coordination, connection establishment and release, load balancing, distribution of Non-Access Stratum (NAS) messages, NAS node selection, synchronization, Radio Access Network (RAN) sharing, Multimedia Broadcast Multicast Service (MBMS), subscriber and equipment tracking, RAN Information Management (RIM), paging, location, and delivery of alarm messages. Base stations 102 can communicate with each other directly or indirectly (e.g., via EPC 160 or core network 190) on a third backhaul link 134 (e.g., an X2 interface). The third backhaul link 134 can be wired or wireless.

[0041] Base station 102 can wirelessly communicate with UE 104. Each base station 102 can provide communication coverage for its respective geographical coverage area 110. Overlapping geographical coverage areas 110 may exist. For example, small cell 102a may have a coverage area 110a that overlaps with the coverage areas 110 of one or more macro base stations 102. A network that includes both small cells and macro cells may be referred to as a heterogeneous network. The heterogeneous network may also include a Home Evolved B Node (eNB) (HeNB) that can provide services to a restricted group called a Closed Subscriber Group (CSG). The communication link 120 between base station 102 and UE 104 may include an uplink (UL) (also known as a reverse link) transmission from UE 104 to base station 102 or a downlink (DL) (also known as a forward link) transmission from base station 102 to UE 104. The communication link 120 may use multiple-input multiple-output (MIMO) antenna technologies, including spatial multiplexing, beamforming, or transmit diversity. These communication links may use one or more carriers. For each carrier allocated in a carrier aggregation totaling up to Yx MHz (x component carriers) for transmission in each direction, base station 102 / UE 104 may use a spectrum with a bandwidth of up to Y MHz (e.g., 5, 10, 15, 20, 100, 400 MHz, etc.). These carriers may or may not be adjacent to each other. Carrier allocation may be asymmetric with respect to DL and UL (e.g., more or fewer carriers may be allocated to DL compared to UL). Component carriers may include primary component carriers and one or more secondary component carriers. The primary component carrier may be referred to as the primary cell (PCell), and the secondary component carriers may be referred to as secondary cells (SCells).

[0042] Some UEs 104 may communicate with each other using device-to-device (D2D) communication link 158. D2D communication link 158 may use DL / UL WWAN spectrum. D2D communication link 158 may use one or more sidelink channels, such as the Physical Sidelink Broadcast Channel (PSBCH), Physical Sidelink Discovery Channel (PSDCH), Physical Sidelink Shared Channel (PSSCH), and Physical Sidelink Control Channel (PSCCH). D2D communication can be achieved through a wide variety of wireless D2D communication systems, such as, for example, FlashLinQ, WiMedia, Bluetooth, ZigBee, Wi-Fi based on the IEEE 802.11 standard, LTE, or NR.

[0043] The wireless communication system may further include a Wi-Fi access point (AP) 150 communicating with a Wi-Fi station (STA) 152 via a communication link 154 in the 5 GHz unlicensed spectrum. When communicating in the unlicensed spectrum, the STA 152 / AP 150 may perform a clear channel assessment (CCA) before communication to determine whether the channel is available.

[0044] Small Cell 102a can operate in licensed or unlicensed spectrum. When operating in unlicensed spectrum, Small Cell 102a can employ NR and use the same 5 GHz unlicensed spectrum as that used by Wi-Fi AP 150. Small Cell 102a employing NR in unlicensed spectrum can enhance access network coverage or increase access network capacity.

[0045] Whether it's a small cell 102a or a large cell (e.g., a macro base station), base station 102 may include and / or be referred to as an eNB, gNodeB (gNB), or another type of base station. Some base stations (such as gNB180) can operate one or more frequency bands within the electromagnetic spectrum. The electromagnetic spectrum is typically subdivided into various classes, bands, channels, etc., based on frequency / wavelength. In 5G NR, two initial operating frequency bands have been identified as frequency ranges designated FR1 (416MHz–7.125GHz) and FR2 (24.25GHz–52.6GHz). The frequencies between FR1 and FR2 are generally referred to as mid-band frequencies. Although a portion of FR1 is greater than 6GHz, in various documents and articles, FR1 is often (interchangeably) referred to as the "sub-6GHz band". Similar naming issues sometimes arise with FR2. Although it is different from the Very High Frequency (EHF) band (30 GHz–300 GHz) which is identified by the International Telecommunication Union (ITU) as the “millimeter wave” (mmW) band, FR2 is generally (interchangeably) referred to as the “millimeter wave” band in various documents and articles.

[0046] Considering the above aspects, unless otherwise stated, it should be understood that, as used herein, the term "sub-6GHz" and the like can broadly refer to frequencies less than 6GHz, within FR1, or including intermediate frequency band frequencies. Furthermore, unless otherwise stated, it should be understood that, as used herein, the term "millimeter wave" and the like can broadly refer to frequencies including intermediate frequency band frequencies, within FR2, or within the EHF band. However, communication using the mmW radio frequency band has extremely high path loss and short range. The mmW base station 180 can utilize beamforming 182 with the UE 104 to compensate for the high path loss and short range. The base station 180 and the UE 104 can each include multiple antennas, such as antenna elements, antenna panels, or antenna arrays, to facilitate beamforming.

[0047] Base station 180 may transmit beamformed signals to UE 104 in one or more transmission directions 182a. UE 104 may receive beamformed signals from base station 180 in one or more reception directions 182b. UE 104 may also transmit beamformed signals to base station 180 in one or more transmission directions. Base station 180 may receive beamformed signals from UE 104 in one or more reception directions. Base station 180 / UE 104 may perform beam training to determine the optimal reception and transmission directions for each of base station 180 / UE 104. The transmission and reception directions of base station 180 may be the same or different. The transmission and reception directions of UE 104 may be the same or different.

[0048] EPC 160 may include Mobility Management Entity (MME) 162, other MMEs 164, Serving Gateway 166, Multimedia Broadcast Multicast Service (MBMS) Gateway 168, Broadcast Multicast Service Center (BM-SC) 170, and Packet Data Network (PDN) Gateway 172. MME 162 may communicate with Home Subscriber Server (HSS) 174. MME 162 is the control node that handles signaling between UE 104 and EPC 160. Generally, MME 162 provides bearer and connection management. All user Internet Protocol (IP) packets are delivered through Serving Gateway 166, which is itself connected to PDN Gateway 172. PDN Gateway 172 provides UE IP address allocation and other functions. PDN Gateway 172 and BM-SC 170 are connected to IP Service 176. IP Service 176 may include the Internet, intranet, IP Multimedia Subsystem (IMS), PS streaming service, or other IP services. The BM-SC170 provides functionality for MBMS user service provisioning and delivery. The BM-SC 170 can serve as an entry point for content provider MBMS transmissions, authorize and initiate MBMS bearer services within a Public Land Mobile Network (PLMN), and schedule MBMS transmissions. The MBMS gateway 168 can be used to distribute MBMS traffic to base station 102 within a Broadcast-Specific Service Single Frequency Network (MBSFN) area, and can be responsible for session management (start / stop) and collecting eMBMS-related billing information.

[0049] The core network 190 may include Access and Mobility Management Functions (AMF) 192, other AMFs 193, Session Management Functions (SMF) 194, and User Plane Functions (UPF) 195. AMF 192 may communicate with Unified Data Management (UDM) 196. AMF 192 is the control node that handles signaling between UE 104 and the core network 190. Generally, AMF 192 provides QoS flow and session management. All user Internet Protocol (IP) packets are transmitted through UPF 195. UPF 195 provides UE IP address allocation and other functions. UPF 195 connects to IP services 197. IP services 197 may include the Internet, intranet, IP Multimedia Subsystem (IMS), PS streaming service, or other IP services.

[0050] Base stations may include or be referred to as gNB, B-node, eNB, access point, base transceiver station, radio base station, radio transceiver, transceiver function, basic service set (BSS), extended service set (ESS), transmit / receive point (TRP), or any other suitable term. Base station 102 provides UE 104 with access to EPC 160 or core network 190. Examples of UE 104 include satellite phones, cellular phones, smartphones, Session Initiation Protocol (SIP) phones, laptop devices, personal digital assistants (PDAs), satellite radios, GPS devices, multimedia devices, video devices, digital audio players (e.g., MP3 players), cameras, game consoles, tablet devices, smart devices, wearable devices, vehicles, electricity meters, gas pumps, large or small kitchen appliances, healthcare devices, implants, sensors / actuators, displays, or any other similar functional devices. Some UE 104 may be referred to as IoT devices (e.g., parking timers, oil pumps, ovens, vehicles, heart monitors, etc.). UE 104 may also be referred to as a station, mobile station, subscriber station, mobile unit, subscriber unit, radio unit, remote unit, mobile device, radio device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, radio terminal, remote terminal, handheld device, user agent, mobile client, client, or some other suitable term.

[0051] While the following description may focus on 5G NR, the concepts described herein are applicable to other similar areas such as LTE, LTE-A, CDMA, GSM, and other wireless technologies.

[0052] Figures 2A-2D Example figures 200, 230, 250, and 280 illustrate example structures that can be used for wireless communication (e.g., for 5G NR communication) between base station 102 and UE 104. Figure 2AThis is a diagram 200 illustrating an example of the first subframe within the 5G / NR frame structure. Figure 2B Figure 230 is an example illustrating the DL channel within a 5G / NR subframe. Figure 2C Figure 250 is an example illustrating the second subframe within the 5G / NR frame structure. Figure 2D Figure 280 illustrates an example of the UL channel within a 5G / NR subframe. The 5G / NR frame structure can be FDD, where, for a given set of subcarriers (carrier system bandwidth), subframes within that set are dedicated to either DL or UL; or it can be TDD, where, for a given set of subcarriers (carrier system bandwidth), subframes within that set are dedicated to both DL and UL. Figure 2A , 2C In the provided examples, the 5G / NR frame structure is assumed to be TDD, where subframe 4 is configured with slot format 28 (mostly DL) and subframe 3 is configured with slot format 34 (mostly UL), where D is DL, U is UL, and X is for flexible use between DL and UL. Although subframes 3 and 4 are shown as having slot formats 34 and 28, respectively, any particular subframe can be configured with any of the various available slot formats 0-61. Slot formats 0 and 1 are full DL and full UL, respectively. Other slot formats 2-61 include a mixture of DL, UL, and flexible symbols. The UE is configured to have a slot format via the received Slot Format Indicator (SFI) (dynamically configured via DL Control Information (DCI) or semi-statically / statically configured via Radio Resource Control (RRC) signaling). Note that the description presented herein also applies to 5G / NR frame structures for TDD.

[0053] Other wireless communication technologies may have different frame structures or different channels. A frame (10ms) can be divided into 10 equally sized subframes (1ms). Each subframe may include one or more time slots. Subframes may also include mini-time slots, which may include 7, 4, or 2 symbols. Each time slot may include 7 or 14 symbols, depending on the time slot configuration. For time slot configuration 0, each time slot may include 14 symbols, while for time slot configuration 1, each time slot may include 7 symbols. Symbols on the DL can be Cyclic Prefix (CP) OFDM (CP-OFDM) symbols. Symbols on the UL can be CP-OFDM symbols (for high-throughput scenarios) or Discrete Fourier Transform (DFT) Extended OFDM (DFT-s-OFDM) symbols (also known as Single Carrier Frequency Division Multiple Access (SC-FDMA) symbols) (for power-constrained scenarios; limited to single-stream transmission). The number of time slots within a subframe is based on the time slot configuration and parameter design. For slot configuration 0, different parameter designs μ from 0 to 5 allow 1, 2, 4, 8, 16, and 32 slots per subframe, respectively. For slot configuration 1, different parameter designs 0 to 2 allow 2, 4, and 8 slots per subframe, respectively. For slot configuration 0 and parameter design μ, there are 14 symbols per slot and 2 symbols per subframe. μ Each time slot. The subcarrier spacing and symbol length / duration vary depending on the design parameters. The subcarrier spacing can be equal to 2. μ *15kHz, where μ is the parameter set from 0 to 5. Thus, a parameter design μ=0 has a subcarrier spacing of 15kHz, while a parameter design μ=5 has a subcarrier spacing of 480kHz. Symbol length / duration is inversely correlated with subcarrier spacing. Figures 2A-2D An example is provided with a slot configuration of 0 with 14 symbols per slot and a parameter design of μ=0 with 1 slot per subframe. The subcarrier spacing is 15kHz and the symbol duration is approximately 66.7μs.

[0054] A resource grid can be used to represent the frame structure. Each time slot includes a resource block (RB) extending 12 consecutive subcarriers (also known as a physical RB (PRB)). The resource grid is divided into multiple resource elements (REs). The number of bits carried by each RE depends on the modulation scheme.

[0055] like Figure 2A As explained in the text, some REs carry reference (pilot) signals (RS) for the UE. RS may include demodulated RS (DM-RS) for channel estimation at the UE (indicated as R for a particular configuration). x (where 100x is the port number, but other DM-RS configurations are possible) and Channel State Information Reference Signal (CSI-RS). RS may also include Beam Measurement RS (BRS), Beam Refinement RS (BRRS), and Phase Tracking RS (PT-RS).

[0056] Figure 2B Examples of various DL channels within a subframe of a frame are explained. The Physical Downlink Control Channel (PDCCH) carries the DCI within one or more CCEs, each CCE comprising 9 RE groups (REGs), each REG comprising 4 consecutive REs in OFDM symbols. The Primary Synchronization Signal (PSS) is located within symbol 2 of a specific subframe of the frame. The PSS is used by the UE 104 to determine subframe / symbol timing and physical layer identity. The Secondary Synchronization Signal (SSS) is located within symbol 4 of a specific subframe of the frame. The SSS is used by the UE to determine the physical layer cell identity group number and radio frame timing. Based on the physical layer identity and physical layer cell identity group number, the UE can determine the Physical Cell Identifier (PCI). Based on the PCI, the UE can determine the location of the aforementioned DM-RS. The Physical Broadcast Channel (PBCH) carrying the Primary Information Block (MIB) can logically be grouped with the PSS and SSS to form a Synchronization Signal (SS) / PBCH block (SSB). The MIB provides the number of RBs in the system bandwidth and the System Frame Number (SFN). The Physical Downlink Shared Channel (PDSCH) carries user data, broadcast system information (such as System Information Blocks (SIBs)) that are not transmitted through the PBCH, and paging messages.

[0057] As in Figure 2C As explained, some REs carry DM-RS for channel estimation at the base station (indicated as R for a specific configuration, but other DM-RS configurations are possible). The UE can transmit DM-RS for the Physical Uplink Control Channel (PUCCH) and DM-RS for the Physical Uplink Shared Channel (PUSCH). The PUSCH DM-RS can be transmitted in the first or first two symbols of the PUSCH. The PUCCH DM-RS can be transmitted in different configurations depending on whether a short or long PUCCH is transmitted and on the specific PUCCH format used. Although not shown, the UE can transmit a Probe Reference Signal (SRS). The SRS can be used by the base station for channel quality estimation to enable frequency-dependent scheduling on the UL.

[0058] Figure 2D Examples of various UL channels within a subframe of a frame are explained. The PUCCH can be located as indicated in one configuration. The PUCCH carries uplink control information (UCI), such as scheduling requests, channel quality indicators (CQI), precoding matrix indicators (PMI), rank indicators (RI), and HARQACK / NACK feedback. The PUSCH carries data and can additionally be used to carry buffer status reports (BSR), power clearance reports (PHR), or UCI.

[0059] Figure 3This is a block diagram showing the communication between base station 102 / 180 (e.g., satellite equipment) and UE 104 in the access network. In the DL, IP packets from EPC 160 can be provided to controller / processor 375. Controller / processor 375 implements Layer 3 and Layer 2 functionality. Layer 3 includes the Radio Resource Control (RRC) layer, and Layer 2 includes the Serving Data Adaptation Protocol (SDAP) layer, Packet Data Convergence Protocol (PDCP) layer, Radio Link Control (RLC) layer, and Media Access Control (MAC) layer. The controller / processor 375 provides RRC layer functionality associated with broadcasting system information (such as MIB, SIB), RRC connection control (such as RRC connection paging, RRC connection establishment, RRC connection modification, and RRC connection release), inter-Radio Access Technology (RAT) mobility, and measurement configuration of UE measurement reports; PDCP layer functionality associated with header compression / decompression, security (cryptography, cryptographic decoding, integrity protection, integrity verification), and handover support functions; RLC layer functionality associated with upper-layer packet data unit (PDU) delivery, error correction via ARQ, concatenation, segmentation and reassembly of RLC service data units (SDUs), resegmentation of RLC data PDUs, and reordering of RLC data PDUs; and MAC layer functionality associated with mapping between logical channels and transport channels, multiplexing MAC SDUs onto transport blocks (TBs), demultiplexing MAC SDUs from TBs, scheduling information reporting, error correction via HARQ, priority handling, and logical channel priority differentiation.

[0060] Transmit (TX) processor 316 and receive (RX) processor 370 implement Layer 1 functionality associated with various signal processing functions. Layer 1, including the physical (PHY) layer, may include error detection on the transport channel, forward error correction (FEC) decoding / decoding of the transport channel, interleaving, rate matching, mapping to the physical channel, modulation / demodulation of the physical channel, and MIMO antenna processing. TX processor 316 processes the mapping to the signal constellation based on various modulation schemes such as binary phase shift keying (BPSK), quadrature phase shift keying (QPSK), M-phase shift keying (M-PSK), and M-quadrature amplitude modulation (M-QAM). The decoded and modulated symbols can then be split into parallel streams. Each stream can then be mapped to an OFDM subcarrier, multiplexed with a reference signal (such as a pilot) in the time or frequency domain, and then combined using inverse fast Fourier transform (IFFT) to generate a physical channel carrying a time-domain OFDM symbol stream. The OFDM streams are spatially precoded to generate multiple spatial streams. The channel estimate from channel estimator 374 can be used to determine coding and modulation schemes and for spatial processing. This channel estimate can be derived from a reference signal or channel condition feedback transmitted by UE 104. Each spatial stream can then be provided to a different antenna 320 via a separate transmitter 318TX. Each transmitter 318TX can use the corresponding spatial stream to modulate an RF carrier for transmission.

[0061] In UE 104, each receiver 354RX receives signals via its corresponding antenna 352. Each receiver 354RX recovers the information modulated onto the RF carrier and provides this information to the receive (RX) processor 356. The TX processor 368 and RX processor 356 implement Layer 1 functionality associated with various signal processing functions. The RX processor 356 can perform spatial processing on the information to recover any spatial stream destined for UE 104. If there are multiple spatial streams destined for UE 104, they can be combined by the RX processor 356 into a single OFDM symbol stream. The RX processor 356 then uses a Fast Fourier Transform (FFT) to transform the OFDM symbol stream from the time domain to the frequency domain. The frequency domain signal consists of a separate OFDM symbol stream for each subcarrier of the OFDM signal. The symbols on each subcarrier, along with the reference signal, are recovered and demodulated by determining the signal constellation points most likely to be transmitted by base stations 102 / 180. These soft decisions can be based on a channel estimate calculated by the channel estimator 358. These soft decisions are then decoded and deinterleaved to recover the original data and control signals transmitted by base stations 102 / 180 on the physical channel. These data and control signals are then provided to the controller / processor 359, which implements layer 3 and layer 2 functionality.

[0062] The controller / processor 359 may be associated with a memory 360 that stores program code and data. The memory 360 may be referred to as a computer-readable medium. In the UL, the controller / processor 359 provides demultiplexing between transport and logical channels, packet reassembly, cipher decoding, header decompression, and control signal processing to recover IP packets from the EPC 160. The controller / processor 359 is also responsible for error detection using ACK or NACK protocols to support HARQ operation.

[0063] Similar to the functionality described in conjunction with DL transmissions performed by base stations 102 / 180, controller / processor 359 provides RRC layer functionality associated with system information (e.g., MIB, SIB) capture, RRC connectivity, and measurement reporting; PDCP layer functionality associated with header compression / decompression and security (cryptography, cryptographic decoding, integrity protection, integrity verification); RLC layer functionality associated with upper-layer PDU delivery, error correction via ARQ, concatenation, segmentation, and reassembly of RLC SDUs, resegmentation of RLC data PDUs, and reordering of RLC data PDUs; and MAC layer functionality associated with mapping between logical channels and transport channels, multiplexing MAC SDUs onto TBs, demultiplexing MAC SDUs from TBs, scheduling information reporting, error correction via HARQ, priority handling, and logical channel priority differentiation.

[0064] The channel estimate derived by the channel estimator 358 from the reference signal or feedback transmitted by the base station 102 / 180 can be used by the TX processor 368 to select an appropriate coding and modulation scheme and to facilitate spatial processing. The spatial stream generated by the TX processor 368 can be provided to different antennas 352 via separate transmitters 354TX. Each transmitter 354TX can use the corresponding spatial stream to modulate an RF carrier for transmission.

[0065] UL transmissions are processed at base stations 102 / 180 in a manner similar to that described in conjunction with the receiver function at UE 104. Each receiver 318RX receives signals via its respective antenna 320. Each receiver 318RX recovers the information modulated onto the RF carrier and provides that information to the RX processor 370.

[0066] The controller / processor 375 may be associated with a memory 376 that stores program code and data. The memory 376 may be referred to as a computer-readable medium. In the UL, the controller / processor 375 provides demultiplexing between transport and logical channels, packet reassembly, cipher decoding, header decompression, and control signal processing to recover IP packets from the UE 104. IP packets from the controller / processor 375 may be provided to the EPC 160. The controller / processor 375 is also responsible for error detection using ACK or NACK protocols to support HARQ operation.

[0067] In UE 104, at least one of the TX processor 368, RX processor 356, and controller / processor 359 can be configured to perform operations related to... Figure 1 The satellite cellular selection component 140 combines various aspects.

[0068] In base station 102 / 180, at least one of TX processor 316, RX processor 370, and controller / processor 375 can be configured to perform operations related to... Figure 1 The satellite cellular management component 198 integrates various aspects.

[0069] In some instances, satellite access systems can be incorporated into communication networks. For example, a communication network may employ satellite equipment to provide communication access to unserved or underserved geographic areas, or to offload traffic from a terrestrial network. Thus, the communication system may include a feeder link between the satellite equipment and a gateway that communicatively couples the satellite to the communication network, and one or more service links between the satellite equipment and a UE receiving communication access via the satellite equipment. Furthermore, operation of the satellite equipment can lead to satellite handover (i.e., service link modification) and / or gateway change (i.e., feeder link modification). In response to the operation of the satellite equipment, the UE may perform cell reselection to select a cell of the satellite equipment or another more suitable satellite equipment to camp on. However, frequent cell reselection can waste battery capacity, thereby adversely affecting the operation of the UE. This disclosure provides techniques for performing cell reselection during gateway and / or satellite handover. As described in detail herein, the UE can be configured to minimize or reduce the frequency of cell reselection based on cell reselection information received from the satellite equipment.

[0070] In some aspects, cell selection information can be used to determine the beams and / or radio cells of satellite equipment that the UE should select, in order to minimize or reduce the amount of cell reselection performed by the UE. In other words, the selection of beams and / or radio cells should delay the execution of cell reselection by reducing the priority of occupying the beams and radio cells most likely to require cell reselection in the near future. Furthermore, in some aspects, satellite equipment can transmit cell reselection information within SIB, MIB, SSB, and / or dedicated RRC signaling. Therefore, this technology enables the UE to perform intelligent cell reselection within the satellite access network, thereby reducing UE battery consumption and processing load.

[0071] refer to Figure 4-11 In a non-limiting aspect, system 400 is configured to minimize cell reselection caused by gateway and / or satellite handover in a communication system including satellite equipment.

[0072] Figure 4 These are illustrations illustrating example communications and components of satellite equipment and the UE. For example... Figure 4 As explained herein, system 400 may include multiple satellite devices 402(1)-(N), multiple gateways 404(1)-(N), and multiple UEs 406(1)-(N) (e.g., UE 102). Each satellite device 402 may establish one or more feeder links 408 with gateway 404. As described herein, in some aspects, "feeder link" may refer to a bidirectional communication link between satellite device 402 and gateway 404. For example, satellite device 402(1) may establish a first feeder link 408(1) with gateway 404(1) and a second feeder link 408(2) with gateway 404(2). As another example, satellite device 402(2) may establish a third feeder link 408(3) with gateway 404(2). Furthermore, gateways 404(1)-(N) may be communicatively coupled to other parts of the communication network (e.g., terrestrial network parts) with satellite devices 402(1)-(N). For example, satellite equipment 402(1)-(N) can receive network communication 409(1)-(N) from the ground network via feeder link 408(1)-(N) and transmit network communication 409(1)-(N) to the ground network via feeder link 408(1)-(N).

[0073] Furthermore, satellite devices 402(1)-(N) can form beams 410(1)-(N) based on feeder links 408(1)-(N). For example, feeder link 408(1) can correspond to beams 410(1)-(3) formed by satellite devices 402(1), feeder link 408(2) can correspond to beams 410(4) formed by satellite devices 402(1), and feeder link 408(2) can correspond to beams 410(5)-(6) formed by satellite devices 402(2). In some aspects, the occupied area of ​​beams 410 forms or extends cellular cells 412. For example, beams 410(1)-(3) form cellular cells 412(1), beams 410(4) form cellular cells 412(2), and beams 410(5)-(6) form cellular cells 412(3). Furthermore, when UE 406 connects to or selects cell 412 via beam 410, satellite equipment 402 and UE 406 can establish a serving link. As used herein, in some aspects, "cell selection" can refer to a process that allows the UE to select a suitable cell to camp on in order to access available services. In other aspects, a "cell reselection" process allows the UE to select a more suitable cell and camp on it. As described herein, in some aspects, "serving link" can refer to a bidirectional communication link between satellite equipment 402 and UE 406.

[0074] In many instances, the movement of satellite devices 402(1)-(N) (e.g., in orbit around the Earth) results in altered coverage in time and space (i.e., geographic areas). Furthermore, satellite devices 402(1)-(N) can periodically update the orientation of beam 410(1)-(N) to serve different geographic areas. As a result, feeder links 408(1)-(N) and service links are constantly updated due to changes in proximity between satellite devices and gateway 404(1)-(N) and between satellite devices 402(1)-(N) and UE 406(1)-(N). Additionally, when UE 406 is in idle mode, UE 406 can determine the cell 412 to occupy via cell selection or cell reselection to prepare for or respond to modifications to feeder links 408(1)-(N) and service links.

[0075] As described herein, satellite devices 402(1)-(N) may determine cell reselection information 414(1)-(N) based on satellite configuration information 416. In some aspects, satellite configuration information 416 may include coverage information identifying the coverage provided by each satellite device 402 throughout its orbit. For example, satellite configuration information 416 may indicate the geographic location covered by each satellite device 402 at a predefined time period, timing information indicating the occurrence of gateway handover performed by satellite device 402, and / or timing information indicating the occurrence of a transition from providing coverage at a first geographic location to providing coverage at a second geographic location. Furthermore, satellite devices 402(1)-(N) may periodically or dynamically send cell reselection information 414(1)-(N) to UE 406(1)-(N) to perform cell reselection processing respectively. Furthermore, UE 406(1)-(N) can perform cell reselection on cell 412(1)-(N) provided by beam 410(1)-(N) of satellite equipment 402(1)-(N) based on cell reselection information 414(1)-(N). For example, UE 406(1) can switch between beams 410 of the same satellite equipment 402(1) (e.g., switch from beam 410(1) to beam 410(2)), or switch between beams 410 of different satellite equipment 402 (e.g., switch from beam 410(1) to beam 410(5)).

[0076] In some respects, the cell reselection information 414(1)-(N) may include configuration information identifying a predefined time period for which a handover from the current cell 412(3) to the destination cell 412(2) is to take place. For example, the configuration information may indicate the time period for the handover from the current cell 412(3) to the destination cell 412(2). Furthermore, this time period may correspond to the movement of satellite devices 402(1)-(N). Specifically, this time period may correspond to the time when satellite device 402(1) is performing a gateway handover from one gateway to another (e.g., a handover from gateway 404(1) to gateway 404(2)). Thus, the configuration information enables UE 406(1) to select, based on gateway 404(2), the destination cell 412(2) provided by satellite device 402(1), instead of another cell 412 provided by satellite device 402(2) that will require cell reselection in the near future due to the movement of satellite device 402(2) and / or a gateway handover performed by satellite device 402(2) from gateway 404(2) to another gateway 404. Furthermore, in some aspects, cell reselection information 414(1)-(N) may be provided to UE 406 during the cell selection process or during the cell reselection process. For example, UE 406(1) may receive cell reselection information 414(1) including scheduling information during the cell selection of cell 412(3).

[0077] In some aspects, the cell reselection information 414(1)-(N) may include prohibition information identifying the beam 410 or cell 412 that the UE 406 should not select during the cell reselection process. For example, the prohibition information may indicate that the UE 406(1) should not select the beam 410(5) of the satellite device 402(2) (e.g., disqualify the beam), because the satellite device 402(2) may soon perform a gateway handover that requires cell reselection in the near future due to the movement of the satellite device 402(2) and / or a gateway handover performed by the satellite device 402(2) from gateway 404(2) to another gateway 404. In some examples, the cell reselection information 414(1)-(N) may be a MIB that includes a prohibition indicator. Furthermore, individual beams 410 may be associated with individual MIBs, and individual beams 410 may have prohibition information set via the MIB corresponding to the beam 410.

[0078] In some respects, the cell reselection information 414(1)-(N) may trigger a cell reselection process or the acquisition of an SIB that can be used to select cell 412. For example, the cell reselection information 414(1)-(N) may be a DCI that includes a P-RNTI or another type of RNTI. In some other respects, the cell reselection information 414(1)-(N) may include a gateway identifier associated with the destination cell 412 to be selected by UE 406 during the cell reselection process. For example, the gateway identifier may identify gateway 404(2) as the preferred gateway during the cell reselection process. In response, UE 406 may prioritize the beam 410(5) or cell 412(3) associated with the identified gateway 404(2) during the cell reselection process.

[0079] In some respects, the cell reselection information 414(1)-(N) may include mapping information that identifies the association between a PCI or frequency and a gateway identifier associated with a destination cell 412 to be selected by the UE 406 during the cell reselection process. The gateway identifier may identify gateway 404(2) as the preferred gateway during the cell reselection process. In response, the UE 406(1) may prioritize the beam 410(5) or cell 412(3) associated with the identified gateway 404(2) during the cell reselection process. In some other respects, the UE 406 may prioritize the destination cell 412 belonging to the same gateway 404 as the current cell 412. Furthermore, after cell reselection, the UE 406 may use the indication in SIB 1 regarding whether the SIBs are different or the same among the gateways. Where the SIB content is the same, a cell / frequency list may be indicated. In this way, the UE 406 may not need to obtain all the SIBs, since the gateway / gNB may be the same.

[0080] In some aspects, the cell reselection information 414(1)-(N) may include a warning message identifying a scheduled gateway handover from a first gateway 404 to a second gateway 404, which will result in the termination of cell 412. For example, the warning message may identify that satellite device 402(2) is terminating cell 412(3) generated by beam 410(5). Additionally, the warning message may identify another cell 412(2) for UE 406(2) to select. In some instances, satellite device 402(2) may send the warning message to UE 406(2) during the wake-up period of a paging discontinuous reception (DRX) procedure. In some other instances, satellite device 402(2) may send the warning message during a predefined reselection period. Furthermore, in some aspects, UE 406(2) may delay the selection of destination cell 412(2) or reduce the priority of the selection of destination cell 412(2) based on the cell reselection information 414(1)-(N). For example, UE 406(1) may delay the selection of cell 412(3) or reduce the priority of the selection of cell 412(3) based on cell reselection information 414(1)-(N) during the cell reselection process. Specifically, cell reselection information 414(1)-(N) may instruct UE 406(1) to delay the selection of cell 412(3) or reduce the priority of the selection of cell 412(3). In some aspects, cell reselection information 414(1)-(N) may include timing information identifying a scheduled handover from a first gateway 404(1) to a second gateway 404(2) that will result in the reselection of cell 412 belonging to the same serving satellite 402(1).

[0081] In some aspects, the cell reselection information 414(1)-(N) may include scheduling information identifying the time period during which the UE 406 abandons monitoring paging information and / or performs the cell reselection procedure. This time period may correspond to the time when satellite device 402 will terminate the current cell 412 and initialize the destination cell 412. For example, the scheduling information may identify the time period during which satellite device 402(1) is terminating cell 412(1) due to an upcoming gateway handover from gateway 404(1) to gateway 404(2). Furthermore, this time period may be aligned with the sleep period of the DRX procedure.

[0082] like Figure 4As explained, in some aspects, satellite equipment 402 may include a satellite cell management component 198. The satellite cell management component 198 may be configured to determine cell reselection information 414(1)-(N) based on satellite configuration information 416. Furthermore, satellite equipment 402(1)-(N) may transmit the cell reselection information 414(1)-(N) within SIB, MIB, SSB, and / or dedicated RRC signaling. For example... Figure 4 As further explained, in some aspects, UE 406 may include a satellite cell selection component 140. The satellite cell selection component 140 may be configured to receive cell reselection information 414(1)-(N) and perform cell reselection based on the cell reselection information 414(1)-(N). More specifically, in some aspects, the satellite cell selection component 140 may be configured to minimize or reduce the frequency of cell reselection on beams 410(1)-(N) and cells 412(1)-(N) based on the cell reselection information 414(1).

[0083] Figure 5A This is a diagram illustrating an example of a wireless communication network 500 including a fixed radio cell, as a first instance of some aspects of this disclosure in time. As used herein, "fixed radio cell" can refer to a radio cell generated by a satellite device employing maneuverable antenna technology while in orbit around a planet to project a beam to a specific geographic area for a fixed duration. As used herein, "mobile radio cell" can refer to a radio cell in which the source satellite device of the mobile radio cell is constantly moving while in orbit around a planet. Figure 5A As explained, the wireless communication network 500 may include satellite device 502 (e.g., satellite device 402) and satellite device 504 (e.g., satellite device 402). Furthermore, satellite device 502 may be communicatively coupled to a terrestrial network via gateway 506 (e.g., gateway 404). For example, the wireless communication network 500 may include a feeder link 508 between satellite device 502 and gateway 506. Furthermore, satellite device 504 may be communicatively coupled to a terrestrial network via gateway 510 (e.g., gateway 404). For example, the wireless communication network 500 may include a feeder link 512 between satellite device 504 and gateway 510. Additionally, satellite device 502 may form a beam 514(1) associated with gateway 506 providing a fixed radio cell 516, and satellite device 504 may form beams 518(1)-(2) associated with gateway 510 providing a fixed radio cell 520. In addition, at the first instance in time, UE 522 (e.g., UE 406) may select fixed radio cell 518 during the cell selection or reselection process.

[0084] Figure 5B This is a diagram illustrating an example of a wireless communication network 500 comprising a fixed radio cellular cell, in a second instance according to some aspects of this disclosure. Figure 5B As explained herein, in response to the movement of satellite devices 502 and 504, satellite device 502 may perform a soft feeder link handover. As used herein, “soft feeder link handover” may refer to gateway handover, wherein the satellite device is communicatively coupled to a destination gateway before terminating its communication coupling to a source gateway. Furthermore, as used herein, “hard feeder link handover” may refer to gateway handover, wherein the satellite device is communicatively coupled to a source gateway before terminating its communication coupling to a destination gateway. For example, satellite device 502 may additionally be communicatively coupled to a terrestrial network via gateway 510. For example, wireless communication network 500 may concurrently include feeder link 508 between satellite device 502 and gateway 506 and feeder link 524 between satellite device 502 and gateway 510. Furthermore, satellite device 502 may form a beam 514(2) associated with gateway 510 providing a fixed radio cell 526. As described in detail herein, UE 522 may receive cell reselection information (e.g., cell reselection information 414(1)-(N)) and select a fixed radio cell 526 to occupy based on the cell reselection information via a cell reselection process. In some aspects, the cell reselection information may include configuration information, prohibition information, and / or DCI, as described in detail herein. In some other aspects, each fixed radio cell (e.g., fixed radio cell 516) may correspond to a single beam (e.g., beam 514(1)), or each satellite device (e.g., satellite device 502) may generate a single fixed radio cell (e.g., fixed radio cell 516). In these instances, UE 522 may perform cell reselection using cell reselection information including configuration information and / or DCI, as described in detail herein.

[0085] Figure 6A This is a diagram illustrating a first example of a wireless communication network 600 including a mobile radio cell, based on some aspects of this disclosure in a time-dependent first instance. Figure 6AAs explained, the wireless communication network 600 may include satellite device 602 (e.g., satellite device 402) and satellite device 604 (e.g., satellite device 402). Furthermore, satellite device 602 may be communicatively coupled to a terrestrial network via gateway 606 (e.g., gateway 404). For example, the wireless communication network 600 may include a feeder link 608 between satellite device 602 and gateway 606. Furthermore, satellite device 604 may be communicatively coupled to a terrestrial network via gateway 610 (e.g., gateway 404). For example, the wireless communication network 600 may include a feeder link 612 between satellite device 604 and gateway 610. Additionally, satellite device 602 may form beams 614(1)-(2) associated with gateway 606 providing mobile radio cell 616, and satellite device 604 may form beams 618(1)-(2) associated with gateway 610 providing mobile radio cell 620. Furthermore, at the first instance in time, UE 622 (e.g., UE 406) may select mobile radio cell 620 during the cell selection or reselection process.

[0086] Figure 6B This is a diagram illustrating a first example of a wireless communication network 600 including a mobile radio cell, in a second instance according to some aspects of this disclosure. Figure 6B As explained, in response to the movement of satellite devices 602 and 604, satellite device 602 can perform a soft feeder link handover. More specifically, satellite device 602 can additionally be communicatively coupled to a terrestrial network via gateway 610. Furthermore, the soft feeder handover can occur one beam at a time. For example, wireless communication network 600 can simultaneously include feeder link 608 between satellite device 602 and gateway 606 and feeder link 624 between satellite device 602 and gateway 610. In addition, beam 614(2) can simultaneously provide mobile radio cell 616 and mobile radio cell 626.

[0087] As described in detail herein, UE 622 may receive cell reselection information (e.g., cell reselection information 414(1)-(N)). Furthermore, UE 622 may select, via a cell reselection process, a mobile radio cell 626 to occupy, instead of mobile radio cell 620, which will perform a gateway handover to gateway 610 in the near future, based on the cell reselection information. In some aspects, the cell reselection information may include configuration information, DCI, gateway identifier, and / or mapping information, as described in detail herein. In some other aspects, each beam of the satellite device (e.g., satellite device 602) (e.g., beam 614(1)-(2)) performs a gateway handover simultaneously. In these instances, UE 622 may perform cell reselection using cell reselection information including configuration information for beam switching between beams of the same satellite equipment and / or DCI, and UE 622 may perform cell reselection using cell reselection information including gateway identifiers and / or mapping information for beam switching between different satellite equipment and different gateways.

[0088] Figure 7A This is a diagram illustrating an example of a wireless communication network 700 comprising a mobile radio cell, in a first instance according to some aspects of this disclosure. Figure 7A As explained, the wireless communication network 700 may include satellite device 702 (e.g., satellite device 402) and satellite device 704 (e.g., satellite device 402). Furthermore, satellite device 702 may be communicatively coupled to a terrestrial network via gateway 706 (e.g., gateway 404). For example, the wireless communication network 700 may include a feeder link 708 between satellite device 702 and gateway 706. Furthermore, satellite device 704 may be communicatively coupled to a terrestrial network via gateway 710 (e.g., gateway 404). For example, the wireless communication network 700 may include a feeder link 712 between satellite device 704 and gateway 710. Additionally, satellite device 702 may form a beam 714(1)-(2) associated with gateway 706 providing mobile radio cell 716, and satellite device 704 may form a beam 718(1) associated with gateway 710 providing mobile radio cell 720. Furthermore, at the first instance in time, UE 722 (e.g., UE 406) may select mobile radio cell 720 during the cell selection or reselection process.

[0089] Figure 7B This is a diagram illustrating an example of a wireless communication network 700 including a mobile radio cell, in a second instance according to some aspects of this disclosure. Figure 7BAs explained, in response to the movement of satellite devices 702 and 704, satellite device 702 can perform a hard feeder link handover. More specifically, satellite device 702 can communicatively couple to a terrestrial network via gateway 710. Furthermore, the hard feeder link handover may result in disconnection from gateway 706 and termination of mobile radio cell 716. For example, wireless communication network 700 can terminate feeder link 708 between satellite device 702 and gateway 706, and add feeder link 724 between satellite device 702 and gateway 710. In addition, beams 714(1)-(2) can now provide mobile radio cell 726.

[0090] As described in detail herein, UE 722 may receive cell reselection information (e.g., cell reselection information 414(1)-(N)). Furthermore, UE 722 may select, via a cell reselection process, a mobile radio cell 726 to occupy based on the cell reselection information, instead of a mobile radio cell 716 that will terminate in the near future. In some aspects, the cell reselection information may include warning information, scheduling information, configuration information, DCI, gateway identifier, and / or mapping information, as described in detail herein. In some other aspects, each mobile radio cell (e.g., mobile radio cell 716) may correspond to a single beam (e.g., beam 714(1)), or each satellite device (e.g., satellite device 702) may generate a single mobile radio cell (e.g., mobile radio cell 716). In these instances, UE 722 may perform cell reselection using the cell reselection information including warning information and / or scheduling information, as described in detail herein.

[0091] Figure 8 Figure 800 illustrates an example of a hardware implementation of a UE 802 (e.g., UE 102, UE 406, etc.) employing a processing system 814. The processing system 814 may be implemented with a bus architecture generally represented by a bus 824. Depending on the specific application and overall design constraints of the processing system 814, the bus 824 may include any number of interconnect buses and / or bridges. The bus 824 links various circuits together, including one or more processors and / or hardware components (represented by processor 804, satellite cell selection component 140, and computer-readable medium (e.g., non-transient computer-readable medium) / memory 806). The bus 824 may also link various other circuits, such as timing sources, peripherals, regulators, and power management circuits, which are well known in the art and therefore will not be described further.

[0092] Processing system 814 may be coupled to transceiver 810. Transceiver 810 may be coupled to one or more antennas 820. Transceiver 810 provides means for communicating with various other devices via a transmission medium. Transceiver 810 receives signals from the one or more antennas 820, extracts information from the received signals, and provides the extracted information to processing system 814 (specifically, receiver assembly 830). Additionally, transceiver 810 receives information from processing system 814 (specifically, transmitter assembly 832) and generates signals to be applied to the one or more antennas 820 based on the received information. Processing system 814 includes processor 804 coupled to computer-readable medium / memory 806. Processor 804 is responsible for general processing, including the execution of software stored on computer-readable medium / memory 806. When executed by processor 804, the software causes processing system 814 to perform the various functions described above for any particular device. Computer-readable medium / memory 806 may also be used to store data manipulated by processor 804 during software execution. The processing system 814 may further include a satellite cell selection component 140. This component may be a software component running in the processor 804, a software component residing in / stored in a computer-readable medium / memory 806, one or more hardware components coupled to the processor 804, or some combination thereof. The processing system 814 may be a component of the UE 350 and may include memory 360 and / or at least one of the following: TX processor 368, RX processor 356, and controller / processor 359. Alternatively, the processing system 814 may be the entire UE (e.g., see...). Figure 3 (of 350).

[0093] Satellite Cell Selection Component 140 can be configured to identify the cell to be selected and perform a cell reselection process to select that cell. Furthermore, Satellite Cell Selection Component 140 can identify the cell to be selected based on rules for minimizing or reducing the frequency of cell reselection by UE 802. Specifically, UE 802 can receive cell reselection information (e.g., cell reselection information 414(1)-(N)) and identify the cell to be selected based on the cell reselection information. As described in detail herein, the cell reselection information can indicate cells or beams that may be associated with feeder link modifications. Thus, the cell reselection information can inform Satellite Cell Selection Component 140 which cells will require another cell reselection process in the near future.

[0094] The aforementioned apparatus may be one or more of the aforementioned components of UE 802 and / or the processing system 814 of UE 802 configured to perform the functions described by the aforementioned apparatus. As described above, the processing system 814 may include a TX processor 368, an RX processor 356, and a controller / processor 359. Thus, in one configuration, the aforementioned apparatus may be the TX processor 368, the RX processor 356, and the controller / processor 359 configured to perform the functions described by the aforementioned apparatus.

[0095] Figure 9 Figure 900 illustrates an example of a hardware implementation of a satellite device 902 (e.g., satellite device 402, etc.) employing a processing system 914. The processing system 914 can be implemented with a bus architecture generally represented by a bus 924. Depending on the specific application and overall design constraints of the processing system 914, the bus 924 may include any number of interconnect buses and bridges. The bus 924 links various circuits together, including one or more processors and / or hardware components (represented by processor 904, satellite cell management component 198, and computer-readable medium (e.g., non-transient computer-readable medium) / memory 908). The bus 924 may also link various other circuits, such as timing sources, peripherals, regulators, and power management circuits, which are well known in the art and therefore will not be described further.

[0096] Processing system 914 may be coupled to transceiver 910. Transceiver 910 may be coupled to one or more antennas 920. Transceiver 910 provides means for communicating with various other devices via a transmission medium. Transceiver 910 receives signals from the one or more antennas 920, extracts information from the received signals, and provides the extracted information to processing system 914 (specifically, receiving component 930). Additionally, transceiver 910 receives information from processing system 914 (specifically, transmission component 932) and generates signals to be applied to the one or more antennas 920 based on the received information. Processing system 914 includes processor 904 coupled to computer-readable medium / memory 906. Processor 904 is responsible for general processing, including the execution of software stored on computer-readable medium / memory 906. When executed by processor 904, the software causes processing system 914 to perform the various functions described above for any particular device. Computer-readable medium / memory 906 may also be used to store data manipulated by processor 904 during software execution. The processing system 914 further includes a satellite cellular management component 198. This component may be a software component running in the processor 904, a software component residing / stored in a computer-readable medium / memory 906, one or more hardware components coupled to the processor 904, or some combination thereof. The processing system 914 may be a component of the base station 310 and may include a memory 376 and / or at least one of the following: a TX processor 316, an RX processor 370, and a controller / processor 375. Alternatively, the processing system 914 may be the entire base station (e.g., see...). Figure 3 (310).

[0097] The satellite cell management component 198 can be configured to facilitate efficient cell reselection of beams and cells for satellite equipment. Specifically, the satellite cell management component 198 can generate cell reselection information (e.g., cell reselection information 414(1)-(N)) and send this cell reselection information to the UE. As described in detail herein, the cell reselection information can indicate the cells or beams of satellites that may be associated with feeder link modifications. Thus, the cell reselection information can inform the UE which cells of satellite equipment 902 or another satellite equipment will require another cell reselection process in the near future.

[0098] The aforementioned devices may be one or more of the aforementioned components of satellite equipment 902 and / or processing systems 914 within satellite equipment 902 configured to perform the functions described by the aforementioned devices. As described above, processing system 914 may include TX processor 316, RX processor 370, and controller / processor 375. Thus, in one configuration, the aforementioned devices may be TX processor 316, RX processor 370, and controller / processor 375 configured to perform the functions described by the aforementioned devices.

[0099] Figure 10 This is a flowchart of a method 1000 for performing cell reselection during gateway and / or satellite handover, according to some aspects of this disclosure. The method can be performed by a UE (e.g., Figure 1 and 3 The UE 104 may include a memory 360 and may be the entire UE 104 or a component of the UE 104 (such as a satellite cell selection component 140, a TX processor 368, an RX processor 356 and / or a controller / processor 359). Figure 4 UE 406; and / or Figure 8 Execute using UE 802).

[0100] In block 1010, method 1000 includes selecting the current cell of the satellite device in the RAN. For example, UE 406(1) can select cell 412(1) provided by satellite device 402(1). In some aspects, UE 406(1) can camp on cell 412(1) in RRC idle mode.

[0101] Therefore, UE 104, UE 406, UE 802, TX processor 368, RX processor 356 and / or controller / processor 359 performing satellite cell selection component 140 can provide means for selecting the current cell of the satellite device in the RAN.

[0102] In block 1020, method 1000 may include receiving cell reselection information from the satellite device in response to a link modification (e.g., gateway change, satellite handover, etc.) to identify a destination cell for selection. For example, satellite cell selection component 140 may receive cell reselection information 414(1) from satellite device 402(1). Furthermore, satellite cell selection component 140 may use cell reselection information 414(1) to determine destination cell 412. As described in detail herein, satellite cell selection component 140 may be configured to select destination cell 412 in a way that minimizes or reduces the frequency of cell reselection procedures performed by UE 406(1).

[0103] In subframe 1021, frame 1020 may optionally include configuration information indicating a predefined time period for switching from the current cell to the destination cell, which is received during the selection of the current cell. For example, cell reselection information 414(1)-(N) may include configuration information indicating a predefined time period for switching from the current cell 412(3) to the destination cell 412(2).

[0104] In sub-block 1022, block 1020 may optionally include reception prohibition information that disqualifies the beam of the current cell or new cell as a candidate in the cell reselection process. For example, cell reselection information 414(1)-(N) may include prohibition information identifying the UE 406(1) as not to select beam 410 or cell 412 during the cell reselection process.

[0105] In sub-block 1023, block 1020 may optionally include receiving downlink control information (DCI) including a radio network temporary identifier (RNTI), which triggers a cell reselection process or an acquisition of a system information block (SIB). For example, cell reselection information 414(1)-(N) may include a DCI that triggers a cell reselection process or an acquisition of an SIB that can be used to select cell 412.

[0106] In sub-block 1024, block 1020 may optionally include receiving a gateway identifier associated with a destination cell to be selected by the UE during the cell reselection process. For example, cell reselection information 414(1)-(N) may include a gateway identifier associated with a destination cell 412 to be selected by the UE 406(1) during the cell reselection process.

[0107] In sub-block 1025, block 1020 may optionally include receiving mapping information that associates a PCI or frequency with a gateway associated with a destination cell. For example, cell reselection information 414(1)-(N) may include mapping information that identifies the association between a PCI or frequency and a gateway identifier associated with a destination cell 412 to be selected by UE 406(1) during the cell reselection process.

[0108] In subframe 1026, frame 1020 may optionally include receiving a warning message during the wake-up period of a paging discontinuous reception (DRX) procedure indicating a scheduled handover from a first gateway to a second gateway that will result in the termination of the cell. For example, cell reselection information 414(1)-(N) may include a warning message indicating a scheduled gateway handover from a first gateway 404 to a second gateway 404 that will result in the termination of cell 412. Furthermore, UE 406(1) may receive the warning message during the wake-up period of a paging discontinuous reception (DRX) procedure.

[0109] In subframe 1027, frame 1020 may optionally include reception scheduling information that identifies a time period during which the UE is instructed to abandon monitoring paging information and / or perform a cell reselection process, the time period corresponding to the satellite equipment terminating the current cell and initializing the destination cell. For example, cell reselection information 414(1)-(N) may include scheduling information that identifies a time period during which the UE 406(1) is instructed to abandon monitoring paging information and / or perform a cell reselection process.

[0110] Therefore, UE 104, UE 406, UE 802, TX processor 368, RX processor 356 and / or controller / processor 359 performing satellite cell selection component 140 can provide means for receiving cell reselection information from satellite equipment in response to link modification for identifying destination cells for selection.

[0111] In block 1030, method 1000 may include selecting a destination cell based on cell reselection information via a cell reselection process. For example, UE 406(1) may switch to destination cell 412(2) in response to a cell reselection process performed based on cell reselection information 414(1)-(N).

[0112] Therefore, UE 104, UE 406, UE 802, TX processor 368, RX processor 356 and / or controller / processor 359 performing satellite cell selection component 140 can provide means for selecting a destination cell based on cell reselection information via a cell reselection process.

[0113] Figure 11 This is a flowchart of a method 1100 for facilitating cell reselection during gateway and / or satellite handover, according to some aspects of this disclosure. The method may be performed by a base station (e.g., Figure 1 and 3The base station 102 / 180 may include a memory 376 and may be the entire base station or a component of the base station (such as a satellite cellular management component 198, a TX processor 316, an RX processor 370 and / or a controller / processor 375). Figure 4 Satellite equipment 402; Figure 9 The satellite equipment 902 is used to perform this.

[0114] In block 1110, method 1100 may include initializing the currently serving cells of a radio access network (RAN) using one or more beams. For example, satellite device 402(1) may form beam 410(1) that generates cell 412(1) for providing coverage to UE 406(1)-(N). Furthermore, UE 406(1) may select cell 412(1) and operate in idle mode.

[0115] Therefore, the base station 102, satellite equipment 402, satellite equipment 902, TX processor 316, RX processor 370 and / or controller / processor 375 that implement the satellite cell management component 198 can provide means for initializing the currently serving cell of the radio access network (RAN) using one or more beams.

[0116] In block 1120, method 1100 may include determining cell reselection information for identifying a destination cell for selection by the UE in response to a link modification. For example, satellite cell management component 198 may generate cell reselection information 414(1) based on satellite configuration information 416. As described in detail herein, UE 406(1) may use cell reselection information 414(1) to select destination cell 412, which minimizes the frequency of cell reselection processes performed by UE 406(1).

[0117] In subframe 1121, frame 1120 may optionally include configuration information that identifies a predefined time period for switching from the current cell to the destination cell, which is received during the selection of the current cell. For example, cell reselection information 414(1) may include configuration information that identifies a predefined time period for switching from the current cell 412(3) to the destination cell 412(2).

[0118] In subframe 1122, frame 1120 may optionally include a prohibition message that disqualifies the beam of the current cell or the new cell as a candidate in the cell reselection process. For example, cell reselection information 414(1) may include prohibition information identifying the UE 406(1) as not to select beam 410 or cell 412 during the cell reselection process.

[0119] In sub-box 1123, box 1120 may optionally include determining a DCI including a Radio Network Temporary Identifier (RNTI) that triggers a cell reselection process or an acquisition of an SIB. For example, cell reselection information 414(1) may include a DCI that triggers a cell reselection process or an acquisition of an SIB that can be used to select cell 412.

[0120] In sub-box 1124, box 1120 may optionally include a gateway identifier that determines the destination cell to be selected by the UE during the cell reselection process. For example, cell reselection information 414(1) may include a gateway identifier associated with the destination cell 412 to be selected by the UE 406(1) during the cell reselection process.

[0121] In sub-block 1125, block 1120 may optionally include mapping information that determines the association of a PCI or frequency with a gateway associated with the destination cell. For example, cell reselection information 414(1) may include mapping information that identifies the association between a PCI or frequency and a gateway identifier associated with the destination cell 412 to be selected by UE 406(1) during the cell reselection process.

[0122] In subframe 1126, frame 1120 may optionally include a warning message identifying a scheduled handover from a first gateway to a second gateway that will result in the termination of the cell during the wake-up period of a paging discontinuous reception (DRX) procedure. For example, cell reselection information 414(1) may include a warning message identifying a scheduled gateway handover from a first gateway 404 to a second gateway 404 that will result in the termination of cell 412. Furthermore, UE 406(1) may receive the warning message during the wake-up period of a paging discontinuous reception (DRX) procedure.

[0123] In subframe 1127, frame 1120 may optionally include scheduling information that identifies a time period during which the UE is instructed to abandon monitoring paging information and / or perform a cell reselection process, the time period corresponding to the satellite equipment terminating the current cell and initializing the destination cell. For example, cell reselection information 414(1) may include scheduling information that identifies a time period during which the UE 406(1) is instructed to abandon monitoring paging information and / or perform a cell reselection process.

[0124] Therefore, the base station 102, satellite equipment 402, satellite equipment 902, TX processor 316, RX processor 370 and / or controller / processor 375 that execute the satellite cell management component 198 can provide means for determining cell reselection information for identifying a destination cell for the UE to select in response to a link modification.

[0125] In box 1130, method 1100 may include sending the cell reselection information to the UE. For example, satellite device 402(1) may send cell reselection information 414(1) to UE 406(1).

[0126] Therefore, the base station 102, satellite equipment 402, satellite equipment 902, TX processor 316, RX processor 370 and / or controller / processor 375 that execute the satellite cell management component 198 can provide means for sending the cell reselection information to the UE.

[0127] The specific order or hierarchy of the boxes in the disclosed process / flowcharts is an explanation of the exemplary method. The specific order or hierarchy of the boxes in these process / flowcharts can be rearranged based on design preferences. Furthermore, some boxes may be combined or omitted. The appended method claims present the elements of the various boxes in an exemplary order, and are not intended to be limited to the specific order or hierarchy presented.

[0128] The preceding description is provided to enable any person skilled in the art to practice the various aspects described herein. Various modifications to these aspects will be readily apparent to those skilled in the art, and the general principles defined herein may be applied to other aspects. The claims are not intended to be limited to the aspects shown herein, but are to be granted the full scope consistent with the language of the claims, and references to the singular form of an element, unless specifically stated otherwise, are not intended to mean “one and only one”, but rather “one or more”. Unless specifically stated otherwise, the term “some / a” refers to one or more. Combinations such as “at least one of A, B, or C,” “one or more of A, B, or C,” “at least one of A, B, and C,” “one or more of A, B, and C,” and “A, B, C, or any combination thereof” include any combination of A, B, and / or C, and may include multiple A, multiple B, or multiple C. Specifically, combinations such as "at least one of A, B, or C", "one or more of A, B, or C", "at least one of A, B, and C", "one or more of A, B, and C", and "A, B, C, or any combination thereof" can be A only, B only, C only, A and B, A and C, B and C, or A and B and C, wherein any such combination may include one or more members of A, B, or C. Elements of all aspects described throughout this disclosure that are presently or hereafter known to those skilled in the art are expressly incorporated herein by reference and are intended to be covered by the claims. Furthermore, nothing disclosed herein is intended as a donation to the public, whether or not such disclosure is expressly stated in the claims. The terms "module," "mechanism," "element," "device," etc., may not be a substitute for the term "apparatus." Thus, no claim element should be construed as an apparatus plus a function unless the element is expressly stated using the phrase "apparatus for..."

[0129] Example Terms

[0130] A method for wireless communication at a user equipment (UE) includes: selecting a current cell of a satellite device in a radio access network (RAN); and receiving from the satellite device cell reselection information for identifying a destination cell available for selection in response to a link modification.

[0131] B. The method described in paragraph A further includes: selecting a destination cell based on the cell reselection information via a cell reselection process.

[0132] C. The method as described in any one of paragraphs A and B, wherein the current cell is the destination cell, and further includes switching from a first beam of the current cell to a second beam of the current cell based on the cell reselection information during the cell reselection process.

[0133] C. The method as described in any one of paragraphs A and B, wherein the current cell is different from the destination cell, and further includes switching from a first beam of the current cell to a second beam of the destination cell based on the cell reselection information during the cell reselection process.

[0134] E. The method as described in any one of paragraphs A, D, and E, wherein receiving the cell reselection information includes receiving configuration information indicating a predefined time for switching from the current cell to the destination cell, the configuration information being received during the selection of the current cell.

[0135] F. The method as described in any one of paragraphs A, D, and E, wherein receiving the cell reselection information includes receiving prohibition information that disqualifies the beam of the current cell or another cell as a candidate in the cell reselection process.

[0136] G. The method as described in any one of paragraphs A, D, and E, wherein receiving the cell reselection information includes receiving downlink control information (DCI) including a radio network temporary identifier (RNTI), which triggers a cell reselection process or an acquisition of a system information block (SIB).

[0137] H. The method as described in any one of paragraphs A, D, and E, wherein receiving the cell reselection information includes receiving a gateway identifier associated with a destination cell to be selected by the UE during the cell reselection process.

[0138] I. The method as described in any one of paragraphs A, D, and E, wherein receiving the cell reselection information includes receiving mapping information that associates a physical cell identifier (PCI) or frequency with a gateway associated with the destination cell.

[0139] J1. The method as described in any one of paragraphs A and D, wherein receiving the cell reselection information includes receiving a scheduled handover warning message from the first gateway to the second gateway during the wake-up period of the paging discontinuous reception (DRX) process, indicating that the handover will result in the termination of the current cell.

[0140] J2. The method as described in any one of paragraphs A and D, wherein receiving the cell reselection information comprises: receiving timing information indicating a scheduled handover from a first gateway to a second gateway that will result in a reselection of the current cell belonging to the satellite equipment.

[0141] K. The method as described in any one of paragraphs A-J2 further includes obtaining a system information block based on the warning information.

[0142] L. The method as described in any one of paragraphs AK further includes: delaying the selection of a destination cell or reducing the priority of the selection of a destination cell based on the cell reselection information.

[0143] M. The method as described in any one of paragraphs A, D, and E, wherein receiving the cell reselection information includes receiving scheduling information that identifies a time period instructing the UE to abandon monitoring paging information and / or perform a cell reselection process, the time period corresponding to the satellite device terminating the current cell and initializing the destination cell.

[0144] N. The method as described in any one of paragraphs A, D, and E, wherein receiving the cell reselection information includes at least one of: receiving a System Information Block (SIB) or Dedicated Radio Resource Control (RRC) signaling including the cell reselection information; receiving a Master Information Block (MIB) including the cell reselection information; or receiving a Synchronization Signal Block (SSB) including the cell reselection information.

[0145] O. The method as described in any one of paragraphs AN, wherein the link modification includes at least one of: a soft feeder link modification or a hard feeder link modification of the satellite equipment; or a service link modification at the UE.

[0146] P. The method as described in any one of paragraphs A, D, and E, wherein the RAN is a 5G new radio RAN.

[0147] Q. A UE, comprising a memory storing computer-executable instructions; and at least one processor coupled to the memory and configured to execute the computer-executable instructions to perform a method as described in any one of paragraphs AP.

[0148] R. A UE comprising means for performing the method as described in any one of paragraphs AP.

[0149] A non-transient computer-readable medium storing computer-executable code that, when executed by a processor, causes the processor to perform the method as described in any one of paragraphs AP.

[0150] T. A method for wireless communication at a satellite device, comprising: initializing a current cell of a radio access network (RAN) using one or more beams; receiving from the satellite device cell reselection information for identifying a destination cell available in response to a link modification; and sending the cell reselection information to the UE.

[0151] U. As described in paragraph T, determining the cell reselection information includes determining configuration information that identifies a predefined time for switching from the current cell to the destination cell, and sending the cell reselection information includes sending the configuration information during the selection of the current cell by the UE.

[0152] V. The method as described in paragraph T, wherein determining the cell reselection information includes determining prohibition information that disqualifies the beam of the current cell as a candidate in the cell reselection process, the beam being associated with another satellite device.

[0153] W. The method described in paragraph T, wherein determining the cell reselection information includes determining downlink control information (DCI) including a radio network temporary identifier (RNTI) that triggers a cell reselection process or an acquisition of a system information block (SIB).

[0154] X. The method described in paragraph T, wherein determining the cell reselection information includes identifying a gateway identifier associated with the destination cell to be selected by the UE during the cell reselection process.

[0155] Y. As described in paragraph T, determining the cell reselection information includes mapping information that identifies a physical cell identifier (PCI) or frequency associated with a gateway associated with a destination cell.

[0156] Z. The method as described in paragraph T, wherein determining the cell reselection information includes determining a warning message indicating a scheduled handover from a first gateway to a second gateway that will result in the termination of the current cell, and sending the cell reselection information includes sending the warning message during the wake-up period of a paging discontinuous reception (DRX) procedure.

[0157] AA. As described in paragraph T, determining the cell reselection information includes determining scheduling information that identifies the time period during which the UE is instructed to abandon monitoring paging information and / or perform the cell reselection process.

[0158] AB. The method as described in any one of paragraphs T-AA further includes terminating the current cell and initializing the destination cell during the time period.

[0159] AC. The method as described in any one of paragraphs T-AB, wherein transmitting the cell reselection information comprises at least one of: transmitting a System Information Block (SIB) or Dedicated Radio Resource Control (RRC) signaling including the cell reselection information; transmitting a Master Information Block (MIB) including the cell reselection information; or transmitting a Synchronization Signal Block (SSB) including the cell reselection information.

[0160] AD. The method as described in any one of paragraphs T-AC, wherein the link modification includes at least one of: a soft feeder link modification or a hard feeder link modification of the satellite equipment; or a service link modification at the UE.

[0161] AE. The method as described in any one of paragraphs T-AD, wherein initializing the current cell of the RAN includes initializing a fixed temporary radio cell that performs a hard or soft handover.

[0162] AF. The method as described in any one of paragraphs T-AE, wherein initializing the current cell of the RAN includes initializing the mobile radio cell performing a hard or soft handover.

[0163] The method as described in any one of paragraphs T-AF further includes: initializing the destination cell based on a switch from a first gateway to a second gateway.

[0164] The method as described in any one of paragraphs T-AG further includes: initializing the destination cell based on a switch from a first gateway to a second gateway.

[0165] AI. The method as described in any one of paragraphs T-AH, wherein the RAN is a 5G new radio RAN.

[0166] AJ. A satellite device including a memory storing computer-executable instructions; and at least one processor coupled to the memory and configured to execute the computer-executable instructions to perform a method as described in any one of paragraphs T-A1.

[0167] AK. A satellite device comprising means for performing the method as described in any one of paragraphs T-AI.

[0168] AL. A non-transient computer-readable medium storing computer-executable code that, when executed by a processor, causes the processor to perform the method as described in any one of paragraphs T-AI.

Claims

1. A method for performing wireless communication at a user equipment (UE), comprising: Select the current cell of the satellite equipment in the Radio Access Network (RAN); as well as Receive from the satellite equipment cell reselection information for identifying the destination cell available in response to service link modification or gateway link modification. Receiving the cell reselection information includes receiving a prohibition message that cancels the eligibility of one or more beams of the current cell or another cell as candidates in the cell reselection process.

2. The method of claim 1, further comprising: The destination cell is selected based on the cell reselection information via a cell reselection process.

3. The method of claim 1, wherein the current cell is the destination cell, and the method further comprises: During the cell reselection process, the cell is switched from the first beam of the current cell to the second beam of the current cell based on the cell reselection information.

4. The method of claim 1, wherein the current cell is different from the destination cell, and the method further comprises: During the cell reselection process, the cell reselection information is used to switch from the first beam of the current cell to the second beam of the destination cell.

5. The method of claim 1, wherein receiving the cell reselection information includes: The receiver identifies a predefined time for switching from the current cell to the destination cell.

6. The method of claim 1, wherein receiving the cell reselection information includes: Receive downlink control information (DCI) including radio network temporary identifier (RNTI), which triggers a cell reselection process or the acquisition of a system information block (SIB).

7. The method of claim 1, wherein receiving the cell reselection information includes: Receive the gateway identifier associated with the destination cell to be selected by the UE during the cell reselection process.

8. The method of claim 1, wherein receiving the cell reselection information includes: Receive mapping information that associates the Physical Cell Identifier (PCI), frequency, propagation delay information, or uplink and downlink timing difference information with the gateway associated with the destination cell.

9. The method of claim 1, wherein receiving the cell reselection information includes: During the wake-up period of a discontinuous DRX paging process, a warning message indicating a scheduled handover from the first gateway to the second gateway will result in the termination of the current cell if the received identifier is received.

10. The method of claim 1, wherein receiving the cell reselection information comprises: The received identifier will result in a scheduled handover from the first gateway to the second gateway for the reselection of the current cell belonging to the satellite equipment.

11. The method of claim 1, further comprising: The selection of the destination cell is delayed or the priority of the selection of the destination cell is reduced based on the cell reselection information.

12. The method of claim 1, wherein receiving the cell reselection information comprises: The system receives scheduling information, which identifies a time period during which the UE is instructed to suspend monitoring paging information or perform a cell reselection process. This time period corresponds to the satellite device terminating the current cell and initializing the destination cell.

13. The method of claim 1, wherein receiving the cell reselection information includes at least one of the following: Receive System Information Block (SIB) or Dedicated Radio Resource Control (RRC) signaling that includes the cell reselection information; Receive the main information block (MIB) including the cell reselection information; or Receive the synchronization signal block SSB, which includes the cell reselection information.

14. A user equipment (UE) for wireless communication, comprising: Memory that stores executable instructions for a computer; as well as At least one processor coupled to the memory and configured to execute the computer-executable instructions to perform the following operations: Select the current cell of the satellite equipment in the Radio Access Network (RAN); and The satellite device receives cell reselection information for identifying a destination cell to be selected in response to a service link modification or gateway link modification, wherein the cell reselection information includes prohibition information that disqualifies one or more beams of the current cell or another cell as candidates in the cell reselection process.

15. A method for wireless communication at a satellite device, comprising: Use one or more beams to initialize the current cell of the radio access network (RAN); Determine the cell reselection information used to identify the destination cell for the user equipment (UE) to select in response to a service link modification or gateway link modification; as well as The cellular reselection information is sent to the UE, wherein the cellular reselection information includes a prohibition message that cancels the eligibility of one or more beams of the current cell or another cell as candidates in the cellular reselection process.

16. The method of claim 15, wherein determining the cell reselection information includes determining configuration information that identifies a predefined time for switching from the current cell to the destination cell, and sending the cell reselection information includes sending the configuration information during the selection of the current cell by the UE.

17. The method of claim 15, wherein determining the cell reselection information includes: The downlink control information (DCI) including the radio network temporary identifier (RNTI) is determined, and the DCI triggers a cell reselection process or the acquisition of a system information block (SIB).

18. The method of claim 15, wherein determining the cell reselection information includes: A gateway identifier associated with the destination cell to be selected by the UE during the cell reselection process.

19. The method of claim 15, wherein determining the cell reselection information includes: The identifier is a mapping information that associates the Physical Cell Identifier (PCI), frequency, propagation delay information, or uplink and downlink timing difference information with the gateway associated with the destination cell.

20. The method of claim 15, wherein determining the cell reselection information includes determining a warning message indicating a scheduled handover from a first gateway to a second gateway that will result in the termination of the current cell, and sending the cell reselection information includes sending the warning message during the wake-up period of a paging discontinuous reception DRX procedure.

21. The method of claim 15, wherein determining the cell reselection information includes: Determine scheduling information, which identifies the time period during which the UE is instructed to suspend monitoring paging information or perform a cell reselection process.

22. The method of claim 15, wherein sending the cell reselection information includes at least one of the following: Send System Information Block (SIB) or Dedicated Radio Resource Control (RRC) signaling that includes the cell reselection information; Send a main information block (MIB) including the cell reselection information; or Send a synchronization signal block (SSB) that includes the cell reselection information.

23. The method of claim 15, wherein initializing the current cell of the RAN includes initializing a fixed temporary radio cell for performing a hard or soft handover.

24. The method of claim 15, wherein initializing the current cell of the RAN includes initializing a mobile radio cell performing a hard handover or a soft handover.

25. The method of claim 15, further comprising: The destination cell is initialized based on switching from the first gateway to the second gateway.

26. A satellite device for wireless communication, comprising: Memory that stores executable instructions for a computer; as well as At least one processor coupled to the memory and configured to execute the computer-executable instructions to perform the following operations: Initialize the current cell of the radio access network RAN ​​using one or more beams; Determine the cell reselection information used to identify the destination cell for the user equipment (UE) to select in response to the detection of a service link modification or gateway link modification; as well as The cellular reselection information is sent to the UE, wherein the cellular reselection information includes a prohibition message that cancels the eligibility of one or more beams of the current cell or another cell as candidates in the cellular reselection process.

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